:root{--color-primary:#1668dc;--color-primary-dark:#0f56b8;--color-danger:#d93026;--color-success:#0b8457;--color-warning:#d9822b;--color-bg:#f5f6f8;--color-card:#ffffff;--color-border:#e3e6ea;--color-text:#1f2329;--color-text-secondary:#646a73;--radius:8px;--shadow:0 1px 3px rgba(0,0,0,0.08)}*{box-sizing:border-box;margin:0;padding:0}body,html{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Arial,sans-serif;background:var(--color-bg);color:var(--color-text);font-size:14px;line-height:1.6}a{color:var(--color-primary);text-decoration:none}button{font-family:inherit;cursor:pointer}input,select,textarea{font-family:inherit;font-size:14px;color:var(--color-text);border:1px solid var(--color-border);border-radius:var(--radius);padding:8px 10px;background:#fff;outline:none}input:focus,select:focus,textarea:focus{border-color:var(--color-primary);box-shadow:0 0 0 2px rgba(22,104,220,.12)}table{border-collapse:collapse;width:100%}td,th{border:1px solid var(--color-border);padding:8px 10px;text-align:left}th{background:#fafbfc;font-weight:600;white-space:nowrap}.btn{display:inline-flex;align-items:center;justify-content:center;gap:4px;border:none;border-radius:var(--radius);padding:8px 16px;font-size:14px;background:var(--color-primary);color:#fff;transition:background .15s}.btn:hover{background:var(--color-primary-dark)}.btn-secondary{background:#fff;color:var(--color-text);border:1px solid var(--color-border)}.btn-secondary:hover{border-color:var(--color-primary);color:var(--color-primary)}.btn-danger{background:var(--color-danger)}.btn-danger:hover{background:#b3251d}.btn-sm{padding:4px 10px;font-size:13px}.btn:disabled{opacity:.6;cursor:not-allowed}.card{background:var(--color-card);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.form-row{margin-bottom:16px}.form-label{display:block;margin-bottom:6px;font-weight:500}.form-label .required{color:var(--color-danger);margin-left:2px}.form-input,.form-select,.form-textarea{width:100%}.form-hint{margin-top:4px;font-size:12px;color:var(--color-text-secondary)}.form-error{color:var(--color-danger);font-size:13px;margin-top:8px}.tag{display:inline-block;padding:2px 8px;border-radius:4px;font-size:12px;line-height:1.6}.tag-red{background:#fdecea;color:var(--color-danger)}.tag-orange{background:#fdf3e7;color:var(--color-warning)}.tag-green{background:#e7f6ef;color:var(--color-success)}.tag-blue{background:#eaf1fd;color:var(--color-primary)}.tag-gray{background:#f0f1f3;color:var(--color-text-secondary)}