:root {
  --navy: #1f3a5f;
  --navy-dark: #162b47;
  --accent: #3eaf7c;
  --text: #2c3e50;
  --muted: #5f6b7a;
  --border: #e2e8f0;
  --bg: #f5f7fa;
  --card: #ffffff;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
a { color: var(--navy); }

/* Header */
.navbar {
  background: var(--navy);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .15);
}
.navbar-inner {
  position: relative;
  max-width: 1040px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.site-name {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: .01em;
}
.nav-links { display: flex; gap: 4px; flex-wrap: wrap; }
.nav-links a {
  color: #dbe4ef;
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 4px;
  font-size: .95rem;
  white-space: nowrap;
}
.nav-links a:hover, .nav-links a.active { color: #fff; background: var(--navy-dark); }
.menu-button {
  display: none;
  background: none;
  border: 1px solid rgba(255, 255, 255, .4);
  color: #fff;
  border-radius: 4px;
  padding: 6px 10px;
  font: inherit;
  font-size: .85rem;
  letter-spacing: .05em;
  cursor: pointer;
}

/* Case banner */
.case-banner {
  background: var(--navy-dark);
  color: #c9d6e6;
  text-align: center;
  font-size: .9rem;
  padding: 10px 20px;
}

/* Breadcrumb */
.breadcrumb {
  font-size: .875rem;
  color: var(--muted);
  margin: 0 0 16px;
}
.breadcrumb a { color: var(--muted); }

/* Content */
main {
  flex: 1;
  width: 100%;
  max-width: 820px;
  margin: 40px auto;
  padding: 0 20px;
}
.content {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 40px 44px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, .04);
}
.content h1 {
  margin: 0 0 20px;
  font-size: 1.65rem;
  line-height: 1.3;
  color: var(--navy);
}
.content h2 {
  margin: 32px 0 12px;
  font-size: 1.2rem;
  line-height: 1.35;
  color: var(--navy);
}
.content p { margin: 0 0 16px; }
.content ul { margin: 0 0 16px; padding-left: 22px; }
.content li { margin-bottom: 6px; }
.content p:last-child, .content ul:last-child { margin-bottom: 0; }
.content hr { border: 0; border-top: 1px solid var(--border); margin: 28px 0; }
.facts {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 16px;
  font-size: .95rem;
}
.facts th, .facts td {
  text-align: left;
  vertical-align: top;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
.facts th { width: 38%; color: var(--muted); font-weight: 600; }
.notice {
  background: #f0f7f3;
  border-left: 4px solid var(--accent);
  padding: 14px 18px;
  border-radius: 4px;
  color: var(--muted);
  font-size: .95rem;
}

/* Footer */
.layout-footer {
  border-top: 1px solid var(--border);
  background: var(--card);
  color: var(--muted);
  text-align: center;
  font-size: .875rem;
  padding: 24px 20px;
}
.layout-footer p { margin: 0 auto 6px; max-width: 720px; }
.layout-footer p:last-child { margin-bottom: 0; }
.layout-footer a { color: var(--muted); }

/* Mobile */
@media (max-width: 760px) {
  .menu-button { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--navy);
    padding: 8px 16px 16px;
    border-top: 1px solid rgba(255, 255, 255, .1);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 10px 12px; }
  main { margin: 24px auto; padding: 0 16px; }
  .content { padding: 24px 20px; }
  .content h1 { font-size: 1.35rem; }
  .content h2 { font-size: 1.1rem; }
  .facts th, .facts td { display: block; width: 100%; padding: 4px 0; border: 0; }
  .facts tr { display: block; padding: 8px 0; border-bottom: 1px solid var(--border); }
}