/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy: #1a2540;
  --navy-light: #2c3e6b;
  --gray-bg: #f5f5f3;
  --gray-mid: #e8e8e6;
  --gray-text: #666;
  --white: #fff;
  --accent: #1a5276;
  --font-jp: 'Noto Serif JP', 'Yu Mincho', 'YuMincho', serif;
  --font-sans: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--navy);
  background: var(--white);
  line-height: 1.7;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ===== Typography helpers ===== */
.spaced {
  letter-spacing: 0.2em;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}
.section-title .jp {
  display: block;
  font-family: var(--font-jp);
  font-size: 1.75rem;
  font-weight: 400;
  letter-spacing: 0.25em;
  color: var(--navy);
}
.section-title .en {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  color: var(--gray-text);
  margin-top: 0.4rem;
  text-transform: uppercase;
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--gray-mid);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.logo-mark {
  width: 44px;
  height: auto;
  flex-shrink: 0;
}
.logo-text {
  font-family: var(--font-jp);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--navy);
}

.header-tagline {
  font-size: 0.75rem;
  color: var(--gray-text);
  letter-spacing: 0.05em;
}

.global-nav {
  background: var(--gray-bg);
  border-top: 1px solid var(--gray-mid);
}
.global-nav ul {
  display: flex;
  justify-content: center;
}
.global-nav ul li a {
  display: block;
  padding: 0.75rem 2.5rem;
  text-align: center;
  transition: background 0.2s;
}
.global-nav ul li a:hover {
  background: var(--gray-mid);
}
.global-nav ul li a .nav-jp {
  display: block;
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  color: var(--navy);
}
.global-nav ul li a .nav-en {
  display: block;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--gray-text);
  margin-top: 0.1rem;
}

/* ===== Hero ===== */
.hero {
  margin-top: 120px;
  position: relative;
  height: calc(100vh - 120px);
  min-height: 500px;
  overflow: hidden;
  background: var(--navy);
}

.hero-slides {
  position: absolute;
  inset: 0;
}
.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1s ease;
  background-size: cover;
  background-position: center;
}
.hero-slide.active { opacity: 1; }

.hero-slide-1 {
  background-image: linear-gradient(135deg, #1a2540 0%, #2c3e6b 50%, #1a5276 100%);
}
.hero-slide-2 {
  background-image: linear-gradient(135deg, #2c3e6b 0%, #1a5276 50%, #1a2540 100%);
}
.hero-slide-3 {
  background-image: linear-gradient(135deg, #1a5276 0%, #1a2540 50%, #2c3e6b 100%);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 20, 40, 0.45);
}

.hero-content {
  position: absolute;
  bottom: 10%;
  right: 5%;
  text-align: right;
  color: var(--white);
}

.hero-content .hero-jp {
  display: block;
  font-family: var(--font-jp);
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 400;
  letter-spacing: 0.3em;
  line-height: 1.6;
  text-shadow: 0 2px 8px rgba(0,0,0,0.4);
}
.hero-content .hero-sub {
  display: block;
  font-size: clamp(0.8rem, 1.5vw, 1rem);
  letter-spacing: 0.3em;
  margin-top: 0.75rem;
  opacity: 0.85;
}

.hero-dots {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
}
.hero-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: background 0.2s;
  border: none;
}
.hero-dot.active { background: var(--white); }

/* ===== Section cards (page navigation) ===== */
.page-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.page-card {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
  display: block;
}
.page-card-img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.page-card:hover .page-card-img { transform: scale(1.05); }

.page-card-placeholder {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: filter 0.4s ease;
}

.page-card-label {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: rgba(255,255,255,0.92);
  padding: 1rem 1.5rem;
  text-align: center;
  transition: background 0.2s;
}
.page-card:hover .page-card-label { background: var(--white); }

.page-card-label .jp {
  display: block;
  font-family: var(--font-jp);
  font-size: 1.2rem;
  letter-spacing: 0.25em;
  color: var(--navy);
}
.page-card-label .en {
  display: block;
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--gray-text);
  margin-top: 0.25rem;
  text-transform: uppercase;
}

/* ===== News section ===== */
.news-section {
  background: var(--gray-bg);
  padding: 5rem 2rem;
}
.news-inner {
  max-width: 800px;
  margin: 0 auto;
}

.news-list li {
  border-bottom: 1px solid var(--gray-mid);
  padding: 1rem 0;
  display: flex;
  gap: 2rem;
  align-items: baseline;
}
.news-date {
  font-size: 0.85rem;
  color: var(--gray-text);
  white-space: nowrap;
  min-width: 80px;
}
.news-text {
  font-size: 0.95rem;
  color: var(--navy);
}
.news-empty {
  text-align: center;
  color: var(--gray-text);
  font-size: 0.9rem;
  padding: 2rem 0;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--navy);
  color: var(--white);
  padding: 3rem 2rem 1.5rem;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}
.footer-logo .logo-mark {
  opacity: 0.85;
}
.footer-logo .logo-text {
  color: var(--white);
}
.footer-address {
  margin-top: 1rem;
  font-size: 0.85rem;
  line-height: 2;
  color: rgba(255,255,255,0.75);
}
.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 0.5rem;
}
.footer-nav ul li a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.75);
  letter-spacing: 0.1em;
  transition: color 0.2s;
}
.footer-nav ul li a:hover { color: var(--white); }

.footer-copy {
  text-align: center;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  padding-top: 1.5rem;
}

/* ===== Inner page layout ===== */
.page-hero {
  margin-top: 120px;
  background: var(--navy);
  padding: 4rem 2rem;
  text-align: center;
  color: var(--white);
}
.page-hero h1 {
  font-family: var(--font-jp);
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: 0.3em;
}
.page-hero .page-hero-en {
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  margin-top: 0.5rem;
  opacity: 0.7;
  text-transform: uppercase;
}

.breadcrumb {
  background: var(--gray-bg);
  padding: 0.75rem 2rem;
  font-size: 0.8rem;
  color: var(--gray-text);
  letter-spacing: 0.05em;
}
.breadcrumb a { color: var(--gray-text); }
.breadcrumb a:hover { color: var(--navy); }
.breadcrumb span { margin: 0 0.5rem; }

.content-section {
  max-width: 900px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

/* ===== Company table ===== */
.company-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}
.company-table th, .company-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--gray-mid);
  font-size: 0.95rem;
  vertical-align: top;
  text-align: left;
}
.company-table th {
  width: 30%;
  color: var(--gray-text);
  font-weight: 400;
  white-space: nowrap;
  background: var(--gray-bg);
}

/* ===== Service cards ===== */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}
.service-card {
  border: 1px solid var(--gray-mid);
  padding: 2rem 1.5rem;
  background: var(--white);
  transition: box-shadow 0.2s;
}
.service-card:hover {
  box-shadow: 0 4px 20px rgba(26,37,64,0.1);
}
.service-card-icon {
  width: 48px; height: 48px;
  background: var(--navy);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  color: var(--white);
  font-size: 1.25rem;
}
.service-card h3 {
  font-family: var(--font-jp);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  margin-bottom: 0.75rem;
}
/* カードが横並びのとき、タイトルを2行分の高さで揃えて
   本文の開始位置をカード間でそろえる（スマホ縦積み時は適用しない） */
@media (min-width: 769px) {
  .service-card h3 { min-height: 3.4em; }
}
.service-card p {
  font-size: 0.9rem;
  color: var(--gray-text);
  line-height: 1.8;
}

/* ===== Contact form ===== */
.contact-form {
  max-width: 700px;
  margin: 0 auto;
}
.form-group {
  margin-bottom: 1.5rem;
}
.form-group label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
  color: var(--navy);
  letter-spacing: 0.05em;
}
.form-group .required {
  display: inline-block;
  background: var(--navy);
  color: var(--white);
  font-size: 0.65rem;
  padding: 0.1rem 0.4rem;
  margin-left: 0.5rem;
  letter-spacing: 0.05em;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--gray-mid);
  background: var(--white);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--navy);
  outline: none;
  transition: border-color 0.2s;
  appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--navy);
}
.form-group textarea { resize: vertical; min-height: 150px; }

.form-privacy {
  background: var(--gray-bg);
  border: 1px solid var(--gray-mid);
  padding: 1rem 1.25rem;
  font-size: 0.85rem;
  color: var(--gray-text);
  line-height: 1.8;
  margin-bottom: 1.5rem;
  max-height: 120px;
  overflow-y: auto;
}

.form-checkbox {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
  font-size: 0.9rem;
}
.form-checkbox input { width: auto; }

.btn-submit {
  display: block;
  width: 100%;
  max-width: 300px;
  margin: 0 auto;
  padding: 1rem;
  background: var(--navy);
  color: var(--white);
  font-family: var(--font-sans);
  font-size: 1rem;
  letter-spacing: 0.2em;
  border: none;
  cursor: pointer;
  transition: background 0.2s;
  text-align: center;
}
.btn-submit:hover { background: var(--navy-light); }

.form-success {
  display: none;
  text-align: center;
  padding: 3rem 1rem;
  color: var(--navy);
}
.form-success h3 {
  font-family: var(--font-jp);
  font-size: 1.5rem;
  letter-spacing: 0.2em;
  margin-bottom: 1rem;
}
.form-success p { color: var(--gray-text); }

/* ===== Mobile nav ===== */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--navy);
  transition: all 0.3s;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .header-top { padding: 0.75rem 1rem; }
  .header-tagline { display: none; }
  .nav-toggle { display: flex; }

  .global-nav { display: none; }
  .global-nav.open { display: block; }
  .global-nav ul { flex-direction: column; }
  .global-nav ul li a { padding: 0.75rem 1.5rem; border-bottom: 1px solid var(--gray-mid); }

  .hero { height: 60vh; min-height: 380px; }
  .hero-content { right: 1rem; bottom: 6%; }
  .hero-content .hero-jp { font-size: 1.75rem; }

  .page-cards { grid-template-columns: 1fr; }
  .page-card { aspect-ratio: 16/7; }

  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }

  .company-table th { width: 35%; }

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

  .content-section { padding: 3rem 1rem; }
  .page-hero { padding: 2.5rem 1rem; }
  .page-hero h1 { font-size: 1.5rem; }

  .global-nav ul li a { padding: 0.75rem 1rem; }
}