@font-face{font-family:Fraunces Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/lernapp-demo/_astro/fraunces-vietnamese-full-normal.7BpKI3vF.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Fraunces Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/lernapp-demo/_astro/fraunces-latin-ext-full-normal.YHFkNujK.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Fraunces Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/lernapp-demo/_astro/fraunces-latin-full-normal.CFFu7zhK.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Atkinson Hyperlegible Next Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/lernapp-demo/_astro/atkinson-hyperlegible-next-latin-ext-wght-normal.C6vrW8VD.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Atkinson Hyperlegible Next Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/lernapp-demo/_astro/atkinson-hyperlegible-next-latin-wght-normal.BcXVPD7q.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/lernapp-demo/_astro/ibm-plex-mono-cyrillic-ext-400-normal.xuaO2J-f.woff2)format("woff2"),url(/lernapp-demo/_astro/ibm-plex-mono-cyrillic-ext-400-normal.DMdlQ8Kv.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/lernapp-demo/_astro/ibm-plex-mono-cyrillic-400-normal.BSMlKf0J.woff2)format("woff2"),url(/lernapp-demo/_astro/ibm-plex-mono-cyrillic-400-normal.CEL4l2ZJ.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/lernapp-demo/_astro/ibm-plex-mono-vietnamese-400-normal.BulugwFq.woff2)format("woff2"),url(/lernapp-demo/_astro/ibm-plex-mono-vietnamese-400-normal.DDuiU_S-.woff)format("woff");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/lernapp-demo/_astro/ibm-plex-mono-latin-ext-400-normal.BmRBH3aV.woff2)format("woff2"),url(/lernapp-demo/_astro/ibm-plex-mono-latin-ext-400-normal.D3D2R8hC.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/lernapp-demo/_astro/ibm-plex-mono-latin-400-normal.DMJ8VG8y.woff2)format("woff2"),url(/lernapp-demo/_astro/ibm-plex-mono-latin-400-normal.CvHOgSBP.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:600;src:url(/lernapp-demo/_astro/ibm-plex-mono-cyrillic-ext-600-normal.V-xxqcpd.woff2)format("woff2"),url(/lernapp-demo/_astro/ibm-plex-mono-cyrillic-ext-600-normal.9HEixskS.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:600;src:url(/lernapp-demo/_astro/ibm-plex-mono-cyrillic-600-normal.CTOM6hUh.woff2)format("woff2"),url(/lernapp-demo/_astro/ibm-plex-mono-cyrillic-600-normal.fLZuRloM.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:600;src:url(/lernapp-demo/_astro/ibm-plex-mono-vietnamese-600-normal.D2EvbN8M.woff2)format("woff2"),url(/lernapp-demo/_astro/ibm-plex-mono-vietnamese-600-normal.iLQfcSjf.woff)format("woff");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:600;src:url(/lernapp-demo/_astro/ibm-plex-mono-latin-ext-600-normal.D38SheWl.woff2)format("woff2"),url(/lernapp-demo/_astro/ibm-plex-mono-latin-ext-600-normal.DmB0ttJJ.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:600;src:url(/lernapp-demo/_astro/ibm-plex-mono-latin-600-normal.BgSNZQsw.woff2)format("woff2"),url(/lernapp-demo/_astro/ibm-plex-mono-latin-600-normal.DWFSQ4vo.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--paper:#f5efe3;--paper-2:#fffaf1;--paper-3:#ece3d2;--ink:#1a2240;--ink-soft:#545b78;--ink-faint:#8a8fa6;--kirsch:#d7263d;--kirsch-dark:#a8162b;--kirsch-soft:#fbe1e3;--blau:#2343c4;--blau-soft:#e1e6ff;--gold:#f2b631;--gold-dark:#b98100;--mint:#23875f;--mint-soft:#dcf2e8;--line:#1a224024;--on-accent:#fff;--shadow:0 1px 0 #1a22400f, 0 8px 24px -12px #1a224047;--shadow-lift:0 2px 0 #1a224014, 0 18px 40px -18px #1a224073;--radius:18px;--radius-sm:12px;--display:"Fraunces Variable", "Iowan Old Style", Georgia, serif;--body:"Atkinson Hyperlegible Next Variable", "Segoe UI", system-ui, sans-serif;--mono:"IBM Plex Mono", ui-monospace, "Cascadia Mono", monospace;--nav-h:68px;--safe-b:env(safe-area-inset-bottom,0px);--grain:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.1 0 0 0 0 0.13 0 0 0 0 0.25 0 0 0 .07 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--paper:#11152b;--paper-2:#1a2042;--paper-3:#232a52;--ink:#f4eee3;--ink-soft:#b8bcd2;--ink-faint:#8288a6;--kirsch:#ff5a6c;--kirsch-dark:#ff8492;--kirsch-soft:#3b1b2d;--blau:#8da3ff;--blau-soft:#262f64;--gold:#ffc94d;--gold-dark:#ffd877;--mint:#5fd3a2;--mint-soft:#173a36;--line:#f4eee324;--on-accent:#10142c;--shadow:0 1px 0 #0000004d, 0 10px 26px -12px #000000b3;--shadow-lift:0 2px 0 #0000004d, 0 20px 44px -16px #000c;color-scheme:dark}}:root[data-theme=dark]{--paper:#11152b;--paper-2:#1a2042;--paper-3:#232a52;--ink:#f4eee3;--ink-soft:#b8bcd2;--ink-faint:#8288a6;--kirsch:#ff5a6c;--kirsch-dark:#ff8492;--kirsch-soft:#3b1b2d;--blau:#8da3ff;--blau-soft:#262f64;--gold:#ffc94d;--gold-dark:#ffd877;--mint:#5fd3a2;--mint-soft:#173a36;--line:#f4eee324;--on-accent:#10142c;--shadow:0 1px 0 #0000004d, 0 10px 26px -12px #000000b3;--shadow-lift:0 2px 0 #0000004d, 0 20px 44px -16px #000c;color-scheme:dark}*,:before,:after{box-sizing:border-box}[hidden]{display:none!important}html{-webkit-text-size-adjust:100%;text-size-adjust:100%;background:var(--paper)}body{background:var(--paper) var(--grain);min-height:100dvh;color:var(--ink);font-family:var(--body);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;margin:0;font-size:1.0625rem;line-height:1.55;overflow-x:hidden}h1,h2,h3{font-family:var(--display);font-variation-settings:"SOFT" 100, "WONK" 1;letter-spacing:-.01em;text-wrap:balance;margin:0 0 .5em;line-height:1.1}h1{font-size:clamp(2rem,8vw,2.6rem);font-weight:700}h2{font-size:1.55rem;font-weight:650}h3{font-size:1.2rem;font-weight:650}p{text-wrap:pretty;margin:0 0 .85em}a{color:var(--blau);text-underline-offset:3px}strong{font-weight:700}code{font-family:var(--mono);background:var(--paper-3);border-radius:6px;padding:.1em .35em;font-size:.88em}ul,ol{margin:0 0 .9em;padding-left:1.25em}li+li{margin-top:.3em}img{max-width:100%}:focus-visible{outline:3px solid var(--blau);outline-offset:3px;border-radius:6px}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.page{width:min(100%,560px);padding:18px 16px calc(var(--nav-h) + var(--safe-b) + 32px);margin:0 auto}.eyebrow{font-family:var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft);margin:0 0 6px;font-size:.74rem}.muted{color:var(--ink-soft)}.section-title{justify-content:space-between;align-items:baseline;gap:12px;margin:30px 2px 12px;display:flex}.section-title h2{margin:0;font-size:1.3rem}.btn{--bg:var(--kirsch);--fg:var(--on-accent);background:var(--bg);min-height:52px;color:var(--fg);font:700 1.02rem/1 var(--body);cursor:pointer;box-shadow:0 3px 0 color-mix(in srgb, var(--bg) 55%, #000);touch-action:manipulation;user-select:none;border:0;border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:0 22px;text-decoration:none;transition:transform .12s,box-shadow .12s,opacity .2s;display:inline-flex}.btn:active{box-shadow:0 0 0 color-mix(in srgb, var(--bg) 55%, #000);transform:translateY(3px)}.btn[disabled],.btn[aria-disabled=true]{opacity:.45;pointer-events:none}.btn-block{width:100%}.btn-blau{--bg:var(--blau)}.btn-ghost{--bg:transparent;--fg:var(--ink);box-shadow:inset 0 0 0 2px var(--line)}.btn-ghost:active{box-shadow:inset 0 0 0 2px var(--line)}.btn-mint{--bg:var(--mint)}.btn-small{min-height:40px;padding:0 16px;font-size:.92rem}.tag{background:var(--paper-2);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 18px 18px 22px;position:relative}.tag:before{content:"";background:var(--paper);border-radius:50%;width:10px;height:10px;position:absolute;top:14px;left:14px;box-shadow:inset 0 1px 2px #00000040}.tag-kirsch{background:var(--kirsch);color:var(--on-accent)}.tag-blau{background:var(--blau);color:var(--on-accent)}.chip{font:600 .8rem/1.2 var(--mono);letter-spacing:.02em;background:var(--blau-soft);color:var(--blau);border-radius:6px 999px 999px 6px;align-items:center;gap:6px;padding:5px 12px 5px 16px;display:inline-flex;position:relative}.chip:before{content:"";background:var(--paper);border-radius:50%;width:5px;height:5px;margin-top:-2.5px;position:absolute;top:50%;left:6px}.chip-kirsch{background:var(--kirsch-soft);color:var(--kirsch)}.chip-mint{background:var(--mint-soft);color:var(--mint)}.chip-gold{background:color-mix(in srgb, var(--gold) 24%, transparent);color:var(--gold-dark)}.stars{gap:2px;display:inline-flex}.star{width:22px;height:22px;color:var(--paper-3);filter:drop-shadow(0 1px #0000001f);transition:color .3s,transform .3s cubic-bezier(.3,1.6,.5,1);display:inline-block}.star.on{color:var(--gold)}.star:nth-child(2){transform:rotate(-8deg)}.star.pop{animation:.6s cubic-bezier(.3,1.6,.5,1) star-pop}@keyframes star-pop{0%{transform:scale(.3)rotate(-40deg)}to{transform:scale(1)rotate(0)}}.receipt{font-family:var(--mono);background:var(--paper-2);color:var(--ink);box-shadow:var(--shadow);--zig:9px;-webkit-mask:conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) bottom / calc(var(--zig) * 2) var(--zig) repeat-x, linear-gradient(#000 0 0) top / 100% calc(100% - var(--zig) + 1px) no-repeat;mask:conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) bottom / calc(var(--zig) * 2) var(--zig) repeat-x, linear-gradient(#000 0 0) top / 100% calc(100% - var(--zig) + 1px) no-repeat;padding:22px 20px 30px;font-size:.86rem;line-height:1.6;position:relative}.receipt .r-head{text-align:center;text-transform:uppercase;letter-spacing:.14em;margin-bottom:10px}.receipt .r-row{justify-content:space-between;gap:12px;display:flex}.receipt .r-sep{border:0;border-top:2px dashed var(--line);margin:10px 0}.receipt .r-total{font-size:1.05rem;font-weight:600}.barcode{background:repeating-linear-gradient(90deg, var(--ink) 0 2px, transparent 2px 4px, var(--ink) 4px 5px, transparent 5px 8px, var(--ink) 8px 11px, transparent 11px 12px);opacity:.85;width:70%;height:38px;margin:14px auto 0}.bar{background:var(--paper-3);border-radius:999px;height:12px;overflow:hidden}.bar>span{height:100%;width:var(--w,0%);border-radius:inherit;background:repeating-linear-gradient(-45deg, var(--kirsch) 0 10px, color-mix(in srgb, var(--kirsch) 82%, #fff) 10px 20px);transition:width .8s cubic-bezier(.2,.8,.2,1);display:block}.bottom-nav{z-index:40;height:calc(var(--nav-h) + var(--safe-b));padding-bottom:var(--safe-b);background:color-mix(in srgb, var(--paper-2) 88%, transparent);-webkit-backdrop-filter:blur(14px)saturate(1.4);border-top:1px solid var(--line);grid-template-columns:repeat(4,1fr);display:grid;position:fixed;inset:auto 0 0}.bottom-nav a{color:var(--ink-soft);font:600 .72rem/1 var(--body);letter-spacing:.02em;align-content:center;place-items:center;gap:3px;text-decoration:none;display:grid}.bottom-nav svg{width:26px;height:26px}.bottom-nav a[aria-current=page]{color:var(--kirsch)}.bottom-nav a[aria-current=page] svg{transform:translateY(-1px)}.sync-dot{top:max(10px, env(safe-area-inset-top));z-index:50;font:600 .7rem/1 var(--mono);background:var(--paper-3);color:var(--ink-soft);border-radius:999px;padding:6px 10px;display:none;position:fixed;right:12px}:root[data-sync=offline] .sync-dot{display:block}.demo-bar{padding:max(8px, env(safe-area-inset-top)) 16px 8px;background:var(--ink);color:var(--paper);font:400 .8rem/1.3 var(--body);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:4px 12px;display:flex}.demo-bar b{font-family:var(--mono);letter-spacing:.04em;text-transform:uppercase}.demo-bar a{color:inherit;text-underline-offset:3px;font-weight:700}.demo-legal{justify-content:center;gap:16px;margin:28px 0 0;font-size:.8rem;display:flex}.demo-legal a{color:var(--ink-soft)}#kiw-toasts{left:50%;top:max(14px, env(safe-area-inset-top));z-index:100;pointer-events:none;gap:8px;width:min(92vw,420px);display:grid;position:fixed;transform:translate(-50%)}.toast{background:var(--ink);color:var(--paper);box-shadow:var(--shadow-lift);border-radius:14px;align-items:center;gap:12px;padding:12px 16px;animation:.45s cubic-bezier(.3,1.4,.5,1) toast-in;display:flex}.toast small{font:600 .7rem/1.2 var(--mono);text-transform:uppercase;letter-spacing:.1em;opacity:.75;display:block}.toast-emoji{font-size:1.8rem}.toast-out{opacity:0;transition:all .35s;transform:translateY(-10px)}@keyframes toast-in{0%{opacity:0;transform:translateY(-16px)scale(.96)}}label.field{gap:6px;margin-bottom:14px;font-size:.95rem;font-weight:700;display:grid}label.field span.hint{color:var(--ink-soft);font-size:.86rem;font-weight:400}input[type=text],input[type=search],input[type=password],textarea{width:100%;font:400 1rem/1.45 var(--body);color:var(--ink);background:var(--paper-2);border:2px solid var(--line);border-radius:var(--radius-sm);padding:12px 14px;transition:border-color .2s}textarea{resize:vertical;min-height:120px}input:focus,textarea:focus{border-color:var(--blau);outline:none}.prompt-box{font-family:var(--body);white-space:pre-wrap;word-break:break-word;background:var(--paper-3);border-radius:var(--radius-sm);border-left:4px solid var(--blau);max-height:42vh;margin:0 0 12px;padding:14px 16px;font-size:.95rem;line-height:1.55;position:relative;overflow:auto}.prompt-actions{grid-template-columns:1fr 1fr;gap:10px;display:grid}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}