:root{color-scheme:light;--bg:#f6f7f9;--panel:#fff;--line:#d8dde6;--line-strong:#b6bfcc;--text:#1f2937;--muted:#667085;--muted-2:#8a94a6;--primary:#1f5eff;--primary-dark:#1748c7;--danger:#c24135;--danger-soft:#fff1f0;--success:#16794c;--warning:#9a6700;--warning-soft:#fff8db;--surface:#eef2f7}*{box-sizing:border-box}body,html{margin:0;min-height:100%;background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}.app-shell{min-height:100vh;padding:24px}.app-header{max-width:1280px;margin:0 auto 16px;display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.app-title{margin:0;font-size:24px;line-height:1.2}.app-subtitle{margin:6px 0 0;color:var(--muted);font-size:14px}.editor-layout{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:300px minmax(0,1fr) 340px;grid-gap:16px;gap:16px;align-items:start}.panel{background:var(--panel);border:1px solid var(--line);border-radius:8px}.panel-header{padding:14px 16px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}.panel-title{margin:0;font-size:15px;font-weight:700}.panel-body{padding:16px}.stack{display:grid;grid-gap:14px;gap:14px}.row,.row-between{display:flex;align-items:center;gap:8px}.row-between{justify-content:space-between}.field{display:grid;grid-gap:6px;gap:6px}.field label{color:var(--muted);font-size:12px;font-weight:650}.input,.select,.textarea{width:100%;border:1px solid var(--line-strong);border-radius:6px;background:#fff;color:var(--text);padding:9px 10px;outline:none}.textarea{min-height:132px;resize:vertical;line-height:1.45}.input:focus,.select:focus,.textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,94,255,.12)}.button{border:1px solid var(--line-strong);background:#fff;color:var(--text);border-radius:6px;min-height:36px;padding:8px 12px;font-weight:650}.button:hover:not(:disabled){background:var(--surface)}.button.primary{border-color:var(--primary);background:var(--primary);color:#fff}.button.primary:hover:not(:disabled){background:var(--primary-dark)}.button.danger{border-color:#f0b5af;background:var(--danger-soft);color:var(--danger)}.button.compact{min-height:30px;padding:5px 8px;font-size:12px}.button.full{width:100%}.segmented{display:grid;grid-template-columns:repeat(2,1fr);grid-gap:6px;gap:6px}.segmented.three{grid-template-columns:repeat(3,1fr)}.node-list{display:grid;grid-gap:8px;gap:8px}.node-card{width:100%;text-align:left;border:1px solid var(--line);background:#fff;border-radius:8px;padding:10px}.node-card.selected{border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,94,255,.12)}.node-type{display:inline-flex;align-items:center;height:22px;border-radius:999px;padding:0 8px;background:var(--surface);color:var(--muted);font-size:12px;font-weight:700}.node-title{display:block;margin-top:8px;font-weight:700}.node-meta{margin-top:4px;color:var(--muted);font-size:12px}.notice{border-radius:6px;padding:10px 12px;font-size:13px;line-height:1.45}.notice.warning{border:1px solid #f1d486;background:var(--warning-soft);color:var(--warning)}.notice.error{border:1px solid #f0b5af;background:var(--danger-soft);color:var(--danger)}.notice.info{border:1px solid #c5d3f7;background:#eef4ff;color:#23418a}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:8px}table{width:100%;border-collapse:collapse;font-size:13px}td,th{border-bottom:1px solid var(--line);padding:8px 10px;text-align:left;white-space:nowrap}th{background:#f8fafc;color:var(--muted);font-weight:700}tr:last-child td{border-bottom:0}.summary-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:8px;gap:8px}.summary-item{border:1px solid var(--line);border-radius:8px;padding:10px;background:#fff}.summary-label{color:var(--muted);font-size:12px}.summary-value{margin-top:4px;font-size:20px;font-weight:800}.page-list{display:grid;grid-gap:10px;gap:10px}.page-item{border:1px solid var(--line);border-radius:8px;padding:10px;display:grid;grid-template-columns:84px minmax(0,1fr);grid-gap:10px;gap:10px}.page-thumb{width:84px;aspect-ratio:16/9;border:1px solid var(--line);border-radius:4px;object-fit:contain;background:#f9fafb}.modal-backdrop{position:fixed;inset:0;z-index:100;background:rgba(15,23,42,.52);display:flex;align-items:center;justify-content:center;padding:24px}.modal{width:min(560px,100%);background:#fff;border-radius:8px;border:1px solid var(--line)}.runner{position:fixed;inset:0;z-index:200;background:#fff;color:#111827}.runner,.runner-canvas{display:flex;align-items:center;justify-content:center}.runner-canvas{width:min(100vw,calc(100vh * var(--canvas-ratio)));height:min(100vh,calc(100vw / var(--canvas-ratio)));background:var(--canvas-bg);position:relative;overflow:hidden}.runner-image{width:100%;height:100%;object-fit:contain}.runner-button{position:absolute;left:50%;bottom:32px;transform:translateX(-50%)}.stimulus{font-size:clamp(48px,12vh,132px);font-weight:800;line-height:1;text-align:center;max-width:90%;overflow-wrap:anywhere}.feedback{position:absolute;left:50%;bottom:80px;transform:translateX(-50%);min-height:24px;color:#334155;font-size:20px;font-weight:700}.completion{display:grid;grid-gap:20px;gap:20px;text-align:center;padding:32px}.completion h2{margin:0;font-size:30px}.completion p{margin:0;color:var(--muted)}.hidden-input{display:none}@media (max-width:1120px){.editor-layout{grid-template-columns:280px minmax(0,1fr)}.right-panel{grid-column:1/-1}}@media (max-width:760px){.app-shell{padding:12px}.app-header,.editor-layout{display:grid;grid-template-columns:1fr}}