.card{border-radius:16px}.surface{background:var(--surface);border:1px solid var(--hairline);border-radius:18px}.nav-link{position:relative;display:flex;align-items:baseline;gap:.7rem;width:fit-content;padding:.3rem 0;background:transparent;border:none;cursor:pointer;color:var(--text-muted);font-weight:500;font-size:.95rem;letter-spacing:-.01em;transition:color .25s var(--ease-out),transform .25s var(--ease-out)}.nav-link:hover{color:var(--text-strong);transform:translateX(3px)}.nav-link:active{transform:scale(.98)}.nav-index{font-family:var(--font-geist-mono),monospace;font-size:.68rem;letter-spacing:.05em;color:var(--text-muted);transition:color .25s var(--ease-out)}.nav-link.active,.nav-link.active .nav-index{color:var(--accent)}.nav-marker{position:absolute;left:-.9rem;top:0;bottom:0;height:1rem;margin-block:auto;width:2px;border-radius:2px;background:var(--accent)}