/* 全局基础样式 */
html,
body {
    height: 100%;
    width: 100%;
    margin: 0;
}

* {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-family: "PingFang SC", "Microsoft Yahei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-weight: 400;
    background: #f5f7fa;
    color: #333;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover,
a:focus {
    color: #fff;
}

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

/* 顶部 Header */
.site-header {
    background: #fff;
    border-bottom: 1px solid #e8ecf0;
    padding: 16px 0;
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 16px;
}

.site-logo {
    height: 56px;
    width: auto;
    object-fit: contain;
}

.site-title {
    font-size: 26px;
    font-weight: 600;
    color: #1a3a5c;
    margin: 0;
    letter-spacing: 2px;
}

/* Banner 横幅 */
.banner {
    width: 100%;
    overflow: hidden;
    line-height: 0;
}

.banner img {
    width: 100%;
    height: 380px;
    object-fit: cover;
    display: block;
}

/* 公司简介 */
.intro {
    flex: 1;
    padding: 48px 0 60px;
}

.intro h2 {
    font-size: 22px;
    font-weight: 600;
    color: #1a3a5c;
    margin: 0 0 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid #1a3a5c;
    display: inline-block;
}

.intro p {
    font-size: 15px;
    line-height: 1.8;
    color: #555;
    margin: 0 0 16px;
    text-align: justify;
}

.intro p:last-child {
    margin-bottom: 0;
}

/* 底部 Footer */
.footer {
    background-color: #222;
    padding: 20px 0;
    text-align: center;
    margin-top: auto;
}

.footer a {
    font-size: 14px;
}

/* 响应式：平板及以下 */
@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }

    .site-logo {
        height: 48px;
    }

    .site-title {
        font-size: 22px;
    }

    .banner img {
        height: 220px;
    }

    .intro {
        padding: 32px 0 40px;
    }

    .intro h2 {
        font-size: 20px;
    }

    .intro p {
        font-size: 14px;
    }
}