:root {
  color-scheme: light;
  --bg: #f7f7f4;
  --surface: #ffffff;
  --ink: #1f2328;
  --muted: #5b636d;
  --line: #d8dee4;
  --line-strong: #c5ccd3;
  --accent: #0f4c81;
  --accent-soft: #eef4f9;
  --max-width: 860px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: "Avenir Next", "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif;
  line-height: 1.72;
  overflow-wrap: anywhere;
}

img {
  max-width: 100%;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

code {
  font-family: "SF Mono", "Menlo", monospace;
  font-size: 0.92em;
}

.page-shell {
  width: min(var(--max-width), calc(100% - 40px));
  margin: 0 auto;
  padding: 42px 0 64px;
}

.hero,
.page-header {
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.eyebrow,
.card-kicker,
.section-kicker,
.meta-list dt {
  margin: 0 0 10px;
  color: var(--muted);
  font-family: "Avenir Next", "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}

.brand-link {
  color: inherit;
  text-decoration: none;
}

.brand-link:hover {
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.card-kicker,
.section-kicker {
  margin-bottom: 16px;
}

.panel > .section-kicker:first-child,
.card > .card-kicker:first-child {
  margin-top: -2px;
  margin-bottom: 22px;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.18;
  font-weight: 600;
}

h1 {
  font-size: clamp(2rem, 3.3vw, 3rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

h3 {
  font-size: 1.16rem;
  margin: 22px 0 8px;
}

.hero-copy,
.page-lead,
.lede,
.card p,
.panel p,
.panel li {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 1rem;
}

.content-grid,
.detail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 28px;
}

.card,
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 24px 26px;
}

.app-showcase {
  margin-top: 26px;
}

.showcase-card {
  position: relative;
  overflow: hidden;
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(247, 250, 253, 0.96));
  box-shadow:
    0 18px 44px rgba(27, 39, 55, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.showcase-card::before,
.showcase-card::after {
  content: "";
  position: absolute;
  inset: auto;
  border-radius: 20px;
  pointer-events: none;
}

.showcase-card::before {
  width: 140px;
  height: 140px;
  top: -42px;
  right: -24px;
  background: radial-gradient(circle, rgba(15, 76, 129, 0.12), rgba(15, 76, 129, 0));
}

.showcase-card::after {
  width: 180px;
  height: 180px;
  bottom: -70px;
  left: -40px;
  background: radial-gradient(circle, rgba(15, 76, 129, 0.08), rgba(15, 76, 129, 0));
}

.showcase-track {
  position: relative;
  overflow: hidden;
  border-radius: 14px;
  padding: 14px;
  background: linear-gradient(180deg, #fbfcff, #eef3f8);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.showcase-viewport {
  overflow: hidden;
  border-radius: 12px;
}

.showcase-card.is-phone .showcase-track {
  max-width: 390px;
  margin: 0 auto;
}

.showcase-slides {
  display: flex;
  transition: transform 260ms ease;
  will-change: transform;
  touch-action: pan-y;
}

.showcase-slide {
  flex: 0 0 100%;
}

.showcase-frame {
  position: relative;
  z-index: 1;
  display: block;
  overflow: hidden;
  border-radius: 12px;
  border: 1px solid rgba(197, 204, 211, 0.8);
  background: #fff;
  box-shadow: 0 16px 30px rgba(31, 35, 40, 0.12);
}

.showcase-frame img {
  display: block;
  width: 100%;
  height: auto;
}

.showcase-controls {
  position: absolute;
  inset: 50% 10px auto 10px;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  transform: translateY(-50%);
  pointer-events: none;
}

.showcase-arrow {
  pointer-events: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(197, 204, 211, 0.88);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--ink);
  font-size: 1rem;
  line-height: 1;
  box-shadow: 0 8px 18px rgba(31, 35, 40, 0.12);
  cursor: pointer;
}

.showcase-arrow:hover {
  background: #fff;
}

.showcase-dots {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 14px;
}

.showcase-dots span {
  display: block;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(91, 99, 109, 0.22);
  transition: all 180ms ease;
}

.showcase-dots button {
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.showcase-dots button[aria-current="true"] span {
  width: 22px;
  background: var(--accent);
}

.card-actions,
.button-row,
.nav-links,
.language-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
}

.language-switch {
  justify-content: flex-end;
  color: var(--muted);
  font-family: "Avenir Next", "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif;
  font-size: 0.86rem;
}

.language-switch a {
  color: var(--muted);
}

.language-switch .current {
  color: var(--ink);
  font-weight: 600;
}

.card-actions,
.button-row {
  margin-top: 18px;
}

.button,
.button-secondary {
  display: inline-flex;
  align-items: center;
  max-width: 100%;
  min-height: 38px;
  padding: 0 12px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: #fff;
  color: var(--ink);
  font-family: "Avenir Next", "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
}

.button:hover,
.button-secondary:hover {
  background: var(--accent-soft);
  text-decoration: none;
}

.text-link {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  font-size: 0.95rem;
}

.app-title-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.app-title-row h1,
.app-title-row h2 {
  margin: 0;
}

.app-card.is-coming-soon {
  position: relative;
  overflow: hidden;
}

.app-card.is-coming-soon > :not(.availability-overlay) {
  opacity: 0.3;
  filter: grayscale(1);
  pointer-events: none;
  user-select: none;
}

.availability-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(241, 242, 242, 0.42);
  color: #626970;
  font-size: 1.08rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 20px;
  text-align: center;
  text-transform: uppercase;
}

.app-title-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  flex: 0 0 auto;
  margin-top: 1px;
}

.feature-list,
.faq-list,
.policy-list {
  margin: 16px 0 0;
  padding-left: 20px;
}

.faq-list {
  padding-left: 0;
}

.faq-list h3 {
  margin: 24px 0 10px;
  padding: 10px 12px;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  font-size: 1rem;
}

.faq-list h3:first-child {
  margin-top: 0;
}

.faq-list p {
  margin-left: 15px;
}

.guide-figure {
  margin: 18px 0 28px;
}

.guide-figure img {
  display: block;
  width: min(100%, 600px);
  height: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.guide-figure.compact img {
  max-width: 420px;
}

.guide-figure.medium img {
  max-width: 520px;
}

.guide-figure.narrow img {
  width: min(100%, 300px);
}

.guide-figure figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.94rem;
}

.guide-figure-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin: 18px 0 28px;
}

.guide-figure-row .guide-figure {
  margin: 0;
}

.guide-figure-row .guide-figure img {
  width: min(100%, 320px);
}

.meta-list {
  display: grid;
  gap: 0;
  margin: 4px 0 0;
}

.meta-list div {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.meta-list div:first-child {
  border-top: 0;
  padding-top: 0;
}

.meta-list dt {
  margin-bottom: 4px;
}

.meta-list dd {
  margin: 0;
  color: var(--muted);
}

.shortcut-table {
  width: min(100%, 600px);
  margin: 16px 0 0;
  border-collapse: collapse;
  border: 1px solid var(--line);
  background: #fff;
  table-layout: fixed;
}

.shortcut-table th,
.shortcut-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.shortcut-table th {
  width: 34%;
  color: var(--ink);
  font-weight: 600;
  background: var(--accent-soft);
}

.shortcut-table tr:last-child th,
.shortcut-table tr:last-child td {
  border-bottom: 0;
}

.support-note {
  margin-top: 20px;
  padding: 14px 16px;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  color: var(--ink);
}

.warning-note {
  margin-top: 20px;
  padding: 14px 16px;
  border-left: 3px solid #c83b3b;
  background: #fff4f4;
  color: #8f1f1f;
}

.warning-note strong {
  color: #8f1f1f;
}

.site-footer {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.94rem;
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100% - 24px, var(--max-width));
    padding-top: 28px;
  }

  .card,
  .panel {
    padding: 20px;
  }

  .hero,
  .page-header {
    padding-bottom: 18px;
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 14px;
  }

  .language-switch {
    justify-content: flex-start;
  }

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

  .showcase-card {
    padding: 10px 10px 14px;
  }

  .showcase-track {
    padding: 8px;
  }

  .showcase-card.is-phone .showcase-track {
    max-width: 300px;
  }

  .showcase-controls {
    inset-inline: 6px;
  }

  .showcase-arrow {
    width: 32px;
    height: 32px;
  }
}

@media (max-width: 480px) {
  .page-shell {
    width: min(100% - 16px, var(--max-width));
  }

  .card,
  .panel {
    padding: 16px;
  }

  h1 {
    font-size: 1.9rem;
  }

  h2 {
    font-size: 1.3rem;
  }

  .button-row {
    gap: 8px;
  }

  .button-row .button,
  .button-row .button-secondary {
    justify-content: center;
    width: 100%;
  }

  .shortcut-table,
  .shortcut-table tbody,
  .shortcut-table tr,
  .shortcut-table th,
  .shortcut-table td {
    display: block;
    width: 100%;
  }

  .shortcut-table tr {
    border-bottom: 1px solid var(--line);
  }

  .shortcut-table th,
  .shortcut-table td {
    border-bottom: 0;
    padding: 9px 10px;
  }

  .shortcut-table td {
    padding-top: 7px;
  }

  .shortcut-table tr:last-child {
    border-bottom: 0;
  }

  .showcase-card.is-phone .showcase-track {
    max-width: 260px;
  }
}