/* roulang page: index */
:root {
            --primary: #4f46e5;
            --primary-dark: #4338ca;
            --primary-light: #818cf8;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg: #f8fafc;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-light: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }

        ul {
            list-style: none;
        }

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

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
        }

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

        .logo-txt {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .logo-txt i {
            font-size: 1.6rem;
            color: var(--accent);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .main-nav a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            padding: 8px 0;
            position: relative;
            transition: var(--transition);
        }

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

        .main-nav a.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff !important;
            padding: 10px 22px !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
            transition: var(--transition);
        }

        .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(79, 70, 229, 0.45);
        }

        .mobile-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--text);
            padding: 8px;
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 16px 24px;
            gap: 14px;
        }

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

        .mobile-menu a {
            padding: 12px 0;
            border-bottom: 1px solid #f1f5f9;
            color: var(--text);
            font-weight: 500;
        }

        .mobile-menu a:last-child {
            border-bottom: none;
        }

        .hero-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 120px 0 100px;
            color: #fff;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(79, 70, 229, 0.72) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245, 158, 11, 0.18);
            border: 1px solid rgba(245, 158, 11, 0.4);
            color: #fcd34d;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }

        .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: 1px;
        }

        .hero-subtitle {
            font-size: 1.25rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 32px;
            line-height: 1.8;
            max-width: 620px;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: #1e293b;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 1rem;
            box-shadow: 0 6px 24px rgba(245, 158, 11, 0.4);
            transition: var(--transition);
        }

        .btn-primary:hover {
            background: var(--accent-light);
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(245, 158, 11, 0.5);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 1rem;
            transition: var(--transition);
            backdrop-filter: blur(4px);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }

        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 56px;
            flex-wrap: wrap;
        }

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

        .hero-stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: #fcd34d;
        }

        .hero-stat-item .label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 4px;
        }

        .section {
            padding: 80px 0;
        }

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-block;
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 2.1rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-light);
            line-height: 1.8;
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .intro-img {
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            overflow: hidden;
        }

        .intro-img img {
            width: 100%;
            height: 400px;
            object-fit: cover;
        }

        .intro-text h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.4;
        }

        .intro-text p {
            margin-bottom: 16px;
            color: var(--text-light);
            line-height: 1.9;
        }

        .intro-features {
            margin-top: 24px;
            display: grid;
            gap: 14px;
        }

        .intro-feature-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: #fff;
            padding: 16px 20px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
            transition: var(--transition);
        }

        .intro-feature-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }

        .intro-feature-item i {
            color: var(--primary);
            font-size: 1.3rem;
            margin-top: 2px;
        }

        .intro-feature-item .ft-title {
            font-weight: 700;
            margin-bottom: 4px;
        }

        .intro-feature-item .ft-desc {
            font-size: 0.9rem;
            color: var(--text-light);
        }

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

        .feature-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
            opacity: 0;
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

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

        .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(79, 70, 229, 0.12), rgba(79, 70, 229, 0.06));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
        }

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

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

        .cat-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .cat-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.05);
            transition: var(--transition);
        }

        .cat-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .cat-card-img {
            position: relative;
            height: 180px;
            overflow: hidden;
        }

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

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

        .cat-card-body {
            padding: 24px;
        }

        .cat-card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .cat-card-body p {
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }

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

        .cat-link i {
            transition: var(--transition);
        }

        .cat-link:hover i {
            transform: translateX(4px);
        }

        .news-section {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .news-list {
            display: grid;
            gap: 20px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: 24px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            transition: var(--transition);
        }

        .news-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
            transform: translateX(6px);
        }

        .news-cat {
            flex-shrink: 0;
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary);
            font-size: 0.82rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
        }

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

        .news-info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .news-info p {
            font-size: 0.88rem;
            color: var(--text-light);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .news-date {
            flex-shrink: 0;
            font-size: 0.85rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .empty-tip {
            text-align: center;
            padding: 40px;
            color: var(--text-light);
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }

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

        .flow-section .section-tag {
            background: rgba(245, 158, 11, 0.15);
            color: #fcd34d;
        }

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

        .flow-section .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }

        .flow-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-top: 20px;
        }

        .flow-step {
            text-align: center;
            padding: 32px 24px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            transition: var(--transition);
            position: relative;
        }

        .flow-step:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }

        .flow-number {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: var(--accent);
            color: #1e293b;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .flow-step p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
        }

        .faq-grid {
            max-width: 900px;
            margin: 0 auto;
            display: grid;
            gap: 16px;
        }

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

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

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            gap: 16px;
        }

        .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }

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

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            color: var(--text-light);
            line-height: 1.8;
            font-size: 0.95rem;
        }

        .faq-item.active .faq-answer {
            max-height: 240px;
            padding-bottom: 20px;
        }

        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, #312e81 100%);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
        }

        .cta-inner {
            text-align: center;
            color: #fff;
            position: relative;
            z-index: 2;
        }

        .cta-inner h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-inner p {
            font-size: 1.1rem;
            opacity: 0.9;
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-cta-white {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            padding: 14px 36px;
            border-radius: 50px;
            font-size: 1rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
            transition: var(--transition);
        }

        .btn-cta-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.22);
        }

        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 30px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 60px;
            margin-bottom: 48px;
        }

        .footer-brand .logo-txt {
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 340px;
        }

        .footer-col h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: #fcd34d;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }

        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-title {
                font-size: 2.6rem;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .hero-section {
                padding: 80px 0 70px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-subtitle {
                font-size: 1.05rem;
            }
            .hero-stats {
                gap: 24px;
                margin-top: 40px;
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .cat-grid {
                grid-template-columns: 1fr;
            }
            .flow-grid {
                grid-template-columns: 1fr;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .news-item {
                flex-wrap: wrap;
                gap: 12px;
            }
            .news-info h4,
            .news-info p {
                white-space: normal;
            }
            .cta-inner h2 {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-inner {
                height: 64px;
            }
            .logo-txt {
                font-size: 1.1rem;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline-light {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                justify-content: space-around;
            }
        }

        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

/* roulang page: category1 */
:root {
            --primary: #4f46e5;
            --primary-dark: #3730a3;
            --accent: #06b6d4;
            --dark: #0f172a;
            --dark-2: #1e293b;
            --text: #1e293b;
            --text-light: #64748b;
            --bg: #f1f5f9;
            --card: #ffffff;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.16);
            --transition: all 0.3s ease;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body { font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif; background: var(--bg); color: var(--text); line-height: 1.7; -webkit-font-smoothing: antialiased; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

        /* ===== Header ===== */
        .site-header { position: sticky; top: 0; z-index: 100; background: rgba(15, 23, 42, 0.96); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(255,255,255,0.07); }
        .header-inner { display: flex; align-items: center; justify-content: space-between; height: 74px; gap: 24px; }
        .logo-txt { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: #fff; text-decoration: none; letter-spacing: 0.01em; white-space: nowrap; }
        .logo-txt i { color: var(--accent); font-size: 24px; }
        .main-nav { display: flex; align-items: center; gap: 6px; }
        .main-nav a { color: rgba(255,255,255,0.72); text-decoration: none; font-size: 15px; font-weight: 500; padding: 8px 15px; border-radius: 10px; transition: var(--transition); }
        .main-nav a:hover { color: #fff; background: rgba(255,255,255,0.08); }
        .main-nav a.active { color: #fff; background: rgba(79, 70, 229, 0.35); box-shadow: inset 0 0 0 1px rgba(99,102,241,0.25); }
        .main-nav .nav-cta { display: flex; align-items: center; gap: 8px; background: linear-gradient(135deg, #4f46e5, #7c3aed); color: #fff; padding: 10px 20px; border-radius: 12px; font-weight: 600; box-shadow: 0 4px 14px rgba(79,70,229,0.35); margin-left: 6px; }
        .main-nav .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(79,70,229,0.45); background: linear-gradient(135deg, #4338ca, #6d28d9); color: #fff; }
        .nav-toggle { display: none; background: none; border: 0; color: #fff; font-size: 22px; cursor: pointer; padding: 8px; border-radius: 8px; transition: var(--transition); }
        .nav-toggle:hover { background: rgba(255,255,255,0.1); }

        /* ===== Hero ===== */
        .page-hero { position: relative; padding: 110px 0 90px; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; }
        .page-hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(112deg, rgba(15,23,42,0.95) 0%, rgba(55,48,163,0.82) 48%, rgba(6,182,212,0.55) 100%); }
        .page-hero-content { position: relative; z-index: 2; max-width: 780px; }
        .page-hero .hero-tag { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.2); color: #c7d2fe; padding: 6px 16px; border-radius: 30px; font-size: 13px; font-weight: 500; margin-bottom: 20px; }
        .page-hero h1 { font-size: 48px; font-weight: 800; color: #fff; line-height: 1.2; margin-bottom: 16px; letter-spacing: -0.02em; }
        .page-hero p { font-size: 18px; color: rgba(255,255,255,0.82); line-height: 1.8; margin-bottom: 28px; max-width: 640px; }
        .hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
        .btn { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; border-radius: 12px; padding: 13px 28px; font-size: 15px; cursor: pointer; transition: var(--transition); text-decoration: none; border: 0; }
        .btn-primary { background: linear-gradient(135deg, #4f46e5, #7c3aed); color: #fff; box-shadow: 0 6px 20px rgba(79,70,229,0.4); }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(79,70,229,0.5); }
        .btn-glass { background: rgba(255,255,255,0.14); color: #fff; border: 1px solid rgba(255,255,255,0.28); backdrop-filter: blur(4px); }
        .btn-glass:hover { background: rgba(255,255,255,0.22); transform: translateY(-2px); }

        /* ===== Section Common ===== */
        .section-block { padding: 80px 0; }
        .section-block.alt { background: #fff; }
        .section-head { text-align: center; max-width: 640px; margin: 0 auto 52px; }
        .section-tag { display: inline-flex; align-items: center; gap: 6px; background: rgba(79,70,229,0.1); color: var(--primary); font-size: 13px; font-weight: 600; padding: 5px 16px; border-radius: 30px; margin-bottom: 14px; letter-spacing: 0.03em; }
        .section-head h2 { font-size: 34px; font-weight: 800; color: var(--dark); line-height: 1.25; letter-spacing: -0.01em; margin-bottom: 12px; }
        .section-head p { color: var(--text-light); font-size: 16px; }

        /* ===== Entry Cards ===== */
        .entry-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .entry-card { background: #fff; border-radius: var(--radius); padding: 32px 24px; box-shadow: var(--shadow); border: 1px solid rgba(226,232,240,0.7); transition: var(--transition); position: relative; overflow: hidden; }
        .entry-card::after { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 3px; background: linear-gradient(90deg, var(--primary), var(--accent)); opacity: 0; transition: var(--transition); }
        .entry-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
        .entry-card:hover::after { opacity: 1; }
        .entry-icon { width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 24px; color: #fff; margin-bottom: 20px; background: linear-gradient(135deg, #4f46e5, #06b6d4); }
        .entry-icon.icon-purple { background: linear-gradient(135deg, #7c3aed, #6366f1); }
        .entry-icon.icon-cyan { background: linear-gradient(135deg, #06b6d4, #0ea5e9); }
        .entry-icon.icon-amber { background: linear-gradient(135deg, #f59e0b, #f97316); }
        .entry-card h3 { font-size: 18px; font-weight: 700; color: var(--dark); margin-bottom: 10px; }
        .entry-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }
        .entry-card .entry-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-size: 14px; font-weight: 600; color: var(--primary); text-decoration: none; transition: var(--transition); }
        .entry-card .entry-link:hover { color: var(--primary-dark); gap: 10px; }

        /* ===== Flow Steps ===== */
        .flow-section { background: linear-gradient(160deg, #0f172a 0%, #1e293b 100%); position: relative; overflow: hidden; }
        .flow-section .section-head h2 { color: #fff; }
        .flow-section .section-head p { color: rgba(255,255,255,0.65); }
        .flow-section .section-tag { background: rgba(255,255,255,0.12); color: #a5b4fc; }
        .flow-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
        .flow-step { background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius); padding: 30px 26px; transition: var(--transition); backdrop-filter: blur(6px); }
        .flow-step:hover { background: rgba(255,255,255,0.1); transform: translateY(-4px); }
        .flow-num { font-size: 34px; font-weight: 800; color: rgba(255,255,255,0.14); line-height: 1; margin-bottom: 14px; font-family: 'Inter', monospace; }
        .flow-step h3 { font-size: 17px; color: #fff; font-weight: 700; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
        .flow-step h3 i { color: var(--accent); font-size: 18px; }
        .flow-step p { font-size: 14px; color: rgba(255,255,255,0.62); line-height: 1.7; }

        /* ===== Guide Rows ===== */
        .guide-wrap { display: flex; flex-direction: column; gap: 60px; }
        .guide-row { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
        .guide-row.reverse .guide-img { order: 2; }
        .guide-img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); position: relative; }
        .guide-img img { width: 100%; height: 300px; object-fit: cover; display: block; transition: transform 0.5s ease; }
        .guide-img:hover img { transform: scale(1.04); }
        .guide-img::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 60%, rgba(15,23,42,0.25) 100%); }
        .guide-text .guide-badge { display: inline-block; background: rgba(79,70,229,0.1); color: var(--primary); font-size: 12px; font-weight: 600; padding: 4px 12px; border-radius: 30px; margin-bottom: 16px; }
        .guide-text h3 { font-size: 24px; font-weight: 800; color: var(--dark); margin-bottom: 14px; line-height: 1.4; }
        .guide-text p { font-size: 15px; color: var(--text-light); line-height: 1.85; margin-bottom: 18px; }
        .guide-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
        .guide-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--text); }
        .guide-list li i { color: var(--primary); margin-top: 4px; font-size: 14px; flex-shrink: 0; }

        /* ===== Article Cards ===== */
        .article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .article-card { background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid rgba(226,232,240,0.6); transition: var(--transition); display: flex; flex-direction: column; }
        .article-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
        .article-cover { position: relative; height: 190px; overflow: hidden; }
        .article-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
        .article-card:hover .article-cover img { transform: scale(1.05); }
        .article-cover .article-tag { position: absolute; top: 14px; left: 14px; background: rgba(15,23,42,0.7); backdrop-filter: blur(4px); color: #fff; font-size: 12px; font-weight: 500; padding: 4px 12px; border-radius: 20px; }
        .article-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
        .article-body h3 { font-size: 17px; font-weight: 700; color: var(--dark); line-height: 1.5; margin-bottom: 10px; }
        .article-body h3 a { color: inherit; text-decoration: none; transition: var(--transition); }
        .article-body h3 a:hover { color: var(--primary); }
        .article-body p { font-size: 14px; color: var(--text-light); line-height: 1.7; flex: 1; margin-bottom: 16px; }
        .article-meta { display: flex; justify-content: space-between; font-size: 13px; color: #94a3b8; border-top: 1px solid var(--border); padding-top: 14px; }
        .article-meta .meta-item { display: flex; align-items: center; gap: 6px; }

        /* ===== Security ===== */
        .security-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .security-card { text-align: center; padding: 36px 20px; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid rgba(226,232,240,0.6); transition: var(--transition); }
        .security-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
        .security-card .sec-icon { width: 56px; height: 56px; border-radius: 50%; margin: 0 auto 18px; display: flex; align-items: center; justify-content: center; font-size: 22px; background: rgba(79,70,229,0.08); color: var(--primary); }
        .security-card h3 { font-size: 16px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
        .security-card p { font-size: 13px; color: var(--text-light); line-height: 1.7; }

        /* ===== FAQ ===== */
        .faq-wrap { max-width: 820px; margin: 0 auto; }
        .faq-item { background: #fff; border-radius: 14px; box-shadow: var(--shadow); border: 1px solid rgba(226,232,240,0.7); margin-bottom: 16px; overflow: hidden; transition: var(--transition); }
        .faq-item.open { box-shadow: var(--shadow-lg); }
        .faq-question { width: 100%; text-align: left; background: none; border: 0; padding: 22px 28px; display: flex; justify-content: space-between; align-items: center; cursor: pointer; font-size: 16px; font-weight: 600; color: var(--dark); transition: var(--transition); }
        .faq-question:hover { color: var(--primary); }
        .faq-question .faq-icon { width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; background: rgba(79,70,229,0.08); color: var(--primary); font-size: 12px; transition: var(--transition); flex-shrink: 0; }
        .faq-item.open .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
        .faq-answer-inner { padding: 0 28px 22px; font-size: 14px; color: var(--text-light); line-height: 1.8; border-top: 0; }

        /* ===== CTA ===== */
        .cta-section { padding: 80px 0; }
        .cta-box { background: linear-gradient(135deg, #1e293b, #0f172a); border-radius: 24px; padding: 60px 48px; text-align: center; position: relative; overflow: hidden; }
        .cta-box::before { content: ''; position: absolute; width: 300px; height: 300px; background: radial-gradient(circle, rgba(79,70,229,0.3), transparent 70%); top: -80px; right: -80px; }
        .cta-box::after { content: ''; position: absolute; width: 260px; height: 260px; background: radial-gradient(circle, rgba(6,182,212,0.22), transparent 70%); bottom: -70px; left: -70px; }
        .cta-box h2 { font-size: 32px; font-weight: 800; color: #fff; margin-bottom: 14px; position: relative; z-index: 1; }
        .cta-box p { font-size: 16px; color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto 28px; line-height: 1.8; position: relative; z-index: 1; }

        /* ===== Footer ===== */
        .site-footer { background: #0f172a; color: #94a3b8; padding-top: 64px; }
        .footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 48px; padding-bottom: 44px; border-bottom: 1px solid rgba(255,255,255,0.08); }
        .footer-brand .logo-txt { margin-bottom: 16px; }
        .footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.5); max-width: 360px; }
        .footer-col h5 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 18px; }
        .footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
        .footer-col ul a { color: rgba(255,255,255,0.55); text-decoration: none; font-size: 14px; transition: var(--transition); display: inline-flex; align-items: center; gap: 6px; }
        .footer-col ul a:hover { color: #fff; padding-left: 4px; }
        .footer-bottom { display: flex; justify-content: space-between; align-items: center; padding: 24px 0; font-size: 13px; color: rgba(255,255,255,0.35); flex-wrap: wrap; gap: 10px; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .entry-grid, .flow-grid, .security-grid { grid-template-columns: repeat(2, 1fr); }
            .article-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .main-nav { display: none; position: absolute; top: 74px; left: 0; right: 0; flex-direction: column; align-items: stretch; background: rgba(15,23,42,0.98); padding: 16px 24px 24px; gap: 8px; border-bottom: 1px solid rgba(255,255,255,0.07); box-shadow: 0 20px 40px rgba(0,0,0,0.3); }
            .main-nav.open { display: flex; }
            .main-nav a { padding: 12px 16px; font-size: 15px; border-radius: 10px; }
            .main-nav .nav-cta { margin: 8px 0 0; justify-content: center; }
            .nav-toggle { display: block; }
            .page-hero { padding: 70px 0 60px; }
            .page-hero h1 { font-size: 32px; }
            .page-hero p { font-size: 16px; }
            .guide-row { grid-template-columns: 1fr; gap: 28px; }
            .guide-row.reverse .guide-img { order: 0; }
            .footer-top { grid-template-columns: 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .section-block { padding: 56px 0; }
            .cta-box { padding: 40px 24px; }
        }
        @media (max-width: 520px) {
            .entry-grid, .flow-grid, .security-grid { grid-template-columns: 1fr; }
            .article-grid { grid-template-columns: 1fr; }
            .logo-txt { font-size: 17px; }
            .logo-txt i { font-size: 20px; }
            .page-hero h1 { font-size: 27px; }
            .section-head h2 { font-size: 26px; }
            .hero-actions { flex-direction: column; width: 100%; }
            .hero-actions .btn { justify-content: center; width: 100%; }
            .site-footer { padding-top: 44px; }
        }

/* roulang page: article */
:root {
    --primary: #1e2a4a;
    --primary-dark: #141d36;
    --primary-light: #2d3f6e;
    --accent: #ffb800;
    --accent-hover: #e6a600;
    --bg-light: #f4f7fb;
    --white: #ffffff;
    --text-main: #1e293b;
    --text-muted: #5a6b85;
    --text-soft: #8496b0;
    --border: #e3eaf2;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow-sm: 0 2px 8px rgba(30,42,74,0.06);
    --shadow-md: 0 8px 30px rgba(30,42,74,0.10);
    --shadow-lg: 0 20px 50px rgba(30,42,74,0.16);
    --transition: all 0.3s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: "PingFang SC", "Microsoft YaHei", ui-sans-serif, system-ui, -apple-system, sans-serif;
    background: var(--bg-light);
    color: var(--text-main);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea { font-family: inherit; }
::selection { background: rgba(255,184,0,0.25); color: var(--primary-dark); }
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg-light); }
::-webkit-scrollbar-thumb { background: #c3cfdd; border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: #a8b8cc; }

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 20px rgba(30,42,74,0.05);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.logo-txt {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 0.5px;
    white-space: nowrap;
}
.logo-txt i { font-size: 26px; color: var(--accent); }

.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 16px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    transition: var(--transition);
}
.main-nav a:hover { color: var(--primary); background: rgba(30,42,74,0.05); }
.main-nav a.active { color: var(--primary); background: rgba(30,42,74,0.08); }
.main-nav a.nav-cta {
    background: var(--accent);
    color: var(--primary-dark);
    padding: 9px 20px;
    border-radius: 50px;
    font-weight: 700;
    box-shadow: 0 4px 14px rgba(255,184,0,0.35);
    margin-left: 8px;
}
.main-nav a.nav-cta:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(255,184,0,0.45);
    color: var(--primary-dark);
}
.nav-toggle { display: none; font-size: 24px; color: var(--primary); padding: 8px; border-radius: 8px; }
.nav-toggle:hover { background: rgba(30,42,74,0.06); }

.article-hero {
    background-image: linear-gradient(120deg, rgba(20,29,54,0.92), rgba(30,42,74,0.82)), url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    padding: 80px 0 72px;
    color: #fff;
    position: relative;
}
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: rgba(255,255,255,0.7); margin-bottom: 20px; flex-wrap: wrap; }
.breadcrumb a { color: rgba(255,255,255,0.7); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb i { font-size: 11px; color: rgba(255,255,255,0.4); }
.breadcrumb .current { color: rgba(255,255,255,0.9); }
.article-hero-content { max-width: 860px; }
.cat-tag { display: inline-block; background: var(--accent); color: var(--primary-dark); font-size: 12px; font-weight: 800; padding: 5px 16px; border-radius: 50px; letter-spacing: 0.5px; margin-bottom: 16px; }
.article-hero h1 { font-size: 36px; font-weight: 800; line-height: 1.3; margin-bottom: 16px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 16px; font-size: 14px; color: rgba(255,255,255,0.75); margin-bottom: 18px; }
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-hero .article-desc { font-size: 16px; color: rgba(255,255,255,0.85); max-width: 720px; line-height: 1.8; }

.article-body-section { padding: 72px 0; }
.article-layout { display: grid; grid-template-columns: 1fr 360px; gap: 48px; align-items: start; }
.article-main .card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm); overflow: hidden; }
.article-content { padding: 40px; font-size: 16px; line-height: 1.9; color: #2d3a4e; }
.article-content h1, .article-content h2, .article-content h3 { color: var(--primary); line-height: 1.4; margin: 28px 0 14px; }
.article-content h2 { font-size: 28px; }
.article-content h3 { font-size: 22px; }
.article-content p { margin-bottom: 18px; }
.article-content ul, .article-content ol { margin: 0 0 18px 24px; list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: 6px; }
.article-content img { border-radius: 12px; margin: 20px 0; }
.article-content blockquote { border-left: 4px solid var(--accent); background: #fbf7ec; padding: 14px 20px; margin: 20px 0; border-radius: 0 10px 10px 0; color: #7a6a3d; }
.article-content a { color: var(--primary); font-weight: 600; border-bottom: 1px solid rgba(30,42,74,0.2); }
.article-content a:hover { color: var(--accent-hover); border-color: var(--accent); }
.article-footer { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; padding: 24px 40px; border-top: 1px solid var(--border); }
.article-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag { display: inline-block; background: var(--bg-light); border: 1px solid var(--border); border-radius: 50px; padding: 5px 14px; font-size: 13px; color: var(--text-muted); }

.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 24px; border-radius: 50px; font-size: 15px; font-weight: 700; transition: var(--transition); }
.btn-primary { background: var(--accent); color: var(--primary-dark); box-shadow: 0 6px 18px rgba(255,184,0,0.35); }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255,184,0,0.45); }
.btn-outline { border: 1.5px solid var(--primary-light); color: var(--primary); }
.btn-outline:hover { background: rgba(30,42,74,0.06); transform: translateY(-2px); }
.btn-ghost-light { border: 1.5px solid rgba(255,255,255,0.7); color: #fff; }
.btn-ghost-light:hover { background: rgba(255,255,255,0.1); transform: translateY(-2px); }

.article-sidebar { display: flex; flex-direction: column; gap: 28px; }
.sidebar-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm); }
.sidebar-card .card-head { display: flex; align-items: center; gap: 10px; font-size: 16px; font-weight: 800; color: var(--primary); padding-bottom: 16px; margin-bottom: 16px; border-bottom: 1px solid var(--border); }
.sidebar-card .card-head i { color: var(--accent); }
.entry-box { background: linear-gradient(135deg, var(--primary), var(--primary-light)); border-radius: var(--radius-sm); padding: 22px; color: #fff; text-align: center; margin-bottom: 16px; }
.entry-box h4 { font-size: 18px; margin-bottom: 4px; }
.entry-box p { font-size: 13px; color: rgba(255,255,255,0.75); margin-bottom: 14px; }
.entry-box .btn-primary { width: 100%; justify-content: center; }
.sidebar-list li { padding: 12px 0; border-bottom: 1px dashed var(--border); }
.sidebar-list li:last-child { border-bottom: none; padding-bottom: 0; }
.sidebar-list li:first-child { padding-top: 0; }
.sidebar-list a { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.sidebar-list a:hover { color: var(--primary); }
.sidebar-list a:hover .arrow { transform: translateX(4px); color: var(--accent); }
.sidebar-list .arrow { transition: var(--transition); color: var(--text-soft); }

.related-section { padding: 0 0 72px; }
.section-title { display: flex; align-items: center; justify-content: space-between; margin-bottom: 32px; }
.section-title h2 { font-size: 30px; font-weight: 800; color: var(--primary); position: relative; padding-left: 18px; }
.section-title h2::before { content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 6px; height: 28px; background: var(--accent); border-radius: 4px; }
.section-link { font-size: 14px; color: var(--text-muted); font-weight: 600; }
.section-link:hover { color: var(--primary); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.rel-card { background: #fff; border-radius: var(--radius); border: 1px solid var(--border); overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); }
.rel-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(30,42,74,0.15); }
.rel-card .cover { height: 180px; overflow: hidden; position: relative; }
.rel-card .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.rel-card:hover .cover img { transform: scale(1.05); }
.rel-card .card-body { padding: 22px; }
.rel-card .card-body h3 { font-size: 17px; font-weight: 700; color: var(--text-main); margin-bottom: 8px; line-height: 1.5; }
.rel-card .card-body h3 a:hover { color: var(--primary); }
.rel-card .card-body p { font-size: 13px; color: var(--text-muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.rel-card .card-foot { display: flex; align-items: center; gap: 8px; padding: 16px 22px; border-top: 1px solid var(--border); font-size: 13px; color: var(--text-soft); }
.rel-card .card-foot i { color: var(--accent); }

.faq-section { padding: 72px 0; background: linear-gradient(180deg, #fff, var(--bg-light)); }
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; max-width: 960px; margin: 0 auto; }
.faq-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; transition: var(--transition); }
.faq-item:hover { box-shadow: var(--shadow-md); border-color: rgba(30,42,74,0.15); }
.faq-item .q { display: flex; align-items: flex-start; gap: 10px; font-size: 15px; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.faq-item .q i { color: var(--accent); margin-top: 4px; }
.faq-item .a { font-size: 14px; color: var(--text-muted); padding-left: 24px; }

.cta-section { padding: 80px 0; background-image: linear-gradient(120deg, rgba(20,29,54,0.92), rgba(30,42,74,0.85)), url('/assets/images/backpic/back-3.png'); background-size: cover; background-position: center; text-align: center; color: #fff; }
.cta-section h2 { font-size: 34px; font-weight: 800; margin-bottom: 14px; }
.cta-section p { font-size: 16px; color: rgba(255,255,255,0.8); max-width: 600px; margin: 0 auto 28px; }
.cta-btns { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

.not-found-section { padding: 100px 0; min-height: 50vh; display: flex; align-items: center; justify-content: center; text-align: center; }
.not-found-box { max-width: 480px; }
.not-found-box i { font-size: 64px; color: var(--accent); margin-bottom: 20px; display: block; }
.not-found-box h1 { font-size: 28px; color: var(--primary); margin-bottom: 12px; }
.not-found-box p { color: var(--text-muted); margin-bottom: 24px; }

.site-footer { background: var(--primary-dark); color: rgba(255,255,255,0.8); padding: 64px 0 0; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 48px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-brand .logo-txt { color: #fff; font-size: 20px; }
.footer-brand .logo-txt i { color: var(--accent); }
.footer-brand p { font-size: 14px; color: rgba(255,255,255,0.6); margin-top: 16px; line-height: 1.8; max-width: 360px; }
.footer-col h5 { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { font-size: 14px; color: rgba(255,255,255,0.6); transition: var(--transition); }
.footer-col ul a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding: 20px 0; font-size: 13px; color: rgba(255,255,255,0.45); }

.btn:focus-visible, .main-nav a:focus-visible {
    outline: 3px solid rgba(255,184,0,0.5);
    outline-offset: 2px;
}

@media (max-width: 1024px) {
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; align-items: start; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .header-inner { height: 64px; }
    .nav-toggle { display: block; }
    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        padding: 16px 20px;
        gap: 4px;
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid var(--border);
        display: none;
        border-radius: 0 0 16px 16px;
    }
    .main-nav.nav-open { display: flex; }
    .main-nav a { padding: 12px 16px; border-radius: 10px; }
    .main-nav a.nav-cta { margin-left: 0; justify-content: center; }
    .article-hero { padding: 56px 0 48px; }
    .article-hero h1 { font-size: 28px; }
    .article-content { padding: 24px; }
    .article-footer { padding: 20px 24px; }
    .related-grid { grid-template-columns: 1fr; }
    .faq-grid { grid-template-columns: 1fr; }
    .footer-top { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
    .article-sidebar { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .article-layout { gap: 32px; }
    .article-hero h1 { font-size: 22px; }
    .section-title h2 { font-size: 24px; }
    .cta-section h2 { font-size: 26px; }
    .logo-txt { font-size: 16px; }
    .logo-txt i { font-size: 20px; }
}

/* roulang page: category3 */
/*========== 设计变量与基础重置 ==========*/
        :root {
            --primary: #4f46e5;
            --primary-dark: #3730a3;
            --primary-light: #818cf8;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg-dark: #0b1020;
            --bg-deep: #070c18;
            --bg-card: #131a2e;
            --bg-light: #f8fafc;
            --text-main: #e2e8f0;
            --text-strong: #f8fafc;
            --text-muted: #94a3b8;
            --border-color: rgba(148, 163, 184, 0.16);
            --radius-lg: 18px;
            --radius-md: 12px;
            --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 18px 50px rgba(79, 70, 229, 0.28);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            text-decoration: none;
            color: inherit;
        }

        ul, ol {
            list-style: none;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }

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

        ::selection {
            background: rgba(79, 70, 229, 0.6);
            color: #fff;
        }

        /*========== 容器与通用布局 ==========*/
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding-top: 96px;
            padding-bottom: 96px;
            position: relative;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 50px;
            background: rgba(79, 70, 229, 0.12);
            border: 1px solid rgba(79, 70, 229, 0.35);
            color: var(--primary-light);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 800;
            color: var(--text-strong);
            line-height: 1.25;
            margin-bottom: 16px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 640px;
            line-height: 1.8;
        }

        .text-gradient {
            background: linear-gradient(135deg, #818cf8 0%, #c7d2fe 50%, #fbbf24 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.3px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
            color: #fff;
            box-shadow: 0 8px 30px rgba(79, 70, 229, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 40px rgba(79, 70, 229, 0.5);
        }

        .btn-outline {
            background: transparent;
            border: 1.5px solid rgba(148, 163, 184, 0.4);
            color: var(--text-strong);
        }

        .btn-outline:hover {
            border-color: var(--primary-light);
            background: rgba(79, 70, 229, 0.1);
            transform: translateY(-3px);
        }

        .btn-accent {
            background: linear-gradient(135deg, #f59e0b, #fbbf24);
            color: #1e1b4b;
            box-shadow: 0 8px 26px rgba(245, 158, 11, 0.3);
        }

        .btn-accent:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 36px rgba(245, 158, 11, 0.42);
        }

        /*========== 导航 ==========*/
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(11, 16, 32, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(7, 12, 24, 0.95);
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }

        .logo-txt {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 19px;
            font-weight: 800;
            color: var(--text-strong);
            letter-spacing: 0.3px;
            transition: var(--transition);
        }

        .logo-txt i {
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: linear-gradient(135deg, #4f46e5, #7c3aed);
            color: #fff;
            font-size: 18px;
            box-shadow: 0 6px 18px rgba(79, 70, 229, 0.4);
        }

        .logo-txt:hover {
            opacity: 0.9;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .main-nav a {
            position: relative;
            padding: 10px 18px;
            border-radius: 10px;
            font-size: 14.5px;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .main-nav a:hover {
            color: var(--text-strong);
            background: rgba(79, 70, 229, 0.1);
        }

        .main-nav a.active {
            color: var(--text-strong);
            background: rgba(79, 70, 229, 0.16);
        }

        .main-nav a.active::after {
            content: "";
            position: absolute;
            bottom: 5px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2.5px;
            border-radius: 4px;
            background: linear-gradient(90deg, #818cf8, #fbbf24);
        }

        .main-nav a.nav-cta {
            margin-left: 12px;
            padding: 11px 24px;
            background: linear-gradient(135deg, #f59e0b, #fbbf24);
            color: #1e1b4b;
            font-weight: 700;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.28);
            transition: var(--transition);
        }

        .main-nav a.nav-cta:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 10px 32px rgba(245, 158, 11, 0.4);
            background: linear-gradient(135deg, #f59e0b, #fde68a);
        }

        .main-nav a.nav-cta i {
            margin-right: 6px;
        }

        .mobile-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            color: var(--text-strong);
            font-size: 20px;
            transition: var(--transition);
        }

        .mobile-toggle:hover {
            background: rgba(79, 70, 229, 0.12);
        }

        @media (max-width: 1024px) {
            .main-nav {
                position: fixed;
                top: 76px;
                right: 0;
                width: 300px;
                height: calc(100vh - 76px);
                background: rgba(7, 12, 24, 0.98);
                backdrop-filter: blur(24px);
                flex-direction: column;
                align-items: stretch;
                justify-content: flex-start;
                gap: 4px;
                padding: 24px 20px;
                transform: translateX(110%);
                transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                box-shadow: -18px 0 60px rgba(0, 0, 0, 0.5);
                border-left: 1px solid var(--border-color);
                overflow-y: auto;
            }

            .main-nav.open {
                transform: translateX(0);
            }

            .main-nav a {
                padding: 14px 16px;
                font-size: 15px;
                border-radius: 10px;
                display: flex;
                align-items: center;
                gap: 10px;
            }

            .main-nav a.nav-cta {
                margin-left: 0;
                margin-top: 16px;
                justify-content: center;
                padding: 14px 20px;
            }

            .mobile-toggle {
                display: flex;
            }
        }

        /*========== Hero / Banner ==========*/
        .page-hero {
            position: relative;
            padding: 170px 0 110px;
            background: linear-gradient(180deg, rgba(7, 12, 24, 0.9) 0%, rgba(11, 16, 32, 0.75) 60%, #0b1020 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-bottom: 1px solid var(--border-color);
        }

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

        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            border-radius: 50px;
            background: rgba(79, 70, 229, 0.14);
            border: 1px solid rgba(129, 140, 248, 0.4);
            color: #a5b4fc;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }

        .page-hero h1 {
            font-size: clamp(34px, 5.5vw, 58px);
            font-weight: 900;
            color: #fff;
            line-height: 1.18;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
        }

        .page-hero p {
            font-size: 17px;
            color: #c7d2fe;
            max-width: 620px;
            line-height: 1.8;
            margin-bottom: 36px;
        }

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

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-top: 60px;
            padding-top: 36px;
            border-top: 1px solid var(--border-color);
        }

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

        .hero-stats .stat-num {
            font-size: 30px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .hero-stats .stat-num span {
            font-size: 16px;
            font-weight: 600;
            color: var(--accent);
            margin-left: 4px;
        }

        .hero-stats .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /*========== 面包屑 ==========*/
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            padding: 14px 0 0;
            font-size: 13.5px;
            color: var(--text-muted);
        }

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

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

        .breadcrumb i {
            font-size: 10px;
            color: #64748b;
        }

        .breadcrumb .current {
            color: var(--text-strong);
            font-weight: 500;
        }

        /*========== 新手引导流程 ==========*/
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 50px;
        }

        .steps-card {
            position: relative;
            padding: 36px 26px 30px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 18px;
            transition: var(--transition);
            overflow: hidden;
        }

        .steps-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, #4f46e5, #818cf8, transparent);
            opacity: 0.7;
        }

        .steps-card:hover {
            transform: translateY(-8px);
            border-color: rgba(129, 140, 248, 0.45);
            box-shadow: var(--shadow-hover);
        }

        .steps-num {
            font-size: 44px;
            font-weight: 900;
            color: rgba(129, 140, 248, 0.16);
            line-height: 1;
            margin-bottom: 14px;
        }

        .steps-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 10px;
        }

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

        /*========== 分类卡片 ==========*/
        .game-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
        }

        .game-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(129, 140, 248, 0.4);
        }

        .game-card .card-img {
            position: relative;
            overflow: hidden;
            height: 190px;
        }

        .game-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .game-card .card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(7, 12, 24, 0.85) 100%);
        }

        .game-card .tag {
            position: absolute;
            z-index: 2;
            top: 16px;
            left: 16px;
            padding: 5px 14px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 50px;
            background: rgba(79, 70, 229, 0.9);
            color: #fff;
            backdrop-filter: blur(6px);
        }

        .game-card .card-body {
            padding: 24px 22px 26px;
        }

        .game-card .card-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 10px;
        }

        .game-card .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 18px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 16px;
            border-top: 1px solid var(--border-color);
        }

        .card-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 7px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .card-meta .meta-item i {
            color: var(--primary-light);
        }

        /*========== 技巧列表 ==========*/
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 50px;
        }

        .tip-card {
            display: flex;
            gap: 18px;
            padding: 28px 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            transition: var(--transition);
        }

        .tip-card:hover {
            border-color: rgba(129, 140, 248, 0.45);
            transform: translateX(6px);
            background: linear-gradient(135deg, rgba(79, 70, 229, 0.08), rgba(245, 158, 11, 0.04));
        }

        .tip-card .tip-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            font-size: 20px;
            background: rgba(79, 70, 229, 0.15);
            color: var(--primary-light);
            border: 1px solid rgba(79, 70, 229, 0.3);
        }

        .tip-card:nth-child(3n+1) .tip-icon {
            background: rgba(79, 70, 229, 0.15);
            color: #a5b4fc;
            border-color: rgba(79, 70, 229, 0.3);
        }

        .tip-card:nth-child(3n+2) .tip-icon {
            background: rgba(245, 158, 11, 0.12);
            color: #fbbf24;
            border-color: rgba(245, 158, 11, 0.3);
        }

        .tip-card:nth-child(3n+3) .tip-icon {
            background: rgba(16, 185, 129, 0.13);
            color: #34d399;
            border-color: rgba(16, 185, 129, 0.3);
        }

        .tip-card .content h3 {
            font-size: 16.5px;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 8px;
        }

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

        /*========== 资讯/文章区 ==========*/
        .article-list {
            margin-top: 46px;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .article-row {
            display: flex;
            align-items: center;
            gap: 24px;
            padding: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            transition: var(--transition);
        }

        .article-row:hover {
            border-color: rgba(129, 140, 248, 0.45);
            background: linear-gradient(135deg, rgba(79, 70, 229, 0.07), transparent);
            transform: translateX(4px);
        }

        .article-row .row-img {
            flex-shrink: 0;
            width: 190px;
            height: 120px;
            border-radius: 12px;
            overflow: hidden;
        }

        .article-row .row-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .article-row .row-body {
            flex: 1;
        }

        .article-row .row-body .tag-xs {
            display: inline-block;
            padding: 3px 12px;
            font-size: 11.5px;
            font-weight: 600;
            border-radius: 50px;
            background: rgba(245, 158, 11, 0.12);
            color: #fbbf24;
            margin-bottom: 8px;
        }

        .article-row .row-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 6px;
            transition: var(--transition);
        }

        .article-row:hover .row-body h3 {
            color: #a5b4fc;
        }

        .article-row .row-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-row .row-right {
            text-align: right;
            flex-shrink: 0;
        }

        .article-row .row-right .time {
            font-size: 13px;
            color: var(--text-muted);
            display: block;
            margin-bottom: 12px;
        }

        .article-row .row-right .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13.5px;
            font-weight: 600;
            color: var(--primary-light);
            transition: var(--transition);
        }

        .article-row .row-right .read-more:hover {
            gap: 12px;
            color: #fbbf24;
        }

        /*========== FAQ ==========*/
        .faq-wrap {
            max-width: 860px;
            margin: 50px auto 0;
        }

        .faq-item {
            margin-bottom: 14px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(129, 140, 248, 0.4);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 22px 26px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-strong);
            list-style: none;
            transition: var(--transition);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary .faq-icon {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(79, 70, 229, 0.15);
            border: 1px solid rgba(79, 70, 229, 0.3);
            color: var(--primary-light);
            transition: var(--transition);
        }

        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
            background: rgba(245, 158, 11, 0.15);
            border-color: rgba(245, 158, 11, 0.35);
            color: #fbbf24;
        }

        .faq-item .faq-answer {
            padding: 0 26px 24px;
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.85;
        }

        /*========== CTA 区域 ==========*/
        .cta-section {
            position: relative;
            background: linear-gradient(135deg, rgba(79, 70, 229, 0.14), rgba(245, 158, 11, 0.08)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 760px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 18px;
        }

        .cta-inner p {
            font-size: 16px;
            color: #c7d2fe;
            line-height: 1.8;
            margin-bottom: 36px;
        }

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

        /*========== 页脚 ==========*/
        .site-footer {
            background: var(--bg-deep);
            padding-top: 72px;
            border-top: 1px solid var(--border-color);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-brand .logo-txt {
            margin-bottom: 18px;
            font-size: 18px;
        }

        .footer-brand p {
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 420px;
        }

        .footer-col h5 {
            font-size: 15.5px;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

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

        .footer-col ul li a::before {
            content: "\f105";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 11px;
            color: var(--primary-light);
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--text-strong);
            padding-left: 5px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 24px 0;
            border-top: 1px solid var(--border-color);
            font-size: 13.5px;
            color: #64748b;
        }

        /*========== 响应式断点 ==========*/
        @media (max-width: 1024px) {
            .section {
                padding-top: 72px;
                padding-bottom: 72px;
            }

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

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

            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding-top: 56px;
                padding-bottom: 56px;
            }

            .page-hero {
                padding: 140px 0 76px;
            }

            .page-hero p {
                font-size: 15.5px;
            }

            .hero-stats {
                flex-direction: column;
                gap: 24px;
            }

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

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

            .article-row {
                flex-direction: column;
                align-items: flex-start;
            }

            .article-row .row-img {
                width: 100%;
                height: 180px;
            }

            .article-row .row-right {
                text-align: left;
                width: 100%;
                display: flex;
                align-items: center;
                justify-content: space-between;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }

            .page-hero h1 {
                font-size: 32px;
            }

            .hero-actions {
                flex-direction: column;
                width: 100%;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .steps-grid {
                gap: 18px;
            }

            .card-meta {
                flex-wrap: wrap;
                gap: 8px;
            }

            .cta-actions {
                flex-direction: column;
                width: 100%;
            }

            .cta-actions .btn {
                width: 100%;
            }

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

        /* 焦点可访问性 */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 6px;
        }

/* roulang page: category2 */
:root {
            --primary: #6366f1;
            --primary-dark: #4f46e5;
            --accent: #f59e0b;
            --ink: #0f172a;
            --muted: #64748b;
            --border: #e2e8f0;
            --surface: #f8fafc;
            --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.12);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --container: 1200px;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            color: var(--ink);
            background: #fff;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; transition: all .3s ease; }
        ul, ol { list-style: none; }
        button { border: none; background: none; cursor: pointer; font-family: inherit; }
        input, textarea { font-family: inherit; }

        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: #f1f5f9; }
        ::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 8px; }
        ::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

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

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow .3s ease;
        }
        .site-header.scrolled { box-shadow: var(--shadow-md); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .logo-txt {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 800;
            color: var(--ink);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        .logo-txt i { color: var(--primary); font-size: 24px; }
        .main-nav { display: flex; align-items: center; gap: 6px; }
        .main-nav a:not(.nav-cta) {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: var(--muted);
            line-height: 1.4;
        }
        .main-nav a:not(.nav-cta):hover { color: var(--primary); background: rgba(99, 102, 241, 0.08); }
        .main-nav a.active:not(.nav-cta) { color: var(--primary); background: rgba(99, 102, 241, 0.12); }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-left: 8px;
            padding: 10px 22px;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            box-shadow: 0 4px 16px rgba(79, 70, 229, 0.3);
            transition: transform .3s ease, box-shadow .3s ease;
        }
        .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(79, 70, 229, 0.42); }
        .nav-toggle { display: none; font-size: 22px; color: var(--ink); padding: 6px; border-radius: 8px; }
        .nav-toggle:hover { background: #f1f5f9; }
        .nav-toggle:focus, .main-nav a:focus, .btn:focus { outline: 2px solid rgba(99, 102, 241, 0.5); outline-offset: 2px; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 700;
            line-height: 1.4;
            transition: all .3s ease;
            border: 2px solid transparent;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 6px 20px rgba(79, 70, 229, 0.32);
        }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(79, 70, 229, 0.42); }
        .btn-outline { border-color: var(--border); color: var(--ink); background: #fff; }
        .btn-outline:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
        .btn-light { border-color: rgba(255, 255, 255, 0.35); color: #fff; background: rgba(255, 255, 255, 0.08); backdrop-filter: blur(6px); }
        .btn-light:hover { border-color: #fff; color: #fff; background: rgba(255, 255, 255, 0.18); }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            padding: 104px 0 96px;
            background-color: #0f172a;
            overflow: hidden;
            text-align: center;
        }
        .category-hero .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.4;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(15, 23, 42, 0.88) 0%, rgba(99, 102, 241, 0.55) 100%);
        }
        .category-hero .container { position: relative; z-index: 2; }
        .badge-chip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.22);
            color: #e0e7ff;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            backdrop-filter: blur(8px);
            margin-bottom: 24px;
        }
        .hero-title {
            font-size: clamp(30px, 5vw, 48px);
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
        }
        .hero-title .highlight {
            background: linear-gradient(90deg, #a5b4fc, #fbbf24);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-desc {
            font-size: 16px;
            color: rgba(226, 232, 240, 0.85);
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .hero-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

        /* ===== Section layout ===== */
        .section-white { background: #fff; }
        .section-gray { background: var(--surface); }
        .section-pad { padding: 72px 0; }

        .section-head { margin-bottom: 44px; max-width: 720px; }
        .section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-size: 13px;
            font-weight: 800;
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 4px;
        }
        .section-head.center .section-label::after {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 4px;
        }
        .section-title {
            font-size: clamp(24px, 3.2vw, 34px);
            font-weight: 800;
            line-height: 1.25;
            color: var(--ink);
            letter-spacing: -0.3px;
            margin-bottom: 12px;
        }
        .section-sub {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.8;
            max-width: 560px;
        }
        .section-head.center .section-sub { margin-left: auto; margin-right: auto; }

        /* ===== Cards ===== */
        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: transform .35s ease, box-shadow .35s ease;
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
        .feature-card .card-media { position: relative; overflow: hidden; aspect-ratio: 16 / 10; }
        .feature-card .card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
        .feature-card:hover .card-media img { transform: scale(1.05); }
        .feature-card .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            border-radius: 999px;
            background: rgba(15, 23, 42, 0.72);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            backdrop-filter: blur(6px);
            letter-spacing: 0.5px;
        }
        .feature-card .card-body { padding: 22px 22px 20px; display: flex; flex-direction: column; flex: 1; }
        .feature-card .card-title { font-size: 17px; font-weight: 700; line-height: 1.5; color: var(--ink); margin-bottom: 10px; }
        .feature-card .card-title a:hover { color: var(--primary); }
        .feature-card .card-text { font-size: 14px; color: var(--muted); line-height: 1.75; flex: 1; }
        .feature-card .card-link {
            margin-top: 16px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
        }
        .feature-card .card-link i { transition: transform .3s ease; }
        .feature-card .card-link:hover i { transform: translateX(4px); }

        /* ===== News cards ===== */
        .news-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: #c7d2fe; }
        .news-tag {
            display: inline-flex;
            align-self: flex-start;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .news-card h3 { font-size: 16px; font-weight: 700; line-height: 1.5; color: var(--ink); margin-bottom: 10px; }
        .news-card h3 a:hover { color: var(--primary); }
        .news-card p { font-size: 13.5px; color: var(--muted); line-height: 1.7; flex: 1; }
        .news-meta { display: flex; gap: 16px; margin-top: 16px; padding-top: 14px; border-top: 1px solid #f1f5f9; font-size: 12.5px; color: #94a3b8; }
        .news-meta span { display: inline-flex; align-items: center; gap: 5px; }
        .news-meta i { font-size: 13px; }

        /* ===== Split / feature list ===== */
        .cover-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .cover-wrap img { width: 100%; height: 100%; object-fit: cover; }
        .cover-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(15, 23, 42, 0.45));
            border-radius: inherit;
        }
        .feature-list { margin-top: 24px; display: grid; gap: 14px; }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 18px;
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            transition: background .3s ease, border-color .3s ease, transform .3s ease;
        }
        .feature-list li:hover { background: #fff; border-color: #c7d2fe; transform: translateX(4px); }
        .feature-list li i {
            flex-shrink: 0;
            width: 34px;
            height: 34px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 14px;
        }
        .feature-list li strong { display: block; font-size: 15px; font-weight: 700; color: var(--ink); }
        .feature-list li span { font-size: 13px; color: var(--muted); line-height: 1.6; }

        /* ===== Stats ===== */
        .stats-band {
            position: relative;
            background-color: #0f172a;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 72px 0;
        }
        .stats-band::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 23, 42, 0.9);
        }
        .stats-band .container { position: relative; z-index: 2; }
        .stat-item { padding: 20px 10px; }
        .stat-num {
            font-size: clamp(32px, 4vw, 44px);
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -1px;
            background: linear-gradient(90deg, #c7d2fe, #fbbf24);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .stat-label { font-size: 14px; color: rgba(203, 213, 225, 0.75); margin-top: 8px; letter-spacing: 1px; }

        /* ===== FAQ ===== */
        .faq-list { display: grid; gap: 14px; }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: box-shadow .3s ease, border-color .3s ease;
        }
        .faq-item.active { border-color: #c7d2fe; box-shadow: var(--shadow-md); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 20px 22px;
            text-align: left;
            font-size: 15.5px;
            font-weight: 700;
            color: var(--ink);
            transition: color .3s ease;
        }
        .faq-question:hover { color: var(--primary); }
        .faq-icon {
            flex-shrink: 0;
            width: 30px;
            height: 30px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 999px;
            background: var(--surface);
            color: var(--primary);
            font-size: 18px;
            font-weight: 400;
            border: 1px solid var(--border);
            transition: all .3s ease;
        }
        .faq-item.active .faq-icon { transform: rotate(180deg); background: var(--primary); color: #fff; border-color: var(--primary); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .35s ease; padding: 0 22px; }
        .faq-item.active .faq-answer { max-height: 200px; padding: 0 22px 20px; }
        .faq-answer p { font-size: 14px; color: var(--muted); line-height: 1.8; }

        /* ===== CTA ===== */
        .cta-band {
            position: relative;
            background-color: #0f172a;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            padding: 80px 0;
            overflow: hidden;
        }
        .cta-band::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(79, 70, 229, 0.88), rgba(15, 23, 42, 0.92));
        }
        .cta-inner { position: relative; z-index: 2; text-align: center; max-width: 640px; margin: 0 auto; }
        .cta-inner h2 { font-size: clamp(24px, 3.5vw, 34px); font-weight: 800; color: #fff; line-height: 1.3; margin-bottom: 14px; display: inline-flex; align-items: center; gap: 12px; }
        .cta-inner h2 i { color: #fbbf24; }
        .cta-inner p { font-size: 15px; color: rgba(226, 232, 240, 0.85); line-height: 1.8; margin-bottom: 30px; }
        .cta-actions { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }

        /* ===== Footer ===== */
        .site-footer { background: #0f172a; color: #94a3b8; padding-top: 64px; }
        .footer-top {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo-txt { color: #fff; font-size: 20px; }
        .footer-brand .logo-txt i { color: #818cf8; }
        .footer-brand p { margin-top: 16px; font-size: 14px; line-height: 1.8; color: #94a3b8; max-width: 340px; }
        .footer-col h5 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 20px; letter-spacing: 0.5px; }
        .footer-col ul li { margin-bottom: 12px; }
        .footer-col ul li a { font-size: 14px; color: #94a3b8; transition: color .3s ease; }
        .footer-col ul li a:hover { color: #a5b4fc; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            padding: 24px 0;
            font-size: 13px;
            color: #64748b;
        }
        .footer-bottom span { color: #64748b; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-top { grid-template-columns: 1fr 1fr; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 768px) {
            .nav-toggle { display: block; }
            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 16px 32px rgba(15, 23, 42, 0.12);
                transform: translateY(-130%);
                transition: transform .35s ease;
                pointer-events: none;
                visibility: hidden;
            }
            .main-nav.open { transform: translateY(0); pointer-events: auto; visibility: visible; }
            .main-nav a:not(.nav-cta) { width: 100%; padding: 11px 14px; border-radius: 10px; font-size: 15px; }
            .nav-cta { margin: 10px 0 0; justify-content: center; width: 100%; }
            .category-hero { padding: 80px 0 64px; }
            .hero-actions { flex-direction: column; align-items: center; }
            .btn { width: 100%; max-width: 280px; }
            .footer-top { grid-template-columns: 1fr; gap: 32px; }
            .footer-brand { grid-column: auto; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .logo-txt { font-size: 16px; }
            .logo-txt i { font-size: 20px; }
            .section-pad { padding: 56px 0; }
            .feature-card .card-body { padding: 18px; }
            .news-card { padding: 18px; }
            .faq-question { padding: 16px 16px; font-size: 14.5px; }
            .faq-item.active .faq-answer { padding: 0 16px 16px; }
        }