:root{
 --ink:#111316;--ink2:#181b1f;--paper:#f4f3ef;--white:#fff;--muted:#666c73;
 --line:#d6d4cf;--line-dark:#30343a;--accent:#a3131b;--accent2:#d12832;
 --max:1240px;--serif:Georgia,"Times New Roman",serif;--sans:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.58;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{max-width:100%}.wrap{width:min(calc(100% - 40px),var(--max));margin:auto}.skip{position:fixed;left:16px;top:-80px;background:#fff;padding:10px 14px;z-index:9999}.skip:focus{top:16px}
.site-header{position:sticky;top:0;z-index:900;background:rgba(244,243,239,.96);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.header-inner{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}.identity{display:flex;align-items:center;gap:18px}.identity span{font-size:10px;text-transform:uppercase;letter-spacing:.15em;color:#70757b;border-left:1px solid var(--line);padding-left:18px}.primary-nav{display:flex;align-items:center;gap:22px}.primary-nav a{font-size:12px;font-weight:700;letter-spacing:.015em}.primary-nav a:hover{color:var(--accent)}.corporate-link{border:1px solid var(--ink);padding:10px 12px}.menu{display:none;background:none;border:1px solid var(--ink);width:45px;height:42px;padding:8px}.menu span{display:block;height:1px;background:var(--ink);margin:5px}.menu b{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.hero{padding:110px 0 90px;border-bottom:1px solid var(--line)}.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:85px;align-items:end}.kicker{font-size:11px;text-transform:uppercase;letter-spacing:.18em;font-weight:800;color:var(--accent);margin:0 0 22px}.hero h1{font-family:var(--serif);font-size:clamp(54px,7.6vw,104px);font-weight:400;line-height:.94;letter-spacing:-.055em;margin:0 0 32px}.hero h1 em{font-style:normal;color:var(--accent)}.lead{font-size:clamp(18px,2.1vw,24px);line-height:1.55;color:#3d4248;max-width:840px}.hero-side{border-top:4px solid var(--ink);padding-top:22px}.record-label{font-size:10px;text-transform:uppercase;letter-spacing:.15em;color:var(--muted)}.record-value{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;word-break:break-word}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:35px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 17px;border:1px solid var(--ink);font-size:12px;font-weight:800;letter-spacing:.035em}.button.dark{background:var(--ink);color:white}.button.accent{background:var(--accent);border-color:var(--accent);color:white}.button:hover{transform:translateY(-2px)}
.index-bar{background:var(--ink);color:white}.index-grid{display:grid;grid-template-columns:repeat(4,1fr)}.index-item{padding:25px;border-right:1px solid var(--line-dark)}.index-item:last-child{border-right:0}.index-item b{display:block;font-family:var(--serif);font-size:28px;font-weight:400}.index-item span{color:#aeb2b7;font-size:11px;text-transform:uppercase;letter-spacing:.09em}
.section{padding:100px 0;border-bottom:1px solid var(--line)}.section.dark{background:var(--ink);color:white}.section-head{display:grid;grid-template-columns:.42fr 1fr;gap:65px;margin-bottom:54px}.section-no{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--accent);font-size:12px}.section h2,.page-hero h1{font-family:var(--serif);font-weight:400;letter-spacing:-.035em}.section h2{font-size:clamp(38px,5vw,66px);line-height:1.05;margin:0 0 18px}.section-intro{font-size:18px;color:#5c6269;max-width:770px}.dark .section-intro{color:#b5b9be}
.definition{font-family:var(--serif);font-size:clamp(27px,3.7vw,49px);line-height:1.22;max-width:1100px;margin:0}.definition strong{color:var(--accent);font-weight:400}
.plane-grid{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);background:var(--line);gap:1px}.plane{background:var(--paper);padding:32px;min-height:250px}.dark .plane{background:var(--ink2)}.plane code{font-size:11px;color:var(--accent);font-weight:800}.plane h3{font-family:var(--serif);font-size:27px;font-weight:400;margin:45px 0 10px}.plane p{color:var(--muted);margin:0}.dark .plane p{color:#aeb3b9}
.domain-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.domain{padding:25px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-height:160px}.domain b{display:block;color:var(--accent);font:800 10px ui-monospace,monospace;margin-bottom:32px}.domain h3{font-size:16px;margin:0 0 8px}.domain p{font-size:13px;color:var(--muted);margin:0}
.timeline{border-left:1px solid var(--ink);margin-left:15px}.timeline-entry{position:relative;display:grid;grid-template-columns:150px 1fr;gap:28px;padding:0 0 48px 38px}.timeline-entry:before{content:"";position:absolute;left:-6px;top:7px;width:11px;height:11px;background:var(--accent);border-radius:50%}.timeline-entry time{font:700 12px ui-monospace,monospace;color:var(--accent)}.timeline-entry h3{font-family:var(--serif);font-size:26px;font-weight:400;margin:0 0 7px}.timeline-entry .app{font:700 11px ui-monospace,monospace;letter-spacing:.04em}.timeline-entry p{color:var(--muted);margin:10px 0}.note{border-left:3px solid var(--accent);background:#e9e7e1;padding:20px 22px}.dark .note{background:#20242a}.note h3{font-size:12px;text-transform:uppercase;letter-spacing:.1em;margin:0 0 8px}.note p{margin:0;color:#545a61}.dark .note p{color:#b4b8bd}
.levels{display:grid;gap:0;border-top:1px solid var(--line)}.level{display:grid;grid-template-columns:80px 1fr 1fr;gap:25px;padding:22px 0;border-bottom:1px solid var(--line)}.level b{font:800 12px ui-monospace,monospace;color:var(--accent)}.level h3{margin:0;font-size:16px}.level p{margin:0;color:var(--muted);font-size:14px}
.page-hero{padding:90px 0 70px;border-bottom:1px solid var(--line)}.page-hero-grid{display:grid;grid-template-columns:1fr .5fr;gap:80px}.page-hero h1{font-size:clamp(52px,7vw,90px);line-height:.95;margin:0 0 25px}.page-hero p{font-size:20px;color:#50565d;max-width:800px}.page-meta{border-top:4px solid var(--ink);padding-top:20px}.page-meta dl{margin:0}.page-meta div{padding:10px 0;border-bottom:1px solid var(--line)}.page-meta dt{font-size:9px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted)}.page-meta dd{margin:4px 0 0;font:12px ui-monospace,monospace;word-break:break-word}
.two-col{display:grid;grid-template-columns:.9fr 1.1fr;gap:80px}.prose{max-width:850px}.prose h2{font-family:var(--serif);font-size:38px;font-weight:400;margin:55px 0 15px}.prose h2:first-child{margin-top:0}.prose h3{font-size:17px;margin:30px 0 8px}.prose p,.prose li{color:#4e545b}.prose li{margin:8px 0}.prose code,.hash{font:12px/1.6 ui-monospace,monospace;word-break:break-all}.quote{font-family:var(--serif);font-size:30px;line-height:1.35;border-block:1px solid var(--line);padding:30px 0;margin:45px 0}
.table-wrap{overflow:auto;border:1px solid var(--line)}table{border-collapse:collapse;width:100%;min-width:850px;background:#f8f7f4}th,td{text-align:left;vertical-align:top;padding:16px;border-bottom:1px solid var(--line);border-right:1px solid var(--line)}th{font-size:10px;text-transform:uppercase;letter-spacing:.1em;background:#e7e5df}td{font-size:13px;color:#444a50}td strong{color:var(--ink)}
.diagram{border:1px solid var(--line);padding:30px;background:#faf9f6}.diagram-row{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;align-items:stretch}.diagram-box{border:1px solid var(--ink);padding:18px;min-height:130px}.diagram-box b{display:block;color:var(--accent);font:800 10px ui-monospace,monospace;margin-bottom:30px}.diagram-box h3{font-family:var(--serif);font-weight:400;font-size:22px;margin:0 0 8px}.diagram-box p{font-size:12px;color:var(--muted);margin:0}.arrow{text-align:center;font-size:30px;color:var(--accent);padding:13px 0}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{border:1px solid var(--line);padding:30px;background:#f8f7f4;min-height:235px}.card small{color:var(--accent);font:800 10px ui-monospace,monospace}.card h3{font-family:var(--serif);font-size:26px;font-weight:400;margin:45px 0 10px}.card p{color:var(--muted);margin:0}.card ul{padding-left:18px;color:var(--muted)}
.cta{padding:75px 0;background:var(--accent);color:#fff}.cta-grid{display:grid;grid-template-columns:1fr auto;align-items:center;gap:50px}.cta h2{font-family:var(--serif);font-size:47px;font-weight:400;line-height:1.1;margin:0 0 12px}.cta p{margin:0;color:#f0d7d8}.cta .button{border-color:#fff;background:#fff;color:var(--accent)}
.footer{background:var(--ink);color:white;padding:70px 0 24px}.footer-grid{display:grid;grid-template-columns:1.5fr .7fr .7fr 1fr;gap:55px}.footer h2{font-size:10px;text-transform:uppercase;letter-spacing:.15em;color:#9ea3a9}.footer a,.footer p{display:block;color:#aeb3b9;font-size:12px;margin:0 0 9px}.footer a:hover{color:white}.footer-bottom{display:flex;justify-content:space-between;gap:30px;padding-top:25px;margin-top:55px;border-top:1px solid var(--line-dark)}
.status-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.status-card{border:1px solid var(--line);padding:25px}.status-card b{font:800 10px ui-monospace,monospace;color:var(--accent)}.status-card h3{font-size:17px;margin:25px 0 8px}.status-card p{font-size:13px;color:var(--muted);margin:0}
.filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:25px}.filter-bar button{border:1px solid var(--ink);background:transparent;padding:9px 12px;font:700 11px var(--sans);cursor:pointer}.filter-bar button.active{background:var(--ink);color:white}
.glossary-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}.term{background:var(--paper);padding:28px}.term h3{font-family:var(--serif);font-size:25px;font-weight:400;margin:0 0 10px}.term p{color:var(--muted);margin:0}
@media(max-width:1050px){.primary-nav{display:none;position:absolute;top:78px;left:0;right:0;background:var(--paper);padding:25px;flex-direction:column;align-items:stretch;border-bottom:1px solid var(--line)}.primary-nav.open{display:flex}.menu{display:block}.hero-grid,.page-hero-grid,.two-col,.section-head,.cta-grid{grid-template-columns:1fr}.hero-grid{gap:45px}.plane-grid,.card-grid{grid-template-columns:repeat(2,1fr)}.domain-grid{grid-template-columns:repeat(3,1fr)}.index-grid{grid-template-columns:repeat(2,1fr)}.diagram-row{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:650px){.wrap{width:min(calc(100% - 28px),var(--max))}.identity span{display:none}.hero{padding:75px 0 65px}.hero h1{font-size:53px}.section{padding:72px 0}.plane-grid,.card-grid,.domain-grid,.status-grid,.glossary-grid,.footer-grid{grid-template-columns:1fr}.index-grid{grid-template-columns:1fr}.index-item{border-right:0;border-bottom:1px solid var(--line-dark)}.timeline-entry{grid-template-columns:1fr;padding-left:28px}.level{grid-template-columns:54px 1fr}.level p{grid-column:2}.page-hero{padding:70px 0 55px}.page-hero h1{font-size:51px}.footer-bottom{display:block}.diagram{padding:18px}.cta h2{font-size:38px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button:hover{transform:none}}