*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:104px}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
h1,h2,h3,h4,h5,h6{font-family:var(--k8-display);font-weight:800;line-height:1.18;letter-spacing:-.02em}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
address{font-style:normal}

:root{
  --k8-ink-900:#0B1B33;
  --k8-ink-800:#12294A;
  --k8-paper:#F2F5F7;
  --k8-graphite:#1C2533;
  --k8-cyan:#36F0D0;
  --k8-cyan-dark:#0FA895;
  --k8-orange:#FF8A3D;
  --k8-orange-pale:#FFD2B3;
  --k8-violet:#7C5CFF;
  --k8-line:#8FA3B8;
  --k8-mist:rgba(143,163,184,.28);
  --k8-display:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --k8-body:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --k8-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --k8-wide:1420px;
  --k8-measure:44rem;
  --k8-r:2px;
}

body{
  display:flex;
  flex-direction:column;
  min-height:100vh;
  background:var(--k8-paper);
  color:var(--k8-graphite);
  font-family:var(--k8-body);
  font-size:17px;
  line-height:1.72;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

::selection{background:var(--k8-cyan);color:var(--k8-ink-900)}

:focus-visible{outline:2px solid var(--k8-violet);outline-offset:3px;border-radius:1px}
.k8-header :focus-visible,.k8-footer :focus-visible{outline-color:var(--k8-cyan)}

.k8-visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- skip link ---------- */
.k8-skip{
  position:absolute;
  left:14px;
  top:-72px;
  z-index:140;
  padding:10px 18px;
  background:var(--k8-cyan);
  color:var(--k8-ink-900);
  font-family:var(--k8-mono);
  font-size:13px;
  letter-spacing:.06em;
  border-radius:var(--k8-r);
  transition:top .18s ease;
}
.k8-skip:focus{top:12px}

/* ---------- header ---------- */
.k8-header{
  position:sticky;
  top:0;
  z-index:90;
  background-color:var(--k8-ink-900);
  background-image:repeating-linear-gradient(90deg,rgba(143,163,184,.07) 0 1px,transparent 1px 120px);
  color:var(--k8-paper);
  border-bottom:1px solid rgba(143,163,184,.26);
}
.k8-header__inner{
  max-width:var(--k8-wide);
  margin:0 auto;
  padding:0 clamp(16px,3vw,40px);
  min-height:78px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:clamp(16px,3vw,40px);
}
.k8-header__aside{display:flex;align-items:center;gap:16px}

.k8-brand{display:flex;align-items:center;gap:14px;min-width:0}
.k8-brand__track{
  display:block;
  width:3px;
  height:36px;
  flex:0 0 3px;
  background:linear-gradient(180deg,var(--k8-cyan) 0%,var(--k8-violet) 58%,var(--k8-orange) 100%);
}
.k8-brand__link{display:flex;flex-direction:column;justify-content:center;gap:3px;min-width:0}
.k8-brand__mark{
  font-family:var(--k8-mono);
  font-size:10.5px;
  line-height:1.2;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--k8-cyan);
  white-space:nowrap;
}
.k8-brand__name{
  font-family:var(--k8-display);
  font-size:clamp(16px,1.6vw,19px);
  font-weight:800;
  line-height:1.25;
  letter-spacing:-.01em;
  color:var(--k8-paper);
  white-space:nowrap;
}

.k8-nav{display:flex;align-items:center;gap:clamp(14px,2vw,32px)}
.k8-nav__list{display:flex;align-items:center;gap:clamp(12px,1.6vw,26px)}
.k8-nav__item{display:inline-flex}
.k8-nav__link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:78px;
  font-size:14.5px;
  letter-spacing:.02em;
  color:#C3D0DE;
  transition:color .18s ease,padding-left .18s ease;
}
.k8-nav__link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:transparent;
  transform:scaleX(.2);
  transform-origin:left center;
  transition:transform .22s ease,background-color .18s ease;
}
.k8-nav__link:hover{color:var(--k8-paper)}
.k8-nav__link:hover::after{background:var(--k8-cyan-dark);transform:scaleX(1)}
.k8-nav__link[aria-current="page"]{color:var(--k8-cyan)}
.k8-nav__link[aria-current="page"]::after{background:var(--k8-cyan);transform:scaleX(1)}
.k8-nav__utility{
  font-family:var(--k8-mono);
  font-size:12px;
  letter-spacing:.08em;
  padding:7px 12px;
  border:1px solid rgba(54,240,208,.5);
  border-radius:var(--k8-r);
  color:var(--k8-cyan);
  white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.k8-nav__utility:hover{background:var(--k8-cyan);border-color:var(--k8-cyan);color:var(--k8-ink-900)}

.k8-nav-toggle{display:none;align-items:center;gap:10px;min-height:44px;padding:0 2px;color:var(--k8-paper)}
.k8-nav-toggle__bars{display:grid;gap:4px;width:22px}
.k8-nav-toggle__bars span{display:block;height:2px;background:var(--k8-cyan);transition:transform .2s ease,opacity .2s ease}
.k8-nav-toggle.is-active .k8-nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.k8-nav-toggle.is-active .k8-nav-toggle__bars span:nth-child(2){opacity:0}
.k8-nav-toggle.is-active .k8-nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.k8-nav-toggle__text{font-family:var(--k8-mono);font-size:11px;letter-spacing:.16em;color:#9FB3C6}

.k8-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;pointer-events:none}
.k8-progress__bar{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--k8-cyan-dark) 0%,var(--k8-cyan) 62%,var(--k8-orange) 100%);
  transition:width .12s linear;
}

/* ---------- layout ---------- */
.k8-main{flex:1 0 auto;display:block}
.k8-shell{
  width:100%;
  max-width:var(--k8-wide);
  margin:0 auto;
  padding-left:clamp(16px,3vw,40px);
  padding-right:clamp(16px,3vw,40px);
}
.k8-shell--narrow{max-width:900px}
.k8-section{padding-block:clamp(40px,5vw,80px)}

.k8-grid{display:grid;gap:clamp(16px,2.2vw,32px)}
.k8-grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.k8-grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.k8-grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.k8-grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.k8-span-3{grid-column:span 3}
.k8-span-4{grid-column:span 4}
.k8-span-5{grid-column:span 5}
.k8-span-6{grid-column:span 6}
.k8-span-7{grid-column:span 7}
.k8-span-8{grid-column:span 8}
.k8-span-9{grid-column:span 9}
.k8-span-12{grid-column:span 12}

/* ---------- primitives ---------- */
.k8-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--k8-mono);
  font-size:11.5px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--k8-cyan-dark);
}
.k8-eyebrow::before{content:"";width:22px;height:1px;background:currentColor;flex:0 0 22px}
.k8-mono{font-family:var(--k8-mono);letter-spacing:.04em}
.k8-rule{height:1px;border:0;margin:0;background:var(--k8-mist)}

.k8-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:11px 22px;
  font-family:var(--k8-mono);
  font-size:13px;
  letter-spacing:.08em;
  border:1px solid transparent;
  border-radius:var(--k8-r);
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.k8-btn--primary{background:var(--k8-cyan);border-color:var(--k8-cyan);color:var(--k8-ink-900)}
.k8-btn--primary:hover{background:var(--k8-cyan-dark);border-color:var(--k8-cyan-dark);color:#04211D}
.k8-btn--ghost{background:transparent;border-color:var(--k8-line);color:var(--k8-ink-900)}
.k8-btn--ghost:hover{border-color:var(--k8-ink-900);background:rgba(28,37,51,.06)}
.k8-btn:active{transform:translateY(1px)}

.k8-crumbs{padding-block:20px 0}
.k8-crumbs__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--k8-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:#546A85;
}
.k8-crumbs__item{display:inline-flex;align-items:center;gap:8px}
.k8-crumbs__item a{color:#546A85;transition:color .16s ease}
.k8-crumbs__item a:hover{color:var(--k8-ink-900);text-decoration:underline;text-underline-offset:3px}
.k8-crumbs__item[aria-current="page"]{color:var(--k8-ink-900)}
.k8-crumbs__sep{color:var(--k8-line)}

.k8-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  font-family:var(--k8-mono);
  font-size:11px;
  letter-spacing:.1em;
  text-transform:uppercase;
  border:1px solid var(--k8-line);
  border-radius:var(--k8-r);
  color:var(--k8-graphite);
  background:transparent;
}
.k8-tag--new{background:var(--k8-orange);border-color:var(--k8-orange);color:#2A1000}
.k8-tag--ver{border-color:rgba(18,41,74,.32);color:var(--k8-ink-800)}

/* ---------- image containers ---------- */
.k8-media{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16 / 10;
  border:1px solid rgba(143,163,184,.34);
  border-radius:var(--k8-r);
  background:var(--k8-ink-800);
}
.k8-media img,.k8-media svg,.k8-media video{width:100%;height:100%;object-fit:cover}
.k8-media--wide{aspect-ratio:21 / 9}
.k8-media--square{aspect-ratio:1 / 1}
.k8-media--tall{aspect-ratio:3 / 4}
.k8-media__placeholder{
  display:flex;
  align-items:center;
  justify-content:center;
  width:100%;
  height:100%;
  padding:12px;
  text-align:center;
  font-family:var(--k8-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--k8-cyan);
  background-image:
    repeating-linear-gradient(135deg,rgba(54,240,208,.12) 0 1px,transparent 1px 12px),
    linear-gradient(160deg,var(--k8-ink-800) 0%,#071426 100%);
}

/* ---------- filter ---------- */
.k8-filter{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:14px 0;
  border-top:1px solid var(--k8-mist);
  border-bottom:1px solid var(--k8-mist);
}
.k8-filter__label{
  font-family:var(--k8-mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:#546A85;
  margin-right:6px;
}
.k8-filter__btn{
  min-height:34px;
  padding:5px 14px;
  font-family:var(--k8-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--k8-ink-800);
  border:1px solid var(--k8-line);
  border-radius:var(--k8-r);
  background:transparent;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease;
}
.k8-filter__btn:hover{border-color:var(--k8-cyan-dark);color:var(--k8-cyan-dark)}
.k8-filter__btn[aria-pressed="true"]{background:var(--k8-ink-900);border-color:var(--k8-ink-900);color:var(--k8-cyan)}
[data-filter-item][hidden]{display:none}

/* ---------- prose ---------- */
.k8-prose{max-width:var(--k8-measure);font-size:16.5px;line-height:1.78}
.k8-prose p{margin-bottom:1.05em}
.k8-prose h2{margin:1.9em 0 .6em;font-size:clamp(22px,2.4vw,28px)}
.k8-prose h3{margin:1.6em 0 .5em;font-size:19px}
.k8-prose ul{margin:0 0 1.2em}
.k8-prose ul li{position:relative;padding-left:20px;margin-bottom:.5em}
.k8-prose ul li::before{content:"";position:absolute;left:0;top:.72em;width:9px;height:1px;background:var(--k8-cyan-dark)}
.k8-prose a{color:var(--k8-ink-800);text-decoration:underline;text-decoration-color:var(--k8-violet);text-underline-offset:4px}
.k8-prose a:hover{text-decoration-color:var(--k8-cyan-dark)}
.k8-prose strong{color:var(--k8-ink-900);font-weight:700}

/* ---------- reveal ---------- */
.k8-js [data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .55s cubic-bezier(.2,.7,.3,1),transform .55s cubic-bezier(.2,.7,.3,1);
}
.k8-js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- footer ---------- */
.k8-footer{
  position:relative;
  margin-top:auto;
  overflow:hidden;
  background:var(--k8-ink-900);
  color:#B9C8D8;
  border-top:1px solid rgba(54,240,208,.3);
}
.k8-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    repeating-linear-gradient(90deg,rgba(143,163,184,.09) 0 1px,transparent 1px 110px),
    repeating-linear-gradient(0deg,rgba(143,163,184,.055) 0 1px,transparent 1px 110px);
}
.k8-footer__inner{
  position:relative;
  max-width:var(--k8-wide);
  margin:0 auto;
  padding:clamp(40px,5vw,76px) clamp(16px,3vw,40px) 26px;
}
.k8-footer__grid{
  display:grid;
  grid-template-columns:minmax(260px,1.6fr) repeat(3,minmax(130px,1fr));
  gap:clamp(28px,4vw,60px);
}
.k8-footer__brand{display:flex;flex-direction:column;gap:10px;min-width:0}
.k8-footer__name{
  font-family:var(--k8-display);
  font-size:clamp(18px,2vw,22px);
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.3;
  color:var(--k8-paper);
}
.k8-footer__summary{max-width:34em;font-size:14.5px;line-height:1.75;color:#9FB3C6}
.k8-footer__col{display:flex;flex-direction:column;min-width:0}
.k8-footer__title{
  font-family:var(--k8-mono);
  font-size:11px;
  font-weight:400;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--k8-cyan);
  padding-bottom:10px;
  margin-bottom:14px;
  border-bottom:1px solid rgba(143,163,184,.22);
}
.k8-footer__list{display:flex;flex-direction:column;gap:9px}
.k8-footer__list a{display:inline-block;font-size:14.5px;color:#B9C8D8;transition:color .16s ease}
.k8-footer__list a:hover{color:var(--k8-cyan)}
.k8-footer__meta{
  margin-top:clamp(32px,4vw,52px);
  padding-top:20px;
  border-top:1px solid rgba(143,163,184,.22);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px 28px;
  font-family:var(--k8-mono);
  font-size:12px;
  letter-spacing:.03em;
  color:#8FA3B8;
}
.k8-footer__contact,.k8-footer__legal{margin:0}
.k8-footer__legal{color:#7B8FA3}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .k8-header__inner{min-height:68px;gap:12px}
  .k8-header__aside{gap:10px}
  .k8-nav-toggle{display:inline-flex}
  .k8-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:4px clamp(16px,4vw,32px) 20px;
    background:var(--k8-ink-800);
    border-top:1px solid rgba(54,240,208,.34);
    border-bottom:1px solid rgba(54,240,208,.34);
    box-shadow:0 18px 34px rgba(3,10,20,.45);
    max-height:calc(100vh - 68px);
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-8px);
    transition:opacity .2s ease,transform .2s ease,visibility .2s linear;
  }
  .k8-nav[data-open]{opacity:1;visibility:visible;transform:none}
  .k8-nav__list{flex-direction:column;align-items:stretch;gap:0;width:100%}
  .k8-nav__item{display:block}
  .k8-nav__link{
    display:block;
    width:100%;
    height:auto;
    padding:13px 0;
    font-size:15.5px;
    color:#C3D0DE;
    border-bottom:1px solid rgba(143,163,184,.16);
    box-shadow:inset 3px 0 0 transparent;
  }
  .k8-nav__link::after{display:none}
  .k8-nav__link[aria-current="page"]{
    color:var(--k8-cyan);
    box-shadow:inset 3px 0 0 var(--k8-cyan);
    padding-left:12px;
  }
  .k8-nav__utility{margin-top:18px;align-self:flex-start}

  .k8-grid--3,.k8-grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .k8-grid--12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .k8-span-3,.k8-span-4{grid-column:span 3}
  .k8-span-5,.k8-span-6{grid-column:span 6}
  .k8-span-7,.k8-span-8,.k8-span-9,.k8-span-12{grid-column:1 / -1}

  .k8-footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .k8-footer__brand{grid-column:1 / -1}
}

@media (max-width:600px){
  body{font-size:16px}
  html{scroll-padding-top:88px}
  .k8-grid--2,.k8-grid--3,.k8-grid--4{grid-template-columns:minmax(0,1fr)}
  .k8-grid--12{grid-template-columns:minmax(0,1fr)}
  .k8-span-3,.k8-span-4,.k8-span-5,.k8-span-6,.k8-span-7,.k8-span-8,.k8-span-9,.k8-span-12{grid-column:1 / -1}
  .k8-footer__grid{grid-template-columns:minmax(0,1fr)}
  .k8-footer__meta{flex-direction:column;gap:8px}
  .k8-media--wide{aspect-ratio:16 / 10}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .k8-js [data-reveal]{opacity:1;transform:none;transition:none}
  .k8-progress__bar{transition:none}
}

@media print{
  .k8-header,.k8-footer,.k8-progress,.k8-nav-toggle,.k8-skip{display:none !important}
  body{background:#fff;color:#000}
  .k8-main{flex:none}
  a[href]::after{content:" (" attr(href) ")";font-size:11px;color:#444}
}