/* roulang page: index */
:root {
      --gcp-primary: #5E3BEE;
      --gcp-primary-hover: #4e2ed1;
      --gcp-accent: #00E599;
      --gcp-accent-hover: #00c784;
      --gcp-bg-main: #0B0E14;
      --gcp-bg-surface: #121721;
      --gcp-bg-card: #161C28;
      --gcp-text-title: #E6EDF3;
      --gcp-text-muted: #8B949E;
      --gcp-border: rgba(255, 255, 255, 0.08);
      --gcp-border-highlight: rgba(94, 59, 238, 0.4);
      --gcp-glow: 0 8px 24px rgba(0, 0, 0, 0.4), 0 0 14px rgba(94, 59, 238, 0.2);
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      background-color: var(--gcp-bg-main);
      color: var(--gcp-text-title);
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
      overflow-x: hidden;
      margin: 0;
      padding: 0;
    }

    a { text-decoration: none; color: inherit; transition: all 0.25s ease; }
    img { max-width: 100%; height: auto; display: block; }

    /* 顶栏 */
    .top-info-bar {
      background-color: #06080C;
      border-bottom: 1px solid var(--gcp-border);
      font-size: 13px;
      color: var(--gcp-text-muted);
      padding: 6px 0;
    }
    .top-info-bar a:hover { color: var(--gcp-accent); }

    .site-navbar {
      background: rgba(11, 14, 20, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--gcp-border);
      position: sticky;
      top: 0;
      z-index: 1030;
      padding: 14px 0;
    }
    .site-brand {
      font-size: 22px;
      font-weight: 700;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 10px;
      letter-spacing: -0.5px;
    }
    .site-brand-badge {
      background: linear-gradient(135deg, var(--gcp-primary), #8c6cf5);
      color: #fff;
      font-size: 12px;
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
    }
    .nav-link {
      color: var(--gcp-text-muted) !important;
      font-size: 15px;
      font-weight: 500;
      padding: 8px 16px !important;
      border-radius: 6px;
    }
    .nav-link:hover, .nav-link.active {
      color: #fff !important;
      background: rgba(255, 255, 255, 0.05);
    }
    .btn-brand-primary {
      background-color: var(--gcp-primary);
      color: #fff;
      border-radius: 50px;
      padding: 8px 22px;
      font-weight: 600;
      border: 1px solid transparent;
      box-shadow: 0 4px 14px rgba(94, 59, 238, 0.35);
    }
    .btn-brand-primary:hover {
      background-color: var(--gcp-primary-hover);
      color: #fff;
      transform: translateY(-2px);
    }
    .btn-brand-accent {
      background-color: var(--gcp-accent);
      color: #05140d;
      border-radius: 50px;
      padding: 10px 24px;
      font-weight: 700;
      border: none;
      box-shadow: 0 4px 16px rgba(0, 229, 153, 0.25);
    }
    .btn-brand-accent:hover {
      background-color: var(--gcp-accent-hover);
      color: #05140d;
      transform: translateY(-2px);
    }
    .btn-brand-outline {
      border: 1px solid var(--gcp-border-highlight);
      color: #fff;
      border-radius: 50px;
      padding: 10px 24px;
      font-weight: 600;
      background: rgba(22, 28, 40, 0.6);
    }
    .btn-brand-outline:hover {
      background: var(--gcp-primary);
      border-color: var(--gcp-primary);
      color: #fff;
    }

    /* 板块通用间距与标题 */
    section {
      padding: 85px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--gcp-bg-surface);
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      color: var(--gcp-accent);
      text-transform: uppercase;
      font-weight: 600;
      letter-spacing: 1px;
      background: rgba(0, 229, 153, 0.1);
      padding: 4px 12px;
      border-radius: 50px;
      margin-bottom: 14px;
      border: 1px solid rgba(0, 229, 153, 0.2);
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      color: var(--gcp-text-muted);
      font-size: 16px;
      max-width: 780px;
      margin-bottom: 48px;
    }

    /* Hero 大图轮播与强转化 */
    .hero-section {
      position: relative;
      min-height: 640px;
      padding: 100px 0 80px;
      display: flex;
      align-items: center;
      background: url('/assets/images/729efb437e1cadba.jpg') center/cover no-repeat;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(11, 14, 20, 0.85) 0%, rgba(11, 14, 20, 0.98) 100%);
      z-index: 1;
    }
    .hero-content {
      position: relative;
      z-index: 2;
    }
    .hero-title {
      font-size: 46px;
      font-weight: 800;
      line-height: 1.25;
      color: #fff;
      margin-bottom: 20px;
    }
    .hero-title span {
      background: linear-gradient(90deg, #fff, var(--gcp-accent));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-summary {
      font-size: 16px;
      color: #A3B1C2;
      margin-bottom: 32px;
      line-height: 1.8;
      max-width: 680px;
    }
    .hero-metrics-pill {
      display: inline-flex;
      align-items: center;
      gap: 16px;
      padding: 10px 20px;
      background: rgba(22, 28, 40, 0.85);
      border: 1px solid var(--gcp-border);
      border-radius: 50px;
      font-size: 14px;
      color: var(--gcp-text-muted);
      margin-bottom: 24px;
    }
    .hero-metrics-pill strong { color: var(--gcp-accent); }
    .portal-quick-grid {
      background: rgba(22, 28, 40, 0.85);
      border: 1px solid var(--gcp-border);
      border-radius: 16px;
      padding: 24px;
      box-shadow: var(--gcp-glow);
    }
    .portal-card-btn {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--gcp-border);
      border-radius: 10px;
      padding: 16px;
      display: flex;
      flex-direction: column;
      gap: 6px;
      color: #fff;
      transition: all 0.3s;
    }
    .portal-card-btn:hover {
      background: rgba(94, 59, 238, 0.15);
      border-color: var(--gcp-primary);
      transform: translateY(-3px);
      color: var(--gcp-accent);
    }

    /* Pill 独立横滑导航条 */
    .quick-nav-bar {
      background: #0E121A;
      border-top: 1px solid var(--gcp-border);
      border-bottom: 1px solid var(--gcp-border);
      position: sticky;
      top: 67px;
      z-index: 1020;
      padding: 10px 0;
    }
    .pill-scroll-wrapper {
      display: flex;
      gap: 10px;
      overflow-x: auto;
      white-space: nowrap;
      scrollbar-width: none;
      -webkit-overflow-scrolling: touch;
      padding: 2px 4px;
    }
    .pill-scroll-wrapper::-webkit-scrollbar { display: none; }
    .pill-item {
      font-size: 14px;
      font-weight: 600;
      color: var(--gcp-text-muted);
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--gcp-border);
      border-radius: 50px;
      padding: 6px 18px;
      display: inline-block;
    }
    .pill-item:hover, .pill-item.active {
      color: #fff;
      background: var(--gcp-primary);
      border-color: var(--gcp-primary);
      box-shadow: 0 2px 10px rgba(94, 59, 238, 0.4);
    }

    /* 卡片与组件重构 */
    .gcp-card {
      background-color: var(--gcp-bg-card);
      border: 1px solid var(--gcp-border);
      border-radius: 12px;
      padding: 28px;
      height: 100%;
      display: flex;
      flex-direction: column;
      transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
    }
    .gcp-card:hover {
      transform: translateY(-6px);
      border-color: var(--gcp-primary);
      box-shadow: var(--gcp-glow);
    }
    .gcp-icon-box {
      width: 52px;
      height: 52px;
      background: rgba(94, 59, 238, 0.12);
      border: 1px solid rgba(94, 59, 238, 0.3);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--gcp-accent);
      font-size: 24px;
      margin-bottom: 20px;
    }
    .gcp-card-title {
      font-size: 19px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
    }
    .gcp-card-text {
      font-size: 14px;
      color: var(--gcp-text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .gcp-badge {
      display: inline-block;
      font-size: 12px;
      padding: 3px 8px;
      border-radius: 4px;
      background: rgba(255, 255, 255, 0.06);
      color: #A3B1C2;
    }

    /* 架构图板块 */
    .arch-code-panel {
      background: #090C11;
      border: 1px solid var(--gcp-border);
      border-radius: 12px;
      padding: 24px;
      font-family: monospace;
      font-size: 13px;
      color: #79C0FF;
      line-height: 1.8;
      box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.6);
    }
    .arch-param-item {
      display: flex;
      justify-content: space-between;
      border-bottom: 1px dashed var(--gcp-border);
      padding: 10px 0;
      font-size: 14px;
    }
    .arch-param-item span:first-child { color: var(--gcp-text-muted); }
    .arch-param-item span:last-child { color: #fff; font-weight: 600; }

    /* 产品定价与算力规格卡片 */
    .product-price {
      font-size: 32px;
      font-weight: 800;
      color: #fff;
      margin: 16px 0 24px;
    }
    .product-price span {
      font-size: 14px;
      color: var(--gcp-text-muted);
      font-weight: 400;
    }
    .spec-list {
      list-style: none;
      padding: 0;
      margin: 0 0 28px;
    }
    .spec-list li {
      padding: 8px 0;
      font-size: 14px;
      color: #C9D1D9;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .spec-list li i { color: var(--gcp-accent); font-size: 16px; }

    /* 深色沉浸案例 */
    .case-banner-box {
      background: linear-gradient(135deg, rgba(22, 28, 40, 0.95), rgba(9, 12, 17, 0.98));
      border: 1px solid var(--gcp-border-highlight);
      border-radius: 16px;
      padding: 40px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    }

    /* 指标统计条 */
    .metric-counter {
      font-size: 40px;
      font-weight: 800;
      color: #fff;
      line-height: 1.1;
      margin-bottom: 8px;
      letter-spacing: -1px;
    }
    .metric-counter span { color: var(--gcp-accent); }
    .metric-label {
      font-size: 14px;
      color: var(--gcp-text-muted);
    }

    /* 架构选型对比表 */
    .comparison-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      background: var(--gcp-bg-card);
      border-radius: 12px;
      overflow: hidden;
      border: 1px solid var(--gcp-border);
    }
    .comparison-table th, .comparison-table td {
      padding: 16px 20px;
      text-align: left;
      border-bottom: 1px solid var(--gcp-border);
      font-size: 14px;
    }
    .comparison-table th {
      background: #0D1117;
      color: #fff;
      font-weight: 700;
    }
    .comparison-table tr:last-child td { border-bottom: none; }
    .comparison-table .highlight-col {
      background: rgba(94, 59, 238, 0.08);
      color: #fff;
      font-weight: 600;
    }

    /* FAQ 手风琴重构 */
    .accordion-item {
      background-color: var(--gcp-bg-card);
      border: 1px solid var(--gcp-border);
      margin-bottom: 12px;
      border-radius: 10px !important;
      overflow: hidden;
    }
    .accordion-button {
      background-color: var(--gcp-bg-card);
      color: #fff;
      font-size: 16px;
      font-weight: 600;
      padding: 20px 24px;
      box-shadow: none !important;
    }
    .accordion-button:not(.collapsed) {
      color: var(--gcp-accent);
      background-color: rgba(94, 59, 238, 0.06);
    }
    .accordion-button::after {
      filter: invert(1) brightness(200%);
    }
    .accordion-body {
      color: var(--gcp-text-muted);
      font-size: 14px;
      line-height: 1.8;
      padding: 0 24px 22px;
    }

    /* 全局保障条 */
    .sla-banner {
      background: #090C11;
      border-top: 1px solid var(--gcp-border);
      border-bottom: 1px solid var(--gcp-border);
      padding: 40px 0;
    }
    .sla-item {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .sla-icon {
      font-size: 32px;
      color: var(--gcp-accent);
    }

    /* 底部浮动转化条 */
    .sticky-cta-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      z-index: 1040;
      background: rgba(14, 18, 26, 0.96);
      backdrop-filter: blur(16px);
      border-top: 1px solid var(--gcp-border-highlight);
      padding: 12px 0;
      box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.5);
    }

    /* 页脚 */
    footer {
      background-color: #06080C;
      border-top: 1px solid var(--gcp-border);
      padding: 70px 0 100px;
      font-size: 14px;
      color: var(--gcp-text-muted);
    }
    .footer-title {
      font-size: 16px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li { margin-bottom: 10px; }
    .footer-links a:hover { color: var(--gcp-accent); }
    .footer-copyright {
      border-top: 1px solid var(--gcp-border);
      margin-top: 50px;
      padding-top: 24px;
      font-size: 13px;
      text-align: center;
    }

    @media (max-width: 991.98px) {
      .hero-title { font-size: 34px; }
      section { padding: 60px 0; }
      .section-title { font-size: 26px; }
    }
    @media (max-width: 576px) {
      .hero-title { font-size: 28px; }
      .portal-quick-grid { margin-top: 32px; }
    }