:root{
  --bg:#FFFFFF; --panel:#F3F3F1; --line:#E2E2DF;
  --ink:#111111; --ink-soft:#6B6B68; --accent:#1F5C46;
  --sans:"Helvetica Neue",Helvetica,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0E0E0E; --panel:#181818; --line:#2A2A2A;
  --ink:#F2F2EF; --ink-soft:#9A9A96; --accent:#6FC3A0;
}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:inherit}
img{max-width:100%;height:auto;display:block}
p{margin:0 0 1em}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:800px){.wrap{padding:0 40px}}
h1,h2,h3{font-weight:500;margin:0;letter-spacing:-.035em;line-height:1}

/* header */
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:600;font-size:16px;letter-spacing:-.01em}
.brand img{width:22px;height:22px}
.top nav{display:flex;gap:28px;font-size:15px}
.top nav a,.foot a{text-decoration:none;color:var(--ink-soft)}
.top nav a:hover,.foot a:hover{color:var(--ink)}
@media (max-width:520px){.top nav{gap:16px;font-size:14px}.top nav a:not(:last-child){display:none}}

/* hero */
.hero{padding:96px 0 64px;border-bottom:1px solid var(--line)}
.hero h1{font-size:clamp(44px,9vw,120px);max-width:11ch}
.hero .sub{margin:36px 0 0;max-width:30em;font-size:clamp(18px,2vw,22px);color:var(--ink-soft);line-height:1.4}

/* numbered sections */
.sec{display:grid;gap:24px;padding:56px 0;border-bottom:1px solid var(--line)}
@media (min-width:800px){.sec{grid-template-columns:220px 1fr;gap:40px;padding:80px 0}}
.label{font-size:15px;color:var(--ink-soft);margin:0}
.sec h2{font-size:clamp(28px,3.6vw,44px);max-width:20ch;margin-bottom:24px}
.prose{max-width:36em;font-size:19px;line-height:1.5}
.prose p:last-child{margin:0}

/* app row */
.app{display:grid;gap:32px}
@media (min-width:900px){.app{grid-template-columns:1fr 360px;gap:56px;align-items:start}}
.app-title{display:flex;align-items:center;gap:14px;margin-bottom:28px}
.app-title img{width:52px;height:52px;border-radius:12px;border:1px solid var(--line);background:#fff;padding:5px}
.app-title h3{font-size:clamp(32px,4vw,48px)}
.facts{display:grid;grid-template-columns:auto 1fr;gap:10px 32px;margin:28px 0;padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:15px}
.facts dt{color:var(--ink-soft)}
.facts dd{margin:0}
.link{font-weight:500;text-decoration:none;color:var(--accent);border-bottom:1.5px solid currentColor;padding-bottom:2px}
.shot{background:var(--panel);padding:40px 0 0;display:flex;justify-content:center;overflow:hidden;height:440px}
.shot img{width:230px;border-radius:30px 30px 0 0}
.note{margin:40px 0 0;color:var(--ink-soft)}

.contact a{color:var(--accent)}

/* footer */
.foot{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding-top:32px;padding-bottom:40px;font-size:14px;color:var(--ink-soft)}
.foot p{margin:0}
.foot nav{display:flex;gap:24px}

/* text pages */
.doc{padding:72px 0 96px}
.doc h1{font-size:clamp(40px,6vw,72px);margin-bottom:12px}
.doc .updated{color:var(--ink-soft);margin-bottom:48px}
.doc section{display:grid;gap:8px;padding:28px 0;border-top:1px solid var(--line)}
@media (min-width:800px){.doc section{grid-template-columns:220px 1fr;gap:40px}}
.doc h2{font-size:19px;letter-spacing:-.01em;line-height:1.4}
.doc section p{max-width:36em;margin:0}
.doc a{color:var(--accent)}