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var(--border)}.brand{display:flex;align-items:center;gap:12px}.brand-mark{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;background:var(--accent);color:var(--surface);font-size:20px;font-weight:700}.brand-name{font-size:22px;font-weight:700;letter-spacing:.04em;color:var(--text)}.desktop-nav{display:flex;margin-left:auto;flex-wrap:wrap;gap:6px;padding:6px;background:var(--surface-muted);border-radius:var(--radius-pill)}.nav-btn{min-height:44px;padding:10px 20px;border:none;border-radius:var(--radius-pill);background:transparent;color:var(--text-sub);font-size:15px;font-weight:500;cursor:pointer;transition:background-color .15s,border-color .15s,color .15s}.nav-btn:hover{color:var(--text)}.nav-btn.active{background:var(--surface);color:var(--accent);font-weight:700;box-shadow:0 1px 2px #2a273314}.repo-link{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 18px 0 14px;border-radius:var(--radius-pill);border:1.5px solid 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