* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f4f6fb;
  color: #222;
}
.container {
  max-width: 750px;
  margin: 0 auto;
  padding: 20px;
}
.card {
  background: #fff;
  border-radius: 18px;
  box-shadow: 0 8px 24px rgba(0,0,0,.08);
  overflow: hidden;
  padding-bottom: 20px;
}
.banner {
  width: 100%;
  aspect-ratio: 3 / 2;
  max-height: 30vw;
  min-height: 140px;
  object-fit: cover;
  object-position: top;
  display: block;
}
h1 {
  margin: 20px 0 10px;
  color: #d40000;
  text-align: center;
  font-size: 34px;
}
.subtitle {
  text-align: center;
  font-size: 18px;
  color: #666;
  margin: 0 20px 20px;
}
.content {
  padding: 0 22px;
  font-size: 18px;
  line-height: 1.8;
  text-align: justify;
  color: #333;
}

.content p {
  margin-bottom: 18px;
}
.content p:last-child {
  margin-bottom: 0;
}

.back {
  display: inline-block;
  margin: 22px auto 0;
  padding: 12px 22px;
  background: navy;
  color: #fff;
  text-decoration: none;
  border-radius: 10px;
  font-weight: bold;
  transition: opacity 0.2s;
}
.back:hover {
  opacity: 0.9;
}
.btn-wrap {
  text-align: center;
}
@media(max-width:600px) {
  .container {
    padding: 12px;
  }
  h1 {
    font-size: 28px;
  }
  .subtitle, .content {
    font-size: 16px;
  }
}