:root {
  --grouped-bg: #f2f2f7;
  --bubble: #ffffff;
  --label: #000000;
  --secondary: #3a3a3c;
  --separator: rgba(60, 60, 67, 0.12);
  --tint: #000000;
  --fill: rgba(120, 120, 128, 0.12);
  --focus: #000000;
  --wash-a: rgb(82, 199, 140);
  --wash-b: rgb(158, 97, 255);
  --radius: 12px;
  --max: 480px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display",
    "Helvetica Neue", Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --grouped-bg: #000000;
    --bubble: #1c1c1e;
    --label: #ffffff;
    --secondary: #c7c7cc;
    --separator: rgba(84, 84, 88, 0.65);
    --tint: #ffffff;
    --fill: rgba(120, 120, 128, 0.24);
    --focus: #ffffff;
    --wash-a: rgb(56, 148, 107);
    --wash-b: rgb(140, 89, 242);
  }
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--label);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.35;
  background: var(--grouped-bg);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--label);
}

a:hover {
  opacity: 0.75;
}

a:focus-visible,
button:focus-visible,
.button-row:focus-visible,
.nav-bar-side:focus-visible {
  opacity: 1;
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 10;
  padding: 0.65rem 0.9rem;
  border-radius: 8px;
  background: var(--bubble);
  color: var(--label);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-150%);
  transition: transform 0.15s ease;
}

.skip-link:focus {
  transform: translateY(0);
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

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

.content:focus {
  outline: none;
}

/* —— Ambient wash (mirrors AmbientColorWash) —— */
.wash {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background: var(--grouped-bg);
}

.wash-spot {
  position: absolute;
  left: 50%;
  top: 0;
  border-radius: 50%;
  filter: blur(70px);
  will-change: transform;
  opacity: 0.22;
}

.wash-spot-a {
  width: 440px;
  height: 360px;
  margin-left: -220px;
  background: var(--wash-a);
}

.wash-spot-b {
  width: 400px;
  height: 320px;
  margin-left: -200px;
  background: var(--wash-b);
  opacity: 0.21;
  filter: blur(75px);
}

@media (prefers-color-scheme: dark) {
  .wash-spot {
    opacity: 0.28;
  }

  .wash-spot-b {
    opacity: 0.26;
  }
}

@media (prefers-reduced-motion: reduce) {
  .wash-spot {
    transform: translate3d(0, 220px, 0) !important;
  }

  .wash-spot-b {
    transform: translate3d(40px, 260px, 0) !important;
  }
}

.page {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* —— App-like chrome —— */
.nav-bar {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0.5rem 1rem;
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  background: color-mix(in srgb, var(--grouped-bg) 72%, transparent);
}

.nav-bar-title {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.nav-bar-nav {
  position: absolute;
  top: 50%;
  right: 1rem;
  transform: translateY(-50%);
}

.nav-bar-side {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.35rem 0.25rem;
  font-size: 17px;
  font-weight: 400;
  text-decoration: none;
  color: var(--label);
}

.nav-bar-side:hover {
  opacity: 0.55;
}

.content {
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 0.5rem 1rem 3rem;
  flex: 1;
}

.brand-mark {
  display: block;
  width: 300px;
  height: 300px;
  margin: 0.75rem auto 1rem;
  border-radius: 66px;
  object-fit: cover;
  animation: brand-spin 28s linear infinite;
}

@keyframes brand-spin {
  to {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .brand-mark {
    animation: none;
  }
}

.screen-title {
  margin: 0.25rem 0 1.25rem;
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  text-align: center;
}

.lead {
  margin: -0.5rem 0 1.5rem;
  color: var(--secondary);
  font-size: 15px;
  line-height: 1.4;
  text-align: center;
}

/* Inset grouped sections */
.group {
  background: var(--bubble);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 2rem;
}

.group + .group-footer,
.group-footer {
  margin: -1.35rem 1rem 2rem;
  font-size: 13px;
  line-height: 1.35;
  color: var(--secondary);
}

.group-header {
  margin: 0 1rem 0.45rem;
  font-size: 13px;
  font-weight: 400;
  color: var(--secondary);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.row {
  display: block;
  padding: 0.85rem 1rem;
  text-decoration: none;
  color: inherit;
  background: transparent;
  border: 0;
  width: 100%;
  text-align: left;
  font: inherit;
}

.row + .row {
  border-top: 0.5px solid var(--separator);
  margin-left: 1rem;
  padding-left: 0;
  width: calc(100% - 1rem);
}

.row-title {
  margin: 0;
  font-size: 17px;
  font-weight: 400;
  letter-spacing: -0.02em;
}

.row-subtitle {
  margin: 0.2rem 0 0;
  font-size: 15px;
  color: var(--secondary);
  line-height: 1.35;
}

.row-chevron {
  color: var(--secondary);
  font-size: 14px;
  margin-top: 0.15rem;
}

.button-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  width: 100%;
  min-height: 44px;
  padding: 0.95rem 1rem;
  border: 0;
  background: transparent;
  color: var(--label);
  font: inherit;
  font-size: 17px;
  font-weight: 400;
  text-decoration: none;
  cursor: pointer;
  text-align: center;
}

.button-row + .button-row {
  border-top: 0.5px solid var(--separator);
}

.button-row:hover {
  background: var(--fill);
}

.button-row-primary {
  font-weight: 600;
}

.stack-note {
  margin: 0;
  padding: 0.85rem 1rem;
  font-size: 15px;
  color: var(--secondary);
  line-height: 1.4;
}

.stack-note + .stack-note {
  border-top: 0.5px solid var(--separator);
  margin-left: 1rem;
  padding-left: 0;
  width: calc(100% - 1rem);
  box-sizing: content-box;
}

.legal {
  background: var(--bubble);
  border-radius: var(--radius);
  padding: 1.1rem 1rem 1.35rem;
  margin-bottom: 2rem;
}

.legal .updated {
  margin: 0 0 1.1rem;
  font-size: 13px;
  color: var(--secondary);
}

.legal h2 {
  margin: 1.35rem 0 0.4rem;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.legal p,
.legal li {
  margin: 0.35rem 0 0;
  font-size: 15px;
  color: var(--secondary);
  line-height: 1.4;
}

.legal ul {
  margin: 0.4rem 0 0;
  padding-left: 1.15rem;
}

.legal a {
  color: var(--label);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.site-footer {
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 0 1rem 2rem;
  font-size: 13px;
  color: var(--secondary);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.site-footer a {
  color: var(--label);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.site-footer a:hover {
  opacity: 0.75;
}