:root {
    --background: #f7f7f5;
    --text: #20201e;
    --muted: #777773;
    --line: #d9d9d4;
    --link: #044389;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--background);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
}

.page-shell {
    width: min(680px, calc(100% - 48px));
    min-height: 100vh;
    margin: 0 auto;
    padding: 18vh 0 12vh;
}

.hero {
    border-bottom: 1px solid var(--line);
    padding-bottom: 32px;
}

h1 {
    margin: 0;
    font-size: clamp(2.8rem, 8vw, 5rem);
    font-weight: 600;
    letter-spacing: -0.06em;
}

.role {
    margin: 16px 0 0;
    color: var(--muted);
    font-size: 1.05rem;
    line-height: 1.5;
}

.links-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 12px;
}

.research {
    margin-top: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--line);
}

.research h2 {
    margin: 0 0 20px;
    font-size: 1.5rem;
    font-weight: 600;
}

.research p {
    max-width: none;
    margin: 0 0 18px;
    color: var(--muted);
    font-size: 1.05rem;
    line-height: 1.7;
    text-align: justify;
}

.link-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 18px;
    border: 1px solid var(--text);
    border-radius: 6px;
    background: var(--text);
    color: white;
    font-size: 1rem;
    text-decoration: none;
    transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.link-button:hover {
    border-color: var(--link);
    background: var(--link);
    color: white;
    transform: translateY(-1px);
}

.arrow {
    color: var(--link);
    font-size: 1.1rem;
}

@media (max-width: 520px) {
    .page-shell {
        padding-top: 14vh;
    }

    .role {
        max-width: 280px;
    }
}