:root{--ink:#172033;--muted:#526078;--paper:#f7f9fc;--card:#fff;--line:#dce3ef;--brand:#174c83;--accent:#0c8b79;--light:#e8f5f1;--max:1120px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);line-height:1.65}.wrap{width:min(calc(100% - 2rem),var(--max));margin:auto}.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}.bar{display:flex;gap:1rem;align-items:center;justify-content:space-between;min-height:4rem}.brand{font-weight:800;color:var(--ink);font-size:1.15rem;text-decoration:none}.nav{display:flex;gap:1rem;flex-wrap:wrap}.nav a,.footer-links a{color:var(--muted);text-decoration:none;font-size:.92rem}.nav a:hover,.footer-links a:hover{color:var(--brand);text-decoration:underline}.hero{padding:5rem 0 3.5rem;background:linear-gradient(135deg,#eef5fc,#effaf7)}.hero-grid,.split{display:grid;grid-template-columns:1.15fr .85fr;gap:2.5rem;align-items:center}.eyebrow{font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;color:var(--brand);font-weight:800}h1,h2,h3{line-height:1.15;margin:0 0 1rem}h1{font-size:clamp(2rem,5vw,3.8rem);letter-spacing:-.04em}h2{font-size:clamp(1.45rem,3vw,2.2rem);margin-top:0}h3{font-size:1.08rem}p{margin:0 0 1rem}.lead{font-size:1.15rem;color:var(--muted);max-width:62ch}.actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.5rem}.button{display:inline-block;background:var(--brand);color:white;text-decoration:none;border:2px solid var(--brand);padding:.68rem 1rem;border-radius:.45rem;font-weight:750}.button:hover{background:#103a66;border-color:#103a66}.button.alt{background:transparent;color:var(--brand)}.product-image{width:100%;height:auto;max-width:430px;margin:auto;display:block;border-radius:.75rem;box-shadow:0 18px 45px #15304a26}main section{padding:3.5rem 0}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}.card{background:var(--card);padding:1.25rem;border:1px solid var(--line);border-radius:.7rem}.feature{border-left:4px solid var(--accent)}.callout{background:var(--light);padding:1.2rem 1.35rem;border-radius:.7rem}.article{width:min(calc(100% - 2rem),780px);margin:0 auto;padding:3.5rem 0}.article h2{margin-top:2.2rem}.article h3{margin-top:1.5rem}.article li{margin-bottom:.45rem}.crumbs{font-size:.9rem;color:var(--muted);margin-bottom:1.5rem}.crumbs a{color:inherit}.notice{font-size:.94rem;color:var(--muted);border-top:1px solid var(--line);padding-top:1rem}.checklist{counter-reset:item;padding:0;list-style:none}.checklist li{counter-increment:item;background:#fff;border:1px solid var(--line);padding:1rem 1rem 1rem 3.4rem;border-radius:.55rem;margin:.7rem 0;position:relative}.checklist li:before{content:counter(item);position:absolute;left:1rem;top:1rem;width:1.6rem;height:1.6rem;border-radius:50%;display:grid;place-items:center;background:var(--brand);color:#fff;font-size:.85rem;font-weight:700}.site-footer{background:#172033;color:#fff;padding:2.2rem 0;margin-top:2rem}.footer-grid{display:flex;justify-content:space-between;gap:2rem;align-items:flex-start}.footer-links{display:flex;gap:1rem;flex-wrap:wrap}.footer-links a{color:#dce6f5}.small{font-size:.9rem;color:var(--muted)}.price{font-size:1.45rem;font-weight:800;color:var(--brand)}@media(max-width:720px){.bar{align-items:flex-start;padding:.8rem 0;flex-direction:column}.nav{gap:.7rem}.hero{padding:3.5rem 0 2.5rem}.hero-grid,.split,.card-grid{grid-template-columns:1fr}.product-image{max-width:330px}.footer-grid{flex-direction:column}.article{padding:2.5rem 0}}@media print{.site-header,.site-footer,.actions,.no-print{display:none!important}body{background:#fff}.article{width:100%;padding:0}.checklist li{break-inside:avoid}}