:root {
  --color-primary: #1a365d;
  --color-secondary: #b8860b;
  --color-accent: #2c7a7b;
  --color-text: #1a202c;
  --color-text-light: #4a5568;
  --color-bg: #f7f8fa;
  --color-white: #ffffff;
  --color-border: #e2e8f0;
  --color-warning: #c53030;
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --max-width: 1140px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;
  --radius: 4px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

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

body {
  font-family: var(--font-main);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text);
  background: var(--color-bg);
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--spacing-md); }

.site-header {
  background: var(--color-white);
  border-bottom: 2px solid var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-weight: 700;
  color: var(--color-primary);
  font-size: 0.95rem;
}

.logo-link:hover { text-decoration: none; }
.logo-link img { height: 36px; width: 36px; }

.nav-menu { display: flex; gap: var(--spacing-md); list-style: none; }
.nav-menu a { color: var(--color-text); font-size: 0.9rem; font-weight: 500; }

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  padding: 0.4rem 0.7rem;
  cursor: pointer;
  border-radius: var(--radius);
  font-size: 1.1rem;
}

.hero {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-xl) var(--spacing-md);
}

.hero-inner { max-width: 680px; }
.hero h1 { font-size: 2rem; line-height: 1.25; margin-bottom: var(--spacing-sm); font-weight: 700; }
.hero .subtitle { font-size: 1.05rem; line-height: 1.7; opacity: 0.92; margin-bottom: var(--spacing-md); }

.btn-primary {
  display: inline-block;
  background: var(--color-secondary);
  color: var(--color-white);
  padding: 0.7rem 1.6rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
}

.btn-primary:hover { background: #9a7209; text-decoration: none; }

.hero-entity {
  margin-top: var(--spacing-md);
  font-size: 0.85rem;
  opacity: 0.75;
}

.hero-entity a { color: var(--color-white); text-decoration: underline; }

section { padding: var(--spacing-xl) var(--spacing-md); }
section:nth-child(even) { background: var(--color-white); }

.section-narrow { max-width: 680px; margin: 0 auto; }
.section-medium { max-width: 780px; margin: 0 auto; }
.section-wide { max-width: 880px; margin: 0 auto; }

h2 { font-size: 1.6rem; color: var(--color-primary); margin-bottom: var(--spacing-md); line-height: 1.3; }
h3 { font-size: 1.2rem; color: var(--color-primary); margin-bottom: var(--spacing-sm); margin-top: var(--spacing-md); }
p { margin-bottom: var(--spacing-sm); }

blockquote {
  background: #eef2f7;
  border-left: 4px solid var(--color-secondary);
  padding: var(--spacing-md);
  margin: var(--spacing-md) 0;
  font-size: 1.02rem;
}

blockquote p:last-child { margin-bottom: 0; }

.dont-list {
  background: #fef5f5;
  border: 1px solid #fed7d7;
  padding: var(--spacing-md);
  margin: var(--spacing-md) 0;
  border-radius: var(--radius);
}

.dont-list h4 { color: var(--color-warning); margin-bottom: var(--spacing-xs); font-size: 1rem; }
.dont-list ul { padding-left: 1.5rem; }
.dont-list li { margin-bottom: 0.3rem; }

.service-block {
  border-top: 2px solid var(--color-primary);
  padding-top: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.service-block h3 { font-size: 1.3rem; }

.service-meta {
  background: #f0f4f8;
  padding: var(--spacing-sm);
  border-radius: var(--radius);
  margin: var(--spacing-sm) 0;
  font-size: 0.92rem;
}

.articles-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--spacing-md);
}

.article-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--spacing-md);
}

.article-card.featured { border-left: 4px solid var(--color-secondary); }
.article-card h3 { font-size: 1.1rem; margin-top: 0; }
.article-card .card-meta { font-size: 0.82rem; color: var(--color-text-light); margin-top: var(--spacing-sm); }

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
}

.faq-item h3 { font-size: 1.05rem; margin-top: 0; color: var(--color-text); }
.faq-item p { color: var(--color-text-light); margin-bottom: 0; }

.article-page {
  max-width: 780px;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
}

.article-meta {
  font-size: 0.88rem;
  color: var(--color-text-light);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.article-meta span { display: inline-block; margin-right: var(--spacing-sm); }

.article-summary {
  background: #f0f4f8;
  padding: var(--spacing-md);
  border-radius: var(--radius);
  margin-bottom: var(--spacing-lg);
  font-size: 1.02rem;
}

.article-body h2 { margin-top: var(--spacing-lg); }
.article-body h3 { margin-top: var(--spacing-md); }

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-md) 0;
  font-size: 0.92rem;
}

.article-body th, .article-body td {
  border: 1px solid var(--color-border);
  padding: 0.6rem 0.8rem;
  text-align: left;
}

.article-body th { background: var(--color-primary); color: var(--color-white); }
.article-body ul, .article-body ol { padding-left: 1.5rem; margin-bottom: var(--spacing-sm); }

.article-body blockquote {
  background: #f7fafc;
  border-left: 4px solid var(--color-accent);
}

.risk-notice {
  background: #fffaf0;
  border: 1px solid #fbd38d;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius);
  font-size: 0.88rem;
  margin-bottom: var(--spacing-md);
  color: #744210;
}

.author-box {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: var(--spacing-md);
  margin: var(--spacing-lg) 0;
  border-radius: var(--radius);
}

.author-box h4 { margin-bottom: var(--spacing-xs); }

.references, .further-reading {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.references ol, .further-reading ul { padding-left: 1.5rem; }
.references li, .further-reading li { margin-bottom: 0.4rem; font-size: 0.9rem; }

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--spacing-lg);
}

.form-group { margin-bottom: var(--spacing-sm); }
.form-group label { display: block; font-weight: 600; margin-bottom: 0.3rem; font-size: 0.92rem; }

.form-group input, .form-group textarea {
  width: 100%;
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-main);
  font-size: 0.95rem;
}

.form-group textarea { min-height: 140px; resize: vertical; }

.legal-page {
  max-width: 780px;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
}

.legal-page h2 { font-size: 1.3rem; margin-top: var(--spacing-lg); }
.legal-page p, .legal-page li { font-size: 0.95rem; }

.site-footer {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-lg) var(--spacing-md);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--spacing-md);
}

.footer-col h4 { margin-bottom: var(--spacing-sm); font-size: 0.95rem; }
.footer-col a { color: rgba(255, 255, 255, 0.82); font-size: 0.88rem; display: block; margin-bottom: 0.35rem; }
.footer-col a:hover { color: var(--color-white); }
.footer-col p { font-size: 0.88rem; opacity: 0.82; }

.footer-bottom {
  max-width: var(--max-width);
  margin: var(--spacing-md) auto 0;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 0.82rem;
  opacity: 0.7;
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-md);
  z-index: 200;
  display: none;
}

.cookie-banner.show { display: block; }

.cookie-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.cookie-inner p { font-size: 0.88rem; margin: 0; flex: 1; }

.cookie-inner a { color: var(--color-secondary); text-decoration: underline; }

.cookie-btn {
  background: var(--color-secondary);
  color: var(--color-white);
  border: none;
  padding: 0.45rem 1.2rem;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 600;
}

.cookie-btn-reject {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.methodology-block {
  background: #f0f4f8;
  padding: var(--spacing-md);
  border-radius: var(--radius);
  border-left: 4px solid var(--color-accent);
  margin: var(--spacing-md) 0;
}

.toc {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius);
  margin-bottom: var(--spacing-md);
}

.toc h4 { font-size: 0.9rem; margin-bottom: 0.4rem; }
.toc ul { list-style: none; padding-left: 0; }
.toc li { font-size: 0.88rem; margin-bottom: 0.2rem; }

.hero-image {
  width: 100%;
  max-width: 880px;
  height: auto;
  border-radius: var(--radius);
  margin-top: var(--spacing-md);
  object-fit: cover;
}

.article-hero-image {
  width: 100%;
  max-width: 800px;
  height: auto;
  border-radius: var(--radius);
  margin-bottom: var(--spacing-md);
  object-fit: cover;
}

@media (max-width: 768px) {
  .menu-toggle { display: block; }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 2px solid var(--color-primary);
    box-shadow: var(--shadow);
  }

  .nav-menu.open { display: flex; }
  .hero h1 { font-size: 1.6rem; }
  .articles-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .cookie-inner { flex-direction: column; text-align: center; }
}