* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
:root{
  --main:#007acc;
  --accent:#ff6b35;
  --dark-bg:#1a1d24;
  --dark-card:#242831;
  --text:#cbd5e0;
  --text-light:#a0aec0;
  --text-mute:#718096;
  --border:#333842;
  --code-bg:#1e2229;
  --code-color:#e2e8f0;
}
[data-theme="dark"] body{
  background:var(--dark-bg);
  color:var(--text);
  font-family: Inter,system-ui,-apple-system,sans-serif;
  line-height: 1.7;
}
[data-theme="light"] body{
  background:#ffffff;
  color:#2d3748;
}
[data-theme="light"]{
  --dark-bg:#ffffff;
  --dark-card:#f7fafc;
  --text:#2d3748;
  --text-light:#4a5568;
  --text-mute:#718096;
  --border:#e2e8f0;
  --code-bg:#f7fafc;
  --code-color:#2d3748;
}

/* 导航头部 */
header{
  display:flex;
  justify-content:space-between;
  padding:1rem 5rem;
  align-items:center;
  position:sticky;
  top:0;
  background:color-mix(in srgb, var(--dark-bg) 95%, transparent);
  backdrop-filter:blur(6px);
  z-index:99;
  border-bottom: 1px solid var(--border);
}
.logo{
  font-size:1.4rem;
  font-weight:bold;
}
.logo span{
  color:var(--main)
}
nav{
  display:flex;
  align-items:center;
}
nav a{
  margin:0 12px;
  color:var(--text-light);
  text-decoration:none;
  transition: 0.2s;
  white-space:nowrap;
}
nav a:hover{
  color:var(--main)
}
.tool-bar{
  display:flex;
  gap:14px;
  align-items:center;
}
.tool-bar input{
  padding:6px 12px;
  border-radius:4px;
  border:1px solid var(--border);
  background:var(--dark-card);
  color:var(--text);
}
#theme{
  padding:6px 12px;
  border:none;
  background:var(--main);
  color:#fff;
  border-radius:4px;
  cursor:pointer;
}

/* Hero首屏 */
.hero{
  text-align:center;
  padding:6rem 2rem;
  background-image:radial-gradient(#007acc10 1px,transparent 1px);
  background-size:20px 20px
}
.hero h1{
  font-size:2.6rem;
  margin-bottom:16px;
}
.hero p{
  max-width:620px;
  margin:0 auto;
  color:var(--text-light);
}
.btn-wrap{
  margin-top:32px;
  display:flex;
  gap:16px;
  justify-content:center;
}
.btn{
  padding:10px 24px;
  border-radius:4px;
  text-decoration:none;
  transition:0.2s;
}
.btn-primary{
  background:var(--main);
  color:#fff
}
.btn-outline{
  border:1px solid var(--main);
  color:var(--main)
}
.update-tip{
  margin-top:40px;
  font-size:13px;
  color:var(--text-mute)
}

/* 容器 */
.container{
  max-width:1200px;
  margin:0 auto;
  padding:0 2rem
}
.section-title{
  font-size:1.6rem;
  margin:6rem 0 2rem;
  display:flex;
  align-items:center;
  gap:10px;
}
.section-title::before{
  content:"";
  width:4px;
  height:20px;
  background:var(--main);
  display:block;
}

/* ========== 核心：左图右文文章卡片 ========== */
.article-list{
  display:flex;
  flex-direction:column;
  gap:24px;
}
.article-card{
  background:var(--dark-card);
  border-radius:10px;
  display:flex;
  gap:24px;
  padding:20px;
  transition:0.25s ease;
  border:1px solid transparent;
}
.article-card:hover{
  transform: translateY(-4px);
  box-shadow:0 8px 30px rgba(0,0,0,0.2);
  border-color: rgba(0,122,204,0.2);
}
/* 左侧图片区域 */
.card-img{
  flex: 0 0 240px;
  width: 240px;
  height:160px;
  border-radius:8px;
  overflow:hidden;
  position:relative;
  /* 无图时科技渐变占位 */
  background: linear-gradient(135deg,#007acc22,#6366f122);
  display:flex;
  align-items:center;
  justify-content:center;
}
.card-img::after{
  content:"</>";
  font-size:32px;
  color:rgba(0,122,204,0.3);
  font-family:Consolas;
}
.card-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:0.3s ease;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
}
.article-card:hover .card-img img{
  transform:scale(1.06);
}
/* 右侧文字区域 */
.card-content{
  flex:1;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
}
.tag{
  display:inline-block;
  padding:3px 10px;
  background:rgba(255,107,53,0.12);
  color:var(--accent);
  border-radius:3px;
  font-size:12px;
  margin-bottom:8px;
}
.card-content h3{
  font-size:1.25rem;
  margin-bottom:10px;
}
.card-content h3 a{
  color:inherit;
  text-decoration:none;
}
.card-content h3 a:hover{
  color:var(--main);
}
.card-desc{
  color:var(--text-light);
  font-size:14px;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:16px;
}
.card-meta{
  font-size:12px;
  color:var(--text-mute);
  display:flex;
  gap:16px;
}

/* 底部 */
footer{
  margin-top:8rem;
  padding:3rem 2rem;
  border-top:1px solid var(--border);
  text-align:center;
  color:var(--text-mute);
  font-size:14px;
}
footer a{
  color:var(--main);
  text-decoration:none;
}

/* 分页 */
.pagination{
  margin-top:3rem;
  display:flex;
  justify-content:center;
  gap:8px;
}
.page-link{
  padding:8px 14px;
  background:var(--dark-card);
  border:1px solid var(--border);
  border-radius:4px;
  color:var(--text);
  font-size:14px;
  transition:0.2s;
  text-decoration:none;
}
.page-link:hover{
  background:var(--main);
  color:#fff;
  border-color:var(--main);
}
.page-link.active{
  background:var(--main);
  color:#fff;
  border-color:var(--main);
}
.page-dots{
  padding:8px 4px;
  color:var(--text-mute);
}

/* 移动端适配：图片切换到上方 */
@media screen and (max-width:768px){
  .article-card{
    flex-direction:column;
  }
  .card-img{
    flex:none;
    width:100%;
    height:180px;
  }
  header{
    padding:1rem 1.5rem;
  }
  nav{
    display:none;
  }
  .hero{
    padding:4rem 1.5rem;
  }
  .hero h1{
    font-size:2rem;
  }
}