:root {
  --void: #0b0c0f;
  --ink: #f2efe6;
  --dim: #9a9588;
  --line: rgba(242, 239, 230, 0.14);
  --heat: #ff4d1a;
  --heat-deep: #c2340d;
  --steel: #1c2230;
  --flash: #f6e27a;
  --pad: 1rem;
  --tap: 2.75rem;
}

* { box-sizing: border-box; margin: 0; }
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
body {
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  background: var(--void);
  color: var(--ink);
  min-height: 100svh;
  overflow-x: hidden;
  line-height: 1.4;
}

.stage {
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 90% 55% at 80% 0%, rgba(255, 77, 26, 0.2), transparent 55%),
    radial-gradient(ellipse 80% 50% at 0% 90%, rgba(28, 34, 48, 0.9), transparent 50%),
    linear-gradient(180deg, #0b0c0f 0%, #12151c 50%, #0b0c0f 100%);
}
.stage::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(242, 239, 230, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(242, 239, 230, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 20%, black 15%, transparent 70%);
  animation: gridDrift 28s linear infinite;
  pointer-events: none;
}

@keyframes gridDrift {
  from { transform: translateY(0); }
  to { transform: translateY(48px); }
}
@keyframes rise {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}
@keyframes pulseHeat {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 77, 26, 0.45); }
  50% { box-shadow: 0 0 0 12px rgba(255, 77, 26, 0); }
}

/* Mobile-first shell */
.wrap {
  position: relative;
  z-index: 1;
  width: min(100% - (var(--pad) * 2), 1080px);
  margin-inline: auto;
}

.brand {
  font-family: "Archivo Black", Impact, sans-serif;
  font-size: clamp(2.4rem, 14vw, 7.5rem);
  line-height: 0.84;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  animation: rise 0.7s 0.1s both;
}
.brand em {
  font-style: normal;
  color: var(--heat);
}

.headline {
  margin-top: 1rem;
  font-size: clamp(1.2rem, 5.2vw, 1.85rem);
  font-weight: 600;
  max-width: 22ch;
  line-height: 1.2;
  animation: rise 0.7s 0.22s both;
}

.sub {
  margin-top: 0.75rem;
  color: var(--dim);
  font-size: 1rem;
  max-width: 38ch;
  line-height: 1.45;
  animation: rise 0.7s 0.32s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: var(--tap);
  width: 100%;
  padding: 0.95rem 1.25rem;
  background: var(--heat);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  border: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  animation: pulseHeat 2.4s ease-in-out infinite;
  transition: background 0.15s ease, transform 0.15s ease;
}
.btn:hover {
  background: var(--heat-deep);
  animation: none;
}
.btn:active { transform: scale(0.98); }
.btn.ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink);
  animation: none;
}
.btn.ghost:hover {
  border-color: var(--heat);
  background: rgba(255, 77, 26, 0.08);
}
.btn small {
  opacity: 0.85;
  font-weight: 600;
  font-size: 0.85rem;
}

.meta {
  color: var(--dim);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
}

.cta-row {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  animation: rise 0.7s 0.42s both;
}

section {
  position: relative;
  z-index: 1;
  padding: 3rem 0;
  border-top: 1px solid var(--line);
}

h2 {
  font-family: "Archivo Black", Impact, sans-serif;
  font-size: clamp(1.75rem, 8vw, 3.2rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  max-width: 16ch;
  margin-bottom: 0.75rem;
}
h2 span { color: var(--heat); }

.lead {
  color: var(--dim);
  font-size: 1rem;
  max-width: 42ch;
  margin-bottom: 1.5rem;
  line-height: 1.45;
}

footer {
  position: relative;
  z-index: 1;
  padding: 1.5rem 0 2.5rem;
  color: var(--dim);
  font-size: 0.8rem;
  border-top: 1px solid var(--line);
  line-height: 1.4;
}

/* Desktop enhancements */
@media (min-width: 720px) {
  :root { --pad: 1.25rem; }
  .stage::after { background-size: 72px 72px; }
  .btn {
    width: auto;
    padding: 1.05rem 1.55rem;
  }
  .btn:hover { transform: translateY(-2px); }
  .cta-row {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
  }
  .sub { font-size: 1.05rem; }
  .lead { font-size: 1.12rem; margin-bottom: 2rem; }
  section { padding: 4.5rem 0; }
  footer { padding: 2rem 0 3rem; font-size: 0.85rem; }
}