:root {
  /* marketing (App Store screenshots) */
  --purple: #6c4fd6;
  --purple-deep: #4f37b3;
  --purple-soft: #8a72e6;
  /* app world (icon / in-app) */
  --cream: #fbf6ec;
  --cream-2: #fff9ef;
  --orange: #f0883c;
  --coral: #dd6a4d;
  --gold: #f3c44a;
  --mint: #9fe0c8;
  --ink: #41372a;
  --muted: #7c7060;
  --faint: #a59a86;
  --line: #e7dfce;
  --radius: 18px;
  --sans: -apple-system, BlinkMacSystemFont, "Hiragino Sans",
    "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.85;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--coral); text-underline-offset: 2px; }
img { display: block; max-width: 100%; }
.wrap { width: 100%; max-width: 1000px; margin: 0 auto; padding: 0 22px; }

/* ---------- top breadcrumb ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: rgba(79, 55, 179, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,.12);
}
.topbar .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 54px;
}
.topbar a { color: rgba(255,255,255,.9); font-size: 14px; text-decoration: none; }
.topbar a:hover { color: #fff; }
.topbar .home { font-weight: 600; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(120% 80% at 50% -10%, var(--purple-soft) 0%, var(--purple) 42%, var(--purple-deep) 100%);
  color: #fff;
  text-align: center;
  padding: 72px 0 88px;
}
/* faint 3x3 grid motif echoing the app icon */
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(70% 60% at 50% 30%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(70% 60% at 50% 30%, #000 0%, transparent 75%);
  pointer-events: none;
}
.hero > .wrap { position: relative; z-index: 1; }
.app-icon {
  width: 116px; height: 116px;
  border-radius: 26px;
  box-shadow: 0 18px 40px -12px rgba(0,0,0,.45);
  margin: 0 auto 22px;
}
.hero .eyebrow {
  font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase;
  color: rgba(255,255,255,.78); margin: 0 0 10px;
}
.hero h1 {
  font-size: clamp(40px, 9vw, 64px);
  margin: 0; letter-spacing: 0.04em; font-weight: 800;
}
.hero .tagline {
  font-size: clamp(20px, 4.4vw, 27px);
  font-weight: 800;
  line-height: 1.55;
  margin: 20px auto 0; max-width: 18em;
}
/* playful marker highlight */
.hl {
  font-weight: 800;
  background: linear-gradient(transparent 58%, var(--gold) 58%, var(--gold) 92%, transparent 92%);
  padding: 0 .12em;
  border-radius: 2px;
  white-space: nowrap;
}
.about .hl { white-space: normal; }
/* tilted sticker badge */
.sticker {
  position: absolute;
  top: 64px; right: max(24px, calc(50% - 280px));
  transform: rotate(9deg);
  background: var(--coral);
  color: #fff;
  font-weight: 800;
  font-size: 15px;
  padding: 10px 16px;
  border-radius: 999px;
  box-shadow: 0 8px 20px -8px rgba(0,0,0,.5);
  z-index: 2;
}
.hero .sub {
  color: rgba(255,255,255,.82);
  margin: 14px auto 0; max-width: 30em; font-size: 15.5px;
}
.cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 32px; }
.btn {
  display: inline-block; font-weight: 700; font-size: 15px;
  padding: 13px 26px; border-radius: 999px; text-decoration: none;
  transition: transform .18s, box-shadow .18s, background .18s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--gold); color: #4a3a10;
  box-shadow: 0 10px 24px -10px rgba(243,196,74,.8);
}
.btn-ghost {
  background: rgba(255,255,255,.12); color: #fff;
  border: 1px solid rgba(255,255,255,.35);
}
.btn-ghost:hover { background: rgba(255,255,255,.2); }
.btn-appstore {
  display: inline-flex; align-items: center; gap: 9px;
  background: #000; color: #fff;
  box-shadow: 0 10px 24px -10px rgba(0,0,0,.6);
}
.btn-appstore:hover { background: #1a1a1a; }
.btn-appstore .apple { width: 17px; height: 17px; margin-top: -2px; }

/* ---------- generic section ---------- */
.section { padding: 72px 0; }
.section.alt { background: var(--cream-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-title {
  text-align: center; font-size: clamp(24px, 5vw, 30px);
  margin: 0 0 12px; letter-spacing: 0.02em;
}
.section-lead {
  text-align: center; color: var(--muted);
  max-width: 30em; margin: 0 auto 44px;
}

/* ---------- about narrative ---------- */
.about p { max-width: 34em; margin: 0 auto 16px; color: #54493a; }
.about p:last-child { margin-bottom: 0; }

/* ---------- feature cards ---------- */
.features {
  display: grid; gap: 18px;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 8px;
}
.feature {
  position: relative;
  background: var(--cream-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 22px 26px;
  text-align: center;
  overflow: hidden;
  transition: transform .18s, box-shadow .18s;
}
.feature:hover { transform: translateY(-4px); box-shadow: 0 16px 32px -20px rgba(79,55,179,.5); }
.feature .step {
  position: absolute;
  top: 8px; left: 14px;
  font-size: 50px;
  font-weight: 800;
  font-style: italic;
  line-height: 1;
  color: rgba(108, 79, 214, 0.10);
  letter-spacing: -0.04em;
}
.feature .ic {
  width: 56px; height: 56px; border-radius: 16px;
  display: grid; place-items: center;
  margin: 0 auto 16px; font-size: 26px;
}
.feature h3 { margin: 0 0 8px; font-size: 18px; }
.feature p { margin: 0; color: var(--muted); font-size: 14.5px; }

/* ---------- screenshot gallery ---------- */
.gallery {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-start;
  gap: 22px;
  max-width: 920px;
  margin: 0 auto;
  padding: 6px 22px 18px;
}
.shot {
  flex: 0 0 auto;
  width: 240px;
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 0 16px 40px -18px rgba(79,55,179,.55);
  transition: transform .2s;
}
.shot:hover { transform: translateY(-6px) rotate(-1deg); }
.shot img { width: 100%; height: auto; }

/* ---------- final CTA ---------- */
.cta-band {
  background: radial-gradient(120% 120% at 50% 0%, var(--purple-soft), var(--purple) 55%, var(--purple-deep));
  color: #fff; text-align: center; padding: 64px 0;
}
.cta-band h2 { margin: 0 0 12px; font-size: clamp(22px, 5vw, 28px); }
.cta-band p { color: rgba(255,255,255,.85); margin: 0 auto 26px; max-width: 26em; }
.cta-band .mail { font-weight: 700; font-size: 17px; }
.cta-band .mail a { color: var(--gold); }

/* ---------- footer ---------- */
.site-footer {
  background: var(--purple-deep); color: rgba(255,255,255,.7);
  padding: 28px 0; text-align: center; font-size: 13px;
}
.site-footer a { color: rgba(255,255,255,.85); }
.site-footer .links { margin: 0 0 8px; display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; }

@media (max-width: 720px) {
  .features { grid-template-columns: 1fr; max-width: 380px; margin-left: auto; margin-right: auto; }
  .section { padding: 56px 0; }
}

@media (max-width: 480px) {
  .hero { padding: 60px 0 72px; }
  .hero .cta { flex-direction: column; align-items: stretch; }
  .hero .cta .btn { justify-content: center; }
  .sticker { top: 52px; right: 18px; font-size: 13px; padding: 8px 13px; }
}