.forum-section {
  background:
    radial-gradient(circle at 14% 0%, rgba(0, 147, 205, .12), transparent 320px),
    radial-gradient(circle at 92% 12%, rgba(0, 37, 202, .12), transparent 360px),
    linear-gradient(180deg, #f3f8ff 0%, #fff 280px);
}

.forum-shell {
  max-width: 1240px;
}

.forum-filters {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  overflow-x: auto;
  border-bottom: 1px solid #dce3ec;
}

.forum-filters button {
  flex: 0 0 auto;
  min-width: 108px;
  min-height: 44px;
  padding: 0 20px;
  border: 0;
  border-radius: 6px;
  color: #17386d;
  background: #e8f0fa;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: color var(--motion-fast), background-color var(--motion-fast);
}

.forum-filters button:hover {
  color: #063bc0;
  background: #dce9f9;
}

.forum-filters button:focus-visible,
.forum-nav-group__items button:focus-visible,
.forum-mobile-selector select:focus-visible {
  outline: 3px solid rgba(6, 59, 192, .22);
  outline-offset: 2px;
}

.forum-filters button[aria-selected="true"] {
  color: #fff;
  background: #063bc0;
}

.forum-mobile-selector {
  display: none;
}

.forum-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.forum-sidebar {
  position: sticky;
  top: 100px;
  max-height: calc(100vh - 124px);
  padding: 8px;
  overflow-y: auto;
  border: 1px solid #dce3ec;
  border-radius: 8px;
  background: #fff;
  scrollbar-color: #aebbd0 transparent;
  scrollbar-width: thin;
}

.forum-nav-group[hidden] {
  display: none;
}

.forum-nav-group__items {
  display: grid;
  gap: 6px;
}

.forum-nav-group + .forum-nav-group {
  margin-top: 6px;
}

.forum-nav-group__items button {
  display: block;
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  overflow: visible;
  border: 0;
  border-radius: 5px;
  color: #253b60;
  background: #f0f5fb;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.65;
  text-align: left;
  text-overflow: clip;
  white-space: normal;
  overflow-wrap: anywhere;
  cursor: pointer;
  transition: color var(--motion-fast), background-color var(--motion-fast);
}

.forum-nav-group__items button:hover {
  color: #063bc0;
  background: #e5eefb;
}

.forum-nav-group__items button.is-active {
  color: #fff;
  background: #0879be;
}

.forum-details {
  min-width: 0;
}

.forum-detail {
  overflow: hidden;
  border: 1px solid #dce3ec;
  border-radius: 8px;
  background: #fff;
}

.forum-detail + .forum-detail {
  margin-top: 24px;
}

.forum-detail[hidden] + .forum-detail {
  margin-top: 0;
}

.forum-detail[hidden] {
  display: none;
}

.forum-detail__body {
  padding: 34px 38px 42px;
}

.forum-detail__header {
  padding-bottom: 24px;
  border-bottom: 1px solid #e4eaf1;
}

.forum-detail__heading {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  align-items: flex-start;
  justify-content: space-between;
}

.forum-detail__heading h2 {
  flex: 1 1 430px;
  min-width: 0;
  margin: 0;
  color: #102b5e;
  font-size: 27px;
  line-height: 1.45;
  text-wrap: pretty;
}

.forum-detail__time {
  flex: 0 0 auto;
  margin: 7px 0 0;
  color: #466589;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.6;
  white-space: nowrap;
}

.forum-article {
  margin-top: 32px;
}

.forum-article__source {
  width: 100%;
  max-width: 820px;
  margin: 0 auto;
}

.forum-article__section + .forum-article__section {
  margin-top: 52px;
}

.forum-article__section-title {
  margin: 0 0 26px;
  color: #102b5e;
  font-size: 21px;
  line-height: 1.5;
}

.forum-speaker + .forum-speaker {
  margin-top: 48px;
}

.forum-speaker__identity {
  display: grid;
  grid-template-columns: 124px minmax(0, 1fr);
  gap: 24px;
  align-items: center;
}

.forum-speaker__portrait {
  display: block;
  width: 124px;
  height: 124px;
  max-width: none;
  aspect-ratio: 1;
  border-radius: 50%;
  background: #e9f1fb;
  object-fit: cover;
  object-position: center top;
}

.forum-speaker__meta {
  min-width: 0;
}

.forum-speaker__name {
  margin: 0 0 8px;
  color: #0b55ac;
  font-size: 21px;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.forum-speaker__role {
  max-width: 52ch;
  margin: 0;
  color: #40658f;
  font-size: 15px;
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.forum-speaker__bio,
.forum-speaker__report {
  margin-top: 24px;
}

.forum-speaker__bio h4,
.forum-speaker__report h4 {
  margin: 0 0 10px;
  color: #243b5a;
  font-size: 16px;
  line-height: 1.6;
}

.forum-speaker__bio p,
.forum-speaker__report p {
  margin: 0;
  color: #35445b;
  font-size: 15px;
  line-height: 2;
  text-align: justify;
  overflow-wrap: anywhere;
}

.forum-speaker__bio p,
.forum-speaker__report-title,
.forum-speaker__report-abstract {
  text-indent: 2em;
}

.forum-speaker__report h4:not(:first-child) {
  margin-top: 20px;
}

.forum-article__source-link {
  margin-top: 32px;
  text-align: right;
}

.forum-article__source-link a {
  color: #063bc0;
  font-weight: 600;
}

.forum-article__source-link a:hover {
  color: #0f62a9;
  text-decoration: underline;
}

.forum-detail__status {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-top: 28px;
  padding: 22px 24px;
  border-radius: 6px;
  background: #f2f6fb;
}

.forum-detail__status-mark {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  margin-top: 7px;
  border-radius: 50%;
  background: #e7a630;
}

.forum-detail__status h3 {
  margin-bottom: 4px;
  color: #24324d;
  font-size: 17px;
}

.forum-detail__status p {
  color: var(--text-muted);
}

@media (max-width: 960px) {
  .forum-layout {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 20px;
  }

  .forum-detail__body {
    padding: 28px;
  }

  .forum-detail__heading h2 {
    flex-basis: 330px;
    font-size: 24px;
  }
}

@media (max-width: 760px) {
  .forum-section {
    padding-top: 30px;
  }

  .forum-filters {
    gap: 8px;
    margin-bottom: 18px;
    padding-bottom: 12px;
  }

  .forum-filters button {
    min-width: auto;
    min-height: 42px;
    padding: 0 15px;
    font-size: 14px;
  }

  .forum-mobile-selector {
    display: grid;
    gap: 8px;
    margin-bottom: 18px;
    color: #24324d;
    font-size: 14px;
    font-weight: 600;
  }

  .forum-mobile-selector select {
    width: 100%;
    min-height: 46px;
    padding: 0 40px 0 14px;
    border: 1px solid #ccd6e4;
    border-radius: 6px;
    color: #1e2f4d;
    background: #fff;
    font: inherit;
  }

  .forum-layout {
    grid-template-columns: 1fr;
  }

  .forum-sidebar {
    display: none;
  }

  .forum-detail + .forum-detail {
    margin-top: 18px;
  }

  .forum-detail[hidden] + .forum-detail {
    margin-top: 0;
  }

  .forum-detail__body {
    padding: 24px 20px 30px;
  }

  .forum-detail__header {
    padding-bottom: 20px;
  }

  .forum-detail__heading {
    flex-direction: column;
    gap: 8px;
  }

  .forum-detail__heading h2 {
    flex: 0 1 auto;
    font-size: 21px;
  }

  .forum-detail__time {
    margin-top: 0;
    white-space: normal;
  }

  .forum-article {
    margin-top: 26px;
  }

  .forum-article__section + .forum-article__section {
    margin-top: 42px;
  }

  .forum-article__section-title {
    margin-bottom: 22px;
    font-size: 19px;
  }

  .forum-speaker + .forum-speaker {
    margin-top: 40px;
  }

  .forum-speaker__identity {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 16px;
  }

  .forum-speaker__portrait {
    width: 92px;
    height: 92px;
  }

  .forum-speaker__name {
    font-size: 19px;
  }

  .forum-speaker__role {
    font-size: 14px;
    line-height: 1.7;
  }

  .forum-speaker__bio,
  .forum-speaker__report {
    margin-top: 20px;
  }

  .forum-speaker__bio p,
  .forum-speaker__report p {
    font-size: 15px;
    line-height: 1.9;
  }

  .forum-detail__status {
    margin-top: 20px;
    padding: 18px;
  }
}

@media (max-width: 390px) {
  .forum-detail__body {
    padding-right: 16px;
    padding-left: 16px;
  }

  .forum-speaker__identity {
    grid-template-columns: 82px minmax(0, 1fr);
    gap: 14px;
  }

  .forum-speaker__portrait {
    width: 82px;
    height: 82px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .forum-filters button,
  .forum-nav-group__items button {
    transition: none;
  }
}