:root {
  color-scheme: light dark;

  --text-primary: #222;
  --text-heading: #1a1a1a;
  --bg-page: #f0f0f0;
  --bg-content: #ffffff;
  --bg-header: #f4f4f4;

  --bg-nav: #f6f6f2;
  --bg-nav-sub: #e8e8e2;
  --border-nav: #dcdcdc;

  --hover-nav: #e6e6e0;
  --active-nav: #d62828;
  --btn-dark: #2a2a2a;
  --btn-secondary-text: #003344;

  --link-muted: #555;
  --text-muted: #666;
  --shadow-subtle: rgba(0, 0, 0, 0.06);
  --shadow-header: rgba(0, 0, 0, 0.05);

  --brand-blue: #00AEEF;
  --btn-secondary-bg: rgba(0, 204, 255, 0.21);
  --btn-secondary-hover: #00b6e6;

  --font-family: Arial, Helvetica, sans-serif;
  --font-size-body: 16px;

  --font-size-h1: 28px;

  --font-size-h2: 20px;
  --font-size-nav: 15px;
  --font-size-btn: 15px;
  --font-size-btn-secondary: 0.9em;
  --font-size-example: 0.95em;
  --font-size-mobile-badge: 13px;
  --font-size-header: 30px;
  --font-weight-normal: 500;
  --font-weight-bold: 600;
  --font-weight-badge: 600;
  --line-height-body: 1.6;
  --line-height-nav: 1.2;
  --line-height-header: 1.2;
  --letter-spacing-h1: -0.2px;
  --letter-spacing-header: -0.4px;
  --letter-spacing-nav: 0.2px;

  --max-width-content: 950px;
  --padding-content-v: 40px;
  --padding-content-h: 20px;
  --padding-nav: 14px 16px;
  --padding-btn: 11px 20px;
  --padding-btn-secondary: 10px 18px;
  --margin-h1-bottom: 18px;
  --margin-h2-top: 22px;
  --margin-h2-bottom: 6px;
  --margin-actions-top: 22px;
  --margin-situations-top: 6px;
  --margin-situations-bottom: 28px;
  --margin-btn-right: 12px;
  --height-header: 105px;
  --height-header-mobile: 90px;

  --transition-btn: all 0.15s ease;
  --transition-btn-secondary: background-color 0.2s ease, transform 0.05s ease;
  --transition-header-bg: background-color 0.3s ease;

  --border-btn: 1px solid #2a2a2a;
  --border-radius-btn: 3px;
  --border-radius-btn-secondary: 4px;
  --border-radius-badge: 3px;
  --border-nav-bottom: 1px solid #dcdcdc;
}

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

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-page);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  line-height: var(--line-height-body);
}

h1 {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-h1);
  margin-bottom: var(--margin-h1-bottom);
  color: var(--text-heading);
}

h2 {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-bold);
  margin-top: var(--margin-h2-top);
  margin-bottom: var(--margin-h2-bottom);
  color: var(--text-heading);
}

p {
  font-size: var(--font-size-body);
  line-height: var(--line-height-body);
}

.btn {
  font-size: var(--font-size-btn);
  font-weight: var(--font-weight-normal);
  padding: var(--padding-btn);
  margin-right: var(--margin-btn-right);
  border: var(--border-btn);
  border-radius: var(--border-radius-btn);
  transition: var(--transition-btn);
  text-decoration: none;
  display: inline-block;
  cursor: pointer;
}

.btn.primary {
  background-color: var(--btn-dark);
  color: #fff;
}

@media (hover: hover) and (pointer: fine) {
  .btn.primary:hover {
    background-color: #000;
  }
}

.btn.secondary {
  background-color: var(--btn-secondary-bg);
  color: var(--btn-secondary-text);
  font-size: var(--font-size-btn-secondary);
  padding: var(--padding-btn-secondary);
  border: 1px solid transparent;
  
  border-radius: var(--border-radius-btn-secondary);
  transition: var(--transition-btn-secondary);
}

@media (hover: hover) and (pointer: fine) {
  .btn.secondary:hover {
    background-color: var(--btn-secondary-hover);
    transform: scale(1.02);
  }
}

.centered-content {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 0 var(--padding-content-h);
  background-color: var(--bg-content);
  box-shadow: var(--shadow-subtle);
}

.page-breadcrumb {
  font-size: 0.85em;
  color: var(--link-muted);
  text-decoration: underline;
  margin-top: -8px;
  margin-bottom: 20px;
}

.page-breadcrumb a:hover {
  color: var(--text-primary);
}

.actions {
  margin-top: var(--margin-actions-top);
}

.page-footer {
  text-align: center;
  padding: 20px;
  font-size: 0.9em;
  color: var(--text-primary);
}

.page-footer p {
  margin: 5px 0;
  color: #888888;
  font-size: 0.87em;
}

.key-insight {
  font-size: 1.05em;
  font-weight: 700;
  color: var(--text-heading);
  padding: 16px 20px;
  background-color: var(--bg-header);
  border-left: 3px solid var(--btn-dark);
  border-radius: 4px;
  margin: 20px 0;
}

h2.section-break {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

hr.section-break {
  margin-top: 40px;
  margin-bottom: 24px;
  border: none;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.header-wrapper {
  background-color: var(--bg-header);
  box-shadow: var(--shadow-header);
  transition: var(--transition-header-bg);
  position: relative;
  
  z-index: 10;
  
}

.header-wrapper .mobile-page-indicator {
  display: none;
}

.header-container {
  max-width: var(--max-width-content);
  margin: 0 auto;
  display: flex;
  align-items: center;

  padding: 8px var(--padding-content-h);
}

.logo-box {
  display: flex;
  align-items: center;
  margin-right: 20px;
}

.logo-box img {
  height: 70px;
  width: auto;
  display: block;
  border-radius: 10px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.20);
}

@media (prefers-color-scheme: dark) {
  .logo-box img {
    box-shadow: 0 4px 14px rgba(255, 255, 255, 0.15);
  }
}

.header-text {
  font-size: var(--font-size-header);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-header);
  letter-spacing: var(--letter-spacing-header);
  color: var(--text-heading);
}

.btn.primary2 {
  background-color: transparent;
  color: var(--btn-dark);
  border: 2px solid var(--btn-dark);
  font-weight: var(--font-weight-bold);
}

.btn.primary2:hover {
  background-color: var(--btn-dark);
  color: #fff;
}

@media (max-width: 768px) {

  .header-container {
    justify-content: center;

    padding-top: 6px;
    padding-bottom: 0;
    padding-left: var(--padding-content-h);
    padding-right: var(--padding-content-h);
  }

  .header-text {
    display: none;
  }

  .header-wrapper {
    position: relative;
  }

  .logo-box {
    margin-right: 0;
  }

  .logo-box img {
    height: 55px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.18);
  }

  @media (max-width: 768px) and (prefers-color-scheme: dark) {
    .logo-box img {
      box-shadow: 0 3px 10px rgba(255, 255, 255, 0.12);
    }
  }

  .header-wrapper .mobile-page-indicator {
    display: block;
    position: absolute;
    left: 45px;
    top: 100%;
    transform: translateY(8px);
    background-color: #d62828;
    color: white;
    font-size: 13px;
    font-weight: bold;
    padding: 4px 10px;
    border-radius: 4px;
    z-index: 100;
  }

  .actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .actions .btn {
    display: block;
    width: 100%;
    text-align: center;
  }
}

@media (prefers-color-scheme: dark) {

  :root {
    --text-primary: #e6e6e6;
    --text-heading: #ffffff;
    --bg-page: #121212;

    --bg-content: #1b1b1b;
    --bg-header: #262626;

    --bg-nav: #1b1b1b;
    --bg-nav-sub: #262626;
    --border-nav: #333;
    --btn-dark: #2a2a2a;
    --hover-nav: #333333;

    --btn-secondary-text: #eaf6ff;
    --text-muted: #999;
    --link-muted: #888;

    --btn-secondary-bg: rgba(0, 174, 239, 0.25);

    --border-btn: 1px solid #555;
  }

  .btn.primary {
    background-color: #d62828;
    
  }

  h2::after {
    border-color: #444;
    
  }

  .key-insight {
    border-left-color: var(--text-primary);
  }

  h2.section-break {
    border-top-color: rgba(255, 255, 255, 0.08);
  }

  hr.section-break {
    border-top-color: rgba(255, 255, 255, 0.08);
  }

  .btn.primary2 {
    color: var(--text-primary);
    border-color: var(--text-primary);
  }

  .btn.primary2:hover {
    background-color: var(--text-primary);
    color: #111;
  }

}