: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;
  --t-thinking:#dfa88f;
  --t-grep:#9fc9a2;
  --t-read:#9fbbe0;
  --t-edit:#c0a8dd;
  --t-done:#c08532;
  --sans:"Inter",system-ui,"Helvetica Neue",Helvetica,Arial,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --maxw:1200px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--canvas);
  color:var(--body);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  letter-spacing:-0.15px;
}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
a{color:var(--ink);text-decoration:none;}
a:hover{text-decoration:underline;}
img{max-width:100%;height:auto;display:block;}

h1,h2,h3,h4{color:var(--ink);font-weight:400;margin:0 0 16px;}
h1{font-size:48px;line-height:1.1;letter-spacing:-1.6px;}
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{font-size:22px;line-height:1.3;letter-spacing:-0.11px;}
p{margin:0 0 16px;}

.top-nav{
  background:var(--canvas);
  border-bottom:1px solid var(--hairline);
  position:sticky;top:0;z-index:50;
}
.top-nav .container{
  height:64px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.wordmark{
  font-size:18px;font-weight:600;color:var(--ink);letter-spacing:-0.3px;
  display:flex;align-items:center;gap:8px;
}
.wordmark .dot{width:10px;height:10px;border-radius:9999px;background:var(--primary);display:inline-block;}
.nav-menu{display:flex;align-items:center;gap:24px;list-style:none;margin:0;padding:0;}
.nav-menu a{font-size:14px;font-weight:500;color:var(--ink);}
.nav-menu a.active{color:var(--primary);}
.nav-toggle{display:none;background:none;border:1px solid var(--hairline-strong);border-radius:8px;padding:8px 10px;cursor:pointer;color:var(--ink);font-size:14px;}

.hero-band{padding:80px 0 48px;border-bottom:1px solid var(--hairline);}
.hero-grid{display:grid;grid-template-columns:1.1fr 0.9fr;gap:48px;align-items:center;}
.badge-pill{
  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;margin-bottom:20px;
}
.hero-band h1{margin-bottom:20px;}
.hero-sub{font-size:18px;color:var(--body);max-width:560px;}
.hero-media{border-radius:12px;border:1px solid var(--hairline);overflow:hidden;background:var(--surface-card);}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.figure-caption{font-size:13px;color:var(--muted);padding:8px 16px;}

.section{padding:80px 0;}
.section-tight{padding:48px 0;}
.section-label{
  font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;color:var(--muted);
  margin-bottom:12px;
}
.section-head{max-width:680px;margin-bottom:48px;}

.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.feature-card{
  background:var(--surface-card);border:1px solid var(--hairline);border-radius:12px;padding:24px;
}
.feature-card h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.feature-card p{margin:0;font-size:15px;}

.card-link{
  background:var(--surface-card);border:1px solid var(--hairline);border-radius:12px;overflow:hidden;
  display:flex;flex-direction:column;
}
.card-link img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.card-link .card-body{padding:20px;}
.card-link h3{font-size:20px;margin-bottom:8px;}
.card-link p{font-size:15px;color:var(--body);margin-bottom:12px;}
.read-on{font-size:14px;font-weight:500;color:var(--primary);}

.timeline{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0;}
.pill{
  font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;color:var(--ink);
  border-radius:9999px;padding:4px 10px;
}
.pill.thinking{background:var(--t-thinking);}
.pill.grep{background:var(--t-grep);}
.pill.read{background:var(--t-read);}
.pill.edit{background:var(--t-edit);}
.pill.done{background:var(--t-done);color:var(--on-primary);}

.code-block{
  background:var(--surface-card);border:1px solid var(--hairline);border-radius:12px;padding:20px;
  font-family:var(--mono);font-size:13px;line-height:1.5;color:var(--ink);overflow-x:auto;
}

.article-wrap{padding:48px 0 80px;}
.article-grid{display:grid;grid-template-columns:1fr 280px;gap:48px;align-items:start;}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:16px;}
.breadcrumb a{color:var(--muted);}
.article-meta{font-size:13px;color:var(--muted);margin-bottom:24px;}
.article-body{font-size:16px;color:var(--body);}
.article-body h2{margin-top:40px;}
.article-body h3{margin-top:28px;font-size:22px;}
.article-body ul,.article-body ol{padding-left:20px;margin:0 0 16px;}
.article-body li{margin-bottom:8px;}
.article-figure{margin:24px 0;border:1px solid var(--hairline);border-radius:12px;overflow:hidden;background:var(--surface-card);}
.article-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.callout{
  background:var(--canvas-soft);border:1px solid var(--hairline);border-left:3px solid var(--primary);
  border-radius:8px;padding:16px 20px;margin:24px 0;font-size:15px;
}
.data-table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.data-table th,.data-table td{border:1px solid var(--hairline);padding:10px 14px;text-align:left;}
.data-table th{background:var(--surface-strong);color:var(--ink);font-weight:600;}
.sidebar-card{
  background:var(--surface-card);border:1px solid var(--hairline);border-radius:12px;padding:24px;
  position:sticky;top:88px;
}
.sidebar-card h4{font-size:16px;font-weight:600;margin-bottom:12px;}
.sidebar-card ul{list-style:none;padding:0;margin:0;}
.sidebar-card li{margin-bottom:10px;font-size:14px;}
.refs{font-size:14px;}
.refs ol{padding-left:18px;}
.refs a{color:var(--ink);text-decoration:underline;}

.contact-band{background:var(--canvas-soft);border-top:1px solid var(--hairline);border-bottom:1px solid var(--hairline);}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.form-field{display:flex;flex-direction:column;gap:6px;}
.form-field.full{grid-column:1 / -1;}
.form-field label{font-size:14px;font-weight:600;color:var(--ink);}
.text-input{
  background:var(--surface-card);color:var(--ink);border:1px solid var(--hairline-strong);
  border-radius:8px;padding:12px 16px;height:44px;font-family:var(--sans);font-size:15px;
}
textarea.text-input{height:auto;min-height:120px;resize:vertical;}
.text-input:focus{outline:none;border-color:var(--primary);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;border:none;
  font-family:var(--sans);font-size:14px;font-weight:500;border-radius:8px;
}
.btn-primary{background:var(--primary);color:var(--on-primary);padding:10px 18px;height:40px;}
.btn-primary:hover{background:var(--primary-active);text-decoration:none;}
.btn-primary:disabled{opacity:0.6;cursor:default;}
.form-status{font-size:14px;margin-top:8px;display:none;}
.form-status.show{display:block;}
.form-status.ok{color:var(--success);}
.field-error{color:var(--error);font-size:13px;display:none;}
.field-error.show{display:block;}

.cta-band{padding:96px 0;text-align:center;border-top:1px solid var(--hairline);}
.cta-band h2{margin-bottom:24px;}

.footer{background:var(--canvas);border-top:1px solid var(--hairline);padding:48px 0 64px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;}
.footer h5{font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;color:var(--muted);margin:0 0 16px;}
.footer ul{list-style:none;padding:0;margin:0;}
.footer li{margin-bottom:10px;}
.footer a{font-size:14px;color:var(--body);}
.footer .brand-col p{font-size:14px;color:var(--body);max-width:320px;}
.footer-bottom{border-top:1px solid var(--hairline);margin-top:40px;padding-top:24px;font-size:13px;color:var(--muted);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;}
.disclaimer{font-size:13px;color:var(--muted);max-width:760px;margin-top:12px;}

.cookie-banner{
  position:fixed;left:24px;right:24px;bottom:24px;z-index:60;
  background:var(--surface-card);border:1px solid var(--hairline-strong);border-radius:12px;
  padding:20px 24px;display:none;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  max-width:var(--maxw);margin:0 auto;
}
.cookie-banner.show{display:flex;}
.cookie-text{font-size:14px;color:var(--body);max-width:680px;}
.cookie-actions{display:flex;gap:12px;}
.btn-secondary{background:var(--surface-card);color:var(--ink);border:1px solid var(--hairline-strong);padding:10px 18px;height:40px;}
.btn-secondary:hover{background:var(--canvas-soft);text-decoration:none;}

@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;}
  .article-grid{grid-template-columns:1fr;}
  .sidebar-card{position:static;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  h1{font-size:40px;}
}
@media (max-width:768px){
  .nav-menu{
    display:none;position:absolute;top:64px;left:0;right:0;background:var(--canvas);
    flex-direction:column;align-items:flex-start;gap:0;border-bottom:1px solid var(--hairline);padding:8px 24px 16px;
  }
  .nav-menu.open{display:flex;}
  .nav-menu li{width:100%;padding:8px 0;}
  .nav-toggle{display:inline-block;}
  .grid-3,.grid-2,.form-grid,.footer-grid{grid-template-columns:1fr;}
  h1{font-size:32px;letter-spacing:-1px;}
  h2{font-size:28px;}
  .section{padding:48px 0;}
  .hero-band{padding:48px 0 32px;}
}