/* Axin科技博客 -- 主题 */
:root{--bg:#0d0d14;--card:#16161f;--hover:#1e1e2a;--border:#2a2a3a;--text:#e4e4ec;--sec:#9494a8;--dim:#5a5a70;--blue:#38bdf8;--purple:#a78bfa;--r:10px}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-font-smoothing:antialiased}
body{font-family:-apple-system,BlinkMacSystemFont,"SF Pro","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.7;min-height:100vh;background-image:radial-gradient(ellipse 500px 400px at 30% 20%,rgba(56,189,248,.04),transparent),radial-gradient(ellipse 400px 400px at 70% 60%,rgba(167,139,250,.03),transparent)}
::selection{background:rgba(56,189,248,.2)}
a{color:var(--text);text-decoration:none;transition:color .2s}
a:hover{color:var(--blue)}
.container{max-width:680px;margin:0 auto;padding:0 16px}
.navbar{position:fixed;top:0;left:0;right:0;background:rgba(13,13,20,.88);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border);z-index:100;height:50px}
.nav-inner{max-width:680px;margin:0 auto;padding:0 16px;height:50px;display:flex;align-items:center;justify-content:space-between}
.nav-brand{font-size:14px;font-weight:700;color:var(--text)!important;letter-spacing:-.3px}
.nav-brand i{font-style:normal;color:var(--blue)}
.nav-links{display:flex;gap:2px;list-style:none}
.nav-links a{color:var(--dim);font-size:13px;padding:6px 10px;border-radius:6px}
.nav-links a:hover{color:var(--text);background:var(--hover)}
.search-form input{background:transparent;border:none;color:var(--text);font-size:12px;width:80px;padding:4px 6px;outline:none}
.search-btn{background:none;border:none;cursor:pointer;padding:4px;color:var(--dim)}
.nav-toggle{display:none;flex-direction:column;gap:3px;cursor:pointer;background:none;border:none;padding:4px}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--dim);border-radius:2px}

/* Desktop: Blog header */
.blog-header{padding:80px 0 30px;text-align:center}
.blog-header h1{font-size:1.5em;font-weight:700;margin-bottom:6px}
.blog-header h1 i{font-style:normal;color:var(--blue)}
.blog-header p{font-size:13px;color:var(--dim)}
.blog-header .divider{width:40px;height:3px;background:linear-gradient(90deg,var(--blue),var(--purple));border-radius:2px;margin:14px auto 0}

/* Desktop: Post card list */
.post-list{display:flex;flex-direction:column;gap:10px;padding-bottom:40px}
.post-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:18px 20px;transition:all .2s}
.post-card:hover{border-color:rgba(56,189,248,.3)}
.post-cover{display:none}
.post-meta{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--dim);margin-bottom:5px}
.post-meta .cat{color:var(--purple);font-weight:500}
.post-meta .date{opacity:.6}
.post-title{font-size:1em;font-weight:600;line-height:1.45;margin-bottom:4px}
.post-title a{color:var(--text)}
.post-title a:hover{color:var(--blue)}
.post-excerpt{font-size:13px;color:var(--sec);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.read-more{display:inline-block;margin-top:10px;font-size:12px;color:var(--blue);font-weight:500}
.read-more:hover{opacity:.8}

/* Post detail */
.post-page{padding-top:80px;max-width:720px;margin:0 auto;padding-left:20px;padding-right:20px}
.post-page .meta{margin-bottom:14px;font-size:12px;color:var(--dim);display:flex;gap:10px}
.post-page .meta .cat{color:var(--purple)}
.post-page h1{font-size:1.7em;font-weight:700;line-height:1.4;margin-bottom:26px}
.post-body{font-size:18px;line-height:2;color:var(--sec)}
.post-body p{margin-bottom:1.1em}
.post-body a{color:var(--blue);text-decoration:underline}
.post-body blockquote{border-left:2px solid var(--blue);padding:10px 16px;margin:1.2em 0;background:var(--card);border-radius:0 8px 8px 0;font-size:13px;color:var(--dim)}
.post-body hr{border:none;border-top:1px solid var(--border);margin:1.5em 0}
.post-body img{max-width:100%;border-radius:var(--r);margin:1em 0}
.post-body code{font-size:12px;background:var(--hover);padding:2px 5px;border-radius:4px;color:var(--blue)}
.post-body pre{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:14px 18px;overflow-x:auto;margin:1em 0}
.post-body pre code{background:none;padding:0;color:var(--sec)}

/* Comments */
.comments{margin-top:36px;padding-bottom:30px;max-width:680px;margin-left:auto;margin-right:auto;padding-left:16px;padding-right:16px}
.comments h3{font-size:13px;font-weight:600;margin-bottom:14px;color:var(--dim)}
.comment-list{list-style:none}
.comment-item{margin-bottom:12px}
.comment-body{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:12px 14px;font-size:13px}
.comment-author{font-weight:600;color:var(--blue);font-size:12px}
.comment-time{font-size:10px;color:var(--dim);margin-left:8px}
.comment-content{color:var(--sec);margin-top:4px;font-size:13px}
.comment-content p{margin-bottom:4px}
.comment-reply{margin-left:22px}
.respond{margin-top:18px}
.respond input,.respond textarea{width:100%;background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:8px 12px;color:var(--text);font-size:13px;outline:none;font-family:inherit;transition:border-color .2s}
.respond input:focus,.respond textarea:focus{border-color:var(--blue)}
.respond textarea{resize:vertical;min-height:60px;margin-bottom:8px}
.respond button{background:var(--blue);color:#000;border:none;border-radius:var(--r);padding:7px 18px;font-size:12px;font-weight:600;cursor:pointer}
.respond button:hover{opacity:.85}

/* Footer */
.footer{border-top:1px solid var(--border);padding:24px 0;margin-top:28px}
.footer-inner{max-width:680px;margin:0 auto;padding:0 16px;display:flex;gap:28px}
.footer h4{font-size:10px;font-weight:600;color:var(--dim);margin-bottom:5px;letter-spacing:.5px}
.footer a{display:block;font-size:12px;color:var(--sec);margin-bottom:2px}
.footer a:hover{color:var(--blue)}
.footer p{font-size:12px;color:var(--dim)}

/* Desktop: Pagination - prev/next only */
.pg-wrap{padding:0 16px 40px}
.pg{display:flex;justify-content:center;gap:12px}
.pg a{display:inline-flex;align-items:center;justify-content:center;padding:8px 20px;border-radius:8px;font-size:13px;color:var(--sec);background:var(--card);border:1px solid var(--border);transition:all .15s}
.pg a:hover{color:var(--blue);border-color:var(--blue)}
.pg .cur{display:none}
.pg a:not(.prev):not(.next){display:none}

/* Archive */
.arc{padding-top:80px;max-width:680px;margin:0 auto;padding-left:16px;padding-right:16px}
.arc h1{font-size:1.2em;font-weight:700;margin-bottom:24px}
.arc-yr{margin-bottom:20px}
.arc-yr h2{font-size:12px;font-weight:600;color:var(--dim);margin-bottom:8px;letter-spacing:.5px}
.arc-it{display:flex;gap:12px;padding:3px 0}
.arc-it .d{color:var(--dim);min-width:56px;font-size:11px}
.arc-it a{color:var(--sec);font-size:13px}
.arc-it a:hover{color:var(--blue)}

/* 404 */
.e404{padding:100px 20px;text-align:center}
.e404 h1{font-size:3em;font-weight:700;color:var(--blue);margin-bottom:6px}
.e404 p{color:var(--dim);margin-bottom:20px}

/* ========================================== */
/* MOBILE (≤640px): Full-screen image + title  */
/* ========================================== */


/* Post navigation: prev/next */
.post-nav{display:flex;justify-content:space-between;margin-top:36px;padding-top:20px;border-top:1px solid var(--border)}
.post-nav .prev,.post-nav .next{max-width:45%}
.post-nav a{font-size:13px;color:var(--sec);transition:color .2s;line-height:1.5}
.post-nav a:hover{color:var(--blue)}

@media(max-width:640px){
.post-nav{margin-top:24px;padding-top:16px}
.post-nav a{font-size:12px}
}
@media(max-width:640px){
.nav-links{display:none;position:absolute;top:50px;left:0;right:0;flex-direction:column;padding:4px 14px;background:rgba(13,13,20,.98);border-bottom:1px solid var(--border)}
.nav-links.open{display:flex}
.nav-links a{width:100%;padding:8px 10px}
.nav-toggle{display:flex}
.search-form input{width:60px}

/* Hide desktop elements */
.blog-header{display:none}
.footer{display:none}

/* Full-screen post card */
.post-list{padding-bottom:0;margin:0}
.post-card{display:flex;flex-direction:column;min-height:calc(100vh - 50px);padding:0;border:none;border-radius:0;background:transparent;margin:0}

/* Square cover image at top */
.post-cover{display:block;width:100%;aspect-ratio:1/1;overflow:hidden;flex-shrink:0}
.post-cover img{width:100%;height:100%;object-fit:cover;display:block}

/* Content below image */
.post-inner{flex:1;display:flex;flex-direction:column;justify-content:center;padding:16px 20px 10px;text-align:left}
.post-meta{justify-content:flex-start;font-size:10px;margin-bottom:8px}
.post-title{font-size:1.1em;line-height:1.4;margin-bottom:8px}
.post-excerpt{font-size:13px;line-height:1.6;color:var(--sec);display:block;-webkit-line-clamp:unset;overflow:visible}
.read-more{margin-top:8px;padding:6px 16px;border:1px solid var(--blue);border-radius:16px;font-size:11px;align-self:flex-start}

/* Pagination: fixed at bottom - prev/next only */
.pg-wrap{position:fixed;bottom:0;left:0;right:0;padding:12px 16px 16px;background:linear-gradient(transparent,rgba(13,13,20,1) 40%);z-index:50}
.pg{display:flex;justify-content:space-between;gap:0}
.pg a{display:inline-flex;align-items:center;padding:10px 18px;border-radius:8px;font-size:13px;font-weight:500;background:rgba(22,22,31,.9);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid var(--border);color:var(--sec);transition:all .15s;min-width:0}
.pg a:hover{color:var(--blue);border-color:var(--blue)}
.pg .prev{margin-right:auto}
.pg .next{margin-left:auto}
.pg .cur{display:none}
.pg a:not(.prev):not(.next){display:none}

/* Post detail page */
.post-page{padding-top:60px;padding-left:20px;padding-right:20px}
.post-page h1{font-size:1.7em;line-height:1.4}
.post-body{font-size:18px;line-height:2}
.post-body p{margin-bottom:1.4em}
.post-body pre{padding:10px 12px}
.comments{padding-left:20px;padding-right:20px}
.arc{padding-top:60px;padding-left:12px;padding-right:12px}
}