:root {
  --bg: #fff8ee;
  --card: #ffffff;
  --ink: #3a2f2a;
  --sub: #7a6a60;
  --line: #f0e0cc;
  --accent: #ff8a3d;
  --accent-ink: #ffffff;
  --shadow: 0 4px 0 #f0dcc4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1e1a24;
    --card: #2a2433;
    --ink: #f3ecff;
    --sub: #b6a9c9;
    --line: #3d3448;
    --shadow: 0 4px 0 #15111a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'M PLUS Rounded 1c', system-ui, sans-serif;
  line-height: 1.8;
}
a { color: inherit; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }

.site-head { background: var(--card); border-bottom: 2px solid var(--line); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 10px; padding-bottom: 10px; flex-wrap: wrap; }
.logo { font-weight: 800; font-size: 1.25rem; text-decoration: none; }
.logo span { color: var(--accent); }
.site-head nav a { text-decoration: none; margin-left: 14px; font-weight: 700; color: var(--sub); }
.site-head nav a:hover { color: var(--accent); }

.hero { text-align: center; padding: 40px 0 24px; }
.hero h1 { font-size: clamp(1.6rem, 5vw, 2.4rem); margin: 0 0 6px; }
.hero p { color: var(--sub); margin: 0; }

.section-title { font-size: 1.2rem; margin: 32px 0 12px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.card {
  display: flex; flex-direction: column; text-decoration: none;
  background: var(--card); border: 2px solid var(--line); border-radius: 18px;
  box-shadow: var(--shadow); overflow: hidden; transition: transform .15s;
}
.card:hover { transform: translateY(-3px); }
.card .thumb { height: 120px; display: grid; place-items: center; font-size: 64px; color: #fff; }
.card .body { padding: 12px 16px 16px; }
.card h3 { margin: 0 0 4px; font-size: 1.1rem; }
.card p { margin: 0; color: var(--sub); font-size: .92rem; }
.tag { display: inline-block; font-size: .75rem; font-weight: 800; padding: 1px 10px; border-radius: 99px; background: var(--line); color: var(--sub); margin-bottom: 6px; }

.game-hero { border-radius: 22px; color: #fff; text-align: center; padding: 32px 16px; margin-top: 24px; }
.game-hero .emoji { font-size: 72px; line-height: 1; }
.game-hero img { max-width: 100%; max-height: 220px; }
.game-hero h1 { margin: 8px 0 4px; font-size: clamp(1.5rem, 5vw, 2.2rem); }
.btn-play {
  display: inline-block; margin-top: 14px; padding: 12px 40px; border-radius: 99px;
  background: #fff; color: #333; font-weight: 800; font-size: 1.2rem; text-decoration: none;
  box-shadow: 0 4px 0 rgba(0,0,0,.2);
}
.btn-play:hover { transform: translateY(-2px); }
.panel { background: var(--card); border: 2px solid var(--line); border-radius: 18px; padding: 16px 20px; margin-top: 16px; }
.panel h2 { font-size: 1.1rem; margin: 0 0 8px; }
.panel ol { margin: 0; padding-left: 1.4em; }
.note { color: var(--sub); font-size: .9rem; }

.choice-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 32px; }
.choice { display: flex; flex-direction: column; gap: 3px; padding: 18px 20px; color: #fff; background: #5d45c7; border-radius: 18px; text-decoration: none; box-shadow: var(--shadow); }
.choice.school { background: #167356; }
.choice strong { font-size: 1.08rem; }
.choice span { font-size: .9rem; opacity: .9; }
.key-row { display: flex; gap: 7px; flex-wrap: wrap; margin: 18px 0; }
.key-row span { width: 18px; }
kbd { min-width: 42px; padding: 8px; text-align: center; font: 800 1rem system-ui; background: var(--card); border: 2px solid var(--line); border-bottom-width: 5px; border-radius: 8px; }
.text-cta { display: inline-block; padding: 10px 18px; color: #fff; background: var(--accent); border-radius: 99px; font-weight: 800; text-decoration: none; }
.school-head { margin-top: 28px; padding: 28px; color: #fff; background: linear-gradient(135deg,#12664b,#238a67); border-radius: 22px; }
.school-head span { font-weight: 800; }
.school-head h1 { margin: 5px 0; font-size: clamp(1.55rem,5vw,2.2rem); }
.school-head p { margin: 0; }
.school-note { margin: 16px 0 24px; padding: 14px 18px; background: var(--card); border: 2px solid var(--line); border-radius: 14px; }
.school-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(200px,1fr)); gap: 14px; }
.school-game { display: grid; grid-template-columns: 64px 1fr; align-items: center; gap: 2px 12px; padding: 12px; background: var(--card); border: 2px solid var(--line); border-radius: 16px; text-decoration: none; }
.school-game > span { grid-row: 1 / 3; display: grid; place-items: center; width: 64px; height: 64px; border-radius: 12px; font-size: 34px; }
.school-game small { color: var(--sub); }

.ad { margin: 24px auto; min-height: 100px; text-align: center; }
.ad:empty { display: none; }
.ad-label { font-size: .7rem; color: var(--sub); }

.doc h1 { font-size: 1.6rem; margin-top: 32px; }
.doc h2 { font-size: 1.15rem; margin-top: 28px; border-left: 6px solid var(--accent); padding-left: 10px; }

.site-foot { margin-top: 48px; padding: 24px 0; border-top: 2px solid var(--line); color: var(--sub); font-size: .85rem; text-align: center; }
.site-foot a { margin: 0 8px; }

@media (max-width: 680px) {
  .site-head nav { display: flex; width: 100%; gap: 12px; overflow-x: auto; white-space: nowrap; }
  .site-head nav a { margin-left: 0; }
  .choice-row { grid-template-columns: 1fr; }
}

.crumb { margin: 24px 0 -16px; font-size: .85rem; color: var(--sub); }
.crumb a { text-decoration: none; }
.doc h3 { font-size: 1.02rem; margin-top: 20px; }
.doc code { padding: 1px 6px; background: var(--line); border-radius: 6px; font-weight: 700; }
.table-scroll { overflow-x: auto; margin: 12px 0; }
.doc table { border-collapse: collapse; background: var(--card); min-width: 100%; }
.doc th, .doc td { border: 2px solid var(--line); padding: 6px 10px; text-align: left; white-space: nowrap; }
.doc th { background: var(--line); }
.doc table.fingers td { white-space: normal; }
.doc kbd { display: inline-block; min-width: 0; padding: 0 6px; font-size: .9rem; border-bottom-width: 3px; }
.doc .key-row kbd { min-width: 42px; padding: 8px; font-size: 1rem; border-bottom-width: 5px; }
.article-list { list-style: none; padding: 0; display: grid; gap: 8px; }
.article-list a { display: block; padding: 12px 16px; background: var(--card); border: 2px solid var(--line); border-radius: 14px; font-weight: 800; text-decoration: none; }
.article-list a:hover { border-color: var(--accent); }