.al-player{position:relative}.al-overlay{pointer-events:none;border-radius:14px;width:100%;position:absolute;top:0;left:0;overflow:hidden}.al-player .quiz{color:#1f1e1c;z-index:5;background:#fff;border-radius:14px;padding:14px;position:absolute;bottom:31%;left:6%;right:6%;box-shadow:0 10px 30px #0003}.al-player .quiz-options{grid-template-columns:1fr 1fr;gap:8px;display:grid}.al-player .quiz-options button{color:inherit;cursor:pointer;background:0 0;border:1px solid #ddd6c9;border-radius:10px;padding:12px;font:600 18px Inter,sans-serif}.al-player .quiz-options button.right{color:#fff;background:#2e8b57;border-color:#2e8b57}.al-player .quiz-options button.wrong{color:#fff;background:#c0392b;border-color:#c0392b}:root{--bg:#f5f1ea;--card:#fff;--ink:#1f1e1c;--muted:#6e6a62;--accent:#d9663f;--line:#e3ddd2;--blue:#2f6bd8}@media (prefers-color-scheme:dark){:root{--bg:#171614;--card:#23211e;--ink:#eceae5;--muted:#a8a399;--line:#3a3732}}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);margin:0;font-family:Inter,Noto Sans Sinhala,system-ui,sans-serif}[lang=si]{font-family:Noto Sans Sinhala,Inter,sans-serif}button{font:inherit;color:inherit}.home,.lesson{max-width:480px;margin:0 auto;padding:16px 16px 48px}.top{justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;display:flex}.top h1{margin:0;font-size:22px}.stats{gap:12px;font-size:14px;font-weight:600;display:flex}.subject h2{margin:8px 0;font-size:18px}.unit{background:var(--card);border:1px solid var(--line);border-radius:16px;margin-bottom:16px;padding:16px}.unit h3{color:var(--muted);margin:0 0 12px;font-size:15px}.path{gap:10px;margin:0;padding:0;list-style:none;display:grid}.node{text-align:left;border:1px solid var(--line);cursor:pointer;background:0 0;border-radius:14px;align-items:center;gap:12px;width:100%;padding:12px;display:flex}.node .num{background:var(--accent);color:#fff;border-radius:50%;flex:none;place-items:center;width:36px;height:36px;font-weight:700;display:grid}.node .name{flex:1;font-weight:600}.node.locked{cursor:default;opacity:.55}.node.locked .num{background:var(--muted)}.node .soon{color:var(--muted);font-size:12px}.lesson-top{align-items:center;gap:12px;margin-bottom:12px;display:flex}.lesson-top h1{margin:0;font-size:16px}.close{border:1px solid var(--line);background:var(--card);cursor:pointer;border-radius:50%;width:36px;height:36px}.muted{color:var(--muted)}.error{color:#c0392b}.done{background:var(--card);border:1px solid var(--line);text-align:center;border-radius:16px;margin-top:16px;padding:16px}.done button{background:var(--accent);color:#fff;cursor:pointer;border:0;border-radius:999px;margin-top:8px;padding:10px 16px;font-weight:600}