:root { color-scheme: light; --paper: #f7f5ef; --ink: #263d36; --green: #244f46; --muted: #59665d; --line: #d7dcd2; --sage: #e7ede4; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 17px; line-height: 1.7; -webkit-text-size-adjust: 100%; }
a { color: inherit; text-underline-offset: 5px; }
a:hover { text-decoration-thickness: 2px; }
a, summary { -webkit-tap-highlight-color: #d1ddcd; }
:focus-visible { outline: 3px solid #a95532; outline-offset: 5px; border-radius: 3px; }
img { max-width: 100%; }
[lang="ja"] { font-family: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif CJK JP", serif; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-weight: 500; letter-spacing: -.035em; line-height: 1.15; text-wrap: balance; }
h1 { font-size: clamp(2.7rem, 5.5vw, 5rem); }
h2 { font-size: clamp(2rem, 3.6vw, 3.3rem); }
h3 { font-size: 1.4rem; line-height: 1.3; }
p { margin-bottom: 1.1em; }
em { font-family: Georgia, serif; font-weight: 400; }
main, .site-header, .site-footer { width: min(1160px, calc(100% - 64px)); margin-inline: auto; }
.site-header { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding-block: 28px; }
.brand { display: inline-flex; align-items: center; gap: 14px; font-size: 16px; font-weight: 650; letter-spacing: .16em; text-decoration: none; min-height: 44px; }
.brand img { border-radius: 12px; }
nav { display: flex; flex-wrap: wrap; gap: 12px 26px; }
nav a { display: inline-flex; align-items: center; min-height: 44px; text-decoration: none; font-size: .9rem; }
nav a:hover, nav a[aria-current] { text-decoration: underline; }
.eyebrow { font-size: .73rem; line-height: 1.5; letter-spacing: .15em; text-transform: uppercase; font-weight: 650; margin-bottom: 24px; }
.lead { font-size: 1.2rem; color: var(--muted); max-width: 36rem; }
.small { font-size: .85rem; color: var(--muted); }
.hero { display: grid; grid-template-columns: 1.2fr 1fr; gap: 64px; align-items: center; padding-block: 70px 100px; }
.hero h1 { margin-bottom: 30px; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 28px; margin-block: 32px 18px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 20px; min-height: 52px; padding: 12px 22px; border-radius: 8px; background: var(--green); color: white; text-decoration: none; }
.launch-label { display: inline-flex; align-items: center; min-height: 48px; border: 1px solid var(--green); border-radius: 999px; padding: 7px 20px; font-size: .9rem; }
.text-link { display: inline-flex; min-height: 44px; align-items: center; gap: 16px; }
.card-scene { padding: 18px; background: #eceade; border-radius: 48% 48% 12px 12px; }
.study-card { background: #fffef9; border-radius: 20px; padding: 30px; box-shadow: 0 15px 45px #263d3610; }
.card-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.card-top .eyebrow { font-size: .62rem; margin: 0; }
.mini-mark { font-size: 26px; }
.study-word { font-size: clamp(4rem, 7vw, 6rem); text-align: center; line-height: 1.5; margin: 32px 0 16px; letter-spacing: .12em; padding-left: .12em; }
.card-prompt { font-size: .85rem; color: var(--muted); text-align: center; }
.answer { margin-top: 30px; }
summary { cursor: pointer; min-height: 48px; }
.answer summary { padding: 12px 18px; background: var(--sage); border-radius: 10px; font-size: .9rem; }
.answer > div { padding-top: 22px; text-align: center; }
.reading { font-size: 1.5rem; margin-bottom: 6px; }
.example { font-size: 1.1rem; padding-top: 16px; margin-bottom: 8px; }
.card-foot { text-align: center; font-size: .7rem; color: var(--muted); margin: 24px 0 0; }
.scene-note { text-align: center; margin: 20px 0 4px; font-size: .85rem; color: var(--muted); }
.scene-note span { margin-right: 10px; }
.section { padding-block: 75px; border-top: 1px solid var(--line); }
.section-heading { max-width: 38rem; margin-bottom: 50px; }
.section-heading p:not(.eyebrow) { color: var(--muted); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; }
.feature-grid p { color: var(--muted); font-size: .95rem; }
.number { display: block; font-family: Georgia, serif; font-style: italic; margin-bottom: 18px; color: var(--muted); }
.quiet-panel { padding: 60px; background: var(--sage); border-radius: 20px; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; margin-bottom: 75px; }
.quiet-panel > div > p:last-child { margin-bottom: 0; }
.word-notes { align-self: center; }
.word-notes p { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 4px 16px; border-bottom: 1px solid #c5d0c2; padding-bottom: 16px; }
.word-notes p:last-child { margin-bottom: 0; }
.word-notes [lang] { font-size: 1.5rem; }
.word-notes span:last-child { font-size: .85rem; }
.access-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.access-card { padding: 40px; border: 1px solid var(--line); border-radius: 16px; }
.access-card .eyebrow { margin-bottom: 16px; }
.access-card li { padding-left: 4px; margin-block: 10px; }
.access-card ul { padding-left: 20px; }
.access-card.full { background: var(--green); color: #fffef9; border-color: var(--green); }
.full .small { color: #e0e8dc; }
.access-note { font-size: .9rem; max-width: 47rem; margin: 26px auto 0; text-align: center; color: var(--muted); }
.closing { display: flex; align-items: center; gap: 48px; padding: 50px 0 85px; }
.closing-mark { color: var(--green); font-size: 110px; line-height: 1; }
.closing h2 { font-size: 2.3rem; margin-bottom: 12px; }
.closing p { margin-bottom: 5px; color: var(--muted); }
.site-footer { display: grid; grid-template-columns: 1fr auto; gap: 30px; border-top: 1px solid var(--line); padding-block: 40px; font-size: .85rem; }
.site-footer .company { grid-column: 1 / -1; color: var(--muted); font-size: .75rem; }
.company p { margin-bottom: 4px; }
.company-disclosure { border-top: 1px solid var(--line); margin-top: 50px; padding-top: 8px; font-size: .8rem; }
.company-disclosure h2 { font-size: 1.1rem; }
.site-footer .company a { display: inline-flex; min-height: 44px; align-items: center; }
.site-footer > div > p { color: var(--muted); margin-top: 5px; }
.page-heading { max-width: 760px; margin-inline: auto; padding-block: 60px 30px; }
.page-heading h1 { font-size: clamp(2.5rem, 6vw, 4.2rem); }
.page-heading .contact { font-size: clamp(1.3rem, 4vw, 1.8rem); overflow-wrap: anywhere; }
.prose { max-width: 760px; margin-inline: auto; }
.legal { padding-bottom: 80px; }
.legal h2 { font-size: 1.5rem; margin-block: 40px 16px; }
.legal p { color: var(--muted); }
.legal .company { padding: 20px; background: var(--sage); border-radius: 10px; font-size: .9rem; }
.faq { border-bottom: 1px solid var(--line); }
.faq:first-of-type { border-top: 1px solid var(--line); }
.faq summary { padding: 22px 4px; font-size: 1.1rem; font-weight: 500; }
.faq > div { padding: 0 4px 15px; color: var(--muted); }
.support-end { max-width: 760px; margin-inline: auto; padding-block: 55px 70px; }
.support-end h2, .prose > h2 { font-size: 1.7rem; }
.draft { background: #efe2d3; color: #593d24; padding: 8px 20px; text-align: center; font-size: .8rem; }
.skip { position: absolute; top: -100px; left: 20px; z-index: 10; padding: 12px; background: white; }
.skip:focus { top: 12px; }
@media (max-width: 800px) {
  .hero { gap: 32px; }
  .hero h1 { font-size: 3rem; }
  .feature-grid { gap: 24px; }
  .quiet-panel { padding: 35px; gap: 35px; }
  .study-card { padding: 24px; }
}
@media (max-width: 640px) {
  main, .site-header, .site-footer { width: calc(100% - 40px); }
  .site-header { padding-block: 20px; gap: 12px; flex-wrap: wrap; }
  .brand { gap: 10px; font-size: 14px; }
  nav { gap: 16px; }
  .hero { grid-template-columns: 1fr; gap: 48px; padding-block: 35px 55px; }
  .hero h1 { font-size: clamp(2.5rem, 9vw, 3.4rem); }
  .lead { font-size: 1.1rem; }
  .card-scene { max-width: 440px; width: 100%; margin-inline: auto; }
  .study-word { font-size: min(5.2rem, 20vw); }
  .section { padding-block: 45px; }
  .section-heading { margin-bottom: 32px; }
  .feature-grid, .quiet-panel, .access-grid { grid-template-columns: 1fr; }
  .feature-grid { gap: 20px; }
  .number { margin-bottom: 10px; }
  .quiet-panel { padding: 30px 24px; margin-bottom: 45px; gap: 25px; }
  .access-card { padding: 28px 24px; }
  .closing { align-items: flex-start; gap: 20px; padding-block: 15px 55px; }
  .closing-mark { font-size: 65px; }
  .closing h2 { font-size: 1.8rem; }
  .site-footer { grid-template-columns: 1fr; gap: 16px; }
  .page-heading { padding-top: 32px; }
  .page-heading h1 { font-size: 2.7rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }