: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;
  --t-thinking:#dfa88f;
  --t-grep:#9fc9a2;
  --t-read:#9fbbe0;
  --t-edit:#c0a8dd;
  --t-done:#c08532;
  --success:#1f8a65;
  --error:#cf2d56;
  --maxw:1200px;
  --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{
  font-family:var(--sans);
  font-weight:400;
  letter-spacing:-0.15px;
  background:var(--canvas);
  color:var(--body);
  font-size:16px;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--canvas);padding:10px 16px;z-index:200;border-radius:8px}
.skip-link:focus{left:16px;top:16px}

.site-header{position:sticky;top:0;z-index:100;background:var(--canvas);border-bottom:1px solid var(--hairline)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:600;color:var(--ink);letter-spacing:-0.3px}
.brand:hover{text-decoration:none}
.brand-mark{width:22px;height:22px;color:var(--primary)}
.nav-menu{display:flex;align-items:center;gap:24px;list-style:none}
.nav-link{font-size:14px;font-weight:500;color:var(--body);letter-spacing:0}
.nav-link:hover{color:var(--ink);text-decoration:none}
.nav-link[aria-current="page"]{color:var(--ink)}
.nav-toggle{display:none;background:var(--surface-card);border:1px solid var(--hairline-strong);border-radius:8px;width:40px;height:40px;cursor:pointer;align-items:center;justify-content:center}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{display:block;width:18px;height:1.5px;background:var(--ink);position:relative;content:""}
.nav-toggle span::before{position:absolute;top:-6px}
.nav-toggle span::after{position:absolute;top:6px}

.hero{padding:80px 0 56px}
.hero-grid{display:grid;grid-template-columns:1.1fr 0.9fr;gap:48px;align-items:center}
.eyebrow{font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;color:var(--muted)}
h1,h2,h3{color:var(--ink);font-weight:400;letter-spacing:-0.5px;line-height:1.2}
.hero h1{font-size:72px;line-height:1.1;letter-spacing:-2.16px;margin:16px 0}
.lead{font-size:18px;color:var(--body);max-width:46ch}
.hero-figure{border-radius:12px;overflow:hidden;border:1px solid var(--hairline);background:var(--surface-card)}
.hero-figure img{width:100%;height:380px;object-fit:cover}
.figure-cap{font-size:13px;color:var(--muted);padding:10px 16px}

.section{padding:80px 0}
.section-soft{background:var(--canvas-soft);border-top:1px solid var(--hairline-soft);border-bottom:1px solid var(--hairline-soft)}
.section-head{max-width:60ch;margin-bottom:32px}
.section-head h2{font-size:36px;letter-spacing:-0.72px}
.section-head p{margin-top:12px;color:var(--body)}
.label{font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;color:var(--muted);margin-bottom:12px}

.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}

.card{background:var(--surface-card);border:1px solid var(--hairline);border-radius:12px;padding:24px}
.card h3{font-size:22px;letter-spacing:-0.11px;margin-bottom:8px}
.card p{font-size:16px;color:var(--body)}
.card .label{margin-bottom:8px}

.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:180px;object-fit:cover}
.article-card .body{padding:24px;display:flex;flex-direction:column;gap:8px;flex:1}
.article-card h3{font-size:22px;letter-spacing:-0.11px}
.article-card .meta{font-size:13px;color:var(--muted)}
.read{font-size:14px;font-weight:500;color:var(--ink);margin-top:auto}

.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}

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

.callout{border-left:3px solid var(--primary);background:var(--canvas-soft);border-radius:8px;padding:16px 20px;margin:24px 0}
.callout .label{margin-bottom:4px}

.article{padding:56px 0 80px}
.article-layout{display:grid;grid-template-columns:1fr 280px;gap:48px;align-items:start}
.prose{max-width:68ch}
.prose h1{font-size:48px;letter-spacing:-1.2px;line-height:1.1;margin-bottom:12px}
.prose .meta{font-size:13px;color:var(--muted);margin-bottom:24px}
.prose figure{margin:24px 0;border:1px solid var(--hairline);border-radius:12px;overflow:hidden;background:var(--surface-card)}
.prose figure img{width:100%;height:340px;object-fit:cover}
.prose figcaption{font-size:13px;color:var(--muted);padding:10px 16px}
.prose h2{font-size:26px;letter-spacing:-0.325px;margin:32px 0 12px}
.prose h3{font-size:22px;letter-spacing:-0.11px;margin:24px 0 8px}
.prose p{margin-bottom:16px}
.prose ul,.prose ol{margin:0 0 16px 22px}
.prose li{margin-bottom:8px}
.prose a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--hairline-strong);text-underline-offset:3px}

.aside{position:sticky;top:88px;display:flex;flex-direction:column;gap:24px}
.aside .card{padding:20px}
.aside .card h3{font-size:16px;font-weight:600;letter-spacing:0}
.aside ul{list-style:none;display:flex;flex-direction:column;gap:8px;margin-top:12px}
.aside ul a{font-size:14px;color:var(--body)}

.refs{margin-top:40px;padding-top:24px;border-top:1px solid var(--hairline)}
.refs h2{font-size:22px;margin-bottom:12px}
.refs ol{margin-left:20px}
.refs li{font-size:14px;color:var(--body);margin-bottom:8px}

.form-band{padding:80px 0}
.form-card{background:var(--surface-card);border:1px solid var(--hairline);border-radius:12px;padding:32px;max-width:640px}
.form-row{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.form-row label{font-size:14px;font-weight:600;color:var(--ink)}
.form-row input,.form-row textarea{
  background:var(--surface-card);border:1px solid var(--hairline-strong);border-radius:8px;
  padding:12px 16px;font-family:var(--sans);font-size:16px;color:var(--ink);min-height:44px;
}
.form-row textarea{min-height:120px;resize:vertical}
.form-row input:focus,.form-row textarea:focus{outline:2px solid var(--primary);outline-offset:1px;border-color:var(--primary)}
.field-error{color:var(--error);font-size:13px;display:none}
.form-row.invalid .field-error{display:block}
.form-row.invalid input,.form-row.invalid textarea{border-color:var(--error)}
.btn{display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:500;border-radius:8px;border:none;cursor:pointer;padding:10px 18px;height:40px}
.btn-primary{background:var(--primary);color:var(--on-primary)}
.btn-primary:active{background:var(--primary-active)}
.btn-primary:hover{text-decoration:none}
.btn[disabled]{opacity:.6;cursor:default}
.form-status{margin-top:16px;font-size:14px;color:var(--success);display:none}
.form-status.show{display:block}
.spinner{width:14px;height:14px;border:2px solid rgba(255,255,255,.5);border-top-color:#fff;border-radius:9999px;display:inline-block;margin-right:8px;animation:spin .7s linear infinite;vertical-align:-2px}
@keyframes spin{to{transform:rotate(360deg)}}

.site-footer{background:var(--canvas);border-top:1px solid var(--hairline);padding:48px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:32px;margin-bottom:32px}
.footer-grid h4{font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.footer-grid ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.footer-grid a{font-size:14px;color:var(--body)}
.footer-about p{font-size:14px;color:var(--body);max-width:34ch;margin-top:12px}
.footer-bottom{border-top:1px solid var(--hairline);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:70ch;margin-top:12px}

.cookie{position:fixed;left:24px;right:24px;bottom:24px;z-index:150;background:var(--surface-card);border:1px solid var(--hairline-strong);border-radius:12px;padding:20px 24px;display:none;flex-wrap:wrap;align-items:center;gap:16px;justify-content:space-between}
.cookie.show{display:flex}
.cookie p{font-size:14px;color:var(--body);max-width:60ch}
.cookie .actions{display:flex;gap:12px}
.btn-secondary{background:var(--surface-card);color:var(--ink);border:1px solid var(--hairline-strong)}

@media (max-width:1024px){
  .hero h1{font-size:56px;letter-spacing:-1.5px}
  .article-layout{grid-template-columns:1fr}
  .aside{position:static}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .nav-menu{display:none;position:absolute;top:64px;left:0;right:0;background:var(--canvas);border-bottom:1px solid var(--hairline);flex-direction:column;align-items:flex-start;gap:0;padding:8px 24px}
  .nav-menu.open{display:flex}
  .nav-menu li{width:100%;padding:10px 0;border-bottom:1px solid var(--hairline-soft)}
  .nav-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero h1{font-size:32px;letter-spacing:-1px}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section,.hero,.form-band{padding:48px 0}
  .prose h1{font-size:34px;letter-spacing:-0.8px}
}