:root{--arc-red:#900;--panel-bg:#fff;--workspace:#f4f5f7;--border:#d5d8dd;--text:#1a1d21;--muted:#5b6169;--selected-outline:#f90}:root,html{color-scheme:light}*{box-sizing:border-box}body,html{margin:0;height:100%;color:var(--text);background:var(--workspace);font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:14px}button,input,select,textarea{color:var(--text);font:inherit}input::placeholder,textarea::placeholder{color:var(--muted);opacity:1}.app-shell{display:flex;flex-direction:column;height:100vh}.app-header{display:flex;align-items:center;gap:14px;padding:10px 16px;background:var(--panel-bg);border-bottom:1px solid var(--border)}.app-header .mark{width:26px;height:26px;flex:none;background:var(--arc-red);-webkit-mask:linear-gradient(#000,#000) center/10px 26px no-repeat,linear-gradient(#000,#000) center/26px 10px no-repeat;mask:linear-gradient(#000,#000) center/10px 26px no-repeat,linear-gradient(#000,#000) center/26px 10px no-repeat}.app-header h1{margin:0;font-size:16px;font-weight:700}.app-header p{margin:1px 0 0;color:var(--muted);font-size:12px}.app-title{flex:1 1}.rail-toggle{margin-left:auto;background:var(--panel-bg);color:var(--arc-red);border:1px solid var(--border);border-radius:6px;padding:6px 12px;cursor:pointer;font-weight:600}.rail-toggle:hover{border-color:var(--arc-red)}.primary-btn{background:var(--arc-red);color:#fff;border:1px solid var(--arc-red);border-radius:6px;padding:7px 14px;cursor:pointer;font-weight:700}.primary-btn:hover{background:#7a0000}.primary-btn:disabled{opacity:.45;cursor:not-allowed}.user-chip{gap:10px;font-size:12px;color:var(--muted);border-left:1px solid var(--border);padding-left:12px}.signin-screen,.user-chip{display:flex;align-items:center}.signin-screen{height:100vh;justify-content:center;background:var(--workspace);padding:24px}.signin-card{background:var(--panel-bg);border:1px solid var(--border);border-radius:12px;padding:40px;max-width:420px;text-align:center}.signin-card .mark{width:34px;height:34px;display:inline-block;margin-bottom:12px;background:var(--arc-red);-webkit-mask:linear-gradient(#000,#000) center/12px 34px no-repeat,linear-gradient(#000,#000) center/34px 12px no-repeat;mask:linear-gradient(#000,#000) center/12px 34px no-repeat,linear-gradient(#000,#000) center/34px 12px no-repeat}.signin-card h1{font-size:20px;margin:0 0 10px}.signin-card p{color:var(--muted);line-height:1.5;margin:0 0 20px}.signin-card .muted{margin-bottom:0}.hint-text{font-size:12px;color:var(--muted);background:var(--workspace);border-radius:6px;padding:8px 10px;margin:0 0 14px;line-height:1.4}.app-body{flex:1 1;display:flex;min-height:0}.rail{background:var(--panel-bg);border-right:1px solid var(--border);padding:16px;overflow-y:auto;flex:none}.rail-resize{width:6px;cursor:col-resize;background:transparent;flex:none}.rail-resize:hover{background:var(--border)}.map-wrap{position:relative;flex:1 1;min-width:0}.map-container{position:absolute;inset:0}.map-hint{position:absolute;z-index:5;top:12px;left:50%;transform:translateX(-50%);background:var(--panel-bg);border:1px solid var(--border);border-radius:999px;padding:6px 16px;color:var(--muted);box-shadow:0 1px 4px rgba(0,0,0,.08)}.field{margin-bottom:16px}.field label{display:block;font-weight:700;margin-bottom:6px}.field select{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:6px;background:#fff}.combo{position:relative}.combo-input{width:100%;padding:9px 30px 9px 11px;border:1px solid var(--border);border-radius:6px;background:#fff;color:var(--text);font-size:14px}.combo-input:focus{outline:none;border-color:var(--arc-red);box-shadow:0 0 0 2px rgba(153,0,0,.12)}.combo-input::placeholder{color:var(--muted);opacity:1}.combo-clear{position:absolute;right:6px;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--muted);cursor:pointer;font-size:13px;padding:4px 6px;line-height:1}.combo-clear:hover{color:var(--text)}.combo-list{position:absolute;z-index:40;top:calc(100% + 4px);left:0;right:0;max-height:320px;overflow-y:auto;background:#fff;border:1px solid var(--border);border-radius:8px;box-shadow:0 6px 20px rgba(0,0,0,.14)}.combo-group{position:-webkit-sticky;position:sticky;top:0;background:#f1f2f4;color:#3a3f45;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:5px 12px;border-bottom:1px solid var(--border)}.combo-item{padding:8px 12px;font-size:13px;color:var(--text);cursor:pointer}.combo-item.hi{background:#f3ede1}.combo-item.sel{color:var(--arc-red);font-weight:700}.combo-empty{padding:12px;color:var(--muted);font-size:13px}.summary-panel h2,.survey-panel h2,.toggle-panel h2{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 0 10px}.toggle-panel{border-top:1px solid var(--border);padding-top:16px;margin-bottom:16px}.toggle{display:flex;gap:10px;padding:8px 0;cursor:pointer;align-items:start}.toggle.is-disabled{opacity:.5;cursor:not-allowed}.toggle input{margin-top:2px}.toggle-label{display:block;font-weight:600}.toggle-note{display:block;color:var(--muted);font-size:12px}.summary-panel{border-top:1px solid var(--border);padding-top:16px}.summary-head{display:flex;justify-content:space-between;align-items:center}.link-btn{background:none;border:none;color:var(--arc-red);cursor:pointer;font-weight:600;padding:0}.stat-grid{margin:8px 0 0;display:grid;grid-template-columns:1fr 1fr;grid-gap:10px 14px;gap:10px 14px}.stat-grid .stat-wide{grid-column:1/-1}.stat-grid dt{color:var(--muted);font-size:12px}.stat-grid dd{margin:2px 0 0;font-size:16px;font-weight:700}.stat-grid .stat-wide dd{font-size:13px;font-weight:500}.contiguity-note{margin-top:14px;color:var(--muted);font-size:12px;font-style:italic}.standin-note{color:var(--muted);font-size:11px;line-height:1.4}.survey-drawer{width:440px;max-width:92vw;flex:none;background:var(--panel-bg);border-left:1px solid var(--border);display:flex;flex-direction:column;min-height:0}.survey-drawer-head{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border)}.survey-drawer-head h2{margin:0;font-size:15px;font-weight:700}.icon-btn{background:none;border:none;font-size:16px;cursor:pointer;color:var(--muted);padding:4px 8px;border-radius:6px}.icon-btn:hover{background:var(--workspace);color:var(--text)}.survey-drawer .warning{margin:14px 16px}.survey-frame{flex:1 1;width:100%;border:none}.warning{background:#fff4e5;border:1px solid #f0c07a;color:#7a4b00;border-radius:6px;padding:8px 12px;margin-bottom:14px;font-size:13px}.warning code{background:rgba(0,0,0,.06);padding:1px 4px;border-radius:3px}