:root{--color-accent: #4F46E5;--color-accent-hover: #4338CA;--color-accent-light: #EEF2FF;--color-accent-ai: #6D28D9;--color-bg-primary: #FAFAFA;--color-bg-secondary: #F4F4F5;--color-bg-card: #FFFFFF;--color-bg-ai: #F5F3FF;--color-text-primary: #111111;--color-text-secondary: #666666;--color-text-muted: #999999;--color-text-inverse: #FFFFFF;--color-border: #E5E5E5;--color-border-ai: #DDD6FE;--tag-decision-bg: #FED7AA;--tag-decision-text: #C2410C;--tag-urgent-bg: #FECACA;--tag-urgent-text: #991B1B;--tag-question-bg: #BFDBFE;--tag-question-text: #1E40AF;--tag-task-bg: #A7F3D0;--tag-task-text: #065F46;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-full: 9999px;--spacing-1: 4px;--spacing-2: 8px;--spacing-3: 12px;--spacing-4: 16px;--spacing-5: 20px;--spacing-6: 24px;--spacing-8: 32px;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-xs: 11px;--font-size-sm: 13px;--font-size-base: 15px;--font-size-lg: 17px;--font-size-xl: 20px;--font-size-2xl: 24px;--transition-fast: .1s ease;--transition-base: .2s ease;--transition-slow: .3s ease;--sidebar-width: 320px;--topbar-height: 56px;--input-height: 52px;--accent: #4F46E5;--accent-hover: #4338CA;--bg-primary: #FAFAFA;--bg-secondary: #F4F4F5;--text-primary: #111111;--text-secondary: #666666;--border: #E5E5E5}@media (prefers-color-scheme: dark){:root{--accent: #6366F1;--accent-hover: #4F46E5;--bg-primary: #0F0F14;--bg-secondary: #1A1A24;--text-primary: #F0F0F0;--text-secondary: #A0A0B0;--border: #2A2A35;--color-bg-primary: #0F0F14;--color-bg-secondary: #1A1A24;--color-bg-card: #1A1A24;--color-bg-ai: #1E1B33;--color-text-primary: #F0F0F0;--color-text-secondary: #A0A0B0;--color-text-muted: #666680;--color-border: #2A2A35;--color-border-ai: #3D2F6F;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .5)}}.dark{--color-bg-primary: #0F0F14;--color-bg-secondary: #1A1A24;--color-bg-card: #1A1A24;--color-bg-ai: #1E1B33;--color-text-primary: #F0F0F0;--color-text-secondary: #A0A0B0;--color-text-muted: #666680;--color-border: #2A2A35;--color-border-ai: #3D2F6F}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-family);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{background-color:var(--color-bg-primary);color:var(--color-text-primary);min-height:100vh;overflow:hidden}a{color:var(--color-accent);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;font-family:var(--font-family);border:none;background:none}input,textarea{font-family:var(--font-family)}::-webkit-scrollbar{width:4px;height:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-text-muted)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-2);padding:8px 16px;border-radius:var(--radius-md);font-size:var(--font-size-sm);font-weight:500;transition:background var(--transition-fast),opacity var(--transition-fast);white-space:nowrap}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-accent);color:#fff}.btn-primary:hover:not(:disabled){background:var(--color-accent-hover)}.btn-outline{background:transparent;color:var(--color-accent);border:1px solid var(--color-accent)}.btn-outline:hover:not(:disabled){background:var(--color-accent-light)}.btn-ghost{background:transparent;color:var(--color-text-secondary)}.btn-ghost:hover:not(:disabled){background:var(--color-bg-secondary);color:var(--color-text-primary)}.input{width:100%;padding:10px 14px;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg-card);color:var(--color-text-primary);font-size:var(--font-size-base);transition:border-color var(--transition-fast),box-shadow var(--transition-fast);outline:none}.input:focus{border-color:var(--color-accent);box-shadow:0 0 0 3px #4f46e51f}.input::placeholder{color:var(--color-text-muted)}.card{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-4)}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{transform:translate(-100%)}to{transform:translate(0)}}.animate-spin{animation:spin 1s linear infinite}.animate-fade-in{animation:fadeIn .2s ease forwards}