:root {
  color-scheme: light;
  --ink: #151719;
  --muted: #62676d;
  --line: #dfe2e5;
  --soft: #f4f5f6;
  --paper: #ffffff;
  --mint: #147d72;
  --mint-soft: #dff4ef;
  --gold: #9a6b00;
  --gold-soft: #fff2c7;
  --max: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  letter-spacing: 0;
}

body {
  margin: 0;
  min-width: 320px;
}

a {
  color: inherit;
}

a:focus-visible,
summary:focus-visible {
  outline: 3px solid #5dc3b4;
  outline-offset: 3px;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.96);
}

.nav,
.masthead,
.section-inner,
.legal,
.footer-inner {
  width: min(calc(100% - 40px), var(--max));
  margin-inline: auto;
}

.nav {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 700;
  text-decoration: none;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 18px;
  font-size: 14px;
  font-weight: 600;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
}

.nav-links a[aria-current="page"],
.nav-links a:hover {
  color: var(--ink);
}

.masthead {
  min-height: 500px;
  display: flex;
  align-items: center;
  padding-block: 72px;
}

.masthead-content {
  max-width: 760px;
}

.app-icon {
  width: 112px;
  height: 112px;
  border-radius: 24px;
  box-shadow: 0 18px 50px rgba(25, 32, 36, 0.16);
}

.eyebrow {
  margin: 24px 0 8px;
  color: var(--mint);
  font-size: 14px;
  font-weight: 750;
  text-transform: uppercase;
}

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

h1 {
  max-width: 720px;
  margin-bottom: 16px;
  font-size: clamp(42px, 7vw, 72px);
  line-height: 1.02;
  letter-spacing: 0;
}

.lead {
  max-width: 680px;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 21px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 18px;
  border: 1px solid var(--ink);
  border-radius: 8px;
  background: var(--ink);
  color: #ffffff;
  font-weight: 700;
  text-decoration: none;
}

.button.secondary {
  border-color: var(--line);
  background: var(--paper);
  color: var(--ink);
}

.band {
  border-top: 1px solid var(--line);
  padding-block: 64px;
}

.band.soft {
  background: var(--soft);
}

.section-heading {
  max-width: 700px;
  margin-bottom: 32px;
}

.section-heading h2,
.legal h1 {
  margin-bottom: 10px;
  font-size: 34px;
  line-height: 1.12;
}

.section-heading p,
.legal-intro {
  color: var(--muted);
  font-size: 18px;
}

.trust-grid,
.topic-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.trust-item,
.topic {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  padding: 22px;
}

.trust-item strong,
.topic h3 {
  display: block;
  margin-bottom: 7px;
  font-size: 18px;
}

.trust-item p,
.topic p {
  margin-bottom: 0;
  color: var(--muted);
}

.marker {
  width: 34px;
  height: 6px;
  display: block;
  margin-bottom: 18px;
  border-radius: 3px;
  background: var(--mint);
}

.marker.gold {
  background: var(--gold);
}

.marker.dark {
  background: var(--ink);
}

.pricing-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
}

th,
td {
  padding: 17px 20px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

th {
  background: #f8f9f9;
  font-size: 14px;
}

tr:last-child td {
  border-bottom: 0;
}

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

.faq {
  border-top: 1px solid var(--line);
}

details {
  border-bottom: 1px solid var(--line);
  padding-block: 18px;
}

summary {
  cursor: pointer;
  font-weight: 700;
}

details p {
  max-width: 760px;
  margin: 12px 0 0;
  color: var(--muted);
}

.legal {
  max-width: 820px;
  padding-block: 64px 90px;
}

.legal h1 {
  font-size: 44px;
}

.legal h2 {
  margin: 42px 0 10px;
  font-size: 24px;
}

.legal p,
.legal li {
  color: #44494e;
}

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

.legal-meta {
  margin-bottom: 34px;
  color: var(--muted);
}

.callout {
  margin-block: 28px;
  padding: 18px 20px;
  border-left: 5px solid var(--mint);
  background: var(--mint-soft);
}

.callout p {
  margin: 0;
  color: var(--ink);
}

.site-footer {
  background: var(--ink);
  color: #ffffff;
}

.footer-inner {
  min-height: 150px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-inner p {
  margin: 0;
  color: #c8cccf;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links a {
  color: #ffffff;
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
    padding-block: 14px;
  }

  .nav-links {
    max-width: 220px;
    flex-wrap: wrap;
    gap: 8px 14px;
  }

  .masthead {
    min-height: 560px;
    padding-block: 58px;
  }

  .app-icon {
    width: 96px;
    height: 96px;
    border-radius: 21px;
  }

  h1 {
    font-size: 46px;
  }

  html[lang="ja"] .masthead h1 {
    font-size: 40px;
  }

  .lead {
    font-size: 18px;
  }

  .trust-grid,
  .topic-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding-block: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}