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var(--ds-ease), color .16s var(--ds-ease), background .16s var(--ds-ease), transform .16s var(--ds-ease), box-shadow .16s var(--ds-ease);align-items:center;gap:7px;padding:6px 13px 6px 8px;font-size:13px;font-weight:500;display:inline-flex}.lp-point:hover{border-color:var(--ds-coral);color:var(--ds-coral-deep);box-shadow:var(--ds-shadow-sm);transform:translateY(-2px)}.lp-point .lp-check{border:1.5px solid var(--ds-line);color:#fff;width:16px;height:16px;transition:background .16s var(--ds-ease), border-color .16s var(--ds-ease);border-radius:50%;flex:none;place-items:center;display:grid}.lp-point.done{background:var(--lp-done-soft);border-color:var(--lp-done-line);color:var(--lp-done-deep)}.lp-point.done:hover{border-color:var(--lp-done);color:var(--lp-done-deep)}.lp-point.done .lp-check{background:var(--lp-done);border-color:var(--lp-done)}@media (width<=620px){.ds-scope.result-page{padding:0 0 48px}.ds-scope 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var(--ds-ease);flex:none;justify-content:center;align-items:center;display:inline-flex}.ds-scope .back-button:hover{border-color:var(--ds-coral);color:var(--ds-coral-deep);box-shadow:var(--ds-shadow);transform:translateY(-2px)}.ds-scope .ghost-button{border-radius:var(--ds-r-sm);border:1px solid var(--ds-line);background:var(--ds-surface);min-height:40px;color:var(--ds-ink);font-family:var(--ds-font);box-shadow:var(--ds-shadow-sm);transition:transform .2s var(--ds-ease), border-color .2s var(--ds-ease), color .2s var(--ds-ease), box-shadow .2s var(--ds-ease);align-items:center;gap:7px;padding:0 15px;font-size:13.5px;font-weight:700;display:inline-flex}.ds-scope .ghost-button:hover{border-color:var(--ds-blue);color:var(--ds-blue-deep);box-shadow:var(--ds-shadow);transform:translateY(-2px)}.ds-scope .ghost-button.compact{min-height:38px;padding:0 13px}.ds-scope 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var(--ds-ease);justify-content:center;align-items:center;padding:18px 18px 26px;display:flex;position:relative}.tf-card:hover{border-color:color-mix(in srgb, var(--tf-accent) 45%, var(--ds-line));transform:translateY(-8px);box-shadow:0 24px 44px -22px #1c2a4457}.tf-card.flip{background:var(--ds-navy-soft);border-color:color-mix(in srgb, var(--ds-blue) 30%, white)}.tf-card-text{color:var(--ds-ink);font-size:14.5px;font-weight:500;line-height:1.55}.tf-card-side{color:var(--ds-muted);font-size:10.5px;position:absolute;bottom:7px;left:0;right:0}.tf-del{color:var(--ds-muted);cursor:pointer;background:0 0;border:0;border-radius:8px;padding:4px;transition:color .15s,background .15s;position:absolute;top:7px;right:7px}.tf-del:hover{color:var(--ds-coral-deep);background:var(--ds-coral-soft)}.tf-del.static{position:static}.tf-bar{color:var(--ds-body);justify-content:space-between;align-items:center;font-size:13px;display:flex}.tf-check{cursor:pointer;align-items:center;gap:6px;display:inline-flex}.tf-check input{accent-color:var(--ds-coral)}.tf-words{flex-direction:column;gap:11px;margin:0;padding:0;list-style:none;display:flex}.tf-words li{border:1px solid var(--ds-line);border-radius:var(--ds-r-lg);background:var(--ds-surface);box-shadow:var(--ds-shadow-sm);transition:transform .25s var(--ds-ease), box-shadow .25s var(--ds-ease), border-color .25s var(--ds-ease);align-items:flex-start;gap:12px;padding:14px 16px;display:flex}.tf-words li:hover{border-color:color-mix(in srgb, var(--tf-accent) 40%, var(--ds-line));transform:translateY(-8px);box-shadow:0 24px 44px -22px #1c2a4457}.tf-words li.done{opacity:.62}.tf-word-toggle{cursor:pointer;background:0 0;border:0;flex:none;margin-top:2px;padding:0}.tf-word-mark{border:1.5px solid var(--ds-line);color:#fff;background:var(--ds-surface);border-radius:7px;place-items:center;width:19px;height:19px;transition:background .15s,border-color .15s;display:grid}.tf-words li.done .tf-word-mark{background:var(--ds-coral);border-color:var(--ds-coral)}.tf-word-body{flex:1;min-width:0}.tf-word-body strong{color:var(--ds-ink);font-size:15px;font-weight:700}.tf-word-mean{color:var(--ds-body);margin-left:6px;font-size:13.5px}.tf-word-eg{color:var(--ds-muted);margin:5px 0 0;font-size:12.5px;font-style:italic}.tf-eq-out{font-family:var(--ds-font);color:var(--ds-navy);background:var(--ds-navy-soft);border:1px solid color-mix(in srgb, var(--ds-blue) 22%, white);border-radius:var(--ds-r);text-align:center;letter-spacing:.02em;padding:17px 18px;font-size:18px;font-weight:600}.tf-timeline{flex-direction:column;display:flex}.tf-tl-item{align-items:center;gap:12px;padding:9px 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var(--ds-line);border-radius:var(--ds-r);width:100%;height:auto;box-shadow:var(--ds-shadow-sm)}.tf-graph-bg{fill:var(--ds-surface-2)}.tf-axis{stroke:var(--ds-muted);stroke-width:1px}.tf-curve{stroke:var(--tf-accent);stroke-width:2.5px;stroke-linejoin:round;stroke-linecap:round}.tf-axis-t{fill:var(--ds-muted);font-size:10px;font-family:var(--ds-font)}.tf-grade-input{resize:vertical;width:100%;min-height:120px;line-height:1.6}.tf-grade-out{white-space:pre-wrap;color:var(--ds-ink);background:var(--ds-surface-2);border:1px solid var(--ds-line);border-radius:var(--ds-r);padding:16px 18px;font-size:14px;line-height:1.78}.tf-wip-banner{color:var(--ds-muted);background:var(--ds-surface-2);border:1px dashed var(--ds-line);border-radius:var(--ds-r);align-items:center;gap:10px;margin-bottom:14px;padding:10px 14px;font-size:13px;line-height:1.6;display:flex}.tf-wip-banner 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var(--ds-ease), border-color .18s var(--ds-ease), color .18s var(--ds-ease), background .18s var(--ds-ease);flex:none;justify-content:center;align-items:center;display:inline-flex}.tc-scope .back-button:hover{border-color:var(--ds-coral);color:var(--ds-coral-deep);background:var(--ds-surface);box-shadow:var(--ds-shadow);transform:translateY(-2px)}.tc-scope .ghost-button,.tc-scope .ghost-button.compact{border:1px solid var(--ds-line);color:var(--ds-navy);background:var(--ds-surface);border-radius:var(--ds-r-sm);font-family:var(--ds-font);box-shadow:var(--ds-shadow-sm);transition:transform .18s var(--ds-ease), box-shadow .18s var(--ds-ease), border-color .18s var(--ds-ease), background .18s var(--ds-ease), color .18s var(--ds-ease);font-weight:700}.tc-scope .ghost-button:hover,.tc-scope .ghost-button.compact:hover{border-color:var(--ds-blue);color:var(--ds-blue);background:var(--ds-blue-soft);box-shadow:var(--ds-shadow);transform:translateY(-2px)}.tc-scope .icon-button.small{border:1px solid var(--ds-line);color:var(--ds-body);background:var(--ds-surface);transition:transform .15s var(--ds-ease), border-color .15s var(--ds-ease), color .15s var(--ds-ease);border-radius:8px}.tc-scope .icon-button.small:hover{border-color:var(--ds-coral);color:var(--ds-coral)}.tc-badge{font-family:var(--ds-font-display);border:1px solid;border-radius:50%;flex:none;place-items:center;font-size:17px;font-weight:700;display:inline-grid}.tc-pick{padding:8px 0 64px}.tc-group{margin-bottom:38px}.tc-group-name{font-family:var(--ds-font-display);color:var(--ds-navy);letter-spacing:.04em;align-items:center;gap:8px;margin:0 0 16px;font-size:16px;font-weight:700;display:inline-flex}.tc-group-name:before{content:"";background:var(--ds-coral);border-radius:2px;width:18px;height:3px}.tc-group-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px;display:grid}.tc-teacher{text-align:left;cursor:pointer;font-family:var(--ds-font);align-items:center;gap:14px;padding:18px 18px 18px 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28px;display:flex}.tc-messages{flex-direction:column;flex:1;gap:14px;max-height:calc(100vh - 250px);padding:8px 4px 16px;display:flex;overflow-y:auto}.tc-welcome{text-align:center;color:var(--ds-body);flex-direction:column;align-items:center;gap:8px;margin:auto;padding:44px 20px;display:flex}.tc-welcome strong{font-family:var(--ds-font-display);color:var(--ds-navy);max-width:440px;margin-top:10px;font-size:20px;font-weight:700;line-height:1.5}.tc-welcome p{max-width:380px;color:var(--ds-body);margin:0;line-height:1.75}.tc-welcome-hint{color:var(--ds-blue);background:var(--ds-blue-soft);border-radius:var(--ds-r-pill);padding:8px 14px;font-size:13.5px;font-weight:600;margin-top:4px!important}.tc-msg{align-items:flex-start;gap:10px;display:flex}.tc-msg.user{justify-content:flex-end}.tc-bubble{border-radius:var(--ds-r-lg);background:var(--ds-surface);border:1px solid var(--ds-line);max-width:78%;color:var(--ds-ink);box-shadow:var(--ds-shadow-sm);padding:13px 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var(--ds-coral);background:var(--ds-coral-soft);color:var(--ds-coral-deep);cursor:pointer;transition:transform .16s var(--ds-ease), box-shadow .16s var(--ds-ease), background .16s var(--ds-ease);align-items:center;gap:6px;padding:7px 14px;font-size:13px;font-weight:600;display:inline-flex}.tc-tool:hover{transform:translateY(-2px);box-shadow:0 8px 18px #ff5a3c2e}.tc-tool.soft{border-color:var(--ds-line);background:var(--ds-surface);color:var(--ds-body)}.tc-tool.soft:hover{border-color:var(--ds-blue);color:var(--ds-blue);background:var(--ds-blue-soft);box-shadow:var(--ds-shadow-sm)}.tc-input-row{background:var(--ds-surface-2);border:1px solid var(--ds-line);border-radius:var(--ds-r);transition:border-color .18s var(--ds-ease), box-shadow .18s var(--ds-ease), background .18s var(--ds-ease);align-items:flex-end;gap:10px;padding:6px 6px 6px 8px;display:flex}.tc-input-row:focus-within{border-color:var(--ds-blue);background:var(--ds-surface);box-shadow:0 0 0 3px var(--ds-blue-soft)}.tc-input-row textarea{resize:none;font-size:14.5px;font-family:var(--ds-font);max-height:140px;color:var(--ds-ink);background:0 0;border:0;flex:1;padding:8px 6px;line-height:1.6}.tc-input-row textarea::placeholder{color:var(--ds-muted)}.tc-input-row textarea:focus{outline:none}.tc-send{border-radius:var(--ds-r-sm);background:var(--ds-blue);color:#fff;cursor:pointer;width:44px;height:44px;transition:transform .15s var(--ds-ease), background .15s var(--ds-ease), opacity .15s var(--ds-ease), box-shadow .15s var(--ds-ease);border:0;flex:none;place-items:center;display:grid;box-shadow:0 6px 16px #2456d647}.tc-send:disabled{opacity:.45;cursor:not-allowed;box-shadow:none;background:var(--ds-muted)}.tc-send:not(:disabled):hover{background:var(--ds-blue-deep);transform:translateY(-2px);box-shadow:0 10px 22px 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.invite-main-card strong{font-family:var(--ds-font-display);color:var(--ds-coral)}.app-invite .field-grid span{background:var(--ds-navy-soft)}