/* roulang page: index */
:root {
      --deep-blue: #0B1D3A;
      --electric-cyan: #00E5FF;
      --warm-gold: #D4AF37;
      --text-primary: #E0E8F0;
      --text-secondary: #8899AA;
      --border-light: rgba(255, 255, 255, 0.08);
      --glass-bg: rgba(255, 255, 255, 0.04);
      --glass-border: rgba(255, 255, 255, 0.08);
      --bs-primary: #00E5FF;
      --bs-body-bg: #0B1D3A;
      --bs-body-color: #E0E8F0;
      --bs-border-radius: 16px;
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
      --font-sans: 'PingFang SC', 'Microsoft YaHei', '苹方', '微软雅黑', 'Inter', system-ui, -apple-system, sans-serif;
    }

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

    body {
      font-family: var(--font-sans);
      background-color: var(--deep-blue);
      color: var(--text-primary);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }

    /* 容器微调 */
    .container {
      max-width: 1280px;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 链接基础重置 */
    a {
      color: var(--text-primary);
      text-decoration: none;
      transition: color 0.2s;
    }
    a:hover {
      color: var(--electric-cyan);
    }

    /* 导航分屏联动 */
    .navbar-custom {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 72px;
      display: flex;
      z-index: 1050;
      backdrop-filter: blur(12px);
      background: rgba(11, 29, 58, 0.8);
      border-bottom: 1px solid var(--border-light);
    }
    .nav-left {
      width: 40%;
      display: flex;
      align-items: center;
      padding-left: 32px;
      background: transparent;
    }
    .nav-right {
      width: 60%;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      position: relative;
      display: flex;
      align-items: center;
      justify-content: flex-end;
      padding-right: 32px;
    }
    .nav-right::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(11,29,58,0.7) 0%, rgba(11,29,58,0.3) 100%);
    }
    .logo-area {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 700;
      font-size: 24px;
      color: var(--electric-cyan);
      letter-spacing: 1px;
    }
    .logo-icon {
      width: 32px;
      height: 32px;
      border: 2px solid var(--warm-gold);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--warm-gold);
      font-weight: 700;
    }
    .nav-links {
      display: flex;
      gap: 28px;
      margin-left: 48px;
    }
    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-secondary);
      padding: 6px 0;
      border-bottom: 2px solid transparent;
      transition: all 0.2s;
    }
    .nav-links a.active,
    .nav-links a:hover {
      color: var(--electric-cyan);
      border-bottom-color: var(--electric-cyan);
      box-shadow: 0 2px 0 var(--electric-cyan);
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      color: var(--electric-cyan);
      font-size: 24px;
    }

    /* 移动端底部导航 */
    .mobile-bottom-nav {
      display: none;
    }

    /* Hero区域 */
    #hero {
      padding-top: 120px;
      display: flex;
      min-height: 100vh;
    }
    .hero-left {
      width: 40%;
      padding: 60px 32px 60px 32px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .hero-right {
      width: 60%;
      background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      position: relative;
      min-height: 600px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .hero-right::before {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 30% 30%, rgba(0,229,255,0.15) 0%, rgba(11,29,58,0.7) 90%);
    }
    .hero-right .glow-grid {
      position: absolute;
      width: 100%;
      height: 100%;
      background-image: linear-gradient(rgba(0,229,255,0.1) 1px, transparent 1px), linear-gradient(90deg, rgba(0,229,255,0.1) 1px, transparent 1px);
      background-size: 40px 40px;
      animation: drift 8s linear infinite;
    }
    @keyframes drift {
      0% { transform: translate(0,0); }
      100% { transform: translate(20px,20px); }
    }

    h1 {
      font-size: 48px;
      font-weight: 700;
      line-height: 1.2;
      margin-bottom: 24px;
      color: white;
    }
    .hero-sub {
      font-size: 18px;
      color: var(--text-secondary);
      margin-bottom: 32px;
    }
    .btn-glow {
      background: linear-gradient(135deg, #00E5FF 0%, #0B1D3A 100%);
      border: none;
      color: #0B1D3A;
      font-weight: 600;
      padding: 12px 32px;
      border-radius: 30px;
      box-shadow: 0 0 18px rgba(0,229,255,0.5);
      transition: all 0.3s;
      display: inline-block;
      text-align: center;
    }
    .btn-glow:hover {
      box-shadow: 0 0 28px rgba(0,229,255,0.8);
      transform: translateY(-2px);
      color: #0B1D3A;
    }
    .btn-ghost {
      background: transparent;
      border: 1px solid rgba(0,229,255,0.5);
      color: var(--electric-cyan);
      font-weight: 500;
      padding: 12px 32px;
      border-radius: 30px;
      transition: all 0.3s;
      margin-left: 16px;
    }
    .btn-ghost:hover {
      background: var(--electric-cyan);
      color: #0B1D3A;
    }

    /* 通用板块标题 */
    .section-title {
      font-size: 36px;
      font-weight: 700;
      margin-bottom: 16px;
      color: white;
    }
    .section-sub {
      color: var(--text-secondary);
      margin-bottom: 48px;
    }

    /* 玻璃卡片 */
    .glass-card {
      background: var(--glass-bg);
      backdrop-filter: blur(16px);
      border: 1px solid var(--glass-border);
      border-radius: 16px;
      padding: 24px;
      box-shadow: var(--shadow-card);
      transition: all 0.3s;
    }
    .glass-card:hover {
      border-color: var(--electric-cyan);
      box-shadow: 0 0 24px rgba(0,229,255,0.3);
      transform: translateY(-4px);
    }

    /* 指标数字 */
    .metric-number {
      font-size: 56px;
      font-weight: 800;
      color: var(--warm-gold);
      line-height: 1.1;
    }

    /* 服务非对称布局 */
    .service-main {
      background: var(--glass-bg);
      backdrop-filter: blur(16px);
      border-radius: 16px;
      padding: 40px;
      border: 1px solid var(--glass-border);
      height: 100%;
    }
    .service-grid-item {
      background: var(--glass-bg);
      backdrop-filter: blur(16px);
      border-radius: 16px;
      padding: 24px;
      border: 1px solid var(--glass-border);
      transition: all 0.3s;
    }
    .service-grid-item:hover {
      border-color: var(--electric-cyan);
      transform: translateY(-4px);
    }

    /* 对比卡片 */
    .compare-card {
      background: #102544;
      border-radius: 16px;
      padding: 32px;
      border: 1px solid rgba(255,255,255,0.05);
    }
    .progress-bar-custom {
      height: 8px;
      background: rgba(255,255,255,0.1);
      border-radius: 10px;
      overflow: hidden;
    }
    .progress-fill {
      height: 100%;
      background: var(--electric-cyan);
      width: 0%;
      transition: width 1s ease;
    }

    /* FAQ */
    .accordion-button {
      background: transparent;
      color: var(--text-primary);
      font-weight: 600;
      border: none;
      box-shadow: none;
    }
    .accordion-button:not(.collapsed) {
      background: rgba(0,229,255,0.05);
      color: var(--electric-cyan);
      border: 1px solid rgba(0,229,255,0.2);
      border-radius: 12px;
    }
    .accordion-item {
      background: transparent;
      border: 1px solid var(--border-light);
      margin-bottom: 12px;
      border-radius: 12px;
    }

    /* 表单 */
    .form-control {
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.15);
      color: white;
      border-radius: 12px;
      padding: 12px;
    }
    .form-control:focus {
      border-color: var(--electric-cyan);
      box-shadow: 0 0 10px rgba(0,229,255,0.4);
      background: rgba(0,0,0,0.3);
    }

    /* 页脚 */
    #site-footer {
      background: #060E1C;
      padding: 60px 0 30px;
    }

    @media (max-width: 768px) {
      .navbar-custom {
        flex-direction: column;
        height: auto;
      }
      .nav-left, .nav-right {
        width: 100%;
      }
      .nav-right {
        display: none;
      }
      .nav-links {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      #hero {
        flex-direction: column;
        padding-top: 100px;
      }
      .hero-left, .hero-right {
        width: 100%;
      }
      .hero-right {
        min-height: 300px;
      }
      .metric-number {
        font-size: 40px;
      }
      .btn-ghost {
        margin-left: 0;
        margin-top: 12px;
        display: block;
        width: fit-content;
      }
      .mobile-bottom-nav {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        background: rgba(11,29,58,0.95);
        backdrop-filter: blur(12px);
        border-top: 1px solid var(--border-light);
        justify-content: space-around;
        padding: 12px;
        z-index: 1060;
      }
      .mobile-bottom-nav a {
        color: var(--text-secondary);
        font-size: 12px;
        display: flex;
        flex-direction: column;
        align-items: center;
      }
    }