:root {
  --bg-deep: #08050f;
  --bg-rise: #1a1530;
  --text: #e9eaf1;
  --text-muted: #8e90a3;
  --text-dim: #5a5c6e;
  --accent: #B8C7FF;
  --line: #2a2747;
  --glow: rgba(184, 199, 255, 0.18);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(ellipse 70% 40% at 50% 0%, rgba(184, 199, 255, 0.06) 0%, transparent 70%),
    linear-gradient(180deg, #1a1530 0%, #08050f 100%);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
        "Noto Sans KR", "Segoe UI", system-ui, sans-serif;
  min-height: 100vh;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 24px 96px;
  position: relative;
}

/* Language switcher — top-right chip cluster. To add a new locale,
 * insert another <a> in every page's switcher block and a matching
 * /<lang>/ directory; CSS handles N entries without change.
 */
.lang-switcher {
  position: absolute;
  top: 24px;
  right: 24px;
  display: flex;
  gap: 4px;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.16em;
}
.lang-switcher a {
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--text-muted);
  background: rgba(184, 199, 255, 0.03);
}
.lang-switcher a:hover {
  color: var(--text);
  border-color: var(--text-muted);
  text-decoration: none;
}
.lang-switcher a.active {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(184, 199, 255, 0.08);
  cursor: default;
  pointer-events: none;
}

/* Root chooser landing — big EN/KO buttons. */
.chooser {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 48px 0 32px;
}
.chooser a {
  display: block;
  padding: 24px 28px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(184, 199, 255, 0.04);
  color: var(--text);
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.chooser a:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
  text-decoration: none;
}
.chooser .label {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--accent);
}
.chooser .name {
  font-family: Georgia, "Times New Roman", serif;
  font-style: italic;
  font-size: 28px;
  margin-top: 4px;
  color: var(--text);
}

p.eyebrow {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 16px;
}

h1 {
  font-family: Georgia, "Times New Roman", serif;
  font-style: italic;
  font-weight: 400;
  font-size: 40px;
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}
h1 em { font-style: italic; color: var(--accent); }

h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-style: italic;
  font-weight: 400;
  font-size: 22px;
  line-height: 1.3;
  margin: 48px 0 14px;
  color: var(--text);
}

h3 {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 28px 0 10px;
}

p, li {
  color: var(--text-muted);
  margin: 0 0 14px;
}
li { margin-bottom: 6px; }

ul { padding-left: 22px; }

strong { color: var(--text); font-weight: 600; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 64px 0;
}

nav.toc {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 32px 0 56px;
}
nav.toc a {
  display: inline-block;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: rgba(184, 199, 255, 0.04);
}
nav.toc a:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

footer {
  margin-top: 80px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}
footer a { color: var(--text-muted); }

.meta {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-top: 6px;
}

.contact {
  display: inline-block;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
  padding: 6px 12px;
  background: rgba(184, 199, 255, 0.08);
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--accent);
  margin-bottom: 14px;
}

@media (max-width: 600px) {
  main { padding: 64px 20px 64px; }
  h1 { font-size: 32px; }
  h2 { font-size: 19px; }
  .lang-switcher { top: 18px; right: 18px; }
}