:root{
  --bg:#0d0f11; --panel:#14171a; --panel2:#191d21; --text:#f2f1ed; --muted:#9da3aa;
  --line:#2b3035; --line2:#373d43; --gold:#d0a43a; --gold2:#f0c85a; --green:#61d890;
  --max:1180px; --radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit}
::selection{background:var(--gold);color:#111}
.container{width:min(calc(100% - 40px),var(--max));margin:0 auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(13,15,17,.9);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.nav{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{font-weight:800;letter-spacing:-.02em}.brand span{color:var(--gold)}
.nav-links{display:flex;gap:8px;align-items:center}.nav-links a{padding:9px 12px;border-radius:10px;color:var(--muted);font-size:14px}.nav-links a:hover,.nav-links a[aria-current="page"]{background:var(--panel2);color:var(--text)}
.nav-cta{border:1px solid var(--line2)!important;color:var(--text)!important}.nav-cta:hover{border-color:var(--gold)!important}
.menu-btn{display:none;background:transparent;border:1px solid var(--line);color:var(--text);border-radius:10px;padding:8px 11px}
.hero{padding:88px 0 72px;border-bottom:1px solid var(--line)}
.hero-logo-wrap{display:flex;justify-content:center;margin:0 0 34px}
.hero-ping-logo{display:block;width:min(280px,58vw);height:auto;filter:invert(1) grayscale(1) brightness(1.15);mix-blend-mode:screen;opacity:.98}
.hero-name{font-size:clamp(28px,3.2vw,42px);font-weight:800;letter-spacing:-.035em;text-align:center;color:var(--text);margin:-12px 0 24px}


.eyebrow{font:600 12px/1.2 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.14em;text-transform:uppercase;color:var(--gold)}
h1{font-size:clamp(48px,7.2vw,92px);line-height:.95;letter-spacing:-.055em;margin:18px 0 26px;max-width:960px}
.lede{font-size:clamp(18px,2.2vw,25px);max-width:790px;color:#c7cbd0;margin:0}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px}
.btn{display:inline-flex;align-items:center;gap:9px;border:1px solid var(--line2);border-radius:12px;padding:12px 16px;font-weight:650;font-size:14px;background:var(--panel);transition:.2s ease}.btn:hover{border-color:var(--gold);transform:translateY(-1px)}.btn.primary{background:var(--gold);border-color:var(--gold);color:#111}.btn.ghost{background:transparent}
.section{padding:76px 0;border-bottom:1px solid var(--line)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:32px;margin-bottom:30px}.section-head h2{font-size:clamp(32px,4vw,50px);letter-spacing:-.04em;margin:5px 0 0}.section-head p{max-width:560px;color:var(--muted);margin:0}
.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.category{padding:26px;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);min-height:260px;display:flex;flex-direction:column;justify-content:space-between;transition:.22s ease}.category:hover{border-color:#5b4a25;transform:translateY(-3px);background:#171a1d}.category .num{font:600 12px ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--gold);letter-spacing:.1em}.category h3{font-size:28px;line-height:1.05;letter-spacing:-.03em;margin:46px 0 12px}.category p{color:var(--muted);margin:0 0 24px}.arrow{color:var(--gold);font-size:20px}
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:18px}.project-card{grid-column:span 6;border:1px solid var(--line);background:var(--panel);border-radius:var(--radius);overflow:hidden;transition:.22s ease}.project-card:hover{border-color:#544521;transform:translateY(-3px)}.project-card.featured{grid-column:span 12}.card-media{aspect-ratio:16/9;background:#090b0c;overflow:hidden;border-bottom:1px solid var(--line)}.card-media.tall{aspect-ratio:4/3}.card-media img{width:100%;height:100%;object-fit:cover}.card-media.contain img{object-fit:contain;background:#f4f3ef}.card-body{padding:22px}.meta{font:600 11px ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.12em;text-transform:uppercase;color:var(--gold);margin-bottom:9px}.card-body h3{font-size:27px;line-height:1.08;letter-spacing:-.03em;margin:0 0 11px}.card-body p{color:var(--muted);margin:0}.tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.tag{font:600 11px ui-monospace,SFMono-Regular,Menlo,monospace;color:#c9cdd2;border:1px solid var(--line2);padding:6px 8px;border-radius:999px;background:#111417}.card-link{display:flex;justify-content:space-between;align-items:center;margin-top:22px;padding-top:18px;border-top:1px solid var(--line);font-weight:650}.card-link span:last-child{color:var(--gold)}
.case-hero{padding:62px 0 36px}.crumbs{font:600 12px ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--muted);letter-spacing:.08em;text-transform:uppercase}.case-hero h1{font-size:clamp(44px,6vw,76px);margin-bottom:18px}.case-hero .lede{font-size:20px;max-width:820px}.case-image{border:1px solid var(--line);border-radius:20px;overflow:hidden;background:var(--panel);margin-top:36px}.case-image img{width:100%;height:auto}.case-image.contain{padding:16px}.case-image.contain img{object-fit:contain;max-height:900px;margin:auto}
.fact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:24px}.fact{border:1px solid var(--line);background:var(--panel);border-radius:14px;padding:18px}.fact .label{font:600 10px ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--muted);letter-spacing:.12em;text-transform:uppercase}.fact .value{font-size:18px;font-weight:700;margin-top:7px}
.two-col{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:start}.prose h2{font-size:32px;letter-spacing:-.03em;margin:0 0 16px}.prose h3{font-size:18px;margin:30px 0 10px}.prose p,.prose li{color:#bdc2c7}.prose ul{padding-left:20px}.aside{position:sticky;top:94px}.aside-box{border:1px solid var(--line);background:var(--panel);border-radius:16px;padding:20px;margin-bottom:14px}.aside-box h3{font-size:14px;margin:0 0 12px}.aside-box p{color:var(--muted);font-size:14px;margin:0}.stack-list{display:grid;gap:8px}.stack-item{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);font-size:14px}.stack-item:last-child{border-bottom:0}.stack-item span:last-child{color:var(--muted);text-align:right}
.arch{display:grid;grid-template-columns:repeat(5,1fr);gap:9px;align-items:center;margin:28px 0}.arch-node{border:1px solid var(--line2);background:var(--panel);border-radius:12px;padding:14px;text-align:center;font:600 12px ui-monospace,SFMono-Regular,Menlo,monospace}.arch-arrow{text-align:center;color:var(--gold);font-size:20px}
.resource-pages{display:grid;gap:18px}.resource-page{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#efefeb}.resource-page img{width:100%;height:auto}.resource-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.callout{border-left:3px solid var(--gold);background:#15181b;padding:18px 20px;color:#d8dbe0;margin:24px 0;border-radius:0 12px 12px 0}
.footer{padding:42px 0 54px;color:var(--muted)}.footer-inner{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}.footer a:hover{color:var(--text)}
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.92);z-index:100;display:none;align-items:center;justify-content:center;padding:32px}.lightbox.open{display:flex}.lightbox img{max-width:min(1600px,96vw);max-height:92vh;object-fit:contain}.lightbox button{position:absolute;top:20px;right:20px;background:#15181b;border:1px solid var(--line2);color:#fff;border-radius:10px;padding:10px 13px}.zoomable{cursor:zoom-in}
@media(max-width:900px){.category-grid{grid-template-columns:1fr}.grid{grid-template-columns:1fr}.project-card,.project-card.featured{grid-column:auto}.fact-grid{grid-template-columns:repeat(2,1fr)}.two-col{grid-template-columns:1fr}.aside{position:static}.arch{grid-template-columns:1fr}.arch-arrow{transform:rotate(90deg)}.section-head{display:block}.section-head p{margin-top:12px}}
@media(max-width:720px){.container{width:min(calc(100% - 28px),var(--max))}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:#0d0f11;border-bottom:1px solid var(--line);padding:14px}.nav-links.open{display:grid}.menu-btn{display:block}.hero{padding:62px 0 54px}.hero-logo-wrap{margin-bottom:26px}.hero-ping-logo{width:min(230px,68vw)}.hero-name{font-size:30px;margin:-8px 0 20px}.section{padding:58px 0}.fact-grid{grid-template-columns:1fr}.card-body h3{font-size:24px}.resource-page{border-radius:10px}}


/* plain-English section explanations + resource actions */
.plain-english{margin-top:28px;border:1px solid var(--line2);background:linear-gradient(180deg,#171a1d,#121517);border-radius:16px;padding:20px 22px;max-width:900px}
.plain-english .plain-label{font:700 11px ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.12em;text-transform:uppercase;color:var(--gold);margin-bottom:8px}
.plain-english p{margin:0;color:#d7dade;font-size:17px;line-height:1.55}
.category .plain{display:block;margin-top:10px;color:#d9dde1;font-weight:650;font-size:15px;line-height:1.45}
.resource-card{grid-column:span 6;border:1px solid var(--line);background:var(--panel);border-radius:var(--radius);overflow:hidden;transition:.22s ease}.resource-card:hover{border-color:#544521;transform:translateY(-3px)}
.resource-card .card-media{border-bottom:1px solid var(--line)}
.card-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.card-actions .btn{padding:10px 13px}
.card-actions .btn.primary{background:var(--gold);color:#111;border-color:var(--gold)}
.card-actions .btn.secondary{background:transparent}
.doc-status{display:inline-flex;align-items:center;gap:8px;margin-top:14px;font:700 10px ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.1em;text-transform:uppercase;color:var(--green)}
.doc-status::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--green)}
@media(max-width:900px){.resource-card{grid-column:auto}}

/* AI guide collection: three peer resources presented as one clear section */
.guide-grid .guide-card{grid-column:span 6}
.guide-grid .card-media{aspect-ratio:4/5.1;background:#f5f1ea}
.guide-grid .card-media img{object-fit:contain}
.system-card{grid-column:span 12;display:grid;grid-template-columns:minmax(320px,.9fr) minmax(0,1.1fr)}
.system-card .card-media{aspect-ratio:auto;min-height:360px;border-bottom:0;border-right:1px solid var(--line)}
.system-card .card-body{display:flex;flex-direction:column;justify-content:center;padding:34px}
@media(max-width:980px){.guide-grid .guide-card{grid-column:span 6}.system-card{display:block}.system-card .card-media{aspect-ratio:16/9;min-height:0;border-right:0;border-bottom:1px solid var(--line)}}
@media(max-width:700px){.guide-grid .guide-card{grid-column:auto}}

/* homepage ordered portfolio flow */
.quick-paths{display:flex;gap:10px;flex-wrap:wrap;margin-top:34px;padding-top:24px;border-top:1px solid var(--line)}
.quick-paths a{display:inline-flex;align-items:center;gap:9px;padding:9px 12px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:13px}
.quick-paths a:hover{border-color:var(--gold);color:var(--text)}
.quick-paths span{font:700 10px ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--gold)}
.section-action{margin-top:24px}
.flagship-media{aspect-ratio:16/8.3}
@media(max-width:720px){.quick-paths{display:grid}.quick-paths a{justify-content:space-between}.flagship-media{aspect-ratio:16/9}}

/* Full-page AI guide detail views */
.guide-document-section{padding:28px 0 76px}
.guide-document-toolbar{width:min(calc(100% - 40px),1180px);margin:0 auto 18px;display:flex;justify-content:space-between;gap:16px;align-items:center;font:650 13px ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--muted)}
.guide-document-toolbar a:hover{color:var(--gold)}
.guide-document-full{width:min(calc(100% - 40px),1180px);margin:0 auto;background:#f5f1ea;border:1px solid var(--line);border-radius:16px;overflow:hidden}
.guide-document-full img{display:block;width:100%;height:auto}
@media(max-width:720px){.guide-document-section{padding:18px 0 52px}.guide-document-toolbar,.guide-document-full{width:min(calc(100% - 20px),1180px)}.guide-document-toolbar{font-size:11px}.guide-document-full{border-radius:10px}}

/* Compact title-only AI guide index on the homepage */
.guide-title-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.guide-title-card{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:18px;min-height:110px;padding:24px 26px;border:1px solid var(--line);background:var(--panel);border-radius:var(--radius);transition:.22s ease}
.guide-title-card:hover{border-color:#544521;transform:translateY(-2px);background:#15181b}
.guide-title-card .guide-num{font:600 11px ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.12em;color:var(--gold)}
.guide-title-card h3{margin:0;font-size:24px;line-height:1.12;letter-spacing:-.025em}
.guide-title-card .guide-arrow{font-size:24px;color:var(--gold)}
@media(max-width:760px){.guide-title-grid{grid-template-columns:1fr}.guide-title-card{min-height:88px;padding:20px}.guide-title-card h3{font-size:21px}}

/* Education SQL MCP project */
.mcp-project-card{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(320px,.85fr);align-items:stretch}
.mcp-project-card .card-body{display:flex;flex-direction:column;justify-content:center;padding:30px}
.mcp-card-visual{display:grid;grid-template-rows:auto auto;gap:1px;background:var(--line);border-right:1px solid var(--line);min-height:360px}
.mcp-card-visual img{display:block;width:100%;height:100%;object-fit:contain;background:#f5f5f3}
.mcp-card-visual img:first-child{max-height:190px}
.mcp-card-visual img:last-child{min-height:220px}
.mcp-example-grid{display:grid;grid-template-columns:1fr;gap:22px}
.mcp-example .case-image{margin-top:0;background:#f5f5f3}
.mcp-example figure{margin:0}
.mcp-example figcaption{padding:12px 16px;color:var(--muted);background:var(--panel);border-top:1px solid var(--line);font-size:13px}
.prose code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:#e1c36b;background:#121518;border:1px solid var(--line);border-radius:6px;padding:2px 5px}
@media(max-width:900px){.mcp-project-card{display:block}.mcp-card-visual{border-right:0;border-bottom:1px solid var(--line);min-height:0}.mcp-card-visual img:first-child{max-height:none}.mcp-card-visual img:last-child{min-height:0}}

/* Homepage AI documents: one featured visual guide + three compact follow-ons */
.ai-guide-feature{margin-bottom:16px}
.ai-guide-preview{display:grid;grid-template-columns:minmax(300px,.72fr) minmax(0,1.28fr);border:1px solid var(--line);background:var(--panel);border-radius:var(--radius);overflow:hidden;transition:.22s ease}
.ai-guide-preview:hover{border-color:#544521;transform:translateY(-2px)}
.ai-guide-preview-image{background:#f5f1ea;border-right:1px solid var(--line);max-height:520px;overflow:hidden}
.ai-guide-preview-image img{width:100%;height:100%;object-fit:contain}
.ai-guide-preview-copy{padding:34px;display:flex;flex-direction:column;justify-content:center}
.ai-guide-preview-copy h3{font-size:clamp(28px,3vw,40px);line-height:1.05;letter-spacing:-.035em;margin:0 0 14px}
.ai-guide-preview-copy p{color:var(--muted);font-size:17px;margin:0}
.guide-title-grid-three{grid-template-columns:repeat(3,minmax(0,1fr))}
.guide-title-grid-three .guide-title-card{min-height:126px;padding:22px}
.guide-title-grid-three .guide-title-card h3{font-size:21px}
@media(max-width:900px){.ai-guide-preview{grid-template-columns:1fr}.ai-guide-preview-image{border-right:0;border-bottom:1px solid var(--line);max-height:none}.guide-title-grid-three{grid-template-columns:1fr}}
@media(max-width:720px){.ai-guide-preview-copy{padding:24px}.ai-guide-preview-copy h3{font-size:28px}}

/* Wider Education SQL MCP titles */
.featured-project-section .section-head{display:block}
.featured-project-section .section-head h2{font-size:clamp(34px,3.7vw,46px);line-height:1.03;max-width:none}
.featured-project-section .section-head p{max-width:900px;margin-top:16px}
.mcp-case-hero h1{max-width:none;font-size:clamp(38px,4.7vw,60px);line-height:1.02;letter-spacing:-.045em}
@media(max-width:720px){.featured-project-section .section-head h2{font-size:32px}.mcp-case-hero h1{font-size:38px}}

/* Copilot agent + MCP implementation proof */
.agent-card-media{background:#f7f7f5}
.agent-card-media img{object-fit:contain;padding:10px}
.agent-hero-image{background:#f7f7f5}
.agent-hero-image img{max-height:620px}
.mcp-running-image{max-width:980px;margin-left:auto;margin-right:auto;background:#f7f7f5}
.mcp-running-image img{object-fit:contain}
.mcp-running-image figcaption{padding:12px 16px;color:var(--muted);background:var(--panel);border-top:1px solid var(--line);font-size:13px}