:root {
        --bg: #FDF7E6;
        --card: #FFFFFF;
        --ink: #3A2E14;
        --sub: #7A6B48;
        --line: #F0E4C4;
        --primary: #A35117;
        --primary-soft: #FAE7A8;
        --primary-soft-border: #E9D289;
        --green: #5F6B38;
        --green-soft: #EDF0DE;
        --green-soft-border: #D5DCBB;
        --red: #B3261E;
        --red-soft: #FBE4E1;
        --red-soft-border: #EFC0B8;
      }

      @font-face {
        font-family: "M PLUS Rounded 1c";
        font-style: normal;
        font-weight: 400;
        font-display: swap;
        src: url("./fonts/m-plus-rounded-1c-japanese-400-normal.woff2") format("woff2");
      }

      * { box-sizing: border-box; }

      body {
        margin: 0;
        background: var(--bg);
        color: var(--ink);
        font-family: "M PLUS Rounded 1c", "Hiragino Maru Gothic ProN", "Yu Gothic",
          -apple-system, BlinkMacSystemFont, "Hiragino Sans", Meiryo, sans-serif;
        line-height: 1.8;
      }

      main {
        width: min(100% - 40px, 680px);
        margin: 0 auto;
        padding: 40px 0 56px;
      }

      header {
        margin-bottom: 24px;
        padding: 24px;
        border: 1px solid var(--primary-soft-border);
        border-radius: 20px;
        background: var(--primary-soft);
      }

      h1, h2 { margin: 0; font-weight: 600; line-height: 1.45; }
      h1 { font-size: clamp(1.5rem, 6vw, 2rem); }
      h2 { font-size: 1.1rem; }

      .intro, .dates, footer { color: var(--sub); }
      .intro { margin: 12px 0 0; }
      .dates { margin: 12px 0 0; font-size: 0.875rem; }

      section {
        margin-top: 16px;
        padding: 24px;
        border: 1px solid var(--line);
        border-radius: 20px;
        background: var(--card);
      }

      section p { margin: 12px 0 0; }
      a { color: var(--ink); font-weight: 500; text-underline-offset: 0.18em; }

      footer {
        margin-top: 24px;
        font-size: 0.875rem;
      }

      @media (max-width: 480px) {
        main { width: min(100% - 32px, 680px); padding-top: 24px; }
        header, section { padding: 20px; border-radius: 16px; }
      }