:root {
  --bg: #0f1115;
  --panel: #161a21;
  --line: #262c37;
  --text: #d8dee9;
  --dim: #8b94a7;
  --accent: #7ee0a8;
  --accent2: #f0b072;
  --code-bg: #11141a;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    "Noto Sans", "Noto Naskh Arabic", "Noto Sans Devanagari", "Noto Sans SC",
    "Noto Sans JP", "Noto Sans KR", Arial, sans-serif;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #fbfbfd; --panel: #fff; --line: #e3e6ec; --text: #1c2128;
    --dim: #5b6472; --accent: #1a7f4b; --accent2: #a35c12; --code-bg: #f4f5f8;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.7 var(--sans);
  -webkit-text-size-adjust: 100%;
}
.wrap { max-width: 48rem; margin: 0 auto; padding: 0 1.5rem; }

/* ---- nav ---- */
.nav { border-bottom: 1px solid var(--line); background: var(--bg);
  position: sticky; top: 0; z-index: 20; backdrop-filter: blur(8px); }
.navin { max-width: 60rem; margin: 0 auto; padding: .7rem 1.5rem;
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.brand { font-weight: 700; font-size: 1.15rem; text-decoration: none;
  color: var(--text); letter-spacing: -.02em; }
.brand span { color: var(--accent); }
.links { display: flex; gap: 1.1rem; margin-inline-start: auto; flex-wrap: wrap; }
.links a { color: var(--dim); text-decoration: none; font-size: .95rem; }
.links a:hover { color: var(--text); }
.links a.on { color: var(--accent); font-weight: 600; }

/* ---- language switcher ---- */
.langs { position: relative; }
.langbtn { background: var(--panel); color: var(--text); cursor: pointer;
  border: 1px solid var(--line); border-radius: 999px; padding: .3rem .8rem;
  font: inherit; font-size: .88rem; }
.langbtn:hover { border-color: var(--accent); }
.langmenu { position: absolute; inset-inline-end: 0; top: calc(100% + .4rem);
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  padding: .4rem; min-width: 11rem; max-height: 70vh; overflow-y: auto;
  box-shadow: 0 12px 32px rgb(0 0 0 / .28); }
.langmenu a { display: block; padding: .35rem .6rem; border-radius: 6px;
  color: var(--text); text-decoration: none; font-size: .9rem; }
.langmenu a:hover { background: var(--bg); }
.langmenu a.on { color: var(--accent); font-weight: 600; }

/* ---- content ---- */
main.wrap { padding-top: 3rem; padding-bottom: 4rem; }
.crumbs { color: var(--dim); font-size: .875rem; margin: 0 0 1.5rem; }
.crumbs a { color: var(--dim); }
.sec { margin-bottom: 3rem; }
h1 { font-size: clamp(1.9rem, 5vw, 2.7rem); line-height: 1.2;
  letter-spacing: -.025em; margin: 0 0 .75rem; }
h2 { font-size: 1.05rem; text-transform: uppercase; letter-spacing: .08em;
  color: var(--dim); font-weight: 600; margin: 0 0 1rem; }
h3 { font-size: 1.05rem; margin: 0 0 .4rem; letter-spacing: -.01em; }
.lead { font-size: 1.15rem; color: var(--dim); margin: 0 0 1.5rem;
  max-width: 42rem; }
p { margin: 0 0 1rem; }
a { color: var(--accent); }
.cta { display: flex; gap: .7rem; flex-wrap: wrap; margin-top: 1.5rem; }
.btn { display: inline-block; background: var(--accent); color: var(--bg);
  text-decoration: none; padding: .55rem 1.1rem; border-radius: 8px;
  font-weight: 600; font-size: .95rem; }
.btn.ghost { background: transparent; color: var(--accent);
  border: 1px solid var(--line); }
.btn.ghost:hover { border-color: var(--accent); }

/* ---- code ---- */
pre { background: var(--code-bg); border: 1px solid var(--line);
  border-radius: 10px; padding: 1rem 1.1rem; overflow-x: auto;
  font-family: var(--mono); font-size: .86rem; line-height: 1.65;
  margin: 0 0 1rem; direction: ltr; text-align: left; }
code { font-family: var(--mono); font-size: .9em; }
p code, td code, li code, h3 code { background: var(--code-bg);
  border: 1px solid var(--line); padding: .08em .32em; border-radius: 4px;
  direction: ltr; unicode-bidi: embed; }

/* ---- cards ---- */
.cards { display: grid; gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
.card { background: var(--panel); border: 1px solid var(--line);
  border-radius: 10px; padding: 1.1rem 1.2rem; }
.card p { margin: 0; color: var(--dim); font-size: .95rem; }

/* ---- tables ---- */
.tw { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: .9rem; }
th, td { text-align: start; padding: .55rem .6rem;
  border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--dim); font-weight: 600; font-size: .78rem;
  text-transform: uppercase; letter-spacing: .05em; }
tbody tr:last-child td { border-bottom: 0; }
td code { white-space: nowrap; }

/* ---- steps ---- */
ol.steps { padding-inline-start: 1.3rem; margin: 0; }
ol.steps > li { margin-bottom: 1.75rem; }
ol.steps > li::marker { color: var(--accent); font-weight: 700; }
ol.steps p { color: var(--dim); }

/* ---- callout ---- */
.callout { border-inline-start: 2px solid var(--accent2);
  background: var(--panel); padding: 1rem 1.2rem;
  border-radius: 0 10px 10px 0; }
.callout.warn { border-inline-start-color: #e06c6c; }
.callout h3 { margin-bottom: .5rem; }
.callout p:last-child { margin-bottom: 0; }

/* ---- untranslated notice ---- */
.untrans { font-size: .82rem; color: var(--accent2);
  border: 1px dashed var(--line); border-radius: 8px; padding: .45rem .7rem;
  margin: 0 0 1rem; }

/* ---- footer ---- */
.foot { border-top: 1px solid var(--line); padding: 2rem 0 3rem;
  color: var(--dim); font-size: .9rem; }
.foot p { margin: 0 0 .5rem; }
.flinks a { margin-inline-end: .3rem; }
.dim { color: var(--dim); font-size: .85rem; }

@media (max-width: 34rem) {
  .links { gap: .8rem; font-size: .9rem; }
  .links a { font-size: .88rem; }
}