{
    --primary: #3b82f6;
    --secondary: #10b981;
    --dark: #1e293b;
    --light: #f8fafc;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    scroll-behavior: smooth;
    background-color: #f8fafc;
}

/* 导航栏样式 */
nav {
    background-color: white;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    position: sticky;
    top: 0;
    z-index: 50;
}

.nav-container {
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
}

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

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1f2937;
}

.nav-logo .chinese {
    color: #3b82f6;
}

.nav-logo .english {
    color: #3b82f6;
    font-size: 0.625rem;
}

.nav-links {
    display: none;
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
        align-items: center;
        gap: 2rem;
    }
}

.nav-link {
    color: #1f2937;
    position: relative;
}

.nav-link {
    color: #3b82f6;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #3b82f6;
    transition: width 0.3s ease;
}

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

/* 英雄区域样式 */
.hero {
    background: linear-gradient(135deg, #3b82f6 0%, #10b981 100%);
    color: white;
    padding-top: 5rem;
    padding-bottom: 5rem;
}

.hero-container {
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    display: flex;
    flex-direction: column;
}

@media (min-width: 768px) {
    .hero-container {
        flex-direction: row;
        align-items: center;
    }
}

.hero-content {
    width: 100%;
    margin-bottom: 2.5rem;
}

@media (min-width: 768px) {
    .hero-content {
        width: 50%;
        margin-bottom: 0;
    }
}

.hero-title {
    font-size: 2.25rem;
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 1rem;
}

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

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

@media (min-width: 640px) {
    .hero-buttons {
        flex-direction: row;
        gap: 1rem;
    }
}

.hero-primary-btn {
    background-color: white;
    color: #2563eb;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-align: center;
}

.hero-primary-btn {
    background-color: #f3f4f6;
}

.hero-secondary-btn {
    border: 2px solid white;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-align: center;
}

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

.hero-image {
    width: 100%;
    display: flex;
    justify-content: center;
}

@media (min-width: 768px) {
    .hero-image {
        width: 50%;
    }
}

.hero-image img {
    border-radius: 0.5rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    max-width: 24rem;
}

/* 服务区域样式 */
.services {
    background-color: white;
    padding-top: 4rem;
    padding-bottom: 4rem;
}

.services-container {
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.services-header {
    text-align: center;
    margin-bottom: 4rem;
}

.services-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1rem;
}

.services-subtitle {
    color: #4b5563;
    max-width: 42rem;
    margin-left: auto;
    margin-right: auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 2rem;
}

@media (min-width: 768px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.service-card {
    background-color: #f9fafb;
    border-radius: 0.75rem;
    padding: 2rem;
    transition: all 0.3s ease;
}

.service-card {
    transform: translateY(-0.3125rem);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.service-icon {
    width: 4rem;
    height: 4rem;
    background-color: #dbeafe;
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.service-icon.blue {
    background-color: #dbeafe;
    color: #2563eb;
}

.service-icon.green {
    background-color: #d1fae5;
    color: #059669;
}

.service-icon.purple {
    background-color: #ede9fe;
    color: #7c3aed;
}

.service-icon.yellow {
    background-color: #fef3c7;
    color: #d97706;
}

.service-icon.red {
    background-color: #fee2e2;
    color: #dc2626;
}

.service-icon.indigo {
    background-color: #e0e7ff;
    color: #4f46e5;
}

.service-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.75rem;
}

/* 关于我们区域样式 */
.about {
    background-color: #f9fafb;
    padding-top: 4rem;
    padding-bottom: 4rem;
}

.about-container {
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

@media (min-width: 768px) {
    .about-container {
        flex-direction: row;
    }
}

.about-image {
    width: 100%;
    margin-bottom: 2.5rem;
}

@media (min-width: 768px) {
    .about-image {
        width: 50%;
        margin-bottom: 0;
        padding-right: 2.5rem;
    }
}

.about-image img {
    border-radius: 0.5rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    width: 100%;
}

.about-content {
    width: 100%;
}

@media (min-width: 768px) {
    .about-content {
        width: 50%;
    }
}

.about-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1.5rem;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-box {
    background-color: white;
    padding: 1rem;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2563eb;
    margin-bottom: 0.5rem;
}

.stat-text {
    color: #4b5563;
}

.about-btn {
    display: inline-block;
    background-color: #2563eb;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
}

.about-btn {
    background-color: #1d4ed8;
}

/* 联系我们区域样式 */
.contact {
    background-color: #f9fafb;
    padding-top: 4rem;
    padding-bottom: 4rem;
}

.contact-container {
    max-width: 72rem;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.contact-card {
    background-color: white;
    border-radius: 0.75rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    overflow: hidden;
}

@media (min-width: 768px) {
    .contact-card {
        display: flex;
    }
}

.contact-info {
    background-color: #2563eb;
    color: white;
    padding: 2rem;
}

@media (min-width: 768px) {
    .contact-info {
        width: 50%;
    }
}

.contact-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.contact-detail {
    margin-bottom: 1.5rem;
}

.contact-detail-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
}

.contact-detail-title i {
    margin-right: 0.5rem;
}

.contact-social {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

/* 响应式菜单按钮样式 */
.mobile-menu-btn {
    display: block;
}

@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }
}

.mobile-menu-btn svg {
    width: 1.5rem;
    height: 1.5rem;
    color: #1f2937;
}

/* 卡片悬停效果 */
.card-hover {
    transition: all 0.3s ease;
}

.card-hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* 图标颜色 */
.fa-blue {
    color: #3b82f6;
}

.fa-green {
    color: #10b981;
}

.fa-purple {
    color: #8b5cf6;
}

.fa-yellow {
    color: #f59e0b;
}

.fa-red {
    color: #ef4444;
}

.fa-indigo {
    color: #6366f1;
}