:root {
  /* Product palettes from the Mac app Light/Dark switch.
   * Slot order: 1 bg · 2 surface · 3 raised · 4 muted · 5 accent */
  --cs-bg: #1c2e30;
  --cs-bg-elevated: #023a40;
  --cs-bg-panel: #061c1f;
  --cs-border: #3f4445;
  --cs-text: #e8eaed;
  --cs-text-muted: #9aa0a6;
  --cs-accent: #536b70;
  --cs-accent-muted: #3a5256;
  --cs-radius: 6px;
  --cs-font: "IBM Plex Sans", "Segoe UI", sans-serif;
}

:root[data-theme="light"] {
  --cs-bg: #f1f2eb;
  --cs-bg-elevated: #d8dad3;
  --cs-bg-panel: #a4c2a5;
  --cs-border: #566246;
  --cs-text: #1f2419;
  --cs-text-muted: #566246;
  --cs-accent: #4a4a48;
  --cs-accent-muted: #6b6b68;
}

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

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--cs-font);
  background:
    radial-gradient(
      900px 420px at 50% -10%,
      color-mix(in srgb, var(--cs-bg-elevated) 70%, transparent),
      transparent 70%
    ),
    var(--cs-bg);
  color: var(--cs-text);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

.chart-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  display: block;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.top,
.hero,
.features {
  position: relative;
  z-index: 1;
}

.top {
  display: flex;
  justify-content: flex-end;
  padding: 18px 22px 0;
}

.theme {
  display: inline-flex;
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius);
  overflow: hidden;
  background: var(--cs-bg-elevated);
}

.theme button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--cs-text-muted);
  font: inherit;
  font-size: 13px;
  font-weight: 500;
  padding: 7px 12px;
  cursor: pointer;
}

.theme button + button {
  border-left: 1px solid var(--cs-border);
}

.theme button[aria-pressed="true"] {
  background: var(--cs-bg-panel);
  color: var(--cs-text);
}

.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 24px 20px 48px;
}

.logo {
  width: min(220px, 58vw);
  height: auto;
  margin-bottom: 22px;
  filter: drop-shadow(0 10px 24px color-mix(in srgb, var(--cs-bg-panel) 80%, transparent));
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(32px, 6vw, 48px);
  font-weight: 600;
  letter-spacing: -0.03em;
}

.pitch {
  margin: 0 0 28px;
  max-width: 34rem;
  color: var(--cs-text-muted);
  font-size: 17px;
  line-height: 1.5;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 200px;
  padding: 12px 18px;
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius);
  background: var(--cs-bg-panel);
  color: var(--cs-text);
  font-weight: 500;
  text-decoration: none;
}

.btn:hover {
  border-color: var(--cs-accent);
}

.btn-primary {
  background: var(--cs-accent-muted);
  border-color: var(--cs-accent);
}

.notes {
  margin: 22px 0 0;
  font-size: 14px;
}

.notes a {
  color: var(--cs-text-muted);
  text-underline-offset: 3px;
}

.notes a:hover {
  color: var(--cs-text);
}

.privacy {
  margin: 18px 0 0;
  max-width: 34rem;
  color: var(--cs-text-muted);
  font-size: 14px;
  line-height: 1.45;
}

.features {
  width: min(880px, calc(100% - 40px));
  margin: 0 auto 72px;
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.features figure {
  margin: 0;
}

.features img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--cs-border);
  border-radius: 10px;
  background: var(--cs-bg-elevated);
}

.features figcaption {
  margin-top: 10px;
  color: var(--cs-text-muted);
  font-size: 15px;
  line-height: 1.45;
  text-align: center;
}

@media (max-width: 520px) {
  .btn {
    min-width: min(280px, 100%);
  }

  .features {
    width: min(880px, calc(100% - 32px));
    gap: 28px;
    margin-bottom: 48px;
  }
}