/* roulang page: index */
:root {
      --primary: #0A84FF;
      --accent: #00F0FF;
      --bg-deep: #0B0E14;
      --card-bg: rgba(19, 26, 36, 0.75);
      --card-border: rgba(10, 132, 255, 0.18);
      --text-main: #E8ECF1;
      --text-secondary: #8899AA;
      --text-muted: #556677;
      --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.55);
      --glow-accent: 0 0 18px rgba(0, 240, 255, 0.55);
      --radius-card: 18px;
      --radius-service: 14px;
      --font-mono: 'Roboto Mono', 'Consolas', 'Monaco', monospace;
      --transition: all 0.25s ease;
    }

    * {
      box-sizing: border-box;
    }

    body {
      background-color: var(--bg-deep);
      color: var(--text-main);
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
      line-height: 1.6;
      margin: 0;
      overflow-x: hidden;
      background-image: radial-gradient(circle at 30% 20%, rgba(10,132,255,0.08) 0%, transparent 35%),
                        radial-gradient(circle at 80% 70%, rgba(0,240,255,0.05) 0%, transparent 40%);
      background-attachment: fixed;
    }

    /* 顶部信息条 */
    .top-bar {
      background: rgba(0, 0, 0, 0.65);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(0, 240, 255, 0.25);
      height: 40px;
      font-size: 12px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 1.5rem;
      color: var(--text-secondary);
    }
    .live-ticker {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      color: var(--accent);
      font-weight: 500;
      letter-spacing: 0.3px;
    }
    .live-dot {
      width: 8px;
      height: 8px;
      background: #00F0FF;
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 10px #00F0FF;
      margin-right: 4px;
      animation: pulse 1.5s infinite;
    }
    @keyframes pulse {
      0% { opacity: 0.7; transform: scale(1); }
      50% { opacity: 1; transform: scale(1.2); }
      100% { opacity: 0.7; transform: scale(1); }
    }
    .top-actions span {
      margin-left: 1.5rem;
      cursor: default;
    }

    /* 主导航 */
    .main-nav {
      background: rgba(11, 14, 20, 0.88);
      backdrop-filter: blur(16px);
      box-shadow: 0 6px 20px rgba(0,0,0,0.6);
      border-bottom: 1px solid rgba(10,132,255,0.15);
      position: sticky;
      top: 0;
      z-index: 1000;
      transition: background 0.3s;
    }
    .navbar-brand {
      font-size: 1.6rem;
      font-weight: 700;
      background: linear-gradient(135deg, #0A84FF 0%, #00F0FF 90%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      letter-spacing: 1px;
      display: flex;
      align-items: center;
    }
    .navbar-nav .nav-link {
      color: #B0B8C1 !important;
      font-weight: 500;
      margin: 0 0.3rem;
      padding: 0.7rem 1rem;
      border-bottom: 2px solid transparent;
      transition: 0.2s;
      font-size: 0.95rem;
    }
    .navbar-nav .nav-link:hover,
    .navbar-nav .nav-link.active {
      color: var(--accent) !important;
      border-bottom-color: var(--accent);
      text-shadow: 0 0 8px rgba(0,240,255,0.4);
    }
    .btn-glow {
      background: linear-gradient(135deg, #0A84FF, #0055cc);
      border: none;
      color: white;
      font-weight: 600;
      padding: 0.5rem 1.5rem;
      border-radius: 8px;
      box-shadow: 0 0 16px rgba(10,132,255,0.5);
      transition: 0.25s;
      letter-spacing: 0.3px;
    }
    .btn-glow:hover {
      box-shadow: 0 0 26px rgba(0,240,255,0.7);
      background: linear-gradient(135deg, #0A84FF, #0077ee);
      color: white;
    }

    section {
      padding: 90px 0;
    }
    @media (max-width: 768px) {
      section { padding: 60px 0; }
    }

    .section-title {
      font-size: 2.5rem;
      font-weight: 700;
      margin-bottom: 1rem;
      letter-spacing: 1px;
    }
    .section-sub {
      color: var(--text-secondary);
      font-size: 1.15rem;
      margin-bottom: 3rem;
    }

    /* Hero */
    #hero {
      min-height: 90vh;
      display: flex;
      align-items: center;
      background: radial-gradient(ellipse at 40% 30%, rgba(10,132,255,0.12) 0%, transparent 60%),
                  url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      background-blend-mode: overlay;
      position: relative;
    }
    .hero-grid-bg {
      position: absolute;
      inset: 0;
      background-image: linear-gradient(rgba(0,240,255,0.05) 1px, transparent 1px),
                        linear-gradient(90deg, rgba(0,240,255,0.05) 1px, transparent 1px);
      background-size: 50px 50px;
      pointer-events: none;
    }
    .hero-title {
      font-size: 3.5rem;
      font-weight: 700;
      background: linear-gradient(to right, #fff, #c0e0ff);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .score-ticker-card {
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      border: 1px solid var(--card-border);
      border-radius: 14px;
      padding: 0.7rem 1.2rem;
      display: flex;
      align-items: center;
      gap: 1rem;
      font-family: var(--font-mono);
      color: var(--accent);
    }

    /* 数据看板卡片 */
    .match-card {
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-card);
      padding: 1.5rem;
      transition: var(--transition);
      box-shadow: var(--shadow-card);
    }
    .match-card:hover {
      border-color: rgba(0,240,255,0.5);
      box-shadow: 0 14px 38px rgba(0,240,255,0.2);
      transform: translateY(-4px);
    }
    .score-big {
      font-size: 2.6rem;
      font-weight: 700;
      font-family: var(--font-mono);
      color: var(--accent);
      text-shadow: 0 0 10px #00F0FF;
    }
    .status-badge {
      background: rgba(0,240,255,0.12);
      color: #00F0FF;
      padding: 0.2rem 0.8rem;
      border-radius: 20px;
      font-size: 0.75rem;
      font-weight: 600;
    }

    /* 服务卡片 */
    .service-card {
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-service);
      padding: 2rem 1.8rem;
      border-left: 6px solid var(--accent);
      transition: var(--transition);
    }
    .service-card:hover {
      border-left-color: #0A84FF;
      box-shadow: 0 0 25px rgba(0,240,255,0.2);
    }

    /* 对比工具 */
    .compare-container {
      background: var(--card-bg);
      backdrop-filter: blur(14px);
      border: 1px solid var(--card-border);
      border-radius: 24px;
      padding: 2.5rem;
    }
    .vs-circle {
      background: rgba(0,240,255,0.15);
      width: 56px;
      height: 56px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--accent);
      font-size: 1.4rem;
      box-shadow: 0 0 20px rgba(0,240,255,0.4);
    }

    /* FAQ */
    .accordion-button {
      background: transparent !important;
      color: var(--text-main) !important;
      font-weight: 600;
      border: none;
      box-shadow: none;
    }
    .accordion-button:not(.collapsed) {
      background: rgba(10,132,255,0.08) !important;
      color: var(--accent) !important;
      border-left: 4px solid var(--accent);
    }
    .accordion-item {
      background: transparent;
      border: none;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }

    .form-control {
      background: rgba(19,26,36,0.8);
      border: 1px solid rgba(10,132,255,0.25);
      color: white;
      border-radius: 8px;
      padding: 0.8rem;
    }
    .form-control:focus {
      border-color: var(--accent);
      box-shadow: 0 0 12px rgba(0,240,255,0.5);
      background: rgba(19,26,36,0.9);
    }

    footer {
      background: #0a0d12;
      border-top: 2px solid rgba(0,240,255,0.3);
    }