/* roulang page: index */
:root {
            --primary: #f0b90b;
            --primary-dark: #d4a108;
            --primary-light: #ffe066;
            --dark-bg: #0b0f19;
            --dark-bg-2: #0e1420;
            --card-bg: #151d2e;
            --card-bg-hover: #1a2338;
            --card-border: rgba(255, 255, 255, 0.07);
            --text-main: #e8ecf1;
            --text-muted: #93a0b4;
            --text-light: #ffffff;
            --success: #22c55e;
            --info: #38bdf8;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.5);
            --transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --spacing-section: 90px;
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            background-color: var(--dark-bg);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1280px;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }
        .section-head {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-head .section-tag {
            display: inline-block;
            background: rgba(240, 185, 11, 0.12);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            padding: 6px 18px;
            border-radius: 50px;
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-light);
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }
        .section-head p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto;
        }
        .btn {
            border-radius: 50px;
            font-weight: 600;
            padding: 12px 28px;
            transition: var(--transition);
            letter-spacing: 0.3px;
        }
        .btn-primary-custom {
            background: var(--primary);
            color: #0b0f19;
            border: 2px solid var(--primary);
        }
        .btn-primary-custom:hover {
            background: var(--primary-light);
            border-color: var(--primary-light);
            color: #0b0f19;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(240, 185, 11, 0.25);
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--text-light);
            border: 2px solid rgba(255, 255, 255, 0.5);
        }
        .btn-outline-custom:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .badge-custom {
            background: rgba(240, 185, 11, 0.15);
            color: var(--primary);
            font-weight: 600;
            font-size: 12px;
            padding: 5px 12px;
            border-radius: 50px;
        }
        /* ===== Navigation ===== */
        .navbar {
            background: rgba(11, 15, 25, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 14px 0;
            z-index: 1000;
        }
        .navbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .navbar-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-light) !important;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .navbar-brand .brand-highlight {
            color: var(--primary);
        }
        .navbar-brand:hover {
            color: var(--primary) !important;
        }
        .navbar-nav {
            gap: 4px;
            align-items: center;
        }
        .navbar-nav .nav-link {
            color: var(--text-muted) !important;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 18px !important;
            border-radius: 50px;
            transition: var(--transition);
            position: relative;
        }
        .navbar-nav .nav-link:hover {
            color: var(--text-light) !important;
            background: rgba(255, 255, 255, 0.05);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary) !important;
            background: rgba(240, 185, 11, 0.1);
        }
        .navbar-toggler {
            border-color: rgba(255, 255, 255, 0.2);
            box-shadow: none !important;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(240, 185, 11, 0.3) !important;
        }
        /* ===== Hero ===== */
        .hero-section {
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(11, 15, 25, 0.92) 0%, rgba(11, 15, 25, 0.75) 60%, rgba(11, 15, 25, 0.5) 100%),
                url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            position: relative;
            padding: 140px 0 100px;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--dark-bg), transparent);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240, 185, 11, 0.12);
            border: 1px solid rgba(240, 185, 11, 0.25);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 7px 20px;
            border-radius: 50px;
            margin-bottom: 28px;
            letter-spacing: 1px;
        }
        .hero-badge i {
            font-size: 14px;
        }
        .hero-title {
            font-size: 4rem;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -1.5px;
            line-height: 1.15;
            margin-bottom: 10px;
        }
        .hero-title .highlight {
            color: var(--primary);
            position: relative;
        }
        .hero-subtitle {
            font-size: 1.35rem;
            color: var(--text-muted);
            max-width: 620px;
            margin-bottom: 36px;
            line-height: 1.6;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 60px;
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-stat-item .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.2;
        }
        .hero-stat-item .stat-num i {
            font-size: 1.2rem;
            color: var(--primary);
            margin-right: 4px;
        }
        .hero-stat-item .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        /* ===== Stats Section ===== */
        .stats-section {
            padding: 70px 0;
            background: var(--dark-bg-2);
            border-top: 1px solid var(--card-border);
            border-bottom: 1px solid var(--card-border);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }
        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 30px 24px;
            text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(240, 185, 11, 0.3);
        }
        .stat-card .stat-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(240, 185, 11, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 22px;
            color: var(--primary);
        }
        .stat-card .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-card .stat-label {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        /* ===== About ===== */
        .about-section {
            background: var(--dark-bg);
        }
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .about-image {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .about-image img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .about-image:hover img {
            transform: scale(1.03);
        }
        .about-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 15, 25, 0.4), transparent);
        }
        .about-badge {
            position: absolute;
            bottom: 20px;
            left: 20px;
            z-index: 2;
            background: rgba(240, 185, 11, 0.92);
            color: #0b0f19;
            font-weight: 700;
            padding: 10px 18px;
            border-radius: 50px;
            font-size: 14px;
        }
        .about-content .section-tag {
            display: inline-block;
            background: rgba(240, 185, 11, 0.12);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            padding: 6px 18px;
            border-radius: 50px;
            margin-bottom: 16px;
        }
        .about-content h2 {
            font-size: 2.1rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 18px;
            line-height: 1.3;
        }
        .about-content p {
            color: var(--text-muted);
            margin-bottom: 16px;
            font-size: 1rem;
        }
        .about-list {
            list-style: none;
            margin: 24px 0 0;
            padding: 0;
        }
        .about-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            color: var(--text-main);
            font-size: 0.98rem;
        }
        .about-list li i {
            color: var(--primary);
            font-size: 18px;
            margin-top: 2px;
        }
        /* ===== Categories ===== */
        .categories-section {
            background: linear-gradient(180deg, var(--dark-bg) 0%, var(--dark-bg-2) 100%);
        }
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .category-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            position: relative;
        }
        .category-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(240, 185, 11, 0.3);
        }
        .category-card .card-cover {
            position: relative;
            overflow: hidden;
            height: 180px;
        }
        .category-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.7s ease;
        }
        .category-card:hover .card-cover img {
            transform: scale(1.08);
        }
        .category-card .card-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, var(--card-bg) 0%, transparent 60%);
        }
        .category-card .card-icon {
            position: absolute;
            bottom: -24px;
            right: 20px;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #0b0f19;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            box-shadow: 0 8px 20px rgba(240, 185, 11, 0.3);
            z-index: 2;
        }
        .category-card .card-body {
            padding: 30px 26px 26px;
        }
        .category-card .card-body h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 8px;
        }
        .category-card .card-body p {
            color: var(--text-muted);
            font-size: 0.92rem;
            margin-bottom: 18px;
            line-height: 1.6;
        }
        .category-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
        }
        .category-card .card-link i {
            transition: transform 0.3s ease;
        }
        .category-card .card-link:hover i {
            transform: translateX(4px);
        }
        /* ===== News Section ===== */
        .news-section {
            background: var(--dark-bg);
        }
        .news-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 36px;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: 18px;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 18px 22px;
            transition: var(--transition);
        }
        .news-item:hover {
            background: var(--card-bg-hover);
            border-color: rgba(240, 185, 11, 0.25);
            transform: translateX(4px);
            box-shadow: var(--shadow-card);
        }
        .news-item .news-tag {
            flex-shrink: 0;
            background: rgba(240, 185, 11, 0.12);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            min-width: 64px;
            text-align: center;
        }
        .news-item .news-title {
            flex: 1;
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .news-item:hover .news-title {
            color: var(--primary);
        }
        .news-item .news-date {
            flex-shrink: 0;
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .news-empty {
            text-align: center;
            padding: 60px 20px;
            background: var(--card-bg);
            border-radius: var(--radius-md);
            color: var(--text-muted);
        }
        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 26px;
        }
        .sidebar-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 18px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--card-border);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4 i {
            color: var(--primary);
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-cloud a {
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-muted);
            font-size: 0.84rem;
            padding: 5px 14px;
            border-radius: 50px;
            transition: var(--transition);
        }
        .tag-cloud a:hover {
            background: rgba(240, 185, 11, 0.15);
            color: var(--primary);
        }
        .sidebar-featured {
            display: flex;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid var(--card-border);
            align-items: center;
        }
        .sidebar-featured:last-child {
            border-bottom: none;
        }
        .sidebar-featured img {
            width: 70px;
            height: 55px;
            object-fit: cover;
            border-radius: 8px;
            flex-shrink: 0;
        }
        .sidebar-featured .featured-title {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.4;
        }
        .sidebar-featured .featured-date {
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        /* ===== Process ===== */
        .process-section {
            background: var(--dark-bg-2);
            border-top: 1px solid var(--card-border);
            border-bottom: 1px solid var(--card-border);
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
        }
        .process-step {
            text-align: center;
            padding: 30px 20px;
            position: relative;
        }
        .process-step::before {
            content: '';
            position: absolute;
            top: 40px;
            left: -30px;
            right: 70%;
            height: 2px;
            background: linear-gradient(to right, transparent, rgba(240, 185, 11, 0.3));
            display: none;
        }
        .process-step .step-num {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--card-bg);
            border: 2px solid var(--primary);
            color: var(--primary);
            font-size: 1.4rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            position: relative;
            z-index: 2;
        }
        .process-step .step-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 8px;
        }
        .process-step .step-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        /* ===== Features ===== */
        .features-section {
            background: var(--dark-bg);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 26px;
        }
        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 32px 26px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), transparent);
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card .feat-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(240, 185, 11, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 18px;
        }
        .feature-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }
        /* ===== FAQ ===== */
        .faq-section {
            background: var(--dark-bg-2);
            border-top: 1px solid var(--card-border);
        }
        .faq-wrapper {
            max-width: 840px;
            margin: 0 auto;
        }
        .accordion-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border) !important;
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            overflow: hidden;
        }
        .accordion-item .accordion-button {
            background: transparent;
            color: var(--text-light);
            font-weight: 600;
            font-size: 1rem;
            padding: 20px 24px;
            box-shadow: none;
            border-bottom: 1px solid transparent;
        }
        .accordion-item .accordion-button:not(.collapsed) {
            background: rgba(240, 185, 11, 0.06);
            color: var(--primary);
            border-bottom-color: var(--card-border);
        }
        .accordion-item .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(240, 185, 11, 0.15);
        }
        .accordion-item .accordion-button::after {
            filter: invert(0.7) sepia(1) saturate(3) hue-rotate(10deg);
        }
        .accordion-item .accordion-body {
            background: var(--card-bg);
            color: var(--text-muted);
            font-size: 0.95rem;
            padding: 20px 24px;
            line-height: 1.8;
        }
        /* ===== CTA ===== */
        .cta-section {
            padding: 100px 0;
            background: linear-gradient(135deg, rgba(11, 15, 25, 0.85), rgba(11, 15, 25, 0.7)),
                url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            text-align: center;
            position: relative;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        /* ===== Footer ===== */
        .footer {
            background: #080c14;
            border-top: 1px solid var(--card-border);
            padding-top: 70px;
            padding-bottom: 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 50px;
        }
        .footer-brand {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 14px;
            letter-spacing: -0.5px;
        }
        .footer-brand .brand-highlight {
            color: var(--primary);
        }
        .footer-brand-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 20px;
            line-height: 1.7;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 16px;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #0b0f19;
            transform: translateY(-3px);
        }
        .footer h5 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 18px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 24px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .about-grid {
                grid-template-columns: 1fr;
            }
            .hero-title {
                font-size: 3.2rem;
            }
        }
        @media (max-width: 768px) {
            :root {
                --spacing-section: 60px;
            }
            .navbar-collapse {
                background: rgba(11, 15, 25, 0.98);
                border-radius: var(--radius-md);
                padding: 15px;
                margin-top: 12px;
                border: 1px solid var(--card-border);
            }
            .navbar-nav {
                gap: 0;
                align-items: stretch;
            }
            .navbar-nav .nav-link {
                padding: 12px 16px !important;
            }
            .hero-title {
                font-size: 2.4rem;
            }
            .hero-subtitle {
                font-size: 1.05rem;
            }
            .hero-section {
                padding: 110px 0 70px;
            }
            .hero-stats {
                gap: 20px;
                flex-direction: column;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .section-head h2 {
                font-size: 1.7rem;
            }
            .cta-section h2 {
                font-size: 1.9rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .news-item {
                flex-wrap: wrap;
                gap: 10px;
            }
            .news-item .news-title {
                white-space: normal;
            }
            .news-item .news-date {
                width: 100%;
                padding-left: 0;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
                text-align: center;
            }
            .cta-actions {
                flex-direction: column;
                width: 100%;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .section-head p {
                font-size: 0.95rem;
            }
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #1a2d47;
            --primary-light: #243c5e;
            --primary-rgb: 26, 45, 71;
            --accent: #d4a94e;
            --accent-light: #e6c67a;
            --accent-rgb: 212, 169, 78;
            --dark-bg: #0e1a28;
            --dark-bg-2: #132335;
            --light-bg: #f5f7fb;
            --white: #ffffff;
            --text: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 8px 30px rgba(0, 0, 0, .08);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, .16);
            --transition: all .3s ease;
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-padding-top: 80px;
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background: var(--light-bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

        /* ========== 导航栏 ========== */
        .navbar {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(26, 45, 71, .08);
            padding: 12px 0;
            transition: var(--transition);
            box-shadow: 0 2px 20px rgba(26, 45, 71, .05);
        }

        .navbar.scrolled {
            padding: 8px 0;
            box-shadow: 0 4px 30px rgba(26, 45, 71, .10);
        }

        .navbar-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: .5px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .navbar-brand:hover {
            color: var(--primary);
            transform: scale(1.02);
        }

        .navbar-brand i {
            font-size: 1.3rem;
            color: var(--accent);
        }

        .brand-highlight {
            color: var(--accent);
            font-weight: 700;
        }

        .navbar-toggler {
            border: none;
            padding: 6px 10px;
            border-radius: 8px;
            transition: var(--transition);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(212, 169, 78, .4);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(26,45,71,.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .navbar-nav {
            gap: 4px;
        }

        .nav-link {
            font-weight: 500;
            color: var(--text);
            padding: 8px 16px !important;
            border-radius: 10px;
            transition: var(--transition);
            font-size: .95rem;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(26, 45, 71, .06);
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            background: linear-gradient(135deg, rgba(212, 169, 78, .15), rgba(212, 169, 78, .08));
            border: 1px solid rgba(212, 169, 78, .3);
        }

        .nav-link.active::after {
            content: '';
            display: block;
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
            margin: 4px auto 0;
        }

        /* ========== 分类 Banner ========== */
        .category-banner {
            position: relative;
            padding: 140px 0 100px;
            background: var(--dark-bg);
            overflow: hidden;
            min-height: 420px;
            display: flex;
            align-items: center;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: .45;
        }

        .category-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(14, 26, 40, .95) 0%, rgba(14, 26, 40, .75) 50%, rgba(14, 26, 40, .25) 100%);
        }

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

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: .85rem;
            color: rgba(255, 255, 255, .7);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb-custom a {
            color: var(--accent);
        }

        .breadcrumb-custom a:hover {
            color: var(--accent-light);
        }

        .breadcrumb-custom .sep {
            color: rgba(255, 255, 255, .4);
            font-size: .8rem;
        }

        .category-banner h1 {
            font-size: 3rem;
            font-weight: 800;
            color: var(--white);
            margin-bottom: 16px;
            letter-spacing: 1px;
            line-height: 1.2;
        }

        .category-banner h1 .brand-highlight {
            color: var(--accent);
        }

        .category-banner .banner-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, .85);
            max-width: 560px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .banner-badges {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: 28px;
        }

        .banner-badge {
            padding: 6px 18px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: 50px;
            color: var(--white);
            font-size: .85rem;
            backdrop-filter: blur(10px);
        }

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

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(212, 169, 78, .12);
            color: var(--accent);
            font-size: .8rem;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 50px;
            letter-spacing: .5px;
            border: 1px solid rgba(212, 169, 78, .2);
            margin-bottom: 18px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: .5px;
            line-height: 1.3;
        }

        .section-desc {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 640px;
            line-height: 1.8;
        }

        .text-center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== 分类介绍区 ========== */
        .intro-section {
            background: var(--white);
        }

        .intro-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
        }

        .intro-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        .intro-card .intro-img {
            position: relative;
            overflow: hidden;
            height: 320px;
        }

        .intro-card .intro-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .intro-card:hover .intro-img img {
            transform: scale(1.04);
        }

        .intro-card .intro-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(190deg, transparent 50%, rgba(14, 26, 40, .6));
        }

        .intro-card .intro-img .img-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(26, 45, 71, .8);
            backdrop-filter: blur(8px);
            color: var(--white);
            font-size: .75rem;
            padding: 5px 14px;
            border-radius: 50px;
            z-index: 2;
            border: 1px solid rgba(255, 255, 255, .2);
        }

        .intro-card-body {
            padding: 32px;
        }

        .intro-card-body h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .intro-card-body p {
            color: var(--text-muted);
            line-height: 1.85;
            margin-bottom: 20px;
        }

        .feature-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .feature-tag {
            padding: 4px 14px;
            background: rgba(26, 45, 71, .05);
            border: 1px solid rgba(26, 45, 71, .1);
            border-radius: 50px;
            font-size: .8rem;
            color: var(--primary);
            font-weight: 500;
        }

        /* ========== 内容卡片区 ========== */
        .content-section {
            background: var(--light-bg);
        }

        .content-card {
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: none;
            transition: var(--transition);
            height: 100%;
        }

        .content-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .content-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            height: 200px;
        }

        .content-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .content-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }

        .content-card .card-img-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(190deg, transparent 50%, rgba(14, 26, 40, .4));
        }

        .content-card .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--accent);
            color: var(--primary);
            font-size: .72rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 6px;
            z-index: 2;
            letter-spacing: .3px;
        }

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

        .content-card .card-meta i {
            color: var(--accent);
        }

        .content-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.45;
            margin-bottom: 10px;
        }

        .content-card h3 a:hover {
            color: var(--accent);
        }

        .content-card .card-excerpt {
            color: var(--text-muted);
            font-size: .875rem;
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .content-card .card-footer-link {
            border-top: 1px solid var(--border);
            padding-top: 12px;
            font-size: .85rem;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: var(--transition);
        }

        .content-card .card-footer-link:hover {
            color: var(--accent);
        }

        .content-card .card-footer-link i {
            font-size: .75rem;
            transition: transform .3s;
        }

        .content-card:hover .card-footer-link i {
            transform: translateX(4px);
        }

        /* ========== 数据展示区 ========== */
        .stats-section {
            background: var(--dark-bg);
            position: relative;
            padding: 90px 0;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: .15;
        }

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

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

        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius);
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, .1);
            transform: translateY(-4px);
        }

        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 4px;
            display: block;
        }

        .stat-label {
            color: rgba(255, 255, 255, .7);
            font-size: .9rem;
            font-weight: 500;
        }

        .stat-icon {
            font-size: 1.6rem;
            color: rgba(255, 255, 255, .5);
            margin-bottom: 12px;
        }

        /* ========== 学习路径区 ========== */
        .path-section {
            background: var(--white);
        }

        .path-step {
            position: relative;
            text-align: center;
            padding: 32px 20px;
            background: var(--light-bg);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 100%;
        }

        .path-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            border-color: rgba(212, 169, 78, .4);
        }

        .path-step .step-number {
            position: absolute;
            top: 12px;
            right: 16px;
            font-size: 3rem;
            font-weight: 800;
            color: rgba(26, 45, 71, .08);
            line-height: 1;
        }

        .path-step .step-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 1.5rem;
            box-shadow: 0 8px 24px rgba(26, 45, 71, .3);
            position: relative;
            z-index: 1;
        }

        .path-step h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }

        .path-step p {
            font-size: .85rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
            position: relative;
            z-index: 1;
        }

        .path-arrow {
            position: absolute;
            top: 50%;
            right: -18px;
            width: 36px;
            height: 36px;
            background: var(--accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: .8rem;
            z-index: 5;
            box-shadow: 0 4px 12px rgba(212, 169, 78, .4);
            transform: translateY(-50%);
        }

        /* ========== 热门专题列表 ========== */
        .topic-section {
            background: var(--light-bg);
        }

        .topic-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
            flex-wrap: wrap;
            gap: 16px;
        }

        .topic-head h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            margin: 0;
        }

        .topic-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .topic-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 18px 20px;
            transition: var(--transition);
        }

        .topic-item:hover {
            border-color: rgba(212, 169, 78, .4);
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }

        .topic-icon {
            width: 48px;
            height: 48px;
            min-width: 48px;
            background: linear-gradient(135deg, rgba(212, 169, 78, .15), rgba(212, 169, 78, .08));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.1rem;
            border: 1px solid rgba(212, 169, 78, .2);
        }

        .topic-info {
            flex: 1;
        }

        .topic-info h3 {
            font-size: .95rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 2px;
        }

        .topic-info p {
            font-size: .8rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.5;
        }

        .topic-link {
            font-size: .85rem;
            font-weight: 600;
            color: var(--accent);
            white-space: nowrap;
            padding: 6px 14px;
            border-radius: 8px;
            border: 1px solid rgba(212, 169, 78, .3);
            background: rgba(212, 169, 78, .06);
            transition: var(--transition);
        }

        .topic-link:hover {
            background: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
        }

        /* ========== FAQ 区 ========== */
        .faq-section {
            background: var(--dark-bg);
            padding: 90px 0;
        }

        .faq-section .section-title {
            color: var(--white);
        }

        .faq-section .section-desc {
            color: rgba(255, 255, 255, .7);
        }

        .faq-accordion .accordion-item {
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: 14px !important;
            margin-bottom: 14px;
            overflow: hidden;
        }

        .faq-accordion .accordion-button {
            background: transparent;
            color: var(--white);
            font-weight: 600;
            font-size: 1rem;
            padding: 16px 20px;
            box-shadow: none;
            border: none;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--accent);
            background: rgba(212, 169, 78, .1);
        }

        .faq-accordion .accordion-button::after {
            content: none;
        }

        .faq-accordion .accordion-button .faq-icon {
            margin-right: 12px;
            color: var(--accent);
            font-size: 1rem;
            width: 24px;
            height: 24px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(212, 169, 78, .15);
            border-radius: 50%;
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(212, 169, 78, .3);
        }

        .faq-accordion .accordion-body {
            color: rgba(255, 255, 255, .75);
            padding: 0 20px 18px 56px;
            font-size: .9rem;
            line-height: 1.75;
            background: transparent;
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding-top: 12px;
        }

        .faq-accordion .accordion-button .plus-icon {
            margin-left: auto;
            font-size: 1rem;
            transition: transform .3s;
            color: rgba(255, 255, 255, .6);
        }

        .faq-accordion .accordion-button:not(.collapsed) .plus-icon {
            transform: rotate(45deg);
            color: var(--accent);
        }

        /* ========== CTA 区 ========== */
        .cta-section {
            padding: 0;
        }

        .cta-box {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius);
            padding: 60px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            margin: 0 0 80px;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: .15;
        }

        .cta-box::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(212, 169, 78, .2) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-box .cta-content {
            position: relative;
            z-index: 2;
        }

        .cta-box h2 {
            color: var(--white);
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-box p {
            color: rgba(255, 255, 255, .85);
            font-size: 1rem;
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 32px;
            background: var(--accent);
            color: var(--primary);
            font-weight: 700;
            border: none;
            border-radius: 50px;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 8px 24px rgba(212, 169, 78, .4);
            cursor: pointer;
        }

        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(212, 169, 78, .5);
            background: var(--accent-light);
            color: var(--primary);
        }

        /* ========== 页脚 ========== */
        .footer {
            background: var(--dark-bg);
            color: rgba(255, 255, 255, .7);
            padding: 70px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--white);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .footer-brand-desc {
            font-size: .88rem;
            color: rgba(255, 255, 255, .6);
            line-height: 1.8;
            margin-bottom: 20px;
            max-width: 300px;
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, .08);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, .8);
            font-size: 1rem;
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, .1);
        }

        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
            transform: translateY(-3px);
        }

        .footer h5 {
            color: var(--white);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: .3px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, .6);
            font-size: .88rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-links a::before {
            content: '›';
            color: var(--accent);
            font-size: 1.2rem;
            line-height: 0;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding-top: 24px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: .8rem;
            color: rgba(255, 255, 255, .5);
            margin: 0;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .category-banner h1 {
                font-size: 2.4rem;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }

            .section {
                padding: 60px 0;
            }

            .cta-box {
                padding: 40px 30px;
            }
        }

        @media (max-width: 768px) {
            .navbar-collapse {
                background: var(--white);
                border-radius: 14px;
                padding: 16px;
                margin-top: 12px;
                box-shadow: var(--shadow);
                border: 1px solid var(--border);
            }

            .nav-link.active::after {
                margin: 4px 0 0;
            }

            .category-banner {
                padding: 110px 0 70px;
                min-height: 350px;
            }

            .category-banner h1 {
                font-size: 2rem;
            }

            .category-banner .banner-desc {
                font-size: .95rem;
            }

            .section-title {
                font-size: 1.5rem;
            }

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

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

            .path-step {
                margin-bottom: 16px;
            }

            .path-arrow {
                display: none;
            }

            .topic-item {
                flex-wrap: wrap;
            }

            .topic-link {
                margin-left: 64px;
            }

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

            .cta-box {
                padding: 32px 24px;
                margin-bottom: 60px;
            }

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

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

            .category-banner h1 {
                font-size: 1.6rem;
            }

            .banner-badges {
                gap: 6px;
            }

            .banner-badge {
                padding: 4px 12px;
                font-size: .75rem;
            }

            .intro-card .intro-img {
                height: 220px;
            }

            .intro-card-body {
                padding: 20px;
            }

            .content-card .card-img-wrap {
                height: 160px;
            }

            .stats-grid {
                gap: 12px;
            }

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

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

            .stat-label {
                font-size: .78rem;
            }

            .topic-link {
                width: 100%;
                text-align: center;
                margin-left: 64px;
            }

            .cta-box {
                padding: 28px 20px;
            }

            .cta-btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* 可访问性 */
        a:focus-visible,
        button:focus-visible,
        .nav-link:focus-visible {
            outline: 3px solid rgba(212, 169, 78, .5);
            outline-offset: 2px;
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #f5a623;
            --primary-dark: #d99114;
            --primary-light: #ffc25c;
            --secondary: #7c5cff;
            --accent: #ff6b4a;
            --dark-bg: #0b0f1a;
            --dark-bg-2: #111827;
            --dark-card: #151d2e;
            --dark-card-hover: #1c2740;
            --text-light: #f0f2f5;
            --text-muted: #8595ad;
            --border-color: rgba(255, 255, 255, 0.08);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.35);
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.4, 1);
            --section-pad: 96px;
        }

        /* ===== 基础重置 ===== */
        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-light);
            background-color: var(--dark-bg);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== 导航栏 ===== */
        .navbar {
            background-color: rgba(11, 15, 26, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            padding: 16px 0;
            transition: var(--transition);
        }

        .navbar.scrolled {
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
            padding: 12px 0;
        }

        .navbar-brand {
            font-size: 1.4rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-light);
        }

        .navbar-brand i {
            font-size: 1.3rem;
        }

        .brand-highlight {
            color: var(--primary);
            font-weight: 800;
        }

        .navbar-nav .nav-link {
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 18px;
            border-radius: 50px;
            margin-left: 4px;
            transition: var(--transition);
            position: relative;
        }

        .navbar-nav .nav-link:hover {
            color: var(--text-light);
            background: rgba(245, 166, 35, 0.1);
        }

        .navbar-nav .nav-link.active {
            color: var(--primary);
            background: rgba(245, 166, 35, 0.14);
            font-weight: 600;
        }

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

        .navbar-toggler {
            border-color: var(--border-color);
            color: var(--text-light);
            padding: 6px 12px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.3);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(240,242,245,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        @media (max-width: 991px) {
            .navbar-collapse {
                padding: 16px 0;
                border-top: 1px solid var(--border-color);
                margin-top: 14px;
            }

            .navbar-nav .nav-link {
                padding: 10px 16px;
                margin-left: 0;
                margin-bottom: 4px;
                border-radius: var(--radius-sm);
            }

            .navbar-nav .nav-link.active::after {
                left: 16px;
                transform: none;
                bottom: auto;
            }
        }

        /* ===== Hero Banner ===== */
        .review-hero {
            padding: 120px 0 90px;
            background: linear-gradient(135deg, rgba(11, 15, 26, 0.92), rgba(17, 24, 39, 0.85)),
                        url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            border-bottom: 1px solid var(--border-color);
            position: relative;
        }

        .review-hero .badge-category {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245, 166, 35, 0.12);
            border: 1px solid rgba(245, 166, 35, 0.3);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 20px;
        }

        .review-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
        }

        .review-hero h1 .text-gradient {
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .review-hero p.lead-text {
            font-size: 1.12rem;
            color: var(--text-muted);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .hero-meta-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            margin-top: 20px;
        }

        .hero-meta-stats .stat-item {
            text-align: left;
        }

        .hero-meta-stats .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-light);
            display: block;
            line-height: 1.2;
        }

        .hero-meta-stats .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: block;
        }

        @media (max-width: 768px) {
            .review-hero {
                padding: 100px 0 60px;
            }

            .review-hero h1 {
                font-size: 2rem;
            }

            .hero-meta-stats {
                gap: 20px;
            }

            .hero-meta-stats .stat-number {
                font-size: 1.4rem;
            }
        }

        /* ===== 评测分数方法论 ===== */
        .method-section {
            padding: var(--section-pad) 0;
            background: var(--dark-bg);
        }

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

        .section-header .section-tag {
            display: inline-block;
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            margin-bottom: 10px;
            position: relative;
            padding-left: 28px;
        }

        .section-header .section-tag::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 18px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .section-header h2 {
            font-size: 2.1rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 14px;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 720px;
        }

        .method-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .method-card {
            background: var(--dark-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .method-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
            opacity: 0;
            transition: var(--transition);
        }

        .method-card:hover {
            transform: translateY(-6px);
            background: var(--dark-card-hover);
            box-shadow: var(--shadow-md);
            border-color: rgba(245, 166, 35, 0.2);
        }

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

        .method-icon {
            width: 54px;
            height: 54px;
            border-radius: 14px;
            background: rgba(245, 166, 35, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .method-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

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

        .method-weight {
            display: inline-block;
            background: rgba(245, 166, 35, 0.1);
            color: var(--primary);
            font-size: 0.78rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 50px;
            margin-top: 12px;
        }

        @media (max-width: 991px) {
            .method-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .method-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 评测文章卡片区 ===== */
        .review-list-section {
            padding: var(--section-pad) 0;
            background: var(--dark-bg-2);
        }

        .review-card {
            background: var(--dark-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            height: 100%;
            transition: var(--transition);
        }

        .review-card:hover {
            transform: translateY(-6px);
            border-color: rgba(245, 166, 35, 0.25);
            box-shadow: var(--shadow-lg);
        }

        .review-card-cover {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }

        .review-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .review-card:hover .review-card-cover img {
            transform: scale(1.06);
        }

        .review-card-cover .cover-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 15, 26, 0.1) 40%, rgba(11, 15, 26, 0.75) 100%);
        }

        .review-card-cover .card-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(11, 15, 26, 0.78);
            backdrop-filter: blur(8px);
            color: var(--primary);
            font-size: 0.77rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            border: 1px solid rgba(245, 166, 35, 0.25);
        }

        .review-score {
            position: absolute;
            right: 16px;
            top: 16px;
            background: rgba(11, 15, 26, 0.82);
            backdrop-filter: blur(8px);
            width: 52px;
            height: 52px;
            border-radius: 50%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            border: 2px solid var(--primary);
            line-height: 1;
        }

        .review-score .score-num {
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--primary);
        }

        .review-score .score-label {
            font-size: 0.56rem;
            color: var(--text-muted);
            letter-spacing: 0.06em;
        }

        .review-card-body {
            padding: 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .review-card-body .review-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }

        .review-card-body .review-meta i {
            color: var(--primary);
            margin-right: 4px;
        }

        .review-card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 12px;
        }

        .review-card-body h3 a {
            color: var(--text-light);
        }

        .review-card-body h3 a:hover {
            color: var(--primary);
        }

        .review-card-body .review-desc {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }

        .review-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 18px;
        }

        .review-tags .tag {
            font-size: 0.75rem;
            padding: 3px 10px;
            border-radius: 50px;
            background: rgba(124, 92, 255, 0.1);
            color: #b7a8ff;
            border: 1px solid rgba(124, 92, 255, 0.2);
        }

        .review-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .review-link i {
            transition: transform 0.3s ease;
        }

        .review-link:hover {
            color: var(--primary-light);
        }

        .review-link:hover i {
            transform: translateX(5px);
        }

        @media (max-width: 768px) {
            .review-card-body {
                padding: 20px;
            }
        }

        /* ===== 热门排行 ===== */
        .ranking-section {
            padding: var(--section-pad) 0;
            background: var(--dark-bg);
        }

        .ranking-wrapper {
            background: var(--dark-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px;
        }

        .ranking-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .ranking-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .ranking-item:last-child {
            border-bottom: none;
        }

        .ranking-item:hover {
            background: rgba(245, 166, 35, 0.03);
            padding-left: 12px;
        }

        .ranking-num {
            font-size: 1.4rem;
            font-weight: 800;
            color: rgba(245, 166, 35, 0.35);
            width: 40px;
            text-align: center;
            flex-shrink: 0;
        }

        .ranking-item:nth-child(1) .ranking-num {
            color: var(--primary);
        }

        .ranking-item:nth-child(2) .ranking-num {
            color: #c0c7d1;
        }

        .ranking-item:nth-child(3) .ranking-num {
            color: #cd7f4a;
        }

        .ranking-info {
            flex: 1;
            min-width: 0;
        }

        .ranking-info .ranking-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-light);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .ranking-info .ranking-sub {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        .ranking-category {
            font-size: 0.75rem;
            padding: 3px 10px;
            border-radius: 50px;
            background: rgba(245, 166, 35, 0.09);
            color: var(--primary);
            border: 1px solid rgba(245, 166, 35, 0.15);
            flex-shrink: 0;
            white-space: nowrap;
        }

        .ranking-score {
            font-size: 0.88rem;
            font-weight: 600;
            min-width: 60px;
            text-align: right;
            flex-shrink: 0;
        }

        .ranking-score .score-num {
            color: var(--primary);
            font-size: 1.2rem;
            font-weight: 800;
        }

        .ranking-score .score-total {
            color: var(--text-muted);
            font-size: 0.82rem;
        }

        @media (max-width: 576px) {
            .ranking-wrapper {
                padding: 24px;
            }

            .ranking-item {
                flex-wrap: wrap;
                gap: 10px;
            }

            .ranking-category {
                display: none;
            }

            .ranking-score {
                min-width: auto;
            }
        }

        /* ===== 工具带 ===== */
        .tool-section {
            padding: var(--section-pad) 0;
            background: linear-gradient(135deg, rgba(124, 92, 255, 0.05), rgba(245, 166, 35, 0.04));
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

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

        .tool-card {
            background: var(--dark-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
            text-align: center;
            transition: var(--transition);
        }

        .tool-card:hover {
            transform: translateY(-4px);
            border-color: rgba(245, 166, 35, 0.2);
            box-shadow: var(--shadow-md);
        }

        .tool-icon {
            width: 68px;
            height: 68px;
            border-radius: 50%;
            background: rgba(245, 166, 35, 0.12);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 18px;
        }

        .tool-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .tool-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        @media (max-width: 991px) {
            .tool-grid {
                grid-template-columns: 1fr;
                max-width: 460px;
                margin: 0 auto;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--section-pad) 0;
            background: var(--dark-bg-2);
        }

        .accordion-item {
            background: var(--dark-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .accordion-item:not(:first-of-type) {
            border-top: 1px solid var(--border-color);
        }

        .accordion-item:hover {
            border-color: rgba(245, 166, 35, 0.2);
        }

        .accordion-button {
            background: var(--dark-card);
            color: var(--text-light);
            font-weight: 600;
            font-size: 1rem;
            padding: 20px 24px;
            box-shadow: none;
            transition: var(--transition);
        }

        .accordion-button::after {
            filter: invert(70%) sepia(40%) saturate(600%) hue-rotate(2deg);
        }

        .accordion-button:not(.collapsed) {
            background: rgba(245, 166, 35, 0.06);
            color: var(--primary);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.15);
            border-color: rgba(245, 166, 35, 0.3);
        }

        .accordion-body {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.75;
        }

        .accordion-item:first-of-type {
            border-radius: var(--radius-md) !important;
        }

        .accordion-item:last-of-type {
            border-radius: var(--radius-md) !important;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 72px 0;
            background: linear-gradient(135deg, rgba(245, 166, 35, 0.08), rgba(124, 92, 255, 0.06)),
                        url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            border-top: 1px solid var(--border-color);
            position: relative;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 15, 26, 0.78);
        }

        .cta-box {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-box h2 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 14px;
        }

        .cta-box p {
            color: var(--text-muted);
            font-size: 1.05rem;
            margin-bottom: 28px;
        }

        .btn-light-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--primary);
            color: #0b0f1a;
            border: 2px solid var(--primary);
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
        }

        .btn-light-custom:hover {
            background: transparent;
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(245, 166, 35, 0.15);
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: var(--text-light);
            border: 2px solid rgba(255, 255, 255, 0.25);
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
        }

        .btn-outline-custom:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        @media (max-width: 576px) {
            .cta-box h2 {
                font-size: 1.6rem;
            }

            .cta-buttons {
                display: flex;
                flex-direction: column;
                gap: 12px;
                align-items: center;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: #080b13;
            border-top: 1px solid var(--border-color);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 16px;
        }

        .footer-brand-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 20px;
            max-width: 320px;
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--dark-card);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: rgba(245, 166, 35, 0.12);
            color: var(--primary);
            border-color: rgba(245, 166, 35, 0.3);
            transform: translateY(-3px);
        }

        .footer h5 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 18px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding: 20px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin: 0;
        }

        @media (max-width: 991px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 576px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        /* ===== 通用辅助 ===== */
        .page-transition {
            animation: fadeInUp 0.6s ease-out both;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .divider-line {
            width: 100%;
            height: 1px;
            background: var(--border-color);
            margin: 32px 0;
        }

        @media (max-width: 768px) {
            :root {
                --section-pad: 64px;
            }

            .section-header h2 {
                font-size: 1.6rem;
            }
        }

/* roulang page: article */
:root {
            --primary: #16324f;
            --primary-dark: #0d2138;
            --primary-light: #2d5575;
            --accent: #c9a24b;
            --accent-dark: #a8843a;
            --accent-light: #e8cf8c;
            --bg: #f7f6f2;
            --bg-alt: #edf0f4;
            --card: #ffffff;
            --text: #1c2333;
            --text-muted: #6e7b8a;
            --border: #e5e8ed;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 10px rgba(22, 50, 79, .05);
            --shadow-md: 0 8px 30px rgba(22, 50, 79, .08);
            --shadow-lg: 0 16px 48px rgba(22, 50, 79, .15);
            --transition: all .3s cubic-bezier(.4, 0, .2, 1);
            --spacing-section: 5.5rem;
            --font-sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            margin: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        /* 按钮 */
        .btn {
            border-radius: 30px;
            padding: .65rem 1.75rem;
            font-weight: 600;
            border: none;
            transition: var(--transition);
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            box-shadow: 0 6px 18px rgba(22, 50, 79, .2);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(22, 50, 79, .28);
        }
        .btn-accent {
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            color: #1a1a1a;
            box-shadow: 0 6px 18px rgba(201, 162, 75, .25);
        }
        .btn-accent:hover {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(201, 162, 75, .35);
        }
        .btn-outline-inverse {
            border: 2px solid rgba(255, 255, 255, .7);
            color: #fff;
            border-radius: 30px;
            padding: .6rem 1.7rem;
            font-weight: 600;
            background: transparent;
            transition: var(--transition);
        }
        .btn-outline-inverse:hover {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn:focus,
        .btn-outline-inverse:focus,
        .nav-link:focus,
        a:focus {
            outline: 2px solid rgba(201, 162, 75, .6);
            outline-offset: 2px;
            box-shadow: none;
        }

        /* 导航 */
        .navbar {
            background: rgba(255, 255, 255, .92);
            backdrop-filter: saturate(180%) blur(16px);
            -webkit-backdrop-filter: saturate(180%) blur(16px);
            box-shadow: 0 1px 0 rgba(22, 50, 79, .08), 0 8px 30px rgba(22, 50, 79, .04);
            padding-top: .85rem;
            padding-bottom: .85rem;
            border-bottom: 1px solid rgba(22, 50, 79, .06);
            z-index: 1030;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: .5px;
            color: var(--text) !important;
            display: inline-flex;
            align-items: center;
            gap: .4rem;
        }
        .navbar-brand i {
            color: var(--primary);
            font-size: 1.2rem;
        }
        .brand-highlight {
            color: var(--accent);
            font-weight: 800;
        }
        .navbar .nav-link {
            font-weight: 500;
            color: #33435a;
            padding: .55rem 1.1rem !important;
            border-radius: 30px;
            margin: 0 .15rem;
            transition: var(--transition);
        }
        .navbar .nav-link:hover {
            color: var(--primary);
            background: rgba(22, 50, 79, .06);
        }
        .navbar .nav-link.active {
            color: #fff !important;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            box-shadow: 0 4px 14px rgba(22, 50, 79, .25);
        }
        .navbar-toggler {
            border: none;
            color: var(--primary);
            padding: .4rem .65rem;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2822,50,79,0.9%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* 文章 Hero */
        .article-hero {
            position: relative;
            min-height: 460px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 9rem 0 4.5rem;
            background: linear-gradient(135deg, rgba(13, 33, 56, .94) 0%, rgba(45, 85, 117, .78) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            overflow: hidden;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--bg), transparent);
            z-index: 2;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .article-hero-inner {
            max-width: 820px;
            margin: 0 auto;
        }
        .badge-category {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            padding: .45rem 1.3rem;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(201, 162, 75, .45);
            color: #f0d697;
            border-radius: 30px;
            font-size: .85rem;
            font-weight: 600;
            letter-spacing: .5px;
            margin-bottom: 1.5rem;
            backdrop-filter: blur(4px);
        }
        .article-title {
            color: #fff;
            font-size: clamp(1.75rem, 3.5vw, 2.75rem);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 1.25rem;
            text-shadow: 0 2px 20px rgba(0, 0, 0, .2);
        }
        .article-meta {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 1.5rem;
            color: rgba(255, 255, 255, .75);
            font-size: .95rem;
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
        }
        .article-meta i {
            color: var(--accent-light);
        }

        /* 文章正文 */
        .article-main {
            padding: 3.5rem 0 0;
            background: var(--bg);
        }
        .article-content-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .article-body {
            background: var(--card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: clamp(1.75rem, 4vw, 3.25rem);
            border: 1px solid var(--border);
        }
        .article-body .article-lead {
            font-size: 1.12rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 2rem;
            padding: 0 0 1.5rem;
            border-bottom: 1px solid var(--border);
            font-weight: 500;
        }
        .article-body h2 {
            font-size: 1.65rem;
            font-weight: 700;
            color: var(--primary);
            margin-top: 2rem;
            margin-bottom: 1rem;
            padding-bottom: .6rem;
            border-bottom: 2px solid rgba(201, 162, 75, .3);
            line-height: 1.4;
        }
        .article-body h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary-light);
            margin-top: 1.8rem;
            margin-bottom: .9rem;
            line-height: 1.4;
        }
        .article-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-top: 1.5rem;
            margin-bottom: .7rem;
        }
        .article-body p {
            font-size: 1.0625rem;
            line-height: 1.95;
            margin-bottom: 1.5rem;
            color: #2f3540;
        }
        .article-body ul,
        .article-body ol {
            padding-left: 1.5rem;
            margin-bottom: 1.5rem;
            line-height: 1.9;
        }
        .article-body ul li,
        .article-body ol li {
            margin-bottom: .5rem;
        }
        .article-body img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            margin: 2rem 0;
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: var(--bg);
            padding: 1.2rem 1.5rem;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-muted);
            font-style: italic;
            margin: 2rem 0;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
        }
        .article-body table th {
            background: var(--bg-alt);
            font-weight: 700;
            padding: .75rem 1rem;
            border: 1px solid var(--border);
            color: var(--primary);
        }
        .article-body table td {
            padding: .75rem 1rem;
            border: 1px solid var(--border);
        }

        /* 内容未找到 */
        .article-notfound {
            text-align: center;
            padding: 5rem 2rem;
            background: var(--card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
        }
        .notfound-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 80px;
            height: 80px;
            background: rgba(22, 50, 79, .08);
            border-radius: 50%;
            color: var(--primary);
            font-size: 2rem;
            margin-bottom: 1.5rem;
        }
        .article-notfound h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 1rem;
        }
        .article-notfound p {
            color: var(--text-muted);
            margin-bottom: 2rem;
        }

        /* 标签与分享 */
        .article-bottom {
            padding: 2.5rem 0 3.5rem;
            background: var(--bg);
        }
        .article-tags-wrap {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1.5rem;
            max-width: 860px;
            margin: 0 auto;
            padding: 1.25rem 1.75rem;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .tag-chips {
            display: flex;
            flex-wrap: wrap;
            gap: .6rem;
        }
        .tag-chip {
            padding: .35rem 1rem;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 30px;
            font-size: .85rem;
            color: var(--text-muted);
            font-weight: 600;
            transition: var(--transition);
        }
        .tag-chip:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .share-icons {
            display: flex;
            gap: .65rem;
        }
        .share-icons a {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--bg);
            border-radius: 50%;
            color: var(--text-muted);
            border: 1px solid var(--border);
            font-size: 1rem;
            transition: var(--transition);
        }
        .share-icons a:hover {
            background: var(--primary);
            color: var(--accent-light);
            transform: translateY(-3px);
            box-shadow: var(--shadow-sm);
        }

        /* 相关推荐 */
        .related-section {
            padding: var(--spacing-section) 0;
            background: linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%);
            border-top: 1px solid var(--border);
        }
        .section-heading {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-heading .section-tag {
            display: inline-block;
            color: var(--accent-dark);
            font-weight: 700;
            font-size: .85rem;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: .5rem;
        }
        .section-heading h2 {
            font-size: clamp(1.75rem, 3vw, 2.4rem);
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 1rem;
        }
        .section-heading p {
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto;
        }
        .related-card {
            position: relative;
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(201, 162, 75, .4);
        }
        .card-img-wrap {
            position: relative;
            display: block;
            height: 220px;
            overflow: hidden;
        }
        .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .related-card:hover .card-img-wrap img {
            transform: scale(1.07);
        }
        .related-cat {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(255, 255, 255, .95);
            color: var(--primary);
            font-size: .8rem;
            font-weight: 700;
            padding: .35rem .9rem;
            border-radius: 30px;
            box-shadow: var(--shadow-sm);
            letter-spacing: .5px;
            z-index: 2;
        }
        .related-card-body {
            padding: 1.5rem;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }
        .related-card-body h3 {
            font-size: 1.18rem;
            font-weight: 700;
            line-height: 1.45;
            margin-bottom: .75rem;
        }
        .related-card-body h3 a {
            color: var(--text);
            transition: var(--transition);
        }
        .related-card-body h3 a:hover {
            color: var(--primary);
        }
        .related-card-body p {
            color: var(--text-muted);
            font-size: .925rem;
            line-height: 1.75;
            margin-bottom: 1.25rem;
            flex-grow: 1;
        }
        .related-more {
            color: var(--accent-dark);
            font-weight: 600;
            font-size: .925rem;
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            transition: var(--transition);
        }
        .related-more:hover {
            color: var(--primary);
            gap: .55rem;
        }

        /* CTA */
        .cta-section {
            padding: 5.5rem 0;
            background: linear-gradient(135deg, rgba(13, 33, 56, .95), rgba(169, 132, 58, .55)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            text-align: center;
            color: #fff;
        }
        .cta-inner {
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-section h2 {
            font-size: clamp(1.9rem, 3.5vw, 2.8rem);
            font-weight: 800;
            margin-bottom: 1rem;
            text-shadow: 0 2px 12px rgba(0, 0, 0, .2);
        }
        .cta-section p {
            color: rgba(255, 255, 255, .82);
            max-width: 620px;
            margin: 0 auto 2rem;
            font-size: 1.05rem;
        }
        .cta-actions {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* 页脚 */
        .footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, .7);
            padding: 4rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2.5rem;
            padding-bottom: 3rem;
            border-bottom: 1px solid rgba(255, 255, 255, .1);
            margin-bottom: 1.5rem;
        }
        .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: .4rem;
        }
        .footer-brand i {
            color: var(--accent) !important;
        }
        .footer-brand-desc {
            font-size: .95rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, .55);
            margin-top: 1rem;
            margin-bottom: 1.25rem;
        }
        .footer-social {
            display: flex;
            gap: .75rem;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, .06);
            border-radius: 50%;
            color: rgba(255, 255, 255, .75);
            font-size: 1.05rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-3px);
        }
        .footer h5 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 1.35rem;
            position: relative;
            padding-bottom: .6rem;
        }
        .footer h5::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 30px;
            height: 3px;
            border-radius: 2px;
            background: var(--accent);
        }
        .footer-links li {
            margin-bottom: .65rem;
        }
        .footer-links a {
            color: rgba(255, 255, 255, .6);
            font-size: .95rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-light);
            padding-left: .35rem;
        }
        .footer-bottom {
            text-align: center;
            padding: 1.5rem 0 1.65rem;
            color: rgba(255, 255, 255, .4);
            font-size: .9rem;
            border-top: 1px solid rgba(255, 255, 255, .08);
        }

        /* 响应式 */
        @media (max-width: 1199.98px) {
            .container {
                max-width: 960px;
            }
            .footer-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 2rem;
            }
        }
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: #fff;
                padding: 1rem;
                border-radius: var(--radius-md);
                box-shadow: var(--shadow-md);
                margin-top: .75rem;
                border: 1px solid var(--border);
            }
            .navbar .nav-link {
                padding: .65rem 1.25rem !important;
                margin: .1rem 0;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-hero {
                min-height: 420px;
                padding: 8rem 0 4rem;
            }
        }
        @media (max-width: 767.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .related-card {
                margin-bottom: 1rem;
            }
            .article-tags-wrap {
                flex-direction: column;
                align-items: flex-start;
            }
            .article-hero {
                min-height: 380px;
                padding: 7rem 0 3.5rem;
            }
            .article-title {
                font-size: 1.6rem;
            }
            .article-body {
                padding: 1.5rem 1.25rem;
            }
            .article-body p {
                font-size: 1rem;
                line-height: 1.85;
            }
            .cta-section {
                padding: 4rem 0;
            }
            .cta-actions .btn {
                width: 100%;
                max-width: 320px;
                margin-bottom: .5rem;
            }
            .section-heading {
                margin-bottom: 2rem;
            }
        }
        @media (max-width: 520px) {
            .article-meta {
                gap: .75rem;
                font-size: .85rem;
                flex-direction: column;
                align-items: center;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .navbar-brand {
                font-size: 1.15rem;
            }
            .footer {
                padding-top: 3rem;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
        }

/* roulang page: category3 */
:root {
    --primary: #f0b90b;
    --primary-light: #fcd535;
    --primary-dark: #d4a108;
    --accent: #0ecb81;
    --accent-dark: #0a9e63;
    --bg-body: #0b0e14;
    --bg-deep: #070a0f;
    --bg-section: #10141d;
    --bg-card: #161c28;
    --bg-card-hover: #1e2534;
    --bg-soft: rgba(240, 185, 11, 0.08);
    --text-title: #eef1f7;
    --text-body: #b6bfce;
    --text-muted: #7e8ca3;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-gold: rgba(240, 185, 11, 0.25);
    --radius-lg: 18px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.25);
    --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.45);
    --shadow-gold: 0 8px 24px rgba(240, 185, 11, 0.2);
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: var(--font-main);
    background-color: var(--bg-body);
    color: var(--text-body);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
}
a {
    color: var(--text-body);
    text-decoration: none;
    transition: var(--transition);
}
a:hover {
    color: var(--primary);
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
button,
input {
    font-family: inherit;
}
.container {
    max-width: 1200px;
}
a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}
::selection {
    background: var(--primary);
    color: #131722;
}

/* ===== 导航 ===== */
.navbar {
    background: rgba(11, 14, 20, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
    transition: var(--transition);
    z-index: 1050;
}
.navbar.scrolled {
    box-shadow: var(--shadow-md);
    padding: 8px 0;
}
.navbar-brand {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-title);
    letter-spacing: 0.5px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.navbar-brand i {
    font-size: 1.3rem;
    color: var(--primary);
}
.brand-highlight {
    color: var(--primary);
}
.navbar .nav-link {
    color: var(--text-body);
    font-weight: 500;
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    position: relative;
    margin: 0 2px;
    font-size: 15px;
}
.navbar .nav-link:hover {
    color: var(--primary);
    background: var(--bg-soft);
}
.navbar .nav-link.active {
    color: var(--primary);
    font-weight: 700;
    background: var(--bg-soft);
}
.navbar .nav-link.active::after {
    content: "";
    position: absolute;
    bottom: 2px;
    left: 18px;
    right: 18px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}
.navbar-toggler {
    border: 1px solid var(--border-gold);
    background: var(--bg-soft);
    padding: 6px 10px;
}
.navbar-toggler:focus {
    box-shadow: none;
    outline: 2px solid var(--primary);
}
.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(240,185,11,0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ===== 分类 Hero ===== */
.hero-category {
    position: relative;
    padding: 160px 0 100px;
    background: linear-gradient(135deg, rgba(7, 10, 15, 0.88) 0%, rgba(11, 14, 20, 0.72) 50%, rgba(22, 28, 40, 0.85) 100%), url("/assets/images/backpic/back-2.png") center/cover no-repeat;
    overflow: hidden;
    border-bottom: 1px solid var(--border-gold);
}
.hero-category::before {
    content: "";
    position: absolute;
    top: -60%;
    right: -20%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(240, 185, 11, 0.12) 0%, transparent 70%);
    pointer-events: none;
}
.hero-category .container {
    position: relative;
    z-index: 2;
}
.breadcrumb-custom {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 24px;
}
.breadcrumb-custom a {
    color: var(--text-muted);
    transition: var(--transition);
}
.breadcrumb-custom a:hover {
    color: var(--primary);
}
.breadcrumb-custom span {
    color: var(--primary);
    font-weight: 600;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-soft);
    border: 1px solid var(--border-gold);
    color: var(--primary);
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 18px;
    letter-spacing: 0.5px;
}
.hero-category h1 {
    font-size: 3.2rem;
    font-weight: 800;
    color: var(--text-title);
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: 1px;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}
.hero-category .lead-text {
    font-size: 1.2rem;
    color: var(--text-body);
    max-width: 620px;
    margin-bottom: 30px;
    line-height: 1.8;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}
.btn-cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #131722;
    font-weight: 700;
    border: none;
    padding: 13px 32px;
    border-radius: 50px;
    transition: var(--transition);
    box-shadow: var(--shadow-gold);
    font-size: 15px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.btn-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 36px rgba(240, 185, 11, 0.35);
    color: #131722;
}
.btn-outline {
    background: transparent;
    border: 1.5px solid var(--border-gold);
    color: var(--primary);
    font-weight: 600;
    padding: 12px 28px;
    border-radius: 50px;
    transition: var(--transition);
    font-size: 15px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.btn-outline:hover {
    background: var(--bg-soft);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

/* ===== 通用板块 ===== */
.section {
    padding: 90px 0;
}
.section-alt {
    background: var(--bg-section);
}
.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 56px;
}
.section-tag {
    display: inline-block;
    padding: 6px 18px;
    background: var(--bg-soft);
    border: 1px solid var(--border-gold);
    border-radius: 50px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 14px;
}
.section-header h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-title);
    margin-bottom: 14px;
    line-height: 1.3;
}
.section-header p {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.8;
}

/* ===== 策略架构卡片 ===== */
.strategy-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    height: 100%;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.strategy-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}
.strategy-card:hover {
    transform: translateY(-8px);
    background: var(--bg-card-hover);
    border-color: var(--border-gold);
    box-shadow: var(--shadow-lg);
}
.strategy-card:hover::before {
    transform: scaleX(1);
}
.strategy-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    background: var(--bg-soft);
    border: 1px solid var(--border-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 22px;
    transition: var(--transition);
}
.strategy-card:hover .strategy-icon {
    background: var(--primary);
    color: #131722;
    transform: rotate(-6deg) scale(1.05);
}
.strategy-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-title);
    margin-bottom: 10px;
}
.strategy-card .strategy-tag {
    display: inline-block;
    font-size: 13px;
    color: var(--accent);
    background: rgba(14, 203, 129, 0.1);
    border: 1px solid rgba(14, 203, 129, 0.2);
    padding: 4px 14px;
    border-radius: 50px;
    margin-bottom: 14px;
    font-weight: 500;
}
.strategy-card p {
    font-size: 15px;
    color: var(--text-body);
    line-height: 1.8;
    margin-bottom: 16px;
}
.strategy-card .strategy-footer {
    font-size: 13px;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    padding-top: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.strategy-card .strategy-footer i {
    color: var(--primary);
}

/* ===== 文章卡片 ===== */
.article-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 100%;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.article-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-gold);
    background: var(--bg-card-hover);
}
.article-thumb {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 10;
}
.article-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.article-card:hover .article-thumb img {
    transform: scale(1.06);
}
.article-thumb::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(11, 14, 20, 0.45) 0%, transparent 50%);
}
.article-cat {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    background: rgba(11, 14, 20, 0.82);
    backdrop-filter: blur(8px);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 50px;
    border: 1px solid var(--border-gold);
}
.article-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.article-body h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-title);
    line-height: 1.5;
    margin-bottom: 10px;
    transition: var(--transition);
}
.article-card:hover .article-body h3 {
    color: var(--primary);
}
.article-body p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    flex: 1;
    margin-bottom: 16px;
}
.article-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 13px;
    color: var(--text-muted);
    padding-top: 14px;
    border-top: 1px solid var(--border-color);
}
.article-meta i {
    color: var(--primary);
    margin-right: 4px;
}

/* ===== 统计区块 ===== */
.stats-section {
    position: relative;
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(7, 10, 15, 0.92) 0%, rgba(11, 14, 20, 0.85) 60%, rgba(22, 28, 40, 0.92) 100%), url("/assets/images/backpic/back-1.png") center/cover no-repeat;
    border-top: 1px solid var(--border-gold);
    border-bottom: 1px solid var(--border-gold);
}
.stat-card {
    text-align: center;
    padding: 30px 24px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    transition: var(--transition);
    height: 100%;
}
.stat-card:hover {
    border-color: var(--border-gold);
    background: rgba(240, 185, 11, 0.06);
    transform: translateY(-5px);
}
.stat-number {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
    margin-bottom: 6px;
}
.stat-label {
    font-size: 15px;
    color: var(--text-body);
    font-weight: 500;
}
.stat-icon {
    font-size: 1.2rem;
    color: var(--accent);
    margin-bottom: 14px;
}

/* ===== 流程步骤 ===== */
.process-item {
    position: relative;
    padding: 30px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    height: 100%;
    transition: var(--transition);
}
.process-item:hover {
    border-color: var(--border-gold);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}
.process-step {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-soft);
    border: 1px solid var(--border-gold);
    color: var(--primary);
    font-weight: 800;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    transition: var(--transition);
}
.process-item:hover .process-step {
    background: var(--primary);
    color: #131722;
}
.process-item h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-title);
    margin-bottom: 10px;
}
.process-item p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 0;
}

/* ===== 对比表格 ===== */
.compare-wrap {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}
.compare-table {
    width: 100%;
    border-collapse: collapse;
}
.compare-table th,
.compare-table td {
    padding: 16px 20px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    font-size: 15px;
}
.compare-table thead th {
    background: var(--bg-soft);
    color: var(--primary);
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 1px;
}
.compare-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.03);
}
.compare-table tbody tr:last-child th,
.compare-table tbody tr:last-child td {
    border-bottom: none;
}
.compare-table .strategy-name {
    text-align: left;
    font-weight: 600;
    color: var(--text-title);
}
.compare-table .stars {
    color: var(--primary);
    letter-spacing: 2px;
    font-size: 14px;
}
.compare-table .fit-tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    background: var(--bg-soft);
    color: var(--primary);
    border: 1px solid rgba(240, 185, 11, 0.2);
}

/* ===== 特色图文 ===== */
.featured-area {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.featured-img {
    height: 100%;
    min-height: 380px;
    position: relative;
    overflow: hidden;
}
.featured-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}
.featured-area:hover .featured-img img {
    transform: scale(1.04);
}
.featured-content {
    padding: 50px 44px;
}
.featured-content h2 {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-title);
    margin-bottom: 16px;
    line-height: 1.4;
}
.featured-content > p {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 24px;
}
.feature-list {
    list-style: none;
    margin: 0 0 30px;
    padding: 0;
}
.feature-list li {
    padding: 8px 0;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 15px;
    color: var(--text-body);
}
.feature-list li i {
    color: var(--accent);
    margin-top: 4px;
}

/* ===== FAQ ===== */
.custom-accordion .accordion-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md) !important;
    margin-bottom: 14px;
    overflow: hidden;
    transition: var(--transition);
}
.custom-accordion .accordion-item:hover {
    border-color: var(--border-gold);
}
.custom-accordion .accordion-button {
    background: transparent;
    color: var(--text-title);
    font-weight: 600;
    font-size: 1rem;
    padding: 20px 24px;
    transition: var(--transition);
    box-shadow: none;
}
.custom-accordion .accordion-button:not(.collapsed) {
    color: var(--primary);
    background: var(--bg-soft);
}
.custom-accordion .accordion-button::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23f0b90b'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}
.custom-accordion .accordion-body {
    padding: 4px 24px 24px;
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section {
    padding: 90px 0;
    position: relative;
    background: linear-gradient(135deg, rgba(7, 10, 15, 0.9) 0%, rgba(11, 14, 20, 0.82) 60%, rgba(22, 28, 40, 0.88) 100%), url("/assets/images/backpic/back-3.png") center/cover no-repeat;
    border-top: 1px solid var(--border-gold);
}
.cta-inner {
    max-width: 680px;
    margin: 0 auto;
    text-align: center;
}
.cta-inner h2 {
    font-size: 2.1rem;
    font-weight: 800;
    color: var(--text-title);
    margin-bottom: 14px;
}
.cta-inner p {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 32px;
    line-height: 1.8;
}
.cta-form {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
}
.cta-input {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-gold);
    border-radius: 50px;
    padding: 13px 24px;
    color: var(--text-title);
    min-width: 320px;
    font-size: 0.95rem;
    transition: var(--transition);
}
.cta-input::placeholder {
    color: var(--text-muted);
}
.cta-input:focus {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--bg-soft);
    color: var(--text-title);
    outline: none;
}

/* ===== 页脚 ===== */
.footer {
    background: var(--bg-deep);
    border-top: 1px solid var(--border-color);
    padding: 70px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 50px;
}
.footer-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text-title);
    margin-bottom: 16px;
}
.footer-brand-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 20px;
}
.footer-social {
    display: flex;
    gap: 12px;
}
.footer-social a {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: var(--transition);
}
.footer-social a:hover {
    background: var(--primary);
    color: #131722;
    border-color: var(--primary);
    transform: translateY(-3px);
}
.footer h5 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-title);
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
}
.footer h5::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}
.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-links li {
    margin-bottom: 10px;
}
.footer-links li a {
    color: var(--text-muted);
    font-size: 14px;
    transition: var(--transition);
}
.footer-links li a:hover {
    color: var(--primary);
    padding-left: 4px;
}
.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: 22px 0;
    text-align: center;
}
.footer-bottom p {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .hero-category {
        padding: 140px 0 80px;
    }
    .hero-category h1 {
        font-size: 2.6rem;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
    .featured-content {
        padding: 40px 30px;
    }
}
@media (max-width: 768px) {
    .section {
        padding: 64px 0;
    }
    .section-header h2 {
        font-size: 1.7rem;
    }
    .hero-category {
        padding: 120px 0 60px;
    }
    .hero-category h1 {
        font-size: 2.1rem;
    }
    .hero-category .lead-text {
        font-size: 1rem;
    }
    .compare-table th,
    .compare-table td {
        padding: 12px 10px;
        font-size: 13px;
    }
    .compare-table .strategy-name {
        min-width: 80px;
    }
    .cta-inner h2 {
        font-size: 1.7rem;
    }
    .cta-input {
        min-width: 100%;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    .featured-img {
        min-height: 280px;
    }
}
@media (max-width: 520px) {
    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }
    .hero-actions .btn {
        text-align: center;
        justify-content: center;
    }
    .hero-category h1 {
        font-size: 1.8rem;
    }
    .section-header h2 {
        font-size: 1.45rem;
    }
    .stat-number {
        font-size: 1.9rem;
    }
    .compare-wrap {
        overflow-x: auto;
    }
    .compare-table {
        min-width: 520px;
    }
}