:root{
  --bg:#0b1a24;
  --panel:#0f2431;
  --fg:#e6f2f8;
  --dim:#8fb3c4;
  --line:rgba(255,255,255,.08);
  --accent:#4fc3f7;
}
*{box-sizing:border-box}
html,body{margin:0}
body{
  background:var(--bg);color:var(--fg);
  font:16px/1.85 -apple-system,"Segoe UI","Microsoft YaHei",system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}

.wrap{
  display:flex;align-items:flex-start;
  max-width:1080px;margin:0 auto;padding:0 24px;
}

/* ---- 侧栏 ---- */
.side{
  position:sticky;top:0;flex:0 0 268px;
  height:100vh;overflow-y:auto;
  padding:40px 28px 40px 0;
  border-right:1px solid var(--line);
}
.brand{
  display:block;font-size:21px;letter-spacing:.14em;
  margin-bottom:8px;color:var(--fg);
}
.brand::after{content:" 🐋";font-size:.8em}
.brand small{
  display:block;margin-top:10px;font-size:12px;line-height:1.7;
  letter-spacing:0;color:var(--dim);font-weight:400;
}
.side nav{margin-top:26px;display:flex;flex-direction:column;gap:2px}
.side nav a{
  display:flex;gap:10px;align-items:baseline;
  padding:9px 12px;border-radius:8px;
  font-size:14px;color:var(--dim);
  transition:background .15s,color .15s;
}
.side nav a b{
  font-weight:600;font-size:11px;color:rgba(79,195,247,.55);
  letter-spacing:.08em;
}
.side nav a:hover{background:rgba(255,255,255,.04);color:var(--fg)}
.side nav a.on{background:rgba(79,195,247,.12);color:var(--fg)}
.side nav a.on b{color:var(--accent)}

/* ---- 正文 ---- */
main{flex:1 1 auto;min-width:0;padding:56px 0 90px 56px}
h1{
  font-size:32px;line-height:1.35;margin:0 0 14px;
  letter-spacing:.02em;font-weight:650;
}
.lead{color:var(--dim);font-size:17px;margin:0 0 8px;max-width:36em}
.meta{
  display:inline-block;margin:0 0 26px;
  font-size:12px;letter-spacing:.14em;color:var(--accent);
  border:1px solid rgba(79,195,247,.3);border-radius:999px;
  padding:3px 12px;
}

/* ---- 首页卡片 ---- */
.cards{display:flex;flex-direction:column;gap:10px;margin-top:34px}
.card{
  display:grid;
  grid-template-columns:44px 1fr auto;
  grid-template-areas:"num t m" "num s m";
  gap:2px 14px;align-items:center;
  padding:16px 18px;border-radius:12px;
  background:var(--panel);border:1px solid transparent;
  transition:border-color .15s,transform .15s;
}
.card:hover{border-color:rgba(79,195,247,.45);transform:translateX(3px)}
.card .num{grid-area:num;font-size:13px;font-weight:700;color:rgba(79,195,247,.5)}
.card .t{grid-area:t;font-size:16px;font-weight:600}
.card .s{grid-area:s;font-size:13px;color:var(--dim)}
.card .m{grid-area:m;font-size:12px;color:var(--dim);white-space:nowrap}

/* ---- 文章体 ---- */
.body h2{
  font-size:20px;margin:42px 0 12px;padding-left:12px;
  border-left:3px solid var(--accent);letter-spacing:.02em;
}
.body h3{font-size:16px;margin:28px 0 8px;color:#cfe7f2}
.body p{margin:14px 0}
.body ul,.body ol{margin:14px 0;padding-left:22px}
.body li{margin:6px 0}
.body a{color:var(--accent);border-bottom:1px solid rgba(79,195,247,.35)}
.body code{
  background:rgba(255,255,255,.08);border-radius:4px;
  padding:1px 6px;font-size:14px;
  font-family:"Cascadia Code",Consolas,monospace;
}
.body pre{
  background:#08131a;border:1px solid var(--line);border-radius:10px;
  padding:16px 18px;overflow-x:auto;margin:18px 0;
}
.body pre code{background:none;padding:0;font-size:13px;line-height:1.7}
.body blockquote{
  margin:18px 0;padding:2px 0 2px 18px;
  border-left:3px solid rgba(79,195,247,.35);
  color:var(--dim);
}

/* ---- 翻页 ---- */
.pager{
  border:none;border-top:1px solid var(--line);
  margin:56px 0 0;display:flex;gap:18px;justify-content:space-between;
  padding-top:0;
}
.pager a{
  margin-top:22px;font-size:14px;color:var(--dim);
  max-width:45%;transition:color .15s;
}
.pager a:hover{color:var(--accent)}
.pager .next{margin-left:auto;text-align:right}

footer{
  margin-top:70px;padding-top:22px;border-top:1px solid var(--line);
  color:var(--dim);font-size:12px;letter-spacing:.06em;
}

/* ---- 窄屏 ---- */
@media(max-width:820px){
  .wrap{display:block;padding:0 18px}
  .side{
    position:static;height:auto;flex:none;
    border-right:none;border-bottom:1px solid var(--line);
    padding:34px 0 20px;
  }
  .side nav{flex-direction:row;flex-wrap:wrap;gap:6px;margin-top:18px}
  .side nav a{padding:6px 10px;background:rgba(255,255,255,.04)}
  main{padding:34px 0 70px}
  h1{font-size:25px}
  .card{grid-template-columns:32px 1fr;grid-template-areas:"num t" "num s"}
  .card .m{display:none}
}