:root{
  --bg:#f6f7f9;--panel:#fff;--ink:#181c24;--ink2:#474e5d;--ink3:#7b8494;
  --line:#e2e6ed;--brand:#1f6feb;--brand-d:#0d4fc0;--brand-l:#e9f0fe;
  --side:#111722;--side-ink:#9ea9bb;--side-hd:#5c6779;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font:15.5px/1.78 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}

.topbar{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.93);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
.topin{max-width:1320px;margin:0 auto;padding:11px 20px;display:flex;align-items:center;gap:16px}
.logo{font-weight:700;font-size:17px;color:var(--ink);display:flex;align-items:center;gap:9px;white-space:nowrap}
.logo i{width:9px;height:9px;border-radius:50%;background:var(--brand);display:block}
.topnav{display:flex;gap:3px;margin-left:auto;align-items:center}
.topnav a{padding:6px 11px;border-radius:7px;color:var(--ink2);font-size:13.5px;white-space:nowrap}
.topnav a:hover{background:var(--brand-l);color:var(--brand-d);text-decoration:none}
.topnav .sep{width:1px;height:16px;background:var(--line);margin:0 5px}

.wrap{max-width:1320px;margin:0 auto;padding:24px 20px 64px;display:grid;
  grid-template-columns:266px minmax(0,1fr);gap:28px;align-items:start}

.side{position:sticky;top:66px;max-height:calc(100vh - 88px);overflow-y:auto;overscroll-behavior:contain;
  background:var(--side);border-radius:14px;padding:14px 10px 18px;color:var(--side-ink);
  scrollbar-width:thin;scrollbar-color:#333c4d transparent}
.side::-webkit-scrollbar{width:6px}
.side::-webkit-scrollbar-thumb{background:#333c4d;border-radius:3px}
.side h4{font-size:10.5px;text-transform:uppercase;letter-spacing:.1em;color:var(--side-hd);
  margin:15px 8px 6px;font-weight:700}
.side a{display:block;padding:6px 10px;border-radius:7px;color:var(--side-ink);font-size:13.5px;line-height:1.45}
.side a:hover{background:rgba(255,255,255,.075);color:#fff;text-decoration:none}
.side a.on{background:var(--brand);color:#fff;font-weight:500}
.side a.sub{padding-left:21px;font-size:13px;color:#8792a5}
.side a.sub:hover{color:#fff}
.side a.sub.on{background:var(--brand);color:#fff}

.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:32px 38px 36px;min-width:0}
.card h1{font-size:28px;margin:0 0 10px;line-height:1.3;font-weight:700;letter-spacing:-.3px}
.sec-h{scroll-margin-top:78px}
.card h2{font-size:20px;margin:36px 0 13px;padding-bottom:9px;border-bottom:1px solid var(--line);font-weight:650}
.card h3{font-size:17px;margin:28px 0 10px;font-weight:650}
.card h4{font-size:15.5px;margin:22px 0 8px;font-weight:650;color:var(--ink2)}
.card p{margin:12px 0;color:var(--ink2)}
.card ul,.card ol{margin:12px 0;padding-left:25px;color:var(--ink2)}
.card li{margin:6px 0}
.card strong{color:var(--ink);font-weight:650}
.card hr{border:0;border-top:1px solid var(--line);margin:28px 0}
.card blockquote{margin:16px 0;padding:12px 17px;background:#fff8e9;border-left:3px solid #e0a13c;
  border-radius:0 8px 8px 0;color:#6a5318;font-size:14.5px}
.card blockquote p{margin:5px 0}
.card code{background:#eef1f6;border:1px solid var(--line);border-radius:5px;padding:1.5px 6px;
  font-size:13px;color:#b02f68;font-family:ui-monospace,SFMono-Regular,Consolas,monospace}
figure{margin:20px 0;text-align:center}
figure img{max-width:100%;height:auto;border:1px solid var(--line);border-radius:9px;background:#fff}
figure.fig-right{float:right;margin:6px 0 18px 22px;max-width:45%}
figure.fig-left{float:left;margin:6px 22px 18px 0;max-width:45%}
figure.fig-right img,figure.fig-left img{max-width:100%}

.wp-table{border-collapse:collapse;width:100%;margin:18px 0;font-size:14.5px}
.wp-table th,.wp-table td{border:1px solid var(--line);padding:9px 13px;text-align:left;
  vertical-align:top;color:var(--ink2)}
.wp-table th{background:#f0f3f8;font-weight:650;color:var(--ink)}
.card > .wp-table{display:block;overflow-x:auto}

.meta{display:flex;gap:9px;flex-wrap:wrap;align-items:center;margin:13px 0 24px;
  padding-bottom:17px;border-bottom:1px solid var(--line);font-size:13px;color:var(--ink3)}
.meta a{color:var(--ink3)}
.pager{display:flex;gap:12px;margin-top:38px;padding-top:22px;border-top:1px solid var(--line);font-size:14px}
.pager a,.pager span{flex:1;padding:12px 16px;background:#f0f3f8;border-radius:9px;color:var(--ink2)}
.pager a:hover{background:var(--brand-l);color:var(--brand-d);text-decoration:none}
.pager span.next{text-align:right}

.hero{background:linear-gradient(135deg,#101d33,#1f6feb);color:#fff;border-radius:16px;padding:46px 42px;margin-bottom:8px}
.hero h1{font-size:35px;margin:0 0 13px;line-height:1.24;letter-spacing:-.5px;color:#fff}
.hero p{font-size:16.5px;color:#c4d4ee;margin:0 0 24px;max-width:790px;line-height:1.7}
.hero .btns{display:flex;gap:12px;flex-wrap:wrap}
.hero .btn{display:inline-block;padding:11px 21px;background:#fff;color:#101d33;border-radius:9px;
  font-weight:600;font-size:14px}
.hero .btn.g{background:rgba(255,255,255,.13);color:#fff;border:1px solid rgba(255,255,255,.26)}
.hero .btn:hover{text-decoration:none;opacity:.9}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(262px,1fr));gap:14px;margin:16px 0 8px}
.gcard{background:#fbfcfd;border:1px solid var(--line);border-radius:12px;padding:18px 20px;display:block;color:inherit}
.gcard:hover{border-color:var(--brand);background:#fff;box-shadow:0 3px 16px rgba(31,111,235,.09);text-decoration:none}
.gcard b{display:block;color:var(--ink);font-size:15.5px;margin-bottom:4px;font-weight:650}
.gcard span{font-size:12.5px;color:var(--ink3);line-height:1.5;display:block}

footer{max-width:1320px;margin:0 auto;padding:22px 20px 46px;color:var(--ink3);font-size:13px;
  border-top:1px solid var(--line)}
footer a{color:var(--ink3);text-decoration:underline}

@media(max-width:940px){
  .wrap{grid-template-columns:1fr;gap:16px}
  .side{position:static;max-height:none;border-radius:12px}
  .card{padding:22px 18px 28px}
  .hero{padding:30px 22px}
  .hero h1{font-size:26px}
  .topnav .hide{display:none}
  figure.fig-right,figure.fig-left{float:none;max-width:100%;margin:18px 0}
}