/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');

    :root {
      --deep-bg: #0A0E27;
      --deep-bg-alt: #141832;
      --cyan: #00F0FF;
      --cyan-dark: #00C8FF;
      --orange: #FF6B35;
      --glass-bg: rgba(20, 24, 50, 0.7);
      --glass-border: rgba(0, 240, 255, 0.15);
      --glass-border-hover: rgba(0, 240, 255, 0.4);
      --text-primary: #F0F4FF;
      --text-secondary: #B0C4DE;
      --text-muted: #8899AA;
      --radius-lg: 16px;
      --radius-full: 50px;
      --shadow-glow: 0 8px 32px rgba(0, 240, 255, 0.12);
      --shadow-glow-hover: 0 0 24px rgba(0, 240, 255, 0.5);
      --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Inter", "SF Pro Display", sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: var(--font-sans);
      background-color: var(--deep-bg);
      color: var(--text-primary);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      background-image: 
        linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
      background-size: 60px 60px;
    }

    .container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 玻璃拟态卡片 */
    .glass-card {
      background: var(--glass-bg);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-lg);
      transition: all 0.3s ease;
    }
    .glass-card:hover {
      border-color: var(--glass-border-hover);
      transform: translateY(-4px);
      box-shadow: var(--shadow-glow);
    }

    /* 按钮系统 */
    .btn-primary {
      background: linear-gradient(135deg, var(--cyan), var(--cyan-dark));
      color: var(--deep-bg);
      font-weight: 600;
      border-radius: var(--radius-full);
      padding: 12px 28px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: all 0.25s;
      border: none;
      box-shadow: 0 4px 12px rgba(0, 240, 255, 0.25);
      letter-spacing: 0.3px;
    }
    .btn-primary:hover {
      box-shadow: var(--shadow-glow-hover);
      transform: scale(1.03);
      background: linear-gradient(135deg, #33F5FF, #00D4FF);
    }

    .btn-secondary {
      background: transparent;
      border: 1px solid var(--cyan);
      color: var(--cyan);
      font-weight: 500;
      border-radius: var(--radius-full);
      padding: 10px 26px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: all 0.25s;
    }
    .btn-secondary:hover {
      background: rgba(0, 240, 255, 0.1);
      border-color: rgba(0, 240, 255, 0.8);
      color: #fff;
    }

    .btn-cta-orange {
      background: var(--orange);
      color: #fff;
      font-weight: 700;
      border-radius: var(--radius-full);
      padding: 16px 40px;
      font-size: 18px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: all 0.3s;
      border: none;
      box-shadow: 0 8px 24px rgba(255, 107, 53, 0.35);
    }
    .btn-cta-orange:hover {
      box-shadow: 0 0 28px rgba(255, 107, 53, 0.7);
      transform: scale(1.03);
      background: #FF7F4D;
    }

    /* 导航栏 */
    .nav-blur {
      background: rgba(10, 14, 39, 0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(0, 240, 255, 0.2);
    }
    .nav-link {
      color: var(--text-secondary);
      font-weight: 500;
      font-size: 0.95rem;
      position: relative;
      padding-bottom: 6px;
      transition: color 0.2s;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--cyan);
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0%;
      height: 2px;
      background: var(--cyan);
      transition: width 0.25s ease;
    }
    .nav-link:hover::after {
      width: 100%;
    }
    .search-box {
      background: rgba(255,255,255,0.08);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: 50px;
      color: white;
      padding: 8px 16px;
      width: 180px;
      transition: all 0.3s;
    }
    .search-box:focus {
      width: 240px;
      border-color: var(--cyan);
      outline: none;
      background: rgba(20,24,50,0.8);
    }

    /* 手风琴 */
    .faq-item {
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .faq-question {
      cursor: pointer;
      font-weight: 600;
      font-size: 1.1rem;
      padding: 20px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.2s;
      color: var(--text-secondary);
      padding: 0 0;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding-bottom: 20px;
    }
    .faq-toggle {
      color: var(--cyan);
      font-size: 1.5rem;
      font-weight: 300;
    }

    /* 标签组 */
    .tag-filter {
      background: transparent;
      border: 1px solid rgba(255,255,255,0.15);
      color: #ccd6e0;
      padding: 8px 18px;
      border-radius: 30px;
      transition: 0.2s;
      cursor: pointer;
      font-weight: 500;
    }
    .tag-filter.active {
      background: var(--cyan);
      border-color: var(--cyan);
      color: #0A0E27;
      font-weight: 600;
    }

    /* 案例瀑布 */
    .masonry-grid {
      column-count: 3;
      column-gap: 24px;
    }
    @media (max-width: 1024px) {
      .masonry-grid { column-count: 2; }
    }
    @media (max-width: 640px) {
      .masonry-grid { column-count: 1; }
    }
    .case-card {
      break-inside: avoid;
      margin-bottom: 24px;
      display: inline-block;
      width: 100%;
    }

    /* 响应式调整 */
    @media (max-width: 768px) {
      .container { padding-left: 20px; padding-right: 20px; }
      h1 { font-size: 2rem !important; }
      h2 { font-size: 1.75rem !important; }
    }