/* おたんこゲームズ: 生成りの背景・淡い色・影なしのフラットな見た目（ゲームと同じ色） */
:root {
  --bg: #F6F4F0;
  --card: #FCFBF8;
  --surface: #EFECE7;
  --band: #EEEBE5;
  --empty: #E9E6E0;
  --ink: #4B4A52;
  --ink2: #6E6C72;
  --sub: #9A968F;
  --line: #E4E0DA;
  --mint: #DDEFE6;   --mint-ink: #5E8C78;
  --blue: #DDE7F4;   --blue-ink: #5B7699;
  --lilac: #E7E1F3;  --lilac-ink: #7B6A9E;
  --pink: #F4E0E7;   --pink-ink: #A0677D;
  --peach: #F6E7D8;  --peach-ink: #A57A55;
  --red: #F2D8D3;
  --wide: 1040px;
  --text: 720px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Yu Gothic", YuGothic, Meiryo, "Noto Sans JP", sans-serif;
  line-height: 1.9; letter-spacing: .03em;
  display: flex; flex-direction: column; min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
main { flex: 1; width: 100%; }
a { color: var(--blue-ink); text-underline-offset: 3px; }
img { max-width: 100%; height: auto; display: block; }
:focus-visible { outline: 2px solid #A9BEDA; outline-offset: 3px; border-radius: 10px; }
.wrap { max-width: var(--wide); margin: 0 auto; padding: 0 32px; }
.wrap.text { max-width: calc(var(--text) + 64px); }

/* 数字の色（ゲームと同じ） */
.c1 { background: var(--mint);  color: var(--mint-ink); }
.c2 { background: var(--blue);  color: var(--blue-ink); }
.c3 { background: var(--lilac); color: var(--lilac-ink); }
.c4 { background: var(--pink);  color: var(--pink-ink); }
.c5 { background: var(--peach); color: var(--peach-ink); }

/* ロゴ */
.logo { display: inline-flex; align-items: center; gap: 12px; color: var(--ink); text-decoration: none; font-size: 1.05rem; font-weight: 600; letter-spacing: .08em; }
.mark { display: grid; grid-template-columns: repeat(2, 11px); gap: 3px; }
.mark i { width: 11px; height: 11px; border-radius: 3.5px; background: var(--empty); }
.mark i:nth-child(1) { background: var(--mint); }
.mark i:nth-child(4) { background: var(--blue); }

/* ヘッダー */
header.site { position: sticky; top: 0; z-index: 10; background: rgba(246, 244, 240, .88); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); border-bottom: 1px solid transparent; transition: border-color .2s; }
header.site.scrolled { border-bottom-color: var(--line); }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 72px; }
header.site nav { display: flex; gap: 6px; font-size: .88rem; }
header.site nav a { color: var(--ink2); text-decoration: none; padding: 6px 14px; border-radius: 99px; transition: background .15s, color .15s; white-space: nowrap; }
header.site nav a:hover { background: var(--surface); color: var(--ink); }
header.site nav a[aria-current="page"] { background: var(--surface); color: var(--ink); }

/* 見出し・本文 */
h1 { font-weight: 600; font-size: 2rem; line-height: 1.45; margin: 0; letter-spacing: .04em; }
h2 { font-weight: 600; font-size: 1.25rem; line-height: 1.5; margin: 0 0 16px; letter-spacing: .04em; }
h3 { font-weight: 600; font-size: 1rem; margin: 0 0 4px; }
p, li { font-size: 1rem; }
.eyebrow { display: block; font-size: .76rem; font-weight: 600; letter-spacing: .2em; color: var(--sub); margin-bottom: 10px; text-transform: uppercase; }
.lead { color: var(--ink2); margin: 0; }
section.block { padding: 72px 0 0; }
.block-head { text-align: center; margin-bottom: 32px; }
.block-head p { color: var(--ink2); margin: 0; }
.card { background: var(--card); border-radius: 24px; padding: 24px 28px; }

/* ページの頭（下層ページ） */
.page-head { padding: 64px 0 40px; text-align: center; }
.page-head .lead { margin-top: 12px; }

/* トップ: ヒーロー */
.hero { padding: 104px 0 40px; }
.hero .wrap { text-align: center; }
.hero h1 { font-size: 2.75rem; line-height: 1.5; margin-bottom: 20px; }
.hero .lead { font-size: 1.05rem; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-top: 32px; }
.tiles { display: grid; grid-template-columns: repeat(3, 72px); gap: 12px; justify-content: center; }
.tiles span {
  width: 72px; height: 72px; border-radius: 20px; border: 0; padding: 0;
  display: grid; place-items: center; font: inherit; font-size: 1.75rem; font-weight: 400;
  background: var(--empty);
  transition: background-color .18s ease, color .18s ease, transform .12s ease;
  -webkit-tap-highlight-color: transparent;
}


/* ゲームの紹介カード（トップ） */
.feature-game {
  display: grid; grid-template-columns: 1fr 280px; gap: 40px; align-items: center;
  background: var(--card); border-radius: 36px; padding: 48px 56px 0; overflow: hidden;
  text-decoration: none; color: inherit;
}
.feature-game .info { padding-bottom: 48px; }
.feature-game .app { display: flex; gap: 20px; align-items: center; margin-bottom: 20px; }
.feature-game .app img { width: 88px; height: 88px; border-radius: 21px; box-shadow: 0 0 0 1px var(--line); }
.feature-game .name { font-size: 1.6rem; font-weight: 600; margin: 0; line-height: 1.3; }
.feature-game .en { color: var(--sub); font-size: .9rem; margin: 2px 0 0; }
.feature-game .desc { color: var(--ink2); margin: 0 0 20px; }
.feature-game .phone { align-self: end; height: 440px; overflow: hidden; border-radius: 34px 34px 0 0; box-shadow: 0 0 0 1px var(--line); background: var(--bg); }
.feature-game .phone img { width: 280px; border-radius: 0; transition: transform .3s ease; }
.feature-game:hover .phone img { transform: translateY(-6px); }
.more { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); font-weight: 600; font-size: .95rem; text-decoration: none; }
.more::after { content: "→"; transition: transform .15s; }
a:hover .more::after, .more:hover::after { transform: translateX(4px); }
.meta { display: flex; gap: 8px; flex-wrap: wrap; margin: 0 0 24px; padding: 0; list-style: none; }
.tag { display: inline-block; font-size: .76rem; color: var(--ink2); background: var(--surface); border-radius: 99px; padding: 3px 12px; line-height: 1.6; }
.tag.soon { color: var(--mint-ink); background: var(--mint); }

/* 大切にしていること */
.values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.value { background: var(--card); border-radius: 28px; padding: 32px 28px; }
.value .icon { display: grid; grid-template-columns: repeat(2, 14px); gap: 4px; margin-bottom: 20px; }
.value .icon i { width: 14px; height: 14px; border-radius: 4.5px; }
.value .icon i:not([class]) { background: var(--empty); }
.value h3 { font-size: 1.05rem; margin-bottom: 8px; }
.value p { margin: 0; font-size: .92rem; color: var(--ink2); }

/* ゲームのページ */
.app-hero { padding: 64px 0 8px; }
.app-hero .wrap { display: grid; grid-template-columns: auto 1fr; gap: 36px; align-items: center; }
.app-hero img.icon { width: 148px; height: 148px; border-radius: 34px; box-shadow: 0 0 0 1px var(--line); }
.app-hero .en { color: var(--sub); margin: 2px 0 14px; }
.app-hero .meta { margin-bottom: 0; }
.intro { font-size: 1.15rem; line-height: 2.1; text-align: center; margin: 0; }
.shots { display: flex; gap: 20px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 4px 32px 20px; margin: 0 auto; max-width: var(--wide); scrollbar-width: none; }
.shots::-webkit-scrollbar { display: none; }
.shots img { width: 232px; flex: none; border-radius: 26px; scroll-snap-align: center; box-shadow: 0 0 0 1px var(--line); }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature { background: var(--card); border-radius: 28px; padding: 30px 28px; }
.feature .num { width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; font-size: 1.3rem; margin-bottom: 18px; }
.feature h3 { font-size: 1.05rem; margin-bottom: 8px; }
.feature p { margin: 0; font-size: .92rem; color: var(--ink2); }
.rules { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.rules li { display: grid; grid-template-columns: 9em 1fr; gap: 16px; background: var(--card); border-radius: 20px; padding: 18px 24px; }
.rules li strong { font-weight: 600; }
.rules li span { color: var(--ink2); }
.faq { background: var(--card); border-radius: 20px; margin: 0 0 12px; }
.faq summary { cursor: pointer; padding: 18px 24px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; flex: none; width: 10px; height: 10px; border-right: 1.5px solid var(--sub); border-bottom: 1.5px solid var(--sub); transform: rotate(45deg) translateY(-3px); transition: transform .2s; }
.faq[open] summary::after { transform: rotate(-135deg) translateY(-3px); }
.faq p { margin: 0; padding: 0 24px 20px; color: var(--ink2); }
.support { text-align: center; background: var(--card); border-radius: 32px; padding: 48px 32px; }
.support p { color: var(--ink2); margin: 0 0 8px; }

/* ボタン */
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--ink); color: #FAF8F4; text-decoration: none; font-family: inherit;
  border-radius: 99px; padding: 12px 28px; font-size: .95rem; font-weight: 600; border: 0; cursor: pointer;
  transition: transform .12s ease, opacity .15s;
}
.button:hover { opacity: .9; }
.button:active { transform: scale(.97); }
.button.sub { background: var(--surface); color: var(--ink); }
.button.mint { background: var(--mint); color: var(--mint-ink); }
.button[aria-disabled="true"] { background: var(--surface); color: var(--sub); pointer-events: none; }
.links { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-top: 20px; }

/* 文書（プライバシーポリシー） */
.doc { background: var(--card); border-radius: 32px; padding: 48px 56px; }
.doc > p:first-child { margin-top: 0; }
.doc h2 { font-size: 1.1rem; margin: 44px 0 10px; padding-top: 8px; display: flex; gap: 12px; align-items: baseline; }
.doc h2 .n { flex: none; display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 9px; background: var(--surface); font-size: .85rem; color: var(--ink2); transform: translateY(-2px); }
.doc p, .doc li { color: #56555C; }
.doc ul { padding-left: 1.3em; }
.doc li { margin: 4px 0; }
.toc { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 24px; margin: 0 0 8px; padding: 22px 28px; background: var(--bg); border-radius: 20px; list-style: none; counter-reset: toc; font-size: .92rem; }
.toc li { counter-increment: toc; }
.toc li::before { content: counter(toc) "."; color: var(--sub); margin-right: 8px; }
.toc a { color: var(--ink); text-decoration: none; }
.toc a:hover { text-decoration: underline; }
.doc .date { text-align: right; color: var(--sub); font-size: .88rem; margin: 40px 0 0; }

/* 問い合わせフォーム */
.form-card { background: var(--card); border-radius: 32px; padding: 44px 48px; }
form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; }
form .field { margin: 0 0 24px; }
form label { display: block; font-size: .9rem; font-weight: 600; margin-bottom: 8px; }
form .req, form .opt { font-size: .7rem; font-weight: 600; margin-left: 8px; padding: 1px 8px; border-radius: 99px; vertical-align: 1px; }
form .req { color: var(--pink-ink); background: var(--pink); }
form .opt { color: var(--sub); background: var(--surface); }
form input[type=text], form input[type=email], form select, form textarea {
  width: 100%; font: inherit; color: var(--ink); background: var(--bg);
  border: 1.5px solid transparent; border-radius: 14px; padding: 13px 16px; outline: none;
  transition: border-color .15s, background .15s; -webkit-appearance: none; appearance: none;
}
form select { background-image: linear-gradient(45deg, transparent 50%, var(--sub) 50%), linear-gradient(135deg, var(--sub) 50%, transparent 50%); background-position: calc(100% - 22px) 50%, calc(100% - 16px) 50%; background-size: 6px 6px; background-repeat: no-repeat; padding-right: 44px; }
form input:focus, form select:focus, form textarea:focus { border-color: #B9C9DE; background-color: #fff; }
form textarea { min-height: 220px; resize: vertical; }
form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
form .submit { text-align: center; margin-top: 8px; }
form .submit .button { min-width: 240px; padding: 14px 28px; }
.errors { background: var(--red); border-radius: 18px; padding: 16px 22px; margin-bottom: 28px; }
.errors ul { margin: 0; padding-left: 1.2em; }
.note { color: var(--sub); font-size: .86rem; text-align: center; }
.done { text-align: center; }
.done .check { width: 64px; height: 64px; border-radius: 20px; margin: 0 auto 20px; display: grid; place-items: center; font-size: 1.6rem; }

/* 404 */
.notfound { text-align: center; padding: 96px 0 40px; }
.notfound .tiles { margin-bottom: 36px; }
.notfound .tiles span { cursor: default; }
.notfound .lead { margin: 14px 0 32px; }

/* スマホだけで改行する */
br.sp { display: none; }
@media (max-width: 620px) { br.sp { display: inline; } }

/* フッター */
footer.site { margin-top: 96px; background: var(--band); }
footer.site .wrap { padding-top: 48px; padding-bottom: 40px; text-align: center; }
footer.site .logo { font-size: .98rem; }
footer.site .tagline { color: var(--sub); font-size: .85rem; margin: 6px 0 24px; }
footer.site nav { display: flex; justify-content: center; gap: 8px 28px; flex-wrap: wrap; font-size: .88rem; }
footer.site nav a { color: var(--ink2); text-decoration: none; }
footer.site nav a:hover { color: var(--ink); text-decoration: underline; }
footer.site .copy { color: var(--sub); font-size: .78rem; margin: 28px 0 0; padding-top: 24px; border-top: 1px solid var(--line); letter-spacing: .06em; }

@media (max-width: 860px) {
  .feature-game { grid-template-columns: 1fr; padding: 36px 32px 0; gap: 8px; }
  .feature-game .info { padding-bottom: 8px; }
  .feature-game .phone { justify-self: center; }
  .feature-game .phone { height: 360px; }
  .feature-game .phone img { width: 240px; }
  .values, .features { grid-template-columns: 1fr; gap: 14px; }
  .value, .feature { padding: 26px 24px; display: grid; grid-template-columns: auto 1fr; gap: 0 20px; align-items: start; }
  .value .icon, .feature .num { grid-row: span 2; margin: 4px 0 0; }
}
@media (max-width: 620px) {
  .wrap { padding: 0 20px; }
  header.site .wrap { height: auto; flex-direction: column; align-items: flex-start; gap: 6px; padding-top: 14px; padding-bottom: 10px; }
  header.site nav { margin-left: -14px; overflow-x: auto; max-width: calc(100% + 28px); scrollbar-width: none; }
  header.site nav::-webkit-scrollbar { display: none; }
  .hero { padding-top: 40px; }
  .hero h1 { font-size: 2rem; }
  .hero .lead { font-size: 1rem; }
  .hero .lead br { display: none; }
      section.block { padding-top: 56px; }
  .feature-game { padding: 28px 22px 0; border-radius: 28px; }
  .feature-game .app img { width: 72px; height: 72px; border-radius: 17px; }
  .feature-game .name { font-size: 1.35rem; }
  .page-head { padding: 44px 0 28px; }
  h1 { font-size: 1.7rem; }
  .app-hero { padding-top: 40px; }
  .app-hero .wrap { grid-template-columns: 1fr; gap: 20px; justify-items: center; text-align: center; }
  .app-hero .meta { justify-content: center; }
  .app-hero img.icon { width: 112px; height: 112px; border-radius: 26px; }
  .intro { font-size: .94rem; letter-spacing: .01em; }
  .shots { padding: 4px 20px 16px; gap: 14px; }
  .shots img { width: 176px; border-radius: 20px; }
  .rules li { grid-template-columns: 1fr; gap: 2px; padding: 16px 20px; }
  .doc { padding: 32px 22px; border-radius: 26px; }
  .toc { grid-template-columns: 1fr; padding: 18px 20px; }
  .form-card { padding: 30px 22px; border-radius: 26px; }
  form .row { grid-template-columns: 1fr; }
  footer.site { margin-top: 72px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* ゲームのページの補足 */
.app-hero .links { margin-top: 22px; }
section.shots-block { padding-top: 48px; }
.app-hero .wrap { grid-template-columns: 1fr; justify-items: center; text-align: center; gap: 24px; }
.app-hero .meta, .app-hero .links { justify-content: center; }