:root {
  --black: #000;
  --gray: #fff;
  --accent: #554AEE;
  --hover-accent: #9500ff;
  --cta-gradient: linear-gradient(90deg, #9945FF 0%, #FC6746 100%);
}

body {
  background: var(--black);
  color: var(--gray);
  font-family: 'Montserrat', Arial, sans-serif;
  margin: 0;
  min-height: 100vh;
  font-size: 1.08rem;
}
header {
  width: 100%;
  background: var(--black);
  padding: 0 0 0 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid #19181F;
}
.navbar {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  padding: 22px 24px 16px 24px;
  justify-content: space-between;
}
.logo {
  width: 110px;
}
.nav {
  display: flex;
  gap: 36px;
}
.nav > .nav-item {
  position: relative;
}
.nav > .nav-item > a {
  color: var(--gray);
  text-decoration: none;
  font-size: 1.07rem;
  font-weight: 600;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.nav > .nav-item > a.active,
.nav > .nav-item > a:hover {
  border-bottom: 2px solid var(--accent);
  color: var(--accent);
}
.nav-dropdown {
  display: none;
  position: absolute;
  left: 0;
  top: 30px;
  background: var(--black);
  padding: 40px 48px 40px 40px;
  min-width: 640px;
  border-top: 2px solid var(--accent);
  box-shadow: 0 8px 40px #0b002033;
  gap: 42px;
  z-index: 15;
}
.nav-item:hover .nav-dropdown { display: flex; }

.dropdown-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px 70px;
}
.dropdown-list span {
  display: block;
  margin-bottom: 18px;
  font-size: 1.07rem;
  color: var(--gray);
  cursor: pointer;
  transition: color 0.2s, border 0.2s;
  border: 2px solid transparent;
  padding: 2px 9px;
  border-radius: 4px;
}
.dropdown-list span:hover, .dropdown-list .active {
  color: var(--accent);
  border: 2px solid var(--accent);
  font-weight: 600;
}
.promo {
  background: var(--cta-gradient);
  color: var(--gray);
  border-radius: 17px;
  padding: 36px 30px;
  min-width: 370px;
  margin-left: 54px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  font-size: 1.18rem;
  font-weight: 500;
  box-shadow: 0 9px 29px #9945FF22;
}
.promo .promo-title { font-size: 0.94rem; margin-bottom: 9px; }
.promo .promo-btn {
  margin-top: 22px;
  color: var(--gray);
  border: 1.7px solid var(--gray);
  background: none;
  border-radius: 5px;
  padding: 8px 19px;
  font-size: 1.01rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  transition: background 0.15s, color 0.15s;
}
.promo .promo-btn:hover { background: var(--gray); color: #480099; }

.contact-btn {
  padding: 8px 22px;
  border: 2px solid var(--gray);
  background: none;
  color: var(--gray);
  font-weight: 600;
  font-size: 1.07rem;
  border-radius: 7px;
  transition: border 0.2s, background 0.2s, color 0.2s;
  cursor: pointer;
  margin-left: 30px;
}
.contact-btn:hover {
  border: 2px solid var(--accent);
  color: var(--accent);
  background: #18171b;
}
.hero {
  max-width: 1220px;
  margin: 44px auto 0 auto;
  padding: 44px 28px 0 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  min-height: 63vh;
  gap: 30px;
}
.hero-left {
  flex: 0 0 500px;
  min-width: 330px;
}
.hero-headline {
  font-size: 4rem;
  font-weight: 700;
  letter-spacing: -2.5px;
  color: var(--gray);
  margin-bottom: 28px;
  line-height: 0.98;
}
@media (max-width: 900px) {
  .hero-headline { font-size: 2.4rem; }
  .hero { flex-direction: column; }
}
.hero-right {
  flex: 1 1 340px;
  min-width: 270px;
}
.hero-right .hero-desc {
  color: var(--gray);
  font-size: 1.09rem;
  max-width: 38vw;
  margin-bottom: 32px;
  line-height: 1.65;
}
.hero-right .hero-btn {
  margin-top: 8px;
  background: none;
  border: 1.7px solid var(--gray);
  color: var(--gray);
  font-weight: 600;
  font-size: 1.09rem;
  padding: 10px 23px;
  border-radius: 7px;
  cursor: pointer;
  transition: background .2s, color .2s, border .2s;
  box-shadow: 0 4px 28px #9945FF04;
  margin-right: 8px;
}
.hero-right .hero-btn:hover { border-color: var(--accent); color: var(--accent); background: #191924; }
.section {
  max-width: 1150px;
  margin: 65px auto 0 auto;
  padding: 0 28px 36px 28px;
  color: var(--gray);
}
.section-title {
  font-size: 2.55rem;
  font-weight: 700;
  margin-bottom: 36px;
}
.section-desc {
  font-size: 1.13rem;
  max-width: 680px;
  margin-bottom: 35px;
}
footer {
  background: #0c0c0e;
  color: #8c8d92;
  text-align: center;
  font-size: 1rem;
  padding: 28px 0 18px 0;
  margin-top: 44px;
  border-top: 1.3px solid #19181F;
}
a { color: var(--accent); }
::-webkit-scrollbar { background: #0b0b0e; width: 8px; }
::-webkit-scrollbar-thumb { background: #232227; border-radius: 8px; }
@media (max-width: 650px) {
  .hero, .section { padding-left: 2vw; padding-right: 2vw; }
  .hero-right .hero-desc { max-width: 95vw; }
}