.research-page { --research-sidebar-width: 232px; }
.research-page [hidden] { display: none !important; }
.research-sidebar { position: fixed; inset: 0 auto 0 0; z-index: 40; display: flex; flex-direction: column; width: var(--research-sidebar-width); padding: 30px 16px; overflow-y: auto; overscroll-behavior: contain; background: #fff; border-right: 1px solid #e8e8e8; }
.research-sidebar-heading { display: flex; align-items: center; gap: 8px; margin: 0 4px 32px; }
.research-sidebar .research-brand strong { font-size: 25px; }
.research-nav { display: flex; flex-direction: column; gap: 6px; }
.research-sidebar > * { flex-shrink: 0; }
.research-sidebar-footer { margin-top: auto; padding-top: 28px; }
.research-sidebar-footer .research-nav-item { border-top: 1px solid #eee; border-radius: 0; font-size: 12px; }
.research-nav-item { display: flex; align-items: center; gap: 12px; min-height: 48px; padding: 12px; border-radius: 12px; color: #666; text-decoration: none; font-size: 13px; font-weight: 500; }
.research-nav-item:hover { background: #f7f7f7; color: #171717; }
.research-nav-item[aria-current="page"] { background: #f0f0f0; color: #111; font-weight: 650; }
.research-nav-item svg { flex-shrink: 0; width: 21px; height: 21px; }
.research-nav-status { color: #888; font-size: 10px; font-weight: 400; white-space: nowrap; }
.research-sidebar svg, .research-mobile-header svg { fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.research-icon-button { display: inline-flex; flex-shrink: 0; justify-content: center; align-items: center; width: 44px; height: 44px; padding: 10px; border: 0; border-radius: 10px; background: transparent; color: #333; cursor: pointer; }
.research-icon-button svg { width: 22px; height: 22px; }
.research-icon-button:hover { background: #f1f1f1; }
.research-menu-close, .research-mobile-header { display: none; }
.research-content { margin-left: var(--research-sidebar-width); min-width: 0; min-height: 100dvh; }
.research-content .research-main { padding: 30px 32px; }
.research-connect-page, .research-feature-page { max-width: 720px; margin: auto; padding: 12px 0 36px; }
.research-connect-page h1, .research-feature-page h1 { margin: 0 0 20px; font-size: 25px; line-height: 1.4; letter-spacing: -.035em; }
.research-placeholder { padding: 48px 24px; border: 1px solid #e8e8e8; border-radius: 16px; background: #fff; text-align: center; color: #777; }
.research-placeholder p { margin: 0; font-size: 13px; }
.research-connect-page .buzz-mcp-content { padding: 12px 24px 20px; border: 1px solid #e8e8e8; border-radius: 16px; background: #fff; }
.research-page :is(.research-nav-item, .research-brand, .research-icon-button):focus-visible { outline: 2px solid #555; outline-offset: 3px; }
@media (min-width: 901px) {
  .research-content .buzz-layout-e .buzz-filter-launcher { left: calc(50% + var(--research-sidebar-width) / 2); }
}
@media (max-width: 900px) {
  .research-mobile-header { position: sticky; top: 0; z-index: 30; display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid #e8e8e8; background: #fafafa; }
  .research-mobile-header .research-brand-caption { font-size: 9px; }
  .research-mobile-header .research-brand strong { font-size: 22px; }
  .research-sidebar { z-index: 60; width: min(300px, calc(100vw - 48px)); padding: 22px 16px; visibility: hidden; transform: translateX(-100%); transition: transform .18s ease; }
  .research-sidebar-heading { justify-content: space-between; margin-bottom: 24px; }
  .research-sidebar .research-brand strong { font-size: 24px; }
  .research-menu-close { display: inline-flex; }
  .research-menu-backdrop { position: fixed; inset: 0; z-index: 50; background: rgb(0 0 0 / 30%); }
  .research-menu-open { overflow: hidden; }
  .research-menu-open .research-sidebar { visibility: visible; transform: translateX(0); }
  .research-content { margin-left: 0; min-height: calc(100dvh - 78px); }
  .research-content .research-main { padding: 24px; }
  .research-content .buzz-layout-c .buzz-filter-area { top: 94px; max-height: calc(100dvh - 110px); }
}
@media (max-width: 760px) {
  .research-content .buzz-layout-c .buzz-filter-area { max-height: none; }
}
@media (max-width: 540px) {
  .research-content .research-main { padding: 20px 16px; }
  .research-connect-page, .research-feature-page { padding-top: 0; }
  .research-connect-page h1, .research-feature-page h1 { font-size: 22px; margin-bottom: 16px; }
  .research-connect-page .buzz-mcp-content { padding: 4px 16px 14px; }
}
@media (prefers-reduced-motion: reduce) {
  .research-sidebar { transition: none; }
}