:root {
  --color-background: #f6f8fb;
  --color-surface: #fff;
  --color-primary: #1672fa;
  --color-primary-hover: #125ece;
  --color-accent: #f7b32b;
  --color-text: #1e2330;
  --color-muted: #6c7280;
  --color-border: #e0e5ef;
  --color-shadow: rgba(30, 35, 48, 0.07);
  --color-footer-bg: #1e2330;
  --color-footer-text: #fff;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-md: 0 6px 28px var(--color-shadow), 0 1.5px 4px 0 var(--color-shadow);
  --transition: 0.18s cubic-bezier(.4, 0, .2, 1);
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  background: var(--color-background);
  color: var(--color-text);
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--color-surface);
  box-shadow: 0 2px 10px var(--color-shadow);
}

.header-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  height: 68px;
  justify-content: space-between;
}

.site-logo {
  height: 40px;
  width: auto;
  display: block;
}

.main-nav {
  display: flex;
  align-items: center;
  position: relative;
}

.nav-menu {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
  list-style: none;
}

.desktop-menu {
  display: none;
}

.nav-menu>li {
  position: relative;
}

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

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

.nav-menu a:hover,
.nav-menu a:active,
.nav-menu a.active-menu-item {
  background: var(--color-background);
  color: var(--color-primary);
}

/* Dropdown Menu */
.nav-menu li ul {
  display: none;
  position: absolute;
  left: 0;
  top: 110%;
  min-width: 170px;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 32px var(--color-shadow);
  padding: 8px 0;
  z-index: 10;
}

.nav-menu li:hover>ul,
.nav-menu li:focus-within>ul {
  display: block;
}

.nav-menu li ul li {
  width: 100%;
}

.nav-menu li ul a {
  padding: 10px 22px;
  white-space: nowrap;
  color: var(--color-text);
  background: transparent;
}

.nav-menu li ul a:hover,
.nav-menu li ul a:active {
  background: var(--color-background);
  color: var(--color-primary);
}

/* Mobile Navigation */
.nav-toggle {
  display: inline-flex;
  background: none;
  border: none;
  height: 40px;
  width: 40px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  margin-right: 0;
  border-radius: var(--radius-md);
  transition: background var(--transition);
  position: relative;
  z-index: 1201;
}

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

.burger {
  display: inline-block;
  width: 28px;
  height: 3px;
  background: var(--color-text);
  border-radius: 2px;
  position: relative;
  transition: background var(--transition);
}

.burger::before,
.burger::after {
  content: '';
  position: absolute;
  left: 0;
  width: 28px;
  height: 3px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.burger::before {
  top: -8px;
}

.burger::after {
  top: 8px;
}

.nav-toggle.open .burger {
  background: transparent;
}

.nav-toggle.open .burger::before {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle.open .burger::after {
  transform: translateY(-8px) rotate(-45deg);
}

.mobile-menu-overlay {
  display: none;
  position: fixed;
  z-index: 1200;
  left: 0;
  top: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(30, 35, 48, 0.62);
  opacity: 0;
  transition: opacity var(--transition);
}

.mobile-menu-panel {
  display: block;
  position: fixed;
  top: 0;
  right: -100vw;
  width: 82vw;
  max-width: 340px;
  height: 100vh;
  background: var(--color-surface);
  box-shadow: -4px 0 32px var(--color-shadow);
  z-index: 1202;
  border-radius: 16px 0 0 16px;
  padding-top: 80px;
  overflow-y: auto;
  transition: right var(--transition);
}

.mobile-menu-list {
  flex-direction: column;
  gap: 0;
  padding: 0 10px;
}

.mobile-menu-list>li {
  width: 100%;
  margin-bottom: 8px;
}

.mobile-menu-list a {
  width: 100%;
  display: block;
  padding: 13px 18px;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-weight: 500;
  background: transparent;
  transition: background var(--transition);
}

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

.mobile-menu-list a:hover,
.mobile-menu-list a:active {
  background: var(--color-background);
  color: var(--color-primary);
}

.mobile-menu-list li ul {
  display: none;
  position: static;
  background: none;
  box-shadow: none;
  border-radius: 0;
  padding: 0 0 0 14px;
}

.mobile-menu-list li.open>ul {
  display: block;
}

.mobile-menu-list li>a .submenu-arrow {
  float: right;
  font-size: 1.2em;
  transition: transform var(--transition);
}

.mobile-menu-list li.open>a .submenu-arrow {
  transform: rotate(90deg);
}

/* Show mobile menu */
body.mobile-menu-open {
  overflow: hidden;
}

body.mobile-menu-open .mobile-menu-overlay {
  display: block;
  opacity: 1;
}

body.mobile-menu-open .mobile-menu-panel {
  right: 0;
}

/* Responsive - Desktop */
@media (min-width: 768px) {
  .header-container {
    max-width: 1060px;
    padding: 0 32px;
    height: 76px;
  }

  .main-content-area {
    margin-top: 76px;
  }

  .desktop-menu {
    display: flex;
  }

  .nav-toggle,
  .mobile-menu-overlay,
  .mobile-menu-panel {
    display: none;
  }
}

@media (min-width: 1024px) {
  .header-container {
    max-width: 1200px;
  }

  .central-container {
    max-width: 800px;
  }
}

.main-content-area {
  width: 100%;
  margin-top: 68px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--color-background);
  padding-bottom: 60px;
}

.central-container {
  width: 100%;
  max-width: 90vw;
  margin: 0 auto;
  padding: 0 0 0 0;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

@media (min-width: 768px) {
  .central-container {
    max-width: 700px;
    gap: 36px;
  }
}

@media (min-width: 1024px) {
  .central-container {
    max-width: 720px;
    gap: 44px;
  }
}

.card-section {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 28px 18px 30px 18px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

@media (min-width: 768px) {
  .card-section {
    padding: 38px 38px 40px 38px;
    gap: 24px;
  }
}

.hero-section {
  align-items: center;
  text-align: center;
  gap: 22px;
  padding-top: 32px;
  padding-bottom: 32px;
}

.hero-title {
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 auto 10px auto;
  line-height: 1.22;
  letter-spacing: 0.01em;
}

.hero-cta {
  margin: 0 auto;
}

.hero-image {
  margin: 18px 0 0 0;
  width: 100%;
}

.hero-image>* {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-md);
  object-fit: cover;
  box-shadow: 0 3px 16px var(--color-shadow);
}

.content-section {
  width: 100%;
}

.content-inner {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* CTA Button */
.cta-btn {
  display: inline-block;
  padding: 9px 28px;
  font-size: 1.09rem;
  font-weight: 600;
  color: #fff;
  background: var(--color-primary);
  border-radius: var(--radius-md);
  border: none;
  text-align: center;
  text-decoration: none;
  box-shadow: 0 2px 8px var(--color-shadow);
  transition: background var(--transition), box-shadow var(--transition), color var(--transition), transform var(--transition);
  cursor: pointer;
  margin-bottom: 12px;
  margin-top: 0;
}

.cta-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--color-accent), 0 2px 8px var(--color-shadow);
}

.cta-btn:hover,
.cta-btn:active {
  background: var(--color-primary-hover);
  color: #fff;
  transform: translateY(-2px) scale(1.04);
  box-shadow: 0 5px 16px var(--color-shadow);
}

/* Images in content */
.content-inner img,
.content-inner .content-image {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  margin: 12px 0 14px 0;
  border-radius: var(--radius-md);
  box-shadow: 0 2px 10px var(--color-shadow);
  object-fit: cover;
}

/* Table styling */
.content-inner table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 1.5px 7px var(--color-shadow);
  margin: 16px 0;
  table-layout: auto;
  display: block;
  overflow: auto;
}

.content-inner table p {
  margin: 0;
}

.content-inner th,
.content-inner td {
  border: 1px solid var(--color-border);
  padding: 12px 14px;
  text-align: left;
  font-size: 1rem;
}

.content-inner th {
  background: var(--color-background);
  font-weight: 600;
  color: var(--color-text);
}

.content-inner tr {
  background: var(--color-surface);
}

.content-inner tr:nth-child(even) {
  background: #f9fbfd;
}

/* Headings (except h1) */
.content-inner h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
  margin: 0 0 10px 0;
}

.content-inner h3 {
  font-size: 1.13rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 7px 0;
}

.content-inner p,
.content-inner ul,
.content-inner ol {
  font-size: 1rem;
  color: var(--color-text);
  margin: 0 0 10px 0;
  line-height: 1.6;
}

/* Footer */
.site-footer {
  width: 100%;
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 20px 0 14px 0;
  text-align: center;
  letter-spacing: 0.02em;
  font-size: 1rem;
  position: relative;
}

.footer-inner {
  max-width: 720px;
  margin: 0 auto;
  opacity: .94;
}

/* Focus-visible for interactive elements */
button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--color-primary);
}

/* Scrollbar for mobile-menu */
.mobile-menu-panel {
  scrollbar-width: thin;
  scrollbar-color: var(--color-primary) var(--color-background);
}

.mobile-menu-panel::-webkit-scrollbar {
  width: 6px;
  background: var(--color-background);
}

.mobile-menu-panel::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: 4px;
}

/* Subtle fade-in animation for card sections */
.card-section {
}

.card-section.visible {

}

/* Hide scrollbars on overlay */
.mobile-menu-overlay {
  -webkit-overflow-scrolling: touch;
}