:root {
  --color-bg: #0A0E1A;
  --color-neon: #00FFA3;
  --color-gray: #8A93A6;
  --color-orange: #FF9F1C;
  --color-white: #F5F7FA;
  --color-card: #141B2D;
  --color-moss: #3D6B4F;
  --color-terracotta: #C97A5A;
  --font-headline: "DIN Condensed", "Oswald", "Arial Narrow", sans-serif;
  --font-body: "IBM Plex Sans", "Noto Sans SC", sans-serif;
  --font-data: "Roboto Mono", "Source Code Pro", monospace;
  --side-nav-width: 16rem;
  --space-xs: .5rem;
  --space-sm: .75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 3rem;
  --header-height-mobile: 3.5rem;
  --transition-fast: .2s ease;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-white);
  background: var(--color-bg);
}

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

ul, ol {
  margin: 0;
  padding: 0;
}

p {
  margin: 0 0 var(--space-md);
}

a {
  color: var(--color-neon);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-orange);
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--color-orange);
  outline-offset: 2px;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headline);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 var(--space-md);
  color: var(--color-white);
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
}

h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
}

h3 {
  font-size: 1.25rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 3000;
  padding: .5rem 1rem;
  background: var(--color-neon);
  color: var(--color-bg);
  font-weight: 700;
  transform: translateY(-150%);
  transition: transform .2s;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  width: var(--side-nav-width);
  background:
    radial-gradient(circle at 20% 0%, rgba(0, 255, 163, .06), transparent 50%),
    var(--color-card);
  border-right: 1px solid rgba(138, 147, 166, .2);
  padding: var(--space-lg) var(--space-md) var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  z-index: 1000;
  overflow: hidden;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: .25rem;
  flex-shrink: 0;
}

.brand__link {
  display: inline-flex;
  align-items: baseline;
  gap: .125rem;
  text-decoration: none;
  color: var(--color-white);
}

.brand__mark {
  font-family: var(--font-headline);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-neon);
  letter-spacing: .03em;
}

.brand__word {
  font-size: 1.25rem;
  font-weight: 700;
}

.brand__tagline {
  font-size: .75rem;
  color: var(--color-gray);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.side-nav {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}

.nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .25rem;
}

.nav-list__item {
  display: flex;
}

.menu-link {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
  padding: .625rem .75rem .625rem 1rem;
  color: var(--color-gray);
  font-size: .9375rem;
  font-weight: 500;
  letter-spacing: .02em;
  border-left: 2px solid transparent;
  transition: color .2s, border-color .2s;
  text-decoration: none;
  z-index: 0;
}

.menu-link::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(90deg, rgba(0, 255, 163, .12), rgba(255, 159, 28, .04));
  clip-path: polygon(0 0, calc(100% - .5rem) 0, 100% 100%, 0 100%);
  opacity: 0;
  transition: opacity .2s;
}

.menu-link:hover,
.menu-link:focus-visible,
.menu-link[aria-current="page"] {
  color: var(--color-neon);
  border-left-color: var(--color-neon);
}

.menu-link:hover::after,
.menu-link:focus-visible::after,
.menu-link[aria-current="page"]::after {
  opacity: 1;
}

.header-panel {
  margin-top: auto;
  padding-top: var(--space-md);
  border-top: 1px solid rgba(138, 147, 166, .15);
}

.header-status {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--color-gray);
  font-family: var(--font-data);
}

.status-dot {
  width: .5rem;
  height: .5rem;
  border-radius: 50%;
  background: var(--color-neon);
  box-shadow: 0 0 8px rgba(0, 255, 163, .6);
  animation: status-pulse 2s infinite;
}

@keyframes status-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .5; }
}

.nav-toggle {
  position: absolute;
  top: calc((var(--header-height-mobile) - 2.5rem) / 2);
  right: var(--space-md);
  z-index: 1100;
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  background: transparent;
  border: 1px solid rgba(0, 255, 163, .4);
  color: var(--color-neon);
  align-items: center;
  justify-content: center;
  padding: .5rem;
}

.nav-toggle__box {
  display: block;
  width: 1.25rem;
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: currentColor;
  margin: .2rem 0;
  transition: transform .25s, opacity .25s;
}

.back-to-top {
  position: fixed;
  bottom: var(--space-lg);
  left: calc(var(--side-nav-width) + var(--space-lg));
  z-index: 1500;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid rgba(0, 255, 163, .4);
  background: rgba(0, 255, 163, .08);
  color: var(--color-neon);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  clip-path: polygon(0 0, calc(100% - .5rem) 0, 100% 100%, 0 100%);
  opacity: 0;
  visibility: hidden;
  transform: translateY(.5rem);
  transition: opacity .25s, visibility .25s, transform .25s, background .25s;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: rgba(0, 255, 163, .2);
}

.scroll-progress {
  position: absolute;
  top: 0;
  bottom: 0;
  right: 0;
  width: 3px;
  background: rgba(138, 147, 166, .15);
}

.scroll-progress::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, var(--color-neon), var(--color-orange));
  transform: scaleY(var(--progress, 0));
  transform-origin: top;
  transition: transform .1s linear;
}

.site-main {
  margin-left: var(--side-nav-width);
  min-height: 70vh;
}

.container {
  width: 100%;
  max-width: 80rem;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-lg);
  padding-right: var(--space-lg);
}

.section {
  padding: var(--space-xl) 0;
}

.section--tight {
  padding: var(--space-lg) 0;
}

.grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(12, 1fr);
}

.grid__item--span-4 { grid-column: span 4; }
.grid__item--span-5 { grid-column: span 5; }
.grid__item--span-6 { grid-column: span 6; }
.grid__item--span-7 { grid-column: span 7; }
.grid__item--span-8 { grid-column: span 8; }
.grid__item--span-12 { grid-column: span 12; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .75rem 1.5rem;
  background: var(--color-neon);
  color: var(--color-bg);
  font-size: .875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  border: 1px solid var(--color-neon);
  clip-path: polygon(0 0, calc(100% - .625rem) 0, 100% 100%, 0 100%);
  cursor: pointer;
  text-decoration: none;
  transition: filter .2s, background .2s;
}

.btn:hover {
  filter: brightness(1.15);
  color: var(--color-bg);
}

.btn:focus-visible {
  outline: 2px solid var(--color-orange);
  outline-offset: 2px;
}

.btn--ghost {
  background: transparent;
  color: var(--color-neon);
}

.btn--ghost:hover {
  background: rgba(0, 255, 163, .08);
  color: var(--color-neon);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  align-items: center;
  padding: var(--space-md) 0;
  font-size: .875rem;
  color: var(--color-gray);
}

.breadcrumb a {
  color: var(--color-gray);
  text-decoration: none;
  transition: color .2s;
}

.breadcrumb a:hover {
  color: var(--color-neon);
}

.breadcrumb__separator {
  color: var(--color-gray);
}

.breadcrumb__current {
  color: var(--color-white);
}

.site-footer {
  background:
    radial-gradient(circle at 100% 0%, rgba(255, 159, 28, .06), transparent 40%),
    var(--color-card);
  border-top: 1px solid rgba(0, 255, 163, .2);
  margin-left: var(--side-nav-width);
  position: relative;
  padding: var(--space-xl) 0 0;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-neon), transparent 60%, var(--color-orange));
}

.footer-inner {
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 var(--space-lg) var(--space-lg);
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: var(--space-lg);
}

.footer-brand {
  display: flex;
  flex-direction: column;
}

.footer-brand__link {
  display: inline-flex;
  align-items: baseline;
  gap: .125rem;
  color: var(--color-white);
  text-decoration: none;
}

.footer-brand__mark {
  font-family: var(--font-headline);
  font-size: 1.5rem;
  color: var(--color-neon);
}

.footer-brand__name {
  font-size: 1.125rem;
  font-weight: 700;
}

.footer-tagline {
  margin-top: .25rem;
  font-size: .75rem;
  color: var(--color-gray);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.footer-nav {
  display: flex;
  flex-direction: column;
}

.footer-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.footer-nav-link {
  color: var(--color-gray);
  text-decoration: none;
  font-size: .875rem;
  transition: color .2s;
}

.footer-nav-link:hover {
  color: var(--color-neon);
}

.footer-contact {
  color: var(--color-gray);
  font-size: .875rem;
  font-style: normal;
  display: flex;
  flex-direction: column;
  gap: .25rem;
}

.footer-contact p {
  margin: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(138, 147, 166, .15);
  background: rgba(10, 14, 26, .35);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: .5rem;
  font-size: .75rem;
  color: var(--color-gray);
}

.footer-copy,
.footer-icp,
.footer-note {
  margin: 0;
}

.footer-note {
  flex-basis: 100%;
  text-align: center;
  margin-top: .25rem;
}

.footer-accent {
  position: absolute;
  right: -4rem;
  bottom: -4rem;
  width: 12rem;
  height: 12rem;
  background: radial-gradient(circle, rgba(0, 255, 163, .08), transparent 70%);
  pointer-events: none;
}

@media (max-width: 63.999em) {
  :root {
    --side-nav-width: 0px;
  }

  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: auto;
    width: 100%;
    height: var(--header-height-mobile);
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 0;
    padding: 0 var(--space-md);
    border-right: none;
    border-bottom: 1px solid rgba(0, 255, 163, .2);
    overflow: hidden;
  }

  .brand {
    flex-direction: row;
    align-items: baseline;
    gap: .25rem;
  }

  .brand__mark {
    font-size: 1.5rem;
  }

  .brand__word {
    font-size: 1rem;
  }

  .brand__tagline {
    display: none;
  }

  .side-nav {
    position: fixed;
    top: var(--header-height-mobile);
    left: 0;
    bottom: 0;
    width: min(20rem, 85vw);
    background: var(--color-card);
    transform: translateX(-105%);
    transition: transform .3s ease;
    box-shadow: 4px 0 24px rgba(0, 0, 0, .4);
    padding: var(--space-lg) var(--space-md);
    border-right: 1px solid rgba(0, 255, 163, .15);
  }

  .side-nav[data-open] {
    transform: translateX(0);
  }

  .nav-toggle {
    display: inline-flex;
    position: static;
    top: auto;
    right: auto;
  }

  .nav-list {
    gap: .15rem;
  }

  .menu-link {
    padding: .75rem .75rem .75rem .75rem;
  }

  .header-panel {
    margin-top: auto;
  }

  .back-to-top {
    left: auto;
    right: var(--space-md);
    bottom: var(--space-md);
  }

  .scroll-progress {
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    width: auto;
    height: 3px;
  }

  .scroll-progress::before {
    transform: scaleX(var(--progress, 0));
  }

  .site-main {
    margin-left: 0;
    padding-top: var(--header-height-mobile);
  }

  .site-footer {
    margin-left: 0;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-contact {
    grid-column: 1 / -1;
  }
}

@media (min-width: 48rem) and (max-width: 63.999em) {
  .grid__item--span-4,
  .grid__item--span-5,
  .grid__item--span-6,
  .grid__item--span-7,
  .grid__item--span-8 {
    grid-column: span 6;
  }
}

@media (max-width: 47.999em) {
  .grid__item--span-4,
  .grid__item--span-5,
  .grid__item--span-6,
  .grid__item--span-7,
  .grid__item--span-8,
  .grid__item--span-12 {
    grid-column: span 12;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    justify-content: center;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .back-to-top,
  .scroll-progress::before {
    transition: none;
  }
}