/* roulang page: index */
:root {
      --deep-bg: #12121F;
      --card-bg: #1A1A2E;
      --nav-bg: #1A1A2E;
      --channel-bg: #0F3460;
      --accent: #E94560;
      --accent-hover: #C23152;
      --secondary-bg: #0F3460;
      --text-primary: #EAEAEA;
      --text-secondary: #A0A0B0;
      --text-muted: #6A6A7A;
      --border-light: rgba(255,255,255,0.08);
      --border-input: #2A2A4A;
      --input-bg: #16162A;
      --shadow-card: 0 4px 20px rgba(0,0,0,0.4);
      --shadow-hover: 0 8px 30px rgba(233,69,96,0.15);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --font-mono: 'Roboto Mono', 'Inter', monospace;
      --transition: 0.25s ease;
    }
    * {
      box-sizing: border-box;
    }
    body {
      background-color: var(--deep-bg);
      color: var(--text-primary);
      font-family: 'Inter', 'Noto Sans SC', sans-serif;
      line-height: 1.7;
      margin: 0;
      padding: 0;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: var(--text-secondary);
      transition: color var(--transition);
    }
    a:hover {
      color: var(--accent);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container, .container-lg, .container-md {
      padding-left: 1rem;
      padding-right: 1rem;
    }
    /* 自定义按钮覆盖 */
    .btn {
      border-radius: 6px;
      padding: 12px 28px;
      font-weight: 600;
      transition: all 0.3s ease;
      border: none;
      letter-spacing: 0.02em;
    }
    .btn-primary {
      background-color: var(--accent) !important;
      border-color: var(--accent) !important;
      color: white !important;
    }
    .btn-primary:hover, .btn-primary:focus {
      background-color: var(--accent-hover) !important;
      border-color: var(--accent-hover) !important;
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(233,69,96,0.3);
      outline: none;
    }
    .btn-outline-accent {
      background: transparent;
      border: 1px solid var(--accent);
      color: var(--accent);
      background-color: transparent !important;
      border-color: var(--accent) !important;
      color: var(--accent) !important;
    }
    .btn-outline-accent:hover {
      background-color: var(--accent) !important;
      color: white !important;
      border-color: var(--accent) !important;
    }
    /* 导航 */
    .navbar-brand-custom {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 800;
      font-size: 1.6rem;
      color: var(--text-primary);
      letter-spacing: -0.5px;
    }
    .navbar-brand-custom i {
      color: var(--accent);
      font-size: 1.8rem;
    }
    .brand-text {
      background: linear-gradient(to right, #EAEAEA, #E94560);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .navbar-top {
      background-color: var(--nav-bg);
      border-bottom: 1px solid #2A2A3E;
      padding: 0.5rem 0;
    }
    .channel-nav {
      background-color: var(--channel-bg);
      padding: 0.6rem 0;
      overflow-x: auto;
      white-space: nowrap;
      -webkit-overflow-scrolling: touch;
    }
    .channel-link {
      display: inline-block;
      color: var(--text-secondary);
      margin-right: 1.8rem;
      font-weight: 500;
      font-size: 0.95rem;
      padding-bottom: 4px;
      border-bottom: 2px solid transparent;
      transition: 0.2s;
    }
    .channel-link.active, .channel-link:hover {
      color: var(--accent);
      border-bottom-color: var(--accent);
    }
    /* Hero */
    .hero-section {
      background: radial-gradient(circle at 20% 20%, #1e1e36, #12121F);
      padding: 4rem 0 5rem;
    }
    .hero-title {
      font-size: 3.5rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      line-height: 1.2;
      color: var(--text-primary);
    }
    .highlight {
      color: var(--accent);
    }
    .hero-sub {
      color: var(--text-secondary);
      font-size: 1.2rem;
      margin: 1.5rem 0;
    }
    .stat-number {
      font-family: var(--font-mono);
      font-weight: 700;
      font-size: 2rem;
      color: var(--accent);
    }
    .live-panel {
      background: rgba(26,26,46,0.7);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: var(--radius-lg);
      padding: 1.8rem;
      position: relative;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      background-blend-mode: overlay;
      min-height: 280px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .score-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 0.75rem 0;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .live-dot {
      width: 10px;
      height: 10px;
      background: var(--accent);
      border-radius: 50%;
      display: inline-block;
      margin-right: 6px;
      animation: pulse 1.4s infinite;
    }
    @keyframes pulse {
      0% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.6; transform: scale(1.2); }
      100% { opacity: 1; transform: scale(1); }
    }
    /* 卡片通用 */
    .card-custom {
      background: var(--card-bg);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 1.8rem;
      transition: all 0.3s ease;
      height: 100%;
    }
    .card-custom:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(233,69,96,0.25);
    }
    .section-title {
      font-size: 2.25rem;
      font-weight: 700;
      color: var(--text-primary);
      margin-bottom: 1rem;
    }
    .title-decor {
      width: 60px;
      height: 3px;
      background: var(--accent);
      margin-bottom: 2rem;
    }
    /* 优势图标 */
    .icon-circle {
      font-size: 2.4rem;
      color: var(--accent);
      margin-bottom: 1rem;
    }
    /* 产品卡片迷你比分 */
    .mini-score {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      margin-bottom: 1.2rem;
    }
    .team-bar {
      height: 8px;
      width: 50px;
      background: #0F3460;
      border-radius: 4px;
    }
    .team-bar.accent {
      background: var(--accent);
    }
    .score-num {
      font-family: var(--font-mono);
      font-weight: 700;
      color: var(--accent);
      font-size: 1.2rem;
    }
    /* 案例卡片 */
    .case-img {
      height: 160px;
      background-size: cover;
      background-position: center;
      border-radius: var(--radius-sm) var(--radius-sm) 0 0;
      position: relative;
    }
    .case-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-light);
      transition: 0.3s;
    }
    .case-card:hover {
      box-shadow: var(--shadow-hover);
    }
    /* FAQ */
    .accordion-button {
      background-color: var(--card-bg) !important;
      color: var(--text-primary) !important;
      border: 1px solid #2A2A3E !important;
      font-weight: 600;
      box-shadow: none !important;
    }
    .accordion-button:not(.collapsed) {
      background-color: var(--secondary-bg) !important;
      color: white !important;
      border-color: var(--accent) !important;
    }
    .accordion-button::after {
      filter: brightness(0) invert(0.8);
    }
    .accordion-item {
      background: transparent;
      border: none;
      margin-bottom: 1rem;
    }
    .accordion-body {
      background: #0F3460;
      color: var(--text-secondary);
      border: 1px solid #2A2A3E;
      border-top: none;
    }
    /* 表单 */
    .form-control {
      background-color: var(--input-bg) !important;
      border: 1px solid var(--border-input) !important;
      color: var(--text-primary) !important;
      border-radius: 6px !important;
      padding: 0.75rem;
    }
    .form-control:focus {
      border-color: var(--accent) !important;
      box-shadow: none !important;
      outline: none;
    }
    .form-label {
      color: var(--text-secondary);
      margin-bottom: 0.4rem;
    }
    footer {
      background-color: #0A0A14;
      color: var(--text-muted);
      padding: 3rem 0 1.5rem;
    }
    @media (max-width: 768px) {
      .hero-title {
        font-size: 2.5rem;
      }
      .channel-link {
        margin-right: 1rem;
        font-size: 0.85rem;
      }
    }