:root {
  --color-bg: #0f1115;
  --color-bg-elevated: #181a20;
  --color-bg-card: #20222a;
  --color-accent: #f5b942;
  --color-accent-hover: #ffc052;
  --color-neutral: #b7b3ab;
  --color-text: #f5f3ef;
  --color-text-secondary: #b7b3ab;
  --color-border: #2b2d33;
  --color-shadow: rgba(0,0,0,0.35);
  --radius-card: 20px;
  --radius-btn: 16px;
  --transition: 0.2s cubic-bezier(.4,0,.2,1);
  --header-height: 64px;
  --container-max: 700px;
  --container-pad: 20px;
  --section-gap: 32px;
  --section-gap-lg: 42px;
  --section-gap-sm: 24px;
}
* {
  box-sizing: border-box;
}
html {
  background: var(--color-bg);
  color-scheme: dark;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 16px;
  line-height: 1.2;
  margin: 0;
  min-height: 100vh;
  padding: 0;
}
.site-header {
  position: fixed;
  z-index: 1100;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: var(--color-bg-elevated);
  box-shadow: 0 2px 16px 0 rgba(10,10,15,0.32);
  display: flex;
  align-items: center;
  transition: background var(--transition);
}
.header-container {
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
  padding: 0 var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 40px;
}
.site-logo {
  display: block;
  height: 38px;
  width: auto;
}
.main-nav {
  display: none;
}
.main-nav ul {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}
.main-nav li {
  position: relative;
}
.main-nav a {
  display: inline-block;
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 8px;
  transition: background var(--transition), color var(--transition);
}
.main-nav a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
.main-nav a:hover,
.main-nav li:hover > a,
.main-nav a.active {
  background: var(--color-bg-card);
  color: var(--color-accent);
}
.main-nav li ul {
  position: absolute;
  left: 0;
  min-width: 170px;
  background: var(--color-bg-elevated);
  margin-top: 12px;
  border-radius: 14px;
  box-shadow: 0 8px 24px var(--color-shadow);
  display: none;
  flex-direction: column;
  padding: 8px 0;
  z-index: 100;
}
.main-nav li:hover > ul,
.main-nav li:focus-within > ul {
  display: flex;
}
.main-nav li ul li a {
  padding: 10px 20px;
  color: var(--color-neutral);
  font-weight: 400;
  border-radius: 8px;
}
.main-nav li ul li a:hover {
  background: var(--color-bg-card);
  color: var(--color-accent);
}
/* Burger button */
.burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 40px;
  width: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  position: relative;
  z-index: 1201;
}
.burger:focus-visible {
  outline: 2px solid var(--color-accent);
}
.burger-lines {
  width: 26px;
  height: 3px;
  background: var(--color-text);
  border-radius: 2px;
  position: relative;
  transition: background var(--transition);
}
.burger-lines::before, .burger-lines::after {
  content: '';
  position: absolute;
  width: 26px;
  height: 3px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), top var(--transition), opacity var(--transition);
}
.burger-lines::before {
  top: -9px;
  left: 0;
}
.burger-lines::after {
  top: 9px;
  left: 0;
}
.burger.open .burger-lines {
  background: transparent;
}
.burger.open .burger-lines::before {
  transform: rotate(45deg) translate(5px,5px);
  top: 0;
}
.burger.open .burger-lines::after {
  transform: rotate(-45deg) translate(5px,-5px);
  top: 0;
}
/* Mobile menu overlay */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  z-index: 1200;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(19,21,26,0.86);
  transition: opacity var(--transition);
  opacity: 0;
  pointer-events: none;
}
.mobile-menu-overlay.active {
  display: block;
  opacity: 1;
  pointer-events: auto;
}
/* Mobile menu */
.mobile-menu {
  position: fixed;
  z-index: 1202;
  top: 0;
  right: -100vw;
  width: 92vw;
  max-width: 370px;
  height: 100vh;
  background: var(--color-bg-elevated);
  padding: 40px 10px 24px 10px;
  box-shadow: -8px 0 32px -12px var(--color-shadow);
  transition: right var(--transition);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.mobile-menu.active {
  right: 0;
}
.mobile-menu ul {
  display: flex;
  flex-direction: column;
  gap: 0;
  list-style: none;
  padding: 0;
  margin: 0;
}
.mobile-menu li {
  position: relative;
}
.mobile-menu a {
  display: block;
  padding: 14px 10px;
  color: var(--color-text);
  text-decoration: none;
  font-size: 1.06em;
  font-weight: 500;
  border-radius: 10px;
  transition: background var(--transition), color var(--transition);
}
.mobile-menu a:focus-visible {
  outline: 2px solid var(--color-accent);
}
.mobile-menu a:hover,
.mobile-menu a.active {
  background: var(--color-bg-card);
  color: var(--color-accent);
}
.mobile-menu li ul {
  display: none;
  flex-direction: column;
  background: var(--color-bg-card);
  border-radius: 12px;
  margin: 4px 0 8px 10px;
  padding: 6px 0 8px 10px;
}
.mobile-menu li.open > ul {
  display: flex;
}
.mobile-menu li.has-submenu > a::after {
  content: '\25BC';
  display: inline-block;
  font-size: 0.82em;
  margin-left: 8px;
  vertical-align: middle;
  opacity: 0.7;
  transition: transform var(--transition);
}
.mobile-menu li.open > a::after {
  transform: rotate(-180deg);
}

/* Main Content Layout */
.main-content {
  min-height: 100vh;
  padding-top: var(--header-height);
  padding-bottom: 36px;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.content-wrapper {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  display: flex;
  flex-direction: column;
  gap: var(--section-gap);
}
.hero-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-card);
  box-shadow: 0 6px 24px 0 var(--color-shadow);
  padding: 32px 18px 28px 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 19px;
  margin-top: var(--section-gap-sm);
}
.hero-title {
  text-align: center;
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 0.5em 0;
  letter-spacing: -0.01em;
}
.hero-cta {
  margin-top: 7px;
}
.card-section {
  background: var(--color-bg-elevated);
  border-radius: 18px;
  box-shadow: 0 4px 16px 0 var(--color-shadow);
  padding: 26px 14px 22px 14px;
  display: flex;
  flex-direction: column;
  gap: var(--section-gap-sm);
}
.content-container {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
/* CTA Button */
.cta-btn {
  display: inline-block;
  background: var(--color-accent);
  color: #191711;
  font-weight: 700;
  font-size: 1.07em;
  padding: 12px 28px;
  border: none;
  border-radius: var(--radius-btn);
  text-align: center;
  text-decoration: none;
  box-shadow: 0 2px 8px 0 rgba(245,185,66,0.10);
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
  margin: 0 auto 20px auto;
  cursor: pointer;
  outline: none;
}
.cta-btn:focus-visible {
  outline: 2px solid var(--color-accent-hover);
  outline-offset: 2px;
}
.cta-btn:hover {
  background: var(--color-accent-hover);
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 8px 28px 0 rgba(245,185,66,0.13);
}
/* Content Headings */
.content-container h2 {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--color-accent);
  margin: 0 0 0.75em 0;
  letter-spacing: -0.01em;
}
.content-container h3 {
  font-size: 1.13rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin: 18px 0 0.6em 0;
}
/* Images */
.content-container img,
.content-container .system-image,
.card-section img,
.hero-card img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 13px;
  margin: 14px 0 18px 0;
  box-shadow: 0 2px 10px 0 rgba(20,18,14,0.12);
}
/* Tables */
.content-container table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--color-bg-card);
  border-radius: 13px;
  overflow: hidden;
  margin: 16px 0 20px 0;
  font-size: 1em;
  color: var(--color-text);
  box-shadow: 0 2px 9px 0 var(--color-shadow);
}
.content-container th,
.content-container td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}
.content-container th {
  background: var(--color-bg-elevated);
  color: var(--color-accent);
  font-weight: 600;
}
.content-container tr:last-child td {
  border-bottom: none;
}
.content-container thead tr th:first-child,
.content-container tbody tr td:first-child {
  border-left: none;
}
.content-container thead tr th,
.content-container tbody tr td {
  border-right: none;
}
/* Footer */
.site-footer {
  width: 100%;
  background: #16181e;
  color: var(--color-neutral);
  font-size: 0.98em;
  padding: 24px 0 18px 0;
  text-align: center;
  margin-top: var(--section-gap-lg);
  border-top: 1px solid var(--color-border);
}
.footer-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}
/* Focus styles for all interactive elements */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
/* Responsive Styles */
@media (min-width: 768px) {
  .header-container,
  .footer-container,
  .content-wrapper {
    max-width: 900px;
    padding-left: 36px;
    padding-right: 36px;
  }
  .main-content {
    padding-bottom: 52px;
  }
  .hero-card {
    padding: 44px 38px 40px 38px;
    margin-top: var(--section-gap);
  }
  .card-section {
    padding: 34px 26px 32px 26px;
  }
  .content-wrapper {
    gap: var(--section-gap-lg);
  }
}
@media (min-width: 1024px) {
  .header-container,
  .footer-container,
  .content-wrapper {
    max-width: 1200px;
    padding-left: 0;
    padding-right: 0;
  }
  .main-nav {
    display: block;
  }
  .burger {
    display: none;
  }
  .mobile-menu,
  .mobile-menu-overlay {
    display: none !important;
  }
  .hero-card {
    padding: 54px 58px 50px 58px;
  }
  .card-section {
    padding: 48px 50px 42px 50px;
    border-radius: 20px;
  }
  .content-wrapper {
    gap: 56px;
  }
}
@media (min-width: 1450px) {
  .header-container,
  .footer-container,
  .content-wrapper {
    max-width: 1320px;
  }
}
::-webkit-scrollbar {
  width: 10px;
  background: var(--color-bg-elevated);
}
::-webkit-scrollbar-thumb {
  background: var(--color-bg-card);
  border-radius: 6px;
}

@media (max-width: 767px) {
  .content-container table {
  display: block;
    overflow: auto;
}
}