/* roulang page: index */
:root {
      --primary-orange: #FF4D2E;
      --deep-purple: #1A0A2E;
      --bg-start: #0D0618;
      --bg-mid: #120822;
      --data-cyan: #00E5FF;
      --victory-gold: #FFB800;
      --white-alpha-10: rgba(255,255,255,0.1);
      --white-alpha-05: rgba(255,255,255,0.05);
      --white-alpha-20: rgba(255,255,255,0.2);
      --card-radius: 24px;
      --btn-radius: 40px;
      --font-sans: 'Red Hat Display', 'Noto Sans SC', '思源黑体', system-ui, -apple-system, 'Segoe UI', sans-serif;
      --transition: 0.25s ease-out;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-sans);
      background: radial-gradient(circle at 20% 10%, #1A0A2E, #0D0618 80%);
      color: #fff;
      line-height: 1.5;
      min-height: 100vh;
      -webkit-font-smoothing: antialiased;
      position: relative;
    }
    body::before {
      content: "";
      position: fixed;
      top:0;left:0;width:100%;height:100%;
      background-image: 
        linear-gradient(rgba(0, 229, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px);
      background-size: 40px 40px;
      pointer-events: none;
      z-index: 0;
    }
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 32px;
      position: relative;
      z-index: 2;
    }
    /* 导航 */
    .navbar {
      position: fixed;
      top:0;left:0;width:100%;
      padding: 16px 0;
      z-index: 50;
      transition: background 0.3s, backdrop-filter 0.3s;
      background: transparent;
      backdrop-filter: blur(0px);
    }
    .navbar.scrolled {
      background: rgba(13, 6, 24, 0.85);
      backdrop-filter: blur(20px);
      box-shadow: 0 8px 24px rgba(0,0,0,0.6);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 32px;
    }
    .logo {
      font-weight: 800;
      font-size: 1.8rem;
      letter-spacing: 1px;
      background: linear-gradient(135deg, #FFB800, #FF4D2E);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .logo i {
      background: none;
      -webkit-text-fill-color: #FF4D2E;
      font-size: 2rem;
    }
    .nav-links {
      display: flex;
      gap: 32px;
      align-items: center;
    }
    .nav-links a {
      color: #fff;
      text-decoration: none;
      font-weight: 600;
      font-size: 1rem;
      position: relative;
      padding: 4px 0;
      transition: color 0.2s;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left:0;
      width: 0;
      height: 2px;
      background: #FF4D2E;
      transition: width 0.2s;
    }
    .nav-links a:hover {
      color: #FFB800;
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .mobile-bottom-nav {
      display: none;
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      background: rgba(26, 10, 46, 0.9);
      backdrop-filter: blur(24px);
      border-radius: 60px;
      padding: 8px 24px;
      gap: 16px;
      z-index: 100;
      border: 1px solid rgba(255,255,255,0.15);
      box-shadow: 0 12px 32px rgba(0,0,0,0.7);
    }
    .mobile-bottom-nav a {
      color: #ddd;
      font-size: 0.9rem;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-decoration: none;
      font-weight: 500;
      padding: 6px 12px;
      border-radius: 30px;
      transition: 0.2s;
    }
    .mobile-bottom-nav a i {
      font-size: 1.2rem;
      margin-bottom: 2px;
    }
    .mobile-bottom-nav a.active {
      background: #FF4D2E;
      color: white;
      box-shadow: 0 0 20px #FF4D2E;
    }
    /* 按钮 */
    .btn-primary {
      background: linear-gradient(135deg, #FF4D2E, #ff6a4b);
      color: white;
      border: none;
      padding: 14px 32px;
      border-radius: 40px;
      font-weight: 700;
      font-size: 1rem;
      cursor: pointer;
      transition: 0.25s;
      box-shadow: 0 8px 20px rgba(255,77,46,0.4);
      text-decoration: none;
      display: inline-block;
      text-align: center;
    }
    .btn-primary:hover {
      filter: brightness(1.15);
      box-shadow: 0 0 24px #FF4D2E;
      transform: translateY(-2px);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid rgba(255,255,255,0.6);
      color: white;
      padding: 14px 32px;
      border-radius: 40px;
      font-weight: 600;
      cursor: pointer;
      transition: 0.2s;
      text-decoration: none;
      display: inline-block;
    }
    .btn-outline:hover {
      background: rgba(255,255,255,0.1);
      border-color: white;
    }
    .glass-card {
      background: rgba(255,255,255,0.05);
      backdrop-filter: blur(16px);
      border-radius: 24px;
      border: 1px solid rgba(255,255,255,0.08);
      box-shadow: 0 8px 32px rgba(0,0,0,0.5);
    }
    /* Hero */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      position: relative;
      overflow: hidden;
      padding-top: 80px;
    }
    .hero-bg-particles {
      position: absolute;
      inset:0;
      background: radial-gradient(circle at 30% 40%, #2a1040 0%, #0D0618 90%);
    }
    .data-particle {
      position: absolute;
      width: 4px;
      height: 4px;
      background: #00E5FF;
      border-radius: 50%;
      filter: blur(1px);
      animation: float 8s infinite alternate;
      opacity: 0.5;
    }
    @keyframes float {
      0% { transform: translateY(0px) scale(1);}
      100% { transform: translateY(-40px) scale(1.8); opacity: 0.8;}
    }
    .hero-content {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      width: 100%;
      gap: 40px;
    }
    .hero-left {
      flex: 1 1 500px;
    }
    .hero-left h1 {
      font-size: clamp(2.8rem, 6vw, 4.5rem);
      font-weight: 800;
      line-height: 1.2;
      background: linear-gradient(to right, #fff, #FFB800);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-sub {
      font-size: 1.3rem;
      margin: 24px 0;
      color: rgba(255,255,255,0.8);
    }
    .hero-right {
      flex: 0 0 360px;
      background: rgba(255,255,255,0.05);
      backdrop-filter: blur(20px);
      border-radius: 32px;
      padding: 32px;
      border: 1px solid rgba(255,255,255,0.1);
    }
    .live-match {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin: 20px 0;
    }
    .team-dot {
      width: 32px; height: 32px;
      border-radius: 50%;
      background: #FF4D2E;
    }
    .team-dot.blue { background: #00E5FF; }
    .score-number {
      font-size: 2.6rem;
      font-weight: 800;
      color: #00E5FF;
      font-family: 'Red Hat Display', sans-serif;
    }
    .badge-live {
      background: #FF4D2E;
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 0.8rem;
      font-weight: 700;
    }
    /* 板块标题 */
    .section-title {
      font-size: 2.4rem;
      font-weight: 700;
      margin-bottom: 48px;
      text-align: center;
    }
    /* 指标看板 */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(3,1fr);
      gap: 32px;
      margin: 60px 0;
    }
    .stat-card {
      text-align: center;
      padding: 40px 20px;
    }
    .big-number {
      font-size: 3.5rem;
      font-weight: 800;
      color: #00E5FF;
      font-family: 'Red Hat Display', sans-serif;
    }
    /* 服务矩阵 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3,1fr);
      gap: 32px;
      margin-top: 40px;
    }
    .service-card {
      padding: 36px 24px;
      transition: 0.2s;
    }
    .service-card:hover {
      transform: translateY(-8px);
      border-color: #FF4D2E;
    }
    /* 对比区 */
    .compare-wrapper {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 40px;
      flex-wrap: wrap;
    }
    .vs-badge {
      background: #FFB800;
      width: 80px; height: 80px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 2rem;
      color: #0D0618;
      animation: spin 4s infinite linear;
    }
    @keyframes spin { 100% { transform: rotate(360deg); } }
    /* FAQ */
    .faq-item {
      border-bottom: 1px solid rgba(255,255,255,0.1);
      padding: 22px 0;
    }
    .faq-question {
      font-weight: 700;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: 0.3s;
      color: #ccc;
      margin-top: 8px;
    }
    .faq-item.open .faq-answer {
      max-height: 200px;
    }
    /* 表单 */
    .cta-form {
      display: flex;
      gap: 16px;
      max-width: 600px;
      margin: 32px auto;
    }
    .cta-input {
      flex:1;
      background: transparent;
      border: 1px solid rgba(255,255,255,0.4);
      border-radius: 40px;
      padding: 16px 24px;
      color: white;
      font-size: 1rem;
    }
    .cta-input:focus {
      border-color: #00E5FF;
      box-shadow: 0 0 20px #00E5FF55;
      outline: none;
    }
    footer {
      background: #0A0414;
      padding: 60px 0 30px;
    }
    @media (max-width: 1024px) {
      .stats-grid, .services-grid { grid-template-columns: repeat(2,1fr); }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .mobile-bottom-nav { display: flex; }
      .hero-content { flex-direction: column; }
      .stats-grid, .services-grid { grid-template-columns: 1fr; }
      .compare-wrapper { flex-direction: column; }
      .cta-form { flex-direction: column; }
    }