* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
}

ul, li {
    list-style: none;
}

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

img {
    max-width: 100%;
    display: block;
}

.header-wrap {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.4s ease;
    background: linear-gradient(180deg, var(--bs-primary) 30%, transparent);
}

.header-wrap.scrolled {
    background: var(--bs-primary-light);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

.header-top {
    background: transparent;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.4s ease;
}

.header-wrap.scrolled .header-top {
    /*background:#9e95f0;*/
    border-bottom: 1px solid #f0f0f0;
}

.top-bar {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 15px;
    gap: 20px;
}


.logo-box {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
}

.logo-box img {
    height: 80px;
}

.search-box {
     display: flex;
     align-items: center;
     gap: 0;
     flex: 1;
     max-width: 360px;
     min-width: 200px;
     position: relative;
 }

.search-box input {
    width: 100%;
    height: 38px;
    padding: 0 44px 0 16px;
    border: 1.5px solid #d0d7e2;
    border-right: none;
    border-radius: 20px 0 0 20px;
    outline: none;
    font-size: 14px;
    transition: border-color 0.3s;
    background: #f8f9fb;
}

.search-box input:focus {
    border-color: var(--bs-primary);
    background: #fff;
}

.search-box button {
    height: 38px;
    width: 48px;
    padding: 0 14px;
    background: linear-gradient(135deg, var(--bs-primary-light), var(--bs-primary));
    color: #fff;
    border: none;
    border-radius: 0 20px 20px 0;
    cursor: pointer;
    font-size: 15px;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-box button:hover {
    background: linear-gradient(135deg, var(--bs-primary), var(--bs-primary-dark));
}

.header-nav {
    background: transparent;
    transition: all 0.4s ease;
}

.nav-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
    position: relative;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 14px 0;
    gap: 5px;
    width: fit-content;
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1100;
    /*background: rgba(0, 102, 204, 0.8);*/
    border-radius: 8px;
    padding: 12px 10px;
    transition: all 0.3s;
}


.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.menu-toggle span {
    width: 26px;
    height: 3px;
    background: #fff;
    border-radius: 2px;
    transition: all 0.3s;
}

.mobile-nav-mask {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.35s ease;
    backdrop-filter: blur(2px);
}

.mobile-nav-mask.active {
    opacity: 1;
    visibility: visible;
}

body.nav-open {
    overflow: hidden;
}

.main-nav {
    display: flex;
    align-items: stretch;
}

.header-nav .search-box {
    display: none;
}

.main-nav > ul {
    display: flex;
    width: 100%;
}

.main-nav > ul > li {
    flex: 1;
    position: relative;
}

.main-nav > ul > li > a {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    color: #fff;
    font-size: 19px;
    padding: 16px 10px;
    transition: all 0.3s;
    white-space: nowrap;
    font-weight: 600;
    position: relative;
}

.main-nav > ul > li > a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: #ffd700;
    transition: width 0.3s;
    border-radius: 2px 2px 0 0;
}

.main-nav > ul > li:hover > a::after,
.main-nav > ul > li.active > a::after {
    width: 60%;
}

.main-nav > ul > li:hover > a,
.main-nav > ul > li.active > a {
    background: rgba(255, 255, 255, 0.1);
}

.nav-arrow {
    font-size: 10px;
    transition: transform 0.3s;
    margin-top: 1px;
}

.main-nav > ul > li:hover > a .nav-arrow {
    transform: rotate(180deg);
}

.submenu {
    position: absolute;
    min-width: 161px;
    text-align: center;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    padding: 10px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 999;
    border-top: 2px solid var(--bs-primary);
}

.main-nav > ul > li:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.submenu li a {
    display: block;
    padding: 10px 22px;
    font-size: 17px;
    color: #444;
    transition: all 0.2s;
    /*border-left:3px solid transparent;*/
}

.submenu li a:hover {
    color: var(--bs-primary);
    background: #f0f6ff;
    /*border-left-color:#0066cc;*/
    /*padding-left:26px;*/
}

/*-----------------------pc端导航栏样式分割线--------------------------*/

@media (max-width: 992px) {
    .header-nav .search-box {
        max-width: 100%;
    }

    .main-nav > ul > li > a {
        font-size: 14px;
        padding: 14px 6px;
    }
}

@media (max-width: 768px) {
    .top-bar {
        flex-wrap: wrap;
        padding: 12px 15px;
    }

    .logo-box img {
        height: 42px;
    }

    .top-bar .search-box {
        order: 3;
        width: 100%;
        max-width: 100%;
        min-width: 100%;
    }

    .menu-toggle {
        display: flex;
        top: 14px;
        right: 14px;
        padding: 10px 8px;
        z-index: 1051;
    }

    .menu-toggle span {
        width: 22px;
        height: 2px;
    }

    .top-bar .search-box {
        display: none !important;
    }

    .header-nav {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: 82%;
        max-width: 340px;
        background: var(--bs-primary);
        z-index: 1050;
        transform: translateX(100%);
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        box-shadow: -4px 0 24px rgba(0, 0, 0, 0.25);
    }

    body.nav-open .header-nav {
        transform: translateX(0);
    }

    .nav-wrap {
        padding: 70px 14px 30px !important;
        max-width: 100% !important;
    }

    .main-nav {
        display: flex;
        flex-direction: column;
        align-items: stretch;
    }

    .header-nav .search-box {
        display: flex !important;
        margin-top: 16px;
        width: 100%;
        max-width: 100%;
        min-width: 100%;
        order: 999;
    }

    .main-nav > ul {
        display: flex;
        flex-direction: column;
        gap: 0;
        background: rgba(255, 255, 255, 0.06);
        border-radius: 12px;
        padding: 8px;
        border: 1px solid rgba(255, 255, 255, 0.12);
    }

    .main-nav > ul > li {
        flex: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .main-nav > ul > li:last-child {
        border-bottom: none;
    }

    .main-nav > ul > li > a {
        display: flex;
        align-items: center;
        justify-content: space-between;
        color: #fff;
        font-size: 15px;
        font-weight: 500;
        padding: 13px 14px;
        border-radius: 8px;
        transition: all 0.3s;
        border-left: 3px solid transparent;
        white-space: normal;
        gap: 8px;
    }

    .main-nav > ul > li > a::after {
        display: none;
    }

    .main-nav > ul > li:hover > a,
    .main-nav > ul > li.active > a {
        background: rgba(255, 255, 255, 0.1);
        /*border-left-color: #ffd700;*/
    }

    .main-nav > ul > li > a .nav-arrow {
        font-size: 10px;
        transition: transform 0.35s ease;
        opacity: 0.9;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 20px;
        height: 20px;
        background: rgba(255, 255, 255, 0.12);
        border-radius: 50%;
        margin-top: 0;
        flex-shrink: 0;
    }

    .main-nav > ul > li.open > a .nav-arrow {
        transform: rotate(180deg);
        background: rgba(255, 215, 0, 0.3);
    }

    .submenu {
        position: static;
        /*background: rgba(255,255,255,0.97);*/
        background: none;
        border-radius: 8px;
        box-shadow: none;
        padding: 0;
        opacity: 1;
        visibility: visible;
        transform: none;
        transition: none;
        z-index: auto;
        border-top: none;
        /*border-left: 3px solid #ffd700;*/
        max-height: 0;
        overflow: hidden;
        /*margin: 2px 6px 8px;*/
        transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .main-nav > ul > li:hover .submenu {
        opacity: 1;
        visibility: visible;
        transform: none;
    }

    .main-nav > ul > li.open .submenu {
        max-height: 1400px;
        padding: 8px 0;
    }

    .submenu li a {
        padding: 8px 14px 8px 20px;
        font-size: 13px;
        color: #fff;
        transition: all 0.25s ease;
        border-left: 3px solid transparent;
        margin: 0 4px;
        border-radius: 6px;
        text-align: left;
    }

    .submenu li a:hover {
        color: var(--bs-primary);
        background: #eef4ff;
        /*border-left-color: #0066cc;*/
        /*padding-left: 24px;*/
    }
}

@media (max-width: 480px) {

    .logo-box img {
        height: 38px;
    }

    .menu-toggle {
        top: 10px;
        right: 10px;
        padding: 9px 7px;
    }

    .menu-toggle span {
        width: 20px;
    }

    .nav-wrap {
        padding: 62px 10px 24px !important;
    }

    .main-nav > ul {
        padding: 5px;
        border-radius: 10px;
    }

    .main-nav > ul > li > a {
        padding: 12px;
        font-size: 14px;
    }

    .submenu {
        /*margin: 2px 4px 6px;*/
        border-radius: 7px;
    }

    .main-nav > ul > li.open .submenu {
        padding: 6px 0;
    }

    .submenu li a {
        padding: 7px 12px 7px 16px;
        font-size: 13px;
        margin: 0 3px;
    }

    .submenu li a:hover {
        padding-left: 20px;
    }

    .main-nav > ul > li > a .nav-arrow {
        width: 18px;
        height: 18px;
    }

    .header-nav .search-box {
        margin-bottom: 12px;
    }
}