:root {
  color-scheme: light;
  --bg: #fff8ed;
  --surface: #ffffff;
  --ink: #183c39;
  --muted: #536662;
  --teal: #086b65;
  --deep: #104c47;
  --soft: #edf3ef;
  --coral: #f57661;
  --yellow: #ffc432;
  --line: #d9ddd4;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 1.125rem/1.7 system-ui, -apple-system, "Segoe UI", "Yu Gothic UI", sans-serif; }
a { color: var(--teal); text-underline-offset: .25em; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--teal); outline-offset: 5px; }
.wrap { max-width: 1160px; margin: auto; padding-inline: 28px; }
.skip { position: absolute; z-index: 2; left: 16px; top: -100px; background: var(--surface); padding: 12px; }
.skip:focus { top: 10px; }
header { border-bottom: 1px solid var(--line); }
nav { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 92px; flex-wrap: wrap; padding-block: 18px; }
.logo { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-size: 1.5rem; font-weight: 750; letter-spacing: -.04em; }
.logo img { border-radius: 12px; }
.logo-note { font-size: .875rem; font-weight: 500; letter-spacing: 0; color: var(--muted); }
.navlinks { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; font-size: .9375rem; }
.navlinks a { color: var(--ink); text-decoration: none; padding-block: 8px; }
.navlinks a:hover { text-decoration: underline; }
.navlinks .language { border: 1px solid #758f87; border-radius: 999px; padding: 7px 14px; }
.hero { display: grid; grid-template-columns: 1.15fr 1fr; gap: 56px; padding-block: 72px 80px; align-items: center; }
.hero > *, .grid > *, .split > * { min-width: 0; }
.eyebrow { letter-spacing: .1em; font-size: .8125rem; font-weight: 700; color: var(--teal); }
h1 { font-size: clamp(2.75rem, 6vw, 4.75rem); line-height: 1.09; letter-spacing: -.055em; margin: 22px 0 26px; }
h1 em { font-style: normal; color: var(--teal); text-decoration: underline; text-decoration-color: var(--coral); text-decoration-thickness: .07em; text-underline-offset: .12em; }
h2 { font-size: clamp(1.875rem, 3.7vw, 2.875rem); line-height: 1.25; letter-spacing: -.035em; margin: 14px 0 24px; }
h3 { font-size: 1.375rem; line-height: 1.4; margin: 12px 0; }
p { margin: 0 0 20px; }
.lead { font-size: 1.25rem; max-width: 660px; color: var(--muted); }
.actions { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; margin: 30px 0 14px; }
.button { display: inline-flex; align-items: center; gap: 20px; padding: 14px 24px; border-radius: 14px; text-decoration: none; font-weight: 650; background: var(--teal); color: white; }
.button:hover { background: var(--deep); }
.fine { font-size: .875rem; color: var(--muted); }
figure { margin: 0; }
.brand-art { text-align: center; }
.brand-art img { display: block; width: 100%; max-width: 460px; height: auto; margin-inline: auto; border-radius: 28%; }
.brand-art figcaption { font-size: .875rem; color: var(--muted); margin: 22px 0 0; }
.brand-art figcaption strong { display: block; font-size: 1rem; font-weight: 600; color: var(--ink); }
.brand-art figcaption span { display: block; margin-top: 4px; }
.section { padding-block: 76px; }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; margin-top: 40px; }
.feature { border-top: 2px solid var(--teal); padding-top: 24px; }
.feature p { color: var(--muted); font-size: 1.0625rem; }
.feature-label { font-size: .875rem; letter-spacing: .12em; font-weight: 700; }
.concept { background: var(--deep); color: white; }
.concept .lead, .concept .feature p { color: #e3eee9; }
.concept .feature:nth-child(1) { border-color: #99d4c7; }
.concept .feature:nth-child(1) .feature-label { color: #99d4c7; }
.concept .feature:nth-child(2) { border-color: var(--yellow); }
.concept .feature:nth-child(2) .feature-label { color: var(--yellow); }
.concept .feature:nth-child(3) { border-color: #ffad9a; }
.concept .feature:nth-child(3) .feature-label { color: #ffad9a; }
.badge { display: inline-block; padding: 6px 12px; border: 1px solid #99b8ac; border-radius: 30px; font-size: .875rem; margin-bottom: 12px; }
.section-heading { max-width: 760px; }
.steps .feature { border: 1px solid var(--line); background: var(--surface); border-radius: 20px; padding: 26px; }
.steps .feature p { margin-bottom: 0; }
.step-number { display: inline-grid; place-items: center; min-width: 44px; min-height: 44px; border-radius: 50%; padding: 4px; background: var(--soft); color: var(--teal); font-weight: 700; font-size: .9375rem; }
.steps .feature:nth-child(2) .step-number { background: #fff0bb; color: var(--ink); }
.steps .feature:nth-child(3) .step-number { background: #ffded4; color: var(--ink); }
.section-note { margin: 24px 0 0; }
.split { display: grid; grid-template-columns: 1.15fr 1fr; gap: 64px; align-items: center; border-block: 1px solid var(--line); }
.policy { padding: 30px; background: var(--surface); border-left: 4px solid var(--yellow); border-radius: 0 20px 20px 0; }
.policy p { font-size: 1rem; color: var(--muted); margin-bottom: 0; }
details { border-top: 1px solid var(--line); padding: 20px 0; }
summary { cursor: pointer; font-weight: 600; min-height: 44px; padding-right: 10px; }
details p { font-size: 1.0625rem; color: var(--muted); margin: 12px 0 0; max-width: 900px; }
.closing { background: var(--soft); border: 1px solid var(--line); border-top: 5px solid var(--coral); border-radius: 24px; padding: 48px; margin: 0 0 64px; }
.closing .fine { margin-bottom: 0; }
footer { border-top: 1px solid var(--line); padding-block: 30px; font-size: .875rem; }
footer .wrap { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
:lang(ja) h1 { letter-spacing: -.04em; line-height: 1.22; }
:lang(ja) h2 { letter-spacing: -.025em; line-height: 1.45; }
@media (max-width: 760px) {
  .wrap { padding-inline: 22px; }
  .hero { grid-template-columns: 1fr; gap: 32px; padding-block: 44px 52px; }
  .brand-art { max-width: 400px; margin-inline: auto; width: 100%; }
  .brand-art figcaption { margin-top: 16px; }
  .grid, .split { grid-template-columns: 1fr; gap: 28px; }
  .section { padding-block: 50px; }
  .closing { padding: 28px; }
  .navlinks { gap: 8px 18px; }
  h1 { font-size: clamp(2.4rem, 10vw, 3.625rem); }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }