:root{--brand:#0d6efd;--muted:#6c757d;--card-bg:#ffffff;--page-bg:#f8f9fa}body{background:var(--page-bg);color:#212529;font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial}header.site-header{background:linear-gradient(90deg,var(--brand),#0b5ed7);color:#fff;padding:1.25rem 0}header h1{margin:0;font-weight:700}header p{margin:.25rem 0 0;opacity:.95}.tool-card{background:var(--card-bg);border-radius:12px;padding:1rem;box-shadow:0 6px 20px rgba(15,23,42,.06)}.ad-placeholder{background:#e9ecef;border:1px dashed #ced4da;display:flex;align-items:center;justify-content:center;color:#495057;min-height:90px}.result-number{font-size:2rem;font-weight:700;color:var(--brand)}.small-muted{color:var(--muted)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}:focus{outline:3px solid rgba(13,110,253,.12);outline-offset:3px}@media (min-width:992px){main .left-col{border-right:1px solid #e9ecef;padding-right:1.25rem}}