:root{
  --paper:#0D1430;
  --ink:#0E1230;
  --ink-soft:#4A5071;
  --indigo:#4F46E5;
  --cyan:#06B6D4;
  --coral:#FF5D5D;
  --card:#FFFFFF;
  --line:#E2E6F2;
  --grad:linear-gradient(96deg,var(--indigo) 0%,var(--cyan) 100%);
  --radius:20px;
  --font-display:'Space Grotesk',sans-serif;
  --font-body:'IBM Plex Sans',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  --pg:#FFFFFF;
  --hero-ink:#0E1230;
  --lead-c:#4A5071;
  --nav-bg:rgba(255,255,255,.85);
  --nav-line:#E2E6F2;
  --nav-link:#4A5071;
  --nav-link-h:#0E1230;
  --name-c:#0E1230;
  --h2-c:#0E1230;
  --tag-c:#4F46E5;
  --ghost:#DCE1F2;
  --pad:#6D64F0;
  --pad-stroke:#5B52E8;
  --pad-glow:rgba(79,70,229,.55);
  --about-c:#4A5071;
  --btn-ink-bg:#0E1230;
  --btn-ink-c:#FFFFFF;
  --menu-bg:#FFFFFF;
  font-family:var(--font-body);
  background:var(--pg);
  color:#EAEDF7;
  line-height:1.6;
  overflow-x:hidden;
  transition:background-color .9s ease;
}
body.dark{
  --pg:#0D1430;
  --hero-ink:#FFFFFF;
  --lead-c:#B9BFD9;
  --nav-bg:rgba(13,20,48,.82);
  --nav-line:rgba(255,255,255,.08);
  --nav-link:#A9B0CF;
  --nav-link-h:#FFFFFF;
  --name-c:#FFFFFF;
  --h2-c:#FFFFFF;
  --tag-c:#9AA3FF;
  --ghost:rgba(255,255,255,.14);
  --pad:#FFFFFF;
  --pad-stroke:rgba(255,255,255,.5);
  --pad-glow:rgba(255,255,255,.45);
  --about-c:#C6CBE3;
  --btn-ink-bg:#FFFFFF;
  --btn-ink-c:#0E1230;
  --menu-bg:#131A3D;
}

/* ---------- scroll progress ---------- */
.progress{
  position:fixed;top:0;left:0;height:4px;width:0%;
  background:var(--grad);z-index:100;
  border-radius:0 99px 99px 0;
}

/* ---------- background: architecture network that draws on scroll ---------- */
.bg-net{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  opacity:.6;
}
.bg-net svg{width:100%;height:100%}
.bg-net .ghost path{
  fill:none;stroke:var(--ghost);stroke-width:1.4;transition:stroke .9s ease;
  stroke-linejoin:round;stroke-linecap:round;
  stroke-dasharray:3 7;
}
.bg-net .wire{
  fill:none;stroke:url(#wiregrad);stroke-width:2;
  stroke-linejoin:round;stroke-linecap:round;
  stroke-dasharray:1;stroke-dashoffset:1;
}
.bg-net .pads rect{
  fill:var(--pad);stroke:var(--pad-stroke);stroke-width:1.2;opacity:.32;
  transition:opacity .5s,filter .5s,fill .9s ease,stroke .9s ease;
}
.bg-net .pads.lit rect{
  opacity:.95;
  filter:drop-shadow(0 0 10px var(--pad-glow));
}
.bg-net .pulses{opacity:0;transition:opacity .8s}
.bg-net .pulses.lit{opacity:1}
.bg-net .pulses rect{
  fill:var(--cyan);
  filter:drop-shadow(0 0 5px rgba(6,182,212,.9));
}

/* ---------- ambient gradient blobs ---------- */
.blob{
  position:fixed;border-radius:50%;filter:blur(90px);
  z-index:0;pointer-events:none;opacity:.35;
  animation:drift 26s ease-in-out infinite alternate;
}
.blob.b1{width:560px;height:560px;background:#4F46E5;top:-180px;right:-140px;opacity:.20}
.blob.b2{width:480px;height:480px;background:#06B6D4;bottom:-200px;left:-160px;animation-delay:-13s;opacity:.14}
@keyframes drift{
  from{transform:translate(0,0) scale(1)}
  to{transform:translate(60px,40px) scale(1.12)}
}

main{position:relative;z-index:1}
.wrap{max-width:1100px;margin:0 auto;padding:0 24px}

/* ---------- nav ---------- */
nav{
  position:fixed;top:0;left:0;right:0;z-index:90;
  background:var(--nav-bg);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--nav-line);
  transition:background-color .9s ease,border-color .9s ease;
}
.nav-in{
  max-width:1100px;margin:0 auto;padding:8px 24px;
  display:flex;align-items:center;justify-content:space-between;
}
.nav-name{
  font-family:var(--font-display);font-weight:700;font-size:17px;
  letter-spacing:-.02em;color:var(--name-c);text-decoration:none;transition:color .9s ease;
}
.nav-links{display:flex;gap:24px;align-items:center}
.menu-btn{
  display:none;background:none;border:0;cursor:pointer;
  width:40px;height:40px;padding:9px;border-radius:10px;
}
.menu-btn span{
  display:block;height:2px;border-radius:2px;background:var(--name-c);
  margin:5px 0;transition:background-color .9s ease;
}
.nav-links a{
  text-decoration:none;color:var(--nav-link);font-size:14px;font-weight:500;
  transition:color .3s;
}
.nav-links a:hover{color:var(--nav-link-h)}
.btn{
  display:inline-block;text-decoration:none;font-weight:600;font-size:14px;
  padding:9px 20px;border-radius:99px;transition:transform .15s,box-shadow .2s;
}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 6px 20px rgba(79,70,229,.28)}
.btn-grad:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(79,70,229,.36)}
.btn-ghost{border:1.5px solid var(--ink);color:var(--ink)}
.btn-ghost:hover{transform:translateY(-2px)}

/* ---------- hero ---------- */
.hero{
  min-height:92vh;
  display:flex;flex-direction:column;justify-content:center;
  padding:120px 0 80px;text-align:left;
}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--indigo);
  background:#EDEBFF;border:1px solid #DCD8FF;
  padding:7px 14px;border-radius:99px;margin-bottom:26px;
}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:#22C55E;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.about-grid{
  display:flex;align-items:center;gap:56px;
}
.about-text{flex:1;min-width:0}
.about-photo{
  width:300px;height:340px;border-radius:26px;object-fit:cover;
  box-shadow:0 22px 50px rgba(0,0,0,.35);
  flex-shrink:0;
}
h1{
  font-family:var(--font-display);
  font-size:clamp(2.3rem,5.6vw,4rem);
  line-height:1.06;letter-spacing:-.02em;font-weight:500;
  max-width:16ch;color:var(--hero-ink);
  transition:color .9s ease;
}
h1 .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{
  margin-top:14px;font-size:clamp(1.1rem,2.2vw,1.35rem);
  font-weight:500;color:var(--lead-c);max-width:46ch;line-height:1.45;
  letter-spacing:.01em;transition:color .9s ease;
}
.hero-cta{margin-top:36px;display:flex;gap:14px;flex-wrap:wrap}

/* ---------- stat strip ---------- */


/* ---------- sections ---------- */
section{padding:90px 0}
.about-copy{
  color:var(--about-c);transition:color .9s ease;font-size:clamp(1rem,1.6vw,1.12rem);line-height:1.75;
  max-width:62ch;margin-bottom:18px;
}
.sec-head{margin-bottom:42px}
.sec-tag{
  font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;
  color:var(--tag-c);margin-bottom:10px;transition:color .9s ease;
}
h2{
  font-family:var(--font-display);font-weight:700;letter-spacing:-.02em;
  font-size:clamp(1.7rem,4vw,2.5rem);line-height:1.15;color:var(--h2-c);transition:color .9s ease;
}

/* ---------- bento ---------- */
.bento{
  display:grid;gap:16px;
  grid-template-columns:repeat(12,1fr);
}
.cell{
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(3px);color:var(--ink);
  border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;position:relative;overflow:hidden;
  transition:transform .2s,box-shadow .25s;
}
.cell:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(14,18,48,.08)}
.cell h3{color:var(--ink);
  font-family:var(--font-display);font-size:1.35rem;font-weight:600;
  letter-spacing:-.01em;margin-bottom:10px;
}
.cell p{color:var(--ink-soft);font-size:.95rem}
.cell .top-line{position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad)}
.span-7{grid-column:span 7}
.span-5{grid-column:span 5}
.span-4{grid-column:span 4}
.span-12{grid-column:span 12}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.tag{
  font-size:12px;font-weight:600;color:var(--ink);
  background:#F3F5FB;border:1px solid var(--line);
  padding:5px 12px;border-radius:99px;
}
.cell .links{margin-top:22px;display:flex;gap:18px}
.cell .links a{
  font-size:14px;font-weight:600;color:var(--indigo);text-decoration:none;
}
.cell .links a:hover{text-decoration:underline}
.cert-score{
  font-family:var(--font-display);font-size:3.4rem;font-weight:700;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  line-height:1;
}
.live-pill{
  display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:600;
  color:#15803D;background:#EAF7EE;border:1px solid #CDEBD6;
  padding:4px 11px;border-radius:99px;margin-bottom:14px;
}
.live-pill .dot{width:7px;height:7px;border-radius:50%;background:#22C55E;animation:pulse 2s infinite}

/* ---------- skills ---------- */
.skill-groups{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.sg{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.sg h4{font-family:var(--font-display);font-size:1rem;font-weight:600;margin-bottom:14px}

/* ---------- timeline ---------- */
.tl{position:relative;padding:8px 0}
.tl::before{
  content:"";position:absolute;left:50%;top:0;bottom:0;width:2px;
  background:rgba(255,255,255,.16);transform:translateX(-50%);
}
.tl-item{
  position:relative;width:calc(50% - 30px);color:var(--ink);
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:16px 20px;margin-bottom:20px;
  box-shadow:0 6px 18px rgba(14,18,48,.05);
}
.tl-item:nth-child(even){margin-left:auto;margin-top:-52px}
.tl-item:last-child{margin-bottom:0}
.tl-item::before{
  content:"";position:absolute;top:20px;width:14px;height:14px;border-radius:50%;
  background:var(--card);border:3px solid var(--indigo);
}
.tl-item:nth-child(odd)::before{right:-37px}
.tl-item:nth-child(even)::before{left:-37px}
.tl-item.future::before{border-color:#C7CDE8}
.tl-date{font-size:12px;font-weight:600;color:var(--indigo);margin-bottom:3px}
.tl-item.future .tl-date{color:var(--ink-soft)}
.tl-item h3{color:var(--ink);font-family:var(--font-display);font-size:1.02rem;font-weight:600;line-height:1.3}
.tl-item p{color:var(--ink-soft);font-size:.86rem;margin-top:5px;line-height:1.5}

/* ---------- contact ---------- */
.contact-card{
  background:#141C42;border:1px solid rgba(255,255,255,.10);color:#fff;border-radius:28px;
  padding:64px 40px;text-align:center;position:relative;overflow:hidden;
}
.contact-card h2{color:#fff}
.contact-card p{color:#B9BEDB;max-width:50ch;margin:16px auto 0}
.contact-card .hero-cta{justify-content:center}
.contact-card .glow{
  position:absolute;width:420px;height:420px;border-radius:50%;
  background:var(--grad);filter:blur(120px);opacity:.32;
  top:-200px;right:-120px;
}
footer{padding:36px 0 48px;text-align:center;color:var(--ink-soft);font-size:13px}

/* ---------- reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

@media (max-width:840px){
  .span-7,.span-5,.span-4{grid-column:span 12}
  .menu-btn{display:block}
  .nav-links{
    display:none;position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--menu-bg);border-bottom:1px solid var(--nav-line);
    box-shadow:0 18px 36px rgba(0,0,0,.22);
    padding:8px 0 14px;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:13px 24px;font-size:15px}
  .nav-links .btn{margin:8px 24px 0;text-align:center}
  .hero{padding-top:120px;text-align:center}
  .hero h1{margin-left:auto;margin-right:auto}
  .hero p.lead{margin-left:auto;margin-right:auto}
  .about-grid{flex-direction:column;gap:32px}
  .about-photo{width:min(280px,80vw);height:300px}
  .tl::before{left:8px;transform:none}
  .tl-item{width:auto;margin-left:34px!important;margin-top:0!important}
  .tl-item:nth-child(odd)::before,.tl-item:nth-child(even)::before{left:-33px;right:auto}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  .bg-net{opacity:.6!important}
  .bg-net .wire{stroke-dashoffset:0!important}
  .bg-net .pads rect{opacity:1}
  .bg-net .pulses{display:none}
}