:root{
  --ink:#0f172a; --ink-2:#334155; --muted:#64748b; --line:#e2e8f0;
  --bg:#ffffff; --bg-soft:#f8fafc; --brand:#2563eb; --brand-dark:#1e40af;
  --radius:14px; --shadow:0 1px 2px rgba(15,23,42,.06),0 8px 24px -12px rgba(15,23,42,.18);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  -webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
.narrow{max-width:820px}

.site-head{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.88);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;gap:24px;height:64px}
.brand{font-weight:700;letter-spacing:-.02em;color:var(--ink);font-size:18px}
.brand span{color:var(--brand)}
.site-head nav{margin-left:auto;display:flex;align-items:center;gap:22px;font-size:14px}
.site-head nav a{color:var(--ink-2)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:999px;
  font-weight:600;font-size:14px;border:1px solid transparent;transition:.15s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px -8px rgba(37,99,235,.8)}
.btn-primary:hover{background:var(--brand-dark)}
.btn-ghost{border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:#cbd5e1;background:var(--bg-soft)}

.crumbs{font-size:13px;color:var(--muted);padding:28px 0 0}
.crumbs a{color:var(--muted)}

.hero{padding:24px 0 8px;background:
  radial-gradient(900px 360px at 15% -10%,rgba(37,99,235,.10),transparent 70%),
  radial-gradient(700px 300px at 100% 0%,rgba(30,64,175,.07),transparent 60%)}
.hero-grid{display:grid;grid-template-columns:1fr;gap:28px;align-items:start}
.hero-head{display:flex;gap:18px;align-items:center}
.hero-icon{width:72px;height:72px;border-radius:16px;border:1px solid var(--line);
  background:#fff;box-shadow:var(--shadow);flex:none}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.12;letter-spacing:-.03em;margin:.2em 0 .25em}
.lede{font-size:clamp(17px,2vw,20px);color:var(--ink-2);margin:0 0 18px;max-width:56ch}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 22px}
.chip{font-size:12.5px;font-weight:600;color:var(--ink-2);background:var(--bg-soft);
  border:1px solid var(--line);border-radius:999px;padding:5px 11px}
.chip.on{background:#eff6ff;border-color:#bfdbfe;color:var(--brand-dark)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.shot-frame{margin:34px 0 0;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);background:#fff}
.shot-frame img{width:100%}
.shot-frame figcaption{font-size:13px;color:var(--muted);padding:10px 14px;border-top:1px solid var(--line)}

section{padding:56px 0}
details{border:1px solid var(--line);border-radius:12px;padding:14px 18px;background:#fff;margin:0 0 10px}
details summary{cursor:pointer;font-weight:600;font-size:15.5px}
details p{margin:10px 0 0;color:var(--ink-2);font-size:15px}
section.soft{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
h2{font-size:clamp(22px,2.6vw,30px);letter-spacing:-.02em;margin:0 0 10px}
.sub{color:var(--muted);margin:0 0 30px;max-width:60ch}
.checklist{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:12px 28px}
.checklist li{position:relative;padding:0 0 0 30px;color:var(--ink-2);font-size:15px}
.callout{margin:26px 0 0;padding:16px 20px;border:1px solid #bfdbfe;background:#eff6ff;
  border-radius:12px;color:#1e3a8a;font-size:15px}
.checklist li:before{content:"✓";position:absolute;left:0;top:1px;width:19px;height:19px;border-radius:50%;
  background:#eff6ff;border:1px solid #bfdbfe;color:var(--brand);
  font-size:12px;font-weight:700;line-height:19px;text-align:center}
.gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(420px,1fr));gap:20px}
.gallery figure{margin:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow)}
.gallery figcaption{font-size:13px;color:var(--muted);padding:10px 14px;border-top:1px solid var(--line)}
.two{display:grid;grid-template-columns:1.1fr .9fr;gap:36px}
@media(max-width:820px){.two{grid-template-columns:1fr}}
table.models{width:100%;border-collapse:collapse;font-size:14.5px}
table.models th,table.models td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--line)}
table.models th{color:var(--muted);font-weight:600;font-size:13px;text-transform:uppercase;letter-spacing:.04em}
code{font:13px/1.5 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--bg-soft);
  border:1px solid var(--line);border-radius:6px;padding:1px 6px}
.steps{counter-reset:s;list-style:none;padding:0;margin:0}
.steps li{counter-increment:s;position:relative;padding:0 0 18px 44px;color:var(--ink-2)}
.steps li:before{content:counter(s);position:absolute;left:0;top:-2px;width:28px;height:28px;border-radius:50%;
  background:#eff6ff;color:var(--brand-dark);font-weight:700;font-size:13px;display:grid;place-items:center}
.steps strong{color:var(--ink)}
.cta{background:linear-gradient(135deg,#0f172a,#1e293b);color:#fff;border-radius:20px;padding:36px 32px;
  display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;margin:8px 0 0}
.cta h2{margin:0 0 6px;color:#fff;font-size:24px}
.cta p{margin:0;color:#cbd5e1;font-size:15px}
.cta .btn-primary{background:#fff;color:#0f172a;box-shadow:none}
.cta .btn-primary:hover{background:#e2e8f0}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px}
.card{display:flex;flex-direction:column;gap:10px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);transition:.15s}
.card:hover{transform:translateY(-2px);border-color:#cbd5e1}
.card h3{margin:0;font-size:17px;letter-spacing:-.01em}
.card p{margin:0;font-size:14.5px;color:var(--ink-2)}
.card .ico{width:48px;height:48px;border-radius:12px;border:1px solid var(--line);background:#fff}
.card .more{margin-top:auto;font-size:14px;font-weight:600}

footer{border-top:1px solid var(--line);background:var(--bg-soft);padding:36px 0;font-size:14px;color:var(--muted)}
footer .wrap{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center}