/* roulang page: index */
/* :root 设计变量 —— 赢球网专业体育风格 */
    :root {
      --primary-deep-green: #0A5F38;
      --primary-dark-bg: #0A2E1F;
      --accent-gold: #D4A017;
      --accent-red: #C41E3A;
      --bg-soft: #F5F7F5;
      --card-bg: rgba(255, 255, 255, 0.78);
      --text-primary: #1A1A1A;
      --text-secondary: #4A5B4F;
      --text-light: #6B7B6F;
      --white: #FFFFFF;
      --light-border: rgba(255,255,255,0.5);
      --card-radius: 20px;
      --btn-radius: 12px;
      --shadow-card: 0 15px 35px rgba(10,95,56,0.08);
      --shadow-elevated: 0 20px 40px rgba(10,95,56,0.12);
      --glow-red: 0 0 22px rgba(196,30,58,0.45);
      --font-numbers: 'DIN Alternate', 'Inter', sans-serif;
      --transition: all 0.25s ease;
    }

    /* Reset & Base */
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
      background-color: var(--bg-soft);
      color: var(--text-primary);
      line-height: 1.5;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button, input {
      font-family: inherit;
      outline: none;
    }

    .container {
      max-width: 1260px;
      margin: 0 auto;
      padding: 0 32px;
    }

    /* 导航系统 - 沉浸式透明 + 滚动玻璃拟态 */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 100;
      backdrop-filter: blur(12px);
      background: rgba(255,255,255,0.7);
      border-bottom: 1px solid rgba(255,255,255,0.5);
      box-shadow: 0 8px 24px rgba(10,47,31,0.05);
      transition: background 0.3s, box-shadow 0.3s;
    }
    .site-header.scrolled {
      background: rgba(10,46,31,0.92);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(212,160,23,0.25);
      box-shadow: 0 8px 28px rgba(0,0,0,0.25);
      color: white;
    }
    .site-header.scrolled .nav-links a {
      color: rgba(255,255,255,0.9);
    }
    .site-header.scrolled .logo-text {
      color: white;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .logo-area {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      font-size: 26px;
      letter-spacing: -0.5px;
      color: var(--primary-deep-green);
      transition: color 0.2s;
    }
    .logo-icon {
      font-size: 32px;
      color: var(--accent-gold);
      filter: drop-shadow(0 0 8px rgba(212,160,23,0.5));
    }
    .logo-text {
      background: linear-gradient(135deg, #0A5F38 0%, #1c7a4a 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
      font-weight: 500;
      color: #2A3A2C;
    }
    .nav-links a {
      position: relative;
      padding: 8px 0;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent-gold);
      transition: width 0.2s;
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .btn-nav-cta {
      background: var(--accent-red);
      color: white !important;
      padding: 10px 22px;
      border-radius: 50px;
      font-weight: 600;
      box-shadow: var(--glow-red);
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .btn-nav-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 28px rgba(196,30,58,0.6);
    }

    /* 移动端底部导航 */
    .mobile-bottom-nav {
      display: none;
    }

    /* Hero 区域 */
    .hero-section {
      min-height: 100vh;
      display: flex;
      align-items: center;
      background: radial-gradient(circle at 30% 40%, #0A5F38 0%, #062B1A 90%);
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      background-blend-mode: overlay;
      position: relative;
      padding: 120px 0 80px;
      color: white;
    }
    .hero-grid {
      display: flex;
      gap: 45px;
      align-items: center;
    }
    .hero-left {
      flex: 1;
    }
    .hero-left h1 {
      font-size: 52px;
      line-height: 1.2;
      font-weight: 700;
      text-shadow: 0 6px 18px rgba(0,0,0,0.5);
      margin-bottom: 24px;
    }
    .hero-sub {
      font-size: 20px;
      color: rgba(255,255,255,0.85);
      margin-bottom: 36px;
      line-height: 1.6;
    }
    .hero-buttons {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }
    .btn-primary {
      background: var(--accent-red);
      color: white;
      font-weight: 700;
      padding: 14px 36px;
      border-radius: var(--btn-radius);
      box-shadow: var(--glow-red);
      border: none;
      letter-spacing: 0.3px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: 0.2s;
      cursor: pointer;
    }
    .btn-primary:hover {
      background: #dc3545;
      transform: translateY(-3px);
      box-shadow: 0 12px 30px rgba(196,30,58,0.5);
    }
    .btn-outline-gold {
      background: transparent;
      border: 2px solid var(--accent-gold);
      color: var(--accent-gold);
      padding: 14px 32px;
      border-radius: var(--btn-radius);
      font-weight: 600;
      transition: 0.2s;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .btn-outline-gold:hover {
      background: var(--accent-gold);
      color: #0A2E1F;
    }

    .hero-right-card {
      flex: 0.85;
      background: rgba(255,255,255,0.1);
      backdrop-filter: blur(24px);
      border-radius: 24px;
      padding: 28px;
      border: 1px solid rgba(255,255,255,0.25);
      box-shadow: 0 30px 45px rgba(0,0,0,0.4);
    }
    .live-score {
      font-family: var(--font-numbers);
      font-size: 36px;
      font-weight: 700;
    }

    /* 通用板块 */
    .section {
      padding: 90px 0;
    }
    .section-title {
      text-align: center;
      margin-bottom: 50px;
    }
    .section-title h2 {
      font-size: 30px;
      font-weight: 700;
      color: var(--primary-deep-green);
    }

    /* 服务卡片网格 */
    .cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: rgba(255,255,255,0.8);
      backdrop-filter: blur(10px);
      border-radius: 20px;
      padding: 32px 24px;
      border: 1px solid rgba(212,160,23,0.2);
      box-shadow: var(--shadow-card);
      transition: all 0.3s;
    }
    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 28px 40px rgba(10,95,56,0.18);
      border-color: var(--accent-gold);
    }
    .icon-gold {
      color: var(--accent-gold);
      font-size: 30px;
    }
    .service-card h3 {
      margin: 14px 0 10px;
    }
    
    /* 数据面板深色区 */
    .dark-panel {
      background: #0A2E1F;
      color: white;
      border-radius: 32px;
      padding: 48px 30px;
      background-image: url('/assets/images/backpic/back-3.webp');
      background-size: cover;
      background-blend-mode: soft-light;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      text-align: center;
      gap: 24px;
    }
    .stat-number {
      font-family: var(--font-numbers);
      font-size: 48px;
      color: var(--accent-gold);
    }

    /* 赛事卡片横向滚动调整 */
    .case-scroll {
      display: flex;
      gap: 24px;
      overflow-x: auto;
      padding-bottom: 12px;
    }
    .case-card {
      min-width: 280px;
      background: white;
      border-radius: 18px;
      overflow: hidden;
      box-shadow: var(--shadow-card);
    }

    /* FAQ 手风琴样式 */
    .faq-item {
      border-bottom: 1px solid #e0e8e0;
      padding: 20px 0;
    }
    .faq-question {
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
    }
    .faq-answer {
      margin-top: 12px;
      color: var(--text-secondary);
      display: none;
    }
    .faq-item.active .faq-answer {
      display: block;
    }

    footer {
      background: #0A2E1F;
      color: #E0E8E0;
      padding: 70px 0 30px;
    }

    @media (max-width: 1024px) {
      .cards-grid { grid-template-columns: repeat(2,1fr); }
      .stats-grid { grid-template-columns: repeat(2,1fr); }
    }
    @media (max-width: 768px) {
      .container { padding: 0 20px; }
      .hero-grid { flex-direction: column; }
      .hero-left h1 { font-size: 34px; }
      .cards-grid { grid-template-columns: 1fr; }
      .desktop-nav { display: none; }
      .mobile-bottom-nav {
        display: flex;
        position: fixed;
        bottom: 0; left:0; right:0;
        background: rgba(10,46,31,0.95);
        backdrop-filter: blur(20px);
        justify-content: space-around;
        padding: 10px;
        z-index: 99;
      }
    }