:root{color-scheme:light;--ink:#1b1f24;--muted:#5e6875;--line:#d8dee7;--field:#f7f9fb;--accent:#0b7a75;--accent-strong:#034b47;--surface:#ffffff;--band:#eef5f3}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--surface);font-family:Aptos,Segoe UI,sans-serif}a{color:inherit}.shell{min-height:100vh}.topbar{border-bottom:1px solid var(--line);padding:16px clamp(18px,4vw,56px);display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{font-weight:800;font-size:18px}.nav{display:flex;gap:14px;color:var(--muted);font-size:14px}.main{padding:32px clamp(18px,4vw,56px) 64px}.hero{background:var(--band);border-bottom:1px solid var(--line);padding:42px clamp(18px,4vw,56px)}.hero h1{max-width:820px;margin:0 0 14px;font-size:clamp(36px,6vw,72px);line-height:.95}.hero p{max-width:720px;margin:0;color:var(--muted);font-size:18px;line-height:1.6}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));grid-gap:16px;gap:16px}.card{border:1px solid var(--line);border-radius:8px;padding:18px;background:var(--surface)}.card h2,.card h3{margin:0 0 10px}.ad-slot,.muted{color:var(--muted)}.ad-slot{border:1px dashed var(--line);background:var(--field);padding:18px;border-radius:8px;text-align:center;font-size:14px}.content-block{max-width:820px;line-height:1.7}