:root {
  font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  color: #fff;
  background-color: #03040a;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: #03040a;
}

a {
  color: inherit;
  text-decoration: none;
}

.viewport {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

.slideshow,
.slide {
  position: absolute;
  inset: 0;
}

.slideshow {
  filter: brightness(0.8);
}

.slide {
  background-size: cover;
  background-position: center;
  animation: fade 18s infinite;
  opacity: 0;
}

.slide-1 {
  background-image: url('https://images.unsplash.com/photo-1500530855697-b586d89ba3ee?auto=format&fit=crop&w=1600&q=80');
}

.slide-2 {
  background-image: url('https://images.unsplash.com/photo-1500534314209-a25ddb2bd429?auto=format&fit=crop&w=1600&q=80');
  animation-delay: 6s;
}

.slide-3 {
  background-image: url('https://images.unsplash.com/photo-1520607162513-77705c0f0d4a?auto=format&fit=crop&w=1600&q=80');
  animation-delay: 12s;
}

@keyframes fade {
  0%,
  33% {
    opacity: 1;
    transform: scale(1);
  }
  45%,
  100% {
    opacity: 0;
    transform: scale(1.05);
  }
}

.overlay {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.5rem;
  padding: 4vw;
  background: linear-gradient(
    120deg,
    rgba(3, 4, 10, 0.9),
    rgba(3, 4, 10, 0.5) 60%,
    transparent
  );
}

.logo {
  width: 120px;
  height: auto;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  font-size: 0.85rem;
  letter-spacing: 0.2rem;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(2.6rem, 5vw, 3.8rem);
  margin: 0;
  letter-spacing: 0.1rem;
}

.lead {
  font-size: 1.05rem;
  max-width: 540px;
  margin: 0;
  color: rgba(255, 255, 255, 0.8);
}

.business-scope {
  background: rgba(3, 4, 10, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 24px;
  padding: 1.8rem;
  backdrop-filter: blur(10px);
}

.business-scope header span {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.4rem;
  opacity: 0.6;
}

.business-scope h2 {
  margin: 0.2rem 0 1.2rem;
  font-size: 1.4rem;
}

.scope-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.scope-grid article {
  border-left: 3px solid rgba(255, 255, 255, 0.2);
  padding-left: 1.2rem;
}

.scope-grid h3 {
  margin: 0 0 0.6rem;
  font-size: 1rem;
  letter-spacing: 0.2rem;
}

.scope-grid p {
  margin: 0 0 0.6rem;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.85);
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 2.4rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.3rem;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.4);
  transition: background 0.2s ease, transform 0.2s ease;
}

.cta.primary {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  color: #ffffff;
}

.cta.primary:visited {
  color: #ffffff;
}

.cta.primary:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.cta-group {
  margin: 1.5rem auto 0;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  width: min(280px, 100%);
}

.cta-group .cta {
  width: 100%;
  text-align: center;
}

@media (max-width: 768px) {
  .overlay {
    padding: 12vw 6vw;
  }

  .business-scope {
    padding: 1.5rem;
  }
}

body.no-scroll {
  overflow: hidden;
}

.contact-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.contact-modal.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 4, 10, 0.7);
  backdrop-filter: blur(6px);
}

.modal-card {
  position: relative;
  z-index: 1;
  background: #0a0e1d;
  color: #fff;
  padding: 2.5rem;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.35);
  min-width: min(420px, 90vw);
}

.modal-card .badge {
  border: none;
  padding: 0;
  letter-spacing: 0.4rem;
  opacity: 0.6;
}

.modal-card h2 {
  margin: 0.6rem 0 1.5rem;
}

.modal-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.modal-card li {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 0.6rem;
}

.modal-card strong {
  font-size: 1rem;
}

.modal-card span {
  font-size: 1.1rem;
  letter-spacing: 0.05rem;
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  border: none;
  background: transparent;
  color: #fff;
  font-size: 1.6rem;
  cursor: pointer;
}