:root {
    --primary-color: #183f4e;
    --secondary-color: #596f43;
    --accent-color: #b35642;
    --gold-color: #b9873f;
    --bg-white: #ffffff;
    --bg-soft: #f4f7f4;
    --bg-muted: #eef4f2;
    --text-dark: #172126;
    --text-gray: #4e5a5e;
    --text-light: #718086;
    --border-color: #dce5e2;
    --shadow: 0 18px 45px rgba(18, 41, 49, 0.1);
    --shadow-subtle: 0 10px 28px rgba(18, 41, 49, 0.07);
    --serif: 'Noto Serif SC', serif;
    --sans: 'Source Sans 3', 'Noto Serif SC', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 84px;
}

body {
    font-family: var(--sans);
    line-height: 1.75;
    color: var(--text-dark);
    background: var(--bg-white);
    text-rendering: optimizeLegibility;
}

body.nav-open {
    overflow: hidden;
}

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

a {
    color: inherit;
}

strong {
    color: var(--primary-color);
    font-weight: 700;
}

.skip-link {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 2000;
    transform: translateY(-140%);
    padding: 10px 14px;
    background: var(--primary-color);
    color: #fff;
    border-radius: 6px;
    text-decoration: none;
}

.skip-link:focus {
    transform: translateY(0);
}

.container {
    width: min(1120px, calc(100% - 40px));
    margin: 0 auto;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    border-bottom: 1px solid rgba(220, 229, 226, 0.76);
    backdrop-filter: blur(14px);
    transition: box-shadow 0.25s ease, background 0.25s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 8px 28px rgba(18, 41, 49, 0.08);
}

.nav-container {
    width: min(1120px, calc(100% - 40px));
    min-height: 72px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
}

.logo {
    display: inline-flex;
    align-items: baseline;
    gap: 4px;
    font-family: var(--serif);
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    white-space: nowrap;
}

.logo-econ {
    font-family: var(--sans);
    font-size: 13px;
    color: var(--accent-color);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
}

.nav-links a {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 0 11px;
    border-radius: 6px;
    text-decoration: none;
    color: var(--text-gray);
    font-weight: 600;
    font-size: 15px;
    transition: color 0.2s ease, background 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary-color);
    background: var(--bg-muted);
}

.language-switcher {
    display: flex;
    align-items: center;
    margin-left: 6px;
    list-style: none;
}

.language-toggle {
    min-height: 34px;
    padding: 0 11px;
    border: 1px solid rgba(24, 63, 78, 0.28);
    border-radius: 6px;
    background: #fff;
    color: var(--primary-color);
    font: inherit;
    font-size: 14px;
    font-weight: 700;
    line-height: 1;
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.language-toggle:hover,
.language-toggle:focus-visible {
    border-color: var(--accent-color);
    background: rgba(179, 86, 66, 0.08);
    color: var(--accent-color);
    outline: none;
}

.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: #fff;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 19px;
    height: 2px;
    background: var(--primary-color);
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.hero {
    position: relative;
    min-height: 88vh;
    padding: 118px 20px 56px;
    display: grid;
    place-items: center;
    overflow: hidden;
    background: linear-gradient(90deg, rgba(248, 252, 250, 0.4), rgba(248, 252, 250, 0.3)), url('../主页背景.JPG') center/cover no-repeat;
}

.hero::after {
    content: '';
    position: absolute;
    inset: auto 0 0;
    height: 18%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0), #fff);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    width: min(920px, 100%);
    text-align: center;
    animation: fadeInUp 0.7s ease both;
}

.hero-kicker,
.section-eyebrow {
    color: var(--accent-color);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.hero-kicker {
    margin-bottom: 18px;
}

.avatar {
    width: 138px;
    height: 138px;
    margin: 0 auto 26px;
    border-radius: 50%;
    padding: 4px;
    background: #fff;
    box-shadow: var(--shadow);
}

.avatar-photo {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.hero h1 {
    font-family: var(--serif);
    font-size: clamp(42px, 7vw, 68px);
    line-height: 1.1;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.hero .title {
    color: var(--text-dark);
    font-size: clamp(18px, 2.6vw, 24px);
    font-weight: 600;
    margin-bottom: 8px;
}

.hero .affiliation {
    max-width: 720px;
    margin: 0 auto;
    color: var(--text-gray);
    font-size: 17px;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin: 30px 0 34px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 22px;
    border-radius: 8px;
    border: 1px solid transparent;
    text-decoration: none;
    font-weight: 700;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: var(--primary-color);
    color: #fff;
    box-shadow: 0 12px 28px rgba(24, 63, 78, 0.18);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.72);
    color: var(--primary-color);
    border-color: rgba(24, 63, 78, 0.24);
}

.hero-highlights {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    max-width: 840px;
    margin: 0 auto;
    list-style: none;
}

.hero-highlights li {
    min-height: 104px;
    padding: 18px;
    border: 1px solid rgba(220, 229, 226, 0.88);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.76);
    box-shadow: var(--shadow-subtle);
    text-align: left;
}

.hero-highlights strong {
    display: block;
    margin-bottom: 5px;
    color: var(--secondary-color);
    font-size: 13px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero-highlights span {
    display: block;
    color: var(--text-gray);
    font-size: 15px;
    line-height: 1.55;
}

.section {
    padding: 92px 0;
}

.js-enabled [data-page-view]:not(.is-active-view),
[data-page-view][hidden] {
    display: none !important;
}

main > .section.is-active-view {
    min-height: calc(100vh - 72px);
}

.section-alt {
    background: var(--bg-soft);
}

.section-heading {
    max-width: 760px;
    margin: 0 auto 48px;
    text-align: center;
}

.section-title {
    font-family: var(--serif);
    font-size: clamp(30px, 4vw, 42px);
    line-height: 1.25;
    color: var(--primary-color);
    margin-top: 6px;
}

.about-content {
    display: grid;
    grid-template-columns: minmax(0, 640px) minmax(300px, 340px);
    justify-content: center;
    gap: 56px;
    align-items: start;
}

.about-text {
    min-width: 0;
}

.about-text p {
    margin-bottom: 18px;
    color: var(--text-gray);
    font-size: 17px;
    line-height: 1.86;
}

.interest-list {
    display: grid;
    gap: 10px;
    list-style: none;
    margin-top: 20px;
}

.interest-list li {
    position: relative;
    padding: 12px 14px 12px 36px;
    border-left: 3px solid var(--accent-color);
    background: var(--bg-soft);
    border-radius: 0 8px 8px 0;
    color: var(--text-gray);
}

.interest-list li::before {
    content: '';
    position: absolute;
    left: 14px;
    top: 24px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--gold-color);
}

.profile-card,
.research-card,
.project-item,
.award-card {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: #fff;
    box-shadow: var(--shadow-subtle);
}

.profile-card {
    padding: 22px 24px;
}

.about-side {
    display: grid;
    grid-template-rows: auto auto;
    gap: 18px;
    align-self: start;
    min-height: 0;
}

.about-portrait {
    display: grid;
    grid-template-rows: auto auto;
    width: 100%;
    margin: 0;
    overflow: hidden;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: #fff;
    box-shadow: var(--shadow-subtle);
}

.about-portrait-image {
    position: relative;
    min-height: 0;
    aspect-ratio: 3 / 4;
    overflow: hidden;
}

.about-portrait img {
    position: absolute;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 43%;
}

.about-portrait figcaption {
    padding: 10px 14px;
    border-top: 1px solid var(--border-color);
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.4;
    text-align: center;
    background: #fff;
}

.profile-card h3 {
    font-family: var(--serif);
    font-size: 22px;
    color: var(--primary-color);
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.edu-item {
    display: grid;
    gap: 3px;
    padding: 12px 0;
    border-bottom: 1px dashed var(--border-color);
}

.edu-item:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.edu-item .year {
    color: var(--accent-color);
    font-size: 14px;
    font-weight: 700;
}

.edu-item .degree {
    color: var(--text-dark);
    font-size: 18px;
    font-weight: 700;
}

.edu-item .school {
    color: var(--text-gray);
    font-size: 15px;
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.life-intro {
    max-width: 720px;
    margin: -28px auto 28px;
    text-align: center;
    color: var(--text-gray);
    font-size: 16px;
    line-height: 1.8;
}

.life-intro p + p {
    margin-top: 8px;
}

.life-photo-layout {
    display: grid;
    gap: 34px;
}

.life-panel {
    min-width: 0;
}

.life-gallery {
    --life-row-height: clamp(210px, 20vw, 286px);
    --life-column-width: clamp(212px, 17vw, 286px);
    display: grid;
    grid-auto-flow: column dense;
    grid-template-rows: repeat(2, var(--life-row-height));
    grid-auto-columns: var(--life-column-width);
    grid-auto-rows: var(--life-row-height);
    align-items: stretch;
    gap: 16px;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scroll-snap-type: x proximity;
    scroll-padding-inline: max(20px, calc((100vw - 1120px) / 2));
    padding: 6px 4px 22px;
    scrollbar-gutter: stable;
}

.life-gallery-landscape {
    --life-row-height: clamp(220px, 19vw, 296px);
    --life-column-width: clamp(218px, 16vw, 282px);
}

.life-gallery-portrait {
    --life-row-height: clamp(330px, 31vw, 430px);
    --life-column-width: clamp(186px, 15vw, 238px);
    grid-template-rows: var(--life-row-height);
    grid-auto-rows: var(--life-row-height);
}

.life-gallery.is-auto-scrolling {
    scroll-snap-type: none;
}

.life-gallery::-webkit-scrollbar {
    height: 10px;
}

.life-gallery::-webkit-scrollbar-track {
    background: rgba(220, 229, 226, 0.65);
    border-radius: 999px;
}

.life-gallery::-webkit-scrollbar-thumb {
    background: rgba(89, 111, 67, 0.58);
    border-radius: 999px;
}

.life-photo {
    scroll-snap-align: start;
    display: grid;
    grid-template-rows: minmax(0, 1fr) auto;
    min-height: 0;
    overflow: hidden;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: var(--shadow-subtle);
    transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.life-photo-featured {
    grid-column: span 2;
    grid-row: span 2;
}

.life-gallery-landscape .life-photo-featured {
    grid-column: span 3;
}

.life-photo-panorama,
.life-photo-landscape {
    grid-column: span 2;
}

.life-photo-panorama {
    grid-column: span 3;
    grid-row: span 2;
}

.life-photo-portrait {
    grid-row: span 2;
}

.life-gallery-portrait .life-photo-portrait {
    grid-row: span 1;
}

.life-photo:hover {
    transform: translateY(-4px);
    border-color: rgba(179, 86, 66, 0.28);
    box-shadow: var(--shadow);
}

.life-photo img {
    width: 100%;
    height: 100%;
    min-height: 0;
    object-fit: cover;
    object-position: center;
    background: var(--bg-soft);
}

.life-photo-featured img,
.life-photo-landscape img,
.life-photo-panorama img {
    object-position: center 44%;
}

.life-photo figcaption {
    min-height: 46px;
    padding: 11px 14px;
    border-top: 1px solid rgba(220, 229, 226, 0.72);
    background: rgba(255, 255, 255, 0.92);
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.45;
    overflow-wrap: anywhere;
}

.research-card {
    min-height: 230px;
    padding: 24px;
    transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.research-card:hover {
    transform: translateY(-4px);
    border-color: rgba(179, 86, 66, 0.48);
    box-shadow: var(--shadow);
}

.research-mark,
.award-index,
.contact-label,
.project-type {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 28px;
    padding: 0 10px;
    border-radius: 6px;
    background: var(--bg-muted);
    color: var(--secondary-color);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.research-card h3 {
    font-family: var(--serif);
    font-size: 21px;
    color: var(--primary-color);
    margin: 18px 0 10px;
}

.research-card p,
.project-item p,
.award-card p,
.conf-content p,
.pub-content p {
    color: var(--text-gray);
}

.subsection-title {
    max-width: 940px;
    margin: 42px auto 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    font-family: var(--serif);
    font-size: 23px;
    color: var(--secondary-color);
}

.subsection-title:first-of-type {
    margin-top: 0;
}

.publications-list {
    max-width: 940px;
    margin: 0 auto;
}

.pub-item {
    display: grid;
    grid-template-columns: 86px minmax(0, 1fr);
    gap: 22px;
    padding: 24px 0;
    border-bottom: 1px solid var(--border-color);
}

.pub-item:last-child {
    border-bottom: 0;
}

.pub-year {
    width: fit-content;
    min-width: 62px;
    height: 32px;
    padding: 0 10px;
    border-radius: 6px;
    background: rgba(179, 86, 66, 0.1);
    color: var(--accent-color);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 800;
    white-space: nowrap;
}

.working-papers .pub-year {
    background: rgba(89, 111, 67, 0.12);
    color: var(--secondary-color);
}

.pub-content h3 {
    font-size: 19px;
    line-height: 1.55;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.pub-authors,
.pub-journal,
.pub-keywords,
.pub-language {
    font-size: 15px;
}

.collaborator-link {
    color: var(--primary-color);
    font-weight: 700;
    text-decoration-line: underline;
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.18em;
    transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

.collaborator-link:hover,
.collaborator-link:focus-visible {
    color: var(--accent-color);
    text-decoration-color: var(--accent-color);
}

.collaborator-link:focus-visible {
    outline: 2px solid rgba(179, 86, 66, 0.35);
    outline-offset: 3px;
}

.pub-journal {
    margin-top: 4px;
    font-style: italic;
}

.pub-language {
    width: fit-content;
    margin-top: 8px;
    padding: 2px 8px;
    border-radius: 6px;
    background: rgba(89, 111, 67, 0.12);
    color: var(--secondary-color);
    font-weight: 700;
}

.pub-details {
    margin-top: 14px;
}

.pub-details summary {
    width: fit-content;
    cursor: pointer;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 14px;
    list-style-position: inside;
}

.pub-details summary:hover {
    color: var(--accent-color);
}

.pub-abstract {
    margin-top: 12px;
    padding: 16px;
    border-radius: 8px;
    background: var(--bg-soft);
    border-left: 3px solid var(--accent-color);
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.8;
    text-align: justify;
}

.pub-keywords {
    margin-top: 10px;
}

.projects-list {
    max-width: 860px;
    margin: 0 auto;
    display: grid;
    gap: 16px;
}

.project-item {
    padding: 24px 26px;
}

.project-item h3 {
    font-family: var(--serif);
    font-size: 19px;
    line-height: 1.5;
    color: var(--text-dark);
    margin: 12px 0 4px;
}

.awards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.award-card {
    min-height: 190px;
    padding: 22px;
}

.award-card h3 {
    font-family: var(--serif);
    font-size: 17px;
    line-height: 1.55;
    color: var(--primary-color);
    margin: 18px 0 10px;
}

.conferences-list {
    max-width: 900px;
    margin: 0 auto;
    border-top: 1px solid var(--border-color);
}

.conference-item {
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 18px;
    padding: 18px 0;
    border-bottom: 1px solid var(--border-color);
}

.conf-year {
    color: var(--accent-color);
    font-weight: 800;
}

.conf-content h4 {
    font-size: 16px;
    line-height: 1.45;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.academic-goods-intro {
    max-width: 760px;
    margin: -22px auto 34px;
    text-align: center;
}

.academic-goods-intro h3 {
    margin-bottom: 8px;
    font-family: var(--serif);
    font-size: 24px;
    color: var(--secondary-color);
}

.academic-goods-intro p {
    color: var(--text-gray);
}

.reading-notes-grid {
    max-width: 980px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.reading-note-card {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    grid-template-areas:
        "type content"
        "type download";
    align-items: start;
    gap: 12px 16px;
    min-height: 168px;
    padding: 22px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.94);
    box-shadow: var(--shadow-subtle);
}

.reading-note-type {
    grid-area: type;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 54px;
    min-height: 64px;
    border-radius: 8px;
    background: var(--accent-color);
    color: #fff;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.reading-note-content {
    grid-area: content;
    min-width: 0;
}

.reading-note-content h3 {
    margin-bottom: 5px;
    color: var(--primary-color);
    font-family: var(--serif);
    font-size: 18px;
    line-height: 1.45;
    overflow-wrap: anywhere;
}

.reading-note-content p {
    color: var(--text-light);
    font-size: 14px;
}

.reading-note-download {
    grid-area: download;
    width: fit-content;
    padding: 7px 12px;
    border: 1px solid rgba(24, 63, 78, 0.24);
    border-radius: 6px;
    color: var(--primary-color);
    font-size: 14px;
    font-weight: 700;
    line-height: 1.4;
    text-decoration: none;
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.reading-note-download:hover,
.reading-note-download:focus-visible {
    border-color: var(--accent-color);
    background: rgba(179, 86, 66, 0.08);
    color: var(--accent-color);
    outline: none;
}

.contact-content {
    max-width: 760px;
    margin: 0 auto;
    display: grid;
    gap: 14px;
}

.contact-item {
    display: grid;
    grid-template-columns: 96px minmax(0, 1fr);
    align-items: center;
    gap: 16px;
    min-height: 72px;
    padding: 18px 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-soft);
    color: var(--text-gray);
    text-decoration: none;
}

a.contact-item {
    transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

a.contact-item:hover {
    transform: translateY(-2px);
    border-color: rgba(179, 86, 66, 0.48);
    background: #fff;
}

footer {
    background: var(--primary-color);
    color: #fff;
    padding: 32px 0;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    flex-wrap: wrap;
}

footer p {
    opacity: 0.9;
}

.footer-meta {
    display: flex;
    align-items: center;
    gap: 18px;
}

.visitor-counters {
    display: flex;
    align-items: baseline;
    gap: 10px;
    flex-wrap: wrap;
}

.visitor-counter {
    display: inline-flex;
    align-items: baseline;
    gap: 7px;
    font-size: 14px;
}

.visitor-counter strong {
    min-width: 2ch;
    color: #fff;
    font-variant-numeric: tabular-nums;
}

.visitor-counter-divider {
    opacity: 0.4;
}

.footer-note {
    font-size: 14px;
    opacity: 0.72;
}

html.js-enabled .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.55s ease, transform 0.55s ease;
}

html.js-enabled .reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(22px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 980px) {
    .research-grid,
    .awards-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-content {
        grid-template-columns: 1fr;
        justify-content: stretch;
        align-items: start;
    }

    .about-side {
        grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
        grid-template-rows: auto;
        align-items: start;
        width: 100%;
    }

    .about-portrait-image {
        min-height: 0;
        aspect-ratio: 3 / 4;
    }
}

@media (max-width: 960px) {
    .nav-container {
        min-height: 64px;
    }

    .nav-toggle {
        display: inline-flex;
    }

    .nav-links {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 4px;
        max-height: calc(100dvh - 64px);
        padding: 14px;
        overflow-y: auto;
        background: rgba(255, 255, 255, 0.98);
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 18px 34px rgba(18, 41, 49, 0.12);
        transform: translateY(-120%);
        opacity: 0;
        pointer-events: none;
        transition: transform 0.22s ease, opacity 0.22s ease;
    }

    body.nav-open .nav-links {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav-links a {
        min-height: 44px;
        justify-content: center;
        font-size: 16px;
    }

    .language-switcher {
        grid-column: 1 / -1;
        margin: 4px 0 0;
        justify-content: center;
    }

    .language-toggle {
        min-height: 40px;
        min-width: 108px;
        font-size: 15px;
    }
}

@media (max-width: 768px) {
    html {
        scroll-padding-top: 72px;
    }

    .container,
    .nav-container {
        width: min(100% - 28px, 1120px);
    }

    .nav-container {
        min-height: 64px;
    }

    .nav-toggle {
        display: inline-flex;
    }

    .nav-links {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        display: grid;
        gap: 4px;
        padding: 14px;
        background: rgba(255, 255, 255, 0.98);
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 18px 34px rgba(18, 41, 49, 0.12);
        transform: translateY(-120%);
        opacity: 0;
        pointer-events: none;
        transition: transform 0.22s ease, opacity 0.22s ease;
    }

    body.nav-open .nav-links {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav-links a {
        min-height: 44px;
        justify-content: center;
        font-size: 16px;
    }

    .language-switcher {
        margin: 4px 0 0;
        justify-content: center;
    }

    .language-toggle {
        min-height: 40px;
        min-width: 108px;
        font-size: 15px;
    }

    .hero {
        min-height: 92vh;
        padding: 94px 14px 42px;
        place-items: start center;
    }

    .avatar {
        width: 120px;
        height: 120px;
        margin-bottom: 22px;
    }

    .hero .affiliation {
        font-size: 16px;
    }

    .hero-highlights {
        grid-template-columns: 1fr;
        max-width: 520px;
    }

    .hero-highlights li {
        min-height: auto;
        padding: 14px 16px;
    }

    .section {
        padding: 68px 0;
    }

    .section-heading {
        margin-bottom: 34px;
    }

    .research-grid,
    .awards-grid,
    .reading-notes-grid {
        grid-template-columns: 1fr;
    }

    .about-side {
        grid-template-columns: 1fr;
    }

    .about-portrait {
        width: min(100%, 340px);
        justify-self: center;
    }

    .research-card,
    .award-card {
        min-height: auto;
    }

    .life-gallery {
        --life-row-height: clamp(184px, 44vw, 226px);
        --life-column-width: minmax(170px, 56vw);
        grid-template-rows: repeat(2, var(--life-row-height));
        grid-auto-rows: var(--life-row-height);
        gap: 12px;
        padding-bottom: 18px;
    }

    .life-photo-layout {
        gap: 28px;
    }

    .life-gallery-landscape {
        --life-row-height: clamp(188px, 46vw, 236px);
        --life-column-width: minmax(172px, 56vw);
    }

    .life-gallery-portrait {
        --life-row-height: clamp(320px, 86vw, 390px);
        --life-column-width: minmax(184px, 54vw);
        grid-template-rows: var(--life-row-height);
        grid-auto-rows: var(--life-row-height);
    }

    .life-gallery-landscape .life-photo-featured {
        grid-column: span 2;
    }

    .life-photo-landscape,
    .life-photo-panorama {
        grid-column: span 2;
    }

    .life-photo-panorama {
        grid-column: span 4;
    }

    .life-gallery-portrait .life-photo-portrait {
        grid-row: span 1;
    }

    .life-photo img {
        height: 100%;
        aspect-ratio: auto;
    }

    .life-photo figcaption {
        min-height: 42px;
        padding: 9px 11px;
        font-size: 13px;
    }

    .pub-item {
        grid-template-columns: 1fr;
        gap: 12px;
        padding: 22px 0;
    }

    .pub-content h3 {
        font-size: 18px;
    }

    .conference-item {
        grid-template-columns: 56px minmax(0, 1fr);
        gap: 12px;
    }

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

    .footer-inner {
        align-items: flex-start;
        flex-direction: column;
    }

    .footer-meta {
        align-items: flex-start;
        flex-direction: column;
        gap: 6px;
    }
}

@media (max-width: 430px) {
    .nav-links {
        grid-template-columns: 1fr;
    }

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

    .btn {
        width: 100%;
    }

    .profile-card,
    .about-portrait,
    .project-item,
    .award-card,
    .research-card {
        padding: 20px;
    }

    .about-portrait {
        padding: 0;
    }

    .reading-note-card {
        grid-template-columns: 44px minmax(0, 1fr);
        padding: 18px;
    }

    .reading-note-type {
        width: 44px;
        min-height: 56px;
        font-size: 11px;
    }
}

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