:root{font-family:Segoe UI,Helvetica,Arial,Noto Sans TC,sans-serif;color:#050505;background:#f0f2f5;font-synthesis:none;--fb-primary: #0866ff;--fb-primary-hover: #075ce5;--fb-bg: #f0f2f5;--fb-surface: #ffffff;--fb-text-primary: #050505;--fb-text-secondary: #65676b;--fb-text-muted: #8a8d91;--fb-disabled-text: #bcc0c4;--fb-control: #e4e6eb;--fb-hover: #f2f2f2;--fb-divider: #ced0d4;--fb-success: #16883f;--fb-danger: #c43131;--fb-warning: #9a5b00;--brand-orange: #ef8a4c;--fb-radius-sm: 6px;--fb-radius-md: 8px;--fb-radius-lg: 12px;--fb-radius-pill: 999px;--fb-shadow-card: 0 1px 2px rgba(0, 0, 0, .1);--fb-shadow-popup: 0 2px 12px rgba(0, 0, 0, .18);--fb-dark-bg: #18191a;--fb-dark-surface: #242526;--fb-dark-control: #3a3b3c;--fb-dark-text-primary: #e4e6eb;--fb-dark-text-secondary: #b0b3b8;--workspace-ink: #edf6f3;--workspace-muted: #93aaa1;--workspace-line: rgba(164, 205, 188, .15);--workspace-panel: rgba(13, 38, 29, .86);--workspace-accent: #69e6ad;--workspace-danger: 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span:last-child{width:18px;background:var(--brand-orange)}.auth-identity__system{display:grid;justify-items:start;gap:5px;margin:13px 0 0}.auth-identity__system-zh{color:var(--fb-text-primary);font-size:1.375rem;font-weight:750;line-height:1.25;letter-spacing:.04em}.auth-identity__system-en{color:var(--fb-primary);font-size:2rem;font-weight:800;line-height:1.15;letter-spacing:-.035em}.auth-panel{width:100%}.auth-card{width:100%;padding:24px;border-radius:var(--fb-radius-md);background:var(--fb-surface);box-shadow:var(--fb-shadow-card)}.auth-card__header{margin-bottom:22px}.auth-card__header h2{margin:0;font-size:1.5rem;font-weight:700;line-height:1.3;letter-spacing:-.025em}.auth-card__header p{margin:7px 0 0;color:var(--fb-text-secondary);font-size:.9375rem;line-height:1.5}.auth-form{display:grid;gap:15px}.field{display:grid;gap:7px;margin:0}.field__label{color:var(--fb-text-primary);font-size:.875rem;font-weight:600}.text-input{width:100%;height:44px;padding:0 13px;border:1px solid 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ease}.password-toggle:hover:not(:disabled){color:var(--fb-text-primary);background:var(--fb-control)}.password-toggle:focus-visible,.notice-action:focus-visible,.auth-text-button:focus-visible{outline:0;box-shadow:0 0 0 3px #0866ff33}.password-toggle:disabled{opacity:.5}.field-help{margin:-7px 0 0;color:var(--fb-text-secondary);font-size:.8125rem;line-height:1.45}.inline-notice{display:grid;grid-template-columns:20px minmax(0,1fr) auto;align-items:start;gap:10px;padding:11px 12px;border-radius:var(--fb-radius-md);font-size:.875rem;line-height:1.45}.inline-notice+.auth-form{margin-top:15px}.inline-notice--error{color:#8e2020;background:#fdecec}.inline-notice--success{color:#126d34;background:#e8f6ed}.inline-notice--warning{color:#7a4900;background:#fff3dc}.inline-notice__icon{margin-top:1px}.inline-notice__content strong,.inline-notice__content span{display:block}.inline-notice__content strong{font-weight:700}.inline-notice__content 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