: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;
  --container:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  background:var(--canvas);
  color:var(--body);
  font-size:16px;
  line-height:1.5;
  letter-spacing:-0.015em;
  -webkit-font-smoothing:antialiased;
}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{color:var(--ink);font-weight:400;letter-spacing:-0.02em;line-height:1.2}
h1{font-size:72px;letter-spacing:-0.03em;line-height:1.1}
h2{font-size:36px}
h3{font-size:26px;line-height:1.25}
p{margin-bottom:16px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--canvas);padding:10px 16px;border-radius:var(--r-md);z-index:1000}
.skip-link:focus{left:16px;top:16px}

.top-nav{background:var(--canvas);border-bottom:1px solid var(--hairline);position:sticky;top:0;z-index:100}
.nav-inner{height:64px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand-mark{width:14px;height:14px;background:var(--primary);border-radius:var(--r-xs);display:inline-block}
.brand-word{font-size:18px;font-weight:600;color:var(--ink);letter-spacing:-0.01em}
.primary-menu{display:flex;align-items:center;gap:24px}
.nav-link{font-size:14px;font-weight:500;color:var(--body);letter-spacing:0}
.nav-link:hover{color:var(--ink);text-decoration:none}
.nav-toggle{display:none;flex-direction:column;gap:4px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:22px;height:2px;background:var(--ink);display:block}

.btn{display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:500;cursor:pointer;border-radius:var(--r-md);border:1px solid transparent;line-height:1;text-decoration:none}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--primary);color:var(--on-primary);padding:10px 18px;height:40px}
.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);padding:10px 18px;height:40px}
.btn-download{background:var(--ink);color:var(--canvas);padding:12px 20px;height:44px}
.btn-download:hover{color:var(--canvas);opacity:.9}
.btn-text{color:var(--ink);background:none;padding:10px 4px;height:40px}

.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:var(--r-pill);padding:4px 10px}
.section-label{font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;color:var(--muted);margin-bottom:12px}

section{padding:80px 0}
.section-tight{padding:48px 0}

.hero-band{background:var(--canvas);padding:80px 0 48px}
.hero-grid{display:grid;grid-template-columns:1fr;gap:32px}
.hero-copy{max-width:760px}
.hero-sub{font-size:16px;color:var(--body);max-width:620px;margin-top:8px;letter-spacing:0.08px}
.hero-actions{display:flex;gap:16px;align-items:center;margin-top:24px;flex-wrap:wrap}
.hero-figure{margin-top:32px;border:1px solid var(--hairline);border-radius:var(--r-lg);overflow:hidden;background:var(--surface-card)}
.hero-figure img{width:100%;height:440px;object-fit:cover}
figcaption{font-size:13px;color:var(--muted);padding:12px 16px;border-top:1px solid var(--hairline-soft);background:var(--surface-card)}

.card{background:var(--surface-card);border:1px solid var(--hairline);border-radius:var(--r-lg);padding:24px}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card h3{font-size:22px;margin-bottom:8px}
.feature-card p{font-size:16px;color:var(--body);margin:0}
.feature-card .section-label{margin-bottom:16px}

.split{display:grid;grid-template-columns:repeat(2,1fr);gap:48px;align-items:center}
.split-media{border:1px solid var(--hairline);border-radius:var(--r-lg);overflow:hidden}
.split-media img{width:100%;height:340px;object-fit:cover}

.articles-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.article-card{display:flex;flex-direction:column;overflow:hidden;padding:0}
.article-card .thumb{height:200px;overflow:hidden;border-bottom:1px solid var(--hairline)}
.article-card .thumb img{width:100%;height:100%;object-fit:cover}
.article-card .body{padding:24px;display:flex;flex-direction:column;gap:8px}
.article-card h3{font-size:22px}
.article-card p{font-size:14px;color:var(--body);margin:0}
.article-card .read{font-size:14px;font-weight:500;color:var(--primary);margin-top:8px}

.checklist{list-style:none;display:grid;gap:12px}
.checklist li{position:relative;padding-left:28px;color:var(--body)}
.checklist li::before{content:"";position:absolute;left:0;top:6px;width:14px;height:14px;border-radius:var(--r-xs);background:var(--t-grep)}

.stage-pills{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}
.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)}

.note-block{background:var(--canvas-soft);border:1px solid var(--hairline);border-left:3px solid var(--t-read);border-radius:var(--r-md);padding:20px;font-family:var(--mono);font-size:13px;color:var(--ink)}
.code-block{background:var(--surface-card);border:1px solid var(--hairline);border-radius:var(--r-lg);padding:20px;font-family:var(--mono);font-size:13px;color:var(--ink);overflow-x:auto}

.article-wrap{max-width:760px;margin:0 auto}
.article-hero{border:1px solid var(--hairline);border-radius:var(--r-lg);overflow:hidden;margin:24px 0}
.article-hero img{width:100%;height:380px;object-fit:cover}
.article-meta{display:flex;gap:12px;align-items:center;flex-wrap:wrap;color:var(--muted);font-size:13px;margin-top:12px}
.article-wrap h2{font-size:26px;margin:32px 0 12px}
.article-wrap h3{font-size:22px;margin:24px 0 8px}
.article-wrap p,.article-wrap li{color:var(--body);font-size:16px;letter-spacing:0.08px}
.article-wrap ul,.article-wrap ol{margin:0 0 16px 20px}
.article-wrap li{margin-bottom:6px}
.related{border-top:1px solid var(--hairline);margin-top:48px;padding-top:32px}
.ref-list{list-style:none}
.ref-list li{padding:8px 0;border-bottom:1px solid var(--hairline-soft);font-size:14px}

table.data{width:100%;border-collapse:collapse;margin:16px 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}

.form-band{background:var(--canvas)}
.form-card{max-width:640px;margin:0 auto}
.form-row{display:grid;gap:16px;margin-bottom:16px}
.form-row label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:6px}
.text-input{width:100%;background:var(--surface-card);color:var(--ink);border:1px solid var(--hairline-strong);border-radius:var(--r-md);padding:12px 16px;height:44px;font-family:var(--sans);font-size:16px}
textarea.text-input{height:auto;min-height:120px;resize:vertical}
.text-input:focus{outline:2px solid var(--ink);outline-offset:1px;border-color:var(--ink)}
.form-note{font-size:13px;color:var(--muted)}
.form-feedback{display:none;margin-top:16px;padding:14px 16px;border-radius:var(--r-md);font-size:14px}
.form-feedback.show{display:block}
.form-feedback.success{background:rgba(31,138,101,.1);color:var(--success);border:1px solid var(--success)}
.btn[disabled]{opacity:.6;cursor:not-allowed}

.cta-band{background:var(--canvas);text-align:center;padding:96px 0}
.cta-band h2{font-size:36px;max-width:680px;margin:0 auto 16px}
.cta-band p{max-width:560px;margin:0 auto 8px}

.footer{background:var(--canvas);border-top:1px solid var(--hairline);padding:64px 0 32px;color:var(--body)}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:32px}
.footer-head{font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;color:var(--muted);margin-bottom:16px}
.footer-link{display:block;font-size:14px;color:var(--body);margin-bottom:8px}
.footer-link:hover{color:var(--ink)}
.footer-note{font-size:14px;color:var(--body);margin-top:12px}
.footer-updated{font-size:13px;color:var(--muted-soft);margin-top:8px}
.footer-bottom{margin-top:48px;padding-top:24px;border-top:1px solid var(--hairline-soft);font-size:13px;color:var(--muted)}

.cookie-banner{position:fixed;left:24px;right:24px;bottom:24px;max-width:760px;margin:0 auto;background:var(--surface-card);border:1px solid var(--hairline-strong);border-radius:var(--r-lg);padding:20px 24px;display:flex;gap:24px;align-items:center;justify-content:space-between;z-index:200;flex-wrap:wrap}
.cookie-banner[hidden]{display:none}
.cookie-text{font-size:14px;color:var(--body);margin:0;flex:1;min-width:240px}
.cookie-actions{display:flex;gap:12px}

@media (max-width:1024px){
  h1{font-size:56px}
  .feature-grid,.articles-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:768px){
  .nav-toggle{display:flex}
  .primary-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}
  .primary-menu.open{display:flex}
  .primary-menu .nav-link{padding:12px 0;width:100%;border-bottom:1px solid var(--hairline-soft)}
  .split{grid-template-columns:1fr;gap:24px}
}
@media (max-width:640px){
  h1{font-size:32px}
  h2{font-size:28px}
  section{padding:48px 0}
  .feature-grid,.articles-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-figure img{height:260px}
}