:root {
  --bg: #0f172a;
  --bg-alt: #111827;
  --accent: #3b82f6;
  --accent-soft: rgba(59, 130, 246, 0.12);
  --text: #e2e8f0;
  --text-muted: #cbd5f5;
  --card-bg: rgba(15, 23, 42, 0.72);
  --border: rgba(148, 163, 184, 0.2);
  --container: min(1120px, 92vw);
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  color: var(--text);
  background: radial-gradient(circle at top, #1e293b 0%, #020617 60%);
}

body {
  line-height: 1.6;
  letter-spacing: 0.01em;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

h1,
h2,
h3 {
  margin-top: 0;
  color: #f8fafc;
}

h1 {
  font-size: clamp(2.6rem, 4vw, 3.6rem);
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(2rem, 3vw, 2.8rem);
  margin-bottom: 1.5rem;
}

h3 {
  font-size: clamp(1.2rem, 2.4vw, 1.5rem);
}

p {
  margin: 0.6rem 0 1.2rem;
  color: var(--text-muted);
}

ul {
  padding-left: 1.2rem;
  color: var(--text-muted);
}

.section {
  padding: clamp(3rem, 8vw, 5rem) 0;
}

.section--accent {
  background: rgba(15, 23, 42, 0.7);
}

.section--alt {
  background: rgba(17, 24, 39, 0.78);
}

.hero {
  position: relative;
  min-height: 70vh;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.hero__content {
  position: relative;
  padding: clamp(3rem, 10vw, 6rem) 0;
  z-index: 2;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.8rem;
  font-size: 0.85rem;
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.hero__bg {
  position: absolute;
  inset: -20%;
  background: radial-gradient(circle at center, rgba(59, 130, 246, 0.35), transparent 70%);
  filter: blur(120px);
  z-index: 1;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.6rem;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 999px;
  text-decoration: none;
  transition: background 0.2s ease, transform 0.2s ease, border 0.2s ease;
}

.button:hover {
  background: rgba(59, 130, 246, 0.18);
  border-color: rgba(59, 130, 246, 0.5);
  transform: translateY(-2px);
}

.button--primary {
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  border-color: transparent;
}

.button--primary:hover {
  background: linear-gradient(135deg, #2563eb, #4f46e5);
}

.grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
  padding: clamp(1.4rem, 3vw, 2rem);
  background: var(--card-bg);
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 18px;
  box-shadow: 0 18px 40px -28px rgba(148, 163, 184, 0.6);
  backdrop-filter: blur(14px);
  transition: transform 0.2s ease, border 0.2s ease;
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(59, 130, 246, 0.3);
}

.card--detail ul {
  margin: 0;
}

.card--detail li + li {
  margin-top: 0.6rem;
}

.card--usecase footer {
  margin-top: 1.2rem;
  font-weight: 600;
  color: #93c5fd;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.metric {
  padding: 1.5rem;
  background: rgba(15, 23, 42, 0.8);
  border-radius: 16px;
  border: 1px solid rgba(148, 163, 184, 0.24);
  text-align: center;
}

.metric__value {
  display: block;
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: #bfdbfe;
}

.metric__label {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.chart {
  background: rgba(15, 23, 42, 0.8);
  border-radius: 18px;
  padding: 2rem;
  border: 1px solid rgba(148, 163, 184, 0.24);
}

.chart__bar {
  position: relative;
  background: rgba(59, 130, 246, 0.18);
  border-radius: 999px;
  margin: 0.8rem 0;
  padding: 0.75rem 1rem;
  font-weight: 600;
  color: #bfdbfe;
}

.chart__bar span {
  position: absolute;
  inset: 4px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.85), rgba(99, 102, 241, 0.85));
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 1rem;
  color: #0f172a;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  max-width: calc(var(--value) * 1%);
  min-width: 25%;
  transition: max-width 1s ease;
}

.chart__bar span::after {
  content: attr(data-value);
  color: currentColor;
  margin-left: 0.35rem;
}

.architecture {
  display: grid;
  gap: 1.5rem;
}

.architecture__layer {
  padding: 1.6rem;
  border-radius: 18px;
  background: rgba(15, 23, 42, 0.75);
  border: 1px solid rgba(148, 163, 184, 0.22);
  box-shadow: inset 0 0 0 1px rgba(59, 130, 246, 0.05);
}

.timeline {
  display: grid;
  gap: 1.5rem;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0.7rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.7), rgba(99, 102, 241, 0.2));
}

.timeline__item {
  position: relative;
  padding-left: 2.8rem;
}

.timeline__item::before {
  content: '';
  position: absolute;
  left: 0.1rem;
  top: 0.35rem;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  border: 2px solid #3b82f6;
  background: #0f172a;
}

.timeline__time {
  display: inline-block;
  font-weight: 600;
  color: #93c5fd;
  margin-bottom: 0.5rem;
}

.faq details {
  border: 1px solid rgba(148, 163, 184, 0.25);
  border-radius: 14px;
  padding: 1rem 1.2rem;
  background: rgba(15, 23, 42, 0.75);
  margin-bottom: 1rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
}

.faq details[open] {
  border-color: rgba(59, 130, 246, 0.35);
  box-shadow: 0 18px 36px -32px rgba(59, 130, 246, 0.6);
}

.footer {
  background: #020617;
  padding: 2.5rem 0;
  border-top: 1px solid rgba(148, 163, 184, 0.16);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

@media (max-width: 720px) {
  .hero__actions {
    justify-content: flex-start;
  }

  .metrics {
    grid-template-columns: 1fr 1fr;
  }

  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 520px) {
  .metrics {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }
}