/* ===== Reset ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { min-height: 100vh; line-height: 1.5; -webkit-font-smoothing: antialiased; }
img, svg { display: block; max-width: 100%; }
ul, ol { list-style: none; }
a { text-decoration: none; color: inherit; }
button { font: inherit; color: inherit; border: none; background: none; cursor: pointer; }
:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 2px; }

/* ===== CSS Variables ===== */
:root {
  --color-primary: #B85C41;
  --color-secondary: #5B7B6F;
  --color-accent: #F4A261;
  --color-bg-dark: #2B2D42;
  --color-bg-light: #F5F0E1;
  --color-text-primary: #1A1A2E;
  --color-text-secondary: #4A4E69;
  --color-border: #8D6E63;
  --color-hover: #E76F51;
  --color-white: #FFFFFF;
  --color-black: #0A0A0A;

  --font-heading: "Futura", "Trebuchet MS", "Arial", sans-serif;
  --font-body: "Merriweather", Georgia, "Times New Roman", serif;
  --font-size-h1: 3.5rem;
  --font-size-h2: 2.5rem;
  --font-size-h3: 1.8rem;
  --font-size-body: 1rem;
  --font-size-small: 0.875rem;
  --line-height-body: 1.5;

  --border-width-thick: 3px;
  --border-width-medium: 2px;
  --shadow-card: 0 8px 24px rgba(0,0,0,0.18);
  --shadow-header: 0 2px 16px rgba(0,0,0,0.30);
  --radius-default: 4px;

  --container-max: 1200px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 3rem;
  --space-xl: 5rem;

  --transition-fast: 0.2s ease;
  --transition-normal: 0.35s ease;
}

/* ===== Base Typography ===== */
body {
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  line-height: var(--line-height-body);
  color: var(--color-text-primary);
  background-color: var(--color-bg-light);
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-text-primary);
}
h1 { font-size: var(--font-size-h1); }
h2 { font-size: var(--font-size-h2); }
h3 { font-size: var(--font-size-h3); }
p { margin-bottom: 1em; }
a { color: var(--color-primary); transition: color var(--transition-fast); }
a:hover { color: var(--color-hover); }

/* ===== Container ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}
@media (max-width: 768px) {
  .container { padding-left: var(--space-sm); padding-right: var(--space-sm); }
}

/* ===== Skip Link ===== */
.skip-link {
  position: absolute;
  top: -1000px;
  left: var(--space-sm);
  z-index: 10000;
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--font-size-small);
  border-radius: var(--radius-default);
  transition: top var(--transition-fast);
}
.skip-link:focus { top: var(--space-xs); }

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

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 9000;
  background: rgba(43, 45, 66, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: var(--border-width-medium) solid var(--color-border);
  box-shadow: var(--shadow-header);
  font-family: var(--font-heading);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding-top: var(--space-xs);
  padding-bottom: var(--space-xs);
}
.site-header__brand {
  display: flex;
  align-items: baseline;
  gap: 0;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 0.02em;
}
.site-header__brand:hover { color: var(--color-accent); }
.site-header__logo { color: var(--color-accent); }
.site-header__logo-accent { color: var(--color-white); font-weight: 700; }

/* ===== Header Toggle (mobile) ===== */
.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: var(--border-width-medium) solid var(--color-border);
  border-radius: var(--radius-default);
  padding: 6px;
  transition: border-color var(--transition-fast);
}
.site-header__toggle:hover { border-color: var(--color-accent); }
.site-header__toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-white);
  border-radius: 1px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}
.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(2) { opacity: 0; }
.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Navigation ===== */
.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}
.site-header__link {
  display: block;
  padding: 0.5rem 1rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-white);
  border: var(--border-width-medium) solid transparent;
  border-radius: var(--radius-default);
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}
.site-header__link:hover {
  background: rgba(244, 162, 97, 0.15);
  color: var(--color-accent);
  border-color: var(--color-accent);
}
.site-header__link[aria-current="page"] {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* ===== Mobile Nav ===== */
@media (max-width: 868px) {
  .site-header__toggle { display: flex; }
  .site-header__nav {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(43, 45, 66, 0.97);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: var(--border-width-medium) solid var(--color-border);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
  }
  .site-header__nav[data-open] { max-height: 500px; }
  .site-header__nav-list {
    flex-direction: column;
    padding: var(--space-sm) var(--space-md);
    gap: var(--space-xs);
  }
  .site-header__link {
    width: 100%;
    text-align: center;
    padding: 0.75rem 1rem;
    font-size: 1rem;
  }
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-bg-dark);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: var(--font-size-small);
  border-top: var(--border-width-thick) solid var(--color-primary);
  padding-top: var(--space-lg);
  padding-bottom: var(--space-md);
}
.site-footer__inner { }
.site-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}
.site-footer__col { }
.site-footer__brand {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}
.site-footer__brand:hover { color: var(--color-white); }
.site-footer__logo { color: var(--color-accent); }
.site-footer__desc { color: rgba(255,255,255,0.7); line-height: 1.6; margin-bottom: 0; }
.site-footer__heading {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
  border-bottom: 2px solid rgba(244, 162, 97, 0.25);
  padding-bottom: var(--space-xs);
}
.site-footer__links li,
.site-footer__contact li,
.site-footer__legal li {
  margin-bottom: var(--space-xs);
}
.site-footer__links a,
.site-footer__contact a,
.site-footer__legal a {
  color: rgba(255,255,255,0.75);
  transition: color var(--transition-fast);
}
.site-footer__links a:hover,
.site-footer__contact a:hover,
.site-footer__legal a:hover { color: var(--color-accent); }
.site-footer__contact li:last-child { color: rgba(255,255,255,0.6); }
.site-footer__note {
  margin-top: var(--space-sm);
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
}
.site-footer__note a { color: var(--color-accent); }
.site-footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: var(--space-md);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
}
.site-footer__icp { color: rgba(255,255,255,0.5); font-size: 0.8rem; margin-bottom: 0; }
.site-footer__copyright { color: rgba(255,255,255,0.5); font-size: 0.8rem; margin-bottom: 0; }

@media (max-width: 868px) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
  }
  .site-footer__col--brand { grid-column: 1 / -1; }
  .site-footer__bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .site-footer__grid { grid-template-columns: 1fr; }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--font-size-small);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.7rem 1.8rem;
  border: var(--border-width-medium) solid transparent;
  border-radius: var(--radius-default);
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  cursor: pointer;
}
.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}
.btn--primary:hover {
  background: var(--color-hover);
  border-color: var(--color-hover);
  color: var(--color-white);
  box-shadow: 0 4px 16px rgba(184, 92, 65, 0.4);
}
.btn--secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--secondary:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* ===== Cards ===== */
.card {
  background: var(--color-white);
  border: var(--border-width-thick) solid var(--color-border);
  border-radius: var(--radius-default);
  box-shadow: var(--shadow-card);
  padding: var(--space-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.card:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(0,0,0,0.22); }
.card__title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}
.card__content { color: var(--color-text-secondary); font-size: var(--font-size-small); line-height: 1.6; }

/* ===== Tags ===== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  background: rgba(244, 162, 97, 0.12);
  border: var(--border-width-medium) solid var(--color-accent);
  border-radius: var(--radius-default);
  padding: 0.3rem 0.8rem;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-accent);
}
.tag__label { color: var(--color-text-secondary); }

/* ===== Data Number ===== */
.data-number {
  font-family: var(--font-heading);
  font-size: 3.2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}
.data-number--accent { color: var(--color-accent); }

/* ===== Breadcrumb ===== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-heading);
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  padding: var(--space-sm) 0;
}
.breadcrumb a { color: var(--color-text-secondary); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb span { color: var(--color-text-secondary); }
.breadcrumb li + li::before {
  content: "/";
  margin-right: var(--space-xs);
  color: var(--color-border);
}

/* ===== Section ===== */
.section {
  padding: var(--space-xl) 0;
}
.section--dark {
  background: var(--color-bg-dark);
  color: var(--color-white);
}
.section--light {
  background: var(--color-bg-light);
}

/* ===== Hero (base) ===== */
.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--color-bg-dark);
}

/* ===== Heading Skew ===== */
.heading--skew {
  display: inline-block;
  transform: skew(-2deg);
  transform-origin: left center;
}

/* ===== Utility ===== */
.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.text-primary { color: var(--color-primary); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

/* ===== Responsive Typography ===== */
@media (max-width: 868px) {
  :root {
    --font-size-h1: 2.6rem;
    --font-size-h2: 2rem;
    --font-size-h3: 1.5rem;
  }
}
@media (max-width: 520px) {
  :root {
    --font-size-h1: 2rem;
    --font-size-h2: 1.6rem;
    --font-size-h3: 1.2rem;
  }
  .data-number { font-size: 2.4rem; }
}

/* ===== Accessibility ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .card:hover { transform: none; }
}
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg-light: #1E1E2A;
    --color-text-primary: #EDEDF0;
    --color-text-secondary: #A0A0B0;
    --color-white: #2B2D42;
  }
  .card { background: #2B2D42; }
  .card__title { color: #EDEDF0; }
  .card__content { color: #A0A0B0; }
}