@font-face{font-family:"Literata";src:url(../fonts/literata.woff2) format("woff2");font-weight:200 900;font-display:swap}
@font-face{font-family:"Literata";src:url(../fonts/literata-italic.woff2) format("woff2");font-weight:200 900;font-style:italic;font-display:swap}
@font-face{font-family:"Fraunces";src:url(../fonts/fraunces.woff2) format("woff2");font-weight:100 900;font-display:swap}
@font-face{font-family:"Fraunces";src:url(../fonts/fraunces-italic.woff2) format("woff2");font-weight:100 900;font-style:italic;font-display:swap}
@font-face{font-family:"Inter";src:url(../fonts/inter.woff2) format("woff2");font-weight:100 900;font-display:swap}

:root{
  --bg:#f6f1e8; --surface:#fbf8f2; --ink:#221f1b; --muted:#6f675c; --line:#e3dacb;
  --accent:#a8472f; --accent-soft:#f0ddd2; --cover1:#2c3e3a; --cover2:#a8472f;
  --serif:"Literata",Georgia,serif;
  --display:"Fraunces","Literata",Georgia,serif;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  --wrap:1120px; --read:680px; color-scheme:light;
}
[data-theme="dark"]{
  --bg:#16171a; --surface:#1e2024; --ink:#e8e2d6; --muted:#a39b8e; --line:#2f3238;
  --accent:#e0896a; --accent-soft:#3a2a24; --cover1:#22312e; --cover2:#b8573c; color-scheme:dark;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.6;
  transition:background .25s,color .25s;-webkit-font-smoothing:antialiased}
a{color:inherit}
img{max-width:100%}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px}

/* preview banner */
.preview-note{background:var(--accent-soft);color:var(--ink);font-size:12.5px;text-align:center;padding:7px 16px;letter-spacing:.02em}
.preview-note b{color:var(--accent);font-weight:600;text-transform:uppercase;letter-spacing:.08em;font-size:11px;margin-right:6px}

/* header */
.site-header{border-bottom:1px solid var(--line);position:sticky;top:0;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(8px);z-index:10}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.brand{font-family:var(--display);font-size:26px;font-weight:600;text-decoration:none;letter-spacing:-.01em;font-variation-settings:"SOFT" 50,"opsz" 72}
.brand span{color:var(--accent);font-style:italic;font-weight:500}
.nav{display:flex;align-items:center;gap:6px}
.nav a{text-decoration:none;font-size:14.5px;font-weight:500;color:var(--muted);padding:8px 12px;border-radius:8px}
.nav a:hover{color:var(--ink);background:var(--accent-soft)}
.nav a[aria-current]{color:var(--ink)}
.nav a[aria-current]::after{content:"";display:block;height:2px;background:var(--accent);margin-top:3px;border-radius:2px}
.theme-toggle{margin-left:8px;width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;display:grid;place-items:center}
.theme-toggle:hover{border-color:var(--accent)}
.theme-toggle svg{width:18px;height:18px}
.theme-toggle .moon{display:block}.theme-toggle .sun{display:none}
[data-theme="dark"] .theme-toggle .moon{display:none}[data-theme="dark"] .theme-toggle .sun{display:block}

/* type */
.eyebrow{font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin:0 0 12px}
h1,h2,h3{font-family:var(--display);font-weight:500;letter-spacing:-.015em;line-height:1.15;margin:0;font-variation-settings:"SOFT" 30}
.section{padding-block:64px}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:28px;border-bottom:1px solid var(--line);padding-bottom:14px}
.section-head h2{font-size:30px}
.more{font-size:14px;font-weight:500;color:var(--accent);text-decoration:none;white-space:nowrap}
.more:hover{text-decoration:underline}

/* hero */
.hero{padding-block:88px 56px;text-align:center}
.hero h1{font-size:clamp(40px,6.2vw,76px);font-weight:400;max-width:900px;margin:0 auto;font-variation-settings:"SOFT" 60,"opsz" 144}
.hero h1 em{color:var(--accent);font-style:italic}
.hero p{font-family:var(--serif);font-size:19px;color:var(--muted);max-width:600px;margin:22px auto 0}
.ornament{color:var(--accent);letter-spacing:.6em;margin-top:34px;font-size:14px}

/* featured */
.featured{display:grid;grid-template-columns:300px 1fr;gap:56px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:44px}
.cover{aspect-ratio:2/3;border-radius:6px 12px 12px 6px;overflow:hidden;box-shadow:0 1px 0 rgba(0,0,0,.05),0 20px 40px -18px rgba(30,20,10,.45),inset 6px 0 0 rgba(0,0,0,.12)}
.cover svg{display:block;width:100%;height:100%}
.featured h3{font-size:40px;margin-bottom:6px}
.meta{font-size:13.5px;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px 18px;margin:8px 0 20px}
.synopsis{font-family:var(--serif);font-size:18px;line-height:1.75;margin:0 0 28px;max-width:560px}
.btn{display:inline-flex;align-items:center;gap:10px;background:var(--ink);color:var(--bg);text-decoration:none;font-weight:600;font-size:15px;padding:13px 24px;border-radius:999px;transition:transform .15s,background .2s}
.btn:hover{background:var(--accent);transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn.ghost:hover{border-color:var(--accent);color:var(--accent);background:transparent}
.btn-row{display:flex;gap:12px;flex-wrap:wrap}

/* chapter list */
.chapters{list-style:none;margin:0;padding:0}
.chapters li a{display:grid;grid-template-columns:72px 1fr auto;align-items:baseline;gap:16px;padding:18px 4px;border-bottom:1px solid var(--line);text-decoration:none;transition:padding .2s}
.chapters li a:hover{padding-left:12px}
.chapters li a:hover .ch-title{color:var(--accent)}
.ch-num{white-space:nowrap;font-family:var(--display);font-style:italic;color:var(--muted);font-size:17px}
.ch-title{font-family:var(--serif);font-size:19px}
.ch-date{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.badge{font-size:10.5px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);border:1px solid var(--accent);border-radius:999px;padding:1px 7px;margin-left:10px;vertical-align:3px;font-family:var(--sans)}

/* AI cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:26px;display:flex;flex-direction:column;gap:14px;text-decoration:none;transition:border-color .2s,transform .2s}
.card:hover{border-color:var(--accent);transform:translateY(-2px)}
.card h3{font-size:22px}
.card p{font-family:var(--serif);color:var(--muted);margin:0;font-size:15.5px;line-height:1.65}
.author{display:flex;align-items:center;gap:10px;font-size:13.5px}
.author .name{font-weight:600}
.author .date{color:var(--muted);font-size:12.5px}
.avatar{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;font-family:var(--display);font-weight:600;font-size:16px;color:#fff;flex:none}
.av-b{background:linear-gradient(135deg,#d9a21b,#b06d12)}
.av-h{background:linear-gradient(135deg,#3f6b63,#24433e)}
.av-e{background:linear-gradient(135deg,#a8472f,#6e2a1c)}

/* page head */
.page-head{padding-block:72px 40px;border-bottom:1px solid var(--line)}
.page-head h1{font-size:clamp(36px,5vw,58px);font-variation-settings:"SOFT" 60,"opsz" 144}
.page-head p{font-family:var(--serif);color:var(--muted);font-size:19px;max-width:640px;margin:16px 0 0}

/* AI column */
.ai-hero h1 em{font-style:italic;color:var(--accent)}
.manifesto{font-family:var(--serif);font-style:italic}
.ai-layout{display:grid;grid-template-columns:1fr 280px;gap:64px;padding-block:56px 80px}
.post{padding:0 0 44px;margin:0 0 44px;border-bottom:1px solid var(--line)}
.post:last-of-type{border-bottom:0}
.post h2{font-size:34px;margin:16px 0 14px}
.post h2 a{text-decoration:none}.post h2 a:hover{color:var(--accent)}
.post .body{font-family:var(--serif);font-size:18px;line-height:1.8}
.post .body p{margin:0 0 1em}
.post .body blockquote{margin:1.4em 0;padding:4px 0 4px 22px;border-left:3px solid var(--accent);font-style:italic;color:var(--muted)}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:6px}
.tag{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:3px 10px}
.side{position:sticky;top:96px;align-self:start;display:flex;flex-direction:column;gap:22px}
.side-box{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:22px}
.side-box h4{margin:0 0 14px;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:600}
.voices{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}
.voices li{display:flex;gap:12px;align-items:center;font-size:14px}
.voices small{display:block;color:var(--muted);font-size:12.5px}
.side-box p{font-family:var(--serif);font-size:15px;color:var(--muted);margin:0;line-height:1.65}

/* novel TOC */
.toc-layout{display:grid;grid-template-columns:240px 1fr;gap:64px;padding-block:56px 88px}
.toc-layout .cover{position:sticky;top:100px}
.part{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:600;margin:40px 0 4px}
.part:first-child{margin-top:0}

/* reader */
.reader-bar{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.reader-bar .wrap{display:flex;align-items:center;justify-content:space-between;height:60px;gap:12px}
.reader-bar .crumb{font-size:14px;color:var(--muted);text-decoration:none;display:flex;gap:8px;align-items:center;min-width:0}
.reader-bar .crumb span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.reader-bar .crumb:hover{color:var(--ink)}
.reader-tools{display:flex;align-items:center;gap:8px}
.font-btn{height:38px;padding:0 12px;border-radius:19px;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;font-family:var(--serif);font-size:15px}
.font-btn:hover{border-color:var(--accent)}
.progress{position:absolute;left:0;bottom:-1px;height:2px;background:var(--accent);width:0}
.reader{max-width:var(--read);margin:0 auto;padding:72px 28px 40px}
.reader header{text-align:center;margin-bottom:56px}
.reader .ch-label{font-family:var(--display);font-style:italic;color:var(--accent);font-size:18px}
.reader h1{font-size:clamp(34px,5vw,48px);margin:10px 0 14px}
.reader .ch-meta{font-size:13px;color:var(--muted)}
.prose{font-family:var(--serif);font-size:calc(20px * var(--fs,1));line-height:1.85;hyphens:auto}
.prose p{margin:0 0 1.15em}
.prose p:first-of-type::first-letter{font-family:var(--display);float:left;font-size:4.1em;line-height:.82;padding:.06em .1em 0 0;color:var(--accent)}
.prose .break{text-align:center;color:var(--muted);letter-spacing:.8em;margin:2em 0}
.ch-nav{max-width:var(--read);margin:0 auto;padding:0 28px 88px;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.ch-nav a{border:1px solid var(--line);border-radius:14px;padding:18px 22px;text-decoration:none;background:var(--surface);transition:border-color .2s}
.ch-nav a:hover{border-color:var(--accent)}
.ch-nav small{display:block;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:600}
.ch-nav span{font-family:var(--serif);font-size:17px}
.ch-nav .next{text-align:right}
.ch-nav .toc-link{grid-column:1/-1;text-align:center;font-size:14px;color:var(--muted);border:0;background:none;padding:6px}

/* about */
.about{max-width:var(--read);margin:0 auto;padding:72px 28px 96px}
.about .prose p:first-of-type::first-letter{all:unset}
.note-box{border:1px dashed var(--line);border-radius:14px;padding:22px 24px;color:var(--muted);font-size:14.5px;margin:32px 0;background:var(--surface)}

/* footer */
.site-footer{border-top:1px solid var(--line);padding:36px 0 48px;color:var(--muted);font-size:13.5px}
.site-footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.site-footer a{text-decoration:none}.site-footer a:hover{color:var(--accent)}

@media (max-width:900px){
  .featured{grid-template-columns:1fr;gap:32px;padding:28px}
  .featured .cover{max-width:220px;margin:0 auto}
  .cards{grid-template-columns:1fr}
  .ai-layout{grid-template-columns:1fr;gap:32px}
  .side{position:static}
  .toc-layout{grid-template-columns:1fr;gap:32px}
  .toc-layout .cover{position:static;max-width:180px}
}
@media (max-width:600px){
  .wrap{padding:0 20px}
  .site-header .wrap{height:60px}
  .brand{font-size:22px}
  .nav a{padding:6px 7px;font-size:13.5px}
  .nav a.hide-sm{display:none}
  .theme-toggle{width:34px;height:34px;margin-left:2px}
  .hero{padding-block:56px 36px}
  .hero p{font-size:17px}
  .section{padding-block:44px}
  .section-head h2{font-size:24px}
  .featured h3{font-size:30px}
  .synopsis{font-size:16.5px}
  .chapters li a{grid-template-columns:52px 1fr;gap:2px 10px;padding:16px 2px}
  .chapters li a:hover{padding-left:2px}
  .ch-num{font-size:15px}
  .featured .cover{max-width:190px}
  .section-head{flex-wrap:wrap}
  .eyebrow{letter-spacing:.1em}
  .ch-date{grid-column:2}
  .ch-title{font-size:17px}
  .post h2{font-size:27px}
  .post .body{font-size:17px}
  .reader{padding:48px 22px 32px}
  .prose{font-size:calc(18.5px * var(--fs,1))}
  .ch-nav{grid-template-columns:1fr;padding:0 22px 64px}
  .ch-nav .next{text-align:left}
  .font-btn.hide-sm{display:none}
}

/* ---------- ambient music button ---------- */
.music{position:fixed;right:22px;bottom:22px;z-index:50}
.music-btn{display:flex;align-items:center;gap:10px;height:46px;padding:0 16px 0 14px;border-radius:999px;border:1px solid var(--line);
  background:color-mix(in srgb,var(--surface) 90%,transparent);backdrop-filter:blur(10px);color:var(--ink);cursor:pointer;
  box-shadow:0 10px 30px -12px rgba(30,20,10,.35);font:500 13px var(--sans);transition:border-color .2s,transform .2s}
.music-btn:hover{border-color:var(--accent);transform:translateY(-1px)}
.music-btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.music-btn .ico{width:16px;height:16px;display:grid;place-items:center;color:var(--accent)}
.music-btn .ico svg{width:16px;height:16px}
.music-btn .pause{display:none}
.music.is-playing .play{display:none}.music.is-playing .pause{display:block}
.eq{display:flex;align-items:flex-end;gap:2px;height:14px}
.eq i{display:block;width:2.5px;height:4px;background:var(--muted);border-radius:2px;opacity:.6}
.music.is-playing .eq i{background:var(--accent);opacity:1;animation:eq 1.1s ease-in-out infinite}
.music.is-playing .eq i:nth-child(2){animation-delay:-.4s;animation-duration:.9s}
.music.is-playing .eq i:nth-child(3){animation-delay:-.7s;animation-duration:1.3s}
.music.is-playing .eq i:nth-child(4){animation-delay:-.2s;animation-duration:1s}
@keyframes eq{0%,100%{height:3px}50%{height:14px}}
@media (prefers-reduced-motion:reduce){.music.is-playing .eq i{animation:none;height:9px}}
.music-tip{position:absolute;right:0;bottom:56px;white-space:nowrap;background:var(--ink);color:var(--bg);font:500 12px var(--sans);
  padding:6px 10px;border-radius:8px;opacity:0;transform:translateY(4px);pointer-events:none;transition:opacity .18s,transform .18s}
.music:hover .music-tip,.music-btn:focus-visible + .music-tip,.music.show-tip .music-tip{opacity:1;transform:none}
.music .label{min-width:0}
@media (max-width:600px){.music{right:14px;bottom:14px}.music-btn{height:42px;padding:0 13px 0 12px}.music .label{display:none}}

/* ---------- write-to-us CTA ---------- */
.cta{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:26px 30px}
.cta h3{font-size:24px;margin-bottom:4px}
.cta p{margin:0;font-family:var(--serif);color:var(--muted);font-size:16px}
.side-box .btn{margin-top:14px;padding:10px 18px;font-size:14px}

/* ---------- letters ---------- */
.letters-layout{display:grid;grid-template-columns:1fr 340px;gap:56px;padding-block:56px 40px}
.letter-form{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:36px}
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:20px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field label{font-size:13.5px;font-weight:600}
.field .hint{font-weight:400;color:var(--muted);margin-left:6px}
.field input,.field select,.field textarea{font:16px var(--sans);color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:12px 14px;width:100%;transition:border-color .2s,box-shadow .2s}
.field textarea{font-family:var(--serif);font-size:17px;line-height:1.7;min-height:220px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.field select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none' stroke='%23a8472f' stroke-width='1.6'%3E%3Cpath d='M1 1l5 5 5-5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:38px}
.turnstile-slot{border:1px dashed var(--line);border-radius:10px;height:68px;display:flex;align-items:center;justify-content:center;gap:10px;color:var(--muted);font-size:13px;margin:4px 0 22px;background:var(--bg)}
.form-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.form-foot small{color:var(--muted);font-size:12.5px;max-width:320px}
.btn[disabled]{opacity:.6;cursor:default}
.success{display:none;text-align:center;padding:40px 10px}
.letter-form.sent form{display:none}.letter-form.sent .success{display:block}
.success .seal{width:64px;height:64px;border-radius:50%;margin:0 auto 18px;display:grid;place-items:center;background:var(--accent);color:#fff;font-family:var(--display);font-size:28px;font-style:italic}
.success h3{font-size:28px;margin-bottom:10px}
.success p{font-family:var(--serif);color:var(--muted);max-width:420px;margin:0 auto 22px}
.letters-aside{display:flex;flex-direction:column;gap:22px}
.replies{padding-block:24px 88px}
.thread{display:grid;gap:14px;margin-bottom:34px}
.letter,.reply{border:1px solid var(--line);border-radius:16px;padding:26px 28px;background:var(--surface)}
.letter{background:transparent;border-style:dashed}
.letter .from,.reply .from{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-bottom:10px}
.letter p,.reply p{font-family:var(--serif);font-size:17px;line-height:1.75;margin:0 0 .8em}
.letter p:last-child,.reply p:last-child{margin-bottom:0}
.reply{margin-left:56px;position:relative}
.reply::before{content:"";position:absolute;left:-30px;top:-15px;width:22px;height:46px;border-left:1.5px solid var(--line);border-bottom:1.5px solid var(--line);border-bottom-left-radius:12px}
.reply .author{margin-bottom:12px}
.review-note{font-size:13.5px;color:var(--muted);display:flex;gap:8px;align-items:center;margin:-12px 0 28px}
@media (max-width:900px){.letters-layout{grid-template-columns:1fr;gap:28px}}
@media (max-width:600px){.letter-form{padding:24px 20px}.field-row{grid-template-columns:1fr;gap:0}.reply{margin-left:22px}.reply::before{left:-16px;width:12px}.letter,.reply{padding:20px}.cta{padding:22px}}
.nav a{white-space:nowrap}
.review-note svg{flex:none}
@media (max-width:600px){.nav{gap:0}.nav a{padding:6px 6px;font-size:13px}.brand{font-size:21px}.nav a[aria-current]::after{margin-top:2px}}
@media (max-width:360px){.nav a{padding:6px 4px;font-size:12.5px}}
@media (max-width:600px){.site-footer{padding-bottom:84px}}

/* ---------- AI voice: Listen button ---------- */
.post-top{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.listen{position:relative;overflow:hidden;display:inline-flex;align-items:center;gap:9px;height:36px;padding:0 14px 0 6px;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;font:500 13px var(--sans);transition:border-color .2s,background .2s}
.listen:hover{border-color:var(--accent)}
.listen:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.listen .l-ico{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;background:var(--accent);color:#fff;flex:none}
.listen .l-ico svg{width:11px;height:11px}
.listen .pause{display:none}
.listen.is-playing .play{display:none}.listen.is-playing .pause{display:block}
.listen .l-who{color:var(--muted);font-weight:400}
.listen .l-time{color:var(--muted);font-variant-numeric:tabular-nums;padding-left:9px;border-left:1px solid var(--line)}
.listen .l-bar{position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent);transition:width .25s linear}
.listen.is-playing{border-color:var(--accent);background:var(--accent-soft)}
.listen.is-loading .l-ico{animation:pulse 1s ease-in-out infinite}
.listen.is-missing{opacity:.55;cursor:default}
@keyframes pulse{50%{opacity:.5}}
.reply .post-top{margin-bottom:12px}.reply .post-top .author{margin-bottom:0}
@media (max-width:600px){.listen .l-who{display:none}}
.music.is-ducked .eq i{animation-play-state:paused;opacity:.5}

/* ---------- transcript ---------- */
.transcript{margin:12px 0 0;font-size:14px}
.transcript summary{display:inline-flex;align-items:center;gap:6px;cursor:pointer;color:var(--muted);font-weight:500;list-style:none;padding:4px 0;user-select:none}
.transcript summary::-webkit-details-marker{display:none}
.transcript summary::before{content:"";width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(-45deg);transition:transform .2s;margin-right:2px}
.transcript[open] summary::before{transform:rotate(45deg)}
.transcript summary:hover{color:var(--accent)}
.transcript p{font-family:var(--serif);font-size:15.5px;line-height:1.7;color:var(--muted);margin:0 0 .7em}
.transcript[open]{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:6px 18px 10px}
.transcript[open] summary{margin-bottom:6px}
.reply .transcript{margin:0 0 14px}
.reply .transcript[open]{background:var(--bg)}

/* ---------- tag filter ---------- */
.tag-filter{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 36px}
.tf,.tag{font:500 13px var(--sans);color:var(--muted);background:transparent;border:1px solid var(--line);border-radius:999px;padding:5px 13px;cursor:pointer;transition:all .15s}
.tag{font-size:12px;padding:3px 10px}
.tf:hover,.tag:hover{border-color:var(--accent);color:var(--accent)}
.tf.is-active{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.post[hidden]{display:none}
.tf-empty{font-family:var(--serif);color:var(--muted)}

/* ---------- math ---------- */
.katex{font-size:1.06em}
.post .body .katex-display,.prose .katex-display{margin:1.1em 0;overflow-x:auto;overflow-y:hidden;padding:4px 0}
.transcript .katex-display{margin:.5em 0}

/* ---------- formula tree: links at the bottom of a post ---------- */
.side-link{display:inline-block;margin-top:4px;font-size:12.5px;color:var(--accent);text-decoration:none;font-weight:500}
.side-link:hover{text-decoration:underline}
.tree-links{margin-top:22px;border:1px solid var(--line);border-radius:14px;padding:16px 18px;background:var(--surface);display:flex;flex-direction:column;gap:12px}
.tree-links.only-more{border:0;background:none;padding:0}
.tl-row{display:flex;gap:14px;align-items:flex-start;flex-wrap:wrap}
.tl-label{font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:600;min-width:84px;padding-top:9px}
.tl-list{display:flex;flex-wrap:wrap;gap:8px;flex:1}
.tl{display:inline-flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:10px;padding:6px 12px;text-decoration:none;background:var(--bg);transition:border-color .2s}
.tl:hover{border-color:var(--accent)}
.tl-f{font-size:15px}
.tl-t{font-size:13px;color:var(--muted)}
.tl.is-muted{border-style:dashed;opacity:.7}
.tree-more{font-size:13.5px;font-weight:500;color:var(--accent);text-decoration:none;align-self:flex-start}
.tree-more:hover{text-decoration:underline}

/* ---------- formula tree page ---------- */
:root{--tree-line:color-mix(in srgb,var(--muted) 55%,transparent);--gap:30px}
.tree-legend{display:flex;flex-wrap:wrap;gap:8px 22px;align-items:center;font-size:13px;color:var(--muted);margin:30px 0 4px}
.tree-legend i{display:inline-block;width:28px;height:0;border-top:1.5px solid var(--tree-line);vertical-align:middle;margin-right:8px}
.tree-legend .lg-dash{border-top:1.5px dashed var(--accent)}
.tree-legend .lg-hint{margin-left:auto;font-style:italic}
.tree-stage{perspective:1600px;perspective-origin:50% 30%;padding:36px 0 56px;touch-action:pan-y;user-select:none}
.ftree{position:relative;transform-style:preserve-3d;transform:rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));transition:transform .5s cubic-bezier(.2,.7,.2,1);will-change:transform}
.ftree.is-live{transition:transform .12s ease-out}
.ftree ul,.ftree li{transform-style:preserve-3d}
.ftree ul{display:flex;justify-content:center;margin:0;padding:var(--gap) 0 0;position:relative}
.ftree>ul{padding-top:0}
.ftree li{list-style:none;position:relative;padding:var(--gap) 10px 0;display:flex;flex-direction:column;align-items:center}
.ftree li::before,.ftree li::after{content:"";position:absolute;top:0;right:50%;width:50%;height:var(--gap);border-top:1.5px solid var(--tree-line)}
.ftree li::after{right:auto;left:50%;border-left:1.5px solid var(--tree-line)}
.ftree li:first-child::before,.ftree li:last-child::after{border:0}
.ftree li:last-child::before{border-right:1.5px solid var(--tree-line);border-radius:0 10px 0 0}
.ftree li:first-child::after{border-radius:10px 0 0 0}
.ftree li:only-child::before,.ftree li:only-child::after{display:none}
.ftree li:only-child{padding-top:0}
.ftree ul ul::before{content:"";position:absolute;top:0;left:50%;width:0;height:var(--gap);border-left:1.5px solid var(--tree-line)}
.ftree>ul>li{padding-top:0}.ftree>ul>li::before,.ftree>ul>li::after{display:none}
.fnode{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;gap:4px;width:220px;padding:14px 16px 14px;border:1px solid var(--line);border-radius:16px;
  background:var(--surface);color:var(--ink);text-decoration:none;text-align:center;
  transform:translateZ(calc(var(--d,0) * 26px + 8px));box-shadow:0 14px 30px -18px rgba(30,20,10,.45);transition:border-color .2s,box-shadow .2s}
a.fnode:hover{border-color:var(--accent);box-shadow:0 18px 36px -16px rgba(168,71,47,.45)}
.fnode:target{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.fn-f{font-size:19px;min-height:52px;display:flex;align-items:center}
.fn-f .katex-display{margin:0}
.fn-t{font-family:var(--serif);font-size:14.5px;line-height:1.4}
.fn-also{font-size:11.5px;color:var(--accent)}
.fn-also a{color:inherit}
.fn-s{font-size:12px;font-weight:600;color:var(--accent);margin-top:4px}
.fnode.is-muted{border-style:dashed;background:color-mix(in srgb,var(--surface) 55%,transparent);box-shadow:none}
.fnode.is-muted .fn-f,.fnode.is-muted .fn-t{opacity:.62}
.fnode.is-muted .fn-s{color:var(--muted);font-weight:500}
.also-lines{position:absolute;left:0;top:0;width:100%;height:100%;overflow:visible;pointer-events:none;z-index:0}
.also-lines path{fill:none;stroke:var(--accent);stroke-width:1.6;stroke-dasharray:6 6;opacity:.8}
.tree-foot{margin:0 0 72px}
@media (max-width:760px){
  :root{--gap:14px}
  .tree-legend .lg-hint{margin-left:0;width:100%}
  .tree-stage{perspective:1000px;padding:20px 0 40px}
  .ftree ul{display:block;padding:0 0 0 26px}
  .ftree>ul{padding-left:0}
  .ftree li{display:block;padding:14px 0 0}
  .ftree li::before{display:block;content:"";position:absolute;left:-26px;right:auto;top:0;width:20px;height:44px;border:0;border-left:1.5px solid var(--tree-line);border-bottom:1.5px solid var(--tree-line);border-radius:0 0 0 10px}
  .ftree li:first-child::before,.ftree li:last-child::before{border:0;border-left:1.5px solid var(--tree-line);border-bottom:1.5px solid var(--tree-line);border-radius:0 0 0 10px}
  .ftree li::after{display:none}
  .ftree li:not(:last-child)::after{display:block;content:"";position:absolute;left:-26px;top:0;bottom:0;width:0;height:auto;border:0;border-left:1.5px solid var(--tree-line);border-radius:0}
  .ftree li:only-child{padding-top:14px}
  .ftree li:only-child::before{display:block}
  .ftree ul ul::before{display:none}
  .ftree>ul>li{padding-top:0}
  .fnode{width:100%;align-items:flex-start;text-align:left;padding:12px 14px;transform:translateZ(calc(var(--d,0) * 14px + 4px))}
  .fn-f{min-height:0}
}
@media (prefers-reduced-motion:reduce){
  .ftree{transform:none!important;transition:none}
  .fnode{transform:none}
}
@media (max-width:760px){.ftree>ul>li::before,.ftree>ul>li::after{display:none!important}}

/* ---------- hero motto ---------- */
.hero .hero-motto{display:flex;align-items:center;justify-content:center;gap:18px;max-width:none;margin:22px auto 0;
  font-family:var(--display);font-style:italic;font-weight:400;font-size:clamp(21px,2.4vw,28px);line-height:1.3;color:var(--accent);
  letter-spacing:-.005em;font-variation-settings:"SOFT" 60,"opsz" 72}
.hero-motto .rule{flex:none;width:44px;height:1px;background:currentColor;opacity:.45}
.hero .hero-lede{margin-top:18px}
@media (max-width:600px){.hero .hero-motto{gap:10px;font-size:19px;margin-top:16px}.hero-motto .rule{width:18px}}
.hero .hero-motto{text-wrap:balance}
@media (max-width:600px){.hero-motto .rule{display:none}.hero .hero-motto{font-size:20px;padding:0 6px}}
.post .body h2,.post .body h3{font-size:24px;margin:1.6em 0 .5em;line-height:1.25}
.post .body h3{font-size:20px}
@media (max-width:600px){.post .body h2{font-size:21px}}
/* hero visual: static image (helix unravelling into a small honeycomb) */
.hero-art{margin:30px auto 0;max-width:640px;padding:0}
.hero-art img{display:block;width:100%;height:auto;border-radius:18px;
  -webkit-mask-image:radial-gradient(ellipse 72% 70% at 50% 50%,#000 60%,transparent 100%);mask-image:radial-gradient(ellipse 72% 70% at 50% 50%,#000 60%,transparent 100%)}
[data-theme="dark"] .hero-art img{filter:brightness(.82) contrast(1.05);opacity:.92}
@media (max-width:600px){.hero-art{margin-top:20px;max-width:100%}}
/* birth date + day counter */
.hero .born-hero{font:500 13px/1.4 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--muted);opacity:.85;margin:14px auto 0}
.born-foot{opacity:.75;white-space:nowrap}
.born-foot::before{content:"· "}
.letter-form .cf-turnstile{margin:6px 0 4px;min-height:65px}
.form-error{color:#b3412e;font-size:14px;margin:6px 0 0}
[data-theme="dark"] .form-error{color:#f08a73}