:root {
  color-scheme: light;
  --ink: #112d2b;
  --muted: #536963;
  --paper: #f4f7f6;
  --line: #d7e1dd;
  --lime: #d2ef86;
  --forest: #143d36;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", Meiryo, sans-serif;
  font-synthesis: none;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 1.5rem; }
body { margin: 0; background: var(--paper); color: var(--ink); font-size: 1rem; line-height: 1.8; }
a { color: inherit; text-underline-offset: .24em; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
a:focus-visible, summary:focus-visible { outline: 3px solid #237962; outline-offset: 5px; }
img, svg { max-width: 100%; }
p, h1, h2, h3 { margin: 0; }
.wrap { width: min(100% - 5rem, 1060px); margin-inline: auto; }
.skip-link { position: absolute; left: 1rem; top: -100px; padding: .5rem 1rem; background: white; z-index: 10; }
.skip-link:focus { top: 1rem; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 96px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: .7rem; text-decoration: none; font-size: 1.4rem; font-weight: 750; letter-spacing: -.04em; }
.brand img { flex: 0 0 auto; border-radius: 11px; }
.brand b { font-weight: 400; }
.platform { color: var(--muted); font-size: .875rem; }
.platform span { margin-inline: .5rem; color: #9cafa8; }
.download-section { display: grid; grid-template-columns: 1fr 420px; align-items: center; gap: 4rem; padding: 3.75rem 0 2.75rem; }
.eyebrow { font-size: .75rem; font-weight: 700; letter-spacing: .17em; color: var(--muted); }
h1 { font-size: clamp(2.25rem, 4.8vw, 3.9rem); line-height: 1.24; letter-spacing: -.045em; margin: .8rem 0 1.3rem; font-weight: 750; }
.intro-text { max-width: 29rem; color: var(--muted); }
.signal { display: flex; align-items: center; gap: 1.4rem; max-width: 360px; margin-top: 2.2rem; color: var(--forest); }
.signal svg { min-width: 0; flex: 1; stroke: #397a61; stroke-width: 1.5; }
.signal .signal-axis { stroke: var(--line); stroke-width: 1; }
.signal > span { flex: 0 0 auto; font-size: 1.7rem; line-height: 1; font-weight: 600; letter-spacing: -.06em; }
.signal small { font-size: .875rem; font-weight: 400; letter-spacing: 0; }
.download-card { min-width: 0; padding: 1.8rem; border-radius: 22px; background: var(--ink); color: #fff; box-shadow: 0 14px 36px #112d2b12; }
.card-top { display: flex; align-items: center; gap: 1rem; }
.card-top img { flex: 0 0 auto; border-radius: 15px; border: 1px solid #416058; }
.card-top h2 { font-size: 1.5rem; line-height: 1.3; letter-spacing: -.03em; }
.card-top p { color: #bed0c8; font-size: .875rem; margin-top: .15rem; }
.release-info { margin: 1.6rem 0; padding-top: 1rem; border-top: 1px solid #3b5450; font-size: .875rem; }
.release-info div { display: flex; justify-content: space-between; flex-wrap: wrap; gap: .25rem 1rem; margin-block: .4rem; }
.release-info dt { color: #bed0c8; }
.release-info dd { margin: 0; overflow-wrap: anywhere; }
.download-button { display: flex; align-items: center; justify-content: center; gap: .65rem; min-height: 58px; padding: .9rem .8rem; background: var(--lime); color: #14332b; border: 1px solid var(--lime); border-radius: 10px; text-decoration: none; font-weight: 700; font-size: 1rem; line-height: 1.5; transition: background .15s; }
.download-button svg { flex: 0 0 22px; }
.download-button:hover { background: #e1f5b0; }
.download-button:active { background: #c1df76; }
.download-button:focus-visible { outline-color: white; }
.download-hint { margin-top: 1rem; font-size: .875rem; line-height: 1.7; color: #c6d7d0; }
.text-link { display: inline-block; padding-top: .75rem; font-size: .875rem; color: #e0edb9; }
.text-link span { margin-left: .35rem; }
.text-link:focus-visible { outline-color: var(--lime); }
.scope-note { display: grid; grid-template-columns: 13rem 1fr; gap: 1rem; border: 1px solid #cfdbd5; border-left: 3px solid #4c7864; background: #eaf0ec; padding: 1.2rem 1.4rem; border-radius: 0 10px 10px 0; }
.note-label { font-size: .875rem; font-weight: 700; padding-top: .1rem; }
.scope-note p { font-size: .875rem; color: #3e554c; }
.scope-note strong { font-weight: 650; color: var(--ink); }
.install-section { padding: 3.25rem 0 2.8rem; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 1.5rem; margin-bottom: 1.7rem; }
.section-heading h2 { margin-top: .4rem; font-size: 1.6rem; line-height: 1.5; letter-spacing: -.025em; }
.section-heading > p { max-width: 17rem; color: var(--muted); font-size: .875rem; }
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem; list-style: none; padding: 0; margin: 0; }
.steps li { border-top: 1px solid #b6c9bf; padding-top: 1.1rem; }
.step-number { display: block; color: #397055; font-size: 1.15rem; font-weight: 500; font-variant-numeric: tabular-nums; }
.steps h3 { font-size: 1.05rem; margin: .5rem 0 .65rem; font-weight: 700; }
.steps p { color: var(--muted); }
.install-help { margin-top: 1.7rem; font-size: .875rem; color: var(--muted); }
.install-help a { display: inline; color: #246248; margin-left: .3rem; }
.after-install { display: grid; grid-template-columns: 13rem 1fr; column-gap: 1rem; border-top: 1px solid var(--line); padding: 1.8rem 0; }
.after-install h2 { font-size: 1.1rem; line-height: 1.8; }
.after-install p { color: var(--muted); }
.after-install .secondary { grid-column: 2; margin-top: .65rem; font-size: .875rem; }
.file-details { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: .5rem 0; margin-bottom: 2rem; }
.file-details summary { padding: .75rem 0; min-height: 48px; color: var(--muted); cursor: pointer; font-size: .875rem; }
.file-details summary::marker { color: #397055; }
.file-details dl { margin: .5rem 0 1.2rem; font-size: .875rem; }
.file-details dl > div { display: grid; grid-template-columns: 12rem minmax(0, 1fr); gap: .4rem 1rem; margin-block: .5rem; }
.file-details dt { color: var(--muted); }
.file-details dd { margin: 0; overflow-wrap: anywhere; }
.file-details code { font: inherit; font-family: ui-monospace, Consolas, monospace; }
.site-footer { display: flex; justify-content: space-between; gap: 1rem 3rem; padding-bottom: 2rem; color: var(--muted); font-size: .75rem; }
.site-footer > span { flex: 0 0 auto; font-weight: 600; }
@media (max-width: 900px) {
  .wrap { width: min(100% - 3rem, 1060px); }
  .download-section { grid-template-columns: 1fr 370px; gap: 2rem; }
  .download-card { padding: 1.5rem; }
  .scope-note { grid-template-columns: 1fr; gap: .35rem; }
  .section-heading { align-items: flex-start; flex-direction: column; gap: .4rem; }
  .section-heading > p { max-width: none; }
  .steps { gap: 1.25rem; }
  .after-install { grid-template-columns: 11rem 1fr; }
}
@media (max-width: 700px) {
  .wrap { width: min(100% - 2.25rem, 480px); }
  .site-header { min-height: 76px; }
  .brand { font-size: 1.25rem; gap: .55rem; }
  .brand img { width: 32px; height: 32px; }
  .platform { font-size: .75rem; }
  .platform span { margin-inline: .25rem; }
  .download-section { grid-template-columns: 1fr; gap: 1.4rem; padding: 1.6rem 0; }
  .intro .eyebrow { display: none; }
  h1 { margin: 0 0 .6rem; font-size: 2.05rem; line-height: 1.35; }
  h1 br { display: none; }
  .intro-text { font-size: 1rem; line-height: 1.75; }
  .signal { display: none; }
  .download-card { padding: 1.4rem; border-radius: 18px; }
  .card-top img { width: 48px; height: 48px; border-radius: 12px; }
  .card-top h2 { font-size: 1.3rem; }
  .release-info { margin: 1rem 0 1.2rem; padding-top: .6rem; }
  .release-info div { margin-block: .2rem; }
  .download-button { min-height: 58px; gap: .5rem; }
  .scope-note { padding: 1rem 1.1rem; }
  .install-section { padding: 2.4rem 0; }
  .section-heading h2 { font-size: 1.35rem; }
  .steps { grid-template-columns: 1fr; gap: 1.5rem; }
  .steps li { display: grid; grid-template-columns: 2.1rem minmax(0, 1fr); gap: .25rem .6rem; }
  .step-number { grid-row: 1 / 3; padding-top: .2rem; }
  .steps h3 { margin: .1rem 0 .25rem; }
  .steps p { grid-column: 2; }
  .install-help { margin-top: 1.5rem; }
  .after-install { grid-template-columns: 1fr; gap: .7rem; padding-block: 1.5rem; }
  .after-install .secondary { grid-column: 1; margin: 0; }
  .file-details dl > div { grid-template-columns: 1fr; gap: .1rem; margin-block: .8rem; }
  .site-footer { flex-direction: column; gap: .3rem; }
}
@media (prefers-reduced-motion: reduce) {
  .download-button { transition: none; }
}