@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=Literata:ital,opsz,wght@0,7..72,400;0,7..72,600;0,7..72,700;1,7..72,400&display=swap');

:root {
    --surface: #ffffff;
    --surface-alt: #f4f7fb;
    --surface-panel: #0f172a;
    --surface-panel-soft: #1e293b;
    --ink: #0b1220;
    --ink-muted: #5b6475;
    --ink-faint: #94a3b8;
    --accent: #0f766e;
    --accent-strong: #115e59;
    --accent-soft: #ccfbf1;
    --line: #e2e8f0;
    --line-strong: #cbd5e1;
    --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
    --radius-sm: 4px;
    --radius-md: 10px;
    --radius-lg: 18px;
    --panel-width: 320px;
    --topbar-height: 64px;
    --ease: 0.22s ease;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--topbar-height) + 24px);
}

body {
    font-family: 'DM Sans', system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.65;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(15, 118, 110, 0.08), transparent 28%),
        linear-gradient(180deg, #f8fafc 0%, #eef2f7 100%);
    min-height: 100vh;
}

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

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

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

::selection {
    background: var(--accent-soft);
    color: var(--accent-strong);
}

.shell {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px 64px;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 30;
    height: var(--topbar-height);
    backdrop-filter: blur(14px);
    background: rgba(248, 250, 252, 0.88);
    border-bottom: 1px solid rgba(226, 232, 240, 0.9);
}

.topbar-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.brand-mark {
    font-family: 'Literata', Georgia, serif;
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--ink);
    white-space: nowrap;
}

.brand-mark span {
    color: var(--accent);
}

.topnav {
    display: flex;
    align-items: center;
    gap: 6px;
    overflow-x: auto;
    scrollbar-width: none;
}

.topnav::-webkit-scrollbar {
    display: none;
}

.topnav a {
    color: var(--ink-muted);
    font-size: 0.92rem;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 999px;
    white-space: nowrap;
    transition: background var(--ease), color var(--ease);
}

.topnav a:hover,
.topnav a.is-active {
    color: var(--accent-strong);
    background: rgba(15, 118, 110, 0.1);
}

.menu-toggle {
    display: none;
    border: 1px solid var(--line);
    background: var(--surface);
    color: var(--ink);
    border-radius: var(--radius-sm);
    width: 42px;
    height: 42px;
    cursor: pointer;
}

.layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) var(--panel-width);
    gap: 28px;
    align-items: start;
    padding-top: 28px;
}

.content {
    min-width: 0;
}

.panel {
    position: sticky;
    top: calc(var(--topbar-height) + 24px);
    background: linear-gradient(180deg, var(--surface-panel) 0%, #111827 100%);
    color: #e2e8f0;
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    box-shadow: var(--shadow);
}

.panel-photo {
    width: 112px;
    height: 112px;
    object-fit: cover;
    border-radius: var(--radius-md);
    border: 3px solid rgba(255, 255, 255, 0.12);
    margin-bottom: 18px;
}

.panel-name {
    font-family: 'Literata', Georgia, serif;
    font-size: 1.55rem;
    line-height: 1.2;
    margin-bottom: 6px;
}

.panel-role,
.panel-org {
    color: #cbd5e1;
    font-size: 0.95rem;
}

.panel-org {
    margin-bottom: 16px;
}

.panel-tagline {
    font-size: 0.9rem;
    color: #94a3b8;
    padding: 12px 14px;
    background: rgba(255, 255, 255, 0.05);
    border-left: 3px solid var(--accent);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin-bottom: 18px;
}

.panel-tagline em {
    font-style: normal;
    color: #5eead4;
    font-weight: 600;
}

.panel-links {
    display: grid;
    gap: 10px;
    margin-bottom: 22px;
}

.action-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 11px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: #f8fafc;
    font-weight: 600;
    font-size: 0.92rem;
    transition: transform var(--ease), border-color var(--ease), background var(--ease);
}

.action-link:hover {
    color: #fff;
    border-color: rgba(94, 234, 212, 0.45);
    background: rgba(255, 255, 255, 0.06);
    transform: translateX(3px);
}

.action-link.secondary {
    background: transparent;
    font-weight: 500;
}

.social-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 22px;
}

.social-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 10px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.07);
    color: #cbd5e1;
    font-size: 0.82rem;
}

.social-chip:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.12);
}

.panel-edu-title {
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #64748b;
    margin-bottom: 10px;
}

.edu-item {
    padding: 10px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.edu-item:first-of-type {
    border-top: none;
    padding-top: 0;
}

.edu-item strong {
    display: block;
    color: #f1f5f9;
    font-size: 0.92rem;
}

.edu-item span,
.edu-item time {
    display: block;
    color: #94a3b8;
    font-size: 0.84rem;
}

.block {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 28px 28px 24px;
    margin-bottom: 22px;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7);
}

.block-head {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.block-head h2 {
    font-family: 'Literata', Georgia, serif;
    font-size: 1.45rem;
    letter-spacing: -0.02em;
}

.block-head::before {
    content: '';
    width: 4px;
    height: 28px;
    border-radius: 999px;
    background: linear-gradient(180deg, var(--accent), #14b8a6);
    flex-shrink: 0;
}

.lead {
    font-size: 1.02rem;
    color: var(--ink-muted);
    max-width: 68ch;
}

.lead strong {
    color: var(--ink);
}

.meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 14px 22px;
    margin-top: 18px;
    color: var(--ink-muted);
    font-size: 0.92rem;
}

.meta-row i {
    color: var(--accent);
    margin-right: 6px;
}

.availability {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 18px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    background: var(--accent-soft);
    color: var(--accent-strong);
    font-size: 0.88rem;
    font-weight: 600;
}

.availability::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #14b8a6;
    box-shadow: 0 0 0 4px rgba(20, 184, 166, 0.18);
}

.news-feed {
    display: grid;
    gap: 0;
}

.news-item {
    display: grid;
    grid-template-columns: 92px 1fr;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px dashed var(--line);
}

.news-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.news-item time {
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--accent-strong);
    padding-top: 2px;
}

.news-item p {
    color: var(--ink-muted);
}

.experience-list {
    display: grid;
    gap: 14px;
}

.experience-card {
    padding: 18px 18px 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface-alt);
}

.experience-card header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 8px 16px;
    margin-bottom: 8px;
}

.experience-card h3 {
    font-size: 1rem;
}

.experience-card time {
    font-size: 0.84rem;
    color: var(--ink-faint);
    font-weight: 600;
}

.experience-card .org {
    color: var(--accent-strong);
    font-weight: 600;
    margin-bottom: 4px;
}

.experience-card p {
    color: var(--ink-muted);
    font-size: 0.94rem;
}

.venue-switch {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 18px;
    padding: 6px;
    background: var(--surface-alt);
    border: 1px solid var(--line);
    border-radius: 999px;
}

.venue-switch button {
    border: none;
    background: transparent;
    color: var(--ink-muted);
    font: inherit;
    font-size: 0.86rem;
    font-weight: 600;
    padding: 8px 14px;
    border-radius: 999px;
    cursor: pointer;
    transition: background var(--ease), color var(--ease);
}

.venue-switch button.is-active {
    background: var(--surface);
    color: var(--accent-strong);
    box-shadow: 0 1px 4px rgba(15, 23, 42, 0.08);
}

.subsection-label {
    font-size: 0.82rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-faint);
    margin: 8px 0 14px;
}

.paper-list {
    display: grid;
    gap: 14px;
}

.paper-entry {
    display: grid;
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 18px;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface);
    transition: border-color var(--ease), transform var(--ease);
}

.paper-entry:hover {
    border-color: var(--line-strong);
    transform: translateY(-1px);
}

.paper-thumb {
    width: 128px;
    height: 84px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    background: var(--surface-alt);
}

.paper-body h3 {
    font-size: 1rem;
    line-height: 1.45;
    margin-bottom: 8px;
}

.paper-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 8px;
}

.venue-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    background: #ecfeff;
    color: #0e7490;
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.paper-authors {
    color: var(--ink-muted);
    font-size: 0.92rem;
    margin-bottom: 10px;
}

.paper-authors .self {
    color: var(--ink);
    font-weight: 700;
    text-decoration: underline;
    text-decoration-color: var(--accent-soft);
    text-underline-offset: 3px;
}

.paper-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.paper-actions a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--line);
    color: var(--ink-muted);
    font-size: 0.82rem;
    font-weight: 600;
}

.paper-actions a:hover {
    color: var(--accent-strong);
    border-color: rgba(15, 118, 110, 0.35);
    background: rgba(15, 118, 110, 0.05);
}

.service-columns {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.service-card {
    padding: 16px;
    border-radius: var(--radius-md);
    background: var(--surface-alt);
    border: 1px solid var(--line);
}

.service-card h3 {
    font-size: 0.92rem;
    margin-bottom: 10px;
    color: var(--accent-strong);
}

.service-card li,
.service-card .row {
    color: var(--ink-muted);
    font-size: 0.92rem;
}

.service-card ul {
    list-style: none;
    display: grid;
    gap: 8px;
}

.service-card .row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 8px 0;
    border-bottom: 1px solid var(--line);
}

.service-card .row:last-child {
    border-bottom: none;
}

.awards-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.award-card {
    padding: 18px;
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
}

.award-card .emoji {
    font-size: 1.3rem;
    margin-bottom: 8px;
}

.award-card strong {
    display: block;
    margin-bottom: 4px;
}

.award-card span {
    color: var(--ink-muted);
    font-size: 0.9rem;
}

.site-footer {
    margin-top: 8px;
    padding: 22px 8px 0;
    color: var(--ink-faint);
    font-size: 0.88rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
}

.site-footer a {
    color: var(--ink-muted);
}

.reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.floating-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 46px;
    height: 46px;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: var(--surface);
    color: var(--accent-strong);
    box-shadow: var(--shadow);
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--ease), transform var(--ease);
}

.floating-top.is-visible {
    opacity: 1;
    pointer-events: auto;
}

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

@media (max-width: 980px) {
    .layout {
        grid-template-columns: 1fr;
    }

    .panel {
        position: static;
        order: -1;
    }

    .service-columns {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .topnav {
        display: none;
        position: absolute;
        top: calc(var(--topbar-height) - 1px);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        padding: 12px 24px 16px;
        background: rgba(248, 250, 252, 0.98);
        border-bottom: 1px solid var(--line);
    }

    .topnav.is-open {
        display: flex;
    }

    .menu-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .paper-entry {
        grid-template-columns: 1fr;
    }

    .paper-thumb {
        width: 100%;
        height: 160px;
    }

    .news-item {
        grid-template-columns: 1fr;
        gap: 6px;
    }

    .awards-grid {
        grid-template-columns: 1fr;
    }

    .block {
        padding: 22px 18px 18px;
    }
}