@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400&display=swap');

: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;
--tl-thinking:#dfa88f;
--tl-grep:#9fc9a2;
--tl-read:#9fbbe0;
--tl-edit:#c0a8dd;
--tl-done:#c08532;
--success:#1f8a65;
--error:#cf2d56;
--maxw:1200px;
--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,monospace;
}

*{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;
}
img{max-width:100%;height:auto;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;}
.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;}

h1,h2,h3{font-weight:400;color:var(--ink);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;}
p{margin:0 0 16px;}

.section-label{display:inline-block;font-size:11px;font-weight:600;line-height:1.4;letter-spacing:0.88px;text-transform:uppercase;color:var(--muted);margin-bottom:12px;}

.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;}
.wordmark{font-size:18px;font-weight:600;color:var(--ink);letter-spacing:-0.3px;}
.wordmark:hover{text-decoration:none;}
.wordmark-amp{color:var(--primary);}
.nav-menu{display:flex;align-items:center;gap:24px;}
.nav-link{font-size:14px;font-weight:500;color:var(--ink);}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px;}
.nav-toggle span{width:22px;height:2px;background:var(--ink);display:block;}

.button-primary{display:inline-flex;align-items:center;justify-content:center;background:var(--primary);color:var(--on-primary);font-family:var(--sans);font-size:14px;font-weight:500;line-height:1;padding:10px 18px;height:40px;border:0;border-radius:var(--r-md);cursor:pointer;}
.button-primary:hover{background:var(--primary-active);text-decoration:none;}
.button-secondary{display:inline-flex;align-items:center;justify-content:center;background:var(--surface-card);color:var(--ink);font-family:var(--sans);font-size:14px;font-weight:500;line-height:1;padding:10px 18px;height:40px;border:1px solid var(--hairline-strong);border-radius:var(--r-md);cursor:pointer;}
.button-secondary:hover{text-decoration:none;border-color:var(--ink);}
.button-download{display:inline-flex;align-items:center;justify-content:center;background:var(--ink);color:var(--canvas);font-size:14px;font-weight:500;line-height:1;padding:12px 20px;height:44px;border:0;border-radius:var(--r-md);cursor:pointer;}
.button-download:hover{text-decoration:none;}

.hero-band{padding:80px 0;border-bottom:1px solid var(--hairline);}
.hero-grid{display:grid;grid-template-columns:1.05fr 0.95fr;gap:48px;align-items:center;}
.hero-copy h1{margin-bottom:20px;}
.hero-sub{font-size:16px;color:var(--body);max-width:34em;margin-bottom:24px;}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center;}
.hero-meta{margin-top:24px;font-size:13px;color:var(--muted);}
.hero-figure{border:1px solid var(--hairline);border-radius:var(--r-lg);overflow:hidden;background:var(--surface-card);}
.hero-figure img{width:100%;aspect-ratio:4/3;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;border-bottom:1px solid var(--hairline);}
.section-head{max-width:46em;margin-bottom:32px;}
.section-head p{color:var(--body);}

.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.feature-card{background:var(--surface-card);border:1px solid var(--hairline);border-radius:var(--r-lg);padding:24px;color:var(--ink);}
.feature-card h3{font-size:22px;letter-spacing:-0.11px;margin-bottom:8px;}
.feature-card p{color:var(--body);font-size:16px;}

.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.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:3/2;object-fit:cover;border-bottom:1px solid var(--hairline-soft);}
.article-card-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{color:var(--body);font-size:16px;margin:0;flex:1;}
.article-card .read{font-size:14px;font-weight:500;color:var(--primary);}

.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;}

.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;}
.step-pill{border-radius:var(--r-lg);padding:16px;color:var(--ink);}
.step-pill .step-label{display:inline-block;font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;border-radius:var(--r-pill);padding:4px 10px;margin-bottom:8px;}
.step-pill p{font-size:14px;margin:0;color:var(--ink);}
.s-thinking .step-label{background:var(--tl-thinking);}
.s-grep .step-label{background:var(--tl-grep);}
.s-read .step-label{background:var(--tl-read);}
.s-edit .step-label{background:var(--tl-edit);}
.s-done .step-label{background:var(--tl-done);color:var(--on-primary);}
.step-pill{background:var(--surface-card);border:1px solid var(--hairline);}

.article{padding:80px 0;}
.article-wrap{max-width:760px;margin:0 auto;}
.article-hero{margin:0 0 32px;border:1px solid var(--hairline);border-radius:var(--r-lg);overflow:hidden;background:var(--surface-card);}
.article-hero img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.article-hero figcaption{font-size:13px;color:var(--muted);padding:12px 16px;border-top:1px solid var(--hairline-soft);}
.article-meta{font-size:13px;color:var(--muted);margin-bottom:8px;}
.article-wrap h1{font-size:48px;line-height:1.1;letter-spacing:-1.2px;margin-bottom:16px;}
.article-wrap h2{font-size:30px;letter-spacing:-0.6px;margin-top:40px;}
.article-wrap h3{font-size:22px;letter-spacing:-0.11px;margin-top:28px;}
.lead{font-size:18px;color:var(--ink);}
.article-wrap p{color:var(--body);}
.article-wrap ul,.article-wrap ol{color:var(--body);padding-left:20px;margin:0 0 16px;}
.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:20px;margin:24px 0;}
.callout h3{margin-top:0;font-size:18px;font-weight:600;}
.callout p:last-child{margin-bottom:0;}

.materials-table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.materials-table caption{text-align:left;font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;color:var(--muted);padding-bottom:12px;}
.materials-table th,.materials-table td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--hairline);}
.materials-table thead th{font-weight:600;color:var(--ink);border-bottom:1px solid var(--hairline-strong);}
.materials-table td{color:var(--body);}

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

.sources{background:var(--canvas-soft);border:1px solid var(--hairline);border-radius:var(--r-lg);padding:24px;margin:40px 0 0;}
.sources h2{font-size:22px;letter-spacing:-0.11px;margin-bottom:12px;}
.sources ul{list-style:none;padding:0;margin:0;}
.sources li{padding:8px 0;border-bottom:1px solid var(--hairline-soft);font-size:15px;}
.sources li:last-child{border-bottom:0;}

.article-nav{display:flex;justify-content:space-between;gap:16px;margin-top:48px;padding-top:24px;border-top:1px solid var(--hairline);font-size:14px;font-weight:500;flex-wrap:wrap;}

.contact-band{background:var(--canvas);}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
.contact-info p{color:var(--body);}
.contact-detail{font-size:15px;margin:0 0 8px;}
.contact-detail strong{color:var(--ink);font-weight:600;}

.form-card{background:var(--surface-card);border:1px solid var(--hairline);border-radius:var(--r-lg);padding:32px;}
.form-row{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);font-family:var(--sans);font-size:16px;border:1px solid var(--hairline-strong);border-radius:var(--r-md);padding:12px 16px;height:44px;}
textarea.text-input{height:auto;min-height:120px;resize:vertical;}
.text-input:focus{outline:2px solid var(--primary);outline-offset:1px;border-color:var(--primary);}
.form-status{font-size:14px;margin-top:12px;min-height:20px;}
.form-status.success{color:var(--success);}
.form-status.error-text{color:var(--error);}
.field-error{color:var(--error);font-size:13px;margin-top:4px;display:none;}
.form-row.invalid .field-error{display:block;}
.form-row.invalid .text-input{border-color:var(--error);}

.cta-band{background:var(--canvas);text-align:center;padding:96px 0;border-bottom:1px solid var(--hairline);}
.cta-band h2{font-size:36px;letter-spacing:-0.72px;}
.cta-band p{color:var(--body);max-width:40em;margin:0 auto 24px;}

.footer{background:var(--canvas);color:var(--body);padding:64px 0 48px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;}
.footer-note{font-size:14px;color:var(--body);max-width:28em;margin-top:12px;}
.footer-heading{font-size:11px;font-weight:600;letter-spacing:0.88px;text-transform:uppercase;color:var(--muted);margin-bottom:12px;}
.footer-link{display:block;font-size:14px;color:var(--body);padding:4px 0;}
.footer-base{margin-top:32px;padding-top:24px;border-top:1px solid var(--hairline);}
.footer-disclaimer{font-size:13px;color:var(--muted);}
.footer-copy{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:62ch;}
.cookie-actions{display:flex;gap:12px;flex-shrink:0;}

.page-head{padding:80px 0 40px;border-bottom:1px solid var(--hairline);}
.page-body{padding:48px 0 80px;}
.page-body .container{max-width:760px;}
.page-body h2{font-size:26px;letter-spacing:-0.325px;margin-top:32px;}
.page-body p,.page-body li{color:var(--body);}
.page-body ul{padding-left:20px;}

@media (max-width:1024px){
h1{font-size:56px;letter-spacing:-1.4px;}
.hero-grid{grid-template-columns:1fr;gap:32px;}
.card-grid,.article-grid{grid-template-columns:repeat(2,1fr);}
.steps{grid-template-columns:repeat(2,1fr);}
.footer-grid{grid-template-columns:repeat(2,1fr);}
.contact-grid{grid-template-columns:1fr;}
}
@media (max-width:768px){
.nav-toggle{display:flex;}
.nav-menu{display:none;position:absolute;top:64px;left:0;right:0;background:var(--canvas);border-bottom:1px solid var(--hairline);flex-direction:column;gap:0;padding:8px 24px 16px;}
.nav-menu.open{display:flex;}
.nav-menu .nav-link{padding:10px 0;border-bottom:1px solid var(--hairline-soft);}
}
@media (max-width:640px){
h1{font-size:32px;letter-spacing:-0.6px;}
.article-wrap h1{font-size:32px;letter-spacing:-0.6px;}
h2,.cta-band h2{font-size:28px;letter-spacing:-0.5px;}
.card-grid,.article-grid,.steps,.footer-grid{grid-template-columns:1fr;}
.section,.hero-band{padding:48px 0;}
.cookie-inner{flex-direction:column;align-items:flex-start;}
.cookie-actions{width:100%;}
.cookie-actions .button-primary,.cookie-actions .button-secondary{flex:1;}
}