:root {
  --bg-color: #fff;
  --text-color: #00171f;
  --header-bg: #00171f;
  --nav-bg: #003459;
  --highlight: #007ea7;
  --accent: #00a8e8;
}

html,
body {
  height: 100%;
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
}

body {
  min-height: 100vh;
  margin: 0;
  height: 100%;
}

.wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.wrapper main {
  flex: 1;
}

header {
  background-color: var(--header-bg);
  color: white;
  padding: 1em 2em;
  text-align: center;
}
header h1 {
  margin: 0;
  font-size: 2.3em;
  letter-spacing: 0.03em;
}

nav {
  background-color: var(--nav-bg);
  padding: 0.6em 0;
  text-align: center;
}
nav a {
  color: white;
  text-decoration: none;
  margin: 0 1em;
  font-size: 1.12em;
}
nav a:hover {
  color: var(--accent);
}

main {
  flex: 1;
  min-height: 420px;
  padding: 2em 1.5em 0.5em 1.5em;
  max-width: 1000px;
  margin: 0 auto;
  background-color: var(--bg-color);
  font-size: 1.08em;
  box-sizing: border-box;
}

h2 {
  color: var(--nav-bg);
  font-size: 1.3em;
  margin: 0.8em 0 1em 0;
}

/* ==== 公司沿革表格 ==== */
.history-table {
  width: 100%;
  max-width: 800px;
  margin: 2em auto 0 auto;
  border-collapse: collapse;
  background: #fff;
  font-size: 1.07em;
  border: 2px solid #003459; /* 外框線顏色粗細自訂 */
  box-shadow: 0 2px 10px rgba(0, 50, 100, 0.06);
  border-radius: 10px;
  overflow: hidden;
}
.history-table th,
.history-table td {
  padding: 1em 1.2em;
  border-bottom: 1.5px solid #3d597b;
  text-align: left;
}
.history-table th {
  background: #003459;
  color: #fff;
  font-weight: 600;
  font-size: 1.13em;
}
.history-table tr:last-child td {
  border-bottom: none;
}
.history-table td:first-child {
  color: #007ea7;
  font-weight: bold;
  width: 100px;
  white-space: nowrap;
}

footer {
  background-color: var(--header-bg);
  color: white;
  padding: 0.5em 0;
  text-align: center;
  font-size: 1.02em;
  margin-top: auto;
  min-height: unset;
  line-height: 1.2;
}

.product-gallery-table {
  width: 100%;
  max-width: 980px;
  margin: 1.5em auto 2em auto;
  border-collapse: separate;
  border-spacing: 16px 0;
  table-layout: fixed;
}

.product-gallery-table td {
  vertical-align: top;
  text-align: center;
  padding: 0;
}

.product-gallery-image {
  width: 100%;
  max-width: 260px;
  height: 180px;
  object-fit: contain;
  background: #f7fafd;
  border: 1.5px solid #cce3ee;
  border-radius: 8px 8px 0 0;
}

.product-gallery-caption {
  display: block;
  padding: 0.6em 0.3em 1em 0.3em;
  background: #f7fafd;
  font-size: 1em;
  color: #003459;
  border-radius: 0 0 8px 8px;
  min-height: 2.5em;
}