:root{
  --bg:#ffffff;
  --text:#111827;
  --muted:#6b7280;
  --line:#e5e7eb;
  --card:#ffffff;
  --soft:#f8fafc;
  --accent:#2563eb;
  --accent2:#0ea5e9;
  --shadow: 0 10px 28px rgba(17,24,39,.08);
  --radius: 16px;
  --max: 920px;
}

*{ box-sizing:border-box; }

html,body{ height:100%; }

body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI",
    "Hiragino Kaku Gothic ProN","Hiragino Sans","Noto Sans JP",Meiryo,sans-serif;
  color:var(--text);
  background: var(--bg);
  line-height: 1.9;
  letter-spacing: .02em;
}

a{ color: var(--accent); }

.wrap{
  max-width: var(--max);
  margin: 0 auto;
  padding: 28px 18px;
}

.site-header{
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(37,99,235,.08), rgba(37,99,235,0));
}

.kicker{
  margin: 0;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: .14em;
  text-transform: uppercase;
}

h1{
  margin: 10px 0 8px;
  font-size: clamp(26px, 3.2vw, 40px);
  line-height: 1.22;
  letter-spacing: .01em;
}

.lead{
  margin: 0;
  color: var(--muted);
  max-width: 72ch;
}

.article{
  display: grid;
  gap: 18px;
}

.card{
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 18px;
  box-shadow: 0 1px 0 rgba(17,24,39,.03);
}

.card h2{
  margin: 0 0 10px;
  font-size: 18px;
  letter-spacing: .01em;
  display: flex;
  align-items: center;
  gap: 10px;
}

.card h2::before{
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: inline-block;
  flex: 0 0 10px;
}

p{
  margin: 10px 0;
}

ul{
  margin: 10px 0 10px 20px;
  padding: 0;
}

li{
  margin: 6px 0;
}

strong{
  font-weight: 800;
}

.quote{
  margin: 14px 0 0;
  padding: 14px 14px;
  border-left: 4px solid rgba(37,99,235,.45);
  background: linear-gradient(180deg, rgba(37,99,235,.06), rgba(37,99,235,0));
  border-radius: 12px;
}

.quote p{
  margin: 8px 0;
  color: #0f172a;
}

.pill{
  display: inline-block;
  margin: 0 6px 0 0;
  padding: 2px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--soft);
  color: #0f172a;
  font-size: 13px;
}

.closing{
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
}

.site-footer{
  margin-top: 22px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}