* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans",
    "Hiragino Kaku Gothic ProN", "Noto Sans JP", Roboto, sans-serif;
  line-height: 1.8;
  color: #111827;
  background-color: #fff;
  -webkit-font-smoothing: antialiased;
}

/* ── Shared Header ── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  padding: 0 48px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header-logo {
  font-size: 18px;
  font-weight: 700;
  color: #09233e;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.site-header-logo:hover {
  text-decoration: none;
}

.site-header-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-header-nav a {
  font-size: 13px;
  font-weight: 500;
  color: #6b7280;
  text-decoration: none;
  transition: color 0.15s;
}

.site-header-nav a:hover {
  color: #09233e;
  text-decoration: none;
}

/* ── Main Container ── */
.container {
  padding: 100px 48px 60px;
  min-height: 100vh;
}

/* ── Page Header ── */
.page-header {
  margin-bottom: 40px;
  padding-bottom: 20px;
  border-bottom: 1px solid #f3f4f6;
}

.page-header h1 {
  font-size: 28px;
  font-weight: 800;
  color: #09233e;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.last-updated {
  font-size: 13px;
  color: #9ca3af;
}

/* ── Typography ── */
h2 {
  font-size: 18px;
  font-weight: 700;
  color: #09233e;
  margin-top: 40px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid #bfdbfe;
}

h3 {
  font-size: 16px;
  font-weight: 700;
  color: #09233e;
  margin-top: 24px;
  margin-bottom: 12px;
}

p {
  margin-bottom: 16px;
  color: #374151;
  text-align: justify;
}

ul,
ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

li {
  margin-bottom: 8px;
  color: #374151;
}

a {
  color: #2563eb;
  text-decoration: none;
  transition: color 0.15s;
}

a:hover {
  color: #1d4ed8;
  text-decoration: underline;
}

/* ── Shared Footer ── */
.site-footer {
  padding: 40px 24px;
  border-top: 1px solid #f3f4f6;
  background: #fafafa;
}

.site-footer-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.site-footer-links a {
  font-size: 13px;
  color: #6b7280;
  text-decoration: none;
  transition: color 0.15s;
}

.site-footer-links a:hover {
  color: #111827;
  text-decoration: none;
}

.site-footer-copy {
  font-size: 12px;
  color: #9ca3af;
}

/* ── Contact Info ── */
.contact-info {
  background-color: #f3f4f6;
  padding: 20px;
  border-radius: 12px;
  margin-top: 20px;
}

.contact-info p {
  margin-bottom: 8px;
  color: #374151;
}

.contact-info p:last-child {
  margin-bottom: 0;
}

/* ── FAQ styles ── */
.faq-item {
  background-color: #f9fafb;
  border: 1px solid #f3f4f6;
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 16px;
  transition: box-shadow 0.2s;
}

.faq-item:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.faq-question {
  font-weight: 700;
  color: #2563eb;
  margin-bottom: 12px;
  font-size: 15px;
}

.faq-answer {
  color: #4b5563;
  margin-bottom: 0;
  padding-left: 12px;
  border-left: 3px solid #2563eb;
}

.faq-item ul {
  margin-top: 12px;
  margin-bottom: 0;
  padding-left: 28px;
}

.faq-item li {
  margin-bottom: 6px;
  color: #4b5563;
}

.faq-item li:last-child {
  margin-bottom: 0;
}

/* Section headers for support page */
main > h3 {
  margin-top: 32px;
  margin-bottom: 20px;
}

/* ── News styles ── */
.news-list {
  list-style: none;
  padding: 0;
}

.news-item {
  border-bottom: 1px solid #f3f4f6;
  padding: 20px 0;
}

.news-item:last-child {
  border-bottom: none;
}

.news-item a {
  display: block;
  text-decoration: none;
  color: inherit;
}

.news-item a:hover {
  text-decoration: none;
}

.news-item a:hover .news-title {
  color: #2563eb;
}

.news-date {
  font-size: 13px;
  color: #9ca3af;
  margin-bottom: 6px;
}

.news-title {
  font-size: 16px;
  font-weight: 600;
  color: #09233e;
  line-height: 1.5;
  transition: color 0.15s;
}

/* ── Back link ── */
.back-link {
  display: inline-flex;
  align-items: center;
  font-size: 13px;
  color: #6b7280;
  text-decoration: none;
  margin-bottom: 16px;
  transition: color 0.15s;
}

.back-link:hover {
  color: #2563eb;
  text-decoration: none;
}

.news-meta {
  margin-top: 8px;
}

.news-meta .date {
  font-size: 13px;
  color: #9ca3af;
}

/* ── Responsive ── */
@media (max-width: 600px) {
  .container {
    padding: 88px 20px 40px;
  }

  .site-header {
    padding: 0 16px;
  }

  .page-header h1 {
    font-size: 24px;
  }

  h2 {
    font-size: 16px;
  }

  .site-header-nav {
    gap: 12px;
  }

  .site-footer-inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}