* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", sans-serif;
}
body {
    background-color: #f9f7f2;
    color: #333;
}
.container {
    max-width: 100%;
    padding: 0 15px;
}

/* 导航 */
.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #8b4513;
    padding: 12px 15px;
    color: white;
    position: sticky;
    top: 0;
    z-index: 999;
}
.logo h1 {
    font-size: 18px;
}
.nav a {
    color: white;
    text-decoration: none;
    margin-left: 10px;
    font-size: 14px;
}

/* 轮播图：本地 lbt.png */
.banner {
    height: 400px;
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)),
    url('lbt.png');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    padding: 20px;
}

.banner-content h2 {
    font-size: 24px;
    margin-bottom: 10px;
}
.banner-content p {
    font-size: 14px;
    margin-bottom: 20px;
}
.banner-btn {
    background: #ffd700;
    color: #333;
    padding: 12px 25px;
    border-radius: 6px;
    font-size: 16px;
    font-weight: bold;
    text-decoration: none;
    display: inline-block;
}

/* 标题 */
.title {
    text-align: center;
    font-size: 22px;
    color: #8b4513;
    margin: 30px 0 20px;
}
.title::after {
    content: '';
    width: 60px;
    height: 3px;
    background: #8b4513;
    display: block;
    margin: 8px auto;
}

/* 服务：双列布局 */
.service-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 30px;
}
.service-item {
    background: white;
    padding: 20px 15px;
    border-radius: 10px;
    box-shadow: 0 0 8px rgba(0,0,0,0.05);
    text-align: center;
}
.service-item h3 {
    color: #8b4513;
    font-size: 16px;
    margin-bottom: 5px;
}
.service-item p {
    font-size: 13px;
    color: #666;
}

/* 优势：双列布局 */
.advantage {
    background: #fff8e6;
    padding: 20px 0;
}
.adv-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}
.adv-item {
    background: white;
    padding: 15px;
    border-radius: 8px;
    text-align: center;
}
.adv-item h4 {
    font-size: 15px;
    margin-bottom: 5px;
}
.adv-item p {
    font-size: 12px;
    color: #666;
}

/* 关于 */
.about {
    padding: 20px 0;
    text-align: center;
}
.about-content {
    line-height: 1.6;
    font-size: 14px;
    color: #555;
}

/* 底部 */
.footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 20px 0;
    margin-top: 30px;
    font-size: 12px;
}

/* 表单样式 */
.form-container {
    margin: 20px auto;
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 0 10px rgba(0,0,0,0.05);
}
.header {
    text-align: center;
    margin-bottom: 20px;
}
.header h1 {
    color: #8b4513;
    font-size: 22px;
}
.form-group {
    margin-bottom: 15px;
}
.form-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 14px;
}
.required {
    color: red;
}
input, textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
}
.image-preview {
    margin-top: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.image-preview img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 6px;
}
.notice {
    background: #fff8e1;
    padding: 12px;
    border-left: 4px solid #ff9800;
    margin: 15px 0;
    font-size: 13px;
}
.submit-btn {
    width: 100%;
    padding: 12px;
    background: #8b4513;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
}