.brl-seminar-page {
  --brl-seminar-blue: #0068b7;
  --brl-seminar-blue-dark: #004f9f;
  --brl-seminar-ink: #111827;
  --brl-seminar-muted: #64748b;
  --brl-seminar-subtle: #8a96a8;
  --brl-seminar-line: #d9e2ec;
  --brl-seminar-bg: #f5f8fb;
  --brl-seminar-card: #ffffff;
  --brl-seminar-shadow: 0 14px 30px rgb(20 45 80 / 0.10);
  --brl-seminar-radius-lg: 22px;
  --brl-seminar-radius-md: 16px;
  --brl-seminar-content-width: 1180px;

  color: var(--brl-seminar-ink);
  background:
    radial-gradient(circle at top left, rgb(0 104 183 / 0.08), transparent 32rem),
    linear-gradient(180deg, #fff 0%, var(--brl-seminar-bg) 100%);
}

.brl-seminar-page *,
.brl-seminar-page *::before,
.brl-seminar-page *::after {
  box-sizing: border-box;
}

.brl-seminar-page a {
  color: inherit;
}

.brl-seminar__main {
  width: min(var(--brl-seminar-content-width), calc(100% - 40px));
  margin: 0 auto;
  padding: 48px 0 84px;
}

.brl-seminar__hero {
  margin-bottom: 34px;
  padding: clamp(26px, 5vw, 48px);
  border: 1px solid rgb(217 226 236 / 0.95);
  border-radius: var(--brl-seminar-radius-lg);
  background: rgb(255 255 255 / 0.88);
  box-shadow: 0 10px 24px rgb(20 45 80 / 0.07);
}

.brl-seminar__eyebrow {
  margin: 0 0 8px;
  color: var(--brl-seminar-blue);
  font-size: 13px;
  font-weight: 780;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brl-seminar__hero h1 {
  margin: 0;
  font-size: clamp(36px, 5.6vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.brl-seminar__lead {
  max-width: 780px;
  margin: 18px 0 0;
  color: #344054;
  font-size: clamp(15px, 1.8vw, 18px);
  line-height: 1.85;
}

.brl-seminar__summary {
  display: inline-flex;
  align-items: center;
  margin: 22px 0 0;
  padding: 7px 14px;
  border: 1px solid rgb(0 104 183 / 0.18);
  border-radius: 999px;
  color: var(--brl-seminar-blue-dark);
  background: #f2f8ff;
  font-size: 14px;
  font-weight: 760;
}

.brl-seminar__archive {
  display: grid;
  gap: 16px;
}

.brl-seminar__year-group {
  overflow: hidden;
  border: 1px solid rgb(217 226 236 / 0.95);
  border-radius: var(--brl-seminar-radius-lg);
  background: var(--brl-seminar-card);
  box-shadow: 0 10px 24px rgb(20 45 80 / 0.07);
}

.brl-seminar__year-summary {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 10px 14px;
  align-items: center;
  min-height: 74px;
  padding: 18px 64px 18px 24px;
  cursor: pointer;
  list-style: none;
}

.brl-seminar__year-summary::-webkit-details-marker {
  display: none;
}

.brl-seminar__year-summary::after {
  position: absolute;
  right: 24px;
  top: 50%;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--brl-seminar-blue);
  content: "+";
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  transform: translateY(-50%);
}

.brl-seminar__year-group[open] .brl-seminar__year-summary::after {
  content: "−";
}

.brl-seminar__year {
  color: var(--brl-seminar-blue);
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
}

.brl-seminar__year-label {
  color: #263445;
  font-size: 16px;
  font-weight: 760;
}

.brl-seminar__year-count {
  justify-self: end;
  padding: 5px 11px;
  border-radius: 999px;
  color: var(--brl-seminar-blue-dark);
  background: #eef7ff;
  font-size: 13px;
  font-weight: 760;
}

.brl-seminar__list {
  display: grid;
  gap: 12px;
  padding: 0 18px 20px;
}

.brl-seminar__item {
  display: grid;
  gap: 10px;
  padding: 18px 20px;
  border: 1px solid rgb(217 226 236 / 0.9);
  border-radius: var(--brl-seminar-radius-md);
  background: linear-gradient(135deg, #fff 0%, #fbfdff 100%);
}

.brl-seminar__date-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  align-items: baseline;
}

.brl-seminar__date {
  color: var(--brl-seminar-blue-dark);
  font-size: 14px;
  font-weight: 780;
}

.brl-seminar__meta {
  color: var(--brl-seminar-subtle);
  font-size: 12px;
  font-weight: 600;
}

.brl-seminar__title {
  margin: 0;
  color: var(--brl-seminar-ink);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.45;
  font-weight: 780;
}

.brl-seminar__speaker-block {
  display: grid;
  grid-template-columns: minmax(180px, 0.8fr) minmax(240px, 1.2fr);
  gap: 10px 18px;
  color: #344054;
}

.brl-seminar__speaker,
.brl-seminar__affiliation {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
}

.brl-seminar__speaker span,
.brl-seminar__affiliation span {
  display: block;
  margin-bottom: 2px;
  color: var(--brl-seminar-muted);
  font-size: 11px;
  font-weight: 760;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

@media (hover: hover) {
  .brl-seminar__year-summary:hover {
    background: #f7fbff;
  }
}

@media (max-width: 720px) {
  .brl-seminar__main {
    width: min(100% - 28px, var(--brl-seminar-content-width));
    padding: 28px 0 64px;
  }

  .brl-seminar__hero {
    padding: 24px 20px;
  }

  .brl-seminar__year-summary {
    grid-template-columns: auto 1fr;
    padding: 16px 56px 16px 18px;
  }

  .brl-seminar__year-count {
    grid-column: 1 / -1;
    justify-self: start;
  }

  .brl-seminar__list {
    padding: 0 12px 14px;
  }

  .brl-seminar__item {
    padding: 16px;
  }

  .brl-seminar__speaker-block {
    grid-template-columns: 1fr;
  }
}