@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Inter+Tight:wght@500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap";:root{--da-bg: #0a0610;--da-bg-2: #170a18;--da-walnut: #5a3422;--da-flame: #f6c15e;--da-cream: #f4e7c8;--da-velvet: #1a0820;--da-glass: rgba(244,231,200,.04);--da-line: rgba(244,231,200,.1);--da-text: #f4e7c8;--da-text-mute: rgba(244,231,200,.62);--da-text-quiet: rgba(244,231,200,.38);--da-display: "Inter Tight", system-ui, sans-serif;--da-body: "Inter", system-ui, sans-serif;--da-mono: "JetBrains Mono", ui-monospace, monospace}body{background:var(--da-bg);color:var(--da-text);font-family:var(--da-body)}.da{max-width:920px;margin:0 auto;padding:32px 22px 80px}.da__top{padding:24px 0 36px;border-bottom:1px solid var(--da-line);margin-bottom:32px}.da__top-l{margin-bottom:22px}.da__kicker{font-family:var(--da-mono);font-size:11px;letter-spacing:.6px;color:var(--da-flame);text-transform:uppercase;margin:0 0 12px}.da__title{font-family:var(--da-display);font-weight:800;font-size:clamp(36px,5.5vw,60px);line-height:1;letter-spacing:-.02em;margin:0 0 14px;color:var(--da-text)}.da__sub{font-family:var(--da-body);font-size:15px;color:var(--da-text-mute);max-width:680px;line-height:1.6;margin:0}.da__nav{display:flex;gap:8px;flex-wrap:wrap}.da__nav-link{background:var(--da-glass);border:1px solid var(--da-line);color:var(--da-text);padding:7px 14px;border-radius:999px;font-family:var(--da-mono);font-size:11.5px;letter-spacing:.3px;text-decoration:none;transition:background .18s ease,border-color .18s ease}.da__nav-link:hover{background:#f4e7c81a;border-color:var(--da-flame)}.da__nav-link--alt{color:var(--da-flame)}.da__lesson{padding:36px 0 44px;border-bottom:1px solid var(--da-line);scroll-margin-top:16px}.da__lesson:last-of-type{border-bottom:0}.da__teacher{display:flex;gap:18px;align-items:center;margin-bottom:22px}.da__teacher-portrait{width:76px;height:76px;border-radius:50%;background:linear-gradient(135deg,var(--tc, var(--da-walnut)) 0%,var(--da-velvet) 100%);display:grid;place-items:center;flex-shrink:0;box-shadow:0 8px 24px #0000006b}.da__teacher-portrait img{width:78%;image-rendering:pixelated;filter:drop-shadow(0 4px 8px rgba(0,0,0,.4))}.da__lesson-num{font-family:var(--da-mono);font-size:10px;letter-spacing:.6px;color:var(--da-text-quiet);text-transform:uppercase;margin:0 0 4px}.da__lesson-title{font-family:var(--da-display);font-weight:800;font-size:clamp(24px,3.4vw,34px);line-height:1.1;letter-spacing:-.015em;margin:0;color:var(--da-text)}.da__lesson-body{padding:0}.da__lesson-text{font-family:var(--da-body);font-size:15px;color:var(--da-text-mute);line-height:1.65;margin:0 0 14px}.da__lesson-text strong{color:var(--da-text);font-weight:600}.da__lesson-text em{color:var(--da-flame);font-style:normal}.da__panel{background:linear-gradient(180deg,var(--da-glass),transparent);border:1px solid var(--da-line);border-radius:12px;padding:22px;margin:22px 0;display:grid;grid-template-columns:1fr 1.2fr;gap:22px}@media(max-width:720px){.da__panel{grid-template-columns:1fr}}.da__controls{display:flex;flex-direction:column;gap:12px}.da__btn{background:var(--da-flame);color:var(--da-velvet);border:0;padding:11px 18px;border-radius:8px;font-family:var(--da-display);font-weight:700;font-size:13.5px;cursor:pointer;align-self:flex-start;transition:transform .15s ease,background .15s ease}.da__btn:hover{transform:scale(1.04);background:#ffd58a}.da__btn--playing{background:var(--da-cream)}.da__row{display:grid;grid-template-columns:80px 1fr 130px;gap:10px;align-items:center}.da__row-l{font-family:var(--da-mono);font-size:10px;color:var(--da-text-quiet);letter-spacing:.5px;text-transform:uppercase}.da__row-r{font-family:var(--da-mono);font-size:11px;color:var(--da-text);text-align:right}.da__slider{-webkit-appearance:none;appearance:none;width:100%;height:4px;background:#f4e7c829;border-radius:2px;outline:0;cursor:pointer}.da__slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:14px;height:14px;border-radius:50%;background:var(--da-flame);cursor:pointer}.da__slider::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--da-flame);cursor:pointer;border:0}.da__slider:focus-visible::-webkit-slider-thumb{outline:2px solid var(--da-flame);outline-offset:3px;box-shadow:0 0 0 4px #f6c15e33}.da__slider:focus-visible::-moz-range-thumb{outline:2px solid var(--da-flame);outline-offset:3px;box-shadow:0 0 0 4px #f6c15e33}.da__btn:focus-visible{outline:2px solid var(--da-flame);outline-offset:2px}.da__check input:focus-visible{outline:2px solid var(--da-flame);outline-offset:2px}.da__select{background:#0006;color:var(--da-text);border:1px solid var(--da-line);border-radius:6px;padding:8px 12px;font-family:var(--da-body);font-size:13px;outline:0;cursor:pointer;grid-column:2 / span 2}.da__select:focus-visible{outline:2px solid var(--da-flame);outline-offset:1px}.da__check{font-family:var(--da-mono);font-size:11px;color:var(--da-text-mute);display:flex;align-items:center;gap:8px;cursor:pointer}.da__check input{accent-color:var(--da-flame)}.da__hint{font-family:var(--da-mono);font-size:10.5px;color:var(--da-text-quiet);margin:0;padding:6px 0;border-top:1px dashed var(--da-line)}.da__viz{background:#0000004d;border:1px solid var(--da-line);border-radius:8px;padding:14px}.da__viz-label{font-family:var(--da-mono);font-size:10px;color:var(--da-text-quiet);letter-spacing:.5px;text-transform:uppercase;margin:0 0 10px}.da__scope{width:100%;height:auto;display:block;background:#050208;border-radius:4px}.da__lr-meters{display:grid;grid-template-rows:1fr 1fr;gap:10px;padding:8px 0}.da__lr-meter{display:grid;grid-template-columns:24px 1fr;gap:10px;align-items:center}.da__lr-meter>span{font-family:var(--da-mono);font-size:12px;color:var(--da-flame);text-align:center}.da__lr-track{height:18px;background:#f4e7c81a;border-radius:3px;overflow:hidden}.da__lr-fill{height:100%;background:linear-gradient(90deg,var(--da-flame),var(--da-cream));width:0%;transition:width .06s linear}.da__try{background:#f6c15e14;border-left:3px solid var(--da-flame);padding:14px 18px;border-radius:0 6px 6px 0;font-family:var(--da-body);font-size:14px;color:var(--da-text-mute);line-height:1.55;margin:18px 0 0}.da__try em{color:var(--da-flame);font-style:normal;font-weight:600}.da__foot{padding:36px 0 0;border-top:1px solid var(--da-line);margin-top:36px;font-family:var(--da-mono);font-size:11px;color:var(--da-text-quiet);line-height:1.7;text-align:center}.da__foot a{color:var(--da-flame);text-decoration:none}.da__foot a:hover{text-decoration:underline}.da__foot-credit{margin-top:14px;font-size:10.5px;color:var(--da-text-quiet)}