* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.8;
    color: #333;
    background: #f5f5f5;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
a {
    color: #0066cc;
    text-decoration: none;
}
a:hover {
    color: #ff6600;
}
.header {
    background: linear-gradient(135deg, #1a5f7a 0%, #2d8faf 100%);
    color: white;
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.brand {
    font-size: 24px;
    font-weight: bold;
    color: #fff;
}
.hotline {
    background: #ff6600;
    color: #fff;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: bold;
    font-size: 18px;
}
.hotline:hover {
    background: #ff8533;
    color: #fff;
}
.nav {
    background: #333;
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}
.nav li {
    margin: 0;
}
.nav a {
    display: block;
    color: #fff;
    padding: 15px 20px;
    transition: background 0.3s;
}
.nav a:hover {
    background: #ff6600;
    color: #fff;
}
.banner {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    padding: 80px 0;
}
.banner h1 {
    font-size: 36px;
    margin-bottom: 20px;
}
.banner p {
    font-size: 18px;
    margin-bottom: 10px;
}
.btn {
    display: inline-block;
    background: #ff6600;
    color: white;
    padding: 15px 40px;
    border-radius: 30px;
    font-size: 18px;
    margin-top: 20px;
    transition: all 0.3s;
}
.btn:hover {
    background: #ff8533;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(255,102,0,0.4);
}
.main-content {
    padding: 50px 0;
    background: white;
    min-height: 500px;
}
.section-title {
    border-left: 5px solid #0066cc;
    padding-left: 15px;
    font-size: 24px;
    color: #0066cc;
    margin: 30px 0 20px;
}
.service-card {
    background: #f9f9f9;
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 20px;
}
.service-card h3 {
    color: #333;
    font-size: 20px;
    margin-bottom: 15px;
    border-bottom: 2px solid #0066cc;
    padding-bottom: 10px;
}
.service-card ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 10px;
}
.service-card li {
    padding: 8px 0;
    border-bottom: 1px dashed #ddd;
}
.service-card li:before {
    content: "✓ ";
    color: #ff6600;
    font-weight: bold;
}
.service-card ol {
    list-style: none;
    counter-reset: step;
}
.service-card ol li {
    counter-increment: step;
    padding: 10px 0;
    border-bottom: 1px dashed #ddd;
}
.service-card ol li:before {
    content: counter(step) ". ";
    color: #ff6600;
    font-weight: bold;
    margin-right: 10px;
}
.city-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin: 20px 0;
}
.city-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 10px;
    padding: 25px;
    text-align: center;
    color: white;
    transition: transform 0.3s;
}
.city-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}
.city-card h3 {
    font-size: 24px;
    margin-bottom: 10px;
}
.city-card a {
    color: white;
    font-size: 24px;
    font-weight: bold;
}
.city-card a:hover {
    color: #ff6600;
}
.city-card p {
    font-size: 14px;
    margin-top: 10px;
}
.features {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin: 20px 0;
}
.feature-item {
    text-align: center;
    padding: 25px 15px;
    background: #f9f9f9;
    border-radius: 10px;
}
.feature-item .icon {
    font-size: 40px;
    margin-bottom: 10px;
}
.feature-item h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 5px;
}
.feature-item p {
    font-size: 14px;
    color: #666;
}
.area-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin: 20px 0;
}
.area-card {
    background: #f9f9f9;
    border-radius: 10px;
    padding: 20px;
    border-left: 4px solid #0066cc;
}
.area-card h3 {
    margin-bottom: 10px;
}
.area-card a {
    color: #0066cc;
    font-size: 18px;
    font-weight: bold;
}
.area-card a:hover {
    color: #ff6600;
}
.price-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: white;
}
.price-table th {
    background: #0066cc;
    color: white;
    padding: 12px;
    text-align: left;
}
.price-table td {
    padding: 10px 12px;
    border-bottom: 1px solid #ddd;
}
.price-table tr:nth-child(even) {
    background: #f9f9f9;
}
.footer {
    background: #333;
    color: white;
    padding: 40px 0 20px;
}
.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}
.footer-section h4 {
    color: #ff6600;
    font-size: 18px;
    margin-bottom: 15px;
}
.footer-section p {
    margin: 8px 0;
}
.footer-section a {
    color: #ccc;
}
.footer-section a:hover {
    color: #ff6600;
}
.faq-section {
    background: #fffbeb;
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 20px;
    border-left: 5px solid #fbbf24;
}
.faq-section h3 {
    color: #92400e;
    font-size: 20px;
    margin-bottom: 15px;
}
.faq-item {
    margin-bottom: 20px;
    border-bottom: 1px dashed #fcd34d;
    padding-bottom: 15px;
}
.faq-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}
.faq-question {
    font-weight: bold;
    color: #92400e;
    margin-bottom: 8px;
    cursor: pointer;
}
.faq-answer {
    color: #451a03;
    line-height: 1.8;
}
.tips-section {
    background: #ecfdf5;
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 20px;
    border-left: 5px solid #10b981;
}
.tips-section h3 {
    color: #065f46;
    font-size: 20px;
    margin-bottom: 15px;
}
.tips-list {
    list-style: none;
}
.tips-list li {
    padding: 10px 0;
    border-bottom: 1px dashed #a7f3d0;
    position: relative;
    padding-left: 25px;
}
.tips-list li:before {
    content: "💡";
    position: absolute;
    left: 0;
    font-size: 16px;
}
.warning-section {
    background: #fef2f2;
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 20px;
    border-left: 5px solid #ef4444;
}
.warning-section h3 {
    color: #991b1b;
    font-size: 20px;
    margin-bottom: 15px;
}
.warning-list {
    list-style: none;
}
.warning-list li {
    padding: 8px 0;
    color: #991b1b;
}
.knowledge-card {
    background: #eff6ff;
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 20px;
    border-left: 5px solid #3b82f6;
}
.knowledge-card h3 {
    color: #1e40af;
    font-size: 20px;
    margin-bottom: 15px;
}
.knowledge-card p {
    color: #1e3a8a;
    line-height: 1.8;
    margin-bottom: 10px;
}
.knowledge-card ul {
    list-style: none;
}
.knowledge-card li {
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
}
.knowledge-card li:before {
    content: "🔧";
    position: absolute;
    left: 0;
}
.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #555;
    color: #999;
    font-size: 14px;
}
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 10px;
    }
    .hotline {
        font-size: 16px;
        padding: 8px 16px;
    }
    .banner {
        padding: 50px 0;
    }
    .banner h1 {
        font-size: 24px;
    }
    .section-title {
        font-size: 20px;
    }
    .service-card ul {
        grid-template-columns: 1fr;
    }
    .city-grid {
        grid-template-columns: 1fr;
    }
    .features {
        grid-template-columns: repeat(2, 1fr);
    }
    .nav a {
        padding: 10px 12px;
        font-size: 14px;
    }
}
@media (max-width: 480px) {
    .features {
        grid-template-columns: 1fr;
    }
}