:root{--primary: #d4380d;--primary-hover: #cf1322;--bg: #f4f5f7;--bg-card: #fff;--text-primary: #1a1a1a;--text-secondary: #666;--text-tertiary: #999;--border: #e8e8e8;--shadow: 0 1px 3px rgba(0,0,0,.08);--shadow-md: 0 2px 12px rgba(0,0,0,.1)}*{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;background:var(--bg);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit}input,textarea,select{font-family:inherit}button{cursor:pointer;font-family:inherit}.container{max-width:1100px;margin:0 auto;padding:0 16px}.btn-primary{background:var(--primary);color:#fff;border:none;padding:8px 20px;border-radius:6px;font-size:14px;font-weight:600;transition:background .2s}.btn-primary:hover{background:var(--primary-hover)}.btn-outline{background:transparent;color:var(--primary);border:1px solid var(--primary);padding:7px 18px;border-radius:6px;font-size:14px;font-weight:500;transition:all .2s}.btn-outline:hover{background:var(--primary);color:#fff}.btn-ghost{background:transparent;border:none;color:var(--text-secondary);padding:6px 12px;border-radius:4px;font-size:13px;transition:all .2s}.btn-ghost:hover{background:#0000000d;color:var(--text-primary)}.card{background:var(--bg-card);border-radius:8px;border:1px solid var(--border);box-shadow:var(--shadow);overflow:hidden}.input{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:6px;font-size:14px;outline:none;transition:border-color .2s;background:#fff}.input:focus{border-color:var(--primary)}.tag{display:inline-block;padding:2px 8px;border-radius:4px;font-size:12px;font-weight:500}.empty-state{text-align:center;padding:60px 20px;color:var(--text-tertiary)}.empty-state h3{font-size:16px;color:var(--text-secondary);margin-bottom:8px}