:root{
    --a:#0ea5e9; --a2:#6366f1; --a-ink:#0369a1;
    --bg:#ffffff; --bg-soft:#f6f8fb; --bg-card:#ffffff;
    --text:#0f172a; --muted:#5b6478; --border:#e7eaf1;
    --shadow:0 1px 2px rgba(15,23,42,.05),0 16px 40px -18px rgba(15,23,42,.22);
    --radius:16px;
  }
  @media (prefers-color-scheme:dark){
    :root{
      --a:#38bdf8; --a2:#818cf8; --a-ink:#7dd3fc;
      --bg:#0a0f1c; --bg-soft:#0e1526; --bg-card:#111a2e;
      --text:#e8edf7; --muted:#9aa6bf; --border:#1e2942;
      --shadow:0 1px 2px rgba(0,0,0,.4),0 20px 48px -20px rgba(0,0,0,.7);
    }
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{margin:0;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
  a{color:inherit;text-decoration:none}
  .wrap{max-width:1080px;margin:0 auto;padding:0 24px}
  .mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
  svg{flex:none}
  .btn{display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:15px;padding:12px 20px;border-radius:12px;border:1px solid transparent;cursor:pointer;transition:transform .12s,box-shadow .12s,border-color .12s}
  .btn:active{transform:translateY(1px)}
  .btn-primary{background:linear-gradient(135deg,var(--a),var(--a2));color:#fff;box-shadow:0 10px 24px -10px rgba(14,165,233,.8)}
  .btn-ghost{background:var(--bg-card);border-color:var(--border);color:var(--text)}
  .btn-ghost:hover{border-color:var(--a)}

  /* nav */
  header.nav{position:sticky;top:0;z-index:30;backdrop-filter:saturate(1.3) blur(10px);
    background:color-mix(in srgb,var(--bg) 82%,transparent);border-bottom:1px solid var(--border)}
  .nav-in{display:flex;align-items:center;justify-content:space-between;height:64px}
  .brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.02em}
  .brand .mk{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--a),var(--a2));display:grid;place-items:center;color:#fff;font-weight:800;font-size:14px}
  .nav-right{display:flex;align-items:center;gap:22px}
  .nav-links{display:flex;align-items:center;gap:22px;color:var(--muted);font-weight:500;font-size:15px}
  .nav-links a:hover{color:var(--text)}

  /* Mobile menu button. Hidden on desktop, where the links sit in the bar. */
  .nav-toggle{display:none;align-items:center;justify-content:center;padding:9px;border-radius:11px;
    background:var(--bg-card);border:1px solid var(--border);color:var(--text);cursor:pointer;
    transition:border-color .12s,transform .12s}
  .nav-toggle:hover{border-color:var(--a)}
  .nav-toggle:active{transform:translateY(1px)}
  .nav-toggle:focus-visible{outline:2px solid var(--a);outline-offset:2px}
  .nav-toggle .ic-close{display:none}
  .nav-toggle[aria-expanded="true"] .ic-open{display:none}
  .nav-toggle[aria-expanded="true"] .ic-close{display:block}

  @media(max-width:760px){
    .nav-right{gap:10px}
    .nav-toggle{display:inline-flex}
    .nav-cta{display:none}
    /* The links drop out of the bar into a panel under it. Previously they were
       simply hidden at this width, which left no way to reach them at all. */
    .nav-links{position:absolute;top:100%;left:0;right:0;display:none;
      flex-direction:column;align-items:stretch;gap:0;padding:4px 24px 14px;
      background:color-mix(in srgb,var(--bg) 97%,transparent);
      -webkit-backdrop-filter:saturate(1.3) blur(10px);backdrop-filter:saturate(1.3) blur(10px);
      border-bottom:1px solid var(--border);box-shadow:var(--shadow)}
    .nav-links.open{display:flex}
    .nav-links a.hide-sm{display:block}
    .nav-links a{padding:13px 2px;border-bottom:1px solid var(--border);font-size:16px}
    .nav-links a:last-child{border-bottom:0}
    .nav-links .btn{margin-top:12px;justify-content:center;border-bottom:0}
  }

  /* hero */
  .hero{position:relative;overflow:hidden;padding:70px 0 56px}
  .hero::before{content:"";position:absolute;inset:0;background:
    radial-gradient(50% 55% at 15% 0%,rgba(14,165,233,.16),transparent 70%),
    radial-gradient(45% 50% at 90% 10%,rgba(99,102,241,.16),transparent 70%);pointer-events:none}
  .hero-in{position:relative;display:grid;grid-template-columns:auto 1fr;gap:34px;align-items:center}
  @media(max-width:640px){.hero-in{grid-template-columns:1fr;text-align:center;gap:22px}}
  .avatar{width:132px;height:132px;border-radius:26px;position:relative;background:linear-gradient(135deg,var(--a),var(--a2));display:grid;place-items:center;color:#fff;font-size:44px;font-weight:800;box-shadow:var(--shadow);overflow:hidden}
  .avatar img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
  @media(max-width:640px){.avatar{margin:0 auto}}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--a-ink);
    background:color-mix(in srgb,var(--a) 12%,var(--bg));border:1px solid color-mix(in srgb,var(--a) 26%,transparent);
    padding:5px 12px;border-radius:999px;margin-bottom:14px}
  h1{font-size:clamp(30px,5.4vw,46px);line-height:1.06;letter-spacing:-.035em;margin:0 0 10px;font-weight:800}
  .role{font-size:clamp(16px,2.4vw,19px);color:var(--muted);margin:0 0 6px;font-weight:600}
  .role .grad{background:linear-gradient(135deg,var(--a),var(--a2));-webkit-background-clip:text;background-clip:text;color:transparent}
  .loc{color:var(--muted);font-size:14.5px;display:inline-flex;align-items:center;gap:6px;margin-bottom:20px;flex-wrap:wrap}
  .cta{display:flex;gap:12px;flex-wrap:wrap}
  @media(max-width:640px){.cta{justify-content:center}}
  .icon-btn{padding:12px 14px}

  /* stats */
  .stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:44px}
  @media(max-width:680px){.stats{grid-template-columns:repeat(2,1fr)}}
  .stat{background:var(--bg-card);border:1px solid var(--border);border-radius:14px;padding:18px 18px;text-align:center}
  .stat b{display:block;font-size:26px;letter-spacing:-.02em;font-weight:800;
    background:linear-gradient(135deg,var(--a),var(--a2));-webkit-background-clip:text;background-clip:text;color:transparent}
  .stat span{color:var(--muted);font-size:13px;font-weight:500}

  section{padding:66px 0}
  .sec-head{max-width:640px;margin:0 0 34px}
  .sec-head .k{font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--a-ink)}
  .sec-head h2{font-size:clamp(24px,4vw,34px);letter-spacing:-.03em;margin:8px 0 10px;font-weight:800}
  .sec-head p{color:var(--muted);font-size:16.5px;margin:0}
  .alt{background:var(--bg-soft);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
  .lead{font-size:clamp(16px,2vw,18px);color:var(--muted);max-width:760px}
  .lead b{color:var(--text);font-weight:600}

  /* activity */
  .act{display:grid;grid-template-columns:1.15fr 1fr;gap:22px}
  @media(max-width:800px){.act{grid-template-columns:1fr}}
  .act-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
  .act-card h4{margin:0 0 4px;font-size:15px}
  .act-card .sub{color:var(--muted);font-size:13px;margin:0 0 18px}
  .bar-row{margin:15px 0}
  .bar-row .lab{display:flex;justify-content:space-between;font-size:13.5px;font-weight:600;margin-bottom:6px}
  .bar-row .lab em{color:var(--muted);font-style:normal;font-weight:600}
  .track{height:9px;border-radius:6px;background:var(--bg-soft);overflow:hidden;border:1px solid var(--border)}
  .track i{display:block;height:100%;border-radius:6px;background:linear-gradient(90deg,var(--a),var(--a2))}
  .meta-list{display:flex;flex-direction:column;gap:16px}
  .meta-item{display:flex;gap:13px;align-items:flex-start}
  .meta-item .mi{width:38px;height:38px;border-radius:10px;background:color-mix(in srgb,var(--a) 12%,var(--bg));color:var(--a-ink);display:grid;place-items:center;flex:none}
  .meta-item b{font-size:14.5px}
  .meta-item p{margin:2px 0 0;color:var(--muted);font-size:13.5px}
  .badges2{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
  .tag2{font-size:12.5px;font-weight:600;color:var(--a-ink);background:color-mix(in srgb,var(--a) 12%,var(--bg));border:1px solid color-mix(in srgb,var(--a) 24%,transparent);padding:5px 11px;border-radius:999px}

  /* projects */
  .grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  @media(max-width:860px){.grid{grid-template-columns:repeat(2,1fr)}}
  @media(max-width:560px){.grid{grid-template-columns:1fr}}
  .proj{display:flex;flex-direction:column;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;transition:transform .15s,border-color .15s,box-shadow .15s}
  .proj:hover{transform:translateY(-3px);border-color:color-mix(in srgb,var(--a) 42%,var(--border));box-shadow:var(--shadow)}
  .proj .top{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
  .proj .ico{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--a),var(--a2))}
  .proj .star{font-size:12.5px;color:var(--muted);display:inline-flex;align-items:center;gap:4px;font-weight:600}
  .proj h3{margin:0 0 7px;font-size:16.5px;letter-spacing:-.01em}
  .proj p{margin:0 0 16px;color:var(--muted);font-size:14px;flex:1}
  .proj .foot{display:flex;align-items:center;justify-content:space-between;gap:10px}
  .lang{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--muted);font-weight:600}
  .ld{width:10px;height:10px;border-radius:50%}
  .links{display:flex;gap:14px;font-size:13px;font-weight:600}
  .links a{color:var(--a-ink);display:inline-flex;align-items:center;gap:4px}
  .links a:hover{text-decoration:underline}
  .more{margin-top:30px;text-align:center}

  /* gists */
  .gists{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
  @media(max-width:640px){.gists{grid-template-columns:1fr}}
  .gist{display:flex;gap:14px;align-items:flex-start;background:var(--bg-card);border:1px solid var(--border);border-radius:14px;padding:20px;transition:border-color .15s,transform .15s}
  .gist:hover{border-color:color-mix(in srgb,var(--a) 42%,var(--border));transform:translateY(-2px)}
  .gist .gi{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--a),var(--a2));flex:none}
  .gist b{font-size:15px}
  .gist p{margin:3px 0 8px;color:var(--muted);font-size:13.5px}
  .gist .files{display:flex;flex-wrap:wrap;gap:6px}
  .gist .f{font-size:11.5px;color:var(--muted);background:var(--bg-soft);border:1px solid var(--border);padding:3px 8px;border-radius:6px}

  /* skills */
  .skills{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
  @media(max-width:720px){.skills{grid-template-columns:1fr}}
  .skb{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:22px}
  .skb h4{margin:0 0 14px;font-size:14px;letter-spacing:.02em;display:flex;align-items:center;gap:9px}
  .skb h4 .d{width:9px;height:9px;border-radius:3px;background:linear-gradient(135deg,var(--a),var(--a2))}
  .chips{display:flex;flex-wrap:wrap;gap:8px}
  .chip{font-size:13px;font-weight:600;color:var(--text);background:var(--bg-soft);border:1px solid var(--border);padding:6px 12px;border-radius:9px}

  /* contact */
  .band{background:linear-gradient(135deg,var(--a),var(--a2));color:#fff;border-radius:22px;padding:52px 32px;text-align:center;box-shadow:0 26px 64px -26px rgba(14,165,233,.8)}
  .band h2{font-size:clamp(24px,3.6vw,32px);margin:0 0 12px;letter-spacing:-.02em}
  .band p{opacity:.94;margin:0 0 26px;font-size:17px}
  .band .cta{justify-content:center}
  .band .btn-primary{background:#fff;color:var(--a-ink)}
  .band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
  .band .btn-ghost:hover{border-color:#fff}

  footer{border-top:1px solid var(--border);padding:34px 0;color:var(--muted);font-size:14px}
  .foot-in{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}
  .foot-in .soc{display:flex;gap:16px}
  .foot-in a:hover{color:var(--text)}

  /* ---------- 3D scroll scene ---------- */
  #bg{position:fixed;inset:0;width:100%;height:100vh;z-index:-1;display:block;pointer-events:none}
  body{background:var(--bg)}
  /* Glassy sections so the fixed 3D scene glows through while text stays readable */
  section{position:relative;background:color-mix(in srgb,var(--bg) 78%,transparent);
    -webkit-backdrop-filter:blur(9px) saturate(1.15);backdrop-filter:blur(9px) saturate(1.15)}
  .alt{background:color-mix(in srgb,var(--bg-soft) 78%,transparent)}
  .hero{background:transparent}
  footer{position:relative;background:color-mix(in srgb,var(--bg) 78%,transparent);
    -webkit-backdrop-filter:blur(9px);backdrop-filter:blur(9px)}
  /* Cards get a subtle glass tint (kept high-opacity for crisp text) */
  .stat,.proj,.act-card,.skb,.gist{background:color-mix(in srgb,var(--bg-card) 84%,transparent);
    -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
  /* Scroll-reveal */
  .reveal{opacity:0;transform:translateY(32px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
  .reveal.in{opacity:1;transform:none}
  /* 3D tilt cards */
  .tilt{transform-style:preserve-3d;will-change:transform}
  @media (prefers-reduced-motion:reduce){
    .reveal{opacity:1;transform:none;transition:none}
    #bg{opacity:.55}
  }