/* 栏目列表页样式入口：用于 news-list.html 的列表、侧栏和分页维护。 */

/* ===== 栏目列表页布局、侧栏与分页 ===== */
body.home-channel-page {
  background:
    radial-gradient(circle at top, rgba(0, 104, 183, 0.1), transparent 28%),
    linear-gradient(180deg, #f7fbff 0%, #edf5fb 100%);
}

.channel-page-main {
  position: relative;
  padding-top: 104px;
}

.channel-page-hero {
  --channel-hero-image: none;
  position: relative;
  min-height: 375px;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(0, 40, 74, 0.82), rgba(0, 63, 115, 0.48)),
    linear-gradient(180deg, rgba(3, 22, 36, 0.08), rgba(3, 22, 36, 0.55)),
    var(--channel-hero-image) center / cover no-repeat;
}

.channel-page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 132px 132px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.58), transparent 82%);
  pointer-events: none;
}

.channel-page-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 120px;
  background: linear-gradient(180deg, rgba(10, 32, 53, 0), rgba(10, 32, 53, 0.68));
  pointer-events: none;
}

.channel-page-hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 375px;
  padding-top: 4.5rem;
  padding-bottom: 3.25rem;
}

.channel-page-breadcrumb,
.channel-sidebar,
.channel-content {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

[data-channel-page].is-ready .channel-page-breadcrumb,
[data-channel-page].is-ready .channel-sidebar,
[data-channel-page].is-ready .channel-content {
  opacity: 1;
  transform: translateY(0);
}

[data-channel-page].is-ready .channel-sidebar {
  transition-delay: 0.18s;
}

[data-channel-page].is-ready .channel-content {
  transition-delay: 0.24s;
}

.channel-page-breadcrumb {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
}

.channel-page-shell {
  position: relative;
  z-index: 2;
  margin-top: -58px;
  padding-bottom: 96px;
}

.channel-page-layout {
  display: grid;
  grid-template-columns: minmax(236px, 280px) minmax(0, 1fr);
  gap: 1.75rem;
  align-items: start;
}

.channel-sidebar,
.channel-content {
  position: relative;
  background: rgba(255, 255, 255, 0.97);
  border: 1px solid rgba(0, 104, 183, 0.12);
  box-shadow: var(--shadow-soft);
}

.channel-sidebar {
  position: sticky;
  top: 126px;
  max-height: calc(100vh - 150px);
  overflow-x: hidden;
  overflow-y: auto;
}

.channel-sidebar::before,
.channel-content::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), rgba(0, 104, 183, 0.08));
}

.channel-sidebar-head {
  padding: 1.5rem 1.4rem 1.25rem;
  background:
    linear-gradient(180deg, rgba(238, 246, 253, 0.9), rgba(255, 255, 255, 0.92)),
    linear-gradient(135deg, rgba(0, 104, 183, 0.06), transparent 50%);
  border-bottom: 1px solid rgba(0, 104, 183, 0.08);
}

.channel-sidebar-head h2 {
  margin: 0;
  color: var(--color-primary-dark);
  font: 700 clamp(1.6rem, 2.2vw, 2rem) / 1.22 var(--font-title);
  letter-spacing: 0.08em;
}

.channel-sidebar-nav {
  margin: 0;
  padding: 0.75rem 0;
  list-style: none;
}

.channel-sidebar-group {
  padding: 0.3rem 0 0.45rem;
}

.channel-sidebar-group-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.8rem 1.4rem 0.45rem;
  color: var(--color-primary-dark);
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-align: left;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.channel-sidebar-group-title::after {
  content: "";
  width: 0.58rem;
  height: 0.58rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  opacity: 0.5;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.channel-sidebar-group.is-active .channel-sidebar-group-title {
  color: var(--color-primary-dark);
}

.channel-sidebar-group-toggle:hover,
.channel-sidebar-group-toggle:focus-visible {
  color: var(--color-primary);
}

.channel-sidebar-group-toggle:hover::after,
.channel-sidebar-group-toggle:focus-visible::after {
  opacity: 0.82;
}

.channel-sidebar-subnav {
  margin: 0;
  padding: 0.05rem 0 0.2rem;
  list-style: none;
  border-left: 1px solid rgba(0, 104, 183, 0.1);
  margin-left: 1.45rem;
}

.channel-sidebar-subnav a {
  padding: 0.8rem 1.4rem 0.8rem 1.1rem;
  font-size: 0.92rem;
  color: #4f6577;
}

.channel-sidebar-nav a {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.4rem;
  color: var(--color-primary-dark);
  font-size: 1rem;
  line-height: 1.6;
  transition: background-color 0.2s ease, color 0.2s ease, padding-left 0.2s ease;
}

.channel-sidebar-nav > li > a {
  font-size: 1.05rem;
  font-weight: 700;
}

.channel-sidebar-nav a::after {
  content: "";
  width: 0.52rem;
  height: 0.52rem;
  border-top: 2px solid currentColor;
  border-right: 2px solid currentColor;
  transform: rotate(45deg);
  opacity: 0.32;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.channel-sidebar-nav a:hover,
.channel-sidebar-nav a:focus-visible {
  padding-left: 1.6rem;
  color: var(--color-primary);
  background: rgba(0, 104, 183, 0.05);
}

.channel-sidebar-nav a:hover::after,
.channel-sidebar-nav a:focus-visible::after {
  opacity: 0.72;
  transform: translateX(2px) rotate(45deg);
}

.channel-sidebar-nav a.is-active {
  color: #fff;
  background: linear-gradient(90deg, var(--color-primary-deep), var(--color-primary));
}

.channel-sidebar-nav a.is-active::after {
  opacity: 0.92;
}

.channel-sidebar.is-compact .channel-sidebar-group:not(.is-open) .channel-sidebar-subnav {
  display: none;
}

.channel-sidebar.is-compact .channel-sidebar-group.is-open .channel-sidebar-group-title::after {
  transform: rotate(225deg);
}

.channel-content {
  padding: 1.65rem 1.8rem 1.8rem;
}

.channel-content-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid rgba(0, 104, 183, 0.12);
}

.channel-content-head h2 {
  margin: 0;
  color: var(--color-primary-dark);
  font: 700 clamp(1.6rem, 2.5vw, 2.2rem) / 1.2 var(--font-title);
}

.channel-content-breadcrumb {
  color: var(--color-muted);
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.channel-content-intro {
  margin: 1rem 0 0;
  color: #4f6577;
  line-height: 1.8;
}

.channel-content-breadcrumb a,
.channel-content-breadcrumb span {
  color: inherit;
}

.channel-article-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.channel-article-item {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 0.95rem;
  padding: 1rem 0;
  border-bottom: 1px solid rgba(0, 104, 183, 0.1);
}

.channel-article-item:last-child {
  border-bottom: 0;
}

.channel-article-time {
  display: inline-grid;
  justify-self: center;
  justify-items: center;
  align-self: center;
  min-width: 76px;
  padding: 0.42rem 0.62rem;
  color: var(--color-primary);
  font: 700 0.78rem/1.2 var(--font-title);
  letter-spacing: 0.04em;
  background: linear-gradient(180deg, rgba(0, 104, 183, 0.08), rgba(0, 104, 183, 0.03));
}

.channel-article-day,
.channel-article-yearmonth {
  display: block;
  line-height: 1.15;
}

.channel-article-day {
  font-size: 0.98rem;
  font-weight: 800;
}

.channel-article-yearmonth {
  width: 100%;
  margin-top: 0.18rem;
  padding-top: 0.18rem;
  border-top: 1px dashed rgba(0, 104, 183, 0.7);
  text-align: center;
  font-size: 0.72rem;
}

.channel-article-body {
  min-width: 0;
}

.channel-article-body h3 {
  margin: 0;
  color: #000;
  font: 700 1.08rem/1.42 var(--font-title);
}

.channel-article-title {
  color: #000;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

.channel-article-title:hover,
.channel-article-title:focus-visible {
  color: #000;
  text-decoration: underline;
  text-decoration-color: rgba(0, 0, 0, 0.35);
  text-underline-offset: 0.18em;
}

.channel-article-summary {
  margin: 0.4rem 0 0;
  color: #000;
  line-height: 1.72;
}

.channel-download-search {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) auto;
  gap: 0.85rem 1rem;
  align-items: center;
  margin: 1.2rem 0 1.35rem;
  padding: 1rem 1.05rem;
  border: 1px solid rgba(0, 104, 183, 0.12);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(247, 251, 255, 0.98), rgba(255, 255, 255, 0.98));
}

.channel-download-search-field {
  display: grid;
  gap: 0.45rem;
  min-width: 0;
}

.channel-download-search-label {
  color: var(--color-primary-dark);
  font-weight: 700;
}

.channel-download-search-input {
  width: 100%;
  height: 44px;
  padding: 0 0.95rem;
  color: var(--color-primary-dark);
  border: 1px solid rgba(0, 104, 183, 0.18);
  border-radius: 8px;
  background: #fff;
}

.channel-download-search-input:focus {
  outline: 2px solid rgba(0, 104, 183, 0.18);
  outline-offset: 2px;
}

.channel-download-category-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.48rem;
}

.channel-download-category-tag {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0.2rem 0.72rem;
  color: var(--color-primary);
  font-size: 0.9rem;
  font-weight: 700;
  border: 1px solid rgba(0, 104, 183, 0.16);
  border-radius: 999px;
  background: rgba(0, 104, 183, 0.06);
}

.channel-download-search-meta {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--color-muted);
  font-size: 0.92rem;
}

.channel-download-panel {
  display: grid;
  gap: 1.35rem;
  margin: 1.35rem 0 0;
  padding: 0;
  list-style: none;
}

.channel-download-group {
  min-width: 0;
}

.channel-download-group-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.78rem;
  padding-bottom: 0.68rem;
  border-bottom: 1px solid rgba(0, 104, 183, 0.12);
}

.channel-download-group-head h3 {
  margin: 0;
  color: var(--color-primary-dark);
  font: 700 1.12rem/1.35 var(--font-title);
}

.channel-download-count {
  color: var(--color-muted);
  font-size: 0.92rem;
}

.channel-download-items {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.channel-download-item {
  min-width: 0;
}

.channel-download-card {
  display: grid;
  grid-template-rows: auto minmax(92px, 1fr);
  height: 100%;
  min-height: 216px;
  overflow: hidden;
  color: var(--color-primary-dark);
  border: 1px solid rgba(0, 104, 183, 0.12);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 16px 30px rgba(0, 54, 95, 0.07);
  transition: transform 0.24s ease, border-color 0.24s ease, box-shadow 0.24s ease;
}

.channel-download-card:hover,
.channel-download-card:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(0, 104, 183, 0.28);
  box-shadow: 0 20px 34px rgba(0, 54, 95, 0.12);
}

.channel-download-media {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, rgba(0, 104, 183, 0.1), rgba(0, 104, 183, 0.02)),
    #f5faff;
}

.channel-download-media img {
  width: 72px;
  height: 72px;
  object-fit: contain;
  filter: drop-shadow(0 10px 16px rgba(0, 54, 95, 0.12));
}

.channel-download-body {
  display: grid;
  align-content: start;
  gap: 0.62rem;
  min-width: 0;
  padding: 1rem 1.05rem 1.08rem;
}

.channel-download-name {
  display: block;
  min-width: 0;
  color: var(--color-primary-dark);
  font: 700 1rem/1.5 var(--font-title);
  overflow-wrap: anywhere;
}

.channel-download-name.is-shortened {
  display: flex;
  align-items: flex-end;
}

.channel-download-name-main {
  display: -webkit-box;
  min-width: 0;
  overflow: hidden;
  overflow-wrap: anywhere;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.channel-download-name-ext {
  flex: 0 0 auto;
  white-space: nowrap;
}

.channel-download-size {
  color: #59738b;
  font-size: 0.92rem;
}

.channel-empty {
  padding: 3rem 1rem 2rem;
  color: var(--color-muted);
  text-align: center;
}

.channel-pagination {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(0, 104, 183, 0.12);
}

.channel-page-link,
.channel-page-number,
.channel-page-jump-form button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  height: 44px;
  padding: 0 1rem;
  color: var(--color-primary-dark);
  border: 1px solid rgba(0, 104, 183, 0.14);
  background: #fff;
  transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.channel-page-link:hover,
.channel-page-link:focus-visible,
.channel-page-number:hover,
.channel-page-number:focus-visible,
.channel-page-jump-form button:hover,
.channel-page-jump-form button:focus-visible {
  color: var(--color-primary);
  border-color: rgba(0, 104, 183, 0.26);
  background: rgba(0, 104, 183, 0.04);
  transform: translateY(-1px);
}

.channel-page-link.is-disabled {
  color: #9bb3c7;
  pointer-events: none;
  background: #f8fbfe;
}

.channel-page-numbers {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
}

.channel-page-number.is-active {
  color: #fff;
  border-color: var(--color-primary);
  background: linear-gradient(180deg, var(--color-primary), var(--color-primary-deep));
}

.channel-page-jump {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
  grid-column: 1 / -1;
}

.channel-page-jump-meta {
  color: var(--color-muted);
  font-size: 0.95rem;
}

.channel-page-jump-form {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-muted);
  font-size: 0.94rem;
}

.channel-page-jump-form input {
  width: 86px;
  height: 44px;
  padding: 0 0.85rem;
  color: var(--color-primary-dark);
  border: 1px solid rgba(0, 104, 183, 0.18);
  background: #fff;
}

.channel-page-jump-form input:focus {
  outline: 2px solid rgba(0, 104, 183, 0.18);
  outline-offset: 2px;
}

.channel-page-jump-form button {
  font-weight: 600;
}

@media (max-width: 991.98px) {
  .channel-page-layout {
    grid-template-columns: 1fr;
  }

  .channel-sidebar {
    position: static;
  }

  .channel-download-search {
    grid-template-columns: 1fr;
  }

  .channel-download-category-list {
    justify-content: flex-start;
  }

  .channel-download-items {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 767.98px) {
  .channel-page-main {
    padding-top: 92px;
  }

  .channel-page-hero,
  .channel-page-hero-inner {
    min-height: 320px;
  }

  .channel-page-hero-inner {
    padding-bottom: 2.4rem;
  }

  .channel-page-title {
    max-width: none;
  }

  .channel-page-shell {
    margin-top: -38px;
    padding-bottom: 76px;
  }

  .channel-content {
    padding: 1.35rem 1.15rem 1.45rem;
  }

  .channel-content-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .channel-article-item {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }

  .channel-pagination {
    grid-template-columns: 1fr 1fr;
  }

  .channel-page-link {
    width: 100%;
  }

  .channel-page-numbers {
    grid-column: 1 / -1;
    order: 3;
  }

  .channel-page-jump {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.75rem;
  }
}

@media (max-width: 575.98px) {
  .channel-page-breadcrumb {
    font-size: 0.88rem;
    letter-spacing: 0.05em;
  }

  .channel-content-breadcrumb {
    white-space: normal;
  }

  .channel-sidebar-head {
    padding: 1.2rem 1rem 1rem;
  }

  .channel-sidebar-nav a {
    padding: 0.9rem 1rem;
  }

  .channel-page-jump-form {
    flex-wrap: wrap;
  }

  .channel-page-jump-form input,
  .channel-page-jump-form button {
    flex: 1 1 auto;
  }

  .channel-download-items {
    grid-template-columns: 1fr;
  }
}