:root {
  color-scheme: light;
  --bg: #fbfaf9;
  --surface: #ffffff;
  --surface-soft: #f8f4f5;
  --text: #201c1f;
  --muted: #6e6268;
  --line: #eadde2;
  --line-strong: #d9c6ce;
  --accent: #cc6f81;
  --accent-strong: #9f4056;
  --blue: #236f9f;
  --blue-soft: #e8f3f8;
  --shadow: 0 12px 32px rgba(83, 58, 68, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html[data-lang="ja"] [data-lang-panel="en"],
html[data-lang="en"] [data-lang-panel="ja"] {
  display: none !important;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  line-height: 1.68;
  margin: 0;
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

img {
  max-width: 100%;
}

.site-header {
  background: rgba(251, 250, 249, 0.94);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  backdrop-filter: blur(12px);
  z-index: 5;
}

.header-inner,
.main,
.site-footer {
  margin: 0 auto;
  width: min(1120px, calc(100% - 36px));
}

.header-inner {
  align-items: center;
  display: flex;
  gap: 24px;
  justify-content: space-between;
  min-height: 68px;
}

.brand {
  align-items: center;
  color: var(--text);
  display: inline-flex;
  font-size: 1.08rem;
  font-weight: 800;
  gap: 10px;
  text-decoration: none;
  white-space: nowrap;
}

.brand img {
  border-radius: 8px;
  height: 30px;
  width: 30px;
}

.header-actions {
  align-items: center;
  display: flex;
  gap: 18px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  justify-content: flex-end;
}

.nav a {
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 700;
  text-decoration: none;
}

.nav a[aria-current="page"] {
  color: var(--accent-strong);
}

.language-switch {
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  display: inline-flex;
  padding: 2px;
}

.language-switch button {
  appearance: none;
  background: transparent;
  border: 0;
  border-radius: 6px;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 800;
  min-height: 30px;
  padding: 4px 9px;
}

.language-switch button[aria-pressed="true"] {
  background: var(--text);
  color: #ffffff;
}

.main {
  padding: 60px 0 86px;
}

.hero {
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 42px;
  grid-template-columns: minmax(0, 0.98fr) minmax(360px, 1.02fr);
  padding-bottom: 58px;
}

.app-icon {
  border-radius: 20px;
  box-shadow: var(--shadow);
  display: block;
  height: 88px;
  margin-bottom: 24px;
  width: 88px;
}

.eyebrow {
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
}

h1,
h2,
h3 {
  line-height: 1.22;
}

h1 {
  font-size: 3.1rem;
  margin: 8px 0 14px;
}

h2 {
  font-size: 1.7rem;
  margin: 0 0 12px;
}

h3 {
  font-size: 1.08rem;
  margin: 0 0 8px;
}

p {
  margin: 0 0 14px;
}

ul {
  margin: 0 0 18px;
  padding-left: 1.2rem;
}

li + li {
  margin-top: 8px;
}

.lead {
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 680px;
}

.cta-row,
.legal-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.button-link,
.pill {
  align-items: center;
  border-radius: 8px;
  display: inline-flex;
  font-size: 0.92rem;
  font-weight: 800;
  min-height: 40px;
  padding: 8px 14px;
}

.button-link {
  background: var(--text);
  border: 1px solid var(--text);
  color: #ffffff;
  text-decoration: none;
}

.button-link.secondary {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--text);
}

.pill {
  background: var(--surface-soft);
  border: 1px solid var(--line);
  color: var(--muted);
}

.hero-media {
  align-items: center;
  display: grid;
  grid-template-columns: 0.8fr 1fr;
  gap: 18px;
}

.device-frame {
  background: #fffdfd;
  border: 1px solid rgba(32, 28, 31, 0.14);
  box-shadow: 0 10px 26px rgba(83, 58, 68, 0.12);
  overflow: hidden;
}

.device-frame a,
.device-frame img {
  display: block;
}

.device-frame a {
  border-radius: inherit;
  cursor: zoom-in;
  outline-offset: 4px;
}

.device-frame a:focus-visible {
  outline: 3px solid rgba(204, 111, 129, 0.36);
}

.device-frame:hover {
  border-color: rgba(32, 28, 31, 0.22);
}

.device-frame img {
  height: 100%;
  object-fit: cover;
  width: 100%;
}

.phone-frame {
  border-radius: 24px;
  max-width: 276px;
  padding: 4px;
}

.phone-frame img {
  border-radius: 20px;
}

.phone-frame.secondary {
  margin-top: 60px;
}

.ipad-frame {
  border-radius: 18px;
  padding: 5px;
}

.ipad-frame img {
  border-radius: 13px;
}

.section {
  border-bottom: 1px solid var(--line);
  padding: 58px 0;
}

.section-heading {
  align-items: end;
  display: grid;
  gap: 22px;
  grid-template-columns: minmax(0, 0.82fr) minmax(320px, 1fr);
  margin-bottom: 26px;
}

.section-heading p {
  color: var(--muted);
}

.feature-grid,
.security-grid,
.screen-grid,
.usage-steps,
.legal-link-grid,
.faq-grid {
  display: grid;
  gap: 14px;
}

.feature-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.usage-steps {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.security-grid,
.legal-link-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.screen-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.faq-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature-card,
.security-card,
.usage-card,
.legal-card,
.faq-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}

.feature-card p,
.security-card p,
.usage-card p,
.legal-card p,
.faq-card p {
  color: var(--muted);
  font-size: 0.96rem;
  margin: 0;
}

.usage-card {
  display: grid;
  gap: 8px;
}

.step-number {
  align-items: center;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--accent-strong);
  display: inline-flex;
  font-size: 0.82rem;
  font-weight: 900;
  height: 30px;
  justify-content: center;
  width: 30px;
}

.legal-card {
  color: var(--text);
  text-decoration: none;
}

.screen-card {
  margin: 0;
}

.screen-card .phone-frame {
  max-width: none;
}

.screen-card figcaption {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 700;
  margin-top: 10px;
  text-align: center;
}

.gslide-title {
  font: 800 0.95rem/1.4 Inter, ui-sans-serif, system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.wide-shot {
  align-items: center;
  display: grid;
  gap: 28px;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 1fr);
  margin-top: 32px;
}

.wide-shot p {
  color: var(--muted);
}

.legal-page {
  max-width: 900px;
}

.legal-hero {
  border-bottom: 1px solid var(--line);
  padding-bottom: 34px;
}

.legal-meta {
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 700;
}

.legal-content {
  padding-top: 36px;
}

.legal-content section + section {
  border-top: 1px solid var(--line);
  margin-top: 28px;
  padding-top: 28px;
}

.legal-content h2 {
  font-size: 1.18rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: space-between;
  padding: 28px 0 42px;
}

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

.site-footer a {
  color: var(--muted);
  text-decoration: none;
}

@media (max-width: 860px) {
  .header-inner,
  .header-actions,
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-inner {
    padding: 16px 0;
  }

  .hero,
  .section-heading,
  .wide-shot {
    grid-template-columns: 1fr;
  }

  .hero-media {
    grid-template-columns: 1fr 1fr;
  }

  h1 {
    font-size: 2.35rem;
  }

  .feature-grid,
  .usage-steps,
  .security-grid,
  .legal-link-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .screen-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .header-inner,
  .main,
  .site-footer {
    width: min(100% - 24px, 1120px);
  }

  .main {
    padding-top: 38px;
  }

  .hero-media,
  .screen-grid {
    grid-template-columns: 1fr;
  }

  .phone-frame {
    margin-inline: auto;
    max-width: 300px;
  }

  .phone-frame.secondary {
    margin-top: 0;
  }

  h1 {
    font-size: 2.05rem;
  }
}