/* Generated by scripts/design-tokens.mjs from design/tokens.json; edit there, then regenerate. */
:root{--identity-text:#1F1F1F;--identity-border:#747775;--identity-surface:#FFFFFF;--identity-strong-surface:#000000;--identity-strong-text:#FFFFFF;--canvas:#F6F5F1;--course-surface:#DDE1E7;--course-card:#F6F5F1;--course-forecast:#758DAA;--surface:#FDFCF9;--surface-subtle:#DCDBDA;--text-primary:#1B1F2E;--text-body:#474C5C;--text-secondary:#676C7A;--text-inverse:#FDFCF9;--action-primary:#1B1F2E;--action-primary-text:#FDFCF9;--action-secondary:#1B1F2E;--action-neutral:#1B1F2E;--progress-fill:#1B1F2E;--progress-forecast:#B4B5B6;--memory-fill:#4B8AC9;--memory-soft:#B3CEEB;--exam:#E6803A;--exam-text:#A9521A;--progress-track:#EEEDE7;--selection-fill:#1B1F2E;--selection-text:#FDFCF9;--selection-surface:#DCDBDA;--switch-on:#1B1F2E;--border-subtle:#DDDBD3;--badge-tint:rgb(27 31 46 / 0.06);--border-correct:#1E7A46;--correct:#1E7A46;--error:#B3261E;--error-surface:#F7E7E4;--part-indigo:#4A6A93;--part-pine:#6B8B5A;--part-ochre:#B98A4E;--part-bark:#5C4632;--part-vermilion:#C0623F;--part-slate:#7D848B;--part-plum:#8C5A7C;--part-skin:#D9A07E;--picture-tint:#FFFFFF;--segment-track:rgb(27 31 46 / 0.08);--segment-thumb:#FFFFFF;--spacing-inline:4px;--spacing-related:8px;--spacing-control-inset:12px;--spacing-group:16px;--spacing-section:24px;--spacing-screen-inset:20px;--radius-control:14px;--radius-card:24px;--opacity-pressed:0.9;--opacity-disabled:0.4}
/* End of generated tokens. */
@font-face{font-family:'Pretendard';font-weight:400;font-display:swap;src:url(/home/fonts/pretendard-400.woff2) format('woff2')}
@font-face{font-family:'Pretendard';font-weight:600;font-display:swap;src:url(/home/fonts/pretendard-600.woff2) format('woff2')}
@font-face{font-family:'Pretendard';font-weight:700;font-display:swap;src:url(/home/fonts/pretendard-700.woff2) format('woff2')}
@font-face{font-family:'Pretendard';font-weight:800;font-display:swap;src:url(/home/fonts/pretendard-800.woff2) format('woff2')}
@font-face{font-family:'Noto Sans JP';font-weight:100 900;font-display:swap;src:url(/home/fonts/noto-sans-jp.woff2) format('woff2')}
:root{--sans:'Pretendard',system-ui,-apple-system,'Apple SD Gothic Neo','Malgun Gothic',sans-serif;--out:cubic-bezier(.2,.7,.2,1);color-scheme:light}
*{box-sizing:border-box}[hidden]{display:none!important}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--surface);color:var(--text-primary);font:400 17px/1.6 var(--sans);word-break:keep-all;-webkit-text-size-adjust:100%;overflow-x:clip}
img{display:block;max-width:100%}
.wrap{width:100%;max-width:1280px;margin-inline:auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
:focus-visible{outline:3px solid var(--memory-fill);outline-offset:3px}
.nb{white-space:nowrap}
h1,h2,h3{margin:0;font-weight:800;letter-spacing:-.04em;text-wrap:balance}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
/* nav */
.nav{position:fixed;z-index:10;top:max(10px,env(safe-area-inset-top,0px));left:50%;width:min(calc(100% - 20px),1240px);transform:translateX(-50%);display:flex;align-items:center;justify-content:space-between;gap:24px;height:56px;padding:0 10px 0 16px;border-radius:999px;color:var(--surface);border:1px solid transparent;transition:width .25s var(--out),background-color .2s var(--out),border-color .2s var(--out)}
.nav.float{width:min(calc(100% - 20px),760px);background:color-mix(in srgb,var(--text-primary) 86%,transparent);-webkit-backdrop-filter:saturate(160%) blur(18px);backdrop-filter:saturate(160%) blur(18px);border-color:color-mix(in srgb,var(--picture-tint) 10%,transparent)}
.brand{display:block;color:inherit;line-height:0}.brand svg{height:30px;width:auto;fill:currentColor}
.links{display:none;gap:26px;font-size:15px;font-weight:600}.links a{color:inherit;text-decoration:none;opacity:.78;transition:opacity .15s var(--out)}.links a:hover{opacity:1}
@media(min-width:900px){.links{display:flex}}
.pill{display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:999px;background:var(--surface);color:var(--text-primary);font-size:15px;font-weight:600;text-decoration:none;white-space:nowrap}
/* getting the app */
.badges{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.badge{display:block;line-height:0;transition:opacity .15s var(--out)}.badge:hover{opacity:.85}.badge img{height:52px;width:auto}
html[data-os=ios] .badge.play,html[data-os=android] .badge.apple{display:none}
html[data-os=ios] .badge img,html[data-os=android] .badge img{height:58px}html[data-os=android] .notify{width:184px;height:58px}
.notify{display:inline-flex;align-items:center;justify-content:center;gap:8px;box-sizing:border-box;width:165px;height:52px;padding:0;font-size:15px;border-radius:14px;background:var(--surface);color:var(--text-primary);font-weight:600;text-decoration:none}
.notify svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
html[data-phase=pre] .after-launch,html:not([data-phase=pre]) .before-launch{display:none!important}
/* Badges keep Apple's clear space (a quarter of the badge height) and the notice matches the badge height. */
/* Until Google Play opens: the App Store badge shows, Android gets the launch notice. */
html[data-os=ios] .notify,html[data-phase=pre]:not([data-os=android]) .pill.before-launch,html[data-phase=pre][data-os=android] [data-pill]{display:none!important}
.getrow{display:flex;align-items:center;gap:16px}
.fine{margin:14px 0 0;font-size:14px;line-height:1.5;color:var(--progress-forecast)}
.qr{display:none;width:114px;height:114px;background:var(--picture-tint);border-radius:14px;padding:9px;flex:none}
@media(hover:hover) and (pointer:fine) and (min-width:900px){.qr{display:block}}
/* hero */
.hero{position:relative;background:var(--text-primary);color:var(--surface);overflow:clip}
.hero .wrap{display:grid;gap:36px;padding-top:92px}
.dday{display:inline-flex;align-items:center;gap:8px;margin:0 0 16px;font-size:15px;font-weight:600}.dday i{width:8px;height:8px;border-radius:50%;background:var(--exam);box-shadow:0 0 0 4px color-mix(in srgb,var(--exam) 25%,transparent)}.dday b{color:var(--exam);font-weight:800;font-variant-numeric:tabular-nums}
h1{line-height:1.14;font-size:clamp(40px,11.4vw,84px)}h1 em{font-style:normal;color:var(--exam)}
.lead{margin:16px 0 26px;font-size:clamp(17px,4.5vw,22px);line-height:1.45;color:var(--progress-forecast);text-wrap:balance}
.trio{position:relative;height:clamp(420px,118vw,560px);margin-inline:-20px}
.scr{position:absolute;left:50%;top:0;width:clamp(218px,60vw,270px);border-radius:32px;overflow:hidden;background:var(--canvas);box-shadow:0 30px 70px -20px color-mix(in srgb,var(--identity-strong-surface) 60%,transparent);transform:translateX(-50%);animation:rise .8s var(--out) both}
.scr img{width:100%;height:auto}
.scr.l,.scr.r{width:clamp(180px,50vw,226px);top:56px}.scr.l{transform:translateX(-112%);animation-name:riseL;animation-delay:.08s}.scr.r{transform:translateX(12%);animation-name:riseR;animation-delay:.08s}.scr.c{z-index:1}
@keyframes rise{from{opacity:0;transform:translate(-50%,40px)}}@keyframes riseL{from{opacity:0;transform:translate(-100%,60px)}}@keyframes riseR{from{opacity:0;transform:translate(0,60px)}}
@media(min-width:900px){h1{font-size:clamp(58px,5.5vw,84px)}.hero .wrap{grid-template-columns:minmax(0,1fr) minmax(0,540px);gap:40px;align-items:center;padding-top:104px}.hero .say{padding-bottom:64px}.trio{height:620px;margin:0}.scr{width:330px}.scr.l,.scr.r{width:268px;top:76px}.scr.l{transform:translateX(-114%)}.scr.r{transform:translateX(14%)}}
/* section names */
.h2{font-size:clamp(32px,8.4vw,60px);line-height:1.16;letter-spacing:-.04em}
/* the course in numbers */
.size{padding-block:72px 16px}
.steps{list-style:none;margin:36px 0 0;padding:0;display:grid;gap:0}
.step{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:baseline;gap:10px 12px;padding:16px 0;border-top:1px solid var(--border-subtle)}
.step .g{font-size:16px;font-weight:800;letter-spacing:-.02em}
.step .b{grid-column:1/-1;grid-row:2;height:10px;border-radius:5px;background:var(--canvas);overflow:hidden}.step .b i{display:block;height:100%;width:calc(var(--v)*100%);min-width:6px;border-radius:5px;background:var(--text-primary)}
.step .n{display:flex;align-items:baseline;justify-content:flex-end;gap:12px;font-variant-numeric:tabular-nums;line-height:1.25}.step .n b{font-size:20px;font-weight:800;letter-spacing:-.02em}.step .n small{width:76px;text-align:right;font-size:13px;color:var(--text-secondary)}.step .n u{text-decoration:none;font-size:13px;font-weight:600;letter-spacing:0;margin-left:3px;color:var(--text-secondary)}

.step.top .b i{background:var(--memory-fill)}
@media(min-width:900px){.size{padding-block:128px 24px}.sizehead{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:48px}
.steps{margin-top:56px;grid-template-columns:repeat(6,minmax(0,1fr));gap:14px;align-items:end}
.step{display:flex;flex-direction:column;align-items:stretch;gap:0;padding:0;border:0;height:440px;justify-content:flex-end}
.step .n{display:block;order:0;text-align:left;margin-bottom:12px}.step .n b{display:block;font-size:clamp(26px,2.6vw,36px)}.step .n small{width:auto;text-align:left;font-size:14px;display:block;margin-top:2px}
.step .b{order:1;height:calc(var(--v)*230px + 12px);flex:none;border-radius:14px;background:none}.step .b i{width:100%;height:100%;border-radius:14px}
.step .g{order:2;margin-top:14px;font-size:20px}}
/* videos */
.videos{padding-block:56px 8px}.videos .wrap{display:grid;gap:28px}
.shelf{display:flex;gap:12px;overflow-x:auto;scroll-snap-type:x mandatory;margin-inline:-20px;padding:4px 20px 12px;scrollbar-width:none}.shelf::-webkit-scrollbar{display:none}
.vid{flex:none;width:min(72vw,300px);scroll-snap-align:center;display:block;text-align:left}
.vid .frame{position:relative;display:block;aspect-ratio:9/16;border-radius:24px;overflow:hidden;box-shadow:0 22px 50px -24px color-mix(in srgb,var(--text-primary) 55%,transparent)}
.vid .frame img{width:100%;height:100%;object-fit:cover}
.vid .frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.vid .go{position:absolute;left:50%;bottom:9%;width:68px;height:68px;margin-left:-34px;border-radius:50%;background:var(--surface);display:grid;place-items:center;box-shadow:0 12px 30px -8px color-mix(in srgb,var(--identity-strong-surface) 55%,transparent)}.vid .go svg{width:28px;height:28px;fill:var(--text-primary);margin-left:3px}
.vid small{display:block;margin-top:10px;font-size:15px;color:var(--text-secondary);font-variant-numeric:tabular-nums}
@media(min-width:900px){.videos{padding-block:128px 0}.shelf{margin:0;padding:4px;overflow:visible}.vid{width:290px}}
@media(min-width:1200px){.videos .wrap{grid-template-columns:minmax(0,1fr) auto;gap:64px;align-items:center}}
/* the road */
.road{position:relative;padding-block:72px 0}
.rail{display:none}
.chap{padding-block:0 72px;position:relative}
.dot{display:none}
@media(min-width:1000px){.road{padding-block:136px 0}.road .wrap{position:relative;padding-left:84px}
.rail{display:block;position:absolute;top:30px;bottom:64px;left:27px;width:3px;border-radius:2px;background:var(--border-subtle)}.rail b{display:block;height:calc(var(--p,0)*100%);border-radius:2px;background:var(--text-primary)}.rail em{position:absolute;left:50%;bottom:-8px;width:20px;height:20px;margin-left:-10px;border-radius:50%;background:var(--surface);border:5px solid var(--exam)}
.dot{display:block;position:absolute;left:-64px;top:20px;width:16px;height:16px;border-radius:50%;background:var(--text-primary);box-shadow:0 0 0 6px var(--surface)}.chap{padding-block:0 128px}}
/* a row: a short name beside a deck of real samples */
.row{display:grid;gap:18px;margin-top:40px}
.row h3{font-size:clamp(25px,6.4vw,32px);line-height:1.22;letter-spacing:-.035em}
.feat{list-style:none;margin:6px 0 0;padding:0;font-size:16px;color:var(--text-body)}.feat li{text-wrap:pretty;padding:10px 0;border-top:1px solid var(--border-subtle);line-height:1.45}.feat li:first-child{border-top:0}
.feat.types li{display:grid;grid-template-columns:74px minmax(0,1fr);gap:8px}.feat.types b{font-weight:700;color:var(--text-primary)}.types+.feat{margin-top:0}.types+.feat li:first-child{border-top:1px solid var(--border-subtle)}
/* deck: swipe it */
.deck{position:relative;border-radius:28px;overflow:hidden;background:var(--canvas);margin-inline:-10px}
.deck.blue{background:var(--memory-fill)}.deck.pine{background:var(--part-pine)}.deck.orange{background:var(--exam)}.deck.dark{background:var(--text-primary)}.deck.tint{background:color-mix(in srgb,var(--memory-soft) 30%,var(--surface))}
.track{display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x proximity;scroll-padding-inline:24px;padding:28px 24px;scrollbar-width:none;cursor:grab;-webkit-overflow-scrolling:touch}.track::-webkit-scrollbar{display:none}.track.drag{cursor:grabbing;scroll-snap-type:none;scroll-behavior:auto;user-select:none}.track::after{content:'';flex:0 0 10px}.track.fits::after{display:none}
.track>:first-child{margin-left:auto}.track>:last-child{margin-right:auto}
.card{flex:none;margin:0;width:min(68vw,290px);scroll-snap-align:start}
.card .sc{border-radius:26px;overflow:hidden;box-shadow:0 20px 50px -22px color-mix(in srgb,var(--identity-strong-surface) 50%,transparent);background:var(--canvas)}.card img{width:100%;height:auto;-webkit-user-drag:none;user-select:none;pointer-events:none}
.card figcaption{margin-top:12px;font-size:15px;font-weight:600;letter-spacing:-.01em}.deck.blue figcaption,.deck.pine figcaption,.deck.orange figcaption,.deck.dark figcaption{color:var(--surface)}
.card.pad{width:min(72vw,500px)}
.arrows{display:none}
@media(hover:hover) and (pointer:fine){.arrows{display:flex;position:absolute;right:20px;bottom:20px;gap:8px;z-index:2}.arrows button{width:44px;height:44px;border-radius:50%;background:var(--surface);color:var(--text-primary);display:grid;place-items:center;box-shadow:0 8px 22px -8px color-mix(in srgb,var(--identity-strong-surface) 50%,transparent);transition:opacity .15s var(--out)}.arrows button:disabled{opacity:.35;cursor:default}.arrows svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}}
@media(min-width:900px){.row{grid-template-columns:minmax(0,3.4fr) minmax(0,8.6fr);gap:48px;align-items:start;margin-top:72px}.row>div:first-child{position:sticky;top:96px}.deck{margin:0;border-radius:32px}.track{padding:36px;scroll-padding-inline:36px;gap:18px}.card{width:290px}.flowdeck{margin-top:48px}}
.flowdeck{margin-top:28px}
.chain .card{position:relative}.chain .card figcaption{margin:0 0 16px;display:grid;gap:2px;font-size:15px;line-height:1.35;color:var(--text-body)}
.chain figcaption b{font:800 clamp(34px,9vw,44px)/1.15 'Noto Sans JP',var(--sans);color:var(--text-primary)}.chain figcaption em{font-style:normal;color:var(--exam)}
.then{display:none}
@media(min-width:1200px){.chain .track{gap:56px}.then{display:block;position:absolute;left:100%;width:56px;top:14px;text-align:center;font-size:30px;font-weight:600;color:var(--text-secondary)}}
/* voices */
.voice{position:relative;flex:none;width:min(68vw,290px);aspect-ratio:1206/2622;scroll-snap-align:start;border-radius:26px;overflow:hidden;background:var(--text-primary);color:var(--surface)}
.voice img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;-webkit-user-drag:none;user-select:none;pointer-events:none}.voice .who{position:absolute;left:0;right:0;bottom:0;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:2px 12px;align-items:center;padding:72px 16px 18px;background:linear-gradient(transparent,color-mix(in srgb,var(--text-primary) 94%,transparent) 58%)}.voice b{font-size:26px;font-weight:700;letter-spacing:.01em}.voice small{font-size:14px;line-height:1.4;color:var(--border-subtle);grid-column:1;text-wrap:balance}
.say-btn{grid-column:2;grid-row:1/span 2;width:48px;height:48px;border-radius:50%;background:var(--surface);display:grid;place-items:center}.say-btn svg{width:20px;height:20px;fill:var(--text-primary);margin-left:2px}.say-btn.on{background:var(--exam)}
/* the sheet: the app's purchase sheet, as a page's last word */
.sheet{background:var(--course-surface);border-radius:40px 40px 0 0;padding-block:64px 56px;margin-top:8px}
.stats{list-style:none;margin:32px 0 0;padding:0;display:grid;gap:10px}
.stats li{background:var(--canvas);border-radius:24px;padding:24px;display:grid;grid-template-columns:auto 1fr;align-items:baseline;gap:4px 10px}
.stats b{font-size:clamp(46px,12.6vw,72px);font-weight:800;letter-spacing:-.045em;line-height:1;font-variant-numeric:tabular-nums;color:var(--part-indigo)}
.stats .u{font-size:clamp(20px,5vw,24px);font-weight:700;letter-spacing:-.02em}
.stats small{grid-column:1/-1;margin-top:8px;font-size:15px;line-height:1.45;color:var(--text-body);text-wrap:pretty}
.keep{margin-top:10px;background:var(--canvas);border-radius:24px;padding:24px;display:grid;gap:18px}
.keep h3{font-size:clamp(22px,5.6vw,28px);line-height:1.25;letter-spacing:-.03em}.keep p{margin:6px 0 0;font-size:15px;line-height:1.5;color:var(--text-body);text-wrap:pretty}
.phones{display:flex;align-items:center;gap:14px;font-size:14px;font-weight:600;color:var(--text-body)}.phones span{display:grid;justify-items:center;gap:6px}.phones span svg{height:45px;width:auto;fill:none;stroke:var(--text-primary);stroke-width:1.8;stroke-linecap:round}
.swap{flex:none;width:36px;height:22px;fill:none;stroke:var(--part-indigo);stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;margin-bottom:20px}
.buybar{margin-top:10px;background:var(--text-primary);color:var(--surface);border-radius:24px;padding:28px 24px;display:grid;gap:22px}
.cname{margin:0 0 12px;display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;font-size:clamp(17px,4.4vw,20px);font-weight:700;letter-spacing:-.02em}.free{padding:3px 11px;border:1.5px solid color-mix(in srgb,var(--surface) 30%,transparent);border-radius:999px;font-size:14px;font-weight:600;letter-spacing:-.01em}.price{margin:0;font-size:clamp(50px,13.4vw,72px);font-weight:800;letter-spacing:-.045em;line-height:1;font-variant-numeric:tabular-nums}.price small{font-size:.36em;font-weight:600;letter-spacing:-.01em;margin-left:5px}.once{margin:8px 0 0;font-size:17px;font-weight:600;color:var(--progress-forecast)}
.maker{margin:22px 4px 0;font-size:15px;line-height:1.5;color:var(--text-body)}.move{display:block;width:fit-content;margin-top:6px;font-weight:600;color:var(--text-primary);text-underline-offset:3px}
@media(min-width:900px){.sheet{padding-block:96px 72px;margin-top:40px;border-radius:56px 56px 0 0}.stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:44px}.stats li{padding:32px;align-content:start}
.keep{margin-top:16px;grid-template-columns:auto minmax(0,1fr);gap:40px;align-items:center;padding:32px}.buybar{margin-top:16px;grid-template-columns:auto minmax(0,1fr);gap:48px;align-items:center;padding:36px 40px}.buybar .get{justify-self:end}}
footer{background:var(--text-primary);color:var(--progress-forecast);padding-block:40px 80px;font-size:14px}.foot-mark{margin-bottom:22px;color:var(--surface)}.foot-mark svg{display:block;height:34px;width:auto;fill:currentColor}footer nav{display:flex;flex-wrap:wrap;gap:8px 24px;margin-bottom:14px}footer a{color:var(--surface);text-underline-offset:3px}footer p{margin:8px 0 0;line-height:1.6}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.scr{animation:none}.nav{transition:none}}