:root {
  color-scheme: dark;
  --bg: #070909;
  --panel: #101515;
  --line: rgba(218, 214, 198, 0.13);
  --line-strong: rgba(218, 214, 198, 0.22);
  --text: #ece8dd;
  --muted: #9c998f;
  --soft: #6f716b;
  --accent: #d6b65c;
  font-family: "Aptos", "Pretendard", "SUIT", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 18% 0%, rgba(214, 182, 92, 0.12), transparent 28rem),
    linear-gradient(180deg, #0c1010, var(--bg) 28rem);
  line-height: 1.72;
}

.page-shell {
  width: min(980px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 24px 0 56px;
}

.page-header,
.page-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
}

.brand-link {
  color: var(--text);
  text-decoration: none;
  font-weight: 760;
  letter-spacing: 0;
}

.page-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.page-nav a,
.page-footer a {
  color: var(--muted);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 0.35rem 0.52rem;
  font-size: 0.86rem;
}

.page-nav a:hover,
.page-footer a:hover {
  color: var(--text);
  border-color: var(--line-strong);
  background: rgba(236, 232, 221, 0.035);
}

main {
  padding-top: 42px;
}

.kicker {
  margin: 0 0 0.5rem;
  color: var(--accent);
  font: 0.74rem/1.2 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: 0.06em;
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.1rem, 7vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

h2 {
  margin: 2.4rem 0 0.75rem;
  font-size: clamp(1.35rem, 3vw, 2rem);
  line-height: 1.1;
  letter-spacing: -0.018em;
}

h3 {
  margin: 1.8rem 0 0.5rem;
  font-size: 1.05rem;
}

p,
li {
  color: var(--muted);
  font-size: 1rem;
}

p.lead {
  color: #cfcabe;
  font-size: clamp(1.08rem, 2.4vw, 1.32rem);
  max-width: 68ch;
}

a {
  color: var(--accent);
}

.panel,
.article-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(236, 232, 221, 0.025), transparent 8rem), rgba(16, 21, 21, 0.9);
  padding: 1.15rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.article-list {
  display: grid;
  gap: 0.8rem;
  margin-top: 1.3rem;
}

.article-card {
  display: block;
  color: inherit;
  text-decoration: none;
}

.article-card strong {
  color: var(--text);
  display: block;
  margin-bottom: 0.25rem;
}

.article-card span {
  color: var(--muted);
}

.note {
  border-left: 3px solid var(--accent);
  padding: 0.8rem 1rem;
  background: rgba(214, 182, 92, 0.08);
  color: #cfcabe;
}

.research-note,
.references {
  border-top: 1px solid var(--line);
  margin-top: 2.2rem;
  padding-top: 1.2rem;
}

.research-note h2,
.references h2 {
  margin-top: 0;
}

.references ul {
  padding-left: 1.1rem;
}

.references li {
  margin: 0.48rem 0;
}

.page-footer {
  margin-top: 48px;
  border-top: 1px solid var(--line);
  border-bottom: 0;
  padding-top: 18px;
  color: var(--soft);
}

@media (max-width: 720px) {
  .grid { grid-template-columns: 1fr; }
  .page-header { align-items: flex-start; }
}