:root {
  --green: #32c98d;
  --green-dark: #138d69;
  --black: #1b222b;
  --muted: #71808e;
  --line: #e8edef;
  --line-strong: #dce7e7;
  --font: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Hiragino Kaku Gothic ProN', sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: #fff;
  color: var(--black);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}
a { color: #176b52; }
a:focus-visible { outline: 3px solid #9ae5cb; outline-offset: 3px; }
.platform-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  width: 100%;
}
.platform-page > .site-footer {
  flex: 0 0 auto;
  width: 100%;
  margin-top: 48px;
}
.topbar {
  width: min(1140px, calc(100% - 40px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  height: 82px;
}
.brand-title { display: flex; flex-direction: column; gap: 2px; text-decoration: none; color: inherit; }
.brand-title strong { font-size: 13px; letter-spacing: .055em; }
.brand-title span { font-size: 10px; color: var(--muted); letter-spacing: .12em; }
.main-content {
  width: min(900px, calc(100% - 40px));
  margin: 0 auto 48px;
  padding-bottom: 24px;
  flex: 1 0 auto;
}
.main-content--news-list {
  width: min(1140px, calc(100% - 40px));
}
.page-hero { margin: 8px 0 28px; }
.page-hero h1 { margin: 0 0 8px; font-size: 28px; letter-spacing: .02em; }
.page-hero p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.7; }
.breadcrumb { font-size: 12px; color: var(--muted); margin: 0 0 20px; }
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { color: #176b52; text-decoration: underline; }
.news-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.news-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  transition: border-color .16s ease, box-shadow .16s ease;
}
.news-card:hover, .news-card:focus-visible {
  border-color: #cce9dd;
  box-shadow: 0 8px 24px rgba(25, 58, 49, .06);
}
.news-card-media {
  aspect-ratio: 600 / 400;
  background: #f4f7f6;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex: 0 0 auto;
}
.news-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}
.news-card-media--empty { background: linear-gradient(135deg, #edf8f1, #f4f7f6); }
.news-card-body { padding: 14px 16px 18px; display: flex; flex-direction: column; gap: 10px; flex: 1 1 auto; }
.news-card-date { font-size: 12px; color: var(--muted); }
.news-card-title { font-size: 14px; line-height: 1.65; font-weight: 650; }
.news-pagination {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px 16px;
}
.news-pagination__pages {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.news-pagination__pages li { margin: 0; }
.news-pagination__link,
.news-pagination__nav {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  min-height: 36px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--black);
  text-decoration: none;
  font-size: 13px;
}
.news-pagination__link:hover,
.news-pagination__nav:hover {
  border-color: #cce9dd;
  color: #176b52;
}
.news-pagination__current {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  min-height: 36px;
  padding: 0 12px;
  border-radius: 999px;
  background: #176b52;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
}
.article-layout { display: grid; grid-template-columns: 1fr; gap: 20px; }
.article-head { border: 1px solid var(--line); border-radius: 16px; padding: 22px; background: #f7faf9; }
.article-label { margin: 0 0 10px; font-size: 12px; color: #176b52; font-weight: 700; }
.article-title { margin: 0 0 12px; font-size: 22px; line-height: 1.55; }
.article-date { font-size: 13px; color: var(--muted); }
.article-thumb { margin-top: 18px; border-radius: 12px; overflow: hidden; border: 1px solid var(--line); }
.article-thumb img { width: 100%; height: auto; display: block; object-fit: contain; }
.article-body {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px;
  font-size: 15px;
  line-height: 1.85;
  display: flow-root;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
}
.article-body-inner { max-width: 100%; }
.article-body img { max-width: 100%; height: auto; border-radius: 8px; }
.breadcrumb { overflow-wrap: anywhere; word-break: break-word; }
.contact-panel {
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  padding: 22px;
  background: #fff;
  box-shadow: 0 7px 28px rgba(25, 58, 49, .06);
}
.contact-panel p.lead { margin: 0 0 18px; color: var(--muted); font-size: 14px; line-height: 1.75; }
.form-grid { display: grid; gap: 14px; }
.form-field label { display: block; font-size: 12px; font-weight: 700; margin-bottom: 6px; }
.form-field .req { color: #c2410c; font-size: 11px; margin-left: 6px; }
.form-field input, .form-field textarea {
  width: 100%;
  border: 1px solid #d5e0dc;
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  font-size: 14px;
}
.form-field textarea { min-height: 140px; resize: vertical; }
.checkbox-group { display: grid; gap: 8px; }
.checkbox-group label { font-weight: 500; font-size: 13px; display: flex; gap: 8px; align-items: flex-start; }
.checkbox-group input { width: auto; margin-top: 3px; }
.privacy-note { font-size: 12px; color: var(--muted); line-height: 1.7; margin: 4px 0 0; }
.submit-row { margin-top: 8px; }
.submit-btn {
  background: #176b52;
  color: #fff;
  border: 0;
  border-radius: 999px;
  padding: 12px 22px;
  font: inherit;
  font-size: 14px;
  cursor: pointer;
}
.form-message { margin: 0 0 14px; font-size: 14px; line-height: 1.7; }
.form-message.error { color: #9a3412; }
.form-message.success { color: #176b52; }
.site-footer {
  padding: 28px max(20px, calc((100% - min(1140px, calc(100% - 40px))) / 2)) 40px;
  border-top: 1px solid var(--line);
  box-sizing: border-box;
}
.site-footer .footer-columns {
  width: min(1140px, calc(100% - 40px));
  margin: 0 auto;
}
.footer-columns { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 28px 32px; }
.footer-columns h2 { margin: 0 0 14px; font-size: 13px; font-weight: 650; color: #243036; }
.footer-columns h2 a { font-size: 13px; font-weight: 650; color: #243036; text-decoration: none; }
.footer-columns ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-columns a, .footer-columns span { font-size: 12px; line-height: 1.5; color: #6d7b82; text-decoration: none; }
.footer-columns a:hover { color: #176b52; text-decoration: underline; }
.empty-note { border: 1px dashed var(--line-strong); border-radius: 12px; padding: 24px; color: var(--muted); font-size: 14px; }
.whitepaper-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.whitepaper-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}
.whitepaper-card-media {
  aspect-ratio: 600 / 400;
  background: #f4f7f6;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex: 0 0 auto;
  padding: 10px;
  box-sizing: border-box;
}
.whitepaper-card-media img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
}
.whitepaper-card-media--empty { background: linear-gradient(135deg, #edf8f1, #f4f7f6); }
.whitepaper-card-body { padding: 14px 16px 18px; display: flex; flex-direction: column; gap: 10px; flex: 1 1 auto; }
.whitepaper-card-label { margin: 0; font-size: 11px; font-weight: 700; letter-spacing: .06em; color: #176b52; }
.whitepaper-card-title { margin: 0; font-size: 15px; line-height: 1.55; font-weight: 650; }
.whitepaper-card-summary { margin: 0; font-size: 13px; line-height: 1.7; color: var(--muted); flex: 1 1 auto; }
.whitepaper-card-actions { margin-top: 4px; }
.whitepaper-card-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 18px;
  border-radius: 999px;
  background: #176b52;
  color: #fff;
  text-decoration: none;
  font-size: 13px;
  font-weight: 650;
}
.whitepaper-card-cta:hover { background: #125a44; color: #fff; }
.whitepaper-card-cta:focus-visible { outline: 3px solid #9ae5cb; outline-offset: 3px; }
.whitepaper-thanks-title { margin: 0 0 12px; font-size: 18px; line-height: 1.5; }
.whitepaper-thanks-panel .submit-row { margin-top: 16px; }
@media (max-width: 900px) {
  .news-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .whitepaper-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-columns { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .news-grid { grid-template-columns: 1fr; }
  .whitepaper-grid { grid-template-columns: 1fr; }
  .footer-columns { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 24px; }
}