:root {
  color-scheme: light dark;
  --background: #f6f7f9;
  --surface: #ffffff;
  --text: #1c1d20;
  --secondary: #656970;
  --border: #dfe1e5;
  --accent: #e8382b;
  --accent-pressed: #c82920;
  --accent-text: #ffffff;
  --focus: #1768d5;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  font-synthesis: none;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #15171b;
    --surface: #1d2025;
    --text: #f4f4f5;
    --secondary: #afb2b8;
    --border: #34383f;
    --accent: #ff5144;
    --accent-pressed: #ff7167;
    --focus: #73a9ff;
  }
}

* {
  box-sizing: border-box;
}

html {
  background: var(--background);
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--background);
  color: var(--text);
  line-height: 1.55;
  letter-spacing: 0;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration-thickness: 2px;
}

a:focus-visible,
summary:focus-visible {
  border-radius: 4px;
  outline: 3px solid color-mix(in srgb, var(--focus) 55%, transparent);
  outline-offset: 3px;
}

.shell {
  width: min(100% - 40px, 980px);
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 85%, transparent);
  background: color-mix(in srgb, var(--background) 88%, transparent);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  backdrop-filter: blur(18px) saturate(1.3);
}

.nav {
  display: flex;
  min-height: 58px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 15px;
  font-weight: 650;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 7px;
  background: var(--accent);
  color: #ffffff;
  font-size: 25px;
  font-weight: 500;
  line-height: 1;
}

.brand span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  flex: 0 0 auto;
  gap: 22px;
}

.nav-links a {
  color: var(--secondary);
  font-size: 14px;
  font-weight: 550;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--text);
}

.hero {
  min-height: min(650px, calc(100vh - 58px));
  padding-block: clamp(72px, 12vh, 120px) 82px;
  text-align: center;
}

.app-mark {
  width: 112px;
  height: 112px;
  margin-bottom: 26px;
  filter: drop-shadow(0 14px 20px rgba(0, 0, 0, 0.16));
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 720;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  font-size: clamp(42px, 8vw, 72px);
  line-height: 1.02;
  letter-spacing: 0;
}

.lede {
  max-width: 660px;
  margin: 22px auto 0;
  color: var(--secondary);
  font-size: 21px;
  line-height: 1.45;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 9px 16px;
  background: var(--surface);
  color: var(--text);
  font-size: 15px;
  font-weight: 620;
  text-decoration: none;
}

.button:hover {
  border-color: color-mix(in srgb, var(--text) 28%, var(--border));
  text-decoration: none;
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-text);
}

.button.primary:hover {
  border-color: var(--accent-pressed);
  background: var(--accent-pressed);
}

.details-band {
  border-block: 1px solid var(--border);
  background: var(--surface);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 42px;
  padding-block: 68px 74px;
}

.feature-grid article {
  min-width: 0;
}

.symbol {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  margin-bottom: 18px;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border));
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 9%, var(--surface));
  color: var(--accent);
  font-size: 14px;
  font-weight: 750;
}

.symbol.shield {
  font-size: 18px;
}

.feature-grid h2 {
  margin: 0 0 7px;
  font-size: 18px;
}

.feature-grid p {
  margin: 0;
  color: var(--secondary);
  font-size: 15px;
}

.article {
  max-width: 760px;
  padding-block: 78px 96px;
}

.article-header {
  padding-bottom: 34px;
  border-bottom: 1px solid var(--border);
}

.article h1 {
  font-size: clamp(40px, 8vw, 58px);
}

.article .lede {
  max-width: 680px;
  margin-inline: 0;
}

.article-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.article section {
  margin-top: 48px;
}

.article h2 {
  margin: 0 0 14px;
  font-size: 22px;
  line-height: 1.25;
}

.article p,
.article li {
  font-size: 16px;
}

.article p {
  margin: 0;
}

.steps {
  display: grid;
  gap: 12px;
  margin: 20px 0 0;
  padding-left: 28px;
}

.steps li {
  padding-left: 7px;
}

.steps li::marker {
  color: var(--accent);
  font-weight: 750;
}

details {
  border-top: 1px solid var(--border);
}

details:last-child {
  border-bottom: 1px solid var(--border);
}

summary {
  position: relative;
  padding: 18px 32px 18px 0;
  cursor: pointer;
  font-size: 16px;
  font-weight: 650;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  position: absolute;
  top: 18px;
  right: 2px;
  color: var(--secondary);
  content: "+";
  font-size: 22px;
  font-weight: 400;
  line-height: 1;
}

details[open] summary::after {
  content: "−";
}

details p {
  padding: 0 32px 20px 0;
  color: var(--secondary);
}

.contact {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.contact h2 {
  font-size: 18px;
}

.footer {
  display: flex;
  min-height: 100px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--secondary);
  font-size: 13px;
}

.footer p {
  margin: 0;
}

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

.footer a {
  color: var(--secondary);
}

@media (max-width: 680px) {
  .shell {
    width: min(100% - 32px, 980px);
  }

  .hero {
    min-height: 0;
    padding-block: 64px 70px;
  }

  .app-mark {
    width: 96px;
    height: 96px;
  }

  .lede {
    font-size: 18px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-block: 52px 58px;
  }

  .article {
    padding-block: 58px 72px;
  }

  .article section {
    margin-top: 40px;
  }

  .footer {
    min-height: 120px;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 10px;
  }
}

@media (max-width: 440px) {
  .brand span {
    max-width: 145px;
  }

  .nav-links {
    gap: 14px;
  }

  .actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }
}

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