/* Desktop: only the central timeline scrolls; side columns remain anchored. */
@media (min-width:1141px){
 html,body{height:100%;overflow:hidden}
 .topbar{height:76px;position:relative}
 .app-shell{height:calc(100dvh - 76px);max-width:1600px;width:100%;box-sizing:border-box;display:grid;grid-template-columns:clamp(190px,17vw,248px) minmax(0,1fr) clamp(220px,20vw,290px);gap:clamp(14px,2vw,30px);padding:18px clamp(16px,2.4vw,36px) 0;overflow:hidden;align-items:stretch}
 .left-sidebar,.right-sidebar{height:100%;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;min-height:0;padding-bottom:24px}
 .sidebar-sticky,.right-sticky{position:static}
 .main-content{height:100%;min-height:0;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;padding:0 3px 48px}
 .app-shell>*{min-width:0}
}
.discussion-hero{border:1px solid #e5e9f4;background:linear-gradient(135deg,#fff 55%,#f4f1ff);border-radius:22px;padding:28px;margin-bottom:18px}
.discussion-eyebrow{font-size:10px;letter-spacing:1.7px;font-weight:900;color:#6553b8}
.discussion-hero h1{font-size:clamp(27px,3vw,38px);letter-spacing:-1.4px;margin:8px 0;color:#111d36;line-height:1.2}
.discussion-dot{color:#7754e8}.discussion-hero p{font-size:14px;line-height:1.6;color:#5b6980;max-width:550px;margin:0 0 18px}
.discussion-topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:18px 0 24px}
.discussion-topic{min-width:0;display:flex;align-items:center;gap:10px;border:1px solid #e4e9f1;background:white;border-radius:13px;padding:13px 11px;color:#24334e;transition:background .2s,border-color .2s,transform .2s}
.discussion-topic:hover{border-color:#b4a6f6;transform:translateY(-2px)}.discussion-topic.is-active{border-color:#7659db;background:#f3f0ff;color:#5035af}
.discussion-topic strong{font-size:12px;line-height:1.3;overflow-wrap:anywhere}.discussion-topic-icon{display:grid;place-items:center;flex:none;width:28px;height:28px;background:#f0edff;color:#6a4cce;border-radius:9px;font-size:17px}
.discussion-current{display:flex;align-items:end;justify-content:space-between;gap:10px;margin:0 0 16px}.discussion-current h2{margin:5px 0;font-size:23px;letter-spacing:-.6px}.discussion-current p{color:#65738a;font-size:12px;margin:0}.discussion-count{white-space:nowrap;color:#77839a;font-size:11px;font-weight:700}.discussion-empty{padding:30px;text-align:center}.discussion-empty p{color:#68758c}
.discussion-shortcuts>a{display:flex;justify-content:space-between;align-items:center;padding:10px 2px;font-size:12px;font-weight:750;color:#33425e;border-bottom:1px solid #edf0f5}
@media(max-width:770px){.discussion-hero{padding:22px 17px}.discussion-topic-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.discussion-topic{padding:11px 9px}.discussion-current{align-items:start;flex-direction:column}.discussion-count{white-space:normal}}
@media(min-width:771px) and (max-width:1140px){.discussion-topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}