:root {
  --bg: #f7f8fb;
  --card: #fff;
  --text: #1f2937;
  --muted: #4b5563;
  --line: #e5e7eb;
  --accent: #3730a3;
  --accent-soft: #e0e7ff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Yu Gothic", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.top {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 8%; background: rgba(255,255,255,.92); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; backdrop-filter: blur(8px); z-index: 5;
}
.logo { font-weight: 700; color: #111827; }
nav a { margin-left: 18px; color: var(--muted); font-size: 14px; font-weight: 500; }
main { max-width: 920px; margin: 0 auto; padding: 40px 8% 80px; }
.hero {
  background: linear-gradient(135deg, #eef2ff, #fff 60%);
  border: 1px solid var(--line); border-radius: 18px; padding: 36px 28px; margin-bottom: 36px;
}
.tag {
  display: inline-block; background: var(--accent-soft); color: var(--accent);
  padding: 6px 12px; border-radius: 999px; font-size: 13px; font-weight: 600;
}
h1 { font-size: 30px; line-height: 1.35; margin: 14px 0 10px; }
.lead { color: var(--muted); font-size: 16px; }
.links-inline { margin-top: 18px; font-size: 14px; }
section { margin: 40px 0; }
h2 { font-size: 22px; margin-bottom: 12px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; }
.grid article {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px;
}
.grid h3 { margin: 0 0 8px; font-size: 16px; }
footer {
  border-top: 1px solid var(--line); padding: 22px 8%; text-align: center; color: var(--muted); font-size: 13px;
}
.legal h1 { font-size: 26px; }
.legal h2 { margin-top: 28px; }
.legal p, .legal li { color: var(--muted); }
.note {
  background: #fff7ed; border: 1px solid #fed7aa; color: #9a3412;
  padding: 12px 14px; border-radius: 10px; font-size: 14px;
}
@media (max-width: 720px) {
  .top { flex-direction: column; align-items: flex-start; gap: 10px; }
  nav a { margin-left: 0; margin-right: 14px; }
  h1 { font-size: 24px; }
}