:root {
  --bg-primary: #0B1422;
  --bg-panel: #131C2E;
  --bg-content: #F2F5F9;
  --accent-green: #00E68A;
  --accent-orange: #FF7A00;
  --accent-purple: #7B61FF;
  --text-primary: #E6EDF5;
  --text-secondary: #A0B3C9;
  --text-invert: #0B1422;
  --divider: #2A3950;
  --font-title: system-ui, sans-serif, 'Noto Sans SC';
  --font-data: 'Roboto Mono', monospace;
  --font-body: system-ui, sans-serif, 'Inter';
  --title-size: clamp(2rem, 8vw, 6rem);
  --body-size: 1rem;
  --line-height-body: 1.75;
  --container-max: 1240px;
  --space-unit: 1.25rem;
  --radius: 0;
  --clip-angle: polygon(0 0, calc(100% - 2rem) 0, 100% 2rem, 100% 100%, 2rem 100%, 0 calc(100% - 2rem));
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--body-size);
  line-height: var(--line-height-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    linear-gradient(rgba(0, 230, 138, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 230, 138, 0.02) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-purple), var(--accent-orange));
  z-index: 1000;
  animation: signal-sweep 8s linear infinite;
  transform-origin: left;
}

@keyframes signal-sweep {
  0% { opacity: 0.6; transform: scaleX(0.3); }
  50% { opacity: 1; transform: scaleX(1); }
  100% { opacity: 0.6; transform: scaleX(0.3); }
}

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

a {
  color: var(--accent-green);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

a:hover {
  color: var(--text-primary);
}

ul, ol {
  list-style: none;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-unit);
  position: relative;
  z-index: 1;
}

.site-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent-green);
  color: var(--text-invert);
  padding: 0.75rem 1.5rem;
  z-index: 2000;
  font-weight: 600;
  clip-path: var(--clip-angle);
}

.site-skip:focus-visible {
  left: 0;
}

.site-header {
  position: relative;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--divider);
  padding-top: 2rem;
  padding-bottom: 0;
}

.site-header__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  grid-template-areas:
    "masthead actions toggle"
    "nav nav nav";
  align-items: center;
  gap: 1rem;
  padding-top: 0.5rem;
  padding-bottom: 0;
}

.masthead {
  grid-area: masthead;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  justify-self: start;
}

.masthead__brand {
  font-family: var(--font-title);
  font-size: var(--title-size);
  font-weight: 300;
  color: var(--text-primary);
  letter-spacing: 0.08em;
  line-height: 0.95;
  text-shadow: 0 0 30px rgba(0, 230, 138, 0.15);
  position: relative;
  transition: color 0.3s ease;
}

.masthead__brand::after {
  content: '◢';
  position: absolute;
  right: -1.6rem;
  top: 0;
  color: var(--accent-green);
  font-size: 0.5em;
  animation: blink-data 2s infinite;
}

@keyframes blink-data {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.2; }
}

.masthead__brand:hover {
  color: var(--accent-green);
}

.masthead__slogan {
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.header-actions {
  grid-area: actions;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  position: relative;
}

.nav-toggle {
  grid-area: toggle;
  display: none;
  background: transparent;
  border: 1px solid var(--divider);
  color: var(--text-primary);
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  font-family: var(--font-data);
  font-size: 0.75rem;
  line-height: 1;
  clip-path: var(--clip-angle);
  align-items: center;
  gap: 0.4rem;
  transition: background 0.2s ease, border-color 0.2s ease;
}

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

.nav-toggle__line {
  display: block;
  width: 14px;
  height: 2px;
  background: var(--accent-green);
  transition: transform 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:first-child {
  transform: rotate(45deg) translate(2px, 2px);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:last-child {
  transform: rotate(-45deg) translate(1px, -1px);
}

.nav-toggle__label {
  font-size: 0.75rem;
}

.site-nav {
  grid-area: nav;
  width: 100%;
  border-top: 1px solid var(--divider);
  margin-top: 1rem;
}

.site-nav__list {
  display: flex;
  align-items: stretch;
  justify-content: center;
  flex-wrap: wrap;
}

.site-nav__item {
  position: relative;
}

.site-nav__link {
  display: block;
  padding: 0.9rem 1.4rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  letter-spacing: 0.05em;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.site-nav__link:hover {
  color: var(--accent-green);
  background: rgba(0, 230, 138, 0.05);
}

.site-nav__link[aria-current="page"] {
  color: var(--accent-green);
  border-bottom-color: var(--accent-green);
  background: linear-gradient(0deg, rgba(0, 230, 138, 0.08), transparent);
}

.site-nav__link[aria-current="page"]::after {
  content: '●';
  position: absolute;
  bottom: 0.25rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.5rem;
  color: var(--accent-green);
}

.search-trigger {
  background: transparent;
  border: 1px solid var(--divider);
  color: var(--text-secondary);
  font-family: var(--font-data);
  font-size: 0.75rem;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  clip-path: var(--clip-angle);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.search-trigger:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.search-panel {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  background: var(--bg-panel);
  border: 1px solid var(--accent-green);
  padding: 1rem;
  min-width: 260px;
  z-index: 100;
  clip-path: var(--clip-angle);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.search-panel[hidden] {
  display: none;
}

.search-panel__label {
  display: block;
  font-family: var(--font-data);
  font-size: 0.7rem;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.search-panel__input {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--divider);
  color: var(--text-primary);
  padding: 0.6rem 0.8rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s ease;
}

.search-panel__input:focus-visible {
  border-color: var(--accent-green);
}

.site-footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--divider);
  position: relative;
  margin-top: 5rem;
  padding-bottom: 2rem;
  z-index: 1;
}

.footer-signal {
  height: 3px;
  background: var(--bg-panel);
  position: relative;
  overflow: hidden;
}

.footer-signal__line {
  position: absolute;
  top: 0;
  left: -30%;
  width: 30%;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--accent-green), transparent);
  animation: signal-run 3s linear infinite;
}

@keyframes signal-run {
  0% { left: -30%; }
  100% { left: 130%; }
}

.footer-signal__dot {
  position: absolute;
  right: 2rem;
  top: -2px;
  width: 8px;
  height: 8px;
  background: var(--accent-orange);
  transform: rotate(45deg);
  animation: pulse-dot 2s ease infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr 1.2fr;
  gap: 2rem;
  padding: 3rem 0 2rem;
}

.footer-brand__name {
  font-family: var(--font-title);
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.footer-brand__note {
  font-size: 0.85rem;
  color: var(--text-secondary);
  max-width: 30ch;
  line-height: 1.6;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links__item {
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-bottom: 1px solid transparent;
  padding-bottom: 0.1rem;
  width: fit-content;
}

.footer-links__item:hover {
  color: var(--accent-green);
  border-bottom-color: var(--accent-green);
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.footer-contact__line {
  font-family: var(--font-data);
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.footer-sub {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  justify-content: center;
}

.footer-sub__text {
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--accent-green);
  letter-spacing: 0.05em;
  padding: 0.3rem 0.5rem;
  border-left: 2px solid var(--accent-green);
  background: rgba(0, 230, 138, 0.05);
}

.footer-legal {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--divider);
  padding-top: 1.25rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.footer-legal__text {
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.footer-legal__icp {
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--text-secondary);
  border: 1px solid var(--divider);
  padding: 0.25rem 0.6rem;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.footer-legal__icp:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.6rem;
  border: 1px solid var(--accent-green);
  font-family: var(--font-data);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  clip-path: var(--clip-angle);
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn--primary {
  background: var(--accent-green);
  color: var(--text-invert);
  border-color: var(--accent-green);
}

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

.btn--ghost {
  background: transparent;
  color: var(--accent-green);
  border-color: var(--divider);
}

.btn--ghost:hover {
  border-color: var(--accent-green);
  background: rgba(0, 230, 138, 0.06);
}

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

.section {
  position: relative;
  padding: 4rem 0;
}

.section--tight {
  padding: 2rem 0;
}

.img-frame {
  position: relative;
  overflow: hidden;
  background: var(--bg-panel);
  border: 1px solid var(--divider);
  clip-path: var(--clip-angle);
  aspect-ratio: 16 / 9;
}

.img-frame--tall {
  aspect-ratio: 3 / 4;
}

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

.img-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 230, 138, 0.08), transparent 40%, rgba(123, 97, 255, 0.05));
  pointer-events: none;
}

.anchor-tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--divider);
  padding-bottom: 0;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.anchor-tabs [role="tab"] {
  background: transparent;
  border: 1px solid transparent;
  border-bottom: none;
  padding: 0.6rem 1.2rem;
  font-family: var(--font-data);
  font-size: 0.85rem;
  color: var(--text-secondary);
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 0.5rem) 0, 100% 0.5rem, 100% 100%, 0 100%);
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.anchor-tabs [role="tab"]:hover {
  color: var(--accent-green);
}

.anchor-tabs [role="tab"][aria-selected="true"] {
  background: var(--bg-panel);
  border-color: var(--divider);
  color: var(--accent-green);
}

.data-card {
  background: var(--bg-panel);
  border: 1px solid var(--divider);
  padding: 1.5rem;
  position: relative;
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.data-card::before {
  content: attr(data-index);
  position: absolute;
  top: 0.6rem;
  right: 0.8rem;
  font-family: var(--font-data);
  font-size: 0.7rem;
  color: var(--accent-purple);
}

.data-card:hover {
  border-color: var(--accent-green);
  transform: translateY(-2px);
}

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

::selection {
  background: var(--accent-green);
  color: var(--text-invert);
}

@media (max-width: 960px) {
  .site-header__inner {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "masthead toggle"
      "nav nav"
      "actions actions";
  }

  .nav-toggle {
    display: inline-flex;
    justify-self: end;
  }

  .site-nav {
    display: none;
    border-top: 1px solid var(--divider);
    margin-top: 0;
  }

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

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

  .site-nav__link {
    padding: 0.9rem 1rem;
    border-left: 2px solid transparent;
    border-bottom: none;
    border-bottom: 1px solid var(--divider);
  }

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

  .header-actions {
    grid-area: actions;
    justify-content: flex-start;
    width: 100%;
  }

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

@media (max-width: 600px) {
  :root {
    --space-unit: 1rem;
  }

  .site-header__inner {
    grid-template-columns: 1fr auto;
    padding-top: 0.75rem;
  }

  .masthead__brand {
    font-size: clamp(2.2rem, 12vw, 3.5rem);
  }

  .masthead__slogan {
    font-size: 0.65rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding-top: 2rem;
  }

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

  .section {
    padding: 2.5rem 0;
  }

  .search-panel {
    position: fixed;
    top: auto;
    right: 0;
    left: 0;
    bottom: 0;
    min-width: 0;
    z-index: 2000;
    border-left: none;
    border-right: none;
    border-bottom: none;
  }
}

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

  html {
    scroll-behavior: auto;
  }
}