:root {
  --blue-deep: #0A1E3C;
  --blue-mid: #06122B;
  --orange: #FF6A00;
  --orange-light: #FF9A00;
  --green: #39FF14;
  --blue-accent: #4A90E2;
  --white: #FFFFFF;
  --mist: #B0BEC5;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-strong: rgba(255, 255, 255, 0.08);
  --line: rgba(255, 255, 255, 0.14);
  --rail-w: 104px;
  --header-h: 68px;
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-pill: 999px;
  --font-display: Impact, 'Arial Black', sans-serif;
  --font-data: 'Roboto Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-body: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding-left: var(--rail-w);
  background-color: var(--blue-deep);
  color: var(--white);
  font-family: var(--font-body);
  line-height: 1.7;
  -webkit-text-size-adjust: 100%;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(57, 255, 20, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 255, 20, 0.035) 1px, transparent 1px);
  background-size: 56px 56px;
}

#main-content {
  display: block;
  position: relative;
  z-index: 1;
  min-height: 70vh;
  scroll-margin-top: 80px;
}

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

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

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: 0.01em;
}

button {
  font: inherit;
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid var(--green);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 300;
  padding: 12px 20px;
  background: var(--orange);
  color: var(--blue-deep);
  font-weight: 700;
  border-radius: var(--radius-pill);
  transform: translateY(-220%);
  transition: transform 0.2s ease;
}

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

.container {
  width: 100%;
  max-width: 1440px;
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 64px);
}

.container--narrow {
  max-width: 960px;
}

.page-shell {
  padding-block: clamp(24px, 6vw, 80px);
}

.section {
  padding-block: clamp(56px, 10vw, 120px);
}

.section--tight {
  padding-block: 32px;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 32px;
}

.section-kicker {
  display: block;
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  color: var(--green);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(2rem, 5vw, 4rem);
  text-transform: uppercase;
  color: var(--white);
}

.index-note {
  font-family: var(--font-data);
  font-size: 0.8rem;
  color: var(--mist);
  letter-spacing: 0.06em;
}

.site-header {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  width: var(--rail-w);
  background: var(--blue-mid);
  border-right: 1px solid var(--line);
  z-index: 100;
  display: flex;
}

.site-header::after {
  content: "";
  position: absolute;
  top: 0;
  right: -1px;
  width: 1px;
  height: 100%;
  background: linear-gradient(to bottom, transparent, var(--orange) 30%, var(--green) 80%, transparent);
  pointer-events: none;
}

.header__inner {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding: 20px 10px 16px;
}

.site-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--orange), var(--green));
  z-index: 300;
}

.site-brand {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-brand__mark {
  width: 48px;
  height: 48px;
  flex: 0 0 auto;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--orange), var(--orange-light));
  color: var(--blue-deep);
  font-family: var(--font-display);
  font-size: 2rem;
  display: grid;
  place-items: center;
  transform: rotate(-8deg);
  box-shadow: 0 10px 24px rgba(255, 106, 0, 0.25);
  transition: transform 0.25s ease;
}

.site-brand:hover .site-brand__mark {
  transform: rotate(6deg) scale(1.05);
}

.site-brand__name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--white);
  display: flex;
  flex-wrap: wrap;
  gap: 0 4px;
  align-items: baseline;
}

.site-brand__name em {
  font-style: normal;
  color: var(--orange);
}

.site-brand__version {
  font-family: var(--font-data);
  font-size: 0.68rem;
  color: var(--green);
  border: 1px solid rgba(57, 255, 20, 0.45);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.site-header .site-brand {
  flex-direction: column;
}

.site-header .site-brand__name {
  justify-content: center;
}

.site-brand--footer {
  flex-direction: row;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
}

.site-nav {
  flex: 1;
  display: flex;
  min-height: 0;
}

.site-nav__list {
  position: relative;
  width: 100%;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 0;
}

.site-nav__list::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--orange) 15%, rgba(57, 255, 20, 0.55) 85%, transparent);
  transform: translateX(-50%);
}

.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 44px;
  border-radius: var(--radius-pill);
  color: var(--mist);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  transition: color 0.2s, background 0.2s, transform 0.2s;
}

.nav-link:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.05);
  transform: translateX(2px);
}

.nav-link::after {
  content: "";
  position: absolute;
  right: 6px;
  bottom: 7px;
  width: 12px;
  height: 2px;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.2s;
}

.nav-link:hover::after {
  transform: scaleX(1);
}

.nav-link[aria-current="page"] {
  background: var(--orange);
  color: var(--blue-deep);
  box-shadow: 0 10px 24px rgba(255, 106, 0, 0.35);
}

.nav-link[aria-current="page"]::after {
  display: none;
}

.nav-link[aria-current="page"]:hover {
  background: var(--orange);
  color: var(--blue-deep);
  transform: none;
}

.site-footer {
  position: relative;
  z-index: 1;
  background: var(--blue-mid);
  border-top: 1px solid var(--line);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--orange) 30%, var(--green) 70%, transparent);
  opacity: 0.55;
}

.footer__inner {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) 2fr;
  gap: clamp(32px, 6vw, 80px);
  padding-top: clamp(48px, 8vw, 80px);
  padding-bottom: 40px;
}

.footer__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
}

.site-footer .site-brand__mark {
  width: 46px;
  height: 46px;
}

.site-footer .site-brand__name {
  font-size: 1.4rem;
}

.footer__trust {
  color: var(--mist);
  max-width: 32ch;
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer__columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.footer__title {
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 16px;
}

.footer__list {
  display: grid;
  gap: 10px;
}

.footer__link {
  color: var(--mist);
  transition: color 0.2s;
}

.footer__link:hover {
  color: var(--orange);
}

.footer__contact {
  color: var(--mist);
  font-size: 0.85rem;
  line-height: 1.65;
}

.footer__meta {
  margin-top: 40px;
  border-top: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.18);
}

.footer__meta-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-content: center;
  gap: 8px 16px;
  padding-block: 14px;
  color: var(--mist);
  font-size: 0.78rem;
}

.footer__copy,
.footer__icp {
  margin: 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--orange);
  color: var(--blue-deep);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1;
  padding: 15px 26px;
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 0 var(--blue-mid), 0 16px 32px rgba(255, 106, 0, 0.16);
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.button:hover {
  background: var(--orange-light);
  transform: translateY(-2px);
  box-shadow: 0 10px 0 var(--blue-mid), 0 20px 40px rgba(255, 106, 0, 0.22);
}

.button:active {
  transform: translateY(2px);
  box-shadow: 0 3px 0 var(--blue-mid), 0 10px 20px rgba(255, 106, 0, 0.12);
}

.button--ghost {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--line);
  box-shadow: none;
}

.button--ghost:hover {
  background: var(--surface-strong);
  border-color: var(--green);
  color: var(--green);
  transform: none;
  box-shadow: none;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--mist);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

.tag--accent {
  color: var(--green);
  border-color: rgba(57, 255, 20, 0.4);
  background: rgba(57, 255, 20, 0.06);
}

.tag--orange {
  color: var(--orange);
  border-color: rgba(255, 106, 0, 0.4);
  background: rgba(255, 106, 0, 0.06);
}

.badge {
  display: inline-grid;
  place-items: center;
  min-width: 44px;
  height: 44px;
  padding: 0 14px;
  border-radius: 14px;
  background: var(--blue-mid);
  border: 1px solid var(--line);
  color: var(--green);
  font-family: var(--font-data);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: clamp(16px, 3vw, 24px);
}

.data-card {
  position: relative;
  padding: 22px 22px 24px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  overflow: hidden;
  transition: transform 0.2s, border-color 0.2s, background 0.2s;
}

.data-card::before {
  content: "";
  position: absolute;
  top: 18px;
  left: 0;
  width: 4px;
  height: 42px;
  border-radius: 0 4px 4px 0;
  background: var(--orange);
}

.data-card::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 70px;
  height: 70px;
  border-radius: 50% 0 0 0;
  background: radial-gradient(circle, rgba(57, 255, 20, 0.06), transparent 70%);
}

.data-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 106, 0, 0.55);
  background: var(--surface-strong);
}

.data-card__label {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--mist);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.data-card__number {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 0.9;
  color: var(--green);
  margin-bottom: 8px;
}

.data-card__meta {
  font-size: 0.82rem;
  color: var(--mist);
}

.grid {
  display: grid;
  gap: clamp(20px, 4vw, 40px);
}

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

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 18px 0;
  font-size: 0.8rem;
  color: var(--mist);
}

.breadcrumb__link {
  color: var(--mist);
  transition: color 0.2s;
}

.breadcrumb__link:hover {
  color: var(--orange);
}

.breadcrumb__sep {
  color: var(--green);
  font-family: var(--font-data);
}

.prose {
  color: var(--mist);
  max-width: 72ch;
}

.prose h2,
.prose h3 {
  color: var(--white);
  margin: 1.8em 0 0.5em;
}

.prose p {
  margin: 0 0 1.3em;
}

.prose a {
  color: var(--orange);
  border-bottom: 1px solid currentColor;
}

.prose ul {
  display: grid;
  gap: 10px;
  margin: 1em 0;
}

.prose li {
  position: relative;
  padding-left: 22px;
}

.prose li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--green);
  font-family: var(--font-data);
}

.exhibition-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--orange);
}

.exhibition-label::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--orange);
}

.caption {
  border-left: 2px solid var(--green);
  padding-left: 14px;
  color: var(--mist);
  font-size: 0.8rem;
  line-height: 1.7;
}

.vertical-note {
  writing-mode: vertical-rl;
  font-family: var(--font-data);
  font-size: 0.68rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--mist);
}

.notice {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 20px;
  border-radius: 16px;
  background: rgba(57, 255, 20, 0.07);
  border: 1px solid rgba(57, 255, 20, 0.2);
  border-left: 4px solid var(--green);
  color: var(--mist);
}

.notice::before {
  content: "!";
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--green);
  color: var(--blue-deep);
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 0.8rem;
}

.theme-band {
  position: relative;
  padding-block: clamp(48px, 8vw, 96px);
  background: linear-gradient(90deg, rgba(6, 18, 43, 0.3), rgba(74, 144, 226, 0.08)), var(--blue-mid);
  border-block: 1px solid var(--line);
  margin-block: clamp(32px, 6vw, 72px);
}

.theme-band::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 80px;
  height: 80px;
  border-top: 4px solid var(--orange);
  border-right: 4px solid var(--green);
  opacity: 0.8;
}

.image-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: linear-gradient(140deg, rgba(74, 144, 226, 0.16), rgba(57, 255, 20, 0.06) 60%, rgba(255, 106, 0, 0.08)), var(--blue-mid);
  border: 1px solid var(--line);
}

.image-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 60%, rgba(255, 106, 0, 0.12));
  pointer-events: none;
}

.image-frame > img,
.image-frame > svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-frame[data-aspect="wide"] {
  aspect-ratio: 16 / 9;
}

.image-frame[data-aspect="square"] {
  aspect-ratio: 1 / 1;
}

.image-frame[data-aspect="portrait"] {
  aspect-ratio: 3 / 4;
}

.image-frame[data-aspect="tall"] {
  aspect-ratio: 4 / 5;
}

.image-frame--diagonal {
  clip-path: polygon(0 0, 100% 0, 100% 84%, 0 100%);
}

.image-frame__note {
  position: absolute;
  left: 16px;
  bottom: 12px;
  margin: 0;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: rgba(6, 18, 43, 0.72);
  border: 1px solid rgba(57, 255, 20, 0.3);
  color: var(--green);
  font-family: var(--font-data);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
}

@media (max-width: 1023px) {
  body {
    padding-left: 0;
  }

  .site-header {
    inset: 0 0 auto 0;
    width: auto;
    height: var(--header-h);
    border-right: 0;
    border-bottom: 1px solid var(--line);
    background: rgba(6, 18, 43, 0.94);
    backdrop-filter: blur(10px);
  }

  .header__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
  }

  .site-header .site-brand {
    flex-direction: row;
  }

  .site-brand__name {
    font-size: 1.05rem;
  }

  .site-brand__mark {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    font-size: 1.7rem;
  }

  .site-brand__version {
    font-size: 0.6rem;
  }

  .nav-toggle {
    position: relative;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 40px;
    padding: 0 14px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--line);
    color: var(--white);
    background: var(--surface);
    transition: border-color 0.2s, color 0.2s, background 0.2s;
  }

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

  .nav-toggle[aria-expanded="true"] {
    border-color: var(--orange);
    color: var(--orange);
    background: rgba(255, 106, 0, 0.08);
  }

  .nav-toggle__line {
    position: relative;
    display: block;
    width: 20px;
    height: 2px;
    background: currentColor;
    transition: background 0.2s;
  }

  .nav-toggle__line::before,
  .nav-toggle__line::after {
    content: "";
    position: absolute;
    left: 0;
    width: 20px;
    height: 2px;
    background: currentColor;
    transition: transform 0.2s, top 0.2s;
  }

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

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

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

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

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

  .nav-toggle__label {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
  }

  .site-nav {
    position: fixed;
    inset: 0 0 0 auto;
    z-index: 1;
    width: min(82vw, 360px);
    padding: calc(var(--header-h) + 16px) 20px 32px;
    background: var(--blue-mid);
    border-left: 1px solid var(--line);
    box-shadow: var(--shadow);
    flex: initial;
    display: block;
    overflow-y: auto;
    transform: translateX(105%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s;
  }

  .site-nav[data-open] {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
  }

  .site-nav__list {
    flex: initial;
    width: auto;
    align-items: stretch;
    gap: 6px;
    padding: 0;
  }

  .site-nav__list::before {
    display: none;
  }

  .nav-link {
    width: 100%;
    height: 52px;
    justify-content: flex-start;
    padding: 0 20px;
    border-radius: 16px;
    font-size: 1rem;
  }

  .nav-link:hover {
    transform: none;
  }
}

@media (max-width: 767px) {
  .section-head {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .footer__inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer__columns {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer__meta-row {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}