:root {
  color-scheme: dark;

  /* Colors */
  --bg-primary: #000000;
  --bg-elevated: #08080a;
  --bg-glass: rgba(255, 255, 255, 0.04);
  --bg-glass-strong: rgba(255, 255, 255, 0.06);
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-tertiary: #71717a;
  --accent: #6366f1;
  --accent-hover: #7c7ff8;
  --accent-soft: rgba(99, 102, 241, 0.22);
  --border-subtle: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.2);
  --success: #22c55e;
  --error: #f43f5e;

  /* Typography */
  --font-sans: "SF Pro Display", "SF Pro Text", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-size-hero: clamp(48px, 8vw, 64px);
  --font-size-section: clamp(32px, 5vw, 40px);
  --font-size-card: 22px;
  --font-size-body-lg: 18px;
  --font-size-body: 16px;
  --font-size-fine: 14px;

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  --space-30: 120px;

  /* Radius + effects */
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --shadow-soft: 0 6px 24px rgba(0, 0, 0, 0.32);
  --shadow-accent: 0 10px 40px rgba(99, 102, 241, 0.22);

  /* Layout */
  --container-max: 1120px;
  --container-pad: 20px;
  --section-space: 88px;
  --nav-height: 64px;

  /* Motion */
  --ease-premium: cubic-bezier(0.22, 1, 0.36, 1);
  --motion-standard: 560ms;
  --motion-quick: 320ms;
}

@media (min-width: 768px) {
  :root {
    --container-pad: 32px;
    --section-space: 104px;
  }
}

@media (min-width: 1024px) {
  :root {
    --container-pad: 40px;
    --section-space: 120px;
    --nav-height: 72px;
    --font-size-card: 24px;
  }
}

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

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

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: var(--font-size-body);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

p {
  margin: 0;
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  text-wrap: balance;
}

[hidden] {
  display: none !important;
}

.container {
  width: min(100%, calc(var(--container-max) + (var(--container-pad) * 2)));
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  position: relative;
}

.section + .section {
  margin-top: var(--section-space);
}

#early-access,
#final-cta {
  scroll-margin-top: calc(var(--nav-height) + var(--space-4));
}

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  border-bottom: 1px solid transparent;
  background: rgba(0, 0, 0, 0.84);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: border-color var(--motion-quick) var(--ease-premium),
    background-color var(--motion-quick) var(--ease-premium), backdrop-filter var(--motion-quick) var(--ease-premium);
}

.nav.is-scrolled {
  border-bottom-color: rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.nav__inner {
  display: flex;
  height: 100%;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.nav__brand {
  text-decoration: none;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  padding-inline: 22px;
  text-decoration: none;
  font-size: 16px;
  font-weight: 600;
  white-space: nowrap;
  line-height: 1;
  cursor: pointer;
  transition: transform 140ms ease, background-color var(--motion-quick) var(--ease-premium),
    box-shadow var(--motion-quick) var(--ease-premium), border-color var(--motion-quick) var(--ease-premium),
    color var(--motion-quick) var(--ease-premium);
}

.button:focus-visible {
  outline: 2px solid rgba(124, 127, 248, 0.9);
  outline-offset: 2px;
}

.button:active {
  transform: scale(0.98);
}

.button:disabled,
.button[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
}

.button--nav,
.button--primary {
  border-color: transparent;
  background: var(--accent);
  color: #ffffff;
}

.button--nav {
  height: 42px;
  padding-inline: 18px;
}

.button--primary {
  height: 52px;
}

@media (hover: hover) {
  .button--nav:hover,
  .button--primary:hover {
    background: var(--accent-hover);
    box-shadow: var(--shadow-accent);
  }
}

.hero {
  display: flex;
  min-height: 100svh;
  align-items: center;
  overflow: hidden;
  padding-block: calc(var(--nav-height) + var(--space-6)) var(--space-12);
}

.hero__glow {
  position: absolute;
  left: 50%;
  top: 26%;
  z-index: 0;
  width: min(94vw, 760px);
  aspect-ratio: 2 / 1;
  transform: translateX(-50%);
  border-radius: 999px;
  background: radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.32), rgba(99, 102, 241, 0.11) 52%, transparent 74%);
  filter: blur(20px);
  pointer-events: none;
  will-change: transform;
}

.hero__content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-6);
}

#hero-heading {
  max-width: 12ch;
  font-size: var(--font-size-hero);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.hero__subhead {
  max-width: 640px;
  color: var(--text-secondary);
  font-size: var(--font-size-body-lg);
}

.email-form {
  width: min(100%, 760px);
}

.email-form__controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.email-form input[type="email"] {
  width: 100%;
  min-width: 0;
  height: 52px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  font: inherit;
  font-size: 16px;
  padding-inline: var(--space-4);
  transition: border-color var(--motion-quick) var(--ease-premium),
    box-shadow var(--motion-quick) var(--ease-premium), background-color var(--motion-quick) var(--ease-premium);
}

.email-form input[type="email"]::placeholder {
  color: var(--text-tertiary);
}

.email-form input[type="email"]:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.18);
  background: rgba(255, 255, 255, 0.045);
}

.email-form input[type="email"][aria-invalid="true"],
.email-form input[type="email"].is-invalid {
  border-color: var(--error);
  box-shadow: 0 0 0 3px rgba(244, 63, 94, 0.18);
}

.email-form__error {
  margin-top: var(--space-2);
  color: var(--error);
  font-size: var(--font-size-fine);
  line-height: 1.5;
}

.email-form__disclosure,
.email-form__subtext,
.email-form__fine-print {
  margin-top: var(--space-3);
  font-size: var(--font-size-fine);
  line-height: 1.5;
}

.email-form__disclosure {
  color: var(--text-tertiary);
}

.email-form__subtext,
.email-form__fine-print {
  color: var(--text-secondary);
}

.email-form__success {
  width: min(100%, 520px);
  border: 1px solid rgba(34, 197, 94, 0.32);
  border-radius: var(--radius-lg);
  background: rgba(34, 197, 94, 0.08);
  padding: var(--space-6);
}

.email-form__success h3 {
  font-size: 24px;
  font-weight: 600;
  line-height: 1.2;
}

.email-form__success p {
  margin-top: var(--space-2);
  color: rgba(255, 255, 255, 0.84);
}

.back-to-top {
  display: inline-flex;
  margin-top: var(--space-4);
  color: #b9bbff;
  text-decoration: none;
}

.back-to-top:hover,
.back-to-top:focus-visible {
  color: #ffffff;
}

.problem .container {
  position: relative;
}

.problem h2 {
  max-width: 18ch;
  font-size: var(--font-size-section);
  font-weight: 650;
  line-height: 1.12;
  letter-spacing: -0.015em;
}

.problem p {
  max-width: 760px;
  margin-top: var(--space-5);
  color: var(--text-secondary);
  font-size: var(--font-size-body-lg);
}

@media (min-width: 768px) {
  .problem .container {
    padding-left: calc(var(--container-pad) + var(--space-5));
  }

  .problem .container::before {
    content: "";
    position: absolute;
    left: var(--container-pad);
    top: 2px;
    bottom: 2px;
    width: 1px;
    background: linear-gradient(to bottom, rgba(99, 102, 241, 0.7), rgba(99, 102, 241, 0.08));
  }
}

.solution-pillars__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.solution-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: var(--bg-glass);
  padding: 24px;
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform var(--motion-quick) var(--ease-premium),
    border-color var(--motion-quick) var(--ease-premium), box-shadow var(--motion-quick) var(--ease-premium);
}

.solution-card::after {
  content: "";
  position: absolute;
  left: -12%;
  right: -12%;
  bottom: -45%;
  height: 220px;
  background: radial-gradient(circle at 50% 100%, rgba(99, 102, 241, 0.38), transparent 67%);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--motion-quick) var(--ease-premium);
}

.solution-card h3 {
  margin-bottom: var(--space-3);
  font-size: var(--font-size-card);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.012em;
}

.solution-card p {
  color: var(--text-secondary);
}

@media (min-width: 768px) {
  .solution-pillars__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-6);
  }

  .solution-card:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1024px) {
  .solution-pillars__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .solution-card {
    min-height: 260px;
    padding: 28px;
  }

  .solution-card:last-child {
    grid-column: auto;
  }
}

@media (hover: hover) {
  .solution-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-strong);
    box-shadow: 0 14px 42px rgba(0, 0, 0, 0.44), var(--shadow-accent);
  }

  .solution-card:hover::after {
    opacity: 1;
  }
}

.how-it-works__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: center;
}

.how-it-works__copy h2 {
  max-width: 18ch;
  font-size: var(--font-size-section);
  font-weight: 650;
  line-height: 1.12;
  letter-spacing: -0.015em;
}

.how-it-works__copy p {
  margin-top: var(--space-5);
  color: var(--text-secondary);
  font-size: var(--font-size-body-lg);
}

.how-it-works__visual {
  margin: 0;
  display: grid;
  place-items: center;
  gap: var(--space-3);
  padding: var(--space-8);
  min-height: 260px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  background: linear-gradient(155deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.how-it-works__illustration {
  position: relative;
  width: min(100%, 360px);
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: radial-gradient(circle at 50% 10%, rgba(99, 102, 241, 0.28), rgba(99, 102, 241, 0.02) 54%, transparent 70%),
    linear-gradient(180deg, rgba(10, 10, 14, 0.96), rgba(6, 6, 9, 0.94));
  overflow: hidden;
  will-change: transform;
}

.how-it-works__illustration::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 56%;
  width: 34%;
  height: 60%;
  border-radius: 18px;
  border: 1.5px solid rgba(255, 255, 255, 0.58);
  background: rgba(255, 255, 255, 0.03);
  transform: translate(-50%, -50%);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.how-it-works__illustration::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 33%;
  width: 86px;
  height: 70px;
  border-radius: 16px;
  border: 1.5px solid rgba(255, 255, 255, 0.62);
  background: rgba(8, 8, 10, 0.62);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 30px rgba(99, 102, 241, 0.25);
}

.how-it-works__visual figcaption {
  color: var(--text-tertiary);
  font-size: var(--font-size-fine);
  line-height: 1.5;
}

@media (min-width: 1024px) {
  .how-it-works__layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: var(--space-12);
  }
}

.credibility__content {
  max-width: 760px;
  margin-inline: auto;
  text-align: center;
}

.credibility__content h2 {
  margin-inline: auto;
  max-width: 20ch;
  font-size: var(--font-size-section);
  font-weight: 650;
  line-height: 1.12;
  letter-spacing: -0.015em;
}

.credibility__content p {
  margin: var(--space-5) auto 0;
  color: var(--text-secondary);
  font-size: var(--font-size-body-lg);
}

.final-cta__content {
  max-width: 760px;
  margin-inline: auto;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-strong);
  background: linear-gradient(180deg, rgba(99, 102, 241, 0.23) -38%, rgba(8, 8, 10, 0.97) 36%, rgba(8, 8, 10, 0.97) 100%);
  box-shadow: var(--shadow-soft);
  padding: clamp(28px, 5vw, 56px);
  text-align: center;
}

.final-cta__content h2 {
  margin-inline: auto;
  max-width: 18ch;
  font-size: var(--font-size-section);
  font-weight: 650;
  line-height: 1.12;
  letter-spacing: -0.015em;
}

.final-cta__subhead {
  margin: var(--space-5) auto 0;
  max-width: 62ch;
  color: var(--text-secondary);
  font-size: var(--font-size-body-lg);
}

.final-cta .email-form {
  margin: var(--space-8) auto 0;
}

.final-cta .email-form__disclosure,
.final-cta .email-form__fine-print {
  margin-inline: auto;
  max-width: 56ch;
}

.site-footer {
  margin-top: var(--section-space);
  padding-block: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.site-footer__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: flex-start;
  font-size: var(--font-size-fine);
  line-height: 1.5;
  color: var(--text-tertiary);
}

.site-footer__content p {
  margin: 0;
}

.site-footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.site-footer__links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--motion-quick) var(--ease-premium);
}

.site-footer__links a:hover {
  color: var(--text-primary);
}

.site-footer__links a:focus-visible {
  outline: 2px solid rgba(124, 127, 248, 0.9);
  outline-offset: 2px;
}

@media (min-width: 768px) {
  .email-form__controls {
    flex-direction: row;
    align-items: center;
  }

  .email-form__controls .button {
    flex: 0 0 auto;
  }

  .site-footer__content {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-4);
  }

  .site-footer__links {
    flex-direction: row;
    align-items: center;
    gap: var(--space-5);
  }
}

[data-reveal] {
  --reveal-delay: 0ms;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--motion-standard) var(--ease-premium),
    transform var(--motion-standard) var(--ease-premium);
  transition-delay: var(--reveal-delay);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal-delay="0"] {
  --reveal-delay: 0ms;
}

[data-reveal-delay="80"] {
  --reveal-delay: 80ms;
}

[data-reveal-delay="160"] {
  --reveal-delay: 160ms;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }

  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  [data-parallax-layer] {
    transform: none !important;
  }
}