:root {
  --bg: #0c0f14;
  --surface: #141922;
  --text: #e8ecf3;
  --muted: #98a3b8;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --border: #263041;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  width: min(1100px, 92vw);
  margin-inline: auto;
}

.header {
  border-bottom: 1px solid var(--border);
  background: rgba(12, 15, 20, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  font-weight: 650;
  letter-spacing: -0.02em;
}

.hero {
  padding: clamp(3rem, 8vw, 6rem) 0;
}

.hero__content h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: var(--muted);
  margin: 0 0 0.75rem;
}

.lede {
  font-size: 1.125rem;
  color: var(--muted);
  max-width: 42rem;
  margin: 0 0 1.75rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.fineprint {
  font-size: 0.875rem;
  color: var(--muted);
  margin: 0;
}

.section {
  padding: clamp(3rem, 6vw, 5rem) 0;
}

.section--accent {
  background: var(--surface);
  border-block: 1px solid var(--border);
}

.grid-3 {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 720px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.02);
}

.card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.book {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
}

.book h2 {
  margin: 0 0 0.5rem;
}

.book__lede {
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.book__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.footer {
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--border);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
  text-align: center;
}

.footer__copy,
.footer__contact {
  margin: 0;
  font-size: 0.875rem;
  color: var(--muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.1rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn--lg {
  padding: 0.85rem 1.35rem;
  font-size: 1rem;
}

.btn--primary {
  background: var(--accent);
  color: #fff;
}

.btn--primary:hover {
  background: var(--accent-hover);
}

.btn--secondary {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

.btn--secondary:hover {
  border-color: var(--muted);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn--ghost:hover {
  border-color: var(--muted);
}

code {
  font-size: 0.85em;
  color: var(--muted);
}


.visual-strip {
  padding: clamp(1.75rem, 4vw, 2.5rem) 0;
  border-block: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.18);
}

.visual-strip__grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
  justify-items: center;
  max-width: 52rem;
  margin-inline: auto;
}

@media (min-width: 720px) {
  .visual-strip__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }
}

.visual-strip__item {
  margin: 0;
  text-align: center;
  width: 100%;
  max-width: 17rem;
}

.visual-strip__frame {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 3 / 2;
  background: var(--surface);
  width: 100%;
}

.visual-strip__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  filter: saturate(0.88) contrast(1.04);
}