/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    
    :root {
      --primary: #F04E23;
      --primary-foreground: #ffffff;
      --primary-dark: #D63E18;
      --secondary: #1E1E1E;
      --secondary-light: #2C2C2C;
      --accent: #FFC107;
      --accent-green: #00E676;
      --background: #F7F8FA;
      --surface: #FFFFFF;
      --text-primary: #1E1E1E;
      --text-secondary: #4A4A4A;
      --text-muted: #888888;
      --border: #E5E7EB;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --shadow-xs: 0 1px 3px rgba(0,0,0,0.04);
      --shadow-sm: 0 4px 20px rgba(0,0,0,0.04);
      --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
      --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', system-ui, -apple-system, sans-serif;
      --max-width: 1280px;
      --header-height: 72px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    body {
      margin: 0;
      font-family: var(--font-sans);
      font-size: 16px;
      font-weight: 400;
      line-height: 1.6;
      color: var(--text-primary);
      background-color: var(--background);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    .container {
      max-width: var(--max-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
      width: 100%;
    }

    @media (max-width: 768px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
    }

    /* 导航栏 */
    .navbar {
      position: sticky;
      top: 0;
      z-index: 50;
      background-color: rgba(255,255,255,0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      height: var(--header-height);
      display: flex;
      align-items: center;
      border-bottom: 1px solid var(--border);
      transition: box-shadow 0.2s ease;
    }

    .navbar.scrolled {
      box-shadow: 0 4px 20px rgba(0,0,0,0.04);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 20px;
      height: 100%;
    }

    .logo {
      font-size: 24px;
      font-weight: 800;
      color: var(--primary);
      display: flex;
      align-items: center;
      gap: 8px;
      text-decoration: none;
      letter-spacing: -0.5px;
      white-space: nowrap;
    }

    .logo-icon {
      width: 28px;
      height: 28px;
      background: var(--primary);
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-weight: 700;
      font-size: 18px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .nav-link {
      font-size: 16px;
      font-weight: 500;
      color: var(--text-secondary);
      text-decoration: none;
      transition: color 0.2s;
      white-space: nowrap;
    }

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

    .cta-btn {
      background-color: var(--primary);
      color: white;
      font-weight: 600;
      padding: 10px 24px;
      border-radius: var(--radius-sm);
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: all 0.2s ease;
      box-shadow: 0 2px 8px rgba(240,78,35,0.3);
      white-space: nowrap;
      letter-spacing: 0.3px;
    }

    .cta-btn:hover {
      background-color: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(240,78,35,0.4);
    }

    .hamburger {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    .hamburger span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-primary);
      margin: 5px 0;
      transition: 0.2s;
    }

    /* 首屏 */
    .hero {
      min-height: 85vh;
      display: flex;
      align-items: center;
      padding: 40px 0 80px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }

    .hero-badge {
      display: inline-block;
      background: rgba(240,78,35,0.08);
      color: var(--primary);
      font-weight: 600;
      font-size: 14px;
      padding: 6px 14px;
      border-radius: 20px;
      margin-bottom: 16px;
    }

    .hero-title {
      font-size: clamp(36px, 5vw, 52px);
      font-weight: 800;
      line-height: 1.15;
      color: var(--text-primary);
      margin: 0 0 20px;
    }

    .highlight {
      color: var(--primary);
      position: relative;
      display: inline-block;
    }

    .highlight::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 4px;
      width: 100%;
      height: 10px;
      background: rgba(255,193,7,0.5);
      z-index: -1;
      border-radius: 4px;
    }

    .hero-sub {
      font-size: 20px;
      color: var(--text-secondary);
      margin: 0 0 32px;
      line-height: 1.5;
    }

    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    .btn-outline {
      border: 2px solid var(--primary);
      color: var(--primary);
      background: transparent;
      font-weight: 600;
      padding: 10px 24px;
      border-radius: var(--radius-sm);
      text-decoration: none;
      transition: all 0.2s;
    }

    .btn-outline:hover {
      background: rgba(240,78,35,0.06);
    }

    .hero-image {
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      border-radius: 32px;
      height: 480px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.12);
      transform: rotate(1deg);
      transition: transform 0.3s;
    }

    /* 共通区块 */
    .section {
      padding: 90px 0;
    }

    .section-tag {
      font-size: 14px;
      font-weight: 600;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 8px;
    }

    .section-title {
      font-size: clamp(28px, 4vw, 36px);
      font-weight: 700;
      color: var(--text-primary);
      margin: 0 0 16px;
    }

    .section-desc {
      font-size: 18px;
      color: var(--text-secondary);
      max-width: 700px;
      margin-bottom: 48px;
    }

    /* 亮点栅格 */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }

    .feature-card {
      background: var(--surface);
      padding: 32px;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
      border: 1px solid transparent;
    }

    .feature-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
      border-color: rgba(240,78,35,0.15);
    }

    .feature-icon {
      font-size: 42px;
      margin-bottom: 20px;
      display: block;
    }

    .feature-title {
      font-size: 22px;
      font-weight: 700;
      margin: 0 0 12px;
      color: var(--text-primary);
    }

    /* 案例瀑布 */
    .cases-masonry {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .case-card {
      background: var(--surface);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s;
      display: flex;
      flex-direction: column;
    }

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

    .case-img {
      height: 200px;
      background-size: cover;
      background-position: center;
      transition: transform 0.4s;
    }

    .case-card:hover .case-img {
      transform: scale(1.03);
    }

    .case-body {
      padding: 20px 24px 24px;
    }

    .case-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      background: #FFF3E0;
      color: var(--primary);
      padding: 4px 10px;
      border-radius: 20px;
      margin-bottom: 8px;
    }

    /* 对比表 */
    .comparison-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .plan-card {
      background: var(--surface);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      box-shadow: var(--shadow-xs);
      border: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      transition: all 0.2s;
    }

    .plan-card.featured {
      border: 2px solid var(--primary);
      box-shadow: 0 12px 32px rgba(240,78,35,0.1);
      transform: scale(1.02);
    }

    .plan-tag {
      background: var(--primary);
      color: white;
      font-size: 12px;
      padding: 4px 12px;
      border-radius: 20px;
      align-self: flex-start;
      margin-bottom: 12px;
    }

    /* FAQ */
    .faq-list {
      max-width: 800px;
      margin: 0 auto;
      background: var(--surface);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    .faq-item {
      border-bottom: 1px solid var(--border);
    }

    .faq-question {
      width: 100%;
      background: none;
      border: none;
      padding: 20px 28px;
      font-size: 18px;
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      color: var(--text-primary);
    }

    .faq-answer {
      padding: 0 28px 20px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* 联系 */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      background: var(--surface);
      border-radius: var(--radius-lg);
      padding: 48px;
      box-shadow: var(--shadow-sm);
    }

    .footer {
      background: var(--secondary);
      color: #CCCCCC;
      padding: 40px 0;
      margin-top: auto;
    }

    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; gap: 40px; }
      .features-grid { grid-template-columns: repeat(2, 1fr); }
      .cases-masonry { grid-template-columns: repeat(2, 1fr); }
      .comparison-grid { grid-template-columns: repeat(2, 1fr); }
      .contact-grid { grid-template-columns: 1fr; }
      .hero-image { height: 360px; }
    }

    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hamburger { display: block; }
      .features-grid { grid-template-columns: 1fr; }
      .cases-masonry { grid-template-columns: 1fr; }
      .comparison-grid { grid-template-columns: 1fr; }
      .hero { min-height: auto; padding: 32px 0 60px; }
      .hero-title { font-size: 32px; }
      .section { padding: 60px 0; }
      .plan-card.featured { transform: none; }
    }