:root{
  --bg:#0b0e13; --bg-2:#11151c; --line:#1e2530; --text:#e6e9ef; --muted:#8b95a5;
  --accent:#4ade80; --accent-2:#ff3d7f; --chip:#161b24;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
}
@media (prefers-color-scheme: light){
  :root:not([data-theme="dark"]){
    --bg:#f7f8fa; --bg-2:#ffffff; --line:#e3e7ee; --text:#10141b; --muted:#5b6574;
    --accent:#15803d; --accent-2:#d61f63; --chip:#eef1f5;
  }
}
:root[data-theme="light"]{
  --bg:#f7f8fa; --bg-2:#ffffff; --line:#e3e7ee; --text:#10141b; --muted:#5b6574;
  --accent:#15803d; --accent-2:#d61f63; --chip:#eef1f5;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);line-height:1.6;-webkit-font-smoothing:antialiased}
body::before{ /* faint scanlines */
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:repeating-linear-gradient(to bottom,transparent 0 3px,rgba(127,127,127,.035) 3px 4px);
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{position:relative;z-index:1;max-width:880px;margin:0 auto;padding:0 20px}

/* nav */
nav{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:56px;gap:16px}
.logo{font-family:var(--mono);font-weight:700;color:var(--text)}
.logo span{color:var(--accent)}
.links{display:flex;gap:18px;font-family:var(--mono);font-size:13px}
.links a{color:var(--muted)}
.links a:hover{color:var(--accent);text-decoration:none}
@media (max-width:560px){.links a:not(.keep){display:none}}

/* hero */
header.hero{padding:96px 0 72px}
.prompt{font-family:var(--mono);font-size:13px;color:var(--muted);margin-bottom:18px}
.prompt b{color:var(--accent);font-weight:500}
.cursor{display:inline-block;width:8px;height:15px;background:var(--accent);vertical-align:-2px;margin-left:4px;animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
h1{font-size:clamp(40px,8vw,68px);line-height:1.05;margin:0 0 16px;letter-spacing:-.02em;font-weight:700}
.glitch{position:relative;display:inline-block}
.glitch::before,.glitch::after{content:attr(data-text);position:absolute;inset:0;opacity:0;pointer-events:none}
.glitch::before{color:var(--accent);transform:translate(2px,0);clip-path:inset(0 0 60% 0)}
.glitch::after{color:var(--accent-2);transform:translate(-2px,0);clip-path:inset(55% 0 0 0)}
.glitch.on::before,.glitch.on::after{opacity:.85}
.tagline{font-size:clamp(18px,2.6vw,22px);color:var(--muted);max-width:640px;margin:0 0 28px}
.tagline strong{color:var(--text);font-weight:600}
.cta{display:flex;flex-wrap:wrap;gap:12px}
.btn{font-family:var(--mono);font-size:14px;padding:10px 16px;border:1px solid var(--accent);border-radius:6px;color:var(--accent);display:inline-flex;align-items:center;gap:8px}
.btn:hover{background:var(--accent);color:var(--bg);text-decoration:none}
.btn.ghost{border-color:var(--line);color:var(--muted)}
.btn.ghost:hover{border-color:var(--accent);background:transparent;color:var(--accent)}

/* sections */
section{padding:56px 0;border-top:1px solid var(--line)}
.label{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin:0 0 20px}
.label::before{content:"// "}
h2{font-size:26px;margin:0 0 16px;letter-spacing:-.01em}
p{margin:0 0 14px}
.muted{color:var(--muted)}

.focus{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:24px}
@media (max-width:640px){.focus{grid-template-columns:1fr}}
.card{background:var(--bg-2);border:1px solid var(--line);border-radius:10px;padding:18px}
.card h3{margin:0 0 6px;font-size:16px}
.card p{margin:0;color:var(--muted);font-size:15px}
.stat{font-family:var(--mono);font-size:24px;font-weight:700;color:var(--accent);display:block;margin-bottom:4px}

.stack{display:grid;grid-template-columns:140px 1fr;gap:12px 20px;align-items:start}
@media (max-width:560px){.stack{grid-template-columns:1fr;gap:6px}.stack dt{margin-top:10px}}
.stack dt{font-family:var(--mono);font-size:13px;color:var(--muted);padding-top:5px}
.stack dd{margin:0;display:flex;flex-wrap:wrap;gap:8px}
.chip{font-family:var(--mono);font-size:13px;background:var(--chip);border:1px solid var(--line);border-radius:4px;padding:3px 9px}

.certs{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.certs li{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px dashed var(--line)}
.certs li:last-child{border-bottom:0}
.certs .yr{font-family:var(--mono);font-size:13px;color:var(--muted);white-space:nowrap}
.certs .main{font-weight:600}
.certs .main::before{content:"▸ ";color:var(--accent)}

.projects{display:grid;gap:14px}
.proj .tags{margin-top:10px;display:flex;flex-wrap:wrap;gap:6px}
.proj .tags .chip{font-size:12px}

.posts{list-style:none;padding:0;margin:0}
.posts li{padding:14px 0;border-bottom:1px solid var(--line);display:flex;gap:18px;align-items:baseline}
.posts .date{font-family:var(--mono);font-size:13px;color:var(--muted);min-width:88px}
.posts .soon{color:var(--muted);font-style:italic}

footer{padding:40px 0 60px;border-top:1px solid var(--line);font-family:var(--mono);font-size:13px;color:var(--muted)}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.theme-toggle{background:none;border:1px solid var(--line);color:var(--muted);font-family:var(--mono);font-size:12px;border-radius:4px;padding:4px 8px;cursor:pointer}
.theme-toggle:hover{color:var(--accent);border-color:var(--accent)}

@media (prefers-reduced-motion: reduce){.cursor{animation:none}.glitch::before,.glitch::after{display:none}html{scroll-behavior:auto}}

/* ---------- blog ---------- */
.page{padding:64px 0 40px}
.post-head{margin-bottom:36px}
.post-head h1{font-size:clamp(32px,6vw,48px);margin:0 0 14px}
.post-meta{font-family:var(--mono);font-size:13px;color:var(--muted)}
.post-meta .tag{color:var(--accent)}
.prose{font-size:17px;line-height:1.75;max-width:720px}
.prose h2{font-size:24px;line-height:1.25;margin:40px 0 12px}
.prose h3{font-size:19px;margin:28px 0 10px}
.prose p,.prose ul,.prose ol{margin:0 0 18px}
.prose li{margin-bottom:6px}
.prose a{text-decoration:underline;text-underline-offset:3px}
.prose blockquote{margin:0 0 18px;padding:4px 0 4px 18px;border-left:3px solid var(--accent);color:var(--muted)}
.prose img{max-width:100%;border-radius:8px;border:1px solid var(--line)}
.prose hr{border:0;border-top:1px dashed var(--line);margin:36px 0}
.prose table{border-collapse:collapse;width:100%;margin:0 0 18px;font-size:15px;display:block;overflow-x:auto}
.prose th,.prose td{border:1px solid var(--line);padding:8px 10px;text-align:left}
.prose code{font-family:var(--mono);font-size:.88em;background:var(--chip);border:1px solid var(--line);border-radius:4px;padding:1px 5px}
.prose pre{background:#0d1117;color:#e6edf3;border:1px solid var(--line);border-radius:8px;padding:16px;overflow-x:auto;margin:0 0 20px;font-size:14px;line-height:1.55}
.prose pre code{background:none;border:0;padding:0;font-size:inherit;color:inherit}
.highlight .c,.highlight .c1,.highlight .cm{color:#8b949e;font-style:italic}
.highlight .k,.highlight .kd,.highlight .kn,.highlight .kr,.highlight .nt{color:#ff7b72}
.highlight .s,.highlight .s1,.highlight .s2,.highlight .sb{color:#a5d6ff}
.highlight .m,.highlight .mi,.highlight .mf{color:#79c0ff}
.highlight .nf,.highlight .nc{color:#d2a8ff}
.highlight .nb,.highlight .bp{color:#ffa657}
.highlight .o,.highlight .ow{color:#ff7b72}
.post-foot{margin-top:48px;padding-top:24px;border-top:1px solid var(--line);font-family:var(--mono);font-size:14px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.post-list .excerpt{display:block;color:var(--muted);font-size:15px;margin-top:4px}
.post-list li{flex-direction:column;gap:2px}
@media (min-width:640px){.post-list li{flex-direction:row;gap:18px}}