/* roulang page: index */
:root {
      --primary: #059669;
      --primary-dark: #0F5132;
      --accent: #00F59B;
      --bg-light: #F8FAFC;
      --bg-alt: #F1F5F9;
      --text-main: #0F172A;
      --text-muted: #475569;
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    }
    body {
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.75;
    }
    .custom-card {
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    }
    .custom-card:hover {
      transform: translateY(-3px);
    }
    .btn-interactive {
      transition: all 0.2s ease;
    }
    .btn-interactive:hover {
      transform: translateY(-2px);
    }
    .btn-interactive:active {
      transform: translateY(0);
    }
    .tactical-board {
      background-size: 20px 20px;
      background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    }