:root {
  --ground:#eef2f1; --surface:#ffffff; --surface-2:#f6f9f8;
  --ink:#0d1a1b; --muted:#54635f; --faint:#7d8c87;
  --teal:#0c7d78; --teal-strong:#0a6763; --brass:#9c7526;
  --line:#d4ded9; --line-strong:#c1cec8;
  --code-key:#0c7d78; --code-str:#6a4a12; --code-num:#8a4a2a; --code-punct:#9aa8a3;
  --good:#1f8a5b; --shadow:0 1px 2px rgba(13,26,27,.04),0 12px 30px -18px rgba(13,26,27,.22);
  --maxw:1120px;
  --f-display:"Helvetica Neue","Arial Nova",Arial,system-ui,sans-serif;
  --f-body:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --f-mono:ui-monospace,"SF Mono","SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
@media (prefers-color-scheme:dark){
  :root{
    --ground:#0a1315; --surface:#0f1c1d; --surface-2:#12211f;
    --ink:#e8f0ed; --muted:#93a49f; --faint:#6f817c;
    --teal:#26b8a8; --teal-strong:#41c9ba; --brass:#d6ab5c;
    --line:#1f3230; --line-strong:#294240;
    --code-key:#41c9ba; --code-str:#d6ab5c; --code-num:#e0906a; --code-punct:#5c706b;
    --good:#37c07f; --shadow:0 1px 2px rgba(0,0,0,.3),0 20px 40px -24px rgba(0,0,0,.6);
  }
}
:root[data-theme="light"]{
  --ground:#eef2f1; --surface:#ffffff; --surface-2:#f6f9f8;
  --ink:#0d1a1b; --muted:#54635f; --faint:#7d8c87;
  --teal:#0c7d78; --teal-strong:#0a6763; --brass:#9c7526;
  --line:#d4ded9; --line-strong:#c1cec8;
  --code-key:#0c7d78; --code-str:#6a4a12; --code-num:#8a4a2a; --code-punct:#9aa8a3;
  --good:#1f8a5b; --shadow:0 1px 2px rgba(13,26,27,.04),0 12px 30px -18px rgba(13,26,27,.22);
}
:root[data-theme="dark"]{
  --ground:#0a1315; --surface:#0f1c1d; --surface-2:#12211f;
  --ink:#e8f0ed; --muted:#93a49f; --faint:#6f817c;
  --teal:#26b8a8; --teal-strong:#41c9ba; --brass:#d6ab5c;
  --line:#1f3230; --line-strong:#294240;
  --code-key:#41c9ba; --code-str:#d6ab5c; --code-num:#e0906a; --code-punct:#5c706b;
  --good:#37c07f; --shadow:0 1px 2px rgba(0,0,0,.3),0 20px 40px -24px rgba(0,0,0,.6);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--f-body);
  font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,5vw,48px);}
a{color:var(--teal);text-decoration:none}
h1,h2,h3{font-family:var(--f-display);font-weight:800;letter-spacing:-.02em;text-wrap:balance;margin:0}
p{margin:0}

.kicker{font-family:var(--f-mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--brass);font-weight:600}
.idx{font-family:var(--f-mono);font-size:12px;letter-spacing:.1em;color:var(--faint)}
.rule{height:1px;background:var(--line);border:0;margin:0}

header.bar{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--ground) 88%,transparent);
  backdrop-filter:saturate(1.2) blur(8px);border-bottom:1px solid var(--line)}
.bar .wrap{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--f-display);font-weight:800;letter-spacing:-.01em;color:inherit;text-decoration:none}
.brand .dot{width:9px;height:9px;border-radius:50%;background:var(--teal);align-self:center;box-shadow:0 0 0 3px color-mix(in srgb,var(--teal) 22%,transparent)}
.brand .logo{height:30px;width:auto;display:block}
.brand small{font-family:var(--f-mono);font-weight:500;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);padding-left:12px;margin-left:2px;border-left:1px solid var(--line-strong)}
nav.links{margin-left:auto;display:flex;gap:26px}
nav.links a{font-size:14px;color:var(--muted);font-weight:500}
nav.links a:hover{color:var(--ink)}
.btn{font-family:var(--f-body);font-weight:600;font-size:14px;border-radius:3px;padding:10px 16px;
  background:var(--teal);color:#fff;border:1px solid var(--teal-strong);cursor:pointer;transition:transform .12s ease,background .2s}
:root[data-theme="dark"] .btn{color:#04110f}
@media (prefers-color-scheme:dark){.btn{color:#04110f}}
:root[data-theme="light"] .btn{color:#fff}
.btn:hover{transform:translateY(-1px);background:var(--teal-strong)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.btn.ghost:hover{border-color:var(--teal);color:var(--teal);background:transparent}
a.btn{display:inline-block}

.theme-toggle{width:38px;height:38px;flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);border-radius:3px;background:transparent;color:var(--muted);cursor:pointer;transition:color .2s,border-color .2s}
.theme-toggle:hover{color:var(--teal);border-color:var(--teal)}
.theme-toggle svg{width:17px;height:17px}
@media(max-width:720px){nav.links{display:none}}

.hero .wrap{padding-top:clamp(28px,4vw,52px);padding-bottom:clamp(40px,6vw,72px);
  display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,64px);align-items:center}
@media(max-width:920px){.hero .wrap{grid-template-columns:1fr;gap:36px}}
.hero h1{font-size:clamp(38px,6.2vw,68px);line-height:1.02}
.hero h1 em{font-style:normal;color:var(--teal)}
.hero .lede{margin-top:22px;font-size:clamp(17px,2.1vw,20px);color:var(--muted);max-width:34em}
.hero-cta{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero-meta{margin-top:26px;display:flex;gap:22px;flex-wrap:wrap;font-family:var(--f-mono);font-size:12.5px;color:var(--faint)}
.hero-meta b{color:var(--ink);font-weight:600}

.resource{background:var(--surface);border:1px solid var(--line-strong);border-radius:6px;box-shadow:var(--shadow);overflow:hidden}
.resource .head{display:flex;align-items:center;gap:10px;padding:11px 14px;border-bottom:1px solid var(--line);background:var(--surface-2)}
.resource .head .lamp{width:8px;height:8px;border-radius:50%;background:var(--good);box-shadow:0 0 0 3px color-mix(in srgb,var(--good) 24%,transparent)}
.resource .head .path{font-family:var(--f-mono);font-size:12px;color:var(--muted)}
.resource .head .valid{margin-left:auto;font-family:var(--f-mono);font-size:11px;letter-spacing:.08em;color:var(--good);
  display:inline-flex;align-items:center;gap:6px}
.resource pre{margin:0;padding:16px 18px;font-family:var(--f-mono);font-size:13px;line-height:1.72;overflow-x:auto;color:var(--ink)}
.k{color:var(--code-key)} .s{color:var(--code-str)} .n{color:var(--code-num)} .p{color:var(--code-punct)}
.scan{position:relative}
.scan::after{content:"";position:absolute;left:0;right:0;top:0;height:34px;
  background:linear-gradient(180deg,color-mix(in srgb,var(--teal) 16%,transparent),transparent);
  animation:scan 4.6s cubic-bezier(.6,0,.4,1) infinite;pointer-events:none}
@keyframes scan{0%{transform:translateY(-10px);opacity:0}12%{opacity:1}88%{opacity:1}100%{transform:translateY(360px);opacity:0}}

section{padding:clamp(52px,7vw,90px) 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:38px}
.sec-head h2{font-size:clamp(26px,3.6vw,40px);line-height:1.05;max-width:16em}
.sec-head .kicker{margin-bottom:12px;display:block}
.sec-head .aside{font-size:14px;color:var(--muted);max-width:22em;text-align:right}
@media(max-width:720px){.sec-head{flex-direction:column;align-items:flex-start}.sec-head .aside{text-align:left}}

.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface)}
.stats .wrap{display:grid;grid-template-columns:repeat(5,1fr)}
.stat{padding:26px 8px 24px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat .num{font-family:var(--f-display);font-weight:800;font-size:clamp(26px,3.4vw,38px);letter-spacing:-.02em;line-height:1}
.stat .num span{color:var(--teal)}
.stat .lab{margin-top:8px;font-family:var(--f-mono);font-size:11.5px;letter-spacing:.05em;color:var(--muted);text-transform:uppercase}
@media(max-width:820px){.stats .wrap{grid-template-columns:repeat(2,1fr)}.stat{border-bottom:1px solid var(--line)}.stat:nth-child(2){border-right:0}}

.grid{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:6px;overflow:hidden}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:820px){.cols-3,.cols-2{grid-template-columns:1fr}}
.cell{background:var(--surface);padding:26px 24px}
.cell .idx{display:block;margin-bottom:14px}
.cell h3{font-size:19px;letter-spacing:-.01em}
.cell p{margin-top:9px;color:var(--muted);font-size:15px}
.cell .tags{margin-top:14px;display:flex;flex-wrap:wrap;gap:6px}
.tag{font-family:var(--f-mono);font-size:11.5px;color:var(--teal);border:1px solid color-mix(in srgb,var(--teal) 34%,var(--line));
  padding:3px 8px;border-radius:3px;background:color-mix(in srgb,var(--teal) 7%,transparent)}

.track{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
@media(max-width:920px){.track{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.track{grid-template-columns:1fr}}
.week{border:1px solid var(--line);border-radius:6px;background:var(--surface);padding:20px 18px;position:relative}
.week .wk{font-family:var(--f-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--brass)}
.week h3{font-size:17px;margin-top:8px}
.week ul{margin:12px 0 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:7px}
.week li{font-size:13.5px;color:var(--muted);padding-left:15px;position:relative}
.week li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:var(--teal)}
.week .brk{color:var(--brass)}

.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,56px);align-items:start}
@media(max-width:820px){.split{grid-template-columns:1fr}}
.flist{display:flex;flex-direction:column;gap:2px}
.frow{display:grid;grid-template-columns:auto 1fr;gap:18px;padding:20px 0;border-top:1px solid var(--line)}
.frow:last-child{border-bottom:1px solid var(--line)}
.frow .fi{font-family:var(--f-mono);font-size:12px;color:var(--faint);padding-top:3px}
.frow h3{font-size:17px}
.frow p{margin-top:6px;color:var(--muted);font-size:15px}
.panel{background:var(--surface);border:1px solid var(--line-strong);border-radius:6px;padding:24px;box-shadow:var(--shadow)}
.panel .kicker{display:block;margin-bottom:14px}
.chiprow{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.chip{font-family:var(--f-mono);font-size:12px;color:var(--ink);border:1px solid var(--line-strong);border-radius:3px;padding:6px 10px;background:var(--surface-2)}
.chip b{color:var(--teal);font-weight:600}

.people{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:820px){.people{grid-template-columns:1fr}}
.person{border:1px solid var(--line);border-radius:6px;background:var(--surface);padding:22px}
.person .ptop{display:flex;align-items:center;justify-content:space-between;gap:14px}
.person .avatar{width:76px;height:76px;flex:0 0 auto;border-radius:50%;object-fit:cover;object-position:center top;
  border:2px solid var(--line-strong);background:var(--surface-2)}
.person .yrs{font-family:var(--f-display);font-weight:800;font-size:34px;letter-spacing:-.02em;color:var(--teal);line-height:1}
.person .yrs span{font-size:15px;color:var(--muted);font-weight:600}
.person h3{margin-top:14px;font-size:18px}
.person .role{font-family:var(--f-mono);font-size:12px;color:var(--brass);margin-top:4px}
.person p{margin-top:10px;color:var(--muted);font-size:14px}
.person a{font-size:13px;font-family:var(--f-mono)}

.cat{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:6px;overflow:hidden}
@media(max-width:820px){.cat{grid-template-columns:1fr}}
.catcell{background:var(--surface);padding:22px 22px}
.catcell h3{font-size:16px}
.catcell .tag{margin-bottom:12px;display:inline-block}
.catcell p{margin-top:8px;color:var(--muted);font-size:14px}

.cta{background:var(--ink)}
.cta .wrap{padding:clamp(52px,7vw,86px) clamp(20px,5vw,48px);text-align:center}
.cta h2{color:var(--ground);font-size:clamp(30px,4.6vw,52px);line-height:1.03;max-width:16em;margin:0 auto}
:root[data-theme="dark"] .cta h2{color:var(--ink)}
@media(prefers-color-scheme:dark){.cta h2{color:var(--ink)}}
:root[data-theme="light"] .cta h2{color:var(--ground)}
.cta p{margin:20px auto 0;max-width:38em;color:color-mix(in srgb,var(--ground) 72%,transparent)}
:root[data-theme="dark"] .cta p{color:var(--muted)}
.cta .row{margin-top:32px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.cta .mono{margin-top:24px;font-family:var(--f-mono);font-size:13px;color:color-mix(in srgb,var(--ground) 60%,transparent)}
:root[data-theme="dark"] .cta .mono{color:var(--faint)}

footer{border-top:1px solid var(--line);background:var(--surface)}
footer .wrap{padding:28px 0;display:flex;gap:16px;align-items:center;flex-wrap:wrap;font-size:13px;color:var(--muted)}
footer .brand{font-size:15px}
footer .brand .logo{height:26px}
footer nav{margin-left:auto;display:flex;gap:20px;font-family:var(--f-mono);font-size:12px}

.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
:focus-visible{outline:2px solid var(--teal);outline-offset:3px;border-radius:2px}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .scan::after{animation:none;opacity:.5}
  .reveal{opacity:1;transform:none;transition:none}
}