:root{--bg-base: #ffffff;--bg-surface: #f7f3ea;--bg-sidebar: #0e3c39;--bg-sidebar-active: #124e49;--bg-input: #ffffff;--bg-hover: #f1ede2;--bg-user-msg: #f7f3ea;--bg-ai-msg: #ffffff;--bg-ref: #faf8f2;--bg-thinking: #faf8f2;--bg-auth: #ffffff;--bg-mark: #0e9488;--bg-send: #0e9488;--bg-send-hover: #0c7d73;--text-primary: #16221f;--text-secondary:#3f4b48;--text-muted: #6b7572;--text-faint: #98a09d;--text-mark: #ffffff;--border-soft: #e8e1d2;--border-med: #d7cdb6;--accent: #0e9488;--accent-bg: #e3f4f1;--accent-border: #bfe6df;--accent-text: #0c766c;--accent-muted: #7fc9c0;--err-bg: #fef2f2;--err-border: #fecaca;--err-text: #dc2626;--green: #22c55e;--green-bg: #dcfce7;--amber: #f59e0b;--amber-bg: #fef3c7;--purple: #a855f7;--purple-bg: #f3e8ff;--sb-text: #f3f8f7;--sb-text-muted: #b9d4d0;--sb-text-faint: #7fa9a3;--sb-border: rgba(255,255,255,.08);--sb-accent: #2dd4bf;--sb-accent-text:#0e2624;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 22px;--shadow-sm: 0 1px 2px rgba(20, 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a:hover{text-decoration:underline}.auth-page-guest{text-align:center;margin-top:10px}.auth-page-guest a{font-size:12px;color:var(--text-faint);text-decoration:none;transition:color .15s}.auth-page-guest a:hover{color:var(--text-muted)}.field-group{display:flex;flex-direction:column;gap:5px}.field-label{font-size:12.5px;font-weight:500;color:var(--text-secondary);display:flex;align-items:center;gap:6px}.field-hint{font-size:11px;color:var(--text-faint);font-weight:400}.field-wrap{display:flex;align-items:center;gap:10px;border:.5px solid var(--border-med);border-radius:8px;padding:0 12px;background:var(--bg-input);transition:border-color .2s,box-shadow .2s}.field-wrap:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-bg)}.field-icon{color:var(--text-faint);flex-shrink:0}.field-input{flex:1;border:none;outline:none;background:transparent;font-size:13.5px;color:var(--text-primary);padding:10px 0;line-height:1.4}.field-input::placeholder{color:var(--text-faint)}.auth-error{display:flex;align-items:center;gap:7px;padding:10px 12px;background:var(--err-bg);border:.5px solid var(--err-border);border-radius:8px;font-size:12.5px;color:var(--err-text)}.spin{animation:spinning .8s linear infinite}@keyframes spinning{to{transform:rotate(360deg)}}.migration-card{max-width:380px;text-align:center;padding:40px 36px 32px}.migration-icon{font-size:40px;margin-bottom:16px}.migration-title{font-size:18px;font-weight:600;color:var(--text-primary);margin-bottom:10px}.migration-desc{font-size:13.5px;color:var(--text-muted);line-height:1.7;margin-bottom:24px}.migration-desc strong{color:var(--text-primary);font-weight:600}.migration-actions{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}.migration-btn{display:flex;align-items:center;justify-content:center;gap:8px;padding:10px;border-radius:9px;font-size:13.5px;font-weight:500;transition:opacity .15s,background .15s}.migration-btn:disabled{opacity:.5;cursor:not-allowed}.migration-btn.primary{background:var(--bg-mark);color:var(--text-mark);border:none}.migration-btn.primary:hover:not(:disabled){opacity:.88}.migration-btn.secondary{background:none;border:.5px solid var(--border-soft);color:var(--text-muted)}.migration-btn.secondary:hover:not(:disabled){background:var(--bg-hover)}.migration-hint{font-size:11.5px;color:var(--text-faint);line-height:1.6}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;align-items:center;justify-content:center;z-index:100;padding:24px;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.modal-card{background:var(--bg-base);border:.5px solid var(--border-soft);border-radius:16px;width:100%;box-shadow:0 8px 40px #00000026}