:root{color-scheme:light;--bg: #f7f8fb;--surface: #ffffff;--surface-2: #fbfcff;--text: #111318;--muted: #6b7280;--subtle: #9ca3af;--line: #e9ecf2;--line-soft: #f0f2f6;--primary: #6d5df6;--primary-soft: #f3f1ff;--teal: #0f766e;--teal-soft: #ecfdf5;--amber: #a16207;--amber-soft: #fffbeb;--danger: #dc2626;--danger-soft: #fef2f2;--code-bg: #0b0b10;--shadow: 0 18px 45px rgba(17, 24, 39, .06);--shadow-sm: 0 8px 22px rgba(17, 24, 39, .045);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box}body{margin:0;min-height:100dvh;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}button,input,textarea,select{font:inherit}button,a{cursor:pointer}a{color:var(--primary);text-decoration:none}button{min-height:40px;border:1px solid transparent;border-radius:10px;padding:0 14px;color:var(--text);background:var(--surface-2);transition:background .16s ease,border-color .16s ease,color .16s ease,transform 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span{color:#9a5f00;font-size:12px;font-weight:760}.profile-reminder-card strong{overflow:hidden;color:#111827;font-size:13px;text-overflow:ellipsis;white-space:nowrap}.profile-reminder-card.completed{border-color:#14b8a638;background:#ecfdf8}.profile-reminder-card.completed span{color:#0f766e}.account-support-panel{padding:13px;border:1px solid var(--line);background:var(--surface);border-radius:12px;margin-bottom:14px}.account-support-panel.compact{background:var(--surface-2)}.account-support-panel h3,.account-support-panel h4{margin:0;color:var(--text);font-size:14px}.account-support-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:10px}.account-support-head span{color:var(--muted);font-size:12px;line-height:1.5;text-align:right}.account-support-list{display:grid;gap:8px}.account-support-item{display:grid;grid-template-columns:minmax(72px,.28fr) minmax(0,1fr);gap:10px;margin:0;padding:9px 10px;border:1px solid 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ease}.session-item.active{border-color:#6d59f429;background:var(--primary-soft)}.session-select,.quick-card{width:100%;min-height:auto;padding:10px;border:1px solid transparent;border-radius:11px;text-align:left;color:var(--text);background:transparent}.session-select{min-width:0}.session-item.active .session-select{color:var(--primary)}.session-actions{display:flex;gap:6px;align-items:center;justify-content:flex-end;padding:0 6px 6px;opacity:0;transition:opacity .16s ease}.session-actions button{align-self:center;min-height:30px;padding:0 8px;border:1px solid transparent;border-radius:9px;color:var(--muted);background:transparent;font-size:12px}.session-item:hover .session-actions,.session-item:focus-within .session-actions{opacity:1}.session-actions button:hover{color:var(--primary);border-color:color-mix(in srgb,var(--primary) 18%,transparent);background:var(--primary-soft)}.session-archive:hover{color:var(--danger);border-color:#ef44442e;background:#ef44440f}@media (hover: 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var(--line-soft);border-radius:7px;background:var(--surface);color:#aab2c4;font-size:15px;line-height:1;box-shadow:none}.answer-rating-stars button:hover,.answer-rating-stars button:focus-visible{border-color:#f59e0b5c;background:#fff8e6;color:#d97706;transform:none}.answer-rating-stars button.active{border-color:#f59e0b6b;background:#fff3c4;color:#d97706}.markdown p{margin:0 0 9px;color:var(--text);line-height:1.72}.markdown h3,.markdown h4,.markdown h5{margin:12px 0 8px;color:var(--text);line-height:1.38}.markdown h3{font-size:16px}.markdown h4{font-size:14px}.markdown h5{font-size:13px}.markdown ul,.markdown ol{margin:0 0 9px 18px;padding:0;color:var(--text);line-height:1.72}.markdown blockquote{margin:8px 0 10px;padding:8px 12px;color:var(--muted);border-left:3px solid var(--primary);background:var(--surface-2);border-radius:8px}.markdown strong{color:var(--text);font-weight:750}.inline-code{padding:2px 5px;border-radius:6px;color:var(--primary);background:var(--primary-soft);font-size:12px}.typing-indicator{min-height:42px;display:inline-flex;align-items:center;gap:10px;color:var(--muted);font-size:13px}.typing-dots{display:inline-flex;align-items:center;gap:4px}.typing-dots b{width:6px;height:6px;border-radius:999px;background:var(--primary);animation:typing-bounce 1s infinite ease-in-out}.typing-dots b:nth-child(2){animation-delay:.14s}.typing-dots b:nth-child(3){animation-delay:.28s}@keyframes typing-bounce{0%,80%,to{opacity:.32;transform:translateY(0)}40%{opacity:1;transform:translateY(-4px)}}.code-wrap{overflow:hidden;border:1px solid var(--line);border-radius:12px;margin:12px 0;background:var(--code-bg)}.code-head{min-height:32px;padding:0 11px;display:flex;align-items:center;justify-content:space-between;gap:10px;background:#15151d;color:#a1a1aa;font-size:12px}.code-head button{min-height:24px;padding:0 8px;border-radius:7px;color:#d4d4d8;background:#1f1f28;border-color:#30303a;font-size:12px}.code-actions{display:flex;align-items:center;gap:6px}pre{margin:0;overflow:auto;padding:12px 13px 14px;line-height:1.65}.message .code-wrap pre{max-height:320px}code{color:#e5e7eb;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;font-size:12.5px}.source-list{margin-top:10px;display:grid;gap:7px;color:var(--muted)}.source-list strong{width:100%;color:var(--muted);font-size:12px}.source-list div{border:1px solid color-mix(in srgb,var(--primary) 18%,transparent);color:var(--text);background:var(--primary-soft);border-radius:10px;padding:8px 10px;font-size:12px}.source-list div>span{display:block;color:var(--primary);font-weight:700}.source-list small{display:block;margin-top:2px;color:var(--muted)}.source-list p{margin:6px 0 0;color:var(--muted);line-height:1.55}.composer{padding:12px 14px 14px;border-top:1px solid 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