: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;
--primary:#f54e00;
--primary-active:#d04200;
--on-primary:#ffffff;
--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,monospace;
--r-xs:4px;--r-sm:6px;--r-md:8px;--r-lg:12px;--r-xl:16px;--r-pill:9999px;
--maxw:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{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(--maxw);margin:0 auto;padding:0 24px}
section{padding:80px 0}
h1,h2,h3{color:var(--ink);font-weight:400}
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}
p{margin-bottom:16px}
a{color:var(--ink);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.section-label{font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;color:var(--muted);margin-bottom:16px}

.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}
.wordmark{font-size:18px;font-weight:600;color:var(--ink);letter-spacing:-0.4px}
.wordmark span{color:var(--primary)}
.nav-menu{display:flex;gap:24px;align-items:center}
.nav-link{font-size:14px;font-weight:500;color:var(--ink)}
.nav-link:hover{color:var(--primary);text-decoration:none}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.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);cursor:pointer;border:1px solid transparent;transition:background .15s,color .15s}
.btn-primary{background:var(--primary);color:var(--on-primary);padding:10px 18px;height:40px}
.btn-primary:hover{background:var(--primary-active);text-decoration:none;color:var(--on-primary)}
.btn-secondary{background:var(--surface-card);color:var(--ink);border-color:var(--hairline-strong);padding:10px 18px;height:40px}
.btn-secondary:hover{background:var(--canvas-soft);text-decoration:none}
.btn-download{background:var(--ink);color:var(--canvas);padding:12px 20px;height:44px}
.btn-download:hover{background:#000;color:var(--canvas);text-decoration:none}
.btn-text{color:var(--ink);text-decoration:underline;background:none;padding:10px 4px}

.hero-band{background:var(--canvas);padding:80px 0 64px}
.hero-inner{max-width:760px}
.hero-band h1{margin-bottom:20px}
.hero-sub{font-size:18px;color:var(--body);max-width:620px;margin-bottom:32px}
.hero-actions{display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.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}
.figure-caption{font-size:13px;line-height:1.4;color:var(--muted);padding:12px 20px;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}

.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.section-head{margin-bottom:48px;max-width:680px}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--body)}

.feature-card{background:var(--surface-card);border:1px solid var(--hairline);border-radius:var(--r-lg);padding:24px}
.feature-card h3{font-size:18px;font-weight:600;margin-bottom:8px}
.feature-card p{font-size:16px;color:var(--body);margin-bottom:0}
.card-link{margin-top:16px;display:inline-block;font-size:14px;font-weight:500;color:var(--primary)}
.card-link:hover{color:var(--primary-active)}

.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 .ac-body{padding:24px;display:flex;flex-direction:column;flex:1}
.article-card h3{font-size:22px;letter-spacing:-0.11px;margin-bottom:8px}
.article-card p{font-size:16px;color:var(--body)}
.ac-meta{font-size:13px;color:var(--muted);margin-top:auto;padding-top:16px}

.timeline{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.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)}

.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;line-height:1.5;color:var(--ink);overflow-x:auto;white-space:pre}

.article-wrap{max-width:760px;margin:0 auto;padding:64px 24px 80px}
.article-head{margin-bottom:32px}
.article-head h1{font-size:48px;line-height:1.1;letter-spacing:-1.4px;margin-bottom:16px}
.article-meta{font-size:13px;color:var(--muted);display:flex;gap:16px;flex-wrap:wrap}
.article-hero{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--hairline);margin-bottom:32px}
.article-hero img{width:100%;height:380px;object-fit:cover}
.article-body h2{font-size:30px;letter-spacing:-0.6px;margin:40px 0 12px}
.article-body h3{font-size:22px;letter-spacing:-0.11px;margin:28px 0 10px}
.article-body p{color:var(--body);margin-bottom:16px}
.article-body ul,.article-body ol{margin:0 0 16px 22px;color:var(--body)}
.article-body li{margin-bottom:8px}
.callout{background:var(--canvas-soft);border:1px solid var(--hairline);border-left:3px solid var(--primary);border-radius:var(--r-md);padding:16px 20px;margin:24px 0}
.callout strong{color:var(--ink)}
.spec-table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px}
.spec-table th,.spec-table td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--hairline)}
.spec-table th{color:var(--ink);font-weight:600;background:var(--canvas-soft)}
.spec-table td{color:var(--body)}
.ref-list{list-style:none;margin-left:0}
.ref-list li{padding:8px 0;border-bottom:1px solid var(--hairline-soft);font-size:14px}
.related{margin-top:48px;padding-top:32px;border-top:1px solid var(--hairline)}
.related h3{font-size:18px;font-weight:600;margin-bottom:16px}

.contact-band{background:var(--canvas-soft);border-top:1px solid var(--hairline);border-bottom:1px solid var(--hairline)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.form-field{margin-bottom:16px;display:flex;flex-direction:column}
.form-field label{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:6px}
.text-input{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}
.text-input:focus{outline:none;border-color:var(--primary)}
.form-note{font-size:13px;color:var(--muted);margin-top:4px}
.form-status{margin-top:8px;font-size:14px;font-weight:500;min-height:20px}
.form-status.success{color:var(--success)}
.btn[disabled]{opacity:.6;cursor:not-allowed}
.contact-info p{font-size:16px;color:var(--body)}
.contact-info strong{color:var(--ink)}

.page-wrap{max-width:760px;margin:0 auto;padding:64px 24px 80px}
.page-wrap h1{font-size:48px;line-height:1.1;letter-spacing:-1.4px;margin-bottom:16px}
.page-wrap h2{font-size:26px;margin:32px 0 10px}
.page-wrap p,.page-wrap li{color:var(--body)}
.page-wrap ul{margin:0 0 16px 22px}
.updated{font-size:13px;color:var(--muted);margin-bottom:32px}

.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;gap:32px}
.footer-tagline{font-size:14px;color:var(--body);margin-top:12px;max-width:320px}
.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:10px}
.footer-link:hover{color:var(--ink)}
.footer-base{margin-top:48px;padding-top:24px;border-top:1px solid var(--hairline)}
.footer-fine{font-size:13px;color:var(--muted-soft);margin-bottom:6px}

.cookie-banner{position:fixed;left:0;right:0;bottom:0;background:var(--surface-card);border-top:1px solid var(--hairline-strong);z-index:60}
.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-bottom:0;max-width:760px}
.cookie-actions{display:flex;gap:12px;flex-shrink:0}

@media(max-width:1024px){
.footer-grid{grid-template-columns:1fr 1fr}
.grid-3{grid-template-columns:1fr 1fr}
h1{font-size:56px;letter-spacing:-1.6px}
}
@media(max-width:768px){
.nav-toggle{display:flex}
.nav-menu{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;gap:0;background:var(--canvas);border-bottom:1px solid var(--hairline);padding:8px 24px}
.nav-menu.open{display:flex}
.nav-menu .nav-link{padding:12px 0;border-bottom:1px solid var(--hairline-soft)}
.contact-grid{grid-template-columns:1fr;gap:32px}
.cookie-inner{flex-direction:column;align-items:flex-start}
}
@media(max-width:640px){
h1{font-size:32px;letter-spacing:-0.8px}
h2{font-size:28px;letter-spacing:-0.5px}
section{padding:56px 0}
.grid-3,.grid-2,.footer-grid{grid-template-columns:1fr}
.hero-figure img{height:240px}
.article-head h1,.page-wrap h1{font-size:34px;letter-spacing:-0.8px}
}