/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    scroll-behavior: smooth;
}

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 50px;
    width: auto;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2563eb;
}

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

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

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

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

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

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1d4ed8, #2563eb);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background: transparent;
    color: #2563eb;
    border: 2px solid #2563eb;
}

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

.btn-full {
    width: 100%;
}

/* 首页部分 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding-top: 80px;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

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

.hero-visual {
    position: relative;
    height: 400px;
}

.floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: 1.5rem;
    text-align: center;
    animation: float 6s ease-in-out infinite;
}

.card-1 {
    top: 20px;
    left: 20px;
    animation-delay: 0s;
}

.card-2 {
    top: 120px;
    right: 20px;
    animation-delay: 2s;
}

.card-3 {
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 4s;
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.card-text {
    font-weight: 500;
}

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

/* 通用部分样式 */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1f2937;
}

.section-subtitle {
    font-size: 1.125rem;
    color: #6b7280;
    max-width: 600px;
    margin: 0 auto;
}

/* 产品介绍部分 */
.products {
    padding: 6rem 0;
    background: #f8fafc;
}

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

.product-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px rgba(0, 0, 0, 0.1);
}

.product-icon {
    margin-bottom: 1.5rem;
}

.icon-bg {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bg-blue { background: linear-gradient(135deg, #3b82f6, #1d4ed8); }
.bg-green { background: linear-gradient(135deg, #10b981, #059669); }
.bg-purple { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }

.icon {
    font-size: 1.5rem;
}

.product-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1f2937;
}

.product-description {
    color: #6b7280;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

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

.product-features li {
    color: #374151;
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.5rem;
}

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

/* 解决方案部分 */
.solutions {
    padding: 6rem 0;
    background: white;
}

.solutions-content {
    max-width: 800px;
    margin: 0 auto;
}

.solution-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    padding: 2rem;
    border-radius: 16px;
    background: #f8fafc;
    transition: transform 0.3s ease;
}

.solution-item:hover {
    transform: translateX(10px);
}

.solution-number {
    font-size: 2rem;
    font-weight: 700;
    color: #2563eb;
    min-width: 60px;
}

.solution-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1f2937;
}

.solution-info p {
    color: #6b7280;
    line-height: 1.6;
}

/* 关于我们部分 */
.about {
    padding: 6rem 0;
    background: linear-gradient(135deg, #1f2937 0%, #374151 100%);
    color: white;
}

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

.about .section-title {
    color: white;
}

.about .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.about-description p {
    margin-bottom: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
}

.about-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.value-item h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #3b82f6;
}

.value-item p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #3b82f6;
    display: block;
}

.stat-label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* 联系我们部分 */
.contact {
    padding: 6rem 0;
    background: #f8fafc;
}

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

/* 新的居中布局 */
.contact-content-centered {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.contact-cta {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 3rem 2rem;
    border-radius: 16px;
    margin-top: 2rem;
}

.contact-cta h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.contact-cta p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.contact-cta .btn {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid white;
    color: white;
    backdrop-filter: blur(10px);
}

.contact-cta .btn:hover {
    background: white;
    color: #667eea;
    transform: translateY(-2px);
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.contact-details h4 {
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.25rem;
}

.contact-details p {
    color: #6b7280;
}

.contact-details a {
    color: #3b82f6;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.contact-details a:hover {
    color: #2563eb;
    text-decoration: underline;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

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

.form-input,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: #3b82f6;
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

/* 下载部分 */
.download {
    padding: 5rem 0;
    background: #f8fafc;
}

.download-content {
    margin-top: 3rem;
}

.download-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.download-item {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.download-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.download-icon {
    margin-bottom: 1.5rem;
}

.app-icon {
    width: 80px;
    height: 80px;
    object-fit: contain;
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.download-item h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.download-item p {
    color: #6b7280;
    margin-bottom: 1.5rem;
}

.download-btn {
    margin-bottom: 1rem;
}

.qr-code {
    margin-top: 1rem;
}

.qr-image {
    width: 120px;
    height: 120px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.qr-text {
    font-size: 0.875rem;
    color: #6b7280;
    margin: 0;
}

/* 敬请期待样式 */
.coming-soon {
    margin-top: 1rem;
    padding: 2rem 1rem;
    background: linear-gradient(135deg, #f3f4f6, #e5e7eb);
    border-radius: 12px;
    border: 2px dashed #d1d5db;
}

.coming-soon-text {
    font-size: 1.125rem;
    font-weight: 600;
    color: #6b7280;
    margin: 0;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.coming-soon-text::before,
.coming-soon-text::after {
    content: "⏰";
    font-size: 1rem;
}

/* 页脚 */
.footer {
    background: #1f2937;
    color: white;
    padding: 2rem 0;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-logo-img {
    height: 50px;
    width: auto;
}

.footer-logo-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: #3b82f6;
}

.footer-text {
    text-align: right;
}

.footer-text p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        display: none;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .solution-item {
        flex-direction: column;
        gap: 1rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-stats {
        flex-direction: row;
        justify-content: space-around;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-info-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .contact-cta {
        padding: 2rem 1.5rem;
    }
    
    .contact-cta h3 {
        font-size: 1.5rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .footer-text {
        text-align: center;
    }
    
    .about-values {
        grid-template-columns: 1fr;
    }
    
    .download-options {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .download-item {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
}