.archive-layout{display:flex;flex-direction:column;min-height:100vh;min-height:100dvh;background:var(--color-bg-primary)}.archive-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-lg) var(--space-xl);max-width:1100px;width:100%;margin:0 auto}.archive-header-brand{display:flex;align-items:center;gap:var(--space-sm);color:var(--color-text-primary);font-weight:700;font-size:var(--font-size-lg)}.archive-header-logo{width:28px;height:28px;object-fit:contain}.archive-theme-toggle{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--radius-md);color:var(--color-text-secondary);transition:all var(--transition-fast)}.archive-theme-toggle:hover{background:var(--color-bg-hover);color:var(--color-text-primary)}.archive-main{flex:1;width:100%}.maintenance-banner{width:100%;background:var(--color-bg-disclaimer);border-bottom:1px solid var(--color-border-disclaimer)}.maintenance-toggle{display:flex;align-items:center;justify-content:space-between;width:100%;max-width:900px;margin:0 auto;padding:var(--space-sm) var(--space-lg);background:none;border:none;cursor:pointer;color:var(--color-text-disclaimer);font-size:var(--font-size-sm);font-weight:600;transition:background var(--transition-fast)}.maintenance-toggle:hover{background:#00000008}.maintenance-toggle-left{display:flex;align-items:center;gap:var(--space-sm);text-align:left}.maintenance-chevron{flex-shrink:0;transition:transform var(--transition-base);opacity:.8}.maintenance-chevron.expanded{transform:rotate(180deg)}.maintenance-content{max-width:900px;margin:0 auto;padding:0 var(--space-lg) var(--space-lg);display:flex;flex-direction:column;gap:var(--space-sm)}.maintenance-content p{margin:0;font-size:var(--font-size-sm);line-height:1.6;color:var(--color-text-disclaimer)}.maintenance-content strong{font-weight:700}:root{--color-bg-primary: #ffffff;--color-bg-secondary: #f8f9fa;--color-bg-tertiary: #f0f2f5;--color-bg-sidebar: #f8f9fa;--color-bg-input: #f0f2f5;--color-bg-message-user: #2563eb;--color-bg-message-ai: #f0f2f5;--color-bg-hover: rgba(0, 0, 0, .04);--color-bg-modal-overlay: rgba(0, 0, 0, .4);--color-bg-disclaimer: rgba(245, 158, 11, .06);--color-text-primary: #1a1a1a;--color-text-secondary: #6b7280;--color-text-muted: #9ca3af;--color-text-disclaimer: #b45309;--color-text-inverse: #ffffff;--color-border: #e5e7eb;--color-border-focus: #2563eb;--color-border-disclaimer: rgba(245, 158, 11, .25);--color-accent: #2563eb;--color-accent-hover: #1d4ed8;--color-accent-glow: rgba(37, 99, 235, .15);--color-danger: #dc2626;--color-success: #16a34a;--color-warning: #d97706;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-xs: .75rem;--font-size-sm: .8125rem;--font-size-base: .9375rem;--font-size-md: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.5rem;--font-size-2xl: 2rem;--space-xs: .25rem;--space-sm: .5rem;--space-md: .75rem;--space-lg: 1rem;--space-xl: 1.5rem;--space-2xl: 2rem;--space-3xl: 3rem;--sidebar-width: 280px;--header-height: 40px;--input-area-height: auto;--max-message-width: 720px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 20px;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .1);--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .4s ease}[data-theme=dark]{--color-bg-primary: #0f172a;--color-bg-secondary: #1e293b;--color-bg-tertiary: #334155;--color-bg-sidebar: #0f172a;--color-bg-input: #1e293b;--color-bg-message-user: #3b82f6;--color-bg-message-ai: #1e293b;--color-bg-hover: rgba(255, 255, 255, .05);--color-bg-modal-overlay: rgba(0, 0, 0, .7);--color-bg-disclaimer: rgba(245, 158, 11, .1);--color-text-primary: #f1f5f9;--color-text-secondary: #94a3b8;--color-text-muted: #64748b;--color-text-disclaimer: #fbbf24;--color-border: #334155;--color-border-focus: #60a5fa;--color-accent: #3b82f6;--color-accent-hover: #2563eb;--color-accent-glow: rgba(59, 130, 246, .25);--color-danger: #ef4444;--color-success: #22c55e;--color-warning: #f59e0b}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);font-size:var(--font-size-base);color:var(--color-text-primary);background:var(--color-bg-primary);line-height:1.6;min-height:100vh;min-height:100dvh;overflow-x:hidden}a{color:var(--color-accent);text-decoration:none}a:hover{color:var(--color-accent-hover)}button{font-family:var(--font-family);cursor:pointer;border:none;background:none;color:inherit;font-size:inherit}input,textarea{font-family:var(--font-family);color:var(--color-text-primary);background:transparent;border:none;outline:none}img{max-width:100%;display:block}ul,ol{list-style:none}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#0000001f;border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:#0003}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.animate-slide-up{animation:slideUp var(--transition-base) ease forwards}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.loading-spinner{width:24px;height:24px;border:2px solid var(--color-border);border-top-color:var(--color-accent);border-radius:50%;animation:spin .6s linear infinite}.loading-screen{display:flex;align-items:center;justify-content:center;height:100vh;height:100dvh;background:var(--color-bg-primary)}