.letter-details[data-v-5e4b5854]{width:min(520px,100vw - 64px);inset:var(--details-top) 0 auto;max-height:calc(100dvh - var(--details-top) - 16px);border:1px solid var(--line);background:var(--surface);color:var(--ink);opacity:0;transition:opacity .2s var(--ease),transform .2s var(--ease),display .2s allow-discrete,overlay .2s allow-discrete;border-radius:10px;margin:0 auto;padding:16px 18px;position:fixed;overflow:auto;transform:translateY(8px)scale(.97);box-shadow:0 24px 90px #0004}.letter-details[data-v-5e4b5854]:popover-open{opacity:1;transform:translateY(0)scale(1)}@starting-style{.letter-details[data-v-5e4b5854]:popover-open{opacity:0;transform:translateY(8px)scale(.97)}}.letter-details-header[data-v-5e4b5854]{justify-content:space-between;align-items:center;gap:10px;display:flex}.letter-details-header h2[data-v-5e4b5854]{align-items:center;gap:10px;margin:0;font-size:14px;display:flex}.letter-details-key[data-v-5e4b5854]{background:var(--accent-soft);width:28px;height:30px;color:var(--accent);border-radius:7px;place-items:center;font:18px ui-monospace,monospace;display:grid}.letter-details-key[data-state=mastered][data-v-5e4b5854]{color:var(--correct)}.letter-details-close[data-v-5e4b5854]{color:var(--muted);background:0 0;border-radius:6px;padding:3px 7px;font-size:22px;line-height:1}.letter-details-state[data-v-5e4b5854]{color:var(--muted);margin:6px 0 12px;font-size:12px}.letter-details-metrics[data-v-5e4b5854]{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px 14px;margin:0;display:grid}.letter-details-metrics dt[data-v-5e4b5854]{color:var(--muted);font-size:11px}.letter-details-metrics dd[data-v-5e4b5854]{font-variant-numeric:tabular-nums;margin:3px 0 0;font-size:16px}.letter-details-metrics small[data-v-5e4b5854]{color:var(--muted);font-size:11px}.letter-details-metrics .positive[data-v-5e4b5854]{color:var(--correct)}.letter-details-metrics .negative[data-v-5e4b5854]{color:var(--error)}.letter-details-chart[data-v-5e4b5854]{margin:12px 0 8px}.letter-details-chart svg[data-v-5e4b5854]{width:100%;height:160px;display:block;overflow:visible}.letter-details-chart text[data-v-5e4b5854]{fill:var(--muted);font:14px system-ui,sans-serif}.letter-chart-grid line[data-v-5e4b5854]{stroke:var(--line);stroke-width:1px}.letter-chart-target[data-v-5e4b5854]{stroke:var(--accent);stroke-dasharray:5 5;stroke-width:1px;opacity:.6}.letter-chart-line[data-v-5e4b5854]{fill:none;stroke:var(--correct);stroke-width:2px;stroke-linejoin:round}.letter-chart-point[data-v-5e4b5854]{fill:var(--correct)}.letter-details-chart figcaption[data-v-5e4b5854],.letter-details-explanation[data-v-5e4b5854]{color:var(--muted);font-size:11px;line-height:1.7}.letter-details-empty[data-v-5e4b5854]{color:var(--muted);text-align:center;margin:16px 0;padding:12px 0;font-size:13px}.letter-details-table[data-v-5e4b5854]{margin:8px 0 0;font-size:12px}.letter-details-table summary[data-v-5e4b5854]{cursor:pointer;color:var(--accent)}.letter-details-table table[data-v-5e4b5854]{margin-top:8px}.letter-details-table th[data-v-5e4b5854],.letter-details-table td[data-v-5e4b5854]{padding:6px 4px}.letter-details-explanation[data-v-5e4b5854]{margin:8px 0 0}@media (hover:hover) and (pointer:fine){.letter-details-close[data-v-5e4b5854]:hover{background:var(--soft);color:var(--ink)}}@media (prefers-reduced-motion:reduce){.letter-details[data-v-5e4b5854]{transition:none;transform:none}}.endless-viewport[data-v-3a0d035f]{height:64px}.endless-text[data-v-3a0d035f]{height:100%;transition:none}.endless-text .endless-glyph[data-v-3a0d035f]{white-space:pre;width:1ch;position:absolute;inset-inline-start:calc(22% + var(--glyph-offset) * 1ch)}.endless-glyph.current[data-v-3a0d035f]{border-bottom:2px solid}.endless-actions[data-v-3a0d035f]{color:var(--muted);flex-wrap:wrap;justify-content:center;align-items:center;gap:12px;margin-top:12px;display:flex}.backup-settings[data-v-1b40d45c]{gap:12px}.backup-settings>p[data-v-1b40d45c],.backup-actions[data-v-1b40d45c],.backup-preview[data-v-1b40d45c]{grid-column:1/-1}.backup-settings p[data-v-1b40d45c]{color:var(--muted);margin:0;font-size:12px;line-height:1.7}.backup-actions[data-v-1b40d45c]{flex-wrap:wrap;gap:12px;display:flex}.backup-preview[data-v-1b40d45c]{border-left:2px solid var(--accent);gap:10px;padding:4px 0 4px 16px;font-size:12px;display:grid}.backup-settings .backup-error[data-v-1b40d45c]{color:var(--error)}.backup-preview-enter-active[data-v-1b40d45c],.backup-preview-leave-active[data-v-1b40d45c]{transition:opacity .16s var(--ease),transform .16s var(--ease)}.backup-preview-enter-from[data-v-1b40d45c],.backup-preview-leave-to[data-v-1b40d45c]{opacity:0;transform:translateY(4px)}@media (prefers-reduced-motion:reduce){.backup-preview-enter-active[data-v-1b40d45c],.backup-preview-leave-active[data-v-1b40d45c]{transition:none}}:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f5f5f7;--surface:#fff;--soft:#eeedf2;--ink:#24242b;--muted:#757582;--line:#dedde5;--accent:#7862c4;--accent-soft:#eee9fa;--correct:#367561;--error:#bd465d;--ease:cubic-bezier(.23,1,.32,1);background:var(--bg);color:var(--ink);font-synthesis:none;text-rendering:optimizelegibility;font:100%/1.5 system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}html[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#18191e;--surface:#202127;--soft:#272830;--ink:#ebebf2;--muted:#a4a3b3;--line:#34353f;--accent:#b4a1f2;--accent-soft:#393148;--correct:#85c9ae;--error:#f493a4}html[data-theme=pink]{--bg:#fbf2f6;--surface:#fff9fc;--soft:#f9edf3;--ink:#462c3c;--muted:#947184;--line:#ead3df;--accent:#bc5b91;--accent-soft:#f6deeb;--correct:#427c63;--error:#be405d}html[data-theme=solarized]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#002b36;--surface:#073642;--soft:#0b3d48;--ink:#eee8d5;--muted:#93a1a1;--line:#194854;--accent:#b58900;--accent-soft:#46452c;--correct:#859900;--error:#dc5962}@media (prefers-color-scheme:dark){html[data-theme=system]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#18191e;--surface:#202127;--soft:#272830;--ink:#ebebf2;--muted:#a4a3b3;--line:#34353f;--accent:#b4a1f2;--accent-soft:#393148;--correct:#85c9ae;--error:#f493a4}}*{box-sizing:border-box}body{-webkit-user-select:none;user-select:none;min-width:960px;margin:0}input,textarea,select,[contenteditable=true]{-webkit-user-select:text;user-select:text}button,select,textarea{font:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button,select{cursor:pointer}a{color:inherit;text-decoration:none}button{border:0}button:disabled{cursor:default}:focus-visible{outline:2px solid var(--accent);outline-offset:4px}.sr-only{clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.app-shell{flex-direction:column;max-width:1160px;min-height:100dvh;margin:auto;padding:0 40px;display:flex}.site-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:28px;padding:26px 0;display:flex}.brand{letter-spacing:-.6px;flex-shrink:0;align-items:center;gap:12px;font-size:21px;font-weight:650;display:flex}.brand small{color:var(--muted);letter-spacing:.45px;margin-top:1px;font-size:10px;font-weight:450;display:block}.brand-mark{background:var(--accent);width:38px;height:38px;color:var(--surface);border-radius:11px;place-items:center;padding-bottom:5px;font-size:28px;font-weight:550;line-height:1;display:grid}nav{color:var(--muted);align-items:center;gap:26px;font-size:13px;display:flex}nav a{transition:color .14s var(--ease);padding:10px 0;position:relative}nav a.is-active{color:var(--ink);font-weight:600}nav a.is-active:after{content:"";background:var(--accent);height:2px;position:absolute;bottom:0;left:0;right:0}main{flex:1;width:100%;min-width:0;position:relative}.page-intro{margin:48px 0 30px}.eyebrow{color:var(--accent);letter-spacing:2px;text-transform:uppercase;margin:0 0 14px;font-size:10px;font-weight:700}h1{letter-spacing:-1.4px;margin:0 0 14px;font-size:clamp(28px,4vw,40px);font-weight:570;line-height:1.15}h2{letter-spacing:-.35px;font-size:16px;font-weight:580}.intro-text{color:var(--muted);max-width:640px;margin:0;font-size:13px;line-height:1.8}.practice-page{max-width:1000px;margin:0 auto;padding:38px 0 8px}.practice-topline{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;display:flex}.letter-strip{flex-wrap:wrap;gap:5px;font:13px ui-monospace,SFMono-Regular,Consolas,monospace;display:flex}.letter-strip span{text-align:center;border-bottom:2px solid #0000;min-width:20px}.letter-strip button{width:100%;color:inherit;font:inherit;background:0 0;border-radius:3px;padding:4px 1px;display:block}.letter-strip button:hover{background:var(--accent-soft)}.letter-strip [data-state=locked]{color:var(--muted);opacity:.4}.letter-strip [data-state=unassessed]{color:var(--ink);border-color:var(--line)}.letter-strip [data-state=learning]{color:var(--accent);border-color:var(--accent)}.letter-strip [data-state=mastered]{color:var(--correct);border-color:var(--correct)}.letter-strip [data-state=recovery]{color:var(--error);border-color:var(--error)}.session-status{color:var(--muted);white-space:nowrap;font-size:11px}.text-stage{cursor:text;margin:38px 0 30px;position:relative}.text-viewport{height:96px;font:30px/48px ui-monospace,SFMono-Regular,Consolas,monospace;position:relative;overflow:hidden}.practice-text{font:inherit;letter-spacing:-.7px;word-spacing:0;color:var(--muted);white-space:pre-wrap;transition:transform .16s var(--ease);-webkit-user-select:none;user-select:none;margin:0;position:relative}.practice-word{white-space:pre;display:inline-block}.typing-cursor{transform-origin:0 0;background:var(--accent);pointer-events:none;width:1px;height:2px;position:absolute;top:0;left:0}.pseudo-marker{color:var(--muted);font-size:10px;position:absolute;top:-24px;right:0}.practice-text span{position:static}.practice-text .correct{color:var(--ink)}.practice-text .wrong{color:var(--error);background:color-mix(in srgb,var(--error) 12%,transparent);text-underline-offset:5px;-webkit-text-decoration:underline wavy;text-decoration:underline wavy;text-decoration-thickness:1px}.practice-text .current{color:var(--accent)}.practice-text .current.wrong{color:var(--error)}.typing-capture{opacity:0;resize:none;border:0;width:1px;height:1px;padding:0;font-size:16px;position:absolute;top:0;left:0}.keyboard-guide{-webkit-user-select:none;user-select:none;max-width:820px;margin:10px auto 0}.keyboard-row{gap:6px;margin-bottom:6px;display:flex}.keyboard-key{border:1px solid var(--line);background:var(--surface);min-width:0;height:43px;color:var(--muted);border-bottom-width:2px;border-radius:6px;flex:1;justify-content:center;align-items:center;font:14px ui-monospace,SFMono-Regular,Consolas,monospace;display:flex;position:relative}.keyboard-key.key-wide{flex:1.5}.keyboard-key.key-space{flex:7}.keyboard-key.key-control{font-size:10px}.keyboard-key.key-home:after{content:"";opacity:.4;background:currentColor;width:9px;height:2px;position:absolute;bottom:6px}.keyboard-key[data-state=locked]{color:color-mix(in srgb,var(--muted) 48%,var(--bg));border-color:color-mix(in srgb,var(--line) 60%,var(--bg));background:0 0}.keyboard-key[data-state=locked]:before{content:"🔒";filter:grayscale();opacity:.5;font-size:6px;position:absolute;top:2px;right:3px}.keyboard-key[data-state=unassessed]{color:var(--ink)}.keyboard-key[data-state=learning]{color:var(--accent)}.keyboard-key[data-state=mastered]{color:var(--correct)}.keyboard-key[data-state=recovery]{color:var(--error)}.keyboard-key[data-target=true]{color:var(--accent);border-color:var(--accent);background:var(--accent-soft)}.keyboard-key[data-pressed=true]{color:var(--surface);border-color:var(--accent);background:var(--accent)}.input-help,.save-status{color:var(--muted);margin:7px 0 0;font-size:11px}.input-help.warning{color:var(--error)}.primary-button,.secondary-button{border-radius:7px;justify-content:center;align-items:center;gap:16px;padding:10px 16px;font-size:12px;font-weight:550;display:inline-flex}.primary-button{background:var(--accent);color:var(--surface)}.secondary-button{background:var(--accent-soft);color:var(--accent)}.text-button{color:var(--muted);text-underline-offset:4px;background:0 0;padding:6px 0;font-size:11px;text-decoration:underline}.notice{color:var(--error);border-left:2px solid var(--error);padding:12px 16px;font-size:12px}.save-notice{margin:20px 0}.save-notice strong{margin-bottom:6px;display:block}.empty-state{border-top:1px solid var(--line);text-align:center;color:var(--muted);padding:50px 0;font-size:13px}.empty-state>span{color:var(--accent);font-size:30px;display:block}.empty-state .primary-button{margin-top:15px}.history-table-wrap{overflow:auto}table{border-collapse:collapse;text-align:left;white-space:nowrap;width:100%}th{color:var(--muted);padding:17px 18px;font-size:10px;font-weight:550}td{border-top:1px solid var(--line);padding:20px 18px;font-size:12px}td strong{font-weight:500}td small{color:var(--muted);margin-top:4px;font-size:9px;display:block}.history-outcome{color:var(--muted);font-size:10px}.help-grid{grid-template-columns:1fr 1fr;gap:20px 44px;display:grid}.help-card{border-top:1px solid var(--line);padding:20px 0}.help-number{color:var(--accent);font-size:10px}.help-card p{color:var(--muted);font-size:12px;line-height:1.9}.settings-page{max-width:720px;margin:0 auto;padding-bottom:30px}.settings-form{gap:32px;display:grid}.settings-section{border:0;border-top:1px solid var(--line);grid-template-columns:1fr 1fr;gap:20px;margin:0;padding:22px 0 0;display:grid}.settings-section h2,.settings-section legend{grid-column:1/-1;margin:0;padding:0;font-size:15px;font-weight:580}.settings-form label{color:var(--muted);flex-direction:column;gap:8px;font-size:12px;display:flex}.settings-form select{border:1px solid var(--line);background:var(--surface);width:100%;color:var(--ink);border-radius:7px;padding:11px 12px;font-size:13px}.settings-help{color:var(--muted);margin:20px 0;font-size:11px}@media (hover:hover) and (pointer:fine){nav a:hover,.text-button:hover{color:var(--accent)}.primary-button:hover{background:color-mix(in srgb,var(--accent) 90%,var(--ink))}}@media (width<=850px){.app-shell{padding:0 24px}.site-header{gap:16px}nav{gap:20px}.practice-topline{gap:10px}.session-status{margin-left:auto}.page-intro{margin-top:36px}}@media (width<=600px){.app-shell{padding:0 16px}.site-header{flex-wrap:wrap;gap:14px;padding:20px 0 12px}.brand{gap:9px;font-size:19px}.brand-mark{border-radius:9px;width:32px;height:32px;font-size:25px}.brand small{font-size:8px}nav{justify-content:space-between;gap:10px;width:100%;font-size:12px}.practice-page{padding-top:25px}.letter-strip{gap:3px;font-size:12px}.letter-strip span{min-width:17px}.text-stage{margin:28px 0 20px}.practice-text{font-size:25px;line-height:1.75}.session-stats{gap:8px 16px;padding-bottom:22px;font-size:10px}.session-stats strong{font-size:12px}.keyboard-row{gap:3px;margin-bottom:4px}.keyboard-key{border-radius:4px;height:34px;font-size:11px}.keyboard-key.key-control{font-size:7px}.keyboard-key.key-home:after{width:6px;bottom:4px}.practice-hints{margin-top:20px}.input-help,.save-status{font-size:10px}.help-grid,.settings-section{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.completed-stats{color:var(--muted);font-variant-numeric:tabular-nums;grid-template-columns:126px 120px 150px minmax(160px,1fr);align-items:baseline;gap:24px;margin-bottom:18px;font-size:12px;display:grid}.completed-stats strong{color:var(--ink);font-weight:550}.stats-caption{text-transform:uppercase;letter-spacing:1px;font-size:10px}.letter-strip button[data-change]{animation:letter-evidence .24s var(--ease)}.letter-strip button[data-change=unlocked],.letter-strip button[data-change=mastered]{animation:letter-unlock .24s var(--ease)}.page-enter-active{animation:page-in .18s var(--ease)}.page-leave-active{pointer-events:none;animation:page-out .1s var(--ease);position:absolute;top:0;left:0;right:0}@keyframes page-in{0%{opacity:0}to{opacity:1}}@keyframes page-out{to{opacity:0}}@keyframes letter-evidence{0%{opacity:.78}to{opacity:1}}@keyframes letter-unlock{0%{opacity:.7;background:var(--accent-soft)}to{opacity:1;background:0 0}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.typing-cursor.is-moving{transition:transform .1s var(--ease)}.text-stage[data-focused=false] .typing-cursor{opacity:0}.typing-prompt{height:18px;color:var(--accent);white-space:nowrap;margin:0;font-size:11px;line-height:18px;position:absolute;top:-24px;left:0}.text-stage[data-focused=false] .typing-prompt{color:var(--ink)}