/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    
    :root {
      --primary: #F04E23;
      --primary-dark: #D03D1A;
      --secondary: #2D1B3D;
      --bg-dark: #0F0F11;
      --card-bg: #1A1A1E;
      --light-bg: #F5F3F0;
      --text-white: #FFFFFF;
      --text-body: #D6D3D0;
      --text-muted: #8A7A6B;
      --accent-cyan: #00E5FF;
      --radius-card: 12px;
      --radius-btn: 8px;
      --shadow-card: 0 4px 24px rgba(240,78,35,0.08);
      --shadow-glow: 0 0 16px rgba(240,78,35,0.6);
      --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
      --font-number: "Inter", "SF Pro Display", system-ui;
    }
    
    * {
      box-sizing: border-box;
    }
    
    body {
      margin: 0;
      font-family: var(--font-sans);
      background-color: var(--bg-dark);
      color: var(--text-body);
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
    }
    
    img {
      max-width: 100%;
      display: block;
    }
    
    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.25s ease;
    }
    
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }
    
    /* 导航栏 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 50;
      background: rgba(15, 15, 17, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(240,78,35,0.15);
      padding: 12px 0;
      transition: background 0.3s;
    }
    
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }
    
    .logo {
      font-size: 24px;
      font-weight: 700;
      background: linear-gradient(135deg, #F04E23 0%, #FF8C42 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      letter-spacing: 1px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    
    .logo-icon {
      font-size: 28px;
      filter: drop-shadow(0 0 4px #F04E23);
    }
    
    .nav-links {
      display: flex;
      gap: 8px;
      align-items: center;
      flex-wrap: wrap;
    }
    
    .nav-chip {
      background: #1A1A1E;
      color: #D6D3D0;
      border-radius: 20px;
      padding: 8px 18px;
      font-size: 0.9rem;
      font-weight: 500;
      transition: all 0.25s;
      white-space: nowrap;
    }
    
    .nav-chip:hover {
      background: #2D2D32;
      color: #fff;
    }
    
    .nav-chip.active {
      background: #F04E23;
      color: #fff;
      box-shadow: 0 0 8px rgba(240,78,35,0.5);
    }
    
    .btn-primary {
      background: #F04E23;
      color: #fff;
      font-weight: 600;
      border-radius: 8px;
      padding: 12px 28px;
      display: inline-block;
      transition: all 0.25s;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(240,78,35,0.3);
    }
    
    .btn-primary:hover {
      background: #D03D1A;
      box-shadow: 0 0 16px rgba(240,78,35,0.7);
      transform: translateY(-1px);
    }
    
    .btn-outline {
      background: transparent;
      border: 2px solid #F04E23;
      color: #F04E23;
      font-weight: 600;
      border-radius: 8px;
      padding: 12px 28px;
      display: inline-block;
      transition: all 0.25s;
    }
    
    .btn-outline:hover {
      background: rgba(240,78,35,0.1);
      border-color: #FF8C42;
      color: #FF8C42;
    }
    
    .btn-white {
      background: #fff;
      color: #F04E23;
      font-weight: 700;
      border-radius: 8px;
      padding: 14px 32px;
      display: inline-block;
      transition: all 0.25s;
      box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    }
    
    .btn-white:hover {
      background: #fff;
      color: #2D1B3D;
      box-shadow: 0 0 20px rgba(255,255,255,0.5);
    }
    
    /* 汉堡菜单 */
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
    }
    .hamburger span {
      width: 25px;
      height: 3px;
      background: #F04E23;
      border-radius: 3px;
      transition: 0.3s;
    }
    
    .mobile-menu {
      display: none;
      position: fixed;
      top: 70px;
      left: 0;
      right: 0;
      bottom: 0;
      background: rgba(15,15,17,0.98);
      backdrop-filter: blur(20px);
      flex-direction: column;
      padding: 32px;
      gap: 20px;
      z-index: 40;
    }
    
    /* 区块通用 */
    section {
      padding: 120px 0;
      scroll-margin-top: 80px;
    }
    
    .section-title {
      font-size: 2.5rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
      position: relative;
      display: inline-block;
    }
    
    .section-title::after {
      content: '';
      position: absolute;
      bottom: -8px;
      left: 0;
      width: 60px;
      height: 4px;
      background: linear-gradient(90deg, #F04E23, transparent);
    }
    
    .text-center .section-title::after {
      left: 50%;
      transform: translateX(-50%);
    }
    
    .card {
      background: #1A1A1E;
      border-radius: 12px;
      padding: 32px;
      box-shadow: 0 4px 24px rgba(240,78,35,0.08);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }
    
    .card::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: linear-gradient(90deg, #F04E23, transparent);
    }
    
    .card:hover {
      transform: translateY(-6px);
      box-shadow: 0 12px 32px rgba(240,78,35,0.25);
    }
    
    /* 数据区块 */
    .stats-bg {
      background-color: #2D1B3D;
      background-image: radial-gradient(circle at 20% 30%, rgba(240,78,35,0.1) 0%, transparent 40%);
    }
    
    .stat-number {
      font-family: var(--font-number);
      font-size: 3rem;
      font-weight: 800;
      color: #F04E23;
    }
    
    /* FAQ */
    .faq-item {
      border-bottom: 1px solid #E0DCD5;
      padding: 16px 0;
      cursor: pointer;
    }
    .faq-question {
      font-weight: 600;
      color: #1A1A1E;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: 0.2s;
      border-left: 4px solid #F04E23;
      padding-left: 16px;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
      color: #3A3A3E;
      padding-left: 20px;
    }
    .faq-item.open .faq-answer {
      max-height: 200px;
      padding-top: 12px;
    }
    .arrow {
      transition: transform 0.3s;
    }
    .faq-item.open .arrow {
      transform: rotate(180deg);
    }
    
    /* 响应式 */
    @media (max-width: 1024px) {
      .nav-links { gap: 4px; }
      .nav-chip { padding: 6px 14px; font-size: 0.8rem; }
    }
    
    @media (max-width: 768px) {
      .nav-links, .nav-container .btn-primary {
        display: none;
      }
      .hamburger {
        display: flex;
      }
      .mobile-menu.active {
        display: flex;
      }
      section {
        padding: 80px 0;
      }
      .section-title {
        font-size: 2rem;
      }
      .hero-title {
        font-size: 2.5rem !important;
      }
      .grid-cols-3, .grid-cols-2 {
        grid-template-columns: 1fr !important;
      }
    }
    
    @media (min-width: 769px) {
      .mobile-menu {
        display: none !important;
      }
    }