:root{--bg:#f7fbfc;--text:#102329;--muted:#6e858b;--line:#dce8eb;--brand:#11b9ae}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit}.shell{width:min(900px,calc(100% - 40px));margin-inline:auto}.topbar{position:sticky;top:0;z-index:10;background:rgba(247,251,252,.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.topbar-inner{height:72px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:900;letter-spacing:.1em}.brand img{border-radius:12px}.top-actions{display:flex;align-items:center;gap:16px}.back{font-size:12px;font-weight:800;color:#6e858b}.lang-switch{display:flex;padding:3px;border:1px solid var(--line);background:#fff;border-radius:999px}.lang-switch button{border:0;background:transparent;padding:6px 8px;border-radius:999px;font-size:10px;font-weight:900;color:#7b9095}.lang-switch button.is-active{background:#102329;color:#fff}.hero{padding:72px 0 56px}.kicker{margin:0 0 12px;text-transform:uppercase;letter-spacing:.12em;font-size:10px;font-weight:900;color:#168f89}.hero h1{font-size:clamp(44px,7vw,72px);line-height:.95;letter-spacing:-.06em;margin:0 0 20px;max-width:760px}.lead{max-width:680px;color:var(--muted);font-size:17px;line-height:1.65}.btn{display:inline-flex;margin-top:10px;padding:15px 18px;background:#102329;color:#fff;border-radius:14px;font-size:13px;font-weight:850}.guide{padding:0 0 84px;display:grid;gap:14px}.guide-block{background:#fff;border:1px solid var(--line);border-radius:24px;padding:28px 30px;box-shadow:0 12px 40px rgba(35,76,87,.045)}.guide-block h2{font-size:22px;letter-spacing:-.025em;margin:0 0 13px}.guide-block p,.guide-block li{font-size:14px;line-height:1.7;color:#5f767c}.guide-block p:last-child{margin-bottom:0}.guide-block ol,.guide-block ul{padding-left:22px;margin:8px 0 12px}.guide-block li{margin:5px 0}.guide-final{background:linear-gradient(135deg,#eafbf8,#edf6fb)}.install-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:16px 0}.install-mini{padding:16px;border:1px solid #dbe9eb;border-radius:16px;background:#f8fbfc;display:flex;flex-direction:column;gap:7px}.install-mini strong{font-size:13px}.install-mini span{font-size:12px;line-height:1.55;color:#71878d}footer{border-top:1px solid var(--line);padding:26px 0;background:#f0f6f7}.footer-inner{display:flex;justify-content:space-between;gap:20px;font-size:11px;color:#80959a}.footer-inner nav{display:flex;gap:18px;flex-wrap:wrap}@media(max-width:640px){.shell{width:calc(100% - 28px)}.topbar-inner{height:64px}.brand{font-size:12px}.brand img{width:32px;height:32px}.back{display:none}.top-actions{gap:8px}.hero{padding:46px 0 38px}.hero h1{font-size:42px}.lead{font-size:15px}.guide{gap:10px;padding-bottom:58px}.guide-block{padding:21px 19px;border-radius:20px}.guide-block h2{font-size:19px}.guide-block p,.guide-block li{font-size:13.5px;line-height:1.62}.install-grid{grid-template-columns:1fr}.footer-inner{flex-direction:column;gap:12px}.footer-inner nav{gap:12px 16px}}