:root {
  color-scheme: light dark;
  --ink: #1b1f23;
  --muted: #5a6572;
  --bg: #fdfcfb;
  --accent: #1f5f4f;
  --accent-bg: #eaf3ef;
  --border: #e3e0da;
  --max: 760px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}
.wrap { max-width: var(--max); margin: 0 auto; padding: 2rem 1.25rem 4rem; }
header.site { border-bottom: 1px solid var(--border); }
header.site .wrap { padding-top: 1rem; padding-bottom: 1rem; display: flex; justify-content: space-between; align-items: baseline; }
header.site a { color: var(--ink); text-decoration: none; font-weight: 600; }
h1 { font-size: 1.9rem; line-height: 1.25; margin: 0 0 .5rem; }
h2 { font-size: 1.35rem; margin: 2.2rem 0 .75rem; }
h3 { font-size: 1.1rem; margin: 1.6rem 0 .5rem; }
p { margin: 0 0 1rem; }
.lede { font-size: 1.15rem; color: var(--muted); }
.tag { display: inline-block; background: var(--accent-bg); color: var(--accent); font-size: .8rem; font-weight: 600; padding: .25rem .6rem; border-radius: 999px; margin-bottom: 1rem; }
.disclaimer { font-size: .85rem; color: var(--muted); border-left: 3px solid var(--border); padding-left: .9rem; margin: 1.5rem 0; }
.cta {
  display: inline-block; background: var(--accent); color: #fff; text-decoration: none;
  font-weight: 700; padding: .85rem 1.5rem; border-radius: 8px; font-size: 1.05rem;
}
.cta:hover { opacity: .92; }
.price { font-size: 1.1rem; color: var(--muted); margin-top: .6rem; }
.box { background: var(--accent-bg); border-radius: 10px; padding: 1.25rem 1.4rem; margin: 1.5rem 0; }
.box ul { margin: 0; padding-left: 1.2rem; }
.center { text-align: center; }
ul, ol { padding-left: 1.3rem; }
li { margin-bottom: .4rem; }
code, pre { font-family: ui-monospace, Consolas, monospace; font-size: .9rem; }
pre { background: #11161a; color: #e6e6e6; padding: 1rem; border-radius: 8px; overflow-x: auto; white-space: pre-wrap; }
.articles-list a { display: block; padding: .6rem 0; border-bottom: 1px solid var(--border); text-decoration: none; color: var(--ink); font-weight: 600; }
footer.site { border-top: 1px solid var(--border); margin-top: 3rem; }
footer.site .wrap { padding-top: 1.5rem; padding-bottom: 1.5rem; font-size: .85rem; color: var(--muted); display: flex; gap: 1rem; flex-wrap: wrap; }
footer.site a { color: var(--muted); }
.error-box { background: #fff3f1; border: 1px solid #e9a89a; border-radius: 10px; padding: 1.5rem; }

@media (prefers-color-scheme: dark) {
  :root { --ink: #eef1f3; --bg: #121416; --muted: #a2abb3; --accent: #52c9a8; --accent-bg: #16302a; --border: #2a2e32; }
  .cta { color: #06241c; }
  pre { background: #1a1f23; }
  .error-box { background: #2a1512; border-color: #7a3a2c; }
}