:root {
  --forest-950: #102c25;
  --forest-900: #173f35;
  --forest-700: #2d6a58;
  --mint-300: #a8dfc4;
  --mint-100: #e3f5ea;
  --cream: #fff9ed;
  --paper: #fffcf7;
  --ink: #18302a;
  --muted: #667a73;
  --line: #dfe8e2;
  --max-width: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", "Noto Sans JP", system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 100; border-radius: 10px; background: white; padding: 12px 16px; box-shadow: 0 10px 30px rgb(0 0 0 / 15%); }
.skip-link:focus { top: 16px; }
.section-shell { width: min(var(--max-width), calc(100% - 48px)); margin-inline: auto; }
.section-block { padding-block: 116px; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 20px; color: var(--forest-700); font-size: 11px; font-weight: 900; letter-spacing: .18em; }
.eyebrow span { width: 24px; height: 2px; border-radius: 99px; background: var(--mint-300); }
.eyebrow-light { color: var(--mint-300); }
h1, h2, h3, p { margin-top: 0; }
h2 { margin-bottom: 0; font-size: clamp(34px, 4.2vw, 56px); line-height: 1.28; letter-spacing: -.045em; }

.site-header { position: absolute; z-index: 20; top: 0; left: 50%; width: min(var(--max-width), calc(100% - 48px)); height: 94px; transform: translateX(-50%); display: flex; align-items: center; justify-content: space-between; gap: 36px; transition: top .25s ease, height .25s ease, background .25s ease, box-shadow .25s ease; }
.site-header.is-scrolled { position: fixed; top: 10px; height: 70px; padding-inline: 18px; border: 1px solid rgb(223 232 226 / 85%); border-radius: 22px; background: rgb(255 252 247 / 88%); box-shadow: 0 12px 35px rgb(16 44 37 / 10%); backdrop-filter: blur(18px); }
.brand { display: inline-flex; align-items: center; gap: 11px; font-size: 19px; font-weight: 950; letter-spacing: -.02em; }
.brand img { border-radius: 13px; box-shadow: 0 7px 18px rgb(16 44 37 / 14%); }
.site-header nav { display: flex; gap: 32px; margin-left: auto; }
.site-header nav a { color: var(--muted); font-size: 13px; font-weight: 800; transition: color .2s ease; }
.site-header nav a:hover, .site-header nav a:focus-visible { color: var(--forest-900); }
.header-cta { border: 1px solid var(--forest-900); border-radius: 999px; background: var(--forest-900); color: white; padding: 11px 18px; font-size: 12px; font-weight: 900; transition: transform .2s ease, box-shadow .2s ease; }
.header-cta:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgb(23 63 53 / 18%); }

.hero { min-height: 820px; display: grid; grid-template-columns: minmax(0, .95fr) minmax(420px, 1.05fr); align-items: center; gap: 52px; padding-top: 126px; padding-bottom: 82px; }
.hero-copy { position: relative; z-index: 2; }
.hero h1 { margin-bottom: 25px; font-size: clamp(44px, 5.4vw, 72px); line-height: 1.18; letter-spacing: -.065em; }
.hero h1 em { color: var(--forest-700); font-style: normal; }
.hero-lead { max-width: 610px; margin-bottom: 32px; color: var(--muted); font-size: 17px; line-height: 1.95; font-weight: 600; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button { display: inline-flex; min-height: 56px; align-items: center; justify-content: center; gap: 16px; border-radius: 17px; padding: 0 23px; font-size: 14px; font-weight: 900; transition: transform .2s ease, box-shadow .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--forest-900); color: white; box-shadow: 0 14px 30px rgb(23 63 53 / 20%); }
.button-primary span { color: var(--mint-300); font-size: 20px; }
.button-secondary { border: 1px solid var(--line); background: white; }
.trust-list { display: flex; flex-wrap: wrap; gap: 20px; margin: 26px 0 0; padding: 0; list-style: none; color: var(--muted); font-size: 12px; font-weight: 800; }
.trust-list span { display: inline-grid; width: 20px; height: 20px; place-items: center; margin-right: 5px; border-radius: 50%; background: var(--mint-100); color: var(--forest-700); }

.hero-visual { position: relative; min-height: 650px; }
.hero-visual::before { content: ""; position: absolute; inset: 12% -10% 2% 4%; border-radius: 48% 52% 45% 55%; background: var(--mint-100); }
.loop-mark { position: absolute; z-index: 0; top: 2%; right: 0; color: var(--mint-300); font-size: 290px; line-height: 1; opacity: .43; transform: rotate(-18deg); }
.phone { position: relative; overflow: hidden; border: 9px solid var(--forest-950); border-radius: 46px; background: var(--cream); box-shadow: 0 34px 70px rgb(16 44 37 / 20%); }
.phone img { width: 100%; height: auto; }
.phone-speaker { position: absolute; z-index: 2; top: 10px; left: 50%; width: 76px; height: 19px; transform: translateX(-50%); border-radius: 999px; background: var(--forest-950); }
.phone-front { position: absolute; z-index: 3; top: 4%; right: 3%; width: min(330px, 58%); }
.phone-back { position: absolute; z-index: 1; bottom: 2%; left: 1%; width: min(255px, 47%); transform: rotate(-8deg); opacity: .9; }
.floating-note { position: absolute; z-index: 5; display: flex; align-items: center; gap: 10px; border: 1px solid rgb(255 255 255 / 70%); border-radius: 18px; background: rgb(255 255 255 / 88%); box-shadow: 0 15px 40px rgb(16 44 37 / 15%); backdrop-filter: blur(14px); }
.note-top { top: 18%; left: 0; flex-direction: column; align-items: flex-start; padding: 16px 20px; }
.note-top strong { font-size: 18px; }
.note-top span { color: var(--muted); font-size: 11px; font-weight: 700; }
.note-bottom { right: 0; bottom: 12%; padding: 15px 18px; font-size: 12px; }
.note-icon { display: grid; width: 28px; height: 28px; place-items: center; border-radius: 50%; background: var(--forest-900); color: white; }

.intro-strip { background: var(--forest-900); color: white; }
.intro-grid { min-height: 215px; display: grid; grid-template-columns: .7fr 1.5fr .9fr; align-items: center; gap: 44px; }
.intro-kicker { margin: 0; color: var(--mint-300); font-size: 10px; font-weight: 900; letter-spacing: .17em; }
.intro-statement { margin: 0; font-size: 25px; line-height: 1.65; font-weight: 600; }
.intro-statement strong { color: var(--mint-300); }
.intro-detail { margin: 0; color: #cfe2da; font-size: 13px; line-height: 1.9; }

.section-heading { max-width: 720px; margin-bottom: 52px; }
.section-heading > p:last-child { margin: 20px 0 0; color: var(--muted); font-size: 15px; line-height: 1.9; }
.section-heading-row { max-width: none; display: flex; align-items: flex-end; justify-content: space-between; gap: 60px; }
.section-heading-row > p:last-child { max-width: 430px; margin-bottom: 4px; }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.feature-card { min-height: 365px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 28px; background: white; padding: 28px; transition: transform .25s ease, box-shadow .25s ease; }
.feature-card:hover { transform: translateY(-5px); box-shadow: 0 20px 50px rgb(16 44 37 / 9%); }
.feature-number { color: var(--muted); font-size: 10px; font-weight: 900; letter-spacing: .14em; }
.feature-symbol { width: 60px; height: 60px; display: grid; place-items: center; margin: 32px 0 auto; border-radius: 19px; font-size: 26px; font-weight: 800; }
.tone-blue .feature-symbol { background: #eaf5fb; color: #559bc9; }
.tone-orange .feature-symbol { background: #fff2e4; color: #dd8737; }
.tone-pink .feature-symbol { background: #fceef4; color: #b55f85; }
.tone-green .feature-symbol { background: var(--mint-100); color: var(--forest-700); }
.feature-card h3 { margin: 28px 0 12px; font-size: 19px; line-height: 1.5; letter-spacing: -.03em; }
.feature-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.9; }

.how { overflow: hidden; background: var(--forest-950); color: white; }
.how-grid { min-height: 760px; display: grid; grid-template-columns: .9fr .8fr .8fr; align-items: center; gap: 60px; }
.how-copy > p:last-child { margin-top: 24px; color: #c9dbd4; line-height: 1.9; }
.step-list { margin: 0; padding: 0; list-style: none; }
.step-list li { display: flex; gap: 18px; padding: 24px 0; border-bottom: 1px solid rgb(255 255 255 / 12%); }
.step-list li > span { flex: 0 0 auto; display: grid; width: 35px; height: 35px; place-items: center; border-radius: 50%; background: var(--mint-300); color: var(--forest-950); font-size: 12px; font-weight: 950; }
.step-list strong { font-size: 16px; }
.step-list p { margin: 7px 0 0; color: #a9c1b8; font-size: 12px; line-height: 1.7; }
.how-phone { width: 310px; transform: rotate(4deg); }

.screens { overflow: hidden; }
.screen-gallery { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); align-items: start; gap: 20px; min-width: 0; }
.screen-gallery figure { min-width: 0; max-width: 100%; margin: 0; }
.screen-shot { width: 100%; aspect-ratio: 900 / 1949; overflow: hidden; border: clamp(4px, .6vw, 7px) solid var(--forest-950); border-radius: clamp(22px, 3vw, 34px); background: white; box-shadow: 0 20px 50px rgb(16 44 37 / 12%); }
.screen-shot img { width: 100%; height: 100%; object-fit: contain; }
.screen-gallery figure:nth-child(even) { transform: translateY(36px); }
.screen-gallery figcaption { display: flex; flex-direction: column; gap: 5px; padding: 18px 6px 0; }
.screen-gallery figcaption strong { font-size: 15px; }
.screen-gallery figcaption span { color: var(--muted); font-size: 11px; }

.privacy { padding-top: 150px; }
.privacy-card { position: relative; overflow: hidden; min-height: 560px; display: grid; grid-template-columns: 1fr .75fr; align-items: center; gap: 80px; border-radius: 44px; background: var(--forest-900); color: white; padding: 80px; }
.privacy-card::after { content: ""; position: absolute; right: -130px; top: -150px; width: 480px; height: 480px; border: 90px solid rgb(168 223 196 / 8%); border-radius: 50%; }
.privacy-copy, .privacy-list { position: relative; z-index: 1; }
.privacy-copy > p:last-child { max-width: 560px; margin: 25px 0 0; color: #cde0d8; font-size: 15px; line-height: 2; }
.privacy-list { margin: 0; padding: 0; list-style: none; }
.privacy-list li { display: flex; align-items: center; gap: 17px; padding: 20px 0; border-bottom: 1px solid rgb(255 255 255 / 13%); }
.privacy-list span { color: var(--mint-300); font-size: 10px; font-weight: 900; }
.privacy-list strong { font-size: 14px; }
.privacy-orbit { position: absolute; left: -65px; bottom: -125px; display: grid; width: 320px; height: 320px; place-items: center; border: 58px solid rgb(168 223 196 / 9%); border-radius: 50%; color: var(--mint-300); font-size: 66px; opacity: .65; }

.about { padding-top: 20px; }
.about-card { display: grid; grid-template-columns: clamp(88px, 10vw, 120px) minmax(0, 1fr) clamp(190px, 20vw, 220px); align-items: center; gap: clamp(22px, 3vw, 34px); border: 1px solid var(--line); border-radius: 32px; background: white; padding: clamp(28px, 4vw, 40px); }
.about-card > div { min-width: 0; }
.about-icon { width: 100%; aspect-ratio: 1; }
.about-icon img { width: 100%; height: 100%; object-fit: contain; border-radius: clamp(20px, 2.5vw, 28px); box-shadow: 0 17px 40px rgb(16 44 37 / 16%); }
.about-card h2 { font-size: clamp(28px, 3vw, 40px); }
.about-card p:last-child { max-width: 650px; margin: 15px 0 0; color: var(--muted); font-size: 13px; line-height: 1.9; }
.release-links { display: grid; gap: 10px; }
.release-badge { min-width: 0; border-radius: 20px; background: var(--mint-100); padding: 16px 18px; }
.release-badge span, .release-badge strong { display: block; }
.release-badge span { margin-bottom: 5px; color: var(--forest-700); font-size: 9px; font-weight: 900; letter-spacing: .13em; }
.release-badge strong { font-size: 15px; }
.release-badge-ios { background: var(--forest-900); color: white; transition: transform .2s ease, box-shadow .2s ease; }
.release-badge-ios > span { color: var(--mint-300); }
.release-badge-ios strong span { display: inline; color: var(--mint-300); }
.release-badge-ios:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgb(23 63 53 / 18%); }

.faq { padding-top: 40px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 26px 4px; list-style: none; font-size: 16px; font-weight: 900; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span { display: grid; width: 34px; height: 34px; place-items: center; border-radius: 50%; background: var(--mint-100); color: var(--forest-700); font-size: 20px; transition: transform .2s ease; }
.faq-list details[open] summary span { transform: rotate(45deg); }
.faq-list details p { max-width: 760px; margin: -5px 0 26px; color: var(--muted); font-size: 14px; line-height: 1.9; }

.closing { padding-bottom: 60px; }
.closing-card { position: relative; overflow: hidden; min-height: 470px; display: flex; flex-direction: column; align-items: center; justify-content: center; border-radius: 44px; background: linear-gradient(135deg, #e7f7ed, #fff9ed 62%); text-align: center; }
.closing-card p { margin-bottom: 16px; color: var(--forest-700); font-size: 12px; font-weight: 900; letter-spacing: .14em; }
.closing-card h2 { position: relative; z-index: 1; font-size: clamp(40px, 5.4vw, 68px); }
.closing-actions { position: relative; z-index: 1; display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 12px; margin-top: 28px; }
.closing-status { border: 1px solid var(--line); border-radius: 999px; background: rgb(255 255 255 / 70%); padding: 12px 19px; color: var(--muted); font-size: 11px; font-weight: 900; }
.closing-loop { position: absolute; top: -150px; right: -20px; color: white; font-size: 560px; line-height: 1; opacity: .7; }
.site-footer { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 36px; padding-block: 34px; border-top: 1px solid var(--line); }
.site-footer p { margin: 0; color: var(--muted); font-size: 11px; text-align: center; }
.site-footer small { color: var(--muted); font-size: 10px; }
.footer-meta { display: flex; flex-direction: column; align-items: flex-end; gap: 10px; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px 16px; }
.footer-links a { color: var(--muted); font-size: 11px; font-weight: 800; text-decoration: underline; text-decoration-color: transparent; text-underline-offset: 4px; transition: color .2s ease, text-decoration-color .2s ease; }
.footer-links a:hover,
.footer-links a:focus-visible { color: var(--forest-900); text-decoration-color: currentColor; }
.disclaimer { margin-bottom: 24px; color: var(--muted); font-size: 9px; text-align: center; }

html.js [data-reveal] { opacity: 0; transform: translateY(20px); transition: opacity .7s ease, transform .7s ease; }
html.js [data-reveal].is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 960px) {
  .site-header nav { display: none; }
  .hero { grid-template-columns: 1fr 1fr; min-height: 750px; gap: 20px; }
  .hero h1 { font-size: 50px; }
  .hero-visual { min-height: 570px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-card { min-height: 330px; }
  .how-grid { grid-template-columns: 1fr 1fr; padding-block: 100px; }
  .how-phone { display: none; }
  .privacy-card { padding: 60px 46px; gap: 45px; }
}

@media (max-width: 720px) {
  .section-shell { width: min(100% - 32px, var(--max-width)); }
  .section-block { padding-block: 82px; }
  .site-header { width: calc(100% - 32px); height: 80px; }
  .site-header.is-scrolled { top: 8px; height: 64px; }
  .site-header .brand img { width: 42px; height: 42px; }
  .site-header .brand span { font-size: 17px; }
  .header-cta { padding: 10px 13px; font-size: 10px; }
  .hero { min-height: 0; grid-template-columns: 1fr; padding-top: 124px; padding-bottom: 60px; }
  .hero h1 { font-size: clamp(40px, 12vw, 56px); }
  .hero-lead { font-size: 15px; }
  .hero-visual { min-height: 590px; margin-top: 10px; }
  .phone-front { right: 5%; width: min(305px, 64vw); }
  .phone-back { left: 2%; width: min(220px, 46vw); }
  .note-top { left: -2%; }
  .note-bottom { right: -2%; }
  .intro-grid { min-height: 0; grid-template-columns: 1fr; gap: 15px; padding-block: 50px; }
  .intro-statement { font-size: 22px; }
  .section-heading-row { display: block; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 310px; }
  .how-grid { min-height: 0; grid-template-columns: 1fr; gap: 35px; padding-block: 82px; }
  .screens { overflow: visible; }
  .screen-gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 14px; overflow: visible; margin: 0; padding: 0; }
  .screen-gallery figure { width: 100%; min-width: 0; }
  .screen-gallery figure:nth-child(even) { transform: none; }
  .privacy { padding-top: 110px; }
  .privacy-card { min-height: 0; grid-template-columns: 1fr; gap: 40px; border-radius: 30px; padding: 52px 28px; }
  .about-card { grid-template-columns: clamp(72px, 16vw, 88px) minmax(0, 1fr); gap: 20px; padding: 27px; }
  .about-icon { align-self: start; }
  .about-card .eyebrow { display: none; }
  .about-card h2 { font-size: 27px; }
  .release-links { grid-column: 1 / -1; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .closing-card { min-height: 430px; border-radius: 30px; padding-inline: 20px; }
  .site-footer { grid-template-columns: 1fr auto; }
  .site-footer p { display: none; }
}

@media (max-width: 460px) {
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .trust-list { gap: 11px; }
  .hero-visual { min-height: 520px; }
  .phone-front { width: 260px; }
  .phone-back { width: 178px; }
  .note-top { top: 20%; padding: 12px 15px; }
  .note-top strong { font-size: 14px; }
  .note-bottom { bottom: 10%; padding: 11px 13px; }
  .screen-gallery { grid-template-columns: 1fr; gap: 30px; }
  .screen-gallery figure { width: min(100%, 340px); justify-self: center; }
  .about-card { grid-template-columns: clamp(64px, 20vw, 80px) minmax(0, 1fr); gap: 16px; padding: 22px; }
  .about-card h2 { font-size: 24px; }
  .release-links { grid-template-columns: 1fr; }
  .closing-actions { width: min(100%, 320px); }
  .site-footer { grid-template-columns: 1fr; align-items: start; gap: 22px; }
  .footer-meta { align-items: flex-start; }
  .footer-links { justify-content: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}