/* roulang page: index */
:root {
      --mk-deep-blue: #0A0E27;
      --mk-dark-bg: #0A0E27;
      --mk-bg-gradient: #141832;
      --mk-electric-blue: #00C2FF;
      --mk-energy-orange: #FF6B35;
      --mk-victory-gold: #FFD700;
      --mk-card-bg: rgba(26, 31, 58, 0.6);
      --mk-text-body: #8A8FA3;
      --mk-text-light: #E8ECF1;
      --mk-white: #FFFFFF;
      --mk-border-glow: rgba(0, 194, 255, 0.15);
      --mk-shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
      --mk-shadow-hover: 0 16px 48px rgba(0, 194, 255, 0.25);
      --mk-radius-card: 16px;
      --mk-radius-btn: 50px;
      --mk-font-sans: 'Inter', 'SF Pro Display', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --mk-transition: 0.25s ease;
      --mk-glass-blur: blur(20px);
    }
    
    * {
      box-sizing: border-box;
    }
    
    body {
      background: radial-gradient(circle at 30% 10%, #141832, #0A0E27);
      background-attachment: fixed;
      color: var(--mk-text-body);
      font-family: var(--mk-font-sans);
      line-height: 1.6;
      margin: 0;
      overflow-x: hidden;
    }
    
    h1, h2, h3, h4, h5, h6 {
      color: var(--mk-white);
      font-weight: 600;
      letter-spacing: -0.3px;
    }
    
    .container-custom {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }
    
    /* 导航栏 - 搜索主导型 */
    .mk-navbar {
      background: rgba(10, 14, 39, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(0, 194, 255, 0.2);
      padding: 16px 0;
      transition: all 0.3s ease;
      position: sticky;
      top: 0;
      z-index: 1050;
    }
    
    .mk-logo {
      font-size: 28px;
      font-weight: 700;
      color: var(--mk-white);
      text-decoration: none;
      letter-spacing: -0.5px;
      background: linear-gradient(135deg, #00C2FF, #FFFFFF);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .mk-logo span {
      font-weight: 300;
      color: var(--mk-electric-blue);
      -webkit-text-fill-color: initial;
      background: none;
      margin-left: 4px;
    }
    
    .mk-search-wrapper {
      position: relative;
      max-width: 420px;
      width: 100%;
    }
    .mk-search-input {
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 50px;
      padding: 12px 20px 12px 48px;
      color: white;
      font-size: 15px;
      width: 100%;
      transition: 0.2s;
      backdrop-filter: blur(4px);
    }
    .mk-search-input::placeholder {
      color: #8A8FA3;
      font-weight: 400;
    }
    .mk-search-input:focus {
      outline: none;
      border-color: var(--mk-electric-blue);
      background: rgba(255, 255, 255, 0.12);
      box-shadow: 0 0 12px rgba(0, 194, 255, 0.5);
    }
    .mk-search-icon {
      position: absolute;
      left: 18px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--mk-electric-blue);
      font-size: 18px;
    }
    
    .mk-nav-link {
      color: var(--mk-text-light);
      font-weight: 500;
      margin: 0 12px;
      text-decoration: none;
      transition: 0.2s;
      font-size: 16px;
    }
    .mk-nav-link:hover {
      color: var(--mk-electric-blue);
    }
    
    .btn-mk-primary {
      background: linear-gradient(135deg, #00C2FF, #0099CC);
      border: none;
      border-radius: 50px;
      padding: 12px 28px;
      font-weight: 700;
      color: white;
      box-shadow: 0 4px 16px rgba(0, 194, 255, 0.4);
      transition: 0.25s ease;
      letter-spacing: 0.3px;
      font-size: 16px;
    }
    .btn-mk-primary:hover {
      box-shadow: 0 8px 24px rgba(0, 194, 255, 0.7);
      transform: translateY(-2px);
      color: white;
      background: linear-gradient(135deg, #33ccff, #00aadd);
    }
    
    .btn-mk-cta {
      background: linear-gradient(135deg, #FF6B35, #E55A2B);
      box-shadow: 0 4px 18px rgba(255, 107, 53, 0.5);
      border: none;
      border-radius: 50px;
      padding: 14px 32px;
      font-weight: 700;
      color: white;
      transition: 0.25s;
    }
    .btn-mk-cta:hover {
      box-shadow: 0 8px 28px rgba(255, 107, 53, 0.8);
      transform: translateY(-2px);
      color: white;
    }
    
    .btn-mk-outline {
      background: transparent;
      border: 2px solid var(--mk-electric-blue);
      color: var(--mk-electric-blue);
      border-radius: 50px;
      padding: 10px 26px;
      font-weight: 600;
      transition: 0.2s;
    }
    .btn-mk-outline:hover {
      background: rgba(0, 194, 255, 0.12);
      color: white;
    }
    
    /* Hero */
    .hero-section {
      min-height: 85vh;
      display: flex;
      align-items: center;
      position: relative;
      background: linear-gradient(135deg, rgba(10,14,39,0.9) 0%, rgba(20,24,50,0.7) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      background-blend-mode: overlay;
    }
    .hero-title {
      font-size: 3.8rem;
      font-weight: 700;
      line-height: 1.2;
      letter-spacing: -0.8px;
    }
    
    /* 玻璃拟态卡片 */
    .glass-card {
      background: rgba(26, 31, 58, 0.55);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border: 1px solid rgba(0, 194, 255, 0.18);
      border-radius: 16px;
      box-shadow: 0 8px 32px rgba(0,0,0,0.45);
      padding: 32px;
      transition: all 0.3s ease;
      color: var(--mk-text-body);
    }
    .glass-card:hover {
      transform: translateY(-6px);
      border-color: rgba(0, 194, 255, 0.4);
      box-shadow: 0 18px 45px rgba(0, 194, 255, 0.3);
    }
    
    .section-title {
      font-size: 2.5rem;
      font-weight: 600;
      margin-bottom: 1rem;
    }
    
    .data-highlight {
      font-size: 3rem;
      font-weight: 700;
      color: var(--mk-victory-gold);
    }
    
    .faq-card {
      background: rgba(26, 31, 58, 0.55);
      backdrop-filter: blur(20px);
      border: 1px solid rgba(0,194,255,0.2);
      border-radius: 14px;
      margin-bottom: 10px;
    }
    .faq-card .accordion-button {
      background: transparent;
      color: white;
      font-weight: 600;
      box-shadow: none;
    }
    .faq-card .accordion-button:not(.collapsed) {
      background: rgba(0,194,255,0.1);
      color: white;
    }
    
    footer {
      background: #0A0E27;
      border-top: 1px solid rgba(255,255,255,0.08);
    }
    
    @media (max-width: 768px) {
      .hero-title {
        font-size: 2.3rem;
      }
      .glass-card {
        padding: 24px;
      }
    }