/* ============================================================
   BOOST — Direction B "Momentum"
   白×水色 / Outfit (見出し) + Noto Sans JP (本文)
   ============================================================ */

/* --- reset & base --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Noto Sans JP',system-ui,sans-serif;color:#14303F;line-height:1.85;-webkit-font-smoothing:antialiased;text-wrap:pretty}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
details>summary{list-style:none}
details>summary::-webkit-details-marker{display:none}

/* --- custom properties --- */
:root{
  --sky:#0A9BDB;
  --sky-lt:#16BBEF;
  --dark:#0C3A52;
  --mid:#3C5364;
  --muted:#557488;
  --faint:#7C97A8;
  --bg0:#F0F9FE;
  --bg1:#E3F3FC;
  --wrap:960px;
  --radius-lg:20px;
  --radius-md:14px;
  --shadow-card:0 8px 24px rgba(10,155,219,.10);
  --shadow-sky:0 10px 26px rgba(10,155,219,.30);
}

/* --- layout --- */
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 32px}
.sec{padding:84px 0}
.sec-blue{background:linear-gradient(180deg,var(--bg0) 0%,var(--bg1) 100%)}
.sec-head{text-align:center;max-width:620px;margin:0 auto 52px}
.sec-head .eyebrow{color:var(--sky);font-family:'Outfit',sans-serif;font-weight:700;font-size:12px;letter-spacing:.14em;display:block;text-transform:uppercase;margin-bottom:10px}
.sec-head h2{font-family:'Outfit',sans-serif;font-size:32px;font-weight:800;line-height:1.3;margin-bottom:12px;color:var(--dark)}
.sec-head p{color:var(--muted);font-size:15px}

/* --- buttons --- */
.btn{display:inline-block;background:var(--sky);color:#fff;font-weight:700;font-size:14px;padding:11px 24px;border-radius:999px;transition:opacity .15s,transform .1s}
.btn:hover{opacity:.88;transform:translateY(-1px)}
.btn-lg{font-size:16px;padding:15px 34px}
.btn-sky{background:linear-gradient(120deg,var(--sky),var(--sky-lt));box-shadow:var(--shadow-sky)}
.btn-ghost{background:rgba(255,255,255,.88);color:var(--sky)}
.btn-white{background:#fff;color:var(--sky)}

/* ============================================================
   NAV
   ============================================================ */
.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.95);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid #DCEEF9}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:66px}
.nav .brand{display:flex;align-items:center;gap:10px}
.nav .brand img{height:36px;width:36px;object-fit:contain;}
.nav .brand-name{font-family:'Outfit',sans-serif;font-weight:800;font-size:22px;letter-spacing:-.01em;color:var(--sky)}
.nav-links{display:flex;align-items:center;gap:24px}
.nav-links a{font-size:13.5px;font-weight:500;color:var(--mid);transition:color .15s}
.nav-links a:hover{color:var(--sky)}
.nav-links .btn{padding:10px 22px;box-shadow:0 6px 16px rgba(10,155,219,.22)}

/* ============================================================
   HERO
   ============================================================ */
.hero{background:linear-gradient(168deg,#EAF7FE 0%,#CFEAFA 58%,#B6DFF6 100%);padding:84px 0 0;overflow:hidden;position:relative}
.hero::before{content:'';position:absolute;left:-80px;bottom:-60px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.65),transparent 70%);pointer-events:none}
.hero::after{content:'';position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;background:radial-gradient(circle,rgba(10,155,219,.22),transparent 70%);pointer-events:none}
.hero .wrap{position:relative;z-index:2;text-align:center}
.hero .eyebrow{display:inline-block;background:#fff;color:var(--sky);font-size:12.5px;font-weight:700;padding:7px 18px;border-radius:999px;box-shadow:0 4px 14px rgba(10,155,219,.16);margin-bottom:26px}
.hero h1{font-family:'Outfit',sans-serif;font-size:54px;font-weight:800;line-height:1.22;color:var(--dark);margin-bottom:20px}
.hero h1 .em{background:linear-gradient(120deg,var(--sky),var(--sky-lt));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{font-size:17px;color:#3D5A6B;max-width:520px;margin:0 auto 34px}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:18px}
.hero-note{color:var(--muted);font-size:13px;margin-bottom:0}
.hero-note b{color:var(--dark)}
.hero-watermark{position:absolute;top:0;left:0;right:0;display:flex;justify-content:center;pointer-events:none;z-index:1;padding-top:30px;}
.hero-watermark img{width:480px;max-width:60%;opacity:.10;}
/* floating showcase card */
.hero-img{margin:44px auto 0;max-width:760px;background:#fff;border-radius:22px 22px 0 0;padding:10px 10px 0;box-shadow:0 -6px 40px rgba(10,127,184,.18)}
.hero-img image-slot{display:block;width:100%;height:380px;border-radius:16px 16px 0 0}
.hero-img img{display:block;width:100%;height:380px;object-fit:cover;border-radius:16px 16px 0 0}

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;margin-bottom:36px}
.about-main .lead-lg{font-family:'Outfit',sans-serif;font-size:20px;font-weight:800;line-height:1.7;margin-bottom:16px;color:var(--dark)}
.about-main p{color:var(--muted);font-size:15px;margin-bottom:14px}
.about-main p:last-child{margin-bottom:0}
.about-card{background:linear-gradient(160deg,var(--sky),#0A7FB8);color:#fff;border-radius:var(--radius-lg);padding:32px 30px}
.about-card ul{list-style:none}
.about-card li{display:flex;align-items:center;gap:12px;font-size:14px;font-weight:500;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.18)}
.about-card li:last-child{border-bottom:none}
.about-card li::before{content:'✓';flex:none;width:26px;height:26px;border-radius:50%;background:rgba(255,255,255,.25);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700}
.gallery{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:14px}
.gallery-2{grid-template-columns:1fr 1fr;}
.gallery image-slot{display:block;width:100%;height:166px;border-radius:var(--radius-md)}

/* ============================================================
   BENEFITS
   ============================================================ */
.cards{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.card{background:#fff;border-radius:var(--radius-lg);padding:30px 28px;box-shadow:var(--shadow-card)}
.card .icon-badge{width:52px;height:52px;border-radius:15px;background:linear-gradient(150deg,var(--sky),var(--sky-lt));display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.card .seller-logo{height:32px;object-fit:contain;margin-bottom:18px;display:block}
.card h3{font-family:'Outfit',sans-serif;font-size:17px;font-weight:800;margin-bottom:8px;color:var(--dark)}
.card p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.8}

/* ============================================================
   CURRICULUM
   ============================================================ */
.curri{max-width:700px;margin:0 auto 40px;display:flex;flex-direction:column;gap:22px}
.curri-item{display:flex;gap:22px;align-items:flex-start}
.curri-item .cn{flex:none;width:46px;height:46px;border-radius:14px;background:linear-gradient(150deg,var(--sky),var(--sky-lt));color:#fff;font-family:'Outfit',sans-serif;font-weight:800;font-size:18px;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(10,155,219,.26)}
.curri-item .info{padding-top:5px}
.curri-item h3{font-family:'Outfit',sans-serif;font-size:16.5px;font-weight:800;margin-bottom:5px;color:var(--dark)}
.curri-item p{font-size:13.5px;color:var(--muted);margin:0}
.topics{text-align:center}
.topics .lbl{font-size:13px;color:var(--muted);margin-bottom:14px}
.topic-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.topic-tags .hot{display:inline-block;background:linear-gradient(120deg,var(--sky),var(--sky-lt));color:#fff;border-radius:999px;padding:10px 24px;font-size:13.5px;font-weight:700;box-shadow:0 8px 20px rgba(10,155,219,.24)}

/* ============================================================
   PRICE
   ============================================================ */
.price-box{max-width:440px;margin:0 auto;background:#fff;border-radius:26px;overflow:hidden;box-shadow:0 26px 52px rgba(10,127,184,.22)}
.price-head{background:linear-gradient(160deg,var(--sky),#0A7FB8);padding:30px 34px;text-align:center;color:#fff}
.price-head .plan{font-family:'Outfit',sans-serif;font-weight:700;letter-spacing:.04em;font-size:13.5px;opacity:.9;margin-bottom:8px}
.price-head .amount{font-family:'Outfit',sans-serif;font-size:60px;font-weight:800;line-height:1;margin-bottom:4px}
.price-head .amount small{font-size:18px;font-weight:600}
.price-head .tax{font-size:13px;opacity:.85}
.price-body{padding:28px 34px 34px}
.price-body ul{list-style:none;margin-bottom:26px}
.price-body li{display:flex;gap:10px;padding:10px 0;border-bottom:1px solid #EDF5FA;font-size:14px;color:var(--mid)}
.price-body li::before{content:'✓';color:var(--sky);font-weight:700;flex:none}
.price-body li:last-child{border-bottom:none}
.price-body .btn{display:block;text-align:center;width:100%;font-size:16px;padding:17px;border-radius:14px}

/* ============================================================
   FLOW
   ============================================================ */
.steps{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.step{background:var(--bg0);border-radius:var(--radius-lg);padding:28px 26px}
.step .n{width:40px;height:40px;border-radius:13px;background:linear-gradient(150deg,var(--sky),var(--sky-lt));color:#fff;font-family:'Outfit',sans-serif;font-weight:800;font-size:17px;display:flex;align-items:center;justify-content:center;margin-bottom:14px;box-shadow:0 6px 14px rgba(10,155,219,.22)}
.step h3{font-family:'Outfit',sans-serif;font-size:16px;font-weight:800;margin-bottom:6px;color:var(--dark)}
.step p{font-size:13.5px;color:var(--muted);margin:0}

/* ============================================================
   FAQ
   ============================================================ */
.faq{max-width:700px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq details{background:#fff;border-radius:var(--radius-md);padding:2px 26px;box-shadow:0 4px 14px rgba(10,155,219,.07)}
.faq summary{cursor:pointer;font-weight:700;font-size:15px;padding:18px 0;color:var(--dark)}
.faq details p{font-size:14px;color:var(--mid);padding-bottom:18px;line-height:1.95}

/* ============================================================
   CTA BAND
   ============================================================ */
.cta-band{background:linear-gradient(135deg,var(--sky) 0%,var(--sky-lt) 100%);border-radius:26px;padding:60px 44px;text-align:center;position:relative;overflow:hidden;box-shadow:0 22px 48px rgba(10,155,219,.28)}
.cta-band::before{content:'';position:absolute;right:-50px;top:-50px;width:220px;height:220px;border-radius:50%;background:rgba(255,255,255,.14);pointer-events:none}
.cta-band::after{content:'';position:absolute;left:-30px;bottom:-40px;width:160px;height:160px;border-radius:50%;background:rgba(255,255,255,.10);pointer-events:none}
.cta-band h2{font-family:'Outfit',sans-serif;font-size:30px;font-weight:800;color:#fff;margin-bottom:12px;position:relative}
.cta-band p{color:#E4F6FE;font-size:15px;margin-bottom:28px;position:relative}
.cta-band .btn{position:relative;box-shadow:0 10px 28px rgba(0,0,0,.18)}

/* ============================================================
   FOOTER
   ============================================================ */
.foot{background:var(--dark);color:#A9C6D6;padding:56px 0 0}
.foot .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:44px;padding-bottom:40px}
.foot .brand{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.foot .brand img{height:36px;width:36px;object-fit:contain;filter:brightness(0) invert(1)}
.foot .brand-name{font-family:'Outfit',sans-serif;font-weight:800;font-size:20px;color:#fff}
.foot .brand-desc{font-size:13.5px;line-height:1.85;max-width:300px}
.foot-legal{display:flex;gap:18px;flex-wrap:wrap;margin-top:16px}
.foot-legal a{font-size:12.5px;color:#8FB3C7;transition:color .15s}
.foot-legal a:hover{color:#fff}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{font-size:13.5px;color:#A9C6D6;transition:color .15s}
.foot-links a:hover{color:#fff}
.foot-bottom{border-top:1px solid rgba(255,255,255,.10);padding:18px 32px;text-align:center;font-size:12px;color:#6E92A6}

/* ============================================================
   LEGAL PAGES
   ============================================================ */
body.legal-page{background:#F7FBFE}
.legal{max-width:780px;margin:0 auto;padding:64px 32px 96px}
.legal-back{display:inline-flex;align-items:center;gap:6px;color:var(--sky);font-size:14px;font-weight:700;margin-bottom:36px;transition:opacity .15s}
.legal-back:hover{opacity:.75}
.legal h1{font-family:'Outfit',sans-serif;font-size:32px;font-weight:800;color:var(--dark);margin-bottom:16px;line-height:1.3}
.legal .meta{font-size:14px;color:var(--muted);margin-bottom:44px;line-height:1.95;border-left:3px solid var(--sky);padding-left:16px}
.legal h2{font-family:'Outfit',sans-serif;font-size:17px;font-weight:800;color:var(--dark);margin:40px 0 10px;padding-bottom:8px;border-bottom:2px solid var(--bg1)}
.legal p{font-size:14.5px;color:#2E4A5A;line-height:2;margin-bottom:14px}
.legal ol.art{padding-left:22px;margin-bottom:14px}
.legal ol.art li{font-size:14.5px;color:#2E4A5A;line-height:2;margin-bottom:8px}
.legal .legal-foot{margin-top:64px;font-size:13px;color:var(--muted);border-top:1px solid #D8EDF6;padding-top:20px}
/* tokushoho table */
table.toku{width:100%;border-collapse:collapse;margin-bottom:14px}
table.toku th,table.toku td{text-align:left;padding:14px 18px;font-size:14.5px;border-bottom:1px solid #E0EEF5;vertical-align:top;line-height:1.9}
table.toku th{color:var(--dark);font-weight:700;white-space:nowrap;background:#F7FBFE;width:210px}
table.toku td{color:#2E4A5A}

/* ============================================================
   RESPONSIVE
   ============================================================ */
.cards-3{grid-template-columns:1fr 1fr 1fr;}
/* Seller Scope 目玉カード */
.card-seller{display:flex;align-items:center;gap:48px;background:linear-gradient(135deg,#EAF7FE 0%,#D4EFFC 100%);border:1.5px solid #A8DAFA;border-radius:var(--radius-lg);padding:36px 40px;margin-top:20px;box-shadow:0 12px 32px rgba(10,155,219,.12);}
.seller-logo-wrap{flex:none;text-align:center;background:#fff;border-radius:18px;padding:22px 28px;box-shadow:0 4px 16px rgba(10,155,219,.12);}
.seller-logo-wrap img{height:64px;object-fit:contain;display:block;margin:0 auto 14px;}
.seller-badge{display:inline-block;background:var(--sky);color:#fff;font-size:11.5px;font-weight:700;padding:5px 14px;border-radius:999px;letter-spacing:.04em;}
.seller-body h3{font-family:'Outfit',sans-serif;font-size:22px;font-weight:800;color:var(--dark);margin-bottom:10px;}
.seller-body p{font-size:15px;color:var(--muted);margin:0;line-height:1.85;}
@media(max-width:780px){.cards-3{grid-template-columns:1fr;}.card-seller{flex-direction:column;gap:24px;text-align:center;}.seller-logo-wrap img{margin:0 auto 12px;}}
  .hero h1{font-size:38px}
  .hero .lead{font-size:15px}
  .hero-img image-slot{height:260px}
  .about-grid{grid-template-columns:1fr}
  .gallery{grid-template-columns:1fr 1fr}
  .gallery image-slot:last-child{display:none}
  .cards{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .sec-head h2{font-size:26px}
  .nav-links a:not(.btn){display:none}
  table.toku{display:block;overflow-x:auto}
  table.toku th{width:140px}
}
@media(max-width:480px){
  .wrap{padding:0 18px}
  .hero{padding:56px 0 0}
  .hero h1{font-size:30px}
  .hero-cta{flex-direction:column;align-items:center}
  .cta-band{padding:44px 28px}
  .cta-band h2{font-size:24px}
  .legal h1{font-size:26px}
  .legal{padding:48px 18px 72px}
}