:root{color:#eef6f8;font-synthesis:none;text-rendering:optimizelegibility;--ink:#eef6f8;--quiet:#d3e3ea;--panel:#081e2cc7;--line:#d6eef642;--disc:#e7f1f3;--disc-ink:#0e2a3a;--cinema-bar:clamp(24px, 7svh, 90px);background:#04121f;font-family:Avenir Next,Avenir,sans-serif}*{box-sizing:border-box}html,body,#abyss{width:100%;height:100%;margin:0;overflow:hidden}body{background:radial-gradient(120% 90% at 50% 0,#1d6f93 0%,#083452 45%,#03111d 100%);min-width:280px}#abyss{isolation:isolate;position:relative}#abyss:before,#abyss:after{content:"";height:var(--cinema-bar);z-index:1;pointer-events:none;background:#000;position:absolute;left:0;right:0}#abyss:before{top:0}#abyss:after{bottom:0}::selection{color:#062033;background:#9fdcf0}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{color:inherit;cursor:pointer}button:disabled{cursor:wait;opacity:.55}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--ink);outline-offset:5px}.water{touch-action:none;cursor:grab;width:100%;height:100%;display:block;position:absolute;inset:0}.water[data-turning=true]{cursor:grabbing}.water[hidden],.static-view[hidden]{display:none}.static-view{object-fit:cover;object-position:50% 50%;width:100%;height:100%;position:absolute;inset:0}.frame{z-index:2;pointer-events:none;height:100%;position:relative}.topbar{inset:calc(var(--cinema-bar) + 28px) 36px auto;justify-content:flex-end;align-items:center;gap:18px;display:flex;position:absolute}.depth-gauge{font-variant-numeric:tabular-nums;letter-spacing:.04em;min-width:76px;color:var(--quiet);text-shadow:0 1px 10px #000a1499;justify-content:flex-end;align-items:baseline;gap:4px;margin:0;font-size:13px;display:flex}.depth-value{color:var(--ink);font-size:17px}.depth-unit{opacity:.75}.zones{--zone-position:0;isolation:isolate;border:1px solid var(--line);background:var(--panel);pointer-events:auto;border-radius:24px;align-items:center;gap:3px;padding:3px;transition:background-color .65s,border-color .65s;display:flex;position:relative}.zones:before{content:"";z-index:-1;background:var(--disc);pointer-events:none;width:44px;height:44px;transform:translateX(calc(var(--zone-position) * 47px));border-radius:50%;transition:transform .65s cubic-bezier(.16,1,.3,1),background-color .65s;position:absolute;top:3px;left:3px}#abyss[data-zone=twilight] .zones{--zone-position:1}#abyss[data-zone=midnight] .zones{--zone-position:2}.zones button{color:#d7e7ec;background:0 0;border:0;border-radius:50%;place-items:center;width:44px;height:44px;padding:0;transition:background-color .3s,color .45s;display:grid}.zones svg{width:21px;height:21px}.zones button[aria-pressed=true]{color:var(--disc-ink)}.zones button:hover{color:#fff;background:#dcf0f624}.zones button[aria-pressed=true]:hover{color:var(--disc-ink);background:#f0fafc33}.poem{left:36px;bottom:calc(var(--cinema-bar) + 30px);position:absolute}.poem h1{letter-spacing:-.025em;text-shadow:0 2px 16px #020c1699;margin:0;font-family:Baskerville,Palatino Linotype,Palatino,Georgia,serif;font-size:clamp(26px,2.5vw,40px);font-weight:400;line-height:1.12}.poem p{color:var(--quiet);text-shadow:0 2px 10px #020c16cc;margin:10px 0 0;font-family:Baskerville,Palatino Linotype,Palatino,Georgia,serif;font-size:16px;font-style:italic}.cycle-replay{white-space:nowrap;pointer-events:auto;opacity:1;visibility:visible;transition:opacity .65s ease-out,transform .65s cubic-bezier(.16,1,.3,1),visibility;position:absolute;bottom:calc(100% + 16px);left:0;transform:translateY(0)}.cycle-replay[hidden]{opacity:0;visibility:hidden;pointer-events:none;transition:opacity .35s ease-in,transform .35s ease-in,visibility 0s .35s;display:inline-flex;transform:translateY(6px)}.interaction-hint{top:calc(var(--cinema-bar) + 106px);text-align:center;letter-spacing:.015em;color:#e4f1f4;opacity:.9;text-shadow:0 1px 8px #02101ce6;width:min(440px,100% - 40px);font-size:11px;line-height:1.6;transition:opacity .6s;position:absolute;left:50%;transform:translate(-50%)}.interaction-hint.is-used{opacity:0}.toolbar{bottom:calc(var(--cinema-bar) + 34px);pointer-events:auto;align-items:center;gap:8px;display:flex;position:absolute;right:36px}.tool{border:1px solid var(--line);background:var(--panel);min-width:42px;height:42px;color:var(--ink);border-radius:24px;justify-content:center;align-items:center;gap:8px;padding:0 13px;font-size:11px;text-decoration:none;display:inline-flex}.tool:hover{background:#284c5ee6}.tool svg{flex:none;width:16px;height:16px}.tool[aria-pressed=true]{border-color:#9fdcf0}.audio-panel{align-items:center;gap:10px;display:flex}.volume{accent-color:#9fdcf0;cursor:pointer;width:55px;height:24px}.credits{height:var(--cinema-bar);letter-spacing:.03em;color:#c8d6dc8c;text-align:center;pointer-events:auto;place-items:center;margin:0;padding:0 16px;font-size:10px;line-height:1.4;display:grid;position:absolute;bottom:0;left:0;right:0}.credits>span{white-space:nowrap}.credits a{color:inherit;text-underline-offset:2px}.credits a:hover{color:#e6f2f5}.status{color:#eef8fa;text-align:center;background:var(--panel);pointer-events:auto;border-radius:12px;max-width:330px;padding:20px 24px;font-size:13px;line-height:1.7;position:absolute;top:49%;left:50%;transform:translate(-50%,-50%)}.status:empty{display:none}.status a{color:inherit;text-underline-offset:3px}.sound-choice{color:#eef6f8;text-align:center;opacity:0;width:min(360px,100vw - 40px);max-height:calc(100svh - 40px);transition:opacity .22s ease, transform .35s cubic-bezier(.16, 1, .3, 1), display .22s allow-discrete, overlay .22s allow-discrete;background:#0b2433;border:1px solid #3f6272;border-radius:16px;margin:auto;padding:28px;transform:translateY(6px);box-shadow:0 18px 60px #00080e66}.sound-choice[open]{opacity:1;transform:translateY(0)}.sound-choice::backdrop{opacity:0;transition:opacity .22s ease, display .22s allow-discrete, overlay .22s allow-discrete;background:#000a126b}.sound-choice[open]::backdrop{opacity:1}@starting-style{.sound-choice[open]{opacity:0;transform:translateY(6px)}.sound-choice[open]::backdrop{opacity:0}}.sound-choice-actions{gap:10px;display:grid}.sound-choice button{border-radius:8px;min-height:46px;padding:10px 14px;font-size:13px;transition:background-color .18s}.sound-choice-enable{color:#0e2a3a;background:#e7f1f3;border:1px solid #e7f1f3}.sound-choice-enable:hover{background:#fff}.sound-choice-silent{color:#eef6f8;background:0 0;border:1px solid #4d6f7d}.sound-choice-silent:hover{background:#163a4b}.sr-only{clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}[data-zone=twilight]{--panel:#051224d1;--line:#aac8f03d;--disc:#c9d9f2;--disc-ink:#0a1a33}[data-zone=midnight]{--ink:#dfe9f5;--quiet:#b9cce0;--panel:#02060edb;--line:#78aaff42;--disc:#7fb6ff;--disc-ink:#020a18}[data-immersed=true] .topbar,[data-immersed=true] .poem,[data-immersed=true] .interaction-hint,[data-immersed=true] .audio-panel,[data-immersed=true] .pause-toggle,[data-immersed=true] .social-link,[data-immersed=true] .about-toggle{display:none}[data-immersed=true] .immerse-toggle{opacity:.35}[data-immersed=true] .immerse-toggle:hover,[data-immersed=true] .immerse-toggle:focus-visible{opacity:1}@media (width<=700px){.topbar{inset:calc(var(--cinema-bar) + 16px) 18px auto;gap:12px}.depth-gauge{min-width:60px}.poem{left:22px;bottom:calc(var(--cinema-bar) + 92px)}.poem h1{font-size:31px}.poem p{font-size:15px}.toolbar{left:20px;right:20px;bottom:calc(var(--cinema-bar) + max(22px, env(safe-area-inset-bottom)));justify-content:flex-end}.audio-panel{gap:6px;margin-right:auto}.volume{width:43px}.tool{min-width:44px;height:44px;padding:0 12px}.interaction-hint{top:calc(var(--cinema-bar) + 91px);font-size:10px}.credits{font-size:9px}}@media (width<=480px){.credit-detail{display:none}}@media (width<=340px){.credits{letter-spacing:0;font-size:8px}}@media (width<=360px){.volume,.depth-gauge{display:none}}@media (prefers-reduced-motion:reduce){*{transition:none!important}.sound-choice,.sound-choice[open]{transform:none}.sound-choice::backdrop,.zones:before{transition:none}.cycle-replay{transform:none;transition:opacity .15s linear,visibility!important}.cycle-replay[hidden]{transform:none;transition:opacity .15s linear,visibility 0s .15s!important}}@media (width<=360px){.social-link{display:none}}