/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", system-ui, sans-serif;
}
html {
    scroll-behavior: smooth;
}
body {
    color: #333;
    background: #fff;
    line-height: 1.7;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
a {
    text-decoration: none;
    color: inherit;
}
ul {
    list-style: none;
}

/* 导航栏 */
.header {
    background: #0f3460;
    color: white;
    position: sticky;
    top: 0;
    z-index: 99;
}
.nav-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}
.logo h2 {
    font-size: 24px;
    letter-spacing: 2px;
}
.logo span {
    font-size: 13px;
    opacity: 0.85;
}
.nav a {
    margin-left: 30px;
    font-size: 15px;
    transition: opacity 0.2s;
}
.nav a:hover {
    opacity: 0.7;
}

/* 首屏横幅 */
.banner {
    height: 420px;
    background: linear-gradient(rgba(15, 52, 96, 0.8), rgba(15, 52, 96, 0.8)), url("");
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
}
.banner-text h1 {
    font-size: 38px;
    margin-bottom: 12px;
}
.banner-text p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.9;
}
.btn {
    display: inline-block;
    padding: 12px 32px;
    background: #e6b349;
    color: #0f3460;
    font-weight: bold;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.25s;
}
.btn:hover {
    background: #d4a038;
}

/* 通用区块 */
.section {
    padding: 70px 0;
}
.bg-gray {
    background: #f7f9fc;
}
.bg-dark {
    background: #0f3460;
    color: white;
}
.section-title {
    text-align: center;
    font-size: 28px;
    margin-bottom: 45px;
    color: #0f3460;
    position: relative;
}
.white {
    color: #fff;
}
.section-title::after {
    content: "";
    width: 70px;
    height: 3px;
    background: #e6b349;
    display: block;
    margin: 10px auto 0;
}

/* 公司简介 */
.about-text {
    max-width: 900px;
    margin: 0 auto;
    font-size: 16px;
    color: #444;
}
.about-text p {
    margin-bottom: 16px;
}

/* 业务板块网格 */
.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
}
.service-card {
    background: white;
    padding: 32px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.06);
    border-radius: 8px;
}
.service-card h3 {
    color: #0f3460;
    margin-bottom: 18px;
    font-size: 20px;
}
.service-card li {
    margin: 10px 0;
    padding-left: 16px;
    position: relative;
}
.service-card li::before {
    content: "•";
    color: #e6b349;
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* 优势板块 */
.adv-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}
.adv-item h4 {
    color: #0f3460;
    font-size: 18px;
    margin-bottom: 10px;
}

/* 联系我们 */
.contact-wrap {
    text-align: center;
}
.contact-info p {
    margin: 12px 0;
    font-size: 17px;
}
#tel {
    font-size: 22px;
    color: #e6b349;
    font-weight: bold;
}

/* 页脚 */
.footer {
    background: #08203e;
    color: #bbb;
    padding: 30px 0;
    text-align: center;
    font-size: 14px;
}
.footer p {
    margin: 6px 0;
}