/* roulang page: index */
:root {
      --bg-primary: #0a0f1d;
      --bg-surface: rgba(16, 24, 48, 0.7);
      --bg-surface-elevated: rgba(24, 38, 72, 0.85);
      --border-glass: rgba(79, 131, 246, 0.2);
      --border-active: rgba(96, 165, 250, 0.6);
      --primary-accent: #2563eb;
      --primary-glow: rgba(37, 99, 235, 0.35);
      --accent-cyan: #06b6d4;
      --text-main: #f8fafc;
      --text-secondary: #94a3b8;
      --text-muted: #64748b;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-full: 9999px;
      --container-max: 1240px;
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      scroll-behavior: smooth;
      background-color: var(--bg-primary);
      color: var(--text-main);
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
    }

    body {
      background-color: var(--bg-primary);
      color: var(--text-main);
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

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

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部双行导航 */
    .top-bar {
      background: rgba(10, 15, 29, 0.95);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      font-size: 13px;
      color: var(--text-secondary);
      padding: 8px 0;
      position: relative;
      z-index: 101;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .top-bar-left, .top-bar-right {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .top-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 2px 8px;
      background: rgba(6, 182, 212, 0.12);
      border: 1px solid rgba(6, 182, 212, 0.3);
      color: var(--accent-cyan);
      border-radius: var(--radius-sm);
      font-size: 12px;
    }

    .main-nav {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(10, 15, 29, 0.82);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-glass);
      transition: var(--transition);
    }
    .nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 20px;
      font-weight: 700;
      letter-spacing: 0.5px;
      color: #fff;
    }
    .nav-brand-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary-accent), var(--accent-cyan));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 0 15px var(--primary-glow);
    }
    .nav-brand-icon svg {
      width: 20px;
      height: 20px;
      fill: #fff;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-links a {
      font-size: 15px;
      color: var(--text-secondary);
      font-weight: 500;
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
      color: #fff;
    }
    .nav-links a:hover::after, .nav-links a.active::after {
      content: "";
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent-cyan);
      box-shadow: 0 0 8px var(--accent-cyan);
    }
    .nav-action {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-full);
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
      white-space: nowrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, #1d4ed8, #2563eb);
      color: #fff;
      box-shadow: 0 0 20px var(--primary-glow);
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, #2563eb, #06b6d4);
      box-shadow: 0 0 28px rgba(6, 182, 212, 0.45);
      transform: translateY(-1px);
    }
    .btn-secondary {
      background: rgba(255, 255, 255, 0.05);
      border-color: var(--border-glass);
      color: var(--text-main);
      backdrop-filter: blur(8px);
    }
    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: var(--border-active);
    }
    .btn-cyan {
      background: linear-gradient(135deg, #0891b2, #06b6d4);
      color: #fff;
      box-shadow: 0 0 16px rgba(6, 182, 212, 0.35);
    }
    .btn-cyan:hover {
      transform: translateY(-1px);
      box-shadow: 0 0 24px rgba(6, 182, 212, 0.6);
    }

    /* 玻璃拟态卡片与基础样式 */
    .glass-card {
      background: var(--bg-surface);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.1), 0 20px 40px rgba(0, 0, 0, 0.4);
      transition: var(--transition);
    }
    .glass-card:hover {
      border-color: var(--border-active);
      box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.15), 0 24px 48px rgba(0, 0, 0, 0.55);
    }

    section {
      padding: 96px 0;
      position: relative;
    }
    .section-bg-alt {
      background: linear-gradient(180deg, rgba(16, 24, 48, 0.45) 0%, rgba(10, 15, 29, 0.8) 100%);
      border-top: 1px solid rgba(255, 255, 255, 0.03);
      border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    }

    .section-header {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 56px;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      color: var(--accent-cyan);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 12px;
      padding: 4px 14px;
      background: rgba(6, 182, 212, 0.08);
      border: 1px solid rgba(6, 182, 212, 0.2);
      border-radius: var(--radius-full);
    }
    .section-title {
      font-size: 34px;
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 16px;
      color: #fff;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-secondary);
      line-height: 1.8;
    }

    /* 板块 1: Hero 双栏门户 */
    .hero-section {
      position: relative;
      padding: 100px 0 120px;
      background: radial-gradient(circle at 80% 20%, rgba(37, 99, 235, 0.15) 0%, transparent 50%),
                  radial-gradient(circle at 20% 60%, rgba(6, 182, 212, 0.1) 0%, transparent 40%);
      overflow: hidden;
    }
    .hero-bg-overlay {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/5e93d25000ca0f6d.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.12;
      pointer-events: none;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
      position: relative;
      z-index: 2;
    }
    .hero-content h1 {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 22px;
      background: linear-gradient(135deg, #ffffff 30%, #cbd5e1 70%, #93c5fd 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 16px;
      color: var(--text-secondary);
      line-height: 1.8;
      margin-bottom: 32px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }
    .hero-quick-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }
    .quick-entry-card {
      padding: 24px;
      text-align: left;
      border-radius: var(--radius-md);
      background: var(--bg-surface-elevated);
      border: 1px solid var(--border-glass);
      transition: var(--transition);
      cursor: pointer;
    }
    .quick-entry-card:hover {
      border-color: var(--accent-cyan);
      transform: translateY(-3px);
      box-shadow: 0 12px 30px rgba(6, 182, 212, 0.2);
    }
    .quick-entry-icon {
      width: 44px;
      height: 44px;
      background: rgba(37, 99, 235, 0.2);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 14px;
      color: var(--accent-cyan);
    }
    .quick-entry-title {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 8px;
      color: #fff;
    }
    .quick-entry-desc {
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* 板块 2: 指标数据条 */
    .metrics-bar {
      margin-top: -40px;
      position: relative;
      z-index: 10;
    }
    .metrics-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      padding: 32px;
      background: rgba(16, 24, 48, 0.85);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    }
    .metric-item {
      text-align: center;
      border-right: 1px solid rgba(255, 255, 255, 0.08);
      padding: 0 16px;
    }
    .metric-item:last-child {
      border-right: none;
    }
    .metric-num {
      font-size: 38px;
      font-weight: 800;
      color: var(--accent-cyan);
      margin-bottom: 6px;
      text-shadow: 0 0 12px rgba(6, 182, 212, 0.4);
      font-family: monospace, sans-serif;
    }
    .metric-label {
      font-size: 14px;
      color: var(--text-secondary);
      font-weight: 500;
    }

    /* 板块 3: 架构体系介绍区 */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .about-img-box {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-glass);
      box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    }
    .about-img-box img {
      width: 100%;
      height: 380px;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .about-img-box:hover img {
      transform: scale(1.03);
    }
    .about-text h3 {
      font-size: 26px;
      font-weight: 700;
      margin-bottom: 20px;
      color: #fff;
    }
    .about-text p {
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.8;
      margin-bottom: 20px;
    }
    .about-highlights {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 24px;
    }
    .about-hl-card {
      padding: 16px;
      border-radius: var(--radius-sm);
      background: rgba(255, 255, 255, 0.03);
      border-left: 3px solid var(--accent-cyan);
    }
    .about-hl-title {
      font-size: 14px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 4px;
    }
    .about-hl-desc {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块 4: 竞争优势 */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .advantage-card {
      padding: 32px 26px;
      border-radius: var(--radius-md);
    }
    .adv-icon {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: rgba(37, 99, 235, 0.15);
      border: 1px solid rgba(79, 131, 246, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-cyan);
      margin-bottom: 20px;
    }
    .adv-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
      color: #fff;
    }
    .adv-desc {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* 板块 5: 热门矩阵 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      align-items: stretch;
    }
    .matrix-card {
      padding: 36px 30px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
    }
    .matrix-card.featured {
      border-color: var(--accent-cyan);
      background: var(--bg-surface-elevated);
      box-shadow: 0 0 30px rgba(6, 182, 212, 0.25);
      transform: translateY(-8px);
    }
    .featured-badge {
      position: absolute;
      top: -14px;
      right: 28px;
      background: linear-gradient(135deg, var(--accent-cyan), var(--primary-accent));
      color: #fff;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: var(--radius-full);
      box-shadow: 0 4px 12px rgba(6, 182, 212, 0.4);
    }
    .matrix-header h3 {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 12px;
      color: #fff;
    }
    .matrix-target {
      font-size: 13px;
      color: var(--accent-cyan);
      margin-bottom: 18px;
      font-weight: 500;
    }
    .matrix-points {
      list-style: none;
      margin: 24px 0 32px;
      flex-grow: 1;
    }
    .matrix-points li {
      font-size: 14px;
      color: var(--text-secondary);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .matrix-points li::before {
      content: "✓";
      color: var(--accent-cyan);
      font-weight: 700;
    }

    /* 板块 6: 实施路径/风控流水 */
    .method-steps {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      padding: 24px 20px;
      background: var(--bg-surface);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      position: relative;
    }
    .step-num {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary-accent);
      margin-bottom: 10px;
      opacity: 0.9;
    }
    .step-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: #fff;
    }
    .step-desc {
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* 板块 7: 行业专项展台 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }
    .scenario-card {
      display: grid;
      grid-template-columns: 180px 1fr;
      gap: 20px;
      padding: 24px;
      background: var(--bg-surface);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      align-items: center;
    }
    .scenario-thumb {
      border-radius: var(--radius-sm);
      overflow: hidden;
      height: 130px;
    }
    .scenario-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .scenario-info h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
      color: #fff;
    }
    .scenario-pain {
      font-size: 13px;
      color: #f87171;
      margin-bottom: 6px;
    }
    .scenario-solution {
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* 板块 8: 测算推演工作台 */
    .workbench-box {
      background: #0d1424;
      border: 1px solid var(--border-active);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: 0 0 30px rgba(37, 99, 235, 0.2);
    }
    .wb-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding-bottom: 16px;
      margin-bottom: 24px;
    }
    .wb-tags {
      display: flex;
      gap: 10px;
    }
    .wb-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 36px;
    }
    .wb-chart-mock {
      background: rgba(16, 24, 48, 0.6);
      border-radius: var(--radius-sm);
      padding: 20px;
      border: 1px solid rgba(255, 255, 255, 0.05);
    }
    .chart-bar-wrap {
      margin-bottom: 20px;
    }
    .bar-label-group {
      display: flex;
      justify-content: space-between;
      font-size: 13px;
      margin-bottom: 6px;
    }
    .bar-line {
      height: 12px;
      background: rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-full);
      overflow: hidden;
    }
    .bar-fill-before {
      width: 82%;
      height: 100%;
      background: #f87171;
    }
    .bar-fill-after {
      width: 48%;
      height: 100%;
      background: var(--accent-cyan);
      box-shadow: 0 0 8px var(--accent-cyan);
    }

    /* 板块 9: 成功案例实证 */
    .cases-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .case-card {
      padding: 32px;
      border-radius: var(--radius-md);
    }
    .case-tag {
      font-size: 12px;
      color: var(--accent-cyan);
      padding: 4px 10px;
      background: rgba(6, 182, 212, 0.1);
      border-radius: var(--radius-sm);
      display: inline-block;
      margin-bottom: 12px;
    }
    .case-title {
      font-size: 20px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 14px;
    }
    .case-desc {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .case-stats {
      display: flex;
      gap: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 16px;
    }
    .case-stat-val {
      font-size: 20px;
      font-weight: 700;
      color: #38bdf8;
    }
    .case-stat-lbl {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块 10: 套餐阶梯对比 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .pricing-card {
      padding: 36px 28px;
      border-radius: var(--radius-md);
      display: flex;
      flex-direction: column;
    }
    .pricing-tier {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 8px;
      color: #fff;
    }
    .pricing-suit {
      font-size: 13px;
      color: var(--text-secondary);
      margin-bottom: 24px;
      min-height: 38px;
    }
    .pricing-scope-list {
      list-style: none;
      margin-bottom: 32px;
      flex-grow: 1;
    }
    .pricing-scope-list li {
      font-size: 14px;
      color: var(--text-secondary);
      margin-bottom: 12px;
      padding-left: 20px;
      position: relative;
    }
    .pricing-scope-list li::before {
      content: "•";
      position: absolute;
      left: 6px;
      color: var(--accent-cyan);
      font-weight: bold;
    }

    /* 板块 11: 评价墙 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testi-card {
      padding: 28px 24px;
      border-radius: var(--radius-md);
    }
    .testi-quote {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.8;
      margin-bottom: 20px;
      font-style: italic;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .testi-avatar {
      width: 42px;
      height: 42px;
      border-radius: var(--radius-full);
      background: linear-gradient(135deg, #1e3a8a, #0284c7);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #fff;
    }
    .testi-name {
      font-size: 15px;
      font-weight: 600;
      color: #fff;
    }
    .testi-role {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块 12: 资讯前沿洞察 */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .insight-card {
      padding: 24px 20px;
      border-radius: var(--radius-md);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .insight-date {
      font-size: 12px;
      color: var(--accent-cyan);
      margin-bottom: 8px;
    }
    .insight-title {
      font-size: 16px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 12px;
      line-height: 1.5;
    }
    .insight-snippet {
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.7;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .insight-link {
      font-size: 13px;
      color: var(--accent-cyan);
      display: inline-flex;
      align-items: center;
      gap: 4px;
      font-weight: 500;
    }

    /* 板块 13: 高频答疑手风琴 */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      margin-bottom: 14px;
      background: var(--bg-surface);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-trigger {
      width: 100%;
      text-align: left;
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 600;
      color: #fff;
      background: transparent;
      border: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-trigger:hover {
      color: var(--accent-cyan);
    }
    .faq-icon-arrow {
      transition: transform 0.3s ease;
      font-size: 14px;
    }
    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: rgba(10, 15, 29, 0.4);
    }
    .faq-body-inner {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.8;
    }
    .faq-item.active .faq-body {
      max-height: 220px;
    }
    .faq-item.active .faq-icon-arrow {
      transform: rotate(180deg);
      color: var(--accent-cyan);
    }

    /* 板块 14: 底部转化 CTA 表单 */
    .cta-band {
      background: radial-gradient(circle at 50% 50%, rgba(37, 99, 235, 0.22) 0%, rgba(10, 15, 29, 0.95) 75%);
      border-top: 1px solid var(--border-glass);
      padding: 90px 0;
    }
    .cta-inner-box {
      max-width: 860px;
      margin: 0 auto;
      text-align: center;
    }
    .cta-form {
      display: grid;
      grid-template-columns: repeat(3, 1fr) auto;
      gap: 14px;
      margin-top: 36px;
      margin-bottom: 20px;
    }
    .form-input {
      background: rgba(16, 24, 48, 0.8);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-full);
      padding: 14px 20px;
      color: #fff;
      font-size: 14px;
      outline: none;
      transition: var(--transition);
    }
    .form-input:focus {
      border-color: var(--accent-cyan);
      box-shadow: 0 0 12px rgba(6, 182, 212, 0.3);
    }
    .cta-trust-note {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 页脚四列架构 */
    .site-footer {
      background: #060913;
      border-top: 1px solid rgba(79, 131, 246, 0.15);
      padding: 72px 0 32px;
      font-size: 14px;
      color: var(--text-secondary);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 48px;
      margin-bottom: 56px;
    }
    .footer-brand-title {
      font-size: 20px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-legal-notice {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 20px;
    }
    .footer-col h4 {
      font-size: 16px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links a:hover {
      color: var(--accent-cyan);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 移动端与自适应断点 */
    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; gap: 40px; }
      .metrics-container { grid-template-columns: repeat(2, 1fr); gap: 24px; }
      .about-grid { grid-template-columns: 1fr; }
      .advantages-grid { grid-template-columns: repeat(2, 1fr); }
      .matrix-grid { grid-template-columns: 1fr; }
      .matrix-card.featured { transform: none; }
      .method-steps { grid-template-columns: repeat(3, 1fr); }
      .insights-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 36px; }
      .pricing-grid { grid-template-columns: 1fr; }
      .testimonials-grid { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
      .top-bar { display: none; }
      .nav-links { display: none; }
      .hero-content h1 { font-size: 32px; }
      .section-title { font-size: 26px; }
      .advantages-grid { grid-template-columns: 1fr; }
      .scenario-grid { grid-template-columns: 1fr; }
      .wb-grid { grid-template-columns: 1fr; }
      .cases-grid { grid-template-columns: 1fr; }
      .insights-grid { grid-template-columns: 1fr; }
      .cta-form { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .method-steps { grid-template-columns: 1fr; }
    }
    @media (max-width: 520px) {
      .metrics-container { grid-template-columns: 1fr; }
      .metric-item { border-right: none; border-bottom: 1px solid rgba(255, 255, 255, 0.08); padding-bottom: 16px; }
      .hero-quick-grid { grid-template-columns: 1fr; }
      .scenario-card { grid-template-columns: 1fr; }
    }