/**
 * NCEA 练习题库（[zxx_ncea_practice]）样式
 * 作用域：#zxx-ncea-app
 */
#zxx-ncea-app{background:#f4f7fb;color:#111827;line-height:1.65;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  padding:20px 0 32px;margin:0}
#zxx-ncea-app *,#zxx-ncea-app *::before,#zxx-ncea-app *::after{box-sizing:border-box}
#zxx-ncea-app p{margin:0 0 8px}
#zxx-ncea-app .znp-wrap{max-width:1060px;margin:0 auto;padding:0 18px}
#zxx-ncea-app .znp-loading{max-width:1060px;margin:0 auto;padding:40px 18px;color:#6b7280}
#zxx-ncea-app .hidden{display:none!important}
#zxx-ncea-app .znp-intro{background:#fff;border-radius:16px;padding:26px;box-shadow:0 8px 30px rgba(15,35,70,.08)}
#zxx-ncea-app .znp-intro h2{margin:0 0 8px;font-size:22px;color:#111827}
#zxx-ncea-app .znp-intro p{color:#4b5563;font-size:14px}
#zxx-ncea-app .znp-badge{display:inline-block;background:#e8f0fe;color:#1557a0;border-radius:999px;padding:3px 10px;font-size:12px;font-weight:600;margin-right:6px}
#zxx-ncea-app .znp-notice{margin-top:14px;padding:12px 14px;background:#fff7e6;border:1px solid #f5d08a;border-radius:10px;font-size:13px;color:#7a4b00}
#zxx-ncea-app .znp-muted{color:#6b7280;font-size:13px;margin:6px 0 10px}
#zxx-ncea-app .znp-standard-title{font-size:16px;font-weight:700;color:#1557a0;margin:8px 0 4px}
#zxx-ncea-app .znp-standard-picker{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0}
#zxx-ncea-app .znp-standard-btn{border:1px solid #d7e0eb;background:#fff;color:#374151;border-radius:999px;padding:5px 12px;font-size:12px;cursor:pointer;font-family:inherit}
#zxx-ncea-app .znp-standard-btn.active{background:#1f6feb;border-color:#1f6feb;color:#fff;font-weight:700}
#zxx-ncea-app .znp-standard-btn:disabled{opacity:.45;cursor:not-allowed}
#zxx-ncea-app .znp-btn{appearance:none;border:1px solid #cfd8e3;background:#fff;color:#1f2937;border-radius:10px;padding:9px 16px;font-size:14px;cursor:pointer;font-family:inherit}
#zxx-ncea-app .znp-btn:hover{border-color:#1f6feb;color:#1557a0}
#zxx-ncea-app .znp-btn.primary{background:#1f6feb;border-color:#1f6feb;color:#fff}
#zxx-ncea-app .znp-btn.primary:hover{background:#1557a0}
#zxx-ncea-app .znp-btn:disabled{opacity:.5;cursor:not-allowed}
#zxx-ncea-app .znp-btn.small{padding:6px 12px;font-size:13px}
#zxx-ncea-app .znp-topbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;margin-bottom:14px}
#zxx-ncea-app .znp-progress{flex:1;min-width:200px}
#zxx-ncea-app .znp-bar{height:8px;background:#dbe5f1;border-radius:999px;overflow:hidden}
#zxx-ncea-app .znp-bar > i{display:block;height:100%;width:0;background:linear-gradient(90deg,#1f6feb,#3aa0ff);transition:width .25s}
#zxx-ncea-app .znp-progress small{display:block;color:#6b7280;margin-top:5px;font-size:12px}
#zxx-ncea-app .znp-layout{display:grid;grid-template-columns:200px minmax(0,1fr);gap:16px;align-items:start}
#zxx-ncea-app .znp-nav{background:#fff;border-radius:14px;padding:12px;box-shadow:0 4px 18px rgba(15,35,70,.06);position:sticky;top:80px}
#zxx-ncea-app .znp-nav h3{margin:0 0 8px;font-size:13px;color:#6b7280;font-weight:600}
#zxx-ncea-app .znp-nav-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}
#zxx-ncea-app .znp-nav-grid button{border:1px solid #d7e0eb;background:#fff;border-radius:8px;height:34px;font-size:13px;cursor:pointer;color:#374151;font-family:inherit}
#zxx-ncea-app .znp-nav-grid button.current{border-color:#1f6feb;background:#e8f0fe;color:#1557a0;font-weight:700}
#zxx-ncea-app .znp-nav-grid button.done{background:#e9f7ee;border-color:#b7e2c6;color:#0f7b3f}
#zxx-ncea-app .znp-nav-grid button.wrong{background:#fdecea;border-color:#f3b6b0;color:#b42318}
#zxx-ncea-app .znp-card{background:#fff;border-radius:16px;padding:22px;box-shadow:0 8px 30px rgba(15,35,70,.08);min-height:380px}
#zxx-ncea-app .znp-qmeta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:10px;color:#6b7280;font-size:12px}
#zxx-ncea-app .znp-qmeta .pill{background:#f1f5f9;border-radius:999px;padding:2px 9px}
#zxx-ncea-app .znp-qmeta .pill.hard{background:#fff1e6;color:#9a4b00}
#zxx-ncea-app .znp-stem{font-size:17px;font-weight:600;margin:6px 0 16px;color:#111827}
#zxx-ncea-app .znp-part{border-top:1px solid #edf1f6;padding:13px 0}
#zxx-ncea-app .znp-part:first-of-type{border-top:0}
#zxx-ncea-app .znp-plabel{font-weight:700;color:#1557a0;margin-right:6px}
#zxx-ncea-app .znp-prompt{margin:0 0 8px}
#zxx-ncea-app .znp-answer-row{display:flex;flex-wrap:wrap;gap:8px}
#zxx-ncea-app .znp-answer-row input{flex:1;min-width:200px;padding:10px 12px;border:1px solid #cfd8e3;border-radius:10px;font-size:15px;font-family:inherit}
#zxx-ncea-app .znp-answer-row input:focus{outline:2px solid #bcd4ff;border-color:#1f6feb}
#zxx-ncea-app .znp-result{margin-top:8px;font-size:14px}
#zxx-ncea-app .znp-result.ok{color:#0f7b3f}
#zxx-ncea-app .znp-result.bad{color:#b42318}
#zxx-ncea-app .znp-result.part{color:#9a4b00}
#zxx-ncea-app .znp-result .marks{font-weight:700}
#zxx-ncea-app .znp-evidence{color:#6b7280;font-size:12px;margin-top:4px}
#zxx-ncea-app .znp-timer{font-weight:800;font-size:16px;color:#b42318;min-width:48px;text-align:center}
#zxx-ncea-app .znp-review{border:1px solid #edf1f6;border-radius:10px;padding:10px 14px;margin-bottom:10px;background:#fff}
#zxx-ncea-app .znp-review summary{cursor:pointer;font-weight:700;font-size:14px;color:#1f2937}
#zxx-ncea-app .znp-review code{background:#f1f5f9;border-radius:6px;padding:1px 6px}
#zxx-ncea-app .znp-feedback{color:#6b7280;font-size:13px;margin-top:2px}
#zxx-ncea-app .znp-hints{margin-top:16px;padding:14px;background:#f8fafc;border:1px solid #e5eaf1;border-radius:12px}
#zxx-ncea-app .znp-hints h3{margin:0 0 8px;font-size:14px;color:#374151}
#zxx-ncea-app .znp-hint-btns{display:flex;flex-wrap:wrap;gap:8px}
#zxx-ncea-app .znp-hint{display:none;margin-top:10px;padding:12px;background:#fff7e6;border-left:4px solid #f0a500;border-radius:8px;font-size:14px}
#zxx-ncea-app .znp-hint.show{display:block}
#zxx-ncea-app .znp-explain{display:none;margin-top:12px;padding:14px;background:#f0f7ff;border-left:4px solid #1f6feb;border-radius:8px;font-size:14px}
#zxx-ncea-app .znp-explain.show{display:block}
#zxx-ncea-app .znp-explain h4{margin:0 0 6px;font-size:14px;color:#1557a0}
#zxx-ncea-app .znp-explain ul{margin:6px 0 0 18px;padding:0}
#zxx-ncea-app .znp-actions{display:flex;justify-content:space-between;gap:10px;margin-top:20px}
#zxx-ncea-app .znp-summary{background:#fff;border-radius:16px;padding:24px;box-shadow:0 8px 30px rgba(15,35,70,.08)}
#zxx-ncea-app .znp-score{font-size:32px;font-weight:800;color:#1557a0;margin:6px 0}
#zxx-ncea-app .znp-summary table{width:100%;border-collapse:collapse;margin-top:12px;font-size:14px}
#zxx-ncea-app .znp-summary th,#zxx-ncea-app .znp-summary td{text-align:left;padding:8px;border-bottom:1px solid #edf1f6}
#zxx-ncea-app .znp-summary th{color:#6b7280;font-weight:600;font-size:13px}
#zxx-ncea-app .znp-tag-ok{color:#0f7b3f;font-weight:600}
#zxx-ncea-app .znp-tag-bad{color:#b42318;font-weight:600}
#zxx-ncea-app .znp-tag-muted{color:#9ca3af;font-weight:600}
#zxx-ncea-app .znp-proto{margin-top:12px;font-size:12px;color:#9ca3af}
@media (max-width:760px){
  #zxx-ncea-app .znp-layout{grid-template-columns:1fr}
  #zxx-ncea-app .znp-nav{position:static;order:2}
  #zxx-ncea-app .znp-card{order:1;padding:18px}
  #zxx-ncea-app .znp-nav-grid{grid-template-columns:repeat(5,1fr)}
  #zxx-ncea-app .znp-nav-grid button{height:30px;font-size:12px}
  #zxx-ncea-app .znp-intro{padding:20px}
  #zxx-ncea-app .znp-stem{font-size:16px}
}