/* roulang page: index */
:root {
      --bg-primary: #F8F9FB;
      --bg-dark: #0A0B0E;
      --bg-card: #FFFFFF;
      --bg-dark-card: #14161C;
      --text-main: #111215;
      --text-body: #383B42;
      --text-muted: #6C727F;
      --text-light: #F3F4F6;
      --brand: #5E43F3;
      --brand-hover: #4B32D6;
      --brand-glow: rgba(94, 67, 243, 0.15);
      --accent: #00E599;
      --border-light: rgba(0, 0, 0, 0.08);
      --border-dark: rgba(255, 255, 255, 0.08);
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.03);
      --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.05);
      --shadow-lg: 0 16px 40px rgba(94, 67, 243, 0.08);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 14px;
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: 'PingFang SC', 'Hiragino Sans GB', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
      background-color: var(--bg-primary);
      color: var(--text-body);
      line-height: 1.65;
      overflow-x: hidden;
    }

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

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部状态栏与主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-light);
    }

    .top-status-bar {
      background: #0f1015;
      color: #9499A6;
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px solid var(--border-dark);
    }
    .status-flex {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .status-left {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      background-color: var(--accent);
      border-radius: 50%;
      box-shadow: 0 0 0 0 rgba(0, 229, 153, 0.7);
      animation: pulse-green 2s infinite;
    }
    @keyframes pulse-green {
      0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 229, 153, 0.7); }
      70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(0, 229, 153, 0); }
      100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 229, 153, 0); }
    }
    .status-right {
      display: flex;
      gap: 20px;
    }
    .status-link {
      color: #b0b4be;
    }
    .status-link:hover {
      color: #ffffff;
    }

    .main-nav {
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.02em;
    }
    .brand-logo span.badge-tag {
      background: var(--brand);
      color: #fff;
      font-size: 11px;
      font-weight: 600;
      padding: 2px 7px;
      border-radius: 4px;
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }

    .nav-links {
      display: flex;
      gap: 32px;
      list-style: none;
    }
    .nav-link-item {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-body);
      position: relative;
      padding: 8px 0;
    }
    .nav-link-item:hover, .nav-link-item.active {
      color: var(--brand);
    }
    .nav-link-item.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--brand);
      border-radius: 2px;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 600;
      padding: 10px 20px;
      border-radius: var(--radius-sm);
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
      white-space: nowrap;
    }
    .btn-brand {
      background: var(--brand);
      color: #fff;
      box-shadow: 0 4px 14px rgba(94, 67, 243, 0.28);
    }
    .btn-brand:hover {
      background: var(--brand-hover);
      box-shadow: 0 6px 20px rgba(94, 67, 243, 0.36);
      transform: translateY(-1px);
    }
    .btn-outline {
      border-color: var(--border-light);
      background: #fff;
      color: var(--text-main);
    }
    .btn-outline:hover {
      background: #f0f2f7;
      border-color: #cbd1de;
    }
    .btn-ghost {
      color: var(--text-body);
      background: transparent;
    }
    .btn-ghost:hover {
      color: var(--brand);
      background: rgba(94, 67, 243, 0.05);
    }
    .btn-sm {
      padding: 7px 14px;
      font-size: 13px;
    }
    .btn-lg {
      padding: 14px 28px;
      font-size: 16px;
      border-radius: var(--radius-md);
    }

    /* 板块统一排版 */
    section {
      padding: 100px 0;
      position: relative;
    }
    .section-head {
      margin-bottom: 56px;
      max-width: 780px;
    }
    .section-head.center {
      margin-left: auto;
      margin-right: auto;
      text-align: center;
    }
    .badge-sub {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      color: var(--brand);
      text-transform: uppercase;
      letter-spacing: 0.1em;
      margin-bottom: 12px;
      background: rgba(94, 67, 243, 0.08);
      padding: 4px 12px;
      border-radius: 20px;
    }
    .section-title {
      font-size: 34px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.25;
      letter-spacing: -0.02em;
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 1: 地图/本地感知级首屏 (Hero Section) */
    .hero-spatial {
      background: radial-gradient(circle at 80% 20%, rgba(94, 67, 243, 0.06) 0%, transparent 60%),
                  radial-gradient(circle at 20% 80%, rgba(0, 229, 153, 0.05) 0%, transparent 50%),
                  #ffffff;
      border-bottom: 1px solid var(--border-light);
      padding: 110px 0 90px;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-local-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #f1f3f9;
      border: 1px solid rgba(0, 0, 0, 0.06);
      padding: 6px 14px;
      border-radius: 30px;
      font-size: 13px;
      color: var(--text-body);
      margin-bottom: 24px;
    }
    .hero-local-tag .region-icon {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--brand);
    }
    .hero-h1 {
      font-size: 52px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.15;
      letter-spacing: -0.03em;
      margin-bottom: 24px;
    }
    .hero-p {
      font-size: 17px;
      color: var(--text-body);
      line-height: 1.75;
      margin-bottom: 36px;
    }
    .hero-btns {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 40px;
    }
    .hero-stats-quick {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      padding-top: 28px;
      border-top: 1px solid var(--border-light);
    }
    .quick-stat-item h4 {
      font-size: 24px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .quick-stat-item p {
      font-size: 13px;
      color: var(--text-muted);
    }
    .hero-visual-card {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-light);
      background: #fff;
    }
    .hero-visual-card img {
      width: 100%;
      height: 420px;
      object-fit: cover;
    }
    .hero-overlay-tag {
      position: absolute;
      bottom: 20px;
      left: 20px;
      right: 20px;
      background: rgba(10, 11, 14, 0.85);
      backdrop-filter: blur(12px);
      padding: 16px 20px;
      border-radius: var(--radius-md);
      color: #fff;
      display: flex;
      justify-content: space-between;
      align-items: center;
      border: 1px solid var(--border-dark);
    }
    .hero-overlay-tag span {
      font-size: 13px;
      color: #9da4b3;
    }
    .hero-overlay-tag strong {
      font-size: 14px;
      color: var(--accent);
    }

    /* 板块 2: 合集目录 (Catalog Directory) */
    .section-catalog {
      background: var(--bg-primary);
    }
    .catalog-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .catalog-item {
      background: #fff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: var(--transition);
    }
    .catalog-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(94, 67, 243, 0.2);
    }
    .catalog-index {
      font-size: 13px;
      font-weight: 700;
      color: var(--brand);
      margin-bottom: 12px;
      display: inline-block;
    }
    .catalog-item h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .catalog-item p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 3: 技术参数与行业认证条 (Trust & Specs) */
    .section-specs {
      background: #ffffff;
      padding: 60px 0;
      border-top: 1px solid var(--border-light);
      border-bottom: 1px solid var(--border-light);
    }
    .specs-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
    }
    .spec-box {
      border-left: 2px solid var(--brand);
      padding-left: 18px;
    }
    .spec-num {
      font-size: 28px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 4px;
      letter-spacing: -0.02em;
    }
    .spec-label {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 板块 4: 功能分组全景 (Core Capabilities) */
    .section-capabilities {
      background: var(--bg-primary);
    }
    .bento-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 28px;
    }
    .bento-card {
      background: #fff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 40px;
      position: relative;
      overflow: hidden;
      transition: var(--transition);
    }
    .bento-card:hover {
      box-shadow: var(--shadow-md);
    }
    .bento-card.full-col {
      grid-column: span 2;
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      align-items: center;
      gap: 40px;
    }
    .bento-tag {
      background: rgba(94, 67, 243, 0.08);
      color: var(--brand);
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 12px;
      font-weight: 700;
      display: inline-block;
      margin-bottom: 16px;
    }
    .bento-card h3 {
      font-size: 22px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .bento-card p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 5: 架构与管线场景 (Pipelines) */
    .section-pipelines {
      background: #fff;
    }
    .pipeline-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .pipeline-pane {
      background: var(--bg-primary);
      border-radius: var(--radius-lg);
      padding: 36px;
      border: 1px solid var(--border-light);
    }
    .pipeline-pane h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .pane-badge {
      font-size: 12px;
      background: #e5e8f0;
      padding: 2px 8px;
      border-radius: 4px;
      color: var(--text-body);
    }
    .pipeline-pane p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .pipeline-steps {
      list-style: none;
    }
    .pipeline-steps li {
      display: flex;
      gap: 14px;
      margin-bottom: 16px;
      font-size: 14px;
      color: var(--text-body);
    }
    .pipeline-steps li strong {
      color: var(--brand);
      min-width: 24px;
    }

    /* 板块 6: 引擎核心优势区 (6 Cards Grid) */
    .section-engine-pros {
      background: var(--bg-primary);
    }
    .pros-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .pro-card {
      background: #fff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 32px;
      transition: var(--transition);
    }
    .pro-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(94, 67, 243, 0.3);
    }
    .pro-icon-bar {
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, rgba(94,67,243,0.1), rgba(0,229,153,0.1));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      color: var(--brand);
      font-weight: 700;
      margin-bottom: 20px;
    }
    .pro-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .pro-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
    }
    .pro-metric {
      font-size: 13px;
      font-weight: 600;
      color: var(--accent);
      background: #0A0B0E;
      display: inline-block;
      padding: 4px 10px;
      border-radius: 4px;
    }

    /* 板块 7: 相关推荐与交互演示 (Interactions Showcase) */
    .section-showcase {
      background: #fff;
    }
    .showcase-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
      margin-bottom: 64px;
    }
    .showcase-row:last-child {
      margin-bottom: 0;
    }
    .showcase-row.reverse {
      direction: rtl;
    }
    .showcase-row.reverse > * {
      direction: ltr;
    }
    .showcase-img-wrap {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-light);
    }
    .showcase-img-wrap img {
      width: 100%;
      height: 340px;
      object-fit: cover;
    }
    .showcase-info h3 {
      font-size: 26px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }
    .showcase-info p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 24px;
    }
    .param-pill-box {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
    }
    .param-pill {
      font-size: 12px;
      background: #f1f3f9;
      color: var(--text-body);
      padding: 6px 12px;
      border-radius: 4px;
      font-family: monospace;
    }

    /* 板块 8: 深色沉浸体验区 (Dark Immersion Engine) */
    .section-dark-immersion {
      background: var(--bg-dark);
      color: var(--text-light);
      position: relative;
      overflow: hidden;
    }
    .dark-glow {
      position: absolute;
      width: 500px;
      height: 500px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(94, 67, 243, 0.25) 0%, transparent 70%);
      top: -100px;
      right: -100px;
      pointer-events: none;
    }
    .dark-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .dark-title {
      font-size: 36px;
      font-weight: 800;
      color: #fff;
      line-height: 1.25;
      margin-bottom: 20px;
    }
    .dark-desc {
      font-size: 16px;
      color: #9ca3af;
      line-height: 1.8;
      margin-bottom: 32px;
    }
    .terminal-box {
      background: #111318;
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 24px;
      font-family: Consolas, Monaco, monospace;
      font-size: 13px;
      color: #d1d5db;
      line-height: 1.8;
    }
    .terminal-header {
      display: flex;
      gap: 6px;
      margin-bottom: 16px;
      padding-bottom: 12px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .term-btn {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      display: inline-block;
    }
    .t-red { background: #ef4444; }
    .t-yellow { background: #eab308; }
    .t-green { background: #22c55e; }
    .term-code-line {
      display: block;
      color: var(--accent);
    }
    .term-code-comment {
      color: #6b7280;
    }

    /* 板块 9: 关键数据统计条 (Metrics Bar) */
    .section-metrics {
      background: linear-gradient(180deg, #0A0B0E 0%, #151821 100%);
      color: #fff;
      padding: 70px 0;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
    }
    .metrics-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .metric-cell h3 {
      font-size: 42px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 6px;
      letter-spacing: -0.03em;
    }
    .metric-cell h3 span {
      color: var(--accent);
      font-size: 26px;
    }
    .metric-cell p {
      font-size: 14px;
      color: #9ca3af;
      letter-spacing: 0.02em;
    }

    /* 板块 10: 成功案例深度拆解 (Case Studies) */
    .section-case-studies {
      background: #ffffff;
    }
    .case-card-deep {
      background: var(--bg-primary);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      margin-bottom: 32px;
    }
    .case-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      min-height: 320px;
    }
    .case-card-body {
      padding: 40px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .case-label {
      font-size: 12px;
      font-weight: 700;
      color: var(--brand);
      text-transform: uppercase;
      letter-spacing: 0.08em;
      margin-bottom: 12px;
    }
    .case-card-body h3 {
      font-size: 24px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.35;
    }
    .case-card-body p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .case-metric-pills {
      display: flex;
      gap: 16px;
    }
    .case-metric-pill {
      background: #ffffff;
      border: 1px solid var(--border-light);
      padding: 10px 16px;
      border-radius: var(--radius-sm);
    }
    .case-metric-pill strong {
      display: block;
      font-size: 18px;
      color: var(--brand);
    }
    .case-metric-pill span {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块 11: 资讯与技术简报 (News / Articles) */
    .section-news-feed {
      background: var(--bg-primary);
    }
    .news-stack {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .news-item {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px 32px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: var(--transition);
    }
    .news-item:hover {
      box-shadow: var(--shadow-sm);
      border-color: rgba(94, 67, 243, 0.25);
    }
    .news-content {
      max-width: 820px;
    }
    .news-meta {
      display: flex;
      gap: 12px;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .news-meta span.tag {
      color: var(--brand);
      font-weight: 600;
    }
    .news-content h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .news-content p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .news-action {
      margin-left: 24px;
      flex-shrink: 0;
    }

    /* 板块 12: 收藏分享与生产力工具箱 (Toolbox) */
    .section-toolbox {
      background: #ffffff;
    }
    .tool-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .tool-box-card {
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px;
      background: var(--bg-primary);
      transition: var(--transition);
    }
    .tool-box-card:hover {
      background: #ffffff;
      box-shadow: var(--shadow-md);
      border-color: rgba(94, 67, 243, 0.2);
    }
    .tool-box-card h4 {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .tool-box-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .tool-badge-row {
      display: flex;
      gap: 8px;
    }
    .tool-tag {
      font-size: 11px;
      background: #ffffff;
      border: 1px solid var(--border-light);
      padding: 2px 8px;
      border-radius: 4px;
      color: var(--text-body);
    }

    /* 板块 13: 专题索引与管线图谱 (Pipeline Index) */
    .section-topic-index {
      background: var(--bg-primary);
    }
    .topic-index-table {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 32px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
    }
    .topic-col h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      border-bottom: 2px solid var(--brand);
      padding-bottom: 10px;
      margin-bottom: 16px;
    }
    .topic-list {
      list-style: none;
    }
    .topic-list li {
      margin-bottom: 12px;
    }
    .topic-list li a {
      font-size: 14px;
      color: var(--text-body);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .topic-list li a:hover {
      color: var(--brand);
    }
    .topic-list li span.count {
      font-size: 12px;
      color: var(--text-muted);
      background: #f1f3f9;
      padding: 1px 6px;
      border-radius: 4px;
    }

    /* 板块 14: 定价方案与算力套餐 (Pricing & Tiers) */
    .section-pricing {
      background: #ffffff;
    }
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      align-items: stretch;
    }
    .price-card {
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 40px 32px;
      background: #ffffff;
      position: relative;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .price-card:hover {
      box-shadow: var(--shadow-md);
    }
    .price-card.featured {
      border-color: var(--brand);
      box-shadow: var(--shadow-lg);
      background: linear-gradient(180deg, #faf9ff 0%, #ffffff 100%);
    }
    .featured-badge {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--brand);
      color: #fff;
      font-size: 12px;
      font-weight: 700;
      padding: 3px 14px;
      border-radius: 20px;
    }
    .price-head h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .price-head p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 24px;
      min-height: 42px;
    }
    .price-val {
      font-size: 38px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 24px;
      letter-spacing: -0.03em;
    }
    .price-val span {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
    }
    .price-features {
      list-style: none;
      margin-bottom: 32px;
      flex-grow: 1;
    }
    .price-features li {
      font-size: 14px;
      color: var(--text-body);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .price-features li::before {
      content: "✓";
      color: var(--accent);
      background: #0A0B0E;
      width: 18px;
      height: 18px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 11px;
      font-weight: bold;
    }

    /* 板块 15: 用户口碑与开发者评价墙 (Testimonials) */
    .section-testimonials {
      background: var(--bg-primary);
    }
    .testi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testi-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 30px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-text {
      font-size: 15px;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 20px;
      position: relative;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-light);
      padding-top: 16px;
    }
    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: #e2e5ec;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 700;
      color: var(--brand);
    }
    .author-info h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-info p {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块 16: 技术解答与常见疑难 (FAQ) */
    .section-faq {
      background: #ffffff;
    }
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      background: var(--bg-primary);
      overflow: hidden;
    }
    .faq-question {
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-answer {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* 板块 17: 统一收口行动区 (Final Single CTA) */
    .section-final-cta {
      background: linear-gradient(135deg, #111218 0%, #1e1b38 100%);
      color: #ffffff;
      padding: 90px 0;
      position: relative;
    }
    .cta-box-center {
      text-align: center;
      max-width: 720px;
      margin: 0 auto;
    }
    .cta-box-center h2 {
      font-size: 38px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 18px;
      letter-spacing: -0.02em;
    }
    .cta-box-center p {
      font-size: 16px;
      color: #b0b4c2;
      line-height: 1.7;
      margin-bottom: 36px;
    }
    .cta-input-group {
      display: flex;
      max-width: 520px;
      margin: 0 auto 20px;
      gap: 10px;
    }
    .cta-input {
      flex-grow: 1;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-sm);
      padding: 12px 18px;
      font-size: 14px;
      color: #ffffff;
      outline: none;
    }
    .cta-input:focus {
      border-color: var(--brand);
    }
    .cta-input::placeholder {
      color: #7b8092;
    }
    .cta-sub-note {
      font-size: 13px;
      color: #787d8f;
    }

    /* 页脚 (Footer) */
    .site-footer {
      background: #090a0d;
      color: #8b90a0;
      padding: 80px 0 36px;
      border-top: 1px solid var(--border-dark);
      font-size: 14px;
    }
    .footer-top-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 60px;
    }
    .footer-brand h3 {
      font-size: 20px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 16px;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 20px;
      font-size: 14px;
      color: #7d8294;
    }
    .footer-col h4 {
      font-size: 15px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #8b90a0;
    }
    .footer-links a:hover {
      color: #ffffff;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
    }

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .hero-grid,
      .bento-grid,
      .bento-card.full-col,
      .pipeline-split,
      .showcase-row,
      .dark-grid,
      .case-card-deep {
        grid-template-columns: 1fr;
      }
      .catalog-grid,
      .pros-grid,
      .pricing-grid,
      .testi-grid,
      .topic-index-table {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-status-bar {
        display: none;
      }
      .nav-links {
        display: none;
      }
      .hero-h1 {
        font-size: 36px;
      }
      .section-title {
        font-size: 26px;
      }
      .specs-grid,
      .metrics-row,
      .tool-grid {
        grid-template-columns: 1fr 1fr;
      }
      .hero-visual-card img {
        height: 280px;
      }
      .news-item {
        flex-direction: column;
        align-items: flex-start;
      }
      .news-action {
        margin-left: 0;
        margin-top: 16px;
      }
      .cta-input-group {
        flex-direction: column;
      }
    }

    @media (max-width: 520px) {
      .catalog-grid,
      .pros-grid,
      .specs-grid,
      .metrics-row,
      .pricing-grid,
      .testi-grid,
      .tool-grid,
      .topic-index-table,
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
      .hero-stats-quick {
        grid-template-columns: 1fr;
      }
      .hero-overlay-tag {
        position: static;
        margin-top: 12px;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }