/* roulang page: index */
:root {
      --primary-bg: #0A0E17;
      --card-bg: #141A26;
      --card-bg-alt: #111827;
      --neon-green: #00E5A0;
      --neon-green-hover: #1AFFB3;
      --gold: #FFB800;
      --alert-red: #FF4455;
      --text-primary: #FFFFFF;
      --text-secondary: #B0B8C1;
      --text-muted: #6B7280;
      --border-subtle: rgba(0, 229, 160, 0.08);
      --border-active: rgba(0, 229, 160, 0.35);
      --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
      --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', system-ui, -apple-system, sans-serif;
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-tag: 6px;
      --shadow-glow: 0 0 30px rgba(0, 229, 160, 0.12);
      --transition-base: 0.25s ease;
    }

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

    body {
      font-family: var(--font-sans);
      background-color: var(--primary-bg);
      color: var(--text-secondary);
      line-height: 1.75;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 20px;
      width: 100%;
    }

    h1, h2, h3, h4 {
      color: var(--text-primary);
      font-weight: 700;
    }

    h1 {
      font-size: 56px;
      line-height: 1.15;
      letter-spacing: -1px;
      font-weight: 900;
    }

    h2 {
      font-size: 40px;
      line-height: 1.2;
      margin-bottom: 1rem;
    }

    h3 {
      font-size: 22px;
      line-height: 1.3;
      font-weight: 600;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: color var(--transition-base);
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      background: none;
    }

    /* 导航栏 */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      transition: background var(--transition-base), box-shadow var(--transition-base);
      height: 72px;
      display: flex;
      align-items: center;
    }

    .site-header.scrolled {
      background: rgba(10, 14, 23, 0.92);
      backdrop-filter: blur(12px);
      box-shadow: 0 1px 0 var(--border-subtle);
      border-bottom: 1px solid rgba(0,229,160,0.15);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 700;
      font-size: 1.4rem;
      color: #fff;
      letter-spacing: -0.5px;
    }

    .logo-icon {
      font-size: 1.8rem;
      color: var(--neon-green);
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 2rem;
    }

    .nav-link {
      color: #B0B8C1;
      font-weight: 500;
      font-size: 0.95rem;
      transition: color 0.2s;
      position: relative;
    }

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

    .btn-primary {
      background: var(--neon-green);
      color: #0A0E17;
      font-weight: 600;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      font-size: 0.95rem;
      transition: background 0.25s, transform 0.2s, box-shadow 0.25s;
      display: inline-block;
      text-align: center;
      letter-spacing: 0.3px;
    }

    .btn-primary:hover {
      background: var(--neon-green-hover);
      transform: scale(1.03);
      box-shadow: 0 0 24px rgba(0, 229, 160, 0.5);
      color: #0A0E17;
    }

    .btn-outline {
      border: 1.5px solid var(--neon-green);
      color: var(--neon-green);
      background: transparent;
      padding: 10px 26px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      transition: all 0.25s;
    }

    .btn-outline:hover {
      background: var(--neon-green);
      color: #0A0E17;
    }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
    }

    .hamburger span {
      width: 25px;
      height: 2px;
      background: #fff;
      transition: 0.3s;
    }

    /* 移动端导航抽屉 */
    .mobile-nav {
      position: fixed;
      top: 0;
      right: -100%;
      width: 75%;
      max-width: 320px;
      height: 100vh;
      background: #0A0E17;
      backdrop-filter: blur(20px);
      padding: 2rem;
      flex-direction: column;
      gap: 2rem;
      transition: right 0.3s ease;
      z-index: 2000;
      display: flex;
      border-left: 1px solid var(--border-subtle);
    }

    .mobile-nav.active {
      right: 0;
    }

    .mobile-nav a {
      font-size: 1.2rem;
      font-weight: 500;
      border-left: 3px solid transparent;
      padding-left: 12px;
    }

    .mobile-nav a:hover {
      border-left-color: var(--neon-green);
      color: var(--neon-green);
    }

    /* Hero */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      position: relative;
      overflow: hidden;
      background: radial-gradient(circle at 20% 30%, #0f1722, #0A0E17 80%);
    }

    .hero-bg-texture {
      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: 0.2;
      mix-blend-mode: overlay;
      pointer-events: none;
    }

    .particles {
      position: absolute;
      width: 100%;
      height: 100%;
      pointer-events: none;
    }

    .hero-grid {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 3rem;
      position: relative;
      z-index: 2;
      width: 100%;
    }

    .hero-left {
      flex: 1;
    }

    .hero-left h1 {
      margin-bottom: 1.5rem;
    }

    .hero-sub {
      font-size: 1.2rem;
      color: #B0B8C1;
      margin-bottom: 2rem;
      max-width: 500px;
    }

    .hero-actions {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
    }

    .hero-card {
      background: var(--card-bg);
      border-radius: 16px;
      padding: 24px;
      border: 1px solid rgba(0,229,160,0.2);
      box-shadow: 0 0 25px rgba(0,229,160,0.1);
      backdrop-filter: blur(4px);
      min-width: 300px;
    }

    .match-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin: 12px 0;
    }

    .team {
      display: flex;
      align-items: center;
      gap: 8px;
      color: #fff;
      font-weight: 600;
    }

    .score {
      font-family: var(--font-mono);
      font-size: 2.5rem;
      font-weight: 900;
      color: var(--neon-green);
    }

    .live-tag {
      background: var(--alert-red);
      color: white;
      padding: 2px 10px;
      border-radius: 20px;
      font-size: 0.7rem;
      font-weight: 700;
      animation: pulse 1.5s infinite;
      display: inline-block;
    }

    @keyframes pulse {
      0% { transform: scale(1); opacity: 1; }
      50% { transform: scale(1.08); opacity: 0.9; }
      100% { transform: scale(1); opacity: 1; }
    }

    section {
      padding: 100px 0;
    }

    .section-title {
      text-align: center;
      margin-bottom: 3rem;
    }

    .features-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .feature-card {
      background: var(--card-bg);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-card);
      padding: 32px;
      transition: all 0.3s;
    }

    .feature-card:hover {
      border-color: var(--border-active);
      box-shadow: var(--shadow-glow);
      transform: translateY(-4px);
    }

    .feature-icon {
      font-size: 2.5rem;
      color: var(--neon-green);
      margin-bottom: 1rem;
    }

    .live-scores-slider {
      display: flex;
      gap: 20px;
      overflow-x: auto;
      padding-bottom: 12px;
      scrollbar-width: none;
      -ms-overflow-style: none;
    }

    .live-scores-slider::-webkit-scrollbar {
      display: none;
    }

    .score-card {
      flex: 0 0 280px;
      background: var(--card-bg);
      border-radius: var(--radius-card);
      padding: 20px;
      border: 1px solid var(--border-subtle);
      transition: 0.25s;
    }

    .score-card:hover {
      border-color: var(--neon-green);
    }

    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      display: flex;
      background: var(--card-bg);
      border-radius: var(--radius-card);
      overflow: hidden;
      border: 1px solid var(--border-subtle);
    }

    .service-img {
      width: 45%;
      background-size: cover;
      background-position: center;
    }

    .service-info {
      padding: 24px;
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      text-align: center;
      gap: 2rem;
    }

    .stat-number {
      font-family: var(--font-mono);
      font-size: 3rem;
      font-weight: 900;
      color: var(--neon-green);
    }

    .faq-layout {
      display: flex;
      gap: 3rem;
    }

    .faq-left {
      flex: 1;
    }

    .faq-right {
      flex: 2;
    }

    .accordion-item {
      border-bottom: 1px solid rgba(255,255,255,0.1);
    }

    .accordion-title {
      padding: 18px 0;
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      cursor: pointer;
      color: #fff;
    }

    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
      color: #B0B8C1;
    }

    .cta-banner {
      background: #111827;
      text-align: center;
      padding: 80px 20px;
      border-radius: 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 2rem;
      padding: 60px 0;
    }

    @media (max-width: 1024px) {
      h1 { font-size: 42px; }
      .features-grid { grid-template-columns: repeat(2,1fr); }
      .services-grid { grid-template-columns: 1fr; }
      .faq-layout { flex-direction: column; }
    }

    @media (max-width: 768px) {
      .nav-menu { display: none; }
      .hamburger { display: flex; }
      .hero-grid { flex-direction: column; }
      .features-grid { grid-template-columns: 1fr; }
      .stats-grid { grid-template-columns: repeat(2,1fr); }
      .footer-grid { grid-template-columns: 1fr; }
      .service-card { flex-direction: column; }
      .service-img { width: 100%; height: 180px; }
    }