/* roulang page: index */
@import url('/assets/css/vendor/0b67347532-css2.css');
    
    :root {
      --primary: #00E5A0;
      --primary-glow: rgba(0, 229, 160, 0.6);
      --bg-deep: #0B0E1A;
      --bg-card: rgba(15, 23, 42, 0.65);
      --text-main: #F1F5F9;
      --text-muted: #94A3B8;
      --border-light: rgba(0, 229, 160, 0.2);
      --radius-card: 16px;
      --radius-btn: 12px;
      --radius-input: 8px;
      --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
      --transition: 0.25s ease;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
      background-color: var(--bg-deep);
      color: var(--text-main);
      line-height: 1.7;
      overflow-x: hidden;
    }

    .container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    /* 玻璃拟态卡片 */
    .glass-card {
      background: rgba(15, 23, 42, 0.65);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border: 1px solid rgba(0, 229, 160, 0.12);
      border-radius: var(--radius-card);
      box-shadow: 0 10px 25px -8px rgba(0,0,0,0.4);
      transition: border 0.3s, box-shadow 0.3s, transform 0.3s;
    }

    .glass-card:hover {
      border-color: rgba(0, 229, 160, 0.4);
      box-shadow: 0 16px 32px -8px rgba(0, 229, 160, 0.15);
    }

    /* 导航 */
    #header-nav {
      background: rgba(11, 14, 26, 0.7);
      backdrop-filter: blur(22px);
      -webkit-backdrop-filter: blur(22px);
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 72px;
      z-index: 50;
      border-bottom: 1px solid rgba(0, 229, 160, 0.15);
      transition: background 0.3s, backdrop-filter 0.3s;
    }
    #header-nav.scrolled {
      background: rgba(11, 14, 26, 0.96);
      backdrop-filter: blur(28px);
    }

    .nav-link {
      color: #94A3B8;
      font-weight: 500;
      transition: color 0.2s, text-shadow 0.2s;
      position: relative;
    }
    .nav-link:hover {
      color: #00E5A0;
      text-shadow: 0 0 8px rgba(0,229,160,0.5);
    }

    /* 按钮 */
    .btn-primary {
      background: #00E5A0;
      color: #0B0E1A;
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 0.75rem 2rem;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: 0.25s ease;
      box-shadow: 0 6px 18px rgba(0,229,160,0.25);
      border: none;
      cursor: pointer;
    }
    .btn-primary:hover {
      filter: brightness(1.1);
      box-shadow: 0 10px 24px rgba(0,229,160,0.45);
      transform: translateY(-1px);
    }

    .btn-outline {
      background: transparent;
      border: 1px solid #00E5A0;
      color: #00E5A0;
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 0.75rem 2rem;
      transition: 0.25s ease;
      cursor: pointer;
    }
    .btn-outline:hover {
      background: rgba(0,229,160,0.1);
      box-shadow: 0 0 16px rgba(0,229,160,0.3);
    }

    /* 终端光标动画 */
    .cursor-blink {
      display: inline-block;
      width: 10px;
      height: 1.2em;
      background: #00E5A0;
      margin-left: 4px;
      vertical-align: middle;
      animation: blink 1s step-end infinite;
    }
    @keyframes blink {
      0%, 100% { opacity: 1; }
      50% { opacity: 0; }
    }

    .text-glow {
      text-shadow: 0 0 12px var(--primary-glow);
    }

    .border-glow {
      border-color: rgba(0,229,160,0.5);
      box-shadow: 0 0 18px rgba(0,229,160,0.2);
    }

    /* 服务非对称卡片 */
    .service-card {
      transition: all 0.3s ease;
    }
    .service-card.featured {
      transform: scale(1.05);
      border-color: rgba(0,229,160,0.5);
      box-shadow: 0 0 28px rgba(0,229,160,0.3);
      z-index: 2;
      position: relative;
    }
    @media (max-width: 1024px) {
      .service-card.featured {
        transform: none;
      }
    }

    /* FAQ 手风琴 */
    .faq-item {
      border-bottom: 1px solid rgba(0,229,160,0.2);
    }
    .faq-question {
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 1.2rem 0;
      font-weight: 600;
      color: #F1F5F9;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.3s;
      color: #CBD5E1;
      padding-left: 1.8rem;
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
      padding-bottom: 1.2rem;
      background: rgba(0,229,160,0.02);
    }
    .faq-prompt {
      font-family: var(--font-mono);
      color: #00E5A0;
      margin-right: 12px;
      font-size: 1.3rem;
    }

    /* 输入框 */
    input, textarea {
      background: rgba(15,23,42,0.8);
      border: 1px solid rgba(0,229,160,0.3);
      border-radius: var(--radius-input);
      padding: 0.8rem 1rem;
      color: white;
      transition: 0.2s;
      width: 100%;
      outline: none;
    }
    input:focus, textarea:focus {
      border-color: #00E5A0;
      box-shadow: 0 0 14px rgba(0,229,160,0.4);
    }

    footer {
      background: #0B0E1A;
      border-top: 1px solid rgba(0,229,160,0.3);
    }