*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--primary: #FF7300;--primary-dark: #E06500;--primary-light: rgba(255, 115, 0, .1);--primary-glow: rgba(255, 115, 0, .25);--sidebar-bg: #16182A;--sidebar-hover: rgba(255, 115, 0, .12);--sidebar-focus: rgba(255, 115, 0, .22);--bg: #F0F2F5;--surface: #FFFFFF;--text-primary: #1C1C28;--text-secondary: #6B7280;--text-muted: #9CA3AF;--border: #E5E7EB;--border-strong: #D1D5DB;--shadow-sm: 0 1px 3px rgba(0,0,0,.07);--shadow-md: 0 4px 14px rgba(0,0,0,.09);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--speed: .18s;font-family:Segoe UI,system-ui,-apple-system,sans-serif;font-size:14px;line-height:1.5;color:var(--text-primary)}html,body{height:100%;width:100%;overflow:hidden;background:var(--bg)}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}button{font-family:inherit;font-size:14px;cursor:pointer;border:none;border-radius:var(--radius-sm);transition:background var(--speed),color var(--speed),box-shadow var(--speed),transform var(--speed)}button:disabled{opacity:.38;cursor:not-allowed}input,textarea,select{font-family:inherit;font-size:14px;color:var(--text-primary);border:1px solid var(--border);border-radius:var(--radius-sm);outline:none;transition:border-color var(--speed),box-shadow var(--speed);padding:8px 12px;background:var(--surface)}input:focus,textarea:focus,select:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}