/* ONPU+ 紹介サイト（4ページ共通）。ドレミクエストの画面と同じ世界：パステル、濃い紫の輪郭、丸い書体。 */
:root{
  --ink:#3b2a4f;--muted:#5f5470;--purple:#6a4fd8;--purple-dark:#4f38b0;
  --paper:#fffaf5;--white:#fff;--line:#d9cfe6;
  --lavender:#efe7ff;--yellow:#fff0c9;--mint:#dcf5e7;--pink:#ffe3ee;--peach:#ffe9d9;
  --shadow:0 5px 0 var(--ink);
  --head:'Mochiy Pop One','M PLUS Rounded 1c',sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:24px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:'M PLUS Rounded 1c','Hiragino Maru Gothic ProN','Hiragino Kaku Gothic ProN','Yu Gothic',sans-serif;font-weight:500;font-size:16px;line-height:1.9;overflow-wrap:anywhere}
img{display:block;max-width:100%;height:auto}
a{color:var(--purple-dark);text-underline-offset:.25em}
a:focus-visible{outline:3px solid #b3540a;outline-offset:4px;border-radius:6px}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0;line-height:1.5;font-weight:800}
figure{margin:0}
ul{margin:0;padding:0;list-style:none}
table{width:100%;border-collapse:collapse}
.wrap{width:min(1080px,calc(100% - 64px));margin-inline:auto}
.note,.availability{color:var(--muted);font-size:13px;line-height:1.8}
.availability{margin:10px 0 0}
.availability::before{content:"※ "}
.todo{background:#fff0a8;color:#4a360c;border-bottom:2px solid #967120;padding:2px 4px;border-radius:3px;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.nowrap{white-space:nowrap}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.skip-link{position:fixed;z-index:10;top:8px;left:16px;padding:12px 20px;background:var(--ink);color:#fff;border-radius:8px;transform:translateY(-200%)}
.skip-link:focus{transform:translateY(0)}

/* ヘッダー */
.site-header{background:var(--paper);border-bottom:2px solid var(--ink)}
.header-inner{display:flex;align-items:center;gap:28px;min-height:76px}
.brand{display:inline-flex;align-items:center;min-height:44px;color:var(--ink);font-family:Arial,sans-serif;font-size:28px;line-height:1;font-weight:900;letter-spacing:-.05em;text-decoration:none;white-space:nowrap}
.brand span{color:var(--purple);margin-left:2px}
.main-nav{display:flex;gap:22px;margin-left:auto}
.main-nav a{display:inline-flex;align-items:center;min-height:44px;color:var(--ink);font-size:14px;font-weight:700;text-decoration:none;white-space:nowrap}
.main-nav a:hover{text-decoration:underline}
.header-cta{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:6px 20px;background:var(--purple);color:#fff;border:2px solid var(--ink);border-radius:999px;box-shadow:0 3px 0 var(--ink);font-size:14px;font-weight:800;text-decoration:none;white-space:nowrap}
.header-cta:hover{background:var(--purple-dark)}

/* ボタン */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:56px;padding:12px 30px;background:var(--purple);color:#fff;border:2px solid var(--ink);border-radius:999px;box-shadow:var(--shadow);font-size:16px;font-weight:800;text-decoration:none;transition:transform .12s ease,box-shadow .12s ease}
.btn:hover{background:var(--purple-dark)}
.btn:active{transform:translateY(3px);box-shadow:0 2px 0 var(--ink)}
.btn-sub{background:var(--white);color:var(--ink)}
.btn-sub:hover{background:var(--lavender)}
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px 18px;margin:28px 0 16px}
[aria-disabled="true"]{cursor:not-allowed}

/* 先頭 */
.hero{background:linear-gradient(135deg,#e6dcff 0%,#fde9f1 55%,#ffe9d9 100%);border-bottom:2px solid var(--ink)}
.hero-inner{display:grid;grid-template-columns:1fr 1.08fr;align-items:center;gap:56px;padding-block:64px 72px}
.product{display:inline-flex;align-items:center;gap:12px;margin:0 0 22px;padding:6px 18px 6px 6px;background:var(--white);border:2px solid var(--ink);border-radius:999px;font-size:14px;font-weight:800;line-height:1.4}
.product img{width:40px;height:40px;border-radius:50%;border:2px solid var(--ink)}
.hero h1{font-family:var(--head);font-weight:400;font-size:clamp(34px,4.6vw,56px);line-height:1.35;letter-spacing:.02em;margin-bottom:22px}
.hero h1 em{font-style:normal;color:var(--purple)}
.hero .lead{max-width:30em;font-size:16px;margin-bottom:0}
.hero .note{margin:0;color:var(--ink)}
.device{padding:10px;background:var(--ink);border-radius:22px;box-shadow:0 14px 30px #3b2a4f2e}
.device img{width:100%;border-radius:13px}
.hero-shot figcaption{margin-top:14px;text-align:center;font-size:13px;font-weight:700}

/* 共通の区切り */
.section{padding-block:80px}
.section-head{max-width:40em;margin-bottom:36px}
.kicker{display:inline-block;margin:0 0 12px;padding:2px 14px;background:var(--ink);color:#fff;border-radius:999px;font-size:12px;font-weight:800;letter-spacing:.06em}
.section-head h2,.split h2{font-family:var(--head);font-weight:400;font-size:clamp(24px,3vw,34px);line-height:1.45}
.section-head p{margin:14px 0 0;font-size:15px}
.band{background:var(--white);border-block:2px solid var(--ink)}

/* どんなゲーム：3つの画面 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.step{background:var(--white);border:2px solid var(--ink);border-radius:20px;box-shadow:var(--shadow);overflow:hidden}
.step img{width:100%;border-bottom:2px solid var(--ink)}
.step-body{padding:18px 20px 22px}
.step h3{display:flex;align-items:center;gap:10px;font-size:18px;margin-bottom:8px}
.step-no{flex:none;display:grid;place-items:center;width:30px;height:30px;background:var(--purple);color:#fff;border:2px solid var(--ink);border-radius:50%;font-family:var(--head);font-size:14px;font-weight:400;line-height:1}
.step p{margin:0;font-size:14px;line-height:1.8}

/* 特徴：アプリの入口と同じ4色のカード */
.features{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:40px}
.feature{padding:24px 26px;border:2px solid var(--ink);border-radius:20px}
.feature:nth-child(1){background:var(--lavender)}
.feature:nth-child(2){background:var(--yellow)}
.feature:nth-child(3){background:var(--mint)}
.feature:nth-child(4){background:var(--pink)}
.feature h3{font-size:18px;margin-bottom:8px}
.feature p{margin:0;font-size:14px;line-height:1.85}
.device-note{margin:26px 0 0}

/* 先生へ */
.split{display:grid;grid-template-columns:.8fr 1.4fr;gap:56px;align-items:start}
.split-head p{margin:16px 0 0;font-size:15px}
.teacher-list{display:grid;grid-template-columns:repeat(2,1fr);gap:0 36px}
.teacher-list li{padding:22px 0;border-top:2px dashed var(--line)}
.teacher-list h3{font-size:17px;margin-bottom:6px}
.teacher-list p{margin:0;font-size:14px;line-height:1.85}
.child-info{display:grid;grid-template-columns:auto 1fr;gap:20px;align-items:start;margin-top:44px;padding:26px 28px;background:var(--mint);border:2px solid var(--ink);border-radius:20px}
.child-mark{display:grid;place-items:center;width:52px;height:52px;background:var(--white);border:2px solid var(--ink);border-radius:50%;font-family:var(--head);font-size:22px;line-height:1}
.child-info h3{font-size:18px;margin-bottom:6px}
.child-info p{margin:0;font-size:14px;line-height:1.85}
.child-info a{display:inline-flex;align-items:center;min-height:44px;font-size:14px;font-weight:700}

/* 料金 */
.plan-main{display:grid;grid-template-columns:1fr 1.1fr;background:var(--white);border:2px solid var(--ink);border-radius:22px;box-shadow:var(--shadow);overflow:hidden}
.plan-summary{padding:34px 34px 30px;background:var(--lavender);border-right:2px solid var(--ink)}
.plan-tag{display:inline-block;margin:0 0 12px;padding:2px 12px;background:var(--purple);color:#fff;border-radius:999px;font-size:12px;font-weight:800}
.plan-main h3,.plan-card h3{font-size:24px;line-height:1.4}
.plan-main h3 span,.plan-card h3 span{display:block;margin-top:4px;font-size:13px;font-weight:500}
.plan-summary ul{margin-top:18px}
.plan-summary li{position:relative;padding:6px 0 6px 26px;font-size:14px;line-height:1.8}
.plan-summary li::before{content:"";position:absolute;left:2px;top:15px;width:12px;height:7px;border-left:3px solid var(--purple);border-bottom:3px solid var(--purple);transform:rotate(-45deg)}
.plan-prices{padding:30px 32px}
.price th,.price td{text-align:left;padding:15px 6px;border-bottom:2px dashed var(--line)}
.price th{padding-top:0;color:var(--muted);font-size:12px;font-weight:700}
.price td{font-size:17px;font-weight:800;white-space:nowrap;font-variant-numeric:tabular-nums}
.price td:first-child{font-size:14px;font-weight:700}
.plan-prices .note{margin:14px 0 0}
.plan-others{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:26px}
.plan-card{padding:28px 30px;background:var(--white);border:2px solid var(--ink);border-radius:20px}
.plan-card h3{font-size:20px;margin-bottom:12px}
.plan-card p{margin:0;font-size:14px;line-height:1.85}
.plan-card .amount{font-size:16px;font-weight:800}
.payment-note{margin:24px 0 0}
.payment-note + .payment-note{margin-top:2px}
.payment-note a{display:inline-flex;align-items:center;min-height:44px}

/* 先行登録 */
.preorder{background:var(--ink);color:#fff;border-radius:26px;padding:48px 52px;display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.preorder .kicker{background:#ffd76a;color:var(--ink)}
.preorder h2{font-family:var(--head);font-weight:400;font-size:clamp(24px,3vw,34px);line-height:1.45;margin-bottom:14px}
.preorder p{font-size:15px;margin:0}
.preorder .release{margin-top:14px;color:#e6dcf2;font-size:13px}
.perk{padding:22px 24px;background:#4d3a64;border:2px solid #8f7ba8;border-radius:18px}
.perk-label{margin:0 0 4px;color:#ffd76a;font-size:12px;font-weight:800;letter-spacing:.06em}
.perk-main{font-family:var(--head);font-size:22px;line-height:1.5}
.perk .perk-sub{margin-top:6px;color:#e6dcf2;font-size:13px}
.preorder .actions{margin:22px 0 8px}
.preorder .btn{background:#ffd76a;color:var(--ink);border-color:#fff;box-shadow:0 5px 0 #1f1430;max-width:100%}
.preorder .pending{color:#e6dcf2;font-size:12px}

/* よくある質問 */
.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:20px 26px}
.faq{padding:22px 24px;background:var(--white);border:2px solid var(--ink);border-radius:18px}
.faq h3{display:flex;gap:10px;font-size:16px;line-height:1.6;margin-bottom:8px}
.q{flex:none;color:var(--purple);font-family:var(--head);font-weight:400}
.faq p{margin:0;font-size:14px;line-height:1.85}

/* ONPU+ について・お問い合わせ */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.about-card{padding:30px 32px;border:2px solid var(--ink);border-radius:20px;background:var(--peach)}
.about-card.contact{background:var(--white)}
.about-card h2{font-size:20px;margin-bottom:10px}
.about-card p{margin:0 0 .6em;font-size:14px;line-height:1.85}
.about-card p:last-child{margin-bottom:0}
.about-card a{display:inline-flex;align-items:center;min-height:44px;max-width:100%;font-weight:700}
.vision{font-family:var(--head);font-size:18px;line-height:1.6}

/* フッター */
.site-footer{margin-top:80px;background:var(--ink);color:#fff;padding-block:40px 26px}
.legal-page .site-footer{margin-top:0}
.footer-inner{display:grid;grid-template-columns:1fr auto;gap:20px;align-items:start}
.site-footer .brand{color:#fff}
.site-footer .brand span{color:#c9b8ff}
.footer-tagline{margin:6px 0 0;color:#e6dcf2;font-size:12px}
.footer-nav{display:flex;flex-wrap:wrap;gap:4px 24px}
.footer-nav a{display:inline-flex;align-items:center;min-height:44px;color:#fff;font-size:13px}
.copyright{grid-column:1/-1;margin:0;color:#cfc3dd;font-family:Arial,sans-serif;font-size:11px}

/* 規約類のページ（本文の文と構造は変えない。落ち着いた組み方） */
.legal-main{max-width:920px;padding-bottom:72px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:12px;padding-block:18px 14px;color:var(--muted);font-size:12px}
.breadcrumb a{display:inline-flex;align-items:center;min-width:44px;min-height:44px}
.doc{padding:44px 52px;background:var(--white);border:2px solid var(--ink);border-radius:20px}
.doc h1{font-size:clamp(24px,3vw,32px);padding-bottom:24px;margin-bottom:28px;border-bottom:2px dashed var(--line)}
.doc h2{font-size:18px;margin:32px 0 12px}
.doc p,.doc li,.doc td{font-size:15px;line-height:2}
.doc .note{font-size:13px}
.doc ul,.doc ol{padding-left:1.6em;margin-block:0 20px}
.doc ul{list-style:disc}
.doc li{margin-bottom:8px;padding-left:4px}
.doc th,.doc td{text-align:left;padding:18px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.doc th{width:27%;font-size:14px;font-weight:700}

@media(max-width:960px){
  .hero-inner{grid-template-columns:1fr;gap:36px;padding-block:44px 52px}
  .hero-shot{width:min(100%,620px);margin-inline:auto}
  .steps{grid-template-columns:1fr;gap:22px;max-width:560px;margin-inline:auto}
  .split{grid-template-columns:1fr;gap:20px}
  .plan-main{grid-template-columns:1fr}
  .plan-summary{border-right:0;border-bottom:2px solid var(--ink)}
  .preorder{grid-template-columns:1fr;gap:28px;padding:40px 36px}
  .footer-inner{grid-template-columns:1fr}
}
@media(max-width:720px){
  .wrap{width:calc(100% - 40px)}
  .header-inner{display:grid;grid-template-columns:1fr auto;gap:0 12px;padding-block:10px 4px;min-height:0}
  .brand{font-size:26px}
  .main-nav{grid-column:1/-1;grid-row:2;margin-left:0;justify-content:space-between;gap:8px}
  .main-nav a{font-size:13px}
  .section{padding-block:52px}
  .section-head{margin-bottom:26px}
  .hero .lead{font-size:15px}
  .actions .btn{width:100%}
  .features,.teacher-list,.plan-others,.faq-list,.about-grid{grid-template-columns:1fr}
  .features{gap:16px;margin-top:28px}
  .feature{padding:20px}
  .child-info{grid-template-columns:1fr;gap:12px;padding:22px 20px;margin-top:30px}
  .plan-summary{padding:26px 22px}
  .plan-prices{padding:24px 18px}
  .price td{font-size:15px}
  .price td:first-child{font-size:13px}
  .plan-card{padding:24px 22px}
  .preorder{padding:32px 22px;border-radius:20px}
  .perk-main{font-size:19px}
  .about-card{padding:24px 22px}
  .site-footer{margin-top:52px}
  .footer-nav{flex-direction:column;gap:0}
  .legal-main{padding-bottom:40px}
  .doc{padding:26px 20px}
  .doc h1{padding-bottom:20px;margin-bottom:22px}
  .doc p,.doc li,.doc td{font-size:14px}
  .doc th,.doc td{display:block;width:100%;padding-inline:0}
  .doc th{border-bottom:0;padding:16px 0 2px}
  .doc td{padding:0 0 16px}
}
@media(max-width:360px){
  .wrap{width:calc(100% - 32px)}
  .hero h1{font-size:28px}
  .product{font-size:13px}
  .btn{font-size:15px;padding-inline:16px}
  .main-nav a{font-size:12px}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}