/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    
    :root {
      --primary: #0B3D2E;
      --primary-light: rgba(11, 61, 46, 0.08);
      --accent: #F5A623;
      --accent-hover: #E8961A;
      --dark-bg: #1A1A2E;
      --warm-bg: #F5F5F0;
      --card-white: #FFFFFF;
      --text-main: #2D2D2D;
      --text-muted: #888888;
      --text-light: #CCCCCC;
      --border-light: rgba(0,0,0,0.04);
      --border-dark: rgba(255,255,255,0.06);
      --alert-red: #E94E3C;
      --radius-lg: 12px;
      --radius-md: 8px;
      --shadow-sm: 0 4px 20px rgba(0,0,0,0.04);
      --shadow-hover: 0 12px 32px rgba(0,0,0,0.08);
      --transition-smooth: 0.25s ease;
      --transition-quick: 0.2s ease;
      --font-heading: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      --font-number: "DIN Alternate", "PingFang SC", sans-serif;
    }

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

    body {
      font-family: var(--font-body);
      background-color: var(--warm-bg);
      color: var(--text-main);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      overflow-x: hidden;
    }

    h1, h2, h3, h4 {
      font-family: var(--font-heading);
      letter-spacing: -0.02em;
    }

    h1 {
      font-size: 48px;
      line-height: 1.2;
      font-weight: 800;
    }

    h2 {
      font-size: 36px;
      line-height: 1.3;
      font-weight: 700;
    }

    h3 {
      font-size: 24px;
      line-height: 1.4;
      font-weight: 600;
    }

    .number-font {
      font-family: var(--font-number);
      font-weight: 700;
    }

    .container-custom {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 导航栏分屏联动样式 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 64px;
      background: rgba(255,255,255,0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      box-shadow: 0 1px 0 rgba(0,0,0,0.05);
      z-index: 1000;
      display: flex;
      align-items: center;
      transition: background 0.3s ease, box-shadow 0.3s ease;
    }

    .navbar.scrolled {
      background: rgba(255,255,255,0.95);
      box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    }

    .nav-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .logo {
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 20px;
      color: var(--primary);
      display: flex;
      align-items: center;
      gap: 8px;
      text-decoration: none;
      white-space: nowrap;
    }

    .logo i {
      font-size: 24px;
      color: var(--accent);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
    }

    .nav-links a {
      font-size: 14px;
      color: var(--text-main);
      text-decoration: none;
      font-weight: 500;
      transition: color 0.2s ease;
      position: relative;
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--accent);
    }

    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent);
      border-radius: 1px;
    }

    .nav-cta {
      background: var(--accent);
      color: white;
      padding: 8px 20px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 14px;
      text-decoration: none;
      transition: all 0.2s ease;
      white-space: nowrap;
      height: 36px;
      display: flex;
      align-items: center;
    }

    .nav-cta:hover {
      background: var(--accent-hover);
      transform: translateY(-1px);
      box-shadow: 0 4px 12px rgba(245,166,35,0.3);
    }

    .hamburger {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--primary);
      cursor: pointer;
    }

    .mobile-menu {
      display: none;
      position: fixed;
      top: 64px;
      left: 0;
      width: 100%;
      height: calc(100vh - 64px);
      background: rgba(26,26,46,0.97);
      backdrop-filter: blur(10px);
      z-index: 999;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 32px;
    }

    .mobile-menu.open {
      display: flex;
    }

    .mobile-menu a {
      color: white;
      font-size: 20px;
      font-weight: 600;
      text-decoration: none;
    }

    /* 卡片与组件 */
    .card {
      background: var(--card-white);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-light);
      transition: all 0.25s ease;
      padding: 24px;
    }

    .card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    .dark-card {
      background: rgba(255,255,255,0.04);
      backdrop-filter: blur(5px);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 24px;
    }

    .btn-primary {
      background: var(--accent);
      color: white;
      font-weight: 600;
      padding: 14px 32px;
      border-radius: var(--radius-md);
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: all 0.2s ease;
      border: none;
      cursor: pointer;
      font-size: 16px;
    }

    .btn-primary:hover {
      background: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(245,166,35,0.35);
    }

    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary);
      color: var(--primary);
      font-weight: 600;
      padding: 12px 28px;
      border-radius: var(--radius-md);
      text-decoration: none;
      transition: all 0.2s ease;
      display: inline-flex;
      align-items: center;
    }

    .btn-outline:hover {
      background: var(--primary-light);
      border-color: var(--primary);
    }

    .btn-light {
      background: white;
      color: var(--primary);
      font-weight: 600;
      padding: 14px 32px;
      border-radius: var(--radius-md);
      text-decoration: none;
      transition: all 0.2s ease;
    }

    .btn-light:hover {
      background: #f0f0f0;
      transform: translateY(-2px);
    }

    /* FAQ 手风琴 */
    .faq-item {
      border-bottom: 1px solid #E5E5E0;
      margin-bottom: 4px;
    }

    .faq-question {
      width: 100%;
      background: rgba(0,0,0,0.02);
      border: none;
      padding: 20px 24px;
      text-align: left;
      font-weight: 700;
      font-size: 18px;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: background 0.2s;
      font-family: var(--font-heading);
    }

    .faq-question:hover {
      background: rgba(0,0,0,0.04);
    }

    .faq-question i {
      color: var(--accent);
      transition: transform 0.3s ease;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background: white;
      padding: 0 24px;
    }

    .faq-answer.open {
      max-height: 200px;
      padding: 16px 24px;
    }

    /* 动画 */
    .fade-in-up {
      opacity: 0;
      transform: translateY(20px);
      transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    }

    .fade-in-up.visible {
      opacity: 1;
      transform: translateY(0);
    }

    @media (max-width: 1024px) {
      h1 { font-size: 40px; }
      h2 { font-size: 32px; }
    }

    @media (max-width: 768px) {
      .nav-links { display: none; }
      .nav-cta { display: none; }
      .hamburger { display: block; }
      h1 { font-size: 34px; }
      h2 { font-size: 28px; }
      .container-custom { padding: 0 16px; }
      .card { padding: 20px; }
    }

    @media (max-width: 520px) {
      h1 { font-size: 28px; }
      h2 { font-size: 24px; }
    }