*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --c-bg: #0A1128;
  --c-panel: #111B44;
  --c-violet: #7A5AF5;
  --c-green: #53FFA0;
  --c-ice: #0AD4FF;
  --c-warm: #F5F1E8;
  --c-text: #E7E9F4;
  --c-muted: #8E96C0;
  --c-alert: #FF5C39;
  --c-frame: #070A16;
  --c-frame-2: #0B1124;
  --font-head: 'Rajdhani', 'Noto Sans SC', sans-serif;
  --font-body: 'Segoe UI', 'Noto Sans SC', sans-serif;
  --font-data: 'IBM Plex Mono', 'SFMono-Regular', monospace;
  --content-max: 80rem;
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-pill: 999px;
  --transition: 0.2s ease;
  --progress: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: clamp(5rem, 4rem + 4vw, 7.5rem);
}

body {
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.9rem + 0.8vw, 1.5rem);
  line-height: 1.75;
  color: var(--c-text);
  background-color: var(--c-bg);
  background-image:
    radial-gradient(1400px 700px at 88% -10%, rgba(122, 90, 245, 0.14), transparent 60%),
    radial-gradient(1100px 600px at -8% 18%, rgba(10, 212, 255, 0.08), transparent 55%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

main {
  display: block;
}

#main-content:focus {
  outline: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--c-text);
}

p {
  margin: 0;
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

a {
  color: var(--c-ice);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--c-green);
}

:focus-visible {
  outline: 3px solid var(--c-ice);
  outline-offset: 3px;
  border-radius: 6px;
}

::selection {
  background: rgba(122, 90, 245, 0.5);
  color: var(--c-text);
}

.container {
  width: min(100% - 2.5rem, var(--content-max));
  margin-inline: auto;
}

.section {
  padding-block: clamp(3.5rem, 2.5rem + 4vw, 7rem);
  scroll-margin-block: 2rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-data);
  font-size: 0.875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-green);
}

.eyebrow::before {
  content: "";
  display: inline-block;
  width: 1.5rem;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--c-green);
}

.section-title {
  margin-top: 0.5rem;
  font-size: clamp(2rem, 1.6rem + 1.6vw, 4rem);
  line-height: 1.05;
}

.prose {
  max-width: 65ch;
}

.prose > * + * {
  margin-top: 1em;
}

.data-num {
  font-family: var(--font-data);
  font-weight: 500;
  letter-spacing: 0.02em;
  font-feature-settings: "tnum";
  font-size: 1.4em;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  background: var(--c-violet);
  color: #FFFFFF;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.03em;
  line-height: 1.2;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), border-color var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(122, 90, 245, 0.35);
  color: #FFFFFF;
}

.btn:active {
  transform: translateY(0);
}

.btn--ghost {
  background: rgba(122, 90, 245, 0.1);
  border-color: rgba(122, 90, 245, 0.55);
  color: var(--c-text);
}

.btn--ghost:hover {
  border-color: var(--c-violet);
  background: rgba(122, 90, 245, 0.2);
  color: var(--c-text);
}

.btn--green {
  background: var(--c-green);
  color: #07100B;
}

.btn--green:hover {
  box-shadow: 0 10px 24px rgba(83, 255, 160, 0.3);
  color: #07100B;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-pill);
  background: rgba(122, 90, 245, 0.12);
  border: 1px solid rgba(122, 90, 245, 0.4);
  color: var(--c-ice);
  font-family: var(--font-data);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  line-height: 1.4;
}

.tag--green {
  background: rgba(83, 255, 160, 0.1);
  border-color: rgba(83, 255, 160, 0.4);
  color: var(--c-green);
}

.panel {
  background: var(--c-panel);
  border: 1px solid rgba(10, 212, 255, 0.14);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 1rem + 1.5vw, 3rem);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.panel--warm {
  background: var(--c-warm);
  color: var(--c-frame);
  border-color: rgba(7, 10, 22, 0.1);
}

.panel--warm h1,
.panel--warm h2,
.panel--warm h3 {
  color: var(--c-frame);
}

.card {
  background: var(--c-panel);
  border: 1px solid rgba(10, 212, 255, 0.14);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(10, 212, 255, 0.45);
  box-shadow: 0 16px 36px rgba(7, 10, 22, 0.5), 0 0 0 1px rgba(10, 212, 255, 0.12);
}

.frame {
  position: relative;
  background: linear-gradient(135deg, rgba(17, 27, 68, 0.85), rgba(7, 10, 22, 0.7));
  border: 1px solid rgba(10, 212, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 1rem + 1.5vw, 2.5rem);
  box-shadow: inset 0 0 0 1px rgba(122, 90, 245, 0.1), 0 20px 48px rgba(7, 10, 22, 0.4);
}

.frame::before {
  content: attr(data-index);
  position: absolute;
  top: -0.7em;
  left: 1.5em;
  padding: 0 0.6em;
  background: var(--c-bg);
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--c-green);
}

.frame::after {
  content: "";
  position: absolute;
  top: 0.85rem;
  right: 0.85rem;
  width: 10px;
  height: 10px;
  border-top: 2px solid var(--c-violet);
  border-right: 2px solid var(--c-violet);
  border-radius: 0 4px 0 0;
  opacity: 0.6;
}

.media {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, var(--c-panel), var(--c-frame-2));
  border: 1px solid rgba(10, 212, 255, 0.14);
  color: var(--c-muted);
}

.media::before {
  content: attr(data-caption);
  display: inline-flex;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-pill);
  background: rgba(7, 10, 22, 0.72);
  font-family: var(--font-data);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--c-muted);
}

.media--wide {
  aspect-ratio: 16 / 7;
  min-height: 0;
}

.media--tall {
  aspect-ratio: 3 / 4;
  min-height: 0;
}

.media--square {
  aspect-ratio: 1;
  min-height: 0;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-family: var(--font-data);
  font-size: 0.875rem;
  color: var(--c-muted);
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: var(--c-muted);
}

.breadcrumb-item a {
  color: var(--c-ice);
}

.breadcrumb-item a:hover {
  color: var(--c-green);
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 2000;
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius-md);
  background: var(--c-green);
  color: var(--c-frame);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.9375rem;
  text-decoration: none;
  transform: translateY(-400%);
  transition: transform var(--transition);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  color: var(--c-frame);
  outline: 2px solid var(--c-ice);
  outline-offset: 2px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(7, 10, 22, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 12px 34px rgba(7, 10, 22, 0.45);
}

.site-header__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--content-max);
  margin-inline: auto;
  padding: 0.3rem 1.25rem;
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--c-muted);
  border-bottom: 1px solid rgba(10, 212, 255, 0.12);
}

.site-meta {
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--c-muted);
}

.site-header__utility {
  display: inline-flex;
  gap: 0.85rem;
}

.site-utility-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  color: var(--c-muted);
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.site-utility-link::before {
  content: "//";
  color: var(--c-violet);
  font-size: 0.7rem;
}

.site-utility-link:hover {
  color: var(--c-green);
}

.site-header__main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--content-max);
  margin-inline: auto;
  padding: 0.75rem 1.25rem;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--c-text);
  text-decoration: none;
  min-width: 0;
}

.site-brand:hover .site-brand__name {
  color: var(--c-green);
}

.site-brand__name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.5rem;
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--c-text);
}

.site-brand__text {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--c-muted);
  white-space: nowrap;
}

.site-brand__suffix {
  display: inline-flex;
  align-items: center;
  padding: 0.16rem 0.5rem;
  border-radius: var(--radius-pill);
  background: rgba(122, 90, 245, 0.16);
  border: 1px solid rgba(122, 90, 245, 0.4);
  color: var(--c-ice);
  font-family: var(--font-data);
  font-size: 0.625rem;
  letter-spacing: 0.08em;
  line-height: 1.3;
  white-space: nowrap;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  counter-reset: nav;
}

.site-nav__item {
  position: relative;
  counter-increment: nav;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.65rem;
  border-radius: var(--radius-md);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.03em;
  color: var(--c-text);
  white-space: nowrap;
  transition: background-color var(--transition), color var(--transition), box-shadow var(--transition);
}

.site-nav__link::before {
  content: counter(nav, decimal-leading-zero);
  font-family: var(--font-data);
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--c-muted);
}

.site-nav__link:hover {
  color: var(--c-green);
  background-color: rgba(83, 255, 160, 0.08);
}

.site-nav__link[aria-current="page"] {
  color: var(--c-green);
  background-color: rgba(83, 255, 160, 0.08);
  box-shadow: inset 0 -2px 0 var(--c-green);
}

.site-nav__link[aria-current="page"]::before {
  color: var(--c-green);
}

.site-header__aside {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.site-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(10, 212, 255, 0.2);
  background: rgba(7, 10, 22, 0.4);
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--c-muted);
  white-space: nowrap;
}

.site-chip__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-green);
  box-shadow: 0 0 8px var(--c-green);
  animation: site-pulse 2.4s ease-in-out infinite;
}

@keyframes site-pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(0.75);
  }
}

.site-nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-md);
  background: var(--c-panel);
  border: 1px solid rgba(10, 212, 255, 0.28);
  color: var(--c-text);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color var(--transition), background-color var(--transition), color var(--transition);
}

.site-nav-toggle:hover {
  border-color: var(--c-green);
  color: var(--c-green);
}

.site-nav-toggle__label {
  line-height: 1;
}

.site-nav-toggle__icon {
  position: relative;
  display: inline-block;
  width: 18px;
  height: 12px;
  flex-shrink: 0;
  color: currentColor;
}

.site-nav-toggle__bar {
  position: absolute;
  left: 0;
  top: 50%;
  width: 100%;
  height: 2px;
  background: currentColor;
  transform: translateY(-50%);
  transition: opacity var(--transition);
}

.site-nav-toggle__icon::before,
.site-nav-toggle__icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform var(--transition), top var(--transition), bottom var(--transition);
}

.site-nav-toggle__icon::before {
  top: 0;
}

.site-nav-toggle__icon::after {
  bottom: 0;
}

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar {
  opacity: 0;
}

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__icon::before {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__icon::after {
  top: 50%;
  bottom: auto;
  transform: translateY(-50%) rotate(-45deg);
}

.site-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: rgba(10, 212, 255, 0.1);
  pointer-events: none;
}

.site-progress::after {
  content: "";
  position: absolute;
  inset: 0;
  transform-origin: left center;
  transform: scaleX(var(--progress, 0));
  background: linear-gradient(90deg, var(--c-violet), var(--c-green));
  box-shadow: 0 0 10px rgba(83, 255, 160, 0.6);
}

.site-footer {
  position: relative;
  margin-top: clamp(4rem, 3rem + 4vw, 7rem);
  background: var(--c-frame);
  color: var(--c-muted);
  font-size: 0.9375rem;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: repeating-linear-gradient(90deg, var(--c-violet) 0 2px, transparent 2px 14px);
  opacity: 0.3;
}

.site-footer__top {
  position: relative;
  display: grid;
  grid-template-columns: 1.65fr 0.75fr 0.75fr 1.1fr;
  gap: clamp(1.5rem, 3vw, 3.5rem);
  max-width: var(--content-max);
  margin-inline: auto;
  padding: clamp(2.5rem, 4vw, 4.5rem) 1.25rem 2.5rem;
  background: radial-gradient(1200px 400px at 15% 0%, rgba(122, 90, 245, 0.07), transparent 60%);
}

.site-brand--footer {
  margin-bottom: 1rem;
}

.site-brand--footer .site-brand__name {
  font-size: 1.7rem;
}

.site-footer__desc {
  max-width: 44rem;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--c-muted);
}

.site-footer__note {
  margin-top: 1rem;
  padding-left: 0.9rem;
  border-left: 3px solid var(--c-alert);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--c-muted);
}

.site-footer__title {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 1rem;
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-text);
}

.site-footer__title::before {
  content: "//";
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--c-violet);
}

.site-footer__title--contact {
  margin-top: 1.75rem;
}

.site-footer__links {
  display: grid;
  gap: 0.55rem;
}

.site-footer__links a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--c-muted);
}

.site-footer__links a::before {
  content: "›";
  color: var(--c-ice);
  font-family: var(--font-data);
  font-size: 0.875rem;
  line-height: 1;
}

.site-footer__links a:hover {
  color: var(--c-green);
}

.site-footer__contact {
  display: grid;
  gap: 0.4rem;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--c-muted);
}

.site-footer__contact li {
  position: relative;
  padding-left: 1.1rem;
  word-break: break-word;
}

.site-footer__contact li::before {
  content: "#";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--c-violet);
  font-family: var(--font-data);
  font-size: 0.75rem;
}

.site-footer__bottom {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem 1.25rem;
  max-width: var(--content-max);
  margin-inline: auto;
  padding: 1.25rem 1.25rem 0.75rem;
  font-family: var(--font-data);
  font-size: 0.8125rem;
  color: var(--c-muted);
}

.site-footer__copyright {
  margin-right: auto;
}

.site-top {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(10, 212, 255, 0.22);
  background: var(--c-panel);
  color: var(--c-text);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), transform var(--transition), background-color var(--transition);
}

.site-top:hover {
  border-color: var(--c-green);
  color: var(--c-green);
  transform: translateY(-2px);
}

.site-footer__trust {
  position: relative;
  max-width: var(--content-max);
  margin-inline: auto;
  padding: 1rem 1.25rem 1.5rem;
  border-top: 1px dashed rgba(10, 212, 255, 0.16);
  font-family: var(--font-data);
  font-size: 0.75rem;
  line-height: 1.8;
  color: var(--c-muted);
}

@media (max-width: 59.999em) {
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 1001;
    padding: 0.75rem 1.25rem 1.25rem;
    background: rgba(7, 10, 22, 0.96);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(10, 212, 255, 0.2);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  }

  .site-nav[data-open] {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
  }

  .site-nav__link {
    width: 100%;
    padding: 0.7rem 0.8rem;
    font-size: 1.05rem;
  }

  .site-nav__link::before {
    content: counter(nav, decimal-leading-zero) "  /";
  }

  .site-footer__top {
    grid-template-columns: 1fr 1fr;
  }

  .site-footer__about {
    grid-column: 1 / -1;
  }

  .site-footer__bottom {
    justify-content: center;
  }

  .site-footer__copyright {
    margin-right: 0;
  }
}

@media (min-width: 60em) {
  .site-nav-toggle {
    display: none;
  }
}

@media (max-width: 47.999em) {
  .site-header__meta {
    display: none;
  }

  .site-chip {
    display: none;
  }

  .site-brand__text {
    display: none;
  }

  .grid--2,
  .grid--3 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 39.999em) {
  .site-footer__top {
    grid-template-columns: 1fr;
  }

  .site-footer__about {
    grid-column: auto;
  }

  .site-footer__bottom {
    flex-direction: column;
    text-align: center;
  }

  .site-top {
    width: 100%;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }
}