/* roulang page: index */
:root {
            --primary: #0f0f2e;
            --primary-light: #1a1a4e;
            --primary-dark: #08081a;
            --accent: #f0b90b;
            --accent-light: #fcd34d;
            --accent-dark: #d4a208;
            --bg-dark: #0a0a1a;
            --bg-card: #111133;
            --bg-light: #ffffff;
            --text-primary: #111827;
            --text-secondary: #4b5563;
            --text-muted: #9ca3af;
            --border-color: #e5e7eb;
            --radius-sm: 0.375rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.5rem;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 30px rgba(240, 185, 11, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Inter', system-ui, sans-serif;
            line-height: 1.6;
            color: var(--text-primary);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }

        @media (min-width: 768px) {
            .container {
                padding: 0 2rem;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding: 0 2.5rem;
            }
        }

        /* ===== Navigation ===== */
        .navbar {
            background: linear-gradient(135deg, #0a0a1a 0%, #0f0f2e 50%, #1a1a4e 100%);
            border-bottom: 1px solid rgba(240, 185, 11, 0.15);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0.75rem 0;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .navbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 1.35rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 0.02em;
            flex-shrink: 0;
        }

        .navbar-brand .brand-icon {
            width: 2.25rem;
            height: 2.25rem;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0a0a1a;
            font-size: 1.1rem;
            box-shadow: 0 0 20px rgba(240, 185, 11, 0.3);
        }

        .navbar-brand .brand-badge {
            font-size: 0.6rem;
            background: var(--accent);
            color: #0a0a1a;
            padding: 0.15rem 0.5rem;
            border-radius: 999px;
            font-weight: 700;
            letter-spacing: 0.05em;
            margin-left: 0.25rem;
            vertical-align: middle;
        }

        .navbar-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }

        .navbar-links a {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-md);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .navbar-links a:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
        }

        .navbar-links a.active {
            color: var(--accent);
            background: rgba(240, 185, 11, 0.1);
        }

        .navbar-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .navbar-cta {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #0a0a1a !important;
            font-weight: 700 !important;
            padding: 0.5rem 1.5rem !important;
            border-radius: 999px !important;
            box-shadow: 0 4px 20px rgba(240, 185, 11, 0.3);
            transition: var(--transition);
            white-space: nowrap;
        }

        .navbar-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(240, 185, 11, 0.4) !important;
            background: linear-gradient(135deg, var(--accent-light), var(--accent)) !important;
            color: #0a0a1a !important;
        }

        .nav-toggle {
            display: none;
            color: #ffffff;
            font-size: 1.5rem;
            padding: 0.25rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-sm);
            width: 2.5rem;
            height: 2.5rem;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .mobile-menu {
            display: none;
            background: linear-gradient(180deg, #0f0f2e, #0a0a1a);
            border-top: 1px solid rgba(240, 185, 11, 0.1);
            padding: 1rem 0;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .mobile-menu.open {
            max-height: 600px;
        }

        .mobile-menu a {
            display: block;
            color: rgba(255, 255, 255, 0.75);
            padding: 0.75rem 1.25rem;
            font-size: 1rem;
            font-weight: 500;
            border-radius: var(--radius-md);
            transition: var(--transition);
        }

        .mobile-menu a:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.05);
        }

        .mobile-menu a.active {
            color: var(--accent);
            background: rgba(240, 185, 11, 0.08);
        }

        .mobile-menu .mobile-cta {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #0a0a1a !important;
            font-weight: 700;
            text-align: center;
            margin: 0.5rem 1.25rem 0;
            border-radius: 999px;
        }

        /* ===== Hero ===== */
        .hero {
            background: linear-gradient(135deg, #08081a 0%, #0f0f2e 40%, #1a1a4e 100%);
            padding: 5rem 0 6rem;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 80%;
            height: 200%;
            background: radial-gradient(ellipse at center, rgba(240, 185, 11, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            right: -10%;
            width: 60%;
            height: 150%;
            background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.03) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-content {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(240, 185, 11, 0.12);
            border: 1px solid rgba(240, 185, 11, 0.2);
            padding: 0.4rem 1.2rem;
            border-radius: 999px;
            font-size: 0.85rem;
            color: var(--accent-light);
            font-weight: 500;
            margin-bottom: 1.5rem;
            backdrop-filter: blur(4px);
        }

        .hero-badge i {
            font-size: 0.75rem;
        }

        .hero-title {
            font-size: clamp(2.2rem, 5vw, 3.8rem);
            font-weight: 900;
            color: #ffffff;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 1.25rem;
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-sub {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
            max-width: 640px;
            margin: 0 auto 2rem;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: center;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #0a0a1a;
            font-weight: 700;
            font-size: 1rem;
            padding: 0.85rem 2.2rem;
            border-radius: 999px;
            box-shadow: 0 4px 25px rgba(240, 185, 11, 0.35);
            transition: var(--transition);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 40px rgba(240, 185, 11, 0.45);
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border: 2px solid rgba(255, 255, 255, 0.25);
            color: #ffffff;
            font-weight: 600;
            font-size: 1rem;
            padding: 0.85rem 2.2rem;
            border-radius: 999px;
            transition: var(--transition);
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(4px);
        }

        .btn-outline:hover {
            border-color: var(--accent);
            background: rgba(240, 185, 11, 0.1);
            color: var(--accent);
            transform: translateY(-3px);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2.5rem 4rem;
            margin-top: 3.5rem;
            padding-top: 3rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

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

        .hero-stat-number {
            font-size: 2rem;
            font-weight: 900;
            color: #ffffff;
            letter-spacing: -0.02em;
        }

        .hero-stat-number .accent {
            color: var(--accent);
        }

        .hero-stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 0.25rem;
        }

        /* ===== Sections ===== */
        .section {
            padding: 5rem 0;
        }

        .section-alt {
            background: #f8f9fc;
        }

        .section-dark {
            background: var(--bg-dark);
            color: #ffffff;
        }

        .section-header {
            text-align: center;
            margin-bottom: 3.5rem;
        }

        .section-header .tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-dark);
            background: rgba(240, 185, 11, 0.1);
            padding: 0.3rem 1rem;
            border-radius: 999px;
            letter-spacing: 0.05em;
            margin-bottom: 0.75rem;
            text-transform: uppercase;
        }

        .section-title {
            font-size: clamp(1.75rem, 3vw, 2.5rem);
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.25;
            letter-spacing: -0.01em;
        }

        .section-dark .section-title {
            color: #ffffff;
        }

        .section-sub {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0.75rem auto 0;
            line-height: 1.7;
        }

        .section-dark .section-sub {
            color: rgba(255, 255, 255, 0.6);
        }

        /* ===== Cards ===== */
        .card-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }

        @media (min-width: 640px) {
            .card-grid-2 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 768px) {
            .card-grid-3 {
                grid-template-columns: repeat(3, 1fr);
            }
            .card-grid-4 {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .card-grid-3 {
                grid-template-columns: repeat(3, 1fr);
            }
            .card-grid-4 {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            padding: 1.75rem 1.5rem;
            transition: var(--transition);
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(240, 185, 11, 0.2);
        }

        .card-dark {
            background: var(--bg-card);
            border-color: rgba(255, 255, 255, 0.06);
            color: #ffffff;
        }

        .card-dark:hover {
            border-color: rgba(240, 185, 11, 0.2);
            box-shadow: var(--shadow-glow);
        }

        .card-icon {
            width: 3rem;
            height: 3rem;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            margin-bottom: 1rem;
            background: rgba(240, 185, 11, 0.1);
            color: var(--accent-dark);
        }

        .card-dark .card-icon {
            background: rgba(240, 185, 11, 0.12);
            color: var(--accent);
        }

        .card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

        .card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .card-dark p {
            color: rgba(255, 255, 255, 0.6);
        }

        .card .card-tag {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 0.2rem 0.7rem;
            border-radius: 999px;
            background: rgba(240, 185, 11, 0.1);
            color: var(--accent-dark);
            margin-bottom: 0.75rem;
            letter-spacing: 0.03em;
        }

        .card-dark .card-tag {
            background: rgba(240, 185, 11, 0.15);
            color: var(--accent-light);
        }

        /* ===== Feature Cards (分类入口) ===== */
        .feature-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            padding: 2rem 1.75rem;
            transition: var(--transition);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
            opacity: 0;
            transition: var(--transition);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: rgba(240, 185, 11, 0.2);
        }

        .feature-icon {
            width: 3.5rem;
            height: 3.5rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin: 0 auto 1.25rem;
            background: linear-gradient(135deg, rgba(240, 185, 11, 0.12), rgba(240, 185, 11, 0.05));
            color: var(--accent-dark);
            transition: var(--transition);
        }

        .feature-card:hover .feature-icon {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #0a0a1a;
            box-shadow: 0 0 30px rgba(240, 185, 11, 0.2);
        }

        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 1.25rem;
        }

        .feature-card .feature-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--accent-dark);
            transition: var(--transition);
        }

        .feature-card .feature-link:hover {
            gap: 0.7rem;
            color: var(--accent);
        }

        /* ===== News / CMS List ===== */
        .news-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.25rem;
        }

        @media (min-width: 640px) {
            .news-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .news-list {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .news-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 1.5rem;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(240, 185, 11, 0.15);
        }

        .news-card .news-category {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 0.2rem 0.7rem;
            border-radius: 999px;
            background: rgba(240, 185, 11, 0.1);
            color: var(--accent-dark);
            margin-bottom: 0.75rem;
            align-self: flex-start;
            letter-spacing: 0.03em;
        }

        .news-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 0.5rem;
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 1rem;
            flex: 1;
        }

        .news-card .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            padding-top: 0.75rem;
            margin-top: auto;
        }

        .news-card .news-meta i {
            margin-right: 0.3rem;
        }

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 3rem 2rem;
            color: var(--text-muted);
            font-size: 1rem;
            background: rgba(240, 185, 11, 0.03);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border-color);
        }

        .news-empty i {
            font-size: 2rem;
            margin-bottom: 0.75rem;
            display: block;
            color: var(--border-color);
        }

        /* ===== Steps / Process ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            counter-reset: step;
        }

        @media (min-width: 640px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .step-item {
            text-align: center;
            position: relative;
            padding: 2rem 1.5rem;
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }

        .step-item:hover {
            border-color: rgba(240, 185, 11, 0.15);
            background: rgba(255, 255, 255, 0.06);
        }

        .step-number {
            width: 3.5rem;
            height: 3.5rem;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #0a0a1a;
            font-size: 1.3rem;
            font-weight: 900;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.25rem;
            box-shadow: 0 0 30px rgba(240, 185, 11, 0.15);
        }

        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
            color: #ffffff;
        }

        .step-item p {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .faq-item {
            background: #ffffff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(240, 185, 11, 0.2);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.25rem 1.5rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            transition: var(--transition);
            gap: 1rem;
            width: 100%;
            text-align: left;
            background: none;
        }

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

        .faq-question .faq-icon {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 1.5rem;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.5rem 1.25rem;
        }

        .faq-answer p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #0f0f2e, #1a1a4e);
            padding: 5rem 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -20%;
            width: 60%;
            height: 160%;
            background: radial-gradient(ellipse at center, rgba(240, 185, 11, 0.05) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-content {
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .cta-content h2 {
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }

        .cta-content p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.65);
            max-width: 540px;
            margin: 0 auto 2rem;
            line-height: 1.7;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: center;
        }

        /* ===== Footer ===== */
        .footer {
            background: #08081a;
            color: rgba(255, 255, 255, 0.7);
            padding: 3.5rem 0 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }

        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
            }
        }

        .footer-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .footer-brand .brand-dot {
            width: 0.5rem;
            height: 0.5rem;
            background: var(--accent);
            border-radius: 50%;
            display: inline-block;
        }

        .footer-about {
            font-size: 0.88rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.5);
            max-width: 300px;
        }

        .footer h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 1rem;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .footer-links a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 0.25rem;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.35);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.35);
        }

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

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .navbar-links {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-menu {
                display: block;
            }
            .hero {
                padding: 4rem 0 5rem;
            }
            .hero-stats {
                gap: 1.5rem 2.5rem;
            }
            .hero-stat-number {
                font-size: 1.6rem;
            }
        }

        @media (min-width: 1024px) {
            .mobile-menu {
                display: none !important;
            }
            .navbar-links {
                display: flex;
            }
        }

        @media (max-width: 639px) {
            .hero {
                padding: 3rem 0 4rem;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-sub {
                font-size: 0.95rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-stats {
                flex-direction: column;
                gap: 1.25rem;
                padding-top: 2rem;
                margin-top: 2.5rem;
            }
            .section {
                padding: 3rem 0;
            }
            .section-header {
                margin-bottom: 2rem;
            }
            .card {
                padding: 1.25rem;
            }
            .feature-card {
                padding: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .navbar-brand {
                font-size: 1.1rem;
            }
            .navbar-brand .brand-icon {
                width: 1.8rem;
                height: 1.8rem;
                font-size: 0.85rem;
            }
            .navbar-brand .brand-badge {
                font-size: 0.5rem;
                padding: 0.1rem 0.4rem;
            }
            .btn-primary,
            .btn-outline {
                padding: 0.7rem 1.6rem;
                font-size: 0.9rem;
                width: 100%;
                justify-content: center;
            }
            .cta-section {
                padding: 3.5rem 0;
            }
        }

        @media (min-width: 640px) and (max-width: 1023px) {
            .hero-title {
                font-size: 2.4rem;
            }
            .hero-stats {
                gap: 2rem 3rem;
            }
            .card-grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* ===== Misc ===== */
        .border-accent {
            border-color: rgba(240, 185, 11, 0.2);
        }

        .text-accent {
            color: var(--accent-dark);
        }

        .bg-accent-soft {
            background: rgba(240, 185, 11, 0.05);
        }

        .gap-section {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-color), transparent);
            margin: 0;
        }

        .glow-dot {
            display: inline-block;
            width: 0.5rem;
            height: 0.5rem;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 10px rgba(240, 185, 11, 0.5);
            margin-right: 0.3rem;
            vertical-align: middle;
        }

        .tag-sm {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 0.15rem 0.6rem;
            border-radius: 999px;
            background: rgba(240, 185, 11, 0.1);
            color: var(--accent-dark);
            letter-spacing: 0.03em;
        }

        .scroll-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 3rem;
            height: 3rem;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #0a0a1a;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            box-shadow: 0 4px 20px rgba(240, 185, 11, 0.3);
            transition: var(--transition);
            opacity: 0;
            visibility: hidden;
            z-index: 999;
        }

        .scroll-top.visible {
            opacity: 1;
            visibility: visible;
        }

        .scroll-top:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(240, 185, 11, 0.4);
        }

        @media (max-width: 639px) {
            .scroll-top {
                width: 2.5rem;
                height: 2.5rem;
                font-size: 0.9rem;
                bottom: 1.25rem;
                right: 1.25rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1e3a8a;
            --primary-light: #3b82f6;
            --primary-dark: #1e2d5c;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #06b6d4;
            --bg-dark: #0b1121;
            --bg-card: #111827;
            --bg-section: #0f172a;
            --text-light: #f1f5f9;
            --text-muted: #94a3b8;
            --text-body: #cbd5e1;
            --border-color: rgba(59, 130, 246, 0.15);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 16px 48px rgba(59, 130, 246, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            background: var(--bg-dark);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .navbar {
            background: rgba(11, 17, 33, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(59, 130, 246, 0.08);
            padding: 0 24px;
            position: sticky;
            top: 0;
            z-index: 100;
            transition: var(--transition);
        }

        .navbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            padding: 0;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-light);
            letter-spacing: 0.5px;
            transition: var(--transition);
        }

        .navbar-brand:hover {
            color: var(--primary-light);
        }

        .brand-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--secondary);
            box-shadow: 0 0 12px rgba(245, 158, 11, 0.5);
            flex-shrink: 0;
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.7;
                transform: scale(1.15);
            }
        }

        .navbar-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }

        .navbar-links a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: var(--radius-xs);
            transition: var(--transition);
            position: relative;
            letter-spacing: 0.3px;
        }

        .navbar-links a:hover {
            color: var(--text-light);
            background: rgba(59, 130, 246, 0.08);
        }

        .navbar-links a.active {
            color: var(--text-light);
            background: rgba(59, 130, 246, 0.12);
        }

        .navbar-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--secondary);
        }

        .navbar-cta {
            background: linear-gradient(135deg, var(--secondary), #d97706) !important;
            color: #0b1121 !important;
            font-weight: 600 !important;
            padding: 8px 22px !important;
            border-radius: var(--radius-xs) !important;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.25);
            transition: var(--transition) !important;
        }

        .navbar-cta:hover {
            transform: translateY(-1px) scale(1.02);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.35) !important;
            background: linear-gradient(135deg, #fbbf24, #f59e0b) !important;
        }

        .navbar-cta i {
            font-size: 0.8rem;
            transition: var(--transition);
        }

        .navbar-cta:hover i {
            transform: translateX(3px);
        }

        /* Mobile menu toggle */
        .navbar-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-light);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-xs);
            transition: var(--transition);
        }

        .navbar-toggle:hover {
            background: rgba(59, 130, 246, 0.08);
        }

        /* ===== 页面通用 ===== */
        .page-hero {
            padding: 80px 0 60px;
            background: linear-gradient(180deg, rgba(30, 58, 138, 0.12) 0%, transparent 100%);
            border-bottom: 1px solid rgba(59, 130, 246, 0.06);
            text-align: center;
        }

        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .page-hero h1 span {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-hero p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto 24px;
        }

        .page-hero .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .hero-tag {
            background: rgba(59, 130, 246, 0.1);
            border: 1px solid rgba(59, 130, 246, 0.15);
            color: var(--text-light);
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition);
        }

        .hero-tag:hover {
            background: rgba(59, 130, 246, 0.2);
            border-color: rgba(59, 130, 246, 0.3);
            transform: translateY(-1px);
        }

        /* ===== 板块标题 ===== */
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }

        .section-sub {
            color: var(--text-muted);
            font-size: 1rem;
            margin-bottom: 40px;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header .section-title::after {
            content: '';
            display: block;
            width: 48px;
            height: 3px;
            background: var(--secondary);
            margin: 12px auto 0;
            border-radius: 4px;
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 28px 24px;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }

        .card:hover {
            border-color: rgba(59, 130, 246, 0.25);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--text-light);
            background: rgba(59, 130, 246, 0.12);
            margin-bottom: 16px;
            transition: var(--transition);
        }

        .card:hover .card-icon {
            background: rgba(59, 130, 246, 0.2);
            transform: scale(1.05);
        }

        .card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 8px;
        }

        .card p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.65;
        }

        .card .card-badge {
            display: inline-block;
            background: rgba(245, 158, 11, 0.12);
            color: var(--secondary-light);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 12px;
            margin-top: 12px;
            letter-spacing: 0.3px;
        }

        /* ===== 赛事网格 ===== */
        .sports-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .sport-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 28px 24px 24px;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
            text-align: center;
        }

        .sport-card:hover {
            border-color: rgba(59, 130, 246, 0.25);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .sport-card .sport-icon {
            font-size: 2.4rem;
            margin-bottom: 14px;
            display: block;
            color: var(--secondary);
            transition: var(--transition);
        }

        .sport-card:hover .sport-icon {
            transform: scale(1.1);
        }

        .sport-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 6px;
        }

        .sport-card .sport-count {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }

        .sport-card .sport-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 6px;
        }

        .sport-card .sport-tags span {
            background: rgba(59, 130, 246, 0.08);
            border: 1px solid rgba(59, 130, 246, 0.1);
            color: var(--text-muted);
            font-size: 0.75rem;
            padding: 2px 12px;
            border-radius: 12px;
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }

        .stat-card:hover {
            border-color: rgba(59, 130, 246, 0.2);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .stat-card .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.1;
            margin-bottom: 6px;
        }

        .stat-card .stat-number .stat-suffix {
            font-size: 1.4rem;
            color: var(--secondary);
        }

        .stat-card .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-card {
            text-align: center;
            padding: 32px 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            transition: var(--transition);
            position: relative;
        }

        .step-card:hover {
            border-color: rgba(59, 130, 246, 0.2);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .step-card .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 16px rgba(59, 130, 246, 0.25);
        }

        .step-card h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 6px;
        }

        .step-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 0;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(59, 130, 246, 0.2);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-light);
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
            font-family: inherit;
        }

        .faq-question:hover {
            background: rgba(59, 130, 246, 0.04);
        }

        .faq-question i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
            color: var(--secondary);
        }

        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            display: none;
        }

        .faq-answer.open {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(30, 58, 138, 0.15), rgba(6, 182, 212, 0.08));
            border: 1px solid rgba(59, 130, 246, 0.1);
            border-radius: var(--radius);
            padding: 56px 40px;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 12px;
        }

        .cta-section p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 28px;
        }

        .cta-section .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: var(--radius-xs);
            font-size: 1rem;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            font-family: inherit;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--secondary), #d97706);
            color: #0b1121;
            box-shadow: 0 4px 20px rgba(245, 158, 11, 0.25);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(245, 158, 11, 0.35);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-light);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: rgba(11, 17, 33, 0.8);
            border-top: 1px solid rgba(59, 130, 246, 0.06);
            padding: 56px 0 32px;
            margin-top: 80px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .footer-about {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.88rem;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--secondary-light);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-bottom a:hover {
            color: var(--secondary-light);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .sports-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .navbar .container {
                height: 64px;
            }
            .navbar-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(11, 17, 33, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 20px;
                border-bottom: 1px solid rgba(59, 130, 246, 0.08);
                gap: 4px;
                box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
            }

            .navbar-links.open {
                display: flex;
            }

            .navbar-links a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-xs);
            }

            .navbar-links a.active::after {
                display: none;
            }

            .navbar-links a.active {
                background: rgba(59, 130, 246, 0.12);
            }

            .navbar-cta {
                margin-top: 6px;
                justify-content: center;
            }

            .navbar-toggle {
                display: block;
            }

            .page-hero {
                padding: 48px 0 40px;
            }

            .page-hero h1 {
                font-size: 1.8rem;
            }

            .page-hero p {
                font-size: 1rem;
            }

            .section-title {
                font-size: 1.6rem;
            }

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

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

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

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-section {
                padding: 36px 20px;
            }

            .cta-section h2 {
                font-size: 1.5rem;
            }

            .stat-card .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .page-hero h1 {
                font-size: 1.5rem;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

            .stat-card {
                padding: 20px 12px;
            }

            .stat-card .stat-number {
                font-size: 1.6rem;
            }

            .btn {
                padding: 10px 24px;
                font-size: 0.9rem;
                width: 100%;
                justify-content: center;
            }

            .cta-buttons {
                flex-direction: column;
            }

            .hero-tags {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== 实用工具 ===== */
        .mt-80 {
            margin-top: 80px;
        }
        .mb-80 {
            margin-bottom: 80px;
        }
        .py-80 {
            padding-top: 80px;
            padding-bottom: 80px;
        }

        @media (max-width: 768px) {
            .mt-80 {
                margin-top: 48px;
            }
            .mb-80 {
                margin-bottom: 48px;
            }
            .py-80 {
                padding-top: 48px;
                padding-bottom: 48px;
            }
        }

        /* 选中高亮 */
        ::selection {
            background: rgba(245, 158, 11, 0.25);
            color: #fff;
        }

        /* 滚动条 */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(59, 130, 246, 0.25);
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(59, 130, 246, 0.4);
        }

/* roulang page: article */
:root {
            --primary: #1e2d8f;
            --primary-light: #3b6eff;
            --primary-dark: #0f172a;
            --accent: #f0b90b;
            --accent-light: #ffe566;
            --bg-dark: #0f172a;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-muted: #6b7280;
            --text-light: #f8fafc;
            --border-light: #e5e7eb;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: '"PingFang SC"', '"Noto Sans SC"', '"Helvetica Neue"', 'Arial', 'sans-serif';
            color: var(--text-dark);
            background: #f5f7fa;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Navigation ===== */
        .header {
            background: var(--bg-dark);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            box-shadow: 0 2px 30px rgba(0,0,0,0.3);
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
        }

        .logo .brand-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 12px rgba(240, 185, 11, 0.5);
            flex-shrink: 0;
        }

        .navbar-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .navbar-links a {
            padding: 8px 18px;
            border-radius: 8px;
            font-size: 0.95rem;
            font-weight: 500;
            color: rgba(255,255,255,0.75);
            transition: var(--transition);
            position: relative;
        }

        .navbar-links a:hover {
            color: #fff;
            background: rgba(255,255,255,0.08);
        }

        .navbar-links a.active {
            color: #fff;
            background: rgba(59, 110, 255, 0.25);
        }

        .navbar-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent);
        }

        .navbar-cta {
            background: linear-gradient(135deg, var(--accent), #d49406) !important;
            color: #0f172a !important;
            font-weight: 600 !important;
            padding: 10px 24px !important;
            border-radius: 10px !important;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 15px rgba(240, 185, 11, 0.35);
        }

        .navbar-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(240, 185, 11, 0.45) !important;
            background: linear-gradient(135deg, #ffe566, var(--accent)) !important;
        }

        .navbar-cta i {
            font-size: 0.85rem;
        }

        .mobile-toggle {
            display: none;
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.12);
            color: #fff;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            font-size: 1.3rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .mobile-toggle:hover {
            background: rgba(255,255,255,0.15);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            background: #fff;
            border-bottom: 1px solid var(--border-light);
            padding: 14px 0;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

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

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

        .breadcrumb span {
            color: var(--text-dark);
            font-weight: 500;
        }

        .breadcrumb .sep {
            margin: 0 10px;
            color: #ccc;
        }

        /* ===== Article Layout ===== */
        .article-section {
            padding: 48px 0 60px;
        }

        .article-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }

        .article-main {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            padding: 40px 44px;
            transition: var(--transition);
        }

        .article-main:hover {
            box-shadow: var(--shadow-md);
        }

        .article-header {
            margin-bottom: 32px;
            padding-bottom: 24px;
            border-bottom: 2px solid #f0f2f5;
        }

        .article-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, #eef5ff, #d9e8ff);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .article-category i {
            font-size: 0.7rem;
        }

        .article-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-dark);
            margin-bottom: 18px;
            letter-spacing: -0.3px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta i {
            font-size: 0.85rem;
            color: var(--primary-light);
        }

        .article-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: #2d3748;
        }

        .article-body p {
            margin-bottom: 1.6em;
        }

        .article-body h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-top: 2em;
            margin-bottom: 0.8em;
            color: var(--primary-dark);
            border-left: 4px solid var(--accent);
            padding-left: 16px;
        }

        .article-body h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-top: 1.6em;
            margin-bottom: 0.6em;
            color: var(--text-dark);
        }

        .article-body ul,
        .article-body ol {
            margin-bottom: 1.6em;
            padding-left: 1.8em;
        }

        .article-body li {
            margin-bottom: 0.5em;
        }

        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: #fffbeb;
            padding: 16px 24px;
            margin: 1.6em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: #5b4a1a;
        }

        .article-body a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

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

        .article-body img {
            border-radius: var(--radius-sm);
            margin: 1.6em 0;
            box-shadow: var(--shadow-sm);
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.6em 0;
            font-size: 0.95rem;
        }

        .article-body th,
        .article-body td {
            border: 1px solid var(--border-light);
            padding: 10px 16px;
            text-align: left;
        }

        .article-body th {
            background: #f8fafc;
            font-weight: 600;
            color: var(--primary-dark);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
        }

        .article-tags .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            background: #f0f2f5;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .article-tags .tag:hover {
            background: var(--primary-light);
            color: #fff;
        }

        .article-nav {
            display: flex;
            justify-content: space-between;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 2px solid #f0f2f5;
            gap: 20px;
        }

        .article-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--primary-light);
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            background: #f8fafc;
            transition: var(--transition);
            max-width: 48%;
        }

        .article-nav a:hover {
            background: var(--primary-light);
            color: #fff;
        }

        .article-nav .nav-next {
            text-align: right;
            flex-direction: row-reverse;
        }

        /* ===== Sidebar ===== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .sidebar-card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            transition: var(--transition);
        }

        .sidebar-card:hover {
            box-shadow: var(--shadow-md);
        }

        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .sidebar-card h3 i {
            color: var(--accent);
            font-size: 1rem;
        }

        .sidebar-card h3::after {
            content: '';
            flex: 1;
            height: 2px;
            background: linear-gradient(90deg, var(--border-light), transparent);
            margin-left: 8px;
        }

        .sidebar-category-list {
            list-style: none;
            padding: 0;
        }

        .sidebar-category-list li {
            border-bottom: 1px solid #f0f2f5;
        }

        .sidebar-category-list li:last-child {
            border-bottom: none;
        }

        .sidebar-category-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-dark);
            transition: var(--transition);
        }

        .sidebar-category-list a:hover {
            color: var(--primary-light);
            padding-left: 6px;
        }

        .sidebar-category-list a span {
            background: #eef5ff;
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 12px;
        }

        .sidebar-post-list {
            list-style: none;
            padding: 0;
        }

        .sidebar-post-list li {
            padding: 12px 0;
            border-bottom: 1px solid #f0f2f5;
        }

        .sidebar-post-list li:last-child {
            border-bottom: none;
        }

        .sidebar-post-list a {
            display: block;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-dark);
            line-height: 1.5;
            transition: var(--transition);
        }

        .sidebar-post-list a:hover {
            color: var(--primary-light);
        }

        .sidebar-post-list .post-date {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 4px;
            display: block;
        }

        .sidebar-cta {
            background: linear-gradient(135deg, var(--bg-dark), #1a2a4a);
            color: #fff;
            padding: 32px 24px;
            border-radius: var(--radius);
            text-align: center;
        }

        .sidebar-cta h4 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .sidebar-cta p {
            font-size: 0.9rem;
            opacity: 0.8;
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .sidebar-cta .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #0f172a;
            font-weight: 600;
            padding: 12px 30px;
            border-radius: 10px;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(240, 185, 11, 0.3);
        }

        .sidebar-cta .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(240, 185, 11, 0.4);
            background: #ffe566;
        }

        /* ===== Related Posts ===== */
        .related-section {
            background: #fff;
            padding: 48px 0 56px;
            border-top: 1px solid var(--border-light);
        }

        .related-section .section-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 28px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .related-section .section-title i {
            color: var(--accent);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: #f8fafc;
            border-radius: var(--radius);
            padding: 24px 22px;
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }

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

        .related-card .cat-tag {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            background: #eef5ff;
            padding: 2px 12px;
            border-radius: 12px;
            display: inline-block;
            margin-bottom: 10px;
        }

        .related-card h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 10px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }

        .related-card .meta {
            font-size: 0.8rem;
            color: #9ca3af;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        /* ===== Error State ===== */
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
        }

        .not-found-box .nf-icon {
            font-size: 4rem;
            color: #d1d5db;
            margin-bottom: 20px;
        }

        .not-found-box h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }

        .not-found-box p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .not-found-box .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-light);
            color: #fff;
            font-weight: 600;
            padding: 12px 32px;
            border-radius: 10px;
            transition: var(--transition);
        }

        .not-found-box .btn-home:hover {
            background: var(--primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 56px 0 0;
            border-top: 1px solid rgba(255,255,255,0.06);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand .brand-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 12px rgba(240, 185, 11, 0.4);
            flex-shrink: 0;
        }

        .footer-about {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.55);
            max-width: 320px;
        }

        .footer h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }

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

        .footer-links a {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.55);
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-links a i {
            width: 16px;
            text-align: center;
            font-size: 0.85rem;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
            flex-wrap: wrap;
            gap: 12px;
        }

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

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

        /* ===== Mobile Nav ===== */
        @media (max-width: 1024px) {
            .article-grid {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .header .container {
                height: 64px;
            }

            .navbar-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-dark);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid rgba(255,255,255,0.08);
                box-shadow: 0 20px 40px rgba(0,0,0,0.4);
                gap: 4px;
            }

            .navbar-links.open {
                display: flex;
            }

            .navbar-links a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
            }

            .navbar-links a.active::after {
                display: none;
            }

            .navbar-links a.active {
                background: rgba(59, 110, 255, 0.2);
                border-left: 3px solid var(--accent);
            }

            .navbar-cta {
                margin-top: 8px;
                justify-content: center;
            }

            .mobile-toggle {
                display: flex;
            }

            .article-main {
                padding: 24px 20px;
            }

            .article-title {
                font-size: 1.4rem;
            }

            .article-body {
                font-size: 0.98rem;
            }

            .article-nav {
                flex-direction: column;
            }

            .article-nav a {
                max-width: 100%;
            }

            .related-grid {
                grid-template-columns: 1fr;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .sidebar {
                order: -1;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .article-section {
                padding: 28px 0 40px;
            }

            .article-title {
                font-size: 1.2rem;
            }

            .article-meta {
                gap: 12px;
                font-size: 0.82rem;
            }

            .article-body h2 {
                font-size: 1.2rem;
                padding-left: 12px;
            }

            .article-body blockquote {
                padding: 12px 16px;
            }

            .related-card {
                padding: 18px 16px;
            }

            .sidebar-card {
                padding: 20px 16px;
            }

            .sidebar-cta {
                padding: 24px 16px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1e3a5f;
            --primary-light: #2a5298;
            --primary-dark: #0f2440;
            --accent: #f0b429;
            --accent-light: #f7d070;
            --accent-dark: #d4941a;
            --bg-dark: #0b1622;
            --bg-card: #112240;
            --bg-section: #0d1a2e;
            --text-light: #f1f5f9;
            --text-muted: #94a3b8;
            --text-dark: #cbd5e1;
            --border-color: rgba(240, 180, 41, 0.15);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, textarea {
            font-family: inherit;
        }
        ::selection {
            background: var(--accent);
            color: var(--bg-dark);
        }
        .glass {
            background: rgba(17, 34, 64, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-color);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.2;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--bg-dark);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(240, 180, 41, 0.3);
            color: var(--bg-dark);
        }
        .btn-outline {
            background: transparent;
            color: var(--accent);
            border: 2px solid var(--accent);
        }
        .btn-outline:hover {
            background: var(--accent);
            color: var(--bg-dark);
            transform: translateY(-2px);
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 0.75rem;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1.1rem;
            max-width: 680px;
            margin: 0 auto 3rem;
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 2rem;
            transition: var(--transition);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(240, 180, 41, 0.3);
        }
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(240, 180, 41, 0.12);
            color: var(--accent);
            border: 1px solid rgba(240, 180, 41, 0.2);
        }
        .step-number {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--bg-dark);
            font-weight: 800;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .navbar-cta {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--bg-dark) !important;
            padding: 10px 24px !important;
            border-radius: 50px;
            font-weight: 700;
        }
        .navbar-cta:hover {
            box-shadow: 0 4px 20px rgba(240, 180, 41, 0.3);
            transform: translateY(-1px);
            color: var(--bg-dark) !important;
        }
        .navbar-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .navbar-links a {
            color: var(--text-dark);
            padding: 8px 16px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            white-space: nowrap;
        }
        .navbar-links a:hover {
            color: var(--accent);
            background: rgba(240, 180, 41, 0.08);
        }
        .navbar-links a.active {
            color: var(--accent);
            background: rgba(240, 180, 41, 0.12);
        }
        @media (max-width: 768px) {
            .navbar-links {
                gap: 4px;
                justify-content: center;
            }
            .navbar-links a {
                padding: 6px 12px;
                font-size: 0.85rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .container {
                padding: 0 16px;
            }
            .card {
                padding: 1.4rem;
            }
            .hero-title {
                font-size: 2rem !important;
            }
        }
        @media (max-width: 520px) {
            .navbar-links a {
                font-size: 0.78rem;
                padding: 4px 10px;
            }
            .navbar-links .navbar-cta {
                padding: 6px 16px !important;
                font-size: 0.8rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
        }
        .footer {
            background: var(--primary-dark);
            border-top: 1px solid var(--border-color);
            padding: 4rem 0 2rem;
            margin-top: 4rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 2.5rem;
            margin-bottom: 3rem;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 1rem;
        }
        .brand-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
        }
        .footer-about {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer h4 {
            color: var(--text-light);
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.92rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            color: var(--text-muted);
            font-size: 0.88rem;
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        @media (max-width: 600px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        .tutorial-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 2rem;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .tutorial-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
            opacity: 0;
            transition: var(--transition);
        }
        .tutorial-card:hover::before {
            opacity: 1;
        }
        .tutorial-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(240, 180, 41, 0.25);
        }
        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 1.2rem 0;
            cursor: pointer;
        }
        .faq-item summary {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-light);
            padding: 0.4rem 0;
            outline: none;
            list-style: none;
            display: flex;
            align-items: center;
            gap: 12px;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::before {
            content: '+';
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--accent);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item[open] summary::before {
            content: '−';
        }
        .faq-item summary:hover {
            color: var(--accent);
        }
        .faq-item p {
            color: var(--text-muted);
            padding: 0.8rem 0 0.4rem 1.8rem;
            line-height: 1.8;
        }
        .hero-gradient {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--bg-dark) 50%, rgba(30, 58, 95, 0.6) 100%);
            position: relative;
            overflow: hidden;
        }
        .hero-gradient::after {
            content: '';
            position: absolute;
            top: -30%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(240, 180, 41, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240, 180, 41, 0.1);
            border: 1px solid rgba(240, 180, 41, 0.2);
            padding: 6px 18px;
            border-radius: 50px;
            color: var(--accent);
            font-size: 0.9rem;
            font-weight: 500;
        }
        .icon-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            background: rgba(240, 180, 41, 0.1);
            color: var(--accent);
            flex-shrink: 0;
            transition: var(--transition);
        }
        .tutorial-card:hover .icon-circle {
            background: rgba(240, 180, 41, 0.2);
            transform: scale(1.05);
        }
        .grid-auto-fit {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        @media (max-width: 768px) {
            .grid-3 {
                grid-template-columns: 1fr;
            }
            .grid-auto-fit {
                grid-template-columns: 1fr;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        .tab-btn {
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            border: 1px solid var(--border-color);
            background: transparent;
            color: var(--text-muted);
            cursor: pointer;
            transition: var(--transition);
        }
        .tab-btn.active, .tab-btn:hover {
            background: var(--accent);
            color: var(--bg-dark);
            border-color: var(--accent);
        }
        .flow-line {
            position: relative;
            padding-left: 2rem;
        }
        .flow-line::before {
            content: '';
            position: absolute;
            left: 23px;
            top: 48px;
            bottom: 20px;
            width: 2px;
            background: linear-gradient(to bottom, var(--accent), transparent);
        }

/* roulang page: category3 */
:root {
            --primary: #1a1a2e;
            --primary-light: #16213e;
            --accent: #e94560;
            --accent-hover: #d63850;
            --accent-glow: rgba(233, 69, 96, 0.3);
            --gold: #f0a500;
            --gold-light: #f7c948;
            --bg-dark: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-card-hover: #222240;
            --text-main: #f1f1f6;
            --text-muted: #9a9abf;
            --text-dim: #6b6b8d;
            --border-color: #2a2a4a;
            --border-glow: rgba(233, 69, 96, 0.2);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 40px rgba(233, 69, 96, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 15, 26, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(42, 42, 74, 0.6);
            transition: var(--transition);
        }

        .header.scrolled {
            background: rgba(15, 15, 26, 0.96);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }

        .logo .brand-dot {
            display: inline-block;
            width: 12px;
            height: 12px;
            background: var(--accent);
            border-radius: 50%;
            box-shadow: 0 0 20px var(--accent-glow);
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 20px var(--accent-glow);
            }
            50% {
                box-shadow: 0 0 40px var(--accent-glow), 0 0 60px rgba(233, 69, 96, 0.1);
            }
        }

        .navbar-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: nowrap;
        }

        .navbar-links a {
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            white-space: nowrap;
            position: relative;
        }

        .navbar-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .navbar-links a.active {
            color: #fff;
            background: rgba(233, 69, 96, 0.15);
            box-shadow: inset 0 0 0 1px rgba(233, 69, 96, 0.2);
        }

        .navbar-links a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }

        .navbar-cta {
            background: var(--accent) !important;
            color: #fff !important;
            padding: 10px 24px !important;
            border-radius: 50px !important;
            font-weight: 600 !important;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 20px var(--accent-glow);
            transition: var(--transition) !important;
        }

        .navbar-cta:hover {
            background: var(--accent-hover) !important;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px var(--accent-glow) !important;
        }

        .navbar-cta i {
            font-size: 14px;
            transition: var(--transition);
        }

        .navbar-cta:hover i {
            transform: translateX(4px);
        }

        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            background: none;
            border: none;
        }

        .menu-toggle span {
            display: block;
            width: 28px;
            height: 2.5px;
            background: var(--text-main);
            border-radius: 4px;
            transition: var(--transition);
        }

        .menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Hero ===== */
        .hero {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 50%, #0f0f1a 100%);
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(233, 69, 96, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(240, 165, 0, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(233, 69, 96, 0.12);
            border: 1px solid rgba(233, 69, 96, 0.2);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 14px;
            color: var(--accent);
            font-weight: 500;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }

        .hero-badge i {
            font-size: 14px;
        }

        .hero-title {
            font-size: clamp(2.4rem, 6vw, 4rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent), var(--gold));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 24px var(--accent-glow);
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-3px);
            box-shadow: 0 8px 40px var(--accent-glow);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-main);
            border: 1.5px solid var(--border-color);
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(233, 69, 96, 0.08);
        }

        .btn-sm {
            padding: 10px 20px;
            font-size: 14px;
        }

        .btn-gold {
            background: linear-gradient(135deg, var(--gold), var(--gold-light));
            color: #1a1a2e;
            font-weight: 700;
            box-shadow: 0 4px 24px rgba(240, 165, 0, 0.3);
        }

        .btn-gold:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 40px rgba(240, 165, 0, 0.4);
        }

        /* ===== Section通用 ===== */
        .section {
            padding: 80px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 3px;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 800;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.8;
        }

        /* ===== Steps / Timeline ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 28px;
            counter-reset: step;
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 36px 28px;
            position: relative;
            transition: var(--transition);
            counter-increment: step;
        }

        .step-card:hover {
            border-color: rgba(233, 69, 96, 0.25);
            transform: translateY(-6px);
            box-shadow: var(--shadow-card);
            background: var(--bg-card-hover);
        }

        .step-number {
            font-size: 48px;
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent), var(--gold));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            opacity: 0.3;
            line-height: 1;
            margin-bottom: 8px;
            font-feature-settings: "tnum";
        }

        .step-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .step-card p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
        }

        .step-card .step-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
            background: rgba(233, 69, 96, 0.1);
            color: var(--accent);
        }

        /* ===== 教程分类卡片 ===== */
        .tutorial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 28px;
        }

        .tutorial-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }

        .tutorial-card:hover {
            border-color: rgba(233, 69, 96, 0.25);
            transform: translateY(-6px);
            box-shadow: var(--shadow-card);
        }

        .tutorial-card-top {
            padding: 28px 28px 16px;
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }

        .tutorial-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            flex-shrink: 0;
            background: rgba(233, 69, 96, 0.1);
            color: var(--accent);
        }

        .tutorial-icon.gold {
            background: rgba(240, 165, 0, 0.1);
            color: var(--gold);
        }

        .tutorial-icon.green {
            background: rgba(16, 185, 129, 0.1);
            color: #10b981;
        }

        .tutorial-icon.blue {
            background: rgba(59, 130, 246, 0.1);
            color: #3b82f6;
        }

        .tutorial-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .tutorial-card .tutorial-desc {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
        }

        .tutorial-card-body {
            padding: 0 28px 24px;
        }

        .tutorial-steps {
            list-style: none;
            padding: 0;
            margin: 16px 0 0;
        }

        .tutorial-steps li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 8px 0;
            font-size: 14px;
            color: var(--text-muted);
            border-bottom: 1px solid rgba(42, 42, 74, 0.4);
        }

        .tutorial-steps li:last-child {
            border-bottom: none;
        }

        .tutorial-steps li i {
            color: var(--accent);
            font-size: 14px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .tutorial-steps li .step-label {
            color: var(--text-main);
            font-weight: 500;
        }

        .tutorial-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(233, 69, 96, 0.1);
            color: var(--accent);
            margin-top: 12px;
        }

        .tutorial-tag.gold {
            background: rgba(240, 165, 0, 0.1);
            color: var(--gold);
        }

        .tutorial-tag.green {
            background: rgba(16, 185, 129, 0.1);
            color: #10b981;
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-item:hover {
            border-color: rgba(233, 69, 96, 0.15);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            gap: 16px;
            user-select: none;
        }

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

        .faq-question i {
            font-size: 16px;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            display: none;
        }

        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1a1a2e, #16213e);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at center, rgba(233, 69, 96, 0.05) 0%, transparent 60%);
            pointer-events: none;
        }

        .cta-content {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 24px 0;
        }

        .cta-content h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-content p {
            color: var(--text-muted);
            font-size: 17px;
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }

        /* ===== Footer ===== */
        .footer {
            background: #0a0a14;
            border-top: 1px solid var(--border-color);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand .brand-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            background: var(--accent);
            border-radius: 50%;
            box-shadow: 0 0 16px var(--accent-glow);
        }

        .footer-about {
            color: var(--text-dim);
            font-size: 14px;
            line-height: 1.8;
            max-width: 280px;
        }

        .footer h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

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

        .footer-links a {
            color: var(--text-dim);
            font-size: 14px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-links a:hover {
            color: var(--accent);
            transform: translateX(4px);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding: 24px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-dim);
        }

        .footer-bottom a {
            color: var(--text-dim);
            transition: var(--transition);
        }

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

        /* ===== 标签 / Badge ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(233, 69, 96, 0.1);
            color: var(--accent);
        }

        .badge.gold {
            background: rgba(240, 165, 0, 0.1);
            color: var(--gold);
        }

        .badge.green {
            background: rgba(16, 185, 129, 0.1);
            color: #10b981;
        }

        .badge.blue {
            background: rgba(59, 130, 246, 0.1);
            color: #3b82f6;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .section {
                padding: 60px 0;
            }
            .hero {
                padding: 120px 0 60px;
            }
            .tutorial-grid {
                grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }

            .navbar-links {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(15, 15, 26, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 6px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                pointer-events: none;
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
            }

            .navbar-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }

            .navbar-links a {
                width: 100%;
                padding: 12px 18px;
                font-size: 16px;
            }

            .navbar-links a.active::after {
                display: none;
            }

            .navbar-cta {
                justify-content: center;
                margin-top: 8px;
            }

            .hero-title {
                font-size: 2rem;
            }
            .hero-desc {
                font-size: 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .btn {
                justify-content: center;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .tutorial-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero {
                padding: 100px 0 48px;
            }
            .hero-title {
                font-size: 1.7rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .tutorial-card-top {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .logo {
                font-size: 18px;
            }
            .logo .brand-dot {
                width: 10px;
                height: 10px;
            }
            .header-inner {
                height: 64px;
            }
            .navbar-links {
                top: 64px;
            }
        }

        /* ===== 工具类 ===== */
        .text-accent {
            color: var(--accent);
        }
        .text-gold {
            color: var(--gold);
        }
        .text-muted {
            color: var(--text-muted);
        }
        .text-dim {
            color: var(--text-dim);
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .mb-48 {
            margin-bottom: 48px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .gap-12 {
            gap: 12px;
        }
        .gap-16 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
        }
        .text-center {
            text-align: center;
        }

        /* 加载动画 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-fade-up {
            animation: fadeInUp 0.6s ease forwards;
        }

        .delay-100 {
            animation-delay: 0.1s;
        }
        .delay-200 {
            animation-delay: 0.2s;
        }
        .delay-300 {
            animation-delay: 0.3s;
        }
        .delay-400 {
            animation-delay: 0.4s;
        }