/* ─── Reset & 全局 ─── */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: "PingFang TC","Helvetica Neue",Helvetica,Arial,sans-serif;
  line-height: 1.6;
  color: #333;
}

/* ─── 頁首 & 導航 ─── */
.site-header {
  background: #0B2A4C;
  color: #fff;
}
.site-header .container {
  display: flex;
  align-items: center;
  padding: 1rem;
}
.site-header .logo {
  font-size: 1.5rem;
  line-height: 1;
  color: #fff;
  text-decoration: none;
}
.site-header .nav-group {
  display: flex;
  align-items: center;
  margin-left: auto;
}
.site-header nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}
.site-header nav li {
  position: relative;
}
.site-header nav a {
  color: #fff;
  text-decoration: none;
  font-size: 1.1rem;
  text-transform: uppercase;
  padding: 0.25rem 0;
  display: inline-block;
}

.site-header nav a::after {
  content: "";
  position: absolute;
  bottom: -24px;
  left: 0;
  width: 0;
  height: 3px;
  background: #BF9940;
  transition: width 0.25s ease-in-out;
}
.site-header nav a:hover::after {
  width: 100%;
}
/* 聯絡我們 按鈕 */
.site-header .contact-btn {
  border: 1px solid #BF9940;
  padding: 0.5rem 1rem;
  margin-left: 2rem;
  color: #fff;
  text-decoration: none;
  text-transform: uppercase;
  font-size: 1.3rem;
  border-radius: 1px;
}
.site-header .contact-btn:hover {
  background: rgba(255,180,0,0.1);
}

/* ─── 面包屑 Breadcrumbs ─── */
.breadcrumb-nav {
  background: #fff;
}
.breadcrumb-nav .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}
.breadcrumbs {
  display: flex;
  align-items: center;
  list-style: none;
  font-size: 0.9rem;
  margin: 1rem 0;
  padding: 0;
}
.breadcrumbs li {
  white-space: nowrap;
}
.breadcrumbs li + li::before {
  content: "›";
  margin: 0 0.5rem;
  color: #666;
}
.breadcrumbs a {
  color: #0047AB;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.breadcrumbs a:hover {
  border-bottom-color: #0047AB;  /* 單一藍色下劃線 */
}
.breadcrumbs li.current {
  color: #333;                   /* 當前項目不可點 */
}

/* ─── 橫幅 Banner ─── */
.banner img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  display: block;
}

/* ─── 響應式網格 Grid ─── */
.grid-container {
  max-width: 1400px;
  margin: 2rem auto;
  padding: 0 0.5rem;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(5, 1fr);
}
@media (max-width: 1400px) {
  .grid-container { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 1200px) {
  .grid-container { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 900px) {
  .grid-container { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .grid-container { grid-template-columns: repeat(1, 1fr); }
}

/* ─── Grid 項目 ─── */
.grid-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
}
.grid-item img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: 4px;
}
.grid-item h3 {
  position: relative;
  margin-top: 0.5rem;
  font-size: 1rem;
  text-align: center;
  color: #0047AB;
  padding-bottom: 0.25rem;
}
.grid-item h3::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: #BF9940;
  transition: width 0.25s ease-in-out;
}
.grid-item:hover h3::after {
  width: 100%;
}

/* ─── 介紹頁 Intro Layout ─── */
.intro-layout {
  display: flex;
  flex-wrap: wrap;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
  gap: 2rem;
}
.intro-image,
.intro-text {
  flex: 1 1 300px;
}
.responsive-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
}
.intro-text h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}
.intro-text .content {
  line-height: 1.6;
  color: #333;
}
.intro-snippet {
  font-size: 1.1rem;
  color: #555;
  margin-bottom: 1.5rem;
}

/* ─── 地圖 Map Section ─── */
.map-section {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1rem;
}
.map-section h2 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.map-section iframe {
  width: 100%;
  height: 400px;
  border: none;
  border-radius: 4px;
}

/* ─── 響應式 Responsiveness ─── */
@media (max-width: 768px) {
  .intro-layout {
    flex-direction: column;
  }
}