:root {
  --ink: #153a4c;
  --ink-deep: #092b3b;
  --sky: #73d9e8;
  --aqua: #14afbd;
  --aqua-deep: #087c91;
  --sun: #ffca4d;
  --sun-deep: #f29b32;
  --leaf: #55b96d;
  --coral: #ff775e;
  --ivory: #fffaf0;
  --white: #fff;
  --shadow: 0 24px 80px rgba(17, 67, 82, .18);
  --display: "Zen Maru Gothic", sans-serif;
  --body: "M PLUS Rounded 1c", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--ivory);
  font-family: var(--body);
  font-weight: 500;
  line-height: 1.8;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img, video { display: block; max-width: 100%; }
button { font: inherit; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 100; padding: .7rem 1rem; background: #fff; border-radius: 1rem; }
.skip-link:focus { top: 1rem; }

.site-header {
  position: fixed;
  z-index: 50;
  inset: 1.25rem 2rem auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .65rem .7rem .65rem 1.1rem;
  color: #fff;
  border: 1px solid rgba(255,255,255,.28);
  border-radius: 999px;
  background: rgba(9, 54, 66, .18);
  backdrop-filter: blur(18px) saturate(1.3);
  transition: background .3s, transform .3s, box-shadow .3s;
}
.site-header.is-scrolled { background: rgba(6, 73, 84, .85); box-shadow: 0 12px 36px rgba(4, 42, 51, .18); }
.brand { display: inline-flex; align-items: center; gap: .65rem; font-family: var(--display); font-weight: 900; letter-spacing: .12em; }
.brand-flame { position: relative; width: 31px; height: 31px; border-radius: 46% 54% 58% 42% / 65% 45% 55% 35%; background: linear-gradient(145deg, #fff8a9, var(--sun)); transform: rotate(45deg); box-shadow: 0 0 20px rgba(255, 218, 91, .75); }
.brand-flame i { position: absolute; width: 12px; height: 12px; left: 8px; top: 11px; border-radius: 50%; background: #fff; }
.site-nav { display: flex; align-items: center; gap: .4rem; font-size: .8rem; font-weight: 800; letter-spacing: .06em; }
.site-nav a { padding: .55rem .9rem; border-radius: 999px; transition: background .2s, transform .2s; }
.site-nav a:hover { background: rgba(255,255,255,.14); transform: translateY(-1px); }
.site-nav .nav-cta { color: var(--ink-deep); background: #fff; }

.hero { position: relative; min-height: 100svh; display: grid; align-items: center; color: #fff; overflow: hidden; isolation: isolate; background: #137f96; }
.hero-video { position: absolute; inset: 0; z-index: -4; width: 100%; height: 100%; object-fit: cover; }
.hero-wash { position: absolute; inset: 0; z-index: -3; background: linear-gradient(90deg, rgba(4, 42, 57, .78) 0%, rgba(4, 47, 59, .48) 37%, rgba(7, 66, 72, .06) 73%), linear-gradient(0deg, rgba(5, 45, 57, .44), transparent 40%); }
.hero-content { width: min(1240px, calc(100% - 3rem)); margin: 7rem auto 4rem; }
.eyebrow, .section-kicker { margin: 0 0 1rem; font-size: .72rem; font-weight: 900; letter-spacing: .24em; }
.eyebrow { display: inline-flex; align-items: center; gap: .8rem; }
.eyebrow::before { content: ""; width: 2.8rem; height: 2px; background: var(--sun); }
.hero h1 { margin: 0; max-width: 850px; font-family: var(--display); font-size: clamp(3.1rem, 7.7vw, 7.4rem); line-height: 1.03; letter-spacing: -.06em; text-wrap: balance; text-shadow: 0 4px 30px rgba(2, 35, 45, .2); }
.hero-product-name { display: block; margin-bottom: .55rem; font-family: var(--body); font-size: clamp(.88rem, 1.5vw, 1.15rem); font-weight: 900; line-height: 1.4; letter-spacing: .12em; }
.hero h1 em { position: relative; color: #fff4a7; font-style: normal; }
.hero h1 em::after { content: ""; position: absolute; left: -.05em; right: -.05em; bottom: -.02em; height: .12em; border-radius: 999px; background: var(--coral); transform: rotate(-2deg); }
.hero-copy { margin: 1.65rem 0 1.9rem; font-size: clamp(1rem, 1.6vw, 1.25rem); font-weight: 700; letter-spacing: .04em; text-shadow: 0 2px 12px rgba(2, 33, 44, .35); }
.hero-actions { display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; }
.button, .sound-button { min-height: 56px; display: inline-flex; align-items: center; justify-content: center; gap: 1.1rem; padding: .85rem 1.45rem; border-radius: 999px; border: 0; font-weight: 900; cursor: pointer; transition: transform .2s, box-shadow .2s, background .2s; }
.button:hover, .sound-button:hover { transform: translateY(-3px); }
.button-primary { color: var(--ink-deep); background: var(--sun); box-shadow: 0 14px 35px rgba(243, 168, 47, .32); }
.button b { font-size: 1.2rem; }
.sound-button { color: #fff; border: 1px solid rgba(255,255,255,.45); background: rgba(7, 52, 65, .25); backdrop-filter: blur(14px); }
.sound-icon { display: grid; place-items: center; width: 27px; height: 27px; border-radius: 50%; color: var(--ink-deep); background: #fff; }
.release-note { display: flex; align-items: center; gap: .55rem; margin: 1.3rem 0 0; font-size: .76rem; font-weight: 700; letter-spacing: .06em; }
.release-note span { width: 7px; height: 7px; border-radius: 50%; background: #a9ffcd; box-shadow: 0 0 0 5px rgba(169,255,205,.16); }
.scroll-cue { position: absolute; right: 2.3rem; bottom: 1.5rem; display: flex; align-items: center; gap: .8rem; font-size: .58rem; font-weight: 900; letter-spacing: .2em; writing-mode: vertical-rl; }
.scroll-cue i { display: block; width: 1px; height: 46px; background: linear-gradient(#fff, transparent); animation: scroll-line 1.8s infinite; }
.hero-cloud { position: absolute; z-index: -2; width: 25vw; height: 7vw; min-width: 260px; min-height: 72px; border-radius: 50%; opacity: .24; filter: blur(3px); background: #fff; }
.hero-cloud::before, .hero-cloud::after { content: ""; position: absolute; border-radius: 50%; background: inherit; }
.hero-cloud::before { width: 48%; height: 150%; left: 16%; bottom: 0; }
.hero-cloud::after { width: 42%; height: 115%; right: 12%; bottom: 0; }
.hero-cloud-a { left: -7vw; bottom: 6vh; animation: cloud-drift 18s ease-in-out infinite; }
.hero-cloud-b { right: -8vw; top: 16vh; transform: scale(.7); animation: cloud-drift 22s ease-in-out infinite reverse; }
.hero-stars i { position: absolute; z-index: -1; width: 7px; height: 7px; border-radius: 50%; background: #fff5ae; box-shadow: 0 0 12px 4px rgba(255,242,161,.6); animation: twinkle 2.5s ease-in-out infinite; }
.hero-stars i:nth-child(1) { left: 8%; top: 27%; }
.hero-stars i:nth-child(2) { left: 44%; top: 18%; animation-delay: .5s; }
.hero-stars i:nth-child(3) { left: 70%; top: 31%; animation-delay: 1.1s; }
.hero-stars i:nth-child(4) { left: 84%; top: 68%; animation-delay: .2s; }
.hero-stars i:nth-child(5) { left: 56%; top: 75%; animation-delay: 1.5s; }
.hero-stars i:nth-child(6) { left: 22%; top: 79%; animation-delay: .8s; }

.section { position: relative; padding: clamp(5rem, 10vw, 9rem) 0; }
.section-inner { width: min(1180px, calc(100% - 3rem)); margin-inline: auto; }
.section-heading { width: min(900px, calc(100% - 3rem)); margin: 0 auto 4rem; text-align: center; }
.section-kicker { color: var(--aqua-deep); }
.section h2 { margin: 0; font-family: var(--display); font-size: clamp(2.3rem, 5vw, 4.8rem); line-height: 1.25; letter-spacing: -.045em; }
.section h2 span { color: var(--aqua); }
.heading-copy { max-width: 680px; margin: 1.5rem auto 0; }
.about-section { padding-block: clamp(4.5rem, 8vw, 7rem); background: #fff; }
.about-layout { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: clamp(3rem, 7vw, 7rem); }
.about-copy { max-width: 620px; }
.about-copy h2 { margin-bottom: 1.5rem; font-size: clamp(2.25rem, 4.3vw, 4.15rem); }
.about-copy p { color: #4d6872; }
.about-copy strong { color: var(--ink-deep); }
.about-facts { display: grid; gap: .85rem; padding: 0; margin: 0; list-style: none; }
.about-facts li { position: relative; display: grid; grid-template-columns: 7.2rem 1fr; gap: .15rem 1.15rem; align-items: center; padding: 1.25rem 1.35rem; border: 1px solid rgba(20,175,189,.16); border-radius: 1.35rem; background: linear-gradient(135deg, #f5fffc, #eef9ff); box-shadow: 0 14px 38px rgba(17,103,118,.07); }
.about-facts li > span { grid-row: 1 / span 2; color: var(--aqua-deep); font-size: .66rem; font-weight: 900; letter-spacing: .12em; }
.about-facts strong { color: var(--ink-deep); font-family: var(--display); font-size: 1.08rem; }
.about-facts small { color: #688089; font-size: .72rem; line-height: 1.65; }
.story-section { background: linear-gradient(155deg, #fffdf4 25%, #eafaf6 100%); overflow: hidden; }
.story-grid { display: grid; grid-template-columns: .78fr 1.22fr; align-items: center; gap: clamp(2rem, 6vw, 6rem); }
.story-copy p:not(.section-kicker) { max-width: 35rem; }
.story-copy h2 { margin-bottom: 1.8rem; font-size: clamp(2.3rem, 3.9vw, 4rem); }
.story-visual { position: relative; margin: 0; }
.story-visual::before { content: ""; position: absolute; inset: -9%; z-index: -1; border-radius: 50%; background: radial-gradient(circle, rgba(255,209,82,.5), transparent 65%); }
.story-visual img { aspect-ratio: 16 / 9; object-fit: cover; border: 7px solid #fff; border-radius: 48% 52% 46% 54% / 52% 43% 57% 48%; box-shadow: var(--shadow); transform: rotate(1deg); }
.story-visual figcaption { display: flex; align-items: center; gap: .7rem; margin: .8rem 1rem 0; font-size: .82rem; font-weight: 800; }
.story-visual figcaption span { color: var(--coral); }
.sun-orbit { position: absolute; left: -8vw; top: 16%; width: 26vw; aspect-ratio: 1; border: 1px dashed rgba(23,174,186,.23); border-radius: 50%; }
.sun-orbit::after { content: ""; position: absolute; right: 10%; top: 4%; width: 20px; aspect-ratio: 1; border-radius: 50%; background: var(--sun); box-shadow: 0 0 35px rgba(255,200,65,.7); }

.loop-section { background: #fff; }
.learning-loop { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center; gap: 1.2rem; }
.loop-card { position: relative; min-height: 360px; padding: 2rem; border-radius: 2rem; background: linear-gradient(160deg, #e9fbff, #c7f0f2); box-shadow: 0 18px 55px rgba(23,117,132,.1); overflow: hidden; }
.loop-card-sun { background: linear-gradient(160deg, #fff8dc, #ffdf79); }
.loop-card-green { background: linear-gradient(160deg, #e8fbe9, #a9e9b3); }
.loop-number { position: absolute; top: 1.4rem; right: 1.5rem; color: rgba(16,74,89,.28); font-size: .75rem; font-weight: 900; letter-spacing: .12em; }
.loop-card h3 { margin: 1.1rem 0 .5rem; font-family: var(--display); font-size: 1.5rem; }
.loop-card p { margin: 0; font-size: .9rem; }
.loop-icon { width: 150px; height: 150px; margin: .7rem auto 0; display: grid; place-items: center; border-radius: 44% 56% 52% 48%; color: #fff; background: var(--aqua); box-shadow: 0 14px 30px rgba(19,153,171,.25); font-family: var(--display); font-size: 4.2rem; font-weight: 900; transform: rotate(-4deg); }
.flame-icon { background: transparent; box-shadow: none; }
.flame-icon i { width: 90px; height: 110px; border-radius: 48% 52% 60% 40% / 66% 43% 57% 34%; background: linear-gradient(145deg, #fff9a2, var(--sun-deep)); box-shadow: 0 12px 45px rgba(237,153,44,.35); transform: rotate(45deg); }
.loop-monster { display: block; width: 170px; height: 170px; margin: 0 auto; filter: drop-shadow(0 15px 20px rgba(27,93,60,.18)); }
.loop-monster img { width: 100%; height: 100%; object-fit: contain; }
.loop-arrow { color: var(--sun-deep); font-size: 1.8rem; animation: twinkle 2s ease-in-out infinite; }

.learning-section { color: #fff; background: linear-gradient(135deg, #087b91 0%, #16b3b8 48%, #55c990 100%); overflow: hidden; }
.learning-sky { position: absolute; inset: 0; opacity: .42; background: radial-gradient(circle at 10% 20%, rgba(255,255,255,.35) 0 2px, transparent 3px), radial-gradient(circle at 80% 18%, rgba(255,238,150,.5) 0 3px, transparent 4px); background-size: 100px 90px, 170px 140px; }
.learning-layout { position: relative; display: grid; grid-template-columns: 1.15fr .85fr; align-items: center; gap: clamp(3rem, 7vw, 7rem); }
.section-kicker-light { color: #fff2a5; }
.learning-copy h2 span { color: #fff2a5; }
.learning-copy > p:not(.section-kicker) { max-width: 34rem; }
.device-stage { position: relative; min-height: 690px; }
.phone { position: absolute; width: 47%; aspect-ratio: 9 / 17.4; border-radius: 2rem; box-shadow: 0 28px 65px rgba(3,54,66,.36); overflow: hidden; background: #fff; }
.phone img { width: 100%; height: 100%; object-fit: cover; object-position: top center; }
.phone-main { z-index: 3; left: 27%; top: 0; transform: rotate(-2deg); }
.phone-left { z-index: 1; left: 0; top: 15%; transform: rotate(-10deg) scale(.84); }
.phone-right { z-index: 2; right: -2%; top: 17%; transform: rotate(9deg) scale(.84); }
.device-spark { position: absolute; z-index: 4; color: #fff7a8; font-size: 3rem; text-shadow: 0 0 22px rgba(255,238,130,.8); animation: twinkle 2s infinite; }
.spark-a { left: 3%; top: 5%; }
.spark-b { right: 2%; bottom: 16%; animation-delay: 1s; }
.subject-pills { display: flex; gap: .55rem; flex-wrap: wrap; padding: 0; margin: 1.7rem 0 2.2rem; list-style: none; }
.subject-pills li { padding: .38rem .85rem; border: 1px solid rgba(255,255,255,.38); border-radius: 999px; background: rgba(255,255,255,.12); font-size: .78rem; font-weight: 800; }
.stat-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; border-top: 1px solid rgba(255,255,255,.28); padding-top: 1.4rem; }
.stat-row div { min-width: 0; display: flex; flex-direction: column; }
.stat-row div + div { padding-left: 1rem; border-left: 1px solid rgba(255,255,255,.18); }
.stat-row strong { color: #fff7ad; font-family: var(--display); font-size: clamp(1.7rem, 2.7vw, 2.65rem); line-height: 1; white-space: nowrap; }
.stat-row strong span { color: inherit; font-size: .5em; }
.stat-row div > span { margin-top: .5rem; font-size: .7rem; font-weight: 800; }

.monsters-section { background: radial-gradient(circle at 50% 25%, #fff 0, #fff8e8 45%, #ebf8ef 100%); overflow: hidden; }
.evolution-stage { padding: 2rem 2.5rem 1.2rem; border: 1px solid rgba(18,126,140,.11); border-radius: 2.5rem; background: rgba(255,255,255,.74); box-shadow: var(--shadow); backdrop-filter: blur(10px); }
.evolution-track { display: grid; grid-template-columns: 1fr auto 1fr auto 1.1fr auto 1fr auto 1.2fr; align-items: center; }
.evolution-track figure { position: relative; isolation: isolate; margin: 0; text-align: center; }
.evolution-track figure::after { content: ""; position: absolute; z-index: -1; left: 12%; right: 12%; bottom: 10%; aspect-ratio: 1; border-radius: 50%; opacity: .22; background: radial-gradient(circle, rgba(255,215,84,.42), rgba(255,234,154,.08) 48%, transparent 70%); }
.evolution-track figure span { display: inline-block; padding: .2rem .55rem; border-radius: 999px; color: var(--aqua-deep); background: #e4f8f7; font-size: .62rem; font-weight: 900; }
.evolution-track picture { display: block; }
.evolution-track img { display: block; width: 100%; height: auto; aspect-ratio: 1; object-fit: contain; filter: drop-shadow(0 16px 18px rgba(21,75,70,.18)); }
.evolution-track > i { width: 8px; aspect-ratio: 1; border-radius: 50%; background: var(--sun); box-shadow: 0 0 0 5px rgba(255,203,75,.17); }
.evolution-caption { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: .9rem 0 0; border-top: 1px solid rgba(19,104,119,.12); }
.evolution-caption p { display: flex; align-items: center; gap: .7rem; margin: 0; }
.evolution-caption b { font-family: var(--display); }
.evolution-caption p span { color: #66818c; font-size: .78rem; }
.evolution-caption a { color: var(--aqua-deep); font-size: .78rem; font-weight: 900; }

.screens-section { background: #f4fbf9; overflow: hidden; }
.screens-layout { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 6vw; }
.screens-copy h2 { font-size: clamp(2.4rem, 3.7vw, 3.8rem); }
.screens-copy > p:not(.section-kicker) { max-width: 34rem; }
.feature-list { display: grid; gap: .65rem; margin-top: 2rem; }
.feature-list span { padding: .65rem 0; border-bottom: 1px solid rgba(15,99,112,.13); font-size: .86rem; font-weight: 800; }
.feature-list b { margin-right: .8rem; color: var(--coral); }
.screen-stack { position: relative; min-height: 720px; perspective: 1200px; }
.screen-card { position: absolute; top: 0; width: 44%; aspect-ratio: 9 / 17.4; margin: 0; overflow: hidden; border: 6px solid #fff; border-radius: 2rem; box-shadow: 0 30px 70px rgba(21,80,91,.2); }
.screen-card img { width: 100%; height: 100%; object-fit: cover; object-position: top center; }
.screen-card-back { left: 2%; top: 14%; transform: rotate(-10deg) scale(.84); opacity: .82; }
.screen-card-middle { right: 1%; top: 12%; transform: rotate(9deg) scale(.87); }
.screen-card-front { z-index: 3; left: 29%; transform: rotate(-1deg); }

.finale-section { min-height: 720px; display: grid; place-items: center; padding-inline: 1.5rem; color: #fff; text-align: center; overflow: hidden; isolation: isolate; }
.finale-media { position: absolute; inset: 0; z-index: -2; background: linear-gradient(rgba(8,76,83,.2), rgba(4,49,59,.72)), url("./assets/public/repeta-world.jpg") center / cover; transform: scale(1.04); }
.finale-section::before { content: ""; position: absolute; inset: 0; z-index: -1; background: radial-gradient(circle at 50% 44%, transparent 0 20%, rgba(3,45,55,.26) 72%); }
.finale-content { max-width: 900px; }
.finale-fairy { display: block; width: 170px; margin: 0 auto -1rem; filter: drop-shadow(0 18px 24px rgba(8,58,66,.3)); }
.finale-fairy img { display: block; width: 100%; height: auto; }
.finale-content h2 span { color: #fff2a7; }
.finale-content > p:not(.section-kicker) { font-weight: 700; }
.button-light { margin-top: 1.1rem; color: var(--ink-deep); background: #fff; box-shadow: 0 16px 45px rgba(0,50,60,.2); }

.faq-section { background: linear-gradient(150deg, #fffdf4, #effbf8); }
.faq-layout { display: grid; grid-template-columns: .65fr 1.35fr; align-items: start; gap: clamp(2.5rem, 7vw, 7rem); }
.faq-heading { position: sticky; top: 7rem; }
.faq-heading h2 { margin-bottom: 1rem; font-size: clamp(2.2rem, 4vw, 4rem); }
.faq-heading > p:not(.section-kicker) { max-width: 24rem; color: #5b747d; }
.faq-list { display: grid; gap: .75rem; }
.faq-list details { border: 1px solid rgba(8,124,145,.14); border-radius: 1.25rem; background: rgba(255,255,255,.82); box-shadow: 0 12px 32px rgba(17,90,104,.06); overflow: hidden; }
.faq-list summary { position: relative; padding: 1.2rem 3.2rem 1.2rem 1.35rem; color: var(--ink-deep); font-family: var(--display); font-size: .95rem; font-weight: 900; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 1.3rem; top: 50%; translate: 0 -50%; display: grid; place-items: center; width: 1.65rem; height: 1.65rem; color: var(--aqua-deep); border-radius: 50%; background: #e5f8f6; font-family: var(--body); font-size: 1.15rem; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list p { margin: 0; padding: 0 1.35rem 1.25rem; color: #58727c; font-size: .82rem; }

.voices-section { position: relative; overflow: hidden; color: #fff; background: linear-gradient(135deg, #083f50 0%, #087c87 55%, #16a99f 100%); }
.voices-section::before { content: ""; position: absolute; width: 42vw; height: 42vw; right: -14vw; top: -23vw; border: 1px solid rgba(255,255,255,.2); border-radius: 50%; box-shadow: 0 0 0 5vw rgba(255,255,255,.035), 0 0 0 11vw rgba(255,255,255,.025); }
.voices-glow { position: absolute; width: 24rem; height: 24rem; left: -8rem; bottom: -12rem; border-radius: 50%; background: rgba(255,202,77,.28); filter: blur(60px); }
.voices-layout { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: clamp(3rem, 7vw, 7rem); }
.voices-copy { max-width: 650px; }
.voices-copy h2 { color: #fff; }
.voices-copy h2 span { color: #fff2a7; }
.voices-copy > p:not(.section-kicker) { color: rgba(255,255,255,.86); }
.voices-button { margin-top: 1rem; color: var(--ink-deep); background: var(--sun); box-shadow: 0 18px 45px rgba(1,42,53,.24); }
.voices-copy small { display: block; max-width: 39rem; margin-top: 1rem; color: rgba(255,255,255,.68); font-size: .7rem; line-height: 1.7; }
.voices-cards { display: grid; gap: .85rem; }
.voices-cards article { position: relative; padding: 1.25rem 1.3rem 1.25rem 4.5rem; border: 1px solid rgba(255,255,255,.22); border-radius: 1.25rem; background: rgba(255,255,255,.1); backdrop-filter: blur(14px); box-shadow: 0 16px 40px rgba(2,48,58,.14); }
.voices-cards article:nth-child(2) { transform: translateX(2rem); }
.voices-cards article > span { position: absolute; left: 1.25rem; top: 1.2rem; display: grid; place-items: center; width: 2.2rem; height: 2.2rem; color: var(--ink-deep); border-radius: 50%; background: #fff2a7; font-size: 1.05rem; font-weight: 900; }
.voices-cards h3 { margin: 0 0 .25rem; font-family: var(--display); font-size: 1rem; }
.voices-cards p { margin: 0; color: rgba(255,255,255,.74); font-size: .72rem; line-height: 1.7; }

.parent-section { padding: 3.2rem 0; background: #eef3ed; }
.parent-layout { display: grid; grid-template-columns: .55fr 1.2fr .55fr; align-items: center; gap: 3rem; }
.parent-label { margin: 0; color: var(--aqua-deep); font-size: .62rem; font-weight: 900; letter-spacing: .2em; }
.parent-layout h2 { margin: .15rem 0 0; font-family: var(--display); font-size: 1.35rem; }
.parent-layout > p { margin: 0; color: #597078; font-size: .75rem; line-height: 1.8; }
.parent-links { display: grid; gap: .45rem; font-size: .72rem; font-weight: 800; }
.parent-links a::after { content: " ↗"; color: var(--coral); }

.site-footer { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 2rem; padding: 2rem 3rem; color: rgba(255,255,255,.75); background: var(--ink-deep); font-size: .68rem; }
.brand-footer { color: #fff; }
.site-footer p { margin: 0; }
.site-footer nav { display: flex; gap: 1.1rem; }
.site-footer small { grid-column: 3; }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s cubic-bezier(.2,.8,.2,1); }
.reveal.is-visible { opacity: 1; transform: none; }

@keyframes cloud-drift { 0%,100% { translate: 0 0; } 50% { translate: 40px -10px; } }
@keyframes twinkle { 0%,100% { opacity: .4; transform: scale(.65) rotate(0); } 50% { opacity: 1; transform: scale(1.2) rotate(25deg); } }
@keyframes creature-bob { 0%,100% { transform: translateY(0) rotate(-1deg); } 50% { transform: translateY(-10px) rotate(1deg); } }
@keyframes scroll-line { 0% { transform: scaleY(0); transform-origin: top; } 45% { transform: scaleY(1); transform-origin: top; } 55% { transform: scaleY(1); transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

@media (max-width: 960px) {
  .site-nav a:not(.nav-cta) { display: none; }
  .about-layout, .story-grid, .learning-layout, .screens-layout, .faq-layout, .voices-layout { grid-template-columns: 1fr; }
  .faq-heading { position: static; }
  .story-copy { max-width: 700px; }
  .story-visual { width: min(780px, 100%); margin-inline: auto; }
  .learning-copy { order: -1; }
  .device-stage { width: min(720px, 100%); margin: auto; }
  .screens-copy { max-width: 680px; }
  .voices-copy { max-width: 760px; }
  .voices-cards { max-width: 760px; }
  .screen-stack { width: min(700px, 100%); margin: auto; }
  .parent-layout { grid-template-columns: 1fr 1.8fr; }
  .parent-links { grid-column: 2; grid-row: 2; grid-template-columns: repeat(2, max-content); }
  .site-footer { grid-template-columns: 1fr auto; }
  .site-footer p { display: none; }
  .site-footer small { grid-column: 2; }
}

@media (max-width: 700px) {
  .site-header { inset: .75rem .8rem auto; padding-left: .8rem; }
  .site-nav .nav-cta { padding-inline: .8rem; }
  .brand { font-size: .85rem; }
  .brand-flame { width: 25px; height: 25px; }
  .brand-flame i { width: 10px; height: 10px; left: 6px; top: 9px; }
  .hero { min-height: 780px; align-items: end; }
  .hero-video { object-position: 58% center; }
  .hero-wash { background: linear-gradient(0deg, rgba(4,41,52,.9) 0%, rgba(4,51,62,.52) 48%, rgba(3,52,63,.12) 80%); }
  .hero-content { width: calc(100% - 2rem); margin: 0 auto 6rem; }
  .hero h1 { font-size: clamp(3.2rem, 14.5vw, 5.1rem); }
  .hero-product-name { font-size: .78rem; letter-spacing: .08em; }
  .hero-copy br { display: none; }
  .hero-actions { align-items: stretch; }
  .button, .sound-button { min-height: 52px; padding: .75rem 1.1rem; }
  .scroll-cue { display: none; }
  .section { padding-block: 5.5rem; }
  .section-inner, .section-heading { width: min(100% - 2rem, 1180px); }
  .section h2 { font-size: clamp(2.1rem, 10vw, 3.4rem); }
  .story-grid { gap: 2.5rem; }
  .about-facts li { grid-template-columns: 5.4rem 1fr; padding-inline: 1rem; }
  .story-copy h2 { font-size: clamp(2.1rem, 9.5vw, 3.2rem); }
  .screens-copy h2 { font-size: clamp(2.1rem, 9.5vw, 3.2rem); }
  .learning-loop { grid-template-columns: 1fr; }
  .loop-card { min-height: auto; }
  .loop-arrow { transform: rotate(90deg); text-align: center; }
  .device-stage { min-height: 470px; }
  .phone { width: 53%; border-radius: 1.25rem; }
  .phone-main { left: 24%; }
  .phone-left { left: -5%; }
  .phone-right { right: -5%; }
  .stat-row { gap: .4rem; }
  .stat-row div + div { padding-left: .45rem; }
  .stat-row strong { font-size: 1.7rem; }
  .evolution-stage { padding: 1.4rem .7rem 1rem; border-radius: 1.6rem; overflow-x: auto; }
  .evolution-stage::before { content: "← スワイプして進化を見る →"; position: sticky; left: .7rem; display: block; width: max-content; margin: 0 0 .8rem; color: var(--aqua-deep); font-size: .65rem; font-weight: 900; letter-spacing: .08em; }
  .evolution-track { min-width: 730px; }
  .evolution-caption { min-width: 700px; }
  .screen-stack { min-height: 500px; }
  .screen-card { width: 50%; border-width: 4px; border-radius: 1.25rem; }
  .screen-card-front { left: 25%; }
  .finale-section { min-height: 680px; }
  .voices-cards article { padding-left: 4.2rem; }
  .voices-cards article:nth-child(2) { transform: none; }
  .parent-layout { grid-template-columns: 1fr; gap: 1rem; }
  .parent-links { grid-column: auto; grid-row: auto; grid-template-columns: 1fr; }
  .site-footer { grid-template-columns: 1fr; padding: 2rem 1.3rem; }
  .site-footer nav { flex-wrap: wrap; }
  .site-footer small { grid-column: 1; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .hero-video { display: none; }
  .hero { background: linear-gradient(90deg, rgba(4,42,57,.76), rgba(4,47,59,.15)), url("./assets/public/repeta-opening-poster.jpg") center / cover; }
  .reveal { opacity: 1; transform: none; }
}