:root {
  color-scheme: dark;
  --bg: #09090b;
  --dot: #27272a;
  --border: #27272a;
  --text: #fafafa;
  --muted: #a1a1aa;
  --surface: #18181b;
  --shadow: 0 18px 45px -18px rgba(15, 23, 42, 0.28);
  --shadow-hover: 0 30px 70px -24px rgba(15, 23, 42, 0.34);
  --hero-glow: rgba(99, 102, 241, 0.07);
  --desktop-ring: rgba(255, 255, 255, 0.1);
  --desktop-bar-border: rgba(39, 39, 42, 0.5);
  --desktop-bar-bg: rgba(24, 24, 27, 0.8);
  --phone-shell: #000000;
  --dot-opacity: 0.45;
  --font-sans: Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
}

body {
  margin: 0;
  background: var(--bg);
}

img {
  display: block;
  max-width: 100%;
}

.page {
  position: relative;
  overflow: hidden;
  min-height: 100vh;
  background: var(--bg);
}

.page::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--dot) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: var(--dot-opacity);
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  left: 50%;
  top: 208px;
  width: 320px;
  height: 320px;
  transform: translateX(-50%);
  border-radius: 999px;
  background: var(--hero-glow);
  filter: blur(110px);
  pointer-events: none;
}

.container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px 20px 0;
}

.masthead {
  padding-bottom: 16px;
  text-align: center;
}

.masthead-label {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.hero {
  position: relative;
  z-index: 1;
  max-width: 896px;
  margin: 0 auto;
  padding: 96px 16px 64px;
  text-align: center;
}

.hero-meta {
  margin: 0 0 20px;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero-title {
  margin: 0 0 24px;
  font-size: clamp(3rem, 8vw, 5.75rem);
  font-weight: 800;
  letter-spacing: -0.06em;
  line-height: 0.92;
}

.hero-description {
  max-width: 720px;
  margin: 0 auto;
  font-size: 18px;
  line-height: 1.8;
  color: var(--muted);
}

.lead-section {
  position: relative;
  z-index: 2;
  max-width: 1120px;
  margin: 0 auto 96px;
  padding: 0 16px;
}

.lead-figure {
  margin: 0;
}

.desktop-frame,
.phone-frame {
  transition:
    transform 500ms ease,
    box-shadow 500ms ease;
}

.desktop-frame:hover,
.phone-frame:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.desktop-frame {
  overflow: hidden;
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow);
  outline: 1px solid var(--desktop-ring);
}

.desktop-bar {
  height: 40px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  border-bottom: 1px solid var(--desktop-bar-border);
  background: var(--desktop-bar-bg);
  backdrop-filter: blur(12px);
}

.desktop-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
}

.desktop-dot--red {
  background: #f87171;
}

.desktop-dot--amber {
  background: #fbbf24;
}

.desktop-dot--green {
  background: #4ade80;
}

.desktop-frame img {
  width: 100%;
  height: auto;
}

.phone-frame {
  position: relative;
  width: 100%;
  max-width: 320px;
  margin: 0 auto;
  overflow: hidden;
  border: 10px solid var(--phone-shell);
  border-radius: 40px;
  background: var(--phone-shell);
  box-shadow: var(--shadow);
}

.phone-notch {
  position: absolute;
  top: 12px;
  left: 50%;
  width: 112px;
  height: 24px;
  transform: translateX(-50%);
  border-radius: 999px;
  background: #09090b;
  z-index: 1;
}

.phone-frame img {
  width: 100%;
  height: auto;
}

.feature-caption {
  margin-top: 20px;
  text-align: left;
}

.feature-title {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.features {
  position: relative;
  z-index: 1;
  max-width: 1216px;
  margin: 0 auto;
  padding: 0 16px;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.feature-slot {
  margin: 0;
}

.empty-state {
  min-height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 16px 48px;
}

.empty-title {
  margin: 0;
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.empty-description {
  max-width: 640px;
  margin: 16px auto 0;
  color: var(--muted);
  line-height: 1.8;
}

.footer {
  margin-top: 96px;
  border-top: 1px solid var(--border);
  padding: 48px 16px;
  text-align: center;
}

.footer-title {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.footer-note {
  margin: 8px 0 0;
  font-size: 14px;
  color: var(--muted);
}

.footer-project-link {
  display: inline-flex;
  align-items: center;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  text-decoration: underline;
  text-decoration-color: var(--border);
  text-underline-offset: 4px;
}

.footer-project-link:hover {
  color: var(--text);
}

@media (min-width: 640px) {
  .container {
    padding: 32px 32px 0;
  }

  .hero-glow {
    width: 416px;
    height: 416px;
  }
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .feature-slot--wide-feature {
    grid-column: span 7;
  }

  .feature-slot--secondary-feature {
    grid-column: span 6;
  }

  .feature-slot--mobile-feature {
    grid-column: span 5;
  }

  .feature-slot--supporting-utility {
    grid-column: span 6;
  }
}

@media (min-width: 1024px) {
  .feature-slot--wide-feature {
    grid-column: span 8;
  }

  .feature-slot--secondary-feature {
    grid-column: span 7;
  }

  .feature-slot--mobile-feature {
    grid-column: span 4;
  }

  .feature-slot--supporting-utility {
    grid-column: span 4;
  }
}