:root {
  --bg: #0f1115;
  --panel: #171b22;
  --text: #f3f5f7;
  --muted: #b8c0cc;
  --border: rgba(255,255,255,0.08);
  --problem: #77d0ff;
  --beauty: #ff9bcb;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #1b2030 0%, var(--bg) 55%);
  color: var(--text);
}
.shell {
  min-height: 100vh;
  max-width: 860px;
  margin: 0 auto;
  padding: 24px;
}
.topbar {
  margin-bottom: 24px;
}
.brand-lockup { text-decoration: none; }
.brand-chip {
  display: inline-block;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  color: var(--text);
  border: 1px solid var(--border);
  font-weight: 600;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 28px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}
.hero { padding-top: 36px; padding-bottom: 36px; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  color: var(--muted);
  margin: 0 0 12px;
}
h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.05;
  margin: 0 0 12px;
}
h2 { margin: 0 0 6px; font-size: 1.1rem; }
.subtext, .muted {
  color: var(--muted);
  line-height: 1.6;
}
.code-form {
  margin-top: 24px;
  display: grid;
  gap: 12px;
}
label { font-weight: 600; }
input {
  width: 100%;
  padding: 16px 18px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  font-size: 1rem;
}
button, .cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 18px;
  border-radius: 16px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  font-weight: 700;
  color: #0d0f13;
}
.theme-problem button,
.theme-problem .cta { background: var(--problem); }
.theme-beauty button,
.theme-beauty .cta { background: var(--beauty); }
.stack-lg > * + * { margin-top: 20px; }
.stack-md > * + * { margin-top: 14px; }
.link-card {
  display: flex;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
  padding: 18px;
  border-radius: 18px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
}
.standalone { width: fit-content; }
@media (max-width: 640px) {
  .shell { padding: 16px; }
  .card { padding: 20px; }
  .link-card { flex-direction: column; align-items: stretch; }
  .standalone, .cta { width: 100%; }
}