*,*::before,*::after{box-sizing:border-box;border-radius:0}
:root{
  --ivory:#f4efe4; --paper:#fbf8f1; --ink:#22302b; --ink-soft:#5c6b64;
  --teal:#156579; --teal-2:#0e4c5c; --teal-br:#3f93a6; --gold:#d3961e; --green-d:#2a403c;
  --ff-d:"Arapey",Georgia,serif; --ff-b:"Libre Franklin",system-ui,sans-serif; --ff-c:"Barlow Semi Condensed",system-ui,sans-serif;
  --line:rgba(34,48,43,.16); --hair:rgba(34,48,43,.10);
}
html,body{margin:0;height:100%;background:#e7e2d6;color:var(--ink);font-family:var(--ff-b);overflow:hidden;-webkit-text-size-adjust:100%}
#app{position:fixed;inset:0}
#scene{position:absolute;inset:0;display:block;width:100%;height:100%;touch-action:none}
canvas{display:block}
.cap{font-family:var(--ff-c);text-transform:uppercase;letter-spacing:.18em}

/* loader */
#loader{position:absolute;inset:0;z-index:40;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1.3rem;
  background:radial-gradient(130% 100% at 50% 35%,#1d4f4a,#0d2420);color:#eef2ec;transition:opacity .7s ease,visibility .7s}
#loader.hidden{opacity:0;visibility:hidden}
#loader svg{width:54px;height:40px;overflow:visible}
#loader .nd{fill:#e7d49a}
#loader .ln{stroke:rgba(231,212,154,.5);stroke-width:1.2;fill:none;stroke-dasharray:60;stroke-dashoffset:60;animation:draw 1.4s var(--e,ease) infinite alternate}
@keyframes draw{to{stroke-dashoffset:0}}
#loader p{font-family:var(--ff-c);font-size:.66rem;letter-spacing:.32em;text-transform:uppercase;color:#ccb978;margin:0}

/* top */
.top{position:absolute;top:0;left:0;right:0;z-index:20;display:flex;align-items:flex-start;justify-content:space-between;
  padding:max(.85rem,env(safe-area-inset-top)) clamp(.85rem,3vw,1.5rem) 0;pointer-events:none;gap:.6rem}
.top>*{pointer-events:auto}
.brand{display:flex;align-items:center;gap:.6rem;background:rgba(251,248,241,.86);backdrop-filter:blur(8px);border:1px solid var(--line);padding:.4rem .65rem}
.brand img{height:26px;width:auto;display:block}
.brand b{font-family:var(--ff-c);font-size:.6rem;letter-spacing:.22em;text-transform:uppercase;color:var(--ink);font-weight:600;line-height:1.1;max-width:9ch}
.tr{display:flex;align-items:stretch;gap:.5rem}
.back{display:flex;align-items:center;font-family:var(--ff-c);font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink);text-decoration:none;
  background:rgba(251,248,241,.86);backdrop-filter:blur(8px);padding:.5rem .75rem;border:1px solid var(--line);transition:.18s}
.back:hover{background:#fff;color:var(--teal)}
.lang{display:inline-flex;border:1px solid var(--line);background:rgba(251,248,241,.86);backdrop-filter:blur(8px)}
.lang button{padding:.45rem .55rem;font-size:.64rem;font-weight:600;color:var(--ink-soft);font-family:var(--ff-c);letter-spacing:.08em;border:0;background:none;cursor:pointer}
.lang button.active{background:var(--teal);color:#fff}

/* dock */
.dock{position:absolute;left:50%;bottom:max(.9rem,env(safe-area-inset-bottom));transform:translateX(-50%);z-index:20;
  display:flex;background:rgba(251,248,241,.9);backdrop-filter:blur(12px);border:1px solid var(--line);box-shadow:0 14px 30px -20px rgba(20,36,31,.6)}
.dock button{display:inline-flex;align-items:center;gap:.4rem;border:0;border-left:1px solid var(--hair);background:none;cursor:pointer;color:var(--ink);
  font-family:var(--ff-c);font-weight:600;font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;padding:.62rem .8rem;transition:.16s;white-space:nowrap}
.dock button:first-child{border-left:0}
.dock button:hover{background:rgba(21,101,121,.1)}
.dock button.on{background:var(--teal);color:#fff}
.dock button svg{width:15px;height:15px}

/* labels */
#labels{position:absolute;inset:0;z-index:10;pointer-events:none;overflow:hidden}
.lab{position:absolute;transform:translate(-50%,-50%);pointer-events:auto;cursor:pointer;display:flex;align-items:center;gap:.4em;
  font-family:var(--ff-c);font-size:.58rem;letter-spacing:.13em;text-transform:uppercase;color:var(--ink);font-weight:600;
  background:rgba(251,248,241,.92);border:1px solid var(--line);padding:.22rem .5rem;white-space:nowrap;transition:opacity .25s,background .18s,color .18s}
.lab .d{width:6px;height:6px;flex:none}
.lab:hover,.lab.active{background:var(--gold);color:#22302b;border-color:var(--gold)}

/* panel */
.panel{position:absolute;top:0;right:0;z-index:25;width:min(348px,88vw);height:100%;
  background:rgba(251,248,241,.96);backdrop-filter:blur(16px);border-left:1px solid var(--line);
  padding:max(4.6rem,calc(env(safe-area-inset-top) + 3.4rem)) clamp(1.2rem,3vw,1.7rem) 1.6rem;
  transform:translateX(101%);transition:transform .45s cubic-bezier(.16,1,.3,1);overflow-y:auto}
.panel.open{transform:none}
.panel .x{position:absolute;top:1rem;right:1rem;width:34px;height:34px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:1.05rem;line-height:1;color:var(--ink)}
.panel .k{font-family:var(--ff-c);font-size:.62rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold)}
.panel h2{font-family:var(--ff-d);font-weight:400;font-size:1.62rem;margin:.45rem 0 .7rem;line-height:1.12;letter-spacing:.01em}
.panel p{color:var(--ink-soft);font-size:.9rem;line-height:1.62;margin:0 0 1rem}
.panel .tags{display:flex;flex-wrap:wrap;gap:.35rem;margin-top:.3rem}
.panel .tags span{font-family:var(--ff-c);font-size:.6rem;letter-spacing:.1em;text-transform:uppercase;padding:.26rem .55rem;border:1px solid var(--line);color:var(--ink-soft)}
.panel .leg{margin-top:1.7rem;border-top:1px solid var(--hair);padding-top:1.2rem}
.panel .leg h3{font-family:var(--ff-c);font-size:.6rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink);margin:0 0 .7rem}
.panel .leg button{display:flex;align-items:center;gap:.55rem;width:100%;text-align:left;border:0;background:none;cursor:pointer;
  padding:.32rem .15rem;font-family:var(--ff-b);font-size:.84rem;color:var(--ink-soft);transition:.16s}
.panel .leg button:hover{background:rgba(21,101,121,.09);color:var(--ink)}
.panel .leg .d{width:10px;height:10px;flex:none}

/* hint */
.hint{position:absolute;left:50%;bottom:calc(max(.9rem,env(safe-area-inset-bottom)) + 52px);transform:translateX(-50%);z-index:15;
  font-family:var(--ff-c);font-size:.58rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft);
  background:rgba(251,248,241,.74);padding:.28rem .65rem;text-align:center;transition:opacity .4s}
.hint.gone{opacity:0}

@media (max-width:760px){
  .dock button span{display:none}
  .dock button{padding:.66rem .72rem;gap:0}
  .dock button svg{width:17px;height:17px}
  .brand b{display:none}
  .lab{font-size:.54rem;padding:.2rem .42rem}
}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
@media (prefers-reduced-motion:reduce){#loader,.panel,.lab,#loader .ln{transition:none;animation:none}}
.vign{position:absolute;inset:0;z-index:5;pointer-events:none;background:radial-gradient(125% 105% at 50% 40%, rgba(0,0,0,0) 52%, rgba(6,20,24,.26) 80%, rgba(4,13,17,.5) 100%)}

/* September 2026 — quiet controls, generous space for the architecture. */
:root{--ivory:#f4f6f3;--paper:#f4f6f3;--ink:#18323d;--ink-soft:#59717b;--line:#ffffff24;--hair:#ffffff1c;--gold:#c6c49d}
html,body{background:#c8d8df}
.top{padding:20px 24px;align-items:center}
.brand{background:#14323de8;border:1px solid #ffffff26;padding:9px 13px;gap:12px;border-radius:8px}
.brand img{height:33px}.brand b{max-width:none;color:#e6eff0;font-size:12px;letter-spacing:.1em}
.back,.lang{background:#14323de8;color:#eff4f3;border-radius:8px}.back{font-size:14px;min-height:44px;letter-spacing:.04em;padding:10px 16px}.lang{overflow:hidden}.lang button{min-width:42px;font-size:14px;color:#d0dde0}.lang button.active{background:#f3f5ed;color:#153b4a}
.vign{background:linear-gradient(180deg,#14323d18,transparent 22%,transparent 74%,#173b4b32)}
.scene-heading{position:absolute;z-index:12;top:94px;left:26px;pointer-events:none;text-shadow:0 1px 12px #e9f0f4a8}
.scene-heading>span{font-family:var(--ff-c);letter-spacing:.16em;font-size:12px;text-transform:uppercase;color:#294955}
.scene-heading h1{font-family:var(--ff-d);font-size:clamp(24px,2.9vw,42px);font-weight:400;line-height:1.08;max-width:370px;margin:8px 0 16px;color:#153748}
.scene-heading select{pointer-events:auto;background:#f6f8f3ed;border:1px solid #1b4a5b2d;border-radius:7px;box-shadow:0 7px 20px #264a5910;color:#1e4553;font:500 14px var(--ff-b);height:44px;max-width:240px;padding:0 30px 0 13px}
.view-nav{position:absolute;bottom:90px;left:50%;transform:translateX(-50%);z-index:20;display:flex;gap:5px;max-width:calc(100% - 24px);padding:5px;border:1px solid #ffffff33;border-radius:9px;background:#163846e6;backdrop-filter:blur(14px)}
.view-nav button{border:0;background:none;color:#e9f1f2;font:500 14px var(--ff-c);white-space:nowrap;min-height:40px;padding:8px 17px;border-radius:5px;cursor:pointer}
.view-nav button[aria-pressed=true]{background:#f0f2e7;color:#133743}
.dock{bottom:max(22px,env(safe-area-inset-bottom));border-radius:9px;background:#163846ed;border:1px solid #ffffff2c;box-shadow:0 12px 38px #143c4c29;overflow:hidden;max-width:calc(100% - 24px)}
.dock button{min-height:48px;color:#e4eef0;padding:10px 18px;font-size:14px;letter-spacing:.015em;text-transform:none;gap:7px}.dock button.on{background:#eff2e7;color:#143845}.dock button:hover{background:#66828d40}.dock button.on:hover{background:#eff2e7}.dock button svg{width:18px;height:18px}
.hint{left:auto;right:24px;bottom:25px;transform:none;background:transparent;color:#244c5d;padding:0;font-size:12px;letter-spacing:.02em;max-width:150px;line-height:1.5;text-align:right}
.lab{font-size:13px;letter-spacing:.01em;text-transform:none;border-radius:5px;background:#f4f7f1ed;padding:6px 10px;border-color:#476b723b;box-shadow:0 3px 12px #1a3b4a15;min-height:34px}.lab .d{display:none}
.panel{width:min(340px,88vw);background:#f3f6f3f5;padding-top:76px;border-color:#2d525525;box-shadow:-12px 0 60px #173f4f1a}.panel .x{width:44px;height:44px;border-radius:6px}.panel .k{font-size:13px;color:#45616b;letter-spacing:.1em}.panel h2{font-size:32px;color:#163f4e}.panel p{font-size:16px;line-height:1.6}.panel .tags span{font-size:12px;background:#e4eae5;border:0;letter-spacing:.01em;text-transform:none;border-radius:4px;padding:7px}.panel .leg button{min-height:44px;font-size:15px}.panel .leg h3{font-size:13px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.night-view .scene-heading{ text-shadow:0 2px 18px #09182880}.night-view .scene-heading h1,.night-view .scene-heading>span,.night-view .hint{color:#e1edf0}
@media(max-width:1000px){.hint{display:none}}
@media(max-width:760px){
 .top{padding:12px;gap:8px}.brand{padding:6px 9px}.brand img{height:27px}.brand b{display:none}.tr{gap:6px}.back{font-size:13px;padding:8px 12px}.lang button{min-width:34px;font-size:13px}
 .scene-heading{top:83px;left:16px;right:16px}.scene-heading>span{font-size:11px;letter-spacing:.12em}.scene-heading h1{font-size:27px;margin:6px 0 11px}.scene-heading select{font-size:14px;height:42px;max-width:215px}
 .view-nav{bottom:calc(max(12px,env(safe-area-inset-bottom)) + 66px);width:max-content;gap:2px;padding:4px}.view-nav button{font-size:14px;min-height:40px;padding:6px 12px}
 .dock{bottom:max(12px,env(safe-area-inset-bottom));width:calc(100% - 24px);max-width:430px;justify-content:space-evenly}.dock button{flex:1;flex-direction:column;gap:4px;padding:8px 5px;min-height:57px;font-size:13px;line-height:1.1;letter-spacing:0}.dock button span{display:inline}.dock button svg{width:18px;height:18px}
 .lab{font-size:12px;padding:5px 7px}.panel{width:100%;max-height:44%;height:auto;top:auto;bottom:0;transform:translateY(101%);padding:22px 24px 30px;border-radius:16px 16px 0 0}.panel.open{transform:none}.panel h2{max-width:85%;font-size:28px}.panel .x{top:12px;right:12px}.panel .leg{margin-top:16px}
}
@media(max-height:520px){.scene-heading{top:75px}.scene-heading h1{display:none}.scene-heading>span{display:none}.view-nav{left:16px;transform:none;bottom:14px}.dock{left:auto;right:16px;transform:none;width:auto;bottom:14px}.dock button{flex-direction:row;min-height:44px}.dock button span{display:none}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}