:root {
    --bg-color: #fbfbfd;
    --text-color: #1d1d1f;
    --header-bg: rgba(251, 251, 253, 0.92);
    --accent-color: #0a66cf;
    --hover-color: #005ecb;
    --secondary-text: #6e6e73;
    --section-border: rgba(0, 0, 0, 0.12);
    --shadow-color: rgba(15, 23, 42, 0.1);
    --content-max-width: 980px;
    --content-gutter: 1rem;
    --spacing-xs: 4px;
    --spacing-sm: 6px;
    --spacing-md: 10px;
    --spacing-lg: 14px;
    --spacing-xl: 20px;
    --item-gap: 8px;
    --control-radius: 6px;
}

.dark-mode {
    --bg-color: #111214;
    --text-color: #f5f5f7;
    --header-bg: rgba(17, 18, 20, 0.92);
    --accent-color: #94c6ff;
    --hover-color: #b2d9ff;
    --secondary-text: #a1a1aa;
    --section-border: rgba(255, 255, 255, 0.16);
    --shadow-color: rgba(0, 0, 0, 0.4);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    max-width: 100vw;
    margin: 0;
    overflow-x: hidden;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    transition: background-color 0.3s ease, color 0.3s ease;
}

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

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--hover-color);
}

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 3px;
}

h1,
h2,
h3 {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
    letter-spacing: 0;
}

.container {
    width: 100%;
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 0 var(--content-gutter);
}

#navbar {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    z-index: 1000;
    height: 56px;
    border-bottom: 1px solid var(--section-border);
    background-color: var(--header-bg);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    transition: background-color 0.3s ease;
}

#navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 92%;
    max-width: 1120px;
    height: 56px;
    padding-right: 1.75rem;
    padding-left: 1.75rem;
}

#navbar .logo {
    color: var(--text-color);
    font-size: 1.1em;
    font-weight: 600;
}

#primary-nav {
    display: flex;
    list-style: none;
    transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

#primary-nav li {
    margin: 0 12px;
}

#primary-nav a {
    color: var(--text-color);
    font-weight: 500;
}

#primary-nav a:hover {
    color: var(--hover-color);
}

#hamburger-menu {
    position: relative;
    display: none;
    width: 40px;
    height: 40px;
    padding: var(--item-gap);
    border: none;
    border-radius: var(--control-radius);
    background: none;
    cursor: pointer;
    transition: transform 0.25s cubic-bezier(0.25, 0.1, 0.25, 1), background-color 0.25s ease;
}

#hamburger-menu:hover {
    background-color: var(--shadow-color);
    transform: scale(1.05);
}

.hamburger-line {
    position: absolute;
    left: 8px;
    display: block;
    width: 24px;
    height: 3px;
    border-radius: 2px;
    background-color: var(--text-color);
    transform-origin: center;
    transition: all 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.hamburger-line:nth-child(1) {
    top: 10px;
}

.hamburger-line:nth-child(2) {
    top: 18px;
}

.hamburger-line:nth-child(3) {
    top: 26px;
}

#hamburger-menu.active .hamburger-line:nth-child(1) {
    top: 18px;
    transform: rotate(45deg);
}

#hamburger-menu.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: translateX(20px);
}

#hamburger-menu.active .hamburger-line:nth-child(3) {
    top: 18px;
    transform: rotate(-45deg);
}

#mode-toggle {
    --toggle-track: rgba(240, 244, 248, 0.92);
    --toggle-border: rgba(47, 58, 72, 0.14);
    --toggle-thumb: rgba(255, 255, 255, 0.9);
    --toggle-highlight: rgba(255, 255, 255, 0.84);
    --toggle-shadow: rgba(42, 55, 71, 0.12);
    --sun-color: #7f98ad;
    --moon-color: #7c8793;
    position: relative;
    display: flex;
    align-items: center;
    width: 54px;
    height: 28px;
    padding: 0;
    border: 1px solid var(--toggle-border);
    border-radius: 999px;
    background: var(--toggle-track);
    box-shadow: inset 0 1px 0 var(--toggle-highlight), 0 1px 2px rgba(15, 23, 42, 0.04);
    cursor: pointer;
    isolation: isolate;
    transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease, background-color 0.22s ease;
}

#mode-toggle:hover {
    border-color: rgba(91, 132, 174, 0.28);
    box-shadow: 0 5px 12px rgba(45, 83, 120, 0.1), inset 0 1px 0 var(--toggle-highlight);
    transform: translateY(-1px);
}

#mode-toggle:active {
    transform: translateY(-1px);
}

#mode-toggle .moon,
#mode-toggle .sun {
    position: absolute;
    top: 50%;
    z-index: 1;
    display: block;
    width: 14px;
    height: 14px;
    opacity: 0.72;
    transform: translateY(-50%);
    transform-origin: center;
    transition: opacity 0.22s ease, transform 0.28s cubic-bezier(0.2, 0.8, 0.2, 1);
}

#mode-toggle .sun {
    left: 6px;
    opacity: 1;
}

#mode-toggle .moon {
    right: 6px;
}

#mode-toggle .sun::before {
    position: absolute;
    top: 1px;
    left: 1px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--sun-color);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.24);
    content: "";
}

#mode-toggle .moon svg {
    display: block;
    width: 14px;
    height: 14px;
    fill: var(--moon-color);
}

#mode-toggle:hover .sun {
    transform: translateY(-50%) scale(1.04);
}

#mode-toggle:hover .moon {
    transform: translateY(-50%) scale(1.04);
}

#mode-toggle::before {
    position: absolute;
    top: 2px;
    left: 3px;
    z-index: 0;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--toggle-thumb);
    box-shadow: 0 1px 5px var(--toggle-shadow);
    content: "";
    transform: translateX(0);
    transition: transform 0.36s cubic-bezier(0.2, 0.8, 0.2, 1), background-color 0.24s ease, box-shadow 0.24s ease;
}

.dark-mode #mode-toggle {
    --toggle-track: rgba(30, 34, 41, 0.92);
    --toggle-border: rgba(255, 255, 255, 0.18);
    --toggle-thumb: #303743;
    --toggle-highlight: rgba(255, 255, 255, 0.07);
    --toggle-shadow: rgba(0, 0, 0, 0.42);
    --sun-color: #748191;
    --moon-color: #d8e9ff;
}

.dark-mode #mode-toggle:hover {
    border-color: rgba(148, 198, 255, 0.32);
    box-shadow: 0 5px 12px rgba(148, 198, 255, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.dark-mode #mode-toggle .sun {
    opacity: 0.62;
}

.dark-mode #mode-toggle .moon {
    opacity: 1;
}

.dark-mode #mode-toggle:hover .moon {
    transform: translateY(-50%) rotate(-8deg) scale(1.04);
}

.dark-mode #mode-toggle::before {
    background: #303743;
    box-shadow: 0 1px 5px rgba(0, 0, 0, 0.42);
    transform: translateX(26px);
}

header {
    padding: 68px 0 20px;
    background: transparent;
}

.profile-container {
    display: flex;
    flex-direction: row-reverse;
    align-items: center;
    justify-content: space-between;
    gap: 26px;
}

.photo-container {
    flex-shrink: 0;
    width: clamp(106px, 22vw, 140px);
    aspect-ratio: 2 / 3;
}

header img {
    width: 100%;
    height: 100%;
    border-radius: 12px;
    box-shadow: 0 6px 24px var(--shadow-color);
    object-fit: cover;
}

.text-content {
    flex: 1;
    max-width: 520px;
    padding-top: var(--spacing-xs);
}

h1 {
    margin: 0 0 var(--spacing-sm);
    color: var(--text-color);
    font-size: 28px;
}

.biography {
    margin: var(--spacing-sm) 0 12px;
    line-height: 1.5;
}

.contact-info {
    margin-top: var(--spacing-lg);
}

.social-links {
    display: flex;
    align-items: center;
    gap: 25px;
    margin: var(--spacing-xl) 0 0;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 5px;
    color: var(--text-color);
    font-size: 24px;
    transition: color 0.3s ease, transform 0.3s ease;
}

.social-links a:hover {
    color: var(--accent-color);
    transform: translateY(-3px) scale(1.18);
}

main.compact-grid {
    width: 100%;
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding-top: 22px;
    padding-bottom: 56px;
    border-top: 1px solid var(--section-border);
}

.section {
    scroll-margin-top: 70px;
    padding: 28px 0;
    border-top: 1px solid var(--section-border);
}

.section:first-of-type {
    padding-top: 6px;
    border-top: none;
}

.section > *:first-child {
    margin-top: 0;
}

.section > *:last-child {
    margin-bottom: 0;
}

.section h2 {
    margin: 0 0 12px;
    color: var(--text-color);
    font-size: 1.35rem;
    font-weight: 600;
}

.section strong {
    color: var(--text-color);
}

.section ul:not(.news-list) {
    margin: 0;
    padding-left: 0;
    list-style: none;
}

.section ul:not(.news-list) > li,
#publications .experience-item {
    position: relative;
    padding-left: 1rem;
}

.section ul:not(.news-list) > li::before,
#publications .experience-item::before {
    position: absolute;
    top: 0.26em;
    left: 0;
    color: var(--text-color);
    font-size: 0.88rem;
    font-weight: 500;
    line-height: 1;
    content: "\2022";
}

.about-intro {
    margin-bottom: 8px;
    color: var(--text-color);
}

.about-research-heading {
    margin: 0 0 6px;
    color: var(--text-color);
}

.about-research-list {
    color: var(--text-color);
}

.news-section h2 {
    margin-bottom: var(--spacing-sm);
}

.news-scroller {
    max-height: 240px;
    margin-top: var(--spacing-sm);
    padding-right: var(--spacing-sm);
    overflow-y: auto;
    scrollbar-color: rgba(28, 44, 76, 0.38) transparent;
    scrollbar-width: thin;
}

.news-scroller::-webkit-scrollbar {
    width: 10px;
}

.news-scroller::-webkit-scrollbar-track,
.news-scroller::-webkit-scrollbar-corner {
    background: transparent;
}

.news-scroller::-webkit-scrollbar-thumb {
    min-height: 28px;
    border: 2px solid transparent;
    border-radius: 999px;
    background-color: rgba(28, 44, 76, 0.38);
    background-clip: padding-box;
}

.news-scroller::-webkit-scrollbar-thumb:hover {
    background-color: rgba(28, 44, 76, 0.56);
}

.dark-mode .news-scroller {
    scrollbar-color: rgba(171, 186, 212, 0.55) transparent;
}

.dark-mode .news-scroller::-webkit-scrollbar-thumb {
    background-color: rgba(171, 186, 212, 0.55);
}

.dark-mode .news-scroller::-webkit-scrollbar-thumb:hover {
    background-color: rgba(171, 186, 212, 0.76);
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.news-item {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: var(--item-gap);
    padding: 4px 0;
    line-height: 1.5;
}

.news-date {
    color: var(--secondary-text);
    font-size: 13px;
    line-height: 24px;
    white-space: nowrap;
}

.news-content {
    color: var(--text-color);
    font-size: 16px;
    line-height: 1.5;
}

.section-heading-link {
    margin-left: 10px;
    color: var(--accent-color);
    font-size: 22px;
}

.publication-note {
    margin: 6px 0 10px;
    color: var(--secondary-text);
    font-size: 0.9em;
}

.experience-item {
    margin-bottom: 18px;
}

.experience-item h3 {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin: 0 0 2px;
    color: var(--text-color);
    font-size: 16px;
    font-weight: 400;
}

.experience-item p,
.authors,
.venue {
    margin: var(--spacing-xs) 0;
    color: var(--text-color);
    font-size: 16px;
    line-height: 1.5;
}

.venue {
    font-style: normal;
    font-weight: 400;
}

.service-item {
    margin-bottom: 12px;
}

footer {
    padding: var(--spacing-md) 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    text-align: center;
}

@media (max-width: 768px) {
    :root {
        --content-gutter: 1.35rem;
    }

    #navbar .container {
        max-width: none;
        padding-right: 0.95rem;
        padding-left: 0.95rem;
    }

    #hamburger-menu {
        display: block;
    }

    #primary-nav {
        position: absolute;
        top: calc(100% - 1px);
        left: 0;
        display: flex;
        flex-direction: column;
        width: 100%;
        margin: 0;
        padding: 15px 0;
        border: 1px solid var(--section-border);
        border-top: none;
        border-radius: 0 0 12px 12px;
        background-color: rgba(251, 251, 253, 0.96);
        box-shadow: 0 14px 34px rgba(15, 23, 42, 0.16);
        opacity: 0;
        pointer-events: none;
        transform: translateY(-30px) scale(0.95);
        visibility: hidden;
        backdrop-filter: saturate(180%) blur(20px);
        -webkit-backdrop-filter: saturate(180%) blur(20px);
    }

    .dark-mode #primary-nav {
        background-color: rgba(20, 22, 26, 0.95);
    }

    #primary-nav.active {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0) scale(1);
        visibility: visible;
    }

    #primary-nav li {
        position: relative;
        margin: 0;
        overflow: hidden;
        border-radius: 8px;
        opacity: 0;
        text-align: center;
        transform: translateY(-15px);
        transition: opacity 0.4s cubic-bezier(0.25, 0.1, 0.25, 1), transform 0.4s cubic-bezier(0.25, 0.1, 0.25, 1), background-color 0.1s ease-out;
    }

    #primary-nav li:hover {
        background-color: var(--shadow-color);
        transform: translateY(-15px) scale(1.01);
    }

    #primary-nav.active li {
        opacity: 1;
        transform: translateY(0);
    }

    #primary-nav a {
        display: block;
        width: 100%;
        padding: 18px 30px;
    }

    #primary-nav.active li:nth-child(1) {
        transition-delay: 0.1s;
    }

    #primary-nav.active li:nth-child(2) {
        transition-delay: 0.2s;
    }

    #primary-nav.active li:nth-child(3) {
        transition-delay: 0.3s;
    }

    #primary-nav.active li:nth-child(4) {
        transition-delay: 0.4s;
    }

    #primary-nav.active li:nth-child(5) {
        transition-delay: 0.5s;
    }

    header {
        padding-top: 64px;
        padding-bottom: 12px;
    }

    .profile-container {
        gap: 20px;
    }

    .text-content {
        max-width: 100%;
        padding-top: 0;
    }

    .section {
        padding: 24px 0;
    }

    .experience-item h3 {
        flex-direction: column;
        align-items: flex-start;
    }

    .social-links {
        justify-content: flex-start;
        gap: 18px;
        margin-top: 15px;
    }

    .social-links a {
        font-size: 20px;
    }
}

@media (max-width: 600px) {
    .profile-container {
        gap: 18px;
    }
}

@media (max-width: 480px) {
    :root {
        --content-gutter: 1.2rem;
    }

    header {
        padding-bottom: 8px;
    }

    .profile-container {
        gap: 16px;
    }

    h1 {
        font-size: 24px;
    }

    .biography,
    .contact-info {
        font-size: 14px;
    }

    .section h2 {
        font-size: 1.25rem;
    }

    .news-scroller {
        max-height: 300px;
    }

    .social-links {
        gap: 15px;
        margin-top: 12px;
    }

    .social-links a {
        font-size: 18px;
    }
}

@media (max-width: 360px) {
    :root {
        --content-gutter: 0.95rem;
    }

    .profile-container {
        gap: 12px;
    }

    h1 {
        font-size: 20px;
    }

    .biography {
        margin: 10px 0;
        font-size: 13px;
    }

    .contact-info {
        margin-top: 15px;
        font-size: 13px;
    }

    .news-scroller {
        max-height: 320px;
    }

    .social-links {
        gap: 12px;
        margin-top: 10px;
    }

    .social-links a {
        font-size: 16px;
    }
}