:root {
  --bg: #fbfbfd;
  --bg-elevated: #ffffff;
  --text: #1b1b1f;
  --text-muted: #5f6069;
  --text-subtle: #86868b;
  --border: #e6e6ea;
  --accent: #4a4ae0;
  --accent-hover: #3a3ac4;
  --shadow: 0 1px 2px rgba(20, 20, 40, 0.04), 0 8px 24px rgba(20, 20, 40, 0.06);
  --radius: 18px;
  --measure: 68ch;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0c10;
    --bg-elevated: #15151b;
    --text: #f4f4f7;
    --text-muted: #a9aab4;
    --text-subtle: #7c7d88;
    --border: #26262f;
    --accent: #9a9aff;
    --accent-hover: #b4b4ff;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.3);
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* The hero sits on a soft radial wash so the page has depth without imagery. */
body::before {
  content: "";
  position: fixed;
  inset: 0 0 auto 0;
  height: 60vh;
  background: radial-gradient(
    ellipse 80% 100% at 50% 0%,
    color-mix(in srgb, var(--accent) 12%, transparent),
    transparent 70%
  );
  pointer-events: none;
  z-index: -1;
}

.shell {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
}

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

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

/* Header */

.masthead {
  padding: 28px 0;
}

.wordmark {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
}

.wordmark:hover {
  text-decoration: none;
  color: var(--accent);
}

/* Hero */

.hero {
  padding: 72px 0 56px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.5rem, 7vw, 3.75rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 700;
}

.hero .lede {
  margin: 22px 0 0;
  max-width: 46ch;
  font-size: clamp(1.125rem, 2.5vw, 1.3125rem);
  line-height: 1.5;
  color: var(--text-muted);
}

/* Sections */

.section {
  padding: 40px 0;
}

.section-label {
  margin: 0 0 20px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-subtle);
}

/* App cards */

.apps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.app {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.app h3 {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.app p {
  margin: 8px 0 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.badge {
  display: inline-block;
  margin-top: 16px;
  padding: 4px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

/* Privacy callout */

.callout {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
}

.callout-copy {
  flex: 1 1 280px;
}

.callout h2 {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.callout p {
  margin: 6px 0 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.button {
  display: inline-block;
  padding: 11px 20px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 600;
  white-space: nowrap;
  transition: background-color 0.15s ease, transform 0.15s ease;
}

.button:hover {
  background: var(--accent-hover);
  color: #fff;
  text-decoration: none;
  transform: translateY(-1px);
}

@media (prefers-color-scheme: dark) {
  .button {
    color: #0c0c10;
  }

  .button:hover {
    color: #0c0c10;
  }
}

/* Footer */

.footer {
  margin-top: 64px;
  padding: 28px 0 48px;
  border-top: 1px solid var(--border);
  font-size: 0.875rem;
  color: var(--text-subtle);
}

.footer .shell {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: center;
  justify-content: space-between;
}

.footer nav {
  display: flex;
  gap: 20px;
}

/* Long-form legal pages */

.doc {
  /* Horizontal padding is repeated from .shell, which this rule would otherwise
     override, leaving text against the screen edge on narrow viewports. */
  padding: 48px 24px 8px;
  max-width: calc(var(--measure) + 48px);
}

.doc h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -0.025em;
  font-weight: 700;
}

.doc .meta {
  margin: 14px 0 0;
  font-size: 0.875rem;
  color: var(--text-subtle);
}

.doc .summary {
  margin: 32px 0 0;
  padding: 22px 24px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.doc .summary p {
  margin: 0;
  font-size: 1rem;
  color: var(--text);
}

.doc h2 {
  margin: 44px 0 0;
  font-size: 1.1875rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.doc p,
.doc li {
  color: var(--text-muted);
}

.doc p {
  margin: 12px 0 0;
}

.doc ul {
  margin: 12px 0 0;
  padding-left: 22px;
}

.doc li {
  margin: 7px 0;
}

.doc strong {
  color: var(--text);
  font-weight: 600;
}

.back {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 0.9375rem;
  font-weight: 500;
}

/* Contact form */

.form {
  margin: 32px 0 0;
  display: grid;
  gap: 18px;
}

.field {
  display: grid;
  gap: 7px;
}

.field label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
}

.field input,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  font: inherit;
  font-size: 1rem;
  color: var(--text);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field textarea {
  resize: vertical;
  min-height: 140px;
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--text-subtle);
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}

.field-hidden {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 18px;
  margin-top: 4px;
}

.button[type="submit"] {
  border: 0;
  cursor: pointer;
  font-family: inherit;
}

.button[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.form-status {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.form-status.is-ok {
  color: #17803d;
  font-weight: 500;
}

.form-status.is-error {
  color: #c02626;
  font-weight: 500;
}

@media (prefers-color-scheme: dark) {
  .form-status.is-ok {
    color: #5fd68b;
  }

  .form-status.is-error {
    color: #ff8f8f;
  }
}