:root {
  --ink: #0B1220;
  --panel: #131F33;
  --paper: #F2EBDD;
  --line: #1B3A5C;
  --neon: #B8FF00;
  --orange: #FF5C00;
  --cyan: #00E5DF;
  --yellow: #FFD200;
  --slate: #8A9BB5;
  --font-display: "Roboto Condensed", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", "SF Mono", monospace;
  --header-w: 96px;
  --content-max: 1440px;
  --nav-break: 1080px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--cyan);
}

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

::selection {
  background: var(--neon);
  color: var(--ink);
}

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

#main-content {
  scroll-margin-top: 72px;
}

section[id] {
  scroll-margin-top: 76px;
}

.skip-link {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 200;
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  background: var(--neon);
  color: var(--ink);
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 700;
  font-size: 0.875rem;
  text-decoration: none;
  transform: translateY(-120%);
  transition: transform 0.2s ease;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  width: var(--header-w);
  height: 100vh;
  background: var(--panel);
  border-right: 1px solid var(--line);
}

.site-header__rail {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  height: 100%;
  padding: 24px 10px 18px;
  background: linear-gradient(180deg, rgba(0, 229, 223, 0.06) 0%, rgba(0, 0, 0, 0) 30%), var(--panel);
  overflow: hidden;
}

.site-header__rail::after {
  content: "";
  position: absolute;
  top: 0;
  right: -1px;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--neon) 0%, var(--cyan) 35%, var(--orange) 80%);
  opacity: 0.9;
}

.site-header .site-brand {
  display: block;
  margin-bottom: 32px;
  text-decoration: none;
}

.site-brand__mark {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: 0.06em;
  line-height: 1.2;
  color: var(--neon);
}

.site-brand__official {
  display: block;
  margin-top: 0.375rem;
  font-family: var(--font-body);
  font-size: 0.625rem;
  line-height: 1.5;
  color: var(--slate);
  letter-spacing: 0.02em;
  word-break: break-word;
}

.site-nav-toggle {
  display: none;
}

.site-nav-toggle__box {
  position: relative;
  width: 18px;
  height: 14px;
}

.site-nav-toggle__bar {
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--neon);
  transition: top 0.2s ease, transform 0.2s ease, opacity 0.2s ease;
}

.site-nav-toggle__bar:nth-child(1) {
  top: 0;
}

.site-nav-toggle__bar:nth-child(2) {
  top: 6px;
}

.site-nav-toggle__bar:nth-child(3) {
  top: 12px;
}

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(1) {
  top: 6px;
  transform: rotate(45deg);
}

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(3) {
  top: 6px;
  transform: rotate(-45deg);
}

.site-nav-toggle__text {
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--paper);
}

.site-nav {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  visibility: visible;
}

.site-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
  overflow-y: auto;
}

.site-nav__item {
  display: block;
}

.site-nav__link {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  padding: 10px 8px;
  text-decoration: none;
  color: var(--slate);
  font-size: 0.8125rem;
  border-left: 3px solid transparent;
  transition: background 0.15s ease, color 0.15s ease;
}

.site-nav__link:hover {
  color: var(--paper);
  background: rgba(184, 255, 0, 0.06);
}

.site-nav__link[aria-current="page"] {
  color: var(--neon);
  border-left-color: var(--neon);
  background: rgba(184, 255, 0, 0.08);
}

.site-nav__index {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: 0.08em;
}

.site-nav__label {
  display: block;
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
}

.site-nav__status {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 6px;
  padding-top: 18px;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  line-height: 1.5;
  color: var(--slate);
  border-top: 1px solid var(--line);
}

.status-dot {
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 0 0 rgba(184, 255, 0, 0.6);
  animation: status-pulse 1.8s ease-out infinite;
}

@keyframes status-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(184, 255, 0, 0.55);
  }
  70% {
    box-shadow: 0 0 0 7px rgba(184, 255, 0, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(184, 255, 0, 0);
  }
}

.site-footer {
  position: relative;
  background: var(--panel);
  border-top: 1px solid var(--line);
  color: var(--paper);
}

.site-footer::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--neon) 0%, var(--cyan) 35%, var(--orange) 90%);
}

.site-footer__inner {
  padding-block: 56px 40px;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr 0.9fr 1.2fr;
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
}

.site-footer__about,
.site-footer__nav,
.site-footer__legal,
.site-footer__contact {
  min-width: 0;
}

.site-footer__title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.site-footer__desc {
  margin-top: 12px;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--slate);
}

.site-footer .site-brand {
  display: inline-block;
  text-decoration: none;
}

.site-footer__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.site-footer__links a {
  color: var(--slate);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.15s ease;
}

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

.site-footer__contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
  font-size: 0.8125rem;
  color: var(--slate);
}

.site-footer__icp,
.site-footer__copy {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--slate);
}

.site-footer__statement {
  margin-top: 48px;
  padding: 16px 20px;
  border-left: 3px solid var(--orange);
  background: rgba(255, 92, 0, 0.06);
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--slate);
}

.container {
  width: min(var(--content-max), 100%);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 48px);
}

.site-main {
  min-height: 70vh;
}

.section-head {
  margin-bottom: 1.75rem;
}

.section-head__index {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 0.375rem;
}

.section-head__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-style: italic;
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  line-height: 1.05;
  color: var(--paper);
  margin: 0;
}

.readable {
  max-width: 68ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--slate);
}

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

.readable h2,
.readable h3,
.readable h4 {
  color: var(--paper);
  font-family: var(--font-display);
  line-height: 1.2;
}

.readable h2 {
  font-size: 1.5rem;
  margin-top: 2em;
}

.readable strong {
  color: var(--paper);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  padding: 0.75rem 1.25rem;
  background: var(--neon);
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-style: italic;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  line-height: 1;
  border: 0;
  cursor: pointer;
  clip-path: polygon(14px 0, 100% 0, calc(100% - 14px) 100%, 0 100%);
  transition: filter 0.15s ease, transform 0.15s ease;
}

.btn:hover {
  filter: brightness(1.08);
  transform: translateY(-2px);
}

.btn--primary {
  background: var(--neon);
  color: var(--ink);
}

.btn--ghost {
  background: rgba(0, 229, 223, 0.06);
  color: var(--cyan);
  box-shadow: inset 0 0 0 1px var(--cyan);
}

.btn--ghost:hover {
  background: rgba(0, 229, 223, 0.12);
  color: var(--cyan);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.375rem;
  padding: 0;
  margin: 0 0 1.5rem;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--slate);
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--line);
}

.breadcrumb a {
  color: var(--cyan);
  text-decoration: none;
}

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

.grid {
  display: grid;
  gap: clamp(16px, 2.5vw, 32px);
}

.grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid--stats {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: clamp(20px, 3vw, 32px);
  clip-path: polygon(18px 0, 100% 0, calc(100% - 18px) 100%, 0 100%);
}

.cut-corner {
  clip-path: polygon(20px 0, 100% 0, calc(100% - 20px) 100%, 0 100%);
}

.tag {
  display: inline-block;
  padding: 0.3125rem 0.625rem;
  background: rgba(0, 229, 223, 0.08);
  border-left: 2px solid var(--cyan);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1.2;
}

.tag--warning {
  border-left-color: var(--orange);
  color: var(--orange);
  background: rgba(255, 92, 0, 0.08);
}

.tag--hot {
  border-left-color: var(--yellow);
  color: var(--yellow);
  background: rgba(255, 210, 0, 0.06);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--paper);
}

.data-table th,
.data-table td {
  padding: 0.625rem 0.75rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.data-table thead th {
  color: var(--cyan);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-bottom: 1px solid var(--neon);
}

.data-table tbody tr:hover {
  background: rgba(184, 255, 0, 0.06);
}

.media {
  position: relative;
  display: block;
  overflow: hidden;
  background: #0d1626;
}

.media--fixed {
  aspect-ratio: 16 / 9;
}

.media--landscape {
  aspect-ratio: 21 / 9;
}

.media--portrait {
  aspect-ratio: 4 / 5;
}

.media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

.media__placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--slate);
  letter-spacing: 0.1em;
  background: linear-gradient(135deg, rgba(0, 229, 223, 0.08) 0%, rgba(0, 0, 0, 0) 40%), var(--panel);
}

.scroll-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  background: rgba(11, 18, 32, 0.9);
  color: var(--neon);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
}

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

.scroll-top:hover {
  border-color: var(--neon);
  background: var(--panel);
}

.scroll-top__arrow {
  font-size: 1rem;
  line-height: 1;
}

.scroll-top__label {
  font-family: var(--font-mono);
}

[data-spy-target].spy-is-active {
  color: var(--neon);
  border-left-color: var(--neon);
}

@media (min-width: 1081px) {
  body {
    margin-left: var(--header-w);
  }
}

@media (max-width: 1080px) {
  body {
    margin-left: 0;
    padding-top: 64px;
  }

  .site-header {
    width: 100%;
    height: 64px;
    border-right: none;
    border-bottom: 1px solid var(--line);
    background: var(--panel);
  }

  .site-header__rail {
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    height: 64px;
    padding: 0 16px;
  }

  .site-header__rail::after {
    top: auto;
    right: auto;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--neon) 0%, var(--cyan) 45%, var(--orange) 90%);
  }

  .site-header .site-brand {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 0;
  }

  .site-header .site-brand__official {
    display: none;
  }

  .site-nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
    padding: 8px 12px;
    background: transparent;
    border: 1px solid var(--line);
    color: var(--paper);
    font-family: var(--font-body);
    font-size: 0.75rem;
    cursor: pointer;
  }

  .site-nav {
    position: fixed;
    top: 64px;
    left: 0;
    z-index: 99;
    width: min(340px, 88vw);
    height: calc(100vh - 64px);
    padding: 24px 20px;
    background: var(--panel);
    border-right: 1px solid var(--line);
    box-shadow: 16px 0 48px rgba(0, 0, 0, 0.35);
    visibility: hidden;
    transform: translateX(-100%);
    transition: transform 0.24s ease, visibility 0.24s;
  }

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

  .site-nav__list {
    gap: 2px;
  }

  .site-nav__link {
    flex-direction: row;
    align-items: center;
    gap: 12px;
    padding: 12px 10px;
    border-left: 3px solid transparent;
  }

  .site-nav__status {
    margin-top: auto;
  }
}

@media (max-width: 1080px) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 900px) {
  .grid--2,
  .grid--3 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

@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;
  }
}