:root {
  color-scheme: light dark;
  --page: #f7f5ef;
  --surface: #fffdf8;
  --surface-strong: #ffffff;
  --text: #17201d;
  --muted: #56605c;
  --line: #d7ddd9;
  --brand: #086c5a;
  --brand-strong: #064f43;
  --brand-soft: #dff3ec;
  --warning: #8a3b12;
  --warning-soft: #fff0e6;
  --danger: #8b2131;
  --danger-soft: #fdecef;
  --code: #edf1ef;
  --shadow: 0 18px 50px rgb(22 44 36 / 10%);
  --radius: 18px;
  --max: 72rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #101714;
    --surface: #17211d;
    --surface-strong: #1d2924;
    --text: #edf5f1;
    --muted: #b0bdb7;
    --line: #34433d;
    --brand: #65d1b7;
    --brand-strong: #91e1ce;
    --brand-soft: #153a31;
    --warning: #ffb48b;
    --warning-soft: #40261c;
    --danger: #ff9aab;
    --danger-soft: #401f27;
    --code: #0c1310;
    --shadow: 0 18px 50px rgb(0 0 0 / 28%);
  }
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.65;
}

a { color: var(--brand); text-underline-offset: 0.18em; }
a:hover { color: var(--brand-strong); }
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--brand);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  top: -5rem;
  left: 1rem;
  z-index: 20;
  padding: 0.7rem 1rem;
  background: var(--text);
  color: var(--page);
  border-radius: 0.5rem;
}
.skip-link:focus { top: 1rem; }

.site-header {
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--page) 88%, transparent);
}

.nav,
.wrap {
  width: min(calc(100% - 2rem), var(--max));
  margin-inline: auto;
}

.nav {
  min-height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  font-weight: 800;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 0.65rem;
  background: var(--brand);
  color: var(--page);
  font-size: 1.15rem;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem 1rem;
  font-size: 0.93rem;
}

.nav-links a { color: var(--muted); text-decoration: none; }
.nav-links a:hover { color: var(--text); text-decoration: underline; }

.hero {
  padding: clamp(3.5rem, 9vw, 7.5rem) 0 clamp(3rem, 7vw, 5.5rem);
  background:
    radial-gradient(circle at 82% 10%, color-mix(in srgb, var(--brand) 17%, transparent), transparent 35rem),
    linear-gradient(180deg, var(--page), var(--surface));
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 1rem;
  padding: 0.32rem 0.72rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--brand-strong);
  background: var(--surface);
  font-size: 0.84rem;
  font-weight: 750;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1,
h2,
h3 { line-height: 1.16; letter-spacing: -0.035em; }
h1 { max-width: 14ch; margin: 0; font-size: clamp(2.7rem, 8vw, 5.9rem); }
h2 { margin: 0 0 1rem; font-size: clamp(1.8rem, 4vw, 2.8rem); }
h3 { margin: 0 0 0.55rem; font-size: 1.25rem; }

.lede {
  max-width: 43rem;
  margin: 1.35rem 0 0;
  color: var(--muted);
  font-size: clamp(1.12rem, 2vw, 1.35rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8rem;
  margin-top: 1.8rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.7rem 1.05rem;
  border: 2px solid var(--brand);
  border-radius: 0.75rem;
  background: var(--brand);
  color: #fff;
  font-weight: 750;
  text-decoration: none;
}

.button:hover { background: var(--brand-strong); color: #fff; }
.button.secondary { background: transparent; color: var(--brand-strong); }
.button.secondary:hover { background: var(--brand-soft); }
.button.placeholder { border-style: dashed; }

.download-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
  margin: 1.05rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.section { padding: clamp(3rem, 7vw, 5.5rem) 0; }
.section.alt { background: var(--surface); border-block: 1px solid var(--line); }
.section-intro { max-width: 46rem; color: var(--muted); font-size: 1.08rem; }

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.8rem;
}

.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.card {
  padding: clamp(1.1rem, 3vw, 1.55rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-strong);
  box-shadow: 0 1px 0 rgb(0 0 0 / 3%);
}

.card p:last-child,
.notice p:last-child { margin-bottom: 0; }

.number {
  display: grid;
  place-items: center;
  width: 2.1rem;
  height: 2.1rem;
  margin-bottom: 0.8rem;
  border-radius: 50%;
  background: var(--brand-soft);
  color: var(--brand-strong);
  font-weight: 850;
}

.notice {
  margin: 1.5rem 0;
  padding: 1.2rem 1.35rem;
  border: 1px solid var(--line);
  border-left: 0.35rem solid var(--brand);
  border-radius: 0.75rem;
  background: var(--brand-soft);
}

.notice.warning { border-left-color: var(--warning); background: var(--warning-soft); }
.notice.danger { border-left-color: var(--danger); background: var(--danger-soft); }
.notice h3 { color: var(--text); }

.plain-list { padding-left: 1.25rem; }
.plain-list li + li { margin-top: 0.55rem; }

.steps { counter-reset: steps; padding: 0; list-style: none; }
.steps li {
  position: relative;
  min-height: 2.5rem;
  padding: 0 0 1.1rem 3.2rem;
}
.steps li::before {
  counter-increment: steps;
  content: counter(steps);
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-weight: 800;
}

.table-wrap { overflow-x: auto; margin-top: 1.5rem; border: 1px solid var(--line); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; background: var(--surface-strong); }
th, td { padding: 0.9rem 1rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: var(--brand-soft); font-size: 0.88rem; }
tr:last-child td { border-bottom: 0; }

code,
.hash {
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  overflow-wrap: anywhere;
}

code { padding: 0.12em 0.32em; border-radius: 0.3rem; background: var(--code); }
pre {
  overflow-x: auto;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  background: var(--code);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
pre code { padding: 0; background: transparent; }

details { margin: 1rem 0; padding: 0.9rem 1rem; border: 1px solid var(--line); border-radius: 0.75rem; background: var(--surface-strong); }
summary { cursor: pointer; font-weight: 750; }

.placeholder-box {
  margin: 1.5rem 0;
  padding: 1rem 1.15rem;
  border: 2px dashed var(--warning);
  border-radius: 0.8rem;
  color: var(--text);
  background: var(--warning-soft);
  font-weight: 700;
}

.legal {
  max-width: 52rem;
  padding-block: clamp(2.5rem, 7vw, 5rem);
}
.legal h1 { max-width: none; font-size: clamp(2.3rem, 6vw, 4rem); }
.legal h2 { margin-top: 2.8rem; font-size: clamp(1.55rem, 4vw, 2.15rem); }
.legal h3 { margin-top: 1.8rem; }
.legal .meta { color: var(--muted); }

.site-footer { padding: 2.5rem 0; border-top: 1px solid var(--line); background: var(--surface); }
.footer-grid { display: flex; justify-content: space-between; align-items: flex-start; gap: 1.5rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 0.5rem 1rem; }
.small { color: var(--muted); font-size: 0.88rem; }

@media (max-width: 60rem) {
  .nav { align-items: flex-start; flex-direction: column; padding-block: 0.9rem; }
  .nav-links { justify-content: flex-start; }
  .grid,
  .grid.two { grid-template-columns: 1fr; }
  .footer-grid { flex-direction: column; }
  .button { width: 100%; }
  .actions { align-items: stretch; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}