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

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', -apple-system, sans-serif;
    line-height: 1.6;
    color: #E2E8F0;
    background-color: #0F172A;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

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

.header {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    background: linear-gradient(135deg, #3B82F6, #10B981);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav ul {
    display: flex;
    gap: 30px;
}

.nav ul li a {
    color: #94A3B8;
    font-weight: 500;
    transition: all 0.3s;
    padding: 8px 16px;
    border-radius: 6px;
}

.nav ul li a:hover,
.nav ul li a.active {
    color: #fff;
    background: rgba(59, 130, 246, 0.1);
}

.hero {
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #0F172A 100%);
    padding: 160px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
}

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

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: bold;
    background: linear-gradient(135deg, #fff, #94A3B8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 20px;
    color: #94A3B8;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    background: linear-gradient(135deg, #3B82F6, #2563EB);
    color: white;
    padding: 15px 30px;
    border-radius: 8px;
    font-weight: bold;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
}

.btn-outline {
    background: transparent;
    border: 2px solid #3B82F6;
    margin-left: 15px;
}

.btn-outline:hover {
    background: rgba(59, 130, 246, 0.1);
}

.section {
    padding: 100px 0;
}

.section-dark {
    background: #0F172A;
}

.section-alt {
    background: linear-gradient(180deg, #1E293B 0%, #0F172A 100%);
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 20px;
    color: #fff;
}

.section-subtitle {
    text-align: center;
    color: #94A3B8;
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 30px;
    border-radius: 16px;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: rgba(59, 130, 246, 0.5);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #fff;
}

.feature-card p {
    color: #94A3B8;
    line-height: 1.8;
}

.stats-bar {
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    padding: 40px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

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

.stat-number {
    font-size: 36px;
    font-weight: bold;
    color: #3B82F6;
    margin-bottom: 5px;
}

.stat-label {
    color: #94A3B8;
    font-size: 14px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.service-card {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: rgba(59, 130, 246, 0.5);
}

.service-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.service-content {
    padding: 30px;
}

.service-content h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #fff;
}

.service-content p {
    color: #94A3B8;
    line-height: 1.8;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.pricing-card {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 40px;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s;
    position: relative;
}

.pricing-card.popular {
    border: 2px solid #3B82F6;
    background: rgba(59, 130, 246, 0.1);
}

.pricing-card:hover {
    transform: translateY(-5px);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #3B82F6, #2563EB);
    color: white;
    padding: 5px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: bold;
}

.price {
    font-size: 48px;
    font-weight: bold;
    color: #3B82F6;
    margin: 20px 0;
}

.price span {
    font-size: 16px;
    color: #94A3B8;
}

.pricing-features {
    text-align: left;
    margin: 30px 0;
}

.pricing-features li {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    color: #94A3B8;
}

.pricing-features li::before {
    content: "✓ ";
    color: #10B981;
    font-weight: bold;
    margin-right: 10px;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.case-card {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s;
}

.case-card:hover {
    transform: translateY(-5px);
    border-color: rgba(59, 130, 246, 0.5);
}

.case-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.case-content {
    padding: 30px;
}

.case-content h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #fff;
}

.case-content p {
    color: #94A3B8;
    font-size: 14px;
}

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

.team-card {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    overflow: hidden;
    text-align: center;
    transition: all 0.3s;
}

.team-card:hover {
    transform: translateY(-5px);
}

.team-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.team-content {
    padding: 30px;
}

.team-content h3 {
    font-size: 18px;
    margin-bottom: 5px;
    color: #fff;
}

.team-content p {
    color: #94A3B8;
    font-size: 14px;
}

.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, #3B82F6, #10B981);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -32px;
    top: 5px;
    width: 12px;
    height: 12px;
    background: #3B82F6;
    border-radius: 50%;
}

.timeline-year {
    color: #3B82F6;
    font-weight: bold;
    font-size: 18px;
    margin-bottom: 10px;
}

.timeline-content {
    color: #94A3B8;
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 15px;
    border-radius: 12px;
    overflow: hidden;
}

.faq-question {
    padding: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: bold;
    color: #fff;
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s;
    color: #94A3B8;
    line-height: 1.8;
}

.faq-answer.active {
    max-height: 200px;
    padding: 0 20px 20px;
}

.faq-toggle {
    transition: transform 0.3s;
    color: #3B82F6;
}

.faq-toggle.active {
    transform: rotate(180deg);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
}

.contact-form {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 40px;
    border-radius: 16px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #fff;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 8px;
    font-size: 16px;
    color: #fff;
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.contact-info {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(16, 185, 129, 0.1));
    border: 1px solid rgba(255,255,255,0.1);
    padding: 40px;
    border-radius: 16px;
}

.contact-info h3 {
    font-size: 24px;
    margin-bottom: 30px;
    color: #fff;
}

.info-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 25px;
}

.info-icon {
    font-size: 24px;
    margin-right: 15px;
}

.info-text strong {
    display: block;
    margin-bottom: 5px;
    color: #fff;
}

.info-text {
    color: #94A3B8;
}

.testimonials {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.testimonial-card {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 30px;
    border-radius: 16px;
}

.testimonial-text {
    font-style: italic;
    color: #94A3B8;
    margin-bottom: 20px;
    line-height: 1.8;
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    margin-right: 15px;
    object-fit: cover;
}

.testimonial-info h4 {
    color: #fff;
    margin-bottom: 5px;
}

.testimonial-info p {
    color: #94A3B8;
    font-size: 14px;
}

.footer {
    background: rgba(15, 23, 42, 0.95);
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-about h3 {
    font-size: 24px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #3B82F6, #10B981);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-about p {
    color: #64748B;
    line-height: 1.8;
}

.footer-links h4 {
    font-size: 16px;
    margin-bottom: 20px;
    color: #fff;
}

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links ul li a {
    color: #64748B;
    transition: color 0.3s;
}

.footer-links ul li a:hover {
    color: #3B82F6;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    text-align: center;
    color: #64748B;
}

.certifications {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.cert-item {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 20px 30px;
    border-radius: 12px;
    text-align: center;
}

.cert-item span {
    display: block;
    color: #3B82F6;
    font-weight: bold;
    font-size: 18px;
}

.cert-item small {
    color: #94A3B8;
    font-size: 12px;
}

@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        text-align: center;
    }
    
    .nav ul {
        margin-top: 20px;
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
    }
}