/* ========================================
   Corporate Standard – Design System
   ======================================== */

:root {
  --color-primary: #1B4B8A;
  --color-primary-dark: #143a6e;
  --color-accent: #E8A33D;
  --color-accent-hover: #d4922f;
  --color-base: #FFFFFF;
  --color-bg-gray: #F5F7FA;
  --color-text: #222222;
  --color-text-muted: #666666;
  --color-border: #e0e4ea;

  --font-family: "Noto Sans JP", sans-serif;
  --font-weight-normal: 400;
  --font-weight-bold: 700;

  --container-max: 1080px;
  --section-padding: 96px;
  --section-padding-mobile: 64px;

  --header-height: 72px;
  --transition: 0.3s ease;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.1);
  --radius: 8px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

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

.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 10000;
  padding: 12px 20px;
  background: var(--color-primary);
  color: var(--color-base);
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius);
  text-decoration: none;
}

.skip-link:focus {
  top: 16px;
}

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

button:focus:not(:focus-visible),
a:focus:not(:focus-visible) {
  outline: none;
}

body {
  font-family: var(--font-family);
  font-weight: var(--font-weight-normal);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-base);
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-accent);
}

ul {
  list-style: none;
}

/* ---- Utilities ---- */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

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

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

.section__header {
  text-align: center;
  margin-bottom: 48px;
}

.section__label {
  display: inline-block;
  font-size: 13px;
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.section__title {
  font-size: clamp(24px, 4vw, 32px);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  line-height: 1.4;
}

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Buttons ---- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-family);
  font-size: 15px;
  font-weight: var(--font-weight-bold);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform var(--transition);
  text-decoration: none;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-base);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  color: var(--color-base);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-base);
}

.btn--white {
  background: var(--color-base);
  color: var(--color-primary);
}

.btn--white:hover {
  background: var(--color-bg-gray);
  color: var(--color-primary);
}

/* ---- Header ---- */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  transition: background var(--transition), box-shadow var(--transition);
}

.header.is-scrolled {
  background: var(--color-base);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.header__logo {
  font-size: 18px;
  font-weight: var(--font-weight-bold);
  color: var(--color-base);
  transition: color var(--transition);
}

.header.is-scrolled .header__logo {
  color: var(--color-primary);
}

.header__logo span {
  color: var(--color-accent);
}

.header.is-scrolled .header__logo span {
  color: var(--color-accent);
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__link {
  font-size: 14px;
  font-weight: var(--font-weight-bold);
  color: var(--color-base);
  transition: color var(--transition);
}

.header.is-scrolled .nav__link {
  color: var(--color-text);
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--color-accent);
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.hamburger__line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-base);
  transition: background var(--transition), transform var(--transition), opacity var(--transition);
}

.header.is-scrolled .hamburger__line {
  background: var(--color-text);
}

.hamburger.is-open .hamburger__line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger.is-open .hamburger__line:nth-child(2) {
  opacity: 0;
}

.hamburger.is-open .hamburger__line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-base);
  z-index: 999;
  padding: 32px 24px;
  transform: translateX(100%);
  transition: transform var(--transition);
}

.mobile-nav.is-open {
  transform: translateX(0);
}

.mobile-nav__link {
  display: block;
  padding: 16px 0;
  font-size: 16px;
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

/* ---- Hero (Top) ---- */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-base);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: url('../images/hero-factory.png') center/cover no-repeat;
  z-index: 0;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: rgba(27, 75, 138, 0.65);
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  padding: 0 24px;
  max-width: 800px;
  animation: heroFadeIn 1.2s ease forwards;
}

@keyframes heroFadeIn {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero__catch {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: var(--font-weight-bold);
  line-height: 1.4;
  margin-bottom: 20px;
}

.hero__sub {
  font-size: clamp(14px, 2.5vw, 18px);
  line-height: 1.8;
  opacity: 0.9;
}

/* ---- Page Hero (Sub pages) ---- */

.page-hero {
  padding-top: calc(var(--header-height) + 64px);
  padding-bottom: 64px;
  background: var(--color-primary);
  color: var(--color-base);
  text-align: center;
}

.page-hero__label {
  font-size: 13px;
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.1em;
  opacity: 0.8;
  margin-bottom: 8px;
}

.page-hero__title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: var(--font-weight-bold);
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
  font-size: 13px;
  opacity: 0.8;
}

.breadcrumb a {
  color: var(--color-base);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

/* ---- News ---- */

.news-list {
  display: flex;
  flex-direction: column;
}

a.news-item {
  text-decoration: none;
  color: inherit;
}

.news-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}

.news-item:hover {
  background: var(--color-bg-gray);
  padding-left: 12px;
  padding-right: 12px;
  margin-left: -12px;
  margin-right: -12px;
  border-radius: var(--radius);
}

.news-item__date {
  font-size: 14px;
  color: var(--color-text-muted);
  white-space: nowrap;
  min-width: 100px;
}

.news-item__tag {
  display: inline-block;
  padding: 2px 12px;
  font-size: 12px;
  font-weight: var(--font-weight-bold);
  border-radius: 20px;
  white-space: nowrap;
}

.news-item__tag--info {
  background: #e8f0fe;
  color: var(--color-primary);
}

.news-item__tag--press {
  background: #fef3e0;
  color: #b87a1a;
}

.news-item__tag--recruit {
  background: #e6f7ee;
  color: #1a7a4a;
}

.news-item__title {
  font-size: 15px;
  color: var(--color-text);
  flex: 1;
}

.news-item__title:hover {
  color: var(--color-primary);
}

.news-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.news-tabs__btn {
  padding: 8px 20px;
  font-family: var(--font-family);
  font-size: 14px;
  font-weight: var(--font-weight-bold);
  border: 2px solid var(--color-border);
  border-radius: 24px;
  background: var(--color-base);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition);
}

.news-tabs__btn:hover,
.news-tabs__btn.is-active {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: var(--color-base);
}

.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 48px;
}

.pagination__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-family: var(--font-family);
  font-size: 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-base);
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--transition);
}

.pagination__btn:hover,
.pagination__btn.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-base);
}

.pagination__btn:disabled {
  cursor: default;
  opacity: 1;
}

/* ---- Cards ---- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.card {
  background: var(--color-base);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

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

.card__body {
  padding: 24px;
}

.card__title {
  font-size: 18px;
  font-weight: var(--font-weight-bold);
  margin-bottom: 12px;
  color: var(--color-text);
}

.card__text {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  line-height: 1.7;
}

.card__link {
  font-size: 14px;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

/* ---- Stats ---- */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat {
  padding: 32px 16px;
}

.stat__number {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  line-height: 1.2;
}

.stat__number span {
  font-size: 0.5em;
  color: var(--color-accent);
}

.stat__label {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-top: 8px;
}

/* ---- Message ---- */

.message {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  align-items: start;
}

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

.message__name {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-top: 12px;
}

.message__text {
  font-size: 15px;
  line-height: 2;
  color: var(--color-text);
  margin-bottom: 24px;
}

/* ---- CTA Band ---- */

.cta-band {
  background: var(--color-primary);
  color: var(--color-base);
  text-align: center;
  padding: 64px 24px;
}

.cta-band__title {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: var(--font-weight-bold);
  margin-bottom: 12px;
}

.cta-band__phone {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: var(--font-weight-bold);
  margin-bottom: 24px;
  color: var(--color-accent);
}

.cta-band__phone a {
  color: var(--color-accent);
}

.cta-band__phone a:hover {
  color: var(--color-base);
}

/* ---- Footer ---- */

.footer {
  background: #1a1a2e;
  color: #ccc;
  padding: 64px 0 32px;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer__logo {
  font-size: 18px;
  font-weight: var(--font-weight-bold);
  color: var(--color-base);
  margin-bottom: 16px;
}

.footer__logo span {
  color: var(--color-accent);
}

.footer__address {
  font-size: 14px;
  line-height: 1.8;
}

.footer__nav-title {
  font-size: 14px;
  font-weight: var(--font-weight-bold);
  color: var(--color-base);
  margin-bottom: 16px;
}

.footer__nav-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer__nav-list a {
  font-size: 14px;
  color: #ccc;
}

.footer__nav-list a:hover {
  color: var(--color-accent);
}

.footer__bottom {
  border-top: 1px solid #333;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}

.footer__bottom a {
  color: #ccc;
}

.footer__bottom a:hover {
  color: var(--color-accent);
}

/* ---- About Page ---- */

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

.company-table th,
.company-table td {
  padding: 16px 24px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  font-size: 15px;
}

.company-table th {
  width: 200px;
  font-weight: var(--font-weight-bold);
  background: var(--color-bg-gray);
  color: var(--color-primary);
}

.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline__item {
  position: relative;
  padding-bottom: 40px;
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid var(--color-base);
  box-shadow: 0 0 0 2px var(--color-primary);
}

.timeline__year {
  font-size: 14px;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: 4px;
}

.timeline__text {
  font-size: 15px;
  color: var(--color-text);
}

.access-map {
  width: 100%;
  aspect-ratio: 16/9;
  border: none;
  border-radius: var(--radius);
}

.access-info {
  margin-top: 24px;
  font-size: 15px;
  line-height: 1.8;
}

/* ---- Service Page ---- */

.service-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 80px;
}

.service-block--reverse {
  direction: rtl;
}

.service-block--reverse > * {
  direction: ltr;
}

.service-block__image {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius);
}

.service-block__title {
  font-size: 24px;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: 16px;
}

.service-block__text {
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

.service-block__features {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.service-block__features li {
  font-size: 14px;
  padding-left: 20px;
  position: relative;
}

.service-block__features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: var(--font-weight-bold);
}

.flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  text-align: center;
}

.flow__step {
  position: relative;
  padding: 24px 12px;
  background: var(--color-base);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.flow__step:not(:last-child)::after {
  content: "→";
  position: absolute;
  right: -14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  color: var(--color-accent);
  z-index: 1;
}

.flow__number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  margin: 0 auto 12px;
  background: var(--color-primary);
  color: var(--color-base);
  font-size: 14px;
  font-weight: var(--font-weight-bold);
  border-radius: 50%;
}

.flow__title {
  font-size: 14px;
  font-weight: var(--font-weight-bold);
  margin-bottom: 4px;
}

.flow__desc {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* ---- News Detail ---- */

.article {
  max-width: 720px;
  margin: 0 auto;
}

.article__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.article__title {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: var(--font-weight-bold);
  line-height: 1.5;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 2px solid var(--color-border);
}

.article__body {
  font-size: 15px;
  line-height: 2;
}

.article__body p {
  margin-bottom: 20px;
}

.article-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  gap: 16px;
}

.article-nav__link {
  font-size: 14px;
  max-width: 45%;
}

.article-nav__label {
  font-size: 12px;
  color: var(--color-text-muted);
  display: block;
  margin-bottom: 4px;
}

/* ---- Contact Page ---- */

.contact-info {
  text-align: center;
  margin-bottom: 48px;
  padding: 32px;
  background: var(--color-bg-gray);
  border-radius: var(--radius);
}

.contact-info__phone {
  font-size: 28px;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin: 8px 0;
}

.contact-info__phone a {
  color: var(--color-primary);
}

.contact-info__hours {
  font-size: 14px;
  color: var(--color-text-muted);
}

.form {
  max-width: 640px;
  margin: 0 auto;
}

.form__group {
  margin-bottom: 24px;
}

.form__label {
  display: block;
  font-size: 14px;
  font-weight: var(--font-weight-bold);
  margin-bottom: 8px;
}

.form__label .required {
  color: #e53e3e;
  font-size: 12px;
  margin-left: 4px;
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-family);
  font-size: 15px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
  background: var(--color-base);
  color: var(--color-text);
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form__input.is-error,
.form__select.is-error,
.form__textarea.is-error {
  border-color: #e53e3e;
}

.form__error {
  font-size: 12px;
  color: #e53e3e;
  margin-top: 4px;
  display: none;
}

.form__error.is-visible {
  display: block;
}

.form__textarea {
  min-height: 160px;
  resize: vertical;
}

.form__checkbox {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
}

.form__checkbox input {
  margin-top: 4px;
}

.form__submit {
  text-align: center;
  margin-top: 32px;
}

.form__success {
  display: none;
  text-align: center;
  padding: 48px;
  background: #e6f7ee;
  border-radius: var(--radius);
  color: #1a7a4a;
}

.form__success.is-visible {
  display: block;
}

.form__success-title {
  font-size: 20px;
  font-weight: var(--font-weight-bold);
  margin-bottom: 8px;
}

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

.mt-48 {
  margin-top: 48px;
}

/* ---- Responsive ---- */

@media (max-width: 768px) {
  .section {
    padding: var(--section-padding-mobile) 0;
  }

  .nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .mobile-nav {
    display: block;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .message {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .message__photo {
    max-width: 240px;
    margin: 0 auto;
  }

  .footer__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer__bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .service-block,
  .service-block--reverse {
    grid-template-columns: 1fr;
    direction: ltr;
  }

  .flow {
    grid-template-columns: 1fr;
  }

  .flow__step:not(:last-child)::after {
    content: "↓";
    right: auto;
    left: 50%;
    top: auto;
    bottom: -14px;
    transform: translateX(-50%);
  }

  .news-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .company-table th {
    width: 120px;
    padding: 12px 16px;
  }

  .company-table td {
    padding: 12px 16px;
  }

  .article-nav {
    flex-direction: column;
  }

  .article-nav__link {
    max-width: 100%;
  }
}

@media (max-width: 375px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .news-tabs {
    gap: 4px;
  }

  .news-tabs__btn {
    padding: 6px 14px;
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero__content {
    animation: none;
  }

  .card:hover {
    transform: none;
  }

  .btn--primary:hover {
    transform: none;
  }
}