:root {
    --bg: #0c0d10;
    --surface: #14161b;
    --text: #f5f2ea;
    --muted: #a7a29a;
    --border: #272a31;
    --accent: #8ed0b4;
    --accent-strong: #cfe9dc;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Inter", "Segoe UI", Roboto, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background: radial-gradient(circle at top left, rgba(142, 208, 180, 0.12), transparent 32%);
    pointer-events: none;
    z-index: 0;
}

.background-canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    z-index: 0;
    pointer-events: none;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
}

.site-header {
    padding: 24px 24px 0;
    position: relative;
    z-index: 1;
}

.top-nav {
    max-width: 1100px;
    margin: 0 auto;
    padding: 12px 0 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
}

.top-nav a {
    color: var(--text);
}

.brand {
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    gap: 20px;
    color: var(--muted);
}

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

.hero {
    max-width: 1100px;
    margin: 0 auto;
    padding: 64px 0 48px;
    display: grid;
    grid-template-columns: 1.6fr 0.9fr;
    gap: 28px;
    align-items: start;
    position: relative;
    z-index: 1;
}

.eyebrow {
    margin: 0 0 12px;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
}

.hero h1 {
    margin: 0 0 16px;
    font-size: clamp(2rem, 4vw, 3.2rem);
    line-height: 1.05;
}

.hero-copy p {
    margin: 0;
    max-width: 620px;
    color: var(--muted);
    font-size: 1.03rem;
}

.hero-copy .inline-link {
    color: var(--accent);
    font-weight: 600;
    text-decoration: underline;
    text-decoration-color: rgba(142, 208, 180, 0.45);
    text-underline-offset: 0.2em;
}

.hero-copy .inline-link:hover {
    color: var(--accent-strong);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
}

.button {
    display: inline-block;
    padding: 12px 18px;
    border-radius: 999px;
    border: 1px solid var(--border);
    font-weight: 600;
}

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

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

.hero-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.hero-card p {
    color: var(--muted);
}

.hero-card h2 {
    margin: 0 0 12px;
    font-size: 1.1rem;
}

.hero-card ul {
    margin: 0;
    padding-left: 18px;
    color: var(--muted);
}

.section {
    max-width: 1100px;
    margin: 0 auto;
    padding: 32px 0 24px;
    position: relative;
    z-index: 1;
}

.section-heading {
    margin-bottom: 18px;
}

.section-heading h2 {
    margin: 0;
    font-size: 1.75rem;
}

.research-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.16);
}

.research-card p {
    margin: 0 0 10px;
    color: var(--muted);
}

.publication-list {
    list-style: none;
    padding: 0;
    margin: 0 0 16px;
    display: grid;
    gap: 12px;
}

.publication-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

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

.publication-title {
    color: var(--accent-strong);
    font-weight: 600;
}

.publication-title:hover {
    color: var(--accent);
}

.publication-meta {
    color: var(--muted);
    font-size: 0.95rem;
}

.text-link {
    display: inline-block;
    font-weight: 600;
    color: var(--accent);
}

.project-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.project-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 18px;
    overflow: hidden;
    transition: transform 160ms ease, box-shadow 160ms ease;
}

.project-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.24);
}

.project-thumb {
    height: 180px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.project-card-body {
    display: flex;
    flex: 1;
    flex-direction: column;
    padding: 18px 18px 20px;
}

.project-card h3 {
    margin: 0;
    font-size: 1.05rem;
}

.project-card p {
    margin: 8px 0 0;
    color: var(--muted);
    font-size: 0.95rem;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: auto;
    padding-top: 12px;
}

.tag {
    display: inline-block;
    padding: 5px 9px;
    border-radius: 999px;
    background: rgba(142, 208, 180, 0.16);
    color: var(--accent-strong);
    font-size: 0.74rem;
    font-weight: 600;
}

.about-section {
    padding-bottom: 72px;
}

.about-content {
    max-width: 700px;
}

.about-content p {
    color: var(--muted);
    margin: 0 0 12px;
}

.social-links {
    display: flex;
    gap: 14px;
    font-size: 1.2rem;
}

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

@media (max-width: 760px) {
    .site-header {
        padding: 16px 16px 0;
    }

    .top-nav {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .hero {
        grid-template-columns: 1fr;
        padding-top: 40px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: flex-start;
    }
}
    border-radius: 5px;
}
.collapsible:hover {
    background-color: #4b4b4b;
}

.collapsible-icon {
    font-size: 15px;
    padding-left: 5px;
    vertical-align: top;
    padding-top: 8px;
}

.collapsible-indicator-icon {
    font-size: 14px;
    padding-left: 5px;
    padding-top: 4px;
    padding-right: 8px;
    vertical-align: top;
    float: right;
    transition: transform 0.2s ease-in-out;

}
.collapsible-indicator-icon:focus {
    -webkit-transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    transform: rotate(45deg);
}

.collapsible-inner {
    padding-left: 10px;
    padding-right: 10px;
    padding-bottom: 5px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}