/* roulang page: index */
:root {
      --primary-deep: #0A0E27;
      --primary-gradient-end: #1A1F3A;
      --accent-red: #FF4655;
      --accent-red-hover: #D93844;
      --accent-cyan: #00E5FF;
      --bg-light: #F4F6FC;
      --bg-white: #FFFFFF;
      --text-main: #1E2A3A;
      --text-muted: #5A6A7E;
      --text-on-dark: #FFFFFF;
      --border-light: #E1E6EF;
      --shadow-card: 0 4px 20px rgba(10,14,39,0.06);
      --shadow-card-hover: 0 12px 32px rgba(10,14,39,0.12);
      --radius-card: 16px;
      --radius-btn: 50px;
      --radius-input: 12px;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      --font-mono: "Inter", "Roboto", sans-serif;
      --transition-fast: 0.2s ease;
      --transition-smooth: 0.25s ease;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-sans);
      color: var(--text-main);
      background-color: var(--bg-light);
      margin: 0;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition-fast);
    }
    .container-custom {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    /* 导航 */
    .navbar-custom {
      background: rgba(255,255,255,0.98);
      backdrop-filter: blur(12px);
      box-shadow: 0 2px 12px rgba(0,0,0,0.04);
      height: 56px;
      padding: 0 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      position: fixed;
      top: 0;
      width: 100%;
      z-index: 1024;
      transition: height 0.25s ease, background 0.25s;
    }
    .navbar-custom.scrolled {
      height: 52px;
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(14px);
    }
    .brand-logo {
      font-weight: 800;
      font-size: 22px;
      color: var(--primary-deep);
      display: flex;
      align-items: center;
      gap: 6px;
      letter-spacing: -0.3px;
      white-space: nowrap;
    }
    .brand-logo .dot {
      width: 8px;
      height: 8px;
      background: var(--accent-red);
      border-radius: 50%;
      display: inline-block;
      margin-left: 2px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
    }
    .nav-links a {
      position: relative;
      padding: 4px 0;
      color: var(--text-muted);
      transition: color 0.2s;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary-deep);
    }
    .nav-links a::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 50%;
      width: 0;
      height: 2px;
      background: var(--accent-red);
      transition: width 0.25s ease, left 0.25s ease;
    }
    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
      left: 0;
    }
    .nav-right {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .search-icon {
      background: none;
      border: none;
      color: var(--text-muted);
      font-size: 18px;
      cursor: pointer;
    }
    .hot-tag {
      background: #F4F6FC;
      border-radius: 20px;
      padding: 4px 14px;
      font-size: 12px;
      font-weight: 500;
      color: var(--text-muted);
      transition: 0.2s;
      white-space: nowrap;
    }
    .hot-tag:hover {
      background: var(--accent-red);
      color: white;
    }
    .navbar-toggler {
      border: none;
      background: transparent;
      font-size: 24px;
      color: var(--primary-deep);
      display: none;
    }
    /* Hero */
    .hero-section {
      background: linear-gradient(135deg, #0A0E27 0%, #2D0A12 100%);
      padding: 120px 0 80px;
      position: relative;
      overflow: hidden;
      color: white;
    }
    .hero-glow {
      position: absolute;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(255,70,85,0.25) 0%, transparent 70%);
      top: -60px;
      right: 10%;
      filter: blur(60px);
    }
    .hero-glow-cyan {
      position: absolute;
      width: 280px;
      height: 280px;
      background: radial-gradient(circle, rgba(0,229,255,0.2) 0%, transparent 70%);
      bottom: -40px;
      left: 5%;
      filter: blur(60px);
    }
    .scoreboard-card {
      background: linear-gradient(145deg, #0A0E27, #1A1F3A);
      border-radius: 20px;
      padding: 28px 24px;
      color: white;
      box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    }
    .team-logo-placeholder {
      width: 48px;
      height: 48px;
      background: #2A2F4A;
      border-radius: 12px;
      object-fit: cover;
    }
    .score-big {
      font-family: var(--font-mono);
      font-size: 56px;
      font-weight: 800;
      color: var(--accent-cyan);
      text-shadow: 0 0 20px rgba(0,229,255,0.6);
      line-height: 1;
    }
    .progress-custom {
      height: 6px;
      background: rgba(255,255,255,0.15);
      border-radius: 10px;
      width: 100%;
    }
    .progress-fill {
      width: 68%;
      height: 6px;
      background: var(--accent-cyan);
      border-radius: 10px;
    }
    /* 按钮 */
    .btn-primary-custom {
      background: var(--accent-red);
      border: none;
      color: white;
      font-weight: 600;
      border-radius: 50px;
      padding: 14px 36px;
      font-size: 16px;
      transition: 0.2s;
      display: inline-block;
      text-align: center;
    }
    .btn-primary-custom:hover {
      background: #D93844;
      box-shadow: 0 8px 20px rgba(255,70,85,0.45);
      color: white;
      transform: translateY(-1px);
    }
    .btn-outline-light-custom {
      background: transparent;
      border: 2px solid white;
      color: white;
      border-radius: 50px;
      padding: 14px 36px;
      font-weight: 600;
      transition: 0.2s;
    }
    .btn-outline-light-custom:hover {
      background: white;
      color: var(--primary-deep);
    }
    /* 区块标题 */
    .section-title {
      font-size: 32px;
      font-weight: 700;
      margin-bottom: 48px;
      padding-left: 20px;
      border-left: 4px solid var(--accent-red);
      line-height: 1.3;
    }
    .card-custom {
      background: white;
      border-radius: var(--radius-card);
      padding: 32px;
      box-shadow: var(--shadow-card);
      transition: var(--transition-smooth);
      border: none;
      height: 100%;
    }
    .card-custom:hover {
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-4px);
    }
    .data-badge {
      background: rgba(0,229,255,0.08);
      border-radius: 50px;
      padding: 16px 24px;
      font-family: var(--font-mono);
      font-size: 32px;
      font-weight: 800;
      color: var(--accent-cyan);
      text-shadow: 0 0 12px rgba(0,229,255,0.4);
      display: inline-flex;
      align-items: baseline;
      gap: 8px;
    }
    .service-card {
      border-left: 3px solid var(--accent-cyan);
      transition: 0.25s;
    }
    .service-card:hover {
      border-left: 6px solid var(--accent-cyan);
    }
    .accordion-button:not(.collapsed) {
      background: #F4F6FC;
      border-left: 3px solid var(--accent-red);
      box-shadow: none;
      color: var(--primary-deep);
    }
    .accordion-button {
      border-radius: 12px;
      border: 1px solid var(--border-light);
      font-weight: 600;
    }
    .form-control-custom {
      border-radius: 12px;
      border: 1px solid var(--border-light);
      background: #F9FAFB;
      padding: 12px 16px;
    }
    .form-control-custom:focus {
      border-color: var(--accent-cyan);
      box-shadow: 0 0 0 3px rgba(0,229,255,0.15);
    }
    footer {
      background: #0A0E27;
      color: #8A9BB5;
    }
    @media (max-width: 992px) {
      .navbar-toggler {
        display: block;
      }
      .nav-links, .nav-right .hot-tag {
        display: none;
      }
      .mobile-menu {
        flex-direction: column;
        background: white;
        position: absolute;
        top: 56px;
        left: 0;
        width: 100%;
        padding: 20px;
        box-shadow: 0 12px 20px rgba(0,0,0,0.05);
      }
    }
    @media (max-width: 768px) {
      .section-title {
        font-size: 24px;
      }
      .hero-section {
        padding: 100px 0 60px;
      }
      h1 {
        font-size: 32px;
      }
      .score-big {
        font-size: 42px;
      }
    }
    @media (max-width: 576px) {
      .card-custom {
        padding: 24px;
      }
    }