:root {
  color-scheme: light dark;
  --accent: #0b66c3;
  --accent-hover: #094f99;
  --bg: #ffffff;
  --fg: #1a1f2c;
  --muted: #5c6273;
  --border: rgba(0, 0, 0, .08);
  --card-bg: #f7f9fc;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1117;
    --fg: #e6e8ee;
    --muted: #9ba1b0;
    --border: rgba(255, 255, 255, .08);
    --card-bg: #151a23;
  }
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; background: var(--bg); color: var(--fg); }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2.5rem 1.25rem 3rem;
}

body > header {
  width: 100%;
  max-width: 620px;
  margin: 0 auto 2.25rem;
}

.banner {
  display: block;
  width: 100%;
  height: auto;
  border-radius: .8rem;
  box-shadow: 0 6px 28px rgba(0, 0, 0, .18);
}

main { width: 100%; max-width: 560px; text-align: center; }

h1 { font-size: 1.9rem; font-weight: 700; letter-spacing: -0.01em; margin: 0 0 1.75rem; }

.cta { margin: 0; }

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 1rem 1.75rem;
  border-radius: .5rem;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.08rem;
  letter-spacing: .01em;
  box-shadow: 0 4px 14px rgba(11, 102, 195, .3);
  transition: transform .08s ease, background .15s ease, box-shadow .15s ease;
}

.btn:hover { background: var(--accent-hover); box-shadow: 0 6px 18px rgba(11, 102, 195, .4); }
.btn:active { transform: translateY(1px); }

.steps {
  list-style: none;
  counter-reset: step;
  margin: 2.5rem 0 0;
  text-align: left;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: .75rem;
  padding: 1.4rem 1.5rem 1.4rem 1.2rem;
}

.steps li {
  position: relative;
  counter-increment: step;
  padding: .55rem 0 .55rem 2.55rem;
  font-size: .98rem;
}

.steps li + li { border-top: 1px solid var(--border); }

.steps li::before {
  content: counter(step);
  position: absolute;
  top: .65rem;
  left: 0;
  width: 1.65rem;
  height: 1.65rem;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: .85rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pink { color: #e91e63; font-weight: 600; }
.blue { color: var(--accent); font-weight: 600; }

footer {
  width: 100%;
  max-width: 560px;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: .88rem;
  color: var(--muted);
  line-height: 1.7;
}

footer address { font-style: normal; }
footer p { margin: 0; }
footer a { color: var(--accent); text-decoration: none; }
footer a:hover { text-decoration: underline; }
footer .company { font-weight: 600; color: var(--fg); font-size: .95rem; margin-bottom: .35rem; }
footer .divider { display: inline-block; width: 1px; height: .85em; background: var(--border); margin: 0 .6rem; vertical-align: middle; }
footer .support-tool { margin-top: 1rem; font-size: .78rem; opacity: .78; }
footer .support-tool a { color: var(--muted); }