:root{
  --bg:#ffffff;
  --fg:#111827;
  --muted:#6b7280;
  --line:#e5e7eb;
  --card:#f9fafb;
  --max:860px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, Arial, "Noto Sans JP", sans-serif;
  color:var(--fg);
  background:var(--bg);
  line-height:1.75;
}

a{color:inherit}
a:hover{opacity:.8}

.wrap{
  max-width:var(--max);
  margin:0 auto;
  padding:32px 20px 60px;
}

.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-bottom:18px;
  border-bottom:1px solid var(--line);
}

.brand{
  display:flex;
  align-items:center;
  gap:12px;
  min-width:0;
}
.brand h1{
  font-size:26px;
  margin:0;
  font-weight:700;
  letter-spacing:.02em;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.brand .sub{
  display:block;
  font-size:12px;
  color:var(--muted);
  margin-top:2px;
}

.lang{
  display:flex;
  gap:8px;
  align-items:center;
  flex-wrap:wrap;
}
.lang button{
  appearance:none;
  border:1px solid var(--line);
  background:var(--bg);
  padding:6px 10px;
  border-radius:999px;
  font-size:12px;
  cursor:pointer;
}
.lang button[aria-pressed="true"]{
  background:var(--fg);
  color:var(--bg);
  border-color:var(--fg);
}

.hero{
  padding:34px 0 14px;
}
.hero h2{
  margin:0 0 10px;
  font-size:22px;
  line-height:1.25;
  letter-spacing:-.01em;
}
.hero p{
  margin:0;
  color:var(--muted);
  max-width:68ch;
}

.grid{
  margin-top:18px;
  display:grid;
  grid-template-columns: 1fr;
  gap:12px;
}
@media (min-width: 760px){
  .grid{grid-template-columns: 1fr 1fr;}
}

.card{
  border:1px solid var(--line);
  background:var(--card);
  border-radius:16px;
  padding:18px 18px 16px;
}
.card h3{
  margin:0 0 8px;
  font-size:14px;
  letter-spacing:.02em;
  text-transform:uppercase;
  color:var(--muted);
}
.card .body{
  margin:0;
  color:var(--fg);
  font-size:14px;
}
.sep{
  height:1px;
  background:var(--line);
  margin:14px 0;
}
.note{
  font-size:12px;
  color:var(--muted);
}

.footer{
  margin-top:34px;
  padding-top:14px;
  border-top:1px solid var(--line);
  color:var(--muted);
  font-size:12px;
}