:root {
    color-scheme: light;
    --ink: #202020;
    --ink-soft: #5b5b5b;
    --paper: #f5f5f5;
    --surface: #ffffff;
    --surface-muted: #e9e9e9;
    --line: #d0d0d0;
    --accent: #4a4a4a;
    --accent-strong: #252525;
    --footer: #1c1c1c;
    --footer-ink: #f5f5f5;
    --focus: #202020;
    --shadow: 0 22px 60px rgba(0, 0, 0, 0.12);
    --radius: 1.25rem;
    --shell: min(72rem, calc(100% - 2.5rem));
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-width: 20rem;
    background: var(--paper);
    color: var(--ink);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 1rem;
    line-height: 1.65;
    text-rendering: optimizeLegibility;
}

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

a {
    color: inherit;
}

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

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
    outline: 0.2rem solid var(--focus);
    outline-offset: 0.2rem;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1,
h2,
h3 {
    font-weight: 500;
    letter-spacing: -0.025em;
    line-height: 1.1;
}

h1 {
    margin-bottom: 1.25rem;
    font-size: clamp(3.6rem, 11vw, 7.5rem);
}

h2 {
    margin-bottom: 1.5rem;
    font-size: clamp(2rem, 5vw, 3.6rem);
}

h3 {
    margin-bottom: 0.8rem;
    font-size: 1.35rem;
}

.shell {
    width: var(--shell);
    margin-inline: auto;
}

.skip-link {
    position: fixed;
    z-index: 100;
    top: 0.75rem;
    left: 0.75rem;
    padding: 0.7rem 1rem;
    border-radius: 0.5rem;
    background: var(--ink);
    color: #fff;
    font-weight: 700;
    text-decoration: none;
    transform: translateY(-200%);
}

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

site-header,
site-footer {
    display: block;
}

site-header:not(:defined) {
    min-height: 6rem;
}

.site-header {
    position: relative;
    z-index: 10;
    border-bottom: 1px solid var(--line);
    background: rgba(245, 245, 245, 0.96);
}

.header-inner {
    display: flex;
    min-height: 6rem;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.85rem;
    color: var(--ink);
    font-weight: 550;
    text-decoration: none;
}

.brand img {
    width: 2.8rem;
    height: 2.8rem;
    border: 2px solid var(--surface);
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 0 0 1px var(--line);
}

.primary-nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.4rem;
}

.primary-nav a {
    padding: 0.65rem 0.85rem;
    border-radius: 999px;
    color: var(--ink-soft);
    font-size: 0.94rem;
    font-weight: 500;
    text-decoration: none;
}

.primary-nav a:hover {
    background: var(--surface-muted);
    color: var(--ink);
}

.primary-nav .nav-contact {
    margin-left: 0.35rem;
    background: var(--ink);
    color: #fff;
}

.primary-nav .nav-contact:hover {
    background: var(--accent);
    color: #fff;
}

.hero {
    padding-block: clamp(3.5rem, 8vw, 7.5rem);
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(18rem, 0.75fr);
    align-items: center;
    gap: clamp(2.5rem, 7vw, 6rem);
}

.hero-copy {
    min-width: 0;
}

.eyebrow {
    margin-bottom: 1rem;
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 650;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.hero-lede {
    max-width: 42rem;
    margin-bottom: 2rem;
    color: var(--ink-soft);
    font-size: clamp(1.15rem, 2.2vw, 1.5rem);
    line-height: 1.55;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.button {
    display: inline-flex;
    min-height: 3rem;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.15rem;
    border: 1px solid transparent;
    border-radius: 999px;
    font-weight: 600;
    text-decoration: none;
}

.button-primary {
    background: var(--accent);
    color: #fff;
}

.button-primary:hover {
    background: var(--accent-strong);
}

.button-secondary {
    border-color: var(--line);
    background: var(--surface);
}

.button-secondary:hover {
    border-color: var(--ink-soft);
}

.portrait-frame {
    aspect-ratio: 1;
    overflow: hidden;
    border-radius: 50%;
    background: var(--surface-muted);
    box-shadow: var(--shadow);
}

.portrait-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.section {
    padding-block: clamp(4rem, 8vw, 7rem);
    border-top: 1px solid var(--line);
}

.section-grid {
    display: grid;
    grid-template-columns: minmax(15rem, 0.8fr) minmax(0, 1.2fr);
    gap: clamp(2.5rem, 8vw, 7rem);
}

.section-grid h2,
.section-heading h2 {
    max-width: 14ch;
}

.prose {
    max-width: 45rem;
    color: var(--ink-soft);
    font-size: 1.08rem;
}

.prose p {
    margin-bottom: 1.35rem;
}

.prose p:last-child {
    margin-bottom: 0;
}

.section-muted {
    background: var(--surface-muted);
}

.section-heading {
    margin-bottom: 2.5rem;
}

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

.focus-card {
    min-width: 0;
    padding: clamp(1.5rem, 4vw, 2.4rem);
    border: 1px solid rgba(0, 0, 0, 0.14);
    border-radius: var(--radius);
    background: var(--surface);
}

.focus-card p:last-child {
    margin-bottom: 0;
    color: var(--ink-soft);
}

.card-number {
    margin-bottom: 2.5rem;
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 650;
    letter-spacing: 0.13em;
}

.publication-list {
    display: grid;
    gap: 1rem;
}

.publication-card {
    display: grid;
    grid-template-columns: 5rem minmax(0, 1fr);
    gap: clamp(1.25rem, 4vw, 3rem);
    padding: clamp(1.5rem, 4vw, 2.4rem);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
}

.publication-year {
    margin: 0;
    color: var(--accent);
    font-size: 0.82rem;
    font-weight: 650;
    letter-spacing: 0.1em;
}

.publication-card h3 {
    max-width: 48rem;
    margin-bottom: 0.8rem;
}

.publication-card h3 a {
    text-decoration-color: var(--line);
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.18em;
}

.publication-card h3 a:hover {
    text-decoration-color: var(--ink);
}

.publication-details {
    margin-bottom: 1rem;
    color: var(--ink-soft);
}

.orcid-link {
    font-weight: 600;
    text-underline-offset: 0.2em;
}

.orcid-callout {
    margin: 1.5rem 0 0;
    color: var(--ink-soft);
}

.site-footer {
    padding-block: clamp(4rem, 9vw, 7rem) 2rem;
    background: var(--footer);
    color: var(--footer-ink);
}

.footer-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 3rem;
    align-items: end;
}

.footer-copy h2 {
    max-width: 12ch;
    margin-bottom: 1rem;
}

.footer-copy > p:not(.eyebrow) {
    max-width: 38rem;
    color: rgba(245, 245, 245, 0.76);
}

.site-footer .eyebrow {
    color: #c7c7c7;
}

.contact-links {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.45rem;
}

.contact-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.55rem 0.7rem;
    border-radius: 0.65rem;
    font-weight: 600;
    text-decoration: none;
}

.contact-links a:hover {
    background: rgba(255, 255, 255, 0.1);
}

.social-icon {
    width: 1.25rem;
    height: 1.25rem;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: clamp(3.5rem, 8vw, 6rem);
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.16);
    color: rgba(245, 245, 245, 0.62);
    font-size: 0.88rem;
}

.footer-bottom p {
    margin: 0;
}

@media (max-width: 50rem) {
    :root {
        --shell: min(100% - 2rem, 44rem);
    }

    .header-inner {
        min-height: auto;
        padding-block: 1rem;
        align-items: flex-start;
        flex-direction: column;
        gap: 0.8rem;
    }

    .primary-nav {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
    }

    .primary-nav .nav-contact {
        margin-left: 0;
    }

    .hero-grid,
    .section-grid,
    .footer-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .portrait-frame {
        width: min(22rem, 88vw);
        justify-self: center;
        border-radius: 50%;
    }

    .focus-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .publication-card {
        grid-template-columns: minmax(0, 1fr);
        gap: 0.65rem;
    }

    .footer-grid {
        align-items: start;
    }

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

@media (max-width: 30rem) {
    h1 {
        font-size: clamp(3.2rem, 18vw, 4.6rem);
    }

    .brand img {
        width: 2.45rem;
        height: 2.45rem;
    }

    .primary-nav {
        gap: 0.2rem;
    }

    .primary-nav a {
        padding-inline: 0.65rem;
        font-size: 0.88rem;
    }

    .hero-actions,
    .button {
        width: 100%;
    }
}

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