:root{color-scheme:dark;--ink:#17152f;--night:#29265b;--violet:#5850a7;--sky:#c9e7e8;--sun:#ffd45c;--paper:#fff8dc;--coral:#ff7e67;--mint:#6ad7b5;--road:#fff3b5;--shadow:#11102c;--focus:#fff36c;font-family:"Trebuchet MS","Yu Gothic",Meiryo,sans-serif}
*{box-sizing:border-box}
html{min-width:320px;background:var(--ink)}
body{margin:0;min-height:100vh;background:var(--ink);color:var(--paper);overflow-x:hidden}
button{font:inherit}
button:focus-visible{outline:4px solid var(--focus);outline-offset:3px}
[hidden]{display:none!important}
.game-shell{width:min(100%,900px);margin:0 auto;min-height:100vh;background:linear-gradient(180deg,#363270 0 22%,#17152f 72%);position:relative;overflow:hidden}
.screen{min-height:100vh;padding:max(22px,env(safe-area-inset-top)) clamp(16px,4vw,36px) max(30px,env(safe-area-inset-bottom));position:relative}
.start-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;background:radial-gradient(circle at 18% 18%,#ffe783 0 7%,transparent 7.4%),linear-gradient(150deg,#78cfd0 0 31%,#645caf 31.3% 62%,#25224f 62.3%);isolation:isolate}
.start-screen:before,.start-screen:after{content:"";position:absolute;z-index:-1;border:3px solid rgba(255,255,255,.2);border-radius:50%}
.start-screen:before{width:420px;height:420px;left:-210px;top:18%}.start-screen:after{width:580px;height:580px;right:-360px;bottom:-220px}
.sky-mark{position:absolute;inset:20px 20px auto;display:flex;justify-content:space-between;pointer-events:none}.sun-disc,.moon-disc{width:62px;height:62px;border-radius:50%;display:block}.sun-disc{background:var(--sun);box-shadow:0 0 0 12px rgba(255,212,92,.18)}.moon-disc{background:var(--paper);box-shadow:inset 18px -6px 0 #615aa7}
.title-lockup{max-width:670px}.eyebrow,.stage-kicker,.result-kicker{font-size:.76rem;font-weight:900;letter-spacing:.22em;margin:0 0 8px;color:var(--sun)}
h1{font-size:clamp(3rem,10vw,6.4rem);line-height:.92;letter-spacing:-.06em;margin:0;text-shadow:5px 6px 0 #312d68}h2,h3{margin:0;line-height:1.18}.lead{font-size:clamp(1rem,3.2vw,1.3rem);line-height:1.7;margin:20px auto;max-width:610px}.lead strong{color:var(--sun)}
.mini-map{width:min(620px,94%);display:grid;grid-template-columns:auto 1fr 1fr auto 1fr auto;align-items:center;gap:0;margin:8px auto 18px}.mini-map i{height:8px;background:var(--road);box-shadow:0 3px 0 #a77962}.mini-map span{border:3px solid var(--ink);background:var(--paper);color:var(--ink);font-weight:900;padding:8px;border-radius:50%;min-width:62px;min-height:62px;display:grid;place-content:center}.mini-map .map-gate{background:var(--coral);color:#fff;border-radius:12px;transform:rotate(-3deg)}
.start-rules{list-style:none;padding:0;margin:0 auto 20px;display:flex;flex-wrap:wrap;justify-content:center;gap:8px}.start-rules li{background:#24214f;border:2px solid rgba(255,255,255,.2);padding:8px 12px}.start-rules b{color:var(--sun);margin-right:5px}
.main-button,.utility-button,.icon-button,.listen-button{border:0;cursor:pointer;font-weight:900}.main-button{min-height:52px;padding:12px 24px;background:var(--sun);color:var(--ink);box-shadow:0 5px 0 #a87925;border:3px solid var(--ink)}.main-button:active{transform:translateY(3px);box-shadow:0 2px 0 #a87925}.quiet-note{font-size:.8rem;opacity:.82}
.play-screen{background:#272451;padding-bottom:44px}.play-header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.play-header h2{font-size:clamp(1.6rem,6vw,2.8rem)}.icon-button,.utility-button,.listen-button{min-height:44px;padding:9px 13px;border:2px solid var(--paper);background:#29265b;color:var(--paper)}
.hud-line{display:flex;gap:6px;margin:15px 0 10px}.hud-line span{flex:1;min-width:0;background:var(--paper);color:var(--ink);padding:7px 5px;text-align:center;border-bottom:4px solid #a79c78;font-size:.8rem}.hud-line b{display:block;font-size:1.1rem}
.mission-strip{display:flex;gap:10px;align-items:center;background:var(--coral);color:#211d3f;border:3px solid var(--ink);box-shadow:6px 6px 0 var(--shadow);padding:10px;margin:0 4px 13px}.next-gate{min-width:0;flex:1}.next-gate span,.next-gate small{display:block}.next-gate span{font-size:.7rem;font-weight:900;letter-spacing:.1em}.next-gate strong{font-size:clamp(1rem,4vw,1.3rem);display:block;overflow-wrap:anywhere}.next-gate small{font-weight:700;margin-top:2px}.listen-button{background:var(--ink);white-space:nowrap}
.danger-copy{display:flex;justify-content:space-between;gap:10px;font-size:.78rem;font-weight:800;margin:0 2px 4px}.danger-track{height:12px;background:#0e0d25;border:2px solid var(--paper);margin:0 2px 12px;overflow:hidden}.danger-track i{display:block;width:0;height:100%;background:repeating-linear-gradient(135deg,var(--sun) 0 12px,var(--coral) 12px 24px);transition:width .24s ease}
.board-world{position:relative;background:#7bc6c4;border:4px solid var(--ink);box-shadow:8px 8px 0 #0f0e27;padding:clamp(30px,7vw,52px) clamp(12px,4vw,30px) clamp(28px,6vw,44px);overflow:hidden;isolation:isolate}.board-world:before{content:"";position:absolute;inset:0;background:linear-gradient(165deg,rgba(255,255,255,.2) 0 22%,transparent 22.4%),repeating-linear-gradient(0deg,transparent 0 36px,rgba(21,35,71,.08) 37px 39px);z-index:-2}.sun-side,.goal-flag{position:absolute;top:8px;font-size:.62rem;letter-spacing:.18em;font-weight:900}.sun-side{left:12px;color:#35305e}.goal-flag{right:12px;color:var(--paper)}.dusk-curtain{position:absolute;z-index:-1;right:0;top:0;bottom:0;width:0;background:linear-gradient(90deg,transparent,#38336f 22%,#17152f 100%);opacity:.92;transition:width .28s ease}
.route-board{display:grid;gap:clamp(5px,1.5vw,11px);width:min(100%,640px);margin:auto;touch-action:pan-y;position:relative;z-index:1}.tile{position:relative;aspect-ratio:1;border:3px solid #25224f;background:#d7ece4;color:var(--ink);padding:0;min-width:0;cursor:pointer;overflow:hidden;box-shadow:0 3px 0 rgba(23,21,47,.6);touch-action:pan-y}.tile.block{cursor:default;background:#79b5ad;border-color:#55978e;box-shadow:none}.tile.block:before,.tile.block:after{content:"";position:absolute;background:#4d8f88;border-radius:50%}.tile.block:before{width:35%;height:35%;left:16%;top:20%}.tile.block:after{width:22%;height:22%;right:13%;bottom:18%}.tile.reachable{background:#fff2ad;box-shadow:0 0 0 3px var(--sun),0 4px 0 #a36d33}.tile.checkpoint{border-color:#932f42}.tile.done{background:#82e3ba;border-color:#174f48}.tile.hint{animation:hintPulse .65s ease-in-out 3}.tile.star-tile{background:#f9df86}.bridge-arm{position:absolute;background:#5c4e77;z-index:1}.bridge-arm.n,.bridge-arm.s{width:23%;height:52%;left:38.5%}.bridge-arm.n{top:-3%}.bridge-arm.s{bottom:-3%}.bridge-arm.e,.bridge-arm.w{height:23%;width:52%;top:38.5%}.bridge-arm.e{right:-3%}.bridge-arm.w{left:-3%}.bridge-hub{position:absolute;width:29%;height:29%;left:35.5%;top:35.5%;background:#5c4e77;border-radius:3px;z-index:2}.tile.reachable .bridge-arm,.tile.reachable .bridge-hub{background:#ee775e}.gate-badge{position:absolute;z-index:3;inset:9% 7% auto;background:var(--paper);border:2px solid #312c59;padding:2px 1px;font-weight:900;font-size:clamp(.5rem,1.9vw,.72rem);line-height:1.03;text-align:center;overflow-wrap:anywhere}.gate-badge small{display:block;font-size:.82em;color:#8a3142}.star-mark{position:absolute;z-index:4;right:4%;bottom:1%;color:#6f4710;font-size:clamp(.8rem,4vw,1.6rem);filter:drop-shadow(0 1px #fff)}
.score-pop{position:absolute;left:50%;top:45%;z-index:5;transform:translate(-50%,-50%);font-weight:1000;font-size:clamp(1.8rem,8vw,4rem);color:var(--sun);text-shadow:3px 3px 0 var(--ink);pointer-events:none;opacity:0}.score-pop.show{animation:scorePop .8s ease-out}.board-world.danger{box-shadow:8px 8px 0 #0f0e27,0 0 0 4px var(--coral)}
.board-actions{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:10px;margin:14px 0}.utility-button{background:transparent}.status-text{margin:0;line-height:1.45;font-size:.9rem}.gate-list{list-style:none;padding:0;margin:8px 0 0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px}.gate-list li{background:#191735;border-left:5px solid #756eaa;padding:8px;font-size:.76rem;min-width:0}.gate-list li.complete{border-left-color:var(--mint);background:#173b3a}.gate-list b,.gate-list span{display:block;overflow-wrap:anywhere}.gate-list span{opacity:.8;margin-top:2px}
.stage-clear{position:fixed;z-index:20;inset:50% auto auto 50%;transform:translate(-50%,-50%);width:min(90vw,520px);background:#fff8dc;color:var(--ink);border:5px solid var(--ink);box-shadow:14px 14px 0 rgba(8,7,30,.65);padding:26px;text-align:center;overflow:hidden}.stage-clear>*{position:relative}.release-rays{position:absolute;inset:-60%;background:repeating-conic-gradient(from 10deg,var(--sun) 0 12deg,transparent 12deg 25deg);animation:slowTurn 12s linear infinite;opacity:.5}.stage-stamp{display:inline-block;background:var(--coral);color:#fff;padding:4px 10px;font-weight:1000;letter-spacing:.12em;transform:rotate(-2deg)}.stage-clear h3{font-size:clamp(1.7rem,6vw,2.7rem)}.stage-bonus{font-weight:900;color:#983b44}
.quiz-screen,.result-screen{display:flex;flex-direction:column;justify-content:center;background:linear-gradient(155deg,#25224f 0 55%,#403b78 55%);max-width:760px;margin:auto}.quiz-screen h2,.result-screen h2{font-size:clamp(2rem,8vw,3.7rem)}.quiz-count{font-weight:900;color:var(--sun)}.quiz-question{font-size:clamp(1.15rem,4vw,1.5rem);font-weight:900;line-height:1.55;overflow-wrap:anywhere}.quiz-listen{align-self:flex-start;margin-bottom:10px}.quiz-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.quiz-choices button{min-width:0;min-height:58px;border:3px solid var(--paper);background:#38346d;color:#fff;text-align:left;padding:11px;font-weight:800;overflow-wrap:anywhere;cursor:pointer}.quiz-choices button:disabled{opacity:.74}.quiz-feedback{margin-top:14px;background:var(--paper);color:var(--ink);padding:16px;border-left:8px solid var(--mint)}.quiz-feedback strong{font-size:1.25rem}.quiz-feedback p{line-height:1.55}
.result-screen{text-align:center;align-items:center}.result-kicker{background:var(--coral);color:#fff;padding:5px 11px}.result-clock{width:104px;height:104px;border:8px solid var(--paper);border-radius:50%;margin:16px;position:relative}.result-clock:before{content:"";position:absolute;width:9px;height:9px;background:var(--sun);border-radius:50%;left:50%;top:50%;transform:translate(-50%,-50%);z-index:2}.result-clock i,.result-clock b{position:absolute;left:50%;bottom:50%;width:5px;transform-origin:bottom;background:var(--sun)}.result-clock i{height:32px;transform:translateX(-50%) rotate(50deg)}.result-clock b{height:23px;transform:translateX(-50%) rotate(160deg)}.final-label{margin:0;font-size:.8rem;letter-spacing:.15em}.final-score{font-size:clamp(3.2rem,15vw,6rem);font-weight:1000;margin:0;color:var(--sun)}.result-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;width:100%;margin:10px 0}.result-facts div{background:#17152f;padding:9px}.result-facts dt{font-size:.72rem}.result-facts dd{margin:3px 0 0;font-size:1.2rem;font-weight:900}.result-message{max-width:600px;line-height:1.6}.best-line{margin:5px}.result-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}.ranking-panel{width:100%;margin-top:18px;background:#fff8dc;color:#17152f;padding:14px;text-align:left;max-height:62vh;overflow:auto}.ranking-panel .itc-ranking__tabs button{color:#17152f;background:#fff8dc}.ranking-panel .itc-ranking__tabs button[aria-pressed="true"]{color:#fff8dc;background:#302c62}.ranking-panel table{color:#17152f}
@keyframes hintPulse{50%{transform:scale(.9);background:#fff36c}}
@keyframes scorePop{0%{opacity:0;transform:translate(-50%,-20%) scale(.7)}25%{opacity:1}100%{opacity:0;transform:translate(-50%,-100%) scale(1.15)}}
@keyframes slowTurn{to{transform:rotate(1turn)}}
@media(max-width:620px){.screen{padding-left:12px;padding-right:12px}.sky-mark{top:10px}.sun-disc,.moon-disc{width:44px;height:44px}.mini-map{grid-template-columns:auto 1fr auto 1fr auto}.mini-map i:nth-of-type(2){display:none}.mini-map span{min-width:52px;min-height:52px;font-size:.7rem}.start-rules{display:grid;text-align:left}.mission-strip{align-items:stretch;flex-direction:column}.mission-strip .listen-button{align-self:flex-start}.board-world{padding-left:8px;padding-right:8px}.route-board{gap:4px}.tile{border-width:2px}.board-actions{grid-template-columns:1fr}.utility-button{width:100%}.gate-list{grid-template-columns:1fr}.gate-list li{display:grid;grid-template-columns:65px 1fr;gap:4px;text-align:left}.quiz-choices{grid-template-columns:minmax(0,1fr)}.result-facts{font-size:.84rem}.ranking-panel{position:relative;width:calc(100vw - 24px);max-width:100%;max-height:58vh}.ranking-panel .itc-ranking__table th,.ranking-panel .itc-ranking__table td{padding:.38rem .24rem;font-size:.78rem}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}}