:root{
  --bg:#0f1420; --bg2:#151c2c; --card:#1a2336; --line:#2a3550;
  --text:#e8edf7; --muted:#9aa7c0; --brand:#f5a524; --brand2:#ff7a3d;
  --green:#34d399; --blue:#60a5fa; --purple:#a78bfa; --red:#f87171;
  --soft:rgba(245,165,36,.12); --max:980px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg);color:var(--text);font-size:16px;line-height:1.7}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}

/* header */
.site-head{background:linear-gradient(180deg,var(--bg2),var(--bg));border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:50;backdrop-filter:blur(8px)}
.head-in{max-width:var(--max);margin:0 auto;padding:12px 20px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.logo{font-weight:800;font-size:18px;color:var(--text);white-space:nowrap}
.logo:hover{text-decoration:none}
.logo .tower{color:var(--brand)}
nav.main{display:flex;gap:4px;flex-wrap:wrap}
nav.main a{color:var(--muted);font-size:14px;font-weight:600;padding:7px 11px;border-radius:8px}
nav.main a:hover,nav.main a.on{color:var(--text);background:var(--soft);text-decoration:none}
.burger{display:none;background:none;border:1px solid var(--line);color:var(--text);font-size:20px;
  border-radius:8px;padding:4px 12px;cursor:pointer}
@media(max-width:820px){
  .burger{display:block}
  nav.main{display:none;width:100%;flex-direction:column;padding-bottom:10px}
  nav.main.open{display:flex}
  .head-in{flex-wrap:wrap}
}

/* hero */
.hero{background:
  radial-gradient(600px 300px at 85% -10%,rgba(255,122,61,.25),transparent),
  radial-gradient(500px 260px at 10% 110%,rgba(96,165,250,.18),transparent),
  linear-gradient(180deg,#131b2e 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);padding:52px 20px 44px;text-align:center}
.hero .kicker{display:inline-block;background:var(--soft);color:var(--brand);border:1px solid rgba(245,165,36,.35);
  padding:4px 14px;border-radius:999px;font-size:13px;font-weight:700;margin-bottom:14px}
.hero h1{font-size:clamp(26px,5vw,40px);line-height:1.25;font-weight:800;max-width:760px;margin:0 auto}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero p{color:var(--muted);max-width:640px;margin:14px auto 0;font-size:16px}
.hero .cta{margin-top:22px;display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-block;padding:11px 22px;border-radius:10px;font-weight:700;font-size:15px;border:none;cursor:pointer}
.btn:hover{text-decoration:none;filter:brightness(1.1)}
.btn-p{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#1a1206}
.btn-s{background:transparent;border:1px solid var(--line);color:var(--text)}

/* layout */
.wrap{max-width:var(--max);margin:0 auto;padding:28px 20px 64px}
.page-head{margin-bottom:22px}
.page-head .crumbs{font-size:13px;color:var(--muted);margin-bottom:8px}
.page-head h1{font-size:clamp(24px,4vw,34px);line-height:1.3;font-weight:800}
.page-head .sub{color:var(--muted);margin-top:8px;font-size:15px}
.updated{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--muted);
  background:var(--card);border:1px solid var(--line);border-radius:999px;padding:4px 12px;margin-top:12px}

main h2{font-size:22px;margin:34px 0 12px;font-weight:800}
main h2:first-of-type{margin-top:4px}
main h3{font-size:17px;margin:22px 0 8px;font-weight:700;color:var(--brand)}
main p{margin:10px 0;color:#cdd6e6}
main ul,main ol{margin:10px 0 10px 22px;color:#cdd6e6}
main li{margin:6px 0}
strong{color:var(--text)}

/* cards & grids */
.grid{display:grid;gap:14px;margin:16px 0}
.grid.c2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid.c3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px}
.card h3{margin-top:0}
.card p{font-size:14.5px;color:var(--muted)}
.card .go{display:inline-block;margin-top:8px;font-size:14px;font-weight:700}

/* tables */
.tbl-wrap{overflow-x:auto;margin:14px 0;border:1px solid var(--line);border-radius:12px}
table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:520px}
th{background:var(--bg2);color:var(--muted);text-align:left;font-size:12.5px;text-transform:uppercase;letter-spacing:.04em}
th,td{padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:top}
tr:last-child td{border-bottom:none}

/* badges */
.tier{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;font-weight:800;font-size:15px}
.t-s{background:rgba(245,165,36,.18);color:var(--brand);border:1px solid rgba(245,165,36,.5)}
.t-a{background:rgba(52,211,153,.15);color:var(--green);border:1px solid rgba(52,211,153,.45)}
.t-b{background:rgba(96,165,250,.15);color:var(--blue);border:1px solid rgba(96,165,250,.45)}
.t-c{background:rgba(154,167,192,.12);color:var(--muted);border:1px solid rgba(154,167,192,.4)}
.pill{display:inline-block;padding:2px 12px;border-radius:999px;font-size:12.5px;font-weight:700}
.p-ok{background:rgba(52,211,153,.15);color:var(--green)}
.p-warn{background:rgba(245,165,36,.14);color:var(--brand)}
.p-off{background:rgba(248,113,113,.14);color:var(--red)}

/* callouts */
.note{border-left:4px solid var(--brand);background:var(--soft);border-radius:0 12px 12px 0;
  padding:14px 16px;margin:16px 0;font-size:14.5px}
.note.blue{border-left-color:var(--blue);background:rgba(96,165,250,.1)}
.note.green{border-left-color:var(--green);background:rgba(52,211,153,.09)}
.note.red{border-left-color:var(--red);background:rgba(248,113,113,.1)}
.note b{color:var(--text)}

/* code blocks */
.code-list{display:flex;flex-direction:column;gap:10px;margin:14px 0}
.code-item{display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--bg2);
  border:1px dashed var(--line);border-radius:12px;padding:12px 16px;flex-wrap:wrap}
.code-item code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:16px;font-weight:700;
  color:var(--brand);letter-spacing:.04em}
.copy{background:var(--soft);color:var(--brand);border:1px solid rgba(245,165,36,.4);border-radius:8px;
  padding:5px 12px;font-size:12.5px;font-weight:700;cursor:pointer}
.copy:hover{filter:brightness(1.15)}

/* FAQ */
details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin:10px 0}
details summary{cursor:pointer;font-weight:700;font-size:15.5px}
details p{margin:10px 0 2px}

/* footer */
.site-foot{border-top:1px solid var(--line);background:var(--bg2);padding:34px 20px 44px;margin-top:30px}
.foot-in{max-width:var(--max);margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px}
@media(max-width:720px){.foot-in{grid-template-columns:1fr}}
.foot-in h4{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:10px}
.foot-in a{display:block;color:#cdd6e6;font-size:14px;margin:6px 0}
.foot-in p{color:var(--muted);font-size:13.5px}
.copy-line{max-width:var(--max);margin:26px auto 0;padding-top:18px;border-top:1px solid var(--line);
  color:var(--muted);font-size:12.5px;text-align:center}

/* toc */
.toc{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin-bottom:24px}
.toc b{display:block;margin-bottom:8px;font-size:14px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
.toc ol{margin-left:20px;columns:2;column-gap:34px}
@media(max-width:640px){.toc ol{columns:1}}
.toc li{margin:4px 0;font-size:14.5px}

.stat-row{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0}
.stat{flex:1;min-width:150px;background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:14px;text-align:center}
.stat .n{font-size:20px;font-weight:800;color:var(--brand)}
.stat .l{font-size:12.5px;color:var(--muted)}