:root {
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --surface: #ffffff;
  --surface-muted: #f8fafc;
  --accent: #0d9488;
  --accent-hover: #0f766e;
  --accent-soft: #ccfbf1;
  --content: 60rem;
  --gutter: 1.25rem;
  --radius-lg: 1.25rem;
  --radius-md: 0.875rem;
  --shadow-card: 0 1px 2px rgb(15 23 42 / 4%), 0 10px 28px rgb(15 23 42 / 6%);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Yu Gothic UI",
    sans-serif;
  line-height: 1.7;
  color: var(--ink);
  background-color: #f4f7fb;
  background-image:
    radial-gradient(ellipse 120% 80% at 50% -20%, rgba(204, 251, 241, 0.5), transparent 52%),
    radial-gradient(ellipse 70% 45% at 100% 0%, rgba(224, 231, 255, 0.3), transparent 48%),
    linear-gradient(180deg, #f8fafc 0%, #eef2f7 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--accent-hover);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

img {
  max-width: 100%;
  height: auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--ink);
  color: #fff;
  text-decoration: none;
  border-radius: 0 0 var(--radius-md) 0;
}

.skip-link:focus {
  left: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(226, 232, 240, 0.95);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(14px) saturate(1.3);
}

.site-header__inner {
  max-width: var(--content);
  margin: 0 auto;
  padding: 1rem var(--gutter);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-title {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.site-title a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: inherit;
  text-decoration: none;
}

.site-title a::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #14b8a6);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.site-title a:hover {
  color: var(--accent-hover);
}

nav[aria-label="メイン"] {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

nav[aria-label="メイン"] a {
  padding: 0.45rem 0.8rem;
  border-radius: 0.5rem;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
}

nav[aria-label="メイン"] a:hover {
  background: rgba(13, 148, 136, 0.09);
  color: var(--accent-hover);
}

nav[aria-label="メイン"] a[aria-current="page"] {
  background: rgba(13, 148, 136, 0.12);
  color: var(--accent-hover);
  font-weight: 600;
}

.page-main {
  flex: 1;
  width: 100%;
  padding: 2.25rem var(--gutter) 3.5rem;
}

.page-content {
  width: 100%;
  max-width: var(--content);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.page-card {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.75);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 2.25rem);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(10px);
}

.page-head {
  margin-bottom: 1.75rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.page-head h1 {
  margin: 0;
  font-size: clamp(1.375rem, 3vw, 1.625rem);
  letter-spacing: -0.01em;
}

.page-head p {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.9375rem;
}

.hero {
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -5rem;
  right: -3rem;
  width: 16rem;
  height: 16rem;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(204, 251, 241, 0.55), rgba(226, 232, 240, 0.2));
  filter: blur(28px);
  pointer-events: none;
}

.hero__eyebrow {
  position: relative;
  margin: 0;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(13, 148, 136, 0.92);
}

.hero h1 {
  position: relative;
  margin: 0.875rem 0 0;
  font-size: clamp(1.875rem, 5vw, 2.625rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
  font-weight: 700;
}

.hero__lead {
  position: relative;
  margin: 1.25rem 0 0;
  max-width: 34rem;
  font-size: 1.0625rem;
  color: var(--muted);
}

.cta-row {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.15rem;
  border-radius: 0.625rem;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.btn--primary {
  color: #fff;
  background: var(--accent);
  border: 1px solid var(--accent);
}

.btn--primary:hover {
  color: #fff;
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn--secondary {
  color: var(--accent-hover);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line);
}

.btn--secondary:hover {
  color: var(--accent-hover);
  background: var(--accent-soft);
  border-color: rgba(13, 148, 136, 0.25);
}

.section__label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0 0 0.5rem;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.section__label::before {
  content: "";
  width: 2rem;
  height: 1px;
  background: linear-gradient(90deg, rgba(13, 148, 136, 0.65), transparent);
}

.section h2 {
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}

.value-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
  padding: 0;
  list-style: none;
}

@media (min-width: 640px) {
  .value-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.value-grid li {
  padding: 1.25rem 1.125rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(248, 250, 252, 0.85);
}

.value-grid h3 {
  margin: 0;
  font-size: 0.9375rem;
}

.value-grid p {
  margin: 0.5rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--muted);
}

.product-card {
  margin-top: 1.5rem;
  display: grid;
  gap: 1.5rem;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, var(--surface-muted) 0%, rgba(204, 251, 241, 0.22) 100%);
}

@media (min-width: 640px) {
  .product-card {
    grid-template-columns: minmax(0, 10rem) 1fr;
    align-items: center;
    padding: 1.75rem;
  }
}

.product-card__logo {
  filter: drop-shadow(0 2px 10px rgba(15, 23, 42, 0.1));
}

.product-card h3 {
  margin: 0;
  font-size: 1.0625rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.product-card__badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--accent-hover);
  background: var(--accent-soft);
}

.product-card p {
  margin: 0.625rem 0 0;
  font-size: 0.9375rem;
  color: var(--muted);
}

.product-card__meta {
  margin-top: 0.75rem;
  font-size: 0.75rem;
  color: var(--muted);
}

.info-list {
  margin: 0;
  padding: 0;
}

.info-list > div {
  display: grid;
  gap: 0.35rem;
  padding: 1.125rem 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 520px) {
  .info-list > div {
    grid-template-columns: 7.5rem 1fr;
    gap: 1.25rem;
    align-items: start;
  }
}

.info-list > div:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.info-list dt {
  margin: 0;
  font-weight: 600;
  font-size: 0.8125rem;
  color: var(--ink);
}

.info-list dd {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--muted);
}

.contact-block {
  margin-top: 1.5rem;
  padding: 1.5rem 1.375rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: var(--surface-muted);
}

.contact-block__label {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.contact-block__email {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.01em;
}

.contact-block__email:hover {
  text-decoration: underline;
}

.contact-note {
  margin: 1.25rem 0 0;
  padding: 1rem 1.125rem;
  border-radius: var(--radius-md);
  border: 1px dashed rgba(100, 116, 139, 0.35);
  background: rgba(255, 255, 255, 0.55);
  font-size: 0.8125rem;
  color: var(--muted);
}

.contact-note p {
  margin: 0;
}

.contact-address {
  margin: 1.25rem 0 0;
  font-size: 0.9375rem;
  color: var(--muted);
  line-height: 1.75;
}

.prose {
  font-size: 0.9375rem;
  color: var(--muted);
}

.prose section + section {
  margin-top: 1.75rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
}

.prose h2 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  color: var(--ink);
}

.prose p {
  margin: 0;
  line-height: 1.75;
}

.prose p + p {
  margin-top: 0.75rem;
}

.page-card h2 + .prose {
  margin-top: 1.25rem;
}

.prose + .info-list {
  margin-top: 1.75rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
}

.site-footer {
  margin-top: auto;
  border-top: 1px solid rgba(226, 232, 240, 0.95);
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(10px);
}

.site-footer__inner {
  max-width: var(--content);
  margin: 0 auto;
  padding: 1.75rem var(--gutter) 2.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-footer__copy {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--muted);
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}

.site-footer nav a {
  font-size: 0.8125rem;
  color: var(--muted);
  text-decoration: none;
}

.site-footer nav a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}