.knowledge-toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 0;border-block:1px solid var(--line);color:var(--muted)}.knowledge-toolbar>div{font-size:12px;font-weight:600;letter-spacing:.04em;text-transform:uppercase}.knowledge-toolbar>div span{color:var(--green);font-size:18px}.knowledge-toolbar input{width:min(360px,42vw);padding:11px 15px;border:1.5px solid var(--line);border-radius:999px;outline:0;background:#fff}.knowledge-toolbar input:focus{border-color:var(--ink)}.knowledge-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;padding:26px 0 60px}.knowledge-card{position:relative;min-height:200px;padding:20px;border:1px solid var(--line);border-radius:16px;background:var(--card);transition:transform .12s,box-shadow .12s}.knowledge-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.knowledge-card h2{margin:14px 0 10px;font:700 18px/1.15 var(--display);letter-spacing:-.01em}.knowledge-card>p:last-of-type{color:var(--muted);font-size:14px;line-height:1.5}.knowledge-chinese{margin:0 0 12px;font:700 22px/1.3 var(--hz)}.knowledge-chinese small{display:block;margin-top:4px;color:var(--tone1);font:500 12.5px/1.3 var(--body)}.review-badge{position:absolute;right:18px;bottom:16px;color:#9a6a13;font-size:9px;font-weight:700;letter-spacing:.08em}.empty-state{padding:60px 0 100px;color:var(--muted);font-size:18px}.knowledge-page{max-width:880px;padding-top:28px;padding-bottom:80px}.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:13px}.breadcrumbs a:hover{color:var(--ink)}.review-banner{margin:18px 0;padding:12px 15px;border:1px solid #e8c77f;border-radius:12px;color:#78510b;background:#fff4da;font-size:13px}.knowledge-hero{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:end;padding:36px 0 34px}.knowledge-hero h1{max-width:560px;margin:12px 0 14px;font:700 clamp(30px,4vw,46px)/1.08 var(--display);letter-spacing:-.02em}.verdict{max-width:560px;margin:0;color:var(--muted);font-size:16px;line-height:1.55}.answer-card{padding:24px 26px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(160deg,#fff,#f6faf7);box-shadow:var(--shadow)}.answer-card>p:last-child{margin:14px 0 0;color:var(--muted);font-size:15px;line-height:1.5}.answer-chinese{margin:0;font:700 clamp(34px,4.5vw,50px)/1.15 var(--hz)}.answer-pinyin,.pinyin{color:var(--tone1)!important}.answer-pinyin{margin:6px 0 0;font-size:15px}.meaning-strip{display:grid;grid-template-columns:1fr 1fr;margin:18px 0;border:1px solid var(--line-soft);border-radius:14px;overflow:hidden}.meaning-strip>div{padding:18px 20px;background:#fcfbf8}.meaning-strip>div+div{border-left:1px solid var(--line-soft)}.meaning-strip span{font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase}.meaning-strip>div:first-child span{color:var(--bad)}.meaning-strip>div:first-child p{color:#8b877f}.meaning-strip>div+div span{color:var(--ok)}.meaning-strip p{margin:8px 0 0;font-size:16px;line-height:1.5}.article-section{padding:38px 0;border-bottom:1px solid var(--line-soft)}.article-section>.section-kicker{margin-top:0;display:block;margin-bottom:0}.context-list{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 22px}.context-list span{padding:8px 12px;border:1px solid var(--line);border-radius:999px;color:#4d4943;background:#fff;font-size:13px}.prose{max-width:680px;color:#45423d;font-size:16px;line-height:1.7}.prose p{margin:1em 0}.example-list{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px}.example-list article{padding:20px;border:1px solid var(--line);border-radius:14px;background:var(--card)}.example-list blockquote{margin:0;font:700 21px/1.4 var(--hz)}.example-list p{color:var(--muted);font-size:14px;margin:8px 0 0}.example-list small,.alternative-list small{display:block;color:#908b82;font-size:12.5px;line-height:1.45;margin-top:4px}.alternative-list{margin-top:18px;border-top:1px solid var(--line-soft)}.alternative-list article{display:grid;grid-template-columns:.6fr 1.4fr;gap:28px;padding:18px 0;border-bottom:1px solid var(--line-soft)}.alternative-list h2{margin:0;font:700 24px/1.2 var(--hz)}.alternative-list p{margin:4px 0 6px;color:var(--muted);font-size:14px}.watch-out{display:grid;grid-template-columns:120px 1fr;gap:20px;margin:40px 0 28px;padding:18px 22px;border-left:3px solid var(--warn);border-radius:0 12px 12px 0;background:#fcf8f2}.watch-out span{color:var(--warn);font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase}.watch-out p{margin:0;color:#6b4a14;font-size:14.5px;line-height:1.6}.editorial-meta{display:flex;flex-wrap:wrap;gap:8px 22px;color:#98938a;font-size:11.5px;text-transform:uppercase;letter-spacing:.05em}.related-section{padding:34px 0}.related-section>div{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:18px}.related-section a{display:grid;grid-template-columns:60px 1fr auto;align-items:center;gap:14px;padding:16px;border:1px solid var(--line);border-radius:14px;background:var(--card);transition:border-color .12s,transform .12s}.related-section a:hover{border-color:var(--ink);transform:translateY(-1px)}.related-section a>span{font:700 22px/1.2 var(--hz)}.related-section strong{font-size:14px;font-family:var(--display);font-weight:500}.related-section small{color:var(--green);font-size:10px;font-weight:600;letter-spacing:.06em;text-transform:uppercase}@media(max-width:1000px){.knowledge-grid{grid-template-columns:1fr 1fr}.knowledge-hero{grid-template-columns:1fr;gap:24px}.answer-card{max-width:520px}.version-grid{grid-template-columns:1fr}}@media(max-width:760px){.knowledge-toolbar{align-items:stretch;flex-direction:column}.knowledge-toolbar input{width:100%}.knowledge-grid{grid-template-columns:1fr;padding-bottom:60px}.knowledge-page{padding-top:18px}.knowledge-hero{padding:26px 0 28px}.meaning-strip{grid-template-columns:1fr}.meaning-strip>div+div{border-top:1px solid var(--line-soft);border-left:0}.article-section{padding:30px 0}.example-list{grid-template-columns:1fr}.alternative-list article{grid-template-columns:1fr;gap:6px}.watch-out{grid-template-columns:1fr;gap:8px;margin-top:32px}.related-section>div{grid-template-columns:1fr}.related-section a{grid-template-columns:56px 1fr auto}.editorial-meta{flex-direction:column}}