:root {
  --bg: #ffffff;
  --bg-soft: #f7f8fa;
  --text: #1f2937;
  --text-sub: #4b5563;
  --primary: #183b66;
  --primary-deep: #102a43;
  --border: #e5e7eb;
  --container: 1120px;
  --radius: 14px;
  --shadow-soft: 0 12px 30px rgba(16, 42, 67, 0.06);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.7;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  z-index: 1000;
}

.skip-link:focus-visible {
  top: 16px;
}

.container {
  width: min(var(--container), 100% - 48px);
  margin-inline: auto;
}

.section {
  padding: 84px 0;
}

.section-soft {
  background: var(--bg-soft);
}

.section-title {
  margin: 0 0 18px;
  font-size: clamp(1.7rem, 2.2vw, 2.05rem);
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.section-intro {
  margin: 0;
  max-width: 760px;
  color: var(--text-sub);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(229, 231, 235, 0.92);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 86px;
}

.brand {
  flex-shrink: 0;
}

.brand img {
  width: clamp(170px, 22vw, 260px);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-weight: 600;
  color: var(--text-sub);
}

.site-nav a {
  position: relative;
  padding: 8px 0;
  transition: color 0.2s ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--primary);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.hero {
  padding: 98px 0 76px;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  margin: 0 0 18px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--primary);
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.hero__title {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.24;
  letter-spacing: 0.01em;
}

.hero__text {
  margin: 24px 0 0;
  max-width: 60ch;
  color: var(--text-sub);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 170px;
  padding: 13px 22px;
  border: 1px solid transparent;
  border-radius: 10px;
  font-weight: 700;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease,
    color 0.18s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 10px 20px rgba(16, 42, 67, 0.16);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--primary-deep);
  box-shadow: 0 14px 26px rgba(16, 42, 67, 0.22);
}

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

.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: #bed1e6;
  background: #f8fbff;
}

.hero__visual {
  position: relative;
  min-height: 430px;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 10px);
  padding: 24px;
  background:
    radial-gradient(circle at top left, rgba(167, 194, 224, 0.22), transparent 38%),
    linear-gradient(180deg, #f8fbff 0%, #eef4fa 100%);
  box-shadow: var(--shadow-soft);
}

.hero__visual-label {
  margin: 0 0 16px;
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.workflow-card {
  position: relative;
  padding: 18px 18px 18px 62px;
  border: 1px solid rgba(24, 59, 102, 0.12);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
}

.workflow-card + .workflow-card {
  margin-top: 14px;
}

.workflow-card::after {
  content: "";
  position: absolute;
  left: 28px;
  top: 100%;
  width: 1px;
  height: 14px;
  background: rgba(24, 59, 102, 0.2);
}

.workflow-card:last-of-type::after {
  display: none;
}

.workflow-card--offset {
  margin-left: 24px;
}

.workflow-card--accent {
  border-color: rgba(24, 59, 102, 0.2);
  background: linear-gradient(180deg, #ffffff 0%, #f3f8fe 100%);
}

.workflow-step {
  position: absolute;
  left: 16px;
  top: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 800;
}

.workflow-card h2 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.45;
}

.workflow-card p {
  margin: 8px 0 0;
  color: var(--text-sub);
  font-size: 0.94rem;
  line-height: 1.65;
}

.workflow-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.workflow-tags li {
  padding: 7px 12px;
  border: 1px solid rgba(24, 59, 102, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.cards {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

.cards--four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.cards--two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.card h3 {
  margin: 0;
  font-size: 1.06rem;
  line-height: 1.5;
}

.card p {
  margin: 10px 0 0;
  color: var(--text-sub);
}

.card:hover,
.card:focus-within {
  border-color: #bfd0e3;
  box-shadow: var(--shadow-soft);
  transform: translateY(-2px);
}

.company-table {
  margin: 30px 0 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.company-table div {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 16px;
  padding: 16px 22px;
  border-top: 1px solid var(--border);
  background: #fff;
}

.company-table div:first-child {
  border-top: 0;
}

.company-table dt {
  margin: 0;
  font-weight: 700;
  color: var(--primary);
}

.company-table dd {
  margin: 0;
}

.contact-box {
  margin-top: 26px;
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 2px);
  background: #fff;
}

.contact-box p {
  margin: 0;
  color: var(--text-sub);
}

.contact-box .btn {
  margin-top: 20px;
}

.contact-mail {
  margin-top: 14px;
  font-size: 0.94rem;
  color: var(--primary);
}

.site-footer {
  border-top: 1px solid var(--border);
  background: #fbfbfd;
  padding-top: 28px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 18px;
}

.footer-inner p {
  margin: 0;
  font-weight: 700;
}

.footer-links {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-links a {
  color: var(--text-sub);
  transition: color 0.2s ease;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--primary);
}

.copyright {
  margin: 0;
  padding: 0 24px 24px;
  color: #6b7280;
  text-align: center;
  font-size: 0.9rem;
}

.page-title {
  margin: 0 0 26px;
  font-size: clamp(1.9rem, 2.8vw, 2.4rem);
}

.policy-page {
  padding-top: 66px;
}

.policy-content {
  max-width: 880px;
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
}

.policy-content h2 {
  margin: 34px 0 10px;
  font-size: 1.24rem;
}

.policy-content p,
.policy-content ul {
  margin: 0;
  color: var(--text-sub);
}

.policy-content ul {
  padding-left: 1.25rem;
}

.policy-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

:focus-visible {
  outline: 3px solid #8eb4dc;
  outline-offset: 2px;
}

@media (max-width: 1080px) {
  .cards--four {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero__inner {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .hero__visual {
    min-height: auto;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(var(--container), 100% - 32px);
  }

  .section {
    padding: 68px 0;
  }

  .header-inner {
    min-height: 74px;
    flex-wrap: wrap;
    justify-content: center;
    padding: 14px 0;
  }

  .site-nav {
    width: 100%;
    justify-content: center;
    gap: 20px;
    font-size: 0.95rem;
  }

  .hero {
    padding-top: 72px;
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__visual {
    padding: 18px;
  }

  .workflow-card {
    padding-left: 58px;
  }

  .workflow-card--offset {
    margin-left: 0;
  }

  .btn {
    width: 100%;
  }

  .cards--two,
  .cards--four {
    grid-template-columns: 1fr;
  }

  .company-table div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .policy-content {
    padding: 22px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}