body {
  margin: 0;
  font-family: "Helvetica Neue", Arial, sans-serif;
  color: #222;
  background-color: #fff;
  overflow-x: hidden;
}

/* Header */
.sub-header {
  text-align: center;
  padding: 20px 0;
  border-bottom: 1px solid #ddd;
}
.logo {
  font-size: 48px;
  color: #4ec6f5;
  font-weight: bold;
  margin: 0;
}

/* Article List */
.article-list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
  padding: 60px 20px;
  max-width: 1000px;
  margin: 0 auto;
}
.article-item {
  display: flex;
  gap: 30px;
  width: 100%;
  border-bottom: 1px solid #ffffff;
  padding-bottom: 30px;
}
.article-item img {
  width: 20%;
  height: auto;
  border-radius: 8px;
  object-fit: cover;
}
.article-info {
  flex: 1;
}
.article-info h2 a {
  text-decoration: none;
  color: #222;
  font-size: 28px;
  transition: color 0.3s;
}
.article-info h2 a:hover {
  color: #4ec6f5;
}
.subtitle {
  font-size: 16px;
  color: #666;
}
.date {
  font-size: 14px;
  color: #999;
  margin-top: 10px;
}

/* Article Page */
.article-main .hero {
  position: relative;
}
.article-main .hero img {
  width: 100%;
  height: auto;
  display: block;
}
.hero-text {
  position: absolute;
  bottom: 30px;
  left: 50px;
  color: white;
  text-shadow: 0 2px 5px rgba(0,0,0,0.5);
}
.hero-text h1 {
  font-size: 48px;
  margin: 0;
}
.hero-text .date {
  font-size: 16px;
}

/* Article Content */
.content {
  max-width: 900px;
  margin: 60px auto;
  padding: 0 20px;
  line-height: 1.8;
}
.content img {
  width: 100%;
  height: auto;
  margin: 40px 0;
  border-radius: 8px;
}

/* ----- FOOTER ----- */
  footer {
    text-align: center;
    padding: 20px;
    font-size: 14px;
  }
  footer img {
    height: 27px;
    vertical-align: middle;
    margin-left: 8px;
  }