*{box-sizing:border-box}
body{
  margin:0;
  background:#f4f1ea;
  color:#16171a;
  font:16px/1.7 "Inter",-apple-system,"PingFang SC","Helvetica Neue","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit}
.wrap{max-width:1160px;margin:0 auto;padding:0 40px}

nav{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:26px 0;
  font-size:14.5px;
}
nav b{font-size:16px;letter-spacing:-.2px}
nav .r{display:flex;gap:26px;color:#55565c}
nav a{text-decoration:none}
nav a:hover{color:#2f6fed}

.hero{
  display:grid;
  grid-template-columns:1.6fr 1fr;
  gap:48px;
  padding:72px 0 80px;
  border-bottom:1px solid #d9d4c8;
}
.hero h1{
  font-size:104px;
  line-height:.95;
  margin:0;
  letter-spacing:-3px;
  font-weight:800;
}
.hero h1 span{color:#2f6fed}
.hero .handle{font-size:16px;color:#6a6b70;margin:14px 0 26px}
.hero .intro{
  font-size:21px;
  line-height:1.6;
  max-width:600px;
  margin:0;
  color:#2a2b30;
}
.side{align-self:end;font-size:14px;color:#6a6b70}
.side h4{
  margin:0 0 10px;
  font-size:12px;
  letter-spacing:2px;
  color:#9a968c;
  font-weight:600;
}
.side ul{list-style:none;padding:0;margin:0 0 22px}
.side li{
  padding:8px 0;
  border-bottom:1px solid #e2ddd1;
  color:#16171a;
  font-size:15.5px;
}
.btn{
  display:inline-block;
  background:#16171a;
  color:#f4f1ea;
  text-decoration:none;
  padding:10px 20px;
  border-radius:999px;
  font-size:14px;
}
.btn:hover{background:#2f6fed}

.sec{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  padding:56px 0 10px;
}
.sec h2{
  font-size:13px;
  letter-spacing:3px;
  margin:0;
  color:#9a968c;
  font-weight:600;
}
.sec span{font-size:14px;color:#9a968c}

.case{
  display:grid;
  grid-template-columns:200px 1fr;
  gap:40px;
  padding:40px 0;
  border-top:1px solid #d9d4c8;
}
.idx{
  font-size:56px;
  font-weight:800;
  line-height:1;
  color:#c9c3b5;
  transition:color .2s;
}
.case:hover .idx{color:#2f6fed}
.tag{
  display:inline-block;
  margin-top:12px;
  font-size:12.5px;
  border:1px solid #cfc9bc;
  border-radius:999px;
  padding:2px 12px;
  color:#55565c;
}
.right h3{
  font-size:32px;
  margin:0 0 10px;
  letter-spacing:-.5px;
  font-weight:750;
}
.obs{color:#45464c;max-width:720px;margin:0 0 22px;font-size:16.5px}
.gq{
  margin:0 0 20px;
  padding:4px 0 4px 22px;
  border-left:3px solid #2f6fed;
  font-size:22px;
  line-height:1.55;
  font-weight:600;
  color:#16171a;
  max-width:760px;
}
.gq footer{
  font-size:13px;
  font-weight:400;
  color:#8a8b90;
  margin-top:8px;
}
.gq a{color:#2f6fed;text-decoration:none}
.gq a:hover{text-decoration:underline}

details summary{
  cursor:pointer;
  list-style:none;
  display:inline-block;
  font-size:14px;
  color:#2f6fed;
  border-bottom:1px solid #2f6fed;
  padding-bottom:1px;
}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"  ＋"}
details[open] summary::after{content:"  －"}

ol.evidence{
  margin:18px 0 12px;
  padding:0;
  list-style:none;
}
ol.evidence li{
  background:#fbfaf6;
  border:1px solid #e4dfd3;
  border-radius:12px;
  padding:14px 18px;
  margin-bottom:10px;
  font-size:15px;
}
ol.evidence .meta{
  display:flex;
  justify-content:space-between;
  gap:12px;
  font-size:12.5px;
  color:#8a8b90;
  margin-bottom:4px;
}
ol.evidence .meta a{color:#2f6fed;text-decoration:none}
ol.evidence p{margin:0;color:#2a2b30}

.guess{
  font-size:13.5px;
  color:#8a8b90;
  border:1px dashed #cfc9bc;
  border-radius:12px;
  padding:10px 16px;
}
.badge{
  font-size:11.5px;
  background:#e7e2d6;
  border-radius:6px;
  padding:1px 8px;
  margin-right:8px;
  color:#6a6b70;
}

.about{
  display:grid;
  grid-template-columns:200px 1fr;
  gap:40px;
  padding:48px 0;
  border-top:1px solid #d9d4c8;
  color:#55565c;
  font-size:15px;
}
.about h2{
  font-size:13px;
  letter-spacing:3px;
  color:#9a968c;
  margin:0;
  font-weight:600;
}

footer.pg{
  padding:30px 0 60px;
  border-top:1px solid #d9d4c8;
  display:flex;
  justify-content:space-between;
  font-size:14px;
  color:#8a8b90;
}
footer.pg a{text-decoration:none}
footer.pg a:hover{color:#2f6fed}

@media (max-width:820px){
  .wrap{padding:0 20px}
  nav .r{gap:14px;font-size:13px}
  .hero{grid-template-columns:1fr;padding:40px 0 48px;gap:28px}
  .hero h1{font-size:64px;letter-spacing:-2px}
  .hero .intro{font-size:18px}
  .case,.about{grid-template-columns:1fr;gap:12px}
  .idx{font-size:40px}
  .right h3{font-size:26px}
  .gq{font-size:19px}
  .sec{padding:40px 0 8px}
}