/* roulang page: index */
:root {
      --primary: #E63946;
      --primary-dark: #C1121F;
      --secondary: #1D3557;
      --secondary-light: #2B4A6E;
      --accent: #F4A261;
      --accent-light: #F7B27A;
      --bg-light: #F8F9FA;
      --white: #FFFFFF;
      --gray-100: #F1F3F5;
      --gray-200: #E9ECEF;
      --gray-400: #6C757D;
      --gray-600: #495057;
      --border-light: rgba(0,0,0,0.05);
      --shadow-card: 0 4px 20px rgba(0,0,0,0.04);
      --shadow-hover: 0 12px 32px rgba(0,0,0,0.08);
      --shadow-nav: 0 4px 24px rgba(0,0,0,0.06);
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --radius-pill: 40px;
      --font-inter: 'Inter', -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
      --font-system: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-system);
      background-color: var(--bg-light);
      color: var(--secondary);
      line-height: 1.6;
      margin: 0;
      padding: 0;
      overflow-x: hidden;
    }

    h1, h2, h3, h4, .font-inter {
      font-family: var(--font-inter);
      letter-spacing: -0.3px;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 浮动导航 Dock */
    .floating-nav {
      position: fixed;
      top: 16px;
      left: 50%;
      transform: translateX(-50%);
      width: calc(100% - 32px);
      max-width: 960px;
      background: rgba(255,255,255,0.88);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-radius: var(--radius-pill);
      padding: 8px 24px;
      box-shadow: var(--shadow-nav);
      border: 1px solid var(--border-light);
      z-index: 1050;
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: background 0.2s, box-shadow 0.2s;
    }

    .floating-nav.scrolled {
      background: rgba(255,255,255,0.98);
      box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    }

    .nav-logo {
      font-family: var(--font-inter);
      font-weight: 700;
      font-size: 22px;
      color: var(--secondary);
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .nav-logo i {
      color: var(--primary);
      font-size: 26px;
    }

    .nav-links {
      display: flex;
      gap: 28px;
      align-items: center;
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .nav-links a {
      font-weight: 500;
      font-size: 15px;
      color: var(--secondary);
      transition: color 0.2s;
      white-space: nowrap;
    }

    .nav-links a:hover {
      color: var(--primary);
    }

    .nav-cta {
      background: var(--primary);
      color: white;
      border-radius: 30px;
      padding: 10px 22px;
      font-weight: 600;
      font-size: 15px;
      font-family: var(--font-inter);
      transition: background 0.2s, transform 0.2s;
      white-space: nowrap;
    }

    .nav-cta:hover {
      background: var(--primary-dark);
      color: white;
      transform: scale(1.02);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--secondary);
    }

    /* Hero */
    .hero {
      padding: 140px 0 80px;
      background: linear-gradient(135deg, #E63946 0%, #F4A261 100%);
      position: relative;
      overflow: hidden;
      min-height: 85vh;
      display: flex;
      align-items: center;
    }

    .hero::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" opacity="0.08"><circle cx="20" cy="20" r="2" fill="white"/><circle cx="80" cy="30" r="1.5" fill="white"/><circle cx="40" cy="80" r="2.5" fill="white"/></svg>');
      background-size: 200px;
      pointer-events: none;
    }

    .hero-content {
      position: relative;
      z-index: 2;
    }

    .hero h1 {
      font-size: 48px;
      font-weight: 700;
      line-height: 1.2;
      color: white;
      margin-bottom: 20px;
    }

    .hero .lead {
      font-size: 16px;
      color: rgba(255,255,255,0.9);
      max-width: 500px;
      margin-bottom: 30px;
    }

    .hero-buttons .btn-primary-custom {
      background: white;
      color: var(--primary);
      border-radius: 30px;
      padding: 14px 32px;
      font-weight: 600;
      border: none;
      transition: 0.2s;
    }

    .hero-buttons .btn-outline-custom {
      background: transparent;
      border: 2px solid white;
      color: white;
      border-radius: 30px;
      padding: 14px 32px;
      font-weight: 600;
      margin-left: 12px;
      transition: 0.2s;
    }

    .hero-buttons .btn-outline-custom:hover {
      background: white;
      color: var(--primary);
    }

    .hero-image-card {
      background: white;
      border-radius: 24px;
      overflow: hidden;
      box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    }

    .badge-row {
      display: flex;
      gap: 16px;
      margin-top: 28px;
      flex-wrap: wrap;
    }
    .stat-badge {
      background: rgba(255,255,255,0.2);
      backdrop-filter: blur(8px);
      border-radius: 20px;
      padding: 8px 18px;
      color: white;
      font-weight: 500;
      font-size: 14px;
    }

    /* 通用版块 */
    .section {
      padding: 80px 0;
    }

    .section-title {
      font-size: 36px;
      font-weight: 600;
      margin-bottom: 16px;
      color: var(--secondary);
    }

    .card-custom {
      background: white;
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      box-shadow: var(--shadow-card);
      transition: 0.3s ease;
      height: 100%;
      border: none;
    }

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

    .icon-circle {
      width: 56px;
      height: 56px;
      background: #FFF5F5;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--primary);
      font-size: 24px;
    }

    .service-card img {
      border-radius: var(--radius-md);
      height: 200px;
      object-fit: cover;
      width: 100%;
    }

    .btn-outline-dark-custom {
      border: 2px solid var(--secondary);
      color: var(--secondary);
      border-radius: 30px;
      padding: 10px 28px;
      font-weight: 600;
      background: transparent;
    }
    .btn-outline-dark-custom:hover {
      background: var(--secondary);
      color: white;
    }

    .accordion-custom .accordion-button {
      font-weight: 600;
      font-size: 18px;
      background: transparent;
      box-shadow: none;
      border-bottom: 1px solid var(--gray-200);
    }
    .accordion-custom .accordion-button:not(.collapsed) {
      background: #FFF5F5;
      border-left: 4px solid var(--primary);
    }

    .cta-banner {
      background: linear-gradient(90deg, #E63946, #F4A261);
      padding: 80px 0;
      text-align: center;
      color: white;
    }

    .footer {
      background: #1D3557;
      color: #F8F9FA;
      padding: 60px 0 30px;
    }
    .footer a:hover {
      color: #F4A261;
    }

    @media (max-width: 768px) {
      .nav-links { display: none; }
      .mobile-menu-btn { display: block; }
      .hero h1 { font-size: 36px; }
    }