/* roulang page: index */
:root {
      --primary-deep: #0B0F2D;
      --card-bg: #131842;
      --gold: #D4A843;
      --cyan: #00E5FF;
      --text-light: #E8ECF1;
      --text-muted: #8892B0;
      --border-dim: rgba(255,255,255,0.08);
      --border-hover: rgba(0,229,255,0.25);
      --glass-bg: rgba(255,255,255,0.03);
      --glass-border: rgba(255,255,255,0.08);
      --shadow-glow: 0 20px 40px rgba(0,0,0,0.5), 0 0 0 1px rgba(0,229,255,0.15);
      --button-glow: 0 0 20px rgba(0,229,255,0.4), 0 4px 12px rgba(0,0,0,0.3);
      --button-hover-glow: 0 0 35px rgba(0,229,255,0.7), 0 6px 18px rgba(0,0,0,0.4);
      --radius-card: 16px;
      --radius-btn: 12px;
      --radius-input: 8px;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", system-ui, -apple-system, sans-serif;
      --font-numbers: "Inter", "SF Pro Display", system-ui, sans-serif;
      --transition-smooth: all 0.3s cubic-bezier(0.2, 0.9, 0.4, 1);
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-sans);
      background: linear-gradient(145deg, #0A0C1A 0%, #0F1535 100%);
      color: var(--text-light);
      line-height: 1.75;
      margin: 0;
      overflow-x: hidden;
    }
    h1, h2, h3, h4 {
      font-weight: 600;
      letter-spacing: -0.01em;
    }
    a {
      text-decoration: none;
      transition: var(--transition-smooth);
      color: inherit;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container-custom {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 导航 */
    .navbar-custom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 68px;
      background: rgba(255,255,255,0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(0,0,0,0.06);
      padding: 0 32px;
      position: sticky;
      top: 0;
      z-index: 1020;
      width: 100%;
    }
    .logo-area {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .logo-icon {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--gold), var(--cyan));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 20px;
      color: #0B0F2D;
    }
    .logo-text {
      font-weight: 700;
      font-size: 18px;
      color: var(--primary-deep);
      letter-spacing: -0.3px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .nav-links a {
      color: #4A4F6A;
      font-weight: 500;
      font-size: 15.5px;
      position: relative;
      padding: 6px 0;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--cyan);
    }
    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--cyan);
    }
    .nav-right {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .search-box {
      background: rgba(0,0,0,0.04);
      border-radius: 40px;
      padding: 8px 16px;
      display: flex;
      align-items: center;
      gap: 6px;
      color: #6B7280;
      font-size: 14px;
    }
    .btn-cyan {
      background: linear-gradient(135deg, #00E5FF, #0077FF);
      border: none;
      padding: 10px 22px;
      border-radius: var(--radius-btn);
      color: white;
      font-weight: 600;
      box-shadow: var(--button-glow);
      transition: var(--transition-smooth);
      white-space: nowrap;
    }
    .btn-cyan:hover {
      box-shadow: var(--button-hover-glow);
      transform: scale(1.05);
      color: white;
    }
    .btn-outline-cyan {
      background: transparent;
      border: 1px solid rgba(0,229,255,0.5);
      color: var(--cyan);
      padding: 10px 24px;
      border-radius: var(--radius-btn);
      font-weight: 500;
      transition: var(--transition-smooth);
    }
    .btn-outline-cyan:hover {
      border-color: var(--cyan);
      background: rgba(0,229,255,0.08);
      color: var(--cyan);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: #0B0F2D;
    }
    @media (max-width: 991px) {
      .nav-links, .nav-right .search-box, .nav-right .btn-cyan {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .navbar-custom {
        padding: 0 20px;
      }
    }
    /* Hero */
    #hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      background-image: radial-gradient(circle at 20% 30%, rgba(0,229,255,0.08) 0%, transparent 50%);
      position: relative;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .hero-badge {
      display: inline-block;
      background: rgba(0,229,255,0.15);
      color: var(--cyan);
      border-radius: 30px;
      padding: 4px 16px;
      font-size: 13px;
      font-weight: 500;
      margin-bottom: 16px;
    }
    h1 {
      font-size: 52px;
      font-weight: 700;
      line-height: 1.15;
      color: white;
      margin-bottom: 16px;
    }
    .hero-sub {
      font-size: 18px;
      color: var(--text-muted);
      max-width: 480px;
      margin-bottom: 32px;
    }
    .button-group {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .hero-image {
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      border-radius: 32px;
      height: 400px;
      box-shadow: 0 30px 50px rgba(0,0,0,0.7);
      border: 1px solid rgba(255,255,255,0.05);
    }
    .scroll-indicator {
      position: absolute;
      bottom: 24px;
      left: 50%;
      transform: translateX(-50%);
      color: var(--cyan);
      font-size: 20px;
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0% { opacity: 0.4; transform: translateX(-50%) translateY(0); }
      50% { opacity: 1; transform: translateX(-50%) translateY(6px); }
      100% { opacity: 0.4; transform: translateX(-50%) translateY(0); }
    }
    @media (max-width: 992px) {
      .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
      }
      h1 {
        font-size: 38px;
      }
      .hero-sub {
        margin-left: auto;
        margin-right: auto;
      }
      .button-group {
        justify-content: center;
      }
      .hero-image {
        height: 300px;
        order: -1;
      }
    }
    /* 通用区块 */
    section {
      padding: 80px 0;
    }
    .section-title {
      font-size: 32px;
      font-weight: 600;
      margin-bottom: 12px;
      color: white;
    }
    .title-decor {
      width: 60px;
      height: 8px;
      background: var(--cyan);
      margin-bottom: 40px;
      border-radius: 4px;
    }
    /* 品牌信任带 */
    #trust {
      background: rgba(255,255,255,0.02);
      backdrop-filter: blur(8px);
      border-top: 1px solid var(--border-dim);
      border-bottom: 1px solid var(--border-dim);
    }
    .trust-logos {
      display: flex;
      justify-content: space-around;
      align-items: center;
      flex-wrap: wrap;
      gap: 32px;
      opacity: 0.7;
    }
    .trust-text {
      text-align: center;
      color: var(--text-muted);
      margin-top: 16px;
    }
    /* 玻璃卡片 */
    .glass-card {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      backdrop-filter: blur(20px);
      border-radius: var(--radius-card);
      padding: 28px;
      transition: var(--transition-smooth);
      height: 100%;
      box-shadow: 0 8px 20px rgba(0,0,0,0.3);
    }
    .glass-card:hover {
      transform: translateY(-8px);
      box-shadow: var(--shadow-glow);
      border-color: var(--border-hover);
    }
    .card-icon {
      font-size: 42px;
      color: var(--cyan);
      margin-bottom: 20px;
    }
    .card-title {
      font-size: 22px;
      font-weight: 600;
      margin-bottom: 12px;
      color: white;
    }
    .results-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .stat-number {
      font-family: var(--font-numbers);
      font-size: 48px;
      font-weight: 700;
      background: linear-gradient(135deg, #00E5FF, #A78BFA);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    @media (max-width: 768px) {
      .results-grid {
        grid-template-columns: 1fr 1fr;
      }
      h1 {
        font-size: 34px;
      }
    }
    .testimonial-card {
      max-width: 800px;
      margin: 0 auto;
      background: var(--glass-bg);
      backdrop-filter: blur(20px);
      border-radius: 24px;
      padding: 40px;
      border: 1px solid var(--glass-border);
    }
    .faq-item {
      background: transparent;
      border-bottom: 1px solid var(--border-dim);
    }
    .faq-button {
      background: transparent;
      color: white;
      font-weight: 500;
      padding: 18px 0;
      width: 100%;
      text-align: left;
      border: none;
      display: flex;
      justify-content: space-between;
    }
    .faq-button:hover {
      color: var(--cyan);
    }
    #cta {
      background: #0B0F2D;
      background-image: radial-gradient(circle at 50% 20%, rgba(0,229,255,0.1), transparent);
    }
    footer {
      background: #080B1A;
      padding: 48px 0 24px;
      color: var(--text-muted);
    }