.tab-btn {
  background: none;
  border: none;
  color: var(--text-tertiary);
  font-family: 'SYN', sans-serif;
  font-size: 13px;
  padding: 12px 16px;
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  transition: color 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  user-select: none;
  -webkit-user-select: none;
  display: flex;
  align-items: center;
  gap: 7px;
}

.tab-btn img {
  width: 15px;
  height: 15px;
  filter: brightness(0) invert(1);
  opacity: 0.45;
  transition: opacity 0.2s;
}

.tab-btn:hover { color: var(--text-secondary); }
.tab-btn:hover img { opacity: 0.65; }

.tab-btn.active { color: var(--accent-primary); }

.tab-btn.active img {
  opacity: 1;
  filter: brightness(0) saturate(100%) invert(50%) sepia(80%) saturate(500%) hue-rotate(195deg) brightness(110%);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-primary);
  border-radius: 2px 2px 0 0;
}

.results-info {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-bottom: 18px;
  user-select: none;
  -webkit-user-select: none;
}

.result-card {
  background: transparent;
  border-radius: 16px;
  padding: 15px 18px;
  margin-bottom: 4px;
  cursor: pointer;
  transition: background 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  display: block;
}

.result-card:hover { background: rgba(255, 255, 255, 0.04); }
.result-card:active { transform: scale(0.995); }

.result-source {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 4px;
}

.result-favicon {
  width: 16px;
  height: 16px;
  border-radius: 4px;
}

.result-url {
  font-size: 12px;
  color: var(--text-tertiary);
  user-select: none;
  -webkit-user-select: none;
}

.result-title {
  font-size: 17px;
  font-weight: 500;
  color: #7ab8ff;
  margin-bottom: 4px;
  line-height: 1.3;
  user-select: text;
  -webkit-user-select: text;
  transition: color 0.2s;
}

.result-card:hover .result-title { color: #9ecbff; }

.result-snippet {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.62;
  user-select: text;
  -webkit-user-select: text;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}

.news-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  overflow: hidden;
  text-decoration: none;
  display: block;
  transition: border-color 0.2s cubic-bezier(0.4, 0, 0.2, 1), transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.news-card:hover { border-color: var(--border-normal); transform: translateY(-2px); }
.news-card:active { transform: scale(0.98); }

.news-thumb {
  width: 100%;
  height: 130px;
  object-fit: cover;
  display: block;
}

.news-body { padding: 14px 16px; }

.news-source {
  font-size: 11px;
  color: var(--text-tertiary);
  margin-bottom: 6px;
  user-select: none;
  -webkit-user-select: none;
}

.news-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.35;
  margin-bottom: 6px;
  user-select: text;
  -webkit-user-select: text;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-snippet {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
  user-select: text;
  -webkit-user-select: text;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.images-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 8px;
}

.image-item {
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 1;
  display: block;
  background: rgba(255, 255, 255, 0.04);
  transition: opacity 0.2s;
}

.image-item:hover { opacity: 0.82; }
.image-item img { width: 100%; height: 100%; object-fit: cover; display: block; }

.video-card { display: flex; gap: 14px; align-items: flex-start; }

.video-thumb {
  width: 148px;
  height: 83px;
  border-radius: 10px;
  background: rgba(62, 145, 255, 0.08);
  flex-shrink: 0;
  overflow: hidden;
  position: relative;
  border: 1px solid var(--border-subtle);
}

.video-thumb img { width: 100%; height: 100%; object-fit: cover; }

.video-placeholder-icon {
  width: 28px !important;
  height: 28px !important;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  filter: brightness(0) invert(1);
  opacity: 0.3;
}

.video-duration {
  position: absolute;
  bottom: 5px;
  right: 6px;
  background: rgba(0, 0, 0, 0.75);
  color: #fff;
  font-size: 11px;
  padding: 2px 5px;
  border-radius: 4px;
  user-select: none;
  -webkit-user-select: none;
}

.video-info { flex: 1; min-width: 0; }

.knowledge-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 22px;
  transition: border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.knowledge-card:hover { border-color: var(--border-normal); }

.knowledge-title {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 3px;
  user-select: text;
  -webkit-user-select: text;
}

.knowledge-subtitle {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-bottom: 14px;
  user-select: text;
  -webkit-user-select: text;
}

.knowledge-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.65;
  border-top: 1px solid var(--border-subtle);
  padding-top: 14px;
  user-select: text;
  -webkit-user-select: text;
}

.kg-attrs { margin-top: 14px; display: flex; flex-direction: column; gap: 8px; }

.kg-row { display: flex; gap: 8px; font-size: 13px; }

.kg-key {
  color: var(--text-tertiary);
  flex-shrink: 0;
  user-select: none;
  -webkit-user-select: none;
}

.kg-val { color: var(--text-secondary); user-select: text; -webkit-user-select: text; }

.error-card {
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: 16px;
  padding: 20px 24px;
  margin-top: 8px;
}

.error-title {
  font-size: 15px;
  font-weight: 500;
  color: #f87171;
  margin-bottom: 6px;
  user-select: none;
  -webkit-user-select: none;
}

.error-msg {
  font-size: 13px;
  color: var(--text-secondary);
  user-select: text;
  -webkit-user-select: text;
}