:root {
  --bg: #f6f8fc;
  --panel: #ffffff;
  --primary: #173b6d;
  --blue: #2f80ed;
  --orange: #ff9f1c;
  --text: #162033;
  --muted: #6b7280;
  --border: #e5eaf2;
  --soft-blue: #eef5ff;
  --shadow: 0 14px 36px rgba(22, 32, 51, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
}

.page-shell {
  max-width: 1680px;
  margin: 0 auto;
  padding: 24px 28px 40px;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.topbar {
  z-index: 20;
  background: transparent;
}

.topbar__inner,
.dashboard {
  width: 100%;
  margin: 0 auto;
}

.topbar__inner {
  padding: 0;
}

.title-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-start;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  color: var(--primary);
  font-size: 30px;
  line-height: 1.2;
}

.title-row p,
.year-head p,
.modal__header p {
  margin-top: 8px;
  color: var(--muted);
}

.stats-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.stats-pill {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  min-height: 38px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 8px 18px rgba(23, 59, 109, 0.04);
}

.stats-pill strong {
  color: var(--primary);
  font-size: 18px;
}

.stats-pill em {
  color: var(--muted);
  font-size: 13px;
  font-style: normal;
}

.filter-panel {
  margin-top: 18px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 10px 30px rgba(23, 59, 109, 0.06);
}

.search-row,
.filter-line {
  display: flex;
  gap: 10px;
  align-items: center;
}

.search-row input {
  flex: 1;
  height: 42px;
  min-width: 280px;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0 14px;
  color: var(--text);
  background: #fff;
  outline: none;
}

.search-row input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(47, 128, 237, 0.12);
}

.filter-line {
  margin-top: 14px;
  flex-wrap: wrap;
}

.filter-label {
  width: 42px;
  font-weight: 700;
  color: var(--primary);
}

.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip,
.primary-button,
.ghost-button,
.select-control,
.icon-button {
  height: 34px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
}

.chip {
  padding: 0 12px;
  color: var(--primary);
}

.chip.is-active {
  border-color: var(--blue);
  background: var(--soft-blue);
  color: var(--primary);
  font-weight: 700;
}

.primary-button,
.ghost-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 14px;
  text-decoration: none;
  white-space: nowrap;
}

.primary-button {
  border-color: var(--blue);
  background: var(--blue);
  color: #fff;
  font-weight: 700;
}

.ghost-button {
  color: var(--primary);
  background: #fff;
}

.select-control {
  min-width: 118px;
  padding: 0 10px;
}

.province-select {
  width: min(280px, 100%);
  height: 38px;
  color: var(--primary);
  font-weight: 700;
  background: #fff;
}

.year-select {
  width: 120px;
  height: 38px;
  color: var(--primary);
  font-weight: 800;
  background: #fff;
}

.filter-summary {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid #eef2f7;
  color: var(--primary);
  font-weight: 700;
}

.filter-summary::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 159, 28, 0.14);
}

.dashboard {
  padding: 22px 0 24px;
}

.year-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 20px;
}

.year-head h2 {
  color: var(--primary);
  font-size: 24px;
}

.board-grid {
  display: grid;
  grid-template-columns: 3fr 4fr 2fr;
  gap: 16px;
  align-items: start;
}

.board-column {
  display: grid;
  gap: 16px;
}

.board-column--center {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
}

.board-column--center > div:nth-child(3) {
  grid-column: 1 / -1;
}

.section-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 10px 24px rgba(23, 59, 109, 0.05);
  padding: 14px;
}

.section-card__head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  min-height: 38px;
  margin-bottom: 12px;
}

.section-title {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: baseline;
  color: var(--primary);
  font-size: 18px;
  font-weight: 800;
}

.section-title span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.section-actions {
  display: flex;
  gap: 6px;
  align-items: center;
  white-space: nowrap;
}

.section-hint {
  margin: -2px 0 10px;
  padding: 8px 10px;
  border-radius: 8px;
  background: #fff7e8;
  color: #8a570c;
  font-size: 12px;
  line-height: 1.5;
}

.page-indicator {
  color: var(--muted);
  font-size: 13px;
  min-width: 42px;
  text-align: center;
}

.mini-button {
  width: 30px;
  height: 30px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  color: var(--primary);
}

.mini-button:disabled {
  opacity: 0.42;
  cursor: not-allowed;
}

.view-all-button {
  height: 30px;
  padding: 0 9px;
  border: 1px solid #cfe1f7;
  border-radius: 10px;
  background: var(--soft-blue);
  color: var(--primary);
  font-weight: 700;
}

.card-grid {
  display: grid;
  gap: 10px;
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.material-card {
  position: relative;
  overflow: hidden;
  min-width: 0;
  border: 1px solid #e8eef7;
  border-radius: 12px;
  background: #fff;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.material-card:hover {
  transform: translateY(-2px);
  border-color: #cfe1f7;
  box-shadow: 0 10px 22px rgba(23, 59, 109, 0.12);
}

.thumb-frame {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  aspect-ratio: 4 / 5;
  height: 168px;
  overflow: hidden;
  background: #f3f6fa;
}

.thumb-frame img {
  width: 100%;
  height: 100%;
  min-width: 100%;
  min-height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.card-footer {
  display: grid;
  grid-template-columns: 1fr 30px;
  gap: 8px;
  align-items: center;
  min-height: 48px;
  padding: 8px 9px 8px 10px;
}

.card-title {
  overflow: hidden;
  color: #17233c;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.copy-button {
  position: relative;
  width: 28px;
  height: 28px;
  border: 1px solid #b9d7fb;
  border-radius: 8px;
  background: var(--soft-blue);
  transition: background 160ms ease, border-color 160ms ease;
}

.copy-button:hover {
  border-color: #8bbcf7;
  background: #dbeeff;
}

.copy-button::before,
.copy-button::after {
  content: "";
  position: absolute;
  width: 11px;
  height: 13px;
  border: 2px solid var(--blue);
  border-radius: 3px;
}

.copy-button::before {
  top: 8px;
  left: 7px;
  opacity: 0.65;
}

.copy-button::after {
  top: 5px;
  left: 11px;
  background: var(--soft-blue);
}

.empty-state {
  display: grid;
  place-items: center;
  min-height: 220px;
  text-align: center;
  color: var(--muted);
  border: 1px dashed #cbd8e8;
  border-radius: 8px;
  background: #f8fbff;
}

.empty-state strong {
  display: block;
  margin-bottom: 8px;
  color: var(--primary);
}

.modal,
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 50;
}

.modal__overlay,
.lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 18, 35, 0.78);
}

.modal__panel {
  position: relative;
  display: flex;
  flex-direction: column;
  width: min(1280px, calc(100vw - 48px));
  max-height: 86vh;
  margin: 28px auto;
  padding: 18px;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
}

.modal__header,
.modal__footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.modal__header {
  position: sticky;
  top: 0;
  z-index: 2;
  padding-bottom: 12px;
  background: #fff;
}

.icon-button {
  width: 36px;
  font-size: 24px;
  line-height: 1;
}

.modal-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  flex: 1 1 auto;
  min-height: 0;
  align-content: start;
  overflow: auto;
  padding: 16px 2px;
}

.modal-grid .material-card {
  display: flex;
  flex-direction: column;
  min-height: 202px;
}

.modal-grid .thumb-frame {
  flex: 0 0 148px;
  height: 148px;
}

.modal-grid .card-footer {
  flex: 0 0 auto;
  min-height: 52px;
  background: #fff;
}

.modal__footer {
  justify-content: center;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

.modal-page-indicator {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 72px;
  height: 34px;
  color: var(--muted);
  font-weight: 700;
}

.lightbox {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) 72px;
  align-items: center;
}

.lightbox[hidden],
.modal[hidden] {
  display: none;
}

.lightbox__content {
  position: relative;
  z-index: 2;
  display: grid;
  justify-items: center;
  gap: 14px;
  max-height: calc(100vh - 40px);
  margin: 0;
}

.lightbox__content img {
  max-width: 86vw;
  max-height: 82vh;
  object-fit: contain;
  border-radius: 12px;
  background: #eef2f7;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.lightbox__caption {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  width: min(1000px, 86vw);
  padding: 14px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.96);
}

.lightbox__meta {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.lightbox__meta strong {
  color: var(--primary);
}

.lightbox__meta span {
  color: var(--muted);
  font-size: 13px;
  overflow-wrap: anywhere;
}

.lightbox__actions {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.lightbox__close,
.lightbox__nav {
  position: relative;
  z-index: 3;
  border: 1px solid rgba(255, 255, 255, 0.34);
  background: rgba(255, 255, 255, 0.13);
  color: #fff;
}

.lightbox__close {
  position: absolute;
  top: 22px;
  right: 24px;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  font-size: 28px;
}

.lightbox__nav {
  width: 48px;
  height: 72px;
  margin: auto;
  border-radius: 8px;
  font-size: 42px;
}

.toast {
  position: fixed;
  top: 22px;
  right: 22px;
  z-index: 80;
  transform: translateY(-16px);
  opacity: 0;
  pointer-events: none;
  padding: 12px 16px;
  border-radius: 8px;
  background: #10233f;
  color: #fff;
  box-shadow: 0 16px 36px rgba(16, 35, 63, 0.24);
  transition: opacity 160ms ease, transform 160ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1380px) {
  .board-grid {
    grid-template-columns: 1fr 1fr;
  }

  .board-column--right {
    grid-column: 1 / -1;
  }

  .board-column--center {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .modal-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .topbar__inner,
  .dashboard {
    width: 100%;
  }

  .page-shell {
    padding: 16px 12px 28px;
  }

  .title-row,
  .search-row,
  .lightbox__caption {
    flex-direction: column;
    align-items: stretch;
  }

  .province-select,
  .year-select,
  .search-row input {
    width: 100%;
    min-width: 0;
  }

  .board-grid,
  .board-column--center,
  .modal-grid {
    grid-template-columns: 1fr;
  }

  .board-column--center > div:nth-child(3) {
    grid-column: auto;
  }

.grid-4,
  .grid-3,
  .grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .thumb-frame {
    height: 156px;
  }

  .lightbox {
    grid-template-columns: 44px minmax(0, 1fr) 44px;
  }

  .lightbox__content img,
  .lightbox__caption {
    width: calc(100vw - 96px);
    max-width: calc(100vw - 96px);
  }

  .lightbox__actions {
    justify-content: flex-start;
  }
}

/* Advanced visual refresh: branded internal materials workbench */
:root {
  --bg: #f6f8fc;
  --panel: #ffffff;
  --primary: #163b6d;
  --primary-deep: #0f2d55;
  --blue: #2f80ed;
  --blue-soft: #eef5ff;
  --orange: #ff9f1c;
  --orange-soft: #fff7eb;
  --text: #162033;
  --muted: #6b7280;
  --border: #e4eaf3;
  --border-strong: #d5e0ef;
  --shadow-xs: 0 6px 16px rgba(22, 32, 51, 0.06);
  --shadow-sm: 0 14px 36px rgba(22, 32, 51, 0.08);
  --shadow-md: 0 22px 56px rgba(22, 32, 51, 0.12);
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --ease: 180ms ease;
}

body {
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(47, 128, 237, 0.08), rgba(255, 159, 28, 0.04) 36%, transparent 64%),
    repeating-linear-gradient(0deg, rgba(22, 59, 109, 0.035) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(90deg, rgba(22, 59, 109, 0.028) 0 1px, transparent 1px 40px),
    var(--bg);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(120deg, transparent 0 18%, rgba(255, 255, 255, 0.58) 18% 18.3%, transparent 18.3% 100%),
    linear-gradient(150deg, transparent 0 62%, rgba(47, 128, 237, 0.055) 62% 62.4%, transparent 62.4% 100%);
  opacity: 0.9;
}

.page-shell {
  position: relative;
  max-width: 1720px;
  padding: 30px 32px 48px;
}

.topbar {
  position: relative;
}

.topbar__inner {
  position: relative;
  overflow: hidden;
  padding: 26px;
  border: 1px solid rgba(213, 224, 239, 0.86);
  border-radius: 24px;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.96), rgba(238, 245, 255, 0.92) 58%, rgba(255, 247, 235, 0.72)),
    #fff;
  box-shadow: var(--shadow-sm);
}

.topbar__inner::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: linear-gradient(90deg, var(--orange), rgba(47, 128, 237, 0.85), rgba(22, 59, 109, 0.2));
}

.topbar__inner::after {
  content: "";
  position: absolute;
  right: -80px;
  top: 36px;
  width: 460px;
  height: 120px;
  transform: rotate(-14deg);
  border: 1px solid rgba(47, 128, 237, 0.12);
  border-left: 0;
  border-right: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
  pointer-events: none;
}

.title-row {
  position: relative;
  z-index: 1;
  align-items: center;
}

.title-row h1 {
  letter-spacing: 0;
  color: var(--primary);
  font-size: 36px;
  font-weight: 900;
}

.title-row h1::before {
  content: "有道领世";
  display: inline-flex;
  align-items: center;
  height: 24px;
  margin-right: 10px;
  padding: 0 9px;
  vertical-align: 5px;
  border: 1px solid rgba(255, 159, 28, 0.3);
  border-radius: 999px;
  background: var(--orange-soft);
  color: #9a5d00;
  font-size: 12px;
  font-weight: 800;
}

.title-row p {
  max-width: 720px;
  color: #5f6f86;
  font-size: 15px;
  line-height: 1.7;
}

.stats-pills {
  gap: 12px;
}

.stats-pill {
  min-width: 118px;
  min-height: 62px;
  display: grid;
  align-content: center;
  gap: 2px;
  padding: 12px 16px;
  border-color: rgba(213, 224, 239, 0.95);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow-xs);
  backdrop-filter: blur(10px);
}

.stats-pill strong {
  font-size: 24px;
  line-height: 1;
  color: var(--primary);
}

.stats-pill em {
  color: #6c7b90;
  font-size: 12px;
  font-weight: 700;
}

.filter-panel {
  position: relative;
  z-index: 1;
  margin-top: 22px;
  padding: 18px 20px 18px;
  border-color: rgba(213, 224, 239, 0.92);
  border-radius: 20px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(250, 252, 255, 0.98)),
    #fff;
  box-shadow: 0 18px 42px rgba(22, 59, 109, 0.08);
}

.filter-panel::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 0;
  width: 96px;
  height: 3px;
  border-radius: 0 0 999px 999px;
  background: linear-gradient(90deg, var(--blue), var(--orange));
}

.filter-line {
  gap: 12px;
}

.filter-label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  width: auto;
  min-width: 42px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 900;
}

.filter-label::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 159, 28, 0.12);
}

.select-control,
.chip,
.ghost-button,
.primary-button,
.mini-button,
.view-all-button,
.icon-button {
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease), background var(--ease), color var(--ease);
}

.select-control {
  border-color: var(--border);
  border-radius: 12px;
  background: linear-gradient(180deg, #fff, #f9fbff);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.select-control:focus,
.chip:focus-visible,
.ghost-button:focus-visible,
.primary-button:focus-visible,
.mini-button:focus-visible,
.view-all-button:focus-visible,
.icon-button:focus-visible {
  outline: none;
  border-color: rgba(47, 128, 237, 0.78);
  box-shadow: 0 0 0 4px rgba(47, 128, 237, 0.13);
}

.chip {
  height: 36px;
  border-radius: 999px;
  background: #fff;
  font-weight: 700;
}

.chip:hover {
  transform: translateY(-1px);
  border-color: #c5d8f2;
  background: #f8fbff;
}

.chip.is-active {
  border-color: rgba(47, 128, 237, 0.7);
  background: linear-gradient(180deg, #f4f9ff, #eaf3ff);
  box-shadow: inset 0 0 0 1px rgba(47, 128, 237, 0.08);
}

.ghost-button,
.primary-button {
  border-radius: 12px;
  font-weight: 800;
}

.ghost-button:hover {
  transform: translateY(-1px);
  border-color: #bfd4ef;
  background: #f7fbff;
  box-shadow: var(--shadow-xs);
}

.primary-button {
  background: linear-gradient(135deg, #2f80ed, #1f67d2);
  box-shadow: 0 10px 20px rgba(47, 128, 237, 0.2);
}

.primary-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(47, 128, 237, 0.26);
}

.filter-summary {
  min-height: 44px;
  margin-top: 16px;
  padding: 10px 14px;
  border: 1px solid rgba(213, 224, 239, 0.84);
  border-radius: 14px;
  background: linear-gradient(90deg, var(--blue-soft), rgba(255, 247, 235, 0.72));
  color: var(--primary);
  font-size: 14px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.dashboard {
  padding-top: 28px;
}

.year-head {
  margin-bottom: 22px;
  padding: 0 4px;
}

.year-head h2 {
  color: var(--primary);
  font-size: 27px;
  font-weight: 900;
}

.year-head p {
  color: #6a778a;
}

.board-grid {
  gap: 18px;
}

.board-column {
  gap: 18px;
}

.section-card {
  position: relative;
  overflow: hidden;
  padding: 0;
  border-color: rgba(213, 224, 239, 0.92);
  border-radius: 20px;
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
}

.section-card:hover {
  transform: translateY(-2px);
  border-color: #cddcf0;
  box-shadow: var(--shadow-md);
}

.section-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: var(--section-accent, linear-gradient(90deg, var(--blue), rgba(47, 128, 237, 0.08)));
}

.section-card[data-category="顶尖名校"] {
  --section-accent: linear-gradient(90deg, #ff9f1c, rgba(255, 159, 28, 0.12));
}

.section-card[data-category="超高分喜报"] {
  --section-accent: linear-gradient(90deg, #ff7a45, rgba(255, 122, 69, 0.12));
}

.section-card[data-category="单科高分"] {
  --section-accent: linear-gradient(90deg, #2f80ed, rgba(47, 128, 237, 0.12));
}

.section-card[data-category="高分学员"] {
  --section-accent: linear-gradient(90deg, #18a4b8, rgba(24, 164, 184, 0.12));
}

.section-card[data-category="提分学员"] {
  --section-accent: linear-gradient(90deg, #ff9f1c, #2f80ed);
  box-shadow: 0 22px 60px rgba(22, 59, 109, 0.14);
}

.section-card[data-category="押题学员反馈"] {
  --section-accent: linear-gradient(90deg, #6574f7, rgba(101, 116, 247, 0.12));
}

.section-card__head {
  min-height: 62px;
  margin: 0;
  padding: 18px 18px 14px;
  border-bottom: 1px solid rgba(228, 234, 243, 0.78);
  background: linear-gradient(180deg, #fbfdff, #fff);
  flex-wrap: wrap;
  align-items: flex-start;
  row-gap: 12px;
  column-gap: 16px;
}

.section-card__head > div:first-child {
  flex: 1 1 180px;
  min-width: 0;
}

.section-title {
  position: relative;
  gap: 10px;
  padding-left: 14px;
  color: var(--primary);
  font-size: 19px;
  font-weight: 900;
  flex-wrap: nowrap;
  align-items: center;
}

.section-title strong {
  white-space: nowrap;
  line-height: 1.18;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 5px;
  height: 20px;
  border-radius: 999px;
  background: var(--section-accent, var(--blue));
}

.section-card[data-category="提分学员"] .section-title {
  font-size: 21px;
}

.section-card[data-category="提分学员"] .section-title::after {
  content: "重点模块";
  height: 22px;
  display: inline-flex;
  align-items: center;
  padding: 0 8px;
  border-radius: 999px;
  background: var(--orange-soft);
  color: #9a5d00;
  font-size: 12px;
  font-weight: 900;
}

.section-title span {
  height: 22px;
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  padding: 0 8px;
  border-radius: 999px;
  background: #f3f7fc;
  color: #66758b;
  font-size: 12px;
}

.section-actions {
  flex: 0 0 auto;
  margin-left: auto;
  gap: 8px;
}

.mini-button {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background: #fff;
}

.mini-button:not(:disabled):hover {
  transform: translateY(-1px);
  border-color: #bad2f0;
  background: var(--blue-soft);
}

.view-all-button {
  height: 34px;
  padding: 0 13px;
  border-color: #c8dcf5;
  border-radius: 12px;
  background: linear-gradient(180deg, #f6faff, #eaf3ff);
  color: var(--primary);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.85);
}

.view-all-button:not(:disabled):hover {
  transform: translateY(-1px);
  border-color: #9fc4f2;
  box-shadow: 0 10px 18px rgba(47, 128, 237, 0.12);
}

.card-grid {
  gap: 12px;
  padding: 14px;
}

.section-hint {
  margin: 12px 14px 0;
  border: 1px solid rgba(255, 159, 28, 0.18);
  border-radius: 12px;
  background: linear-gradient(90deg, var(--orange-soft), #fff);
}

.material-card {
  border-color: rgba(220, 229, 240, 0.96);
  border-radius: 15px;
  background: linear-gradient(180deg, #fff, #fbfdff);
  box-shadow: 0 6px 16px rgba(22, 32, 51, 0.055);
}

.material-card:hover {
  transform: translateY(-4px);
  border-color: rgba(47, 128, 237, 0.34);
  box-shadow: 0 18px 34px rgba(22, 59, 109, 0.16);
}

.thumb-frame {
  position: relative;
  height: 174px;
  padding: 8px;
  background:
    linear-gradient(180deg, #f8fbff, #eef3f9),
    #f4f7fb;
}

.thumb-frame img {
  border-radius: 11px;
  transition: transform 220ms ease;
}

.material-card:hover .thumb-frame img {
  transform: scale(1.025);
}

.card-badges {
  position: absolute;
  left: 10px;
  right: 10px;
  top: 10px;
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
  pointer-events: none;
}

.card-badges span {
  max-width: 72px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  height: 20px;
  display: inline-flex;
  align-items: center;
  padding: 0 7px;
  border: 1px solid rgba(255, 255, 255, 0.78);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.86);
  color: var(--primary);
  font-size: 11px;
  font-weight: 900;
  box-shadow: 0 6px 14px rgba(22, 32, 51, 0.1);
  backdrop-filter: blur(8px);
}

.card-footer {
  grid-template-columns: minmax(0, 1fr) 34px;
  min-height: 66px;
  padding: 10px 10px 11px 12px;
  border-top: 1px solid rgba(228, 234, 243, 0.76);
  background: #fff;
}

.card-text {
  min-width: 0;
}

.card-title {
  color: #14213a;
  font-size: 13.5px;
  font-weight: 850;
  line-height: 1.38;
}

.card-meta {
  margin-top: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: #7a8798;
  font-size: 11.5px;
  font-weight: 650;
}

.copy-button {
  width: 32px;
  height: 32px;
  border-color: #bad7fb;
  border-radius: 11px;
  background: linear-gradient(180deg, #f7fbff, #e7f2ff);
}

.copy-button:hover {
  transform: translateY(-1px);
  border-color: #77acef;
  background: linear-gradient(180deg, #eaf4ff, #d8ebff);
  box-shadow: 0 8px 16px rgba(47, 128, 237, 0.18);
}

.copy-button::after {
  background: #edf6ff;
}

.empty-state {
  margin: 14px;
  min-height: 230px;
  border-color: #c9d9ec;
  border-radius: 16px;
  background:
    linear-gradient(135deg, rgba(238, 245, 255, 0.98), rgba(255, 247, 235, 0.7)),
    #f8fbff;
}

.empty-state div::before {
  content: "";
  display: block;
  width: 46px;
  height: 46px;
  margin: 0 auto 12px;
  border: 1px solid #c9dcf5;
  border-radius: 14px;
  background:
    linear-gradient(90deg, transparent 12px, rgba(47, 128, 237, 0.16) 12px 14px, transparent 14px),
    linear-gradient(180deg, #fff, #eef5ff);
  box-shadow: var(--shadow-xs);
}

.modal__overlay,
.lightbox__backdrop {
  background:
    linear-gradient(135deg, rgba(238, 245, 255, 0.92), rgba(248, 251, 255, 0.86)),
    rgba(246, 248, 252, 0.88);
  backdrop-filter: blur(8px);
}

.modal__panel {
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 24px;
  background: linear-gradient(180deg, #fff, #f8fbff);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.32);
}

.modal__header {
  margin: -18px -18px 0;
  padding: 18px 18px 14px;
  border-radius: 24px 24px 0 0;
  border-bottom: 1px solid rgba(228, 234, 243, 0.9);
  background: linear-gradient(120deg, #fff, #eef5ff);
}

.modal__header h3 {
  color: var(--primary);
  font-size: 22px;
}

.modal-grid {
  gap: 14px;
}

.icon-button {
  border-radius: 12px;
}

.icon-button:hover {
  transform: translateY(-1px);
  border-color: #bcd3ee;
  background: var(--blue-soft);
}

.lightbox__content img {
  border: 1px solid rgba(255, 255, 255, 0.86);
  border-radius: 16px;
  box-shadow: 0 24px 70px rgba(22, 59, 109, 0.22);
}

.lightbox__caption {
  border: 1px solid rgba(255, 255, 255, 0.76);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 18px 46px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(12px);
}

.lightbox__nav,
.lightbox__close {
  color: var(--primary);
  border-color: rgba(181, 204, 233, 0.92);
  background: rgba(255, 255, 255, 0.76);
  border-radius: 14px;
  backdrop-filter: blur(10px);
  transition: background var(--ease), transform var(--ease), border-color var(--ease);
}

.lightbox__nav:hover,
.lightbox__close:hover {
  transform: translateY(-1px);
  border-color: rgba(47, 128, 237, 0.42);
  background: rgba(255, 255, 255, 0.96);
}

.toast {
  border-radius: 12px;
  background: linear-gradient(135deg, #10233f, #163b6d);
  box-shadow: 0 18px 42px rgba(16, 35, 63, 0.28);
}

@media (max-width: 900px) {
  .page-shell {
    padding: 16px 12px 32px;
  }

  .topbar__inner {
    padding: 22px 16px;
    border-radius: 20px;
  }

  .title-row h1 {
    font-size: 28px;
  }

  .stats-pill {
    min-width: 0;
    flex: 1 1 110px;
  }

  .filter-panel {
    padding: 16px;
  }

  .section-card__head {
    flex-direction: column;
    align-items: flex-start;
  }

  .section-actions {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .card-grid {
    padding: 12px;
  }

  .card-footer {
    min-height: 70px;
  }
}