:root{color-scheme:light;--p:#176b55;--dark:#104d3e;--soft:#e9f5f0;--text:#172d25;--muted:#5d7067;--line:#dce5e0;--bg:#f4f7f5;--danger:#b33529}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif}.shell{width:min(1240px,calc(100% - 48px));margin:auto}.bar,.section-heading,.page-heading,.actions{display:flex;align-items:center;justify-content:space-between;gap:16px}.sitebar{background:white;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted)}.sitebar .bar{min-height:64px}.back{color:var(--p);text-decoration:none;font-weight:650;min-height:40px;display:inline-flex;align-items:center}.page-heading{padding:30px 0 24px;flex-wrap:wrap}.eyebrow{font-size:13px;letter-spacing:.12em;font-weight:700;color:var(--p);margin:0 0 5px}h1{font-size:clamp(27px,4vw,36px);letter-spacing:-.04em;margin:0 0 7px;line-height:1.3}h2{font-size:20px;letter-spacing:-.02em;margin:0}h3{font-size:16px;margin:0 0 14px}.muted{color:var(--muted);margin:0}.hint,.footnote{font-size:14px;color:var(--muted);margin:6px 0 0;line-height:1.7}.panel{background:white;border:1px solid var(--line);border-radius:16px;padding:24px;margin-bottom:20px;box-shadow:0 4px 18px #173d2f04}.project-settings{display:grid;grid-template-columns:minmax(200px,1.15fr) 125px minmax(250px,1.5fr);gap:24px;align-items:start;margin-bottom:7px}.project-settings label:not(.check){margin:0}.increase-setting{padding-top:5px}.draft-status{font-size:13px;color:var(--muted);min-height:21px;margin:7px 4px 20px}.section-heading{margin-bottom:20px;flex-wrap:wrap}.actions{justify-content:flex-end;flex-wrap:wrap;gap:8px}.count{display:inline-flex;font-size:14px;background:var(--soft);color:var(--p);border-radius:20px;padding:1px 9px;margin-left:6px;font-variant-numeric:tabular-nums}.type-chip{font-size:14px;color:var(--p);background:var(--soft);padding:6px 12px;border-radius:8px}button,input,select,textarea{font:inherit}button{cursor:pointer;min-height:42px;padding:8px 14px;border:1px solid transparent;border-radius:9px;font-size:14px;font-weight:650;white-space:nowrap}.primary{background:var(--p);color:white}.secondary{background:var(--soft);color:var(--p);border-color:#cbe4d8}.quiet{color:var(--muted);background:white;border-color:var(--line)}.danger{color:var(--danger);background:white;border-color:#edd5d0}.small{min-height:34px;padding:5px 9px;font-size:14px}button:hover:not(:disabled){filter:brightness(.96)}button:disabled{opacity:.45;cursor:not-allowed}input:not([type=checkbox]),select,textarea{display:block;width:100%;min-width:0;background:white;color:var(--text);border:1px solid #cfdcd4;border-radius:8px;padding:9px 11px;font-size:16px;min-height:43px}textarea{resize:vertical}label{display:block;font-size:14px;font-weight:650;margin-bottom:14px}label input,label select{margin-top:7px}input:focus,select:focus,textarea:focus{outline:0;border-color:var(--p);box-shadow:0 0 0 3px #176b551a}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--p);outline-offset:3px}input[type=checkbox]{width:18px;height:18px;accent-color:var(--p);flex-shrink:0}.check{display:flex;align-items:center;gap:9px;margin:0;min-height:34px;font-size:15px}.check input{margin:0}.table-scroll{overflow:auto}table{border-collapse:collapse;width:100%;font-size:14px}th{text-align:left;padding:11px 10px;background:#f1f6f3;color:#486453;font-size:14px;font-weight:650;border-bottom:1px solid var(--line)}td{padding:10px;border-bottom:1px solid #e7eee9;vertical-align:middle}td input,td select{font-size:15px!important}.road-table{min-width:820px}.road-table th:nth-child(1){width:19%}.road-table th:nth-child(2),.road-table th:nth-child(3){width:15%}.road-table th:nth-child(4){width:28%}.row-actions{display:flex;gap:6px;align-items:center}.selected td{background:#f0f8f4}.selected td:first-child{box-shadow:inset 3px 0 var(--p)}.selected .configure{color:white;background:var(--p);border-color:var(--p)}.extra-table{min-width:900px}.extra-table th:nth-child(1){width:18%}.extra-table th:nth-child(2){width:23%}.extra-table th:nth-child(3){width:10%}.extra-table th:nth-child(4){width:13%}.extra-table th:nth-child(5){width:24%}.actions>select{width:auto;max-width:230px}.editor-top{display:grid;grid-template-columns:1.2fr 1fr;gap:24px}.block{border-top:1px solid var(--line);padding-top:20px;margin-top:6px}.layer-table{min-width:640px}.layer-table th:first-child{width:45%}.layer-table th:nth-child(2),.layer-table th:nth-child(3){width:21%}.option-box{border:1px solid var(--line);border-radius:11px;padding:15px 18px;margin-top:14px}.option-box:has(input[type=checkbox]:checked){border-color:#bad8c9;background:#fbfdfc}.option-body{padding-top:15px}.field-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 18px}.field-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.field-grid .wide{grid-column:1 / -1}.option-body .hint{margin:0 0 10px}.inline-note{font-size:14px;color:var(--p);margin:0}.summary-table th:last-child{width:23%}.numeric{text-align:right;font-variant-numeric:tabular-nums}.empty{text-align:center;font-size:14px;color:var(--muted);padding:12px}.issues{padding:12px 16px;background:#fff5ee;border:1px solid #f0dac8;border-radius:9px;color:#86522c;font-size:14px;margin-bottom:16px}.issues ul{margin:6px 0 0;padding-left:22px}.footnote{margin:8px 3px 115px}.export-bar{position:fixed;bottom:0;left:0;right:0;border-top:1px solid var(--line);background:#fffffff5;backdrop-filter:blur(12px);padding:14px 0 max(14px,env(safe-area-inset-bottom));z-index:10;box-shadow:0 -5px 20px #173d2f06}.totals{display:flex;gap:25px;flex-wrap:wrap;font-size:14px;color:var(--muted)}.totals strong{font-size:20px;font-weight:700;color:var(--p);margin-left:6px}.export-bar .primary{font-size:16px;padding:10px 26px}.toast{position:fixed;left:50%;bottom:94px;max-width:calc(100% - 32px);transform:translateX(-50%);padding:12px 20px;border-radius:10px;background:#17372cee;color:white;font-size:14px;z-index:40;display:none}.toast.show{display:block}dialog{border:1px solid var(--line);border-radius:16px;padding:26px;width:min(640px,calc(100% - 30px));color:var(--text);box-shadow:0 20px 80px #15372d33}dialog::backdrop{background:#102a2255}dialog label{margin:16px 0 7px}dialog .hint{margin-bottom:15px}.error{font-size:14px;color:var(--danger);min-height:22px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}[hidden]{display:none!important}@media(max-width:900px){.project-settings{grid-template-columns:1fr 125px;gap:16px}.increase-setting{grid-column:1 / -1}.editor-top{grid-template-columns:1fr;gap:0}}@media(max-width:600px){.shell{width:calc(100% - 24px)}.panel{padding:17px;border-radius:13px}.page-heading{padding:24px 0 20px}.page-heading .actions{justify-content:flex-start}.section-heading{gap:12px}.section-heading>.actions{justify-content:flex-start}.field-grid,.field-grid.two{grid-template-columns:1fr}.option-box{padding:13px}.totals{gap:2px;flex-direction:column;font-size:12px}.totals strong{font-size:17px}.export-bar .primary{font-size:15px;padding:10px 16px}.footnote{margin-bottom:125px}.project-settings{grid-template-columns:1fr 98px}.project-settings input{font-size:15px}h2{font-size:18px}}

/* Second edition: compact help and direct road switching. */
.version{font-size:13px;vertical-align:middle;font-weight:600;letter-spacing:0;color:var(--p);background:var(--soft);padding:4px 9px;border-radius:6px}.quick-help{border-left:3px solid var(--p);padding:12px 18px;margin-bottom:22px;background:#edf5f1;border-radius:0 10px 10px 0}.help-top{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.help-top p{margin:0;font-size:14px}.quick-help summary{cursor:pointer;color:var(--p);font-size:14px;padding:9px 0}.quick-help ol{margin:5px 0 10px;padding-left:22px;font-size:14px}.quick-help li{margin-bottom:9px}.editor-switch{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:12px 0 20px}.editor-switch label{margin:0}.editor-switch select{max-width:300px}.extra-table{min-width:1110px}.extra-table th:nth-child(1){width:17%}.extra-table th:nth-child(2){width:17%}.extra-table th:nth-child(3){width:21%}.extra-table th:nth-child(4){width:8%}.extra-table th:nth-child(5){width:11%}.extra-table th:nth-child(6){width:20%}.editor-panel,#roadsHeading{scroll-margin-top:20px}@media(max-width:600px){.editor-switch select{max-width:none;flex:1;min-width:160px}.quick-help{padding:12px}.version{display:inline-block}}