:root {
  color-scheme: dark;
  --bg-0: #0a0410;
  --bg-1: #1a0a24;
  --bg-2: #2c1140;
  --bg-3: #2a1038;
  --panel: #3a1a4e;
  --panel-soft: rgba(58, 26, 78, .62);
  --panel-deep: rgba(24, 8, 34, .82);
  --pink: #fa3f73;
  --pink-2: #ff77a8;
  --cyan: #b06bff;
  --violet: #7a3ffa;
  --text: #f8f9ff;
  --muted: #c4b2d0;
  --muted-2: #97869f;
  --line: rgba(255,255,255,.12);
  --shadow: 0 30px 80px rgba(0,0,0,.35);
  --radius: 28px;
  --max: 1160px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Hiragino Sans", "Yu Gothic", "YuGothic", "Noto Sans JP", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 78% 8%, rgba(250,63,115,.16), transparent 28rem),
    radial-gradient(circle at 10% 36%, rgba(122,63,250,.14), transparent 25rem),
    linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 25%, #24103a 64%, #150826 100%);
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .18;
  background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.65), transparent 75%);
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input { font: inherit; }
.skip-link {
  position: absolute; left: 12px; top: -100px; z-index: 999;
  padding: 10px 14px; border-radius: 12px; background: #fff; color: #111;
}
.skip-link:focus { top: 12px; }
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(18px) saturate(130%);
  background: rgba(10,4,16,.68);
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.nav {
  max-width: var(--max); margin: 0 auto; min-height: 92px; padding: 0 24px;
  display: flex; align-items: center; gap: 28px;
}
.brand { display: inline-flex; align-items: center; gap: 14px; font-size: 28px; font-weight: 780; letter-spacing: -.035em; white-space: nowrap; }
.brand img { width: 54px; height: 54px; object-fit: contain; }
.nav-links { margin-left: auto; display: flex; gap: 24px; align-items: center; color: var(--muted); font-size: 14px; }
.nav-links a { transition: color .2s ease; }
.nav-links a:hover { color: var(--text); }
.button {
  display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 20px;
  border-radius: 999px; border: 1px solid rgba(255,255,255,.12); font-weight: 700; letter-spacing: -.01em;
  transition: transform .18s ease, box-shadow .18s ease, opacity .18s ease, background .18s ease;
}
.button:hover { transform: translateY(-1px); }
.button-primary {
  color: white; border-color: rgba(255,255,255,.06);
  background: linear-gradient(135deg, #ff2d66, #e61fc6 56%, #7148ff);
  box-shadow: 0 14px 32px rgba(250,63,115,.23);
}
.button-secondary { background: rgba(255,255,255,.07); }
.button.is-disabled { opacity: .62; cursor: default; box-shadow: none; }
.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.section { padding: 104px 0; position: relative; }
.section-tight { padding: 70px 0; }
.eyebrow {
  display: inline-flex; gap: 8px; align-items: center; font-size: 13px; font-weight: 800;
  letter-spacing: .12em; text-transform: uppercase; color: var(--pink-2);
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: currentColor; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 24px; max-width: 760px; font-size: clamp(44px, 6vw, 72px); line-height: 1.3; letter-spacing: -.055em; }
.hero-title-line { white-space: nowrap; }
h2 { margin-bottom: 18px; font-size: clamp(34px, 4.5vw, 54px); line-height: 1.3; letter-spacing: -.045em; }
h3 { font-size: 22px; letter-spacing: -.03em; }
.lead { max-width: 660px; font-size: clamp(18px, 2vw, 23px); line-height: 1.7; color: #d8dcef; }
.hero-lead { max-width: none; font-size: clamp(17px, 1.55vw, 20px); line-height: 1.65; }
.hero-lead span { display: block; white-space: nowrap; }
.section-intro { max-width: 720px; margin-bottom: 48px; }
.section-intro p { color: var(--muted); font-size: 17px; line-height: 1.8; }
.hero { padding: 84px 0 80px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.16fr) minmax(330px, .84fr); gap: 56px; align-items: center; }
.hero-copy { position: relative; z-index: 2; }
.hero-logo-row { display: inline-flex; align-items: center; gap: 13px; margin-bottom: 30px; color: #c7ccde; font-weight: 680; }
.hero-logo-row img { width: 58px; height: 58px; object-fit: contain; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.trust-row { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 22px; font-size: 13px; color: #b6bdd4; }
.trust-row span { display: inline-flex; align-items: center; gap: 7px; }
.trust-row span::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--pink); box-shadow: 0 0 12px rgba(250,63,115,.9); }
.pro-note { margin: 9px 0 0; font-size: 12px; line-height: 1.5; color: #7f89a6; }
.hero-visual { position: relative; min-height: 720px; display: grid; place-items: center; }
.hero-visual::before {
  content: ""; position: absolute; width: 500px; height: 500px; border-radius: 50%;
  background: radial-gradient(circle, rgba(250,63,115,.17), rgba(92,61,255,.07) 48%, transparent 68%); filter: blur(18px);
}
.phone-shell {
  width: min(470px, 100%); position: relative; padding: 7px; border-radius: 48px;
  background: linear-gradient(145deg, rgba(255,255,255,.22), rgba(255,255,255,.04));
  box-shadow: 0 35px 80px rgba(0,0,0,.52), 0 0 80px rgba(250,63,115,.1);
}
.phone-shell img { width: 100%; height: auto; aspect-ratio: 942 / 2048; object-fit: contain; border-radius: 42px; background: #050b20; }
.step-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.step-card { padding: 28px; min-height: 250px; }
.step-number {
  width: 42px; height: 42px; border-radius: 14px; display: grid; place-items: center; margin-bottom: 50px; font-weight: 800;
  background: rgba(250,63,115,.12); color: var(--pink-2); border: 1px solid rgba(250,63,115,.3);
}
.step-card p, .feature-card p, .fact-card p { color: var(--muted); line-height: 1.75; margin-bottom: 0; }
.memory-band {
  overflow: hidden; border-top: 1px solid rgba(255,255,255,.07); border-bottom: 1px solid rgba(255,255,255,.07);
  background: linear-gradient(90deg, rgba(250,63,115,.05), rgba(67,81,166,.06), rgba(176,107,255,.05));
}
.fact-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 18px; }
.fact-card { padding: 24px 20px; text-align: left; background: rgba(255,255,255,.035); }
.fact-icon {
  width: 42px; height: 42px; border-radius: 14px; display: grid; place-items: center; color: var(--pink-2);
  background: rgba(250,63,115,.08); margin-bottom: 18px;
}
.fact-icon svg { width: 22px; height: 22px; }
.fact-card strong { display: block; font-size: 15px; line-height: 1.4; }
.micro-note { margin-top: 22px; color: var(--muted-2); font-size: 13px; line-height: 1.7; }
.screenshot-showcase { display: grid; grid-template-columns: .9fr 1.1fr; gap: 52px; align-items: start; }
.screenshot-copy { position: sticky; top: 118px; }
.screen-stack { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.screen-card { padding: 18px; display: grid; grid-template-columns: 1fr; gap: 18px; align-items: start; overflow: hidden; }
.screen-card img { width: min(290px, 100%); height: auto; margin: 0 auto; border-radius: 27px; box-shadow: 0 18px 34px rgba(0,0,0,.25); }
.screen-card p { color: var(--muted); line-height: 1.72; margin: 0; }
.screen-card .tag { color: var(--pink-2); font-size: 12px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 8px; }
.privacy-callout {
  display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; padding: 36px; border-radius: 34px;
  border: 1px solid rgba(255,255,255,.12);
  background: radial-gradient(circle at 90% 20%, rgba(176,107,255,.15), transparent 18rem), linear-gradient(135deg, rgba(25,39,80,.86), rgba(49,57,97,.7));
}
.privacy-callout p { color: var(--muted); max-width: 700px; line-height: 1.8; margin-bottom: 0; }
.privacy-callout h2 { margin-bottom: 14px; line-height: 1.3; }
.lock-orbit {
  width: 116px; height: 116px; border-radius: 50%; border: 1px solid rgba(255,255,255,.14); display: grid; place-items: center;
  position: relative; color: var(--pink-2); box-shadow: inset 0 0 50px rgba(250,63,115,.1);
}
.lock-orbit::before, .lock-orbit::after { content: ""; position: absolute; inset: 16px; border: 1px solid rgba(176,107,255,.22); border-radius: 50%; }
.lock-orbit::after { inset: 30px; border-color: rgba(250,63,115,.3); }
.lock-orbit svg { width: 32px; height: 32px; z-index: 2; }
.price-card {
  max-width: 900px; margin: 0 auto; padding: 42px; text-align: center;
  background: linear-gradient(180deg, rgba(49,57,97,.78), rgba(21,29,66,.82));
}
.price-card .big-label { font-size: clamp(36px, 5vw, 58px); font-weight: 800; letter-spacing: -.04em; }
.price-card p { max-width: 620px; margin: 18px auto 28px; color: var(--muted); line-height: 1.8; }
.faq { max-width: 880px; margin: 0 auto; }
details { border-top: 1px solid rgba(255,255,255,.12); padding: 0; }
details:last-child { border-bottom: 1px solid rgba(255,255,255,.12); }
summary {
  list-style: none; cursor: pointer; padding: 23px 4px; font-weight: 720; font-size: 17px;
  display: flex; justify-content: space-between; gap: 18px;
}
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--pink-2); font-size: 23px; font-weight: 400; }
details[open] summary::after { content: "−"; }
details .answer { padding: 0 4px 24px; color: var(--muted); line-height: 1.82; }
.site-footer { padding: 60px 0 48px; border-top: 1px solid rgba(255,255,255,.08); background: rgba(2,8,23,.34); }
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: end; }
.footer-brand { display: flex; gap: 14px; align-items: center; }
.footer-brand img { width: 48px; height: 48px; }
.footer-brand strong { display: block; font-size: 19px; }
.footer-brand span { display: block; margin-top: 4px; color: var(--muted); font-size: 13px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 10px 18px; color: var(--muted); font-size: 13px; justify-content: flex-end; align-items: center; }
.footer-attribution { flex-basis: 100%; text-align: right; color: #7d87a4; font-size: 12px; line-height: 1.6; }
.footer-attribution a { color: #aeb5cb; text-decoration: underline; text-underline-offset: 2px; }
.page-hero { padding: 84px 0 42px; }
.page-hero h1 { font-size: clamp(40px, 6vw, 68px); }
.page-hero p { color: var(--muted); line-height: 1.8; }
.prose { max-width: 820px; margin: 0 auto; padding-bottom: 100px; }
.prose-section { padding: 30px 0; border-top: 1px solid rgba(255,255,255,.11); }
.prose-section:first-child { border-top: 0; }
.prose h2 { font-size: 24px; margin-bottom: 17px; letter-spacing: -.025em; }
.prose p, .prose li { color: #c5cade; line-height: 1.9; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose .contact-box { padding: 24px; border-radius: 22px; background: rgba(49,57,97,.62); border: 1px solid rgba(255,255,255,.1); }
.prose .contact-box a { color: var(--pink-2); font-weight: 700; }
.prose .note { color: var(--muted-2); font-size: 13px; }
.qa { margin: 0; padding: 26px 0; border-top: 1px solid rgba(255,255,255,.1); }
.qa h2 { font-size: 19px; line-height: 1.55; }
.qa p, .qa ol { margin-bottom: 0; }
[data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
[data-reveal].is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .button { transition: none; }
}
@media (max-width: 920px) {
  .nav-links { gap: 16px; }
  .nav-links .desktop-only { display: none; }
  .hero-grid, .screenshot-showcase { grid-template-columns: 1fr; }
  .screen-stack { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero { padding-top: 58px; }
  .hero-copy { text-align: center; }
  .hero-copy h1, .hero-copy .lead { margin-left: auto; margin-right: auto; }
  .hero-lead { max-width: 680px; }
  .hero-lead span { white-space: normal; }
  .hero-logo-row, .hero-actions, .trust-row { justify-content: center; }
  .pro-note { text-align: center; }
  .hero-visual { min-height: 620px; }
  .screenshot-copy { position: static; }
  .step-grid { grid-template-columns: 1fr; }
  .step-card { min-height: 0; }
  .step-number { margin-bottom: 30px; }
  .fact-grid { grid-template-columns: repeat(2, 1fr); }
  .fact-card:last-child { grid-column: 1 / -1; }
}
@media (max-width: 680px) {
  .nav { min-height: 66px; padding: 0 16px; }
  .brand { font-size: 19px; gap: 9px; }
  .brand span { display: inline; }
  .brand img { width: 42px; height: 42px; }
  .nav-links { display: none; }
  .nav .button { min-height: 42px; padding: 0 14px; font-size: 13px; }
  .container { padding: 0 18px; }
  .section { padding: 78px 0; }
  .hero { padding: 46px 0 58px; }
  h1 { font-size: clamp(38px, 11.3vw, 44px); line-height: 1.3; }
  h2 { font-size: clamp(32px, 10vw, 44px); line-height: 1.3; }
  .hero-logo-row { margin-bottom: 23px; }
  .hero-logo-row img { width: 48px; height: 48px; }
  .hero-visual { min-height: 560px; }
  .phone-shell { width: 330px; border-radius: 44px; }
  .phone-shell img { border-radius: 38px; }
  .fact-grid { grid-template-columns: 1fr; }
  .fact-card:last-child { grid-column: auto; }
  .screen-stack { grid-template-columns: 1fr; }
  .screen-card { grid-template-columns: 1fr; padding: 14px; gap: 16px; }
  .screen-card img { width: min(280px, 100%); border-radius: 22px; }
  .privacy-callout { grid-template-columns: 1fr; }
  .lock-orbit { width: 90px; height: 90px; }
  .price-card { padding: 30px 22px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-links { justify-content: flex-start; }
  .footer-attribution { text-align: left; }
  .page-hero { padding-top: 60px; }
}

/* --- フリコピ追加: 課題→解決のカード --- */
.fact-card strong span {
  display: block;
  margin-top: 8px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--pink-2);
  letter-spacing: 0;
}
.fact-card strong {
  line-height: 1.5;
}