:root {
  --ink: #172033;
  --ink-soft: #4f596e;
  --muted: #7b8395;
  --pink: #f05283;
  --pink-soft: #fff0f5;
  --blue: #2778f6;
  --blue-soft: #eef6ff;
  --mint: #15a9a3;
  --mint-soft: #eafbf7;
  --yellow: #ffbd2e;
  --paper: #fff8f9;
  --white: #ffffff;
  --line: rgba(23, 32, 51, 0.12);
  --shadow: 0 24px 70px rgba(49, 54, 80, 0.16);
  --radius: 8px;
  font-family: "Inter", "Noto Sans JP", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.75;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  transform: translateY(-140%);
  background: var(--ink);
  color: var(--white);
  padding: 10px 14px;
}

.skip-link:focus {
  transform: translateY(0);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 14px min(5vw, 64px);
  border-bottom: 1px solid rgba(23, 32, 51, 0.08);
  background: rgba(255, 248, 249, 0.92);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.18rem;
  font-weight: 900;
}

.brand img,
.hero-icon,
.final-cta img {
  border-radius: var(--radius);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--ink-soft);
  font-size: 0.92rem;
  font-weight: 800;
}

.site-nav a:hover {
  color: var(--pink);
}

.nav-cta {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px 12px;
  color: var(--ink);
  background: var(--white);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.nav-toggle span:first-child,
.nav-toggle span:first-child::before,
.nav-toggle span:first-child::after {
  display: block;
  width: 18px;
  height: 2px;
  margin: auto;
  background: var(--ink);
  content: "";
}

.nav-toggle span:first-child::before {
  transform: translateY(-7px);
}

.nav-toggle span:first-child::after {
  transform: translateY(5px);
}

.hero {
  position: relative;
  min-height: calc(100vh - 72px);
  overflow: hidden;
  background: #f7fbff;
}

.hero-photo,
.hero-photo img,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(255, 248, 249, 0.96) 0%, rgba(255, 248, 249, 0.88) 34%, rgba(255, 248, 249, 0.34) 62%, rgba(255, 248, 249, 0.1) 100%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.2), rgba(255, 248, 249, 0.78));
}

.hero-content {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(480px, 1.1fr);
  gap: 56px;
  align-items: center;
  min-height: calc(100vh - 72px);
  padding: 86px min(5vw, 64px);
}

.hero-copy {
  max-width: 740px;
}

.hero-icon {
  width: 88px;
  height: 88px;
  margin-bottom: 22px;
  box-shadow: 0 18px 44px rgba(49, 54, 80, 0.16);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--mint);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 14px;
  font-size: 6.4rem;
  line-height: 0.96;
  letter-spacing: 0;
}

.hero-tagline {
  margin-bottom: 18px;
  color: var(--ink);
  font-size: 2.05rem;
  font-weight: 900;
  line-height: 1.32;
}

.lead {
  max-width: 660px;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

h2 {
  margin-bottom: 16px;
  font-size: 3.25rem;
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.18rem;
  line-height: 1.36;
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.store-button,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 58px;
  border-radius: var(--radius);
  font-weight: 900;
}

.store-button {
  min-width: 210px;
  flex-direction: column;
  align-items: flex-start;
  border: 1px solid transparent;
  padding: 11px 18px;
}

.store-button span {
  font-size: 0.78rem;
  line-height: 1.1;
}

.store-button strong {
  display: block;
  font-size: 1.06rem;
  line-height: 1.25;
}

.store-button.web {
  color: var(--white);
  background: linear-gradient(135deg, var(--pink), #8a47f6 58%, var(--blue));
  box-shadow: 0 16px 36px rgba(240, 82, 131, 0.26);
}

.store-button.ios {
  border-color: rgba(23, 32, 51, 0.18);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.92);
}

.button {
  min-width: 220px;
  border: 1px solid transparent;
  padding: 12px 22px;
}

.button.dark {
  width: fit-content;
  margin-top: 26px;
  color: var(--white);
  background: var(--ink);
}

.device-stage {
  position: relative;
  min-height: 560px;
}

.desktop-device {
  width: min(780px, 100%);
  overflow: hidden;
  border: 1px solid rgba(23, 32, 51, 0.12);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.device-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 38px;
  border-bottom: 1px solid var(--line);
  padding: 0 14px;
  background: var(--white);
}

.device-bar span {
  width: 9px;
  height: 9px;
  border-radius: 99px;
  background: var(--pink);
}

.device-bar span:nth-child(2) {
  background: var(--yellow);
}

.device-bar span:nth-child(3) {
  background: var(--mint);
}

.device-bar b {
  margin-left: 8px;
  color: var(--muted);
  font-size: 0.78rem;
}

.desktop-device picture {
  display: block;
  aspect-ratio: 16 / 9.4;
}

.desktop-device img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.phone-device {
  position: absolute;
  right: 4%;
  bottom: -34px;
  width: 245px;
  border: 10px solid #172033;
  border-radius: 34px;
  background: #172033;
  box-shadow: 0 28px 60px rgba(23, 32, 51, 0.26);
}

.phone-speaker {
  width: 64px;
  height: 5px;
  margin: 0 auto 8px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.28);
}

.phone-screen {
  min-height: 440px;
  border-radius: 23px;
  padding: 18px;
  background: linear-gradient(180deg, #fff8f9, #eef6ff);
}

.app-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
  font-weight: 900;
}

.app-top img {
  border-radius: var(--radius);
}

.phone-screen h2 {
  margin-bottom: 14px;
  font-size: 1.5rem;
}

.status-card,
.memo-card,
.status-grid div {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.status-card {
  padding: 14px;
}

.status-card span,
.status-grid span,
.memo-card span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 900;
}

.status-card strong {
  display: block;
  color: var(--pink);
  font-size: 1.32rem;
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 10px 0;
}

.status-grid div,
.memo-card {
  padding: 12px;
}

.status-grid strong {
  display: block;
  font-size: 1.1rem;
}

.memo-card p {
  margin: 6px 0 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.55;
}

.section {
  padding: 92px min(5vw, 64px);
}

.proof-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  background: var(--white);
}

.proof-strip div,
.feature-grid article,
.step-grid article,
.voice-grid figure,
.faq-list details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.proof-strip div {
  padding: 24px;
}

.proof-strip strong {
  display: block;
  font-size: 2.35rem;
  line-height: 1.05;
}

.proof-strip span {
  color: var(--muted);
  font-weight: 900;
}

.section-heading {
  max-width: 920px;
  margin-bottom: 36px;
}

.section-heading p,
.feature-grid p,
.step-grid p,
.screen-copy p,
.advertiser-copy p,
.faq-list p,
.final-cta p {
  color: var(--ink-soft);
}

.feature-section,
.screen-section,
.faq-section {
  background: var(--white);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.feature-grid article,
.step-grid article {
  padding: 24px;
}

.feature-grid span {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  margin-bottom: 18px;
  border-radius: var(--radius);
  color: var(--white);
  background: var(--blue);
  font-weight: 900;
}

.feature-grid article:nth-child(2) span {
  background: var(--pink);
}

.feature-grid article:nth-child(3) span {
  background: var(--mint);
}

.feature-grid article:nth-child(4) span {
  color: var(--ink);
  background: var(--yellow);
}

.how-section {
  background: var(--blue-soft);
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.step-grid b {
  color: var(--pink);
  font-size: 0.8rem;
}

.screen-section {
  display: grid;
  gap: 34px;
}

.screen-card {
  display: grid;
  grid-template-columns: minmax(380px, 1fr) minmax(0, 0.9fr);
  gap: 36px;
  align-items: center;
  border-top: 1px solid var(--line);
  padding-top: 34px;
}

.screen-card.reverse {
  grid-template-columns: minmax(0, 0.9fr) minmax(380px, 1fr);
}

.screen-card.reverse .screen-media {
  order: 2;
}

.screen-media {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.screen-media picture {
  display: block;
  aspect-ratio: 16 / 9.5;
}

.screen-card.reverse .screen-media picture {
  aspect-ratio: 16 / 10.5;
}

.screen-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.voices-section {
  background:
    linear-gradient(90deg, rgba(255, 189, 46, 0.14), transparent 36%),
    linear-gradient(135deg, transparent 48%, rgba(21, 169, 163, 0.12)),
    var(--paper);
}

.voice-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.voice-grid figure {
  margin: 0;
  padding: 24px;
}

.voice-grid blockquote {
  margin: 0 0 18px;
  color: var(--ink-soft);
  font-size: 1.02rem;
  font-weight: 800;
}

.voice-grid figcaption {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 900;
}

.advertiser-section {
  display: grid;
  grid-template-columns: minmax(420px, 1.05fr) minmax(0, 0.95fr);
  gap: 38px;
  align-items: center;
  background: var(--mint-soft);
}

.advertiser-media {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.advertiser-media picture {
  display: block;
  aspect-ratio: 16 / 9;
}

.advertiser-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.check-list {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  color: var(--ink-soft);
  font-weight: 800;
}

.check-list li::before {
  position: absolute;
  top: 0.55em;
  left: 0;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--pink), var(--blue));
  content: "";
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-list details {
  padding: 18px 20px;
}

.faq-list summary {
  cursor: pointer;
  color: var(--ink);
  font-weight: 900;
}

.faq-list p {
  margin: 12px 0 0;
}

.final-cta {
  display: grid;
  justify-items: center;
  text-align: center;
  background: linear-gradient(135deg, var(--pink-soft), var(--blue-soft) 58%, var(--mint-soft));
}

.final-cta img {
  box-shadow: 0 16px 44px rgba(49, 54, 80, 0.12);
}

.final-cta h2 {
  max-width: 840px;
  margin-top: 20px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 30px min(5vw, 64px);
  color: rgba(255, 255, 255, 0.78);
  background: var(--ink);
}

.site-footer strong {
  display: block;
  color: var(--white);
}

.site-footer p {
  margin: 4px 0 0;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.92);
  font-weight: 800;
}

@media (max-width: 1120px) {
  h1 {
    font-size: 4.7rem;
  }

  h2 {
    font-size: 2.65rem;
  }

  .hero-content,
  .screen-card,
  .screen-card.reverse,
  .advertiser-section {
    grid-template-columns: 1fr;
  }

  .hero-overlay {
    background:
      linear-gradient(180deg, rgba(255, 248, 249, 0.96), rgba(255, 248, 249, 0.84) 56%, rgba(255, 248, 249, 0.52)),
      linear-gradient(90deg, rgba(255, 248, 249, 0.62), rgba(255, 248, 249, 0.18));
  }

  .device-stage {
    min-height: 510px;
  }

  .screen-card.reverse .screen-media {
    order: 0;
  }

  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    padding: 12px 18px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 72px;
    left: 14px;
    right: 14px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 14px;
    background: var(--white);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .hero-content,
  .section {
    padding: 64px 18px;
  }

  .hero-content {
    min-height: auto;
  }

  h1 {
    font-size: 3.7rem;
  }

  h2 {
    font-size: 2.08rem;
  }

  .hero-tagline {
    font-size: 1.45rem;
  }

  .download-actions,
  .store-button {
    width: 100%;
  }

  .device-stage {
    min-height: auto;
    padding-bottom: 0;
  }

  .desktop-device {
    width: 100%;
  }

  .phone-device {
    position: relative;
    right: auto;
    bottom: auto;
    width: min(255px, 86vw);
    margin: 18px auto 0;
  }

  .proof-strip,
  .feature-grid,
  .step-grid,
  .voice-grid {
    grid-template-columns: 1fr;
  }

  .screen-media picture,
  .screen-card.reverse .screen-media picture,
  .advertiser-media picture {
    aspect-ratio: 4 / 3;
  }

  .site-footer {
    flex-direction: column;
  }
}