/* ==================================================================
   公开端（首页 / 资讯中心 / 讲师专区）
   ================================================================== */

/* 首页头部 */
.hero {
  padding: 34px 0 26px; border-bottom: 1px solid var(--line); margin-bottom: 28px;
}
.hero h1 { font-size: 26px; letter-spacing: 2px; margin-bottom: 10px; }
.hero .hero-line { height: 2px; width: 72px; background: var(--metal); margin: 14px 0; }
.hero p { color: var(--muted); font-size: 14px; margin: 0; }
.hero .date { color: var(--gold); font-size: 15px; letter-spacing: 1px; }

/* 今日双卡 */
.today-cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 20px;
}
.news-card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
}
.news-card .nc-head {
  display: flex; align-items: center; gap: 10px; padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}
.news-card .nc-head .cat { font-size: 15px; font-weight: 600; letter-spacing: 1px; }
.news-card.finance .nc-head .cat { color: var(--gold); }
.news-card.crypto  .nc-head .cat { color: var(--cyan); }
.news-card .nc-head .date { margin-left: auto; color: var(--faint); font-size: 13px; }

.nc-img {
  width: 100%; aspect-ratio: 1080 / 1350; background: #05070a; position: relative;
  display: flex; align-items: center; justify-content: center;
}
.nc-img img { width: 100%; height: 100%; object-fit: contain; }
.nc-body { padding: 16px 18px 18px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.nc-title { font-size: 17px; line-height: 1.5; margin: 0; }
.nc-summary { color: var(--muted); font-size: 13px; line-height: 1.8; margin: 0; }
.nc-srcs { display: flex; gap: 7px; flex-wrap: wrap; }
.nc-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: auto; }

/* 事件行 */
.ev-list { display: flex; flex-direction: column; }
.ev-item { display: flex; gap: 14px; padding: 13px 0; border-bottom: 1px solid var(--line-soft); }
.ev-item:last-child { border-bottom: 0; }
.ev-time { width: 60px; flex-shrink: 0; color: var(--gold); font-size: 14px; font-variant-numeric: tabular-nums; }
.ev-body { flex: 1; min-width: 0; }
.ev-title { font-size: 15px; line-height: 1.6; margin: 0 0 6px; }
.ev-meta { display: flex; gap: 7px; flex-wrap: wrap; align-items: center; }
.ev-srcs { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 8px; }

/* 讲师卡 */
.teacher-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 16px; }
.teacher-card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 18px; text-align: center; display: block; color: var(--text);
}
.teacher-card:hover { border-color: var(--gold); color: var(--text); }
.t-avatar {
  width: 78px; height: 78px; border-radius: 50%; margin: 0 auto 12px; overflow: hidden;
  background: #1a1f26; border: 2px solid rgba(200,169,106,.3);
}
.t-avatar img { width: 100%; height: 100%; object-fit: cover; }
.t-avatar.empty { position: relative; }
.t-avatar.empty::after {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 50% 38%, rgba(255,255,255,.10) 0 22%, transparent 23%),
    radial-gradient(ellipse at 50% 96%, rgba(255,255,255,.10) 0 40%, transparent 41%);
}
.t-name { font-size: 16px; font-weight: 600; margin: 0 0 4px; }
.t-role { color: var(--muted); font-size: 13px; margin: 0 0 8px; }
.t-tags { display: flex; gap: 5px; flex-wrap: wrap; justify-content: center; }
.t-time { color: var(--faint); font-size: 12px; margin-top: 10px; }

/* 讲师详情 */
.t-profile { display: flex; gap: 24px; flex-wrap: wrap; align-items: flex-start; }
.t-profile .t-avatar { width: 110px; height: 110px; margin: 0; flex-shrink: 0; }
.t-profile .info { flex: 1; min-width: 240px; }
.t-profile h1 { font-size: 24px; margin-bottom: 6px; }

/* 筛选条 */
.filter-bar {
  display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end;
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px; margin-bottom: 20px;
}
.filter-bar .field { margin: 0; }

/* 历史列表 */
.hist-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.hist-card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
}
.hist-card .hc-img { aspect-ratio: 1080 / 1350; background: #05070a; }
.hist-card .hc-img img { width: 100%; height: 100%; object-fit: contain; }
.hist-card .hc-body { padding: 12px 14px 14px; }
.hist-card .hc-t { font-size: 14px; line-height: 1.5; margin: 0 0 6px; }
.hist-card .hc-m { color: var(--faint); font-size: 12px; }

@media (max-width: 768px) {
  .hero { padding: 24px 0 20px; }
  .hero h1 { font-size: 21px; }
  .today-cards { grid-template-columns: 1fr; gap: 16px; }
  .teacher-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
  .hist-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
  .ev-time { width: 50px; font-size: 13px; }
}