:root{--paper: #f7f5ee;--paper-2: #efece4;--ink: #1a1a1a;--ink-dim: #555;--rule: #c8c1ad;--accent: #2563eb;--accent-soft: #dbeafe;--danger: #b91c1c;--radius: 10px;--shadow: 0 1px 2px rgba(0, 0, 0, .04), 0 6px 16px rgba(0, 0, 0, .06);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif;color-scheme:light}*{box-sizing:border-box}html,body{margin:0;background:var(--paper);color:var(--ink);line-height:1.45}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.app-shell{min-height:100vh;display:flex;flex-direction:column}.top-bar{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;background:var(--paper);border-bottom:1px solid var(--rule)}.top-bar h1{font-size:17px;font-weight:700;letter-spacing:.04em;margin:0;text-transform:uppercase}.top-bar nav{display:flex;gap:16px}.top-bar nav button{background:none;border:0;padding:6px 10px;border-radius:6px;font:inherit;color:var(--ink-dim);cursor:pointer}.top-bar nav button.active,.top-bar nav button:hover{background:var(--paper-2);color:var(--ink)}main{flex:1;max-width:760px;width:100%;margin:0 auto;padding:24px}.card{background:#fff;border:1px solid var(--rule);border-radius:var(--radius);padding:20px;margin-bottom:16px;box-shadow:var(--shadow)}h2{margin:0 0 12px;font-size:18px;font-weight:600}h3{margin:16px 0 8px;font-size:14px;font-weight:600;color:var(--ink-dim);text-transform:uppercase;letter-spacing:.06em}label{display:block;font-size:13px;color:var(--ink-dim);margin-bottom:4px}select,input[type=text],input[type=number]{width:100%;padding:8px 10px;border:1px solid var(--rule);border-radius:6px;background:var(--paper);font:inherit}button.primary{background:var(--ink);color:var(--paper);border:0;padding:9px 16px;border-radius:6px;font:inherit;font-weight:600;cursor:pointer}button.primary:hover{opacity:.9}button.danger{background:#fff;color:var(--danger);border:1px solid var(--danger);padding:9px 16px;border-radius:6px;font:inherit;cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}.row{display:flex;gap:12px;align-items:end;flex-wrap:wrap}.row>*{flex:1 1 160px}.banner{background:var(--accent-soft);border:1px solid #93c5fd;border-radius:6px;padding:10px 12px;margin-bottom:16px;font-size:14px}.banner.error{background:#fee2e2;border-color:#fca5a5;color:var(--danger)}.scene-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px}.scene-grid button{background:#fff;border:1px solid var(--rule);border-radius:8px;padding:14px;cursor:pointer;font:inherit;text-align:left}.scene-grid button.active{border-color:var(--ink);background:var(--paper-2);box-shadow:inset 0 0 0 1px var(--ink)}.muted{color:var(--ink-dim);font-size:13px}.slot-row{display:grid;grid-template-columns:1fr 1fr 1fr auto;gap:8px;align-items:end;margin-bottom:8px}