/* Personal page v3 · retro-computing base (BASIC line numbers, prompt, block cursor) + light starfield accent.
   One stylesheet; light/dark via prefers-color-scheme; no web fonts, no trackers. */
:root{
  --bg:#f5f6ef; --bg-alt:#ebeee2; --surface:#fdfdf9; --text:#18201a; --muted:#4f5a52;
  --border:#d6dccb; --accent:#2a7a3b; --accent-ink:#ffffff; --accent-soft:#dcefd9; --focus:#1f5fd6;
  --phosphor:#2a7a3b; --star:rgba(30,70,40,.55); --hero:#e9efe0;
  --radius:10px; --wrap:1120px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark){
  :root{ --bg:#0b0f0c; --bg-alt:#0f1511; --surface:#121a14; --text:#e3eee4; --muted:#9fb3a3;
         --border:#223026; --accent:#6fe08a; --accent-ink:#06120a; --accent-soft:#16301d; --focus:#8ab4ff;
         --phosphor:#6fe08a; --star:rgba(220,255,228,.85); --hero:#070a08; }
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:400 17px/1.65 var(--font)}
img,svg{max-width:100%}
a{color:var(--accent);text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--focus);outline-offset:3px;border-radius:4px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:12px;top:-60px;background:var(--surface);color:var(--text);padding:10px 14px;border-radius:8px;border:1px solid var(--border);z-index:10}
.skip:focus{top:12px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.muted{color:var(--muted)}

/* header */
.site-header{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px 22px;padding-top:12px;padding-bottom:12px}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);text-decoration:none;font:650 16px/1.2 var(--mono);margin-right:auto}
.brand .mono{color:var(--phosphor);flex:none}
.brand .mono text{font-family:var(--mono)}
nav ul{display:flex;flex-wrap:wrap;gap:4px;list-style:none;margin:0;padding:0}
nav a{display:block;padding:6px 10px;border-radius:6px;color:var(--muted);text-decoration:none;font:500 14px/1.3 var(--mono)}
nav a:hover{color:var(--text);background:var(--bg-alt)}
nav a[aria-current="page"]{color:var(--accent-ink);background:var(--phosphor)}
.lang{font:500 13px/1.3 var(--mono);padding:6px 12px;border:1px solid var(--border);border-radius:6px;color:var(--text);text-decoration:none}
.lang:hover{border-color:var(--phosphor)}

/* hero */
.hero{position:relative;padding:84px 0 60px;overflow:hidden}
.hero.has-stars{background:var(--hero)}
.hero .stars{position:absolute;inset:0;width:100%;height:100%;display:block;pointer-events:none}
.hero .wrap{position:relative}
.kicker{font:500 13px/1.5 var(--mono);letter-spacing:.04em;color:var(--phosphor);margin:0 0 16px}
h1{font:700 clamp(30px,4.8vw,54px)/1.12 var(--mono);letter-spacing:-.02em;margin:0 0 22px;max-width:24ch}
.lead{font-size:clamp(17px,2vw,20px);color:var(--muted);max-width:62ch;margin:0}
.cursor{display:inline-block;width:.6em;height:1.05em;margin-left:.25em;vertical-align:-.15em;background:var(--phosphor);animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.ctas{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 0}
.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 16px;border-radius:6px;border:1px solid var(--border);background:var(--surface);color:var(--text);text-decoration:none;font:600 14px/1.3 var(--mono)}
.btn:hover{border-color:var(--phosphor)}
.btn.primary{background:var(--phosphor);border-color:var(--phosphor);color:var(--accent-ink)}
.btn.primary:hover{filter:brightness(1.08)}

/* sections */
.sec{padding:64px 0;border-top:1px solid var(--border)}
.sec.alt{background:var(--bg-alt)}
h2{font:700 clamp(24px,3.2vw,32px)/1.2 var(--mono);letter-spacing:-.01em;margin:0 0 14px}
.ln{font:500 .55em/1 var(--mono);color:var(--phosphor);margin-right:.7em;vertical-align:.3em;opacity:.9}
h3{font-size:18px;line-height:1.3;margin:0 0 8px}
.intro{color:var(--muted);margin:0 0 26px;max-width:62ch}
.sec > .wrap > p{max-width:68ch}
.grid{display:grid;gap:18px;margin-top:22px}
.g2{grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(min(100%,290px),1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(min(100%,235px),1fr))}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column}
.card p{margin:0 0 12px;color:var(--muted)}
.card .more{margin-top:auto;padding-top:4px}
.card .ctas{margin:4px 0 14px}
.card.plain{background:transparent;border-style:dashed}
.sec.alt .card.plain{background:var(--surface)}
.tag{font:500 12px/1.4 var(--mono)!important;text-transform:uppercase;letter-spacing:.06em;color:var(--phosphor)!important;margin:0 0 10px!important}
.more a{font:600 15px/1.4 var(--mono);text-decoration:none}
.more a:hover{text-decoration:underline}
.split{display:grid;gap:28px;grid-template-columns:repeat(auto-fit,minmax(min(100%,340px),1fr));align-items:start;margin-top:12px}
.split > div > p{color:var(--muted);font-size:18px}
.chips{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:16px 0 0}
.chips li{border:1px solid var(--border);background:var(--surface);border-radius:6px;padding:4px 10px;font:500 13px/1.5 var(--mono)}
.list{padding-left:20px;max-width:70ch}
.list li{margin:6px 0}
.basic{list-style:none;padding:0;margin:18px 0 0;max-width:72ch}
.basic li{display:grid;grid-template-columns:3.2em 1fr;gap:8px;padding:8px 0;border-bottom:1px dashed var(--border);font-size:18px}
.basic .ln{font-size:14px;vertical-align:0;margin:0;padding-top:4px}
.steps{counter-reset:s;list-style:none;padding:0;margin:20px 0 0;max-width:72ch}
.steps li{counter-increment:s;position:relative;padding:0 0 18px 52px}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:34px;height:34px;border-radius:6px;display:grid;place-items:center;background:var(--accent-soft);color:var(--phosphor);font:700 15px/1 var(--mono)}
.facts{margin:20px 0 0;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);max-width:760px}
.facts div{display:grid;grid-template-columns:minmax(110px,180px) 1fr;gap:16px;padding:14px 20px;border-top:1px solid var(--border)}
.facts div:first-child{border-top:0}
.facts dt{color:var(--muted);font:500 14px/1.6 var(--mono)}
.facts dd{margin:0}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:18px;list-style:none;padding:0;margin:24px 0 0}
.stats li{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px}
.stats strong{display:block;font:700 40px/1.1 var(--mono);color:var(--phosphor)}
.stats span{color:var(--muted)}
.timeline{list-style:none;padding:0;margin:24px 0 0;border-left:2px dashed var(--border);max-width:820px}
.timeline li{display:grid;grid-template-columns:120px 1fr;gap:16px;padding:0 0 22px 24px;position:relative}
.timeline li::before{content:"";position:absolute;left:-6px;top:9px;width:10px;height:10px;background:var(--phosphor)}
.timeline .year{font:600 14px/1.6 var(--mono);color:var(--phosphor);margin:2px 0 0}
.timeline p{margin:0 0 6px}
.timeline div > p{color:var(--muted)}
.contact-list{list-style:none;padding:0;margin:20px 0 0;max-width:560px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface)}
.contact-list li{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 20px;padding:16px 20px;border-top:1px solid var(--border)}
.contact-list li:first-child{border-top:0}
.contact-list span{color:var(--muted);font-family:var(--mono)}
.contact-list a{font-weight:600;word-break:break-all}
.cta-band h2{max-width:30ch}
.back{padding:8px 24px 64px}
.back a{text-decoration:none;font:600 15px/1.4 var(--mono)}

/* video facade */
.video{margin:0}
.video.big{max-width:900px;margin-top:8px}
.yt{position:relative;display:block;aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;background:#000;border:1px solid var(--border)}
.yt img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .3s}
.yt:hover img{transform:scale(1.02)}
.playbtn{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:68px;height:48px;border-radius:8px;display:grid;place-items:center;background:rgba(0,0,0,.72);color:#fff;font-size:22px;border:2px solid rgba(255,255,255,.85)}
.big .playbtn{width:88px;height:62px;font-size:28px}
.yt:hover .playbtn,.yt:focus-visible .playbtn{background:var(--phosphor);color:var(--accent-ink);border-color:transparent}
.yt-frame{aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border)}
.yt-frame iframe{width:100%;height:100%;border:0;display:block}
.video figcaption{margin-top:10px;font-size:15px}
.video figcaption .tag{display:inline;margin:0 6px 0 0!important}

/* footer */
.site-footer{border-top:1px solid var(--border);padding:28px 0 40px;font-size:15px}
.foot p{margin:4px 0}
.mono-line{font:600 14px/1.4 var(--mono);color:var(--phosphor)}

@media (max-width:640px){
  body{font-size:16px}
  .hero{padding:52px 0 40px}
  .sec{padding:48px 0}
  .brand{font-size:14px}
  nav{order:3;width:100%}
  nav a{padding:6px 8px;font-size:13px}
  .timeline li{grid-template-columns:1fr;gap:2px}
  .facts div{grid-template-columns:1fr;gap:2px}
  .basic li{font-size:16px}
}
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important;transition:none!important;animation:none!important}
}
@media print{.site-header,.skip,.stars{display:none}.sec{border:0}}

/* photo: retro monitor frame with subtle scanlines */
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:40px;align-items:center}
.photo{position:relative;margin:0;width:clamp(180px,22vw,260px);padding:10px 10px 8px;background:var(--surface);border:2px solid var(--phosphor);border-radius:12px;box-shadow:0 0 0 4px var(--accent-soft)}
.photo img{display:block;width:100%;height:auto;aspect-ratio:1;object-fit:cover;border-radius:6px;filter:saturate(.9) contrast(1.03)}
.photo::after{content:"";position:absolute;left:10px;right:10px;top:10px;aspect-ratio:1;border-radius:6px;pointer-events:none;
  background:repeating-linear-gradient(to bottom,rgba(0,0,0,.07) 0 1px,transparent 1px 3px)}
.photo figcaption{font:600 12px/1.4 var(--mono);color:var(--phosphor);margin-top:8px;letter-spacing:.04em}
@media (max-width:760px){
  .hero-grid{grid-template-columns:1fr;gap:24px}
  .photo{order:-1;width:150px}
}