:root {
    --petrol: #264653;
    --ochre: #B67A2D;
    --cognac: #6B4F3A;
    --cream: #F5F1EA;
    --anthracite: #2F2F2F;
    --warm-gray: #6D6A66;
    --petrol-rgb: 38, 70, 83;
    --ochre-rgb: 182, 122, 45;
    --cognac-rgb: 107, 79, 58;
    --anthracite-rgb: 47, 47, 47;
    --background: var(--cream);
    --white: #fff;
    --surface: #fffaf2;
    --surface-soft: #eee4d7;
    --surface-deep: #ede3d6;
    --ink: var(--anthracite);
    --text: var(--anthracite);
    --muted: var(--warm-gray);
    --line: #ddd1c2;
    --accent: var(--petrol);
    --accent-strong: #1d3540;
    --accent-soft: #dbe6e8;
    --warm: var(--ochre);
    --shadow: 0 18px 50px rgba(47, 47, 47, 0.12);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(182, 122, 45, 0.16), transparent 34rem),
        radial-gradient(circle at 82% 18%, rgba(38, 70, 83, 0.1), transparent 28rem),
        linear-gradient(180deg, var(--surface) 0%, var(--background) 45%, var(--surface-deep) 100%);
    font-family: "Inter", Arial, sans-serif;
    line-height: 1.6;
}

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

a {
    color: inherit;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    width: min(1120px, calc(100% - 32px));
    margin: 18px auto 0;
    padding: 12px 14px;
    background: rgba(255, 250, 242, 0.9);
    border: 1px solid rgba(221, 209, 194, 0.94);
    border-radius: 8px;
    box-shadow: 0 12px 35px rgba(47, 47, 47, 0.08);
    backdrop-filter: blur(14px);
}

.brand,
.site-nav,
.profile-links,
.hero-actions,
.hero-tags,
.card-actions,
.contact-actions,
.tags {
    display: flex;
    align-items: center;
}

.brand {
    gap: 0.7rem;
    font-weight: 800;
    text-decoration: none;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    color: var(--white);
    background: var(--accent);
    border-radius: 8px;
    font-size: 0.85rem;
    letter-spacing: 0.04em;
}

.site-nav {
    gap: 0.25rem;
}

.site-nav a {
    padding: 0.65rem 0.72rem;
    color: var(--muted);
    border-radius: 8px;
    font-size: 0.92rem;
    font-weight: 700;
    text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav .language-link {
    color: var(--accent-strong);
    background: var(--accent-soft);
}

.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    padding: 9px;
    background: var(--surface-soft);
    border: 1px solid var(--line);
    border-radius: 8px;
}

.nav-toggle span:not(.sr-only) {
    display: block;
    height: 2px;
    margin: 5px 0;
    background: var(--ink);
}

.section {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
    padding: 82px 0;
}

.hero {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
    align-items: center;
    gap: 56px;
    min-height: auto;
    padding-top: 92px;
    padding-bottom: 96px;
    overflow: hidden;
}

.hero::after {
    content: "";
    position: absolute;
    right: 8%;
    bottom: 14%;
    width: 180px;
    height: 70px;
    border-top: 1px solid rgba(182, 122, 45, 0.38);
    border-radius: 50%;
    transform: rotate(-13deg);
    pointer-events: none;
}

.hero-copy,
.hero-photo-card {
    position: relative;
    z-index: 1;
}

.eyebrow {
    margin: 0 0 0.9rem;
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

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

h1 {
    max-width: 660px;
    margin-bottom: 1.2rem;
    font-size: clamp(1.75rem, 2.75vw, 2.58rem);
    line-height: 1.1;
    letter-spacing: 0;
}

h2 {
    margin-bottom: 1rem;
    font-size: clamp(2rem, 4vw, 3.45rem);
    line-height: 1.04;
    letter-spacing: 0;
}

h3 {
    margin-bottom: 0.6rem;
    font-size: 1.16rem;
    line-height: 1.25;
}

.hero-text {
    max-width: 680px;
    color: var(--muted);
    font-size: 1.14rem;
}

.hero-name {
    margin-bottom: 0.65rem;
    color: var(--ink);
    font-size: clamp(3rem, 5.4vw, 4.85rem);
    line-height: 1;
    font-weight: 900;
    white-space: nowrap;
}

.hero-role {
    margin-bottom: 0.8rem;
    color: var(--accent);
    font-size: clamp(1.22rem, 2vw, 1.5rem);
    line-height: 1.25;
    font-weight: 800;
}

.hero-tags,
.tags {
    flex-wrap: wrap;
    gap: 0.45rem;
}

.hero-tags {
    margin-top: 1.2rem;
}

.hero-tags span,
.tags span {
    padding: 0.34rem 0.58rem;
    color: var(--accent-strong);
    background: var(--accent-soft);
    border: 1px solid rgba(38, 70, 83, 0.08);
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 800;
}

.button {
    min-height: 46px;
    justify-content: center;
    padding: 0.78rem 1rem;
    border: 1px solid transparent;
    border-radius: 8px;
    font-weight: 800;
    text-decoration: none;
    transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button:hover,
.button:focus-visible {
    transform: translateY(-1px);
}

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

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

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

.button-secondary:hover,
.button-secondary:focus-visible {
    background: var(--surface-soft);
}

.hero-actions,
.contact-actions {
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 1.8rem;
}

.card-actions a,
.publication-item a {
    color: var(--accent-strong);
    font-weight: 800;
    text-decoration: none;
}

.hero-photo-card {
    display: grid;
    place-items: center;
    align-self: stretch;
    min-height: 0;
    padding: 0;
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;
}

.hero-photo {
    width: min(100%, 500px);
    aspect-ratio: 1;
    height: auto;
    min-height: 0;
    object-fit: cover;
    border-radius: 50%;
}

.hero-photo-caption {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-top: 1rem;
}

.hero-photo-caption strong {
    font-size: 1.1rem;
}

.hero-photo-caption span {
    color: var(--muted);
    font-weight: 700;
}

.focus-graph {
    width: 100%;
    height: 100%;
    min-height: 488px;
}

.graph-link {
    stroke: rgba(38, 70, 83, 0.22);
    stroke-width: 1.6;
    transition: stroke 180ms ease, stroke-width 180ms ease, opacity 180ms ease;
}

.graph-node {
    cursor: default;
    outline: none;
}

.graph-node circle {
    fill: var(--surface);
    stroke: var(--accent);
    stroke-width: 2.5;
    filter: drop-shadow(0 10px 18px rgba(47, 47, 47, 0.1));
    transform-box: fill-box;
    transform-origin: center;
    transition: fill 180ms ease, stroke 180ms ease, transform 180ms ease;
}

.graph-node text {
    fill: var(--ink);
    font-size: 0.82rem;
    font-weight: 900;
    text-anchor: middle;
    dominant-baseline: middle;
    pointer-events: none;
}

.node-main circle {
    fill: var(--accent);
    stroke: var(--accent-strong);
}

.node-main text {
    fill: var(--white);
    font-size: 0.92rem;
}

.node-primary circle {
    fill: var(--accent-soft);
    stroke-width: 3;
}

.node-support circle {
    stroke: var(--warm);
}

.node-research {
    opacity: 0.78;
}

.node-research circle {
    stroke: var(--cognac);
    stroke-dasharray: 4 4;
}

.node-easter circle {
    fill: var(--warm);
    stroke: var(--warm);
}

.node-easter text {
    fill: var(--muted);
    font-size: 0.72rem;
}

.graph-node:hover circle,
.graph-node:focus-visible circle,
.graph-node.is-active circle {
    transform: scale(1.06);
    fill: var(--white);
    stroke: var(--warm);
}

.node-main:hover circle,
.node-main:focus-visible circle,
.node-main.is-active circle {
    fill: var(--accent-strong);
}

.focus-graph.has-active .graph-link {
    opacity: 0.18;
}

.focus-graph.has-active .graph-link.is-active {
    opacity: 1;
    stroke: var(--warm);
    stroke-width: 2.8;
}

.stats-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    padding: 0;
    overflow: hidden;
    background: var(--line);
    border: 1px solid var(--line);
    border-radius: 8px;
}

.stats-strip article {
    position: relative;
    padding: 24px;
    background: rgba(255, 250, 242, 0.78);
}

.stats-strip article::before {
    content: "";
    display: block;
    width: 10px;
    height: 10px;
    margin-bottom: 12px;
    background: var(--warm);
    border: 2px solid var(--surface);
    border-radius: 50%;
    box-shadow: 20px 0 0 rgba(38, 70, 83, 0.24);
}

.stats-strip strong,
.stats-strip span {
    display: block;
}

.stats-strip strong {
    margin-bottom: 0.35rem;
    font-size: 1.05rem;
}

.stats-strip span,
.prose,
.section-heading p,
.work-card p,
.publication-item p,
.project-details dd,
.site-footer {
    color: var(--muted);
}

.split {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 56px;
}

.prose {
    font-size: 1.03rem;
}

.node-prose {
    position: relative;
    padding-left: 26px;
    border-left: 1px solid rgba(38, 70, 83, 0.18);
}

.node-prose p {
    position: relative;
}

.node-prose p::before {
    content: "";
    position: absolute;
    top: 0.45rem;
    left: -32px;
    width: 11px;
    height: 11px;
    background: var(--surface);
    border: 3px solid var(--accent);
    border-radius: 50%;
}

.journey-section {
    position: relative;
}

.journey-track {
    position: relative;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 18px;
    margin: 32px 0 0;
    padding: 0;
    list-style: none;
}

.journey-track::before {
    content: "";
    position: absolute;
    top: 31px;
    right: 7%;
    left: 7%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), var(--warm), transparent);
}

.journey-track li {
    position: relative;
    min-height: 210px;
    padding: 72px 16px 18px;
    background: rgba(255, 250, 242, 0.7);
    border: 1px solid var(--line);
    border-radius: 8px;
}

.journey-node {
    position: absolute;
    top: 23px;
    left: 18px;
    z-index: 1;
    width: 18px;
    height: 18px;
    background: var(--accent);
    border: 3px solid var(--surface);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(38, 70, 83, 0.12);
}

.tennis-node {
    background: var(--warm);
    box-shadow: 0 0 0 4px rgba(182, 122, 45, 0.18);
}

.journey-track strong {
    display: block;
    margin-bottom: 0.45rem;
}

.journey-track p {
    margin: 0;
    color: var(--muted);
    font-size: 0.93rem;
}

.stack-section {
    padding-top: 28px;
}

.section-heading {
    max-width: 760px;
    margin-bottom: 28px;
}

.stack-image {
    width: 100%;
    max-height: 560px;
    object-fit: contain;
    padding: 20px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
}

.number-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.number-grid article {
    min-height: 156px;
    padding: 20px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
}

.number-grid strong {
    display: block;
    margin-bottom: 0.7rem;
    color: var(--accent);
    font-size: clamp(1.6rem, 3vw, 2.5rem);
    line-height: 1;
}

.number-grid span {
    color: var(--muted);
    font-weight: 700;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.service-card {
    position: relative;
    min-height: 250px;
    padding: 24px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: 0 14px 36px rgba(47, 47, 47, 0.06);
}

.service-card::after {
    content: "";
    position: absolute;
    right: 20px;
    bottom: 22px;
    width: 90px;
    height: 48px;
    border-top: 1px solid rgba(182, 122, 45, 0.38);
    border-radius: 50%;
    transform: rotate(-15deg);
}

.service-node {
    display: block;
    width: 14px;
    height: 14px;
    margin-bottom: 18px;
    background: var(--warm);
    border: 3px solid var(--surface);
    border-radius: 50%;
    box-shadow: 22px 0 0 rgba(38, 70, 83, 0.22), 44px 12px 0 rgba(107, 79, 58, 0.18);
}

.service-card ul {
    display: grid;
    gap: 0.45rem;
    margin: 0;
    padding-left: 1.1rem;
    color: var(--muted);
    font-weight: 700;
}

.skills-section {
    position: relative;
}

.skills-cloud {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.skills-group {
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--line);
    background:
        radial-gradient(circle at top left, rgba(182, 122, 45, 0.14), transparent 36%),
        rgba(255, 250, 242, 0.76);
    box-shadow: 0 14px 36px rgba(47, 47, 47, 0.06);
}

.skills-group h3 {
    margin: 0 0 1.25rem;
    color: var(--ink);
    font-size: 1rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
}

.skill-tags span {
    display: inline-flex;
    align-items: center;
    padding: 0.55rem 0.85rem;
    border-radius: 999px;
    color: var(--accent-strong);
    background: var(--accent-soft);
    border: 1px solid rgba(38, 70, 83, 0.08);
    font-size: 0.88rem;
    font-weight: 800;
    transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.skill-tags span:hover {
    transform: translateY(-2px);
    background: var(--surface);
    border-color: rgba(182, 122, 45, 0.42);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.work-card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-height: 545px;
    padding: 22px;
    overflow: hidden;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: 0 14px 36px rgba(47, 47, 47, 0.07);
    transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.work-card::before {
    content: "";
    position: absolute;
    top: 20px;
    right: 20px;
    width: 72px;
    height: 42px;
    border-top: 1px solid rgba(38, 70, 83, 0.22);
    border-radius: 50%;
    transform: rotate(-18deg);
}

.work-card:hover,
.work-card:focus-within,
.publication-item:hover,
.publication-item:focus-within {
    border-color: rgba(182, 122, 45, 0.58);
    box-shadow: 0 18px 42px rgba(47, 47, 47, 0.1);
    transform: translateY(-2px);
}

.featured-card {
    background:
        linear-gradient(145deg, rgba(219, 230, 232, 0.55), transparent 45%),
        var(--surface);
}

.mini-graph {
    position: relative;
    width: 130px;
    height: 72px;
    margin-bottom: 12px;
}

.mini-graph::before,
.mini-graph::after {
    content: "";
    position: absolute;
    inset: 10px 18px auto 14px;
    height: 52px;
    border-top: 1px solid rgba(38, 70, 83, 0.34);
    border-bottom: 1px solid rgba(182, 122, 45, 0.34);
    transform: skewY(-14deg);
}

.mini-graph span {
    position: absolute;
    width: 11px;
    height: 11px;
    background: var(--accent);
    border: 2px solid var(--surface);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(38, 70, 83, 0.1);
}

.mini-graph span:nth-child(1) { top: 8px; left: 12px; }
.mini-graph span:nth-child(2) { top: 38px; left: 34px; background: var(--warm); }
.mini-graph span:nth-child(3) { top: 14px; left: 68px; }
.mini-graph span:nth-child(4) { top: 48px; left: 92px; background: var(--cognac); }
.mini-graph span:nth-child(5) { top: 26px; left: 112px; background: var(--warm); }

.project-details {
    display: grid;
    gap: 0.45rem;
    margin: 0;
}

.project-details dt {
    color: var(--cognac);
    font-weight: 900;
}

.project-details dd {
    margin: -0.3rem 0 0.45rem;
}

.card-meta {
    margin-bottom: 1.2rem;
    color: var(--warm);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.tags {
    margin-top: auto;
    padding-top: 1rem;
}

.publication-tags {
    margin: 0.6rem 0 0.8rem;
    padding-top: 0;
}

.publication-tags span {
    background: var(--surface-soft);
}

.card-actions {
    flex-wrap: wrap;
    gap: 0.7rem;
    margin-top: 1.4rem;
}

.publication-list {
    position: relative;
    display: grid;
    gap: 14px;
}

.publication-list::before {
    content: "";
    position: absolute;
    top: 22px;
    bottom: 22px;
    left: 39px;
    width: 1px;
    background: linear-gradient(var(--accent), var(--warm));
}

.publication-item {
    position: relative;
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 22px;
    padding: 20px;
    background: rgba(255, 250, 242, 0.82);
    border: 1px solid var(--line);
    border-radius: 8px;
    transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.publication-item::before {
    content: "";
    position: absolute;
    top: 22px;
    left: 34px;
    width: 11px;
    height: 11px;
    background: var(--warm);
    border: 2px solid var(--surface);
    border-radius: 50%;
}

.publication-item > span {
    color: var(--warm);
    font-weight: 900;
}

.publication-item p {
    margin-bottom: 0.5rem;
}

.publication-item a + a {
    margin-left: 0.9rem;
}

.contact-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    margin-bottom: 60px;
    padding: 34px;
    background:
        radial-gradient(circle at 92% 24%, rgba(182, 122, 45, 0.35), transparent 12rem),
        var(--accent);
    border-radius: 8px;
}

.contact-section h2 {
    max-width: 760px;
    margin-bottom: 0;
    color: var(--white);
}

.contact-section .eyebrow {
    color: var(--surface-soft);
}

.site-footer {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
    padding: 28px 0 42px;
    border-top: 1px solid var(--line);
    font-size: 0.9rem;
}

.site-footer p {
    margin: 0;
}

@media (max-width: 1020px) {
    .site-nav {
        gap: 0;
    }

    .site-nav a {
        padding-inline: 0.55rem;
    }
}

@media (max-width: 900px) {
    .nav-toggle {
        display: block;
    }

    .site-nav {
        position: absolute;
        top: calc(100% + 8px);
        right: 0;
        left: 0;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 10px;
        background: var(--surface);
        border: 1px solid var(--line);
        border-radius: 8px;
        box-shadow: var(--shadow);
    }

    .site-header.nav-open .site-nav {
        display: flex;
    }

    .site-nav a {
        padding: 0.85rem;
    }

    .hero,
    .split,
    .card-grid,
    .stats-strip,
    .number-grid,
    .service-grid,
    .skills-cloud {
        grid-template-columns: 1fr;
    }

    .hero {
        min-height: auto;
        padding-top: 50px;
    }

    .hero-photo-card {
        min-height: auto;
        padding: 0;
    }

    .hero-photo {
        height: auto;
        min-height: 0;
        max-height: 520px;
    }

    .journey-track {
        grid-template-columns: 1fr;
    }

    .journey-track::before {
        top: 24px;
        bottom: 24px;
        left: 26px;
        width: 2px;
        height: auto;
        background: linear-gradient(var(--accent), var(--warm));
    }

    .journey-track li {
        min-height: 0;
        padding: 22px 18px 22px 62px;
    }

    .journey-node {
        left: 18px;
    }

    .contact-section,
    .site-footer {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (max-width: 560px) {
    .site-header,
    .section,
    .site-footer {
        width: min(100% - 22px, 1120px);
    }

    .section {
        padding: 58px 0;
    }

    h1 {
        font-size: 1.85rem;
    }

    .hero-name {
        font-size: clamp(2.65rem, 12vw, 3.15rem);
    }

    .hero-tags span,
    .tags span {
        font-size: 0.74rem;
    }

    .publication-list::before,
    .publication-item::before {
        display: none;
    }

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

    .publication-item a {
        display: inline-block;
        margin-top: 0.35rem;
    }

    .publication-item a + a {
        margin-left: 0.65rem;
    }

    .contact-section {
        padding: 24px;
    }
}

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

    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.001ms !important;
    }

    .graph-node circle,
    .graph-link,
    .work-card,
    .publication-item,
    .button {
        transition: none !important;
    }
}

.skills-section {
    position: relative;
}

.section-heading {
    max-width: 760px;
    margin-bottom: 2.5rem;
}

.section-subtitle {
    margin-top: 0.75rem;
    color: var(--muted);
    font-size: 1.05rem;
    line-height: 1.6;
}

.skills-court {
    position: relative;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.skills-court::before {
    content: "";
    position: absolute;
    inset: -1rem;
    border-radius: 32px;
    background:
        linear-gradient(90deg, transparent 49.8%, rgba(var(--petrol-rgb), 0.08) 50%, transparent 50.2%),
        linear-gradient(0deg, transparent 49.8%, rgba(var(--petrol-rgb), 0.08) 50%, transparent 50.2%);
    pointer-events: none;
    z-index: 0;
}

.skills-group {
    position: relative;
    z-index: 1;
    padding: 1.5rem;
    border-radius: 28px;
    border: 1px solid rgba(var(--petrol-rgb), 0.14);
    background: rgba(255, 250, 242, 0.72);
    box-shadow: 0 18px 45px rgba(var(--petrol-rgb), 0.08);
}

.skills-group h3 {
    margin: 0 0 1.25rem;
    font-size: 1.05rem;
    color: var(--text);
}

.skill-balls {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-balls span {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.45rem;
    padding: 0.55rem 0.95rem;
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text);
    background:
        radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.85), transparent 26%),
        linear-gradient(145deg, var(--accent-soft), var(--surface-soft));
    border: 1px solid rgba(var(--petrol-rgb), 0.13);
    box-shadow:
        inset -6px -8px 14px rgba(var(--petrol-rgb), 0.08),
        inset 5px 5px 12px rgba(255, 255, 255, 0.75),
        0 8px 18px rgba(var(--petrol-rgb), 0.08);
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.skill-balls span::after {
    content: "";
    position: absolute;
    inset: 7px;
    border-radius: inherit;
    border-top: 1px solid rgba(255, 255, 255, 0.7);
    opacity: 0.7;
    pointer-events: none;
}

.skill-balls span:hover {
    transform: translateY(-3px) rotate(-1deg);
    box-shadow:
        inset -6px -8px 14px rgba(var(--petrol-rgb), 0.08),
        inset 5px 5px 12px rgba(255, 255, 255, 0.75),
        0 14px 26px rgba(var(--petrol-rgb), 0.14);
}

@media (max-width: 900px) {
    .skills-court {
        grid-template-columns: 1fr;
    }

    .skills-court::before {
        display: none;
    }
}

.publication-list {
    display: grid;
    gap: 1.25rem;
}

.publication-card {
    padding: 1.5rem;
    border-radius: 28px;
    border: 1px solid rgba(var(--petrol-rgb), 0.12);
    background: rgba(255, 250, 242, 0.72);
    box-shadow: 0 18px 45px rgba(var(--petrol-rgb), 0.07);
}

.publication-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 1rem;
}

.publication-meta span {
    display: inline-flex;
    padding: 0.35rem 0.65rem;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--muted);
    background: rgba(var(--petrol-rgb), 0.06);
    border: 1px solid rgba(var(--petrol-rgb), 0.08);
}

.publication-card h3 {
    margin: 0 0 0.75rem;
    font-size: 1.15rem;
    line-height: 1.35;
}

.publication-summary {
    margin: 0 0 1.1rem;
    color: var(--muted);
    line-height: 1.65;
}

.key-figures {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    margin: 1.25rem 0;
}

.key-figures div {
    padding: 1rem;
    border-radius: 20px;
    background: rgba(var(--petrol-rgb), 0.045);
    border: 1px solid rgba(var(--petrol-rgb), 0.08);
}

.key-figures strong {
    display: block;
    margin-bottom: 0.25rem;
    font-size: 1.4rem;
    letter-spacing: -0.03em;
    color: var(--text);
}

.key-figures span {
    color: var(--muted);
    font-size: 0.9rem;
    line-height: 1.4;
}

.publication-authors {
    margin: 0.75rem 0 1rem;
    color: var(--muted);
    font-size: 0.92rem;
}

.publication-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
}

.publication-links a {
    display: inline-flex;
    align-items: center;
    padding: 0.55rem 0.85rem;
    border-radius: 999px;
    font-size: 0.88rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--text);
    background: rgba(var(--petrol-rgb), 0.06);
    border: 1px solid rgba(var(--petrol-rgb), 0.10);
    transition: transform 0.18s ease, background 0.18s ease;
}

.publication-links a:hover {
    transform: translateY(-2px);
    background: rgba(var(--petrol-rgb), 0.10);
}

.publication-talks {
    background:
        radial-gradient(circle at top left, rgba(var(--petrol-rgb), 0.08), transparent 36%),
        rgba(255, 250, 242, 0.55);
}

@media (max-width: 700px) {
    .key-figures {
        grid-template-columns: 1fr;
    }
}


.timeline-section {
    position: relative;
}

.timeline {
    position: relative;
    max-width: 760px;
    margin-top: 2.5rem;
    padding-left: 1.5rem;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 0.35rem;
    top: 0.35rem;
    bottom: 0.35rem;
    width: 1px;
    background: linear-gradient(
        to bottom,
        rgba(255, 255, 255, 0.15),
        rgba(255, 255, 255, 0.45),
        rgba(255, 255, 255, 0.08)
    );
}

.timeline-item {
    position: relative;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1rem;
    padding: 0 0 1.9rem;
}

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

.timeline-dot {
    position: relative;
    z-index: 1;
    width: 0.75rem;
    height: 0.75rem;
    margin-top: 0.35rem;
    border-radius: 999px;
    background: var(--accent, var(--accent));
    box-shadow:
        0 0 0 6px rgba(143, 211, 255, 0.08),
        0 0 22px rgba(143, 211, 255, 0.35);
}

.timeline-content {
    padding: 1rem 1.15rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 1.1rem;
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.025));
    backdrop-filter: blur(12px);
    transition:
        transform 180ms ease,
        border-color 180ms ease,
        background 180ms ease;
}

.timeline-content:hover {
    transform: translateY(-2px);
    border-color: rgba(143, 211, 255, 0.28);
    background:
        linear-gradient(135deg, rgba(143, 211, 255, 0.09), rgba(255, 255, 255, 0.025));
}

.timeline-date {
    display: inline-flex;
    margin-bottom: 0.35rem;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent, var(--accent));
}

.timeline-content h3 {
    margin: 0;
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    line-height: 1.2;
}

.timeline-content p {
    margin: 0.45rem 0 0;
    max-width: 54ch;
    color: var(--muted, rgba(255, 255, 255, 0.68));
    line-height: 1.55;
}

@media (max-width: 700px) {
    .timeline {
        padding-left: 1rem;
        margin-top: 2rem;
    }

    .timeline::before {
        left: 0.2rem;
    }

    .timeline-item {
        gap: 0.8rem;
    }

    .timeline-content {
        padding: 0.9rem 1rem;
    }
}

/* Cohesive graph identity refresh */
.site-nav a {
    position: relative;
    transition: color 180ms ease, background 180ms ease;
}

.site-nav a::after {
    content: "";
    position: absolute;
    right: 0.72rem;
    bottom: 0.36rem;
    left: 0.72rem;
    height: 2px;
    background: var(--warm);
    border-radius: 999px;
    opacity: 0;
    transform: scaleX(0.35);
    transform-origin: center;
    transition: opacity 180ms ease, transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a.is-active::after {
    opacity: 1;
    transform: scaleX(1);
}

.site-nav a.is-active {
    color: var(--accent);
    background: rgba(var(--ochre-rgb), 0.12);
}

.site-nav .language-link::after {
    display: none;
}

.button-primary {
    background: var(--warm);
    border-color: var(--warm);
}

.button-primary:hover,
.button-primary:focus-visible {
    background: var(--cognac);
    border-color: var(--cognac);
}

.skills-group,
.work-card,
.publication-card {
    background:
        radial-gradient(circle at 16px 16px, rgba(var(--petrol-rgb), 0.09) 0 2px, transparent 2.5px),
        radial-gradient(circle at 62px 48px, rgba(var(--ochre-rgb), 0.08) 0 2px, transparent 2.5px),
        linear-gradient(145deg, rgba(var(--petrol-rgb), 0.035), transparent 34%),
        rgba(255, 250, 242, 0.82);
    background-size: auto, auto, auto, auto;
}

.journey-graph-section {
    position: relative;
}

.journey-graph {
    position: relative;
    display: grid;
    grid-template-columns: 300px minmax(0, 1fr) minmax(0, 1fr);
    grid-template-rows: auto auto auto;
    column-gap: 34px;
    row-gap: 36px;
    width: 100%;
    max-width: none;
    margin-top: 2.6rem;
    padding: 26px 0 12px;
}

.journey-graph::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 300px;
    border: 1px solid rgba(var(--petrol-rgb), 0.09);
    border-radius: 8px;
    background:
        radial-gradient(circle at 50% 8%, rgba(var(--ochre-rgb), 0.12), transparent 24%),
        radial-gradient(circle at 50% 55%, rgba(var(--petrol-rgb), 0.08), transparent 28%),
        linear-gradient(180deg, rgba(255, 250, 242, 0.42), rgba(255, 250, 242, 0.08));
    pointer-events: none;
}

.journey-edges {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 0;
    width: 300px;
    height: 100%;
    overflow: visible;
    pointer-events: none;
}

.journey-edge {
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    vector-effect: non-scaling-stroke;
    transition: stroke 180ms ease, stroke-width 180ms ease, opacity 180ms ease;
}

.main-edge {
    stroke: rgba(var(--petrol-rgb), 0.5);
    stroke-width: 1.75;
}

.side-edge {
    stroke: rgba(var(--ochre-rgb), 0.54);
    stroke-width: 1.55;
}

.journey-node-card {
    position: relative;
    z-index: 1;
    min-height: 150px;
    padding: 19px 20px;
    border: 1px solid rgba(var(--petrol-rgb), 0.13);
    border-radius: 8px;
    background: rgba(255, 250, 242, 0.88);
    box-shadow: 0 14px 34px rgba(var(--anthracite-rgb), 0.065);
    transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.journey-node-card:hover,
.journey-node-card:focus-within {
    transform: translateY(-2px);
    border-color: rgba(var(--ochre-rgb), 0.58);
    box-shadow: 0 18px 42px rgba(var(--anthracite-rgb), 0.1);
}

.journey-root {
    grid-column: 2;
    grid-row: 1;
}

.journey-degree {
    grid-column: 3;
    grid-row: 1;
}

.journey-phd {
    grid-column: 2 / 4;
    grid-row: 2;
    width: min(620px, 100%);
    justify-self: center;
}

.journey-current {
    grid-column: 2 / 4;
    grid-row: 3;
    width: min(620px, 100%);
    justify-self: center;
}

.journey-node {
    position: absolute;
    display: block;
    z-index: 2;
    width: 20px;
    height: 20px;
    border: 4px solid var(--surface);
    border-radius: 999px;
    background: var(--accent);
    box-shadow:
        0 0 0 1px rgba(var(--petrol-rgb), 0.18),
        0 0 0 8px rgba(var(--petrol-rgb), 0.08),
        0 12px 24px rgba(var(--anthracite-rgb), 0.1);
    transform: translate(-50%, -50%);
    transition: transform 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.journey-node-engineer {
    top: 24%;
    left: 78px;
}

.journey-node-origin {
    top: 8%;
    left: 150px;
    width: 15px;
    height: 15px;
    background: var(--surface);
    border-color: var(--accent);
    box-shadow:
        0 0 0 1px rgba(var(--petrol-rgb), 0.18),
        0 0 0 7px rgba(var(--petrol-rgb), 0.07);
}

.journey-node-degree {
    top: 24%;
    left: 222px;
    background: var(--warm);
    box-shadow:
        0 0 0 1px rgba(var(--ochre-rgb), 0.22),
        0 0 0 8px rgba(var(--ochre-rgb), 0.1),
        0 12px 24px rgba(var(--anthracite-rgb), 0.1);
}

.journey-node-phd {
    top: 55%;
    left: 150px;
    background: var(--cognac);
    box-shadow:
        0 0 0 1px rgba(var(--cognac-rgb), 0.2),
        0 0 0 8px rgba(var(--cognac-rgb), 0.09),
        0 12px 24px rgba(var(--anthracite-rgb), 0.1);
}

.journey-node-current {
    top: 90%;
    left: 150px;
}

.journey-node-card:hover ~ .journey-node,
.journey-node-card:focus-within ~ .journey-node {
    transform: translate(-50%, -50%) scale(1.12);
}

.journey-date {
    display: inline-flex;
    margin-bottom: 0.34rem;
    color: var(--warm);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.journey-content h3 {
    margin: 0;
}

.journey-content p {
    margin: 0.45rem 0 0;
    color: var(--muted);
}

.publication-list {
    position: relative;
    isolation: isolate;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
}

.publication-list::before {
    display: none;
}

.publication-card {
    position: relative;
    z-index: 1;
    overflow: hidden;
    padding: 1.45rem;
    border: 1px solid rgba(var(--petrol-rgb), 0.13);
    border-radius: 8px;
    box-shadow: 0 14px 34px rgba(var(--anthracite-rgb), 0.065);
    transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.publication-card::before {
    content: "";
    position: absolute;
    top: 18px;
    right: 18px;
    width: 82px;
    height: 46px;
    background:
        radial-gradient(circle at 9px 10px, rgba(var(--petrol-rgb), 0.42) 0 3px, transparent 3.5px),
        radial-gradient(circle at 44px 20px, rgba(var(--ochre-rgb), 0.42) 0 3px, transparent 3.5px),
        radial-gradient(circle at 74px 36px, rgba(var(--cognac-rgb), 0.28) 0 3px, transparent 3.5px),
        linear-gradient(20deg, transparent 10px, rgba(var(--petrol-rgb), 0.2) 10px 45px, transparent 45px),
        linear-gradient(25deg, transparent 45px, rgba(var(--ochre-rgb), 0.2) 45px 78px, transparent 78px);
    opacity: 0.34;
    pointer-events: none;
}

.publication-card:hover,
.publication-card:focus-within {
    transform: translateY(-2px);
    border-color: rgba(var(--ochre-rgb), 0.58);
    box-shadow: 0 18px 42px rgba(var(--anthracite-rgb), 0.1);
}

.publication-card h3,
.publication-summary,
.publication-authors,
.key-figures,
.publication-links,
.publication-meta {
    position: relative;
    z-index: 1;
}

.publication-meta span,
.publication-links a {
    color: var(--accent);
    background: rgba(var(--petrol-rgb), 0.07);
    border-color: rgba(var(--petrol-rgb), 0.12);
    border-radius: 999px;
}

.publication-links a:hover,
.publication-links a:focus-visible {
    color: var(--surface);
    background: var(--warm);
    border-color: var(--warm);
}

.card-actions a {
    display: inline-flex;
    align-items: center;
    padding: 0.55rem 0.85rem;
    border: 1px solid rgba(var(--petrol-rgb), 0.12);
    border-radius: 999px;
    color: var(--accent);
    background: rgba(var(--petrol-rgb), 0.07);
    font-size: 0.88rem;
    font-weight: 700;
    text-decoration: none;
    transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.card-actions a:hover,
.card-actions a:focus-visible {
    color: var(--surface);
    background: var(--warm);
    border-color: var(--warm);
    transform: translateY(-2px);
}

.key-figures div {
    border-radius: 8px;
    background: rgba(var(--petrol-rgb), 0.055);
    border-color: rgba(var(--petrol-rgb), 0.1);
}

.key-figures strong {
    color: var(--warm);
    letter-spacing: 0;
}

.work-card::before {
    background:
        radial-gradient(circle at 9px 10px, rgba(var(--petrol-rgb), 0.42) 0 3px, transparent 3.5px),
        radial-gradient(circle at 42px 24px, rgba(var(--ochre-rgb), 0.42) 0 3px, transparent 3.5px),
        radial-gradient(circle at 68px 38px, rgba(var(--cognac-rgb), 0.28) 0 3px, transparent 3.5px),
        linear-gradient(22deg, transparent 9px, rgba(var(--petrol-rgb), 0.2) 9px 43px, transparent 43px),
        linear-gradient(22deg, transparent 43px, rgba(var(--ochre-rgb), 0.2) 43px 70px, transparent 70px);
    border-top: 0;
    opacity: 0.46;
}

.site-footer {
    position: relative;
}

.site-footer::after {
    content: "";
    width: 118px;
    height: 38px;
    background:
        radial-gradient(circle at 8px 28px, rgba(var(--petrol-rgb), 0.42) 0 3px, transparent 3.5px),
        radial-gradient(circle at 48px 10px, rgba(var(--ochre-rgb), 0.38) 0 3px, transparent 3.5px),
        radial-gradient(circle at 90px 25px, rgba(var(--cognac-rgb), 0.28) 0 3px, transparent 3.5px),
        linear-gradient(153deg, transparent 9px, rgba(var(--petrol-rgb), 0.2) 9px 48px, transparent 48px),
        linear-gradient(28deg, transparent 49px, rgba(var(--ochre-rgb), 0.18) 49px 90px, transparent 90px);
    opacity: 0.42;
}

@media (max-width: 900px) {
    .journey-graph {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        gap: 16px;
        padding-left: 28px;
    }

    .journey-edges {
        display: none;
    }

    .journey-node {
        display: none;
    }

    .journey-graph::before {
        content: "";
        position: absolute;
        top: 18px;
        bottom: 18px;
        left: 7px;
        width: 1px;
        background: linear-gradient(var(--accent), var(--warm), var(--cognac), var(--accent));
        opacity: 0.42;
    }

    .journey-root,
    .journey-degree,
    .journey-phd,
    .journey-current {
        grid-column: 1;
        grid-row: auto;
        width: auto;
        justify-self: stretch;
    }

    .publication-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 560px) {
    .journey-graph {
        padding-left: 18px;
    }

    .journey-node-card,
    .publication-card {
        padding: 1.05rem;
    }

    .publication-card::before {
        opacity: 0.2;
    }
}