:root{color-scheme:light;font-family:Noto Sans TC,Segoe UI,system-ui,-apple-system,BlinkMacSystemFont,sans-serif;color:var(--color-text);background:var(--color-bg);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-optical-sizing:auto;font-weight:400;--color-bg: #f4f6f8;--color-bg-alt: #f1f4f6;--color-surface: #ffffff;--color-surface-alt: #f8f9fa;--color-text: #1f2933;--color-text-strong: #1f2933;--color-text-secondary: #4f5d68;--color-muted: #687782;--color-muted-strong: #75838d;--color-border: #e4e9ed;--color-border-strong: #d7dfe4;--color-input-bg: #ffffff;--color-hover: #edf1f3;--color-accent: #315f7b;--color-accent-strong: #173b55;--color-accent-hover: #24526f;--color-accent-soft: #e8eff3;--color-accent-border: #cbd9e1;--color-link: #28658a;--color-focus: #7cb4d3;--color-on-accent: #ffffff;--color-on-brand: #ffffff;--color-brand-bg: #173b55;--color-disabled: #aab4bb;--color-danger: #9a3732;--color-danger-strong: #b1443c;--color-danger-action: #a8322b;--color-danger-action-hover: #8f2924;--color-danger-action-text: #ffffff;--color-danger-soft: #fff8f7;--color-danger-border: #efd2ce;--color-warning: #805915;--color-warning-soft: #fbf5e9;--color-warning-border: #ead9b5;--color-success: #29976d;--color-success-text: #327457;--color-success-soft: #eef4f2;--color-info-soft: #edf5f9;--color-info-border: #c9dce9;--color-spinner-track: rgba(255, 255, 255, .4);--color-unread: rgba(255, 255, 255, .62);--shadow-card: 0 8px 28px rgba(35, 55, 68, .05);--font-scale: 112.5%}:root,:root[data-theme=light]{color-scheme:light}:root[data-theme=dark]{color-scheme:dark;--color-bg: #202a33;--color-bg-alt: #252f38;--color-surface: #2b3640;--color-surface-alt: #26313a;--color-text: #e1e7eb;--color-text-strong: #eef2f4;--color-text-secondary: #c0cbd2;--color-muted: #adbac2;--color-muted-strong: #9eacb5;--color-border: #3c4852;--color-border-strong: #52616c;--color-input-bg: #242f38;--color-hover: #35424c;--color-accent: #8fc2df;--color-accent-strong: #b1d8eb;--color-accent-hover: #c5e4f2;--color-accent-soft: #344955;--color-accent-border: #607f90;--color-link: #8fc7e5;--color-focus: #83c5e7;--color-on-accent: #17232b;--color-on-brand: #ffffff;--color-brand-bg: #173b55;--color-disabled: #64737d;--color-danger: #f0a39b;--color-danger-strong: #d9756c;--color-danger-action: #c34f45;--color-danger-action-hover: #d15d53;--color-danger-action-text: #ffffff;--color-danger-soft: #493433;--color-danger-border: #805550;--color-warning: #e9c477;--color-warning-soft: #493f2d;--color-warning-border: #756344;--color-success: #80c7a6;--color-success-text: #9bd6b9;--color-success-soft: #31483e;--color-info-soft: #304451;--color-info-border: #526e7e;--color-spinner-track: rgba(225, 231, 235, .38);--color-unread: #303e48;--color-normal-dark-border: #596873;--color-normal-dark-text: #d1d9de;--color-normal-dark-bg: #394650;--color-info-dark-text: #b2d8ec;--color-warning-dark-text: #f0d391;--color-critical-dark-text: #f3b3ac;--color-critical-dark-bg: #503735;--shadow-card: 0 8px 28px rgba(0, 0, 0, .2)}html{font-size:var(--font-scale, 112.5%)}*{box-sizing:border-box}body{min-width:320px;min-height:100vh;margin:0;background:var(--color-bg);color:var(--color-text)}button,input,select{font:inherit}input,select{color:var(--color-text);background-color:var(--color-input-bg)}button,a{-webkit-tap-highlight-color:transparent}button,a{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--color-focus);outline-offset:3px}.app-page{min-height:100vh}.app-header{min-height:4.5rem;display:flex;align-items:center;justify-content:space-between;padding:0 32px;background:var(--color-surface);border-bottom:1px solid var(--color-border)}.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none}.brand-mark,.login-brand-mark{display:grid;place-items:center;color:var(--color-on-brand);background:var(--color-brand-bg)}.brand-mark{width:38px;height:38px;border-radius:11px}.brand-mark svg,.unread-summary svg,.login-brand-mark svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.brand-copy{display:flex;flex-direction:column;gap:1px}.brand-copy strong{font-size:.875rem;letter-spacing:.01em}.brand-copy small{color:var(--color-muted);font-size:.6875rem}.header-actions{position:relative;display:flex;align-items:center;gap:22px}.mobile-header-actions{display:none}.connection-indicator{display:inline-flex;align-items:center;gap:7px;color:var(--color-text-secondary);font-size:.75rem}.connection-indicator i{width:7px;height:7px;border-radius:50%;background:var(--color-muted-strong)}.connection--live i{background:var(--color-success)}.connection--reconnecting i{background:var(--color-warning)}.unread-summary{min-width:28px;height:32px;position:relative;display:inline-flex;align-items:center;justify-content:center;color:var(--color-text-secondary);text-decoration:none}.unread-summary svg{width:20px;height:20px}.unread-summary strong{min-width:17px;height:17px;position:absolute;top:-2px;right:-9px;display:grid;place-items:center;padding:0 4px;border-radius:10px;color:var(--color-on-accent);background:var(--color-danger-strong);font-size:.625rem;line-height:1}.user-name{max-width:170px;overflow:hidden;color:var(--color-text-secondary);text-overflow:ellipsis;white-space:nowrap}.text-button{padding:7px 8px;border:0;border-radius:6px;color:var(--color-accent);background:transparent;font-size:.75rem;font-weight:600;cursor:pointer}.text-button:hover:not(:disabled){background:var(--color-hover)}.text-button:disabled{color:var(--color-disabled);cursor:default}.sign-out{color:var(--color-text-secondary)}.notification-settings-link,.important-settings-link,.admin-settings-link{white-space:nowrap}.visually-hidden{width:1px;height:1px;position:absolute;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;clip-path:inset(50%)}.workspace{max-width:1440px;min-height:calc(100vh - 4.5rem);display:grid;grid-template-columns:15.625rem minmax(0,1fr);margin:0 auto}.channel-sidebar{padding:31px 18px 24px 24px;border-right:1px solid var(--color-border);background:var(--color-surface-alt)}.sidebar-heading{display:flex;align-items:center;justify-content:space-between;padding:0 11px 12px;color:var(--color-muted);font-size:.6875rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase}.channel-total{color:var(--color-muted);font-size:.6875rem;font-weight:500;letter-spacing:0}.channel-nav{display:grid;gap:3px}.channel-link{width:100%;min-height:39px;display:flex;align-items:center;justify-content:space-between;padding:0 11px;border:0;border-radius:6px;background:transparent;text-align:left;cursor:pointer}.channel-link:hover{background:var(--color-hover)}.channel-link.is-active{color:var(--color-accent-strong);background:var(--color-accent-soft);font-weight:600}.channel-name{min-width:0;display:flex;align-items:center;gap:10px;overflow-wrap:anywhere}.channel-glyph{width:15px;color:var(--color-muted-strong);font-size:.875rem;text-align:center}.channel-link.is-active .channel-glyph{color:var(--color-accent)}.channel-count{min-width:22px;height:20px;display:grid;place-items:center;padding:0 6px;border-radius:11px;color:var(--color-on-accent);background:var(--color-accent);font-size:.625rem;font-weight:600}.channel-count--zero{color:var(--color-muted);background:transparent}.sidebar-empty{padding:4px 11px;color:var(--color-muted);font-size:.75rem}.sidebar-note{display:flex;gap:9px;margin:30px 6px 0;padding:12px 10px;border-top:1px solid var(--color-border);color:var(--color-text-secondary);font-size:.6875rem;line-height:1.6}.sidebar-note>span{flex:0 0 auto;width:16px;height:16px;display:grid;place-items:center;margin-top:1px;border:1px solid var(--color-border-strong);border-radius:50%;font-size:.625rem}.sidebar-note p{margin:0}.message-area{width:100%;max-width:1050px;margin:0 auto;padding:40px 54px 64px}.message-toolbar{display:flex;align-items:center;justify-content:flex-end;gap:20px;margin-bottom:22px}.eyebrow{margin:0 0 8px;color:var(--color-muted);font-size:.625rem;font-weight:700;letter-spacing:.12em}.toolbar-actions{display:flex;align-items:center;gap:10px}.severity-filter{display:inline-flex;align-items:stretch;overflow:hidden;border:1px solid var(--color-border-strong);border-radius:7px;background:var(--color-surface)}.severity-filter-option{min-width:50px;min-height:40px;padding:6px 10px;border:0;color:var(--color-text-secondary);background:transparent;font-size:.75rem;font-weight:600;cursor:pointer}.severity-filter-option+.severity-filter-option{border-left:1px solid var(--color-border)}.severity-filter-option.is-active{color:var(--color-accent-strong);background:var(--color-accent-soft)}.severity-filter-option:disabled{color:var(--color-disabled);cursor:default}.unread-toggle{display:inline-flex;align-items:center;gap:7px;padding:7px 8px;color:var(--color-text-secondary);font-size:.75rem;cursor:pointer}.unread-toggle input{width:14px;height:14px;margin:0;accent-color:var(--color-accent)}.bulk-actions{display:flex;align-items:center;gap:4px}.bulk-action{min-height:40px;padding:7px 9px;white-space:nowrap}.inline-message{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:12px 0;padding:12px 15px;border:1px solid var(--color-danger-border);border-radius:7px;background:var(--color-danger-soft);font-size:.8125rem}.inline-message--error{color:var(--color-danger)}.message-list{display:grid;border-top:1px solid var(--color-border)}.message-pagination{display:flex;align-items:center;justify-content:center;gap:16px;padding:14px 0;color:var(--color-text-secondary);font-size:.75rem}.message-pagination button{min-height:44px}.message-row-container{min-width:0;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:stretch;border-bottom:1px solid var(--color-border)}.message-row{min-height:104px;display:grid;grid-template-columns:12px minmax(0,1fr) 14px;align-items:center;gap:15px;padding:18px 11px 17px 12px;border-bottom:1px solid var(--color-border);background:transparent;text-decoration:none;transition:background-color .12s ease}.message-row-container .message-row{min-width:0;border-bottom:0;transition:background-color .12s ease,transform .18s ease;touch-action:pan-y}.message-row:hover{background:var(--color-hover)}.message-row--unread{background:var(--color-unread)}.unread-mark{width:8px;height:8px;align-self:start;margin-top:7px;border-radius:50%;background:var(--color-accent)}.unread-mark--seen{background:transparent}.message-row-main{min-width:0}.message-row-heading{display:flex;align-items:flex-start;gap:6px 10px}.message-title-line{min-width:0;flex:1 1 auto;display:flex;align-items:flex-start;gap:7px}.message-row-heading h2{min-width:0;flex:1 1 auto;margin:0;color:var(--color-text);font-size:.875rem;font-weight:600;overflow-wrap:anywhere}.message-favorite-mark{width:15px;height:15px;flex:0 0 auto;fill:var(--color-warning);stroke:var(--color-warning);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.message-row--unread .message-row-heading h2{color:var(--color-accent-strong)}.message-row--unread{border-left:3px solid var(--color-accent)}.severity-badge{min-height:21px;display:inline-flex;flex:0 0 auto;align-items:center;gap:4px;padding:2px 7px;border:1px solid transparent;border-radius:4px;font-size:.625rem;font-weight:600;line-height:1.4;white-space:nowrap}.severity-symbol{min-width:9px;font-size:.625rem;font-weight:700;text-align:center}.severity--normal{border-color:var(--color-border);color:var(--color-text-secondary);background:var(--color-surface-alt)}.severity--info{border-color:var(--color-info-border);color:var(--color-accent);background:var(--color-info-soft)}.severity--warning{border-color:var(--color-warning-border);color:var(--color-warning);background:var(--color-warning-soft)}.severity--critical{border-color:var(--color-danger-border);color:var(--color-danger);background:var(--color-danger-soft)}:root[data-theme=dark] .severity--normal{border-color:var(--color-normal-dark-border);color:var(--color-normal-dark-text);background:var(--color-normal-dark-bg)}:root[data-theme=dark] .severity--info{border-color:var(--color-info-border);color:var(--color-info-dark-text);background:var(--color-info-soft)}:root[data-theme=dark] .severity--warning{border-color:var(--color-warning-border);color:var(--color-warning-dark-text);background:var(--color-warning-soft)}:root[data-theme=dark] .severity--critical{border-color:var(--color-danger-border);color:var(--color-critical-dark-text);background:var(--color-critical-dark-bg)}.message-excerpt{display:-webkit-box;overflow:hidden;margin:7px 0 10px;color:var(--color-text-secondary);font-size:.75rem;line-height:1.3;-webkit-box-orient:vertical;-webkit-line-clamp:4;line-clamp:4;white-space:pre-line;overflow-wrap:anywhere}.message-meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px;color:var(--color-text-secondary);font-size:.6875rem}.message-meta>*{min-width:0;overflow-wrap:anywhere}.meta-channel{color:var(--color-accent);font-weight:600}.acknowledged-tag{color:var(--color-success)}.row-chevron{color:var(--color-muted);font-size:1.375rem;line-height:1;text-align:right}.mobile-delete-action,.mobile-favorite-action{display:none}.desktop-delete-action{min-width:76px;align-self:center;margin:0 12px;padding:.55em .75em;border:1px solid var(--color-danger-border);border-radius:6px;color:var(--color-danger);background:var(--color-danger-soft);font-size:.75rem;font-weight:600;cursor:pointer}.desktop-delete-action:hover:not(:disabled){border-color:var(--color-danger);background:var(--color-danger-soft)}.desktop-delete-action:disabled{opacity:.65;cursor:default}.message-state{min-height:270px;display:flex;align-items:center;justify-content:center;gap:10px;color:var(--color-muted);font-size:.8125rem}.empty-state{flex-direction:column;gap:4px;text-align:center}.empty-mark{width:48px;height:48px;display:grid;place-items:center;margin-bottom:9px;border:1px solid var(--color-border);border-radius:50%;color:var(--color-success);background:var(--color-success-soft);font-size:1.3125rem}.empty-state h2{margin:0;color:var(--color-text-strong);font-size:.9375rem;font-weight:600}.empty-state p{margin:3px 0;color:var(--color-muted);font-size:.75rem}.loading-spinner,.button-spinner{width:16px;height:16px;display:inline-block;border:2px solid var(--color-border);border-top-color:var(--color-accent);border-radius:50%;animation:spin .8s linear infinite}.button-spinner{width:14px;height:14px;border-color:var(--color-spinner-track);border-top-color:var(--color-on-accent);vertical-align:-2px}.refresh-status{padding:10px;color:var(--color-muted);font-size:.6875rem;text-align:center}@keyframes spin{to{transform:rotate(360deg)}}.primary-button{min-height:2.625rem;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:.45em 1.05em;border:1px solid var(--color-accent-strong);border-radius:6px;color:var(--color-on-accent);background:var(--color-accent-strong);font-weight:600;line-height:1.35;cursor:pointer}.primary-button:hover:not(:disabled){background:var(--color-accent-hover)}.primary-button:disabled{border-color:var(--color-disabled);color:var(--color-text-secondary);background:var(--color-bg-alt);cursor:default}.login-page{min-height:100vh;display:grid;place-items:center;padding:24px;background:var(--color-bg-alt)}.login-card{width:min(100%,410px);padding:42px 42px 29px;border:1px solid var(--color-border);border-radius:10px;background:var(--color-surface);box-shadow:var(--shadow-card)}.login-brand-mark{width:46px;height:46px;margin-bottom:27px;border-radius:13px}.login-brand-mark svg{width:24px;height:24px}.login-card .eyebrow{margin-bottom:8px}.login-card h1{margin:0;color:var(--color-text-strong);font-size:1.4375rem;font-weight:600}.login-intro{margin:9px 0 27px;color:var(--color-text-secondary);font-size:.8125rem;line-height:1.6}.login-form{display:grid;gap:8px}.login-form label{margin-top:5px;color:var(--color-text-strong);font-size:.75rem;font-weight:600}.login-form input{width:100%;min-height:2.6875rem;padding:.5em .75em;border:1px solid var(--color-border-strong);border-radius:5px;color:var(--color-text-strong);background:var(--color-input-bg)}.login-form input:focus{border-color:var(--color-accent);outline:3px solid color-mix(in srgb,var(--color-focus) 25%,transparent)}.login-form input:disabled{background:var(--color-bg-alt)}.form-error{margin:5px 0 1px;color:var(--color-danger);font-size:.75rem}.login-submit{width:100%;margin-top:12px}.login-footnote{margin:24px 0 0;color:var(--color-muted);font-size:.625rem;text-align:center}.detail-page{width:min(100% - 56px,920px);margin:0 auto;padding:31px 0 60px}.back-link{display:inline-flex;align-items:center;gap:8px;margin:0 0 19px;color:var(--color-accent);font-size:.75rem;font-weight:600;text-decoration:none}.back-link:hover{color:var(--color-accent-hover)}.back-link span{font-size:1.0625rem;line-height:1}.detail-card{padding:30px 34px 26px;border:1px solid var(--color-border);border-radius:8px;background:var(--color-surface)}.detail-topline{display:flex;align-items:center;gap:10px}.detail-channel{color:var(--color-accent);font-size:.75rem;font-weight:600}.detail-card h1{margin:13px 0 5px;color:var(--color-text-strong);font-size:1.5rem;font-weight:600;line-height:1.4}.detail-created-at{margin:0;padding-bottom:18px;border-bottom:1px solid var(--color-border);color:var(--color-text-secondary);font-size:.8125rem}.detail-content{padding:23px 0 25px;color:var(--color-text);font-size:1.08rem;line-height:1.7;white-space:pre-wrap;overflow-wrap:anywhere}.detail-content a{color:var(--color-link);overflow-wrap:anywhere}.detail-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px 22px;margin:0;padding:18px 0;border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border)}.detail-fields div{min-width:0}.detail-fields dt{margin-bottom:5px;color:var(--color-text-secondary);font-size:.6875rem}.detail-fields dd{overflow-wrap:anywhere;margin:0;color:var(--color-text);font-size:.8125rem}.detail-fields a,.login-display-settings,.detail-state .text-button{color:var(--color-link)}.login-form input::placeholder{color:var(--color-muted);opacity:1}.login-form input:-webkit-autofill,.login-form input:-webkit-autofill:hover,.login-form input:-webkit-autofill:focus{-webkit-text-fill-color:var(--color-text-strong);box-shadow:0 0 0 1000px var(--color-input-bg) inset;transition:background-color 9999s ease-out}.data-section{margin-top:20px}.data-section h2{margin:0 0 9px;color:var(--color-text-secondary);font-size:.75rem;font-weight:600}.data-section pre{max-height:360px;overflow:auto;margin:0;padding:14px;border:1px solid var(--color-border);border-radius:5px;color:var(--color-text-secondary);background:var(--color-surface-alt);font:.6875rem/1.6 ui-monospace,SFMono-Regular,Consolas,monospace;white-space:pre-wrap;overflow-wrap:anywhere}.detail-actions{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-top:20px}.detail-actions p{margin:0;color:var(--color-muted);font-size:.6875rem}.detail-primary-action{min-width:0;display:flex;align-items:center;gap:14px}.detail-favorite-button{min-height:42px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:.45em .8em;white-space:nowrap}.detail-favorite-button svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.detail-favorite-button[aria-pressed=true] svg{fill:var(--color-warning);stroke:var(--color-warning)}.detail-primary-action .acknowledged-confirmation{margin:0}.detail-delete-button{min-height:2.625rem;padding:.45em 1.05em;border:1px solid var(--color-danger-border);border-radius:6px;color:var(--color-danger);background:var(--color-danger-soft);font-weight:600;cursor:pointer}.detail-delete-button:hover:not(:disabled){border-color:var(--color-danger)}.detail-delete-button:disabled{opacity:.65;cursor:default}.secondary-button,.danger-button{min-height:2.625rem;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:.45em 1em;border-radius:6px;font-weight:600;cursor:pointer}.secondary-button{border:1px solid var(--color-border-strong);color:var(--color-text);background:var(--color-surface)}.secondary-button:hover:not(:disabled){background:var(--color-hover)}.danger-button{border:1px solid 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span{width:21px;height:21px;display:grid;place-items:center;border-radius:50%;background:var(--color-success-soft)}.detail-state{min-height:230px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--color-text-secondary);text-align:center}.detail-state p{margin:0}.detail-state .text-button{color:var(--color-accent);text-decoration:none}.push-settings-page{width:min(100% - 56px,760px);margin:0 auto;padding:31px 0 60px}.push-settings-card{padding:30px 34px 26px;border:1px solid var(--color-border);border-radius:8px;background:var(--color-surface)}.push-settings-card h1{margin:0 0 25px;color:var(--color-text-strong);font-size:1.5rem;font-weight:600}.important-settings-page{width:min(100% - 56px,560px);margin:0 auto;padding:31px 0 60px}.important-settings-card{padding:28px 30px 26px;border:1px solid var(--color-border);border-radius:8px;background:var(--color-surface)}.important-settings-card h1{margin:0 0 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