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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa
}

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

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, #1a1f36 0%, #2d3561 100%);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3)
}

.navbar {
    padding: 15px 0
}

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

.logo h1 {
    color: #fff;
    font-size: 24px;
    font-weight: 700
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px
}

.nav-menu a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: color .3s ease;
    padding: 8px 15px;
    border-radius: 5px
}

.nav-menu a:hover {
    color: #00d4aa;
    background-color: rgba(0, 212, 170, 0.1)
}

.hero-section {
    margin-top: 80px;
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    text-align: center
}

.hero-content h2 {
    font-size: 42px;
    margin-bottom: 20px;
    line-height: 1.2
}

.hero-subtitle {
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto 40px;
    opacity: .95
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 60px
}

.btn {
    display: inline-block;
    padding: 15px 40px;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    font-size: 16px;
    transition: all .3s ease
}

.btn-primary {
    background: #00d4aa;
    color: #1a1f36
}

.btn-primary:hover {
    background: #00b894;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 212, 170, 0.4)
}

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px)
}

.hero-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px
}

.feature-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 30px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform .3s ease
}

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

.feature-card .emoji {
    font-size: 48px;
    display: block;
    margin-bottom: 15px
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 12px
}

.feature-card p {
    font-size: 14px;
    opacity: .9
}

section {
    padding: 80px 0
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 15px;
    color: #1a1f36
}

.section-desc {
    text-align: center;
    max-width: 900px;
    margin: 0 auto 50px;
    font-size: 16px;
    color: #666;
    line-height: 1.8
}

.products-section {
    background: #fff
}

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

.product-item {
    background: #f8f9fc;
    padding: 35px;
    border-radius: 12px;
    border-left: 4px solid #00d4aa;
    transition: all .3s ease
}

.product-item:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transform: translateY(-3px)
}

.product-icon {
    font-size: 42px;
    margin-bottom: 15px
}

.product-item h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #1a1f36
}

.product-item > p {
    color: #555;
    margin-bottom: 20px;
    line-height: 1.8
}

.product-features {
    list-style: none
}

.product-features li {
    padding: 8px 0;
    color: #444;
    font-size: 14px
}

.news-section {
    background: linear-gradient(to bottom, #f8f9fc 0%, #fff 100%)
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px
}

.news-item {
    background: #fff;
    padding: 28px;
    border-radius: 10px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    transition: all .3s ease;
    border-top: 3px solid #667eea
}

.news-item:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
    transform: translateY(-3px)
}

.news-date {
    color: #999;
    font-size: 13px;
    margin-bottom: 12px;
    font-family: 'Courier New', monospace
}

.news-item h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: #1a1f36;
    line-height: 1.4
}

.news-item p {
    color: #666;
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 15px
}

.news-tag {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600
}

.advantages-section {
    background: #fff
}

.advantages-list {
    display: grid;
    gap: 30px
}

.advantage-item {
    display: flex;
    gap: 30px;
    align-items: flex-start;
    padding: 30px;
    background: linear-gradient(135deg, #f8f9fc 0%, #fff 100%);
    border-radius: 12px;
    transition: all .3s ease
}

.advantage-item:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08)
}

.advantage-number {
    font-size: 48px;
    font-weight: 700;
    color: #00d4aa;
    opacity: .3;
    min-width: 80px
}

.advantage-content h3 {
    font-size: 22px;
    margin-bottom: 12px;
    color: #1a1f36
}

.advantage-content p {
    color: #555;
    line-height: 1.8
}

.stats-section {
    background: linear-gradient(135deg, #1a1f36 0%, #2d3561 100%);
    color: #fff
}

.stats-section .section-title {
    color: #fff
}

.stats-section .section-desc {
    color: rgba(255, 255, 255, 0.85)
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 30px;
    margin-top: 50px
}

.stat-item {
    text-align: center;
    padding: 30px 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px)
}

.stat-number {
    font-size: 42px;
    font-weight: 700;
    color: #00d4aa;
    margin-bottom: 10px
}

.stat-label {
    font-size: 15px;
    opacity: .9
}

.guide-section {
    background: #f8f9fc
}

.steps-container {
    display: grid;
    gap: 25px;
    margin-top: 40px
}

.step-item {
    display: flex;
    gap: 25px;
    align-items: flex-start;
    background: #fff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all .3s ease
}

.step-item:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transform: translateX(5px)
}

.step-number {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 12px 20px;
    border-radius: 8px;
    font-weight: 700;
    white-space: nowrap;
    font-size: 14px
}

.step-content h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #1a1f36
}

.step-content p {
    color: #555;
    line-height: 1.8
}

.faq-section {
    background: #fff
}

.faq-list {
    display: grid;
    gap: 20px;
    margin-top: 40px
}

.faq-item {
    background: #f8f9fc;
    padding: 30px;
    border-radius: 10px;
    border-left: 4px solid #00d4aa;
    transition: all .3s ease
}

.faq-item:hover {
    background: #f0f2f8;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.06)
}

.faq-item h3 {
    font-size: 19px;
    margin-bottom: 12px;
    color: #1a1f36
}

.faq-item p {
    color: #555;
    line-height: 1.8
}

.contact-section {
    background: linear-gradient(to bottom, #f8f9fc 0%, #fff 100%)
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 40px
}

.contact-item {
    text-align: center;
    padding: 35px 25px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    transition: all .3s ease
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12)
}

.contact-icon {
    font-size: 48px;
    margin-bottom: 15px
}

.contact-item h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: #1a1f36
}

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

.about-section {
    background: #fff
}

.about-content {
    max-width: 900px;
    margin: 0 auto
}

.about-text h3 {
    font-size: 26px;
    margin: 30px 0 15px;
    color: #1a1f36;
    padding-bottom: 10px;
    border-bottom: 2px solid #00d4aa;
    display: inline-block
}

.about-text p {
    color: #555;
    line-height: 1.9;
    margin-bottom: 15px;
    font-size: 15px
}

.footer {
    background: linear-gradient(135deg, #1a1f36 0%, #2d3561 100%);
    color: #fff;
    padding: 60px 0 30px
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 40px;
    margin-bottom: 40px
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #00d4aa
}

.footer-section ul {
    list-style: none
}

.footer-section ul li {
    margin-bottom: 10px
}

.footer-section a {
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    transition: color .3s ease;
    font-size: 14px
}

.footer-section a:hover {
    color: #00d4aa
}

.footer-section p {
    color: rgba(255, 255, 255, 0.75);
    font-size: 14px;
    line-height: 1.8
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 13px
}

@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 15px
    }

    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px
    }

    .hero-content h2 {
        font-size: 28px
    }

    .hero-subtitle {
        font-size: 16px
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center
    }

    .section-title {
        font-size: 28px
    }

    .products-grid,
    .news-grid,
    .contact-grid {
        grid-template-columns: 1fr
    }

    .advantage-item {
        flex-direction: column;
        text-align: center
    }

    .advantage-number {
        font-size: 36px
    }

    .step-item {
        flex-direction: column;
        text-align: center
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr)
    }
}