:root{font-family:'Segoe UI','Microsoft YaHei',Arial,sans-serif;color:#243b2d;background:#f3f6f2;color-scheme:light}*{box-sizing:border-box}.app-page{margin:0;line-height:1.6}.app-shell{max-width:1280px;margin:22px auto 40px;padding:22px 30px 32px;background:#fff;border:1px solid #dce6d9;border-radius:13px}.app-page h1{font-size:29px;line-height:1.35;margin:7px 0 10px}.app-eyebrow{font-size:11px;letter-spacing:.12em;font-weight:700;color:#54815d;margin:5px 0}.subtle{font-size:12px;color:#748174;line-height:1.6}.app-page a,.account-bar a{color:#2e7046;text-decoration:none}.app-page a:hover,.account-bar a:hover{text-decoration:underline}.account-header{display:flex;align-items:center;justify-content:flex-end;gap:16px;font-size:12px;min-height:30px}.account-name{font-weight:650;color:#3d6446;margin-right:auto}.catalogue-header{margin:20px 0}.progress-overview{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:24px 0}.overview-card{padding:15px 18px;border:1px solid #dce8d9;border-radius:9px;background:#f8fbf6;display:flex;align-items:center;gap:13px}.overview-card strong{font-size:25px;font-weight:650;color:#2f6b43}.overview-card span{font-size:12px;color:#71836d}.filters{display:flex;gap:9px;flex-wrap:wrap;margin:18px 0 13px}.filters input{flex:1;min-width:230px}.app-page input,.app-page select,.password-reset input{font:inherit;font-size:13px;background:#fff;border:1px solid #bfcfbc;border-radius:6px;padding:9px 10px;color:#294c33}.app-page select{padding-right:25px}.catalogue-caption{display:flex;justify-content:space-between;gap:12px;margin:12px 0;font-size:12px;color:#61735c}.table-scroll{overflow-x:auto}.practice-table{border-collapse:collapse;width:100%;font-size:13px}.practice-table th{text-align:left;padding:11px 13px;background:#f4f8f0;color:#637b5c;font-size:12px;font-weight:600;border-bottom:1px solid #d9e4d4}.practice-table td{padding:16px 13px;vertical-align:middle;border-bottom:1px solid #e8ede4}.paper-title{min-width:290px;width:46%}.paper-title>a{font-size:14px;font-weight:600;color:#294e34}.paper-origin{white-space:nowrap}.practice-badge{display:inline-block;font-size:11px;border-radius:5px;padding:2px 8px;background:#eff2ec;color:#7c8776}.practice-badge.done{background:#e8f5e8;color:#347246}.practice-badge.in_progress{background:#fff3d9;color:#927434}.progress-detail{font-size:11px;color:#71846b;margin:3px 0}.paper-actions{min-width:155px}.paper-actions>a{display:block;font-size:12px;margin:3px 0}.primary-link{font-weight:650}.quiet-button,.primary-button{font:inherit;font-size:12px;border:1px solid #bdcdb8;border-radius:5px;padding:5px 10px;background:#fff;color:#3f6a46;cursor:pointer;white-space:nowrap}.quiet-button:hover{background:#f1f7ed}.quiet-button:disabled,.primary-button:disabled{opacity:.55;cursor:wait}.primary-button{background:#2f7045;color:#fff;border-color:#2f7045;padding:10px 18px;font-weight:600}.empty-row{text-align:center;color:#85927e;padding:45px!important}.form-message{font-size:13px;line-height:1.6;color:#9c4a37;min-height:20px}.login-page{display:flex;align-items:center;justify-content:center;min-height:100dvh;padding:24px;background:radial-gradient(ellipse at top,#eaf3e4,transparent 65%),#f5f7f3}.login-card{width:420px;max-width:100%;padding:36px;background:#fff;border:1px solid #dce6d7;border-radius:14px;box-shadow:0 12px 42px #4058390b}.login-card h1{font-size:25px}.login-card form{margin-top:24px}.login-card label,.create-user label{display:flex;flex-direction:column;gap:6px;font-size:12px;color:#58734f;margin:14px 0}.login-card input{width:100%;font-size:15px;padding:11px}.login-card .primary-button{width:100%;margin-top:10px;font-size:14px}.login-note{border-top:1px solid #edf1e9;margin:20px 0 0;padding-top:17px;font-size:11px;color:#8b9784}.admin-shell{max-width:960px}.create-user{display:flex;align-items:flex-end;gap:15px;background:#f6faf3;border:1px solid #dfe9d8;border-radius:9px;padding:14px 18px;margin:24px 0 8px}.create-user label{margin:0;flex:1}.password-reset{display:flex;gap:6px;flex-wrap:wrap}.password-reset input{font-size:12px;width:190px}.account-bar{display:flex;align-items:center;flex-wrap:wrap;gap:7px 12px;font-size:11px;line-height:1.4;background:#f5f9f1;border:1px solid #dce6d5;border-radius:6px;padding:6px 10px;margin:0 0 8px}.account-bar .sync-status{margin-right:auto;color:#7e8e74}.account-bar .sync-status[data-state=error]{color:#a94131}.account-bar .sync-status[data-state=saving]{color:#9b7b33}.account-bar .quiet-button{font-size:11px;padding:3px 7px}.account-bar .account-name{margin-right:0}.account-bar .done-label{font-weight:600;color:#477341}.account-bar .danger-button{color:#a25642}.account-bar .account-admin{font-size:11px}.account-bar-error{border-color:#ddbfb0;background:#fff7f0}.account-bar [hidden]{display:none!important}[inert]{opacity:.75}.app-page :focus-visible{outline:3px solid #bed4b5;outline-offset:2px}@media(max-width:760px){.app-shell{margin:8px;padding:15px 14px}.app-page h1{font-size:23px}.progress-overview{gap:7px;grid-template-columns:repeat(2,1fr)}.overview-card{padding:10px 13px}.catalogue-caption{flex-direction:column}.paper-title{min-width:240px}.account-header{gap:10px}.create-user{flex-direction:column;align-items:stretch}.create-user label{width:100%}.account-bar{gap:6px 8px}.login-card{padding:26px}.filters select{flex:1}.practice-table td,.practice-table th{padding:12px 8px}}
@media(max-width:760px){.catalogue-page .practice-table,.catalogue-page #papers{display:block}.catalogue-page .practice-table thead{display:none}.catalogue-page #papers tr{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px 16px;padding:15px 12px;margin:10px 0;border:1px solid #e0e8da;border-radius:8px}.catalogue-page #papers td{display:block;padding:0;border:0;min-width:0;width:auto}.catalogue-page #papers .paper-title{grid-column:1/-1}.catalogue-page #papers .paper-origin{display:flex;align-items:center;gap:9px;font-size:11px}.catalogue-page #papers .paper-actions{grid-column:2;grid-row:2/4;display:flex;flex-direction:column;align-items:flex-end;justify-content:center;gap:2px}.catalogue-page #papers td:nth-child(3){grid-column:1}.catalogue-page .progress-detail{white-space:nowrap}}

/* Translations follow their English text and never alter the answer fields. */
.listening-workbench .mt-toggle{font-size:11px;min-height:24px;padding:3px 8px;flex:none;margin-left:auto;font-weight:500}
.listening-workbench .mt-toggle[aria-pressed=true]{background:#e8f2e4;border-color:#8cb28a;color:#2e6740}
.lp-panel-heading .lp-count{margin-left:auto}.lp-panel-heading .mt-toggle{margin-left:0}.lp-panel-heading .mt-notice:empty{display:none}
.mt-notice{font-size:11px;color:#8a6a35;line-height:1.4}
.listening-workbench .mt-transcript-translation,.listening-workbench .mt-question-translation{display:block;font-family:'Microsoft YaHei','Segoe UI',sans-serif;font-size:12px;font-weight:400;line-height:1.7;color:#788470;letter-spacing:normal;text-align:left;margin:4px 0 2px;white-space:normal}
.listening-workbench .mt-transcript-translation{padding-top:3px;border-top:1px solid #e7eddf;color:#75816c}
.listening-workbench .mt-question-source{white-space:inherit}
.lp-text-hidden .mt-transcript-translation{display:none!important}
@media print{.mt-toggle,.mt-notice{display:none!important}}

/* Answer-word specialties */
.sp-shortcuts,.sp-categories{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:20px 0}.sp-shortcuts a,.sp-category{padding:15px 18px;border:1px solid #d4e2cc;border-radius:9px;background:#f7faf3;display:flex;flex-direction:column;gap:5px;text-align:left;color:#355c3c}.sp-shortcuts strong,.sp-category strong{font-size:16px}.sp-shortcuts span,.sp-category span{font-size:12px;line-height:1.7;color:#71846b}.sp-category{font:inherit;cursor:pointer}.sp-category.is-selected{border-color:#52804b;box-shadow:0 0 0 1px #52804b;background:#f0f7e8}.sp-category .sp-category-count{font-size:12px;font-weight:600;color:#50774a}.sp-title{font-size:18px;color:#365f3c;margin:0 0 14px}.sp-continue{display:inline-block;margin-top:10px;font-size:13px}.sp-table{max-height:430px;overflow:auto}.sp-table th{position:sticky;top:0;z-index:1}.sp-table td{padding:12px 13px}@media(max-width:700px){.sp-shortcuts,.sp-categories{grid-template-columns:1fr}.sp-shortcuts a,.sp-category{padding:12px 14px}.account-header{flex-wrap:wrap}}

.app-page [hidden]{display:none!important}

/* One navigation rail keeps the practice area clear. */
.mango-sidebar{position:fixed;inset:0 auto 0 0;width:178px;background:#f9fbf7;border-right:1px solid #dbe5d5;z-index:40;display:flex;flex-direction:column;padding:22px 12px 16px;gap:24px;font:13px/1.5 'Segoe UI','Microsoft YaHei',Arial,sans-serif;color:#35533a}
.mango-brand{display:flex;align-items:center;gap:9px;padding:0 8px;color:#28553a!important;text-decoration:none!important;font-weight:700;font-size:17px;white-space:nowrap}.mango-brand-mark{display:flex;align-items:center;justify-content:center;width:30px;height:30px;background:#3e7851;color:#fff;border-radius:9px;font:700 18px/1 Arial}.mango-module-tabs{display:flex;flex-direction:column;gap:7px}.mango-module-tab{display:flex;align-items:center;gap:9px;border:1px solid transparent;border-radius:8px;padding:10px 9px;color:#61745e!important;text-decoration:none!important;font-size:12px;line-height:1.45}.mango-module-tab:hover{background:#eef4e9;color:#35603e!important}.mango-module-tab[aria-current=page]{background:#e8f1e1;border-color:#d0e0c4;color:#2e663e!important;font-weight:650}.mango-module-icon{width:24px;height:24px;flex:none;display:flex;align-items:center;justify-content:center;border:1px solid #dbe6d2;border-radius:6px;background:#fff;font-size:11px;font-weight:650}.mango-sidebar-account{display:flex;flex-direction:column;gap:9px;margin-top:auto;padding:14px 7px 0;border-top:1px solid #dfe8d8}.mango-sidebar-name{font-size:12px;font-weight:650;overflow-wrap:anywhere}.mango-sidebar-account .quiet-button{align-self:flex-start;font-size:11px;background:transparent}
body.mango-has-sidebar{padding-left:178px}.mango-has-sidebar .app-shell,.mango-has-sidebar.listening-page main{max-width:none;margin:12px 14px 28px;padding:18px 22px 24px;border-radius:10px}.mango-has-sidebar .account-header[hidden]{display:none!important}.mango-has-sidebar .catalogue-header{margin:4px 0 12px}.mango-has-sidebar .app-page h1,.mango-has-sidebar h1{font-size:25px}.mango-has-sidebar .progress-overview{margin:18px 0;gap:9px}.mango-has-sidebar .overview-card{padding:11px 14px;gap:10px}.mango-has-sidebar .overview-card strong{font-size:23px}.mango-has-sidebar .sp-shortcuts,.mango-has-sidebar .sp-categories{margin:14px 0;gap:9px}.mango-has-sidebar .sp-shortcuts a,.mango-has-sidebar .sp-category{padding:11px 14px}.mango-has-sidebar .sp-shortcuts strong,.mango-has-sidebar .sp-category strong{font-size:14px}.mango-has-sidebar .filters{margin:16px 0 10px;gap:7px}.mango-has-sidebar .filters input,.mango-has-sidebar .filters select{padding:8px 9px}.mango-has-sidebar .sp-table{max-height:max(400px,calc(100dvh - 370px))}

/* Drag the centre rail for width and a pane's lower edge for height. */
.listening-workbench .lp-columns,.nb-training-columns{--mango-default-left:1fr;--mango-default-right:2fr;--mango-min-left:0px}
.mango-resizable-columns{grid-template-columns:minmax(var(--mango-min-left,250px),var(--mango-split,var(--mango-default-left,calc(50% - 11px)))) 10px minmax(270px,var(--mango-default-right,1fr))!important;gap:6px!important;align-items:start}.mango-column-divider{height:100%;min-height:0;align-self:stretch;cursor:col-resize;touch-action:none;position:relative;outline:none;border-radius:6px}.mango-column-divider:before{content:'';position:absolute;left:4px;top:7%;bottom:7%;width:2px;border-radius:4px;background:#dce6d5}.mango-column-divider:hover,.mango-column-divider:focus-visible{background:#edf4e7}.mango-column-divider:hover:before,.mango-column-divider:focus-visible:before{background:#789c68}.mango-height-grip{height:11px;min-height:11px;flex:none;cursor:row-resize;touch-action:none;position:relative;background:#f7faf4;border-top:1px solid #e4ebdf;outline:none}.mango-height-grip:before{content:'';position:absolute;left:calc(50% - 18px);top:4px;width:36px;height:2px;background:#bacdaf;border-radius:2px}.mango-height-grip:hover,.mango-height-grip:focus-visible{background:#eaf2e3}.mango-resizing,.mango-resizing *{user-select:none!important}.lp-normal:not(.lp-normal-text) .mango-resizable-columns{grid-template-columns:minmax(0,1fr)!important}.lp-normal:not(.lp-normal-text) .mango-column-divider{display:none}
.mango-has-sidebar .lp-transcript-panel,.mango-has-sidebar .lp-question-panel{height:var(--mango-user-height,var(--mango-auto-height,var(--lp-panel-height,max(260px,calc(100dvh - 340px)))))!important;min-height:220px;max-height:none;overflow:hidden}.mango-has-sidebar .lp-transcript-viewport,.mango-has-sidebar .lp-question-panel #practice-questions{min-height:0;max-height:none;flex:1;overflow:auto}.mango-has-sidebar .lp-columns{margin-top:7px}.mango-has-sidebar .lp-panel-heading{flex-wrap:wrap;padding:8px 10px;gap:5px 7px}.mango-has-sidebar .lp-panel-heading .lp-count{font-size:10px}.mango-has-sidebar .listening-workbench .lp-panel-heading h2{font-size:14px}.mango-has-sidebar .lp-controls{padding:9px 11px;margin-bottom:9px}.mango-has-sidebar .lp-top,.mango-has-sidebar .lp-transport,.mango-has-sidebar .lp-lazy-options{gap:7px 10px}.mango-has-sidebar .lp-top .lp-modes{margin-right:8px}.mango-has-sidebar .lp-field,.mango-has-sidebar .lp-check{font-size:12px}.mango-has-sidebar .lp-button{min-height:30px;font-size:12px;padding:5px 9px}.mango-has-sidebar .lp-button.lp-primary{font-weight:650}.mango-has-sidebar .lp-question-chips{gap:5px;padding:9px 10px}.mango-has-sidebar .lp-status{margin-right:60px}.mango-has-sidebar .listening-workbench{margin-bottom:8px}.mango-has-sidebar .account-bar{padding:6px 8px;margin-bottom:7px}.mango-has-sidebar .account-bar .account-admin{display:none}.mango-has-sidebar.listening-page main>header h1{font-size:20px}.mango-has-sidebar.listening-page .footer{margin-top:15px;padding-top:10px}
@media(min-width:1700px){.mango-has-sidebar .app-shell,.mango-has-sidebar.listening-page main{max-width:1650px;margin-left:auto;margin-right:auto}}
@media(max-width:1000px){.mango-sidebar{width:150px;padding:18px 8px 13px}.mango-brand{font-size:15px;padding:0 5px;gap:7px}.mango-brand-mark{width:27px;height:27px}.mango-module-tab{padding:9px 6px;font-size:11px;gap:7px}body.mango-has-sidebar{padding-left:150px}.mango-has-sidebar .app-shell,.mango-has-sidebar.listening-page main{margin:8px 9px 22px;padding:15px}.mango-resizable-columns{grid-template-columns:minmax(0,var(--mango-split,var(--mango-default-left,calc(50% - 8px)))) 8px minmax(0,var(--mango-default-right,1fr))!important;gap:4px!important}.mango-has-sidebar .lp-top .lp-modes{margin-right:0}}
@media(max-width:760px){body.mango-has-sidebar{padding-left:0}.mango-sidebar{position:sticky;inset:auto;top:0;width:auto;display:flex;flex-direction:row;align-items:center;gap:10px;padding:7px 10px;border-right:0;border-bottom:1px solid #dbe5d5;overflow:auto}.mango-brand{padding:0;font-size:12px}.mango-brand-mark{width:24px;height:24px;border-radius:7px;font-size:14px}.mango-brand-name{display:none}.mango-module-tabs{flex-direction:row;gap:4px}.mango-module-tab{padding:6px 8px;font-size:11px;white-space:nowrap}.mango-module-icon{display:none}.mango-sidebar-account{margin:0 0 0 auto;padding:0;border:0;gap:3px;align-items:flex-end}.mango-sidebar-name{font-size:10px}.mango-sidebar-account .quiet-button{font-size:10px;padding:3px 6px;white-space:nowrap}.mango-resizable-columns{grid-template-columns:minmax(0,1fr)!important;gap:12px!important}.mango-column-divider{display:none}.mango-has-sidebar .lp-transcript-panel,.mango-has-sidebar .lp-question-panel{height:var(--mango-user-height,var(--mango-auto-height,55dvh))!important;min-height:300px}.mango-has-sidebar .app-shell,.mango-has-sidebar.listening-page main{padding:12px;margin:8px}.mango-has-sidebar .overview-card{padding:10px;gap:7px}.mango-has-sidebar .overview-card span{font-size:11px}.mango-has-sidebar .progress-overview{grid-template-columns:repeat(2,1fr)}}
@media print{body.mango-has-sidebar{padding-left:0}.mango-sidebar,.mango-column-divider,.mango-height-grip{display:none!important}.mango-resizable-columns{display:block!important}.mango-has-sidebar .lp-transcript-panel,.mango-has-sidebar .lp-question-panel{height:auto!important;overflow:visible}}

.mango-has-sidebar .account-bar a[href='/library/index.html'],.mango-has-sidebar .account-bar a[href='/admin'],.mango-has-sidebar .toplinks a[href$='index.html']{display:none}.mango-sidebar :focus-visible{outline:3px solid #aac897;outline-offset:2px}

.mango-navigation-status{font-size:11px;line-height:1.6;color:#6c7d62;overflow-wrap:anywhere;margin:0 5px}.mango-navigation-status:empty{display:none}.mango-navigation-status[data-state=error]{color:#9f4936}

/* A shared parent-level return action on every page. */
.mango-level-navigation{display:flex;align-items:center;gap:9px;min-height:32px;margin:0 0 11px;line-height:1.4}.mango-back-button{display:inline-flex;align-items:center;gap:6px;min-height:30px;padding:5px 10px;font-size:12px;background:#fff;color:#365e40}.mango-back-button:disabled{cursor:default!important;opacity:.45}.mango-back-caption{font-size:11px;color:#7c8a74;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.login-page .mango-level-navigation{margin-bottom:17px}.mango-level-navigation .mango-back-button:focus-visible{outline:3px solid #b2cfa2;outline-offset:2px}@media(max-width:760px){.mango-level-navigation{margin-bottom:9px;min-height:34px}.mango-back-button{min-height:34px;padding:6px 10px}}@media print{.mango-level-navigation{display:none!important}}

/* Scroll beyond the last line without enlarging the flex scroll window. */
.mango-pane-scroll{overscroll-behavior:contain;scrollbar-gutter:stable;scroll-padding-block:24px var(--mango-scroll-tail,80px)}
.mango-pane-scroll::after{content:"";display:block;clear:both;block-size:var(--mango-scroll-tail,80px);min-block-size:80px;pointer-events:none}
.mango-has-sidebar .lp-question-viewport{flex:1;min-height:0;max-height:none;overflow:auto;overscroll-behavior:contain;scrollbar-gutter:stable;padding:0 0 8px}
.mango-has-sidebar .lp-question-panel .lp-question-viewport #practice-questions{height:auto;min-height:0;max-height:none;flex:none;overflow:visible;scrollbar-gutter:auto}
.mango-has-sidebar .lp-question-panel .lp-question-viewport #practice-questions::after{display:none}
.mango-has-sidebar .lp-question-viewport .lp-question-chips{margin:0 10px;border:1px solid #e5eadd;border-radius:6px;padding:7px;gap:5px}
.mango-has-sidebar .lp-question-viewport .lp-answer-actions{padding:7px 12px}
.mango-has-sidebar .lp-question-viewport .lp-question-navigation{display:block;padding:0;margin:0 10px 8px;border:1px solid #e2e9dd;border-radius:6px;background:#fafcf8}
.mango-has-sidebar .lp-question-navigation-summary{display:flex;align-items:center;gap:7px;min-height:28px;padding:4px 8px;font-size:11px;line-height:18px;cursor:pointer;list-style:none}
.mango-has-sidebar .lp-question-navigation-summary::-webkit-details-marker{display:none}
.mango-has-sidebar .lp-question-navigation-summary::before{content:'▸';flex:none;color:#67825d}
.mango-has-sidebar .lp-question-navigation[open]>.lp-question-navigation-summary::before{content:'▾'}
.mango-has-sidebar .lp-question-navigation-summary .lp-answer-summary{margin-left:auto;min-width:0;font-size:10px;line-height:18px;text-align:right}
.mango-has-sidebar .lp-question-navigation .lp-question-chips{margin:0;border:0;border-top:1px solid #e5eadd;border-radius:0;padding:7px 8px}
@media print{.mango-pane-scroll{overflow:visible!important;max-height:none!important}.mango-pane-scroll::after{display:none}}