:root{--bg: #050508;--ink: #edf7ff;--ink-dim: #8aa4b7;--line: rgba(255, 255, 255, .1);--panel: rgba(6, 10, 18, .78);--accent: #dddfe3;--accent-dim: #555a63;--guidance-ink: rgba(221, 247, 255, .96);--guidance-dim: rgba(150, 205, 222, .82);--guidance-cyan: #83e8ff;--guidance-warm: #ffd28a}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;overflow:hidden;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,Segoe UI,sans-serif;font-size:13px;-webkit-font-smoothing:antialiased}body.exhibition-running{cursor:none}body.exhibition-running.manual-input{cursor:default}#scene{position:fixed;top:0;right:0;bottom:0;left:0;display:block;touch-action:none}body:after{content:"";position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;background:radial-gradient(ellipse at 50% 45%,transparent 55%,rgba(0,0,0,.5) 100%)}.hidden{display:none!important}.start-screen{position:fixed;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;z-index:20;background:radial-gradient(circle at 50% 45%,rgba(28,149,202,.08),transparent 32%),#0103085c;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.start-card{width:min(560px,calc(100vw - 48px));padding:58px 56px 38px;text-align:center;background:linear-gradient(145deg,#08111de0,#050810a3);border:1px solid rgba(148,222,255,.16);box-shadow:0 32px 100px #00000094,inset 0 1px #ffffff09}.start-beacon{position:relative;width:164px;height:124px;margin:0 auto 30px;overflow:hidden}.start-beacon:before,.start-beacon:after{content:"";position:absolute;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(104,218,246,.38),transparent)}.start-beacon:before{bottom:25px}.start-beacon:after{bottom:16px;opacity:.48}.start-beacon-lamp{position:absolute;left:77px;top:20px;width:10px;height:10px;border-radius:50%;background:#fff5d7;box-shadow:0 0 8px #fff2c8,0 0 24px #ffc05ebd,0 0 52px #ffb84e47;animation:start-lamp-breathe 2.8s ease-in-out infinite}.start-beacon-tower{position:absolute;left:72px;top:31px;width:20px;height:68px;clip-path:polygon(30% 0,70% 0,100% 100%,0 100%);background:repeating-linear-gradient(0deg,transparent 0 7px,rgba(139,228,248,.56) 8px 9px),linear-gradient(90deg,transparent,rgba(116,220,245,.26),transparent);filter:drop-shadow(0 0 7px rgba(80,208,244,.22))}.start-beacon-beam{position:absolute;left:81px;top:23px;width:118px;height:7px;transform-origin:0 50%;background:linear-gradient(90deg,rgba(255,231,170,.5),rgba(255,213,130,.08),transparent);filter:blur(1px);animation:start-beam-sweep 5.6s ease-in-out infinite alternate}.start-beacon-water{position:absolute;left:20px;right:20px;bottom:7px;height:20px;background:radial-gradient(ellipse at 50% 0,rgba(255,208,121,.28),transparent 25%),repeating-radial-gradient(ellipse at 50% 0,transparent 0 7px,rgba(97,215,243,.18) 8px 9px,transparent 10px 15px);opacity:.8}@keyframes start-beam-sweep{0%{transform:rotate(-18deg) scaleX(.74);opacity:.28}48%{opacity:.74}to{transform:rotate(18deg) scaleX(1);opacity:.38}}@keyframes start-lamp-breathe{0%,to{transform:scale(.86);opacity:.78}50%{transform:scale(1.14);opacity:1}}.start-kicker{color:#78d8ff;font-size:10px;letter-spacing:.32em;margin-bottom:13px}.start-card h1{font-size:clamp(30px,4vw,46px);font-weight:300;letter-spacing:.22em;margin-right:-.22em}.start-intro{margin:16px 0 34px;color:var(--ink-dim);font-size:14px;letter-spacing:.08em}.start-buttons{display:flex;justify-content:center;gap:12px}button{font:inherit;cursor:pointer;color:var(--ink);background:transparent;border:1px solid var(--line);padding:11px 22px;letter-spacing:.06em;transition:background .2s,border-color .2s,box-shadow .2s}button:focus-visible{outline:1px solid var(--ink-dim);outline-offset:2px}.btn-primary{background:#87defff0;border-color:#87defff0;color:#04101a;font-weight:500;box-shadow:0 0 30px #47c1ff1f}.btn-primary:hover:not(:disabled){background:#d8f5ff;border-color:#d8f5ff;box-shadow:0 0 38px #47c1ff3d}.btn-primary:disabled{opacity:.45;cursor:wait}.btn-ghost:hover{border-color:var(--ink-dim);color:#fff}.start-note{margin:12px auto 0;font-size:12px;color:var(--ink-dim);min-height:1.3em;max-width:340px;line-height:1.35}.privacy-note{margin-top:20px;color:#a3bed080;font-size:10px;letter-spacing:.04em}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:10}.overlay>*{pointer-events:auto}.overlay.exhibition:not(.maintenance) .toast{display:none}.hud{position:absolute;top:14px;left:14px;padding:10px 12px;background:var(--panel);border:1px solid var(--line);min-width:150px}.hud-row{display:flex;justify-content:space-between;gap:16px;font-size:12px;line-height:1.65;font-variant-numeric:tabular-nums}.hud-label{color:var(--ink-dim)}.hud-state{transition:color .3s}.hud-keys{margin-top:8px;padding-top:6px;border-top:1px solid var(--line);font-size:10px;color:var(--accent-dim)}.panel{position:absolute;top:14px;right:14px;width:min(360px,calc(100vw - 28px));padding:14px 16px;background:var(--panel);border:1px solid var(--line)}.panel h2{font-size:13px;font-weight:500;color:var(--ink-dim);margin-bottom:10px}.panel table{width:100%;border-collapse:collapse;font-size:12px}.panel td{padding:4px 0;vertical-align:top;line-height:1.45}.panel td:first-child{color:var(--ink-dim);padding-right:14px;white-space:nowrap}.help-note{margin-top:8px;font-size:11px;color:var(--ink-dim)}.help-note code{color:var(--ink);font-family:ui-monospace,monospace;font-size:10.5px}.setting-row{display:flex;align-items:center;justify-content:space-between;padding:6px 0;font-size:12px}.seg{display:flex}.seg button{padding:5px 10px;font-size:11px;border-right-width:0}.seg button:last-child{border-right-width:1px}.seg button.active{background:var(--ink);border-color:var(--ink);color:#0a0a0c}.toggle{width:36px;height:18px;position:relative;padding:0;border-color:var(--accent-dim)}.toggle:after{content:"";position:absolute;top:2px;left:2px;width:12px;height:12px;background:var(--accent-dim);transition:transform .12s,background .12s}.toggle.on{border-color:var(--ink-dim)}.toggle.on:after{transform:translate(18px);background:var(--ink)}.setting-row em{font-style:normal;color:var(--ink-dim);margin-left:4px;font-variant-numeric:tabular-nums}input[type=range]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:120px;height:1px;background:var(--line);outline:none}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:10px;height:10px;background:var(--ink);cursor:pointer}input[type=range]::-moz-range-thumb{width:10px;height:10px;background:var(--ink);border:none;cursor:pointer;border-radius:0}input[type=range]:disabled{opacity:.35}input[type=range]:disabled::-webkit-slider-thumb{cursor:default}.param-root{margin-top:12px;border-top:1px solid var(--line);padding-top:8px}.param-root>summary,.param-group>summary{cursor:pointer;list-style:none;font-size:11px;color:var(--ink-dim);padding:3px 0;-webkit-user-select:none;user-select:none}.param-root>summary::-webkit-details-marker,.param-group>summary::-webkit-details-marker{display:none}.param-root>summary:before,.param-group>summary:before{content:"+ ";color:var(--accent-dim)}.param-root[open]>summary:before,.param-group[open]>summary:before{content:"− "}.param-body{max-height:46vh;overflow-y:auto;padding-right:4px}.param-group{margin:3px 0}.param-group>summary{font-size:10.5px}.param-row{display:grid;grid-template-columns:1fr 96px 42px;align-items:center;gap:8px;padding:2px 0 2px 8px;font-size:11px;color:var(--ink-dim)}.param-row input[type=range]{width:96px}.param-value{text-align:right;color:var(--ink);font-variant-numeric:tabular-nums}.param-reset{margin:8px 0 2px;width:100%;font-size:11px;padding:6px}.param-reset:hover{border-color:var(--ink-dim)}.param-hint{font-size:10px;color:var(--accent-dim);margin:6px 0 2px;line-height:1.4}.param-body::-webkit-scrollbar{width:4px}.param-body::-webkit-scrollbar-thumb{background:var(--line)}.webcam-panel{position:absolute;right:clamp(14px,2vw,30px);bottom:clamp(14px,2.4vh,28px);z-index:8;width:min(22vw,300px);min-width:210px;overflow:hidden;border:1px solid rgba(129,218,255,.24);border-radius:3px;background:#030a11eb;box-shadow:0 16px 46px #0000006b,0 0 28px #41bdf00f;transition:opacity .45s ease,transform .45s ease,border-color .35s ease,box-shadow .35s ease}.webcam-panel.webcam-panel.hidden{opacity:0;transform:translateY(12px);pointer-events:none}body:not(.exhibition-running) .webcam-panel,body:not(.exhibition-running) .exhibition-status{opacity:0;pointer-events:none}.webcam-panel.tracking{border-color:#76e2ff7a;box-shadow:0 16px 46px #0000006b,0 0 34px #41ccff24}.webcam-panel canvas{display:block;width:100%;height:auto;opacity:.86}.webcam-label{position:absolute;top:6px;left:8px;font-size:10px;letter-spacing:.12em;color:#dcf4ffb8;text-shadow:0 1px 6px rgba(0,0,0,.8)}.webcam-label:before{content:"";display:inline-block;width:5px;height:5px;margin:0 6px 1px 0;border-radius:50%;background:#94b2c0b3}.webcam-panel.tracking .webcam-label:before{background:#78e5ff;box-shadow:0 0 8px #5cdbffe6}.sound-toggle{position:fixed;top:clamp(14px,2vw,28px);right:clamp(14px,2vw,30px);z-index:9;display:flex;align-items:center;gap:8px;padding:8px 11px;border-color:#7edaff2e;border-radius:999px;color:#d2effa9e;background:#040c146b;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);font-size:10px;letter-spacing:.08em;opacity:0;pointer-events:none;transition:opacity .45s ease,border-color .25s ease,color .25s ease}body.exhibition-running .sound-toggle{opacity:1;pointer-events:auto}.sound-toggle:hover{color:#e6f9ffe6;border-color:#7edaff5c}.sound-toggle i{width:6px;height:6px;border-radius:50%;background:#7ee4ff;box-shadow:0 0 9px #58d7ffc2}.sound-toggle.muted i{background:#92a5ae8c;box-shadow:none}.toast{position:absolute;bottom:22px;left:50%;transform:translate(-50%);padding:8px 14px;background:var(--panel);border:1px solid var(--line);font-size:12px;max-width:min(480px,calc(100vw - 32px));text-align:center;color:var(--ink-dim)}.exhibition-status{position:fixed;left:clamp(56px,7vw,280px);bottom:clamp(118px,17vh,320px);z-index:9;display:flex;align-items:center;gap:clamp(16px,1.5vw,28px);width:min(660px,52vw);min-width:0;padding:12px 0;color:var(--guidance-ink);filter:drop-shadow(0 3px 12px rgba(0,7,14,.72));transition:opacity .8s ease,transform .8s ease,filter .5s ease}.exhibition-status:before{content:"";position:absolute;z-index:-1;top:-38px;right:-76px;bottom:-38px;left:-46px;pointer-events:none;background:radial-gradient(ellipse at 28% 50%,rgba(2,12,21,.58) 0%,rgba(3,14,23,.3) 45%,transparent 76%);filter:blur(10px)}.exhibition-status.guidance-hidden{opacity:0;transform:translateY(14px);pointer-events:none}.exhibition-status.guidance-minimal{width:auto}.exhibition-status.guidance-minimal .presence-copy span{display:none}.gesture-glyph{position:relative;width:clamp(58px,4.2vw,78px);height:clamp(58px,4.2vw,78px);flex:0 0 auto;color:var(--guidance-cyan);filter:drop-shadow(0 0 8px rgba(91,219,255,.36))}.gesture-trace{width:100%;height:100%;overflow:visible;fill:#63def809;stroke:currentColor;stroke-width:1.55;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:1.1 2.2;animation:gesture-particles 3.4s linear infinite}.gesture-push .gesture-glyph{animation:gesture-push 1.75s ease-in-out infinite}.gesture-sweep-left .gesture-glyph{animation:gesture-sweep-left 1.8s ease-in-out infinite}.gesture-sweep-right .gesture-glyph{animation:gesture-sweep-right 1.8s ease-in-out infinite}.gesture-arrival-spread .gesture-glyph{animation:gesture-spread 1.7s ease-in-out infinite alternate}.gesture-calibrate .gesture-glyph{animation:gesture-calibrate 1.8s ease-in-out infinite}.gesture-beacon .gesture-glyph{color:var(--guidance-warm);animation:gesture-beacon 1.45s ease-out infinite}.gesture-harbor .gesture-glyph{color:var(--guidance-warm)}.presence-copy{min-width:0}.presence-copy p{font-size:clamp(30px,1.8vw,50px);font-weight:350;line-height:1.2;letter-spacing:.13em;text-wrap:balance;text-shadow:0 0 18px rgba(92,218,250,.16)}.presence-copy span{display:block;margin-top:clamp(8px,.75vw,14px);color:var(--guidance-dim);font-size:clamp(16px,.9vw,26px);font-weight:350;line-height:1.45;letter-spacing:.11em}.recognition-mark{display:none}.exhibition-status.recognized .recognition-mark{background:#83edff;box-shadow:0 0 13px #63dfffdb;transform:scale(1.24)}.exhibition-status.recognized .gesture-glyph,.exhibition-status.recognized .presence-copy p{color:var(--guidance-warm);text-shadow:0 0 20px rgba(255,198,103,.22)}.exhibition-status.arrival .gesture-glyph,.exhibition-status.harbor .gesture-glyph{color:var(--guidance-warm)}.scene-transition{position:fixed;top:0;right:0;bottom:0;left:0;z-index:18;pointer-events:none;opacity:0;background:#010207;transition:opacity .85s ease-in-out}.scene-transition.active{opacity:1}@keyframes gesture-particles{to{stroke-dashoffset:-20}}@keyframes gesture-push{0%,to{transform:scale(.84);opacity:.72}48%{transform:scale(1.08);opacity:1;box-shadow:0 0 14px #47d5ff33}}@keyframes gesture-sweep-left{0%,to{transform:translate(4px)}50%{transform:translate(-4px)}}@keyframes gesture-sweep-right{0%,to{transform:translate(-4px)}50%{transform:translate(4px)}}@keyframes gesture-pinch-left{0%,to{transform:rotate(-10deg)}50%{transform:translate(3px,3px) rotate(22deg)}}@keyframes gesture-pinch-right{0%,to{transform:rotate(10deg)}50%{transform:translate(-3px,3px) rotate(-22deg)}}@keyframes gesture-spread{0%{transform:scale(.86);opacity:.7}to{transform:scale(1.06);opacity:1}}@keyframes gesture-calibrate{0%,to{box-shadow:inset 0 0 #63deff00}50%{box-shadow:inset 0 0 16px #63deff4d}}@keyframes gesture-beacon{0%,to{box-shadow:0 0 #ffc76600}45%{box-shadow:0 0 18px #ffc76657}}.fatal{position:fixed;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;padding:24px;text-align:center;color:var(--ink-dim);line-height:1.6}@media (min-width: 2800px) and (min-height: 1500px){.start-card{width:min(900px,calc(100vw - 96px));padding:92px 88px 62px}.start-beacon{transform:scale(1.55);margin-bottom:66px}.start-kicker{font-size:16px;margin-bottom:20px}.start-card h1{font-size:76px}.start-intro{margin:26px 0 50px;font-size:23px}.start-buttons{gap:20px}.start-buttons button{padding:18px 34px;font-size:20px}.start-note{margin-top:20px;max-width:600px;font-size:18px}.privacy-note{margin-top:30px;font-size:16px}.webcam-panel{right:60px;bottom:56px;width:min(22vw,520px);min-width:420px;border-width:2px}.webcam-label{top:11px;left:14px;font-size:16px}.webcam-label:before{width:8px;height:8px;margin-right:10px}.sound-toggle{top:56px;right:60px;gap:12px;padding:13px 18px;font-size:16px;border-width:2px}.sound-toggle i{width:10px;height:10px}}@media (max-width: 640px){.hud{top:10px;left:10px}.panel{top:10px;right:10px}.webcam-panel{width:40vw;min-width:160px;right:10px;bottom:10px}.exhibition-status{left:24px;bottom:max(96px,15vh);width:calc(100vw - 48px);gap:12px}.gesture-glyph{width:50px;height:50px}.presence-copy p{font-size:24px}.presence-copy span{font-size:14px}.exhibition-status.guidance-hidden{transform:translateY(12px)}.start-buttons{flex-direction:column;width:100%}.start-buttons button{width:100%}.start-card{padding:40px 28px 28px}}@media (prefers-reduced-motion: reduce){*{transition:none!important}}#boot-status{position:fixed;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;z-index:50;background:#041c27;color:#edf7ff;font:300 15px/1.6 system-ui,sans-serif;letter-spacing:.06em}body.mobile-experience{height:100dvh;-webkit-text-size-adjust:100%}.mobile-experience button{-webkit-tap-highlight-color:transparent;touch-action:manipulation}.mobile-experience .hud,.mobile-experience .panel{display:none!important}.mobile-experience .toast{max-width:calc(100vw - 40px);bottom:max(24px,env(safe-area-inset-bottom));white-space:normal}.mobile-start-screen{min-height:100dvh;overflow-y:auto;padding:max(72px,env(safe-area-inset-top)) max(28px,env(safe-area-inset-right)) max(28px,env(safe-area-inset-bottom)) max(28px,env(safe-area-inset-left));background:linear-gradient(160deg,#02111cd4,#02182273);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.mobile-start-card{width:min(100%,440px);padding:12px 0;text-align:left}.mobile-kicker{color:#a9c5d0;font-size:11px;line-height:1.8;letter-spacing:.13em}.mobile-kicker span{margin-left:15px}.mobile-start-card h1{font-size:clamp(60px,17vw,88px);line-height:.94;font-weight:200;letter-spacing:-.055em;margin:25px 0 22px;color:#f5fbff}.mobile-intro{color:#d4e5e9;font-size:15px;line-height:1.7;font-weight:300}.mobile-start-buttons{margin-top:28px}.mobile-start-buttons button,.mobile-controls button{min-height:44px;border:1px solid rgba(174,212,228,.24);border-radius:4px;color:#edf7ff;background:#04182366;font:inherit;cursor:pointer}.mobile-start-buttons button:focus-visible,.mobile-controls button:focus-visible{outline:2px solid #83e8ff;outline-offset:4px}.mobile-start-buttons button:disabled{opacity:.45;cursor:wait}.mobile-start-buttons .mobile-begin{width:100%;min-height:52px;color:#082331;background:#dfedf0;border-color:#dfedf0;font-size:16px}.mobile-secondary-buttons{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}.mobile-secondary-buttons button{padding:10px 8px;font-size:12px}.mobile-loading{min-height:24px;margin-top:10px;color:#ffd898;font-size:12px;line-height:1.6}.mobile-privacy{color:#a4bcc6;font-size:11px;line-height:1.7;margin-top:12px}.mobile-orientation{color:#839fae;font-size:11px;line-height:1.6;margin-top:10px}.mobile-controls{position:fixed;z-index:40;top:max(12px,env(safe-area-inset-top));left:max(16px,env(safe-area-inset-left));display:flex;gap:8px}.mobile-controls button{padding:8px 13px;font-size:12px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.mobile-return{display:none}.mobile-experience.exhibition-running .mobile-return,.mobile-experience.mobile-starting .mobile-return{display:block}.mobile-experience .sound-toggle{z-index:40;top:max(12px,env(safe-area-inset-top));right:max(16px,env(safe-area-inset-right));min-height:44px;padding:8px 12px;font-size:12px}.mobile-experience:not(.exhibition-running) .sound-toggle{visibility:hidden}.mobile-guidance{position:fixed;z-index:15;left:max(24px,env(safe-area-inset-left));right:max(24px,env(safe-area-inset-right));bottom:max(28px,calc(env(safe-area-inset-bottom) + 16px));pointer-events:none;max-width:430px;text-shadow:0 2px 14px #03121c,0 1px 3px #03121c}body:not(.exhibition-running) .mobile-guidance{display:none}.mobile-guidance p{font-size:19px;font-weight:300;line-height:1.4;margin-bottom:6px}.mobile-guidance span{display:block;font-size:12px;line-height:1.6;color:#bfd4dc}.mobile-guidance.recognized p{color:#c4f4ff}.mobile-guidance[data-phase=harbor] p{color:#ffe6b8}.mobile-experience .webcam-panel{width:115px;min-width:0;right:max(16px,env(safe-area-inset-right));bottom:max(128px,calc(env(safe-area-inset-bottom) + 110px))}.mobile-experience .webcam-label{font-size:10px;padding:5px 8px}@media (orientation: landscape) and (max-height: 600px){.mobile-start-screen{padding-top:max(60px,env(safe-area-inset-top));padding-bottom:16px}.mobile-start-card{width:min(100%,620px);display:grid;grid-template-columns:1fr 1fr;column-gap:30px;align-items:start}.mobile-kicker{grid-column:1 / -1}.mobile-start-card h1{grid-column:1;grid-row:2 / 5;font-size:clamp(58px,11vh,72px);margin-top:16px}.mobile-intro{grid-column:2;grid-row:2;margin-top:14px;font-size:13px}.mobile-start-buttons{grid-column:2;grid-row:3;margin-top:12px}.mobile-start-buttons .mobile-begin{min-height:44px}.mobile-loading{grid-column:2;grid-row:4;min-height:0}.mobile-privacy{grid-column:1 / -1;margin-top:8px}.mobile-orientation{display:none}.mobile-guidance{max-width:min(440px,62vw);bottom:max(16px,env(safe-area-inset-bottom))}.mobile-guidance p{font-size:17px}.mobile-guidance span{font-size:11px}.mobile-experience .webcam-panel{bottom:max(16px,env(safe-area-inset-bottom))}}