/* roulang page: index */
:root {
      --bg-main: #070b19;
      --bg-card: rgba(13, 21, 39, 0.72);
      --bg-card-hover: rgba(22, 34, 60, 0.85);
      --bg-elevated: #0d1527;
      --bg-deep: #050813;
      --primary: #1d63ff;
      --primary-glow: #00d2ff;
      --accent: #7928ca;
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
      --text-dim: #64748b;
      --glass-border: rgba(255, 255, 255, 0.08);
      --glass-border-active: rgba(0, 210, 255, 0.3);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      overflow-x: hidden;
      position: relative;
    }

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

    /* 顶部服务微型条 */
    .top-bar {
      background: rgba(7, 11, 25, 0.85);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--glass-border);
      font-size: 0.82rem;
      color: var(--text-muted);
      padding: 6px 0;
    }

    /* 浮动内缩导航 */
    .floating-nav-wrapper {
      position: sticky;
      top: 14px;
      z-index: 1050;
      padding: 0 16px;
    }

    .floating-navbar {
      background: rgba(13, 21, 39, 0.82);
      backdrop-filter: blur(16px);
      border: 1px solid var(--glass-border);
      border-radius: 50px;
      padding: 10px 24px;
      box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
      transition: all 0.3s ease;
    }

    .brand-logo {
      font-size: 1.35rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      background: linear-gradient(135deg, #ffffff 30%, var(--primary-glow) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .brand-logo i {
      -webkit-text-fill-color: var(--primary-glow);
    }

    .nav-link-custom {
      color: var(--text-muted);
      font-size: 0.94rem;
      font-weight: 500;
      padding: 6px 14px;
      border-radius: 20px;
      transition: all 0.2s;
    }

    .nav-link-custom:hover,
    .nav-link-custom.active {
      color: #ffffff;
      background: rgba(255, 255, 255, 0.06);
    }

    /* 通用发光按钮 */
    .btn-glow {
      background: linear-gradient(135deg, var(--primary) 0%, #1545b5 100%);
      color: #ffffff !important;
      font-weight: 600;
      border: 1px solid rgba(0, 210, 255, 0.4);
      border-radius: 40px;
      padding: 9px 24px;
      box-shadow: 0 0 18px rgba(0, 210, 255, 0.3);
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }

    .btn-glow:hover {
      box-shadow: 0 0 28px rgba(29, 99, 255, 0.65);
      transform: translateY(-2px);
      border-color: var(--primary-glow);
    }

    .btn-secondary-glow {
      background: rgba(255, 255, 255, 0.05);
      color: var(--text-main) !important;
      border: 1px solid var(--glass-border);
      border-radius: 40px;
      padding: 9px 22px;
      font-weight: 500;
      transition: all 0.3s ease;
    }

    .btn-secondary-glow:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: rgba(255, 255, 255, 0.25);
    }

    /* 基础区块分隔 */
    section {
      padding: 85px 0;
      position: relative;
    }

    .section-header {
      margin-bottom: 48px;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      text-transform: uppercase;
      font-weight: 700;
      letter-spacing: 1.5px;
      padding: 4px 14px;
      border-radius: 30px;
      background: rgba(0, 210, 255, 0.1);
      color: var(--primary-glow);
      border: 1px solid rgba(0, 210, 255, 0.2);
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      margin-bottom: 14px;
    }

    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto;
      line-height: 1.7;
    }

    /* 玻璃拟态卡片 */
    .glass-card {
      background: var(--bg-card);
      backdrop-filter: blur(12px);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-lg);
      padding: 28px;
      transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
      height: 100%;
      position: relative;
      overflow: hidden;
    }

    .glass-card:hover {
      background: var(--bg-card-hover);
      border-color: var(--glass-border-active);
      transform: translateY(-4px);
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.35);
    }

    /* Hero：路线图预告与节点体系 */
    #hero {
      padding: 60px 0 90px;
      background: radial-gradient(circle at 50% 20%, rgba(29, 99, 255, 0.18) 0%, rgba(7, 11, 25, 0.95) 75%),
                  url('/assets/images/62f39073fd603fa8.jpg') center/cover no-repeat;
      background-blend-mode: overlay;
    }

    .hero-h1 {
      font-size: 2.75rem;
      font-weight: 850;
      line-height: 1.25;
      letter-spacing: -1px;
      background: linear-gradient(180deg, #ffffff 40%, #cbd5e1 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 20px;
    }

    .hero-intro {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.8;
      max-width: 820px;
      margin: 0 auto 36px;
    }

    .roadmap-timeline-box {
      background: rgba(13, 21, 39, 0.7);
      border: 1px solid var(--glass-border);
      backdrop-filter: blur(20px);
      border-radius: var(--radius-lg);
      padding: 30px 24px;
      margin-top: 40px;
    }

    .node-step {
      position: relative;
      padding: 10px 14px;
      text-align: left;
    }

    .node-tag {
      font-size: 0.72rem;
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 700;
      display: inline-block;
      margin-bottom: 6px;
    }

    .node-tag.current {
      background: rgba(0, 210, 255, 0.2);
      color: var(--primary-glow);
      border: 1px solid rgba(0, 210, 255, 0.4);
    }

    .node-tag.upcoming {
      background: rgba(121, 40, 202, 0.2);
      color: #d8b4fe;
      border: 1px solid rgba(121, 40, 202, 0.4);
    }

    .node-tag.future {
      background: rgba(255, 255, 255, 0.08);
      color: var(--text-muted);
      border: 1px solid var(--glass-border);
    }

    /* 亮点卡片徽标 */
    .feature-icon-bubble {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(29, 99, 255, 0.2) 0%, rgba(0, 210, 255, 0.1) 100%);
      border: 1px solid rgba(0, 210, 255, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      color: var(--primary-glow);
      margin-bottom: 20px;
    }

    .feature-chip {
      font-size: 0.76rem;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--glass-border);
      color: var(--text-muted);
      padding: 3px 10px;
      border-radius: 12px;
      margin-right: 6px;
      margin-bottom: 6px;
      display: inline-block;
    }

    /* 状态与指标卡片 */
    .metric-value {
      font-size: 2.3rem;
      font-weight: 800;
      letter-spacing: -1px;
      color: #ffffff;
      text-shadow: 0 0 15px rgba(0, 210, 255, 0.35);
      line-height: 1.1;
      margin-bottom: 6px;
    }

    .metric-label {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 解决方案方案对比卡 */
    .tier-card {
      border: 1px solid var(--glass-border);
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      padding: 36px 28px;
      height: 100%;
      display: flex;
      flex-direction: column;
      position: relative;
      transition: all 0.3s ease;
    }

    .tier-card.featured {
      background: linear-gradient(180deg, rgba(29, 99, 255, 0.15) 0%, rgba(13, 21, 39, 0.9) 100%);
      border: 1px solid rgba(0, 210, 255, 0.5);
      transform: scale(1.03);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    }

    .tier-badge {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary-glow);
      color: #070b19;
      font-size: 0.72rem;
      font-weight: 800;
      padding: 3px 14px;
      border-radius: 20px;
      letter-spacing: 0.5px;
    }

    /* 客户评价墙 */
    .quote-box {
      font-size: 0.95rem;
      line-height: 1.7;
      color: #cbd5e1;
      margin-bottom: 18px;
    }

    .client-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      color: var(--primary-glow);
      border: 1px solid var(--glass-border);
    }

    /* 手风琴自定义 */
    .accordion-item {
      background: var(--bg-card) !important;
      border: 1px solid var(--glass-border) !important;
      border-radius: var(--radius-md) !important;
      margin-bottom: 12px;
      overflow: hidden;
    }

    .accordion-button {
      background: transparent !important;
      color: var(--text-main) !important;
      font-weight: 600;
      font-size: 1.02rem;
      box-shadow: none !important;
      padding: 20px 24px;
    }

    .accordion-button::after {
      filter: invert(1);
    }

    .accordion-body {
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.75;
      padding: 0 24px 22px 24px;
    }

    /* 更新日志卡 */
    .changelog-item {
      border-left: 2px solid rgba(0, 210, 255, 0.4);
      padding-left: 20px;
      position: relative;
      margin-bottom: 24px;
    }

    .changelog-item::before {
      content: '';
      position: absolute;
      left: -6px;
      top: 4px;
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--primary-glow);
    }

    /* 页脚 */
    footer {
      background: var(--bg-deep);
      border-top: 1px solid var(--glass-border);
      padding: 70px 0 30px;
      color: var(--text-muted);
      font-size: 0.9rem;
    }

    footer h5 {
      color: var(--text-main);
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 20px;
    }

    footer ul {
      list-style: none;
      padding: 0;
    }

    footer ul li {
      margin-bottom: 10px;
    }

    footer ul li a:hover {
      color: var(--primary-glow);
    }

    /* 移动端细微响应 */
    @media (max-width: 991px) {
      .hero-h1 {
        font-size: 2.1rem;
      }
      .tier-card.featured {
        transform: scale(1);
      }
      .floating-navbar {
        border-radius: 16px;
        padding: 10px 16px;
      }
    }