@import "https://fonts.googleapis.com/css2?family=LXGW+WenKai+TC:wght@400;700&family=Noto+Sans+SC:wght@400;600;700;800;900&display=swap";@layer components;@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial;--tw-border-style:solid;--tw-outline-style:solid;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial;--tw-ease:initial}}}@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--ease-out:cubic-bezier(0, 0, .2, 1);--default-transition-duration:.15s;--default-transition-timing-function:cubic-bezier(.4, 0, .2, 1);--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer utilities{.visible{visibility:visible}.sr-only{clip-path:inset(50%);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.static{position:static}.container{width:100%}@media (width>=40rem){.container{max-width:40rem}}@media (width>=48rem){.container{max-width:48rem}}@media (width>=64rem){.container{max-width:64rem}}@media (width>=80rem){.container{max-width:80rem}}@media (width>=96rem){.container{max-width:96rem}}.block{display:block}.flex{display:flex}.grid{display:grid}.hidden{display:none}.inline{display:inline}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.resize{resize:both}.flex-wrap{flex-wrap:wrap}.border{border-style:var(--tw-border-style);border-width:1px}.outline{outline-style:var(--tw-outline-style);outline-width:1px}.blur{--tw-blur:blur(8px);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.ease-out{--tw-ease:var(--ease-out);transition-timing-function:var(--ease-out)}}:root{color:#20383a;font-synthesis:none;--ink:#20383a;--muted:#6f817d;--paper:#fffdfa;--accent:#14786e;--accent-dark:#0f5d56;--accent-soft:#d7ebe5;--coral:#e47865;--yellow:#f0c45b;--line:#d9e5e0;--shadow:0 24px 70px #234a421f;background:#eef5f1;font-family:Noto Sans SC,PingFang SC,system-ui,sans-serif}*{box-sizing:border-box}.sr-only{clip:rect(0, 0, 0, 0)!important;white-space:nowrap!important;border:0!important;width:1px!important;height:1px!important;margin:-1px!important;padding:0!important;position:absolute!important;overflow:hidden!important}html{background:#eef5f1}body{min-width:320px;min-height:100dvh;margin:0;overflow-x:hidden}button,a{font:inherit;-webkit-tap-highlight-color:transparent}button{color:inherit}button:focus-visible,a:focus-visible{outline-offset:3px;outline:3px solid #f0c45b}.app-shell{min-height:100dvh;padding:18px;position:relative}.home-shell{grid-template-rows:auto 1fr auto;gap:18px;max-width:1180px;margin:0 auto;display:grid}.top-nav,.lesson-header{justify-content:space-between;align-items:center;height:58px;display:flex}.wordmark{color:var(--ink);letter-spacing:.03em;align-items:center;gap:10px;font-weight:900;text-decoration:none;display:inline-flex}.wordmark i{background:var(--accent-dark);color:#fff;border-radius:12px 12px 12px 5px;place-items:center;width:38px;height:38px;font-family:LXGW WenKai TC,serif;font-size:22px;font-style:normal;display:grid;transform:rotate(-3deg)}.icon-button{border:1px solid var(--line);cursor:pointer;background:#ffffffb8;border-radius:50%;place-items:center;width:44px;height:44px;font-size:22px;display:grid}.icon-button:active{transform:scale(.94)}.nav-actions{gap:9px;display:flex}.home-card{background:var(--paper);min-height:min(650px,100dvh - 190px);box-shadow:var(--shadow);border:1px solid #ffffffb3;border-radius:34px;grid-template-columns:1.05fr .95fr;align-self:center;display:grid;overflow:hidden}.home-copy{flex-direction:column;justify-content:center;align-items:flex-start;padding:clamp(40px,6vw,82px);display:flex}.eyebrow{color:var(--accent-dark);letter-spacing:.18em;text-transform:uppercase;align-items:center;gap:9px;margin:0 0 22px;font-size:.78rem;font-weight:900;display:flex}.eyebrow-dot{background:var(--coral);border-radius:50% 50% 20%;width:8px;height:8px;transform:rotate(45deg)}.home-card h1{letter-spacing:-.075em;max-width:9ch;margin:0;font-size:clamp(3rem,7vw,6.2rem);font-weight:900;line-height:.98}.home-card h1 em{color:var(--coral);font-style:normal;position:relative}.home-card h1 em:after{content:"";background:var(--yellow);opacity:.65;border-radius:50%;height:8px;position:absolute;bottom:-3px;left:3%;right:-5%;transform:rotate(-2deg)}.home-description{max-width:22em;color:var(--muted);margin:27px 0 30px;font-family:LXGW WenKai TC,Kaiti SC,serif;font-size:clamp(1.05rem,2vw,1.28rem);line-height:1.8}.primary-button{background:var(--accent-dark);color:#fff;cursor:pointer;border:0;border-radius:17px;min-height:54px;padding:0 24px;font-weight:800;transition:transform .18s,box-shadow .18s,background .18s;box-shadow:0 10px 26px #0f5d5633}.primary-button:hover{background:var(--accent);transform:translateY(-2px);box-shadow:0 13px 30px #0f5d5642}.primary-button:active{transform:scale(.98)}.start-button{justify-content:space-between;align-items:center;min-width:176px;display:flex}.start-button span{font-size:1.4rem}.home-secondary-actions{grid-template-columns:1fr 1fr;gap:10px;width:min(100%,360px);margin-top:13px;display:grid}.secondary-action-button{min-height:56px;color:var(--accent-dark);cursor:pointer;background:#f7fbf9;border:1px solid #cdded8;border-radius:16px 16px 16px 6px;justify-content:flex-start;align-items:center;gap:9px;padding:8px 13px;font-size:.82rem;font-weight:900;transition:transform .18s,border-color .18s,background .18s;display:flex}.secondary-action-button span{background:var(--accent-soft);border-radius:10px 10px 10px 4px;flex:none;place-items:center;width:30px;height:30px;font-family:LXGW WenKai TC,serif;font-size:1.05rem;display:grid}.secondary-action-button:hover{border-color:var(--accent);background:#edf7f3;transform:translateY(-2px)}.secondary-action-button:active{transform:scale(.98)}.review-entry-button{min-height:44px;color:var(--accent-dark);text-underline-offset:5px;cursor:pointer;background:0 0;border:0;margin-top:12px;padding:8px 2px;font-weight:800;text-decoration:underline;text-decoration-thickness:2px}.review-entry-button:active{transform:translateY(1px)}.tiny-meta{color:#82918e;flex-wrap:wrap;gap:8px 16px;margin-top:20px;font-size:.72rem;font-weight:700;display:flex}.tiny-meta span+span:before{content:"·";color:#b9c7c2;margin-right:14px}.character-preview{isolation:isolate;background:#dfeee8;min-height:480px;position:relative;overflow:hidden}.character-preview:before{content:"";border:1px dashed #14786e33;border-radius:50%;position:absolute;inset:8%;transform:rotate(8deg)}.character-preview:after{content:"";z-index:-1;border:50px solid #ffffff47;border-radius:50%;width:340px;height:340px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.preview-stamp{aspect-ratio:1;background:var(--paper);color:var(--ink);border-radius:30px 30px 30px 10px;place-items:center;font-family:LXGW WenKai TC,Kaiti SC,serif;font-weight:700;display:grid;position:absolute;box-shadow:0 18px 40px #234a4221}.stamp-one{width:clamp(148px,19vw,230px);font-size:clamp(5rem,10vw,9rem);top:15%;left:12%;transform:rotate(-6deg)}.stamp-two{width:clamp(116px,15vw,176px);color:var(--accent);font-size:clamp(4rem,8vw,7rem);top:43%;right:7%;transform:rotate(7deg)}.stamp-three{width:clamp(92px,11vw,134px);color:var(--coral);font-size:clamp(3rem,6vw,5rem);bottom:8%;left:20%;transform:rotate(4deg)}.doodle-line{color:var(--yellow);font-size:7rem;position:absolute;top:16%;right:13%;transform:rotate(25deg)}.home-footer{min-height:64px;color:var(--muted);grid-template-columns:auto 1fr;align-items:center;gap:34px;display:grid}.home-footer div{grid-template-columns:auto auto;align-items:baseline;gap:8px;display:grid}.home-footer strong{color:var(--ink);font-size:1.3rem}.home-footer span{font-size:.72rem;font-weight:700}.home-footer p{justify-self:end;margin:0;font-family:LXGW WenKai TC,serif;font-size:.85rem}.app-shell.lesson-shell{max-width:900px;padding:max(8px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right)) max(8px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left));flex-direction:column;margin:0 auto;display:flex}.app-shell.writing-lesson-shell{height:100dvh;min-height:0;overflow:hidden}.lesson-header{flex:0 0 58px;gap:16px;width:100%;height:58px}.lesson-audio-actions{gap:8px;display:flex}.lesson-progress{text-align:center;flex:1;max-width:510px}.lesson-progress p{color:var(--muted);margin:7px 0 0;font-size:.72rem;font-weight:800}.quick-header{justify-content:center}.progress-track{background:#d9e5e0;border-radius:10px;height:8px;overflow:hidden}.progress-track span{border-radius:inherit;background:var(--accent);height:100%;transition:width .4s;display:block}.lesson-card{background:var(--paper);width:min(100%,720px);min-height:min(670px,100dvh - 110px);box-shadow:var(--shadow);text-align:center;border:1px solid #fffc;border-radius:32px 32px 32px 12px;flex-direction:column;justify-content:center;align-items:center;margin:16px auto 0;padding:clamp(28px,6vw,58px);display:flex;overflow:hidden}.lesson-card h1{letter-spacing:-.05em;margin:0;font-size:clamp(2rem,6vw,3.6rem);line-height:1.15}.recognition-card .eyebrow,.quiz-card .eyebrow,.writing-card .eyebrow{align-self:flex-start}.character-orbit{width:min(76vw,360px);height:18px;color:var(--yellow);justify-content:space-between;font-size:1.3rem;display:flex}.static-hanzi{place-items:center;display:grid}.static-hanzi svg{width:100%;height:100%}.hero-hanzi-heading{aspect-ratio:1;width:min(68vw,330px);margin:-8px 0}.hero-hanzi{width:100%;height:100%}.choice-hanzi{aspect-ratio:1;width:100%}.sound-button{color:var(--accent-dark);cursor:pointer;background:#edf7f3;border:1px solid #c9dfd8;border-radius:999px;margin:14px 0 20px;padding:9px 18px;font-weight:800}.sound-button span{background:var(--accent);color:#fff;border-radius:50%;place-items:center;width:22px;height:22px;margin-right:5px;display:inline-grid}.audio-retry-hint{color:#8f433b;margin:-12px 0 15px;font-size:.76rem;font-weight:700}.glyph-error{color:#8f433b;background:#fff2ef;border:1px solid #e3b1a8;border-radius:12px;flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;margin:0 0 12px;padding:9px 12px;font-size:.76rem;font-weight:800;display:flex}.glyph-error button{color:#fff;cursor:pointer;background:#8f433b;border:0;border-radius:10px;min-height:44px;padding:0 12px;font-weight:800}.glyph-error .glyph-back-button{color:#8f433b;background:#fff;border:1px solid #dca69e}.teaching-copy{color:#526966;max-width:30em;margin:0 0 28px;font-family:LXGW WenKai TC,Kaiti SC,serif;font-size:1.08rem;line-height:1.65}.teaching-copy p{margin:0 0 6px}.teaching-copy span{color:var(--coral);font-weight:700}.wide-button{min-width:min(100%,280px)}.gentle-hint{color:var(--muted);margin:14px 0 26px;font-family:LXGW WenKai TC,serif}.pinyin-prompt{color:var(--coral);font-family:LXGW WenKai TC,serif;font-weight:700}.choice-grid{grid-template-columns:repeat(3,1fr);gap:15px;width:min(100%,540px);display:grid}.character-choice{aspect-ratio:1;border:2px solid var(--line);cursor:pointer;background:#fff;border-radius:24px 24px 24px 8px;padding:8px;transition:transform .18s,border .18s,background .18s}.character-choice:hover{border-color:var(--accent);background:#f3faf7;transform:translateY(-4px)rotate(-1deg)}.character-choice.is-wrong{background:#fff2ef;border-color:#e4a095;animation:.34s gentle-shake}.stroke-viewer{background:var(--paper);width:min(100%,900px);height:auto;min-height:0;box-shadow:var(--shadow);text-align:center;border-radius:32px 32px 32px 12px;flex-direction:column;flex:auto;align-items:center;margin:8px auto 0;padding:clamp(18px,3vw,30px);display:flex;overflow:hidden}.stroke-main,.stroke-actions{width:100%}.stroke-main{flex:auto;grid-template-rows:auto minmax(0,1fr) auto;justify-items:center;min-height:0;display:grid;container-type:size}.stroke-actions{flex-direction:column;flex:none;align-items:center;display:flex}.stroke-viewer header p{color:var(--accent);letter-spacing:.15em;margin:0 0 7px;font-size:.75rem;font-weight:900}.stroke-viewer h2{margin:0;font-size:clamp(1.8rem,5vw,3rem)}.hanzi-target{aspect-ratio:1;background-color:#fbf9f4;background-image:linear-gradient(#e8ded2 1px,#0000 1px),linear-gradient(90deg,#e8ded2 1px,#0000 1px);background-position:50%;background-size:50% 50%;border-radius:22px;place-items:center;width:min(100%,460px);margin:12px auto;display:grid;position:relative;overflow:hidden}.hanzi-target svg{max-width:100%;height:auto}.writing-canvas>div{place-items:center;display:grid;position:absolute;inset:0}.hanzi-guide-layer{pointer-events:none}.hanzi-quiz-layer{z-index:1;touch-action:none}.hanzi-guide-layer svg,.hanzi-quiz-layer svg{display:block}.stroke-status{align-items:center;gap:12px;margin:2px 0 13px;display:flex}.stroke-status div{flex-direction:column;align-items:flex-start;gap:2px;display:flex}.stroke-status strong{color:var(--coral);font-size:1.25rem}.stroke-status small{color:var(--accent-dark);font-family:LXGW WenKai TC,serif}.stroke-status span{color:var(--muted);font-size:.75rem}.control-row{flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:17px;display:flex}.control-row button,.text-button{border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:13px;min-height:44px;padding:0 14px;font-size:.78rem;font-weight:800}.control-row button:disabled{opacity:.45;cursor:wait}.writing-choice-row{grid-template-columns:1fr 1fr;gap:12px;width:min(100%,430px);display:grid}.writing-choice-row button{flex-direction:column;justify-content:center;align-items:center;gap:2px;min-height:68px;padding:10px 16px;display:flex}.writing-choice-row button span{font-size:1rem}.writing-choice-row button small{opacity:.72;font-size:.7rem;font-weight:700}.secondary-button{color:var(--accent-dark);cursor:pointer;background:#edf7f3;border:1px solid #bfd5ce;border-radius:17px;font-weight:800;transition:transform .18s,border-color .18s,background .18s}.secondary-button:hover{border-color:var(--accent);background:#e1f1eb;transform:translateY(-2px)}.secondary-button:active{transform:scale(.98)}.secondary-button:disabled{opacity:.48;cursor:not-allowed;transform:none}.lesson-shell>.writing-card{flex:auto;height:auto;min-height:0;margin-top:8px;overflow:hidden}.writing-card{justify-content:flex-start;position:relative}.writing-card .eyebrow{margin-bottom:8px}.writing-card h1{align-self:flex-start;font-size:clamp(1.8rem,5vw,3rem)}.writing-card .gentle-hint{align-self:flex-start;margin:8px 0 0}.writing-practice{flex:auto;grid-template-rows:minmax(0,1fr) auto;width:100%;min-height:0;display:grid;container-type:size}.writing-practice .hanzi-target{align-self:center;width:min(100cqw,100cqh,520px);min-width:0;height:auto;min-height:0;max-height:none}.writing-practice.mistake-feedback-odd .hanzi-target{animation:.28s writing-nudge-a}.writing-practice.mistake-feedback-even .hanzi-target{animation:.28s writing-nudge-b}.writing-practice.correct-feedback-odd .hanzi-target:after,.writing-practice.correct-feedback-even .hanzi-target:after{content:"";border:3px solid var(--accent);pointer-events:none;border-radius:18px;position:absolute;inset:10%}.writing-practice.correct-feedback-odd .hanzi-target:after{animation:.32s forwards correct-ring-a}.writing-practice.correct-feedback-even .hanzi-target:after{animation:.32s forwards correct-ring-b}.writing-practice [role=status],.writing-practice [role=alert],.stroke-viewer [role=status],.stroke-viewer [role=alert]{color:var(--muted);margin:0;font-size:.78rem}.inline-error{background:#fff2ef;border:1px solid #e3b1a8;border-radius:14px;align-items:center;gap:12px;margin:6px 0 14px;padding:12px 14px;display:flex;color:#8f433b!important}.inline-error p{margin:0}.inline-error button{color:#fff;cursor:pointer;background:#8f433b;border:0;border-radius:10px;min-height:44px;padding:0 13px;font-weight:800}.inline-error .error-back-button{color:#8f433b;background:#fff;border:1px solid #dca69e}.stroke-hint{background:#fff6dc;border-radius:12px;padding:10px 14px;font-family:LXGW WenKai TC,serif;color:#765c20!important;margin:8px auto 0!important;font-size:.9rem!important}.correct-stroke-status{background:#e5f4ee;border-radius:999px;padding:8px 13px;font-weight:800;color:var(--accent-dark)!important;margin:8px auto 0!important}.inline-writing-complete{z-index:3;border-radius:inherit;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#fffdfac2;flex-direction:column;justify-content:center;align-items:center;padding:28px;animation:.36s cubic-bezier(.2,.9,.25,1.2) reward-pop;display:flex;position:absolute;inset:0}.inline-writing-complete strong{background:var(--accent-dark);color:#fff;border-radius:999px;margin-bottom:22px;padding:13px 22px;font-size:clamp(1.4rem,5vw,2.3rem);box-shadow:0 12px 30px #0f5d5638}.inline-writing-complete .text-button{min-height:44px}.primary-button:disabled{opacity:.48;box-shadow:none;cursor:not-allowed;transform:none}.feedback-card h1{max-width:12ch}.reward-burst{color:var(--yellow);align-items:center;gap:24px;margin-bottom:28px;font-size:2rem;display:flex}.reward-burst strong{background:var(--accent-soft);width:160px;height:160px;color:var(--accent-dark);border-radius:42% 58% 51% 49%;place-items:center;font-family:LXGW WenKai TC,serif;font-size:7rem;animation:.5s cubic-bezier(.2,.9,.25,1.3) reward-pop;display:grid}.feedback-card .teaching-copy{margin-top:18px}.text-button{color:var(--accent-dark);background:0 0;border-color:#0000;margin-top:12px}.unit-picker-shell{max-width:980px;margin:0 auto}.picker-header{grid-template-columns:54px 1fr;align-items:start;gap:16px;min-height:150px;padding:18px 8px 24px;display:grid}.picker-header .picker-back{margin-top:5px}.picker-header .eyebrow{margin-bottom:10px}.picker-header h1,.empty-picker h1{letter-spacing:-.07em;margin:0;font-size:clamp(2.5rem,7vw,4.7rem)}.picker-header p:last-child{color:var(--muted);margin:10px 0 0;font-family:LXGW WenKai TC,serif}.unit-picker-card{background:var(--paper);min-height:calc(100dvh - 196px);box-shadow:var(--shadow);border:1px solid #fffc;border-radius:32px 32px 32px 12px;padding:clamp(22px,4vw,38px)}.empty-picker{text-align:center;align-content:center;place-items:center;margin-top:18px;display:grid}.empty-picker p{color:var(--muted);font-family:LXGW WenKai TC,serif}.unit-picker-layout{gap:20px;display:grid}.unit-tabs{scrollbar-width:none;gap:8px;padding:3px 3px 13px;display:flex;overflow-x:auto}.unit-tabs::-webkit-scrollbar{display:none}.unit-tab{border:1px solid var(--line);min-width:132px;min-height:72px;color:var(--muted);text-align:left;cursor:pointer;background:#fff;border-radius:18px 18px 18px 6px;flex-direction:column;flex:none;justify-content:center;align-items:flex-start;gap:1px;padding:10px 15px;display:flex}.unit-tab strong{color:var(--ink);font-size:.88rem}.unit-tab span,.unit-tab small{font-size:.66rem;font-weight:700}.unit-tab small{color:#8a9996}.unit-tab.is-active{border-color:var(--accent-dark);background:var(--accent-dark);color:#fff;box-shadow:0 8px 18px #0f5d5629}.unit-tab.is-active strong,.unit-tab.is-active small{color:#fff}.unit-character-heading{justify-content:space-between;align-items:end;gap:18px;padding:0 3px 13px;display:flex}.unit-character-heading h2{letter-spacing:-.04em;margin:0;font-size:clamp(1.4rem,3vw,2rem)}.unit-character-heading p{color:var(--muted);margin:0;font-family:LXGW WenKai TC,serif;font-size:.78rem}.unit-character-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:13px;padding-top:10px;display:grid}.unit-character-button{border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:22px 22px 22px 8px;flex-direction:column;align-items:center;min-width:0;padding:10px 9px 12px;transition:transform .18s,border-color .18s,box-shadow .18s;display:flex;position:relative}.unit-character-button:hover{border-color:var(--accent);transform:translateY(-3px)rotate(-.5deg);box-shadow:0 10px 24px #234a421a}.unit-character-button:active{transform:scale(.97)}.unit-character-button.is-practiced{background:#f2f8f5}.picker-hanzi{aspect-ratio:1;width:100%}.character-pinyin{color:var(--muted);margin-top:2px;font-family:LXGW WenKai TC,serif;font-size:.78rem}.practice-check{background:var(--accent);color:#fff;border-radius:50%;place-items:center;width:23px;height:23px;font-size:.72rem;font-weight:900;display:grid;position:absolute;top:8px;right:8px}@media (width>=900px){.unit-picker-layout{grid-template-columns:205px minmax(0,1fr);gap:28px}.unit-tabs{flex-direction:column;padding:3px;position:sticky;top:18px;overflow:visible}.unit-tab{width:100%;min-height:82px}.unit-character-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}.settings-shell{max-width:820px;margin:0 auto}.simple-header{grid-template-columns:44px 1fr 44px;align-items:center;height:60px;display:grid}.simple-header .wordmark{justify-self:center}.settings-card{background:var(--paper);box-shadow:var(--shadow);border-radius:32px 32px 32px 12px;margin-top:16px;padding:clamp(30px,6vw,58px)}.settings-card h1{letter-spacing:-.06em;margin:0;font-size:clamp(2.2rem,6vw,4rem)}.settings-intro{max-width:36em;color:var(--muted);margin:18px 0 30px;font-family:LXGW WenKai TC,serif;font-size:1.05rem;line-height:1.75}.range-grid{grid-template-columns:1fr 1fr;gap:13px;margin-bottom:27px;display:grid}.range-option{border:2px solid var(--line);text-align:left;cursor:pointer;background:#fff;border-radius:20px 20px 20px 7px;flex-direction:column;justify-content:center;align-items:flex-start;gap:7px;min-height:112px;padding:20px 48px 20px 20px;display:flex;position:relative}.range-option strong{font-size:1.08rem}.range-option span{color:var(--muted);font-family:LXGW WenKai TC,serif;font-size:.85rem}.range-option i{width:27px;height:27px;color:var(--accent);background:#eef5f1;border-radius:50%;place-items:center;font-style:normal;display:grid;position:absolute;top:50%;right:18px;transform:translateY(-50%)}.range-option.is-selected{border-color:var(--accent);background:#f1f8f5}.range-option.is-selected i{background:var(--accent);color:#fff}.parent-note{color:#91a09c;margin:15px 0 0;font-size:.72rem}.settings-subheading{margin:30px 0 12px;font-size:1rem}.preference-list{gap:8px;margin-bottom:26px;display:grid}.preference-list button{border:1px solid var(--line);text-align:left;cursor:pointer;background:#fff;border-radius:16px;justify-content:space-between;align-items:center;min-height:68px;padding:12px 15px;display:flex}.preference-list span{flex-direction:column;gap:3px;display:flex}.preference-list small{color:var(--muted);font-family:LXGW WenKai TC,serif}.preference-list i{background:var(--accent-soft);min-width:44px;height:30px;color:var(--accent-dark);border-radius:999px;place-items:center;font-size:.72rem;font-style:normal;font-weight:900;display:grid}.danger-text-button{color:#9a4b43;cursor:pointer;background:0 0;border:0;min-height:44px;margin-top:16px;font-size:.78rem;font-weight:800}.reset-confirm{color:#74423d;background:#fff2ef;border:1px solid #e3b1a8;border-radius:16px;margin-top:16px;padding:16px}.reset-confirm p{margin:0 0 12px;font-family:LXGW WenKai TC,serif;line-height:1.6}.reset-confirm div{justify-content:flex-end;gap:8px;display:flex}.reset-confirm button{cursor:pointer;background:#fff;border:1px solid #dab0a9;border-radius:11px;min-height:44px;padding:0 14px;font-weight:800}.reset-confirm .confirm-reset{color:#fff;background:#9a4b43;border-color:#9a4b43}.report-shell{max-width:820px;margin:0 auto}.report-card{background:var(--paper);min-height:620px;box-shadow:var(--shadow);border-radius:32px 32px 32px 12px;margin-top:16px;padding:clamp(30px,6vw,58px)}.report-card h1{letter-spacing:-.07em;margin:0;font-size:clamp(2.4rem,7vw,4.5rem)}.report-card h2{margin:32px 0 14px;font-size:1.1rem}.report-stats{grid-template-columns:repeat(3,1fr);gap:12px;margin:28px 0;display:grid}.report-stats div{background:#edf6f2;border-radius:20px 20px 20px 7px;flex-direction:column;justify-content:center;min-height:112px;padding:18px;display:flex}.report-stats strong{color:var(--accent-dark);font-size:2rem}.report-stats span{color:var(--muted);font-size:.75rem;font-weight:800}.empty-report{text-align:center;border:1px dashed #c9d9d4;border-radius:24px;align-content:center;place-items:center;gap:18px;min-height:260px;display:grid}.empty-report span{background:var(--accent-soft);width:90px;height:90px;color:var(--accent-dark);border-radius:26px 26px 26px 8px;place-items:center;font-family:LXGW WenKai TC,serif;font-size:3.5rem;display:grid;transform:rotate(-4deg)}.empty-report p{max-width:18em;color:var(--muted);margin:0;font-family:LXGW WenKai TC,serif;line-height:1.7}.review-list{grid-template-columns:repeat(5,1fr);gap:10px;display:grid}.review-list div{border:1px solid var(--line);background:#fff;border-radius:16px;flex-direction:column;align-items:center;padding:14px 8px;display:flex}.review-list strong{font-family:LXGW WenKai TC,serif;font-size:2.6rem}.review-list span{color:var(--muted);font-size:.68rem}@keyframes gentle-shake{25%{transform:translate(-4px)}65%{transform:translate(4px)}}@keyframes writing-nudge-a{30%{transform:translate(-4px)}65%{transform:translate(4px)}}@keyframes writing-nudge-b{30%{transform:translate(-4px)}65%{transform:translate(4px)}}@keyframes correct-ring-a{0%{opacity:.55;transform:scale(.96)}to{opacity:0;transform:scale(1.02)}}@keyframes correct-ring-b{0%{opacity:.55;transform:scale(.96)}to{opacity:0;transform:scale(1.02)}}@keyframes reward-pop{0%{opacity:0;transform:scale(.65)rotate(-8deg)}to{opacity:1;transform:scale(1)rotate(0)}}@media (width<=720px){.app-shell{padding:12px}.home-shell{grid-template-rows:auto 1fr}.home-card{border-radius:28px 28px 28px 10px;grid-template-columns:1fr;min-height:calc(100dvh - 92px)}.home-copy{order:2;justify-content:flex-start;padding:32px 27px 26px}.home-card h1{font-size:clamp(3rem,15vw,4.8rem)}.home-description{margin:19px 0 23px}.home-secondary-actions{width:100%}.character-preview{order:1;min-height:32dvh}.stamp-one{width:132px;font-size:5rem;top:12%;left:10%}.stamp-two{width:104px;font-size:4rem;top:27%;right:8%}.stamp-three{width:80px;font-size:3rem;bottom:3%;left:42%}.home-footer{display:none}.lesson-card{border-radius:26px 26px 26px 9px;min-height:calc(100dvh - 94px);margin-top:8px;padding:26px 22px}.choice-grid{gap:9px}.character-choice{border-radius:18px 18px 18px 7px;font-size:4.2rem}.stroke-viewer{border-radius:26px 26px 26px 9px}.hanzi-target{margin:10px auto}.settings-card{border-radius:26px 26px 26px 9px;margin-top:8px;padding:28px 22px}.range-grid{grid-template-columns:1fr;gap:9px}.range-option{min-height:88px}.wordmark>span{display:none}.simple-header .wordmark>span{display:inline}.report-card{border-radius:26px 26px 26px 9px;margin-top:8px;padding:28px 22px}.report-stats{gap:7px}.report-stats div{min-height:94px;padding:12px}.review-list{grid-template-columns:repeat(3,1fr)}.picker-header{grid-template-columns:46px 1fr;gap:10px;min-height:128px;padding:10px 2px 18px}.picker-header h1{font-size:2.6rem}.picker-header p:last-child{font-size:.9rem}.unit-picker-card{border-radius:26px 26px 26px 9px;min-height:calc(100dvh - 158px);padding:18px 14px}.unit-character-heading{flex-direction:column;align-items:flex-start;gap:3px}.unit-character-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}.unit-character-button{border-radius:18px 18px 18px 7px;padding:7px 6px 10px}}@media (height<=740px) and (width<=720px){.character-preview{min-height:25dvh}.home-copy{padding-top:22px}.home-description{margin:13px 0 17px}.hero-hanzi{width:min(55vw,250px)}.teaching-copy{margin-bottom:16px}}@media (width<=767px){.app-shell.lesson-shell{padding:max(6px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) max(6px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left))}.stroke-viewer{padding:10px 14px}.stroke-viewer header p{margin-bottom:3px;font-size:.68rem}.stroke-viewer h2{font-size:clamp(1.35rem,6vw,1.65rem);line-height:1.15}.stroke-main .hanzi-target{align-self:center;width:min(100cqw,100cqh - 48px,460px);min-width:0;height:auto;min-height:0;max-height:none;margin:4px auto}.stroke-main:has(.inline-error) .hanzi-target{width:min(100cqw,100cqh - 104px,260px)}.stroke-actions{gap:5px}.stroke-status{justify-content:center;gap:8px;width:100%;min-height:38px;margin:0}.stroke-status div{gap:0}.stroke-status strong{font-size:1rem;line-height:1.1}.stroke-status small,.stroke-status span{font-size:.66rem}.writing-choice-row{gap:8px;width:100%}.writing-choice-row button{min-height:50px;padding:4px 10px}.writing-choice-row button span{font-size:.88rem}.writing-choice-row button small{font-size:.62rem}.stroke-actions .control-row{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;width:100%;margin:0;display:grid}.stroke-actions .control-row button{min-width:0;padding:0 4px;font-size:.7rem}.stroke-viewer .inline-error{justify-content:center;gap:6px;width:100%;margin:0;padding:5px 7px;font-size:.68rem;line-height:1.25}.stroke-viewer .inline-error p{flex:120px}.stroke-viewer .inline-error button{padding:0 8px}.lesson-shell>.writing-card{border-radius:26px 26px 26px 9px;padding:14px 18px}.writing-card .eyebrow{margin-bottom:4px;font-size:.68rem}.writing-card h1{font-size:clamp(1.45rem,6vw,1.75rem);line-height:1.12}.writing-card .gentle-hint{margin-top:4px;font-size:.82rem;line-height:1.3}.writing-practice .hanzi-target{width:min(100cqw,100cqh,460px);max-height:none;margin:6px auto}.writing-practice .inline-error{margin-bottom:0;padding:7px 9px}}@media (width>=768px){.stroke-viewer{grid-template-columns:minmax(0,1fr) clamp(210px,28vw,250px);align-items:stretch;gap:clamp(18px,3vw,28px);padding:clamp(22px,3vw,30px);display:grid}.stroke-main{height:100%}.stroke-main .hanzi-target{align-self:center;width:min(100cqw,100cqh - 76px,520px);min-width:0;height:auto;min-height:0;max-height:none;margin:10px auto}.stroke-actions{justify-content:center;align-items:stretch;gap:16px;width:100%}.stroke-status{text-align:left;flex-direction:column;align-items:flex-start;gap:5px;margin:0}.writing-choice-row{grid-template-columns:1fr;gap:10px;width:100%}.writing-choice-row button{min-height:64px}.stroke-actions .control-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;width:100%;margin:0;display:grid}.stroke-actions .control-row button{min-width:0;padding:0 8px}}@media (height<=450px) and (width>=500px){.stroke-viewer{grid-template-rows:minmax(0,1fr) auto;grid-template-columns:minmax(0,1fr) clamp(210px,34vw,250px);align-items:stretch;gap:6px 12px;padding:8px 12px;display:grid}.stroke-main{grid-area:1/1;height:100%}.stroke-viewer header p{margin-bottom:2px;font-size:.64rem}.stroke-viewer h2{font-size:1.25rem;line-height:1.1}.stroke-main .hanzi-target{width:min(100cqw,100cqh - 42px,460px);margin:3px auto}.stroke-actions{display:contents}.stroke-status{text-align:left;flex-direction:row;grid-area:1/2;justify-content:space-between;align-self:start;align-items:center;gap:6px;width:100%;min-height:38px;margin:0}.stroke-status div{gap:0}.stroke-status strong{font-size:.92rem;line-height:1.05}.stroke-status small,.stroke-status span{font-size:.62rem}.writing-choice-row{grid-area:2/1;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;width:100%}.writing-choice-row button{min-height:48px;padding:3px 6px}.stroke-actions .control-row{grid-area:1/2;grid-template-columns:repeat(2,minmax(0,1fr));align-self:end;gap:6px;width:100%;margin:0;display:grid}.stroke-actions .control-row button{min-width:0;min-height:44px;padding:0 4px;font-size:.68rem}.lesson-shell>.writing-card{padding:8px 16px}.writing-card .eyebrow{margin-bottom:2px;font-size:.62rem}.writing-card h1{font-size:1.25rem;line-height:1.08}.writing-card .gentle-hint{margin-top:2px;font-size:.72rem;line-height:1.2}.writing-practice .hanzi-target{margin:4px auto}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}.writing-practice.mistake-feedback-odd .hanzi-target,.writing-practice.mistake-feedback-even .hanzi-target{animation:none!important}}[data-reduce-motion=true] *,[data-reduce-motion=true] :before,[data-reduce-motion=true] :after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}[data-reduce-motion=true] .writing-practice.mistake-feedback-odd .hanzi-target,[data-reduce-motion=true] .writing-practice.mistake-feedback-even .hanzi-target{animation:none!important}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-ease{syntax:"*";inherits:false}