:root{--primary: #2563eb;--primary-ink: #1e40af;--ink: #1a2233;--muted: #6b7488;--bg: #f3f5fa;--surface: #ffffff;--border: #e3e7f0;--border-strong: #d3d9e6;--ok: #1c8f66;--ok-bg: #e6f6ef;--off: #8a92a6;--off-bg: #eef0f5;--font: "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;--mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font)}code{font-family:var(--mono);font-size:.9em}.app{min-height:100vh}.topbar{height:60px;background:var(--surface);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:28px;padding:0 24px;position:sticky;top:0;z-index:10}.brand{display:flex;align-items:center;gap:8px}.brand-mark{color:var(--primary);font-size:18px}.brand-name{font-weight:800;letter-spacing:-.01em}.brand-tag{font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);border:1px solid 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