:root {
  --color-primary: #1B4332;
  --color-primary-light: #2D6A4F;
  --color-accent: #FF6B35;
  --color-accent-dark: #E55A2B;
  --color-bg: #F5E6CA;
  --color-bg-dark: #E6D3B3;
  --color-text: #2D2D2D;
  --color-text-secondary: #6C757D;
  --color-white: #FFFFFF;
  --color-black: #1A1A1A;
  --color-data-green: #40916C;
  --color-data-orange: #FF8C42;
  --color-data-blue: #4895EF;
  --font-heading: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.14);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --header-height: 72px;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover, a:focus-visible { color: var(--color-accent); }
ul, ol { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 2px; border-radius: var(--radius-sm); }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.visually-hidden:focus {
  position: fixed; top: 16px; left: 16px; width: auto; height: auto;
  padding: 12px 24px; background: var(--color-white); color: var(--color-primary);
  font-weight: 700; clip: auto; border-radius: var(--radius-sm); z-index: 10000;
  box-shadow: var(--shadow-lg);
}

.skip-link {
  position: absolute; top: -100%; left: 16px; z-index: 10000;
  padding: 12px 24px; background: var(--color-primary); color: var(--color-white);
  font-weight: 700; border-radius: var(--radius-sm); transition: top 0.2s;
}
.skip-link:focus { top: 16px; }

/* Progress Bar */
.progress-bar {
  position: fixed; top: 0; left: 0; width: 0; height: 4px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary-light));
  z-index: 9999; transition: width 0.1s linear; pointer-events: none;
}
@media (prefers-reduced-motion: reduce) { .progress-bar { transition: none; } }

/* Header */
.site-header {
  position: fixed; top: 0; left: 0; width: 100%; height: var(--header-height);
  z-index: 9000; background: transparent; transition: background var(--transition), box-shadow var(--transition);
}
.site-header[data-scrolled] {
  background: var(--color-primary); box-shadow: 0 2px 20px rgba(0,0,0,0.2);
}

.header-inner {
  max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  height: 100%; position: relative;
}

.logo-text {
  font-family: var(--font-heading); font-size: 1.5rem; font-weight: 800;
  color: var(--color-white); letter-spacing: 0.02em; text-transform: uppercase;
  transition: color var(--transition); flex-shrink: 0;
}
.site-header[data-scrolled] .logo-text { color: var(--color-white); }
.logo-text:hover { color: var(--color-accent); }

/* Navigation Toggle */
.nav-toggle {
  display: none; flex-direction: column; gap: 5px; padding: 8px;
  z-index: 9100; cursor: pointer; background: transparent;
}
.nav-toggle-icon {
  display: block; width: 28px; height: 3px; background: var(--color-white);
  border-radius: 3px; transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }

/* Main Navigation */
.main-nav { display: flex; align-items: center; }
.nav-list { display: flex; gap: 8px; align-items: center; }
.nav-link {
  display: block; padding: 8px 18px; font-family: var(--font-heading);
  font-size: 0.9rem; font-weight: 600; color: rgba(255,255,255,0.85);
  border-radius: var(--radius-full); transition: background var(--transition), color var(--transition);
  letter-spacing: 0.01em; position: relative;
}
.nav-link:hover { background: rgba(255,255,255,0.12); color: var(--color-white); }
.nav-link:focus-visible { outline-color: var(--color-accent); }
.nav-link[aria-current="page"] {
  background: var(--color-accent); color: var(--color-white);
  box-shadow: 0 2px 10px rgba(255,107,53,0.3);
}
.site-header[data-scrolled] .nav-link[aria-current="page"] {
  background: var(--color-accent); color: var(--color-white);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed; top: 0; right: -100%; width: 300px; height: 100vh;
    background: var(--color-primary); flex-direction: column; align-items: stretch;
    padding: 100px 32px 40px; transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: -8px 0 40px rgba(0,0,0,0.3); z-index: 9050;
  }
  .main-nav[data-open] { right: 0; }
  .nav-list { flex-direction: column; gap: 4px; }
  .nav-link {
    font-size: 1.1rem; padding: 12px 20px; color: rgba(255,255,255,0.9);
    border-radius: var(--radius-md); text-align: left;
  }
  .nav-link[aria-current="page"] { background: var(--color-accent); color: var(--color-white); }
}

/* Overlay for mobile nav */
@media (max-width: 768px) {
  body.nav-open::after {
    content: ''; position: fixed; inset: 0; background: rgba(0,0,0,0.4);
    z-index: 9040; animation: fadeIn 0.3s ease;
  }
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* Footer */
.site-footer {
  background: var(--color-primary); color: rgba(255,255,255,0.85);
  padding: 60px 24px 32px; margin-top: 80px;
}
.footer-inner { max-width: var(--max-width); margin: 0 auto; }
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1.5fr; gap: 48px;
  padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer-logo {
  display: inline-block; font-family: var(--font-heading);
  font-size: 1.6rem; font-weight: 800; color: var(--color-white);
  margin-bottom: 16px; letter-spacing: 0.02em;
}
.footer-trust { font-size: 0.95rem; line-height: 1.7; color: rgba(255,255,255,0.7); max-width: 360px; }
.footer-heading {
  display: block; font-family: var(--font-heading); font-size: 1rem;
  font-weight: 700; color: var(--color-white); margin-bottom: 16px;
  letter-spacing: 0.03em; text-transform: uppercase;
}
.footer-link-list { display: flex; flex-direction: column; gap: 10px; }
.footer-link-list a, .footer-contact-list a {
  color: rgba(255,255,255,0.7); font-size: 0.95rem; transition: color var(--transition);
  display: inline-block; padding: 2px 0;
}
.footer-link-list a:hover, .footer-contact-list a:hover { color: var(--color-accent); }
.footer-contact-list { display: flex; flex-direction: column; gap: 10px; }
.footer-contact-list li { font-size: 0.95rem; color: rgba(255,255,255,0.7); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 24px; font-size: 0.85rem; color: rgba(255,255,255,0.5);
}

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-trust { max-width: 100%; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .site-footer { padding: 40px 20px 24px; }
}

/* Container */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 32px; font-family: var(--font-heading); font-size: 0.95rem;
  font-weight: 700; border-radius: var(--radius-full); transition: all var(--transition);
  letter-spacing: 0.02em; line-height: 1.2;
}
.btn-primary { background: var(--color-primary); color: var(--color-white); }
.btn-primary:hover { background: var(--color-primary-light); color: var(--color-white); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-accent { background: var(--color-accent); color: var(--color-white); }
.btn-accent:hover { background: var(--color-accent-dark); color: var(--color-white); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn:focus-visible { outline-color: var(--color-accent); outline-offset: 3px; }

/* Cards */
.card {
  background: var(--color-white); border-radius: var(--radius-md);
  padding: 28px; box-shadow: var(--shadow-sm); transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

/* Capsule Tags */
.capsule-tag {
  display: inline-flex; align-items: center; padding: 4px 16px;
  border-radius: var(--radius-full); font-size: 0.8rem; font-weight: 600;
  letter-spacing: 0.02em; line-height: 1.6;
}
.capsule-tag.data-green { background: rgba(64, 145, 108, 0.15); color: var(--color-data-green); }
.capsule-tag.data-orange { background: rgba(255, 140, 66, 0.15); color: var(--color-data-orange); }
.capsule-tag.data-blue { background: rgba(72, 149, 239, 0.15); color: var(--color-data-blue); }

/* Data Panel */
.data-panel {
  background: var(--color-primary); border-radius: var(--radius-lg);
  padding: 32px; color: var(--color-white); box-shadow: var(--shadow-md);
}
.data-panel.light { background: var(--color-bg); color: var(--color-text); }
.data-panel .stat-value {
  font-family: var(--font-heading); font-size: 2.8rem; font-weight: 800;
  line-height: 1.1; letter-spacing: -0.02em;
}
.data-panel.light .stat-value { color: var(--color-primary); }

/* Section Title */
.section-title {
  font-family: var(--font-heading); font-size: 2rem; font-weight: 700;
  color: var(--color-text); margin-bottom: 24px; position: relative;
  padding-left: 20px;
}
.section-title::before {
  content: ''; position: absolute; left: 0; top: 0.15em; bottom: 0.15em;
  width: 5px; background: var(--color-accent); border-radius: var(--radius-full);
}

/* Responsive Typography */
@media (max-width: 768px) {
  .section-title { font-size: 1.6rem; padding-left: 16px; }
  .data-panel .stat-value { font-size: 2.2rem; }
}

/* Grid system base */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 32px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; gap: 20px; }
}
@media (min-width: 769px) and (max-width: 1024px) {
  .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; }
}

/* Spacing utilities */
.mt-8 { margin-top: 80px; }
.mt-6 { margin-top: 60px; }
.mt-4 { margin-top: 40px; }
.mt-3 { margin-top: 32px; }
.mt-2 { margin-top: 20px; }
.mb-8 { margin-bottom: 80px; }
.mb-6 { margin-bottom: 60px; }
.mb-4 { margin-bottom: 40px; }
.mb-3 { margin-bottom: 32px; }
.mb-2 { margin-bottom: 20px; }
.p-4 { padding: 40px; }
.p-3 { padding: 32px; }
.p-2 { padding: 20px; }

/* Accessibility & Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
  .card:hover { transform: none; }
  .btn:hover { transform: none; }
}

/* Focus visible polyfill */
:focus:not(:focus-visible) { outline: none; }

/* Header scroll transition - ensure content below is visible */
.site-header + * { margin-top: var(--header-height); }

/* Mobile nav body state */
@media (max-width: 768px) {
  body.nav-open { overflow: hidden; }
}