* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
}

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

/* Header */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 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);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 50px; 
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
}

.logo-subtitle {
    font-size: 0.7em;
    font-weight: normal;
    opacity: 0.8;
    margin-left: 0.3rem;
    white-space: nowrap;
}

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

.nav-links a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
}

.nav-links a:hover {
    opacity: 0.8;
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
    z-index: 1000;
}

.mobile-menu.active {
    display: block;
}

.mobile-menu ul {
    list-style: none;
    padding: 1rem;
    margin: 0;
}

.mobile-menu li {
    margin-bottom: 1rem;
}

.mobile-menu a {
    color: white;
    text-decoration: none;
    font-size: 1.1rem;
    display: block;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.mobile-menu a:hover {
    opacity: 0.8;
}

.mobile-cta-buttons {
    padding: 1rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.mobile-cta-buttons .btn {
    display: block;
    width: 100%;
    text-align: center;
    margin-bottom: 0.5rem;
}

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

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s ease;
    font-weight: 600;
}

.btn-primary {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    color: white;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    color: white;
    padding: 120px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero h1 {
    font-size: 3.2rem;
    margin-bottom: 1.5rem;
    font-weight: 800;
    line-height: 1.1;
}

.hero p {
    font-size: 1.4rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
    line-height: 1.6;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 300;
}

/* Section Styles */
.section {
    padding: 80px 0;
}

.section h2 {
    text-align: center;
    font-size: 2.4rem;
    margin-bottom: 3rem;
    color: #333;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Problem Section */
.problem {
    background: #f8f9fa;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.problem-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    transition: all 0.3s ease;
}

.problem-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.problem-item i {
    font-size: 3rem;
    color: #ff6b6b;
    margin-bottom: 1rem;
}

.problem-item h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #333;
    font-weight: 600;
}

/* Features Section */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

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

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #333;
}

/* Detailed Features */
.features-detailed {
    background: #f8f9fa;
}

.feature-detail {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.feature-detail h3 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.feature-detail ul {
    list-style: none;
    padding: 0;
}

.feature-detail li {
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    position: relative;
}

.feature-detail li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
}

/* Comparison Table */
.comparison-table {
    overflow-x: auto;
    margin-top: 3rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #eee;
}

th {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-weight: 600;
}

.check { color: #28a745; font-weight: bold; }
.cross { color: #dc3545; font-weight: bold; }
.warning { color: #ffc107; font-weight: bold; }

/* Testimonials */
.testimonials {
    background: #f8f9fa;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.testimonial-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.testimonial-card .quote {
    font-style: italic;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.testimonial-card .author {
    font-weight: bold;
    color: #667eea;
}

.testimonial-card .effect {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: #666;
}

/* Pricing */
.pricing {
    background: #f8f9fa;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: auto auto auto auto 1fr auto;
    gap: 2rem;
    margin-top: 3rem;
}

.pricing-card {
    display: grid;
    grid-row: span 6;
    grid-template-rows: subgrid;
    
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
    border: 3px solid transparent; 
}

.pricing-card .price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    white-space: nowrap;
}

.pricing-card.featured {
    border-color: #667eea; 
}

.pricing-card .badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: #ff6b6b;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.price {
    font-size: 3rem;
    font-weight: bold;
    color: #667eea;
    margin: 0.1rem 0;
}

.price span {
    font-size: 1rem;
    color: #666;
}

.pricing-card p {
    margin-top: 0;
    margin-bottom: 0;
}

.pricing-card ul {
    list-style: none;
    padding-left: 0;
}

.pricing-card li {
    margin-bottom: 0.5rem;
}

.pricing-card li i {
    color: #28a745;
    margin-right: 0.5rem;
}

.pricing-header {
    min-height: 240px; 
}

.price, .price-contact {
    min-height: 80px; 
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: row; 
}

.pricing-tagline {
    min-height: 54px; 
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.pricing-spec {
    min-height: 30px;
}

.pricing-recommend {
    padding: 1rem;
    border-radius: 10px;
    margin: 0.1rem 0;
    text-align: left;
}

.recommend-green {
    background: #e8f5e8;
    border-left: 4px solid #28a745;
}

.recommend-yellow {
    background: #fff3cd;
    border-left: 4px solid #ffc107;
}

.recommend-blue {
    background: #d1ecf1;
    border-left: 4px solid #17a2b8;
}

/* FAQ */
.faq-item {
    background: white;
    margin-bottom: 1rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-answer {
    padding: 0 1.5rem 1.5rem;
    display: none;
}

.faq-answer.active {
    display: block;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    padding: 80px 0;
}

.cta-section h2 {
    color: white;
}

/* Contact */
.contact {
    background: #f8f9fa;
}

.contact-info {
    display: inline-block;
    text-align: left;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.contact-info p {
    margin-bottom: 1rem;
}

.contact-info i {
    color: #667eea;
    margin-right: 0.5rem;
}

/* Footer */
.footer {
    background: #333;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: flex; 
    gap: 4rem; 
    margin-bottom: 2rem;
}

.footer-content div{
    max-width: 300px;
}

.footer h4 {
    margin-bottom: 1rem;
    color: #667eea;
}

.footer a {
    color: #ccc;
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #555;
    color: #ccc;
}

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

.social-link i {
    font-size: 2.5rem;
}


/* Trial Section */
.trial-section {
    text-align: center;
    margin-top: 3rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}


/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    z-index: 1001;
}

.back-to-top:hover {
    transform: translateY(-2px) scale(1.1);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:active {
    transform: translateY(0) scale(0.95);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .back-to-top {
        bottom: 80px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .back-to-top {
        bottom: 70px;
        right: 15px;
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}

/* Mobile Fixed CTA */
.mobile-fixed-cta {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
}

.mobile-cta-btn {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    font-size: 0.9rem;
    white-space: nowrap;
    box-shadow: 0 8px 25px rgba(255, 107, 107, 0.4);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: pulse 2s infinite;
}

.mobile-cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(255, 107, 107, 0.6);
}

@keyframes pulse {
    0% { box-shadow: 0 8px 25px rgba(255, 107, 107, 0.4); }
    50% { box-shadow: 0 8px 25px rgba(255, 107, 107, 0.7); }
    100% { box-shadow: 0 8px 25px rgba(255, 107, 107, 0.4); }
}

/* Responsive */
@media (max-width: 768px) {
    /* 导航栏适配 */
    .nav-links {
        display: none;
    }

    .cta-buttons {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .nav {
        position: relative;
        padding: 0.8rem 1rem;
    }

    .logo {
        font-size: 1.5rem;
        flex-direction: column;
        align-items: flex-start;
    }

    .logo-subtitle {
        font-size: 0.6em;
        margin-left: 0;
        margin-top: -0.2rem;
        line-height: 1;
    }

    /* 移动端菜单 */
    .mobile-menu {
        position: fixed;
        top: 0;
        left: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        z-index: 9999;
        transition: left 0.3s ease;
        padding: 2rem 1.5rem;
        box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    }

    .mobile-menu.active {
        left: 0;
    }

    .mobile-menu ul {
        list-style: none;
        padding: 0;
        margin: 0 0 2rem 0;
    }

    .mobile-menu li {
        margin-bottom: 1rem;
    }

    .mobile-menu a {
        color: white;
        text-decoration: none;
        font-size: 1.1rem;
        font-weight: 500;
        display: block;
        padding: 0.5rem 0;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }

    .mobile-cta-buttons {
        display: flex;
        flex-direction: column;
        gap: 1rem;
    }

    .mobile-cta-buttons .btn {
        text-align: center;
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }

    /* Hero区域适配 */
    .hero {
        padding: 6rem 1rem 4rem;
        text-align: center;
    }

    .hero h1 {
        font-size: 2.2rem;
        line-height: 1.2;
        margin-bottom: 1.5rem;
    }

    .hero p {
        font-size: 1rem;
        line-height: 1.6;
        margin-bottom: 2rem;
    }

    .hero .cta-buttons {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }

    .hero .cta-buttons .btn {
        width: 100%;
        max-width: 280px;
        padding: 1rem 2rem;
        font-size: 1rem;
    }

    /* 内容区域适配 */
    .section {
        padding: 3rem 1rem;
    }

    .section h2 {
        font-size: 1.8rem;
        line-height: 1.3;
        margin-bottom: 2rem;
    }

    .container {
        padding: 0 1rem;
    }

    /* 问题区域适配 */
    .problem-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .problem-item {
        padding: 1.5rem;
        text-align: center;
    }

    .problem-item i {
        font-size: 2.5rem;
        margin-bottom: 1rem;
    }

    .problem-item h4 {
        font-size: 1.1rem;
        line-height: 1.4;
    }

    /* 功能区域适配 */
    .features-grid {
        grid-template-columns: 1fr !important;
        gap: 1.5rem !important;
    }

    .feature-card {
        transform: none !important;
        padding: 2rem 1.5rem;
    }

    .feature-card h3 {
        font-size: 1.5rem;
    }

    .feature-card p {
        font-size: 1rem;
    }

    /* 功能详细区域适配 */
    .feature-detail {
        margin-bottom: 2rem;
    }

    .feature-detail h3 {
        font-size: 1.3rem;
        margin-bottom: 1rem;
    }

    .feature-detail > div {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    /* 比较表格适配 */
    .comparison-table {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .comparison-table table {
        min-width: 600px;
        font-size: 0.9rem;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 0.8rem 0.5rem;
    }

    /* 客户评价适配 */
    .testimonial-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .testimonial-card {
        padding: 1.5rem;
    }

    /* 价格区域适配 */
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .pricing-card {
        padding: 2rem 1.5rem;
    }

    .pricing-card.featured {
        transform: none;
        margin: 0;
    }

    .pricing-card h3 {
        font-size: 1.5rem;
    }

    .price {
        font-size: 2.5rem;
    }

    /* FAQ适配 */
    .faq-item {
        margin-bottom: 1rem;
    }

    .faq-question {
        padding: 1rem;
        font-size: 1rem;
    }

    .faq-answer {
        padding: 0 1rem 1rem;
        font-size: 0.95rem;
    }

    /* 页脚适配 */
    .footer {
        padding: 3rem 1rem 5rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .footer h4 {
        font-size: 1.2rem;
        margin-bottom: 1rem;
    }

    .footer a {
        display: block;
        margin-bottom: 0.5rem;
        font-size: 0.9rem;
    }

    .social-links {
        justify-content: center;
        margin-top: 1rem;
    }

    /* 移动端固定CTA */
    .mobile-fixed-cta {
        display: block;
    }

    /* 返回顶部按钮 */
    .back-to-top {
        bottom: 80px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    /* 导航栏小屏幕适配 */
    .logo {
        font-size: 1.3rem;
    }

    .logo-subtitle {
        font-size: 0.55em;
        margin-top: -0.3rem;
    }

    .nav {
        padding: 0.6rem 0.8rem;
    }

    /* 移动端菜单小屏幕适配 */
    .mobile-menu {
        width: 90%;
        max-width: 280px;
        padding: 1.5rem 1rem;
    }

    .mobile-menu a {
        font-size: 1rem;
        padding: 0.4rem 0;
    }

    /* Hero区域小屏幕适配 */
    .hero {
        padding: 5rem 0.8rem 3rem;
    }

    .hero h1 {
        font-size: 1.8rem;
        line-height: 1.2;
    }

    .hero p {
        font-size: 0.95rem;
        line-height: 1.5;
    }

    .hero .cta-buttons .btn {
        padding: 0.9rem 1.5rem;
        font-size: 0.95rem;
        max-width: 260px;
    }

    /* 内容区域小屏幕适配 */
    .section {
        padding: 2.5rem 0.8rem;
    }

    .section h2 {
        font-size: 1.6rem;
        line-height: 1.3;
    }

    .container {
        padding: 0 0.8rem;
    }

    /* 问题区域小屏幕适配 */
    .problem-item {
        padding: 1.2rem;
    }

    .problem-item i {
        font-size: 2rem;
    }

    .problem-item h4 {
        font-size: 1rem;
        line-height: 1.3;
    }

    .problem-item p {
        font-size: 0.85rem;
    }

    /* 功能卡片小屏幕适配 */
    .feature-card {
        padding: 1.5rem 1rem;
    }

    .feature-card h3 {
        font-size: 1.3rem;
    }

    .feature-card p {
        font-size: 0.95rem;
    }

    /* 功能详细区域小屏幕适配 */
    .feature-detail h3 {
        font-size: 1.2rem;
    }

    .feature-detail ul {
        font-size: 0.9rem;
    }

    /* 比较表格小屏幕适配 */
    .comparison-table table {
        min-width: 500px;
        font-size: 0.8rem;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 0.6rem 0.3rem;
    }

    /* 客户评价小屏幕适配 */
    .testimonial-card {
        padding: 1.2rem;
    }

    .testimonial-card .author {
        font-size: 1rem;
    }

    /* 价格卡片小屏幕适配 */
    .pricing-card {
        padding: 1.5rem 1rem;
    }

    .pricing-card h3 {
        font-size: 1.3rem;
    }

    .price {
        font-size: 2.2rem;
    }

    .pricing-card ul {
        font-size: 0.9rem;
    }

    /* FAQ小屏幕适配 */
    .faq-question {
        padding: 0.8rem;
        font-size: 0.95rem;
    }

    .faq-answer {
        padding: 0 0.8rem 0.8rem;
        font-size: 0.9rem;
    }

    /* 页脚小屏幕适配 */
    .footer {
        padding: 2.5rem 0.8rem 4rem;
    }

    .footer h4 {
        font-size: 1.1rem;
    }

    .footer a {
        font-size: 0.85rem;
    }

    /* 移动端固定CTA小屏幕适配 */
    .mobile-cta-btn {
        padding: 0.8rem 1.2rem;
        font-size: 0.85rem;
    }

    /* 返回顶部按钮小屏幕适配 */
    .back-to-top {
        bottom: 70px;
        right: 15px;
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}

/* 平板端适配 */
@media (max-width: 1024px) and (min-width: 769px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr) !important;
        gap: 1.5rem !important;
    }
    
    .hero h1 {
        font-size: 3rem;
    }
    
    .section h2 {
        font-size: 2.2rem;
    }
}

/* 移动端通用优化 */
@media (max-width: 768px) {
    /* 触摸友好的按钮 */
    .btn {
        min-height: 44px;
        min-width: 44px;
        touch-action: manipulation;
    }
    
    /* 触摸友好的链接 */
    a {
        min-height: 44px;
        display: inline-flex;
        align-items: center;
        touch-action: manipulation;
    }
    
    /* 改善滚动体验 */
    body {
        -webkit-overflow-scrolling: touch;
        overflow-x: hidden;
    }
    
    /* 防止水平滚动 */
    * {
        max-width: 100%;
        box-sizing: border-box;
    }
    
    /* 改善文本选择 */
    p, li, span {
        -webkit-user-select: text;
        -moz-user-select: text;
        -ms-user-select: text;
        user-select: text;
    }
    
    /* 改善表单元素 */
    input, textarea, select {
        font-size: 16px; /* 防止iOS缩放 */
    }
}

/* 超小屏幕适配 */
@media (max-width: 360px) {
    .hero h1 {
        font-size: 1.6rem;
    }
    
    .section h2 {
        font-size: 1.4rem;
    }
    
    .feature-card h3 {
        font-size: 1.2rem;
    }
    
    .pricing-card h3 {
        font-size: 1.2rem;
    }
    
    .price {
        font-size: 2rem;
    }
    
    .mobile-menu {
        width: 95%;
        max-width: 260px;
    }
}