body {
  display: flex;
  min-height: 100vh;
  min-height: 100dvh;
  flex-direction: column;
}

main { flex: 1 0 auto; }

.blog-hero {
  padding: 84px 0 72px;
  border-bottom: 1px solid var(--border);
  background: #fff;
}

.blog-hero-compact { padding: 64px 0 52px; }
.blog-hero-inner { max-width: 820px; }
.blog-eyebrow {
  margin-bottom: 14px;
  color: var(--primary);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}
.blog-hero h1 {
  margin-bottom: 14px;
  color: var(--text);
  font-size: clamp(2.25rem, 6vw, 4.2rem);
  line-height: 1.12;
  letter-spacing: -0.04em;
}
.blog-hero p:last-child {
  max-width: 620px;
  color: var(--text-secondary);
  font-size: 1.08rem;
}

.blog-list-page {
  max-width: 820px;
  padding-top: 32px;
  padding-bottom: 48px;
}
.blog-list-card {
  padding: 26px 32px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: #fff;
  box-shadow: var(--shadow-md);
}
.blog-list-item {
  padding: 0 0 14px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.blog-list-item:last-child { margin-bottom: 0; }
.blog-list-meta,
.blog-article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-secondary);
}
.blog-list-meta {
  margin-bottom: 4px;
  font-size: 0.66rem;
}
.blog-list-meta a:hover { color: var(--primary); }
.blog-pin {
  padding: 1px 6px;
  border-radius: 4px;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 700;
}
.blog-list-item h2 {
  margin-bottom: 4px;
  color: var(--text);
  font-size: clamp(0.96rem, 1.8vw, 1.14rem);
  line-height: 1.34;
  letter-spacing: -0.02em;
}
.blog-list-item h2 a:hover { color: var(--primary); }
.blog-list-item > p {
  display: -webkit-box;
  margin-bottom: 5px;
  overflow: hidden;
  color: var(--text-secondary);
  font-size: 0.76rem;
  line-height: 1.5;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 1;
}
.blog-read-more {
  color: var(--primary);
  font-size: 0.7rem;
  font-weight: 600;
}
.blog-read-more:hover { color: var(--primary-dark); }

.blog-category-heading {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 36px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.88rem;
}
.blog-category-heading a:hover { color: var(--primary); }
.blog-category-heading strong { color: var(--text); }

.blog-empty {
  padding: 72px 24px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  text-align: center;
}
.blog-empty h2 { margin-bottom: 8px; font-size: 1.3rem; }
.blog-empty p { color: var(--text-secondary); }
.blog-empty a { color: var(--primary); }

.blog-pagination {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 18px;
  margin-top: 44px;
  color: var(--text-secondary);
  font-size: 0.88rem;
}
.blog-pagination a { color: var(--primary); font-weight: 600; }
.blog-pagination a:last-child { text-align: right; }

.blog-article { background: #fff; }
.blog-article-header {
  position: relative;
  max-width: 820px;
  padding-top: 40px;
  padding-bottom: 28px;
}
.blog-article-header::after {
  content: '';
  position: absolute;
  right: 24px;
  bottom: 0;
  left: 24px;
  height: 1px;
  background: var(--border);
}
.blog-breadcrumb {
  display: flex;
  gap: 9px;
  margin-bottom: 28px;
  color: var(--text-secondary);
  font-size: 0.84rem;
}
.blog-breadcrumb a:hover { color: var(--primary); }
.blog-article-header h1 {
  margin-bottom: 20px;
  color: var(--text);
  font-size: clamp(2rem, 6vw, 3.75rem);
  line-height: 1.18;
  letter-spacing: -0.04em;
}
.blog-article-summary {
  max-width: 720px;
  margin-bottom: 24px;
  color: var(--text-secondary);
  font-size: 1.08rem;
  line-height: 1.9;
}
.blog-article-meta { margin-bottom: 0; flex-wrap: wrap; font-size: 0.82rem; }
.blog-article-source {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  margin-top: 14px;
  color: var(--text-secondary);
  font-size: 0.82rem;
}
.blog-article-source a { color: var(--primary); font-weight: 600; }

.blog-prose {
  max-width: 820px;
  padding-top: 28px;
  padding-bottom: 64px;
  color: #293142;
  font-size: 1.02rem;
  line-height: 2;
}
.blog-prose > * + * { margin-top: 1.4em; }
.blog-prose h1,
.blog-prose h2,
.blog-prose h3,
.blog-prose h4 {
  margin-top: 2em;
  color: var(--text);
  line-height: 1.4;
}
.blog-prose h2 { font-size: 1.65rem; }
.blog-prose h3 { font-size: 1.3rem; }
.blog-prose ul,
.blog-prose ol { padding-left: 1.6em; }
.blog-prose ul { list-style: disc; }
.blog-prose ol { list-style: decimal; }
.blog-prose li + li { margin-top: 0.45em; }
.blog-prose a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.blog-prose blockquote {
  padding: 2px 0 2px 20px;
  border-left: 3px solid var(--primary);
  color: var(--text-secondary);
}
.blog-prose code {
  padding: 0.15em 0.38em;
  border-radius: 4px;
  background: var(--bg-gray);
  font-size: 0.9em;
}
.blog-prose pre {
  overflow-x: auto;
  padding: 20px;
  border-radius: 9px;
  background: #1a1a2e;
  color: #eef1f6;
  line-height: 1.7;
}
.blog-prose pre code { padding: 0; background: transparent; color: inherit; }
.blog-prose img {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  margin: 2em auto;
  border-radius: 8px;
}
.blog-prose table {
  display: block;
  width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
}
.blog-prose th,
.blog-prose td {
  padding: 10px 14px;
  border: 1px solid var(--border);
  text-align: left;
}
.blog-prose th { background: var(--bg-gray); }

.blog-study-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  max-width: 820px;
  margin-bottom: 0;
  padding: 12px 18px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-gray);
}
.blog-study-card p { color: var(--text-secondary); font-size: 0.76rem; line-height: 1.45; }
.blog-study-actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
}
.blog-study-summary { margin-left: auto; text-align: right; }
.blog-study-summary p { color: var(--text); font-weight: 700; }
.blog-study-button {
  display: inline-flex;
  flex: 0 0 auto;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 8px 13px;
  border: 1px solid #c7d1dc;
  border-radius: 9px;
  background: #fff;
  color: #52687e;
  cursor: pointer;
  font: inherit;
  font-size: 12px;
  font-weight: 750;
  line-height: 1.2;
  box-shadow: 0 1px 2px rgba(26, 36, 48, 0.03);
  transition: border-color 0.16s, background 0.16s, color 0.16s, box-shadow 0.16s;
}
.blog-study-button:hover:not(:disabled) {
  border-color: #9eafbf;
  background: #f4f7fa;
  color: #34495e;
  box-shadow: 0 4px 12px rgba(35, 47, 61, 0.08);
}
.blog-study-button:disabled { cursor: wait; opacity: 0.65; }
.blog-study-button-icon { flex: 0 0 auto; }
.essay-bilingual-toggle,
.essay-read-aloud-toggle {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 40px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: #fff;
  color: var(--text-secondary);
  cursor: pointer;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(26, 36, 48, 0.03);
  transition: border-color 0.16s, background 0.16s, color 0.16s, box-shadow 0.16s;
}
.essay-bilingual-toggle[hidden],
.essay-read-aloud-toggle[hidden] { display: none; }
.essay-bilingual-toggle:hover:not(:disabled),
.essay-read-aloud-toggle:hover:not(:disabled),
.essay-read-aloud-toggle.active {
  border-color: #9eafbf;
  background: #f4f7fa;
  color: #34495e;
  box-shadow: 0 4px 12px rgba(35, 47, 61, 0.08);
}
.essay-read-aloud-toggle:disabled { cursor: not-allowed; opacity: 0.55; }
.essay-read-aloud-toggle svg { flex: 0 0 auto; }
.essay-bilingual-track {
  position: relative;
  width: 28px;
  height: 16px;
  border-radius: 999px;
  background: #c8ced6;
  transition: background-color 0.18s ease;
}
.essay-bilingual-track::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 2px rgba(26, 26, 46, 0.18);
  transition: transform 0.18s ease;
}
.essay-bilingual-toggle[aria-checked='true'] .essay-bilingual-track { background: var(--primary); }
.essay-bilingual-toggle[aria-checked='true'] .essay-bilingual-track::after { transform: translateX(12px); }
.essay-reader-controls {
  display: flex;
  flex: 1 0 100%;
  align-items: center;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.essay-reader-controls[hidden] { display: none; }
.essay-reader-transport { display: flex; align-items: center; gap: 6px; }
.essay-reader-control-button {
  display: inline-grid;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  padding: 0;
  place-items: center;
  border: 1px solid #c7d1dc;
  border-radius: 8px;
  background: #fff;
  color: #52687e;
  cursor: pointer;
  transition: border-color 0.16s, background 0.16s, color 0.16s, transform 0.16s;
}
.essay-reader-control-button:hover:not(:disabled) {
  border-color: #9eafbf;
  background: #f4f7fa;
  color: #34495e;
}
.essay-reader-control-button:active:not(:disabled) { transform: scale(0.95); }
.essay-reader-control-button:disabled { cursor: not-allowed; opacity: 0.4; }
.essay-reader-play-button {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
}
.essay-reader-play-button:hover:not(:disabled) {
  border-color: var(--primary-dark);
  background: var(--primary-dark);
  color: #fff;
}
.essay-reader-play-icon[hidden],
.essay-reader-pause-icon[hidden],
.essay-reader-loading-icon[hidden] { display: none; }
.essay-reader-loading-icon { animation: essay-reader-spin .8s linear infinite; }
@keyframes essay-reader-spin {
  to { transform: rotate(360deg); }
}
.essay-reader-status {
  min-width: 0;
  flex: 1 1 auto;
  overflow: hidden;
  color: var(--text);
  font-size: 0.76rem;
  font-weight: 650;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.essay-reader-setting,
.essay-reader-rate {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 0.72rem;
  font-weight: 650;
}
.essay-reader-voice select {
  width: min(180px, 28vw);
}
.essay-reader-step input {
  width: 48px;
  height: 34px;
  padding: 0 6px;
  border: 1px solid #c7d1dc;
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  font: inherit;
  text-align: center;
}
.essay-reader-voice select,
.essay-reader-rate select {
  height: 34px;
  padding: 0 24px 0 9px;
  border: 1px solid #c7d1dc;
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  cursor: pointer;
  font: inherit;
}
.essay-reader-voice select:disabled { cursor: not-allowed; opacity: 0.6; }
.essay-reader-close-button { border-color: transparent; background: transparent; }
.blog-prose.essay-translations-hidden > .essay-translation { display: none; }
.essay-reader-paragraph.is-play-target { cursor: pointer; }
.essay-reader-paragraph-hint {
  position: fixed;
  z-index: 1000;
  padding: 6px 10px;
  border-radius: 6px;
  background: #243447;
  color: #fff;
  font-size: 12px;
  line-height: 1.5;
  white-space: nowrap;
  pointer-events: none;
  box-shadow: 0 2px 8px #0002;
}
.essay-reader-paragraph-hint[hidden] { display: none; }
.essay-article .essay-reader-word {
  border-radius: 3px;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
  transition: background-color 0.12s, box-shadow 0.12s;
}
.essay-article .essay-reader-word.is-active,
.essay-article .essay-reader-word.is-active > .essay-marked-word {
  background: #bde8ff;
  box-shadow: inset 0 -2px 0 #3da5d4;
}
.essay-article .essay-marked-word {
  margin: 0;
  padding: 0 0.08em;
  border-radius: 3px;
  background: #fff0a8;
  color: inherit;
  box-shadow: inset 0 -1px 0 #e5ca63;
  cursor: pointer;
}
.essay-article .blog-article-header::after { display: none; }
.essay-study-card {
  position: sticky;
  top: 65px;
  z-index: 90;
  max-width: 772px;
  margin-top: 0;
}

.blog-article-nav {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  max-width: 820px;
  padding-top: 32px;
  padding-bottom: 80px;
}
.blog-article-nav::before {
  content: '';
  position: absolute;
  top: 0;
  right: 24px;
  left: 24px;
  height: 1px;
  background: var(--border);
}
.blog-article-nav span {
  display: block;
  margin-bottom: 6px;
  color: var(--text-secondary);
  font-size: 0.78rem;
}
.blog-article-nav a { color: var(--text); font-weight: 700; }
.blog-article-nav a:hover { color: var(--primary); }
.blog-next-post { text-align: right; }

@media (max-width: 760px) {
  .blog-hero { padding: 58px 0 48px; }
  .blog-list-page { padding-top: 18px; padding-bottom: 34px; }
  .blog-list-card { padding: 20px 18px; border-radius: 12px; }
  .blog-article-header { padding-top: 28px; padding-bottom: 20px; }
  .blog-prose { padding-top: 20px; }
  .blog-study-card { width: calc(100% - 48px); margin-right: 24px; margin-left: 24px; padding: 12px 16px; }
}

@media (max-width: 480px) {
  .blog-list-card { padding: 18px 14px; }
  .blog-article-nav { grid-template-columns: 1fr; }
  .blog-next-post { text-align: left; }
  .blog-study-card { gap: 12px; }
  .blog-study-actions { flex: 1 1 100%; flex-wrap: wrap; gap: 6px; }
  .essay-reader-controls { flex-wrap: wrap; gap: 9px; }
  .essay-reader-status { order: 3; flex-basis: 100%; }
  .essay-reader-close-button { margin-left: auto; }
}

@media (prefers-reduced-motion: reduce) {
  .essay-reader-loading-icon { animation: none; }
  .essay-bilingual-track,
  .essay-bilingual-track::after,
  .essay-reader-word,
  .essay-reader-control-button { transition: none; }
}