/* ===== 全局 ===== */

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

body{
    font-family:"Microsoft YaHei",Arial,sans-serif;
    background:#f5f7fa;
    color:#333;
    line-height:1.8;
}

a{
    color:#1677ff;
    text-decoration:none; /* 全局去下划线 */
}

a:hover{
    color:#0b5ed7;
}

/* ===== 页面宽度 ===== */

header,
.search,
.intro,
main,
.seo-content,
.tags,
.friend,
footer{
    max-width:1200px;
    margin:auto;
    padding:20px;
}

/* ===== Header ===== */

header{
    background:#fff;
    border-radius:12px;
    margin-top:20px;
    box-shadow:0 2px 10px rgba(0,0,0,.06);
}

.logo{
    text-align:center;
}

.logo h1{
    font-size:36px;
    color:#1677ff;
}

.logo p{
    margin-top:10px;
    color:#777;
}

/* ===== 导航 ===== */

nav ul{
    display:flex;
    justify-content:center;
    flex-wrap:wrap;
    list-style:none;
    gap:12px;
    margin-top:20px;
}

nav a{
    display:block;
    padding:10px 18px;
    border-radius:30px;
    background:#f2f2f2;
    transition:.3s;
}

nav a:hover{
    background:#1677ff;
    color:#fff;
}

/* ===== 搜索 ===== */

.search form{
    display:flex;
    max-width:700px;
    margin:auto;
}

.search input{
    flex:1;
    padding:14px;
    border:1px solid #ddd;
    border-radius:8px 0 0 8px;
    outline:none;
}

.search button{
    padding:14px 24px;
    border:none;
    background:#1677ff;
    color:#fff;
    border-radius:0 8px 8px 0;
    cursor:pointer;
}

/* ===== 内容 ===== */

section{
    margin-top:30px;
}

section h2{
    margin-bottom:18px;
    color:#1677ff;
}

/* ===== 卡片 ===== */

.card-list{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
    gap:20px;
}

.card{
    background:#fff;
    border-radius:12px;
    padding:22px;
    box-shadow:0 3px 10px rgba(0,0,0,.08);
    transition:.3s;
}

.card:hover{
    transform:translateY(-5px);
    box-shadow:0 10px 25px rgba(0,0,0,.15);
}

.card h3{
    margin-bottom:12px;
}

.card p{
    color:#666;
    margin-bottom:18px;
}

.card a{
    display:inline-block;
    padding:8px 16px;
    background:#1677ff;
    color:#fff;
    border-radius:6px;
}

/* ===== 原版标签（保留span兼容） ===== */

.tags{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
}

.tags span{
    background:#1677ff;
    color:#fff;
    padding:8px 16px;
    border-radius:30px;
}

/* ===== 新版标签（a按钮系统） ===== */

.tag-box{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    margin-top:10px;
}

.tag-box a{
    display:inline-block;
    padding:8px 14px;
    background:#f5f7ff;
    border:1px solid #dfe6ff;
    border-radius:20px;
    font-size:14px;
    color:#1677ff;
    text-decoration:none;
    transition:0.2s;
}

.tag-box a:hover{
    background:#1677ff;
    color:#fff;
    border-color:#1677ff;
}

/* ===== 友情链接 ===== */

.friend{
    display:flex;
    gap:15px;
    flex-wrap:wrap;
}

.friend a{
    background:#fff;
    padding:10px 18px;
    border-radius:8px;
    box-shadow:0 2px 8px rgba(0,0,0,.08);
}
/* ===== Footer ===== */

footer{
    margin:40px auto;
    text-align:center;
    color:#888;
}

/* ===== 图片 ===== */

img{
    max-width:100%;
    height:auto;
    display:block;
}

/* ===== 手机适配 ===== */

@media (max-width:768px){

header{
    margin:0;
    border-radius:0;
}

.logo h1{
    font-size:28px;
}

.logo p{
    font-size:14px;
}

.search,
.intro,
main,
.tags,
.friend,
footer,
.seo-content{
    padding:15px;
}

.search form{
    display:flex;
}

.search input{
    font-size:16px;
}

.card-list{
    grid-template-columns:1fr;
}

nav ul{
    gap:8px;
}

nav a{
    padding:8px 14px;
    font-size:14px;
}

.card{
    padding:18px;
}

.friend{
    flex-direction:column;
}

.friend a{
    text-align:center;
}

}