*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #060912;
  --bg-soft: #0b1020;
  --bg-card: rgba(14, 20, 36, 0.82);
  --bg-card-strong: rgba(18, 26, 48, 0.92);
  --accent: #78a7ff;
  --accent-strong: #3f7dff;
  --accent-light: #b7d2ff;
  --text: #f5f8ff;
  --text-soft: rgba(228, 236, 255, 0.8);
  --text-muted: rgba(176, 190, 224, 0.64);
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(120, 167, 255, 0.28);
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.34);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 14% 18%, rgba(120, 167, 255, 0.16), transparent 22%),
    radial-gradient(circle at 84% 10%, rgba(63, 125, 255, 0.16), transparent 22%),
    linear-gradient(180deg, #08101d 0%, #060912 100%);
  line-height: 1.7;
  overflow-x: hidden;
}

.grid-bg {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(120, 167, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 167, 255, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
  z-index: 0;
}

.page-shell { position: relative; z-index: 1; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: rgba(6, 9, 18, 0.72);
  backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--text);
  text-decoration: none;
  font-family: 'Orbitron', sans-serif;
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: 0.24em;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-strong), var(--accent));
  box-shadow: 0 0 28px rgba(120, 167, 255, 0.28);
  font-size: 0.72rem;
}

.top-actions { display: flex; gap: 0.8rem; flex-wrap: wrap; }

.action-link,
.action-link-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.72rem 1.2rem;
  border-radius: 999px;
  text-decoration: none;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.action-link {
  color: #fff;
  background: linear-gradient(135deg, var(--accent-strong), var(--accent));
  box-shadow: 0 12px 28px rgba(63, 125, 255, 0.24);
}

.action-link-outline {
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
}

.action-link:hover,
.action-link-outline:hover { transform: translateY(-1px); }

.hero {
  padding: 4rem 2rem 2rem;
}

.hero-grid {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(480px, 1.05fr);
  gap: 2.5rem;
  align-items: center;
}

.eyebrow {
  color: var(--accent-light);
  font-family: 'Space Mono', monospace;
  font-size: 0.74rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  margin-bottom: 1.2rem;
}

.title {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(2.8rem, 5vw, 5.4rem);
  line-height: 0.98;
  text-transform: uppercase;
  margin-bottom: 1.2rem;
}

.title span {
  display: block;
  color: transparent;
  background: linear-gradient(135deg, #fff 0%, #bdd7ff 45%, #7ba9ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

.subtitle {
  max-width: 640px;
  color: var(--text-soft);
  font-size: 1.02rem;
  margin-bottom: 1.6rem;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-bottom: 1.8rem;
}

.chip {
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--text-soft);
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.stat {
  padding: 1.15rem;
  background: rgba(255,255,255,0.035);
  border: 1px solid var(--line);
  border-radius: 18px;
  backdrop-filter: blur(12px);
}

.stat strong {
  display: block;
  font-family: 'Orbitron', sans-serif;
  font-size: 1.6rem;
  color: var(--accent-light);
}

.stat span {
  display: block;
  margin-top: 0.25rem;
  color: var(--text-muted);
  font-size: 0.78rem;
}

.hero-visual {
  position: relative;
  min-height: 680px;
}

.hero-panel {
  position: absolute;
  inset: 0;
  border-radius: 34px;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.01)),
    radial-gradient(circle at 50% 18%, rgba(120,167,255,0.14), transparent 52%),
    linear-gradient(180deg, rgba(9,14,28,0.98), rgba(7,10,20,0.98));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-panel::before {
  content: '';
  position: absolute;
  inset: 18px;
  border-radius: 24px;
  border: 1px solid rgba(255,255,255,0.06);
}

.hero-panel::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 20%, rgba(255,255,255,0.06) 42%, transparent 56%);
  transform: translateX(-120%);
  animation: sweep 9s linear infinite;
}

.hero-image {
  position: absolute;
  inset: 70px 44px 26px 44px;
  width: calc(100% - 88px);
  height: calc(100% - 96px);
  object-fit: contain;
  object-position: center 16%;
  filter: drop-shadow(0 58px 84px rgba(0,0,0,0.58));
  animation: float 7s ease-in-out infinite;
}

.hero-label,
.hero-float-card {
  position: absolute;
  z-index: 2;
  background: rgba(10, 15, 28, 0.74);
  border: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.hero-label {
  top: 22px;
  left: 22px;
  padding: 0.48rem 0.85rem;
  border-radius: 999px;
  color: var(--text-soft);
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-float-card {
  min-width: 190px;
  padding: 1rem 1.05rem;
  border-radius: 18px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.26);
}

.hero-float-card span {
  display: block;
  color: var(--text-muted);
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-float-card strong {
  display: block;
  margin-top: 0.2rem;
  font-family: 'Orbitron', sans-serif;
  font-size: 1.25rem;
}

.float-top { top: 76px; right: -18px; }
.float-bottom { left: -10px; bottom: 20px; }

.section {
  max-width: 1440px;
  margin: 0 auto;
  padding: 2rem 2rem 5rem;
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: end;
  margin-bottom: 1.8rem;
}

.section-tag {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 0.9rem;
}

.section-title {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(1.6rem, 2.4vw, 2.6rem);
}

.section-copy {
  max-width: 620px;
  color: var(--text-soft);
  font-size: 0.95rem;
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.spec-card {
  padding: 1.35rem;
  border-radius: 22px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  backdrop-filter: blur(14px);
  box-shadow: 0 16px 36px rgba(0,0,0,0.18);
}

.spec-card small {
  display: block;
  color: var(--text-muted);
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.spec-card strong {
  display: block;
  margin-top: 0.45rem;
  font-family: 'Orbitron', sans-serif;
  font-size: 1.18rem;
  color: var(--accent-light);
}

.spec-card p {
  margin-top: 0.55rem;
  color: var(--text-soft);
  font-size: 0.84rem;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.4rem;
}

.feature {
  padding: 1.2rem 1.25rem;
  border-radius: 20px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--line);
}

.feature strong {
  display: block;
  font-size: 0.96rem;
  margin-bottom: 0.45rem;
}

.feature p {
  color: var(--text-soft);
  font-size: 0.84rem;
}

.scenario {
  position: relative;
  border-radius: 32px;
  overflow: hidden;
  min-height: 560px;
  border: 1px solid var(--line);
  background: #09111f;
  box-shadow: var(--shadow);
}

.scenario-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 110%;
  object-fit: cover;
  transform: translateY(calc(var(--scroll-shift, 0px) * 0.18));
  will-change: transform;
}

.scenario::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(6,9,18,0.84) 0%, rgba(6,9,18,0.42) 46%, rgba(6,9,18,0.2) 100%),
    linear-gradient(180deg, rgba(6,9,18,0.18) 0%, rgba(6,9,18,0.58) 100%);
  z-index: 1;
}

.scenario-content {
  position: relative;
  z-index: 2;
  max-width: 620px;
  padding: 3rem;
}

.scenario-content h3 {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(1.7rem, 3vw, 2.8rem);
  line-height: 1.1;
  margin-bottom: 1rem;
}

.scenario-content p {
  color: var(--text-soft);
  font-size: 0.96rem;
  margin-bottom: 1.3rem;
}

.scenario-points {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.scenario-points span {
  padding: 0.42rem 0.8rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-soft);
  font-size: 0.76rem;
  font-family: 'Space Mono', monospace;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.timeline-step {
  padding: 1.25rem;
  border-radius: 22px;
  background: var(--bg-card);
  border: 1px solid var(--line);
}

.timeline-step small {
  display: block;
  color: var(--accent-light);
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.timeline-step strong {
  display: block;
  margin-bottom: 0.45rem;
}

.timeline-step p {
  color: var(--text-soft);
  font-size: 0.84rem;
}

.footer {
  padding: 2rem;
  border-top: 1px solid var(--line);
  color: var(--text-muted);
  font-size: 0.82rem;
  text-align: center;
}

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes sweep {
  0% { transform: translateX(-120%); }
  55%, 100% { transform: translateX(140%); }
}

@media (max-width: 1100px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { min-height: 560px; }
  .spec-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-list { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .topbar { padding: 1rem 1.2rem; }
  .hero { padding: 2.4rem 1.2rem 1rem; }
  .section { padding: 1.4rem 1.2rem 4rem; }
  .hero-visual { min-height: 420px; }
  .hero-image { inset: 72px 16px 18px 16px; width: calc(100% - 32px); height: calc(100% - 90px); }
  .float-top { top: 84px; right: 12px; }
  .float-bottom { left: 12px; bottom: 14px; }
  .hero-float-card { min-width: 145px; padding: 0.85rem; }
  .stats { grid-template-columns: 1fr; }
  .spec-grid { grid-template-columns: 1fr; }
  .section-head { display: block; }
  .scenario { min-height: 500px; }
  .scenario-content { padding: 2rem 1.4rem; }
}