:root {
  --bg-deep: #0E1014;
  --bg-rise: #181C24;
  --text: #F2F4F2;
  --text-muted: #9aa09c;
  --text-dim: #5a605b;
  --accent: #C8FF3D;
  --line: #232831;
  --glow: rgba(200, 255, 61, 0.16);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(ellipse 70% 40% at 80% 0%, rgba(200, 255, 61, 0.05) 0%, transparent 70%),
    linear-gradient(180deg, #181C24 0%, #0E1014 100%);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
        "Noto Sans KR", "Inter Tight", "Segoe UI", system-ui, sans-serif;
  min-height: 100vh;
}

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

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

h1 {
  font-size: 40px;
  line-height: 1.1;
  margin: 8px 0 12px;
  font-weight: 800;
  letter-spacing: -0.01em;
}
h1 em {
  font-style: normal;
  color: var(--accent);
}
h2 {
  font-size: 20px;
  margin: 36px 0 10px;
  font-weight: 700;
  letter-spacing: -0.005em;
}
h3 {
  font-size: 16px;
  margin: 24px 0 8px;
  font-weight: 700;
  color: var(--text);
}
p, li { color: var(--text); }
li { margin: 4px 0; }

.eyebrow {
  font-family: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 8px;
}
.meta {
  color: var(--text-muted);
  font-size: 13px;
  margin: 0 0 28px;
}

code {
  font-family: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
  background: rgba(200, 255, 61, 0.06);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--accent);
}

a.contact {
  display: inline-block;
  font-family: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  font-size: 14px;
  letter-spacing: 0.04em;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(200, 255, 61, 0.05);
  margin-top: 4px;
}
a.contact:hover {
  border-color: var(--accent);
  text-decoration: none;
}

nav.toc {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 28px 0 40px;
}
nav.toc a {
  font-family: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-muted);
  background: rgba(200, 255, 61, 0.03);
}
nav.toc a:hover {
  color: var(--text);
  border-color: var(--text-muted);
  text-decoration: none;
}

footer {
  margin-top: 80px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.8;
}
footer a {
  color: var(--text-muted);
}
footer a:hover {
  color: var(--accent);
  text-decoration: none;
}