@font-face {
      font-family: 'AlimamaYuan';
      src: url('/page/resource/fonts/AlimamaYuan.ttf') format('truetype'),
      font-display: swap;ttf
    }

    :root {
      --theme: #2b7a78;
      --theme-light: #3fc1c9;
      --bg: #f4f7f8;
      --radius: 18px;
      --duration: 1s;
    }

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

    body {
      font-family: 'AlimamaYuan', 'PingFang SC', sans-serif;
      background: var(--bg);
      color: #333;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      opacity: 0;
      animation: fadeIn var(--duration) ease forwards;
      padding-bottom: 80px; /* 预留版权条高度 */
    }

    @keyframes fadeIn {
      to { opacity: 1; }
    }

    /* 主卡片 */
    .card {
      background: #fff;
      max-width: 800px;
      width: 90%;
      margin: 6vh auto 10vh;
      border-radius: var(--radius);
      box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
      padding: 40px 50px 60px;
      transform: translateY(40px);
      opacity: 0;
      animation: floatIn var(--duration) ease 0.2s forwards;
    }

    @keyframes floatIn {
      to {
        transform: translateY(0);
        opacity: 1;
      }
    }

    h1 {
      text-align: center;
      font-size: 2.2em;
      margin-bottom: 30px;
      color: var(--theme);
      letter-spacing: 1px;
    }

    h2 {
      margin-top: 40px;
      margin-bottom: 12px;
      font-size: 1.5em;
      color: var(--theme-light);
    }

    h3 {
      margin-top: 24px;
      margin-bottom: 8px;
      font-size: 1.2em;
      color: var(--theme);
    }

    p, ul {
      line-height: 1.8;
      margin-bottom: 16px;
    }

    ul {
      padding-left: 24px;
    }

    /* 固定底部版权条 */
    .copyright-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: #fff;
      border-top-left-radius: var(--radius);
      border-top-right-radius: var(--radius);
      box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
      text-align: center;
      padding: 16px 0;
      font-size: 0.9em;
      color: #888;
      z-index: 999;
    }