:root{--primary: #FF8C00;--primary-light: #FFA940;--primary-dark: #D46B08;--success: #52C41A;--warning: #FAAD14;--error: #FF4D4F;--bg: #F5F5F5;--card: #FFFFFF;--text: #333333;--text-secondary: #666666;--text-hint: #999999;--border: #E8E8E8;--radius: 12px;--shadow: 0 2px 12px rgba(0,0,0,.08)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:14px;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}a{color:var(--primary);text-decoration:none}button{cursor:pointer;border:none;outline:none;font-family:inherit}input,select,textarea{font-family:inherit;font-size:inherit;outline:none}.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 24px;border-radius:8px;font-size:14px;font-weight:500;transition:all .2s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-primary:disabled{background:#ccc;cursor:not-allowed}.btn-outline{background:transparent;color:var(--primary);border:1px solid var(--primary)}.btn-outline:hover{background:#ff8c000d}.btn-block{display:flex;width:100%}.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.input{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:8px;font-size:14px;transition:border-color .2s}.input:focus{border-color:var(--primary)}.form-group{margin-bottom:16px}.form-group label{display:block;margin-bottom:6px;font-size:13px;color:var(--text-secondary);font-weight:500}.toast{position:fixed;top:20px;left:50%;transform:translate(-50%);padding:10px 24px;border-radius:8px;font-size:14px;z-index:9999;animation:fadeInDown .3s ease}.toast-success{background:var(--success);color:#fff}.toast-error{background:var(--error);color:#fff}@keyframes fadeInDown{0%{opacity:0;transform:translate(-50%) translateY(-20px)}to{opacity:1;transform:translate(-50%) translateY(0)}}@media(max-width:768px){.card{padding:16px}.btn{padding:12px 20px}}.skeleton{background:linear-gradient(90deg,#f0f0f0 25%,#e0e0e0,#f0f0f0 75%);background-size:200% 100%;animation:skeleton-pulse 1.5s ease-in-out infinite;border-radius:6px}@keyframes skeleton-pulse{0%{background-position:200% 0}to{background-position:-200% 0}}.skeleton-text{height:14px;margin-bottom:8px}.skeleton-text:last-child{width:60%}.skeleton-title{height:20px;width:40%;margin-bottom:16px}.skeleton-card{height:120px;margin-bottom:16px}.skeleton-table-row{height:48px;margin-bottom:4px}.skeleton-avatar{width:64px;height:64px;border-radius:12px}.skeleton-image{width:100%;aspect-ratio:1;border-radius:8px}.skeleton-stat-card{height:100px;border-radius:12px}.skeleton-chart{height:140px;border-radius:8px}