/* roulang page: index */
:root {
            --bg-deep: #0B132B;
            --bg-dark: #0F1D3A;
            --brand-blue: #2E7CF6;
            --brand-blue-dark: #1B5FDE;
            --brand-blue-light: #4A90FF;
            --accent-orange: #F5A623;
            --accent-orange-light: #FFB347;
            --text-light: #E8EDF5;
            --text-muted: #94A3B8;
            --text-dim: #64748B;
            --text-dark: #1E293B;
            --text-dark-muted: #64748B;
            --glass-bg: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.10);
            --glass-bg-hover: rgba(255, 255, 255, 0.10);
            --glass-border-hover: rgba(255, 255, 255, 0.20);
            --border-light: #E2E8F0;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.30);
            --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.40);
            --shadow-btn: 0 0 24px rgba(46, 124, 246, 0.40);
            --shadow-orange: 0 0 30px rgba(245, 166, 35, 0.25);
            --space-section: 90px;
            --space-section-mobile: 56px;
            --font-stack: "PingFang SC", "Microsoft YaHei", "HarmonicOS Sans", "Helvetica Neue", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-dark) 100%);
            color: var(--text-light);
            line-height: 1.7;
            letter-spacing: 0.02em;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease;
        }

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1140px;
        }

        /* 导航栏 */
        .site-header {
            background: #ffffff;
            min-height: 64px;
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
            padding-top: 0;
            padding-bottom: 0;
            z-index: 1030;
        }

        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding-top: 0;
            padding-bottom: 0;
            margin-right: 0;
        }

        .brand-icon {
            width: 32px;
            height: 32px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: 0.02em;
            line-height: 1.2;
        }

        .navbar-nav {
            gap: 4px;
            margin-left: auto;
            margin-right: auto;
        }

        .navbar-nav .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: #334155;
            padding: 18px 16px;
            border-bottom: 2px solid transparent;
            transition: color 0.2s ease, border-color 0.2s ease;
        }

        .navbar-nav .nav-link:hover {
            color: var(--brand-blue);
            border-bottom-color: var(--brand-blue);
        }

        .navbar-nav .nav-link.active {
            color: var(--brand-blue);
            border-bottom-color: var(--brand-blue);
            font-weight: 600;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .search-box {
            position: relative;
            width: 200px;
        }

        .search-box .bi-search {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-dim);
            font-size: 14px;
            pointer-events: none;
        }

        .search-box input {
            width: 100%;
            height: 36px;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-pill);
            background: #F8FAFC;
            padding: 0 14px 0 36px;
            font-size: 13px;
            color: var(--text-dark);
            outline: none;
            box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.03);
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .search-box input::placeholder {
            color: #94A3B8;
        }

        .search-box input:focus {
            border-color: var(--brand-blue);
            box-shadow: 0 0 0 4px rgba(46, 124, 246, 0.12);
        }

        .btn-cta {
            background: linear-gradient(135deg, var(--brand-blue) 0%, var(--brand-blue-dark) 100%);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            height: 38px;
            padding: 0 20px;
            border: none;
            border-radius: var(--radius-md);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 16px rgba(46, 124, 246, 0.25);
            transition: all 0.25s ease;
        }

        .btn-cta:hover {
            color: #fff;
            filter: brightness(1.08);
            box-shadow: 0 8px 24px rgba(46, 124, 246, 0.35);
            transform: translateY(-1px);
        }

        .btn-cta:active {
            transform: translateY(1px);
            box-shadow: 0 2px 8px rgba(46, 124, 246, 0.3);
        }

        .navbar-toggler {
            border: 1px solid var(--border-light);
            border-radius: 8px;
            padding: 6px 10px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(46, 124, 246, 0.15);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%231E293B' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        @media (max-width: 991.98px) {
            .site-header {
                min-height: 60px;
            }
            .navbar-collapse {
                background: #fff;
                padding: 16px 20px 20px;
                border-radius: 0 0 16px 16px;
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
            }
            .navbar-nav .nav-link {
                padding: 10px 0;
                border-bottom: none;
                border-left: 3px solid transparent;
                font-size: 15px;
            }
            .navbar-nav .nav-link:hover,
            .navbar-nav .nav-link.active {
                border-left-color: var(--brand-blue);
                border-bottom: none;
            }
            .header-actions {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
                margin-top: 12px;
            }
            .search-box {
                width: 100%;
            }
            .btn-cta {
                width: 100%;
                height: 40px;
            }
        }

        /* 首屏 Hero */
        .hero-section {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            padding: 80px 0 70px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(11, 19, 43, 0.94) 20%, rgba(11, 19, 43, 0.72) 55%, rgba(15, 29, 58, 0.35) 85%);
            z-index: 1;
        }

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

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(46, 124, 246, 0.15);
            border: 1px solid rgba(46, 124, 246, 0.35);
            color: var(--brand-blue-light);
            font-size: 13px;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            margin-bottom: 20px;
            letter-spacing: 0.04em;
        }

        .hero-title {
            font-size: 46px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .hero-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 36px;
        }

        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 50px;
        }

        .btn-primary-glow {
            background: linear-gradient(135deg, var(--brand-blue) 0%, var(--brand-blue-dark) 100%);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 14px 34px;
            border-radius: var(--radius-md);
            border: none;
            box-shadow: var(--shadow-btn);
            transition: all 0.25s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary-glow:hover {
            color: #fff;
            filter: brightness(1.1);
            box-shadow: 0 0 32px rgba(46, 124, 246, 0.55);
            transform: translateY(-2px);
        }

        .btn-primary-glow:active {
            transform: translateY(1px);
            box-shadow: 0 2px 12px rgba(46, 124, 246, 0.35);
        }

        .btn-glass {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            color: #E8EDF5;
            font-size: 15px;
            font-weight: 500;
            padding: 14px 30px;
            border-radius: var(--radius-md);
            transition: all 0.25s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-glass:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.5);
            color: #fff;
            transform: translateY(-2px);
        }

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

        .stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .stat-num {
            font-size: 36px;
            font-weight: 700;
            color: var(--brand-blue-light);
            font-feature-settings: "tnum";
            line-height: 1.2;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-muted);
        }

        @media (max-width: 767.98px) {
            .hero-section {
                min-height: 520px;
                padding: 60px 0 50px;
            }
            .hero-title {
                font-size: 30px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }
            .hero-buttons .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                gap: 24px 32px;
            }
            .stat-num {
                font-size: 28px;
            }
        }

        /* 通用板块 */
        .section {
            padding: var(--space-section) 0;
            position: relative;
        }

        .section-alt {
            background: rgba(11, 19, 43, 0.45);
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-orange);
            background: rgba(245, 166, 35, 0.10);
            border: 1px solid rgba(245, 166, 35, 0.25);
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: 14px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-light);
            line-height: 1.35;
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 580px;
            margin-bottom: 40px;
            line-height: 1.8;
        }

        @media (max-width: 767.98px) {
            .section {
                padding: var(--space-section-mobile) 0;
            }
            .section-title {
                font-size: 24px;
            }
            .section-desc {
                font-size: 14px;
            }
        }

        /* 痛点区 */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .pain-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 30px 28px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
        }

        .pain-card:hover {
            transform: translateY(-6px);
            background: var(--glass-bg-hover);
            border-color: var(--glass-border-hover);
            box-shadow: var(--shadow-card-hover);
        }

        .pain-icon {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: rgba(46, 124, 246, 0.12);
            color: var(--brand-blue-light);
            font-size: 20px;
            margin-bottom: 20px;
        }

        .pain-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 10px;
        }

        .pain-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 0;
        }

        @media (max-width: 991.98px) {
            .pain-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 767.98px) {
            .pain-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 解决方案区 */
        .solution-section {
            background: rgba(15, 29, 58, 0.35);
        }

        .solution-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            margin-bottom: 70px;
        }

        .solution-block:last-child {
            margin-bottom: 0;
        }

        .solution-media {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(46, 124, 246, 0.25);
            box-shadow: 0 0 0 1px rgba(46, 124, 246, 0.08), 0 24px 48px rgba(0, 0, 0, 0.35);
        }

        .solution-media img {
            width: 100%;
            display: block;
            aspect-ratio: 4/3;
            object-fit: cover;
        }

        .solution-media .media-number {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(11, 19, 43, 0.75);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--accent-orange);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.04em;
        }

        .solution-content .mini-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-orange);
            margin-bottom: 8px;
            letter-spacing: 0.03em;
        }

        .solution-content h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .solution-content p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.85;
            margin-bottom: 20px;
        }

        .solution-list {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
        }

        .solution-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #CBD5E1;
            padding: 5px 0;
        }

        .solution-list li::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--brand-blue) 0%, var(--accent-orange) 100%);
            flex-shrink: 0;
        }

        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-blue-light);
            transition: color 0.2s, gap 0.2s;
        }

        .text-link:hover {
            color: var(--accent-orange);
            gap: 10px;
        }

        .text-link .bi {
            font-size: 13px;
        }

        @media (max-width: 991.98px) {
            .solution-block {
                grid-template-columns: 1fr;
                gap: 28px;
                margin-bottom: 50px;
            }
            .solution-block:last-child .solution-media {
                order: 2;
            }
            .solution-block:last-child .solution-content {
                order: 1;
            }
        }

        @media (max-width: 767.98px) {
            .solution-block {
                gap: 20px;
            }
            .solution-content h3 {
                font-size: 20px;
            }
        }

        /* 数据区 */
        .stats-section {
            background: var(--bg-deep);
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(46, 124, 246, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .stats-col {
            padding: 20px 32px;
            position: relative;
            text-align: center;
        }

        .stats-col + .stats-col {
            border-left: 1px solid rgba(255, 255, 255, 0.08);
        }

        .stats-num {
            font-size: 44px;
            font-weight: 700;
            color: var(--brand-blue-light);
            font-feature-settings: "tnum";
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stats-label {
            font-size: 14px;
            color: var(--text-muted);
        }

        @media (max-width: 991.98px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0;
                row-gap: 32px;
            }
            .stats-col:nth-child(3) {
                border-left: none;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                padding-top: 32px;
            }
            .stats-col:nth-child(4) {
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                padding-top: 32px;
            }
        }

        @media (max-width: 575.98px) {
            .stats-num {
                font-size: 32px;
            }
            .stats-label {
                font-size: 13px;
            }
        }

        /* 证言区 */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 28px;
            backdrop-filter: blur(12px);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .testimonial-card:nth-child(2) {
            transform: translateY(20px);
        }

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

        .testimonial-card:nth-child(2):hover {
            transform: translateY(24px);
        }

        .testimonial-stars {
            color: var(--accent-orange);
            font-size: 15px;
            margin-bottom: 16px;
        }

        .testimonial-card blockquote {
            font-size: 15px;
            line-height: 1.7;
            color: #CBD5E1;
            margin: 0 0 20px;
            padding: 0;
            border: none;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .avatar-circle {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--brand-blue) 0%, var(--brand-blue-dark) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            flex-shrink: 0;
        }

        .author-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-light);
            line-height: 1.3;
        }

        .author-role {
            font-size: 12px;
            color: var(--text-dim);
        }

        @media (max-width: 991.98px) {
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-card:nth-child(2),
            .testimonial-card:nth-child(2):hover {
                transform: none;
            }
        }

        @media (max-width: 767.98px) {
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 最新资讯区 */
        .news-section {
            background: rgba(15, 29, 58, 0.35);
        }

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

        .news-card {
            display: block;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--glass-border);
            border-left: 3px solid transparent;
            border-radius: var(--radius-md);
            padding: 24px 26px;
            transition: all 0.3s ease;
            height: 100%;
        }

        .news-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--glass-border-hover);
            border-left-color: var(--brand-blue);
            transform: translateX(4px);
            box-shadow: var(--shadow-card);
        }

        .news-tag {
            display: inline-block;
            background: rgba(245, 166, 35, 0.15);
            border: 1px solid rgba(245, 166, 35, 0.3);
            color: var(--accent-orange);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: var(--radius-pill);
            margin-bottom: 12px;
        }

        .news-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-light);
            line-height: 1.5;
            margin-bottom: 8px;
            transition: color 0.2s;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card:hover .news-title {
            color: var(--brand-blue-light);
        }

        .news-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-dim);
        }

        .news-meta .bi {
            font-size: 12px;
            margin-right: 3px;
        }

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px 20px;
            background: var(--glass-bg);
            border: 1px dashed rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            color: var(--text-muted);
            font-size: 15px;
        }

        @media (max-width: 767.98px) {
            .news-grid {
                grid-template-columns: 1fr;
            }
        }

        /* FAQ */
        .faq-accordion .accordion-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            backdrop-filter: blur(8px);
        }

        .faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: rgba(46, 124, 246, 0.5);
        }

        .faq-accordion .accordion-button {
            background: transparent;
            color: var(--text-light);
            font-size: 16px;
            font-weight: 500;
            padding: 18px 22px;
            box-shadow: none;
            border: none;
        }

        .faq-accordion .accordion-button::after {
            background-image: none;
            content: "";
            width: 18px;
            height: 18px;
            border: 2px solid var(--brand-blue-light);
            border-radius: 4px;
            position: relative;
            transition: transform 0.3s ease;
            transform: rotate(0deg);
        }

        .faq-accordion .accordion-button::after {
            background-image: linear-gradient(45deg, transparent 45%, var(--brand-blue-light) 45%, var(--brand-blue-light) 55%, transparent 55%),
                linear-gradient(-45deg, transparent 45%, var(--brand-blue-light) 45%, var(--brand-blue-light) 55%, transparent 55%);
            background-size: 6px 6px;
            background-position: center;
            background-repeat: no-repeat;
            transform: rotate(45deg);
            transition: transform 0.3s ease;
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(0deg);
        }

        .faq-accordion .accordion-button:hover {
            background: rgba(255, 255, 255, 0.04);
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(46, 124, 246, 0.15);
            border-color: transparent;
        }

        .faq-accordion .accordion-body {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
            padding: 0 22px 20px;
        }

        /* CTA 横幅 */
        .cta-section {
            padding: 70px 0;
            position: relative;
            background: linear-gradient(120deg, #1E6FFF 0%, #0F1D3A 75%);
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: -80px;
            right: 15%;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(245, 166, 35, 0.25) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section::after {
            content: "";
            position: absolute;
            bottom: -60px;
            left: 5%;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, rgba(46, 124, 246, 0.3) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .cta-inner h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .cta-inner p {
            font-size: 15px;
            color: rgba(232, 237, 245, 0.8);
            margin-bottom: 32px;
        }

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

        .cta-buttons .btn-primary-glow {
            height: 52px;
            padding: 0 36px;
            font-size: 16px;
        }

        .cta-buttons .btn-glass {
            height: 52px;
            padding: 0 36px;
            font-size: 15px;
        }

        .cta-note {
            font-size: 12px;
            color: rgba(148, 163, 184, 0.9);
            margin-top: 16px;
        }

        @media (max-width: 767.98px) {
            .cta-inner h2 {
                font-size: 24px;
            }
            .cta-buttons {
                flex-direction: column;
            }
            .cta-buttons .btn {
                width: 100%;
            }
        }

        /* 页脚 */
        .site-footer {
            background: #0B0F1A;
            padding-top: 60px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand .brand-text {
            color: var(--text-light);
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-top: 16px;
        }

        .footer-social {
            display: flex;
            gap: 10px;
            margin-top: 18px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 14px;
            transition: all 0.25s;
        }

        .footer-social a:hover {
            background: var(--brand-blue);
            border-color: var(--brand-blue);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 18px;
        }

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

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

        .footer-col ul a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color 0.2s, padding-left 0.2s;
        }

        .footer-col ul a:hover {
            color: var(--brand-blue-light);
            padding-left: 4px;
        }

        .footer-contact li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 12px;
        }

        .footer-contact .bi {
            color: var(--brand-blue-light);
            margin-top: 3px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            font-size: 13px;
            color: var(--text-dim);
            text-align: center;
        }

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

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

        @media (max-width: 991.98px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 575.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        /* 通用焦点处理 */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--brand-blue);
            outline-offset: 2px;
        }

/* roulang page: category1 */
:root {
            --primary-blue: #2E7CF6;
            --primary-light: #4A90FF;
            --primary-dark: #1B5FDE;
            --accent-orange: #F5A623;
            --accent-light: #FFB347;
            --bg-dark: #0B132B;
            --bg-deeper: #0F1D3A;
            --bg-card: rgba(255, 255, 255, 0.06);
            --border-card: rgba(255, 255, 255, 0.10);
            --text-main-dark: #E8EDF5;
            --text-sub-dark: #94A3B8;
            --text-weak-dark: #64748B;
            --text-main-light: #1E293B;
            --text-sub-light: #64748B;
            --radius-card: 16px;
            --radius-btn: 10px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.30);
            --shadow-glow-blue: 0 0 24px rgba(46, 124, 246, 0.40);
            --font-stack: "PingFang SC", "Microsoft YaHei", "HarmonicOS Sans", "Helvetica Neue", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

        a {
            text-decoration: none;
            transition: all 0.3s ease;
        }

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

        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header */
        .site-header {
            background: #ffffff;
            height: 64px;
            border-bottom: 1px solid #E2E8F0;
            box-shadow: 0 1px 8px rgba(15, 29, 58, 0.05);
            padding-top: 0;
            padding-bottom: 0;
            z-index: 1000;
        }

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

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
        }

        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main-light);
            letter-spacing: 0.02em;
        }

        .navbar-nav {
            margin: 0 auto;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-link {
            font-size: 15px;
            color: #334155;
            font-weight: 500;
            padding: 8px 16px !important;
            border-bottom: 2px solid transparent;
            transition: all 0.25s ease;
        }

        .nav-link:hover {
            color: var(--primary-blue);
            border-bottom-color: var(--primary-blue);
        }

        .nav-link.active {
            color: var(--primary-blue);
            border-bottom: 2px solid var(--primary-blue);
            font-weight: 600;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-left: 14px;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: #F8FAFC;
            border: 1px solid #E2E8F0;
            border-radius: 999px;
            padding: 6px 16px;
            width: 200px;
            height: 36px;
            gap: 8px;
            transition: border-color 0.3s, box-shadow 0.3s;
        }

        .search-box:focus-within {
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(46, 124, 246, 0.15);
        }

        .search-box i {
            color: var(--text-sub-light);
            font-size: 14px;
        }

        .search-box input {
            border: none;
            background: transparent;
            font-size: 13px;
            width: 100%;
            color: var(--text-main-light);
        }

        .search-box input::placeholder {
            color: #94A3B8;
        }

        .btn-cta {
            background: linear-gradient(135deg, #2E7CF6, #1B5FDE);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 8px 20px;
            height: 40px;
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 18px rgba(46, 124, 246, 0.30);
            transition: all 0.3s ease;
        }

        .btn-cta:hover {
            background: linear-gradient(135deg, #4A90FF, #2E7CF6);
            box-shadow: 0 8px 24px rgba(46, 124, 246, 0.40);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-cta:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(46, 124, 246, 0.30);
        }

        .navbar-toggler {
            border: none;
            padding: 4px 8px;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(30,41,59,0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* Banner Hero */
        .category-banner {
            position: relative;
            min-height: 220px;
            display: flex;
            align-items: center;
            justify-content: center;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-color: var(--bg-deeper);
            padding: 60px 0;
            text-align: center;
            overflow: hidden;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 19, 43, 0.92), rgba(15, 29, 58, 0.72));
            z-index: 1;
        }

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

        .category-banner h1 {
            font-size: 42px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.03em;
            margin-bottom: 12px;
            text-shadow: 0 2px 20px rgba(11, 19, 43, 0.5);
        }

        .category-banner .banner-sub {
            font-size: 16px;
            color: rgba(232, 237, 245, 0.85);
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.6;
        }

        .category-banner .banner-badge {
            display: inline-block;
            background: rgba(46, 124, 246, 0.2);
            border: 1px solid rgba(46, 124, 246, 0.4);
            color: var(--accent-light);
            font-size: 12px;
            font-weight: 500;
            border-radius: 999px;
            padding: 4px 14px;
            margin-bottom: 16px;
            letter-spacing: 0.08em;
        }

        /* Section spacing */
        .section-block {
            padding: 80px 0;
        }

        .section-alt {
            background: var(--bg-deeper);
        }

        .section-tag {
            display: inline-block;
            background: rgba(245, 166, 35, 0.15);
            color: var(--accent-orange);
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            padding: 4px 14px;
            letter-spacing: 0.06em;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main-dark);
            letter-spacing: 0.02em;
            margin-bottom: 20px;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-sub-dark);
            line-height: 1.8;
            max-width: 600px;
        }

        /* Split feature block */
        .split-block {
            display: flex;
            align-items: center;
            gap: 50px;
            margin-bottom: 50px;
        }

        .split-block:last-child {
            margin-bottom: 0;
        }

        .split-block .split-img {
            flex: 1 1 48%;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 2px solid rgba(46, 124, 246, 0.2);
            position: relative;
            background: var(--bg-deeper);
        }

        .split-block .split-img img {
            width: 100%;
            height: auto;
            aspect-ratio: 4/3;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .split-block:hover .split-img img {
            transform: scale(1.02);
        }

        .split-block .split-content {
            flex: 1 1 48%;
        }

        .split-block .split-content .mini-tag {
            display: inline-block;
            background: rgba(46, 124, 246, 0.15);
            color: var(--primary-light);
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            padding: 4px 12px;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }

        .split-block .split-content h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-main-dark);
            margin-bottom: 14px;
            line-height: 1.4;
        }

        .split-block .split-content p {
            font-size: 15px;
            color: var(--text-sub-dark);
            line-height: 1.8;
            margin-bottom: 18px;
        }

        .split-block .split-content .feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 20px 0;
        }

        .split-block .split-content .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 14px;
            color: rgba(232, 237, 245, 0.88);
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .split-block .split-content .feature-list li i {
            color: var(--accent-orange);
            font-size: 15px;
            margin-top: 2px;
        }

        .split-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary-light);
            font-size: 14px;
            font-weight: 500;
        }

        .split-link:hover {
            color: var(--accent-orange);
            gap: 10px;
        }

        .split-link i {
            font-size: 14px;
        }

        /* CTA strip */
        .cta-strip {
            position: relative;
            background: linear-gradient(120deg, #1E6FFF, #0F1D3A);
            border-radius: var(--radius-card);
            padding: 50px 50px;
            text-align: center;
            overflow: hidden;
            margin: 80px 0;
            box-shadow: var(--shadow-card);
        }

        .cta-strip::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(245, 166, 35, 0.25), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-strip::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: 20px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(46, 124, 246, 0.35), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-strip h2 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
            letter-spacing: 0.02em;
        }

        .cta-strip p {
            font-size: 15px;
            color: rgba(232, 237, 245, 0.8);
            max-width: 540px;
            margin: 0 auto 26px;
            position: relative;
            z-index: 2;
        }

        .cta-strip .btn-xl {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #F5A623, #FFB347);
            color: #1E293B;
            border: none;
            border-radius: var(--radius-btn);
            padding: 14px 38px;
            font-size: 15px;
            font-weight: 700;
            box-shadow: 0 0 30px rgba(245, 166, 35, 0.35);
            transition: all 0.3s ease;
            position: relative;
            z-index: 2;
        }

        .cta-strip .btn-xl:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(245, 166, 35, 0.45);
            color: #1E293B;
        }

        .cta-strip .btn-xl:active {
            transform: translateY(0);
            box-shadow: 0 2px 12px rgba(245, 166, 35, 0.35);
        }

        /* Footer */
        .site-footer {
            background: #0B0F1A;
            padding: 60px 0 0;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-brand .navbar-brand {
            margin-bottom: 14px;
        }

        .footer-brand .navbar-brand .brand-text {
            color: #E8EDF5;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-sub-dark);
            line-height: 1.8;
            margin-bottom: 20px;
            max-width: 340px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-sub-dark);
            font-size: 15px;
            transition: all 0.3s;
        }

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

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #E8EDF5;
            margin-bottom: 18px;
            letter-spacing: 0.04em;
        }

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

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

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-sub-dark);
            transition: color 0.3s, padding-left 0.3s;
        }

        .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-sub-dark);
            line-height: 1.6;
        }

        .footer-contact li i {
            color: var(--accent-orange);
            font-size: 14px;
            margin-top: 4px;
        }

        .footer-bottom {
            padding: 20px 0 40px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-weak-dark);
            margin: 0;
        }

        .footer-bottom p span {
            margin: 0 6px;
        }

        /* Reveal anim */
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .reveal.active {
            opacity: 1;
            transform: translateY(0);
        }

        /* Responsive */
        @media (max-width: 1199px) {
            .search-box {
                width: 160px;
            }
        }

        @media (max-width: 991px) {
            .site-header {
                height: auto;
                min-height: 64px;
            }

            .site-header .container {
                flex-wrap: wrap;
                padding-top: 10px;
                padding-bottom: 10px;
            }

            .navbar-collapse {
                background: #fff;
                padding: 16px;
                border-radius: 16px;
                box-shadow: 0 12px 40px rgba(15, 29, 58, 0.15);
                margin-top: 12px;
            }

            .navbar-nav {
                margin: 0;
                flex-direction: column;
                width: 100%;
            }

            .nav-link {
                padding: 12px 8px !important;
                border-bottom: 2px solid transparent;
            }

            .nav-link:hover,
            .nav-link.active {
                border-bottom-color: var(--primary-blue);
            }

            .header-actions {
                margin: 12px 0 0;
                flex-direction: column;
                width: 100%;
                gap: 10px;
            }

            .search-box {
                width: 100%;
            }

            .btn-cta {
                width: 100%;
            }

            .category-banner h1 {
                font-size: 32px;
            }

            .split-block {
                flex-direction: column;
                gap: 30px;
            }

            .split-block .split-img,
            .split-block .split-content {
                flex: 1 1 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 767px) {
            .category-banner {
                min-height: 200px;
                padding: 40px 0;
            }

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

            .category-banner .banner-sub {
                font-size: 14px;
            }

            .section-block {
                padding: 50px 0;
            }

            .section-title {
                font-size: 24px;
            }

            .split-block .split-content h3 {
                font-size: 20px;
            }

            .split-block .split-content p {
                font-size: 14px;
            }

            .cta-strip {
                padding: 36px 24px;
                margin: 50px 0;
            }

            .cta-strip h2 {
                font-size: 22px;
            }

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

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

            .footer-bottom {
                padding: 16px 0 30px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2E7CF6;
            --primary-dark: #1B5FDE;
            --primary-light: #4A90FF;
            --orange: #F5A623;
            --orange-light: #FFB347;
            --bg-dark: #0B132B;
            --bg-deep: #0F1D3A;
            --bg-light: #FFFFFF;
            --text-light: #E8EDF5;
            --text-muted: #94A3B8;
            --text-dim: #64748B;
            --card-bg: rgba(255,255,255,0.05);
            --card-border: rgba(255,255,255,0.08);
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 8px 32px rgba(0,0,0,0.30);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.40);
            --transition: all 0.3s ease;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "HarmonicOS Sans", "Helvetica Neue", sans-serif;
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            letter-spacing: 0.02em;
            overflow-x: hidden;
        }

        a,
        button,
        input {
            transition: var(--transition);
        }

        img {
            max-width: 100%;
        }

        /* ===== 导航 ===== */
        .site-header {
            background: #fff;
            min-height: 64px;
            border-bottom: 1px solid #E2E8F0;
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.06);
            padding: 8px 0;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
        }

        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 0;
        }

        .brand-icon {
            display: inline-flex;
            flex-shrink: 0;
            line-height: 1;
        }

        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: #1E293B;
            letter-spacing: 0.02em;
        }

        .navbar-toggler {
            border: 1px solid #E2E8F0;
            border-radius: 8px;
            padding: 6px 10px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 4px rgba(46, 124, 246, 0.15);
        }

        .navbar-nav {
            gap: 4px;
        }

        .navbar-nav .nav-link {
            color: #334155;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px !important;
            position: relative;
            border-radius: 8px;
            transition: color 0.3s ease, background 0.3s ease;
        }

        .navbar-nav .nav-link:hover {
            color: var(--primary);
            background: rgba(46, 124, 246, 0.06);
        }

        .navbar-nav .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-left: auto;
        }

        .search-box {
            background: #F1F5F9;
            border-radius: 999px;
            padding: 8px 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            width: 210px;
            border: 1px solid transparent;
            transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(46, 124, 246, 0.15);
            background: #fff;
        }

        .search-box i {
            color: #64748B;
            font-size: 14px;
            flex-shrink: 0;
        }

        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            color: #1E293B;
            width: 100%;
        }

        .search-box input::placeholder {
            color: #94A3B8;
        }

        .btn-cta {
            background: linear-gradient(135deg, #2E7CF6, #1B5FDE);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 22px;
            font-weight: 600;
            font-size: 14px;
            box-shadow: 0 0 24px rgba(46, 124, 246, 0.40);
            transition: filter 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
            white-space: nowrap;
            text-decoration: none;
            display: inline-block;
        }

        .btn-cta:hover {
            color: #fff;
            filter: brightness(1.1);
            box-shadow: 0 8px 24px rgba(46, 124, 246, 0.35);
            transform: translateY(-1px);
        }

        .btn-cta:active {
            transform: translateY(1px);
            box-shadow: 0 4px 12px rgba(46, 124, 246, 0.25);
        }

        @media (min-width: 992px) {
            .header-actions {
                margin-left: auto;
            }
        }

        @media (max-width: 991.98px) {
            .header-actions {
                flex-direction: column;
                align-items: stretch;
                padding: 16px 0 8px;
                margin-left: 0;
                gap: 12px;
            }

            .search-box {
                width: 100%;
            }

            .btn-cta {
                width: 100%;
                text-align: center;
            }

            .navbar-nav .nav-link.active::after {
                left: 16px;
                right: auto;
                width: 24px;
            }
        }

        /* ===== 页面 Hero ===== */
        .page-hero {
            background: linear-gradient(rgba(11, 19, 43, 0.88), rgba(15, 29, 58, 0.78)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 76px 0 72px;
            position: relative;
        }

        .breadcrumb-nav {
            margin-bottom: 20px;
        }

        .breadcrumb {
            --bs-breadcrumb-divider: '>';
            margin-bottom: 0;
        }

        .breadcrumb a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 13px;
        }

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

        .breadcrumb-item {
            color: var(--text-muted);
            font-size: 13px;
        }

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

        .page-hero h1 {
            font-size: 42px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

        .page-hero p {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 660px;
            margin: 0;
        }

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

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

        .section-head.text-center {
            text-align: center;
        }

        .section-tag {
            display: inline-block;
            background: rgba(46, 124, 246, 0.12);
            color: var(--primary-light);
            border: 1px solid rgba(46, 124, 246, 0.30);
            border-radius: 999px;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 720px;
        }

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

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

        /* ===== 资讯卡片 ===== */
        .insight-section {
            background: var(--bg-dark);
        }

        .insight-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius);
            overflow: hidden;
            height: 100%;
            backdrop-filter: blur(12px);
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .insight-card:hover {
            transform: translateY(-6px);
            border-color: rgba(255, 255, 255, 0.20);
            box-shadow: var(--shadow-hover);
            background: rgba(255, 255, 255, 0.10);
        }

        .card-thumb {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            flex-shrink: 0;
        }

        .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .insight-card:hover .card-thumb img {
            transform: scale(1.05);
        }

        .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(245, 166, 35, 0.92);
            color: #1E293B;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            z-index: 2;
            letter-spacing: 0.02em;
        }

        .card-body {
            padding: 24px 28px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .card-body h3 {
            font-size: 18px;
            color: var(--text-light);
            line-height: 1.5;
            margin-bottom: 12px;
            font-weight: 600;
        }

        .card-body h3 a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

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

        .card-meta {
            display: flex;
            gap: 16px;
            font-size: 13px;
            color: var(--text-dim);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .card-meta i {
            color: var(--primary-light);
            opacity: 0.8;
        }

        .read-more {
            color: var(--primary-light);
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.3s ease, color 0.3s ease;
            margin-top: auto;
        }

        .read-more:hover {
            color: #fff;
            gap: 10px;
        }

        /* ===== 热门话题 ===== */
        .topic-section {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .topic-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }

        .topic-tag {
            display: inline-block;
            padding: 10px 24px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 999px;
            color: var(--text-light);
            font-size: 14px;
            font-weight: 500;
            text-decoration: none;
            transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease, transform 0.3s ease;
        }

        .topic-tag:hover {
            background: rgba(46, 124, 246, 0.15);
            border-color: var(--primary);
            color: var(--primary-light);
            transform: translateY(-2px);
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: #0B132B;
            padding: 64px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            text-align: center;
        }

        .stat-item {
            position: relative;
            padding: 24px 12px;
        }

        .stat-item + .stat-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 60px;
            background: rgba(255, 255, 255, 0.12);
        }

        .stat-num {
            font-size: 42px;
            font-weight: 700;
            color: var(--primary-light);
            font-feature-settings: "tnum";
            line-height: 1.2;
            margin-bottom: 8px;
            letter-spacing: 0.01em;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
        }

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

        .accordion {
            max-width: 820px;
            margin: 0 auto;
        }

        .accordion-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08) !important;
            border-radius: 14px !important;
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }

        .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: rgba(46, 124, 246, 0.50) !important;
        }

        .accordion-button {
            background: transparent;
            color: var(--text-light);
            font-size: 16px;
            font-weight: 500;
            padding: 20px 24px;
            box-shadow: none !important;
            position: relative;
            border: none;
        }

        .accordion-button:hover {
            background: rgba(255, 255, 255, 0.04);
        }

        .accordion-button:not(.collapsed) {
            background: rgba(46, 124, 246, 0.10);
            color: var(--text-light);
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 4px rgba(46, 124, 246, 0.15) !important;
            border-radius: 14px;
        }

        .accordion-button::after {
            width: 20px;
            height: 20px;
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%2394A3B8' stroke-width='1.8' stroke-linecap='round'%3e%3cpath d='M8 3v10M3 8h10'/%3e%3c/svg%3e");
            background-size: contain;
            background-repeat: no-repeat;
            background-position: center;
            transform: rotate(0deg);
            transition: transform 0.3s ease, filter 0.3s ease;
            flex-shrink: 0;
        }

        .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            filter: drop-shadow(0 0 4px rgba(245, 166, 35, 0.35));
        }

        .accordion-body {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
            padding: 20px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }

        /* ===== CTA ===== */
        .cta-banner {
            background: linear-gradient(135deg, #1E6FFF 0%, #0F1D3A 70%);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(245, 166, 35, 0.25), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-banner::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(46, 124, 246, 0.20), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .cta-banner h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .cta-banner p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto 32px;
        }

        .btn-cta.btn-lg {
            padding: 16px 48px;
            font-size: 16px;
            border-radius: 12px;
            box-shadow: 0 0 30px rgba(245, 166, 35, 0.25);
        }

        .btn-cta.btn-lg:hover {
            box-shadow: 0 8px 36px rgba(245, 166, 35, 0.30);
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0B0F1A;
            padding: 64px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-brand .navbar-brand {
            margin-bottom: 16px;
            padding: 0;
        }

        .footer-brand .brand-text {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
            margin-bottom: 20px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 16px;
            text-decoration: none;
            transition: background 0.3s ease, color 0.3s ease, transform 0.3s ease;
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }

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

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

        .footer-col ul a {
            color: var(--text-muted);
            font-size: 14px;
            text-decoration: none;
            transition: color 0.3s ease;
            display: inline-block;
        }

        .footer-col ul a:hover {
            color: var(--primary-light);
            transform: translateX(2px);
        }

        .footer-contact li {
            color: var(--text-muted);
            font-size: 14px;
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.6;
        }

        .footer-contact li i {
            color: var(--primary-light);
            margin-top: 4px;
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
        }

        .footer-bottom p {
            color: var(--text-dim);
            font-size: 13px;
            margin: 0;
            letter-spacing: 0.02em;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1199.98px) {
            .page-hero h1 {
                font-size: 36px;
            }

            .section-head h2 {
                font-size: 28px;
            }

            .cta-banner h2 {
                font-size: 28px;
            }
        }

        @media (max-width: 991.98px) {
            .section {
                padding: 64px 0;
            }

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

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px 0;
            }
        }

        @media (max-width: 767.98px) {
            .page-hero {
                padding: 56px 0 48px;
            }

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

            .page-hero p {
                font-size: 15px;
            }

            .section {
                padding: 56px 0;
            }

            .section-head {
                margin-bottom: 32px;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .card-body {
                padding: 20px;
            }

            .card-body h3 {
                font-size: 17px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px 0;
            }

            .stat-item:nth-child(3)::before {
                display: none;
            }

            .stat-num {
                font-size: 34px;
            }

            .accordion-button {
                font-size: 15px;
                padding: 16px 20px;
            }

            .accordion-button::after {
                width: 24px;
                height: 24px;
            }

            .cta-banner {
                padding: 56px 0;
            }

            .cta-banner h2 {
                font-size: 24px;
            }

            .btn-cta.btn-lg {
                width: 100%;
                max-width: 360px;
            }

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

            .footer-bottom {
                padding: 16px 0;
            }
        }

        @media (max-width: 520px) {
            .topic-tag {
                padding: 8px 18px;
                font-size: 13px;
            }

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

            .card-meta {
                gap: 12px;
            }

            .site-header {
                padding: 6px 0;
            }
        }

/* roulang page: article */
:root {
    --primary: #2E7CF6;
    --primary-deep: #1B5FDE;
    --primary-light: #4A90FF;
    --accent: #F5A623;
    --accent-light: #FFB347;
    --bg-deep: #0B132B;
    --bg-dark: #0F1D3A;
    --bg-footer: #0B0F1A;
    --text-main: #E8EDF5;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --text-nav: #334155;
    --glass-bg: rgba(255,255,255,0.06);
    --glass-border: rgba(255,255,255,0.10);
    --radius-card: 16px;
    --radius-btn: 10px;
    --radius-pill: 999px;
    --shadow-card: 0 8px 32px rgba(0,0,0,0.30);
    --shadow-hover: 0 12px 40px rgba(0,0,0,0.40);
    --glow-primary: 0 0 24px rgba(46,124,246,0.40);
    --font-family: "PingFang SC", "Microsoft YaHei", "HarmonicOS Sans", "Helvetica Neue", Arial, sans-serif;
    --transition: all .3s ease;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--font-family);
    background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-dark) 100%);
    color: var(--text-main);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-light); }
img { max-width: 100%; height: auto; }
button, input { font-family: inherit; }
::selection { background: rgba(46,124,246,.35); color: #fff; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid rgba(46,124,246,.45); outline-offset: 2px; }

/* ===== Header / Nav ===== */
.site-header {
    background: #FFFFFF;
    border-bottom: 1px solid #E2E8F0;
    box-shadow: 0 1px 8px rgba(15,23,42,.06);
    min-height: 64px;
    transition: box-shadow .3s ease;
}
.site-header.scrolled { box-shadow: 0 4px 24px rgba(15,23,42,.1); }
.navbar-brand { display: flex; align-items: center; gap: 10px; padding: 0; margin: 0; }
.brand-icon { display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; border-radius: 10px; background: #EFF6FF; }
.brand-text { font-size: 20px; font-weight: 700; color: var(--text-nav); letter-spacing: .02em; }
.site-header .navbar-nav { margin-left: 32px; gap: 4px; }
.site-header .nav-link {
    color: var(--text-nav);
    font-size: 15px;
    font-weight: 500;
    padding: 22px 14px !important;
    position: relative;
    letter-spacing: .01em;
    white-space: nowrap;
}
.site-header .nav-link:hover { color: var(--primary); }
.site-header .nav-link.active { color: var(--primary); }
.site-header .nav-link.active::after {
    content: '';
    position: absolute;
    left: 14px; right: 14px; bottom: 0;
    height: 2px;
    border-radius: 2px 2px 0 0;
    background: var(--primary);
}
.navbar-toggler { border: 1px solid #E2E8F0; border-radius: 10px; padding: 6px 10px; }
.navbar-toggler:focus { box-shadow: 0 0 0 3px rgba(46,124,246,.15); }
.header-actions { display: flex; align-items: center; gap: 14px; margin-left: auto; }
.search-box {
    display: flex; align-items: center; gap: 8px;
    background: #F1F5F9; border: 1px solid transparent;
    border-radius: var(--radius-pill);
    height: 36px; width: 200px; padding: 0 14px;
    transition: var(--transition);
}
.search-box:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(46,124,246,.15);
    background: #FFFFFF;
}
.search-box i { color: var(--text-muted); font-size: 14px; }
.search-box input { border: 0; background: transparent; outline: none; width: 100%; font-size: 13px; color: var(--text-nav); }
.search-box input::placeholder { color: var(--text-muted); }
.search-box input::-ms-clear { display: none; }

/* ===== Buttons ===== */
.btn-cta {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    background: linear-gradient(135deg, #2E7CF6, #1B5FDE);
    color: #FFFFFF; border: 0; border-radius: var(--radius-btn);
    height: 40px; padding: 0 20px;
    font-size: 14px; font-weight: 600; letter-spacing: .02em;
    box-shadow: var(--glow-primary);
    transition: var(--transition);
    white-space: nowrap;
}
.btn-cta:hover { color: #fff; filter: brightness(1.1); box-shadow: 0 8px 24px rgba(46,124,246,.35); transform: translateY(-1px); }
.btn-cta:active { transform: translateY(1px); box-shadow: 0 4px 12px rgba(46,124,246,.25); }
.btn-cta-lg { height: 52px; padding: 0 34px; font-size: 16px; border-radius: 12px; }
.btn-ghost {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.25);
    color: var(--text-main);
    border-radius: var(--radius-btn);
    height: 52px; padding: 0 26px; font-size: 15px; font-weight: 500;
    backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
    transition: var(--transition); white-space: nowrap;
}
.btn-ghost:hover { border-color: rgba(255,255,255,.5); background: rgba(255,255,255,.12); color: #fff; transform: translateY(-1px); }

/* ===== Reading Progress ===== */
.reading-progress { position: fixed; top: 64px; left: 0; width: 100%; height: 3px; z-index: 1030; pointer-events: none; background: transparent; }
.reading-progress span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, #2E7CF6, #F5A623); transition: width .1s linear; }

/* ===== Article Hero ===== */
.article-hero {
    position: relative;
    padding: 64px 0 56px;
    background: linear-gradient(135deg, rgba(11,19,43,.94) 0%, rgba(15,29,58,.88) 100%), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
    border-bottom: 1px solid rgba(255,255,255,.06);
}
.breadcrumb-nav { font-size: 13px; color: var(--text-secondary); display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin-bottom: 20px; }
.breadcrumb-nav a { color: var(--text-secondary); display: inline-flex; align-items: center; gap: 4px; }
.breadcrumb-nav a:hover { color: var(--primary-light); }
.breadcrumb-nav .separator { color: var(--text-muted); font-size: 11px; display: inline-flex; align-items: center; }
.breadcrumb-nav .current { color: var(--text-secondary); max-width: 440px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.article-title { font-size: 34px; font-weight: 700; line-height: 1.4; letter-spacing: .02em; margin: 0 0 18px; color: #FFFFFF; }
.article-meta { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; font-size: 14px; color: var(--text-secondary); }
.meta-item { display: inline-flex; align-items: center; gap: 7px; }
.meta-item i { color: var(--text-muted); font-size: 14px; }
.badge-cat {
    display: inline-flex; align-items: center; gap: 6px;
    background: rgba(245,166,35,.16); color: var(--accent-light);
    font-size: 13px; font-weight: 500;
    padding: 4px 14px; border-radius: var(--radius-pill);
}

/* ===== Article Body ===== */
.article-section { padding: 56px 0 40px; }
.article-body { max-width: 760px; margin: 0 auto; font-size: 16px; line-height: 2.0; color: var(--text-main); }
.article-body h2 {
    font-size: 26px; font-weight: 700; line-height: 1.5;
    margin: 48px 0 16px; padding-left: 16px;
    color: #FFFFFF; letter-spacing: .02em; position: relative;
}
.article-body h2::before {
    content: ''; position: absolute; left: 0; top: .16em; bottom: .16em;
    width: 4px; border-radius: 4px;
    background: linear-gradient(180deg, #2E7CF6, #1B5FDE);
}
.article-body h3 { font-size: 20px; font-weight: 600; margin: 32px 0 14px; color: var(--text-main); }
.article-body p { margin: 0 0 24px; }
.article-body strong { color: #FFFFFF; }
.article-body a { color: var(--primary-light); text-decoration: underline; text-underline-offset: 4px; }
.article-body a:hover { color: var(--accent-light); }
.article-body img { display: block; border-radius: 12px; border: 1px solid rgba(255,255,255,.12); margin: 20px auto; box-shadow: 0 8px 32px rgba(0,0,0,.35); }
.article-body blockquote {
    border-left: 3px solid var(--primary);
    background: rgba(46,124,246,.08);
    padding: 16px 24px; margin: 28px 0;
    border-radius: 0 12px 12px 0;
    color: var(--text-secondary);
    font-size: 15px;
}
.article-body ul, .article-body ol { margin: 0 0 24px; padding-left: 24px; }
.article-body li { margin-bottom: 8px; }
.article-body li::marker { color: var(--primary); }
.article-body code { background: #0B132B; border: 1px solid rgba(255,255,255,.1); border-radius: 6px; padding: 2px 8px; font-size: 14px; color: var(--accent-light); }
.article-body pre { background: #0B132B; border: 1px solid rgba(255,255,255,.1); border-radius: 10px; padding: 20px; overflow-x: auto; margin: 0 0 24px; }
.article-body pre code { background: transparent; border: 0; padding: 0; color: var(--text-main); }
.article-body table { width: 100%; border-collapse: collapse; margin: 0 0 24px; font-size: 14px; }
.article-body th, .article-body td { border: 1px solid rgba(255,255,255,.12); padding: 10px 14px; text-align: left; }
.article-body th { background: rgba(46,124,246,.12); color: #fff; font-weight: 600; }
.article-body hr { border: 0; border-top: 1px solid rgba(255,255,255,.1); margin: 36px 0; }
.article-body iframe { max-width: 100%; border-radius: 12px; border: 0; }
.article-body .aligncenter { display: block; margin-left: auto; margin-right: auto; }
.article-body .alignleft { float: left; margin: 8px 24px 16px 0; }
.article-body .alignright { float: right; margin: 8px 0 16px 24px; }

/* ===== Article Bottom ===== */
.article-bottom { max-width: 760px; margin: 44px auto 0; border-top: 1px solid rgba(255,255,255,.08); padding-top: 28px; }
.back-category { margin-bottom: 16px; }
.back-category a { color: var(--text-secondary); font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.back-category a:hover { color: var(--primary-light); }
.article-pager { display: flex; justify-content: space-between; gap: 16px; }
.pager-link {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 14px; color: var(--text-secondary);
    border: 1px solid rgba(255,255,255,.1);
    background: rgba(255,255,255,.03);
    padding: 10px 22px; border-radius: var(--radius-btn);
    transition: var(--transition);
}
.pager-link:hover { color: var(--primary-light); border-color: var(--primary); background: rgba(46,124,246,.08); transform: translateY(-2px); }
.pager-link i { font-size: 13px; }

/* ===== Not Found ===== */
.not-found {
    max-width: 720px; margin: 40px auto;
    text-align: center; padding: 72px 32px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-card);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.not-found h1 { font-size: 30px; font-weight: 700; margin-bottom: 12px; }
.not-found .not-found-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; color: var(--primary-light); font-size: 15px; font-weight: 500; }
.not-found .not-found-link:hover { color: var(--accent-light); }

/* ===== Section Header ===== */
.section-header { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.section-label {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(245,166,35,.12); color: var(--accent-light);
    font-size: 13px; font-weight: 500; letter-spacing: .04em;
    padding: 6px 18px; border-radius: var(--radius-pill);
    margin-bottom: 14px;
}
.section-label i { font-size: 14px; }
.section-title { font-size: 30px; font-weight: 700; letter-spacing: .02em; margin-bottom: 12px; color: #FFFFFF; }
.section-subtitle { color: var(--text-secondary); font-size: 15px; margin: 0; }

/* ===== Related ===== */
.related-section { padding: 72px 0 80px; }
.related-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-card);
    overflow: hidden; height: 100%;
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    transition: var(--transition);
}
.related-card:hover { transform: translateY(-6px); border-color: rgba(255,255,255,.2); background: rgba(255,255,255,.10); box-shadow: var(--shadow-hover); }
.card-thumb { aspect-ratio: 16 / 9; overflow: hidden; position: relative; background: linear-gradient(135deg, #0F1D3A, #1B5FDE); }
.card-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; display: block; }
.related-card:hover .card-thumb img { transform: scale(1.05); }
.related-card .card-body { padding: 20px 22px 22px; }
.card-tag { display: inline-block; background: rgba(245,166,35,.15); color: var(--accent-light); font-size: 12px; font-weight: 500; border-radius: var(--radius-pill); padding: 3px 12px; margin-bottom: 10px; }
.related-card h3 { font-size: 17px; font-weight: 600; line-height: 1.45; margin: 0 0 8px; }
.related-card h3 a { color: var(--text-main); }
.related-card h3 a:hover { color: var(--primary-light); }
.related-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.65; margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ===== FAQ ===== */
.faq-section { padding: 80px 0; background: rgba(11,19,43,.55); border-top: 1px solid rgba(255,255,255,.05); border-bottom: 1px solid rgba(255,255,255,.05); }
.faq-accordion { max-width: 820px; margin: 0 auto; }
.accordion-item {
    background: var(--glass-bg) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: var(--radius-card) !important;
    margin-bottom: 12px;
    overflow: hidden;
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    transition: border-color .3s ease;
}
.accordion-item:has(.accordion-button:not(.collapsed)) { border-color: rgba(46,124,246,.5) !important; }
.accordion-header { margin: 0; }
.accordion-button {
    background: transparent !important;
    color: var(--text-main) !important;
    font-size: 16px; font-weight: 500; letter-spacing: .01em;
    padding: 18px 24px;
    box-shadow: none !important;
    border-radius: var(--radius-card) !important;
    transition: var(--transition);
}
.accordion-button:not(.collapsed) { color: var(--text-main) !important; background: transparent !important; }
.accordion-button:hover { color: var(--primary-light) !important; }
.accordion-button::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23E8EDF5'%3e%3cpath fill-rule='evenodd' d='M8 2a.75.75 0 0 1 .75.75v4.5h4.5a.75.75 0 0 1 0 1.5h-4.5v4.5a.75.75 0 0 1-1.5 0v-4.5h-4.5a.75.75 0 0 1 0-1.5h4.5v-4.5A.75.75 0 0 1 8 2Z'/%3e%3c/svg%3e");
    background-size: 14px;
    width: 18px; height: 18px;
    transition: transform .3s ease;
}
.accordion-button:not(.collapsed)::after { filter: invert(72%) sepia(61%) saturate(384%) hue-rotate(182deg); }
.accordion-body { color: var(--text-secondary); font-size: 15px; line-height: 1.85; padding: 0 24px 20px; }

/* ===== CTA ===== */
.cta-section { position: relative; padding: 80px 0; background: linear-gradient(120deg, #1E6FFF 0%, #0F1D3A 100%); overflow: hidden; }
.cta-section::before { content: ''; position: absolute; top: -100px; right: 8%; width: 360px; height: 360px; background: radial-gradient(circle, rgba(245,166,35,.22), transparent 70%); pointer-events: none; }
.cta-section::after { content: ''; position: absolute; bottom: -80px; left: 4%; width: 280px; height: 280px; background: radial-gradient(circle, rgba(46,124,246,.3), transparent 70%); pointer-events: none; }
.cta-wrap { position: relative; z-index: 1; }
.cta-title { font-size: 32px; font-weight: 700; letter-spacing: .02em; color: #fff; margin-bottom: 12px; }
.cta-desc { color: rgba(232,237,245,.85); font-size: 16px; margin-bottom: 0; max-width: 620px; }
.cta-actions { display: flex; gap: 14px; justify-content: flex-end; align-items: center; }

/* ===== Footer ===== */
.site-footer { background: var(--bg-footer); color: var(--text-secondary); padding: 64px 0 28px; border-top: 1px solid rgba(255,255,255,.05); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 44px; }
.footer-brand .navbar-brand { margin-bottom: 16px; }
.site-footer .brand-text { color: var(--text-main); }
.footer-brand p { font-size: 14px; line-height: 1.85; color: var(--text-secondary); max-width: 360px; margin: 0; }
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a {
    width: 38px; height: 38px;
    display: inline-flex; align-items: center; justify-content: center;
    background: rgba(255,255,255,.06); border-radius: 10px;
    color: var(--text-secondary); font-size: 16px;
    transition: var(--transition);
}
.footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
.footer-col h4 { color: var(--text-main); font-size: 16px; font-weight: 600; margin-bottom: 20px; letter-spacing: .02em; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col ul li { margin-bottom: 12px; font-size: 14px; }
.footer-col ul li a { color: var(--text-secondary); font-size: 14px; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--primary-light); padding-left: 4px; }
.footer-contact li { display: flex; gap: 8px; align-items: flex-start; color: var(--text-secondary); }
.footer-contact li i { color: var(--primary-light); margin-top: 4px; font-size: 14px; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.08);
    padding-top: 24px; margin-top: 48px;
    display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
    font-size: 13px; color: var(--text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 1199.98px) {
    .search-box { width: 160px; }
    .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 32px; }
}
@media (max-width: 991.98px) {
    .site-header .navbar-collapse { padding-bottom: 16px; border-top: 1px solid #F1F5F9; margin-top: 12px; }
    .site-header .navbar-nav { margin-left: 0; padding-top: 10px; gap: 0; }
    .site-header .nav-link { padding: 12px 0 !important; display: block; }
    .site-header .nav-link.active::after { display: none; }
    .header-actions { margin-left: 0; padding: 16px 0 4px; flex-direction: column; align-items: stretch; width: 100%; gap: 12px; }
    .search-box { width: 100%; }
    .btn-cta { width: 100%; }
    .article-title { font-size: 30px; }
    .cta-title { font-size: 28px; }
    .cta-actions { justify-content: flex-start; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .footer-brand p { max-width: 100%; }
}
@media (max-width: 767.98px) {
    .article-hero { padding: 44px 0 40px; }
    .article-title { font-size: 25px; line-height: 1.45; }
    .article-meta { gap: 12px; font-size: 13px; }
    .article-section { padding: 40px 0 32px; }
    .article-body { font-size: 15px; line-height: 1.95; }
    .article-body h2 { font-size: 21px; }
    .article-body h3 { font-size: 18px; }
    .article-body blockquote { padding: 14px 18px; }
    .article-pager { flex-direction: column; }
    .pager-link { width: 100%; justify-content: center; }
    .back-category { text-align: center; }
    .section-title { font-size: 24px; }
    .section-header { margin-bottom: 36px; }
    .related-section { padding: 56px 0 60px; }
    .faq-section { padding: 56px 0; }
    .faq-accordion { padding: 0 4px; }
    .accordion-button { font-size: 15px; padding: 16px 18px; }
    .accordion-button::after { width: 22px; height: 22px; }
    .accordion-body { padding: 0 18px 16px; font-size: 14px; }
    .cta-section { padding: 56px 0; text-align: center; }
    .cta-title { font-size: 23px; }
    .cta-desc { font-size: 14px; margin: 0 auto 28px; }
    .cta-actions { flex-direction: column; width: 100%; }
    .cta-actions .btn { width: 100%; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}