:root {
  color-scheme: light dark;
  --canvas: #f2f6fc;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-solid: #ffffff;
  --ink: #0d1b2e;
  --secondary: #64748a;
  --line: rgba(13, 27, 46, 0.1);
  --accent: #0877f9;
  --accent-soft: #e8f2ff;
  --shadow: 0 24px 60px rgba(44, 79, 125, 0.12);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic UI", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--canvas);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 0%, rgba(114, 195, 255, 0.2), transparent 32rem),
    radial-gradient(circle at 96% 28%, rgba(8, 119, 249, 0.1), transparent 28rem),
    var(--canvas);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-underline-offset: 0.2em;
}

.page-shell {
  width: min(100% - 40px, 880px);
  margin: 0 auto;
  padding: clamp(56px, 10vw, 120px) 0 40px;
}

.hero {
  max-width: 680px;
  padding: clamp(24px, 5vw, 48px) 0 clamp(64px, 10vw, 108px);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  font-size: clamp(3rem, 11vw, 6.5rem);
  font-weight: 720;
  letter-spacing: -0.055em;
  line-height: 1.04;
}

.lead {
  margin: 24px 0 0;
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.summary {
  max-width: 590px;
  margin: 18px 0 0;
  color: var(--secondary);
  font-size: 1.05rem;
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.link-card {
  display: grid;
  min-height: 210px;
  padding: 26px;
  color: var(--ink);
  text-decoration: none;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: 30px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.link-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 30px 70px rgba(44, 79, 125, 0.16);
}

.link-card:active {
  transform: scale(0.985);
}

.link-card:focus-visible,
.mail-button:focus-visible,
.top-nav a:focus-visible {
  outline: 3px solid rgba(8, 119, 249, 0.4);
  outline-offset: 4px;
}

.card-number {
  align-self: start;
  color: var(--secondary);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
}

.link-card strong,
.link-card small {
  display: block;
}

.link-card strong {
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.link-card small {
  margin-top: 6px;
  color: var(--secondary);
  font-size: 0.88rem;
}

.arrow {
  align-self: end;
  justify-self: end;
  color: var(--accent);
  font-size: 1.35rem;
}

.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: clamp(56px, 9vw, 96px);
}

.top-nav a {
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 650;
  text-decoration: none;
}

.top-nav a:last-child {
  color: var(--secondary);
}

.document-shell {
  max-width: 760px;
  padding-top: 34px;
}

.document-header {
  margin-bottom: clamp(52px, 8vw, 80px);
}

.document-header h1 {
  font-size: clamp(2.5rem, 8vw, 5rem);
}

.updated {
  margin: 20px 0 0;
  color: var(--secondary);
  font-size: 0.88rem;
}

.document {
  padding: clamp(28px, 6vw, 58px);
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.86);
  border-radius: 34px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
}

.document > p:first-child {
  margin-top: 0;
  font-size: 1.05rem;
}

.document section {
  padding-top: 36px;
  margin-top: 36px;
  border-top: 1px solid var(--line);
}

.document h2 {
  margin: 0 0 12px;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  line-height: 1.4;
}

.document p {
  margin: 0;
  color: var(--secondary);
}

.steps {
  padding-left: 1.4em;
  margin: 0;
  color: var(--secondary);
}

.steps li + li {
  margin-top: 12px;
}

.faq-list details {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.faq-list details:last-child {
  border-bottom: 0;
}

.faq-list summary {
  cursor: pointer;
  color: var(--ink);
  font-weight: 650;
}

.faq-list details p {
  padding-top: 14px;
}

.contact-card {
  padding: 28px;
  background: var(--accent-soft);
  border: 0 !important;
  border-radius: 24px;
}

.mail-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  margin-top: 24px;
  color: #ffffff;
  font-weight: 700;
  text-decoration: none;
  background: var(--accent);
  border-radius: 16px;
}

.mail-address {
  margin-top: 12px !important;
  font-size: 0.82rem;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 36px 4px 0;
  color: var(--secondary);
  font-size: 0.8rem;
}

.site-footer a {
  color: inherit;
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100% - 28px, 880px);
  }

  .link-grid {
    grid-template-columns: 1fr;
  }

  .link-card {
    min-height: 180px;
    border-radius: 26px;
  }

  .document {
    border-radius: 28px;
  }

  .site-footer {
    flex-direction: column;
    gap: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .link-card,
  .document {
    background: var(--surface-solid);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --canvas: #07101d;
    --surface: rgba(17, 29, 46, 0.8);
    --surface-solid: #111d2e;
    --ink: #f5f8fc;
    --secondary: #9eacc0;
    --line: rgba(229, 237, 248, 0.12);
    --accent: #72c3ff;
    --accent-soft: rgba(34, 111, 176, 0.2);
    --shadow: 0 26px 70px rgba(0, 0, 0, 0.26);
  }

  body {
    background:
      radial-gradient(circle at 12% 0%, rgba(32, 132, 225, 0.2), transparent 32rem),
      radial-gradient(circle at 96% 28%, rgba(114, 195, 255, 0.08), transparent 28rem),
      var(--canvas);
  }

  .link-card,
  .document {
    border-color: rgba(255, 255, 255, 0.08);
  }
}