:root {
  color-scheme: dark;
  --background: #081827;
  --panel: #102838;
  --text: #edf6f8;
  --muted: #afc3cd;
  --accent: #67e8d1;
  --line: #294451;
  font-family: Manrope, sans-serif;
  color: var(--text);
  background: var(--background);
}

* { box-sizing: border-box; }
body { margin: 0; line-height: 1.65; }
a { color: var(--accent); text-underline-offset: .22em; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
.shell { width: min(100% - 48px, 960px); margin-inline: auto; }
.header, .footer { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding-block: 24px; }
.header { border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; gap: 12px; align-items: center; color: var(--text); text-decoration: none; font-weight: 800; }
.brand img { width: 32px; height: 32px; }
.language { padding: 10px 0; }
.skip-link { position: absolute; top: -100px; left: 16px; padding: 12px; background: var(--panel); z-index: 1; }
.skip-link:focus { top: 12px; }
main { padding-block: 36px 24px; }
.intro { max-width: 700px; }
.eyebrow { color: var(--accent); font: 500 .75rem/1.5 'IBM Plex Mono', monospace; letter-spacing: .08em; text-transform: uppercase; }
h1, h2 { font-family: Sora, sans-serif; line-height: 1.18; letter-spacing: -.04em; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); margin-block: 18px 24px; }
.lead { color: var(--muted); font-size: 1.12rem; max-width: 62ch; }
.account-note { margin-top: 28px; padding: 16px 20px; border-left: 3px solid var(--accent); background: var(--panel); }
.steps { padding: 0; margin: 40px 0 20px; list-style: none; counter-reset: step; }
.step { display: grid; grid-template-columns: 48px minmax(0, 1fr); gap: 24px; padding: 30px 0; border-top: 1px solid var(--line); counter-increment: step; }
.step::before { content: counter(step); display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; background: var(--accent); color: var(--background); font: 700 1.1rem/1 Sora, sans-serif; box-shadow: 0 4px 0 #21665e; }
.step + .step::before { background: var(--text); box-shadow: 0 4px 0 #6c818c; }
h2 { font-size: clamp(1.35rem, 3vw, 1.8rem); margin: 7px 0 14px; }
.step p { margin-block: 0 20px; max-width: 64ch; color: var(--muted); }
.step strong { color: var(--text); }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 14px; min-height: 52px; padding: 12px 24px; border: 1px solid var(--accent); border-radius: 12px; background: var(--accent); color: var(--background); font-weight: 800; text-align: center; text-decoration: none; }
.button:hover { background: #a0f4e4; }
.button-secondary { background: var(--panel); color: var(--text); border-color: var(--line); }
.button-secondary:hover { background: #1b3d4d; }
.step .step-note { margin: 16px 0 0; font-size: .87rem; }
.help { margin-block: 16px 36px; padding: 24px; background: var(--panel); border-radius: 16px; }
.help h2 { margin-top: 0; font-size: 1.2rem; }
details { border-bottom: 1px solid var(--line); padding-block: 15px; }
details:last-child { border-bottom: 0; }
summary { cursor: pointer; font-weight: 700; }
details p { color: var(--muted); margin-bottom: 0; }
.browser-option { color: var(--muted); }
.footer { border-top: 1px solid var(--line); font-size: .85rem; color: var(--muted); flex-wrap: wrap; }
.footer nav { display: flex; flex-wrap: wrap; gap: 20px; }
@media (min-width: 780px) {
  .steps { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; }
  .step { grid-template-columns: 36px minmax(0, 1fr); gap: 16px; }
  .step::before { width: 34px; height: 34px; }
  .step h2 { font-size: 1.4rem; margin-top: 4px; }
}
@media (max-width: 540px) {
  .shell { width: calc(100% - 32px); }
  .header { gap: 16px; padding-block: 16px; }
  .brand { gap: 8px; font-size: .9rem; }
  .language { font-size: .85rem; }
  main { padding-top: 32px; }
  .lead { font-size: 1rem; }
  .step { grid-template-columns: 34px minmax(0, 1fr); gap: 14px; padding-block: 24px; }
  .step::before { width: 32px; height: 32px; font-size: .9rem; }
  .step h2 { margin-top: 2px; }
  .button { width: 100%; padding-inline: 14px; }
  .help { padding: 20px; }
}