.m4-sidebar-handle{font-size:11px;color:#999;overflow-wrap:anywhere;margin:0 13px 10px}.m4-badge{display:inline-flex;align-items:center;justify-content:center;min-width:19px;height:19px;padding:0 5px;border-radius:10px;background:#414141;color:white;font-size:10px;margin-left:auto;font-variant-numeric:tabular-nums}.m4-solved-tag{font-size:10px;color:#656565;border:1px solid #ddd;border-radius:4px;padding:0 5px;white-space:nowrap}.m4-list-filter{display:flex;align-items:center;gap:10px}.m4-list-filter select,.m4-subscription{font-size:12px;color:#666;background:white;border:1px solid #ddd;border-radius:7px;min-height:34px;padding:5px 9px;max-width:180px}
.m4-topic-controls{margin:0 0 20px;padding:12px 0;border-bottom:1px solid #eee;color:#777;font-size:12px}.m4-topic-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.m4-topic-actions>label{display:flex;gap:8px;align-items:center}.m4-button{border:1px solid #dedede;background:white;color:#666;border-radius:7px;padding:7px 11px;font-size:12px;min-height:34px;cursor:pointer}.m4-button:hover{background:#f4f4f4}.m4-button:disabled{opacity:.45;cursor:default}.m4-button[aria-pressed=true]{background:#ededed;border-color:#bcbcbc;color:#333}.m4-subscription-note{font-size:11px;color:#999;margin-top:8px;line-height:1.6}.m4-topic-error{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:12px;color:#9a5e5e;margin-top:8px}.m4-seen-count{font-size:11px;color:#888}.m4-handle{font-size:10px;color:#9b9b9b;overflow-wrap:anywhere}.post-header .m4-handle{max-width:180px;overflow:hidden;text-overflow:ellipsis}.m4-post-interactions{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin-top:12px}.m4-reactions{display:flex;align-items:center;gap:5px;flex-wrap:wrap}.m4-reaction{display:inline-flex;align-items:center;gap:5px;border:1px solid #e4e4e4;border-radius:18px;background:white;color:#888;min-height:30px;font-size:11px;padding:3px 9px;cursor:pointer}.m4-reaction[aria-pressed=true]{background:#ececec;color:#333;border-color:#bcbcbc}.m4-reaction:disabled{cursor:default;opacity:.6}.m4-reaction-count{font-variant-numeric:tabular-nums;color:#999}.m4-answer-button{margin-left:auto;border:0;background:none;color:#888;font-size:11px;min-height:32px;padding:4px}.m4-answer-marker{font-size:11px;font-weight:600;color:#555;margin:0 0 8px}.m4-mention-button{background:none;border:0;color:#929292;padding:3px;font-size:11px;min-height:28px;cursor:pointer}.m4-mention-insert{border:1px solid #e4e4e4;background:#fafafa;border-radius:7px;padding:7px 10px;color:#777;font-size:12px;min-height:36px;margin-left:5px}.m4-read{opacity:.7}
.m4-modal{width:min(680px,calc(100vw - 40px));max-height:calc(100dvh - 48px);padding:0;border:1px solid #ddd;border-radius:14px;color:#444;background:white;box-shadow:0 18px 70px #0002;overflow:auto}.m4-modal::backdrop{background:#0005}.m4-modal-header{position:sticky;top:0;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;background:white;border-bottom:1px solid #eee}.m4-modal-header h2{font-size:17px;font-weight:600;margin:0}.m4-modal-close{border:0;background:none;color:#888;font-size:12px;padding:8px;min-height:36px}.m4-modal-body{padding:18px 22px}.m4-inbox-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:12px}.m4-inbox-tabs{display:flex;gap:4px}.m4-inbox-tabs button{border:0;border-radius:6px;background:white;color:#888;padding:7px 11px;font-size:12px;min-height:34px}.m4-inbox-tabs button[aria-pressed=true]{background:#ededed;color:#333}.m4-notification{border-bottom:1px solid #eee;padding:15px 0;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px}.m4-notification-open{display:block;width:100%;border:0;background:none;text-align:left;padding:0;color:#444;cursor:pointer}.m4-notification-open strong{display:block;font-size:14px;line-height:1.7;font-weight:500;overflow-wrap:anywhere}.m4-notification-open span{display:block;font-size:12px;color:#888;line-height:1.8;margin-top:3px;overflow-wrap:anywhere}.m4-notification time{display:block;color:#aaa;font-size:10px;margin-top:6px}.m4-unread-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:#666;margin-right:6px}.m4-inbox-actions{display:flex;align-items:flex-start}.m4-inbox-actions button{padding:5px 7px;min-height:32px;white-space:nowrap;font-size:10px}.m4-empty{padding:35px 10px;color:#999;text-align:center;font-size:13px}.m4-load-more{display:block;margin:20px auto 0}.m4-modal-error{font-size:12px;color:#a15f5f;line-height:1.7;margin:12px 0}.m4-source-body{font-size:15px;line-height:1.9;overflow-wrap:anywhere;white-space:pre-wrap}.m4-source-body.markdown-body{white-space:normal}.m4-source-heading{font-size:18px;line-height:1.6;margin:0 0 12px;overflow-wrap:anywhere}.m4-source-meta{font-size:11px;color:#aaa;margin:0 0 15px;overflow-wrap:anywhere}.m4-source-footer{display:flex;justify-content:flex-end;padding-top:18px}.m4-mention-search{display:flex;gap:8px}.m4-mention-search input{min-width:0;flex:1;border:1px solid #ddd;border-radius:7px;padding:10px;font-size:15px;color:#444}.m4-mention-result{display:flex;align-items:center;justify-content:space-between;gap:12px;text-align:left;border:0;border-bottom:1px solid #eee;background:white;padding:12px 0;width:100%;color:#555;min-height:48px;font-size:13px}.m4-mention-result span{color:#999;font-size:11px;overflow-wrap:anywhere}
body.m4-modal-open .reading-mobile{display:none!important}
@media(max-width:760px){.m4-sidebar-handle{font-size:12px}.m4-list-filter{gap:6px}.m4-list-filter select{max-width:110px;min-height:36px;font-size:12px;padding:5px}.m4-topic-controls{padding:10px 0;margin-bottom:16px}.m4-topic-actions{gap:7px}.m4-topic-actions>label{font-size:11px}.m4-subscription{font-size:13px;max-width:140px;min-height:40px}.m4-button{min-height:40px;font-size:12px}.m4-topic-actions .m4-button{padding:7px 9px}.m4-post-interactions{gap:4px}.m4-reaction{min-height:36px;padding:4px 9px;font-size:11px}.m4-answer-button{width:100%;text-align:left;margin:2px 0 0;min-height:36px}.post-header .m4-handle{max-width:100px;font-size:9px}.m4-mention-button{min-height:36px}.m4-mention-insert{min-height:40px}.m4-modal{width:calc(100vw - 16px);max-height:calc(100dvh - 20px);border-radius:12px}.m4-modal-header{padding:12px 15px}.m4-modal-header h2{font-size:16px}.m4-modal-body{padding:14px 15px}.m4-notification{grid-template-columns:minmax(0,1fr);gap:5px;padding:13px 0}.m4-inbox-actions{justify-content:flex-end}.m4-inbox-actions button{min-height:36px}.m4-notification-open strong{font-size:14px}.m4-notification-open span{font-size:12px}.m4-mention-search input{font-size:16px}.m4-mention-result{font-size:14px;flex-wrap:wrap;justify-content:flex-start;gap:5px 12px}.m4-source-body{font-size:16px}}

/* Topic subscriptions share the reading navigation; no standalone body block. */
.reading-nav .m4-topic-controls{margin:0 0 0 auto;padding:0 0 0 12px;border:0;border-left:1px solid #e7e7e7;min-width:0;max-width:100%}
.reading-nav .m4-topic-actions{gap:6px;align-items:center;flex-wrap:nowrap;overflow-x:auto;max-width:100%;scrollbar-width:thin}
.reading-nav .m4-subscription-label,.reading-nav .m4-subscription-note{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.reading-nav .m4-topic-actions>label{min-width:0;gap:0}
.reading-nav .m4-subscription{min-height:36px;width:auto;max-width:130px}
.reading-nav .m4-topic-actions>.m4-button{white-space:nowrap;min-height:36px;font-size:12px;padding:6px 9px}
@media(min-width:1440px){@container reading (min-width:940px){
 .reading-nav .m4-topic-controls{margin:8px 0 0;padding:12px 0 0;border-left:0;border-top:1px solid #e6e6e6;width:100%}
 .reading-nav .m4-topic-actions{display:grid;grid-template-columns:minmax(0,1fr) auto;overflow:visible}
 .reading-nav .m4-subscription{width:100%;max-width:none}
 .reading-nav .m4-topic-actions>.m4-button:not(:first-of-type),.reading-nav .m4-seen-count{grid-column:1/-1}
}}
@media(max-width:760px){
 .reading-nav:has(.m4-topic-controls){display:flex;flex-wrap:nowrap;padding:8px 0 0;margin-top:8px}
 .reading-nav:has(.m4-topic-controls)>:not(.m4-topic-controls){display:none}
 .reading-nav .m4-topic-controls{border:0;padding:0;margin:0;width:100%}
 .reading-nav .m4-topic-actions{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:thin;max-width:100%;padding-bottom:2px}
 .reading-nav .m4-topic-actions>*{flex:none}
 .reading-nav .m4-subscription{min-height:40px;font-size:12px;max-width:128px}
 .reading-nav .m4-topic-actions>.m4-button{min-height:40px;font-size:12px}
}