* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f5f6fa;
}
a {
    text-decoration: none;
    color: #333;
}

.header {
    background: #fff;
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}
.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}
.logo {
    font-size: 18px;
    font-weight: bold;
    color: #0066ff;
}
.nav {
    display: flex;
    gap: 30px;
}
.nav a {
    color: #666;
    transition: color 0.3s;
}
.nav a:hover {
    color: #0066ff;
}

.hero {
    background: linear-gradient(135deg, #0066ff 0%, #0088ff 100%);
    padding: 60px 20px;
}
.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
}
.hero-content {
    flex: 1;
    color: #fff;
}
.hero-title {
    font-size: 36px;
    font-weight: bold;
    line-height: 1.4;
    margin-bottom: 20px;
}
.title-blue {
    color: #fff;
}
.title-yellow {
    color: #ffd700;
}
.hero-desc {
    font-size: 16px;
    opacity: 0.9;
    margin-bottom: 30px;
}
.hero-btns {
    display: flex;
    gap: 15px;
}
.btn {
    padding: 12px 30px;
    border-radius: 4px;
    font-weight: 500;
    display: inline-block;
    transition: transform 0.3s;
}
.btn:hover {
    transform: scale(1.05);
}
.btn-white {
    background: #fff;
    color: #0066ff;
}
.btn-yellow {
    background: #ffd700;
    color: #333;
}
.hero-image {
    flex: 1;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}
.hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

.stats {
    background: #fff;
    padding: 60px 20px;
}
.stats-container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}
.stats-title {
    font-size: 24px;
    font-weight: bold;
    color: #333;
    margin-bottom: 15px;
}
.stats-subtitle {
    color: #666;
    margin-bottom: 40px;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}
.stat-item {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
}
.stat-number {
    font-size: 36px;
    font-weight: bold;
    color: #0066ff;
    margin-bottom: 10px;
}
.stat-label {
    color: #666;
    font-size: 14px;
}

.features {
    background: #f5f6fa;
    padding: 60px 20px;
}
.features-container {
    max-width: 1200px;
    margin: 0 auto;
}
.features-title {
    text-align: center;
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 40px;
    color: #333;
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 20px;
}
.feature-card {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    display: flex;
    gap: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}
.feature-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}
.feature-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: #e8f0fe;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}
.feature-info {
    flex: 1;
}
.feature-info .feature-title {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 8px;
    text-align: left;
    color: #333;
}
.feature-info .feature-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.faq {
    background: #fff;
    padding: 60px 20px;
}
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}
.faq-title {
    text-align: center;
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 40px;
    color: #333;
}
.faq-list {
    border-radius: 8px;
    overflow: hidden;
}
.faq-item {
    border-bottom: 1px solid #eee;
}
.faq-item:last-child {
    border-bottom: none;
}
.faq-question {
    width: 100%;
    padding: 20px;
    background: #fff;
    border: none;
    text-align: left;
    font-size: 15px;
    font-weight: 500;
    color: #333;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s;
}
.faq-question:hover {
    background: #f8f9fa;
}
.faq-question::after {
    content: '▼';
    font-size: 12px;
    color: #999;
    transition: transform 0.3s;
}
.faq-question.active::after {
    transform: rotate(180deg);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}
.faq-answer.active {
    max-height: 200px;
}
.faq-answer p {
    padding: 0 20px 20px;
    color: #666;
    font-size: 14px;
    line-height: 1.8;
}

.footer {
    background: #333;
    color: #999;
    text-align: center;
    padding: 30px 20px;
    font-size: 14px;
}
.footer p {
    margin-bottom: 8px;
}
.footer p:last-child {
    margin-bottom: 0;
}

@media (max-width: 768px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
    }
    .hero-title {
        font-size: 28px;
    }
    .hero-btns {
        justify-content: center;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}