.research-note {
  --note-accent: var(--accent);
  --note-surface: #fcf8f1;
  --note-border: #eadbc7;
  --note-icon-bg: #f2e3cf;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  margin: 0;
  padding: 20px;
  border: 1px solid var(--note-border);
  border-left: 4px solid var(--note-accent);
  border-radius: 4px;
  background: var(--note-surface);
}

.research-note-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0 12px;
}

.research-note--agents,
.notes-index__item--agents {
  --note-accent: #a35d13;
  --note-surface: #fcf7ef;
  --note-border: #ead8bf;
  --note-icon-bg: #f2e2cb;
}

.research-note--coordination,
.notes-index__item--coordination {
  --note-accent: #2f6b58;
  --note-surface: #f1f7f4;
  --note-border: #cfe1da;
  --note-icon-bg: #dcebe5;
}

.research-note--alignment,
.notes-index__item--alignment {
  --note-accent: #193f7d;
  --note-surface: #f3f6fb;
  --note-border: #d5dfed;
  --note-icon-bg: #dfe8f5;
}

.research-note__icon,
.notes-index__icon {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  background: var(--note-icon-bg);
  color: var(--note-accent);
}

.research-note__icon svg,
.notes-index__icon svg {
  width: 23px;
  height: 23px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.research-note p {
  margin-bottom: 7px;
}

.research-note__meta {
  color: var(--muted);
  font-size: 0.9rem;
}

.research-note__meta span {
  color: var(--note-accent);
  font-weight: 700;
}

.research-note__title {
  margin-top: 3px;
  font-size: 1.08rem;
  font-weight: 700;
}

.research-note__links {
  font-size: 0.96rem;
}

.note-paper {
  margin: 2px 0 9px;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

.note-paper span {
  color: var(--text);
  font-weight: 700;
}

.note-paper a {
  font-weight: 600;
}

.note-paper--header {
  max-width: 720px;
  margin-bottom: 12px;
  font-size: 0.88rem;
}

.paper-coming-soon {
  color: var(--muted);
  font-style: italic;
}

.research-notes-all {
  margin-top: 14px;
  font-size: 0.96rem;
  font-weight: 700;
}

.notes-intro {
  max-width: 720px;
  color: var(--muted);
}

.notes-year {
  margin-top: 34px;
}

.notes-year h2 {
  margin-top: 0;
}

.notes-index {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.notes-index li {
  --note-accent: var(--accent);
  --note-surface: #fcf8f1;
  --note-border: #eadbc7;
  --note-icon-bg: #f2e3cf;
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr);
  gap: 18px;
  padding: 20px;
  border: 1px solid var(--note-border);
  border-left: 4px solid var(--note-accent);
  border-radius: 4px;
  background: var(--note-surface);
}

.notes-index__meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-start;
}

.notes-index time {
  color: var(--muted);
  font-size: 0.9rem;
}

.notes-index h3 {
  margin: 0 0 5px;
  font-size: 1.08rem;
}

.notes-index p {
  margin-bottom: 6px;
}

.note-topic {
  display: inline-block;
  width: fit-content;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--note-icon-bg);
  color: var(--note-accent);
  font-size: 0.85rem;
  font-weight: 700;
}

.note-header {
  margin-bottom: 28px;
}

.note-header h1 {
  margin: 10px 0 14px;
  font-size: clamp(2rem, 6vw, 3rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
}

.note-kicker,
.note-details,
.note-back {
  color: var(--muted);
  font-size: 0.94rem;
}

.note-kicker {
  color: var(--accent);
  font-weight: 700;
}

.note-summary {
  margin: 26px 0 34px;
  padding: 16px 18px;
  border-left: 3px solid var(--accent);
  background: #faf7f2;
}

.note-summary p:last-child {
  margin-bottom: 0;
}

.note-content {
  max-width: 760px;
}

.note-content h2 {
  margin-top: 36px;
}

.note-concepts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 20px 0 26px;
}

.note-concepts--two {
  grid-template-columns: repeat(2, 1fr);
}

.note-concepts div {
  padding: 14px;
  border: 1px solid var(--rule);
}

.note-concepts strong {
  color: var(--accent);
}

.note-concepts p {
  margin: 6px 0 0;
  font-size: 0.94rem;
}

.promo-intro {
  margin: 28px 0 20px;
  font-size: 1.08rem;
}

.promo-paper-highlight,
.promo-point {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 13px;
  align-items: start;
}

.promo-paper-highlight {
  margin: 20px 0 24px;
  padding: 16px 18px;
  border: 1px solid #cfe1da;
  border-left: 4px solid #2f6b58;
  border-radius: 4px;
  background: #f1f7f4;
}

.promo-flow {
  display: grid;
  gap: 11px;
  margin: 24px 0;
}

.promo-point {
  padding: 14px 16px;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: #fff;
}

.promo-icon {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 50%;
  background: #dcebe5;
  color: #2f6b58;
  font-size: 1rem;
  font-weight: 700;
}

.promo-paper-highlight p,
.promo-point p {
  margin: 3px 0 0;
}

.promo-results {
  margin: 26px 0;
  padding: 18px 20px;
  border: 1px solid #cfe1da;
  border-radius: 4px;
  background: #f1f7f4;
}

.promo-results strong {
  color: #2f6b58;
}

.note-resources {
  margin-top: 34px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
}

.note-principle {
  margin: 28px 0 34px;
  padding: 8px 0 8px 20px;
  border-left: 3px solid var(--accent);
  color: var(--text);
  font-size: 1.18rem;
  font-style: italic;
}

@media (max-width: 680px) {
  .research-note-list {
    grid-template-columns: 1fr;
  }

  .research-note {
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 12px;
    padding: 15px 16px;
  }

  .research-note__icon,
  .notes-index__icon {
    width: 38px;
    height: 38px;
  }

  .note-concepts {
    grid-template-columns: 1fr;
  }

  .notes-index li {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 16px;
  }

  .notes-index__meta {
    flex-direction: row;
    gap: 10px;
    align-items: center;
  }
}