/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: #1e3a8a;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
    color: #64748b;
    line-height: 1.7;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border: none;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: #1e40af;
    color: white;
    border: 2px solid #1e40af;
}

.btn-primary:hover {
    background: #1d4ed8;
    border-color: #1d4ed8;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3);
}

.btn-secondary {
    background: #3b82f6;
    color: white;
    border: 2px solid #3b82f6;
}

.btn-secondary:hover {
    background: #2563eb;
    border-color: #2563eb;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn-outline {
    background: transparent;
    color: #1e40af;
    border: 2px solid #1e40af;
}

.btn-outline:hover {
    background: #1e40af;
    color: white;
    transform: translateY(-1px);
}

.btn-large {
    padding: 16px 40px;
    font-size: 16px;
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e2e8f0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar {
    padding: 1rem 0;
}

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

.nav-brand .logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #1e3a8a;
}

.nav-brand .logo img {
    transition: transform 0.3s ease;
}

.nav-brand .logo:hover img {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-item {
    margin: 0 1.5rem;
}

.nav-link {
    text-decoration: none;
    color: #475569;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
}

.nav-link:hover {
    color: #1e40af;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #1e40af;
    transition: width 0.3s ease;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: #1e3a8a;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    padding: 140px 0 100px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.05) 0%, rgba(59, 130, 246, 0.05) 100%);
    clip-path: polygon(20% 0%, 100% 0%, 100% 100%, 0% 100%);
}

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

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    color: #1e3a8a;
}

.hero-title .highlight {
    display: block;
    color: #3b82f6;
    font-weight: 600;
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: #64748b;
    line-height: 1.7;
}

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

/* Hero placeholder styles */
.hero-placeholder {
    background: white;
    border-radius: 8px;
    padding: 3rem;
    text-align: center;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
}

.cloud-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    color: #3b82f6;
    animation: float 3s ease-in-out infinite;
}

.hero-placeholder h3 {
    color: #1e3a8a;
    margin: 0;
    font-size: 1.5rem;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

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

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #1e3a8a;
    font-weight: 700;
}

/* Features Section */
.features {
    background: #f8fafc;
}

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

.feature-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 1.5rem;
}

.icon-emoji {
    font-size: 3rem;
    line-height: 1;
    margin-bottom: 1rem;
    display: block;
}

.feature-card h3 {
    color: #1e3a8a;
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.feature-card p {
    color: #64748b;
    line-height: 1.6;
}

/* Products Section */
.products {
    background: white;
}

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

.product-card {
    background: white;
    padding: 2.5rem;
    border-radius: 8px;
    border: 2px solid #e2e8f0;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    border-color: #3b82f6;
}

.product-card h3 {
    color: #1e3a8a;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.product-card p {
    margin-bottom: 1.5rem;
    color: #64748b;
}

.product-features {
    list-style: none;
    margin-bottom: 2rem;
}

.product-features li {
    padding: 0.75rem 0;
    color: #64748b;
    position: relative;
    padding-left: 1.5rem;
    border-bottom: 1px solid #f1f5f9;
}

.product-features li:last-child {
    border-bottom: none;
}

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

/* Solutions Section */
.solutions {
    background: #f8fafc;
}

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

.solution-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.solution-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.solution-card h3 {
    color: #1e3a8a;
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.solution-card p {
    color: #64748b;
}

/* Support Section */
.support {
    background: white;
}

.support-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.support-info h3 {
    color: #1e3a8a;
    margin-bottom: 1rem;
}

.contact-methods {
    margin-top: 2rem;
}

.contact-item {
    margin-bottom: 1rem;
    padding: 1.5rem;
    background: #f8fafc;
    border-radius: 8px;
    border-left: 4px solid #3b82f6;
}

.contact-item strong {
    color: #1e3a8a;
    display: inline-block;
    width: 120px;
    font-weight: 600;
}

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

.support-features h3 {
    color: #1e3a8a;
    margin-bottom: 1.5rem;
}

.support-features ul {
    list-style: none;
}

.support-features li {
    padding: 0.75rem 0;
    color: #64748b;
    position: relative;
    padding-left: 1.5rem;
    border-bottom: 1px solid #f1f5f9;
}

.support-features li:last-child {
    border-bottom: none;
}

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

/* About Section */
.about {
    background: #f8fafc;
}

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

.about-content p {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 3rem;
    color: #64748b;
}

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

.stat-item {
    text-align: center;
    padding: 2.5rem 2rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
    transition: transform 0.3s ease;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e40af;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #64748b;
    font-weight: 500;
    font-size: 1rem;
}

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

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

.footer-section h4 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
}

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

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

.footer-section a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-info p {
    color: #94a3b8;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.footer-link {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: #3b82f6;
}

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

.footer-social .social-link {
    display: inline-block;
    padding: 8px 16px;
    background: #334155;
    border-radius: 4px;
    color: #94a3b8;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.footer-social .social-link:hover {
    background: #3b82f6;
    color: white;
    transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 20px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    /* 导航栏移动端优化 */
    .navbar {
        padding: 0.75rem 0;
    }
    
    .navbar .container {
        flex-wrap: wrap;
        position: relative;
    }
    
    .nav-brand {
        flex: 1;
    }
    
    .nav-brand .logo img {
        width: 100px;
        height: auto;
    }
    
    .nav-menu {
        display: none;
        width: 100%;
        flex-direction: column;
        margin-top: 1rem;
        background: white;
        border-radius: 8px;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        padding: 1rem;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        z-index: 1000;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-item {
        margin: 0.5rem 0;
        text-align: center;
    }
    
    .nav-link {
        display: block;
        padding: 0.75rem;
        border-radius: 4px;
        transition: background-color 0.3s ease;
    }
    
    .nav-link:hover {
        background-color: #f8fafc;
    }
    
    .nav-actions {
        order: 2;
        gap: 0.5rem;
    }
    
    .nav-actions .btn {
        padding: 8px 16px;
        font-size: 12px;
    }
    
    .mobile-menu-toggle {
        display: flex;
        order: 3;
        margin-left: 1rem;
    }
    
    /* Hero区域移动端优化 */
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2rem;
        line-height: 1.3;
    }
    
    .hero-description {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .hero-actions {
        justify-content: center;
        gap: 0.75rem;
    }
    
    .hero-placeholder {
        padding: 2rem 1.5rem;
        margin-top: 1rem;
    }
    
    .cloud-icon {
        font-size: 3rem;
    }
    
    .hero-placeholder h3 {
        font-size: 1.2rem;
    }
    
    /* 特性区域移动端优化 */
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .feature-card {
        padding: 2rem 1.5rem;
    }
    
    .icon-emoji {
        font-size: 2.5rem;
    }
    
    /* 产品区域移动端优化 */
    .products-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .product-card {
        padding: 2rem 1.5rem;
    }
    
    /* 解决方案移动端优化 */
    .solutions-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .solution-card {
        padding: 2rem 1.5rem;
    }
    
    /* 技术支持移动端优化 */
    .support-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-item {
        padding: 1.25rem;
    }
    
    .contact-item strong {
        width: 100%;
        display: block;
        margin-bottom: 0.5rem;
    }
    
    /* 统计数据移动端优化 */
    .company-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .stat-item {
        padding: 1.5rem 1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    /* 页脚移动端优化 */
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .footer-social {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    /* 导航栏小屏幕优化 */
    .nav-brand .logo img {
        width: 80px;
        height: auto;
    }
    
    .nav-actions .btn {
        padding: 6px 12px;
        font-size: 11px;
    }
    
    /* Hero区域小屏幕优化 */
    .hero {
        padding: 90px 0 50px;
    }
    
    .hero-title {
        font-size: 1.75rem;
        margin-bottom: 1rem;
    }
    
    .hero-description {
        font-size: 0.95rem;
        line-height: 1.6;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
    }
    
    .btn-large {
        width: 100%;
        max-width: 280px;
        padding: 14px 24px;
        font-size: 14px;
    }
    
    .hero-placeholder {
        padding: 1.5rem 1rem;
    }
    
    .cloud-icon {
        font-size: 2.5rem;
    }
    
    .hero-placeholder h3 {
        font-size: 1rem;
    }
    
    /* 标题小屏幕优化 */
    .section-title {
        font-size: 1.75rem;
        margin-bottom: 2rem;
    }
    
    /* 卡片小屏幕优化 */
    .feature-card,
    .product-card,
    .solution-card,
    .stat-item {
        padding: 1.5rem 1rem;
    }
    
    .icon-emoji {
        font-size: 2rem;
    }
    
    .feature-card h3,
    .product-card h3,
    .solution-card h3 {
        font-size: 1.1rem;
    }
    
    .feature-card p,
    .product-card p,
    .solution-card p {
        font-size: 0.9rem;
    }
    
    /* 产品特性列表优化 */
    .product-features li {
        padding: 0.5rem 0;
        font-size: 0.9rem;
    }
    
    /* 统计数据小屏幕优化 */
    .company-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .stat-number {
        font-size: 1.75rem;
    }
    
    .stat-label {
        font-size: 0.9rem;
    }
    
    /* 联系信息优化 */
    .contact-item {
        padding: 1rem;
        font-size: 0.9rem;
    }
    
    .support-features li {
        padding: 0.5rem 0;
        font-size: 0.9rem;
    }
    
    /* 页脚小屏幕优化 */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .footer-section h4 {
        font-size: 1rem;
    }
    
    .footer-section a {
        font-size: 0.9rem;
    }
    
    .footer-info p {
        font-size: 0.8rem;
    }
    
    .footer-social .social-link {
        padding: 6px 12px;
        font-size: 12px;
    }
}

/* 超小屏幕优化 */
@media (max-width: 360px) {
    .container {
        padding: 0 8px;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .nav-brand .logo img {
        width: 70px;
        height: auto;
    }
    
    .btn-large {
        max-width: 240px;
        padding: 12px 20px;
        font-size: 13px;
    }
    
    .feature-card,
    .product-card,
    .solution-card,
    .stat-item {
        padding: 1.25rem 0.75rem;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card,
.product-card,
.solution-card,
.stat-item {
    animation: fadeInUp 0.6s ease forwards;
}

/* Focus states for accessibility */
.btn:focus,
.nav-link:focus {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .header,
    .footer {
        display: none;
    }
    
    .hero {
        background: none;
        color: #333;
    }
    
    .btn {
        border: 1px solid #333;
        background: none;
        color: #333;
    }
}