:root{--font-scale: 1.15;--bg: #eef1f6;--panel: #ffffff;--panel-soft: #f7f8fb;--text: #222733;--muted: #414957;--muted-ink: #5b6373;--line: #e4e8f0;--accent: #e2546e;--accent-soft: #fdecef;--shadow: 0 1px 2px rgba(20, 30, 50, .05), 0 10px 30px rgba(20, 30, 50, .06);--radius: 14px;--r-sheet: 20px;--glass-alpha: .62;--glass-alpha-strong: .72;--glass-tint: rgba(255, 255, 255, var(--glass-alpha));--glass-tint-strong: rgba(255, 255, 255, var(--glass-alpha-strong));--glass-paper: rgba(250, 251, 253, .97);--glass-blur: blur(22px) saturate(170%) brightness(1.04);--glass-blur-off: blur(0px) saturate(100%) brightness(1);--glass-edge: rgba(255, 255, 255, .62);--glass-shadow: 0 12px 32px rgba(8, 18, 40, .16), 0 1px 2px rgba(8, 18, 40, .06);--scrim: rgba(10, 20, 38, .34);--ease-out: cubic-bezier(.2, .8, .2, 1);--font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", 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cubic-bezier(.2,.8,.2,1) both}@keyframes media-panel-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.media-card{margin:0;overflow:hidden;border:1px solid var(--line);border-radius:14px;background:var(--panel-soft);transition:transform .18s ease,box-shadow .18s ease}.media-card:hover{transform:translateY(-2px);box-shadow:0 8px 22px #141e321f}.media-card-image-button{display:block;width:100%;height:220px;padding:0;border:0;background:#eef1f6;cursor:zoom-in}.media-card-image-button img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .32s ease}.media-card-image-button:hover img{transform:scale(1.035)}.media-card-video-button{position:relative;display:block;width:100%;height:220px;padding:0;overflow:hidden;border:0;background:#000;cursor:pointer}.media-card-video-button img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .32s ease}.media-card-video-button:hover img{transform:scale(1.035)}.media-card-play{position:absolute;top:50%;left:50%;display:flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid rgba(255,255,255,.38);border-radius:50%;background:#00000085;color:#fff;font-size:16px;line-height:1;text-indent:2px;transform:translate(-50%,-50%);pointer-events:none;transition:transform .18s ease,background .18s ease}.media-card-video-button:hover .media-card-play{background:#000000ad;transform:translate(-50%,-50%) scale(1.06)}.media-card figcaption{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px;padding:8px 10px;color:var(--muted-ink);font-size:11px}.media-card figcaption time{flex:0 0 auto;font-variant-numeric:tabular-nums}.media-audio-list{display:flex;flex-direction:column;gap:10px;animation:media-panel-in .28s cubic-bezier(.2,.8,.2,1) both}.media-audio-row{display:flex;align-items:center;gap:14px;padding:10px 12px;border:1px solid var(--line);border-radius:14px;background:var(--panel-soft)}.media-audio-meta{display:flex;flex:0 0 150px;flex-direction:column;gap:3px;min-width:0}.media-audio-meta strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.media-audio-meta span{color:var(--muted-ink);font-size:11px}.media-audio-row .audio-player{flex:1;width:auto;background:var(--panel)}.media-audio-player-wrap{flex:1;min-width:0}.media-audio-player-wrap .audio-player{width:100%}.media-audio-transcript{margin-top:5px;padding-left:8px;border-left:2px solid #f0c2cd;color:#4a5262;font-size:calc(12px * var(--font-scale));line-height:1.5;overflow-wrap:anywhere}.media-save-button{flex:0 0 auto;height:34px;padding:0 12px;border:1px solid var(--line);border-radius:9px;background:var(--panel);color:var(--text);font-size:calc(12px * var(--font-scale));cursor:pointer}.media-save-button:disabled{opacity:.55;cursor:wait}.media-library-toast{position:fixed;bottom:max(24px,calc(env(safe-area-inset-bottom) + 20px));left:50%;z-index:130;padding:9px 16px;border-radius:999px;background:#141820f0;color:#fff;font-size:12px;white-space:nowrap;transform:translate(-50%)}.media-more{display:block;min-width:140px;margin:18px auto 0}.media-more-top{margin:0 auto 16px}.media-library-state{padding:48px 16px;color:var(--muted-ink);text-align:center}.media-library-state.error{color:#c0392b}.media-library-loading{position:absolute;top:0;right:0;bottom:0;left:0;z-index:2;display:flex;align-items:center;justify-content:center;gap:10px;background:#fffc;color:var(--muted-ink);font-size:calc(13px * var(--font-scale));-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.media-spinner{width:20px;height:20px;border:2px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:boot-spin .8s linear infinite}.image-preview{position:fixed;top:0;right:0;bottom:0;left:0;z-index:120;display:flex;align-items:center;justify-content:center;padding:24px;background:#000000e0;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);animation:data-overlay-in .16s ease both}.video-preview{position:fixed;top:0;right:0;bottom:0;left:0;z-index:120;display:flex;align-items:center;justify-content:center;padding:24px;background:#000000eb;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);animation:data-overlay-in .16s ease both}.video-preview-stage{display:flex;flex-direction:column;align-items:center;gap:10px;max-width:94vw;max-height:calc(100vh - 72px);min-height:0}.video-preview-player{display:block;max-width:94vw;max-height:72vh;min-height:0;border-radius:10px;background:#000;box-shadow:0 18px 60px #00000080;animation:image-preview-zoom .22s cubic-bezier(.2,.8,.2,1) both}.video-preview-save{position:absolute;top:max(16px,env(safe-area-inset-top));left:16px;z-index:2;height:38px;padding:0 14px;border:1px solid rgba(255,255,255,.24);border-radius:999px;background:#ffffff1f;color:#fff;font-size:12px;cursor:pointer}.video-preview-save:disabled{opacity:.55;cursor:wait}.video-preview-transcript{width:min(720px,94vw);max-height:18vh;overflow-y:auto;padding:10px 14px;border:1px solid rgba(255,255,255,.16);border-radius:12px;background:#10141cd1;color:#fff;font-size:calc(13px * var(--font-scale));line-height:1.6;overflow-wrap:anywhere}.video-toast{position:absolute;bottom:max(24px,calc(env(safe-area-inset-bottom) + 20px));left:50%;z-index:3;padding:9px 16px;border-radius:999px;background:#141820f0;color:#fff;font-size:12px;white-space:nowrap;transform:translate(-50%)}.image-preview-close,.video-preview-close{position:absolute;top:max(16px,env(safe-area-inset-top));right:16px;z-index:2;width:38px;height:38px;padding:0;border:1px solid rgba(255,255,255,.24);border-radius:50%;background:#ffffff1f;color:#fff;font-size:22px;line-height:1;cursor:pointer}.image-preview-jump,.video-preview-jump{position:absolute;top:max(16px,env(safe-area-inset-top));z-index:2;height:38px;padding:0 14px;border:1px solid rgba(255,255,255,.24);border-radius:999px;background:#ffffff1f;color:#fff;font-size:12px;white-space:nowrap;cursor:pointer}.image-preview-jump{left:16px}.video-preview-jump{right:64px}.image-preview-stage{display:flex;align-items:center;justify-content:center;max-width:94vw;max-height:calc(100vh - 110px)}.image-preview-img{display:block;max-width:92vw;max-height:78vh;border-radius:10px;box-shadow:0 18px 60px #00000073;object-fit:contain;cursor:zoom-out;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;animation:image-preview-zoom .22s cubic-bezier(.2,.8,.2,1) both}@keyframes image-preview-zoom{0%{opacity:0;transform:scale(.94)}to{opacity:1;transform:scale(1)}}.image-preview-loading{position:absolute;color:#ffffffb3;font-size:13px}.image-preview-hint{position:absolute;right:16px;bottom:max(18px,env(safe-area-inset-bottom));left:16px;color:#ffffff9e;font-size:12px;text-align:center;pointer-events:none}.image-actions{position:absolute;right:16px;bottom:max(18px,env(safe-area-inset-bottom));left:16px;display:grid;grid-template-columns:repeat(3,1fr);gap:8px;width:min(460px,calc(100vw - 32px));margin:0 auto;padding:8px;border:1px solid rgba(255,255,255,.18);border-radius:16px;background:#1c202af0;box-shadow:0 14px 44px #0006;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.image-actions button{height:44px;border:1px solid rgba(255,255,255,.14);border-radius:10px;background:#ffffff1a;color:#fff;font-size:13px;cursor:pointer}.image-actions button:disabled{opacity:.45;cursor:wait}.image-actions .image-actions-cancel{grid-column:1 / -1;height:38px;background:transparent;color:#ffffffb3}.image-toast{position:absolute;bottom:max(92px,calc(env(safe-area-inset-bottom) + 74px));left:50%;z-index:3;padding:8px 14px;border-radius:999px;background:#141820f0;color:#fff;font-size:12px;white-space:nowrap;transform:translate(-50%)}.redpacket-card{display:flex;flex-direction:column;gap:8px;max-width:100%;margin-top:5px;padding:8px;border:1px solid #f0cdcd;border-radius:12px;background:#fff7f5}.redpacket-cover{display:block;max-width:220px;max-height:300px;object-fit:contain;border-radius:8px}.redpacket-cover-fallback{display:grid;place-items:center;width:64px;height:64px;background:#ffe9e5;font-size:calc(32px * var(--font-scale))}.redpacket-text{color:#9a3b3b;font-size:calc(13px * var(--font-scale));line-height:1.5;word-break:break-word}.gift-card{display:flex;align-items:center;gap:10px;max-width:100%;margin-top:5px;padding:8px 12px;border:1px solid #f3e5cf;border-radius:12px;background:#fffaf3}.gift-image{width:40px;height:40px;flex:0 0 auto;object-fit:contain}.gift-image-fallback{display:grid;place-items:center;font-size:calc(24px * var(--font-scale))}.gift-action{color:#a07a4a;font-size:calc(12px * var(--font-scale))}.gift-count{margin:0 2px;color:#8a5a24;font-size:calc(14px * var(--font-scale));font-weight:700}.gift-name{color:#8a5a24;font-size:calc(13px * var(--font-scale));font-weight:600}.gift-text{margin-top:2px;font-size:calc(13px * var(--font-scale));white-space:pre-wrap;overflow-wrap:anywhere}.flipcard-audio{width:100%;margin-top:8px}.flipcard-video{display:block;width:100%;max-height:380px;margin-top:8px;border-radius:10px;background:#000}.flipcard{width:620px;max-width:100%;padding:14px;border-radius:16px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}.flipcard-top{display:flex;align-items:center;gap:8px;margin-bottom:10px;font-size:calc(11px * var(--font-scale));color:var(--muted-ink)}.flipcard-badge{padding:2px 8px;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-weight:700}.flipcard-type{padding:2px 7px;border-radius:999px;background:#f2f4f8}.flipcard-cost{color:#b9722e}.flipcard-question,.flipcard-answer{padding:10px 12px;border-radius:12px}.flipcard-question{background:#f7f8fb;border:1px solid #eceff5}.flipcard-answer{margin-top:10px;background:#fffafb;border:1px solid #f6e4e9}.flipcard-who{display:flex;align-items:baseline;gap:6px;margin-bottom:5px;color:#5a6273;font-size:calc(12px * var(--font-scale));font-weight:600}.flipcard-who .level{color:var(--muted-ink);font-weight:400}.flipcard-text{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.6;font-size:calc(14px * var(--font-scale))}.flipcard-media{padding:10px 12px;border-radius:10px;background:#f2f4f8}.flipcard-media-title{font-weight:600}.flipcard-foot{display:flex;gap:12px;margin-top:10px;font-size:calc(11px * var(--font-scale));color:var(--muted-ink)}.state{margin:40px auto;color:#fff;text-shadow:0 1px 3px rgba(8,14,28,.55);text-align:center}.state.error{color:#ffe1e6}@media(max-width:960px){.app{grid-template-columns:1fr;grid-template-rows:auto minmax(0,1fr)}.sidebar{flex-direction:row;flex-wrap:wrap;align-items:flex-end;gap:10px 14px;padding:12px 16px calc(12px + env(safe-area-inset-bottom));border-right:0;border-bottom:1px solid var(--line);overflow:visible}.sidebar-head{display:contents}.brand,.room-range,.stats{display:none}.room-card{padding:8px 12px;flex:0 0 auto}.room-name{font-size:calc(16px * var(--font-scale))}.room-member{margin-top:2px;font-size:calc(12px * var(--font-scale))}.controls{flex:1 1 520px;flex-direction:row;flex-wrap:wrap;align-items:center}.date-row{flex:1 1 220px}.segmented{flex:0 0 150px}.search{flex:1 1 280px}.background-row{display:none}.people{flex:1 1 100%}.people-toggle{display:flex}.people-body{display:none}.people.open .people-body{display:flex}.people-results{max-height:180px}.chat-header{padding:12px 16px}.date-row{display:none}.media-library{padding:0}.media-library-card{width:100%;height:100%;border:0;border-radius:0;background:var(--glass-paper);-webkit-backdrop-filter:none;backdrop-filter:none;box-shadow:none}.media-library-head{padding:14px 16px 10px}.media-tabs{padding:0 16px 10px}.media-library-body{padding:12px 44px calc(20px + env(safe-area-inset-bottom)) 16px}.media-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.media-card-image-button,.media-card-video-button{height:160px}.media-card figcaption{flex-direction:column;align-items:stretch;gap:6px}.media-card-actions{flex-direction:column;align-items:flex-end;gap:4px}.media-card figcaption time{font-size:10px;white-space:nowrap}.media-card .media-jump-button{height:24px;padding:0 8px;font-size:calc(10px * var(--font-scale))}.media-audio-row{flex-direction:column;align-items:stretch;gap:8px}.media-audio-meta{flex:0 0 auto;flex-direction:row;justify-content:space-between}.media-audio-row .media-save-button,.media-row-actions{width:100%}.media-row-actions .media-save-button{flex:1}.media-time-rail{right:0;width:32px}.media-time-rail .time-rail-year{display:none}.message-list{padding:16px 54px calc(28px + env(safe-area-inset-bottom)) 16px}.time-rail{top:64px;right:2px;bottom:64px;width:32px}.time-rail-year{display:none}}@media(max-width:600px){.view-pager{display:flex;flex:1;min-height:0;overflow-x:auto;overflow-y:hidden;scroll-snap-type:x mandatory;overscroll-behavior-x:contain;scrollbar-width:none;-webkit-overflow-scrolling:touch}.view-pager::-webkit-scrollbar{display:none}.view-page{display:flex;flex:0 0 100%;min-width:100%;height:100%;flex-direction:column;overflow:hidden;scroll-snap-align:start;scroll-snap-stop:always}.view-page>.message-view{flex:1;min-height:0;overscroll-behavior-x:auto}.calendar{position:fixed;top:auto;right:12px;bottom:12px;left:12px;width:auto;max-height:72vh;overflow:auto;z-index:21}.calendar-backdrop{background:var(--scrim)}.app{grid-template-columns:1fr;grid-template-rows:1fr}.sidebar-head{display:flex}.sidebar{position:fixed;top:0;right:auto;bottom:0;z-index:60;width:min(300px,80vw);height:100vh;height:100dvh;flex-direction:column;flex-wrap:nowrap;align-items:stretch;gap:16px;padding:18px 16px calc(16px + env(safe-area-inset-bottom));border-right:1px solid var(--glass-edge);border-bottom:0;background:var(--glass-tint);box-shadow:var(--glass-shadow);-webkit-backdrop-filter:var(--glass-blur-off);backdrop-filter:var(--glass-blur-off);overflow-y:auto;left:-105%;transition:left .22s ease,-webkit-backdrop-filter 1ms linear,backdrop-filter 1ms linear}.sidebar.open{left:0;-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);transition:left .22s ease,-webkit-backdrop-filter 1ms linear .22s,backdrop-filter 1ms linear .22s}.drawer-backdrop{display:none;position:fixed;top:0;right:0;bottom:0;left:0;z-index:55;background:var(--scrim)}.drawer-backdrop.open{display:block}.drawer-close{display:inline-flex;align-items:center;justify-content:center}.menu-button{display:inline-flex}.brand,.room-card,.room-range{display:block}.stats{display:grid;margin-top:0}.background-row{display:flex}.people-toggle{display:none}.people-body{display:flex}.people{flex:0 0 auto;width:100%}.person-sheet{align-items:flex-end;padding:12px}.person-sheet-card{width:100%;padding:16px;border-radius:18px 18px 14px 14px}.controls{flex:0 0 auto;width:100%;flex-direction:column}.date-row,.search,.segmented{flex:1 1 auto;width:100%}.segmented{display:none}.chat-header{position:absolute;top:0;right:0;left:0;z-index:4;align-items:center;justify-content:flex-start;gap:10px;padding:calc(8px + env(safe-area-inset-top)) 12px 6px;border-bottom:0;border-radius:0 0 18px 18px;background:var(--glass-tint);box-shadow:var(--glass-shadow);transition:background .2s var(--ease-out),padding .2s var(--ease-out)}.chat-header.compact{background:var(--glass-tint-strong);padding-bottom:4px}.chat-head-main{flex:1;min-width:0}.chat-title{font-size:calc(16px * var(--font-scale))}.search-clear-button,.filter-clear-button{width:28px;padding:0;justify-content:center}.clear-button-icon{width:15px;height:15px}.clear-button-label{display:none}.chat-sub{margin-top:2px;max-height:1.6em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;opacity:1;transition:max-height .2s var(--ease-out),margin-top .2s var(--ease-out),opacity .14s ease}.chat-header.compact .chat-sub{max-height:0;margin-top:0;opacity:0}.menu-button{display:inline-flex;width:32px;height:32px;border:1px solid var(--glass-edge);border-radius:10px;background:rgba(255,255,255,var(--glass-alpha-strong));font-size:calc(16px * var(--font-scale))}.header-icon-button{width:28px;height:28px;border-color:var(--glass-edge);background:rgba(255,255,255,var(--glass-alpha-strong))}.header-date-button{height:26px;border-color:var(--glass-edge);background:rgba(255,255,255,var(--glass-alpha-strong))}.message-list{padding:calc(74px + env(safe-area-inset-top)) 42px calc(24px + env(safe-area-inset-bottom)) 12px}.time-rail,.timeline-loading.older{top:calc(78px + env(safe-area-inset-top))}.avatar{width:32px;height:32px}.message{gap:8px;margin-bottom:14px}.avatar-frame{top:-3px;right:-3px;bottom:-3px;left:-3px;width:calc(100% + 6px);height:calc(100% + 6px)}.flipcard{padding:11px;border-radius:14px}.flipcard-text{font-size:calc(13px * var(--font-scale))}}@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))){.chat-header,.sidebar,.media-library-card{background:#fffffff2}}@media(prefers-reduced-motion:reduce){.chat-header,.chat-sub,.sidebar,.media-library,.media-library-card,.person-sheet,.guide-overlay{transition-duration:.01ms!important;animation-duration:.01ms!important}}