:root {
  --indigo: #3B3D8C;
  --indigo-2: #2C2E70;
  --accent: #F0965A;
  --ink: #1a1a24;
  --muted: #5a5a68;
  --bg: #ffffff;
  --card: #f6f6f9;
  --border: #e6e6ee;
  --on-indigo: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --indigo: #8E91E8;
    --ink: #f2f2f7;
    --muted: #a0a0ad;
    --bg: #0e0e12;
    --card: #1c1c22;
    --border: #2a2a33;
    --on-indigo: #0e0e12;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
a { color: var(--indigo); }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 24px; }

/* Nav */
nav { display: flex; align-items: center; justify-content: space-between; padding: 20px 0; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 700; font-size: 18px; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
nav ul { display: flex; gap: 20px; list-style: none; margin: 0; padding: 0; }
nav ul a { color: var(--muted); text-decoration: none; font-size: 15px; }
nav ul a:hover { color: var(--ink); }

/* Hero */
.hero { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center; padding: 56px 0 72px; }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: 0.4px; text-transform: uppercase; color: var(--indigo); margin-bottom: 14px; }
h1 { font-size: 48px; line-height: 1.1; letter-spacing: -1.2px; margin: 0 0 18px; text-wrap: balance; }
.lead { font-size: 19px; color: var(--muted); margin: 0 0 28px; max-width: 34em; }
.cta { display: inline-flex; align-items: center; gap: 10px; background: var(--indigo); color: var(--on-indigo); text-decoration: none; padding: 14px 24px; border-radius: 12px; font-weight: 600; font-size: 17px; }
.cta:hover { filter: brightness(1.08); }
.cta-note { display: block; margin-top: 12px; font-size: 14px; color: var(--muted); }

/* Phone frame around the app screenshot */
.phone {
  width: 260px; margin: 0 auto; border-radius: 44px; padding: 12px;
  background: #111118; box-shadow: 0 30px 60px -20px rgba(44, 46, 112, 0.45);
}
.phone img { display: block; width: 100%; height: auto; border-radius: 32px; }
@media (prefers-color-scheme: dark) {
  .phone { background: #1b1b24; box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.12), 0 30px 60px -20px rgba(142, 145, 232, 0.25); }
}

/* Facts strip */
.facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; }
.fact { background: var(--bg); padding: 22px 20px; }
.fact strong { display: block; font-size: 17px; margin-bottom: 4px; }
.fact span { color: var(--muted); font-size: 14px; }

section { padding: 72px 0 0; }
h2 { font-size: 32px; letter-spacing: -0.6px; margin: 0 0 12px; }
.section-lead { color: var(--muted); font-size: 17px; margin: 0 0 32px; max-width: 40em; }

/* How it works */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; counter-reset: step; }
.step { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 24px; }
.step::before { counter-increment: step; content: counter(step); display: inline-flex; width: 30px; height: 30px; border-radius: 50%; background: var(--indigo); color: var(--on-indigo); align-items: center; justify-content: center; font-weight: 700; font-size: 15px; margin-bottom: 14px; }
.step h3 { margin: 0 0 6px; font-size: 18px; }
.step p { margin: 0; color: var(--muted); font-size: 15px; }

/* Features */
.features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 40px; list-style: none; margin: 0; padding: 0; }
.features li { padding: 16px 0; border-top: 1px solid var(--border); }
.features strong { display: block; font-size: 16px; }
.features span { color: var(--muted); font-size: 15px; }

/* Not-list */
.nots { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; padding: 0; margin: 0; }
.nots li { border: 1px solid var(--border); border-radius: 999px; padding: 8px 16px; font-size: 15px; }
.nots li::before { content: "✕"; color: var(--accent); font-weight: 700; margin-right: 8px; }

/* Pricing */
.pricing { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.plan { border: 1px solid var(--border); border-radius: 16px; padding: 28px; }
.plan.premium { border-color: var(--indigo); box-shadow: 0 0 0 1px var(--indigo) inset; }
.plan h3 { margin: 0 0 4px; font-size: 20px; }
.plan .price { font-size: 15px; color: var(--muted); margin: 0 0 16px; }
.plan ul { margin: 0; padding-left: 20px; }
.plan li { margin: 6px 0; font-size: 15px; }

/* FAQ */
.faq details { border-top: 1px solid var(--border); padding: 18px 0; }
.faq details:last-child { border-bottom: 1px solid var(--border); }
.faq summary { cursor: pointer; font-weight: 600; font-size: 17px; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--muted); font-weight: 400; font-size: 22px; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq p { margin: 10px 0 0; color: var(--muted); max-width: 44em; }

/* Bottom CTA */
.final { margin: 80px 0 0; text-align: center; background: var(--card); border: 1px solid var(--border); border-radius: 20px; padding: 48px 24px; }
.final img { width: 72px; height: 72px; border-radius: 16px; }
.final h2 { margin-top: 16px; }

footer { margin-top: 64px; padding: 28px 0 48px; border-top: 1px solid var(--border); color: var(--muted); font-size: 13px; }
footer p { margin: 4px 0; }
footer a { color: var(--muted); }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding-top: 32px; gap: 40px; }
  h1 { font-size: 36px; letter-spacing: -0.8px; }
  .facts { grid-template-columns: repeat(2, 1fr); }
  .steps, .features, .pricing { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .wrap { padding: 0 16px; }
  nav ul { gap: 14px; }
  nav ul li.hide-sm { display: none; }
  h1 { font-size: 31px; }
  .lead { font-size: 17px; }
  h2 { font-size: 26px; }
  .phone { width: 230px; border-radius: 40px; padding: 10px; }
  .phone img { border-radius: 30px; }
}

/* Language menu */
.lang-menu details { position: relative; }
.lang-menu summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; gap: 6px;
  padding: 5px 8px; border-radius: 8px; border: 1px solid var(--border);
}
.lang-menu summary::-webkit-details-marker { display: none; }
.lang-menu summary:hover, .lang-menu details[open] summary { background: var(--card); }
.lang-menu img { display: block; width: 24px; height: 16px; border-radius: 3px; object-fit: cover; box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.12); }
.lang-menu .caret { width: 0; height: 0; border-left: 4px solid transparent; border-right: 4px solid transparent; border-top: 5px solid var(--muted); transition: transform 0.15s; }
.lang-menu details[open] .caret { transform: rotate(180deg); }
.lang-list {
  position: absolute; right: 0; top: calc(100% + 6px); z-index: 10; min-width: 150px; padding: 6px;
  background: var(--bg); border: 1px solid var(--border); border-radius: 12px;
  box-shadow: 0 12px 30px -10px rgba(0, 0, 0, 0.25);
}
nav .lang-list a { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 8px; color: var(--ink); font-size: 15px; }
nav .lang-list a:hover { background: var(--card); }

/* Per-language typography */
:lang(ja) body, body:lang(ja) {
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  line-break: strict;
}
:lang(ja) h1, :lang(ja) h2 { letter-spacing: 0; word-break: auto-phrase; }
:lang(ja) h1 { line-height: 1.25; }
:lang(ja) .eyebrow { text-transform: none; letter-spacing: 0.1em; }