:root {
  --bg: #f4f7f8;
  --card: #ffffff;
  --ink: #122022;
  --muted: #4a6064;
  --teal: #0e7c86;
  --teal-dark: #0a5c63;
  --accent: #ff8a00;
  --warn-bg: #fff6e5;
  --warn-border: #f0c36d;
  --ok-bg: #e7f6f4;
  --border: #d5e1e3;
  --focus: #125cff;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; font-family: var(--sans); color: var(--ink); background:
    radial-gradient(1200px 600px at 10% -10%, #d9f3f1 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #ffe7c7 0%, transparent 50%),
    var(--bg);
  line-height: 1.55;
}
a { color: var(--teal-dark); }
a:hover { color: var(--teal); }
a:focus-visible, button:focus-visible, .btn:focus-visible {
  outline: 3px solid var(--focus); outline-offset: 2px;
}
.skip {
  position: absolute; left: -9999px; top: auto;
}
.skip:focus { left: 1rem; top: 1rem; z-index: 10; background: #fff; padding: .5rem .75rem; }
.wrap { width: min(980px, calc(100% - 2rem)); margin: 0 auto; }
header.hero {
  padding: 1.5rem 0 0.5rem;
}
.brand {
  display: flex; gap: 1rem; align-items: center; flex-wrap: wrap;
}
.brand img { width: 72px; height: 72px; border-radius: 18px; box-shadow: 0 8px 24px rgba(14,124,134,.25); }
.brand h1 { margin: 0; font-size: clamp(1.6rem, 4vw, 2.2rem); letter-spacing: -0.02em; }
.tag {
  display: inline-block; background: var(--ok-bg); color: var(--teal-dark);
  border: 1px solid #b7e4df; border-radius: 999px; padding: .2rem .65rem;
  font-size: .85rem; font-weight: 600;
}
.lede { color: var(--muted); font-size: 1.05rem; max-width: 46rem; }
.banner {
  background: var(--warn-bg); border: 1px solid var(--warn-border);
  border-radius: 14px; padding: 1rem 1.1rem; margin: 1.25rem 0 1.5rem;
}
.banner strong { color: #7a4b00; }
.grid {
  display: grid; gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin: 1.25rem 0 2rem;
}
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 16px;
  padding: 1.1rem 1.15rem; box-shadow: 0 10px 30px rgba(18,32,34,.04);
}
.card h2 { margin: 0 0 .4rem; font-size: 1.15rem; }
.card p { margin: 0 0 .85rem; color: var(--muted); }
.meta { font-family: var(--mono); font-size: .78rem; color: var(--muted); word-break: break-all; }
.btnrow { display: flex; flex-wrap: wrap; gap: .5rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  text-decoration: none; border-radius: 10px; padding: .65rem .95rem; font-weight: 650;
  border: 1px solid transparent;
}
.btn-primary { background: var(--teal); color: #fff; }
.btn-primary:hover { background: var(--teal-dark); color: #fff; }
.btn-secondary { background: #fff; color: var(--teal-dark); border-color: #9fd0cb; }
.btn-secondary:hover { background: var(--ok-bg); }
nav.toc {
  display: flex; flex-wrap: wrap; gap: .6rem; margin: 0 0 1.5rem;
}
nav.toc a {
  text-decoration: none; background: #fff; border: 1px solid var(--border);
  border-radius: 999px; padding: .35rem .8rem; color: var(--ink); font-size: .92rem;
}
section.block { margin: 2rem 0; }
section.block h2 { margin-bottom: .5rem; }
ol.steps, ul.clean { padding-left: 1.2rem; }
ol.steps li, ul.clean li { margin: .35rem 0; }
footer {
  margin: 3rem 0 2rem; padding-top: 1rem; border-top: 1px solid var(--border);
  color: var(--muted); font-size: .92rem;
}
.guide-page header { padding-top: 1rem; }
.guide-body {
  background: var(--card); border: 1px solid var(--border); border-radius: 16px;
  padding: 1.25rem 1.35rem; box-shadow: 0 10px 30px rgba(18,32,34,.04);
}
.guide-body h1 { font-size: 1.7rem; }
.guide-body h2 { margin-top: 1.6rem; }
.guide-body pre {
  overflow: auto; background: #0f2427; color: #e8f5f4; padding: 1rem; border-radius: 12px;
  font-family: var(--mono); font-size: .85rem;
}
.guide-body code { font-family: var(--mono); font-size: .9em; }
.guide-body p code, .guide-body li code {
  background: #eef5f6; padding: .1rem .35rem; border-radius: 6px;
}
.table-wrap { overflow: auto; margin: 1rem 0; border: 1px solid var(--border); border-radius: 12px; }
table { border-collapse: collapse; width: 100%; min-width: 560px; }
th, td { text-align: left; padding: .65rem .75rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { background: #eef6f7; }
@media (max-width: 640px) {
  .brand img { width: 60px; height: 60px; }
  .guide-body { padding: 1rem; }
}