:root{--hdr:#22323f;--acc:#0c8599;--fg2:#0b7285;--chip:#eaf6f8;--tipbg:#fdf6e3;--line:#e2e7ed;--mute:#5a6673;--card:#fff;--bg:#f5f7f6;--fg:#18222c;--r:2px}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;font:16px/1.66 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--fg);background:var(--bg)}
img{max-width:100%;height:auto}a{color:var(--fg2)}h1,h2,h3{font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}h1{font-size:clamp(28px,4.4vw,38px);line-height:1.15;margin:.2em 0 .4em}h2{font-size:clamp(22px,3vw,26px);line-height:1.25;margin:1.7em 0 .5em;scroll-margin-top:76px}h3{font-size:19px;margin:1.2em 0 .3em}
.wus-wrap{max-width:1120px;margin:0 auto;padding:0 18px}
.wus-head{background:#fff;box-shadow:0 1px 0 var(--line);position:sticky;top:0;z-index:40}
.wus-head .wus-wrap{display:flex;align-items:center;gap:14px;min-height:62px;}
.wus-mark{display:flex;align-items:center;gap:10px;white-space:nowrap;color:var(--fg);text-decoration:none;font-weight:700;font-size:19px;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}.wus-mark svg{width:28px;height:28px;flex:none}.wus-bt-s{display:none}
.wus-nav{display:flex;gap:2px;margin-left:auto}.wus-nav a{color:var(--fg);text-decoration:none;padding:8px 10px;border-radius:var(--r);font-size:15px;white-space:nowrap}.wus-nav a:hover,.wus-nav a.on{background:var(--chip)}
.wus-nav a:nth-child(n+7):not(.wus-book){display:none}.wus-nav .wus-book,.wus-pop .wus-book{background:var(--acc);color:#fff;font-weight:700;margin-left:6px}.wus-book:hover{filter:brightness(.86)}
.wus-burger{display:none;margin-left:auto}.wus-burger summary{list-style:none;cursor:pointer;width:44px;height:44px;display:grid;place-items:center;border-radius:var(--r)}.wus-burger summary::-webkit-details-marker{display:none}.wus-burger summary i{display:block;width:24px;height:3px;background:var(--fg);border-radius:2px;margin:2.5px 0}
.wus-pop{position:absolute;left:0;right:0;top:100%;background:#fff;padding:10px 18px 16px;display:flex;flex-direction:column;gap:2px;z-index:50;box-shadow:0 8px 20px rgba(0,0,0,.15)}.wus-pop a{color:var(--fg);text-decoration:none;padding:12px 10px;border-radius:var(--r);font-size:17px}.wus-pop .wus-book{margin:8px 0 0;text-align:center}
main{padding:22px 0 40px}.wus-crumbs{font-size:14px;color:var(--mute);margin-bottom:6px}.wus-crumbs a{color:var(--mute)}.wus-crumbs a:hover{color:var(--acc)}
.wus-kicker{font-size:18px;color:#2a3540;border-left:4px solid var(--acc);padding-left:16px}.wus-meta{font-size:13px;color:var(--mute);margin:4px 0 12px;}
.wus-act{display:inline-block;background:var(--acc);color:#fff!important;text-decoration:none;font-weight:700;padding:11px 20px;border-radius:4px;text-align:center;transition:filter .15s,transform .15s,box-shadow .15s}.wus-act:hover{filter:brightness(.86);transform:translateY(-1px);box-shadow:0 4px 12px rgba(0,0,0,.18)}
.wus-grid{overflow-x:auto;margin:14px 0}table{border-collapse:collapse;width:100%;background:var(--card);font-size:15.5px}th,td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top}th{background:var(--chip)}.wus-note{font-size:14px;color:var(--mute)}
.wus-rank{display:grid;gap:14px;margin:16px 0}.wus-rk{background:var(--card);border:1px solid var(--line);border-radius:calc(var(--r) + 4px);padding:18px 20px;display:grid;grid-template-columns:54px 1fr auto;gap:8px 18px;align-items:start}.wus-rk:first-child{border:2px solid var(--acc)}
.wus-rk .n{width:46px;height:46px;border-radius:4px;background:var(--hdr);color:#fff;display:grid;place-items:center;font-weight:800;font-size:20px}.wus-rk h3{margin:0;font-size:21px}.wus-rk .bd{display:inline-block;background:var(--chip);color:var(--fg2);font-size:13px;font-weight:600;padding:2px 10px;border-radius:999px;margin-left:8px}
.wus-rk .sr{color:#e8a100;font-weight:700}.wus-rk .pr{font-weight:800;font-size:20px;white-space:nowrap;text-align:right}.wus-rk dl{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:6px 16px;margin:10px 0;font-size:15px}.wus-rk dt{color:var(--mute);font-size:13px}.wus-rk dd{margin:0;font-weight:600}.wus-rk ul{margin:6px 0;padding-left:20px;font-size:15.5px}.wus-rk .sd{display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.wus-seq{counter-reset:s;list-style:none;padding:0;display:grid;gap:10px}.wus-seq li{counter-increment:s;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px 14px 62px;position:relative}.wus-seq li:before{content:counter(s);position:absolute;left:16px;top:14px;width:32px;height:32px;border-radius:50%;background:var(--acc);color:#fff;display:grid;place-items:center;font-weight:700}.wus-seq b{display:block}
.wus-pages{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px;margin:14px 0}.wus-pages a{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;text-decoration:none;color:inherit;display:block;transition:border-color .15s,background .15s}.wus-pages a:hover{border-color:var(--acc);background:var(--chip)}.wus-pages b{display:block;color:var(--fg2);font-size:17px}.wus-pages span{font-size:14.5px;color:var(--mute)}
.wus-jump{display:flex;gap:4px;overflow-x:auto;white-space:nowrap;padding:10px 0;margin:6px 0 10px;border-bottom:1px solid var(--line);scrollbar-width:none;font-size:14px}.wus-jump::-webkit-scrollbar{display:none}.wus-jump span{color:var(--mute);padding:6px 8px 6px 0;font-weight:600}.wus-jump a{color:var(--fg2);text-decoration:none;padding:6px 10px;border-radius:4px;background:var(--chip);transition:filter .15s}main .wus-jump a:hover{background:var(--chip);color:var(--fg2);filter:brightness(.92)}
figure.wus-main-img{margin:0 0 18px}figure.wus-main-img img{width:100%;height:auto;max-height:440px;border-radius:calc(var(--r) + 2px);display:block;aspect-ratio:3/2;object-fit:cover}figure.wus-shot{margin:18px 0}figure.wus-shot img{width:100%;height:auto;max-height:460px;object-fit:cover;border-radius:var(--r);display:block}figure figcaption{font-size:13px;color:var(--mute);margin-top:6px}
main a:not(.wus-act){transition:color .15s}main a:not(.wus-act):hover{color:var(--acc)}.wus-photo{font-size:13px;color:var(--mute)}
a:focus-visible,summary:focus-visible{outline:2px solid var(--acc);outline-offset:2px;border-radius:6px}
.wus-glance{width:100%;margin:16px 0}.wus-glance th{width:42%;font-weight:600;color:var(--mute);background:var(--card)}.wus-glance td{font-weight:700}.wus-cta{background:var(--chip);border-radius:var(--r);padding:18px 20px;margin:22px 0;display:grid;grid-template-columns:1fr auto;gap:12px 18px;align-items:center}.wus-cta h3{margin:0 0 4px}.wus-cta p{margin:0}.wus-qs dt{font-weight:700;margin-top:14px}.wus-qs dd{margin:4px 0 0;padding-left:14px;border-left:3px solid var(--chip)}footer{background:#1d2731;color:#c9d2db;padding:26px 0;font-size:14.5px}footer a{color:#fff}footer a:hover{opacity:.8}.wus-fl{columns:2 220px;margin:0 0 12px}.wus-fl a{display:block;padding:2px 0}
@media (max-width:1000px){.wus-nav{display:none}.wus-burger{display:block}.wus-head .wus-wrap{position:relative;flex-wrap:nowrap;justify-content:flex-start;padding-top:0}.wus-bt-f{display:none}.wus-bt-s{display:inline}}
@media (max-width:760px){body{font-size:16px}.wus-rk{grid-template-columns:44px 1fr}.wus-rk .sd{grid-column:1/-1;align-items:stretch}.wus-rk .pr{text-align:left}.wus-act{display:block}.wus-cta{display:block}.wus-cta .wus-act{width:100%;margin-top:12px}figure.wus-main-img img{max-height:260px}figure.wus-shot img{max-height:300px}.wus-jump a{padding:10px 12px}
table.wus-data thead{display:none}table.wus-data tr{display:block;border:1px solid var(--line);border-radius:var(--r);margin:0 0 10px;overflow:hidden}table.wus-data td{display:flex;justify-content:space-between;gap:14px;border:0;border-bottom:1px solid var(--line);text-align:right}table.wus-data td:before{content:attr(data-label);font-weight:600;color:var(--mute);text-align:left}table.wus-data td:last-child{border-bottom:0}}