html {
    font-size: 16px;
}

body {
    font-family: Georgia, Arial, sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    color: white;
    padding-top: 3em;
}

header {
    background-color: #272935;
    position: fixed;
    width: 100%;
    z-index: 1000;
    top: 0;
    font-family: Arial, sans-serif;
}

header::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -0.5rem;
    width: 100%;
    height: 0.5rem; 
    background: linear-gradient(#373945, #272935); 
    z-index: -1; 
}

.navbar {
    padding: 0 1rem;
}

.sub-1 {
    /* height: 70px; */
    height: 4.3rem;
    padding: 0 4.5rem;
    margin-left: 7.5rem;
    margin-right: 7.5rem;
    display: flex;
    box-sizing: border-box;
    align-items: center;
}

.navbar-left {
    display: flex;
    align-items: center;
    margin-right : auto;
}

.navbar .brand a {
    cursor: pointer;
    color: #fff;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
    transition: color 0.3s ease-in-out;
}

.navbar .brand a:hover {
    color: #bbdefb; 
  }

.nav-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

.nav-item {
    margin-left: 2rem;
}

.nav-item span {
    cursor: pointer;
    color: #fff;
    text-decoration: none;
    font-size: 1rem;
    font-weight: bold;
}

/* .navbar-right {
    align-items: center;
} */

.nav-actions {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

.nav-action {
    margin-left: 1rem;
}

.nav-action a {
    text-decoration: none;
    font-size: 1rem;
    color: #fff;
}

.sub-2 {
    height: 4.3rem;
    padding: 0 1rem;
    /* margin-left: 11rem;
    margin-right: 11rem; */
    display: none;
    box-sizing: border-box;
    align-items: center;
    justify-content: space-between;
}

.sub-2-mid {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.sub-2-left {
    cursor: pointer;
}

/* .sub-2-left {
    margin-right: auto;
}

.sub-2-right {
    margin-left: auto;
} */

.dropdown-menu {
    display: block;
    position: absolute;
    /* top: 60px; */
    top: 4rem;
    left: 0;
    background-color: #272935;
    width: 100%;
    z-index: 1000;
    /* padding: 0 2rem; */
    /* padding-left: 2rem; */
    height: 0;
    overflow: hidden;
    transition: height 0.3s ease; /* 过渡效果，0.5秒内平滑改变高度 */
}

.dropdown-menu span {
    cursor: pointer;
    color: #fff;
    text-decoration: none;
    font-size: 1rem;
    font-weight: bold;
    margin-left: 2rem;
}

.container-1 {
    /* padding: 9em 16em 5em 16em; */
    padding: 7em 0em 5em 0em;
    /* box-sizing: border-box; */
    background-color: #272935;
}

.container-1 .body-1 {
    display: flex;
    margin: 0 9.5rem 0 12.5rem;
    padding: 0 5rem 0 5rem;
}

.container-1 .section-title {
    /* font-size: 50px; */
    font-size: 3rem;
    font-family: "Montserrat", sans-serif;
    /* font-weight: 10rem; */
}

.container-1 .section-content {
    margin-top: 1rem;
    margin-left: 0.2rem;
}

.profile {
    margin-right : 5em;
    text-align: center;
}

.profile img {
    border-radius: 50%;
    width: 17em;
    height: 17em;
    margin-bottom: 1em;
}

.profile p {
    font-family: "Montserrat", sans-serif;
}

.profile .name {
    margin: 0;
    font-size: 2em;
    font-weight: 550;
}

.profile .school {
    /* margin: 10px 0; */
    margin: 0.5rem 0;
    font-size: 1rem;
    color: #9c9da2;
    white-space: nowrap;
}

.profile .university {
    margin: 0.5rem 0;
    font-size: 1.1rem;
    color: #bbdefb;
    cursor: pointer;
}

.profile .university:hover {
    text-decoration: underline;
  }

.icons {
    margin-top: 0.7rem;
}

.profile .icons a {
    font-size: 2.5rem;
    margin: 0 0.25rem;
    text-decoration: none;
    /* color: #fff; */
    color: #bbdefb;
}

.profile .icons i {
    transition: transform 0.15s ease;
}

.profile .icons i:hover {
    transform: scale(1.1);
}

.container-1 .section-content .bio-text {
    font-size: 1.2rem;
    line-height: 1.5;
    margin-bottom: 1.2rem;
}

.inter-and-edu {
    display: flex;
    padding-right: 6rem;
}

.inter-and-edu .interests {
    /* margin-right: 10rem; */
    margin-right: auto;
}

.inter-and-edu .interests-text {
    margin-bottom: 0.6rem;
}

.inter-and-edu .interests .ul-interests,  .education .ul-edu {
    margin-left: 1.2rem;
}

.education .edu-text {
    margin-bottom: 0.6rem;
}

.container-1 .ul-edu .school {
    margin-left: 2rem;
    font-size: 0.9rem;
    color: #9c9da2;
}

.container-2 {
    /* padding: 5em 14em; */
    padding: 5em 0 5em 0;
    background-color: #23252f;
}

.container-2 .body-2 {
    display: flex;
    margin: 0 10.5rem 0 10.5rem;
    padding: 0 5rem 0 5rem;
    /* align-items: center; */
}

.container-2 .section-title {
    font-size: 3rem;
    font-family: "Montserrat", sans-serif;
    font-weight: 350;
    margin-right: 5em;
    text-align: center;
}

.container-3 {
    /* padding: 5em 14em; */
    padding: 5em 0 5em 0;
    /* padding-right: 8em; */
    background-color: #272935;
}

.container-3 .body-3 {
    display: flex;
    margin: 0 9rem 0 10.5rem;
    padding: 0 5rem 0 5rem;
}

.container-3 .section-title {
    font-size: 3rem;
    font-family: "Montserrat", sans-serif;
    font-weight: 350;
    margin-right: 1em;
}

/* .container-3 .section-title .scholar {
    font-size: 23px;
    font-family: Arial, sans-serif;
    margin-top: 10px;
    line-height: 1.5;
} */

.container-3 .section-content .filter {
    display: flex;
    margin-bottom: 0.5rem;
    
}

.container-3 .section-content .filter-btn {
    margin-right: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: #1565c0;
    border: 1px solid #1565c0;
    border-radius: 0.25rem;
    color: black;
    font-size: 1.1rem;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.3s;
}

.container-3 .section-content .filter-btn:hover {
    background-color: #217ee7;
    transform: scale(1.05);
}

.container-3 .section-content .filter-btn.active {
    background-color: #104d92;
    border-color: #104d92;
}


.container-3 .section-content .publication {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    padding-right: 0;
    margin-bottom: 1rem;
}

.container-3 .section-content .publication .publication-content {
    max-width: 58%;
}

.container-3 .section-content .publication img {
    max-width: 40%;
    height: auto;
    /* border-radius: 10px; */
    /* box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1); */
    background-color: white;
    align-self: center; /* 确保图片在父元素中垂直居中 */
    
}

.container-3 .section-content .links a {
    margin-right: 1rem;
    color: #4e9bff;
    text-decoration: none;
}

.container-3 .section-content .links a:hover {
    text-decoration: underline;
}

.container-4 {
    /* gap: 3em; */
    /* padding: 5em 14em; */
    padding: 5em 0 5em 0;
    background-color: #23252f;
}

.container-4 .body-4 {
    display: flex;
    margin: 0 10.5rem 0 10.5rem;
    padding: 0 5rem 0 5rem;
}

.container-4 .section-title {
    font-size: 3rem;
    font-family: "Montserrat", sans-serif;
    font-weight: 350;
    margin-right: 5rem;
}

.container-4 .section-content .exp {
    display: flex;   
}

.container-4 .right {
    background-color: #343a40;
    padding: 1.8rem;
    padding-bottom: 2.5rem;
    box-shadow: 0 0.2rem 0.4rem rgba(0,0,0,0.1);
    border-radius: 0.3rem;
}

.container-4 .right .up {
    display: flex;   
    align-items: flex-start;
}

.container-4 .right .up img{
    max-width: 7%;
    height: auto;
    margin-right: 0.6rem;
}

.container-4 .right .position {
    font-size: 1.3rem;
    margin: 0.5rem;
    margin-top: 0;
}

.container-4 .right .danwei {
    margin: 0.5rem;
}

.container-4 .right .danwei a {
    color: #bbdefb; 
    text-decoration: none;
}

.container-4 .right .time {
    margin: 0.5rem;
}

.container-5 {
    /* display: flex; */
    /* gap: 3em; */
    /* padding: 5em 14em; */
    padding: 5em 0 5em 0;
    background-color: #272935;
}

.container-5 .body-5 {
    display: flex;
    margin: 0 10.5rem 0 10.5rem;
    padding: 0 5rem 0 5rem;
}

.container-5 .section-title {
    font-size: 3rem;
    font-family: "Montserrat", sans-serif;
    font-weight: 350;
    margin-right: 10rem;
}

.container-5 .contact-item {
    display: flex;
    align-items: center;
    font-size: 1.6em;
    margin-top: 0.3em;
}

.container-5 i {
    margin-top: 0.18em;
    font-size: 1.5em;
    margin-right: 0.5em;
}

.container-5 a {
    text-decoration: none;
}

/* @media (max-width: 500px) {
    html {
        font-size: 8px;
    }
}

@media (max-width: 900px) {
    html {
        font-size: 12px;
    }
} */

/* @media (min-width: 1301px) and (max-width: 1500px) {
    html {
        font-size: 14px;
    }
}

@media (min-width: 1101px) and (max-width: 1300px) {
    html {
        font-size: 12px;
    }
} */

@media (min-width: 901px) and (max-width: 1300px) {
    html {
        font-size: 14px;
    }
}

@media (min-width: 501px) and (max-width: 900px) {
    html {
        font-size: 12px;
    }
}

@media (min-width: 250px) and (max-width: 501px) {
    html {
        font-size: 8px;
    }
}


@media (max-width: 900px) {
    .sub-2 {
        display: flex;
    }

    .sub-1 {
        display: none;
    }

    .container-1 .body-1 {
        display: block;
        padding: 0 4em 0 4em;
        margin-left: 0;
        margin-right: 0;
    }

    .container-1 .profile {
        margin-right : 0;
        margin-bottom: 2.5em;
    }

    .container-1 .interests {
        margin-right: auto;
    }

    .container-1 .inter-and-edu {
        padding-right: 2rem;
    }

    .container-2 .body-2{
        display: block;
        margin-left: 0;
        margin-right: 0;
    }

    .container-2 .section-title {
        margin-right: 0;
    }

    .container-3 .body-3{
        display: block;
        padding: 0 4em 0 4em;
        margin-left: 0;
        margin-right: 0;
    }
    .container-3 .section-title {
        margin-right: 0;
        text-align: center;
        margin-bottom: 0.5em;
    }
    .container-3 .section-content .bbb {
        display: flex;
        justify-content: center; 
    }

    .container-3 .section-content .publication {
        display: grid;
        place-items: center;
        /* text-align: center; */
    }

    .container-3 .section-content .publication .publication-content {
        max-width: 100%;
        margin-bottom: 1em;
    }

    .container-3 .section-content .publication img {
        max-width: 100%;
    }

    .container-4 .body-4{
        display: grid;
        place-items: center;
        /* margin: 0 4em 0 4em; */
        padding: 0 5.5em 0 5.5em;
        margin-left: 0;
        margin-right: 0;
    }

    .container-4 .section-title {
        margin-right: 0;
        text-align: center;
        margin-bottom: 0.5em;
    }

    .container-5 .body-5 {
        display: grid;
        place-items: center;
        /* margin: 0 4em 0 4em; */
        /* padding: 0 1.5em 0 1.5em; */
        margin-left: 0;
        margin-right: 0;

    }

    .container-5 .section-title {
        margin-right: 0;
        text-align: center;
        /* margin-bottom: 0.5em; */
    }
}