:root {
  --bg: #060c19;
  --bg-soft: #0a1630;
  --bg-card: rgba(13, 28, 54, 0.72);
  --line: rgba(122, 168, 255, 0.22);
  --text: #e8f0ff;
  --text-muted: #9fb2d6;
  --accent: #64f1d7;
  --accent-strong: #25b7ff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(1400px 600px at 80% -10%, rgba(44, 128, 255, 0.2), transparent 55%),
    radial-gradient(900px 500px at 10% 0%, rgba(100, 241, 215, 0.15), transparent 52%),
    var(--bg);
  font-family: "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
  line-height: 1.45;
}

.page-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(transparent 97%, rgba(255, 255, 255, 0.03) 100%);
  background-size: 100% 28px;
  opacity: 0.2;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 14, 28, 0.82);
  backdrop-filter: blur(8px);
}

.brand {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  transition: color 120ms ease;
}

.nav-links a:hover {
  color: var(--accent);
}

main {
  width: min(1080px, 92vw);
  margin: 0 auto;
  padding: 2.2rem 0 4rem;
}

.hero {
  display: grid;
  grid-template-columns: 1.45fr 0.55fr;
  gap: 1.4rem;
  align-items: center;
  padding: 2rem 0 3.3rem;
}

.kicker {
  margin: 0 0 0.4rem;
  color: var(--accent);
  font-size: 0.82rem;
  font-family: "IBM Plex Mono", "Menlo", monospace;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.5rem, 5.8vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
}

.hero h1 .headline-line {
  display: block;
}

.hero h1 .headline-line-1 {
  white-space: nowrap;
}

.subhead {
  margin: 1rem 0 1.2rem;
  max-width: 56ch;
  color: var(--text-muted);
  font-size: 1.05rem;
}

code {
  padding: 0.1rem 0.36rem;
  border: 1px solid var(--line);
  border-radius: 0.42rem;
  background: rgba(26, 48, 85, 0.4);
  color: #befbff;
  font-family: "IBM Plex Mono", "Menlo", monospace;
  font-size: 0.88em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.66rem 1rem;
  border-radius: 0.7rem;
  text-decoration: none;
  font-weight: 600;
  transition: transform 120ms ease, box-shadow 140ms ease, color 120ms ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #061322;
  background: linear-gradient(120deg, var(--accent) 0%, #7fdcff 100%);
  box-shadow: 0 6px 18px rgba(100, 241, 215, 0.24);
}

.btn-secondary {
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(18, 38, 74, 0.5);
}

.helper {
  margin: 0.85rem 0 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.hero-art {
  justify-self: center;
  width: min(220px, 48vw);
}

.hero-art img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 1.2rem;
}

.section {
  margin-top: 1.2rem;
  padding: 2rem 0;
}

.section-head {
  margin-bottom: 1rem;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(1.4rem, 2.2vw, 2.3rem);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.card {
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: var(--bg-card);
  padding: 1rem;
}

.card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--text-muted);
}

.philosophy-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.philosophy-list article {
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: var(--bg-card);
  padding: 1rem;
}

.philosophy-list h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
}

.philosophy-list p {
  margin: 0;
  color: var(--text-muted);
}

.faq-list {
  display: grid;
  gap: 0.55rem;
}

details {
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: var(--bg-card);
  padding: 0.76rem 0.9rem;
}

summary {
  cursor: pointer;
  font-weight: 600;
}

details p {
  margin: 0.6rem 0 0;
  color: var(--text-muted);
}

details a {
  color: #95f4ff;
}

.footer {
  width: min(1080px, 92vw);
  margin: 0 auto;
  padding: 1.2rem 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--line);
  color: var(--text-muted);
}

.footer a {
  color: #95f4ff;
  text-decoration: none;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  animation: reveal-up 560ms cubic-bezier(.2,.76,.2,1) forwards;
}

.reveal-1 { animation-delay: 70ms; }
.reveal-2 { animation-delay: 160ms; }
.reveal-3 { animation-delay: 220ms; }
.reveal-4 { animation-delay: 280ms; }

@keyframes reveal-up {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .hero-art {
    width: min(320px, 72vw);
  }

  .card-grid,
  .philosophy-list {
    grid-template-columns: 1fr;
  }

  .nav-links {
    gap: 0.7rem;
    flex-wrap: wrap;
    justify-content: flex-end;
  }
}

@media (max-width: 620px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.45rem;
  }

  .hero h1 {
    font-size: clamp(1.4rem, 8vw, 2.9rem);
  }

  .nav-links {
    justify-content: flex-start;
  }

  .footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }
}