:root{
  --bg:#121214; --bg2:#17171b; --card:#1a1a20; --card2:#1e1e26;
  --border:#2a2d36; --border2:#363b47;
  --fg:#e8eaf0; --muted:#9aa3b2; --faint:#6b7280;
  --navy:#1d3a6e; --navy2:#274b8f; --accent:#6ea8ff; --accent2:#8fbcff;
  --green:#7dd3a0; --orange:#e8b26d; --red:#f28b82;
  --tok-k:#7aa2f7; --tok-s:#9ece6a; --tok-c:#565f89; --tok-n:#e0af68; --tok-f:#c3a6ff;
  --radius:14px;
  --shadow:0 1px 2px rgba(0,0,0,.5),0 12px 32px rgba(0,0,0,.35);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{
  font:16px/1.7 "Inter","Segoe UI",-apple-system,BlinkMacSystemFont,Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);color:var(--fg);-webkit-font-smoothing:antialiased;
  background-image:
    linear-gradient(45deg,rgba(148,163,184,.045) 1px,transparent 1px),
    linear-gradient(-45deg,rgba(148,163,184,.045) 1px,transparent 1px);
  background-size:34px 34px;
}
h1,h2,h3,.brand{font-family:"Outfit","Inter","Segoe UI",sans-serif}
a{color:var(--accent);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--accent2)}
img{max-width:100%;height:auto}
.wrap{max-width:1100px;margin:0 auto;padding:0 1.4rem}
section{padding:4.5rem 0}
.kicker{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent);margin-bottom:.7rem}
section h2{font-size:clamp(1.5rem,3vw,2rem);letter-spacing:-.02em;margin-bottom:.5rem}
.section-sub{color:var(--muted);max-width:44rem;margin-bottom:2rem}

/* ── header ── */
header.site{position:sticky;top:0;z-index:60;
  background:rgba(18,18,20,.82);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border)}
header.site .wrap{display:flex;align-items:center;gap:1rem;height:68px}
.brand{display:flex;align-items:center;gap:.65rem;font-weight:700;font-size:1.02rem;
  letter-spacing:.12em;color:var(--fg)}
.brand:hover{color:var(--fg)}
.brand svg{width:26px;height:26px;display:block}
nav.main{margin-left:auto;display:flex;gap:1.6rem;font-size:.92rem;font-weight:500}
nav.main a{color:var(--muted);position:relative;padding:.2rem 0}
nav.main a::after{content:"";position:absolute;left:0;right:100%;bottom:-2px;height:2px;
  background:var(--accent);transition:right .22s var(--ease)}
nav.main a:hover{color:var(--fg)}
nav.main a:hover::after,nav.main a.active::after{right:0}
nav.main a.active{color:var(--fg)}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--border);
  border-radius:8px;color:var(--fg);padding:.4rem .6rem;font-size:1.05rem;cursor:pointer}
@media(max-width:760px){
  .nav-toggle{display:block}
  nav.main{display:none;position:absolute;top:68px;left:0;right:0;flex-direction:column;
    gap:0;background:var(--bg2);border-bottom:1px solid var(--border);padding:.4rem 0}
  nav.main.open{display:flex}
  nav.main a{padding:.8rem 1.4rem}
  nav.main a::after{display:none}
}

/* ── hero ── */
.hero{padding:5.5rem 0 5rem;border-bottom:1px solid var(--border);
  background:
    radial-gradient(52rem 26rem at 18% -10%,rgba(39,75,143,.28),transparent 60%),
    radial-gradient(40rem 22rem at 92% 8%,rgba(110,168,255,.10),transparent 55%)}
.hero .wrap{display:grid;grid-template-columns:1.5fr .9fr;gap:3rem;align-items:center}
@media(max-width:860px){.hero .wrap{grid-template-columns:1fr}.hero-avatar{order:-1;justify-self:start}}
.hero h1{font-size:clamp(1.9rem,4.6vw,3.1rem);line-height:1.12;letter-spacing:-.03em;
  margin:0 0 1.1rem}
.hero h1 .grad{background:linear-gradient(100deg,var(--accent2),var(--accent) 45%,#4d7fd6);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.sub{color:var(--muted);font-size:1.12rem;max-width:38rem;margin-bottom:1.9rem}
.cta{display:flex;gap:.9rem;flex-wrap:wrap}
.btn{display:inline-block;font-weight:600;font-size:.98rem;padding:.78rem 1.55rem;
  border-radius:10px;border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s}
.btn.primary{background:linear-gradient(135deg,var(--navy2),var(--navy));color:#fff;
  box-shadow:0 4px 18px rgba(29,58,110,.45)}
.btn.primary:hover{transform:translateY(-2px);box-shadow:0 8px 26px rgba(39,75,143,.55);color:#fff}
.btn.ghost{background:transparent;color:var(--accent);border-color:var(--border2)}
.btn.ghost:hover{transform:translateY(-2px);border-color:var(--accent);color:var(--accent2)}
.hero-avatar{position:relative;width:min(260px,60vw);aspect-ratio:1}
.hero-avatar .ring{position:absolute;inset:0;border-radius:28px;padding:2px;
  background:linear-gradient(140deg,var(--accent),transparent 40%,var(--navy2) 80%)}
.hero-avatar .ph{position:absolute;inset:2px;border-radius:26px;background:var(--card2);
  display:flex;align-items:center;justify-content:center;flex-direction:column;gap:.4rem;
  border:1px solid var(--border);overflow:hidden}
.hero-avatar .ph span{font-family:"Outfit";font-size:3.2rem;font-weight:700;
  letter-spacing:.06em;color:var(--accent)}
.hero-avatar .ph small{color:var(--faint);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase}
.hero-avatar .ph img{width:100%;height:100%;object-fit:cover}
.hero-stats{display:flex;gap:2.2rem;margin-top:2.4rem;flex-wrap:wrap}
.hero-stats b{display:block;font-family:"Outfit";font-size:1.5rem;color:var(--fg)}
.hero-stats span{color:var(--faint);font-size:.85rem}

/* ── tabs (expertise) ── */
.tabs{display:flex;gap:.5rem;flex-wrap:wrap;border-bottom:1px solid var(--border);margin-bottom:1.8rem}
.tab-btn{background:none;border:none;border-bottom:2px solid transparent;color:var(--muted);
  font:inherit;font-weight:600;font-size:.95rem;padding:.7rem 1rem;cursor:pointer;
  transition:color .18s}
.tab-btn:hover{color:var(--fg)}
.tab-btn[aria-selected="true"]{color:var(--accent);border-bottom-color:var(--accent)}
.tab-panel{display:none}
.tab-panel.active{display:grid;gap:1.4rem;grid-template-columns:1.2fr .8fr;align-items:start;
  animation:fadeUp .35s var(--ease)}
@media(max-width:820px){.tab-panel.active{grid-template-columns:1fr}}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.tab-panel h3{font-size:1.25rem;margin-bottom:.7rem}
.tab-panel p{color:var(--muted);margin-bottom:1rem}
.chiplist{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:.4rem}
.chip{font-size:.8rem;font-weight:600;color:var(--accent2);background:rgba(110,168,255,.08);
  border:1px solid rgba(110,168,255,.25);border-radius:999px;padding:.22rem .75rem}
.facts{display:grid;gap:.9rem}
.fact{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:1rem 1.15rem;transition:transform .18s var(--ease),border-color .18s}
.fact:hover{transform:translateY(-3px);border-color:var(--border2)}
.fact b{display:block;font-size:.95rem;margin-bottom:.15rem}
.fact span{color:var(--muted);font-size:.88rem}

/* ── code vault ── */
.pills{display:flex;gap:.55rem;flex-wrap:wrap;margin-bottom:1.8rem}
.pill{background:var(--card);border:1px solid var(--border);border-radius:999px;
  color:var(--muted);font:inherit;font-size:.86rem;font-weight:600;padding:.42rem 1.05rem;
  cursor:pointer;transition:all .18s var(--ease)}
.pill:hover{color:var(--fg);border-color:var(--border2)}
.pill[aria-pressed="true"]{background:rgba(39,75,143,.35);border-color:var(--navy2);color:var(--accent2)}
.vault-grid{display:grid;gap:1.4rem;grid-template-columns:repeat(auto-fit,minmax(min(480px,100%),1fr))}
.codecard{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);transition:transform .18s var(--ease),border-color .18s}
.codecard:hover{transform:translateY(-3px);border-color:var(--border2)}
.codecard.hidden,.disc-card.hidden{display:none}
.codehead{display:flex;align-items:center;gap:.7rem;padding:.7rem 1rem;
  background:var(--card2);border-bottom:1px solid var(--border)}
.codehead .fname{font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace;font-size:.85rem;color:var(--fg)}
.codehead .lang{font-size:.7rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--faint);border:1px solid var(--border2);border-radius:5px;padding:.08rem .5rem}
.copybtn{margin-left:auto;background:none;border:1px solid var(--border2);border-radius:7px;
  color:var(--muted);font:inherit;font-size:.8rem;font-weight:600;padding:.28rem .8rem;
  cursor:pointer;transition:all .15s}
.copybtn:hover{color:var(--fg);border-color:var(--accent)}
.copybtn.done{color:var(--green);border-color:var(--green)}
.codecard pre{padding:1.05rem 1.15rem;overflow-x:auto;max-height:420px;font-size:.83rem;line-height:1.6;
  font-family:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace;color:#c8ccd8}
.tok-k{color:var(--tok-k)} .tok-s{color:var(--tok-s)} .tok-c{color:var(--tok-c);font-style:italic}
.tok-n{color:var(--tok-n)} .tok-f{color:var(--tok-f)}

/* ── discussions ── */
.disc-grid{display:grid;gap:1.3rem;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.disc-card{display:flex;flex-direction:column;gap:.6rem;background:var(--card);
  border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem 1.3rem;
  box-shadow:var(--shadow);transition:transform .18s var(--ease),border-color .18s}
.disc-card:hover{transform:translateY(-3px);border-color:var(--border2)}
.disc-cat{align-self:flex-start;font-size:.72rem;font-weight:700;letter-spacing:.08em;
  text-transform:uppercase;border-radius:5px;padding:.14rem .55rem}
.disc-cat.tech{color:var(--accent2);background:rgba(110,168,255,.1)}
.disc-cat.finance{color:var(--green);background:rgba(125,211,160,.1)}
.disc-cat.fitness{color:var(--orange);background:rgba(232,178,109,.1)}
.disc-card h3{font-size:1.06rem;line-height:1.4}
.disc-card p{color:var(--muted);font-size:.9rem;flex:1}
.disc-meta{display:flex;gap:.8rem;color:var(--faint);font-size:.78rem}
.disc-soon{color:var(--orange);font-size:.75rem;font-weight:600}
a.disc-card{color:var(--fg)}
a.disc-card:hover h3{color:var(--accent2)}

/* ── blog post page ── */
.post-wrap{max-width:760px}
.post-title{font-size:clamp(1.7rem,4vw,2.4rem);line-height:1.2;letter-spacing:-.02em;margin:.6rem 0 .8rem}
.post-hero{border-radius:var(--radius);border:1px solid var(--border);margin-bottom:2rem;width:100%}
.post-body>*+*{margin-top:1.1rem}
.post-body h2{font-size:1.45rem;margin-top:2.4rem}
.post-body h3{font-size:1.15rem;margin-top:1.8rem}
.post-body p,.post-body li{color:#c3cad4}
.post-body ul,.post-body ol{padding-left:1.4rem}
.post-body img{border-radius:10px;border:1px solid var(--border)}
.post-body blockquote{border-left:3px solid var(--navy2);padding:.2rem 0 .2rem 1.1rem;color:var(--muted)}
.post-body hr{border:none;border-top:1px solid var(--border)}
.post-body pre{background:var(--card);border:1px solid var(--border);border-radius:10px;
  padding:1rem 1.1rem;overflow-x:auto;font-size:.83rem;line-height:1.6;
  font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace;color:#c8ccd8}
.post-body code{font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace;font-size:.88em;
  background:var(--card2);border:1px solid var(--border);border-radius:5px;padding:.08em .35em}
.post-body pre code{background:none;border:none;padding:0}

/* ── contact ── */
.contact-grid{display:grid;gap:2.5rem;grid-template-columns:.8fr 1.2fr}
@media(max-width:820px){.contact-grid{grid-template-columns:1fr}}
form.contact{display:grid;gap:1rem}
form.contact label{display:grid;gap:.35rem;font-weight:600;font-size:.88rem;color:var(--muted)}
form.contact input,form.contact select,form.contact textarea{
  font:inherit;padding:.68rem .85rem;border:1px solid var(--border);border-radius:9px;
  background:var(--bg2);color:var(--fg);width:100%;transition:border-color .15s}
form.contact input:focus,form.contact select:focus,form.contact textarea:focus{
  outline:none;border-color:var(--accent)}
form.contact textarea{min-height:9rem;resize:vertical}
form.contact .row2{display:grid;gap:1rem;grid-template-columns:1fr 1fr}
@media(max-width:600px){form.contact .row2{grid-template-columns:1fr}}
.hp-field{position:absolute!important;left:-9999px!important;width:1px;height:1px;overflow:hidden}
.form-msg{display:none;padding:.7rem .9rem;border-radius:8px;font-size:.92rem}
.form-msg.show{display:block}
.form-msg.ok{background:rgba(125,211,160,.12);color:var(--green)}
.form-msg.err{background:rgba(242,139,130,.12);color:var(--red)}

/* ── pay page ── */
.pay-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1rem}
.pay-card{display:flex;gap:.9rem;align-items:flex-start;background:var(--card);
  border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem 1.2rem;
  box-shadow:var(--shadow);color:var(--fg);transition:transform .18s var(--ease),border-color .18s}
a.pay-card:hover{transform:translateY(-3px);border-color:var(--accent)}
.pay-badge{flex:0 0 44px;height:44px;border-radius:10px;display:flex;align-items:center;
  justify-content:center;font-weight:800;font-size:1.3rem;color:#fff}
.pay-card h3{font-size:1.02rem;margin-bottom:.15rem}
.pay-card p{color:var(--muted);font-size:.88rem;line-height:1.45}
.pay-pending{display:inline-block;margin-top:.3rem;font-size:.75rem;font-weight:700;
  letter-spacing:.03em;color:var(--orange);background:rgba(232,178,109,.12);
  border-radius:5px;padding:.1rem .45rem}

/* ── footer / misc ── */
footer.site{border-top:1px solid var(--border);padding:2.2rem 0;color:var(--faint);font-size:.88rem}
footer.site .wrap{display:flex;gap:1rem;flex-wrap:wrap;justify-content:space-between}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}