:root {
  color-scheme: light;
  --ink: #142438;
  --muted: #53645b;
  --green: #245c45;
  --soft: #f0f5ef;
  --line: #dce5dc;
  --font: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-family: var(--font);
  color: var(--ink);
  background: #fff;
  font-synthesis: none;
  -webkit-text-size-adjust: 100%;
}
* { box-sizing: border-box; }
body { margin: 0; min-width: 0; background: #fff; font-size: 16px; line-height: 1.8; }
h1, h2, h3, p, figure { margin: 0; }
a { color: inherit; text-underline-offset: 4px; }
img { display: block; max-width: 100%; }
.prose figure { margin: 32px 0; }
.prose figure img { width: 100%; height: auto; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--green); outline-offset: 5px; }
.wrap { width: min(1120px, calc(100% - 96px)); margin-inline: auto; }
.skip { position: fixed; top: 10px; left: 12px; z-index: 50; padding: 10px 18px; background: #fff; transform: translateY(-180%); border-radius: 12px; }
.skip:focus { transform: none; }
.site-header { position: sticky; top: 0; z-index: 20; background: rgb(255 255 255 / 94%); border-bottom: 1px solid var(--line); -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px); }
.header-row { min-height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; }
.wordmark { width: 152px; height: auto; }
.header-nav { display: flex; align-items: center; gap: 30px; font-size: 14px; font-weight: 600; }
.header-nav a { text-decoration: none; display: inline-flex; align-items: center; min-height: 44px; }
.header-nav a[aria-current="page"] { text-decoration: underline; }
.header-nav .nav-cta { min-height: 46px; padding: 9px 20px; gap: 18px; color: #fff; background: var(--ink); border-radius: 999px; }
svg { width: 18px; height: 18px; flex: 0 0 auto; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.button { min-height: 56px; padding: 14px 26px; display: inline-flex; align-items: center; justify-content: center; gap: 32px; color: #fff; background: var(--ink); border: 1px solid rgb(255 255 255 / 20%); border-radius: 999px; font-size: 15px; font-weight: 600; text-decoration: none; }
.button:hover, .nav-cta:hover { background: #254333; }
.button, .nav-cta { transition: transform .22s ease, opacity .22s ease, background-color .22s ease; }
.button:active, .nav-cta:active { transform: scale(.98); opacity: .82; }
.button svg, .nav-cta svg, .text-link svg { transition: transform .22s ease; }
@media (hover: hover) {
  .button:hover svg, .nav-cta:hover svg, .text-link:hover svg { transform: translateX(3px); }
}
.text-link { display: inline-flex; align-items: center; gap: 13px; min-height: 44px; color: var(--green); font-size: 14px; font-weight: 600; text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.eyebrow { color: var(--green); font-size: 13px; font-weight: 600; }
.hero, .page-intro { background: linear-gradient(rgb(255 255 255 / 68%), rgb(255 255 255 / 68%)), url('/assets/app-background.png') center 38% / cover; }
.hero-grid { min-height: 568px; padding-block: 76px; display: grid; grid-template-columns: minmax(0, 1.06fr) minmax(0, 1fr); gap: 60px; align-items: center; }
.hero h1 { font-size: clamp(28px, 3.4vw, 42px); line-height: 1.3; font-weight: 650; letter-spacing: -.045em; white-space: nowrap; }
.hero-copy { margin-top: 27px; font-size: 16px; line-height: 2; }
.actions { margin-top: 32px; display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; }
.hero-demo { width: 100%; min-width: 0; }
.reader-hint { min-height: 26px; margin-top: 18px; text-align: center; color: var(--muted); font-size: 13px; }
.languages { display: flex; justify-content: center; gap: 24px; margin-top: 8px; color: var(--muted); font-size: 12px; }
.languages a { display: inline-flex; align-items: center; min-height: 44px; }
.languages a:hover { color: var(--green); }
.languages a[aria-current] { color: var(--green); font-weight: 600; }
.reader-shot { padding: 28px 22px 22px; background: rgb(255 255 255 / 72%); border: 1px solid rgb(255 255 255 / 90%); border-radius: 28px; }
.reader-shot iframe { display: block; width: 100%; height: 220px; border: 0; }
.reading-sheet iframe { display: block; width: 100%; height: min(340px, calc(100svh - 120px)); border: 0; }
.hero-copy-block, .page-intro > .wrap { animation: content-enter .65s cubic-bezier(.2,.7,.2,1) both; }
.hero .reader-shot { animation: content-enter .8s .09s cubic-bezier(.2,.7,.2,1) both; }
@keyframes content-enter {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
.section { padding-block: 96px; }
h2 { font-size: clamp(28px, 3vw, 36px); line-height: 1.5; font-weight: 600; letter-spacing: -.025em; }
.section-heading h2, .detail-copy h2 { text-wrap: balance; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; }
.flow { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 48px; margin-top: 48px; }
.flow-item { border-top: 1px solid var(--line); padding-top: 24px; }
.step-no { font-size: 13px; color: var(--green); font-variant-numeric: tabular-nums; }
.flow-item h3 { margin-top: 18px; font-size: 20px; font-weight: 600; }
.flow-item .feature-status { display: inline-block; margin-top: 6px; }
.flow-item p { margin-top: 13px; font-size: 14px; color: var(--muted); line-height: 2; }
.detail-section { background: var(--soft); }
.detail-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 90px; align-items: center; }
.detail-copy h2 { margin-top: 16px; }
.detail-copy > p:not(.eyebrow) { margin-top: 24px; color: var(--muted); font-size: 15px; line-height: 2; }
.detail-copy .text-link { margin-top: 22px; }
.detail-demo { width: min(100%, 400px); min-width: 0; justify-self: center; }
.privacy-section { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 90px; }
.privacy-section h2 { margin-top: 16px; }
.privacy-section > div:last-child { padding-top: 32px; }
.privacy-section > div:last-child p { color: var(--muted); font-size: 15px; line-height: 2; margin-bottom: 22px; }
.bottom-invitation { padding-block: 64px; background: var(--soft); text-align: center; }
.bottom-invitation p { color: var(--muted); font-size: 14px; margin-top: 12px; }
.bottom-invitation .button { margin-top: 26px; }
.page-intro { padding-block: 56px; }
.page-intro h1 { margin-top: 18px; font-size: clamp(30px, 4vw, 46px); font-weight: 600; line-height: 1.45; letter-spacing: -.03em; overflow-wrap: anywhere; }
.page-intro .lead { margin-top: 18px; color: var(--muted); max-width: 720px; font-size: 15px; }
.updated { display: block; margin-top: 20px; font-size: 12px; color: var(--muted); }
.document-grid { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 80px; align-items: start; padding-block: 56px 88px; }
.contents { position: sticky; top: 118px; font-size: 13px; color: var(--muted); }
.contents-title { font-size: 13px; font-weight: 600; color: var(--green); margin-bottom: 13px; }
.contents a { display: block; min-height: 44px; padding-block: 11px; border-bottom: 1px solid var(--line); text-decoration: none; line-height: 1.8; }
.contents a:hover { color: var(--green); }
.contents-toggle { display: none; }
.contents-toggle summary { display: flex; justify-content: space-between; align-items: center; gap: 20px; color: var(--green); font-size: 14px; font-weight: 600; cursor: pointer; list-style: none; }
.contents-toggle summary::-webkit-details-marker { display: none; }
.contents-toggle summary::after { content: '+'; font-size: 22px; line-height: 1.2; }
.contents-toggle[open] summary::after { content: '−'; }
.contents-toggle[open] nav { margin-top: 12px; animation: content-enter .25s ease both; }
.prose { font-size: 15px; line-height: 2; overflow-wrap: anywhere; }
.prose h2 { font-size: 23px; line-height: 1.6; padding-top: 36px; margin-block: 36px 20px; border-top: 1px solid var(--line); scroll-margin-top: 118px; }
.prose h2:first-child { padding-top: 0; margin-top: 0; border-top: none; }
.prose h3 { font-size: 17px; font-weight: 600; }
.prose p { margin-bottom: 18px; }
.prose a { color: var(--green); }
.prose ul { list-style: none; padding: 0; margin-block: 20px 28px; }
.prose ul li { padding-left: 16px; border-left: 2px solid var(--line); margin-block: 14px; }
.prose ol { padding-left: 1.5em; margin-block: 20px 28px; }
.prose li { margin-block: 12px; }
.prose .notice { padding: 24px; background: var(--soft); border-radius: 20px; margin-block: 24px; font-size: 14px; }
.prose .notice p:last-child { margin-bottom: 0; }
.setup-steps { list-style: none; padding: 0 !important; counter-reset: setup; }
.setup-steps li { position: relative; counter-increment: setup; padding: 0 0 24px 48px; margin: 0 0 24px; border-bottom: 1px solid var(--line); }
.setup-steps li::before { content: '0' counter(setup); position: absolute; left: 0; top: 0; color: var(--green); font-size: 13px; font-variant-numeric: tabular-nums; }
.setup-steps h3 { margin-bottom: 8px; }
.setup-steps p { font-size: 14px; margin-bottom: 0; color: var(--muted); }
.faq details { border-bottom: 1px solid var(--line); padding-block: 20px; }
.faq summary { display: flex; justify-content: space-between; align-items: start; gap: 20px; font-size: 15px; font-weight: 600; line-height: 1.9; cursor: pointer; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; color: var(--green); font-size: 22px; line-height: 1.2; flex: 0 0 auto; }
.faq details[open] summary::after { content: '−'; }
.faq details p { margin: 16px 0 0; color: var(--muted); font-size: 14px; }
.faq details[open] p { animation: content-enter .25s ease both; }
.contact { background: var(--soft); padding: 26px; border-radius: 24px; margin-top: 24px; }
.contact .contact-mail { display: inline-block; font-size: clamp(18px, 2vw, 24px); margin-bottom: 16px; }
.contact p { font-size: 13px; color: var(--muted); }
.contact p:last-child { margin-bottom: 0; }
.demo-grid { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 80px; align-items: start; padding-block: 56px 88px; }
.demo-note { position: sticky; top: 118px; font-size: 13px; color: var(--muted); }
.demo-note h2 { font-size: 18px; color: var(--ink); }
.demo-note ol { list-style: none; counter-reset: demo; padding: 0; margin-block: 25px; }
.demo-note li { counter-increment: demo; position: relative; padding-left: 28px; margin-block: 18px; }
.demo-note li::before { content: counter(demo); position: absolute; left: 0; color: var(--green); }
.reading-hint { margin-top: 26px; font-size: 12px; line-height: 1.9; }
.reading-sheet { margin-bottom: 28px; padding: 32px; background: #fff; border: 1px solid var(--line); border-radius: 24px; }
.reading-sheet h2 { display: flex; align-items: center; gap: 14px; color: var(--green); font-size: 12px; font-weight: 400; margin-bottom: 24px; }
.reading-sheet h2 span { font-family: var(--font); font-size: 14px; font-weight: 600; color: var(--ink); }
.reading-sheet p { font-size: 19px; line-height: 1.95; margin-top: 18px; }
.reading-sheet:lang(en) p { font-family: Georgia, serif; }
.error-page { padding-block: 100px; min-height: 60vh; }
.error-code { color: var(--green); font-size: 14px; }
.error-page h1 { margin-block: 20px; font-size: clamp(30px, 4vw, 46px); line-height: 1.5; }
.error-page p:not(.error-code) { color: var(--muted); margin-bottom: 30px; }
.site-footer { padding-block: 48px 26px; background: #fff; border-top: 1px solid var(--line); }
.footer-top { display: flex; align-items: start; justify-content: space-between; gap: 40px; }
.footer-brand .wordmark { width: 137px; }
.footer-brand p { margin-top: 18px; color: var(--muted); font-size: 12px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 12px 25px; font-size: 12px; }
.footer-nav a { display: inline-flex; align-items: center; min-height: 44px; text-decoration: none; }
.footer-nav a:hover, .footer-nav a[aria-current="page"] { color: var(--green); text-decoration: underline; }
.footer-bottom { margin-top: 36px; padding-top: 22px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: 20px; font-size: 11px; color: var(--muted); }
.platforms { display: flex; flex-wrap: wrap; gap: 18px; }
@media (max-width: 1000px) {
  .wrap { width: calc(100% - 64px); }
  .hero-grid { gap: 32px; }
  .hero h1 { font-size: clamp(24px, 3.25vw, 32px); }
  .actions { align-items: flex-start; flex-direction: column; }
  .document-grid, .demo-grid { gap: 48px; grid-template-columns: 200px minmax(0, 1fr); }
  .flow { gap: 28px; }
  .flow-item p { font-size: 13px; }
  .detail-grid, .privacy-section { gap: 48px; }
}
@media (max-width: 760px) {
  .wrap { width: calc(100% - 48px); }
  .header-row { min-height: 76px; }
  .wordmark { width: 132px; }
  .header-nav { gap: 20px; }
  .hero-grid { grid-template-columns: 1fr; gap: 26px; padding-block: 32px; }
  .hero-copy-block { display: contents; }
  .hero h1 { grid-row: 1; font-size: clamp(28px, 6vw, 42px); text-align: center; animation: content-enter .65s cubic-bezier(.2,.7,.2,1) both; }
  .hero-demo { grid-row: 2; width: min(100%, 480px); justify-self: center; }
  .hero-copy { grid-row: 3; margin-top: 0; font-size: 15px; text-align: center; animation: content-enter .65s cubic-bezier(.2,.7,.2,1) both; }
  .actions { flex-direction: row; align-items: center; }
  .reader-shot { width: min(100%, 480px); justify-self: center; }
  .section { padding-block: 64px; }
  .section-heading { display: block; }
  .flow { grid-template-columns: 1fr; gap: 28px; margin-top: 36px; }
  .flow-item { position: relative; padding: 22px 0 0 42px; }
  .flow-item .step-no { position: absolute; top: 24px; left: 0; }
  .flow-item h3 { margin-top: 0; font-size: 19px; }
  .flow-item p { font-size: 14px; }
  .detail-grid, .privacy-section { grid-template-columns: 1fr; gap: 30px; }
  .privacy-section > div:last-child { padding-top: 0; }
  .document-grid, .demo-grid { grid-template-columns: 1fr; gap: 36px; padding-block: 32px 64px; }
  .contents, .demo-note { position: static; }
  .contents { background: var(--soft); padding: 22px; border-radius: 20px; }
  .contents-desktop { display: none; }
  .contents-toggle { display: block; }
  .contents nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 22px; }
  .demo-note { padding-bottom: 28px; border-bottom: 1px solid var(--line); }
  .demo-note ol { display: flex; flex-wrap: wrap; gap: 0 28px; }
  .demo-note li { max-width: 240px; }
  .footer-top { flex-direction: column; gap: 24px; }
  .footer-nav { gap: 4px 22px; }
}
@media (max-width: 480px) {
  .wrap { width: calc(100% - 40px); }
  .header-row { min-height: 72px; gap: 12px; }
  .wordmark { width: 112px; }
  .header-nav { gap: 13px; font-size: 12px; }
  .header-nav .nav-cta { padding: 9px 14px; gap: 0; }
  .nav-cta svg { display: none; }
  .hero-grid { min-height: 0; padding-block: 28px 32px; gap: 24px; }
  .eyebrow { font-size: 12px; }
  .hero h1 { font-size: clamp(22px, 6.2vw, 28px); line-height: 1.4; }
  .section-heading h2, .detail-copy h2 { font-size: clamp(20px, 6.2vw, 28px); }
  .hero-copy { font-size: 14px; line-height: 2; margin-top: 0; }
  .actions { flex-direction: column; align-items: stretch; gap: 11px; margin-top: 24px; }
  .actions .text-link { justify-content: center; }
  .button { min-height: 54px; font-size: 14px; }
  .languages { margin-top: 8px; font-size: 12px; }
  .reader-shot { padding: 16px 12px 18px; border-radius: 24px; }
  .section { padding-block: 48px; }
  h2 { font-size: 26px; }
  .detail-copy > p:not(.eyebrow), .privacy-section > div:last-child p { font-size: 14px; }
  .flow-item { padding-left: 35px; }
  .flow-item h3 { font-size: 18px; }
  .flow-item p { font-size: 14px; }
  .bottom-invitation { padding-block: 46px; }
  .page-intro { padding-block: 36px; }
  .page-intro h1 { font-size: 30px; }
  .page-intro .lead { font-size: 13px; margin-top: 15px; }
  .contents nav { display: block; }
  .contents { padding: 18px; }
  .prose { font-size: 14px; }
  .prose h2 { font-size: 20px; scroll-margin-top: 95px; }
  .setup-steps h3 { font-size: 15px; }
  .setup-steps p, .faq details p { font-size: 13px; }
  .setup-steps li { padding-left: 36px; }
  .prose .notice, .contact { padding: 20px; }
  .contact .contact-mail { font-size: 18px; }
  .reading-sheet { padding: 24px; border-radius: 20px; }
  .reading-sheet p { font-size: 18px; }
  .site-footer { padding-block: 32px 24px; }
  .footer-bottom { align-items: flex-start; flex-direction: column; gap: 14px; margin-top: 24px; }
}
@media (max-width: 360px) {
  .header-row { gap: 8px; }
  .header-nav { gap: 8px; flex-shrink: 0; }
  .header-nav a { white-space: nowrap; }
  .reader-shot { padding-inline: 0; }
}
@media (prefers-reduced-transparency: reduce) {
  .site-header, .reader-shot { background-color: #fff; -webkit-backdrop-filter: none; backdrop-filter: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}