/* 냥냥보카 sketchbook: ballpoint ink on paper, highlighter accents, hand-drawn frames from doodle.js. */
@font-face{font-family:Pretendard;src:url('./assets/fonts/Pretendard-Regular.ttf') format('truetype');font-display:swap;font-weight:400}
@font-face{font-family:Pretendard;src:url('./assets/fonts/Pretendard-Bold.ttf') format('truetype');font-display:swap;font-weight:700 900}
@font-face{font-family:'Klee One';src:url('./assets/fonts/KleeOne-SemiBold.ttf') format('truetype');font-display:swap;font-weight:400 700}
:root{
  --paper:#f8f0e5;--sheet:#fffaf3;--ink:#3b3576;--ink-soft:#3b357699;--ink-faint:#3b357624;
  --hl:#ffbf9b;--hl-soft:#ffe2cf;--ring:#ffd8c1;--accent:#ee8b8b;--good:#2d7a57;--bad:#cf4f3c;--motion-bg:#fdf1e7;
  --hand:Gaegu,'Klee One',Pretendard,system-ui,sans-serif;--font:Pretendard,-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
  --ja:'Klee One','Hiragino Kaku Gothic ProN','Yu Gothic',sans-serif;--mono:ui-monospace,'SFMono-Regular',Consolas,monospace;
  --hand-border:22px 8px 20px 10px/10px 20px 8px 22px;
}
body[data-language=en]{--paper:#efefeb;--sheet:#fdfdfb;--ink:#27282f;--ink-soft:#27282f99;--ink-faint:#27282f22;--hl:#ffd765;--hl-soft:#fff0bf;--ring:#ffe8a3;--accent:#b97c4c;--motion-bg:#fefefe}
*{box-sizing:border-box}
html{background:var(--paper);transition:background .4s}
body{margin:0;min-height:100vh;color:var(--ink);font-family:var(--font);font-size:15px;-webkit-font-smoothing:antialiased;background:var(--paper)}
/* Faint pencil hatching scattered over the paper. */
body:before{content:'';position:fixed;inset:0;z-index:-1;pointer-events:none;background:var(--ink);opacity:.07;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='260' height='260' fill='none' stroke='%23000' stroke-linecap='round'%3E%3Cpath d='M20 40l26-15M24 46l26-15M28 52l26-15M32 58l20-12M180 30l30-17M184 37l30-17M188 44l24-14M120 150l22-13M124 157l22-13M128 164l18-10M30 210l28-16M35 217l28-16M40 224l22-13M200 190l26-15M205 197l26-15M210 204l20-12'/%3E%3C/svg%3E");mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='260' height='260' fill='none' stroke='%23000' stroke-linecap='round'%3E%3Cpath d='M20 40l26-15M24 46l26-15M28 52l26-15M32 58l20-12M180 30l30-17M184 37l30-17M188 44l24-14M120 150l22-13M124 157l22-13M128 164l18-10M30 210l28-16M35 217l28-16M40 224l22-13M200 190l26-15M205 197l26-15M210 204l20-12'/%3E%3C/svg%3E")}
button,a,input{font:inherit;color:inherit}button{border:0;background:none;cursor:pointer;padding:0}button:disabled{cursor:default;opacity:.45}
button:focus-visible,a:focus-visible{outline:2px dashed var(--ink);outline-offset:4px;border-radius:8px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
[lang=ja]{font-family:var(--ja)}
img{max-width:100%}

/* Hand-drawn frames (doodle.js prepends an SVG to every .sk element). */
.sk{position:relative;isolation:isolate}
.sk>.sk-svg{position:absolute;left:-6px;top:-6px;z-index:-1;pointer-events:none;overflow:visible}
.sk-line{fill:none;stroke:var(--sk-stroke,var(--ink));stroke-width:var(--sk-w,1.7);stroke-linecap:round;stroke-linejoin:round}
.sk-line2{stroke-width:calc(var(--sk-w,1.7)*.6);opacity:.7}
.sk-bg{fill:var(--sk-fill,var(--sheet))}
.sk-hatch-lines{fill:none;stroke:var(--sk-stroke,var(--ink));stroke-width:1;opacity:.28}
.ico{width:1em;height:1em;flex-shrink:0}
.hl{background:linear-gradient(100deg,transparent 2%,var(--hl) 4% 96%,transparent 98%) 0 72%/0 46% no-repeat;animation:hl-in .7s .35s cubic-bezier(.6,0,.3,1) forwards;padding:0 .08em;margin:0 -.08em;border-radius:4px}
@keyframes hl-in{to{background-size:100% 46%}}

/* Gaegu sets Hangul loosely; pull hand-lettered text together. */
.brand,.nav-link,.hero h1,.hero-sub,.primary,.secondary,.text-button,.language-switch button,.level-choice strong,.pace button,.demo-chip,.demo-word,.planner-title,.planner-bubble,.planner-row,.day-name,.page h1,.review-count,.review-row .when,.empty p,.timeline,.help-list strong,.study-top,.choice,.hint-line,.answer-stamp,.study-meaning,.summary h1,.word-chip,.toast,.boot-title,.boot p,.load-error p,.footer-brand{letter-spacing:-.04em}

/* Buttons. */
.primary{--sk-fill:var(--ink);--sk-stroke:var(--ink);display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:13px 26px 14px;color:var(--sheet);font:700 24px/1 var(--hand);border-radius:16px;transition:transform .15s}
.primary .ico-arrow{width:24px;height:20px;transition:transform .2s cubic-bezier(.2,.8,.2,1)}
.primary:not(:disabled):hover .ico-arrow{transform:translateX(5px)}
.primary:not(:disabled):active,.secondary:active{transform:translateY(2px) rotate(-.6deg)}
.primary:disabled{--sk-fill:var(--ink-soft);opacity:.55}
.secondary{display:inline-flex;align-items:center;justify-content:center;padding:12px 24px;font:700 22px/1 var(--hand);border-radius:16px}
.text-button{font:20px var(--hand);text-decoration:underline wavy var(--ink-soft) 1px;text-underline-offset:5px}

/* Shell, header, footer. */
.shell{max-width:1180px;margin:auto;padding:0 40px}
.header{height:84px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:8px;font:700 26px/1 var(--hand);letter-spacing:-.3px;white-space:nowrap}
.brand b{color:var(--ink-soft)}
.brand-cat{width:44px;height:44px;transform:rotate(-8deg);transition:transform .25s cubic-bezier(.2,1.6,.4,1)}
.brand:hover .brand-cat{transform:rotate(6deg) scale(1.08)}
.nav{display:flex;align-items:center;gap:22px}
.nav-link{font:21px var(--hand);color:var(--ink-soft);padding:6px 2px;display:inline-flex;align-items:center}

.nav-link.active{position:relative;color:var(--ink);font-weight:700}
.nav-link.active:after{content:'';position:absolute;left:0;right:0;bottom:0;height:9px;background:var(--hl);-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 60 8' preserveAspectRatio='none'%3E%3Cpath d='M1 5c8-3 14 2 22-1s14-3 22 0 10 1 14-1' fill='none' stroke='%23000' stroke-width='5' stroke-linecap='round'/%3E%3C/svg%3E") 0 0/100% 100%;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 60 8' preserveAspectRatio='none'%3E%3Cpath d='M1 5c8-3 14 2 22-1s14-3 22 0 10 1 14-1' fill='none' stroke='%23000' stroke-width='5' stroke-linecap='round'/%3E%3C/svg%3E") 0 0/100% 100%;z-index:-1}
.badge{display:inline-grid;place-items:center;min-width:20px;height:20px;border-radius:50%;background:var(--bad);color:#fff;font:700 11px var(--font);margin-left:5px;padding:0 5px;transform:rotate(8deg)}
.sound{width:40px;height:40px;display:grid;place-items:center;border-radius:50%}.sound .ico{width:20px;height:20px}
.sound[aria-pressed=false]{color:var(--ink-soft)}
.footer{position:relative;display:flex;flex-direction:column;align-items:center;gap:22px;padding:34px 0 44px;margin-top:20px;color:var(--ink-soft)}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0 0}
.app-banner{position:relative;display:flex;align-items:center;gap:10px;min-width:0;padding:6px 8px 6px 10px;border-radius:16px}
.app-banner>img{width:34px;height:34px;object-fit:contain;flex:none}
.app-banner strong{font:700 18px/1 var(--hand);color:var(--ink);letter-spacing:-.03em;white-space:nowrap}
.footer-row{display:flex;align-items:center;justify-content:center;gap:12px}
.stores{grid-area:stores;display:flex;gap:6px}
.stores a{display:inline-flex;align-items:center;gap:5px;padding:5px 10px 5px 8px;border-radius:999px;background:var(--ink);color:var(--sheet);font:700 12px/1 var(--font);text-decoration:none;white-space:nowrap;transition:transform .15s}
.stores a:hover{transform:translateY(-1px) rotate(-1deg)}
.stores a:focus-visible{outline:2px solid var(--hl);outline-offset:2px}
.stores svg{width:13px;height:13px;fill:currentColor}
.footer:before{content:'';position:absolute;top:0;left:50%;width:min(100%,900px);height:2px;transform:translateX(-50%);background:var(--ink-faint);border-radius:2px}
.footer-logo{height:30px;width:auto}
.footer-line{position:static!important;width:62px;height:48px;opacity:.5!important}
.footer-cat{width:38px;height:38px}
.footer-brand{font:700 20px var(--hand);color:var(--ink)}
.storage-note{color:var(--bad);font-size:12px}

/* Cat clips sit on a disc of their own backdrop colour with a soft coloured ring, no ink outline. */
.motion{position:relative;display:block;flex-shrink:0;aspect-ratio:1;border-radius:50%;overflow:hidden;background:var(--motion-bg);box-shadow:0 0 0 5px var(--ring),0 12px 22px -14px var(--ink)}
.motion video,.motion img{display:block;width:100%;height:100%;object-fit:cover;transform:scale(.94);-webkit-mask:radial-gradient(circle closest-side,#000 84%,transparent 100%);mask:radial-gradient(circle closest-side,#000 84%,transparent 100%)}
.character{object-fit:contain}
/* Ink line-art poses of the current cat (모찌냥 outlines, 쿠키냥 silhouettes), tinted by the ink colour. */
.line-cat{position:absolute;display:block;pointer-events:none;background:var(--ink);opacity:.2;-webkit-mask:var(--line) center/contain no-repeat;mask:var(--line) center/contain no-repeat}
body[data-language=en] .line-cat{opacity:.12}

/* Boot splash. */
.boot{min-height:100svh;display:grid;place-content:center;justify-items:center;gap:16px}
.boot-motion{width:min(190px,48vw)}
.boot-title{font:700 30px var(--hand)}
.boot-bar{width:min(220px,60vw);height:10px;border-radius:10px;border:1.6px solid var(--ink);overflow:hidden;background:var(--sheet)}
.boot-bar span{display:block;height:100%;background:repeating-linear-gradient(-45deg,var(--ink) 0 2px,transparent 2px 6px),var(--hl);transform:scaleX(0);transform-origin:left;transition:transform .25s ease-out}
.boot p{margin:0;font:18px var(--hand);color:var(--ink-soft)}
.boot .loading-character{width:120px;height:120px}

/* Screen change: the new page settles onto the desk. */
#app[data-enter=true] main{animation:page-in .5s cubic-bezier(.2,.8,.2,1) both}
@keyframes page-in{from{opacity:0;transform:translateY(16px) rotate(-.5deg)}}

/* Home hero. */
.hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);grid-template-areas:'title demo' 'setup demo';column-gap:56px;align-items:start;padding:24px 0 52px}
.hero-title{grid-area:title;position:relative;padding-top:24px}
.hero-line{right:-2%;top:96px;width:120px;height:120px;transform:rotate(8deg);animation:boil .6s steps(1) infinite}
.hero h1{font:700 clamp(58px,6.6vw,92px)/.95 var(--hand);letter-spacing:-2px;margin:0}
.hero-sub{margin:16px 0 0;font:26px var(--hand);color:var(--ink-soft)}
.setup{grid-area:setup;margin-top:40px;padding:24px 22px 22px;border-radius:22px}
.setup-mascot{position:absolute;right:14px;top:-84px;width:100px;height:100px;object-fit:contain;pointer-events:none;animation:peek .5s .2s cubic-bezier(.2,1.5,.4,1) both}
@keyframes peek{from{transform:translateY(26px) rotate(8deg);opacity:0}}
.language-switch{display:flex;gap:6px}
.language-switch button{display:inline-flex;align-items:center;gap:7px;padding:6px 13px 7px;border-radius:12px;font:700 18px/1 var(--hand);color:var(--ink-soft)}
.language-switch button.active{--sk-fill:var(--hl);color:var(--ink)}
.language-switch .glyph{font:700 15px var(--ja)}
.level-options{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;margin:18px 0}
.level-choice{display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 2px 9px;border-radius:14px}
.level-choice.active{--sk-fill:var(--hl)}
.level-art{display:block;width:54px;height:54px;object-fit:contain;transition:transform .25s cubic-bezier(.2,1.6,.4,1)}
.level-choice:hover .level-art{transform:translateY(-4px) rotate(-6deg)}
.level-choice.active .level-art{transform:scale(1.1) rotate(-3deg)}
.level-choice strong{font:700 21px/1 var(--hand)}
.level-choice.locked{cursor:help;--sk-stroke:var(--ink-soft);color:var(--ink-soft)}
.level-choice.locked .level-art{filter:grayscale(1);opacity:.4}
.level-choice.locked:hover .level-art{transform:rotate(-4deg)}
.level-choice .ico-lock{position:absolute;top:6px;right:6px;width:17px;height:17px;color:var(--ink)}
.level-choice.locked:hover .ico-lock{animation:jiggle .35s}
@keyframes jiggle{25%{transform:rotate(-14deg)}75%{transform:rotate(12deg)}}
.pace{display:flex;gap:10px;margin-bottom:20px}
.pace button{flex:1;padding:9px 0 10px;border-radius:14px;font:700 22px/1 var(--hand);color:var(--ink-soft)}
.pace button small{font-size:15px;margin-left:2px}
.pace button.active{--sk-fill:var(--hl);color:var(--ink)}
.setup .primary{width:100%}

/* Home motion graphic: looping 3-second round. */
.showcase{grid-area:demo;position:relative;padding:34px 0 10px}
.demo{position:relative;min-height:560px}
.doodle-field{position:absolute;inset:-10px -20px;pointer-events:none}
.doodle{position:absolute;width:34px;height:34px;color:var(--ink);stroke-width:1.6;animation:float 5s ease-in-out infinite alternate,boil .48s steps(1) infinite}
.doodle.d1{left:6%;top:6%}.doodle.d2{right:4%;top:44%;color:var(--bad);width:28px;animation-delay:-1.4s,0s}
.doodle.d3{left:2%;top:58%;width:30px;animation-delay:-2.6s,-.2s}.doodle.d4{right:12%;bottom:2%;width:44px;animation-delay:-.6s,-.1s}
.doodle.d5{right:16%;top:0;width:24px;animation-delay:-3s,-.3s}
.glyph-float{position:absolute;font:700 40px var(--ja);font-style:normal;color:var(--ink-faint);animation:float 6s ease-in-out infinite alternate,boil .6s steps(1) infinite}
body[data-language=en] .glyph-float{font-family:var(--hand);font-size:52px}
.glyph-float.g1{left:10%;bottom:16%}.glyph-float.g2{right:2%;top:16%;animation-delay:-2s,-.3s}
@keyframes float{to{translate:0 -14px}}
@keyframes boil{0%{rotate:-3deg}33%{rotate:2deg}66%{rotate:-.5deg}}
.demo-stage{position:relative;width:min(330px,72%);margin:0 auto}
.demo-card{padding:12px 12px 10px;border-radius:18px;transform:rotate(-2.5deg)}
.demo-img{display:block;width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:10px;background:var(--paper)}
.demo[data-lang=en] .demo-img{aspect-ratio:1}
.demo-word{display:block;text-align:center;font:700 30px/1.3 var(--hand)}
.demo-word:empty{display:none}
.demo-card.demo-in{animation:card-in .45s cubic-bezier(.2,1.2,.4,1) both}
.demo-card.demo-out{animation:card-out .38s cubic-bezier(.6,0,.8,.4) both}
@keyframes card-in{from{opacity:0;transform:translateX(70px) rotate(10deg)}}
@keyframes card-out{to{opacity:0;transform:translate(-90px,20px) rotate(-16deg)}}
.demo-timer{position:absolute;top:-30px;right:-50px;width:108px;height:108px;border-radius:50%;background:var(--sheet);transform:rotate(6deg)}
.demo-timer svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.demo-ring{fill:none;stroke:var(--ink);stroke-width:2.2;stroke-linecap:round}.demo-ring2{stroke-width:1.2;opacity:.6}
.demo-ring-progress{fill:none;stroke:var(--hl);stroke-width:13;stroke-linecap:round;stroke-dasharray:100}
.demo-digit{position:absolute;inset:0;display:grid;place-items:center;font:700 58px/1 var(--hand);padding-bottom:4px}
.demo-done .demo-digit{color:var(--good)}
.demo-cat{position:absolute;left:-62px;bottom:-26px;width:128px;transform:rotate(-6deg)}
.demo-chips{display:grid;grid-template-columns:1fr 1fr;gap:12px;width:min(420px,92%);margin:40px auto 0}
.demo-chip{display:flex;align-items:center;justify-content:center;min-height:50px;padding:8px 10px;border-radius:14px;font:700 23px/1.15 var(--hand);text-align:center}
.demo-chip.demo-right{--sk-fill:var(--hl)}
.demo-chip.demo-tap{animation:chip-tap .4s cubic-bezier(.2,1.6,.4,1)}
@keyframes chip-tap{40%{transform:scale(.92) rotate(-2deg)}}
.demo-paw{position:absolute;left:0;top:0;width:46px;height:46px;color:var(--ink);opacity:0;pointer-events:none;transform:translate(70%,520px);transition:transform .5s cubic-bezier(.3,.9,.3,1),opacity .2s}
.demo-paw.demo-paw-tap{opacity:1}
.demo-paw-tap .paw{animation:paw-tap .3s .38s ease-in-out}
@keyframes paw-tap{50%{transform:scale(.78) rotate(-12deg)}}

/* Weekly planner. */
.planner{margin:8px 0 34px;padding:30px 28px 24px;border-radius:24px}
.planner-line{top:-58px;right:7%;width:110px;height:90px;opacity:.35}
.tape{position:absolute;top:-13px;left:50%;width:120px;height:26px;margin-left:-60px;background:var(--hl);opacity:.75;transform:rotate(-3deg);clip-path:polygon(3% 0,97% 4%,100% 30%,96% 52%,100% 78%,97% 100%,2% 96%,0 70%,4% 48%,0 22%)}
.planner-head{display:flex;align-items:baseline;gap:12px;margin-bottom:16px}
.planner-title{font:700 30px/1 var(--hand)}
.planner-range{font:12px var(--mono);color:var(--ink-soft)}
.planner-body{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.25fr);grid-template-areas:'hello week' 'level stats';gap:24px 40px;align-items:center}
.planner-hello{grid-area:hello;display:flex;align-items:center;gap:12px}
.planner-cat{width:86px}
@keyframes bob{0%,100%{transform:rotate(-4deg)}50%{transform:translateY(-4px) rotate(4deg)}}
.planner-bubble{position:relative;margin:0;padding:10px 16px 12px;background:var(--hl-soft);border:1.6px solid var(--ink);border-radius:var(--hand-border);font:700 21px/1.2 var(--hand)}
.week-days{grid-area:week;list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(7,1fr);gap:4px;text-align:center}
.day{display:flex;flex-direction:column;align-items:center;gap:6px}
.day-name{font:18px/1 var(--hand);color:var(--ink-soft)}
.day:nth-child(6) .day-name{color:#4a73b5}.day:nth-child(7) .day-name{color:var(--bad)}
.day-stamp{display:block;width:42px;height:42px;padding:9px;border-radius:50%;border:1.6px dashed var(--ink-faint)}
.day-done .day-stamp{border:1.6px solid var(--ink);background:var(--hl-soft);color:var(--ink);transform:rotate(-12deg)}
.day-goal .day-stamp{border:0;background:var(--ink);color:var(--hl);transform:rotate(9deg)}
.day-future .day-stamp{opacity:.5}
.day.today .day-name{font-weight:700;color:var(--ink)}
.day.today .day-name:after{content:'';display:block;height:3px;margin-top:3px;border-radius:3px;background:var(--hl)}
.day.today:not(.day-done):not(.day-goal) .day-stamp{border-color:var(--ink);animation:wait 1.6s ease-in-out infinite}
@keyframes wait{50%{transform:scale(1.1) rotate(8deg)}}
#app[data-enter=true] .day-done .day-stamp,#app[data-enter=true] .day-goal .day-stamp{animation:stamp .45s cubic-bezier(.2,1.6,.4,1) both}
.day:nth-child(2) .day-stamp{animation-delay:.08s}.day:nth-child(3) .day-stamp{animation-delay:.16s}.day:nth-child(4) .day-stamp{animation-delay:.24s}
.day:nth-child(5) .day-stamp{animation-delay:.32s}.day:nth-child(6) .day-stamp{animation-delay:.4s}.day:nth-child(7) .day-stamp{animation-delay:.48s}
@keyframes stamp{from{opacity:0;scale:1.8}}
.paw{display:block;width:100%;height:100%}
.planner-level{grid-area:level}
.planner-row{display:flex;justify-content:space-between;align-items:baseline;gap:8px}
.planner-row strong{font:700 24px/1 var(--hand)}.planner-row>span{font:700 20px var(--hand)}
.planner-row.small{margin-top:10px;font:12px var(--mono);color:var(--ink-soft)}
.planner-row.small>span{font:inherit}
.unlock-hint{display:inline-flex;align-items:center;gap:4px;color:var(--ink)}.unlock-hint .ico{width:14px;height:14px}
.paw-track{position:relative;height:16px;margin:12px 13px 0;background:var(--sheet);border:1.6px solid var(--ink);border-radius:16px}
.paw-track span{display:block;height:100%;min-width:14px;border-radius:16px;background:repeating-linear-gradient(-45deg,var(--ink) 0 1.6px,transparent 1.6px 6px),var(--hl);transition:width .6s cubic-bezier(.2,.8,.2,1)}
.paw-track i{position:absolute;top:50%;width:30px;height:30px;padding:5px;border-radius:50%;background:var(--sheet);color:var(--ink);border:1.6px solid var(--ink);transform:translate(-50%,-50%) rotate(-14deg)}
.planner-stats{grid-area:stats;display:grid;grid-template-columns:repeat(4,1fr);margin:0;text-align:center}
.planner-stats>div+div{border-left:1.5px dashed var(--ink-faint)}
.planner-stats dt{font-size:11px;color:var(--ink-soft)}
.planner-stats dd{margin:4px 0 0;font:700 36px/1 var(--hand)}.planner-stats dd small{font-size:18px;margin-left:1px}

/* 모찌냥 × 쿠키냥 comic reel. */
.story{margin:6px 0 30px}
.story-title{margin:0 0 18px;text-align:center;font:700 32px/1 var(--hand);letter-spacing:-.04em}
.story-title span{color:var(--accent);margin:0 4px}
.story-reel{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;padding:6px}
.story-frame{margin:0;padding:8px;border-radius:16px}
.story-frame:nth-child(odd){transform:rotate(-1.5deg)}.story-frame:nth-child(even){transform:rotate(1.2deg) translateY(10px)}
.story-frame video{display:block;width:100%;aspect-ratio:1;object-fit:cover;border-radius:10px;background:var(--paper)}

/* Reviews and help. */
.page{max-width:780px;margin:auto;padding:12px 0 30px}
.page-head{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:12px}
.page h1{font:700 clamp(54px,7vw,76px)/1 var(--hand);margin:0;letter-spacing:-1px}
.page-cat{width:112px;height:112px;animation:bob 2.8s ease-in-out infinite}
.page-motion{width:128px}
.review-summary{display:flex;align-items:center;gap:16px;margin:22px 0 20px;padding:14px 20px;border-radius:20px}
.summary-cat{width:64px;height:64px}
.review-count{display:flex;align-items:baseline;gap:8px;margin-right:auto}
.review-count strong{font:700 52px/1 var(--hand)}.review-count span{font:20px var(--hand);color:var(--ink-soft)}
.review-list{list-style:none;margin:0;padding:0}
.review-row{display:grid;grid-template-columns:46px 1fr auto;gap:14px;align-items:center;padding:10px 4px;border-bottom:1.5px dashed var(--ink-faint)}
.row-cat{width:46px;height:46px}
.review-row .word{font-size:20px;font-weight:700}.review-row .word[lang=en]{font-family:var(--font)}
.review-row .meaning{font-size:13px;color:var(--ink-soft);margin-top:2px}
.review-row .when{text-align:right;font:700 19px var(--hand)}.review-row .when small{display:block;font:11px var(--font);color:var(--ink-soft)}
.empty{display:flex;flex-direction:column;align-items:center;gap:10px;padding:26px 0}
.empty-motion{width:150px}
.reviews-line{position:static!important;margin:34px auto 0;width:150px;height:110px}.empty p{margin:0;font:21px var(--hand);color:var(--ink-soft)}
.timeline{list-style:none;display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:6px;margin:30px 0 0;padding:0;font:19px var(--hand);color:var(--ink-soft)}
.timeline li+li:before{content:'→';margin-right:6px}
.timeline b{color:var(--ink);background:var(--hl-soft);padding:0 6px;border-radius:6px}
.help-list{list-style:none;margin:18px 0 28px;padding:0;display:grid;gap:14px}
.help-list li{display:flex;align-items:center;gap:16px;padding:14px 20px;border-radius:18px}
.help-list li:nth-child(odd){transform:rotate(-.5deg)}.help-list li:nth-child(even){transform:rotate(.4deg)}
.help-num{width:42px;height:42px;flex-shrink:0;display:grid;place-items:center;border-radius:50%;font:700 24px/1 var(--hand)}.help-num .ico{width:20px;height:20px}
.help-list li:nth-child(4){--sk-fill:var(--hl-soft)}
.help-list strong{display:block;font:700 23px/1.2 var(--hand)}.help-list small{display:block;margin-top:3px;font-size:12px;color:var(--ink-soft)}

/* Study session: a big card on the left, the cat and the choices beside it. */
.study{max-width:1040px;margin:auto;padding-bottom:20px}
.study-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:4px 0}
.study-top .back{font:20px var(--hand);color:var(--ink-soft)}
.study-level{font:700 22px var(--hand)}.study-top .mono{font:13px var(--mono);color:var(--ink-soft)}
.session-track{display:flex;justify-content:center;gap:7px;margin:2px 0 10px}
.session-track span{width:11px;height:11px;border-radius:50%;border:1.6px solid var(--ink);transition:transform .2s,background .2s}
.session-track .done{background:var(--ink)}.session-track .now{background:var(--hl);transform:scale(1.35)}
.quiz-content{position:relative}
.quiz-material{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,390px);grid-template-areas:'case comp' 'case choices';grid-template-rows:auto 1fr;gap:20px 44px;align-items:start}
.quiz-line{left:-30px;bottom:-10px;width:200px;height:150px;opacity:.14}
.word-case{grid-area:case;display:flex;flex-direction:column;align-items:center;gap:16px;padding:34px 0 0}
.case-slot{position:relative;max-width:100%}
.case-slot .tape{z-index:2;top:-12px}
.case-insert{display:grid;place-items:center}
.case-question .case-insert{animation:card-in .4s cubic-bezier(.2,1.2,.4,1) both}
.study-card{display:flex;flex-direction:column;align-items:center;padding:12px;border-radius:20px;transform:rotate(-1.2deg)}
.study-image{display:block;height:min(56vh,540px);width:auto;max-width:100%;object-fit:contain;border-radius:12px;background:var(--paper)}
body[data-language=en] .study-image{height:min(44vh,420px)}
.study-copy{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:10px;padding:0 4px}
.study-word{margin:0;font:700 32px/1.1 var(--font);letter-spacing:-.5px}
.study-reading{margin:4px 0 0;font:13px var(--mono);color:var(--ink-soft)}
.study-meaning{margin:4px 0 0;font:700 24px var(--hand)}
.round-audio{width:46px;height:46px;flex-shrink:0;display:grid;place-items:center;border-radius:50%}.round-audio .ico{width:22px;height:22px}
.case-timer{position:absolute;top:-30px;right:-58px;z-index:3}
.clock{position:relative;width:128px;height:128px}
.timer-orbit{position:absolute;inset:0;width:100%;height:100%;overflow:visible;transform:rotate(-4deg)}
.orbit-track{fill:var(--sheet);stroke:var(--ink-faint);stroke-width:3}
.orbit-progress{fill:none;stroke:var(--hl);stroke-width:15;stroke-linecap:round;stroke-dasharray:100;transform:rotate(-90deg);transform-origin:70px 70px}
.orbit-sketch{fill:none;stroke:var(--ink);stroke-width:2.2;stroke-linecap:round}
.clock-value{position:absolute;inset:0;display:grid;place-items:center;font:700 72px/1 var(--hand);padding-bottom:6px}
.clock[data-seconds="1"] .clock-value{color:var(--bad);animation:shake .3s infinite}
.clock[data-seconds="1"] .orbit-progress{stroke:#f6a08f}
@keyframes shake{25%{transform:rotate(-5deg)}75%{transform:rotate(5deg)}}
.result-dial{width:112px;height:112px;display:grid;place-items:center;border-radius:50%;background:var(--sheet);box-shadow:0 0 0 2px var(--ink),0 0 0 7px var(--sheet)}
.result-dial .ico{width:78px;height:78px;stroke-width:2.6;color:var(--good)}
.case-wrong .result-dial .ico{color:var(--bad)}
.result-dial path{stroke-dasharray:40;stroke-dashoffset:40;animation:ink .4s ease-out forwards}.result-dial path+path{animation-delay:.15s}
@keyframes ink{to{stroke-dashoffset:0}}
.countdown-bar{width:min(100%,440px);height:10px;border:1.6px solid var(--ink);border-radius:10px;overflow:hidden;background:var(--sheet)}
.countdown-bar span{display:block;height:100%;background:repeating-linear-gradient(-45deg,var(--ink) 0 1.6px,transparent 1.6px 6px),var(--hl);transform-origin:left}
.answer-stamp{position:absolute;left:50%;top:50%;z-index:2;min-width:150px;padding:10px 22px 12px;text-align:center;background:color-mix(in srgb,var(--sheet) 93%,transparent);border:3px solid currentColor;border-radius:var(--hand-border);transform:translate(-50%,-50%) rotate(-8deg);animation:stamp-in .38s cubic-bezier(.2,1.6,.4,1) both}
.answer-stamp strong{display:block;font:700 34px/1.05 var(--hand);white-space:nowrap}
.answer-stamp .study-meaning{word-break:keep-all;overflow-wrap:break-word;text-wrap:balance;max-width:11em;margin-inline:auto}
.answer-stamp .study-meaning{color:var(--ink)}
.stamp-correct{color:var(--good)}.stamp-wrong{color:var(--bad)}
@keyframes stamp-in{from{opacity:0;transform:translate(-50%,-50%) rotate(-20deg) scale(1.7)}}
.companion{grid-area:comp;display:flex;align-items:center;gap:16px;padding-top:34px}
.companion-motion{width:136px}
.companion.is-correct .companion-motion,.companion.is-wrong .companion-motion{animation:hop .45s cubic-bezier(.2,1.6,.4,1)}
@keyframes hop{40%{transform:translateY(-12px) rotate(-5deg)}}
.companion-bubble{position:relative;padding:10px 16px 12px;background:var(--sheet);border:1.6px solid var(--ink);border-radius:var(--hand-border);font:700 23px/1.2 var(--hand);letter-spacing:-.04em;animation:toast-in .3s cubic-bezier(.2,1.5,.4,1)}
.companion-bubble:before{content:'';position:absolute;left:-9px;top:50%;width:14px;height:14px;background:inherit;border-left:1.6px solid var(--ink);border-bottom:1.6px solid var(--ink);transform:translateY(-50%) rotate(45deg)}
.is-correct .companion-bubble{background:#e2f1e8;color:var(--good);border-color:var(--good)}.is-correct .companion-bubble:before{border-color:var(--good)}
.is-wrong .companion-bubble{background:#fbe3dd;color:var(--bad);border-color:var(--bad)}.is-wrong .companion-bubble:before{border-color:var(--bad)}
.choices{grid-area:choices;display:grid;gap:12px;margin:0}
.choice{display:flex;align-items:center;gap:14px;min-height:64px;padding:10px 18px;border-radius:16px;text-align:left;font:700 25px/1.15 var(--hand);transition:transform .15s}
.choice:not(:disabled):hover{transform:translateX(4px) rotate(-.4deg)}
.choice:not(:disabled):active{transform:translateY(1px)}
.choice kbd{flex-shrink:0;width:30px;height:30px;display:grid;place-items:center;border:1.6px solid var(--ink-faint);border-radius:50%;font:12px var(--mono);color:var(--ink-soft)}
.choice:disabled{opacity:1}
.choice-correct{--sk-fill:#dcefe3;--sk-stroke:var(--good);color:var(--good)}
.choice-correct kbd,.choice-wrong kbd{border-color:currentColor;color:inherit;font-weight:700}
.choice-wrong{--sk-fill:#fadcd5;--sk-stroke:var(--bad);color:var(--bad)}
.choice-muted{opacity:.4!important}
.hint-line{display:flex;justify-content:center;gap:22px;margin:16px 0 0;font:20px var(--hand);color:var(--ink-soft)}
.hint-line button{text-decoration:underline wavy var(--ink-faint) 1px;text-underline-offset:5px}
.pause-cover{position:absolute;inset:-6px;z-index:4;display:grid;place-content:center;justify-items:center;gap:18px;background:color-mix(in srgb,var(--paper) 93%,transparent);border-radius:22px}
.pause-motion{width:160px}
.prep{display:flex;flex-direction:column;align-items:center;gap:18px;padding:50px 20px 30px}
.prep-motion{width:min(180px,46vw)}
.prep-cards{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;max-width:300px}
.prep-cards i{width:20px;height:26px;border-radius:4px;border:1.6px solid var(--ink);background:var(--sheet);transition:background .2s,transform .25s cubic-bezier(.2,1.6,.4,1)}
.prep-cards i.ready{background:var(--hl);transform:translateY(-4px) rotate(-6deg)}
.prep p{margin:0;font:13px var(--mono);color:var(--ink-soft)}
.load-error{display:flex;flex-direction:column;align-items:center;gap:16px;padding:50px 20px;text-align:center}
.load-error p{margin:0;font:20px var(--hand)}
.loading-motion{width:140px}.loading-character{width:120px;height:120px}
.error-actions{display:flex;gap:10px}

/* Summary. */
.summary{position:relative;max-width:660px;margin:auto;padding:20px 0 30px;text-align:center}
.summary-hero{position:relative;width:min(290px,66vw);margin:6px auto 0}
.polaroid{margin:0;padding:12px 12px 42px;border-radius:10px;transform:rotate(-3deg)}
.polaroid img{display:block;width:100%;height:auto;aspect-ratio:1;object-fit:cover;border-radius:6px}
.summary-motion{position:absolute;right:-64px;bottom:-18px;width:132px}
.summary h1{font:700 clamp(46px,7vw,68px)/1.05 var(--hand);margin:18px 0 20px}
.summary-badge{position:absolute;top:10px;right:6%;width:92px;height:92px;object-fit:contain;transform:rotate(10deg)}
.burst{position:absolute;width:38px;height:38px;color:var(--ink);animation:pop .5s cubic-bezier(.2,1.6,.4,1) both,boil .5s .5s steps(1) infinite}
.burst.b1{left:18%;top:40px}.burst.b2{right:20%;top:120px;animation-delay:.12s,.6s}.burst.b3{left:24%;top:170px;color:var(--bad);width:28px;animation-delay:.24s,.7s}
@keyframes pop{from{opacity:0;scale:.2}}
.summary-detail{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:26px}
.word-chip{padding:5px 12px 6px;border:1.6px solid var(--ink);border-radius:var(--hand-border);background:var(--sheet);font:700 18px var(--hand)}
.word-chip[lang=ja]{font:15px var(--ja)}
.word-chip.wrong{color:var(--bad);border-color:var(--bad)}
.summary-actions{display:flex;justify-content:center;gap:12px}

/* Toast: a cat with a speech note. */
.toast{position:fixed;left:50%;bottom:24px;z-index:20;display:flex;align-items:center;gap:10px;width:max-content;max-width:calc(100vw - 32px);padding:8px 18px 8px 8px;background:var(--sheet);color:var(--ink);border:2px solid var(--ink);border-radius:var(--hand-border);box-shadow:3px 4px 0 var(--ink-faint);font:700 19px/1.25 var(--hand);transform:translateX(-50%);animation:toast-in .35s cubic-bezier(.2,1.5,.4,1)}
.toast-cat{width:42px;height:42px;flex-shrink:0}
@keyframes toast-in{from{opacity:0;transform:translate(-50%,20px) rotate(-3deg)}}

@media(max-width:900px){
  .hero{grid-template-columns:1fr;grid-template-areas:'title' 'demo' 'setup';padding:8px 0 36px}
  .hero-title{padding-top:8px;text-align:center}
  .showcase{padding:30px 0 0}
  .demo{min-height:0;padding-bottom:10px}
  .setup{margin-top:70px}
  .quiz-material{grid-template-columns:1fr;grid-template-areas:'case' 'choices';gap:16px}
  .companion{grid-area:case;align-self:end;justify-self:start;z-index:3;padding:0;margin:0 0 40px 2%}
  .companion-motion{width:110px}.companion-bubble{display:none}
  body[data-language=en] .companion{margin-bottom:120px}
  .choices{grid-template-columns:1fr 1fr}
  .quiz-line{display:none}
}
@media(max-width:760px){
  .planner{padding:28px 16px 20px}
  .planner-body{grid-template-columns:1fr;grid-template-areas:'hello' 'week' 'level' 'stats';gap:20px}
  .planner-stats{padding-top:16px;border-top:1.5px dashed var(--ink-faint)}
  .planner-cat{width:66px;height:66px}
  .day-stamp{width:36px;height:36px;padding:7px}
  .planner-stats dd{font-size:30px}
}
@media(max-width:650px){
  .shell{padding:0 16px}
  .header{height:64px}
  .brand{font-size:22px}.brand b{display:none}.brand-cat{width:38px;height:38px}
  .nav{gap:14px}.nav-link{font-size:19px}
  .hero h1{font-size:54px}
  .hero-sub{font-size:19px;margin-top:10px}
  .demo-stage{width:min(220px,60%)}
  .demo-timer{width:78px;height:78px;top:-22px;right:-40px}.demo-digit{font-size:42px}
  .demo-cat{width:86px;left:-44px;bottom:-16px}
  .demo-chips{gap:8px;margin-top:26px}.demo-chip{min-height:42px;font-size:17px}
  .doodle{width:26px}.glyph-float{font-size:30px}
  .hero-line{width:84px;height:84px;top:auto;bottom:-10px;right:0}
  .story-reel{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:16px;padding:8px 8px 16px}.story-frame{flex:0 0 72%;scroll-snap-align:center}
  .summary-motion{width:100px;right:-34px}
  .setup{padding:20px 14px 16px;margin-top:64px}
  .setup-mascot{width:84px;height:84px;top:-72px;right:6px}
  .language-switch button{font-size:17px;padding:6px 10px}
  .app-banner strong,.stores span{display:none}
  .topbar{padding-top:10px}.app-banner{gap:6px;padding:4px 5px 4px 6px}.app-banner>img{width:30px;height:30px}
  .stores a{width:32px;height:32px;padding:0;justify-content:center}.stores svg{width:15px;height:15px}
  .level-options{gap:6px}.level-choice{padding:6px 0 8px}.level-art{width:42px;height:42px}.level-choice strong{font-size:18px}
  .level-choice .ico-lock{width:14px;height:14px;top:4px;right:3px}
  .page h1{font-size:52px}.page-cat{width:80px;height:80px}.page-motion{width:90px}
  .review-summary{padding:12px 14px;gap:12px}.summary-cat{display:none}.review-count strong{font-size:44px}
  .help-list li{padding:12px 14px;gap:12px}.help-list strong{font-size:20px}
  .quiz-material{grid-template-columns:1fr;grid-template-areas:'case' 'choices';gap:14px}
  .quiz-line{display:none}
  .word-case{padding-top:22px;gap:12px}
  .study-image{height:min(40vh,360px)}
  body[data-language=en] .study-image{height:min(30vh,270px)}
  .case-timer{top:-24px;right:-22px}
  .clock{width:86px;height:86px}.clock-value{font-size:50px}
  .result-dial{width:78px;height:78px}.result-dial .ico{width:54px;height:54px}
  .companion{grid-area:case;align-self:end;justify-self:start;z-index:3;padding:0;margin:0 0 30px -4px}
  .companion-motion{width:76px}.companion-bubble{display:none}
  body[data-language=en] .companion{margin-bottom:100px}
  .choices{grid-template-columns:1fr 1fr;gap:8px}.choice{min-height:54px;padding:8px 10px;font-size:20px;gap:8px}.choice kbd{width:24px;height:24px}
  .hint-line{margin-top:10px}
  .answer-stamp strong{font-size:28px}.study-meaning{font-size:21px}
  .study-word{font-size:26px}
}
@media(max-width:370px){.brand span{display:none}.day-stamp{width:32px;height:32px;padding:6px}.planner-range{display:none}}
@media(max-height:720px) and (min-width:651px){.study-image{max-height:42vh}.clock{width:120px;height:120px}.clock-value{font-size:64px}}
@media(prefers-reduced-motion:reduce){
  *,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .hl{background-size:100% 46%}
}