:root{
  --bg:#000000;
  --bg-2:#0a0f0c;
  --card:#0e1512;
  --line:rgba(126,240,193,.14);
  --text:#e9f2ed;
  --muted:#9aa8a2;
  --mint:#7EF0C1;
  --mint-dim:#4fc79c;
  --radius:20px;
  --maxw:760px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--mint);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}

/* ambient glow like the app */
.glow{position:fixed;inset:0;pointer-events:none;z-index:0;
  background:radial-gradient(60% 40% at 50% -10%, rgba(126,240,193,.16), transparent 70%);}
.content{position:relative;z-index:1}

header.nav{padding:22px 0;border-bottom:1px solid var(--line);position:sticky;top:0;
  background:rgba(0,0,0,.72);backdrop-filter:blur(14px);z-index:5}
.nav .wrap{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.01em;font-size:18px;color:var(--text)}
.brand:hover{text-decoration:none}
.brand .mark{width:30px;height:30px;border-radius:9px;flex:none}
.nav nav{margin-left:auto;display:flex;gap:18px;font-size:14px}
.nav nav a{color:var(--muted)}
.nav nav a:hover,.nav nav a[aria-current]{color:var(--mint)}

.hero{padding:84px 0 64px;text-align:center}
.hero .mark{width:104px;height:104px;border-radius:26px;margin-bottom:26px}
h1{font-size:clamp(32px,6vw,50px);line-height:1.12;letter-spacing:-.03em;margin:0 0 16px;font-weight:700}
h1 em{font-style:italic;font-weight:400;color:var(--muted);font-family:Georgia,"Times New Roman",serif}
h1 b{color:var(--mint);font-weight:700}
.lede{color:var(--muted);font-size:18px;max-width:52ch;margin:0 auto 30px}
.btn{display:inline-block;background:var(--mint);color:#04120c;font-weight:650;
  padding:14px 30px;border-radius:999px;font-size:16px}
.btn:hover{text-decoration:none;background:#96f5d0}
.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn.ghost:hover{background:rgba(126,240,193,.07)}
.btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

.features{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));padding:8px 0 72px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.card h3{margin:0 0 6px;font-size:16px}
.card p{margin:0;color:var(--muted);font-size:14.5px}

.doc{padding:52px 0 90px}
.doc h1{font-size:clamp(28px,5vw,38px);text-align:left;margin-bottom:8px}
.updated{color:var(--muted);font-size:14px;margin:0 0 34px}
.doc h2{font-size:19px;margin:38px 0 10px;letter-spacing:-.01em}
.doc h3{font-size:16px;margin:24px 0 6px;color:var(--mint-dim)}
.doc p,.doc li{color:#c9d5cf}
.doc ul{padding-left:20px}
.doc li{margin:6px 0}
.note{background:var(--card);border:1px solid var(--line);border-left:3px solid var(--mint);
  border-radius:12px;padding:16px 18px;margin:22px 0}
.note p{margin:0}
table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14.5px}
th,td{text-align:left;padding:11px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--mint-dim);font-weight:600}
td{color:#c9d5cf}
.steps{counter-reset:s;list-style:none;padding:0}
.steps li{counter-increment:s;position:relative;padding-left:42px;margin:16px 0}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:28px;height:28px;
  border-radius:50%;background:rgba(126,240,193,.13);color:var(--mint);
  display:grid;place-items:center;font-size:14px;font-weight:600}

footer{border-top:1px solid var(--line);padding:34px 0 46px;color:var(--muted);font-size:14px}
footer .wrap{display:flex;gap:18px;flex-wrap:wrap;align-items:center}
footer nav{display:flex;gap:18px;flex-wrap:wrap;margin-left:auto}

@media (max-width:560px){
  .hero{padding:60px 0 48px}
  .nav nav{width:100%;margin-left:0;gap:14px}
}