.chk-hero{text-align:center;max-width:680px;margin:0 auto}.chk-pill{display:inline-block;padding:7px 14px;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-size:12.5px;font-weight:800;letter-spacing:.01em}.chk-hero h1{font-size:clamp(34px,5.4vw,52px);font-weight:800;letter-spacing:-.03em;line-height:1.08;margin:18px 0 0}.chk-hero p{font-size:clamp(15.5px,2vw,17.5px);line-height:1.6;color:var(--muted);margin:16px 0 0}.chk-tool{max-width:760px;margin:36px auto 0}.chk-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));grid-gap:12px;gap:12px}.chk-card{padding:18px 20px;border:1px solid var(--stroke);border-radius:12px;background:var(--surface)}.chk-card b{display:block;font-size:15px;font-weight:800}.chk-card span{display:block;font-size:13.5px;line-height:1.6;color:var(--muted);margin-top:6px}