/* roulang page: index */
:root {
      --primary: #0f172a;
      --secondary: #10b981;
      --accent: #f97316;
      --accent-hover: #ea580c;
      --dark-surface: #090d16;
      --dark-card: #131b2e;
      --light-bg: #f8fafc;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --bs-primary: #10b981;
      --bs-border-radius: 12px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--light-bg);
      line-height: 1.75;
      font-size: 16px;
      overflow-x: hidden;
    }

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

    /* 顶部元信息栏 */
    .top-meta-bar {
      background-color: #070b12;
      color: #94a3b8;
      font-size: 13px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 6px 0;
    }

    /* 复合主导航 */
    .main-header {
      background: rgba(15, 23, 42, 0.96);
      backdrop-filter: blur(12px);
      position: sticky;
      top: 0;
      z-index: 1020;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .brand-logo-text {
      color: #ffffff;
      font-size: 1.35rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .brand-logo-text span {
      background: linear-gradient(135deg, var(--secondary), #38bdf8);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .nav-grid-menu {
      display: flex;
      align-items: center;
      gap: 1.5rem;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .nav-grid-item a {
      color: #cbd5e1;
      font-size: 0.95rem;
      font-weight: 500;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 2px;
      padding: 8px 10px;
      border-radius: 8px;
    }
    .nav-grid-item a i {
      font-size: 1.15rem;
      color: var(--secondary);
      transition: transform 0.2s ease;
    }
    .nav-grid-item a:hover {
      color: #ffffff;
      background: rgba(255, 255, 255, 0.05);
    }
    .nav-grid-item a:hover i {
      transform: translateY(-2px);
      color: var(--accent);
    }

    /* 区域通用规范 */
    .section-wrap {
      padding: 90px 0;
      position: relative;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      letter-spacing: -0.02em;
      margin-bottom: 0.75rem;
      color: var(--primary);
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 780px;
      margin: 0 auto 2.5rem;
      line-height: 1.8;
    }

    /* 卡片微拟态与动效 */
    .engine-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 30px;
      transition: all 0.25s ease;
      box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.05);
      height: 100%;
    }
    .engine-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 35px -12px rgba(15, 23, 42, 0.12);
      border-color: rgba(16, 185, 129, 0.35);
    }

    /* 按钮规范 */
    .btn-glow-accent {
      background-color: var(--accent);
      color: #ffffff;
      font-weight: 600;
      padding: 12px 28px;
      border-radius: 10px;
      border: none;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      box-shadow: 0 4px 18px rgba(249, 115, 22, 0.35);
      transition: all 0.25s ease;
    }
    .btn-glow-accent:hover {
      background-color: var(--accent-hover);
      color: #ffffff;
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(249, 115, 22, 0.45);
    }
    .btn-outline-custom {
      border: 1px solid rgba(255, 255, 255, 0.25);
      color: #ffffff;
      font-weight: 600;
      padding: 12px 26px;
      border-radius: 10px;
      background: rgba(255, 255, 255, 0.04);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-outline-custom:hover {
      background: #ffffff;
      color: var(--primary);
      border-color: #ffffff;
    }

    /* 首屏 Hero 强化 */
    .hero-banner-section {
      background: linear-gradient(135deg, rgba(9, 13, 22, 0.95), rgba(15, 23, 42, 0.92)), url('/assets/images/acbc4d170e6a0882.jpg') center/cover no-repeat;
      color: #ffffff;
      padding: 80px 0 100px;
      position: relative;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      border-radius: 30px;
      background: rgba(16, 185, 129, 0.15);
      border: 1px solid rgba(16, 185, 129, 0.35);
      color: #34d399;
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 20px;
    }
    .hero-h1 {
      font-size: 2.85rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.02em;
    }
    .hero-p {
      font-size: 1.12rem;
      line-height: 1.8;
      color: #cbd5e1;
      margin-bottom: 30px;
    }
    .booking-card-widget {
      background: rgba(19, 27, 46, 0.9);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: 16px;
      padding: 30px;
      backdrop-filter: blur(16px);
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    }

    /* 倒计时条 */
    .countdown-band {
      background: #090d16;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 24px 0;
      color: #ffffff;
    }
    .countdown-unit {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 8px;
      padding: 8px 14px;
      min-width: 60px;
      text-align: center;
    }
    .countdown-unit strong {
      font-size: 1.35rem;
      color: var(--secondary);
      display: block;
      line-height: 1.2;
    }
    .countdown-unit span {
      font-size: 0.72rem;
      color: #94a3b8;
    }

    /* 深色案例墙 */
    .dark-cases-section {
      background-color: var(--dark-surface);
      color: #ffffff;
    }
    .case-panel-item {
      background: var(--dark-card);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 16px;
      overflow: hidden;
      height: 100%;
      transition: all 0.25s ease;
    }
    .case-panel-item:hover {
      transform: translateY(-5px);
      border-color: var(--secondary);
    }
    .case-img-box {
      position: relative;
      overflow: hidden;
      aspect-ratio: 16/9;
    }
    .case-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .case-panel-item:hover .case-img-box img {
      transform: scale(1.05);
    }

    /* 研发效能数据条 */
    .stats-bar-section {
      background: linear-gradient(135deg, #090d16, #111a2e);
      color: #ffffff;
      padding: 60px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .stat-number-display {
      font-size: 2.75rem;
      font-weight: 800;
      color: var(--secondary);
      line-height: 1.1;
      letter-spacing: -0.03em;
    }

    /* 流程时间线 */
    .process-step-node {
      position: relative;
      padding: 24px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      height: 100%;
    }
    .process-index {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: rgba(16, 185, 129, 0.12);
      color: var(--secondary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      margin-bottom: 15px;
    }

    /* FAQ 手风琴重置 */
    .accordion-game-faq .accordion-item {
      border: 1px solid var(--border-color);
      border-radius: 12px !important;
      margin-bottom: 14px;
      overflow: hidden;
      background: #ffffff;
    }
    .accordion-game-faq .accordion-button {
      font-weight: 600;
      font-size: 1.05rem;
      padding: 18px 22px;
      color: var(--primary);
      background: #ffffff;
      box-shadow: none;
    }
    .accordion-game-faq .accordion-button:not(.collapsed) {
      color: var(--accent);
      background-color: #fffaf5;
      border-left: 4px solid var(--accent);
    }
    .accordion-game-faq .accordion-body {
      color: #475569;
      padding: 18px 22px;
      font-size: 0.96rem;
      line-height: 1.8;
      border-top: 1px solid #f1f5f9;
    }

    /* 渠道与合作伙伴 Logo 墙 */
    .partner-brand-tile {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 20px;
      border-radius: 12px;
      text-align: center;
      font-weight: 600;
      color: #64748b;
      transition: all 0.25s ease;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
    }
    .partner-brand-tile:hover {
      border-color: var(--secondary);
      color: var(--primary);
      transform: translateY(-2px);
    }

    /* 表单与输入框 */
    .form-floating > .form-control,
    .form-floating > .form-select {
      border: 1px solid #cbd5e1;
      border-radius: 10px;
    }
    .form-floating > .form-control:focus,
    .form-floating > .form-select:focus {
      border-color: var(--secondary);
      box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.15);
    }

    /* 页脚 */
    .site-footer {
      background: #070b12;
      color: #94a3b8;
      font-size: 0.9rem;
      padding: 70px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-title {
      color: #ffffff;
      font-weight: 600;
      font-size: 1.05rem;
      margin-bottom: 20px;
    }
    .footer-links-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links-list li {
      margin-bottom: 10px;
    }
    .footer-links-list a {
      color: #94a3b8;
    }
    .footer-links-list a:hover {
      color: #ffffff;
      padding-left: 4px;
    }