/* roulang page: index */
:root {
      --primary: #0E7490;
      --primary-dark: #155E75;
      --primary-light: #0891B2;
      --secondary: #10B981;
      --accent: #F59E0B;
      --bg-main: #F8FAFC;
      --bg-alt: #F0FDFA;
      --surface: #FFFFFF;
      --dark-surface: #0F172A;
      --dark-card: #1E293B;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border: #E2E8F0;
      --border-dark: #334155;
      --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
      --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
      --shadow-lg: 0 10px 30px -4px rgba(15, 23, 42, 0.08);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-xl: 24px;
      --max-w: 1280px;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; font-size: 16px; }
    body {
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-body);
      line-height: 1.7;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
    img { max-width: 100%; height: auto; display: block; }
    button, input, select, textarea { font-family: inherit; font-size: 1rem; }
    
    .container {
      width: 100%;
      max-width: var(--max-w);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    .section-pad { padding-top: 84px; padding-bottom: 84px; }
    .section-pad-sm { padding-top: 56px; padding-bottom: 56px; }
    .bg-alt { background-color: var(--bg-alt); }
    .bg-white { background-color: var(--surface); }
    .bg-dark { background-color: var(--dark-surface); color: #F1F5F9; }

    /* 顶部通知条与导航 */
    .topbar {
      background: #0B5368;
      color: #E0F2FE;
      font-size: 0.85rem;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    .topbar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .topbar-meta { display: flex; align-items: center; gap: 20px; }
    .topbar-badge {
      background: rgba(16, 185, 129, 0.2);
      border: 1px solid rgba(16, 185, 129, 0.4);
      color: #A7F3D0;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      font-size: 0.75rem;
    }

    header.site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
    }
    .header-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 700;
      font-size: 1.4rem;
      color: var(--primary);
    }
    .brand-icon-box {
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 800;
      font-size: 1.15rem;
      box-shadow: 0 4px 10px rgba(14, 116, 144, 0.25);
    }
    .site-nav { display: flex; align-items: center; gap: 28px; }
    .site-nav a {
      font-size: 0.95rem;
      color: var(--text-body);
      font-weight: 500;
      position: relative;
      padding: 6px 0;
    }
    .site-nav a:hover, .site-nav a.active { color: var(--primary); }
    .site-nav a::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: width 0.25s ease;
    }
    .site-nav a:hover::after, .site-nav a.active::after { width: 100%; }
    
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      padding: 10px 22px;
      transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
      cursor: pointer;
      border: 1px solid transparent;
      text-align: center;
      white-space: nowrap;
    }
    .btn:active { transform: scale(0.98); }
    .btn-primary {
      background: var(--primary);
      color: #FFFFFF;
      box-shadow: 0 4px 12px rgba(14, 116, 144, 0.25);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      color: #FFFFFF;
      box-shadow: 0 6px 18px rgba(14, 116, 144, 0.35);
    }
    .btn-secondary {
      background: #FFFFFF;
      color: var(--primary);
      border-color: var(--primary);
    }
    .btn-secondary:hover { background: var(--bg-alt); }
    .btn-accent {
      background: var(--accent);
      color: #FFFFFF;
      box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
    }
    .btn-accent:hover { background: #D97706; }
    .btn-dark {
      background: #1E293B;
      color: #F8FAFC;
      border: 1px solid #334155;
    }
    .btn-dark:hover { background: #334155; }

    /* 通用组件 */
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 12px;
      background: #ECFEFF;
      color: var(--primary);
      border: 1px solid #CFFAFE;
      font-size: 0.85rem;
      font-weight: 600;
      border-radius: 999px;
      margin-bottom: 12px;
    }
    .badge-accent {
      background: #FEF3C7;
      color: #B45309;
      border-color: #FDE68A;
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-header.text-center { text-align: center; }
    .section-header h2 {
      font-size: 2.1rem;
      color: var(--text-main);
      font-weight: 700;
      letter-spacing: -0.02em;
      margin-bottom: 14px;
    }
    .section-header p {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }
    .card {
      background: var(--surface);
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      padding: 28px;
      box-shadow: var(--shadow-md);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }

    /* 板块 1: 首屏深色仪表盘 Hero */
    .hero-section {
      background: radial-gradient(circle at 10% 20%, #164E63 0%, #0F172A 70%);
      color: #F8FAFC;
      padding: 80px 0 96px;
      position: relative;
      overflow: hidden;
    }
    .hero-bg-overlay {
      position: absolute;
      inset: 0;
      opacity: 0.12;
      background-image: url('/assets/images/a56b45d3aa7af9dc.webp');
      background-size: cover;
      background-position: center;
      mix-blend-mode: overlay;
      pointer-events: none;
    }
    .hero-grid {
      position: relative;
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 2.85rem;
      line-height: 1.25;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 20px;
    }
    .hero-desc {
      font-size: 1.1rem;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 32px;
    }
    .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 40px; }
    .hero-trust-bar {
      display: flex;
      gap: 24px;
      border-top: 1px solid rgba(255,255,255,0.12);
      padding-top: 24px;
      color: #94A3B8;
      font-size: 0.9rem;
    }
    .hero-trust-item { display: flex; align-items: center; gap: 8px; }
    .hero-trust-item span.dot {
      width: 8px; height: 8px; background: var(--secondary); border-radius: 50%; display: inline-block;
    }

    .kpi-dashboard {
      background: rgba(15, 23, 42, 0.75);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.4);
      backdrop-filter: blur(10px);
    }
    .kpi-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid rgba(255,255,255,0.1);
      padding-bottom: 14px;
      margin-bottom: 20px;
    }
    .kpi-live-tag {
      font-size: 0.75rem;
      background: rgba(16, 185, 129, 0.2);
      color: #34D399;
      padding: 4px 10px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .kpi-live-dot { width: 6px; height: 6px; background: #34D399; border-radius: 50%; }
    .kpi-stat-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-bottom: 24px;
    }
    .kpi-stat-box {
      background: rgba(30, 41, 59, 0.6);
      border: 1px solid rgba(255,255,255,0.06);
      padding: 16px;
      border-radius: var(--radius-sm);
    }
    .kpi-stat-box .val {
      font-size: 1.8rem;
      font-weight: 700;
      color: #38BDF8;
      font-family: Consolas, Monaco, monospace;
    }
    .kpi-stat-box .label { font-size: 0.82rem; color: #94A3B8; margin-top: 4px; }
    .rank-list-title { font-size: 0.9rem; color: #E2E8F0; margin-bottom: 12px; font-weight: 600; }
    .rank-items { display: flex; flex-direction: column; gap: 10px; }
    .rank-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
      padding: 8px 12px;
      background: rgba(255,255,255,0.03);
      border-radius: 6px;
      border-left: 3px solid var(--primary);
    }
    .rank-item.highlight { border-left-color: var(--accent); background: rgba(245, 158, 11, 0.08); }

    /* 板块 2: 左资讯流与右侧热榜入口 */
    .split-stream-grid {
      display: grid;
      grid-template-columns: 1.25fr 0.75fr;
      gap: 40px;
    }
    .stream-card {
      background: var(--surface);
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      padding: 24px;
      margin-bottom: 20px;
      box-shadow: var(--shadow-sm);
    }
    .stream-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 10px;
    }
    .stream-card h3 {
      font-size: 1.25rem;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .stream-card p {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.65;
    }
    .sidebar-block {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 24px;
      margin-bottom: 28px;
    }
    .sidebar-block h4 {
      font-size: 1.1rem;
      color: var(--text-main);
      margin-bottom: 16px;
      padding-bottom: 10px;
      border-bottom: 2px solid var(--bg-alt);
    }
    .hot-list { list-style: none; display: flex; flex-direction: column; gap: 14px; }
    .hot-list li { display: flex; gap: 12px; align-items: flex-start; }
    .hot-index {
      width: 22px;
      height: 22px;
      background: var(--bg-alt);
      color: var(--primary);
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.8rem;
      font-weight: 700;
      flex-shrink: 0;
    }
    .hot-index.top1 { background: #FEF3C7; color: #B45309; }
    .hot-index.top2 { background: #E0E7FF; color: #4338CA; }
    .hot-index.top3 { background: #CFFAFE; color: #0E7490; }
    .hot-text { font-size: 0.9rem; line-height: 1.45; }

    /* 板块 3: 专题通道条 */
    .topic-strip {
      background: linear-gradient(90deg, #0F766E, #0E7490);
      color: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 32px 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      flex-wrap: wrap;
    }
    .topic-strip h3 { font-size: 1.4rem; font-weight: 700; }
    .topic-strip p { font-size: 0.95rem; color: #CCFBF1; margin-top: 4px; max-width: 600px; }

    /* 板块 4: 服务体系与全维质检 */
    .system-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 36px;
      align-items: center;
    }
    .spec-table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 16px;
      font-size: 0.92rem;
    }
    .spec-table th, .spec-table td {
      padding: 12px 14px;
      border-bottom: 1px solid var(--border);
      text-align: left;
    }
    .spec-table th { background: var(--bg-alt); color: var(--primary-dark); font-weight: 600; }

    /* 板块 5: 核心优势 6卡片网格 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .adv-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 30px;
      position: relative;
    }
    .adv-icon {
      width: 52px;
      height: 52px;
      background: #E0F2FE;
      color: var(--primary);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: 800;
      margin-bottom: 20px;
    }
    .adv-card h3 { font-size: 1.2rem; color: var(--text-main); margin-bottom: 10px; }
    .adv-card p { font-size: 0.92rem; color: var(--text-muted); line-height: 1.65; }

    /* 板块 6: 套餐价格与对比选型 */
    .package-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      display: flex;
      flex-direction: column;
      position: relative;
      transition: all 0.25s ease;
    }
    .package-card.highlight {
      border: 2px solid var(--primary);
      box-shadow: 0 12px 30px rgba(14, 116, 144, 0.15);
      transform: translateY(-8px);
    }
    .pop-badge {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--accent);
      color: #fff;
      font-size: 0.8rem;
      font-weight: 700;
      padding: 4px 16px;
      border-radius: 999px;
    }
    .package-name { font-size: 1.4rem; color: var(--text-main); font-weight: 700; margin-bottom: 6px; }
    .package-tagline { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 20px; }
    .package-price {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 20px;
    }
    .package-price span { font-size: 1rem; font-weight: 400; color: var(--text-muted); }
    .package-features {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-bottom: 30px;
      flex-grow: 1;
      font-size: 0.92rem;
    }
    .package-features li { display: flex; align-items: center; gap: 8px; }
    .package-features li::before {
      content: "✓";
      color: var(--secondary);
      font-weight: 700;
    }

    /* 板块 7: 专病早期筛查矩阵 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .matrix-box {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 24px;
      border-top: 4px solid var(--primary);
    }
    .matrix-box h4 { font-size: 1.15rem; color: var(--text-main); margin-bottom: 8px; }
    .matrix-box .tech { font-size: 0.82rem; color: var(--primary); font-weight: 600; margin-bottom: 12px; }
    .matrix-box p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; }

    /* 板块 8: 深色质感实验室与严苛质控 */
    .tech-step-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 40px;
    }
    .tech-step-box {
      background: rgba(30, 41, 59, 0.7);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .step-number {
      font-size: 1.8rem;
      font-weight: 800;
      color: #38BDF8;
      opacity: 0.5;
      margin-bottom: 8px;
    }
    .tech-step-box h4 { font-size: 1.1rem; color: #FFFFFF; margin-bottom: 8px; }
    .tech-step-box p { font-size: 0.88rem; color: #94A3B8; line-height: 1.6; }

    /* 板块 9: 典型干预案例摘要 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }
    .case-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 28px;
    }
    .case-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 14px;
    }
    .case-tag {
      font-size: 0.8rem;
      background: #FEF2F2;
      color: #DC2626;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      font-weight: 600;
    }
    .case-card h4 { font-size: 1.2rem; color: var(--text-main); margin-bottom: 12px; }
    .case-timeline {
      border-left: 2px solid #E2E8F0;
      padding-left: 14px;
      margin-top: 14px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 0.88rem;
      color: var(--text-body);
    }

    /* 板块 10: 运营数据指标条 */
    .metrics-bar {
      background: #E0F2FE;
      border-radius: var(--radius-lg);
      padding: 40px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metrics-num {
font-size: 2.5rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      font-family: Consolas, Monaco, monospace;
    }
    .metrics-label {
      font-size: 0.95rem;
      color: var(--text-body);
      font-weight: 600;
      margin-top: 8px;
    }

    /* 板块 11: 常见疑难解答手风琴 */
    .faq-container {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      padding: 20px 24px;
      font-weight: 600;
      font-size: 1.05rem;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
      background: var(--surface);
    }
    .faq-toggle-icon {
      font-size: 1.25rem;
      color: var(--primary);
      transition: transform 0.25s ease;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1), padding 0.3s ease;
      background: #F8FAFC;
      color: var(--text-body);
      font-size: 0.95rem;
      line-height: 1.7;
    }
    .faq-item.active .faq-answer {
      max-height: 400px;
      padding: 16px 24px 22px;
      border-top: 1px solid var(--border);
      transition: max-height 0.35s ease-in-out;
    }

    /* 板块 12: 底部线索转化与预约表单 */
    .cta-banner {
      background: linear-gradient(135deg, #0F766E 0%, #0E7490 50%, #0369A1 100%);
      color: #FFFFFF;
      border-radius: var(--radius-xl);
      padding: 56px 48px;
      box-shadow: var(--shadow-lg);
      position: relative;
      overflow: hidden;
    }
    .cta-content-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .cta-text h2 {
      font-size: 2.2rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
      color: #FFFFFF;
    }
    .cta-text p {
      font-size: 1.05rem;
      color: #E0F2FE;
      line-height: 1.75;
      margin-bottom: 24px;
    }
    .cta-features-inline {
      display: flex;
      gap: 20px;
      font-size: 0.9rem;
      color: #BAE6FD;
    }
    .cta-form-box {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 32px;
      color: var(--text-main);
      box-shadow: 0 16px 36px rgba(0,0,0,0.2);
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 11px 14px;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      outline: none;
      transition: border-color 0.2s ease;
      background: #FAFAFA;
    }
    .form-control:focus {
      border-color: var(--primary);
      background: #FFFFFF;
    }
    .form-submit-btn {
      width: 100%;
      padding: 14px;
      font-size: 1.05rem;
      font-weight: 700;
      color: #FFFFFF;
      background: var(--primary);
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: background 0.2s ease, transform 0.1s ease;
      box-shadow: 0 4px 12px rgba(14, 116, 144, 0.3);
    }
    .form-submit-btn:hover { background: var(--primary-dark); }
    .form-submit-btn:active { transform: scale(0.98); }
    .form-tip {
      font-size: 0.78rem;
      color: var(--text-muted);
      margin-top: 10px;
      text-align: center;
    }

    /* 页脚样式 */
    .site-footer {
      background: #0B1320;
      color: #94A3B8;
      font-size: 0.9rem;
      padding-top: 72px;
      padding-bottom: 32px;
      border-top: 1px solid #1E293B;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 0.8fr 1fr 0.8fr;
      gap: 40px;
      margin-bottom: 56px;
    }
    .footer-brand h3 {
      font-size: 1.35rem;
      color: #F8FAFC;
      font-weight: 700;
      margin-bottom: 14px;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .footer-col h4 {
      font-size: 1.05rem;
      color: #F1F5F9;
      font-weight: 600;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: #38BDF8;
      padding-left: 4px;
    }
    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 28px;
      text-align: center;
      font-size: 0.82rem;
      color: #64748B;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-bottom a { color: #64748B; }
    .footer-bottom a:hover { color: #94A3B8; }

    /* 移动端菜单与交互反馈 */
    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      padding: 8px 12px;
      font-size: 1.2rem;
      cursor: pointer;
      color: var(--text-main);
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; gap: 40px; }
      .split-stream-grid { grid-template-columns: 1fr; }
      .grid-3 { grid-template-columns: repeat(2, 1fr); }
      .matrix-grid { grid-template-columns: repeat(2, 1fr); }
      .tech-step-container { grid-template-columns: repeat(2, 1fr); }
      .metrics-bar { grid-template-columns: repeat(2, 1fr); gap: 28px; }
      .cta-content-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .topbar { display: none; }
      .header-inner { height: 64px; }
      .mobile-menu-btn { display: inline-flex; }
      .site-nav {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        align-items: flex-start;
        padding: 20px 24px;
        box-shadow: 0 12px 24px rgba(0,0,0,0.1);
        border-bottom: 1px solid var(--border);
        gap: 16px;
      }
      .site-nav.open { display: flex; }
      .hero-content h1 { font-size: 2.1rem; }
      .grid-3 { grid-template-columns: 1fr; }
      .matrix-grid { grid-template-columns: 1fr; }
      .system-grid { grid-template-columns: 1fr; }
      .case-grid { grid-template-columns: 1fr; }
      .tech-step-container { grid-template-columns: 1fr; }
      .metrics-bar { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .cta-banner { padding: 36px 20px; }
      .cta-features-inline { flex-direction: column; gap: 8px; }
    }