/* 浏览器兼容性CSS重置 */
* {
    box-sizing: border-box;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 关键CSS - 首屏渲染优化 */
body {
    font-family: 'Noto Sans', 'Noto Sans SC', 'Roboto', 'Open Sans', Arial, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  margin: 0;
  padding: 0;
    line-height: 1.6;
    color: #333;
  background-color: #fff;
  font-display: swap;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 性能优化 */
* {
  box-sizing: border-box;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* 减少重绘重排 */
.navbar, .hero, .footer {
  will-change: transform;
}

/* 优化动画性能 */
.floating-elements .element {
  will-change: transform;
  transform: translateZ(0);
}

/* 添加加载状态 */
.loading {
  opacity: 0;
  transition: opacity 0.3s ease-in;
}

.loaded {
  opacity: 1;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    -webkit-transition: all 0.3s ease;
    -moz-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 100%;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: #2563eb;
}

.nav-logo i {
    margin-right: 0.5rem;
    font-size: 2rem;
}

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

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #2563eb;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #2563eb;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 首页英雄区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    color: white !important;
    position: relative;
    overflow: hidden;
}

/* 轮播背景图 */
.hero-backgrounds {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    -webkit-transition: opacity 1s ease-in-out;
    -moz-transition: opacity 1s ease-in-out;
    -o-transition: opacity 1s ease-in-out;
    transition: opacity 1s ease-in-out;
}

.hero-background.active {
    opacity: 1;
}

/* 轮播指示器 */
.hero-indicators {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.5rem;
    z-index: 15;
}

.hero-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.hero-indicator.active {
    background: white;
    transform: scale(1.2);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
    z-index: 1;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 10;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 10;
    background: rgba(0, 0, 0, 0.3);
    padding: 2rem;
    border-radius: 15px;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: white !important;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    color: white !important;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    color: white !important;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: center;
}

.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    -webkit-transition: all 0.3s ease;
    -moz-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
    cursor: pointer;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

.btn-primary {
    background: #2563eb;
    color: white;
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
}

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

.btn-secondary:hover {
    background: white;
    color: #2563eb;
    transform: translateY(-2px);
}

.hero-image {
    position: relative;
    height: 400px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.hero-image-carousel {
    position: relative;
    width: 100%;
    height: 100%;
}

.hero-image-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    border-radius: 20px;
}

.hero-image-slide.active {
    opacity: 1;
}

.hero-image-indicators {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.5rem;
    z-index: 10;
}

.hero-image-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    transition: all 0.3s ease;
}

.hero-image-indicator.active {
    background: white;
    transform: scale(1.3);
}

.element-1 {
    top: 20%;
    left: 20%;
    animation-delay: 0s;
}

.element-2 {
    top: 60%;
    right: 20%;
    animation-delay: 1.5s;
}

.element-3 {
    bottom: 20%;
    left: 30%;
    animation-delay: 3s;
}

.element-4 {
    top: 40%;
    right: 40%;
    animation-delay: 4.5s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* 产品服务区域 */
.products {
    padding: 5rem 0;
    background: #f8fafc;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.section-header h2 {
    font-size: 2.5rem;
    color: #1e293b;
    margin-bottom: 1rem;
    text-align: center;
    width: 100%;
}

.section-header p {
    font-size: 1.1rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    width: 100%;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    justify-content: center;
    align-items: start;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.product-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    text-align: center;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.product-icon {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    font-size: 2.5rem;
    color: white;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.product-card h3 {
    font-size: 1.6rem;
    color: #1e293b;
    margin-bottom: 1.2rem;
    font-weight: 600;
}

.product-card p {
    color: #64748b;
    margin-bottom: 2rem;
    line-height: 1.6;
    font-size: 1.05rem;
}

.product-card ul {
    list-style: none;
    text-align: left;
    margin-top: auto;
}

.product-card li {
    padding: 0.6rem 0;
    color: #64748b;
    position: relative;
    padding-left: 1.8rem;
    font-size: 1rem;
}

.product-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

/* 解决方案区域 */
.solutions {
    padding: 5rem 0;
    background: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
    justify-content: center;
    align-items: start;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.solution-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.solution-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.solution-card:hover .learn-more {
    gap: 1rem;
    color: #1d4ed8;
}

.solution-image {
    height: 220px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
    color: white;
    position: relative;
    overflow: hidden;
}

.solution-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 100%);
    pointer-events: none;
}

.solution-content {
    padding: 2.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.solution-content h3 {
    font-size: 1.6rem;
    color: #1e293b;
    margin-bottom: 1.2rem;
    font-weight: 600;
}

.solution-content p {
    color: #64748b;
    margin-bottom: 2rem;
    line-height: 1.6;
    font-size: 1.05rem;
}

.learn-more {
    color: #2563eb;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    font-size: 1.05rem;
    margin-top: auto;
}

.learn-more:hover {
    gap: 1rem;
}

/* 关于我们区域 */
.about {
    padding: 5rem 0;
    background: #f8fafc;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
    width: 100%;
    padding: 0 2rem;
}

.about-text h2 {
    font-size: 2.5rem;
    color: #1e293b;
    margin-bottom: 1.5rem;
}

.about-text p {
    color: #64748b;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    justify-content: center;
    width: 100%;
    padding: 0 2rem;
}

.stat {
    text-align: center;
    padding: 1.5rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.stat h3 {
    font-size: 2.5rem;
    color: #2563eb;
    margin-bottom: 0.5rem;
}

.stat p {
    color: #64748b;
    font-weight: 500;
}

.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.team-photo {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: white;
}

/* 联系我们区域 */
.contact {
    padding: 5rem 0;
    background: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    width: 100%;
    padding: 0 2rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: #f8fafc;
    border-radius: 15px;
}

.contact-item i {
    font-size: 2rem;
    color: #2563eb;
    width: 60px;
    text-align: center;
}

.contact-item h3 {
    color: #1e293b;
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: #64748b;
}

.contact-form {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 20px;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
}

/* 页脚 */
.footer {
    background: #1e293b;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2.5rem;
    margin-bottom: 2rem;
    justify-content: center;
    align-items: start;
    width: 100%;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 2rem;
}

/* 大屏幕：4列布局，公司信息占据更多空间 */
@media (min-width: 1024px) {
    .footer-content {
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 3rem;
    }
}

/* 中等屏幕：2列布局，公司信息占据整行 */
@media (min-width: 768px) and (max-width: 1023px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    .footer-content > .footer-section:first-child {
        grid-column: 1 / -1;
    }
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.6rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
    color: #f8fafc;
    flex-wrap: wrap; /* 允许换行 */
    gap: 0.5rem;
}

.footer-logo i {
    margin-right: 0.8rem;
    font-size: 2.2rem;
    color: #3b82f6;
    flex-shrink: 0; /* 图标不收缩 */
}

.footer-logo span {
    word-break: break-word; /* 允许长文本换行 */
    overflow-wrap: break-word;
}

.footer-section {
    min-width: 0; /* 允许内容收缩 */
    display: flex;
    flex-direction: column;
}

.footer-section:first-child {
    /* 公司信息列：允许内容自适应 */
    min-width: 200px;
}

.footer-section h3 {
    margin-bottom: 1.2rem;
    color: #f8fafc;
    font-size: 1.2rem;
    font-weight: 600;
    white-space: nowrap; /* 标题不换行 */
}

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

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section ul li a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 1rem;
    line-height: 1.5;
    word-break: break-word; /* 允许长文本换行 */
    overflow-wrap: break-word;
    display: inline-block;
}

.footer-section ul li a:hover {
    color: #2563eb;
}

.social-links {
    display: flex;
    gap: 1.2rem;
    margin-top: 1.5rem;
    flex-wrap: wrap; /* 允许换行 */
    align-items: center;
}

.social-links a {
    width: 45px;
    height: 45px;
    background: #374151;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 1.2rem;
}

.social-links a:hover {
    background: #2563eb;
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: #9ca3af;
    max-width: 1400px;
    margin: 0 auto;
    padding-left: 2rem;
    padding-right: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.footer-bottom p {
    margin: 0;
    font-size: 1rem;
    line-height: 1.8;
    word-break: break-word; /* 允许长文本换行 */
    overflow-wrap: break-word;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.footer-bottom p a {
    color: #9ca3af;
    text-decoration: underline;
    transition: color 0.3s ease;
    font-size: 0.9rem;
}

.footer-bottom p a:hover {
    color: #3b82f6;
}

/* 回到顶部按钮 */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: #2563eb;
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.scroll-to-top:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.4);
}

.scroll-to-top.show {
    display: flex;
}

/* 响应式设计 */
/* 大屏幕设备 */
@media (min-width: 1200px) {
    .hero-title {
        font-size: 4rem;
    }
    
    .hero-description {
        font-size: 1.3rem;
    }
    
    .container {
        max-width: 1400px;
    }
}

/* 中等屏幕设备 */
@media (max-width: 1199px) and (min-width: 769px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
}

/* 平板设备 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

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

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 0 15px;
    }
    
    .hero-content {
        padding: 1.5rem;
        margin: 0 10px;
    }
    
    .hero-image {
        height: 300px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 0 1rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        padding: 0 1rem;
    }

    .stats {
        grid-template-columns: 1fr;
        padding: 0 1rem;
    }

    .products-grid,
    .solutions-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 2rem;
        padding: 0 1rem;
    }
    
    .solution-card {
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    }
    
    .solution-image {
        height: 200px;
        font-size: 3rem;
    }
    
    .solution-content {
        padding: 2rem;
    }
    
    .product-card {
        padding: 2rem;
    }
    
    .product-icon {
        width: 80px;
        height: 80px;
        font-size: 2rem;
        margin-bottom: 1.5rem;
    }

    .team-photo {
        width: 200px;
        height: 200px;
        font-size: 3rem;
    }
    
    .footer-content {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 2rem;
        padding: 0 1rem;
    }
    
    /* 平板：2列布局，公司信息占据整行 */
    .footer-content > .footer-section:first-child {
        grid-column: 1 / -1;
    }
    
    .footer-bottom {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

/* 小屏幕手机 */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
        margin-bottom: 1rem;
    }
    
    .hero-description {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .hero-content {
        padding: 1rem;
        margin: 0 5px;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }

    .products-grid,
    .solutions-grid,
    .about-content,
    .contact-content,
    .stats {
        padding: 0 0.5rem;
    }
    
    .product-card {
        padding: 1.5rem;
    }
    
    .product-icon {
        width: 70px;
        height: 70px;
        font-size: 1.8rem;
        margin-bottom: 1.2rem;
    }
    
    .product-card h3 {
        font-size: 1.4rem;
    }
    
    .product-card p {
        font-size: 1rem;
    }
    
    .solution-card {
        box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    }
    
    .solution-image {
        height: 180px;
        font-size: 2.5rem;
    }
    
    .solution-content {
        padding: 1.5rem;
    }
    
    .solution-content h3 {
        font-size: 1.4rem;
    }
    
    .solution-content p {
        font-size: 1rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 0 1rem;
    }
    
    .footer-logo {
        font-size: 1.4rem;
        margin-bottom: 1rem;
    }
    
    .footer-logo i {
        font-size: 2rem;
    }
    
    .footer-section {
        text-align: center; /* 小屏幕居中显示 */
    }
    
    .footer-section:not(:first-child) {
        text-align: left; /* 列表项左对齐 */
    }
    
    .footer-section h3 {
        font-size: 1.1rem;
    }
    
    .footer-bottom {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }
    
    .scroll-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
}

/* 超小屏幕手机 */
@media (max-width: 360px) {
    .hero-title {
        font-size: 1.5rem;
    }
    
    .hero-description {
        font-size: 0.9rem;
    }
    
    .hero-content {
        padding: 0.8rem;
    }
    
    .btn {
        padding: 0.7rem 1.2rem;
        font-size: 0.8rem;
    }
    
    .nav-logo span {
        font-size: 1rem;
    }

    .products-grid,
    .solutions-grid,
    .about-content,
    .contact-content,
    .stats {
        padding: 0 0.25rem;
    }
}

/* 横屏模式 */
@media (orientation: landscape) and (max-height: 500px) {
    .hero {
        min-height: 100vh;
        padding: 2rem 0;
    }
    
    .hero-content {
        padding: 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
        margin-bottom: 0.5rem;
    }
    
    .hero-description {
        font-size: 0.9rem;
        margin-bottom: 1rem;
    }
}

/* 高分辨率屏幕 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .hero-background {
        background-size: cover;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .btn:hover {
        transform: none;
    }
    
    .product-card:hover {
        transform: none;
    }
    
    .solution-card:hover {
        transform: none;
    }
}