:root {
  --color-bg: #0c0f12;
  --color-surface: #141a21;
  --color-text: #f4f6f8;
  --color-muted: rgba(244, 246, 248, 0.72);
  --color-accent: #14b8a6;
  --color-accent-dim: #0f766e;
  --font-sans: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --max-width: 1100px;
  --hero-overlay: linear-gradient(
    105deg,
    rgba(8, 10, 12, 0.72) 0%,
    rgba(8, 10, 12, 0.45) 42%,
    rgba(8, 10, 12, 0.35) 100%
  );
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 2rem 1.5rem 4rem;
  overflow: hidden;
  background: var(--color-bg);
}

.hero-carousel {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero-carousel__track {
  display: flex;
  height: 100%;
  width: 100%;
  will-change: transform;
  transition: transform 1.4s cubic-bezier(0.45, 0.05, 0.2, 1);
}

.hero-carousel__slide {
  flex: 0 0 100%;
  width: 100%;
  height: 100%;
  background-color: var(--color-bg);
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: var(--hero-overlay);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 2;
  max-width: 42rem;
}

.hero-dots {
  position: absolute;
  bottom: 3.25rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  gap: 0.5rem;
}

.hero-dots__btn {
  width: 0.55rem;
  height: 0.55rem;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  transition: background 0.25s ease, transform 0.25s ease;
}

.hero-dots__btn:hover {
  background: rgba(255, 255, 255, 0.6);
}

.hero-dots__btn.is-active {
  background: var(--color-accent);
  transform: scale(1.15);
}

@media (prefers-reduced-motion: reduce) {
  .hero-carousel__track {
    transition: none;
  }
}

.hero__brand {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 0.75rem;
}

.hero__headline {
  font-size: clamp(1.65rem, 5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin: 0 0 1rem;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.45);
}

.hero__tagline {
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  color: var(--color-muted);
  margin: 0 0 1.75rem;
  font-weight: 400;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.hero__cta {
  display: inline-block;
  padding: 0.85rem 1.75rem;
  background: var(--color-accent);
  color: #042f2e;
  font-weight: 600;
  border-radius: 999px;
  text-decoration: none;
  transition: transform 0.15s ease, background 0.15s ease;
}

.hero__cta:hover {
  background: #2dd4bf;
  text-decoration: none;
  transform: translateY(-1px);
}

.hero__cta--secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.hero__cta--secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text);
}

.hero__note {
  margin-top: 1.25rem;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.scroll-hint {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
}

/* Sections */
.section {
  padding: 4.5rem 1.5rem;
}

.section--alt {
  background: var(--color-surface);
}

.section__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}

.section__lead {
  color: var(--color-muted);
  margin: 0 0 2.5rem;
  max-width: 38rem;
}

.features {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.feature {
  padding: 1.5rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.feature h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  color: var(--color-accent);
}

.feature p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.steps {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  counter-reset: step;
}

.step {
  counter-increment: step;
  padding-left: 3rem;
  position: relative;
}

.step::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--color-accent-dim);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.step p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.download {
  text-align: center;
  padding: 3rem 1.5rem;
  border: 1px dashed rgba(255, 255, 255, 0.15);
  border-radius: 16px;
  background: rgba(20, 184, 166, 0.06);
}

.download__badge {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  background: rgba(20, 184, 166, 0.2);
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.download p {
  color: var(--color-muted);
  max-width: 32rem;
  margin: 0 auto 1rem;
}

.audience-list {
  display: grid;
  gap: 0.65rem 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  list-style: none;
  margin: 0;
  padding: 0;
}

.audience-list li {
  padding: 0.65rem 1rem;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--color-muted);
  font-size: 0.95rem;
}

.audience-list li::before {
  content: "✓ ";
  color: var(--color-accent);
}

.early-access-form {
  max-width: 22rem;
  margin: 1.5rem auto 0;
  text-align: left;
}

.early-access-form__label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin: 0 0 0.35rem;
  color: var(--color-text);
}

.early-access-form__optional {
  font-weight: 400;
  color: var(--color-muted);
}

.early-access-form__input {
  width: 100%;
  margin: 0 0 1rem;
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(0, 0, 0, 0.25);
  color: var(--color-text);
  font: inherit;
}

.early-access-form__input:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
}

.early-access-form__submit {
  width: 100%;
  border: none;
  cursor: pointer;
  margin-top: 0.25rem;
}

.early-access-form__note {
  margin-top: 1.25rem !important;
  font-size: 0.9rem;
}

/* Footer */
.site-footer {
  padding: 2.5rem 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.site-footer nav {
  margin-bottom: 1rem;
}

.site-footer__tagline {
  max-width: 36rem;
  margin: 0 auto 1.25rem;
  line-height: 1.5;
}

.site-footer nav a {
  margin: 0 0.75rem;
}

.site-footer__credit {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  opacity: 0.85;
}