:root{
  --paper:#F6F8FB;
  --paper-2:#EDF1F7;
  --ink:#0E1A2E;
  --ink-soft:#3A4A63;
  --steel:#7686A0;
  --line:#D8DFEA;
  --cobalt:#1E4FDB;
  --cobalt-soft:#E6ECFC;
  --amber:#E8A33D;
  --radius:14px;
  --font-display:"Archivo",sans-serif;
  --font-body:"IBM Plex Sans",sans-serif;
  --font-mono:"IBM Plex Mono",monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  background:var(--paper);
  color:var(--ink);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
::selection{background:var(--cobalt);color:#fff}
a{color:inherit;text-decoration:none}
.wrap{max-width:1240px;margin:0 auto;padding:0 24px}

/* ---------- eyebrow ---------- */
.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--cobalt);display:inline-flex;align-items:center;gap:10px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--cobalt);display:inline-block}

/* ---------- nav ---------- */
nav{
  position:fixed;inset:0 0 auto 0;z-index:100;
  padding:16px 0;transition:background .35s,box-shadow .35s,padding .35s;
}
nav.scrolled{background:rgba(246,248,251,.9);backdrop-filter:blur(12px);box-shadow:0 1px 0 var(--line);padding:11px 0}
nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{font-family:var(--font-mono);font-weight:500;font-size:15px;letter-spacing:.04em;flex:none}
.logo b{color:var(--cobalt);font-weight:500}
.nav-links{display:flex;gap:24px;align-items:center;font-size:14px;font-weight:500}
.nav-links > a:not(.btn){color:var(--ink-soft);transition:color .2s}
.nav-links > a:not(.btn):hover{color:var(--cobalt)}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--cobalt);color:#fff;font-weight:600;font-size:14px;
  padding:11px 22px;border-radius:999px;transition:transform .2s,box-shadow .2s;
  cursor:pointer;border:none;font-family:var(--font-body);
}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(30,79,219,.32)}
.btn.ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--line)}
.btn.ghost:hover{box-shadow:inset 0 0 0 1.5px var(--cobalt);color:var(--cobalt)}

/* ---------- language switch ---------- */
.lang-switch{
  display:flex;gap:2px;background:var(--paper-2);border:1px solid var(--line);
  border-radius:999px;padding:3px;flex:none;
}
.lang-btn{
  font-family:var(--font-mono);font-size:12px;font-weight:500;letter-spacing:.06em;
  padding:6px 12px;border-radius:999px;border:none;background:transparent;
  color:var(--steel);cursor:pointer;transition:background .2s,color .2s;
}
.lang-btn:hover{color:var(--ink)}
.lang-btn.active{background:var(--ink);color:#fff}
@media(max-width:860px){.nav-links a:not(.btn){display:none}}
@media(max-width:560px){.nav-links .btn{display:none}}

/* ---------- hero (index) — full-bleed portrait, text on the right ---------- */
header.hero{
  position:relative;display:flex;align-items:center;overflow:hidden;background:#A3A1AC;
  height:82vh;height:clamp(540px,82svh,780px);
}
.hero-bg{
  position:absolute;top:0;bottom:0;left:0;width:100%;height:100%;
  object-fit:cover;object-position:100% 30%;z-index:0;
}
.hero-overlay{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(90deg,rgba(246,248,251,0) 30%,rgba(246,248,251,.55) 55%,rgba(246,248,251,.92) 100%);
}
.hero-fade{position:absolute;inset:auto 0 0 0;height:160px;background:linear-gradient(transparent,var(--paper));z-index:2}
.hero-inner{
  position:relative;z-index:3;width:100%;
  display:flex;justify-content:flex-end;
  padding:110px 0 70px;
}
.hero-text{max-width:540px;text-align:left}
.hero-inner h1{
  font-family:var(--font-display);
  font-variation-settings:"wdth" 118;
  font-weight:850;
  font-size:clamp(44px,6vw,76px);
  line-height:.95;letter-spacing:-.02em;
  margin:18px 0 8px;
}
.hero-inner h1 .accent{color:var(--cobalt)}
.hero-role{
  font-family:var(--font-display);
  font-variation-settings:"wdth" 80;
  font-weight:500;font-size:clamp(19px,2.6vw,28px);
  color:var(--ink-soft);letter-spacing:.01em;margin-bottom:24px;
}
.hero-lede{max-width:540px;font-size:15.5px;color:var(--ink-soft);margin-bottom:28px}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;margin-top:24px;
  background:var(--ink);color:#fff;border-radius:12px;padding:11px 18px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  box-shadow:0 12px 30px rgba(14,26,46,.22);
}
.hero-badge b{color:var(--amber);font-weight:500}
@media(max-width:900px){
  header.hero{display:block;height:auto;min-height:0;background:var(--paper)}
  .hero-bg{position:static;left:0;width:100%;display:block;height:56vh;object-fit:cover;object-position:22% 22%}
  .hero-overlay,.hero-fade{display:none}
  .hero-inner{padding:36px 0 70px;justify-content:flex-start}
  .hero-text{max-width:100%}
}

.scroll-hint{
  position:absolute;bottom:26px;left:50%;transform:translateX(-50%);
  z-index:3;font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;
  color:var(--steel);display:flex;flex-direction:column;align-items:center;gap:8px;
}
.scroll-hint::after{content:"";width:1.5px;height:34px;background:linear-gradient(var(--steel),transparent);animation:drip 2s infinite}
@keyframes drip{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ---------- stats ---------- */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}
.stats .wrap{display:grid;grid-template-columns:repeat(5,1fr);gap:1px}
.stat{padding:38px 20px;text-align:center;position:relative}
.stat+.stat::before{content:"";position:absolute;left:0;top:25%;height:50%;width:1px;background:var(--line)}
.stat .num{font-family:var(--font-display);font-variation-settings:"wdth" 110;font-weight:800;font-size:clamp(34px,4.5vw,52px);line-height:1;color:var(--ink)}
.stat .num em{font-style:normal;color:var(--cobalt)}
.stat .lbl{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--steel);margin-top:10px}
@media(max-width:1000px){.stats .wrap{grid-template-columns:repeat(3,1fr)}.stat:nth-child(4)::before{display:none}}
@media(max-width:680px){.stats .wrap{grid-template-columns:1fr 1fr}.stat:nth-child(3)::before,.stat:nth-child(5)::before{display:none}}

/* ---------- sections ---------- */
section{padding:110px 0}
.sec-head{max-width:680px;margin-bottom:56px}
.sec-head h2{
  font-family:var(--font-display);font-variation-settings:"wdth" 112;
  font-weight:800;font-size:clamp(34px,5vw,52px);line-height:1.05;letter-spacing:-.015em;
  margin:16px 0 18px;
}
.sec-head p{color:var(--ink-soft);font-size:16.5px}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:start}
.about-text p{color:var(--ink-soft);font-size:16.5px;margin-bottom:18px}
.about-text p strong{color:var(--ink)}
.about-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;position:sticky;top:100px;
}
.about-card h3{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--steel);margin-bottom:16px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px}
.chip{
  font-family:var(--font-mono);font-size:12.5px;padding:7px 13px;border-radius:999px;
  background:var(--cobalt-soft);color:var(--cobalt);
}
.chip.warm{background:#FBF1E0;color:#A66B14}
.avail{border-top:1px solid var(--line);padding-top:22px;display:flex;gap:12px;align-items:flex-start}
.pulse{width:10px;height:10px;border-radius:50%;background:#2FB671;margin-top:6px;flex:none;box-shadow:0 0 0 0 rgba(47,182,113,.5);animation:pulse 2.2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 12px rgba(47,182,113,0)}100%{box-shadow:0 0 0 0 rgba(47,182,113,0)}}
.avail b{display:block;font-size:15px}
.avail span{font-size:13.5px;color:var(--ink-soft)}
@media(max-width:860px){.about-grid{grid-template-columns:1fr}.about-card{position:static}}

/* ---------- skills grid ---------- */
#skills{background:var(--paper-2)}
.skill-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
a.skill{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px;transition:transform .3s,box-shadow .3s,border-color .3s;
  position:relative;overflow:hidden;display:block;
}
a.skill::before{
  content:"";position:absolute;top:0;left:0;width:100%;height:3px;
  background:var(--cobalt);transform:scaleX(0);transform-origin:left;transition:transform .35s;
}
a.skill:hover{transform:translateY(-5px);box-shadow:0 16px 40px rgba(14,26,46,.09);border-color:transparent}
a.skill:hover::before{transform:scaleX(1)}
.skill h3{font-family:var(--font-display);font-variation-settings:"wdth" 105;font-weight:700;font-size:19px;margin-bottom:12px}
.skill p{font-size:14px;color:var(--ink-soft);margin-bottom:16px}
.skill .more{
  font-family:var(--font-mono);font-size:12.5px;color:var(--cobalt);
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;
}
.skill .more::after{content:"→";transition:transform .25s}
a.skill:hover .more::after{transform:translateX(4px)}
.tags{display:flex;flex-wrap:wrap;gap:6px}
.tags span{font-family:var(--font-mono);font-size:11.5px;padding:4px 10px;border-radius:6px;background:var(--paper-2);color:var(--ink-soft)}
@media(max-width:960px){.skill-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.skill-grid{grid-template-columns:1fr}}

/* ---------- timeline ---------- */
.timeline{position:relative;margin-top:20px}
.tl-rail{position:absolute;left:19px;top:0;bottom:0;width:2px;background:var(--line)}
.tl-rail-fill{position:absolute;left:19px;top:0;width:2px;background:var(--cobalt);height:0}
.tl-item{position:relative;padding:0 0 44px 66px}
.tl-node{
  position:absolute;left:11px;top:6px;width:18px;height:18px;border-radius:50%;
  background:var(--paper);border:2px solid var(--line);transition:border-color .4s,background .4s,box-shadow .4s;
  z-index:2;
}
.tl-item.lit .tl-node{border-color:var(--cobalt);background:var(--cobalt);box-shadow:0 0 0 5px var(--cobalt-soft)}
.tl-meta{font-family:var(--font-mono);font-size:12.5px;color:var(--steel);letter-spacing:.05em;display:flex;gap:14px;flex-wrap:wrap;margin-bottom:6px}
.tl-meta > span:first-child{color:var(--ink);font-weight:700}
.tl-meta .role{color:var(--cobalt)}
.tl-item h3{font-family:var(--font-display);font-variation-settings:"wdth" 108;font-weight:750;font-size:21px;margin-bottom:6px}
.tl-item p{font-size:14.5px;color:var(--ink-soft);max-width:680px}

#snakeSvg{display:none;position:absolute;inset:0;pointer-events:none;overflow:visible;z-index:1}
#snakeSvg .snake-base{fill:none;stroke:var(--line);stroke-width:2;stroke-linejoin:round;stroke-linecap:round}
#snakeSvg .snake-fill{fill:none;stroke:var(--cobalt);stroke-width:2;stroke-linejoin:round;stroke-linecap:round}
@media(min-width:1100px){
  .timeline{display:grid;grid-template-columns:1fr 1fr;column-gap:64px;padding-right:34px}
  .tl-rail,.tl-rail-fill{display:none}
  #snakeSvg{display:block}
  .tl-item{padding:36px 0 48px 36px;text-align:left}
  .tl-node{left:0;top:0}
}

/* ---------- clients ---------- */
#clients{background:var(--ink);color:#EAF0F9}
#clients .eyebrow{color:var(--amber)}
#clients .eyebrow::before{background:var(--amber)}
#clients .sec-head p{color:#9FB0C9}
.client-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.client{
  border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:22px 20px;
  transition:background .3s,transform .3s,border-color .3s;
}
.client:hover{background:rgba(255,255,255,.06);transform:translateY(-3px);border-color:rgba(255,255,255,.28)}
.client b{font-family:var(--font-display);font-variation-settings:"wdth" 106;font-weight:700;font-size:16.5px;display:block;margin-bottom:5px}
.client span{font-family:var(--font-mono);font-size:11.5px;color:#8DA0BE;letter-spacing:.06em;text-transform:uppercase}
@media(max-width:960px){.client-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:640px){.client-grid{grid-template-columns:1fr 1fr}}

/* ---------- contact ---------- */
#contact .contact-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:64px 56px;display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;
  position:relative;overflow:hidden;
}
#contact .contact-card::after{
  content:"";position:absolute;right:-120px;top:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,var(--cobalt-soft),transparent 70%);
}
#contact h2{font-family:var(--font-display);font-variation-settings:"wdth" 112;font-weight:800;font-size:clamp(30px,4.5vw,46px);line-height:1.05;margin:14px 0 16px}
#contact .contact-card > div > p{color:var(--ink-soft);margin-bottom:30px;max-width:440px}
.contact-list{display:flex;flex-direction:column;gap:18px;position:relative;z-index:1}
.contact-line{display:flex;gap:16px;align-items:center;padding:18px 22px;border:1px solid var(--line);border-radius:12px;background:var(--paper);transition:border-color .25s,transform .25s}
.contact-line:hover{border-color:var(--cobalt);transform:translateX(4px)}
.contact-line .k{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--steel);width:64px;flex:none}
.contact-line .v{font-weight:600;font-size:15px}
.cv-row{display:flex;gap:12px;flex-wrap:wrap}
@media(max-width:860px){#contact .contact-card{grid-template-columns:1fr;padding:44px 30px}}

footer{padding:44px 0;border-top:1px solid var(--line)}
footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-family:var(--font-mono);font-size:12.5px;color:var(--steel)}

/* ---------- skill subpages ---------- */
.subhero{padding:170px 0 70px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,var(--paper-2),var(--paper))}
.back-link{
  font-family:var(--font-mono);font-size:13px;color:var(--steel);
  display:inline-flex;align-items:center;gap:8px;margin-bottom:34px;transition:color .2s;
}
.back-link:hover{color:var(--cobalt)}
.back-link::before{content:"←";transition:transform .25s}
.back-link:hover::before{transform:translateX(-4px)}
.subhero h1{
  font-family:var(--font-display);font-variation-settings:"wdth" 114;
  font-weight:830;font-size:clamp(38px,6.5vw,72px);line-height:1;letter-spacing:-.02em;
  margin:16px 0 20px;
}
.subhero .lede{max-width:640px;font-size:17px;color:var(--ink-soft)}
.subhero .tags{margin-top:28px}

.diagram-card{
  background-color:#fff;
  background-image:radial-gradient(circle, #E6ECF6 1px, transparent 1px);
  background-size:26px 26px;background-position:center;
  border:1px solid var(--line);border-radius:20px;
  padding:44px;margin:64px 0;overflow-x:auto;
}
.diagram-card svg{width:100%;height:auto;display:block;min-width:640px}
.diagram-card figcaption{
  font-family:var(--font-mono);font-size:12.5px;color:var(--steel);
  margin-top:22px;text-align:center;letter-spacing:.04em;
}

.content-blocks{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin:0 0 70px}
.content-block{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px 30px;
}
.content-block .num{
  font-family:var(--font-mono);font-size:12px;color:var(--cobalt);letter-spacing:.12em;margin-bottom:12px;
}
.content-block h3{font-family:var(--font-display);font-variation-settings:"wdth" 106;font-weight:750;font-size:20px;margin-bottom:10px}
.content-block p{font-size:14.5px;color:var(--ink-soft)}
.content-block.full{grid-column:1/-1;background:var(--ink);color:#EAF0F9;border-color:var(--ink)}
.content-block.full h3{color:#fff}
.content-block.full p{color:#AEBDD6}
.content-block.full .num{color:var(--amber)}
@media(max-width:760px){.content-blocks{grid-template-columns:1fr}.diagram-card{padding:24px}}

.sub-cta{display:flex;gap:14px;flex-wrap:wrap;padding-bottom:100px}

/* SVG diagram shared classes */
.dg-box{fill:url(#gWhite);stroke:var(--line);stroke-width:1.5;filter:url(#soft)}
.dg-box-accent{fill:url(#gAccent);stroke:var(--cobalt);stroke-width:1.6;filter:url(#soft)}
.dg-box-dark{fill:url(#gDark);stroke:#0B1526;filter:url(#soft)}
.dg-label{font-family:var(--font-mono);font-size:12px;fill:var(--ink)}
.dg-label-soft{font-family:var(--font-mono);font-size:10.5px;fill:var(--steel)}
.dg-label-accent{font-family:var(--font-mono);font-size:12px;fill:var(--cobalt)}
.dg-label-light{font-family:var(--font-mono);font-size:12px;fill:#fff}
.dg-arrow{stroke:var(--steel);stroke-width:2;fill:none;marker-end:url(#arr)}
.dg-arrow-accent{stroke:var(--steel);stroke-width:2;fill:none;marker-end:url(#arrA)}
.dg-title{font-family:var(--font-display);font-weight:700;font-size:13px;fill:var(--ink)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s cubic-bezier(.2,.65,.3,1),transform .7s cubic-bezier(.2,.65,.3,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}