@charset "utf-8";

    :root {
      --banner-bg: rgba(225,225,225,0.90);
      --banner-fg: #ff0000;
      --transition-ms: 300ms;
      --btn-bg: #ff0000;
      --btn-bg-hover: #cc0000;
      --btn-text: #ffffff;
      --btn-radius: 10px;
      --banner-padding-y: 1px;
      --banner-padding-x: 14px;
    }

    body {
      margin: 0;
      /*font-family: system-ui, -apple-system, "Segoe UI", Roboto,
        "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo",
        sans-serif;*/
    }

    main { padding: 24px; }

    /* —— 下部バナー —— */
    .bottom-banner {
      position: fixed;
      left: 0; right: 0; bottom: 0;
      z-index: 9999;
      background: var(--banner-bg);
      color: var(--banner-fg);
      padding: var(--banner-padding-y) var(--banner-padding-x);
      box-sizing: border-box;
      transform: translateY(100%);
      transition: transform var(--transition-ms) ease;
      text-align: center;
    }
    .bottom-banner.is-visible { transform: translateY(0%); }

    .banner-header {
      display: flex;
      justify-content: center;
      align-items: center;
      margin-bottom: 6px;
      min-height: 28px;
    }
    .banner-title { font-weight: 700; }

    .banner-close {
      position: absolute;
      right: 10px;
      bottom: 10px;

      background: transparent;
      color: var(--banner-fg);
      border: none;
      border-radius: 0;

      min-width: 32px;
      height: 32px;
      padding: 0 6px;
      font-size: 18px;
      line-height: 1;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;

      text-decoration: none;
    }
    .banner-close:hover,
    .banner-close:focus {
      color: #cc0000;
      outline: none;
      text-decoration: none;
    }

    .banner-content p { margin: 0 0 6px; }

    .banner-links {
      display: flex;
      justify-content: center;
      gap: 10px;
      margin-top: 6px;
      flex-wrap: wrap;
    }
    .banner-links a.banner-link {
      display: inline-block;
      padding: 8px 16px;
      border: 2px solid var(--btn-bg);
      border-radius: var(--btn-radius);
      background: var(--btn-bg);
      color: var(--btn-text);
      text-decoration: none;
      font-weight: 700;
      line-height: 1;
      cursor: pointer;
    }
    .banner-links a.banner-link:hover,
    .banner-links a.banner-link:focus {
      background: var(--btn-bg-hover);
      border-color: var(--btn-bg-hover);
      color: var(--btn-text);
    }
    .banner-links a.banner-link:focus-visible {
      outline: 3px solid #990000;
      outline-offset: 2px;
    }

    .reopen-button {
      position: fixed;
      right: 0;
      bottom: 0;
      z-index: 10000;
      display: none;

      padding: 5px 10px;
      background: var(--btn-bg);
      color: #fff;
      border: 2px solid var(--btn-bg);
      border-radius: 0;

      font-weight: 700;
      cursor: pointer;
      box-shadow: none;
      text-decoration: none;
    }
    .reopen-button.is-visible { display: inline-block; }

    @media (prefers-reduced-motion: reduce) {
      .bottom-banner { transition: none; }
    }