:root {
  --bg: #0b0e14; --bg-card: #121620; --border: #232a3a;
  --text: #e6e9f0; --text-dim: #9aa3b5; --text-faint: #6b7385;
  --accent: #5eead4; --accent-dim: rgba(94, 234, 212, 0.12);
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
}
html[data-theme="light"] {
  --bg: #f6f7f9; --bg-card: #ffffff; --border: #dee3ec;
  --text: #171a21; --text-dim: #495063; --text-faint: #8a92a6;
  --accent: #0d8a76; --accent-dim: rgba(13, 138, 118, 0.10);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { background: var(--bg); color: var(--text); font-family: var(--sans); line-height: 1.75; font-size: 16.5px; }
nav { border-bottom: 1px solid var(--border); }
nav .wrap { max-width: 760px; margin: 0 auto; padding: 0 24px; height: 60px; display: flex; align-items: center; justify-content: space-between; }
nav a { font-family: var(--mono); font-weight: 600; color: var(--accent); text-decoration: none; font-size: 15px; }
article { max-width: 760px; margin: 0 auto; padding: 64px 24px 96px; }
.kicker { font-family: var(--mono); font-size: 13px; color: var(--accent); letter-spacing: .08em; text-transform: uppercase; margin-bottom: 16px; }
h1 { font-size: clamp(28px, 4.5vw, 40px); line-height: 1.2; letter-spacing: -0.02em; margin-bottom: 12px; }
.meta { color: var(--text-faint); font-size: 14px; margin-bottom: 40px; }
h2 { font-size: 23px; margin: 44px 0 14px; letter-spacing: -0.01em; }
p { margin-bottom: 18px; color: var(--text-dim); }
p strong, li strong { color: var(--text); }
article a { color: var(--accent); }
ul, ol { margin: 0 0 18px 24px; color: var(--text-dim); }
li { margin-bottom: 8px; }
code { font-family: var(--mono); font-size: 14px; background: var(--accent-dim); border-radius: 4px; padding: 1px 6px; }
pre { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px; overflow-x: auto; margin-bottom: 18px; }
pre code { background: none; padding: 0; font-size: 13.5px; color: var(--text-dim); }
blockquote { border-left: 3px solid var(--accent); padding: 4px 0 4px 18px; margin-bottom: 18px; color: var(--text-dim); font-style: italic; }
.foot { margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--border); font-size: 14.5px; color: var(--text-faint); }
.foot a { color: var(--accent); }