:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --surface: #f5f5f5;
  --text: #111111;
  --muted: #5d5d5d;
  --line: #d6d6d6;
  --inverse: #ffffff;
  --inverse-bg: #111111;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e0e0e;
    --surface: #181818;
    --text: #f4f4f4;
    --muted: #b5b5b5;
    --line: #3b3b3b;
    --inverse: #111111;
    --inverse-bg: #f4f4f4;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-thickness: 0.14em;
}

a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--text);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -5rem;
  z-index: 10;
  padding: 0.7rem 1rem;
  background: var(--inverse-bg);
  color: var(--inverse);
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  border-bottom: 1px solid var(--line);
}

.nav,
.container {
  width: min(70rem, calc(100% - 2rem));
  margin-inline: auto;
}

.nav {
  min-height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  font-size: 1.2rem;
  font-weight: 750;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.7rem 1.2rem;
  font-size: 0.94rem;
}

.nav-links a[aria-current="page"] {
  font-weight: 700;
  text-decoration-thickness: 0.14em;
}

main {
  min-height: 70vh;
}

.hero {
  padding-block: clamp(4.5rem, 10vw, 8rem);
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 1rem;
  font-size: 0.84rem;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.14;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(3rem, 9vw, 6.8rem);
}

.hero-copy {
  max-width: 42rem;
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: clamp(1.1rem, 2.1vw, 1.4rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.15rem;
  border: 1px solid var(--text);
  border-radius: 999px;
  background: var(--inverse-bg);
  color: var(--inverse);
  font-weight: 700;
  text-decoration: none;
}

.button.secondary {
  background: transparent;
  color: var(--text);
}

.section {
  padding-block: clamp(3.5rem, 8vw, 6.5rem);
  border-bottom: 1px solid var(--line);
}

.section h2,
.policy h1 {
  max-width: 18ch;
  margin: 0 0 1.5rem;
  font-size: clamp(2rem, 5vw, 3.7rem);
}

.section-intro {
  max-width: 43rem;
  margin: -0.4rem 0 2rem;
  color: var(--muted);
  font-size: 1.08rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  padding: 1.4rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--surface);
}

.card h3 {
  margin: 0 0 0.55rem;
  font-size: 1.18rem;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.steps {
  padding: 0;
  list-style: none;
  counter-reset: steps;
}

.steps li {
  counter-increment: steps;
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1rem;
  padding-block: 1.15rem;
  border-top: 1px solid var(--line);
}

.steps li::before {
  content: "0" counter(steps);
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.steps strong {
  display: block;
  margin-bottom: 0.25rem;
}

.steps p {
  margin: 0;
  color: var(--muted);
}

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

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

summary {
  cursor: pointer;
  padding: 1.1rem 0;
  font-weight: 700;
}

details p {
  max-width: 48rem;
  margin: 0 0 1.3rem;
  color: var(--muted);
}

.support-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: end;
}

.tip {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

.tip img {
  display: block;
  width: 104px;
  height: 104px;
  margin: 0 auto 0.55rem;
  border-radius: 0.55rem;
}

.policy {
  width: min(48rem, calc(100% - 2rem));
  margin-inline: auto;
  padding-block: clamp(3.5rem, 8vw, 6rem);
}

.policy .updated {
  margin: -0.8rem 0 3rem;
  color: var(--muted);
}

.policy h2 {
  margin: 2.5rem 0 0.65rem;
  font-size: 1.45rem;
}

.policy h3 {
  margin: 1.7rem 0 0.5rem;
  font-size: 1.08rem;
}

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

.policy strong {
  color: var(--text);
}

.notice {
  padding: 1rem 1.2rem;
  border-left: 4px solid var(--text);
  background: var(--surface);
}

.site-footer {
  padding-block: 2.2rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-inner p {
  margin: 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding-block: 1rem;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .grid {
    grid-template-columns: 1fr;
  }

  .support-row {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .tip {
    width: max-content;
    max-width: 100%;
    text-align: left;
  }

  .tip img {
    margin-left: 0;
  }
}

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