:root {
  --color-bg: #0B1E3A;
  --color-bg-alt: #0A1428;
  --color-surface: #142B4F;
  --color-accent: #7A0BC0;
  --color-neon: #39FF14;
  --color-hot: #FF2A6D;
  --color-text: #F5F7FC;
  --color-text-dim: #A6B0C3;
  --color-text-disabled: #6A7A99;
  --color-border-strong: #39FF14;
  --font-display: 'Orbitron', 'Arial Black', sans-serif;
  --font-body: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  --space-section: clamp(3.5rem, 8vw, 6.5rem);
  --shadow-card: 0 18px 36px rgba(0, 0, 0, 0.25);
}

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

html {
  margin: 0;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image:
    radial-gradient(circle at 82% -10%, rgba(122, 11, 192, 0.22), transparent 34rem),
    linear-gradient(rgba(57, 255, 20, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 255, 20, 0.028) 1px, transparent 1px);
  background-attachment: fixed, fixed, fixed;
  background-size: auto, 64px 64px, 64px 64px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body,
h1,
h2,
h3,
h4,
h5,
h6,
p,
ul,
ol,
figure,
blockquote,
dl,
dd {
  margin: 0;
  padding: 0;
}

ul[class],
ol[class] {
  list-style: none;
}

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

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

button {
  font: inherit;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
}

::selection {
  background: var(--color-neon);
  color: #0b1e3a;
}

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

#main-content,
.site-main {
  min-height: 70vh;
  scroll-margin-top: 7rem;
  position: relative;
}

.site-main {
  padding-block: clamp(2.5rem, 7vw, 5rem);
}

.container {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(1.125rem, 4vw, 3rem);
}

.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;
}

.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 200;
  padding: 1rem 1.4rem;
  background: var(--color-neon);
  color: #0b1e3a;
  font-weight: 800;
  transform: translateY(-120%);
  transition: transform 0.18s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 20, 40, 0.92);
  border-bottom: 1px solid rgba(166, 176, 195, 0.18);
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-neon), var(--color-accent) 30%, transparent);
  pointer-events: none;
}

.header__masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1rem;
}

.brand {
  display: flex;
  flex-direction: column;
}

.brand__link {
  display: inline-flex;
  flex-direction: column;
  gap: 0.15rem;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: 0.04em;
  line-height: 1.1;
  color: var(--color-text);
  text-shadow: 2px 2px 0 rgba(122, 11, 192, 0.45);
}

.brand__mark {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  color: var(--color-text-dim);
}

.brand__side {
  margin-left: auto;
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.brand__tagline {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  color: var(--color-neon);
}

.brand__index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  border: 1px solid currentColor;
  padding: 0.18rem 0.45rem;
  align-self: flex-end;
}

.site-header__nav {
  display: flex;
  justify-content: flex-end;
  background: rgba(7, 16, 30, 0.68);
  border-top: 1px solid rgba(166, 176, 195, 0.12);
}

.site-header__nav .container {
  display: flex;
  justify-content: flex-end;
}

.nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0 clamp(1.25rem, 2.5vw, 2.5rem);
}

.nav__link {
  display: flex;
  align-items: center;
  padding: 0.85rem 0.1rem 0.8rem;
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: 0.04em;
  color: var(--color-text-dim);
  border-bottom: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.nav__link::before {
  content: "/";
  font-family: var(--font-mono);
  color: var(--color-accent);
  margin-right: 0.35em;
  transition: color 0.18s ease;
}

.nav__link:hover {
  color: var(--color-text);
  border-bottom-color: var(--color-accent);
  transform: translateY(-1px);
}

.nav__link[aria-current="page"] {
  color: var(--color-neon);
  border-bottom-color: var(--color-neon);
}

.nav__link[aria-current="page"]::before {
  color: var(--color-neon);
}

.nav__toggle {
  display: none;
  position: relative;
  width: 48px;
  height: 48px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  border: 2px solid rgba(57, 255, 20, 0.8);
  background: rgba(11, 30, 58, 0.6);
  padding: 8px;
}

.nav__toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-neon);
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-line:nth-child(2) {
  opacity: 0;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

@keyframes nav-open {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 860px) {
  .header__masthead {
    flex-wrap: wrap;
    padding-block: 0.9rem;
  }

  .brand__side {
    margin-left: auto;
  }

  .brand__tagline {
    max-width: 11em;
    text-align: right;
  }

  .brand__index {
    display: none;
  }

  .nav__toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 105;
    display: none;
    justify-content: stretch;
    background: var(--color-bg-alt);
    border-top: 2px solid var(--color-neon);
    border-bottom: 2px solid var(--color-accent);
    box-shadow: 0 18px 30px rgba(0, 0, 0, 0.4);
  }

  .site-header__nav[data-open="true"] {
    display: block;
    animation: nav-open 0.18s ease;
  }

  .site-header__nav .container {
    display: block;
    padding-inline: 0;
  }

  .nav__list {
    flex-direction: column;
    gap: 0;
  }

  .nav__link {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid rgba(166, 176, 195, 0.12);
    border-left: 4px solid transparent;
    border-radius: 0;
  }

  .nav__link[aria-current="page"] {
    border-left-color: var(--color-neon);
    background: linear-gradient(90deg, rgba(57, 255, 20, 0.08), transparent 65%);
  }
}

.site-footer {
  background: var(--color-bg-alt);
  color: var(--color-text-dim);
}

.footer__accent {
  height: 4px;
  background: linear-gradient(90deg, var(--color-neon), var(--color-accent) 32%, rgba(122, 11, 192, 0.55) 70%, transparent);
}

.footer__grid {
  display: grid;
  gap: 2.5rem;
  padding: clamp(3rem, 7vw, 5rem) 0 2.5rem;
  grid-template-columns: 1fr;
}

@media (min-width: 860px) {
  .footer__grid {
    grid-template-columns: 1.2fr 0.8fr 1fr;
  }
}

.footer__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.75rem;
  letter-spacing: 0.04em;
  color: var(--color-text);
}

.footer__mark {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  color: var(--color-text-disabled);
  margin-bottom: 1rem;
}

.footer__about {
  max-width: 34rem;
  color: var(--color-text-dim);
  font-size: 0.95rem;
  margin-top: 0.5rem;
}

.footer__heading {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-neon);
  margin-bottom: 1rem;
  font-weight: 700;
}

.footer__links {
  display: grid;
  gap: 0.65rem;
}

.footer__link {
  color: var(--color-text-dim);
  font-weight: 600;
  width: fit-content;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.footer__link:hover {
  color: var(--color-neon);
  border-color: var(--color-neon);
  transform: translateX(2px);
}

.footer__contact {
  display: grid;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text-dim);
}

.footer__contact li {
  padding-left: 1rem;
  border-left: 2px solid rgba(122, 11, 192, 0.7);
}

.footer__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(166, 176, 195, 0.14);
  padding-block: 1.1rem;
  font-size: 0.8125rem;
  color: var(--color-text-disabled);
}

.footer__trust {
  margin: 0;
  padding: 0 0 2rem;
  color: var(--color-text-disabled);
  font-size: 0.8125rem;
  max-width: 80ch;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: 0.02em;
}

h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
}

h1 {
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  letter-spacing: 0.01em;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.75rem);
}

p {
  max-width: 65ch;
}

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

.section--tight {
  padding-block: clamp(2rem, 5vw, 4rem);
}

.section--alt {
  background-color: rgba(10, 20, 40, 0.72);
  border-block: 1px solid rgba(166, 176, 195, 0.12);
}

.section-head {
  display: flex;
  align-items: flex-end;
  gap: 1rem;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(166, 176, 195, 0.22);
  position: relative;
}

.section-head::after {
  content: "/";
  font-family: var(--font-mono);
  color: var(--color-accent);
  margin-left: auto;
  font-size: 1.6rem;
  line-height: 1;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-neon);
  font-weight: 700;
}

.index-marker {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.45rem;
  border: 1px solid var(--color-accent);
  color: var(--color-neon);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  transform: skewX(-8deg);
}

.display-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.75rem, 8vw, 6.5rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.display-title--neon {
  color: var(--color-neon);
  text-shadow: 4px 4px 0 rgba(122, 11, 192, 0.35);
}

.display-title--outline {
  color: transparent;
  -webkit-text-stroke: 2px var(--color-text);
}

.lede {
  font-size: clamp(1.0625rem, 1.8vw, 1.375rem);
  line-height: 1.8;
  color: var(--color-text-dim);
  max-width: 64ch;
  margin-top: 1.25rem;
}

.prose {
  max-width: 72ch;
}

.prose > * + * {
  margin-top: 1em;
}

.prose h2,
.prose h3 {
  margin-top: 1.5em;
}

.prose p {
  line-height: 1.85;
  color: #cbd2e0;
}

.prose ul {
  padding-left: 1.25rem;
  color: var(--color-text-dim);
}

.prose li {
  margin-top: 0.4em;
}

.prose blockquote {
  border-left: 4px solid var(--color-accent);
  padding-left: 1.25rem;
  color: var(--color-text-dim);
  font-style: italic;
}

.grid {
  display: grid;
  gap: clamp(1rem, 2.4vw, 1.75rem);
  grid-template-columns: 1fr;
}

@media (min-width: 720px) {
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card-grid {
  display: grid;
  gap: clamp(1rem, 2.4vw, 1.75rem);
  grid-template-columns: 1fr;
}

.card-grid--2 {
  grid-template-columns: 1fr;
}

.card-grid--3 {
  grid-template-columns: 1fr;
}

@media (min-width: 720px) {
  .card-grid--2,
  .card-grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1080px) {
  .card-grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--color-surface);
  border: 2px solid rgba(166, 176, 195, 0.16);
  padding: clamp(1.25rem, 2.2vw, 2rem);
  position: relative;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.card::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  width: 38px;
  height: 38px;
  border-top: 4px solid var(--color-neon);
  border-left: 4px solid var(--color-neon);
  pointer-events: none;
}

.card:hover,
.card:focus-within {
  transform: translateY(-4px);
  border-color: rgba(57, 255, 20, 0.8);
  box-shadow: 10px 10px 0 rgba(122, 11, 192, 0.16);
}

.card__title {
  font-size: 1.35rem;
  margin: 1rem 0 0.5rem;
}

.card__text {
  color: var(--color-text-dim);
  font-size: 0.95rem;
  line-height: 1.7;
}

.card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-disabled);
}

.card > .btn {
  margin-top: 1.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.9375rem;
  line-height: 1;
  padding: 0.85rem 1.4rem;
  border: 2px solid transparent;
  color: var(--color-text);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

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

.btn--primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.35);
}

.btn--primary:hover {
  background: #8d15dc;
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.35);
}

.btn--ghost {
  border-color: var(--color-neon);
  color: var(--color-neon);
  box-shadow: 4px 4px 0 rgba(57, 255, 20, 0.15);
}

.btn--ghost:hover {
  background: rgba(57, 255, 20, 0.08);
}

.btn--small {
  padding: 0.55rem 1rem;
  font-size: 0.8125rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.5rem;
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  line-height: 1.5;
  color: var(--color-neon);
}

.tag--hot {
  color: var(--color-hot);
}

.tag--dim {
  color: var(--color-text-disabled);
}

.panel {
  background: var(--color-surface);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border-left: 6px solid var(--color-accent);
  box-shadow: var(--shadow-card);
  position: relative;
}

.panel--neon {
  border-left-color: var(--color-neon);
}

.panel::after {
  content: "";
  position: absolute;
  right: -8px;
  bottom: -8px;
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, transparent, var(--color-accent));
  opacity: 0.3;
  pointer-events: none;
}

.media-frame {
  position: relative;
  display: block;
  aspect-ratio: 16 / 10;
  background: var(--color-bg-alt);
  border: 2px solid var(--color-border-strong);
  overflow: hidden;
}

.media-frame::after {
  content: "MEDIA";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.3em;
  color: rgba(57, 255, 20, 0.35);
  background: linear-gradient(135deg, rgba(122, 11, 192, 0.2) 0%, transparent 55%),
              repeating-linear-gradient(-45deg, rgba(57, 255, 20, 0.05) 0 1px, transparent 1px 8px);
}

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

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

.media-frame--arena::after {
  content: "ARENA";
}

.timeline {
  display: grid;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline__item {
  position: relative;
  padding-left: 1.75rem;
  border-left: 2px solid rgba(122, 11, 192, 0.55);
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 0.55rem;
  width: 10px;
  height: 10px;
  background: var(--color-neon);
  transform: rotate(45deg);
}

.timeline__year {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-neon);
  letter-spacing: 0.12em;
  font-weight: 700;
}

.timeline__body {
  margin-top: 0.25rem;
  color: var(--color-text-dim);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.5rem;
  margin: 1.5rem 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-text-disabled);
}

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

.breadcrumb li + li::before {
  content: "/";
  color: var(--color-accent);
}

.breadcrumb a {
  color: var(--color-text-dim);
  transition: color 0.18s ease;
}

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

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

.chapter-index {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.16em;
  color: var(--color-neon);
  font-weight: 700;
}

.chapter-index::before {
  content: "#";
  color: var(--color-accent);
}

[data-chapter] {
  scroll-margin-top: 7rem;
}

[data-chapter] .chapter-index,
[data-chapter] > .chapter-index {
  opacity: 0.25;
  transform: translateX(-6px) skewX(-8deg);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

[data-chapter][data-visible="true"] .chapter-index,
[data-chapter][data-visible="true"] > .chapter-index {
  opacity: 1;
  transform: none;
}

@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;
  }

  [data-chapter] .chapter-index,
  [data-chapter] > .chapter-index {
    opacity: 1 !important;
    transform: none !important;
  }
}