:root {
  color-scheme: dark;
  --font-sans: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --bg: #06111c;
  --bg-soft: #0a1a2c;
  --card: rgba(10, 22, 36, 0.82);
  --card-border: rgba(170, 199, 235, 0.16);
  --text: #edf4ff;
  --muted: #adc0d7;
  --accent: #8ed6ef;
  --accent-strong: #57b9df;
  --accent-contrast: #05131f;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.38);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background:
    radial-gradient(circle at top left, rgba(88, 131, 255, 0.18), transparent 33%),
    radial-gradient(circle at 85% 20%, rgba(105, 160, 255, 0.16), transparent 28%),
    linear-gradient(180deg, #08111d 0%, #050c15 100%);
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.5;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.02), transparent 45%),
    radial-gradient(circle at 20% 80%, rgba(94, 186, 255, 0.08), transparent 20%),
    var(--bg);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(circle at center, black 35%, transparent 84%);
  pointer-events: none;
  opacity: 0.24;
}

a {
  color: inherit;
}

button,
input {
  font: inherit;
}

.backdrop {
  position: fixed;
  inset: auto;
  border-radius: 999px;
  filter: blur(20px);
  pointer-events: none;
  opacity: 0.55;
}

.backdrop--one {
  top: -90px;
  left: -70px;
  width: 320px;
  height: 320px;
  background: rgba(88, 131, 255, 0.18);
}

.backdrop--two {
  right: -70px;
  top: 160px;
  width: 280px;
  height: 280px;
  background: rgba(126, 94, 255, 0.14);
}

.shell {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
  padding: 28px 0 72px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 34px;
  padding: 16px 20px;
  border: 1px solid rgba(170, 199, 235, 0.12);
  border-radius: 999px;
  background: rgba(8, 17, 28, 0.68);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.site-header__brand {
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  text-decoration: none;
  white-space: nowrap;
}

.site-header__nav {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.site-header__nav a {
  color: rgba(237, 244, 255, 0.82);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 28px;
  align-items: center;
  min-height: calc(100vh - 180px);
}

.hero__copy {
  padding: 10px 6px;
}

.eyebrow,
.signup-card__badge,
.feature-card__kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--accent);
}

.hero h1 {
  margin: 0;
  max-width: 13ch;
  font-family: var(--font-sans);
  font-size: clamp(2.4rem, 4.7vw, 4rem);
  line-height: 1;
  letter-spacing: -0.045em;
  text-wrap: balance;
  font-weight: 700;
}

.lede {
  max-width: 60ch;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.hero__link {
  margin: 18px 0 0;
  font-size: 0.98rem;
  font-weight: 700;
}

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

.hero__link a:hover {
  text-decoration: underline;
}

.proof-points {
  display: grid;
  gap: 14px;
  padding: 0;
  margin: 30px 0 0;
  list-style: none;
}

.proof-points li {
  position: relative;
  padding: 0 0 0 28px;
  color: #d9e6f6;
}

.proof-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.58em;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), rgba(88, 131, 255, 0.22));
  box-shadow: 0 0 0 6px rgba(142, 214, 239, 0.08);
}

.signup-card,
.feature-card {
  border: 1px solid var(--card-border);
  background: linear-gradient(180deg, rgba(17, 31, 47, 0.94), rgba(8, 17, 28, 0.92));
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
}

.signup-card {
  border-radius: var(--radius-xl);
  padding: 28px;
  scroll-margin-top: 24px;
}

.signup-card h2,
.feature-card h3 {
  margin: 0;
  font-size: 1.65rem;
  line-height: 1.1;
}

.signup-card p {
  margin: 14px 0 0;
  color: var(--muted);
}

.signup-form {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
}

.signup-form label {
  display: block;
  color: rgba(237, 244, 255, 0.88);
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.signup-form__hint {
  color: var(--muted);
  font-weight: 500;
}

.signup-form input {
  width: 100%;
  min-height: 54px;
  padding: 0 16px;
  border: 1px solid rgba(193, 219, 255, 0.16);
  border-radius: 16px;
  color: var(--text);
  background: rgba(4, 10, 16, 0.7);
  outline: none;
  transition:
    border-color 180ms ease,
    transform 180ms ease,
    box-shadow 180ms ease;
}

.signup-form input::placeholder {
  color: rgba(237, 244, 255, 0.4);
}

.signup-form input:focus {
  border-color: rgba(142, 214, 239, 0.72);
  box-shadow: 0 0 0 5px rgba(142, 214, 239, 0.12);
  transform: translateY(-1px);
}

.signup-form button {
  min-height: 54px;
  border: 0;
  border-radius: 16px;
  color: var(--accent-contrast);
  font-weight: 800;
  background: linear-gradient(135deg, #b6e1fb, #79c7ee);
  box-shadow: 0 18px 32px rgba(88, 131, 255, 0.24);
  cursor: pointer;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    filter 180ms ease;
}

.signup-form button:hover {
  transform: translateY(-1px);
  filter: brightness(1.02);
}

.signup-form button:active {
  transform: translateY(0);
}

.signup-note,
.signup-status {
  font-size: 0.94rem;
}

.signup-note {
  margin-top: 16px !important;
}

.signup-status {
  min-height: 1.4em;
  margin-top: 12px !important;
  color: #cfe7ff;
}

.site-footer {
  display: flex;
  justify-content: center;
  padding: 28px 0 8px;
}

.site-footer__text {
  margin: 0;
  padding: 12px 18px;
  border: 1px solid rgba(170, 199, 235, 0.14);
  border-radius: 999px;
  color: rgba(237, 244, 255, 0.78);
  background: rgba(8, 17, 28, 0.58);
  backdrop-filter: blur(18px);
  text-align: center;
  font-size: 0.92rem;
}

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

.site-footer__text a:hover {
  text-decoration: underline;
}

.site-footer__text span {
  margin: 0 6px;
  color: rgba(237, 244, 255, 0.55);
}

.signup-status[data-state="error"] {
  color: #ffb3b3;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 26px;
}

.feature-card {
  border-radius: var(--radius-lg);
  padding: 22px;
}

.feature-card__kicker {
  margin-bottom: 14px;
}

.feature-card p {
  margin: 12px 0 0;
  color: var(--muted);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 960px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    border-radius: 28px;
  }

  .site-header__nav {
    gap: 14px 18px;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 10px;
  }

  .hero h1 {
    max-width: 13ch;
  }

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

@media (max-width: 640px) {
  .shell {
    width: min(calc(100% - 24px), var(--max-width));
    padding: 28px 0 48px;
  }

  .signup-card,
  .feature-card {
    padding: 20px;
  }

  .hero h1 {
    font-size: clamp(2.5rem, 13vw, 4rem);
  }

  .lede {
    font-size: 1rem;
  }
}