/* roulang page: index */
:root {
      --deep-blue: #0B1A2F;
      --darker-blue: #05101E;
      --electric-cyan: #00E5FF;
      --electric-cyan-dark: #0097A7;
      --competition-orange: #FF6B35;
      --glass-bg: rgba(255, 255, 255, 0.03);
      --glass-border: rgba(0, 229, 255, 0.15);
      --glass-border-hover: rgba(0, 229, 255, 0.4);
      --text-primary: #E0F7FA;
      --text-secondary: rgba(224, 247, 250, 0.6);
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
      --shadow-glow: 0 0 20px rgba(0, 229, 255, 0.5);
      --shadow-glow-hover: 0 0 30px rgba(0, 229, 255, 0.8);
      --radius-card: 16px;
      --radius-btn: 50px;
      --radius-input: 12px;
      --font-h1: 48px;
      --font-h2: 36px;
      --font-h3: 24px;
      --font-body: 16px;
      --transition: all 0.25s ease;
    }
    
    * {
      box-sizing: border-box;
    }
    
    body {
      font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
      background: linear-gradient(160deg, var(--deep-blue) 0%, var(--darker-blue) 100%);
      color: var(--text-primary);
      line-height: 1.8;
      margin: 0;
      padding: 0;
      overflow-x: hidden;
      position: relative;
    }
    
    /* 全局网格背景纹理 */
    body::before {
      content: "";
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: 
        linear-gradient(rgba(0, 229, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px);
      background-size: 40px 40px;
      pointer-events: none;
      z-index: 0;
    }
    
    .container, .container-lg, .container-fluid {
      position: relative;
      z-index: 2;
    }
    
    /* 导航栏 - 搜索主导 */
    .navbar-miles {
      background: rgba(11, 26, 47, 0.8);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--glass-border);
      height: 72px;
      display: flex;
      align-items: center;
      position: sticky;
      top: 0;
      z-index: 1000;
      padding: 0 24px;
    }
    
    .nav-brand {
      font-weight: 700;
      font-size: 28px;
      letter-spacing: 1px;
      color: #fff;
      text-decoration: none;
      display: flex;
      align-items: center;
      margin-right: auto;
      position: relative;
      font-style: italic;
      background: linear-gradient(135deg, #fff, var(--electric-cyan));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    
    .nav-brand::after {
      content: "";
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--electric-cyan);
      transform: scaleX(0);
      transition: transform 0.3s;
    }
    
    .nav-brand:hover::after {
      transform: scaleX(1);
    }
    
    .search-wrapper {
      flex: 1;
      max-width: 420px;
      margin: 0 30px;
      position: relative;
    }
    
    .search-input {
      width: 100%;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(0, 229, 255, 0.25);
      border-radius: 50px;
      padding: 12px 24px 12px 50px;
      color: #fff;
      font-size: 16px;
      backdrop-filter: blur(8px);
      transition: var(--transition);
    }
    
    .search-input::placeholder {
      color: rgba(224, 247, 250, 0.5);
      font-weight: 400;
    }
    
    .search-input:focus {
      outline: none;
      border-color: var(--electric-cyan);
      box-shadow: 0 0 18px rgba(0, 229, 255, 0.5);
      background: rgba(255, 255, 255, 0.08);
    }
    
    .search-icon {
      position: absolute;
      left: 20px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--electric-cyan);
      font-size: 18px;
    }
    
    .nav-links {
      display: flex;
      gap: 28px;
      align-items: center;
    }
    
    .nav-link-item {
      color: var(--text-secondary);
      text-decoration: none;
      font-weight: 500;
      font-size: 16px;
      transition: var(--transition);
      position: relative;
      padding: 4px 0;
    }
    
    .nav-link-item::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--electric-cyan);
      transform: scaleX(0);
      transition: transform 0.3s;
    }
    
    .nav-link-item:hover {
      color: var(--electric-cyan);
    }
    
    .nav-link-item:hover::after {
      transform: scaleX(1);
    }
    
    /* 按钮系统 */
    .btn-glow {
      background: linear-gradient(135deg, var(--electric-cyan), var(--electric-cyan-dark));
      border: none;
      color: var(--deep-blue);
      font-weight: 700;
      border-radius: var(--radius-btn);
      padding: 14px 36px;
      box-shadow: var(--shadow-glow);
      transition: var(--transition);
      letter-spacing: 0.5px;
      display: inline-block;
      text-decoration: none;
      text-align: center;
    }
    
    .btn-glow:hover {
      box-shadow: var(--shadow-glow-hover);
      transform: translateY(-2px);
      color: var(--deep-blue);
    }
    
    .btn-outline-orange {
      background: transparent;
      border: 1px solid var(--competition-orange);
      color: var(--competition-orange);
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 14px 36px;
      transition: var(--transition);
      text-decoration: none;
      display: inline-block;
      text-align: center;
    }
    
    .btn-outline-orange:hover {
      background: var(--competition-orange);
      color: #fff;
      box-shadow: 0 0 24px rgba(255, 107, 53, 0.6);
      transform: translateY(-2px);
    }
    
    .glass-card {
      background: var(--glass-bg);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      transition: var(--transition);
    }
    
    .glass-card:hover {
      border-color: var(--glass-border-hover);
      box-shadow: 0 12px 40px rgba(0, 229, 255, 0.2);
      background: rgba(255, 255, 255, 0.06);
    }
    
    .section-padding {
      padding: 100px 0;
    }
    
    h1, h2, h3, h4 {
      font-weight: 700;
      color: #fff;
    }
    
    .text-cyan {
      color: var(--electric-cyan);
    }
    
    .text-orange {
      color: var(--competition-orange);
    }
    
    /* Hero 区域 */
    .hero-left h1 {
      font-size: var(--font-h1);
      line-height: 1.3;
      margin-bottom: 24px;
    }
    
    .hero-subtitle {
      font-size: 18px;
      color: var(--text-secondary);
      margin-bottom: 32px;
    }
    
    .data-badge {
      display: flex;
      gap: 32px;
      margin-top: 40px;
    }
    
    .badge-item {
      font-weight: 600;
      color: var(--electric-cyan);
      background: rgba(0, 229, 255, 0.08);
      padding: 8px 20px;
      border-radius: 30px;
      font-size: 15px;
    }
    
    /* 亮点网格 */
    .highlight-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    
    .highlight-card {
      background: var(--glass-bg);
      backdrop-filter: blur(16px);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-card);
      padding: 32px 24px;
      transition: var(--transition);
    }
    
    .highlight-card i {
      font-size: 32px;
      color: var(--electric-cyan);
      margin-bottom: 20px;
    }
    
    /* 服务交替布局 */
    .service-row {
      display: flex;
      align-items: center;
      gap: 60px;
      margin-bottom: 80px;
    }
    
    .service-img {
      flex: 1;
      border-radius: var(--radius-card);
      overflow: hidden;
      position: relative;
    }
    
    .service-img img {
      width: 100%;
      height: auto;
      display: block;
      border-radius: var(--radius-card);
    }
    
    .service-text {
      flex: 1;
    }
    
    /* 案例瀑布流 */
    .masonry-grid {
      column-count: 3;
      column-gap: 24px;
    }
    
    .masonry-item {
      break-inside: avoid;
      margin-bottom: 24px;
      background: var(--glass-bg);
      backdrop-filter: blur(16px);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-card);
      overflow: hidden;
      transition: var(--transition);
    }
    
    .masonry-item:hover {
      transform: translateY(-8px);
      border-color: var(--electric-cyan);
      box-shadow: 0 16px 40px rgba(0, 229, 255, 0.25);
    }
    
    /* 对比表 */
    .compare-table {
      display: flex;
      gap: 24px;
      justify-content: center;
    }
    
    .compare-col {
      flex: 1;
      background: var(--glass-bg);
      backdrop-filter: blur(16px);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-card);
      padding: 32px;
    }
    
    .compare-col.recommended {
      border-left: 4px solid var(--competition-orange);
    }
    
    /* FAQ */
    .accordion-button {
      background: transparent;
      color: #fff;
      font-weight: 600;
      border: none;
      box-shadow: none;
      padding: 18px 0;
    }
    
    .accordion-item {
      background: transparent;
      border: none;
      border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    
    .accordion-button:not(.collapsed) {
      background: transparent;
      color: var(--electric-cyan);
    }
    
    /* CTA 横幅 */
    .cta-section {
      background: radial-gradient(circle at 20% 30%, rgba(0,229,255,0.15), transparent 70%);
    }
    
    /* 页脚 */
    .footer-link {
      color: var(--text-secondary);
      text-decoration: none;
      transition: var(--transition);
    }
    
    .footer-link:hover {
      color: var(--electric-cyan);
    }
    
    @media (max-width: 1024px) {
      .masonry-grid {
        column-count: 2;
      }
    }
    
    @media (max-width: 768px) {
      .navbar-miles {
        flex-wrap: wrap;
        height: auto;
        padding: 12px;
      }
      .search-wrapper {
        order: 3;
        max-width: 100%;
        margin: 12px 0 0;
        width: 100%;
      }
      .nav-links {
        gap: 16px;
      }
      .hero-left h1 {
        font-size: 36px;
      }
      .highlight-grid {
        grid-template-columns: 1fr;
      }
      .service-row {
        flex-direction: column;
        gap: 24px;
      }
      .masonry-grid {
        column-count: 1;
      }
      .compare-table {
        flex-direction: column;
      }
      .data-badge {
        flex-direction: column;
        gap: 12px;
      }
    }