/* ================================
   Base (PC向けの既定スタイル)
   ================================ */
body {
  margin: 0;
  padding: 0;
  font-size: 14px;
  line-height: 1.6;
  font-family: system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  background-color: #BF1F2F;
  color: #000;
}

#main {
  font-size: 1em;
  background: #FFFFFF;
  margin: 20px auto;
  width: clamp(85%, 90%, 1800px);   /* PCで広く使う */
  padding: 24px 40px;
  box-shadow: 0 0 10px rgba(0,0,0,.2);
  border-radius: 6px;
}

h1 { margin: 0 0 16px; font-size: 1.8em; color: #cc9966; }
.nbh1 { font-weight: normal; font-size: smaller; }
.cmnt { font-size: x-small; color: #aaa; }

a { text-decoration: none; }
a:link    { color: #6699cc; }    /* 未訪問 */
a:visited { color: #cc6600; }    /* 訪問済み */
a:hover   { color: #cc0000; text-decoration: underline; }
a.program:link { color: #000080; }

#top {
  position: relative;
  height: 420px;                 /* PCではヒーロー領域を確保 */
  background-color: #000;
  color: #fff;
  padding: 20px 40px;
  overflow: hidden;
}

#info { width: clamp(800px, 80%, 1400px); margin: 20px auto; padding: 0; }
#usage { margin: 10px 0 20px 1em; font-size: .9em; color: #aaa; }

img.photo {
  position: absolute;
  top: 180px; right: 20px;
  width: min(65vw, 1100px);
  height: auto;
  border-radius: 4px;
}

#program {
  width: 100%;
  border-collapse: collapse;
  margin: 20px auto;
  background: #fff;
}
#program th, #program td { padding: 8px 12px; }
.no_border { border-style: none; }
.td_border { font-weight: bold; border-bottom: 2px solid #4b2060; border-top: 1px solid #4b2060; }
.td_uborder { border-bottom: 1px solid #4b2060; }
.right { text-align: right; }

.bottom1 { position: absolute; top: 92px; right: 15px; }
.bottom2 { text-align: right; padding-right: 12px; }
.padding { padding: 10px 12px; }

/* テーブルがはみ出す画面で横スクロール可能にする（HTML変更不要） */
#program { display: block; overflow-x: auto; }

/* ================================
   Breakpoint 1: <= 1200px (ラージ・タブレット/小さめPC)
   ================================ */
@media (max-width: 1200px) {
  #main {
    width: clamp(90%, 96%, 1200px);
    padding: 20px 28px;
  }
  h1 { font-size: 1.6em; }
  #info { width: clamp(680px, 88%, 1080px); }
  #top { padding: 18px 28px; height: 380px; }
  img.photo { top: 200px; right: 20px; width: min(70vw, 900px); }
}

/* ================================
   Breakpoint 2: <= 900px (タブレット縦/大きめスマホ)
   ================================ */
@media (max-width: 900px) {
  body { font-size: 15px; }

  #main {
    width: 96%;
    margin: 16px auto;
    padding: 18px 20px;
    box-shadow: 0 0 6px rgba(0,0,0,.15);
  }

  /* ヒーロー領域を可変化。画像はフローに載せて崩れ防止 */
  #top {
    height: auto;
    padding: 16px 20px;
  }
  img.photo {
    position: static;
    display: block;
    width: 100%;
    max-width: none;
    height: auto;
    margin-top: 12px;
  }

  #info { width: 100%; margin: 12px 0; padding: 0 2px; }
  #usage { font-size: .95em; margin-left: 0; }

  #program { margin: 12px 0; }
  #program th, #program td { padding: 6px 10px; }

  /* 絶対配置要素はスタティック化して重なり回避 */
  .bottom1 { position: static; margin-top: 8px; text-align: right; }
}

/* ================================
   Breakpoint 3: <= 600px (スマホ)
   ================================ */
@media (max-width: 600px) {
  body { font-size: 16px; }

  #main {
    width: 96%;
    margin: 12px auto;
    padding: 14px;
    border-radius: 4px;
  }

  h1 { font-size: 1.35em; margin-bottom: 12px; }
  #usage { font-size: .95em; }
  #program th, #program td { padding: 6px 8px; }

  /* 余白調整で視線移動を短く */
  #top { padding: 12px 14px; }
}

/* ================================
   Breakpoint 4: <= 360px (極小端末)
   ================================ */
@media (max-width: 360px) {
  body { font-size: 15px; }
  #main { padding: 12px; }
}

/* アクセシビリティ: 動きを好まない設定なら余計なアニメを抑制（使っていれば） */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}