@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700;900&family=ZCOOL+XiaoWei&display=swap");

:root {
  --pkx-ink: #071018;
  --pkx-deep: #0d1b2a;
  --pkx-panel: rgba(14, 28, 42, 0.72);
  --pkx-line: rgba(126, 214, 223, 0.28);
  --pkx-mint: #2ee6c7;
  --pkx-coral: #ff6f91;
  --pkx-gold: #f6c945;
  --pkx-fog: #d7eef2;
  --pkx-mute: #9bb6c2;
  --pkx-radius: 22px;
  --pkx-nav-h: 64px;
  --pkx-dock-h: auto;
  --pkx-max: 1120px;
  --pkx-font-display: "ZCOOL XiaoWei", "Noto Sans SC", sans-serif;
  --pkx-font-body: "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--pkx-font-body);
  color: var(--pkx-fog);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(46, 230, 199, 0.18), transparent 55%),
    radial-gradient(ellipse 70% 45% at 95% 5%, rgba(255, 111, 145, 0.16), transparent 50%),
    radial-gradient(ellipse 60% 40% at 50% 100%, rgba(246, 201, 69, 0.08), transparent 60%),
    linear-gradient(165deg, #050b12 0%, #0d1b2a 45%, #0a1520 100%);
  background-attachment: fixed;
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
}

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

a {
  color: var(--pkx-mint);
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

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

.pkx-wrap {
  width: min(100% - 32px, var(--pkx-max));
  margin-inline: auto;
}

/* Promo icon strip */
.pkx-promo {
  position: relative;
  z-index: 40;
  background: linear-gradient(90deg, #123347, #1a2740 40%, #3a1d35);
  border-bottom: 1px solid var(--pkx-line);
  padding: 10px 0 8px;
}

.pkx-promo-label {
  margin: 0 0 8px;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--pkx-mute);
  text-align: center;
}

.pkx-promo-grid,
.pkx-dock-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px 8px;
  justify-items: center;
  padding-bottom: 4px;
}

.pkx-dock-item {
  width: 70px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-align: center;
  color: var(--pkx-mute) !important;
  font-size: 0.68rem;
  text-decoration: none;
}

.pkx-dock-item img {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  object-fit: cover;
  background: #fff;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.28);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.pkx-dock-item:hover {
  color: var(--pkx-fog) !important;
}

.pkx-dock-item:hover img {
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 12px 22px rgba(46, 230, 199, 0.25);
}

.pkx-dock-item span {
  display: block;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Nav */
.pkx-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(7, 16, 24, 0.78);
  border-bottom: 1px solid var(--pkx-line);
  height: var(--pkx-nav-h);
}

.pkx-nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.pkx-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--pkx-fog) !important;
  font-family: var(--pkx-font-display);
  font-size: 1.35rem;
  letter-spacing: 0.04em;
}

.pkx-brand img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 0 0 2px rgba(46, 230, 199, 0.35);
}

.pkx-nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.pkx-nav-links a {
  display: block;
  padding: 8px 12px;
  border-radius: 10px;
  color: var(--pkx-mute);
  font-size: 0.92rem;
}

.pkx-nav-links a:hover,
.pkx-nav-links a.is-current {
  color: var(--pkx-fog);
  background: rgba(46, 230, 199, 0.1);
}

.pkx-nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--pkx-line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
  padding: 0;
}

.pkx-nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--pkx-fog);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.pkx-nav-toggle.is-open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.pkx-nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.pkx-nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Sticky download dock */
.pkx-download-dock {
  position: sticky;
  top: var(--pkx-nav-h);
  z-index: 45;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transition: max-height 0.35s ease, opacity 0.25s ease;
  background: rgba(8, 18, 28, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--pkx-line);
}

.pkx-download-dock.is-visible {
  max-height: 280px;
  opacity: 1;
  pointer-events: auto;
}

.pkx-dock-label {
  margin: 0;
  padding: 8px 0 4px;
  font-size: 0.78rem;
  color: var(--pkx-mute);
  text-align: center;
}

.pkx-download-dock .pkx-dock-grid {
  padding: 0 0 10px;
}

body.pkx-dock-active .pkx-main {
  /* keep content readable under sticky layers */
}

/* Hero */
.pkx-hero {
  position: relative;
  padding: 48px 0 36px;
  overflow: hidden;
}

.pkx-hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto;
  height: 70%;
  background:
    radial-gradient(circle at 30% 40%, rgba(46, 230, 199, 0.22), transparent 45%),
    radial-gradient(circle at 70% 30%, rgba(255, 111, 145, 0.2), transparent 40%);
  animation: pkx-breathe 8s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes pkx-breathe {
  from {
    transform: scale(1) translateY(0);
    opacity: 0.85;
  }
  to {
    transform: scale(1.08) translateY(12px);
    opacity: 1;
  }
}

.pkx-hero-grid {
  position: relative;
  display: grid;
  gap: 28px;
  align-items: center;
}

.pkx-hero-brand {
  font-family: var(--pkx-font-display);
  font-size: clamp(2.6rem, 10vw, 4.2rem);
  line-height: 1.15;
  margin: 0 0 12px;
  background: linear-gradient(120deg, #fff 10%, var(--pkx-mint) 45%, var(--pkx-coral) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: pkx-title-shine 4.5s ease-in-out infinite;
}

@keyframes pkx-title-shine {
  0%,
  100% {
    filter: brightness(1);
  }
  50% {
    filter: brightness(1.15);
  }
}

.pkx-hero h1 {
  margin: 0 0 14px;
  font-size: clamp(1.35rem, 4.5vw, 1.85rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
}

.pkx-hero-lead {
  margin: 0;
  max-width: 36em;
  color: var(--pkx-mute);
  font-size: 1.02rem;
}

.pkx-hero-visual {
  position: relative;
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid var(--pkx-line);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  transform: perspective(900px) rotateY(-4deg);
  animation: pkx-float 5.5s ease-in-out infinite;
}

@keyframes pkx-float {
  0%,
  100% {
    transform: perspective(900px) rotateY(-4deg) translateY(0);
  }
  50% {
    transform: perspective(900px) rotateY(-2deg) translateY(-10px);
  }
}

.pkx-hero-visual img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  max-height: 520px;
}

/* Sections */
.pkx-section {
  padding: 42px 0;
}

.pkx-section-title {
  font-family: var(--pkx-font-display);
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin: 0 0 10px;
  color: #fff;
}

.pkx-section-desc {
  margin: 0 0 24px;
  color: var(--pkx-mute);
  max-width: 40em;
}

.pkx-prose p {
  margin: 0 0 1.1em;
  color: #c8dde5;
  font-size: 1rem;
}

.pkx-prose h2,
.pkx-prose h3 {
  color: #fff;
  margin: 1.6em 0 0.7em;
  line-height: 1.35;
}

.pkx-prose h2 {
  font-size: 1.45rem;
}

.pkx-prose h3 {
  font-size: 1.18rem;
}

/* Split media */
.pkx-split {
  display: grid;
  gap: 22px;
  align-items: center;
  margin: 28px 0;
}

.pkx-split.is-flip .pkx-split-media {
  order: -1;
}

.pkx-media-frame {
  border-radius: var(--pkx-radius);
  overflow: hidden;
  border: 1px solid var(--pkx-line);
  background: rgba(255, 255, 255, 0.03);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}

.pkx-media-frame img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  max-height: 460px;
  margin-inline: auto;
}

.pkx-glass {
  padding: 22px;
  border-radius: var(--pkx-radius);
  background: var(--pkx-panel);
  border: 1px solid var(--pkx-line);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* Cards */
.pkx-card-row {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

.pkx-feature-card {
  padding: 20px;
  border-radius: 18px;
  background: linear-gradient(160deg, rgba(46, 230, 199, 0.08), rgba(255, 111, 145, 0.06));
  border: 1px solid var(--pkx-line);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.pkx-feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(46, 230, 199, 0.5);
}

.pkx-feature-card h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  color: #fff;
}

.pkx-feature-card p {
  margin: 0;
  color: var(--pkx-mute);
  font-size: 0.95rem;
}

.pkx-mosaic {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr 1fr;
}

.pkx-mosaic-item {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--pkx-line);
  position: relative;
}

.pkx-mosaic-item img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.pkx-mosaic-item span {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px;
  font-size: 0.82rem;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.75));
  color: #fff;
}

/* Timeline */
.pkx-timeline {
  display: grid;
  gap: 16px;
  margin: 20px 0;
}

.pkx-timeline-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 12px;
  align-items: start;
}

.pkx-timeline-num {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  font-weight: 700;
  color: var(--pkx-ink);
  background: linear-gradient(135deg, var(--pkx-mint), #7be8ff);
}

.pkx-timeline-item h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
}

.pkx-timeline-item p {
  margin: 0;
  color: var(--pkx-mute);
  font-size: 0.95rem;
}

/* Quote band */
.pkx-quote-band {
  margin: 36px 0;
  padding: 28px 22px;
  border-radius: 24px;
  background:
    linear-gradient(120deg, rgba(255, 111, 145, 0.15), rgba(46, 230, 199, 0.12)),
    rgba(10, 20, 30, 0.8);
  border: 1px solid var(--pkx-line);
  text-align: center;
}

.pkx-quote-band p {
  margin: 0;
  font-family: var(--pkx-font-display);
  font-size: clamp(1.2rem, 3.5vw, 1.6rem);
  color: #fff;
  line-height: 1.5;
}

/* Breadcrumb */
.pkx-breadcrumb {
  padding: 18px 0 0;
  font-size: 0.88rem;
  color: var(--pkx-mute);
}

.pkx-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.pkx-breadcrumb li:not(:last-child)::after {
  content: "/";
  margin-left: 6px;
  color: rgba(155, 182, 194, 0.5);
}

.pkx-breadcrumb a {
  color: var(--pkx-mute);
}

.pkx-breadcrumb [aria-current="page"] {
  color: var(--pkx-fog);
}

/* Legal pages */
.pkx-legal {
  padding: 24px 0 64px;
}

.pkx-legal .pkx-glass {
  padding: 28px 22px;
}

.pkx-legal h1 {
  margin: 0 0 16px;
  font-size: clamp(1.5rem, 4vw, 2rem);
}

/* Error pages */
.pkx-error {
  min-height: 60vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 48px 0;
}

.pkx-error-code {
  font-family: var(--pkx-font-display);
  font-size: clamp(4rem, 18vw, 7rem);
  line-height: 1;
  margin: 0;
  background: linear-gradient(120deg, var(--pkx-coral), var(--pkx-mint));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.pkx-error h1 {
  margin: 8px 0 12px;
  font-size: 1.4rem;
}

.pkx-error p {
  margin: 0 0 22px;
  color: var(--pkx-mute);
}

.pkx-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--pkx-mint), #5ad0ff);
  color: #062018 !important;
  font-weight: 700;
}

.pkx-btn-soft {
  background: transparent;
  border: 1px solid var(--pkx-line);
  color: var(--pkx-fog) !important;
  margin-left: 8px;
}

/* Footer */
.pkx-footer {
  margin-top: 40px;
  padding: 36px 0 48px;
  border-top: 1px solid var(--pkx-line);
  background: rgba(0, 0, 0, 0.28);
}

.pkx-footer-grid {
  display: grid;
  gap: 24px;
}

.pkx-footer h2 {
  margin: 0 0 10px;
  font-size: 1rem;
  color: #fff;
}

.pkx-footer p,
.pkx-footer li {
  color: var(--pkx-mute);
  font-size: 0.9rem;
}

.pkx-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.pkx-footer-bottom {
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid rgba(126, 214, 223, 0.15);
  text-align: center;
  color: var(--pkx-mute);
  font-size: 0.84rem;
}

/* Reveal */
.pkx-reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.pkx-reveal.is-in {
  opacity: 1;
  transform: none;
}

.pkx-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0;
}

.pkx-chip {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--pkx-line);
  color: var(--pkx-mint);
  font-size: 0.8rem;
  background: rgba(46, 230, 199, 0.08);
}

.pkx-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 20px 0;
}

.pkx-stat {
  padding: 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--pkx-line);
  text-align: center;
}

.pkx-stat strong {
  display: block;
  font-size: 1.4rem;
  color: var(--pkx-gold);
  font-family: var(--pkx-font-display);
}

.pkx-stat span {
  font-size: 0.82rem;
  color: var(--pkx-mute);
}

@media (min-width: 768px) {
  .pkx-promo-grid,
  .pkx-dock-grid {
    grid-template-columns: repeat(8, minmax(0, 1fr));
  }

  .pkx-hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }

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

  .pkx-split.is-flip .pkx-split-media {
    order: 0;
  }

  .pkx-split.is-flip .pkx-split-copy {
    order: -1;
  }

  .pkx-card-row {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .pkx-footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }

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

  .pkx-media-frame img {
    max-height: 520px;
  }
}

@media (max-width: 767px) {
  .pkx-nav-toggle {
    display: grid;
    place-items: center;
  }

  .pkx-nav-links {
    position: absolute;
    top: var(--pkx-nav-h);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 16px 16px;
    background: rgba(7, 16, 24, 0.96);
    border-bottom: 1px solid var(--pkx-line);
  }

  .pkx-nav-links.is-open {
    display: flex;
  }

  .pkx-hero-visual {
    transform: none;
    max-width: 280px;
    margin-inline: auto;
  }

  @keyframes pkx-float {
    0%,
    100% {
      transform: translateY(0);
    }
    50% {
      transform: translateY(-8px);
    }
  }
}