/* roulang page: index */
/* ==================== 设计变量 ==================== */
        :root {
            --bg-primary: #081626;
            --bg-secondary: #0D1F33;
            --bg-elevated: rgba(255, 255, 255, 0.06);
            --bg-modal: rgba(13, 31, 51, 0.98);
            --accent-blue: #2E6BFF;
            --accent-blue-hover: #4c84ff;
            --accent-gold: #C9A063;
            --accent-gold-light: rgba(201, 160, 99, 0.15);
            --text-primary: #E8EEF7;
            --text-secondary: #9AA7B8;
            --text-muted: #6E7F93;
            --border-light: rgba(255, 255, 255, 0.08);
            --border-gold: rgba(201, 160, 99, 0.4);
            --shadow-card: 0 14px 40px rgba(0, 0, 0, 0.38);
            --shadow-hover: 0 18px 48px rgba(46, 107, 255, 0.22);
            --radius-card: 16px;
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-pill: 999px;
            --transition: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
        }

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

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

        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
        }

        body.modal-open {
            overflow: hidden;
        }

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

        a:hover {
            color: var(--accent-blue-hover);
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul, ol {
            list-style-position: inside;
            padding-left: 1.2rem;
        }

        li {
            margin-bottom: 0.35rem;
        }

        /* ==================== 容器与通用布局 ==================== */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 28px;
        }

        .section {
            padding: 76px 0;
            position: relative;
        }

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

        .section-tight {
            padding: 48px 0;
        }

        .section-header {
            margin-bottom: 44px;
            max-width: 720px;
        }

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

        .section-header .kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--accent-gold);
            margin-bottom: 10px;
        }

        .section-header .kicker::before {
            content: '';
            display: inline-block;
            width: 18px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent-gold));
        }

        .section-header .kicker::after {
            content: '';
            display: inline-block;
            width: 18px;
            height: 1px;
            background: linear-gradient(90deg, var(--accent-gold), transparent);
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 600;
            letter-spacing: 0.02em;
            color: var(--text-primary);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        .section-header.center .kicker::before {
            display: none;
        }

        .section-header.center .kicker::after {
            display: none;
        }

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

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

        /* ==================== 左侧导航 / App Shell ==================== */
        .app-shell {
            min-height: 100vh;
        }

        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 240px;
            height: 100vh;
            background: rgba(8, 22, 38, 0.82);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-right: 1px solid var(--border-light);
            z-index: 1050;
            display: flex;
            flex-direction: column;
            padding: 24px 16px;
            transition: transform 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 8px 8px 24px;
            border-bottom: 1px solid var(--border-light);
            margin-bottom: 20px;
        }

        .sidebar-brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(46, 107, 255, 0.3), rgba(201, 160, 99, 0.2));
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border-gold);
            flex-shrink: 0;
        }

        .sidebar-brand-icon svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: var(--accent-gold);
            stroke-width: 2;
        }

        .sidebar-brand-text {
            font-size: 20px;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--text-primary);
            line-height: 1.2;
        }

        .sidebar-brand-text span {
            display: block;
            font-size: 12px;
            font-weight: 400;
            color: var(--text-muted);
            letter-spacing: 0.06em;
            margin-top: 2px;
        }

        .sidebar-nav {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding-top: 12px;
        }

        .sidebar-nav-group-label {
            font-size: 11px;
            font-weight: 500;
            letter-spacing: 0.18em;
            color: var(--text-muted);
            padding: 12px 12px 6px;
            text-transform: uppercase;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 44px;
            padding: 0 16px;
            border-radius: 8px;
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 400;
            transition: all var(--transition);
            position: relative;
        }

        .sidebar-nav a i {
            font-size: 16px;
            width: 18px;
            text-align: center;
            opacity: 0.85;
        }

        .sidebar-nav a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .sidebar-nav a.active {
            color: var(--accent-blue-hover);
            background: rgba(255, 255, 255, 0.06);
            font-weight: 500;
            text-shadow: 0 0 16px rgba(46, 107, 255, 0.5);
        }

        .sidebar-nav a.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 10px;
            width: 3px;
            height: 24px;
            border-radius: 0 4px 4px 0;
            background: var(--accent-blue);
            box-shadow: 0 0 12px rgba(46, 107, 255, 0.6);
        }

        .sidebar-nav a.btn-estimate-mobile {
            display: none;
        }

        .sidebar-cta {
            padding: 16px 0 8px;
            border-top: 1px solid var(--border-light);
            margin-top: auto;
        }

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

        .sidebar-footer-text {
            padding: 12px 12px 0;
            font-size: 12px;
            color: var(--text-muted);
        }

        .sidebar-footer-text a {
            color: var(--text-muted);
            font-size: 12px;
        }

        .sidebar-footer-text a:hover {
            color: var(--text-primary);
        }

        .main-content {
            margin-left: 240px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* 移动端顶部栏 */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 64px;
            background: rgba(8, 22, 38, 0.9);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 1049;
            padding: 0 20px;
            border-bottom: 1px solid var(--border-light);
            align-items: center;
            justify-content: space-between;
        }

        .mobile-brand {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            letter-spacing: 0.04em;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .mobile-brand svg {
            width: 18px;
            height: 18px;
            fill: none;
            stroke: var(--accent-gold);
            stroke-width: 2;
        }

        .btn-hamburger {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-primary);
            font-size: 20px;
        }

        .btn-estimate-mobile {
            height: 36px;
            padding: 0 16px;
            border-radius: var(--radius-pill);
            background: linear-gradient(135deg, var(--accent-blue), #1a4ec4);
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
            border: none;
        }

        .btn-estimate-mobile:hover {
            background: linear-gradient(135deg, #4c84ff, #2E6BFF);
            box-shadow: 0 4px 20px rgba(46, 107, 255, 0.3);
            color: #fff;
        }

        .sidebar-backdrop {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(4, 10, 20, 0.6);
            backdrop-filter: blur(4px);
            z-index: 1048;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .sidebar-backdrop.show {
            opacity: 1;
            visibility: visible;
        }

        /* ==================== 按钮 ==================== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 24px;
            border-radius: var(--radius-pill);
            font-size: 15px;
            font-weight: 500;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            border: 1px solid transparent;
            cursor: pointer;
            text-decoration: none;
            line-height: 1;
        }

        .btn:focus-visible {
            box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.3);
        }

        .btn-primary {
            background: linear-gradient(135deg, #2E6BFF, #1a4ec4);
            color: #fff;
            box-shadow: 0 6px 20px rgba(46, 107, 255, 0.25);
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, #4c84ff, #2E6BFF);
            box-shadow: 0 8px 32px rgba(46, 107, 255, 0.4);
            transform: translateY(-1px);
            color: #fff;
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.14);
            color: var(--text-primary);
            backdrop-filter: blur(12px);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(201, 160, 99, 0.3);
            color: var(--text-primary);
            transform: translateY(-1px);
        }

        .btn-gold {
            background: linear-gradient(135deg, #d4b87d, var(--accent-gold));
            color: #1a1a1a;
            box-shadow: 0 6px 20px rgba(201, 160, 99, 0.2);
        }

        .btn-gold:hover {
            box-shadow: 0 8px 32px rgba(201, 160, 99, 0.35);
            transform: translateY(-2px);
            color: #1a1a1a;
        }

        .btn-lg {
            height: 54px;
            padding: 0 36px;
            font-size: 16px;
        }

        .btn-sm {
            height: 38px;
            padding: 0 18px;
            font-size: 13px;
        }

        .btn-block {
            width: 100%;
        }

        /* ==================== 标签 / 徽章 ==================== */
        .badge {
            display: inline-block;
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.04em;
            background: var(--accent-gold-light);
            color: var(--accent-gold);
            border: 1px solid rgba(201, 160, 99, 0.2);
            line-height: 1.4;
            white-space: nowrap;
        }

        .badge-blue {
            background: rgba(46, 107, 255, 0.12);
            color: var(--accent-blue-hover);
            border-color: rgba(46, 107, 255, 0.25);
        }

        .badge-ghost {
            background: transparent;
            border-color: var(--border-light);
            color: var(--text-secondary);
            font-weight: 400;
        }

        /* ==================== Hero ==================== */
        .hero {
            position: relative;
            min-height: 72vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            padding: 96px 0 72px;
            overflow: hidden;
            isolation: isolate;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                linear-gradient(105deg, rgba(8, 22, 38, 0.97) 15%, rgba(8, 22, 38, 0.65) 45%, rgba(8, 22, 38, 0.4) 70%, rgba(8, 22, 38, 0.75) 100%),
                url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center 20%;
            z-index: -2;
        }

        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 15% 10%, rgba(46, 107, 255, 0.15), transparent 60%);
            z-index: -1;
            pointer-events: none;
        }

        .hero-content {
            max-width: 720px;
            position: relative;
            z-index: 1;
        }

        .hero .kicker {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            font-weight: 500;
            color: var(--accent-gold);
            background: rgba(201, 160, 99, 0.08);
            border: 1px solid rgba(201, 160, 99, 0.25);
            padding: 6px 18px;
            border-radius: var(--radius-pill);
            margin-bottom: 18px;
        }

        .hero h1 {
            font-size: 50px;
            font-weight: 600;
            line-height: 1.22;
            letter-spacing: 0.02em;
            color: var(--text-primary);
            margin-bottom: 16px;
            text-shadow: 0 2px 30px rgba(0, 0, 0, 0.3);
        }

        .hero .subheadline {
            font-size: 18px;
            line-height: 1.8;
            color: #B8C6D9;
            max-width: 580px;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }

        .hero-trust {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--text-muted);
        }

        .hero-trust span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .hero-trust i {
            color: var(--accent-gold);
            font-size: 12px;
        }

        /* ==================== 卡片 ==================== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .card-grid .card-lg {
            grid-column: span 2;
        }

        .card {
            background: var(--bg-elevated);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 28px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(201, 160, 99, 0.3), transparent);
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(46, 107, 255, 0.25);
        }

        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(46, 107, 255, 0.12);
            border: 1px solid rgba(46, 107, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
        }

        .card-icon svg {
            width: 22px;
            height: 22px;
            fill: none;
            stroke: var(--accent-blue-hover);
            stroke-width: 1.8;
        }

        .card-icon.gold {
            background: rgba(201, 160, 99, 0.1);
            border-color: rgba(201, 160, 99, 0.2);
        }

        .card-icon.gold svg {
            stroke: var(--accent-gold);
        }

        .card h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 10px;
            letter-spacing: 0.01em;
        }

        .card p {
            font-size: 14.5px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .card-link-more {
            font-size: 14px;
            font-weight: 500;
            color: var(--accent-blue-hover);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }

        .card-link-more:hover {
            gap: 10px;
            color: var(--accent-gold);
        }

        .card-link-more i {
            font-size: 12px;
        }

        /* 非对称方案卡片区 */
        .solution-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .solution-card-wide {
            grid-column: 1 / -1;
            display: flex;
            gap: 24px;
            padding: 32px;
            align-items: center;
        }

        .solution-card-wide .card-content {
            flex: 1;
        }

        .solution-card-wide .card-media {
            width: 220px;
            border-radius: 12px;
            overflow: hidden;
            flex-shrink: 0;
        }

        /* ==================== 资讯/内容卡 ==================== */
        .news-featured {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 0;
            background: var(--bg-elevated);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition);
        }

        .news-featured:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .news-featured .news-media {
            min-height: 280px;
            background-size: cover;
            background-position: center;
        }

        .news-featured .news-body {
            padding: 30px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .news-featured .news-title {
            font-size: 22px;
            font-weight: 600;
            color: var(--text-primary);
            margin: 12px 0;
            line-height: 1.4;
        }

        .news-featured .news-excerpt {
            font-size: 14.5px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
            margin-top: auto;
        }

        .news-meta .badge {
            font-size: 11px;
            padding: 3px 10px;
        }

        .news-small-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-top: 24px;
        }

        .news-small-card {
            background: var(--bg-elevated);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 22px;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

        .news-small-card:hover {
            transform: translateY(-4px);
            border-color: rgba(46, 107, 255, 0.3);
            box-shadow: var(--shadow-hover);
        }

        .news-small-card .news-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin: 10px 0;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-small-card .news-excerpt {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .news-list-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            background: var(--bg-elevated);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            transition: all var(--transition);
        }

        .news-list-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateX(4px);
            border-color: rgba(201, 160, 99, 0.2);
        }

        .news-list-item .news-index {
            font-size: 18px;
            font-weight: 700;
            color: var(--accent-gold);
            width: 28px;
            flex-shrink: 0;
            text-align: center;
        }

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

        .news-list-item .news-title {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-bottom: 2px;
        }

        .news-list-item .news-info small {
            font-size: 12px;
            color: var(--text-muted);
        }

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

        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 80% 20%, rgba(46, 107, 255, 0.1), transparent 50%);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            position: relative;
            z-index: 1;
        }

        .stats-item {
            text-align: center;
            padding: 20px 0;
            border-right: 1px solid rgba(255, 255, 255, 0.08);
        }
        .stats-grid .stats-item:last-child {
            border-right: none;
        }

        .stats-number {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.2;
            background: linear-gradient(140deg, #f4dfb0, var(--accent-gold));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 6px;
        }

        .stats-label {
            font-size: 14px;
            color: #B8C6D9;
        }

        /* ==================== FAQ ==================== */
        .faq-section {
            max-width: 840px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding: 8px 0;
        }

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 8px;
            background: none;
            border: none;
            font-size: 17px;
            font-weight: 500;
            color: var(--text-primary);
            cursor: pointer;
            transition: color var(--transition);
            text-align: left;
        }

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

        .faq-question i {
            font-size: 14px;
            color: var(--text-muted);
            transition: transform var(--transition), color var(--transition);
            flex-shrink: 0;
        }

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

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

        .faq-answer-inner {
            padding: 0 24px 20px 8px;
            font-size: 14.5px;
            color: var(--text-secondary);
            line-height: 1.85;
            border-left: 2px solid var(--accent-gold);
            margin-left: 8px;
        }

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

        .faq-item.active .faq-question {
            color: var(--accent-gold);
        }

        /* ==================== CTA 条 ==================== */
        .cta-banner {
            background: linear-gradient(135deg, rgba(46, 107, 255, 0.12), rgba(201, 160, 99, 0.08)), var(--bg-secondary);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 48px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            margin-bottom: 76px;
        }

        .cta-banner h2 {
            font-size: 26px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .cta-banner p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 520px;
        }

        /* ==================== 表单弹层 ==================== */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 1060;
            background: rgba(4, 10, 20, 0.6);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }

        .modal-overlay.show {
            opacity: 1;
            visibility: visible;
        }

        .modal-box {
            width: 520px;
            max-width: calc(100vw - 32px);
            background: var(--bg-modal);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 32px;
            box-shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
            position: relative;
            transform: scale(0.95) translateY(8px);
            transition: transform 0.3s ease;
        }

        .modal-overlay.show .modal-box {
            transform: scale(1) translateY(0);
        }

        .modal-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 16px;
            background: rgba(255, 255, 255, 0.06);
            transition: all var(--transition);
            border: none;
        }

        .modal-close:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.12);
            transform: rotate(90deg);
        }

        .modal-title {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .modal-subtitle {
            font-size: 13.5px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-label {
            display: block;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 6px;
            font-weight: 400;
        }

        .form-control {
            width: 100%;
            height: 44px;
            padding: 0 14px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
            font-size: 14px;
            transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
        }

        .form-control::placeholder {
            color: var(--text-muted);
        }

        .form-control:focus {
            border-color: var(--accent-gold);
            box-shadow: 0 0 0 3px rgba(201, 160, 99, 0.15);
            background: rgba(255, 255, 255, 0.07);
            outline: none;
        }

        select.form-control {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%236E7F93' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            padding-right: 40px;
        }

        select.form-control option {
            background: var(--bg-secondary);
            color: var(--text-primary);
        }

        textarea.form-control {
            height: auto;
            min-height: 72px;
            padding: 10px 14px;
            resize: vertical;
        }

        .privacy-line {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 20px;
            margin-bottom: 16px;
            line-height: 1.5;
        }

        .privacy-line a {
            color: var(--text-secondary);
            text-decoration: underline;
            font-size: 12px;
        }

        .privacy-line input[type="checkbox"] {
            width: 15px;
            height: 15px;
            accent-color: var(--accent-gold);
            border-radius: 4px;
            border-color: rgba(255, 255, 255, 0.2);
        }

        /* ==================== 页脚 ==================== */
        .footer {
            background: #071321;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 48px 0 32px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand {
            font-size: 21px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 0.03em;
        }

        .footer-brand svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: var(--accent-gold);
            stroke-width: 2;
        }

        .footer-about {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .footer-h {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .footer-nav {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
            padding: 0;
        }

        .footer-nav li a,
        .footer-nav span {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color var(--transition);
            display: inline-block;
        }

        .footer-nav li a:hover {
            color: var(--accent-gold);
        }

        .footer-nav li span {
            color: var(--text-muted);
        }

        .footer-contacts div {
            margin-bottom: 12px;
        }

        .footer-contacts span {
            display: block;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
            font-size: 12px;
        }

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

        .footer-domain {
            font-family: monospace;
            opacity: 0.8;
        }

        /* ==================== 移动端抽屉 ==================== */
        .sidebar.drawer-open {
            transform: translateX(0);
        }

        .sidebar {
            transform: translateX(0);
        }

        /* ==================== 响应式断点 ==================== */
        @media (max-width: 1023px) {
            .sidebar {
                transform: translateX(-100%);
                box-shadow: 4px 0 24px rgba(0, 0, 0, 0.3);
            }

            .sidebar.open {
                transform: translateX(0);
            }

            .mobile-topbar {
                display: flex;
            }

            .main-content {
                margin-left: 0;
                padding-top: 64px;
            }

            .section {
                padding: 56px 0;
            }

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

            .card-grid .card-lg {
                grid-column: span 1;
            }

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

            .stats-item {
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }

            .stats-item:nth-child(even) {
                border-bottom: none;
            }

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

            .news-featured {
                grid-template-columns: 1fr;
            }

            .news-featured .news-media {
                min-height: 200px;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding: 0 20px;
            }

            .section {
                padding: 44px 0;
            }

            .section-header {
                margin-bottom: 30px;
            }

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

            .section-header p {
                font-size: 14.5px;
            }

            .hero {
                min-height: 62vh;
                padding: 80px 0 56px;
            }

            .hero h1 {
                font-size: 32px;
                line-height: 1.3;
            }

            .hero .subheadline {
                font-size: 16px;
            }

            .hero-actions {
                flex-direction: column;
            }

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

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

            .card-grid .card-lg {
                grid-column: span 1;
            }

            .solution-row {
                grid-template-columns: 1fr;
            }

            .solution-card-wide {
                flex-direction: column;
                padding: 24px;
            }

            .solution-card-wide .card-media {
                width: 100%;
            }

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

            .stats-number {
                font-size: 34px;
            }

            .stats-label {
                font-size: 12px;
            }

            .news-small-grid {
                grid-template-columns: 1fr;
            }

            .news-featured .news-body {
                padding: 24px;
            }

            .news-featured .news-title {
                font-size: 18px;
            }

            .cta-banner {
                padding: 28px 20px;
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }

            .cta-banner h2 {
                font-size: 20px;
            }

            .modal-box {
                padding: 24px 20px;
            }

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

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .btn-lg {
                height: 48px;
                padding: 0 24px;
                font-size: 15px;
            }
        }

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

            .mobile-brand span {
                font-size: 15px;
            }

            .btn-estimate-mobile {
                padding: 0 12px;
                font-size: 12px;
                height: 34px;
            }

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

            .stats-item {
                padding: 12px 0;
            }

            .stats-number {
                font-size: 28px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #081626;
            --bg-secondary: #0D1F33;
            --bg-card: rgba(255, 255, 255, 0.06);
            --accent-blue: #2E6BFF;
            --gold: #C9A063;
            --text-primary: #E8EEF7;
            --text-secondary: #9AA7B8;
            --text-muted: #6E7F93;
            --border-glass: rgba(255, 255, 255, 0.10);
            --radius-large: 20px;
            --radius-card: 16px;
            --radius-input: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.30);
            --shadow-hover: 0 16px 48px rgba(46, 107, 255, 0.25);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --sidebar-width: 240px;
            --topbar-height: 60px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 15px;
            overflow-x: hidden;
        }

        a {
            color: var(--accent-blue);
            text-decoration: none;
            transition: color 0.25s ease;
        }

        a:hover {
            color: #6b95ff;
        }

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

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

        button {
            border: none;
            background: none;
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

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

        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .sidebar {
            width: var(--sidebar-width);
            position: fixed;
            top: 0;
            left: 0;
            height: 100vh;
            background: rgba(8, 22, 38, 0.82);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-right: 1px solid var(--border-glass);
            z-index: 100;
            display: flex;
            flex-direction: column;
            padding: 24px 16px;
            transition: transform 0.25s ease;
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 32px;
            padding: 0 8px;
        }

        .sidebar-brand svg {
            width: 30px;
            height: 30px;
            fill: var(--gold);
            flex-shrink: 0;
        }

        .sidebar-brand-text {
            font-size: 18px;
            font-weight: 600;
            letter-spacing: 0.02em;
            color: var(--text-primary);
            line-height: 1.3;
        }

        .sidebar-nav-group-label {
            font-size: 11px;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.1em;
            padding: 0 12px;
            margin: 20px 0 8px;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 16px;
            height: 44px;
            border-radius: 8px;
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
            border-left: 3px solid transparent;
            letter-spacing: 0.02em;
        }

        .sidebar-nav a i {
            width: 20px;
            text-align: center;
            font-size: 16px;
        }

        .sidebar-nav a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
        }

        .sidebar-nav a.active {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            border-left-color: var(--gold);
            box-shadow: 0 0 20px rgba(46, 107, 255, 0.2);
        }

        .sidebar-nav a.active i {
            color: var(--gold);
        }

        .sidebar-bottom {
            margin-top: auto;
            padding-top: 20px;
            border-top: 1px solid var(--border-glass);
        }

        .sidebar-privacy {
            display: block;
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 12px;
            padding: 0 8px;
        }

        .sidebar-privacy:hover {
            color: var(--text-secondary);
        }

        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        .topbar {
            display: none;
            height: var(--topbar-height);
            background: rgba(8, 22, 38, 0.9);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-glass);
            position: sticky;
            top: 0;
            z-index: 99;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
        }

        .topbar-brand {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .topbar-brand svg {
            width: 22px;
            height: 22px;
            fill: var(--gold);
        }

        .topbar-brand-text {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .topbar-hamburger {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-primary);
            border-radius: 8px;
            transition: background 0.2s ease;
        }

        .topbar-hamburger:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        .topbar-cta {
            height: 36px;
            padding: 0 16px;
            font-size: 13px;
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(4, 10, 20, 0.6);
            backdrop-filter: blur(6px);
            z-index: 99;
            opacity: 0;
            transition: opacity 0.25s ease;
        }

        .sidebar-overlay.active {
            opacity: 1;
        }

        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(4, 10, 20, 0.6);
            backdrop-filter: blur(6px);
            z-index: 1000;
            display: none;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        .modal-overlay.active {
            display: flex;
        }

        .modal-content {
            background: linear-gradient(145deg, rgba(13, 31, 51, 0.98), rgba(8, 22, 38, 0.98));
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-large);
            max-width: 520px;
            width: 100%;
            padding: 32px;
            position: relative;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
            animation: modalIn 0.25s ease;
        }

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

        .modal-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            color: var(--text-secondary);
            font-size: 16px;
            transition: background 0.2s ease, color 0.2s ease;
        }

        .modal-close:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
        }

        .modal-title {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .modal-subtitle {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            height: 44px;
            border-radius: var(--radius-input);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            padding: 0 14px;
            font-size: 14px;
            color: var(--text-primary);
            outline: none;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .form-group textarea {
            height: 80px;
            padding: 12px 14px;
            resize: vertical;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--gold);
            box-shadow: 0 0 0 3px rgba(201, 160, 99, 0.1);
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-muted);
            font-size: 12px;
        }

        .form-group select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239AA7B8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            padding-right: 36px;
        }

        .form-group select option {
            background: var(--bg-secondary);
            color: var(--text-primary);
        }

        .form-check {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 16px;
        }

        .form-check input[type="checkbox"] {
            appearance: none;
            width: 16px;
            height: 16px;
            border-radius: 4px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--border-glass);
            position: relative;
            cursor: pointer;
            margin-top: 2px;
            flex-shrink: 0;
        }

        .form-check input[type="checkbox"]:checked {
            background: var(--accent-blue);
            border-color: var(--accent-blue);
        }

        .form-check input[type="checkbox"]:checked::after {
            content: '';
            position: absolute;
            left: 5px;
            top: 1px;
            width: 4px;
            height: 8px;
            border: solid #fff;
            border-width: 0 2px 2px 0;
            transform: rotate(45deg);
        }

        .form-check a {
            color: var(--accent-blue);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 24px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            letter-spacing: 0.02em;
            transition: all 0.25s ease;
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, #2E6BFF, #1e4fd6);
            color: var(--text-primary);
            box-shadow: 0 4px 20px rgba(46, 107, 255, 0.25);
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, #3d7aff, #2E6BFF);
            color: var(--text-primary);
            box-shadow: 0 6px 28px rgba(46, 107, 255, 0.4);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 12px rgba(46, 107, 255, 0.25);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--border-glass);
            color: var(--text-primary);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.18);
            color: var(--text-primary);
        }

        .btn-sm {
            height: 36px;
            padding: 0 18px;
            font-size: 13px;
        }

        .btn-gold {
            background: linear-gradient(135deg, #d4b07a, #c9a063);
            color: #081626;
            font-weight: 600;
            box-shadow: 0 4px 20px rgba(201, 160, 99, 0.2);
        }

        .btn-gold:hover {
            box-shadow: 0 6px 28px rgba(201, 160, 99, 0.35);
            transform: translateY(-1px);
            color: #081626;
        }

        .page-hero {
            position: relative;
            height: 300px;
            min-height: 260px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(105deg, rgba(8, 22, 38, 0.95) 20%, rgba(8, 22, 38, 0.70) 50%, rgba(8, 22, 38, 0.85) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            border-bottom: 1px solid var(--border-glass);
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 20% 20%, rgba(46, 107, 255, 0.15), transparent 60%);
        }

        .page-hero-content {
            position: relative;
            text-align: center;
            z-index: 2;
            padding: 0 24px;
        }

        .page-hero .kicker {
            font-size: 13px;
            color: var(--gold);
            letter-spacing: 0.1em;
            margin-bottom: 12px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .page-hero .kicker::before,
        .page-hero .kicker::after {
            content: '';
            width: 24px;
            height: 1px;
            background: rgba(201, 160, 99, 0.5);
        }

        .page-hero h1 {
            font-size: 42px;
            font-weight: 600;
            letter-spacing: 0.02em;
            line-height: 1.3;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }

        .page-hero p.sub {
            font-size: 16px;
            color: var(--text-secondary);
            margin-top: 12px;
        }

        .section {
            padding: 72px 0;
        }

        .section-alt {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-glass);
            border-bottom: 1px solid var(--border-glass);
        }

        .section-head {
            margin-bottom: 40px;
        }

        .section-head .tagline {
            font-size: 12px;
            color: var(--gold);
            text-transform: uppercase;
            letter-spacing: 0.12em;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .section-head .tagline::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--gold);
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 600;
            letter-spacing: 0.02em;
            line-height: 1.3;
        }

        .section-head .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            margin-top: 10px;
            max-width: 600px;
            line-height: 1.7;
        }

        .split-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .split-media {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .split-media img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }

        .split-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(8, 22, 38, 0.2), transparent 50%);
        }

        .split-content .split-label {
            font-size: 12px;
            color: var(--gold);
            text-transform: uppercase;
            letter-spacing: 0.12em;
            margin-bottom: 12px;
            display: block;
        }

        .split-content h3 {
            font-size: 28px;
            font-weight: 600;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .split-content p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .split-list {
            margin: 20px 0;
        }

        .split-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 1.6;
        }

        .split-list li::before {
            content: '\f058';
            font-family: 'Font Awesome 6 Free';
            font-weight: 400;
            color: var(--gold);
            font-size: 14px;
            margin-top: 3px;
        }

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

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 28px;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
            box-shadow: var(--shadow-card);
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(46, 107, 255, 0.4);
        }

        .feature-card.feature-wide {
            grid-column: span 2;
        }

        .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(46, 107, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .feature-icon svg {
            width: 22px;
            height: 22px;
            fill: none;
            stroke: var(--accent-blue);
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .feature-card:nth-child(2) .feature-icon,
        .feature-card:nth-child(4) .feature-icon {
            background: rgba(201, 160, 99, 0.12);
        }

        .feature-card:nth-child(2) .feature-icon svg,
        .feature-card:nth-child(4) .feature-icon svg {
            stroke: var(--gold);
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            letter-spacing: 0.01em;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .feature-card .feature-link {
            font-size: 13px;
            color: var(--accent-blue);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
            transition: gap 0.2s ease;
        }

        .feature-card .feature-link:hover {
            gap: 10px;
        }

        .category-light-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 24px;
        }

        .category-item {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .category-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .category-item.tall {
            background: linear-gradient(145deg, rgba(46, 107, 255, 0.08), rgba(8, 22, 38, 0.8));
            border-color: rgba(46, 107, 255, 0.2);
        }

        .category-item .cat-icon {
            font-size: 26px;
            margin-bottom: 14px;
            color: var(--gold);
        }

        .category-item h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .category-item p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .category-item .cat-tag {
            display: inline-block;
            font-size: 11px;
            color: var(--gold);
            background: rgba(201, 160, 99, 0.1);
            border-radius: 4px;
            padding: 2px 8px;
            margin-top: 14px;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-glass);
            padding: 0;
            transition: border-color 0.2s ease;
        }

        .faq-item:first-child {
            border-top: 1px solid var(--border-glass);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 0;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-primary);
            cursor: pointer;
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            letter-spacing: 0.01em;
            transition: color 0.2s ease;
        }

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

        .faq-question::after {
            content: '\f067';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 12px;
            color: var(--text-muted);
            transition: transform 0.3s ease, color 0.2s ease;
        }

        .faq-item.active .faq-question::after {
            content: '\f068';
            transform: rotate(180deg);
            color: var(--gold);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-bottom: 20px;
        }

        .faq-item.active .faq-question {
            color: var(--gold);
        }

        .cta-band {
            background: linear-gradient(135deg, rgba(46, 107, 255, 0.12), rgba(201, 160, 99, 0.08)), var(--bg-secondary);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-large);
            padding: 48px;
            text-align: center;
        }

        .cta-band h2 {
            font-size: 28px;
            font-weight: 600;
            letter-spacing: 0.02em;
            margin-bottom: 12px;
        }

        .cta-band p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

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

        .footer {
            background: rgba(6, 16, 28, 0.8);
            border-top: 1px solid var(--border-glass);
            padding: 48px 0 24px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 600;
            letter-spacing: 0.02em;
            color: var(--text-primary);
        }

        .footer-brand svg {
            width: 24px;
            height: 24px;
            fill: var(--gold);
        }

        .footer-about {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-top: 16px;
        }

        .footer-h {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }

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

        .footer-nav a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }

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

        .footer-contacts {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .footer-contacts span {
            display: block;
            margin-bottom: 8px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-glass);
            padding-top: 24px;
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom a {
            font-size: 13px;
        }

        .footer-domain {
            font-family: monospace;
            font-size: 12px;
            opacity: 0.8;
        }

        @media (max-width: 1023.98px) {
            .sidebar {
                transform: translateX(-100%);
            }

            .sidebar.open {
                transform: translateX(0);
            }

            .main-content {
                margin-left: 0;
            }

            .topbar {
                display: flex;
            }

            .sidebar-overlay {
                display: block;
            }

            .page-hero h1 {
                font-size: 36px;
            }

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

            .category-light-grid {
                grid-template-columns: 1fr 1fr;
            }

            .category-item.tall {
                grid-column: span 2;
            }

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

            .feature-card.feature-wide {
                grid-column: span 1;
            }

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

        @media (max-width: 639.98px) {
            .section {
                padding: 48px 0;
            }

            .container {
                padding: 0 16px;
            }

            .page-hero {
                height: 260px;
            }

            .page-hero h1 {
                font-size: 30px;
            }

            .page-hero p.sub {
                font-size: 14px;
            }

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

            .category-light-grid {
                grid-template-columns: 1fr;
            }

            .category-item.tall {
                grid-column: span 1;
            }

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

            .feature-card {
                padding: 20px;
            }

            .cta-band {
                padding: 32px 20px;
            }

            .cta-band .btn-group {
                flex-direction: column;
            }

            .cta-band .btn-group .btn {
                width: 100%;
            }

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

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

            .split-media img {
                height: 220px;
            }

            .split-content h3 {
                font-size: 22px;
            }

            .faq-question {
                font-size: 14px;
                padding: 16px 0;
            }

            .faq-answer {
                font-size: 13px;
            }

            .modal-content {
                padding: 24px 16px;
                border-radius: 16px;
            }

            .btn-group {
                flex-direction: column;
                width: 100%;
            }

            .btn-group .btn {
                width: 100%;
            }
        }

/* roulang page: article */
:root {
    --bg-primary: #081626;
    --bg-secondary: #0D1F33;
    --accent-blue: #2E6BFF;
    --accent-gold: #C9A063;
    --text-primary: #E8EEF7;
    --text-secondary: #9AA7B8;
    --text-muted: #6E7F93;
    --glass-bg: rgba(255,255,255,0.06);
    --glass-border: rgba(255,255,255,0.10);
    --radius-lg: 20px;
    --radius-md: 16px;
    --radius-sm: 12px;
    --radius-pill: 999px;
    --shadow-card: 0 12px 32px rgba(0,0,0,0.30);
    --shadow-hover: 0 16px 48px rgba(46,107,255,0.25);
    --transition: all 0.25s ease;
    --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    --sidebar-width: 240px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-stack);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    height: 44px; padding: 0 24px; border-radius: var(--radius-pill);
    font-size: 14px; font-weight: 600; border: none; transition: var(--transition); line-height: 1;
    cursor: pointer;
}
.btn-primary {
    background: linear-gradient(135deg, #2E6BFF, #1A4FD4);
    color: #fff;
    box-shadow: 0 4px 20px rgba(46,107,255,0.30);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(46,107,255,0.45);
    filter: brightness(1.08);
}
.btn-gold {
    background: linear-gradient(135deg, #C9A063, #A88446);
    color: #081626;
    box-shadow: 0 4px 20px rgba(201,160,99,0.25);
}
.btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(201,160,99,0.4);
}
.btn-block { width: 100%; }
.btn-lg { height: 52px; padding: 0 36px; font-size: 16px; }
.btn-sm { height: 36px; padding: 0 18px; font-size: 13px; }
.btn-pill { border-radius: var(--radius-pill); }
.sidebar {
    position: fixed; left: 0; top: 0; width: var(--sidebar-width); height: 100vh;
    background: rgba(8,22,38,0.82);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid rgba(255,255,255,0.06);
    display: flex; flex-direction: column; z-index: 200; padding: 24px 0;
}
.sidebar-brand {
    display: flex; align-items: center; gap: 12px;
    padding: 0 20px 24px; border-bottom: 1px solid rgba(255,255,255,0.06); margin-bottom: 16px;
}
.sidebar-brand .brand-icon { flex-shrink: 0; }
.sidebar-brand span { font-size: 17px; font-weight: 600; letter-spacing: 0.02em; color: var(--text-primary); line-height: 1.2; }
.sidebar-nav { flex: 1; padding: 0 12px; overflow-y: auto; }
.sidebar-nav-group-label {
    font-size: 11px; color: var(--text-muted); letter-spacing: 0.08em;
    text-transform: uppercase; padding: 12px 12px 6px; font-weight: 600;
}
.sidebar-nav a {
    display: flex; align-items: center; gap: 12px; height: 44px; padding: 0 12px;
    border-radius: 8px; font-size: 14px; color: var(--text-secondary); transition: var(--transition); position: relative;
}
.sidebar-nav a i { width: 18px; text-align: center; font-size: 15px; }
.sidebar-nav a:hover { background: rgba(255,255,255,0.06); color: var(--text-primary); }
.sidebar-nav a.active {
    background: rgba(255,255,255,0.06); color: var(--accent-blue);
    box-shadow: inset 3px 0 0 var(--accent-blue);
    text-shadow: 0 0 20px rgba(46,107,255,0.5);
}
.sidebar-bottom { padding: 16px 20px 8px; border-top: 1px solid rgba(255,255,255,0.06); }
.sidebar-bottom .privacy-link {
    display: block; text-align: center; font-size: 12px;
    color: var(--text-muted); margin-top: 12px;
}
.mobile-header {
    display: none; position: fixed; top: 0; left: 0; right: 0; height: 60px;
    background: rgba(8,22,38,0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    z-index: 300; align-items: center; justify-content: space-between; padding: 0 16px;
}
.mobile-menu-toggle {
    width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
    background: transparent; border: 1px solid rgba(255,255,255,0.12); border-radius: 10px;
    color: var(--text-primary); font-size: 16px;
}
.mobile-brand { font-size: 16px; font-weight: 600; color: var(--text-primary); }
.btn-mobile-cta { height: 36px; padding: 0 18px; font-size: 13px; }
.sidebar-overlay {
    display: none; position: fixed; inset: 0; background: rgba(4,10,20,0.6);
    backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
    z-index: 150; opacity: 0; transition: opacity 0.25s ease;
}
.main-content { margin-left: var(--sidebar-width); min-height: 100vh; display: flex; flex-direction: column; }
.article-page {
    background: var(--bg-primary); position: relative; padding-top: 56px; flex: 1;
}
.article-page::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 380px;
    background:
        radial-gradient(ellipse at 20% 0%, rgba(46,107,255,0.12), transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(201,160,99,0.06), transparent 50%);
    pointer-events: none; z-index: 0;
}
.article-container { position: relative; z-index: 1; max-width: 860px; }
.breadcrumb {
    display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
    font-size: 13px; color: var(--text-muted); margin-bottom: 24px;
}
.breadcrumb a { color: var(--text-secondary); transition: var(--transition); }
.breadcrumb a:hover { color: var(--accent-blue); }
.breadcrumb-sep { color: var(--text-muted); opacity: 0.5; }
.breadcrumb-current { color: var(--text-primary); max-width: 300px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.article-header { margin-bottom: 40px; }
.article-badge {
    display: inline-flex; align-items: center; padding: 4px 14px;
    border-radius: var(--radius-pill); font-size: 12px; font-weight: 600;
    color: var(--accent-gold); background: rgba(201,160,99,0.10);
    border: 1px solid rgba(201,160,99,0.25); margin-bottom: 16px; letter-spacing: 0.04em;
}
.article-title {
    font-size: 38px; font-weight: 600; line-height: 1.35; letter-spacing: 0.01em;
    color: var(--text-primary); margin-bottom: 16px; max-width: 760px;
}
.article-meta {
    display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
    font-size: 13px; color: var(--text-muted);
}
.article-meta i { margin-right: 6px; color: var(--text-muted); }
.article-content {
    background: rgba(13,31,51,0.35);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-lg);
    padding: 40px 44px;
    font-size: 16px; line-height: 1.8; color: #C5D0DF;
}
.article-content h2 {
    font-size: 24px; font-weight: 600; color: var(--text-primary);
    margin: 40px 0 16px; line-height: 1.4; letter-spacing: 0.01em;
    padding-left: 16px; border-left: 3px solid var(--accent-gold);
}
.article-content h3 {
    font-size: 20px; font-weight: 600; color: var(--text-primary);
    margin: 32px 0 12px; line-height: 1.4;
}
.article-content p { margin-bottom: 20px; }
.article-content a { color: var(--accent-blue); border-bottom: 1px solid rgba(46,107,255,0.3); transition: var(--transition); }
.article-content a:hover { color: var(--accent-gold); border-color: var(--accent-gold); }
.article-content ul, .article-content ol { margin: 0 0 20px; padding-left: 24px; }
.article-content li { margin-bottom: 8px; }
.article-content ul li::marker { color: var(--accent-gold); }
.article-content img { border-radius: 12px; margin: 24px 0; }
.article-content figure { margin: 28px 0; }
.article-content figcaption { font-size: 13px; color: var(--text-muted); text-align: center; margin-top: 10px; }
.article-content blockquote {
    border-left: 3px solid var(--accent-gold);
    background: rgba(201,160,99,0.06);
    padding: 16px 24px; margin: 24px 0; border-radius: 0 12px 12px 0;
    color: #B8C6D9; font-style: italic;
}
.article-content pre {
    background: #0A1524; border: 1px solid rgba(255,255,255,0.08);
    padding: 16px; border-radius: 12px; overflow-x: auto; margin-bottom: 20px;
}
.article-content code { font-family: "SFMono-Regular", Consolas, monospace; font-size: 14px; }
.article-content table { width: 100%; border-collapse: collapse; margin-bottom: 20px; }
.article-content th, .article-content td {
    border: 1px solid rgba(255,255,255,0.1); padding: 10px 14px; text-align: left;
}
.article-content th { background: rgba(255,255,255,0.04); }
.article-content hr { border: none; border-top: 1px solid rgba(255,255,255,0.1); margin: 24px 0; }
.article-not-found {
    text-align: center; padding: 80px 24px;
    background: rgba(13,31,51,0.35);
    border-radius: var(--radius-lg); border: 1px solid rgba(255,255,255,0.06);
}
.empty-icon {
    width: 72px; height: 72px; margin: 0 auto 24px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%; background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08); font-size: 28px; color: var(--text-muted);
}
.article-not-found h3 { font-size: 20px; color: var(--text-primary); margin-bottom: 12px; }
.article-not-found p { color: var(--text-muted); margin-bottom: 24px; }
.article-pager {
    display: flex; justify-content: space-between; gap: 16px; margin: 32px 0 56px;
}
.pager-link {
    display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px;
    border-radius: var(--radius-sm); background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.08); color: var(--text-secondary);
    font-size: 14px; transition: var(--transition);
}
.pager-link:hover {
    background: rgba(255,255,255,0.06); border-color: var(--accent-blue); color: var(--text-primary);
}
.related-section { padding: 72px 0; background: var(--bg-secondary); position: relative; }
.section-header { margin-bottom: 40px; }
.section-header h2 {
    font-size: 30px; font-weight: 600; color: var(--text-primary);
    margin-bottom: 8px; letter-spacing: 0.02em;
}
.section-header h2::before {
    content: ''; display: inline-block; width: 4px; height: 22px;
    background: var(--accent-gold); border-radius: 2px; margin-right: 12px; vertical-align: -2px;
}
.section-header p { font-size: 14px; color: var(--text-muted); padding-left: 16px; }
.related-grid { display: block; }
.related-grid .cell { margin-bottom: 24px; }
.related-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-md); overflow: hidden;
    transition: var(--transition); display: flex; flex-direction: column; height: 100%;
}
.related-card:hover {
    transform: translateY(-4px); box-shadow: var(--shadow-hover);
    border-color: rgba(46,107,255,0.4);
}
.related-cover { aspect-ratio: 16/10; overflow: hidden; }
.related-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.35s ease; }
.related-card:hover .related-cover img { transform: scale(1.04); }
.related-body { padding: 20px; flex: 1; }
.related-tag {
    display: inline-block; padding: 3px 10px; font-size: 12px;
    border-radius: var(--radius-pill); color: var(--accent-gold);
    background: rgba(201,160,99,0.1); border: 1px solid rgba(201,160,99,0.2); margin-bottom: 10px;
}
.related-body h3 {
    font-size: 16px; font-weight: 600; color: var(--text-primary);
    line-height: 1.5; margin-bottom: 8px;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.related-body p { font-size: 13px; color: var(--text-muted); margin-bottom: 0; }
.faq-section { padding: 72px 0; background: var(--bg-primary); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid rgba(255,255,255,0.08); }
.faq-item:first-child { border-top: 1px solid rgba(255,255,255,0.08); }
.faq-question {
    display: flex; justify-content: space-between; align-items: center; gap: 16px;
    padding: 22px 8px; background: none; border: none; width: 100%; text-align: left;
    font-size: 16px; font-weight: 600; color: var(--text-primary); transition: color 0.2s ease;
}
.faq-question:hover { color: var(--accent-gold); }
.faq-question .faq-icon {
    flex-shrink: 0; width: 24px; height: 24px;
    display: flex; align-items: center; justify-content: center;
    color: var(--text-muted); transition: transform 0.3s ease, color 0.3s ease;
}
.faq-item.active .faq-icon { transform: rotate(180deg); color: var(--accent-gold); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-item.active .faq-answer { max-height: 500px; }
.faq-answer-inner {
    padding: 0 8px 18px; font-size: 14px; line-height: 1.7;
    color: var(--text-secondary); border-left: 3px solid var(--accent-gold);
    margin-left: 8px; padding-left: 14px;
}
.article-cta { padding: 72px 0; text-align: center; background: var(--bg-secondary); }
.article-cta h3 { font-size: 26px; color: var(--text-primary); font-weight: 600; margin-bottom: 12px; }
.article-cta p { color: var(--text-secondary); font-size: 15px; margin-bottom: 28px; }
.footer { background: #060F1C; border-top: 1px solid rgba(255,255,255,0.06); padding: 56px 0 24px; }
.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 40px;
}
.footer-brand {
    display: flex; align-items: center; gap: 10px; font-size: 16px;
    font-weight: 600; color: var(--text-primary); margin-bottom: 14px;
}
.footer-about {
    font-size: 13px; color: var(--text-muted); line-height: 1.7; max-width: 260px;
}
.footer-h { font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 16px; }
.footer-nav { list-style: none; }
.footer-nav li { margin-bottom: 10px; }
.footer-nav a { font-size: 13px; color: var(--text-secondary); transition: var(--transition); }
.footer-nav a:hover { color: var(--accent-gold); }
.footer-contacts { font-size: 13px; color: var(--text-secondary); line-height: 1.8; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06); padding-top: 20px;
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 12px; font-size: 12px; color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent-blue); }
.form-modal {
    display: none; position: fixed; inset: 0; z-index: 1000;
}
.form-modal.active { display: block; }
.form-modal-overlay {
    position: absolute; inset: 0;
    background: rgba(4,10,20,0.6);
    backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.form-modal-content {
    position: relative; z-index: 1; width: 520px; max-width: calc(100vw - 32px);
    margin: 8vh auto 0; background: linear-gradient(145deg, #10243D, #0A1524);
    border: 1px solid rgba(255,255,255,0.12); border-radius: var(--radius-lg);
    box-shadow: 0 24px 64px rgba(0,0,0,0.6); padding: 32px;
    max-height: 84vh; overflow-y: auto;
}
.form-modal-close {
    position: absolute; top: 14px; right: 16px; width: 32px; height: 32px;
    display: flex; align-items: center; justify-content: center; border-radius: 50%;
    border: none; background: rgba(255,255,255,0.06); color: var(--text-secondary);
    font-size: 18px; transition: var(--transition);
}
.form-modal-close:hover { background: rgba(255,255,255,0.12); color: var(--text-primary); }
.form-modal-content h3 { font-size: 20px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }
.form-modal-content > p { font-size: 13px; color: var(--text-muted); margin-bottom: 24px; }
.form-modal-content label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; }
.form-modal-content input[type="text"],
.form-modal-content input[type="tel"],
.form-modal-content select,
.form-modal-content textarea {
    width: 100%; height: 44px; background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1); border-radius: 12px;
    padding: 0 14px; color: var(--text-primary); font-size: 14px;
    outline: none; transition: var(--transition); margin-bottom: 16px;
}
.form-modal-content textarea { height: 80px; padding-top: 10px; resize: vertical; }
.form-modal-content input:focus,
.form-modal-content select:focus,
.form-modal-content textarea:focus {
    border-color: var(--accent-gold); box-shadow: 0 0 8px rgba(201,160,99,0.2);
}
.form-modal-content input::placeholder,
.form-modal-content textarea::placeholder { color: var(--text-muted); font-size: 13px; }
.form-modal-content select {
    appearance: none; -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239AA7B8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 14px center;
}
.privacy-consent {
    display: flex; align-items: center; gap: 8px;
    font-size: 12px; color: var(--text-muted); margin: 4px 0 16px;
}
.privacy-consent input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--accent-gold); }
.privacy-consent a { color: var(--accent-blue); }
.form-modal-content .btn { margin-top: 4px; }
@media (max-width: 1023px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.25s ease;
        box-shadow: 8px 0 32px rgba(0,0,0,0.4);
    }
    .sidebar.open { transform: translateX(0); }
    .mobile-header { display: flex; }
    .main-content { margin-left: 0; }
    .sidebar-overlay.active { display: block; opacity: 1; }
    .article-page { padding-top: 76px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .related-section { padding: 56px 0; }
    .faq-section { padding: 56px 0; }
    .article-cta { padding: 56px 0; }
}
@media (max-width: 767px) {
    .article-page { padding-top: 68px; }
    .article-container { padding: 0 16px; }
    .article-title { font-size: 26px; }
    .article-meta { gap: 12px; font-size: 12px; }
    .article-content { padding: 24px 20px; font-size: 15px; }
    .article-content h2 { font-size: 21px; }
    .article-content h3 { font-size: 18px; }
    .related-body h3 { font-size: 15px; }
    .article-cta h3 { font-size: 22px; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
    .section-header h2 { font-size: 24px; }
    .pager-link { font-size: 13px; padding: 10px 14px; }
    .form-modal-overlay { position: fixed; }
    .form-modal-content {
        width: 100%; max-width: 100%; margin: 0; border-radius: 20px 20px 0 0;
        max-height: 90vh; padding: 28px 20px calc(24px + env(safe-area-inset-bottom));
    }
}
@media (max-width: 520px) {
    .article-title { font-size: 24px; }
    .breadcrumb { font-size: 12px; }
    .related-grid { margin: 0 -8px; }
    .btn-lg { height: 48px; padding: 0 28px; font-size: 15px; }
    .faq-question { font-size: 15px; padding: 18px 4px; }
}