:root {
  --primary: #2F80EC;
  --primary-dark: #2366D7;
  --primary-darker: #1E59B7;
  --primary-light: rgba(47, 128, 236, 0.08);
  --primary-glow: rgba(47, 128, 236, 0.15);
  --white: #FFFFFF;
  --bg-light: #F5F7FA;
  --bg-white: #FFFFFF;
  --text-dark: #1A1F2E;
  --text-body: #4A5568;
  --text-muted: #718096;
  --border: #E2E8F0;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
  --radius: 8px;
  --radius-lg: 12px;
  --transition: 0.3s ease;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text-body);
  line-height: 1.6;
  background: var(--bg-white);
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--text-dark);
}

.logo-img {
  width: 100px;
  height: 100px;
  object-fit: contain;
}

.nav-list {
  display: flex;
  gap: 32px;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-body);
  padding: 4px 0;
  position: relative;
  transition: var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Hero */
.hero {
  padding: 180px 0 120px;
  background: url('102617.jpg') center / cover no-repeat;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26, 31, 46, 0.85) 0%, rgba(26, 31, 46, 0.65) 100%);
  z-index: 0;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-bg {
  display: none;
}

.hero-content {
  max-width: 700px;
  margin: 0 auto;
}

.hero-title {
  font-size: 2.8rem;
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 36px;
  line-height: 1.7;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--primary-glow);
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.section-title span {
  color: var(--primary);
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* About */
.about {
  padding: 100px 0;
  background: var(--bg-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.about-text p {
  margin-bottom: 16px;
  color: var(--text-body);
  line-height: 1.8;
}

.about-values {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.value-card {
  background: var(--bg-light);
  padding: 24px;
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--primary);
  transition: var(--transition);
}

.value-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.value-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 4px;
}

.value-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.value-icon {
  color: var(--primary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
}

.value-icon svg {
  flex-shrink: 0;
}

/* Services */
.services {
  padding: 100px 0;
  background: var(--bg-light);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  background: var(--bg-white);
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.service-icon {
  color: var(--primary);
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Contact */
.contact {
  padding: 60px 0;
  background: var(--bg-white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-text h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.contact-text p {
  color: var(--text-muted);
  line-height: 1.7;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-dark);
}

.form-group input,
.form-group textarea {
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--text-dark);
  background: var(--bg-light);
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
  background: var(--bg-white);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* Footer */
.footer {
  background: var(--text-dark);
  padding: 40px 0;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-logo {
  width: 100px;
  height: 50px;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.footer-name {
  color: var(--white);
  font-weight: 600;
  font-size: 0.9rem;
}

.footer-email {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: 2px;
}

.footer-copy {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.4);
}

/* Responsive */
@media (max-width: 640px) {
  .hero {
    padding: 130px 0 80px;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-white);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 60px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }

  .nav.active {
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    align-items: center;
    gap: 28px;
  }

  .nav-link {
    font-size: 1.1rem;
    color: var(--text-body);
  }

  .nav-link:hover,
  .nav-link.active {
    color: var(--primary);
  }

  .nav-link::after {
    background: var(--primary);
  }

  .footer-content {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .footer-left {
    flex-direction: column;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .service-card {
    padding: 28px 20px;
  }
}