/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background: #f5f5f5;
}

/* Header */
header {
  background: #1a237e;
  color: #fff;
  text-align: center;
  padding: 40px 20px;
}
header h1 {
  font-size: 2rem;
  margin-bottom: 10px;
}
header p {
  font-size: 1.1rem;
}

/* Stock list */
.stock-list {
  max-width: 800px;
  margin: 40px auto;
  padding: 0 20px;
}
.stock-item {
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
  transition: box-shadow .3s;
  background: #fff;
}
.stock-item:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.stock-item h2 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}
.stock-item p {
  font-size: .95rem;
  color: #555;
}

/* Floating WhatsApp button */
.whatsapp-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #25D366;
  color: #fff;
  padding: 12px 18px;
  border-radius: 50px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  display: flex;
  align-items: center;
  font-size: 1rem;
  text-decoration: none;
}
.whatsapp-btn img {
  width: 24px;
  height: 24px;
  margin-right: 8px;
}

/* 禁用右键与选择 */
body {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
body, a {
  -webkit-touch-callout: none;
}