/* =========================================================
   DoerHQ — brand site stylesheet
   Palette: Ink / Paper / Vermillion / Sage
   ========================================================= */

/* ---------- self-hosted fonts (latin subset) ----------
   Fetched with tools/fetch-fonts.py. Do not re-add the hosted
   Google Fonts <link>: it is a GDPR problem, it is unreachable
   from mainland China, and it blocks first paint.
   Inter ships as one variable file (300–700) = 47 KB, not five.
   Paths are relative to this stylesheet, not to the HTML.
------------------------------------------------------- */
@font-face{
  font-family:'Inter';
  font-style:normal;
  font-weight:300 700;
  font-display:swap;
  src:url('assets/fonts/inter-300-700.woff2') format('woff2');
}
@font-face{
  font-family:'Instrument Serif';
  font-style:normal;
  font-weight:400;
  font-display:swap;
  src:url('assets/fonts/instrument-serif-400.woff2') format('woff2');
}
@font-face{
  font-family:'Instrument Serif';
  font-style:italic;
  font-weight:400;
  font-display:swap;
  src:url('assets/fonts/instrument-serif-400-italic.woff2') format('woff2');
}

:root{
  --ink:#0E0E0C;
  --paper:#F7F4EE;
  --paper-2:#EFEAE1;
  --line:#D9D2C5;
  --line-strong:#B9B1A2;
  --muted:#6B6559;
  --accent:#FF4D19;
  --accent-ink:#C7350C;
  --sage:#2F4F43;
  --sage-soft:#E4EAE6;

  --serif:"Instrument Serif",Georgia,"Times New Roman",serif;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;

  --max:1180px;
  --pad:clamp(20px,4vw,48px);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}

html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.65;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}

::selection{background:var(--accent);color:#fff}

/* ---------- layout helpers ---------- */
.wrap{
  width:100%;
  max-width:var(--max);
  margin:0 auto;
  padding-left:var(--pad);
  padding-right:var(--pad);
}

.rule{border:0;border-top:1px solid var(--line);margin:0}

.eyebrow{
  font-size:11px;
  letter-spacing:.22em;
  text-transform:uppercase;
  font-weight:600;
  color:var(--accent-ink);
  margin:0 0 18px;
}
.eyebrow.muted{color:var(--muted)}

h1,h2,h3,h4{
  font-family:var(--serif);
  font-weight:400;
  letter-spacing:-.015em;
  line-height:1.02;
  margin:0;
}

h2{font-size:clamp(34px,5.2vw,64px)}
h3{font-size:clamp(22px,2.4vw,30px);line-height:1.15}

p{margin:0 0 1em}
.lede{
  font-size:clamp(17px,1.6vw,20px);
  line-height:1.6;
  color:#2A2620;
  font-weight:300;
  max-width:60ch;
}

.small{font-size:13px;color:var(--muted);line-height:1.5}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:.6em;
  border:1px solid var(--ink);
  background:var(--ink);
  color:var(--paper);
  padding:14px 24px;
  font-size:13px;
  font-weight:500;
  letter-spacing:.06em;
  text-transform:uppercase;
  border-radius:2px;
  cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.btn:hover{background:var(--accent);border-color:var(--accent);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}

.btn.ghost{
  background:transparent;
  color:var(--ink);
}
.btn.ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}

.btn.accent{
  background:var(--accent);
  border-color:var(--accent);
  color:var(--ink);
}
.btn.accent:hover{background:var(--ink);border-color:var(--ink);color:var(--paper)}

.link-arrow{
  font-size:13px;
  letter-spacing:.06em;
  text-transform:uppercase;
  font-weight:500;
  border-bottom:1px solid var(--line-strong);
  padding-bottom:2px;
  transition:border-color .2s,color .2s;
}
.link-arrow:hover{color:var(--accent-ink);border-color:var(--accent-ink)}
.link-arrow::after{content:" →"}

/* =========================================================
   HEADER
   ========================================================= */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(247,244,238,.88);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:68px;
}

.wordmark{
  font-family:var(--serif);
  font-size:24px;
  letter-spacing:-.01em;
  line-height:1;
  white-space:nowrap;
}
.wordmark .dot{color:var(--accent)}

.nav{
  display:flex;
  align-items:center;
  gap:30px;
  font-size:13px;
  letter-spacing:.04em;
}
.nav a{
  color:var(--muted);
  transition:color .2s;
  position:relative;
}
.nav a:hover{color:var(--ink)}
.nav a.nav-acquire{
  color:var(--accent-ink);
  border:1px solid rgba(199,53,12,.35);
  padding:7px 13px;
  border-radius:2px;
  font-weight:500;
}
.nav a.nav-acquire:hover{background:var(--accent);color:var(--ink);border-color:var(--accent)}

.menu-btn{
  display:none;
  background:none;
  border:0;
  padding:8px;
  cursor:pointer;
  color:var(--ink);
}
.menu-btn span{
  display:block;
  width:22px;
  height:1.5px;
  background:currentColor;
  margin:5px 0;
  transition:transform .25s var(--ease),opacity .2s;
}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* =========================================================
   HERO
   ========================================================= */
.hero{
  padding:clamp(56px,9vw,110px) 0 clamp(40px,6vw,72px);
  border-bottom:1px solid var(--line);
}
.hero-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:clamp(32px,6vw,80px);
  align-items:end;
}

.hero h1{
  font-size:clamp(46px,8.2vw,104px);
  line-height:.94;
  letter-spacing:-.025em;
  margin:0 0 28px;
}
.hero h1 em{
  font-style:italic;
  color:var(--accent);
}

.hero-sub{
  font-size:clamp(16px,1.5vw,19px);
  line-height:1.6;
  font-weight:300;
  color:#2A2620;
  max-width:34ch;
  margin:0 0 32px;
}
.hero-sub strong{font-weight:600}

/* subscribe form */
.subscribe{
  display:flex;
  gap:0;
  max-width:440px;
  border:1px solid var(--ink);
  border-radius:2px;
  overflow:hidden;
  background:#fff;
  transition:border-color .2s;
}
.subscribe:focus-within{border-color:var(--accent)}
.subscribe input{
  flex:1;
  min-width:0;
  border:0;
  background:transparent;
  padding:15px 16px;
  font-family:var(--sans);
  font-size:14px;
  color:var(--ink);
  outline:none;
}
.subscribe input::placeholder{color:#9A9384}
.subscribe button{
  border:0;
  background:var(--ink);
  color:var(--paper);
  padding:0 22px;
  font-family:var(--sans);
  font-size:12px;
  font-weight:600;
  letter-spacing:.1em;
  text-transform:uppercase;
  cursor:pointer;
  transition:background .2s;
  white-space:nowrap;
}
.subscribe button:hover{background:var(--accent)}

.form-note{
  font-size:12px;
  color:var(--muted);
  margin:10px 0 0;
  min-height:18px;
}
.form-note.ok{color:var(--sage)}
.form-note.err{color:var(--accent)}

/* letter card */
.letter-card{
  border:1px solid var(--ink);
  background:#FDFBF6;
  padding:26px 26px 22px;
  position:relative;
  box-shadow:8px 8px 0 var(--paper-2);
}
.letter-card .stamp{
  position:absolute;
  top:-11px;
  left:24px;
  background:var(--accent);
  color:var(--ink);
  font-size:10px;
  letter-spacing:.16em;
  text-transform:uppercase;
  font-weight:600;
  padding:3px 9px;
}
.letter-card .meta{
  display:flex;
  justify-content:space-between;
  font-size:11px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--muted);
  margin-bottom:18px;
}
.letter-card .letter-title{font-size:26px;line-height:1.12;margin-bottom:12px}
.letter-card .letter-title a:hover{color:var(--accent-ink)}
.letter-card p{font-size:14px;color:#3A352C;margin-bottom:16px}
.letter-card .by{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  color:var(--muted);
  border-top:1px solid var(--line);
  padding-top:14px;
}
.avatar{
  width:26px;height:26px;border-radius:50%;
  background:var(--sage);
  color:#fff;
  display:grid;place-items:center;
  font-size:11px;font-weight:600;letter-spacing:.02em;
  flex:0 0 auto;
}

/* =========================================================
   MARQUEE
   ========================================================= */
.marquee{
  border-bottom:1px solid var(--line);
  background:var(--ink);
  color:var(--paper);
  overflow:hidden;
  padding:13px 0;
  font-size:12px;
  letter-spacing:.08em;
  text-transform:uppercase;
}
.marquee-track{
  display:flex;
  width:max-content;
  animation:scroll 46s linear infinite;
}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-track span{
  padding:0 26px;
  white-space:nowrap;
  color:rgba(247,244,238,.78);
}
.marquee-track span b{color:var(--accent);font-weight:600}
.marquee-track span::after{content:"·";margin-left:52px;opacity:.4}

@keyframes scroll{
  from{transform:translateX(0)}
  to{transform:translateX(-50%)}
}

/* =========================================================
   SECTION SHELL
   ========================================================= */
.section{padding:clamp(64px,9vw,120px) 0;border-bottom:1px solid var(--line)}
.section.tight{padding:clamp(44px,6vw,76px) 0}

.section-head{
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  gap:32px;
  margin-bottom:clamp(36px,5vw,60px);
  flex-wrap:wrap;
}
.section-head .t{max-width:640px}

/* ---------- pillars ---------- */
.pillars{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  border-top:1px solid var(--ink);
}
.pillar{
  padding:34px 30px 34px 0;
  border-right:1px solid var(--line);
}
.pillar:last-child{border-right:0;padding-right:0}
.pillar:not(:first-child){padding-left:30px}
.pillar .num{
  font-family:var(--serif);
  font-size:13px;
  letter-spacing:.1em;
  color:var(--accent);
  display:block;
  margin-bottom:20px;
}
.pillar h3{margin-bottom:12px}
.pillar p{font-size:15px;line-height:1.6;color:#3A352C}
.pillar ul{
  list-style:none;
  padding:0;
  margin:18px 0 0;
  font-size:13px;
  color:var(--muted);
}
.pillar ul li{
  padding:7px 0;
  border-top:1px solid var(--line);
  display:flex;
  gap:8px;
}
.pillar ul li::before{content:"—";color:var(--line-strong)}

/* ---------- stats ---------- */
.stats{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.stat{
  padding:30px 0;
  border-right:1px solid var(--line);
  padding-left:0;
}
.stat:not(:first-child){padding-left:30px}
.stat:last-child{border-right:0}
.stat .v{
  font-family:var(--serif);
  font-size:clamp(34px,4.5vw,52px);
  line-height:1;
  letter-spacing:-.02em;
}
.stat .l{
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
  margin-top:10px;
}

/* ---------- two column feature ---------- */
.feature{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(32px,6vw,72px);
  align-items:start;
}
.feature .panel{
  background:#FDFBF6;
  border:1px solid var(--line);
  padding:28px;
}
.feature .panel h4,
.panel-h{
  font-family:var(--sans);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
  margin:0 0 16px;
  font-weight:600;
}

/* ---------- pricing ---------- */
.pricing{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:22px;
  margin-top:40px;
}
.price{
  border:1px solid var(--line);
  padding:32px;
  background:#FDFBF6;
  display:flex;
  flex-direction:column;
  transition:border-color .25s,transform .25s var(--ease);
}
.price:hover{border-color:var(--ink);transform:translateY(-3px)}
.price.featured{border-color:var(--ink);background:var(--ink);color:var(--paper)}
.price .tag{
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
  margin-bottom:20px;
}
.price.featured .tag{color:rgba(247,244,238,.6)}
.price .amount{
  font-family:var(--serif);
  font-size:56px;
  line-height:1;
  letter-spacing:-.02em;
}
.price .amount span{
  font-family:var(--sans);
  font-size:13px;
  letter-spacing:.04em;
  color:var(--muted);
  margin-left:6px;
}
.price.featured .amount span{color:rgba(247,244,238,.55)}
.price ul{
  list-style:none;
  padding:0;
  margin:26px 0 30px;
  font-size:14px;
  flex:1;
}
.price ul li{
  padding:9px 0;
  border-top:1px solid var(--line);
  display:flex;
  gap:10px;
}
.price ul li::before{content:"✓";color:var(--accent);font-weight:700}
.price.featured ul li{border-top-color:rgba(247,244,238,.15)}
.price .btn{width:100%;justify-content:center}
.price.featured .btn{background:var(--accent);border-color:var(--accent);color:var(--ink)}
.price.featured .btn:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}

/* ---------- sponsor strip ---------- */
.sponsor{
  border:1px solid var(--ink);
  padding:clamp(28px,4vw,44px);
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:32px;
  flex-wrap:wrap;
  background:
    repeating-linear-gradient(45deg,transparent,transparent 9px,rgba(14,14,12,.025) 9px,rgba(14,14,12,.025) 10px);
}
.sponsor h3{max-width:520px}
.sponsor p{font-size:14px;color:var(--muted);margin:8px 0 0}

/* ---------- footer ---------- */
.site-footer{
  padding:clamp(48px,7vw,84px) 0 40px;
  font-size:13px;
  color:var(--muted);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:36px;
  margin-bottom:52px;
}
.footer-grid h5,
.footer-grid .footer-h{
  font-family:var(--sans);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--ink);
  margin:0 0 16px;
  font-weight:600;
}
.footer-grid a{
  display:block;
  padding:5px 0;
  color:var(--muted);
  transition:color .2s;
}
.footer-grid a:hover{color:var(--accent)}
.footer-brand .wordmark{font-size:28px;margin-bottom:14px;display:block}
.footer-brand p{max-width:30ch;font-size:13px;line-height:1.6}
.footer-bottom{
  border-top:1px solid var(--line);
  padding-top:24px;
  display:flex;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  font-size:12px;
}

/* ---------- acquire banner (in footer of index) ---------- */
.acquire-band{
  background:var(--paper-2);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:clamp(40px,6vw,64px) 0;
}
.acquire-band .inner{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:30px;
  flex-wrap:wrap;
}
.acquire-band h3{max-width:560px;font-size:clamp(26px,3.4vw,40px)}
.acquire-band .price-tag{
  font-family:var(--serif);
  font-size:18px;
  color:#B8300A;
  display:block;
  margin-top:8px;
}

/* =========================================================
   GENERIC PAGE (acquire / about / etc.)
   ========================================================= */
.page-head{
  padding:clamp(56px,8vw,100px) 0 clamp(36px,5vw,60px);
  border-bottom:1px solid var(--line);
}
.page-head h1{
  font-size:clamp(42px,7vw,86px);
  line-height:.96;
  letter-spacing:-.025em;
  margin:0 0 24px;
  max-width:16ch;
}
.page-head h1 em{font-style:italic;color:var(--accent)}

.breadcrumb{
  font-size:12px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--muted);
  margin-bottom:26px;
}
.breadcrumb a:hover{color:var(--accent)}

/* offer card */
.offer{
  display:grid;
  grid-template-columns:1.2fr .8fr;
  gap:0;
  border:1px solid var(--ink);
  margin:clamp(36px,5vw,56px) 0;
}
.offer-main{padding:clamp(28px,4vw,48px)}
.offer-side{
  background:var(--ink);
  color:var(--paper);
  padding:clamp(28px,4vw,48px);
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.offer-side .lbl{
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:rgba(247,244,238,.55);
  margin-bottom:12px;
}
.offer-side .big{
  font-family:var(--serif);
  font-size:clamp(58px,8vw,86px);
  line-height:.9;
  letter-spacing:-.03em;
}
.offer-side .big sup{
  font-size:.34em;
  vertical-align:super;
  color:var(--accent);
  margin-right:2px;
}
.offer-side p{
  font-size:13px;
  color:rgba(247,244,238,.7);
  margin:18px 0 24px;
  line-height:1.55;
}
.offer-side .btn{
  background:var(--accent);
  border-color:var(--accent);
  color:var(--ink);
  width:100%;
  justify-content:center;
}
.offer-side .btn:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.offer-side .alt{
  display:block;
  text-align:center;
  font-size:12px;
  color:rgba(247,244,238,.6);
  margin-top:12px;
  border-bottom:1px solid rgba(247,244,238,.25);
  padding-bottom:2px;
}
.offer-side .alt:hover{color:#fff}

/* included list */
.included{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0 44px;
  margin:26px 0 0;
  list-style:none;
  padding:0;
}
.included li{
  padding:16px 0;
  border-top:1px solid var(--line);
  font-size:14px;
  display:flex;
  gap:12px;
  align-items:flex-start;
}
.included li b{display:block;font-weight:600;margin-bottom:2px}
.included li span.n{
  font-family:var(--serif);
  color:#B8300A;
  font-size:13px;
  flex:0 0 auto;
  width:22px;
}

/* process steps */
.steps{
  counter-reset:s;
  border-left:1px solid var(--line);
  margin:36px 0 0 4px;
  padding-left:30px;
}
.step{
  position:relative;
  padding-bottom:30px;
  counter-increment:s;
}
.step::before{
  content:counter(s,decimal-leading-zero);
  position:absolute;
  left:-46px;
  top:0;
  width:30px;
  height:30px;
  border-radius:50%;
  background:var(--paper);
  border:1px solid var(--ink);
  display:grid;
  place-items:center;
  font-size:10px;
  font-weight:600;
  letter-spacing:.02em;
}
.step h3{
  font-family:var(--sans);
  font-size:15px;
  font-weight:600;
  margin:0 0 6px;
}
.step p{font-size:14px;color:#3A352C;margin:0;max-width:62ch}

/* FAQ */
.faq{border-top:1px solid var(--line);margin-top:10px}
.faq details{
  border-bottom:1px solid var(--line);
  padding:20px 0;
}
.faq summary{
  cursor:pointer;
  font-size:16px;
  font-weight:500;
  list-style:none;
  display:flex;
  justify-content:space-between;
  gap:20px;
  align-items:center;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";
  font-family:var(--serif);
  font-size:24px;
  color:var(--accent);
  line-height:1;
  transition:transform .25s var(--ease);
  flex:0 0 auto;
}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{
  margin:14px 0 0;
  font-size:14px;
  color:#3A352C;
  max-width:70ch;
}

/* contact block */
.contact-box{
  border:1px solid var(--ink);
  padding:clamp(28px,4vw,44px);
  display:grid;
  grid-template-columns:1fr auto;
  gap:28px;
  align-items:center;
}
.contact-box h3{margin-bottom:8px}
.contact-box p{margin:0;font-size:14px;color:var(--muted)}

/* reveal — visible by default, hidden only when JS is available */
.reveal{
  opacity:1;
  transform:none;
}
.js .reveal{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .7s var(--ease),transform .7s var(--ease);
}
.js .reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
  .marquee-track{animation:none}
  .btn:hover,.price:hover{transform:none}
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-sub{max-width:52ch}
  .pillars{grid-template-columns:1fr;border-top:1px solid var(--ink)}
  .pillar{
    border-right:0;
    border-bottom:1px solid var(--line);
    padding:28px 0;
  }
  .pillar:not(:first-child){padding-left:0}
  .pillar:last-child{border-bottom:0}
  .feature{grid-template-columns:1fr}
  .pricing{grid-template-columns:1fr}
  .offer{grid-template-columns:1fr}
  .included{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .contact-box{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .stat{border-right:0;border-bottom:1px solid var(--line);padding:24px 0}
  .stat:not(:first-child){padding-left:0}
  .stat:last-child{border-bottom:0}
}

@media (max-width:760px){
  .nav{
    position:fixed;
    inset:68px 0 auto 0;
    background:var(--paper);
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:8px var(--pad) 24px;
    border-bottom:1px solid var(--line);
    transform:translateY(-12px);
    opacity:0;
    pointer-events:none;
    transition:opacity .25s var(--ease),transform .25s var(--ease);
  }
  .nav.open{opacity:1;transform:none;pointer-events:auto}
  .nav a{
    padding:14px 0;
    border-bottom:1px solid var(--line);
    font-size:15px;
    color:var(--ink);
  }
  .nav a.nav-acquire{
    border:0;
    border-bottom:1px solid var(--line);
    padding:14px 0;
    border-radius:0;
    margin-top:0;
    color:var(--accent);
  }
  .nav a.nav-acquire:hover{background:transparent;color:var(--accent)}
  .menu-btn{display:block}
  .subscribe{flex-direction:column;border:1px solid var(--ink)}
  .subscribe input{border-bottom:1px solid var(--line);padding:14px}
  .subscribe button{padding:14px}
  .footer-grid{grid-template-columns:1fr}
  .letter-card{box-shadow:4px 4px 0 var(--paper-2)}
  .sponsor{flex-direction:column;align-items:flex-start}
}

/* =========================================================
   I18N — language switch, CJK typography, internal build
   ========================================================= */
.lang-switch{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--muted);
  white-space:nowrap;
}
.lang-switch a{color:var(--muted)}
.lang-switch a:hover{color:var(--ink)}
.lang-switch [aria-current]{color:var(--ink);font-weight:600}

/* CJK: system fonts only — zero webfont payload.
   Instrument Serif has no CJK glyphs, so CJK gets its own stack.
   Gothic headlines read as a deliberate choice, not as a fallback. */
html[lang="ja"] body{font-family:"Yu Gothic","Hiragino Sans","Noto Sans JP",var(--sans)}
html[lang="ja"] h1,
html[lang="ja"] h2,
html[lang="ja"] h3,
html[lang="ja"] .letter-title{
  font-family:"Yu Gothic","Hiragino Kaku Gothic ProN","Noto Sans JP",var(--sans);
  font-weight:600;
  letter-spacing:0;
  line-height:1.3;
}

html[lang^="zh"] body{font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",var(--sans)}
html[lang^="zh"] h1,
html[lang^="zh"] h2,
html[lang^="zh"] h3,
html[lang^="zh"] .letter-title{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",var(--sans);
  font-weight:600;
  letter-spacing:0;
  line-height:1.32;
}

/* Latin headline sizes are tuned for a 1.02 ratio; CJK needs air */
html[lang="ja"] .hero h1,
html[lang^="zh"] .hero h1{
  font-size:clamp(30px,4.4vw,58px);
  line-height:1.3;
}
html[lang="ja"] h2,
html[lang^="zh"] h2{
  font-size:clamp(27px,3.9vw,48px);
  line-height:1.35;
}
html[lang="ja"] h3,
html[lang^="zh"] h3{
  font-size:clamp(20px,2.2vw,26px);
  line-height:1.45;
}
/* phrase-aware breaking (Chromium); ignored elsewhere, harmless */
html[lang="ja"] p,
html[lang="ja"] li,
html[lang="ja"] h1,
html[lang="ja"] h2,
html[lang="ja"] h3{word-break:auto-phrase}
/* italic on CJK is a synthetic skew — never do it */
html[lang="ja"] .hero h1 em,
html[lang^="zh"] .hero h1 em{font-style:normal}

html[lang="ja"] .letter-title,
html[lang^="zh"] .letter-title{font-size:23px;line-height:1.45}

html[lang="ja"] .eyebrow,
html[lang^="zh"] .eyebrow{letter-spacing:.06em}

/* the honest disclosure under the form */
.lang-note{
  font-size:12px;
  line-height:1.65;
  color:var(--muted);
  margin-top:14px;
  max-width:46ch;
}
.lang-note b{color:var(--ink);font-weight:600}

/* internal-only build marker */
.draft-bar{
  background:var(--ink);
  color:var(--paper);
  font-size:12px;
  letter-spacing:.06em;
  padding:9px var(--pad);
  text-align:center;
}
.draft-bar a{
  color:var(--accent);
  border-bottom:1px solid rgba(255,77,25,.45);
  padding-bottom:1px;
}

@media (max-width:760px){
  .lang-switch{
    padding:14px 0;
    border-bottom:1px solid var(--line);
    width:100%;
  }
  .lang-note{max-width:none}
}

/* ---------- pillar outbound link (added 2026-11-04) ----------
   The homepage pillars are summaries; the full pages live at
   /stack/ and /club/. This is the only path from summary to detail.
------------------------------------------------------------- */
.pillar-link{
  display:inline-block;
  margin-top:16px;
  font-size:14px;
  font-weight:500;
  color:var(--accent-ink);
  border-bottom:1px solid var(--accent);
  padding-bottom:1px;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.pillar-link:hover,
.pillar-link:focus-visible{
  color:var(--accent);
  border-bottom-color:transparent;
}

/* ---------- table scroll guard (added 2026-11-04) ----------
   Wide tables must never widen the page on small screens.
------------------------------------------------------------- */
.table-scroll{
  overflow-x:auto;
  max-width:100%;
  -webkit-overflow-scrolling:touch;
}

/* ---------- subscribe CTA (2026-11-05) ----------
   Buttondown rejects programmatic submits from third-party origins
   (fetch: 400/403, native form: 403). Only a real visit to their page
   works, so the inline form became a link. Do not turn this back into
   a fetch() call without re-testing — see docs/esp-integration.md.
------------------------------------------------- */
.subscribe-cta{
  display:inline-flex;
  align-items:center;
  gap:14px;
  padding:16px 22px;
  background:var(--ink);
  color:var(--paper);
  border:1px solid var(--ink);
  border-radius:2px;
  font-family:var(--sans);
  font-size:12px;
  font-weight:600;
  letter-spacing:.1em;
  text-transform:uppercase;
  text-decoration:none;
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.subscribe-cta:hover,
.subscribe-cta:focus-visible{
  background:var(--accent);
  border-color:var(--accent);
  transform:translateY(-1px);
}
.subscribe-cta .arr{font-size:13px;letter-spacing:0;opacity:.85}

/* ---------- language hint (2026-11-05) ----------
   Slim bar at the very top, shown only when the browser language
   differs from the page. No redirect, dismissible, remembered.
   See site/lang-hint.js for the logic and the reasoning.
------------------------------------------------- */
.lang-hint{
  background:var(--paper-2);
  border-bottom:1px solid var(--line);
  font-family:var(--sans);
  font-size:13px;
  line-height:1.5;
  color:var(--ink);
}
.lang-hint-in{
  width:100%;
  max-width:var(--max);
  margin:0 auto;
  padding:10px var(--pad);
  display:flex;
  align-items:center;
  gap:14px;
  flex-wrap:wrap;
}
.lang-hint-cta{
  margin-left:auto;
  color:var(--accent-ink);
  font-weight:500;
  text-decoration:none;
  border-bottom:1px solid currentColor;
  padding-bottom:1px;
  transition:color .2s var(--ease);
}
.lang-hint-cta:hover,
.lang-hint-cta:focus-visible{color:var(--ink)}
.lang-hint-x{
  background:none;
  border:0;
  padding:0 2px;
  font-family:var(--sans);
  font-size:18px;
  line-height:1;
  color:var(--muted);
  cursor:pointer;
}
.lang-hint-x:hover{color:var(--ink)}
@media (max-width:560px){
  .lang-hint-in{padding:9px 16px;font-size:12.5px;gap:10px}
  .lang-hint-cta{margin-left:0}
}

/* ---------- disabled pricing buttons (2026-11-05) ----------
   The Club has no payment path yet (Stripe is not available from
   mainland China). A button that looks live but does nothing is worse
   than a button that says it is not ready. See docs/esp-integration.md.
-------------------------------------------------------------- */
.btn.is-disabled{
  opacity:.45;
  cursor:not-allowed;
  pointer-events:none;
  filter:grayscale(.35);
}
.club-status{
  margin:8px 0 0;
  padding:14px 16px;
  border-left:3px solid var(--accent);
  background:var(--paper-2);
  font-family:var(--sans);
  font-size:13.5px;
  line-height:1.65;
  color:var(--ink);
}
.club-status a{
  color:var(--accent-ink);
  border-bottom:1px solid currentColor;
}