:root{
--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;
--primary:#f54e00;--primary-active:#d04200;
--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;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--canvas);color:var(--body);font-family:'Inter',system-ui,'Helvetica Neue',Helvetica,Arial,sans-serif;letter-spacing:-0.15px;line-height:1.5;-webkit-font-smoothing:antialiased}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
h1,h2,h3,h4{color:var(--ink);font-weight:400;line-height:1.2}
h1{font-size:72px;letter-spacing:-2.16px;line-height:1.1}
h2{font-size:36px;letter-spacing:-0.72px}
h3{font-size:26px;letter-spacing:-0.325px;line-height:1.25}
h4{font-size:18px;font-weight:600;letter-spacing:0}
p{font-size:16px;color:var(--body)}
a{color:var(--ink);text-decoration:none}
section{padding:80px 0}
.eyebrow{display:inline-block;font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;color:var(--muted)}
.lead{font-size:16px;color:var(--body);max-width:60ch}

.top-nav{background:var(--canvas);border-bottom:1px solid var(--hairline);position:sticky;top:0;z-index:50}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-size:18px;font-weight:600;color:var(--ink);letter-spacing:-0.4px}
.brand span{color:var(--primary)}
.nav-menu{display:flex;gap:24px;align-items:center}
.nav-menu a{font-size:14px;font-weight:500;color:var(--ink)}
.nav-menu a:hover{color:var(--primary)}
.nav-toggle{display:none;flex-direction:column;gap:4px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:20px;height:2px;background:var(--ink);display:block}

.hero-band{background:var(--canvas);padding:80px 0 64px}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.hero-band h1{margin:16px 0}
.hero-band .lead{margin-bottom:24px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-media{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--hairline)}
.hero-media img{width:100%;height:100%;object-fit:cover;display:block;aspect-ratio:4/3}

.btn-download{display:inline-flex;align-items:center;height:44px;padding:12px 20px;background:var(--ink);color:var(--canvas);border-radius:var(--r-md);font-size:14px;font-weight:500;border:0;cursor:pointer}
.btn-primary{display:inline-flex;align-items:center;height:40px;padding:10px 18px;background:var(--primary);color:var(--on-primary);border-radius:var(--r-md);font-size:14px;font-weight:500;border:0;cursor:pointer}
.btn-primary:hover,.btn-primary:active{background:var(--primary-active)}
.btn-secondary{display:inline-flex;align-items:center;height:40px;padding:10px 18px;background:var(--surface-card);color:var(--ink);border:1px solid var(--hairline-strong);border-radius:var(--r-md);font-size:14px;font-weight:500;cursor:pointer}
.btn-text{display:inline-flex;align-items:center;color:var(--ink);font-size:14px;font-weight:500;border-bottom:1px solid var(--hairline-strong);padding-bottom:2px}

.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}

.section-head{max-width:720px;margin-bottom:32px}
.section-head h2{margin:12px 0}

.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:var(--r-lg);padding:24px}
.feature-card h3{font-size:22px;letter-spacing:-0.11px;margin-bottom:8px}
.feature-card p{font-size:16px}

.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%;aspect-ratio:16/10;object-fit:cover;display:block}
.article-card .body{padding:24px;display:flex;flex-direction:column;gap:8px}
.article-card h3{font-size:22px;letter-spacing:-0.11px}
.article-card .meta{font-size:13px;color:var(--muted)}

.timeline{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.pill{font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;color:var(--ink);border-radius:var(--r-pill);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:var(--r-lg);padding:20px;font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--ink);line-height:1.5;overflow-x:auto;white-space:pre}

.article-wrap{max-width:760px;margin:0 auto}
.article-hero{aspect-ratio:16/9;width:100%;object-fit:cover;border-radius:var(--r-lg);border:1px solid var(--hairline);margin:24px 0}
.article-body h2{font-size:36px;margin:48px 0 16px}
.article-body h3{margin:32px 0 12px}
.article-body p{margin-bottom:16px;letter-spacing:0.08px}
.article-body ul,.article-body ol{margin:0 0 16px 20px}
.article-body li{margin-bottom:8px;color:var(--body)}
.callout{background:var(--canvas-soft);border:1px solid var(--hairline);border-left:3px solid var(--primary);border-radius:var(--r-md);padding:20px;margin:24px 0}
.callout h4{margin-bottom:8px}
.fig{margin:24px 0}
.fig img{width:100%;border-radius:var(--r-lg);border:1px solid var(--hairline);display:block}
.fig figcaption{font-size:13px;color:var(--muted);margin-top:8px}
.update-date{font-size:13px;color:var(--muted);border-bottom:1px solid var(--hairline);padding-bottom:16px;margin-bottom:24px}
.references{margin-top:48px;border-top:1px solid var(--hairline);padding-top:24px}
.references h4{margin-bottom:12px}
.references li{font-size:14px;color:var(--body);margin-bottom:8px}
.references a{color:var(--primary);border-bottom:1px solid var(--hairline-strong)}
.related{display:flex;gap:16px;flex-wrap:wrap;margin-top:24px}
.related a{font-size:14px;font-weight:500;color:var(--ink);border:1px solid var(--hairline-strong);border-radius:var(--r-md);padding:8px 14px}

.contact-band{background:var(--canvas)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.form-card{background:var(--surface-card);border:1px solid var(--hairline);border-radius:var(--r-lg);padding:32px}
.field{margin-bottom:16px;display:flex;flex-direction:column;gap:6px}
.field label{font-size:14px;font-weight:600;color:var(--ink)}
.field input{height:44px;padding:12px 16px;background:var(--surface-card);border:1px solid var(--hairline-strong);border-radius:var(--r-md);font-size:16px;color:var(--ink);font-family:inherit}
.field input:focus{outline:none;border-color:var(--ink)}
.field input.invalid{border-color:var(--error)}
.form-error{font-size:13px;color:var(--error);min-height:1px}
.form-status{font-size:14px;color:var(--success);margin-top:12px;min-height:18px}

.cta-band{background:var(--canvas);text-align:center;padding:96px 0}
.cta-band h2{margin-bottom:24px}

.footer{background:var(--canvas);border-top:1px solid var(--hairline);padding:64px 0 32px;color:var(--body)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px}
.footer-col h4{font-size:14px;margin-bottom:12px;color:var(--ink)}
.footer-link{display:block;font-size:14px;color:var(--body);margin-bottom:8px}
.footer-link:hover{color:var(--ink)}
.footer-note{font-size:14px;margin-top:12px;max-width:32ch}
.footer-bottom{border-top:1px solid var(--hairline);margin-top:32px;padding-top:24px}
.footer-bottom p{font-size:13px;color:var(--muted)}

.cookie-banner{position:fixed;left:24px;right:24px;bottom:24px;max-width:520px;margin:0 auto;background:var(--surface-card);border:1px solid var(--hairline-strong);border-radius:var(--r-lg);padding:24px;z-index:100;display:none}
.cookie-banner.show{display:block}
.cookie-banner p{font-size:14px;margin-bottom:16px}
.cookie-banner a{color:var(--primary);border-bottom:1px solid var(--hairline-strong)}
.cookie-actions{display:flex;gap:12px}

.page-body{max-width:760px;margin:0 auto}
.page-body h2{margin:32px 0 12px}
.page-body p{margin-bottom:16px}
.page-body ul{margin:0 0 16px 20px}
.page-body li{margin-bottom:8px}

@media (max-width:1024px){
h1{font-size:56px;letter-spacing:-1.2px}
.grid-3{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
.nav-toggle{display:flex}
.nav-menu{display:none;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-menu.open{display:flex}
.hero-grid,.contact-grid{grid-template-columns:1fr}
.grid-3,.grid-2{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr 1fr}
section{padding:56px 0}
}
@media (max-width:640px){
h1{font-size:32px;letter-spacing:-0.6px}
h2{font-size:28px}
.footer-grid{grid-template-columns:1fr}
}