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

:root {
  --primary: #000000;
  --secondary: #ffffff;
  --gray-50: #fafafa;
  --gray-100: #f5f5f5;
  --gray-200: #e5e5e5;
  --gray-300: #d4d4d4;
  --gray-400: #a3a3a3;
  --gray-500: #737373;
  --gray-600: #525252;
  --gray-700: #404040;
  --gray-800: #262626;
  --gray-900: #171717;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1),
    0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1),
    0 8px 10px -6px rgb(0 0 0 / 0.1);
}

.tlt-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Hero Section */
.tlt-hero {
  position: relative;
  background: var(--secondary);
  padding: 80px 0 120px;
}

.tlt-hero-image {
  width: 100%;
  object-fit: cover;
  border-radius: 16px;
  margin-bottom: 60px;
  box-shadow: var(--shadow-xl);
}

.tlt-hero-content {
  text-align: center;
  max-width: 1000px;
  margin: 0 auto;
}

.tlt-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gray-900);
  color: var(--secondary);
  border: 2px solid var(--gray-800);
  padding: 12px 24px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 32px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.tlt-hero h1 {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 900;
  margin-bottom: 24px;
  color: var(--primary);
  line-height: 1;
  letter-spacing: -3px;
}

.tlt-hero-subtitle {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 300;
  margin-bottom: 16px;
  color: var(--gray-600);
  letter-spacing: 0.5px;
}

.tlt-hero-description {
  font-size: 1.25rem;
  color: var(--gray-500);
  margin-bottom: 48px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  font-style: italic;
}

.tlt-hero-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  margin-top: 60px;
}

.tlt-info-card {
  background: var(--secondary);
  border: 2px solid var(--gray-200);
  padding: 32px 24px;
  border-radius: 16px;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
}

.tlt-info-card:hover {
  border-color: var(--gray-800);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.tlt-info-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 4px;
  background: var(--primary);
  border-radius: 0 0 4px 4px;
}

.tlt-info-icon {
  font-size: 32px;
  margin-bottom: 16px;
  display: block;
  filter: grayscale(100%);
}

.tlt-info-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--primary);
}

.tlt-info-desc {
  font-size: 14px;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}

/* Sections */
.tlt-section {
  padding: 100px 0;
  position: relative;
}

.tlt-section-alt {
  background: var(--gray-50);
}

.tlt-section-dark {
  background: var(--gray-900);
  color: var(--secondary);
}

.tlt-section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 80px;
}

.tlt-section-badge {
  display: inline-block;
  background: var(--primary);
  color: var(--secondary);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.tlt-section-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  margin-bottom: 24px;
  color: var(--primary);
  letter-spacing: -1px;
}

.tlt-section-dark .tlt-section-title {
  color: var(--secondary);
}

.tlt-section-description {
  font-size: 1.25rem;
  color: var(--gray-600);
  line-height: 1.6;
  font-weight: 300;
}

.tlt-section-dark .tlt-section-description {
  color: var(--gray-400);
}

/* About Section */
.tlt-about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 48px;
}

.tlt-about-card {
  background: var(--secondary);
  padding: 48px;
  border-radius: 0;
  border: 2px solid var(--gray-200);
  transition: all 0.3s ease;
  position: relative;
}

.tlt-about-card:hover {
  border-color: var(--gray-800);
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.tlt-about-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: var(--primary);
}

.tlt-card-number {
  position: absolute;
  top: -20px;
  right: 24px;
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: var(--secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 18px;
}

.tlt-card-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--primary);
}

.tlt-card-description {
  color: var(--gray-600);
  line-height: 1.7;
  font-size: 1.1rem;
}

/* Features Section */
.tlt-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 48px;
}

.tlt-feature-card {
  background: var(--secondary);
  padding: 48px 32px;
  border: 2px solid var(--gray-200);
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
}

.tlt-feature-card:hover {
  border-color: var(--gray-800);
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.tlt-feature-number {
  position: absolute;
  top: -1px;
  left: -1px;
  width: 60px;
  height: 60px;
  background: var(--primary);
  color: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 20px;
}

.tlt-feature-icon {
  font-size: 48px;
  margin: 40px 0 24px;
  display: block;
  filter: grayscale(100%);
}

.tlt-feature-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--primary);
}

.tlt-feature-description {
  color: var(--gray-600);
  line-height: 1.6;
}

/* E3 Tech Section */
.tlt-e3tech-grid {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 80px;
  align-items: start;
}

.tlt-e3tech-info h3 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 32px;
  color: var(--secondary);
  letter-spacing: -1px;
}

.tlt-e3tech-description {
  font-size: 1.25rem;
  color: var(--gray-400);
  margin-bottom: 48px;
  line-height: 1.7;
}

.tlt-solutions-list {
  list-style: none;
  margin-bottom: 48px;
}

.tlt-solutions-list li {
  padding: 20px 0;
  border-bottom: 1px solid var(--gray-700);
  font-size: 1.125rem;
  color: var(--secondary);
  display: flex;
  align-items: center;
  font-weight: 500;
  transition: all 0.3s ease;
}

.tlt-solutions-list li:hover {
  padding-left: 20px;
  color: var(--gray-300);
}

.tlt-solutions-list li:before {
  content: "→";
  margin-right: 20px;
  color: var(--gray-400);
  font-weight: 900;
  font-size: 1.5rem;
  transition: all 0.3s ease;
}

.tlt-solutions-list li:hover:before {
  color: var(--secondary);
  transform: translateX(5px);
}

.tlt-contact-card {
  background: var(--secondary);
  border: 2px solid var(--gray-700);
  padding: 48px;
  position: relative;
}

.tlt-link {
  color: var(--secondary);
  text-decoration: none;
}

.tlt-contact-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: var(--secondary);
}

.tlt-contact-avatar {
  width: 120px;
  height: 120px;
  background: var(--gray-800);
  color: var(--secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  margin: 0 auto 32px;
  border: 4px solid var(--gray-600);
}

.tlt-contact-name {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--primary);
  text-align: center;
}

.tlt-contact-title {
  color: var(--gray-600);
  margin-bottom: 32px;
  font-size: 1.125rem;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}

.tlt-contact-description {
  color: var(--gray-700);
  margin-bottom: 32px;
  text-align: center;
  line-height: 1.6;
}

.tlt-contact-email {
  display: block;
  background: var(--primary);
  color: var(--secondary);
  padding: 16px 24px;
  text-decoration: none;
  font-weight: 600;
  text-align: center;
  transition: all 0.3s ease;
  font-size: 1.1rem;
  letter-spacing: 0.5px;
}

.tlt-contact-email:hover {
  background: var(--gray-800);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Organizer Section */
.tlt-organizer-card {
  background: var(--secondary);
  border: 2px solid var(--gray-200);
  padding: 60px;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

.tlt-organizer-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 8px;
  background: var(--primary);
}

.tlt-organizer-icon {
  width: 100px;
  height: 100px;
  background: var(--primary);
  color: var(--secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  margin: 0 auto 32px;
}

.tlt-organizer-name {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--primary);
  text-align: center;
}

.tlt-organizer-description {
  color: var(--gray-600);
  line-height: 1.7;
  font-size: 1.125rem;
  text-align: center;
}

/* Footer */
footer {
  background: var(--primary);
  color: var(--secondary);
  padding: 80px 0 40px;
}

.tlt-footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 48px;
  margin-bottom: 48px;
}

.tlt-footer-section h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--secondary);
}

.tlt-footer-section p {
  color: var(--gray-400);
  line-height: 1.7;
}

.tlt-footer-bottom {
  border-top: 1px solid var(--gray-700);
  padding-top: 32px;
  text-align: center;
  color: var(--gray-500);
}

/* Scroll Progress */
.tlt-scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gray-200);
  z-index: 1000;
}

.tlt-scroll-progress-bar {
  height: 100%;
  background: var(--primary);
  width: 0%;
  transition: width 0.1s ease;
}

.tlt-contact-card-avatar-img {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .tlt-e3tech-grid {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .tlt-contact-card {
    margin-top: 40px;
  }
}

@media (max-width: 768px) {
  .tlt-hero {
    padding: 40px 0 80px;
  }

  .tlt-hero-image {
    height: 300px;
    margin-bottom: 40px;
  }

  .tlt-section {
    padding: 80px 0;
  }

  .tlt-about-grid,
  .tlt-features-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .tlt-about-card,
  .tlt-feature-card,
  .tlt-organizer-card {
    padding: 32px;
  }

  .tlt-hero-info {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .tlt-info-card {
    padding: 24px 16px;
  }

  .tlt-e3tech-grid {
    gap: 40px;
  }
}