:root {
    --primary-color: #2563eb;          /* 主色调：深蓝色 */
    --primary-light: #60a5fa;          /* 浅蓝色 */
    --primary-dark: #1d4ed8;           /* 深蓝色 */
    --secondary-color: #0ea5e9;        /* 次要色：天蓝色 */
    --accent-color: #f59e0b;           /* 强调色：橙色 */
    --text-dark: #1f2937;              /* 主要文字颜色 */
    --text-light: #6b7280;             /* 次要文字颜色 */
    --background-light: #f3f4f6;       /* 浅色背景 */
    --white: #ffffff;
    --max-width: 1200px;
    --header-height: 70px;
}

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

body {
    font-family: 'Segoe UI', 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
}

/* 导航栏样式 */
header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.logo h1 {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: bold;
    font-size: 1.8rem;
}

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

.nav-links li a {
    color: #333;
    text-decoration: none;
    padding: 0.5rem 1rem;
    transition: color 0.3s ease;
    font-weight: 500;
    position: relative;
}

.nav-links li a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-links li a:hover::after {
    width: 100%;
}

.nav-links li a:hover {
    color: var(--primary-color);
}

/* 主页横幅样式 */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, 
        rgba(37, 99, 235, 0.9), 
        rgba(14, 165, 233, 0.85)), 
        url('../images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
    margin-bottom: 1.5rem;
}

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

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--accent-color);
    color: #fff;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s ease;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

.cta-button:hover {
    background: #f97316;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
}

/* 关于我们部分样式 */
.about {
    padding: 5rem 0;
    background-color: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.about h2 {
    text-align: center;
    margin-bottom: 3rem;
}

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

.feature {
    padding: 2rem;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    border: 1px solid rgba(0,0,0,0.1);
}

.feature i {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    border-color: var(--primary-light);
}

/* 页脚样式 */
footer {
    background-color: #333;
    color: #fff;
    padding: 3rem 0;
}

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

.copyright {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* 添加新的 banner 样式 */
.banner {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='0.1' fill-rule='evenodd'/%3E%3C/svg%3E");
    opacity: 0.6;
}

.banner-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.banner-item {
    position: relative;
    z-index: 1;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    border-radius: 10px;
    transition: transform 0.3s ease;
    padding: 1.5rem;
}

.banner-item:hover {
    transform: translateY(-5px);
}

.banner-item h3 {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(45deg, #fff, rgba(255,255,255,0.8));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 0.5rem;
}

.banner-item p {
    opacity: 0.9;
}

/* 添加动画关键帧 */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

/* 添加动画类 */
.animate-slide-up {
    opacity: 0;
    animation: slideUp 0.6s ease forwards;
}

.hero-content h1.animate-slide-up {
    animation-delay: 0.2s;
}

.hero-content p.animate-slide-up {
    animation-delay: 0.4s;
}

.hero-content .hero-buttons.animate-slide-up {
    animation-delay: 0.6s;
}

/* 添加悬浮形状动画 */
.hero-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 6s infinite;
}

.shape-1 {
    width: 100px;
    height: 100px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 150px;
    height: 150px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.shape-3 {
    width: 70px;
    height: 70px;
    top: 30%;
    right: 25%;
    animation-delay: 4s;
}

/* 优化特性卡片动画 */
.feature {
    transform: translateY(30px);
    opacity: 0;
    transition: all 0.6s ease;
}

.feature.animate-in {
    transform: translateY(0);
    opacity: 1;
}

.feature-icon {
    position: relative;
    display: inline-block;
    margin-bottom: 1.5rem;
}

.feature-icon::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: var(--primary-color);
    border-radius: 50%;
    left: 0;
    top: 0;
    z-index: -1;
    opacity: 0.1;
    transform: scale(0.8);
    transition: transform 0.3s ease;
}

.feature:hover .feature-icon::after {
    transform: scale(1.2);
}

/* 优化导航栏动画 */
.nav-links li a::after {
    transition: width 0.3s cubic-bezier(0.58, 0.3, 0.005, 1);
}

/* 优化按钮动画 */
.cta-button {
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.cta-button:hover::before {
    width: 300px;
    height: 300px;
}

/* 添加滚动显示动画 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 数据中心部分样式 */
.datacenter {
    padding: 6rem 0;
    background-color: var(--background-light);
}

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

.solution-item {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    border: 1px solid rgba(0,0,0,0.05);
}

.solution-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
    border-color: var(--primary-light);
}

.solution-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.solution-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.solution-features {
    list-style: none;
    margin-top: 1.5rem;
}

.solution-features li {
    padding: 0.5rem 0;
    color: var(--text-light);
    position: relative;
    padding-left: 1.5rem;
}

.solution-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* 算例展示部分样式 */
.cases {
    padding: 6rem 0;
    background: linear-gradient(to bottom, #fff, var(--background-light));
}

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

.case-item {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.case-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.case-image {
    height: 200px;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.case-item:hover .case-image img {
    transform: scale(1.1);
}

.case-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 2rem;
}

.case-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.case-details {
    list-style: none;
    margin-top: 1rem;
}

.case-details li {
    padding: 0.5rem 0;
    color: var(--text-light);
    position: relative;
    padding-left: 1.5rem;
}

.case-details li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.case-content p {
    flex: 1;
    margin-bottom: 1.5rem;
    color: var(--text-light);
}

/* 通用标题样式 */
.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.section-description {
    text-align: center;
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto 3rem;
    font-size: 1.1rem;
}

/* 添加响应式设计和浏览器兼容性优化 */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
}

/* 移动端导航栏优化 */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background: var(--white);
        flex-direction: column;
        align-items: center;
        padding: 2rem 0;
        transition: left 0.3s ease;
    }

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

    .nav-links li {
        margin: 1rem 0;
    }

    /* 添加汉堡菜单按钮 */
    .menu-toggle {
        display: block;
        cursor: pointer;
        padding: 0.5rem;
    }

    .menu-toggle span {
        display: block;
        width: 25px;
        height: 3px;
        background: var(--primary-color);
        margin: 5px 0;
        transition: all 0.3s ease;
    }
}

/* 响应式网格布局优化 */
@media (max-width: 1024px) {
    .solution-grid,
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .solution-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }
}

/* 优化图片加载 */
.case-image {
    position: relative;
    padding-top: 56.25%; /* 16:9 比例 */
}

.case-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

/* 添加加载动画 */
.case-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* 优化动画性能 */
.animate-on-scroll,
.feature,
.solution-item,
.case-item {
    will-change: transform, opacity;
}

/* 添加打印样式 */
@media print {
    .hero,
    .banner,
    .footer {
        background: none !important;
        color: #000 !important;
    }

    .case-image::before {
        display: none;
    }
}