:root {
  --c-space: #0A1F33;
  --c-panel: #132C45;
  --c-grid: #2E4A66;
  --c-neon: #00E676;
  --c-ember: #FF6E40;
  --c-violet: #B388FF;
  --c-moon: #F0F7FF;
  --c-mist: #A8C0D0;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "Roboto Mono", "JetBrains Mono", "SF Mono", Consolas, "Courier New", monospace;
  --sidebar-w: 280px;
  --container-w: 1180px;
  --space-sm: 0.5rem;
  --space: 1rem;
  --space-lg: 2rem;
  --space-xl: 4rem;
}

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

html {
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-moon);
  background-color: var(--c-space);
  background-image:
    linear-gradient(rgba(46, 74, 102, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46, 74, 102, 0.18) 1px, transparent 1px);
  background-size: 32px 32px;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  line-height: 1.25;
  letter-spacing: 0.02em;
  font-weight: 800;
}

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

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

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

:focus-visible {
  outline: 2px solid var(--c-neon);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 5000;
  background: var(--c-neon);
  color: #062D1C;
  padding: 10px 20px;
  border-radius: 4px;
  font-weight: 700;
  text-decoration: none;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 16px;
  color: #062D1C;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  background:
    linear-gradient(135deg, transparent 0%, rgba(179, 136, 255, 0.06) 40%, transparent 80%),
    var(--c-space);
  border-right: 1px solid var(--c-grid);
  overflow-y: auto;
}

.site-header::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--c-neon) 0%, var(--c-violet) 60%, var(--c-ember) 100%);
  pointer-events: none;
}

.header-inner {
  display: flex;
  flex-direction: column;
}

.brand-lockup {
  display: block;
  padding: 32px 28px 24px;
  text-decoration: none;
  position: relative;
}

.brand-name {
  display: inline-block;
  font-size: 1.75rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  color: var(--c-moon);
  transform: skew(-6deg);
}

.brand-name::after {
  content: '●';
  display: inline-block;
  font-size: 0.45em;
  vertical-align: text-top;
  margin-left: 6px;
  color: var(--c-neon);
  transform: skew(6deg);
}

.brand-code {
  display: block;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--c-neon);
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.brand-lockup::after {
  content: '';
  display: block;
  width: 56%;
  height: 2px;
  margin-top: 16px;
  background: linear-gradient(90deg, var(--c-neon), var(--c-violet));
  clip-path: polygon(0 0, 100% 0, calc(100% - 12px) 100%, 0 100%);
}

.mobile-toggle {
  display: none;
}

.nav-track {
  flex: 1;
  padding: 32px 16px 16px;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-node {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 3px;
  color: var(--c-mist);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.nav-index {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--c-grid);
  transition: color 0.2s;
}

.nav-node:hover {
  color: var(--c-moon);
  background: rgba(255, 255, 255, 0.04);
  border-left-color: var(--c-neon);
}

.nav-node:hover .nav-index {
  color: var(--c-neon);
}

.nav-node[aria-current="page"] {
  color: var(--c-moon);
  background: linear-gradient(90deg, rgba(0, 230, 118, 0.14) 0%, rgba(0, 230, 118, 0.02) 100%);
  border-left-color: var(--c-neon);
}

.nav-node[aria-current="page"] .nav-index {
  color: var(--c-neon);
  font-weight: 700;
}

.header-status {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 24px;
  border-top: 1px solid var(--c-grid);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--c-mist);
  flex-shrink: 0;
}

.status-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-neon);
  animation: pulse 2s ease-in-out infinite;
  flex-shrink: 0;
}

.status-text {
  letter-spacing: 0.08em;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    box-shadow: 0 0 0 0 rgba(0, 230, 118, 0.5);
  }
  50% {
    opacity: 0.6;
    box-shadow: 0 0 0 6px rgba(0, 230, 118, 0);
  }
}

.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--c-neon), var(--c-violet));
  pointer-events: none;
}

.main-content {
  margin-left: var(--sidebar-w);
}

.content-shell {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: calc(var(--space-xl) + 20px) var(--space-xl) var(--space-xl);
}

.section-block {
  margin-bottom: var(--space-xl);
}

.grid-framework {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.slot-large {
  grid-column: span 8;
}

.slot-side {
  grid-column: span 4;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-mist);
  margin-bottom: var(--space-lg);
}

.breadcrumb a {
  color: var(--c-mist);
  text-decoration: none;
  transition: color 0.2s;
}

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

.breadcrumb .sep {
  color: var(--c-grid);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.btn-primary {
  background: var(--c-neon);
  color: #062D1C;
  border-color: var(--c-neon);
  box-shadow: 0 4px 18px rgba(0, 230, 118, 0.18);
}

.btn-primary:hover {
  background: transparent;
  color: var(--c-neon);
  box-shadow: 0 4px 26px rgba(0, 230, 118, 0.25);
}

.btn-ghost {
  background: transparent;
  color: var(--c-moon);
  border-color: var(--c-grid);
}

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

.data-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 60px;
  padding: 4px 10px;
  border: 1px solid rgba(0, 230, 118, 0.3);
  border-radius: 4px;
  background: rgba(0, 230, 118, 0.08);
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--c-neon);
}

.shelf {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 240px;
  width: 100%;
  background: linear-gradient(135deg, var(--c-panel), #091827);
  border: 1px solid var(--c-grid);
  color: var(--c-mist);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  overflow: hidden;
}

.shelf::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, transparent 0%, rgba(179, 136, 255, 0.07) 45%, rgba(0, 230, 118, 0.05) 65%, transparent 100%);
}

.diag-panel {
  position: relative;
  padding: 36px;
  background: linear-gradient(135deg, var(--c-panel), var(--c-space));
  border: 1px solid var(--c-grid);
}

.diag-panel::before {
  content: '';
  position: absolute;
  top: -1px;
  right: -1px;
  width: 36px;
  height: 36px;
  border-top: 2px solid var(--c-neon);
  border-right: 2px solid var(--c-neon);
}

.diag-panel::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: -1px;
  width: 36px;
  height: 36px;
  border-bottom: 2px solid var(--c-violet);
  border-left: 2px solid var(--c-violet);
}

.site-footer {
  margin-left: var(--sidebar-w);
  background: #06121F;
  border-top: 1px solid var(--c-grid);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  width: 180px;
  height: 2px;
  background: linear-gradient(90deg, var(--c-neon), var(--c-violet), transparent);
}

.footer-frame {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 64px 40px 40px;
}

.footer-topline {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  align-items: flex-start;
  margin-bottom: 48px;
}

.site-footer .brand-lockup {
  padding: 0;
}

.site-footer .brand-lockup::after {
  margin-top: 12px;
  width: 44%;
}

.footer-faith {
  max-width: 520px;
  color: var(--c-mist);
  font-size: 0.9rem;
}

.footer-columns {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 48px;
  border-top: 1px solid var(--c-grid);
  padding-top: 32px;
}

.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-link {
  color: var(--c-moon);
  text-decoration: none;
  font-size: 0.875rem;
  padding: 4px 0;
  transition: color 0.2s;
}

.footer-link:hover {
  color: var(--c-neon);
}

.footer-contact {
  color: var(--c-mist);
  font-size: 0.85rem;
  display: grid;
  gap: 6px;
}

.footer-line {
  margin: 0;
}

.contact-label {
  color: var(--c-grid);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  margin-right: 8px;
  letter-spacing: 0.15em;
}

.footer-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid rgba(46, 74, 102, 0.5);
  padding-top: 20px;
  margin-top: 48px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-mist);
}

.icp-code {
  letter-spacing: 0.08em;
}

@media (max-width: 900px) {
  .main-content {
    margin-left: 0;
  }

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

  .site-header {
    position: relative;
    top: auto;
    left: auto;
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--c-grid);
    overflow: visible;
  }

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

  .header-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    border-bottom: 1px solid rgba(46, 74, 102, 0.4);
  }

  .brand-lockup {
    padding: 0;
  }

  .brand-lockup::after {
    display: none;
  }

  .brand-name {
    font-size: 1.35rem;
    transform: none;
  }

  .brand-name::after {
    font-size: 0.4em;
  }

  .brand-code {
    font-size: 0.6rem;
  }

  .mobile-toggle {
    display: flex;
    flex-direction: column;
    gap: 3px;
    padding: 10px 12px;
    background: none;
    border: 1px solid var(--c-grid);
    border-radius: 4px;
    cursor: pointer;
    align-items: center;
  }

  .mobile-toggle:hover {
    border-color: var(--c-neon);
  }

  .toggle-bar {
    width: 22px;
    height: 2px;
    background: var(--c-neon);
    display: block;
  }

  .toggle-label {
    font-family: var(--font-mono);
    font-size: 0.55rem;
    color: var(--c-mist);
    margin-top: 2px;
    letter-spacing: 0.1em;
  }

  .nav-track {
    display: block;
    width: 100%;
    padding: 0;
  }

  html.js .nav-track {
    display: none;
  }

  html.js .nav-track[data-open] {
    display: block;
  }

  .nav-list {
    gap: 0;
    padding: 4px 0;
  }

  .nav-node {
    padding: 12px 20px;
    border-radius: 0;
    border-left: 3px solid transparent;
  }

  .header-status {
    display: none;
  }

  .content-shell {
    padding: 48px 20px;
  }

  .section-block {
    margin-bottom: 40px;
  }

  .footer-frame {
    padding: 48px 20px 32px;
  }

  .footer-topline {
    flex-direction: column;
    margin-bottom: 32px;
  }

  .footer-columns {
    flex-direction: column;
    gap: 24px;
  }

  .footer-meta {
    flex-direction: column;
    gap: 8px;
    margin-top: 32px;
  }

  .footer-links {
    gap: 16px;
  }
}

@media (max-width: 600px) {
  .content-shell {
    padding: 32px 16px;
  }

  .diag-panel {
    padding: 28px;
  }

  .shelf {
    min-height: 180px;
  }

  .grid-framework {
    gap: 16px;
  }

  .footer-frame {
    padding: 40px 16px 28px;
  }
}

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

  .status-pulse {
    animation: none;
  }

  .scroll-progress {
    transition: none;
  }
}