/* Futari & Co. の HP 共通のスタイル
   レイアウト: 1カラム（最大 1040px）。トップ → アプリ → 大切にしていること → つくっている人 → お問い合わせ */
:root {
  --bg: #FBF6EE;          /* 生成りの紙 */
  --surface: #FFFFFF;
  --ink: #3E3027;         /* こげ茶 */
  --sub: #7D6E61;
  --line: #E8DFD2;
  --sora: #6E9BD3;
  --beni: #E3786A;
  --kasane: #7A5A8C;
  --link: #B5533F;
  --chip-live-bg: #E4EEDF; --chip-live-fg: #3F6A3A;
  --chip-soon-bg: #F1EBE2; --chip-soon-fg: #7D6E61;
  --f-display: "Zen Maru Gothic", "Hiragino Maru Gothic ProN", "Hiragino Sans", sans-serif;
  --f-body: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1E1916; --surface: #28221E; --ink: #F0E8DE; --sub: #AC9F92; --line: #3B332D; --link: #EE9384;
    --chip-live-bg: #2D3A2A; --chip-live-fg: #A9D19F; --chip-soon-bg: #352E29; --chip-soon-fg: #C2B6A9;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #1E1916; --surface: #28221E; --ink: #F0E8DE; --sub: #AC9F92; --line: #3B332D; --link: #EE9384;
  --chip-live-bg: #2D3A2A; --chip-live-fg: #A9D19F; --chip-soon-bg: #352E29; --chip-soon-fg: #C2B6A9;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--f-body); font-size: 16px; line-height: 1.85; }
img { max-width: 100%; }
a { color: var(--link); text-underline-offset: .2em; }
a:focus-visible { outline: 2px solid var(--sora); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3 { font-family: var(--f-display); font-weight: 700; line-height: 1.4; text-wrap: balance; word-break: auto-phrase; margin: 0; }
p { margin: 0; }

.wrap { max-width: 1040px; margin: 0 auto; padding-inline: 20px; }

/* ヘッダー */
.site-head { padding-block: 22px; }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px 24px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; }
.brand img { width: 44px; height: auto; }
.brand span { font-family: var(--f-display); font-weight: 700; font-size: 1.3rem; letter-spacing: .01em; white-space: nowrap; }
.brand small { font-family: var(--f-body); font-weight: 400; font-size: .78rem; color: var(--sub); margin-left: .35em; }
.site-nav { display: flex; gap: 6px 20px; flex-wrap: wrap; font-size: .92rem; }
.site-nav a { color: var(--ink); text-decoration: none; }
.site-nav a:hover { color: var(--link); }

/* トップの見出し */
.hero { padding-block: 40px 64px; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 32px; align-items: center; }
.hero h1 { font-size: clamp(1.9rem, 4.6vw, 3rem); letter-spacing: .02em; }
.hero p { margin-top: 18px; max-width: 30em; color: var(--ink); }
.hero-art { position: relative; aspect-ratio: 1 / .8; max-width: 100%; isolation: isolate; }
.hero-art .disc { position: absolute; border-radius: 50%; width: 62%; aspect-ratio: 1; top: 0; }
.hero-art .d1 { left: 4%; background: var(--sora); }
.hero-art .d2 { right: 4%; background: var(--beni); mix-blend-mode: multiply; }  /* 重なったところが「かさね」の色になる */
.hero-art .icons { position: absolute; inset: auto 0 0 0; display: flex; justify-content: center; gap: 12px; }
.hero-art .icons img { width: 22%; max-width: 76px; border-radius: 22.5%; box-shadow: 0 6px 16px rgba(40, 25, 15, .18); }

/* セクション */
.section { padding-block: 56px; border-top: 1px solid var(--line); }
.section h2 { font-size: 1.55rem; }
.section .lead { margin-top: 8px; color: var(--sub); max-width: 40em; }
.section-body { margin-top: 28px; }

/* アプリのカード */
.apps { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 440px), 1fr)); gap: 20px; }
.apps-3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
.app-card { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 22px; display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 4px 18px; align-content: start; }
.app-card > img { width: 76px; height: 76px; border-radius: 22.5%; box-shadow: 0 0 0 1px rgba(0, 0, 0, .06), 0 4px 10px rgba(40, 25, 15, .10); grid-row: span 2; }
.app-card .name { display: flex; align-items: center; gap: 4px 10px; flex-wrap: wrap; }
.app-card h3 { font-size: 1.2rem; }
.app-card .catch { font-family: var(--f-display); font-weight: 500; color: var(--sub); font-size: .95rem; }
.app-card .desc { grid-column: 1 / -1; margin-top: 12px; font-size: .95rem; }
.app-card .links { grid-column: 1 / -1; margin-top: 12px; display: flex; gap: 6px 18px; flex-wrap: wrap; font-size: .9rem; }
.chip { font-size: .72rem; font-weight: 700; letter-spacing: .04em; padding: 2px 10px; border-radius: 999px; white-space: nowrap; }
.chip.live { background: var(--chip-live-bg); color: var(--chip-live-fg); }
.chip.soon { background: var(--chip-soon-bg); color: var(--chip-soon-fg); }

/* 大切にしていること */
.values { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); gap: 28px; }
.value { display: grid; gap: 8px; align-content: start; }
.value .dot { width: 22px; height: 22px; border-radius: 50%; }
.value h3 { font-size: 1.08rem; }
.value p { font-size: .95rem; }

/* つくっている人・お問い合わせ */
.about { display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; max-width: 40em; }
.contact-box { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; }
.contact-box .mail { font-family: var(--f-display); font-weight: 700; font-size: 1.1rem; user-select: all; overflow-wrap: anywhere; }
.contact-box button { font: inherit; font-size: .85rem; border: 1px solid var(--line); background: var(--bg); color: var(--ink); border-radius: 8px; padding: 4px 12px; cursor: pointer; }
.contact-box button:focus-visible { outline: 2px solid var(--sora); outline-offset: 2px; }

/* フッター */
.site-foot { padding-block: 32px 48px; border-top: 1px solid var(--line); color: var(--sub); font-size: .85rem; }
.site-foot .wrap { display: flex; justify-content: space-between; gap: 8px 24px; flex-wrap: wrap; }
.site-foot a { color: var(--sub); }

/* 規約・サポートのページ */
.doc { padding-block: 24px 72px; }
.doc .wrap { max-width: 760px; }
.doc .crumb { font-size: .85rem; color: var(--sub); }
.doc .crumb a { color: var(--sub); }
.doc-head { display: flex; align-items: center; gap: 16px; margin-top: 18px; }
.doc-head img { width: 64px; height: 64px; border-radius: 22.5%; box-shadow: 0 0 0 1px rgba(0, 0, 0, .06); flex: none; }
.doc h1 { font-size: clamp(1.5rem, 3.6vw, 2rem); }
.doc .meta { color: var(--sub); font-size: .85rem; }
.doc .draft { margin-top: 18px; background: var(--surface); border: 1px dashed var(--beni); border-radius: 10px; padding: 10px 14px; font-size: .88rem; }
.doc h2 { font-size: 1.2rem; margin-top: 40px; padding-top: 4px; }
.doc h3 { font-size: 1.02rem; margin-top: 24px; }
.doc p, .doc ul, .doc ol, .doc table { margin-top: 12px; }
.doc ul, .doc ol { padding-left: 1.4em; }
.doc li + li { margin-top: 4px; }
.table-wrap { overflow-x: auto; margin-top: 12px; }
.doc table { border-collapse: collapse; width: 100%; font-size: .93rem; margin-top: 0; }
.doc th, .doc td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.doc th { font-weight: 700; white-space: nowrap; }
.doc td:first-child { white-space: nowrap; font-weight: 700; }

@media (max-width: 720px) {
  .hero .wrap { grid-template-columns: minmax(0, 1fr); }
  .hero { padding-block: 16px 48px; }
  .hero-art { max-width: 360px; width: 100%; margin-inline: auto; }
  .section { padding-block: 44px; }
}
@media (prefers-reduced-motion: no-preference) {
  .hero-art .disc { transition: transform .6s ease; }
  .hero-art:hover .d1 { transform: translateX(4%); }
  .hero-art:hover .d2 { transform: translateX(-4%); }
}