:root {
  color-scheme: light dark;
  --base: #f8f6f3;
  --cream: #f7f1e8;
  --sage: #5f7b5e;
  --sage-soft: #c5d4c4;
  --ink: #3a3833;
  --secondary: #625f57;
  --line: rgba(95, 123, 94, .22);
  --wash: #e8ede4;
  --glass: rgba(248, 246, 243, .9);
  --screen-edge: rgba(58, 56, 51, .1);
  --shadow: rgba(58, 56, 51, .1);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--base); color: var(--ink); font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", -apple-system, BlinkMacSystemFont, "Yu Gothic", Meiryo, sans-serif; font-size: 18px; line-height: 1.95; -webkit-font-smoothing: antialiased; }
h1, h2, h3, p, figure, ol, dl, dd { margin: 0; }
h1, h2, h3, dt { font-weight: 600; letter-spacing: -.025em; font-feature-settings: "palt"; }
h1, h2, h3 { line-height: 1.55; }
h1 { font-size: clamp(42px, 4.45vw, 64px); font-weight: 650; line-height: 1.5; letter-spacing: -.035em; }
h2 { font-size: 35px; }
h3 { font-size: 32px; }
.phrase { display: inline-block; white-space: nowrap; }
p, dd { overflow-wrap: break-word; }
a { color: var(--sage); text-decoration-thickness: 1px; text-underline-offset: .28em; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--sage); outline-offset: 5px; }
button { font: inherit; }
.wrap { width: min(1152px, calc(100% - 96px)); margin-inline: auto; }
.section { padding-block: 112px; }
.masthead { display: flex; align-items: center; gap: 32px; padding-top: 32px; }
.brand { display: flex; align-items: center; gap: 13px; font-size: 20px; font-weight: 600; letter-spacing: -.025em; }
.brand img { border-radius: 24%; box-shadow: 0 0 0 1px var(--line); }
.masthead-line { height: 1px; flex: 1; background: var(--line); position: relative; }
.masthead-line::after { content: ""; position: absolute; right: 0; top: -3px; width: 7px; height: 7px; border-radius: 50%; background: var(--sage); }
.hero { display: grid; grid-template-columns: 1.1fr 1fr; align-items: center; gap: 55px; padding-block: 68px 104px; }
.hero-copy { padding-bottom: 8px; }
.hero h1 .phrase { display: block; }
.hero-description { max-width: 27em; margin-top: 28px; color: var(--secondary); font-size: 19px; line-height: 2.05; }
.download-placement { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; margin-top: 32px; }
/* App Store の公式バッジ（Apple Marketing Tools の日本語版・無加工）。高さは 40px 以上、周りの余白はバッジの高さの 1/4 以上（ガイドライン） */
.store-badge { display: inline-block; line-height: 0; border-radius: 8px; }
.store-badge img { display: block; width: auto; height: 48px; }
.store-badge:focus-visible { outline: 2px solid var(--sage); outline-offset: 4px; }
.small { font-size: 13px; color: var(--secondary); line-height: 1.75; }
.screen-stage { position: relative; display: flex; align-items: center; justify-content: center; min-width: 0; padding: 26px; }
.screen-mount { position: relative; width: 290px; max-width: 100%; border: 1px solid var(--screen-edge); border-radius: 32px; background: #f8f6f3; box-shadow: 0 16px 32px -20px var(--shadow); }
.app-screen { display: block; width: 100%; height: auto; border-radius: 31px; }
.hero-stage { padding: 20px 42px; min-height: 660px; }
.hero-stage .screen-mount { width: 304px; }
.composition-lines { position: absolute; inset: 35px 0; pointer-events: none; }
.composition-lines i { position: absolute; display: block; background: var(--line); }
.composition-lines i:nth-child(1) { left: 16.666%; top: 0; bottom: 0; width: 1px; }
.composition-lines i:nth-child(2) { right: 16.666%; top: 0; bottom: 0; width: 1px; }
.composition-lines i:nth-child(3) { top: 33.333%; left: 0; right: 0; height: 1px; }
.composition-lines i:nth-child(4) { top: 66.666%; left: 0; right: 0; height: 1px; }
.composition-lines b { position: absolute; right: calc(16.666% - 4px); top: calc(66.666% - 4px); width: 9px; height: 9px; border-radius: 50%; background: var(--sage); box-shadow: 0 0 0 7px rgba(95, 123, 94, .07); }
.reason { display: grid; grid-template-columns: .92fr 1.08fr; gap: 104px; border-top: 1px solid var(--line); }
.reason h2 { max-width: 13em; }
.prose { color: var(--secondary); }
.prose p + p { margin-top: 22px; }
.how { padding-bottom: 0; background: var(--cream); }
.how h2 { margin-bottom: 10px; }
.steps { list-style: none; padding: 0; }
.step { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 88px; padding-block: 65px; border-bottom: 1px solid var(--line); }
.step:last-child { border-bottom: 0; padding-bottom: 90px; }
.step-copy { max-width: 465px; }
.step-number { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; margin-bottom: 24px; border-radius: 50%; background: var(--sage-soft); color: var(--ink); font-size: 18px; line-height: 1; }
.step-copy p { color: var(--secondary); margin-top: 22px; }
.step-scenes { padding-block: 72px 84px; }
.scene-figure { position: relative; padding-block: 65px; }
.scene-figure::before, .scene-figure::after { content: ""; position: absolute; left: 50%; width: 1px; height: 35px; background: var(--line); }
.scene-figure::before { top: 0; }
.scene-figure::after { bottom: 0; }
.scene-track { display: grid; grid-template-columns: 1.45fr repeat(4, 1fr); gap: 7px; padding: 8px; background: var(--glass); border: 1px solid var(--screen-edge); border-radius: 999px; }
.scene-pill { min-width: 0; padding: 11px 0; border: 0; border-radius: 999px; background: var(--cream); color: var(--ink); font-size: 16px; font-weight: 500; line-height: 1.5; text-align: center; }
.scene-pill.is-selected { background: #5f7b5e; color: #fff; }
.scenes { display: grid; grid-template-columns: .8fr 1.2fr; align-items: start; gap: 100px; }
.scene-list > div { display: grid; grid-template-columns: 110px 1fr; gap: 24px; align-items: baseline; padding-block: 26px; border-bottom: 1px solid var(--line); }
.scene-list > div:first-child { padding-top: 0; }
.scene-list > div:last-child { border-bottom: 0; padding-bottom: 0; }
.scene-list dt { font-size: 23px; color: var(--sage); }
.scene-list dd { color: var(--secondary); font-size: 17px; }
.assistance { background: var(--cream); }
.assistance-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 108px; }
.assistance h2 { max-width: 12em; }
.assistance-list { display: grid; gap: 37px; }
.assistance-list > div { padding-left: 25px; border-left: 1px solid var(--line); }
.assistance-list dt { font-size: 23px; margin-bottom: 10px; }
.assistance-list dd { color: var(--secondary); }
.features > h2 { margin-bottom: 54px; }
.feature-gallery { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 48px; }
.feature { display: flex; flex-direction: column; }
.feature-copy { flex: 1; padding-top: 25px; border-top: 1px solid var(--line); }
.feature h3 { font-size: 25px; margin-bottom: 16px; }
.feature p { font-size: 17px; line-height: 1.95; color: var(--secondary); }
.feature .screen-stage { padding: 36px 12px 0; }
.feature .screen-mount { width: 260px; border-radius: 27px; }
.feature .app-screen { border-radius: 26px; }
.privacy { background: var(--wash); }
.privacy-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 0 108px; }
.privacy-mark { grid-column: 1 / -1; height: 20px; margin-bottom: 25px; }
.privacy-mark i { display: block; width: 10px; height: 10px; border-radius: 50%; background: var(--sage); box-shadow: 0 0 0 8px rgba(95, 123, 94, .08); }
.privacy h2 { max-width: 14em; }
.text-link { display: inline-flex; align-items: center; gap: 17px; margin-top: 26px; font-size: 16px; }
.text-link i { display: inline-block; width: 8px; height: 8px; border-top: 1px solid currentColor; border-right: 1px solid currentColor; transform: rotate(45deg); }
.faq { max-width: 872px; }
.faq > h2 { margin-bottom: 32px; }
.faq-list > div { padding-block: 25px; border-bottom: 1px solid var(--line); }
.faq-list > div:last-child { border-bottom: 0; }
.faq-list dt { font-size: 21px; line-height: 1.7; margin-bottom: 9px; }
.faq-list dd { color: var(--secondary); font-size: 17px; }
.closing { padding-top: 0; padding-bottom: 80px; }
.closing-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 80px; padding: 52px 56px; background: var(--cream); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.closing h2 { font-size: 30px; max-width: 23em; }
.closing .download-placement { margin: 0; }
.footer { padding-block: 34px 48px; border-top: 1px solid var(--line); font-size: 12px; line-height: 1.9; color: var(--secondary); }
.footer-links { display: flex; flex-wrap: wrap; gap: 12px 28px; margin-bottom: 28px; }
.footer-links a { color: var(--secondary); }
.footer-bottom { display: flex; justify-content: space-between; align-items: flex-end; gap: 30px; }
@media (prefers-color-scheme: dark) {
  :root { --base: #27231f; --cream: #302c26; --sage: #9db89b; --sage-soft: #465343; --ink: #f0ece5; --secondary: #c6c0b6; --line: rgba(157, 184, 155, .25); --wash: #303b2f; --glass: rgba(39, 35, 31, .94); --screen-edge: rgba(157, 184, 155, .25); --shadow: rgba(0, 0, 0, .22); }
}
@media (prefers-reduced-motion: no-preference) {
  .hero-copy { animation: arrive .7s ease-out both; }
  .hero-stage { animation: arrive .85s .1s ease-out both; }
  @keyframes arrive { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
}
@media (max-width: 1100px) {
  .wrap { width: calc(100% - 64px); }
  .hero { gap: 28px; }
  h2 { font-size: 31px; }
  h3 { font-size: 29px; }
  .hero-stage { padding-inline: 28px; }
  .reason, .step, .scenes, .assistance-layout, .privacy-layout { column-gap: 55px; }
  .scene-pill { font-size: 14px; }
  .scene-track { gap: 4px; padding: 6px; }
  .feature-gallery { gap: 30px; }
  .closing-inner { padding-inline: 36px; gap: 35px; }
}
@media (max-width: 760px) {
  body { font-size: 17px; line-height: 1.95; }
  .wrap { width: calc(100% - 40px); }
  .section { padding-block: 72px; }
  .masthead { padding-top: 24px; gap: 24px; }
  .brand { font-size: 18px; gap: 10px; }
  .brand img { width: 38px; height: 38px; }
  .hero { grid-template-columns: 1fr; gap: 38px; padding-top: 48px; padding-bottom: 65px; }
  h1 { font-size: clamp(32px, 9.65vw, 48px); line-height: 1.5; }
  h2 { font-size: 27px; line-height: 1.65; }
  h3 { font-size: 27px; line-height: 1.65; }
  .hero-description { font-size: 17px; line-height: 2; margin-top: 23px; }
  .download-placement { margin-top: 27px; gap: 11px; }
  .store-badge img { height: 44px; }
  .small { font-size: 12px; }
  .hero-stage { min-height: 0; padding: 18px 28px; }
  .hero-stage .screen-mount { width: 268px; }
  .screen-mount { width: 268px; border-radius: 28px; }
  .app-screen { border-radius: 27px; }
  .composition-lines { inset: 28px 0; }
  .composition-lines i:nth-child(1) { left: 6%; }
  .composition-lines i:nth-child(2) { right: 6%; }
  .composition-lines b { right: calc(6% - 4px); }
  .reason, .scenes, .assistance-layout, .privacy-layout { grid-template-columns: 1fr; gap: 28px; }
  .reason h2, .assistance h2, .privacy h2 { max-width: none; }
  .prose p + p { margin-top: 18px; }
  .how { padding-bottom: 0; }
  .how h2 { margin-bottom: 0; }
  .step { grid-template-columns: 1fr; gap: 30px; padding-block: 48px; }
  .step:last-child { padding-bottom: 54px; }
  .step-number { width: 36px; height: 36px; margin-bottom: 18px; font-size: 16px; }
  .step-copy p { margin-top: 17px; }
  .step .screen-stage { padding: 10px 20px; }
  .step-scenes { gap: 28px; }
  .scene-figure { padding-block: 28px; }
  .scene-figure::before, .scene-figure::after { height: 15px; }
  .scene-track { gap: 4px; padding: 5px; }
  .scene-pill { font-size: 14px; padding-block: 12px; }
  .scene-list > div { grid-template-columns: 90px 1fr; gap: 18px; padding-block: 23px; }
  .scene-list dt { font-size: 21px; }
  .scene-list dd { font-size: 16px; }
  .assistance-layout { gap: 36px; }
  .assistance-list { gap: 30px; }
  .assistance-list > div { padding-left: 19px; }
  .assistance-list dt { font-size: 21px; line-height: 1.7; }
  .features > h2 { margin-bottom: 32px; }
  .feature-gallery { grid-template-columns: 1fr; gap: 46px; }
  .feature h3 { font-size: 25px; margin-bottom: 14px; }
  .feature-copy { padding-top: 27px; }
  .feature .screen-stage { padding-top: 28px; }
  .feature .screen-mount { width: 268px; }
  .privacy-layout { gap: 24px; }
  .privacy-mark { margin: 0; height: 13px; }
  .privacy h2 { font-size: 27px; }
  .text-link { margin-top: 23px; }
  .faq > h2 { margin-bottom: 12px; }
  .faq-list dt { font-size: 20px; }
  .faq-list dd { font-size: 16px; }
  .faq-list > div { padding-block: 24px; }
  .closing { padding-top: 0; padding-bottom: 54px; }
  .closing-inner { grid-template-columns: 1fr; gap: 27px; padding: 32px 0; background: transparent; }
  .closing h2 { font-size: 26px; line-height: 1.7; }
  .footer { padding-block: 29px 36px; }
  .footer-links { gap: 11px 20px; margin-bottom: 25px; }
  .footer-bottom { display: block; }
  .copyright { margin-top: 22px; }
}