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

body {
  font-family: "Segoe UI", Arial, sans-serif;
  background: #fdfdfd;
  color: #222;
  line-height: 1.6;
}

/* 頁首 */
header {
  background: #111;
  color: white;
  padding: 20px;
  text-align: center;
}
header h1 {
  font-size: 2em;
  letter-spacing: 1px;
}

/* 導覽列 */
nav {
  background: #fff9f9;
  padding: 15px 0;
  text-align: center;
  border-bottom: 1px solid #eee;
}
nav a {
  color: #000;
  margin: 0 20px;
  text-decoration: none;
  font-weight: bold;
  padding-bottom: 5px;
  border-bottom: 2px solid transparent;
  transition: border-color 0.3s;
}
nav a:hover {
  border-bottom: 2px solid grey;
}

/* Hero 主畫面 */
.hero {
  background: linear-gradient(to right, #ffedcc, #fff2f2);
  text-align: center;
  padding: 80px 20px;
}
.hero h2 {
  font-size: 2.2em;
  margin-bottom: 10px;
}
.hero p {
  font-size: 1.1em;
  color: #444;
  margin-bottom: 25px;
}
.hero button {
  background: #111;
  color: #fff;
  border: none;
  padding: 12px 24px;
  font-size: 1em;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s;
}
.hero button:hover {
  background: #444;
}

/* 頁尾 */
footer {
  background: #222;
  color: #ccc;
  text-align: center;
  padding: 20px 0;
  margin-top: 40px;
  font-size: 0.9em;
}
footer a {
  color: #ccc;
  text-decoration: none;
}
footer a:hover {
  text-decoration: underline;
}