:root {
  color-scheme: light;
  --paper: #f4f2ed;
  --cream: #fffcf8;
  --ink: #173d32;
  --muted: #53645b;
  --line: #c7d0c7;
  --green: #237a52;
  --link: #1f6e49;
  --deep: #174f38;
  --edge: #103d2a;
  --soft: #ddebe2;
  --content: 1240px;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 32px; }
body { margin: 0; line-height: 1.7; }
img { max-width: 100%; display: block; }
a { color: var(--link); text-underline-offset: .25em; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--link); outline-offset: 6px; border-radius: 3px; }
main:focus { outline: none; }
h1, h2, h3, p, figure, blockquote { margin: 0; }
h1, h2, h3 { text-wrap: balance; }
.wrap { width: min(var(--content), calc(100% - 112px)); margin-inline: auto; }
.skip-link { position: absolute; top: -100px; left: 20px; padding: 10px 20px; z-index: 10; background: var(--cream); }
.skip-link:focus { top: 12px; }
.site-header { min-height: 96px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.wordmark { color: var(--ink); font-size: 39px; font-weight: 850; line-height: 1.1; letter-spacing: -1.8px; text-decoration: none; }
.site-header nav { display: flex; align-items: center; gap: 36px; }
.site-header nav a { display: inline-flex; min-height: 44px; align-items: center; color: var(--ink); font-size: 15px; font-weight: 600; text-decoration: none; }
nav a[aria-current="page"] { text-decoration: underline; text-decoration-color: var(--green); text-decoration-thickness: 2px; }
.hero { width: min(1440px, calc(100% - 40px)); margin: 0 auto; padding: 44px 48px; background: var(--deep); color: var(--cream); border-radius: 32px; display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; align-items: center; }
.hero-copy { padding: 12px 0 12px 8px; }
.hero h1 { font-size: clamp(48px, 7.5vw, 104px); line-height: 1.16; letter-spacing: -.05em; font-weight: 850; white-space: nowrap; }
.hero-lead { font-size: clamp(18px, 1.65vw, 23px); line-height: 1.85; color: #e3ecdf; margin-top: 30px; }
.hero-actions { margin-top: 32px; }
.availability { color: #c3d7c5; font-size: 14px; margin-top: 18px; }
.hero-art { width: 100%; border-radius: 26px; overflow: hidden; aspect-ratio: 4 / 5; max-height: 620px; background: #f8f5eb; }
.hero-art img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 0%; }
.button { background: var(--green); color: white; min-height: 56px; padding: 15px 27px; display: inline-flex; justify-content: center; align-items: center; gap: 24px; font-size: 16px; line-height: 1.5; font-weight: 700; text-decoration: none; border-radius: 12px; box-shadow: 0 3px 0 var(--edge); transition: transform 160ms ease, background 160ms ease, box-shadow 160ms ease; }
.button svg { width: 22px; height: 22px; flex: none; }
.button:hover { background: var(--deep); }
.button:active { transform: translateY(3px); box-shadow: 0 0 0 var(--edge); }
.button-light { background: var(--cream); color: var(--deep); box-shadow: 0 3px 0 #0f3a28; }
.button-light:hover { background: #e9f0e1; }
.hero .button { min-width: 248px; min-height: 64px; font-size: 18px; }
.hero a:focus-visible, .download-band a:focus-visible { outline-color: var(--cream); }
h2 { font-size: clamp(32px, 3.8vw, 52px); line-height: 1.25; font-weight: 800; letter-spacing: -.035em; }
h3 { font-size: 20px; line-height: 1.5; font-weight: 700; }
.learning-section { padding: 74px 0 78px; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; }
.section-heading > p { font-size: 16px; line-height: 1.9; color: var(--muted); padding-bottom: 4px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 44px; margin-top: 34px; }
.feature-grid section { padding-top: 22px; border-top: 1px solid #8fa696; }
.feature-title { display: flex; gap: 15px; align-items: center; }
.feature-icon { display: flex; flex: none; align-items: center; justify-content: center; width: 46px; height: 46px; border-radius: 50%; background: var(--soft); }
.feature-icon svg { width: 23px; height: 23px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linejoin: round; stroke-linecap: round; }
.feature-grid p { margin-top: 18px; color: var(--muted); font-size: 16px; line-height: 1.85; }
.app-showcase { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 80px; background: #e3eadf; border-radius: 28px; padding: 52px 76px; }
.app-preview { width: min(100%, 285px); justify-self: center; }
.phone { display: block; border: 5px solid #294737; border-radius: 34px; overflow: hidden; background: var(--paper); box-shadow: 0 18px 38px -24px #22362b88; }
.phone img { width: 100%; height: auto; }
figcaption { font-size: 12px; color: var(--muted); margin-top: 18px; line-height: 1.8; text-align: center; }
figcaption a { display: inline-flex; align-items: center; min-height: 44px; font-size: 13px; }
.showcase-copy h2 { font-size: clamp(30px, 3.5vw, 46px); }
.showcase-copy > p { margin-top: 22px; color: var(--muted); font-size: 17px; line-height: 1.9; }
.showcase-copy blockquote { border-top: 1px solid #a8baa9; margin-top: 32px; padding-top: 30px; }
.showcase-copy blockquote > span:first-child { font-size: 26px; font-weight: 600; line-height: 1.5; }
.translation { display: block; margin-top: 8px; font-size: 20px; color: var(--link); }
.showcase-copy > .example-note { font-size: 12px; margin-top: 18px; }
.brand-note { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 80px; padding-block: 84px; }
.brand-note h2 { font-size: 38px; }
.brand-note p { color: var(--muted); font-size: 16px; line-height: 1.9; }
.brand-note .brand-equation { font-size: 29px; font-weight: 750; color: var(--ink); display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 15px; letter-spacing: -.02em; }
.brand-equation > span:nth-child(2) { color: var(--link); }
.download-band { background: var(--deep); color: var(--cream); padding: 56px 0; }
.download-band .wrap { display: flex; justify-content: space-between; align-items: center; gap: 40px; }
.download-band h2 { font-size: 42px; }
.download-band p { margin-top: 20px; font-size: 16px; color: #d6e9db; }
.download-band .button { flex: none; }
.site-footer { padding-top: 46px; padding-bottom: 24px; display: grid; grid-template-columns: 1fr auto; gap: 30px; }
.footer-brand .wordmark { font-size: 32px; }
.footer-brand p { font-size: 13px; color: var(--muted); margin-top: 12px; }
.site-footer nav { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; }
.site-footer nav a { font-size: 14px; min-height: 44px; display: inline-flex; align-items: center; color: var(--ink); text-decoration: none; }
.site-footer nav a:hover { text-decoration: underline; }
.footer-bottom { grid-column: 1 / -1; border-top: 1px solid var(--line); padding-top: 18px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; color: var(--muted); font-size: 12px; }
.download-page { display: grid; grid-template-columns: 1.1fr 1fr; align-items: center; gap: 80px; padding-block: 22px 70px; }
.download-intro { background: var(--deep); border-radius: 28px; padding: 44px; color: var(--cream); }
.app-icon { border-radius: 24px; width: 104px; height: 104px; }
.app-name { font-size: 14px; color: #c3d7c5; margin-top: 26px; }
.download-intro h1 { font-size: clamp(36px, 3.9vw, 54px); line-height: 1.25; letter-spacing: -.04em; margin-top: 14px; font-weight: 800; }
.lead { font-size: 19px; color: var(--muted); margin-top: 20px; }
.download-intro .lead { color: #e3ecdf; font-size: 17px; }
.download-status { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 34px 0; }
.status-dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; background: var(--green); vertical-align: middle; margin-right: 10px; }
.download-status h2 { display: inline; font-size: 28px; vertical-align: middle; }
.download-status p { font-size: 16px; margin-top: 20px; color: var(--muted); }
.download-status .button { margin-top: 28px; }
.download-questions { max-width: 860px; padding-bottom: 70px; }
.download-questions h2 { margin-bottom: 26px; font-size: 28px; }
details { border-bottom: 1px solid var(--line); }
summary { padding: 22px 28px 22px 0; cursor: pointer; font-size: 17px; font-weight: 600; }
details p { padding-bottom: 22px; color: var(--muted); max-width: 690px; font-size: 16px; }
.policy { padding-block: 22px 80px; }
.policy-heading { max-width: 800px; }
.back-link { display: inline-flex; min-height: 44px; align-items: center; font-size: 14px; }
.policy-heading h1 { font-size: clamp(36px, 4.5vw, 54px); line-height: 1.3; letter-spacing: -.035em; margin-top: 20px; }
.small { font-size: 13px; color: var(--muted); margin-top: 18px; }
.draft-note { margin-top: 32px; background: var(--soft); border-left: 3px solid var(--green); padding: 20px 24px; font-size: 15px; }
.draft-note p { margin-top: 6px; max-width: 830px; }
.policy-layout { display: grid; grid-template-columns: 225px minmax(0, 730px); gap: 64px; margin-top: 50px; }
.policy-toc { display: flex; flex-direction: column; gap: 2px; align-self: start; position: sticky; top: 28px; }
.policy-toc span { color: var(--muted); font-size: 13px; margin-bottom: 12px; }
.policy-toc a { padding-block: 10px; font-size: 14px; }
.policy-content section { margin-bottom: 40px; scroll-margin-top: 30px; }
.policy-content h2 { font-size: 24px; margin-bottom: 18px; }
.policy-content p, .policy-content li { font-size: 16px; line-height: 1.95; overflow-wrap: anywhere; }
.policy-content p + p { margin-top: 16px; }
.policy-content ul { padding-left: 22px; }
.policy-content li + li { margin-top: 12px; }
.storage-list { margin-bottom: 22px; }
.storage-list > div { display: grid; grid-template-columns: 170px 1fr; gap: 20px; padding-block: 16px; border-bottom: 1px solid var(--line); font-size: 15px; }
.storage-list span { color: var(--muted); }
.not-found { min-height: 60vh; padding-block: 70px; }
.not-found h1 { font-size: clamp(36px, 5vw, 64px); line-height: 1.3; }
.not-found .button { margin-top: 28px; }
@media (max-width: 1100px) {
  .wrap { width: calc(100% - 64px); }
  .hero { padding: 36px; gap: 32px; }
  .hero h1 { font-size: clamp(40px, 6.3vw, 72px); }
  .hero-copy { padding-left: 0; }
  .feature-grid { gap: 26px; }
  .feature-title { gap: 12px; }
  .feature-grid h3 { font-size: 18px; }
  .app-showcase { padding: 40px; gap: 48px; }
  .download-page { gap: 42px; }
  .download-intro { padding: 32px; }
  .policy-layout { grid-template-columns: 190px minmax(0, 1fr); gap: 40px; }
}
@media (max-width: 760px) {
  .wrap { width: calc(100% - 40px); }
  .site-header { min-height: 80px; }
  .wordmark { font-size: 32px; }
  .site-header nav { gap: 20px; }
  .site-header nav a { font-size: 13px; }
  .hero { width: calc(100% - 24px); grid-template-columns: 1fr; gap: 28px; padding: 30px 24px 24px; border-radius: 24px; }
  .hero-copy { padding: 0; }
  .hero h1 { font-size: clamp(35px, 10.7vw, 64px); line-height: 1.18; letter-spacing: -.04em; }
  .hero-lead { font-size: 16px; line-height: 1.8; margin-top: 22px; }
  .hero-actions { margin-top: 24px; }
  .button { min-height: 54px; padding-inline: 23px; font-size: 15px; }
  .availability { font-size: 12px; margin-top: 14px; }
  .hero-art { aspect-ratio: 4 / 5; max-width: 400px; max-height: none; border-radius: 18px; justify-self: center; }
  .hero-art img { object-position: center; }
  .hero .button { min-width: 0; min-height: 56px; font-size: 16px; }
  .learning-section { padding-block: 48px; }
  h2 { font-size: 34px; }
  .section-heading { display: block; }
  .section-heading > p { font-size: 14px; margin-top: 18px; }
  .section-heading > p br { display: none; }
  .feature-grid { grid-template-columns: 1fr; gap: 24px; margin-top: 28px; }
  .feature-grid section { padding-top: 20px; }
  .feature-grid h3 { font-size: 20px; }
  .feature-grid p { margin-top: 12px; font-size: 15px; }
  .feature-icon { width: 42px; height: 42px; }
  .app-showcase { grid-template-columns: 1fr; padding: 30px 24px; gap: 30px; border-radius: 22px; }
  .showcase-copy { grid-row: 1; }
  .showcase-copy h2 { font-size: 32px; }
  .showcase-copy > p { font-size: 15px; margin-top: 17px; }
  .showcase-copy blockquote { margin-top: 24px; padding-top: 22px; }
  .showcase-copy blockquote > span:first-child { font-size: 22px; }
  .translation { font-size: 18px; }
  .app-preview { width: 248px; }
  .phone { border-radius: 29px; }
  .brand-note { grid-template-columns: 1fr; gap: 26px; padding-block: 50px; }
  .brand-note h2 { font-size: 32px; }
  .brand-note p { font-size: 15px; }
  .brand-note .brand-equation { font-size: 25px; gap: 12px; }
  .download-band { padding-block: 40px 46px; }
  .download-band .wrap { display: block; }
  .download-band h2 { font-size: 36px; }
  .download-band p { font-size: 15px; }
  .download-band .button { margin-top: 26px; }
  .site-footer { padding-top: 36px; grid-template-columns: 1fr; gap: 22px; }
  .site-footer nav { gap: 20px; }
  .site-footer nav a { font-size: 13px; }
  .footer-bottom { display: grid; gap: 4px; }
  .download-page { grid-template-columns: 1fr; gap: 30px; padding-block: 10px 46px; }
  .download-intro { padding: 30px 26px; }
  .app-icon { width: 80px; height: 80px; border-radius: 18px; }
  .download-intro h1 { font-size: clamp(33px, 9vw, 44px); }
  .download-status { padding-block: 26px; }
  .download-questions { padding-bottom: 46px; }
  .download-questions h2 { font-size: 25px; }
  summary { font-size: 16px; }
  .policy { padding-block: 14px 48px; }
  .policy-heading h1 { font-size: 38px; }
  .lead { font-size: 17px; }
  .draft-note { padding: 18px; font-size: 14px; margin-top: 26px; }
  .policy-layout { display: block; margin-top: 30px; }
  .policy-toc { position: static; border-bottom: 1px solid var(--line); padding-bottom: 24px; margin-bottom: 32px; }
  .policy-toc a { min-height: 44px; }
  .policy-content h2 { font-size: 23px; }
  .storage-list > div { grid-template-columns: 1fr; gap: 4px; }
}
@media (prefers-reduced-motion: reduce) {
  .button { transition: none; }
  .button:active { transform: none; }
}
@media print {
  .site-header, .site-footer, .policy-toc, .back-link { display: none; }
  .wrap { width: 100%; }
  .policy-layout { display: block; }
  body { background: white; color: black; }
  .policy-content section { break-inside: avoid; }
}