:root{
  --primary:#f54e00;
  --primary-active:#d04200;
  --canvas:#f7f7f4;
  --canvas-soft:#fafaf7;
  --surface-card:#ffffff;
  --surface-strong:#e6e5e0;
  --hairline:#e6e5e0;
  --hairline-soft:#efeee8;
  --hairline-strong:#cfcdc4;
  --ink:#26251e;
  --body:#5a5852;
  --muted:#807d72;
  --muted-soft:#a09c92;
  --on-primary:#ffffff;
  --success:#1f8a65;
  --error:#cf2d56;
  --sans:Inter,system-ui,"Helvetica Neue",Helvetica,Arial,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--canvas);
  color:var(--body);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.5;
  letter-spacing:-0.15px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none}
a:hover{color:var(--primary)}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-tight{padding:48px 0}

h1,h2,h3{color:var(--ink);font-weight:400}
h1{font-size:72px;line-height:1.1;letter-spacing:-2.16px}
h2{font-size:36px;line-height:1.2;letter-spacing:-0.72px}
h3{font-size:26px;line-height:1.25;letter-spacing:-0.325px}
h4{color:var(--ink);font-size:18px;font-weight:600;letter-spacing:0}
p{margin-bottom:16px}
.lead{font-size:18px;color:var(--body)}

.label{
  font-size:11px;font-weight:600;line-height:1.4;
  letter-spacing:0.88px;text-transform:uppercase;color:var(--muted);
}
.badge{
  display:inline-block;background:var(--surface-strong);color:var(--ink);
  font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;
  border-radius:9999px;padding:4px 10px;
}

.top-nav{
  background:var(--canvas);border-bottom:1px solid var(--hairline);
  position:sticky;top:0;z-index:50;
}
.top-nav .container{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;color:var(--ink);font-weight:600;letter-spacing:-0.3px}
.brand .dot{width:14px;height:14px;background:var(--primary);border-radius:4px;display:inline-block}
.nav-links{display:flex;align-items:center;gap:24px;list-style:none}
.nav-links a{font-size:14px;font-weight:500;color:var(--ink)}
.nav-toggle{display:none;background:none;border:1px solid var(--hairline-strong);border-radius:8px;padding:6px 10px;cursor:pointer;font-size:18px;color:var(--ink)}

.btn{
  display:inline-block;font-size:14px;font-weight:500;line-height:1;
  border-radius:8px;padding:10px 18px;cursor:pointer;border:1px solid transparent;
}
.btn-primary{background:var(--primary);color:var(--on-primary)}
.btn-primary:hover{background:var(--primary-active);color:var(--on-primary)}
.btn-secondary{background:var(--surface-card);color:var(--ink);border:1px solid var(--hairline-strong)}
.btn-secondary:hover{color:var(--ink);border-color:var(--ink)}
.btn-ink{background:var(--ink);color:var(--canvas);padding:12px 20px}
.btn-ink:hover{color:var(--canvas);opacity:.9}

.hero{background:var(--canvas)}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.hero-meta{margin-bottom:16px}
.hero p{margin-top:16px;max-width:520px}
.hero-actions{display:flex;gap:12px;margin-top:24px;flex-wrap:wrap}
.hero-figure{border:1px solid var(--hairline);border-radius:12px;overflow:hidden;background:var(--surface-card)}
.hero-figure img{width:100%;height:420px;object-fit:cover}
.figcap{font-size:13px;color:var(--muted);padding:12px 16px;border-top:1px solid var(--hairline)}

.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{
  background:var(--surface-card);border:1px solid var(--hairline);
  border-radius:12px;padding:24px;
}
.card h4{margin-bottom:8px}
.card p{font-size:15px;margin-bottom:0}
.card .label{margin-bottom:12px;display:block}

.article-card{background:var(--surface-card);border:1px solid var(--hairline);border-radius:12px;overflow:hidden;display:flex;flex-direction:column}
.article-card img{width:100%;height:200px;object-fit:cover}
.article-card .body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1}
.article-card h4{font-size:18px}
.article-card p{font-size:15px;margin:0}
.article-card .meta{font-size:13px;color:var(--muted);margin-top:auto}

.section-head{margin-bottom:32px;max-width:720px}
.section-head .label{margin-bottom:12px}
.section-head p{margin-top:12px}

.article-body{max-width:760px;margin:0 auto}
.article-body h2{margin:40px 0 16px}
.article-body h3{margin:28px 0 12px;font-size:22px}
.article-body p{color:var(--body)}
.article-body ul,.article-body ol{margin:0 0 16px 22px;color:var(--body)}
.article-body li{margin-bottom:8px}
.article-hero{border:1px solid var(--hairline);border-radius:12px;overflow:hidden;margin:24px 0}
.article-hero img{width:100%;height:380px;object-fit:cover}
.article-meta{font-size:13px;color:var(--muted);margin-bottom:8px}
.callout{background:var(--surface-card);border:1px solid var(--hairline);border-left:3px solid var(--primary);border-radius:8px;padding:20px;margin:24px 0}
.callout p{margin:0;font-size:15px}
.spec-table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.spec-table th,.spec-table td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--hairline)}
.spec-table th{color:var(--ink);font-weight:600;background:var(--canvas-soft)}
.steps{counter-reset:step;list-style:none;margin:0 0 16px 0}
.steps li{position:relative;padding-left:42px;margin-bottom:16px;color:var(--body)}
.steps li::before{counter-increment:step;content:counter(step);position:absolute;left:0;top:0;width:28px;height:28px;border-radius:9999px;background:var(--ink);color:var(--canvas);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600}
.refs{font-size:14px;color:var(--body)}
.refs a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--hairline-strong)}

.toc{background:var(--canvas-soft);border:1px solid var(--hairline);border-radius:12px;padding:20px 24px;margin:24px 0}
.toc .label{margin-bottom:12px;display:block}
.toc ul{list-style:none}
.toc li{margin-bottom:8px}
.toc a{color:var(--body);font-size:15px}

.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:16px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.form-field{margin-bottom:16px}
.form-field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:6px}
.form-field input,.form-field textarea{
  width:100%;background:var(--surface-card);color:var(--ink);font-family:var(--sans);font-size:15px;
  border:1px solid var(--hairline-strong);border-radius:8px;padding:12px 16px;min-height:44px;
}
.form-field textarea{min-height:120px;resize:vertical}
.form-field input:focus,.form-field textarea:focus{outline:none;border-color:var(--ink)}
.form-note{font-size:13px;color:var(--muted);margin-top:4px}
.form-msg{display:none;border-radius:8px;padding:14px 16px;font-size:15px;margin-bottom:16px}
.form-msg.success{display:block;background:var(--canvas-soft);border:1px solid var(--success);color:var(--success)}
.contact-meta dt{font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;color:var(--muted);margin-top:16px}
.contact-meta dd{color:var(--ink);font-size:15px}

.footer{background:var(--canvas);border-top:1px solid var(--hairline);padding:64px 0 48px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer h5{font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;color:var(--muted);margin-bottom:16px}
.footer ul{list-style:none}
.footer li{margin-bottom:10px}
.footer a{font-size:14px;color:var(--body)}
.footer .brand{margin-bottom:12px}
.footer-bottom{margin-top:48px;padding-top:24px;border-top:1px solid var(--hairline);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--muted)}

.cookie-banner{
  position:fixed;left:24px;right:24px;bottom:24px;z-index:100;
  background:var(--surface-card);border:1px solid var(--hairline-strong);border-radius:12px;
  padding:20px 24px;display:none;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap;max-width:1152px;margin:0 auto;
}
.cookie-banner.show{display:flex}
.cookie-banner p{margin:0;font-size:14px;color:var(--body);max-width:680px}
.cookie-actions{display:flex;gap:12px}

@media (max-width:1024px){
  h1{font-size:56px;letter-spacing:-1.5px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .nav-links{display:none}
  .nav-links.open{display:flex;position:absolute;top:64px;left:0;right:0;flex-direction:column;background:var(--canvas);border-bottom:1px solid var(--hairline);padding:16px 24px;gap:16px}
  .nav-toggle{display:inline-block}
  .hero-grid,.contact-grid{grid-template-columns:1fr}
  .grid-3,.grid-2{grid-template-columns:1fr}
  h1{font-size:36px;letter-spacing:-1px}
  .section{padding:48px 0}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:480px){
  .footer-grid{grid-template-columns:1fr}
}