:root{--ink:#253d36;--paper:#fff9e9;--accent:#bf6942;--line:#ced2b7;font-family:"PingFang TC","Noto Sans TC",system-ui,sans-serif;color:var(--ink);font-synthesis:none}
/* Exhibition polish: stable title, separate controls, readable compact mission. */
header .brand{flex-shrink:0}header nav button{min-height:44px}
@media(max-width:650px){
 header{display:grid!important;grid-template-columns:minmax(0,1fr);gap:8px;align-items:start}
 header .brand h1{white-space:nowrap;font-size:20px!important;letter-spacing:1px!important;margin:0}
 header .brand small{font-size:10px;letter-spacing:1px}
 header nav{width:100%;max-width:none!important;flex-wrap:nowrap!important;justify-content:flex-end;gap:6px}
 header nav button{font-size:12px;min-height:44px;padding:8px 12px}
 .mission{top:128px!important;width:calc(100% - 32px)!important;padding:10px 14px!important;border-radius:4px 16px 16px 16px}
 .mission .eyebrow{display:none}.mission h2{font-size:16px!important;line-height:1.4!important}
 .mission p{font-size:12px!important;line-height:1.5!important;margin:4px 0!important}
 #counter{font-size:12px!important;letter-spacing:0}
 .location{max-width:calc(100% - 160px);font-size:12px!important}
 footer #controls{display:none}
 #toast{top:auto!important;bottom:200px;max-width:calc(100% - 32px);border-radius:12px;font-size:14px!important}
 #exhibit-nav{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));width:calc(100% - 32px)}
 #exhibit-nav button{min-height:44px;padding:10px 4px!important;font-size:12px!important}
 .card p{font-size:15px!important}.card small{font-size:12px!important}
}
@media(max-height:500px) and (min-width:651px){
 header{top:12px}.mission{top:82px;width:230px;padding:10px 14px}.mission .eyebrow,.mission p{display:none}
 .mission h2{font-size:16px;margin:4px 0}#toast{top:auto;bottom:100px}
 .card{max-height:92dvh;padding:24px}.card h2{font-size:26px;margin:10px 0}
}
*{box-sizing:border-box}body{margin:0;overflow:hidden;background:#adc8c3}button{font:inherit;color:inherit;cursor:pointer;touch-action:manipulation}button:focus-visible{outline:3px solid #e5a943;outline-offset:4px}button:disabled{opacity:.5;cursor:default}#world{position:fixed;inset:0;width:100%;height:100%;touch-action:none;display:block}header{position:absolute;top:max(24px,env(safe-area-inset-top));left:32px;right:32px;display:flex;justify-content:space-between;align-items:center;pointer-events:none;gap:12px}.brand{display:flex;gap:12px;align-items:center}.seal{border:1px solid currentColor;border-radius:24px 24px 3px 3px;width:39px;height:49px;display:grid;place-content:center;font:29px Georgia,serif;background:#fff9e9c9;position:relative}.seal span{position:absolute;font-size:14px;right:2px;top:2px}.brand small{font:10px Georgia,serif;letter-spacing:3px}.brand h1{font-family:serif;font-size:23px;margin:5px 0;font-weight:600;letter-spacing:3px;text-shadow:0 1px 8px #fff8}nav{display:flex;gap:8px;pointer-events:auto}nav button{border:1px solid #f9f4dc9c;background:#fff9e9dc;border-radius:24px;padding:10px 13px;font-size:12px;box-shadow:0 3px 10px #23352c0a}.mission{position:absolute;top:115px;left:32px;width:250px;background:linear-gradient(120deg,#fff9ecef,#fff9eccc);border:1px solid #ffffffe0;border-radius:3px 22px 22px 22px;padding:20px 22px;box-shadow:0 9px 35px #23352c12;pointer-events:none}.eyebrow{font-size:10px;letter-spacing:3px;text-transform:uppercase;line-height:1.6;color:#88795e}h2{font-family:serif}.mission h2{font-size:19px;margin:8px 0 10px;line-height:1.5}.mission p{font-size:12px;line-height:1.8;margin:0 0 14px;color:#586659}.progress{height:3px;background:#dce0cd;margin:10px 0}.progress i{display:block;height:100%;background:#b67743;transition:width .5s}#counter{font-size:11px;letter-spacing:1px}.location{position:absolute;bottom:65px;right:32px;background:#fff9e9dc;border-radius:40px;padding:11px 18px;font-size:12px;display:flex;gap:12px}footer{position:absolute;bottom:max(23px,env(safe-area-inset-bottom));left:32px;right:32px;display:flex;justify-content:space-between;font-size:11px;letter-spacing:1px;pointer-events:none;text-shadow:0 1px 5px #fff}.signature{font-family:Georgia;font-size:10px;letter-spacing:2px}#toast{position:absolute;top:105px;left:50%;transform:translate(-50%,-10px);max-width:380px;width:max-content;background:var(--paper);border-radius:40px;padding:12px 22px;font-size:13px;box-shadow:0 8px 25px #16342120;opacity:0;transition:.3s;pointer-events:none;text-align:center}#toast.show{opacity:1;transform:translate(-50%,0)}#context{position:absolute;bottom:95px;left:50%;transform:translateX(-50%);max-width:90%;display:none}#interact{background:#294f42;color:#fff9e9;border:1px solid #fff9e9;border-radius:28px;padding:15px 26px;box-shadow:0 5px 20px #14322130;font-size:14px}.veil{position:fixed;inset:0;display:grid;place-items:center;background:#182b252e;backdrop-filter:blur(3px);padding:22px;z-index:5}.veil[hidden]{display:none}.card{width:min(480px,100%);max-height:90dvh;overflow:auto;background:var(--paper);border:1px solid white;padding:44px;border-radius:4px 65px 4px 4px;box-shadow:0 20px 70px #14291b25;position:relative}.card:before{content:"✧";position:absolute;right:26px;top:22px;color:#bd8655;font-size:30px}.card h2{font-size:35px;letter-spacing:4px;line-height:1.4;margin:20px 0}.card p{font-size:14px;line-height:2;color:#59685c;white-space:pre-line}.card small{display:block;font-size:10px;color:#8e947d;line-height:1.8;margin-top:20px}.primary,.secondary{width:100%;border:0;padding:15px;border-radius:4px;font-size:14px;margin-top:12px}.primary{background:#294f42;color:var(--paper)}.secondary{background:#e9ead9}.route-list{display:grid;grid-template-columns:1fr 1fr;gap:7px;padding:10px 0}.route-list button{border:1px solid #d8d5bc;background:#f4efdc;border-radius:6px;font-size:12px;padding:10px}#loading{position:fixed;inset:0;background:#f7f4e9;display:grid;place-content:center;text-align:center;gap:20px;z-index:10;font-family:serif;letter-spacing:4px}#loading span{display:block;font:10px Georgia;letter-spacing:5px}#error{position:fixed;inset:25%;padding:40px;z-index:11;background:#fff6e4;line-height:2}#error[hidden]{display:none}#error button{display:block}#joystick{display:none;position:absolute;bottom:max(70px,env(safe-area-inset-bottom));left:28px;width:108px;height:108px;border:1px solid #fff9;border-radius:50%;background:#fff7d82f;touch-action:none}#joystick i{position:absolute;top:33px;left:33px;width:40px;height:40px;border:1px solid #fff;border-radius:50%;background:#fdf5dba0;pointer-events:none}body[data-theme=forest]{--ink:#f6f2d5}body[data-theme=forest] .mission,body[data-theme=forest] .card,body[data-theme=forest] nav,body[data-theme=forest] .location,body[data-theme=forest] #toast{color:#253d36}body[data-theme=forest] .seal{color:#294436}body[data-theme=forest] footer{text-shadow:0 1px 6px #112f21}
@media(pointer:coarse){body:not([data-theme=garden]) #joystick{display:block}}@media(max-width:650px){header{top:max(16px,env(safe-area-inset-top));left:16px;right:16px}.brand{gap:8px}.seal{width:29px;height:38px;font-size:24px}.brand h1{font-size:16px;letter-spacing:1px}.brand small{font-size:8px;letter-spacing:1.5px}nav{gap:5px}nav button{font-size:10px;padding:9px}#quality{display:none}.mission{top:85px;left:16px;width:210px;padding:12px 15px;border-radius:3px 16px 16px 16px}.mission h2{font-size:15px;margin:4px 0}.mission p{font-size:11px;line-height:1.6;margin:4px 0}.eyebrow{font-size:9px;letter-spacing:2px}#counter{font-size:10px}.progress{margin:6px 0}.location{right:16px;bottom:50px;padding:8px 12px;font-size:10px}footer{left:16px;right:16px;bottom:max(16px,env(safe-area-inset-bottom));font-size:10px}.signature{display:none}.card{padding:30px 26px}.card h2{font-size:28px;letter-spacing:2px}.card p{font-size:13px}#toast{top:245px;max-width:85%;font-size:12px;padding:10px 15px}#context{bottom:82px;left:auto;right:16px;transform:none;max-width:55%}#interact{padding:14px 17px;font-size:12px}body[data-theme=garden] #context{left:50%;right:auto;transform:translateX(-50%)}}
#qa-reduce{color:#294537}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}
#exhibit-nav{position:absolute;bottom:77px;left:50%;transform:translateX(-50%);gap:8px;max-width:94%;width:max-content}#exhibit-nav button{border-radius:6px;padding:12px 15px;background:#fff7e6ee;border:1px solid #fcf7df}#exhibit-nav button[aria-pressed=true]{background:#496c57;color:#fff4d4}#qa-tour{color:#294537}
@media(max-width:650px){#exhibit-nav{bottom:95px;gap:5px}#exhibit-nav button{font-size:10px;padding:12px 9px}body[data-theme=garden] .location{bottom:57px}}
body[data-theme=forest]{color:#f6f2d5}body[data-theme=forest] .brand{text-shadow:0 2px 10px #193e32}body[data-theme=forest] footer{color:#fff7d7}body[data-theme=forest] #interact{color:#fff7d7}
@media(max-width:650px){body:not([data-theme=garden]) #joystick{display:block}body:not([data-theme=garden]) footer #controls{max-width:90%;font-size:9px}}

/* 0.4 Keepsakes use existing journey state; no duplicate reward ledger. */
.keepsakes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;text-align:left;margin:16px 0}.keepsake{padding:18px;border:1px solid #b7a37a66;border-radius:14px;background:#fffaf0}.keepsake.locked{background:#eeebe1;color:#817b6b}.keepsake-icon{display:block;font-size:27px;margin-bottom:8px}.keepsake small{display:block;font-size:13px}.keepsake h3{font-size:18px;margin:7px 0}.keepsake p{font-size:14px;line-height:1.8!important;margin:0}.collection-count{font-size:14px!important;line-height:1.8!important}.card:has(.keepsakes){width:min(740px,92vw);max-height:86dvh;overflow-y:auto}.collection-open{font-size:14px}.gallery-return{color:inherit;padding:8px;font-size:14px;text-decoration:none}@media(max-width:500px){.keepsakes{grid-template-columns:1fr}.collection-open{padding:10px 12px!important}header nav{flex-wrap:wrap;max-width:230px;justify-content:flex-end}.card:has(.keepsakes){max-height:80dvh}}