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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.5;
    color: #333;
    background: #f5f5f5;
}

.container {
    max-width: 750px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 头部样式 - 手机版 */
.header {
    background: #0a2b3e;
    color: white;
    padding: 20px 0;
    text-align: center;
    max-width: 750px;
    margin: 0 auto;
}

.logo-top {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.logo-img {
    height: 140px;
    width: auto;
    max-width: 280px;
    object-fit: contain;
}

.logo-text {
    font-size: 22px;
    color: white;
    display: block;
}

.logo-subtitle {
    font-size: 18px;
    color: #8fc9e8;
    display: block;
}

.logo-slogan {
    font-size: 13px;
    color: #8fc9e8;
}

.contact-phone {
    font-size: 15px;
    margin-top: 5px;
}

/* 导航栏 */
.nav {
    background: #1a4a6e;
    padding: 10px 0;
    text-align: center;
    max-width: 750px;
    margin: 0 auto;
}

.nav a {
    color: white;
    text-decoration: none;
    margin: 0 12px;
    font-size: 14px;
    display: inline-block;
}

/* 动态内容板块 - 手机卡片 */
.content-block {
    background: white;
    border-radius: 12px;
    padding: 18px;
    margin: 15px 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.content-block h2 {
    color: #0a2b3e;
    margin-bottom: 12px;
    font-size: 18px;
    padding-left: 10px;
    border-left: 3px solid #1a4a6e;
}

.block-content {
    color: #555;
    line-height: 1.5;
    margin-bottom: 12px;
    font-size: 14px;
}

/* 按钮样式 */
.btn, .btn-primary {
    display: inline-block;
    padding: 8px 18px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 13px;
    background: #1a4a6e;
    color: white;
    text-align: center;
}

/* 底部联系信息 */
.contact-info {
    text-align: center;
    background: #e8f0f7;
    padding: 18px;
    border-radius: 12px;
    margin: 25px 0;
    max-width: 750px;
    margin: 25px auto;
}

.contact-info p {
    margin: 6px 0;
    color: #0a2b3e;
    font-size: 13px;
}

.contact-info p:first-child {
    font-size: 15px;
    font-weight: bold;
}

/* 页脚 */
.footer {
    background: #0a2b3e;
    color: white;
    text-align: center;
    padding: 12px 0;
    font-size: 11px;
    max-width: 750px;
    margin: 0 auto;
}