/* roulang page: index */
:root {
      --primary-navy: #0A2540;
      --primary-dark: #0D131F;
      --accent-mint: #00D4B2;
      --accent-blue: #0066FF;
      --action-orange: #FF5E3A;
      --bg-slate: #F8FAFC;
      --bg-white: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #334155;
      --text-sub: #64748B;
      --border-color: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-xl: 24px;
      --shadow-soft: 0 10px 30px -5px rgba(10, 37, 64, 0.05), 0 4px 6px -2px rgba(10, 37, 64, 0.02);
      --shadow-hover: 0 20px 35px -5px rgba(0, 102, 255, 0.12), 0 8px 12px -3px rgba(0, 212, 178, 0.08);
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: system-ui, -apple-system, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
      background-color: var(--bg-slate);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button, input, select, textarea {
      font-family: inherit;
      font-size: inherit;
      border: none;
      outline: none;
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .section-wrap {
      padding: 96px 0;
      position: relative;
    }
    .section-dark {
      background-color: var(--primary-dark);
      color: #FFFFFF;
    }
    .section-white {
      background-color: var(--bg-white);
    }
    .section-slate {
      background-color: var(--bg-slate);
    }
    .section-header {
      margin-bottom: 56px;
      max-width: 780px;
    }
    .section-header.center {
      text-align: center;
      margin-left: auto;
      margin-right: auto;
    }
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(0, 102, 255, 0.08);
      color: var(--accent-blue);
      padding: 6px 16px;
      border-radius: 9999px;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 16px;
      border: 1px solid rgba(0, 102, 255, 0.15);
    }
    .section-badge.mint {
      background: rgba(0, 212, 178, 0.12);
      color: #00A389;
      border-color: rgba(0, 212, 178, 0.3);
    }
    .section-badge.orange {
      background: rgba(255, 94, 58, 0.12);
      color: var(--action-orange);
      border-color: rgba(255, 94, 58, 0.25);
    }
    .section-badge.dark {
      background: rgba(255, 255, 255, 0.1);
      color: var(--accent-mint);
      border-color: rgba(255, 255, 255, 0.18);
    }
    .section-title {
      font-size: 2.25rem;
      font-weight: 800;
      line-height: 1.3;
      letter-spacing: -0.02em;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .section-dark .section-title {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 13px 28px;
      border-radius: var(--radius-md);
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      font-size: 0.95rem;
    }
    .btn-orange {
      background-color: var(--action-orange);
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(255, 94, 58, 0.35);
    }
    .btn-orange:hover {
      background-color: #E54E2C;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(255, 94, 58, 0.45);
    }
    .btn-mint {
      background-color: var(--accent-mint);
      color: var(--primary-navy);
      box-shadow: 0 4px 14px rgba(0, 212, 178, 0.3);
    }
    .btn-mint:hover {
      background-color: #00BF9F;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(0, 212, 178, 0.4);
    }
    .btn-outline {
      background: transparent;
      border: 1.5px solid var(--border-color);
      color: var(--text-main);
    }
    .btn-outline:hover {
      border-color: var(--accent-blue);
      color: var(--accent-blue);
      background-color: rgba(0, 102, 255, 0.04);
    }
    .btn-outline-white {
      background: rgba(255, 255, 255, 0.08);
      border: 1.5px solid rgba(255, 255, 255, 0.25);
      color: #FFFFFF;
    }
    .btn-outline-white:hover {
      background: rgba(255, 255, 255, 0.16);
      border-color: var(--accent-mint);
      color: var(--accent-mint);
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }
    .top-meta-bar {
      background-color: var(--primary-navy);
      color: #94A3B8;
      font-size: 0.8rem;
      padding: 7px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .meta-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .meta-links {
      display: flex;
      gap: 20px;
    }
    .meta-links span, .meta-links a {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .meta-links a:hover {
      color: var(--accent-mint);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary-navy);
      letter-spacing: -0.01em;
    }
    .nav-brand-icon {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--accent-blue), var(--accent-mint));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      font-size: 1.2rem;
      box-shadow: 0 4px 10px rgba(0, 102, 255, 0.25);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-menu a {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-muted);
      padding: 6px 2px;
      position: relative;
    }
    .nav-menu a:hover, .nav-menu a.active {
      color: var(--accent-blue);
    }
    .nav-menu a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent-blue);
      transition: var(--transition);
      border-radius: 2px;
    }
    .nav-menu a:hover::after, .nav-menu a.active::after {
      width: 100%;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .mobile-toggle {
      display: none;
      font-size: 1.4rem;
      color: var(--primary-navy);
      cursor: pointer;
      background: transparent;
      padding: 6px;
    }

    /* 板块 1: Hero（裂变邀请首屏 + 任务进度 + 双CTA） */
    .hero-banner {
      position: relative;
      background: linear-gradient(135deg, rgba(10, 37, 64, 0.95) 0%, rgba(13, 19, 31, 0.96) 100%), url('/assets/images/85f232fb734845a3.webp') center/cover no-repeat;
      color: #FFFFFF;
      padding: 100px 0 110px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      overflow: hidden;
    }
    .hero-banner::before {
      content: '';
      position: absolute;
      top: -20%;
      right: -10%;
      width: 600px;
      height: 600px;
      background: radial-gradient(circle, rgba(0, 212, 178, 0.15) 0%, transparent 70%);
      pointer-events: none;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.22;
      margin-bottom: 22px;
      letter-spacing: -0.02em;
    }
    .hero-content h1 span {
      background: linear-gradient(90deg, #00D4B2, #60A5FA);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 1.12rem;
      color: #CBD5E1;
      line-height: 1.75;
      margin-bottom: 32px;
    }
    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }
    .referral-card {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(0, 212, 178, 0.25);
      border-radius: var(--radius-xl);
      padding: 32px;
      backdrop-filter: blur(14px);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
      position: relative;
    }
    .referral-tag {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--action-orange);
      color: #FFFFFF;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 9999px;
      box-shadow: 0 4px 10px rgba(255, 94, 58, 0.3);
    }
    .referral-head {
      margin-bottom: 20px;
    }
    .referral-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 6px;
    }
    .referral-desc {
      font-size: 0.9rem;
      color: #94A3B8;
    }
    .progress-box {
      margin: 24px 0;
    }
    .progress-meta {
      display: flex;
      justify-content: space-between;
      font-size: 0.85rem;
      margin-bottom: 8px;
    }
    .progress-track {
      width: 100%;
      height: 10px;
      background: rgba(255, 255, 255, 0.12);
      border-radius: 9999px;
      overflow: hidden;
    }
    .progress-fill {
      width: 78%;
      height: 100%;
      background: linear-gradient(90deg, var(--accent-blue), var(--accent-mint));
      border-radius: 9999px;
    }
    .referral-perks {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-bottom: 24px;
    }
    .perk-item {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-sm);
      padding: 12px;
      font-size: 0.85rem;
    }
    .perk-item strong {
      display: block;
      color: var(--accent-mint);
      font-size: 1.05rem;
      margin-bottom: 2px;
    }

    /* 板块 2: 已上线能力展示 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .capability-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      transition: var(--transition);
      box-shadow: var(--shadow-soft);
      position: relative;
    }
    .capability-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(0, 102, 255, 0.3);
    }
    .card-icon {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-md);
      background: rgba(0, 102, 255, 0.08);
      color: var(--accent-blue);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.35rem;
      margin-bottom: 20px;
    }
    .card-icon.mint {
      background: rgba(0, 212, 178, 0.1);
      color: #00A389;
    }
    .card-icon.orange {
      background: rgba(255, 94, 58, 0.1);
      color: var(--action-orange);
    }
    .card-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .card-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.68;
      margin-bottom: 20px;
    }
    .card-status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 9999px;
      background: #E6FBF7;
      color: #008770;
    }

    /* 板块 3: 进行中迭代工程 */
    .wip-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .wip-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 28px;
      border-top: 4px solid var(--accent-blue);
      box-shadow: var(--shadow-soft);
      position: relative;
    }
    .wip-card.orange {
      border-top-color: var(--action-orange);
    }
    .wip-card.mint {
      border-top-color: var(--accent-mint);
    }
    .wip-stage {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 16px;
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--text-sub);
    }
    .stage-pill {
      background: rgba(0, 102, 255, 0.1);
      color: var(--accent-blue);
      padding: 3px 8px;
      border-radius: 4px;
    }

    /* 板块 4: 规划中路线演进 */
    .roadmap-list {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .roadmap-card {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 26px 20px;
      transition: var(--transition);
    }
    .roadmap-card:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: var(--accent-mint);
    }
    .roadmap-badge {
      font-size: 0.75rem;
      padding: 3px 8px;
      border-radius: 4px;
      background: rgba(0, 212, 178, 0.2);
      color: var(--accent-mint);
      display: inline-block;
      margin-bottom: 12px;
      font-weight: 700;
    }
    .roadmap-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: #FFFFFF;
    }
    .roadmap-desc {
      font-size: 0.88rem;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* 板块 5: 软硬件矩阵 */
    .product-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      margin-bottom: 50px;
      background: var(--bg-white);
      border-radius: var(--radius-xl);
      padding: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-soft);
    }
    .product-row.reverse {
      grid-template-columns: 1fr 1fr;
    }
    .product-row.reverse .product-media {
      order: 2;
    }
    .product-media {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    }
    .product-media img {
      width: 100%;
      height: 320px;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .product-row:hover .product-media img {
      transform: scale(1.03);
    }
    .product-feature-list {
      list-style: none;
      margin: 20px 0;
    }
    .product-feature-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 10px;
    }
    .product-feature-list li i {
      color: var(--accent-blue);
      margin-top: 4px;
    }

    /* 板块 6: 数据链路与底层架构 */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .flow-step-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      position: relative;
    }
    .flow-number {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--accent-mint);
      opacity: 0.6;
      line-height: 1;
      margin-bottom: 16px;
    }

    /* 板块 7: 标杆案例对比 */
    .case-card {
      background: var(--bg-white);
      border-radius: var(--radius-xl);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-soft);
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
    }
    .case-img-wrap {
      position: relative;
      min-height: 280px;
    }
    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-body {
      padding: 36px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .case-metrics-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      background: var(--bg-slate);
      border-radius: var(--radius-md);
      padding: 16px;
      margin-top: 20px;
    }
    .case-stat-num {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--accent-blue);
    }
    .case-stat-label {
      font-size: 0.78rem;
      color: var(--text-sub);
    }

    /* 板块 8: 运行数据统计条 */
    .stats-bar {
      background: linear-gradient(135deg, var(--primary-navy) 0%, #112D4E 100%);
      border-radius: var(--radius-xl);
      padding: 50px 40px;
      color: #FFFFFF;
      box-shadow: 0 15px 35px rgba(10, 37, 64, 0.15);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .stat-item {
      text-align: center;
    }
    .stat-value {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.1;
      color: var(--accent-mint);
      margin-bottom: 8px;
      font-feature-settings: "tnum";
    }
    .stat-title {
      font-size: 0.95rem;
      color: #E2E8F0;
      font-weight: 500;
    }

    /* 板块 9: 更新日志 */
    .changelog-box {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 40px;
      box-shadow: var(--shadow-soft);
    }
    .timeline {
      position: relative;
      padding-left: 36px;
    }
    .timeline::before {
      content: '';
      position: absolute;
      top: 10px;
      left: 11px;
      bottom: 10px;
      width: 2px;
      background: var(--border-color);
    }
    .timeline-item {
      position: relative;
      margin-bottom: 36px;
    }
    .timeline-item:last-child {
      margin-bottom: 0;
    }
    .timeline-dot {
      position: absolute;
      left: -36px;
      top: 4px;
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: var(--bg-white);
      border: 3px solid var(--accent-blue);
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .timeline-dot::after {
      content: '';
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent-blue);
    }
    .timeline-item.active .timeline-dot {
      border-color: var(--accent-mint);
    }
    .timeline-item.active .timeline-dot::after {
      background: var(--accent-mint);
    }
    .timeline-header {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 8px;
    }
    .timeline-version {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .timeline-tag {
      font-size: 0.75rem;
      padding: 2px 8px;
      border-radius: 4px;
      background: rgba(0, 212, 178, 0.15);
      color: #008770;
      font-weight: 600;
    }
    .timeline-date {
      font-size: 0.85rem;
      color: var(--text-sub);
    }
    .timeline-content {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块 10: 资讯动态 */
    .insight-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-soft);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .insight-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }
    .insight-thumb {
      height: 200px;
      overflow: hidden;
    }
    .insight-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .insight-card:hover .insight-thumb img {
      transform: scale(1.05);
    }
    .insight-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .insight-tag {
      align-self: flex-start;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 4px;
      background: rgba(0, 102, 255, 0.08);
      color: var(--accent-blue);
      margin-bottom: 12px;
    }
    .insight-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .insight-summary {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
      flex: 1;
    }
    .insight-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--accent-blue);
    }

    /* 板块 11: 方案保障与服务指标 */
    .sla-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      text-align: center;
      box-shadow: var(--shadow-soft);
    }
    .sla-icon {
      width: 60px;
      height: 60px;
      margin: 0 auto 18px;
      border-radius: 50%;
      background: rgba(0, 212, 178, 0.12);
      color: #00A389;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
    }
    .sla-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .sla-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 12: 订阅更新与预约表单 */
    .subscription-panel {
      background: linear-gradient(135deg, var(--primary-navy) 0%, var(--primary-dark) 100%);
      border-radius: var(--radius-xl);
      padding: 60px;
      color: #FFFFFF;
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
      box-shadow: 0 25px 50px -12px rgba(10, 37, 64, 0.4);
      border: 1px solid rgba(255, 255, 255, 0.12);
    }
    .form-box {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-lg);
      padding: 32px;
      backdrop-filter: blur(16px);
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
      color: #CBD5E1;
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.2);
      color: #FFFFFF;
      font-size: 0.95rem;
      transition: var(--transition);
    }
    .form-control:focus {
      background: rgba(255, 255, 255, 0.14);
      border-color: var(--accent-mint);
      box-shadow: 0 0 0 3px rgba(0, 212, 178, 0.25);
    }
    .form-control::placeholder {
      color: #64748B;
    }
    select.form-control {
      color: #FFFFFF;
    }
    select.form-control option {
      background-color: var(--primary-dark);
      color: #FFFFFF;
    }
    .form-toast {
      display: none;
      background: rgba(0, 212, 178, 0.2);
      border: 1px solid var(--accent-mint);
      color: var(--accent-mint);
      padding: 12px;
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      margin-top: 14px;
      text-align: center;
    }

    /* 页脚系统 */
    .site-footer {
      background-color: #070B12;
      color: #94A3B8;
      padding: 80px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.9rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
      gap: 40px;
      margin-bottom: 60px;
    }
    .footer-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.2rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 16px;
    }
    .footer-intro {
      font-size: 0.88rem;
      line-height: 1.7;
      color: #64748B;
      margin-bottom: 20px;
    }
    .footer-heading {
      font-size: 1rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 20px;
      position: relative;
      padding-bottom: 8px;
    }
    .footer-heading::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 24px;
      height: 2px;
      background: var(--accent-mint);
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links a {
      color: #94A3B8;
    }
    .footer-links a:hover {
      color: var(--accent-mint);
      padding-left: 4px;
    }
    .footer-contact-list {
      list-style: none;
    }
    .footer-contact-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      margin-bottom: 14px;
      color: #94A3B8;
      font-size: 0.88rem;
    }
    .footer-contact-list i {
      color: var(--accent-mint);
      margin-top: 4px;
    }
    .footer-bottom {
      padding-top: 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.82rem;
      color: #64748B;
    }
    .footer-bottom a {
      color: #64748B;
    }
    .footer-bottom a:hover {
      color: #CBD5E1;
    }

    /* 移动端适配 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .grid-3, .wip-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps, .roadmap-list {
        grid-template-columns: repeat(2, 1fr);
      }
      .product-row {
        grid-template-columns: 1fr;
        padding: 30px;
      }
      .product-row.reverse .product-media {
        order: initial;
      }
      .case-card {
        grid-template-columns: 1fr;
      }
      .case-img-wrap {
        height: 240px;
      }
      .subscription-panel {
        grid-template-columns: 1fr;
        padding: 40px 30px;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-meta-bar {
        display: none;
      }
      .section-wrap {
        padding: 64px 0;
      }
      .hero-banner {
        padding: 64px 0 80px;
      }
      .hero-content h1 {
        font-size: 2.1rem;
      }
      .grid-3, .grid-2, .grid-4, .wip-grid, .roadmap-list, .flow-steps {
        grid-template-columns: 1fr;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 74px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        border-bottom: 1px solid var(--border-color);
        gap: 16px;
      }
      .nav-menu.show {
        display: flex;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-actions .btn {
        display: none;
      }
      .stats-bar {
        padding: 32px 20px;
      }
      .case-metrics-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }