/* --- Variables --- */
:root {
  --bg: #0a0b0d;
  --bg-elevated: #111215;
  --surface: #181a1e;
  --border: #2a2d33;
  --text: #e8eaed;
  --text-muted: #9ca3af;
  --accent: #22d3ee;
  --accent-dim: #0891b2;
  --accent-glow: rgba(34, 211, 238, 0.15);
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --space: 1.25rem;
  --radius: 8px;
  --transition: 0.2s ease;
}

/* --- Reset & base --- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

/* --- Header --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space) 0;
  background: linear-gradient(to bottom, var(--bg) 60%, transparent);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: -0.02em;
}
.logo-dot { color: var(--accent); }
.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.nav a:hover { color: var(--text); }
.nav-cta {
  color: var(--accent) !important;
  font-weight: 600;
}
.site-header.scrolled {
  background: rgba(10, 11, 13, 0.9);
  backdrop-filter: blur(8px);
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 115vh;
  display: flex;
  align-items: flex-start;
  padding: 5rem 1.5rem 4rem;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10, 11, 13, 0.4) 0%, var(--bg) 75%),
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--accent-glow), transparent),
    url("images/hero-gpus.png") center 20%/cover no-repeat;
  pointer-events: none;
  opacity: 0.9;
}
.hero-content {
  position: relative;
  max-width: 640px;
}
.gpu-stats {
  position: absolute;
  top: 6.5rem;
  right: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.35;
  color: rgba(232, 234, 237, 0.9);
  padding: 0.85rem 1rem;
  border-radius: 10px;
  border: 1px solid rgba(42, 45, 51, 0.85);
  background: rgba(10, 11, 13, 0.55);
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  letter-spacing: -0.01em;
  user-select: none;
}
.gpu-stats-row {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  white-space: nowrap;
}
.gpu-stats-row + .gpu-stats-row {
  margin-top: 0.35rem;
}
.gpu-stats-value {
  color: var(--accent);
  font-weight: 600;
}
.hero-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin: 0 0 1rem;
}
.hero-title {
  font-size: clamp(2.5rem, 6vw, 3.75rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0 0 1.25rem;
}
.hero-title .highlight {
  color: var(--accent);
  font-weight: 700;
}
.hero-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin: 0 0 2rem;
  max-width: 28em;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.ai-proof {
  margin-top: 8rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: rgba(232, 234, 237, 0.85);
  display: inline-block;
  text-shadow:
    0 0 10px rgba(0, 224, 255, 0.65),
    0 0 22px rgba(0, 224, 255, 0.25);
  animation: flicker 4s infinite alternate;
}
.ai-proof .highlight {
  color: #00e0ff;
  cursor: pointer;
}
.ai-proof .highlight:hover {
  text-shadow: 0 0 10px #00e0ff;
}
.ai-proof-sub {
  margin-top: 0.4rem;
  color: rgba(232, 234, 237, 0.72);
  text-shadow: none;
}

@keyframes flicker {
  0% { opacity: 0.6; }
  100% { opacity: 0.9; }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
}
.btn-primary {
  background: var(--accent);
  color: var(--bg);
}
.btn-primary:hover {
  background: #67e8f9;
  box-shadow: 0 0 24px var(--accent-glow);
}
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  color: var(--text);
  border-color: var(--text-muted);
}
.btn-large {
  padding: 1rem 1.75rem;
  font-size: 1rem;
}

/* --- Sections --- */
.section {
  padding: 3.5rem 1.5rem;
}
.container {
  max-width: 960px;
  margin: 0 auto;
}
.section-title {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 1.75rem;
  color: var(--text);
}
.why .section-title {
  color: rgba(0, 224, 255, 0.75);
  text-shadow: 0 0 10px rgba(0, 224, 255, 0.16);
}
.section-sub {
  margin: -1.1rem 0 1.35rem;
  color: rgba(255, 255, 255, 0.7);
  max-width: 52ch;
}

.feature {
  padding: 12px 0;
}
.feature h3 {
  color: rgba(0, 224, 255, 0.68);
  font-weight: 600;
  margin: 0 0 0.35rem;
  text-shadow:
    0 0 8px rgba(0, 224, 255, 0.18);
}
.feature p {
  color: rgba(255,255,255,0.7);
  margin: 0;
}

/* --- Services grid --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.15rem;
}
.service-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.service-card:hover {
  border-color: var(--accent-dim);
  box-shadow: 0 0 0 1px var(--accent-dim);
}
.service-icon {
  display: block;
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 1.25rem;
  margin-bottom: 1rem;
}
.service-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}
.service-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* --- Offer specs --- */
.offer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.15rem;
}
.offer-card {
  background:
    radial-gradient(circle at 20% 0%, rgba(0, 224, 255, 0.14), transparent 55%),
    var(--surface);
  border: 1px solid rgba(34, 211, 238, 0.28);
  border-radius: var(--radius);
  padding: 1.6rem;
  box-shadow: 0 0 0 1px rgba(34, 211, 238, 0.08), 0 18px 40px rgba(0, 0, 0, 0.35);
}
.offer-top {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 1.05rem;
}
.offer-kicker {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: rgba(0, 224, 255, 0.85);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.offer-title {
  font-size: 1.6rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  color: var(--text);
}
.offer-title-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}
.price-block {
  text-align: right;
  white-space: nowrap;
}
.price-main {
  font-size: 1.6rem;
  font-weight: 600;
  color: #00e0ff;
  text-shadow: 0 0 14px rgba(0, 224, 255, 0.18);
}
.price-main span {
  font-size: 0.9rem;
  opacity: 0.7;
}
.price-sub {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  opacity: 0.6;
  color: rgba(232, 234, 237, 0.85);
}
.spec-highlight {
  margin: 0.6rem 0 0;
  color: rgba(232, 234, 237, 0.82);
  max-width: none;
  font-size: 0.98rem;
  text-shadow: 0 0 14px rgba(0, 224, 255, 0.12);
  white-space: nowrap;
}
.offer-note {
  margin: 0;
  color: rgba(232, 234, 237, 0.72);
  font-family: inherit;
  font-size: inherit;
}
.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}
.spec {
  border: 1px solid rgba(34, 211, 238, 0.18);
  border-radius: 10px;
  padding: 0.85rem 1rem;
  background:
    linear-gradient(180deg, rgba(34, 211, 238, 0.06), transparent 60%),
    rgba(17, 18, 21, 0.55);
}
.spec-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}
.spec-value {
  font-size: 1rem;
  color: rgba(232, 234, 237, 0.92);
  text-shadow: 0 0 12px rgba(0, 224, 255, 0.12);
}
.spec-cta a {
  display: inline-block;
  margin-top: 14px;
  color: #00e0ff;
  text-decoration: none;
  font-weight: 500;
}
.spec-cta a:hover {
  text-shadow: 0 0 10px #00e0ff;
}

/* --- Why list --- */
.why-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.why-list li {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 1.05rem;
}
.why-list li:last-child { border-bottom: none; }
.why-list strong {
  color: var(--text);
  font-weight: 600;
  display: block;
  margin-bottom: 0.25rem;
}

/* --- CTA --- */
.cta {
  text-align: center;
  padding: 4.5rem 1.5rem;
}
.cta .section-title { margin-bottom: 1rem; }
.cta-text {
  max-width: 32em;
  margin: 0 auto 2rem;
  color: var(--text-muted);
  font-size: 1.1rem;
}
.cta .btn-large {
  margin: 0 auto;
}

/* --- Footer --- */
.site-footer {
  padding: 2rem 1.5rem;
  border-top: 1px solid var(--border);
}
.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}
.footer-brand {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
}
.footer-copy {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
}

/* --- Responsive --- */
@media (max-width: 640px) {
  .nav .nav-cta { display: none; }
  .gpu-stats { display: none; }
  .hero { padding-top: 5rem; }
  .section { padding: 3.5rem 1.5rem; }
  .cta { padding: 4rem 1.5rem; }
  .spec-grid { grid-template-columns: 1fr; }
  .offer-grid { grid-template-columns: 1fr; }
  .spec-highlight { white-space: normal; }
}

@media (max-width: 1024px) {
  .offer-grid { grid-template-columns: 1fr; }
}