:root {
  color-scheme: dark;
  --bg: #05060f;
  --bg-alt: #0c101f;
  --surface: rgba(20, 24, 45, 0.6);
  --surface-strong: rgba(20, 24, 45, 0.9);
  --surface-border: rgba(129, 140, 248, 0.2);
  --text-primary: #f5f6ff;
  --text-secondary: rgba(209, 213, 255, 0.72);
  --accent: #8b5cf6;
  --accent-soft: rgba(139, 92, 246, 0.18);
  --accent-secondary: #06b6d4;
  --success: #34d399;
  --error: #f87171;
  --font-display: "Space Grotesk", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --shadow-lg: 0 30px 80px rgba(15, 23, 42, 0.35);
  --shadow-sm: 0 12px 40px rgba(15, 23, 42, 0.25);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  background: radial-gradient(circle at top right, rgba(14, 165, 233, 0.08), transparent 40%),
    radial-gradient(circle at 20% 20%, rgba(139, 92, 246, 0.12), transparent 45%),
    radial-gradient(circle at center, rgba(236, 72, 153, 0.08), transparent 55%), var(--bg);
  color: var(--text-primary);
  line-height: 1.65;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 9, 16, 0.4) 0%, rgba(8, 9, 16, 0.9) 100%);
  pointer-events: none;
  z-index: -3;
}

.background-accents {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -2;
}

.accent {
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.7;
  transform: translate3d(0, 0, 0);
  animation: pulse 18s infinite alternate;
}

.accent-one {
  top: -120px;
  left: -160px;
  background: rgba(139, 92, 246, 0.6);
}

.accent-two {
  bottom: -180px;
  right: -120px;
  background: rgba(56, 189, 248, 0.55);
  animation-delay: -6s;
}

.accent-three {
  top: 40%;
  right: 35%;
  background: rgba(236, 72, 153, 0.45);
  animation-delay: -12s;
}

@keyframes pulse {
  0% {
    transform: translate3d(0, 0, 0) scale(1);
    opacity: 0.6;
  }
  100% {
    transform: translate3d(40px, -30px, 0) scale(1.15);
    opacity: 0.85;
  }
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(5, 6, 15, 0.72);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(129, 140, 248, 0.08);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 1rem;
  color: #fff;
}

.site-nav {
  display: flex;
  gap: 1.5rem;
}

.site-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 200ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text-primary);
}

main {
  display: flex;
  flex-direction: column;
  gap: 6rem;
}

section {
  padding-block: clamp(4rem, 10vw, 7rem);
}

.hero {
  padding-top: clamp(6rem, 12vw, 9rem);
}

.hero-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 6vw, 4rem);
  align-items: center;
}

.hero-copy h1 {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5vw, 3.8rem);
  line-height: 1.05;
  margin-bottom: 1.5rem;
}

.hero-copy .lead {
  color: var(--text-secondary);
  font-size: clamp(1rem, 2vw, 1.1rem);
  margin-bottom: 2rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.12);
  color: #bef8ff;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.social-proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2.5rem;
}

.social-proof div {
  padding: 1.1rem 1.2rem;
  border-radius: 18px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(148, 163, 255, 0.14);
  box-shadow: var(--shadow-sm);
}

.social-proof strong {
  display: block;
  font-family: var(--font-display);
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}

.social-proof span {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.hero-visual {
  position: relative;
  display: grid;
  place-items: center;
}

.floating-card {
  position: relative;
  padding: clamp(2rem, 4vw, 2.8rem);
  border-radius: 26px;
  background: linear-gradient(135deg, rgba(20, 24, 45, 0.9) 0%, rgba(17, 24, 39, 0.8) 100%);
  border: 1px solid rgba(129, 140, 248, 0.2);
  box-shadow: var(--shadow-lg);
  max-width: 420px;
  backdrop-filter: blur(20px);
}

.card-badge {
  display: inline-flex;
  padding: 0.35rem 0.8rem;
  background: rgba(139, 92, 246, 0.12);
  border-radius: 999px;
  color: #d8b4fe;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.floating-card h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin-bottom: 1.5rem;
  line-height: 1.3;
}

.floating-card ul {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.floating-card li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 500;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 15px currentColor;
}

.dot-problem {
  color: #facc15;
}

.dot-conjecture {
  color: #38bdf8;
}

.dot-criticism {
  color: #f472b6;
}

.card-footnote {
  margin: 0;
  font-size: 0.85rem;
  color: rgba(226, 232, 240, 0.7);
}

.glow-ring {
  position: absolute;
  inset: auto;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  border: 2px solid rgba(139, 92, 246, 0.45);
  opacity: 0.6;
  filter: blur(2px);
  animation: rotate 28s linear infinite;
}

@keyframes rotate {
  from {
    transform: rotate(0deg) scale(1.05);
  }
  to {
    transform: rotate(360deg) scale(1.05);
  }
}

.section-heading {
  max-width: 680px;
  margin-bottom: 3rem;
}

.section-heading h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  margin-bottom: 1rem;
}

.section-heading p {
  color: var(--text-secondary);
  margin: 0;
  font-size: 1rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.feature-card {
  padding: 2.2rem 2rem;
  border-radius: 24px;
  background: var(--surface);
  border: 1px solid rgba(129, 140, 248, 0.12);
  box-shadow: var(--shadow-sm);
  transition: transform 250ms ease, border-color 250ms ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(14, 165, 233, 0.3);
}

.feature-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: rgba(59, 130, 246, 0.16);
  margin-bottom: 1.5rem;
}

.feature-icon svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: #bfdbfe;
  stroke-width: 2;
}

.feature-icon .icon-accent {
  stroke: var(--accent);
  fill: rgba(139, 92, 246, 0.2);
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

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

.waitlist-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 6vw, 4rem);
  align-items: center;
}

.waitlist-copy h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1rem;
}

.waitlist-copy p {
  margin: 0 0 2rem;
  color: var(--text-secondary);
}

.waitlist-benefits {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
}

.waitlist-benefits li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  font-weight: 500;
}

.bullet {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  margin-top: 0.3rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  box-shadow: 0 0 12px rgba(139, 92, 246, 0.6);
}

.waitlist-form-card {
  background: linear-gradient(150deg, rgba(13, 16, 34, 0.95) 0%, rgba(13, 19, 46, 0.9) 60%, rgba(16, 20, 48, 0.9) 100%);
  border-radius: 26px;
  padding: clamp(2rem, 4vw, 3rem);
  border: 1px solid rgba(94, 234, 212, 0.12);
  box-shadow: var(--shadow-lg);
  position: relative;
}

.waitlist-form-card::after {
  content: "";
  position: absolute;
  inset: 18px;
  border-radius: 20px;
  border: 1px dashed rgba(148, 163, 255, 0.18);
  pointer-events: none;
}

.waitlist-form {
  position: relative;
  display: grid;
  gap: 1.8rem;
  z-index: 1;
}

.form-heading h3 {
  font-family: var(--font-display);
  font-size: 1.7rem;
  margin: 0 0 0.3rem;
}

.form-heading p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}

.form-field {
  display: grid;
  gap: 0.55rem;
}

.form-field span {
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(191, 219, 254, 0.8);
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 255, 0.15);
  background: rgba(17, 24, 39, 0.65);
  color: var(--text-primary);
  font: inherit;
  padding: 0.9rem 1rem;
  transition: border-color 200ms ease, box-shadow 200ms ease;
}

.form-field textarea {
  resize: vertical;
  min-height: 120px;
}

.form-field--full {
  grid-column: 1 / -1;
}

.form-field input:focus-visible,
.form-field select:focus-visible,
.form-field textarea:focus-visible {
  outline: none;
  border-color: rgba(94, 234, 212, 0.6);
  box-shadow: 0 0 0 3px rgba(94, 234, 212, 0.25);
}

.primary-button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 0.95rem 1.4rem;
  border-radius: 999px;
  border: none;
  font-weight: 600;
  font-size: 1rem;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-secondary) 100%);
  color: #0a0c1d;
  cursor: pointer;
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.primary-button:hover,
.primary-button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 15px 35px rgba(6, 182, 212, 0.35);
}

.form-disclaimer {
  margin: 0;
  font-size: 0.8rem;
  color: rgba(203, 213, 225, 0.7);
}

.form-message {
  min-height: 1.2rem;
  font-size: 0.9rem;
  font-weight: 500;
}

.form-message.success {
  color: var(--success);
}

.form-message.error {
  color: var(--error);
}

.site-footer {
  padding: 3rem 0 2rem;
  border-top: 1px solid rgba(129, 140, 248, 0.08);
  background: rgba(5, 6, 15, 0.85);
  backdrop-filter: blur(14px);
}

.footer-layout {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.footer-layout p {
  max-width: 420px;
  color: var(--text-secondary);
  margin: 0.4rem 0 0;
}

.footer-links {
  display: grid;
  gap: 0.6rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--text-primary);
}

.footer-note {
  text-align: center;
  margin: 0;
  font-size: 0.8rem;
  color: rgba(148, 163, 255, 0.6);
}

@media (max-width: 960px) {
  .site-nav {
    gap: 1rem;
  }

  .hero-layout,
  .waitlist-layout {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    order: -1;
  }

  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .social-proof {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .site-header .container {
    padding-inline: 0.25rem;
  }

  .site-nav {
    display: none;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .social-proof {
    grid-template-columns: 1fr;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .waitlist-form-card::after {
    inset: 12px;
  }
}

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