:root {
  --blue: #1f6feb;
  --blue-strong: #1158c7;
  --ink: #07142f;
  --muted: #5b6880;
  --line: #dce5f2;
  --soft: #f6f8fc;
  --surface: #ffffff;
  --green: #137333;
  --amber: #9a6700;
  --red: #c7352c;
  --shadow: 0 24px 72px rgba(7, 20, 47, 0.12);
  color: var(--ink);
  font-family: "Segoe UI Variable", "Segoe UI", "Aptos", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 50% 14%, rgba(31, 111, 235, 0.08), transparent 34%),
    linear-gradient(180deg, #ffffff 0%, #f7f9fd 58%, #ffffff 100%);
  color: var(--ink);
  line-height: 1.55;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 20;
  padding: 10px 14px;
  background: var(--ink);
  color: #ffffff;
}

.skip-link:focus {
  top: 16px;
}

.shell {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  background: rgba(255, 255, 255, 0.86);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
}

.brand {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  color: var(--ink);
  font-weight: 850;
  text-decoration: none;
  letter-spacing: -0.03em;
}

.brand img {
  border-radius: 10px;
}

.language-switch {
  display: inline-flex;
  gap: 3px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px;
  background: rgba(255, 255, 255, 0.88);
}

.language-switch a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  border-radius: 999px;
  padding: 0 14px;
  color: var(--muted);
  font-weight: 850;
  text-decoration: none;
}

.language-switch a.is-current {
  color: #ffffff;
  background: var(--blue);
  box-shadow: 0 10px 22px rgba(31, 111, 235, 0.2);
}

.hero {
  padding: 74px 0 46px;
  text-align: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--blue-strong);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 780px;
  margin: 0 auto 22px;
  font-size: clamp(54px, 8vw, 94px);
  line-height: 0.91;
  letter-spacing: -0.075em;
}

.ja-title span {
  display: block;
  white-space: nowrap;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(34px, 4vw, 56px);
  line-height: 1;
  letter-spacing: -0.06em;
}

h3 {
  margin-bottom: 8px;
  font-size: 20px;
  line-height: 1.15;
  letter-spacing: -0.04em;
}

.lede,
.section-heading p {
  max-width: 670px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.55;
}

.hero .lede {
  margin-right: auto;
  margin-left: auto;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: center;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 20px;
  font-weight: 850;
  text-decoration: none;
}

.button.primary {
  border-color: var(--blue);
  color: #ffffff;
  background: var(--blue);
  box-shadow: 0 18px 34px rgba(31, 111, 235, 0.22);
}

.button.secondary {
  color: var(--ink);
  background: #ffffff;
}

.button.disabled {
  cursor: not-allowed;
  opacity: 0.78;
}

.button.full {
  width: 100%;
}

.button:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(31, 111, 235, 0.34);
  outline-offset: 3px;
}

.note,
.fine-print {
  margin-top: 16px;
  color: var(--muted);
  font-size: 14px;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.section {
  padding: 86px 0 0;
}

.hero + .section {
  padding-top: 52px;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 28px;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.detail-card,
.faq-grid article {
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 22px;
  background: #ffffff;
}

.detail-card .number {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 18px;
  border-radius: 12px;
  color: var(--blue-strong);
  background: #eaf2ff;
  font-size: 13px;
  font-weight: 900;
}

.detail-card p,
.faq-grid p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.55;
}

.safety-band {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  gap: 22px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 32px;
  padding: 34px;
  background: #fbfdff;
}

.safety-list {
  display: grid;
  gap: 10px;
}

.safety-list div {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  min-height: 52px;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0 14px;
  background: #ffffff;
  color: var(--muted);
  font-weight: 750;
}

.safety-list b {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  color: var(--green);
  background: #e8f7ee;
  font-size: 12px;
}

.install-grid,
.pricing-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(340px, 0.55fr);
  gap: 22px;
  align-items: stretch;
}

.install-card,
.price-card {
  padding: 26px;
}

.status-box,
.trial-note,
.price-box {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
  background: #fbfdff;
}

.status-box span,
.price-box span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  font-weight: 850;
  text-transform: uppercase;
}

.status-box strong {
  display: block;
  margin-top: 8px;
  font-size: 24px;
  line-height: 1.1;
  letter-spacing: -0.045em;
}

.stack-actions {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.price-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.price-box strong {
  display: block;
  margin-top: 12px;
  font-size: 42px;
  line-height: 1;
  letter-spacing: -0.065em;
}

.price-box em {
  display: block;
  margin-top: 10px;
  color: var(--primary);
  font-size: 13px;
  font-style: normal;
  font-weight: 800;
  line-height: 1.35;
}

.trial-note {
  margin-bottom: 16px;
  color: var(--muted);
  font-weight: 650;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.footer {
  margin-top: 90px;
  border-top: 1px solid var(--line);
  padding: 30px 0;
}

.footer-grid {
  display: flex;
  gap: 20px;
  align-items: center;
  justify-content: space-between;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  justify-content: flex-end;
}

.footer-links a {
  border-radius: 999px;
  padding: 8px 12px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 750;
  text-decoration: none;
}

@media (max-width: 900px) {
  .detail-grid,
  .safety-band,
  .install-grid,
  .pricing-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .shell {
    width: min(100% - 40px, 1120px);
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
    padding: 18px 0;
  }

  .language-switch {
    width: auto;
  }

  .hero {
    padding-top: 72px;
  }

  h1 {
    font-size: clamp(48px, 15vw, 72px);
  }

  .ja-title {
    font-size: clamp(42px, 11.8vw, 60px);
    line-height: 0.98;
  }

  h2 {
    font-size: clamp(34px, 11vw, 48px);
  }

  .hero-actions,
  .footer-grid,
  .footer-links {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .safety-band,
  .install-card,
  .price-card {
    padding: 22px;
  }

  .price-row {
    grid-template-columns: 1fr;
  }

}