/* roulang page: index */
:root {
      --primary: #E8380D;
      --primary-hover: #C92D0A;
      --secondary-dark: #1A1A2E;
      --accent-gold: #FFB800;
      --bg-light: #F5F5F7;
      --card-white: #FFFFFF;
      --text-main: #1A1A2E;
      --text-secondary: #5A5A6E;
      --text-on-dark: #FFFFFF;
      --success: #00C853;
      --warning: #FF1744;
      --border-light: rgba(26,26,46,0.08);
      --shadow-card: 0 8px 30px rgba(26,26,46,0.06);
      --shadow-hover: 0 16px 40px rgba(26,26,46,0.12);
      --radius-xl: 20px;
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --radius-pill: 100px;
      --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
      --font-mono: 'Roboto Mono', 'Courier New', monospace;
      --transition: all 0.25s ease;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }

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

    /* 导航 */
    .header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(12px);
      z-index: 1000;
      border-bottom: 1px solid var(--border-light);
      transition: var(--transition);
      height: 72px;
      display: flex;
      align-items: center;
    }
    .header.scrolled {
      box-shadow: 0 2px 18px rgba(0,0,0,0.04);
    }
    .nav {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      font-size: 1.5rem;
      color: var(--secondary-dark);
      text-decoration: none;
      letter-spacing: -0.3px;
    }
    .logo i {
      color: var(--primary);
      font-size: 1.8rem;
      filter: drop-shadow(0 2px 4px rgba(232,56,13,0.4));
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-links a {
      text-decoration: none;
      color: var(--text-secondary);
      font-weight: 500;
      font-size: 0.95rem;
      transition: var(--transition);
      padding: 6px 0;
      border-bottom: 2px solid transparent;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary);
      border-bottom-color: var(--primary);
    }
    .nav-cta {
      background: linear-gradient(135deg, var(--primary), var(--accent-gold));
      color: white !important;
      padding: 10px 22px !important;
      border-radius: var(--radius-sm);
      font-weight: 600;
      border-bottom: none !important;
      box-shadow: 0 4px 12px rgba(232,56,13,0.3);
      transition: var(--transition);
    }
    .nav-cta:hover {
      filter: brightness(1.08);
      box-shadow: 0 6px 18px rgba(232,56,13,0.4);
    }
    .hamburger {
      display: none;
      background: none;
      border: none;
      font-size: 2rem;
      color: var(--secondary-dark);
      cursor: pointer;
      transition: transform 0.3s;
    }
    .mobile-menu {
      position: fixed;
      top: 0;
      right: 0;
      width: 80%;
      max-width: 400px;
      height: 100vh;
      background: var(--secondary-dark);
      z-index: 2000;
      display: flex;
      flex-direction: column;
      padding: 30px;
      transform: translateX(100%);
      transition: transform 0.35s ease;
      box-shadow: -8px 0 30px rgba(0,0,0,0.4);
    }
    .mobile-menu.active {
      transform: translateX(0);
    }
    .mobile-close {
      align-self: flex-end;
      background: none;
      border: none;
      color: white;
      font-size: 2.2rem;
      cursor: pointer;
      margin-bottom: 35px;
    }
    .mobile-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .mobile-links a {
      color: white;
      font-size: 1.3rem;
      font-weight: 500;
      text-decoration: none;
      transition: 0.2s;
    }
    .mobile-links a:hover {
      color: var(--accent-gold);
    }

    /* Hero */
    .hero {
      padding: 150px 0 100px;
      background: linear-gradient(135deg, var(--secondary-dark) 0%, #2D1A1A 70%, var(--primary) 100%);
      position: relative;
      overflow: hidden;
      color: white;
    }
    .hero::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.16;
      mix-blend-mode: overlay;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
      position: relative;
      z-index: 2;
    }
    .hero-content h1 {
      font-size: 3.2rem;
      font-weight: 700;
      line-height: 1.2;
      margin-bottom: 22px;
      letter-spacing: -0.5px;
      text-shadow: 0 4px 12px rgba(0,0,0,0.3);
    }
    .hero-sub {
      font-size: 1.2rem;
      color: rgba(255,255,255,0.8);
      margin-bottom: 36px;
    }
    .btn-group {
      display: flex;
      gap: 18px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--accent-gold));
      color: white;
      padding: 15px 36px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 1.1rem;
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border: none;
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 8px 20px rgba(232,56,13,0.4);
    }
    .btn-primary:hover {
      filter: brightness(1.1);
      transform: translateY(-2px);
      box-shadow: 0 14px 28px rgba(232,56,13,0.5);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid rgba(255,255,255,0.6);
      color: white;
      padding: 15px 32px;
      border-radius: var(--radius-md);
      font-weight: 600;
      text-decoration: none;
      transition: var(--transition);
    }
    .btn-outline:hover {
      background: rgba(255,255,255,0.1);
      border-color: white;
    }
    .score-demo {
      background: rgba(20,20,40,0.8);
      backdrop-filter: blur(18px);
      border-radius: var(--radius-lg);
      padding: 30px;
      border: 1px solid rgba(255,255,255,0.15);
      box-shadow: 0 25px 40px -15px black;
    }
    .match-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
      border-bottom: 1px solid rgba(255,255,255,0.1);
      padding-bottom: 16px;
    }
    .team {
      font-weight: 600;
      font-size: 1.1rem;
    }
    .live-badge {
      background: var(--warning);
      color: white;
      padding: 2px 12px;
      border-radius: 20px;
      font-size: 0.7rem;
      font-weight: 700;
      margin-left: 8px;
    }
    .score {
      font-family: var(--font-mono);
      font-size: 2.3rem;
      font-weight: 700;
      color: var(--accent-gold);
      text-shadow: 0 0 10px rgba(255,184,0,0.6);
    }

    /* 板块通用 */
    .section {
      padding: 100px 0;
    }
    .section-title {
      text-align: center;
      margin-bottom: 60px;
    }
    .section-title h2 {
      font-size: 2.5rem;
      font-weight: 700;
      color: var(--secondary-dark);
    }
    .section-title p {
      color: var(--text-secondary);
      font-size: 1.1rem;
      margin-top: 12px;
    }

    /* 痛点卡片 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .pain-card {
      background: var(--card-white);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      border-left: 6px solid var(--primary);
      box-shadow: var(--shadow-card);
      transition: var(--transition);
    }
    .pain-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .pain-icon {
      color: var(--primary);
      font-size: 2rem;
      margin-bottom: 18px;
    }
    .stat-badge {
      background: #FFF2EF;
      color: var(--primary);
      font-weight: 700;
      padding: 5px 14px;
      border-radius: 30px;
      display: inline-block;
      margin-top: 15px;
      font-size: 0.9rem;
    }

    /* 解决方案卡片 */
    .solution-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .solution-card {
      background: var(--card-white);
      border-radius: var(--radius-xl);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: var(--transition);
    }
    .solution-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-8px);
    }
    .card-img {
      height: 180px;
      background-size: cover;
      background-position: center;
    }
    .card-body {
      padding: 28px;
    }
    .badge-gold {
      background: linear-gradient(135deg, var(--accent-gold), #E8A800);
      color: #1A1A2E;
      font-weight: 700;
      padding: 6px 16px;
      border-radius: 40px;
      font-size: 0.85rem;
      display: inline-block;
      margin-bottom: 16px;
    }

    /* 实时模拟区 */
    .dark-section {
      background: var(--secondary-dark);
      color: white;
      padding: 100px 0;
      position: relative;
    }
    .live-scores {
      display: flex;
      gap: 24px;
      justify-content: center;
      flex-wrap: wrap;
      margin: 40px 0;
    }
    .score-card {
      background: rgba(255,255,255,0.06);
      backdrop-filter: blur(14px);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: var(--radius-lg);
      padding: 28px 30px;
      min-width: 180px;
    }

    /* FAQ */
    .faq-item {
      background: white;
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      box-shadow: var(--shadow-card);
      border-left: 5px solid var(--primary);
    }
    .faq-question {
      padding: 24px 30px;
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      cursor: pointer;
    }
    .faq-answer {
      padding: 0 30px 24px;
      color: var(--text-secondary);
      display: none;
    }
    .faq-item.open .faq-answer {
      display: block;
    }

    /* CTA */
    .cta-section {
      background: var(--secondary-dark);
      position: relative;
      overflow: hidden;
    }
    .cta-glow {
      position: absolute;
      width: 500px;
      height: 500px;
      background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
      top: -100px;
      left: -100px;
      opacity: 0.3;
    }

    /* 页脚 */
    .footer {
      background: #0F0F1A;
      color: #9A9AAE;
      padding: 60px 0 25px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
    }

    @media (max-width: 1024px) {
      .nav-links { display: none; }
      .hamburger { display: block; }
      .hero-grid { grid-template-columns: 1fr; }
      .pain-grid, .solution-grid { grid-template-columns: 1fr 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 640px) {
      .pain-grid, .solution-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .hero-content h1 { font-size: 2.4rem; }
    }