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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #2d3748;
  background-color: #ffffff;
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.header {
  padding: 8px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  padding: 10px;
  backdrop-filter: blur(50px);
  background-color: rgba(0, 0, 0, 0);
  border-radius: 10px;
  opacity: 1;
}

.logo img {
  height: 40px;
  width: auto;
}

.logo-text {
  font-size: 24px;
  font-weight: 700;
  color: #1a202c;
}

.nav {
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 10px;
  backdrop-filter: blur(50px);
  background-color: rgba(0, 0, 0, 0);
  border-radius: 100px;
  opacity: 1;
}

.nav-link {
  padding: 10px 20px;
  text-decoration: none;
  color: #4a5568;
  font-size: 15px;
  font-weight: 500;
  border-radius: 9999px;
  transition: all 0.2s;
}

.nav-link:hover {
  background-color: #f7fafc;
  color: #1a202c;
}

.nav-link.active {
  background-color: #4a5568;
  color: #ffffff;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  width: 40px;
  height: 40px;
  position: relative;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background-color: #1a202c;
  transition: all 0.3s ease;
  border-radius: 2px;
  position: absolute;
}

.hamburger span:nth-child(1) {
  top: 12px;
}

.hamburger span:nth-child(2) {
  top: 19px;
}

.hamburger span:nth-child(3) {
  top: 26px;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg);
  top: 19px;
}

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

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg);
  top: 19px;
}

main {
  min-height: calc(100vh - 88px);
}

section {
  padding: 0;
}

.spacing-top-none { padding-top: 0; }
.spacing-top-small { padding-top: 40px; }
.spacing-top-normal { padding-top: 60px; }
.spacing-top-large { padding-top: 80px; }

.spacing-bottom-none { padding-bottom: 0; }
.spacing-bottom-small { padding-bottom: 40px; }
.spacing-bottom-normal { padding-bottom: 60px; }
.spacing-bottom-large { padding-bottom: 80px; }

.hero-section {
  text-align: center;
}

.hero-title {
  font-weight: 700;
  line-height: 1.2;
  color: #1a202c;
  margin-bottom: 20px;
}

.hero-title.heading-h1 {
  font-size: 56px;
}

.hero-title.heading-h2 {
  font-size: 44px;
}

.hero-title.heading-h3 {
  font-size: 36px;
}

.hero-subtitle {
  font-size: 20px;
  color: #4a5568;
  max-width: 700px;
  margin: 0 auto;
}

.section-title {
  font-weight: 700;
  color: #1a202c;
  margin-bottom: 20px;
}

.heading-h1 {
  font-size: 48px;
}

.heading-h2 {
  font-size: 36px;
}

.heading-h3 {
  font-size: 28px;
}

.section-text {
  font-size: 18px;
  color: #4a5568;
  line-height: 1.8;
  max-width: 800px;
}

.text-section-bordered .container {
  border-bottom: 1px solid #e5e7eb;
  padding-bottom: 20px;
}

.text-section-split {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 60px;
  align-items: start;
}

.section-title-left {
  margin-bottom: 0;
}

.section-text-right {
  max-width: 100%;
}

.image-section {
  padding: 60px 0;
}

.image-container {
  border-radius: 16px;
  padding: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 500px;
}

.section-image {
  max-height: 436px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  border-radius: 0;
}

.image-caption {
  text-align: center;
  margin-top: 16px;
  color: #718096;
  font-size: 14px;
}

.case-study-content {
  display: grid;
  grid-template-columns: 30% 70%;
  gap: 0;
  align-items: stretch;
}

.case-study-text {
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.case-study-label {
  display: inline-block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #718096;
  margin-bottom: 16px;
}

.case-study-title {
  font-size: 40px;
  font-weight: 700;
  color: #1a202c;
  margin-bottom: 20px;
  line-height: 1.2;
}

.case-study-description {
  font-size: 18px;
  color: #4a5568;
  line-height: 1.8;
  margin-bottom: 32px;
}

.case-study-button {
  padding: 12px 32px;
  background-color: #4a5568;
  color: #ffffff;
  border: none;
  border-radius: 9999px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  align-self: flex-start;
}

.case-study-button:hover {
  background-color: #2d3748;
  transform: translateY(-1px);
}

.case-study-button-locked {
  background-color: #3182ce;
}

.case-study-button-locked:hover {
  background-color: #2c5aa0;
}

.button-lock-icon {
  flex-shrink: 0;
}

.case-study-image {
  padding: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}

.case-study-img {
  max-height: 336px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  border-radius: 0;
}

.password-protected-section {
  position: relative;
  min-height: 300px;
}

.password-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  padding: 48px 24px;
}

.password-prompt {
  max-width: 400px;
  width: 100%;
  text-align: center;
}

.password-icon {
  display: inline-flex;
  padding: 16px;
  background-color: #f7fafc;
  border-radius: 50%;
  color: #4a5568;
  margin-bottom: 24px;
}

.password-title {
  font-size: 24px;
  font-weight: 700;
  color: #1a202c;
  margin-bottom: 8px;
}

.password-description {
  font-size: 16px;
  color: #718096;
  margin-bottom: 24px;
}

.password-input-group {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.password-input {
  flex: 1;
  padding: 12px 16px;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  font-size: 16px;
  outline: none;
  transition: border-color 0.2s;
}

.password-input:focus {
  border-color: #4a5568;
}

.password-button {
  padding: 12px 24px;
  background-color: #4a5568;
  color: #ffffff;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.password-button:hover {
  background-color: #2d3748;
  transform: translateY(-1px);
}

.password-button:active {
  transform: translateY(0);
}

.password-error {
  color: #e53e3e;
  font-size: 14px;
  margin-top: 8px;
}

.protected-content {
  position: relative;
}

@media (max-width: 1024px) {
  .hamburger {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 89px;
    right: 0;
    width: 320px;
    max-width: calc(100vw - 48px);
    background-color: #6b7280;
    border-radius: 16px;
    margin: 8px 24px;
    flex-direction: column;
    padding: 16px;
    gap: 8px;
    display: none;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  }

  .nav.active {
    display: flex;
  }

  .nav-link {
    width: 100%;
    text-align: center;
    padding: 12px 20px;
    color: #ffffff;
    font-size: 16px;
  }

  .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: #ffffff;
  }

  .nav-link.active {
    background-color: rgba(255, 255, 255, 0.2);
    color: #ffffff;
  }
}

@media (max-width: 768px) {
  .header-content {
    gap: 0;
  }

  .hero-title {
    font-size: 36px;
  }

  .hero-subtitle {
    font-size: 18px;
  }

  .case-study-content {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .text-section-split {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .case-study-title {
    font-size: 32px;
  }

  .password-input-group {
    flex-direction: column;
  }

  .password-button {
    width: 100%;
  }
}