/* roulang page: index */
:root {
      --primary: #E43D2A;
      --primary-dark: #C5301F;
      --secondary: #1A1D29;
      --bg: #F8F9FB;
      --accent: #00C48C;
      --text: #1A1D29;
      --text-light: #5A5F6E;
      --white: #FFFFFF;
      --border: #E9ECF0;
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-tag: 6px;
      --shadow-sm: 0 2px 12px rgba(26,29,41,0.06);
      --shadow-lg: 0 8px 24px rgba(26,29,41,0.12);
      --container: 1200px; 
      --spacing-section: 100px;
      --navbar-height: 72px;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
    }
    
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    
    body {
      font-family: var(--font-sans);
      font-size: 16px;
      line-height: 1.7;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
      transition: background 0.2s;
    }
    
    .container {
      max-width: var(--container);
      margin: 0 auto;
      padding: 0 2rem;
    }
    
    h1, h2, h3 {
      font-weight: 700;
      letter-spacing: -0.3px;
      line-height: 1.3;
    }
    
    h1 {
      font-size: 48px;
      letter-spacing: -0.5px;
      line-height: 1.2;
      color: var(--text);
    }
    h2 {
      font-size: 36px;
      margin-bottom: 1rem;
      color: var(--text);
    }
    h3 {
      font-size: 22px;
      font-weight: 600;
      color: var(--text);
    }
    
    p {
      margin-bottom: 1.25rem;
      color: var(--text-light);
    }
    
    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s;
    }
    
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    
    button, .btn {
      cursor: pointer;
      border: none;
      outline: none;
      font-family: inherit;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 15px;
    }
    
    .btn-primary {
      background: var(--primary);
      color: white;
      padding: 14px 28px;
      box-shadow: 0 4px 12px rgba(228,61,42,0.3);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      transform: scale(0.98);
      box-shadow: 0 6px 20px rgba(228,61,42,0.45);
    }
    
    .btn-outline {
      background: transparent;
      border: 1px solid var(--border);
      color: var(--text);
      padding: 14px 28px;
    }
    .btn-outline:hover {
      border-color: var(--primary);
      background: #FFF5F5;
      color: var(--primary);
    }
    
    /* 导航 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: var(--navbar-height);
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 2rem;
      z-index: 999;
      background: transparent;
      backdrop-filter: blur(0px);
      transition: background 0.25s, box-shadow 0.25s, backdrop-filter 0.25s;
    }
    .navbar.scrolled {
      background: rgba(255,255,255,0.95);
      backdrop-filter: blur(10px);
      box-shadow: 0 2px 12px rgba(0,0,0,0.04);
      border-bottom: 1px solid var(--border);
    }
    .logo {
      font-size: 24px;
      font-weight: 700;
      color: var(--primary);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .logo span {
      font-weight: 700;
      letter-spacing: -0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 2rem;
      list-style: none;
    }
    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text);
      padding: 0.5rem 0;
    }
    .nav-links a:hover {
      color: var(--primary);
    }
    .nav-cta {
      background: var(--primary);
      color: white !important;
      padding: 10px 22px !important;
      border-radius: var(--radius-btn);
    }
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
    }
    .hamburger span {
      width: 24px;
      height: 2.5px;
      background: var(--text);
      display: block;
      border-radius: 4px;
    }
    
    /* Hero */
    .hero {
      padding: calc(var(--navbar-height) + 3rem) 0 5rem;
      background-color: var(--bg);
      background-image: radial-gradient(circle at 20% 30%, rgba(228,61,42,0.03) 0%, transparent 40%);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }
    .hero-left h1 {
      margin-bottom: 1.5rem;
    }
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-top: 2rem;
    }
    .data-card {
      background: linear-gradient(145deg, #1E2130 0%, #141720 100%);
      border-radius: 20px;
      padding: 2rem;
      box-shadow: 0 24px 40px -16px rgba(0,0,0,0.4);
      border: 1px solid rgba(255,255,255,0.08);
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-blend-mode: overlay;
      opacity: 0.98;
    }
    .live-match {
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: white;
    }
    .team {
      font-weight: 600;
      font-size: 1.3rem;
    }
    .score {
      font-size: 44px;
      font-weight: 700;
      font-variant-numeric: tabular-nums;
      color: var(--accent);
      text-shadow: 0 0 12px rgba(0,196,140,0.7);
      letter-spacing: 2px;
    }
    .match-time {
      color: #B0B8C5;
      font-size: 14px;
      margin-top: 0.8rem;
    }
    
    /* 板块通用 */
    .section {
      padding: var(--spacing-section) 0;
    }
    .section-title {
      text-align: left;
      margin-bottom: 2.5rem;
    }
    .section-title h2 {
      display: inline-block;
    }
    
    /* 非对称服务卡片 */
    .services-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .service-left {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .service-card {
      background: white;
      padding: 28px;
      border-radius: var(--radius-card);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s;
    }
    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }
    .service-icon {
      font-size: 28px;
      color: var(--primary);
      margin-bottom: 16px;
    }
    .service-card h3 {
      font-size: 20px;
      margin-bottom: 0.5rem;
    }
    .dashed-link {
      border-bottom: 1px dashed var(--primary);
      display: inline-block;
      color: var(--primary);
      font-weight: 500;
      margin-top: 12px;
      transition: 0.2s;
    }
    .dashed-link:hover {
      border-bottom-style: solid;
    }
    
    /* 实时数据数字 */
    .stats-row {
      display: flex;
      flex-wrap: wrap;
      gap: 2rem;
      justify-content: space-between;
      background: white;
      padding: 32px 36px;
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-sm);
      margin-bottom: 3rem;
    }
    .stat-item {
      text-align: center;
      flex: 1;
       font-variant-numeric: tabular-nums;
    }
    .stat-number {
      font-size: 44px;
      font-weight: 700;
      color: var(--primary);
      line-height: 1.1;
    }
    .compare-row {
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      gap: 20px;
      align-items: center;
    }
    .compare-card {
      background: white;
      padding: 32px 24px;
      border-radius: var(--radius-card);
    }
    .vs-badge {
      background: var(--secondary);
      color: white;
      width: 48px;
      height: 48px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      font-weight: 700;
    }
    
    /* 时间轴 */
    .timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .step {
      text-align: center;
      padding: 2rem 1rem;
      background: white;
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    
    /* 案例 */
    .case-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
    }
    .case-card {
      background: #F0F2F5;
      border-left: 6px solid var(--primary);
      border-radius: var(--radius-card);
      padding: 26px;
    }
    
    /* FAQ */
    .faq-item {
      background: white;
      border: 1px solid var(--border);
      border-radius: var(--radius-btn);
      margin-bottom: 12px;
    }
    .faq-question {
      display: flex;
      justify-content: space-between;
      padding: 20px;
      font-weight: 600;
    }
    .faq-answer {
      padding: 0 20px 20px;
      color: var(--text-light);
      max-height: 0;
      overflow: hidden;
      transition: 0.3s;
    }
    .faq-item.open .faq-answer {
      max-height: 200px;
    }
    
    /* CTA深色 */
    .cta-dark {
      background: var(--secondary);
      border-radius: 24px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      padding: 3rem;
      color: white;
    }
    .cta-form input {
      padding: 14px;
      border-radius: var(--radius-btn);
      border: none;
      margin-right: 12px;
      width: 60%;
    }
    
    /* 页脚 */
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 3rem;
      background: var(--secondary);
      color: #B0B8C5;
      padding: 4rem 2rem;
      border-radius: 24px 24px 0 0;
    }
    
    /* 响应式 */
    @media (max-width: 992px) {
      h1 { font-size: 40px; } 
      .hero-grid, .services-grid, .compare-row, .timeline, .case-grid { grid-template-columns: 1fr; }
      .navbar .nav-links { display: none; }
      .hamburger { display: flex; }
      .stats-row { justify-content: center; }
    }
    @media (max-width: 576px) {
      h1 { font-size: 32px; } h2 { font-size: 26px; }
      .container { padding: 0 1.2rem; }
    }