:root {
  color-scheme: light;
  --ink: #17212b;
  --muted: #5b6775;
  --quiet: #edf3f5;
  --paper: #ffffff;
  --line: #d8e2e8;
  --blue: #124b7a;
  --blue-2: #0b314f;
  --teal: #0f8b8d;
  --green: #2d7c4f;
  --amber: #c87c1e;
  --red: #b93232;
  --shadow: 0 18px 55px rgba(16, 42, 67, 0.16);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #f7fafb;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans",
    "Yu Gothic", "Meiryo", Arial, sans-serif;
  line-height: 1.65;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

.lang-en {
  display: none;
}

html[data-lang="en"] .lang-ja {
  display: none;
}

html[data-lang="en"] .lang-en {
  display: inline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(216, 226, 232, 0.8);
  backdrop-filter: blur(16px);
}

.header-shell {
  max-width: 1180px;
  margin: 0 auto;
}

.utility-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 38px;
  padding: 6px 24px;
  border-bottom: 1px solid rgba(216, 226, 232, 0.75);
}

.utility-note,
.utility-actions,
.utility-link {
  display: flex;
  align-items: center;
}

.utility-note {
  gap: 8px;
  min-width: 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.utility-note i,
.utility-link i {
  color: var(--teal);
}

.utility-actions {
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.utility-link {
  gap: 7px;
  min-height: 32px;
  padding: 5px 9px;
  color: #2c4051;
  background: #f4f8fa;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.main-row {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 76px;
  padding: 10px 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 1 1 390px;
  min-width: 310px;
  max-width: 470px;
}

.brand > span:last-child {
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  color: #fff;
  background: var(--blue);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-name {
  display: block;
  color: var(--blue-2);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 0;
}

.brand-sub {
  display: block;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--blue-2);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  flex: 0 1 auto;
  min-width: 0;
}

.nav-item {
  position: relative;
}

.nav-link,
.nav-menu-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 40px;
  padding: 9px 11px;
  color: #263846;
  background: transparent;
  border: 0;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  cursor: pointer;
}

.nav-link:hover,
.nav-link.active,
.nav-item.active > .nav-menu-button,
.nav-menu-button:hover,
.nav-item.open > .nav-menu-button {
  color: var(--blue);
  background: #eaf3f7;
}

.nav-menu {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  z-index: 25;
  display: grid;
  gap: 4px;
  min-width: 250px;
  padding: 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 46px rgba(16, 42, 67, 0.16);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.nav-menu-link {
  display: block;
  padding: 10px 12px;
  color: #304150;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 750;
  line-height: 1.35;
}

.nav-menu-link:hover,
.nav-menu-link.active {
  color: var(--blue);
  background: #eef6f9;
}

.nav-item.open > .nav-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

@media (hover: hover) and (pointer: fine) {
  .nav-item.has-menu::after {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: 14px;
    content: "";
  }

  .nav-item:hover > .nav-menu-button,
  .nav-item:focus-within > .nav-menu-button {
    color: var(--blue);
    background: #eaf3f7;
  }

  .nav-item:hover > .nav-menu {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav-item:focus-within > .nav-menu {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }
}

.main-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.language-switch {
  display: inline-flex;
  padding: 3px;
  background: #e9f0f3;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.language-switch button {
  min-width: 42px;
  height: 34px;
  padding: 0 10px;
  color: #40515f;
  background: transparent;
  border: 0;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 800;
}

.language-switch button.active {
  color: #fff;
  background: var(--blue);
}

.phone-link,
.quote-link,
.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 10px 15px;
  border-radius: 8px;
  font-weight: 800;
}

.phone-link {
  color: var(--blue);
  background: #eef6f9;
}

.quote-link,
.primary-button {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 12px 24px rgba(18, 75, 122, 0.18);
}

.secondary-button {
  color: var(--blue);
  background: #fff;
  border: 1px solid var(--line);
}

.hero {
  position: relative;
  display: grid;
  align-items: end;
  overflow: hidden;
  background-color: #112638;
  background-image: url("../images/bg2.jpg");
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
}

.hero-home {
  min-height: 610px;
}

.hero-page {
  min-height: 430px;
}

.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(90deg, rgba(8, 28, 44, 0.86), rgba(8, 28, 44, 0.52) 50%, rgba(8, 28, 44, 0.2)),
    linear-gradient(0deg, rgba(8, 28, 44, 0.86), transparent 45%);
}

.hero-page::before {
  background:
    linear-gradient(90deg, rgba(8, 28, 44, 0.8), rgba(8, 28, 44, 0.44) 52%, rgba(8, 28, 44, 0.14)),
    linear-gradient(0deg, rgba(8, 28, 44, 0.78), transparent 48%);
}

.hero-inner {
  position: relative;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 120px 0 72px;
}

.hero-page .hero-inner {
  padding: 70px 0 46px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  gap: 34px;
  align-items: end;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 32px;
  padding: 5px 11px;
  color: #dff5f2;
  background: rgba(15, 139, 141, 0.26);
  border: 1px solid rgba(223, 245, 242, 0.25);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
}

.hero h1 {
  max-width: 820px;
  margin: 22px 0 18px;
  color: #fff;
  font-size: clamp(40px, 5vw, 72px);
  line-height: 1.05;
  letter-spacing: 0;
}

.hero-page h1 {
  max-width: 760px;
  margin: 16px 0 14px;
  font-size: clamp(32px, 4vw, 54px);
}

.hero p {
  max-width: 760px;
  margin: 0 0 28px;
  color: #e8f0f3;
  font-size: 18px;
}

.hero-page p {
  max-width: 700px;
  margin-bottom: 20px;
  font-size: 16px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-panel {
  padding: 22px;
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 8px;
  backdrop-filter: blur(14px);
}

.hero-page .hero-panel {
  padding: 18px;
}

.hero-panel strong {
  display: block;
  font-size: 34px;
  line-height: 1.1;
}

.hero-page .hero-panel strong {
  font-size: 28px;
}

.hero-panel span {
  color: #d7e8ef;
  font-size: 13px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.band {
  background: var(--paper);
}

.band-alt {
  background: #eef4f6;
}

.section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 78px 24px;
}

.section.compact {
  padding-top: 48px;
  padding-bottom: 48px;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(280px, 1fr);
  gap: 34px;
  align-items: end;
  margin-bottom: 34px;
}

.section-heading h2 {
  margin: 0;
  color: var(--blue-2);
  font-size: clamp(29px, 3vw, 44px);
  line-height: 1.18;
  letter-spacing: 0;
}

.section-heading p {
  margin: 0;
  color: var(--muted);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

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

.info-card,
.case-card,
.form-panel,
.contact-panel,
.timeline-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(16, 42, 67, 0.06);
}

.info-card,
.case-card {
  padding: 24px;
}

.info-card .number,
.case-card .number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 18px;
  color: #fff;
  background: var(--teal);
  border-radius: 8px;
  font-weight: 900;
}

.info-card h3,
.case-card h3 {
  margin: 0 0 10px;
  color: var(--blue-2);
  font-size: 20px;
  line-height: 1.35;
}

.info-card p,
.case-card p {
  margin: 0;
  color: var(--muted);
}

.feature-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 14px 16px;
  background: #f6fafb;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: #304150;
}

.feature-list i {
  flex: 0 0 auto;
  margin-top: 4px;
  color: var(--green);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 36px;
  align-items: center;
}

.split img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.content-block h2,
.content-block h3 {
  color: var(--blue-2);
  line-height: 1.25;
}

.content-block h2 {
  margin: 0 0 18px;
  font-size: clamp(30px, 3vw, 44px);
}

.content-block h3 {
  margin: 28px 0 10px;
  font-size: 23px;
}

.content-block p {
  margin: 0 0 14px;
  color: var(--muted);
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.metric {
  min-height: 136px;
  padding: 24px;
  background: #fff;
}

.metric strong {
  display: block;
  color: var(--blue);
  font-size: 34px;
  line-height: 1.1;
}

.metric span {
  color: var(--muted);
  font-size: 14px;
}

.timeline {
  display: grid;
  gap: 14px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 18px;
  padding: 22px;
}

.timeline-item time {
  color: var(--blue);
  font-weight: 900;
}

.timeline-item h3 {
  margin: 0 0 6px;
  color: var(--blue-2);
}

.timeline-item p {
  margin: 0;
  color: var(--muted);
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 28px;
  align-items: start;
}

.sidebar {
  position: sticky;
  top: 98px;
  display: grid;
  gap: 14px;
}

.sidebar-box {
  padding: 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.sidebar-box h3 {
  margin: 0 0 12px;
  color: var(--blue-2);
  font-size: 18px;
}

.sidebar-box p,
.sidebar-box li {
  color: var(--muted);
  font-size: 14px;
}

.sidebar-box ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 18px;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 24px;
  color: var(--muted);
  font-size: 13px;
}

.breadcrumbs a {
  color: var(--blue);
  font-weight: 700;
}

.directory {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.directory a {
  display: block;
  min-height: 86px;
  padding: 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.directory a:hover {
  border-color: #95b9cc;
  box-shadow: 0 8px 22px rgba(16, 42, 67, 0.08);
}

.directory strong {
  display: block;
  color: var(--blue-2);
  line-height: 1.35;
}

.directory span {
  color: var(--muted);
  font-size: 13px;
}

.form-panel,
.contact-panel {
  padding: 26px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.field {
  display: grid;
  gap: 7px;
}

.field.full {
  grid-column: 1 / -1;
}

.field label {
  color: #2d3e4d;
  font-size: 13px;
  font-weight: 800;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  color: var(--ink);
  background: #f7fbfc;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.field textarea {
  min-height: 118px;
  resize: vertical;
}

.form-note {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.site-footer {
  color: #d8e6ec;
  background: #102637;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.25fr 1fr 1fr 1fr;
  gap: 28px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 54px 24px 42px;
}

.site-footer h2,
.site-footer h3 {
  margin: 0 0 14px;
  color: #fff;
}

.site-footer p,
.site-footer li {
  color: #b6c8d1;
  font-size: 14px;
}

.site-footer ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 24px;
  color: #a9bbc4;
  font-size: 13px;
}

.floating-cta {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 18;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.floating-cta a {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--blue);
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(16, 42, 67, 0.2);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 30;
  transform: translateX(-50%) translateY(24px);
  opacity: 0;
  max-width: min(520px, calc(100% - 40px));
  padding: 14px 18px;
  color: #fff;
  background: var(--blue-2);
  border-radius: 8px;
  box-shadow: var(--shadow);
  transition: 0.25s ease;
  pointer-events: none;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

@media (max-width: 1040px) {
  .utility-row {
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 8px;
    padding: 8px 16px;
  }

  .utility-note {
    flex: 1 1 260px;
    line-height: 1.4;
  }

  .utility-actions {
    flex: 1 1 360px;
    justify-content: flex-end;
  }

  .main-row {
    flex-wrap: wrap;
    gap: 10px;
    min-height: 0;
    padding: 10px 16px;
  }

  .brand {
    order: 1;
    flex: 1 1 360px;
    min-width: 0;
    max-width: none;
    gap: 10px;
  }

  .brand-mark {
    flex: 0 0 44px;
    width: 44px;
    height: 44px;
  }

  .brand-name,
  .brand-sub {
    overflow: visible;
    text-overflow: clip;
    white-space: normal;
  }

  .nav-toggle {
    display: block;
    flex: 0 0 44px;
  }

  .site-nav {
    order: 3;
    display: none;
    flex: 0 0 100%;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 8px;
    margin-top: 4px;
    padding: 12px 0 0;
    border-top: 1px solid var(--line);
  }

  .site-nav.open {
    display: flex;
  }

  .nav-item {
    width: 100%;
  }

  .nav-link,
  .nav-menu-button {
    width: 100%;
    justify-content: space-between;
    min-height: 44px;
    text-align: left;
    white-space: normal;
  }

  .nav-menu {
    position: static;
    display: none;
    min-width: 0;
    margin: 2px 0 4px;
    padding: 6px;
    background: #f6fafb;
    box-shadow: none;
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }

  .nav-item.open > .nav-menu {
    display: grid;
  }

  .main-actions {
    order: 2;
    flex: 0 0 auto;
    flex-wrap: wrap;
    justify-content: flex-end;
    margin-left: 0;
  }

  .phone-link {
    display: none;
  }

  .hero-grid,
  .section-heading,
  .split,
  .page-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

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

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

@media (max-width: 760px) {
  .utility-note {
    flex-basis: 100%;
  }

  .utility-actions {
    flex-basis: 100%;
    flex-wrap: nowrap;
    justify-content: space-between;
    align-items: center;
  }

  .utility-mail {
    display: none;
  }

  .utility-link {
    min-height: 30px;
    padding: 5px 8px;
    font-size: 12px;
  }

  .language-switch button {
    min-width: 38px;
    height: 32px;
  }

  .brand {
    flex: 1 1 0;
    align-items: flex-start;
  }

  .brand-mark {
    flex-basis: 42px;
    width: 42px;
    height: 42px;
  }

  .brand-name {
    font-size: 15px;
    overflow-wrap: anywhere;
  }

  .brand-sub {
    font-size: 12px;
    line-height: 1.35;
  }

  .main-actions {
    width: auto;
    justify-content: flex-end;
  }

  .quote-link {
    display: none;
  }

  .nav-toggle {
    width: 42px;
    height: 42px;
    flex-basis: 42px;
  }

  .hero-home {
    min-height: 680px;
  }

  .hero-page {
    min-height: 360px;
  }

  .hero-inner {
    width: min(100% - 32px, 1180px);
    padding: 86px 0 42px;
  }

  .hero-page .hero-inner {
    padding: 52px 0 32px;
  }

  .hero h1 {
    font-size: 40px;
  }

  .hero-page h1 {
    font-size: 32px;
  }

  .hero p {
    font-size: 16px;
  }

  .hero-page p {
    font-size: 15px;
  }

  .hero-stats,
  .card-grid,
  .card-grid.two,
  .metric-strip,
  .directory,
  .form-grid,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 54px 16px;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }

  .footer-bottom-inner {
    flex-direction: column;
  }

  .floating-cta {
    display: none;
  }
}

@media (max-width: 520px) {
  .utility-link {
    white-space: normal;
    line-height: 1.25;
  }

  .utility-actions {
    gap: 8px;
  }

  .utility-phone {
    flex: 1 1 auto;
  }

  .main-row {
    align-items: flex-start;
    padding: 10px 14px;
  }

  .brand {
    gap: 9px;
  }

  .brand-mark {
    flex-basis: 40px;
    width: 40px;
    height: 40px;
  }

  .brand-name {
    font-size: 14px;
  }

  .brand-sub {
    font-size: 11px;
  }

  .hero-page {
    min-height: 330px;
  }

  .hero-page .hero-inner {
    padding: 44px 0 28px;
  }

  .nav-link,
  .nav-menu-button,
  .nav-menu-link {
    font-size: 13px;
  }
}