/* roulang page: index */
:root {
      --primary-neon: #D41F5D;
      --accent-cyan: #00E5A0;
      --amber-gold: #F0A500;
      --bg-deep: #0D0F14;
      --bg-card: #1A1D26;
      --bg-card-alt: #1E2230;
      --text-white: #FFFFFF;
      --text-body: #B0B5C0;
      --text-muted: #6B7080;
      --border-glow: rgba(212, 31, 93, 0.25);
      --shadow-card: 0 4px 24px rgba(212, 31, 93, 0.15);
      --shadow-hover: 0 12px 40px rgba(212, 31, 93, 0.45);
      --radius-lg: 16px;
      --radius-chip: 20px;
      --font-number: 'DIN Alternate', 'Bebas Neue', 'Oswald', sans-serif;
      --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-body);
      background-color: var(--bg-deep);
      color: var(--text-body);
      line-height: 1.8;
      margin: 0;
      overflow-x: hidden;
    }

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

    a {
      text-decoration: none;
      color: var(--accent-cyan);
      transition: color 0.2s;
    }

    a:hover {
      color: var(--primary-neon);
    }

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

    .container-custom {
      max-width: 1320px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 导航栏 */
    .navbar-esports {
      background: rgba(13, 15, 20, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--primary-neon);
      padding: 12px 0;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1050;
      transition: all 0.3s ease;
    }

    .logo-text {
      font-size: 1.8rem;
      font-weight: 700;
      letter-spacing: 1px;
    }

    .logo-white {
      color: #fff;
    }

    .logo-cyan {
      color: var(--accent-cyan);
    }

    .nav-chips {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
    }

    .nav-chip {
      background: transparent;
      color: #B0B5C0;
      padding: 8px 18px;
      border-radius: var(--radius-chip);
      font-weight: 500;
      font-size: 0.95rem;
      transition: all 0.25s ease;
      white-space: nowrap;
    }

    .nav-chip:hover {
      background: rgba(212, 31, 93, 0.2);
      color: #fff;
    }

    .nav-chip.active {
      background: var(--primary-neon);
      color: white;
      box-shadow: 0 0 14px rgba(212, 31, 93, 0.6);
    }

    .btn-primary-glow {
      background: linear-gradient(135deg, #D41F5D, #C51162);
      border: none;
      color: white;
      font-weight: 700;
      padding: 12px 28px;
      border-radius: var(--radius-lg);
      transition: all 0.3s ease;
      box-shadow: 0 4px 14px rgba(212, 31, 93, 0.4);
      display: inline-block;
    }

    .btn-primary-glow:hover {
      filter: brightness(1.15);
      box-shadow: 0 0 24px rgba(212, 31, 93, 0.7);
      color: white;
    }

    .btn-outline-cyan {
      background: transparent;
      border: 2px solid var(--accent-cyan);
      color: var(--accent-cyan);
      font-weight: 600;
      padding: 12px 28px;
      border-radius: var(--radius-lg);
      transition: 0.3s;
    }

    .btn-outline-cyan:hover {
      background: rgba(0, 229, 160, 0.1);
      color: var(--accent-cyan);
      border-color: var(--accent-cyan);
    }

    .navbar-toggler {
      border: 1px solid var(--accent-cyan);
      padding: 4px 10px;
    }

    .navbar-toggler-icon {
      background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%2300E5A0' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }

    /* Hero */
    .hero-section {
      background: radial-gradient(circle at 30% 30%, #1f1235, #0D0F14);
      padding: 140px 0 80px;
      position: relative;
      overflow: hidden;
    }

    .hero-title {
      font-size: 3.2rem;
      font-weight: 700;
      letter-spacing: 2px;
      background: linear-gradient(90deg, #D41F5D, #F0A500);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      line-height: 1.2;
    }

    .hero-badge {
      background: rgba(212, 31, 93, 0.18);
      border-radius: 20px;
      padding: 8px 16px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.9rem;
      color: #ddd;
    }

    .hero-badge .number {
      font-family: var(--font-number);
      color: var(--accent-cyan);
      font-weight: 700;
      font-size: 1.4rem;
    }

    .hero-image {
      border-radius: 24px;
      border: 1px solid rgba(212, 31, 93, 0.5);
      box-shadow: 0 0 30px rgba(212, 31, 93, 0.5);
      width: 100%;
      height: auto;
      object-fit: cover;
    }

    /* 区块标题 */
    .section-title {
      font-size: 2.4rem;
      font-weight: 700;
      margin-bottom: 2rem;
      padding-left: 16px;
      border-left: 4px solid var(--accent-cyan);
    }

    /* 指标卡片 */
    .metric-card {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      padding: 28px 20px;
      border-top: 3px solid var(--accent-cyan);
      border: 1px solid var(--border-glow);
      transition: all 0.3s ease;
    }

    .metric-card:hover {
      border-color: var(--accent-cyan);
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }

    .metric-number {
      font-family: var(--font-number);
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--accent-cyan);
      text-shadow: 0 0 8px rgba(0,229,160,0.5);
    }

    /* 服务卡片 */
    .service-card {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      padding: 32px;
      border: 1px solid var(--border-glow);
      transition: all 0.3s ease;
      cursor: pointer;
      height: 100%;
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary-neon);
    }

    .service-icon {
      font-size: 2.8rem;
      color: var(--primary-neon);
    }

    /* 对比卡片 */
    .compare-card {
      background: #1A1D26;
      border-radius: 24px;
      padding: 32px;
      border: 1px solid #2B2F3A;
    }

    .compare-card.winner {
      border: 2px solid var(--accent-cyan);
      background: #1A2230;
      box-shadow: 0 0 30px rgba(0,229,160,0.2);
    }

    .vs-badge {
      background: linear-gradient(135deg, #D41F5D, #7B1FA2);
      width: 64px;
      height: 64px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: white;
      font-size: 1.6rem;
      margin: -20px auto 0;
    }

    /* FAQ */
    .accordion-button {
      background: #1A1D26;
      color: white;
      font-weight: 600;
      border-radius: 12px !important;
    }

    .accordion-button:not(.collapsed) {
      background: #252A35;
      color: white;
      border-left: 3px solid var(--accent-cyan);
    }

    .accordion-item {
      border: none;
      margin-bottom: 12px;
    }

    /* CTA */
    .cta-gradient {
      background: linear-gradient(135deg, #D41F5D 0%, #7B1FA2 100%);
      border-radius: 32px;
      padding: 60px 30px;
    }

    .form-control-dark {
      background: #0D0F14;
      border: 1px solid #4a4a5a;
      color: white;
      border-radius: 12px;
      padding: 14px 18px;
    }

    .form-control-dark:focus {
      border-color: var(--accent-cyan);
      box-shadow: 0 0 10px rgba(0,229,160,0.5);
    }

    .btn-amber {
      background: var(--amber-gold);
      border: none;
      color: #0D0F14;
      font-weight: 700;
      padding: 14px 36px;
      border-radius: 16px;
      transition: 0.3s;
    }

    .btn-amber:hover {
      background: #ffb81c;
    }

    footer {
      background: #090B10;
      border-top: 1px solid var(--primary-neon);
    }

    @media (max-width: 768px) {
      .hero-title {
        font-size: 2.2rem;
      }
      .nav-chips {
        flex-direction: column;
        align-items: flex-start;
      }
      .metric-number {
        font-size: 2rem;
      }
    }