:root{--blue:#0c57c8;--green:#17955b;--purple:#7438a8;--yellow:#f5b400;--red:#d93d42;--ink:#17233b;--muted:#62708a;--paper:#f4f7fc;--line:#dce4f1;--shadow:0 16px 45px rgba(24,46,89,.11)}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.b1 button,.b1 input,.b1 textarea{font:inherit}.shell{min-height:100vh;display:grid;grid-template-columns:280px 1fr}.sidebar{position:sticky;top:0;height:100vh;overflow:auto;background:#10234c;color:#fff;padding:28px 20px}.brand{font-size:27px;font-weight:900;letter-spacing:-1px}.brand span{color:#4bd594}.brandbox p{margin:10px 0 2px;font-weight:800}.brandbox small{color:#bac8e6}.path{margin:24px 0;padding:16px;border-radius:14px;background:rgba(255,255,255,.08)}.path b,.path span{display:block}.path span{font-size:12px;color:#bac8e6;margin-top:4px}.nav-label{text-transform:uppercase;letter-spacing:.12em;color:#8fa7d7;font-size:11px;font-weight:800;margin:23px 8px 8px}.nav button{width:100%;border:0;background:transparent;color:#eaf0ff;text-align:left;padding:12px;border-radius:12px;cursor:pointer;display:flex;gap:11px;align-items:center}.nav button:hover,.nav button.active{background:#fff;color:#10234c}.marker{background:var(--green);color:white;border-radius:8px;padding:5px;font-size:11px;font-weight:900}.workspace{min-width:0}.toolbar{height:62px;display:flex;justify-content:flex-end;align-items:center;gap:10px;padding:0 4vw;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}.toolbar button,.btn{border:1px solid var(--line);background:#fff;padding:9px 13px;border-radius:10px;cursor:pointer;font-weight:750}.toolbar .active,.btn.primary{background:var(--blue);color:#fff;border-color:var(--blue)}.menu{display:none}.hero{margin:34px 4vw 20px;padding:34px;display:flex;justify-content:space-between;align-items:center;border-radius:24px;color:#fff;background:linear-gradient(125deg,#0b4fb8,#14336f 62%,#672d9b);box-shadow:var(--shadow)}.eyebrow,.meta{text-transform:uppercase;letter-spacing:.12em;font-size:11px;font-weight:900}.hero h1{margin:5px 0 8px;font-size:clamp(29px,4vw,52px);letter-spacing:-.045em}.hero p{max-width:720px;margin:7px 0}.badge{width:120px;height:120px;border-radius:50%;display:grid;place-content:center;text-align:center;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.3)}.badge strong{font-size:42px}.tabs{display:flex;gap:8px;overflow:auto;padding:0 4vw 14px}.tabs button{white-space:nowrap;border:1px solid var(--line);background:#fff;border-radius:999px;padding:10px 17px;font-weight:800;cursor:pointer}.tabs button.active{background:var(--ink);color:#fff}.view{padding:0 4vw 60px}.panel,.part-card,.activity,.support-card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 8px 24px rgba(34,55,90,.06)}.panel{padding:24px}.intro h2{font-size:30px;margin:4px 0}.intro p{color:var(--muted)}.part-grid,.support-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:20px}.part-card{padding:22px;border-top:5px solid var(--blue);cursor:pointer}.part-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.part-card h3{margin:6px 0}.part-card p{color:var(--muted)}.part-nav{display:flex;gap:8px;overflow:auto;margin:18px 0}.part-nav button{border:1px solid var(--line);background:#fff;border-radius:10px;padding:9px 12px;white-space:nowrap;cursor:pointer}.part-nav .active{background:var(--blue);color:#fff}.help{margin:18px 0;border:1px solid #c9d8f4;border-radius:16px;background:#eef5ff}.help summary{padding:17px;font-weight:900;cursor:pointer}.help-body{padding:0 18px 18px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.help-body section{background:#fff;padding:14px;border-radius:12px}.help-body h4{margin:0 0 8px}.help-body p,.help-body li{color:#465675;font-size:14px;line-height:1.55}.activities{display:grid;gap:17px}.activity{padding:22px;border-left:6px solid var(--green)}.activity h3{margin:0 0 10px}.prompt{line-height:1.62}.options{display:grid;gap:8px;margin:15px 0}.option{display:flex;gap:9px;padding:11px;border:1px solid var(--line);border-radius:10px;cursor:pointer}.option:has(input:checked){border-color:var(--blue);background:#eef5ff}.answer,.model,.feedback{display:none;padding:13px;border-radius:10px;margin-top:12px}.show .answer,.show .model,.checked .feedback{display:block}.answer,.model{background:#eaf8f0;border:1px solid #b8e0c9}.feedback{background:#fff6d6;border:1px solid #f2d26c}.writing{width:100%;min-height:150px;border:1px solid var(--line);border-radius:12px;padding:14px;resize:vertical}.tools{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}.wordcount{color:var(--muted);font-size:13px}.phrases{background:#f4effb;border-radius:10px;padding:12px;color:#54337b}.placeholder{border:2px dashed #9cadd0;background:#f8faff;border-radius:16px;padding:20px}.placeholder-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.placeholder-grid div{background:#fff;border:1px dashed #aab8d2;border-radius:10px;padding:15px;color:#5e6d87}.support-card{padding:20px}.support-card h3{margin-top:0}.chips{display:flex;flex-wrap:wrap;gap:7px}.chip{padding:7px 10px;border-radius:999px;background:#eef5ff;color:#174b98;font-size:13px}.exam-link{font-size:12px;color:var(--purple);font-weight:800}.disclaimer{margin-top:28px;padding:17px;border-left:4px solid var(--yellow);background:#fff9dc;font-size:13px}.scrim{display:none}@media(max-width:850px){.shell{display:block}.sidebar{position:fixed;z-index:20;left:0;transform:translateX(-105%);transition:.2s;width:280px}.sidebar.open{transform:none}.scrim{display:block;position:fixed;inset:0;background:#06112699;border:0;z-index:15}.menu{display:block;margin-right:auto}.hero{padding:24px}.badge{display:none}.part-grid,.support-grid,.help-body{grid-template-columns:1fr}}@media(max-width:520px){.hero,.view,.tabs{margin-left:14px;margin-right:14px;padding-left:0;padding-right:0}.hero{padding:22px;margin-top:20px}.toolbar{padding:0 14px}.panel{padding:17px}.placeholder-grid{grid-template-columns:1fr}}@media print{.sidebar,.toolbar,.tabs,.part-nav,.tools{display:none!important}.shell{display:block}.hero{margin:0 0 15px}.view{padding:0}.activity{break-inside:avoid}.answer,.model{display:block}}
.b1-writing-cloud{margin:24px 0;padding:22px;border:1px solid #b8d6ee;border-radius:18px;background:#f3f9ff;display:grid;grid-template-columns:minmax(220px,1fr) minmax(180px,.5fr) minmax(220px,.7fr);gap:16px;align-items:end}.b1-writing-cloud label{font-weight:800;color:#153b66}.b1-writing-cloud input{display:block;width:100%;box-sizing:border-box;margin-top:7px;padding:12px;border:1px solid #aac5dc;border-radius:10px;font:inherit}.b1-assessment-caveat{font-size:.88rem;color:#516579}.b1-writing-cloud .b1-assessment-caveat{grid-column:1/-1;margin:0}.b1-assessment-example{margin:18px 0;padding:16px 18px;border:1px solid #c9dbeb;border-radius:16px;background:#fff}.b1-assessment-example summary{font-weight:900;cursor:pointer;color:#124b88}.b1-assessment-example summary span{float:right}.b1-example-response{white-space:pre-line;padding:16px;border-radius:12px;background:#f6f8fb;line-height:1.65}.b1-assessment-bands{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:14px 0}.b1-assessment-bands span{padding:10px;border-radius:10px;background:#eaf4ff;text-align:center}.b1-assessment-bands b{display:block;font-size:.78rem}.b1-submission-tools{margin-top:18px;padding-top:16px;border-top:1px solid #d6e2ec}.b1-submission-actions{display:flex;flex-wrap:wrap;gap:10px}.b1-save{background:#f2c400!important;color:#17365b!important}.b1-load{background:#1764bf!important;color:#fff!important}.b1-submission-status{margin:12px 0 0;font-weight:750}.b1-submission-status.is-error{color:#c62828}.b1-submission-status.is-success{color:#087a4b}.b1-estimated-result{margin-top:18px;padding:18px;border:1px solid #afd4c3;border-radius:16px;background:#f4fbf7}.b1-result-head{display:flex;justify-content:space-between;align-items:center}.b1-result-head h3{font-size:2rem;margin:3px 0}.b1-result-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.b1-result-grid article{padding:14px;border:1px solid #cfe4d9;border-radius:12px;background:#fff}.b1-result-grid h4{display:flex;justify-content:space-between}.b1-result-grid p{font-size:.92rem}@media(max-width:800px){.b1-writing-cloud,.b1-result-grid{grid-template-columns:1fr}.b1-assessment-bands{grid-template-columns:repeat(2,1fr)}}

/* Complete B1 Listening course */
.listening-route{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:28px 0}.listening-part-card{display:grid;grid-template-columns:64px 1fr;text-align:left;align-items:center;gap:4px 16px;padding:22px;border:1px solid #d9e1ee;border-radius:18px;background:#fff;color:#17324d;cursor:pointer;box-shadow:0 8px 22px rgba(25,50,80,.07)}.listening-part-card:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(25,50,80,.12)}.listening-part-card>span{grid-row:1/3;width:58px;height:58px;display:grid;place-items:center;border-radius:16px;background:#1256b8;color:#fff;font-size:26px;font-weight:800}.listening-part-card b{font-size:18px}.listening-part-card small{color:#607086}.listening-part-card.p2>span{background:#16866a}.listening-part-card.p3>span{background:#7b3fb3}.listening-part-card.p4>span{background:#c46a16}.back-listening{border:0;background:none;color:#1256b8;font-weight:800;padding:0;margin-bottom:20px;cursor:pointer}.audio-studio{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:20px 22px;margin:20px 0 26px;border-radius:16px;background:linear-gradient(135deg,#102f55,#175d98);color:#fff}.audio-studio p{margin:5px 0 0;color:#dcecff}.audio-studio audio{width:min(420px,50%)}.question-sheet{padding:26px;border:2px solid #25313f;border-radius:18px;margin-bottom:22px;background:#fff}.question-sheet h3{text-align:center;font-size:25px}.sheet-instruction{font-weight:800;color:#17233b!important}.question-sheet>div{white-space:pre-wrap;line-height:2.6;font-size:17px}.inline-gap{display:inline-flex;align-items:center;gap:6px;white-space:nowrap;margin:0 3px}.inline-gap b{font-size:16px}.inline-gap input{width:155px;border:0;border-bottom:3px dotted #536274;background:#f8fafc;padding:5px 7px;font:inherit}.inline-gap i{font-size:11px;font-style:normal;font-weight:800}.inline-gap.correct i{color:#16804f}.inline-gap.checked:not(.correct) i{color:#b14a26}.transcript-panel div,.support-panel div{white-space:pre-wrap;line-height:1.65}.listening-question{position:relative}.situation{color:#5f6f82;font-style:italic}.listening-question .feedback{display:none;margin-top:14px;padding:12px;border-radius:10px;background:#fff1e8;color:#9b4213}.listening-question.checked .feedback{display:block}.listening-question.correct .feedback{background:#e8f7ef;color:#12643e}.picture-options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:18px}.picture-option{cursor:pointer}.picture-option input{position:absolute;opacity:0;pointer-events:none}.picture-square{aspect-ratio:1/1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:9px;padding:14px;border:2px dashed #a8b6c9;border-radius:14px;background:linear-gradient(145deg,#fbfdff,#eef3f8);text-align:center;transition:.15s}.picture-square b{font-size:25px;color:#1256b8}.picture-square i{font-size:10px;letter-spacing:.12em;color:#8090a2}.picture-square em{font-style:normal;font-size:13px;line-height:1.35;color:#34475b}.picture-option input:checked+.picture-square{border-style:solid;border-color:#1256b8;box-shadow:0 0 0 3px rgba(18,86,184,.15);background:#edf5ff}.listening-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:24px 0}.listening-score{font-weight:800;color:#17324d}.transcript-panel,.support-panel{margin:14px 0;border:1px solid #d9e1ee;border-radius:14px;background:#fff;overflow:hidden}.transcript-panel summary,.support-panel summary{padding:18px 20px;font-weight:800;cursor:pointer}.transcript-panel div,.support-panel div{padding:18px 20px 22px;border-top:1px solid #e7ecf3}.support-panel{border-color:#d9c9eb;background:#fdfaff}.support-panel summary{color:#68359b}@media(max-width:760px){.listening-route{grid-template-columns:1fr}.picture-options{grid-template-columns:1fr}.picture-square{aspect-ratio:auto;min-height:190px}.audio-studio{align-items:stretch;flex-direction:column}.audio-studio audio{width:100%}.question-sheet>div{line-height:2.2}.inline-gap input{width:120px}}