:root {
  --bg: #000000;
  --surface: #1C1C1E;
  --surface-elevated: #2C2C2E;
  --border: #2C2C2E;
  --text-primary: #FFFFFF;
  --text-secondary: #8E8E93;
  --text-muted: #636366;
  --brand: #2DB877;
  --brand-light: #34D399;
  --error: #EF4444;
  --success: #10B981;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

a {
  color: var(--brand);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}

.container--narrow {
  max-width: 560px;
}

header.site {
  padding: 32px 24px;
  border-bottom: 1px solid var(--border);
}

header.site .brand {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  font-size: 60px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  text-decoration: none;
  line-height: 1;
}

header.site .brand > span {
  display: inline-block;
  line-height: 1;
}

header.site .brand:hover {
  text-decoration: none;
}

header.site .brand-logo {
  width: 60px;
  height: 60px;
  display: block;
  flex-shrink: 0;
}

@media (max-width: 600px) {
  header.site { padding: 22px 20px; }
  header.site .brand { font-size: 42px; gap: 12px; }
  header.site .brand-logo { width: 42px; height: 42px; }
}

h1 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  line-height: 1.2;
}

h2 {
  font-size: 20px;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 12px;
  color: var(--text-primary);
}

h3 {
  font-size: 16px;
  font-weight: 600;
  margin-top: 20px;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

p {
  margin-bottom: 16px;
  color: var(--text-secondary);
}

ol, ul {
  margin-bottom: 16px;
  padding-left: 24px;
  color: var(--text-secondary);
}

li {
  margin-bottom: 8px;
}

strong {
  color: var(--text-primary);
  font-weight: 600;
}

code {
  background: var(--surface);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'SF Mono', Menlo, Monaco, Consolas, monospace;
  font-size: 14px;
  color: var(--brand-light);
}

.lede {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  margin: 24px 0;
}

.tagline {
  font-size: 20px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--brand);
  margin-bottom: 12px;
}

.button {
  display: inline-block;
  background: var(--brand);
  color: #000;
  font-weight: 600;
  font-size: 16px;
  padding: 14px 24px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.button:hover {
  opacity: 0.9;
  text-decoration: none;
}

.button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.button--secondary {
  background: var(--surface-elevated);
  color: var(--text-primary);
}

form .field {
  margin-bottom: 20px;
}

form label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 8px;
}

form input,
form select,
form textarea {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font: inherit;
  font-size: 16px;
  padding: 12px 14px;
  border-radius: 10px;
  outline: none;
  transition: border-color 0.15s ease;
}

form input:focus,
form select:focus,
form textarea:focus {
  border-color: var(--brand);
}

form textarea {
  resize: vertical;
  min-height: 120px;
  font-family: inherit;
}

.form-status {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
  display: none;
}

.form-status.ok {
  display: block;
  background: rgba(16, 185, 129, 0.12);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.form-status.err {
  display: block;
  background: rgba(239, 68, 68, 0.12);
  color: var(--error);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

footer.site {
  padding: 32px 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 14px;
  color: var(--text-muted);
}

footer.site nav {
  margin-bottom: 12px;
}

footer.site nav a {
  color: var(--text-secondary);
  margin: 0 12px;
}

@media (max-width: 600px) {
  .container { padding: 32px 20px 64px; }
  h1 { font-size: 26px; }
  h2 { font-size: 18px; }
}