:root{--bg:#f6f7f9;--panel:#ffffff;--ink:#14181f;--muted:#5b6472;--line:#dde2e8;--accent:#1f4e79;--hero-bg:#0f1318;--hero-ink:#e6e9ee;--hero-muted:#9aa4b2;--hero-line:#2a323d;--mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;--sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
@media (prefers-color-scheme:dark){:root{--bg:#0f1318;--panel:#161b22;--ink:#e6e9ee;--muted:#9aa4b2;--line:#2a323d;--accent:#7fb3e6}}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 var(--sans);-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
header{border-bottom:1px solid var(--line);background:var(--panel)}
.nav{display:flex;align-items:center;justify-content:space-between;min-height:64px;gap:16px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink);font-weight:600;letter-spacing:.01em}
.brand svg{width:34px;height:34px;flex:none}
.brand small{display:block;font-weight:400;color:var(--muted);font-size:12px;letter-spacing:.04em;text-transform:uppercase}
nav ul{list-style:none;display:flex;gap:22px;margin:0;padding:0;flex-wrap:wrap}
nav a{color:var(--muted);font-size:14px}nav a:hover{color:var(--ink);text-decoration:none}

/* hero: always dark, graph on the right */
.hero{background:var(--hero-bg);color:var(--hero-ink);border-bottom:1px solid var(--hero-line);background-image:linear-gradient(90deg,rgba(31,78,121,.18),transparent 55%)}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;padding-top:56px;padding-bottom:48px}
.hero h1{font-size:clamp(26px,3.8vw,40px);line-height:1.18;margin:0 0 18px;max-width:22ch;letter-spacing:-.01em}
.hero p{font-size:17px;color:var(--hero-muted);max-width:60ch;margin:0 0 10px}
.hero-art{display:block;width:100%;height:auto;max-width:520px;justify-self:end}
.kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin-top:30px;grid-column:1 / -1}
.kv div{border-top:2px solid var(--hero-line);padding-top:10px;font-size:14px;color:var(--hero-muted)}
.kv strong{display:block;color:var(--hero-ink);font-size:15px;margin-bottom:2px}
@media (max-width:820px){.hero .wrap{grid-template-columns:1fr}.hero-art{max-width:380px;justify-self:center;order:-1}}

section{padding:48px 0;border-top:1px solid var(--line)}
h2{font-size:22px;margin:0 0 6px;letter-spacing:-.005em}
.lead{color:var(--muted);margin:0 0 26px;max-width:72ch}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:22px}
.card h3{margin:0 0 10px;font-size:17px;display:flex;align-items:center;gap:10px}
.card h3 svg{width:26px;height:26px;flex:none;color:var(--accent)}
.card ul{margin:0;padding-left:18px;color:var(--muted)}
.card li{margin:4px 0}
.card p{margin:0 0 10px;color:var(--muted)}
.principles{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px 36px}
.principles h3{font-size:15px;margin:0 0 6px;display:flex;align-items:center;gap:8px}
.principles h3 svg{width:18px;height:18px;color:var(--accent);flex:none}
.principles p{margin:0;color:var(--muted);font-size:15px}
.flow{display:block;width:100%;max-width:560px;height:auto;margin:0 0 22px;background:var(--hero-bg);border:1px solid var(--line);border-radius:8px;padding:10px}
.product{display:grid;grid-template-columns:1.2fr 1fr;gap:34px;align-items:start}
@media (max-width:760px){.product{grid-template-columns:1fr}}
.product p{color:var(--muted);margin:0 0 12px}
.spec{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:18px 22px;font-size:14px;margin:0}
.spec dt{color:var(--muted);margin-top:10px;font-size:12px;text-transform:uppercase;letter-spacing:.05em}
.spec dt:first-child{margin-top:0}
.spec dd{margin:2px 0 0}
.contact dl{display:grid;grid-template-columns:max-content 1fr;gap:8px 24px;margin:0}
.contact dt{color:var(--muted)}
.contact dd{margin:0}
code{font-family:var(--mono);font-size:.92em;background:var(--panel);border:1px solid var(--line);border-radius:4px;padding:1px 6px}
footer{border-top:1px solid var(--line);padding:28px 0 40px;color:var(--muted);font-size:13px}
footer .row{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.note{font-size:14px;color:var(--muted)}
.mt{margin-top:20px}