: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;
  --r-xs:4px;--r-sm:6px;--r-md:8px;--r-lg:12px;--r-xl:16px;--r-pill:9999px;
  --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{-webkit-text-size-adjust:100%}
body{
  margin:0;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{text-decoration:underline}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

h1,h2,h3{color:var(--ink);font-weight:400;margin:0 0 16px}
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;margin:0 0 12px}
p{margin:0 0 16px}
.lead{font-size:18px;color:var(--body)}

.label{display:inline-block;font-size:11px;font-weight:600;line-height:1.4;letter-spacing:0.88px;text-transform:uppercase;color:var(--ink)}
.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:var(--r-pill);padding:4px 10px}

.btn{display:inline-block;font-size:14px;font-weight:500;line-height:1;border-radius:var(--r-md);padding:10px 18px;border:1px solid transparent;cursor:pointer;text-align:center}
.btn-primary{background:var(--primary);color:var(--on-primary)}
.btn-primary:hover{background:var(--primary-active);text-decoration:none}
.btn-secondary{background:var(--surface-card);color:var(--ink);border-color:var(--hairline-strong)}
.btn-secondary:hover{text-decoration:none}
.btn-ink{background:var(--ink);color:var(--canvas);padding:12px 20px}
.btn-ink:hover{text-decoration:none;opacity:.92}

.topnav{background:var(--canvas);border-bottom:1px solid var(--hairline)}
.topnav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.wordmark{font-size:18px;font-weight:600;letter-spacing:-0.3px;color:var(--ink)}
.wordmark b{color:var(--primary);font-weight:600}
.nav-links{display:flex;align-items:center;gap:24px;list-style:none;margin:0;padding:0}
.nav-links a{font-size:14px;font-weight:500;color:var(--body)}
.nav-links a:hover{color:var(--ink)}
.nav-toggle{display:none;background:none;border:1px solid var(--hairline-strong);border-radius:var(--r-md);padding:8px 10px;cursor:pointer;color:var(--ink)}

.hero{padding:80px 0 64px}
.hero h1{max-width:14ch}
.hero .lead{max-width:60ch;margin-bottom:24px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap;align-items:center}
.hero-figure{margin-top:48px;background:var(--surface-card);border:1px solid var(--hairline);border-radius:var(--r-lg);overflow:hidden}
.hero-figure img{width:100%;height:420px;object-fit:cover}
.hero-figure figcaption{font-size:13px;color:var(--muted);padding:12px 16px;border-top:1px solid var(--hairline-soft)}

section{padding:80px 0}
.section-head{max-width:64ch;margin-bottom:32px}
.section-head .label{margin-bottom:12px;color:var(--muted)}

.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:var(--r-lg);padding:24px}
.card h4{margin-bottom:8px}
.card p{margin-bottom:0;font-size:16px}
.card .label{color:var(--muted);margin-bottom:12px}

.article-card{background:var(--surface-card);border:1px solid var(--hairline);border-radius:var(--r-lg);overflow:hidden;display:flex;flex-direction:column}
.article-card img{width:100%;height:200px;object-fit:cover}
.article-card .body{padding:24px;display:flex;flex-direction:column;gap:8px}
.article-card h4{margin:0}
.article-card p{margin:0;font-size:16px}
.article-card .meta{font-size:13px;color:var(--muted)}
.article-card .more{font-size:14px;font-weight:500;color:var(--primary);margin-top:4px}

.timeline{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.pill{font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;border-radius:var(--r-pill);padding:4px 10px;color:var(--ink)}
.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)}

.prose{max-width:72ch}
.prose h2{margin-top:48px}
.prose h3{margin-top:32px;font-size:22px;letter-spacing:-0.11px}
.prose p,.prose li{font-size:16px;color:var(--body);letter-spacing:0.08px}
.prose ul,.prose ol{padding-left:20px;margin:0 0 16px}
.prose li{margin-bottom:8px}
.prose figure{margin:32px 0}
.prose figure img{width:100%;border-radius:var(--r-lg);border:1px solid var(--hairline)}
.prose figcaption{font-size:13px;color:var(--muted);margin-top:8px}
.prose blockquote{margin:24px 0;padding:16px 20px;border-left:3px solid var(--hairline-strong);background:var(--surface-card);border-radius:var(--r-sm);color:var(--ink)}
.prose a{color:var(--primary);text-decoration:underline}

.callout{background:var(--surface-card);border:1px solid var(--hairline);border-left:3px solid var(--t-done);border-radius:var(--r-lg);padding:20px;margin:24px 0}
.callout .label{color:var(--muted);margin-bottom:8px}
.callout p{margin:0;color:var(--ink)}

.factrow{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin:24px 0}
.factrow .card{padding:20px}
.factrow .big{font-size:26px;color:var(--ink);letter-spacing:-0.325px;margin-bottom:4px}
.factrow .small{font-size:13px;color:var(--muted)}

.steps{counter-reset:step;list-style:none;padding:0;margin:0}
.steps li{counter-increment:step;position:relative;padding:0 0 16px 40px;margin:0}
.steps li::before{content:counter(step);position:absolute;left:0;top:0;width:26px;height:26px;border-radius:var(--r-pill);background:var(--ink);color:var(--canvas);font-size:13px;font-weight:600;display:flex;align-items:center;justify-content:center}

table.data{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px}
table.data th,table.data td{text-align:left;padding:12px;border-bottom:1px solid var(--hairline)}
table.data th{color:var(--ink);font-weight:600;background:var(--surface-card)}
table.data td{color:var(--body)}

.toc{background:var(--surface-card);border:1px solid var(--hairline);border-radius:var(--r-lg);padding:20px;margin-bottom:32px}
.toc .label{color:var(--muted);margin-bottom:8px}
.toc ul{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px 20px}
.toc a{font-size:14px;color:var(--body)}

.form{background:var(--surface-card);border:1px solid var(--hairline);border-radius:var(--r-lg);padding:32px;max-width:560px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:6px}
.field input{width:100%;height:44px;background:var(--surface-card);color:var(--ink);border:1px solid var(--hairline-strong);border-radius:var(--r-md);padding:12px 16px;font-family:var(--sans);font-size:16px}
.field input:focus{outline:none;border-color:var(--ink)}
.field input.invalid{border-color:var(--error)}
.field .err{display:none;color:var(--error);font-size:13px;margin-top:6px}
.field .err.show{display:block}
.form-note{font-size:13px;color:var(--muted);margin-top:8px}
.form-success{display:none;background:var(--surface-card);border:1px solid var(--success);border-left:3px solid var(--success);border-radius:var(--r-lg);padding:20px;color:var(--ink);margin-bottom:16px}
.form-success.show{display:block}
.btn[disabled]{opacity:.6;cursor:default}

.crumbs{font-size:13px;color:var(--muted);padding:24px 0 0}
.crumbs a{color:var(--muted)}
.page-head{padding:24px 0 48px}

.footer{background:var(--canvas);border-top:1px solid var(--hairline);padding:64px 0 48px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px}
.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;display:flex;flex-direction:column;gap:10px}
.footer a{font-size:14px;color:var(--body)}
.footer .about{font-size:14px;color:var(--body);max-width:42ch}
.footer .wordmark{margin-bottom:12px}
.footer-bottom{border-top:1px solid var(--hairline);margin-top:48px;padding-top:24px;font-size:13px;color:var(--muted);display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}

.cookie{position:fixed;left:24px;right:24px;bottom:24px;z-index:50;background:var(--surface-card);border:1px solid var(--hairline-strong);border-radius:var(--r-lg);padding:20px;display:none;max-width:var(--maxw);margin:0 auto}
.cookie.show{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cookie p{margin:0;font-size:14px;color:var(--body);max-width:62ch}
.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)}
  .hero-figure img{height:340px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-links{display:none;position:absolute;left:0;right:0;top:64px;flex-direction:column;background:var(--canvas);border-bottom:1px solid var(--hairline);padding:16px 24px;gap:16px;z-index:40}
  .topnav-inner{position:relative}
  .nav-links.open{display:flex}
  .nav-toggle{display:inline-block}
}
@media(max-width:640px){
  h1{font-size:32px;letter-spacing:-1px}
  h2{font-size:28px;letter-spacing:-0.5px}
  .grid-3,.grid-2,.factrow{grid-template-columns:1fr}
  .hero{padding:48px 0}
  section{padding:48px 0}
  .hero-figure img{height:240px}
  .footer-grid{grid-template-columns:1fr}
}