:root {
  --bg-deep: #0A1F3C;
  --bg-dark: #08172E;
  --panel: #102A4A;
  --line: #1E3A5F;
  --accent: #00FF87;
  --accent-2: #FF6A00;
  --text: #E5EDF5;
  --muted: #8FA8C0;
  --font-display: Impact, 'Arial Black', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: Inter, 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --container: 76rem;
  --gutter: clamp(1rem, 3vw, 2.5rem);
  --radius: 4px;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3.5rem;
  --space-2xl: 5rem;
  --header-h: 4.5rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(circle at 82% -10%, rgba(0, 255, 135, 0.08), transparent 32rem),
    radial-gradient(circle at 10% 110%, rgba(255, 106, 0, 0.06), transparent 28rem),
    var(--bg-deep);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

body, h1, h2, h3, p, ul, ol, address {
  margin: 0;
}

ul, ol {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

input {
  font: inherit;
}

address {
  font-style: normal;
}

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

main {
  flex: 1;
  display: block;
}

#main-content {
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

main:focus {
  outline: none;
}

[hidden] {
  display: none !important;
}

:where(a, button, input, [tabindex]):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

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

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

.section {
  padding-block: var(--space-xl);
  border-bottom: 1px solid rgba(30, 58, 95, 0.7);
  position: relative;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.section-kicker::before {
  content: "";
  width: 2.5rem;
  height: 2px;
  background: var(--accent);
  flex-shrink: 0;
}

.section-title {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 800;
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  line-height: 1;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 1.25rem;
}

.page-hero {
  padding: clamp(4rem, 9vw, 7rem) 0 clamp(2.5rem, 6vw, 4rem);
  border-bottom: 1px solid var(--line);
  position: relative;
}

.page-hero .section-kicker {
  color: var(--accent-2);
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 800;
  line-height: 1.08;
  color: var(--text);
}

h1 {
  font-size: clamp(2.75rem, 6vw, 4.5rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 2.75rem);
}

h3 {
  font-size: 1.5rem;
}

p {
  max-width: 70ch;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 31, 60, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  flex-shrink: 0;
}

.site-header::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent) 0%, rgba(0, 255, 135, 0) 25%, var(--accent-2) 58%, rgba(255, 106, 0, 0) 100%);
  opacity: 0.6;
  pointer-events: none;
  z-index: 2;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--accent);
  color: var(--bg-dark);
  padding: 0.75rem 1.25rem;
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--radius);
  z-index: 2000;
  transition: top 0.18s ease;
}

.skip-link:focus {
  top: 1rem;
}

.scroll-progress {
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 12px rgba(0, 255, 135, 0.4);
  pointer-events: none;
  z-index: 3;
  transition: width 0.1s linear;
}

.header-inner {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  position: relative;
  z-index: 1;
}

.site-brand {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  flex-shrink: 0;
}

.brand-mark {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 2rem;
  line-height: 1;
  color: var(--text);
  letter-spacing: 0.01em;
  text-shadow: 0 0 18px rgba(0, 255, 135, 0.25);
}

.brand-mark::after {
  content: "01";
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  font-style: normal;
  font-size: 0.62em;
  color: var(--accent);
  margin-left: 0.18em;
  vertical-align: super;
}

.brand-name {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.site-brand:hover .brand-name,
.site-brand:focus-visible .brand-name {
  color: var(--accent);
}

.header-search {
  margin-left: auto;
  min-width: 12rem;
  max-width: 17rem;
}

.search-field {
  width: 100%;
  background: rgba(8, 23, 46, 0.75);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 0.6rem 0.9rem;
  font-size: 0.9rem;
  border-radius: var(--radius);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.search-field::placeholder {
  color: rgba(143, 168, 192, 0.8);
}

.search-field:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 255, 135, 0.12);
}

.site-nav {
  display: block;
  margin-left: var(--space-md);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 1.6vw, 1.5rem);
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 0.5rem 0.1rem;
  font-weight: 500;
  font-size: 0.98rem;
  letter-spacing: 0.04em;
  color: var(--text);
  white-space: nowrap;
  transition: color 0.18s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.18s ease;
}

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

.nav-link:hover::after,
.nav-link:focus-visible::after,
.nav-link[aria-current="page"]::after {
  width: 100%;
}

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

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  font-weight: 600;
  transition: border-color 0.18s ease, color 0.18s ease;
}

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

.nav-toggle[aria-expanded="true"] {
  border-color: var(--accent);
  color: var(--accent);
}

.nav-toggle-box {
  position: relative;
  width: 1.25rem;
  height: 0.875rem;
}

.nav-toggle-inner,
.nav-toggle-box::before,
.nav-toggle-box::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform 0.2s ease, top 0.2s ease, opacity 0.2s ease;
}

.nav-toggle-inner {
  top: 50%;
  transform: translateY(-50%);
}

.nav-toggle-box::before {
  top: 0;
}

.nav-toggle-box::after {
  bottom: 0;
}

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

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

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

.nav-toggle-label {
  font-size: 0.9rem;
  letter-spacing: 0.08em;
}

.site-footer {
  position: relative;
  background: linear-gradient(180deg, var(--bg-dark), #050D1C);
  border-top: 1px solid var(--line);
  flex-shrink: 0;
}

.footer-signal {
  height: 4px;
  background: linear-gradient(90deg, var(--accent), transparent 38%, var(--accent-2));
  clip-path: polygon(0 0, 100% 0, calc(100% - 2rem) 100%, 0 100%);
  opacity: 0.75;
}

.footer-container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  padding-block: var(--space-xl) var(--space-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: var(--space-lg);
}

.footer-brand {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.footer-brand .brand-mark {
  font-size: 1.75rem;
}

.footer-statement {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
  max-width: 34rem;
}

.footer-title {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.125rem;
  letter-spacing: 0.05em;
  color: var(--text);
  border-left: 2px solid var(--accent);
  padding-left: 0.6rem;
  margin-bottom: 1rem;
}

.footer-list {
  display: grid;
  gap: 0.5rem;
}

.footer-link {
  color: var(--muted);
  font-size: 0.95rem;
  transition: color 0.18s ease, letter-spacing 0.18s ease;
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--accent);
  letter-spacing: 0.03em;
}

.footer-address,
.footer-email,
.footer-phone {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.8;
}

.footer-meta {
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.5rem;
  color: var(--muted);
  font-size: 0.875rem;
}

.footer-copyright {
  display: inline-flex;
  gap: 0.35rem;
}

.footer-legal {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-legal .footer-link {
  font-size: 0.875rem;
}

.meta-divider {
  color: var(--line);
}

.footer-icp {
  margin-left: auto;
}

.footer-note {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.8125rem;
  line-height: 1.6;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.4rem;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color 0.18s ease, background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

.btn:hover,
.btn:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 20px rgba(0, 255, 135, 0.14);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg-dark);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: transparent;
  color: var(--accent);
  box-shadow: 0 0 20px rgba(0, 255, 135, 0.18);
}

.btn-orange {
  background: var(--accent-2);
  border-color: var(--accent-2);
  color: var(--bg-dark);
}

.btn-orange:hover,
.btn-orange:focus-visible {
  background: transparent;
  color: var(--accent-2);
  border-color: var(--accent-2);
  box-shadow: 0 0 20px rgba(255, 106, 0, 0.14);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.875rem;
  padding-block: 1rem;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: var(--line);
  margin-right: 0.5rem;
}

.breadcrumb-link {
  color: var(--muted);
}

.breadcrumb-link:hover,
.breadcrumb-link:focus-visible {
  color: var(--accent);
}

.prose {
  color: var(--muted);
  max-width: 68ch;
  line-height: 1.75;
}

.prose h2,
.prose h3,
.prose strong {
  color: var(--text);
}

.prose p + p {
  margin-top: 1rem;
}

.prose a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: rgba(0, 255, 135, 0.4);
  text-underline-offset: 4px;
}

.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr));
}

.card {
  background: linear-gradient(160deg, rgba(16, 42, 74, 0.85), rgba(8, 23, 46, 0.95));
  border: 1px solid var(--line);
  border-left: 2px solid var(--accent);
  border-radius: var(--radius);
  padding: var(--space-md);
}

.card--warn {
  border-left-color: var(--accent-2);
}

.card-title {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.card-meta {
  color: var(--muted);
  font-size: 0.875rem;
}

.data-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.data-cell {
  background: var(--panel);
  padding: 1rem;
}

.data-label {
  display: block;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.data-value {
  display: block;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--accent);
  margin-top: 0.4rem;
}

.data-value.is-alert {
  color: var(--accent-2);
}

.media-frame {
  position: relative;
  border: 1px solid var(--line);
  background: linear-gradient(145deg, var(--panel), var(--bg-dark));
  overflow: hidden;
}

.media-frame::before {
  content: "";
  display: block;
  padding-bottom: 56.25%;
}

.media-frame--wide::before {
  padding-bottom: 42%;
}

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

.media-placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
}

.timeline {
  position: relative;
  padding-left: 1.75rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0.25rem;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(var(--accent), var(--accent-2));
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-lg);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -1.6rem;
  top: 0.25rem;
  width: 0.75rem;
  height: 0.75rem;
  background: var(--bg-deep);
  border: 2px solid var(--accent);
  transform: rotate(45deg);
}

.timeline-marker {
  display: inline-block;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 0.35rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 2px;
}

.tag-accent {
  border-color: rgba(0, 255, 135, 0.4);
  color: var(--accent);
}

.tag-orange {
  border-color: rgba(255, 106, 0, 0.4);
  color: var(--accent-2);
}

.key-number,
.timestamp {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  font-weight: 700;
}

.key-number {
  font-size: 1.25em;
  color: var(--accent);
}

.timestamp {
  font-size: 0.875em;
  color: var(--accent-2);
  letter-spacing: 0.08em;
}

.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;
}

[data-reveal] {
  opacity: 1;
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(1.5rem);
  transition: opacity 0.6s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.js [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

@media (max-width: 1024px) {
  .header-search {
    min-width: 0;
    max-width: 10rem;
  }

  .nav-list {
    gap: 0.75rem;
  }

  .brand-mark {
    font-size: 1.75rem;
  }

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

@media (max-width: 860px) {
  .header-inner {
    flex-wrap: wrap;
    padding-block: 0.8rem;
  }

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

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

  .header-search {
    flex: 1 1 100%;
    min-width: 0;
    max-width: none;
    margin-left: 0;
    margin-top: 0.6rem;
  }

  .site-nav {
    display: none;
    flex-basis: 100%;
    margin-left: 0;
    margin-top: 0.6rem;
    border-top: 1px solid var(--line);
  }

  .site-nav[data-open] {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.4rem 0 0.8rem;
  }

  .nav-link {
    display: block;
    padding: 0.8rem 0;
    border-bottom: 1px solid rgba(30, 58, 95, 0.5);
    font-size: 1rem;
    white-space: normal;
  }

  .nav-link::after {
    bottom: 0.75rem;
  }
}

@media (max-width: 600px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 420px) {
  .brand-mark {
    font-size: 1.5rem;
  }

  .brand-name {
    font-size: 0.85rem;
    letter-spacing: 0.1em;
  }

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

  .search-field {
    font-size: 0.85rem;
    padding: 0.55rem 0.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .js [data-reveal],
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}