/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1B6BB3;
            --primary-dark: #14578F;
            --primary-light: #EAF1F8;
            --accent: #F47C20;
            --accent-dark: #D96A0F;
            --accent-light: #FEF0E4;
            --success: #16A34A;
            --bg: #F5F8FC;
            --card-bg: #FFFFFF;
            --text: #1F2937;
            --text-secondary: #6B7280;
            --border: #E5EAF1;
            --dark-bg: #0F2E4A;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-pill: 999px;
            --shadow: 0 4px 20px rgba(27, 107, 179, 0.08);
            --shadow-hover: 0 8px 32px rgba(27, 107, 179, 0.14);
            --transition: 0.3s ease;
            --container: 1200px;
        }
        
        /* ===== Reset & 基础 ===== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, "PingFang SC", "Segoe UI", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul, ol {
            list-style: none;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section {
            padding: 80px 0;
        }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 40px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            color: var(--text-secondary);
            font-size: 15px;
            margin-top: 6px;
            line-height: 1.5;
        }
        
        /* ===== 按钮体系 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            font-size: 16px;
            font-weight: 600;
            line-height: 1.2;
            text-decoration: none;
            transition: all 0.25s ease;
            border: 1px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(27, 107, 179, 0.25);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: #fff;
            box-shadow: 0 6px 20px rgba(27, 107, 179, 0.35);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            background-color: #0d4a7d;
            transform: translateY(0);
        }
        .btn-accent {
            background-color: var(--accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(244, 124, 32, 0.3);
        }
        .btn-accent:hover {
            background-color: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(244, 124, 32, 0.4);
        }
        .btn-accent:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(244, 124, 32, 0.3);
        }
        .btn-outline {
            background-color: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
        }
        .btn-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 0;
            color: var(--primary);
            font-weight: 600;
            font-size: 15px;
            background: none;
        }
        .btn-link .arrow {
            transition: transform 0.2s ease;
        }
        .btn-link:hover .arrow {
            transform: translateX(4px);
        }
        button:focus-visible, a:focus-visible, input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        
        /* ===== 顶部双栏导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: var(--card-bg);
            border-bottom: 1px solid var(--border);
        }
        .header-main {
            background: var(--dark-bg);
            padding: 14px 0;
        }
        .header-main .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 20px;
            letter-spacing: -0.5px;
            box-shadow: 0 4px 12px rgba(27, 107, 179, 0.3);
        }
        .logo-icon span {
            color: var(--accent);
        }
        .logo-text {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .logo-text:hover {
            color: #fff;
        }
        .header-search {
            flex: 1;
            max-width: 480px;
            position: relative;
        }
        .header-search input {
            width: 100%;
            height: 42px;
            border-radius: var(--radius-pill);
            border: 1px solid transparent;
            background: rgba(255, 255, 255, 0.12);
            padding: 0 20px 0 42px;
            font-size: 14px;
            color: #fff;
            transition: all 0.25s ease;
        }
        .header-search input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        .header-search input:focus {
            outline: none;
            background: rgba(255, 255, 255, 0.2);
            border-color: rgba(255, 255, 255, 0.3);
            box-shadow: 0 0 0 4px rgba(27, 107, 179, 0.3);
        }
        .header-search .search-icon {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: rgba(255, 255, 255, 0.5);
            font-size: 16px;
            pointer-events: none;
        }
        .header-cta {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .header-cta .btn-accent {
            padding: 10px 22px;
            font-size: 15px;
        }
        .header-nav {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
        }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 8px 0;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-tabs::-webkit-scrollbar {
            display: none;
        }
        .nav-tabs a {
            display: inline-block;
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all 0.25s ease;
            border: 1px solid transparent;
        }
        .nav-tabs a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-tabs a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(27, 107, 179, 0.25);
        }
        
        /* ===== Hero ===== */
        .hero {
            position: relative;
            background: linear-gradient(135deg, var(--dark-bg) 0%, #1a4a72 40%, #1B6BB3 100%);
            padding: 80px 0 90px;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            z-index: 0;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 100%;
            height: 40px;
            background: var(--bg);
            border-radius: 24px 24px 0 0;
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 60px;
            align-items: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero-badge .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 8px var(--success);
        }
        .hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .hero-title-accent {
            color: var(--accent);
            position: relative;
        }
        .hero-lead {
            font-size: 16px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.8);
            max-width: 480px;
            margin-bottom: 28px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            margin-bottom: 36px;
            flex-wrap: wrap;
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 24px;
        }
        .hero-stat {
            text-align: left;
        }
        .hero-stat .num {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }
        .hero-stat .label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }
        .hero-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 24px 64px rgba(0, 0, 0, 0.35);
        }
        .hero-visual img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }
        .hero-visual .play-btn {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: rgba(244, 124, 32, 0.9);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 24px;
            box-shadow: 0 8px 32px rgba(244, 124, 32, 0.5);
            transition: transform 0.3s ease, background 0.3s ease;
            animation: pulse 2s infinite;
        }
        .hero-visual .play-btn:hover {
            transform: translate(-50%, -50%) scale(1.1);
            background: var(--accent-dark);
        }
        @keyframes pulse {
            0%, 100% { box-shadow: 0 8px 32px rgba(244, 124, 32, 0.5); }
            50% { box-shadow: 0 8px 48px rgba(244, 124, 32, 0.7); }
        }
        .hero-visual .play-label {
            position: absolute;
            bottom: 16px;
            left: 16px;
            background: rgba(15, 46, 74, 0.85);
            color: #fff;
            font-size: 13px;
            padding: 6px 12px;
            border-radius: 6px;
            backdrop-filter: blur(4px);
        }
        
        /* ===== 可信数据带 ===== */
        .trust-band {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            padding: 32px 0;
        }
        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
        }
        .trust-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            padding: 8px 24px;
            border-right: 1px solid var(--border);
        }
        .trust-item:last-child {
            border-right: none;
        }
        .trust-item .num {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }
        .trust-item .num-suffix {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
        }
        .trust-item .label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 6px;
        }
        
        /* ===== 卖点三连 ===== */
        .features {
            background: var(--bg);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            position: relative;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow);
            border: 1px solid transparent;
            transition: all var(--transition);
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--primary);
            opacity: 0;
            transition: opacity var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card:nth-child(3) {
            border: 1px solid var(--border);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            transition: all 0.3s ease;
        }
        .feature-icon svg {
            width: 28px;
            height: 28px;
            stroke: var(--primary);
            fill: none;
            stroke-width: 2;
            transition: all 0.3s ease;
        }
        .feature-card:hover .feature-icon {
            background: var(--accent);
        }
        .feature-card:hover .feature-icon svg {
            stroke: #fff;
        }
        .feature-card:nth-child(3) .feature-icon svg {
            stroke-width: 1.6;
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        
        /* ===== 场景演示 ===== */
        .scenario {
            background: #EDF3FA;
            padding: 80px 0;
        }
        .scenario-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .scenario-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
        }
        .scenario-media img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }
        .scenario-content {
            display: flex;
            flex-direction: column;
        }
        .scenario-content .section-title {
            margin-bottom: 24px;
        }
        .scenario-list {
            margin-bottom: 24px;
        }
        .scenario-list-item {
            display: flex;
            gap: 16px;
            padding: 20px 0;
            border-bottom: 1px solid #D8E2EE;
        }
        .scenario-list-item:last-child {
            border-bottom: none;
        }
        .scenario-list-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
        }
        .scenario-list-icon svg {
            width: 20px;
            height: 20px;
            stroke: var(--primary);
            fill: none;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .scenario-list-item h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .scenario-list-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .scenario-content .btn-link {
            align-self: flex-start;
        }
        
        /* ===== 最新资讯 ===== */
        .news-section {
            background: var(--bg);
        }
        .news-list {
            display: flex;
            flex-direction: column;
        }
        .news-item {
            display: flex;
            align-items: stretch;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            transition: background 0.3s ease;
        }
        .news-item:first-child {
            padding-top: 0;
        }
        .news-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .news-thumb {
            flex-shrink: 0;
            width: 120px;
            height: 90px;
            border-radius: 8px;
            overflow: hidden;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .news-item:hover .news-thumb img {
            transform: scale(1.05);
        }
        .news-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-width: 0;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 6px;
            flex-wrap: wrap;
        }
        .news-chip {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            padding: 2px 10px;
            border-radius: 4px;
            font-weight: 500;
            line-height: 1.6;
        }
        .news-date {
            font-size: 13px;
            color: var(--text-secondary);
        }
        .news-content h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 6px;
            color: var(--text);
            transition: color 0.25s ease;
        }
        .news-content h3:hover {
            color: var(--primary);
        }
        .news-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
        }
        .news-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-link .arrow {
            transition: transform 0.2s ease;
        }
        .news-link:hover .arrow {
            transform: translateX(4px);
        }
        .news-empty {
            border: 2px dashed #CBD5E1;
            border-radius: var(--radius-lg);
            padding: 60px 24px;
            text-align: center;
            color: var(--text-secondary);
        }
        .news-empty svg {
            width: 48px;
            height: 48px;
            margin-bottom: 12px;
            stroke: #94A3B8;
            fill: none;
            stroke-width: 1.5;
        }
        .news-empty .msg {
            font-size: 15px;
        }
        
        /* ===== 社会认同 ===== */
        .social-proof {
            background: var(--dark-bg);
            padding: 80px 0;
        }
        .proof-banner {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-bottom: 56px;
            text-align: center;
        }
        .proof-banner .item {
            padding: 16px 0;
            border-right: 1px solid rgba(255, 255, 255, 0.12);
        }
        .proof-banner .item:last-child {
            border-right: none;
        }
        .proof-banner .num {
            font-size: 40px;
            font-weight: 800;
            color: var(--accent);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }
        .proof-banner .label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
        }
        .proof-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .proof-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
            transition: border-color 0.3s ease;
            border: 1px solid transparent;
        }
        .proof-card:hover {
            border-color: var(--primary);
        }
        .proof-card-header {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 16px;
        }
        .proof-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .proof-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
        }
        .proof-role {
            font-size: 13px;
            color: var(--text-secondary);
        }
        .proof-stars {
            color: var(--accent);
            margin-bottom: 10px;
            font-size: 14px;
            letter-spacing: 2px;
        }
        .proof-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        
        /* ===== FAQ ===== */
        .faq {
            background: var(--card-bg);
            padding: 80px 0;
        }
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 8px 0;
        }
        .faq-item:first-child {
            border-top: 1px solid var(--border);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 18px 0;
            cursor: pointer;
            text-align: left;
            width: 100%;
            background: none;
            border: none;
        }
        .faq-question h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
            padding-left: 16px;
            border-left: 4px solid var(--primary);
        }
        .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 300;
            color: var(--primary);
            transition: transform 0.3s ease, background 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            display: none;
            padding: 0 0 18px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        
        /* ===== CTA横幅 ===== */
        .cta-banner {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 60px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }
        .cta-banner h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-banner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 500px;
            margin: 0 auto 28px;
            position: relative;
            z-index: 1;
        }
        .cta-banner .btn-accent {
            font-size: 18px;
            padding: 16px 40px;
            position: relative;
            z-index: 1;
        }
        
        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark-bg);
            padding: 48px 0 28px;
            color: #94A3B8;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.2fr;
            gap: 48px;
            margin-bottom: 40px;
        }
        .footer-brand .logo-text {
            margin-bottom: 12px;
            display: block;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #94A3B8;
            max-width: 260px;
        }
        .footer-social {
            display: flex;
            gap: 10px;
            margin-top: 20px;
        }
        .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: #94A3B8;
            font-size: 14px;
            transition: all 0.3s ease;
        }
        .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            color: #94A3B8;
            font-size: 14px;
            transition: color 0.3s ease, padding-left 0.3s ease;
            display: inline-block;
        }
        .footer-col ul a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #94A3B8;
            margin-bottom: 12px;
        }
        .footer-contact li svg {
            width: 16px;
            height: 16px;
            stroke: var(--accent);
            fill: none;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
            flex-shrink: 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 13px;
            color: #94A3B8;
        }
        .footer-bottom a {
            color: #94A3B8;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        
        /* ===== 底部固定转化条 ===== */
        .bottom-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 12px 24px;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
            transform: translateY(100%);
            transition: transform 0.3s ease;
        }
        .bottom-cta.visible {
            transform: translateY(0);
        }
        .bottom-cta .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            max-width: var(--container);
        }
        .bottom-cta-text {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .bottom-cta .btn-accent {
            padding: 10px 24px;
            font-size: 15px;
            flex-shrink: 0;
        }
        
        /* ===== 响应式 ===== */
        @media (max-width: 1023px) {
            .hero .container {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-visual {
                max-width: 600px;
                margin: 0 auto;
                width: 100%;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-inner {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .proof-cards {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero h1 {
                font-size: 38px;
            }
            .section {
                padding: 60px 0;
            }
            .scenario {
                padding: 60px 0;
            }
            .social-proof {
                padding: 60px 0;
            }
        }
        @media (max-width: 767px) {
            .header-main .container {
                flex-wrap: wrap;
                gap: 12px;
                padding-top: 12px;
                padding-bottom: 12px;
            }
            .logo-text {
                font-size: 17px;
            }
            .header-search {
                order: 3;
                max-width: 100%;
                flex-basis: 100%;
            }
            .header-cta .btn-accent {
                padding: 8px 16px;
                font-size: 14px;
            }
            .hero {
                padding: 56px 0 70px;
            }
            .hero h1 {
                font-size: 30px;
            }
            .hero-lead {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px 0;
            }
            .trust-item {
                border-right: none;
                padding: 8px 12px;
            }
            .trust-item:nth-child(2) {
                border-right: none;
            }
            .trust-item {
                border-bottom: 1px solid var(--border);
            }
            .trust-item:nth-last-child(-n+2) {
                border-bottom: none;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 26px;
            }
            .news-item {
                flex-direction: column;
                gap: 12px;
            }
            .news-thumb {
                width: 100%;
                height: 160px;
            }
            .proof-cards {
                grid-template-columns: 1fr;
            }
            .proof-banner {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .proof-banner .item {
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.12);
                padding: 8px 0;
            }
            .proof-banner .item:last-child {
                border-bottom: none;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .bottom-cta .container {
                padding-top: 4px;
                padding-bottom: 4px;
            }
            .bottom-cta {
                padding: 8px 16px;
            }
            .bottom-cta-text {
                font-size: 14px;
                max-width: 50%;
            }
            .section {
                padding: 48px 0;
            }
            .scenario {
                padding: 48px 0;
            }
            .social-proof {
                padding: 48px 0;
            }
            .cta-banner h2 {
                font-size: 24px;
            }
        }
        @media (max-width: 479px) {
            .bottom-cta-text {
                max-width: 45%;
            }
            .bottom-cta .btn-accent {
                padding: 8px 16px;
                font-size: 14px;
            }
            .header-cta .btn-accent {
                font-size: 13px;
                padding: 8px 14px;
            }
            .hero-stats {
                gap: 20px;
                flex-wrap: wrap;
            }
        }

/* roulang page: category1 */
:root{
  --primary:#1B6BB3;
  --primary-dark:#14578F;
  --primary-light:#EAF1F8;
  --accent:#F47C20;
  --accent-dark:#D96A0F;
  --accent-light:#FEF0E4;
  --success:#16A34A;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --text:#1F2937;
  --text-sub:#6B7280;
  --border:#E5EAF1;
  --dark:#0F2E4A;
  --radius-lg:16px;
  --radius-md:10px;
  --radius-pill:999px;
  --shadow:0 4px 20px rgba(27,107,179,0.08);
  --shadow-hover:0 8px 32px rgba(27,107,179,0.14);
  --container:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,"PingFang SC","Segoe UI","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  padding-bottom:66px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
input,button{font-family:inherit;font-size:inherit;border:none;background:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:600;padding:14px 28px;border-radius:var(--radius-md);
  transition:all .25s ease;cursor:pointer;line-height:1.2;white-space:nowrap;
}
.btn-lg{padding:15px 34px;font-size:17px}
.btn-sm{padding:10px 20px;font-size:15px}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 4px 14px rgba(244,124,32,0.28)}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 8px 20px rgba(244,124,32,0.32)}
.btn-accent:active{transform:translateY(0);background:#C55E0A}
.btn-outline{background:#fff;color:var(--primary);border:1px solid var(--primary)}
.btn-outline:hover{background:var(--primary-light)}
.btn-outline:active{background:#dce9f5}
.btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,0.7)}
.btn-outline-light:hover{background:rgba(255,255,255,0.12)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
:focus:not(:focus-visible){outline:none}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:1000;background:#fff;box-shadow:0 2px 12px rgba(15,46,74,0.06)}
.header-main{border-bottom:1px solid var(--border)}
.header-main .container{display:flex;align-items:center;gap:24px;padding:14px 24px;max-width:var(--container)}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:10px;
  background:var(--primary);color:#fff;font-size:12px;font-weight:800;letter-spacing:-1px;
}
.logo-icon span{color:var(--accent)}
.logo-text{font-size:20px;font-weight:800;color:var(--primary);letter-spacing:0.5px}
.header-search{
  display:flex;align-items:center;gap:8px;flex:1;max-width:460px;margin:0 auto;
  background:#F1F5F9;border-radius:var(--radius-pill);padding:10px 18px;
  transition:box-shadow .2s,border .2s;border:1px solid transparent;
}
.header-search:focus-within{background:#fff;border-color:var(--primary);box-shadow:0 0 0 4px rgba(27,107,179,0.12)}
.header-search .search-icon{color:var(--text-sub);flex-shrink:0}
.header-search input{flex:1;border:none;background:transparent;font-size:14px;color:var(--text);outline:none}
.header-search input::placeholder{color:#9CA3AF}
.header-cta{flex-shrink:0}
.header-nav{border-bottom:1px solid var(--border);background:#fff}
.nav-tabs{display:flex;gap:8px;overflow-x:auto;white-space:nowrap;scrollbar-width:none;padding:10px 0}
.nav-tabs::-webkit-scrollbar{display:none}
.nav-tabs a{
  display:inline-block;padding:8px 20px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:500;color:var(--text-sub);background:#F1F5F9;transition:all .2s;
}
.nav-tabs a:hover{background:var(--primary-light);color:var(--primary)}
.nav-tabs a.active{background:var(--primary);color:#fff;font-weight:600}

/* ===== Page Hero ===== */
.page-hero{position:relative;background-size:cover;background-position:center;padding:60px 0 70px}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(245,248,252,0.96) 20%,rgba(245,248,252,0.88) 70%,rgba(245,248,252,0.78))}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;gap:8px;font-size:14px;color:var(--text-sub);margin-bottom:18px;align-items:center}
.breadcrumb a{color:var(--primary)}
.breadcrumb a:hover{text-decoration:underline}
.hero-chip{
  display:inline-block;background:var(--accent-light);color:var(--accent-dark);
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:var(--radius-pill);margin-bottom:16px;
}
.page-hero h1{font-size:44px;line-height:1.2;font-weight:800;color:var(--primary);margin-bottom:16px;letter-spacing:1px}
.hero-lead{font-size:18px;color:var(--text);max-width:620px;line-height:1.7;margin-bottom:26px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero-meta{display:flex;gap:36px;flex-wrap:wrap;border-top:1px solid var(--border);padding-top:24px;max-width:640px}
.meta-item strong{font-size:28px;font-weight:800;color:var(--primary);font-variant-numeric:tabular-nums;display:block;line-height:1.2}
.meta-item span{font-size:14px;color:var(--text-sub)}

/* ===== Stats Bar ===== */
.stats-bar{background:#fff;border-bottom:1px solid var(--border)}
.stats-bar .container{display:grid;grid-template-columns:repeat(4,1fr);padding:30px 24px;gap:24px}
.stat-item{text-align:center;border-right:1px solid var(--border);padding:0 16px}
.stat-item:last-child{border-right:none}
.stat-item strong{display:block;font-size:32px;font-weight:800;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1.2}
.stat-item span{font-size:14px;color:var(--text-sub)}

/* ===== Section Common ===== */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px}
.section-head h2{font-size:32px;font-weight:700;color:var(--text);line-height:1.3}
.section-head.center{flex-direction:column;align-items:center;text-align:center}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:15px;transition:gap .2s}
.link-more:hover{gap:12px}

/* ===== Cards Grid ===== */
.cards-section{padding:80px 0 60px}
.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.content-card{
  background:var(--card);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);
  box-shadow:var(--shadow);transition:transform .3s ease,box-shadow .3s ease;display:flex;flex-direction:column;
}
.content-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.card-img{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--primary-light)}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.content-card:hover .card-img img{transform:scale(1.05)}
.card-chip{
  position:absolute;left:14px;top:14px;background:var(--accent);color:#fff;
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:var(--radius-pill);z-index:2;
}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:20px;font-weight:700;color:var(--text);line-height:1.4;margin-bottom:10px}
.card-body h3:hover{color:var(--primary)}
.card-summary{font-size:14px;color:var(--text-sub);line-height:1.7;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.card-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:14px;margin-top:auto}
.card-link span{transition:transform .2s}
.card-link:hover span{transform:translateX(4px)}

/* ===== Interlink ===== */
.interlink-section{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:24px 0;text-align:center}
.interlink-section p{font-size:15px;color:var(--text-sub)}
.interlink-section a{color:var(--primary);font-weight:600;margin:0 6px}
.interlink-section a:hover{text-decoration:underline}

/* ===== Features ===== */
.features-section{background:#EDF3FA;padding:80px 0}
.features-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.features-media img{width:100%;border-radius:var(--radius-lg);border:1px solid var(--border);box-shadow:var(--shadow)}
.features-content h2{font-size:32px;font-weight:700;margin-bottom:10px;line-height:1.3}
.features-sub{font-size:16px;color:var(--text-sub);margin-bottom:30px}
.features-list li{display:flex;gap:16px;align-items:flex-start;padding:18px 0;border-bottom:1px solid #D8E2EE}
.features-list li:last-child{border-bottom:none}
.feat-icon{
  width:44px;height:44px;flex-shrink:0;border-radius:50%;background:var(--primary);
  color:#fff;display:flex;align-items:center;justify-content:center;
}
.feat-icon svg{width:20px;height:20px}
.features-list h3{font-size:17px;font-weight:600;margin-bottom:4px}
.features-list p{font-size:14px;color:var(--text-sub);line-height:1.6}

/* ===== FAQ ===== */
.faq-section{padding:80px 0 40px;background:var(--bg)}
.faq-section .section-head{margin-bottom:30px}
.faq-list{max-width:860px;margin:0 auto;background:#fff;border-radius:var(--radius-lg);padding:8px 32px;box-shadow:var(--shadow)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item:last-child{border-bottom:none}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--text);cursor:pointer;text-align:left;
  border-left:4px solid var(--primary);padding-left:18px;transition:color .2s;
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  width:32px;height:32px;flex-shrink:0;border-radius:50%;background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:400;transition:transform .3s,background .3s;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--accent);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease,padding .3s ease;padding:0 18px}
.faq-item.open .faq-a{max-height:260px;padding:0 18px 22px}
.faq-a p{font-size:14px;color:var(--text-sub);line-height:1.8}

/* ===== CTA ===== */
.cta-section{position:relative;padding:90px 0;background-size:cover;background-position:center;text-align:center}
.cta-section::before{content:"";position:absolute;inset:0;background:rgba(15,46,74,0.9)}
.cta-section .container{position:relative;z-index:2}
.cta-section h2{font-size:34px;font-weight:800;color:#fff;margin-bottom:12px}
.cta-section p{color:rgba(255,255,255,0.7);font-size:17px;margin-bottom:28px}
.cta-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* ===== Footer ===== */
.site-footer{background:var(--dark);color:#E2E8F0;padding:48px 0 0;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:48px;padding-bottom:40px}
.footer-brand .logo{color:#fff;margin-bottom:14px}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-icon{background:rgba(255,255,255,0.12)}
.footer-brand p{font-size:14px;color:#94A3B8;line-height:1.7;margin-bottom:18px;max-width:340px}
.footer-social{display:flex;gap:12px}
.footer-social a{
  width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:#E2E8F0;background:rgba(255,255,255,0.08);transition:background .2s,color .2s;
}
.footer-social a:hover{background:var(--accent);color:#fff}
.footer-col h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:18px}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{color:#94A3B8;font-size:14px;transition:color .2s}
.footer-col ul a:hover{color:var(--accent)}
.footer-contact li{display:flex;align-items:center;gap:10px;color:#94A3B8;font-size:14px}
.footer-contact li svg{width:16px;height:16px;flex-shrink:0;color:#64748B}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.12);padding:18px 0;text-align:center}
.footer-bottom p{font-size:13px;color:#94A3B8}

/* ===== Convert Bar ===== */
.convert-bar{
  position:fixed;bottom:0;left:0;right:0;z-index:1000;
  background:linear-gradient(90deg,var(--primary),var(--primary-dark));
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.2),0 -6px 24px rgba(15,46,74,0.12);
  transform:translateY(100%);transition:transform .3s ease;visibility:hidden;
}
.convert-bar.show{transform:translateY(0);visibility:visible}
.convert-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 24px}
.convert-text{color:#fff;font-size:16px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.convert-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}
.convert-actions .btn{box-shadow:0 2px 10px rgba(0,0,0,0.15)}
.convert-link{color:rgba(255,255,255,0.85);font-size:14px;font-weight:500}
.convert-link:hover{color:#fff;text-decoration:underline}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .cards-grid{grid-template-columns:repeat(2,1fr)}
  .features-grid{gap:36px}
  .page-hero h1{font-size:40px}
  .hero-meta{gap:24px}
}
@media (max-width:768px){
  .page-hero{padding:44px 0 56px}
  .page-hero h1{font-size:36px}
  .hero-lead{font-size:16px}
  .stats-bar .container{grid-template-columns:repeat(2,1fr);gap:20px;padding:24px 16px}
  .stat-item{border-right:none;border-bottom:1px solid var(--border);padding:12px 0}
  .stat-item:nth-last-child(-n+2){border-bottom:none}
  .features-grid{grid-template-columns:1fr;gap:32px}
  .section-head h2{font-size:28px}
  .cards-section,.features-section,.faq-section{padding:56px 0 40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .header-main .container{gap:12px;padding:12px 16px}
  .header-search{max-width:none;flex:1}
}
@media (max-width:520px){
  .cards-grid{grid-template-columns:1fr}
  .stats-bar .container{grid-template-columns:repeat(2,1fr)}
  .page-hero h1{font-size:30px}
  .hero-actions .btn{width:100%;justify-content:center}
  .hero-actions{flex-direction:column}
  .hero-meta{flex-direction:column;gap:14px}
  .header-main .container{padding:10px 14px}
  .header-search{width:42px;padding:10px;justify-content:center;background:#F1F5F9;border-radius:50%}
  .header-search input{display:none}
  .header-search .search-icon{display:block;color:var(--text-sub)}
  .header-cta .btn{padding:10px 16px;font-size:14px}
  .logo-text{font-size:17px}
  .logo-icon{width:32px;height:32px;font-size:11px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .convert-text{font-size:14px;max-width:180px}
  .convert-inner{padding:10px 14px}
  .convert-actions .btn{padding:8px 14px;font-size:14px}
  .convert-link{display:none}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .cta-section{padding:60px 0}
  .cta-section h2{font-size:26px}
}

/* roulang page: article */
:root{
    --primary:#1B6BB3;
    --primary-dark:#14578F;
    --primary-light:#EAF1F8;
    --accent:#F47C20;
    --accent-dark:#D96A0F;
    --accent-light:#FEF0E4;
    --green:#16A34A;
    --bg:#F5F8FC;
    --card:#FFFFFF;
    --text:#1F2937;
    --text-secondary:#6B7280;
    --border:#E5EAF1;
    --dark:#0F2E4A;
    --radius-lg:16px;
    --radius-md:10px;
    --radius-pill:999px;
    --shadow:0 4px 20px rgba(27,107,179,0.08);
    --shadow-hover:0 8px 32px rgba(27,107,179,0.14);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
    font-family:-apple-system,"PingFang SC","Segoe UI","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
    background:var(--bg);
    color:var(--text);
    line-height:1.75;
    font-size:16px;
    -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-dark);}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
input,textarea{font-family:inherit;outline:none;}
ul,ol{list-style:inside;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.btn{
    display:inline-flex;align-items:center;justify-content:center;gap:6px;
    height:42px;padding:0 26px;border-radius:var(--radius-md);
    font-size:15px;font-weight:600;transition:all .25s ease;
    white-space:nowrap;border:none;cursor:pointer;
}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 6px 20px rgba(244,124,32,0.3);}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);color:#fff;box-shadow:0 6px 20px rgba(27,107,179,0.25);}
.btn-outline{background:#fff;color:var(--primary);border:1px solid var(--primary);}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-dark);}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

/* ===== Header 双层导航 ===== */
.site-header{
    position:sticky;top:0;z-index:1000;
}
.header-main{
    background:#fff;
    border-bottom:1px solid var(--border);
}
.header-main .container{
    display:flex;align-items:center;gap:20px;height:64px;
}
.logo{
    display:flex;align-items:center;gap:10px;flex-shrink:0;
}
.logo-icon{
    width:38px;height:38px;border-radius:10px;
    background:linear-gradient(135deg,#1B6BB3,#14578F);
    display:flex;align-items:center;justify-content:center;
    color:#fff;font-weight:800;font-size:13px;line-height:1;
    box-shadow:0 4px 12px rgba(27,107,179,0.25);
}
.logo-icon span{display:block;transform:skew(-6deg);letter-spacing:-0.5px;}
.logo-text{
    font-size:20px;font-weight:800;color:var(--primary);letter-spacing:0.5px;
}
.header-search{
    flex:1;max-width:420px;position:relative;margin:0 auto;
}
.header-search input{
    width:100%;height:40px;border:1px solid transparent;
    background:#F1F5F9;border-radius:var(--radius-pill);
    padding:0 16px 0 40px;font-size:14px;color:var(--text);
    transition:all .2s ease;
}
.header-search input:focus{
    background:#fff;border-color:var(--primary);
    box-shadow:0 0 0 4px rgba(27,107,179,0.12);
}
.header-search input::placeholder{color:#9CA3AF;}
.search-icon{
    position:absolute;left:14px;top:50%;transform:translateY(-50%);
    color:var(--text-secondary);pointer-events:none;
}
.header-cta{flex-shrink:0;}
.header-nav{
    background:#fff;border-bottom:1px solid var(--border);
    transition:box-shadow .3s ease;
}
.header-nav.scrolled{box-shadow:0 4px 16px rgba(15,46,74,0.08);}
.nav-tabs{
    display:flex;gap:8px;overflow-x:auto;white-space:nowrap;
    scrollbar-width:none;padding:10px 0;min-height:52px;
}
.nav-tabs::-webkit-scrollbar{display:none;}
.nav-tabs a{
    display:inline-flex;align-items:center;padding:8px 22px;
    border-radius:var(--radius-pill);font-size:14px;font-weight:500;
    color:#374151;background:#F1F5F9;transition:all .2s ease;
    flex-shrink:0;
}
.nav-tabs a:hover{background:var(--primary-light);color:var(--primary);}
.nav-tabs a.active{
    background:var(--primary);color:#fff;font-weight:600;
    box-shadow:0 4px 12px rgba(27,107,179,0.25);
}

/* ===== 面包屑 ===== */
.breadcrumb{
    padding:0 0 18px;font-size:13px;color:rgba(255,255,255,0.75);
    display:flex;align-items:center;gap:8px;flex-wrap:wrap;
}
.breadcrumb a{color:rgba(255,255,255,0.75);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{color:rgba(255,255,255,0.4);}
.breadcrumb .current{
    color:#fff;font-weight:500;max-width:480px;
    overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ===== 文章主体 ===== */
.article-main{padding:32px 0 80px;}
.article-wrap{
    max-width:1000px;margin:0 auto;background:#fff;
    border-radius:var(--radius-lg);box-shadow:var(--shadow);
    overflow:hidden;
}
.article-banner{
    background:linear-gradient(135deg,rgba(27,107,179,0.92),rgba(15,46,74,0.88)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    padding:48px 56px 44px;color:#fff;
}
.article-banner h1{
    font-size:32px;font-weight:800;line-height:1.3;
    margin:18px 0 14px;letter-spacing:0.3px;
}
.article-meta{
    display:flex;align-items:center;gap:16px;flex-wrap:wrap;
}
.chip{
    display:inline-flex;align-items:center;padding:5px 14px;
    border-radius:var(--radius-pill);font-size:12px;font-weight:600;
    background:var(--accent);color:#fff;
}
.article-time{
    display:inline-flex;align-items:center;gap:6px;
    font-size:13px;color:rgba(255,255,255,0.8);
}
.article-time svg{width:14px;height:14px;}
.article-summary{
    font-size:14px;line-height:1.7;color:rgba(255,255,255,0.85);
    margin-top:12px;max-width:720px;
}
.article-body{padding:48px 56px 40px;}

/* 正文排版 */
.article-content{
    font-size:16px;line-height:1.75;color:var(--text);max-width:720px;
}
.article-content h2{
    font-size:24px;font-weight:700;color:var(--text);
    margin:40px 0 16px;padding-left:14px;
    border-left:4px solid var(--primary);
    line-height:1.4;
}
.article-content h3{
    font-size:20px;font-weight:600;margin:32px 0 12px;
    color:var(--text);line-height:1.4;
}
.article-content p{margin-bottom:24px;}
.article-content a{
    color:var(--primary);
    text-underline-offset:4px;
}
.article-content a:hover{color:var(--accent-dark);}
.article-content img{
    border-radius:12px;max-width:100%;height:auto;
    margin:24px 0 8px;
}
.article-content img + em{
    display:block;text-align:center;font-size:13px;
    color:var(--text-secondary);font-style:normal;
    margin-bottom:24px;
}
.article-content blockquote{
    border-left:4px solid var(--primary);
    background:var(--primary-light);
    padding:16px 24px;border-radius:0 12px 12px 0;
    margin:24px 0;color:#374151;
}
.article-content ul,.article-content ol{
    margin:0 0 24px;padding-left:24px;
}
.article-content li{margin-bottom:8px;}
.article-content table{
    width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;
}
.article-content table th{
    background:var(--primary-light);font-weight:600;
    padding:12px;text-align:left;
}
.article-content table td{padding:12px;border-bottom:1px solid var(--border);}
.article-content pre{
    background:var(--dark);color:#E5EAF1;padding:16px 24px;
    border-radius:12px;overflow-x:auto;margin:24px 0;
    font-size:14px;line-height:1.6;
}
.article-content code{
    font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
    font-size:0.9em;background:#F1F5F9;padding:2px 6px;border-radius:4px;
}
.article-content pre code{background:transparent;padding:0;color:inherit;}

/* 空态 */
.article-empty{
    text-align:center;padding:64px 32px;color:var(--text-secondary);
}
.article-empty .empty-icon{
    font-size:48px;display:block;margin-bottom:16px;color:#CBD5E1;
}
.article-empty p{font-size:16px;margin-bottom:24px;}

/* 标签云 */
.article-tags{
    max-width:1000px;margin:24px auto 0;padding:0 24px;
    display:flex;align-items:center;gap:10px;flex-wrap:wrap;
}
.article-tags .tag-label{
    font-size:13px;color:var(--text-secondary);font-weight:600;
}
.article-tags .tag{
    display:inline-block;padding:6px 16px;border-radius:var(--radius-pill);
    background:var(--primary-light);color:var(--primary);
    font-size:13px;font-weight:500;transition:all .2s ease;
    border:1px solid transparent;
}
.article-tags .tag:hover{
    background:var(--accent-light);color:var(--accent-dark);
    border-color:rgba(244,124,32,0.3);
}

/* 相关推荐 */
.related-section{
    max-width:1200px;margin:0 auto;padding:64px 24px 0;
}
.section-head{
    display:flex;align-items:center;justify-content:space-between;
    margin-bottom:28px;
}
.section-head h2{
    font-size:28px;font-weight:700;color:var(--text);
}
.link-more{
    display:inline-flex;align-items:center;gap:4px;
    font-size:14px;font-weight:600;color:var(--primary);
}
.link-more svg{transition:transform .2s ease;}
.link-more:hover svg{transform:translateX(4px);}
.related-grid{
    display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.related-card{
    background:var(--card);border-radius:var(--radius-lg);
    overflow:hidden;box-shadow:var(--shadow);transition:all .3s ease;
    display:block;border:1px solid transparent;
}
.related-card:hover{
    transform:translateY(-4px);box-shadow:var(--shadow-hover);
    border-color:var(--primary-light);
}
.related-card img{
    width:100%;height:160px;object-fit:cover;
}
.related-info{padding:20px 24px 22px;}
.related-info h3{
    font-size:16px;font-weight:600;line-height:1.5;
    margin-bottom:8px;color:var(--text);transition:color .2s;
}
.related-card:hover .related-info h3{color:var(--primary);}
.related-info time{
    font-size:13px;color:var(--text-secondary);
    display:flex;align-items:center;gap:6px;
}
.related-info time svg{width:14px;height:14px;}

/* ===== Footer ===== */
.site-footer{
    background:var(--dark);color:#CBD5E1;
    padding:56px 0 0;margin-top:80px;
}
.footer-grid{
    display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;
    padding-bottom:40px;
}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{
    font-size:14px;color:#94A3B8;margin-top:16px;line-height:1.7;
    max-width:320px;
}
.footer-social{
    display:flex;gap:12px;margin-top:20px;
}
.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:#94A3B8;transition:all .2s ease;
}
.footer-social a:hover{
    background:var(--accent);color:#fff;transform:translateY(-2px);
}
.footer-col h4{
    color:#fff;font-size:16px;font-weight:600;margin-bottom:20px;
}
.footer-col ul{list-style:none;}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul li a{
    color:#94A3B8;font-size:14px;transition:color .2s ease;
}
.footer-col ul li a:hover{color:var(--accent);}
.footer-contact li{
    display:flex;align-items:center;gap:8px;
    color:#94A3B8;font-size:14px;
}
.footer-contact svg{
    width:16px;height:16px;flex-shrink:0;
}
.footer-bottom{
    border-top:1px solid rgba(255,255,255,0.12);
    padding:20px 0;text-align:center;
    font-size:13px;color:#94A3B8;
}

/* ===== 底部转化条 ===== */
.bottom-bar{
    position:fixed;bottom:0;left:0;right:0;z-index:999;
    background:linear-gradient(135deg,#1B6BB3,#14578F);
    padding:14px 0;
    transform:translateY(110%);
    transition:transform .3s ease;
    box-shadow:inset 0 1px 0 rgba(255,255,255,0.2);
}
.bottom-bar.show{transform:translateY(0);}
.bottom-bar .container{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.bottom-bar-text{
    color:#fff;font-size:16px;font-weight:600;
    overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.bottom-bar .btn-accent{
    padding:0 24px;height:40px;flex-shrink:0;
    background:#fff;color:var(--primary);font-weight:700;
}
.bottom-bar .btn-accent:hover{
    background:var(--accent-light);color:var(--accent-dark);
    transform:translateY(-2px);
}
.bottom-bar .bar-note{
    color:rgba(255,255,255,0.85);font-size:13px;
}

/* ===== 响应式 ===== */
@media (max-width:1024px){
    .article-banner{padding:40px 36px 36px;}
    .article-body{padding:40px 36px 32px;}
    .related-card img{height:140px;}
}
@media (max-width:768px){
    .header-main .container{gap:12px;height:60px;}
    .header-search{max-width:280px;}
    .header-cta .btn{padding:0 18px;height:38px;font-size:14px;}
    .article-banner h1{font-size:28px;}
    .article-summary{font-size:13px;}
    .article-body{padding:32px 24px 28px;}
    .related-grid{grid-template-columns:repeat(2,1fr);}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .footer-brand{grid-column:1 / -1;}
    .article-tags{max-width:100%;}
    .article-wrap{max-width:100%;}
    .article-banner{
        background:linear-gradient(135deg,rgba(27,107,179,0.94),rgba(15,46,74,0.9)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    }
}
@media (max-width:520px){
    .container{padding:0 16px;}
    .header-cta{display:none;}
    .header-search{max-width:none;}
    .header-search input{font-size:13px;}
    .logo-text{font-size:17px;}
    .nav-tabs a{padding:7px 16px;font-size:13px;}
    .article-main{padding:16px 0 64px;}
    .article-wrap{border-radius:12px;}
    .article-banner{padding:28px 20px 24px;}
    .article-banner h1{font-size:24px;line-height:1.35;}
    .article-meta{gap:10px;}
    .chip{font-size:11px;padding:4px 12px;}
    .article-time{font-size:12px;}
    .article-body{padding:24px 20px 20px;}
    .article-content h2{font-size:20px;margin-top:32px;}
    .article-content h3{font-size:18px;}
    .article-content{font-size:15px;line-height:1.7;}
    .related-section{padding:48px 16px 0;}
    .section-head h2{font-size:22px;}
    .related-grid{grid-template-columns:1fr;gap:16px;}
    .related-card img{height:180px;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .footer-brand{grid-column:auto;}
    .site-footer{padding:40px 0 80px;margin-top:56px;}
    .bottom-bar{padding:10px 0;}
    .bottom-bar-text{font-size:14px;max-width:50%;}
    .bottom-bar .btn-accent{padding:0 16px;font-size:14px;height:36px;}
    .bottom-bar .bar-note{display:none;}
    .article-tags{gap:8px;}
    .article-tags .tag{padding:5px 12px;font-size:12px;}
}

/* roulang page: category2 */
:root {
  --primary: #1B6BB3;
  --primary-dark: #14578F;
  --primary-light: #EAF1F8;
  --accent: #F47C20;
  --accent-dark: #D96A0F;
  --accent-light: #FEF0E4;
  --green: #16A34A;
  --bg: #F5F8FC;
  --card: #FFFFFF;
  --text: #1F2937;
  --text-sub: #6B7280;
  --border: #E5EAF1;
  --footer-bg: #0F2E4A;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-pill: 999px;
  --shadow: 0 4px 20px rgba(27,107,179,0.08);
  --shadow-hover: 0 8px 32px rgba(27,107,179,0.14);
  --container: 1200px;
  --spacing: 80px;
  --font: -apple-system, "PingFang SC", "Segoe UI", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s;
}

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

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

input {
  font-family: inherit;
}

ul {
  list-style: none;
}

[id] {
  scroll-margin-top: 140px;
}

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

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  line-height: 1;
  transition: all 0.25s ease;
  text-align: center;
}

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

.btn-accent {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 16px rgba(244,124,32,0.28);
}

.btn-accent:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(244,124,32,0.35);
}

.btn-accent:active {
  transform: translateY(0);
  background: #C25A08;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(27,107,179,0.25);
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(27,107,179,0.3);
}

.btn-outline {
  background: #fff;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 17px;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 14px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 15px;
  transition: gap 0.2s;
}

.text-link svg {
  transition: transform 0.2s;
}

.text-link:hover svg {
  transform: translateX(4px);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: #fff;
  box-shadow: 0 1px 0 rgba(15,46,74,0.06);
}

.header-main {
  border-bottom: 1px solid var(--border);
  background: #fff;
}

.header-main .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--primary);
  color: #fff;
  border-radius: 10px;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0.5px;
}

.logo-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.3px;
}

.logo:hover .logo-text {
  color: var(--primary);
}

.header-search {
  flex: 1;
  max-width: 420px;
  display: flex;
  align-items: center;
  gap: 8px;
  background: #F1F5F9;
  border-radius: var(--radius-pill);
  padding: 10px 18px;
  transition: all 0.25s;
}

.header-search:focus-within {
  background: #fff;
  box-shadow: 0 0 0 2px var(--primary), 0 0 0 4px rgba(27,107,179,0.12);
}

.header-search .search-icon {
  color: var(--text-sub);
  flex-shrink: 0;
}

.header-search input {
  border: none;
  background: none;
  flex: 1;
  font-size: 14px;
  color: var(--text);
  outline: none;
  min-width: 0;
}

.header-search input::placeholder {
  color: #9CA3AF;
}

.header-cta {
  flex-shrink: 0;
}

.header-nav {
  background: #fff;
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s;
}

.header-nav.scrolled {
  box-shadow: 0 4px 16px rgba(15,46,74,0.08);
}

.header-nav .container {
  padding: 0 24px;
}

.nav-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 10px 0;
  white-space: nowrap;
  scrollbar-width: none;
}

.nav-tabs::-webkit-scrollbar {
  display: none;
}

.nav-tabs a {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-sub);
  background: #F1F5F9;
  transition: all 0.2s;
}

.nav-tabs a:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.nav-tabs a.active {
  background: var(--primary);
  color: #fff;
}

/* ---------- Page Hero ---------- */
.page-hero {
  position: relative;
  padding: 84px 0 64px;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
}

.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(245, 248, 252, 0.9);
}

.page-hero .container {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 820px;
}

.hero-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
}

.hero-chip::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
}

.page-hero h1 {
  font-size: 44px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.page-hero .lead {
  font-size: 18px;
  color: var(--text-sub);
  line-height: 1.7;
  max-width: 640px;
  margin: 0 auto 32px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Stats Ribbon ---------- */
.stats-ribbon {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 32px 0;
}

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

.stat-item {
  text-align: center;
  position: relative;
  padding: 4px 0;
}

.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 44px;
  background: var(--border);
}

.stat-num {
  font-size: 34px;
  font-weight: 800;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.stat-label {
  font-size: 14px;
  color: var(--text-sub);
  margin-top: 4px;
  letter-spacing: 0.3px;
}

/* ---------- Section Common ---------- */
.section {
  padding: var(--spacing) 0;
}

.section-head {
  text-align: center;
  margin-bottom: 44px;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  letter-spacing: 0.3px;
}

.section-head .sub {
  color: var(--text-sub);
  font-size: 15px;
  margin-top: 8px;
}

.category-anchors {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 44px;
}

.anchor-pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-sub);
  transition: all 0.2s;
}

.anchor-pill:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: var(--shadow);
}

/* ---------- Project Cards ---------- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  border: 1px solid transparent;
}

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

.project-card .card-cover {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--primary-light);
}

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

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

.project-card .card-body {
  padding: 20px 22px 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-chip {
  align-self: flex-start;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}

.card-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
  line-height: 1.4;
}

.card-body p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}

.card-link {
  margin-top: auto;
  font-weight: 600;
  color: var(--primary);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s;
}

.card-link:hover {
  color: var(--accent);
  gap: 8px;
}

/* ---------- Process ---------- */
.process-section {
  background: #EDF3FA;
}

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

.step-item {
  text-align: center;
  position: relative;
}

.step-num {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  font-size: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(27,107,179,0.3);
  font-variant-numeric: tabular-nums;
}

.step-item h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.step-item p {
  font-size: 14px;
  color: var(--text-sub);
  max-width: 220px;
  margin: 0 auto;
}

.step-item:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 24px;
  left: calc(50% + 40px);
  width: calc(100% - 80px);
  height: 2px;
  background: linear-gradient(90deg, var(--primary) 0%, rgba(27,107,179,0.2) 100%);
}

/* ---------- FAQ ---------- */
.faq-section {
  background: #fff;
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

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

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0;
  width: 100%;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  transition: color 0.2s;
}

.faq-q:hover {
  color: var(--primary);
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 600;
  flex-shrink: 0;
  transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
  line-height: 1;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-a p {
  padding: 0 0 20px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  max-width: 760px;
}

/* ---------- CTA Band ---------- */
.cta-band {
  background: var(--footer-bg);
  color: #fff;
  text-align: center;
  padding: 72px 0;
}

.cta-band h2 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 16px;
  max-width: 560px;
  margin: 0 auto 32px;
}

.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  align-items: center;
}

.cta-band .btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}

.cta-band .btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.cta-band .btn-accent {
  box-shadow: 0 4px 20px rgba(244,124,32,0.4);
}

.cta-band .text-link {
  color: rgba(255, 255, 255, 0.75);
  margin-top: 16px;
  display: inline-flex;
  justify-content: center;
}

.cta-band .text-link:hover {
  color: #fff;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--footer-bg);
  color: #94A3B8;
  padding: 48px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 36px;
}

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

.footer-brand .logo .logo-icon {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.footer-brand .logo .logo-text {
  color: #fff;
}

.footer-brand p {
  font-size: 14px;
  color: #94A3B8;
  line-height: 1.7;
  max-width: 340px;
  margin-bottom: 20px;
}

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

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #94A3B8;
  transition: all 0.2s;
}

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

.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}

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

.footer-col ul li a {
  color: #94A3B8;
  font-size: 14px;
  transition: color 0.2s;
}

.footer-col ul li a:hover {
  color: var(--accent);
}

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #94A3B8;
}

.footer-contact svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: #94A3B8;
}

/* ---------- Bottom Bar ---------- */
.bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: linear-gradient(90deg, #1B6BB3, #14578F);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2);
  transform: translateY(100%);
  transition: transform 0.3s ease;
  padding: 14px 0;
}

.bottom-bar.show {
  transform: translateY(0);
}

.bottom-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.bottom-bar .bar-text {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bottom-bar .btn-accent {
  padding: 10px 24px;
  font-size: 15px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

/* ---------- Responsive ---------- */
@media (max-width: 1023px) {
  :root {
    --spacing: 64px;
  }

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

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

  .stat-item:nth-child(2)::after {
    display: none;
  }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }

  .step-item::after {
    display: none;
  }

  .page-hero h1 {
    font-size: 38px;
  }
}

@media (max-width: 767px) {
  .header-main .container {
    height: 60px;
    gap: 12px;
  }

  .header-search {
    max-width: 40px;
    padding: 10px;
    border-radius: 50%;
    background: var(--primary-light);
    justify-content: center;
  }

  .header-search input {
    display: none;
  }

  .header-search .search-icon {
    width: 18px;
    height: 18px;
  }

  .header-cta .btn {
    padding: 9px 16px;
    font-size: 14px;
  }

  .page-hero {
    padding: 56px 0 44px;
  }

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

  .page-hero .lead {
    font-size: 16px;
  }

  .hero-actions .btn {
    padding: 12px 20px;
    font-size: 15px;
  }

  .section {
    padding: 48px 0;
  }

  .section-head h2 {
    font-size: 26px;
  }

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

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

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

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

  .cta-band h2 {
    font-size: 26px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .nav-tabs a {
    padding: 7px 14px;
    font-size: 13px;
  }

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

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .stat-item::after {
    display: none;
  }

  .stat-num {
    font-size: 28px;
  }

  .bottom-bar {
    padding: 10px 0;
  }

  .bottom-bar .bar-text {
    font-size: 14px;
  }

  .bottom-bar .btn-accent {
    padding: 8px 16px;
    font-size: 14px;
  }

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

  .footer-bottom {
    font-size: 12px;
  }
}

/* roulang page: category3 */
:root {
            --primary: #1B6BB3;
            --primary-dark: #14578F;
            --primary-light: #EAF1F8;
            --accent: #F47C20;
            --accent-dark: #D96A0F;
            --accent-light: #FEF0E4;
            --success: #16A34A;
            --bg: #F5F8FC;
            --card: #FFFFFF;
            --text: #1F2937;
            --text-light: #6B7280;
            --border: #E5EAF1;
            --dark-blue: #0F2E4A;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-pill: 999px;
            --shadow: 0 4px 20px rgba(27, 107, 179, 0.08);
            --shadow-hover: 0 8px 32px rgba(27, 107, 179, 0.14);
            --container: 1200px;
            --space-section: 80px;
            --space-section-mobile: 48px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: -apple-system, "PingFang SC", "Segoe UI", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            padding-bottom: 60px;
        }

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

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

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

        input {
            font-family: inherit;
        }

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

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 16px;
            font-weight: 600;
            line-height: 1.4;
            border-radius: var(--radius-md);
            padding: 14px 28px;
            transition: all .25s ease;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            border: 1px solid var(--accent);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(244, 124, 32, 0.3);
        }
        .btn-accent:active {
            background: #c55e08;
            transform: translateY(0);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.7);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }

        .btn-outline-blue {
            background: #fff;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline-blue:hover {
            background: var(--primary-light);
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #fff;
            border-bottom: 1px solid var(--border);
        }

        .header-main .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 20px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-md);
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            letter-spacing: -1px;
            line-height: 1;
        }

        .logo-icon span {
            color: var(--accent);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: .5px;
        }

        .header-search {
            flex: 1;
            max-width: 420px;
            position: relative;
        }

        .header-search .search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-light);
            pointer-events: none;
        }

        .header-search input {
            width: 100%;
            height: 42px;
            border-radius: var(--radius-pill);
            border: 1px solid transparent;
            background: #F1F5F9;
            padding: 0 18px 0 42px;
            font-size: 14px;
            color: var(--text);
            transition: all .25s;
        }

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

        .header-search input:focus {
            outline: none;
            background: #fff;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(27, 107, 179, 0.12);
        }

        .header-cta {
            flex-shrink: 0;
        }

        .header-cta .btn {
            padding: 10px 22px;
            font-size: 15px;
        }

        .header-nav {
            border-top: 1px solid var(--border);
            background: #fff;
        }

        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 0;
            overflow-x: auto;
            white-space: nowrap;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-tabs::-webkit-scrollbar {
            display: none;
        }

        .nav-tabs a {
            display: inline-flex;
            align-items: center;
            padding: 7px 18px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            background: #F1F5F9;
            transition: all .25s;
        }

        .nav-tabs a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-tabs a.active {
            background: var(--primary);
            color: #fff;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            padding: 96px 0 88px;
            background: var(--dark-blue);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center right;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(15, 46, 74, 0.94) 0%, rgba(27, 107, 179, 0.82) 55%, rgba(27, 107, 179, 0.55) 100%);
        }

        .page-hero .container {
            position: relative;
            z-index: 1;
        }

        .page-hero-content {
            max-width: 720px;
        }

        .hero-chip {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            background: rgba(255, 255, 255, 0.14);
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: .3px;
            margin-bottom: 22px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .page-hero h1 {
            font-size: 46px;
            line-height: 1.2;
            font-weight: 800;
            color: #fff;
            margin-bottom: 20px;
        }

        .page-hero h1 .brand-inline {
            color: var(--accent);
        }

        .hero-subtitle {
            font-size: 18px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 44px;
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 36px;
            padding-top: 34px;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
        }

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

        .stat-item strong {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }

        .stat-item span {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        /* ===== Section common ===== */
        section {
            padding: var(--space-section) 0;
        }

        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 52px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== Feature ===== */
        .feature-section {
            background: #fff;
        }

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

        .feature-card {
            background: var(--bg);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            position: relative;
            overflow: hidden;
            transition: all .3s ease;
            border: 1px solid transparent;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--primary);
            opacity: 0;
            transition: opacity .3s;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(27, 107, 179, 0.1);
        }

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

        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            margin-bottom: 22px;
            transition: all .3s ease;
        }

        .feature-card:nth-child(3) .feature-icon {
            background: var(--accent-light);
            color: var(--accent);
            border: 1px solid rgba(244, 124, 32, 0.15);
        }

        .feature-card:hover .feature-icon {
            background: var(--accent);
            color: #fff;
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .feature-card p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.65;
        }

        /* ===== Resource cards ===== */
        .resource-section {
            background: var(--bg);
        }

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

        .resource-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            transition: all .3s ease;
        }

        .resource-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(27, 107, 179, 0.2);
        }

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

        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .resource-card:hover .card-cover img {
            transform: scale(1.05);
        }

        .card-body {
            padding: 22px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .card-chip {
            display: inline-flex;
            align-self: flex-start;
            padding: 3px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
            background: var(--accent-light);
            color: var(--accent-dark);
            margin-bottom: 12px;
        }

        .card-chip.blue {
            background: var(--primary-light);
            color: var(--primary);
        }

        .card-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .card-desc {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 18px;
            flex: 1;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: gap .2s ease;
        }

        .card-link svg {
            transition: transform .2s ease;
        }

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

        .card-link:hover svg {
            transform: translateX(2px);
        }

        /* ===== Workflow ===== */
        .workflow-section {
            background: #fff;
        }

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

        .step-item {
            padding: 28px 24px;
            border-radius: var(--radius-lg);
            background: var(--bg);
            border: 1px solid var(--border);
            transition: all .3s;
        }

        .step-item:hover {
            background: var(--primary-light);
            border-color: var(--primary);
        }

        .step-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            font-variant-numeric: tabular-nums;
            display: block;
            margin-bottom: 16px;
            opacity: .35;
            transition: opacity .3s;
        }

        .step-item:hover .step-num {
            opacity: 1;
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== Stats band ===== */
        .stats-band {
            background: var(--dark-blue);
            padding: 64px 0;
        }

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

        .stat-box strong {
            display: block;
            font-size: 40px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }

        .stat-box span {
            display: block;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 8px;
        }

        .stats-note {
            text-align: center;
            margin-top: 32px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: #fff;
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            border-top: 1px solid var(--border);
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 24px 0;
            cursor: pointer;
        }

        .faq-question h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            position: relative;
            padding-left: 16px;
            line-height: 1.5;
            transition: color .25s;
        }

        .faq-question h3::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 18px;
            border-radius: 2px;
            background: var(--primary);
        }

        .faq-question:hover h3 {
            color: var(--primary);
        }

        .faq-toggle {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 20px;
            font-weight: 500;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: all .3s ease;
            line-height: 1;
        }

        .faq-item.open .faq-toggle {
            transform: rotate(45deg);
            background: var(--accent);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }

        .faq-answer p {
            padding-bottom: 24px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
            max-width: 720px;
        }

        /* ===== CTA band ===== */
        .cta-band {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            text-align: center;
            color: #fff;
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-band::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
        }

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

        .cta-band h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-band p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }

        .cta-links {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 28px;
            margin-top: 8px;
        }

        .cta-links a {
            color: #fff;
            font-weight: 500;
            border-bottom: 1px solid rgba(255, 255, 255, 0.4);
            transition: all .25s;
        }

        .cta-links a:hover {
            color: var(--accent);
            border-color: var(--accent);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark-blue);
            color: #fff;
            padding: 48px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 36px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand .logo-text {
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 320px;
        }

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

        .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: #94A3B8;
            transition: all .25s;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

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

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

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

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

        .footer-col ul li a {
            font-size: 14px;
            color: #94A3B8;
            transition: all .25s;
        }

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

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.6;
        }

        .footer-contact svg {
            width: 16px;
            height: 16px;
            flex-shrink: 0;
            color: var(--primary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 18px 0;
        }

        .footer-bottom p {
            font-size: 13px;
            color: #94A3B8;
            text-align: center;
        }

        /* ===== Bottom bar ===== */
        .bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            padding: 13px 24px;
            transform: translateY(100%);
            transition: transform .3s ease;
        }

        .bottom-bar.visible {
            transform: translateY(0);
        }

        .bottom-bar p {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
        }

        .bottom-bar .btn {
            padding: 9px 22px;
            font-size: 14px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .page-hero h1 {
                font-size: 36px;
            }

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

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

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

            .stats-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 767px) {
            .header-main .container {
                height: 60px;
            }

            .header-search {
                display: none;
            }

            .header-cta .btn {
                padding: 8px 16px;
                font-size: 14px;
            }

            .logo-text {
                font-size: 17px;
            }

            .page-hero {
                padding: 64px 0 56px;
            }

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

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

            .hero-actions {
                gap: 12px;
                margin-bottom: 32px;
            }

            .hero-stats {
                gap: 24px;
                padding-top: 24px;
            }

            .stat-item strong {
                font-size: 26px;
            }

            section {
                padding: var(--space-section-mobile) 0;
            }

            .section-head h2 {
                font-size: 26px;
            }

            .feature-grid,
            .resource-cards,
            .workflow-steps {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px 16px;
            }

            .stat-box strong {
                font-size: 32px;
            }

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

            .cta-band h2 {
                font-size: 26px;
            }

            .cta-actions .btn {
                width: 100%;
                max-width: 300px;
            }

            .bottom-bar p {
                font-size: 14px;
                max-width: 55%;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }

            .bottom-bar .btn {
                padding: 8px 16px;
                font-size: 13px;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }

            .logo-icon {
                width: 34px;
                height: 34px;
            }

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

            .hero-subtitle {
                font-size: 15px;
            }

            .bottom-bar {
                height: 60px;
                gap: 12px;
                padding: 10px 16px;
            }

            .bottom-bar p {
                font-size: 13px;
                max-width: 60%;
            }

            .bottom-bar .btn {
                padding: 7px 14px;
                font-size: 13px;
            }
        }