/* roulang page: index */
:root {
      --primary: #0F52BA;
      --primary-hover: #0d459d;
      --secondary: #10B981;
      --accent: #6366F1;
      --dark-bg: #0B0F19;
      --dark-card: #151D2F;
      --light-bg: #F8FAFC;
      --card-bg: #FFFFFF;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --text-light: #F8FAFC;
      --border-color: #E2E8F0;
      --border-dark: #1E293B;
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 16px;
      --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.08);
      --shadow-md: 0 10px 25px -5px rgba(15, 82, 186, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
      --shadow-hover: 0 16px 32px -4px rgba(15, 82, 186, 0.12), 0 6px 12px -2px rgba(0, 0, 0, 0.06);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--light-bg);
      color: var(--text-main);
      line-height: 1.7;
      overflow-x: hidden;
      font-size: 15px;
    }

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

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

    .container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部双行导航 */
    .top-bar {
      background-color: var(--dark-bg);
      color: #94A3B8;
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-left, .top-bar-right {
      display: flex;
      gap: 20px;
      align-items: center;
    }
    .top-bar-tag {
      background: rgba(16, 185, 129, 0.2);
      color: var(--secondary);
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      font-size: 12px;
      font-weight: 500;
    }

    header.main-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .nav-wrapper {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .logo-icon {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: bold;
      font-size: 18px;
    }
    .nav-menu {
      display: flex;
      list-style: none;
      gap: 32px;
      align-items: center;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      position: relative;
      padding: 6px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }
    .nav-cta {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: var(--transition);
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-md);
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      line-height: 1.4;
      text-align: center;
    }
    .btn-primary {
      background: var(--primary);
      color: #FFFFFF;
      box-shadow: 0 4px 12px rgba(15, 82, 186, 0.25);
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      box-shadow: 0 6px 16px rgba(15, 82, 186, 0.35);
      transform: translateY(-2px);
    }
    .btn-secondary {
      background: rgba(255, 255, 255, 0.9);
      color: var(--text-main);
      border-color: var(--border-color);
    }
    .btn-secondary:hover {
      background: #FFFFFF;
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }
    .btn-emerald {
      background: var(--secondary);
      color: #FFFFFF;
    }
    .btn-emerald:hover {
      background: #0ea371;
      transform: translateY(-2px);
    }

    /* 板块通用样式 */
    section {
      padding: 96px 0;
      position: relative;
    }
    .section-header {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 56px auto;
    }
    .section-badge {
      display: inline-block;
      padding: 4px 12px;
      background: rgba(15, 82, 186, 0.08);
      color: var(--primary);
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 34px;
      line-height: 1.3;
      color: var(--text-main);
      font-weight: 800;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 1. 首屏 (#hero) - 蓝图有机柔光版式 */
    #hero {
      position: relative;
      padding: 120px 0 100px 0;
      background-image: linear-gradient(180deg, rgba(11, 15, 25, 0.88) 0%, rgba(15, 82, 186, 0.82) 100%), url('/assets/images/393df3270afb80d9.webp');
      background-size: cover;
      background-position: center;
      color: #FFFFFF;
      overflow: hidden;
    }
    .hero-container {
      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;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-content p {
      font-size: 16px;
      color: #E2E8F0;
      line-height: 1.8;
      margin-bottom: 32px;
    }
    .hero-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 36px;
    }
    .hero-pill-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: 20px;
      font-size: 13px;
      backdrop-filter: blur(4px);
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      align-items: center;
    }
    .hero-board {
      background: rgba(21, 29, 47, 0.85);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-lg);
      padding: 24px;
      backdrop-filter: blur(16px);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    }
    .board-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      padding-bottom: 12px;
    }
    .board-title {
      font-size: 15px;
      font-weight: 700;
      color: #FFFFFF;
    }
    .board-live {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      color: var(--secondary);
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      background: var(--secondary);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--secondary);
    }
    .board-img {
      border-radius: var(--radius-md);
      overflow: hidden;
      margin-bottom: 16px;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .board-grid-kpi {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
    }
    .kpi-mini-card {
      background: rgba(255, 255, 255, 0.05);
      padding: 12px;
      border-radius: var(--radius-md);
      text-align: center;
    }
    .kpi-mini-val {
      font-size: 18px;
      font-weight: 700;
      color: #38BDF8;
    }
    .kpi-mini-lbl {
      font-size: 12px;
      color: #94A3B8;
      margin-top: 4px;
    }

    /* 2. KPI看板 (#metrics) */
    #metrics {
      background: var(--dark-bg);
      color: #FFFFFF;
      padding: 64px 0;
      border-bottom: 1px solid var(--border-dark);
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .metric-item {
      padding: 16px;
      border-right: 1px solid rgba(255, 255, 255, 0.1);
    }
    .metric-item:last-child {
      border-right: none;
    }
    .metric-number {
      font-size: 42px;
      font-weight: 800;
      line-height: 1.1;
      font-family: monospace, system-ui;
      background: linear-gradient(135deg, #38BDF8, #818CF8);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 8px;
    }
    .metric-label {
      font-size: 15px;
      font-weight: 600;
      color: #E2E8F0;
      margin-bottom: 6px;
    }
    .metric-sub {
      font-size: 13px;
      color: #64748B;
    }

    /* 3. 痛点透视与架构介绍 (#about) */
    #about {
      background: #FFFFFF;
    }
    .about-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .about-image-box {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
    }
    .about-badge-float {
      position: absolute;
      bottom: 24px;
      left: 24px;
      right: 24px;
      background: rgba(11, 15, 25, 0.85);
      backdrop-filter: blur(8px);
      padding: 16px 20px;
      border-radius: var(--radius-md);
      color: #FFFFFF;
      border: 1px solid rgba(255, 255, 255, 0.15);
      font-size: 13px;
      line-height: 1.6;
    }
    .about-text h3 {
      font-size: 28px;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .about-text p {
      font-size: 15px;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.7;
    }
    .param-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 24px;
    }
    .param-item {
      padding: 14px;
      background: var(--light-bg);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }
    .param-title {
      font-weight: 700;
      font-size: 14px;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .param-desc {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 4. 服务矩阵区 (#advantages) */
    #advantages {
      background: var(--light-bg);
    }
    .grid-6 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .adv-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 32px 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .adv-card:hover {
      box-shadow: var(--shadow-hover);
      border-color: rgba(15, 82, 186, 0.3);
      transform: translateY(-4px);
    }
    .adv-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: rgba(15, 82, 186, 0.08);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 20px;
      margin-bottom: 20px;
    }
    .adv-card h4 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .adv-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .adv-card ul {
      list-style: none;
      font-size: 13px;
      color: #475569;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }
    .adv-card ul li {
      margin-bottom: 6px;
      position: relative;
      padding-left: 14px;
    }
    .adv-card ul li::before {
      content: '•';
      color: var(--primary);
      position: absolute;
      left: 0;
      font-weight: bold;
    }

    /* 5. 热门方案与产品矩阵 (#products) */
    #products {
      background: #FFFFFF;
    }
    .product-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .prod-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      background: #FFFFFF;
      box-shadow: var(--shadow-sm);
      position: relative;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .prod-card.featured {
      border-color: var(--primary);
      box-shadow: 0 12px 30px rgba(15, 82, 186, 0.12);
      transform: scale(1.02);
    }
    .prod-card.featured::before {
      content: '行业深度推荐';
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary);
      color: #FFFFFF;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 16px;
      border-radius: 20px;
    }
    .prod-tag {
      font-size: 13px;
      font-weight: 700;
      color: var(--accent);
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 8px;
    }
    .prod-card h3 {
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 12px;
    }
    .prod-card p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    .prod-specs {
      list-style: none;
      margin-bottom: 32px;
      flex-grow: 1;
    }
    .prod-specs li {
      padding: 10px 0;
      border-bottom: 1px dashed var(--border-color);
      font-size: 14px;
      color: #334155;
      display: flex;
      justify-content: space-between;
    }
    .prod-specs li span:last-child {
      font-weight: 600;
      color: var(--text-main);
    }

    /* 6. 方法步骤流 (#workflow) */
    #workflow {
      background: var(--light-bg);
    }
    .timeline-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .step-card {
      background: #FFFFFF;
      padding: 30px 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .step-num {
      width: 36px;
      height: 36px;
      background: var(--primary);
      color: #FFFFFF;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .step-card h4 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .step-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .step-io {
      background: var(--light-bg);
      padding: 10px;
      border-radius: var(--radius-sm);
      font-size: 12px;
      color: #475569;
    }
    .step-io strong {
      color: var(--primary);
    }

    /* 7. 深色案例理念区 (#cases-dark) */
    #cases-dark {
      background: var(--dark-bg);
      color: #FFFFFF;
      position: relative;
      overflow: hidden;
    }
    .cases-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .cases-info h3 {
      font-size: 32px;
      font-weight: 800;
      margin-bottom: 20px;
      color: #FFFFFF;
      line-height: 1.3;
    }
    .cases-info p {
      font-size: 15px;
      color: #94A3B8;
      line-height: 1.8;
      margin-bottom: 28px;
    }
    .highlight-card {
      background: var(--dark-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    }
    .highlight-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding-bottom: 14px;
    }
    .highlight-tag {
      background: rgba(99, 102, 241, 0.2);
      color: #A5B4FC;
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 12px;
    }
    .metric-diff {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 20px;
    }
    .diff-box {
      background: rgba(255, 255, 255, 0.04);
      padding: 16px;
      border-radius: var(--radius-md);
      text-align: center;
    }
    .diff-val {
      font-size: 24px;
      font-weight: 800;
      color: var(--secondary);
    }
    .diff-lbl {
      font-size: 12px;
      color: #94A3B8;
      margin-top: 4px;
    }

    /* 8. 标杆发行团队故事 (#stories) */
    #stories {
      background: #FFFFFF;
    }
    .story-card-large {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: var(--light-bg);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      margin-bottom: 32px;
    }
    .story-img-wrap {
      height: 100%;
      min-height: 320px;
    }
    .story-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .story-body {
      padding: 40px 32px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .story-body h4 {
      font-size: 22px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .story-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .story-metrics-row {
      display: flex;
      gap: 24px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .sm-item strong {
      font-size: 18px;
      color: var(--primary);
      display: block;
    }
    .sm-item span {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 9. 客户证言区 (#testimonials) */
    #testimonials {
      background: var(--light-bg);
    }
    .testi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testi-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-quote {
      font-size: 14px;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 24px;
      position: relative;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }
    .author-info h5 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-info p {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 10. 行业动态与资讯指南 (#insights) */
    #insights {
      background: #FFFFFF;
    }
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .insight-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .insight-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .insight-img {
      height: 180px;
      overflow: hidden;
    }
    .insight-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .insight-card:hover .insight-img img {
      transform: scale(1.05);
    }
    .insight-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .insight-meta {
      display: flex;
      justify-content: space-between;
      font-size: 12px;
      color: #94A3B8;
      margin-bottom: 10px;
    }
    .insight-meta span.cat {
      color: var(--accent);
      font-weight: 600;
    }
    .insight-body h4 {
      font-size: 17px;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .insight-body p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .insight-action {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 11. 专家答疑 FAQ (#faq) */
    #faq {
      background: var(--light-bg);
    }
    .faq-wrapper {
      max-width: 840px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 700;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #FFFFFF;
      transition: background 0.2s;
    }
    .faq-question:hover {
      background: #F1F5F9;
    }
    .faq-icon {
      font-size: 18px;
      font-weight: 400;
      transition: transform 0.3s ease;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out, padding 0.35s ease;
      background: #FAFAFA;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.8;
      padding: 0 24px;
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 16px 24px 24px 24px;
      border-top: 1px solid var(--border-color);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* 12. 转化表单与底部 CTA (#contact) */
    #contact {
      background-image: linear-gradient(135deg, rgba(11, 15, 25, 0.95) 0%, rgba(15, 82, 186, 0.92) 100%), url('/assets/images/64feff5e4d0a0396.jpg');
      background-size: cover;
      background-position: center;
      color: #FFFFFF;
      padding: 100px 0;
    }
    .cta-card {
      max-width: 760px;
      margin: 0 auto;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-lg);
      padding: 48px;
      backdrop-filter: blur(16px);
      box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-top: 32px;
    }
    .form-group.full {
      grid-column: span 2;
    }
    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 8px;
      color: #E2E8F0;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-md);
      color: #FFFFFF;
      font-size: 14px;
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus {
      background: rgba(255, 255, 255, 0.18);
      border-color: #38BDF8;
      box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.25);
    }
    .form-control::placeholder {
      color: #94A3B8;
    }
    select.form-control option {
      background: #0B0F19;
      color: #FFFFFF;
    }

    /* 页脚区域 */
    footer {
      background: var(--dark-bg);
      color: #94A3B8;
      padding: 80px 0 32px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 48px;
      margin-bottom: 60px;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .footer-col p {
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 32px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-container, .about-split, .cases-split, .story-card-large {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .grid-6 {
        grid-template-columns: repeat(2, 1fr);
      }
      .product-cards {
        grid-template-columns: 1fr;
      }
      .prod-card.featured {
        transform: none;
      }
      .timeline-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metric-item:nth-child(2) {
        border-right: none;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        display: none;
        gap: 16px;
      }
      .nav-menu.open {
        display: flex;
      }
      .menu-toggle {
        display: block;
      }
      .hero-content h1 {
        font-size: 32px;
      }
      .section-title {
        font-size: 26px;
      }
      .grid-6, .timeline-steps, .testi-grid, .insights-grid {
        grid-template-columns: 1fr;
      }
      .metrics-grid {
        grid-template-columns: 1fr;
      }
      .metric-item {
        border-right: none;
        border-bottom: 1px solid rgba(255,255,255,0.1);
      }
      .param-list, .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }