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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    width: 45px;
    height: 45px;
    border-radius: 8px;
    object-fit: cover;
}

.logo span {
    font-size: 20px;
    font-weight: 600;
    color: #1a73e8;
}

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

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

.nav a:hover {
    color: #1a73e8;
}

.header-btns {
    display: flex;
    gap: 15px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, #1a73e8, #0d47a1);
    color: #fff;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(26, 115, 232, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #1a73e8;
    border: 2px solid #1a73e8;
}

.btn-secondary:hover {
    background: #1a73e8;
    color: #fff;
}

.btn-large {
    padding: 15px 35px;
    font-size: 18px;
    border-radius: 30px;
}

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

.btn-outline:hover {
    background: #fff;
    color: #1a73e8;
}

.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, #1a73e8 0%, #0d47a1 100%);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 70px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.hero-content {
    flex: 1;
    padding-right: 50px;
}

.hero-content h1 {
    font-size: 56px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
}

.hero-content p {
    font-size: 24px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 5px;
}

.hero-content .subtitle {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 30px;
}

.hero-btns {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

.download-links, .download-buttons {
    display: flex;
    gap: 15px;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    text-decoration: none;
    color: #fff;
    backdrop-filter: blur(10px);
    transition: all 0.3s;
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.download-btn .icon {
    font-size: 20px;
    font-weight: 600;
}

.download-btn .text {
    font-size: 14px;
    font-weight: 500;
}

.hero-image {
    flex: 1;
    text-align: right;
}

.hero-image img {
    width: 100%;
    max-width: 500px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.wave {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 120'%3E%3Cpath fill='%23ffffff' fill-opacity='1' d='M0,64L48,69.3C96,75,192,85,288,80C384,75,480,53,576,48C672,43,768,53,864,64C960,75,1056,85,1152,80C1248,75,1344,53,1392,42.7L1440,32L1440,120L1392,120C1344,120,1248,120,1152,120C1056,120,960,120,864,120C768,120,672,120,576,120C480,120,384,120,288,120C192,120,96,120,48,120L0,120Z'%3E%3C/path%3E%3C/svg%3E");
    background-size: cover;
}

.services {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
}

.section-header p {
    font-size: 16px;
    color: #666;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.service-item {
    background: #fff;
    padding: 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s;
}

.service-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(26, 115, 232, 0.15);
}

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

.service-item h3 {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
}

.service-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
}

.stats {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 60px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

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

.stat-item .number {
    font-size: 48px;
    font-weight: 700;
    color: #1a73e8;
    margin-bottom: 10px;
}

.stat-item .label {
    font-size: 16px;
    color: #666;
}

.features {
    padding: 80px 0;
}

.features-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.feature-item {
    display: flex;
    gap: 20px;
    padding: 30px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s;
}

.feature-item:hover {
    box-shadow: 0 10px 30px rgba(26, 115, 232, 0.1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon span {
    font-size: 28px;
}

.feature-text h3 {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
}

.feature-text p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
}

.app-showcase {
    padding: 80px 0;
    background: linear-gradient(135deg, #fff 0%, #f8f9fa 100%);
}

.showcase-content {
    display: flex;
    align-items: center;
    gap: 60px;
}

.showcase-text {
    flex: 1;
}

.showcase-text h2 {
    font-size: 36px;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
}

.showcase-text p {
    font-size: 18px;
    color: #666;
    margin-bottom: 30px;
}

.showcase-text ul {
    list-style: none;
    margin-bottom: 40px;
}

.showcase-text li {
    padding: 12px 0;
    font-size: 16px;
    color: #333;
    position: relative;
    padding-left: 25px;
}

.showcase-text li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #1a73e8;
    font-weight: 600;
}

.showcase-images {
    flex: 1;
    display: flex;
    gap: 20px;
}

.showcase-images img {
    width: 48%;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.recruit {
    padding: 80px 0;
    background: linear-gradient(135deg, #1a73e8 0%, #0d47a1 100%);
    text-align: center;
}

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

.recruit-text h2 {
    font-size: 36px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 15px;
}

.recruit-text p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
}

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

.benefit {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.benefit-icon {
    font-size: 40px;
}

.benefit-text {
    font-size: 16px;
    color: #fff;
    font-weight: 500;
}

.recruit .btn-primary {
    background: #fff;
    color: #1a73e8;
}

.recruit .btn-primary:hover {
    background: #f8f9fa;
}

.footer {
    background: #2d3436;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand {
    grid-column: span 1;
}

.footer-brand .logo span {
    color: #fff;
}

.footer-brand p {
    color: #b2bec3;
    margin-top: 15px;
    margin-bottom: 20px;
}

.contact-info p {
    color: #b2bec3;
    margin-bottom: 10px;
    font-size: 14px;
}

.footer-links h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

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

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

.footer-links a {
    color: #b2bec3;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #1a73e8;
}

.footer-qrcode {
    text-align: center;
}

.footer-qrcode h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 15px;
}

.qrcode {
    width: 100px;
    height: 100px;
    background: #fff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    padding: 5px;
}

.qrcode img {
    width: 100%;
    height: 100%;
    border-radius: 8px;
    object-fit: cover;
}

.footer-qrcode p {
    color: #b2bec3;
    font-size: 14px;
}

.footer-bottom {
    border-top: 1px solid #4a5568;
    padding-top: 30px;
}

.copyright {
    text-align: center;
}

.copyright p {
    color: #636e72;
    font-size: 13px;
    margin-bottom: 5px;
}

.copyright a {
    color: #636e72;
    text-decoration: none;
    transition: color 0.3s;
}

.copyright a:hover {
    color: #1a73e8;
    text-decoration: underline;
}

@media (max-width: 768px) {
    .header .container {
        flex-wrap: wrap;
        padding: 10px 20px;
    }
    
    .nav {
        display: none;
    }
    
    .header-btns {
        margin-left: auto;
    }
    
    .btn {
        padding: 8px 15px;
        font-size: 14px;
    }
    
    .hero .container {
        flex-direction: column;
        text-align: center;
        padding: 40px 20px;
    }
    
    .hero-content {
        padding-right: 0;
        margin-bottom: 40px;
    }
    
    .hero-content h1 {
        font-size: 40px;
    }
    
    .hero-content p {
        font-size: 20px;
    }
    
    .hero-btns {
        justify-content: center;
    }
    
    .download-links {
        justify-content: center;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .features-content {
        grid-template-columns: 1fr;
    }
    
    .showcase-content {
        flex-direction: column;
        text-align: center;
    }
    
    .showcase-images {
        flex-direction: column;
    }
    
    .showcase-images img {
        width: 100%;
    }
    
    .recruit-benefits {
        flex-wrap: wrap;
        gap: 20px;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand {
        margin-bottom: 20px;
    }
}