:root {
  --bg: #000000;
  --panel: rgba(255, 255, 255, 0.04);
  --panel-strong: rgba(255, 255, 255, 0.08);
  --line: rgba(255, 255, 255, 0.12);
  --line-strong: rgba(255, 255, 255, 0.2);
  --text: #f5f5f7;
  --muted: #a1a1a6;
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.48);
  --radius-xl: 40px;
  --radius-lg: 28px;
  --radius-md: 20px;
  --max-width: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 50% 0%, rgba(83, 83, 88, 0.22), transparent 24%),
    linear-gradient(180deg, #09090b 0%, #000000 100%);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif;
  line-height: 1.4;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.page-shell {
  width: min(calc(100% - 24px), var(--max-width));
  margin: 0 auto;
  padding: 14px 0 72px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  position: sticky;
  top: 10px;
  z-index: 20;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(22, 22, 23, 0.72);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 999px;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button:disabled {
  opacity: 0.7;
  cursor: wait;
  transform: none;
}

.button-primary {
  color: #000;
  background: #f5f5f7;
}

.button-secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--line);
}

.hero {
  padding: 44px 0 20px;
  text-align: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero h1,
.contact h2,
.screen-headline,
.capability strong {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", sans-serif;
  letter-spacing: -0.05em;
}

.brand-logo {
  display: block;
  width: 158px;
  height: auto;
}

.hero h1 {
  max-width: 11ch;
  margin: 0 auto;
  font-size: clamp(3rem, 14vw, 7rem);
  font-weight: 600;
  line-height: 0.92;
}

.hero-text,
.capability p,
.form-note,
label,
.screen-card span {
  color: var(--muted);
}

.hero-text {
  max-width: 38rem;
  margin: 20px auto 0;
  font-size: 1.04rem;
  line-height: 1.5;
}

.hero-actions {
  display: grid;
  gap: 12px;
  width: min(100%, 340px);
  margin: 26px auto 0;
}

.hero-device {
  margin-top: 42px;
}

.device-shell {
  position: relative;
  max-width: 980px;
  margin: 0 auto;
  padding: 14px;
  border-radius: 38px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: linear-gradient(180deg, rgba(28, 28, 30, 0.92), rgba(10, 10, 12, 0.96));
  box-shadow: var(--shadow);
}

.device-screen {
  min-height: 420px;
  padding: 28px 24px 24px;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background:
    radial-gradient(circle at 50% 10%, rgba(255, 255, 255, 0.1), transparent 16%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.015));
}

.screen-headline {
  max-width: 12ch;
  margin: 0 auto;
  font-size: clamp(2rem, 8vw, 4.4rem);
  font-weight: 600;
  line-height: 0.94;
}

.screen-cards {
  display: grid;
  gap: 10px;
  margin-top: 34px;
}

.screen-card,
.capability,
.contact {
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(22px) saturate(150%);
  -webkit-backdrop-filter: blur(22px) saturate(150%);
  box-shadow: var(--shadow);
}

.screen-card {
  padding: 18px 18px 16px;
  border-radius: 20px;
  text-align: left;
  background: rgba(255, 255, 255, 0.03);
  box-shadow: none;
}

.screen-card strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1rem;
  font-weight: 600;
}

.capabilities {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.capability {
  padding: 26px 22px;
  border-radius: var(--radius-lg);
  box-shadow: none;
}

.capability strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.45rem;
  font-weight: 600;
}

.capability p {
  margin: 0;
}

.contact {
  margin-top: 24px;
  padding: 30px 22px;
  border-radius: var(--radius-xl);
}

.contact h2 {
  margin: 0 0 18px;
  font-size: clamp(2rem, 9vw, 3.2rem);
  font-weight: 600;
  line-height: 0.95;
}

.contact-form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 8px;
  font-size: 0.9rem;
}

input,
textarea {
  width: 100%;
  padding: 15px 16px;
  color: var(--text);
  background: var(--panel-strong);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  outline: none;
}

input:focus,
textarea:focus {
  border-color: rgba(255, 255, 255, 0.34);
}

.form-actions {
  display: grid;
  gap: 12px;
}

.form-note {
  margin: 0;
  font-size: 0.88rem;
}

@media (min-width: 760px) {
  .page-shell {
    width: min(calc(100% - 40px), var(--max-width));
  }

  .hero-actions,
  .form-actions {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .screen-cards,
  .capabilities {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .screen-cards {
    margin-top: 180px;
  }

  .contact {
    max-width: 860px;
    margin-inline: auto;
    padding: 38px;
  }
}