:root{
  --bg:#0b0d10;--surface:#111419;--surface-2:#161a21;--line:#222833;--line-strong:#2e3542;
  --text:#e6e9ee;--muted:#9aa3b2;--faint:#6b7483;--accent:#7dd3fc;--accent-ink:#06222e;
  --accent-dim:rgba(125,211,252,.12);--radius:10px;
  --sans:Inter,"Segoe UI Variable Text","Segoe UI",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,"SF Mono","Cascadia Mono","Segoe UI Mono",Menlo,Consolas,monospace;
  color-scheme:dark
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 var(--sans);-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-underline-offset:3px}
a:focus-visible,.btn:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
code,.mono{font-family:var(--mono);font-size:.9em}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:16px;background:var(--surface);padding:8px 12px;z-index:9}

/* nav */
.nav{position:sticky;top:0;z-index:5;background:rgba(11,13,16,.85);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:12px;height:60px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;font-weight:600;letter-spacing:.01em}
.mark{width:26px;height:26px;border-radius:7px;border:1px solid var(--line-strong);background:var(--surface-2);display:grid;place-items:center}
.mark svg{width:14px;height:14px}
.nav nav{margin-left:auto;display:flex;gap:22px}
.nav nav a{color:var(--muted);text-decoration:none;font-size:14px}
.nav nav a:hover{color:var(--text)}

.label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.14em;color:var(--faint);margin:0 0 14px}
.pill{display:inline-flex;align-items:center;gap:8px;font:12px var(--mono);color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:4px 11px}
.pill i{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px var(--accent-dim)}

/* hero */
.hero{padding:88px 0 72px;border-bottom:1px solid var(--line);background:
  radial-gradient(600px 300px at 80% 20%,rgba(125,211,252,.06),transparent 70%);background-blend-mode:normal}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
h1{font-size:clamp(34px,5vw,54px);line-height:1.08;letter-spacing:-.02em;margin:18px 0 6px;font-weight:650}
.sub{color:var(--faint);font:14px var(--mono);margin:0 0 20px}
.lead{color:var(--muted);font-size:18px;max-width:34ch;margin:0 0 30px}
.ctas{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.btn{display:inline-flex;align-items:center;gap:9px;padding:12px 18px;border-radius:var(--radius);font-weight:600;font-size:15px;text-decoration:none;border:1px solid var(--line-strong);color:var(--text);background:var(--surface);transition:background .16s,border-color .16s}
.btn:hover{background:var(--surface-2);border-color:#3d4656}
.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn.primary:hover{background:#a5e1fd}
.btn svg{width:16px;height:16px}
.note{font-size:13px;color:var(--faint);margin:14px 0 0}
.note b{color:var(--muted);font-weight:500}
.unofficial{margin-top:22px;font-size:13px;color:var(--muted);border:1px solid var(--line);border-radius:8px;padding:9px 12px;display:inline-block;background:var(--surface)}

.shots{position:relative;display:flex;justify-content:center;gap:16px}
.shot{margin:0;border:1px solid var(--line-strong);border-radius:14px;overflow:hidden;background:var(--bg);box-shadow:0 30px 80px -30px rgba(0,0,0,.8)}
.shot img{display:block;width:100%;height:auto}
.shots .a{width:62%;z-index:2}
.shots .b{width:52%;margin-top:64px;opacity:.9}

section{padding:84px 0;border-bottom:1px solid var(--line)}
h2{font-size:clamp(24px,3vw,32px);letter-spacing:-.01em;margin:0 0 12px;font-weight:620}
.intro{color:var(--muted);max-width:56ch;margin:0 0 40px}

.grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.feat{padding:26px 22px;border-right:1px solid var(--line);background:var(--surface)}
.feat:last-child{border-right:0}
.feat .ic{width:32px;height:32px;border:1px solid var(--line-strong);border-radius:8px;display:grid;place-items:center;margin-bottom:18px}
.feat .ic svg{width:16px;height:16px}
.feat h3{font-size:16px;margin:0 0 6px;font-weight:600}
.feat p{margin:0;color:var(--muted);font-size:14.5px}

.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);gap:16px;counter-reset:s}
.steps li{border:1px solid var(--line);border-radius:var(--radius);padding:22px;background:var(--surface);counter-increment:s}
.steps li::before{content:"0" counter(s);font:12px var(--mono);color:var(--accent);display:block;margin-bottom:14px}
.steps h3{margin:0 0 6px;font-size:16px}
.steps p{margin:0;color:var(--muted);font-size:14.5px}

.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.tree{margin:0;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);overflow:hidden}
.tree .bar{display:flex;gap:6px;padding:10px 14px;border-bottom:1px solid var(--line);font:12px var(--mono);color:var(--faint)}
.tree pre{margin:0;padding:18px 18px 20px;font:13.5px/1.75 var(--mono);color:var(--muted);overflow-x:auto}
.tree .d{color:var(--text)}.tree .k{color:var(--accent)}.tree .c{color:var(--faint)}
.list{margin:0;padding:0;list-style:none}
.list li{padding:12px 0;border-bottom:1px solid var(--line);color:var(--muted);font-size:15px}
.list li:last-child{border-bottom:0}
.list b{color:var(--text);font-weight:600}

.privacy{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.privacy div{border:1px solid var(--line);border-radius:var(--radius);padding:22px;background:var(--surface)}
.privacy h3{margin:0 0 6px;font-size:16px}
.privacy p{margin:0;color:var(--muted);font-size:14.5px}

.faq{max-width:760px}
.faq details{border-bottom:1px solid var(--line)}
.faq details:first-of-type{border-top:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;padding:18px 0;font-weight:600;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);color:var(--faint)}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:0 0 18px;color:var(--muted)}

footer{padding:36px 0 48px;color:var(--faint);font-size:13px}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center}
footer a{color:var(--muted)}
footer .sp{margin-left:auto}

/* privacy page */
.doc{max-width:760px;padding:64px 24px 80px;margin:0 auto}
.doc h1{font-size:36px;margin:0 0 6px}
.doc h2{font-size:20px;margin:40px 0 10px}
.doc p,.doc li{color:var(--muted)}
.doc table{width:100%;border-collapse:collapse;font-size:14.5px;margin:10px 0}
.doc th,.doc td{text-align:left;padding:10px 12px;border:1px solid var(--line);vertical-align:top}
.doc th{background:var(--surface);color:var(--text);font-weight:600}
.doc td{color:var(--muted)}

@media (max-width:900px){
  .hero{padding:56px 0 48px}
  .hero .wrap,.split{grid-template-columns:1fr;gap:40px}
  .grid{grid-template-columns:1fr 1fr}
  .feat:nth-child(2){border-right:0}.feat:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .steps,.privacy{grid-template-columns:1fr}
  .nav nav{display:none}
  section{padding:60px 0}
}
@media (max-width:560px){
  .grid{grid-template-columns:1fr}.feat{border-right:0;border-bottom:1px solid var(--line)}.feat:last-child{border-bottom:0}
  .shots .b{display:none}.shots .a{width:78%}
  .btn{width:100%;justify-content:center}
  footer .sp{margin-left:0}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}