/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #7C3AED;
            --primary-light: #8B5CF6;
            --primary-dark: #5B21B6;
            --accent: #F59E0B;
            --accent-light: #FBBF24;
            --danger: #EF4444;
            --success: #10B981;
            --bg-dark: #0A0B1A;
            --bg-card: #13152A;
            --bg-surface: #1C1F3A;
            --bg-elevated: #252851;
            --text-primary: #FFFFFF;
            --text-secondary: #9CA3AF;
            --text-muted: #6B7280;
            --border-color: #2D2D4A;
            --border-light: #3D3D5C;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(124, 58, 237, 0.25);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-primary);
            background: var(--bg-dark);
            overflow-x: hidden;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-primary);
        }
        p {
            color: var(--text-secondary);
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 间距工具 ===== */
        .section-padding {
            padding: 80px 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 48px 0;
            }
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
            background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-title p {
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
            color: var(--text-secondary);
        }
        @media (max-width: 768px) {
            .section-title h2 {
                font-size: 1.5rem;
            }
            .section-title p {
                font-size: 0.95rem;
            }
        }

        /* ===== Header / Nav (SaaS 命令栏风格) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(10, 11, 26, 0.82);
            backdrop-filter: blur(20px) saturate(1.4);
            -webkit-backdrop-filter: blur(20px) saturate(1.4);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .site-logo i {
            color: var(--primary-light);
            font-size: 1.6rem;
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-logo:hover {
            color: var(--text-primary);
        }

        .nav-main {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-main a {
            position: relative;
            padding: 8px 18px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-main a:hover {
            color: var(--text-primary);
            background: var(--bg-surface);
        }
        .nav-main a.active {
            color: var(--text-primary);
            background: var(--bg-elevated);
        }
        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--primary-light);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg-surface);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            padding: 0 16px;
            height: 40px;
            min-width: 200px;
            transition: var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.2);
        }
        .header-search i {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-right: 10px;
        }
        .header-search input {
            flex: 1;
            background: transparent;
            font-size: 0.88rem;
            color: var(--text-primary);
            height: 100%;
        }
        .header-search input::placeholder {
            color: var(--text-muted);
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            font-size: 0.92rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 50px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            white-space: nowrap;
        }
        .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
            color: #fff;
        }
        .btn-cta:active {
            transform: translateY(0);
        }
        .btn-cta i {
            font-size: 0.85rem;
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: var(--bg-surface);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            cursor: pointer;
        }
        .menu-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: var(--transition);
        }

        @media (max-width: 768px) {
            .nav-main {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(10, 11, 26, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--border-color);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
            }
            .nav-main.open {
                display: flex;
            }
            .nav-main a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
            }
            .nav-main a.active::after {
                display: none;
            }
            .header-search {
                min-width: 140px;
                height: 36px;
                padding: 0 12px;
            }
            .header-search input {
                font-size: 0.82rem;
            }
            .btn-cta {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .btn-cta span {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .site-logo {
                font-size: 1.15rem;
            }
            .site-logo i {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 520px) {
            .header-search {
                min-width: 80px;
                width: 80px;
            }
            .header-search input {
                width: 40px;
            }
            .btn-cta {
                padding: 6px 12px;
                font-size: 0.78rem;
            }
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            padding-top: var(--header-height);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            filter: brightness(0.45) saturate(1.1);
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 11, 26, 0.7) 0%, rgba(10, 11, 26, 0.9) 80%, var(--bg-dark) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
            padding-top: 40px;
            padding-bottom: 60px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: rgba(124, 58, 237, 0.2);
            border: 1px solid rgba(124, 58, 237, 0.3);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--primary-light);
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            font-size: 0.75rem;
            color: var(--accent);
        }
        .hero h1 {
            font-size: 3.4rem;
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -1px;
            background: linear-gradient(135deg, #fff 40%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 640px;
            margin: 0 auto 32px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-actions .btn-cta {
            padding: 14px 36px;
            font-size: 1.05rem;
            box-shadow: var(--shadow-md);
        }
        .hero-actions .btn-cta i {
            font-size: 1rem;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: 1.5px solid var(--border-light);
            border-radius: 50px;
            transition: var(--transition);
        }
        .btn-outline:hover {
            border-color: var(--primary-light);
            background: rgba(124, 58, 237, 0.1);
            color: var(--text-primary);
        }
        .hero-stats {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 48px;
            margin-top: 48px;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
        }
        .hero-stat .num span {
            color: var(--accent);
        }
        .hero-stat .label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .hero {
                min-height: 70vh;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
                padding: 0 8px;
            }
            .hero-actions .btn-cta {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
            .btn-outline {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .hero-stats {
                gap: 24px;
                margin-top: 32px;
            }
            .hero-stat .num {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stat .num {
                font-size: 1.2rem;
            }
        }

        /* ===== 特色板块 ===== */
        .features {
            background: var(--bg-dark);
            position: relative;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-md);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            background: rgba(124, 58, 237, 0.15);
            color: var(--primary-light);
        }
        .feature-card:nth-child(2) .feature-icon {
            background: rgba(245, 158, 11, 0.15);
            color: var(--accent);
        }
        .feature-card:nth-child(3) .feature-icon {
            background: rgba(16, 185, 129, 0.15);
            color: var(--success);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .feature-card {
                padding: 28px 20px;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* ===== 分类入口 ===== */
        .categories {
            background: var(--bg-dark);
            position: relative;
        }
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            min-height: 260px;
            display: flex;
            align-items: flex-end;
        }
        .category-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-md);
        }
        .category-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
            filter: brightness(0.55);
        }
        .category-card:hover img {
            transform: scale(1.04);
            filter: brightness(0.7);
        }
        .category-overlay {
            position: relative;
            z-index: 2;
            padding: 28px 24px;
            width: 100%;
            background: linear-gradient(0deg, rgba(10, 11, 26, 0.9) 0%, transparent 100%);
        }
        .category-overlay h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .category-overlay p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }
        .category-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(124, 58, 237, 0.25);
            color: var(--primary-light);
            border: 1px solid rgba(124, 58, 237, 0.2);
        }
        .category-tag i {
            font-size: 0.65rem;
        }

        @media (max-width: 768px) {
            .categories-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .category-card {
                min-height: 200px;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .categories-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* ===== 最新资讯 (CMS 列表) ===== */
        .news {
            background: var(--bg-dark);
            position: relative;
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            display: flex;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .news-card:hover {
            transform: translateY(-3px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .news-card-img {
            width: 160px;
            min-height: 140px;
            flex-shrink: 0;
            overflow: hidden;
            background: var(--bg-surface);
        }
        .news-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .news-card:hover .news-card-img img {
            transform: scale(1.04);
        }
        .news-card-body {
            padding: 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .news-card-body .news-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--accent);
            background: rgba(245, 158, 11, 0.15);
            border: 1px solid rgba(245, 158, 11, 0.2);
            margin-bottom: 8px;
            width: fit-content;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .news-card-body h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-body p {
            font-size: 0.83rem;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 10px;
            line-height: 1.6;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        .news-meta i {
            margin-right: 4px;
            font-size: 0.7rem;
        }
        .no-data {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
            font-size: 1rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }

        @media (max-width: 768px) {
            .news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .news-card {
                flex-direction: column;
            }
            .news-card-img {
                width: 100%;
                height: 180px;
            }
            .news-card-body {
                padding: 16px;
            }
            .news-card-body h3 {
                font-size: 0.95rem;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .news-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 热度排行 ===== */
        .rankings {
            background: var(--bg-dark);
            position: relative;
        }
        .rankings-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        .ranking-list {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px;
        }
        .ranking-list h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .ranking-list h3 i {
            color: var(--accent);
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .ranking-item:last-child {
            border-bottom: none;
        }
        .ranking-item:hover {
            padding-left: 8px;
        }
        .ranking-num {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            font-weight: 700;
            background: var(--bg-surface);
            color: var(--text-secondary);
            flex-shrink: 0;
        }
        .ranking-item:nth-child(1) .ranking-num {
            background: rgba(245, 158, 11, 0.2);
            color: var(--accent);
        }
        .ranking-item:nth-child(2) .ranking-num {
            background: rgba(245, 158, 11, 0.15);
            color: var(--accent);
        }
        .ranking-item:nth-child(3) .ranking-num {
            background: rgba(245, 158, 11, 0.1);
            color: var(--accent);
        }
        .ranking-info {
            flex: 1;
            min-width: 0;
        }
        .ranking-info .name {
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-primary);
            display: block;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .ranking-info .desc {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 2px;
        }
        .ranking-hot {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--danger);
            flex-shrink: 0;
        }
        .ranking-hot i {
            font-size: 0.7rem;
        }
        .ranking-progress {
            width: 60px;
            height: 4px;
            background: var(--bg-surface);
            border-radius: 4px;
            overflow: hidden;
            flex-shrink: 0;
        }
        .ranking-progress .bar {
            height: 100%;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .ranking-featured {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
        }
        .ranking-featured:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-light);
        }
        .ranking-featured img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }
        .ranking-featured .featured-body {
            padding: 24px;
        }
        .ranking-featured .featured-body .hot-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.72rem;
            font-weight: 600;
            background: rgba(239, 68, 68, 0.15);
            color: var(--danger);
            border: 1px solid rgba(239, 68, 68, 0.2);
            margin-bottom: 10px;
        }
        .ranking-featured .featured-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .ranking-featured .featured-body p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        .ranking-featured .featured-body .btn-cta {
            padding: 10px 24px;
            font-size: 0.88rem;
        }

        @media (max-width: 768px) {
            .rankings-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .ranking-list {
                padding: 18px;
            }
            .ranking-featured img {
                height: 160px;
            }
            .ranking-featured .featured-body {
                padding: 18px;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .rankings-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        /* ===== 流程步骤 ===== */
        .steps {
            background: var(--bg-dark);
            position: relative;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
            opacity: 0.25;
            z-index: 0;
        }
        .step-card {
            position: relative;
            z-index: 1;
            text-align: center;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px 20px 24px;
            transition: var(--transition);
        }
        .step-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            margin: 0 auto 16px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 0 20px rgba(124, 58, 237, 0.25);
        }
        .step-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.84rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .steps-grid::before {
                display: none;
            }
            .step-card {
                padding: 24px 16px 20px;
            }
        }
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* ===== FAQ ===== */
        .faq {
            background: var(--bg-dark);
            position: relative;
        }
        .faq-list {
            max-width: 740px;
            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-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            transition: var(--transition);
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-question i {
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary-light);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 24px;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .faq-question {
                padding: 14px 18px;
                font-size: 0.9rem;
            }
            .faq-answer {
                padding: 0 18px;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta {
            position: relative;
            padding: 80px 0;
            overflow: hidden;
        }
        .cta-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            filter: brightness(0.3) saturate(0.8);
            z-index: 0;
        }
        .cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.25) 0%, rgba(10, 11, 26, 0.85) 100%);
            z-index: 1;
        }
        .cta .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: #fff;
        }
        .cta p {
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 32px;
            color: rgba(255, 255, 255, 0.7);
        }
        .cta .btn-cta {
            padding: 16px 40px;
            font-size: 1.1rem;
            box-shadow: var(--shadow-lg);
        }
        .cta .btn-cta i {
            font-size: 1.05rem;
        }

        @media (max-width: 768px) {
            .cta {
                padding: 48px 0;
            }
            .cta h2 {
                font-size: 1.5rem;
            }
            .cta p {
                font-size: 0.92rem;
            }
            .cta .btn-cta {
                padding: 14px 32px;
                font-size: 1rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .site-logo {
            font-size: 1.2rem;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            max-width: 280px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .footer-bottom-links {
            display: flex;
            gap: 20px;
        }
        .footer-bottom-links a {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .footer-bottom-links a:hover {
            color: var(--primary-light);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .site-footer {
                padding: 32px 0 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ===== 滚动动画 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== 分隔线装饰 ===== */
        .section-divider {
            text-align: center;
            padding: 12px 0 0;
            font-size: 0.75rem;
            color: var(--text-muted);
            letter-spacing: 4px;
            text-transform: uppercase;
            opacity: 0.4;
        }
        .section-divider i {
            margin: 0 8px;
        }

        /* ===== 按钮通用 ===== */
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 50px;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .btn-ghost:hover {
            color: var(--text-primary);
            background: var(--bg-surface);
            border-color: var(--border-color);
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 520px) {
            .section-title h2 {
                font-size: 1.3rem;
            }
            .hero h1 {
                font-size: 1.4rem;
            }
            .hero p {
                font-size: 0.85rem;
            }
            .feature-card h3 {
                font-size: 1.05rem;
            }
            .ranking-list h3 {
                font-size: 1rem;
            }
            .ranking-item {
                padding: 10px 0;
                gap: 10px;
            }
            .ranking-info .name {
                font-size: 0.82rem;
            }
            .cta h2 {
                font-size: 1.25rem;
            }
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--bg-elevated);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--border-light);
        }

        /* ===== 选中样式 ===== */
        ::selection {
            background: rgba(124, 58, 237, 0.3);
            color: #fff;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e85d2c;
            --primary-dark: #c94d1f;
            --primary-light: #f58a5c;
            --accent: #f0a500;
            --accent-dark: #d48f00;
            --bg-body: #0f0e13;
            --bg-card: #1a1820;
            --bg-card-hover: #211f2a;
            --bg-section: #141218;
            --bg-section-alt: #1a1822;
            --text-main: #f0ede8;
            --text-secondary: #b0aba0;
            --text-weak: #787468;
            --border-color: #2d2935;
            --border-light: #3d3945;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-main);
            background: var(--bg-body);
            min-height: 100vh;
            padding-top: var(--header-height);
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

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

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-main);
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-narrow {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 按钮系统 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.2;
            transition: all var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
            background: transparent;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(232, 93, 44, 0.35);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            box-shadow: 0 6px 24px rgba(232, 93, 44, 0.5);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(232, 93, 44, 0.3);
        }
        .btn-outline {
            color: var(--text-main);
            border-color: var(--border-light);
            background: transparent;
        }
        .btn-outline:hover {
            border-color: var(--primary-light);
            color: var(--primary-light);
            background: rgba(232, 93, 44, 0.08);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-ghost {
            color: var(--text-secondary);
            border-color: transparent;
        }
        .btn-ghost:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.05);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
            border-radius: 40px;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 17px;
        }

        /* ===== 标签 / 徽章 ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            background: rgba(232, 93, 44, 0.15);
            color: var(--primary-light);
            border: 1px solid rgba(232, 93, 44, 0.2);
        }
        .badge-accent {
            background: rgba(240, 165, 0, 0.15);
            color: var(--accent);
            border-color: rgba(240, 165, 0, 0.2);
        }
        .badge-neutral {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-secondary);
            border-color: rgba(255, 255, 255, 0.08);
        }
        .badge-hot {
            background: rgba(255, 60, 60, 0.18);
            color: #ff6b6b;
            border-color: rgba(255, 60, 60, 0.25);
        }
        .badge-sm {
            padding: 2px 10px;
            font-size: 11px;
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 24px;
            transition: all var(--transition);
        }
        .card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-image {
            border-radius: var(--radius-md) var(--radius-md) 0 0;
            overflow: hidden;
            margin: -24px -24px 16px -24px;
            aspect-ratio: 16/9;
            background: #1e1b26;
        }
        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.4s ease;
        }
        .card:hover .card-image img {
            transform: scale(1.04);
        }
        .card-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .card-title a {
            color: var(--text-main);
        }
        .card-title a:hover {
            color: var(--primary-light);
        }
        .card-desc {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-weak);
            padding-top: 12px;
            border-top: 1px solid var(--border-color);
        }
        .card-meta i {
            margin-right: 4px;
            font-size: 12px;
        }
        .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 10px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(15, 14, 19, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-main) !important;
            letter-spacing: -0.3px;
        }
        .site-logo i {
            color: var(--primary);
            font-size: 26px;
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--text-main), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-logo:hover span {
            -webkit-text-fill-color: var(--primary-light);
        }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-main a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
        }
        .nav-main a:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-main a.active {
            color: #fff;
            background: rgba(232, 93, 44, 0.2);
            border: 1px solid rgba(232, 93, 44, 0.25);
        }
        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-toggle {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 18px;
            transition: all var(--transition);
            background: transparent;
        }
        .search-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-main);
        }
        .mobile-menu-btn {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 20px;
            background: transparent;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .mobile-menu-btn:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-main);
        }

        /* ===== 移动端导航抽屉 ===== */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 14, 19, 0.98);
            backdrop-filter: blur(20px);
            z-index: 999;
            padding: 32px 24px;
            flex-direction: column;
            gap: 12px;
            overflow-y: auto;
            border-top: 1px solid var(--border-color);
        }
        .mobile-drawer.open {
            display: flex;
        }
        .mobile-drawer a {
            display: block;
            padding: 14px 20px;
            border-radius: var(--radius-md);
            font-size: 17px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .mobile-drawer a:hover {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-main);
        }
        .mobile-drawer a.active {
            color: #fff;
            background: rgba(232, 93, 44, 0.15);
            border-color: rgba(232, 93, 44, 0.2);
        }
        .mobile-drawer .btn {
            margin-top: 8px;
            width: 100%;
            justify-content: center;
        }

        /* ===== 英雄区 / Banner ===== */
        .page-banner {
            padding: 80px 0 60px;
            background: var(--bg-section);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .page-banner .container {
            position: relative;
            z-index: 1;
        }
        .banner-content {
            max-width: 700px;
        }
        .banner-content .badge {
            margin-bottom: 16px;
        }
        .banner-content h1 {
            font-size: 42px;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #fff, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .banner-content p {
            font-size: 18px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 24px;
            max-width: 580px;
        }
        .banner-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 17px;
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-header .badge {
            margin-bottom: 12px;
        }
        .section-header.left {
            text-align: left;
        }
        .section-header.left p {
            margin: 0;
        }

        /* ===== 网格 ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 20px;
        }

        /* ===== 图文列表 ===== */
        .list-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 20px;
            transition: all var(--transition);
            align-items: flex-start;
        }
        .list-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }
        .list-card .list-index {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(232, 93, 44, 0.12);
            color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
        }
        .list-card .list-body {
            flex: 1;
            min-width: 0;
        }
        .list-card .list-body h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .list-card .list-body h4 a {
            color: var(--text-main);
        }
        .list-card .list-body h4 a:hover {
            color: var(--primary-light);
        }
        .list-card .list-body p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.5;
        }
        .list-card .list-meta {
            font-size: 13px;
            color: var(--text-weak);
            margin-top: 6px;
            display: flex;
            gap: 16px;
        }

        /* ===== 统计数字 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .stat-item:hover {
            border-color: var(--border-light);
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 36px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-label {
            color: var(--text-secondary);
            font-size: 15px;
            margin-top: 6px;
        }

        /* ===== 步骤 / 流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            border: 1px solid var(--border-color);
            text-align: center;
            position: relative;
            transition: all var(--transition);
        }
        .step-card:hover {
            border-color: var(--border-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .step-card::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 800;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(232, 93, 44, 0.3);
        }
        .step-card .step-icon {
            font-size: 36px;
            color: var(--primary-light);
            margin-bottom: 16px;
            margin-top: 8px;
        }
        .step-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-card p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-question {
            width: 100%;
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            text-align: left;
            background: transparent;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .faq-question i {
            color: var(--text-weak);
            font-size: 14px;
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary-light);
        }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--bg-section);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: var(--text-secondary);
            font-size: 18px;
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0c0b10;
            border-top: 1px solid var(--border-color);
            padding: 56px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .site-logo {
            margin-bottom: 14px;
            display: inline-flex;
        }
        .footer-brand p {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: var(--text-weak);
            font-size: 14px;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
            transform: translateX(4px);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            font-size: 13px;
            color: var(--text-weak);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom-links {
            display: flex;
            gap: 20px;
        }
        .footer-bottom-links a {
            color: var(--text-weak);
            font-size: 13px;
        }
        .footer-bottom-links a:hover {
            color: var(--text-secondary);
        }

        /* ===== 分隔线 ===== */
        .divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
            margin: 0 auto 20px;
        }
        .divider.left {
            margin: 0 0 20px 0;
        }

        /* ===== 分类页面额外样式 ===== */
        .subcategory-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            gap: 12px;
        }
        .subcategory-tag {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: all var(--transition);
        }
        .subcategory-tag:hover {
            background: var(--bg-card-hover);
            border-color: var(--primary);
            color: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .subcategory-tag i {
            font-size: 16px;
        }
        .subcategory-tag .count {
            background: rgba(255, 255, 255, 0.06);
            padding: 0 8px;
            border-radius: 20px;
            font-size: 11px;
            color: var(--text-weak);
        }

        /* ===== 热门攻略排行 ===== */
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .rank-item:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            transform: translateX(6px);
        }
        .rank-number {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            color: var(--text-weak);
        }
        .rank-item:nth-child(1) .rank-number {
            background: rgba(232, 93, 44, 0.2);
            color: var(--primary-light);
        }
        .rank-item:nth-child(2) .rank-number {
            background: rgba(240, 165, 0, 0.2);
            color: var(--accent);
        }
        .rank-item:nth-child(3) .rank-number {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-secondary);
        }
        .rank-info {
            flex: 1;
            min-width: 0;
        }
        .rank-info h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 2px;
        }
        .rank-info h4 a {
            color: var(--text-main);
        }
        .rank-info h4 a:hover {
            color: var(--primary-light);
        }
        .rank-info p {
            font-size: 13px;
            color: var(--text-weak);
        }
        .rank-hot {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-weak);
        }
        .rank-hot i {
            color: #ff6b6b;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .banner-content h1 {
                font-size: 34px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .nav-main {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .search-toggle {
                display: none;
            }
            .nav-right .btn {
                display: none;
            }
            .page-banner {
                padding: 60px 0 40px;
            }
            .banner-content h1 {
                font-size: 28px;
            }
            .banner-content p {
                font-size: 16px;
            }
            .section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-number {
                font-size: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom-links {
                justify-content: center;
            }
            .cta-section h2 {
                font-size: 28px;
            }
            .cta-section p {
                font-size: 16px;
            }
            .list-card {
                flex-direction: column;
                align-items: stretch;
            }
            .list-card .list-index {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }
            .subcategory-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .rank-item {
                flex-wrap: wrap;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .banner-content h1 {
                font-size: 24px;
            }
            .banner-actions {
                flex-direction: column;
                width: 100%;
            }
            .banner-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-number {
                font-size: 24px;
            }
            .subcategory-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .subcategory-tag {
                padding: 10px 12px;
                font-size: 13px;
            }
            .card {
                padding: 16px;
            }
            .card-image {
                margin: -16px -16px 12px -16px;
            }
            .footer-grid {
                gap: 20px;
            }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
:root {
  --primary: #7C3AED;
  --primary-dark: #5B21B6;
  --primary-light: #A78BFA;
  --accent: #D4AF37;
  --accent-light: #FBBF24;
  --accent-dark: #B8860B;
  --bg-dark: #0B0B1A;
  --bg-card: #16162A;
  --bg-section: #111127;
  --bg-elevated: #1E1E3A;
  --text-primary: #F5F5F7;
  --text-secondary: #C4C4D0;
  --text-muted: #7C7C8A;
  --border-color: #2D2D44;
  --border-light: #3D3D5C;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 40px rgba(124,58,237,0.15);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --max-width: 1200px;
  --nav-height: 72px;
}
/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif; background: var(--bg-dark); color: var(--text-primary); line-height: 1.7; font-size: 16px; -webkit-font-smoothing: antialiased; }
a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-light); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
/* ===== Container ===== */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; width: 100%; }
/* ===== Header / Nav ===== */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(11,11,26,0.92); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); border-bottom: 1px solid var(--border-color); height: var(--nav-height); display: flex; align-items: center; }
.site-header .container { display: flex; align-items: center; justify-content: space-between; }
.site-logo { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 800; color: var(--text-primary); letter-spacing: 0.5px; }
.site-logo i { color: var(--accent); font-size: 26px; }
.site-logo span { background: linear-gradient(135deg, var(--accent-light), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.site-logo:hover span { background: linear-gradient(135deg, var(--primary-light), var(--accent-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-main { display: flex; align-items: center; gap: 8px; }
.nav-main a { padding: 8px 20px; border-radius: var(--radius-sm); color: var(--text-secondary); font-weight: 500; font-size: 15px; transition: var(--transition); position: relative; }
.nav-main a:hover { color: var(--text-primary); background: rgba(124,58,237,0.12); }
.nav-main a.active { color: var(--text-primary); background: rgba(124,58,237,0.2); }
.nav-main a.active::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 24px; height: 3px; background: var(--accent); border-radius: 2px; }
.nav-actions { display: flex; align-items: center; gap: 14px; }
.nav-search { display: flex; align-items: center; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 100px; padding: 6px 16px; gap: 8px; transition: var(--transition); }
.nav-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(124,58,237,0.2); }
.nav-search i { color: var(--text-muted); font-size: 14px; }
.nav-search input { background: transparent; border: none; color: var(--text-primary); font-size: 14px; width: 160px; padding: 4px 0; }
.nav-search input::placeholder { color: var(--text-muted); }
.nav-cta { display: inline-flex; align-items: center; gap: 8px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; padding: 10px 24px; border-radius: 100px; font-weight: 600; font-size: 14px; transition: var(--transition); box-shadow: 0 4px 16px rgba(124,58,237,0.3); }
.nav-cta:hover { background: linear-gradient(135deg, var(--primary-light), var(--primary)); color: #fff; transform: translateY(-1px); box-shadow: 0 6px 24px rgba(124,58,237,0.4); }
.mobile-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; background: none; border: none; }
.mobile-toggle span { width: 26px; height: 2.5px; background: var(--text-primary); border-radius: 2px; transition: var(--transition); }
/* ===== Hero / Article Banner ===== */
.article-hero { position: relative; padding: 100px 0 80px; background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat; isolation: isolate; }
.article-hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(11,11,26,0.92) 0%, rgba(11,11,26,0.7) 50%, rgba(124,58,237,0.25) 100%); z-index: 1; }
.article-hero::after { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat; opacity: 0.08; z-index: 0; }
.article-hero .container { position: relative; z-index: 2; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-muted); margin-bottom: 24px; flex-wrap: wrap; }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb span { color: var(--text-secondary); }
.breadcrumb .sep { color: var(--text-muted); font-size: 12px; }
.article-hero .post-category { display: inline-block; background: rgba(212,175,55,0.18); color: var(--accent-light); padding: 4px 16px; border-radius: 100px; font-size: 13px; font-weight: 600; margin-bottom: 16px; border: 1px solid rgba(212,175,55,0.25); }
.article-hero h1 { font-size: clamp(28px, 4vw, 48px); font-weight: 800; line-height: 1.25; margin-bottom: 20px; max-width: 900px; }
.article-hero .meta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 20px; color: var(--text-secondary); font-size: 14px; }
.article-hero .meta-row i { margin-right: 6px; color: var(--accent); }
/* ===== Main Content Area ===== */
.article-main { padding: 60px 0 80px; background: var(--bg-dark); }
.article-main .content-grid { display: grid; grid-template-columns: 1fr 340px; gap: 48px; align-items: start; }
.article-body { background: var(--bg-card); border-radius: var(--radius-lg); padding: 40px 44px; border: 1px solid var(--border-color); box-shadow: var(--shadow); }
.article-body .post-content { font-size: 17px; line-height: 1.85; color: var(--text-secondary); }
.article-body .post-content p { margin-bottom: 1.6em; }
.article-body .post-content h2, .article-body .post-content h3 { color: var(--text-primary); margin-top: 1.8em; margin-bottom: 0.8em; }
.article-body .post-content h2 { font-size: 26px; border-left: 4px solid var(--accent); padding-left: 16px; }
.article-body .post-content h3 { font-size: 22px; }
.article-body .post-content ul, .article-body .post-content ol { margin-bottom: 1.6em; padding-left: 24px; }
.article-body .post-content li { margin-bottom: 0.5em; list-style: disc; }
.article-body .post-content a { color: var(--accent-light); text-decoration: underline; text-underline-offset: 3px; }
.article-body .post-content a:hover { color: var(--accent); }
.article-body .post-content img { border-radius: var(--radius); margin: 24px 0; box-shadow: var(--shadow); }
.article-body .post-content blockquote { border-left: 4px solid var(--primary); background: rgba(124,58,237,0.08); padding: 16px 24px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 24px 0; color: var(--text-secondary); }
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--border-color); }
.article-tags .tag { display: inline-block; background: rgba(124,58,237,0.12); color: var(--primary-light); padding: 5px 16px; border-radius: 100px; font-size: 13px; font-weight: 500; border: 1px solid rgba(124,58,237,0.2); transition: var(--transition); }
.article-tags .tag:hover { background: rgba(124,58,237,0.22); color: var(--text-primary); }
.article-share { display: flex; align-items: center; gap: 12px; margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--border-color); }
.article-share span { font-size: 14px; color: var(--text-muted); }
.article-share a { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 50%; background: var(--bg-elevated); color: var(--text-secondary); border: 1px solid var(--border-color); transition: var(--transition); }
.article-share a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); }
/* ===== Sidebar ===== */
.sidebar { display: flex; flex-direction: column; gap: 32px; }
.sidebar-card { background: var(--bg-card); border-radius: var(--radius-lg); padding: 28px; border: 1px solid var(--border-color); box-shadow: var(--shadow); }
.sidebar-card h3 { font-size: 18px; margin-bottom: 20px; display: flex; align-items: center; gap: 10px; }
.sidebar-card h3 i { color: var(--accent); }
.sidebar-card .cat-list li { border-bottom: 1px solid var(--border-color); }
.sidebar-card .cat-list li:last-child { border-bottom: none; }
.sidebar-card .cat-list a { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; color: var(--text-secondary); font-size: 15px; transition: var(--transition); }
.sidebar-card .cat-list a:hover { color: var(--accent-light); padding-left: 6px; }
.sidebar-card .cat-list a span { background: var(--bg-elevated); padding: 2px 12px; border-radius: 100px; font-size: 12px; color: var(--text-muted); }
.sidebar-card .hot-list li { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--border-color); align-items: flex-start; }
.sidebar-card .hot-list li:last-child { border-bottom: none; padding-bottom: 0; }
.sidebar-card .hot-list li:first-child { padding-top: 0; }
.sidebar-card .hot-list .rank { width: 26px; height: 26px; border-radius: 6px; background: var(--bg-elevated); display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; color: var(--text-muted); flex-shrink: 0; }
.sidebar-card .hot-list .rank.top { background: linear-gradient(135deg, var(--accent), var(--accent-dark)); color: #fff; }
.sidebar-card .hot-list .hot-info { flex: 1; min-width: 0; }
.sidebar-card .hot-list .hot-info a { font-size: 14px; color: var(--text-primary); font-weight: 500; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.sidebar-card .hot-list .hot-info a:hover { color: var(--accent-light); }
.sidebar-card .hot-list .hot-info .hot-meta { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.sidebar-card .hot-list .hot-img { width: 64px; height: 48px; border-radius: 6px; object-fit: cover; flex-shrink: 0; }
.sidebar-card .tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.sidebar-card .tag-cloud a { display: inline-block; background: var(--bg-elevated); color: var(--text-secondary); padding: 6px 14px; border-radius: 100px; font-size: 13px; border: 1px solid var(--border-color); transition: var(--transition); }
.sidebar-card .tag-cloud a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.sidebar-cta { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); border-radius: var(--radius-lg); padding: 32px 28px; text-align: center; border: 1px solid rgba(124,58,237,0.3); box-shadow: var(--shadow-glow); }
.sidebar-cta h4 { font-size: 20px; margin-bottom: 10px; color: #fff; }
.sidebar-cta p { font-size: 14px; color: rgba(255,255,255,0.7); margin-bottom: 20px; }
.sidebar-cta a { display: inline-flex; align-items: center; gap: 8px; background: #fff; color: var(--primary-dark); padding: 12px 28px; border-radius: 100px; font-weight: 700; font-size: 15px; transition: var(--transition); }
.sidebar-cta a:hover { background: var(--accent-light); color: var(--bg-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.3); }
/* ===== Post Navigation ===== */
.post-nav { padding: 40px 0; background: var(--bg-section); }
.post-nav .nav-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.post-nav .nav-item { background: var(--bg-card); border-radius: var(--radius); padding: 24px; border: 1px solid var(--border-color); transition: var(--transition); display: flex; flex-direction: column; }
.post-nav .nav-item:hover { border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-2px); }
.post-nav .nav-item .label { font-size: 13px; color: var(--text-muted); margin-bottom: 6px; display: flex; align-items: center; gap: 6px; }
.post-nav .nav-item .title { font-size: 16px; font-weight: 600; color: var(--text-primary); line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post-nav .nav-item:hover .title { color: var(--accent-light); }
.post-nav .nav-item.next { text-align: right; }
.post-nav .nav-item.next .label { justify-content: flex-end; }
/* ===== Related Posts ===== */
.related-section { padding: 60px 0; background: var(--bg-dark); }
.related-section .section-title { text-align: center; font-size: 28px; margin-bottom: 12px; }
.related-section .section-sub { text-align: center; color: var(--text-muted); margin-bottom: 40px; font-size: 15px; }
.related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.related-card { background: var(--bg-card); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border-color); transition: var(--transition); }
.related-card:hover { transform: translateY(-6px); border-color: var(--primary); box-shadow: var(--shadow-lg); }
.related-card .card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.related-card .card-body { padding: 18px 20px 20px; }
.related-card .card-body .card-cat { font-size: 12px; color: var(--accent-light); font-weight: 600; margin-bottom: 6px; }
.related-card .card-body h4 { font-size: 16px; font-weight: 600; line-height: 1.4; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card .card-body h4 a { color: var(--text-primary); }
.related-card .card-body h4 a:hover { color: var(--accent-light); }
.related-card .card-body .card-meta { font-size: 13px; color: var(--text-muted); display: flex; align-items: center; gap: 12px; }
/* ===== CTA Section ===== */
.cta-section { padding: 80px 0; background: var(--bg-section); position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat; opacity: 0.06; }
.cta-section .container { position: relative; z-index: 1; text-align: center; }
.cta-section h2 { font-size: clamp(26px, 3.5vw, 40px); margin-bottom: 16px; }
.cta-section p { color: var(--text-secondary); font-size: 17px; max-width: 600px; margin: 0 auto 32px; }
.cta-section .cta-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta-section .btn-primary { display: inline-flex; align-items: center; gap: 10px; background: linear-gradient(135deg, var(--accent), var(--accent-dark)); color: var(--bg-dark); padding: 16px 40px; border-radius: 100px; font-weight: 700; font-size: 16px; transition: var(--transition); box-shadow: 0 4px 24px rgba(212,175,55,0.3); }
.cta-section .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 32px rgba(212,175,55,0.4); color: var(--bg-dark); }
.cta-section .btn-secondary { display: inline-flex; align-items: center; gap: 10px; background: transparent; color: var(--text-primary); padding: 16px 40px; border-radius: 100px; font-weight: 600; font-size: 16px; border: 1.5px solid var(--border-color); transition: var(--transition); }
.cta-section .btn-secondary:hover { border-color: var(--primary); color: var(--primary-light); }
/* ===== Footer ===== */
.site-footer { background: var(--bg-card); border-top: 1px solid var(--border-color); padding: 60px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .site-logo { margin-bottom: 16px; font-size: 20px; }
.footer-brand p { font-size: 14px; color: var(--text-muted); line-height: 1.7; max-width: 360px; }
.footer-col h4 { font-size: 16px; margin-bottom: 16px; color: var(--text-primary); }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: var(--text-muted); font-size: 14px; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--accent-light); padding-left: 4px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; padding-top: 24px; border-top: 1px solid var(--border-color); }
.footer-bottom p { font-size: 14px; color: var(--text-muted); }
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { font-size: 13px; color: var(--text-muted); }
.footer-bottom-links a:hover { color: var(--accent-light); }
/* ===== Not Found ===== */
.not-found { text-align: center; padding: 80px 20px; }
.not-found i { font-size: 64px; color: var(--text-muted); margin-bottom: 24px; }
.not-found h2 { font-size: 28px; margin-bottom: 12px; }
.not-found p { color: var(--text-muted); margin-bottom: 24px; font-size: 16px; }
.not-found a { display: inline-flex; align-items: center; gap: 8px; background: var(--primary); color: #fff; padding: 14px 32px; border-radius: 100px; font-weight: 600; transition: var(--transition); }
.not-found a:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); }
/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .article-main .content-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-main { display: none; }
  .nav-main.open { display: flex; flex-direction: column; position: absolute; top: var(--nav-height); left: 0; right: 0; background: rgba(11,11,26,0.98); backdrop-filter: blur(18px); padding: 16px 24px 24px; border-bottom: 1px solid var(--border-color); gap: 4px; }
  .mobile-toggle { display: flex; }
  .nav-search { display: none; }
  .nav-actions .nav-cta { padding: 10px 18px; font-size: 13px; }
  .article-hero { padding: 60px 0 50px; }
  .article-hero h1 { font-size: 24px; }
  .article-body { padding: 24px 20px; }
  .article-body .post-content { font-size: 16px; }
  .post-nav .nav-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .sidebar-card .hot-list .hot-img { width: 50px; height: 38px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .article-hero h1 { font-size: 20px; }
  .article-hero .meta-row { gap: 12px; font-size: 13px; }
  .article-body { padding: 18px 16px; border-radius: var(--radius); }
  .related-card .card-body { padding: 14px 16px; }
  .cta-section { padding: 50px 0; }
  .cta-section .btn-primary, .cta-section .btn-secondary { padding: 14px 28px; font-size: 15px; width: 100%; justify-content: center; }
  .sidebar-card { padding: 20px; }
}