:root {
  color-scheme: light;
  --ink: #14151a;
  --muted: #525965;
  --line: #dfe2e8;
  --glass: rgba(255, 255, 255, .72);
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 88px; }
body {
  margin: 0; color: var(--ink);
  font: 16px/1.75 -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  background: radial-gradient(ellipse at 8% 0%, #e4e5ff, transparent 48%),
              radial-gradient(ellipse at 95% 20%, #dff5f8, transparent 42%), #f4f5f9;
}
a { color: inherit; text-underline-offset: 4px; }
a:hover { color: #394ba0; }
a:focus-visible, summary:focus-visible { outline: 3px solid #5868b3; outline-offset: 5px; }
.wrap { width: min(1040px, 100%); margin: auto; padding: 0 28px; }
.nav { border-bottom: 1px solid #fff; background: var(--glass); }
.nav .wrap { min-height: 68px; display: flex; align-items: center; gap: 24px; flex-wrap: wrap; padding-top: 12px; padding-bottom: 12px; }
.brand { font-size: 19px; font-weight: 750; text-decoration: none; letter-spacing: .04em; }
.nav-sp { flex: 1; }
.nav a:not(.brand) { font-size: 14px; }
.skip { position: absolute; top: -100px; left: 16px; padding: 10px 16px; background: white; z-index: 10; }
.skip:focus { top: 12px; }
.hero { padding: 64px 0 36px; }
.eyebrow { color: var(--muted); font-size: 12px; letter-spacing: .12em; font-weight: 650; }
h1, h2, h3 { line-height: 1.3; letter-spacing: -.02em; }
h1 { margin: 16px 0; font-size: clamp(32px, 5.5vw, 52px); }
h2 { margin: 0 0 16px; font-size: 25px; }
h3 { margin: 0 0 8px; font-size: 18px; }
p { margin: 0 0 12px; }
.intro { color: var(--muted); max-width: 44em; font-size: 18px; }
.download-card { margin-top: 26px; padding: 25px 28px; border: 1px solid #fff; border-radius: 18px; background: var(--glass); box-shadow: 0 15px 40px -28px #25233b; }
.download-row { display: flex; flex-wrap: wrap; align-items: center; gap: 18px 28px; }
.button { display: inline-flex; justify-content: center; padding: 12px 23px; border-radius: 11px; background: var(--ink); color: white; text-decoration: none; font-weight: 600; line-height: 1.5; }
.button:hover { background: #303744; color: white; }
.requirements { flex: 1; color: var(--muted); font-size: 14px; min-width: min(240px, 100%); }
.requirements p { margin: 0; }
.note { margin-top: 15px; color: var(--muted); font-size: 14px; }
.contents { display: flex; flex-wrap: wrap; gap: 10px 26px; padding: 0 0 32px; font-size: 14px; }
section { padding: 34px 0; border-top: 1px solid var(--line); }
.steps { list-style: none; counter-reset: step; padding: 0; margin: 0; display: grid; gap: 14px; }
.steps li { counter-increment: step; position: relative; padding: 22px 24px 22px 78px; background: var(--glass); border: 1px solid #fff; border-radius: 16px; }
.steps li::before { content: counter(step, decimal-leading-zero); position: absolute; left: 22px; top: 21px; font-size: 19px; color: #5f6495; font-weight: 650; }
.steps p:last-child { margin-bottom: 0; }
code { padding: 2px 5px; border-radius: 5px; background: #e9ecf3; font-size: .9em; overflow-wrap: anywhere; }
.tip { padding: 18px 22px; margin-top: 18px; background: #edf0fb; border-radius: 12px; }
.tip p:last-child { margin-bottom: 0; }
details { padding: 17px 0; border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 600; }
details p { margin: 12px 0 0; color: var(--muted); }
.checklist { padding-left: 23px; }
.checklist li { margin: 7px 0; }
footer { margin-top: 32px; padding: 26px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 26px; }
.tutorial-figure { margin: 24px 0; }
.tutorial-figure img { display: block; width: 100%; height: auto; border: 1px solid #fff; border-radius: 14px; }
.tutorial-figure figcaption { margin-top: 10px; color: var(--muted); font-size: 13px; }
.prompt { white-space: pre-wrap; overflow-wrap: anywhere; padding: 22px; background: #e9ecf3; border: 1px solid var(--line); border-radius: 14px; font: inherit; font-size: 15px; }
.related { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin: 30px 0; }
.related a { display: block; padding: 22px; border: 1px solid #fff; border-radius: 16px; background: var(--glass); text-decoration: none; }
.related a:hover strong { text-decoration: underline; }
.related span { display: block; margin-top: 6px; font-size: 14px; color: var(--muted); }
@media (max-width: 600px) {
  .related { grid-template-columns: 1fr; }
  .wrap { padding: 0 20px; }
  .nav .wrap { gap: 16px; }
  .hero { padding-top: 36px; }
  .download-card { padding: 21px; }
  .button { width: 100%; }
  .steps li { padding: 20px 18px 20px 58px; }
  .steps li::before { left: 16px; font-size: 16px; }
  .intro { font-size: 16px; }
}