:root{--bg:#f8fafc;--card:#ffffff;--muted:#475569;--accent:#2563eb;--border:#e2e8f0;--radius:14px}
*{box-sizing:border-box}
body{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;margin:0;background:var(--bg);color:#0f172a}
header{background:var(--card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}
.container{max-width:960px;margin:0 auto;padding:1rem}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem}
.brand{display:flex;gap:0.75rem;align-items:center}
.brand a{text-decoration:none;color:inherit}
.brand-name{font-weight:700;font-size:1rem}
.brand-tagline{font-size:0.85rem;color:var(--muted);line-height:1.3}
.nav{display:flex;gap:0.35rem;flex-wrap:wrap;justify-content:flex-end}
.nav a{color:var(--muted);padding:0.5rem 0.75rem;border-radius:8px;text-decoration:none}
.nav a:hover{background:#f1f5f9;color:#0f172a}
.toolbar{display:flex;gap:0.5rem;align-items:center}
.hidden{display:none !important}
.button{background:var(--accent);color:#fff;border-radius:999px;padding:0.5rem 0.9rem;border:none;cursor:pointer}
.button.secondary{background:#e2e8f0;color:#0f172a}
main{max-width:960px;margin:1.25rem auto;padding:0 1rem}
.section{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:1.5rem;margin:1rem 0}
.editable[contenteditable="true"]{outline:2px dashed #93c5fd}
.note{background:var(--bg);padding:1rem;border-radius:12px;border:1px solid var(--border)}
.footer{max-width:960px;margin:1rem auto;padding:1rem;text-align:center;color:var(--muted)}
h1{font-size:1.9rem;margin:0 0 .5rem}
h2{margin-top:0}
.lead{font-size:1.1rem;color:var(--muted)}
a{color:var(--accent)}
code{background:#f1f5f9;padding:.1rem .35rem;border-radius:6px;font-size:.9em}
pre{background:#0f172a;color:#e2e8f0;padding:1rem;border-radius:12px;overflow:auto;font-size:.85rem;line-height:1.5}
pre code{background:none;padding:0;color:inherit}
table{border-collapse:collapse;width:100%;margin:1rem 0;font-size:.95rem}
th,td{border:1px solid var(--border);padding:.55rem .7rem;text-align:left;vertical-align:top}
th{background:#f8fafc;font-weight:600}
.muted{color:var(--muted)}
.callout{background:#eff6ff;border:1px solid #bfdbfe;border-left:4px solid var(--accent);padding:1rem;border-radius:10px;margin:1rem 0}
.callout.warn{background:#fef9c3;border-color:#fde68a;border-left-color:#d97706}

/* OMM maturity badges */
.omm{display:inline-block;font-size:.72rem;font-weight:700;padding:.12rem .5rem;border-radius:999px;border:1px solid var(--border);background:#f1f5f9;color:#0f172a;white-space:nowrap}
.omm-3{background:#dbeafe;border-color:#bfdbfe}
.omm-4{background:#dcfce7;border-color:#bbf7d0}
.omm-env{background:#f1f5f9;color:var(--muted)}

/* Spec tree (feedback page) */
.tree-group{margin:1rem 0}
.tree-group h3{margin:.25rem 0 .5rem;color:var(--muted);font-size:.85rem;letter-spacing:.04em;text-transform:uppercase}
.node{border:1px solid var(--border);border-radius:12px;padding:.85rem 1rem;margin:.5rem 0;background:var(--card)}
.node-head{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap}
.node-title{font-weight:600}
.node-desc{color:var(--muted);font-size:.9rem;margin:.25rem 0 0}
.node-actions{margin-left:auto;display:flex;gap:.4rem}
.fb-form{margin-top:.75rem;padding-top:.75rem;border-top:1px dashed var(--border)}
.fb-form label{display:block;font-size:.85rem;font-weight:600;margin:.5rem 0 .2rem}
.fb-form select,.fb-form input,.fb-form textarea{width:100%;padding:.5rem;border:1px solid var(--border);border-radius:8px;font:inherit}
.fb-form textarea{min-height:90px;resize:vertical}
.fb-form .row{display:flex;gap:.6rem;flex-wrap:wrap}
.fb-form .row>*{flex:1;min-width:160px}
.fb-actions{display:flex;gap:.5rem;margin-top:.6rem;flex-wrap:wrap}
.fb-item{border:1px solid var(--border);border-radius:10px;padding:.7rem .85rem;margin:.5rem 0;background:var(--bg)}
.fb-item .meta{font-size:.8rem;color:var(--muted);display:flex;gap:.5rem;flex-wrap:wrap;align-items:center}
.pill{display:inline-block;font-size:.72rem;font-weight:600;padding:.1rem .45rem;border-radius:999px;background:#e2e8f0;color:#0f172a}
.hidden{display:none !important}

/* 3D field/fieldset map */
.map-wrap{position:relative;background:#0b1220;border:1px solid var(--border);border-radius:16px;overflow:hidden}
#fieldmap{display:block;width:100%;height:560px;cursor:grab;touch-action:none}
#fieldmap:active{cursor:grabbing}
.map-controls{display:flex;gap:.5rem;flex-wrap:wrap;margin:.75rem 0;align-items:center}
.map-focus{display:flex;gap:.4rem;flex-wrap:wrap;margin:.5rem 0}
.chip{background:#e2e8f0;color:#0f172a;border:1px solid var(--border);border-radius:999px;padding:.3rem .7rem;cursor:pointer;font:inherit;font-size:.85rem}
.chip.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.legend{display:flex;gap:.9rem;flex-wrap:wrap;margin:.75rem 0;font-size:.85rem;color:var(--muted)}
.legend span{display:inline-flex;align-items:center;gap:.35rem}
.swatch{width:12px;height:12px;border-radius:50%;display:inline-block;border:1px solid rgba(0,0,0,.15)}
.map-tooltip{position:absolute;pointer-events:none;background:#0f172a;color:#e2e8f0;border:1px solid #334155;border-radius:8px;padding:.4rem .6rem;font-size:.8rem;max-width:280px;opacity:0;transition:opacity .08s;z-index:5;box-shadow:0 6px 20px rgba(0,0,0,.4)}
.map-tooltip b{color:#fff}
@media(max-width:640px){.nav{display:none}}