:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg-color:#121214;--panel-bg:#1a1a1e80;--border-color:#ffffff14;--text-main:#e2e8f0;--text-muted:#94a3b8;--text-primary:#e2e8f0;--text-secondary:#94a3b8;--card-bg:#1a1a1ed9;--dropdown-bg:#1a1a1e;--dropdown-text:#e2e8f0;--accent-color:#38bdf8;--accent-glow:#38bdf833;--error-color:#ef4444;--error-bg:#ef44441a;--font-mono:"JetBrains Mono", "Fira Code", "Courier New", Courier, monospace;--font-sans:"Outfit", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--transition-speed:.25s}[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg-color:#121214;--panel-bg:#1a1a1ea6;--border-color:#ffffff14;--text-main:#e2e8f0;--text-muted:#94a3b8;--text-primary:#e2e8f0;--text-secondary:#94a3b8;--card-bg:#1a1a1ed9;--dropdown-bg:#1a1a1e;--dropdown-text:#e2e8f0;--accent-color:#38bdf8;--accent-glow:#38bdf833;--error-color:#ef4444;--error-bg:#ef44441a}[data-theme=cyberpunk]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg-color:#0f051d;--panel-bg:#1b082ba6;--border-color:#f43f5e33;--text-main:#f3f4f6;--text-muted:#c4b5fd;--text-primary:#f3f4f6;--text-secondary:#c4b5fd;--card-bg:#1b082be6;--dropdown-bg:#1b082b;--dropdown-text:#f3f4f6;--accent-color:#f43f5e;--accent-glow:#f43f5e40;--error-color:#0ff;--error-bg:#00ffff1a}[data-theme=retro]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg-color:#0a0f0d;--panel-bg:#0a140fb3;--border-color:#0f63;--text-main:#0f6;--text-muted:#4ade80;--text-primary:#0f6;--text-secondary:#4ade80;--card-bg:#0a140fe6;--dropdown-bg:#0a140f;--dropdown-text:#0f6;--accent-color:#0f6;--accent-glow:#00ff6640;--error-color:#f30;--error-bg:#ff33001a}[data-theme=sakura]{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg-color:#fff5f7;--panel-bg:#ffffffe6;--border-color:#f472b64d;--text-main:#3b0764;--text-muted:#831843;--text-primary:#3b0764;--text-secondary:#831843;--card-bg:#fffffffa;--dropdown-bg:#fff;--dropdown-text:#3b0764;--accent-color:#ec4899;--accent-glow:#ec489940;--error-color:#e11d48;--error-bg:#e11d4814}[data-theme=forest]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg-color:#0c1510;--panel-bg:#102017b3;--border-color:#34d39938;--text-main:#ecfdf5;--text-muted:#6ee7b7;--text-primary:#ecfdf5;--text-secondary:#6ee7b7;--card-bg:#102017eb;--dropdown-bg:#102419;--dropdown-text:#ecfdf5;--accent-color:#34d399;--accent-glow:#34d39940;--error-color:#f87171;--error-bg:#f871711a}[data-theme=nord]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg-color:#0b1320;--panel-bg:#0f1c2eb3;--border-color:#38bdf838;--text-main:#f0fdfa;--text-muted:#5eead4;--text-primary:#f0fdfa;--text-secondary:#5eead4;--card-bg:#0f1c2eeb;--dropdown-bg:#0f2035;--dropdown-text:#f0fdfa;--accent-color:#38bdf8;--accent-glow:#38bdf840;--error-color:#f87171;--error-bg:#f871711a}body{background-color:var(--bg-color);color:var(--text-main);font-family:var(--font-sans);transition:background-color var(--transition-speed) ease, color var(--transition-speed) ease;flex-direction:column;min-height:100vh;margin:0;padding:0;display:flex}.fast-hand-wrapper{box-sizing:border-box;flex-direction:column;width:100%;padding-top:68px;transition:opacity .2s ease-in-out;display:flex;opacity:1!important}.typing-viewport-section{box-sizing:border-box;flex-direction:column;justify-content:center;align-items:center;width:100%;min-height:calc(100dvh - 68px);padding:1.25rem .75rem;display:flex}.fast-hand-container{flex-direction:column;gap:.85rem;width:100%;max-width:950px;display:flex}.hero-header-section{text-align:center;margin-bottom:1.5rem}.hero-header-badge{background:var(--accent-glow);border:1px solid var(--accent-color);color:var(--accent-color);letter-spacing:.04em;text-transform:uppercase;border-radius:9999px;align-items:center;gap:.4rem;margin-bottom:.75rem;padding:.35rem .85rem;font-size:.8rem;font-weight:700;display:inline-flex}.seo-hero-title{letter-spacing:-.03em;color:var(--text-main);margin:0 0 .5rem;font-size:2.3rem;font-weight:800;line-height:1.2}.seo-hero-title span{color:var(--accent-color);text-shadow:0 0 20px var(--accent-glow)}.seo-hero-subtitle{color:var(--text-muted);max-width:680px;margin:0 auto;font-size:1rem;line-height:1.5}.app-header{opacity:1;flex-wrap:nowrap;justify-content:center;align-items:center;gap:.35rem;width:100%;max-height:80px;margin-bottom:.35rem;transition:all .35s cubic-bezier(.16,1,.3,1);display:flex;transform:translateY(0)}.app-header.header-collapsed{opacity:0;pointer-events:none;visibility:hidden;max-height:0;margin-bottom:0;overflow:hidden;transform:translateY(-16px)}.header-restore-pill-btn{background:var(--panel-bg);border:1px solid var(--border-color);color:var(--text-muted);font-family:var(--font-sans);cursor:pointer;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);transition:all var(--transition-speed) ease;z-index:15;border-radius:20px;align-self:center;margin:0 auto .4rem;padding:.28rem .85rem;font-size:.78rem;font-weight:600;display:none;box-shadow:0 4px 15px #0003}.header-restore-pill-btn:hover{color:var(--text-main);border-color:var(--accent-color);box-shadow:0 0 12px var(--accent-glow);transform:translateY(1px)}.header-restore-pill-btn.visible{align-items:center;gap:.35rem;animation:.3s cubic-bezier(.16,1,.3,1) fadeInDown;display:inline-flex}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.controls-pill{background-color:var(--panel-bg);border:1px solid var(--border-color);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);white-space:nowrap;border-radius:20px;flex-shrink:0;align-items:center;gap:.2rem;padding:.2rem .35rem;display:inline-flex}.control-btn{color:var(--text-muted);font-family:var(--font-sans);cursor:pointer;transition:all var(--transition-speed) ease;white-space:nowrap;background:0 0;border:none;border-radius:14px;flex-shrink:0;align-items:center;gap:.3rem;padding:.28rem .55rem;font-size:.76rem;font-weight:600;display:inline-flex}.control-btn:hover{color:var(--text-main)}.control-btn.active{background-color:var(--accent-color);box-shadow:0 3px 12px var(--accent-glow);color:var(--bg-color)!important}.typing-card{background-color:var(--panel-bg);border:1px solid var(--border-color);-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);border-radius:18px;align-items:center;min-height:145px;padding:1rem 1.4rem;transition:min-height .3s cubic-bezier(.16,1,.3,1),padding .3s cubic-bezier(.16,1,.3,1),box-shadow .3s;display:flex;position:relative;overflow:hidden;box-shadow:0 8px 25px #0000002e}.words-container{font-family:var(--font-mono);color:var(--text-muted);-webkit-user-select:none;user-select:none;scroll-behavior:smooth;scrollbar-width:thin;scrollbar-color:var(--border-color) transparent;flex-wrap:wrap;align-content:flex-start;width:100%;height:120px;font-size:1.55rem;line-height:2.45rem;transition:height .3s cubic-bezier(.16,1,.3,1),font-size .2s,line-height .2s;display:flex;position:relative;overflow-y:auto}.words-container::-webkit-scrollbar{width:4px}.words-container::-webkit-scrollbar-thumb{background-color:var(--border-color);border-radius:4px}.word{white-space:nowrap;margin-bottom:.35rem;margin-right:.65rem;display:inline-block;position:relative}.letter{transition:color .1s;position:relative}.letter.correct{color:var(--text-main)}.letter.incorrect{color:var(--error-color);border-bottom:2px solid var(--error-color)}.word.active{border-bottom:2px dashed var(--accent-color)}.caret-cursor{background-color:var(--accent-color);width:2px;height:1.75rem;box-shadow:0 0 8px var(--accent-color);pointer-events:none;will-change:opacity, left, top;transition:all 80ms cubic-bezier(.19,1,.22,1);animation:1s infinite alternate caretPulse;position:absolute;top:.25rem;left:0;transform:translateZ(0)}.fast-hand-container.keyboard-off .typing-card{border-radius:22px;min-height:290px;padding:1.6rem 2rem;box-shadow:0 14px 40px #00000047}.fast-hand-container.keyboard-off .words-container{height:250px;font-size:1.75rem;line-height:2.85rem}.fast-hand-container.keyboard-off .word{margin-bottom:.45rem;margin-right:.75rem}.fast-hand-container.keyboard-off .caret-cursor{height:2.05rem;top:.3rem}@keyframes caretPulse{0%,30%{opacity:1}70%,to{opacity:0}}.hidden-input{opacity:0;pointer-events:none;position:absolute;left:-9999px}.focus-prompt{-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);color:var(--text-main);cursor:pointer;z-index:10;opacity:1;background:#0006;border-radius:20px;justify-content:center;align-items:center;font-size:1.1rem;font-weight:500;transition:opacity .3s;display:flex;position:absolute;inset:0}.focus-prompt.hidden{opacity:0;pointer-events:none}.stats-banner{align-items:center;gap:1.5rem;display:flex}.stat-pill{font-family:var(--font-mono);color:var(--text-muted);font-size:1.3rem;font-weight:700}.stat-pill span{color:var(--accent-color)}.results-modal{background-color:var(--panel-bg);border:1px solid var(--border-color);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:24px;flex-direction:column;gap:2rem;padding:3rem;display:none;box-shadow:0 15px 40px #0000004d}.results-modal.active{animation:.4s cubic-bezier(.19,1,.22,1) modalSlide;display:flex}@keyframes modalSlide{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.results-grid{grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:1.5rem;display:grid}.result-card{border:1px solid var(--border-color);text-align:center;background:#ffffff05;border-radius:16px;flex-direction:column;gap:.5rem;padding:1.5rem;display:flex}.result-card .label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:.85rem;font-weight:600}.result-card .val{font-family:var(--font-mono);color:var(--accent-color);font-size:2.5rem;font-weight:800}.chart-container{border:1px solid var(--border-color);background:#00000026;border-radius:16px;padding:1.5rem}.chart-title{color:var(--text-muted);margin-bottom:1rem;font-size:.9rem;font-weight:600}.chart-svg{width:100%;height:180px}.chart-line{stroke:var(--accent-color);stroke-width:3px;fill:none;stroke-linecap:round;stroke-linejoin:round}.chart-area{fill:url(#chart-gradient);opacity:.12}.chart-grid{stroke:var(--border-color);stroke-width:1px;stroke-dasharray:4}.chart-dot{fill:var(--bg-color);stroke:var(--accent-color);stroke-width:2.5px;r:4;transition:r .15s}.chart-dot:hover{r:6}.actions-row{justify-content:flex-end;gap:1rem;display:flex}.btn-restart{background-color:var(--text-main);color:var(--bg-color);font-family:var(--font-sans);cursor:pointer;transition:all var(--transition-speed) ease;border:none;border-radius:30px;padding:.75rem 2rem;font-size:.95rem;font-weight:700;box-shadow:0 4px 15px #ffffff0d}.btn-restart:hover{opacity:.92;transform:translateY(-1px)}.btn-restart.btn-secondary{color:var(--text-main);border:1px solid var(--border-color);background-color:#0000}.btn-restart.btn-secondary:hover{background-color:var(--border-color)}.sound-toggle-btn{border:1px solid var(--border-color);cursor:pointer;width:32px;height:32px;color:var(--text-muted);transition:all var(--transition-speed) ease;background:0 0;border-radius:50%;justify-content:center;align-items:center;display:flex}.sound-toggle-btn:hover,.sound-toggle-btn.active{color:var(--accent-color);border-color:var(--accent-color);box-shadow:0 0 10px var(--accent-glow)}.header-collapse-toggle-btn:hover{color:var(--accent-color);border-color:var(--accent-color);transform:translateY(-1px)}.tip-section{color:var(--text-muted);justify-content:center;align-items:center;gap:.5rem;font-size:.82rem;font-weight:500;display:flex}.key-kbd{font-family:var(--font-mono);background-color:var(--panel-bg);border:1px solid var(--border-color);color:var(--text-main);border-radius:4px;padding:.12rem .38rem;font-size:.72rem}.header-controls-group{flex-wrap:nowrap;justify-content:center;align-items:center;gap:.35rem;max-width:100%;display:flex}#lesson-selector-pill{white-space:nowrap;flex-shrink:0;align-items:center;gap:.3rem;padding:.2rem .45rem;display:inline-flex}.system-controls{background-color:var(--panel-bg);border:1px solid var(--border-color);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);white-space:nowrap;border-radius:20px;flex-shrink:0;align-items:center;gap:.3rem;padding:.2rem .45rem;display:inline-flex}select,.theme-select{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;background-color:var(--dropdown-bg,#1a1a1e);border:1px solid var(--border-color);color:var(--text-main);font-family:var(--font-sans);cursor:pointer;transition:all var(--transition-speed) ease;border-radius:12px;outline:none;flex-shrink:0;padding:.24rem .5rem;font-size:.76rem;font-weight:600}#lesson-select{max-width:175px}#theme-selector{max-width:110px}[data-theme=sakura] select,[data-theme=sakura] .theme-select{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;color:#4a3e43;background-color:#fff}.theme-select:hover,.theme-select:focus{color:var(--accent-color);border-color:var(--accent-color);box-shadow:0 0 8px var(--accent-glow)}select option,.theme-select option,option{font-family:var(--font-sans);padding:.5rem .75rem;font-size:.82rem;font-weight:500;background-color:var(--dropdown-bg,#1a1a1e)!important;color:var(--dropdown-text,#e2e8f0)!important}[data-theme=dark] select option,[data-theme=dark] .theme-select option,[data-theme=dark] option{color:#e2e8f0!important;background-color:#1a1a1e!important}[data-theme=cyberpunk] select option,[data-theme=cyberpunk] .theme-select option,[data-theme=cyberpunk] option{color:#f3f4f6!important;background-color:#1b082b!important}[data-theme=retro] select option,[data-theme=retro] .theme-select option,[data-theme=retro] option{color:#0f6!important;background-color:#0a140f!important}[data-theme=sakura] select option,[data-theme=sakura] .theme-select option,[data-theme=sakura] option{color:#4a3e43!important;background-color:#fff!important}[data-theme=forest] select option,[data-theme=forest] .theme-select option,[data-theme=forest] option{color:#ecfdf5!important;background-color:#102419!important}[data-theme=nord] select option,[data-theme=nord] .theme-select option,[data-theme=nord] option{color:#f0fdfa!important;background-color:#0f2035!important}.keyboard-container{background-color:var(--panel-bg);border:1px solid var(--border-color);-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);border-radius:20px;flex-direction:column;gap:.75rem;margin-top:0;padding:.85rem 1.15rem 1rem;display:flex;box-shadow:0 8px 25px #0000001f}.keyboard-controls{color:var(--text-muted);justify-content:space-between;align-items:center;padding:0 .25rem;font-size:.85rem;display:flex}.keyboard-style-toggle-container{border:1px solid var(--border-color);background:#00000026;border-radius:12px;gap:.4rem;padding:.25rem;display:flex}.kbd-style-btn{color:var(--text-muted);font-family:var(--font-sans);cursor:pointer;transition:all var(--transition-speed) ease;background:0 0;border:none;border-radius:8px;padding:.3rem .75rem;font-size:.75rem;font-weight:600}.kbd-style-btn.active{background-color:var(--accent-color);box-shadow:0 2px 8px var(--accent-glow);color:var(--bg-color)!important}.virtual-keyboard{-webkit-user-select:none;user-select:none;flex-direction:column;gap:.35rem;width:100%;max-width:820px;margin:0 auto;display:flex}.keyboard-row{justify-content:space-between;gap:.35rem;width:100%;display:flex}.key{border:1px solid var(--border-color);height:40px;color:var(--text-muted);cursor:pointer;box-sizing:border-box;background:#ffffff05;border-radius:6px;flex:1;justify-content:center;align-items:center;font-weight:600;transition:all 80ms cubic-bezier(.19,1,.22,1);display:flex;position:relative}.key .mac-label,.key .win-label{pointer-events:none}.virtual-keyboard.macbook .key{font-family:var(--font-sans);text-transform:lowercase;background:#00000038;border-color:#ffffff0d;border-radius:6px;font-size:.8rem}.virtual-keyboard.macbook .mac-label{display:block}.virtual-keyboard.macbook .win-label{display:none}.virtual-keyboard.windows .key{font-family:var(--font-mono);text-transform:uppercase;background:#ffffff05;border-radius:2px;font-size:.9rem}.virtual-keyboard.windows .mac-label{display:none}.virtual-keyboard.windows .win-label{display:block}.key[data-code=Backspace]{flex:2.1}.key[data-code=Tab],.key[data-code=Backslash]{flex:1.5}.key[data-code=CapsLock]{flex:1.85}.key[data-code=Enter]{flex:2.25}.key[data-code=ShiftLeft]{flex:2.4}.key[data-code=ShiftRight]{flex:2.6}.key[data-code=Space]{flex:8.5}.key[data-code=ControlLeft],.key[data-code=ControlRight]{flex:1.4}.key[data-code=MetaLeft],.key[data-code=MetaRight],.key[data-code=AltLeft],.key[data-code=AltRight]{flex:1.25}.key.pressed{box-shadow:0 0 12px var(--accent-color);transform:scale(.95);background-color:var(--accent-color)!important;color:var(--bg-color)!important;border-color:var(--accent-color)!important}[data-theme=sakura] .virtual-keyboard .key,[data-theme=sakura] .virtual-keyboard.macbook .key,[data-theme=sakura] .virtual-keyboard.windows .key{box-shadow:0 2px 5px #f472b61f;color:#701a75!important;background:#fff!important;border:1px solid #f472b659!important}[data-theme=sakura] .virtual-keyboard .key:hover{box-shadow:0 0 8px #ec489940;color:#831843!important;border-color:#ec4899!important}[data-theme=sakura] .virtual-keyboard .key.pressed{box-shadow:0 0 14px #ec489980;color:#fff!important;background-color:#ec4899!important;border-color:#ec4899!important}[data-theme=sakura] .virtual-keyboard .key.target{box-shadow:0 0 10px #ec48994d;color:#ec4899!important;background-color:#ec489924!important;border-color:#ec4899!important}[data-theme=sakura] .keyboard-style-toggle-container{background:#f472b61f;border-color:#f472b64d}[data-theme=sakura] .kbd-style-btn{color:#831843}[data-theme=sakura] .kbd-style-btn.active{background-color:#ec4899;color:#fff!important}[data-theme=sakura] .controls-pill,[data-theme=sakura] .system-controls{background-color:#fffffff2;border-color:#f472b64d;box-shadow:0 4px 15px #f472b61a}[data-theme=sakura] .control-btn{color:#831843}[data-theme=sakura] .control-btn:hover{color:#3b0764}[data-theme=sakura] .control-btn.active{background-color:#ec4899;box-shadow:0 3px 12px #ec489959;color:#fff!important}[data-theme=sakura] .sound-toggle-btn{color:#831843}[data-theme=sakura] .sound-toggle-btn:hover{color:#ec4899;background:#f472b626}[data-theme=sakura] .sound-toggle-btn.active{color:#ec4899}[data-theme=sakura] .key-kbd{color:#831843;background-color:#fff;border-color:#f472b666;box-shadow:0 1px 3px #f472b626}[data-theme=sakura] .focus-prompt{color:#3b0764;background:#fff5f7bf}[data-theme=sakura] .keyboard-container,[data-theme=sakura] .typing-card{box-shadow:0 10px 32px #f472b61f}[data-theme=sakura] .slider{background-color:#f472b64d}[data-theme=sakura] .slider:before{background-color:#831843}[data-theme=sakura] .toggle-switch input:checked+.slider:before{background-color:#fff}[data-theme=sakura] .seo-guide-wrapper{background:#f472b60d}[data-theme=sakura] .seo-section-block{background:#ffffffe6;border-color:#f472b640;box-shadow:0 6px 20px #f472b60f}[data-theme=sakura] .seo-feature-card,[data-theme=sakura] .benchmark-table-wrapper,[data-theme=sakura] 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