:root {
  color-scheme: light;
  --ink: #152033;
  --muted: #667085;
  --blue: #1b4b91;
  --blue-light: #eaf2ff;
  --line: #dce5f1;
  --surface: #ffffff;
}

* { box-sizing: border-box; }

html { min-height: 100%; }

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, #edf5ff 0, transparent 28rem),
    linear-gradient(180deg, #f9fbff 0%, #ffffff 58%);
  font-family: "Yu Gothic UI", "Noto Sans JP", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.site-header {
  width: min(960px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 10px;
  color: white;
  background: var(--blue);
  box-shadow: 0 7px 18px rgba(27, 75, 145, .22);
}

main {
  width: min(960px, calc(100% - 40px));
  margin: 0 auto;
  padding: 84px 0 110px;
}

.intro { max-width: 720px; }

.eyebrow {
  margin: 0 0 18px;
  color: var(--blue);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .16em;
}

h1 {
  margin: 0;
  font-size: clamp(2.25rem, 7vw, 4.5rem);
  line-height: 1.18;
  letter-spacing: -.04em;
}

.lead {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.9;
}

.products { margin-top: 82px; }

h2 {
  margin: 0 0 18px;
  font-size: 1rem;
  letter-spacing: .06em;
}

.product-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  max-width: 760px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 24px;
  color: inherit;
  background: rgba(255, 255, 255, .9);
  box-shadow: 0 16px 50px rgba(37, 67, 109, .08);
  text-decoration: none;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.product-card:hover,
.product-card:focus-visible {
  transform: translateY(-4px);
  border-color: #9bb9e2;
  box-shadow: 0 24px 58px rgba(37, 67, 109, .14);
  outline: none;
}

.icon-wrap {
  display: grid;
  width: 132px;
  height: 132px;
  place-items: center;
  border-radius: 28px;
  background: var(--blue-light);
}

.icon-wrap img {
  display: block;
  width: 112px;
  height: 112px;
  object-fit: contain;
}

.product-copy { display: grid; gap: 10px; }

.product-copy strong {
  font-size: 1.65rem;
  letter-spacing: -.02em;
}

.product-copy span {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.75;
}

.link-label {
  padding: 11px 16px;
  border-radius: 999px;
  color: var(--blue);
  background: var(--blue-light);
  font-size: .9rem;
  font-weight: 700;
  white-space: nowrap;
}

.support-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  max-width: 760px;
  margin-top: 42px;
  padding: 30px 32px;
  border-radius: 24px;
  color: #57340d;
  background: linear-gradient(135deg, #fff8df, #fff1c7);
}

.support-link .eyebrow { margin-bottom: 10px; color: #a15b00; }
.support-link h2 { margin-bottom: 10px; font-size: 1.35rem; }
.support-link p:last-child { margin: 0; color: #75532c; line-height: 1.75; }

.support-button {
  flex: 0 0 auto;
  padding: 13px 20px;
  border-radius: 999px;
  color: #fff;
  background: #a15b00;
  font-weight: 700;
  text-decoration: none;
}

.support-button:hover,
.support-button:focus-visible { background: #824900; outline: 3px solid rgba(161, 91, 0, .2); outline-offset: 3px; }

footer {
  width: min(960px, calc(100% - 40px));
  margin: 0 auto;
  padding: 24px 0 36px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

footer a {
  margin-left: 18px;
  color: var(--muted);
  font-size: .85rem;
}

@media (max-width: 640px) {
  .site-header { padding-top: 20px; }
  main { padding: 58px 0 80px; }
  .products { margin-top: 58px; }
  .product-card {
    grid-template-columns: 78px 1fr;
    gap: 18px;
    padding: 20px;
    border-radius: 20px;
  }
  .icon-wrap { width: 78px; height: 78px; border-radius: 18px; }
  .icon-wrap img { width: 66px; height: 66px; }
  .product-copy strong { font-size: 1.35rem; }
  .product-copy span { font-size: .92rem; }
  .link-label { grid-column: 2; justify-self: start; }
  .support-link { align-items: flex-start; flex-direction: column; gap: 22px; padding: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  .product-card { transition: none; }
}