:root{--ink:#24213e;--purple:#6548d9;--pale:#efebfc;--paper:#faf9f6;--muted:#6d6a7a;--line:#e4e1ea}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans JP","Yu Gothic",Meiryo,sans-serif;font-size:15px;line-height:1.8}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #d98b21;outline-offset:4px}button{color:inherit}.skip{position:absolute;left:10px;top:-80px;background:white;padding:10px;z-index:20}.skip:focus{top:10px}.header{max-width:1240px;margin:auto;display:flex;justify-content:space-between;align-items:center;padding:25px 40px;gap:24px}.brand{display:flex;gap:12px;align-items:center;font-size:17px;font-weight:800;line-height:1.5}.brand small{display:block;font-size:10px;font-weight:500;color:var(--muted);letter-spacing:.06em}.brand-icon{background:var(--purple);color:white;display:inline-flex;width:49px;height:49px;align-items:center;justify-content:center;border-radius:14px;font-size:20px;position:relative}.brand-icon span{position:absolute;top:-12px;right:-8px;font-size:24px;color:#edbd56}.header nav{display:flex;align-items:center;gap:26px;font-size:12px;font-weight:700}.home-link{border:1px solid var(--line);border-radius:99px;padding:9px 17px}.demo-notice{background:#fff0ce;text-align:center;font-size:12px;padding:9px 16px;color:#785315}.hero{max-width:1240px;margin:auto;display:grid;grid-template-columns:1fr 1fr;gap:48px;padding:68px 40px 90px;align-items:center}.eyebrow{font-size:10px;letter-spacing:.16em;color:var(--purple);font-weight:800;margin:0 0 16px;display:flex;align-items:center;gap:8px}.eyebrow span{width:7px;height:7px;background:var(--purple);border-radius:100%}h1{font-size:clamp(34px,4.4vw,57px);letter-spacing:-.055em;line-height:1.35;margin:0 0 23px;font-weight:900}.dot{color:var(--purple)}.lead{font-size:17px;font-weight:700;line-height:1.9}.hero-sub{font-size:13px;color:var(--muted);margin:20px 0 28px}.primary{display:inline-flex;align-items:center;justify-content:center;gap:28px;background:var(--purple);color:white;font-size:13px;font-weight:700;padding:14px 24px;border:none;border-radius:10px;box-shadow:0 5px 12px #6548d91c}.primary:hover{background:#5034bd}.hero-note{font-size:11px;margin-top:22px;color:var(--muted)}.hero-note span{color:var(--purple);margin-right:7px}.hero-art{position:relative;padding:30px 12px}.hero-art:before{content:"";position:absolute;inset:-15px -15px;background:radial-gradient(circle at 25% 40%,#e6ddff,transparent 65%),radial-gradient(circle at 90% 70%,#fff0ca,transparent 60%);border-radius:50%;z-index:-1}.showcase{background:white;padding:10px;border-radius:18px;box-shadow:0 22px 60px #32265921;transform:rotate(-3deg);border:1px solid #e9e3f4}.window-bar{display:flex;justify-content:space-between;padding:4px 9px 12px;font-size:9px;letter-spacing:.1em;color:#a59ebc}.window-bar span:first-child{color:#c8bbeb}.showcase svg{width:100%;display:block;border-radius:10px}.showcase-caption{padding:15px 10px 7px;display:flex;align-items:center;justify-content:space-between}.showcase-caption small{display:block;font-size:10px;color:var(--muted)}.showcase-caption strong{font-size:16px}.play-disc{width:39px;height:39px;background:var(--pale);color:var(--purple);display:grid;place-items:center;border-radius:100%;font-size:13px}.float-label{position:absolute;right:8px;top:-2px;font-weight:900;color:var(--purple);font-size:13px;letter-spacing:.12em;transform:rotate(8deg)}.sticker{position:absolute;right:-12px;bottom:-3px;background:#f6cc66;border:3px solid white;box-shadow:0 5px 15px #33224415;border-radius:50%;padding:22px 17px;line-height:1.5;font-weight:800;font-size:13px;transform:rotate(9deg)}.orbit{position:absolute;color:var(--purple);font-size:40px}.o1{left:-30px;bottom:17px}.o2{left:4px;top:-24px;color:#dca234}.section{max-width:1160px;margin:auto}.gallery{padding:38px 0 72px;border-top:1px solid var(--line)}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:30px}.section-heading .eyebrow{margin-bottom:7px}h2{margin:0;font-size:29px;letter-spacing:-.025em;line-height:1.5}.count{font-size:13px;vertical-align:middle;border:1px solid var(--line);border-radius:99px;padding:4px 10px;letter-spacing:0;margin-left:14px;color:var(--muted);font-weight:500}.section-heading>p{font-size:12px;margin:0}.section-heading>p span{color:var(--muted)}.toolbar{display:flex;justify-content:space-between;align-items:center;gap:20px}.chips{display:flex;gap:8px;flex-wrap:wrap}.chip{border:1px solid var(--line);background:white;border-radius:99px;padding:8px 17px;font-size:12px;font-weight:700}.chip.active{background:var(--ink);border-color:var(--ink);color:white}.search{display:flex;gap:8px;border:1px solid var(--line);border-radius:10px;align-items:center;padding:6px 12px;background:white}.search span{font-size:25px;line-height:1;color:var(--muted)}.search input{width:185px;border:none;outline-offset:5px;font-size:12px;background:transparent;min-width:0;padding:6px 0}.sub-toolbar{display:flex;justify-content:space-between;align-items:center;margin:20px 0;font-size:11px;color:var(--muted)}.sub-toolbar p{margin:0}.sub-toolbar>div{display:flex;gap:19px}.sub-toolbar select{border:none;background:transparent;font-size:11px;color:var(--ink);padding:5px;max-width:170px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px 22px}.card{border:1px solid var(--line);border-radius:15px;background:white;overflow:hidden;transition:transform .18s,box-shadow .18s;display:flex;flex-direction:column}.card:hover{transform:translateY(-4px);box-shadow:0 13px 30px #32265912}.thumb{width:100%;aspect-ratio:16/10;border:none;padding:0;display:block;position:relative;overflow:hidden;background:var(--pale)}.thumb svg,.thumb img{width:100%;height:100%;object-fit:cover;display:block}.sample-stamp{position:absolute;top:11px;right:11px;background:#ffffffdd;border-radius:5px;font-size:9px;font-weight:700;padding:2px 7px}.card-body{padding:19px 20px 17px;flex:1;display:flex;flex-direction:column}.card-tags{display:flex;gap:6px;font-size:9px;margin-bottom:10px}.tag{background:var(--pale);color:#57448b;padding:2px 7px;border-radius:4px}.tag.ai{background:#f0f3ee;color:#506345}.card h3{margin:0;font-size:17px;line-height:1.6}.description{color:var(--muted);font-size:12px;margin:8px 0 16px;flex:1}.meta{display:flex;justify-content:space-between;align-items:center;font-size:11px;color:var(--muted);border-top:1px solid #f0eef3;padding-top:12px}.meta strong{font-weight:700;color:var(--ink)}.card-action{display:flex;justify-content:space-between;gap:8px;align-items:center;margin-top:15px}.detail-btn{border:none;background:transparent;color:var(--muted);font-size:11px;padding:4px 0;text-decoration:underline;text-underline-offset:4px}.play-link{background:var(--pale);color:var(--purple);border:none;border-radius:7px;font-size:11px;font-weight:700;padding:8px 12px}.play-link:hover{background:#e3dafb}.empty{text-align:center;padding:60px 20px}.learning{background:#efedf7;border-radius:20px;padding:45px 48px;display:grid;grid-template-columns:1fr 1.3fr;gap:50px}.learning h2{font-size:30px;line-height:1.7}.learning h2 span{color:var(--purple)}.learning p{font-size:12px;color:var(--muted)}.steps{display:flex;flex-direction:column;justify-content:center}.steps article{display:flex;gap:22px;padding:22px 0;border-bottom:1px solid #dbd5ea}.steps article:last-child{border-bottom:0}.steps article>span{font-size:25px;color:#b7a8dd;font-weight:800}.steps h3{margin:0;font-size:16px}.steps p{margin:5px 0 0}.cta{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:66px 0}.cta-star{font-size:64px;color:#d4c6f9;line-height:1}.cta>div{flex:1}.cta h2{font-size:23px}.cta p{font-size:12px;color:var(--muted);margin:4px 0}.cta>div>p:first-child{font-size:13px;color:var(--purple);font-weight:700}footer{border-top:1px solid var(--line);max-width:1160px;margin:auto;padding:30px 0;display:flex;justify-content:space-between;align-items:center;gap:20px}footer p,footer small{font-size:10px;color:var(--muted)}.footer-brand{font-size:26px;color:var(--purple)}.footer-brand span{font-size:12px;color:var(--ink)}dialog{border:none;border-radius:18px;padding:0;width:min(650px,calc(100% - 30px));max-height:90dvh;color:var(--ink);box-shadow:0 20px 80px #0003}dialog::backdrop{background:#1c1635a8}.close{position:absolute;right:12px;top:12px;border:none;border-radius:99px;background:white;width:38px;height:38px;font-size:25px;z-index:1}.detail-art svg,.detail-art img{display:block;width:100%;aspect-ratio:16/10;object-fit:cover}.detail-inner{padding:25px 30px 30px}.detail-inner h2{font-size:25px}.detail-inner>p{font-size:13px}.detail-inner dl{margin:20px 0}.detail-inner dt{font-size:12px;font-weight:800;color:var(--purple);margin-top:18px}.detail-inner dd{margin:4px 0;font-size:13px}.detail-inner .sample-note{padding:12px;background:#fff0ce;font-size:12px;border-radius:8px}.detail-inner .primary{margin-top:12px}.external-note{font-size:11px;color:var(--muted)}[hidden]{display:none!important}@media(min-width:1600px){.hero{padding-top:85px;padding-bottom:100px}}@media(max-width:1220px){.section,footer{margin-left:40px;margin-right:40px}}@media(max-width:900px){.hero{gap:24px;padding-top:45px}.hero h1{font-size:40px}.hero .lead{font-size:14px}.hero-sub{font-size:12px}.hero-art{padding:20px 0}.sticker{font-size:11px;padding:19px 14px;right:-15px}.showcase-caption strong{font-size:13px}.grid{grid-template-columns:repeat(2,1fr)}.toolbar{align-items:flex-start;flex-direction:column}.search{width:100%}.search input{width:100%}.learning{gap:25px;padding:32px}.learning h2{font-size:26px}.cta-star{display:none}footer{flex-wrap:wrap}.header nav{gap:15px}.header nav>a:not(.home-link){display:none}}@media(max-width:600px){.header{padding:20px}.header .brand{font-size:14px}.header .brand small{font-size:9px}.brand-icon{width:40px;height:40px;font-size:17px}.home-link{font-size:10px;padding:8px 10px}.hero{grid-template-columns:1fr;padding:38px 24px 65px;gap:35px}.hero h1{font-size:43px}.hero-art{width:92%;margin:auto}.float-label{right:0}.hero .lead{font-size:15px}.hero-sub{font-size:12px}.hero-note{font-size:10px}.section,footer{margin-left:20px;margin-right:20px}.section-heading{display:block}.section-heading>p{margin-top:13px}.gallery{padding-top:28px}h2{font-size:25px}.chips{gap:6px}.chip{padding:7px 12px;font-size:11px}.sub-toolbar{align-items:flex-start;gap:10px;flex-direction:column}.sub-toolbar>div{justify-content:space-between;width:100%;gap:4px}.grid{grid-template-columns:1fr;gap:20px}.card-body{padding:18px 20px}.learning{grid-template-columns:1fr;padding:28px;gap:10px}.learning h2{font-size:28px}.steps article{gap:15px}.steps h3{font-size:14px}.cta{align-items:flex-start;flex-direction:column;padding:45px 0}.cta h2{font-size:22px}.cta .primary{width:100%}footer{align-items:flex-start;flex-direction:column;gap:8px}footer p{margin:0}.detail-inner{padding:22px}.demo-notice{font-size:10px}.eyebrow{font-size:9px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.card{transition:none}.card:hover{transform:none}}

.teacher{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;border-top:1px solid var(--line);padding:40px 0 55px}.teacher h2{font-size:25px}.teacher>div>p:not(.eyebrow){font-size:12px;color:var(--muted)}.teacher-card{max-width:440px;justify-self:end}.teacher-card .card{display:grid;grid-template-columns:42% 58%;border-radius:12px}.teacher-card .thumb{height:100%;aspect-ratio:auto}.teacher-card .card-body{padding:15px}.teacher-card h3{font-size:15px}.teacher-card .description{font-size:11px;margin-bottom:8px}.teacher-card .card-tags{flex-wrap:wrap}.related{border-top:1px solid var(--line);padding:15px 0;margin:20px 0;font-size:12px}.related button{display:block}.hero-detail{border:none;cursor:pointer}.showcase img{width:100%;aspect-ratio:16/10;object-fit:cover;display:block;border-radius:10px}.placeholder-art{display:grid;place-content:center;text-align:center;height:100%;min-height:200px;background:linear-gradient(135deg,#342061,#8062ce);color:white;font-weight:800}@media(max-width:600px){.teacher{grid-template-columns:1fr;gap:15px}.teacher-card{justify-self:stretch;max-width:none}.teacher-card .card{display:flex}.teacher-card .thumb{aspect-ratio:16/10}}

@media(max-width:600px){.hero h1{font-size:clamp(27px,8.4vw,40px)}.header{gap:12px}}@media(max-width:350px){.header .brand{font-size:12px;gap:8px}.header .brand small{font-size:8px}.header .home-link{font-size:9px;padding:7px 8px}.brand-icon{width:35px;height:35px}.sub-toolbar select{max-width:148px}}

.sticker{bottom:-38px}@media(max-width:600px){.sticker{bottom:-30px}}

.hero .course-title{font-size:clamp(29px,3.1vw,40px);line-height:1.55;letter-spacing:-.035em}.course-title span{display:block}.hero .hero-description{font-size:15px;line-height:2;font-weight:500;margin:24px 0 30px}@media(max-width:600px){.hero .course-title{font-size:clamp(21px,7.2vw,34px)}.hero .hero-description{font-size:14px;line-height:1.95}}