:root{
  --ink:#143f38;--ink-2:#245d50;--muted:#5f6d66;--paper:#fafbf6;--tint:#eef2e8;--line:#dfe5db;
  --lime:#d1edb6;--leaf:#6c885c;--accent:#7fb484;--warn:#e0a458;
  --serif:'Source Serif 4',Georgia,serif;--sans:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
button{font:inherit;cursor:pointer}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:4px;border-radius:4px}
img,svg{display:block}
.container{max-width:1200px;width:calc(100% - 96px);margin-inline:auto}
.serif{font-family:var(--serif);font-style:italic;font-weight:400;color:var(--leaf)}
.eyebrow{display:flex;align-items:center;gap:9px;font-size:11px;font-weight:600;letter-spacing:1.8px;color:#4f6b5f}
.status-dot{width:7px;height:7px;border-radius:50%;background:var(--accent);flex-shrink:0}
.skip-link{position:fixed;top:-100px;left:20px;z-index:20;background:var(--ink);color:#fff;padding:12px}
.skip-link:focus{top:10px}

/* Buttons & links */
.button{display:inline-flex;align-items:center;justify-content:center;gap:18px;min-height:50px;padding:13px 22px;background:var(--ink);color:#fff;border:1px solid var(--ink);border-radius:8px;font-size:14px;font-weight:600;transition:background .2s,transform .2s}
.button:hover{background:var(--ink-2);transform:translateY(-2px)}
.button span{font-size:18px}
.button-small{min-height:40px;padding:8px 16px;font-size:13px;gap:12px}
.button-light{background:var(--lime);border-color:var(--lime);color:var(--ink)}
.button-light:hover{background:#e0f3cd}
.text-link{display:inline-flex;align-items:center;gap:10px;font-size:14px;font-weight:600}
.text-link:hover{text-decoration:underline;text-underline-offset:4px}
.inline-link{text-decoration:underline;text-underline-offset:3px}

/* Header */
.header{position:sticky;top:0;z-index:10;background:rgba(250,251,246,.9);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{max-width:1296px;margin:auto;height:76px;padding:0 48px;display:flex;align-items:center;gap:32px}
.brand{display:inline-flex;align-items:center;gap:9px;font-size:22px;font-weight:700;letter-spacing:-1px}
.brand b{font-weight:400}
.brand em{font-style:normal;font-size:11px;font-weight:600;letter-spacing:1.6px;text-transform:uppercase;background:var(--ink);color:var(--lime);padding:3px 8px;border-radius:5px;margin-left:2px}
.header nav{display:flex;gap:28px;font-size:14px;margin-left:auto}
.header nav a:hover{color:var(--leaf)}
.menu-toggle{display:none}


/* IntentSea family bar + footer (shared across intentsea.com, search, vision, lab) */
.family-bar{background:var(--ink);color:#c9dccd;font-size:12px}
.family-inner{max-width:1296px;margin:auto;padding:0 48px;height:34px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.family-label{letter-spacing:1.4px;font-weight:600;font-size:10px;text-transform:uppercase;color:#8fb09c}
.family-bar nav{display:flex;gap:22px}
.family-bar nav a{color:#c9dccd;display:inline-flex;align-items:center;gap:6px}
.family-bar nav a:hover{color:#fff}
.family-bar nav a[aria-current="page"]{color:var(--lime);font-weight:600}
.family-bar nav a[aria-current="page"]:before{content:'';width:5px;height:5px;border-radius:50%;background:var(--lime)}
.site-footer{border-top:1px solid var(--line);padding-block:48px 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer-grid .brand{font-size:19px}
.footer-about{color:var(--muted);font-size:13px;margin-top:12px;max-width:300px;line-height:1.7}
.footer-col{display:flex;flex-direction:column;gap:8px;font-size:13px}
.footer-col a:hover{text-decoration:underline;text-underline-offset:3px}
.footer-title{font-size:10px;letter-spacing:1.5px;font-weight:600;text-transform:uppercase;color:#7d8f74;margin-bottom:4px}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;border-top:1px solid var(--line);margin-top:36px;padding-top:20px;font-size:12px;color:#7a877f}
@media(max-width:860px){.family-inner{padding-inline:32px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}}
@media(max-width:640px){.family-inner{padding-inline:16px}.family-label{display:none}.family-bar nav{gap:0;justify-content:space-between;width:100%}.footer-grid{grid-template-columns:1fr 1fr;gap:28px 20px}}

/* ---------- Lab ---------- */
:root{--mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;--c-research:#3f6fb5;--c-product:#4f8a5b;--c-engineering:#a2672b;--c-news:#7a5aa8}
h2{font-size:clamp(28px,3vw,40px)}
.section{padding-block:84px}
.section-tint{background:var(--tint);border-block:1px solid #e2e7dd}
.section-head{max-width:720px;margin-bottom:40px}
.section-head p{color:var(--muted);margin-top:16px}
.section-head.split{max-width:none;display:flex;justify-content:space-between;align-items:end;gap:32px;flex-wrap:wrap}

.lab-hero{position:relative;border-bottom:1px solid var(--line);background:
  linear-gradient(#7590690d 1px,transparent 1px) 0 0/28px 28px,
  linear-gradient(90deg,#7590690d 1px,transparent 1px) 0 0/28px 28px,#f3f6ee;overflow:hidden}
.lab-hero:after{content:'';position:absolute;right:-160px;top:-120px;width:520px;height:520px;border:1px solid #b7c8ac66;border-radius:50%;box-shadow:0 0 0 70px #b7c8ac14,0 0 0 140px #b7c8ac0d;pointer-events:none}
.lab-hero-inner{position:relative;z-index:1;padding-block:88px 84px;max-width:1200px}
.lab-hero h1{font-size:clamp(38px,5vw,66px);font-weight:600;letter-spacing:-2.2px;line-height:1.08;margin-top:22px;max-width:820px}
.lab-hero p{color:var(--muted);font-size:17px;margin-top:22px;max-width:640px}
.hero-actions{display:flex;align-items:center;gap:26px;margin-top:30px;flex-wrap:wrap}

.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{border:1px solid #c7d4bd;background:#fff;color:var(--ink);border-radius:20px;padding:6px 14px;font-size:13px}
.chip:hover{border-color:var(--ink)}
.chip[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:var(--lime)}

.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.post-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 24px;transition:transform .2s,box-shadow .2s;position:relative}
.post-card:hover{transform:translateY(-3px);box-shadow:0 18px 36px #24463810}
.post-card h3{font-size:20px;font-weight:600;letter-spacing:-.4px;line-height:1.3;margin-top:14px}
.post-card h3 a:after{content:'';position:absolute;inset:0;border-radius:14px}
.post-card p{color:var(--muted);font-size:14px;margin-top:10px;flex:1}
.post-card .text-link{margin-top:18px;font-size:13px}
.post-card.featured{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;column-gap:48px;padding:40px;background:var(--ink);border-color:var(--ink);color:#f0f5e8}
.post-card.featured .post-meta{grid-column:1/-1}
.post-card.featured h3{font-size:clamp(26px,3vw,38px);letter-spacing:-1px;grid-column:1;margin-top:18px}
.post-card.featured p{grid-column:2;grid-row:2/span 2;color:#bcd0c2;font-size:16px;margin-top:22px}
.post-card.featured .text-link{grid-column:1;color:var(--lime)}
.post-card.featured time{color:#a4bbac}
.post-meta{display:flex;align-items:center;flex-wrap:wrap;gap:8px 14px;font-size:12px;color:var(--muted)}
.cat{display:inline-flex;align-items:center;gap:7px;font-weight:600;letter-spacing:1px;text-transform:uppercase;font-size:11px;color:var(--ink)}
.cat:before{content:'';width:8px;height:8px;border-radius:2px;background:currentColor}
.cat-research{color:var(--c-research)}.cat-product{color:var(--c-product)}.cat-engineering{color:var(--c-engineering)}.cat-news{color:var(--c-news)}
.featured .cat{color:var(--lime)}
.status-pill{display:inline-block;font-size:11px;border:1px solid #c7d4bd;border-radius:20px;padding:2px 10px;color:#4f6b5f;background:#f4f7f0;white-space:nowrap}
.featured .status-pill{background:transparent;border-color:#4f7366;color:#c9dccd}
.empty{color:var(--muted);padding:24px 0}

.product-list{display:grid;gap:14px}
.product-row{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:24px;background:var(--paper);border:1px solid #dbe2d4;border-radius:14px;padding:24px 28px}
.product-row h3{font-size:20px;font-weight:600}
.product-row p{color:var(--muted);font-size:14px;margin-top:4px;max-width:720px}
.row-link{display:grid;place-items:center;width:42px;height:42px;border:1px solid #bacaad;border-radius:50%;font-size:18px}
.row-link:hover{background:var(--ink);color:var(--lime);border-color:var(--ink)}

.about-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:64px;align-items:start}
.about-points{display:grid;gap:26px}
.about-points article{border-top:1px solid var(--line);padding-top:20px;display:grid;grid-template-columns:48px 1fr;column-gap:8px}
.about-points span{grid-row:1/span 2;font-family:var(--mono);font-size:13px;color:#7d8f74}
.about-points h3{font-size:18px;font-weight:600}
.about-points p{color:var(--muted);font-size:14px;margin-top:6px}

.cta-band{background:var(--ink);color:#f0f5e8;padding-block:56px}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-band h2{margin:0;font-size:clamp(26px,2.8vw,36px)}
.cta-band p{color:#b4c9ba;margin-top:8px}

/* Post page */
.post{max-width:760px;padding-block:56px 72px}
.back-link{font-size:13px;font-weight:600;color:#4f6b5f}
.back-link:hover{text-decoration:underline}
.post-header{border-bottom:1px solid var(--line);padding-bottom:32px;margin-bottom:36px}
.post-header .post-meta{margin-top:28px}
.post-header h1{font-size:clamp(32px,4.4vw,50px);font-weight:600;letter-spacing:-1.6px;line-height:1.12;margin-top:16px}
.post-summary{font-size:19px;color:var(--muted);margin-top:18px;line-height:1.6}
.post-author{font-size:13px;font-weight:600;margin-top:18px}
.draft-banner{background:#fbe9c8;color:#6a4a12;border-radius:8px;padding:10px 14px;font-size:13px;margin-bottom:20px}
.prose{font-family:var(--serif);font-size:19px;line-height:1.75;color:#1c3a34}
.prose>*+*{margin-top:1.1em}
.prose h2,.prose h3{font-family:var(--sans);letter-spacing:-.5px;line-height:1.3;margin-top:1.8em;color:var(--ink)}
.prose h2{font-size:26px;font-weight:600}
.prose h3{font-size:20px;font-weight:600}
.prose a{color:#2f6c5c;text-decoration:underline;text-underline-offset:3px}
.prose strong{font-weight:600}
.prose ul,.prose ol{padding-left:1.3em}
.prose ul{list-style:disc}
.prose ol{list-style:decimal}
.prose li+li{margin-top:.4em}
.prose li::marker{color:var(--accent)}
.prose blockquote{margin:1.4em 0;padding:14px 20px;border-left:3px solid var(--accent);background:#eef3e8;border-radius:0 8px 8px 0;font-family:var(--sans);font-size:16px}
.prose blockquote>*+*{margin-top:.6em}
.prose code{font-family:var(--mono);font-size:.82em;background:#eef2e8;padding:2px 6px;border-radius:4px}
.prose pre{background:var(--ink);color:#e4f2d6;border-radius:10px;padding:18px 20px;overflow-x:auto;font-size:14px;line-height:1.6}
.prose pre code{background:none;padding:0;font-size:inherit;color:inherit}
.prose table{width:100%;border-collapse:collapse;font-family:var(--sans);font-size:15px;display:block;overflow-x:auto}
.prose th,.prose td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.prose th{font-size:12px;letter-spacing:1px;text-transform:uppercase;color:#4f6b5f}
.prose img{max-width:100%;height:auto;border-radius:10px;border:1px solid var(--line)}
.post-footer{margin-top:48px;border-top:1px solid var(--line);padding-top:24px;font-size:14px;color:var(--muted)}
.post-footer a{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.tags span{font-size:12px;border:1px solid var(--line);border-radius:20px;padding:2px 10px;background:#fff}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.post-nav a{display:block;border:1px solid var(--line);border-radius:12px;padding:16px 18px;text-decoration:none;color:var(--ink);font-weight:600;font-size:15px;line-height:1.4}
.post-nav a:hover{border-color:var(--ink)}
.post-nav a.next{text-align:right;grid-column:2}
.post-nav small{display:block;font-size:11px;letter-spacing:1px;text-transform:uppercase;color:#7d8f74;font-weight:600;margin-bottom:6px}
.not-found{max-width:640px}
.not-found h1{font-size:clamp(32px,4vw,48px);font-weight:600;letter-spacing:-1.4px;margin:18px 0 14px}
.not-found p{color:var(--muted);margin-bottom:28px}

/* Responsive */
@media(max-width:1100px){
  .container{width:calc(100% - 64px)}
  .header-inner{padding-inline:32px;gap:24px}
  .post-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:860px){
  .header nav{display:none;position:absolute;top:75px;left:0;right:0;background:var(--paper);padding:20px 24px 24px;border-bottom:1px solid var(--line);box-shadow:0 12px 20px #143f380d;flex-direction:column;gap:16px;font-size:15px}
  .header nav.is-open{display:flex}
  .header-cta{margin-left:auto}
  .menu-toggle{display:flex;flex-direction:column;justify-content:center;align-items:center;gap:6px;width:36px;height:36px;background:none;border:0;order:3}
  .menu-toggle span{width:22px;height:1.5px;background:var(--ink);transition:transform .2s}
  .menu-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.75px) rotate(45deg)}
  .menu-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.75px) rotate(-45deg)}
  .post-card.featured{display:flex;padding:30px}
  .about-grid{grid-template-columns:1fr;gap:28px}
}
@media(max-width:640px){
  body{font-size:14px}
  .container{width:calc(100% - 32px)}
  .header-inner{padding-inline:16px;height:66px;gap:12px}
  .header nav{top:65px}
  .brand{font-size:19px;gap:7px}
  .brand img{width:28px;height:28px}
  .brand em{font-size:9px;padding:2px 6px}
  .header-cta{font-size:12px;min-height:36px;padding:6px 12px;gap:6px}
  .lab-hero-inner{padding-block:56px}
  .lab-hero h1{letter-spacing:-1.4px}
  .lab-hero p{font-size:15px}
  .section{padding-block:60px}
  .post-grid{grid-template-columns:1fr}
  .post-card.featured{padding:26px 22px}
  .product-row{grid-template-columns:1fr auto;padding:20px}
  .product-row>div{grid-column:1/-1}
  .prose{font-size:17px}
  .post-summary{font-size:17px}
  .post-nav{grid-template-columns:1fr}
  .post-nav a.next{grid-column:1;text-align:left}
}
@media(max-width:380px){.header-cta span{display:none}.brand em{display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}