* { box-sizing: border-box; }
:root { color-scheme: dark; font-family: system-ui, -apple-system, sans-serif; color: #f7e8c3; background: #111827; }
body { margin: 0; font-size: 16px; line-height: 1.65; background: radial-gradient(ellipse at 50% 0, #38475d77, transparent 60%), #111827; }
header, main, footer { width: min(980px, calc(100% - 24px)); margin-inline: auto; }
header { display: flex; justify-content: space-between; align-items: center; padding-block: 16px; font-size: 14px; }
a { color: #bcdde7; text-underline-offset: 4px; }
header span, .eyebrow { color: #edb65d; font-weight: 700; letter-spacing: .1em; }
h1 { font-size: clamp(26px, 6vw, 40px); margin: 8px 0 16px; line-height: 1.3; }
h2 { font-size: 22px; margin: 8px 0; }
p { margin: 10px 0; }
.lead { color: #d4dce6; }
.eyebrow, .note { font-size: 14px; }
.note, .instructions { color: #c6d2df; }
button { font: inherit; font-size: 16px; font-weight: 700; min-height: 46px; padding: 10px 16px; border: 1px solid #7294a7; border-radius: 8px; color: #f7e8c3; background: #263449; cursor: pointer; }
button:hover:not(:disabled) { background: #38475d; }
button:disabled { opacity: .5; cursor: default; }
button.primary { background: #edb65d; border-color: #edb65d; color: #1a1220; }
:focus-visible { outline: 3px solid #80cbd7; outline-offset: 3px; }
[hidden] { display: none !important; }
#levels { display: grid; gap: 18px; }
.world { border-top: 1px solid #7294a7; padding-top: 12px; }
.world h3 { margin: 0 0 8px; font-size: 18px; }
.world-buttons { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.world-buttons button { padding: 8px 4px; font-size: 14px; }
.world-buttons small { display: block; font-size: 12px; }
/* HUD は画面の上端1行。順番は 面番号・姿・残機・米俵・能力・時間・お札。 */
.hud { display: flex; align-items: center; white-space: nowrap; gap: 4px; background: #263449; padding: 4px 8px; font-size: 12px; line-height: 1.4; font-variant-numeric: tabular-nums; }
.hud > * { flex: 0 0 auto; }
.hud-level { min-width: 32px; font-weight: 700; color: #edb65d; }
.hud-form { min-width: 62px; }
.hud-lives { min-width: 40px; }
.hud-rice { min-width: 52px; }
.hud-time { min-width: 52px; margin-left: auto; }
.hud-ability { display: inline-flex; align-items: center; gap: 4px; min-width: 96px; padding: 1px 3px; border: 1px solid transparent; border-radius: 4px; }
.hud-ability[data-blink="on"] { animation: hud-blink .1s steps(1) infinite alternate; }
@keyframes hud-blink { from { border-color: #edb65d; } to { border-color: transparent; } }
#ability-icon { width: 16px; height: 16px; image-rendering: pixelated; }
.hud-seals { display: inline-flex; gap: 4px; }
.hud-seals b { display: inline-grid; place-items: center; width: 14px; height: 14px; border: 1px solid #7294a7; border-radius: 3px; font-size: 10px; font-weight: 700; }
.hud-seals b[data-on="maybe"] { color: #c6d2df; border-style: dashed; }
.hud-seals b[data-on="on"] { background: #edb65d; border-color: #edb65d; color: #1a1220; }
.hud-seals b[data-on="off"] { opacity: .45; text-decoration: line-through; }
.stage { position: relative; width: max-content; max-width: 100%; margin-inline: auto; background: #111827; }
.screen { position: relative; }
/* 面の頭に出す1行。地面を隠さないよう、空のある上端に重ねる。 */
.lesson { position: absolute; left: 0; right: 0; top: 0; margin: 0; padding: 6px 10px; background: #1a1220e0; border-bottom: 1px solid #7294a7; font-size: 14px; line-height: 1.5; text-align: center; }
.seal-list { list-style: none; margin: 10px 0; padding: 0; font-size: 14px; line-height: 1.7; text-align: left; }
.seal-list li { margin: 2px 0; }
.seal-list li[data-on="off"] { color: #c6d2df; }
.seal-row { letter-spacing: .12em; color: #edb65d; }
canvas { display: block; image-rendering: pixelated; touch-action: none; }
.overlay { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; background: #111827ee; text-align: center; overflow: auto; padding: 12px; line-height: 1.6; }
.overlay > p { margin: 2px 0; }
.overlay h2 { font-size: 20px; }
.overlay .toolbar { flex-wrap: wrap; justify-content: center; }
.toolbar { display: flex; gap: 12px; margin-top: 12px; }
.instructions { border-top: 1px solid #38475d; margin-top: 24px; padding-top: 12px; font-size: 14px; }
.instructions h2 { font-size: 18px; }
footer { padding-block: 20px 100px; font-size: 14px; }
header a, footer > a { display: inline-flex; align-items: center; min-height: 44px; }
#touch { position: fixed; bottom: 0; left: 0; right: 0; display: flex; gap: 12px; padding: 10px max(12px, env(safe-area-inset-right)) max(10px, env(safe-area-inset-bottom)); background: #111827f5; border-top: 1px solid #7294a7; z-index: 5; }
#touch button { min-width: 64px; min-height: 54px; touch-action: none; user-select: none; }
#touch button:last-child { margin-left: auto; min-width: 112px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.share, .share__label, .share__button, .share__note, .share__said { font-size: 14px; }
@media (pointer: fine) { #touch { max-width: 640px; margin-inline: auto; } }
@media (max-width: 343px) { header, main, footer { width: 320px; } }
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } .hud-ability[data-blink="on"] { animation: none; border-color: #edb65d; } }
/* 狭い画面ではHUDを2段に折る。1段目＝面番号・姿・残機・米俵、2段目＝能力・時間・お札（右寄せ）。右端で見切れないように */
@media (max-width: 420px) { .hud { font-size: 11px; gap: 3px; row-gap: 2px; flex-wrap: wrap; } .hud-form { min-width: 52px; } .hud-rice { flex: 1 0 52px; } .hud-ability { min-width: 84px; order: 1; } .hud-time { order: 2; margin-left: 0; } .hud-seals { order: 3; margin-left: auto; } }
/* 指で操作する端末にはキーボードの説明を出さず、下の3ボタンの説明に置き換える */
@media (hover: none) and (pointer: coarse) { .only-keys { display: none; } }
@media not ((hover: none) and (pointer: coarse)) { .only-touch { display: none; } }

.hero-art { display: block; width: 100%; max-width: 420px; height: auto; margin-inline: auto; }