:root{color-scheme:light;--ink:#243e59;--muted:#5d7288;--blue:#dceefe;--primary:#315f91;--line:#deE7f0;--bg:#f3f8fc}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 "Segoe UI",Arial,sans-serif}button,a,input{ -webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}button:disabled{cursor:default}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #276eaf;outline-offset:4px}button{transition:background .15s,transform .15s}button:hover:not(:disabled){transform:translateY(-1px)}[hidden]{display:none!important}.shell{max-width:1280px;margin:auto;padding:0 44px}.topbar{display:flex;align-items:center;justify-content:space-between;padding:25px 0;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);font:600 27px Georgia,serif}.brand em{font-weight:400}.monogram{background:#d8eafa;display:grid;place-items:center;width:43px;height:43px;border-radius:14px;font:italic 30px Georgia,serif}.header-note{font-size:14px;color:var(--muted)}.intro{display:flex;justify-content:space-between;align-items:center;padding:42px 0 29px;gap:20px}.eyebrow{color:#526f8d;font-size:13px;letter-spacing:.05em;font-weight:600}h1{font-size:clamp(26px,3vw,38px);line-height:1.4;margin:8px 0 9px;font-weight:650;letter-spacing:-.03em}p{margin:0 0 12px}.intro p{color:var(--muted);margin:0}.date-label{border-left:2px solid #c3d9ee;padding-left:20px;display:grid;gap:4px;font-size:14px;color:var(--muted)}.date-label strong{color:var(--ink);font-size:16px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:30px}.stat{padding:22px 26px;border:1px solid var(--line);border-radius:18px;background:white;display:flex;flex-direction:column;gap:6px}.stat>span:first-child{font-size:14px;color:var(--muted)}.stat>strong{font-size:32px;line-height:1.5;font-weight:600}.stat small{font-size:14px;font-weight:400;color:var(--muted)}.stat-note{font-size:12px;color:var(--muted)}.tiny-track{height:5px;border-radius:10px;background:#edf3f9;margin:10px 0 6px}.tiny-track div{height:100%;background:#8fb6dc;border-radius:10px}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:26px;align-items:start}.lesson-panel{background:white;border:1px solid var(--line);border-radius:22px;overflow:hidden}.tabs{display:flex;gap:24px;padding:0 28px;border-bottom:1px solid var(--line);background:#fbfdff}.tab{border:0;border-bottom:3px solid transparent;background:transparent;color:var(--muted);padding:20px 0 16px;font-size:15px}.tab.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}#learn-view,#quiz-view{padding:28px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}h2{font-size:21px;margin:5px 0 0;line-height:1.6}.pill{background:#edf5fd;color:#4e7196;border-radius:30px;padding:5px 10px;font-size:12px;white-space:nowrap}.section-help{font-size:14px;color:var(--muted);margin:12px 0 23px}.word-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.word-card{position:relative;border:1px solid var(--line);border-radius:14px;padding:15px 17px;display:grid;grid-template-columns:1fr 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solid #cddff0;border-radius:20px;padding:25px}.progress-card h2{font-size:20px}.progress-number{display:flex;flex-direction:column;margin:22px 0 15px}.progress-number strong{font-size:48px;line-height:1.1;font-weight:500;letter-spacing:-2px}.progress-number span{font-size:13px;color:var(--muted);margin-top:10px}progress{display:block;width:100%;height:7px;border:0;border-radius:10px;overflow:hidden;background:#c6ddf1}progress::-webkit-progress-bar{background:#c6ddf1}progress::-webkit-progress-value{background:#527da8}progress::-moz-progress-bar{background:#527da8}.progress-meta{display:flex;justify-content:space-between;font-size:12px;margin-top:9px}.divider{height:1px;background:#c4d9ed;margin:24px 0 19px}.progress-card p{font-size:14px}.muted{color:var(--muted);font-size:13px!important}.history-card{padding:22px 8px}.history-card h2{font-size:16px;margin:0 0 15px}.history-row{display:flex;justify-content:space-between;gap:8px;padding:11px 0;border-bottom:1px solid var(--line);font-size:13px}.empty-history{color:var(--muted);font-size:14px}.save-note{font-size:12px;color:var(--muted);padding:0 8px}footer{display:flex;justify-content:space-between;gap:16px;border-top:1px solid var(--line);margin-top:40px;padding:22px 0;color:var(--muted);font-size:12px}footer>span:first-child{font-family:Georgia,serif;font-size:17px}.quiz-heading{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:14px}.quiz-word{font-size:42px;margin:20px 0;font-weight:600;line-height:1.4}.answers{display:grid;grid-template-columns:1fr 1fr;gap:12px}.answer{text-align:left;background:white;color:var(--ink);border:1px solid #cbdbea;border-radius:12px;padding:17px}.answer:disabled{opacity:1;color:var(--ink)}.answer.correct{border-color:#48866b;background:#e9f5ed}.answer.incorrect{border-color:#b35b64;background:#fff0f1}.feedback{margin:20px 0 15px;padding:15px;background:#eef5fc;border-radius:12px;min-height:58px}.quiz-actions{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap}.result{padding:28px 0}.result-score{font-size:68px;line-height:1.3;letter-spacing:-3px;color:var(--primary)}.review-list{padding-left:22px;font-size:15px}.review-list li{margin:7px 0}.warning{background:#fff4db;border:1px solid #dcc58c;border-radius:10px;padding:16px;margin-top:20px;font-size:14px}@media(max-width:1000px){.shell{padding:0 24px}.workspace{grid-template-columns:minmax(0,1fr) 250px;gap:18px}.word-grid{grid-template-columns:1fr}.stat{padding:18px}.header-note{display:none}.lesson-footer{align-items:flex-start;flex-direction:column}}@media(max-width:720px){.shell{padding:0 16px}.intro{padding:28px 0 22px;align-items:flex-start;flex-direction:column}.date-label{border:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}.stats{gap:10px;grid-template-columns:1fr;margin-bottom:20px}.stat{padding:15px 19px;gap:2px}.stat>strong{font-size:26px}.workspace{grid-template-columns:1fr}.word-grid{grid-template-columns:1fr 1fr}#learn-view,#quiz-view{padding:20px}.tabs{padding:0 20px}.pill{display:none}.answers{grid-template-columns:1fr}.progress-number{margin:15px 0}footer{flex-direction:column}.section-heading{align-items:flex-start}.quiz-word{font-size:34px}}@media(max-width:420px){.word-grid{grid-template-columns:1fr}.tabs{gap:20px}.tab{font-size:14px}}
.learn-label,.stat-note,.save-note{font-size:14px}
.pronunciation{grid-column:1/-1;display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-top:10px}.pronounce-button{border:1px solid #bed6ec;background:#edf5fd;color:#315f91;border-radius:8px;padding:7px 12px;min-height:40px;font-size:14px}.pronounce-button:hover:not(:disabled){background:#dceefe}.pronounce-button:disabled{opacity:.65}.pronounce-status{font-size:14px;color:#5d7288}.pronounce-status:empty{display:none}#quiz-content>.pronunciation{margin:-8px 0 22px}.review-list .pronunciation{margin:5px 0 12px}