:root{font-family:Arial,Helvetica,sans-serif;color:#151515;background:#f5f5f5;font-size:13px}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit;color:inherit}button,select{cursor:pointer}button{padding:6px 9px;border:1px solid #aaa;border-radius:3px;background:#f1f1f1;line-height:1.25}button:hover:not(:disabled){background:#e6e6e6}button:disabled{cursor:default;opacity:.45}input:not([type=range]):not([type=checkbox]),select{min-width:0;padding:5px;border:1px solid #aaa;border-radius:2px;background:#fff}input:invalid{border-color:#a00!important}input[type=range]{width:100%;min-width:0;margin:0;accent-color:#555}input[type=checkbox]{accent-color:#444}button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,a:focus-visible{outline:2px solid #444;outline-offset:2px}#app{display:grid;grid-template-columns:330px minmax(0,1fr);height:100vh;height:100dvh}#controls{overflow-y:auto;padding:19px 17px 28px;background:#fff;border-right:1px solid #ccc}header{margin-bottom:20px}h1{font-size:21px;line-height:1.15;margin:0 0 5px;font-weight:600;letter-spacing:-.5px}.subtitle{color:#555;margin:0;font-size:12px}.creator-credit{margin:8px 0 0;font-size:11px;color:#555}.creator-credit a{color:var(--action-blue);text-underline-offset:2px}h2{margin:18px 0 11px;font-size:14px}fieldset{border:0;padding:0;margin:0;min-width:0}.field{display:flex;flex-direction:column;gap:5px;margin-bottom:11px}.paired-fields{display:grid;grid-template-columns:1fr 1fr;gap:10px}.parameter{margin-bottom:11px}.parameter>label{display:block;margin-bottom:4px;line-height:1.25;font-size:12px}.parameter>input,.parameter>select{width:100%}.range-pair{display:grid;grid-template-columns:minmax(0,1fr) 75px;gap:8px;align-items:center}.range-pair input[type=number]{width:100%;padding:3px 4px!important}.explanation,.hint{font-size:11px;color:#555;line-height:1.45;margin:7px 0 11px}.explanation{padding:8px;background:#f5f5f5;border-left:2px solid #aaa}.full{width:100%}.primary{font-weight:600;padding:8px;background:#e9e9e9;border-color:#888}details{border-top:1px solid #d8d8d8;padding:9px 0}summary{font-weight:600;cursor:pointer;line-height:1.4}details[open] summary{margin-bottom:10px}.button-row{display:flex;flex-wrap:wrap;gap:6px}.state-actions{margin-top:9px}.state-actions button{flex:1;font-size:11px}pre{white-space:pre-wrap;overflow-wrap:anywhere;font-size:10px;line-height:1.5;background:#f6f6f6;padding:8px}#workspace{min-width:0;display:flex;flex-direction:column;height:100%}#workspace:fullscreen{width:100%;height:100%;min-height:0;background:#f5f5f5}.viewport-toolbar{display:flex;align-items:center;flex-wrap:wrap;gap:12px;padding:10px 15px;border-bottom:1px solid #d0d0d0;background:#fafafa}.viewport-toolbar label{display:flex;gap:5px;align-items:center;font-size:12px}.viewport-toolbar select{max-width:180px}.viewport-toolbar button{font-size:11px}.viewport-actions{display:flex;gap:6px;margin-left:auto}.checkbox{white-space:nowrap}#viewport{flex:1;min-height:200px;position:relative;overflow:hidden;background:#f5f5f5}#viewport>canvas{display:block;width:100%;height:100%;touch-action:none}#viewport-label{pointer-events:none;position:absolute;top:16px;left:18px;display:flex;flex-direction:column;gap:5px;max-width:calc(100% - 36px);font-size:12px}#viewport-label strong{font-weight:500}#legend{color:#666;font-size:11px}#interaction-hint{position:absolute;bottom:10px;left:18px;font-size:11px;color:#666;margin:0;pointer-events:none}#map-view{position:absolute;inset:55px 20px 35px;display:flex;justify-content:center;align-items:center}#map-view canvas{max-width:100%;max-height:100%;object-fit:contain;width:auto;height:100%;image-rendering:pixelated;border:1px solid #999}#statistics{border-top:1px solid #ddd;padding:10px 15px;font-size:11px;color:#444;background:#fafafa;display:flex;flex-wrap:wrap;gap:8px 20px}#status-area{padding:9px 15px 11px;border-top:1px solid #ddd;background:#fff;min-height:44px}.status-line{display:flex;align-items:center;gap:12px;font-size:12px;min-height:21px}#status{flex:1;line-height:1.4}#status.error{color:#9b1010}#cancel{font-size:11px}progress{width:100%;height:5px;margin-top:5px;accent-color:#555}[hidden]{display:none!important}@media (max-width: 760px){#app{display:flex;flex-direction:column;height:auto;min-height:100dvh}#workspace{order:0;height:64dvh;min-height:420px}#controls{order:1;border-top:1px solid #ccc;border-right:0;overflow:visible;padding:17px}.viewport-toolbar{padding:8px;gap:6px 10px}.viewport-toolbar label{font-size:11px}.viewport-toolbar select{max-width:155px}.viewport-actions{margin-left:0}#viewport-label{left:10px;top:10px;font-size:11px}#interaction-hint{left:10px;font-size:9px;bottom:6px}#statistics{padding:7px 9px;gap:5px 13px;font-size:10px}#status-area{padding:6px 9px}.status-line{font-size:11px}#controls>section,#controls>header,#notes-panel{max-width:540px;margin-left:auto;margin-right:auto}}.notice{margin:0;padding:8px 12px;font-size:11px;line-height:1.4;background:#eee;border-bottom:1px solid #aaa}:root{--action-blue: #185bc0;--action-green: #176b5b}#controls{padding:20px 15px 28px}header{margin:0 3px 20px}.lab-section{border:1px solid #d6dce2;border-radius:5px;margin-bottom:15px;overflow:hidden}.section-heading{margin:0;font-size:14px}.section-toggle{display:flex;justify-content:space-between;align-items:center;gap:8px;width:100%;min-height:47px;padding:12px;text-align:left;background:#f4f6f8;border:0;border-radius:0;font-weight:600}.section-toggle:hover:not(:disabled){background:#e9edf2}.section-toggle:focus-visible{outline-offset:-3px}.settings-affordance{display:flex;align-items:center;gap:5px;flex-shrink:0;font-size:11px;font-weight:400;color:#34465b}.settings-label{text-decoration:underline;text-underline-offset:2px}.chevron{font-size:18px;line-height:12px}.section-toggle[aria-expanded=true] .chevron{transform:rotate(180deg)}.quick-controls{padding:12px}.quick-controls .field{gap:5px;font-size:12px}.quick-controls select{width:100%;min-height:34px;font-size:13px}button.primary,button.erosion-action{min-height:41px;border:1px solid transparent;padding:10px 9px;font-weight:600;font-size:13px;color:#fff}button.primary{background:var(--action-blue)}button.primary:hover:not(:disabled){background:#124895}button.erosion-action{background:var(--action-green)}button.erosion-action:hover:not(:disabled){background:#105345}button.primary:disabled,button.erosion-action:disabled{opacity:.55}.erosion-actions{display:grid;gap:8px}.settings-region{padding:12px;border-top:1px solid #dbe0e5}.settings-intro{font-size:11px;line-height:1.5;color:#4a5562;margin:0 0 12px}.settings-intro strong{color:#17488b}.settings-divider{font-size:12px;font-weight:600;border-top:1px solid #dde0e5;margin:17px 0 12px;padding-top:12px}#seed-hint{margin-top:-4px}#base-seed{font-family:ui-monospace,monospace;font-size:12px}.parameter{margin-bottom:13px}.parameter>label{margin-bottom:6px}.range-pair{grid-template-columns:minmax(0,1fr) 78px}.range-pair input[type=range]{height:27px;accent-color:var(--action-blue)}.range-pair input[type=number]{height:29px}#erosion-settings input[type=range]{accent-color:var(--action-green)}#erosion-panels details:first-child{border-top:0}#erosion-panels summary{font-size:12px;padding:4px 0}#erosion-panels details[open] summary{margin-bottom:12px}.erosion-history{padding:0 12px 4px}.erosion-history .state-actions{margin-top:0}.erosion-history .state-actions button{min-height:33px}#notes-panel{border:0;padding:4px 3px}#notes-panel>summary{font-size:12px;font-weight:400;color:#485461}#viewport-label strong{overflow-wrap:anywhere}@media (max-width: 760px){#controls{padding:17px}.section-toggle{min-height:49px}.settings-affordance{font-size:12px}.quick-controls select{min-height:38px}button.primary,button.erosion-action{min-height:43px}.range-pair input[type=range]{height:35px}.range-pair input[type=number]{height:33px}}