*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:17px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:#1f2937;background:#fff}
a{color:#c2410c;text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
[hidden]{display:none!important}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);-webkit-backdrop-filter:saturate(180%) blur(12px);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid transparent;transition:border-color .2s;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;line-height:1.5}
.site-header.scrolled{border-bottom-color:#e8eaee}
.site-header a:hover{text-decoration:none}
.bar{display:flex;align-items:center;height:64px;gap:32px}
.brand{display:flex;align-items:center}
.site-header .logo{display:block;height:35px;width:auto}
.links{display:flex;gap:18px;flex:1}
.links a,.signin{color:#4a5160;font-size:14px;white-space:nowrap;transition:color .15s}
.links a:hover,.signin:hover{color:#ff9900}
.links a[aria-current]{color:#0b1220;font-weight:600}
.actions,.guest{display:flex;align-items:center;gap:16px}
.locale{display:inline-flex;align-items:center;gap:5px;height:32px;padding:0 10px;border-radius:8px;border:1px solid #e3e6eb;color:#4a5160;font-size:13px;white-space:nowrap}
.locale:hover{border-color:#ff9900;color:#e47911}
.btn.sm{display:inline-flex;align-items:center;justify-content:center;height:36px;padding:0 16px;font-size:14px;font-weight:600;border-radius:8px;white-space:nowrap}
.btn.primary{color:#111;background:linear-gradient(180deg,#ffb037,#ff9900);box-shadow:0 6px 20px rgba(255,153,0,.3);transition:transform .15s,box-shadow .15s}
.btn.primary:hover{transform:translateY(-1px);box-shadow:0 10px 26px rgba(255,153,0,.4)}
.burger{display:none;border:0;background:none;padding:4px;color:#0b1220;cursor:pointer}
.drawer{display:flex;flex-direction:column;padding:8px 24px 18px;border-top:1px solid #eceef2;background:#fff}
.drawer a{padding:12px 0;font-size:16px;color:#0b1220;border-bottom:1px solid #f1f2f5}
@media (max-width:960px){.links{display:none}.bar{justify-content:space-between}.burger{display:block}}
@media (min-width:961px){.drawer{display:none!important}}
@media (max-width:520px){.signin{display:none}.actions,.guest{gap:10px}}
main.wrap{padding-top:28px;padding-bottom:56px}
.crumbs{font-size:13.5px;color:#6b7280;margin-bottom:14px}
.crumbs a{color:#6b7280}
.post{max-width:760px;margin:0 auto}
.kicker{margin:0 0 6px;font-size:13px;font-weight:700;letter-spacing:.4px;text-transform:uppercase}
h1{font-size:38px;line-height:1.2;letter-spacing:-.6px;margin:0 0 12px;color:#0b1220}
.meta{color:#6b7280;font-size:14px;margin:0 0 14px}
.lead{font-size:19px;color:#374151;margin:0 0 22px}
.keynums{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:0 0 26px}
.keynums div{background:#fff7ea;border:1px solid #ffe2b3;border-radius:12px;padding:14px 16px}
.keynums b{display:block;font-size:26px;color:#0b1220;line-height:1.2}
.keynums span{font-size:13.5px;color:#6b7280}
.toc{background:#f7f8fb;border:1px solid #e6e9ef;border-radius:12px;padding:14px 20px;margin:0 0 28px}
.toc-title{font-weight:700;margin:0 0 6px}
.toc ol{margin:0;padding-left:20px;font-size:15.5px}
h2{font-size:27px;line-height:1.3;margin:42px 0 14px;color:#0b1220;scroll-margin-top:76px}
h3{font-size:19px;margin:24px 0 8px;color:#0b1220}
section{scroll-margin-top:76px}
p{margin:0 0 16px}
figure{margin:8px 0 22px}
figure img{border:1px solid #e6e9ef;border-radius:12px;display:block;width:100%}
figcaption{font-size:14px;color:#6b7280;margin-top:8px}
details{margin-top:6px;font-size:14px}
summary{cursor:pointer;color:#c2410c}
table{border-collapse:collapse;width:100%;margin-top:8px}
th,td{text-align:left;padding:6px 10px;border-bottom:1px solid #eef0f4}
th{background:#f7f8fb}
td:last-child,th:last-child{text-align:right}
.books{display:grid;gap:12px;margin:10px 0 20px}
.book{display:flex;gap:14px;border:1px solid #e6e9ef;border-radius:12px;padding:12px}
.book img{width:90px;height:135px;object-fit:cover;border-radius:4px;flex:none;background:#f3f5f8}
.book-main{min-width:0}
.bt{font-weight:700;margin:0 0 2px;line-height:1.35}
.ba{margin:0 0 6px;font-size:14.5px;color:#4b5563}
.bn{list-style:none;padding:0;margin:0 0 6px;display:flex;flex-wrap:wrap;gap:6px 16px;font-size:14px}
.bn span{color:#6b7280;margin-right:4px}
.bl{font-size:13.5px;margin:0}
.takeaways ul{padding-left:20px}
.takeaways li{margin-bottom:8px}
.method{font-size:15px;color:#4b5563}
.method h2{font-size:21px}
.cta-box{background:#0b1220;color:#e5e7eb;border-radius:14px;padding:22px 24px;margin:34px 0}
.cta-title{color:#fff;font-size:20px;font-weight:700;margin:0 0 6px}
.btn{display:inline-block;background:#ff9900;color:#111;font-weight:700;padding:9px 18px;border-radius:8px}
.btn:hover{text-decoration:none;background:#ffad33}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin:26px 0}
.tags a{background:#f3f5f8;border-radius:999px;padding:4px 12px;font-size:14px;color:#374151}
.cards{list-style:none;padding:0;margin:18px 0;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card a{display:flex;flex-direction:column;height:100%;border:1px solid #e6e9ef;border-radius:14px;overflow:hidden;color:inherit}
.card a:hover{text-decoration:none;border-color:#ffd08a;box-shadow:0 10px 30px rgba(13,22,39,.07)}
.card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:#f3f5f8}
.card-kind{font-size:12px;font-weight:700;color:#c2410c;text-transform:uppercase;letter-spacing:.4px;margin:12px 16px 0}
.card h2,.card h3{font-size:17.5px;line-height:1.4;margin:4px 16px 6px}
.card p{font-size:14.5px;color:#4b5563;margin:0 16px 8px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card time{font-size:13px;color:#9ca3af;margin:auto 16px 14px}
.list h1{font-size:34px}
.kinds{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 10px}
.kinds a{border:1px solid #e6e9ef;border-radius:999px;padding:5px 14px;font-size:14.5px;color:#374151}
.kinds a[aria-current]{background:#0b1220;border-color:#0b1220;color:#fff}
.count{color:#6b7280;font-size:14.5px;margin:4px 0 0}
.pager{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;align-items:center;margin:30px 0;font-size:15px}
.pager .num,.pager .step{min-width:38px;height:38px;padding:0 12px;display:inline-flex;align-items:center;justify-content:center;border:1px solid #e6e9ef;border-radius:10px;color:#374151}
.pager a:hover{text-decoration:none;border-color:#ff9900;color:#c2410c}
.pager .num[aria-current]{background:#0b1220;border-color:#0b1220;color:#fff;font-weight:700}
.pager .off{color:#c4c9d2}
.hubs{margin-top:40px;font-size:15px}
.hubs h2{font-size:22px}
.hubs h3{font-size:16px;margin-top:16px}
.empty{color:#6b7280}
.site-footer{background:#0b1220;color:#8a93a6;padding:56px 0 28px;font-size:14px;line-height:1.5}
.site-footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr;gap:32px}
.site-footer .logo{display:block;height:38px;width:auto}
.site-footer .about p{max-width:340px;line-height:1.8;margin:16px 0 0}
.site-footer .fh{color:#e6e9ef;font-size:14px;font-weight:700;margin:0 0 14px}
.site-footer a{display:block;color:#8a93a6;line-height:2.1}
.site-footer a:hover{color:#ff9900;text-decoration:none}
.site-footer .copy{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);font-size:12px}
@media (max-width:760px){.site-footer .cols{grid-template-columns:1fr 1fr}.site-footer .about{grid-column:1/-1}}
.explore{margin:30px 0}
.explore h2{font-size:21px;margin:0 0 12px}
.explore ul{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.explore a{display:block;border:1px solid #e6e9ef;border-radius:12px;padding:12px 16px;color:inherit;height:100%}
.explore a:hover{text-decoration:none;border-color:#ffd08a}
.explore b{display:block;color:#0b1220;font-size:15.5px}
.explore span{font-size:14px;color:#6b7280}
.byline{color:inherit;border-bottom:1px dotted #9ca3af}
.byline:hover{text-decoration:none;color:#c2410c}
.about-page{max-width:760px;margin:0 auto}
.about-page ul{padding-left:20px}
@media (max-width:860px){.cards{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){
  body{font-size:16.5px}
  h1{font-size:29px}
  h2{font-size:23px}
  .keynums{grid-template-columns:1fr 1fr 1fr;gap:8px}
  .keynums b{font-size:20px}
  .cards,.related .cards,.explore ul{grid-template-columns:1fr}
}