:root{
  --bg:#ffffff; --bg-soft:#f4f8ff; --fg:#0f172a; --muted:#5b6472;
  --line:#e5e9f0; --card:#f8fafc; --card-hi:#ffffff;
  --blue:#2563EB; --blue-d:#1d4ed8; --f:#38BDF8;
  --ok:#16a34a; --warn:#d97706; --bad:#dc2626;
  --radius:14px; --radius-sm:10px; --maxw:1120px;
  --shadow:0 1px 2px rgba(15,23,42,.04),0 8px 24px rgba(15,23,42,.06);
  --shadow-hi:0 10px 40px rgba(30,95,214,.15);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);line-height:1.65;font-size:17px}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
img,svg{max-width:100%}
h1,h2,h3,h4{line-height:1.15;margin:0 0 .5em;letter-spacing:-.02em}
h1{font-size:clamp(2.1rem,4.5vw,3.1rem)}
h2{font-size:clamp(1.6rem,3vw,2.1rem)}
h3{font-size:1.18rem}
p{margin:0 0 1em}
main{max-width:var(--maxw);margin:0 auto;padding:48px 20px}

/* brand */
.brand{font-weight:800;font-size:1.32rem;letter-spacing:-.03em;display:inline-flex;align-items:center;gap:8px}
.brand:hover{text-decoration:none}
.brand.small{font-size:1.12rem}
.brand .mark{width:26px;height:26px;flex:0 0 auto}
.pf-p{color:var(--fg)} .pf-f{color:var(--f)}

/* header */
header.site{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line)}
header.site .nav-wrap{max-width:var(--maxw);margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:14px 20px}
header nav{display:flex;gap:6px;align-items:center}
header nav a{color:var(--muted);padding:8px 12px;border-radius:999px;font-weight:500;font-size:.98rem}
header nav a:hover{color:var(--fg);background:var(--bg-soft);text-decoration:none}
header nav a.btn{color:#fff;margin-left:6px}
header nav a.btn:hover{color:#fff}
.nav-toggle{display:none}
.nav-burger{display:none;cursor:pointer;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;position:relative;background:#fff}
.nav-burger span{position:absolute;left:11px;right:11px;height:2px;background:var(--fg);border-radius:2px;transition:.2s}
.nav-burger span:nth-child(1){top:14px}
.nav-burger span:nth-child(2){top:20px}
.nav-burger span:nth-child(3){top:26px}

/* buttons */
.btn{display:inline-block;background:var(--blue);color:#fff!important;padding:10px 18px;border-radius:999px;font-weight:600;border:0;cursor:pointer;font-size:.98rem;transition:background .15s,transform .15s,box-shadow .15s}
.btn:hover{background:var(--blue-d);text-decoration:none;transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--blue)!important;border:1.5px solid var(--blue)}
.btn.ghost:hover{background:var(--bg-soft);border-color:var(--blue-d)}
.btn.lg{padding:14px 28px;font-size:1.06rem}

/* hero */
.hero{text-align:center;padding:84px 20px 48px;position:relative}
.hero:before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(1000px 420px at 50% -60px,rgba(90,162,255,.16),transparent 70%)}
.hero p.lead{font-size:clamp(1.1rem,2vw,1.3rem);color:var(--muted);max-width:720px;margin:0 auto 28px}
.eyebrow{display:inline-block;background:#e8efff;color:var(--blue);font-size:.8rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;padding:5px 14px;border-radius:999px;margin-bottom:18px}
.cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.trust{color:var(--muted);margin-top:20px;font-size:.95rem}

/* sections */
.grid{display:grid;gap:22px}
.grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:transform .18s,box-shadow .18s,border-color .18s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#d3ddf0}
.card h3{margin-top:0}
.card p{margin-bottom:0;color:var(--muted)}
.card code{background:#eef2f9;color:#0f172a;padding:1px 6px;border-radius:5px;font-size:.9em}
.section{padding:56px 0;border-top:1px solid var(--line)}
.section>h2{text-align:center;margin-bottom:12px}
.section .section-lead{text-align:center;color:var(--muted);max-width:640px;margin:0 auto 36px;font-size:1.08rem}

/* pricing */
.plans{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;align-items:stretch}
.plan{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;display:flex;flex-direction:column}
.plan.hi{border-color:var(--blue);box-shadow:var(--shadow-hi);background:var(--card-hi)}
.plan .price{font-size:2.1rem;font-weight:800;margin:.2em 0;letter-spacing:-.03em}
.plan .per{color:var(--muted);font-size:.95rem}
.plan ul{list-style:none;padding:0;margin:18px 0;flex:1}
.plan li{padding:7px 0 7px 26px;position:relative;color:var(--fg)}
.plan li:before{content:"✓";color:var(--ok);position:absolute;left:0;font-weight:800}
.tag{display:inline-block;background:#e8efff;color:var(--blue);font-size:.78rem;font-weight:700;padding:4px 11px;border-radius:999px;margin-bottom:10px;align-self:flex-start}
.plan.hi .tag{background:var(--blue);color:#fff}

/* tables */
.table-wrap{overflow-x:auto}
table.cmp{width:100%;border-collapse:collapse;margin:10px 0;min-width:420px}
table.cmp th,table.cmp td{border:1px solid var(--line);padding:12px 14px;text-align:left}
table.cmp th{background:var(--card);font-weight:700}
table.cmp tr:nth-child(even) td{background:#fcfdff}
table.cmp td.y{color:var(--ok);font-weight:700}
table.cmp td.n{color:var(--muted)}

/* docs / panels */
.panel{max-width:860px;margin:0 auto}
.muted{color:var(--muted)}
.docs h3{margin-top:30px}
.docs h3:first-child{margin-top:0}
code,pre{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
pre{background:#0f172a;color:#e2e8f0;padding:18px;border-radius:12px;overflow:auto;font-size:.95rem;line-height:1.5}

/* footer */
footer.site{border-top:1px solid var(--line);margin-top:56px;background:var(--bg-soft)}
footer.site .cols{max-width:var(--maxw);margin:0 auto;padding:48px 20px 8px;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}
footer .cols>div:first-child p{color:var(--muted);max-width:280px}
footer h4{margin:0 0 10px;font-size:.95rem}
footer a{display:block;color:var(--muted);padding:3px 0}
footer a:hover{color:var(--blue)}
footer .legal{max-width:var(--maxw);margin:0 auto;color:var(--muted);font-size:.9rem;padding:20px;border-top:1px solid var(--line)}
footer .legal a{display:inline;color:var(--blue)}

/* 404 */
.notfound{text-align:center;padding:90px 20px}
.notfound .code{font-size:5rem;font-weight:800;color:var(--f);letter-spacing:-.04em;line-height:1}

@media(max-width:820px){
  body{font-size:16px}
  main{padding:36px 16px}
  .hero{padding:56px 16px 36px}
  .grid.c3,.grid.c2,.plans,footer.site .cols{grid-template-columns:1fr}
  .nav-burger{display:block}
  header nav{position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:2px;background:#fff;border-bottom:1px solid var(--line);padding:10px 16px 16px;box-shadow:var(--shadow);display:none}
  header nav a{padding:12px 14px;border-radius:10px}
  header nav a.btn{margin:6px 0 0;text-align:center}
  .nav-toggle:checked ~ nav{display:flex}
}