:root {
  --bg: #f3f5f9;
  --surface: #ffffff;
  --surface-muted: #eef2f7;
  --line: #d6dde8;
  --line-strong: #b8c3d4;
  --text: #172033;
  --text-muted: #586176;
  --accent: #2f5bba;
  --accent-deep: #1f438d;
  --accent-soft: rgba(47, 91, 186, 0.1);
  --success: #0f766e;
  --max-width: 1120px;
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --shadow-lg: 0 28px 60px rgba(18, 31, 53, 0.08);
  --shadow-sm: 0 14px 30px rgba(18, 31, 53, 0.05);
  --font-sans: "Yu Gothic UI", "Yu Gothic", "Hiragino Sans", "Meiryo", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: linear-gradient(180deg, #f7f8fb 0%, #eef2f7 100%);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

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

p,
ul,
ol,
dl {
  margin: 0;
}

ul {
  padding-left: 1.25rem;
}

ol {
  padding-left: 1.35rem;
}

li + li {
  margin-top: 0.5rem;
}

.nav-links li + li,
.pill-list li + li {
  margin-top: 0;
}

main {
  display: block;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  background: var(--text);
  color: #fff;
  transform: translateY(calc(-100% - 1.5rem));
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(247, 248, 251, 0.84);
  border-bottom: 1px solid rgba(214, 221, 232, 0.8);
}

.nav-shell {
  width: min(calc(100% - 2rem), var(--max-width));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  min-width: 0;
}

.brand-mark {
  width: 2.75rem;
  height: 2.75rem;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 1rem;
  background: linear-gradient(135deg, #2f5bba 0%, #7c97ec 100%);
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.04em;
  filter: drop-shadow(0 12px 22px rgba(31, 67, 141, 0.16));
}

.brand-mark img {
  display: none;
}

.brand-copy {
  min-width: 0;
}

.brand-copy strong,
.footer-brand strong {
  display: block;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
}

.brand-copy span,
.footer-brand span {
  display: block;
  color: var(--text-muted);
  font-size: 0.78rem;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  padding: 0.7rem 1rem;
  font: inherit;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  list-style: none;
  padding: 0;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0 1rem;
  border-radius: 999px;
  color: var(--text-muted);
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  background: var(--surface);
  color: var(--text);
}

.nav-links .is-active {
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-weight: 600;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0 1.2rem;
  border-radius: 999px;
  border: 1px solid rgba(214, 221, 232, 0.95);
  background: rgba(255, 255, 255, 0.7);
  color: var(--text-muted);
  font-weight: 500;
}

.nav-cta:hover,
.nav-cta:focus-visible {
  border-color: var(--line-strong);
  background: var(--surface);
  color: var(--text);
}

.nav-cta.is-active {
  border-color: rgba(47, 91, 186, 0.12);
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-weight: 600;
}

.page-hero,
.section,
.site-footer-inner {
  width: min(calc(100% - 2rem), var(--max-width));
  margin: 0 auto;
}

.page-hero {
  padding: 5rem 0 2.5rem;
}

.hero-card {
  position: relative;
  overflow: hidden;
  padding: clamp(2rem, 4vw, 4rem);
  border: 1px solid rgba(214, 221, 232, 0.8);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at top right, rgba(79, 125, 240, 0.18), transparent 28%),
    radial-gradient(circle at 10% 20%, rgba(47, 91, 186, 0.12), transparent 25%),
    rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-lg);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  color: var(--accent-deep);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 2.5rem;
  height: 1px;
  background: currentColor;
  opacity: 0.35;
}

.hero-grid,
.two-column,
.summary-grid,
.cards,
.contact-grid,
.stats {
  display: grid;
  gap: 1.5rem;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.9fr);
  align-items: end;
}

.hero-copy h1,
.page-title {
  margin: 0;
  font-size: clamp(2.6rem, 6vw, 4.8rem);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.hero-copy p,
.page-intro,
.section-intro {
  max-width: 42rem;
  color: var(--text-muted);
  font-size: 1.08rem;
}

.hero-copy p + p,
.page-intro + p {
  margin-top: 1rem;
}

.hero-actions,
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.hero-actions {
  margin-top: 2rem;
}

.button,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.button {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  background: var(--accent-deep);
}

.button-secondary {
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.72);
  color: var(--text);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: var(--accent);
  color: var(--accent-deep);
}

.hero-panel,
.card,
.feature-card,
.profile-card,
.timeline-item,
.stat-card,
.quote-card,
.contact-card,
.notice-card,
.table-wrap,
.highlight-panel {
  border: 1px solid rgba(214, 221, 232, 0.9);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow-sm);
}

.hero-panel {
  padding: 1.5rem;
}

.hero-panel h2,
.card h3,
.feature-card h3,
.profile-card h3,
.timeline-item h3,
.quote-card h3,
.contact-card h3,
.notice-card h3 {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
  line-height: 1.4;
}

.hero-panel p,
.card p,
.feature-card p,
.profile-card p,
.timeline-item p,
.quote-card p,
.contact-card p,
.notice-card p {
  color: var(--text-muted);
}

.section {
  padding: 2rem 0 4.5rem;
}

.section-header {
  margin-bottom: 2rem;
}

.section-header h2 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.section-intro {
  margin-top: 0.85rem;
}

.cards {
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

.card,
.feature-card,
.profile-card,
.timeline-item,
.contact-card,
.notice-card,
.quote-card,
.highlight-panel {
  padding: 1.6rem;
}

.card {
  grid-column: span 6;
}

.card.wide {
  grid-column: span 12;
}

.card .tag,
.service-tag,
.status-tag {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0 0.75rem;
  border-radius: 999px;
  background: var(--surface-muted);
  color: var(--accent-deep);
  font-size: 0.85rem;
  font-weight: 600;
}

.card .service-title {
  margin: 1rem 0 0.75rem;
  font-size: 1.3rem;
}

.card .meta,
.meta-list {
  margin-top: 1rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.feature-grid,
.service-grid,
.works-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1.5rem;
}

.feature-card {
  grid-column: span 4;
}

.service-panel {
  grid-column: span 12;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.72fr);
  gap: 1.5rem;
  padding: 1.8rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(214, 221, 232, 0.9);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-sm);
}

.service-panel h2,
.work-panel h2,
.page-section h2 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  line-height: 1.2;
}

.service-panel p,
.service-panel li,
.work-panel p,
.work-panel li,
.table-wrap,
.page-section p,
.page-section li {
  color: var(--text-muted);
}

.service-side,
.work-side {
  display: grid;
  gap: 1rem;
}

.mini-panel {
  padding: 1.2rem;
  border-radius: var(--radius-sm);
  background: var(--surface-muted);
}

.mini-panel strong {
  display: block;
  margin-bottom: 0.45rem;
  color: var(--text);
}

.summary-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.stat-card {
  padding: 1.6rem;
}

.stat-card strong {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 2rem;
  line-height: 1;
  letter-spacing: -0.04em;
}

.two-column {
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  align-items: start;
}

.timeline {
  display: grid;
  gap: 1rem;
}

.timeline-item {
  position: relative;
}

.timeline-item span {
  display: inline-block;
  margin-bottom: 0.6rem;
  color: var(--accent-deep);
  font-size: 0.9rem;
  font-weight: 700;
}

.quote-card blockquote {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.85;
}

.quote-card footer {
  margin-top: 1rem;
  color: var(--text-muted);
}

.table-wrap {
  overflow: hidden;
  padding: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  width: 11rem;
  color: var(--text);
  background: rgba(243, 245, 249, 0.8);
  font-weight: 700;
}

tr:last-child th,
tr:last-child td {
  border-bottom: none;
}

.notice-card {
  border-color: rgba(15, 118, 110, 0.18);
  background: rgba(240, 253, 250, 0.9);
}

.status-tag {
  background: rgba(15, 118, 110, 0.1);
  color: var(--success);
}

.contact-grid {
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.8fr);
  align-items: start;
}

.contact-list {
  list-style: none;
  padding: 0;
}

.contact-list li + li {
  margin-top: 1rem;
}

.contact-list strong {
  display: block;
  color: var(--text);
}

.contact-list a {
  color: var(--accent-deep);
  word-break: break-all;
}

.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 0;
  list-style: none;
}

.pill-list li {
  margin: 0;
  padding: 0.7rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.66);
  color: var(--text-muted);
}

.highlight-panel {
  display: grid;
  gap: 1rem;
}

.site-footer {
  margin-top: 2rem;
  border-top: 1px solid rgba(214, 221, 232, 0.9);
  background: rgba(255, 255, 255, 0.72);
}

.site-footer-inner {
  padding: 2rem 0 3rem;
  display: grid;
  gap: 1.5rem;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.5rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--text-muted);
}

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

.footer-meta {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 920px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    inset: calc(100% + 0.4rem) 1rem auto;
    padding: 0.9rem;
    border: 1px solid rgba(214, 221, 232, 0.9);
    border-radius: 1.25rem;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

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

  .nav-links a,
  .nav-cta {
    width: 100%;
  }

  .hero-grid,
  .two-column,
  .summary-grid,
  .contact-grid,
  .service-panel,
  .feature-grid,
  .works-grid {
    grid-template-columns: 1fr;
  }

  .card,
  .feature-card {
    grid-column: span 12;
  }
}

@media (max-width: 640px) {
  .page-hero {
    padding-top: 4rem;
  }

  .hero-card,
  .card,
  .feature-card,
  .profile-card,
  .timeline-item,
  .contact-card,
  .notice-card,
  .quote-card,
  .highlight-panel,
  .service-panel {
    padding: 1.25rem;
  }

  th,
  td {
    display: block;
    width: 100%;
    padding: 0.85rem 1rem;
  }

  th {
    border-bottom: none;
  }

  td {
    padding-top: 0;
  }
}