*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:"PingFang SC","Microsoft YaHei",sans-serif;background:#f1f5f9;color:#1e293b;line-height:1.7;font-size:15px}
a{color:#2563eb;text-decoration:none}
a:hover{color:#1d4ed8}
.yh-header{background:linear-gradient(135deg,#1e3a5f 0%,#0f2744 100%);color:#fff;padding:0;box-shadow:0 4px 20px rgba(15,39,68,.3)}
.yh-header-inner{max-width:1100px;margin:0 auto;padding:16px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.yh-logo{font-size:1.25rem;font-weight:700;color:#fff;white-space:nowrap}
.yh-logo:hover{color:#fbbf24;text-decoration:none}
.yh-search-bar{display:flex;flex:1;max-width:420px}
.yh-input{flex:1;border:none;border-radius:8px 0 0 8px;padding:10px 14px;font-size:14px;outline:none}
.yh-btn{border:none;background:#f59e0b;color:#1e293b;font-weight:600;padding:10px 22px;border-radius:0 8px 8px 0;cursor:pointer}
.yh-btn:hover{background:#fbbf24}
.yh-page{max-width:1100px;margin:0 auto;padding:0 20px 40px}
.yh-hero{background:linear-gradient(135deg,#1e40af,#1e3a5f);color:#fff;border-radius:0 0 16px 16px;padding:32px 28px;margin:0 -20px 24px}
.yh-hero h1{font-size:1.6rem;margin-bottom:8px}
.yh-hero p{opacity:.85;font-size:15px}
.yh-hero-char{display:flex;align-items:center;gap:24px}
.yh-char-ring{width:88px;height:88px;border-radius:50%;background:rgba(255,255,255,.15);border:3px solid #f59e0b;display:flex;align-items:center;justify-content:center;font-size:2.8rem;font-weight:700;flex-shrink:0}
.yh-grid{display:grid;grid-template-columns:1fr 280px;gap:20px;align-items:start}
.yh-main{min-width:0}
.yh-aside{display:flex;flex-direction:column;gap:16px}
.yh-card{background:#fff;border-radius:12px;padding:20px;box-shadow:0 1px 6px rgba(30,58,95,.08);border:1px solid #e2e8f0;margin-bottom:16px}
.yh-card-sm{padding:16px}
.yh-card-sm h3{font-size:14px;color:#1e3a5f;margin-bottom:10px;padding-bottom:8px;border-bottom:2px solid #f59e0b}
.yh-card-sm p{font-size:13px;color:#64748b}
.yh-card-title{font-size:1rem;color:#1e3a5f;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.yh-card-title::before{content:"";width:4px;height:18px;background:#f59e0b;border-radius:2px}
.yh-card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
@media(min-width:600px){.yh-card-grid{grid-template-columns:repeat(3,1fr)}}
.yh-card-grid-sm{grid-template-columns:repeat(3,1fr)}
.yh-word-card{display:flex;flex-direction:column;padding:14px;background:#f8fafc;border:1px solid #e2e8f0;border-radius:10px;transition:.15s}
.yh-word-card:hover{background:#eff6ff;border-color:#93c5fd;transform:translateY(-2px);box-shadow:0 4px 12px rgba(37,99,235,.12);text-decoration:none}
.yh-word-title{font-weight:600;color:#1e293b;font-size:15px}
.yh-word-py{font-size:12px;color:#64748b;margin-top:4px}
.yh-word-hero{position:relative;overflow:hidden}
.yh-word-badge{position:absolute;top:16px;right:16px;background:#f59e0b;color:#1e293b;font-size:12px;font-weight:700;padding:4px 10px;border-radius:20px}
.yh-word-hero h1{font-size:1.75rem;color:#1e3a5f;margin-bottom:6px}
.yh-word-meta{font-size:14px;color:#64748b}
.yh-split{display:grid;grid-template-columns:260px 1fr;gap:16px;margin-bottom:16px}
.yh-card-grow{flex:1}
.yh-kv{list-style:none}
.yh-kv li{display:flex;flex-direction:column;padding:10px 0;border-bottom:1px solid #f1f5f9;font-size:14px}
.yh-kv li span{color:#94a3b8;font-size:12px;margin-bottom:2px}
.yh-kv li b{color:#1e293b;font-weight:600}
.yh-text{text-indent:2em;margin-bottom:12px;color:#334155}
.yh-sub{font-size:14px;color:#1e3a5f;margin:14px 0 6px}
.yh-rich p{text-indent:2em;margin-bottom:.5em}
.yh-pills{display:flex;flex-wrap:wrap;gap:8px}
.yh-pills a{display:inline-block;padding:6px 16px;background:#eff6ff;border:1px solid #bfdbfe;border-radius:20px;font-weight:600;color:#1d4ed8}
.yh-pills a:hover{background:#dbeafe;text-decoration:none}
.yh-hot-list{list-style:none}
.yh-hot-list li{border-bottom:1px solid #f1f5f9}
.yh-hot-list a{display:flex;flex-direction:column;padding:10px 0;font-size:13px}
.yh-hot-list a:hover{text-decoration:none}
.yh-hot-list strong{color:#1e3a5f}
.yh-hot-list span{color:#94a3b8;font-size:12px;margin-top:2px}
.yh-friends{margin-top:24px;padding:16px 0;border-top:1px solid #e2e8f0;font-size:13px;color:#64748b;display:flex;flex-wrap:wrap;align-items:center;gap:8px 20px}
.yh-friends-label{font-weight:600;color:#1e3a5f}
.yh-footer{background:#1e293b;color:#94a3b8;margin-top:20px}
.yh-footer-inner{max-width:1100px;margin:0 auto;padding:20px;text-align:center;font-size:13px}
.yh-footer a{color:#fbbf24}
@media(max-width:860px){
.yh-grid{grid-template-columns:1fr}
.yh-split{grid-template-columns:1fr}
.yh-aside{order:-1}
}