/* roulang page: index */
/* ----- CSS设计变量 ----- */
    :root {
      --primary-green: #0A8F3C;
      --accent-red: #E63946;
      --deep-black: #121212;
      --card-bg: rgba(26, 26, 26, 0.75);
      --muted-gray: #9CA3AF;
      --warm-yellow: #F4A261;
      --soft-white: #F8F9FA;
      --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
      --font-numbers: 'Montserrat', 'DIN Alternate', 'Arial Black', sans-serif;
      --container-max: 1280px;
      --radius-lg: 20px;
      --radius-md: 16px;
      --radius-pill: 50px;
      --shadow-glow: 0 8px 30px rgba(10, 143, 60, 0.25);
      --transition-base: all 0.2s ease;
    }

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

    body {
      font-family: var(--font-sans);
      background-color: var(--deep-black);
      color: #F2F2F2;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 导航看球吧风格 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      background: rgba(18, 18, 18, 0.72);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      transition: background 0.3s ease;
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.8rem;
      font-weight: 700;
      color: white;
      text-decoration: none;
      letter-spacing: 1px;
    }

    .logo i {
      background-color: var(--primary-green);
      color: white;
      border-radius: 50%;
      padding: 8px;
      font-size: 1.3rem;
    }

    .logo span {
      color: var(--primary-green);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 2rem;
      list-style: none;
    }

    .nav-links a {
      color: #ccc;
      text-decoration: none;
      font-weight: 500;
      font-size: 1rem;
      transition: color 0.2s;
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--accent-red);
    }

    .btn-nav {
      background: var(--accent-red);
      color: white !important;
      padding: 0.5rem 1.3rem;
      border-radius: var(--radius-pill);
      font-weight: 600;
      transition: background 0.2s;
    }

    .btn-nav:hover {
      background: #cf2a35;
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      color: white;
      font-size: 1.8rem;
      cursor: pointer;
    }

    /* 英雄区 */
    .hero {
      padding: 140px 0 100px;
      background: radial-gradient(circle at 30% 20%, rgba(10, 143, 60, 0.2) 0%, #121212 80%);
      position: relative;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      background-blend-mode: overlay;
    }

    .hero-grid {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 2.5rem;
    }

    .hero-content {
      flex: 1 1 45%;
    }

    .hero-visual {
      flex: 1 1 45%;
      display: flex;
      justify-content: center;
    }

    .hero h1 {
      font-size: 3.4rem;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 1.5rem;
    }

    .hero h1 .green {
      color: var(--primary-green);
    }

    .hero h1 .red {
      color: var(--accent-red);
    }

    .hero-sub {
      font-size: 1.25rem;
      color: #CCCCCC;
      margin-bottom: 2rem;
    }

    .badge-users {
      display: inline-flex;
      align-items: center;
      background: rgba(255,255,255,0.15);
      backdrop-filter: blur(10px);
      border-radius: 30px;
      padding: 0.3rem 1.2rem;
      font-weight: 600;
      margin-bottom: 1.5rem;
      border: 1px solid rgba(255,255,255,0.2);
    }

    .btn-group {
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
      margin-top: 0.8rem;
    }

    .btn-primary {
      background: var(--accent-red);
      color: white;
      font-weight: 700;
      padding: 0.9rem 2.2rem;
      border-radius: var(--radius-pill);
      text-decoration: none;
      box-shadow: 0 10px 20px rgba(230, 57, 70, 0.3);
      transition: 0.2s;
      display: inline-block;
    }

    .btn-primary:hover {
      background: #cc2e3a;
      transform: translateY(-2px);
    }

    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary-green);
      color: var(--primary-green);
      font-weight: 700;
      padding: 0.9rem 2.2rem;
      border-radius: var(--radius-pill);
      text-decoration: none;
      transition: 0.2s;
    }

    .btn-outline:hover {
      background: var(--primary-green);
      color: white;
    }

    .match-card {
      background: rgba(20,20,20,0.8);
      backdrop-filter: blur(16px);
      border-radius: 24px;
      padding: 1.5rem;
      border: 1px solid rgba(255,255,255,0.12);
      width: 100%;
      max-width: 400px;
    }

    .teams {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 12px;
    }

    .team {
      text-align: center;
    }

    .team img {
      width: 56px;
      height: 56px;
      object-fit: contain;
    }

    .score {
      font-size: 3.5rem;
      font-weight: 900;
      font-family: var(--font-numbers);
      color: white;
    }

    .live-badge {
      background: var(--accent-red);
      border-radius: 20px;
      padding: 0.2rem 1rem;
      font-size: 0.8rem;
      font-weight: bold;
      text-transform: uppercase;
    }

    /* 板块通用 */
    section {
      padding: 5rem 0;
    }

    .section-header {
      text-align: center;
      margin-bottom: 3.5rem;
    }
    .section-header h2 {
      font-size: 2.5rem;
      font-weight: 700;
      margin-bottom: 1rem;
    }

    /* 特点网格 2x3 */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .feature-item {
      background: rgba(255,255,255,0.03);
      backdrop-filter: blur(8px);
      padding: 2rem 1.5rem;
      border-radius: 24px;
      border: 1px solid rgba(255,255,255,0.06);
      transition: var(--transition-base);
    }

    .feature-item:hover {
      border-color: var(--primary-green);
      box-shadow: 0 10px 25px rgba(10,143,60,0.2);
    }

    .feature-icon {
      font-size: 2.4rem;
      color: var(--primary-green);
    }

    /* 赛事中心双栏 */
    .match-layout {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
    }
    .main-card {
      background: rgba(20,20,20,0.7);
      backdrop-filter: blur(12px);
      border-radius: 28px;
      padding: 2rem;
    }

    .side-list {
      background: rgba(30,30,30,0.7);
      backdrop-filter: blur(12px);
      border-radius: 24px;
      padding: 1rem;
    }

    /* 瀑布流社区 */
    .masonry {
      columns: 3;
      column-gap: 20px;
    }
    .masonry-card {
      break-inside: avoid;
      margin-bottom: 20px;
      background: rgba(40,40,40,0.6);
      backdrop-filter: blur(8px);
      border-radius: 24px;
      overflow: hidden;
      transition: transform 0.2s;
    }
    .masonry-card:hover {
      transform: translateY(-5px);
    }

    /* FAQ手风琴 */
    .accordion {
      background: #1e1e1e;
      border-radius: 20px;
    }
    .accordion-item {
      border-bottom: 1px solid #2a2a2a;
    }
    .accordion-btn {
      width: 100%;
      background: none;
      color: white;
      padding: 1.4rem;
      font-size: 1.1rem;
      text-align: left;
      border: none;
      display: flex;
      justify-content: space-between;
      cursor: pointer;
    }

    /* CTA 底部联系 */
    .cta-section {
      background: #0f0f0f;
      background-image: url('/assets/images/backpic/back-2.webp');
      background-size: cover;
      background-position: center;
      background-blend-mode: overlay;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.2fr;
      gap: 2rem;
    }

    @media (max-width: 1024px) {
      .features-grid { grid-template-columns: repeat(2,1fr); }
      .masonry { columns: 2; }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 72px;
        right: 20px;
        background: rgba(10,10,10,0.95);
        backdrop-filter: blur(20px);
        padding: 2rem;
        border-radius: 20px;
        width: 220px;
      }
      .nav-links.active {
        display: flex;
      }
      .menu-toggle { display: block;}
      .hero h1 { font-size: 2.4rem; }
      .features-grid { grid-template-columns: 1fr; }
      .match-layout { grid-template-columns: 1fr; }
      .masonry { columns: 1; }
      .footer-grid { grid-template-columns: 1fr; }
    }