:root{--ink: #16181d;--ink-muted: #666c76;--line: #dfe1e6;--surface: #ffffff;--canvas: #f6f7f9;--accent: #0b5cd5;--accent-soft: #e8f0fd;--danger: #b4231f;--warning-bg: #fdf6e3;--warning-ink: #7a5c12;--radius: 8px;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}@media(prefers-color-scheme:dark){:root{--ink: #e9eaee;--ink-muted: #9aa1ac;--line: #2f333b;--surface: #1a1d23;--canvas: #121419;--accent: #5b9bff;--accent-soft: #1c2a44;--danger: #ff6b66;--warning-bg: #2e2716;--warning-ink: #e8c86a}}*{box-sizing:border-box}body{margin:0;font-family:var(--font);color:var(--ink);background:var(--canvas);font-size:15px;line-height:1.5}button{font:inherit;cursor:pointer;border-radius:6px;border:1px solid var(--line);background:var(--surface);color:var(--ink);padding:7px 13px}button:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}button:disabled{opacity:.5;cursor:not-allowed}button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button.primary:hover:not(:disabled){color:#fff;filter:brightness(1.08)}button.danger:hover:not(:disabled){border-color:var(--danger);color:var(--danger)}input,select{font:inherit;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:7px 9px;width:100%}input:focus,select:focus,button:focus-visible{outline:2px solid var(--accent);outline-offset:1px}label{display:block;font-size:12px;font-weight:600;color:var(--ink-muted);margin-bottom:4px;text-transform:uppercase;letter-spacing:.04em}.field{margin-bottom:12px}.app{display:flex;flex-direction:column;min-height:100vh}.topbar{display:flex;align-items:center;gap:16px;padding:12px 20px;background:var(--surface);border-bottom:1px solid var(--line)}.topbar h1{font-size:16px;margin:0;letter-spacing:-.01em}.topbar .spacer{flex:1}.centred{display:grid;place-items:center;flex:1;padding:24px}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px}.card.narrow{width:min(400px,100%)}.card h2{margin:0 0 4px;font-size:18px}.card .sub{color:var(--ink-muted);font-size:13px;margin:0 0 16px}.error{color:var(--danger);font-size:13px;margin:8px 0 0}.notice{background:var(--warning-bg);color:var(--warning-ink);border-radius:6px;padding:9px 11px;font-size:13px;margin:10px 0}.workspace{display:grid;grid-template-columns:1fr 340px;flex:1;min-height:0}@media(max-width:1000px){.workspace{grid-template-columns:1fr;grid-template-rows:minmax(45vh,auto) 1fr}.sidebar{max-height:none}}@media(max-width:640px){body{font-size:16px}.topbar{padding:10px 14px;gap:10px}.topbar 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li.done:before{content:"✓";background:var(--accent-soft);color:var(--accent)}.tag{display:inline-block;font-size:11px;font-weight:600;padding:2px 7px;border-radius:99px;background:var(--accent-soft);color:var(--accent)}.marker-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:5px}button.marker{display:flex;align-items:center;gap:7px;font-size:12px;padding:6px 8px;text-align:left}button.marker.selected{border-color:var(--accent);background:var(--accent-soft)}.marker-glyph{display:inline-grid;place-items:center;width:19px;height:19px;flex-shrink:0;border-radius:50%;color:#fff;font-size:10px;font-weight:700;line-height:1}.annotation-photo{display:block;margin-top:6px;max-width:100%;width:160px;border-radius:6px;border:1px solid var(--line)}.plan-grid{display:grid;gap:10px;margin-top:14px}@media(min-width:700px){.plan-grid{grid-template-columns:repeat(3,1fr)}}.plan{border:1px solid var(--line);border-radius:var(--radius);padding:14px;display:flex;flex-direction:column;gap:6px}.plan.current{border-color:var(--accent);background:var(--accent-soft)}.plan-name{font-weight:700}.plan-price{font-size:20px;font-weight:700;font-variant-numeric:tabular-nums}.plan-features{list-style:none;margin:0 0 10px;padding:0;font-size:13px;color:var(--ink-muted);display:grid;gap:3px;flex:1}.plan-features li:before{content:"✓ ";color:var(--accent);font-weight:700}.floor-tabs{display:grid;gap:4px}button.floor{text-align:left;font-size:13px;padding:7px 10px}button.floor.selected{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}button[aria-pressed=true]{border-color:var(--accent)}.walls{list-style:none;margin:8px 0 0;padding:0;display:grid;gap:3px}.walls li{padding:0;border:none}button.wall{display:flex;align-items:center;gap:8px;width:100%;padding:5px 8px;font-size:12px;text-align:left;background:transparent}button.wall span:first-child{flex:1}button.wall 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