* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: #1e293b;
  background: #ffffff;
}
body.no-scroll {
  overflow: hidden;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
ul,
ol {
  list-style: none;
}
button,
input,
textarea {
  font: inherit;
  border: none;
  outline: none;
}
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.section-title {
  font-size: clamp(24px, 3vw, 40px);
  font-weight: 700;
  text-align: center;
  margin-bottom: 48px;
  color: #1a1a2e;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.25s ease;
  cursor: pointer;
}
.btn--primary {
  background: #2563eb;
  color: #fff;
  box-shadow: 0 8px 32px rgba(37, 99, 235, 0.2);
}
.btn--primary:hover {
  background: #134cca;
}
.btn--ghost {
  background: transparent;
  color: #2563eb;
  border: 2px solid #2563eb;
}
.btn--ghost:hover {
  background: rgba(37, 99, 235, 0.08);
}
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid transparent;
  transition: all 0.25s ease;
}
.header--scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border-bottom-color: #e2e8f0;
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}
.header__logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-weight: 700;
  color: #1a1a2e;
}
.header__logo img {
  width: 40px;
  height: 40px;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
}
.nav a {
  color: #1e293b;
  font-weight: 500;
  transition: all 0.25s ease;
}
.nav a:hover {
  color: #2563eb;
}
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  cursor: pointer;
  padding: 8px;
}
.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: #1a1a2e;
  transition: all 0.25s ease;
}
.burger--active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.burger--active span:nth-child(2) {
  opacity: 0;
}
.burger--active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.hero {
  padding: 140px 0 100px;
  background: linear-gradient(135deg, #f4f6fb 0%, #ffffff 100%);
}
.hero__inner {
  max-width: 720px;
}
.hero__title {
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 800;
  color: #1a1a2e;
  margin-bottom: 20px;
  line-height: 1.15;
}
.hero__subtitle {
  font-size: clamp(18px, 2vw, 22px);
  color: #64748b;
  margin-bottom: 36px;
}
.hero__btns {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.services,
.advantages,
.process,
.reviews {
  padding: 80px 0;
}
.services {
  background: #ffffff;
}
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card {
  padding: 32px 24px;
  border-radius: 16px;
  background: #f4f6fb;
  border: 1px solid #e2e8f0;
  transition: all 0.25s ease;
}
.card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  transform: translateY(-4px);
}
.card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
}
.card__title {
  font-size: 20px;
  margin-bottom: 8px;
  color: #1a1a2e;
}
.card__text {
  color: #64748b;
}
.advantages {
  background: #f4f6fb;
}
.advantages__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.advantage {
  text-align: center;
  padding: 24px 16px;
}
.advantage img {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
}
.advantage h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: #1a1a2e;
}
.advantage p {
  color: #64748b;
  font-size: 15px;
}
.stats {
  padding: 60px 0;
  background: #1a1a2e;
  color: #fff;
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat__num {
  display: block;
  font-size: clamp(36px, 4vw, 56px);
  font-weight: 800;
  color: #2563eb;
  margin-bottom: 8px;
}
.stat__label {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
}
.process__steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.step {
  padding: 32px 24px;
  border-radius: 16px;
  background: #ffffff;
  border: 1px solid #e2e8f0;
}
.step__num {
  display: block;
  font-size: 32px;
  font-weight: 800;
  color: #2563eb;
  margin-bottom: 12px;
}
.step h3 {
  font-size: 20px;
  margin-bottom: 8px;
  color: #1a1a2e;
}
.step p {
  color: #64748b;
}
.reviews__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  padding: 32px 24px;
  border-radius: 16px;
  background: #f4f6fb;
  border: 1px solid #e2e8f0;
}
.review-card__avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #2563eb;
  color: #fff;
  font-weight: 700;
  margin-bottom: 16px;
}
.review-card__name {
  font-weight: 700;
  margin-bottom: 4px;
  color: #1a1a2e;
}
.review-card__role {
  font-size: 14px;
  color: #64748b;
  margin-bottom: 16px;
}
.review-card__text {
  color: #1e293b;
  margin-bottom: 16px;
}
.review-card__stars {
  color: #f59e0b;
  letter-spacing: 2px;
}
.cta {
  padding: 80px 0;
  background: #f4f6fb;
}
.cta__sub {
  text-align: center;
  color: #64748b;
  margin: -32px 0 32px;
}
.cta__form {
  max-width: 560px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.cta__form input,
.cta__form textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  background: #ffffff;
  transition: all 0.25s ease;
}
.cta__form input:focus,
.cta__form textarea:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}
.cta__success {
  text-align: center;
  font-size: 20px;
  font-weight: 600;
  color: #2563eb;
  padding: 24px;
}
.footer {
  background: #1a1a2e;
  color: rgba(255, 255, 255, 0.8);
  padding: 48px 0 24px;
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  margin-bottom: 32px;
}
.footer__logo {
  display: block;
  font-weight: 700;
  font-size: 18px;
  color: #fff;
  margin-bottom: 8px;
}
.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}
.footer__nav a:hover {
  color: #fff;
}
.footer__copy {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
}
.card,
.step,
.advantage,
.review-card {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.card.animate,
.step.animate,
.advantage.animate,
.review-card.animate {
  opacity: 1;
  transform: translateY(0);
}
@media (max-width: 768px) {
  .nav {
    position: fixed;
    inset: 72px 0 auto 0;
    flex-direction: column;
    background: #ffffff;
    padding: 24px;
    border-bottom: 1px solid #e2e8f0;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.25s ease;
  }
  .nav--open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .burger {
    display: flex;
  }
  .services__grid,
  .advantages__grid,
  .process__steps,
  .reviews__grid,
  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer__inner {
    flex-direction: column;
  }
}
@media (max-width: 480px) {
  .hero {
    padding: 120px 0 80px;
  }
  .services__grid,
  .advantages__grid,
  .process__steps,
  .reviews__grid,
  .stats__grid {
    grid-template-columns: 1fr;
  }
  .hero__btns {
    flex-direction: column;
  }
  .hero__btns .btn {
    width: 100%;
  }
}