:root{--bg:#f6f4ef;--surface:#fff;--ink:#23201b;--muted:#6b665c;--accent:#2f7d76;--accent-ink:#1c4f4a;--line:#e7e2d8;--track:#e7e2d8;--soft:#eef5f4;--ok:#2f7d76;--bad:#c1543c;--radius:14px;--shadow:0 6px 24px #23201b12}:root[data-theme=dark]{--bg:#1b1815;--surface:#262220;--ink:#ece6da;--muted:#a49b8c;--accent:#2d8074;--accent-ink:#8fd8ce;--line:#3a342d;--track:#3a342d;--soft:#22312e;--ok:#4a9e94;--bad:#e0805f;--shadow:0 6px 24px #0006}*{box-sizing:border-box}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}}body{background:var(--bg);color:var(--ink);-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;margin:0;font-family:Iowan Old Style,Palatino Linotype,Georgia,serif;line-height:1.6}input,textarea,[contenteditable]{-webkit-user-select:text;user-select:text}button{cursor:pointer;font-family:inherit}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px}.primary{background:var(--accent);color:#fff;border:none;border-radius:10px;padding:13px 20px;font-size:16px;font-weight:600}.primary:disabled{opacity:.5;cursor:not-allowed}.error{color:var(--bad)}.muted{color:var(--muted)}.app{max-width:760px;margin:0 auto;padding:0 20px 80px}.loading-screen{min-height:60vh;color:var(--muted);place-items:center;display:grid}.topbar{flex-wrap:wrap;align-items:center;gap:16px;padding:24px 0 20px;display:flex}.brand{background:0 0;border:none;align-items:center;gap:10px;padding:0;display:flex}.brand-mark{object-fit:cover;border-radius:12px;width:44px;height:44px}.brand-name{letter-spacing:-.01em;color:var(--ink);font-size:24px;font-weight:700}.tagline{color:var(--muted);flex:1;min-width:180px;margin:0;font-style:italic}.topbar nav{margin-left:auto}.account-chip{background:var(--surface);border:1px solid var(--line);color:var(--ink);border-radius:999px;align-items:center;gap:8px;padding:4px 14px 4px 4px;font-size:14px;display:flex}.account-chip.active{border-color:var(--accent)}.reader-photo{object-fit:cover;border-radius:50%;flex-shrink:0;width:30px;height:30px}.reader-avatar{background:var(--accent);color:#fff;border-radius:50%;flex-shrink:0;place-items:center;width:30px;height:30px;font-size:13px;font-weight:700;display:grid}.reader-name{font-weight:600}.practice-shell{flex-direction:column;align-items:center;display:flex}.letter-picker{flex-wrap:wrap;justify-content:center;gap:8px;max-width:480px;margin:12px 0 20px;display:flex}.letter-picker button{border:1px solid var(--line);background:var(--surface);width:48px;height:48px;color:var(--ink);border-radius:10px;justify-content:center;align-items:center;display:flex;position:relative}.chip-glyph{width:34px;height:34px;display:block}.letter-picker button.done{opacity:.7;background:var(--soft);border-color:var(--ok)}.letter-check{background:var(--ok);color:#fff;text-align:center;border-radius:50%;width:18px;height:18px;font-size:12px;line-height:18px;position:absolute;top:-6px;right:-6px}.letter-picker button.active{border-color:var(--accent);background:var(--soft)}.word-practice{width:100%;max-width:1000px;margin:0 auto}.word-actions{flex-wrap:wrap;justify-content:center;align-items:center;gap:12px;margin-bottom:8px;display:flex}.worksheet-btn{border:1px solid var(--line);background:var(--surface);min-width:108px;min-height:44px;color:var(--ink);border-radius:10px;justify-content:center;align-items:center;padding:0 18px;font-size:15px;font-weight:600;display:inline-flex}.worksheet-btn:hover{border-color:var(--accent)}.worksheet-btn--primary{background:var(--accent);border-color:var(--accent);color:#fff}.worksheet-btn--primary:hover{border-color:var(--accent)}.custom-text{flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;max-width:560px;margin:0 auto 6px;display:flex}.custom-text-input{border:1px solid var(--line);background:var(--surface);min-height:44px;color:var(--ink);border-radius:10px;flex:240px;padding:0 14px;font-size:15px}.custom-text-input:focus{border-color:var(--accent);outline:none}.word-lines{flex-direction:column;gap:16px;margin-top:8px;display:flex}.word-row{flex-direction:column;gap:6px;display:flex;position:relative}.word-label{color:var(--muted,#888);margin-bottom:2px;font-size:13px;font-weight:600;display:block}.ruled-line{touch-action:none;background:#fff;border:1px solid #ddd;border-radius:8px;display:block}.sentence-practice{width:100%;max-width:1000px;margin:0 auto}.sentence-quote{text-align:center;max-width:640px;margin:14px auto 4px}.sentence-quote blockquote{color:var(--ink);margin:0;font-size:20px;line-height:1.4}.sentence-quote figcaption{margin-top:6px;font-size:14px;font-weight:600}.sentence-sheet{flex-direction:column;gap:20px;margin-top:12px;display:flex}.sentence-copy{flex-direction:column;gap:6px;display:flex}.pen-picker-wrap{z-index:120;justify-content:flex-end;max-width:calc(100vw - 32px);margin:0;display:flex;position:fixed;bottom:16px;right:max(16px,50vw - 388px)}.pen-picker-wrap .pen-picker{max-height:calc(100vh - 32px);overflow:auto}[data-hand=left] .pen-picker-wrap{justify-content:flex-start;left:max(16px,50vw - 388px);right:auto}.pen-toggle{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);cursor:pointer;border-radius:999px;align-items:center;gap:6px;padding:7px 12px;font-size:17px;line-height:1;display:flex}.pen-toggle-dot{border-radius:50%;width:14px;height:14px;box-shadow:inset 0 0 0 1px #00000026}.pen-collapse{width:28px;height:28px;color:var(--muted,#888);cursor:pointer;background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;font-size:14px;display:flex}.pen-collapse:hover{background:var(--soft)}.pen-picker{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:999px;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;padding:6px 10px;display:flex}.pen-group{align-items:center;gap:4px;display:flex}.pen-divider{background:var(--line);align-self:stretch;width:1px;margin:2px}.pen-tool,.pen-width{cursor:pointer;background:0 0;border:1px solid #0000;border-radius:50%;justify-content:center;align-items:center;width:34px;height:34px;font-size:17px;line-height:1;display:flex}.pen-tool.active,.pen-width.active{border-color:var(--accent);background:var(--soft)}.pen-width-dot{border-radius:50%;display:block}.stroke-hint{stroke:#2f7d76;stroke-width:1.6px;stroke-opacity:.4;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:3 7;animation:2s linear infinite stroke-hint-flow}@keyframes stroke-hint-flow{to{stroke-dashoffset:-10px}}@media (prefers-reduced-motion:reduce){.stroke-hint{animation:none}}.pen-nibs{flex-wrap:wrap}.pen-nib{border:1px solid var(--line);height:28px;color:var(--ink);cursor:pointer;white-space:nowrap;background:0 0;border-radius:999px;padding:4px 10px;font-size:12px;font-weight:600;line-height:1}.pen-nib.active{border-color:var(--accent);background:var(--soft);color:var(--accent)}.pen-colors{flex-wrap:wrap}.pen-swatch{cursor:pointer;border:2px solid #0000;border-radius:50%;width:24px;height:24px;padding:0;box-shadow:inset 0 0 0 1px #00000026}.pen-swatch.active{border-color:var(--accent);transform:scale(1.12)}.pen-custom{background:conic-gradient(red,orange,#ff0,#0f0,#0ff,#00f,#f0f,red);justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.pen-custom input[type=color]{opacity:0;cursor:pointer;background:0 0;border:none;width:200%;height:200%;padding:0;position:absolute;inset:-4px}.canvas-status{text-align:center;margin:0 0 10px;font-size:16px}.practice-fade{flex-direction:column;align-items:center;width:min(92vw,1000px);transition:opacity .3s;display:flex}.trace-shell,.drill-shell{flex-direction:column;align-items:center;width:100%;display:flex}.drill-strip{touch-action:none;background:#fff;border:1px solid #ddd;border-radius:10px;align-self:stretch;width:100%}.canvas-actions{gap:12px;width:100%;max-width:480px;margin-top:16px;display:flex}.canvas-actions button{border-radius:12px;flex:1;min-height:56px;padding:14px 20px;font-size:18px;font-weight:700}.canvas-actions button:disabled{opacity:.5;cursor:not-allowed}.watch-again{color:var(--accent-ink);background:0 0;border:none;margin:12px auto 0;padding:6px;font-size:14px;font-weight:600;text-decoration:underline;display:block}.outline{background:var(--surface);color:var(--ink);border:1px solid var(--line)}.outline:hover{border-color:var(--accent);color:var(--accent-ink)}.canvas-feedback{text-align:center;margin-top:14px;font-size:17px;line-height:1.6}.retry-indicator{color:var(--bad);margin:0 0 6px;font-size:19px;font-weight:700}.font-print{font-family:Andika,Helvetica Neue,Arial,sans-serif}.font-cursive{font-family:Caveat,Iowan Old Style,serif}.picker{background:var(--bg);place-items:center;min-height:100vh;padding:24px;display:grid}.picker-inner{text-align:center;max-width:640px}.picker-inner h1{color:var(--ink);margin:0 0 6px;font-size:28px}.picker-grid{grid-template-columns:repeat(2,1fr);gap:20px;margin-top:12px;display:grid}.picker-card{background:var(--surface);border:2px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);flex-direction:column;align-items:center;gap:6px;padding:32px 20px;display:flex;position:relative}button.picker-card{cursor:pointer}button.picker-card:hover{border-color:var(--accent)}.picker-card.active{border-color:var(--accent);background:var(--soft)}.picker-card.soon{opacity:.55;cursor:default}.picker-soon-badge{text-transform:uppercase;letter-spacing:.04em;color:var(--ink);background:var(--soft);border:1px solid var(--line);border-radius:999px;padding:2px 8px;font-size:10px;font-weight:700;position:absolute;top:10px;right:10px}.picker-icon{height:60px;font-size:42px;line-height:60px}.practice-picker{text-align:center;width:100%;max-width:640px;margin:0 auto}.picker-heading{color:var(--ink);margin:8px 0 4px;font-size:26px}.picker-sample{height:60px;color:var(--accent-ink);justify-content:center;align-items:flex-end;gap:4px;display:flex}.picker-sample-glyph{width:44px;height:52px}.picker-label{color:var(--ink);font-size:18px;font-weight:700}.picker-sub{font-size:13px}.picker-section{color:var(--ink);text-align:left;margin:34px 0 2px;font-size:18px}.picker-section-sub{text-align:left;margin:0;font-size:14px}.picker-section-row{justify-content:space-between;align-items:flex-end;gap:12px;margin-top:34px;display:flex}.picker-section-row .picker-section,.picker-section-row .picker-section-sub{margin-top:0}.font-chip{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:999px;flex-shrink:0;align-items:center;gap:8px;padding:8px 14px;display:inline-flex}.font-chip:hover{border-color:var(--accent)}.font-chip-label{text-transform:uppercase;letter-spacing:.05em;font-size:11px}.font-chip-name{color:var(--ink);font-size:14px;font-weight:700}.font-chip-caret{color:var(--muted)}.fonts-done{text-align:center;margin-top:26px}.field-label{text-transform:uppercase;letter-spacing:.05em;margin:4px 0 8px;font-size:13px;display:block}@media (width<=640px){.picker-grid{grid-template-columns:1fr}}.landing{background:var(--bg);min-height:100vh}.landing-nav{z-index:100;background:var(--bg);border-bottom:1px solid var(--line);position:sticky;top:0}.landing-nav-inner{justify-content:space-between;align-items:center;max-width:1000px;margin:0 auto;padding:16px 24px;display:flex}.landing-logo{align-items:center;gap:10px;font-size:20px;font-weight:700;display:flex}.landing-logo-mark{object-fit:cover;border-radius:9px;flex-shrink:0;width:30px;height:30px}.landing-signin-btn{background:var(--surface);border:1px solid var(--line);color:var(--ink);border-radius:999px;min-height:44px;padding:11px 20px;font-size:14px;font-weight:600}.landing-signin-btn:hover{border-color:var(--accent);color:var(--accent-ink)}.landing-hero{text-align:center;padding:72px 24px 64px}.landing-hero-inner{max-width:700px;margin:0 auto}.landing-headline{color:var(--ink);margin:0 0 20px;font-size:clamp(2rem,5.5vw,3.2rem);line-height:1.15}.landing-headline-accent{color:var(--accent-ink)}.landing-sub{color:var(--muted);max-width:560px;margin:0 auto 32px;font-size:18px;line-height:1.7}.landing-ctas{flex-wrap:wrap;justify-content:center;gap:12px;margin-bottom:14px;display:flex}.landing-cta-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow);border:none;border-radius:10px;align-items:center;gap:10px;padding:14px 26px;font-size:16px;font-weight:600;display:inline-flex}.landing-cta-primary:disabled{opacity:.65}.landing-cta-apple{color:#fff;box-shadow:var(--shadow);background:#000;border:none;border-radius:10px;align-items:center;gap:10px;padding:14px 26px;font-size:16px;font-weight:600;display:inline-flex}.landing-cta-apple:disabled{opacity:.65}.google-icon,.apple-icon{flex-shrink:0;width:18px;height:18px}.landing-error{color:var(--bad);margin:8px 0 0;font-size:14px}.landing-note{color:var(--muted);margin:8px 0 0;font-size:14px}.landing-section-inner{max-width:1000px;margin:0 auto;padding:24px 24px 64px}.landing-features{background:var(--soft);border-top:1px solid var(--line)}.landing-feature-grid{text-align:left;grid-template-columns:repeat(3,1fr);gap:18px;display:grid}.landing-feature-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px}.landing-feature-icon{margin-bottom:12px;font-size:26px}.landing-feature-card h2{color:var(--ink);margin:0 0 8px;font-size:16px}.landing-feature-card p{color:var(--muted);margin:0;font-size:14px;line-height:1.6}.landing-demo{border-top:1px solid var(--line)}.landing-demo .landing-section-inner{text-align:center}.landing-demo-heading{color:var(--ink);margin:0 0 8px;font-size:clamp(1.5rem,3.5vw,2rem)}.landing-demo-sub{max-width:560px;margin:0 auto 24px;font-size:16px}.demo-shell{max-width:640px;margin:0 auto}.demo-progress{margin:0 0 4px;font-size:14px}.demo-done{text-align:center;max-width:460px;margin-top:20px}.demo-done-title{color:var(--ink);margin:0 0 6px;font-size:18px;font-weight:700}.demo-done .landing-cta-primary{margin-top:14px}.modal-backdrop{z-index:200;background:#14120f73;justify-content:center;align-items:flex-start;padding:48px 16px;display:flex;position:fixed;inset:0;overflow-y:auto}.modal-scroll{width:100%;max-width:560px}.modal-scroll--wide{max-width:720px}.profile-card{position:relative}.profile-close{border:1px solid var(--line);background:var(--surface);width:34px;height:34px;color:var(--ink);border-radius:50%;place-items:center;font-size:15px;line-height:1;display:grid;position:absolute;top:14px;right:14px}.profile-close:hover{border-color:var(--accent);color:var(--accent-ink)}.fonts-screen{width:100%;max-width:720px;margin:0 auto;position:relative}.fonts-sub{text-align:center;max-width:520px;margin:0 auto 12px;font-size:15px}.fonts-group{margin-top:20px}.fonts-group-title{color:var(--muted);margin:0 0 10px;font-size:15px}.fonts-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;display:grid}.fonts-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);text-align:center;flex-direction:column;align-items:center;gap:6px;padding:18px 14px 14px;display:flex;position:relative}.fonts-card.active{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.fonts-check{color:var(--accent-ink);font-weight:700;position:absolute;top:8px;right:10px}.fonts-sample{height:52px;color:var(--muted);justify-content:center;align-items:center;display:flex}.fonts-sample-web{color:var(--ink);font-size:36px;line-height:1}.fonts-sample-strokes{color:var(--ink);gap:2px;display:inline-flex}.fonts-sample-glyph{width:22px;height:30px}.fonts-label{color:var(--ink);font-size:15px;font-weight:600}.fonts-note{font-size:12px;line-height:1.4}.profile-head{align-items:center;gap:16px;margin-bottom:20px;display:flex}.profile-photo{object-fit:cover;border-radius:50%;flex-shrink:0;width:72px;height:72px}.profile-photo.fallback{background:var(--accent);color:#fff;place-items:center;font-size:30px;font-weight:700;display:grid}.profile-head h1{color:var(--ink);margin:0 0 2px;font-size:24px}.profile-head p{margin:0}.theme-toggle{gap:8px;margin-bottom:20px;display:flex}.theme-opt{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:10px;flex:1;padding:12px;font-size:15px}.theme-opt.active{background:var(--accent);color:#fff;border-color:var(--accent)}.paper-picker{grid-template-columns:repeat(2,1fr);gap:8px;margin-bottom:20px;display:grid}.paper-opt{text-align:left;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:10px;flex-direction:column;gap:2px;padding:10px 12px;display:flex}.paper-opt.active{border-color:var(--accent);background:var(--soft)}.paper-preview{aspect-ratio:260/90;border:1px solid var(--line);background:#fff;border-radius:6px;width:100%;margin-bottom:6px;display:block}.paper-opt-name{font-size:14px;font-weight:600}.paper-opt-note{font-size:11px;line-height:1.4}.signout-btn{border:1px solid var(--bad);width:100%;color:var(--bad);background:0 0;border-radius:10px;padding:12px;font-size:15px;font-weight:600}.build-info{text-align:center;margin:14px 0 0;font-size:12px}@media (width<=640px){.app{padding:0 12px 60px}.topbar{gap:8px 10px;padding:14px 0 12px}.brand-mark{width:38px;height:38px;font-size:18px}.brand-name{font-size:20px}.topbar .tagline{display:none}.landing-hero{padding:48px 20px 44px}.landing-feature-grid{grid-template-columns:1fr}.canvas-actions{max-width:100%}.canvas-actions button{min-height:60px;font-size:19px}}