:root {
  --bg: #0b0d18;
  --bg2: #12142a;
  --surface: #171a2f;
  --text: #f2f3fb;
  --dim: rgba(242, 243, 251, 0.68);
  --line: rgba(242, 243, 251, 0.12);
  --brand: #ff6b4a;
  --gold: #f0b849;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.8;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}
a { color: var(--brand); }
img { max-width: 100%; height: auto; display: block; }

.wrap { max-width: 980px; margin: 0 auto; padding: 0 22px; }

/* ヘッダー */
.top {
  position: sticky; top: 0; z-index: 5;
  background: rgba(11, 13, 24, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.top .wrap { display: flex; align-items: center; gap: 12px; height: 58px; }
.top .logo { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: .01em; color: var(--text); text-decoration: none; }
.top .logo img { width: 30px; height: 30px; border-radius: 8px; }
.top nav { margin-left: auto; display: flex; gap: 18px; font-size: 14px; }
.top nav a { color: var(--dim); text-decoration: none; }
.top nav a:hover { color: var(--text); }
.top .store { margin-left: 8px; }

/* ボタン */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px; border-radius: 999px;
  background: var(--brand); color: #fff; font-weight: 700; text-decoration: none;
  font-size: 15px; line-height: 1;
  box-shadow: 0 8px 28px rgba(255, 107, 74, 0.32);
}
.btn.small { padding: 9px 14px; font-size: 13px; box-shadow: none; }
.btn svg { width: 16px; height: 16px; }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); box-shadow: none; }

/* ヒーロー */
.hero { padding: 72px 0 40px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -40% -20% auto -20%; height: 120%;
  background: radial-gradient(60% 50% at 30% 30%, rgba(255, 107, 74, 0.22), transparent 70%),
              radial-gradient(40% 40% at 80% 20%, rgba(240, 184, 73, 0.14), transparent 70%);
  pointer-events: none;
}
.hero .wrap { position: relative; display: grid; grid-template-columns: 1.15fr 1fr; gap: 40px; align-items: center; }
.hero .icon { width: 72px; height: 72px; border-radius: 18px; box-shadow: 0 10px 30px rgba(0,0,0,.45); margin-bottom: 22px; }
.hero h1 { font-size: 44px; line-height: 1.25; margin: 0 0 16px; letter-spacing: -.01em; }
.hero h1 em { font-style: normal; color: var(--brand); }
.hero .lead { color: var(--dim); font-size: 17px; margin: 0 0 28px; max-width: 460px; }
.hero .cta { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.hero .cta .note { color: var(--dim); font-size: 13px; }
.hero .shots { display: flex; justify-content: center; align-items: flex-end; gap: 14px; }
.hero .shots img { width: 46%; border-radius: 26px; box-shadow: 0 24px 60px rgba(0,0,0,.55); border: 1px solid var(--line); }
.hero .shots img.back { width: 40%; opacity: .92; transform: translateY(18px); }

/* 帯 */
.strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg2); }
.strip .wrap { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; padding: 22px 22px; }
.strip .k { color: var(--dim); font-size: 12.5px; }
.strip .v { font-size: 20px; font-weight: 800; }
.strip .v span { color: var(--brand); }

/* セクション */
section { padding: 72px 0; }
section.alt { background: var(--bg2); }
h2 { font-size: 30px; line-height: 1.35; margin: 0 0 12px; letter-spacing: -.01em; }
.sub { color: var(--dim); margin: 0 0 34px; max-width: 620px; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step {
  background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 24px 22px;
}
.step .n { display: inline-flex; width: 30px; height: 30px; border-radius: 50%; background: var(--brand); color: #fff; font-weight: 800; align-items: center; justify-content: center; font-size: 14px; margin-bottom: 14px; }
.step h3 { margin: 0 0 8px; font-size: 18px; }
.step p { margin: 0; color: var(--dim); font-size: 14.5px; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; }
.split img { width: 78%; margin: 0 auto; border-radius: 26px; border: 1px solid var(--line); box-shadow: 0 24px 60px rgba(0,0,0,.5); }
.split p { color: var(--dim); }
.split p strong { color: var(--text); }

.promises { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.promise { display: flex; gap: 14px; background: var(--surface); border: 1px solid var(--line); border-radius: 18px; padding: 20px; }
.promise .ic { flex: 0 0 40px; width: 40px; height: 40px; border-radius: 12px; background: rgba(255,107,74,.14); display: flex; align-items: center; justify-content: center; }
.promise .ic svg { width: 20px; height: 20px; fill: none; stroke: var(--brand); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.promise h3 { margin: 0 0 4px; font-size: 16px; }
.promise p { margin: 0; color: var(--dim); font-size: 14px; }

.faq details { border-bottom: 1px solid var(--line); padding: 14px 0; }
.faq summary { cursor: pointer; font-weight: 700; font-size: 16px; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--brand); font-size: 20px; }
.faq details[open] summary::after { content: "−"; }
.faq details p { margin: 8px 0 0; color: var(--dim); font-size: 14.5px; }

.cta-end { text-align: center; padding: 80px 0; }
.cta-end h2 { margin-bottom: 8px; }
.cta-end .sub { margin: 0 auto 26px; }

footer { border-top: 1px solid var(--line); padding: 30px 0 48px; color: var(--dim); font-size: 13px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 22px; align-items: center; }
footer a { color: var(--dim); text-decoration: none; }
footer a:hover { color: var(--text); }
footer .copy { margin-left: auto; }

@media (max-width: 820px) {
  .hero { padding: 44px 0 30px; }
  .hero .wrap { grid-template-columns: 1fr; gap: 34px; }
  /* 「すれ違った人とだけ、」が1行に収まる大きさ（10文字 × 30px ＋ 余白 < 375px） */
  .hero h1 { font-size: 30px; letter-spacing: -.02em; }
  .hero .shots img { width: 52%; }
  .hero .shots img.back { width: 44%; }
  .strip .wrap { grid-template-columns: 1fr; gap: 10px; }
  .steps, .promises, .split { grid-template-columns: 1fr; }
  .split img { width: 70%; }
  .split.rev { display: flex; flex-direction: column-reverse; }
  section { padding: 52px 0; }
  h2 { font-size: 25px; }
  .top nav { display: none; }
}