/* roulang page: index */
:root {
            --color-primary: #D6402A;
            --color-primary-dark: #B32E1C;
            --color-ink: #17191E;
            --color-bg: #FAF9F7;
            --color-card: #FFFFFF;
            --color-muted: #6B7280;
            --color-line: #E8E5E0;
            --color-accent: #F2C94C;
            --radius-card: 14px;
            --radius-button: 999px;
            --radius-input: 8px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 18px 40px rgba(0, 0, 0, 0.10);
            --font-cn: 'HarmonyOS Sans SC', 'Source Han Sans SC', 'Microsoft YaHei', system-ui, sans-serif;
            --font-en: 'Barlow Condensed', 'DIN Alternate', 'Oswald', sans-serif;
            --container-max: 1180px;
            --nav-height: 72px;
            --section-space: 100px;
            --section-space-mobile: 56px;
            --transition-fast: 200ms ease;
            --transition-smooth: 300ms ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-ink);
            background-color: var(--color-bg);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding-top: var(--section-space);
            padding-bottom: var(--section-space);
        }

        .section-tight {
            padding-top: 64px;
            padding-bottom: 64px;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-primary);
            margin-bottom: 12px;
            position: relative;
            padding-left: 16px;
        }
        .section-label::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 8px;
            height: 2px;
            background: var(--color-primary);
        }

        .section-title {
            font-size: 36px;
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: var(--color-ink);
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 17px;
            line-height: 1.9;
            color: var(--color-muted);
            max-width: 640px;
            margin-bottom: 40px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-button);
            font-weight: 700;
            font-size: 15px;
            line-height: 1.4;
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
            border: 1.5px solid transparent;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .btn-primary {
            background-color: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }
        .btn-primary:hover {
            background-color: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(214, 64, 42, 0.28);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--color-ink);
            border-color: var(--color-line);
        }
        .btn-secondary:hover {
            background-color: rgba(214, 64, 42, 0.06);
            border-color: var(--color-primary);
            color: var(--color-primary);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }
        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 700;
            font-size: 14px;
            color: var(--color-primary);
            transition: all var(--transition-fast);
            padding: 0;
            border: none;
            background: none;
        }
        .btn-text:hover {
            color: var(--color-primary-dark);
            gap: 10px;
        }
        .btn-text:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.03em;
            line-height: 1.5;
            background-color: rgba(242, 201, 76, 0.22);
            color: #8B6B00;
        }
        .tag-red {
            background-color: rgba(214, 64, 42, 0.1);
            color: var(--color-primary-dark);
        }
        .tag-dark {
            background-color: rgba(23, 25, 30, 0.08);
            color: var(--color-ink);
        }

        /* Header / Nav */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
            background-color: transparent;
            height: var(--nav-height);
        }
        .site-header.scrolled {
            background-color: rgba(250, 249, 247, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: 0 1px 0 var(--color-line);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 16px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 900;
            font-size: 20px;
            letter-spacing: -0.02em;
            color: var(--color-ink);
            flex-shrink: 0;
            white-space: nowrap;
        }
        .nav-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--color-primary);
            color: #fff;
            font-size: 18px;
            font-weight: 900;
            font-family: var(--font-en);
            letter-spacing: -0.04em;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            overflow-x: auto;
            scrollbar-width: none;
        }
        .nav-links::-webkit-scrollbar {
            display: none;
        }
        .nav-links a {
            display: block;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-ink);
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            background-color: rgba(214, 64, 42, 0.05);
        }
        .nav-links a.active {
            color: var(--color-primary);
            background-color: rgba(214, 64, 42, 0.08);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 32px;
            height: 32px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            border: 1.5px solid var(--color-line);
            background: var(--color-card);
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .nav-hamburger span {
            display: block;
            width: 16px;
            height: 2px;
            background: var(--color-ink);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .nav-hamburger:hover {
            border-color: var(--color-primary);
        }
        .nav-hamburger:hover span {
            background: var(--color-primary);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: var(--color-card);
            border-bottom: 1px solid var(--color-line);
            padding: 16px 24px 24px;
            z-index: 999;
            box-shadow: 0 24px 48px rgba(0, 0, 0, 0.08);
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            display: block;
            padding: 12px 8px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 8px;
            transition: background var(--transition-fast);
        }
        .mobile-menu a:hover {
            background: rgba(214, 64, 42, 0.06);
            color: var(--color-primary);
        }
        .mobile-menu .nav-cta {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 12px;
        }
        .mobile-menu .btn {
            width: 100%;
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: var(--nav-height);
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(23, 25, 30, 0.82) 0%, rgba(23, 25, 30, 0.55) 40%, rgba(214, 64, 42, 0.38) 100%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: rgba(255, 255, 255, 0.16);
            z-index: 2;
        }
        .hero .container {
            position: relative;
            z-index: 3;
            display: grid;
            grid-template-columns: 1fr 0.85fr;
            gap: 48px;
            align-items: center;
            width: 100%;
        }
        .hero-content {
            color: #fff;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(242, 201, 76, 0.18);
            border: 1px solid rgba(242, 201, 76, 0.4);
            color: var(--color-accent);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 20px;
            animation: fadeUp 0.6s ease forwards;
        }
        .hero-title {
            font-size: 56px;
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            animation: fadeUp 0.7s ease 0.08s both;
        }
        .hero-title .highlight {
            color: var(--color-accent);
        }
        .hero-desc {
            font-size: 18px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.82);
            max-width: 520px;
            margin-bottom: 28px;
            animation: fadeUp 0.7s ease 0.16s both;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            animation: fadeUp 0.7s ease 0.24s both;
        }
        .hero-actions .btn-secondary {
            color: #fff;
            border-color: rgba(255, 255, 255, 0.4);
            background: rgba(255, 255, 255, 0.06);
        }
        .hero-actions .btn-secondary:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(242, 201, 76, 0.12);
        }
        .hero-stats {
            display: flex;
            gap: 24px;
            margin-top: 28px;
            animation: fadeUp 0.7s ease 0.32s both;
        }
        .hero-stat {
            font-family: var(--font-en);
            font-size: 28px;
            font-weight: 800;
            color: var(--color-accent);
            letter-spacing: -0.02em;
        }
        .hero-stat-label {
            font-size: 13px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.68);
            letter-spacing: 0.04em;
        }

        .hero-panel {
            animation: fadeUp 0.8s ease 0.4s both;
        }
        .hero-card {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: var(--radius-card);
            padding: 24px;
            color: #fff;
        }
        .hero-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 16px;
            font-size: 14px;
            font-weight: 700;
            letter-spacing: 0.04em;
            color: rgba(255, 255, 255, 0.8);
        }
        .hero-score-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-score-row:last-child {
            border-bottom: none;
        }
        .hero-team {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 700;
        }
        .hero-team .team-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-accent);
            flex-shrink: 0;
        }
        .hero-team .team-dot.red {
            background: var(--color-primary);
        }
        .hero-score {
            font-family: var(--font-en);
            font-size: 28px;
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--color-accent);
        }
        .hero-card-footer {
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
        }
        .hero-download {
            margin-top: 16px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px dashed rgba(255, 255, 255, 0.3);
            border-radius: var(--radius-card);
            padding: 16px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .hero-download-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }
        .hero-download-text {
            font-size: 14px;
            font-weight: 700;
            line-height: 1.4;
        }
        .hero-download-sub {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
            font-weight: 400;
        }

        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(12px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Content Matrix */
        .matrix-grid {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 20px;
        }
        .matrix-left {
            grid-row: span 2;
            display: flex;
            flex-direction: column;
        }
        .matrix-card {
            background: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .matrix-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
            transform: translateY(-4px);
        }
        .matrix-card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--color-line);
        }
        .matrix-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .matrix-card:hover .matrix-card-img img {
            transform: scale(1.03);
        }
        .matrix-card-img .tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--color-card);
            color: var(--color-ink);
        }
        .matrix-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .matrix-card-title {
            font-size: 22px;
            font-weight: 800;
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .matrix-card-desc {
            font-size: 15px;
            color: var(--color-muted);
            line-height: 1.8;
            margin-bottom: 16px;
            flex: 1;
        }
        .matrix-card .btn-text {
            align-self: flex-start;
        }
        .matrix-right {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .matrix-right .matrix-card {
            flex-direction: row;
            align-items: stretch;
        }
        .matrix-right .matrix-card-img {
            width: 45%;
            aspect-ratio: auto;
            min-height: 100%;
        }
        .matrix-right .matrix-card-body {
            padding: 20px;
            justify-content: center;
        }
        .matrix-right .matrix-card-title {
            font-size: 18px;
            margin-bottom: 4px;
        }
        .matrix-right .matrix-card-desc {
            font-size: 14px;
            margin-bottom: 8px;
        }
        .matrix-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
            list-style: none;
        }
        .matrix-list li {
            background: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: 999px;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-ink);
            transition: all var(--transition-fast);
            cursor: default;
        }
        .matrix-list li:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(214, 64, 42, 0.04);
        }

        /* Stats Band */
        .stats-band {
            background: var(--color-ink);
            padding: 56px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }
        .stat-item {
            text-align: center;
            color: #fff;
        }
        .stat-number {
            font-family: var(--font-en);
            font-size: 48px;
            font-weight: 900;
            line-height: 1.1;
            letter-spacing: -0.02em;
            color: var(--color-accent);
            display: block;
            margin-bottom: 8px;
        }
        .stat-item p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.68);
            font-weight: 600;
            letter-spacing: 0.03em;
        }

        /* Brand Intro */
        .brand-intro {
            background: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 40px 48px;
            box-shadow: var(--shadow-card);
            margin-bottom: 48px;
        }
        .brand-intro-title {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--color-ink);
        }
        .brand-intro-text {
            font-size: 16px;
            line-height: 2;
            color: var(--color-muted);
        }

        /* Deep Article */
        .deep-article {
            border-top: 1px solid var(--color-line);
            padding-top: 40px;
        }
        .deep-article h3 {
            font-size: 28px;
            font-weight: 800;
            line-height: 1.4;
            margin-bottom: 16px;
        }
        .deep-article h4 {
            font-size: 20px;
            font-weight: 700;
            margin-top: 24px;
            margin-bottom: 12px;
            color: var(--color-primary-dark);
        }
        .deep-article p {
            font-size: 16px;
            line-height: 2.1;
            color: #3A3D42;
            margin-bottom: 16px;
            text-align: justify;
        }
        .deep-article .article-meta {
            font-size: 13px;
            color: var(--color-muted);
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--color-line);
        }

        /* News Center */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 0.9fr;
            gap: 20px;
        }
        .news-featured {
            background: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }
        .news-featured:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
        }
        .news-featured-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--color-line);
        }
        .news-featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .news-featured:hover .news-featured-img img {
            transform: scale(1.03);
        }
        .news-featured-body {
            padding: 24px;
        }
        .news-date {
            font-family: var(--font-en);
            font-size: 13px;
            font-weight: 700;
            color: var(--color-muted);
            letter-spacing: 0.05em;
            margin-bottom: 8px;
        }
        .news-featured-title {
            font-size: 24px;
            font-weight: 800;
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .news-featured-desc {
            font-size: 15px;
            color: var(--color-muted);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .news-item {
            background: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            display: flex;
            gap: 16px;
            align-items: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }
        .news-item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }
        .news-item-img {
            width: 80px;
            height: 60px;
            border-radius: 8px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--color-line);
        }
        .news-item-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .news-item:hover .news-item-img img {
            transform: scale(1.05);
        }
        .news-item-content {
            flex: 1;
            min-width: 0;
        }
        .news-item-title {
            font-size: 15px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 2px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item-desc {
            font-size: 13px;
            color: var(--color-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item .btn-text {
            flex-shrink: 0;
            font-size: 13px;
        }

        /* Team Track */
        .team-track {
            background: var(--color-ink);
            padding: 56px 0;
            overflow: hidden;
        }
        .team-track .section-title {
            color: #fff;
        }
        .team-track .section-desc {
            color: rgba(255, 255, 255, 0.6);
        }
        .team-track-scroll {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            padding-bottom: 8px;
        }
        .team-track-scroll::-webkit-scrollbar {
            display: none;
        }
        .team-track-card {
            min-width: 260px;
            max-width: 260px;
            scroll-snap-align: start;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-smooth);
            flex-shrink: 0;
        }
        .team-track-card:hover {
            border-color: var(--color-accent);
            transform: translateY(-4px);
        }
        .team-track-card img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .team-track-card:hover img {
            transform: scale(1.04);
        }
        .team-track-card-body {
            padding: 16px;
        }
        .team-track-card-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }
        .team-track-card-body p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.6;
        }

        /* Plan Section */
        .plan-grid {
            display: grid;
            grid-template-columns: 0.85fr 1.3fr 0.85fr;
            gap: 20px;
            align-items: stretch;
        }
        .plan-card {
            background: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }
        .plan-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
            transform: translateY(-4px);
        }
        .plan-card.featured {
            background: var(--color-ink);
            color: #fff;
            border-color: var(--color-ink);
            transform: scale(1.04);
            z-index: 1;
        }
        .plan-card.featured:hover {
            transform: scale(1.04) translateY(-4px);
            border-color: var(--color-primary);
        }
        .plan-card .tag {
            align-self: flex-start;
            margin-bottom: 12px;
        }
        .plan-card.featured .tag {
            background: rgba(242, 201, 76, 0.2);
            color: var(--color-accent);
        }
        .plan-card-title {
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 4px;
        }
        .plan-card-desc {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .plan-card.featured .plan-card-desc {
            color: rgba(255, 255, 255, 0.7);
        }
        .plan-features {
            list-style: none;
            margin-bottom: 20px;
            flex: 1;
        }
        .plan-features li {
            font-size: 14px;
            padding: 6px 0;
            border-bottom: 1px solid var(--color-line);
            display: flex;
            align-items: center;
            gap: 8px;
            color: #3A3D42;
        }
        .plan-card.featured .plan-features li {
            border-bottom-color: rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.85);
        }
        .plan-features li::before {
            content: '→';
            color: var(--color-primary);
            font-weight: 700;
            flex-shrink: 0;
        }
        .plan-card.featured .plan-features li::before {
            color: var(--color-accent);
        }

        /* Security */
        .security-section {
            background: var(--color-card);
            border-top: 1px solid var(--color-line);
            border-bottom: 1px solid var(--color-line);
        }
        .security-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .security-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }
        .security-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(214, 64, 42, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            flex-shrink: 0;
            color: var(--color-primary);
        }
        .security-item h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .security-item p {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-grid {
            display: grid;
            grid-template-columns: 0.7fr 1.3fr;
            gap: 48px;
            align-items: start;
        }
        .faq-list {
            list-style: none;
        }
        .faq-item {
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            margin-bottom: 10px;
            overflow: hidden;
            background: var(--color-card);
            box-shadow: var(--shadow-card);
            transition: border-color var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-primary);
        }
        .faq-question {
            width: 100%;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 16px;
            font-weight: 700;
            text-align: left;
            color: var(--color-ink);
            background: transparent;
            cursor: pointer;
            transition: background var(--transition-fast);
        }
        .faq-question:hover {
            background: rgba(214, 64, 42, 0.04);
        }
        .faq-question:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: -2px;
            border-radius: var(--radius-card);
        }
        .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            border: 1.5px solid var(--color-line);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            transition: transform var(--transition-smooth);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            border-color: var(--color-primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 15px;
            color: var(--color-muted);
            line-height: 1.8;
        }

        /* Contact / Subscribe */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 0.8fr;
            gap: 40px;
            align-items: start;
        }
        .contact-form {
            background: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
        }
        .contact-form h3 {
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 8px;
        }
        .contact-form p {
            font-size: 14px;
            color: var(--color-muted);
            margin-bottom: 20px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--color-ink);
        }
        .form-group input,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 1.5px solid var(--color-line);
            border-radius: var(--radius-input);
            font-size: 15px;
            background: var(--color-bg);
            transition: all var(--transition-fast);
            outline: none;
        }
        .form-group input:focus,
        .form-group select:focus {
            border-color: var(--color-primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(214, 64, 42, 0.1);
        }
        .form-group input::placeholder {
            color: #B0B0B0;
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }
        .contact-info {
            background: var(--color-ink);
            border-radius: var(--radius-card);
            padding: 32px;
            color: #fff;
        }
        .contact-info h3 {
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 12px;
            color: #fff;
        }
        .contact-info p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .contact-info-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .contact-info-list li {
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.85);
        }
        .contact-info-list li::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-accent);
            flex-shrink: 0;
        }

        /* Footer */
        .site-footer {
            background: var(--color-ink);
            color: #fff;
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 0.8fr 1fr;
            gap: 32px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 900;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-brand .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--color-primary);
            color: #fff;
            font-size: 15px;
            font-weight: 900;
            font-family: var(--font-en);
        }
        .footer-desc {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            margin-bottom: 16px;
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 14px;
            color: #fff;
            letter-spacing: 0.04em;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 40px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }
        .footer-bottom-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }

        /* Reveal animation */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
            html {
                scroll-behavior: auto;
            }
            .reveal {
                opacity: 1;
                transform: none;
            }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero .container {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-top: 40px;
                padding-bottom: 40px;
            }
            .hero-title {
                font-size: 42px;
            }
            .matrix-grid {
                grid-template-columns: 1fr;
            }
            .matrix-right {
                flex-direction: row;
            }
            .matrix-right .matrix-card {
                flex: 1;
                flex-direction: column;
            }
            .matrix-right .matrix-card-img {
                width: 100%;
                aspect-ratio: 16 / 10;
                min-height: auto;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .plan-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .plan-card.featured {
                transform: none;
            }
            .plan-card.featured:hover {
                transform: translateY(-4px);
            }
            .faq-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .contact-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-space: 56px;
            }
            .nav-links {
                display: none;
            }
            .nav-cta .btn-secondary {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .hero {
                min-height: auto;
                padding-top: calc(var(--nav-height) + 20px);
                padding-bottom: 40px;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-desc {
                font-size: 16px;
            }
            .hero-stats {
                gap: 16px;
                flex-wrap: wrap;
            }
            .hero-stat {
                font-size: 22px;
            }
            .matrix-right {
                flex-direction: column;
            }
            .matrix-right .matrix-card {
                flex-direction: row;
            }
            .matrix-right .matrix-card-img {
                width: 40%;
                aspect-ratio: auto;
                min-height: 100%;
            }
            .section-title {
                font-size: 26px;
            }
            .brand-intro {
                padding: 24px 20px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .stat-number {
                font-size: 36px;
            }
            .security-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .team-track-card {
                min-width: 220px;
                max-width: 220px;
            }
            .form-row {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .matrix-right .matrix-card {
                flex-direction: column;
            }
            .matrix-right .matrix-card-img {
                width: 100%;
                aspect-ratio: 16 / 10;
                min-height: auto;
            }
            .news-item {
                flex-direction: column;
                align-items: flex-start;
            }
            .news-item-img {
                width: 100%;
                height: 120px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stat-number {
                font-size: 32px;
            }
            .contact-form,
            .contact-info {
                padding: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .btn {
                padding: 10px 18px;
                font-size: 14px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #D6402A;
            --color-primary-dark: #B32E1C;
            --color-ink: #17191E;
            --color-bg: #FAF9F7;
            --color-card: #FFFFFF;
            --color-muted: #6B7280;
            --color-line: #E8E5E0;
            --color-accent: #F2C94C;
            --radius-card: 14px;
            --radius-button: 999px;
            --radius-input: 8px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 18px 40px rgba(0, 0, 0, 0.10);
            --font-cn: 'HarmonyOS Sans SC', 'Source Han Sans SC', 'Microsoft YaHei', system-ui, sans-serif;
            --font-en: 'Barlow Condensed', 'DIN Alternate', 'Oswald', sans-serif;
            --container-max: 1180px;
            --nav-height: 72px;
            --section-space: 100px;
            --section-space-mobile: 56px;
            --transition-fast: 200ms ease;
            --transition-smooth: 300ms ease;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-ink);
            background-color: var(--color-bg);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding-top: var(--section-space);
            padding-bottom: var(--section-space);
        }

        .section-tight {
            padding-top: 64px;
            padding-bottom: 64px;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-primary);
            margin-bottom: 12px;
            position: relative;
            padding-left: 16px;
        }

        .section-label::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 8px;
            height: 2px;
            background: var(--color-primary);
        }

        .section-title {
            font-size: 36px;
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: var(--color-ink);
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 17px;
            line-height: 1.9;
            color: var(--color-muted);
            max-width: 640px;
            margin-bottom: 40px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-button);
            font-weight: 700;
            font-size: 15px;
            line-height: 1.4;
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
            border: 1.5px solid transparent;
        }

        .btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .btn-primary {
            background-color: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        .btn-primary:hover {
            background-color: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(214, 64, 42, 0.28);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--color-ink);
            border-color: var(--color-line);
        }

        .btn-secondary:hover {
            background-color: rgba(214, 64, 42, 0.06);
            border-color: var(--color-primary);
            color: var(--color-primary);
            transform: translateY(-2px);
        }

        .btn-secondary:active {
            transform: translateY(0);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }

        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 700;
            font-size: 14px;
            color: var(--color-primary);
            transition: all var(--transition-fast);
            padding: 0;
            border: none;
            background: none;
        }

        .btn-text:hover {
            color: var(--color-primary-dark);
            gap: 10px;
        }

        .btn-text:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.03em;
            line-height: 1.5;
            background-color: rgba(242, 201, 76, 0.22);
            color: #8B6B00;
        }

        .tag-red {
            background-color: rgba(214, 64, 42, 0.1);
            color: var(--color-primary-dark);
        }

        .tag-dark {
            background-color: rgba(23, 25, 30, 0.08);
            color: var(--color-ink);
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(250, 249, 247, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-line);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-fast);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            gap: 24px;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 900;
            font-size: 20px;
            color: var(--color-ink);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background-color: var(--color-primary);
            color: #fff;
            font-family: var(--font-en);
            font-weight: 800;
            font-size: 20px;
            border-radius: 8px;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-muted);
            padding: 6px 0;
            position: relative;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--color-primary);
            transition: width var(--transition-fast);
        }

        .nav-links a:hover {
            color: var(--color-ink);
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-links a.active {
            color: var(--color-primary);
        }

        .nav-links a.active::after {
            width: 100%;
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 4px;
            border: 1px solid var(--color-line);
            background: transparent;
            transition: all var(--transition-fast);
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background-color: var(--color-ink);
            transition: all var(--transition-fast);
        }

        .nav-toggle:hover {
            border-color: var(--color-primary);
        }

        /* Hero - Category */
        .hero-category {
            position: relative;
            min-height: 400px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(23, 25, 30, 0.88) 0%, rgba(23, 25, 30, 0.65) 45%, rgba(214, 64, 42, 0.55) 100%);
            z-index: 1;
        }

        .hero-category .container {
            position: relative;
            z-index: 2;
            padding-top: 80px;
            padding-bottom: 80px;
        }

        .hero-category-content {
            max-width: 680px;
        }

        .hero-category .tag {
            margin-bottom: 16px;
        }

        .hero-category h1 {
            font-size: 46px;
            font-weight: 900;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .hero-category p {
            font-size: 17px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
            max-width: 560px;
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            padding: 16px 0;
            border-bottom: 1px solid var(--color-line);
            background-color: var(--color-bg);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-muted);
            list-style: none;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-muted);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--color-primary);
        }

        .breadcrumb .sep {
            color: var(--color-line);
            font-weight: 400;
        }

        .breadcrumb .current {
            color: var(--color-ink);
            font-weight: 700;
        }

        /* Category Intro */
        .category-intro {
            padding: 48px 0 32px;
        }

        .category-intro-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }

        .category-intro-main .section-label {
            margin-bottom: 8px;
        }

        .category-intro-main h2 {
            font-size: 30px;
            font-weight: 900;
            line-height: 1.3;
            color: var(--color-ink);
            margin-bottom: 12px;
        }

        .category-intro-main .intro-text {
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-muted);
        }

        .category-intro-side {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .intro-stat-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .intro-stat-card .stat-icon {
            width: 42px;
            height: 42px;
            background-color: rgba(214, 64, 42, 0.1);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }

        .intro-stat-card .stat-info {
            flex: 1;
        }

        .intro-stat-card .stat-number {
            font-family: var(--font-en);
            font-size: 28px;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.1;
            display: block;
        }

        .intro-stat-card .stat-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-muted);
        }

        /* Filter Toolbar */
        .filter-toolbar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 16px 0;
            border-top: 1px solid var(--color-line);
            border-bottom: 1px solid var(--color-line);
            margin-bottom: 32px;
        }

        .filter-group {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .filter-label {
            font-size: 13px;
            font-weight: 700;
            color: var(--color-muted);
            margin-right: 4px;
            white-space: nowrap;
        }

        .filter-btn {
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-muted);
            background-color: transparent;
            border: 1px solid var(--color-line);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .filter-btn:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        .filter-btn.active {
            background-color: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        .filter-btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .filter-divider {
            width: 1px;
            height: 24px;
            background-color: var(--color-line);
            margin: 0 4px;
        }

        /* Article Grid */
        .article-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-bottom: 32px;
        }

        .article-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
            transform: translateY(-3px);
        }

        .article-card .card-image {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background-color: #eee;
        }

        .article-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .article-card:hover .card-image img {
            transform: scale(1.03);
        }

        .article-card .card-image .tag {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
        }

        .article-card .card-body {
            padding: 20px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .article-card .card-date {
            font-family: var(--font-en);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--color-muted);
            margin-bottom: 8px;
            display: block;
        }

        .article-card h3 {
            font-size: 18px;
            font-weight: 800;
            line-height: 1.45;
            color: var(--color-ink);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-muted);
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .article-card .card-link {
            margin-top: auto;
        }

        .article-card-featured {
            grid-column: 1 / -1;
            flex-direction: row;
        }

        .article-card-featured .card-image {
            width: 55%;
            aspect-ratio: 16 / 10;
            flex-shrink: 0;
        }

        .article-card-featured .card-body {
            flex: 1;
            padding: 28px 32px;
        }

        .article-card-featured h3 {
            font-size: 24px;
            -webkit-line-clamp: 2;
        }

        .article-card-featured p {
            font-size: 15px;
            -webkit-line-clamp: 3;
        }

        /* Load More */
        .load-more-wrap {
            display: flex;
            justify-content: center;
            padding: 16px 0;
        }

        .load-more-btn {
            padding: 12px 40px;
            border-radius: var(--radius-button);
            font-weight: 700;
            font-size: 15px;
            color: var(--color-primary);
            background-color: transparent;
            border: 1.5px solid var(--color-primary);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .load-more-btn:hover {
            background-color: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(214, 64, 42, 0.25);
        }

        .load-more-btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        /* FAQ */
        .faq-section {
            background-color: var(--color-card);
            border-top: 1px solid var(--color-line);
            border-bottom: 1px solid var(--color-line);
        }

        .faq-grid {
            display: grid;
            grid-template-columns: 320px 1fr;
            gap: 48px;
            align-items: start;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            overflow: hidden;
            background-color: var(--color-bg);
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--color-primary);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            font-weight: 700;
            font-size: 15px;
            color: var(--color-ink);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            cursor: pointer;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--color-primary);
        }

        .faq-question .faq-icon {
            font-size: 20px;
            font-weight: 400;
            color: var(--color-primary);
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth);
        }

        .faq-answer-inner {
            padding: 0 20px 16px;
            font-size: 14px;
            line-height: 1.85;
            color: var(--color-muted);
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
        }

        /* CTA Section */
        .cta-section {
            background-color: var(--color-ink);
            padding-top: 80px;
            padding-bottom: 80px;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .cta-content h2 {
            font-size: 32px;
            font-weight: 900;
            line-height: 1.3;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-content p {
            font-size: 16px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 24px;
        }

        .cta-content .btn {
            margin-top: 8px;
        }

        .cta-form {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
        }

        .cta-form h3 {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-ink);
            margin-bottom: 20px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 700;
            color: var(--color-ink);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group select {
            width: 100%;
            padding: 10px 16px;
            border: 1px solid var(--color-line);
            border-radius: var(--radius-input);
            font-size: 14px;
            background-color: var(--color-bg);
            transition: all var(--transition-fast);
            appearance: none;
            -webkit-appearance: none;
        }

        .form-group input:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--color-primary);
            background-color: #fff;
            box-shadow: 0 0 0 3px rgba(214, 64, 42, 0.08);
        }

        .form-group input::placeholder {
            color: #aaa;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .cta-form .btn {
            width: 100%;
            margin-top: 8px;
        }

        .cta-form .form-note {
            font-size: 12px;
            color: var(--color-muted);
            margin-top: 10px;
            text-align: center;
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-ink);
            color: rgba(255, 255, 255, 0.75);
            padding-top: 60px;
            padding-bottom: 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 24px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 900;
            font-size: 18px;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand .logo-mark {
            width: 32px;
            height: 32px;
            font-size: 18px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition-fast);
        }

        .footer-col ul a:hover {
            color: var(--color-primary);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 24px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: auto;
        }

        .footer-bottom-links a {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition-fast);
        }

        .footer-bottom-links a:hover {
            color: var(--color-primary);
        }

        .footer-bottom-links span {
            color: rgba(255, 255, 255, 0.3);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 18px;
            }
            .hero-category h1 {
                font-size: 38px;
            }
            .category-intro-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .category-intro-side {
                flex-direction: row;
                flex-wrap: wrap;
            }
            .intro-stat-card {
                flex: 1;
                min-width: 200px;
            }
            .faq-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-space: var(--section-space-mobile);
                --nav-height: 60px;
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                right: -100%;
                width: 280px;
                height: calc(100vh - var(--nav-height));
                background-color: var(--color-bg);
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
                padding: 24px;
                box-shadow: -4px 0 24px rgba(0, 0, 0, 0.1);
                transition: right var(--transition-smooth);
                z-index: 999;
                overflow-y: auto;
            }
            .nav-links.open {
                right: 0;
            }
            .nav-links a {
                font-size: 16px;
                padding: 10px 0;
                width: 100%;
                border-bottom: 1px solid var(--color-line);
            }
            .nav-links a::after {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-cta .btn-secondary {
                display: none;
            }
            .hero-category {
                min-height: 320px;
            }
            .hero-category h1 {
                font-size: 32px;
            }
            .hero-category .container {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .article-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .article-card-featured {
                flex-direction: column;
            }
            .article-card-featured .card-image {
                width: 100%;
                aspect-ratio: 16 / 10;
            }
            .filter-toolbar {
                gap: 8px;
            }
            .filter-divider {
                display: none;
            }
            .filter-group {
                flex-wrap: wrap;
                gap: 4px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .footer-bottom-links {
                margin-left: 0;
            }
            .form-row {
                grid-template-columns: 1fr;
            }
            .cta-form {
                padding: 20px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .section-title {
                font-size: 26px;
            }
            .hero-category h1 {
                font-size: 28px;
            }
            .hero-category p {
                font-size: 15px;
            }
            .article-card .card-body {
                padding: 16px 18px 20px;
            }
            .article-card h3 {
                font-size: 16px;
            }
            .article-card-featured h3 {
                font-size: 18px;
            }
            .category-intro-side {
                flex-direction: column;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .cta-grid {
                gap: 20px;
            }
            .cta-content h2 {
                font-size: 24px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 14px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #D6402A;
            --color-primary-dark: #B32E1C;
            --color-ink: #17191E;
            --color-bg: #FAF9F7;
            --color-card: #FFFFFF;
            --color-muted: #6B7280;
            --color-line: #E8E5E0;
            --color-accent: #F2C94C;
            --radius-card: 14px;
            --radius-button: 999px;
            --radius-input: 8px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 18px 40px rgba(0, 0, 0, 0.10);
            --font-cn: 'HarmonyOS Sans SC', 'Source Han Sans SC', 'Microsoft YaHei', system-ui, sans-serif;
            --font-en: 'Barlow Condensed', 'DIN Alternate', 'Oswald', sans-serif;
            --container-max: 1180px;
            --nav-height: 72px;
            --section-space: 100px;
            --section-space-mobile: 56px;
            --transition-fast: 200ms ease;
            --transition-smooth: 300ms ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-ink);
            background-color: var(--color-bg);
            overflow-x: hidden;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding-top: var(--section-space);
            padding-bottom: var(--section-space);
        }

        .section-tight {
            padding-top: 64px;
            padding-bottom: 64px;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-primary);
            margin-bottom: 12px;
            position: relative;
            padding-left: 16px;
        }

        .section-label::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 8px;
            height: 2px;
            background: var(--color-primary);
        }

        .section-title {
            font-size: 36px;
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: var(--color-ink);
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 17px;
            line-height: 1.9;
            color: var(--color-muted);
            max-width: 640px;
            margin-bottom: 40px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-button);
            font-weight: 700;
            font-size: 15px;
            line-height: 1.4;
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
            border: 1.5px solid transparent;
        }

        .btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .btn-primary {
            background-color: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        .btn-primary:hover {
            background-color: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(214, 64, 42, 0.28);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--color-ink);
            border-color: var(--color-line);
        }

        .btn-secondary:hover {
            background-color: rgba(214, 64, 42, 0.06);
            border-color: var(--color-primary);
            color: var(--color-primary);
            transform: translateY(-2px);
        }

        .btn-secondary:active {
            transform: translateY(0);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }

        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 700;
            font-size: 14px;
            color: var(--color-primary);
            transition: all var(--transition-fast);
            padding: 0;
            border: none;
            background: none;
        }

        .btn-text:hover {
            color: var(--color-primary-dark);
            gap: 10px;
        }

        .btn-text:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.03em;
            line-height: 1.5;
            background-color: rgba(242, 201, 76, 0.22);
            color: #8B6B00;
        }

        .tag-red {
            background-color: rgba(214, 64, 42, 0.1);
            color: var(--color-primary-dark);
        }

        .tag-dark {
            background-color: rgba(23, 25, 30, 0.08);
            color: var(--color-ink);
        }

        .card {
            background: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(214, 64, 42, 0.35);
            transform: translateY(-4px);
        }

        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .card:hover .card-img {
            transform: scale(1.03);
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(250, 249, 247, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid transparent;
            transition: all var(--transition-smooth);
            height: var(--nav-height);
        }

        .site-header.scrolled {
            border-bottom-color: var(--color-line);
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 900;
            font-size: 20px;
            color: var(--color-ink);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            color: #fff;
            border-radius: 10px;
            font-family: var(--font-en);
            font-weight: 800;
            font-size: 20px;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }

        .nav-links a {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-muted);
            transition: color var(--transition-fast);
            position: relative;
            padding: 4px 0;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--color-primary);
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
            z-index: 1100;
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-ink);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Mobile drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            right: -100%;
            width: 300px;
            height: 100vh;
            background: var(--color-card);
            z-index: 1050;
            padding: 80px 32px 32px;
            transition: right 0.3s ease;
            box-shadow: -8px 0 32px rgba(0, 0, 0, 0.1);
            border-left: 1px solid var(--color-line);
        }

        .mobile-drawer.open {
            right: 0;
        }

        .mobile-drawer ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .mobile-drawer a {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-ink);
        }

        .mobile-drawer a.active {
            color: var(--color-primary);
        }

        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.4);
            z-index: 1040;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .drawer-overlay.show {
            opacity: 1;
        }

        /* Category Hero */
        .category-hero {
            position: relative;
            min-height: 480px;
            display: flex;
            align-items: flex-end;
            padding-top: calc(var(--nav-height) + 40px);
            padding-bottom: 48px;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            isolation: isolate;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            z-index: -1;
            background: linear-gradient(180deg, rgba(23, 25, 30, 0.55) 0%, rgba(23, 25, 30, 0.78) 60%, rgba(23, 25, 30, 0.92) 100%);
        }

        .category-hero .container {
            width: 100%;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 16px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
        }

        .breadcrumb .current {
            color: var(--color-accent);
            font-weight: 600;
        }

        .category-hero h1 {
            font-size: 52px;
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.02em;
            color: #fff;
            margin-bottom: 12px;
        }

        .category-hero .hero-desc {
            font-size: 18px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
        }

        .category-hero .hero-meta {
            display: flex;
            gap: 24px;
            margin-top: 24px;
            flex-wrap: wrap;
        }

        .category-hero .hero-meta span {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .category-hero .hero-meta .num {
            font-family: var(--font-en);
            font-size: 22px;
            font-weight: 800;
            color: var(--color-accent);
        }

        /* Filter Toolbar */
        .filter-toolbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding: 20px 24px;
            background: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            margin-top: -28px;
            margin-bottom: 48px;
            box-shadow: var(--shadow-card);
            position: relative;
            z-index: 10;
        }

        .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-label {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-muted);
            margin-right: 4px;
        }

        .filter-btn {
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-muted);
            background: transparent;
            border: 1px solid var(--color-line);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .filter-btn:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        .filter-btn.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        .filter-btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .sort-select {
            padding: 8px 16px;
            border-radius: var(--radius-input);
            border: 1px solid var(--color-line);
            font-size: 14px;
            font-weight: 600;
            color: var(--color-ink);
            background: var(--color-bg);
            cursor: pointer;
            transition: border-color var(--transition-fast);
        }

        .sort-select:focus {
            outline: none;
            border-color: var(--color-primary);
        }

        /* Featured Article */
        .featured-article {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 0;
            margin-bottom: 48px;
            overflow: hidden;
        }

        .featured-article .featured-img-wrap {
            position: relative;
            overflow: hidden;
            min-height: 360px;
        }

        .featured-article .featured-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 16 / 10;
        }

        .featured-article .featured-content {
            background: var(--color-card);
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            border: 1px solid var(--color-line);
            border-left: none;
            border-radius: 0 var(--radius-card) var(--radius-card) 0;
        }

        .featured-article .featured-content .tag {
            align-self: flex-start;
            margin-bottom: 12px;
        }

        .featured-article .featured-content h2 {
            font-size: 28px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-ink);
            margin-bottom: 12px;
        }

        .featured-article .featured-content p {
            font-size: 15px;
            line-height: 1.9;
            color: var(--color-muted);
            margin-bottom: 16px;
        }

        .featured-article .featured-content .article-date {
            font-family: var(--font-en);
            font-size: 13px;
            font-weight: 600;
            color: var(--color-muted);
        }

        /* Article Grid */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .article-card {
            display: flex;
            flex-direction: column;
        }

        .article-card .card-body {
            padding: 20px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .article-card .card-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 10px;
        }

        .article-card .article-date {
            font-family: var(--font-en);
            font-size: 13px;
            font-weight: 600;
            color: var(--color-muted);
        }

        .article-card h3 {
            font-size: 19px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--color-ink);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card p {
            font-size: 14px;
            line-height: 1.85;
            color: var(--color-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
        }

        .article-card .btn-text {
            margin-top: auto;
        }

        /* Stats Band */
        .stats-band {
            background: var(--color-ink);
            padding: 56px 0;
            margin-top: 56px;
        }

        .stats-band .container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }

        .stat-item {
            text-align: center;
        }

        .stat-item .stat-num {
            font-family: var(--font-en);
            font-size: 48px;
            font-weight: 800;
            line-height: 1.1;
            color: var(--color-accent);
            margin-bottom: 6px;
        }

        .stat-item .stat-label {
            font-size: 14px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.7);
            letter-spacing: 0.04em;
        }

        /* Info Section */
        .info-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }

        .info-section .info-text h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-ink);
            margin-bottom: 16px;
        }

        .info-section .info-text p {
            font-size: 16px;
            line-height: 2;
            color: var(--color-muted);
            margin-bottom: 16px;
        }

        .info-section .info-highlight {
            background: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }

        .info-section .info-highlight h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-ink);
            margin-bottom: 12px;
        }

        .info-section .info-highlight ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .info-section .info-highlight li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--color-muted);
            line-height: 1.7;
        }

        .info-section .info-highlight li::before {
            content: '';
            flex-shrink: 0;
            width: 6px;
            height: 6px;
            background: var(--color-primary);
            border-radius: 50%;
            margin-top: 10px;
        }

        /* Pagination */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-top: 48px;
        }

        .pagination .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-muted);
            background: var(--color-card);
            border: 1px solid var(--color-line);
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .pagination .page-btn:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        .pagination .page-btn.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        .pagination .page-btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        /* FAQ */
        .faq-wrap {
            display: grid;
            grid-template-columns: 0.7fr 1.3fr;
            gap: 48px;
            align-items: start;
        }

        .faq-wrap .faq-left h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--color-ink);
            margin-bottom: 12px;
        }

        .faq-wrap .faq-left p {
            font-size: 16px;
            color: var(--color-muted);
            line-height: 1.9;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: 10px;
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(214, 64, 42, 0.3);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 700;
            color: var(--color-ink);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--color-primary);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            position: relative;
            transition: transform var(--transition-fast);
        }

        .faq-question .faq-icon::before,
        .faq-question .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--color-primary);
            border-radius: 2px;
        }

        .faq-question .faq-icon::before {
            top: 50%;
            left: 0;
            width: 100%;
            height: 2px;
            transform: translateY(-50%);
        }

        .faq-question .faq-icon::after {
            left: 50%;
            top: 0;
            width: 2px;
            height: 100%;
            transform: translateX(-50%);
            transition: transform var(--transition-fast);
        }

        .faq-item.open .faq-icon::after {
            transform: translateX(-50%) scaleY(0);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth);
        }

        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 15px;
            line-height: 1.9;
            color: var(--color-muted);
        }

        /* CTA Section */
        .cta-section {
            background: var(--color-ink);
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(214, 64, 42, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .cta-section h2 {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.9;
            margin-bottom: 24px;
        }

        .cta-section .cta-form {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
        }

        .cta-section .cta-form h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-ink);
            margin-bottom: 16px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-ink);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group select {
            width: 100%;
            padding: 10px 16px;
            border-radius: var(--radius-input);
            border: 1px solid var(--color-line);
            font-size: 15px;
            color: var(--color-ink);
            background: var(--color-bg);
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .form-group input:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(214, 64, 42, 0.12);
        }

        .form-group input::placeholder {
            color: #B0B0B0;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .cta-form .btn {
            width: 100%;
            margin-top: 8px;
        }

        /* Footer */
        .site-footer {
            background: #121316;
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 32px;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 900;
            font-size: 20px;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom-links {
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.45);
            transition: color var(--transition-fast);
        }

        .footer-bottom-links a:hover {
            color: #fff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .stats-band .container {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }

            .cta-section .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .featured-article {
                grid-template-columns: 1fr;
            }

            .featured-article .featured-content {
                border-left: 1px solid var(--color-line);
                border-radius: 0 0 var(--radius-card) var(--radius-card);
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-space: 56px;
            }

            .nav-links {
                display: none;
            }

            .nav-cta .btn-secondary {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .mobile-drawer {
                display: block;
            }

            .drawer-overlay {
                display: block;
            }

            .section-title {
                font-size: 28px;
            }

            .category-hero {
                min-height: 380px;
                padding-top: calc(var(--nav-height) + 24px);
                padding-bottom: 32px;
            }

            .category-hero h1 {
                font-size: 36px;
            }

            .category-hero .hero-desc {
                font-size: 15px;
            }

            .category-hero .hero-meta {
                gap: 16px;
            }

            .filter-toolbar {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 16px 20px;
            }

            .article-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .featured-article .featured-content {
                padding: 24px;
            }

            .featured-article .featured-content h2 {
                font-size: 22px;
            }

            .stats-band {
                padding: 40px 0;
                margin-top: 40px;
            }

            .stat-item .stat-num {
                font-size: 36px;
            }

            .info-section {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .faq-wrap {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .faq-wrap .faq-left h2 {
                font-size: 26px;
            }

            .cta-section {
                padding: 48px 0;
            }

            .cta-section h2 {
                font-size: 26px;
            }

            .cta-section .cta-form {
                padding: 24px;
            }

            .form-row {
                grid-template-columns: 1fr;
            }

            .site-footer {
                padding: 40px 0 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .category-hero h1 {
                font-size: 28px;
            }

            .category-hero .hero-desc {
                font-size: 14px;
                line-height: 1.7;
            }

            .category-hero .hero-meta span {
                font-size: 12px;
            }

            .category-hero .hero-meta .num {
                font-size: 18px;
            }

            .filter-btn {
                padding: 5px 12px;
                font-size: 12px;
            }

            .sort-select {
                font-size: 12px;
                padding: 6px 12px;
            }

            .featured-article .featured-content h2 {
                font-size: 19px;
            }

            .article-card h3 {
                font-size: 16px;
            }

            .stats-band .container {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }

            .stat-item .stat-num {
                font-size: 30px;
            }

            .pagination .page-btn {
                min-width: 34px;
                height: 34px;
                font-size: 13px;
                padding: 0 8px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation: none !important;
                transition: none !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #D6402A;
            --color-primary-dark: #B32E1C;
            --color-ink: #17191E;
            --color-bg: #FAF9F7;
            --color-card: #FFFFFF;
            --color-muted: #6B7280;
            --color-line: #E8E5E0;
            --color-accent: #F2C94C;
            --radius-card: 14px;
            --radius-button: 999px;
            --radius-input: 8px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 18px 40px rgba(0, 0, 0, 0.10);
            --font-cn: 'HarmonyOS Sans SC', 'Source Han Sans SC', 'Microsoft YaHei', system-ui, sans-serif;
            --font-en: 'Barlow Condensed', 'DIN Alternate', 'Oswald', sans-serif;
            --container-max: 1180px;
            --nav-height: 72px;
            --section-space: 100px;
            --section-space-mobile: 56px;
            --transition-fast: 200ms ease;
            --transition-smooth: 300ms ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-ink);
            background-color: var(--color-bg);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding-top: var(--section-space);
            padding-bottom: var(--section-space);
        }

        .section-tight {
            padding-top: 56px;
            padding-bottom: 56px;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-primary);
            margin-bottom: 12px;
            position: relative;
            padding-left: 16px;
        }
        .section-label::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 8px;
            height: 2px;
            background: var(--color-primary);
        }
        .section-title {
            font-size: 36px;
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: var(--color-ink);
            margin-bottom: 16px;
        }
        .section-desc {
            font-size: 17px;
            line-height: 1.9;
            color: var(--color-muted);
            max-width: 640px;
            margin-bottom: 40px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-button);
            font-weight: 700;
            font-size: 15px;
            line-height: 1.4;
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
            border: 1.5px solid transparent;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .btn-primary {
            background-color: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }
        .btn-primary:hover {
            background-color: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(214, 64, 42, 0.28);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--color-ink);
            border-color: var(--color-line);
        }
        .btn-secondary:hover {
            background-color: rgba(214, 64, 42, 0.06);
            border-color: var(--color-primary);
            color: var(--color-primary);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }
        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 700;
            font-size: 14px;
            color: var(--color-primary);
            transition: all var(--transition-fast);
            padding: 0;
            border: none;
            background: none;
        }
        .btn-text:hover {
            color: var(--color-primary-dark);
            gap: 10px;
        }
        .btn-text:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.03em;
            line-height: 1.5;
            background-color: rgba(242, 201, 76, 0.22);
            color: #8B6B00;
        }
        .tag-red {
            background-color: rgba(214, 64, 42, 0.1);
            color: var(--color-primary-dark);
        }
        .tag-dark {
            background-color: rgba(23, 25, 30, 0.08);
            color: var(--color-ink);
        }

        /* Header / Nav */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            background: rgba(250, 249, 247, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid transparent;
            transition: all var(--transition-smooth);
        }
        .site-header.scrolled {
            border-bottom-color: var(--color-line);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 900;
            font-size: 19px;
            letter-spacing: -0.01em;
            color: var(--color-ink);
            flex-shrink: 0;
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--color-primary);
            color: #fff;
            font-family: var(--font-en);
            font-weight: 900;
            font-size: 18px;
            letter-spacing: 0;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-links a {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-ink);
            position: relative;
            padding: 6px 0;
            transition: color var(--transition-fast);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            transition: width var(--transition-smooth);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--color-primary);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            padding: 8px;
            background: transparent;
            border-radius: 8px;
            cursor: pointer;
            transition: background var(--transition-fast);
        }
        .hamburger:hover {
            background: rgba(0, 0, 0, 0.05);
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-ink);
            border-radius: 2px;
            transition: all var(--transition-smooth);
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Category Hero */
        .category-hero {
            position: relative;
            padding-top: calc(var(--nav-height) + 80px);
            padding-bottom: 80px;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            color: #fff;
            min-height: 380px;
            display: flex;
            align-items: flex-end;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(175deg, rgba(23, 25, 30, 0.75) 0%, rgba(23, 25, 30, 0.55) 55%, rgba(23, 25, 30, 0.85) 100%);
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
        }
        .breadcrumb .current {
            color: var(--color-accent);
            font-weight: 700;
        }
        .category-hero h1 {
            font-size: 48px;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 14px;
        }
        .category-hero .hero-sub {
            font-size: 18px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            max-width: 620px;
            font-weight: 400;
        }

        /* Data Snapshot */
        .data-snapshot {
            background: var(--color-ink);
            padding: 32px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .data-snapshot .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .snapshot-item {
            display: flex;
            align-items: baseline;
            gap: 10px;
        }
        .snapshot-item .num {
            font-family: var(--font-en);
            font-size: 40px;
            font-weight: 800;
            color: var(--color-accent);
            letter-spacing: 0.01em;
            line-height: 1;
        }
        .snapshot-item .label {
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.5;
        }

        /* Intro Section */
        .category-intro {
            padding-top: 56px;
            padding-bottom: 16px;
        }
        .category-intro .container {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .intro-text {
            max-width: 680px;
        }
        .intro-text p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-muted);
            margin-bottom: 12px;
        }
        .intro-text p strong {
            color: var(--color-ink);
            font-weight: 700;
        }
        .intro-aside {
            flex-shrink: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .intro-aside .stat-pill {
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: 12px;
            padding: 14px 20px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-fast);
        }
        .intro-aside .stat-pill:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
        }
        .intro-aside .stat-pill .pill-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(214, 64, 42, 0.1);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
        }
        .intro-aside .stat-pill .pill-info {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-ink);
            line-height: 1.4;
        }

        /* Filter Bar */
        .filter-bar {
            padding: 24px 0 8px;
            border-bottom: 1px solid var(--color-line);
            margin-bottom: 32px;
        }
        .filter-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-label {
            font-size: 13px;
            font-weight: 700;
            color: var(--color-muted);
            margin-right: 4px;
            letter-spacing: 0.03em;
        }
        .filter-btn {
            padding: 7px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-muted);
            background: transparent;
            border: 1px solid var(--color-line);
            transition: all var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
        }
        .filter-btn:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .filter-btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .filter-btn.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }
        .filter-select {
            padding: 7px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-ink);
            background: var(--color-card);
            border: 1px solid var(--color-line);
            cursor: pointer;
            transition: all var(--transition-fast);
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            padding-right: 34px;
        }
        .filter-select:hover,
        .filter-select:focus {
            border-color: var(--color-primary);
            outline: none;
        }

        /* Article Grid */
        .article-grid-section {
            padding-top: 8px;
            padding-bottom: 48px;
        }
        .featured-card {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 0;
            background: var(--color-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-line);
            box-shadow: var(--shadow-card);
            margin-bottom: 28px;
            transition: all var(--transition-smooth);
            cursor: pointer;
        }
        .featured-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
        }
        .featured-card .card-img {
            position: relative;
            overflow: hidden;
            min-height: 280px;
        }
        .featured-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .featured-card:hover .card-img img {
            transform: scale(1.03);
        }
        .featured-card .card-body {
            padding: 32px 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-card .card-tag-row {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
            flex-wrap: wrap;
        }
        .featured-card .card-date {
            font-family: var(--font-en);
            font-size: 13px;
            font-weight: 600;
            color: var(--color-muted);
            letter-spacing: 0.04em;
        }
        .featured-card h3 {
            font-size: 24px;
            font-weight: 800;
            line-height: 1.4;
            color: var(--color-ink);
            margin-bottom: 12px;
        }
        .featured-card p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--color-muted);
            margin-bottom: 20px;
        }
        .article-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .article-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-line);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            cursor: pointer;
        }
        .article-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
        }
        .article-card .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }
        .article-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .article-card:hover .card-img img {
            transform: scale(1.04);
        }
        .article-card .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
        }
        .article-card .card-body {
            padding: 22px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .article-card .card-date {
            font-family: var(--font-en);
            font-size: 12px;
            font-weight: 600;
            color: var(--color-muted);
            letter-spacing: 0.04em;
        }
        .article-card h3 {
            font-size: 18px;
            font-weight: 800;
            line-height: 1.45;
            color: var(--color-ink);
            margin-bottom: 10px;
        }
        .article-card p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-muted);
            margin-bottom: 16px;
            flex: 1;
        }
        .load-more-wrap {
            text-align: center;
            margin-top: 36px;
        }
        .btn-load-more {
            padding: 13px 32px;
            border-radius: 999px;
            background: transparent;
            border: 1.5px solid var(--color-primary);
            color: var(--color-primary);
            font-weight: 700;
            font-size: 15px;
            transition: all var(--transition-fast);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-load-more:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(214, 64, 42, 0.25);
        }
        .btn-load-more:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        /* FAQ Section */
        .faq-section {
            background: var(--color-card);
            border-top: 1px solid var(--color-line);
            border-bottom: 1px solid var(--color-line);
            padding-top: 64px;
            padding-bottom: 64px;
        }
        .faq-grid {
            display: grid;
            grid-template-columns: 320px 1fr;
            gap: 48px;
            align-items: start;
        }
        .faq-left .section-title {
            margin-bottom: 12px;
        }
        .faq-left p {
            font-size: 15px;
            line-height: 1.9;
            color: var(--color-muted);
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            border: 1px solid var(--color-line);
            border-radius: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
            background: var(--color-bg);
        }
        .faq-item:hover {
            border-color: var(--color-primary);
        }
        .faq-item button {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 700;
            color: var(--color-ink);
            text-align: left;
            cursor: pointer;
            background: transparent;
            transition: all var(--transition-fast);
        }
        .faq-item button:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: -2px;
        }
        .faq-item .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            transition: transform var(--transition-fast);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth);
        }
        .faq-answer p {
            padding: 0 20px 18px;
            font-size: 14px;
            line-height: 1.9;
            color: var(--color-muted);
        }

        /* CTA Section */
        .cta-section {
            padding-top: 64px;
            padding-bottom: 64px;
            background: var(--color-bg);
        }
        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .cta-left .section-title {
            margin-bottom: 12px;
        }
        .cta-left p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-muted);
            margin-bottom: 24px;
        }
        .subscribe-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }
        .form-field label {
            display: block;
            font-size: 13px;
            font-weight: 700;
            color: var(--color-ink);
            margin-bottom: 6px;
        }
        .form-field input,
        .form-field select {
            width: 100%;
            padding: 11px 16px;
            border-radius: var(--radius-input);
            border: 1px solid var(--color-line);
            background: var(--color-card);
            font-size: 14px;
            color: var(--color-ink);
            transition: all var(--transition-fast);
        }
        .form-field input:focus,
        .form-field select:focus {
            border-color: var(--color-primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(214, 64, 42, 0.08);
        }
        .cta-right {
            background: var(--color-ink);
            border-radius: var(--radius-card);
            padding: 32px 30px;
            color: #fff;
        }
        .cta-right h3 {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 16px;
            color: #fff;
        }
        .cta-contact-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .cta-contact-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.6;
        }
        .cta-contact-list li i {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: rgba(214, 64, 42, 0.2);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
        }

        /* Footer */
        .site-footer {
            background: var(--color-ink);
            color: rgba(255, 255, 255, 0.7);
            padding-top: 56px;
            padding-bottom: 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 900;
            font-size: 18px;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand .logo-mark {
            background: var(--color-primary);
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.55);
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-primary);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom-links a:hover {
            color: var(--color-primary);
        }

        /* Animations */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(12px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-up {
            animation: fadeUp 0.6s ease forwards;
        }
        .delay-1 {
            animation-delay: 80ms;
        }
        .delay-2 {
            animation-delay: 160ms;
        }
        .delay-3 {
            animation-delay: 240ms;
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --section-space: 72px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .featured-card {
                grid-template-columns: 1fr;
            }
            .featured-card .card-img {
                min-height: 220px;
                aspect-ratio: 16/9;
            }
            .featured-card .card-body {
                padding: 24px 26px;
            }
            .cta-grid {
                gap: 28px;
            }
            .faq-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-space: 56px;
                --nav-height: 64px;
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--color-bg);
                flex-direction: column;
                gap: 0;
                padding: 20px 24px;
                border-bottom: 1px solid var(--color-line);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
                transform: translateY(-120%);
                transition: transform var(--transition-smooth);
                z-index: 999;
            }
            .nav-links.open {
                transform: translateY(0);
            }
            .nav-links li {
                width: 100%;
            }
            .nav-links a {
                display: block;
                padding: 12px 0;
                font-size: 16px;
                border-bottom: 1px solid var(--color-line);
            }
            .nav-links a::after {
                display: none;
            }
            .nav-cta .btn-secondary {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .category-hero {
                padding-top: calc(var(--nav-height) + 48px);
                padding-bottom: 48px;
                min-height: 300px;
            }
            .category-hero h1 {
                font-size: 32px;
            }
            .category-hero .hero-sub {
                font-size: 15px;
            }
            .data-snapshot .container {
                justify-content: flex-start;
                gap: 16px;
            }
            .snapshot-item .num {
                font-size: 28px;
            }
            .snapshot-item .label {
                font-size: 12px;
            }
            .article-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .filter-bar .container {
                flex-direction: column;
                align-items: flex-start;
            }
            .form-row {
                grid-template-columns: 1fr;
            }
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
                gap: 8px;
            }
            .section-title {
                font-size: 28px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .category-hero {
                min-height: 260px;
            }
            .featured-card .card-body {
                padding: 18px 18px;
            }
            .featured-card h3 {
                font-size: 19px;
            }
            .article-card .card-body {
                padding: 16px 18px;
            }
            .article-card h3 {
                font-size: 16px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 13px;
            }
            .nav-cta .btn-primary {
                padding: 9px 16px;
                font-size: 13px;
            }
            .data-snapshot .container {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .cta-right {
                padding: 22px 20px;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #D6402A;
            --color-primary-dark: #B32E1C;
            --color-ink: #17191E;
            --color-bg: #FAF9F7;
            --color-card: #FFFFFF;
            --color-muted: #6B7280;
            --color-line: #E8E5E0;
            --color-accent: #F2C94C;
            --radius-card: 14px;
            --radius-button: 999px;
            --radius-input: 8px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 18px 40px rgba(0, 0, 0, 0.10);
            --font-cn: 'HarmonyOS Sans SC', 'Source Han Sans SC', 'Microsoft YaHei', system-ui, sans-serif;
            --font-en: 'Barlow Condensed', 'DIN Alternate', 'Oswald', sans-serif;
            --container-max: 1180px;
            --nav-height: 72px;
            --section-space: 100px;
            --section-space-mobile: 56px;
            --transition-fast: 200ms ease;
            --transition-smooth: 300ms ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-ink);
            background-color: var(--color-bg);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding-top: var(--section-space);
            padding-bottom: var(--section-space);
        }

        .section-tight {
            padding-top: 64px;
            padding-bottom: 64px;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-primary);
            margin-bottom: 12px;
            position: relative;
            padding-left: 16px;
        }

        .section-label::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 8px;
            height: 2px;
            background: var(--color-primary);
        }

        .section-title {
            font-size: 36px;
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: var(--color-ink);
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 17px;
            line-height: 1.9;
            color: var(--color-muted);
            max-width: 640px;
            margin-bottom: 40px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-button);
            font-weight: 700;
            font-size: 15px;
            line-height: 1.4;
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
            border: 1.5px solid transparent;
        }

        .btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .btn-primary {
            background-color: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        .btn-primary:hover {
            background-color: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(214, 64, 42, 0.28);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--color-ink);
            border-color: var(--color-line);
        }

        .btn-secondary:hover {
            background-color: rgba(214, 64, 42, 0.06);
            border-color: var(--color-primary);
            color: var(--color-primary);
            transform: translateY(-2px);
        }

        .btn-secondary:active {
            transform: translateY(0);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }

        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 700;
            font-size: 14px;
            color: var(--color-primary);
            transition: all var(--transition-fast);
            padding: 0;
            border: none;
            background: none;
        }

        .btn-text:hover {
            color: var(--color-primary-dark);
            gap: 10px;
        }

        .btn-text:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.03em;
            line-height: 1.5;
            background-color: rgba(242, 201, 76, 0.22);
            color: #8B6B00;
        }

        .tag-red {
            background-color: rgba(214, 64, 42, 0.1);
            color: var(--color-primary-dark);
        }

        .tag-dark {
            background-color: rgba(23, 25, 30, 0.08);
            color: var(--color-ink);
        }

        /* ========== 导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            background-color: rgba(250, 249, 247, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid transparent;
            transition: all var(--transition-smooth);
        }

        .site-header.scrolled {
            border-bottom-color: var(--color-line);
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.05);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 900;
            font-size: 20px;
            letter-spacing: -0.02em;
            color: var(--color-ink);
            flex-shrink: 0;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background-color: var(--color-primary);
            color: #fff;
            font-family: var(--font-en);
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        .logo:hover {
            color: var(--color-primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .nav-links a {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-ink);
            position: relative;
            padding: 6px 0;
            transition: color var(--transition-fast);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--color-primary);
            transition: width var(--transition-fast);
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--color-primary);
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            transition: background-color var(--transition-fast);
        }

        .nav-hamburger:hover {
            background-color: rgba(214, 64, 42, 0.08);
        }

        .nav-hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            border-radius: 2px;
            background-color: var(--color-ink);
            transition: all var(--transition-fast);
        }

        .nav-hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-hamburger.open span:nth-child(2) {
            opacity: 0;
        }

        .nav-hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            width: 100%;
            background-color: var(--color-bg);
            border-bottom: 1px solid var(--color-line);
            padding: 20px 24px 28px;
            z-index: 999;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-ink);
            transition: all var(--transition-fast);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background-color: rgba(214, 64, 42, 0.08);
            color: var(--color-primary);
        }

        .mobile-menu .nav-cta {
            margin-top: 16px;
            flex-direction: column;
            gap: 10px;
        }

        .mobile-menu .nav-cta .btn {
            width: 100%;
        }

        /* ========== 分类 Hero ========== */
        .category-hero {
            position: relative;
            padding-top: calc(var(--nav-height) + 80px);
            padding-bottom: 72px;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            min-height: 420px;
            display: flex;
            align-items: flex-end;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(23, 25, 30, 0.72) 0%, rgba(23, 25, 30, 0.82) 55%, rgba(23, 25, 30, 0.92) 100%);
        }

        .category-hero .container {
            position: relative;
            z-index: 1;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
        }

        .breadcrumb .current {
            color: var(--color-accent);
            font-weight: 700;
        }

        .category-hero h1 {
            font-size: 48px;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: #fff;
            margin-bottom: 16px;
        }

        .category-hero .hero-desc {
            font-size: 17px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.82);
            max-width: 620px;
        }

        /* ========== 筛选工具条 ========== */
        .filter-bar {
            background-color: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: -36px;
            position: relative;
            z-index: 5;
            box-shadow: var(--shadow-card);
        }

        .filter-group {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .filter-label {
            font-size: 13px;
            font-weight: 700;
            color: var(--color-muted);
            letter-spacing: 0.03em;
            white-space: nowrap;
        }

        .filter-option {
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-ink);
            border: 1.5px solid var(--color-line);
            background: transparent;
            transition: all var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
        }

        .filter-option:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background-color: rgba(214, 64, 42, 0.04);
        }

        .filter-option.active {
            background-color: var(--color-primary);
            border-color: var(--color-primary);
            color: #fff;
        }

        .filter-option:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .filter-select {
            padding: 6px 32px 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-ink);
            border: 1.5px solid var(--color-line);
            background-color: transparent;
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .filter-select:hover {
            border-color: var(--color-primary);
        }

        .filter-select:focus {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-color: var(--color-primary);
        }

        /* ========== 文章列表 ========== */
        .article-list-section {
            padding-top: 48px;
            padding-bottom: var(--section-space);
        }

        .article-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .article-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
            transform: translateY(-4px);
        }

        .article-card-img {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
            flex-shrink: 0;
        }

        .article-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .article-card:hover .article-card-img img {
            transform: scale(1.03);
        }

        .article-card-img .tag {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
        }

        .article-card-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .article-card-date {
            font-family: var(--font-en);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.05em;
            color: var(--color-muted);
            margin-bottom: 8px;
        }

        .article-card-title {
            font-size: 18px;
            font-weight: 800;
            line-height: 1.45;
            letter-spacing: -0.01em;
            color: var(--color-ink);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .article-card:hover .article-card-title {
            color: var(--color-primary);
        }

        .article-card-excerpt {
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
            flex: 1;
        }

        .article-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .article-card-meta {
            font-size: 12px;
            color: var(--color-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .article-card-meta .dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background-color: var(--color-line);
        }

        /* 首条大卡 */
        .article-card.featured {
            grid-column: span 2;
            display: grid;
            grid-template-columns: 1.1fr 1fr;
        }

        .article-card.featured .article-card-img {
            aspect-ratio: auto;
            min-height: 280px;
            height: 100%;
        }

        .article-card.featured .article-card-title {
            font-size: 22px;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .article-card.featured .article-card-excerpt {
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
        }

        /* ========== 社区特色区块 ========== */
        .community-features {
            padding-top: 0;
            padding-bottom: var(--section-space);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .feature-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 28px 26px;
            transition: all var(--transition-smooth);
        }

        .feature-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
        }

        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background-color: rgba(214, 64, 42, 0.1);
            color: var(--color-primary);
            font-size: 24px;
            margin-bottom: 16px;
        }

        .feature-card h3 {
            font-size: 17px;
            font-weight: 800;
            line-height: 1.4;
            color: var(--color-ink);
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-muted);
        }

        /* ========== 社区话题云 ========== */
        .topic-cloud-section {
            padding-top: 0;
            padding-bottom: var(--section-space);
        }

        .topic-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .topic-cloud-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 999px;
            background-color: var(--color-card);
            border: 1.5px solid var(--color-line);
            font-size: 14px;
            font-weight: 600;
            color: var(--color-ink);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .topic-cloud-item:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background-color: rgba(214, 64, 42, 0.04);
        }

        .topic-cloud-item .count {
            font-family: var(--font-en);
            font-size: 12px;
            font-weight: 700;
            color: var(--color-muted);
        }

        .topic-cloud-item.hot {
            background-color: rgba(214, 64, 42, 0.08);
            border-color: rgba(214, 64, 42, 0.25);
            color: var(--color-primary-dark);
        }

        /* ========== FAQ ========== */
        .faq-section {
            background-color: var(--color-ink);
            padding-top: var(--section-space);
            padding-bottom: var(--section-space);
        }

        .faq-section .section-title {
            color: #fff;
        }

        .faq-section .section-desc {
            color: rgba(255, 255, 255, 0.65);
        }

        .faq-section .section-label {
            color: var(--color-accent);
        }

        .faq-section .section-label::before {
            background-color: var(--color-accent);
        }

        .faq-layout {
            display: grid;
            grid-template-columns: 0.9fr 1.4fr;
            gap: 48px;
            align-items: start;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background-color: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(242, 201, 76, 0.4);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            text-align: left;
            transition: color var(--transition-fast);
            cursor: pointer;
        }

        .faq-question:hover {
            color: var(--color-accent);
        }

        .faq-question:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: -2px;
            border-radius: 12px;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background-color: rgba(242, 201, 76, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 400;
            color: var(--color-accent);
            transition: transform var(--transition-fast);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 250ms ease, padding 250ms ease;
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.72);
        }

        /* ========== CTA / 订阅区 ========== */
        .cta-section {
            padding-top: var(--section-space);
            padding-bottom: var(--section-space);
        }

        .cta-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: stretch;
        }

        .cta-left {
            background-color: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            box-shadow: var(--shadow-card);
        }

        .cta-left h3 {
            font-size: 22px;
            font-weight: 900;
            color: var(--color-ink);
            margin-bottom: 8px;
            line-height: 1.35;
        }

        .cta-left p {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 700;
            color: var(--color-ink);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group select {
            width: 100%;
            padding: 11px 16px;
            border-radius: var(--radius-input);
            border: 1.5px solid var(--color-line);
            background-color: var(--color-bg);
            font-size: 14px;
            color: var(--color-ink);
            transition: all var(--transition-fast);
        }

        .form-group input:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(214, 64, 42, 0.1);
            background-color: #fff;
        }

        .form-group select {
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
        }

        .cta-right {
            background-color: var(--color-ink);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .cta-right h3 {
            font-size: 22px;
            font-weight: 900;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.35;
        }

        .cta-right p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .cta-contact-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .cta-contact-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.82);
        }

        .cta-contact-list .contact-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--color-accent);
            flex-shrink: 0;
        }

        /* ========== 分页 ========== */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-top: 48px;
            flex-wrap: wrap;
        }

        .pagination-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 14px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 700;
            font-family: var(--font-en);
            color: var(--color-ink);
            border: 1.5px solid var(--color-line);
            background-color: var(--color-card);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .pagination-btn:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        .pagination-btn.active {
            background-color: var(--color-primary);
            border-color: var(--color-primary);
            color: #fff;
        }

        .pagination-btn.disabled {
            opacity: 0.45;
            cursor: not-allowed;
            pointer-events: none;
        }

        .pagination-btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background-color: #111216;
            padding-top: 64px;
            padding-bottom: 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr 0.8fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 900;
            font-size: 18px;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--color-primary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
            align-items: center;
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: auto;
        }

        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition-fast);
        }

        .footer-bottom-links a:hover {
            color: var(--color-primary);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            :root {
                --section-space: 72px;
            }

            .category-hero h1 {
                font-size: 38px;
            }

            .article-grid {
                gap: 18px;
            }

            .article-card.featured {
                grid-template-columns: 1fr;
            }

            .article-card.featured .article-card-img {
                aspect-ratio: 16/10;
                min-height: auto;
            }

            .cta-layout {
                gap: 32px;
            }

            .faq-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-space: 56px;
                --section-space-mobile: 48px;
            }

            .nav-links {
                display: none;
            }

            .nav-cta .btn-secondary {
                display: none;
            }

            .nav-hamburger {
                display: flex;
            }

            .category-hero {
                min-height: 360px;
                padding-top: calc(var(--nav-height) + 48px);
                padding-bottom: 56px;
            }

            .category-hero h1 {
                font-size: 30px;
            }

            .category-hero .hero-desc {
                font-size: 15px;
            }

            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
                margin-top: -28px;
                padding: 14px 16px;
            }

            .article-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .article-card.featured {
                grid-column: span 1;
            }

            .article-card.featured .article-card-title {
                font-size: 18px;
            }

            .article-card-title {
                font-size: 16px;
            }

            .cta-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .cta-left,
            .cta-right {
                padding: 24px 20px;
            }

            .features-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .topic-cloud {
                gap: 8px;
            }

            .topic-cloud-item {
                padding: 6px 12px;
                font-size: 13px;
            }

            .section-title {
                font-size: 26px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .footer-bottom-links {
                margin-left: 0;
            }

            .pagination-btn {
                min-width: 36px;
                height: 36px;
                padding: 0 10px;
                font-size: 13px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .category-hero h1 {
                font-size: 26px;
            }

            .category-hero .hero-desc {
                font-size: 14px;
            }

            .filter-group {
                gap: 6px;
            }

            .filter-option {
                padding: 5px 10px;
                font-size: 12px;
            }

            .filter-label {
                font-size: 12px;
            }

            .section-title {
                font-size: 22px;
            }

            .article-card-body {
                padding: 16px 16px 18px;
            }

            .article-card-title {
                font-size: 15px;
            }

            .article-card-excerpt {
                font-size: 13px;
            }

            .btn {
                padding: 10px 18px;
                font-size: 14px;
            }

            .logo {
                font-size: 17px;
            }

            .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 18px;
                border-radius: 8px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }

            html {
                scroll-behavior: auto;
            }
        }