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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg-deep);
  color: var(--ink-bold);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
}

main {
  display: block;
}

#main-content {
  flex: 1;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.8em;
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.12;
  color: var(--ink-bold);
}

p {
  margin: 0 0 1em;
}

ul, ol {
  margin: 0 0 1em;
  padding-left: 1.2em;
}

a {
  color: var(--accent-green);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

button, input, select, textarea {
  font: inherit;
}

table {
  border-collapse: collapse;
}

:root {
  --bg-deep: #0A1128;
  --bg-space: #1A2A4A;
  --bg-panel: rgba(26, 42, 74, 0.72);
  --bg-surface: #F0F4F8;
  --ink-bold: #E6EDF3;
  --ink-soft: rgba(230, 237, 243, 0.72);
  --ink-dim: rgba(230, 237, 243, 0.52);
  --ink-deep: #0A1128;
  --accent-green: #00FF88;
  --accent-orange: #FF6B35;
  --line-light: rgba(255, 255, 255, 0.15);
  --line-green: rgba(0, 255, 136, 0.45);
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", SimSun, Georgia, serif;
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "Cascadia Code", Menlo, Consolas, monospace;
  --container: 1240px;
  --space-section: clamp(4.5rem, 10vw, 8rem);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

:focus-visible {
  outline: 3px solid var(--accent-orange);
  outline-offset: 2px;
}

code, .mono {
  font-family: var(--font-mono);
}

.lead {
  font-size: 1.15rem;
  color: var(--ink-soft);
  line-height: 1.75;
}

.site-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent-orange);
  color: var(--ink-deep);
  font-weight: 800;
  padding: 0.75rem 1.25rem;
  clip-path: polygon(0 0, 100% 0, 94% 100%, 0 100%);
}

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

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 320;
  width: 0;
  height: 3px;
  background: var(--accent-green);
  box-shadow: 0 0 12px var(--accent-green);
  pointer-events: none;
}

.site-header {
  position: relative;
  z-index: 210;
  background: linear-gradient(180deg, rgba(10, 17, 40, 0.96), rgba(10, 17, 40, 0.86) 62%, rgba(26, 42, 74, 0.78));
  border-bottom: 1px solid var(--line-light);
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-green) 0%, rgba(0, 255, 136, 0.2) 38%, transparent 62%, var(--accent-orange) 100%);
  opacity: 0.9;
  pointer-events: none;
}

.site-header::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: clamp(1rem, 8vw, 5rem);
  width: clamp(180px, 28vw, 420px);
  height: 2px;
  background: linear-gradient(90deg, var(--accent-orange), transparent);
  pointer-events: none;
}

.header-rail {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
  position: relative;
}

.header-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.6rem;
  border-bottom: 1px dashed var(--line-light);
}

.header-status {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--ink-dim);
  text-transform: uppercase;
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 10px var(--accent-green);
  animation: live-pulse 2.2s ease-in-out infinite;
}

@keyframes live-pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.55;
    transform: scale(0.8);
  }
}

.header-actions {
  display: flex;
  gap: 0.6rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.4rem;
  padding: 0.5rem 0.95rem;
  background: var(--accent-green);
  color: var(--ink-deep);
  border: 1px solid transparent;
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 180ms var(--ease), background-color 180ms, border-color 180ms, color 180ms, box-shadow 180ms;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 255, 136, 0.18);
}

.btn:active {
  transform: translateY(0);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.04);
  color: var(--ink-bold);
  border-color: var(--line-light);
}

.btn--ghost:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
  box-shadow: none;
}

.btn--orange {
  background: var(--accent-orange);
  color: var(--ink-deep);
}

.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 1.05rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  color: var(--ink-bold);
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  flex: none;
  width: 2.75rem;
  height: 2.75rem;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent-green), #78FFC9);
  color: var(--ink-deep);
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 800;
  clip-path: polygon(12% 0, 100% 0, 88% 100%, 0 100%);
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.03em;
}

.brand-extra {
  display: block;
  margin-top: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.24em;
  color: var(--ink-dim);
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  z-index: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-item {
  margin: 0;
}

.nav-link {
  position: relative;
  display: block;
  padding: 0.85rem 0.8rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-decoration: none;
  transition: color 180ms var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0.8rem;
  right: 0.8rem;
  bottom: 0.25rem;
  height: 2px;
  background: var(--accent-green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 240ms var(--ease);
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  color: var(--accent-green);
  text-decoration: none;
}

.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
  box-shadow: 0 0 10px var(--accent-green);
}

.nav-toggle {
  display: none;
}

.nav-toggle__label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: 125;
  background: rgba(5, 8, 20, 0.72);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 280ms var(--ease), visibility 280ms;
}

.nav-scrim[data-open] {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

body.nav-locked {
  overflow: hidden;
}

.site-footer {
  position: relative;
  z-index: 50;
  margin-top: auto;
  background: linear-gradient(180deg, #0B1330 0%, #060B1C 100%);
  border-top: 1px solid var(--line-green);
  color: var(--ink-soft);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-green) 0%, rgba(0, 255, 136, 0.3) 50%, var(--accent-orange) 100%);
}

.footer-ticker {
  overflow: hidden;
  border-bottom: 1px dashed var(--line-light);
  background: rgba(0, 255, 136, 0.04);
}

.footer-ticker__track {
  display: flex;
  width: max-content;
  animation: ticker 40s linear infinite;
}

.footer-ticker__list {
  display: flex;
  align-items: center;
  margin: 0;
  padding: 0.7rem 1.25rem;
  list-style: none;
}

.footer-ticker__list li {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--ink-dim);
  text-transform: uppercase;
  white-space: nowrap;
}

.footer-ticker__list li::before {
  content: "◆";
  color: var(--accent-orange);
  font-size: 0.6rem;
  margin-right: 1.25rem;
}

.footer-ticker__list li + li {
  margin-left: 2.5rem;
}

@keyframes ticker {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

.footer-main {
  max-width: var(--container);
  margin-inline: auto;
  padding: clamp(3rem, 6vw, 4.5rem) clamp(1.25rem, 4vw, 2.5rem) 2.5rem;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(2, minmax(0, 0.8fr)) minmax(0, 1.3fr);
  gap: 2.5rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 0;
}

.footer-brand .brand {
  margin-bottom: 1rem;
}

.footer-brand .brand-mark {
  width: 2.4rem;
  height: 2.4rem;
  font-size: 1.05rem;
}

.footer-brand .brand-name {
  font-size: 1.25rem;
}

.footer-brand-copy {
  max-width: 30rem;
  margin: 0;
  color: var(--ink-dim);
  font-size: 0.92rem;
  line-height: 1.8;
}

.footer-col {
  min-width: 0;
}

.footer-col__title {
  margin: 0 0 1rem;
  font-family: var(--font-serif);
  font-size: 1rem;
  letter-spacing: 0.1em;
  color: var(--ink-bold);
}

.footer-col__title::after {
  content: " /";
  color: var(--accent-orange);
}

.footer-links {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.7rem;
}

.footer-links a {
  color: var(--ink-soft);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color 180ms;
}

.footer-links a::before {
  content: "→";
  color: var(--accent-orange);
  margin-right: 0.5rem;
  font-size: 0.75rem;
}

.footer-links a:hover {
  color: var(--accent-green);
  text-decoration: none;
  padding-left: 0.25rem;
}

.footer-contact {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.8rem;
}

.contact-item {
  display: grid;
  grid-template-columns: 3.2rem 1fr;
  gap: 0.6rem;
  align-items: baseline;
}

.contact-key {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-green);
}

.contact-value {
  font-size: 0.9rem;
  color: var(--ink-soft);
  overflow-wrap: anywhere;
}

.footer-bar {
  max-width: var(--container);
  margin-inline: auto;
  padding: 1.4rem clamp(1.25rem, 4vw, 2.5rem);
  border-top: 1px dashed var(--line-light);
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 2rem;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-dim);
}

.footer-bar a {
  color: var(--ink-soft);
}

.footer-bar a:hover {
  color: var(--accent-green);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.2rem;
}

.to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 100;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1rem;
  border: 0;
  background: var(--accent-green);
  color: var(--ink-deep);
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 0.85rem;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(0, 255, 136, 0.28);
  opacity: 0;
  visibility: hidden;
  transform: translateY(0.75rem);
  transition: opacity 260ms var(--ease), transform 260ms var(--ease), visibility 260ms;
  clip-path: polygon(0 0, 100% 0, 92% 100%, 8% 100%);
}

.to-top[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.to-top:hover {
  background: var(--ink-bold);
}

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

.section {
  padding-block: var(--space-section);
}

.section--dark {
  background: rgba(26, 42, 74, 0.3);
  border-block: 1px solid var(--line-light);
}

.section-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 1.5rem;
  align-items: end;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

.section-index {
  grid-row: 1;
  align-self: start;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent-orange);
  letter-spacing: 0.16em;
}

.section-title {
  grid-column: 2;
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.section-copy {
  grid-column: 2;
  max-width: 44rem;
  margin: 0.8rem 0 0;
  color: var(--ink-dim);
  font-size: 1rem;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--accent-green);
  text-transform: uppercase;
}

.section-label::before {
  content: "";
  width: 1.4rem;
  height: 2px;
  background: var(--accent-orange);
}

.breadcrumbs {
  max-width: var(--container);
  margin-inline: auto;
  padding: 1.25rem clamp(1.25rem, 4vw, 2.5rem) 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  font-size: 0.86rem;
}

.breadcrumbs li + li::before {
  content: "/";
  margin-right: 0.6rem;
  color: var(--accent-orange);
}

.breadcrumbs a {
  color: var(--ink-soft);
}

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

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.col-4 {
  grid-column: span 4;
}

.col-6 {
  grid-column: span 6;
}

.col-8 {
  grid-column: span 8;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--accent-orange);
  color: var(--ink-deep);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 0.35rem 0.6rem;
}

.tag--green {
  background: var(--accent-green);
}

.card {
  position: relative;
  display: block;
  padding: 1.75rem;
  background: var(--bg-panel);
  border: 1px solid var(--line-light);
  color: inherit;
  text-decoration: none;
  transition: transform 200ms var(--ease), border-color 200ms;
}

.card:hover {
  text-decoration: none;
  transform: translateY(-4px);
  border-color: var(--line-green);
}

.card--elevated {
  background: linear-gradient(135deg, rgba(26, 42, 74, 0.92), rgba(10, 17, 40, 0.92));
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

.card__title {
  margin-bottom: 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  line-height: 1.25;
}

.card__copy {
  margin-bottom: 0;
  color: var(--ink-dim);
  font-size: 0.9rem;
}

.chapter {
  position: relative;
  padding: 1.75rem;
  border: 1px solid var(--line-light);
  background: var(--bg-panel);
}

.chapter::after {
  content: "";
  position: absolute;
  left: 1.25rem;
  right: 1.25rem;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-green), transparent);
}

.chapter-index {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-orange);
  letter-spacing: 0.16em;
}

.chapter-title {
  display: block;
  margin: 0.5rem 0 0.25rem;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 1.4rem;
  line-height: 1.25;
  color: var(--ink-bold);
}

.chapter-copy {
  margin: 0;
  color: var(--ink-dim);
  font-size: 0.9rem;
}

.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-space), #0D1930);
  border: 1px solid var(--line-light);
}

.media-frame--16x9 {
  aspect-ratio: 16 / 9;
}

.media-frame--4x3 {
  aspect-ratio: 4 / 3;
}

.media-frame--full {
  aspect-ratio: auto;
  min-height: 240px;
}

.media-frame::before {
  content: attr(data-caption);
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  max-width: calc(100% - 2rem);
  background: linear-gradient(90deg, rgba(10, 17, 40, 0.92), rgba(10, 17, 40, 0.65));
  color: var(--accent-green);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  padding: 0.4rem 0.8rem;
  border-right: 2px solid var(--accent-orange);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: repeating-linear-gradient(135deg, transparent 0 12px, rgba(255, 255, 255, 0.03) 12px 14px), linear-gradient(120deg, rgba(0, 255, 136, 0.12), transparent 55%);
}

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

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.5rem;
  padding: 1rem 1.2rem;
  background: rgba(26, 42, 74, 0.55);
  border: 1px dashed var(--line-light);
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.legend-dot {
  width: 0.7rem;
  height: 0.7rem;
  background: var(--accent-green);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.legend-dot--orange {
  background: var(--accent-orange);
}

.legend-dot--dim {
  background: var(--ink-dim);
  opacity: 0.6;
}

.legend-dot--line {
  width: 1.4rem;
  height: 2px;
  clip-path: none;
  background: var(--accent-green);
}

.route-index {
  display: grid;
  grid-template-columns: 3.2rem minmax(0, 1fr) auto;
  gap: 0.5rem 1rem;
  align-items: baseline;
  padding: 1.2rem 0;
  border-bottom: 1px dashed var(--line-light);
}

.route-index__no {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
  color: var(--accent-green);
}

.route-index__title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--ink-bold);
}

.route-index__time {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-orange);
  text-align: right;
}

.stat {
  position: relative;
  padding: 1.5rem 1.25rem 1.4rem;
  background: var(--bg-panel);
  border: 1px solid var(--line-light);
  overflow: hidden;
}

.stat::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--accent-green);
}

.stat--orange::before {
  background: var(--accent-orange);
}

.stat__value {
  font-family: var(--font-mono);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1;
  color: var(--accent-green);
  letter-spacing: -0.03em;
}

.stat--orange .stat__value {
  color: var(--accent-orange);
}

.stat__label {
  margin-top: 0.6rem;
  color: var(--ink-dim);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
}

.tabs {
  display: flex;
  gap: 0.25rem;
  border-bottom: 1px solid var(--line-light);
  margin-bottom: 1.5rem;
}

.tabs__button {
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 0.75rem 1.1rem;
  color: var(--ink-soft);
  cursor: pointer;
  font-weight: 600;
}

.tabs__button:hover {
  color: var(--ink-bold);
}

.tabs__button[aria-selected="true"] {
  color: var(--accent-green);
  border-bottom-color: var(--accent-green);
}

@media (max-width: 980px) {
  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem 2rem;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 920px) {
  .header-main {
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    min-height: 2.6rem;
    padding: 0.55rem 0.95rem;
    background: transparent;
    border: 1px solid var(--line-light);
    color: var(--ink-bold);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
  }

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

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

  .nav-toggle__icon {
    position: relative;
    width: 18px;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    transition: background 200ms;
  }

  .nav-toggle__icon::before,
  .nav-toggle__icon::after {
    content: "";
    position: absolute;
    left: 0;
    width: 18px;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    transition: transform 220ms var(--ease), top 220ms var(--ease);
  }

  .nav-toggle__icon::before {
    top: -6px;
  }

  .nav-toggle__icon::after {
    top: 6px;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__icon {
    background: transparent;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__icon::before {
    top: 0;
    transform: rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__icon::after {
    top: 0;
    transform: rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(84vw, 380px);
    z-index: 130;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 1.5rem;
    padding: 5.5rem 2rem 2.5rem;
    margin: 0;
    background: linear-gradient(160deg, var(--bg-space), #101D38);
    border-left: 1px solid var(--line-green);
    box-shadow: -18px 0 40px rgba(0, 0, 0, 0.5);
    transform: translateX(105%);
    visibility: hidden;
    transition: transform 280ms var(--ease), visibility 280ms;
  }

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

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

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

  .nav-link {
    padding: 1rem 0.4rem;
    font-size: 1.05rem;
  }

  .nav-link::after {
    left: 0.4rem;
    right: 1rem;
    bottom: 0.1rem;
  }
}

@media (max-width: 760px) {
  .grid {
    grid-template-columns: 1fr;
  }

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

  .col-4,
  .col-6,
  .col-8 {
    grid-column: auto;
  }
}

@media (max-width: 640px) {
  .section-head {
    grid-template-columns: 1fr;
  }

  .section-index,
  .section-title,
  .section-copy {
    grid-column: 1;
  }

  .header-meta {
    justify-content: center;
  }

  .header-status {
    display: none;
  }

  .header-actions .btn {
    padding: 0.5rem 0.7rem;
    font-size: 0.78rem;
  }

  .brand-name {
    font-size: 1.25rem;
  }

  .footer-main {
    grid-template-columns: 1fr;
    padding-top: 2.5rem;
  }

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

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

  .to-top {
    right: 1rem;
    bottom: 1rem;
    padding: 0.7rem 0.85rem;
  }

  .route-index {
    grid-template-columns: 2.2rem 1fr;
  }

  .route-index__time {
    grid-column: 2;
    text-align: left;
  }
}

@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;
  }

  .footer-ticker__track {
    animation: none;
  }
}