/* Self-hosted fonts (SIL Open Font License 1.1 — see /fonts/LICENSE-*.txt).
   Same families and weights the site previously loaded from Google Fonts. */
@font-face{font-family:"Spectral";font-style:normal;font-weight:300;font-display:swap;src:url("/fonts/spectral-latin-300-normal.woff2") format("woff2")}
@font-face{font-family:"Spectral";font-style:normal;font-weight:400;font-display:swap;src:url("/fonts/spectral-latin-400-normal.woff2") format("woff2")}
@font-face{font-family:"Spectral";font-style:normal;font-weight:600;font-display:swap;src:url("/fonts/spectral-latin-600-normal.woff2") format("woff2")}
@font-face{font-family:"Spectral";font-style:italic;font-weight:300;font-display:swap;src:url("/fonts/spectral-latin-300-italic.woff2") format("woff2")}
@font-face{font-family:"Spectral";font-style:italic;font-weight:400;font-display:swap;src:url("/fonts/spectral-latin-400-italic.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:400;font-display:swap;src:url("/fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:500;font-display:swap;src:url("/fonts/ibm-plex-sans-latin-500-normal.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:400;font-display:swap;src:url("/fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:500;font-display:swap;src:url("/fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2")}

/* ===== Original site styles (moved unchanged from index.html) ===== */
:root{
  --ink:#0B0E14;        /* observation-room dark */
  --abyss:#121826;      /* raised surface */
  --line:#232B3D;       /* hairline on dark */
  --paper:#E9E4D8;      /* aged paper */
  --dim:#8B93A7;        /* instrument gray */
  --blade:#D7B151;      /* the cut — series gold (new-edition covers) */
  --blade-soft:rgba(215,177,81,.14);
  --max:1120px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}
body{
  background:var(--ink);color:var(--paper);
  font:400 1.0625rem/1.7 "IBM Plex Sans",system-ui,-apple-system,sans-serif;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--blade);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
:focus-visible{outline:2px solid var(--blade);outline-offset:3px;border-radius:2px}
.skip{position:absolute;left:-9999px;top:0;background:var(--blade);color:var(--ink);padding:.6rem 1rem;z-index:99}
.skip:focus{left:1rem;top:1rem}
.wrap{max-width:var(--max);margin:0 auto;padding:0 clamp(1.1rem,4vw,2rem)}
.mono{font-family:"IBM Plex Mono",ui-monospace,monospace;letter-spacing:.14em;text-transform:uppercase;font-size:.72rem;color:var(--dim)}
h1,h2,h3{font-family:"Spectral",Georgia,serif;font-weight:600;line-height:1.15;text-wrap:balance}
h1{font-size:clamp(2.4rem,6vw,4.2rem);font-weight:300}
h1 em{font-style:italic;color:var(--blade)}
h2{font-size:clamp(1.7rem,3.6vw,2.5rem);margin-bottom:.6rem}
h3{font-size:1.35rem}
p.lede{color:var(--dim);max-width:56ch}

/* The Cut — signature divider: a rule sliced at center, halves slipping apart */
.cut{position:relative;height:14px;margin:clamp(3rem,8vw,5.5rem) auto;max-width:var(--max);padding:0 clamp(1.1rem,4vw,2rem)}
.cut::before,.cut::after{content:"";position:absolute;top:50%;width:calc(50% - 26px);height:1px;background:linear-gradient(90deg,transparent,var(--blade) 30%,var(--blade))}
.cut::before{left:clamp(1.1rem,4vw,2rem);transform:translateY(-3px)}
.cut::after{right:clamp(1.1rem,4vw,2rem);transform:translateY(3px);background:linear-gradient(270deg,transparent,var(--blade) 30%,var(--blade))}

/* Header */
header.site{position:sticky;top:0;z-index:50;background:rgba(11,14,20,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:1.4rem;height:64px}
.brand{display:flex;align-items:center;gap:.65rem;color:var(--paper);font-family:"Spectral",serif;font-weight:600;letter-spacing:.06em}
.brand img{width:36px;height:36px}
.nav nav{display:flex;gap:1.4rem;margin-left:auto}
.nav nav a{color:var(--dim);font-size:.92rem}
.nav nav a:hover{color:var(--paper);text-decoration:none}
.btn{display:inline-block;padding:.72rem 1.35rem;border:1px solid var(--blade);color:var(--blade);border-radius:2px;font-size:.95rem;letter-spacing:.02em;transition:background .2s,color .2s}
.btn:hover{background:var(--blade);color:var(--ink);text-decoration:none}
.btn.solid{background:var(--blade);color:var(--ink)}
.btn.solid:hover{background:#e2c46a}
.btn.sm{padding:.5rem .95rem;font-size:.85rem}
.nav .btn{margin-left:.4rem}
@media(max-width:820px){.nav nav{display:none}.nav .btn{margin-left:auto}}

/* Hero */
.hero{position:relative;overflow:hidden;padding:clamp(3.5rem,9vw,6.5rem) 0 clamp(2.5rem,6vw,4rem)}
.hero::before{content:"";position:absolute;inset:0;background:url("/hero-bg.jpg") center/cover no-repeat;opacity:.55;z-index:0}
.hero::after{content:"";position:absolute;inset:0;z-index:0;background:linear-gradient(180deg,rgba(11,14,20,.72) 0%,rgba(11,14,20,.55) 45%,var(--ink) 100%)}
.hero > *{position:relative;z-index:1}
.hero .portrait-hero{justify-self:end;width:min(300px,70vw);height:auto;border-radius:4px;box-shadow:0 30px 60px rgba(0,0,0,.6),0 0 0 1px var(--line)}
.hero .enso{position:absolute;right:-8%;top:50%;transform:translateY(-50%);width:min(62vw,640px);opacity:.05;pointer-events:none;user-select:none}
.hero .grid{display:grid;grid-template-columns:1.25fr .75fr;gap:clamp(2rem,5vw,4rem);align-items:center;position:relative}
.hero .eyebrow{margin-bottom:1.1rem;color:var(--blade)}
.hero .tag{font-family:"Spectral",serif;font-style:italic;font-size:1.2rem;color:var(--paper);margin:1.2rem 0 .9rem}
.hero p.lede{margin-bottom:1.8rem}
.cta-row{display:flex;flex-wrap:wrap;gap:.9rem}
.hero .cover{justify-self:center;width:min(300px,70vw);height:auto;border-radius:3px;box-shadow:0 30px 60px rgba(0,0,0,.55),0 0 0 1px var(--line);transform:rotate(2deg)}
@media(max-width:820px){.hero .grid{grid-template-columns:1fr}.hero .portrait-hero{order:-1;justify-self:center;width:min(230px,60vw)}}

/* News strip */
.news{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--abyss)}
.news .wrap{display:flex;flex-wrap:wrap;gap:.5rem 1.6rem;align-items:baseline;padding-top:.85rem;padding-bottom:.85rem}
.news strong{color:var(--blade);font-weight:500}
.news span{color:var(--dim);font-size:.95rem}

/* Books */
.section{padding-top:.5rem}
.section .kicker{margin-bottom:.6rem}
.books{display:grid;gap:clamp(1.6rem,4vw,2.6rem);margin-top:2.2rem}
.book{display:grid;grid-template-columns:220px 1fr;gap:clamp(1.4rem,3.5vw,2.4rem);padding:clamp(1.4rem,3.5vw,2.2rem);background:var(--abyss);border:1px solid var(--line);border-radius:4px}
.book img{width:100%;height:auto;border-radius:3px;box-shadow:0 16px 34px rgba(0,0,0,.45)}
.badges{display:flex;flex-wrap:wrap;gap:.45rem;margin-bottom:.8rem}
.badge{font-family:"IBM Plex Mono",monospace;font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--dim);border:1px solid var(--line);padding:.28rem .6rem;border-radius:2px}
.badge.gold{color:var(--blade);border-color:var(--blade)}
.book blockquote{border-left:2px solid var(--blade);padding-left:1rem;margin:1.1rem 0 1.3rem;font-family:"Spectral",serif;font-style:italic;color:var(--paper)}
.buy{display:flex;flex-wrap:wrap;gap:.7rem}
.book .hook{color:var(--paper);font-weight:500;margin-bottom:.6rem}
.isbn{font-family:"IBM Plex Mono",monospace;font-size:.7rem;letter-spacing:.08em;color:var(--dim);margin-top:.95rem}
.book p{color:var(--dim)}
.book h3{color:var(--paper);margin-bottom:.5rem}
@media(max-width:720px){.book{grid-template-columns:1fr}.book img{width:min(200px,55vw)}}

/* Audiobook */
.audio{display:grid;grid-template-columns:300px 1fr;gap:clamp(1.6rem,4vw,3rem);align-items:start;margin-top:1.6rem;background:var(--abyss);border:1px solid var(--line);border-radius:6px;padding:clamp(1.5rem,4vw,2.4rem)}
.audio + .audio{margin-top:1.2rem}
.audio img{width:100%;height:auto;border-radius:4px;box-shadow:0 18px 40px rgba(0,0,0,.5)}
.audio h3{color:var(--paper);margin-bottom:.5rem}
.audio .facts{font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);margin-bottom:1rem}
.audio p{color:var(--dim)}
.audio .hook{color:var(--paper);font-weight:500;margin-bottom:.7rem}
.audio .listen{display:flex;flex-wrap:wrap;gap:.7rem;align-items:center;margin-top:1.3rem}
.audio .soon{color:var(--dim);font-size:.9rem;font-style:italic}
.audio .disclosure{margin-top:1.1rem;font-size:.87rem;color:var(--dim);border-top:1px solid var(--line);padding-top:.9rem}
.audio .also{margin-top:.8rem;font-size:.9rem}
@media(max-width:760px){.audio{grid-template-columns:1fr}.audio img{width:min(260px,65vw)}}

/* Arc */
.arc{margin-top:2.2rem;display:grid;gap:0;border-left:1px solid var(--line);padding-left:1.6rem}
.arc li{list-style:none;position:relative;padding:0 0 1.6rem 0}
.arc li:last-child{padding-bottom:0}
.arc li::before{content:"";position:absolute;left:calc(-1.6rem - 5px);top:.5rem;width:9px;height:9px;border-radius:50%;background:var(--ink);border:1px solid var(--blade)}
.arc li.done::before{background:var(--blade)}
.arc .n{font-family:"IBM Plex Mono",monospace;color:var(--blade);font-size:.75rem;letter-spacing:.14em;display:block;margin-bottom:.15rem}
.arc .t{font-family:"Spectral",serif;font-weight:600;font-size:1.1rem}
.arc .d{color:var(--dim);font-size:.95rem}

/* Themes */
.themes{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.1rem;margin-top:2.2rem}
.theme{border:1px solid var(--line);border-radius:4px;padding:1.4rem;background:var(--abyss)}
.theme h3{font-size:1.08rem;margin-bottom:.5rem;color:var(--blade);font-weight:600}
.theme p{color:var(--dim);font-size:.97rem}

/* Mark */
.mark-sec{display:grid;grid-template-columns:260px 1fr;gap:clamp(1.6rem,4vw,3rem);align-items:center;margin-top:2.2rem}
.mark-sec img{width:100%}
.mark-sec p{color:var(--dim);max-width:60ch}
@media(max-width:680px){.mark-sec{grid-template-columns:1fr}.mark-sec img{width:180px}}

/* About */
.about{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(1.8rem,4.5vw,3.4rem);align-items:start;margin-top:2.2rem}
.about figure img{border-radius:4px;border:1px solid var(--line)}
.about figcaption{font-size:.85rem;color:var(--dim);margin-top:.6rem}
.about .txt p{color:var(--dim);margin-bottom:1rem}
.about .txt strong{color:var(--paper)}
.about .portrait{width:min(190px,50vw);float:right;margin:0 0 1rem 1.4rem;border-radius:4px;border:1px solid var(--line)}
@media(max-width:820px){.about{grid-template-columns:1fr}}

/* Reader list */
.list-sec{background:var(--abyss);border:1px solid var(--line);border-radius:6px;padding:clamp(2rem,5vw,3.2rem);margin-top:2.2rem;position:relative;overflow:hidden}
.list-sec .enso{position:absolute;right:clamp(1.5rem,4vw,3rem);top:50%;transform:translateY(-50%);width:min(220px,26%);height:auto;opacity:.09;pointer-events:none}
@media(max-width:820px){.list-sec .enso{display:none}}
.list-sec h2{margin-bottom:.4rem}
.list-sec p{color:var(--dim);max-width:52ch}
.list-form{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:1.4rem}
.list-form input[type=email]{flex:1 1 260px;background:var(--ink);border:1px solid var(--line);color:var(--paper);padding:.72rem 1rem;border-radius:2px;font:inherit}
.list-form input[type=email]::placeholder{color:var(--dim)}
.list-fallback{margin-top:1.4rem}
.hide{display:none}

/* Connect + footer */
.social{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:1.6rem}
footer.site{border-top:1px solid var(--line);margin-top:clamp(3rem,8vw,5.5rem);padding:2.2rem 0 2.6rem}
footer .wrap{display:flex;flex-wrap:wrap;gap:1rem 2rem;align-items:center;justify-content:space-between}
footer .tag{font-family:"Spectral",serif;font-style:italic;color:var(--dim)}
footer nav{display:flex;gap:1.3rem}
footer nav a{color:var(--dim);font-size:.9rem}
footer .fine{width:100%;color:var(--dim);font-size:.82rem;margin-top:.4rem}
footer .fmark{width:64px;height:auto}

/* ===== Added 2026-10-21 (SEO / performance / mobile pass) ===== */

/* Images: keep aspect ratio once width/height attributes are set; <picture> adds no box */
img{height:auto}
picture{display:contents}
picture > source{display:none} /* <source> must not become a grid/flex item */

/* Hero background: WebP first, original JPEG for older browsers */
.hero::before{background-image:image-set(url("/img/hero-bg-1600.webp") type("image/webp"),url("/hero-bg.jpg") type("image/jpeg"))}
@media(max-width:820px){.hero::before{background-image:image-set(url("/img/hero-bg-900.webp") type("image/webp"),url("/hero-bg.jpg") type("image/jpeg"))}}

/* Series line now sits inside the H1 — styled exactly as the old paragraph */
h1 .eyebrow{display:block;font-weight:400;line-height:1.7;text-wrap:wrap}

/* Mobile menu (replaces the hidden nav below 820px) */
.menu{display:none;position:relative;margin-left:auto}
.menu summary{list-style:none;cursor:pointer;display:inline-block;padding:.5rem .95rem;border:1px solid var(--blade);color:var(--blade);border-radius:2px;font-size:.85rem;letter-spacing:.02em}
.menu summary::-webkit-details-marker{display:none}
.menu[open] summary{background:var(--blade);color:var(--ink)}
.menu .panel{position:absolute;right:0;top:calc(100% + .6rem);gap:0;margin:0;min-width:15rem;background:var(--abyss);border:1px solid var(--line);border-radius:4px;padding:.4rem;display:flex;flex-direction:column;box-shadow:0 18px 40px rgba(0,0,0,.5)}
.menu .panel a{color:var(--paper);padding:.75rem .9rem;border-radius:2px;font-size:.95rem}
.menu .panel a:hover{background:var(--blade-soft);text-decoration:none}
.menu .panel a.join{color:var(--blade)}
@media(max-width:820px){.menu{display:block}.nav > .btn{display:none}}

/* Links into the book pages */
.book h3 a{color:inherit}
.book h3 a:hover{color:var(--blade);text-decoration:none}
.book .more{margin-top:.55rem;font-size:.92rem}
.arc .t a{color:var(--paper)}
.arc .t a:hover{color:var(--blade);text-decoration:none}
.arc li[aria-current] .t{color:var(--blade)}
.contact{margin-top:1.4rem;color:var(--dim)}
/* Links inside running text get an underline so they are not told apart by colour alone */
.audio .also a,.contact a,.list-fallback a,.lede a{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
footer .books-nav{width:100%;display:flex;flex-wrap:wrap;gap:.4rem 1.3rem}
footer .books-nav a{color:var(--dim);font-size:.88rem}

/* ===== Book pages ===== */
.crumbs{padding-top:1.4rem}
.crumbs ol{display:flex;flex-wrap:wrap;gap:.35rem;list-style:none;font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--dim)}
.crumbs li + li::before{content:"›";margin-right:.35rem;color:var(--line)}
.crumbs a{color:var(--dim)}
.crumbs a:hover{color:var(--paper)}
.book-hero{display:grid;grid-template-columns:minmax(0,340px) 1fr;gap:clamp(1.8rem,4.5vw,3.4rem);align-items:start;padding:clamp(1.6rem,4vw,2.6rem) 0 0}
.book-hero .cover{width:100%;border-radius:3px;box-shadow:0 30px 60px rgba(0,0,0,.55),0 0 0 1px var(--line)}
.book-hero h1{font-size:clamp(2rem,4.6vw,3.2rem);font-weight:300;margin:.2rem 0 .5rem}
.book-hero .by{margin-bottom:1.2rem}
.book-hero .hook{color:var(--paper);font-weight:500;margin-bottom:.7rem}
.book-hero p{color:var(--dim)}
.book-hero blockquote{border-left:2px solid var(--blade);padding-left:1rem;margin:1.1rem 0 1.3rem;font-family:"Spectral",serif;font-style:italic;color:var(--paper)}
.book-hero .buy{margin-top:1.4rem}
@media(max-width:760px){.book-hero{grid-template-columns:1fr}.book-hero .cover{width:min(240px,62vw)}}
.details{display:grid;grid-template-columns:max-content 1fr;gap:.55rem 1.6rem;margin-top:1.6rem;background:var(--abyss);border:1px solid var(--line);border-radius:4px;padding:clamp(1.2rem,3vw,1.8rem)}
.details dt{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);padding-top:.2rem}
.details dd{color:var(--paper)}
@media(max-width:560px){.details{grid-template-columns:1fr;gap:.15rem}.details dd{margin-bottom:.7rem}}
.pager{display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem;margin-top:2.2rem}
.pager a{display:block;max-width:100%;border:1px solid var(--line);border-radius:4px;padding:.9rem 1.1rem;background:var(--abyss)}
.pager a:hover{border-color:var(--blade);text-decoration:none}
.pager .mono{display:block;margin-bottom:.2rem}
.pager .next{margin-left:auto;text-align:right}
.cta{margin-top:1.4rem}
.notfound{padding:clamp(3rem,9vw,6rem) 0 1rem}
.notfound h1{font-size:clamp(2.2rem,5vw,3.4rem);margin-bottom:.8rem}