:root {
    --career-font-body: "Source Sans 3", sans-serif;
    --career-font-display: "Source Serif 4", serif;
    --career-ink: #18212b;
    --career-muted: #5d6874;
    --career-accent: #315b7d;
    --career-accent-dark: #24445f;
    --career-line: #dce2e7;
    --career-surface: #fbfcfd;
    --career-page: #f4f6f7;
    --career-space-sm: 8px;
    --career-space-md: 12px;
    --career-space-lg: 16px;
    --career-space-xl: 24px;
    --career-space-2xl: 32px;
    --career-space-3xl: 48px;
    --career-space-4xl: 64px;
}

html {
    background: var(--career-page);
}

body {
    padding-top: 68px;
    background: var(--career-page);
    color: var(--career-ink);
    font-family: var(--career-font-body);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.65;
    font-kerning: normal;
    font-optical-sizing: auto;
}

button,
input,
select,
textarea {
    font-family: var(--career-font-body);
}

h1,
h2,
h3,
h4,
h5,
h6,
.font-alt {
    font-family: var(--career-font-display) !important;
}

#particles-js {
    display: none;
}

[data-aos],
[data-aos].aos-animate {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
}

a {
    color: var(--career-accent);
}

a:hover {
    color: var(--career-accent-dark);
}

/* Navigation */
.header,
.header.scrolled {
    min-height: 68px;
    padding: 8px 0;
    border-bottom: 1px solid var(--career-line);
    background: rgba(251, 252, 253, 0.97);
    box-shadow: none;
    backdrop-filter: blur(12px);
}

.header .navbar-brand {
    color: var(--career-ink) !important;
    font-family: var(--career-font-display) !important;
    font-size: 1.2rem;
    font-weight: 700;
}

.header .nav-link {
    padding-block: 10px;
    color: var(--career-muted) !important;
    font-size: 0.94rem;
    font-weight: 600;
    transform: none;
}

.header .nav-link .bi {
    display: none;
}

.header .nav-link:hover,
.header .nav-link.active {
    color: var(--career-accent-dark) !important;
    transform: none;
}

.header .nav-link::after,
.header .nav-link:not(.active):hover::after,
.header .nav-link.active::after {
    bottom: 2px;
    height: 2px;
    margin-inline: 12px;
    border-radius: 0;
    background: var(--career-accent);
}

.header .navbar-nav:has(.nav-link:hover) .nav-link.active:not(:hover)::after {
    opacity: 0;
}

.navbar-toggler {
    border: 1px solid var(--career-line);
    border-radius: 4px;
    color: var(--career-ink);
    font-size: 0.78rem;
    letter-spacing: 0.06em;
}

/* Intro */
.top-section {
    height: auto;
    min-height: 330px;
    padding: clamp(56px, 8vw, 96px) 0;
    overflow: visible;
    border-bottom: 1px solid var(--career-line);
    background: var(--career-surface);
}

.top-section::before {
    display: none;
}

.top-section .top-section-content {
    width: 100%;
}

.top-section .row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 190px;
    gap: clamp(40px, 7vw, 96px);
    align-items: center;
}

.top-section .col-lg-8,
.top-section .col-lg-4 {
    width: auto;
    padding: 0;
}

.top-section h2,
.top-section h2.text-white {
    max-width: 760px;
    margin: 0;
    color: var(--career-ink) !important;
    font-family: var(--career-font-display) !important;
    font-size: clamp(2.7rem, 6vw, 4.8rem);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.035em;
    text-shadow: none;
}

.hero-role {
    max-width: 680px;
    margin: var(--career-space-lg) 0 0;
    color: var(--career-accent-dark);
    font-size: clamp(1.15rem, 2vw, 1.4rem);
    font-weight: 600;
    line-height: 1.35;
}

.hero-name-cn {
    margin: var(--career-space-md) 0 0;
    color: var(--career-muted);
    font-family: "Songti SC", "Noto Serif CJK SC", "STSong", serif;
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: 0.14em;
}

.hero-focus {
    max-width: 680px;
    margin: var(--career-space-md) 0 0;
    color: var(--career-muted);
    font-size: 1rem;
    line-height: 1.5;
}

#avatar {
    display: grid;
    justify-items: center;
    gap: var(--career-space-md);
    text-align: center;
}

#avatar img {
    width: 128px;
    height: 128px;
    border: 1px solid var(--career-line);
    border-radius: 50%;
    box-shadow: none;
    transition: none;
}

#avatar img:hover {
    transform: none;
    box-shadow: none;
}

.social-links {
    gap: var(--career-space-sm);
    margin-top: 0 !important;
}

.social-link {
    width: 34px;
    min-width: 34px;
    height: 34px;
    min-height: 34px;
    border: 1px solid var(--career-line);
    border-radius: 50%;
    background: transparent;
    box-shadow: none;
    color: var(--career-accent);
    font-size: 15px;
    transition: color 160ms ease-out, border-color 160ms ease-out;
}

.social-link:hover {
    border-color: var(--career-accent);
    background: transparent;
    box-shadow: none;
    color: var(--career-accent-dark);
    transform: none;
}

.location {
    margin-top: 0 !important;
    color: var(--career-muted);
    font-size: 0.86rem;
    font-weight: 500;
    text-shadow: none;
}

.location i,
.location-text {
    color: inherit;
}

/* Document sections */
section,
section:hover {
    transform: none;
    box-shadow: none;
}

section.bg-gradient-primary-to-secondary-light,
section.bg-gradient-primary-to-secondary-gray,
section.bg-gradient-primary-to-secondary-dark {
    margin: 0;
    padding: clamp(52px, 7vw, 80px) 0;
    overflow: visible;
    border: 0;
    border-bottom: 1px solid var(--career-line);
    border-radius: 0;
    background: var(--career-surface) !important;
    box-shadow: none;
    color: var(--career-ink);
}

section.bg-gradient-primary-to-secondary-light::before,
section.bg-gradient-primary-to-secondary-gray::before {
    display: none;
}

section:nth-of-type(odd) {
    background: var(--career-page) !important;
}

section header h2,
#experience header h2 {
    margin-bottom: var(--career-space-2xl);
    color: var(--career-ink);
    font-family: var(--career-font-display) !important;
    font-size: clamp(1.8rem, 3vw, 2.35rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

section header h2 .bi {
    display: none;
}

section .main-body {
    width: 100%;
    max-width: none;
    color: var(--career-ink);
    font-family: var(--career-font-body);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.75;
}

section .main-body p {
    margin-bottom: 1.15rem;
}

section .main-body strong {
    font-weight: 600;
}

section .main-body ul,
section .main-body ol {
    display: block;
}

section .main-body li {
    margin-bottom: 0.6rem;
    color: var(--career-ink);
}

/* News: consistent, scannable chronology */
#news-md ul {
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--career-line);
    list-style: none;
}

#news-md li {
    display: grid;
    grid-template-columns: minmax(140px, 176px) minmax(0, 1fr);
    gap: var(--career-space-xl);
    margin: 0;
    padding: var(--career-space-lg) 0;
    border-bottom: 1px solid var(--career-line);
}

#news-md .news-date {
    color: var(--career-muted);
    font-size: 0.92rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    line-height: 1.75;
}

#news-md li > span {
    min-width: 0;
    overflow-wrap: normal;
    word-break: normal;
    hyphens: none;
}

#news-md a {
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

#news-md a[href^="#pub-"] {
    font-weight: 600;
}

.publication-anchor {
    position: absolute;
    inset-block-start: 0;
    inset-inline-start: 0;
    scroll-margin-top: 96px;
}

.publication-intro {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: var(--career-space-xl);
    margin-bottom: var(--career-space-xl);
}

.publication-intro h3 {
    margin: 0;
    color: var(--career-ink);
    font-family: var(--career-font-display);
    font-size: clamp(1.3rem, 2vw, 1.6rem);
    font-weight: 700;
    line-height: 1.25;
}

.publication-intro p {
    margin: 0 !important;
    color: var(--career-muted);
    font-size: 0.95rem;
}

#publications .publication-list {
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--career-line);
    list-style: none;
}

#publications .publication-list > li {
    position: relative;
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr);
    gap: var(--career-space-xl);
    margin: 0;
    padding: var(--career-space-xl) 0;
    border-bottom: 1px solid var(--career-line);
}

.publication-meta {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.publication-venue {
    color: var(--career-accent-dark);
    font-size: 0.9rem;
    font-weight: 700;
    line-height: 1.35;
}

.publication-meta time {
    color: var(--career-muted);
    font-size: 0.88rem;
    font-variant-numeric: tabular-nums;
}

.publication-content {
    min-width: 0;
}

#publications .publication-title {
    margin: 0 0 var(--career-space-sm);
    color: var(--career-ink);
    font-size: 1.06rem;
    font-weight: 600;
    line-height: 1.5;
}

#publications .publication-authors {
    margin: 0;
    color: var(--career-muted);
    font-size: 0.94rem;
    line-height: 1.6;
}

.publication-actions {
    display: inline-flex;
    gap: var(--career-space-sm);
    margin-left: var(--career-space-sm);
    white-space: nowrap;
}

.publication-actions a::before {
    content: "[";
}

.publication-actions a::after {
    content: "]";
}

.publication-note {
    display: inline-block;
    margin-left: var(--career-space-sm);
    color: var(--career-accent-dark);
    font-style: italic;
}

#publications li.publication-hit {
    border-radius: 4px;
    background: #e9f0f4;
    box-shadow: 0 0 0 8px #e9f0f4;
    transition: background-color 240ms ease-out, box-shadow 240ms ease-out;
}

/* Awards and service records */
#awards .award-list,
#experience .service-list {
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--career-line);
    list-style: none;
}

#awards .award-list > li,
#experience .service-list > li {
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr);
    gap: var(--career-space-xl);
    margin: 0;
    padding: var(--career-space-lg) 0;
    border-bottom: 1px solid var(--career-line);
}

#awards .award-list > li {
    align-items: baseline;
    padding: var(--career-space-md) 0;
}

#awards .award-list time {
    color: var(--career-muted);
    font-size: 0.9rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

#awards .award-list strong {
    color: var(--career-ink);
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.4;
}

#experience .service-group {
    margin: 0;
    padding: 0;
    border: 0;
    background: transparent !important;
}

#experience .service-group + .service-group {
    margin-top: var(--career-space-3xl);
}

#experience .service-group h3 {
    margin: 0 0 var(--career-space-lg);
    color: var(--career-ink);
    font-family: var(--career-font-display);
    font-size: clamp(1.25rem, 2vw, 1.5rem);
    font-weight: 700;
    line-height: 1.25;
}

.service-meta {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.service-meta span {
    color: var(--career-accent-dark);
    font-size: 0.88rem;
    font-weight: 700;
    line-height: 1.4;
}

.service-meta time {
    color: var(--career-muted);
    font-size: 0.86rem;
    font-variant-numeric: tabular-nums;
}

.service-content {
    min-width: 0;
}

#experience .service-content p {
    margin: 0;
    color: var(--career-muted);
    font-size: 0.92rem;
    line-height: 1.55;
}

#experience .service-content .service-title {
    margin-bottom: 3px;
    color: var(--career-ink);
    font-size: 1.02rem;
    font-weight: 600;
}

.research-map-intro {
    max-width: 760px;
    margin-top: var(--career-space-3xl);
}

.research-map-intro h3 {
    margin: 0 0 var(--career-space-md);
    color: var(--career-ink);
    font-family: var(--career-font-display);
    font-size: clamp(1.35rem, 2.2vw, 1.7rem);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.015em;
}

.research-map-intro p {
    margin: 0;
    color: var(--career-muted);
    font-size: 1rem;
    line-height: 1.65;
}

@media (max-width: 575.98px) {
    #news-md li {
        grid-template-columns: 1fr;
        gap: 2px;
        padding: var(--career-space-md) 0;
    }

    .publication-intro {
        display: block;
    }

    .publication-intro h3 {
        margin-bottom: var(--career-space-sm);
    }

    #publications .publication-list > li {
        grid-template-columns: 1fr;
        gap: var(--career-space-md);
        padding: var(--career-space-lg) 0;
    }

    .publication-meta {
        flex-direction: row;
        align-items: baseline;
        gap: var(--career-space-sm);
    }

    #awards .award-list > li,
    #experience .service-list > li {
        grid-template-columns: 1fr;
        gap: var(--career-space-sm);
        padding: var(--career-space-md) 0;
    }

    .service-meta {
        flex-direction: row;
        align-items: baseline;
        gap: var(--career-space-sm);
    }
}

/* Research map: one restrained visual language */
.research-map {
    --research-map-line: #d9e0e6;
    --research-map-ink: #263746;
    --research-map-muted: #6a7782;
    margin-top: var(--career-space-xl);
    border-color: var(--research-map-line);
    border-radius: 4px;
    background: #fcfdfe;
    scrollbar-color: #91a3b2 transparent;
}

.research-map-corner,
.research-map-phase {
    color: var(--research-map-ink);
    background: #edf1f4;
}

.research-map-corner {
    color: var(--research-map-muted);
    background: #f5f7f8;
}

.research-map-lane {
    color: var(--research-map-ink);
    background: #f6f8f9;
}

.research-map-cell {
    background: #fcfdfe;
}

.research-work,
.work-blue,
.work-green,
.work-amber,
.work-pink,
.work-purple {
    border-color: #7890a4;
    border-radius: 3px;
    background: #f2f6f8;
    color: #315b7d;
}

.research-work:hover {
    background: #e9f0f4;
    color: #24445f;
    transform: none;
}

/* Footer */
.bg-bottom,
footer {
    border: 0;
    background: #263746;
}

footer {
    padding: 36px 0 !important;
}

footer .text-white,
footer a.text-white,
footer .bi {
    color: #e7edf1 !important;
}

footer a:hover {
    color: #ffffff !important;
}

@media (max-width: 991px) {
    body {
        padding-top: 68px;
    }

    .header,
    .header.scrolled {
        padding: 8px 0;
    }

    .header .navbar-collapse {
        padding-top: var(--career-space-md);
    }

    .top-section {
        height: auto;
        padding: 56px 0;
    }

    .top-section .row {
        grid-template-columns: 1fr;
        gap: var(--career-space-2xl);
        text-align: left;
    }

    .top-section .col-lg-4 {
        order: -1;
    }

    #avatar {
        justify-items: start;
        grid-template-columns: auto 1fr;
        column-gap: var(--career-space-lg);
    }

    #avatar img {
        grid-row: 1 / 3;
        width: 96px;
        height: 96px;
    }

    .social-links,
    .location {
        justify-content: flex-start;
    }
}

@media (max-width: 575px) {
    .container.px-5 {
        padding-inline: 24px !important;
    }

    .top-section {
        min-height: 0;
        padding: 40px 0 48px;
    }

    .top-section h2,
    .top-section h2.text-white {
        font-size: 2.65rem !important;
    }

    #avatar {
        grid-template-columns: 76px 1fr;
    }

    #avatar img {
        width: 76px;
        height: 76px;
    }

    .research-map {
        margin-inline: -12px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}