:root{--ink:#1b2430;--muted:#5d6b7a;--line:#dfe5ec;--bg:#f6f8fa;--brand:#0b5c8a;--brand-d:#084466;--ok:#1d7a46;--warn:#9a6700;--err:#b3261e}
*{box-sizing:border-box}
body{margin:0;font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--brand)}
header.top{background:#fff;border-bottom:1px solid var(--line)}
header.top .in,main,footer .in{max-width:1040px;margin:0 auto;padding:0 20px}
header.top .in{display:flex;align-items:center;gap:18px;height:58px}
header.top .logo{font-weight:700;color:var(--ink);text-decoration:none;font-size:18px}
header.top nav{margin-left:auto;display:flex;gap:16px;align-items:center;font-size:15px}
main{padding-top:28px;padding-bottom:60px}
h1{font-size:28px;line-height:1.2;margin:0 0 12px}
h2{font-size:20px;margin:28px 0 10px}
h3{font-size:16px;margin:18px 0 6px}
.lead{font-size:18px;color:var(--muted);max-width:720px}
.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px 20px;margin:14px 0}
.grid{display:grid;gap:14px}
.g3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.g2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.btn{display:inline-block;background:var(--brand);color:#fff;border:0;border-radius:8px;padding:10px 16px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none}
.btn:hover{background:var(--brand-d)}
.btn.sec{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.btn.danger{background:#fff;color:var(--err);border:1px solid var(--err)}
.btn.small{padding:6px 10px;font-size:14px}
.btn[disabled]{opacity:.45;cursor:not-allowed}
form.inline{display:inline}
label{display:block;font-weight:600;margin:14px 0 4px}
label.chk{font-weight:400;display:flex;gap:8px;align-items:flex-start;margin:8px 0}
label.chk input{margin-top:5px}
.hint{color:var(--muted);font-size:14px;font-weight:400}
input[type=text],input[type=email],input[type=number],select,textarea{width:100%;padding:9px 11px;border:1px solid #c3ccd6;border-radius:8px;font:inherit;background:#fff}
textarea{min-height:110px}
textarea.big{min-height:420px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:14px}
table{width:100%;border-collapse:collapse;font-size:15px}
th,td{text-align:left;padding:9px 8px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:13px;color:var(--muted);font-weight:600}
.tag{display:inline-block;padding:2px 8px;border-radius:999px;font-size:13px;background:#e8eef4;color:#33485c;white-space:nowrap}
.tag.ok{background:#e1f3e8;color:var(--ok)}.tag.warn{background:#fff3d6;color:var(--warn)}.tag.err{background:#fde7e5;color:var(--err)}
.flash{padding:11px 14px;border-radius:8px;margin:0 0 12px;background:#e1f3e8;color:#14532d;word-break:break-word}
.flash.err{background:#fde7e5;color:#7f1d1d}.flash.warn{background:#fff3d6;color:#6b4a00}
.score{font-weight:700;color:var(--brand)}
.muted{color:var(--muted)}
ul.clean{margin:6px 0;padding-left:20px}
pre.doc{white-space:pre-wrap;background:#fbfcfd;border:1px solid var(--line);border-radius:8px;padding:14px;font:14px/1.5 ui-monospace,Menlo,Consolas,monospace;max-height:420px;overflow:auto}
footer{border-top:1px solid var(--line);background:#fff;font-size:14px;color:var(--muted)}
footer .in{padding-top:16px;padding-bottom:16px}
.hero{padding:26px 0 8px}
.steps{counter-reset:s}.steps .card h3:before{counter-increment:s;content:counter(s) ". "}