:root{--bg:#f6f7f9;--card:#fff;--text:#111827;--muted:#6b7280;--line:#e5e7eb;--accent:#111827;--ok:#166534;--ok-bg:#ecfdf3;--warn:#92400e;--warn-bg:#fffbeb;--bad:#991b1b;--bad-bg:#fef2f2;--focus:#2563eb}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.shell{grid-template-columns:240px 1fr;min-height:100vh;display:grid}.nav{color:#e5e7eb;background:#0b0f14;padding:24px 18px}.brand{margin-bottom:28px;font-size:18px;font-weight:800}.nav a{color:#aeb7c4;border-radius:10px;margin:4px 0;padding:10px 12px;text-decoration:none;display:block}.nav a.active,.nav a:hover{color:#fff;background:#1b222d}.main{width:100%;max-width:1600px;margin:auto;padding:30px 34px}.topbar{justify-content:space-between;align-items:center;gap:16px;margin-bottom:24px;display:flex}.title{letter-spacing:-.02em;font-size:28px;font-weight:750}.sub{color:var(--muted);font-size:14px}.btn{border:1px 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