:root {
  --ink: #244a70;
  --muted: #66819c;
  --blue: #1688f3;
  --blue-deep: #0a65cd;
  --mint: #58ddbd;
  --mint-deep: #15ad82;
  --coral: #ff6d70;
  --yellow: #ffdc4b;
  --pink: #ff9fc3;
  --lavender: #a899ff;
  --paper: #fffcf6;
  --white: #fff;
  --line: rgba(36, 74, 112, .13);
  --content: 1120px;
  font-family: "Hiragino Maru Gothic ProN", "Yu Gothic", "Noto Sans JP", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { width: 100%; max-width: 100%; overflow-x: hidden; scroll-behavior: smooth; background: var(--paper); }
body { width: 100%; max-width: 100%; margin: 0; min-width: 320px; overflow-x: hidden; background: var(--paper); }
main { width: 100%; max-width: 100%; overflow-x: hidden; overflow-x: clip; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
p { margin-top: 0; }

.site-header {
  width: 100%;
  height: 82px;
  padding: 0 max(24px, calc((100% - var(--content)) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,255,255,.97);
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 10;
}

.brand { display: inline-flex; align-items: center; gap: 12px; font-size: 17px; font-weight: 900; letter-spacing: .02em; }
.brand img { width: 44px; height: 44px; border-radius: 13px; box-shadow: 0 7px 16px rgba(21,173,130,.18); transform: rotate(-2deg); }
.site-header nav { display: flex; align-items: center; gap: 26px; font-size: 14px; font-weight: 800; }
.site-header nav a:not(.nav-download) { color: #405772; }
.site-header nav a:not(.nav-download) { position: relative; }
.site-header nav a:not(.nav-download)::after { content: ""; position: absolute; right: 0; bottom: -8px; left: 0; height: 3px; border-radius: 999px; background: var(--yellow); transform: scaleX(0); transition: transform .2s ease; }
.site-header nav a:not(.nav-download):hover { color: var(--blue); }
.site-header nav a:not(.nav-download):hover::after { transform: scaleX(1); }
.nav-download { padding: 11px 19px; color: white; background: linear-gradient(135deg, #ff787b, #ff668f); border-radius: 999px; box-shadow: 0 8px 18px rgba(255,109,112,.22); transition: transform .18s ease, box-shadow .18s ease; }
.nav-download:hover { transform: translateY(-2px); box-shadow: 0 11px 23px rgba(255,109,112,.3); }

.hero {
  width: 100%;
  min-height: 620px;
  padding: 48px max(24px, calc((100% - var(--content)) / 2));
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(390px, .9fr);
  align-items: center;
  gap: 72px;
  background: linear-gradient(120deg, #fff 0%, #fff 45%, #edfdf9 100%);
}

.hero-copy { max-width: 560px; }
.eyebrow,
.section-kicker {
  display: inline-block;
  margin: 0 0 16px;
  color: var(--blue-deep);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .13em;
}
.eyebrow { padding: 8px 15px; color: white; background: var(--mint-deep); border-radius: 999px; box-shadow: 0 6px 0 #cff3e9; transform: rotate(-1deg); }
.hero h1 { margin: 0; color: var(--blue-deep); font-size: clamp(54px, 5.4vw, 74px); line-height: 1; letter-spacing: -.07em; white-space: nowrap; text-shadow: 3px 4px 0 #dcefff; }
.hero h1 span { display: inline-block; color: var(--coral); font-size: 1.12em; position: relative; z-index: 1; }
.hero h1 span::after { content: ""; display: block; position: absolute; right: 1%; bottom: -7px; left: 7%; height: 13px; border-radius: 50%; background: var(--yellow); opacity: .82; transform: rotate(-2deg); z-index: -1; }
.hero-pop { display: inline-block; margin: 29px 0 0; padding: 12px 20px; color: var(--ink); background: white; border: 2px solid #d3e9ff; border-radius: 12px; box-shadow: 0 7px 0 #d7edff; font-size: 19px; font-weight: 900; position: relative; transform: rotate(.5deg); }
.hero-pop::after { content: ""; position: absolute; left: 35px; bottom: -12px; width: 16px; height: 16px; background: white; border-right: 2px solid #d3e9ff; border-bottom: 2px solid #d3e9ff; transform: rotate(45deg); }
.hero-lead { margin: 22px 0 18px; color: var(--muted); font-size: 17px; line-height: 1.9; font-weight: 700; }
.quick-points { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-bottom: 28px; color: #355473; font-size: 13px; font-weight: 700; }
.quick-points span::before { content: "✓"; margin-right: 7px; color: var(--mint-deep); }
.store-badges { display: flex; align-items: center; gap: 10px; }
.store-badges a { transition: opacity .18s ease; }
.store-badges a:hover { opacity: .82; }
.store-badges img { width: auto; height: 50px; }

.hero-visual { min-height: 520px; display: grid; place-items: center; position: relative; isolation: isolate; }
.hero-visual::before { content: ""; display: block; width: min(430px, 100%); aspect-ratio: 1; position: absolute; inset: 50% auto auto 50%; border-radius: 50%; background: #bdf2eb; transform: translate(-50%, -50%); z-index: 0; }
.spark { display: block; position: absolute; z-index: 3; line-height: 1; }
.spark-one { top: 13%; right: 12%; color: var(--coral); font-size: 38px; transform: rotate(14deg); }
.spark-two { bottom: 12%; left: 10%; color: var(--yellow); font-size: 26px; -webkit-text-stroke: 4px white; }
.float-card { position: absolute; z-index: 4; padding: 13px 16px; background: rgba(255,255,255,.96); border: 2px solid #d9ecff; border-radius: 14px; box-shadow: 0 12px 28px rgba(38,77,119,.13); }
.float-card strong { display: block; font-size: 19px; }
.float-card span { display: block; margin-top: 4px; color: var(--muted); font-size: 11px; font-weight: 800; }
.float-card-time { top: 24%; left: 0; color: var(--blue-deep); }
.float-card-goal { right: 0; bottom: 19%; color: #df4f57; border-color: #ffd5d6; }
.hero-character { width: 320px; height: auto; position: absolute; right: -45px; bottom: 8px; z-index: 3; filter: drop-shadow(0 15px 16px rgba(36,74,112,.14)); pointer-events: none; }

.phone {
  width: 258px;
  padding: 7px;
  border: 1px solid #0f1728;
  border-radius: 38px;
  background: linear-gradient(145deg, #27354d, #111827 70%);
  box-shadow: 0 24px 52px rgba(22,43,73,.22), inset 0 0 0 1px rgba(255,255,255,.16);
  position: relative;
  z-index: 2;
}
.phone::before,
.phone::after { content: ""; position: absolute; z-index: -1; width: 3px; background: #26344c; }
.phone::before { left: -4px; top: 24%; height: 46px; border-radius: 3px 0 0 3px; box-shadow: 0 60px 0 #26344c; }
.phone::after { right: -4px; top: 31%; height: 74px; border-radius: 0 3px 3px 0; }
.phone img { width: 100%; height: auto; border: 1px solid rgba(0,0,0,.18); border-radius: 31px; background: white; }
.phone-speaker { position: absolute; z-index: 3; top: 13px; left: 50%; width: 70px; height: 19px; border-radius: 999px; background: #0a1020; transform: translateX(-50%); }
.phone-speaker::after { content: ""; position: absolute; top: 6px; right: 8px; width: 6px; height: 6px; border-radius: 50%; background: #263c61; }
.phone { transition: transform .25s ease, box-shadow .25s ease; }
.phone-hero { width: 286px; transform: rotate(2deg); }
.hero-visual:hover .phone-hero { transform: rotate(0) translateY(-5px); box-shadow: 0 30px 60px rgba(22,43,73,.27), inset 0 0 0 1px rgba(255,255,255,.16); }
.phone-tilt-left { transform: rotate(-2deg); }

.section-intro { width: min(760px, calc(100% - 40px)); margin: 0 auto; padding: 72px 0 58px; text-align: center; }
.section-kicker { padding: 6px 11px; border-radius: 7px; background: #e9f8f4; box-shadow: 3px 3px 0 #ccefe6; transform: rotate(-1deg); }
.section-intro h2,
.motivation h2,
.design-section h2,
.reassurance h2,
.faq h2,
.final-cta h2 { margin: 0; font-size: clamp(38px, 4.5vw, 58px); line-height: 1.25; letter-spacing: -.045em; }
.section-intro > p:last-child { margin: 24px 0 0; color: var(--muted); font-size: 16px; line-height: 1.95; }
.heading-line { display: block; }
.keep { display: inline-block; white-space: nowrap; }
.section-intro h2::after { content: ""; display: block; width: 82px; height: 7px; margin: 22px auto 0; border-radius: 999px; background: linear-gradient(90deg, var(--blue) 0 33%, var(--mint) 33% 66%, var(--coral) 66%); transform: rotate(-2deg); }

.feature {
  width: 100%;
  min-height: 590px;
  margin: 0;
  padding: 70px max(24px, calc((100% - var(--content)) / 2));
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(390px, .9fr);
  align-items: center;
  gap: 88px;
  scroll-margin-top: 24px;
}
.feature-blue { background: linear-gradient(180deg, #edf6ff 0%, #e9faf5 100%); }
.feature-mint { background: linear-gradient(180deg, #e9faf5 0%, #fff2ee 100%); }
.feature-coral { background: linear-gradient(180deg, #fff2ee 0%, #fff9dc 100%); }
.feature::before,
.feature::after { display: none; }
.feature-reverse .feature-copy { order: 2; }
.feature-copy { max-width: 520px; position: relative; z-index: 2; }
.feature-number { position: absolute; top: -62px; left: -4px; color: rgba(36,74,112,.07); font-size: 96px; font-weight: 900; line-height: 1; }
.feature-label { display: inline-block; margin: 0 0 14px; padding: 6px 10px; color: var(--blue); background: rgba(255,255,255,.72); border: 1px solid rgba(22,136,243,.18); border-radius: 7px; box-shadow: 3px 3px 0 rgba(22,136,243,.12); font-size: 12px; font-weight: 900; letter-spacing: .16em; transform: rotate(-1deg); }
.feature-mint .feature-label { color: var(--mint-deep); }
.feature-coral .feature-label { color: #d8544d; }
.feature-copy h2 { margin: 0 0 24px; font-size: clamp(34px, 3.7vw, 46px); line-height: 1.3; letter-spacing: -.04em; }
.feature-copy > p:not(.feature-label) { margin-bottom: 0; color: var(--muted); font-size: 16px; line-height: 1.9; }
.check-list { margin: 26px 0 0; padding: 0; list-style: none; display: grid; gap: 11px; color: #36516c; font-size: 14px; font-weight: 700; }
.check-list li::before { content: "✓"; display: inline-grid; place-items: center; width: 22px; height: 22px; margin-right: 10px; color: white; background: var(--blue); border-radius: 50%; font-size: 11px; }
.feature-mint .check-list li::before { background: var(--mint-deep); }
.feature-coral .check-list li::before { background: var(--coral); }
.feature-visual { min-height: 450px; display: grid; place-items: center; position: relative; z-index: 2; isolation: isolate; }
.feature-visual::before { content: ""; display: block; width: 390px; max-width: 92%; aspect-ratio: 1; position: absolute; inset: 50% auto auto 50%; border: 2px dashed rgba(22,136,243,.18); border-radius: 50%; background: rgba(255,255,255,.36); transform: translate(-50%, -50%); z-index: -1; }
.feature-mint .feature-visual::before { border-color: rgba(21,173,130,.2); background: rgba(255,255,255,.4); }
.feature-coral .feature-visual::before { border-color: rgba(255,109,112,.2); }
.feature-visual .phone { width: 250px; }
.feature-character { position: absolute; z-index: 3; width: 270px; height: auto; filter: drop-shadow(0 13px 14px rgba(36,74,112,.13)); pointer-events: none; }
.record-character { left: -48px; bottom: -6px; }
.graph-character { right: -48px; bottom: -6px; }

.double-phone { min-height: 450px; display: flex; align-items: center; justify-content: center; gap: 18px; position: relative; z-index: 2; }
.double-phone .phone { width: 184px; flex: 0 0 auto; }
.phone-back { transform: rotate(-2deg); }
.phone-front { transform: rotate(2deg); }
.history-character { right: -55px; bottom: -8px; width: 260px; }

.motivation {
  width: 100%;
  margin: 0;
  padding: 74px max(24px, calc((100% - var(--content)) / 2));
  display: grid;
  grid-template-columns: 1fr .9fr;
  align-items: center;
  gap: 88px;
  background: linear-gradient(180deg, #fff9dc 0%, #70d7d4 18%, #70d7d4 100%);
}
.motivation-copy { max-width: 540px; }
.motivation h2 { color: white; text-shadow: 0 3px 0 rgba(36,74,112,.12); }
.motivation .section-kicker { color: #126e72; background: rgba(255,255,255,.78); box-shadow: 3px 3px 0 rgba(18,110,114,.12); }
.motivation-copy > p:not(.section-kicker) { margin: 24px 0 0; color: #245a6a; font-size: 16px; line-height: 1.9; }
.trophy-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 26px; }
.trophy-chips span { padding: 8px 12px; color: #835b2c; background: rgba(255,255,255,.74); border: 1px solid rgba(131,91,44,.18); border-radius: 999px; box-shadow: 0 4px 0 rgba(230,184,52,.16); font-size: 12px; font-weight: 800; }
.trophy-chips span:nth-child(2) { transform: translateY(5px); }
.trophy-phone { min-height: 460px; display: grid; place-items: center; position: relative; }
.trophy-phone::before { content: ""; width: 390px; max-width: 90%; aspect-ratio: 1; position: absolute; border-radius: 50%; background: rgba(255,255,255,.33); border: 2px solid rgba(255,255,255,.5); }
.trophy-phone .phone { width: 250px; transform: rotate(2deg); }
.trophy-character { left: -50px; bottom: -10px; width: 270px; transform: scaleX(-1); }
.trophy-orbit { position: absolute; z-index: 3; font-size: 28px; }
.orbit-one { top: 17%; left: 15%; color: #e8b900; }
.orbit-two { right: 12%; bottom: 20%; }

.design-section { width: 100%; margin: 0; padding: 78px max(20px, calc((100% - var(--content)) / 2)); color: var(--ink); background: linear-gradient(180deg, #70d7d4 0%, #f3fffc 12%, #f4f1ff 100%); }
.design-section::before,
.design-section::after { display: none; }
.section-intro-light { padding: 0 0 54px; }
.section-intro-light .section-kicker { color: #7155c7; }
.theme-showcase { width: 100%; min-height: 440px; margin: 0 auto; display: flex; align-items: flex-end; justify-content: center; gap: 34px; }
.theme-phone { margin: 0; text-align: center; }
.theme-phone .phone { width: 210px; }
.theme-dark { transform: rotate(-2deg); }
.theme-sakura { transform: translateY(-20px); }
.theme-mint { transform: rotate(2deg); }
.theme-phone figcaption { display: inline-block; margin-top: 14px; padding: 6px 12px; color: #536d88; background: rgba(255,255,255,.72); border: 1px solid rgba(85,76,145,.12); border-radius: 999px; box-shadow: 0 5px 0 rgba(113,85,199,.08); font-size: 13px; font-weight: 900; }
.design-stats { width: min(640px, 100%); margin: 46px auto 0; padding-top: 24px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid rgba(85,76,145,.16); }
.design-stats div { display: flex; align-items: baseline; justify-content: center; gap: 6px; }
.design-stats div + div { border-left: 1px solid rgba(85,76,145,.16); }
.design-stats strong { color: #7155c7; font-size: 40px; }
.design-stats span { color: var(--muted); font-size: 13px; font-weight: 800; }

.reassurance {
  width: 100%;
  margin: 0;
  padding: 78px max(24px, calc((100% - var(--content)) / 2));
  display: grid;
  grid-template-columns: .8fr 1.1fr;
  align-items: center;
  gap: 92px;
  background: linear-gradient(180deg, #f4f1ff 0%, #fff 14%, #fff 100%);
}
.reassurance-visual { min-height: 460px; display: grid; place-items: center; position: relative; isolation: isolate; }
.reassurance-visual::before { content: ""; display: block; width: 380px; max-width: 90%; aspect-ratio: 1; position: absolute; border-radius: 45% 55% 48% 52%; background: linear-gradient(145deg, #e6f8ff, #eafff5); border: 2px solid white; box-shadow: 0 20px 50px rgba(33,118,134,.1); transform: rotate(6deg); z-index: -1; }
.reassurance-visual .phone { width: 250px; }
.reassurance-copy .section-kicker { color: var(--mint-deep); }
.reassurance-list { display: grid; margin-top: 34px; border-top: 1px solid var(--line); }
.reassurance-list article { display: grid; grid-template-columns: 46px 1fr; gap: 15px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.reassurance-list article > span { display: grid; place-items: center; width: 42px; height: 42px; color: var(--blue); background: #eaf4ff; border-radius: 50%; font-size: 21px; font-weight: 900; }
.reassurance-list article:nth-child(2) > span { color: var(--mint-deep); background: #e4faf4; }
.reassurance-list article:nth-child(3) > span { color: #d44f47; background: #fff0ed; }
.reassurance-list h3 { margin: 1px 0 6px; font-size: 17px; }
.reassurance-list p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.75; }

.feature-grid { padding: 78px max(24px, calc((100% - var(--content)) / 2)); background: #f8fbff; }
.feature-grid .section-intro { padding: 0 0 46px; }
.grid-cards { width: 100%; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.grid-cards article { min-height: 190px; padding: 26px 24px; transition: background .2s ease, transform .2s ease; }
.grid-cards article:nth-child(1) { background: #f3f9ff; }
.grid-cards article:nth-child(2) { background: #f1fcf8; }
.grid-cards article:nth-child(3) { background: #fff5f4; }
.grid-cards article:nth-child(4) { background: #fffbed; }
.grid-cards article:hover { transform: translateY(-5px); }
.grid-cards article + article { border-left: 1px solid var(--line); }
.grid-cards article > span { display: grid; place-items: center; width: 44px; height: 44px; color: var(--blue); background: #e5f1ff; border-radius: 50%; font-size: 21px; font-weight: 900; }
.grid-cards article:nth-child(2) > span { color: var(--mint-deep); background: #def8f0; }
.grid-cards article:nth-child(3) > span { color: #d34f46; background: #ffebe8; }
.grid-cards article:nth-child(4) > span { color: #997000; background: #fff5cc; }
.grid-cards h3 { margin: 18px 0 8px; font-size: 17px; }
.grid-cards p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

.faq { width: 100%; margin: 0; padding: 78px max(24px, calc((100% - 1000px) / 2)); display: grid; grid-template-columns: minmax(360px, .6fr) minmax(0, 1fr); gap: 58px; align-items: start; background: white; }
.faq-heading { position: static; }
.faq-heading h2 { font-size: clamp(38px, 4vw, 52px); white-space: nowrap; }
.faq-heading > p:last-child { max-width: 380px; margin-top: 18px; color: var(--muted); line-height: 1.8; text-wrap: balance; }
.faq-list { display: grid; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { padding: 22px 46px 22px 0; cursor: pointer; list-style: none; font-weight: 800; line-height: 1.55; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background:
    linear-gradient(#fff, #fff) center / 14px 3px no-repeat,
    linear-gradient(#fff, #fff) center / 3px 14px no-repeat,
    var(--blue);
  box-shadow: 0 0 0 4px #d9ecff;
  transform: translateY(-50%);
  transform-origin: 50% 50%;
}
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq summary:focus { outline: none; }
.faq summary:focus-visible { outline: 3px solid rgba(22,136,243,.35); outline-offset: 5px; border-radius: 4px; }
.faq details p { margin: 0; padding: 0 42px 22px 0; color: var(--muted); font-size: 14px; line-height: 1.9; }

.final-cta { width: 100%; margin: 0; padding: 72px 24px; text-align: center; background: linear-gradient(135deg, #e9f5ff, #fff8ed 52%, #eafff8); }
.final-cta > img { margin: 0 auto 22px; border: 4px solid white; border-radius: 24px; box-shadow: 0 12px 0 #ccecff, 0 20px 36px rgba(36,74,112,.12); transform: rotate(-2deg); }
.final-cta > p:not(.section-kicker) { margin: 18px 0 28px; color: var(--muted); font-size: 16px; }
.final-cta .store-badges { justify-content: center; }
.cta-deco { display: none; }

footer { padding: 48px 24px 22px; color: #aebed0; background: #0b1a2d; }
.footer-inner { width: min(var(--content), 100%); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.footer-brand { display: flex; align-items: center; gap: 12px; color: white; }
.footer-brand img { border-radius: 12px; }
.footer-brand strong,
.footer-brand span { display: block; }
.footer-brand span { margin-top: 4px; color: #7f94aa; font-size: 11px; }
.footer-inner nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 12px 20px; font-size: 12px; }
.footer-inner nav a:hover { color: white; }
.copyright { width: min(var(--content), 100%); margin: 38px auto 0; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.1); font-size: 11px; }

@media (max-width: 1100px) {
  .site-header nav { gap: 17px; }
  .hero { grid-template-columns: 1fr; gap: 44px; padding-top: 76px; text-align: center; }
  .hero-copy { max-width: 650px; margin: 0 auto; }
  .hero-lead br { display: none; }
  .quick-points,
  .store-badges { justify-content: center; }
  .hero-visual { min-height: 560px; }
  .float-card-time { left: max(0px, calc(50% - 235px)); }
  .float-card-goal { right: max(0px, calc(50% - 235px)); }
  .feature,
  .feature-reverse { grid-template-columns: 1fr; gap: 54px; padding-top: 110px; text-align: center; }
  .feature-reverse .feature-copy { order: 0; }
  .feature-copy { max-width: 650px; margin: 0 auto; }
  .check-list { width: fit-content; margin-left: auto; margin-right: auto; text-align: left; }
  .motivation { grid-template-columns: 1fr; gap: 48px; text-align: center; }
  .motivation-copy { max-width: 680px; margin: 0 auto; }
  .trophy-chips { justify-content: center; }
  .reassurance { grid-template-columns: 1fr; gap: 52px; }
  .reassurance-copy { max-width: 720px; margin: 0 auto; text-align: center; }
  .reassurance-list { text-align: left; }
  .grid-cards { grid-template-columns: repeat(2, 1fr); }
  .grid-cards article:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .grid-cards article:nth-child(4) { border-top: 1px solid var(--line); }
  .faq { grid-template-columns: 1fr; gap: 42px; }
  .faq-heading { text-align: center; }
  .faq-heading > p:last-child { margin-right: auto; margin-left: auto; }
}

@media (max-width: 680px) {
  .site-header { height: 72px; min-height: 72px; padding: 10px 16px; display: flex; align-items: center; gap: 12px; }
  .site-header .brand { flex: 1 1 auto; }
  .site-header nav { width: auto; margin-left: auto; padding: 0; border: 0; font-size: 12px; }
  .site-header nav a:not(.nav-download) { display: none; }
  .brand img { width: 40px; height: 40px; }
  .brand span { font-size: 16px; }
  .nav-download { padding: 9px 11px; }

  .hero { min-height: 0; padding: 48px 20px 54px; gap: 26px; }
  .hero h1 { font-size: clamp(42px, 12vw, 58px); }
  .hero-pop { font-size: 17px; }
  .hero-lead { font-size: 15px; line-height: 1.85; }
  .quick-points { display: grid; gap: 7px; }
  .store-badges { gap: 7px; }
  .store-badges img { height: 42px; }
  .hero-visual { min-height: 430px; }
  .hero-visual::before { width: 310px; }
  .hero-character { width: 210px; right: -42px; bottom: 14px; }
  .spark-one { right: 2%; }
  .spark-two { left: 2%; }
  .phone-hero { width: 215px; }
  .float-card { padding: 11px 13px; }
  .float-card strong { font-size: 16px; }
  .float-card-time { left: 0; }
  .float-card-goal { right: 0; bottom: 15%; }

  .section-intro { width: calc(100% - 36px); padding: 56px 0 44px; }
  .section-intro h2,
  .motivation h2,
  .design-section h2,
  .reassurance h2,
  .faq h2,
  .final-cta h2 { font-size: 35px; }
  .section-intro > p:last-child { font-size: 14px; }
  .section-intro > p:last-child br { display: none; }

  .feature { min-height: 0; padding: 68px 20px 56px; gap: 30px; }
  .feature-number { top: -50px; font-size: 78px; }
  .feature-copy h2 { font-size: clamp(28px, 8.2vw, 33px); }
  .feature-copy > p:not(.feature-label) { font-size: 14px; }
  .feature-visual { min-height: 0; }
  .feature-visual::before { width: 285px; }
  .feature-visual .phone { width: 220px; }
  .feature-character { width: 180px; }
  .record-character { left: -38px; bottom: -4px; }
  .graph-character { right: -38px; bottom: -4px; }
  .feature-coral { padding-bottom: 28px; }
  .double-phone { min-height: 0; gap: 9px; margin-bottom: 0; }
  .double-phone .phone { width: min(42vw, 158px); }
  .history-character { right: -34px; bottom: 0; width: 160px; }

  .motivation { padding: 62px 20px; }
  .motivation-copy > p:not(.section-kicker) { font-size: 14px; }
  .trophy-phone { min-height: 400px; }
  .trophy-phone::before { width: 300px; }
  .trophy-phone .phone { width: 220px; }
  .trophy-character { left: -42px; bottom: -4px; width: 180px; }
  .trophy-orbit { display: none; }

  .design-section { padding: 62px 14px; }
  .section-intro-light { width: calc(100% - 22px); padding: 0 0 40px; }
  .theme-showcase { min-height: 340px; gap: 4px; }
  .theme-phone .phone { width: min(30vw, 118px); padding: 4px; border-radius: 24px; }
  .theme-phone .phone img { border-radius: 19px; }
  .theme-phone .phone-speaker { top: 8px; width: 42px; height: 12px; }
  .theme-phone .phone-speaker::after { top: 4px; right: 5px; width: 4px; height: 4px; }
  .theme-phone figcaption { font-size: 11px; }
  .theme-dark { transform: rotate(-1deg); }
  .theme-sakura { transform: translateY(-10px); }
  .theme-mint { transform: rotate(1deg); }
  .design-stats { margin-top: 32px; padding-top: 20px; }
  .design-stats strong { font-size: 31px; }
  .design-stats span { font-size: 11px; }

  .reassurance { padding: 62px 20px; }
  .reassurance-visual { min-height: 400px; }
  .reassurance-visual::before { width: 300px; }
  .reassurance-visual .phone { width: 220px; }
  .reassurance-list article { grid-template-columns: 42px 1fr; padding: 18px 0; }

  .feature-grid { padding: 62px 20px; }
  .feature-grid .section-intro { width: 100%; padding: 0 0 36px; }
  .grid-cards { grid-template-columns: 1fr; }
  .grid-cards article { min-height: 0; padding: 24px 4px; }
  .grid-cards article + article { border-left: 0; border-top: 1px solid var(--line); }

  .faq { padding: 62px 20px; }
  .faq summary { padding-right: 38px; }
  .faq details p { padding-right: 30px; }

  .final-cta { padding: 58px 20px; }
  .final-cta > p:not(.section-kicker) { font-size: 15px; }
  .footer-inner { display: grid; }
  .footer-inner nav { justify-content: flex-start; }
}

@media (max-width: 420px) {
  .site-header nav { font-size: 11px; }
  .nav-download { padding: 8px 9px; }
  .hero h1 { font-size: 42px; }
  .hero-visual { min-height: 450px; }
  .phone-hero { width: 205px; }
  .float-card-goal { bottom: 12%; }
  .double-phone .phone { width: min(41vw, 150px); }
  .design-stats div { display: grid; gap: 0; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .phone,
  .nav-download,
  .grid-cards article { transition: none; }
}