/* R法学园 PC 端 — 与 APP 同色系 */
:root {
  --primary: #1A2332;
  --accent: #EA580C;
  --accent-soft: rgba(234, 88, 12, 0.1);
  --live: #E05252;
  --bg: #FFFFFF;
  --bg-page: #F4F5F7;
  --bg-subtle: #F9F9F9;
  --text-primary: #1A2332;
  --text-secondary: #5C6573;
  --text-muted: #94A0AE;
  --border: #ECEEF2;
  --radius: 10px;
  --radius-lg: 12px;
  --header-h: 64px;
  --container: 1200px;
  --shadow-sm: 0 1px 3px rgba(26, 35, 50, 0.06);
  --shadow-md: 0 4px 16px rgba(26, 35, 50, 0.08);
  --transition: 0.2s ease;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.pc-container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── 顶栏 ── */
.pc-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.pc-header__inner {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 100%;
  flex-wrap: nowrap;
  min-width: 0;
}

.pc-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.pc-logo__img {
  height: 36px;
  width: auto;
  border-radius: 4px;
}

.pc-nav {
  display: flex;
  align-items: center;
  gap: 0;
  flex-shrink: 0;
  white-space: nowrap;
}

.pc-nav__item {
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: color var(--transition), background var(--transition);
}

.pc-nav__item:hover {
  color: var(--primary);
  background: var(--bg-subtle);
}

.pc-nav__item.active {
  color: var(--accent);
  font-weight: 600;
}

.pc-search {
  flex: 1 1 auto;
  min-width: 140px;
  max-width: 260px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--bg-subtle);
  border: 1px solid transparent;
  border-radius: 24px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.pc-search:hover,
.pc-search:focus-within {
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.pc-search i {
  color: var(--text-muted);
  font-size: 14px;
}

.pc-search input {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  font-size: 14px;
  color: var(--text-primary);
}

.pc-search input::placeholder {
  color: var(--text-muted);
}

.pc-header__actions {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
  margin-left: auto;
}

.pc-header__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: color var(--transition), background var(--transition);
  position: relative;
  flex-shrink: 0;
}

.pc-header__btn:hover {
  color: var(--primary);
  background: var(--bg-subtle);
}

.pc-header__btn .badge-dot {
  position: absolute;
  top: 6px;
  right: 8px;
  width: 7px;
  height: 7px;
  background: var(--live);
  border-radius: 50%;
}

.pc-header__auth {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: 20px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
}

.pc-header__auth a {
  color: #fff;
  transition: opacity var(--transition);
}

.pc-header__auth a:hover {
  opacity: 0.85;
  color: #fff;
}

.pc-header__auth-sep {
  margin: 0 6px;
  opacity: 0.55;
  user-select: none;
}

/* ── 频道栏 ── */
.pc-channel-bar {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.pc-channel-bar__inner {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 0;
  overflow-x: auto;
}

.pc-channel-bar__inner::-webkit-scrollbar {
  height: 0;
}

.pc-channel {
  flex-shrink: 0;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 14px;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.pc-channel:hover {
  color: var(--primary);
  background: var(--bg-subtle);
}

.pc-channel.active {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

/* ── 主内容 ── */
.pc-main {
  padding: 24px 0 48px;
}

.pc-hero-row {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 20px;
  margin-bottom: 24px;
}

/* Banner */
.pc-hero {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  min-height: 360px;
}

.pc-hero .carousel,
.pc-hero .carousel-inner,
.pc-hero .carousel-item {
  height: 360px;
}

.pc-hero-slide {
  position: relative;
  display: block;
  height: 100%;
  color: #fff;
}

.pc-hero-slide__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.pc-hero-slide__bg--1 {
  background-image: linear-gradient(135deg, #1A2332 0%, #3D5A80 50%, #EA580C 100%);
}

.pc-hero-slide__bg--2 {
  background-image: linear-gradient(135deg, #2C1810 0%, #8B4513 50%, #E05252 100%);
}

.pc-hero-slide__bg--3 {
  background-image: linear-gradient(135deg, #1B2838 0%, #4A6741 60%, #7CB342 100%);
}

.pc-hero-slide__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0.1) 70%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 48px;
}

.pc-hero-slide__tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 4px;
  background: rgba(255,255,255,0.2);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
  width: fit-content;
}

.pc-hero-slide__title {
  margin: 0 0 12px;
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  max-width: 480px;
}

.pc-hero-slide__desc {
  margin: 0 0 24px;
  font-size: 16px;
  opacity: 0.9;
  max-width: 420px;
}

.pc-hero-slide__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--accent);
  color: #fff;
  border-radius: 24px;
  font-size: 15px;
  font-weight: 600;
  width: fit-content;
  transition: transform var(--transition);
}

.pc-hero-slide__cta:hover {
  transform: translateY(-2px);
  color: #fff;
}

.pc-hero .carousel-indicators {
  margin-bottom: 16px;
}

.pc-hero .carousel-indicators [data-bs-target] {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,0.4);
}

.pc-hero .carousel-indicators .active {
  background: #fff;
  width: 24px;
  border-radius: 4px;
}

/* 右侧快捷卡片 */
.pc-side-cards {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pc-side-card {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}

.pc-side-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.pc-side-card__icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.pc-side-card__icon--live { background: rgba(224, 82, 82, 0.12); color: var(--live); }
.pc-side-card__icon--promo { background: var(--accent-soft); color: var(--accent); }
.pc-side-card__icon--school { background: rgba(26, 35, 50, 0.08); color: var(--primary); }

.pc-side-card__body h4 {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 600;
}

.pc-side-card__body p {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
}

/* 公告 */
.pc-notice {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  background: var(--bg);
  border-radius: var(--radius);
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.pc-notice__icon {
  color: var(--accent);
  font-size: 16px;
}

.pc-notice__text {
  flex: 1;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  color: var(--text-secondary);
  font-size: 14px;
}

.pc-notice__text:hover {
  color: var(--accent);
}

.pc-notice__more {
  color: var(--text-muted);
  font-size: 13px;
  flex-shrink: 0;
}

.pc-notice__more:hover {
  color: var(--accent);
}

/* 快捷入口 */
.pc-quick-grid {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 8px;
  padding: 24px 16px;
  background: var(--bg);
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.pc-quick-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 12px 8px;
  border-radius: var(--radius);
  transition: background var(--transition);
}

.pc-quick-item:hover {
  background: var(--bg-subtle);
}

.pc-quick-item__icon {
  width: 48px;
  height: 48px;
}

.pc-quick-item__icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.pc-quick-item__label {
  font-size: 13px;
  color: var(--text-secondary);
  text-align: center;
}

/* 区块通用 */
.pc-block {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.pc-block-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.pc-block-title {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
}

.pc-block-more {
  font-size: 14px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.pc-block-more:hover {
  color: var(--accent);
}

/* 直播卡片 */
.pc-live-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.pc-live-card {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: box-shadow var(--transition), transform var(--transition);
}

.pc-live-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.pc-live-card__cover {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.pc-live-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pc-live-card__cover img,
.pc-live-card__placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pc-live-card__placeholder {
  background: linear-gradient(135deg, #2D3E54, #1A2332);
}

.pc-live-card__placeholder--2 {
  background: linear-gradient(135deg, #5C4033, #8B6914);
}

.pc-live-card__placeholder--3 {
  background: linear-gradient(135deg, #3D2C4A, #6B4C7A);
}

.pc-live-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 3px 10px;
  background: var(--live);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

.pc-live-card__body {
  padding: 14px 16px;
}

.pc-live-card__title {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.pc-live-card__meta {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
}

/* 课程筛选 */
.pc-filter-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}

.pc-filter-tab {
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 14px;
  color: var(--text-secondary);
  background: var(--bg-subtle);
  transition: all var(--transition);
}

.pc-filter-tab:hover {
  color: var(--primary);
}

.pc-filter-tab.active {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

/* 课程网格 */
.pc-course-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.pc-course-card {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: box-shadow var(--transition), transform var(--transition);
}

.pc-course-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.pc-course-card__cover {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.pc-course-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pc-course-card__cover img,
.pc-course-card__placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pc-course-card__placeholder--1 { background: linear-gradient(135deg, #1A2332, #4A6FA5); }
.pc-course-card__placeholder--2 { background: linear-gradient(135deg, #2E4A3F, #5D8A66); }
.pc-course-card__placeholder--3 { background: linear-gradient(135deg, #4A3728, #8B6914); }
.pc-course-card__placeholder--4 { background: linear-gradient(135deg, #3D2C4A, #7B5EA7); }

.pc-course-card__duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  padding: 2px 8px;
  background: rgba(0,0,0,0.65);
  color: #fff;
  font-size: 12px;
  border-radius: 4px;
}

.pc-course-card__body {
  padding: 14px 16px;
}

.pc-course-card__title {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.pc-course-card__desc {
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.pc-course-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.pc-course-card__price {
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
}

.pc-course-card__price del {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-muted);
  margin-left: 4px;
}

.pc-course-card__count {
  font-size: 12px;
  color: var(--text-muted);
}

/* 双栏：活动 + 推广 */
.pc-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

/* 推广条 */
.pc-promo-banner {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 28px 32px;
  background-color: var(--primary);
  background-size: cover;
  background-position: center;
  border-radius: var(--radius-lg);
  color: #fff;
  transition: transform var(--transition);
  position: relative;
  overflow: hidden;
}

.pc-promo-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26, 35, 50, 0.88) 0%, rgba(45, 62, 84, 0.75) 100%);
}

.pc-promo-banner > * {
  position: relative;
  z-index: 1;
}

.pc-promo-banner:hover {
  transform: translateY(-2px);
  color: #fff;
}

.pc-promo-banner__icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(234, 88, 12, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: var(--accent);
  flex-shrink: 0;
}

.pc-promo-banner__text h4 {
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 700;
}

.pc-promo-banner__text p {
  margin: 0;
  font-size: 14px;
  opacity: 0.85;
}

.pc-promo-banner__arrow {
  margin-left: auto;
  font-size: 18px;
  opacity: 0.6;
}

/* 活动卡片 */
.pc-event-card {
  display: flex;
  gap: 16px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: box-shadow var(--transition);
}

.pc-event-card:hover {
  box-shadow: var(--shadow-md);
}

.pc-event-card__img {
  width: 140px;
  height: 100px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
}

.pc-event-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pc-event-card__placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #4A6741, #7CB342);
}

.pc-event-card__body {
  flex: 1;
  min-width: 0;
}

.pc-event-card__tag {
  display: inline-block;
  padding: 2px 8px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  border-radius: 4px;
  margin-bottom: 8px;
}

.pc-event-card__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
}

.pc-event-card__meta {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
}

/* 讲师 */
.pc-teacher-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}

.pc-teacher-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 20px 12px;
  border-radius: var(--radius);
  transition: background var(--transition);
}

.pc-teacher-card:hover {
  background: var(--bg-subtle);
}

.pc-teacher-card__avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--bg-subtle);
}

.pc-teacher-card__name {
  font-size: 14px;
  font-weight: 600;
  text-align: center;
}

.pc-teacher-card__title {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
}

/* 页脚 */
.pc-footer {
  background: var(--primary);
  color: rgba(255,255,255,0.75);
  padding: 48px 0 24px;
}

.pc-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.pc-footer__brand {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.pc-footer__desc {
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
}

.pc-footer__col h5 {
  color: #fff;
  font-size: 15px;
  margin: 0 0 16px;
}

.pc-footer__links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.pc-footer__links li {
  margin-bottom: 10px;
}

.pc-footer__links a {
  font-size: 14px;
  transition: color var(--transition);
}

.pc-footer__links a:hover {
  color: #fff;
}

.pc-footer__bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 13px;
}

/* 响应式 */
@media (max-width: 1280px) {
  .pc-header__btn-text {
    display: none;
  }

  .pc-nav__item {
    padding: 6px 8px;
    font-size: 13px;
  }

  .pc-search {
    max-width: 200px;
  }
}

@media (max-width: 1024px) {
  .pc-hero-row {
    grid-template-columns: 1fr;
  }

  .pc-side-cards {
    flex-direction: row;
  }

  .pc-quick-grid {
    grid-template-columns: repeat(5, 1fr);
  }

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

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

  .pc-footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .pc-nav {
    display: none;
  }

  .pc-live-grid,
  .pc-course-grid,
  .pc-two-col {
    grid-template-columns: 1fr;
  }

  .pc-quick-grid {
    grid-template-columns: repeat(5, 1fr);
  }

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