* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(255, 122, 89, 0.10), transparent 30%),
    radial-gradient(circle at top right, rgba(124, 92, 255, 0.10), transparent 26%),
    #f7f7fb;
  color: #111;
  line-height: 1.6;
}

img {
  display: block;
  max-width: 100%;
}

section {
  padding: 90px 20px;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.header-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.logo {
  height: 50px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.nav a {
  text-decoration: none;
  color: #111;
  font-weight: 700;
  padding: 8px 12px;
  border-radius: 999px;
  transition: background 0.2s ease;
}

.nav a:hover {
  background: rgba(0, 0, 0, 0.05);
}

/* Headings */
.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  text-align: center;
  margin: 0 0 36px;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.section-heading {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 48px;
}

.section-heading .section-title {
  margin-bottom: 12px;
}

.section-heading p {
  margin: 0;
  color: #5f6470;
  font-size: 1.05rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 14px 24px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn.large {
  font-size: 18px;
  padding: 16px 28px;
}

.primary {
  background: linear-gradient(45deg, #ff7a59, #7c5cff);
  color: white;
  box-shadow: 0 14px 30px rgba(124, 92, 255, 0.22);
}

/* Hero */
.hero {
  text-align: center;
  padding: 110px 20px 90px;
}

.hero h1 {
  font-size: clamp(3rem, 6vw, 5rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
  margin: 0 0 22px;
}

.hero p {
  max-width: 760px;
  margin: 0 auto 30px;
  font-size: 1.12rem;
  color: #5f6470;
}

.gradient-text {
  background: linear-gradient(45deg, #ff7a59, #7c5cff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* Services */
#services {
  padding-top: 50px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.service-card {
  background: rgba(255, 255, 255, 0.92);
  padding: 28px;
  border-radius: 20px;
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.06);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.service-card h3 {
  margin: 0 0 12px;
  font-size: 1.3rem;
}

.service-card p {
  margin: 0 0 16px;
  color: #5f6470;
}

.service-card ul {
  margin: 0;
  padding-left: 20px;
}

.service-card li {
  margin-bottom: 10px;
}

/* Clients */
#clients {
  background: rgba(255, 255, 255, 0.45);
}

.carousel {
  overflow: hidden;
  width: 100%;
  position: relative;
}

.carousel::before,
.carousel::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 60px;
  z-index: 2;
  pointer-events: none;
}

.carousel::before {
  left: 0;
  background: linear-gradient(to right, #f7f7fb, transparent);
}

.carousel::after {
  right: 0;
  background: linear-gradient(to left, #f7f7fb, transparent);
}

.carousel-track {
  display: flex;
  align-items: center;
  gap: 20px;
  width: max-content;
  animation: scroll 30s linear infinite;
}

.carousel-track img {
  height: 150px;
  width: auto;
  border-radius: 16px;
  flex-shrink: 0;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.10);
}

.carousel:hover .carousel-track {
  animation-play-state: paused;
}

@keyframes scroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(calc(-50% - 10px));
  }
}

/* Testimonial strip */
.testimonial-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.testimonial-card {
  background: white;
  padding: 24px;
  border-radius: 20px;
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.06);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.testimonial-card.equal {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.quote {
  margin: 0 0 16px;
  color: #20232b;
}

.name {
  margin: 0;
  font-weight: 700;
}

.video-card {
  justify-content: flex-start;
}

.video-label {
  margin: 0 0 14px;
  font-weight: 700;
}

.video-wrapper.fixed {
  position: relative;
  width: 100%;
  height: 180px;
  border-radius: 14px;
  overflow: hidden;
  margin-top: auto;
}

.video-wrapper.fixed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* FAQ */
#faq {
  background: rgba(255, 255, 255, 0.35);
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: white;
  border-radius: 16px;
  padding: 18px 20px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.faq-item summary {
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 24px;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 0;
  font-size: 20px;
  line-height: 1;
}

.faq-item[open] summary::after {
  content: "–";
}

.faq-item p {
  margin: 12px 0 0;
  color: #5f6470;
}

/* CTA */
.cta {
  text-align: center;
}

.cta h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin: 0 0 12px;
  line-height: 1.08;
}

.cta p {
  max-width: 680px;
  margin: 0 auto 24px;
  color: #5f6470;
}

/* Responsive */
@media (max-width: 900px) {
  .services-grid {
    grid-template-columns: 1fr;
  }

  .testimonial-strip {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  section {
    padding: 75px 18px;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 12px 0;
  }

  .nav {
    gap: 10px;
  }

  .hero {
    padding: 88px 18px 72px;
  }

  .carousel-track img {
    height: 110px;
  }

  .carousel-track {
    gap: 14px;
    animation-duration: 24s;
  }

  .video-wrapper.fixed {
    height: 220px;
  }
}