/* 重置样式 */
* {
    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;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
}

.nav-brand i {
    margin-right: 10px;
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    background: rgba(255,255,255,0.1);
}

.nav-contact {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,0.2);
    padding: 0.5rem 1rem;
    border-radius: 25px;
}

.nav-contact i {
    margin-right: 8px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border: none;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #1e3c72;
}

.btn-outline {
    background: transparent;
    color: #1e3c72;
    border: 2px solid #1e3c72;
}

.btn-outline:hover {
    background: #1e3c72;
    color: white;
}

/* 英雄区域 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 80px;
    margin-top: 70px;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-image {
    text-align: center;
}

.hero-image i {
    font-size: 15rem;
    opacity: 0.3;
}

/* 区块标题 */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #1e3c72;
    position: relative;
}

.section-title::after {
    content: '';
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

/* 产品预览 */
.products-preview {
    padding: 80px 0;
    background: white;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.product-card {
    background: white;
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.product-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.product-icon i {
    color: white;
    font-size: 1.5rem;
}

.product-type {
    color: #667eea;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.product-name {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #1e3c72;
}

.product-price {
    font-size: 1.5rem;
    font-weight: bold;
    color: #e74c3c;
    margin-bottom: 1rem;
}

.product-price span {
    font-size: 0.9rem;
    color: #666;
    font-weight: normal;
}

.product-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.product-features li {
    padding: 0.3rem 0;
    color: #666;
    position: relative;
    padding-left: 1.5rem;
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #27ae60;
    font-weight: bold;
}

.product-actions {
    display: flex;
    gap: 0.5rem;
}

.product-actions .btn {
    flex: 1;
    padding: 8px 16px;
    font-size: 0.9rem;
}

/* 特色服务 */
.features {
    padding: 80px 0;
    background: #f8f9fa;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.feature-card i {
    font-size: 3rem;
    color: #667eea;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #1e3c72;
}

.feature-card p {
    color: #666;
}

/* 关于我们 */
.about {
    padding: 80px 0;
    background: white;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: #1e3c72;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: #666;
    font-size: 1.1rem;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 10px;
}

.stat-item h3 {
    font-size: 2rem;
    color: #667eea;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: #666;
    font-size: 0.9rem;
}

.about-image {
    text-align: center;
}

.about-image i {
    font-size: 10rem;
    color: #e8eaf6;
}

/* 联系我们 */
.contact {
    padding: 80px 0;
    background: #f8f9fa;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.contact-item i {
    font-size: 2rem;
    color: #667eea;
    margin-right: 1rem;
    margin-top: 0.5rem;
}

.contact-item h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #1e3c72;
}

.contact-item p {
    color: #666;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.contact-form h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: #1e3c72;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #e1e8ed;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

/* 页脚 */
.footer {
    background: #1e3c72;
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    font-size: 1.3rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.footer-brand i {
    margin-right: 10px;
}

.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #b8c5d6;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #b8c5d6;
}

/* 产品页面样式 */
.products-page {
    margin-top: 70px;
}

.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 60px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.filters {
    background: white;
    padding: 2rem 0;
    border-bottom: 1px solid #e1e8ed;
    position: sticky;
    top: 70px;
    z-index: 100;
}

.filter-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    justify-content: center;
}

.filter-tab {
    padding: 0.8rem 1.5rem;
    background: #f8f9fa;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.filter-tab.active,
.filter-tab:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.filter-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sort-select select,
.search-box input {
    padding: 10px 15px;
    border: 2px solid #e1e8ed;
    border-radius: 5px;
    font-size: 1rem;
}

.search-box {
    position: relative;
}

.search-box i {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #666;
}

.search-box input {
    padding-right: 40px;
    width: 250px;
}

.products-section {
    padding: 40px 0;
}

.load-more {
    text-align: center;
    margin-top: 3rem;
}

/* 产品对比工具 */
.compare-section {
    background: white;
    padding: 2rem 0;
    border-top: 1px solid #e1e8ed;
    position: sticky;
    bottom: 0;
    box-shadow: 0 -5px 20px rgba(0,0,0,0.1);
}

.compare-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.compare-items {
    display: flex;
    gap: 1rem;
    flex: 1;
}

.compare-item {
    background: #f8f9fa;
    padding: 0.8rem 1rem;
    border-radius: 5px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.compare-item button {
    background: #e74c3c;
    color: white;
    border: none;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    cursor: pointer;
    font-size: 12px;
}

.compare-actions {
    display: flex;
    gap: 1rem;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 2rem;
    border-radius: 10px;
    width: 80%;
    max-width: 600px;
    position: relative;
    animation: slideIn 0.3s ease;
}

.modal-content.large {
    max-width: 1200px;
    width: 95%;
}

.close {
    position: absolute;
    right: 1rem;
    top: 1rem;
    font-size: 2rem;
    cursor: pointer;
    color: #666;
}

.close:hover {
    color: #333;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* 产品详情样式 */
.product-detail {
    max-height: 70vh;
    overflow-y: auto;
}

.product-detail-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e1e8ed;
}

.product-detail-body {
    margin-bottom: 2rem;
}

.product-detail-section {
    margin-bottom: 2rem;
}

.product-detail-section h4 {
    color: #1e3c72;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.product-detail-features {
    list-style: none;
}

.product-detail-features li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.product-detail-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #27ae60;
    font-weight: bold;
}

.product-detail-footer {
    text-align: center;
    padding-top: 1rem;
    border-top: 1px solid #e1e8ed;
}

/* 对比表格样式 */
.compare-table-container {
    max-height: 70vh;
    overflow-y: auto;
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.compare-table th,
.compare-table td {
    border: 1px solid #e1e8ed;
    padding: 1rem;
    text-align: left;
}

.compare-table th {
    background: #f8f9fa;
    font-weight: 600;
    color: #1e3c72;
}

.compare-table tr:nth-child(even) {
    background: #f8f9fa;
}

.compare-table .product-name {
    font-weight: 600;
    color: #1e3c72;
}

.compare-table .price {
    color: #e74c3c;
    font-weight: bold;
}

.compare-table .included {
    color: #27ae60;
    font-weight: bold;
}

.compare-table .not-included {
    color: #e74c3c;
}

/* 移动端适配 - 汉堡菜单 */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-contact {
    display: none;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .container {
        padding: 0 20px;
    }
    
    .hero .container {
        gap: 2rem;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    /* 导航栏移动端优化 */
    .navbar {
        padding: 0.8rem 0;
    }
    
    .navbar .container {
        flex-wrap: wrap;
        padding: 0 15px;
    }
    
    .mobile-menu-toggle {
        display: block;
        order: 3;
        margin-left: auto;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
        flex-direction: column;
        padding: 1rem 0;
        box-shadow: 0 5px 20px rgba(0,0,0,0.2);
        z-index: 999;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu li {
        text-align: center;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    
    .nav-menu li:last-child {
        border-bottom: none;
    }
    
    .nav-link {
        display: block;
        padding: 1rem;
        font-size: 1rem;
    }
    
    .nav-contact {
        display: none;
    }
    
    /* 英雄区域移动端优化 */
    .hero {
        padding: 100px 0 60px;
        margin-top: 60px;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 2.2rem;
        line-height: 1.3;
        margin-bottom: 1rem;
    }
    
    .hero-content p {
        font-size: 1.1rem;
        margin-bottom: 1.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }
    
    .hero-buttons .btn {
        width: 200px;
    }
    
    .hero-image i {
        font-size: 6rem;
    }
    
    /* 区块标题移动端优化 */
    .section-title {
        font-size: 2rem;
        margin-bottom: 2rem;
    }
    
    /* 产品预览移动端优化 */
    .products-preview {
        padding: 50px 0;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        margin-bottom: 2rem;
    }
    
    .product-card {
        padding: 1.5rem;
    }
    
    .product-actions {
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .product-actions .btn {
        width: 100%;
    }
    
    /* 特色服务移动端优化 */
    .features {
        padding: 50px 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
    
    .feature-card i {
        font-size: 2.5rem;
    }
    
    .feature-card h3 {
        font-size: 1.2rem;
    }
    
    /* 关于我们移动端优化 */
    .about {
        padding: 50px 0;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .about-text h2 {
        font-size: 2rem;
    }
    
    .about-text p {
        font-size: 1rem;
    }
    
    .stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .stat-item {
        padding: 1rem;
    }
    
    .stat-item h3 {
        font-size: 1.8rem;
    }
    
    .about-image i {
        font-size: 6rem;
    }
    
    /* 联系我们移动端优化 */
    .contact {
        padding: 50px 0;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        padding: 1rem;
    }
    
    .contact-item i {
        margin-right: 0;
        margin-bottom: 1rem;
        font-size: 1.5rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
    
    .contact-form h3 {
        font-size: 1.3rem;
    }
    
    /* 页脚移动端优化 */
    .footer {
        padding: 30px 0 15px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        text-align: center;
    }
    
    .footer-section {
        margin-bottom: 1rem;
    }
    
    .social-links {
        justify-content: center;
    }
    
    /* 产品页面移动端优化 */
    .products-page {
        margin-top: 60px;
    }
    
    .page-header {
        padding: 40px 0;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .page-header p {
        font-size: 1rem;
    }
    
    .filters {
        padding: 1.5rem 0;
        position: static;
    }
    
    .filter-tabs {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.5rem;
        margin-bottom: 1rem;
    }
    
    .filter-tab {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
        flex: 0 0 calc(50% - 0.5rem);
        text-align: center;
    }
    
    .filter-controls {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .sort-select select {
        width: 100%;
    }
    
    .search-box {
        width: 100%;
    }
    
    .search-box input {
        width: 100%;
        padding: 10px 40px 10px 15px;
    }
    
    .products-section {
        padding: 30px 0;
    }
    
    .load-more {
        margin-top: 2rem;
    }
    
    /* 产品对比工具移动端优化 */
    .compare-section {
        position: static;
        padding: 1rem 0;
        margin-bottom: 1rem;
    }
    
    .compare-container {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .compare-items {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .compare-item {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .compare-actions {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .compare-actions .btn {
        width: 100%;
    }
    
    /* 模态框移动端优化 */
    .modal-content {
        width: 95%;
        margin: 10% auto;
        padding: 1.5rem;
        max-height: 80vh;
        overflow-y: auto;
    }
    
    .modal-content.large {
        width: 95%;
        max-height: 80vh;
    }
    
    .close {
        font-size: 1.5rem;
        right: 0.8rem;
        top: 0.8rem;
    }
    
    .product-detail-header {
        margin-bottom: 1rem;
    }
    
    .product-detail-header h2 {
        font-size: 1.5rem;
    }
    
    .product-detail-header .product-price {
        font-size: 1.5rem;
    }
    
    .product-detail-section h4 {
        font-size: 1.1rem;
    }
    
    .product-detail-footer {
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .product-detail-footer .btn {
        width: 100%;
    }
    
    /* 对比表格移动端优化 */
    .compare-table-container {
        max-height: 60vh;
    }
    
    .compare-table th,
    .compare-table td {
        padding: 0.5rem;
        font-size: 0.9rem;
    }
    
    .compare-table th:first-child,
    .compare-table td:first-child {
        font-weight: 600;
        min-width: 100px;
    }
    
    /* 按钮移动端优化 */
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .hero-buttons .btn {
        padding: 12px 25px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    .navbar .container {
        padding: 0 10px;
    }
    
    .hero {
        padding: 80px 0 40px;
    }
    
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .product-card {
        padding: 1rem;
    }
    
    .product-name {
        font-size: 1.2rem;
    }
    
    .product-price {
        font-size: 1.3rem;
    }
    
    .page-header {
        padding: 30px 0;
    }
    
    .page-header h1 {
        font-size: 1.8rem;
    }
    
    .filter-tab {
        font-size: 0.85rem;
        padding: 0.5rem 0.8rem;
        flex: 0 0 calc(50% - 0.25rem);
    }
    
    .modal-content {
        width: 98%;
        padding: 1rem;
        margin: 5% auto;
    }
}

/* 工具类 */
.text-center {
    text-align: center;
}

.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }