/* =========================================
   智库频道样式 think-tank.css — 深色科技风
   ========================================= */
.tt-hero {
  background: linear-gradient(135deg, #0d3d21 0%, #1a6b3a 50%, #0d3d21 100%);
  padding: 60px 0; position: relative; overflow: hidden; margin-bottom: 28px;
}
.tt-hero::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(45,155,90,0.15) 0%, transparent 60%);
}
.tt-hero .container { display: flex; align-items: center; justify-content: space-between; position: relative; z-index: 1; }
.tt-hero-content { flex: 1; }
.tt-badge {
  display: inline-block; background: rgba(255,255,255,0.15); color: #fff;
  padding: 4px 14px; border-radius: 20px; font-size: 12px; margin-bottom: 16px;
  border: 1px solid rgba(255,255,255,0.2);
}
.tt-hero h1 { font-size: 36px; font-weight: 900; color: #fff; margin-bottom: 12px; }
.tt-hero p { font-size: 15px; color: rgba(255,255,255,0.7); line-height: 1.7; margin-bottom: 24px; }
.tt-stats { display: flex; gap: 32px; }
.tt-stat { text-align: center; }
.tt-stat strong { display: block; font-size: 26px; color: #2d9b5a; font-weight: 800; }
.tt-stat span { font-size: 12px; color: rgba(255,255,255,0.55); }
.tt-hero-visual { flex-shrink: 0; }

.research-nav {
  display: flex; justify-content: space-between; align-items: center;
  background: #fff; border-radius: 10px; padding: 14px 20px;
  margin-bottom: 24px; box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.rn-tabs { display: flex; gap: 6px; }
.rn-tab {
  display: flex; align-items: center; gap: 6px; padding: 8px 16px;
  border-radius: 8px; border: none; background: transparent; color: #555;
  font-size: 13px; cursor: pointer; transition: all 0.2s;
}
.rn-tab:hover { background: var(--primary-pale); color: var(--primary); }
.rn-tab.active { background: var(--primary); color: #fff; }
.rn-filters { display: flex; gap: 8px; }
.sort-select {
  padding: 6px 12px; border-radius: 6px; border: 1px solid #ddd;
  background: #fff; font-size: 13px; color: #555;
}

.featured-reports {
  display: grid; grid-template-columns: 280px 1fr; gap: 24px;
  background: #fff; border-radius: 12px; overflow: hidden;
  box-shadow: 0 2px 16px rgba(0,0,0,0.08); margin-bottom: 32px;
}
.fr-cover { height: 100%; min-height: 320px; position: relative; overflow: hidden; }
.fr-cover-content { padding: 28px; color: #fff; position: relative; height: 100%; display: flex; flex-direction: column; }
.frc-year { font-size: 48px; font-weight: 800; opacity: 0.2; line-height: 1; }
.frc-title { font-size: 24px; font-weight: 800; line-height: 1.3; margin-top: 12px; flex: 1; }
.frc-org { font-size: 12px; opacity: 0.6; }
.frc-logo { position: absolute; bottom: 20px; right: 20px; width: 50px; }
.fr-right { padding: 28px 28px 28px 0; }
.fr-tags { display: flex; gap: 6px; margin-bottom: 12px; }
.fr-tag { font-size: 11px; padding: 2px 8px; border-radius: 4px; background: #f0f0f0; color: #555; }
.fr-tag.highlight { background: var(--primary-pale); color: var(--primary); }
.fr-right h2 { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.fr-subtitle { font-size: 13px; color: var(--text-sub); margin-bottom: 16px; }
.fr-summary h4 { font-size: 14px; margin-bottom: 12px; }
.fr-summary ul { list-style: none; padding: 0; }
.fr-summary li { display: flex; gap: 10px; padding: 6px 0; font-size: 13px; color: var(--text-sub); align-items: center; }
.fs-num { font-size: 12px; font-weight: 700; color: var(--primary); min-width: 24px; }
.fr-actions { margin-top: 16px; padding-top: 16px; border-top: 1px solid #eee; }
.fr-meta { font-size: 12px; color: var(--text-light); margin-bottom: 12px; display: flex; gap: 8px; }
.fr-btns { display: flex; gap: 10px; }
.btn-primary { padding: 10px 24px; background: var(--primary); color: #fff; border: none; border-radius: 6px; font-size: 14px; font-weight: 600; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; }
.btn-outline { padding: 10px 24px; background: transparent; color: var(--primary); border: 1px solid var(--primary); border-radius: 6px; font-size: 14px; cursor: pointer; }

.tt-main-layout { display: grid; grid-template-columns: 1fr 320px; gap: 24px; }
.reports-section-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.reports-section-header h3 { font-size: 18px; font-weight: 700; }
.total-count { font-size: 13px; color: var(--text-light); }
.reports-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.report-grid-card { background: #fff; border-radius: 10px; overflow: hidden; box-shadow: var(--shadow); cursor: pointer; transition: all 0.3s; }
.report-grid-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.rgc-cover { height: 160px; position: relative; padding: 14px; display: flex; align-items: flex-start; justify-content: space-between; }
.rgc-type { background: rgba(255,255,255,0.2); color: #fff; font-size: 10px; padding: 2px 8px; border-radius: 4px; }
.rgc-year { color: rgba(255,255,255,0.3); font-size: 32px; font-weight: 800; position: absolute; bottom: 8px; right: 12px; }
.rgc-info { padding: 14px 16px; }
.rgc-cat { font-size: 11px; color: var(--primary); font-weight: 600; margin-bottom: 6px; }
.rgc-info h4 { font-size: 14px; font-weight: 700; line-height: 1.4; margin-bottom: 6px; }
.rgc-info p { font-size: 12px; color: var(--text-sub); line-height: 1.5; margin-bottom: 8px; }
.rgc-meta { display: flex; gap: 8px; font-size: 11px; color: var(--text-light); margin-bottom: 8px; }
.rgc-actions { display: flex; justify-content: space-between; align-items: center; }
.rgc-date { font-size: 11px; color: var(--text-light); }
.rgc-btn { padding: 4px 14px; border: 1px solid var(--primary); color: var(--primary); background: transparent; border-radius: 4px; font-size: 12px; cursor: pointer; }
.rgc-btn.outline { border-color: #ddd; color: #888; }
.rgc-btn.vip { background: var(--accent); border-color: var(--accent); color: #fff; }
.vip-card { position: relative; }
.vip-lock { position: absolute; top: 8px; right: 8px; text-align: center; color: rgba(255,255,255,0.8); }
.vip-lock span { display: block; font-size: 9px; }
.vip-badge { font-size: 9px; background: var(--accent); color: #fff; padding: 1px 6px; border-radius: 3px; }

.tt-sidebar { width: 320px; flex-shrink: 0; }
.research-areas { display: flex; flex-direction: column; gap: 10px; }
.ra-item-card { display: flex; align-items: center; gap: 12px; padding: 12px; border-radius: 8px; background: #f9f9f9; cursor: pointer; transition: all 0.2s; }
.ra-item-card:hover { background: var(--primary-pale); }
.rac-icon { width: 38px; height: 38px; border-radius: 8px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.rac-name { font-size: 14px; font-weight: 600; }
.rac-count { font-size: 11px; color: var(--text-light); }

.vip-promo { background: linear-gradient(135deg, #0d3d21, #1a6b3a); color: #fff; }
.vip-promo-content { text-align: center; padding: 4px 0; }
.vip-crown { margin-bottom: 8px; }
.vip-promo h4 { font-size: 15px; margin-bottom: 10px; }
.vip-promo ul { list-style: none; padding: 0; text-align: left; margin-bottom: 12px; }
.vip-promo li { font-size: 12px; padding: 4px 0; opacity: 0.85; }
.vip-price { margin-bottom: 8px; }
.price { font-size: 24px; font-weight: 800; }
.price-unit { font-size: 13px; opacity: 0.7; }
.price-discount { display: inline-block; background: var(--accent); font-size: 10px; padding: 1px 6px; border-radius: 4px; margin-left: 6px; vertical-align: middle; }

.custom-research p { font-size: 13px; color: var(--text-sub); margin-bottom: 12px; }
.cr-services { display: flex; flex-wrap: wrap; gap: 8px; }
.cr-services span { font-size: 12px; padding: 4px 10px; background: #f0f0f0; border-radius: 4px; color: #555; }

.btn-load-more {
  padding: 12px 40px; border: 1px solid #ddd; border-radius: 8px;
  background: #fff; font-size: 14px; color: var(--text-sub);
  cursor: pointer; transition: all 0.2s;
}
.btn-load-more:hover { border-color: var(--primary); color: var(--primary); }
.lm-text { display: block; }
.lm-sub { font-size: 11px; color: var(--text-light); margin-top: 4px; display: block; }

@media (max-width: 900px) {
  .featured-reports { grid-template-columns: 1fr; }
  .fr-cover { min-height: 200px; }
  .fr-right { padding: 20px; }
  .tt-hero .container { flex-direction: column; }
  .tt-hero-visual { display: none; }
  .tt-stats { flex-wrap: wrap; gap: 16px; }
  .tt-main-layout { grid-template-columns: 1fr; }
  .reports-grid { grid-template-columns: 1fr; }
  .tt-sidebar { width: 100%; }
  .research-nav { flex-direction: column; gap: 12px; }
  .rn-tabs { flex-wrap: wrap; }
}