*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --bg: #f7f7f5;
  --paper: #ffffff;
  --text: #1d1d1f;
  --muted: #5a5f69;
  --accent: #183a8a;
  --border: #d8dde6;
  --max-width: 860px;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.65;
}

.article {
  max-width: var(--max-width);
  margin: 2rem auto;
  padding: 3rem;
  background: var(--paper);
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.08);
  border-radius: 12px;
}

.article-header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
}

.journal,
.journal-meta,
.dates,
.citation,
.subtitle {
  color: var(--muted);
}

.journal,
.journal-meta {
  text-align: center;
  margin: 0;
}

.journal {
  text-transform: uppercase;
  letter-spacing: 0.03em;
  font-size: 0.88rem;
}

.journal-meta {
  margin-top: 0.25rem;
  font-size: 0.92rem;
}

h1 {
  margin: 1.5rem 0 0.75rem;
  font-size: 2rem;
  line-height: 1.25;
  text-align: center;
}

.subtitle {
  text-align: center;
  font-style: italic;
  font-size: 1.1rem;
  margin-bottom: 1.75rem;
}

.authors {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0;
}

.author {
  padding: 1rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fcfcfd;
}

.author h2 {
  font-size: 1.08rem;
  margin: 0 0 0.4rem;
  color: var(--accent);
}

.author p,
.dates,
.citation,
p,
li {
  margin: 0 0 0.9rem;
}

h2 {
  margin: 2rem 0 0.8rem;
  font-size: 1.45rem;
  color: var(--accent);
  border-bottom: 2px solid #e8edf7;
  padding-bottom: 0.25rem;
}

h3 {
  margin: 1.6rem 0 0.6rem;
  font-size: 1.1rem;
  font-style: italic;
}

p {
  text-align: justify;
}

.keywords {
  font-size: 0.98rem;
}

a {
  color: var(--accent);
  text-decoration: none;
  overflow-wrap: anywhere;
}

a:hover {
  text-decoration: underline;
}

.references {
  padding-left: 1.35rem;
}

.references li {
  margin-bottom: 0.9rem;
}

.reference-note {
  margin-top: 1.2rem;
  font-size: 0.92rem;
  color: var(--muted);
}

@media (max-width: 720px) {
  .article {
    margin: 0;
    padding: 1.25rem;
    border-radius: 0;
    box-shadow: none;
  }

  h1 {
    font-size: 1.55rem;
  }
}