:root{
  --paper:#F6F1E8;
  --ink:#0E0F0D;
  --ink-soft:#2A2C28;
  --muted:#6B685F;
  --teal:#1F6B74;
  --amber:#D68C2C;
  --serif:'Instrument Serif','Times New Roman',serif;
  --sans:'Inter Tight',-apple-system,system-ui,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--paper);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;font-feature-settings:"ss01","ss02","cv11";line-height:1.6;font-size:16px}
a{color:var(--teal);text-decoration:underline;text-underline-offset:2px}
a:hover{color:var(--amber)}
.wrap{max-width:740px;margin:0 auto;padding:0 32px}
@media (max-width:720px){.wrap{padding:0 22px}}
nav{position:sticky;top:0;z-index:50;background:color-mix(in srgb, var(--paper) 88%, transparent);backdrop-filter:saturate(160%) blur(14px);border-bottom:1px solid color-mix(in srgb, var(--ink) 10%, transparent)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:18px 0}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:26px;letter-spacing:-0.02em;color:var(--ink);text-decoration:none}
.brand-mark{width:28px;height:28px;border-radius:7px;background:var(--ink);display:grid;place-items:center;overflow:hidden}
.brand-mark img{width:100%;height:100%;object-fit:cover}
.brand span i{font-style:italic;color:var(--teal)}
.nav-back{font-size:13px;color:var(--ink-soft);text-decoration:none}
.nav-back:hover{color:var(--teal)}
main{padding:64px 0 96px}
h1{font-family:var(--serif);font-size:clamp(40px,6vw,64px);line-height:1.02;letter-spacing:-0.025em;font-weight:400;margin-bottom:12px}
.effective{font-family:var(--mono);font-size:11px;letter-spacing:0.12em;text-transform:uppercase;color:var(--muted);margin-bottom:48px}
h2{font-family:var(--serif);font-size:28px;line-height:1.15;letter-spacing:-0.015em;font-weight:400;margin:56px 0 14px;color:var(--ink)}
h3{font-family:var(--sans);font-size:16px;font-weight:600;margin:28px 0 10px;color:var(--ink)}
p{margin:0 0 18px;color:var(--ink-soft);max-width:65ch}
ul,ol{margin:0 0 22px 1.3em;color:var(--ink-soft)}
li{margin-bottom:8px}
li > p{margin-bottom:6px}
strong{color:var(--ink);font-weight:600}
em{font-style:italic}
code{font-family:var(--mono);font-size:13px;background:color-mix(in srgb, var(--ink) 6%, transparent);padding:2px 6px;border-radius:4px}
hr{border:none;height:1px;background:color-mix(in srgb, var(--ink) 12%, transparent);margin:48px 0}
footer{border-top:1px solid color-mix(in srgb, var(--ink) 12%, transparent);padding:28px 0 40px;font-size:12px;color:var(--muted);font-family:var(--mono);letter-spacing:0.05em}
footer a{color:var(--muted);margin-right:16px}
footer a:hover{color:var(--ink)}