:root {
  color-scheme: light;
  --page: #f4f4fa;
  --surface: rgba(255, 255, 255, 0.72);
  --surface-solid: #ffffff;
  --ink: #17171c;
  --muted: #6d6d78;
  --line: rgba(43, 42, 58, 0.1);
  --indigo: #5d54f6;
  --indigo-soft: #ebe9ff;
  --coral: #ff6b5f;
  --cyan: #24c7df;
  --shadow: 0 28px 90px rgba(44, 42, 78, 0.14);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 4%, rgba(255, 255, 255, 0.98), transparent 30rem),
    radial-gradient(circle at 91% 18%, rgba(36, 199, 223, 0.14), transparent 26rem),
    radial-gradient(circle at 22% 74%, rgba(255, 107, 95, 0.11), transparent 30rem),
    linear-gradient(145deg, #f8f8fc, var(--page));
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-underline-offset: 0.22em; transition: color 120ms ease-out, transform 120ms ease-out; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--cyan); outline-offset: 4px; border-radius: 8px; }
a:active { transform: scale(0.97); }
img { max-width: 100%; }

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

.site-header {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: inherit;
  font-weight: 760;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  box-shadow: 0 8px 22px rgba(36, 35, 58, 0.16);
}

.platform-badge, .pill, .fact, .product-chip {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.58);
}

.platform-badge {
  min-height: 24px;
  padding: 2px 9px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px 20px; }
nav a, footer a, .text-links a { min-height: 44px; display: inline-flex; align-items: center; }

.hero {
  min-height: min(780px, calc(100vh - 76px));
  display: grid;
  grid-template-columns: minmax(0, 1.14fr) minmax(300px, 0.86fr);
  align-items: center;
  gap: clamp(38px, 8vw, 108px);
  padding: 52px 0 86px;
}

.hero-icon {
  width: 104px;
  height: 104px;
  border-radius: 25px;
  box-shadow: 0 22px 58px rgba(45, 43, 75, 0.2);
}

.eyebrow {
  margin: 22px 0 14px;
  color: var(--indigo);
  font-size: 0.72rem;
  font-weight: 820;
  letter-spacing: 0.19em;
}

h1, h2, h3, p { overflow-wrap: anywhere; }
h1 {
  margin: 0;
  max-width: 720px;
  font-size: clamp(3rem, 6.6vw, 5.9rem);
  font-weight: 720;
  line-height: 0.98;
  letter-spacing: -0.066em;
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 4.8vw, 4.2rem);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.05em;
}

h3 { margin: 0; font-size: 1.08rem; line-height: 1.3; }

.lead { margin: 28px 0 0; max-width: 670px; color: var(--muted); font-size: clamp(1rem, 1.65vw, 1.18rem); }
.lead-ja { margin: 10px 0 0; color: #84848d; font-size: 0.94rem; }

.facts { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.fact { padding: 7px 13px; color: #53535e; font-size: 0.84rem; font-weight: 620; }

.hero-shot, .screen-card {
  margin: 0;
  overflow: hidden;
  background: var(--surface-solid);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
}

.hero-shot {
  width: min(100%, 382px);
  justify-self: center;
  border-radius: 44px;
  transform: rotate(1.2deg);
}

.hero-shot img, .screen-card img { display: block; width: 100%; height: auto; }

.section { padding: clamp(76px, 11vw, 136px) 0; }
.section-head { max-width: 790px; }
.section-copy { margin: 22px 0 0; max-width: 760px; color: var(--muted); font-size: 1.04rem; }

.product-list { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 34px; }
.product-chip { min-height: 38px; padding: 7px 13px; color: #474750; font-size: 0.86rem; font-weight: 670; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 42px;
}

.feature-card, .glass-card, .content-card {
  border: 1px solid rgba(255, 255, 255, 0.85);
  background: var(--surface);
  box-shadow: 0 18px 58px rgba(48, 46, 78, 0.075);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.feature-card { min-height: 205px; padding: 25px; border-radius: 27px; }
.feature-card p { margin: 10px 0 0; color: var(--muted); font-size: 0.93rem; }
.feature-icon {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  border-radius: 12px;
  color: var(--indigo);
  background: var(--indigo-soft);
  font-size: 1.05rem;
  font-weight: 820;
}

.screen-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  align-items: start;
  gap: clamp(16px, 3vw, 34px);
  margin-top: 44px;
}

.screen-card { border-radius: 38px; }
.screen-card:nth-child(2) { transform: translateY(34px); }
.screen-card figcaption { padding: 14px 18px 17px; color: var(--muted); text-align: center; font-size: 0.84rem; }

.glass-card {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(270px, 0.92fr);
  gap: clamp(28px, 7vw, 86px);
  padding: clamp(34px, 6vw, 72px);
  border-radius: 42px;
}

.glass-card p { margin: 20px 0 0; color: var(--muted); }
.language-list { display: flex; flex-wrap: wrap; align-content: center; gap: 9px; }
.pill { padding: 7px 12px; color: #555560; font-size: 0.84rem; }

.quiet-card { margin: clamp(76px, 11vw, 142px) 0; text-align: center; }
.quiet-card h2 { max-width: 800px; margin-inline: auto; }
.quiet-card > p:not(.eyebrow) { max-width: 720px; margin: 24px auto 0; color: var(--muted); }
.text-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 24px; margin-top: 20px; }

.content-card {
  max-width: 860px;
  margin: clamp(58px, 9vw, 108px) auto;
  padding: clamp(30px, 6vw, 70px);
  border-radius: 40px;
}

.content-card h1 { font-size: clamp(2.65rem, 7vw, 5rem); margin-bottom: 28px; }
.content-card h2 { margin-top: 46px; font-size: clamp(1.55rem, 3.4vw, 2.45rem); }
.content-card h3 { margin-top: 30px; }
.content-card p, .content-card li { color: var(--muted); }
.content-card .updated { color: var(--indigo); font-weight: 650; }
.content-card code { padding: 0.14em 0.4em; border-radius: 6px; background: var(--indigo-soft); color: #4a43bb; }
.language-divider { margin: 58px 0; border: 0; border-top: 1px solid var(--line); }
.notice { margin-top: 30px; padding: 20px 22px; border-radius: 20px; background: rgba(93, 84, 246, 0.075); color: #555366; }

footer {
  min-height: 100px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 0.86rem;
}

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; min-height: 0; padding-top: 42px; }
  .hero-copy { text-align: center; }
  .hero-icon { width: 92px; height: 92px; }
  .lead, .lead-ja { margin-inline: auto; }
  .facts, .product-list { justify-content: center; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .screen-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .screen-card:nth-child(2) { transform: none; }
  .glass-card { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .site-header, main, footer { width: min(100% - 24px, 1120px); }
  .site-header { min-height: 68px; gap: 8px; }
  .brand span:not(.platform-badge) { display: none; }
  nav { gap: 4px 8px; font-size: 0.78rem; }
  h1 { font-size: clamp(2.75rem, 14vw, 4.4rem); }
  .hero { gap: 46px; padding-bottom: 58px; }
  .hero-shot { width: min(88vw, 350px); }
  .feature-grid { grid-template-columns: 1fr; }
  .screen-grid { grid-template-columns: 1fr; justify-items: center; }
  .screen-card { width: min(88vw, 350px); }
  .screen-card:nth-child(2) { transform: none; }
  .content-card { border-radius: 28px; }
  footer { flex-direction: column; align-items: flex-start; justify-content: center; padding: 24px 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  a { transition: none; }
  a:active { transform: none; }
  .hero-shot, .screen-card:nth-child(2) { transform: none; }
}

@media (prefers-reduced-transparency: reduce) {
  .feature-card, .glass-card, .content-card,
  .platform-badge, .pill, .fact, .product-chip {
    background: var(--surface-solid);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

@media (prefers-contrast: more) {
  :root { --muted: #45454e; --line: rgba(23, 23, 28, 0.42); }
  .feature-card, .glass-card, .content-card,
  .platform-badge, .pill, .fact, .product-chip,
  .hero-shot, .screen-card { border-color: var(--line); }
}