/* roulang page: index */
:root {
            --primary: #0F52BA;
            --primary-dark: #1E40AF;
            --primary-light: #3B82F6;
            --accent: #06B6D4;
            --accent-green: #10B981;
            --bg-body: #FFFFFF;
            --bg-subtle: #F8FAFC;
            --bg-muted: #F1F5F9;
            --bg-dark: #0F172A;
            --bg-card: #FFFFFF;
            --text-main: #0F172A;
            --text-secondary: #475569;
            --text-muted: #64748B;
            --text-white: #FFFFFF;
            --border-light: #E2E8F0;
            --border-dark: #334155;
            --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
            --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
            --shadow-lg: 0 12px 32px -4px rgba(15, 23, 42, 0.1);
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-full: 9999px;
            --container-max: 1240px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            line-height: 1.6;
            color: var(--text-main);
            background-color: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
            padding-bottom: 70px;
        }

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

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

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部通栏 */
        .topbar {
            background-color: var(--bg-dark);
            color: #94A3B8;
            font-size: 13px;
            padding: 8px 0;
            border-bottom: 1px solid var(--border-dark);
        }
        .topbar-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .topbar-items {
            display: flex;
            gap: 20px;
        }
        .topbar-badge {
            color: var(--accent-green);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .topbar-badge::before {
            content: "";
            width: 6px;
            height: 6px;
            background-color: var(--accent-green);
            border-radius: 50%;
            display: inline-block;
        }

        /* 主导航 */
        .header-nav {
            position: sticky;
            top: 0;
            background-color: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 800;
            font-size: 18px;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 28px;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }
        .nav-cta-btn {
            background-color: var(--primary);
            color: white;
            padding: 10px 22px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 14px;
            box-shadow: 0 4px 14px rgba(15, 82, 186, 0.25);
        }
        .nav-cta-btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-1px);
        }

        /* 基础 Section 布局 */
        .section {
            padding: 90px 0;
            position: relative;
        }
        .section-subtle {
            background-color: var(--bg-subtle);
        }
        .section-dark {
            background-color: var(--bg-dark);
            color: var(--text-white);
        }
        .section-header {
            text-align: center;
            max-width: 820px;
            margin: 0 auto 56px auto;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            background: rgba(15, 82, 186, 0.08);
            padding: 4px 14px;
            border-radius: var(--radius-full);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .section-dark .section-tag {
            background: rgba(6, 182, 212, 0.15);
            color: var(--accent);
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 16px;
            color: var(--text-main);
        }
        .section-dark .section-title {
            color: var(--text-white);
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .section-dark .section-desc {
            color: #94A3B8;
        }

        /* Hero 区块（5:7 错位） */
        .hero-section {
            position: relative;
            padding: 80px 0 100px 0;
            background: linear-gradient(180deg, #F0F7FF 0%, #FFFFFF 100%);
            overflow: hidden;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 40px;
            align-items: center;
        }
        .hero-title {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-main);
            margin-bottom: 20px;
        }
        .hero-title span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-desc {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 30px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            margin-bottom: 36px;
            align-items: center;
        }
        .btn-primary {
            background: var(--primary);
            color: white;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            box-shadow: 0 4px 16px rgba(15, 82, 186, 0.3);
            display: inline-block;
            border: 1px solid var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-secondary {
            background: white;
            color: var(--primary);
            padding: 14px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            border: 1px solid var(--border-light);
            display: inline-block;
        }
        .btn-secondary:hover {
            background: var(--bg-muted);
            border-color: #CBD5E1;
        }
        .hero-kpis {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
        }
        .kpi-num {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .kpi-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .hero-visual {
            position: relative;
        }
        .hero-image-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(255, 255, 255, 0.8);
            background: #FFFFFF;
        }
        .hero-image-card img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        /* 适用人群与主体 */
        .persona-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .persona-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }
        .persona-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .persona-icon {
            width: 48px;
            height: 48px;
            background: rgba(15, 82, 186, 0.08);
            color: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 20px;
            margin-bottom: 20px;
        }
        .persona-title {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .persona-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 16px;
        }
        .persona-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .persona-tag {
            font-size: 12px;
            background: var(--bg-muted);
            color: var(--text-secondary);
            padding: 3px 10px;
            border-radius: 4px;
        }

        /* 谁适合 / 谁不适合（对比筛选） */
        .fit-compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .fit-column {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 36px;
            border: 1px solid var(--border-light);
        }
        .fit-column.suitable {
            border-top: 4px solid var(--accent-green);
        }
        .fit-column.unsuitable {
            border-top: 4px solid #EF4444;
        }
        .fit-header {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .fit-header.suitable { color: var(--accent-green); }
        .fit-header.unsuitable { color: #DC2626; }
        .fit-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .fit-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .fit-item-bullet {
            font-weight: bold;
            font-size: 16px;
            flex-shrink: 0;
            margin-top: -2px;
        }
        .fit-item.suitable .fit-item-bullet { color: var(--accent-green); }
        .fit-item.unsuitable .fit-item-bullet { color: #EF4444; }

        /* 匹配方案与落地体系 */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .solution-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all 0.3s;
        }
        .solution-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }
        .solution-badge {
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
            background: #EFF6FF;
            padding: 2px 8px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 12px;
        }
        .solution-title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .solution-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* 联盟推广与生态协作板块 */
        .partner-eco-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 36px;
        }
        .eco-card {
            background: #1E293B;
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border-dark);
        }
        .eco-card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 10px;
        }
        .eco-card-desc {
            font-size: 13px;
            color: #94A3B8;
            line-height: 1.6;
        }
        .eco-cta-box {
            background: rgba(30, 41, 59, 0.8);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        /* 核心优势矩阵 */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .advantage-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all 0.25s ease;
        }
        .advantage-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }
        .advantage-num {
            font-size: 14px;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 8px;
        }
        .advantage-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        .advantage-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* 热门产品模块（横向图文） */
        .module-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            margin-bottom: 48px;
        }
        .module-row:last-child {
            margin-bottom: 0;
        }
        .module-row.reversed {
            direction: rtl;
        }
        .module-row.reversed .module-content {
            direction: ltr;
        }
        .module-row.reversed .module-img-box {
            direction: ltr;
        }
        .module-img-box {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
        }
        .module-img-box img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }
        .module-title {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-main);
        }
        .module-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .module-features {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .module-features li {
            font-size: 14px;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .module-features li::before {
            content: "✓";
            color: var(--accent-green);
            font-weight: bold;
        }

        /* 深色技术架构区 */
        .tech-arch-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 40px;
        }
        .tech-arch-card {
            background: #1E293B;
            border-radius: var(--radius-md);
            padding: 30px;
            border: 1px solid var(--border-dark);
        }
        .tech-stage {
            font-size: 12px;
            font-weight: 700;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 8px;
        }
        .tech-card-title {
            font-size: 19px;
            font-weight: 700;
            color: white;
            margin-bottom: 12px;
        }
        .tech-card-desc {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.65;
        }

        /* 全场景覆盖演示 */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .scenario-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .scenario-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .scenario-content {
            padding: 20px;
        }
        .scenario-title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .scenario-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* 关键运营数据条 */
        .metrics-banner {
            background: linear-gradient(135deg, var(--primary-dark) 0%, #0F172A 100%);
            color: white;
            padding: 60px 0;
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .metric-value {
            font-size: 38px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .metric-title {
            font-size: 15px;
            font-weight: 600;
            color: white;
            margin-bottom: 4px;
        }
        .metric-subtitle {
            font-size: 13px;
            color: #94A3B8;
        }

        /* 客户案例深度解析 */
        .story-container {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-md);
            padding: 40px;
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 40px;
            align-items: center;
        }
        .story-img-box {
            border-radius: var(--radius-md);
            overflow: hidden;
        }
        .story-img-box img {
            width: 100%;
            height: 340px;
            object-fit: cover;
        }
        .story-badge {
            font-size: 12px;
            font-weight: 700;
            color: var(--accent-green);
            background: #ECFDF5;
            padding: 4px 10px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 12px;
        }
        .story-title {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .story-body {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .story-stats {
            display: flex;
            gap: 30px;
            padding-top: 16px;
            border-top: 1px solid var(--border-light);
        }
        .story-stat-num {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
        }
        .story-stat-txt {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 口碑与真实评分区 */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testi-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .testi-stars {
            color: #F59E0B;
            font-size: 16px;
            margin-bottom: 12px;
        }
        .testi-quote {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 20px;
        }
        .testi-user {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-light);
            padding-top: 16px;
        }
        .testi-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #E2E8F0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
            font-size: 14px;
        }
        .testi-name {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-main);
        }
        .testi-role {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 资讯与行业指南 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all 0.25s;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .news-card img {
            width: 100%;
            height: 190px;
            object-fit: cover;
        }
        .news-padding {
            padding: 22px;
        }
        .news-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .news-heading {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
            color: var(--text-main);
        }
        .news-summary {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* FAQ 手风琴折叠 */
        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
        }
        .faq-header {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            background-color: var(--bg-card);
            user-select: none;
        }
        .faq-header:hover {
            background-color: var(--bg-subtle);
        }
        .faq-body {
            padding: 0 24px 20px 24px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            border-top: 1px solid var(--bg-muted);
            margin-top: 4px;
            padding-top: 16px;
        }

        /* 兜底转化保障与行动号召 */
        .cta-guarantee-box {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            color: white;
            text-align: center;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }
        .cta-title {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 16px;
            color: white;
        }
        .cta-desc {
            font-size: 16px;
            max-width: 700px;
            margin: 0 auto 32px auto;
            color: #DBEAFE;
            line-height: 1.7;
        }
        .cta-form {
            display: flex;
            max-width: 540px;
            margin: 0 auto 24px auto;
            gap: 10px;
        }
        .cta-input {
            flex: 1;
            padding: 14px 20px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.3);
            font-size: 15px;
            outline: none;
            background: white;
            color: var(--text-main);
        }
        .cta-submit {
            background: var(--accent);
            color: #0F172A;
            font-weight: 700;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            border: none;
            cursor: pointer;
            transition: all 0.2s;
            white-space: nowrap;
        }
        .cta-submit:hover {
            background: #22D3EE;
            transform: scale(1.02);
        }
        .guarantee-badges {
            display: flex;
            justify-content: center;
            gap: 28px;
            font-size: 13px;
            color: #BFDBFE;
        }

        /* 页脚 */
        .footer {
            background-color: var(--bg-dark);
            color: #94A3B8;
            padding: 70px 0 30px 0;
            border-top: 1px solid var(--border-dark);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 50px;
        }
        .footer-brand-title {
            font-size: 20px;
            font-weight: 700;
            color: white;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-about {
            font-size: 14px;
            line-height: 1.7;
            color: #94A3B8;
            margin-bottom: 20px;
        }
        .footer-heading {
            font-size: 15px;
            font-weight: 700;
            color: white;
            margin-bottom: 20px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 13px;
            color: #94A3B8;
        }
        .footer-links a:hover {
            color: white;
        }
        .footer-bottom {
            padding-top: 30px;
            border-top: 1px solid var(--border-dark);
            text-align: center;
            font-size: 13px;
            color: #64748B;
        }

        /* 移动端固定底部转化条 */
        .mobile-floating-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(8px);
            border-top: 1px solid var(--border-light);
            padding: 10px 20px;
            z-index: 999;
            box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.05);
            align-items: center;
            justify-content: space-between;
        }
        .mobile-floating-btn {
            background: var(--primary);
            color: white;
            padding: 10px 24px;
            border-radius: var(--radius-full);
            font-size: 14px;
            font-weight: 600;
            text-align: center;
            width: 100%;
        }

        /* 响应式断点适配 */
        @media (max-width: 1024px) {
            .hero-grid { grid-template-columns: 1fr; gap: 32px; }
            .hero-image-card img { height: 320px; }
            .persona-grid, .advantage-grid, .testimonials-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
            .solution-grid, .partner-eco-grid, .scenario-grid, .metrics-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .story-container { grid-template-columns: 1fr; }
            .fit-compare-grid { grid-template-columns: 1fr; }
        }

        @media (max-width: 768px) {
            body { padding-bottom: 60px; }
            .section { padding: 60px 0; }
            .section-title { font-size: 26px; }
            .hero-title { font-size: 28px; }
            .nav-menu { display: none; }
            .mobile-floating-bar { display: flex; }
            .persona-grid, .advantage-grid, .testimonials-grid, .news-grid, .solution-grid, .partner-eco-grid, .scenario-grid, .metrics-grid, .tech-arch-grid {
                grid-template-columns: 1fr;
            }
            .module-row { grid-template-columns: 1fr; }
            .module-row.reversed { direction: ltr; }
            .footer-grid { grid-template-columns: 1fr; }
            .cta-form { flex-direction: column; }
            .cta-guarantee-box { padding: 36px 20px; }
            .topbar-items { display: none; }
            .guarantee-badges { flex-direction: column; gap: 8px; align-items: center; }
            .eco-cta-box { flex-direction: column; gap: 16px; text-align: center; }
        }