*{box-sizing:border-box}body{margin:0;background:#f0f5f7;color:#172737;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65}main{max-width:1160px;margin:auto;padding:40px 28px}header{display:flex;align-items:center;gap:16px;font-size:22px;border-bottom:1px solid #c8d5dd;padding-bottom:24px}header img{width:64px;height:64px;border-radius:14px}h1{font-size:clamp(34px,6vw,64px);line-height:1.08;font-weight:600;letter-spacing:-1.6px;margin:42px 0 22px}h2{font-size:26px;line-height:1.3;margin:32px 0 16px}p,li{max-width:790px}.intro{font-size:22px;max-width:800px}.screen{width:100%;height:auto;display:block;border:1px solid #c8d5dd;margin:32px 0}.two{display:grid;grid-template-columns:1fr 1fr;gap:36px;border-top:1px solid #c8d5dd;margin-top:36px;padding-top:10px}a{color:#074b99;text-underline-offset:4px}nav{display:flex;flex-wrap:wrap;gap:24px;border-top:1px solid #c8d5dd;padding-top:24px;margin-top:44px;font-size:15px}pre{overflow:auto;padding:20px;background:white;border-left:3px solid #ac4904;font-size:13px}small{color:#516273}article{max-width:860px} @media(max-width:720px){main{padding:24px 20px}.two{grid-template-columns:1fr;gap:0}.intro{font-size:19px}}