:root {
  --c-bg: #0A1929;
  --c-panel: #102A43;
  --c-accent: #00FFAB;
  --c-alert: #FF4D4D;
  --c-link: #00B4D8;
  --c-text: #F0F4F8;
  --c-muted: #B0C4DE;
  --c-line: #1A2D3D;
  --header-h: 4.75rem;
  --header-h-mobile: 4rem;
  --container: 80rem;
  --gutter: clamp(1rem, 3vw, 2rem);
  --font-display: "Archivo", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-data: "Roboto Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --shadow: 0 12px 30px rgba(0, 0, 0, 0.45);
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--c-accent);
  color: #0A1929;
}

h1, h2, h3, p, ul, ol, figure, blockquote {
  margin: 0;
}

ul[class], ol[class] {
  list-style: none;
  padding: 0;
  margin: 0;
}

a {
  color: var(--c-link);
  text-decoration: none;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

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

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

button, input {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 2px;
}

[hidden] {
  display: none !important;
}

.skip-link {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 200;
  background: var(--c-accent);
  color: #0A1929;
  font-family: var(--font-display);
  font-weight: 700;
  padding: .75rem 1.25rem;
  transform: translateY(-120%);
  transition: transform .18s ease;
}

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

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: linear-gradient(180deg, rgba(10, 25, 41, .82) 0%, rgba(10, 25, 41, .18) 100%);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
}

.site-header[data-scrolled="true"] {
  background: rgba(10, 25, 41, .97);
  border-bottom-color: var(--c-line);
  box-shadow: var(--shadow);
}

.site-header__bar {
  position: relative;
}

.site-header__bar::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--c-accent) 0%, var(--c-accent) 12%, var(--c-alert) 12%, var(--c-alert) 14%, transparent 14%, transparent 16%, var(--c-line) 16%, var(--c-line) 100%);
  opacity: .65;
  pointer-events: none;
}

.site-header__inner {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  height: var(--header-h-mobile);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

@media (min-width: 64rem) {
  .site-header__inner {
    height: var(--header-h);
  }
}

.site-brand {
  flex: 0 0 auto;
}

.site-brand__link {
  display: flex;
  align-items: center;
  gap: .75rem;
  min-width: 0;
}

.site-brand__mark {
  display: grid;
  place-items: center;
  width: 2.9rem;
  height: 1.9rem;
  background: var(--c-accent);
  color: #0A1929;
  font-family: var(--font-data);
  font-weight: 800;
  font-size: .82rem;
  letter-spacing: .03em;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}

.site-brand__text {
  display: block;
  min-width: 0;
}

.site-brand__name {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  line-height: 1.2;
  color: var(--c-text);
  white-space: nowrap;
}

.site-brand__tag {
  display: block;
  font-family: var(--font-data);
  font-size: .66rem;
  line-height: 1.5;
  color: var(--c-accent);
  letter-spacing: .12em;
  text-transform: uppercase;
}

.site-brand__link:hover .site-brand__name {
  color: var(--c-accent);
}

@media (max-width: 30rem) {
  .site-brand__tag {
    display: none;
  }

  .site-brand__name {
    font-size: .95rem;
  }

  .site-brand__mark {
    width: 2.6rem;
  }
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: .5rem;
  flex: 0 0 auto;
}

.search-toggle,
.nav-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .5rem .8rem;
  background: rgba(10, 25, 41, .35);
  color: var(--c-muted);
  border: 1px solid var(--c-line);
  cursor: pointer;
  font-family: var(--font-data);
  font-size: .78rem;
  line-height: 1;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.search-toggle:hover,
.nav-toggle:hover,
.search-toggle[aria-expanded="true"],
.nav-toggle[aria-expanded="true"] {
  color: var(--c-accent);
  border-color: var(--c-accent);
  background: rgba(0, 255, 171, .08);
}

.nav-toggle {
  display: inline-flex;
}

@media (min-width: 64rem) {
  .nav-toggle {
    display: none;
  }
}

.search-toggle__icon {
  position: relative;
  display: inline-block;
  width: .72rem;
  height: .72rem;
  border: 2px solid currentColor;
  border-radius: 50%;
  margin-right: .15rem;
}

.search-toggle__icon::after {
  content: "";
  position: absolute;
  width: .45rem;
  height: 2px;
  background: currentColor;
  right: -.32rem;
  bottom: -.22rem;
  transform: rotate(45deg);
}

.nav-toggle__icon {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 1rem;
  height: .75rem;
}

.nav-toggle__icon::before,
.nav-toggle__icon::after {
  content: "";
  height: 2px;
  background: currentColor;
}

.nav-toggle__icon span {
  display: block;
  height: 2px;
  background: currentColor;
}

@media (max-width: 36rem) {
  .nav-toggle__label,
  .search-toggle__label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }

  .search-toggle,
  .nav-toggle {
    padding: .55rem;
  }
}

.site-nav {
  position: fixed;
  z-index: 85;
  top: calc(var(--header-h-mobile) + .5rem);
  left: .75rem;
  right: .75rem;
  max-height: calc(100vh - var(--header-h-mobile) - 1rem);
  overflow: auto;
  background: rgba(10, 25, 41, .98);
  border: 1px solid var(--c-line);
  border-top-color: var(--c-accent);
  padding: .75rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity .16s ease, transform .16s ease, visibility .16s;
  pointer-events: none;
}

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

html[data-menu-open="true"] {
  overflow: hidden;
}

.site-nav__list {
  counter-reset: nav-index;
  display: grid;
  gap: .2rem;
}

.site-nav__item {
  margin: 0;
  list-style: none;
}

.site-nav__link {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  white-space: nowrap;
  padding: .8rem .6rem;
  color: var(--c-text);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .96rem;
  border-bottom: 1px solid var(--c-line);
}

.site-nav__link::before {
  counter-increment: nav-index;
  content: counter(nav-index, decimal-leading-zero) "/";
  font-family: var(--font-data);
  font-size: .66rem;
  color: var(--c-accent);
}

.site-nav__link:hover {
  color: var(--c-accent);
  background: rgba(0, 255, 171, .04);
}

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

.site-nav__foot {
  border-top: 1px solid var(--c-line);
  margin-top: .75rem;
  padding-top: .75rem;
}

.site-nav__feedback {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .6rem .5rem;
  color: var(--c-accent);
  font-family: var(--font-data);
  font-size: .8rem;
}

.site-nav__feedback::after {
  content: "↗";
  font-size: .9rem;
}

@media (min-width: 64rem) {
  .site-nav {
    position: static;
    z-index: auto;
    top: auto;
    left: auto;
    right: auto;
    max-height: none;
    overflow: visible;
    background: transparent;
    border: 0;
    padding: 0;
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
  }

  .site-nav__list {
    display: flex;
    gap: .15rem;
  }

  .site-nav__link {
    border: 0;
    border-bottom: 2px solid transparent;
    padding: .55rem .65rem;
    color: var(--c-muted);
    font-size: .9rem;
    background: transparent;
  }

  .site-nav__link::before {
    color: var(--c-muted);
    font-size: .6rem;
    margin-right: .1rem;
  }

  .site-nav__link:hover {
    color: var(--c-accent);
    background: transparent;
  }

  .site-nav__link[aria-current="page"] {
    color: var(--c-accent);
    border-bottom-color: var(--c-accent);
    background: transparent;
  }

  .site-nav__foot {
    display: none;
  }
}

.search-panel {
  position: fixed;
  z-index: 90;
  top: calc(var(--header-h-mobile) + .5rem);
  left: 50%;
  transform: translateX(-50%);
  width: min(100% - 1.5rem, 36rem);
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-top: 3px solid var(--c-accent);
  box-shadow: var(--shadow);
}

@media (min-width: 64rem) {
  .search-panel {
    top: calc(var(--header-h) + .5rem);
  }
}

.search-panel__inner {
  padding: .25rem .5rem .5rem;
}

.search-panel__field {
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--c-line);
}

.search-panel__prefix {
  padding-left: .75rem;
  color: var(--c-accent);
  font-family: var(--font-data);
  font-size: 1.1rem;
  line-height: 1;
}

.search-panel__input {
  width: 100%;
  padding: 1rem .75rem;
  background: transparent;
  border: 0;
  color: var(--c-text);
  font-size: .95rem;
  outline: 0;
}

.search-panel__input::placeholder {
  color: var(--c-muted);
  opacity: 1;
}

.search-panel__list {
  max-height: 60vh;
  overflow: auto;
  padding: .25rem 0;
}

.search-panel__link {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  padding: .65rem .8rem;
  color: var(--c-muted);
  border-left: 2px solid transparent;
  font-family: var(--font-data);
  font-size: .82rem;
}

.search-panel__link:hover,
.search-panel__link:focus {
  background: var(--c-panel);
  color: var(--c-accent);
  border-left-color: var(--c-accent);
}

.search-panel__name {
  font-family: var(--font-sans);
}

.search-panel__path {
  color: var(--c-muted);
  font-size: .75rem;
}

.search-panel__empty {
  padding: .85rem;
  font-family: var(--font-data);
  color: var(--c-alert);
  font-size: .85rem;
}

.site-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: rgba(0, 255, 171, .08);
  z-index: 1;
}

.site-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--c-accent), var(--c-alert));
  box-shadow: 0 0 12px rgba(0, 255, 171, .45);
}

.site-footer {
  position: relative;
  background: #071522;
  border-top: 1px solid var(--c-line);
  color: var(--c-muted);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--c-accent) 0%, var(--c-accent) 26%, transparent 26%, transparent 30%, var(--c-alert) 30%, var(--c-alert) 56%, transparent 56%, transparent 60%, var(--c-link) 60%, var(--c-link) 100%);
  opacity: .7;
}

.site-footer::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: 32%;
  height: 100%;
  background: repeating-linear-gradient(135deg, rgba(0, 180, 216, .05) 0 1px, transparent 1px 12px);
  pointer-events: none;
}

.site-footer__grid {
  position: relative;
  z-index: 1;
  max-width: var(--container);
  margin-inline: auto;
  padding: 3.5rem var(--gutter) 2.5rem;
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 48rem) {
  .site-footer__grid {
    grid-template-columns: 1.6fr 1fr 1fr;
    gap: 3rem;
  }
}

.site-footer__logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--c-text);
  letter-spacing: .02em;
}

.site-footer__tag {
  font-family: var(--font-data);
  font-size: .72rem;
  color: var(--c-accent);
  letter-spacing: .12em;
  margin-top: .35rem;
}

.site-footer__trust {
  margin-top: 1.25rem;
  max-width: 34rem;
  color: var(--c-muted);
  font-size: .92rem;
  line-height: 1.7;
  border-left: 2px solid var(--c-accent);
  padding-left: .9rem;
}

.site-footer__heading {
  font-family: var(--font-data);
  font-size: .78rem;
  letter-spacing: .16em;
  color: var(--c-accent);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.site-footer__heading::before {
  content: "// ";
  color: var(--c-alert);
}

.site-footer__links {
  display: grid;
  gap: .45rem;
}

.site-footer__links a {
  display: inline-block;
  color: var(--c-muted);
  border-bottom: 1px solid transparent;
  line-height: 1.4;
}

.site-footer__links a:hover {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

.site-footer__contact p,
.site-footer__contact address {
  margin: .35rem 0;
  font-style: normal;
  font-size: .92rem;
  color: var(--c-muted);
}

.site-footer__contact .site-footer__support {
  color: var(--c-muted);
  font-size: .82rem;
  border-top: 1px solid var(--c-line);
  padding-top: .75rem;
  margin-top: .75rem;
}

.site-footer__legal {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--c-line);
  padding: 1.2rem var(--gutter);
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 2rem;
  align-items: center;
  justify-content: center;
  max-width: var(--container);
  margin-inline: auto;
}

.site-footer__legal p {
  margin: 0;
  font-family: var(--font-data);
  font-size: .72rem;
  color: var(--c-muted);
}

.site-footer__legal p:first-child {
  color: var(--c-text);
}

@media (max-width: 40rem) {
  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding-top: 2.5rem;
  }

  .site-footer__legal {
    justify-content: flex-start;
  }
}

.site-main,
[id="main-content"] {
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

.site-main {
  width: min(100%, 78rem);
  margin-inline: auto;
  padding: calc(var(--header-h-mobile) + 2.75rem) var(--gutter) 4.5rem;
}

@media (min-width: 64rem) {
  .site-main {
    padding-top: calc(var(--header-h) + 3rem);
  }
}

.site-main--bleed {
  width: 100%;
  max-width: none;
  padding: 0;
}

.container {
  width: min(100%, var(--container));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .7rem 1.2rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .9rem;
  line-height: 1;
  color: var(--c-text);
  background: var(--c-panel);
  border: 1px solid var(--c-line);
  cursor: pointer;
  text-decoration: none;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}

.btn:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
}

.btn--primary {
  background: var(--c-accent);
  border-color: var(--c-accent);
  color: #0A1929;
}

.btn--primary:hover {
  background: transparent;
  color: var(--c-accent);
}

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

.btn--ghost:hover {
  background: var(--c-panel);
  color: var(--c-accent);
}

.btn--alert {
  background: var(--c-alert);
  border-color: var(--c-alert);
  color: #F0F4F8;
}

.btn--alert:hover {
  background: transparent;
  color: var(--c-alert);
}

.breadcrumb {
  margin-bottom: 1.5rem;
  font-family: var(--font-data);
  font-size: .8rem;
  color: var(--c-muted);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: .2rem;
  align-items: center;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--c-line);
  margin: 0 .45rem;
}

.breadcrumb__link {
  color: var(--c-link);
}

.breadcrumb__link[aria-current="page"] {
  color: var(--c-muted);
  pointer-events: none;
}

.section {
  padding: 3rem 0;
}

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.75rem;
  padding-bottom: .8rem;
  border-bottom: 1px solid var(--c-line);
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  line-height: 1.15;
  color: var(--c-text);
  margin: 0;
}

.section__title::before {
  content: "// ";
  color: var(--c-accent);
  font-family: var(--font-data);
  font-size: .58em;
}

.section__subtitle {
  font-family: var(--font-data);
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--c-muted);
  margin: 0;
  text-transform: uppercase;
}

.grid {
  display: grid;
  gap: 1rem;
}

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

@media (min-width: 48rem) {
  .grid--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

@media (min-width: 48rem) {
  .grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 64rem) {
  .grid--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.grid--4 {
  grid-template-columns: 1fr;
}

@media (min-width: 48rem) {
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 64rem) {
  .grid--4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.panel {
  position: relative;
  background: var(--c-panel);
  border: 1px solid var(--c-line);
  padding: 1.4rem;
}

.panel--cut {
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

.panel--accent {
  border-top: 3px solid var(--c-accent);
}

.panel--alert {
  border-top: 3px solid var(--c-alert);
}

.panel--link {
  transition: border-color .2s ease, background .2s ease;
}

.panel--link:hover {
  border-color: var(--c-accent);
  background: #0d2942;
}

.data-card {
  position: relative;
  background: var(--c-panel);
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-accent);
  padding: 1.1rem;
  transition: border-color .2s ease, background .2s ease;
}

.data-card:hover {
  border-color: var(--c-accent);
  background: #0d2942;
}

.data-card--alert {
  border-left-color: var(--c-alert);
}

.data-card--alert:hover {
  border-color: var(--c-alert);
}

.data-card__label {
  font-family: var(--font-data);
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.data-card__value {
  display: block;
  font-family: var(--font-data);
  font-size: 2rem;
  line-height: 1.15;
  color: var(--c-text);
  margin-top: .2rem;
}

.data-card__value--alert {
  color: var(--c-alert);
}

.data-card__value--accent {
  color: var(--c-accent);
}

.data-card__meta {
  display: block;
  font-family: var(--font-data);
  font-size: .72rem;
  color: var(--c-muted);
  margin-top: .35rem;
}

.timeline {
  position: relative;
  padding-left: 1.55rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: .42rem;
  top: .4rem;
  bottom: .4rem;
  width: 1px;
  background: linear-gradient(to bottom, var(--c-accent), var(--c-line) 60%, var(--c-alert));
}

.timeline__item {
  position: relative;
  padding: 0 0 1.1rem 1rem;
  border-bottom: 1px solid var(--c-line);
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: -1.43rem;
  top: .55rem;
  width: .55rem;
  height: .55rem;
  background: var(--c-accent);
  transform: rotate(45deg);
  box-shadow: 0 0 0 3px rgba(0, 255, 171, .12);
}

.timeline__meta {
  display: block;
  font-family: var(--font-data);
  font-size: .72rem;
  color: var(--c-muted);
  letter-spacing: .08em;
}

.timeline__body {
  color: var(--c-text);
  font-size: .95rem;
}

.image-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--c-panel) 0%, var(--c-bg) 70%);
  border: 1px solid var(--c-line);
  overflow: hidden;
}

.image-frame[data-aspect="wide"] {
  aspect-ratio: 16 / 9;
}

.image-frame[data-aspect="portrait"] {
  aspect-ratio: 3 / 4;
}

.image-frame[data-aspect="square"] {
  aspect-ratio: 1;
}

.image-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(135deg, rgba(0, 255, 171, .06) 0 1px, transparent 1px 10px);
  pointer-events: none;
}

.image-frame[data-caption]::before {
  content: attr(data-caption);
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  background: linear-gradient(transparent, rgba(10, 25, 41, .92));
  color: var(--c-text);
  font-family: var(--font-data);
  font-size: .75rem;
  padding: 2rem .8rem .6rem;
}

.image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.8) contrast(1.1);
}

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

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}