:root {
  --color-space: #0A1E3C;
  --color-accent: #39FF14;
  --color-ink: #101010;
  --color-paper: #F5F7FA;
  --color-steel: #1E3A5F;
  --color-cloud: #8A99A8;
  --color-ember: #FF6B35;
  --color-cyan: #00E5FF;
  --color-muted-ink: #55657A;
  --font-head: "Arial Black", "DIN Alternate", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "Roboto Mono", "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --shell-width: 1360px;
  --page-gutter: clamp(18px, 4vw, 56px);
  --shadow-hard: 8px 8px 0 rgba(0, 0, 0, 0.28);
  --header-scroll-offset: 120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0;
  background-color: var(--color-space);
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 255, 20, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  color: var(--color-paper);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 0.5em;
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1.15;
}

h1 {
  font-size: clamp(1.8rem, 4vw, 3rem);
}

h2 {
  font-size: clamp(1.35rem, 2.6vw, 2rem);
}

h3 {
  font-size: 1.15rem;
}

p {
  margin: 0 0 1em;
}

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

a {
  color: var(--color-cyan);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

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

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

button {
  font: inherit;
  cursor: pointer;
}

:focus-visible {
  outline: 4px solid var(--color-cyan);
  outline-offset: 4px;
}

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

[hidden] {
  display: none !important;
}

#main-content {
  scroll-margin-top: var(--header-scroll-offset);
}

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 8px;
  z-index: 3000;
  padding: 0.6em 1em;
  background: var(--color-accent);
  border: 2px solid var(--color-ink);
  color: var(--color-ink);
  font-weight: 700;
  text-decoration: none;
}

.skip-link:focus {
  left: 8px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-space);
  border-bottom: 3px solid var(--color-accent);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.header-shell {
  width: 100%;
  max-width: var(--shell-width);
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

.header-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 14px 0 12px;
  border-bottom: 1px solid rgba(138, 153, 168, 0.3);
}

.header-brand {
  display: flex;
  flex: 1;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
}

.brand-word {
  display: inline-block;
  padding: 0.08em 0.22em 0.1em;
  background: var(--color-accent);
  color: var(--color-ink);
  font-family: var(--font-head);
  font-size: 2rem;
  font-weight: 900;
  line-height: 1;
  transform: skewX(-6deg);
}

.brand-tag {
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  line-height: 1.2;
  padding: 0.25em 0.5em;
}

.brand-mark:hover .brand-tag {
  background: var(--color-accent);
  color: var(--color-ink);
}

.header-statement {
  max-width: 44ch;
  margin: 0;
  padding-left: 0.8rem;
  border-left: 3px solid var(--color-cyan);
  color: var(--color-cloud);
  font-size: 0.85rem;
  letter-spacing: 0.03em;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.7rem;
  border: 2px solid var(--color-accent);
  background: transparent;
  color: var(--color-accent);
  font-family: var(--font-body);
  font-weight: 700;
}

.nav-toggle:hover {
  background: var(--color-accent);
  color: var(--color-ink);
}

.nav-toggle-bars {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}

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

.nav-toggle-text {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

.site-nav {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
}

.nav-list li {
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.nav-list li:first-child {
  border-left: 0;
}

.nav-list a {
  position: relative;
  display: block;
  padding: 14px 22px;
  color: var(--color-paper);
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-decoration: none;
}

.nav-list a::after {
  content: "";
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 8px;
  height: 3px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s ease;
}

.nav-list a:hover,
.nav-list a[aria-current="page"] {
  color: var(--color-accent);
}

.nav-list a:hover::after,
.nav-list a[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-list a[aria-current="page"] {
  background: rgba(57, 255, 20, 0.08);
}

.site-footer {
  position: relative;
  margin-top: auto;
  background: var(--color-ink);
  border-top: 6px solid var(--color-accent);
  color: var(--color-paper);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 6px;
  left: 0;
  z-index: 1;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-cyan), transparent 60%);
  pointer-events: none;
}

.footer-shell {
  width: 100%;
  max-width: var(--shell-width);
  margin-inline: auto;
  padding: clamp(40px, 6vw, 68px) var(--page-gutter) 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.5fr;
  gap: 2rem 1.5rem;
  align-items: start;
}

.footer-brand {
  padding-right: 1rem;
}

.footer-brand-word {
  margin: 0 0 0.2rem;
  color: var(--color-accent);
  font-family: var(--font-head);
  font-size: 2.4rem;
  line-height: 1;
}

.footer-brand-caption {
  margin: 0 0 1rem;
  color: var(--color-cloud);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
}

.footer-statement {
  max-width: 36em;
  margin: 0;
  color: var(--color-cloud);
  font-size: 0.9rem;
}

.footer-title {
  margin: 0 0 0.8rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid rgba(255, 255, 255, 0.15);
  color: var(--color-accent);
  font-family: var(--font-head);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.footer-links li + li {
  margin-top: 0.35rem;
}

.footer-links a {
  border-bottom: 1px solid transparent;
  color: var(--color-paper);
  font-size: 0.9rem;
  text-decoration: none;
}

.footer-links a:hover {
  border-bottom-color: var(--color-cyan);
  color: var(--color-cyan);
}

.footer-contact {
  display: grid;
  gap: 0.55rem;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
}

.contact-label {
  min-width: 3.4em;
  padding-top: 0.2em;
  color: var(--color-cloud);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.contact-value {
  color: var(--color-paper);
  font-size: 0.85rem;
  overflow-wrap: anywhere;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
  margin-top: clamp(2rem, 5vw, 3.5rem);
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.footer-copyright,
.footer-icp,
.footer-note {
  margin: 0;
  color: var(--color-cloud);
  font-size: 0.78rem;
}

.footer-note {
  flex-basis: 100%;
  padding: 0.5em 0.8em;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.03);
  text-align: center;
}

.container {
  width: 100%;
  max-width: var(--shell-width);
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

.section {
  padding-block: clamp(3rem, 7vw, 6rem);
}

.section-tight {
  padding-block: clamp(2rem, 4vw, 3rem);
}

.content-narrow {
  max-width: 76ch;
  margin-inline: auto;
}

.content-prose {
  max-width: 70ch;
}

.section-paper {
  background: var(--color-paper);
  color: var(--color-ink);
}

.section-paper h1,
.section-paper h2,
.section-paper h3,
.section-paper h4 {
  color: var(--color-space);
}

.section-paper .lead {
  color: var(--color-muted-ink);
}

.section-space {
  background: var(--color-space);
  color: var(--color-paper);
}

.section-ink {
  background: var(--color-ink);
  color: var(--color-paper);
}

.section-steel {
  background: var(--color-steel);
  color: var(--color-paper);
}

.display-title {
  margin: 0 0 0.35em;
  font-family: var(--font-head);
  font-size: clamp(2.2rem, 6vw, 4.6rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
}

.lead {
  max-width: 62ch;
  color: var(--color-cloud);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.kicker {
  display: inline-block;
  margin-bottom: 0.9rem;
  padding: 0.2em 0.55em;
  border: 1px solid currentColor;
  color: var(--color-cyan);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.tag {
  display: inline-block;
  padding: 0.2em 0.55em;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.rule {
  height: 4px;
  margin: 2rem 0;
  border: 0;
  background: linear-gradient(90deg, var(--color-accent), var(--color-cyan));
}

.highlight {
  color: var(--color-accent);
  font-weight: 700;
}

.highlight-ember {
  color: var(--color-ember);
  font-weight: 700;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5em;
  margin: 0 0 1rem;
  color: var(--color-cloud);
  font-size: 0.85rem;
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 0.5em;
  color: var(--color-cloud);
}

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

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

.breadcrumb [aria-current="page"] {
  color: var(--color-accent);
}

.section-paper .breadcrumb a {
  color: var(--color-space);
}

.btn,
.btn-solid,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  min-height: 44px;
  padding: 0.6em 1.1em;
  border: 2px solid var(--color-accent);
  background: transparent;
  color: var(--color-accent);
  font-family: var(--font-body);
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.btn:hover,
.btn-solid:hover,
.btn-ghost:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-ink);
}

.btn:active,
.btn-solid:active,
.btn-ghost:active {
  transform: translateY(2px);
}

.btn-solid {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-ink);
}

.btn-solid:hover {
  background: var(--color-cyan);
  border-color: var(--color-cyan);
  color: var(--color-ink);
}

.btn-ghost {
  border-color: var(--color-cloud);
  color: var(--color-cloud);
}

.btn-ghost:hover {
  background: var(--color-cloud);
  border-color: var(--color-cloud);
  color: var(--color-ink);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.filter-btn {
  appearance: none;
  -webkit-appearance: none;
  padding: 0.45em 0.95em;
  border: 2px solid var(--color-cloud);
  background: transparent;
  color: var(--color-cloud);
  font-family: var(--font-body);
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

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

.filter-btn.is-active,
.filter-btn[aria-pressed="true"] {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-ink);
}

.hover-tilt {
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.hover-tilt:hover {
  transform: translateY(-4px) rotate(-0.5deg);
  box-shadow: 12px 12px 0 rgba(0, 0, 0, 0.25);
}

.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: clamp(1.2rem, 3vw, 2rem);
}

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

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

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  position: relative;
  padding: clamp(1.2rem, 3vw, 2rem);
  border: 2px solid var(--color-space);
  background: var(--color-paper);
  box-shadow: var(--shadow-hard);
  color: var(--color-ink);
}

.card h1,
.card h2,
.card h3,
.card h4 {
  color: var(--color-space);
}

.card-dark {
  position: relative;
  padding: clamp(1.2rem, 3vw, 2rem);
  border: 2px solid var(--color-accent);
  background: var(--color-steel);
  box-shadow: 8px 8px 0 rgba(57, 255, 20, 0.18);
  color: var(--color-paper);
}

.card-dark h1,
.card-dark h2,
.card-dark h3,
.card-dark h4 {
  color: var(--color-accent);
}

.data-card {
  position: relative;
  padding: 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-top: 5px solid var(--color-ember);
  background: var(--color-ink);
  color: var(--color-paper);
}

.data-number {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1;
}

.data-label {
  display: block;
  margin-top: 0.4rem;
  color: var(--color-cloud);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.data-key {
  color: var(--color-ember);
  font-family: var(--font-mono);
  font-weight: 700;
}

.numeric {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.slant-card {
  position: relative;
  padding: 1.2rem 1.4rem;
  border: 2px solid var(--color-accent);
  background: var(--color-steel);
  box-shadow: 10px 10px 0 rgba(0, 0, 0, 0.3);
  color: var(--color-paper);
  transform: skewX(-5deg);
}

.slant-card > * {
  transform: skewX(5deg);
}

.slant-card h1,
.slant-card h2,
.slant-card h3,
.slant-card h4 {
  color: var(--color-accent);
}

.media-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: 2px solid var(--color-space);
  background: var(--color-steel);
  box-shadow: var(--shadow-hard);
}

.media-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(57, 255, 20, 0.2));
  pointer-events: none;
}

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

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

.table-wrap {
  overflow-x: auto;
  border: 2px solid var(--color-space);
  background: var(--color-paper);
  box-shadow: var(--shadow-hard);
  color: var(--color-ink);
}

.table-wrap table {
  width: 100%;
  min-width: 700px;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.table-wrap th,
.table-wrap td {
  padding: 0.7rem 1rem;
  border-bottom: 1px solid rgba(16, 16, 16, 0.14);
  text-align: left;
}

.table-wrap th {
  background: var(--color-space);
  color: var(--color-paper);
  font-family: var(--font-head);
  letter-spacing: 0.04em;
}

.table-wrap tr:last-child td {
  border-bottom: 0;
}

.sweep-line {
  position: relative;
  display: block;
  height: 4px;
  overflow: hidden;
  background: rgba(57, 255, 20, 0.18);
}

.sweep-line::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: -25%;
  width: 25%;
  background: linear-gradient(90deg, transparent, var(--color-cyan), transparent);
  animation: data-sweep 2.8s ease-in-out infinite;
}

@keyframes data-sweep {
  0% {
    left: -25%;
  }

  60%,
  100% {
    left: 100%;
  }
}

@media (max-width: 960px) {
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-brand {
    grid-column: span 2;
    padding-right: 0;
  }
}

@media (max-width: 900px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  :root {
    --header-scroll-offset: 30px;
  }

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

  .header-brand {
    flex: 1;
  }

  .header-statement {
    order: 3;
    flex-basis: 100%;
    max-width: none;
    margin-top: 0.2rem;
  }

  .site-nav {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    border-bottom: 2px solid transparent;
    transition: max-height 0.35s ease, opacity 0.25s ease, border-color 0.25s ease, visibility 0s 0.35s;
  }

  .site-nav[data-open] {
    max-height: 600px;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    border-bottom-color: var(--color-accent);
    transition: max-height 0.35s ease, opacity 0.25s ease, border-color 0.25s ease, visibility 0s 0s;
  }

  .nav-list {
    flex-direction: column;
  }

  .nav-list li {
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
  }

  .nav-list li:first-child {
    border-top: 0;
  }

  .nav-list a {
    padding: 15px 8px;
  }

  .nav-list a::after {
    right: auto;
    left: 8px;
    width: 32px;
  }
}

@media (max-width: 560px) {
  .brand-word {
    font-size: 1.5rem;
  }

  .brand-tag {
    display: none;
  }

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

  .footer-brand {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

@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: 0s !important;
  }
}