:root {
  --sp-bg: #0b1020;
  --sp-bg-soft: #121933;
  --sp-surface: rgba(18, 25, 51, 0.78);
  --sp-surface-strong: rgba(20, 28, 56, 0.92);
  --sp-border: rgba(168, 186, 255, 0.16);
  --sp-text: #edf2ff;
  --sp-muted: #b4bfdc;
  --sp-faint: #7f8bb0;
  --sp-accent: #72e2b8;
  --sp-accent-alt: #8da2ff;
  --sp-accent-ink: #07131c;
  --sp-shadow-sm: 0 10px 30px rgba(3, 8, 20, 0.18);
  --sp-shadow-lg: 0 24px 80px rgba(3, 8, 20, 0.28);
  --sp-radius-lg: 1.4rem;
  --sp-radius-xl: 1.9rem;
  --sp-transition: 220ms cubic-bezier(0.16, 1, 0.3, 1);
}

html { scroll-behavior: smooth; }
body {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--sp-text);
  background:
    radial-gradient(circle at top left, rgba(114, 226, 184, 0.12), transparent 28%),
    radial-gradient(circle at 80% 20%, rgba(141, 162, 255, 0.16), transparent 24%),
    linear-gradient(180deg, #0a1020 0%, #0d1326 48%, #0b1020 100%);
  overflow-x: hidden;
}

.text-muted-soft { color: var(--sp-muted) !important; }
.text-faint { color: var(--sp-faint) !important; }
.bg-glass {
  background: var(--sp-surface);
  border: 1px solid var(--sp-border);
  box-shadow: var(--sp-shadow-sm);
  backdrop-filter: blur(14px);
}
.bg-glass-strong {
  background: var(--sp-surface-strong);
  border: 1px solid var(--sp-border);
  box-shadow: var(--sp-shadow-lg);
  backdrop-filter: blur(16px);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--sp-accent);
  color: var(--sp-accent-ink);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  z-index: 2000;
  transition: top var(--sp-transition);
}
.skip-link:focus { top: 1rem; }

.site-header {
  transition: background var(--sp-transition), border-color var(--sp-transition), box-shadow var(--sp-transition);
  background: rgba(11, 16, 32, 0.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(11, 16, 32, 0.9);
  border-color: var(--sp-border);
  box-shadow: var(--sp-shadow-sm);
}

.navbar-brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--sp-text) !important;
}

.brand-mark {
  width: 2.25rem;
  height: 2.25rem;
  padding: 0.35rem;
  border-radius: 0.8rem;
  color: var(--sp-text);
  border: 1px solid rgba(255,255,255,0.12);
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03));
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
}

.nav-link {
  color: var(--sp-muted) !important;
  border-radius: 999px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding-inline: 1rem !important;
  transition: color var(--sp-transition), background var(--sp-transition), transform var(--sp-transition);
}
.nav-link:hover,
.nav-link:focus-visible {
  color: var(--sp-text) !important;
  background: rgba(255,255,255,0.05);
  transform: translateY(-1px);
  outline: none;
}
.nav-link.active {
  color: var(--sp-text) !important;
  background: rgba(114, 226, 184, 0.12);
}

.hero {
  padding-top: clamp(4rem, 9vw, 7rem);
  padding-bottom: clamp(3.5rem, 7vw, 6rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.8rem;
  border: 1px solid rgba(114, 226, 184, 0.16);
  background: rgba(114, 226, 184, 0.08);
  border-radius: 999px;
  color: #d6fff1;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.display-headline {
  font-size: clamp(2.7rem, 6vw, 5.5rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
  max-width: 10ch;
}

.hero-copy,
.hero-panel {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeUp 900ms forwards;
}
.hero-copy { animation-delay: 120ms; }
.hero-panel { animation-delay: 260ms; }

.hero-panel {
  min-height: 20rem;
  border-radius: var(--sp-radius-xl);
  overflow: hidden;
  position: relative;
  isolation: isolate;
  background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
}
.hero-panel::before,
.hero-panel::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(10px);
  opacity: 0.9;
}
.hero-panel::before {
  inset: auto auto 8% -8%;
  width: 10rem;
  height: 10rem;
  background: radial-gradient(circle, rgba(114, 226, 184, 0.28), transparent 70%);
}
.hero-panel::after {
  inset: 8% -6% auto auto;
  width: 11rem;
  height: 11rem;
  background: radial-gradient(circle, rgba(141, 162, 255, 0.24), transparent 72%);
}

.grid-visual {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 2.75rem 2.75rem;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.85), transparent 95%);
  opacity: 0.35;
}

.pillars {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  align-items: end;
  justify-content: center;
  gap: clamp(0.75rem, 2vw, 1.25rem);
  padding: 3rem 0.75rem 0.75rem;
}
.pillar {
  width: min(18vw, 5.5rem);
  min-width: 3.2rem;
  border-radius: var(--sp-radius-lg) var(--sp-radius-lg) 0 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.18), rgba(255,255,255,0.04));
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
  position: relative;
  animation: float 4.8s ease-in-out infinite;
  transform-origin: bottom center;
}
.pillar:nth-child(1) { height: 42%; animation-delay: 0s; }
.pillar:nth-child(2) { height: 72%; animation-delay: 0.5s; }
.pillar:nth-child(3) { height: 58%; animation-delay: 1s; }
.pillar:nth-child(4) { height: 84%; animation-delay: 1.5s; }
.pillar::before {
  content: "";
  position: absolute;
  inset: 0.8rem 0.55rem auto;
  height: 0.3rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.16);
  box-shadow: 0 1.2rem 0 rgba(255,255,255,0.08), 0 2.4rem 0 rgba(255,255,255,0.06);
}

.section-space { padding-block: clamp(3rem, 6vw, 5rem); }
.section-title {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  letter-spacing: -0.04em;
}

.feature-card,
.cta-card {
  border-radius: var(--sp-radius-lg);
  transition: transform var(--sp-transition), border-color var(--sp-transition), background var(--sp-transition), box-shadow var(--sp-transition);
  overflow: hidden;
}
.feature-card:hover,
.feature-card:focus-within {
  transform: translateY(-4px);
  background: var(--sp-surface-strong);
  border-color: rgba(141, 162, 255, 0.24);
  box-shadow: var(--sp-shadow-lg);
}

.feature-card::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(114,226,184,0.5), transparent);
  opacity: 0;
  transition: opacity var(--sp-transition);
}
.feature-card:hover::after,
.feature-card:focus-within::after { opacity: 1; }

.icon-chip {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 0.9rem;
  display: inline-grid;
  place-items: center;
  background: rgba(255,255,255,0.05);
  color: var(--sp-accent);
}

.form-control,
.btn {
  min-height: 3.5rem;
  border-radius: 999px;
}
.form-control {
  background: rgba(8, 12, 24, 0.62);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--sp-text);
  padding-inline: 1rem;
}
.form-control::placeholder { color: var(--sp-faint); }
.form-control:focus {
  color: var(--sp-text);
  background: rgba(8, 12, 24, 0.88);
  border-color: rgba(114, 226, 184, 0.55);
  box-shadow: 0 0 0 0.25rem rgba(114, 226, 184, 0.12);
}

.btn-accent {
  --bs-btn-color: var(--sp-accent-ink);
  --bs-btn-bg: #72e2b8;
  --bs-btn-border-color: #72e2b8;
  --bs-btn-hover-color: var(--sp-accent-ink);
  --bs-btn-hover-bg: #82ecc5;
  --bs-btn-hover-border-color: #82ecc5;
  --bs-btn-active-color: var(--sp-accent-ink);
  --bs-btn-active-bg: #66d7ad;
  --bs-btn-active-border-color: #66d7ad;
  --bs-btn-focus-shadow-rgb: 114, 226, 184;
  font-weight: 700;
  box-shadow: 0 16px 36px rgba(114, 226, 184, 0.22);
  transition: transform var(--sp-transition), box-shadow var(--sp-transition), filter var(--sp-transition);
}
.btn-accent:hover,
.btn-accent:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 22px 44px rgba(114, 226, 184, 0.26);
  filter: saturate(1.05);
}

.cta-card {
  position: relative;
  border-radius: var(--sp-radius-xl);
  overflow: hidden;
}
.cta-card::before {
  content: "";
  position: absolute;
  inset: auto -10% -40% auto;
  width: 18rem;
  height: 18rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(114, 226, 184, 0.18), transparent 70%);
  pointer-events: none;
}

.footer-link {
  color: var(--sp-muted);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}
.footer-link:hover,
.footer-link:focus-visible {
  color: var(--sp-text);
  outline: none;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 700ms cubic-bezier(0.16, 1, 0.3, 1), transform 700ms cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@media (max-width: 991.98px) {
  .navbar-collapse {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--sp-border);
  }
  .display-headline { max-width: 12ch; }
  .hero-panel { min-height: 17rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .hero-copy, .hero-panel, .reveal { opacity: 1 !important; transform: none !important; }
}