:root {
  --color-bg: #f5f7fa;
  --color-bg-contrast: #1d2233;
  --color-card: #fff;
  --color-primary: #2656e0;
  --color-primary-hover: #183ca3;
  --color-accent: #ffb300;
  --color-border: #e1e5eb;
  --color-shadow: rgba(60, 80, 120, 0.09);
  --color-text: #1a2233;
  --color-text-secondary: #4c5770;
  --color-footer-bg: #181c2a;
  --color-footer-text: #e7eaf2;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 8px;
  --shadow-lg: 0 8px 32px var(--color-shadow);
  --shadow-md: 0 2px 12px var(--color-shadow);
  --transition: 0.18s cubic-bezier(.4, 0, .2, 1);
}

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

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.2;
  min-height: 100vh;
  margin: 0;
}

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

table p {
  margin: 0;
}

.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 40;
  background: var(--color-card);
  box-shadow: 0 4px 22px var(--color-shadow);
  padding: 20px 0;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 40px;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 18px;
  min-height: 62px;
}

.site-logo {
  height: auto;
  display: block;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-left: auto;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  margin: 0;
}

.main-nav li {
  position: relative;
}

.main-nav a {
  display: inline-block;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  padding: 7px 16px;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
  outline: none;
}

.main-nav a:focus-visible {
  box-shadow: 0 0 0 2px var(--color-primary);
}

.main-nav a:hover,
.main-nav a:focus,
.main-nav a.active {
  background: var(--color-primary);
  color: #fff;
}

/* Dropdown */
.main-nav li>ul {
  display: none;
  position: absolute;
  left: 0;
  top: 120%;
  background: var(--color-card);
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-md);
  min-width: 184px;
  padding: 8px 0;
  z-index: 20;
  flex-direction: column;
  gap: 0;
}

.main-nav li:hover>ul,
.main-nav li:focus-within>ul {
  display: flex;
  animation: fadeIn .21s;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

.main-nav li>ul li a {
  padding: 8px 20px;
  width: 100%;
  color: var(--color-text-secondary);
  border-radius: 0;
}

.main-nav li>ul li a:hover,
.main-nav li>ul li a:focus {
  background: var(--color-primary);
  color: #fff;
}

.burger-btn {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 38px;
  height: 38px;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  margin-left: 14px;
  transition: background var(--transition);
  z-index: 51;
}

.burger-btn:focus-visible {
  box-shadow: 0 0 0 2px var(--color-primary);
}

.burger-bar {
  width: 26px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: transform var(--transition);
}

.site-bg {
  width: 100vw;
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  z-index: -10;
  pointer-events: none;
  background: linear-gradient(135deg, #f5f7fa 0%, #e9eef5 100%);
}

.site-main {
  padding-top: 78px;
  min-height: 100vh;
  margin-top: 60px;
}

.layout-box {
  max-width: 620px;
  margin: 0 auto;
  padding: 0 14px 36px 14px;
}

.card-block {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  margin-bottom: 26px;
  padding: 32px 22px 28px 22px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.hero {
  align-items: center;
  text-align: center;
  gap: 26px;
}

.hero-title {
  font-size: 2.06rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0;
}

.cta-link {
  display: block;
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  font-size: 1.07rem;
  padding: 11px 28px;
  border-radius: var(--radius-md);
  box-shadow: 0 2px 10px rgba(38, 86, 224, 0.08);
  text-decoration: none;
  margin-bottom: 0;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
  outline: none;
  cursor: pointer;
  max-width: 250px;
  margin: 20px auto;
  text-align: center;
}

.cta-link:focus-visible {
  box-shadow: 0 0 0 2px var(--color-accent);
}

.cta-link:hover,
.cta-link:focus {
  background: var(--color-primary-hover);
  transform: translateY(-1px) scale(1.04);
}

.content-wrapper {
  width: 100%;
}

.content-area>*:not(:last-child) {
  margin-bottom: 1.07em;
}

/* Images in content */
.content-area img,
.content-area .image-placeholder {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

/* Inserted CTA before H2 */
.content-area .cta-link {
  margin-bottom: 23px;
  margin-top: 2px;
}

/* Headings */
.hero-title,
.content-area h1 {
  margin-top: 0;
}

.content-area h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0 0 7px 0;
  color: var(--color-text);
}

.content-area h3 {
  font-size: 1.07rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin: 0 0 7px 0;
}

/* Table Styling */
.content-area table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: #fff;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: 0 1px 8px rgba(60, 80, 120, 0.05);
  margin-bottom: 1.5em;
  display: block;
  overflow: auto;
}

.content-area th,
.content-area td {
  border: 1px solid var(--color-border);
  padding: 10px 14px;
  text-align: left;
  font-size: 1rem;
}

.content-area th {
  background: #f3f5fa;
  font-weight: 600;
}

.content-area tr:nth-child(even) td {
  background: #f8fafc;
}

.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  font-size: 1rem;
  width: 100%;
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
}

/* Mobile Nav Overlay & Drawer */
.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(20, 24, 36, 0.68);
  z-index: 49;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.mobile-menu-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav {
  position: fixed;
  top: 0;
  right: -100vw;
  height: 100vh;
  width: 300px;
  max-width: 90vw;
  background: var(--color-card);
  box-shadow: -4px 0 28px var(--color-shadow);
  z-index: 50;
  padding: 34px 10px 26px 10px;
  display: flex;
  flex-direction: column;
  transition: right var(--transition);
  overflow-y: auto;
}

.mobile-nav.active {
  right: 0;
}

.mobile-nav ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.mobile-nav li {
  position: relative;
}

.mobile-nav a {
  display: block;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 1.10rem;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
  outline: none;
}

.mobile-nav a:focus-visible {
  box-shadow: 0 0 0 2px var(--color-primary);
}

.mobile-nav a:hover,
.mobile-nav a:focus,
.mobile-nav a.active {
  background: var(--color-primary);
  color: #fff;
}

.mobile-nav li>ul {
  display: none;
  flex-direction: column;
  margin-left: 11px;
  background: #f6f7fa;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  margin-top: 5px;
}

.mobile-nav li.open>ul {
  display: flex;
  animation: fadeIn .21s;
}

.mobile-nav li>a.has-submenu::after {
  content: '\25BC';
  display: inline-block;
  font-size: 0.84em;
  margin-left: 10px;
  transition: transform var(--transition);
}

.mobile-nav li.open>a.has-submenu::after {
  transform: rotate(-180deg);
}

@media (max-width: 1023px) {
  .main-nav {
    display: none;
  }

  .burger-btn {
    display: flex;
  }

  .mobile-nav {
    display: flex;
  }

  .mobile-menu-overlay {
    display: block;
  }
}

@media (min-width: 1024px) {
  .main-nav {
    display: flex;
  }

  .burger-btn,
  .mobile-nav,
  .mobile-menu-overlay {
    display: none !important;
  }
}

@media (min-width: 768px) {
  .layout-box {
    max-width: 700px;
    padding: 0 28px 44px 28px;
  }

  .card-block {
    padding: 38px 36px 34px 36px;
    margin-bottom: 36px;
  }
}

@media (min-width: 1024px) {
  .layout-box {
    max-width: 750px;
    padding: 0 0 54px 0;
  }

  .header-container {
    max-width: 1340px;
    padding: 0 32px;
  }
}

/* Focus-visible for all interactive elements */
:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--color-accent);
}

::-webkit-scrollbar {
  width: 9px;
  background: #f4f6fa;
}

::-webkit-scrollbar-thumb {
  background: #e2e6f2;
  border-radius: 6px;
}