: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;
--success:#1f8a65;
--error:#cf2d56;
--tl-thinking:#dfa88f;
--tl-grep:#9fc9a2;
--tl-read:#9fbbe0;
--tl-edit:#c0a8dd;
--tl-done:#c08532;
--sans:"Inter",system-ui,"Helvetica Neue",Helvetica,Arial,sans-serif;
--mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
--r-xs:4px;--r-sm:6px;--r-md:8px;--r-lg:12px;--r-xl:16px;--r-pill:9999px;
--container:1200px;
}
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400&display=swap");
*{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;
}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%}
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}
a{color:var(--ink);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--canvas);padding:8px 16px;border-radius:var(--r-md);z-index:200}
.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{display:flex;align-items:center;justify-content:space-between;height:64px;gap:24px}
.brand{display:flex;align-items:center;gap:10px}
.brand:hover{text-decoration:none}
.brand-mark{width:18px;height:18px;border-radius:50%;border:2px solid var(--ink);position:relative;background:var(--canvas)}
.brand-mark::after{content:"";position:absolute;left:50%;top:1px;width:2px;height:7px;background:var(--primary);transform:translateX(-50%)}
.brand-mark::before{content:"";position:absolute;left:50%;bottom:1px;width:2px;height:7px;background:var(--ink);transform:translateX(-50%)}
.brand-name{font-size:18px;font-weight:600;color:var(--ink);letter-spacing:-0.3px}
.nav-menu{display:flex;align-items:center;gap:24px}
.nav-menu a{font-size:14px;font-weight:500;color:var(--body)}
.nav-menu a: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-family:var(--sans);font-size:14px;font-weight:500;line-height:1;border-radius:var(--r-md);border:1px solid transparent;cursor:pointer;text-decoration:none;transition:background .15s ease}
.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)}
.btn-secondary{background:var(--surface-card);color:var(--ink);border-color:var(--hairline-strong);padding:10px 18px;height:40px}
.btn-download{background:var(--ink);color:var(--canvas);padding:12px 20px;height:44px}
.btn-text{color:var(--ink);padding:10px 4px;height:40px}
.btn-text:hover{text-decoration:underline}

section{padding:80px 0}
.section-label{font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;color:var(--muted);margin:0 0 16px}
.lead{font-size:18px;color:var(--body);max-width:60ch}
.muted{color:var(--muted)}
.meta-line{font-size:13px;color:var(--muted);margin:0 0 24px}

.hero{background:var(--canvas);padding:80px 0 64px}
.hero-grid{display:grid;grid-template-columns:1.1fr 0.9fr;gap:48px;align-items:center}
.hero p.lead{margin-bottom:24px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-figure{border:1px solid var(--hairline);border-radius:var(--r-lg);overflow:hidden;background:var(--surface-card)}
.hero-figure img{width:100%;height:360px;object-fit:cover}
.figure-caption{font-size:13px;color:var(--muted);padding:12px 16px;border-top:1px solid var(--hairline)}

.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;margin-bottom:20px}

.band-soft{background:var(--canvas)}
.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 h4{margin-bottom:8px}
.feature-card p{margin:0;font-size:15px}

.timeline{display:flex;flex-wrap:wrap;gap:10px;margin:8px 0 0}
.tl-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}
.tl-thinking{background:var(--tl-thinking)}
.tl-grep{background:var(--tl-grep)}
.tl-read{background:var(--tl-read)}
.tl-edit{background:var(--tl-edit)}
.tl-done{background:var(--tl-done);color:var(--on-primary)}

.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:180px;object-fit:cover}
.article-card .ac-body{padding:24px;display:flex;flex-direction:column;gap:8px;flex:1}
.article-card h3{font-size:22px;letter-spacing:-0.11px;margin:0}
.article-card p{font-size:15px;margin:0;flex:1}
.article-card .ac-link{font-size:14px;font-weight:500;color:var(--primary)}

.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;white-space:pre;margin:0 0 24px}

.article-main{padding:64px 0}
.article-wrap{max-width:760px;margin:0 auto}
.article-wrap h1{font-size:48px;line-height:1.1;letter-spacing:-1.4px;margin-bottom:12px}
.article-hero{border:1px solid var(--hairline);border-radius:var(--r-lg);overflow:hidden;background:var(--surface-card);margin:24px 0 32px}
.article-hero img{width:100%;height:340px;object-fit:cover}
.article-wrap h2{font-size:30px;letter-spacing:-0.5px;margin:40px 0 12px}
.article-wrap h3{font-size:22px;letter-spacing:-0.11px;margin:28px 0 10px}
.article-wrap p{font-size:17px;color:var(--body)}
.article-wrap ul,.article-wrap ol{color:var(--body);font-size:17px;padding-left:22px;margin:0 0 20px}
.article-wrap li{margin-bottom:8px}
.callout{background:var(--canvas-soft);border:1px solid var(--hairline);border-left:3px solid var(--tl-done);border-radius:var(--r-md);padding:16px 20px;margin:0 0 24px}
.callout h4{margin-bottom:6px}
.callout p{margin:0;font-size:15px}
.fact-table{width:100%;border-collapse:collapse;margin:0 0 24px;font-size:15px}
.fact-table th,.fact-table td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--hairline)}
.fact-table th{color:var(--ink);font-weight:600}
.fact-table td{color:var(--body)}
.related{border-top:1px solid var(--hairline);margin-top:48px;padding-top:32px}
.refs{font-size:14px}
.refs a{color:var(--ink);text-decoration:underline}

.page-head{padding:64px 0 0}
.page-wrap{max-width:760px;margin:0 auto}
.page-wrap h1{font-size:48px;letter-spacing:-1.4px}
.page-wrap h2{font-size:26px;letter-spacing:-0.325px;margin:32px 0 10px}
.page-wrap p,.page-wrap li{font-size:16px;color:var(--body)}
.page-wrap ul{padding-left:22px}

.contact{background:var(--canvas);border-top:1px solid var(--hairline)}
.contact-grid{display:grid;grid-template-columns:0.9fr 1.1fr;gap:48px;align-items:start}
.contact-info p{font-size:15px}
.form-card{background:var(--surface-card);border:1px solid var(--hairline);border-radius:var(--r-lg);padding:32px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:6px}
.field input{width:100%;height:44px;background:var(--surface-card);border:1px solid var(--hairline-strong);border-radius:var(--r-md);padding:12px 16px;font-family:var(--sans);font-size:15px;color:var(--ink)}
.field input:focus{outline:2px solid var(--primary);outline-offset:1px;border-color:var(--primary)}
.field .err{color:var(--error);font-size:13px;margin:6px 0 0;display:none}
.field.invalid .err{display:block}
.field.invalid input{border-color:var(--error)}
.form-status{font-size:15px;font-weight:500;color:var(--success);margin:8px 0 0;min-height:22px}
.btn[disabled]{opacity:.65;cursor:default}

.footer{background:var(--canvas);border-top:1px solid var(--hairline);padding:64px 0 48px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.4fr;gap:32px}
.footer-brand .brand-name{display:block;margin-bottom:12px}
.footer-note{font-size:14px;color:var(--muted);margin:0}
.footer-head{font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;color:var(--muted);margin:0 0 14px}
.footer-link{display:block;font-size:14px;color:var(--body);margin-bottom:10px}
.footer-link:hover{color:var(--ink)}
.footer-bottom{border-top:1px solid var(--hairline);margin-top:40px;padding-top:24px;display:flex;flex-direction:column;gap:8px}
.disclaimer{font-size:13px;color:var(--muted);margin:0}
.copyright{font-size:13px;color:var(--muted-soft);margin:0}

.cookie-banner{position:fixed;left:0;right:0;bottom:0;background:var(--surface-card);border-top:1px solid var(--hairline-strong);z-index:150}
.cookie-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-top:16px;padding-bottom:16px}
.cookie-text{font-size:14px;color:var(--body);margin:0;max-width:70ch}
.cookie-actions{display:flex;gap:12px;flex-shrink:0}

@media(max-width:1024px){
h1{font-size:56px;letter-spacing:-1.6px}
.grid-3{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr 1fr 1fr}
.hero-grid{grid-template-columns:1fr;gap:32px}
.contact-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
.nav-toggle{display:flex}
.nav-menu{display:none;position:absolute;left:0;right:0;top:64px;background:var(--canvas);border-bottom:1px solid var(--hairline);flex-direction:column;align-items:flex-start;gap:0;padding:8px 24px 16px}
.nav-menu.open{display:flex}
.nav-menu a{padding:10px 0;width:100%}
}
@media(max-width:640px){
section{padding:48px 0}
h1{font-size:32px;letter-spacing:-1px}
h2{font-size:28px;letter-spacing:-0.5px}
.grid-3,.grid-2{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr 1fr}
.article-wrap h1,.page-wrap h1{font-size:34px;letter-spacing:-1px}
.cookie-inner{flex-direction:column;align-items:flex-start}
.hero-figure img,.article-hero img{height:240px}
}