/*
Theme Name: 天佑的AI学习小站
Author: Yoger
Description: 天佑AI学习博客主题（动态版，支持文章正文）
Version: 2.0
*/
:root{
  --primary:#534AB7; --primary-dark:#3C3489; --primary-light:#EEEDFE;
  --text:#444441; --sub:#888780; --border:#E3E1DA; --bg:#F7F6FB;
  --green-bg:#E1F5EE; --green:#0F6E56;
  --orange-bg:#FAEEDA; --orange:#854F0B;
  --blue-bg:#E6F1FB; --blue:#185FA5;
  --red-bg:#FAECE7; --red:#993C1D;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--text);background:var(--bg);line-height:1.6;font-size:15px}
a{text-decoration:none;color:inherit}

header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20}
.nav{max-width:1040px;margin:0 auto;padding:0 20px;height:56px;display:flex;align-items:center;gap:20px}
.logo{font-size:17px;font-weight:600;color:var(--primary-dark);white-space:nowrap}
.nav-links{display:flex;gap:18px;margin-left:8px;flex:1}
.nav-links a{font-size:13px;color:var(--sub)}
.nav-links a.active,.nav-links a:hover{color:var(--primary)}
.search{display:flex;align-items:center;background:var(--primary-light);border-radius:18px;padding:6px 14px;font-size:12px;color:var(--sub)}
.search input{border:none;background:none;outline:none;font-size:12px;width:110px;color:var(--text)}

.hero{background:linear-gradient(135deg,#EEEDFE,#E7E4FB);border-left:4px solid var(--primary)}
.hero-in{max-width:1040px;margin:0 auto;padding:36px 20px 24px}
.hero h1{font-size:26px;color:var(--primary-dark);margin-bottom:10px}
.hero p{color:#5F5E5A;font-size:14px;margin-bottom:4px}
.btn{display:inline-block;margin-top:16px;background:var(--primary);color:#fff;padding:9px 22px;border-radius:8px;font-size:13px;font-weight:500}
.btn:hover{background:var(--primary-dark)}

.yoger-banner{max-width:1040px;margin:18px auto 0;padding:0 20px}
.yoger-card{background:linear-gradient(120deg,#534AB7,#7A6FE0);border-radius:14px;
  padding:20px 24px;color:#fff;display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  box-shadow:0 8px 24px rgba(83,74,183,.28)}
.yoger-card .robot{font-size:38px;line-height:1}
.yoger-card .yt{flex:1;min-width:180px}
.yoger-card .yt b{font-size:17px;display:block;margin-bottom:3px}
.yoger-card .yt span{font-size:13px;opacity:.92}
.yoger-card .ask{background:#fff;color:var(--primary);border:none;border-radius:22px;
  padding:11px 26px;font-size:14px;font-weight:600;cursor:pointer;white-space:nowrap}
.yoger-card .ask:hover{background:#F0EEFF}

.wrap{max-width:1040px;margin:0 auto;padding:24px 20px;display:grid;grid-template-columns:1fr 260px;gap:24px;align-items:start}

.tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.tag{font-size:12px;padding:5px 12px;border-radius:14px;font-weight:500;cursor:pointer;white-space:nowrap}
.tag.all{background:var(--primary-light);color:var(--primary)}
.tag.g{background:var(--green-bg);color:var(--green)}
.tag.o{background:var(--orange-bg);color:var(--orange)}
.tag.b{background:var(--blue-bg);color:var(--blue)}
.tag.r{background:var(--red-bg);color:var(--red)}

.card{background:#fff;border:1px solid var(--border);border-radius:10px;overflow:hidden;margin-bottom:16px;transition:.2s}
.card:hover{box-shadow:0 6px 20px rgba(83,74,183,.10);transform:translateY(-2px)}
.card a{color:inherit;display:block}
.card .cover{height:120px;display:flex;align-items:center;justify-content:center;flex-direction:column;color:#fff;padding:0 20px;text-align:center}
.card .cover b{font-size:16px}
.card .cover span{font-size:12px;opacity:.9;margin-top:4px}
.card .body{padding:14px 16px}
.card .body h3{font-size:15px;color:#333;margin-bottom:6px}
.card .body p{font-size:13px;color:#5F5E5A;margin:2px 0 8px}
.card .meta{font-size:12px;color:var(--sub)}

/* 文章正文页 */
.post-head{padding:24px 24px 0}
.post-head h1{font-size:24px;color:var(--primary-dark);margin-bottom:10px;line-height:1.45}
.post-content{padding:18px 24px 28px;font-size:15px;line-height:1.95;color:#333}
.post-content h2{font-size:19px;color:var(--primary-dark);margin:24px 0 10px}
.post-content h3{font-size:16px;color:#333;margin:18px 0 8px}
.post-content p{margin:0 0 14px}
.post-content ul,.post-content ol{margin:0 0 14px 22px}
.post-content li{margin-bottom:6px}
.post-content img{max-width:100%;border-radius:8px;margin:10px 0}
.post-content code{background:var(--primary-light);padding:2px 6px;border-radius:4px;font-size:13px}
.post-content blockquote{border-left:3px solid var(--primary);padding:6px 14px;color:#5F5E5A;background:#faf9fe;margin:0 0 14px;border-radius:0 8px 8px 0}
.back-home{display:inline-block;margin:4px 0 20px;color:var(--primary);font-size:14px}

.side .box{background:#fff;border:1px solid var(--border);border-radius:10px;padding:16px;margin-bottom:16px}
.side h4{font-size:14px;color:#333;margin-bottom:12px;padding-left:8px;border-left:3px solid var(--primary)}
.author{text-align:center}
.avatar{width:56px;height:56px;border-radius:50%;background:var(--primary-light);margin:0 auto 8px;display:flex;align-items:center;justify-content:center;color:var(--primary-dark);font-weight:600;overflow:hidden}
.avatar img{width:100%;height:100%;object-fit:cover}
.author .name{font-weight:600}
.author .desc{font-size:12px;color:var(--sub)}

.qr-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.qr{text-align:center}
.qr .code{width:100%;aspect-ratio:1;border:1px solid var(--border);border-radius:8px;object-fit:cover;background:#fff}
.qr .label{font-size:11px;color:var(--sub);margin-top:5px}

.hot li{list-style:none;font-size:13px;color:#5F5E5A;padding:6px 0;border-bottom:1px dashed var(--border)}
.hot li:last-child{border:none}
.hot li::before{content:"·";color:var(--primary);font-weight:bold;margin-right:6px}
.hot a:hover{color:var(--primary)}

.sub-row{display:flex;gap:6px;margin-top:8px}
.sub-row input{flex:1;border:1px solid var(--border);border-radius:6px;padding:7px 10px;font-size:12px;outline:none}
.sub-row button{background:var(--primary);color:#fff;border:none;border-radius:6px;padding:0 14px;font-size:12px;cursor:pointer}

footer{background:#fff;border-top:1px solid var(--border);margin-top:20px}
.foot{max-width:1040px;margin:0 auto;padding:18px 20px;text-align:center;font-size:12px;color:var(--sub);line-height:1.9}
.foot a{color:var(--sub)}
.ai-note{font-size:11px;color:#B0AEA6}

.fab{position:fixed;right:22px;bottom:22px;z-index:40;background:linear-gradient(120deg,#534AB7,#7A6FE0);
  color:#fff;border-radius:30px;padding:12px 20px;font-size:14px;font-weight:600;cursor:pointer;
  box-shadow:0 8px 24px rgba(83,74,183,.4);display:flex;align-items:center;gap:8px}
.fab:hover{transform:translateY(-2px)}

.chat{position:fixed;right:22px;bottom:80px;z-index:41;width:320px;max-width:calc(100vw - 44px);
  background:#fff;border-radius:14px;box-shadow:0 16px 48px rgba(0,0,0,.22);overflow:hidden;display:none}
.chat.open{display:block}
.chat-head{background:linear-gradient(120deg,#534AB7,#7A6FE0);color:#fff;padding:14px 16px;display:flex;align-items:center;gap:10px}
.chat-head .rb{font-size:22px}
.chat-head b{font-size:15px}
.chat-head small{font-size:11px;opacity:.9;display:block}
.chat-head .x{margin-left:auto;cursor:pointer;font-size:18px;opacity:.9}
.chat-body{padding:14px;background:var(--bg);min-height:140px;font-size:13px}
.bubble{background:#fff;border:1px solid var(--border);border-radius:10px;padding:10px 12px;color:#555;display:inline-block}
.chat-in{display:flex;gap:6px;padding:10px;border-top:1px solid var(--border);background:#fff}
.chat-in input{flex:1;border:1px solid var(--border);border-radius:8px;padding:8px 10px;font-size:13px;outline:none}
.chat-in button{background:var(--primary);color:#fff;border:none;border-radius:8px;padding:0 14px;font-size:13px;cursor:pointer}

@media(max-width:760px){
  .wrap{grid-template-columns:1fr}
  .nav-links{display:none}
  .hero h1{font-size:22px}
  .search input{width:80px}
  .tags{overflow-x:auto}
}