:root{
  --paper:#E3E6DB;
  --paper-dim:#CFD4C4;
  --panel:#DADFCF;
  --ink:#1B211F;
  --ink-soft:#4A544D;
  --seal:#A9312A;
  --seal-soft: rgba(169,49,42,.12);
  --bronze:#4C6350;
  --brass:#8C6C28;
  --border: rgba(27,33,31,.16);
  --font-display:'Literata','Iowan Old Style','Palatino Linotype',Palatino,'Noto Serif','PT Serif',Georgia,serif;
  --font-body:'Literata','New York','Iowan Old Style',Georgia,'Noto Serif','PT Serif',serif;
  --font-han:'Songti SC','STSong','SimSun','PMingLiU','Noto Serif CJK SC',serif;
  --font-mono:'SF Mono',Menlo,Consolas,'Liberation Mono',monospace;
}
@media (prefers-color-scheme: dark){
  :root{
    --paper:#14181A;
    --paper-dim:#202623;
    --panel:#1B211E;
    --ink:#E7E2CF;
    --ink-soft:#AEB6A7;
    --seal:#DD5F51;
    --seal-soft: rgba(221,95,81,.14);
    --bronze:#8FA890;
    --brass:#C9A15C;
    --border: rgba(231,226,207,.16);
  }
}
:root[data-theme="dark"]{
  --paper:#14181A;
  --paper-dim:#202623;
  --panel:#1B211E;
  --ink:#E7E2CF;
  --ink-soft:#AEB6A7;
  --seal:#DD5F51;
  --seal-soft: rgba(221,95,81,.14);
  --bronze:#8FA890;
  --brass:#C9A15C;
  --border: rgba(231,226,207,.16);
}
:root[data-theme="light"]{
  --paper:#E3E6DB;
  --paper-dim:#CFD4C4;
  --panel:#DADFCF;
  --ink:#1B211F;
  --ink-soft:#4A544D;
  --seal:#A9312A;
  --seal-soft: rgba(169,49,42,.12);
  --bronze:#4C6350;
  --brass:#8C6C28;
  --border: rgba(27,33,31,.16);
}

*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
}
a{color:var(--bronze);}
a:focus-visible, button:focus-visible{
  outline:2px solid var(--seal);
  outline-offset:3px;
}
::selection{ background:var(--seal-soft); }

.label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--ink-soft);
}

.topbar{
  display:flex;
  justify-content:space-between;
  align-items:center;
  max-width:760px;
  margin:0 auto;
  padding:20px 24px 0;
  gap:16px;
}
.topbar a{ color:var(--ink-soft); text-decoration:none; }
.topbar a:hover{ color:var(--seal); }

.page{
  max-width:760px;
  margin:0 auto;
  padding:0 24px 96px;
}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:64px 0 40px;
  overflow:hidden;
}
.hero-ghost{
  position:absolute;
  top:-40px;
  right:-30px;
  font-family:var(--font-han);
  font-size:280px;
  line-height:1;
  color:var(--ink);
  opacity:.05;
  pointer-events:none;
  user-select:none;
  z-index:0;
}
.hero-inner{ position:relative; z-index:1; }

.seal{
  display:inline-block;
  width:128px;
  height:128px;
  transform:rotate(-6deg);
  margin-bottom:22px;
  flex-shrink:0;
}
.seal img{ display:block; width:100%; height:100%; }

.hero-title-row{
  display:flex;
  align-items:baseline;
  gap:18px;
  flex-wrap:wrap;
}
h1{
  font-family:var(--font-display);
  font-weight:600;
  font-size:56px;
  letter-spacing:-.01em;
  margin:0;
  text-wrap:balance;
}
.hero-han{
  font-family:var(--font-han);
  font-size:30px;
  color:var(--ink-soft);
}
.hero-sub{
  font-size:19px;
  color:var(--ink-soft);
  max-width:34em;
  margin:18px 0 0;
  text-wrap:pretty;
}

/* ---------- download ---------- */
.download{
  margin:40px 0 64px;
}
.download .label{ margin-bottom:14px; }
.dl-grid{
  display:grid;
  grid-template-columns:repeat(4, minmax(0,1fr));
  gap:12px;
}
.dl-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  border:1px solid var(--border);
  padding:18px 16px;
  text-decoration:none;
  color:var(--ink);
  transition:background-color .15s ease, border-color .15s ease, color .15s ease;
}
.dl-card .plat{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--ink-soft);
}
.dl-card .name{
  font-family:var(--font-display);
  font-size:19px;
}
.dl-card .go{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--bronze);
  margin-top:auto;
}
.dl-card:hover{
  border-color:var(--seal);
}
.dl-card:hover .go{ color:var(--seal); }
.dl-card.primary{
  background:var(--seal);
  border-color:var(--seal);
  color:var(--paper);
}
.dl-card.primary .plat,
.dl-card.primary .go{ color:var(--paper); opacity:.85; }
.dl-card.primary:hover{ opacity:.92; }
.dl-card.soon{
  opacity:.5;
  border-style:dashed;
}
.dl-card.soon:hover{ border-color:var(--border); }
.dl-card.soon .go{ color:var(--ink-soft); }
.dl-card.soon.primary{
  background:transparent;
  color:var(--ink);
  opacity:.75;
  border-color:var(--seal);
}
.dl-card.soon.primary .plat{ color:var(--ink-soft); }
.dl-card.soon.primary .go{ color:var(--seal); }

/* ---------- sections ---------- */
section.block{
  padding:48px 0;
  border-top:1px solid var(--border);
}
section.block h2{
  font-family:var(--font-display);
  font-size:28px;
  font-weight:600;
  margin:6px 0 20px;
  text-wrap:balance;
}
section.block p{ font-size:17px; margin:0 0 16px; max-width:62ch; }
section.block p:last-child{ margin-bottom:0; }

/* ---------- how-it-works demo ---------- */
.steps{
  list-style:none;
  counter-reset:step;
  margin:0 0 28px;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.steps li{
  counter-increment:step;
  display:flex;
  gap:16px;
  align-items:baseline;
}
.steps li::before{
  content:counter(step);
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--seal);
  border:1px solid var(--seal);
  width:22px;
  height:22px;
  flex:none;
  display:flex;
  align-items:center;
  justify-content:center;
  transform:translateY(2px);
}
.steps li p{ margin:0; font-size:16px; }

.demo{
  font-family:var(--font-mono);
  font-size:14px;
  background:var(--panel);
  border:1px solid var(--border);
  padding:20px 22px;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.demo .row{ display:flex; gap:10px; align-items:center; flex-wrap:wrap; }
.demo .tag{ color:var(--ink-soft); }
.demo .keys{ letter-spacing:.03em; }
.demo .candidates{ display:flex; gap:8px; flex-wrap:wrap; }
.demo .cand{
  border:1px solid var(--border);
  padding:2px 8px;
  font-family:var(--font-han);
}
.demo .cand.picked{
  border-color:var(--seal);
  color:var(--seal);
  background:var(--seal-soft);
}
.demo .arrow{ color:var(--ink-soft); }

/* ---------- why grid ---------- */
.why-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  grid-template-columns:repeat(2, minmax(0,1fr));
  gap:18px 28px;
}
.why-list li{
  border-top:1px solid var(--border);
  padding-top:12px;
  font-size:15.5px;
  color:var(--ink-soft);
}
.why-list strong{ color:var(--ink); font-family:var(--font-body); display:block; margin-bottom:3px; }

/* ---------- contact ---------- */
.contact{
  border:1px solid var(--border);
  background:var(--panel);
  padding:24px 26px;
  margin-top:8px;
}
.contact .label{ color:var(--seal); margin-bottom:10px; }
.contact a{
  font-family:var(--font-mono);
  font-size:15px;
  text-decoration:none;
}
.contact a:hover{ text-decoration:underline; }

/* ---------- footer ---------- */
footer{
  border-top:1px solid var(--border);
  padding-top:32px;
  margin-top:16px;
  font-size:13.5px;
  color:var(--ink-soft);
}
footer p{ max-width:62ch; margin:0 0 12px; }

.font-note{
  padding-top:32px;
  padding-bottom:32px;
  margin-top:16px;
  border-top:1px solid var(--border);
  font-size:15.5px;
  color:var(--ink-soft);
}
.font-note p{ max-width:82ch; margin:0 0 8px; }
.font-note p:last-child{ margin-bottom:0; }

@media (prefers-reduced-motion: no-preference){
  .hero-inner{ animation: rise .7s ease-out both; }
  @keyframes rise{
    from{ opacity:0; transform:translateY(10px); }
    to{ opacity:1; transform:translateY(0); }
  }
}

@media (max-width:640px){
  h1{ font-size:40px; }
  .hero-ghost{ font-size:170px; }
  .why-list{ grid-template-columns:1fr; }
  .dl-grid{ grid-template-columns:repeat(2, minmax(0,1fr)); }
}