/* Existing editorial identity, native CSS. Variance 6 / motion 3 / density 3.
   Preserve the wordmark, rust accent and light/dark tokens. Media radius 10px,
   controls 5px. The exact requested H1 and numbered step titles are retained. */
.floor-plan-guide .trace-header,.floor-plan-guide .trace-main,.floor-plan-guide .trace-footer{width:min(1280px,calc(100% - 64px))}
.floor-plan-guide .trace-header{height:76px}
.trace-header nav{display:flex;gap:24px;align-items:center;font-size:13px}
.guide-hero{padding:38px 0 42px}
.guide-kicker{font-size:11px;letter-spacing:.06em;margin:0 0 15px;color:var(--muted)}
.guide-hero h1{font-size:clamp(30px,3vw,46px);line-height:1.13;letter-spacing:-.045em;max-width:1120px;margin:0 0 17px;text-wrap:balance}
.guide-deck{font-size:16px;line-height:1.6;max-width:72ch;margin:0 0 25px}
.hero-comparison{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.floor-plan-guide figure{margin:0}
.hero-image{height:clamp(215px,24vw,330px);border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff}
.hero-image img{width:100%;height:100%;object-fit:contain}
.hero-comparison figcaption{display:flex;justify-content:space-between;gap:12px;font-size:12px;padding-top:11px;color:var(--muted)}
.hero-comparison figcaption strong{color:var(--ink);font-weight:500}
.hero-actions{display:flex;align-items:center;gap:26px;margin-top:23px;font-size:13px}
.hero-actions .button,.demo-launch .button{background:var(--accent);color:var(--guide-button-ink,#fff);border:1px solid var(--accent);border-radius:5px;padding:13px 19px;font-size:13px;min-height:44px}
:root[data-theme="dark"] .floor-plan-guide{--guide-button-ink:#191d19}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]) .floor-plan-guide{--guide-button-ink:#191d19}}
.hero-actions>a:last-child{color:var(--accent)}
.guide-demo{border-top:1px solid var(--line);padding:35px 0 38px;scroll-margin-top:20px}
.demo-intro h2{font-size:30px;letter-spacing:-.04em;line-height:1.2;margin:0 0 10px}
.demo-intro>p{font-size:14px;margin:0 0 23px;line-height:1.7}
.demo-launch{display:grid;grid-template-columns:1fr 1fr;gap:45px;border:1px solid var(--line);border-radius:10px;background:var(--surface);overflow:hidden;align-items:center}
.demo-launch>img{width:100%;height:270px;object-fit:contain;background:#e7e7e3}
.demo-launch>div{padding:24px 35px 24px 0;max-width:420px}
.demo-launch h3{font-size:25px;letter-spacing:-.03em;margin:0 0 12px}
.demo-launch p{font-size:14px;line-height:1.7;margin-bottom:20px}
.demo-launch #demo-load-status{font-size:12px;margin:12px 0 0}
.replay-status{display:flex;align-items:center;gap:15px;font-size:11px;color:var(--muted);margin:0 0 16px;flex-wrap:wrap}
.replay-inspection{border-bottom:1px solid var(--line);margin-top:10px}
.replay-inspection>summary{font-size:13px;min-height:44px}
.replay-inspection .step-detail{border:0;padding-top:15px;gap:30px}
.guide-caption{font-size:12px;line-height:1.7;margin:16px 0;color:var(--muted);max-width:90ch}
.guide-caption a,.guide-downloads a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.guide-downloads{font-size:13px;border-top:1px solid var(--line);padding-top:5px}
.guide-downloads>summary{min-height:44px}
.guide-downloads ul{padding-left:20px;max-width:90ch;color:var(--muted)}
.guide-downloads li{margin-bottom:7px}
.guide-downloads #provenance{font-size:12px;max-width:90ch;line-height:1.7}
.guide-layout{display:grid;grid-template-columns:190px minmax(0,840px);justify-content:space-between;gap:65px;border-top:1px solid var(--line);padding-top:44px}
.guide-toc{position:sticky;top:28px;align-self:start;font-size:12px;line-height:1.5}
.guide-toc strong{display:block;margin-bottom:17px;font-weight:500}
.guide-toc a{display:block;color:var(--muted);padding:9px 0}
.guide-toc a:hover{color:var(--accent)}
.guide-prose{min-width:0}
.guide-section{margin-bottom:58px;scroll-margin-top:24px}
.guide-section>h2{font-size:clamp(27px,2.6vw,35px);line-height:1.18;letter-spacing:-.035em;margin:0 0 22px}
.guide-prose p{font-size:16px;line-height:1.85;margin:0 0 20px;max-width:74ch}
.guide-prose a:not(.checkpoint-links a):not(.related-demos a){color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.guide-prompt{border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:18px 22px;margin:24px 0}
.prompt-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;font-size:11px;color:var(--muted)}
.prompt-heading button{color:var(--accent);border:1px solid var(--line);background:var(--surface);padding:9px 13px;min-height:40px;border-radius:5px;font-size:12px}
.trace-main .guide-prompt pre{background:none;border:0;padding:13px 0;margin:0;font:14px/1.8 Consolas,monospace;max-height:none}
.guide-prompt>a{font-size:11px}
.guide-prompt [data-prompt-status]{font-size:12px;margin:0;line-height:1.6}
.guide-prompt [data-prompt-status]:empty{display:none}
.guide-reference{margin:25px 0!important}
.guide-reference img{max-height:440px;object-fit:contain;width:100%;border-radius:10px;background:#fff}
.guide-prose figcaption{font-size:12px;line-height:1.7;color:var(--muted);margin-top:12px}
.guide-steps{list-style:none;padding:0;margin:28px 0}
.guide-step{border-top:1px solid var(--line);padding:24px 0 10px;scroll-margin-top:24px}
.guide-step h3{font-size:20px;font-weight:500;line-height:1.4;letter-spacing:-.015em;margin:0 0 12px}
.guide-step p{font-size:14px;line-height:1.8;margin-bottom:10px}
.checkpoint-links{display:flex;gap:24px;flex-wrap:wrap;margin-bottom:15px}
.checkpoint-links a{font-size:12px;color:var(--accent);display:inline-flex;align-items:center;gap:8px;min-height:36px;text-decoration:underline;text-underline-offset:3px}
.time-summary{overflow:auto;margin:25px 0 34px;border:1px solid var(--line);border-radius:8px}
.time-summary table{width:100%;border-collapse:collapse;font-size:13px;line-height:1.6;text-align:left}
.time-summary th,.time-summary td{padding:14px 17px;border-bottom:1px solid var(--line);vertical-align:top}
.time-summary thead{background:var(--soft)}
.time-summary th{font-weight:500;color:var(--ink)}
.time-summary td{color:var(--muted)}
.time-summary tr:last-child>*{border-bottom:0}
.time-summary td:nth-child(2){white-space:nowrap}
.result-entry{margin:35px 0 42px}
.result-entry h3,.guide-observation h3,.guide-answer h3{font-size:23px;line-height:1.4;letter-spacing:-.025em;margin:0 0 13px}
.result-entry img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:10px}
.guide-observation{padding:25px;background:var(--soft);border-left:3px solid var(--accent);margin:28px 0}
.guide-observation ul{padding-left:18px;margin:14px 0 0;color:var(--muted);font-size:14px;line-height:1.8}
.guide-observation li+li{margin-top:12px}
.guide-prose .measurement-note{font-size:13px;color:var(--muted)}
.guide-answer{padding:24px 0;border-top:1px solid var(--line)}
.guide-answer p{margin-bottom:0}
.related-demos a{display:flex;align-items:center;justify-content:space-between;gap:30px;border-top:1px solid var(--line);padding:21px 0;color:var(--ink);font-size:17px;line-height:1.5}
.related-demos a:hover{color:var(--accent)}
.guide-sources ul{padding-left:18px;line-height:1.8;font-size:13px}
.guide-sources li{margin-bottom:10px}
.guide-prose .guide-sources p{font-size:12px;color:var(--muted)}
.floor-plan-guide a:focus-visible,.floor-plan-guide button:focus-visible,.floor-plan-guide summary:focus-visible,.time-summary:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
.floor-plan-guide button:disabled{cursor:wait;opacity:.7}
.floor-plan-guide [hidden]{display:none!important}
@media(max-width:1000px){.guide-layout{grid-template-columns:150px minmax(0,1fr);gap:35px}.hero-comparison figcaption{flex-direction:column;gap:4px}.guide-hero h1{font-size:36px}.demo-launch{gap:25px}.demo-launch>div{padding-right:25px}}
@media(max-width:740px){.floor-plan-guide .trace-header,.floor-plan-guide .trace-main,.floor-plan-guide .trace-footer{width:calc(100% - 36px)}.floor-plan-guide .trace-header{height:66px}.trace-header nav{font-size:11px;gap:12px}.guide-hero{padding:27px 0 30px}.guide-hero h1{font-size:29px;line-height:1.15;text-wrap:initial}.guide-kicker{font-size:10px}.guide-deck{font-size:14px;line-height:1.7}.hero-comparison{gap:10px}.hero-image{height:160px;border-radius:7px}.hero-comparison figcaption{font-size:10px}.hero-actions{gap:20px;font-size:12px;flex-wrap:wrap}.hero-actions .button{font-size:12px;padding:11px 14px}.guide-demo{padding:27px 0}.demo-intro h2{font-size:28px}.demo-launch{grid-template-columns:1fr;gap:0}.demo-launch>img{height:200px}.demo-launch>div{padding:23px;max-width:none}.demo-launch h3{font-size:24px}.demo-launch p{font-size:13px}.guide-layout{display:block;padding-top:28px}.guide-toc{position:static;display:flex;flex-wrap:wrap;gap:0 19px;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:32px;font-size:11px}.guide-toc strong{width:100%;margin-bottom:6px}.guide-toc a{padding:7px 0}.guide-section{margin-bottom:40px}.guide-prose p{font-size:14px}.guide-section>h2{font-size:27px}.guide-prompt{padding:15px}.prompt-heading{font-size:10px}.prompt-heading button{flex-shrink:0}.trace-main .guide-prompt pre{font-size:13px}.guide-step h3{font-size:19px}.guide-step p{font-size:13px}.time-summary th,.time-summary td{padding:11px 10px;font-size:12px}.result-entry h3,.guide-observation h3,.guide-answer h3{font-size:21px}.guide-observation{padding:19px}.related-demos a{font-size:16px}.guide-downloads .download-links{gap:15px}.floor-plan-guide .trace-footer{flex-wrap:wrap;line-height:1.7}}
@media(prefers-reduced-motion:reduce){.floor-plan-guide{scroll-behavior:auto}}