body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; max-width: 700px; margin: 0 auto; padding: 20px; background: #fff; color: #111; }
nav { display: flex; justify-content: space-between; align-items: center; padding: 12px 0; border-bottom: 1px solid #eee; flex-wrap: wrap; }
nav .logo { font-size: 18px; font-weight: 600; }
nav a { margin-left: 14px; color: #555; text-decoration: none; font-size: 14px; }
nav a:hover { color: #111; }
.page-title { font-size: 22px; font-weight: 600; margin: 20px 0 6px; }
.page-sub { font-size: 14px; color: #777; margin: 0 0 20px; }
.feed-header { font-size: 13px; color: #888; margin: 16px 0 8px; }
.card { border: 1px solid #eee; border-left: 3px solid #1D9E75; border-radius: 8px; padding: 12px 14px; margin-bottom: 10px; }
.card-oi_update { border-left-color: #1D9E75; }
.card-price_action { border-left-color: #378ADD; }
.card-news { border-left-color: #EF9F27; }
.card-premarket, .card-postmarket, .card-weekly_report { border-left-color: #8B5CF6; }
.card-top { display: flex; justify-content: space-between; font-size: 12px; color: #888; margin-bottom: 4px; }
.card-type { font-weight: 600; text-transform: capitalize; }
.card-content { font-size: 14px; line-height: 1.6; }
.source { font-size: 12px; margin-top: 4px; }
.source a { color: #378ADD; text-decoration: none; }
.list-item { display: block; padding: 14px 0; border-bottom: 1px solid #eee; text-decoration: none; color: inherit; }
.list-item:hover { background: #fafafa; }
.list-meta { font-size: 12px; color: #888; margin-bottom: 4px; }
.list-title { font-size: 15px; line-height: 1.5; }
.article-body { font-size: 15px; line-height: 1.7; margin: 16px 0; }
.article-body p { margin: 0 0 14px; }
.empty { color: #888; font-size: 14px; padding: 20px 0; }
.disclaimer { font-size: 12px; color: #999; margin-top: 24px; border-top: 1px solid #eee; padding-top: 10px; line-height: 1.5; }