/* Practice workspace · white paper, pine green, quiet hierarchy. */
#viewPractice{--pz-green:#28554a;--pz-ink:#252a28;--pz-muted:#626b66;--pz-line:#dee4df;--pz-soft:#edf2ec;color:var(--pz-ink)}
#practiceBox{min-width:0}
#viewPractice .practice-tabs{width:100%;gap:28px;border-radius:0;border-bottom:1px solid var(--pz-line);background:transparent;padding:0;margin:0 0 30px;overflow-x:auto}
#viewPractice .practice-tab{padding:12px 0 14px;border-radius:0;border-bottom:2px solid transparent;background:transparent;box-shadow:none;color:var(--pz-muted);font-size:14px;font-weight:500}
#viewPractice .practice-tab.active{background:transparent;color:var(--pz-green);border-color:var(--pz-green);box-shadow:none;font-weight:650}
#practiceBox button,#practiceBox select{font:inherit}
#practiceBox button{cursor:pointer}
#practiceBox button:disabled{cursor:default;opacity:.5}
#practiceBox button:focus-visible,#practiceBox select:focus-visible{outline:2px solid #729381;outline-offset:4px}
.pz-heading{display:flex;justify-content:space-between;align-items:center;gap:24px;margin:0 0 28px}
.pz-eyebrow{display:block;color:#77867d;font-size:11px;letter-spacing:.1em;line-height:1.8}
.pz-heading h2{margin:9px 0 10px;color:#284638;font-size:clamp(22px,2.3vw,30px);font-weight:600;line-height:1.4;letter-spacing:-.03em}
.pz-heading p,.pz-panel>p{margin:0;color:var(--pz-muted);font-size:13px;line-height:1.9}
.pz-heading-mark{display:grid;place-items:center;flex-shrink:0;width:68px;height:68px;border:1px solid #d9e2d9;border-radius:20px;color:#91a68f;font-family:serif;font-size:36px;transform:rotate(-7deg)}
.pz-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));padding:23px 0;background:#fff;border:1px solid #e8ece6;border-radius:14px;margin-bottom:26px}
.pz-metric{padding:0 28px;border-right:1px solid #e8ece6}
.pz-metric:last-child{border:0}
.pz-metric>span{display:block;color:var(--pz-muted);font-size:12px;margin-bottom:10px}
.pz-metric strong{font-size:30px;font-weight:500;color:#28554a;font-variant-numeric:tabular-nums;line-height:1.2}
.pz-metric small{margin-left:5px;color:#8b968d;font-size:12px;font-weight:400}
.pz-home-columns{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:24px;align-items:start}
.pz-home-columns>*,.pz-training-layout>*,.pz-setup-layout>*{min-width:0}
.pz-quick{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:30px 32px;background:#e8efe7;border:1px solid #dce6da;border-radius:16px;margin-bottom:28px}
.pz-quick h3{margin:7px 0 10px;color:#285044;font-size:25px;font-weight:600}
.pz-quick p{color:#637668;font-size:13px;line-height:1.9;margin:0 0 21px;max-width:350px}
.pz-quick-number{font-size:88px;letter-spacing:-.09em;line-height:1;font-weight:400;color:#b9cbb7;text-align:center;padding-right:7px}
.pz-quick-number span{display:block;color:#7b947b;font-size:10px;letter-spacing:.04em;margin-top:13px;white-space:nowrap}
.pz-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:39px;padding:9px 17px;border:1px solid var(--pz-line);border-radius:8px;background:#fff;color:var(--pz-green);font-size:13px!important;font-weight:500!important;text-decoration:none;line-height:1.4;transition:background .15s,border-color .15s}
.pz-btn:hover:not(:disabled){background:#edf2ec;border-color:#a1b6a6}
.pz-btn-primary{background:var(--pz-green);border-color:var(--pz-green);color:#fff}
.pz-btn-primary:hover:not(:disabled){background:#21463d;border-color:#21463d}
.pz-btn-text{background:transparent;border-color:transparent;padding:5px 0;min-height:32px}
.pz-btn-text:hover:not(:disabled){background:transparent;border-color:transparent;text-decoration:underline;text-underline-offset:4px}
.pz-section-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px}
.pz-section-heading h3{margin:0;font-size:16px;font-weight:600}
.pz-section-heading>span{font-size:11px;color:#879187}
.pz-subject-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.pz-subject-card{text-align:left;background:#fff;border:1px solid #e1e7df;border-radius:13px;padding:23px 24px;color:var(--pz-ink);transition:border-color .15s,box-shadow .15s}
.pz-subject-card:hover{border-color:#a7bda9;box-shadow:0 5px 20px #28554a08}
.pz-subject-index{display:inline-block;color:#a1ad9f;font-size:12px;font-variant-numeric:tabular-nums}
.pz-subject-card h4{font-size:18px;font-weight:550;margin:14px 0 10px}
.pz-subject-card p{font-size:12px;line-height:1.8;color:#687b6a;margin:0 0 23px}
.pz-subject-card p span{color:#89968a}
.pz-subject-link{display:flex;justify-content:space-between;color:#52765b;font-size:12px}
.pz-subject-link b{font-size:18px;font-weight:400}
.pz-home-aside{display:grid;gap:18px}
.pz-panel{background:#fff;border:1px solid #e1e7df;border-radius:14px;padding:24px}
.pz-panel h3{margin:0 0 16px;font-size:15px;line-height:1.7;font-weight:600}
.pz-panel>.pz-eyebrow{margin-bottom:12px}
.pz-panel>p+.pz-btn{margin-top:16px}
.pz-pathways button{display:block;width:100%;border:0;border-bottom:1px solid #edf0eb;background:transparent;padding:17px 0;text-align:left;color:var(--pz-ink)}
.pz-pathways button:last-child{border:0;padding-bottom:0}
.pz-pathways button:first-of-type{padding-top:2px}
.pz-pathways b{display:flex;justify-content:space-between;font-size:13px;font-weight:500}
.pz-pathways b span{color:#6d8771}
.pz-pathways small{display:block;color:#90998f;font-size:11px;margin-top:7px;line-height:1.6}
.pz-pathways button:hover b{color:var(--pz-green)}
.pz-notice{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 16px;background:#f0f2e9;border-radius:9px;margin-bottom:22px;color:#68735d;font-size:12px;line-height:1.8}
.pz-alert{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;border:1px solid #ecd6cc;border-radius:9px;padding:13px 16px;color:#9c4d35;background:#fff7f1;font-size:13px;line-height:1.8;margin:16px 0}
.pz-empty{text-align:center;padding:65px 20px;border:1px dashed #d7dfd3;border-radius:14px;background:#ffffff8c}
.pz-empty-symbol{color:#a2b29c;font-size:35px}
.pz-empty h3{font-size:18px;font-weight:500;color:#465d46;margin:12px 0}
.pz-empty p{color:#889182;font-size:13px;line-height:1.9;margin:0 0 20px}
.pz-session-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin:0 0 16px;color:#7c897f;font-size:12px}
.pz-session-heading>span:first-of-type{color:#3a5143;font-size:14px}
.pz-progress-track{height:4px;background:#e6ece2;border-radius:9px;overflow:hidden}
.pz-progress-track>div{height:100%;background:#6d9273;border-radius:9px;transition:width .25s}
.pz-training-layout{display:grid;grid-template-columns:minmax(0,1fr) 235px;gap:22px;margin-top:24px;align-items:start}
.pz-question{background:#fff;border:1px solid #e1e7df;border-radius:16px;padding:30px 34px;min-width:0}
.pz-meta{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:12px;line-height:1.7;color:#869080;margin-bottom:24px}
.pz-meta i{font-style:normal;font-size:11px;background:#f0f3ed;padding:3px 7px;border-radius:4px;margin-left:8px;color:#71806b}
.pz-question-title{font-size:19px;font-weight:500;line-height:1.9;margin:0 0 30px;white-space:pre-wrap;overflow-wrap:anywhere}
.pz-options{display:grid;gap:12px;margin-bottom:28px}
.pz-option{display:flex;align-items:center;gap:14px;width:100%;min-height:57px;padding:12px 18px;border:1px solid #e0e6dc;border-radius:10px;background:#fff;text-align:left;color:#475443;font-size:14px!important;line-height:1.8;overflow-wrap:anywhere}
#practiceBox .pz-option:disabled{opacity:1}
.pz-option:hover:not(:disabled){background:#f6f8f3;border-color:#9eb59b}
.pz-option-letter{display:grid;place-items:center;flex-shrink:0;width:26px;height:26px;border:1px solid #dfe6da;border-radius:7px;font-size:12px;color:#8a9884}
.pz-option>span:nth-child(2){flex:1;min-width:0}
.pz-option.is-selected{background:#f0f5ed;border-color:#779c79;color:#28554a}
.pz-option.is-selected .pz-option-letter{background:#28554a;border-color:#28554a;color:#fff}
.pz-option.is-correct{background:#eff7ef;border-color:#8bb395;color:#386b48}
.pz-option.is-wrong{background:#fff5ef;border-color:#dbac93;color:#a05b3a}
.pz-text-correct{color:#386b48}.pz-text-wrong{color:#a05b3a}
.pz-explanation{padding:19px 21px;background:#f5f7f1;border-radius:10px;border-left:3px solid #93aa87;margin-bottom:24px;font-size:13px;line-height:1.9}
.pz-explanation strong{font-size:13px;font-weight:600}
.pz-explanation p{white-space:pre-wrap;overflow-wrap:anywhere;color:#6f7d66;margin:9px 0 0}
.pz-question-footer{display:flex;justify-content:space-between;gap:12px;border-top:1px solid #edf0e9;padding-top:22px}
.pz-question-footer>div{display:flex;flex-wrap:wrap;gap:10px;justify-content:flex-end}
.pz-answer-sheet{padding:21px 20px}
.pz-answer-sheet h3{font-size:14px;margin:0}
.pz-number-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:7px;max-height:400px;overflow-y:auto;padding:3px}
.pz-number{display:grid;place-items:center;min-width:0;aspect-ratio:1;border:1px solid #e0e7db;border-radius:7px;background:#fff;color:#84917c;font-size:12px!important;font-variant-numeric:tabular-nums}
.pz-number.is-answered{background:#dfe9dc;color:#28554a;border-color:#b8cbb1}
.pz-number.is-correct{background:#e8f2e6;color:#44753e;border-color:#c6d8be}
.pz-number.is-wrong{background:#fff1e8;color:#ad6740;border-color:#ead0bd}
.pz-number.is-current{outline:2px solid #28554a;outline-offset:1px}
.pz-sheet-note{font-size:11px!important;line-height:1.9!important;margin-top:20px!important;color:#8a9682!important}
.pz-timer{font-size:18px;font-weight:500;color:#28554a;font-variant-numeric:tabular-nums}
.pz-timer.is-urgent{color:#a05b3a}
.pz-completion{text-align:center;border:1px solid #e1e7df;background:#fff;border-radius:16px;padding:56px 28px}
.pz-completion h2{font-size:30px;font-weight:500;color:#28554a;margin:13px 0}
.pz-completion>p{font-size:13px;color:#85907d;line-height:1.9}
.pz-result-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));max-width:540px;margin:38px auto}
.pz-result-metrics .pz-metric{padding:0 15px}
.pz-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}
.pz-save-note{margin:24px 0 0!important;font-size:12px!important}
.pz-setup-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:start}
.pz-exam-setup{padding:30px}
.pz-field{display:block;margin-top:25px}
.pz-field>span{display:block;font-size:12px;color:#7c8976;margin-bottom:12px}
.pz-select{max-width:100%;min-height:40px;padding:8px 35px 8px 13px;border:1px solid #dce4d7;border-radius:8px;background:#fff;color:#40533e;font-size:13px!important}
.pz-counts{display:flex;flex-wrap:wrap;gap:10px}
.pz-counts .is-selected{border-color:#789b75;background:#edf4e9;color:#28554a}
.pz-setup-summary{display:flex;align-items:center;flex-wrap:wrap;gap:15px;padding:20px;background:#f0f4ec;border-radius:10px;margin:28px 0 12px}
.pz-setup-summary b{font-weight:500;color:#28554a;font-size:22px}
.pz-setup-summary span{font-size:12px;color:#7a8d73}
.pz-muted{font-size:12px;color:#8a9682;line-height:1.9}
.pz-exam-setup>.pz-btn{margin-top:18px}
.pz-tips{margin:0;padding-left:18px;font-size:13px;line-height:2.1;color:#7b8973}
.pz-tips li{margin-bottom:13px;padding-left:4px}
.pz-toolbar{display:flex;align-items:center;gap:16px;margin-bottom:20px}
.pz-toolbar>span{flex:1;color:#8a9682;font-size:12px}
.pz-wrong-list{background:#fff;border:1px solid #e1e7df;border-radius:14px;padding:0 26px}
.pz-wrong-row{display:flex;align-items:start;gap:20px;border-bottom:1px solid #e9eee5;padding:24px 0}
.pz-wrong-row:last-child{border:0}
.pz-row-index{font-size:12px;color:#a3af9b;padding-top:2px}
.pz-wrong-row>div:first-of-type{flex:1;min-width:0}
.pz-wrong-row .pz-meta{margin-bottom:10px}
.pz-wrong-row h3{font-size:15px;font-weight:500;line-height:1.9;margin:0 0 12px;white-space:pre-wrap;overflow-wrap:anywhere}
.pz-wrong-row small{font-size:11px;color:#97a08f}
.pz-row-actions{display:grid;gap:8px;flex-shrink:0;padding-top:22px}
.pz-pager{display:flex;align-items:center;justify-content:center;gap:20px;margin-top:22px;color:#8a9682;font-size:12px}
.pz-subject-stat{padding:18px 0;border-bottom:1px solid #edf0e9}
.pz-subject-stat:last-child{border:0;padding-bottom:0}
.pz-subject-stat>div:first-child{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:13px}
.pz-subject-stat b{font-size:14px;font-weight:500}
.pz-subject-stat span{font-size:12px;color:#8a9682}
.pz-subject-stat>.pz-btn{margin-top:8px;font-size:12px!important}
.pz-exam-records>div{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:18px 0;border-bottom:1px solid #edf0e9;font-size:12px;color:#8a9682}
.pz-exam-records>div:last-child{border:0}
.pz-exam-records strong{font-size:20px;font-weight:500;color:#28554a}
.pz-exam-records small{font-size:12px;color:#8a9682;font-weight:400}
@media(min-width:1500px){.pz-home-columns{grid-template-columns:minmax(0,1fr) 310px}}
@media(max-width:1100px){.pz-home-columns{grid-template-columns:minmax(0,1fr) 240px;gap:18px}.pz-quick{padding:26px}.pz-quick-number{font-size:65px}.pz-subject-card{padding:20px}.pz-training-layout{grid-template-columns:minmax(0,1fr) 205px;gap:16px}.pz-question{padding:25px}.pz-answer-sheet{padding:20px 14px}.pz-setup-layout{grid-template-columns:minmax(0,1fr) 240px}}
@media(max-width:850px){.pz-home-columns,.pz-setup-layout{grid-template-columns:minmax(0,1fr)}.pz-home-aside{grid-template-columns:repeat(2,minmax(0,1fr))}.pz-training-layout{grid-template-columns:minmax(0,1fr)}.pz-answer-sheet{order:2}.pz-number-grid{grid-template-columns:repeat(10,minmax(0,1fr));max-height:160px}.pz-answer-sheet .pz-number{aspect-ratio:auto;min-height:34px}.pz-metric{padding:0 20px}.pz-wrong-row{gap:12px}}
@media(max-width:520px){#viewPractice .practice-tabs{gap:22px;margin-bottom:24px}#viewPractice .practice-tab{font-size:13px}.pz-heading{margin-bottom:23px;gap:10px}.pz-heading h2{font-size:22px}.pz-heading p{font-size:12px}.pz-heading-mark{display:none}.pz-metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:23px 0;padding:22px 0}.pz-metrics .pz-metric:nth-child(2){border:0}.pz-metric strong{font-size:27px}.pz-quick{padding:24px;gap:8px}.pz-quick-number{display:none}.pz-quick h3{font-size:23px}.pz-quick p{font-size:12px}.pz-subject-grid{grid-template-columns:minmax(0,1fr)}.pz-subject-card{padding:20px 22px}.pz-subject-card h4{margin-top:10px}.pz-subject-card p{margin-bottom:16px}.pz-home-aside{grid-template-columns:minmax(0,1fr)}.pz-panel{padding:22px}.pz-notice{align-items:flex-start}.pz-notice .pz-btn{flex-shrink:0}.pz-session-heading{flex-wrap:wrap;gap:8px}.pz-session-heading>span:first-of-type{order:3;width:100%;font-size:12px}.pz-question{padding:22px 18px}.pz-question-title{font-size:17px;line-height:1.9}.pz-meta{margin-bottom:20px}.pz-option{padding:12px;gap:10px}.pz-option-letter{width:24px;height:24px}.pz-number-grid{grid-template-columns:repeat(8,minmax(0,1fr))}.pz-question-footer{flex-wrap:wrap}.pz-question-footer>div{margin-left:auto}.pz-completion{padding:35px 18px}.pz-completion h2{font-size:25px}.pz-result-metrics .pz-metric{padding:0 9px}.pz-result-metrics strong{font-size:25px}.pz-completion .pz-actions{flex-direction:column}.pz-toolbar{flex-wrap:wrap;gap:10px}.pz-toolbar>.pz-btn{width:100%}.pz-wrong-list{padding:0 18px}.pz-wrong-row{flex-wrap:wrap}.pz-wrong-row>div:first-of-type{flex-basis:calc(100% - 30px)}.pz-row-actions{display:flex;justify-content:flex-end;width:100%;padding:0}.pz-wrong-row .pz-meta{flex-wrap:wrap;gap:4px}.pz-exam-setup{padding:22px}.pz-counts{gap:7px}.pz-counts .pz-btn{padding:9px 13px}.pz-subject-stat>div:first-child{flex-wrap:wrap}}
@media(prefers-reduced-motion:reduce){#practiceBox *{transition:none!important}}
.pz-province-bar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;padding:0 0 22px;margin-bottom:24px;border-bottom:1px solid #dee4df}
.pz-province-bar label{display:flex;align-items:center;gap:12px;font-size:13px;color:#40533e}
.pz-province-bar>span{font-size:11px;color:#7c8976;line-height:1.8}
@media(max-width:520px){.pz-province-bar{gap:10px;padding-bottom:18px;margin-bottom:22px}.pz-province-bar>span{max-width:100%}}
/* 科目题库：书本封面 */
.pz-subject-grid{grid-template-columns:repeat(auto-fill,minmax(160px,190px));gap:16px 18px;padding:3px 8px 12px 0}
.pz-subject-card{--book:#e1ebe4;--book-ink:#294c40;position:relative;isolation:isolate;display:flex;flex-direction:column;min-height:164px;padding:16px 14px 14px 22px!important;background:linear-gradient(90deg,#0000000b 0,transparent 7px,#ffffff38 10px,transparent 13px),var(--book);color:var(--book-ink);border:0;border-radius:4px 12px 12px 4px;box-shadow:3px 4px 0 #faf9f5,5px 5px 0 #d9ddd5,7px 9px 18px #203b2e12;transition:transform .18s,box-shadow .18s;text-align:left}
.pz-subject-card:nth-child(3n+2){--book:#eee4cf;--book-ink:#6c5835}
.pz-subject-card:nth-child(3n){--book:#e0e8ec;--book-ink:#405765}
.pz-subject-card::before{content:'';position:absolute;left:10px;top:0;bottom:0;border-left:1px solid #ffffff70;border-right:1px solid #00000009;width:2px;pointer-events:none}
.pz-subject-card::after{content:'';position:absolute;left:22px;right:14px;top:38px;border-top:1px solid currentColor;opacity:.16;pointer-events:none}
.pz-subject-card:hover:not(:disabled){transform:translateY(-3px);box-shadow:3px 4px 0 #faf9f5,5px 5px 0 #d9ddd5,8px 13px 22px #203b2e1c;border:0}
.pz-subject-index{font-size:10px;letter-spacing:.12em;color:inherit;opacity:.6}
.pz-subject-card h4{font-size:17px;line-height:1.4;font-weight:600;margin:20px 0 8px;color:inherit}
.pz-subject-card p{font-size:11px;line-height:1.6;margin:0 0 12px;color:inherit;opacity:.8}
.pz-subject-card p span{display:block;color:inherit;font-size:10px;opacity:.75;margin-top:3px}
.pz-subject-link{margin-top:auto;color:inherit;font-size:11px;padding-top:8px;border-top:1px solid #ffffff70}
.pz-subject-card:disabled{opacity:.65!important;cursor:default;filter:saturate(.6)}
.pz-subject-card:focus-visible{outline:2px solid #52765b;outline-offset:6px}
@media(max-width:1100px){.pz-subject-grid{grid-template-columns:repeat(auto-fill,minmax(150px,190px))}}
@media(max-width:520px){.pz-subject-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 16px}.pz-subject-card{min-height:154px;padding:14px 10px 12px 18px!important}.pz-subject-card h4{font-size:16px;margin-top:18px}.pz-subject-card::after{left:18px;right:10px;top:35px}.pz-subject-card p{font-size:11px}}
@media(prefers-reduced-motion:reduce){.pz-subject-card{transition:none}}

#practiceTabs:empty{display:none}
#practiceTabs .pz-scope-title{align-self:center;color:#294c40;font-size:17px;padding:0 12px}
.pz-mode-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.pz-mode-card{text-align:left;background:#fff;border:1px solid #e1e7df;border-radius:14px;padding:24px;color:#294c40;min-height:170px;display:flex;flex-direction:column;gap:12px;font:inherit;cursor:pointer}
.pz-mode-card h3{font-size:19px;margin:0}.pz-mode-card p{font-size:13px;color:#748277;margin:0;line-height:1.7}.pz-mode-card>span{font-size:12px;margin-top:auto;color:#52765b}.pz-mode-card:hover:not(:disabled){background:#eef4ef;border-color:#a7bda9}.pz-mode-card:disabled{opacity:.55;cursor:default}.pz-selected-subject{color:#294c40;font-weight:600}
@media(max-width:800px){.pz-mode-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:440px){.pz-mode-grid{grid-template-columns:1fr}.pz-mode-card{min-height:140px}}

/* 小开本竖版比例，封面不随容器拉宽 */
.pz-subject-grid{grid-template-columns:repeat(auto-fill,180px);gap:24px;justify-content:start;align-items:start}
.pz-subject-card{box-sizing:border-box;width:180px;aspect-ratio:1 / 1.414;height:auto;min-height:0;padding:18px 16px 18px 25px!important;align-self:start}
.pz-subject-card::after{left:25px;right:16px;top:43px}
.pz-subject-card h4{font-size:19px;line-height:1.4;margin:26px 0 12px}
.pz-subject-card p{font-size:11px;margin:0 0 14px}
.pz-subject-card p span{font-size:10px;line-height:1.8;margin-top:5px}
.pz-subject-link{display:flex;align-items:center;justify-content:space-between;width:100%;box-sizing:border-box;margin-top:auto;font-size:11px}
@media(max-width:520px){.pz-subject-grid{grid-template-columns:repeat(2,minmax(0,160px));gap:20px 16px}.pz-subject-card{width:100%;min-height:0;aspect-ratio:1 / 1.414;padding:15px 12px 15px 21px!important}.pz-subject-card::after{left:21px;right:12px;top:39px}.pz-subject-card h4{font-size:17px;margin:23px 0 9px}.pz-subject-card p span{font-size:9px}.pz-subject-link{font-size:10px}}

/* 封面信息：省份 / 考试 / 科目 */
.pz-subject-card .pz-cover-province{display:inline-flex;align-self:flex-start;background:#ffffff80;border-radius:4px;padding:4px 9px;color:inherit;font-size:12px;font-weight:600;letter-spacing:.06em;line-height:1.4}
.pz-subject-card .pz-cover-exam{display:block;font-size:12px;line-height:1.5;letter-spacing:.12em;color:inherit;opacity:.85;margin-top:13px}
.pz-subject-card::after{display:none}
.pz-subject-card h4{font-size:27px;line-height:1.3;font-weight:650;margin:12px 0 18px;letter-spacing:.01em}
.pz-subject-card p{font-size:10px;opacity:.65;margin-bottom:12px}
.pz-subject-card p span{font-size:9px}
@media(max-width:520px){.pz-subject-card .pz-cover-province{font-size:11px;padding:3px 8px}.pz-subject-card .pz-cover-exam{font-size:11px;margin-top:11px}.pz-subject-card h4{font-size:23px;margin:10px 0 14px}.pz-subject-card p{font-size:10px}.pz-subject-card p span{font-size:9px}}

#viewPractice #practiceTabs:empty{display:none!important;margin:0!important;padding:0!important}
#viewPractice #practiceTabs:empty::before,#viewPractice #practiceTabs:empty::after{display:none!important}

.pz-subject-card .pz-subject-link{display:none!important}

/* 收紧封面底部留白 */
.pz-subject-card{aspect-ratio:auto;height:auto;min-height:0;padding-bottom:20px!important}.pz-subject-card p{margin-bottom:0}.pz-subject-card p span{margin-bottom:0}
@media(max-width:520px){.pz-subject-card{aspect-ratio:auto;min-height:0;padding-bottom:18px!important}}

.pz-cover-heading{display:flex;align-items:center;gap:8px;white-space:nowrap}.pz-subject-card .pz-cover-exam{display:inline;margin:0;font-size:12px;letter-spacing:.05em}.pz-subject-card .pz-cover-province{flex-shrink:0}.pz-subject-card h4{text-align:center;width:100%;margin:22px 0 18px}
@media(max-width:520px){.pz-cover-heading{gap:6px}.pz-subject-card .pz-cover-exam{font-size:11px;margin:0}.pz-subject-card h4{margin:20px 0 16px}}

/* 简洁科目目录 */
#viewPractice #practiceTabs:not(:empty){display:flex;align-items:center;flex-wrap:wrap;gap:8px;width:100%;box-sizing:border-box;background:transparent;border-radius:0;padding:0 0 18px;margin:0 0 24px;border-bottom:1px solid #e3e8e1;box-shadow:none}
#practiceTabs .pz-scope-title{font-size:21px;padding:0 18px 0 6px;color:#263e34;font-weight:600}
#viewPractice #practiceTabs .practice-tab{font-size:12px;min-height:36px;padding:8px 12px;border-radius:8px;box-shadow:none;background:transparent;color:#7c887f}
#viewPractice #practiceTabs .practice-tab.active{background:#e6eee7;color:#294c40;font-weight:600}
#viewPractice #practiceTabs .practice-tab:first-child{width:34px;height:34px;padding:7px;background:#fff;border:1px solid #e0e6df;display:inline-flex;align-items:center;justify-content:center}
#practiceTabs svg{width:18px;height:18px}
.pz-subject-directory{max-width:1000px}
.pz-directory-meta{display:flex;align-items:center;gap:8px;margin:0 0 18px;color:#7d897f;font-size:11px}.pz-directory-meta b{font-weight:500;color:#57735f;background:#eaf0e9;padding:4px 8px;border-radius:5px}
.pz-mode-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.pz-mode-grid .pz-mode-card{display:flex;flex-direction:row;align-items:center;gap:16px;min-height:104px;padding:22px;background:#fff;border:0;border-radius:12px;box-shadow:0 3px 14px #263f3010;text-align:left;transition:background .15s,box-shadow .15s}
.pz-mode-icon{width:44px;height:44px;flex-shrink:0;display:flex;align-items:center;justify-content:center;border-radius:10px;background:#eaf0eb;color:#486e5c}.pz-mode-icon svg{width:23px;height:23px}.pz-mode-card:nth-child(2n) .pz-mode-icon{background:#f2ecdd;color:#8b7449}
.pz-mode-copy{display:block;min-width:0;flex:1}.pz-mode-grid .pz-mode-card h3{margin:0 0 6px;font-size:17px;font-weight:600;color:#2d4237;line-height:1.4}.pz-mode-grid .pz-mode-card p{font-size:12px;line-height:1.6;margin:0;color:#8a948d}
.pz-mode-grid .pz-mode-card .pz-mode-state{margin:0;font-size:11px;color:#8d9b90;flex-shrink:0}.pz-mode-state svg{width:17px;height:17px}.pz-mode-grid .pz-mode-card:hover:not(:disabled){background:#f2f6f1;box-shadow:0 5px 18px #263f3018}.pz-mode-grid .pz-mode-card:disabled{opacity:.5}
@media(max-width:620px){.pz-mode-grid{grid-template-columns:1fr}.pz-mode-grid .pz-mode-card{min-height:90px;padding:18px;gap:13px}#practiceTabs .pz-scope-title{font-size:18px;padding-right:8px}.pz-mode-grid .pz-mode-card h3{font-size:16px}}

.pz-mode-grid .pz-mode-card>.pz-mode-icon{margin:0!important;display:flex;width:44px;height:44px;font-size:inherit;padding:0;align-self:center}
#viewPractice #practiceTabs:not(:empty){background:transparent!important;border-radius:0!important;padding:0 0 18px!important}

/* 合并封面标签，适度加宽 */
.pz-subject-grid{grid-template-columns:repeat(auto-fill,210px);gap:24px}.pz-subject-card{width:210px}.pz-subject-card .pz-cover-province{font-size:12px;padding:5px 10px;letter-spacing:.03em}
@media(max-width:520px){.pz-subject-grid{grid-template-columns:repeat(2,minmax(0,190px));gap:18px 16px}.pz-subject-card{width:100%}.pz-subject-card .pz-cover-province{font-size:11px;padding:4px 8px}}

/* 统一科目栏与三列练习入口 */
#viewPractice #practiceTabs:not(:empty){max-width:1020px;gap:6px;margin-bottom:22px;padding-bottom:16px!important;justify-content:flex-start}
#practiceTabs .pz-scope-title{display:flex;align-items:center;gap:12px;margin-right:auto;padding:0 14px 0 6px;font-size:20px;line-height:1.5}
.pz-scope-context{font-size:11px;font-weight:500;color:#78867d;white-space:nowrap;padding-right:12px;border-right:1px solid #dce3dc}
#viewPractice #practiceTabs .practice-tab:not(:first-child){font-size:12px;padding:7px 13px;min-height:34px;background:transparent!important;color:#7f8b82;box-shadow:none!important;border:0}
#viewPractice #practiceTabs .practice-tab.active:not(:first-child){color:#294c40;background:#e8eee8!important}
.pz-subject-directory{max-width:1020px}.pz-subject-directory .pz-mode-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.pz-mode-grid .pz-mode-card{min-height:100px;padding:19px 16px;gap:12px;border-radius:11px}.pz-mode-grid .pz-mode-card>.pz-mode-icon{width:36px;height:36px;border-radius:9px}.pz-mode-icon svg{width:21px;height:21px}.pz-mode-grid .pz-mode-card h3{font-size:16px;margin-bottom:5px}.pz-mode-grid .pz-mode-card p{font-size:11px;line-height:1.65}.pz-mode-grid .pz-mode-card .pz-mode-state{font-size:10px}
@media(max-width:900px){.pz-subject-directory .pz-mode-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:580px){#practiceTabs .pz-scope-title{font-size:18px;gap:7px;padding-right:5px}.pz-scope-context{font-size:10px;padding-right:7px}#viewPractice #practiceTabs .practice-tab:not(:first-child){padding:6px 9px;font-size:11px}.pz-subject-directory .pz-mode-grid{grid-template-columns:1fr}.pz-mode-grid .pz-mode-card{min-height:88px;padding:16px}}

/* 封面辅助信息降级，科目为主 */
.pz-subject-card .pz-cover-province{font-size:10px;font-weight:400;padding:3px 7px;line-height:1.4;letter-spacing:.02em;color:var(--book-ink);background:#ffffff45;opacity:.72;border-radius:3px}
.pz-subject-card h4{margin-top:24px;margin-bottom:20px}
@media(max-width:520px){.pz-subject-card .pz-cover-province{font-size:10px;font-weight:400;padding:3px 6px}.pz-subject-card h4{margin-top:22px;margin-bottom:18px}}

.pz-subject-workspace{display:grid;grid-template-columns:185px minmax(0,1fr);gap:28px;align-items:start;max-width:1240px}.pz-subject-sidebar{display:grid;gap:8px;padding:10px;background:#eef2ec;border-radius:12px}.pz-subject-choice{display:flex;flex-direction:column;gap:6px;align-items:flex-start;padding:15px 16px;border:0;border-radius:8px;background:transparent;color:#65776a;cursor:pointer;text-align:left}.pz-subject-choice b{font-size:15px;font-weight:500}.pz-subject-choice small{font-size:10px;opacity:.65}.pz-subject-choice.active{background:#fff;color:#294c40;box-shadow:0 2px 8px #233e3010}.pz-subject-main{min-width:0}.pz-subject-main .pz-mode-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
@media(max-width:1000px){.pz-subject-main .pz-mode-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:650px){.pz-subject-workspace{grid-template-columns:1fr;gap:16px}.pz-subject-sidebar{display:flex;overflow-x:auto}.pz-subject-choice{flex-shrink:0;padding:12px}.pz-subject-main .pz-mode-grid{grid-template-columns:1fr}}

/* 左侧选书，右侧打开科目目录 */
.pz-book-workspace{grid-template-columns:350px minmax(0,1fr);gap:38px;max-width:1320px}
.pz-book-shelf{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 20px;padding:5px 8px 15px 0}
.pz-book-shelf .pz-subject-card{width:100%;min-height:155px;height:auto;padding:16px 12px 16px 23px!important;opacity:.8;transition:transform .18s,box-shadow .18s,opacity .18s}
.pz-book-shelf .pz-cover-province{font-size:9px;padding:3px 5px;white-space:nowrap}
.pz-book-shelf .pz-subject-card h4{font-size:23px;margin:23px 0 20px;line-height:1.35}.pz-book-shelf .pz-subject-card p{font-size:10px;margin:0}
.pz-book-shelf .pz-subject-card.is-current{opacity:1;transform:translateY(-3px);box-shadow:3px 4px 0 #faf9f5,5px 5px 0 #c4d0c7,8px 12px 20px #203b2e20}
.pz-book-directory{--directory-ink:#294c40;--directory-tint:#e1ebe4;padding-top:5px}.pz-book-directory.tone-1{--directory-ink:#6c5835;--directory-tint:#eee4cf}.pz-book-directory.tone-2{--directory-ink:#405765;--directory-tint:#e0e8ec}
.pz-book-directory-heading{position:relative;border-bottom:1px solid var(--directory-tint);padding:0 0 20px;margin-bottom:22px}.pz-book-directory-heading>span{font-size:11px;color:#8a958e}.pz-book-directory-heading h2{font-size:25px;font-weight:600;line-height:1.4;margin:8px 0 0;color:var(--directory-ink)}.pz-book-directory-heading small{position:absolute;right:0;bottom:22px;font-size:11px;color:#8a958e}
.pz-book-directory .pz-mode-card{box-shadow:0 2px 10px #263f300b;min-height:110px;padding:18px 13px;gap:10px}.pz-book-directory .pz-mode-card h3{font-size:15px}.pz-book-directory .pz-mode-card p{font-size:10px}.pz-book-directory .pz-mode-icon{color:var(--directory-ink);background:var(--directory-tint)}
.pz-book-directory .pz-mode-state{display:none}.pz-book-directory .pz-mode-card:nth-child(2n) .pz-mode-icon{color:var(--directory-ink);background:var(--directory-tint)}
@media(max-width:1100px){.pz-book-workspace{grid-template-columns:310px minmax(0,1fr);gap:28px}.pz-book-directory .pz-mode-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.pz-book-workspace{grid-template-columns:1fr;gap:24px}.pz-book-shelf{display:flex;overflow-x:auto;gap:18px;padding:6px 8px 18px 0}.pz-book-shelf .pz-subject-card{width:145px;flex-shrink:0;min-height:150px}.pz-book-directory .pz-mode-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:420px){.pz-book-directory .pz-mode-grid{grid-template-columns:1fr}}

/* 左侧三列书本，右侧两列项目 */
.pz-book-workspace{grid-template-columns:530px minmax(0,1fr);gap:38px;max-width:1320px}
.pz-book-shelf{grid-template-columns:repeat(3,minmax(0,1fr))}
.pz-book-directory .pz-mode-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:1150px){.pz-book-workspace{grid-template-columns:minmax(400px,.95fr) minmax(0,1fr);gap:26px}.pz-book-shelf{gap:20px 16px}.pz-book-shelf .pz-subject-card{padding-left:19px!important}.pz-book-shelf .pz-subject-card h4{font-size:20px}}
@media(max-width:900px){.pz-book-workspace{grid-template-columns:1fr;gap:26px}.pz-book-shelf{grid-template-columns:repeat(3,minmax(0,160px));justify-content:start}.pz-book-directory .pz-mode-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.pz-book-shelf{display:flex;overflow-x:auto;justify-content:flex-start}.pz-book-shelf .pz-subject-card{width:145px;flex-shrink:0}}
@media(max-width:420px){.pz-book-directory .pz-mode-grid{grid-template-columns:1fr}}

/* 选中科目：摊开的双页书本 */
.pz-book-shelf .pz-subject-card.is-current{background:linear-gradient(90deg,#fdfdf8 0%,#f8faf3 44%,#e0e6da 49.5%,#fffef9 51%,#fffef9 95%,#eef1e7 100%);border-radius:9px 9px 3px 3px;transform:translateY(-4px);box-shadow:0 3px 0 var(--book),0 5px 0 #d4ded3,0 10px 22px #203b2e23;opacity:1;color:var(--book-ink);outline:1px solid #c8d5c9;outline-offset:0}
.pz-book-shelf .pz-subject-card.is-current::before{display:block;content:'';position:absolute;left:5px;right:50%;top:8px;bottom:8px;width:auto;border:0;border-left:1px solid #e2e6dc;border-bottom:1px solid #e2e6dc;border-radius:0 0 0 8px;pointer-events:none}
.pz-book-shelf .pz-subject-card.is-current::after{display:block;content:'';position:absolute;left:50%;right:5px;top:8px;bottom:8px;width:auto;border:0;border-right:1px solid #e2e6dc;border-bottom:1px solid #e2e6dc;border-radius:0 0 8px 0;opacity:1;pointer-events:none}
.pz-book-shelf .pz-subject-card.is-current h4{position:relative;z-index:1;background:#fbfcf6d9;border-radius:4px;padding:3px 0;margin-top:20px;margin-bottom:17px}
.pz-book-shelf .pz-subject-card.is-current .pz-cover-province{background:var(--book);opacity:.9}
#viewPractice #practiceTabs:not(:empty){justify-content:flex-end;padding-bottom:10px!important;margin-bottom:18px;border:0}
#viewPractice #practiceTabs .practice-tab:first-child{width:auto;height:auto;min-height:34px;padding:7px 13px;display:inline-flex;border:0;background:transparent}
#viewPractice #practiceTabs .practice-tab.active{background:#e8eee8!important;color:#294c40}

/* 清晰分区与轻量展开书页 */
.pz-book-workspace{position:relative;column-gap:38px}.pz-book-directory{position:relative;padding-left:24px;border-left:1px solid #dce3db}
.pz-book-shelf .pz-subject-card.is-current{display:grid;grid-template-columns:43% 57%;grid-template-rows:1fr auto;align-items:center;gap:12px 0;padding:17px 9px!important;outline:0;border:0;border-radius:3px 6px 6px 3px;background:linear-gradient(90deg,#f6f7ef 0,#fdfdf7 44%,#e3e7db 49%,#f9fbf3 51%,#fffef9 60%,#fffef9 100%);box-shadow:0 3px 0 #dce4d6,0 5px 0 var(--book),0 8px 16px #203b2e15;transform:translateY(-2px)}
.pz-book-shelf .pz-subject-card.is-current::before,.pz-book-shelf .pz-subject-card.is-current::after{display:none}
.pz-book-shelf .pz-subject-card.is-current .pz-cover-heading{grid-column:1;grid-row:1;align-self:start;padding-top:5px;white-space:normal}
.pz-book-shelf .pz-subject-card.is-current .pz-cover-province{background:none;white-space:normal;font-size:9px;line-height:1.8;padding:0 5px;opacity:.7}
.pz-book-shelf .pz-subject-card.is-current h4{grid-column:2;grid-row:1 / 3;margin:0!important;padding:0 4px;background:none;border-radius:0;font-size:22px;line-height:1.5;overflow-wrap:anywhere}
.pz-book-shelf .pz-subject-card.is-current p{grid-column:1;grid-row:2;margin:0;padding:0 4px;font-size:8px;line-height:1.8;opacity:.6}
@media(max-width:900px){.pz-book-directory{padding-left:0;padding-top:24px;border-left:0;border-top:1px solid #dce3db}}

/* 封面翻折至背后，露出单页内芯 */
.pz-book-shelf .pz-subject-card.is-current{display:flex;flex-direction:column;align-items:stretch;gap:0;padding:16px 12px 16px 23px!important;background:linear-gradient(90deg,#dce4d8 0,#eef1e7 5px,#fffef8 12px,#fffef8 100%);border-radius:2px 6px 6px 2px;box-shadow:-5px 2px 0 var(--book),-7px 4px 0 var(--book-ink),1px 3px 0 #e4e8dc,2px 5px 0 #f7f8f0,0 10px 18px #203b2e17;transform:translateY(-3px);outline:0;isolation:isolate}
.pz-book-shelf .pz-subject-card.is-current::before{display:block;content:'';position:absolute;left:4px;top:8px;bottom:8px;width:3px;right:auto;border:0;border-radius:1px;background:linear-gradient(90deg,#8f9d8640,#ffffff70);pointer-events:none}
.pz-book-shelf .pz-subject-card.is-current::after{display:block;content:'';position:absolute;left:auto;right:3px;top:9px;bottom:6px;width:2px;border:0;border-radius:1px;background:#e4e8dd;opacity:.6;pointer-events:none}
.pz-book-shelf .pz-subject-card.is-current .pz-cover-heading{display:flex;align-self:stretch;padding:0;white-space:nowrap}
.pz-book-shelf .pz-subject-card.is-current .pz-cover-province{background:var(--book);font-size:9px;line-height:1.4;padding:3px 5px;white-space:nowrap;opacity:.75}
.pz-book-shelf .pz-subject-card.is-current h4{font-size:23px;line-height:1.35;margin:23px 0 20px!important;padding:0;background:none;border-radius:0;text-align:center;overflow-wrap:normal}
.pz-book-shelf .pz-subject-card.is-current p{font-size:10px;line-height:1.6;margin:0;padding:0;opacity:.65}
@media(max-width:1150px){.pz-book-shelf .pz-subject-card.is-current h4{font-size:20px}}

/* 明确翻折面的亮脊、暗折线与纸页投影 */
.pz-book-shelf .pz-subject-card.is-current{background:linear-gradient(90deg,#899c86 0,#d9e1d0 3px,#fbfcf3 7px,#9aaa915c 11px,#f6f8ed 16px,#fffef8 24px,#fffef8 100%);box-shadow:-6px 2px 0 var(--book),-9px 4px 0 var(--book-ink),1px 3px 0 #dce3d4,2px 5px 0 #f7f8f0,0 9px 18px #203b2e1b}
.pz-book-shelf .pz-subject-card.is-current::before{display:block;left:2px;right:auto;top:0;bottom:0;width:14px;border:0;border-radius:1px;background:linear-gradient(90deg,#425c3d50 0%,#d0dac550 18%,#fffef3e0 43%,#b7c5aa90 66%,#6f82666b 76%,transparent 100%);box-shadow:5px 0 7px -3px #43543a55;clip-path:polygon(0 3%,46% 0,100% 2%,100% 98%,46% 100%,0 97%);pointer-events:none}
.pz-book-shelf .pz-subject-card.is-current::after{display:block;left:10px;right:auto;top:4px;bottom:4px;width:1px;background:#6d806158;border:0;opacity:1;box-shadow:1px 0 0 #ffffffb0}

/* 选中书页去除外圈封面及底部叠边，仅保留折痕 */
.pz-book-shelf .pz-subject-card.is-current,.pz-book-shelf .pz-subject-card.is-current:hover:not(:disabled){border:0;outline:0;box-shadow:0 5px 15px #203b2e0c;border-radius:2px 6px 6px 2px}

/* Same arrow and auxiliary control styling as the course back button. */
.pz-toolbar .pz-back-button{display:inline-flex;align-items:center;justify-content:center;box-sizing:border-box;margin-left:auto;width:32px;height:32px;min-height:32px;padding:0;border:1px solid #d8e2da;border-radius:8px;background:#fff;color:#436854;box-shadow:none;flex-shrink:0;cursor:pointer;transition:background-color .15s,border-color .15s,color .15s;transform:none}
.pz-toolbar .pz-back-button:hover{background:#eaf1e8;border-color:#adc5b2;color:#28553d;box-shadow:none;transform:none}
.pz-toolbar .pz-back-button:focus-visible{outline:2px solid #789b81;outline-offset:3px}

/* A single compact header for subject context and navigation. */
#viewPractice #practiceTabs:not(:empty){display:flex;align-items:center;justify-content:flex-start;flex-wrap:wrap;gap:20px;max-width:none;padding:0 0 18px!important;margin:0 0 24px;border-bottom:1px solid #dce3db}
#practiceTabs .pz-context-heading{display:flex;align-items:center;gap:14px;min-width:0;margin-right:auto}
#practiceTabs .pz-context-copy{display:flex;flex-direction:column;gap:4px;min-width:0}
#practiceTabs .pz-context-copy small{font-size:11px;line-height:1.5;color:#87948b}
#practiceTabs .pz-context-copy h2{margin:0;font-size:24px;font-weight:600;line-height:1.35;color:#294c40}
#practiceTabs .pz-context-tabs{display:flex;align-items:center;gap:4px;flex-shrink:0;padding:3px;background:#edf1eb;border-radius:9px}
#viewPractice #practiceTabs .pz-context-tabs .practice-tab{display:inline-flex;align-items:center;justify-content:center;width:auto;height:auto;min-height:32px;padding:6px 14px;border:0;border-radius:7px;font-size:12px;line-height:1.5;color:#7c887f;background:transparent!important;box-shadow:none!important}
#viewPractice #practiceTabs .pz-context-tabs .practice-tab.active{color:#294c40;background:#fff!important;box-shadow:0 1px 3px #203b2e0a!important}
#practiceTabs .pz-back-button{display:inline-flex;align-items:center;justify-content:center;box-sizing:border-box;width:32px;height:32px;min-height:32px;padding:0;border:1px solid #d8e2da;border-radius:8px;background:#fff;color:#436854;box-shadow:none;flex-shrink:0;cursor:pointer;transition:background-color .15s,border-color .15s}
#practiceTabs .pz-back-button:hover{background:#eaf1e8;border-color:#adc5b2;color:#28553d}
#practiceTabs .pz-back-button:focus-visible{outline:2px solid #789b81;outline-offset:3px}
@media(max-width:600px){#viewPractice #practiceTabs:not(:empty){gap:14px;margin-bottom:18px;padding-bottom:16px!important}#practiceTabs .pz-context-heading{gap:10px}#practiceTabs .pz-context-copy h2{font-size:21px}#practiceTabs .pz-context-tabs{margin-left:42px}#viewPractice #practiceTabs .pz-context-tabs .practice-tab{padding:6px 12px}}

.pz-book-shelf-title{grid-column:1 / -1;margin:0 0 2px;padding:0 0 12px;border-bottom:1px solid #dfe5dd;font-size:18px;line-height:1.5;font-weight:600;color:#304c3e}
@media(max-width:760px){.pz-book-shelf{flex-wrap:wrap;overflow-x:visible}.pz-book-shelf-title{flex-basis:100%}.pz-book-shelf .pz-subject-card{width:calc((100% - 36px)/3);min-width:100px}}

/* 上方科目，下方项目 */
.pz-book-workspace{display:grid;grid-template-columns:minmax(0,1fr);gap:28px;max-width:1320px}
.pz-book-shelf{display:grid;grid-template-columns:repeat(auto-fill,160px);gap:22px;padding:5px 8px 18px 0;overflow:visible;justify-content:start}
.pz-book-shelf-title{grid-column:1 / -1;margin-bottom:0}
.pz-book-shelf .pz-subject-card{width:160px;min-width:0;min-height:155px}
.pz-book-directory{padding-left:0;padding-top:24px;border-left:0;border-top:1px solid #dce3db}
.pz-book-directory .pz-mode-grid{grid-template-columns:repeat(3,minmax(0,1fr));max-width:1100px}
@media(max-width:900px){.pz-book-workspace{grid-template-columns:1fr}.pz-book-shelf{display:grid;grid-template-columns:repeat(auto-fill,150px)}.pz-book-shelf .pz-subject-card{width:150px}.pz-book-directory .pz-mode-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:520px){.pz-book-shelf{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.pz-book-shelf .pz-subject-card{width:100%;min-width:0}.pz-book-directory .pz-mode-grid{grid-template-columns:1fr}}

/* 练习选项栏与课程内容区起点对齐 */
#viewPractice #practiceTabs:not(:empty){justify-content:flex-start;align-self:flex-start;width:max-content;max-width:100%;margin:0 0 24px 0!important;padding:4px!important;background:#eaf0e8!important;border:0;border-radius:12px!important;gap:4px;box-shadow:none}
#viewPractice #practiceTabs .practice-tab{min-height:36px;padding:8px 17px!important;border:0;border-radius:9px;white-space:nowrap}
#viewPractice #practiceTabs .practice-tab.active{background:#fff!important;color:#294c40;box-shadow:0 2px 6px #263f300b!important}

/* 科目始终单行，超宽横向滚动 */
.pz-book-shelf{position:relative;display:flex!important;flex-wrap:nowrap!important;gap:22px!important;overflow-x:auto!important;overflow-y:hidden;padding:54px 10px 20px 2px!important;scrollbar-width:thin;scroll-snap-type:x proximity}
.pz-book-shelf-title{position:absolute;left:0;top:0;margin:0;width:100%;box-sizing:border-box;padding-bottom:12px}
.pz-book-shelf .pz-subject-card{flex:0 0 160px!important;width:160px!important;min-width:160px!important;scroll-snap-align:start}
.pz-book-directory .pz-mode-grid{grid-template-columns:repeat(3,minmax(0,270px))!important;max-width:850px;justify-content:start;gap:16px}
.pz-book-directory .pz-mode-card{min-height:86px;padding:16px 13px}.pz-book-directory .pz-mode-card h3{font-size:15px}.pz-book-directory .pz-mode-card p{font-size:10px}
#viewPractice #practiceTabs:not(:empty){width:100%!important;max-width:none;display:flex;align-items:center;justify-content:space-between;background:transparent!important;padding:0!important;gap:14px}
#practiceTabs .pz-context-copy{display:none!important}#practiceTabs .pz-context-heading{order:2;margin-left:auto}#practiceTabs .pz-context-tabs{order:1}
@media(max-width:900px){.pz-book-directory .pz-mode-grid{grid-template-columns:repeat(2,minmax(0,270px))!important}}
@media(max-width:520px){.pz-book-shelf .pz-subject-card{flex-basis:145px!important;width:145px!important;min-width:145px!important}.pz-book-directory .pz-mode-grid{grid-template-columns:minmax(0,270px)!important}}

/* 目录页无需返回，明确标记当前书本 */
#viewPractice:has(.pz-book-workspace) #practiceTabs .pz-context-heading{display:none!important}
#viewPractice:has(.pz-book-workspace) #practiceTabs{justify-content:flex-start!important}
.pz-book-shelf .pz-subject-card.is-current{background:linear-gradient(90deg,#899c86 0,#d9e1d0 3px,#fbfcf3 7px,#9aaa915c 11px,#f6f8ed 16px,#fffef8 24px,#fffef8 100%);box-shadow:inset 0 -3px 0 var(--book-ink),0 6px 16px #203b2e15!important}
.pz-book-shelf .pz-subject-card.is-current::after{content:'✓ 当前科目';display:flex;align-items:center;justify-content:center;position:absolute;left:auto;right:10px;top:auto;bottom:10px;width:auto;height:20px;padding:0 7px;background:var(--book-ink);color:#fff;font-size:9px;line-height:20px;font-weight:500;letter-spacing:.02em;border:0;border-radius:4px;box-shadow:none;opacity:1;pointer-events:none}
.pz-book-shelf .pz-subject-card.is-current p{padding-bottom:20px}

/* 收紧科目封面，使用轻量滚动条 */
.pz-book-shelf{scrollbar-width:thin;scrollbar-color:#cbd5c9 transparent;padding-bottom:13px!important}
.pz-book-shelf::-webkit-scrollbar{height:4px}.pz-book-shelf::-webkit-scrollbar-track{background:transparent}.pz-book-shelf::-webkit-scrollbar-thumb{background:#cbd5c9;border-radius:8px}.pz-book-shelf::-webkit-scrollbar-thumb:hover{background:#acbca9}
.pz-book-shelf .pz-subject-card,.pz-book-shelf .pz-subject-card.is-current{box-sizing:border-box;height:130px;min-height:130px;padding-top:13px!important;padding-bottom:13px!important}
.pz-book-shelf .pz-subject-card p{display:none!important}
.pz-book-shelf .pz-subject-card h4,.pz-book-shelf .pz-subject-card.is-current h4{margin:18px 0 0!important;font-size:22px;line-height:1.35}
.pz-book-shelf .pz-subject-card.is-current::after{bottom:7px;font-size:8px;height:17px;line-height:17px;padding:0 5px}
@media(max-width:1150px){.pz-book-shelf .pz-subject-card h4,.pz-book-shelf .pz-subject-card.is-current h4{font-size:20px}}