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

html { scroll-behavior: smooth; }

body.demo {
  font-family: var(--body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }

.demo-badge {
  position: fixed;
  top: 0.85rem;
  left: 0.85rem;
  z-index: 50;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.55);
  border: 1px solid var(--line);
  backdrop-filter: blur(8px);
  color: var(--ink);
}

.d-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.35rem clamp(1.25rem, 4vw, 2.5rem);
  max-width: 1080px;
  margin: 0 auto;
}

.d-nav strong {
  font-family: var(--display);
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.d-nav nav {
  display: flex;
  gap: 1rem;
  align-items: center;
  font-size: 0.9rem;
  color: var(--muted);
}

.d-nav .d-cta {
  padding: 0.5rem 0.95rem;
  border-radius: 999px;
  background: var(--accent);
  color: #0a0a0a;
  font-weight: 600;
}

.d-hero {
  padding: clamp(3.5rem, 10vw, 6rem) clamp(1.25rem, 4vw, 2.5rem) clamp(3rem, 7vw, 4.5rem);
  max-width: 1080px;
  margin: 0 auto;
  background: var(--hero);
  border-radius: 0 0 2rem 2rem;
}

.d-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.85rem;
}

.d-hero h1 {
  font-family: var(--display);
  font-size: clamp(2.4rem, 7vw, 4.2rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  max-width: 14ch;
  margin-bottom: 1rem;
}

.d-lead {
  max-width: 36rem;
  color: var(--muted);
  font-weight: 300;
  font-size: 1.05rem;
  margin-bottom: 1.75rem;
}

.d-btn {
  display: inline-flex;
  padding: 0.85rem 1.35rem;
  border-radius: 999px;
  background: var(--accent);
  color: #0a0a0a;
  font-weight: 600;
}

.d-section {
  padding: clamp(2.75rem, 6vw, 4rem) clamp(1.25rem, 4vw, 2.5rem);
  max-width: 1080px;
  margin: 0 auto;
}

.d-section--alt {
  background: var(--panel);
  max-width: none;
  padding-left: max(1.25rem, calc((100% - 1080px) / 2 + 1.25rem));
  padding-right: max(1.25rem, calc((100% - 1080px) / 2 + 1.25rem));
}

.d-section h2 {
  font-family: var(--display);
  font-size: clamp(1.7rem, 3.5vw, 2.3rem);
  letter-spacing: -0.03em;
  margin-bottom: 1.35rem;
}

.d-copy {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 40rem;
}

.d-grid3 {
  display: grid;
  gap: 1rem;
}

@media (min-width: 720px) {
  .d-grid3 { grid-template-columns: repeat(3, 1fr); }
  .d-nav nav a:not(.d-cta) { display: inline; }
}

@media (max-width: 719px) {
  .d-nav nav a:not(.d-cta) { display: none; }
}

.d-grid3 article {
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: color-mix(in srgb, var(--panel) 80%, transparent);
}

.d-grid3 h3 {
  font-family: var(--display);
  font-size: 1.15rem;
  margin-bottom: 0.35rem;
}

.d-grid3 p {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 300;
}

.d-grid3 span {
  display: block;
  margin-top: 0.75rem;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
}

.d-book .d-form {
  display: grid;
  gap: 0.75rem;
  max-width: 420px;
}

.d-form input,
.d-form select,
.d-form button {
  font: inherit;
  padding: 0.85rem 1rem;
  border-radius: 0.75rem;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
}

.d-form button {
  background: var(--accent);
  color: #0a0a0a;
  border: none;
  font-weight: 600;
  cursor: pointer;
}

.d-foot {
  padding: 2rem clamp(1.25rem, 4vw, 2.5rem) 2.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--line);
}

.d-foot a {
  color: var(--accent);
  font-weight: 600;
}