* {
    padding: 0;
    color: #1a1e21;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 1rem;
    line-height: 1.7;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    margin: 0;
    padding: 0;
    list-style: none;
    background-color: #f4f6ff;
    letter-spacing: 0.01em;
    position: relative;
    min-height: 100vh;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(34, 104, 247, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(34, 104, 247, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

body::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse 600px 400px at 15% 20%, rgba(34, 104, 247, 0.08), transparent),
        radial-gradient(ellipse 500px 350px at 85% 70%, rgba(74, 144, 226, 0.06), transparent);
    pointer-events: none;
    z-index: 0;
}
/* 
body > * {
    position: relative;
    z-index: 1;
} */

a {
    text-decoration: none;
    color: #333;
}

a:hover {
    text-decoration: none;
    color: #2268F7;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: -0.01em;
    margin: 0;
}

h1 {
    font-size: 2.25rem;
}

h2 {
    font-size: 1.875rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

h5 {
    font-size: 1.125rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin: 0 0 1rem 0;
    line-height: 1.8;
}

header {
    width: 100%;
    background-color: #ffffff;
    overflow: hidden;
}

.nav-container {
    background-color: #fff;
    width: 100%;
    height: 68px;
    position: fixed;
    z-index: 1000;
    box-shadow: 0 1px #ddd;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    box-sizing: border-box;
}

.nav-container .logo {
    display: flex;
    align-items: center;
}

.nav-container .logo a {
    display: block;
    padding-top: 8px;
    padding-bottom: 0;
}

.logo-head_img {
    height: 40px;
}

.nav-container .nav-link {
    display: flex;
}

.nav-container .nav-link ul {
    display: flex;
    align-items: center;
    padding-right: 24px;
}

.nav-container .nav-link ul li {
    list-style: none;
    padding: 0 24px;
}

.nav-container .nav-link .nav-search-box {
    width: 210px;
    display: flex;
    align-content: center;
    align-items: center;
    box-sizing: border-box;
}

.nav-container .nav-link .nav-search-box input {
    width: 100%;
    height: 40px;
    appearance: none;
    background-color: #f1f1f1;
    border-radius: 20px;
    border: #E60013;
    color: #555;
    cursor: text;
    display: inline-block;
    font-size: 0.9375rem;
    font-weight: 400;
    padding: 0 .5rem 0 1.5rem;
    box-sizing: border-box;
}

.nav-search_form {
    position: relative;
}

.nav-container .nav-link .nav-search-box input:focus {
    background-color: #fff;
    box-shadow: 0 0 0 2px rgba(34, 104, 247, 0.2);
    outline: none;
}

.nav-container .nav-link .nav-search-box input::placeholder {
    color: #999;
    font-weight: 300;
}

.nav-container .nav-link .nav-search-box .btn-search {
    position: absolute;
    right: 0;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 25px;
}

.nav-container .nav-link .nav-search-box .search-icon {
    position: absolute;
    right: 8px;
    transform: translateY(-50%);
    pointer-events: none;
}

.header_height {
    width: 100%;
    height: 68px;
}

footer {
    background-color: #f9f9f9;
    box-shadow: 0 -1px #FBFBFB;
    margin-top: 48px;
    padding-top: 36px;
}

.footer-container {
    width: 1448px;
    margin: 0 auto;
}

.footer_intro {
    color: #888;
    text-align: center;
    padding: 0 24px;
    padding-bottom: 24px;
}

.footer_intro p {
    font-size: 14px;
    /*line-height: 1.8;*/
    margin: 0 auto;
    color: #666;
}

.footer_nav {
    padding-top: 0px;
    width: 100%;
    overflow: hidden;
}

.footer_nav-ul {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    list-style: none;
    padding: 0;
}

.footer_nav-item {
    padding: 0px 24px;
    line-height: 26px;
    position: relative;
}

.footer_nav-item::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 14px;
    background-color: #ddd;
}

.footer_nav-item:first-child::before {
    display: none;
}

.footer_nav-item a {
    font-size: 14px;
    color: #333;
}

.footer_nav-item a:hover {
    color: #2268F7;
}

.footer-copyright {
    background-color: #F0F2F7;
    padding: 12px 0px;
    overflow: hidden;
    box-sizing: border-box;
}

.footer-copyright .copyright {
    display: flex;
    justify-content: center;
    align-content: center;
}

.footer-copyright .copyright p {
    padding-left: 15px;
    padding-right: 15px;
    margin: 0;
    font-size: 12px;
    color: #888;
}

.footer-copyright .copyright a {
    color: #888;
    transition: color 0.2s ease;
}

.footer-copyright .copyright a:hover {
    color: #2268F7;
}

@media (max-width: 1447px) {
    .footer-container {
        width: 100%;
        padding: 0 24px;
        box-sizing: border-box;
    }
}

@media (max-width: 992px) {
    .nav-container .nav-link ul {
        display: none;
    }

    .nav-container .nav-link .nav-search-box {
        width: 260px;
    }

    .footer_nav-item {
        padding: 0 16px;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 16px;
        height: 56px;
    }

    .logo-head_img {
        height: 32px;
    }

    .nav-container .nav-link .nav-search-box {
        width: 200px;
    }

    .nav-container .nav-link .nav-search-box input {
        height: 36px;
        font-size: 14px;
        padding: 0 0.5rem 0 1.2rem;
    }

    .nav-container .nav-link .nav-search-box .btn-search {
        width: 36px;
        height: 36px;
    }

    .nav-container .nav-link .nav-search-box .search-icon {
        height: 20px;
        right: 8px;
        top: 50%;
    }

    .header_height {
        height: 56px;
    }

    .footer_nav-item {
        padding: 0 12px;
        font-size: 14px;
    }

    .footer_intro {
        padding: 0;
    }

    .footer_intro p {
        /*font-size: 14px;*/
        color: #666;
    }

    .copyright {
        flex-wrap: wrap;
    }

    .copyright p {
        font-size: 12px;
        padding: 4px 8px;
    }

    footer {
        margin-top: 24px;
        padding-top: 24px;
    }
}

@media (max-width: 576px) {
    .nav-container {
        padding: 0 12px;
        height: 52px;
    }

    .logo-head_img {
        height: 28px;
    }

    .nav-container .nav-link .nav-search-box {
        width: 160px;
    }

    .nav-container .nav-link .nav-search-box input {
        height: 32px;
        font-size: 12px;
        padding: 0 0.5rem 0 1rem;
        border-radius: 16px;
    }

    .nav-container .nav-link .nav-search-box input::placeholder {
        font-size: 12px;
    }

    .nav-container .nav-link .nav-search-box .btn-search {
        width: 32px;
        height: 32px;
        border-radius: 16px;
    }

    .nav-container .nav-link .nav-search-box .search-icon {
        height: 18px;
        right: 7px;
        top: 50%;
    }

    .header_height {
        height: 52px;
    }

    .footer_intro {
        padding: 0;
    }

    .footer_intro p {
        line-height: 1.6;
    }

    .footer-copyright .footer-copyright {
        padding: 16px 12px;
    }

    .footer-copyright .copyright p {
        padding: 2px 12px;
    }
}