:root {
  --ink: #172b3a;
  --blue: #0d5875;
  --line: #cfdee2;
  --paper: #fbfcfa;
  --maxw: 1120px;
  --edge: 20px;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP",
    "Yu Gothic Medium", YuGothic, "Yu Gothic", Meiryo, sans-serif;
}
* { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-sans);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; height: auto; }

.site-header, .hero, .services, .philosophy, .profile, footer {
  padding-left: max(var(--edge), calc((100% - var(--maxw)) / 2));
  padding-right: max(var(--edge), calc((100% - var(--maxw)) / 2));
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 12px 20px;
  background: var(--blue);
  color: #fff;
  font-weight: 700;
}
.skip-link:focus { left: 0; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 60px;
  background: rgba(251, 252, 250, .88);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  text-decoration: none;
}
.brand-mark { width: 30px; height: 30px; flex: none; border-radius: 7px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-ja { font-weight: 800; font-size: .98rem; letter-spacing: .06em; }
.brand-latin {
  color: var(--blue);
  font-size: .58rem;
  font-weight: 700;
  letter-spacing: .22em;
}
.site-nav { display: none; gap: 22px; }
.site-nav a {
  color: inherit;
  text-decoration: none;
  font-size: .85rem;
  font-weight: 700;
}
.site-nav a:hover { color: var(--blue); }

main :target,
.service-card[id] { scroll-margin-top: 76px; }

.hero {
  padding-top: 64px;
  padding-bottom: 56px;
  background: linear-gradient(135deg, #e2f3f7, #fbfcfa 66%);
}
.eyebrow {
  margin: 0 0 16px;
  color: var(--blue);
  font-weight: 700;
  letter-spacing: .16em;
  font-size: .75rem;
}
.hero .eyebrow {
  margin-bottom: 14px;
  font-size: clamp(.9rem, 2.2vw, 1rem);
  letter-spacing: .08em;
}
h1, h2, h3 { letter-spacing: .03em; line-height: 1.32; }
h1 {
  margin: 0;
  font-size: clamp(1.75rem, 6.4vw, 4.25rem);
}
h1 em { color: var(--blue); font-style: normal; }
.lead {
  max-width: 40em;
  margin: 24px 0 32px;
  font-size: clamp(.98rem, 2.4vw, 1.15rem);
}
.quick-links {
  display: grid;
  max-width: 620px;
  border-top: 1px solid var(--line);
}
.quick-links a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  min-height: 48px;
  padding: 14px 4px;
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  font-weight: 700;
  font-size: clamp(.92rem, 2.2vw, 1rem);
}
.quick-links a:hover { color: var(--blue); }
.quick-links span { flex: none; color: var(--blue); font-size: 1.3rem; }

.services { padding-top: 72px; padding-bottom: 72px; }
.section-intro { max-width: 34em; margin-bottom: 40px; }
h2 { margin: 0 0 16px; font-size: clamp(1.6rem, 4.6vw, 3.2rem); }
.section-intro p:last-child { margin-bottom: 0; }

.service-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}
.service-card {
  display: flex;
  flex-direction: column;
  padding: 26px;
  background: var(--paper);
}
.number { margin: 0 0 28px; color: var(--blue); font-size: .85rem; font-weight: 700; }
h3 { margin: 0 0 10px; font-size: clamp(1.25rem, 3.2vw, 1.55rem); }
.brand-en {
  margin: 0 0 16px;
  color: var(--blue);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .12em;
}
.service-card > p.body { margin: 0 0 26px; font-size: .93rem; }
.button {
  display: inline-flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  margin-top: auto;
  min-height: 44px;
  color: var(--blue);
  text-decoration: none;
  font-weight: 700;
  font-size: .95rem;
}
.button:hover { text-decoration: underline; }
.button span { flex: none; font-size: 1.25rem; }

.philosophy {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding-top: 72px;
  padding-bottom: 72px;
  color: #fff;
  background: var(--ink);
}
.philosophy .eyebrow { color: #9fd8e8; margin-bottom: 0; }
.philosophy h2 { margin: 0; }
.philosophy-copy p { margin-top: 0; }
.philosophy-copy p:last-child { margin-bottom: 0; }

.profile { padding-top: 72px; padding-bottom: 72px; }
.profile-list {
  display: grid;
  gap: 1px;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--line);
}
.profile-list > div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 18px 22px;
  background: var(--paper);
}
.profile-list dt {
  color: var(--blue);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .06em;
}
.profile-list dd { margin: 0; font-size: .93rem; }
.profile-list a { color: inherit; }
.profile-note {
  max-width: 44em;
  margin: 24px 0 0;
  color: #5a6b74;
  font-size: .85rem;
}

footer {
  padding-top: 48px;
  padding-bottom: 36px;
  background: #0b1d28;
  color: #e6edf0;
  font-size: .88rem;
}
.footer-inner { display: grid; gap: 32px; }
.footer-about { max-width: 34em; }
.footer-name { margin: 0 0 8px; font-weight: 800; letter-spacing: .13em; }
footer p { margin: 0 0 6px; }
.footer-heading {
  margin: 0 0 12px;
  color: #9fd8e8;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .16em;
}
.footer-links { display: flex; flex-direction: column; align-items: flex-start; }
.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 0;
  color: #e6edf0;
  text-decoration: none;
}
.footer-links a:hover { color: #9fd8e8; text-decoration: underline; }
.copyright {
  margin: 36px 0 0;
  padding-top: 20px;
  border-top: 1px solid rgba(230, 237, 240, .16);
  color: #a3bac4;
  font-size: .8rem;
}

/* Tablet */
@media (min-width: 600px) {
  :root { --edge: 32px; }
  .site-header { min-height: 68px; }
  .site-nav { display: flex; }
  .brand-mark { width: 34px; height: 34px; }
  .brand-ja { font-size: 1.05rem; }
  main :target, .service-card[id] { scroll-margin-top: 84px; }
  .footer-inner { grid-template-columns: 1.4fr 1fr; gap: 48px; }
  .hero { padding-top: 88px; padding-bottom: 72px; }
  .lead { margin: 28px 0 36px; }
  .services { padding-top: 88px; padding-bottom: 88px; }
  .section-intro { margin-bottom: 48px; }
  .service-card { padding: 28px; }
  .philosophy { padding-top: 88px; padding-bottom: 88px; gap: 32px; }
  .profile { padding-top: 88px; padding-bottom: 88px; }
  .profile-list > div { grid-template-columns: 12em 1fr; gap: 24px; padding: 20px 26px; }
}

/* Desktop */
@media (min-width: 1000px) {
  :root { --edge: 40px; }
  .site-header { min-height: 76px; }
  .site-nav { gap: 32px; }
  main :target, .service-card[id] { scroll-margin-top: 92px; }
  .hero { min-height: 560px; padding-top: 96px; padding-bottom: 76px; }
  .service-grid { grid-template-columns: repeat(3, 1fr); }
  .service-card { min-height: 400px; }
  .services { padding-top: 105px; padding-bottom: 105px; }
  .philosophy {
    grid-template-columns: 1.1fr 1fr;
    gap: 72px;
    padding-top: 100px;
    padding-bottom: 105px;
  }
  .philosophy .eyebrow { grid-column: 1 / -1; margin-bottom: -46px; }
  .profile { padding-top: 100px; padding-bottom: 105px; }
  .profile-list > div { grid-template-columns: 14em 1fr; }
}

/* Wide desktop */
@media (min-width: 1600px) {
  :root { --maxw: 1280px; --edge: 56px; }
  .hero { min-height: 680px; padding-top: 128px; padding-bottom: 96px; }
  .lead { font-size: 1.2rem; }
  .service-card { padding: 36px; }
}

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