:root{color-scheme:dark;--bg:#090b10;--panel:#12151d;--panel2:#171b25;--line:#252a36;--text:#f1f2f5;--muted:#9ba3b4;--mint:#c8ff5f;--teal:#66e9cc;--gold:#efc878;--purple:#b4a0ff;--red:#ff939e;--side:222px;font-family:Inter,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.6}
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h2{font-size:23px;font-weight:600}.heading-suffix{font-size:12px;color:var(--muted);font-weight:400;margin-left:15px}.map-progress{font-size:11px;color:var(--muted);display:flex;align-items:center;gap:7px}.map-progress>span:first-child{font-family:monospace;color:#e5eadf;font-size:13px}.map-progress-bar{width:80px;height:4px;background:#333a42;border-radius:4px;overflow:hidden;margin-left:8px}.map-progress-bar i{display:block;background:var(--mint);height:100%;width:0}.map-toolbar{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-bottom:21px;border-bottom:1px solid var(--line);padding-bottom:13px}.filters{display:flex;gap:8px;flex-wrap:wrap}.filter{font-size:12px;border:1px solid transparent;padding:5px 13px;color:var(--muted);border-radius:5px}.filter.active{color:var(--mint);background:#c8ff5f0a;border-color:#c8ff5f25}.filter:hover{color:white}.unlock-note{display:flex;align-items:center;gap:6px;color:#a2aabd;font-size:10px;white-space:nowrap}.unlock-note svg{width:12px;height:12px}.lesson-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.lesson-card{position:relative;text-align:left;border:1px solid var(--line);border-radius:10px;min-height:206px;padding:20px;background:linear-gradient(140deg,#171b24,#11141b);transition:transform .2s,border-color .2s;display:flex;flex-direction:column}.lesson-card:hover{transform:translateY(-3px);border-color:#747b8c}.lesson-card.unlocked{border-color:#c8ff5f65;background:radial-gradient(ellipse at 0 0,#c8ff5f0c,transparent 80%),#141920}.lesson-card.completed{border-color:#66e9cc40}.lesson-card.locked{background:linear-gradient(140deg,#151821,#101319)}.lesson-card-top{display:flex;justify-content:space-between;align-items:center}.lesson-icon{width:41px;height:41px;display:grid;place-items:center;background:#ffffff04;border:1px solid #ffffff10;border-radius:9px}.lesson-icon.gold{background:#efc8780b;border-color:#efc87828}.lesson-icon.mint{background:#66e9cc08;border-color:#66e9cc24}.lesson-icon.purple{background:#b4a0ff0c;border-color:#b4a0ff24}.lesson-state{font-size:10px;color:#a1aabd;display:flex;gap:5px;align-items:center}.lesson-state svg{width:13px;height:13px}.unlocked .lesson-state{color:var(--mint)}.completed .lesson-state{color:var(--teal)}.lesson-num{font-family:monospace;font-size:9px;letter-spacing:1.5px;color:#99a4b7;margin-top:20px}.lesson-card h3{font-size:17px;font-weight:600;margin-top:5px;line-height:1.6}.lesson-card>p{font-size:11px;color:var(--muted);margin-top:5px}.lesson-card-footer{display:flex;align-items:center;gap:7px;margin-top:auto;padding-top:16px}.lesson-card-footer>span{font-size:9px;padding:1px 6px;background:#ffffff03;border:1px solid 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h2{font-size:24px;margin:9px 0}.community-banner p{font-size:12px;line-height:1.9;color:#b3af9f}.gold-button{background:var(--gold);color:#211b10;font-size:13px}.community-action{display:flex;flex-direction:column;align-items:center;gap:12px}.community-action>span{font-size:10px;color:#b6ab91}footer{display:flex;align-items:center;gap:18px;border-top:1px solid var(--line);margin-top:32px;padding:23px 0 28px;color:#a5adbe}footer p{font-size:10px;flex:1}.footer-brand{font-family:monospace;font-size:10px;letter-spacing:1px;font-weight:600;white-space:nowrap}.footer-brand span{font-family:inherit;font-size:9px;color:#a7adbc;margin-left:5px}.muted{color:#b2bacb;font-size:10px}.toast{position:fixed;bottom:26px;left:calc(50% + var(--side)/2);transform:translateX(-50%) translateY(25px);padding:12px 20px;background:#252d22;color:#e5f5cd;border:1px solid #839c5a;border-radius:8px;font-size:13px;opacity:0;pointer-events:none;transition:opacity .2s,transform 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dialog{padding:0;border:1px solid #3a4455;border-radius:17px;background:#10141c;color:var(--text);width:760px;max-width:calc(100vw - 32px);max-height:calc(100dvh - 48px);box-shadow:0 30px 100px #0009}dialog::backdrop{background:#03050bd1;backdrop-filter:blur(8px)}.dialog-shell{display:flex;flex-direction:column}.dialog-header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:19px 26px;border-bottom:1px solid var(--line)}.dialog-brand{font-family:monospace;font-size:13px;color:var(--mint);font-weight:700;letter-spacing:1px}.dialog-brand span{color:var(--muted);font-size:10px;margin-left:18px;letter-spacing:.5px}.dialog-header h2{font-size:20px}.lesson-stepper{display:flex;justify-content:space-between;padding:21px 30px 0;gap:9px}.step{flex:1;font-size:10px;color:#96a2b6;display:flex;align-items:center;gap:7px;border-top:2px solid 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