:root{
  --ink:#1f2a3c;
  --indigo:#2c4770;
  --indigo-deep:#1a2d4a;
  --paper:#f6f1e2;
  --paper-dark:#ece3cd;
  --card:#fffdf6;
  --stamp:#b23a2e;
  --gold:#b8933e;
  --line:#d9cfae;
  --muted:#6d6353;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:'Zen Kaku Gothic New', sans-serif;
  min-height:100vh;
  padding:32px 16px 120px;
}
.page{
  width:100%;
  max-width:760px;
  margin:0 auto;
}
.eyebrow{
  font-family:'JetBrains Mono', monospace;
  font-size:12px;
  letter-spacing:.18em;
  color:var(--indigo);
  text-transform:uppercase;
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px; height:1px;
  background:var(--stamp);
  display:inline-block;
}
.eyebrow a{color:var(--indigo); text-decoration:none;}
.eyebrow a:hover{text-decoration:underline;}
h1.title{
  font-family:'Shippori Mincho', serif;
  font-weight:700;
  font-size:clamp(28px,5.5vw,40px);
  line-height:1.3;
  margin:0 0 24px;
  letter-spacing:.02em;
}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:2px;
  padding:32px 30px;
  position:relative;
  box-shadow:0 1px 0 rgba(0,0,0,0.03), 0 12px 30px -18px rgba(31,42,60,0.25);
  margin-bottom:24px;
}
.card::before{
  content:"";
  position:absolute; inset:6px;
  border:1px solid rgba(44,71,112,0.12);
  pointer-events:none;
}
.card h2{
  font-family:'Shippori Mincho', serif;
  font-size:22px;
  color:var(--stamp);
  margin:0 0 14px;
}
.card h2:not(:first-child){margin-top:6px;}
.card p{
  font-size:14.5px;
  line-height:1.95;
  margin:0 0 16px;
  color:var(--ink);
}
.card p:last-child{margin-bottom:0;}
.card .sub{
  font-family:'JetBrains Mono', monospace;
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--gold);
  margin-bottom:6px;
  display:block;
}
.qa{margin-bottom:20px;}
.qa:last-child{margin-bottom:0;}
.qa .q{
  font-weight:700;
  font-size:15px;
  margin-bottom:6px;
  display:flex;
  gap:8px;
}
.qa .q::before{content:"Q."; color:var(--stamp);}
.qa .a{
  font-size:14.5px;
  line-height:1.9;
  color:var(--muted);
  padding-left:22px;
}
.nav-footer{
  max-width:760px;
  margin:0 auto;
  padding-top:8px;
  display:flex;
  flex-wrap:wrap;
  gap:16px;
  justify-content:center;
  font-size:12.5px;
}
.nav-footer a{
  color:var(--muted);
  text-decoration:underline;
}
.copyright{
  text-align:center;
  margin-top:20px;
  font-size:11.5px;
  color:var(--muted);
  opacity:.7;
}
.btn-back{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--indigo);
  text-decoration:none;
  margin-bottom:22px;
}
.btn-back:hover{text-decoration:underline;}

.ad-footer{
  position:fixed;
  left:0; right:0; bottom:0;
  background:var(--card);
  border-top:1px solid var(--line);
  padding:8px 12px;
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:66px;
  z-index:100;
}
.ad-slot{
  margin:28px 0;
  display:flex;
  justify-content:center;
}