:root {
  --color-primary-dark: #0A1F3F;
  --color-primary-gold: #D4A843;
  --color-accent-red: #E63946;
  --color-accent-green: #2A9D8F;
  --color-bg-warm: #F5EFE0;
  --color-bg-ink: #1D1D1D;
  --color-text-light: #FFFFFF;
  --color-text-dark: #0A1F3F;
  --color-data-highlight: #F4A261;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
  --font-body: 'Merriweather', Georgia, 'Times New Roman', serif;
  --font-scale-h1: 4rem;
  --font-scale-h2: 2.5rem;
  --font-scale-h3: 1.75rem;
  --font-scale-body: 1rem;
  --header-width: 260px;
  --header-width-mobile: 280px;
  --transition-speed: 0.3s;
  --border-radius: 6px;
  --shadow-card: 0 2px 12px rgba(10, 31, 63, 0.08);
  --max-width: 1200px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  html {
    scroll-behavior: auto;
  }
}

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

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

a {
  color: var(--color-primary-dark);
  text-decoration: none;
  transition: color var(--transition-speed) ease;
}

a:hover {
  color: var(--color-primary-gold);
}

a:focus-visible {
  outline: 2px solid var(--color-primary-gold);
  outline-offset: 2px;
  border-radius: 2px;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: var(--font-heading);
  border: none;
  background: none;
}

button:focus-visible {
  outline: 2px solid var(--color-primary-gold);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  z-index: 10000;
  padding: 0.75rem 1.5rem;
  background: var(--color-primary-dark);
  color: var(--color-text-light);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0;
  outline: 2px solid var(--color-primary-gold);
  outline-offset: 2px;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--header-width);
  height: 100vh;
  background: var(--color-primary-dark);
  color: var(--color-text-light);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  border-right: 2px solid var(--color-primary-gold);
  overflow: hidden;
}

.header__inner {
  padding: 1.5rem 1.25rem 1rem;
  border-bottom: 1px solid rgba(212, 168, 67, 0.25);
}

.header__brand {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.header__logo {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-primary-gold);
  letter-spacing: 0.04em;
  text-decoration: none;
  line-height: 1.2;
  transition: opacity 0.2s;
}

.header__logo:hover {
  color: var(--color-primary-gold);
  opacity: 0.85;
}

.header__tagline {
  font-family: var(--font-body);
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.header__nav-toggle {
  display: none;
  position: absolute;
  top: 1.15rem;
  right: 1rem;
  width: 32px;
  height: 32px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  background: transparent;
  border: 1px solid rgba(212, 168, 67, 0.3);
  border-radius: 4px;
  padding: 4px;
  z-index: 1100;
}

.header__nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-primary-gold);
  border-radius: 1px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.header__nav {
  flex: 1;
  display: flex;
  flex-direction: row;
  overflow-y: auto;
  padding: 1rem 0;
  scrollbar-width: thin;
  scrollbar-color: var(--color-primary-gold) transparent;
}

.header__nav::-webkit-scrollbar {
  width: 4px;
}

.header__nav::-webkit-scrollbar-thumb {
  background: var(--color-primary-gold);
  border-radius: 2px;
}

.header__nav-list {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 0 0.25rem 0 1.25rem;
  gap: 0.15rem;
}

.header__nav-item {
  position: relative;
}

.header__nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.55rem 0.75rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  border-radius: 4px;
  transition: color 0.2s ease, background 0.2s ease;
  border-left: 3px solid transparent;
}

.header__nav-link:hover {
  color: var(--color-text-light);
  background: rgba(212, 168, 67, 0.1);
}

.header__nav-link[aria-current="page"] {
  color: var(--color-primary-gold);
  background: rgba(212, 168, 67, 0.12);
  border-left-color: var(--color-primary-gold);
}

.header__nav-num {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 0.7rem;
  color: rgba(212, 168, 67, 0.6);
  min-width: 1.8rem;
  letter-spacing: 0.05em;
}

.header__nav-link[aria-current="page"] .header__nav-num {
  color: var(--color-primary-gold);
}

.header__nav-label {
  font-size: 0.88rem;
}

.header__progress {
  width: 4px;
  min-height: 100px;
  background: rgba(212, 168, 67, 0.15);
  border-radius: 2px;
  margin: 0.5rem 0.75rem 0.5rem 0.25rem;
  position: relative;
  flex-shrink: 0;
  align-self: stretch;
}

.header__progress-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 0%;
  background: var(--color-primary-gold);
  border-radius: 2px;
  transition: height 0.1s ease-out;
}

.footer {
  background: var(--color-primary-dark);
  color: var(--color-text-light);
  padding: 3rem 1.5rem 1.5rem;
  border-top: 3px solid var(--color-primary-gold);
  margin-left: var(--header-width);
}

.footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1.5fr;
  gap: 2rem;
  align-items: start;
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.footer__logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary-gold);
  text-decoration: none;
  letter-spacing: 0.03em;
}

.footer__logo:hover {
  color: var(--color-primary-gold);
  opacity: 0.85;
}

.footer__tagline {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer__link {
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  padding: 0.2rem 0;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.footer__link:hover {
  color: var(--color-primary-gold);
  border-bottom-color: var(--color-primary-gold);
}

.footer__contact {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.footer__contact-item {
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.5;
}

.footer__contact-note {
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.4);
  font-style: italic;
  margin-top: 0.3rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 0.5rem;
}

.footer__bottom {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 0.5rem;
}

.footer__copyright {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.45);
}

.footer__icp {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.35);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

.section {
  padding: 3rem 0;
  position: relative;
}

.section__num {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 3rem;
  color: var(--color-primary-gold);
  opacity: 0.25;
  line-height: 1;
  margin-bottom: -0.5rem;
  display: block;
}

.section__title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--font-scale-h2);
  color: var(--color-primary-dark);
  line-height: 1.2;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.8rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: var(--border-radius);
  text-decoration: none;
  transition: all var(--transition-speed) ease;
  border: 2px solid transparent;
  cursor: pointer;
  line-height: 1.3;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary-gold);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--color-primary-gold);
  color: var(--color-primary-dark);
  border-color: var(--color-primary-gold);
}

.btn--primary:hover {
  background: transparent;
  color: var(--color-primary-gold);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary-gold);
  border-color: var(--color-primary-gold);
}

.btn--outline:hover {
  background: var(--color-primary-gold);
  color: var(--color-primary-dark);
}

.card {
  background: var(--color-text-light);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-card);
  padding: 1.5rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  border: 1px solid rgba(10, 31, 63, 0.06);
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(10, 31, 63, 0.12);
}

.card__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--font-scale-h3);
  color: var(--color-primary-dark);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.card__body {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-bg-ink);
  line-height: 1.6;
}

.data-highlight {
  color: var(--color-data-highlight);
  font-weight: 700;
}

.data-red {
  color: var(--color-accent-red);
  font-weight: 700;
}

.data-green {
  color: var(--color-accent-green);
  font-weight: 700;
}

.image-container {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: var(--border-radius);
  background: var(--color-bg-warm);
  aspect-ratio: 16 / 9;
}

.image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 1024px) {
  .footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
  .footer__bottom {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  :root {
    --header-width: 0px;
    --font-scale-h1: 2.5rem;
    --font-scale-h2: 1.8rem;
    --font-scale-h3: 1.35rem;
  }

  .header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: auto;
    min-height: 56px;
    flex-direction: row;
    flex-wrap: wrap;
    border-right: none;
    border-bottom: 2px solid var(--color-primary-gold);
    padding: 0;
    overflow: visible;
    z-index: 1000;
  }

  .header__inner {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.7rem 1rem;
    border-bottom: none;
  }

  .header__brand {
    flex-direction: row;
    align-items: baseline;
    gap: 0.5rem;
  }

  .header__logo {
    font-size: 1.25rem;
  }

  .header__tagline {
    font-size: 0.6rem;
  }

  .header__nav-toggle {
    display: flex;
    position: relative;
    top: auto;
    right: auto;
  }

  .header__nav {
    position: fixed;
    top: 0;
    left: -100%;
    width: var(--header-width-mobile);
    height: 100vh;
    flex-direction: column;
    background: var(--color-primary-dark);
    border-right: 2px solid var(--color-primary-gold);
    padding: 4.5rem 1rem 2rem;
    transition: left 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1050;
    overflow-y: auto;
  }

  .header__nav[data-open="true"] {
    left: 0;
  }

  .header__nav-list {
    padding: 0;
    gap: 0.1rem;
  }

  .header__nav-link {
    padding: 0.65rem 0.75rem;
    font-size: 0.95rem;
  }

  .header__progress {
    min-height: 60px;
    margin: 0.75rem 0 0 0.75rem;
    width: 4px;
    align-self: stretch;
  }

  .header[data-nav-open]::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1040;
    pointer-events: auto;
  }

  .footer {
    margin-left: 0;
    padding: 2rem 1rem 1rem;
  }

  .footer__inner {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .footer__bottom {
    flex-direction: column;
    gap: 0.3rem;
    text-align: center;
  }

  .container {
    padding: 0 1rem;
  }

  .section {
    padding: 2rem 0;
  }

  .section__num {
    font-size: 2.2rem;
  }

  .card {
    padding: 1rem;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  :root {
    --header-width: 220px;
  }

  .header__logo {
    font-size: 1.35rem;
  }

  .header__nav-link {
    font-size: 0.8rem;
    padding: 0.45rem 0.6rem;
  }

  .header__nav-num {
    font-size: 0.6rem;
    min-width: 1.5rem;
  }

  .footer {
    padding: 2rem 1rem 1rem;
  }

  .footer__inner {
    gap: 1rem;
  }
}

@media (max-width: 768px) and (prefers-reduced-motion: reduce) {
  .header__nav {
    transition: none;
  }
}