/* Applied AI Labs · site.css · design system: Technical & Minimal, blue */
@font-face{font-family:"Geist";src:url("https://ejq1h2abx82ahjmx.public.blob.vercel-storage.com/aal/fonts/Geist-Variable.woff2") format("woff2");font-weight:100 900;font-style:normal;font-display:swap}
@font-face{font-family:"IBM Plex Mono";src:url("https://ejq1h2abx82ahjmx.public.blob.vercel-storage.com/aal/fonts/IBMPlexMono-Regular.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"IBM Plex Mono";src:url("https://ejq1h2abx82ahjmx.public.blob.vercel-storage.com/aal/fonts/IBMPlexMono-Medium.woff2") format("woff2");font-weight:500;font-style:normal;font-display:swap}

:root{
  --bg:#ffffff;--bg-subtle:#f7f9fa;--inverse:#0b0f14;
  --text:#0b0f14;--muted:#4a5468;--subtle:#667085;--inv-text:#ffffff;--inv-muted:#a7b0c0;
  --border:#d9dee7;--border-strong:#8c95a6;--border-inv:#2a313b;
  --primary:#3563ff;--primary-hover:#1f4fe0;--on-primary:#ffffff;--primary-light:#bfd3ff;
  --sans:"Geist",system-ui,-apple-system,"Segoe UI",sans-serif;--mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  --r-sm:8px;--r-md:14px;--r-lg:20px;--r-full:999px;
  --shadow-soft:0 8px 24px rgba(11,15,20,.08);--shadow-medium:0 16px 40px rgba(11,15,20,.12);
  --gutter:120px;--section:96px;--max:1200px;
}
@media (max-width:1100px){:root{--gutter:48px;--section:72px}}
@media (max-width:640px){:root{--gutter:16px;--section:56px}}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--sans);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;line-height:1.5;font-size:16px}
img{display:block;max-width:100%;height:auto}
a{color:var(--primary)}a:hover{color:var(--primary-hover)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:var(--r-sm)}
h1,h2,h3,p,ul{margin:0}
ul{padding:0;list-style:none}
strong{font-weight:600}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

.wrap{max-width:var(--max);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}
.section{padding-top:var(--section);padding-bottom:var(--section)}
.band{background:var(--bg-subtle);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}

/* type */
.eyebrow{font-size:12px;line-height:1.4;font-weight:500;letter-spacing:.2em;text-transform:uppercase;color:var(--primary)}
.mono{font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:var(--subtle)}
.mono.blue{color:var(--primary)}
.display{font-size:clamp(38px,5.2vw,64px);line-height:1.02;font-weight:600;letter-spacing:-.02em}
.h2{font-size:clamp(28px,3.2vw,36px);line-height:1.15;font-weight:600;letter-spacing:-.01em}
.h3{font-size:20px;line-height:1.3;font-weight:600}
.lead{font-size:18px;line-height:1.55;color:var(--muted)}
.body{font-size:16px;line-height:1.5;color:var(--muted)}
.small{font-size:14px;line-height:1.45;color:var(--muted)}
.accent{color:var(--primary)}
.muted{color:var(--muted)}.subtle{color:var(--subtle)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;min-height:44px;border-radius:var(--r-sm);font:inherit;font-size:16px;font-weight:500;line-height:1.25;text-decoration:none;cursor:pointer;border:1px solid transparent;transition:background .18s ease,border-color .18s ease,color .18s ease,box-shadow .18s ease}
.btn-primary{background:var(--primary);color:var(--on-primary);border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover);color:var(--on-primary)}
.btn-secondary{background:var(--bg);color:var(--text);border-color:var(--border-strong)}
.btn-secondary:hover{border-color:var(--text);color:var(--text)}
.btn-dark{background:var(--inverse);color:var(--inv-text);border-color:var(--inverse)}
.btn-dark:hover{background:#1c232d;color:var(--inv-text)}
.btn-sm{padding:8px 16px;font-size:14px;min-height:40px}
.btn svg{width:18px;height:18px;flex:none}
.ic{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.ic-lg{width:24px;height:24px}

.badge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:var(--r-full);font-size:12px;font-weight:500;line-height:1.4;letter-spacing:.02em;border:1px solid var(--border-strong);color:var(--text);background:var(--bg)}
.badge-filled{background:var(--primary-light);border-color:var(--primary-light)}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--border)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.nav .logo img{height:30px;width:auto}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{font-size:14px;color:var(--muted);text-decoration:none;font-weight:500}
.nav-links a:hover{color:var(--text)}
.nav-links a.btn-dark,.nav-links a.btn-dark:hover{color:var(--inv-text)}
.nav-links a.btn-primary,.nav-links a.btn-primary:hover{color:var(--on-primary)}
.nav-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;background:none;border:1px solid var(--border);border-radius:var(--r-sm);cursor:pointer;color:var(--text)}
@media (max-width:900px){
  .nav-links{display:none;position:absolute;left:0;right:0;top:72px;flex-direction:column;align-items:stretch;gap:0;background:var(--bg);border-bottom:1px solid var(--border);padding:8px var(--gutter) 16px}
  .nav-links.open{display:flex}
  .nav-links a{padding:14px 0;border-top:1px solid var(--border);font-size:16px}
  .nav-links .btn{margin-top:12px;justify-content:center;border-top:0}
  .nav-toggle{display:inline-flex}
}

/* hero */
.hero{padding-top:88px;padding-bottom:48px}
.hero-grid{display:grid;grid-template-columns:2fr 1fr;gap:48px;align-items:end}
.hero h1{max-width:14em;margin-top:24px}
.hero .lead{max-width:32em;margin:24px 0 32px}
.hero-ctas{display:flex;gap:12px;flex-wrap:wrap}
.hero-proof{display:flex;flex-direction:column;gap:14px;padding-left:32px;border-left:1px solid var(--border)}
.hero-proof li{display:flex;gap:10px;align-items:flex-start;font-size:14px;line-height:1.45;color:var(--muted)}
.hero-proof .ic{color:var(--primary);margin-top:1px}
@media (max-width:900px){.hero{padding-top:56px}.hero-grid{grid-template-columns:1fr;gap:40px}.hero-proof{padding-left:0;border-left:0;padding-top:24px;border-top:1px solid var(--border)}}

.hero-photo{padding-bottom:var(--section)}
.hero-photo figure{margin:0;display:flex;flex-direction:column;gap:12px}
.hero-photo img{width:100%;height:560px;object-fit:cover;object-position:center 40%;border-radius:var(--r-lg)}
.hero-photo figcaption{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
@media (max-width:900px){.hero-photo img{height:360px}}
@media (max-width:640px){.hero-photo img{height:240px;border-radius:var(--r-md)}}

/* generic grids */
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:16px}
.span-4{grid-column:span 4}.span-5{grid-column:span 5}.span-7{grid-column:span 7}.span-8{grid-column:span 8}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
@media (max-width:900px){.span-4,.span-5,.span-7,.span-8{grid-column:span 12}.grid-3{grid-template-columns:1fr}.grid-2{grid-template-columns:1fr}}

.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:48px;margin-bottom:48px}
.section-head .h2{max-width:680px;margin-top:20px}
.section-head .body{max-width:400px}
@media (max-width:900px){.section-head{flex-direction:column;align-items:flex-start;gap:20px;margin-bottom:36px}}

.card{background:var(--bg);border:1px solid var(--border);border-radius:var(--r-md);padding:24px;transition:box-shadow .18s ease,border-color .18s ease}
.card.hl{border-color:var(--primary)}
.card.soft{border-color:var(--primary-light)}

/* AI Act */
.act-copy{display:flex;flex-direction:column;gap:20px;padding-right:32px}
.act-cards{display:flex;flex-direction:column;gap:16px}
.num-card{display:flex;gap:24px}
.num-card .idx{font-family:var(--mono);font-size:13px;line-height:26px;color:var(--subtle);flex:none}
.num-card.soft .idx{color:var(--primary)}
.num-card .h3{margin-bottom:6px}
@media (max-width:900px){.act-copy{padding-right:0;margin-bottom:32px}}

/* tracks */
.track{display:flex;flex-direction:column;gap:16px;padding:28px}
.track-top{display:flex;justify-content:space-between;align-items:center;gap:12px}
.track .idx{font-family:var(--mono);font-size:13px;color:var(--subtle)}
.track.hl .idx{color:var(--primary)}
.track h3{font-size:22px;line-height:1.25;font-weight:600;margin-top:8px}
.track .desc{font-size:15px;line-height:1.5;color:var(--muted)}
.track ul{display:flex;flex-direction:column;gap:8px;margin-top:4px}
.track li{display:flex;gap:10px;font-size:14px;line-height:1.45;color:var(--muted)}
.track li::before{content:"\2014";color:var(--primary);flex:none}
.track-foot{display:flex;gap:16px;flex-wrap:wrap;margin-top:auto;padding-top:16px;border-top:1px solid var(--border)}
.track-foot span{font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.08em;color:var(--muted)}
.bar{display:grid;grid-template-columns:3fr 9fr;gap:16px;align-items:center;padding:24px 28px;border-radius:var(--r-md);margin-top:16px}
.bar.grey{background:var(--bg-subtle);border:1px solid var(--border)}
.bar.blue{border:1px solid var(--primary);background:var(--bg)}
.bar p{font-size:15px;line-height:1.5;color:var(--muted)}
.bar.blue p{font-size:17px;color:var(--text)}
@media (max-width:900px){.bar{grid-template-columns:1fr;gap:10px}}

/* deliverables */
.deliv{align-items:center}
.deliv-copy{display:flex;flex-direction:column;gap:20px;padding-right:32px}
.deliv-copy ul{display:flex;flex-direction:column;gap:12px;margin-top:8px}
.deliv-copy li{display:flex;gap:12px;align-items:flex-start;font-size:16px;line-height:1.5}
.deliv-copy .ic{color:var(--primary);margin-top:2px}
.doc-stack{position:relative;width:560px;max-width:100%;height:600px;margin:0 auto}
.doc-stack .sheet{position:absolute;width:320px;height:520px;background:var(--bg);border:1px solid var(--border);border-radius:8px;box-shadow:var(--shadow-soft)}
.doc-stack .s1{left:240px;top:0}.doc-stack .s2{left:210px;top:24px}
.doc-stack .front{left:180px;top:48px;border-color:var(--border-strong);box-shadow:var(--shadow-medium);padding:28px;display:flex;flex-direction:column;gap:12px}
.doc-stack .front .row{display:flex;justify-content:space-between;align-items:center}
.doc-stack .front img{height:22px;width:auto}
.doc-stack hr{border:0;border-top:1px solid var(--border);margin:0;width:100%}
.doc-stack .title{font-size:17px;line-height:1.3;font-weight:600}
.doc-stack .sub{font-size:12px;line-height:1.45;color:var(--muted)}
.doc-stack .stats{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:6px}
.doc-stack .stat{padding:10px 12px;border:1px solid var(--border);border-radius:6px}
.doc-stack .stat .k{font-family:var(--mono);font-size:10px;letter-spacing:.08em;color:var(--subtle);text-transform:uppercase}
.doc-stack .stat .v{font-size:18px;font-weight:600;margin-top:2px}
.doc-stack .checks{display:flex;flex-direction:column;gap:7px;margin-top:6px}
.doc-stack .checks div{display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}
.doc-stack .checks span:last-child{color:var(--primary)}
.doc-stack .foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;padding-top:12px;border-top:1px solid var(--border)}
.doc-stack .cert{position:absolute;left:0;bottom:0;width:196px;padding:16px 18px;background:var(--bg);border:1px solid var(--border);border-radius:8px;box-shadow:var(--shadow-soft);display:flex;flex-direction:column;gap:6px}
.doc-stack .cert .n{font-size:13px;font-weight:600;line-height:1.3}
.doc-stack .cert .d{font-size:11px;line-height:1.4;color:var(--muted)}
@media (max-width:1100px){.doc-stack{transform:scale(.85);transform-origin:top left;height:520px}}
@media (max-width:900px){.deliv-copy{padding-right:0;margin-bottom:24px}.doc-stack{transform:none;height:600px;margin:0}}
@media (max-width:640px){
  .doc-stack{width:100%;height:auto;transform:none}
  .doc-stack .s1,.doc-stack .s2,.doc-stack .cert{display:none}
  .doc-stack .front{position:static;width:100%;max-width:360px;height:auto;margin:0 auto}
}

/* how */
.steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:32px;row-gap:40px;padding-right:32px}
.step{display:flex;flex-direction:column;gap:12px;padding-top:20px;border-top:2px solid var(--inverse)}
.step.first{border-top-color:var(--primary)}
.step .k{font-family:var(--mono);font-size:13px;font-weight:500;letter-spacing:.08em;color:var(--subtle)}
.step.first .k{color:var(--primary)}
.step p{font-size:14px;line-height:1.45;color:var(--muted)}
.how-img{width:100%;height:420px;object-fit:cover;border-radius:var(--r-md)}
@media (max-width:900px){.steps{padding-right:0;margin-bottom:24px}.how-img{height:300px}}
@media (max-width:640px){.steps{grid-template-columns:1fr;row-gap:28px}}

/* team */
.founder{display:grid;grid-template-columns:200px 1fr;gap:28px;padding:32px}
.founder-photo{width:200px;height:250px;object-fit:cover;object-position:center top;border-radius:var(--r-md);display:block}
.founder-photo-wrap{display:flex;flex-direction:column;gap:10px}
.founder-photo-wrap .cap{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:var(--subtle);line-height:1.4;max-width:200px}
@media (max-width:640px){.founder-photo{width:100%;height:auto;aspect-ratio:4/5}.founder-photo-wrap .cap{max-width:none}}
.founder-copy{display:flex;flex-direction:column;gap:14px}
.founder-copy h3{font-size:26px;line-height:1.2;font-weight:600;letter-spacing:-.01em}
.founder-copy p{font-size:14px;line-height:1.55;color:var(--muted)}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:4px}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:500;color:var(--text);text-decoration:none;margin-top:4px}
.link-arrow .ic{width:16px;height:16px}
.link-arrow:hover{color:var(--primary)}
.network{display:flex;flex-direction:column;gap:20px;padding:32px;align-self:start}
.network p{font-size:15px;line-height:1.55;color:var(--muted)}
.role{display:grid;grid-template-columns:44px 1fr;gap:16px;padding:16px 0;border-top:1px solid var(--border);align-items:start}
.role .ic{width:24px;height:24px;color:var(--text);margin-top:2px}
.role .t{font-size:16px;font-weight:600;line-height:1.3}
.role .d{font-size:13px;line-height:1.45;color:var(--muted);margin-top:4px}
.principles{margin-top:48px}
.principle{display:flex;flex-direction:column;gap:10px;padding:24px 24px 0 0;border-top:1px solid var(--border)}
.principle .h3{font-size:18px}
.principle p{font-size:14px;line-height:1.45;color:var(--muted)}
@media (max-width:640px){.founder{grid-template-columns:1fr;padding:24px}.network{padding:24px}}

/* next steps */
.next-copy{display:flex;flex-direction:column;gap:20px;padding-right:32px}
.service{display:flex;flex-direction:column;gap:16px;padding:24px;min-height:220px}
.service .top{display:flex;justify-content:space-between;align-items:center}
.service .tile{width:44px;height:44px;border-radius:10px;background:var(--bg-subtle);border:1px solid var(--border);display:flex;align-items:center;justify-content:center}
.service .tile .ic{width:22px;height:22px}
.service .idx{font-family:var(--mono);font-size:13px;color:var(--subtle)}
.service p{font-size:14px;line-height:1.5;color:var(--muted);flex-grow:1}
@media (max-width:900px){.next-copy{padding-right:0;margin-bottom:24px}}

/* photo strip */
.strip{padding-bottom:var(--section)}
.strip figure{margin:0;display:flex;flex-direction:column;gap:12px}
.strip img{width:100%;height:380px;object-fit:cover;border-radius:var(--r-md)}
.strip .wide{grid-column:span 6}.strip .narrow{grid-column:span 3}
@media (max-width:900px){.strip .wide,.strip .narrow{grid-column:span 12}.strip img{height:260px}.strip .narrow{grid-column:span 6}}
@media (max-width:640px){.strip .narrow{grid-column:span 12}}

/* dark band */
.dark{padding-bottom:var(--section)}
.dark-box{display:grid;grid-template-columns:4fr 8fr;gap:16px;padding:48px;background:var(--inverse);color:var(--inv-text);border-radius:var(--r-md)}
.dark-box .lead-dark{font-size:24px;line-height:1.3;font-weight:500;letter-spacing:-.01em}
.dark-box .lead-dark span{color:var(--inv-muted)}
.dark-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
.dark-list div{display:flex;flex-direction:column;gap:8px;padding-left:20px;border-left:1px solid var(--border-inv)}
.dark-list .k{font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.08em;color:var(--inv-muted)}
.dark-list p{font-size:16px;line-height:1.5}
@media (max-width:900px){.dark-box{grid-template-columns:1fr;padding:32px}.dark-list{grid-template-columns:1fr;gap:20px}}

/* faq */
.faq-copy{display:flex;flex-direction:column;gap:20px;padding-right:32px}
.faq-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:32px}
.faq-list details{border-top:1px solid var(--border);padding:4px 0 8px}
.faq-list summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:flex-start;padding:16px 0 12px;font-size:17px;line-height:1.35;font-weight:600}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary .ic{width:18px;height:18px;flex:none;color:var(--subtle);margin-top:3px;transition:transform .18s ease}
.faq-list details[open] summary .ic{transform:rotate(45deg)}
.faq-list details p{font-size:14px;line-height:1.5;color:var(--muted);padding-bottom:12px}
@media (max-width:900px){.faq-copy{padding-right:0;margin-bottom:24px}.faq-list{grid-template-columns:1fr}}

/* contact */
.contact-box{display:grid;grid-template-columns:7fr 5fr;gap:16px;padding:56px;border:1px solid var(--border);border-radius:var(--r-lg)}
.contact-main{display:flex;flex-direction:column;gap:20px;padding-right:48px;border-right:1px solid var(--border)}
.contact-main .h2{font-size:clamp(30px,3.5vw,44px);line-height:1.1;letter-spacing:-.02em}
.contact-side{display:flex;flex-direction:column;justify-content:center;gap:16px;padding-left:32px}
.form{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:8px}
.form .full{grid-column:1/-1}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;font-weight:500;color:var(--text)}
.field input,.field textarea,.field select{font:inherit;font-size:15px;padding:11px 14px;min-height:44px;border:1px solid var(--border-strong);border-radius:var(--r-sm);background:var(--bg);color:var(--text);width:100%}
.field textarea{min-height:110px;resize:vertical}
.field input:focus,.field textarea:focus,.field select:focus{outline:2px solid var(--primary);outline-offset:1px;border-color:var(--primary)}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13px;line-height:1.45;color:var(--muted)}
.check input{width:18px;height:18px;margin-top:2px;flex:none;accent-color:var(--primary)}
.form-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.form-note{font-size:13px;color:var(--subtle)}
.form-msg{font-size:14px;line-height:1.45;padding:12px 14px;border-radius:var(--r-sm);display:none}
.form-msg.ok{display:block;background:var(--primary-light);color:var(--text)}
.form-msg.err{display:block;background:#fde8e8;color:#8a1c1c}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.inline-form{display:flex;gap:10px}
.inline-form input{flex:1}
@media (max-width:900px){.contact-box{grid-template-columns:1fr;padding:32px 24px}.contact-main{padding-right:0;border-right:0;padding-bottom:28px;border-bottom:1px solid var(--border)}.contact-side{padding-left:0;padding-top:28px}.form{grid-template-columns:1fr}.inline-form{flex-direction:column}}

/* footer */
.footer{background:var(--bg-subtle);border-top:1px solid var(--border);padding:64px 0 40px}
.footer-grid{display:grid;grid-template-columns:5fr 2fr 2fr 3fr;gap:16px}
.footer .brand{display:flex;flex-direction:column;gap:16px}
.footer .brand img{height:32px;width:auto}
.footer .brand p{max-width:320px;font-size:14px;line-height:1.45;color:var(--muted)}
.footer .col{display:flex;flex-direction:column;gap:10px;font-size:14px;line-height:1.45}
.footer .col a{color:var(--muted);text-decoration:none}
.footer .col a:hover{color:var(--text)}
.footer .col a.strong{color:var(--text);font-weight:500}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-top:48px;padding-top:24px;border-top:1px solid var(--border);font-size:13px;line-height:1.45;color:var(--subtle)}
.footer-bottom a{color:var(--subtle);text-decoration:none;margin-left:24px}
.footer-bottom a:hover{color:var(--text)}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}.footer .brand{grid-column:1/-1}}
@media (max-width:640px){.footer-grid{grid-template-columns:1fr}.footer-bottom a{margin-left:0;margin-right:20px}}

/* legal / article pages */
.article{max-width:760px;margin:0 auto;padding-top:64px;padding-bottom:var(--section)}
.article .eyebrow{margin-bottom:16px}
.article h1{font-size:clamp(32px,4vw,44px);line-height:1.1;font-weight:600;letter-spacing:-.02em;margin-bottom:12px}
.article .meta{font-size:14px;color:var(--subtle);margin-bottom:40px}
.article h2{font-size:22px;line-height:1.3;font-weight:600;margin:40px 0 12px;padding-top:24px;border-top:1px solid var(--border)}
.article h3{font-size:17px;line-height:1.35;font-weight:600;margin:20px 0 8px}
.article p,.article li{font-size:16px;line-height:1.6;color:var(--muted)}
.article p{margin-bottom:12px}
.article ul{list-style:disc;padding-left:22px;margin-bottom:12px}
.article ol{padding-left:22px;margin:0 0 12px}
.article li{margin-bottom:6px}
.article table{width:100%;border-collapse:collapse;font-size:14px;margin:12px 0 20px}
.article th,.article td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border);vertical-align:top;color:var(--muted)}
.article th{color:var(--text);font-weight:600;border-bottom-color:var(--border-strong)}
.article .note{padding:16px 20px;background:var(--bg-subtle);border:1px solid var(--border);border-radius:var(--r-md);font-size:14px;color:var(--muted);margin:20px 0}
.checklist{counter-reset:q;display:flex;flex-direction:column;gap:0;margin-top:24px}
.checklist li{list-style:none;display:grid;grid-template-columns:48px 1fr;gap:16px;padding:20px 0;border-top:1px solid var(--border)}
.checklist li::before{counter-increment:q;content:counter(q,decimal-leading-zero);font-family:var(--mono);font-size:13px;font-weight:500;letter-spacing:.08em;color:var(--primary);padding-top:3px}
.checklist .q{font-size:17px;font-weight:600;line-height:1.35;color:var(--text);margin-bottom:6px}
.checklist .w{font-size:14px;line-height:1.5;color:var(--muted)}
.center{text-align:center}

/* real photo hero + diagram (v4) */
.hero-photo img{object-position:right 40%}
.diagram-wrap{display:flex;align-items:center;justify-content:center;min-height:420px;padding:24px;background:var(--bg-subtle);border:1px solid var(--border);border-radius:var(--r-md)}
.diagram{width:100%;max-width:560px;height:auto;display:block}
.diagram .pl{fill:var(--bg);stroke:var(--border);stroke-width:1.5}
.diagram .ps{fill:var(--bg-subtle);stroke:var(--border);stroke-width:1.5}
.diagram .pl-a{fill:var(--primary-light);stroke:var(--primary);stroke-width:1.5}
.diagram .ps-a{fill:var(--primary);stroke:var(--primary);stroke-width:1.5}
.diagram .ll{stroke:var(--border-strong);stroke-width:1;stroke-dasharray:3 3}
.diagram .gl{stroke:var(--border);stroke-width:1}
.diagram .dt{fill:var(--primary)}
.diagram .lb{font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.08em;fill:var(--muted)}
.diagram .lb-hi{fill:var(--primary)}
.strip .half{grid-column:span 6}
@media (max-width:900px){.diagram-wrap{min-height:0}.strip .half{grid-column:span 12}}