:root {
  --bg: #060A12;
  --panel: #0E1626;
  --panel-high: #16213A;
  --neon: #35F0D6;
  --violet: #7C5CFF;
  --orange: #FF8A3D;
  --red: #FF5D6C;
  --text: #E9F1FF;
  --muted: #97A6C4;
  --line: #2A3A5C;
  --neon-dark: #1FA98F;
  --grid: #101C33;
  --rail-w: 88px;
  --radius: 16px;
  --radius-sm: 10px;
  --font-head: "Arial Black", "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
  --font-num: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

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

html {
  line-height: 1.8;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  padding-left: var(--rail-w);
  background:
    radial-gradient(circle at 82% 8%, rgba(53, 240, 214, 0.08), transparent 32%),
    radial-gradient(circle at 16% 86%, rgba(124, 92, 255, 0.1), transparent 34%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  text-rendering: optimizeLegibility;
}

body[data-device="mobile"] .grid-12 {
  grid-template-columns: 1fr;
}

body[data-device="mobile"] .content-main,
body[data-device="mobile"] .content-aside {
  grid-column: 1 / -1;
}

img,
svg,
video,
canvas {
  display: block;
  max-width: 100%;
  height: auto;
}

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

button {
  cursor: pointer;
}

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

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

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--text);
  font-family: var(--font-head);
  line-height: 1.12;
  letter-spacing: -0.035em;
}

h1 {
  font-size: clamp(40px, 6vw, 64px);
}

h2 {
  font-size: clamp(22px, 3vw, 26px);
}

h3 {
  font-size: 20px;
}

p {
  margin: 0;
}

p + p {
  margin-top: 1em;
}

::selection {
  background: rgba(53, 240, 214, 0.28);
  color: var(--text);
}

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

.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: fixed;
  top: 8px;
  left: 8px;
  z-index: 999;
  transform: translateY(-160%);
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--orange);
  color: #061018;
  font-weight: 800;
  transition: transform 0.15s ease;
}

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

.site-header {
  position: relative;
  z-index: 100;
}

.brand-rail {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 120;
  width: var(--rail-w);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding: 18px 10px;
  background: linear-gradient(180deg, var(--panel), #090F1D);
  border-right: 1px solid var(--line);
}

.brand-mark {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  color: var(--text);
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
}

.brand-mark__num {
  color: var(--neon);
  font-size: 28px;
  text-shadow: 0 0 18px rgba(53, 240, 214, 0.45);
}

.brand-mark__text {
  color: var(--text);
  font-size: 12px;
}

.brand-sub {
  margin: 8px 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.4;
  letter-spacing: 0.12em;
  writing-mode: vertical-rl;
}

.device-switch {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
}

.device-switch__btn {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-high);
  color: var(--muted);
  padding: 6px 0;
  font-size: 12px;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.device-switch__btn.is-active,
.device-switch__btn[aria-pressed="true"] {
  background: var(--neon);
  border-color: var(--neon);
  color: var(--bg);
  box-shadow: 0 0 16px rgba(53, 240, 214, 0.25);
}

.subscribe-steps {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}

.subscribe-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 2px;
  border: 1px dashed var(--line);
  border-radius: 10px;
  color: var(--muted);
  font-size: 11px;
}

.subscribe-step__num {
  color: var(--muted);
  font-family: var(--font-num);
  font-size: 10px;
}

.subscribe-step a {
  color: inherit;
}

.subscribe-step.is-done {
  border-color: rgba(53, 240, 214, 0.55);
  color: var(--neon);
}

.subscribe-step.is-active {
  border-style: solid;
  border-color: var(--orange);
  color: var(--orange);
  box-shadow: 0 0 14px rgba(255, 138, 61, 0.18);
}

.subscribe-step.is-active .subscribe-step__num {
  color: var(--orange);
}

.rail-clock {
  margin-top: auto;
  text-align: center;
}

.rail-clock__label {
  display: block;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.16em;
}

.rail-clock time {
  display: block;
  color: var(--neon);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.rail-legal {
  color: var(--muted);
  font-size: 9px;
  line-height: 1.5;
  text-align: center;
}

.header-main {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 10, 18, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  z-index: 2;
  height: 2px;
  background: linear-gradient(90deg, var(--neon), var(--violet), var(--orange));
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
}

.status-strip {
  overflow-x: auto;
  background: var(--grid);
  border-bottom: 1px solid rgba(42, 58, 92, 0.7);
  scrollbar-width: none;
}

.status-strip::-webkit-scrollbar {
  display: none;
}

.status-strip__track {
  display: flex;
  gap: 28px;
  padding: 7px clamp(20px, 4vw, 56px);
  color: var(--muted);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.status-strip__track span::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 10px rgba(53, 240, 214, 0.6);
  vertical-align: middle;
}

.header-bar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
  min-height: 68px;
  padding: 12px clamp(20px, 4vw, 56px);
}

.primary-nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.primary-nav__list a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 12px;
  border: 1px solid transparent;
  border-radius: 10px;
  color: var(--muted);
  font-size: 14px;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease, transform 0.15s ease;
}

.primary-nav__list a:hover,
.primary-nav__list a:focus-visible {
  color: var(--neon);
  border-color: rgba(53, 240, 214, 0.4);
  background: rgba(53, 240, 214, 0.06);
  transform: translateY(-2px);
}

.primary-nav__list a[aria-current="page"] {
  color: var(--neon);
  border-color: rgba(53, 240, 214, 0.65);
  background: rgba(53, 240, 214, 0.08);
  box-shadow: 0 0 18px rgba(53, 240, 214, 0.12);
}

.primary-nav__list a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: var(--neon);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--orange);
  border-radius: 12px;
  background: var(--orange);
  color: #061018;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.02em;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.header-cta:hover,
.header-cta:focus-visible {
  background: #ff9f5e;
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px var(--orange), 0 12px 24px rgba(255, 138, 61, 0.18);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel-high);
  color: var(--text);
}

.nav-toggle__lines,
.nav-toggle__lines::before,
.nav-toggle__lines::after {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--neon);
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.nav-toggle__lines {
  position: relative;
}

.nav-toggle__lines::before,
.nav-toggle__lines::after {
  content: "";
  position: absolute;
  left: 0;
}

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

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

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

.nav-toggle[aria-expanded="true"] .nav-toggle__lines::before {
  top: 0;
  transform: rotate(-90deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__lines::after {
  opacity: 0;
}

.site-footer {
  background: linear-gradient(180deg, var(--panel), #080E1B);
  border-top: 1px solid var(--line);
  color: var(--text);
}

.footer-status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding: 14px clamp(20px, 4vw, 56px);
  border-bottom: 1px dashed var(--line);
  color: var(--muted);
  font-family: var(--font-num);
  font-size: 12px;
}

.footer-status__label {
  color: var(--orange);
  letter-spacing: 0.08em;
}

.footer-status__value {
  color: var(--muted);
}

.footer-shell {
  max-width: 1440px;
  margin: 0 auto;
  padding: clamp(36px, 6vw, 72px) clamp(20px, 4vw, 56px) 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: clamp(24px, 4vw, 48px);
}

.footer-brand__mark {
  display: inline-block;
  color: var(--neon);
  font-family: var(--font-head);
  font-size: 26px;
  font-weight: 900;
  letter-spacing: -0.04em;
  text-shadow: 0 0 18px rgba(53, 240, 214, 0.25);
}

.footer-brand__sub {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.footer-meta {
  margin-top: 16px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}

.footer-col__title {
  margin-bottom: 14px;
  color: var(--text);
  font-size: 16px;
  letter-spacing: 0.02em;
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  display: inline-block;
  color: var(--muted);
  font-size: 14px;
  transition: color 0.15s ease, transform 0.15s ease;
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--neon);
  transform: translateX(3px);
}

.footer-contact {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px 24px;
  margin-top: clamp(28px, 4vw, 48px);
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.footer-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.footer-contact__label {
  color: var(--neon);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.footer-contact__value {
  color: var(--text);
  font-family: var(--font-num);
}

.copy-btn {
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-high);
  color: var(--muted);
  font-size: 12px;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}

.copy-btn:hover,
.copy-btn:focus-visible {
  border-color: var(--neon);
  color: var(--neon);
}

.copy-btn.is-copied {
  border-color: var(--orange);
  background: rgba(255, 138, 61, 0.1);
  color: var(--orange);
}

.footer-legal {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.8;
}

.footer-closing {
  margin-top: 8px;
  color: var(--orange);
  font-family: var(--font-num);
}

.page-shell {
  width: min(1440px, calc(100% - 40px));
  margin-inline: auto;
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(16px, 2vw, 32px);
}

.content-main {
  grid-column: span 7;
}

.content-aside {
  grid-column: span 4;
}

.stack > * + * {
  margin-top: var(--stack-gap, 24px);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.eyebrow {
  color: var(--neon);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.divider-neon {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon), var(--violet), transparent);
  opacity: 0.7;
}

.panel {
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.panel--high {
  background: var(--panel-high);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel-high);
  color: var(--text);
  font-weight: 700;
  transition: transform 0.15s ease, border-color 0.15s ease, color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover,
.btn:focus-visible {
  border-color: var(--neon);
  color: var(--neon);
  transform: translateY(-2px);
}

.btn--primary {
  border-color: var(--orange);
  background: var(--orange);
  color: #061018;
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: #ff9f5e;
  color: #061018;
  box-shadow: 0 12px 24px rgba(255, 138, 61, 0.18);
}

.btn--ghost {
  border-color: rgba(53, 240, 214, 0.45);
  background: transparent;
  color: var(--neon);
}

.btn--quiet {
  border-color: transparent;
  background: transparent;
  color: var(--muted);
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-high);
  color: var(--muted);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.02em;
}

.tag--cyan {
  border-color: rgba(53, 240, 214, 0.45);
  background: rgba(53, 240, 214, 0.08);
  color: var(--neon);
}

.tag--violet {
  border-color: rgba(124, 92, 255, 0.5);
  background: rgba(124, 92, 255, 0.1);
  color: #B8A8FF;
}

.tag--orange {
  border-color: rgba(255, 138, 61, 0.5);
  background: rgba(255, 138, 61, 0.08);
  color: var(--orange);
}

.exhibit-label {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 12px 10px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  color: var(--muted);
  font-size: 12px;
}

.exhibit-label::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: 10px 10px 0 0;
  background: linear-gradient(90deg, var(--neon), var(--violet));
}

.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-high);
}

.media-frame img,
.media-frame video,
.media-frame canvas {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.media-frame--square {
  aspect-ratio: 1 / 1;
}

.breadcrumbs {
  margin-bottom: 20px;
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-family: var(--font-num);
  font-size: 12px;
}

.breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.breadcrumbs__link {
  color: var(--muted);
}

.breadcrumbs__link:hover,
.breadcrumbs__link:focus-visible {
  color: var(--neon);
}

.reveal {
  opacity: 0;
}

.reveal.is-visible {
  opacity: 1;
  transition: opacity 0.12s linear;
}

@media (max-width: 960px) {
  body {
    padding-left: 0;
  }

  .brand-rail {
    position: relative;
    inset: auto;
    z-index: 120;
    width: 100%;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
    padding: 10px 16px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .brand-mark {
    flex-direction: row;
    align-items: baseline;
    gap: 4px;
  }

  .brand-mark__num {
    font-size: 22px;
  }

  .brand-sub {
    max-width: 140px;
    margin: 0;
    font-size: 11px;
    writing-mode: horizontal-tb;
  }

  .device-switch {
    flex-direction: row;
    width: auto;
    margin-left: auto;
  }

  .device-switch__btn {
    padding: 6px 10px;
  }

  .subscribe-steps {
    flex-direction: row;
    gap: 4px;
    width: auto;
  }

  .subscribe-step {
    flex-direction: row;
    padding: 5px 7px;
  }

  .subscribe-step__num {
    display: none;
  }

  .rail-clock,
  .rail-legal {
    display: none;
  }

  .header-main {
    position: sticky;
    top: 0;
  }

  .header-bar {
    justify-content: space-between;
    min-height: 60px;
    padding: 10px 16px;
  }

  .primary-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 200;
    max-height: 76vh;
    overflow: auto;
    background: linear-gradient(180deg, var(--panel), var(--bg));
    border-top: 1px solid var(--neon);
    box-shadow: 0 -18px 40px rgba(0, 0, 0, 0.45);
    transform: translateY(100%);
    transition: transform 0.2s ease;
  }

  .primary-nav[data-open] {
    transform: translateY(0);
  }

  .primary-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 18px 16px 24px;
  }

  .primary-nav__list a {
    justify-content: flex-start;
    min-height: 48px;
    padding: 0 14px;
    border-color: var(--line);
    background: var(--panel-high);
    font-size: 16px;
  }

  .primary-nav__list a[aria-current="page"]::after {
    left: 14px;
    right: auto;
    bottom: 10px;
    width: 22px;
  }

  .header-cta {
    min-height: 40px;
    padding: 0 12px;
    font-size: 13px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .grid-12 {
    grid-template-columns: 1fr;
  }

  .content-main,
  .content-aside {
    grid-column: 1 / -1;
  }

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

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

  .footer-contact {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

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

  .header-cta {
    display: none;
  }
}

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

  .primary-nav {
    transition: none;
  }

  .reveal {
    opacity: 1 !important;
  }
}