:root {
  --color-primary: #004289;
  --color-primary-dark: rgba(0, 41, 91, 0.82);
  --color-text: #333333;
  --color-muted: #667085;
  --color-bg-light: #f8f9fa;
  --color-border: #eaeaea;
  --color-white: #ffffff;
  --container-width: 1080px;
  --container-narrow: 800px;
  --section-padding: 90px;
  --transition-base: 0.3s ease;
  --shadow-soft: 0 12px 32px rgba(0, 41, 91, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.9;
  letter-spacing: 0.02em;
}

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

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

ul {
  margin: 0;
  padding: 0;
}

p,
h1,
h2,
h3 {
  margin-top: 0;
}

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

.narrow-center {
  max-width: 900px;
}

.section {
  padding: var(--section-padding) 0;
}

.section-white {
  background: var(--color-white);
}

.section-blue {
  background: var(--color-primary);
}

.section-gray {
  background: var(--color-bg-light);
}

.section-heading {
  margin-bottom: 56px;
  text-align: center;
}

.left-aligned-heading {
  text-align: left;
}

.section-heading-en {
  margin-bottom: 8px;
  color: var(--color-primary);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.section-heading-ja {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  width: 100%;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(234, 234, 234, 0.8);
  backdrop-filter: blur(10px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 24px;
}

.site-logo {
  color: var(--color-primary);
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: 0.06em;
}


.site-logo img{
width:140px;
}

.global-nav {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-menu a {
  position: relative;
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition-base);
}

.nav-menu a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-base);
}

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

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

.nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  padding: 0;
  cursor: pointer;
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 28px;
  height: 2px;
  margin: 6px 0;
  background: var(--color-primary);
  transition: var(--transition-base);
}

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

.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 20px 80px;
  background-image: url('../images/FV-bg.jpeg');
  background-size: cover;
  background-position: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 31, 63, 0.38), rgba(0, 31, 63, 0.38));
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--color-white);
}

.hero-company {
  margin-bottom: 18px;
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.hero-content h1 {
  margin: 0;
  font-size: clamp(2.5rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.4;
  text-shadow: 0 6px 20px rgba(0, 0, 0, 0.28);
}

.hero-content h1 img{
width:40vw;
margin:0 auto;
}

.slogan-band {
  padding: 40px 0;
  background: var(--color-primary);
}

.slogan-band img{
width:50%;
margin:0 auto;
}

.slogan-band p {
  margin: 0;
  color: var(--color-white);
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  font-weight: 700;
  text-align: center;
}

.philosophy-block {
  margin: 60px 0;
  text-align: center;
}

.philosophy-block h2,
.value-area h2,
.service-content h2 {
  margin-bottom: 18px;
  color: var(--color-primary);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.philosophy-block h2,
.value-area h2,
.philosophy-block p{
color: var(--color-white);
}

.philosophy-block p,
.value-area > h2 {
  margin-bottom: 0;
}

.philosophy-block p{
font-size: 1.15rem;
font-weight: 700;
}

.value-area {
  margin-top: 72px;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 30px;
  margin-top: 28px;
}

.value-card {
  padding: 30px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.03);
}

.value-card h3 {
  margin-bottom: 14px;
  text-align: left;
  color: var(--color-text);
  font-size: 1.15rem;
  font-weight: 700;
}

.value-card p {
  margin: 0;
  text-align: left;
}

.service-block {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: 48px;
  padding: 80px 0;
}

.service-block.reverse .service-image-wrap {
  order: 2;
}

.service-block.reverse .service-content {
  order: 1;
}

.service-image-wrap {
  margin: 0;
  overflow: hidden;
  border-radius: 6px;
  box-shadow: var(--shadow-soft);
}

.service-image-wrap img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.service-content ul {
  list-style: none;
}

.service-content li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 16px;
}

.service-content li:last-child {
  margin-bottom: 0;
}

.service-content li::before {
  content: '\f00c';
  position: absolute;
  top: 2px;
  left: 0;
  color: var(--color-primary);
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 0.85rem;
}

.message-container {
  max-width: var(--container-narrow);
}

.message-heading {
  margin-bottom: 42px;
}

.message-layout {
  display: flex;
  align-items: flex-start;
  gap: 40px;
}

.message-image-wrap {
  flex: 0 0 40%;
  margin: 0;
  overflow: hidden;
  border-radius: 6px;
  box-shadow: var(--shadow-soft);
}

.message-image-wrap img {
  width: 100%;
  height: 100%;
  min-height: 460px;
  object-fit: cover;
}

.message-content {
  flex: 0 0 60%;
}

.message-content p {
  margin-bottom: 24px;
  text-align: left;
}

.message-sign {
  margin-bottom: 0;
  text-align: right;
}

.company-container,
.news-container {
  max-width: var(--container-narrow);
}

.company-table-wrap {
  max-width: 800px;
  margin: 0 auto;
}

.company-table {
  width: 100%;
  border-collapse: collapse;
  border-top: 1px solid var(--color-border);
}

.company-table th,
.company-table td {
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
  text-align: left;
}

.company-table th {
  width: 30%;
  background: var(--color-bg-light);
  font-weight: 700;
}

.company-table td {
  width: 70%;
  background: var(--color-white);
}

.company-table a {
  color: var(--color-primary);
}

.news-list {
  border-top: 1px solid var(--color-border);
}

.news-item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 15px 0;
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition-base);
}

.news-item time {
  flex: 0 0 120px;
  color: var(--color-primary);
  font-weight: 500;
}

.news-item span {
  flex: 1;
}

.news-item:hover,
.news-item:focus-visible {
  color: var(--color-primary);
}

.contact-section {
  padding: 100px 0;
  background: linear-gradient(180deg, rgba(0, 66, 137, 0.08), rgba(0, 66, 137, 0.14));
}

.contact-inner {
  text-align: center;
}

.contact-heading {
  margin-bottom: 24px;
}

.contact-text {
  max-width: 720px;
  margin: 0 auto;
  font-size: 1.05rem;
}

.contact-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 320px;
  margin-top: 40px;
  padding: 20px 36px;
  border-radius: 40px;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 1rem;
  font-weight: 700;
  box-shadow: 0 18px 35px rgba(0, 66, 137, 0.18);
  transition: transform var(--transition-base), box-shadow var(--transition-base), opacity var(--transition-base);
}

.contact-button:hover,
.contact-button:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 20px 42px rgba(0, 66, 137, 0.24);
  opacity: 0.92;
}

.site-footer {
  padding: 28px 0;
  background: #f2f4f7;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-company,
.footer-copy {
  margin: 0;
  font-size: 0.9rem;
}

@media (max-width: 900px) {
  :root {
    --section-padding: 72px;
  }

  .nav-toggle {
    display: inline-block;
    position: relative;
    z-index: 1001;
  }

  .nav-menu {
    position: absolute;
    top: 78px;
    right: 20px;
    left: 20px;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 16px 0;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
  }

  .nav-menu.is-open {
    display: flex;
  }

  .nav-menu li {
    width: 100%;
  }

  .nav-menu a {
    display: block;
    width: 100%;
    padding: 14px 20px;
  }

  .nav-menu a::after {
    display: none;
  }

  .value-grid,
  .service-block {
    grid-template-columns: 1fr;
  }

  .service-block,
  .service-block.reverse {
    gap: 28px;
    padding: 50px 0;
  }

  .service-block.reverse .service-image-wrap,
  .service-block.reverse .service-content {
    order: initial;
  }

  .message-layout {
    flex-direction: column;
  }

  .message-image-wrap,
  .message-content {
    flex: 1 1 auto;
    width: 100%;
  }

  .message-image-wrap img {
    min-height: 320px;
  }

  .site-logo img {
    width:120px;
  }

  .hero-content h1 img{
    width:70vw;
  }
  .slogan-band img{
    width:80vw;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(calc(100% - 32px), var(--container-width));
  }

  .header-inner {
    min-height: 70px;
  }

  .hero-section {
    padding-top: 100px;
  }

  .hero-company {
    font-size: 1.2rem;
  }

  .hero-content h1 {
    font-size: clamp(2rem, 8vw, 2.5rem);
  }

  .section-heading-en {
    font-size: 1.7rem;
  }

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

  .company-table th {
    padding-bottom: 10px;
  }

  .company-table td {
    padding-top: 10px;
  }

  .news-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .news-item time {
    flex-basis: auto;
  }

  .contact-button {
    width: 100%;
    min-width: 0;
  }
}