/* 小陈的技术分享 — 个人博客样式（静态站，无任何外部依赖） */
:root{
  --bg:#0b0d12;
  --panel:#11141b;
  --card:#14171f;
  --border:#242938;
  --text:#e8ebf2;
  --muted:#98a2b3;
  --accent:#6d7cff;
  --accent-soft:#8ea0ff;
  --green:#34d399;
  --maroon:#b4445c;
  --gold:#d5b06a;
  --radius:10px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg);
  color:var(--text);
  font:15px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
a{color:var(--accent-soft);text-decoration:none}
a:hover{text-decoration:underline}
img,svg{max-width:100%}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}

/* 顶栏 */
.topbar{border-bottom:1px solid var(--border);background:rgba(11,13,18,.92);position:sticky;top:0;z-index:10;backdrop-filter:blur(6px)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:600}
.brand:hover{text-decoration:none}
.logo{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,#5b5fe8,#34d399);color:#fff;font-size:14px}
.nav{display:flex;gap:22px}
.nav a{color:var(--muted);font-size:14px}
.nav a:hover{color:var(--text);text-decoration:none}
.nav a.active{color:var(--text)}

/* Hero */
.hero{border-bottom:1px solid var(--border);background:
  radial-gradient(1000px 420px at 85% -10%,rgba(93,95,232,.18),transparent 60%),
  radial-gradient(700px 320px at 10% 110%,rgba(52,211,153,.10),transparent 60%)}
.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:40px;padding:64px 0 56px;align-items:center}
.kicker{letter-spacing:.18em;font-size:12px;color:var(--gold);margin:0 0 14px}
.hero h1{margin:0;font-size:clamp(34px,5vw,54px);line-height:1.18;letter-spacing:.01em}
.hero .l1{color:#fff}
.hero .l2{color:var(--accent-soft)}
.sub{color:var(--muted);max-width:560px;margin:18px 0 26px}
.btns{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:10px 22px;border-radius:8px;font-size:14px}
.btn.solid{background:var(--accent);color:#fff}
.btn.solid:hover{background:#5a68f0;text-decoration:none}
.btn.ghost{border:1px solid var(--border);color:var(--text)}
.btn.ghost:hover{border-color:var(--accent);text-decoration:none}
.stats{display:flex;gap:48px;margin-top:38px}
.stats b{display:block;font-size:26px;color:#fff}
.stats span{color:var(--muted);font-size:13px}

/* Hero 右侧装饰卡片 */
.hero-right{position:relative;height:360px}
.stack{position:absolute;inset:0}
.s-card{position:absolute;width:min(330px,86%);background:#151924;border:1px solid #2a3142;border-radius:var(--radius);padding:16px 18px;display:flex;flex-direction:column;gap:6px;box-shadow:0 14px 34px rgba(0,0,0,.38)}
.s-card b{font-size:17px}
.s-card i{font-style:normal;color:var(--muted);font-size:13px}
.s-tag{font-size:10px;letter-spacing:.16em;color:#c7d0e8;border:1px solid #3a4258;border-radius:4px;padding:2px 8px;align-self:flex-start;margin-bottom:4px}
.c1{top:6px;left:2%;transform:rotate(-2deg);border-top:3px solid #4f46e5}
.c2{top:118px;left:16%;transform:rotate(1.6deg);border-top:3px solid #34d399}
.c3{top:232px;left:6%;transform:rotate(-1.2deg);border-top:3px solid #b4445c}

/* 区块 */
.section{padding:56px 0;border-bottom:1px solid var(--border)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.sec-head h2{margin:6px 0 0;font-size:26px}
.sec-head .kicker{margin-bottom:0}
.more{font-size:13px;color:var(--muted)}
.more:hover{color:var(--accent-soft)}

/* 主题卡 */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.cap{padding:12px 16px;font-weight:600;color:#fff;font-size:14px;letter-spacing:.06em}
.cb1{background:#2f3a8f}
.cb2{background:#6d3550}
.cb3{background:#1b5e46}
.cb4{background:#5a4a1e}
.card .bd{padding:16px;display:flex;flex-direction:column;gap:12px;flex:1}
.card .bd p{margin:0;color:var(--muted);font-size:13.5px;flex:1}
.card .bd a{font-size:13px}

/* 文章列表 */
.posts{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.post{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;display:flex;flex-direction:column;gap:12px}
.post-top{display:flex;justify-content:space-between;align-items:center}
.chip{font-size:11px;letter-spacing:.12em;color:#fff;padding:3px 9px;border-radius:3px}
.ch-llm{background:#3a4bd8}
.ch-gh{background:#8a3d59}
.ch-deploy{background:#1e7a54}
.ch-observe{background:#4b5a7a}
.ch-paper{background:#6a4a8f}
.ch-note{background:#7a6a2f}
.rt{color:var(--muted);font-size:12px}
.post h3{margin:0;font-size:18px;line-height:1.5}
.post h3 a{color:#fff}
.post p{margin:0;color:var(--muted);font-size:13.5px;flex:1}
.post-bot{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12.5px}
.post-bot .read{font-size:13px}

/* 关于条 */
.about-box{display:flex;gap:22px;align-items:center;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px}
.avatar{flex:0 0 auto;width:72px;height:72px;border-radius:50%;background:linear-gradient(135deg,#5b5fe8,#34d399);display:flex;align-items:center;justify-content:center;font-size:30px;color:#fff;font-weight:600}
.about-box h3{margin:0 0 8px;font-size:19px}
.about-box p{margin:0;color:var(--muted);font-size:13.5px}

/* 文章页 */
.article-wrap{padding:48px 0 72px}
.crumb{color:var(--muted);font-size:13px;margin:0 0 22px}
.article{max-width:760px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:40px 44px}
.article h1{margin:16px 0 8px;font-size:30px;line-height:1.4}
.article .meta{color:var(--muted);font-size:13px;margin:0 0 26px;border-bottom:1px solid var(--border);padding-bottom:18px}
.article h2{font-size:20px;margin:34px 0 12px}
.article p{margin:0 0 16px}
.article ul,.article ol{margin:0 0 16px;padding-left:22px}
.article li{margin:4px 0}
.article blockquote{margin:0 0 16px;padding:12px 18px;border-left:3px solid var(--accent);background:#10131b;color:var(--muted);border-radius:0 8px 8px 0}
.article hr{border:0;border-top:1px solid var(--border);margin:28px 0}
.article .back{margin-top:34px;padding-top:18px;border-top:1px solid var(--border);font-size:13.5px}

/* 页脚 */
.footer{padding:34px 0 40px}
.footer-inner{display:flex;flex-direction:column;gap:6px;align-items:center;text-align:center;color:var(--muted);font-size:13px}
.footer-inner p{margin:0}

@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;padding:44px 0}
  .hero-right{display:none}
  .cards{grid-template-columns:1fr 1fr}
  .posts{grid-template-columns:1fr}
  .article{padding:28px 22px}
}
@media (max-width:560px){
  .cards{grid-template-columns:1fr}
  .stats{gap:28px}
}