/* 通用样式 */
body {
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f3fcfa;
    color: #1a2a2a;
}
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    background: linear-gradient(90deg, #1cb5e0 0%, #000851 100%);
    color: #fff;
    padding: 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.logo {
    font-size: 2rem;
    font-weight: bold;
    letter-spacing: 2px;
    color: #fff;
}
.nav-list {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}
.nav-list li {
    margin-left: 32px;
}
.nav-list a {
    color: #fff;
    text-decoration: none;
    font-size: 1.1rem;
    padding: 8px 0;
    border-bottom: 2px solid transparent;
    transition: border 0.2s;
}
.nav-list a.active, .nav-list a:hover {
    border-bottom: 2px solid #1cb5e0;
}

/* 横幅 Banner */
/* Banner 背景图和内容居中 */
.banner {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 340px;
    color: #fff;
    padding: 60px 0 40px 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    box-sizing: border-box;
    overflow: hidden;
}
.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 114, 255, 0.32);
    z-index: 1;
}
.banner-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    padding: 0 30px;
}
.banner-content h1 {
    font-size: 2.6rem;
    margin-bottom: 18px;
    font-weight: 700;
    letter-spacing: 1px;
    text-shadow: 0 2px 12px rgba(0,0,0,0.18);
}
.banner-content p {
    font-size: 1.2rem;
    margin-bottom: 28px;
    color: #e0f7f4;
    text-shadow: 0 2px 8px rgba(0,0,0,0.12);
}
.btn-primary {
    background: linear-gradient(90deg, #00c6a7 0%, #0072ff 100%);
    color: #fff;
    padding: 12px 32px;
    border: none;
    border-radius: 24px;
    font-size: 1.1rem;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 12px rgba(0,198,167,0.12);
}
.btn-primary:hover {
    background: linear-gradient(90deg, #0072ff 0%, #00c6a7 100%);
    box-shadow: 0 4px 16px rgba(0,114,255,0.12);
}

/* 首页功能区 */
.features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: stretch;
    margin: 60px auto 40px auto;
    gap: 32px;
}
.feature {
    flex: 0 1 320px;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 2px 16px rgba(0,198,167,0.08);
    padding: 32px 24px;
    margin: 0 8px;
    min-width: 240px;
    max-width: 360px;
    text-align: left;
    border-left: 6px solid #00c6a7;
    box-sizing: border-box;
}
.feature h2 {
    color: #00c6a7;
    font-size: 1.3rem;
    margin-bottom: 12px;
}
/* 健康功能区 */
.health-section {
    background: #e6f9f5;
    border-radius: 14px;
    box-shadow: 0 2px 16px rgba(0,198,167,0.06);
    padding: 36px 28px;
    margin: 40px 0;
    text-align: left;
}
.health-section h2 {
    color: #0072ff;
    margin-top: 0;
    font-size: 1.4rem;
}
.health-list {
    list-style: disc inside;
    margin: 18px 0 0 0;
    padding: 0 0 0 18px;
    color: #00bfae;
    font-size: 1.08rem;
    line-height: 2.1;
}

/* 关于我们页面 */
.about-banner {
    background: linear-gradient(90deg, #1cb5e0 0%, #000851 100%);
    color: #fff;
    padding: 60px 0 40px 0;
    text-align: center;
}
.about-banner h1 {
    font-size: 2.5rem;
    font-weight: 700;
}
.about-content {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 12px rgba(28,181,224,0.08);
    padding: 40px 32px;
    margin: 40px auto;
    text-align: left;
}
.about-content h2 {
    color: #1cb5e0;
    margin-top: 0;
}
.about-values {
    list-style: disc inside;
    margin: 16px 0 0 0;
    padding: 0 0 0 18px;
    color: #009e8e;
}

/* 页脚 */
.footer {
    background: #000851;
    color: #fff;
    text-align: center;
    padding: 24px 0;
    font-size: 1rem;
    margin-top: 40px;
}

/* 响应式布局 */
@media (max-width: 900px) {
    .banner {
        flex-direction: column;
        text-align: center;
    }
    .banner-content, .banner-image {
        padding: 0 10px;
        text-align: center;
    }
    .features {
        flex-direction: column;
        gap: 20px;
    }
    .health-section {
        padding: 24px 8px;
    }
}
@media (max-width: 600px) {
    .nav-container {
        flex-direction: column;
        height: auto;
        padding: 10px 0;
    }
    .logo {
        margin-bottom: 10px;
    }
    .features {
        margin: 30px 0 20px 0;
    }
    .about-content {
        padding: 20px 10px;
    }
    .banner-image img {
        max-width: 100%;
    }
    .health-section {
        padding: 16px 2px;
    }
}