:root {
  --surface: #fff; --raised: #f8faf9; --ink: #14191a; --muted: #55605f; --faint: #97a3a2;
  --accent: #0f4c54; --accent-hover: #0a3a40; --soft: #e6f1f2; --warm: #d9822b; --line: #e3e8e7;
  --code-bg: #0f1d1f; --code-ink: #d7e4e3;
}
@media (prefers-color-scheme: dark) {
  :root {
    --surface: #111617; --raised: #182022; --ink: #eef3f2; --muted: #a3b0af; --faint: #6b7978;
    --accent: #4dadb8; --accent-hover: #7dc8d1; --soft: #123a3f; --warm: #f0a04b; --line: #2a3537;
    --code-bg: #0a1314;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--surface); color: var(--ink); line-height: 1.65;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent); }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; height: auto; display: block; }
.wrap { max-width: 46rem; margin: 0 auto; padding: 0 1rem; }
.top { border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: .8rem; }
.top img { width: 9rem; }
.top nav { display: flex; align-items: center; gap: 1rem; font-size: .92rem; }
.top nav a:not(.btn) { color: var(--muted); text-decoration: none; }
.btn {
  display: inline-block; background: var(--accent); color: #fff; padding: .55rem .95rem; border-radius: .55rem;
  font-weight: 600; font-size: .92rem; text-decoration: none;
}
.btn:hover { background: var(--accent-hover); color: #fff; }
@media (prefers-color-scheme: dark) { .btn, .btn:hover { color: #0a1314; } }
.article { padding-block: 2rem 3rem; }
.kicker { margin: 0; color: var(--warm); font-size: .8rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
h1 { margin: .3rem 0 .4rem; font-size: clamp(1.7rem, 5vw, 2.3rem); line-height: 1.2; letter-spacing: -.02em; }
h2 { margin: 2.2rem 0 .6rem; font-size: 1.3rem; line-height: 1.3; letter-spacing: -.01em; }
h3 { margin: 1.3rem 0 .4rem; font-size: 1.02rem; }
.updated { margin: 0 0 1.4rem; color: var(--faint); font-size: .85rem; }
.lead { font-size: 1.08rem; color: var(--muted); }
li { margin-bottom: .4rem; }
code { font-family: ui-monospace, Consolas, Menlo, monospace; font-size: .88em; background: var(--soft); padding: .08em .3em; border-radius: .25em; overflow-wrap: anywhere; }
pre { margin: .8rem 0 1.1rem; padding: .9rem 1rem; overflow-x: auto; background: var(--code-bg); border-radius: .6rem; }
pre code { background: none; padding: 0; color: var(--code-ink); font-size: .84rem; line-height: 1.55; overflow-wrap: normal; }
.scroll { overflow-x: auto; margin: .8rem 0 1.1rem; border: 1px solid var(--line); border-radius: .6rem; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { text-align: left; vertical-align: top; padding: .6rem .8rem; border-bottom: 1px solid var(--line); }
thead th { background: var(--raised); color: var(--muted); font-size: .76rem; letter-spacing: .04em; text-transform: uppercase; }
tbody tr:last-child > * { border-bottom: 0; }
tbody th { font-weight: 500; }
th code { white-space: nowrap; overflow-wrap: normal; }
.warn { margin: 1rem 0; padding: .8rem 1rem; border-left: 3px solid var(--warm); background: var(--raised); border-radius: 0 .5rem .5rem 0; }
.guide-list { list-style: none; padding: 0; }
.guide-list li { padding: .9rem 0; border-bottom: 1px solid var(--line); margin: 0; }
.guide-list a { display: block; text-decoration: none; }
.guide-list span { color: var(--muted); font-size: .94rem; }
.sources { margin-top: 2.2rem; font-size: .9rem; }
.sources h2 { font-size: 1rem; }
.cta { margin-top: 2.5rem; padding: 1.4rem; background: var(--raised); border: 1px solid var(--line); border-radius: .8rem; }
.cta h2 { margin-top: 0; }
footer { border-top: 1px solid var(--line); padding: 1.6rem 0; color: var(--muted); font-size: .86rem; }
footer p { margin: 0 0 .4rem; }
.fine { color: var(--faint); font-size: .78rem; }