/* GridHub の紹介ページ（CONTRACTS §81）。看板屋の縄張り。はじめての方へ（index.html）とエンジニアの方へ（engineers.html）で共有する。
   5mm方眼ノートの見た目。字は手元にあるものだけ（外の字は読み込まない）。スマホの縦（幅 320px）でもはみ出さない。 */
:root {
  color-scheme: light;
  --paper: #fdfaf0;
  --card: #fffefa;
  --grid: rgba(143, 195, 218, 0.55);
  --margin-line: rgba(217, 74, 58, 0.45);
  --ink: #1d2b5c;
  --ink-soft: #45517a;
  --red: #d94a3a;
  --sticky: #fff3a3;
  --mark: rgba(255, 228, 92, 0.75);
  --tape: rgba(255, 243, 163, 0.72);
  --hand: 'Klee One', 'Klee', 'Hiragino Maru Gothic ProN', 'BIZ UDPGothic', 'Yu Gothic', 'Noto Sans JP', sans-serif;
  --ui: 'Hiragino Sans', 'Noto Sans JP', 'Yu Gothic UI', 'Meiryo', system-ui, sans-serif;
  --mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  --wobbly: 255px 14px 225px 14px / 14px 225px 14px 255px;
  --wobbly-2: 14px 225px 14px 255px / 255px 14px 225px 14px;
  --gutter: clamp(16px, 4vw, 40px);
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--ui);
  font-size: 16px;
  line-height: 1.8;
  background-color: var(--paper);
  /* 5mm 方眼。左に赤い余白の線 */
  background-image:
    linear-gradient(90deg, transparent calc(var(--gutter) - 10px), var(--margin-line) calc(var(--gutter) - 10px), var(--margin-line) calc(var(--gutter) - 8.5px), transparent calc(var(--gutter) - 8.5px)),
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 100% 100%, 5mm 5mm, 5mm 5mm;
  overflow-wrap: anywhere;
}

img { max-width: 100%; height: auto; }
a { color: var(--ink); text-decoration-thickness: 1.5px; text-underline-offset: 3px; }
a:hover { color: var(--red); }
a:focus-visible, .btn:focus-visible { outline: 3px solid var(--red); outline-offset: 3px; border-radius: 4px; }
code { font-family: var(--mono); font-size: 0.92em; background: rgba(255, 255, 255, 0.75); padding: 0 4px; border-radius: 4px; overflow-wrap: anywhere; }

.skip { position: absolute; left: -9999px; top: 8px; background: var(--card); padding: 6px 10px; border: 1.5px solid var(--ink); z-index: 10; }
.skip:focus { left: 8px; }

/* ---- 上の帯 ---- */
.top {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 20px;
  max-width: 1120px; margin: 0 auto; padding: 14px var(--gutter);
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--hand); font-weight: 700; font-size: 24px; text-decoration: none; }
.brand img { border-radius: 9px; box-shadow: 0 1px 0 rgba(29, 43, 92, 0.25); }
.top nav { display: flex; flex-wrap: wrap; gap: 4px 20px; font-size: 15px; }
.top nav a { text-decoration: none; border-bottom: 2px solid transparent; }
.top nav a:hover { border-bottom-color: var(--red); }

/* ---- 2ページのタブ（方眼ノートのインデックスシール）。いまのページのシールは手前に出て、下の線を隠す ---- */
.tabs {
  display: flex; align-items: flex-end; gap: 10px;
  max-width: 1120px; margin: 0 auto; padding: 2px var(--gutter) 0;
  background: linear-gradient(var(--ink), var(--ink)) bottom center / calc(100% - 2 * var(--gutter)) 2px no-repeat;
}
.tab {
  --tab: #fff3a3; --tab-pale: #fffbe0;
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: 44px; margin-bottom: 2px; padding: 6px 18px 6px 14px;
  font-family: var(--hand); font-weight: 700; font-size: 16px; line-height: 1.3; text-decoration: none; white-space: nowrap;
  background: var(--tab-pale); border: 2px solid var(--ink); border-bottom: 0; border-radius: 10px 10px 0 0;
  box-shadow: inset 0 -7px 8px -7px rgba(29, 43, 92, 0.3);
}
.tab + .tab { --tab: #cfe8f3; --tab-pale: #eef7fb; }
.tab::before { content: ''; position: absolute; inset: 4px 5px 0; border: 1.5px dashed rgba(29, 43, 92, 0.22); border-bottom: 0; border-radius: 7px 7px 0 0; pointer-events: none; }
.tab img { flex: none; width: 26px; height: 26px; }
.tab:hover { color: var(--ink); background: var(--tab); }
.tab[aria-current="page"] { z-index: 1; min-height: 50px; margin-bottom: 0; padding-bottom: 8px; background: var(--tab); box-shadow: none; }
.tab[aria-current="page"]::after { content: ''; position: absolute; left: 12px; right: 14px; bottom: 5px; height: 3px; border-radius: 2px; background: var(--red); opacity: 0.75; }
.tab:focus-visible { outline: 3px solid var(--red); outline-offset: 2px; }

main { max-width: 1120px; margin: 0 auto; padding: 0 var(--gutter); }

h1, h2, h3 { font-family: var(--hand); line-height: 1.45; font-weight: 700; }
.mark { background: linear-gradient(transparent 58%, var(--mark) 58%); padding: 0 2px; box-decoration-break: clone; -webkit-box-decoration-break: clone; }
/* 見出しは句のまとまりで折る（語の途中で折らない） */
.ph { display: inline-block; white-space: nowrap; }
h1 .ph.mark, h2 .ph.mark { padding: 0; }

/* ---- ファーストビュー: 文字は少なく、絵が主役 ---- */
.hero { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 24px 40px; align-items: center; padding: 18px 0 30px; }
.badge { display: inline-block; margin: 0; padding: 2px 12px; font-family: var(--hand); font-weight: 700; font-size: 14px; background: var(--card); border: 1.5px solid var(--ink); border-radius: 14px; }
h1 { font-size: clamp(30px, 3.3vw, 42px); line-height: 1.3; margin: 14px 0 14px; letter-spacing: 0.02em; }
.hero-lead { font-size: clamp(16px, 1.9vw, 18px); margin: 0; max-width: 30em; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 22px 0 0; }
.btn {
  display: inline-block; padding: 10px 22px; font-family: var(--hand); font-weight: 700; text-decoration: none;
  background: var(--card); border: 2px solid var(--ink); border-radius: var(--wobbly); box-shadow: 2px 3px 0 var(--ink);
}
.btn:hover { color: var(--ink); transform: translate(-1px, -1px); box-shadow: 3px 4px 0 var(--ink); }
.btn.primary { background: var(--sticky); }

/* 盤面の写真のまわりに、駒やモンスターを散らす（はみ出さないよう、舞台の中に置く） */
.stage { position: relative; padding: 44px 36px 40px; min-width: 0; }
.hero-photo { margin: 0; transform: rotate(-1.2deg); }
.deco { position: absolute; width: 60px; height: auto; filter: drop-shadow(0 3px 2px rgba(29, 43, 92, 0.18)); }
.d1 { left: 0; bottom: 0; width: 70px; transform: rotate(-6deg); }
.d2 { left: 22%; bottom: 2px; width: 50px; }
.d3 { right: 0; top: 0; width: 70px; transform: rotate(5deg); }
.d4 { right: 22%; top: 4px; width: 46px; transform: rotate(-10deg); }
.d5 { left: 0; top: 6px; width: 56px; transform: rotate(-4deg); }
.d6 { right: 0; bottom: 4px; width: 50px; transform: rotate(6deg); }
.d7 { left: 46%; top: 0; width: 42px; transform: rotate(8deg); }
.d8 { right: 38%; bottom: 0; width: 44px; transform: rotate(-8deg); }

/* 貼った写真（マスキングテープで留める） */
.photo { position: relative; margin: 0 auto 8px; padding: 10px 10px 6px; background: #fff; border: 1.3px solid rgba(29, 43, 92, 0.35); box-shadow: 0 6px 16px rgba(29, 43, 92, 0.16); }
.photo::before {
  content: ''; position: absolute; top: -12px; left: 50%; width: 120px; max-width: 40%; height: 26px; transform: translateX(-50%) rotate(-2deg);
  background: var(--tape); border-left: 1px dashed rgba(29, 43, 92, 0.15); border-right: 1px dashed rgba(29, 43, 92, 0.15);
}
.photo img { display: block; width: 100%; border: 1px solid rgba(29, 43, 92, 0.18); }
.photo figcaption { font-size: 14.5px; color: var(--ink-soft); padding: 8px 4px 4px; }
.photo figcaption b { display: block; font-family: var(--hand); color: var(--ink); font-size: 16px; }
.tilt-l { transform: rotate(-0.6deg); }
.tilt-r { transform: rotate(0.6deg); }
@media (prefers-reduced-motion: reduce) { .tilt-l, .tilt-r, .hero-photo, .deco { transform: none; } }

/* ---- ページ ---- */
.sheet { padding: 36px 0 8px; }
h2 { font-size: clamp(24px, 4vw, 34px); margin: 10px 0 18px; }
h3 { font-size: clamp(17px, 2.4vw, 20px); margin: 10px 0 6px; }
.small { font-size: 14px; color: var(--ink-soft); }

/* こんな悩み */
.pains { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); gap: 16px; }
.pain { display: flex; align-items: center; gap: 14px; background: var(--card); border: 1.6px solid var(--ink); border-radius: var(--wobbly); padding: 14px 16px; }
.pain:nth-child(even) { border-radius: var(--wobbly-2); }
.pain img { flex: none; width: 52px; height: 52px; }
.pain p { margin: 0; font-size: 16px; }
.bridge { margin: 22px 0 0; font-size: clamp(17px, 2.2vw, 20px); font-family: var(--hand); font-weight: 700; max-width: 38em; }

/* 特長 */
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); gap: 18px; }
.feature { background: var(--card); border: 1.6px solid var(--ink); border-radius: var(--wobbly); padding: 16px 18px 18px; min-width: 0; }
.feature:nth-child(even) { border-radius: var(--wobbly-2); }
.feature > img { width: 52px; height: 52px; }
.feature p { margin: 4px 0 0; font-size: 15.5px; }
.party { display: flex; gap: 2px; height: 52px; align-items: flex-end; }
.party img { width: 44px; height: 44px; }

/* 地図のつくり: 小さいものから大きいものへ（RPG の説明書の凡例） */
.map-lead { max-width: 44em; margin: 0 0 18px; }
.scale { display: flex; justify-content: space-between; max-width: 760px; margin: 0 0 10px; padding: 6px 12px; font-family: var(--hand); font-weight: 700; font-size: 14px; color: var(--ink-soft); background: linear-gradient(90deg, rgba(255, 228, 92, 0.25), rgba(217, 74, 58, 0.25)); border-radius: 999px; }
.scale span:not(:last-child)::after { content: ' →'; color: var(--red); }
.legend { list-style: none; margin: 0; padding: 0 0 0 22px; max-width: 760px; position: relative; display: grid; gap: 10px; }
.legend::before { content: ''; position: absolute; left: 6px; top: 10px; bottom: 10px; width: 6px; border-radius: 3px; background: linear-gradient(var(--sticky), var(--red)); }
.row { display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 4px 14px; align-items: start; background: var(--card); border: 1.6px solid var(--ink); border-radius: var(--wobbly); padding: 12px 16px; }
.row:nth-child(even) { border-radius: var(--wobbly-2); }
.row > img { justify-self: center; align-self: center; }
.row.s1 > img { width: 34px; height: 34px; }
.row.s2 > img { width: 42px; height: 42px; }
.row.s3 > img { width: 48px; height: 48px; }
.row.s4 > img { width: 56px; height: 56px; }
.row.s5 > img { width: 58px; height: 58px; }
.row.s6 > img { width: 70px; height: 70px; }
.row.s7 { background: rgba(255, 255, 255, 0.7); border-style: dashed; }
.row.s7 > img { width: 44px; height: 44px; }
.row h3 { margin: 0; }
.row p { margin: 2px 0 0; font-size: 15.5px; }
.kind { display: flex; flex-wrap: wrap; gap: 6px; margin: 2px 0 4px !important; }
.kind .dev { font-weight: 700; }
.kind .size { font-size: 13.5px; padding: 0 10px; border-radius: 999px; background: var(--sticky); color: var(--ink); }
.ex { font-size: 14px !important; color: var(--ink-soft); }
.nottest { display: flex; gap: 14px; align-items: flex-start; max-width: 760px; margin: 22px 0 0; padding: 14px 18px; background: var(--sticky); box-shadow: 0 8px 14px -8px rgba(29, 43, 92, 0.45); }
.nottest img { flex: none; width: 46px; height: 46px; }
.nottest h3 { margin: 0 0 4px; }
.nottest p { margin: 0; font-size: 15.5px; }

/* ゲームとして、ここが楽しい */
.funs { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 236px), 1fr)); gap: 16px; }
.fun { background: var(--card); border: 1.6px solid var(--ink); border-radius: var(--wobbly); padding: 14px 16px 16px; min-width: 0; }
.fun:nth-child(even) { border-radius: var(--wobbly-2); }
.fun img { width: 46px; height: 46px; }
.fun h3 { margin: 6px 0 4px; }
.fun p { margin: 0; font-size: 15px; }

/* 遊び方 */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); gap: 18px; }
.step { position: relative; background: var(--sticky); padding: 18px 18px 16px; box-shadow: 0 8px 14px -8px rgba(29, 43, 92, 0.45); min-width: 0; }
.step:nth-child(odd) { transform: rotate(-0.6deg); }
.step:nth-child(even) { transform: rotate(0.6deg); }
.step img { width: 60px; height: 60px; display: block; }
.step p { margin: 4px 0 0; font-size: 15.5px; }
.num { position: absolute; right: 14px; top: 12px; display: grid; place-items: center; width: 36px; height: 36px; border: 2px solid var(--ink); border-radius: 50%; background: var(--card); font-family: var(--hand); font-weight: 700; font-size: 19px; }
.callout { display: flex; align-items: center; gap: 12px; margin: 22px 0 0; padding: 12px 16px; background: var(--card); border: 2px dashed var(--red); border-radius: 10px; font-family: var(--hand); font-weight: 700; font-size: clamp(16px, 2vw, 18px); max-width: 640px; }
.callout img { flex: none; width: 40px; height: 40px; }

/* 画面 */
.shots { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); gap: 28px 22px; margin-top: 8px; }
.shots .photo { margin: 0; }

/* はじめる */
.starts { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr)); gap: 20px; align-items: start; }
.start-box { background: var(--card); border: 1.6px solid var(--ink); border-radius: var(--wobbly); padding: 14px 18px 16px; min-width: 0; }
.start-box h3 { display: flex; align-items: center; gap: 10px; margin-top: 4px; }
.start-box h3 img { width: 40px; height: 40px; }
.needs { margin: 4px 0 8px; font-size: 15px; }
.howto { margin: 0; padding-left: 1.3em; }
.howto li { margin: 6px 0; }
.howto p { margin: 0; }
pre {
  margin: 8px 0; padding: 12px 14px; max-width: 100%; overflow-x: auto;
  background: rgba(255, 255, 255, 0.86); border: 1.5px dashed var(--ink-soft); border-radius: 8px;
  font-family: var(--mono); font-size: 13.5px; line-height: 1.6;
}
pre code { background: none; padding: 0; overflow-wrap: normal; white-space: pre; }

/* 必要なもの（持ち物リスト。点線の箱は、無くても遊べるもの） */
.needs { max-width: 860px; margin: 0 0 22px; padding: 12px 18px 14px; background: var(--card); border: 1.6px solid var(--ink); border-radius: var(--wobbly); }
.needs h3 { display: flex; align-items: center; gap: 10px; margin: 2px 0 8px; }
.needs h3 img { width: 40px; height: 40px; }
.needs-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.needs-list > li { position: relative; padding-left: 30px; font-size: 15.5px; min-width: 0; }
.needs-list > li::before { content: ''; position: absolute; left: 2px; top: 0.4em; width: 15px; height: 15px; border: 2px solid var(--ink); border-radius: 3px; background: #fff; }
.needs-list > li.opt::before { border-style: dashed; border-color: var(--ink-soft); }
.needs-list p { margin: 0; }
.install { display: grid; grid-template-columns: max-content minmax(0, 1fr); align-items: center; gap: 0 12px; margin: 6px 0 0; }
.install dt { font-size: 14px; color: var(--ink-soft); }
.install dd { margin: 0; min-width: 0; }
.install pre { margin: 4px 0; }

/* ---- エンジニアの方へ ---- */
.hero-eng { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
.hero-eng h1 { font-size: clamp(28px, 2.9vw, 36px); }
.hero-eng .stage { padding-bottom: 160px; }
.nb { white-space: nowrap; }

/* 盤面の写真に重ねる、ターミナルのカード（gridhub step の出力の例） */
.shell {
  position: absolute; right: 0; bottom: 4px; z-index: 2; width: 88%; margin: 0; overflow: hidden;
  color: #f4f1e4; background: #1f2b52; border-radius: 10px; box-shadow: 0 12px 22px -6px rgba(29, 43, 92, 0.5); transform: rotate(1deg);
}
.shell figcaption { display: flex; align-items: center; gap: 8px; padding: 5px 12px; font-size: 13px; color: #c9cfe6; background: rgba(255, 255, 255, 0.08); }
.shell figcaption code { background: none; color: inherit; padding: 0; }
.dots { display: inline-flex; gap: 5px; }
.dots i { width: 9px; height: 9px; border-radius: 50%; background: #ff8b7b; }
.dots i + i { background: #ffd65c; }
.dots i + i + i { background: #8fe3a0; }
.shell pre { margin: 0; padding: 8px 14px 10px; color: inherit; background: none; border: 0; border-radius: 0; font-size: 12px; line-height: 1.55; }
.shell pre code { white-space: pre-wrap; overflow-wrap: anywhere; }
.shell .pr { color: #ffe45c; }
.shell .ok { color: #8fe3a0; }
.shell .ng { color: #ff9d8f; }
.shell .dim { color: #95a0c4; }
@media (prefers-reduced-motion: reduce) { .shell { transform: none; } }

/* 表（つかう技術・作戦・コマンド）。狭い画面では1行ずつのカードになる */
table { width: 100%; max-width: 1000px; border-collapse: separate; border-spacing: 0; font-size: 15px; background: var(--card); border: 1.6px solid var(--ink); border-radius: 12px; overflow: hidden; }
th, td { text-align: left; vertical-align: top; padding: 10px 14px; border-top: 1px dashed rgba(29, 43, 92, 0.3); }
thead th { border-top: 0; background: var(--sticky); font-family: var(--hand); font-size: 15px; }
tbody th { font-weight: 700; }
.stack tbody th { width: 13em; font-family: var(--hand); font-size: 16px; }
.stack td:last-child { width: 12.5em; }
.need { display: inline-block; padding: 0 10px; border-radius: 12px; font-size: 13.5px; line-height: 1.7; background: #e3f1f8; }
.need.must { background: var(--sticky); font-weight: 700; }
.tactics tbody th { width: 11.5em; }
.tactics td:last-child { width: 15em; }
.commands tbody th { width: 46%; font-weight: 400; }
.commands tbody th code { background: none; padding: 0; font-weight: 700; }

/* ゲームの言葉と、実際に起きること（左にゲームの言葉、右に実際の動き） */
.terms { margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 500px), 1fr)); gap: 12px; }
.terms .term { display: grid; grid-template-columns: 10.5em minmax(0, 1fr); gap: 4px 14px; align-items: start; background: var(--card); border: 1.6px solid var(--ink); border-radius: var(--wobbly); padding: 12px 16px; min-width: 0; }
.terms .term:nth-child(4n+2), .terms .term:nth-child(4n+3) { border-radius: var(--wobbly-2); }
.terms dt { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; font-family: var(--hand); font-weight: 700; font-size: 17px; line-height: 1.4; min-width: 0; }
.terms dt img { width: 36px; height: 36px; }
.terms .size { font-family: var(--ui); font-weight: 400; font-size: 13px; padding: 0 8px; border-radius: 999px; background: var(--sticky); }
.terms .size code { background: none; padding: 0; }
.terms dd { margin: 0; font-size: 15px; }

/* 例: メモアプリの地図 */
.lead { max-width: 44em; margin: 0 0 14px; }
.cast { list-style: none; margin: 0 0 16px; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: 10px; }
.cast li { display: flex; align-items: center; gap: 10px; padding: 8px 12px; background: var(--card); border: 1.5px solid var(--ink); border-radius: 12px; min-width: 0; }
.cast img { flex: none; width: 44px; height: 44px; }
.cast p { margin: 0; font-size: 14.5px; line-height: 1.55; }
.cast b { display: block; font-family: var(--hand); font-size: 17px; }

/* 道の図: 横に道（パソコン）、縦に道（スマホ）。中ボスと大ボスは、通る仲間の道をまたぐ */
.roads {
  display: grid; grid-template-columns: 6.5em repeat(9, minmax(0, 1fr)); grid-template-rows: repeat(4, 58px); gap: 6px 4px;
  max-width: 1000px; margin: 0 0 18px; padding: 14px 12px; background: rgba(255, 255, 255, 0.78); border: 1.6px dashed var(--ink-soft); border-radius: 12px;
}
.roads > * { grid-row: var(--who); }
.who { grid-column: 1; display: flex; align-items: center; gap: 6px; font-family: var(--hand); font-weight: 700; font-size: 15px; line-height: 1.2; }
.who img { flex: none; width: 32px; height: 32px; }
.lane { grid-column: 2 / -1; align-self: center; height: 12px; border-radius: 6px; }
.lane.yellow { background: rgba(255, 220, 70, 0.8); }
.lane.blue { background: rgba(120, 186, 222, 0.75); }
.lane.pink { background: rgba(240, 150, 186, 0.7); }
.lane.green { background: rgba(140, 206, 130, 0.75); }
.sq {
  grid-column: var(--at); z-index: 1; justify-self: center; align-self: center;
  display: inline-flex; flex-direction: column; align-items: center; justify-content: center; min-width: 46px; height: 46px; padding: 0 6px;
  font-family: var(--mono); font-weight: 700; font-size: 13.5px; line-height: 1.15; background: #fff; border: 2px solid var(--ink); border-radius: 6px;
}
.sq img { width: 20px; height: 20px; }
.sq.camp { border-style: dashed; font-family: var(--hand); }
.sq.stamp { border-color: #b08a1e; background: #fff8dc; }
.sq.gate, .sq.goal { align-self: stretch; justify-self: stretch; height: auto; margin: 2px 6px; background: #fff7e8; border-width: 2.5px; border-radius: 10px; }
.sq.gate img { width: 28px; height: 28px; }
.sq.goal { color: var(--red); background: #ffece6; border-color: var(--red); }
.sq.goal img { width: 32px; height: 32px; }
.bosses { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); gap: 14px; }
.boss { background: var(--card); border: 1.6px solid var(--ink); border-radius: var(--wobbly); padding: 10px 16px 14px; min-width: 0; }
.boss:nth-child(even) { border-radius: var(--wobbly-2); }
.boss h3 { display: flex; flex-wrap: wrap; align-items: center; gap: 0 8px; margin: 2px 0 4px; }
.boss h3 img { width: 40px; height: 40px; }
.boss p { margin: 0; font-size: 15px; }

/* エージェントの1ターン（付箋を順に貼る） */
.turn { list-style: none; counter-reset: turn; margin: 0 0 22px; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 190px), 1fr)); gap: 14px; }
.turn li { counter-increment: turn; position: relative; padding: 40px 14px 12px; background: var(--sticky); box-shadow: 0 8px 14px -8px rgba(29, 43, 92, 0.45); min-width: 0; }
.turn li:nth-child(odd) { transform: rotate(-0.5deg); }
.turn li:nth-child(even) { transform: rotate(0.5deg); }
.turn li::before { content: counter(turn); position: absolute; left: 12px; top: 8px; display: grid; place-items: center; width: 28px; height: 28px; border: 2px solid var(--ink); border-radius: 50%; background: var(--card); font-family: var(--hand); font-weight: 700; font-size: 16px; line-height: 1; }
.turn code, .turn .no-code { display: block; font-size: 14px; font-weight: 700; padding: 3px 6px; background: rgba(255, 255, 255, 0.85); }
.turn .no-code { font-family: var(--hand); background: none; padding: 3px 0; }
.turn p { margin: 6px 0 0; font-size: 14.5px; }
@media (prefers-reduced-motion: reduce) { .turn li { transform: none; } }

/* はじめる（エンジニアの方へ）: 番号つきの手順 */
.setup { list-style: none; counter-reset: setup; margin: 0 0 22px; padding: 0; display: grid; gap: 12px; max-width: 860px; }
.setup > li { counter-increment: setup; position: relative; padding: 10px 16px 12px 56px; background: var(--card); border: 1.6px solid var(--ink); border-radius: var(--wobbly); min-width: 0; }
.setup > li:nth-child(even) { border-radius: var(--wobbly-2); }
.setup > li::before { content: counter(setup); position: absolute; left: 14px; top: 12px; display: grid; place-items: center; width: 30px; height: 30px; border: 2px solid var(--ink); border-radius: 50%; background: var(--sticky); font-family: var(--hand); font-weight: 700; line-height: 1; }
.setup h3 { margin: 2px 0 4px; }
.setup p { margin: 4px 0 0; font-size: 15px; }
.start-box p { font-size: 15.5px; }

/* ---- 下の帯 ---- */
.bottom { max-width: 1120px; margin: 48px auto 0; padding: 18px var(--gutter) 40px; border-top: 2px solid var(--ink); font-size: 15px; }
.bottom p { margin: 0; }

@media (max-width: 860px) {
  .hero { grid-template-columns: minmax(0, 1fr); gap: 4px; padding-top: 14px; }
  .stage { padding: 34px 22px 32px; }
  .hero-eng .stage { padding-bottom: 28px; }
  .shell { position: relative; right: auto; bottom: auto; width: auto; margin: -34px 0 0 12%; }
}
@media (max-width: 720px) {
  /* 道の図を縦に（キャラクターが列、道は上から下へ） */
  .roads { grid-template-columns: repeat(4, minmax(0, 1fr)); grid-template-rows: auto repeat(9, 46px); gap: 4px 6px; padding: 10px 8px; }
  .roads > * { grid-row: auto; grid-column: var(--who); }
  .who { grid-row: 1; flex-direction: column; gap: 0; font-size: 14px; text-align: center; }
  .lane { grid-row: 2 / -1; justify-self: center; align-self: stretch; width: 12px; height: auto; }
  .sq { grid-row: var(--at); }
  .sq.gate, .sq.goal { flex-direction: row; gap: 4px; align-self: center; justify-self: stretch; height: 42px; margin: 0 4px; }
  .sq.gate img, .sq.goal img { width: 24px; height: 24px; }
  .terms .term { grid-template-columns: minmax(0, 1fr); }
  .terms dt { flex-direction: row; flex-wrap: wrap; align-items: center; gap: 2px 8px; }
}
@media (max-width: 640px) {
  /* 表を1行ずつのカードに */
  table, thead, tbody, tr, th, td { display: block; }
  table { border: 0; border-radius: 0; background: none; overflow: visible; }
  thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
  tbody tr { margin: 0 0 10px; padding: 10px 14px; background: var(--card); border: 1.6px solid var(--ink); border-radius: 12px; }
  th, td { padding: 0; border: 0; width: auto !important; }
  td { margin-top: 4px; }
  td[data-label]::before { content: attr(data-label) ": "; font-weight: 700; }
}
@media (max-width: 520px) {
  body { font-size: 15.5px; }
  .top { padding-top: 8px; padding-bottom: 4px; gap: 2px 16px; }
  .brand { font-size: 21px; }
  .brand img { width: 34px; height: 34px; }
  .top nav { gap: 2px 16px; font-size: 14px; }
  .actions { margin-top: 16px; }
  .stage { padding: 30px 14px 30px; }
  .deco { width: 40px; }
  .d1, .d3 { width: 48px; }
  .d2, .d4, .d5, .d6, .d7, .d8 { width: 34px; }
  .photo { padding: 6px 6px 4px; }
  .tilt-l, .tilt-r, .step { transform: none !important; }
  .legend { padding-left: 16px; }
  .legend::before { left: 3px; width: 5px; }
  .row { grid-template-columns: 48px minmax(0, 1fr); padding: 10px 12px; gap: 4px 10px; }
  .row > img { max-width: 48px; }
  .scale { font-size: 13px; padding: 6px 10px; }
  .scale span:not(:last-child)::after { content: ''; }
  .tabs { gap: 6px; }
  .tab { flex: 1 1 0; min-width: 0; gap: 4px; padding: 6px 6px; font-size: 15px; }
  .tab img { width: 22px; height: 22px; }
  .install { grid-template-columns: minmax(0, 1fr); }
  .shell { margin-left: 4px; }
  .setup > li { padding: 46px 14px 12px; }
  .setup > li::before { top: 10px; }
}
@media (max-width: 360px) {
  .tab img { display: none; }
}