:root {
  --xk-bg-deep: #0B1220;
  --xk-bg-indigo: #1B1B4B;
  --xk-bg-teal: #123B3E;
  --xk-bg-maroon: #4A1E2E;
  --xk-text-silver: #E6E8ED;
  --xk-text-pearl: #F2F3F5;
  --xk-accent-orange: #FF7A1A;
  --xk-accent-cyan: #53D8FB;
  --xk-accent-gold: #C9A227;
  --xk-border: rgba(230, 232, 237, 0.12);
  --xk-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  --xk-font-head: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --xk-font-body: 'Noto Serif SC', 'Songti SC', 'STSong', 'SimSun', Georgia, serif;
  --xk-radius: 14px;
  --xk-container-max: 1200px;
  --xk-header-offset: 96px;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  background-color: var(--xk-bg-deep);
  background-image:
    radial-gradient(1px 1px at 12% 25%, rgba(83, 216, 251, 0.5), transparent),
    radial-gradient(1px 1px at 78% 12%, rgba(201, 162, 39, 0.42), transparent),
    radial-gradient(1px 1px at 68% 55%, rgba(230, 232, 237, 0.3), transparent),
    radial-gradient(1px 1px at 24% 72%, rgba(255, 122, 26, 0.28), transparent),
    radial-gradient(1px 1px at 52% 42%, rgba(83, 216, 251, 0.32), transparent),
    radial-gradient(1px 1px at 88% 86%, rgba(201, 162, 39, 0.36), transparent),
    radial-gradient(1px 1px at 38% 32%, rgba(230, 232, 237, 0.38), transparent),
    radial-gradient(1px 1px at 64% 76%, rgba(83, 216, 251, 0.26), transparent);
  color: var(--xk-text-silver);
  font-family: var(--xk-font-body);
  font-size: 1rem;
  line-height: 1.7;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  padding-top: var(--xk-header-offset);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 18% 30%, rgba(83, 216, 251, 0.45), transparent),
    radial-gradient(1px 1px at 74% 70%, rgba(201, 162, 39, 0.32), transparent),
    radial-gradient(1px 1px at 43% 84%, rgba(255, 122, 26, 0.28), transparent),
    radial-gradient(1px 1px at 62% 16%, rgba(230, 232, 237, 0.4), transparent);
}

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

a {
  color: var(--xk-accent-cyan);
  transition: color 0.2s ease;
}

a:hover {
  color: var(--xk-text-pearl);
}

ul,
ol {
  padding-left: 1.2em;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--xk-font-head);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--xk-text-pearl);
  margin-bottom: 0.5em;
}

h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}

h2 {
  font-size: clamp(1.3rem, 3vw, 1.8rem);
}

h3 {
  font-size: 1.15rem;
}

p {
  margin-bottom: 1em;
}

button {
  font-family: inherit;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--xk-accent-cyan);
  outline-offset: 2px;
  border-radius: 4px;
}

.xk-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;
}

.xk-container {
  width: 100%;
  max-width: var(--xk-container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.xk-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 12px 16px;
  display: flex;
  justify-content: center;
  pointer-events: none;
}

.xk-progress-wrap {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  overflow: hidden;
  background: rgba(230, 232, 237, 0.06);
}

.xk-progress {
  display: block;
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--xk-accent-cyan), var(--xk-accent-orange));
  transition: width 0.12s linear;
}

.xk-skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  background: var(--xk-accent-cyan);
  color: var(--xk-bg-deep);
  padding: 10px 18px;
  border-radius: 10px;
  font-family: var(--xk-font-head);
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  z-index: 200;
  transition: top 0.2s ease;
  pointer-events: auto;
}

.xk-skip-link:focus {
  top: 12px;
  outline: 2px solid var(--xk-text-pearl);
  outline-offset: 2px;
}

.xk-nav-capsule {
  position: relative;
  width: 100%;
  max-width: 1240px;
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(11, 18, 32, 0.9);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid var(--xk-border);
  border-radius: 48px;
  padding: 8px 10px 8px 18px;
  box-shadow: var(--xk-shadow), inset 0 0 0 1px rgba(83, 216, 251, 0.06);
  pointer-events: auto;
}

.xk-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.xk-brand-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  text-decoration: none;
  white-space: nowrap;
}

.xk-brand-link::before {
  content: '';
  width: 10px;
  height: 10px;
  background: var(--xk-accent-cyan);
  border-radius: 2px;
  transform: rotate(45deg);
  box-shadow: 0 0 12px rgba(83, 216, 251, 0.6);
  flex: none;
}

.xk-brand-name {
  font-family: var(--xk-font-head);
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
  color: var(--xk-text-pearl);
}

.xk-brand-slogan {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--xk-text-pearl);
  letter-spacing: 0.08em;
  padding-left: 12px;
  margin-left: 2px;
  border-left: 1px solid var(--xk-border);
  white-space: nowrap;
}

.xk-nav {
  margin-left: auto;
}

.xk-nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.xk-nav-link {
  display: block;
  padding: 8px 13px;
  border-radius: 24px;
  color: var(--xk-text-silver);
  font-family: var(--xk-font-head);
  font-weight: 700;
  font-size: 0.88rem;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease, opacity 0.2s ease;
}

.xk-nav-link:hover {
  background: rgba(230, 232, 237, 0.08);
  color: var(--xk-text-pearl);
}

.xk-nav-link[aria-current="page"] {
  background: var(--xk-accent-cyan);
  color: var(--xk-bg-deep);
}

.xk-cta {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--xk-accent-orange);
  color: #fff;
  border-radius: 32px;
  padding: 9px 18px;
  font-family: var(--xk-font-head);
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  white-space: nowrap;
  flex: none;
  transition: background 0.2s ease, transform 0.2s ease;
}

.xk-cta:hover {
  background: #ff8b3d;
  color: #fff;
  transform: translateY(-1px);
}

.xk-cta:active {
  transform: translateY(0);
}

.xk-cta-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
  animation: xk-pulse 2s ease-out infinite;
}

@keyframes xk-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.5);
  }
  50% {
    box-shadow: 0 0 0 5px rgba(255, 255, 255, 0);
  }
}

.xk-nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  flex: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: transparent;
  border: 1px solid var(--xk-border);
  border-radius: 12px;
  padding: 0;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.xk-nav-toggle:hover {
  background: rgba(230, 232, 237, 0.06);
  border-color: rgba(230, 232, 237, 0.25);
}

.xk-toggle-line {
  width: 18px;
  height: 2px;
  border-radius: 1px;
  background: var(--xk-text-silver);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.xk-nav-toggle[data-open] .xk-toggle-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.xk-nav-toggle[data-open] .xk-toggle-line:nth-child(2) {
  opacity: 0;
}

.xk-nav-toggle[data-open] .xk-toggle-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.xk-footer {
  position: relative;
  margin-top: auto;
  padding: 56px 0 24px;
  background: #060B14;
  border-top: 1px solid var(--xk-border);
  overflow: hidden;
}

.xk-footer::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -80px;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(83, 216, 251, 0.08), transparent 70%);
  pointer-events: none;
}

.xk-footer::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 15%;
  right: 15%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(83, 216, 251, 0.2), transparent);
  pointer-events: none;
}

.xk-footer-inner {
  position: relative;
  z-index: 1;
  max-width: var(--xk-container-max);
  margin: 0 auto;
  padding: 0 20px;
}

.xk-footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.xk-footer-brand-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--xk-font-head);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  color: var(--xk-text-pearl);
  text-decoration: none;
}

.xk-footer-brand-link::before {
  content: '◆';
  color: var(--xk-accent-cyan);
  font-size: 0.8em;
  text-shadow: 0 0 10px rgba(83, 216, 251, 0.6);
}

.xk-footer-brand-link:hover {
  color: var(--xk-text-pearl);
}

.xk-footer-slogan {
  margin: 10px 0 14px;
  font-family: var(--xk-font-head);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--xk-accent-orange);
}

.xk-footer-trust {
  font-size: 0.86rem;
  color: var(--xk-text-pearl);
  max-width: 380px;
  line-height: 1.65;
  margin-bottom: 0;
}

.xk-footer-col {
  min-width: 0;
}

.xk-footer-title {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--xk-text-pearl);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--xk-border);
}

.xk-footer-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.xk-footer-list a,
.xk-footer-list span {
  display: inline-block;
  color: var(--xk-text-silver);
  font-size: 0.9rem;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.2s ease, transform 0.2s ease;
}

.xk-footer-list a:hover {
  color: var(--xk-accent-cyan);
  transform: translateX(2px);
}

.xk-footer-list span {
  color: var(--xk-text-pearl);
  opacity: 0.8;
}

.xk-footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  border-top: 1px solid var(--xk-border);
  padding-top: 20px;
  font-size: 0.8rem;
  color: var(--xk-text-pearl);
}

.xk-footer-bottom p {
  margin-bottom: 0;
}

.xk-footer-icp {
  letter-spacing: 0.06em;
  opacity: 0.75;
}

.xk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--xk-accent-orange);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 12px 24px;
  font-family: var(--xk-font-head);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.xk-btn:hover {
  background: #ff8b3d;
  color: #fff;
  transform: translateY(-1px);
}

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

.xk-btn--secondary {
  background: transparent;
  border: 1px solid var(--xk-text-silver);
  color: var(--xk-text-silver);
}

.xk-btn--secondary:hover {
  background: rgba(230, 232, 237, 0.08);
  color: var(--xk-text-pearl);
}

.xk-btn--ghost {
  background: rgba(83, 216, 251, 0.1);
  border: 1px solid rgba(83, 216, 251, 0.4);
  color: var(--xk-accent-cyan);
}

.xk-btn--ghost:hover {
  background: rgba(83, 216, 251, 0.18);
  color: var(--xk-accent-cyan);
}

.xk-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 0;
  margin: 0 0 32px;
  list-style: none;
  font-family: var(--xk-font-head);
  font-size: 0.82rem;
}

.xk-breadcrumb li + li::before {
  content: '›';
  color: var(--xk-text-pearl);
  margin-right: 6px;
  opacity: 0.7;
}

.xk-breadcrumb a {
  color: var(--xk-accent-cyan);
  text-decoration: none;
}

.xk-breadcrumb a:hover {
  color: var(--xk-text-pearl);
 text-decoration: underline;
}

.xk-breadcrumb [aria-current="page"] {
  color: var(--xk-text-pearl);
  font-weight: 700;
}

.xk-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .xk-grid-2,
  .xk-grid-3,
  .xk-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

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

.xk-img-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--xk-radius);
  border: 1px solid var(--xk-border);
  background:
    linear-gradient(135deg, transparent, rgba(83, 216, 251, 0.08)),
    var(--xk-bg-indigo);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--xk-shadow);
}

.xk-img-frame[data-caption]::after {
  content: attr(data-caption);
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 30px 14px 10px;
  background: linear-gradient(0deg, rgba(11, 18, 32, 0.88), transparent);
  font-family: var(--xk-font-head);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--xk-text-silver);
  letter-spacing: 0.02em;
  pointer-events: none;
}

.xk-img-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: relative;
  z-index: 1;
}

@media (max-width: 1024px) {
  .xk-footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .xk-brand-slogan {
    display: none;
  }
}

@media (max-width: 767px) {
  :root {
    --xk-header-offset: 84px;
  }

  .xk-header {
    padding: 10px 12px;
  }

  .xk-nav-capsule {
    border-radius: 32px;
    padding: 6px 8px 6px 14px;
    gap: 8px;
  }

  .xk-brand-name {
    font-size: 1.15rem;
  }

  .xk-cta {
    display: none;
  }

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

  .xk-nav {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    margin-left: 0;
    padding: 12px;
    background: rgba(11, 18, 32, 0.97);
    border: 1px solid var(--xk-border);
    border-radius: 18px;
    box-shadow: var(--xk-shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0s linear 0.25s;
    pointer-events: none;
  }

  .xk-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition-delay: 0s;
    pointer-events: auto;
  }

  .xk-nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .xk-nav-link {
    text-align: center;
    padding: 12px 16px;
    font-size: 0.95rem;
  }

  .xk-footer {
    padding-top: 40px;
  }

  .xk-footer-main {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .xk-footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .xk-img-frame {
    aspect-ratio: 16 / 10;
  }
}

@media (max-width: 480px) {
  .xk-container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .xk-nav-capsule {
    border-radius: 28px;
  }
}

@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;
    transition-delay: 0s !important;
  }

  .xk-cta-dot {
    animation: none;
  }
}