:root {
    --doe-blue: #1a56a0;
    --vt-orange: #E5751F;
    --vt-maroon: #861F41;
    --bg-dark: #0a0a0a;
    --bg-card: #141414;
    --text-primary: #e8e8e8;
    --text-secondary: #a0a0a0;
    --border: #888888;
}
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

.header {
    background: linear-gradient(135deg, var(--vt-maroon), #4a1128);
    border-bottom: 3px solid var(--vt-orange);
    padding: 2rem 1rem;
    text-align: center;
}

.header h1 { color: var(--text-primary); font-size: 1.8rem; font-weight: 700; margin-bottom: 0.35rem; }
.header .subtitle { color: var(--vt-orange); font-size: 1rem; font-weight: 500; }
.header .team { margin-top: 0.6rem; font-size: 0.82rem; color: rgba(255,255,255,0.65); }

.nav-bar {
    background: var(--bg-card);
    border-bottom: 3px solid var(--vt-orange);
    padding: 0.6rem 1rem;
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.nav-bar a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.82rem;
    padding: 0.3rem 0.7rem;
    border-radius: 4px;
    transition: all 0.2s;
}

.nav-bar a:hover, .nav-bar a.active {
    color: var(--vt-orange);
    background: rgba(240,165,0,0.1);
    font-weight: 600;
}

.section h2 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

/* Research system card */
.system-card {
    background: var(--text-secondary);
    border: 1px solid var(--vt-maroon);
    border-radius: 10px;
    padding: 0.5rem;
    box-shadow: 0 0 16px rgba(240,165,0,0.08);
}

.system-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--vt-maroon);
    margin-bottom: 0.25rem;
}

.system-card .system-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.system-card p {
    font-size: 0.88rem;
    color: var(--vt-maroon);
    line-height: 1.65;
    margin-bottom: 0.75rem;
}

.container { max-width: 90%; margin: 0 auto; padding: 2rem 1rem; }

.person-card {
    box-shadow: 0 4px 8px 5px rgba(231, 227, 227, 0.2);
    width: 33%;
    margin: right;
    text-align: center;
    font-family: arial;
    padding-top: 10px;
}

.title {
    color: grey;
    font-size: 24px;
    font-weight: bold;
    text-align: center;
    padding: 0;
}

.subtitle {
    color: var(--vt-maroon);
    font-size: 14px;
    padding-bottom: 5px;
    font-weight: bold;
    margin: 0;
    text-align: center;
}

.card {
    background: #fff;
    padding: 1.75rem;
    border-radius: 18px;
    box-shadow: 0 0.75rem 1.75rem rgba(15, 23, 42, 0.08);
    border: 1px solid rgba(15, 23, 42, 0.05);
}

.card h2 {
    margin-top: 0;
    margin-bottom: 0.75rem;
    color: var(--vt-maroon);
}

footer {
      background: var(--bg-dark);
      text-align: center;
      padding: 1rem;
      font-size: 0.75rem;
      color: var(--text-secondary);
      border-top: 1px solid var(--border);
}