body.lab-notebook {
  margin: 0;
  min-height: 100vh;
  color: #0b2242;
  background:
    radial-gradient(circle at 16% 8%, rgba(49, 156, 234, 0.22), transparent 30%),
    radial-gradient(circle at 76% 0%, rgba(143, 198, 252, 0.34), transparent 34%),
    linear-gradient(180deg, #f7fcff 0%, #eef7ff 38%, #f9fcff 100%);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.66;
}

.lab-notebook a {
  color: inherit;
  text-decoration: none;
}

.lab-notebook-page {
  width: min(1180px, calc(100vw - 72px));
  margin: 0 auto;
  padding: 28px 0 52px;
}

.lab-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 14px 0 24px;
  border-bottom: 1px solid #c8dff4;
}

.lab-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.lab-brand-mark,
.lab-brand-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
}

.lab-brand-mark {
  background:
    radial-gradient(circle at 35% 30%, #ffffff 0 12%, transparent 13%),
    linear-gradient(145deg, #319cea 0%, #97cfff 58%, #0b2242 59%, #151e3b 100%);
  border: 1px solid rgba(11, 34, 66, 0.15);
  box-shadow: 0 8px 22px rgba(21, 30, 59, 0.08);
}

.lab-brand-avatar {
  object-fit: cover;
  border: 1px solid rgba(11, 34, 66, 0.15);
  box-shadow: 0 8px 22px rgba(21, 30, 59, 0.08);
}

.lab-brand strong {
  display: block;
  font-size: 16px;
}

.lab-brand span span {
  display: block;
  margin-top: 1px;
  color: #697a92;
  font-size: 13px;
}

.lab-nav {
  display: flex;
  gap: 20px;
  color: #4a5573;
  font-size: 14px;
}

.lab-nav a {
  border-bottom: 0;
}

.lab-nav .active {
  color: #0b2242;
  font-weight: 750;
  border-bottom: 2px solid #c77844;
}

.lab-hero {
  display: block;
  padding: 44px 0 30px;
}

.lab-site-frame {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.lab-main-column {
  min-width: 0;
}

.lab-author-sidebar {
  position: sticky;
  top: 24px;
  padding-top: 44px;
  min-width: 0;
}

.lab-author-sidebar .bio-photo {
  display: block;
  width: 100px;
  height: 100px;
  object-fit: cover;
  margin: 0 0 1rem;
  border-radius: 50%;
  border: 2px solid rgba(146, 188, 231, .65);
  box-shadow: 0 10px 26px rgba(21, 30, 59, 0.08);
}

.lab-author-sidebar h4 {
  margin: 0 0 .45rem;
  color: #0b2242;
  font-size: 1.1rem;
  font-weight: 760;
}

.lab-author-sidebar p {
  margin: 0 0 .75rem;
  color: #52677f;
  font-size: .9rem;
  line-height: 1.7;
}

.lab-author-sidebar .social-links {
  margin-top: 1.15rem;
}

.lab-author-sidebar .social-links p {
  margin: .45rem 0;
  font-size: .92rem;
}

.lab-author-sidebar a {
  color: #0b5f9e;
  border-bottom: 0;
}

.lab-eyebrow {
  margin: 0 0 10px;
  color: #226fa9;
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.lab-notebook h1,
.lab-notebook h2,
.lab-notebook h3,
.lab-notebook p {
  margin-top: 0;
}

.lab-notebook h1,
.lab-notebook h2,
.lab-notebook h3,
.lab-notebook h4,
.lab-notebook h5,
.lab-notebook h6 {
  color: #0b2242;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
  font-weight: 750;
  letter-spacing: 0;
}

.lab-hero h1 {
  margin-bottom: 16px;
  max-width: 780px;
  font-size: 48px;
  line-height: 1.12;
  letter-spacing: 0;
}

.lab-lead {
  max-width: 760px;
  margin-bottom: 0;
  color: #43556e;
  font-size: 18px;
}

.lab-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  align-items: start;
}

.lab-simple-index {
  max-width: 820px;
  padding: 48px 0 72px;
}

.lab-simple-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.lab-simple-switch a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid #b9d7f2;
  border-radius: 999px;
  color: #0b5f9e;
  font-size: 14px;
  font-weight: 700;
  background: rgba(251, 253, 255, .56);
}

.lab-simple-switch a.active,
.lab-simple-switch a:hover {
  color: #0b2242;
  border-color: #5da9df;
  background: #fff;
}

.lab-simple-head {
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid #b9d7f2;
}

.lab-simple-head h1 {
  margin: 0;
  color: #061b3a;
  font-size: 44px;
  line-height: 1.08;
}

.lab-simple-list {
  display: grid;
}

.lab-simple-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 1px solid rgba(137, 184, 227, .55);
  color: #0b2242;
}

.lab-simple-item:hover {
  color: #0b5f9e;
}

.lab-simple-item span {
  min-width: 0;
  font-size: 19px;
  font-weight: 760;
  line-height: 1.35;
}

.lab-simple-item time {
  color: #5b6e85;
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
}

.lab-rail {
  display: grid;
  gap: 14px;
}

.lab-rail-box,
.lab-sheet,
.lab-topic-card,
.lab-entry-card,
.lab-article-paper {
  background: rgba(251, 253, 255, 0.9);
  border: 1px solid #c8dff4;
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(21, 30, 59, 0.08);
  backdrop-filter: blur(10px);
}

.lab-rail-box {
  padding: 18px;
  border-color: #92bce7;
  box-shadow: none;
}

.lab-rail-box h2 {
  margin-bottom: 8px;
  color: #0b2242;
  font-size: 19px;
  line-height: 1.25;
}

.lab-rail-box p {
  margin-bottom: 0;
  color: #697a92;
  font-size: 14px;
}

.lab-rail-list {
  display: grid;
  gap: 9px;
  margin-top: 15px;
}

.lab-rail-item {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 9px;
  border-bottom: 1px solid rgba(146, 188, 231, .55);
  color: #4a5573;
  font-size: 13px;
}

.lab-rail-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.lab-rail-item b {
  color: #0b2242;
}

.lab-section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
  padding-bottom: 9px;
  border-bottom: 1px solid #c8dff4;
}

.lab-section-head h2 {
  margin: 0;
  font-size: 22px;
}

.lab-section-head span {
  color: #697a92;
  font-size: 13px;
}

.lab-sheet {
  padding: 22px;
}

.lab-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 18px;
  margin-bottom: 20px;
}

.lab-observation {
  padding: 20px;
  border: 1px solid #c8dff4;
  border-left: 5px solid #319cea;
  border-radius: 6px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.88), rgba(245,250,255,.88)),
    repeating-linear-gradient(0deg, transparent 0 31px, rgba(146,188,231,.22) 32px 33px);
}

.lab-label {
  margin-bottom: 8px;
  color: #226fa9;
  font-size: 12px;
  font-weight: 850;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.lab-observation h3 {
  margin-bottom: 10px;
  font-size: 25px;
  line-height: 1.28;
}

.lab-observation p {
  margin-bottom: 16px;
  color: #43556e;
}

.lab-meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: #697a92;
  font-size: 13px;
}

.lab-stamp {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 24px;
  padding: 2px 9px;
  color: #c77844;
  background: #fff0e5;
  border: 1px solid #f0c9ae;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 760;
}

.lab-protocol {
  display: grid;
  gap: 10px;
}

.lab-protocol-row {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 12px;
  padding: 12px;
  border: 1px solid #c8dff4;
  border-radius: 6px;
  background: rgba(237, 246, 255, .66);
}

.lab-protocol-row b {
  color: #0b2242;
  font-size: 13px;
}

.lab-protocol-row span {
  color: #50637b;
  font-size: 13px;
}

.lab-entry-list,
.lab-matrix {
  display: grid;
  gap: 10px;
}

.lab-entry-card {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr) 112px;
  gap: 16px;
  align-items: center;
  padding: 15px 16px;
  box-shadow: none;
}

.lab-entry-card time,
.lab-entry-card .lab-state {
  color: #697a92;
  font-size: 13px;
  font-weight: 730;
}

.lab-entry-card h3 {
  margin-bottom: 3px;
  font-size: 18px;
  line-height: 1.35;
}

.lab-entry-card p {
  margin-bottom: 0;
  color: #5b6e85;
  font-size: 14px;
}

.lab-entry-card .lab-state {
  color: #226fa9;
  text-align: right;
}

.lab-topic-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}

.lab-topic-card {
  padding: 18px;
  box-shadow: none;
}

.lab-topic-card h3 {
  margin-bottom: 9px;
  font-size: 21px;
  line-height: 1.25;
}

.lab-topic-card p {
  min-height: 68px;
  margin-bottom: 14px;
  color: #4f637b;
  font-size: 14px;
}

.lab-topic-foot {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding-top: 13px;
  border-top: 1px solid #c8dff4;
}

.lab-topic-foot b {
  display: block;
  color: #0b2242;
  font-size: 18px;
  line-height: 1;
}

.lab-topic-foot span {
  color: #697a92;
  font-size: 12px;
}

.lab-matrix-row {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr) 116px;
  gap: 14px;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid #c8dff4;
  border-radius: 6px;
  background: rgba(251,253,255,.92);
}

.lab-matrix-row b,
.lab-matrix-row span {
  color: #697a92;
  font-size: 13px;
}

.lab-matrix-row strong {
  display: block;
  margin-bottom: 2px;
  font-size: 17px;
}

.lab-matrix-row p {
  margin-bottom: 0;
  color: #5b6e85;
  font-size: 13px;
}

.lab-matrix-row span {
  color: #226fa9;
  font-weight: 750;
  text-align: right;
}

.lab-detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  align-items: start;
}

.lab-detail-rail {
  display: grid;
  gap: 14px;
  position: sticky;
  top: 18px;
}

.lab-toc-list {
  display: grid;
  gap: 9px;
  margin-top: 14px;
  color: #4a5573;
  font-size: 14px;
}

.lab-toc-list a {
  display: block;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(146, 188, 231, .48);
}

.lab-toc-list a:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.lab-article-paper {
  padding: 36px 42px 44px;
  background:
    linear-gradient(180deg, rgba(251,253,255,.96), rgba(251,253,255,.92)),
    repeating-linear-gradient(0deg, transparent 0 31px, rgba(146,188,231,.17) 32px 33px);
}

.lab-article-head {
  padding-bottom: 22px;
  margin-bottom: 24px;
  border-bottom: 1px solid #c8dff4;
}

.lab-article-head h1 {
  max-width: 850px;
  margin-bottom: 14px;
  font-size: 44px;
  line-height: 1.16;
}

.lab-article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: #697a92;
  font-size: 13px;
}

.lab-article-body {
  max-width: 790px;
}

.lab-article-body h2 {
  margin: 34px 0 12px;
  padding-top: 4px;
  font-size: 25px;
}

.lab-article-body h3 {
  margin: 24px 0 10px;
  font-size: 20px;
}

.lab-article-body p {
  margin-bottom: 18px;
  color: #334862;
}

.lab-article-body blockquote {
  margin: 22px 0;
  padding: 16px 18px;
  color: #324b66;
  background: rgba(220, 236, 255, .66);
  border-left: 4px solid #319cea;
  border-radius: 6px;
}

.lab-formula-box,
.lab-note-box {
  margin: 22px 0;
  padding: 16px 18px;
  border: 1px solid #c8dff4;
  border-radius: 6px;
  background: rgba(237, 246, 255, .72);
}

.lab-formula-box {
  color: #0b2242;
  font-family: "Times New Roman", "Noto Serif SC", serif;
  font-size: 18px;
  text-align: center;
}

.lab-note-box b {
  display: block;
  margin-bottom: 6px;
  color: #226fa9;
  font-size: 13px;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.lab-topic-summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin: 18px 0 0;
}

.lab-topic-summary div {
  padding: 12px;
  border: 1px solid #c8dff4;
  border-radius: 6px;
  background: rgba(237,246,255,.62);
}

.lab-topic-summary b {
  display: block;
  color: #0b2242;
  font-size: 22px;
  line-height: 1.1;
}

.lab-topic-summary span {
  color: #697a92;
  font-size: 12px;
}

.lab-experiment-table,
.lab-timeline {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.lab-experiment-row {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 14px;
  padding: 12px 14px;
  border: 1px solid #c8dff4;
  border-radius: 6px;
  background: rgba(237,246,255,.52);
}

.lab-experiment-row b {
  color: #0b2242;
}

.lab-experiment-row span {
  color: #50637b;
}

.lab-timeline-item {
  display: grid;
  grid-template-columns: 116px minmax(0, 1fr);
  gap: 18px;
  padding: 18px;
  border: 1px solid #c8dff4;
  border-radius: 6px;
  background: rgba(251,253,255,.88);
}

.lab-timeline-item time {
  color: #226fa9;
  font-size: 13px;
  font-weight: 760;
}

.lab-timeline-item h3 {
  margin: 0 0 6px;
  font-size: 19px;
}

.lab-timeline-item p {
  margin: 0;
  color: #52677f;
  font-size: 14px;
}

@media (max-width: 960px) {
  .lab-notebook-page {
    width: calc(100vw - 32px);
  }

  .lab-nav {
    display: none;
  }

  .lab-site-frame {
    grid-template-columns: 1fr;
  }

  .lab-author-sidebar {
    position: static;
    display: grid;
    grid-template-columns: 82px minmax(0, 1fr);
    gap: 14px;
    align-items: start;
    padding: 22px 0 0;
  }

  .lab-author-sidebar .bio-photo {
    grid-column: 1;
    grid-row: 1 / span 2;
    width: 72px;
    height: 72px;
    margin: 0;
  }

  .lab-author-sidebar h4 {
    grid-column: 2;
    grid-row: 1;
    margin: 4px 0 2px;
  }

  .lab-author-sidebar > p {
    grid-column: 2;
    grid-row: 2;
    margin: 0;
  }

  .lab-author-sidebar .social-links {
    grid-column: 1 / -1;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 0;
  }

  .lab-author-sidebar .social-links p {
    margin: 0;
  }

  .lab-simple-index {
    padding: 40px 0 58px;
  }

  .lab-simple-head h1 {
    font-size: 36px;
  }

  .lab-simple-item {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 16px 0;
  }

  .lab-simple-item span {
    font-size: 18px;
  }

  .lab-workspace,
  .lab-grid,
  .lab-topic-grid,
  .lab-entry-card,
  .lab-matrix-row,
  .lab-detail-layout,
  .lab-timeline-item,
  .lab-experiment-row {
    grid-template-columns: 1fr;
  }

  .lab-hero h1,
  .lab-article-head h1 {
    font-size: 34px;
  }

  .lab-entry-card .lab-state,
  .lab-matrix-row span {
    text-align: left;
  }

  .lab-detail-rail {
    position: static;
  }

  .lab-article-paper {
    padding: 26px 22px 30px;
  }

  .lab-topic-summary {
    grid-template-columns: repeat(2, 1fr);
  }
}