:root{
  --bg:#0b1220; --panel:#0f172a; --card:#111c33; --line:#1e2b45;
  --text:#e7ecf5; --muted:#9fb0cc; --accent:#5b8cff; --accent2:#36d399;
  --code:#0a1020; --radius:14px; --maxw:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  line-height:1.65;-webkit-font-smoothing:antialiased}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .5em}
h1{font-size:clamp(1.9rem,4vw,2.8rem);letter-spacing:-.02em}
h2{font-size:clamp(1.4rem,2.6vw,2rem);letter-spacing:-.01em;margin-top:1.6em}
p{margin:0 0 1em}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em}
.muted{color:var(--muted)}
/* header */
.site-header{position:sticky;top:0;z-index:20;background:rgba(11,18,32,.85);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{font-weight:800;font-size:1.15rem;color:var(--text)}
.brand span{color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{color:var(--muted);font-weight:600;font-size:.95rem}
.nav-links a:hover{color:var(--text);text-decoration:none}
/* buttons */
.btn{display:inline-block;background:var(--accent);color:#fff;font-weight:700;
  padding:12px 20px;border-radius:10px;border:0;cursor:pointer;font-size:1rem}
.btn:hover{filter:brightness(1.08);text-decoration:none}
.btn-sm{padding:8px 14px;font-size:.9rem}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--text)}
.btn-green{background:var(--accent2);color:#04241a}
/* hero */
.hero{padding:72px 0 40px;text-align:center;
  background:radial-gradient(900px 380px at 50% -10%,rgba(91,140,255,.18),transparent)}
.hero p.lead{font-size:1.2rem;color:var(--muted);max-width:680px;margin:0 auto 1.6em}
.hero .btn{margin:6px}
.pill{display:inline-block;font-size:.8rem;font-weight:700;color:var(--accent2);
  border:1px solid var(--line);border-radius:999px;padding:5px 14px;margin-bottom:18px}
/* grid + cards */
.grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));margin:24px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;display:flex;flex-direction:column}
.card h3{margin-bottom:.35em}
.card .tag{font-size:.74rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;
  color:var(--accent);margin-bottom:8px}
.card p{color:var(--muted);flex:1}
.card .links{display:flex;gap:14px;margin-top:12px;font-weight:600;font-size:.92rem}
/* sections */
section{padding:18px 0}
.section-head{text-align:center;max-width:640px;margin:0 auto 8px}
.section-head p{color:var(--muted)}
/* content article */
.article{max-width:820px;margin:0 auto;padding:32px 20px 8px}
.article h1{margin-bottom:.2em}
.article .sub{font-size:1.15rem;color:var(--muted);margin-bottom:1.4em}
.crumbs{font-size:.85rem;color:var(--muted);margin-bottom:14px}
.crumbs a{color:var(--muted)}
/* tables */
table{width:100%;border-collapse:collapse;margin:14px 0;font-size:.95rem}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--muted);font-weight:700;font-size:.85rem;text-transform:uppercase;letter-spacing:.04em}
.method{font-weight:700;color:var(--accent2);font-family:ui-monospace,monospace;font-size:.85rem}
/* code */
pre{background:var(--code);border:1px solid var(--line);border-radius:12px;padding:16px;
  overflow:auto;font-size:.88rem;line-height:1.5}
pre code{color:#cfe0ff}
.codewrap{margin:14px 0}
.codewrap .lbl{font-size:.78rem;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:6px}
/* pricing */
.price-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:16px 0}
.price-cell{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;text-align:center}
.price-cell .pname{font-weight:700;color:var(--muted);font-size:.85rem;text-transform:uppercase;letter-spacing:.05em}
.price-cell .pprice{font-size:1.5rem;font-weight:800;margin:6px 0}
.price-cell .pquota{font-size:.85rem;color:var(--muted)}
/* tool widget */
.tool{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin:18px 0}
.tool .row{display:flex;gap:10px;flex-wrap:wrap}
.tool input,.tool select{flex:1;min-width:140px;background:var(--code);border:1px solid var(--line);
  color:var(--text);border-radius:10px;padding:12px 14px;font-size:1rem}
.tool .out{margin-top:16px;display:none}
.tool .out.show{display:block}
.tool .out pre{margin:0}
.badge{display:inline-block;font-size:.78rem;font-weight:700;padding:3px 9px;border-radius:6px;margin-right:6px}
.badge.ok{background:rgba(54,211,153,.15);color:var(--accent2)}
.badge.bad{background:rgba(248,114,114,.15);color:#f87272}
.cta{background:linear-gradient(120deg,rgba(91,140,255,.14),rgba(54,211,153,.10));
  border:1px solid var(--line);border-radius:var(--radius);padding:26px;text-align:center;margin:30px 0}
.faq h3{font-size:1.05rem;margin-top:1.2em}
.faq p{color:var(--muted)}
/* footer */
.site-footer{border-top:1px solid var(--line);margin-top:56px;padding:40px 0 24px;background:var(--panel)}
.footer-grid{display:grid;gap:26px;grid-template-columns:1.6fr 1fr 1fr}
.footer-grid h4{font-size:.85rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}
.footer-grid ul{list-style:none;padding:0;margin:0}
.footer-grid li{margin:6px 0}
.footer-grid a{color:var(--muted)}
.brand-foot{font-size:1.05rem;margin-bottom:8px}
.foot-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;
  margin-top:26px;padding-top:18px;border-top:1px solid var(--line);font-size:.85rem}
@media(max-width:760px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .price-row{grid-template-columns:repeat(2,1fr)}
  .hide-sm{display:none}
  .nav-links{gap:14px}
}