:root{--bg: #f6f7f9;--card: #fff;--ink: #0f172a;--muted: #64748b;--line: #e6e8ec;--brand: #3b82f6;--brand-ink: #1d4ed8;--danger: #ef4444}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.4}.muted{color:var(--muted)}.small{font-size:13px}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.center{min-height:100vh;display:grid;place-items:center}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px}.btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:0;background:var(--brand);color:#fff;font-weight:600;font-size:14px;padding:10px 16px;border-radius:10px;cursor:pointer}.btn:disabled{opacity:.55;cursor:not-allowed}.btn.ghost{background:transparent;color:var(--muted);border:1px solid var(--line)}.login-wrap{min-height:100vh;display:grid;place-items:center;padding:24px}.login-card{width:320px;display:flex;flex-direction:column;gap:12px}.brand{font-size:20px;font-weight:700}.login-card label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted)}.login-card input{padding:10px 12px;border:1px solid var(--line);border-radius:10px;font-size:14px}.error{color:var(--danger);font-size:13px}.shell{min-height:100vh}.topbar{display:flex;align-items:center;gap:18px;padding:10px 18px;background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}.brand-sm{font-weight:700;white-space:nowrap}.modnav{display:flex;gap:6px;flex:1}.modlink{display:inline-flex;align-items:center;gap:6px;padding:7px 12px;border-radius:9px;font-size:14px;text-decoration:none;color:var(--muted)}.modlink:hover{background:var(--bg)}.modlink.active{background:#eef4ff;color:var(--brand-ink);font-weight:600}.modlink .ic{font-size:15px}.userbox{display:flex;align-items:center;gap:10px}.role-badge{font-size:11px;text-transform:uppercase;letter-spacing:.04em;background:#eef4ff;color:var(--brand-ink);border-radius:6px;padding:2px 7px;font-weight:700}.uname{font-size:13px;color:var(--muted)}.content{padding:24px;max-width:920px;margin:0 auto}.module-stub h1{margin:0 0 6px;font-size:22px}.stub-badge{display:inline-block;margin:14px 0 10px;background:#fff7ed;color:#b45309;border:1px solid #fed7aa;border-radius:7px;padding:4px 10px;font-size:12px}