:root {
  --bg: #ffffff;
  --text: #1a1a1a;
  --muted: #5c5c5c;
  --accent: #4f46e5;
  --accent-text: #ffffff;
  --border: #d9d9d9;
  --surface: #f6f6f8;
  --error: #b42318;
  --success-bg: #ecfdf3;
  --success-text: #05603a;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121214;
    --text: #ececec;
    --muted: #a3a3a3;
    --accent: #8b85ff;
    --accent-text: #121214;
    --border: #3a3a3f;
    --surface: #1c1c20;
    --error: #ff8a80;
    --success-bg: #0f2e1f;
    --success-text: #a6f4c5;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

main {
  max-width: 40rem;
  margin: 0 auto;
  padding: 2.5rem 1rem 4rem;
}

section {
  margin-bottom: 3rem;
}

h1 {
  font-size: clamp(1.9rem, 6vw, 2.6rem);
  line-height: 1.15;
  margin: 0.25rem 0 1rem;
}

h2 {
  font-size: 1.35rem;
  margin: 0 0 0.75rem;
}

.eyebrow {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0;
}

.lead {
  font-size: 1.1rem;
}

.offer {
  font-weight: 600;
}

.signup {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
}

.field {
  margin-bottom: 1rem;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

input[type="email"],
select {
  width: 100%;
  padding: 0.7rem 0.75rem;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}

input[aria-invalid="true"],
select[aria-invalid="true"] {
  border-color: var(--error);
}

.check {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  font-weight: 400;
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.check input {
  margin-top: 0.35rem;
}

button,
.button {
  display: inline-block;
  width: 100%;
  padding: 0.85rem 1rem;
  font: inherit;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  color: var(--accent-text);
  background: var(--accent);
  border: 0;
  border-radius: 8px;
  cursor: pointer;
}

button:disabled {
  opacity: 0.6;
  cursor: wait;
}

button:focus-visible,
.button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.micro,
.small,
.note {
  color: var(--muted);
  font-size: 0.9rem;
}

.micro {
  margin: 0.6rem 0 0;
  text-align: center;
}

.error {
  color: var(--error);
  font-size: 0.9rem;
  margin: 0.35rem 0 0;
}

.form-status:empty {
  display: none;
}

.form-status {
  margin: 0.75rem 0 0;
  text-align: center;
}

.success {
  background: var(--success-bg);
  color: var(--success-text);
  border-radius: 8px;
  padding: 1rem;
  margin: 0;
}

.trap {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.steps {
  padding-left: 1.25rem;
}

.steps li {
  margin-bottom: 1rem;
}

.steps strong {
  display: block;
}

.fit {
  padding-left: 1.25rem;
}

.sample-label {
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.sample {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  overflow-x: auto;
  font-size: 0.95rem;
}

.final {
  text-align: center;
}

a {
  color: var(--accent);
}

footer {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
}

footer h2 {
  font-size: 1rem;
}

footer p {
  color: var(--muted);
  font-size: 0.9rem;
}