:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-soft: #eef5f8;
  --text: #17212b;
  --muted: #5d6b78;
  --line: #dbe4ea;
  --primary: #0b7285;
  --primary-dark: #075866;
  --accent: #f5a524;
  --shadow: 0 18px 45px rgba(16, 38, 52, 0.12);
  --radius: 8px;
  --content: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", "Yu Gothic", "Meiryo", sans-serif;
  color: var(--text);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.8;
  overflow-x: hidden;
}

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

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(245, 165, 36, 0.72);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.header-inner {
  width: min(100% - 40px, var(--content));
  min-height: 78px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0;
}

.brand img {
  width: 154px;
  height: auto;
}

.brand-text {
  display: none;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-list a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 14px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 700;
}

.nav-list a:hover,
.nav-list a[aria-current="page"] {
  color: var(--primary-dark);
  background: var(--surface-soft);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  font-size: 1.4rem;
  line-height: 1;
}

.hero {
  background: linear-gradient(120deg, rgba(7, 88, 102, 0.9), rgba(13, 38, 55, 0.78)), url("../images/slide01.webp") center / cover;
  color: #fff;
}

.hero-inner {
  width: min(100% - 40px, var(--content));
  min-height: 620px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  align-items: center;
  gap: 48px;
  padding: 72px 0 86px;
}

.hero-copy {
  min-width: 0;
  max-width: 710px;
}

.eyebrow {
  margin: 0 0 18px;
  color: #bfe8ef;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1,
.page-hero h1 {
  margin: 0;
  font-size: 4.6rem;
  line-height: 1.12;
  letter-spacing: 0;
}

.lead {
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.18rem;
}

.hero-panel {
  align-self: end;
  background: rgba(255, 255, 255, 0.94);
  color: var(--text);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-panel img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.hero-panel-body {
  padding: 24px;
}

.hero-panel-body h2 {
  margin: 0 0 10px;
  font-size: 1.15rem;
}

.hero-panel-body p {
  margin: 0;
  color: var(--muted);
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-weight: 700;
  line-height: 1.45;
}

.button.primary {
  background: var(--accent);
  color: #17212b;
}

.button.secondary {
  border-color: rgba(255, 255, 255, 0.55);
  color: #fff;
}

.button.dark {
  background: var(--primary);
  color: #fff;
}

.section {
  padding: 88px 0;
}

.section.alt {
  background: var(--surface);
}

.container {
  width: min(100% - 40px, var(--content));
  margin: 0 auto;
}

.section-header {
  max-width: 760px;
  margin-bottom: 40px;
}

.section-header.center {
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.section-title {
  margin: 0;
  font-size: 2.45rem;
  line-height: 1.28;
}

.section-text {
  margin: 16px 0 0;
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 22px;
}

.grid > * {
  min-width: 0;
}

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

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

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(16, 38, 52, 0.06);
}

.card-body {
  padding: 26px;
}

.card h3 {
  margin: 0 0 10px;
  font-size: 1.2rem;
  line-height: 1.45;
}

.card p {
  margin: 0;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.feature-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.85fr);
  gap: 48px;
  align-items: center;
}

.split > * {
  min-width: 0;
}

.split img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-hero {
  background: linear-gradient(120deg, #0b4654, #17364a);
  color: #fff;
  padding: 82px 0 74px;
}

.page-hero .container {
  max-width: 920px;
}

.page-hero p {
  max-width: 760px;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: 1.08rem;
  overflow-wrap: anywhere;
}

.member {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  padding: 24px;
}

.member img {
  width: 96px;
  height: 96px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  object-fit: cover;
  align-self: center;
}

.member .card-body {
  padding: 0;
}

.member h3 {
  margin: 0;
}

.member .handle {
  margin: 2px 0 10px;
  color: var(--primary);
  font-weight: 700;
  overflow-wrap: anywhere;
}

.info-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.info-table th,
.info-table td {
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  overflow-wrap: anywhere;
}

.info-table th {
  width: 190px;
  background: var(--surface-soft);
}

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

.notice {
  padding: 26px;
  border-left: 5px solid var(--accent);
  background: #fff8ea;
  border-radius: var(--radius);
}

.profile-card {
  align-self: start;
  display: grid;
  justify-items: center;
  gap: 18px;
  padding: 34px 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
}

.profile-card img {
  width: 148px;
  height: 148px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 0 8px var(--surface-soft);
}

.profile-card h2 {
  margin: 4px 0 2px;
  font-size: 1.45rem;
}

.profile-card p {
  margin: 0;
  color: var(--muted);
}

.profile-role {
  color: var(--primary) !important;
  font-weight: 700;
}

.process-list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.process-list li {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 20px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.process-list span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
}

.process-list h3 {
  margin: 0 0 6px;
}

.process-list p {
  margin: 0;
  color: var(--muted);
}

.site-footer {
  background: #122431;
  color: rgba(255, 255, 255, 0.78);
}

.footer-inner {
  width: min(100% - 40px, var(--content));
  margin: 0 auto;
  padding: 34px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-inner p {
  margin: 0;
}

.footer-links {
  display: flex;
  gap: 18px;
}

.footer-links a {
  color: #fff;
  font-weight: 700;
}

@media (max-width: 900px) {
  .header-inner {
    min-height: 70px;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .site-nav {
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    display: none;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
  }

  .site-nav.is-open {
    display: block;
  }

  .nav-list {
    width: min(100% - 40px, var(--content));
    margin: 0 auto;
    padding: 14px 0 20px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .nav-list a {
    justify-content: center;
  }

  .hero-inner,
  .split {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    min-height: auto;
    gap: 34px;
    padding-top: 58px;
    padding-bottom: 64px;
  }

  .hero h1,
  .page-hero h1 {
    font-size: 3.2rem;
  }

  .section-title {
    font-size: 2.1rem;
  }

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

  .page-hero {
    padding: 68px 0 60px;
  }
}

@media (max-width: 620px) {
  body {
    font-size: 15px;
  }

  .header-inner,
  .container,
  .footer-inner,
  .hero-inner {
    width: min(100% - 28px, var(--content));
  }

  .brand img {
    width: 132px;
  }

  .nav-list {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 64px 0;
  }

  .section-header {
    margin-bottom: 28px;
  }

  .hero h1,
  .page-hero h1 {
    font-size: 2.35rem;
  }

  .lead {
    font-size: 1rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .button-row {
    display: grid;
    gap: 10px;
  }

  .button {
    width: 100%;
    min-height: 46px;
    padding: 10px 16px;
  }

  .card-body {
    padding: 22px;
  }

  .member {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 14px;
    padding: 18px;
  }

  .member img {
    width: 72px;
    height: 72px;
  }

  .info-table th,
  .info-table td {
    display: block;
    width: 100%;
  }

  .process-list li {
    grid-template-columns: 1fr;
  }

  .info-table th {
    border-bottom: none;
    padding-bottom: 8px;
  }

  .info-table td {
    padding-top: 0;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .profile-card {
    padding: 28px 22px;
  }

  .profile-card img {
    width: 128px;
    height: 128px;
  }
}

@media (max-width: 420px) {
  .header-inner,
  .container,
  .footer-inner,
  .hero-inner {
    width: min(100% - 24px, var(--content));
  }

  .brand img {
    width: 118px;
  }

  .hero h1,
  .page-hero h1 {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.55rem;
  }

  .page-hero {
    padding: 54px 0 48px;
  }

  .hero-inner {
    padding: 48px 0 56px;
  }

  .member {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .member img {
    margin: 0 auto;
  }

  .process-list li {
    padding: 20px;
  }
}