:root{--bg:#f7f5ef;--ink:#202922;--muted:#586052;--line:#d8d8cd;--accent:#a44328}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.8 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:5px}a:focus-visible{outline:3px solid var(--accent);outline-offset:5px}h1,h2,h3,p{margin:0}.shell{max-width:1320px;margin:auto;padding:0 48px}.skip{position:absolute;top:-90px;padding:10px;background:var(--ink);color:white;z-index:10}.skip:focus{top:10px}.top{display:flex;justify-content:space-between;align-items:center;gap:24px;border-bottom:1px solid var(--line);padding:26px 0}.brand{font-size:22px;font-weight:650;letter-spacing:-1px}.back{font-size:13px;color:var(--accent)}.lead{padding:55px 0 32px;display:grid;grid-template-columns:1.2fr 1fr;align-items:end;gap:50px}.label{font:11px/1.6 Consolas,monospace;letter-spacing:2px;color:var(--accent);margin-bottom:20px}h1{font:48px/1.35 "Songti SC","SimSun",serif;font-weight:500}.lead p{font-size:14px;color:var(--muted)}.cover{margin:0}.cover img{width:100%;height:auto;aspect-ratio:3/2;object-fit:cover;display:block}.cover figcaption{font-size:11px;color:var(--muted);padding:12px 0}.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:23px 0}.facts small{font-size:11px;color:var(--muted);display:block}.facts strong{font-size:15px;font-weight:500}.section{padding:55px 0;border-bottom:1px solid var(--line)}.split{display:grid;grid-template-columns:1fr 1.25fr;gap:65px}h2{font:31px/1.4 "Songti SC","SimSun",serif;font-weight:500;margin-bottom:16px}.copy{color:var(--muted);font-size:14px}.principles{list-style:none;margin:0;padding:0;counter-reset:step}.principles li{position:relative;padding:0 0 20px 34px;counter-increment:step}.principles li:before{content:'0' counter(step);position:absolute;left:0;color:var(--accent);font:12px/2 Consolas,monospace}.principles h3{font-size:16px;font-weight:550;margin-bottom:5px}.principles p{font-size:13px;color:var(--muted)}.material-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:28px}.material-grid article{border-top:1px solid var(--line);padding-top:15px}.swatch{height:84px;border:1px solid #00000012;margin-bottom:15px}.material-grid h3{font-size:14px;font-weight:550}.material-grid p{font-size:12px;color:var(--muted);margin-top:6px}.route{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin:24px 0}.route div{padding:16px;background:#e9ebdf;min-width:0}.route b{font:12px Consolas,monospace;color:var(--accent)}.route strong{display:block;font-size:14px;font-weight:550;margin:9px 0 4px}.route small{font-size:12px;color:var(--muted)}.checkpoint{list-style:none;padding:0;margin:0}.checkpoint li{border-top:1px solid var(--line);padding:13px 0;font-size:13px;color:var(--muted)}.checkpoint strong{color:var(--ink);font-weight:550}.note{font-size:12px;color:var(--muted);margin-top:25px;border-left:2px solid var(--accent);padding:10px 15px;background:#eeebe1}.related{padding:36px 0;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.related a{padding:10px 0;color:var(--accent);font-size:13px}footer{border-top:1px solid var(--line);padding:22px 0 35px;font-size:11px;color:var(--muted)}@media(max-width:800px){.shell{padding:0 24px}.lead{grid-template-columns:1fr;gap:19px;padding:36px 0 24px}h1{font-size:38px}.split{grid-template-columns:1fr;gap:27px}.section{padding:38px 0}.material-grid{grid-template-columns:1fr 1fr}.route{grid-template-columns:1fr 1fr}.cover img{aspect-ratio:3/2}.facts{gap:12px;padding:17px 0}.facts strong{font-size:12px}.facts small{font-size:10px}.top{gap:15px}.brand{font-size:20px}.back{font-size:12px}h2{font-size:27px}}@media(max-width:360px){.shell{padding:0 16px}h1{font-size:33px}.facts strong{font-size:11px}.back{font-size:11px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
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.case-download-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:16px}.case-download-actions .drawing-jump{border:0}.atlas-download{display:inline-flex;align-items:center;justify-content:center;background:var(--ink);color:var(--bg);padding:11px 19px;font-size:13px;line-height:1.7;min-height:44px}.atlas-download:hover{background:#37483c;text-decoration:none}.atlas-panel{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:22px 24px;margin:26px 0;background:#e9ebdf;border:1px solid var(--line)}.atlas-panel strong{font-size:14px;font-weight:550}.atlas-panel p{font-size:12px;color:var(--muted);margin-top:5px}.atlas-panel .atlas-download{flex-shrink:0}@media(max-width:800px){.case-download-actions{gap:8px 16px}.case-download-actions .drawing-jump{font-size:12px;padding:8px 0}.atlas-panel{align-items:flex-start;flex-direction:column;gap:15px;padding:18px}.atlas-panel strong{font-size:13px}.atlas-download{padding:10px 16px}}

.brand{display:inline-flex;align-items:center;gap:9px}.brand img{display:block;flex:none}

.brand .ic-descriptor{color:var(--muted);font-size:12px;font-weight:550;letter-spacing:0;white-space:nowrap}
@media(max-width:360px){.brand:has(.ic-descriptor){gap:5px}.brand .ic-descriptor{font-size:10px}}

.hotel-study{margin:36px 0 46px;padding:28px;border:1px solid var(--line);background:#f5f2e9;scroll-margin-top:22px}.hotel-study h3{font:500 clamp(24px,3vw,36px)/1.35 "Songti SC","SimSun",serif;margin:8px 0 12px}.hotel-study p{font-size:14px;color:var(--muted)}.hotel-study .study-kicker{color:var(--accent);font-size:12px}.hotel-study fieldset{min-width:0;margin:22px 0;padding:0;border:0}.hotel-study legend{font-weight:650;padding:0 0 10px}.study-plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.study-card,.study-choice{border:1px solid var(--line);background:#faf8f2;padding:12px}.study-card:has(input:checked),.study-choice:has(input:checked){border-color:#536755;box-shadow:inset 0 0 0 1px #536755}.study-card svg,.study-choice svg{display:block;width:100%;height:auto}.study-card svg{max-height:260px}.study-card h4{margin:10px 0 5px}.study-card p{font-size:13px;margin:6px 0}.study-card label{display:flex;align-items:center;gap:6px;min-height:38px;margin-top:6px;cursor:pointer}.study-button{font:inherit;font-size:14px;border:0;background:var(--ink);color:white;padding:11px 16px;cursor:pointer}.study-button:focus-visible,.hotel-study input:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.study-status{margin:10px 0}.study-wall-grid,.study-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.study-choice{display:block;cursor:pointer}.study-choice span,.study-choice small{display:block;margin-top:7px}.study-choice small{font-size:12px;color:var(--muted)}.study-choice:has(input:disabled){opacity:.65;cursor:default}.study-summary{padding:14px;background:#e9ebdf;font-size:13px}.hotel-study [hidden]{display:none}@media(max-width:760px){.hotel-study{padding:14px}.study-plan-grid,.study-wall-grid{grid-template-columns:1fr}.study-card svg{max-height:210px}.study-choices{gap:8px}.study-choice{padding:8px}}

.room-preview{margin-top:26px;padding-top:20px;border-top:1px solid var(--line)}.room-preview h4{margin:0 0 8px}.room-controls{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:14px 0}.room-controls select,.room-controls button:not(.study-button){font:inherit;font-size:13px;border:1px solid var(--line);color:var(--ink);background:#faf8f2;padding:8px 12px}.room-controls label{font-size:13px}.room-pair{display:grid;grid-template-columns:minmax(0,1fr);gap:14px}.room-pair:has(#room-saved:not([hidden])){grid-template-columns:repeat(2,minmax(0,1fr))}.room-pair article{min-width:0;background:#faf8f2;border:1px solid var(--line);padding:12px}.room-pair h5{margin:0 0 8px;font-size:15px}.room-pair svg{width:100%;max-height:460px;display:block}.room-pair dl{display:grid;grid-template-columns:auto 1fr;gap:3px 10px;font-size:12px;margin:8px 0 0}.room-pair dd{margin:0;color:var(--muted)}#room-feedback{margin-top:8px}@media(max-width:700px){.room-pair:has(#room-saved:not([hidden])){grid-template-columns:1fr}}
