:root {
    --navy: #102c3b;
    --ink: #172e3a;
    --teal: #126658;
    --mint: #93e0d1;
    --muted: #526672;
    --line: #dce4e8;
    --wash: #f3f7f8;
    --white: #fff;
    font-family: Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: var(--ink);
    background: var(--white);
    font-synthesis: none
}

* {
    box-sizing: border-box
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 110px
}

body {
    margin: 0;
    font-size: 16px;
    line-height: 1.7
}

a {
    color: inherit;
    text-underline-offset: 5px
}

button {
    font: inherit
}

a,
button {
    -webkit-tap-highlight-color: transparent
}

a:focus-visible,
button:focus-visible {
    outline: 3px solid #dc8b26;
    outline-offset: 5px
}

.skip {
    position: fixed;
    left: 20px;
    top: -100px;
    z-index: 20;
    padding: 10px 20px;
    background: white
}

.skip:focus {
    top: 10px
}

.header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(255, 255, 255, .97);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 20px max(5vw, 24px);
    border-bottom: 1px solid var(--line)
}

.brand {
    display: flex;
    align-items: center;
    gap: 13px;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: .12em;
    text-decoration: none;
    white-space: nowrap
}

.monogram {
    width: 37px;
    height: 37px;
    display: grid;
    place-items: center;
    color: var(--mint);
    background: var(--navy);
    font: 27px Georgia, serif
}

.brand-cn {
    margin-left: 8px;
    font-weight: 400;
    letter-spacing: .12em
}

.header nav {
    display: flex;
    gap: 23px
}

.header nav a {
    font-size: 14px;
    text-decoration: none;
    color: #465962
}

.header nav a:hover,
.header nav a.active {
    color: var(--teal);
    text-decoration: underline
}

.language {
    cursor: pointer;
    background: transparent;
    border: 1px solid #b4c4cc;
    padding: 5px 13px;
    font-size: 14px;
    border-radius: 3px;
    white-space: nowrap
}

.language:hover {
    background: var(--wash)
}

.hero {
    color: #fff;
    background: var(--navy);
    padding: 55px max(5vw, 24px) 0
}

.hero-inner {
    max-width: 1160px;
    margin: auto;
    display: grid;
    grid-template-columns: 500px 300px 250px;
    gap: 35px;
    align-items: center;
}

.eyebrow {
    font-size: 12px;
    letter-spacing: .16em;
    font-weight: 600
}

.hero .eyebrow {
    color: #b9cfd9;
    margin: 0 0 22px
}

h1 {
    font-family: Georgia, 'Songti SC', serif;
    font-size: 64px;
    line-height: 1.15;
    font-weight: 400;
    margin: 0 0 12px;
    letter-spacing: -.04em
}

h1 span {
    font-family: 'Songti SC', serif;
    font-size: 31px;
    letter-spacing: .15em;
    margin-left: 24px;
    color: #c4d5dd;
    white-space: nowrap
}

.role {
    font-size: 17px;
    color: #c4d5dd;
    margin: 0 0 34px
}

.hero h2 {
    font-family: Georgia, 'Songti SC', serif;
    font-size: 46px;
    font-weight: 400;
    line-height: 1.17;
    letter-spacing: -.025em;
    margin: 0 0 24px;
    color: var(--mint)
}

.hero-description {
    max-width: 590px;
    color: #d0dce2;
    line-height: 1.8;
    margin: 0
}

.hero-actions {
    display: flex;
    gap: 28px;
    align-items: center;
    margin: 30px 0 45px
}

.button {
    background: var(--mint);
    color: var(--navy);
    padding: 12px 20px;
    text-decoration: none;
    font-size: 14px;
    font-weight: bold;
    display: inline-flex;
    gap: 25px;
    align-items: center;
    border-radius: 2px
}

.button:hover {
    background: #b1eee2
}

.text-link {
    font-size: 14px
}

.research-index {
    border-left: 1px solid #56707b;
    padding-left: 20px
}

.research-index>div {
    border-top: 1px solid #49616f;
    display: flex;
    gap: 20px;
    padding: 16px 0 22px
}

.index-number {
    font-size: 12px;
    color: #a8c0cb;
    padding-top: 7px
}

.research-index>div p {
    font: 30px/1.25 Georgia, 'Songti SC', serif;
    margin: 0
}

.research-index footer {
    font-size: 14px;
    line-height: 1.9;
    color: #b9cfd9;
    border-top: 1px solid #49616f;
    padding-top: 20px
}

.hero-bottom {
    max-width: 1160px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    padding: 17px 0;
    border-top: 1px solid #425d6a;
    font-size: 12px;
    letter-spacing: .1em;
    color: #b9cfd9
}

.hero-bottom a {
    text-decoration: none
}

.section {
    max-width: 1160px;
    margin: auto;
    display: grid;
    grid-template-columns: 235px minmax(0, 1fr);
    gap: 45px;
    padding: 66px 0;
    border-bottom: 1px solid var(--line);
    scroll-margin-top: 20px
}

.section-label>span {
    font-size: 12px;
    color: var(--teal);
    letter-spacing: .08em
}

.section-label h2 {
    font: 30px/1.3 Georgia, 'Songti SC', serif;
    margin: 10px 0
}

.section-content>p {
    color: var(--muted);
    margin: 0 0 18px
}

.section-content .lead {
    font: 29px/1.4 Georgia, 'Songti SC', serif;
    color: var(--ink);
    margin: 0 0 23px
}

.inline-link {
    font-size: 14px;
    color: var(--teal);
    font-weight: 600
}

.research-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px
}

.research-card {
    padding: 26px;
    border: 1px solid var(--line);
    border-radius: 3px
}

.research-card.primary {
    background: var(--wash);
    border-top: 3px solid var(--teal)
}

.tag {
    font-size: 12px;
    letter-spacing: .09em;
    color: var(--teal);
    font-weight: 600
}

h3 {
    font-size: 21px;
    line-height: 1.4;
    font-weight: 500;
    margin: 14px 0 12px
}

.research-card p {
    font-size: 15px;
    color: var(--muted);
    margin: 0 0 14px
}

.research-card .research-note {
    font-size: 13px;
    line-height: 1.6;
    padding-top: 14px;
    border-top: 1px solid var(--line);
    margin-bottom: 0
}

.featured-project {
    padding: 30px;
    background: var(--wash);
    border-left: 3px solid var(--teal)
}

.project-meta {
    font-size: 12px;
    letter-spacing: .07em;
    display: flex;
    justify-content: space-between;
    gap: 18px;
    color: var(--teal);
    flex-wrap: wrap
}

.featured-project h3 {
    font: 28px/1.35 Georgia, 'Songti SC', serif;
    margin: 22px 0 12px
}

.featured-project p {
    color: var(--muted);
    font-size: 15px
}

.original-title {
    font-size: 14px !important
}

.project-facts {
    display: grid;
    grid-template-columns: 1.2fr 1fr .8fr;
    gap: 20px;
    margin: 26px 0 20px;
    padding: 22px 0 0;
    border-top: 1px solid var(--line)
}

dt {
    font-size: 12px;
    color: var(--muted)
}

dd {
    margin: 6px 0 0;
    font-size: 15px;
    font-weight: 600;
    overflow-wrap: anywhere
}

.small {
    font-size: 13px !important;
    color: var(--muted);
    line-height: 1.6
}

.application {
    padding-top: 36px
}

.application h3 {
    margin-top: 10px
}

.application p {
    color: var(--muted)
}

.line-list {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 22px
}

.line-list span,
.paper-topic {
    font-size: 12px;
    background: var(--wash);
    padding: 5px 10px;
    border: 1px solid var(--line);
    border-radius: 2px;
    color: #3d5e69
}

.section-intro {
    font-size: 15px
}

.publication {
    display: grid;
    grid-template-columns: 60px 1fr;
    gap: 20px;
    padding: 28px 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line)
}

.publication-year {
    font-size: 14px;
    color: var(--muted)
}

.journal {
    font-size: 12px;
    letter-spacing: .1em;
    color: var(--teal);
    margin: 0
}

.publication h3 {
    font-size: 22px;
    margin: 8px 0 12px
}

.publication h3 a {
    text-decoration: none
}

.publication h3 a:hover {
    text-decoration: underline
}

.authors {
    font-size: 14px;
    margin: 0 0 6px;
    color: var(--muted)
}

.paper-topic {
    display: inline-block;
    margin-top: 12px
}

.editorial-note {
    font-size: 13px;
    color: var(--muted);
    margin-top: 22px !important
}

.award {
    display: grid;
    grid-template-columns: 130px 1fr;
    gap: 24px;
    padding: 24px 0;
    border-top: 1px solid var(--line)
}

.award-rank {
    font-size: 12px;
    letter-spacing: .04em;
    color: var(--teal);
    padding-top: 4px
}

.award h3 {
    font-size: 19px;
    margin: 0 0 8px
}

.award p {
    font-size: 14px;
    color: var(--muted);
    margin: 0 0 8px
}

.experience-row {
    display: grid;
    grid-template-columns: 130px 1fr;
    gap: 24px;
    border-top: 1px solid var(--line);
    padding: 26px 0
}

.experience-row .tag {
    padding-top: 4px
}

.experience-row h3 {
    margin: 0 0 4px
}

.experience-row p {
    margin: 0 0 10px;
    color: var(--muted)
}

.contact {
    background: var(--navy);
    color: white;
    margin-top: 65px;
    padding: 60px max(8vw, 24px);
    display: flex;
    gap: 70px;
    justify-content: space-between
}

.contact .eyebrow {
    color: var(--mint)
}

.contact h2 {
    font: 38px/1.3 Georgia, 'Songti SC', serif;
    margin: 20px 0 24px
}

.email {
    font-size: 23px;
    color: var(--mint);
    overflow-wrap: anywhere
}

.contact-source {
    font-size: 12px;
    color: #afc4cd;
    max-width: 450px;
    margin-top: 20px
}

.contact-affiliation {
    align-self: center;
    min-width: 240px
}

.contact-affiliation h3 {
    font-size: 19px
}

.contact-affiliation p,
.contact-affiliation a {
    font-size: 14px;
    color: #c4d5dd
}

.footer {
    padding: 22px max(5vw, 24px);
    display: flex;
    justify-content: space-between;
    gap: 20px;
    font-size: 12px;
    color: var(--muted)
}

html[lang=zh-CN] h1 {
    letter-spacing: 0
}

html[lang=zh-CN] .hero h2 {
    line-height: 1.5;
    font-size: 42px
}

html[lang=zh-CN] .hero-description {
    line-height: 1.9
}

html[lang=zh-CN] .tag {
    letter-spacing: .04em
}

@media(min-width:1440px) {
    .hero {
        padding-top: 75px
    }

    .hero-actions {
        margin-bottom: 60px
    }
}

@media(max-width:1279px) {
    .section {
        margin: 0 6vw;
        grid-template-columns: 190px minmax(0, 1fr);
        gap: 30px
    }

    .header {
        gap: 18px;
        padding: 18px 4vw
    }

    .header nav {
        gap: 15px
    }

    .brand-cn {
        display: none
    }

    .hero-inner {
        gap: 25px;
        grid-template-columns: 430px 230px 150px
    }

    .hero h2 {
        font-size: 42px
    }
}

@media(max-width:980px) {
    .header {
        flex-wrap: wrap;
        padding: 12px 5vw;
        gap: 10px
    }

    .header nav {
        order: 3;
        width: 100%;
        justify-content: space-between;
        gap: 14px;
        overflow-x: auto;
        padding: 6px 0
    }

    .header nav a {
        white-space: nowrap
    }

    .hero {
        padding-top: 42px
    }

    .hero-inner {
        grid-template-columns: 1fr 190px;
        gap: 40px
    }

    h1 {
        font-size: 50px
    }

    h1 span {
        font-size: 25px;
        margin-left: 18px
    }

    .hero h2 {
        font-size: 37px
    }

    .research-index {
        padding-left: 20px
    }

    .research-index>div {
        gap: 12px
    }

    .research-index>div p {
        font-size: 24px
    }

    .section {
        grid-template-columns: 145px minmax(0, 1fr);
        gap: 24px;
        padding: 48px 0
    }

    .section-label h2 {
        font-size: 26px
    }

    .research-card {
        padding: 20px
    }

    .project-facts {
        grid-template-columns: 1fr 1fr
    }

    .award,
    .experience-row {
        grid-template-columns: 100px 1fr;
        gap: 15px
    }

    .contact {
        gap: 40px
    }

    .contact h2 {
        font-size: 30px
    }

    .footer>span:nth-child(2) {
        display: none
    }
}

@media(max-width:680px) {
    html {
        scroll-padding-top: 130px
    }

    .hero {
        padding-left: 6vw;
        padding-right: 6vw
    }

    .hero-inner {
        display: block
    }

    .hero .eyebrow {
        font-size: 11px;
        letter-spacing: .1em
    }

    h1 {
        font-size: 48px
    }

    .hero h2,
    html[lang=zh-CN] .hero h2 {
        font-size: 36px
    }

    .hero-description {
        font-size: 16px
    }

    .hero-actions {
        gap: 22px;
        margin-bottom: 35px
    }

    .research-index {
        display: none
    }

    .hero-bottom {
        font-size: 11px
    }

    .section {
        display: block;
        margin: 0 6vw;
        padding: 38px 0
    }

    .section-label {
        margin-bottom: 24px
    }

    .section-label>span {
        display: inline-block;
        margin-right: 10px
    }

    .section-label h2 {
        display: inline;
        font-size: 27px
    }

    .section-label h2 br {
        display: none
    }

    .section-content .lead {
        font-size: 25px
    }

    .research-grid {
        grid-template-columns: 1fr;
        gap: 14px
    }

    .research-card {
        padding: 24px
    }

    .research-card p {
        font-size: 16px
    }

    .featured-project {
        padding: 23px
    }

    .featured-project h3 {
        font-size: 25px
    }

    .project-facts {
        gap: 18px
    }

    .project-meta {
        font-size: 11px
    }

    .publication {
        grid-template-columns: 1fr;
        gap: 8px
    }

    .publication h3 {
        font-size: 20px
    }

    .award,
    .experience-row {
        grid-template-columns: 1fr;
        gap: 8px
    }

    .contact {
        display: block;
        margin-top: 40px;
        padding: 38px 6vw
    }

    .contact-affiliation {
        margin-top: 35px
    }

    .contact h2 {
        font-size: 32px
    }

    .footer {
        flex-wrap: wrap;
        padding: 18px 6vw;
        font-size: 12px
    }

    .header nav a {
        font-size: 13px
    }

    .brand {
        font-size: 13px
    }

    .hero-actions .button {
        gap: 12px
    }
}

@media(prefers-reduced-motion:reduce) {
    html {
        scroll-behavior: auto
    }
}

@media print {

    .header,
    .hero-actions,
    .hero-bottom,
    .language,
    .footer,
    .skip {
        display: none
    }

    .hero,
    .contact {
        background: white !important;
        color: var(--ink);
        padding: 20px 0
    }

    .hero *,
    .contact * {
        color: var(--ink) !important
    }

    .research-index {
        display: none
    }

    .hero-inner {
        display: block
    }

    .hero h2 {
        font-size: 30px
    }

    .section {
        margin: 0;
        padding: 25px 0;
        grid-template-columns: 150px 1fr;
        break-inside: avoid
    }

    .contact {
        margin-top: 20px
    }

    .research-card,
    .featured-project {
        background: white
    }

    .editorial-note {
        display: block
    }
}

/* Three research directions and selected publication list. */
.hero h2 {
    font-size: clamp(1.9rem, 3vw, 2.65rem);
    line-height: 1.22
}

.research-index>div p {
    font-size: 24px
}

.research-grid {
    grid-template-columns: 1fr
}

.research-card.primary {
    padding: 25px 28px
}

.research-card h3 {
    font-size: 23px
}

.research-card p {
    font-size: 16px
}

.publication+.publication {
    border-top: 0
}

.journal {
    line-height: 1.55
}

.publication-year {
    font-variant-numeric: tabular-nums;
    color: var(--teal)
}

html[lang=zh-CN] .hero h2 {
    font-size: clamp(1.75rem, 3vw, 2.6rem)
}

@media(max-width:680px) {
    .hero h2 {
        font-size: 30px
    }

    .research-card.primary {
        padding: 23px
    }

    .footer {
        line-height: 1.7
    }
}

.application-image {
    margin-top: 35px;
    border-top: 1px solid var(--line);
    padding-top: 25px;
}

.application-image img {
    width: 100%;
    max-height: 420px;
    object-fit: contain;
    display: block;
}

.profile-box {
    display: flex;
    justify-content: center;
    align-items: center;
}


.profile-photo {
    width: 160px;
    height: 210px;
    object-fit: cover;
    border-radius: 3px;
    border: 1px solid rgba(255, 255, 255, .25);
    box-shadow: 0 0 0 8px rgba(255, 255, 255, .05);
}

@media(max-width:980px) {

    .hero-inner {
        grid-template-columns: 1fr;
    }


    .profile-box {
        justify-content: flex-start;
    }


    .profile-photo {
        width: 120px;
        height: 140px;
    }

}