:root {
  color-scheme: dark;
  --bg: #07090d;
  --panel: rgba(17, 22, 31, 0.92);
  --text: #f5f7fb;
  --muted: #aeb8c8;
  --line: rgba(255, 255, 255, 0.14);
  --cyan: #39d9ff;
  --lime: #c7ff47;
  --coral: #ff5d83;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(115deg, rgba(57, 217, 255, 0.08), transparent 34%),
    linear-gradient(245deg, rgba(255, 93, 131, 0.06), transparent 40%),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
  line-height: 1.5;
}

.sample-page {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 36px 0 52px;
}

.sample-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 62px;
  border-bottom: 1px solid var(--line);
}

.sample-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
}

.sample-brand span:first-child {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(199, 255, 71, 0.5);
  border-radius: var(--radius);
  color: var(--lime);
}

.sample-nav a {
  color: var(--cyan);
  text-decoration: none;
  font-weight: 900;
}

.sample-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.7fr);
  gap: 26px;
  align-items: center;
  padding: 58px 0 34px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--lime);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: 4rem;
  line-height: 1;
}

.lead {
  max-width: 660px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.btn {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  font-weight: 900;
}

.btn-primary {
  border-color: transparent;
  background: linear-gradient(135deg, var(--lime), var(--cyan));
  color: #071006;
}

.sample-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.07), transparent 52%),
    var(--panel);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.42);
  overflow: hidden;
}

.panel-head,
.panel-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px;
  border-bottom: 1px solid var(--line);
}

.panel-head {
  background: rgba(57, 217, 255, 0.08);
  font-weight: 900;
}

.panel-row:last-child {
  border-bottom: 0;
}

.panel-row span {
  color: var(--muted);
}

.panel-row strong {
  text-align: right;
}

.sample-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.sample-card {
  min-height: 170px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.055);
}

.sample-card h2 {
  margin: 0 0 8px;
  font-size: 1.16rem;
}

.sample-card p {
  margin: 0;
  color: var(--muted);
}

@media (max-width: 820px) {
  .sample-hero,
  .sample-grid {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 2.5rem;
  }
}