*{box-sizing:border-box}:root{--paper: #e9dcc0;--card: #f9f1dd;--ink: #2a1f1a;--ink-soft: #6b5a48;--line: #2a1f1a;--accent: #2f6fb3;--accent-ink: #f9f1dd;--gold: #e3b94b;--bad: #b03a2e;--water: #3f8fd6;--water-2: #5aa6e6;--water-dark: #2c6fb0;--grass: #6db34f;--grass-2: #8ccb62;--soil: #b8874a}html{touch-action:manipulation;-webkit-tap-highlight-color:transparent}body{margin:0;font-family:DotGothic16,Hiragino Kaku Gothic ProN,Noto Sans JP,sans-serif;color:var(--ink);background:var(--paper);background-image:radial-gradient(#dccdaa 1px,transparent 1px);background-size:6px 6px;min-height:100vh;-webkit-font-smoothing:none}button{font-family:inherit;color:var(--ink);background:var(--card);border:2px solid var(--line);border-radius:0;box-shadow:3px 3px 0 var(--line);padding:9px 16px;font-size:15px;cursor:pointer}button:hover:not(:disabled){background:#fff8e6}button:active:not(:disabled){transform:translate(2px,2px);box-shadow:1px 1px 0 var(--line)}.key-hint{white-space:nowrap}.only-touch{display:none}button:disabled{cursor:default;opacity:.45;box-shadow:3px 3px 0 var(--line)}button.primary{background:var(--accent);color:var(--accent-ink)}button.primary:hover:not(:disabled){background:#3a7fc8}.app{max-width:900px;margin:0 auto;padding:24px 16px 48px}.header{text-align:center;margin-bottom:14px}.header h1{margin:0;font-size:40px;letter-spacing:.2em;text-shadow:3px 3px 0 #cdb98f}.subtitle{margin:4px 0 0;color:var(--ink-soft);font-size:13px;letter-spacing:.2em}.title-scene{display:flex;align-items:stretch;height:120px;border:3px solid var(--line);box-shadow:5px 5px 0 var(--line);margin:0 auto 26px;max-width:620px;overflow:hidden}.title-bank{flex:0 0 24%;background:linear-gradient(180deg,var(--grass-2) 0 8px,var(--grass) 8px 100%);display:flex;align-items:flex-end;justify-content:center;gap:6px;padding-bottom:8px}.title-river{flex:1;position:relative;background:repeating-linear-gradient(180deg,var(--water-2) 0 6px,var(--water) 6px 18px);overflow:hidden}.title-river:after,.river:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='72' height='48'><g fill='white' fill-opacity='0.38'><rect x='8' y='4' width='16' height='4'/><rect x='44' y='16' width='12' height='4'/><rect x='20' y='30' width='12' height='4'/><rect x='56' y='40' width='16' height='4'/><rect x='0' y='40' width='4' height='4'/></g></svg>");background-size:72px 48px;background-repeat:repeat;image-rendering:pixelated;animation:flow 1.9s steps(12) infinite;pointer-events:none}@keyframes flow{0%{background-position:0 0}to{background-position:0 48px}}.breath .fr-b,body.exhale .breath .fr-a{display:none}body.exhale .breath .fr-b{display:inline}.title-boat{position:absolute;z-index:1;left:50%;top:50%;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;margin-top:calc(-1 * var(--boat-dy, 2px))}body.boat-low .title-boat{margin-top:var(--boat-dy, 2px)}.tune{position:fixed;right:12px;bottom:12px;z-index:50;width:250px;background:var(--card);border:2px solid var(--line);box-shadow:4px 4px 0 var(--line);padding:10px 12px 12px;font-size:13px}.tune-title{color:var(--ink-soft);letter-spacing:.2em;margin-bottom:8px}.tune-row{display:block;margin-bottom:8px}.tune-label{display:flex;justify-content:space-between;gap:8px;margin-bottom:2px;white-space:nowrap}.tune-val{color:var(--ink-soft);text-align:right}.tune input[type=range]{width:100%;margin:0;accent-color:var(--accent)}.tune-code{display:block;font-family:inherit;font-size:13px;color:var(--ink-soft);background:var(--paper);padding:4px 6px;margin:4px 0 8px;word-break:break-all;-webkit-user-select:all;user-select:all}.tune-reset{font-family:inherit;font-size:13px;padding:4px 10px;border:2px solid var(--line);background:var(--card);color:var(--ink);cursor:pointer}.title{--title-col: 440px}.mode-btns{display:flex;flex-direction:column;align-items:stretch;gap:6px;max-width:var(--title-col);margin:0 auto 22px}.mode-btns button{font-size:18px;padding:12px 16px}.mode-note{margin:0 0 10px;font-size:13px;color:var(--ink-soft);text-align:center}.rules{box-sizing:border-box;max-width:var(--title-col);margin:0 auto 22px;padding:12px 16px 12px 32px;background:var(--card);border:2px solid var(--line);box-shadow:4px 4px 0 var(--line);font-size:14px;line-height:1.9}.records{box-sizing:border-box;max-width:var(--title-col);margin:0 auto;background:var(--card);border:2px solid var(--line);box-shadow:4px 4px 0 var(--line);padding:10px 16px 12px}.records-title{font-size:14px;color:var(--ink-soft);margin-bottom:6px;letter-spacing:.2em}.sound-settings{display:flex;flex-direction:column;align-items:center;gap:8px;max-width:var(--title-col);margin:26px auto 0}.sound-row{display:flex;align-items:center;gap:10px}.sound-label{font-size:13px;color:var(--ink-soft);min-width:4.5em;text-align:right;flex:none}.vol-off{display:inline-flex;align-items:center;justify-content:center;padding:6px 8px;box-shadow:2px 2px 0 var(--line)}.vol-off.on{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}.vol-bars{display:inline-flex;align-items:flex-end;gap:5px}.vol-bar{width:16px;padding:0;box-shadow:2px 2px 0 var(--line)}.vol-bar.lit{background:var(--gold)}.vol-bar:hover:not(:disabled){background:#fff8e6}.vol-bar.lit:hover:not(:disabled){background:var(--gold)}.vol-off:active:not(:disabled),.vol-bar:active:not(:disabled){box-shadow:0 0 0 var(--line)}.card .sound-settings{margin-top:16px}.rec-row{display:flex;justify-content:space-between;gap:12px;font-size:14px;padding:3px 0;border-top:1px dashed #cdb98f}.rec-stars,.tab-stars,.nav-stars,.progress.full,.card-stars{color:#a8873a;letter-spacing:.1em}.rec-stars.full,.tab-stars.full,.nav-stars.full,.progress.full{color:#c98f0a}.rec-time{font-variant-numeric:tabular-nums}.topbar{display:flex;align-items:center;gap:14px;margin-bottom:12px;flex-wrap:wrap}.menu-btn{padding:6px 12px;font-size:14px}.rules-btn{padding:6px 10px;font-size:13px}.reset-btn{padding:6px 12px;font-size:14px}.puzzle-nav{display:flex;flex:1;justify-content:center;align-items:center;gap:14px;min-width:0}.nav-btn{padding:4px 9px;font-size:15px;line-height:1.2}.nav-name{font-size:14px;white-space:nowrap}.nav-stars{font-size:13px;white-space:nowrap}.mode-name{font-size:15px;letter-spacing:.1em}.progress{font-size:14px;color:var(--ink-soft)}.timer{margin-left:auto;font-size:22px;font-variant-numeric:tabular-nums;background:var(--card);border:2px solid var(--line);box-shadow:3px 3px 0 var(--line);padding:2px 12px}.level-tabs{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:14px}.tab{padding:7px 12px;font-size:14px;display:flex;flex-direction:column;align-items:center;gap:2px}.tab-stars{font-size:13px}.tab.active{background:var(--gold)}.board{position:relative;background:var(--card);border:3px solid var(--line);box-shadow:6px 6px 0 var(--line);padding:16px 16px 20px}.board.shake{animation:board-shake .4s steps(2,jump-none)}@keyframes board-shake{0%{transform:translate(-4px)}50%{transform:translate(4px,2px)}to{transform:translate(0)}}.goal-bar{display:flex;gap:16px;align-items:flex-start;justify-content:space-between;flex-wrap:wrap;margin-bottom:12px}.goal-desc{display:flex;align-items:flex-start;gap:12px;row-gap:6px;flex-wrap:wrap;flex:1 1 0;min-width:0;margin:0;font-size:14px;max-width:none}.goal-bar>.counters{flex:0 0 auto}.q-label{display:inline-block;background:var(--gold);border:2px solid var(--line);padding:0 8px;margin-right:8px;font-size:14px}.rule-strip{display:flex;align-items:center;gap:6px;row-gap:6px;flex-wrap:wrap;flex:1 1 0;min-width:0}.rule-strip .seat{width:14px;height:16px}.rule-strip .seat:before{top:2px;width:4px;height:4px}.rule-strip .seat:after{bottom:2px;width:8px;height:5px}.rule-strip .boat-item{flex-direction:row;align-items:center;gap:4px}.rule-strip .boat-stack .seat-row{margin-bottom:-6px}.rule-sub,.rule-word{font-size:13px;color:var(--ink-soft)}.rule-item{display:flex;align-items:center;gap:4px}.rule-sep{width:0;height:20px;border-left:2px solid var(--line);margin:0 2px}.boat-item{flex-direction:column;gap:2px}.boat-stack{display:inline-flex;flex-direction:column;align-items:center}.boat-stack .seat-row{position:relative;z-index:1;margin-bottom:-10px}.seat-cap{font-size:13px;line-height:1.1;color:var(--ink-soft);white-space:nowrap}.seat-row{display:flex;gap:3px}.seat{position:relative;width:22px;height:26px;border:2px solid var(--line);background:var(--paper)}.seat:before,.seat:after{content:"";position:absolute;left:50%;transform:translate(-50%);background:var(--ink-soft);opacity:.6}.seat:before{top:3px;width:6px;height:6px}.seat:after{bottom:3px;width:14px;height:8px}.seat-eq{font-size:13px;color:var(--ink-soft)}.danger-badge{display:inline-flex;align-items:center;gap:4px;background:var(--paper);border:2px solid var(--line);padding:3px 6px}.danger-badge.lg{gap:6px;padding:5px 8px}.danger-badge.sm{gap:5px;padding:2px 5px}.danger-badge.sm .side small{display:none}.guard{position:relative;display:inline-flex}.guard>svg{opacity:.45}.guard-x{position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(to top right,transparent 46%,var(--bad) 46%,var(--bad) 54%,transparent 54%)}.guard-label{font-size:13px;color:var(--ink-soft)}.side{display:inline-flex;flex-direction:column;align-items:center}.side-sprites{display:inline-flex;align-items:flex-end}.side small{font-size:13px;line-height:1.2;color:var(--ink-soft)}.op{color:var(--bad);font-weight:700;font-size:15px}.danger-badge.lg .op{font-size:18px}.card.rule-card{max-width:min(640px,92vw);text-align:left}.card.rule-card h2{text-align:center}.rule-row{display:flex;align-items:center;gap:10px;margin:8px 0}.rule-label{flex:0 0 64px;width:64px;font-size:13px;color:var(--ink-soft)}.rule-cells{display:flex;align-items:center;gap:8px;flex-wrap:wrap;min-width:0}.rule-cast{display:inline-flex;align-items:flex-end;gap:2px}.rule-count{padding:0 2px;font-size:13px;line-height:1.1;background:var(--card);border:2px solid var(--line)}.rule-note{font-size:13px;line-height:1.7;color:var(--ink-soft)}.rule-head{position:relative}.rule-toggle{display:none}.rule-text{margin:6px 0 10px;padding:0 0 0 1.3em;font-size:14px;line-height:1.7;color:var(--ink)}.rule-text li{margin:2px 0}.fail-badge{display:flex;justify-content:center;margin:6px 0}.rule-demo{position:relative;display:block;width:220px;height:72px;background:var(--paper);border:2px solid var(--line);overflow:hidden}.demo-actor{position:absolute;left:0;bottom:6px;display:block}.demo-guard{transform:translate(-48px);animation:demo-guard 4.8s steps(1) infinite}.demo-attacker{transform:translate(124px);animation:demo-attacker 4.8s steps(1) infinite}.demo-victim{transform:translate(160px)}.demo-x{position:absolute;left:50%;top:-10px;margin-left:-7px;font-size:22px;font-weight:700;line-height:1;color:var(--bad);transform:scale(1);animation:demo-x 4.8s steps(1) infinite}@keyframes demo-guard{0%{transform:translate(16px)}25%{transform:translate(16px);animation-timing-function:steps(4)}50%,90%{transform:translate(-48px);animation-timing-function:steps(4)}to{transform:translate(16px)}}@keyframes demo-attacker{0%,50%{transform:translate(88px);animation-timing-function:steps(3)}70%,90%{transform:translate(124px);animation-timing-function:steps(3)}to{transform:translate(88px)}}@keyframes demo-x{0%{opacity:0;transform:scale(0)}70%{opacity:1;transform:scale(0);animation-timing-function:steps(2)}90%{opacity:1;transform:scale(1)}to{opacity:0;transform:scale(0)}}.counters{display:flex;gap:8px;white-space:nowrap}.counter{font-size:14px;color:var(--ink-soft);background:#fff8e6;border:2px solid var(--line);padding:4px 10px}.counter b{color:var(--ink);font-size:17px;margin-left:2px}.scene{--boat-w: 168px;display:flex;align-items:stretch;min-height:300px;border:3px solid var(--line);overflow:hidden;position:relative}.scene.hidden{visibility:hidden}.bank{flex:0 0 29%;position:relative;background:linear-gradient(180deg,var(--grass-2) 0 6px,var(--grass) 6px 100%);padding:10px 10px 54px;display:flex;flex-direction:column;gap:8px}.bank-left{box-shadow:inset -6px 0 0 var(--soil)}.bank-right{box-shadow:inset 6px 0 0 var(--soil)}.bank-label{font-size:13px;color:var(--ink);background:var(--card);border:2px solid var(--line);padding:1px 8px;align-self:flex-start}.bank-entities{display:flex;flex-wrap:wrap;gap:6px;align-content:flex-start}.bank-deco{position:absolute;bottom:6px;right:14px;pointer-events:none;opacity:.9}.bank-left .bank-deco{right:auto;left:14px}.chip{padding:4px;line-height:0;background:#f9f1dd8c;border:2px solid transparent;box-shadow:none}.chip:hover:not(:disabled){background:var(--card);border-color:var(--line);transform:translateY(-3px)}.chip:active:not(:disabled){transform:translateY(-1px);box-shadow:none}.chip:disabled{opacity:1;box-shadow:none}.chip.on-boat{background:transparent;padding:0 2px}.chip.on-boat:hover:not(:disabled){border-color:transparent;background:#f9f1dd59}.river{flex:1;position:relative;background:repeating-linear-gradient(180deg,var(--water-2) 0 6px,var(--water) 6px 18px)}.boat{position:absolute;top:50%;transform:translateY(-40%);display:flex;flex-direction:column;align-items:center;transition:left .85s steps(14);z-index:2;cursor:default}.boat.side-0{left:3%}.boat.side-1{left:calc(97% - var(--boat-w))}.boat-passengers{display:flex;gap:2px;height:48px;align-items:flex-end;margin-bottom:-10px;position:relative;z-index:1}.boat-svg{display:block;filter:drop-shadow(0 4px 0 rgba(0,0,0,.25))}.boat.sailing{animation:rock .5s steps(2) infinite alternate}@keyframes rock{0%{margin-top:-2px}to{margin-top:2px}}.controls{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:18px}.help{text-align:center;font-size:14px;margin:12px 0 0;min-height:1.5em;color:var(--ink-soft)}.help.hint{color:#8a5a00}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#2a1f1a8c;display:flex;align-items:center;justify-content:center;animation:fade-in .2s steps(3);z-index:5}.overlay.fail{background:#781e188c}@keyframes fade-in{0%{opacity:0}to{opacity:1}}.card{background:var(--card);border:3px solid var(--line);box-shadow:6px 6px 0 var(--line);padding:22px 30px;text-align:center;max-width:440px;animation:pop-in .25s steps(4)}@keyframes pop-in{0%{transform:scale(.85);opacity:0}to{transform:scale(1);opacity:1}}.card h2{margin:0 0 6px;font-size:26px;letter-spacing:.1em}.overlay.fail .card h2{color:var(--bad)}.card p{margin:4px 0;font-size:14px;line-height:1.7}.card-stars{font-size:32px!important;margin:2px 0 6px!important}.card-sub{color:var(--ink-soft);font-size:13px!important}.card-btns{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:16px}.card-btns.col{flex-direction:column;align-items:stretch;min-width:240px}.card.credits{width:min(440px,92vw);text-align:left}.card.credits h2{text-align:center}.credit-list{display:flex;flex-direction:column;gap:12px;margin:12px 0 2px;font-size:14px;line-height:1.6}.credit-row{display:grid;grid-template-columns:5.5em 1fr;gap:8px}.credit-row dt{color:var(--ink-soft)}.credit-soft{color:var(--ink-soft);font-size:13px}.credits a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}.credits a:focus-visible{outline:3px solid var(--accent);outline-offset:2px}.credit-note{margin:0;padding-top:10px;border-top:1px solid var(--line);font-size:13px;line-height:1.6;color:var(--ink-soft)}.banner{position:absolute;left:0;right:0;top:42%;transform:translateY(-50%);text-align:center;background:var(--gold);border-top:3px solid var(--line);border-bottom:3px solid var(--line);padding:12px 0;z-index:6;animation:pop-in .2s steps(3)}.banner-text{font-size:30px;letter-spacing:.2em}.banner-sub{font-size:14px;color:var(--ink-soft)}.countdown-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#2a1f1a59;z-index:6}.countdown{font-size:72px;color:var(--card);text-shadow:4px 4px 0 var(--line);letter-spacing:.1em}.result{text-align:center}.result h1{font-size:34px;letter-spacing:.15em;margin:30px 0 24px}.result-stats{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-bottom:18px}.stat{background:var(--card);border:2px solid var(--line);box-shadow:4px 4px 0 var(--line);padding:10px 22px;min-width:150px}.stat-label{font-size:13px;color:var(--ink-soft)}.stat-num{font-size:26px;font-variant-numeric:tabular-nums}.stat-sub{font-size:13px;color:var(--ink-soft);margin-left:4px}.best-note{font-size:22px;color:#c98f0a;letter-spacing:.2em}.best-sub{font-size:13px;color:var(--ink-soft)}.result-btns{display:flex;justify-content:center;gap:14px;margin-top:20px}.footer{margin-top:26px;text-align:center}.footer p{font-size:13px;color:var(--ink-soft);line-height:1.8}.rotate-gate{display:none}.rotate-gate-msg{margin:0;font-size:18px;color:var(--ink)}.rotate-gate-sub{margin:0;font-size:13px;line-height:1.7;color:var(--ink-soft)}@media(max-width:600px){.bank{flex-basis:32%}.scene{--boat-w: 168px}.header h1{font-size:30px}.title-scene{height:100px}}@media(hover:none){button:hover:not(:disabled){background:var(--card)}button.primary:hover:not(:disabled){background:var(--accent)}.tab.active:hover:not(:disabled){background:var(--gold)}.vol-bar:hover:not(:disabled){background:var(--card)}.vol-bar.lit:hover:not(:disabled){background:var(--gold)}.vol-off.on:hover:not(:disabled){background:var(--accent)}.chip:hover:not(:disabled){background:#f9f1dd8c;border-color:transparent;transform:none}.chip.on-boat:hover:not(:disabled){background:transparent}}@media(pointer:coarse){.key-hint,.only-mouse{display:none}.only-touch{display:list-item}}@media(max-height:520px)and (orientation:landscape){body{min-height:100dvh}.app{padding:12px 16px 24px}.app.play{display:grid;grid-template-rows:auto minmax(0,1fr) auto;height:100dvh;max-width:none;padding:6px 8px;row-gap:6px;overflow:hidden}.topbar{gap:8px;margin-bottom:0;flex-wrap:nowrap}.menu-btn,.rules-btn{padding:7px 10px;font-size:13px}.nav-btn{padding:7px 10px}.counters{margin-left:auto}.counter{font-size:13px;padding:2px 8px}.counter b{font-size:15px}.timer{margin-left:auto;font-size:16px;padding:2px 8px}.board{min-height:0;padding:8px;box-shadow:4px 4px 0 var(--line)}.scene{--boat-w: 140px;height:100%;min-height:0}.bank{flex-basis:32%;min-width:192px;padding:8px}.bank-entities{gap:4px}.chip{padding:2px}.bank-deco{opacity:.6}.controls{align-items:center;gap:8px;margin-top:0;flex-wrap:nowrap}.controls button{padding:8px 14px;font-size:14px}.controls .reset-btn{margin-left:auto}.help{flex:1;min-width:0;min-height:0;margin:0;font-size:13px;text-align:left;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.overlay{overflow-y:auto}.card{margin:auto;padding:8px 16px 10px;max-width:min(440px,92vw)}.card h2{margin:0 0 8px;font-size:20px}.card-btns{gap:6px;margin-top:8px}.card-btns.col{display:grid;grid-template-columns:1fr 1fr;min-width:0}.card-btns.col>:only-child{grid-column:1 / -1;justify-self:center;min-width:160px}.card-btns.col button{padding:8px 10px;font-size:14px}.card .sound-settings{gap:6px;margin-top:8px}.header h1{font-size:28px}.title-scene{height:90px}.rules{padding:8px 12px 8px 28px;line-height:1.7}.card.rule-card{max-width:min(640px,94vw);padding:8px 14px 10px}.rule-body{display:grid;grid-template-columns:1fr 1fr;column-gap:14px}.rule-row{gap:6px;margin:4px 0}.rule-label{flex:0 0 52px;width:52px}.rule-row-note{display:none}.card.rule-card .seat{width:18px;height:22px}.card.rule-card .seat:before{top:2px;width:4px;height:5px}.card.rule-card .seat:after{bottom:2px;width:12px;height:7px}.card.rule-card .boat-item{flex-direction:row;align-items:center;gap:4px}.card.rule-card .boat-stack .seat-row{margin-bottom:-8px}.rule-demo{height:48px}.rule-demo .demo-x{font-size:18px;top:-8px;margin-left:-6px}.danger-badge.lg{gap:4px;padding:3px 5px}.danger-badge.lg .op{font-size:16px}.card.rule-card h2{margin:0 0 4px}.rule-head .rule-toggle{display:inline-block;position:absolute;right:0;top:0;padding:7px 10px;font-size:13px}}@media(max-width:600px)and (orientation:portrait)and (pointer:coarse){.app.play{display:none}.rotate-gate{display:flex;position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:24px;text-align:center;background:var(--paper);color:var(--ink)}}@media(prefers-reduced-motion:reduce){.rule-demo,.rule-demo *{animation:none}}