.activity-shell { max-width: 900px; padding-top: 28px; padding-bottom: 40px; }
.activity-shell h1 { font-size: clamp(26px, 5vw, 40px); }
.activity-nav { margin-bottom: 24px; }
.activity-entry { border-top: 1px solid var(--rule); padding: 18px 0; overflow-wrap: anywhere; }
.activity-entry p { margin: 8px 0; }
.activity-meta { font-family: var(--f-mono); font-size: 12px; color: var(--ink2); }
.activity-shell form { margin-bottom: 24px; }
.activity-shell textarea, .activity-shell select { max-width: 100%; width: 100%; box-sizing: border-box; }
.activity-shell label { display: block; margin-bottom: 6px; }