@charset "UTF-8";
:root{
  --orange:#f05200;--orange2:#ff7214;--ink:#111;--white:#fff;
  --soft:#fff4ec;--gray:#6b6b6b;--line:#e7e4e1;--max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Noto Sans JP","Yu Gothic",Meiryo,sans-serif;color:var(--ink);line-height:1.8;background:#fff}
a{text-decoration:none;color:inherit}
.container{width:min(calc(100% - 40px),var(--max));margin:auto}
.narrow{max-width:900px}
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.topbar-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:43px;height:43px;border-radius:11px;background:var(--orange);color:#fff;display:grid;place-items:center;font-weight:1000;font-size:1.45rem}
.brand b{display:block;font-size:1.15rem;line-height:1.2}.brand small{display:block;color:#777;font-size:.75rem}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:10px 24px;border-radius:999px;font-weight:900;border:2px solid transparent;transition:.2s}
.btn:hover{transform:translateY(-2px)}
.btn-small{min-height:42px;padding:8px 18px}
.btn-dark,.btn-black{background:#111;color:#fff}.btn-white{background:#fff;color:#111}
.btn-large{min-height:62px;padding:12px 30px}
.hero{position:relative;overflow:hidden;background:linear-gradient(120deg,var(--orange),var(--orange2));color:#fff}
.hero-bg{position:absolute;right:-40px;top:-130px;font-size:34rem;line-height:1;font-weight:1000;color:rgba(255,255,255,.12);transform:rotate(-7deg)}
.hero-grid{position:relative;z-index:2;min-height:650px;display:grid;grid-template-columns:1.3fr .7fr;align-items:center;gap:70px;padding:80px 0}
.eyebrow,.kicker{font-weight:1000;letter-spacing:.12em;color:var(--orange);margin:0 0 12px}.eyebrow{color:#fff}
.hero h1{font-size:clamp(3.7rem,8vw,7rem);line-height:1.03;letter-spacing:-.05em;margin:0}.hero h1 span{color:#fff;text-shadow:5px 5px 0 #111}
.lead{font-size:1.3rem;font-weight:700;margin:28px 0}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.campaign-card{background:#fff;color:#111;border-radius:26px;padding:34px;box-shadow:0 24px 60px rgba(0,0,0,.2);text-align:center}
.campaign-label{display:inline-block;background:#111;color:#fff;padding:5px 14px;border-radius:999px;font-weight:900;font-size:.85rem}
.campaign-date{font-weight:900;color:var(--orange);margin:16px 0 4px}
.campaign-card>strong{display:block;font-size:2rem;line-height:1.2}.campaign-card em{font-style:normal;font-size:5.2rem;color:var(--orange)}
.campaign-card small{display:block;color:#777;font-size:.75rem}
.quick-nav{border-bottom:1px solid var(--line);background:#fff}
.nav-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.nav-grid a{padding:22px 16px;text-align:center;border-right:1px solid var(--line)}
.nav-grid a:first-child{border-left:1px solid var(--line)}
.nav-grid b{display:block}.nav-grid span{display:block;font-size:.8rem;color:#888}
.section{padding:105px 0}.soft{background:var(--soft)}
.section h2{font-size:clamp(2.4rem,5vw,4.8rem);line-height:1.2;letter-spacing:-.04em;margin:0 0 34px}.section h2 span{color:var(--orange)}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.price-card{border:2px solid var(--line);border-radius:24px;padding:30px;background:#fff}
.price-card.featured{border-color:var(--orange);box-shadow:0 16px 45px rgba(240,82,0,.13)}
.price-label{font-weight:900;margin:0 0 8px}.price strong{font-size:3.5rem;line-height:1;color:var(--orange)}.price span{font-weight:900;margin-left:5px}.price.smaller strong{font-size:3rem}
.pill{display:inline-block;background:var(--orange);color:#fff;padding:4px 12px;border-radius:999px;font-size:.8rem;font-weight:900}
.campaign-strip{margin-top:18px;padding:12px;background:var(--soft);border-radius:10px}.campaign-strip b{color:var(--orange)}
.notice{margin-top:28px;background:#111;color:#fff;border-radius:16px;padding:24px 28px}.notice b{color:#ff8e50;font-size:1.15rem}.notice p{margin:5px 0 0}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.big-copy{font-size:1.3rem;font-weight:900}
.age-card{background:#fff;border-radius:24px;padding:34px;box-shadow:0 16px 45px rgba(0,0,0,.08)}
.age-range{display:flex;align-items:baseline;justify-content:center;gap:8px;border-bottom:1px solid var(--line);padding-bottom:24px}
.age-range>span{background:var(--orange);color:#fff;padding:4px 10px;border-radius:999px;font-size:.75rem;font-weight:900}.age-range strong{font-size:4.5rem;color:var(--orange);line-height:1}.age-range i{font-style:normal;font-weight:900}.age-range b{font-size:2rem}
.child-note{padding-top:22px}.child-note b{font-size:1.1rem}.child-note p{color:#555;margin-bottom:0}
.dark-section{background:#111;color:#fff}.light{color:#ff965c!important}.section-lead{max-width:800px;font-size:1.15rem;color:#ccc}
.flow{display:flex;align-items:center;gap:15px;margin-top:44px}.flow article{flex:1;min-height:280px;background:#1d1d1d;border:1px solid #333;border-radius:22px;padding:28px;position:relative}.step{position:absolute;right:20px;top:18px;color:#555;font-weight:1000;font-size:1.4rem}.flow .icon{width:64px;height:64px;border-radius:16px;background:var(--orange);display:grid;place-items:center;font-size:1.8rem}.flow h3{font-size:1.4rem;margin:18px 0 8px}.flow p{color:#bbb}.arrow{font-size:2rem;color:var(--orange);font-weight:1000}

.warning{background:var(--orange);color:#fff;padding:75px 0}.warning-inner{display:grid;grid-template-columns:auto 1fr;gap:34px;align-items:center}.warning-mark{width:92px;height:92px;border-radius:50%;background:#111;display:grid;place-items:center;font-size:4rem;font-weight:1000}.warning-label{font-weight:1000;letter-spacing:.15em}.warning h2{font-size:clamp(2.4rem,5vw,4.5rem);line-height:1.15;margin:0 0 16px}.warning h2 span{background:#111;padding:0 8px}.warning p:last-child{font-size:1.05rem;max-width:900px}
.join-box{display:grid;grid-template-columns:1fr 1fr;background:#fff;border-radius:24px;padding:36px;gap:40px;box-shadow:0 15px 45px rgba(0,0,0,.08)}.join-badge{display:inline-block;background:#111;color:#fff;padding:5px 12px;border-radius:999px;font-weight:900}.join-box h3{font-size:2rem;color:var(--orange);margin:15px 0 8px}
.calendar-demo{border:1px solid var(--line);border-radius:14px;overflow:hidden}.cal-head{background:#111;color:#fff;padding:12px 16px;font-weight:900}.cal-row{display:flex;justify-content:space-between;padding:14px 16px;border-top:1px solid var(--line)}.cal-row .orange{color:var(--orange)}
.extra-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.extra-grid article{border-top:6px solid var(--orange);background:#fafafa;padding:25px;border-radius:14px}.extra-grid span{color:var(--orange);font-weight:1000}.extra-grid h3{margin:8px 0}.extra-grid p{color:#666;font-size:.92rem}
.faq details{border-bottom:1px solid var(--line);padding:21px 0}.faq summary{cursor:pointer;font-weight:900;font-size:1.08rem}.faq details p{color:#666}
.cta{background:linear-gradient(120deg,var(--orange),var(--orange2));color:#fff;text-align:center;padding:95px 0}.cta>div>p:first-child{font-weight:900;font-size:1.3rem}.cta h2{font-size:clamp(3rem,7vw,6rem);line-height:1.1;margin:8px 0 30px;text-shadow:4px 4px 0 #111}.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}.cta-note{font-weight:900;margin-top:22px}
footer{background:#0c0c0c;color:#fff;padding:42px 0}.footer-inner{display:flex;justify-content:space-between;gap:30px}.footer-inner p{color:#888;margin:4px 0 0}.footer-inner nav{display:flex;gap:18px;flex-wrap:wrap}
.back-top{position:fixed;right:22px;bottom:22px;width:48px;height:48px;border:0;border-radius:50%;background:#111;color:#fff;font-size:1.3rem;cursor:pointer;opacity:0;pointer-events:none;transition:.2s;z-index:40}.back-top.show{opacity:1;pointer-events:auto}
@media(max-width:900px){
  .hero-grid,.two-col{grid-template-columns:1fr}.hero-grid{gap:35px}.nav-grid{grid-template-columns:repeat(4,180px);overflow-x:auto}.quick-nav .container{width:100%}
  .price-grid{grid-template-columns:1fr}.flow{flex-direction:column}.flow article{width:100%;min-height:0}.arrow{transform:rotate(90deg)}
  .info-grid{grid-template-columns:1fr}.extra-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:600px){
  .container{width:min(calc(100% - 28px),var(--max))}.topbar-inner{height:66px}.brand small{display:none}.brand b{font-size:.95rem}
  .hero-grid{padding:60px 0}.hero h1{font-size:3.4rem}.pc{display:none}.hero-actions{flex-direction:column}.hero-actions .btn{width:100%}
  .section{padding:72px 0}.section h2{font-size:2.5rem}.campaign-card em{font-size:4.2rem}
  .age-range{flex-wrap:wrap}.age-range strong{font-size:3.5rem}
  .warning-inner{grid-template-columns:1fr}.warning-mark{width:70px;height:70px;font-size:3rem}.join-box{grid-template-columns:1fr;padding:24px}.extra-grid{grid-template-columns:1fr}
  .footer-inner{flex-direction:column}.cta-actions{flex-direction:column}.cta-actions .btn{width:100%}
}

/* v1.1: シリーズ講座の段階開放説明 */
.series-release{
  margin-top:48px;
  padding:34px;
  border:1px solid #343434;
  border-radius:24px;
  background:linear-gradient(145deg,#171717,#202020);
}
.series-release-head{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:18px;
  align-items:start;
}
.series-badge{
  display:inline-block;
  width:max-content;
  padding:6px 13px;
  border-radius:999px;
  background:var(--orange);
  color:#fff;
  font-size:.8rem;
  font-weight:900;
}
.series-release h3{
  margin:0;
  font-size:clamp(1.55rem,3vw,2.5rem);
  line-height:1.35;
}
.series-release h3 strong{color:#ff8f52}
.series-lead{
  max-width:900px;
  margin:22px 0 0;
  color:#ccc;
}
.series-lead strong{color:#fff}
.release-steps{
  display:grid;
  grid-template-columns:1fr .9fr 1fr .9fr 1fr;
  gap:12px;
  align-items:center;
  margin-top:30px;
}
.release-item{
  min-height:150px;
  border:1px solid #3b3b3b;
  border-radius:18px;
  background:#101010;
  padding:22px 18px;
  text-align:center;
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.release-item.active{
  border:2px solid var(--orange);
  box-shadow:0 0 0 4px rgba(240,82,0,.08);
}
.release-item span{
  color:#ff955e;
  font-size:.85rem;
  font-weight:900;
}
.release-item b{
  font-size:1.3rem;
  margin:5px 0;
}
.release-item small{color:#999}
.release-line{
  text-align:center;
  color:#aaa;
  font-size:.78rem;
}
.release-line span{display:block}
.release-line i{
  display:block;
  color:var(--orange);
  font-size:1.2rem;
  font-style:normal;
  font-weight:1000;
  margin:3px 0;
}
.series-example{
  margin-top:26px;
  padding:20px 22px;
  border-left:5px solid var(--orange);
  background:#111;
  border-radius:8px;
}
.series-example>b{color:#ff955e}
.series-example p{margin:5px 0 0;color:#ddd}
.series-example strong{color:#fff}
.series-note{font-size:.78rem;color:#888;margin:14px 0 0}

@media(max-width:900px){
  .series-release-head{grid-template-columns:1fr}
  .release-steps{grid-template-columns:1fr}
  .release-line{padding:4px 0}
  .release-line::after{content:"↓";display:block;color:var(--orange);font-size:1.5rem;font-weight:1000;margin-top:5px}
}
@media(max-width:600px){
  .series-release{padding:24px 18px}
}

/* v1.2: 長期運用向け・時限情報を除外 */
.hero-grid{
  grid-template-columns:1fr;
  max-width:900px;
}
.price-intro{
  color:#555;
  margin-top:-10px;
  margin-bottom:28px;
}
.join-box strong{color:var(--orange)}

/* v1.3: 公式HPのキャンペーン案内 */
.campaign-guide{
  margin-top:18px;
  display:flex;
  gap:16px;
  align-items:flex-start;
  padding:20px 22px;
  border:2px solid var(--orange);
  border-radius:16px;
  background:#fff8f3;
}
.campaign-guide-icon{
  flex:0 0 auto;
  width:34px;
  height:34px;
  border-radius:50%;
  display:grid;
  place-items:center;
  background:var(--orange);
  color:#fff;
  font-weight:1000;
  font-family:Georgia,serif;
  font-size:1.05rem;
}
.campaign-guide b{
  display:block;
  color:var(--orange);
  font-size:1.08rem;
  line-height:1.5;
}
.campaign-guide p{
  margin:6px 0 8px;
  color:#555;
  font-size:.92rem;
}
.campaign-guide a{
  display:inline-block;
  font-weight:900;
  color:#111;
  text-decoration:underline;
  text-underline-offset:3px;
}



/* v1.4: ポイント制・キャンペーン表示 */
.notice-sub{
  margin-top:6px!important;
  color:#d8d8d8;
  font-size:.82rem;
}
.point-system-box{
  margin:34px 0 30px;
  padding:32px;
  border:2px solid var(--orange);
  border-radius:24px;
  background:linear-gradient(145deg,#fff,#fff8f3);
  box-shadow:0 16px 42px rgba(240,82,0,.10);
}
.point-system-title{
  display:flex;
  align-items:center;
  gap:14px;
  flex-wrap:wrap;
}
.point-system-title h3{
  margin:0;
  font-size:clamp(1.35rem,2.4vw,2rem);
  line-height:1.45;
}
.point-system-lead{
  margin:18px 0 0;
  color:#555;
}
.point-cycle{
  display:grid;
  grid-template-columns:1fr 48px 1fr 48px 1fr;
  gap:12px;
  align-items:center;
  margin-top:26px;
}
.point-cycle article{
  min-height:170px;
  padding:22px 20px;
  border:1px solid var(--line);
  border-radius:18px;
  background:#fff;
  text-align:center;
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.point-cycle article span{
  color:var(--orange);
  font-size:.78rem;
  font-weight:1000;
  letter-spacing:.08em;
}
.point-cycle article b{
  display:block;
  margin:4px 0;
  font-size:1.45rem;
}
.point-cycle article p{
  margin:5px 0 0;
  color:#666;
  font-size:.9rem;
}
.point-cycle-main{
  border-color:var(--orange)!important;
  box-shadow:0 0 0 4px rgba(240,82,0,.07);
}
.point-arrow{
  text-align:center;
  color:var(--orange);
  font-size:2rem;
  font-weight:1000;
}
.point-shortage{
  margin-top:22px;
  padding:20px 22px;
  border-radius:14px;
  background:#111;
  color:#fff;
}
.point-shortage b{
  color:#ff965c;
  font-size:1.08rem;
}
.point-shortage p{
  margin:5px 0 0;
  color:#ddd;
}
.campaign-box{
  margin-top:22px;
  padding:26px;
  border:2px solid #111;
  border-radius:20px;
  background:#fff;
}
.campaign-box-head{
  display:flex;
  align-items:center;
  gap:14px;
  margin-bottom:18px;
}
.campaign-box-icon{
  flex:0 0 auto;
  width:42px;
  height:42px;
  border-radius:50%;
  display:grid;
  place-items:center;
  background:var(--orange);
  color:#fff;
  font-weight:1000;
}
.campaign-box-head b{
  display:block;
  font-size:1.25rem;
}
.campaign-box-head p{
  margin:2px 0 0;
  color:#777;
  font-size:.85rem;
}
.campaign-media{
  overflow:hidden;
  border-radius:14px;
  background:#f5f5f5;
  border:1px solid var(--line);
}
.campaign-media img{
  display:block;
  width:100%;
  height:auto;
}
.campaign-fallback{
  margin:0;
  padding:48px 20px;
  text-align:center;
  color:#777;
  font-weight:900;
}
.numbered-flow .release-line{
  font-size:1.3rem;
}
.numbered-flow .release-line i{
  font-size:2rem;
}

@media(max-width:900px){
  .point-cycle{
    grid-template-columns:1fr;
  }
  .point-arrow{
    transform:rotate(90deg);
  }
}