/* roulang page: index */
:root {
      --primary-gold: #D4A853;
      --primary-gold-hover: #C49A3C;
      --accent-red: #C92A2A;
      --accent-red-hover: #A82222;
      --bg-warm: #F5F3EE;
      --bg-dark: #1A1A1A;
      --text-dark: #1A1A1A;
      --text-mid: #5C5C5C;
      --text-light: #FFFFFF;
      --card-bg: #FFFFFF;
      --border-subtle: rgba(0,0,0,0.04);
      --shadow-sm: 0 2px 12px rgba(0,0,0,0.04);
      --shadow-lg: 0 8px 30px rgba(0,0,0,0.08);
      --radius-card: 20px;
      --radius-sm: 12px;
      --radius-btn: 8px;
      --font-title: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --font-mono: 'DIN Alternate', 'Roboto Mono', 'Courier New', monospace;
      --max-width: 1200px;
      --transition: all 0.25s ease;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-title);
      background-color: var(--bg-warm);
      color: var(--text-dark);
      line-height: 1.8;
      font-weight: 400;
      scroll-behavior: smooth;
      -webkit-font-smoothing: antialiased;
    }
    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
    }
    h1, h2, h3 {
      font-weight: 700;
      letter-spacing: -0.5px;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    img {
      max-width: 100%;
      display: block;
    }
    button, .btn {
      cursor: pointer;
      font-family: inherit;
      border: none;
      background: none;
    }

    /* 导航 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(255,255,255,0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      box-shadow: 0 1px 0 rgba(0,0,0,0.05);
      z-index: 1000;
      padding: 12px 0;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--primary-gold);
      letter-spacing: -0.5px;
    }
    .logo i {
      font-size: 2rem;
      color: var(--primary-gold);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-links a {
      font-weight: 500;
      color: var(--text-dark);
      position: relative;
      padding: 4px 0;
      transition: var(--transition);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 0;
      height: 2px;
      background: var(--primary-gold);
      transition: width 0.3s ease;
    }
    .nav-links a:hover {
      color: var(--primary-gold);
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .btn-nav-cta {
      background: var(--accent-red);
      color: white;
      padding: 10px 24px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      transition: var(--transition);
      margin-left: 16px;
      white-space: nowrap;
    }
    .btn-nav-cta:hover {
      background: var(--accent-red-hover);
    }
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 6px;
      cursor: pointer;
      background: transparent;
      border: none;
    }
    .hamburger span {
      width: 28px;
      height: 3px;
      background: var(--primary-gold);
      border-radius: 4px;
      transition: var(--transition);
    }

    /* 移动端菜单 */
    .mobile-menu {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100vh;
      background: rgba(26,26,26,0.97);
      backdrop-filter: blur(20px);
      z-index: 999;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 40px;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.3s ease;
    }
    .mobile-menu.active {
      display: flex;
      opacity: 1;
      pointer-events: auto;
    }
    .mobile-menu a {
      font-size: 1.8rem;
      color: white;
      font-weight: 600;
      transition: color 0.2s;
    }
    .mobile-menu a:hover {
      color: var(--primary-gold);
    }

    /* 区块通用 */
    section {
      padding: 100px 0;
    }
    @media (max-width: 768px) {
      section {
        padding: 70px 0;
      }
    }

    /* Hero */
    .hero {
      height: 100vh;
      min-height: 700px;
      background: var(--bg-dark);
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      position: relative;
      display: flex;
      align-items: center;
      color: white;
    }
    .hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 20% 30%, rgba(212,168,83,0.25) 0%, rgba(26,26,26,0.8) 70%);
    }
    .hero-content {
      position: relative;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 40px;
      width: 100%;
    }
    .hero-text {
      flex: 1 1 55%;
    }
    .hero-text h1 {
      font-size: 56px;
      font-weight: 900;
      color: var(--primary-gold);
      line-height: 1.2;
      margin-bottom: 20px;
    }
    .hero-text .subtitle {
      font-size: 20px;
      font-weight: 300;
      color: rgba(255,255,255,0.85);
      margin-bottom: 36px;
    }
    .hero-buttons {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
    }
    .btn-primary {
      background: var(--primary-gold);
      color: var(--text-dark);
      padding: 14px 36px;
      border-radius: var(--radius-btn);
      font-weight: 700;
      transition: var(--transition);
      display: inline-block;
    }
    .btn-primary:hover {
      background: var(--primary-gold-hover);
      transform: scale(1.03);
      box-shadow: 0 8px 20px rgba(0,0,0,0.2);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary-gold);
      color: var(--primary-gold);
      padding: 14px 36px;
      border-radius: var(--radius-btn);
      font-weight: 700;
      transition: var(--transition);
    }
    .btn-outline:hover {
      background: rgba(212,168,83,0.1);
    }
    .hero-stats {
      flex: 1 1 40%;
      display: flex;
      flex-wrap: wrap;
      gap: 24px;
      justify-content: flex-end;
    }
    .stat-badge {
      background: rgba(255,255,255,0.08);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(212,168,83,0.3);
      border-radius: 16px;
      padding: 20px 24px;
      text-align: center;
      min-width: 140px;
    }
    .stat-number {
      font-family: var(--font-mono);
      font-size: 2.4rem;
      font-weight: 700;
      color: var(--primary-gold);
    }
    .stat-label {
      color: rgba(255,255,255,0.7);
      font-size: 0.9rem;
    }

    /* 核心优势 1主2辅 */
    .advantages-grid {
      display: flex;
      gap: 30px;
      align-items: stretch;
      flex-wrap: wrap;
    }
    .adv-card {
      background: var(--card-bg);
      border-radius: var(--radius-card);
      padding: 32px;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-subtle);
      transition: var(--transition);
      flex: 1 1 280px;
    }
    .adv-card.main {
      flex: 1.2;
      border-top: 4px solid var(--primary-gold);
    }
    .adv-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }
    .adv-icon {
      font-size: 2.5rem;
      margin-bottom: 18px;
    }
    .adv-card.main .adv-icon { color: var(--primary-gold); }
    .adv-card:not(.main) .adv-icon { color: var(--text-dark); }
    .adv-data {
      font-family: var(--font-mono);
      font-size: 2rem;
      font-weight: 700;
      color: var(--primary-gold);
      margin-bottom: 8px;
    }
    .adv-title {
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .adv-desc {
      color: var(--text-mid);
    }

    /* 赛事数据深色区 */
    .dark-section {
      background: var(--bg-dark);
      color: white;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      margin: 40px 0;
    }
    .stat-item {
      text-align: center;
    }
    .big-number {
      font-family: var(--font-mono);
      font-size: 3rem;
      font-weight: 700;
      color: var(--primary-gold);
    }
    .match-cards {
      display: flex;
      gap: 24px;
      flex-wrap: wrap;
      margin-top: 40px;
    }
    .match-card {
      background: rgba(255,255,255,0.06);
      border-left: 4px solid var(--accent-red);
      padding: 20px;
      border-radius: 12px;
      flex: 1 1 250px;
    }

    /* 冠军之路阶梯 */
    .timeline-step {
      display: flex;
      flex-wrap: wrap;
      margin-bottom: 40px;
      position: relative;
    }
    .timeline-step:nth-child(odd) { justify-content: flex-start; }
    .timeline-step:nth-child(even) { justify-content: flex-end; }
    .step-card {
      background: white;
      border-radius: 20px;
      padding: 28px;
      width: 45%;
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .step-year {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary-gold);
    }

    /* 合作伙伴 */
    .partner-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 30px;
      justify-content: center;
    }
    .partner-logo {
      filter: grayscale(100%);
      opacity: 0.6;
      transition: var(--transition);
      width: 140px;
    }
    .partner-logo:hover {
      filter: grayscale(0%);
      opacity: 1;
      transform: scale(1.05);
    }

    /* FAQ */
    .faq-item {
      border-bottom: 1px solid rgba(0,0,0,0.08);
      padding: 18px 0;
    }
    .faq-question {
      font-weight: 700;
      display: flex;
      align-items: center;
      gap: 10px;
      cursor: pointer;
    }

    /* CTA */
    .cta-band {
      background: var(--accent-red);
      text-align: center;
      padding: 80px 20px;
    }
    .btn-white {
      background: white;
      color: var(--accent-red);
      padding: 16px 48px;
      font-weight: 700;
      border-radius: 40px;
      font-size: 1.2rem;
    }

    footer {
      background: var(--bg-dark);
      color: #aaa;
      padding: 50px 0 20px;
    }
    @media (max-width: 1024px) {
      .hero-text h1 { font-size: 42px; }
      .stats-grid { grid-template-columns: repeat(2,1fr); }
      .step-card { width: 100%; }
      .timeline-step:nth-child(even) { justify-content: flex-start; }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hamburger { display: flex; }
      .hero { height: auto; padding: 120px 0 60px; }
      .hero-content { flex-direction: column; }
      .hero-stats { justify-content: center; }
      .advantages-grid { flex-direction: column; }
    }