/* roulang page: index */
:root {
      --bg-dark: #0c0d12;
      --bg-card: #151720;
      --bg-card-hover: #1b1e2a;
      --bg-accent: #11131a;
      --gold-primary: #d4af37;
      --gold-light: #f3e5ab;
      --gold-dark: #aa820a;
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
      --border-color: rgba(212, 175, 55, 0.2);
      --border-light: rgba(255, 255, 255, 0.08);
      --radius: 10px;
      --sidebar-width: 260px;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      overflow-x: hidden;
    }

    a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
    a:hover { color: var(--gold-light); }

    /* Left App Shell 布局 */
    .app-layout {
      display: flex;
      min-height: 100vh;
    }
    .app-sidebar {
      width: var(--sidebar-width);
      background-color: var(--bg-accent);
      border-right: 1px solid var(--border-light);
      position: fixed;
      top: 0;
      bottom: 0;
      left: 0;
      z-index: 1000;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      padding: 24px 16px;
    }
    .app-content {
      margin-left: var(--sidebar-width);
      flex: 1;
      width: calc(100% - var(--sidebar-width));
      background-color: var(--bg-dark);
      min-width: 0;
    }

    /* 侧边栏元素 */
    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 0 12px 24px;
      border-bottom: 1px solid var(--border-light);
    }
    .brand-icon {
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, var(--gold-primary), var(--gold-dark));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #000;
      font-size: 20px;
      font-weight: 900;
      box-shadow: 0 0 12px rgba(212, 175, 55, 0.4);
    }
    .brand-text {
      font-size: 1.25rem;
      font-weight: 800;
      letter-spacing: 0.5px;
      color: #fff;
    }
    .nav-list {
      list-style: none;
      margin: 24px 0;
      padding: 0;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .nav-item a {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px 16px;
      border-radius: var(--radius);
      color: var(--text-muted);
      font-weight: 500;
      border: 1px solid transparent;
    }
    .nav-item.active a, .nav-item a:hover {
      background-color: rgba(212, 175, 55, 0.1);
      color: var(--gold-light);
      border-color: var(--border-color);
    }
    .sidebar-user {
      padding: 16px;
      background: var(--bg-card);
      border-radius: var(--radius);
      border: 1px solid var(--border-light);
    }
    .user-badge {
      display: inline-block;
      font-size: 0.75rem;
      padding: 2px 8px;
      background: linear-gradient(90deg, #d4af37, #aa820a);
      color: #0c0d12;
      border-radius: 4px;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .user-info { font-size: 0.85rem; color: var(--text-muted); }

    /* 内容容器 & 板块规范 */
    .container-wide {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 32px;
    }
    section.block-section {
      padding: 64px 0;
      border-bottom: 1px solid var(--border-light);
    }
    section.block-section:nth-child(even) {
      background-color: rgba(21, 23, 32, 0.45);
    }
    .section-header {
      margin-bottom: 40px;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      color: var(--gold-primary);
      text-transform: uppercase;
      letter-spacing: 1.5px;
      margin-bottom: 8px;
      font-weight: 600;
    }
    .section-title {
      font-size: 1.85rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 14px;
    }
    .section-desc {
      font-size: 0.98rem;
      color: var(--text-muted);
      max-width: 820px;
      line-height: 1.7;
    }

    /* 按钮与徽章 */
    .btn-gold {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: linear-gradient(135deg, #d4af37 0%, #aa820a 100%);
      color: #0c0d12;
      font-weight: 700;
      padding: 12px 28px;
      border-radius: 6px;
      box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
      cursor: pointer;
      border: none;
    }
    .btn-gold:hover {
      background: linear-gradient(135deg, #f3e5ab 0%, #d4af37 100%);
      color: #000;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(212, 175, 55, 0.4);
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: transparent;
      color: var(--text-main);
      padding: 12px 28px;
      border-radius: 6px;
      border: 1px solid var(--border-light);
      cursor: pointer;
    }
    .btn-outline:hover {
      background: var(--bg-card);
      border-color: var(--gold-primary);
      color: var(--gold-light);
    }

    /* Hero：黑金会员俱乐部风格 */
    .hero-panel {
      padding: 80px 0 64px;
      background: radial-gradient(circle at 80% 20%, rgba(212, 175, 55, 0.12) 0%, transparent 60%);
      border-bottom: 1px solid var(--border-light);
    }
    .hero-h1 {
      font-size: 2.75rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 20px;
      background: linear-gradient(135deg, #ffffff 40%, var(--gold-light) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.1rem;
      color: var(--text-muted);
      margin-bottom: 32px;
      max-width: 760px;
      line-height: 1.8;
    }
    .hero-card-badge {
      background: linear-gradient(145deg, #1e2230, #141622);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    }

    /* 通用卡片组件 */
    .custom-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius);
      padding: 24px;
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.3s ease;
    }
    .custom-card:hover {
      border-color: var(--gold-primary);
      transform: translateY(-4px);
      box-shadow: 0 8px 24px rgba(0,0,0,0.4);
    }
    .card-icon {
      font-size: 1.8rem;
      color: var(--gold-primary);
      margin-bottom: 16px;
    }
    .card-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 10px;
    }
    .card-text {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 移动端菜单与适配 */
    .mobile-header {
      display: none;
      padding: 16px 20px;
      background: var(--bg-accent);
      border-bottom: 1px solid var(--border-light);
      align-items: center;
      justify-content: space-between;
      position: sticky;
      top: 0;
      z-index: 1001;
    }
    @media (max-width: 1024px) {
      .app-sidebar { display: none; }
      .app-content { margin-left: 0; width: 100%; }
      .mobile-header { display: flex; }
      .hero-h1 { font-size: 2.1rem; }
    }
    @media (max-width: 640px) {
      .container-wide { padding: 0 20px; }
      section.block-section { padding: 48px 0; }
      .hero-h1 { font-size: 1.8rem; }
    }

    /* 专属板块样式 */
    .stat-number {
      font-size: 2.4rem;
      font-weight: 800;
      color: var(--gold-primary);
      font-family: monospace;
    }
    .timeline-item {
      position: relative;
      padding-left: 28px;
      margin-bottom: 24px;
      border-left: 2px solid var(--border-color);
    }
    .timeline-item::before {
      content: "";
      position: absolute;
      left: -7px;
      top: 4px;
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: var(--gold-primary);
    }
    .footer-box {
      padding: 40px 0;
      background: #08090c;
      border-top: 1px solid var(--border-light);
      color: var(--text-muted);
      font-size: 0.85rem;
    }