/* 紹介ページ（ランディング）— アプリと同じ白基調＋空色アクセント */
:root {
  color-scheme: light;
  --bg: #ffffff;
  --surface-2: #f2f5f9;
  --line: #e4e9f0;
  --text: #16202f;
  --muted: #6b7789;
  --primary: #38c2f5;
  --primary-ink: #05334c;
  --link: #0b82b8;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(20, 32, 55, .10);
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.85 -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--link); }

/* ---------------- ヘッダー ---------------- */
.site-head {
  position: sticky; top: 0; z-index: 5; background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
  display: flex; align-items: center; gap: 10px; padding: 12px 20px;
}
.site-head .mark { width: 30px; height: 30px; border-radius: 9px; background: var(--primary); display: grid; place-items: center; flex: none; }
.site-head .mark svg { width: 18px; height: 18px; fill: none; stroke: var(--primary-ink); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.site-head .name { font-weight: 700; color: var(--text); text-decoration: none; white-space: nowrap; }
.site-head .btn { white-space: nowrap; padding: 9px 18px; }
.site-head .spacer { flex: 1; }

/* ---------------- 共通 ---------------- */
.wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }
section { padding: 56px 0; border-top: 1px solid var(--line); }
section:first-of-type { border-top: 0; }
h1 { font-size: 30px; line-height: 1.45; margin: 0 0 14px; letter-spacing: -.01em; }
h2 { font-size: 22px; margin: 0 0 8px; letter-spacing: -.01em; }
h3 { font-size: 16px; margin: 0 0 4px; }
.lead { color: var(--muted); font-size: 16px; margin: 0 0 26px; }
.section-lead { color: var(--muted); margin: 0 0 26px; }

.btn {
  display: inline-block; padding: 12px 22px; border-radius: 999px;
  background: var(--primary); color: var(--primary-ink);
  font-weight: 700; text-decoration: none; box-shadow: var(--shadow);
}
.btn.ghost { background: var(--surface-2); color: var(--text); box-shadow: none; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------------- ヒーロー ---------------- */
.hero { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; padding: 64px 0 56px; }
.hero .shots { display: flex; gap: 14px; justify-content: center; }
.hero .shots img {
  width: 168px; border-radius: 18px; border: 1px solid var(--line); box-shadow: var(--shadow);
}
.hero .shots img:last-child { margin-top: 28px; }
@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; gap: 28px; padding: 40px 0; }
  h1 { font-size: 24px; }
  h1 br { display: none; }   /* 狭い画面では成り行きで折り返す */
  .hero .shots img { width: 44%; }
  .hero .shots img:last-child { margin-top: 18px; }
}

/* ---------------- カードグリッド ---------------- */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.card { background: var(--surface-2); border-radius: var(--radius); padding: 20px 22px; }
.card p { margin: 0; font-size: 14px; color: var(--muted); line-height: 1.8; }

/* ---------------- 使い方の手順 ---------------- */
.steps { counter-reset: step; display: grid; gap: 18px; }
.step { display: grid; grid-template-columns: 34px 1fr; gap: 14px; align-items: start; }
.step::before {
  counter-increment: step; content: counter(step);
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--primary); color: var(--primary-ink);
  display: grid; place-items: center; font-weight: 700; font-size: 15px;
}
.step p { margin: 2px 0 0; font-size: 14px; color: var(--muted); }

/* ---------------- 画面紹介 ---------------- */
.screens { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 28px; }
.screen img { border-radius: 18px; border: 1px solid var(--line); box-shadow: var(--shadow); margin: 0 auto 14px; width: 220px; }
.screen h3 { text-align: center; }
.screen p { margin: 0; font-size: 14px; color: var(--muted); text-align: center; }

/* ---------------- FAQ ---------------- */
.faq details { border-bottom: 1px solid var(--line); padding: 14px 0; }
.faq summary { cursor: pointer; font-weight: 700; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "＋ "; color: var(--link); }
.faq details[open] summary::before { content: "− "; }
.faq p { margin: 10px 0 0; font-size: 14px; color: var(--muted); }

/* ---------------- 表 ---------------- */
.table-scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; vertical-align: top; }
th { background: var(--surface-2); white-space: nowrap; }


/* ---------------- フッター ---------------- */
.site-foot { border-top: 1px solid var(--line); padding: 28px 20px 48px; text-align: center; font-size: 13px; color: var(--muted); }
.site-foot nav { margin-bottom: 10px; }
.site-foot nav a { margin: 0 10px; white-space: nowrap; }

/* ---------------- ストアのバッジ ---------------- */
.store-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 14px; }
.store-btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 9px 18px 9px 15px; border-radius: 10px;
  background: #16202f; color: #ffffff; text-decoration: none;
  border: 1px solid #16202f; transition: opacity .15s;
}
.store-btn:hover { opacity: .85; }
.store-btn svg { width: 24px; height: 24px; flex: none; fill: currentColor; }
.store-btn span { display: flex; flex-direction: column; line-height: 1.2; font-weight: 700; font-size: 16px; }
.store-btn small { font-weight: 400; font-size: 10px; opacity: .8; letter-spacing: .02em; }

.head-link { color: var(--text); text-decoration: none; font-size: 14px; font-weight: 700; margin-right: 4px; }
@media (max-width: 520px) {
  .head-link { display: none; }
  .store-btn { flex: 1 1 100%; justify-content: center; }
}