:root {
  color-scheme: dark;
  --bg: #101216;
  --panel: #191d24;
  --panel-2: #222832;
  --text: #f5f7fb;
  --muted: #b9c0cc;
  --line: #333b49;
  --cyan: #47d5ff;
  --lime: #b8f45b;
  --amber: #ffbf57;
  --danger: #ff6f6f;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
}

.topbar {
  align-items: center;
  display: flex;
  justify-content: space-between;
  left: 0;
  padding: 18px clamp(18px, 4vw, 48px);
  position: fixed;
  right: 0;
  top: 0;
  z-index: 10;
}

.topbar.solid {
  background: rgba(16, 18, 22, 0.94);
  border-bottom: 1px solid var(--line);
}

.brand {
  font-size: 1.05rem;
  font-weight: 800;
  text-decoration: none;
}

nav {
  display: flex;
  gap: clamp(14px, 3vw, 28px);
}

nav a {
  color: var(--muted);
  font-size: 0.95rem;
  text-decoration: none;
}

nav a:hover {
  color: var(--text);
}

.hero {
  align-items: center;
  background:
    linear-gradient(90deg, rgba(16, 18, 22, 0.94) 0%, rgba(16, 18, 22, 0.76) 46%, rgba(16, 18, 22, 0.24) 100%),
    url("https://images.unsplash.com/photo-1503736334956-4c8f8e92946d?auto=format&fit=crop&w=2400&q=85") center / cover;
  display: flex;
  min-height: 88svh;
  padding: 108px clamp(20px, 6vw, 72px) 72px;
}

.hero-copy {
  max-width: 720px;
}

.eyebrow {
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  margin: 0 0 12px;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(3rem, 10vw, 7.6rem);
  line-height: 0.9;
  margin-bottom: 24px;
}

h2 {
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1;
  margin-bottom: 18px;
}

h3 {
  font-size: 1.3rem;
}

.lede {
  color: var(--muted);
  font-size: clamp(1.12rem, 2.4vw, 1.4rem);
  max-width: 600px;
}

.hero-actions,
.portal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  border: 1px solid transparent;
  border-radius: 7px;
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-weight: 800;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  text-decoration: none;
}

.button.primary {
  background: var(--lime);
  color: #11150d;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--text);
}

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

.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.hero-metrics span {
  background: rgba(16, 18, 22, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 7px;
  color: var(--text);
  font-weight: 700;
  padding: 8px 10px;
}

.section {
  margin: 0 auto;
  max-width: 1180px;
  padding: 70px clamp(20px, 5vw, 40px);
}

.intro {
  align-items: start;
  display: grid;
  gap: 28px;
  grid-template-columns: 1.1fr 1fr;
}

.intro p,
.section-heading p,
.price-card p,
.legal p,
.panel p {
  color: var(--muted);
}

.stat-row {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, 1fr);
}

.stat-row div,
.price-card,
.panel,
.setup-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
}

.stat-row strong {
  color: var(--amber);
  display: block;
  font-size: 2rem;
  line-height: 1;
}

.stat-row span {
  color: var(--muted);
  display: block;
  margin-top: 8px;
}

.section-heading {
  max-width: 700px;
}

.setup-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 26px;
}

.setup-card span {
  color: var(--amber);
  display: block;
  font-weight: 900;
  margin-bottom: 14px;
}

.setup-card p,
.callout,
.fine-print {
  color: var(--muted);
}

.faq-preview {
  padding-top: 24px;
}

.faq-list {
  display: grid;
  gap: 12px;
  margin: 24px 0;
}

details {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px 18px;
}

summary {
  cursor: pointer;
  font-weight: 800;
}

details p {
  color: var(--muted);
  margin: 12px 0 0;
}

.text-link {
  color: var(--cyan);
  font-weight: 800;
  text-decoration: none;
}

.callout {
  background: rgba(71, 213, 255, 0.08);
  border: 1px solid rgba(71, 213, 255, 0.28);
  border-radius: 8px;
  padding: 12px 14px;
}

.setup-panel {
  margin-top: 18px;
}

.steps,
.check-list {
  color: var(--muted);
  margin: 14px 0 0;
  padding-left: 22px;
}

.steps li,
.check-list li {
  margin: 9px 0;
}

.instruction-card {
  margin-top: 18px;
}

.instruction-card h2,
.setup-panel h2 {
  font-size: 1.55rem;
  line-height: 1.15;
}

.price-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 26px;
}

.price-card.featured {
  border-color: rgba(71, 213, 255, 0.64);
}

.price {
  color: var(--text);
  font-size: 3rem;
  font-weight: 900;
  line-height: 1;
  margin-bottom: 14px;
}

.price span {
  color: var(--muted);
  font-size: 1rem;
}

label {
  color: var(--muted);
  display: grid;
  font-size: 0.95rem;
  gap: 8px;
}

input,
textarea {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--text);
  font: inherit;
  min-height: 44px;
  padding: 10px 12px;
  width: 100%;
}

textarea {
  min-height: 150px;
  resize: vertical;
}

.checkout-form {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.notice {
  color: var(--danger);
  min-height: 1.5em;
}

.footer {
  align-items: center;
  border-top: 1px solid var(--line);
  color: var(--muted);
  display: flex;
  gap: 18px;
  justify-content: space-between;
  padding: 24px clamp(20px, 5vw, 48px);
}

.plain-page {
  padding-top: 84px;
}

.portal,
.legal {
  margin: 0 auto;
  max-width: 820px;
  padding: 54px 20px;
}

.legal h1,
.panel h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
}

.license-result {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

code {
  background: var(--panel-2);
  border-radius: 5px;
  color: var(--cyan);
  padding: 2px 5px;
}

@media (max-width: 760px) {
  .topbar,
  .footer,
  .intro {
    align-items: flex-start;
    flex-direction: column;
  }

  .topbar {
    gap: 12px;
    position: absolute;
  }

  .intro,
  .price-grid,
  .setup-grid,
  .stat-row {
    grid-template-columns: 1fr;
  }

  .hero {
    background:
      linear-gradient(180deg, rgba(16, 18, 22, 0.88) 0%, rgba(16, 18, 22, 0.82) 62%, rgba(16, 18, 22, 0.98) 100%),
      url("https://images.unsplash.com/photo-1503736334956-4c8f8e92946d?auto=format&fit=crop&w=1200&q=82") center / cover;
    min-height: 84svh;
  }
}