:root {
  color-scheme: dark;
  --ink: #17142d;
  --night: #211d43;
  --night-2: #302756;
  --wood: #7a4e3a;
  --wood-dark: #4b2e2c;
  --paper: #f4dda4;
  --paper-ink: #34283a;
  --light: #ffe76a;
  --light-hot: #fff7bd;
  --sound: #70e0d1;
  --sound-hot: #d0fff4;
  --danger: #ff7771;
  --white: #fffdf0;
  --pixel-shadow: 5px 5px 0 #100e24;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; margin: 0; overflow-x: hidden; }

body {
  background: #17142d;
  color: var(--white);
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  overscroll-behavior: none;
}

button { font: inherit; }
button:focus-visible, .world:focus-visible { outline: 4px solid #fff; outline-offset: 3px; }
[hidden] { display: none !important; }

.game-shell {
  width: min(100%, 920px);
  min-height: 100dvh;
  margin: 0 auto;
  background: var(--night);
  border-inline: 5px solid #100e24;
  position: relative;
}

.top-rail {
  min-height: 66px;
  display: grid;
  grid-template-columns: 52px 1fr 1fr auto;
  align-items: stretch;
  background: #151229;
  border-bottom: 5px solid #0d0b1c;
  position: sticky;
  top: 0;
  z-index: 30;
}

.brand-mark {
  display: grid;
  place-items: center;
  color: #19162d;
  background: var(--paper);
  font: 900 14px/1 ui-monospace, monospace;
  letter-spacing: -1px;
  border-right: 5px solid #0d0b1c;
}

.score-box, .room-box {
  padding: 8px 13px 6px;
  border-right: 2px dashed #4b426e;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.score-box span, .room-box span { color: #aea7cc; font-size: 11px; font-weight: 700; }
.score-box strong, .room-box strong { font: 900 20px/1.15 ui-monospace, "Yu Gothic", monospace; }

.rail-button {
  min-width: 78px;
  border: 0;
  color: #151229;
  background: var(--sound);
  font-weight: 900;
  cursor: pointer;
}

.screen { min-height: calc(100dvh - 66px); }

.start-screen {
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  background-color: var(--night);
  background-image: linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 22px 22px;
}

.attic-scene {
  min-height: calc(100dvh - 66px);
  position: relative;
  overflow: hidden;
  background: #302756;
  border-right: 5px solid #100e24;
}

.roof-line { position: absolute; inset: 0; clip-path: polygon(0 0,100% 0,100% 18%,50% 2%,0 24%); background: #17142d; }
.attic-scene::after { content:""; position:absolute; left:0; right:0; bottom:0; height:28%; background:#6d4637; border-top:7px solid #3d2830; box-shadow: inset 0 17px 0 #7f553e, inset 0 22px 0 #4b302f; }

.moon-window {
  position: absolute; width: 150px; height: 150px; border-radius: 50%; left: 14%; top: 16%;
  background: #f7d86a; border: 10px solid #151229; box-shadow: 0 0 0 5px #8a6850, 0 0 55px rgba(255,231,106,.4);
  overflow: hidden;
}
.moon-window::before, .moon-window::after { content:""; position:absolute; background:#151229; z-index:2; }
.moon-window::before { width:10px; left:60px; top:0; bottom:0; }
.moon-window::after { height:10px; top:60px; left:0; right:0; }
.moon-window i { position:absolute; width:54px; height:54px; border-radius:50%; background:#fff5b4; left:20px; top:20px; }
.moon-window b { position:absolute; width:180px; height:70px; background:#2a2250; left:-10px; bottom:-25px; transform:rotate(-8deg); }

.hanging-lamp { position:absolute; width:150px; height:160px; left:54%; top:16%; }
.hanging-lamp::before { content:""; position:absolute; left:73px; top:-70px; width:6px; height:80px; background:#100e24; }
.hanging-lamp::after { content:""; position:absolute; left:38px; top:8px; width:76px; height:44px; background:#edc84f; border:7px solid #17142d; clip-path:polygon(25% 0,75% 0,100% 100%,0 100%); }
.hanging-lamp span { position:absolute; left:61px; top:48px; width:28px; height:28px; background:#fff6a5; border:5px solid #17142d; box-shadow:0 0 0 7px rgba(255,231,106,.14),0 0 0 16px rgba(255,231,106,.08); }

.gramophone { position:absolute; z-index:3; left:12%; bottom:18%; width:190px; height:170px; }
.gramophone::before { content:""; position:absolute; left:15px; bottom:0; width:150px; height:62px; background:#bd7548; border:8px solid #2a1a27; box-shadow:var(--pixel-shadow); }
.gramophone span { position:absolute; left:63px; top:13px; width:95px; height:95px; background:#d7a946; border:8px solid #2a1a27; clip-path:polygon(0 12%,100% 0,65% 55%,60% 100%,38% 100%,35% 52%); transform:rotate(-18deg); }
.gramophone i { position:absolute; left:27px; bottom:18px; width:64px; height:35px; border:7px solid #2a1a27; border-radius:50%; background:#17142d; }

.specimen-drawer { position:absolute; z-index:3; right:8%; bottom:10%; width:175px; height:145px; background:#9a6644; border:8px solid #2a1a27; box-shadow:var(--pixel-shadow); display:grid; grid-template-columns:1fr 1fr; gap:6px; padding:10px; }
.specimen-drawer i { background:#6d4637; border:4px solid #3d2830; position:relative; }
.specimen-drawer i::after { content:""; position:absolute; width:12px; height:6px; background:#edc84f; left:50%; top:50%; transform:translate(-50%,-50%); }

.dust { position:absolute; width:6px; height:6px; background:#fff1a1; box-shadow:22px 36px 0 #fff1a1,55px -8px 0 #fff1a1,88px 27px 0 #fff1a1; animation: drift 5s steps(5) infinite; }
.dust-a { left:22%; top:52%; }.dust-b { left:58%; top:44%; animation-delay:-2s }.dust-c { left:70%; top:65%; animation-delay:-4s }

.start-copy { padding: clamp(30px,5vw,72px) clamp(24px,5vw,54px); align-self:center; }
.eyebrow { margin:0 0 9px; color:var(--sound); font-size:13px; font-weight:900; letter-spacing:.08em; }
h1 { margin:0; color:var(--paper); font-size:clamp(36px,6vw,64px); line-height:1.12; letter-spacing:.02em; text-shadow:5px 5px 0 #100e24; }
.start-copy > p:not(.eyebrow,.small-note) { line-height:1.8; font-weight:700; }
.two-rules { display:grid; gap:9px; margin:22px 0; }
.two-rules span { padding:10px 12px; border-left:7px solid var(--light); background:#17142d; line-height:1.55; font-size:14px; }
.two-rules span + span { border-color:var(--sound); }
.two-rules b { color:var(--light); margin-right:8px; }.two-rules span + span b{color:var(--sound)}

.start-button, .next-button {
  min-height:54px; border:5px solid #100e24; padding:10px 18px; background:var(--paper); color:var(--paper-ink); font-weight:900; font-size:17px; box-shadow:var(--pixel-shadow); cursor:pointer;
}
.start-button:active, .next-button:active { transform:translate(4px,4px); box-shadow:1px 1px 0 #100e24; }
.small-note { color:#aaa4c6; font-size:12px; }

.play-screen { background:#28224b; padding-bottom:18px; }
.mode-strip { min-height:102px; display:flex; justify-content:space-between; align-items:center; gap:16px; padding:14px clamp(14px,4vw,34px); background:#302756; border-bottom:5px solid #100e24; }
.mode-strip strong { display:block; margin-top:5px; font-size:clamp(18px,3.2vw,27px); color:var(--paper); }
.mode-strip p { margin:4px 0 0; color:#d0cae8; font-size:13px; line-height:1.4; }
.mode-badge { display:inline-block; background:var(--light); color:#27203f; padding:4px 9px; border:3px solid #100e24; font-size:12px; font-weight:900; }
.mode-badge.sound { background:var(--sound); }
.time-dial { flex:0 0 74px; height:74px; display:grid; place-content:center; text-align:center; background:#17142d; border:6px solid var(--paper); box-shadow:4px 4px 0 #100e24; }
.time-dial span { font:900 30px/1 ui-monospace,monospace; }.time-dial small{font-size:10px;color:#b9b2d2}

.world {
  position:relative; height:clamp(400px,62dvh,590px); overflow:hidden; touch-action:pan-y; user-select:none;
  background:#302756; border-bottom:8px solid #100e24; cursor:crosshair;
}
.floor-grid { position:absolute; inset:0; opacity:.55; background-color:#352d5b; background-image:linear-gradient(90deg,#272145 3px,transparent 3px),linear-gradient(#272145 3px,transparent 3px); background-size:48px 48px; transform:perspective(350px) rotateX(16deg) scale(1.12); transform-origin:bottom; }
.wall-shelf { position:absolute; left:5%; right:5%; top:8%; height:14px; background:#6d4637; border:5px solid #21172a; box-shadow:0 14px 0 #4b302f; }
.wall-shelf i { position:absolute; width:24px; height:42px; bottom:9px; background:#b36d49; border:4px solid #21172a; }
.wall-shelf i:nth-child(1){left:8%}.wall-shelf i:nth-child(2){left:16%;height:58px;background:#427e85}.wall-shelf i:nth-child(3){right:12%;width:52px;height:30px;background:#c59c4b}

.light-layer,.sound-layer { position:absolute; inset:0; }
.lamp { position:absolute; z-index:8; left:50%; bottom:26px; width:76px; height:88px; transform:translateX(-50%); }
.lamp::before { content:""; position:absolute; left:15px; top:4px; width:46px; height:43px; background:#edc84f; border:6px solid #17142d; clip-path:polygon(22% 0,78% 0,100% 100%,0 100%); }
.lamp span { position:absolute; left:29px; top:40px; width:20px; height:20px; background:#fff8bd; border:4px solid #17142d; z-index:2; }
.lamp i { position:absolute; left:27px; bottom:0; width:24px; height:35px; background:#8f6455; border:5px solid #17142d; }
.beam { position:absolute; z-index:3; left:50%; bottom:91px; width:18px; height:760px; background:rgba(255,231,106,.48); border-inline:3px solid rgba(255,250,185,.82); transform-origin:50% 100%; transform:translateX(-50%) rotate(0deg); clip-path:polygon(36% 100%,64% 100%,100% 0,0 0); filter:drop-shadow(0 0 8px #ffe76a); }
.target-layer { position:absolute; inset:0; z-index:7; }
.light-target { position:absolute; width:38px; height:38px; transform:translate(-50%,-50%) rotate(45deg); border:5px solid var(--light-hot); background:#5d522e; box-shadow:0 0 0 4px #302756,0 0 20px rgba(255,231,106,.8); }
.light-target::after { content:""; position:absolute; inset:7px; background:var(--light); }
.light-target.collected { animation: collect .38s steps(4) forwards; }
.aim-guide,.sound-guide { position:absolute; z-index:10; left:50%; bottom:9px; transform:translateX(-50%); color:#fff7bd; background:#17142d; border:3px solid #6e668c; padding:4px 10px; font-size:12px; font-weight:800; white-space:nowrap; }

.sound-objects { position:absolute; inset:0; z-index:5; }
.sound-object { position:absolute; transform:translate(-50%,-50%); width:96px; height:96px; border:0; color:var(--white); background:transparent; cursor:pointer; touch-action:none; }
.sound-object .object-shape { position:absolute; inset:14px; display:grid; place-items:center; background:#925c4a; border:6px solid #17142d; box-shadow:5px 5px 0 #17142d; font-size:38px; filter:saturate(.75); }
.sound-object::after { content:attr(data-key); position:absolute; right:2px; bottom:2px; z-index:3; width:24px; height:24px; display:grid; place-items:center; background:var(--paper); color:#211d43; border:3px solid #17142d; font:900 12px/1 ui-monospace,monospace; }
.sound-object[data-shape="bell"] .object-shape { clip-path:polygon(35% 0,65% 0,72% 15%,88% 70%,100% 78%,100% 90%,0 90%,0 78%,12% 70%,28% 15%); background:#d4a743; }
.sound-object[data-shape="drum"] .object-shape { border-radius:50%; background:#af544d; }
.sound-object[data-shape="ruler"] .object-shape { inset:6px 32px; background:#d7bd70; transform:rotate(-18deg); }
.sound-object[data-shape="fork"] .object-shape { clip-path:polygon(16% 0,30% 0,30% 47%,44% 55%,44% 0,58% 0,58% 55%,72% 47%,72% 0,86% 0,86% 55%,58% 76%,58% 100%,44% 100%,44% 76%,16% 55%); background:#9fc2c6; border:0; }
.sound-object.active .object-shape { animation:vibrate .16s steps(2) infinite; filter:saturate(1.2) drop-shadow(0 0 6px var(--sound)); }
.sound-object.active::before,.sound-object.active::after { content:""; position:absolute; inset:1px; border:4px solid var(--sound); border-radius:50%; animation:ripple 1.15s steps(6) infinite; }
.sound-object.active::after { animation-delay:-.55s; }
.sound-object.holding .object-shape { outline:6px solid var(--sound-hot); outline-offset:4px; }
.sound-object.wrong { animation:nudge .3s steps(3); }
.capture-cursor { position:absolute; z-index:4; width:126px; height:126px; border:5px dashed rgba(112,224,209,.35); border-radius:50%; left:50%; top:50%; transform:translate(-50%,-50%); pointer-events:none; }
.capture-cursor span { position:absolute; inset:19px; border:3px solid rgba(112,224,209,.25); border-radius:50%; }

.feedback-burst { position:absolute; z-index:20; left:50%; top:45%; transform:translate(-50%,-50%); min-width:210px; text-align:center; pointer-events:none; font-weight:900; font-size:25px; color:#17142d; }
.feedback-burst.show { padding:10px 14px; background:var(--paper); border:5px solid #17142d; box-shadow:var(--pixel-shadow); animation:pop .65s steps(4) forwards; }
.feedback-burst.miss { background:var(--danger); color:#261624; }

.field-footer { padding:12px clamp(14px,4vw,34px); display:grid; grid-template-columns:minmax(120px,.35fr) 1fr; gap:14px; align-items:center; }
.streak-meter { border-left:7px solid var(--sound); padding-left:12px; }
.streak-meter span,.satchel>span{display:block;color:#bdb6d5;font-size:11px;font-weight:800}.streak-meter strong{font:900 28px/1 ui-monospace,monospace;color:var(--sound)}
#streakPips { display:inline-block; width:min(100%,100px); height:7px; margin-left:8px; background:#4b426e; box-shadow:inset calc(var(--streak,0) * 10px) 0 0 var(--sound); }
.run-collection { display:flex; gap:5px; margin-top:5px; min-height:32px; align-items:center; flex-wrap:wrap; }
.mini-specimen { width:30px; height:30px; display:grid; place-items:center; border:3px solid #100e24; background:var(--paper); color:#251f3e; font-size:16px; animation:pop .35s steps(3); }

.quiz-screen { background:#4b302f; padding:clamp(18px,5vw,55px); display:grid; place-items:center; }
.quiz-book { width:min(100%,720px); min-height:500px; display:grid; grid-template-columns:24px 1fr; color:var(--paper-ink); box-shadow:9px 9px 0 #251b2b; }
.book-spine { background:#804b3a; border:6px solid #251b2b; border-right:0; }
.quiz-page { background-color:var(--paper); background-image:linear-gradient(#ddc58f 2px,transparent 2px); background-size:100% 34px; border:6px solid #251b2b; padding:clamp(22px,5vw,48px); }
.quiz-page .eyebrow { color:#5c4160; }.quiz-page h2{font-size:clamp(24px,4vw,38px);margin:5px 0 22px}.quiz-question{font-size:clamp(18px,3vw,24px);font-weight:900;line-height:1.6;min-height:64px}
.quiz-choices{display:grid;grid-template-columns:1fr 1fr;gap:10px}.quiz-choice{min-height:58px;text-align:left;border:4px solid #3c3045;background:#fff7db;color:#34283a;padding:10px;font-weight:800;cursor:pointer}.quiz-choice.correct{background:#bde9c7}.quiz-choice.wrong{background:#ffb4aa}.quiz-choice:disabled{cursor:default;opacity:1}
.quiz-explanation{margin:16px 0;padding:12px;border-left:7px solid #5b8f77;background:#fff7db;line-height:1.65;font-weight:700}.next-button{margin-top:12px}

.result-screen { background:#2b234d; padding:clamp(18px,4vw,45px); }
.result-ledger { max-width:760px; margin:auto; background:#f1dca7; color:#34283a; border:8px solid #17142d; box-shadow:10px 10px 0 #100e24; padding:clamp(18px,4vw,38px); position:relative; }
.result-ledger::after { content:""; position:absolute; inset:13px; border:2px dashed #8d724d; pointer-events:none; }
.ledger-title,.final-score,.collection-report,.book-grid,.result-actions,.ranking{position:relative;z-index:2}.ledger-title h2{font-size:clamp(26px,5vw,44px);margin:4px 0}.ledger-title .eyebrow{color:#695070}.ledger-title p:last-child{line-height:1.65;font-weight:700}
.final-score{display:flex;align-items:baseline;gap:12px;border-block:5px solid #34283a;padding:12px 0}.final-score span{font-weight:900}.final-score strong{font:900 clamp(38px,8vw,68px)/1 ui-monospace,monospace}.final-score small{margin-left:auto;font-weight:800}
.collection-report{display:grid;grid-template-columns:repeat(3,1fr);margin:15px 0;border:4px solid #34283a}.collection-report>div{padding:9px;text-align:center;border-right:3px solid #34283a}.collection-report>div:last-child{border:0}.collection-report span,.collection-report small{display:block;font-size:11px;font-weight:800}.collection-report strong{font:900 26px/1.2 ui-monospace,monospace}
.book-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:7px}.book-cell{aspect-ratio:1;display:grid;place-items:center;text-align:center;border:4px solid #34283a;background:#d3bd8a;color:#6f5f57;font-size:11px;font-weight:900;line-height:1.1}.book-cell.unlocked{background:#fff6ca;color:#34283a}.book-cell b{display:block;font-size:22px}
.result-actions{display:flex;gap:12px;margin-top:18px;flex-wrap:wrap}.secondary-button{min-height:54px;border:5px solid #34283a;background:#70e0d1;color:#34283a;padding:9px 16px;font-weight:900;cursor:pointer}
.ranking{margin-top:15px;padding:12px;border:4px solid #34283a;background:#fff7db;min-height:80px}

@keyframes drift { 50%{transform:translate(12px,-18px)} }
@keyframes collect { to{transform:translate(-50%,-50%) rotate(225deg) scale(2);opacity:0} }
@keyframes pop { 0%{transform:translate(-50%,-50%) scale(.55)} 55%{transform:translate(-50%,-50%) scale(1.12)} 100%{transform:translate(-50%,-70%) scale(1);opacity:0} }
.mini-specimen { transform:none; }.mini-specimen:nth-child(even){animation-name:none}
@keyframes vibrate { 0%{transform:translate(-3px,2px) rotate(-2deg)}100%{transform:translate(3px,-2px) rotate(2deg)} }
@keyframes ripple { from{transform:scale(.45);opacity:.8}to{transform:scale(1.35);opacity:0} }
@keyframes nudge { 33%{transform:translate(-57%,-50%)}66%{transform:translate(-43%,-50%)} }

@media (max-width: 700px) {
  .game-shell{border:0}.start-screen{grid-template-columns:1fr;min-height:auto}.attic-scene{min-height:300px;border-right:0;border-bottom:5px solid #100e24}.start-copy{padding:25px 20px 36px}.top-rail{grid-template-columns:46px 1fr 1fr 68px}.score-box,.room-box{padding-inline:8px}.score-box strong,.room-box strong{font-size:17px}.rail-button{min-width:68px;font-size:12px}
  .mode-strip{min-height:116px;align-items:flex-start}.mode-strip p{max-width:240px}.time-dial{flex-basis:62px;height:62px}.world{height:56dvh;min-height:390px}.field-footer{grid-template-columns:110px 1fr}.quiz-choices{grid-template-columns:1fr}.quiz-book{grid-template-columns:15px minmax(0,1fr)}.quiz-page{min-width:0}.book-grid{grid-template-columns:repeat(4,1fr)}
  .sound-object{width:82px;height:82px}.sound-object .object-shape{font-size:30px}.result-screen{padding:13px}.result-ledger{padding:20px 16px}.final-score{flex-wrap:wrap}.final-score small{width:100%}
}

@media (max-width: 390px) {
  .attic-scene{min-height:250px}.gramophone{transform:scale(.8);transform-origin:left bottom}.specimen-drawer{transform:scale(.8);transform-origin:right bottom}.mode-strip p{font-size:11px}.field-footer{grid-template-columns:1fr}.streak-meter{display:flex;align-items:center;gap:8px}.book-grid{grid-template-columns:repeat(3,1fr)}
}

@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important}.beam{filter:none}
}