@font-face{font-family:IBM Plex Sans;font-style:italic;font-weight:400;font-stretch:100%;font-display:swap;src:url(/fonts/IBMPlexSans-400-italic-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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 Sans;font-style:italic;font-weight:400;font-stretch:100%;font-display:swap;src:url(/fonts/IBMPlexSans-400-italic-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,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 Sans;font-style:normal;font-weight:400;font-stretch:100%;font-display:swap;src:url(/fonts/IBMPlexSans-400-normal-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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 Sans;font-style:normal;font-weight:400;font-stretch:100%;font-display:swap;src:url(/fonts/IBMPlexSans-400-normal-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,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 Sans;font-style:normal;font-weight:500;font-stretch:100%;font-display:swap;src:url(/fonts/IBMPlexSans-500-normal-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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 Sans;font-style:normal;font-weight:500;font-stretch:100%;font-display:swap;src:url(/fonts/IBMPlexSans-500-normal-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,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 Sans;font-style:normal;font-weight:600;font-stretch:100%;font-display:swap;src:url(/fonts/IBMPlexSans-600-normal-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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 Sans;font-style:normal;font-weight:600;font-stretch:100%;font-display:swap;src:url(/fonts/IBMPlexSans-600-normal-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Literata;font-style:italic;font-weight:400;font-display:swap;src:url(/fonts/Literata-400-italic-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Literata;font-style:italic;font-weight:400;font-display:swap;src:url(/fonts/Literata-400-italic-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Literata;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/Literata-400-normal-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Literata;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/Literata-400-normal-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Literata;font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/Literata-600-normal-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Literata;font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/Literata-600-normal-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Patrick Hand;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/PatrickHand-400-normal-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Patrick Hand;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/PatrickHand-400-normal-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--font-ui: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;--font-text: "Literata", Georgia, "Times New Roman", serif;--line: 2rem}:root,[data-theme=blue]{--page: #eef1f5;--sheet: #ffffff;--ink: #1c2a3a;--ink-muted: #5e6b7a;--ruling: #d9e2ee;--margin: #f2b8c6;--accent: #2456a6;--accent-strong: #1c468a;--accent-soft: #e4ecf9;--on-accent: #ffffff;--on-ink: #ffffff;--pen: #bf2a23;--pen-soft: #fbe9e7;--ok: #2a6f47;--ok-soft: #e4f3ea;--warn: #8c520d;--warn-soft: #fbeedb;--divider: rgba(0, 0, 0, .08);--shadow: rgba(28, 42, 58, .18)}[data-theme=lavender]{--page: #f3f0f9;--sheet: #fdfbff;--ink: #2a2340;--ink-muted: #6b6480;--ruling: #e2dcef;--margin: #f2b8c6;--accent: #6a4bb3;--accent-strong: #563a99;--accent-soft: #ece5f8}[data-theme=mint]{--page: #eaf4f1;--sheet: #fbfefd;--ink: #1d3330;--ink-muted: #5a706c;--ruling: #d3e6e0;--margin: #f2b8c6;--accent: #1b6e61;--accent-strong: #155a4f;--accent-soft: #dcf0eb}[data-theme=coral]{--page: #fbefe9;--sheet: #fffcfa;--ink: #3a2622;--ink-muted: #7a615b;--ruling: #f0dcd3;--margin: #f2b8c6;--accent: #a73d60;--accent-strong: #8f3352;--accent-soft: #f9e1e8}[data-theme=sunflower]{--page: #fbf6e3;--sheet: #fffdf5;--ink: #33291a;--ink-muted: #75694f;--ruling: #eee4c4;--margin: #f2b8c6;--accent: #6b4a1c;--accent-strong: #573b14;--accent-soft: #f8e7a4}[data-theme=night]{--page: #0f1620;--sheet: #18212e;--ink: #e6ecf3;--ink-muted: #9aa8b8;--ruling: #2b3747;--margin: #5a3441;--accent: #7fa7ff;--accent-strong: #99b9ff;--accent-soft: #22314a;--on-accent: #0f1620;--on-ink: #0f1620;--pen: #ff7b72;--pen-soft: #3a1f22;--ok: #5fd08a;--ok-soft: #1d3527;--warn: #f0b35a;--warn-soft: #3a2d18;--divider: rgba(255, 255, 255, .12);--shadow: rgba(0, 0, 0, .45);color-scheme:dark}*,*:before,*:after{box-sizing:border-box}html{font-size:17px}body{margin:0;background:var(--page);color:var(--ink);font-family:var(--font-ui);line-height:1.5;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}button{font:inherit;color:inherit;cursor:pointer}button,a,input,label.button{touch-action:manipulation}input,textarea{-webkit-user-select:text}h1,h2,h3{font-family:var(--font-text);font-weight:600;line-height:1.2;margin:0 0 .5rem}h1{font-size:2rem}h2{font-size:1.4rem}h3{font-size:1.1rem}.muted{color:var(--ink-muted)}.small{font-size:.85rem}.hidden{display:none!important}#app{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column}.top{display:flex;align-items:center;gap:1.5rem;padding:.75rem 1.5rem;background:var(--sheet);border-bottom:1px solid var(--ruling);padding-top:calc(.75rem + env(safe-area-inset-top,0px));padding-left:calc(1.5rem + env(safe-area-inset-left,0px));padding-right:calc(1.5rem + env(safe-area-inset-right,0px))}.brand{font-family:var(--font-text);font-weight:600;font-size:1.1rem;color:var(--ink)}.top nav{display:flex;gap:1rem;margin-left:auto}.top nav a{padding:.25rem .5rem;border-radius:.35rem;color:var(--ink-muted)}.top nav a.active{color:var(--ink);background:var(--accent-soft)}.lang-switch{display:flex;border:1px solid var(--ruling);border-radius:.4rem;overflow:hidden}.lang{border:0;background:transparent;padding:.2rem .55rem;font-size:.8rem;font-weight:600;color:var(--ink-muted)}.lang.active{background:var(--ink);color:var(--on-ink)}main{width:min(46rem,100% - 2rem);margin:2rem auto 4rem;margin-bottom:calc(4rem + env(safe-area-inset-bottom,0px))}.button,.button:visited{display:inline-block;padding:.6rem 1.2rem;border-radius:.5rem;border:1px solid var(--ruling);background:var(--sheet);color:var(--ink);font-weight:500;text-align:center}.button.primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}.button.primary:hover{background:var(--accent-strong)}.button.big{font-size:1.25rem;padding:.9rem 2rem}.button.danger{color:var(--pen);border-color:var(--pen-soft)}.button:focus-visible,.choice:focus-visible,.word:focus-visible,.slot:focus-visible{outline:3px solid var(--accent-soft);outline-offset:2px}.link{background:none;border:0;padding:0;color:var(--accent);text-decoration:underline;text-underline-offset:3px}.hero{text-align:center;padding:2rem 0 2.5rem}.hero h1{font-size:2.4rem;margin-bottom:1.25rem}.hero .muted{margin:.75rem 0 0}.streak{color:var(--ok);font-weight:500}.section-title{font-size:1rem;font-family:var(--font-ui);font-weight:500;color:var(--ink-muted);text-transform:uppercase;letter-spacing:.06em;margin:0 0 .5rem}.type-chips{display:flex;flex-wrap:wrap;gap:.5rem;margin:0 0 1.75rem}.chip{border:1px solid var(--ruling);background:var(--sheet);color:var(--ink-muted);border-radius:999px;padding:.45rem .95rem;font-size:.9rem;min-height:44px}.chip:before{content:"＋ "}.chip.on{background:var(--accent-soft);border-color:var(--accent);color:var(--accent);font-weight:500}.chip.on:before{content:"✓ "}.topic.off{opacity:.55}.topics{list-style:none;margin:0 0 1.75rem;padding:0;background:var(--sheet);border:1px solid var(--ruling);border-radius:.6rem;overflow:hidden}.topics li+li{border-top:1px solid var(--ruling)}.topic{display:grid;grid-template-columns:1fr auto;gap:.2rem 1rem;padding:.9rem 1.1rem;color:var(--ink)}.topic:hover{background:var(--accent-soft)}.topic-name{font-family:var(--font-text);font-size:1.15rem}.topic-meta{display:flex;gap:.75rem;align-items:center;font-size:.9rem}.badge{background:var(--pen-soft);color:var(--pen);border-radius:1rem;padding:.05rem .6rem;font-weight:600;font-size:.8rem}.bar{grid-column:1 / -1;height:4px;background:var(--ruling);border-radius:2px;overflow:hidden}.bar-fill{display:block;height:100%;background:var(--accent)}.progress-row{display:flex;align-items:center;gap:1rem;margin-bottom:1rem;font-size:.9rem;color:var(--ink-muted)}.progress{flex:1;height:6px;background:var(--ruling);border-radius:3px;overflow:hidden}.progress-fill{height:100%;background:var(--accent);transition:width .3s ease}.stage{position:relative;border-radius:.6rem;padding:1.5rem 2rem 1.5rem 3rem;min-height:18rem}.paper{position:relative;color:var(--ink);background-color:var(--sheet);border:1px solid var(--ruling)}.paper[data-paper=lined],.paper[data-paper=old]{background-image:repeating-linear-gradient(to bottom,transparent 0,transparent calc(var(--line) - 1px),var(--ruling) calc(var(--line) - 1px),var(--ruling) var(--line));background-size:100% var(--line);background-position:0 1.5rem}.paper[data-paper=lined]:before,.paper[data-paper=old]:before{content:"";position:absolute;top:0;bottom:0;left:2.1rem;width:1px;background:var(--margin)}.paper[data-paper=grid]{background-image:linear-gradient(var(--ruling) 1px,transparent 1px),linear-gradient(90deg,var(--ruling) 1px,transparent 1px);background-size:calc(var(--line) / 2) calc(var(--line) / 2);background-position:-1px -1px}.paper[data-paper=old]{--sheet: #f4ead2;--page: #eadfc3;--ink: #3b2f22;--ink-muted: #63543f;--ruling: #e0d0ab;--margin: #d9a9a0;--accent: #2f4f7a;--accent-strong: #243e61;--accent-soft: #e2e1d9;--on-accent: #ffffff;--pen: #b3261e;--pen-soft: #f3dccb;--ok: #2f6b3f;--ok-soft: #e2e6c9;--warn: #764608;--warn-soft: #f1dfbd;--divider: rgba(59, 47, 34, .14);--shadow: rgba(59, 47, 34, .25);background-color:#f4ead2;box-shadow:inset 0 0 60px #785a2838}.paper[data-paper=sticky]{--sheet: #fff3a3;--page: #f5e38a;--ink: #3a3320;--ink-muted: #5a5132;--ruling: rgba(120, 100, 20, .18);--accent: #2456a6;--accent-strong: #1c468a;--accent-soft: #f1e79e;--on-accent: #ffffff;--pen: #ab1f1f;--pen-soft: #fbe0a0;--ok: #236628;--ok-soft: #e8f0a0;--warn: #7f4b00;--warn-soft: #f9dd8a;--divider: rgba(58, 51, 32, .14);--shadow: rgba(58, 51, 32, .25);border-color:transparent;border-radius:.2rem;box-shadow:0 10px 22px #00000024,0 2px 4px #00000014}.paper[data-paper=sticky]:before{content:"";position:absolute;top:-.7rem;left:50%;width:5.5rem;height:1.4rem;transform:translate(-50%) rotate(-2deg);background:#ffffff8c;box-shadow:0 1px 2px #00000014}.paper[data-paper=chalk]{--sheet: #2f4a3a;--page: rgba(255, 255, 255, .08);--ink: #f1f4ee;--ink-muted: #d0dbd1;--ruling: rgba(255, 255, 255, .1);--margin: transparent;--accent: #bcdcff;--accent-strong: #d3e8ff;--accent-soft: rgba(158, 203, 255, .18);--on-accent: #1f3b2d;--pen: #ffbcc1;--pen-soft: rgba(255, 154, 162, .14);--ok: #a8e6a1;--ok-soft: rgba(168, 230, 161, .14);--warn: #ffd27a;--warn-soft: rgba(255, 210, 122, .14);--divider: rgba(255, 255, 255, .14);--shadow: rgba(0, 0, 0, .35);--font-text: "Patrick Hand", "Comic Sans MS", cursive;color-scheme:dark;border:.5rem solid #7a5230;border-radius:.5rem;background-image:radial-gradient(ellipse at 30% 20%,rgba(255,255,255,.06),transparent 60%),radial-gradient(ellipse at 80% 90%,rgba(255,255,255,.04),transparent 55%);box-shadow:inset 0 0 40px #00000059}.paper[data-paper=chalk] .sentence,.paper[data-paper=chalk] .word,.paper[data-paper=chalk] .word-static,.paper[data-paper=chalk] .choice,.paper[data-paper=chalk] .answer-input{font-size:1.85rem;text-shadow:0 0 1px rgba(255,255,255,.35);letter-spacing:.01em}.paper[data-paper=chalk] .choice,.paper[data-paper=chalk] .answer-input{font-size:1.4rem}.tag-row{display:flex;gap:.5rem;margin-bottom:.75rem}.tag{font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-muted);background:var(--page);padding:.1rem .5rem;border-radius:.3rem}.tag.retry{color:var(--pen);background:var(--pen-soft)}.instruction{color:var(--ink-muted);margin:0 0 .5rem;font-size:.95rem}.instruction.warn{color:var(--warn);font-weight:500}.sentence{font-family:var(--font-text);font-size:1.6rem;line-height:var(--line);margin:0 0 1rem}.prompt-sk{font-style:italic}.gap{display:inline-block;min-width:3.5rem;border-bottom:2px solid var(--ink);text-align:center;white-space:pre;color:var(--accent)}.gap.filled{border-bottom-color:var(--accent)}.choices{display:flex;flex-wrap:wrap;gap:.5rem;margin:.5rem 0 1rem}.choice{border:1px solid var(--ruling);background:var(--sheet);border-radius:.5rem;padding:.45rem .9rem;font-family:var(--font-text);font-size:1.1rem}.choice:hover:not(:disabled){border-color:var(--accent)}.choice.selected{border-color:var(--accent);background:var(--accent-soft)}.choice.is-right{border-color:var(--ok);background:var(--ok-soft);color:var(--ok)}.choice.is-wrong{border-color:var(--pen);background:var(--pen-soft);color:var(--pen)}.choice:disabled{cursor:default}.choice:active:not(:disabled),.word:active:not(:disabled),.slot:active:not(:disabled){background:var(--accent-soft);border-color:var(--accent)}.button:active{filter:brightness(.94)}.tiles{display:flex;flex-wrap:wrap;align-items:baseline;gap:.15rem .35rem}.word{border:1px solid transparent;background:transparent;border-radius:.35rem;padding:0 .3rem;font-family:var(--font-text);font-size:1.6rem;line-height:1.6}.word:hover:not(:disabled){border-color:var(--ruling);background:var(--page)}.word.selected{border-color:var(--accent);background:var(--accent-soft)}.word.miss{border-color:var(--warn);background:var(--warn-soft);color:var(--warn);opacity:.75}.word.marked{border-color:transparent;background:transparent}.word.used{opacity:.3}.word.in-line{background:var(--accent-soft)}.word:disabled{cursor:default}.word-static{font-family:var(--font-text);font-size:1.6rem}.slot{display:inline-block;min-width:1.1rem;height:1.6rem;border:0;border-bottom:2px dotted var(--ruling);background:transparent;vertical-align:baseline;font-family:var(--font-text);font-size:1.4rem;color:var(--accent);padding:0 .2rem}.slot:hover:not(:disabled),.slot.selected{border-bottom:2px solid var(--accent);background:var(--accent-soft)}.slot.marked{border-bottom:0;background:transparent}.pool{display:flex;flex-wrap:wrap;gap:.4rem;margin:.5rem 0 1rem}.pool .word{border-color:var(--ruling);background:var(--sheet)}.build-line{min-height:var(--line);border-bottom:2px solid var(--ink)}.placeholder{color:var(--ruling)}.answer-input{width:100%;font-family:var(--font-text);font-size:1.4rem;padding:.5rem .2rem;border:0;border-bottom:2px solid var(--ink);background:transparent;color:var(--accent);outline:none}.answer-input:focus{border-bottom-color:var(--accent)}.hint{color:var(--ink-muted);font-size:.95rem;margin:.5rem 0 0}.pen-wrong{color:var(--pen);text-decoration-color:var(--pen);text-decoration-thickness:2px}.pen-fix{color:var(--pen);font-style:italic}.pen-ok{color:var(--ok)}.pen-almost{color:var(--warn)}.pen-fix-ok{color:var(--ok)}.actions{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center;margin-top:1rem}.stage .actions>.button.primary{position:sticky;bottom:calc(.75rem + env(safe-area-inset-bottom,0px));z-index:2;box-shadow:0 4px 14px var(--shadow)}.actions .button{min-width:8rem}.verdict{margin:0;font-weight:600;width:100%}.verdict.ok{color:var(--ok)}.verdict.bad{color:var(--pen)}.verdict.warn{color:var(--warn)}.card{width:100%;border-left:3px solid;border-radius:0 .5rem .5rem 0;padding:.9rem 1.1rem;animation:rise .25s ease-out}.card.bad{background:var(--pen-soft);border-color:var(--pen)}.card.warn{background:var(--warn-soft);border-color:var(--warn)}.card.ok{background:var(--ok-soft);border-color:var(--ok)}.card-label{margin:0;font-size:.75rem;text-transform:uppercase;letter-spacing:.06em}.card.bad .card-label{color:var(--pen)}.card.ok .card-label{color:var(--ok)}.card.warn .card-label{color:var(--warn)}.card-answer{margin:.1rem 0 .5rem;font-family:var(--font-text);font-size:1.2rem}.explanation{margin:0 0 .5rem}.explanation p{margin:0}.explanation-sk{margin-top:.35rem!important;padding-top:.35rem;border-top:1px dashed var(--divider);color:var(--ink-muted);font-size:.95rem}.card .rule{margin-top:.75rem;padding-top:.75rem;border-top:1px solid var(--divider);font-size:.95rem}@keyframes rise{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}@media(prefers-reduced-motion:reduce){.card{animation:none}.progress-fill{transition:none}}.score{font-family:var(--font-text);font-size:1.6rem;margin:0 0 1.25rem}.mistake{padding:.75rem 0;border-top:1px solid var(--ruling)}.mistake-answer{margin:0 0 .25rem;font-family:var(--font-text);font-size:1.15rem}.empty{color:var(--ink-muted);font-size:1.2rem}.tabs{display:flex;flex-wrap:wrap;gap:.4rem;margin:.5rem 0 1.25rem}.tabs a{padding:.3rem .8rem;border-radius:1rem;border:1px solid var(--ruling);color:var(--ink-muted);background:var(--sheet)}.tabs a.active{background:var(--ink);border-color:var(--ink);color:var(--on-ink)}.rule-page{background:var(--sheet);border:1px solid var(--ruling);border-radius:.6rem;padding:1.5rem 2rem}.rule h3{margin-top:1.25rem}.rule h3:first-child{margin-top:0}.rule table{border-collapse:collapse;margin:.5rem 0 1rem;width:100%;font-size:.95rem}.rule th,.rule td{text-align:left;padding:.35rem .6rem;border-bottom:1px solid var(--ruling);vertical-align:top}.rule th{color:var(--ink-muted);font-weight:500}.rule ul{padding-left:1.2rem}.rule em{font-family:var(--font-text)}.stat-tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(10rem,1fr));gap:.75rem;margin:1rem 0 1.5rem}.tile{background:var(--sheet);border:1px solid var(--ruling);border-radius:.6rem;padding:.9rem 1rem;display:flex;flex-direction:column}.tile-value{font-family:var(--font-text);font-size:2rem;font-weight:600}.tile-label{color:var(--ink-muted);font-size:.9rem}.stats-table{width:100%;border-collapse:collapse;background:var(--sheet);border:1px solid var(--ruling);border-radius:.6rem;overflow:hidden}.stats-table th,.stats-table td{padding:.6rem .9rem;text-align:left;border-bottom:1px solid var(--ruling)}.stats-table th{color:var(--ink-muted);font-weight:500;font-size:.85rem}.stats-table tr:last-child td{border-bottom:0}.stats-table .actions{margin-top:1.5rem}@media(max-width:600px){html{font-size:16px}.top{flex-wrap:wrap;gap:.75rem;padding:.75rem 1rem}.top nav{margin-left:0}.stage{padding:1.25rem 1rem 1.25rem 2.2rem}.paper[data-paper=lined]:before,.paper[data-paper=old]:before{left:1.5rem}.sentence,.word,.word-static{font-size:1.35rem}}@media(pointer:coarse),(max-width:600px){.button,.choice{min-height:44px}.choice{padding:.5rem 1.1rem}.choices{gap:.6rem}.lang{padding:.65rem .9rem;font-size:.85rem}.top nav a{padding:.6rem .7rem}.tiles{line-height:2.8;gap:.3rem .45rem}.word{padding:.1rem .45rem}.slot{min-width:2.75rem;height:2.7rem;padding:0 .5rem;border-bottom-width:3px}.pool{gap:.55rem}.pool .word,.word.in-line{padding:.3rem .6rem}.link{padding:.5rem 0;display:inline-block}}@media(max-width:600px){.top{row-gap:.25rem}.brand{font-size:1rem}.top nav{flex:1;justify-content:space-between;gap:.25rem}.appearance-link{order:1;margin-left:auto}.top nav{order:2}.lang-switch{order:3}.hero{padding:1.25rem 0 1.75rem}.hero h1{font-size:1.9rem}.button.big{display:block;width:100%}.actions .button{flex:1}.stat-tiles{grid-template-columns:1fr 1fr}.rule-page{padding:1.1rem 1rem}.stats-table th,.stats-table td{padding:.5rem .6rem}}.secondary-actions{display:flex;flex-wrap:wrap;gap:.25rem 1.5rem;width:100%}.secondary-actions .link{color:var(--ink-muted);min-height:44px;padding:.5rem 0}dialog.sheet{border:0;border-radius:.9rem;padding:1.25rem 1.25rem 1rem;width:min(26rem,calc(100% - 2rem));color:var(--ink);background:var(--sheet);box-shadow:0 12px 40px var(--shadow)}dialog.sheet::backdrop{background:#1c2a3a73}dialog.sheet p{margin:.25rem 0 1.25rem;color:var(--ink-muted)}.sheet-actions{display:flex;gap:.75rem}.sheet-actions .button{flex:1;min-height:44px}@media(max-width:600px){dialog.sheet{width:100%;max-width:100%;margin:auto 0 0;border-radius:1rem 1rem 0 0;padding-bottom:calc(1rem + env(safe-area-inset-bottom,0px))}}.appearance-link{display:inline-flex;align-items:center;justify-content:center;font-size:1.25rem;width:44px;height:44px;border-radius:.5rem;border:1px solid var(--ruling);background:var(--sheet)}.appearance-link.active{background:var(--accent-soft);border-color:var(--accent)}.theme-grid,.paper-grid{display:grid;gap:.75rem;margin:0 0 1.75rem}.theme-grid{grid-template-columns:repeat(3,1fr)}.paper-grid{grid-template-columns:repeat(2,1fr)}.theme-swatch,.paper-choice{display:flex;flex-direction:column;gap:.4rem;align-items:stretch;text-align:center;padding:.5rem;border-radius:.7rem;border:2px solid transparent;background:transparent}.theme-swatch{background:var(--page);border-color:var(--ruling);color:var(--ink)}.theme-swatch.chosen,.paper-choice.chosen{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.swatch-sheet{position:relative;display:flex;align-items:flex-end;justify-content:space-between;height:3.2rem;padding:.35rem .5rem;background:var(--sheet);border:1px solid var(--ruling);border-radius:.45rem}.swatch-accent{width:55%;height:.6rem;border-radius:.3rem;background:var(--accent)}.swatch-text{font-family:var(--font-text);font-size:1.2rem;font-weight:600;color:var(--ink);line-height:1}.swatch-name{font-size:.85rem;font-weight:500}.theme-swatch .swatch-name,.paper-choice .swatch-name{color:var(--ink)}.paper-preview{display:flex;align-items:center;min-height:5.5rem;padding:.75rem .75rem .75rem 2.4rem;border-radius:.45rem;overflow:hidden;text-align:left}.paper-preview .sentence{font-size:1.05rem;line-height:1.5;margin:0}.paper-preview[data-paper=lined],.paper-preview[data-paper=old]{background-position:0 .25rem}.paper-preview[data-paper=lined]:before,.paper-preview[data-paper=old]:before{left:1.6rem}.paper-preview[data-paper=sticky]{overflow:visible;margin-top:.5rem}.paper-preview[data-paper=sticky]:before{width:3rem;height:.9rem;top:-.45rem}.paper-preview[data-paper=chalk]{border-width:.3rem}.paper-preview[data-paper=chalk] .sentence{font-size:1.3rem}