:root {
  --bg: #060A14;
  --panel: #0E1626;
  --line: #1E2B45;
  --text: #F2F5FB;
  --muted: #94A0B8;
  --cyan: #3FE0D0;
  --purple: #8A6BFF;
  --orange: #FF9A4D;
  --white: #FFFFFF;
  --teal-bed: #0F3B3A;
  --radius: 2px;
  --max: 1240px;
  --gutter: clamp(18px, 4vw, 48px);
  --font-display: "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  font-weight: 400;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img,
svg,
video {
  display: block;
  max-width: 100%;
  height: auto;
}
a {
  color: inherit;
  text-decoration: none;
}
button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}
button {
  background: none;
  border: 0;
  cursor: pointer;
}
ul,
ol {
  list-style: none;
  margin: 0;
  padding: 0;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-family: var(--font-display);
  line-height: 1.15;
  letter-spacing: 0.02em;
}
h1 {
  font-weight: 900;
}
h2,
h3 {
  font-weight: 500;
}
p {
  margin: 0;
}
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}
::selection {
  background: var(--purple);
  color: var(--white);
}
#main-content {
  outline: 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;
    scroll-behavior: auto !important;
  }
}
.skip-link {
  position: fixed;
  left: 16px;
  top: 16px;
  z-index: 300;
  transform: translateY(-180%);
  background: var(--cyan);
  color: #03110f;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  transition: transform 0.2s ease-out;
}
.skip-link:focus {
  transform: translateY(0);
}
.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}
.container {
  width: min(calc(100% - (2 * var(--gutter))), var(--max));
  margin-inline: auto;
}
.lead {
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.8;
  color: var(--text);
  max-width: 38em;
}
.body-copy {
  color: var(--muted);
  max-width: 38em;
}
.body-copy + .body-copy {
  margin-top: 1.2em;
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
  text-transform: uppercase;
}
.section-index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.12em;
  transition: color 0.25s ease-out;
}
.section-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 5vw, 72px);
  line-height: 0.95;
  letter-spacing: 0.08em;
  transform: scaleX(0.92);
  transform-origin: left center;
  color: var(--white);
}
.section-kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}
[data-section] {
  position: relative;
}
[data-section].is-active .section-index {
  color: var(--cyan);
}
[data-section].is-active .section-title {
  text-shadow: 0 0 26px rgba(63, 224, 208, 0.16);
}
.divider {
  height: 1px;
  background: var(--line);
  border: 0;
  margin: 0;
}
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}
.col-span-3 {
  grid-column: span 3;
}
.col-span-4 {
  grid-column: span 4;
}
.col-span-5 {
  grid-column: span 5;
}
.col-span-6 {
  grid-column: span 6;
}
.col-span-7 {
  grid-column: span 7;
}
.col-span-8 {
  grid-column: span 8;
}
.col-span-12 {
  grid-column: span 12;
}
.split-38-62 {
  display: grid;
  grid-template-columns: 38fr 62fr;
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
}
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  position: relative;
}
.panel--stack {
  box-shadow: 10px 10px 0 rgba(30, 43, 69, 0.35), -10px -10px 0 rgba(14, 22, 38, 0.7);
}
.panel__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}
.panel__index {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: 0.12em;
}
.panel__title {
  font-size: 16px;
  font-weight: 500;
  color: var(--white);
}
.panel__body {
  padding: clamp(18px, 3vw, 32px);
}
.panel__footer {
  padding: 14px 18px;
  border-top: 1px solid var(--line);
}
.exhibit-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}
.exhibit-label::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--cyan);
}
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--muted);
  background: rgba(14, 22, 38, 0.6);
}
.tag--cyan {
  border-color: rgba(63, 224, 208, 0.5);
  color: var(--cyan);
}
.tag--purple {
  border-color: rgba(138, 107, 255, 0.55);
  color: var(--purple);
}
.tag--orange {
  border-color: rgba(255, 154, 77, 0.55);
  color: var(--orange);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-decoration: none;
  transition: transform 0.2s ease-out, border-color 0.2s ease-out, background 0.2s ease-out, color 0.2s ease-out;
}
.btn:hover {
  transform: translateY(-2px);
}
.btn--cyan {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(63, 224, 208, 0.06);
}
.btn--cyan:hover {
  background: var(--cyan);
  color: #03110f;
}
.btn--purple {
  border-color: var(--purple);
  color: var(--purple);
  background: rgba(138, 107, 255, 0.06);
}
.btn--purple:hover {
  background: var(--purple);
  color: var(--white);
}
.btn--orange {
  border-color: var(--orange);
  color: var(--orange);
  background: rgba(255, 154, 77, 0.08);
}
.btn--orange:hover {
  background: var(--orange);
  color: #1a0b00;
}
.btn--ghost {
  color: var(--muted);
}
.btn--ghost:hover {
  border-color: var(--muted);
  color: var(--white);
}
.breadcrumb {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb__link {
  color: var(--muted);
}
.breadcrumb__link:hover {
  color: var(--cyan);
}
.breadcrumb__sep {
  color: var(--line);
}
.breadcrumb__current {
  color: var(--text);
}
.data-list {
  border: 1px solid var(--line);
  background: var(--panel);
}
.data-row {
  display: grid;
  grid-template-columns: minmax(120px, 0.36fr) 1fr;
  gap: 16px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: background 0.2s ease-out;
}
.data-row:last-child {
  border-bottom: 0;
}
.data-row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: transparent;
  transition: width 0.2s ease-out, background 0.2s ease-out;
}
.data-row:hover {
  background: rgba(63, 224, 208, 0.035);
}
.data-row:hover::before {
  width: 4px;
  background: var(--cyan);
}
.data-row__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.data-row__value {
  color: var(--text);
  font-size: 15px;
}
.notice {
  border-left: 3px solid var(--orange);
  background: rgba(255, 154, 77, 0.07);
  padding: 14px 18px;
  color: var(--text);
}
.notice__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--orange);
  margin-bottom: 6px;
  text-transform: uppercase;
}
.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(14, 22, 38, 0.92), rgba(6, 10, 20, 0.98)),
    repeating-linear-gradient(0deg, transparent 0 23px, rgba(30, 43, 69, 0.35) 23px 24px);
  min-height: 220px;
}
.media-frame--wide {
  aspect-ratio: 16 / 9;
}
.media-frame--tall {
  aspect-ratio: 4 / 5;
}
.media-frame__inner {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}
.media-frame__body {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.78) contrast(1.1);
}
.media-frame__tag {
  position: absolute;
  left: 0;
  bottom: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: rgba(6, 10, 20, 0.88);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
}
.media-frame__placeholder {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-align: center;
  padding: 24px;
}
.media-frame--crop-right .media-frame__body {
  object-position: 75% 50%;
}
.media-frame--crop-bottom .media-frame__body {
  object-position: 50% 80%;
}
.cta-strip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 22px;
  border: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(63, 224, 208, 0.08), rgba(138, 107, 255, 0.08), rgba(255, 154, 77, 0.06));
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 10, 20, 0.96);
  border-bottom: 1px solid var(--line);
  transition: background 0.25s ease-out, border-color 0.25s ease-out, box-shadow 0.25s ease-out;
}
.site-header.is-scrolled {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}
.reading-progress {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: rgba(30, 43, 69, 0.45);
  overflow: hidden;
}
.reading-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--purple) 55%, var(--orange));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.08s linear;
}
.header-inner {
  width: min(calc(100% - (2 * var(--gutter))), var(--max));
  margin-inline: auto;
  position: relative;
  padding: 18px 0 0;
  transition: padding 0.25s ease-out;
}
.masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  padding-bottom: 14px;
  transition: padding 0.25s ease-out;
}
.masthead-wing {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.masthead-wing--left {
  justify-content: flex-end;
}
.masthead-wing--right {
  justify-content: flex-start;
}
.masthead-line {
  display: block;
  height: 1px;
  flex: 1;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}
.masthead-issue {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--muted);
  white-space: nowrap;
  text-transform: uppercase;
}
.brand {
  text-align: center;
  text-decoration: none;
  display: block;
  color: var(--white);
}
.brand-name {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.2vw, 60px);
  line-height: 0.92;
  letter-spacing: 0.14em;
  transform: scaleX(0.92);
  transform-origin: center;
}
.brand-sub {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
  white-space: nowrap;
}
.primary-nav {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: margin 0.25s ease-out, border-color 0.25s ease-out;
}
.nav-list {
  display: flex;
  justify-content: center;
  align-items: stretch;
  gap: 0;
  flex-wrap: wrap;
}
.nav-item {
  display: flex;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px clamp(10px, 1.6vw, 22px);
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.06em;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease-out, border-color 0.2s ease-out, background 0.2s ease-out;
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--text);
  background: rgba(63, 224, 208, 0.04);
}
.nav-index {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
}
.nav-label {
  font-weight: 500;
}
.nav-link[aria-current="page"] {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}
.nav-link[aria-current="page"] .nav-index {
  color: var(--cyan);
}
.header-utility {
  position: absolute;
  right: 0;
  bottom: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--purple);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  background: rgba(138, 107, 255, 0.08);
  transition: background 0.2s ease-out, color 0.2s ease-out, border-color 0.2s ease-out, transform 0.2s ease-out;
}
.header-utility::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--orange);
  box-shadow: 0 0 12px var(--orange);
}
.header-utility:hover {
  background: var(--purple);
  color: var(--white);
  border-color: var(--purple);
}
.nav-toggle {
  display: none;
  position: absolute;
  right: 0;
  top: 18px;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
}
.nav-toggle__bar {
  display: block;
  width: 18px;
  height: 1px;
  background: currentColor;
  transition: transform 0.2s ease-out, opacity 0.2s ease-out;
}
.nav-toggle__text {
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--muted);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}
.site-header.is-scrolled .brand-name {
  font-size: clamp(18px, 2.2vw, 26px);
}
.site-header.is-scrolled .brand-sub {
  display: none;
}
.site-header.is-scrolled .masthead {
  padding-bottom: 8px;
}
.site-header.is-scrolled .header-inner {
  padding-top: 10px;
}
.site-footer {
  background: #050812;
  border-top: 1px solid var(--line);
  margin-top: clamp(80px, 12vw, 160px);
  color: var(--muted);
}
.site-footer::before {
  content: "";
  display: block;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}
.footer-inner {
  width: min(calc(100% - (2 * var(--gutter))), var(--max));
  margin-inline: auto;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  padding: clamp(32px, 5vw, 64px) 0 24px;
  border-bottom: 1px solid var(--line);
}
.footer-brand__name {
  display: block;
  color: var(--white);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 0.9;
  letter-spacing: 0.14em;
  transform: scaleX(0.92);
  transform-origin: left center;
}
.footer-brand__meta {
  margin-top: 10px;
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--muted);
}
.back-top {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  color: var(--muted);
  background: transparent;
  transition: border-color 0.2s ease-out, color 0.2s ease-out, background 0.2s ease-out;
}
.back-top:hover {
  border-color: var(--cyan);
  color: var(--white);
  background: rgba(63, 224, 208, 0.06);
}
.back-top__index {
  font-size: 10px;
  color: var(--orange);
}
.back-top__label {
  font-size: 12px;
  letter-spacing: 0.12em;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--line);
}
.footer-col {
  padding: 28px clamp(16px, 2vw, 28px);
  border-left: 1px solid var(--line);
  min-width: 0;
}
.footer-col:first-child {
  border-left: 0;
}
.footer-col__title {
  margin: 0 0 16px;
  color: var(--white);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.footer-list li + li {
  margin-top: 10px;
}
.footer-list a {
  color: var(--muted);
  font-size: 14px;
  display: inline-block;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease-out, border-color 0.2s ease-out;
}
.footer-list a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}
.footer-contact-line {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.75;
  word-break: break-word;
}
.footer-contact-line + .footer-contact-line {
  margin-top: 8px;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0;
}
.footer-legal,
.footer-note {
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.footer-note {
  text-align: right;
}
@media (min-width: 861px) {
  .site-header.is-scrolled .masthead {
    display: none;
  }
  .site-header.is-scrolled .header-inner {
    padding-top: 0;
  }
  .site-header.is-scrolled .primary-nav {
    border-top: 0;
    border-bottom: 0;
  }
  .site-header.is-scrolled .nav-list {
    justify-content: flex-start;
  }
  .site-header.is-scrolled .nav-link:not([aria-current="page"]) {
    display: none;
  }
  .site-header.is-scrolled .nav-link[aria-current="page"] {
    border-bottom-color: transparent;
  }
  .site-header.is-scrolled .header-utility {
    top: 50%;
    bottom: auto;
    transform: translateY(-50%);
  }
}
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-col:nth-child(odd) {
    border-left: 0;
  }
  .footer-col:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }
}
@media (max-width: 860px) {
  .header-inner {
    padding: 14px 16px 0;
  }
  .masthead {
    grid-template-columns: 1fr;
    padding-right: 0;
    padding-bottom: 12px;
  }
  .masthead-wing {
    display: none;
  }
  .brand-name {
    font-size: clamp(28px, 9vw, 42px);
  }
  .brand-sub {
    white-space: normal;
    font-size: 9px;
  }
  .primary-nav {
    max-height: 0;
    overflow: hidden;
    border-top: 0;
    transition: max-height 0.3s ease-out, border-color 0.2s ease-out;
  }
  .primary-nav[data-open] {
    max-height: 620px;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
  }
  .nav-link {
    justify-content: flex-start;
    padding: 13px 16px;
    border-bottom: 1px solid var(--line);
  }
  .nav-link[aria-current="page"] {
    background: rgba(63, 224, 208, 0.06);
    border-bottom-color: var(--line);
    border-left: 3px solid var(--cyan);
  }
  .nav-toggle {
    display: inline-flex;
  }
  .header-utility {
    position: static;
    margin: 12px 16px 0;
    width: max-content;
    max-width: calc(100% - 32px);
    transform: none;
  }
  .split-38-62,
  .grid-12 {
    grid-template-columns: 1fr;
  }
  .col-span-3,
  .col-span-4,
  .col-span-5,
  .col-span-6,
  .col-span-7,
  .col-span-8,
  .col-span-12 {
    grid-column: 1 / -1;
  }
  .data-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  .cta-strip {
    flex-direction: column;
    align-items: flex-start;
  }
}
@media (max-width: 640px) {
  .footer-top {
    flex-direction: column;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-col {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .footer-col:first-child {
    border-top: 0;
  }
  .footer-bottom {
    flex-direction: column;
  }
  .footer-note {
    text-align: left;
  }
}