:root{--navy:#0b1f3a;--navy2:#102b4e;--orange:#ffb000;--bg:#f4f7fa;--ink:#142033;--muted:#5d6b7c;--line:#dce3ea}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 system-ui,-apple-system,"Segoe UI",sans-serif}.top{background:var(--navy);color:#fff}.nav{max-width:1020px;margin:auto;padding:18px 22px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{color:#fff;text-decoration:none;font-weight:900}.nav a:not(.brand){color:#dce7f4}.wrap{max-width:1020px;margin:42px auto;padding:0 22px;display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:28px}.article,.side{background:#fff;border:1px solid var(--line);border-radius:15px;padding:clamp(24px,4vw,42px)}h1,h2,h3{color:var(--navy);line-height:1.2}h1{font-size:clamp(32px,5vw,48px);margin:0 0 14px}h2{font-size:27px;margin-top:36px}h3{font-size:20px}.lead{font-size:19px;color:var(--muted)}.button{display:inline-block;background:var(--orange);color:#251900;text-decoration:none;font-weight:850;padding:13px 19px;border-radius:9px;margin:12px 0}.note{border-left:4px solid var(--orange);background:#fff8e6;padding:14px 17px;margin:24px 0}.steps li{margin-bottom:9px}.side{align-self:start;padding:22px;position:sticky;top:20px}.side h2{font-size:19px;margin:0 0 12px}.side a{display:block;color:var(--navy);padding:8px 0;border-bottom:1px solid var(--line)}footer{background:#071629;color:#b7c4d3;padding:28px 22px;text-align:center;font-size:14px}footer a{color:#fff}@media(max-width:780px){.wrap{grid-template-columns:1fr;margin-top:24px}.side{position:static}.nav{align-items:flex-start;flex-direction:column}}