/* 紹介ページ専用。色・文字・図版の基本は style.css（ガイドと共通）を使う。 */

.topbar {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.topbar .wrap {
  display: flex;
  align-items: center;
  gap: 18px;
  padding-top: 12px;
  padding-bottom: 12px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  color: var(--text);
  margin-right: auto;
}

.brand:hover { text-decoration: none; }
.brand img { width: 28px; height: 28px; }

.topbar nav { display: flex; gap: 16px; font-size: 14px; flex-wrap: wrap; }
.topbar .langbar { margin: 0; }

/* ---- hero ---- */

.intro-hero { padding: 56px 0 8px; text-align: center; }

.intro-hero h1 { font-size: 44px; margin-bottom: 14px; }

.intro-hero .lead {
  font-size: 19px;
  color: var(--text-dim);
  max-width: 680px;
  margin: 0 auto;
}

.cta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 12px;
}

.cta-note { font-size: 14px; color: var(--text-dim); margin: 0 0 36px; }

.intro-hero figure { margin: 0; }

@media (max-width: 560px) {
  .intro-hero h1 { font-size: 32px; }
  .intro-hero .lead { font-size: 17px; }
}

/* ---- highlights ---- */

.highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 48px 0 64px;
}

@media (max-width: 760px) { .highlights { grid-template-columns: 1fr; } }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.card h3 { margin: 0 0 4px; font-size: 17px; }
.card p { margin: 0; color: var(--text-dim); font-size: 15px; }

/* ---- feature rows ---- */

.feature {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 64px;
}

.feature.reverse { grid-template-columns: 7fr 5fr; }
.feature.reverse .feature-text { order: 2; }

@media (max-width: 760px) {
  .feature, .feature.reverse { grid-template-columns: 1fr; gap: 8px; }
  .feature.reverse .feature-text { order: 0; }
}

.feature h2 { border-bottom: 0; padding-bottom: 0; }
.feature figure { margin: 0; }

.plus-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  vertical-align: middle;
  margin-left: 6px;
}

/* ---- free / plus ---- */

.plans {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 20px;
}

@media (max-width: 700px) { .plans { grid-template-columns: 1fr; } }

.plans .card ul { margin: 8px 0 0; color: var(--text); font-size: 15px; }
.plans .card.plus { border-color: var(--accent); }

.prices {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 16px;
  margin: 10px 0 4px;
  font-size: 15px;
}

.prices dt { color: var(--text-dim); }
.prices dd { margin: 0; }
.prices strong { font-size: 18px; }
.price-note { display: block; font-size: 13px; color: var(--text-dim); }
.plans .card .price-footnote { font-size: 13px; color: var(--text-dim); margin: 6px 0 0; }

@media (max-width: 420px) {
  .prices { grid-template-columns: 1fr; gap: 0; }
  .prices dd { margin-bottom: 8px; }
}