/* ================================================
   web/article_layout.css
   記事ページ共通レイアウト
   brand_facts / paid_plan など全記事ページで使用
   ================================================ */

.article-page {
  min-height: 100vh;
  background-color: #f0f5ff;
  font-family:
    "Zen Kaku Gothic New", "Hiragino Maru Gothic Pro", "Yu Gothic", "Meiryo",
    sans-serif;
  color: #1e293b;
}

/* Header */
.article-header {
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 60%, #3b82f6 100%);
  padding: 56px 24px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.article-header::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 280px;
  height: 280px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 50%;
}

.article-header::after {
  content: "";
  position: absolute;
  bottom: -80px;
  left: -40px;
  width: 220px;
  height: 220px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 50%;
}

.article-header-label {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  color: #bfdbfe;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.article-header-title {
  color: #ffffff;
  font-size: 28px;
  font-weight: 700;
  line-height: 1.4;
  margin: 0 0 12px;
  position: relative;
  z-index: 1;
}

.article-header-subtitle {
  color: #bfdbfe;
  font-size: 14px;
  line-height: 1.6;
  margin: 0;
  position: relative;
  z-index: 1;
}

/* Main content */
.article-main {
  max-width: 780px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

/* Article card */
.article-body {
  background: #ffffff;
  border-radius: 16px;
  border-left: 4px solid #3b82f6;
  box-shadow: 0 2px 16px rgba(37, 99, 235, 0.08);
  padding: 40px 44px;
  margin-bottom: 32px;
  transition: box-shadow 0.2s ease;
}

.article-body:hover {
  box-shadow: 0 4px 24px rgba(37, 99, 235, 0.14);
}

/* Footer */
.article-footer {
  text-align: center;
  padding: 24px;
  color: #94a3b8;
  font-size: 13px;
  border-top: 1px solid #e2e8f0;
}

/* Responsive */
@media (max-width: 640px) {
  .article-header {
    padding: 40px 20px 36px;
  }

  .article-header-title {
    font-size: 22px;
  }

  .article-main {
    padding: 32px 16px 60px;
  }

  .article-body {
    padding: 28px 20px;
  }
}