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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    color: #2c3e50;
    line-height: 1.6;
    background: #ffffff;
}

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

/* 导航栏 */
.navbar {
    background: #ffffff;
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    border-bottom: 1px solid #e8eef5;
}

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

.logo {
    font-size: 26px;
    font-weight: 700;
    color: #2563eb;
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 35px;
}

.nav-menu a {
    color: #475569;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Hero区域 */
.hero {
    background: 
        linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(219, 234, 254, 0.8) 100%),
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(37, 99, 235, 0.03) 2px, rgba(37, 99, 235, 0.03) 4px),
        repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(37, 99, 235, 0.03) 2px, rgba(37, 99, 235, 0.03) 4px),
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(37, 99, 235, 0.1) 0%, transparent 50%),
        linear-gradient(to bottom, #f0f9ff 0%, #e0f2fe 100%);
    padding: 100px 0;
    border-bottom: 1px solid #e8eef5;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 15% 20%, rgba(37, 99, 235, 0.08) 0%, transparent 25%),
        radial-gradient(circle at 85% 80%, rgba(59, 130, 246, 0.08) 0%, transparent 25%),
        radial-gradient(circle at 50% 50%, rgba(37, 99, 235, 0.05) 0%, transparent 40%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.06) 0%, transparent 70%);
    pointer-events: none;
}

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

.hero h1 {
    font-size: 52px;
    margin-bottom: 20px;
    font-weight: 700;
    color: #1e293b;
}

.hero-subtitle {
    font-size: 20px;
    color: #64748b;
    margin-bottom: 50px;
    font-weight: 400;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 80px;
    margin-top: 60px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: #2563eb;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 16px;
    color: #64748b;
    font-weight: 500;
}

/* 通用section样式 */
section {
    padding: 90px 0;
}

.section-title {
    text-align: center;
    font-size: 40px;
    margin-bottom: 60px;
    color: #1e293b;
    font-weight: 700;
}

/* 关于我们 */
.about {
    background: #ffffff;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    font-size: 18px;
    line-height: 1.9;
    color: #475569;
}

.about-content p {
    margin-bottom: 20px;
}

/* 服务优势 */
.services {
    background: #f8fafc;
    border-top: 1px solid #e8eef5;
    border-bottom: 1px solid #e8eef5;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.service-card {
    background: #ffffff;
    padding: 45px 35px;
    border-radius: 12px;
    text-align: center;
    border: 1px solid #e8eef5;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(37, 99, 235, 0.12);
    border-color: #2563eb;
}

.service-icon {
    font-size: 52px;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #1e293b;
    font-weight: 600;
}

.service-card p {
    color: #64748b;
    font-size: 15px;
    line-height: 1.7;
}

/* 资源中心 */
.resources {
    background: #ffffff;
}

.resources-layout {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.resource-panel {
    background: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #e8eef5;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.panel-header {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: #fff;
    padding: 24px 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-header h3 {
    font-size: 20px;
    font-weight: 600;
}

.badge {
    background: rgba(255, 255, 255, 0.25);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    backdrop-filter: blur(10px);
}

.demand-badge {
    background: rgba(239, 68, 68, 0.9);
}

.scroll-container {
    height: 400px;
    overflow: hidden;
    background: #ffffff;
}

.scroll-content {
    animation: scroll 25s linear infinite;
}

.scroll-content:hover {
    animation-play-state: paused;
}

@keyframes scroll {
    0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(-50%);
    }
}

/* 资源项 */
.resource-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 22px 28px;
    border-bottom: 1px solid #f1f5f9;
    transition: background 0.3s;
}

.resource-item:hover {
    background: #f8fafc;
}

.resource-info h4 {
    font-size: 18px;
    color: #1e293b;
    margin-bottom: 6px;
    font-weight: 600;
}

.resource-spec {
    font-size: 13px;
    color: #64748b;
}

.resource-count {
    font-size: 26px;
    font-weight: 700;
    color: #2563eb;
}

/* 需求项 */
.demand-item {
    padding: 22px 28px;
    border-bottom: 1px solid #f1f5f9;
    transition: background 0.3s;
}

.demand-item:hover {
    background: #f8fafc;
}

.demand-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.demand-header h4 {
    font-size: 17px;
    color: #1e293b;
    font-weight: 600;
}

.demand-tag {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    background: #ef4444;
    color: #fff;
    font-weight: 500;
}

.demand-tag.normal {
    background: #94a3b8;
}

.demand-requirement {
    font-size: 15px;
    color: #334155;
    margin-bottom: 6px;
    font-weight: 500;
}

.demand-client {
    font-size: 13px;
    color: #64748b;
}

/* 联系我们 */
.contact {
    background: #f8fafc;
    border-top: 1px solid #e8eef5;
}

.contact-content {
    max-width: 700px;
    margin: 0 auto;
}

.contact-info {
    background: #ffffff;
    padding: 45px;
    border-radius: 12px;
    border: 1px solid #e8eef5;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.contact-item {
    padding: 18px 0;
    border-bottom: 1px solid #f1f5f9;
    font-size: 16px;
}

.contact-item:last-child {
    border-bottom: none;
}

.contact-item strong {
    color: #1e293b;
    margin-right: 10px;
    font-weight: 600;
}

/* 页脚 */
footer {
    background: #ffffff;
    color: #64748b;
    padding: 35px 0;
    text-align: center;
    border-top: 1px solid #e8eef5;
}

/* 响应式 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 30px;
    }
    
    .resources-layout {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
}