:root {
  --bg: #03040b;
  --panel: rgba(9, 10, 20, 0.82);
  --panel-soft: rgba(17, 18, 32, 0.72);
  --border: rgba(188, 134, 255, 0.18);
  --border-strong: rgba(188, 134, 255, 0.32);
  --text: #f4f0ff;
  --muted: #bdb6cc;
  --purple: #9f55ff;
  --purple-soft: #c69aff;
  --teal: #5ee6d6;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 14% 44%, rgba(135, 56, 255, 0.28), transparent 18rem),
    radial-gradient(circle at 88% 44%, rgba(135, 56, 255, 0.22), transparent 22rem),
    linear-gradient(180deg, #03040b 0%, #070812 55%, #03040b 100%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  overflow-x: hidden;
}

.bg-stars {
  position: fixed;
  inset: 0;
  z-index: -3;
  background-image:
    radial-gradient(circle, rgba(255,255,255,0.75) 0 1px, transparent 1.5px),
    radial-gradient(circle, rgba(188,134,255,0.55) 0 1px, transparent 1.4px);
  background-size: 180px 180px, 260px 260px;
  background-position: 0 0, 80px 60px;
  opacity: 0.28;
}

.bg-nebula {
  position: fixed;
  z-index: -2;
  width: 38rem;
  height: 38rem;
  border-radius: 50%;
  filter: blur(44px);
  opacity: 0.35;
  background:
    radial-gradient(circle, rgba(159,85,255,0.65), transparent 60%),
    radial-gradient(circle at 35% 65%, rgba(94,230,214,0.18), transparent 36%);
}

.bg-nebula-left {
  left: -18rem;
  top: 10rem;
}

.bg-nebula-right {
  right: -16rem;
  top: 14rem;
}

.site-header {
  height: 78px;
  padding: 0 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  border-bottom: 1px solid rgba(188, 134, 255, 0.14);
  background: rgba(3, 4, 11, 0.82);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.95rem;
  color: var(--text);
  text-decoration: none;
  min-width: 330px;
}

.brand-text {
  font-size: clamp(1.8rem, 3vw, 2.45rem);
  font-weight: 750;
  letter-spacing: -0.06em;
}

.brand-text span {
  color: var(--purple);
}

.dust-cloud {
  position: relative;
  width: 170px;
  height: 54px;
  display: inline-block;
  transform: rotate(-7deg);
  filter: drop-shadow(0 0 16px rgba(159, 85, 255, 0.65));
}

.dust-cloud::before {
  content: "";
  position: absolute;
  left: 18%;
  top: 36%;
  width: 64%;
  height: 32%;
  border-radius: 999px;
  background: radial-gradient(ellipse, rgba(159,85,255,0.78), transparent 70%);
  filter: blur(9px);
}

.dust-cloud i,
.dust-icon i {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: var(--s);
  height: var(--s);
  opacity: var(--o);
  border-radius: 50%;
  background: radial-gradient(circle, #fff, var(--purple-soft) 45%, transparent 72%);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2vw, 2rem);
  font-size: 0.96rem;
}

.main-nav a {
  position: relative;
  color: var(--text);
  text-decoration: none;
  opacity: 0.88;
  white-space: nowrap;
}

.main-nav a:hover {
  color: var(--purple-soft);
  opacity: 1;
}

.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1.45rem;
  height: 3px;
  border-radius: 99px;
  background: var(--purple);
  box-shadow: 0 0 18px rgba(159, 85, 255, 0.9);
}

main {
  width: min(100%, 1460px);
  margin: 0 auto;
  padding: 1.6rem 2.5rem 3rem;
}

.hero-shell {
  display: flex;
  justify-content: center;
}

.hero-card {
  width: min(100%, 1260px);
  padding: 1.35rem;
  border: 1px solid var(--border);
  border-radius: 1.05rem;
  background:
    linear-gradient(180deg, rgba(14, 15, 28, 0.72), rgba(5, 6, 14, 0.86)),
    radial-gradient(circle at 50% 0%, rgba(159, 85, 255, 0.18), transparent 55%);
  box-shadow:
    0 30px 90px rgba(0, 0, 0, 0.42),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 1.25rem;
  align-items: stretch;
}

.hero-main {
  min-width: 0;
}

.simulation-figure {
  margin: 0 auto;
  width: 100%;
}

.simulation-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0.35rem;
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.08),
    0 18px 60px rgba(0,0,0,0.35);
}

.hero-statement {
  max-width: 900px;
  margin: 1.85rem auto 0;
  text-align: center;
  color: #ddd7e9;
  font-size: clamp(1.45rem, 2.7vw, 2.15rem);
  line-height: 1.32;
  letter-spacing: -0.045em;
}

.hero-statement strong {
  color: #fff;
  font-weight: 800;
}

.hero-statement span {
  color: var(--purple);
  font-weight: 760;
}

.hero-actions {
  margin-top: 1.65rem;
  display: flex;
  justify-content: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.button {
  min-width: 210px;
  padding: 0.95rem 1.35rem;
  border-radius: 0.6rem;
  text-align: center;
  text-decoration: none;
  color: var(--text);
  font-weight: 680;
  font-size: 1rem;
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  transition: transform 140ms ease, border-color 140ms ease, background 140ms ease;
}

.button.primary {
  background: linear-gradient(135deg, #7131d4, #a45cff);
  border-color: rgba(198, 154, 255, 0.55);
  box-shadow: 0 14px 36px rgba(113, 49, 212, 0.38);
}

.button.secondary {
  background: rgba(255,255,255,0.025);
}

.button:hover {
  transform: translateY(-1px);
  border-color: var(--border-strong);
}

.button-svg {
  width: 1.25rem;
  height: 1.25rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.button-icon {
  font-size: 1.2rem;
  line-height: 1;
}

.hero-side {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
}

.side-card {
  padding: 1rem 1.05rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background:
    linear-gradient(180deg, rgba(20, 21, 38, 0.74), rgba(8, 9, 20, 0.82));
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.035);
}

.side-card h2 {
  margin: 0 0 0.65rem;
  color: #fff;
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.side-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.91rem;
}

.mini-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mini-list li {
  position: relative;
  padding-left: 1.1rem;
  margin: 0.42rem 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.mini-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--purple-soft);
  font-weight: 800;
}

.mini-facts {
  margin: 0;
}

.mini-facts div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.36rem 0;
  border-bottom: 1px solid rgba(188, 134, 255, 0.12);
}

.mini-facts div:last-child {
  border-bottom: 0;
}

.mini-facts dt {
  color: var(--muted);
}

.mini-facts dd {
  margin: 0;
  color: #fff;
  text-align: right;
}

@media (max-width: 1150px) {
  .site-header {
    height: auto;
    padding: 1rem 1.5rem;
    flex-direction: column;
    align-items: flex-start;
  }

  .main-nav {
    flex-wrap: wrap;
  }

  .main-nav a.active::after {
    bottom: -0.45rem;
  }

  .hero-layout {
    grid-template-columns: 1fr;
  }

  .hero-side {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 720px) {
  main {
    padding: 1rem;
  }

  .brand {
    min-width: 0;
  }

  .dust-cloud {
    width: 110px;
  }

  .hero-card {
    padding: 1rem;
  }

  .hero-statement {
    font-size: 1.35rem;
  }

  .hero-side {
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }
}

.two-column {

    display:grid;

    grid-template-columns:1fr 1fr;

    gap:1.4rem;

    margin:2rem 0;

}

@media (max-width:900px){

.two-column{

    grid-template-columns:1fr;

}

}

.download-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.content-card {
  padding: 1.35rem;
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background:
    linear-gradient(180deg, rgba(20, 21, 38, 0.74), rgba(8, 9, 20, 0.82));
}

.content-card h2 {
  margin-top: 0;
  color: #fff;
}

.content-card p,
.content-card li {
  color: var(--muted);
}

pre {
  overflow-x: auto;
  padding: 1rem;
  border-radius: 0.65rem;
  border: 1px solid rgba(188, 134, 255, 0.18);
  background: rgba(0, 0, 0, 0.38);
}

code {
  color: #f4f0ff;
}

@media (max-width: 850px) {
  .download-grid {
    grid-template-columns: 1fr;
  }
}