/* roulang page: index */
/* CSS 设计变量系统：深色科技蓝 + 玻璃拟态 + 电光青蓝 */
    :root {
      --bg-base: #0A0F1D;
      --bg-secondary: #0F172A;
      --bg-elevated: rgba(15, 23, 42, 0.75);
      --bg-card: rgba(15, 23, 42, 0.65);
      --bg-glass-hover: rgba(30, 41, 59, 0.85);
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-glow: rgba(0, 242, 254, 0.35);
      --color-primary: #0066FF;
      --color-cyan: #00F2FE;
      --color-accent: #F59E0B;
      --color-text-main: #F8FAFC;
      --color-text-muted: #94A3B8;
      --color-text-dim: #64748B;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --glow-shadow: 0 0 25px rgba(0, 102, 255, 0.45);
      --container-max: 1280px;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }

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

    html {
      scroll-behavior: smooth;
      background-color: var(--bg-base);
    }

    body {
      font-family: var(--font-stack);
      background-color: var(--bg-base);
      color: var(--color-text-muted);
      line-height: 1.7;
      font-size: 1rem;
      overflow-x: hidden;
    }

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

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

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 1.5rem;
    }

    /* 顶层信息条 */
    .top-meta-bar {
      background: rgba(10, 15, 29, 0.95);
      border-bottom: 1px solid var(--border-subtle);
      font-size: 0.82rem;
      color: var(--color-text-dim);
      padding: 0.5rem 0;
    }
    .top-meta-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-meta-status {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--color-cyan);
      box-shadow: 0 0 8px var(--color-cyan);
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.85); }
    }

    /* 主导航栏 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 15, 29, 0.88);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-subtle);
      transition: background 0.3s ease;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .site-brand {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-weight: 700;
      font-size: 1.15rem;
      color: var(--color-text-main);
      letter-spacing: -0.02em;
    }
    .brand-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--color-primary), var(--color-cyan));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.1rem;
      box-shadow: 0 0 15px rgba(0, 242, 254, 0.3);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 1.75rem;
      list-style: none;
    }
    .nav-links a {
      color: var(--color-text-muted);
      font-size: 0.92rem;
      font-weight: 500;
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--color-cyan);
    }
    .nav-cta-btn {
      background: linear-gradient(135deg, var(--color-primary), #0099ff);
      color: #fff !important;
      padding: 0.55rem 1.35rem;
      border-radius: 999px;
      font-size: 0.88rem;
      font-weight: 600;
      box-shadow: 0 0 18px rgba(0, 102, 255, 0.4);
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .nav-cta-btn:hover {
      box-shadow: var(--glow-shadow);
      transform: translateY(-1px);
    }
    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: none;
      color: var(--color-text-main);
      font-size: 1.4rem;
      cursor: pointer;
    }

    /* 移动端抽屉菜单 */
    .mobile-drawer {
      display: none;
      position: fixed;
      top: 108px;
      left: 0;
      width: 100%;
      background: var(--bg-secondary);
      border-bottom: 1px solid var(--border-subtle);
      padding: 1.5rem;
      z-index: 999;
      box-shadow: 0 10px 30px rgba(0,0,0,0.7);
    }
    .mobile-drawer.active {
      display: block;
    }
    .mobile-drawer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    .mobile-drawer-links a {
      font-size: 1.05rem;
      color: var(--color-text-main);
      display: block;
      padding: 0.4rem 0;
      border-bottom: 1px solid rgba(255,255,255,0.04);
    }

    /* 通用板块与排版 */
    section {
      padding: 95px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-secondary);
      border-top: 1px solid var(--border-subtle);
      border-bottom: 1px solid var(--border-subtle);
    }
    .section-deep {
      background: radial-gradient(circle at 50% 50%, #060913 0%, #04060c 100%);
      border-top: 1px solid var(--border-subtle);
      border-bottom: 1px solid var(--border-subtle);
    }
    .section-header {
      margin-bottom: 3.5rem;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.8rem;
      color: var(--color-cyan);
      background: rgba(0, 242, 254, 0.08);
      padding: 0.35rem 0.85rem;
      border-radius: 999px;
      border: 1px solid rgba(0, 242, 254, 0.2);
      margin-bottom: 1rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }
    .section-title {
      font-size: 2.15rem;
      color: var(--color-text-main);
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 1.1rem;
      letter-spacing: -0.02em;
    }
    .section-subtitle {
      max-width: 820px;
      color: var(--color-text-muted);
      font-size: 1.02rem;
      line-height: 1.75;
    }

    /* 玻璃拟态卡片标准样式 */
    .glass-card {
      background: var(--bg-card);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 2rem;
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      position: relative;
      overflow: hidden;
    }
    .glass-card:hover {
      border-color: var(--border-glow);
      transform: translateY(-4px);
      box-shadow: 0 12px 30px rgba(0, 102, 255, 0.15);
    }

    /* 按钮组 */
    .btn-glow-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.65rem;
      background: linear-gradient(135deg, var(--color-primary), var(--color-cyan));
      color: #ffffff;
      padding: 0.85rem 1.85rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.98rem;
      border: none;
      cursor: pointer;
      box-shadow: 0 0 25px rgba(0, 102, 255, 0.45);
      transition: all 0.25s ease;
    }
    .btn-glow-primary:hover {
      box-shadow: 0 0 35px rgba(0, 242, 254, 0.65);
      transform: translateY(-2px);
    }
    .btn-outline-glass {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.65rem;
      background: rgba(255, 255, 255, 0.04);
      color: var(--color-text-main);
      padding: 0.85rem 1.85rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.98rem;
      border: 1px solid var(--border-subtle);
      cursor: pointer;
      backdrop-filter: blur(8px);
      transition: all 0.25s ease;
    }
    .btn-outline-glass:hover {
      background: rgba(255, 255, 255, 0.09);
      border-color: rgba(255, 255, 255, 0.2);
      transform: translateY(-2px);
    }

    /* 板块 1：Hero 区块（无大图首屏，图标矩阵 + 状态条 + 短标题） */
    .hero-section {
      padding: 85px 0 75px 0;
      background: radial-gradient(circle at 50% 20%, rgba(0, 102, 255, 0.12) 0%, rgba(10, 15, 29, 0) 70%),
                  url('/assets/images/bb68d34da9245ebf.jpg') center/cover no-repeat;
      position: relative;
    }
    .hero-section::before {
      content: "";
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(10, 15, 29, 0.88);
      z-index: 1;
    }
    .hero-container {
      position: relative;
      z-index: 2;
    }
    .hero-status-strip {
      display: inline-flex;
      align-items: center;
      gap: 0.8rem;
      background: rgba(15, 23, 42, 0.8);
      border: 1px solid rgba(0, 242, 254, 0.25);
      border-radius: 999px;
      padding: 0.45rem 1.25rem;
      font-size: 0.85rem;
      color: var(--color-cyan);
      margin-bottom: 1.75rem;
      box-shadow: 0 0 15px rgba(0, 242, 254, 0.15);
    }
    .hero-title {
      font-size: 3.25rem;
      font-weight: 800;
      color: var(--color-text-main);
      line-height: 1.22;
      margin-bottom: 1.5rem;
      letter-spacing: -0.03em;
    }
    .hero-title span {
      background: linear-gradient(135deg, #ffffff 40%, var(--color-cyan) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      max-width: 860px;
      font-size: 1.12rem;
      color: var(--color-text-muted);
      line-height: 1.8;
      margin-bottom: 2.25rem;
    }
    .hero-actions {
      display: flex;
      gap: 1.2rem;
      align-items: center;
      margin-bottom: 3.5rem;
      flex-wrap: wrap;
    }
    /* 首屏图标矩阵 */
    .hero-icon-matrix {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.25rem;
      margin-top: 1rem;
    }
    .matrix-item {
      background: rgba(15, 23, 42, 0.7);
      backdrop-filter: blur(12px);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 1.25rem;
      display: flex;
      align-items: center;
      gap: 1rem;
      transition: all 0.25s ease;
    }
    .matrix-item:hover {
      border-color: rgba(0, 242, 254, 0.4);
      background: rgba(20, 32, 56, 0.8);
      transform: translateY(-2px);
    }
    .matrix-icon-box {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: rgba(0, 102, 255, 0.15);
      border: 1px solid rgba(0, 242, 254, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--color-cyan);
      font-size: 1.2rem;
      flex-shrink: 0;
    }
    .matrix-content h4 {
      font-size: 0.95rem;
      color: var(--color-text-main);
      margin-bottom: 0.2rem;
      font-weight: 600;
    }
    .matrix-content p {
      font-size: 0.8rem;
      color: var(--color-text-dim);
      line-height: 1.4;
    }

    /* 板块 2：合集目录（多维数据流技术规格） */
    .spec-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }
    .spec-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 0.75rem;
      margin-top: 1.75rem;
    }
    .spec-badge-item {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border-subtle);
      padding: 0.6rem 1rem;
      border-radius: var(--radius-sm);
      font-size: 0.85rem;
      color: var(--color-text-main);
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }
    .spec-badge-item i {
      color: var(--color-cyan);
    }
    .spec-card-visual {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-subtle);
      box-shadow: 0 20px 40px rgba(0,0,0,0.5);
      position: relative;
    }
    .spec-card-visual img {
      width: 100%;
      height: 380px;
      object-fit: cover;
      filter: saturate(1.1) brightness(0.9);
      transition: transform 0.5s ease;
    }
    .spec-card-visual:hover img {
      transform: scale(1.03);
    }

    /* 板块 3：服务矩阵（6卡片网格） */
    .grid-3col {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .service-card {
      padding: 2.25rem 1.85rem;
    }
    .service-icon-wrap {
      width: 52px;
      height: 52px;
      background: linear-gradient(135deg, rgba(0, 102, 255, 0.2), rgba(0, 242, 254, 0.1));
      border: 1px solid rgba(0, 242, 254, 0.25);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--color-cyan);
      font-size: 1.4rem;
      margin-bottom: 1.5rem;
    }
    .service-card h3 {
      font-size: 1.22rem;
      color: var(--color-text-main);
      margin-bottom: 0.85rem;
      font-weight: 600;
    }
    .service-card p {
      font-size: 0.92rem;
      color: var(--color-text-muted);
      line-height: 1.65;
    }

    /* 板块 4：相关推荐 / 全域知识生态核心优势（3x2 网格） */
    .advantage-num {
      font-family: monospace;
      font-size: 0.85rem;
      color: var(--color-cyan);
      font-weight: 700;
      margin-bottom: 0.75rem;
      display: inline-block;
    }

    /* 板块 5：系统级解决方案（3卡片横向陈列） */
    .solution-card {
      border: 1px solid var(--border-subtle);
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      padding: 2.5rem;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .solution-card.featured {
      border-color: rgba(0, 242, 254, 0.4);
      background: linear-gradient(180deg, rgba(15, 23, 42, 0.85) 0%, rgba(10, 25, 55, 0.6) 100%);
      box-shadow: 0 0 30px rgba(0, 102, 255, 0.2);
    }
    .solution-features {
      list-style: none;
      margin: 1.5rem 0 2rem 0;
      display: flex;
      flex-direction: column;
      gap: 0.85rem;
    }
    .solution-features li {
      font-size: 0.92rem;
      display: flex;
      align-items: center;
      gap: 0.75rem;
      color: var(--color-text-muted);
    }
    .solution-features li i {
      color: var(--color-cyan);
      font-size: 0.85rem;
    }

    /* 板块 6：沉浸技术理念架构 */
    .tech-arch-box {
      border: 1px solid rgba(0, 242, 254, 0.2);
      border-radius: var(--radius-lg);
      background: rgba(10, 15, 29, 0.6);
      padding: 3rem;
      position: relative;
      overflow: hidden;
    }
    .arch-flow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      margin-top: 2rem;
    }
    .arch-step-node {
      background: rgba(15, 23, 42, 0.9);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      text-align: center;
      position: relative;
    }
    .arch-step-node::after {
      content: "\f054";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      position: absolute;
      right: -1.1rem;
      top: 50%;
      transform: translateY(-50%);
      color: var(--color-cyan);
      font-size: 0.85rem;
    }
    .arch-flow-grid .arch-step-node:last-child::after {
      display: none;
    }
    .arch-step-node h4 {
      color: var(--color-text-main);
      font-size: 1.05rem;
      margin-bottom: 0.5rem;
    }
    .arch-step-node p {
      font-size: 0.82rem;
      color: var(--color-text-dim);
    }

    /* 板块 7：业务增长流程规划区（时间轴） */
    .timeline-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      position: relative;
    }
    .timeline-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 1.75rem;
      position: relative;
    }
    .timeline-index {
      font-size: 1.8rem;
      font-weight: 800;
      color: rgba(0, 242, 254, 0.25);
      line-height: 1;
      margin-bottom: 0.75rem;
      font-family: monospace;
    }

    /* 板块 8：真实多元知识社区场景案例墙 */
    .case-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2rem;
    }
    .case-card {
      border: 1px solid var(--border-subtle);
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .case-card img {
      width: 100%;
      height: 240px;
      object-fit: cover;
    }
    .case-body {
      padding: 2rem;
      flex: 1;
    }
    .case-metric-box {
      display: flex;
      gap: 1.5rem;
      margin-top: 1.5rem;
      padding-top: 1.25rem;
      border-top: 1px solid var(--border-subtle);
    }
    .case-metric-val {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--color-cyan);
      display: block;
    }
    .case-metric-lbl {
      font-size: 0.8rem;
      color: var(--color-text-dim);
    }

    /* 板块 9：关键指标统计条 (Metrics Bar) */
    .metrics-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      padding: 3rem 2rem;
      background: linear-gradient(90deg, rgba(15, 23, 42, 0.8) 0%, rgba(0, 102, 255, 0.15) 50%, rgba(15, 23, 42, 0.8) 100%);
      border: 1px solid rgba(0, 242, 254, 0.2);
      border-radius: var(--radius-lg);
      text-align: center;
    }
    .metric-item-num {
      font-size: 2.8rem;
      font-weight: 800;
      color: #ffffff;
      font-family: monospace;
      margin-bottom: 0.35rem;
      background: linear-gradient(180deg, #ffffff 40%, var(--color-cyan) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .metric-item-label {
      font-size: 0.9rem;
      color: var(--color-text-muted);
    }

    /* 板块 10：社群运营与知识机构用户故事区 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .testimonial-card {
      padding: 2.2rem;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testimonial-quote {
      font-size: 0.95rem;
      line-height: 1.75;
      color: var(--color-text-muted);
      margin-bottom: 1.5rem;
      position: relative;
    }
    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 1rem;
      border-top: 1px solid var(--border-subtle);
      padding-top: 1.2rem;
    }
    .author-avatar {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: rgba(0, 102, 255, 0.2);
      border: 1px solid var(--border-glow);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--color-cyan);
      font-size: 1.1rem;
    }
    .author-name {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--color-text-main);
    }
    .author-role {
      font-size: 0.8rem;
      color: var(--color-text-dim);
    }

    /* 板块 11：知识社区研究与数据动态资讯区 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .news-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-card:hover {
      border-color: rgba(0, 242, 254, 0.3);
    }
    .news-content {
      padding: 1.75rem;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 0.8rem;
      color: var(--color-cyan);
      margin-bottom: 0.6rem;
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
    }
    .news-title {
      font-size: 1.15rem;
      color: var(--color-text-main);
      margin-bottom: 0.8rem;
      font-weight: 600;
      line-height: 1.4;
    }
    .news-desc {
      font-size: 0.9rem;
      color: var(--color-text-muted);
      margin-bottom: 1.25rem;
      flex: 1;
      line-height: 1.6;
    }
    .news-link {
      font-size: 0.88rem;
      color: var(--color-cyan);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
    }

    /* 板块 12：合规与高可靠保障条 */
    .trust-strip-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .trust-strip-item {
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      display: flex;
      align-items: center;
      gap: 1rem;
    }
    .trust-icon {
      font-size: 1.8rem;
      color: var(--color-cyan);
    }
    .trust-text h4 {
      font-size: 0.98rem;
      color: var(--color-text-main);
      margin-bottom: 0.2rem;
    }
    .trust-text p {
      font-size: 0.8rem;
      color: var(--color-text-dim);
    }

    /* 板块 13：FAQ 手风琴组件 */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 1.2rem;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.3s ease;
    }
    .faq-item.active {
      border-color: rgba(0, 242, 254, 0.4);
      box-shadow: 0 0 20px rgba(0, 102, 255, 0.15);
    }
    .faq-header {
      padding: 1.4rem 1.75rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }
    .faq-question {
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--color-text-main);
    }
    .faq-toggle-icon {
      color: var(--color-cyan);
      transition: transform 0.3s ease;
      font-size: 0.95rem;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(180deg);
    }
    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
      background: rgba(10, 15, 29, 0.4);
    }
    .faq-content {
      padding: 0 1.75rem 1.4rem 1.75rem;
      font-size: 0.92rem;
      color: var(--color-text-muted);
      line-height: 1.75;
    }

    /* 底部收口与需求登记 */
    .cta-strip-section {
      padding: 80px 0;
      background: radial-gradient(circle at 50% 50%, rgba(0, 102, 255, 0.15) 0%, rgba(10, 15, 29, 0.95) 100%),
                  url('/assets/images/76f6ee00411dfe10.jpg') center/cover no-repeat;
      position: relative;
      border-top: 1px solid var(--border-subtle);
    }
    .cta-box-inner {
      background: rgba(15, 23, 42, 0.85);
      border: 1px solid rgba(0, 242, 254, 0.3);
      border-radius: var(--radius-lg);
      padding: 3.5rem 2.5rem;
      text-align: center;
      max-width: 860px;
      margin: 0 auto;
      backdrop-filter: blur(20px);
      box-shadow: 0 0 40px rgba(0, 102, 255, 0.2);
    }
    .cta-form {
      display: flex;
      gap: 1rem;
      max-width: 580px;
      margin: 2rem auto 0 auto;
    }
    .cta-input {
      flex: 1;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      padding: 0.85rem 1.25rem;
      color: #fff;
      font-size: 0.95rem;
      outline: none;
      transition: border-color 0.25s ease;
    }
    .cta-input:focus {
      border-color: var(--color-cyan);
      box-shadow: 0 0 12px rgba(0, 242, 254, 0.3);
    }

    /* 全局页脚 */
    .site-footer {
      background: #060913;
      border-top: 1px solid var(--border-subtle);
      padding: 70px 0 30px 0;
      font-size: 0.9rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-col h4 {
      color: var(--color-text-main);
      font-size: 1.05rem;
      margin-bottom: 1.25rem;
      font-weight: 600;
    }
    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }
    .footer-links-list a {
      color: var(--color-text-dim);
    }
    .footer-links-list a:hover {
      color: var(--color-cyan);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: var(--color-text-dim);
      font-size: 0.85rem;
    }

    /* 响应式断点 */
    @layer responsive {
      @media (max-width: 1200px) {
        .hero-title { font-size: 2.8rem; }
        .hero-icon-matrix { grid-template-columns: repeat(2, 1fr); }
        .grid-3col { grid-template-columns: repeat(2, 1fr); }
        .footer-grid { grid-template-columns: 1fr 1fr; }
      }
      @media (max-width: 992px) {
        .spec-grid { grid-template-columns: 1fr; }
        .arch-flow-grid { grid-template-columns: repeat(2, 1fr); }
        .arch-step-node::after { display: none; }
        .timeline-grid { grid-template-columns: repeat(2, 1fr); }
        .case-grid { grid-template-columns: 1fr; }
        .metrics-bar { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
        .trust-strip-grid { grid-template-columns: repeat(2, 1fr); }
      }
      @media (max-width: 768px) {
        .nav-links, .nav-cta-btn { display: none; }
        .mobile-menu-btn { display: block; }
        .hero-title { font-size: 2.15rem; }
        .hero-icon-matrix { grid-template-columns: 1fr; }
        .grid-3col, .testimonial-grid, .news-grid { grid-template-columns: 1fr; }
        .metrics-bar { grid-template-columns: 1fr; }
        .timeline-grid { grid-template-columns: 1fr; }
        .trust-strip-grid { grid-template-columns: 1fr; }
        .cta-form { flex-direction: column; }
        .footer-grid { grid-template-columns: 1fr; }
        .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
        .top-meta-inner { flex-direction: column; gap: 0.3rem; text-align: center; }
      }
    }