:root{--green:#315c4f;--green2:#477466;--ink:#28332f;--gold:#b28a52;--rose:#a36c73;--ivory:#fbf8f2;--mist:#eef3f0;--line:#d8d2c8;--gray:#6f7773;--white:#fff}*{box-sizing:border-box}body{margin:0;color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",sans-serif;background:var(--ivory);letter-spacing:0}.topbar{height:68px;padding:0 max(24px,5vw);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgba(251,248,242,.96);position:sticky;top:0;z-index:5}.brand{display:flex;align-items:baseline;gap:12px;color:var(--green);font-weight:700;font-size:20px}.brand small{font-size:9px;color:var(--gold)}.top-meta{display:flex;gap:18px;font-size:12px;color:var(--gray)}main{width:min(1080px,calc(100% - 40px));margin:0 auto}.setup{padding:64px 0}.intro{max-width:660px}.eyebrow{color:var(--gold);font-size:11px;font-weight:700;margin:0 0 10px}.intro h1{font-size:52px;line-height:1.08;margin:0 0 16px;color:var(--green)}.intro p:last-child{font-size:16px;color:var(--gray);line-height:1.8}.controls{margin:44px 0 28px;display:grid;grid-template-columns:1.4fr 1fr auto auto;gap:12px;align-items:end;padding:22px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}label{display:grid;gap:8px;font-size:12px;color:var(--gray)}select,button{font:inherit}select{height:44px;border:1px solid var(--line);background:var(--white);padding:0 12px;color:var(--ink)}button{height:44px;border:0;padding:0 22px;cursor:pointer;font-weight:700}.primary{background:var(--green);color:var(--white)}.primary:hover{background:var(--green2)}.secondary{background:transparent;color:var(--green);border:1px solid var(--green)}.toggle{height:44px;display:flex;align-items:center;gap:8px;padding:0 10px;color:var(--ink)}.toggle input{accent-color:var(--green);width:18px;height:18px}.category-grid{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.category-item{padding:18px 14px;background:var(--white);border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.category-item strong{display:block;color:var(--green);font-size:14px;margin-bottom:6px}.category-item span{font-size:11px;color:var(--gray)}.notice{margin-top:22px;font-size:11px;color:var(--gray)}.hidden{display:none!important}.quiz{padding:28px 0 64px}.quiz-head{display:flex;gap:24px;align-items:center}.icon{width:44px;padding:0;border:1px solid var(--line);background:transparent;font-size:24px;color:var(--gray)}.progress-wrap{flex:1}.progress-meta{display:flex;justify-content:space-between;font-size:12px;color:var(--gray);margin-bottom:8px}.track{height:4px;background:#e5e2db}.track div{height:100%;width:0;background:var(--gold);transition:width .25s}.question-panel{margin-top:48px;min-height:430px}.question-panel h2{font-size:28px;line-height:1.5;max-width:800px;margin:0 0 28px;color:var(--green)}.choices{display:grid;gap:10px;max-width:820px}.choice{display:flex;gap:14px;align-items:flex-start;text-align:left;height:auto;min-height:54px;padding:15px 18px;background:var(--white);border:1px solid var(--line);color:var(--ink);font-weight:400;line-height:1.6}.choice b{color:var(--gold);min-width:20px}.choice.selected{border-color:var(--green);background:var(--mist);box-shadow:inset 4px 0 var(--green)}.quiz-nav{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:20px}.result{padding:60px 0}.score{display:flex;align-items:baseline;color:var(--green)}.score strong{font-size:86px;line-height:1}.score span{font-size:20px;margin-left:8px}.result h2{font-size:28px;margin:18px 0 8px}.result>p{color:var(--gray)}.result-actions{display:flex;gap:12px;margin:28px 0 40px}.review{display:grid;gap:16px}.review-item{padding:20px;background:var(--white);border-left:4px solid var(--rose)}.review-item.correct{border-color:var(--green)}.review-item h3{font-size:16px;line-height:1.5;margin:0 0 10px}.review-item p{font-size:13px;line-height:1.7;margin:4px 0;color:var(--gray)}.review-item .answer{color:var(--green);font-weight:700}@media(max-width:760px){main{width:min(100% - 28px,1080px)}.top-meta span:last-child{display:none}.setup{padding:40px 0}.intro h1{font-size:42px}.controls{grid-template-columns:1fr 1fr}.controls .primary{grid-column:1/-1}.category-grid{grid-template-columns:repeat(2,1fr)}.question-panel{margin-top:34px;min-height:480px}.question-panel h2{font-size:22px}.quiz-nav button{width:48%}}@media(max-width:430px){.controls{grid-template-columns:1fr}.controls .primary{grid-column:auto}.category-grid{grid-template-columns:1fr}.topbar{padding:0 16px}.brand small{display:none}}