* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
}
.tool-container {
    max-width: 1000px;
    margin: 40px auto;
    padding: 0 22px;
}
.tool-header {
    text-align: center;
    margin-bottom: 36px;
}
.tool-title {
    font-size: 28px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 8px;
}
.tool-desc {
    font-size: 15px;
    color: #64748b;
}
.tool-card {
    background: #ffffff;
    border-radius: 20px;
    padding: 36px;
    border: 1px solid #e2e8f0;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.04);
}
.form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    align-items: center;
    max-width: 600px;
}
.form-group {
    flex: 1;
}
.form-label {
    display: block;
    font-size: 15px;
    font-weight: 500;
    color: #334155;
    margin-bottom: 10px;
}
.select-box {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    font-size: 15px;
    color: #1e293b;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 16px;
    transition: border-color 0.2s;
    background-color: #fff;
}
.select-box:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}
/* 车牌表格样式 */
.plate-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid #e2e8f0;
}
.plate-table th {
    background: #f8fafc;
    padding: 16px;
    font-size: 15px;
    font-weight: 600;
    color: #334155;
    text-align: center;
}
.plate-table td {
    padding: 14px;
    font-size: 15px;
    color: #475569;
    text-align: center;
    border-bottom: 1px solid #f1f5f9;
}
.plate-table tr:last-child td {
    border-bottom: none;
}
.plate-code {
    color: #2563eb;
    font-weight: 600;
}
.empty-tip {
    padding: 40px;
    text-align: center;
    color: #64748b;
    font-size: 15px;
}
/* 新增：省份简称栏样式 */
.province-shortcuts {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 24px;
    padding: 16px;

    border-radius: 12px;
}
.shortcut-item {
    padding: 6px 14px;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
    color: #475569;
    cursor: pointer;
    transition: all 0.2s ease;
}
.shortcut-item:hover {
    background: #2563eb;
    color: #fff;
    border-color: #2563eb;
}
.shortcut-item.active {
    background: #2563eb;
    color: #fff;
    border-color: #2563eb;
}

@media (max-width: 640px) {
    .form-row {
        flex-direction: column;
        align-items: stretch;
    }
    .tool-card {
        padding: 24px;
    }
    .plate-table th,
    .plate-table td {
        padding: 12px 8px;
        font-size: 14px;
    }
}