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

html {
  min-width: 1200px;
}

body {
  min-width: 1200px;
  overflow-x: auto;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
  color: #1f1f1f;
  background: #fff;
  line-height: 1.8;
}

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

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

/* ヘッダー */
.site-header {
  width: 100%;
  min-width: 1200px;
  height: 76px;
  background: #fff;
  border-bottom: 1px solid #eee;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  width: 1200px;
  height: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 260px 1fr 300px;
  align-items: center;
}

.logo img {
  height: 46px;
  margin-left: 28px;
}

.global-nav {
  display: flex;
  justify-content: center;
  gap: 46px;
  font-size: 15px;
  letter-spacing: .08em;
}

.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 180px;
  background: #fff;
  border: 1px solid #ddd;
  border-top: 3px solid #b58a35;
  box-shadow: 0 5px 15px rgba(0,0,0,.08);
  display: none;
  z-index: 999;
}

.dropdown-menu a {
  display: block;
  padding: 12px 18px;
  white-space: nowrap;
}

.dropdown-menu a:hover {
  background: #f5f2ec;
}

.dropdown:hover .dropdown-menu {
  display: block;
}

/* 言語切替 */
.language-switch {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}

.language-switch a {
  padding: 6px 10px;
  border: 1px solid #c9b07a;
  background: #fff;
}

.language-switch a.active {
  background: #b58a35;
  color: #fff;
}

/* 共通 */
.section {
  padding: 50px 0;
}

.section-label {
  color: #b58a35;
  letter-spacing: .18em;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 14px;
}

.center-title {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 22px;
  text-align: center;
  font-size: 24px;
  letter-spacing: .1em;
  margin-bottom: 38px;
}

.center-title span {
  width: 42px;
  height: 1px;
  background: #b58a35;
}

.gold-btn {
  display: inline-block;
  padding: 15px 44px;
  background: #b58a35;
  color: #fff;
  font-weight: 600;
  letter-spacing: .08em;
  transition: all .3s ease;
  white-space: nowrap;
}

.gold-btn:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 24px rgba(0,0,0,.12);
}

/* メインビジュアル */
.page-hero {
  position: relative;
  min-width: 1200px;
  min-height: 460px;
  background:
    linear-gradient(
      90deg,
      rgba(255,255,255,.88),
      rgba(255,255,255,.45),
      rgba(255,255,255,.05)
    ),
    url("images/vietnam/history-hero.jpg") center/cover no-repeat;
  overflow: hidden;
}

.breadcrumb {
  width: 1200px;
  margin: 0 auto;
  padding: 24px 0 0 40px;
  font-size: 12px;
  color: #555;
}

.page-hero-copy {
  width: 1200px;
  margin: 0 auto;
  padding: 68px 0 80px 40px;
}

.page-hero h1 {
  font-size: 58px;
  letter-spacing: .18em;
  line-height: 1.35;
  margin-bottom: 24px;
}

.page-hero-copy p:last-child {
  font-size: 20px;
  letter-spacing: .08em;
  line-height: 2;
}

/* 現在の展開状況 */
.overview {
  background: #f7f3ec;
}

.overview-grid {
  width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid #eee4d3;
  background: #fff;
}

.overview-card {
  text-align: center;
  padding: 38px 34px;
  border-right: 1px solid #ddd4c5;
}

.overview-card:last-child {
  border-right: none;
}

.overview-card strong {
  display: block;
  color: #b58a35;
  font-size: 64px;
  line-height: 1;
  font-weight: 400;
  margin-bottom: 14px;
}

.overview-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.overview-card p {
  font-size: 14px;
}

/* リード */
.lead-grid {
  width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 48px;
  align-items: center;
}

.lead-photo img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.lead-text h2 {
  font-size: 34px;
  letter-spacing: .1em;
  line-height: 1.65;
  margin-bottom: 18px;
}

.lead-text h2::after {
  content: "";
  display: block;
  width: 42px;
  height: 2px;
  background: #b58a35;
  margin-top: 16px;
}

.lead-text p {
  font-size: 15px;
  margin-bottom: 16px;
}

/* タイムライン */
.timeline-section {
  background: #f7f3ec;
}

.timeline {
  width: 1200px;
  margin: 0 auto;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 178px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #b58a35;
}

.timeline-item {
  display: grid;
  grid-template-columns: 130px 96px 1fr;
  align-items: center;
  margin-bottom: 34px;
  position: relative;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-year {
  color: #b58a35;
  font-size: 42px;
  letter-spacing: .04em;
  text-align: right;
  padding-right: 30px;
}

.timeline-dot {
  width: 18px;
  height: 18px;
  background: #b58a35;
  border: 5px solid #fff;
  border-radius: 50%;
  box-shadow: 0 0 0 1px #b58a35;
  margin: 0 auto;
  z-index: 1;
}

.timeline-content {
  background: #fff;
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 28px;
  align-items: center;
  padding: 22px;
  border: 1px solid #eee4d3;
  transition: all .3s ease;
}

.timeline-content:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 24px rgba(0,0,0,.1);
}

.timeline-content img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.timeline-content h3 {
  font-size: 22px;
  letter-spacing: .06em;
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: 14px;
}

/* エリア別 */
.area-grid {
  width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.area-card {
  background: #f1f0ee;
  transition: all .3s ease;
}

.area-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 24px rgba(0,0,0,.12);
}

.area-card img {
  width: 100%;
  height: 210px;
  object-fit: cover;
}

.area-card div {
  padding: 24px 26px 28px;
}

.area-card p {
  color: #b58a35;
  font-size: 12px;
  letter-spacing: .16em;
  font-weight: 600;
  margin-bottom: 6px;
}

.area-card h3 {
  font-size: 24px;
  margin-bottom: 8px;
}

.area-card span {
  display: inline-block;
  margin-top: 10px;
  padding: 7px 22px;
  background: #050505;
  color: #fff;
  font-size: 13px;
}

/* ギャラリー */
.gallery {
  background: #f7f3ec;
}

.gallery-grid {
  width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.gallery-grid img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

/* CTA */
.cta {
  min-width: 1200px;
  padding: 46px 0;
  background: #fff;
}

.cta-inner {
  width: 1200px;
  margin: 0 auto;
  background: #f7f3ec;
  display: grid;
  grid-template-columns: 1.1fr auto 220px;
  align-items: center;
  gap: 40px;
  padding: 36px 60px;
}

.cta h2 {
  font-size: 28px;
  line-height: 1.7;
  letter-spacing: .08em;
  font-weight: 500;
}

.cta p {
  font-size: 14px;
  margin-top: 6px;
}

.cta img {
  max-height: 160px;
  margin-left: auto;
}

/* フッター */
.footer {
  min-width: 1200px;
  background: #5b5750;
  color: #fff;
  padding: 26px 0 18px;
}

.footer-inner {
  width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 230px 1fr 240px;
  align-items: center;
  gap: 30px;
}

.footer-logo {
  height: 46px;
}

.footer nav {
  display: flex;
  justify-content: center;
  gap: 34px;
  font-size: 13px;
}

.footer nav a {
  color: rgba(255,255,255,.9);
}

.footer-japan-link {
  border: 1px solid #ddd;
  padding: 12px;
  text-align: center;
  font-size: 13px;
}

.copyright {
  margin-top: 22px;
  text-align: center;
  font-size: 11px;
  color: #ddd;
}