:root {
  color-scheme: light;
  --background: #f6f7f9;
  --surface: #ffffff;
  --text: #17202e;
  --muted: #536074;
  --border: #dce1e8;
  --accent: #454cce;
  --tint: #edeefd;
}
body:has(#theme:checked) {
  color-scheme: dark;
  --background: #11151d;
  --surface: #1a202b;
  --text: #f0f2f8;
  --muted: #b2bdd0;
  --border: #323d50;
  --accent: #acaeff;
  --tint: #2c2d4e;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  min-height: 100vh;
  line-height: 1.6;
}
header { max-width: 1200px; margin: auto; padding: 28px 32px; display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.wordmark { color: var(--text); text-decoration: none; display: flex; align-items: center; font-size: 25px; font-weight: 750; letter-spacing: -1px; }
.brand-icon { background: var(--accent); color: var(--background); width: 30px; height: 30px; border-radius: 9px; text-align: center; line-height: 27px; margin-right: 10px; font-size: 23px; }
.brand-dot { color: var(--accent); }
.control-input { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.theme-control label { cursor: pointer; display: flex; align-items: center; gap: 10px; min-height: 44px; padding: 8px 12px; border-radius: 24px; border: 1px solid var(--border); font-size: 14px; color: var(--text); }
.switch-track { display: block; width: 28px; height: 16px; border-radius: 20px; background: var(--muted); padding: 3px; }
.switch-track::after { content: ""; display: block; width: 10px; height: 10px; border-radius: 50%; background: var(--surface); }
.control-input:checked + label .switch-track { background: var(--accent); }
.control-input:checked + label .switch-track::after { transform: translateX(12px); }
.control-input:focus-visible + label, a:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
main { max-width: 1200px; margin: auto; padding: 64px 32px 72px; }
.eyebrow { color: var(--accent); font-size: 12px; font-weight: 750; letter-spacing: 2px; margin: 0 0 20px; }
h1 { font-size: clamp(40px, 5.6vw, 72px); line-height: 1.08; letter-spacing: -2px; font-weight: 650; margin: 0; }
.intro { color: var(--muted); font-size: 19px; margin: 26px 0 40px; }
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 26px; }
.card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 28px; }
.card-icon { width: 44px; height: 44px; border-radius: 12px; background: var(--tint); color: var(--accent); display: grid; place-items: center; font-size: 26px; }
.number { font-size: 12px; color: var(--muted); letter-spacing: 1px; }
h2 { font-size: 28px; line-height: 1.25; font-weight: 650; letter-spacing: -.6px; margin: 0 0 16px; }
.card h2 { font-size: 21px; }
p { color: var(--muted); margin: 0; }
.limits { margin: 56px 0; padding: 36px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.limits .eyebrow { margin-bottom: 12px; }
.limits ul { margin: 0; padding-left: 22px; align-self: center; }
.limits li { padding: 5px 0; font-weight: 600; }
.limits li::marker { color: var(--accent); }
.limits li span { font-weight: 400; color: var(--muted); }
.steps { list-style: none; counter-reset: step; padding: 0; margin: 28px 0 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; }
.steps li { counter-increment: step; border-top: 2px solid var(--border); padding-top: 20px; }
.steps li::before { content: "0" counter(step); color: var(--accent); font-size: 13px; font-weight: 700; }
h3 { font-size: 17px; margin: 12px 0 8px; }
.steps p { font-size: 15px; }
@media (max-width: 760px) {
  header { padding: 20px; gap: 12px; }
  main { padding: 38px 20px 48px; }
  h1 { letter-spacing: -1.5px; }
  .intro { font-size: 17px; }
  .cards { grid-template-columns: 1fr; }
  .limits { grid-template-columns: 1fr; gap: 24px; margin: 36px 0; padding: 28px 0; }
  .steps { grid-template-columns: 1fr; gap: 24px; }
}