/* roulang page: index */
:root {
      --primary: #00F0A8;
      --primary-glow: rgba(0, 240, 168, 0.7);
      --secondary-bg: #0A0E27;
      --accent: #FF6B35;
      --accent-glow: rgba(255, 107, 53, 0.7);
      --text-main: #E8F0FE;
      --text-muted: #8892B0;
      --card-bg: rgba(15, 25, 55, 0.55);
      --card-border: rgba(0, 240, 168, 0.18);
      --glass-blur: blur(20px) saturate(180%);
      --border-light: rgba(0, 240, 168, 0.2);
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(0, 240, 168, 0.12);
      --shadow-button: 0 4px 15px rgba(255, 107, 53, 0.4);
      --font-mono: 'Roboto Mono', 'DIN Alternate', monospace;
      --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
      --border-radius-card: 16px;
      --border-radius-btn: 8px;
      --border-radius-pill: 24px;
      --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1.2);
    }
    
    * {
      box-sizing: border-box;
    }
    
    body {
      background-color: var(--secondary-bg);
      color: var(--text-main);
      font-family: var(--font-sans);
      line-height: 1.6;
      margin: 0;
      overflow-x: hidden;
      position: relative;
      background-image: radial-gradient(circle at 30% 40%, rgba(0,240,168,0.03) 0%, transparent 35%);
    }
    
    /* 全局网格水印背景 */
    body::before {
      content: "";
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: 
        linear-gradient(rgba(0, 240, 168, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 240, 168, 0.03) 1px, transparent 1px);
      background-size: 40px 40px;
      pointer-events: none;
      z-index: 0;
    }
    
    .container, .container-fluid {
      position: relative;
      z-index: 2;
    }
    
    /* 排版 */
    h1, h2, h3, h4, .h1, .h2, .h3 {
      font-weight: 700;
      letter-spacing: -0.02em;
    }
    
    .section-title {
      font-size: 36px;
      line-height: 1.2;
      color: var(--text-main);
      margin-bottom: 1.5rem;
      padding-left: 1.2rem;
      border-left: 4px solid var(--primary);
      display: inline-block;
    }
    
    .text-muted-custom {
      color: var(--text-muted) !important;
    }
    
    .mono-font {
      font-family: var(--font-mono);
    }
    
    /* 导航栏 */
    .navbar {
      background: rgba(10, 14, 39, 0.8);
      backdrop-filter: blur(15px);
      border-bottom: 1px solid var(--border-light);
      padding: 0.8rem 0;
      z-index: 1000;
      transition: background 0.3s;
    }
    .navbar.scrolled {
      background: rgba(10, 14, 39, 0.95);
    }
    .navbar-brand {
      font-weight: 700;
      font-size: 1.6rem;
      color: var(--primary) !important;
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .navbar-brand i {
      font-size: 1.8rem;
      color: var(--primary);
    }
    .nav-link {
      color: var(--text-muted) !important;
      font-weight: 500;
      margin: 0 0.5rem;
      transition: var(--transition-smooth);
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary) !important;
      text-shadow: 0 0 8px var(--primary-glow);
    }
    .search-box {
      background: rgba(255,255,255,0.08);
      border: 1px solid rgba(0,240,168,0.2);
      border-radius: var(--border-radius-pill);
      padding: 0.4rem 1rem 0.4rem 2.5rem;
      color: white;
      width: 280px;
      transition: var(--transition-smooth);
      position: relative;
    }
    .search-box:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 12px var(--primary-glow);
      background: rgba(0,0,0,0.4);
    }
    .search-icon {
      position: absolute;
      left: 15px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-muted);
      z-index: 5;
    }
    @media (max-width: 992px) {
      .search-box {
        width: 100%;
        margin-top: 10px;
      }
      .navbar-brand {
        font-size: 1.4rem;
      }
    }
    
    /* 按钮 */
    .btn-primary-custom {
      background: var(--accent);
      border: none;
      color: white;
      border-radius: var(--border-radius-btn);
      padding: 0.7rem 2rem;
      font-weight: 600;
      box-shadow: 0 4px 15px var(--accent-glow);
      transition: var(--transition-smooth);
      letter-spacing: 0.5px;
    }
    .btn-primary-custom:hover {
      background: #ff7f4d;
      box-shadow: 0 8px 25px var(--accent-glow);
      transform: translateY(-2px);
      color: white;
    }
    .btn-outline-custom {
      background: transparent;
      border: 1px solid var(--primary);
      color: var(--primary);
      border-radius: var(--border-radius-btn);
      padding: 0.7rem 2rem;
      font-weight: 600;
      transition: var(--transition-smooth);
    }
    .btn-outline-custom:hover {
      background: rgba(0,240,168,0.1);
      border-color: var(--primary);
      box-shadow: 0 0 15px var(--primary-glow);
      color: var(--primary);
      transform: translateY(-2px);
    }
    
    /* 玻璃卡片 */
    .glass-card {
      background: var(--card-bg);
      backdrop-filter: var(--glass-blur);
      border: 1px solid var(--card-border);
      border-radius: var(--border-radius-card);
      box-shadow: var(--shadow-card);
      transition: var(--transition-smooth);
      position: relative;
      overflow: hidden;
    }
    .glass-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--primary), transparent);
    }
    .glass-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 16px 40px rgba(0,0,0,0.6), 0 0 20px rgba(0,240,168,0.2);
      border-color: rgba(0,240,168,0.4);
    }
    
    /* Hero区域 */
    .hero-section {
      padding: 7rem 0 5rem;
      position: relative;
    }
    .hero-title {
      font-size: 3.2rem;
      font-weight: 700;
      background: linear-gradient(to right, #fff, var(--primary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .dynamic-text {
      font-family: var(--font-mono);
      color: var(--primary);
      border-right: 2px solid var(--primary);
      padding-right: 5px;
    }
    .hero-visual {
      background: rgba(10,20,40,0.7);
      backdrop-filter: blur(15px);
      border-radius: 20px;
      padding: 20px;
      border: 1px solid var(--card-border);
      transform: perspective(800px) rotateY(-5deg) rotateX(2deg);
      box-shadow: 0 20px 40px rgba(0,0,0,0.7);
    }
    
    /* 实时数据面板 */
    .live-panel {
      background: rgba(8, 15, 30, 0.7);
      backdrop-filter: blur(25px);
      border: 1px solid var(--card-border);
      border-radius: 20px;
      overflow: hidden;
      position: relative;
    }
    .live-dot {
      width: 10px;
      height: 10px;
      background: #ff3b3b;
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 15px red;
      animation: pulse 1.2s infinite;
    }
    @keyframes pulse { 0% { opacity: 1; } 50% { opacity: 0.4; } 100% { opacity: 1; } }
    
    .score-number {
      font-family: var(--font-mono);
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--primary);
    }
    
    /* 价格卡片高亮 */
    .price-highlight {
      background: rgba(0,240,168,0.08);
      border-color: var(--primary);
      transform: scale(1.03);
    }
    
    /* FAQ手风琴 */
    .accordion-button {
      background: rgba(20,30,55,0.6);
      color: var(--text-main);
      font-weight: 500;
      border: none;
      border-radius: 12px !important;
      margin-bottom: 8px;
    }
    .accordion-button:not(.collapsed) {
      background: rgba(0,240,168,0.1);
      color: var(--primary);
      box-shadow: none;
    }
    .accordion-item {
      background: transparent;
      border: none;
    }
    
    footer {
      background: #060B1C;
      border-top: 2px solid var(--primary);
    }
    
    @media (max-width: 768px) {
      .hero-title { font-size: 2.2rem; }
      .section-title { font-size: 28px; }
    }