/* The Tract — night-navy ground taken from the book cover, gold rules, serif display.
   Deliberately single-theme (dark), matching the cover art. */
:root{
  --night:#0B1530; --night-2:#111D3D; --night-3:#18264D; --line:#26355F;
  --ink:#E9ECF4; --muted:#A3ACC4; --gold:#D6A85A; --gold-2:#F0CC86; --spark:#7FB2FF;
  --f-display:"Cormorant Garamond", "Iowan Old Style", Georgia, serif;
  --f-serif:"Source Serif 4", Georgia, serif;
  --f-sans:"IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--night);color:var(--ink);font-family:var(--f-serif);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--gold-2)}
a:focus-visible,button:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
img{max-width:100%;display:block}
.wrap{max-width:1040px;margin:0 auto;padding-inline:20px}
.eyebrow{font-family:var(--f-sans);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);font-weight:500}
h1,h2,h3{font-family:var(--f-display);font-weight:600;line-height:1.1;margin:0;text-wrap:balance;color:#fff}
h1{font-size:clamp(40px,7vw,72px);letter-spacing:-.01em}
h2{font-size:clamp(30px,4.4vw,44px)}
h3{font-size:24px}
p{margin:0}
.lede{font-size:clamp(18px,2.2vw,21px);color:var(--muted);max-width:36em}
.rule{display:flex;align-items:center;gap:12px;color:var(--gold);margin:0}
.rule::before,.rule::after{content:"";height:1px;flex:1;background:linear-gradient(90deg,transparent,var(--gold),transparent)}
.rule span{font-size:10px}

/* nav */
.nav{position:sticky;top:0;z-index:10;background:rgba(11,21,48,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:14px;padding-top:calc(14px + env(safe-area-inset-top,0px))}
.brand{font-family:var(--f-display);font-size:24px;font-weight:600;color:#fff;text-decoration:none;letter-spacing:.02em}
.brand i{color:var(--gold);font-style:normal}
.nav ul{display:flex;gap:22px;list-style:none;margin:0;padding:0;font-family:var(--f-sans);font-size:14px}
.nav ul a{color:var(--muted);text-decoration:none}
.nav ul a:hover{color:#fff}
@media (max-width:640px){.nav ul li.opt{display:none}.nav ul{gap:16px}}

/* buttons */
.btns{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--f-sans);font-size:15px;font-weight:600;padding:13px 22px;border-radius:999px;text-decoration:none;border:1px solid transparent;cursor:pointer}
.btn.primary{background:var(--gold);color:#1A1406}
.btn.primary:hover{background:var(--gold-2)}
.btn.ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn.ghost:hover{border-color:var(--gold)}
.btn small{font-weight:400;opacity:.75}

section{padding-block:clamp(56px,9vw,104px)}
.sec-h{display:flex;flex-direction:column;gap:12px;margin-bottom:32px}

/* hero */
.hero{position:relative;overflow:hidden;padding-block:clamp(64px,12vw,140px) clamp(56px,9vw,96px)}
.hero canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.55;pointer-events:none}
.hero .wrap{position:relative;display:flex;flex-direction:column;gap:22px}
.hero h1 em{font-style:italic;color:var(--gold-2);font-weight:500}

/* two meanings */
.meanings{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.meaning{border-top:1px solid var(--gold);padding-top:18px;display:flex;flex-direction:column;gap:8px}
.meaning .w{font-family:var(--f-display);font-size:28px;color:#fff}
.meaning .w span{font-family:var(--f-sans);font-size:12px;color:var(--muted);letter-spacing:.06em;margin-left:8px}
.meaning p{color:var(--muted)}
@media (max-width:640px){.meanings{grid-template-columns:1fr}}

/* book feature */
.feature{display:grid;grid-template-columns:minmax(0,300px) minmax(0,1fr);gap:clamp(28px,6vw,64px);align-items:center}
.cover{border-radius:4px;box-shadow:0 30px 60px -20px rgba(0,0,0,.7),0 0 0 1px rgba(214,168,90,.25);aspect-ratio:910/1287;width:100%;height:auto}
.feature .txt{display:flex;flex-direction:column;gap:18px}
.facts{display:flex;flex-wrap:wrap;gap:10px 22px;font-family:var(--f-sans);font-size:14px;color:var(--muted)}
.facts b{color:#fff;font-weight:600}
@media (max-width:720px){.feature{grid-template-columns:1fr}.feature .cover{max-width:260px}}

/* panels */
.panel{background:var(--night-2);border:1px solid var(--line);border-radius:14px;padding:clamp(22px,4vw,36px)}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
@media (max-width:720px){.grid2{grid-template-columns:1fr}}
.about{display:flex;flex-direction:column;gap:14px}
.cred{font-family:var(--f-sans);font-size:13.5px;color:var(--gold);letter-spacing:.02em}

/* contents */
.toc{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 40px}
.toc h3{font-size:22px;margin-bottom:8px}
.toc h3 small{display:block;font-family:var(--f-sans);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--gold);margin-bottom:4px;font-weight:500}
.toc ol{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:6px;font-size:16px}
.toc li{position:relative;padding-left:30px;color:var(--ink)}
.toc li b{position:absolute;left:0;top:3px;font-family:var(--f-sans);font-size:13px;color:var(--muted);font-weight:500}
.toc li span{color:var(--muted)}
@media (max-width:720px){.toc{grid-template-columns:1fr}}

/* cite */
.cite{font-family:var(--f-serif);font-size:15.5px;color:var(--ink);background:var(--night);border:1px solid var(--line);border-radius:10px;padding:16px;word-break:break-word}
.copy{margin-top:12px}
.note{font-family:var(--f-sans);font-size:13.5px;color:var(--muted)}
dl.meta{display:grid;grid-template-columns:max-content minmax(0,1fr);gap:8px 18px;margin:0;font-family:var(--f-sans);font-size:14px}
dl.meta dt{color:var(--muted)} dl.meta dd{margin:0;color:var(--ink)}

footer{border-top:1px solid var(--line);padding-block:36px calc(36px + env(safe-area-inset-bottom,0px));font-family:var(--f-sans);font-size:13.5px;color:var(--muted)}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.hero canvas{display:none}}

/* book cards on home */
.books{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.bookcard{display:grid;grid-template-columns:minmax(0,150px) minmax(0,1fr);gap:22px;align-items:start;background:var(--night);border:1px solid var(--line);border-radius:14px;padding:22px}
.bookcard .txt{display:flex;flex-direction:column;gap:12px}
.bookcard h3 a{color:#fff;text-decoration:none}
.bookcard p{color:var(--muted);font-size:16px}
.bookcard .btn{padding:10px 18px;font-size:14px}
@media (max-width:900px){.books{grid-template-columns:1fr}}
@media (max-width:480px){.bookcard{grid-template-columns:1fr}.bookcard .cover{max-width:180px}}