:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--border:#e5e4e7;--code-bg:#f4f3ec;--accent:#aa3bff;--accent-bg:#aa3bff1a;--accent-border:#aa3bff80;--social-bg:#f4f3ec80;--shadow:#0000001a 0 10px 15px -3px, #0000000d 0 4px 6px -2px;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--heading:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:18px/145% var(--sans);letter-spacing:.18px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}@media (width<=1024px){:root{font-size:16px}}@media (prefers-color-scheme:dark){:root{--text:#9ca3af;--text-h:#f3f4f6;--bg:#16171d;--border:#2e303a;--code-bg:#1f2028;--accent:#c084fc;--accent-bg:#c084fc26;--accent-border:#c084fc80;--social-bg:#2f303a80;--shadow:#0006 0 10px 15px -3px, #00000040 0 4px 6px -2px}#social .button-icon{filter:invert()brightness(2)}}body{margin:0}#root{text-align:center;border-inline:1px solid var(--border);box-sizing:border-box;flex-direction:column;width:1126px;max-width:100%;min-height:100svh;margin:0 auto;display:flex}h1,h2{font-family:var(--heading);color:var(--text-h);font-weight:500}h1{letter-spacing:-1.68px;margin:32px 0;font-size:56px}@media (width<=1024px){h1{margin:20px 0;font-size:36px}}h2{letter-spacing:-.24px;margin:0 0 8px;font-size:24px;line-height:118%}@media (width<=1024px){h2{font-size:20px}}p{margin:0}code{font-family:var(--mono);color:var(--text-h);background:var(--code-bg);border-radius:4px;padding:4px 8px;font-size:15px;line-height:135%;display:inline-flex}.play-button{border:1px solid var(--accent-border);background:var(--accent);color:#fff;min-width:190px;min-height:48px;font:600 16px/1 var(--sans);cursor:pointer;border-radius:6px;transition:border-color .2s,filter .2s,transform .2s}.play-button:hover{filter:brightness(1.05);transform:translateY(-1px)}.play-button:disabled{cursor:not-allowed;opacity:.5;filter:none;transform:none}.play-button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.secondary-button{border:1px solid var(--border);background:var(--social-bg);min-width:120px;min-height:48px;color:var(--text-h);font:600 16px/1 var(--sans);cursor:pointer;border-radius:6px;transition:background .2s,border-color .2s,opacity .2s}.secondary-button:hover:not(:disabled){border-color:var(--accent-border);background:var(--accent-bg)}.secondary-button:disabled{opacity:.45}.secondary-button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.icon-button{border:1px solid var(--border);background:var(--social-bg);width:42px;min-width:42px;height:42px;color:var(--text-h);cursor:pointer;border-radius:6px;justify-content:center;align-items:center;transition:background .2s,border-color .2s;display:inline-flex}.icon-button:hover{border-color:var(--accent-border);background:var(--accent-bg)}.icon-button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.icon-button svg{fill:none;stroke:currentColor;stroke-width:2px;stroke-linecap:round;stroke-linejoin:round;pointer-events:none}.interval-lessons-brand{color:var(--text-h);font-weight:800}.interval-lessons-actions{gap:8px;display:flex}.interval-lessons-button{border:1px solid var(--border);background:var(--social-bg);min-height:42px;color:var(--text-h);box-sizing:border-box;border-radius:6px;justify-content:center;align-items:center;padding:0 13px;font-size:14px;font-weight:800;transition:background .2s,border-color .2s;display:inline-flex}.interval-lessons-button:hover{border-color:var(--accent-border);background:var(--accent-bg)}.interval-lessons-button.primary{border-color:var(--accent-border);background:var(--accent);color:#fff}.temp-error{color:#c2410c;max-width:560px}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (width<=640px){.interval-lessons-actions,.interval-lessons-button{width:100%}}.home-page{box-sizing:border-box;text-align:left;grid-template-rows:auto 1fr;width:min(980px,100%);min-height:100svh;margin:0 auto;display:grid}.home-page a{color:inherit;text-decoration:none}.home-topbar{border-bottom:1px solid var(--border);box-sizing:border-box;align-items:center;min-height:64px;padding:0 24px;display:flex}.home-brand{color:var(--text-h);align-items:center;gap:10px;font-weight:800;display:inline-flex}.home-brand-mark{border:1px solid var(--accent-border);background:var(--accent-bg);width:32px;height:32px;color:var(--accent);font:900 17px/1 var(--mono);border-radius:6px;place-items:center;display:grid}.home-content{box-sizing:border-box;align-content:start;gap:22px;padding:28px 24px;display:grid}.home-head,.home-section,.home-row-text{gap:4px;display:grid}.home-head h1,.home-section h2,.home-row-text h3,.home-head p{margin:0}.home-head h1,.home-section h2,.home-row-text h3{color:var(--text-h);letter-spacing:0}.home-head h1{font-size:28px;font-weight:700;line-height:1.15}.home-head p,.home-row-text span{color:var(--text);font-size:14px;font-weight:600}.home-section{gap:10px}.home-section h2{letter-spacing:.08em;text-transform:uppercase;font-size:13px;font-weight:900;line-height:1.2}.home-row-text{gap:3px;min-width:0}.home-row-text h3{font-size:16px;font-weight:800;line-height:1.2}.home-list,.home-practice-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.home-row{border:1px solid var(--border);background:var(--bg);box-sizing:border-box;border-radius:8px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:14px;min-height:64px;padding:12px 14px;transition:background .2s,border-color .2s;display:grid}.home-row:hover{border-color:var(--accent-border);background:var(--accent-bg)}.home-row:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.home-practice-row{min-height:58px}.home-arrow{border:1px solid var(--border);background:var(--social-bg);width:34px;height:34px;color:var(--text-h);border-radius:6px;place-items:center;display:grid}.home-arrow svg{fill:none;stroke:currentColor;stroke-width:2px;stroke-linecap:round;stroke-linejoin:round;width:18px;height:18px}@media (width<=640px){.home-topbar{padding:0 18px}.home-content{padding:22px 18px}.home-list,.home-practice-list{grid-template-columns:1fr}.home-head h1{font-size:24px}}