:root{
  --bg:#121113; --surface:#1B191D; --ink:#F2EFEA; --muted:#A39E96; --line:#2A272C;
  --accent:#B46BCC; --accent-ink:#121113; --tag:#2A2130;
  --mono:"JetBrains Mono",ui-monospace,Menlo,monospace;
  --sans:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  --serif:Georgia,"Times New Roman",serif;
}
:root[data-theme="light"]{--bg:#FAF8F3; --surface:#FFFFFF; --ink:#141414; --muted:#6B6760; --line:#E4E0D6; --accent:#9A48B5; --accent-ink:#ffffff; --tag:#F1ECF7;}
.logo{filter:invert(1)}
:root[data-theme="light"] .logo{filter:none}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 var(--sans);-webkit-font-smoothing:antialiased}
a{color:inherit;text-underline-offset:3px}
img{max-width:100%;display:block}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
.narrow{max-width:680px;margin:0 auto;padding:0 20px}

/* nav */
.nav{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:60px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.01em;text-decoration:none}
.brand img{height:28px;width:auto}
.nav ul{display:flex;gap:20px;list-style:none;margin:0;padding:0;font-size:14px}
.nav ul a{text-decoration:none;color:var(--muted)}
.nav ul a:hover{color:var(--ink)}
.nav ul a{white-space:nowrap}
@media (max-width:640px){.nav ul li.hide-sm{display:none}.nav ul{gap:14px;font-size:13px}}

/* type */
.eyebrow{font:500 12px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
h1{font-size:clamp(40px,7vw,76px);line-height:1.02;letter-spacing:-.035em;margin:18px 0 18px;font-weight:750}
h2{font-size:clamp(28px,4vw,40px);line-height:1.1;letter-spacing:-.025em;margin:0 0 16px}
h3{font-size:20px;letter-spacing:-.01em;margin:0 0 8px}
.lede{font-size:20px;color:var(--muted);max-width:620px}
.small{font-size:13px;color:var(--muted)}
.mono{font-family:var(--mono)}

/* hero */
.hero{padding:88px 0 72px}
.hero-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center}
.hero-logo{justify-self:center;width:min(280px,70vw);image-rendering:pixelated;filter:drop-shadow(0 18px 30px rgba(0,0,0,.12))}
@media (max-width:760px){.hero-grid{grid-template-columns:1fr}.hero-logo{order:-1;width:160px;justify-self:start}}
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);padding:13px 22px;border-radius:999px;font-weight:600;text-decoration:none;margin-top:22px}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line);margin-left:8px}
.under{margin-top:12px;font:13px var(--mono);color:var(--muted)}

section{padding:72px 0;border-top:1px solid var(--line)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;margin-top:28px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:22px}
.card p{margin:0;color:var(--muted);font-size:15.5px}
.card .eyebrow{display:block;margin-bottom:10px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-top:28px}
.stat b{display:block;font-size:34px;letter-spacing:-.03em;line-height:1.1}
.stat span{color:var(--muted);font-size:15px}
.aside{font-family:var(--serif);font-style:italic;color:var(--muted);border-left:3px solid var(--accent);padding:4px 0 4px 16px;margin:28px 0}
.letter{font-family:var(--serif);font-size:19px;line-height:1.7}
.letter p{margin:0 0 18px}
.sig{font:14px var(--mono);color:var(--muted)}

/* notes list */
.notes{display:grid;gap:14px;margin-top:28px}
.note{display:grid;grid-template-columns:110px 1fr auto;gap:18px;align-items:baseline;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:20px 22px;text-decoration:none}
.note:hover{border-color:var(--accent)}
.note p{margin:4px 0 0;color:var(--muted);font-size:15px}
.tag{font:12px var(--mono);background:var(--tag);color:var(--accent);padding:4px 8px;border-radius:6px;white-space:nowrap}
@media (max-width:640px){.note{grid-template-columns:1fr}}

/* article */
article{padding:64px 0 40px}
article h1{font-size:clamp(34px,5.5vw,54px)}
article .meta{font:13px var(--mono);color:var(--muted);margin-bottom:36px}
article .body{font-family:var(--serif);font-size:19px;line-height:1.75}
article .body p{margin:0 0 22px}
article .body h2{font-family:var(--sans);font-size:24px;margin:44px 0 14px}
article .body h3{font-family:var(--sans);font-size:18px;margin:30px 0 8px}
article .body ol,article .body ul{padding-left:22px;margin:0 0 22px}
article .body li{margin-bottom:10px}
article .body blockquote{margin:0 0 22px;padding:2px 0 2px 18px;border-left:3px solid var(--line);color:var(--muted)}
sup a{text-decoration:none;color:var(--accent);font-family:var(--mono);font-size:12px}
.sources{font:14px/1.6 var(--sans);color:var(--muted);border-top:1px solid var(--line);padding-top:24px;margin-top:40px}
.sources ol{padding-left:20px}
.sources li{margin-bottom:8px;word-break:break-word}

/* hand-o-meter */
.guess{background:var(--surface);border:1px dashed var(--accent);border-radius:14px;padding:20px 22px;margin:40px 0;font-family:var(--sans)}
.guess summary{cursor:pointer;font-weight:600;list-style:none}
.guess summary::-webkit-details-marker{display:none}
.guess summary::after{content:" → reveal";font:13px var(--mono);color:var(--accent)}
.guess[open] summary::after{content:""}
.guess p{margin:12px 0 0;color:var(--muted);font-size:15.5px}
.meter{font-family:var(--mono);letter-spacing:2px;color:var(--accent)}

footer{border-top:1px solid var(--line);padding:40px 0 60px;color:var(--muted);font-size:14px}
footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}