:root {
  --color-bg-deep: #0A0A0F;
  --color-bg-panel: #101020;
  --color-bg-card: #1A1A24;
  --color-gold: #F5B62F;
  --color-gold-bright: #FFD700;
  --color-gold-dim: #B8860B;
  --color-purple: #7B2FBE;
  --color-violet: #9D4EDD;
  --color-cyan: #00E5FF;
  --color-text: #F5F5F5;
  --color-text-dim: #C0C0C0;
  --color-text-muted: #8A8A9E;
  --color-border: rgba(245, 182, 47, 0.25);
  --color-border-strong: rgba(245, 182, 47, 0.5);
  --font-display: "FZLanTingHeiS-B-GB", "Arial Black", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Source Sans Pro", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-data: "Fira Code", "Courier New", monospace;
  --shadow-gold: 0 0 24px rgba(245, 182, 47, 0.18);
  --shadow-panel: 0 20px 60px rgba(0, 0, 0, 0.55);
  --header-height: 72px;
  --nav-width: 280px;
  --radius: 2px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  overflow-wrap: break-word;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--color-bg-deep);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(245, 182, 47, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 182, 47, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: linear-gradient(to bottom, black, transparent 90%);
}

body::after {
  content: "";
  position: fixed;
  top: 16%;
  left: 68%;
  width: 360px;
  height: 360px;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 35% 35%, rgba(123, 47, 190, 0.22), transparent 65%),
    radial-gradient(circle at 70% 70%, rgba(245, 182, 47, 0.16), transparent 60%);
  filter: blur(6px);
  animation: drift 18s ease-in-out infinite;
}

@keyframes drift {
  0%, 100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(28px, -18px, 0) scale(1.06);
  }
}

main,
#main-content {
  display: block;
  position: relative;
  z-index: 1;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
}

.site-footer {
  position: relative;
  z-index: 1;
  margin-left: 0;
  border-top: 2px solid var(--color-border-strong);
  background: linear-gradient(180deg, var(--color-bg-panel), var(--color-bg-deep));
}

h1,
h2,
h3,
h4 {
  margin: 0 0 0.5em;
  color: var(--color-text);
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

p {
  margin: 0 0 1em;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

button {
  font-family: inherit;
}

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

a:hover {
  color: var(--color-gold);
}

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--color-cyan);
  outline-offset: 2px;
}

::selection {
  background: var(--color-gold);
  color: var(--color-bg-deep);
}

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

.skip-link {
  position: fixed;
  top: 12px;
  left: 50%;
  z-index: 500;
  padding: 10px 18px;
  background: var(--color-gold-bright);
  color: var(--color-bg-deep);
  font-weight: 700;
  border-radius: var(--radius);
  box-shadow: 0 0 30px rgba(245, 182, 47, 0.45);
  transform: translate(-50%, -300%);
}

.skip-link:focus {
  transform: translate(-50%, 0);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 400;
  pointer-events: none;
  background: linear-gradient(90deg, var(--color-gold-bright), var(--color-purple), var(--color-cyan));
  transform: scaleX(0);
  transform-origin: left;
}

.header-bar {
  min-height: var(--header-height);
  padding: 10px 16px;
  border-bottom: 2px solid var(--color-border-strong);
  background: rgba(10, 10, 15, 0.86);
  backdrop-filter: blur(16px);
}

.header-bar__inner {
  width: min(100%, 1560px);
  margin-left: auto;
  margin-right: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--color-gold-bright), var(--color-gold-dim));
  border: 2px solid var(--color-bg-deep);
  box-shadow:
    0 0 0 2px rgba(245, 182, 47, 0.5),
    0 0 24px rgba(245, 182, 47, 0.22);
  color: var(--color-bg-deep);
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 900;
  line-height: 1;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  background: linear-gradient(135deg, var(--color-gold-bright) 0%, var(--color-gold-dim) 45%, var(--color-gold) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--color-gold);
}

.header-controls {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  min-width: 0;
}

.region-switcher-wrap {
  position: relative;
}

.region-switcher {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 6px 12px;
  border: 2px solid var(--color-purple);
  border-radius: var(--radius);
  background: var(--color-bg-panel);
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.region-switcher:hover,
.region-switcher[aria-expanded="true"] {
  border-color: var(--color-gold);
  box-shadow: var(--shadow-gold);
}

.region-switcher__label {
  color: var(--color-text-muted);
  font-size: 0.82rem;
}

.region-switcher__value {
  font-family: var(--font-data);
  color: var(--color-gold);
}

.region-switcher__caret {
  color: var(--color-cyan);
  font-size: 0.8em;
}

.region-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 60;
  display: grid;
  gap: 4px;
  width: 180px;
  padding: 6px;
  background: var(--color-bg-panel);
  border: 2px solid var(--color-border-strong);
  box-shadow: var(--shadow-panel);
  transform: rotate(-2deg) translateY(8px);
  transform-origin: top right;
  opacity: 0;
  visibility: hidden;
  transition: transform 0.25s ease, opacity 0.25s ease, visibility 0.25s ease;
}

.region-menu[data-open] {
  transform: rotate(0deg) translateY(0);
  opacity: 1;
  visibility: visible;
}

.region-option {
  display: block;
  width: 100%;
  padding: 9px 12px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--color-text-dim);
  text-align: left;
  font-size: 0.92rem;
  cursor: pointer;
}

.region-option:hover,
.region-option[aria-selected="true"] {
  color: var(--color-gold);
  border-color: rgba(245, 182, 47, 0.3);
  background: rgba(245, 182, 47, 0.08);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  padding: 8px 16px;
  border: 2px solid transparent;
  border-radius: var(--radius);
  font-size: 0.92rem;
  font-weight: 700;
  font-family: var(--font-body);
  color: var(--color-text);
  background: transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

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

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

.btn--gold {
  background: linear-gradient(135deg, var(--color-gold-bright), var(--color-gold-dim));
  border-color: var(--color-gold);
  color: var(--color-bg-deep);
  box-shadow: 0 0 18px rgba(245, 182, 47, 0.2);
}

.btn--gold:hover {
  box-shadow: 0 8px 28px rgba(245, 182, 47, 0.32);
}

.btn--purple {
  background: var(--color-purple);
  border-color: var(--color-violet);
  color: #fff;
}

.btn--purple:hover {
  background: var(--color-violet);
}

.btn--ghost {
  background: transparent;
  border-color: var(--color-border-strong);
  color: var(--color-text);
}

.btn--ghost:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: var(--color-bg-panel);
  border: 2px solid var(--color-purple);
  border-radius: var(--radius);
  cursor: pointer;
}

.nav-toggle__line {
  width: 20px;
  height: 2px;
  background: var(--color-text);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) {
  transform: translateY(7px) 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(-7px) rotate(-45deg);
}

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  width: min(280px, 86vw);
  padding: 24px 20px 20px;
  background:
    linear-gradient(180deg, rgba(245, 182, 47, 0.04), transparent 40%),
    #0E0E18;
  border-right: 2px solid var(--color-border-strong);
  transform: translateX(-100%);
  visibility: hidden;
  transition: transform 0.3s ease, visibility 0.3s ease;
}

.site-nav[data-open] {
  transform: translateX(0);
  visibility: visible;
  box-shadow: 24px 0 60px rgba(0, 0, 0, 0.5);
}

.nav-brand {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 4px 4px 18px;
  margin-bottom: 12px;
  border-bottom: 1px dashed rgba(245, 182, 47, 0.25);
}

.nav-brand__number {
  font-family: var(--font-data);
  font-size: 1.25rem;
  color: var(--color-gold);
}

.nav-brand__symbol {
  font-family: var(--font-display);
  font-size: 2rem;
  line-height: 1;
  color: rgba(245, 182, 47, 0.35);
}

.nav-list {
  display: grid;
  gap: 4px;
  list-style: none;
}

.nav-item {
  min-width: 0;
}

.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 18px 12px 16px;
  border-left: 2px solid transparent;
  color: var(--color-text-dim);
  font-weight: 600;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.nav-link:hover {
  color: var(--color-text);
  background: rgba(245, 182, 47, 0.06);
  border-left-color: var(--color-cyan);
}

.nav-link::after {
  content: "→";
  position: absolute;
  right: 14px;
  color: var(--color-cyan);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.nav-link:hover::after,
.nav-link[aria-current="page"]::after {
  opacity: 1;
  transform: translateX(0);
}

.nav-link[aria-current="page"] {
  color: var(--color-gold);
  background: linear-gradient(90deg, rgba(245, 182, 47, 0.14), rgba(123, 47, 190, 0.06));
  border-left-color: var(--color-gold);
}

.nav-link__index {
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--color-cyan);
  opacity: 0.75;
}

.nav-note {
  margin: auto 0 0;
  padding-top: 16px;
  border-top: 1px dashed rgba(255, 255, 255, 0.12);
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

.content-container {
  width: min(100% - 32px, 1560px);
  margin-left: auto;
  margin-right: auto;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-cyan);
  font-family: var(--font-data);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.section-label::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--color-gold);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 0;
  list-style: none;
  font-size: 0.85rem;
}

.breadcrumb__item {
  color: var(--color-text-muted);
}

.breadcrumb__item:not(:last-child)::after {
  content: "/";
  margin-left: 8px;
  color: var(--color-gold);
}

.breadcrumb__link {
  color: var(--color-text-muted);
}

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

.grid {
  display: grid;
  gap: 24px;
}

.grid__item {
  min-width: 0;
}

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

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

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

.card {
  padding: clamp(16px, 3vw, 28px);
  background: linear-gradient(145deg, var(--color-bg-card), #14141E);
  border: 2px solid rgba(245, 182, 47, 0.14);
  box-shadow: var(--shadow-panel);
}

.card--tilt,
.panel-tilt {
  transform: rotate(-2deg);
}

.data-number {
  font-family: var(--font-data);
  font-size: clamp(2rem, 5vw, 4rem);
  color: var(--color-cyan);
  line-height: 1;
}

.media-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border: 2px solid var(--color-border);
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, rgba(123, 47, 190, 0.16), rgba(245, 182, 47, 0.06)),
    repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.04) 0 2px, transparent 2px 10px);
}

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

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

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

.media-frame[data-caption]::after {
  content: attr(data-caption);
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 8px 12px;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.72));
  color: var(--color-text);
  font-size: 0.78rem;
}

.data-table {
  width: 100%;
  margin: 16px 0;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.data-table caption {
  caption-side: top;
  padding: 8px 0;
  text-align: left;
  color: var(--color-gold);
  font-family: var(--font-data);
}

.data-table th {
  padding: 12px;
  border: 1px solid rgba(245, 182, 47, 0.18);
  text-align: left;
  background: var(--color-bg-panel);
  color: var(--color-gold);
  font-family: var(--font-data);
  font-weight: 400;
}

.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--color-text);
}

.data-table tbody tr:hover {
  background: rgba(0, 229, 255, 0.04);
}

.data-table th[data-sort] {
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

.data-table th[data-sort]::after {
  content: " ↕";
  color: var(--color-cyan);
  font-size: 0.85em;
}

.data-table th[aria-sort="ascending"]::after {
  content: " ↑";
}

.data-table th[aria-sort="descending"]::after {
  content: " ↓";
}

.footer-inner {
  width: min(100% - 32px, 1560px);
  margin-left: auto;
  margin-right: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  padding: 56px 0 32px;
}

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

.brand--footer .brand-mark {
  width: 36px;
  height: 36px;
  font-size: 20px;
}

.brand--footer .brand-name {
  font-size: 1.1rem;
}

.footer-trust {
  margin: 16px 0 0;
  padding: 8px 0 8px 16px;
  border-left: 2px solid var(--color-gold);
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.footer-heading {
  margin: 0 0 14px;
  font-size: 0.9rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.footer-heading::after {
  content: "";
  display: block;
  width: 28px;
  height: 2px;
  margin-top: 6px;
  background: var(--color-purple);
}

.footer-links {
  display: grid;
  gap: 8px;
  list-style: none;
}

.footer-links a {
  color: var(--color-text-dim);
  font-size: 0.92rem;
}

.footer-links a:hover {
  color: var(--color-gold);
}

.footer-contact-list {
  display: grid;
  gap: 8px;
  list-style: none;
}

.footer-contact__line {
  color: var(--color-text-dim);
  font-size: 0.92rem;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 24px 0 32px;
  border-top: 1px dashed rgba(245, 182, 47, 0.25);
  text-align: center;
}

.footer-bottom p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.footer-icp {
  font-family: var(--font-data);
}

.to-top {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 38px;
  padding: 8px 14px;
  border: 2px solid var(--color-gold);
  border-radius: var(--radius);
  background: var(--color-bg-panel);
  color: var(--color-gold);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.to-top:hover {
  background: var(--color-gold);
  color: var(--color-bg-deep);
  box-shadow: var(--shadow-gold);
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

@media (min-width: 1024px) {
  .site-nav {
    width: var(--nav-width);
    transform: none;
    visibility: visible;
  }

  .nav-toggle {
    display: none;
  }

  .header-bar {
    margin-left: var(--nav-width);
  }

  #main-content,
  .site-footer {
    margin-left: var(--nav-width);
  }

  .footer-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
  }
}

@media (max-width: 1023.98px) {
  .nav-toggle {
    display: inline-flex;
  }

  body[data-nav-open="true"] {
    overflow: hidden;
  }
}

@media (max-width: 639px) {
  .header-bar {
    padding: 8px 12px;
  }

  .region-switcher__label {
    display: none;
  }

  .btn--gold {
    padding: 8px 10px;
    font-size: 0.82rem;
  }

  .brand-name {
    font-size: 1rem;
  }

  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
}

@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;
  }

  body::after {
    animation: none;
  }

  .card--tilt,
  .panel-tilt {
    transform: none;
  }
}