/* roulang page: index */
:root {
      --bg-base: #0B0F19;
      --bg-surface: #111827;
      --bg-card: rgba(17, 24, 39, 0.72);
      --primary-color: #00E5FF;
      --accent-color: #7928CA;
      --glow-color: rgba(0, 229, 255, 0.45);
      --glow-accent: rgba(121, 40, 202, 0.45);
      --text-main: #F9FAFB;
      --text-muted: #9CA3AF;
      --text-dim: #6B7280;
      --border-color: rgba(255, 255, 255, 0.08);
      --border-highlight: rgba(0, 225, 255, 0.35);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }

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

    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

    /* 顶部促销公告条 */
    .promo-bar {
      background: linear-gradient(90deg, #060911 0%, #151D2F 50%, #060911 100%);
      border-bottom: 1px solid rgba(0, 229, 255, 0.15);
      font-size: 0.85rem;
      padding: 7px 0;
      color: #D1D5DB;
    }
    .promo-tag {
      background: rgba(0, 229, 255, 0.15);
      color: var(--primary-color);
      border: 1px solid rgba(0, 229, 255, 0.3);
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 0.75rem;
      margin-right: 8px;
    }

    /* 主导航栏 */
    .main-nav {
      background: rgba(11, 15, 25, 0.85);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 1030;
      transition: all 0.3s ease;
    }
    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 1.35rem;
      letter-spacing: -0.5px;
      color: #FFFFFF;
    }
    .brand-logo i {
      color: var(--primary-color);
      font-size: 1.6rem;
      filter: drop-shadow(0 0 10px var(--primary-color));
    }
    .nav-link-custom {
      color: var(--text-muted);
      font-size: 0.95rem;
      font-weight: 500;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
    }
    .nav-link-custom:hover, .nav-link-custom.active {
      color: var(--primary-color);
      background: rgba(0, 229, 255, 0.06);
    }

    /* 导航搜索框 */
    .nav-search {
      position: relative;
      width: 200px;
    }
    .nav-search input {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-color);
      color: #FFF;
      border-radius: 20px;
      padding: 6px 14px 6px 34px;
      font-size: 0.85rem;
      width: 100%;
      outline: none;
    }
    .nav-search input:focus {
      border-color: var(--primary-color);
      box-shadow: 0 0 12px rgba(0, 229, 255, 0.25);
    }
    .nav-search i {
      position: absolute;
      left: 12px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-dim);
      font-size: 0.85rem;
    }

    /* 按钮规范 */
    .btn-neon {
      background: linear-gradient(135deg, var(--primary-color) 0%, #0099FF 100%);
      color: #050B14 !important;
      font-weight: 700;
      border: none;
      border-radius: var(--radius-md);
      padding: 10px 24px;
      box-shadow: 0 0 20px var(--glow-color);
      transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-neon:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 32px var(--glow-color), 0 0 10px #FFF;
      color: #02060D !important;
    }
    .btn-outline-neon {
      background: rgba(121, 40, 202, 0.1);
      border: 1px solid rgba(121, 40, 202, 0.6);
      color: #E9D5FF !important;
      font-weight: 600;
      border-radius: var(--radius-md);
      padding: 10px 24px;
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-outline-neon:hover {
      background: rgba(121, 40, 202, 0.25);
      border-color: #A855F7;
      box-shadow: 0 0 22px var(--glow-accent);
      transform: translateY(-2px);
    }

    /* 玻璃拟态卡片通用 */
    .glass-card {
      background: var(--bg-card);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
      transition: all 0.35s ease;
      position: relative;
      overflow: hidden;
    }
    .glass-card:hover {
      border-color: var(--border-highlight);
      box-shadow: 0 12px 40px rgba(0, 229, 255, 0.15);
      transform: translateY(-4px);
    }

    /* 通用板块外框与标题 */
    section {
      padding: 90px 0;
      position: relative;
    }
    .section-alt {
      background: rgba(17, 24, 39, 0.45);
      border-top: 1px solid rgba(255, 255, 255, 0.04);
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      background: rgba(0, 229, 255, 0.1);
      border: 1px solid rgba(0, 229, 255, 0.3);
      border-radius: 30px;
      color: var(--primary-color);
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 16px;
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      margin-bottom: 16px;
      background: linear-gradient(135deg, #FFFFFF 30%, #9CA3AF 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 1.05rem;
      max-width: 680px;
      margin: 0 auto;
      line-height: 1.7;
    }

    /* Hero 首屏 */
    #hero {
      position: relative;
      padding: 120px 0 100px;
      background: url('/assets/images/d7107cc8806ad5e2.png') no-repeat center center / cover;
      overflow: hidden;
    }
    .hero-mask {
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 50% 30%, rgba(11, 15, 25, 0.75) 0%, #0B0F19 95%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
    }
    .hero-h1 {
      font-size: 3.4rem;
      font-weight: 900;
      line-height: 1.2;
      margin-bottom: 24px;
      letter-spacing: -1px;
    }
    .hero-h1 span {
      background: linear-gradient(90deg, #00E5FF, #7928CA, #00E5FF);
      background-size: 200% auto;
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      animation: shine 4s linear infinite;
    }
    @keyframes shine {
      to { background-position: 200% center; }
    }
    .hero-p {
      color: #D1D5DB;
      font-size: 1.15rem;
      max-width: 780px;
      margin: 0 auto 36px;
      line-height: 1.8;
    }
    .hero-countdown {
      background: rgba(0, 0, 0, 0.6);
      border: 1px solid rgba(0, 229, 255, 0.3);
      border-radius: 40px;
      display: inline-flex;
      align-items: center;
      gap: 14px;
      padding: 8px 24px;
      margin-bottom: 30px;
      font-size: 0.95rem;
    }

    /* 热门精选大卡 */
    .game-hero-img {
      height: 220px;
      width: 100%;
      object-fit: cover;
      border-bottom: 1px solid var(--border-color);
      transition: transform 0.5s ease;
    }
    .glass-card:hover .game-hero-img {
      transform: scale(1.04);
    }

    /* 架构流程时间线 */
    .step-badge {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
      color: #000;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.2rem;
      box-shadow: 0 0 16px var(--glow-color);
      margin-bottom: 20px;
    }

    /* 运行指标条 */
    .metric-value {
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--primary-color);
      text-shadow: 0 0 20px var(--glow-color);
      line-height: 1.1;
    }

    /* FAQ 手风琴自定义 */
    .accordion-item {
      background: rgba(17, 24, 39, 0.7);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md) !important;
      margin-bottom: 14px;
      overflow: hidden;
    }
    .accordion-button {
      background: transparent;
      color: var(--text-main);
      font-weight: 600;
      font-size: 1.05rem;
      padding: 18px 24px;
      box-shadow: none !important;
    }
    .accordion-button:not(.collapsed) {
      background: rgba(0, 229, 255, 0.08);
      color: var(--primary-color);
      border-bottom: 1px solid rgba(0, 229, 255, 0.2);
    }
    .accordion-button::after {
      filter: invert(1);
    }
    .accordion-body {
      color: var(--text-muted);
      line-height: 1.7;
      padding: 20px 24px;
    }

    /* 底部收官 CTA */
    .download-box {
      background: linear-gradient(135deg, rgba(17, 24, 39, 0.95), rgba(26, 32, 60, 0.9)), url('/assets/images/cd86e19eb2002077.jpg') center/cover;
      border: 1px solid rgba(0, 229, 255, 0.35);
      border-radius: 28px;
      padding: 70px 40px;
      box-shadow: 0 0 60px rgba(0, 229, 255, 0.2);
      position: relative;
    }

    /* 页脚 */
    footer {
      background: #060911;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 30px;
      color: var(--text-dim);
      font-size: 0.9rem;
    }
    .footer-brand {
      color: #FFF;
      font-weight: 700;
      font-size: 1.25rem;
      margin-bottom: 14px;
      display: inline-block;
    }
    .footer-links a {
      color: var(--text-muted);
      display: inline-block;
      margin-right: 18px;
      margin-bottom: 8px;
    }
    .footer-links a:hover {
      color: var(--primary-color);
    }
    .compliance-box {
      background: rgba(255, 255, 255, 0.03);
      border: 1px dashed rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-sm);
      padding: 12px 20px;
      margin: 25px 0;
      font-size: 0.8rem;
      line-height: 1.6;
    }

    /* 抽屉导航 (移动端) */
    .offcanvas {
      background: #0B0F19;
      border-left: 1px solid var(--border-color);
    }

    @media (max-width: 991px) {
      .hero-h1 { font-size: 2.5rem; }
      .section-title { font-size: 1.85rem; }
      .nav-search { display: none; }
    }
    @media (max-width: 575px) {
      .hero-h1 { font-size: 2.1rem; }
      section { padding: 60px 0; }
      .download-box { padding: 40px 20px; }
      .btn-neon, .btn-outline-neon { width: 100%; justify-content: center; }
    }