:root{--blue:#166ca2;--green:#16a085;--ink:#16303e;--muted:#647985;--line:#dce7ec;--bg:#f4f8fa;--surface:#fff;font-family:Inter,"Segoe UI",Roboto,system-ui,sans-serif;color:#16303e}
*{box-sizing:border-box}body{margin:0;background:var(--bg);line-height:1.7}.top{background:linear-gradient(135deg,#0e5f98,#1689a7 55%,#21a67a);color:#fff;padding:22px}.brand{width:min(760px,100%);margin:auto;display:flex;align-items:center;gap:12px;font-weight:850;font-size:19px}.brand img{width:42px;height:42px;border-radius:12px}.wrap{width:min(760px,calc(100% - 28px));margin:28px auto;background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:clamp(22px,6vw,48px);box-shadow:0 10px 32px rgba(14,67,91,.08)}h1{font-size:clamp(29px,7vw,44px);line-height:1.1;letter-spacing:-.04em;margin:0 0 12px}h2{font-size:20px;margin-top:28px}.lead{color:var(--muted);font-size:17px}.notice{padding:13px 15px;border-left:4px solid var(--blue);background:#edf6fa;border-radius:8px}.steps{counter-reset:step;display:grid;gap:12px;padding:0}.steps li{list-style:none;display:flex;gap:12px;align-items:flex-start}.steps li:before{counter-increment:step;content:counter(step);width:29px;height:29px;flex:none;display:grid;place-items:center;border-radius:50%;background:var(--blue);color:#fff;font-weight:800}.button{display:inline-block;background:linear-gradient(135deg,var(--blue),var(--green));color:#fff;text-decoration:none;border-radius:999px;padding:11px 19px;font-weight:800}.muted{color:var(--muted)}footer{text-align:center;color:var(--muted);padding:0 20px 30px;font-size:13px}@media(prefers-color-scheme:dark){:root{--ink:#e9f2f5;--muted:#9eb1bb;--line:#29404a;--bg:#0c171d;--surface:#132229;color-scheme:dark}.notice{background:#18323e}}