:root{font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC",sans-serif;color:#242923;background:#e9e7de;font-synthesis:none;--paper:#f9f6eb;--green:#315e4c;--red:#ac4c35;--muted:#697368;--line:#c9cdbf}*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button{cursor:pointer}button:disabled{opacity:.48;cursor:not-allowed}a{color:var(--green);text-underline-offset:4px}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid #aa694b;outline-offset:4px}[hidden]{display:none!important}.shell{max-width:1184px;margin:auto;padding:0 32px}.site-header{min-height:100px;display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-size:17px;font-weight:700;color:var(--green)}.brand-icon{width:35px;height:35px;border:1px solid var(--green);display:grid;place-items:center;font-family:Georgia,serif;font-size:24px;font-weight:400}.brand small{display:block;font-size:10px;line-height:1.6;font-weight:450;color:#6a7166;letter-spacing:.04em;margin-top:3px}.site-header nav{display:flex;align-items:center;justify-content:flex-end;gap:23px;font-size:12px}.site-header nav a{text-decoration:none}.text-button{padding:10px 0;background:none;border:0;color:var(--green);font-size:12px;font-weight:600;line-height:1.6;min-height:40px}.text-button:hover{text-decoration:underline}.intro{padding:61px 0 44px;max-width:820px}.eyebrow{font-size:10px;font-weight:600;letter-spacing:.16em;line-height:1.8;color:var(--red);margin:0 0 18px}.intro h1{font-family:ui-serif,"Songti SC",STSong,Georgia,serif;font-size:clamp(34px,4.4vw,53px);font-weight:400;line-height:1.16;letter-spacing:-.04em;margin:0 0 22px;max-width:800px}.lead{font-size:15px;line-height:1.9;color:#626c60;max-width:665px;margin:0}.workbench{display:grid;grid-template-columns:282px minmax(0,1fr);gap:48px;align-items:start}.input-panel{padding-top:19px;border-top:2px solid var(--green);min-width:0}.section-number{font-family:ui-monospace,Consolas,monospace;color:var(--green);font-size:11px;letter-spacing:.06em;margin:0 0 21px}.input-panel h2{font-family:ui-serif,"Songti SC",STSong,Georgia,serif;font-weight:400;font-size:25px;line-height:1.35;letter-spacing:-.02em;margin:0 0 27px}.input-panel label{display:block;font-size:11px;color:#626c60;margin-bottom:9px}.input-panel input{border:1px solid #a5b0a0;background:#f6f4e9;border-radius:3px;width:100%;padding:13px 12px;font-size:14px;line-height:1.5;color:#263f30}.input-panel input::placeholder{color:#7e897b}.input-count{text-align:right;font-family:ui-monospace,monospace;font-size:10px;color:var(--muted);margin:8px 0 12px}.primary-button{border:1px solid var(--green);border-radius:3px;background:var(--green);color:var(--paper);padding:13px 16px;min-height:46px;line-height:1.55;font-size:12px;font-weight:600;letter-spacing:.015em}.primary-button:hover:not(:disabled){background:#244735}.input-panel .primary-button{width:100%;margin-top:9px}.input-panel .text-button{display:block;margin:4px auto}.help{font-size:11px;line-height:1.9;color:var(--muted);margin:12px 0}.transport-note{font-size:11px;line-height:1.95;color:#485845;border-left:2px solid #acbba7;padding-left:12px;margin:25px 0 16px}.status,.error{font-size:12px;line-height:1.9;padding:12px 14px;margin:16px 0;overflow-wrap:anywhere}.status{background:#dce6d7;border:1px solid #bacab1;color:#34503b}.error{background:#f3e2d5;border:1px solid #dcb89e;color:#82462d}.result-panel{min-width:0}.result-state{font-size:10px;letter-spacing:.025em;color:#64705e;margin:0 0 12px;line-height:1.8;min-height:18px}.exhibit-card{background:var(--paper);border:1px solid #c5caba;box-shadow:0 20px 50px #36412c0b;padding:36px 40px 28px;position:relative;overflow-wrap:anywhere}.exhibit-card::before{content:"";position:absolute;inset:10px;border:1px solid #e1e2d4;pointer-events:none}.exhibit-header{display:flex;justify-content:space-between;gap:20px;align-items:start;border-bottom:1px solid #d2d7c8;padding-bottom:20px}.exhibit-museum{font-size:10px;letter-spacing:.08em;line-height:1.8;color:var(--green);margin:0;max-width:240px;font-weight:600}.exhibit-year{margin:0;font-family:ui-monospace,Consolas,monospace;font-size:25px;color:var(--green);line-height:1.1}.exhibit-year span{display:block;color:var(--red);font-family:ui-sans-serif,sans-serif;font-size:8px;letter-spacing:.07em;line-height:1.8;margin-top:8px}.example-badge{font-size:9px;color:var(--red);line-height:1.9;margin:17px 0 0}.exhibit-title{font-family:ui-serif,"Songti SC",STSong,Georgia,serif;font-size:clamp(28px,3.1vw,40px);font-weight:400;letter-spacing:-.025em;line-height:1.3;margin:24px 0 5px}.diagram{margin:12px 0 27px}.diagram canvas{display:block;width:100%;height:auto;max-height:285px;object-fit:contain}.diagram figcaption{font-size:8px;color:#7c8577;line-height:1.8;text-align:center;letter-spacing:.025em}.exhibit-card h3{font-size:9px;color:var(--green);letter-spacing:.09em;line-height:1.8;margin:22px 0 9px;font-weight:650}.interpretation{font-size:15px;line-height:1.95;margin:0;color:#3a4838;white-space:pre-wrap}.evidence-list{padding:0;list-style:none;margin:0;counter-reset:evidence}.evidence-list li{counter-increment:evidence;display:flex;gap:13px;font-size:12px;line-height:1.9;color:#52604d;margin:8px 0;white-space:pre-wrap}.evidence-list li::before{content:"0" counter(evidence);font-family:ui-monospace,monospace;color:var(--red);font-size:10px;flex-shrink:0}.exhibit-facts{border-top:1px solid #d2d7c8;margin:25px 0 0;padding-top:19px;font-size:10px;line-height:1.8}.exhibit-facts div{display:grid;grid-template-columns:115px minmax(0,1fr);gap:12px;margin:5px 0}.exhibit-facts dt{color:#6c7765}.exhibit-facts dd{margin:0;color:#40503b;min-width:0;unicode-bidi:plaintext}.exhibit-facts div:nth-child(n+2) dd{font-family:ui-monospace,Consolas,monospace;font-size:9px}.exhibit-footer{margin-top:22px;display:flex;justify-content:space-between;align-items:start;gap:18px;font-size:8px;line-height:1.9;color:#818877}.exhibit-footer p{margin:0;color:var(--red)}.exhibit-footer span{text-align:right}.download-row{display:flex;align-items:center;gap:18px;margin-top:20px}.download-row .help{flex:1;margin:0;font-size:10px}.download-row .primary-button{flex-shrink:0}.site-footer{border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:start;gap:30px;font-size:10px;line-height:1.9;color:#7b8373;padding:25px 0;margin-top:58px}.site-footer p{margin:0;max-width:700px}.site-footer>span{white-space:nowrap}.skip-link{position:absolute;left:16px;top:-80px;padding:12px;background:var(--green);color:#fff;z-index:10}.skip-link:focus{top:12px}.privacy-copy{max-width:720px;margin:65px auto 80px;font-size:16px;line-height:1.95}.privacy-copy h1{font-family:ui-serif,"Songti SC",STSong,Georgia,serif;font-size:38px;line-height:1.35;font-weight:400}.privacy-copy h2{font-size:18px;color:var(--green);margin-top:35px}.privacy-copy p{color:#52604d}.exhibit-card.is-new{animation:arrival .22s ease-out}.input-panel[aria-busy=true]::after{content:"";display:block;width:100%;height:1px;background:var(--green);transform-origin:left;animation:scan 1s ease-out 1}@keyframes arrival{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes scan{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@media(max-width:950px){.workbench{grid-template-columns:245px minmax(0,1fr);gap:25px}.exhibit-card{padding:29px}.exhibit-facts div{grid-template-columns:95px minmax(0,1fr)}.download-row{align-items:stretch;flex-direction:column;gap:10px}.diagram canvas{max-height:250px}.exhibit-footer{flex-direction:column;gap:5px}.exhibit-footer span{text-align:left}}
@media(max-width:700px){.shell{padding:0 20px}.site-header{min-height:86px}.intro{padding:38px 0 31px}.intro h1{font-size:38px}.workbench{grid-template-columns:1fr;gap:28px}.input-panel{padding-top:16px}.section-number{margin-bottom:12px}.input-panel h2{font-size:25px;margin-bottom:20px}.transport-note{margin-top:18px}.result-panel{width:100%}.exhibit-card{padding:32px}.diagram canvas{max-height:300px}.exhibit-title{font-size:34px}.exhibit-facts div{grid-template-columns:115px minmax(0,1fr)}.download-row{gap:12px}.exhibit-footer{flex-direction:row}.site-footer{margin-top:39px;flex-wrap:wrap;gap:10px}.privacy-copy{margin:38px auto 55px}}
@media(max-width:420px){.shell{padding:0 16px}.site-header{gap:10px;min-height:83px}.brand{font-size:15px;gap:8px}.brand-icon{width:29px;height:32px;font-size:22px}.brand small{font-size:8px;max-width:145px}.site-header nav{gap:13px;font-size:11px}.text-button{font-size:11px;min-height:44px}.intro h1{font-size:34px;line-height:1.2}.eyebrow{font-size:9px;letter-spacing:.08em}.lead{font-size:14px;line-height:1.9}.input-panel input{font-size:16px}.help,.transport-note{font-size:12px}.primary-button{font-size:13px;min-height:48px}.exhibit-card{padding:26px 22px}.exhibit-card::before{inset:7px}.exhibit-museum{font-size:9px;max-width:174px}.exhibit-year{font-size:24px}.exhibit-year span{font-size:7px;letter-spacing:0}.exhibit-header{gap:14px}.example-badge{font-size:9px}.exhibit-title{font-size:29px;line-height:1.4}.diagram canvas{max-height:210px}.diagram figcaption{font-size:9px}.exhibit-card h3{font-size:10px;margin-top:22px}.interpretation{font-size:15px;line-height:1.95}.evidence-list li{font-size:13px}.exhibit-facts{font-size:11px}.exhibit-facts div{grid-template-columns:80px minmax(0,1fr);gap:10px}.exhibit-facts div:nth-child(n+2) dd{font-size:10px}.exhibit-footer{flex-direction:column;gap:5px;font-size:9px}.exhibit-footer span{text-align:left}.download-row .help{font-size:11px}.privacy-copy{font-size:15px}.privacy-copy h1{font-size:31px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
