:root{--bg:#0e1621;--panel:#152232;--line:#24384f;--text:#dbe6f2;--muted:#8aa0b8;--accent:#f2a93b;--accent2:#4fc3a1}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{background:var(--bg);color:var(--text);font:16px/1.6 "Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
background-size:48px 48px;background-attachment:fixed}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:980px;margin:0 auto;padding:0 20px}
header{background:rgba(14,22,33,.94);border-bottom:1px solid var(--line)}
header .wrap{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;padding-top:14px;padding-bottom:14px}
.logo{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;letter-spacing:.12em}
.logo img{width:30px;height:30px}
nav a{color:var(--muted);margin-left:18px;font-size:15px}
nav a:hover,nav a.on{color:var(--text)}
main{background:rgba(14,22,33,.9);min-height:70vh;padding:40px 0 56px}
h1{font-size:34px;line-height:1.25;margin:0 0 14px}
h2{font-size:22px;margin:36px 0 12px;color:var(--accent)}
h3{font-size:17px;margin:0 0 6px}
.lead{font-size:18px;color:var(--muted);max-width:720px}
.tag{display:inline-block;font:12px/1 Consolas,"Courier New",monospace;color:var(--accent2);border:1px solid var(--accent2);padding:5px 8px;border-radius:3px;margin-bottom:18px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin-top:18px}
.card{background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--accent);padding:18px 20px;border-radius:4px}
.card p{margin:0;color:var(--muted);font-size:15px}
.steps{counter-reset:s;list-style:none;padding:0}
.steps li{counter-increment:s;position:relative;padding:10px 0 10px 46px;border-bottom:1px dashed var(--line)}
.steps li::before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:10px;font:600 15px Consolas,monospace;color:var(--accent)}
table{width:100%;border-collapse:collapse;margin-top:12px;font-size:15px}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line)}
th{color:var(--muted);font-weight:600}
.mono{font-family:Consolas,"Courier New",monospace}
footer{border-top:1px solid var(--line);background:var(--bg);color:var(--muted);font-size:14px;padding:20px 0}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.big404{font:700 96px/1 Consolas,monospace;color:var(--accent);margin:10px 0}
@media (max-width:600px){h1{font-size:26px}nav a{margin:0 14px 0 0}}