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12px;padding-inline-end:44px;display:flex}.ad-main:hover{text-decoration:none}.ad-img{border-radius:var(--r-sm);object-fit:cover;flex:none;width:44px;height:44px}.ad-text{flex-direction:column;gap:2px;min-width:0;display:flex}.ad-top{font-size:var(--fs-caption);line-height:var(--lh-caption);color:var(--c-text-3);align-items:center;gap:8px;display:flex}.ad-title{font-weight:600;font-size:var(--fs-label);line-height:var(--lh-label);text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.ad-body{font-size:var(--fs-caption);line-height:var(--lh-caption);color:var(--c-text-2);-webkit-line-clamp:2;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.ad-compact .ad-main{min-height:40px;padding-block:6px}.ad-why{inset-inline-end:6px;width:32px;height:32px;color:var(--c-text-3);position:absolute;top:50%;translate:0 -50%}.ad-why-pop{font-size:var(--fs-caption);color:var(--c-text-2);margin:0 12px 10px;line-height:1.55}.badge{white-space:nowrap;border-radius:6px;align-items:center;gap:3px;height:20px;padding-inline:7px;font-size:12px;font-weight:600;display:inline-flex}.badge-sponsored{background:var(--c-sponsor-tint);color:var(--c-sponsor)}.badge-pin{background:var(--c-accent-tint);color:var(--c-accent-text)}.tabs-wrap{padding:0 var(--gutter) 8px;flex:none}.tabs{border-radius:var(--r-md);background:var(--c-sunken);grid-template-columns:repeat(3,1fr);padding:4px;display:grid;position:relative}.tab{z-index:1;height:calc(var(--h-tab) - 8px);font-size:var(--fs-label);color:var(--c-text-2);transition:color var(--dur-base) var(--ease-standard);white-space:nowrap;justify-content:center;align-items:center;gap:6px;font-weight:500;display:inline-flex;position:relative}.tab.on{color:var(--c-text-1);font-weight:600}.tab-n{color:var(--c-text-3);font-size:11px;font-weight:600}.tabs[data-i="0"] .tab-ink{background:var(--tab-0)}.tabs[data-i="1"] .tab-ink{background:var(--tab-1)}.tabs[data-i="2"] .tab-ink{background:var(--tab-2)}.tabs[data-i="3"] .tab-ink{background:var(--tab-3)}.tab-ink{width:calc(33.3333% - 2.66667px);top:4px;bottom:4px;background:var(--c-surface);box-shadow:var(--shadow-1), var(--highlight-top);transition:inset-inline-start var(--dur-slow) var(--ease-spring);border-radius:9px;position:absolute;inset-inline-start:calc(4px + var(--i) * ((100% - 8px) / 3))}.views{flex:1;min-height:0;position:relative}.view{animation:viewIn var(--dur-base) var(--ease-enter);flex-direction:column;display:flex;position:absolute;inset:0}@keyframes viewIn{0%{opacity:0}}.banner{margin:0 var(--gutter) 6px;border-radius:var(--r-md);background:var(--c-surface);border:1px solid var(--c-border);color:var(--c-text-2);font-size:var(--fs-caption);text-align:center;flex:none;padding:6px 12px;font-weight:600}.msgs{overscroll-behavior:contain;padding:4px var(--gutter) 8px;scrollbar-width:thin;flex-direction:column;flex:1;display:flex;overflow-y:auto}.msgs>:first-child{margin-top:auto}.msg{flex:none;gap:10px;margin-top:12px;display:flex;position:relative}.msg.grouped{margin-top:2px;padding-inline-start:38px}.msg.anim{animation:msgIn .16s var(--ease-enter)}@keyframes msgIn{0%{opacity:0;transform:translateY(6px)}}.msg-main{flex:1;min-width:0}.msg-meta{align-items:baseline;gap:8px;display:flex}.msg-name{font-weight:600;font-size:var(--fs-label);line-height:var(--lh-label)}.msg-time{font-size:var(--fs-caption);color:var(--c-text-3)}.msg-body{font-size:var(--fs-body);line-height:var(--lh-body);overflow-wrap:anywhere;text-align:start;unicode-bidi:plaintext}.msg.mine,.msg.mine.grouped{justify-content:flex-end;padding-inline-start:48px}.msg.mine .msg-main{flex-direction:column;flex:none;align-items:flex-end;max-width:100%;display:flex}.msg.mine .msg-body{background:var(--c-accent-tint);border-radius:var(--r-lg);border-end-end-radius:var(--r-xs);padding:7px 12px}.msg.mine .msg-meta{display:none}.msg-stamp{color:var(--c-text-3);align-items:center;gap:4px;margin-top:2px;font-size:11px;line-height:16px;display:inline-flex}.msg.pending .msg-body{opacity:.6}.msg-fail{font-size:var(--fs-caption);color:var(--c-danger);flex-wrap:wrap;align-items:center;gap:8px;margin-top:3px;display:flex}.msg-more{inset-inline-end:-6px;opacity:0;background:var(--c-surface);width:30px;height:30px;box-shadow:var(--shadow-2);border-radius:var(--r-md);position:absolute;top:-6px}.msg:not(.mine):hover .msg-more,.msg-more:focus-visible{opacity:1}@media (hover:none){.msg-more{display:none}}.msgs.dense .msg:not(.mine){margin-top:6px}.msgs.dense .msg:not(.mine).grouped{margin-top:2px;padding-inline-start:0}.msgs.dense .msg:not(.mine) .msg-main{display:block}.msgs.dense .msg:not(.mine) .msg-meta{margin-inline-end:6px;display:inline-flex}.msgs.dense .msg:not(.mine) .msg-body{display:inline}.msgs.dense .msg:not(.mine) .msg-time{display:none}.new-pill{bottom:calc(96px + var(--sab));border-radius:var(--r-pill);background:var(--c-inverse);color:var(--c-on-inverse);font-size:var(--fs-label);box-shadow:var(--shadow-2);z-index:3;animation:msgIn var(--dur-base) var(--ease-enter);align-items:center;gap:6px;padding:6px 14px;font-weight:600;display:inline-flex;position:absolute;left:50%;translate:-50%}.composer{padding:6px var(--gutter) calc(10px + var(--sab));background:var(--c-panel);flex:none}.composer-to{font-size:var(--fs-caption);line-height:var(--lh-caption);color:var(--c-text-3);padding:0 8px 6px}.composer-to strong{color:var(--c-text-2);font-weight:600}.composer-row{background:var(--c-surface);border:1px solid var(--c-border-strong);transition:box-shadow var(--dur-fast) var(--ease-standard), border-color var(--dur-fast) var(--ease-standard);border-radius:24px;align-items:flex-end;gap:4px;padding:4px;display:flex}.composer-row:focus-within{border-color:var(--c-focus);box-shadow:0 0 0 3px color-mix(in srgb, var(--c-focus) 22%, transparent)}.composer-plus{width:36px;height:36px;color:var(--c-text-2);transition:background var(--dur-fast) var(--ease-standard);border-radius:50%;flex:none;place-items:center;display:grid}.composer-plus:hover{background:var(--c-sunken);color:var(--c-text-1)}.composer .input{box-shadow:none;background:0 0;border:0;border-radius:0;min-height:36px;padding:6px 4px;line-height:24px}.input{width:100%;font:inherit;color:var(--c-text-1);background:var(--c-surface);border:1px solid var(--c-border-strong);border-radius:var(--r-md);resize:none;transition:border-color var(--dur-fast) var(--ease-standard), box-shadow var(--dur-fast) var(--ease-standard);unicode-bidi:plaintext;padding:10px 14px;font-size:16px;line-height:24px}textarea.input{max-height:140px;display:block}.input::placeholder{color:var(--c-text-3)}.input:focus{border-color:var(--c-focus);box-shadow:0 0 0 3px color-mix(in srgb, var(--c-focus) 22%, 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.icon-btn{width:24px;height:24px;margin-inline-start:auto}.btn{height:var(--h-control);border-radius:var(--r-md);font-weight:600;font-size:var(--fs-label);white-space:nowrap;transition:background var(--dur-fast) var(--ease-standard), transform var(--dur-instant) var(--ease-standard), color var(--dur-fast) var(--ease-standard);justify-content:center;align-items:center;gap:8px;padding-inline:18px;display:inline-flex}.btn:active:not(:disabled){transform:scale(.98)}.btn:disabled{background:var(--c-sunken);color:var(--c-text-3);box-shadow:none;border-color:#0000}.btn-primary{background:var(--c-cta);color:var(--c-on-cta);box-shadow:0 3px 0 var(--c-cta-pressed)}.btn-primary:hover:not(:disabled){background:var(--c-cta-hover)}.btn-primary:active:not(:disabled){background:var(--c-cta-pressed);box-shadow:0 0 0 var(--c-cta-pressed);translate:0 3px}.btn-secondary{background:var(--c-surface);color:var(--c-text-1);border:1px solid var(--c-border-strong)}.btn-secondary:hover:not(:disabled){background:var(--c-sunken)}.btn-ghost{color:var(--c-accent-text)}.btn-ghost:hover:not(:disabled){background:var(--c-sunken)}.btn-danger{background:var(--c-danger);color:var(--c-on-danger)}.btn-sm{height:var(--h-control-sm);font-size:var(--fs-caption);padding-inline:14px}.btn-block{width:100%}.btn-lg{border-radius:14px;height:52px;font-size:16px}.link{color:var(--c-accent-text);font-weight:600;font-size:var(--fs-label);align-items:center;gap:4px;display:inline-flex}.link.danger{color:var(--c-danger)}.center{text-align:center;justify-content:center;margin-inline:auto;display:flex}.list-head{padding:0 var(--gutter) 8px;flex:none;display:flex}.seg{background:var(--c-sunken);border-radius:var(--r-md);gap:2px;padding:3px;display:inline-flex}.seg button{height:28px;font-size:var(--fs-label);color:var(--c-text-2);white-space:nowrap;transition:background var(--dur-base) 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var(--shadow-1)}.card.is-pinned:before{content:"";background:var(--c-accent);border-end-end-radius:4px;border-end-start-radius:4px;width:44px;height:4px;position:absolute;top:0;left:50%;translate:-50%}.cb{gap:10px;display:flex}.cb-main{flex:1;min-width:0}.cb-meta{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.cb-name{font-weight:600;font-size:var(--fs-label);line-height:var(--lh-label)}.cb-time{font-size:var(--fs-caption);color:var(--c-text-3)}.cb-text{overflow-wrap:anywhere;white-space:pre-wrap;text-align:start;unicode-bidi:plaintext;margin-top:2px}.cb-actions{margin-top:2px;gap:2px;margin-inline-start:-10px;display:flex}.act{border-radius:var(--r-md);height:36px;color:var(--c-text-3);font-size:var(--fs-caption);transition:color var(--dur-fast) var(--ease-standard), background var(--dur-fast) var(--ease-standard);align-items:center;gap:5px;padding-inline:10px;font-weight:600;display:inline-flex}.act:hover{background:var(--c-sunken);color:var(--c-text-2)}.act.liked{color:var(--c-accent-text)}.act.liked .ic{animation:pop .42s var(--ease-reward)}@keyframes pop{0%{transform:scale(1)}40%{transform:scale(1.25)}to{transform:scale(1)}}.act-more{margin-inline-start:auto}.thread{margin-top:4px;border-inline-start:2px solid var(--c-border);flex-direction:column;gap:4px;margin-inline-start:16px;padding-inline-start:24px;display:flex}.thread-more{align-self:flex-start;padding-bottom:8px}.more-btn{margin:8px auto;display:flex}.view-media{padding:0 var(--gutter) 12px;overflow-y:auto;container-type:inline-size}.grid{border-radius:var(--r-lg);grid-template-columns:repeat(3,1fr);gap:2px;display:grid;overflow:hidden}@container (width<=300px){.grid{grid-template-columns:repeat(2,1fr)}}.tile{aspect-ratio:1;background:var(--c-sunken);position:relative;overflow:hidden}.tile 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24px;display:flex}.state-ic{background:var(--c-surface);width:52px;height:52px;box-shadow:var(--shadow-1);color:var(--c-text-2);border-radius:50%;place-items:center;margin-bottom:6px;display:grid}.brand-mark{width:64px;height:64px;margin-bottom:8px}.demo-url{width:100%;max-width:440px;margin-top:14px}.gobar{align-items:center;gap:8px;width:100%;display:flex;position:relative}.gobar .input{padding-inline-start:36px}.gobar.compact{margin-top:8px}.gobar.compact .input{border-radius:var(--r-lg);min-height:36px;padding-block:6px;font-size:15px}.gobar-ic{inset-inline-start:12px;color:var(--c-text-3);pointer-events:none;display:grid;position:absolute;top:50%;transform:translateY(-50%)}.gobar.compact .gobar-ic{top:18px}.gobar-note{font-size:var(--fs-caption);color:var(--c-text-2);flex-basis:100%;margin-top:-2px;line-height:1.5}.gobar.compact .btn{flex:none}.intro{margin:0 var(--gutter) 10px;border-radius:var(--r-lg);background:var(--c-surface);box-shadow:var(--shadow-1);grid-template-columns:1fr auto;align-items:center;column-gap:12px;padding:12px 14px;display:grid}.intro-title{font-family:var(--font-display);font-size:17px;line-height:24px}.intro-sub{font-size:var(--fs-caption);color:var(--c-text-2);grid-column:1;line-height:1.55}.intro .link{grid-area:1/2/span 2}.skel-wrap{padding:16px var(--gutter);flex-direction:column;flex:1;gap:18px;display:flex}.skel-row{gap:10px;display:flex}.skel{background:var(--c-skeleton);border-radius:5px;height:10px;animation:1.2s ease-in-out infinite alternate skel;display:block}.skel-av{border-radius:50%;flex:none;width:28px;height:28px}.skel-lines{flex-direction:column;flex:1;gap:8px;padding-top:3px;display:flex}@keyframes skel{0%{opacity:1}to{opacity:.55}}.toast{top:38px;inset-inline:var(--gutter);border-radius:var(--r-md);background:var(--c-inverse);max-width:440px;color:var(--c-on-inverse);font-size:var(--fs-label);box-shadow:var(--shadow-3);z-index:60;animation:toastIn var(--dur-base) var(--ease-enter);align-items:center;gap:12px;margin-inline:auto;padding:11px 16px;display:flex;position:absolute}.toast-err{background:var(--c-danger);color:var(--c-on-danger)}.toast-act{color:var(--c-inverse-accent);white-space:nowrap;margin-inline-start:auto;font-weight:600}.toast-err .toast-act{color:inherit;text-decoration:underline}@keyframes toastIn{0%{opacity:0;transform:translateY(-8px)}}.scrim{z-index:50;background:var(--c-scrim);animation:fade var(--dur-fast) var(--ease-standard);justify-content:center;align-items:flex-end;padding:8px;display:flex;position:absolute;inset:0}@keyframes fade{0%{opacity:0}}.sheet{background:var(--c-raised);border-radius:var(--r-xl);width:100%;max-width:520px;max-height:calc(100% 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var(--pane-border);inset-inline:0;grid-template-columns:repeat(4,1fr);display:grid;position:fixed;bottom:0}.cp-bar-btn{color:var(--c-text-3);transition:color var(--dur-fast), background var(--dur-fast);border-radius:12px;flex-direction:column;align-items:center;gap:2px;padding:6px 0;font-size:11px;display:flex}.cp-bar-btn.on{color:var(--c-accent-text)}.cp-bar-btn:disabled{opacity:.4}.cp-bar-btn:active{background:var(--c-raised)}.cp-reading .cp-bar,.mode-campus .mc-top .me-btn,.mode-campus .mc-top .mc-follows-wrap{display:none}.mode-campus .mc-top{flex-wrap:nowrap}.mode-campus .mc-crumb{flex:1;gap:6px;font-size:12px}}.mc .scrim{z-index:80}.mc .toast{z-index:90;position:fixed}:root[data-app=student]{--lightningcss-light:initial;--lightningcss-dark: 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#0000;--cp-glow:#2f63e61f;--cp-glow-2:#0e91551a;--cp-exam:#b8640a;--cp-exam-tint:#f2a64a24;--cp-trust:#1f8a6c;--cp-trust-tint:#1f8a6c14;--cp-paper:#fff;--cp-ink:#1c1a22;--cp-mark:#f2c85a80;--st-warm:#f07a2a;--st-warm-tint:#fff1e8}:root[data-app],:root[data-app] body{height:auto;min-height:100%}:root[data-app] body{background:var(--c-panel);overflow-y:auto}:root[data-app] #app{height:auto;min-height:100vh}.st.mc{background:var(--c-panel);flex-direction:column;min-height:100vh;display:flex}.st .doc-kind.summary{color:#1f6b43;background:#e3f4ea}.st .cp-card.k-summary{border-inline-start-color:#3fb27a}.st .cp-tree-name.on,.st .cp-dir-fac.on{background:var(--c-accent-tint)}.st .cp-strip{top:60px}.st .cp-dirpane,.st .cp-side{top:108px}.st .cp-hero{background:radial-gradient(900px 260px at 85% -20%, var(--cp-glow), transparent 70%), radial-gradient(600px 200px at 10% 120%, var(--st-warm-tint), transparent 70%)}.st .cp-cta-btn{background:linear-gradient(135deg, var(--st-warm), #d9621a);box-shadow:0 8px 22px -8px var(--st-warm)}.st .cp-cta-btn:hover{box-shadow:0 14px 28px -10px var(--st-warm)}.st .cp-quota{direction:rtl}.st .avatar{color:hsl(var(--h) 45% 30%);background:hsl(var(--h) 55% 88%)}.st .cp-pane,.st .pane{background:var(--pane)}.st .radar-total{color:var(--c-live-text)}.st .cp-editor,.st .cp-reader{background:var(--c-panel)}.st .cp-rd-pdf,.st .cp-rd-docx{border:1px solid var(--c-border);background:#fff;border-radius:14px;width:100%;height:78vh}.cp-rd-file{flex-direction:column;gap:8px;margin-bottom:18px;display:flex}.cp-rd-filebar{color:var(--c-text-3);align-items:center;gap:6px;font-size:12px;display:flex}.cp-rd-filetext{color:var(--c-text-3);border-top:1px solid var(--pane-border);margin:18px 0 6px;padding-top:12px;font-size:12px}.cp-rd-pdf,.cp-rd-docx{border:1px solid 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/*$vite$:1*/