@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400&family=Noto+Sans+JP:wght@300;400;500&display=swap');

/* ===== Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --pink-deep: #d4748c;
  --pink-mid: #e8a0b0;
  --pink-light: #f5d0d8;
  --pink-pale: #fdf0f2;
  --beige: #f5ede8;
  --text-dark: #5a3d35;
  --text-mid: #7a5c55;
  --text-light: #a08880;
  --white: #ffffff;
  --off-white: #fefaf8;
}

body {
  font-family: 'Noto Sans JP', sans-serif;
  background: var(--off-white);
  color: var(--text-dark);
  line-height: 1.9;
  font-size: 15px;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ===== Header ===== */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--pink-light);
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header-logo {
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.logo-en {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 22px;
  font-weight: 300;
  color: var(--pink-deep);
  letter-spacing: 0.05em;
}
.logo-ja {
  font-size: 10px;
  font-weight: 300;
  color: var(--text-light);
  letter-spacing: 0.1em;
}
.header-nav {
  display: flex;
  gap: 28px;
}
.header-nav a {
  font-size: 12px;
  font-weight: 300;
  color: var(--text-mid);
  letter-spacing: 0.1em;
  transition: color 0.2s;
}
.header-nav a:hover {
  color: var(--pink-deep);
}

/* ===== Main Layout ===== */
.blog-main {
  max-width: 740px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-light);
  letter-spacing: 0.05em;
  margin-bottom: 32px;
}
.breadcrumb a {
  color: var(--text-light);
  transition: color 0.2s;
}
.breadcrumb a:hover {
  color: var(--pink-deep);
}

/* ===== Eyecatch ===== */
.blog-eyecatch {
  width: 100%;
  aspect-ratio: 16 / 7;
  overflow: hidden;
  border-radius: 8px;
  margin-bottom: 32px;
  background: var(--pink-pale);
}
.blog-eyecatch img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== Blog Header ===== */
.blog-header {
  margin-bottom: 32px;
}
.blog-category {
  font-size: 11px;
  font-weight: 300;
  color: var(--pink-deep);
  letter-spacing: 0.15em;
  margin-bottom: 8px;
}
.blog-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 26px;
  font-weight: 400;
  color: var(--text-dark);
  line-height: 1.5;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}
.blog-date {
  font-size: 11px;
  font-weight: 300;
  color: var(--text-light);
  letter-spacing: 0.1em;
}

/* ===== Summary Box ===== */
.summary-box {
  background: var(--pink-pale);
  border-left: 3px solid var(--pink-deep);
  border-radius: 4px;
  padding: 20px 24px;
  margin: 32px 0;
}
.summary-label {
  font-size: 12px;
  font-weight: 400;
  color: var(--pink-deep);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}
.summary-list {
  list-style: none;
  padding: 0;
}
.summary-list li {
  font-size: 14px;
  font-weight: 300;
  color: var(--text-mid);
  padding: 4px 0 4px 16px;
  position: relative;
}
.summary-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--pink-deep);
  font-size: 12px;
}

/* ===== TOC ===== */
.toc {
  border: 1px solid var(--pink-light);
  border-radius: 8px;
  padding: 20px 24px;
  margin: 32px 0;
  background: var(--white);
}
.toc-title {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-mid);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}
.toc-list {
  padding-left: 20px;
}
.toc-list li {
  font-size: 13px;
  font-weight: 300;
  color: var(--text-mid);
  padding: 4px 0;
  line-height: 1.6;
}
.toc-list a {
  color: var(--pink-deep);
  transition: opacity 0.2s;
}
.toc-list a:hover {
  opacity: 0.7;
}

/* ===== Blog Body ===== */
.blog-body {
  margin-top: 40px;
}
.blog-lead {
  font-size: 15px;
  font-weight: 300;
  color: var(--text-mid);
  line-height: 2.2;
  margin-bottom: 40px;
}
.blog-body section {
  margin-bottom: 48px;
}
.blog-body h2 {
  font-size: 19px;
  font-weight: 400;
  color: var(--text-dark);
  letter-spacing: 0.05em;
  border-left: 3px solid var(--pink-deep);
  padding-left: 12px;
  margin-bottom: 16px;
  line-height: 1.5;
}
.blog-body h3 {
  font-size: 15px;
  font-weight: 400;
  color: var(--text-dark);
  letter-spacing: 0.05em;
  margin: 24px 0 10px;
}
.blog-body p {
  font-size: 15px;
  font-weight: 300;
  color: var(--text-mid);
  line-height: 2;
  margin-bottom: 16px;
}

/* ===== Note Box ===== */
.blog-note {
  background: var(--beige);
  border-radius: 4px;
  padding: 16px 20px;
  margin: 20px 0;
  font-size: 13px;
  color: var(--text-mid);
  line-height: 1.8;
}

/* ===== NG Box ===== */
.blog-ng {
  border: 1px solid var(--pink-light);
  border-radius: 4px;
  padding: 16px 20px;
  margin: 16px 0;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.ng-label {
  font-size: 11px;
  font-weight: 400;
  color: var(--white);
  background: var(--pink-deep);
  padding: 2px 8px;
  border-radius: 2px;
  letter-spacing: 0.05em;
  flex-shrink: 0;
  margin-top: 2px;
}
.blog-ng p {
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.8;
  margin: 0;
}

/* ===== List ===== */
.blog-list {
  padding-left: 0;
  list-style: none;
  margin: 16px 0;
}
.blog-list li {
  font-size: 14px;
  font-weight: 300;
  color: var(--text-mid);
  padding: 8px 0 8px 16px;
  border-bottom: 1px solid var(--pink-light);
  position: relative;
}
.blog-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--pink-mid);
}

/* ===== Related Articles ===== */
.related-articles {
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--pink-light);
}
.related-title {
  font-size: 12px;
  font-weight: 300;
  color: var(--text-light);
  letter-spacing: 0.15em;
  margin-bottom: 16px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.related-card {
  border: 1px solid var(--pink-light);
  border-radius: 8px;
  padding: 16px 20px;
  transition: border-color 0.2s;
  background: var(--white);
}
.related-card:hover {
  border-color: var(--pink-deep);
}
.related-card-title {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-dark);
  margin-bottom: 4px;
}
.related-card-desc {
  font-size: 12px;
  font-weight: 300;
  color: var(--text-light);
}

/* ===== Footer ===== */
footer {
  background: var(--white);
  border-top: 1px solid var(--pink-light);
  padding: 32px 24px;
  text-align: center;
}
.footer-inner {
  max-width: 1040px;
  margin: 0 auto;
}
.footer-logo {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 18px;
  font-weight: 300;
  color: var(--pink-deep);
  margin-bottom: 8px;
}
.footer-copy {
  font-size: 11px;
  font-weight: 300;
  color: var(--text-light);
  letter-spacing: 0.1em;
}