/* roulang page: index */
/* 全局设计变量与重置 */
    :root {
      --bg-deep: #0A0E27;
      --bg-card-glass: rgba(26, 31, 58, 0.55);
      --blur-glass: blur(16px);
      --border-glow: rgba(0, 240, 255, 0.25);
      --color-cyan: #00F0FF;
      --color-neon-pink: #FF3CAC;
      --color-steel: #B0C4DE;
      --color-white: #FFFFFF;
      --text-body: #B0C4DE;
      --text-heading: #FFFFFF;
      --radius-card: 20px;
      --radius-btn: 40px;
      --shadow-glow: 0 20px 40px rgba(0,0,0,0.5), 0 0 0 1px rgba(0,240,255,0.1) inset;
      --transition: all 0.25s ease;
      --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --font-mono: 'Inter', 'SF Mono', 'Roboto Mono', monospace;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
      background-color: var(--bg-deep);
    }
    body {
      font-family: var(--font-sans);
      background: radial-gradient(circle at 30% 10%, #0f1330 0%, #050816 90%);
      color: var(--text-body);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      position: relative;
      overflow-x: hidden;
    }
    /* 全局纹理网格 */
    body::before {
      content: "";
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: 
        linear-gradient(rgba(0,240,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,240,255,0.02) 1px, transparent 1px);
      background-size: 60px 60px;
      pointer-events: none;
      z-index: 0;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    button, .btn {
      cursor: pointer;
      font-family: inherit;
      border: none;
      background: none;
    }
    /* 容器与通用布局 */
    .container {
      width: 100%;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
      position: relative;
      z-index: 2;
    }
    section {
      position: relative;
      z-index: 2;
      padding: 80px 0;
    }
    @media (max-width: 768px) {
      section {
        padding: 60px 0;
      }
      .container {
        padding: 0 20px;
      }
    }
    /* 排版 */
    h1, h2, h3 {
      color: var(--text-heading);
      font-weight: 700;
    }
    h1 {
      font-weight: 800;
      font-size: clamp(2.8rem, 6vw, 4.5rem);
      letter-spacing: -0.02em;
      line-height: 1.2;
    }
    h2 {
      font-size: clamp(2rem, 4vw, 2.8rem);
      margin-bottom: 24px;
      letter-spacing: -0.01em;
    }
    h3 {
      font-weight: 600;
      font-size: 1.5rem;
      margin-bottom: 12px;
    }
    .text-cyan {
      color: var(--color-cyan);
    }
    .text-pink {
      color: var(--color-neon-pink);
    }
    /* 玻璃卡片 */
    .glass-card {
      background: var(--bg-card-glass);
      backdrop-filter: var(--blur-glass);
      -webkit-backdrop-filter: var(--blur-glass);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-glow);
      transition: var(--transition);
    }
    .glass-card:hover {
      border-color: var(--color-cyan);
      box-shadow: 0 25px 45px rgba(0,0,0,0.6), 0 0 0 1px rgba(0,240,255,0.2) inset, 0 0 18px rgba(0,240,255,0.2);
      transform: translateY(-2px);
    }
    /* 按钮系统 */
    .btn-primary {
      background: var(--color-cyan);
      color: #0A0E27;
      font-weight: 700;
      padding: 14px 36px;
      border-radius: var(--radius-btn);
      box-shadow: 0 0 20px rgba(0,240,255,0.6), 0 0 40px rgba(0,240,255,0.2);
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      letter-spacing: 0.5px;
      font-size: 1rem;
    }
    .btn-primary:hover {
      box-shadow: 0 0 30px rgba(0,240,255,0.9), 0 0 60px rgba(0,240,255,0.4), 0 0 0 4px rgba(255,60,172,0.3);
      transform: scale(1.02);
      color: #0A0E27;
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--color-cyan);
      color: var(--color-cyan);
      font-weight: 600;
      padding: 12px 32px;
      border-radius: var(--radius-btn);
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      backdrop-filter: blur(8px);
      letter-spacing: 0.5px;
    }
    .btn-outline:hover {
      background: rgba(0,240,255,0.08);
      border-color: #fff;
      color: #fff;
      box-shadow: 0 0 20px rgba(0,240,255,0.4);
    }
    /* 导航 PC 玻璃固定 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 72px;
      background: rgba(10, 14, 39, 0.7);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(0,240,255,0.18);
      z-index: 99;
      display: flex;
      align-items: center;
      transition: var(--transition);
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--color-cyan);
      font-weight: 700;
      font-size: 1.4rem;
      letter-spacing: 0.5px;
    }
    .logo svg {
      width: 32px;
      height: 32px;
      fill: var(--color-cyan);
    }
    .nav-links {
      display: flex;
      gap: 2.5rem;
    }
    .nav-links a {
      font-weight: 500;
      color: var(--color-steel);
      transition: color 0.2s;
      position: relative;
      padding: 4px 0;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--color-cyan);
      transition: width 0.25s ease;
    }
    .nav-links a:hover {
      color: var(--color-cyan);
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    /* 移动端底部胶囊导航 */
    .mobile-bottom-nav {
      display: none;
    }
    @media (max-width: 768px) {
      .navbar {
        display: none;
      }
      .mobile-bottom-nav {
        display: flex;
        position: fixed;
        bottom: 16px;
        left: 50%;
        transform: translateX(-50%);
        width: calc(100% - 32px);
        max-width: 500px;
        background: rgba(20, 24, 45, 0.8);
        backdrop-filter: blur(20px);
        border-radius: 40px;
        padding: 10px 20px;
        justify-content: space-around;
        align-items: center;
        z-index: 100;
        border: 1px solid rgba(0,240,255,0.2);
        box-shadow: 0 10px 25px rgba(0,0,0,0.7);
      }
      .mobile-nav-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        color: var(--color-steel);
        font-size: 0.7rem;
        transition: 0.2s;
        font-weight: 500;
      }
      .mobile-nav-item svg {
        width: 22px;
        height: 22px;
        margin-bottom: 2px;
      }
      .mobile-nav-item.active {
        color: var(--color-cyan);
        text-shadow: 0 0 12px var(--color-cyan);
      }
    }
    /* Hero区域 */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      padding-top: 80px;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      background-blend-mode: overlay;
      position: relative;
    }
    .hero-content {
      max-width: 700px;
    }
    .hero h1 span {
      color: var(--color-cyan);
    }
    .live-badge {
      background: rgba(255,60,172,0.15);
      border:1px solid var(--color-neon-pink);
      color: var(--color-neon-pink);
      padding: 6px 16px;
      border-radius: 30px;
      font-weight: 600;
      font-size: 0.9rem;
      display: inline-flex;
      align-items: center;
      gap:6px;
    }
    /* 实时数据面板 */
    .live-panel {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      margin: 30px 0;
    }
    .match-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: rgba(0,240,255,0.05);
      border-radius: 12px;
      padding: 10px 16px;
    }
    .score-mono {
      font-family: var(--font-mono);
      font-size: 1.6rem;
      font-weight: 700;
      color: #fff;
    }
    /* 网格卡片 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3,1fr);
      gap: 30px;
    }
    @media (max-width: 992px) {
      .grid-3 {
        grid-template-columns: repeat(2,1fr);
      }
    }
    @media (max-width: 600px) {
      .grid-3 {
        grid-template-columns: 1fr;
      }
    }
    .icon-wrap {
      width: 52px;
      height: 52px;
      background: rgba(0,240,255,0.1);
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--color-cyan);
      font-size: 26px;
    }
    /* FAQ手风琴 */
    .faq-item {
      border-bottom: 1px solid rgba(0,240,255,0.2);
      padding: 20px 0;
      cursor: pointer;
    }
    .faq-question {
      display: flex;
      justify-content: space-between;
      font-weight: 600;
      color: #fff;
      font-size: 1.1rem;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
      color: var(--color-steel);
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      margin-top: 12px;
    }
    footer {
      background: #030617;
      padding: 40px 0;
      text-align: center;
      color: var(--color-steel);
    }