:root{--bg:#F5F7FA;--alt:#EAEFF5;--surface:#fff;--ink:#12202E;--muted:#4A5866;--line:#D3DBE5;--navy:#0E2238;--blue:#1B4F9C;--blue-d:#12386F;--amber:#B4531A;--code:#0F1B2A;--f:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;--m:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:72px}
body{margin:0;font:400 17px/1.65 var(--f);color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}a{color:var(--blue)}a:hover{color:var(--blue-d)}
:focus-visible{outline:3px solid #F2A33A;outline-offset:2px;border-radius:2px}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}.narrow{max-width:760px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.skip{position:absolute;left:-999px;top:8px;background:#fff;padding:8px 12px;z-index:100}.skip:focus{left:8px}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .6em;font-weight:600;letter-spacing:-.01em}
h2{font-size:clamp(1.65rem,3vw,2.2rem)}h3{font-size:1.25rem;margin-top:1.8em}h4{font-size:1.02rem;margin-bottom:.3em}
p{margin:0 0 1em;max-width:68ch}.sub{color:var(--muted);font-size:1.08rem;margin-bottom:1.6em}
.note{font-size:.93rem;color:var(--muted);border-left:3px solid var(--line);padding-left:12px}
.placeholder{border-left-color:var(--amber);color:#7A3A10;background:#FFF4EA;padding:10px 12px}
code{font:.88em var(--m);background:#E3EAF3;padding:1px 5px;border-radius:3px}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(14,34,56,.97);color:#fff}
.nav-in{display:flex;align-items:center;justify-content:space-between;min-height:56px}
.brand{color:#fff;text-decoration:none;font-weight:600}
.nav nav{display:flex;gap:4px;flex-wrap:wrap}
.nav nav a{color:#CFDAE8;text-decoration:none;font-size:.9rem;padding:8px 10px;border-radius:4px}
.nav nav a:hover,.nav nav a.on{color:#fff;background:rgba(255,255,255,.12)}
.nav-toggle{display:none;background:none;border:1px solid #6C84A0;color:#fff;border-radius:4px;padding:6px 12px;font:inherit}

/* hero */
.hero{background:var(--navy);color:#fff;padding:72px 0 64px}
.hero-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(2.6rem,6vw,4rem);margin-bottom:.15em}
.role{font-size:1.5rem;margin:0 0 .3em;color:#fff}.stack{color:#9FB6D1;font-size:1.05rem;margin-bottom:1.4em}
.lede{font-size:1.2rem;color:#DCE6F2;max-width:52ch;margin-bottom:1.8em}
.portrait{margin:0;justify-self:end;max-width:340px}
.portrait img{border-radius:6px;border:1px solid #2F4866}
.btns{display:flex;flex-wrap:wrap;gap:12px;margin:0 0 1.2em}
.btn{display:inline-block;padding:11px 20px;border-radius:4px;border:1.5px solid var(--blue);color:var(--blue);text-decoration:none;font-weight:500;background:#fff;cursor:pointer}
.btn:hover{background:#EAF1FB;color:var(--blue-d)}.btn.primary{background:var(--blue);color:#fff}.btn.primary:hover{background:var(--blue-d);color:#fff}
.hero .btn{border-color:#fff;background:transparent;color:#fff}.hero .btn.primary{background:#fff;color:var(--navy)}
.hero .btn:hover{background:rgba(255,255,255,.14);color:#fff}.hero .btn.primary:hover{background:#E5EDF7;color:var(--navy)}
.hero .btn.ghost{border-color:#6C84A0;color:#CFDAE8}
.btn.small{padding:7px 14px;font-size:.92rem}.btn[aria-disabled=true]{opacity:.55;pointer-events:none}

/* skills */
.skills{background:var(--surface);border-bottom:1px solid var(--line);padding:28px 0}
.chips{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0 0 14px}
.chips li{padding:5px 12px;border:1px solid var(--line);border-radius:4px;font-size:.93rem;background:#fff}
.chips.core li{font-weight:600;border-color:var(--blue);color:var(--blue-d);background:#F0F5FC}
.also{font-size:.93rem;color:var(--muted);margin:0;max-width:none}

.feature-intro{padding:64px 0;background:var(--bg)}
.feature-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:48px;align-items:center}
.shot{position:relative;display:block;border:1px solid var(--line);border-radius:6px;overflow:hidden;background:#fff}
.tag,.badge{font-size:.78rem;background:#fff;border:1px solid var(--line);padding:2px 8px;border-radius:3px;color:var(--muted)}
.shot .tag{position:absolute;right:10px;bottom:10px}

/* sections */
.sec{padding:84px 0}.alt{background:var(--alt)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.three{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin:2em 0}
.tick{padding:0;margin:0 0 1em;list-style:none}.tick li{padding:3px 0 3px 22px;position:relative}
.tick li:before{content:"";position:absolute;left:2px;top:.85em;width:8px;height:8px;background:var(--blue);border-radius:1px}

/* pipeline: the featured interaction */
.pipe{display:flex;flex-wrap:wrap;gap:0;margin:1em 0 0;border:1px solid var(--line);border-radius:6px;overflow:hidden;background:#fff}
.pipe button{flex:1 1 140px;font:500 .92rem/1.3 var(--f);padding:16px 12px;border:0;border-right:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;position:relative;text-align:center}
.pipe button:last-child{border-right:0}
.pipe button:hover{background:#F0F5FC}
.pipe button[aria-selected=true]{background:var(--navy);color:#fff}
.pipe button[aria-selected=true]:after{content:"";position:absolute;left:50%;bottom:-8px;transform:translateX(-50%);border:8px solid transparent;border-bottom:0;border-top-color:var(--navy)}
.pipe-panels{background:#fff;border:1px solid var(--line);border-radius:6px;margin-top:12px;padding:22px 26px}
.pipe-panels h4{font-size:1.15rem}.meta{font-size:.92rem;color:var(--muted);margin:0}
.method{margin-top:3em}
.defs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin:0;border-top:1px solid var(--line)}
.defs div{padding:14px 16px 14px 0;border-bottom:1px solid var(--line)}.defs dt{font-weight:600}.defs dd{margin:0;color:var(--muted);font-size:.95rem}

/* case-study blocks */
.cs{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:24px 26px;margin:0 0 20px}
.cs h3{margin-top:0}
.why{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:0 0 16px}
.why dt{font-weight:600;font-size:.93rem;color:var(--blue-d)}.why dd{margin:2px 0 0;font-size:.95rem;color:var(--muted)}
#sql .why{grid-template-columns:1fr}

/* code */
.code{background:var(--code);color:#D6E2F0;border-radius:6px;overflow:hidden;margin:0 0 6px}
.code-h{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;background:#17283D;font:.8rem var(--m);color:#9FB6D1}
.code-h button{font:.8rem var(--m);background:transparent;color:#D6E2F0;border:1px solid #476080;border-radius:3px;padding:3px 10px;cursor:pointer;margin-left:6px}
.code-h button:hover{background:#27405E}
.code pre{margin:0;padding:16px 18px;overflow-x:auto;font:.85rem/1.6 var(--m);tab-size:4}
.code.collapsed pre{max-height:10.5em;overflow-y:hidden;-webkit-mask-image:linear-gradient(#000 70%,transparent);mask-image:linear-gradient(#000 70%,transparent)}
.tk-c{color:#7F93AB}.tk-s{color:#E9B97A}.tk-k{color:#7FB7FF;font-weight:500}.tk-n{color:#9BD3A5}.tk-f{color:#C9A7F0}
.repo{margin-top:12px}

/* dashboard */
.model img,.dash img{border:1px solid var(--line);border-radius:6px;background:#fff}.model{margin:0}.model figcaption{font-size:.85rem;color:var(--muted);margin-top:6px}
.dash-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px}
.dash iframe{width:100%;aspect-ratio:16/9;border:1px solid var(--line);border-radius:6px;background:#fff}

/* kpis & bars */
.kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin:0 0 2em}
.kpi{background:#fff;border:1px solid var(--line);border-top:3px solid var(--blue);padding:16px 18px}
.k-l{display:block;font-size:.88rem;color:var(--muted)}.k-v{display:block;font-size:clamp(1.25rem,2vw,1.6rem);font-weight:600;font-variant-numeric:tabular-nums;color:var(--navy);margin-top:2px}
.bars{display:grid;gap:10px;margin-bottom:1em}
.bar{display:grid;grid-template-columns:150px 1fr 120px;gap:12px;align-items:center;font-size:.93rem}
.bar i{display:block;height:20px;background:#E3EAF3;border-radius:2px;overflow:hidden}.bar b{display:block;height:100%;background:var(--blue)}
.bar.d b{background:var(--amber)}.bar span:last-child{text-align:right;font-variant-numeric:tabular-nums}
.findings{padding-left:1.2em;max-width:76ch}.findings li{margin-bottom:.9em}

/* data quality */
.dq{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:2em}
.dq article{background:#fff;border:1px solid var(--line);padding:20px 22px;border-radius:6px}
.dq h3{font-size:1.05rem;margin:0 0 .4em}.dq p{font-size:.95rem;margin-bottom:.6em}
.big{font-size:2rem!important;font-weight:600;color:var(--navy);margin-bottom:.1em!important;font-variant-numeric:tabular-nums}
.why2{color:var(--blue-d);font-size:.9rem!important;border-top:1px solid var(--line);padding-top:8px;margin:0!important}

/* architecture */
.arch{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:0;align-items:stretch}
.lane{padding:0 18px 0 0;position:relative;display:flex;flex-direction:column;gap:10px}
.lane:not(:last-child):after{content:"";position:absolute;right:4px;top:50%;border:9px solid transparent;border-left:12px solid var(--blue);border-right:0}
.lane-n{font-weight:600;color:var(--blue-d);border-bottom:2px solid var(--blue);padding-bottom:6px;font-size:.95rem}
.node{background:#fff;border:1px solid var(--line);border-radius:4px;padding:16px 14px;font-weight:500;text-align:center;flex:1}
.node.strong{background:var(--navy);color:#fff;border-color:var(--navy)}
.node+.node{position:relative}.node+.node:before{content:"";position:absolute;left:50%;top:-10px;height:10px;border-left:2px solid var(--blue)}

.facts{margin-top:2em;border-top:1px solid var(--line)}.facts div{display:grid;grid-template-columns:140px 1fr;gap:16px;padding:12px 0;border-bottom:1px solid var(--line)}.facts dt{font-weight:600}.facts dd{margin:0;color:var(--muted)}
.pdf{width:100%;height:760px;border:1px solid var(--line);border-radius:6px;background:#fff}
.contact{list-style:none;padding:0;border-top:1px solid var(--line)}.contact li{display:grid;grid-template-columns:120px 1fr;padding:14px 0;border-bottom:1px solid var(--line)}.contact span{font-weight:600}
.foot{background:var(--navy);color:#B5C5D9;padding:26px 0;font-size:.9rem}
.todo{color:#7A3A10;background:#FFF4EA;padding:2px 8px;border-radius:3px;font-size:.9em}

@media (max-width:900px){
 .hero-grid,.feature-grid,.two,.three,.why{grid-template-columns:1fr}.portrait{justify-self:start;max-width:240px;order:-1}
 .kpis,.dq{grid-template-columns:1fr 1fr}.defs{grid-template-columns:1fr 1fr}
 .arch{grid-template-columns:1fr;gap:26px}.lane{padding:0}.lane:not(:last-child):after{display:none}
 .nav-toggle{display:block}.nav nav{display:none;position:absolute;top:56px;left:0;right:0;background:var(--navy);flex-direction:column;padding:8px 24px 16px}.nav nav.open{display:flex}
 .sec{padding:60px 0}.pdf{height:520px}
}
@media (max-width:560px){body{font-size:16px}.kpis,.dq,.defs{grid-template-columns:1fr}.bar{grid-template-columns:1fr 90px}.bar i{grid-column:1/-1;order:3}.pipe button{flex-basis:100%;border-right:0;border-bottom:1px solid var(--line)}.pipe button[aria-selected=true]:after{display:none}.facts div,.contact li{grid-template-columns:1fr;gap:2px}.cs{padding:18px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media print{.nav,.btns{display:none}}
.code code{background:none;padding:0;font:inherit;color:inherit}