:root{--ink:#193e38;--green:#246655;--cream:#f6f5ed;--muted:#70817a}*{box-sizing:border-box}body{margin:0;background:var(--cream);color:var(--ink);font:16px system-ui,sans-serif}button,select,textarea{font:inherit}button{cursor:pointer;border:1px solid #d7dfd8;border-radius:10px;background:white;padding:11px 16px;color:var(--ink)}button:hover{background:#e5ede5}button:focus-visible{outline:3px solid #d29648}header{height:82px;padding:0 32px;background:#fff;border-bottom:1px solid #e0e5dd;display:flex;align-items:center;justify-content:space-between}.brand{font:700 24px Georgia,serif}.brand small{font:11px system-ui;display:block;letter-spacing:2px;margin-top:4px;color:var(--muted)}.badge{background:#edf2e8;border-radius:30px;padding:8px 12px;font-size:12px} .layout{display:grid;grid-template-columns:272px 1fr;min-height:calc(100vh - 82px)}aside{padding:28px 20px;background:#fff;border-right:1px solid #e0e5dd}aside h3{font-size:11px;letter-spacing:2px;color:var(--muted);margin:0 10px 20px}nav button{display:block;text-align:left;width:100%;margin:6px 0;border:0;background:transparent;padding:14px}nav button.active{background:#e9f0e6;color:var(--green);font-weight:700}nav small{display:block;font-size:11px;color:var(--muted);margin:5px 0 0 30px}.asidefoot{padding:20px 10px;font-size:12px;line-height:1.6;color:var(--muted)}main{max-width:1200px;width:100%;padding:32px 42px;margin:0 auto;align-self:start}.topline{display:flex;justify-content:space-between;gap:15px;align-items:center;color:var(--muted);font-size:13px}.eyebrow{text-transform:uppercase;letter-spacing:2px;font-size:11px;color:var(--green);font-weight:700}h1{font:normal 48px Georgia,serif;margin:24px 0 16px} .intro{color:var(--muted);line-height:1.7;max-width:680px} .tabs{display:flex;gap:8px;margin:28px 0 22px;flex-wrap:wrap}.tabs button{background:transparent;border:0}.tabs button.active{background:var(--ink);color:white}.board{background:white;border:1px solid #e0e5dd;border-radius:18px;padding:32px;min-height:340px;position:relative}h2{font:normal 30px Georgia,serif;margin:10px 0 24px} .grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.image-placeholder{height:140px;border:1px dashed #bdc9bd;border-radius:10px;background:#edf0e9;display:flex;align-items:center;justify-content:center;color:#7a897e;font-size:12px;letter-spacing:1px;margin-bottom:18px}.scene-placeholder{height:210px;margin-top:24px}.video-placeholder{min-height:180px;margin-top:24px;flex-direction:column;gap:12px;text-align:center;padding:20px}.video-placeholder span{font-size:30px}.video-placeholder small{letter-spacing:0;max-width:480px;line-height:1.6}.card{padding:22px;background:#f6f7f1;border-radius:12px}.card strong{font:normal 25px Georgia,serif}.pt{color:var(--muted);font-size:14px;margin-top:10px}.sentence{font-size:22px;line-height:1.6;margin:14px 0}.tip{background:#fbf0d9;padding:16px 20px;border-radius:12px;margin-top:20px;font-size:14px;line-height:1.6}.bottom{display:flex;justify-content:space-between;align-items:center;margin-top:20px;gap:12px}.tools{display:flex;gap:8px;flex-wrap:wrap}.primary{background:var(--green);color:white;border:0}.primary:hover{background:#184e40}textarea{width:100%;min-height:160px;padding:18px;border:1px solid #d7dfd8;border-radius:12px;resize:vertical}.hidden{display:none!important}.present aside,.present header,.present .teacher{display:none}.present .layout{display:block}.present main{max-width:1300px}.present h1{font-size:56px}.present .sentence{font-size:30px}.present .board{min-height:470px}.feedback{margin-top:18px;font-weight:600}.q{font-size:24px;margin:25px 0}.options{display:flex;flex-wrap:wrap;gap:12px}footer{font-size:12px;color:var(--muted);margin-top:28px} @media(max-width:800px){header{padding:15px;height:auto}.layout{display:block}aside{border-right:0;padding:14px}aside h3,.asidefoot{display:none}nav{display:flex;overflow:auto}nav button{min-width:160px}main{padding:22px}h1,.present h1{font-size:36px}.grid{grid-template-columns:1fr}.board{padding:22px}.topline{flex-wrap:wrap}.badge{display:none}}@media print{aside,header,.tools,.tabs,.teacher{display:none}.layout{display:block}.board{border:0}main{padding:0}}
.board .dialogue-line{font-size:24pt;line-height:1.5}.present .board .dialogue-line{font-size:24pt;line-height:1.5}#nav button{display:grid;grid-template-columns:34px minmax(0,1fr);column-gap:4px;align-items:start}#nav .class-number{white-space:nowrap}#nav .class-label{min-width:0}#nav small{margin:5px 0 0}.pause-choice{display:block;margin:18px 0;font-size:14px}.dialogue-timeline{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}.timeline-segment{display:flex;gap:4px;flex:1 1 130px}.timeline-segment button:first-child{flex:1;text-align:left;padding:10px;font-size:13px}.timeline-segment button:last-child{padding:8px}.track{display:block;height:5px;background:#e0e7df;border-radius:4px;margin-top:10px;overflow:hidden}.track span{display:block;height:100%;width:0;background:#246655}.practice-question{padding:4px 0 18px;border-bottom:1px solid #e3e8df}.practice-question .q{font-size:21px}.practice-question:last-child{border-bottom:0}.brand{display:flex;flex-direction:column;align-items:flex-start;gap:4px}.brand .hablei-logo{display:block;width:160px;height:auto}.brand small{font:10px system-ui,sans-serif;letter-spacing:.5px;margin:0;color:var(--muted)}header{height:100px}.layout{min-height:calc(100vh - 100px)}
