:root {
  color-scheme: dark;
  --bg: #060b18;
  --bg-soft: #0b1428;
  --panel: rgba(13, 27, 52, 0.78);
  --panel-strong: #0e1b34;
  --text: #f5f8ff;
  --muted: #aebbd2;
  --cyan: #15d7ff;
  --blue: #3478ff;
  --purple: #8c5cff;
  --green: #45e19a;
  --yellow: #ffd04a;
  --danger: #ff6d78;
  --line: rgba(123, 168, 255, 0.20);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
  --radius: 22px;
  --max: 1180px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 18% -5%, rgba(37, 118, 255, 0.26), transparent 34rem),
    radial-gradient(circle at 90% 12%, rgba(21, 215, 255, 0.14), transparent 30rem),
    linear-gradient(180deg, #071020 0%, #050914 45%, #060b18 100%);
  line-height: 1.7;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.12;
  background-image:
    linear-gradient(rgba(90, 139, 230, 0.25) 1px, transparent 1px),
    linear-gradient(90deg, rgba(90, 139, 230, 0.25) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, black, transparent 72%);
}

a { color: inherit; }
img { max-width: 100%; display: block; }

[hidden] { display: none !important; }

.container {
  width: min(calc(100% - 36px), var(--max));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  left: 12px;
  top: -100px;
  z-index: 1000;
  background: #fff;
  color: #000;
  padding: 10px 14px;
  border-radius: 8px;
}
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(114, 159, 243, 0.16);
  background: rgba(5, 10, 23, 0.74);
  backdrop-filter: blur(18px);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.02em;
}
.brand img {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  box-shadow: 0 0 22px rgba(23, 153, 255, 0.42);
}
.brand small {
  display: block;
  color: var(--cyan);
  font-size: 0.70rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.2;
}

.nav-wrap {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
}
.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 650;
}
.nav a:hover, .nav a:focus-visible { color: var(--text); }

.lang-switch {
  display: inline-flex;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(12, 25, 48, 0.86);
}
.lang-switch button {
  border: 0;
  padding: 7px 10px;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-weight: 800;
}
.lang-switch button[aria-pressed="true"] {
  color: #03101a;
  background: linear-gradient(135deg, var(--cyan), #6befff);
}

.hero {
  position: relative;
  padding: 92px 0 70px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.03fr 0.97fr;
  align-items: center;
  gap: 54px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid rgba(75, 212, 255, 0.25);
  border-radius: 999px;
  color: #9eeeff;
  background: rgba(18, 111, 167, 0.13);
  font-size: 0.83rem;
  font-weight: 800;
}
.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 14px var(--green);
}

.hero h1 {
  margin: 22px 0 16px;
  font-size: clamp(2.6rem, 6vw, 5.4rem);
  line-height: 1.02;
  letter-spacing: -0.055em;
}
.gradient-text {
  background: linear-gradient(100deg, #fff 8%, #87ecff 58%, #5f8eff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lead {
  max-width: 700px;
  margin: 0;
  color: #c4d0e4;
  font-size: clamp(1.02rem, 2vw, 1.22rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 14px;
  text-decoration: none;
  font-weight: 850;
  transition: transform 160ms ease, filter 160ms ease, border-color 160ms ease;
}
.button:hover { transform: translateY(-2px); filter: brightness(1.05); }
.button-primary {
  color: #03121c;
  background: linear-gradient(135deg, var(--cyan), #7eeaff);
  box-shadow: 0 14px 38px rgba(21, 215, 255, 0.22);
}
.button-secondary {
  border-color: var(--line);
  background: rgba(12, 24, 45, 0.82);
  color: var(--text);
}
.play-mark {
  width: 20px;
  height: 20px;
  display: inline-grid;
  place-items: center;
  clip-path: polygon(0 0, 100% 50%, 0 100%);
  background: linear-gradient(180deg, #2688ff, #16d9ff);
}

.hero-note {
  margin-top: 16px;
  color: #8fa0ba;
  font-size: 0.88rem;
}

.hero-visual {
  position: relative;
  min-height: 560px;
  display: grid;
  place-items: center;
}
.glow {
  position: absolute;
  width: 440px;
  height: 440px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(21, 215, 255, 0.26), transparent 66%);
  filter: blur(18px);
}
.phone-frame {
  position: relative;
  z-index: 2;
  width: min(310px, 72vw);
  height: 560px;
  padding: 12px;
  overflow: hidden;
  border: 1px solid rgba(117, 178, 255, 0.30);
  border-radius: 38px;
  background: linear-gradient(150deg, #1a2b4c, #050a14 40%, #132540);
  box-shadow: var(--shadow), 0 0 50px rgba(42, 144, 255, 0.15);
  transform: rotate(2.5deg);
}
.phone-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  border-radius: 28px;
}
.floating-card {
  position: absolute;
  z-index: 3;
  width: 220px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(11, 24, 46, 0.88);
  backdrop-filter: blur(15px);
  box-shadow: var(--shadow);
}
.floating-card strong { display: block; font-size: 1.02rem; }
.floating-card span { color: var(--muted); font-size: 0.83rem; }
.card-a { left: 0; top: 96px; }
.card-b { right: -10px; bottom: 78px; }
.floating-icon {
  width: 38px;
  height: 38px;
  margin-bottom: 10px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: var(--cyan);
  background: rgba(19, 189, 255, 0.12);
  font-size: 1.25rem;
}

.metrics {
  padding: 12px 0 72px;
}
.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(10, 22, 43, 0.72);
  overflow: hidden;
}
.metric {
  padding: 24px;
  text-align: center;
  border-right: 1px solid var(--line);
}
.metric:last-child { border-right: 0; }
.metric b {
  display: block;
  color: var(--cyan);
  font-size: 1.8rem;
  line-height: 1;
}
.metric span { color: var(--muted); font-size: 0.90rem; }

.section {
  padding: 84px 0;
}
.section-header {
  max-width: 760px;
  margin: 0 auto 42px;
  text-align: center;
}
.section-kicker {
  margin: 0 0 8px;
  color: var(--cyan);
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  font-weight: 900;
}
.section h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.4rem);
  letter-spacing: -0.04em;
  line-height: 1.15;
}
.section-header p {
  margin: 14px auto 0;
  color: var(--muted);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.feature-card {
  min-height: 250px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(145deg, rgba(18, 44, 78, 0.72), rgba(8, 17, 33, 0.78));
  box-shadow: 0 18px 50px rgba(0,0,0,0.18);
}
.feature-card .icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(145deg, rgba(25, 219, 255, 0.22), rgba(59, 104, 255, 0.14));
  color: #aef3ff;
  font-size: 1.35rem;
  margin-bottom: 18px;
}
.feature-card h3 { margin: 0 0 8px; font-size: 1.18rem; }
.feature-card p { margin: 0; color: var(--muted); font-size: 0.94rem; }

.path {
  display: grid;
  gap: 16px;
  max-width: 880px;
  margin: 0 auto;
}
.path-step {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 18px;
  align-items: start;
  padding: 21px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(10, 22, 43, 0.66);
}
.step-no {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  color: #07101d;
  background: linear-gradient(135deg, var(--cyan), #6a90ff);
  font-size: 1.22rem;
  font-weight: 950;
}
.path-step h3 { margin: 0 0 4px; }
.path-step p { margin: 0; color: var(--muted); }

.gallery-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 24px;
}
.gallery-tabs button {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 9px 15px;
  color: var(--muted);
  background: rgba(9, 20, 40, 0.76);
  cursor: pointer;
  font-weight: 800;
}
.gallery-tabs button[aria-selected="true"] {
  color: #06111b;
  background: var(--cyan);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}
.gallery figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #08111f;
  box-shadow: 0 18px 50px rgba(0,0,0,0.22);
}
.gallery img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  transition: transform 180ms ease;
}
.gallery figure:hover img { transform: scale(1.018); }

.real-screen-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  max-width: 950px;
  margin: 50px auto 0;
}
.real-screen {
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 9px;
  background: linear-gradient(160deg, #142747, #060b14);
  box-shadow: 0 20px 60px rgba(0,0,0,0.28);
}
.real-screen img { border-radius: 18px; }

.pricing-wrap {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 28px;
  align-items: stretch;
}
.price-card,
.detail-card {
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(10, 23, 44, 0.82);
}
.price-card {
  position: relative;
  overflow: hidden;
}
.price-card::after {
  content: "";
  position: absolute;
  width: 230px;
  height: 230px;
  right: -80px;
  top: -90px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(21,215,255,0.28), transparent 70%);
}
.price-tag {
  font-size: clamp(2.3rem, 6vw, 4rem);
  font-weight: 950;
  line-height: 1;
}
.price-tag small {
  display: block;
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.5;
  font-weight: 600;
}
.check-list {
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
}
.check-list li {
  position: relative;
  padding-left: 28px;
  margin: 10px 0;
  color: #c9d4e7;
}
.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 950;
}
.detail-card h3 { margin-top: 0; }
.detail-card p { color: var(--muted); }
.notice {
  padding: 16px 18px;
  border: 1px solid rgba(255,208,74,0.24);
  border-radius: 14px;
  color: #f4df9c;
  background: rgba(111, 82, 8, 0.13);
}

.faq {
  max-width: 880px;
  margin: 0 auto;
  display: grid;
  gap: 12px;
}
.faq details {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(10, 22, 43, 0.68);
}
.faq summary {
  cursor: pointer;
  padding: 18px 20px;
  font-weight: 850;
}
.faq details div {
  padding: 0 20px 20px;
  color: var(--muted);
}

.cta {
  padding: 70px 0 92px;
}
.cta-box {
  position: relative;
  overflow: hidden;
  padding: 54px;
  border: 1px solid rgba(75, 210, 255, 0.25);
  border-radius: 30px;
  text-align: center;
  background:
    radial-gradient(circle at 50% -20%, rgba(37, 142, 255, 0.36), transparent 54%),
    linear-gradient(145deg, #102745, #07101e);
  box-shadow: var(--shadow);
}
.cta-box h2 { margin: 0 0 10px; }
.cta-box p { margin: 0 auto 24px; color: var(--muted); max-width: 690px; }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 34px 0;
  color: #8999b3;
  font-size: 0.88rem;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-links a { text-decoration: none; }
.footer-links a:hover { color: var(--text); }

.legal-hero {
  padding: 72px 0 34px;
}
.legal-hero h1 {
  margin: 0 0 12px;
  font-size: clamp(2.2rem, 5vw, 4rem);
  line-height: 1.12;
}
.legal-hero p { color: var(--muted); margin: 0; }
.legal-content {
  padding: 20px 0 90px;
}
.legal-card {
  max-width: 900px;
  margin: 0 auto;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(10, 22, 43, 0.75);
}
.legal-card h2 { margin-top: 36px; font-size: 1.35rem; }
.legal-card h2:first-child { margin-top: 0; }
.legal-card p, .legal-card li { color: #bcc8dc; }
.legal-card a { color: var(--cyan); }
.legal-card code {
  color: #aef3ff;
  background: #071120;
  padding: 2px 6px;
  border-radius: 5px;
}

.support-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.support-card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(10, 22, 43, 0.72);
}
.support-card h2 { margin-top: 0; }

@media (max-width: 920px) {
  .nav { display: none; }
  .hero-grid, .pricing-wrap { grid-template-columns: 1fr; }
  .hero { padding-top: 62px; }
  .hero-visual { min-height: 500px; }
  .phone-frame { height: 500px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .gallery { grid-template-columns: repeat(3, 1fr); }
  .real-screen-grid { grid-template-columns: repeat(2, 1fr); }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .metric:nth-child(2) { border-right: 0; }
  .metric:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .support-grid { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .container { width: min(calc(100% - 24px), var(--max)); }
  .site-header .brand span { font-size: 0.94rem; }
  .header-inner { min-height: 64px; }
  .hero { padding-top: 48px; }
  .hero h1 { font-size: 2.7rem; }
  .hero-visual {
    min-height: 445px;
    height: 445px;
    margin-top: 20px;
  }
  .phone-frame {
    width: 225px;
    height: 410px;
    padding: 8px;
    border-radius: 31px;
    transform: rotate(1.5deg);
  }
  .phone-frame img { border-radius: 23px; }
  .glow {
    width: 330px;
    height: 330px;
  }
  .floating-card {
    width: 158px;
    padding: 12px;
  }
  .floating-card strong { font-size: 0.92rem; }
  .floating-card span { font-size: 0.76rem; }
  .floating-icon {
    width: 32px;
    height: 32px;
    margin-bottom: 7px;
    font-size: 1rem;
  }
  .card-a { left: 0; top: 34px; }
  .card-b { right: 0; bottom: 24px; }
  .feature-grid { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .gallery figure:last-child { display: none; }
  .section { padding: 64px 0; }
  .cta-box { padding: 38px 22px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .legal-card { padding: 24px 20px; }
  .path-step { grid-template-columns: 48px 1fr; }
  .step-no { width: 44px; height: 44px; border-radius: 13px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

.support-faq { margin-top: 30px; }