:root{
  --c-void:#07101F;
  --c-panel:#0D1A2F;
  --c-grid:#1E3350;
  --c-cyan:#38F2E4;
  --c-violet:#8B5CFF;
  --c-orange:#FF6A2B;
  --c-amber:#FFB547;
  --c-text:#E8F4FF;
  --c-muted:#9BB3C9;
  --c-tianshan:#5AA7C8;
  --c-line-soft:rgba(30,51,80,.62);
  --c-panel-soft:rgba(13,26,47,.74);
  --font-display:"Oswald","Barlow Condensed","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono","SFMono-Regular",ui-monospace,Menlo,Consolas,"Courier New",monospace;
  --wrap-max:1280px;
  --gutter:clamp(18px,4vw,48px);
  --header-h:76px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
  background-color:var(--c-void);
  background-image:
    repeating-linear-gradient(0deg,rgba(30,51,80,.45) 0 1px,transparent 1px 88px),
    repeating-linear-gradient(90deg,rgba(30,51,80,.45) 0 1px,transparent 1px 88px);
  background-attachment:fixed;
}
body{
  margin:0;
  min-height:100vh;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  letter-spacing:.01em;
  color:var(--c-text);
  background-image:
    radial-gradient(1000px 620px at 84% -12%,rgba(139,92,255,.18),transparent 62%),
    radial-gradient(860px 540px at 4% 2%,rgba(56,242,228,.10),transparent 60%),
    radial-gradient(700px 500px at 52% 118%,rgba(255,106,43,.08),transparent 65%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
img,svg,video{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,p,figure,dl,dd{margin:0}
a{color:inherit}
:focus-visible{outline:2px solid var(--c-cyan);outline-offset:3px}
#main-content{display:block;scroll-margin-top:calc(var(--header-h) + 24px)}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;line-height:1.16;letter-spacing:.02em;color:var(--c-text)}
strong{font-weight:700;color:#fff}
.wrap{width:100%;max-width:var(--wrap-max);margin-inline:auto;padding-inline:var(--gutter)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.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}
.section{position:relative;padding-block:clamp(48px,7vw,96px)}
.section__head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:12px 24px;margin-bottom:clamp(24px,4vw,44px)}
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.skip-link{
  position:fixed;top:10px;left:10px;z-index:300;
  padding:10px 18px;
  background:var(--c-cyan);color:#04101C;
  font-size:14px;font-weight:700;text-decoration:none;
  transform:translateY(-220%);
  transition:transform .2s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:none}
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(7,16,31,.93);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--c-grid);
}
.header-bar{background:rgba(13,26,47,.62);border-bottom:1px solid var(--c-line-soft)}
.header-bar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:34px;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--c-muted)}
.header-bar__now{display:inline-flex;align-items:center;gap:8px;color:var(--c-tianshan);text-transform:uppercase}
.header-bar__meta{text-align:right;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.header-main__inner{display:flex;align-items:center;justify-content:space-between;gap:clamp(14px,3vw,40px);min-height:var(--header-h)}
.header-progress{
  position:absolute;left:0;bottom:0;
  height:2px;width:0;
  background:linear-gradient(90deg,var(--c-cyan),var(--c-violet));
  box-shadow:0 0 14px rgba(56,242,228,.55);
  pointer-events:none;
  transition:width .12s linear;
}
.status-dot{
  display:inline-block;width:6px;height:6px;flex:0 0 auto;
  background:var(--c-cyan);border-radius:1px;
  box-shadow:0 0 10px rgba(56,242,228,.8);
  animation:statusPulse 3s ease-in-out infinite;
}
@keyframes statusPulse{0%,100%{opacity:1}50%{opacity:.32}}
.brand{display:inline-flex;align-items:center;gap:14px;flex:0 0 auto;text-decoration:none;color:var(--c-text)}
.brand__glyph{
  display:grid;place-items:center;width:44px;height:44px;flex:0 0 auto;
  font-family:var(--font-display);font-size:22px;font-weight:700;line-height:1;
  color:var(--c-cyan);
  border:1px solid rgba(56,242,228,.5);
  background:linear-gradient(160deg,rgba(56,242,228,.16),rgba(139,92,255,.16));
  box-shadow:inset 0 0 0 1px rgba(7,16,31,.65);
}
.brand__text{display:flex;flex-direction:column;gap:3px;line-height:1.1}
.brand__name{font-family:var(--font-display);font-size:20px;font-weight:700;letter-spacing:.14em}
.brand__tag{font-family:var(--font-mono);font-size:10px;letter-spacing:.24em;color:var(--c-muted);text-transform:uppercase}
.nav-toggle{
  display:none;align-items:center;gap:10px;
  min-height:44px;padding:0 14px;
  border:1px solid var(--c-grid);
  background:rgba(13,26,47,.85);
  color:var(--c-text);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;
  cursor:pointer;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover,.nav-toggle:focus-visible{border-color:var(--c-cyan);background:rgba(56,242,228,.08)}
.nav-toggle__bars{position:relative;display:block;width:16px;height:10px;flex:0 0 auto}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:100%;height:1.5px;
  background:var(--c-cyan);transition:top .26s var(--ease),transform .26s var(--ease);
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{top:8px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{top:4px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{top:4px;transform:rotate(-45deg)}
.nav-toggle__label{line-height:1}
.site-nav{display:block}
.site-nav__list{display:flex;align-items:center;gap:clamp(8px,1.3vw,20px)}
.site-nav__link{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:0 2px;
  color:var(--c-muted);text-decoration:none;
  font-size:15px;font-weight:500;letter-spacing:.06em;
  transition:color .2s var(--ease);
}
.site-nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:7px;height:2px;
  background:var(--c-cyan);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.site-nav__link:hover,.site-nav__link:focus-visible{color:var(--c-text)}
.site-nav__link:hover::after,.site-nav__link:focus-visible::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]{color:var(--c-text)}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1);box-shadow:0 0 12px rgba(56,242,228,.6)}
.site-nav__link--cta{
  padding:0 16px;margin-left:4px;
  border:1px solid rgba(56,242,228,.55);color:var(--c-text);
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.site-nav__link--cta::after{display:none}
.site-nav__link--cta:hover,.site-nav__link--cta:focus-visible{background:rgba(56,242,228,.14);border-color:var(--c-cyan);color:var(--c-cyan)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:46px;padding:0 22px;
  border:1px solid transparent;border-radius:0;
  background:transparent;color:var(--c-text);
  font-family:var(--font-body);font-size:14px;font-weight:600;letter-spacing:.08em;
  text-decoration:none;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn--primary{background:var(--c-cyan);color:#031019;border-color:var(--c-cyan)}
.btn--primary:hover,.btn--primary:focus-visible{box-shadow:0 0 0 1px var(--c-cyan),0 14px 32px -16px rgba(56,242,228,.9)}
.btn--ghost{border-color:var(--c-grid);color:var(--c-text)}
.btn--ghost:hover,.btn--ghost:focus-visible{border-color:var(--c-violet);background:rgba(139,92,255,.16);color:#fff}
.btn--points{background:linear-gradient(90deg,var(--c-orange),var(--c-amber));color:#1B0A02;border-color:transparent}
.btn--points:hover,.btn--points:focus-visible{box-shadow:0 14px 32px -16px rgba(255,106,43,.9)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border:1px solid var(--c-grid);
  background:rgba(30,51,80,.35);color:var(--c-muted);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;
  line-height:1.7;
}
.tag--version{border-color:rgba(139,92,255,.55);background:rgba(139,92,255,.14);color:#C9B6FF}
.tag--live{border-color:rgba(56,242,228,.55);background:rgba(56,242,228,.1);color:var(--c-cyan)}
.tag--points{border-color:rgba(255,106,43,.6);background:linear-gradient(90deg,rgba(255,106,43,.2),rgba(255,181,71,.1));color:#FFB08C}
.panel{
  position:relative;
  padding:clamp(20px,3vw,32px);
  border:1px solid var(--c-grid);
  background:linear-gradient(180deg,rgba(13,26,47,.92),rgba(13,26,47,.58));
}
.panel__head{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding-bottom:14px;margin-bottom:18px;
  border-bottom:1px solid var(--c-grid);
}
.panel__title{font-family:var(--font-display);font-size:clamp(18px,2vw,22px);font-weight:600;letter-spacing:.05em}
.panel__body{color:#C2D8EA;font-size:15px;line-height:1.85}
.chapter{display:flex;align-items:center;gap:16px;margin-bottom:clamp(20px,3vw,32px)}
.chapter__index{font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;color:var(--c-cyan)}
.chapter__title{font-family:var(--font-display);font-size:clamp(24px,3.4vw,36px);font-weight:600;letter-spacing:.03em;line-height:1.14}
.chapter__rule{flex:1 1 auto;height:1px;background:linear-gradient(90deg,var(--c-grid),transparent)}
.stat{display:flex;flex-direction:column;gap:8px}
.stat__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--c-muted)}
.stat__value{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(26px,3.4vw,40px);font-weight:700;line-height:1;
  letter-spacing:-.01em;color:var(--c-text);
}
.stat__value--cyan{color:var(--c-cyan)}
.stat__value--violet{color:#B39CFF}
.stat__value--points{color:var(--c-orange);text-shadow:0 0 24px rgba(255,106,43,.35)}
.breadcrumbs{margin-bottom:clamp(20px,3vw,34px)}
.breadcrumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--c-muted)}
.breadcrumbs__item{display:inline-flex;align-items:center}
.breadcrumbs__item:not(:last-child)::after{content:"/";margin-left:8px;color:var(--c-grid)}
.breadcrumbs__link{color:var(--c-muted);text-decoration:none;transition:color .18s var(--ease)}
.breadcrumbs__link:hover,.breadcrumbs__link:focus-visible{color:var(--c-cyan)}
.breadcrumbs__current{color:var(--c-text)}
.prose{max-width:74ch;font-size:16px;line-height:1.85;color:#C6DCEE}
.prose p{margin-bottom:1.1em}
.prose p:last-child{margin-bottom:0}
.prose h2{font-size:clamp(22px,2.6vw,30px);margin:1.8em 0 .7em}
.prose h3{font-size:clamp(18px,2vw,22px);margin:1.5em 0 .6em;color:#fff}
.prose ul,.prose ol{margin:0 0 1.1em;padding-left:1.4em;list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin-bottom:.5em}
.prose a{color:var(--c-cyan);text-decoration:underline;text-underline-offset:3px}
.prose strong{color:#fff}
.prose code{font-family:var(--font-mono);font-size:.92em;padding:1px 6px;border:1px solid var(--c-grid);background:rgba(30,51,80,.4);color:#C9B6FF}
.media-frame{
  position:relative;overflow:hidden;
  border:1px solid var(--c-grid);
  background:linear-gradient(140deg,rgba(30,51,80,.9),rgba(13,26,47,.96) 55%,rgba(7,16,31,1));
}
.media-frame::before{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    repeating-linear-gradient(90deg,rgba(56,242,228,.07) 0 1px,transparent 1px 34px),
    repeating-linear-gradient(0deg,rgba(56,242,228,.07) 0 1px,transparent 1px 34px);
  mix-blend-mode:screen;
}
.media-frame::after{
  content:"";position:absolute;left:0;bottom:0;z-index:2;
  width:56px;height:56px;pointer-events:none;
  border-left:2px solid var(--c-cyan);border-bottom:2px solid var(--c-cyan);
  opacity:.75;
}
.media-frame img{position:relative;z-index:0;width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:16/7}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--square{aspect-ratio:1/1}
.media-frame__caption{
  position:absolute;left:0;right:0;bottom:0;z-index:3;
  padding:14px 18px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:var(--c-muted);
  background:linear-gradient(180deg,transparent,rgba(7,16,31,.92));
}
.disclosure{border:1px solid var(--c-grid);background:rgba(13,26,47,.55);transition:border-color .2s var(--ease)}
.disclosure.is-open{border-color:rgba(56,242,228,.45)}
.disclosure__trigger{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;padding:18px clamp(16px,2.4vw,26px);
  border:0;background:transparent;text-align:left;
  font-family:var(--font-body);font-size:16px;font-weight:600;line-height:1.5;
  color:var(--c-text);cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.disclosure__trigger:hover,.disclosure__trigger:focus-visible{background:rgba(56,242,228,.06)}
.disclosure__icon{position:relative;width:12px;height:12px;flex:0 0 auto;border:1px solid var(--c-cyan)}
.disclosure__icon::before,.disclosure__icon::after{content:"";position:absolute;background:var(--c-cyan);transition:opacity .26s var(--ease)}
.disclosure__icon::before{top:calc(50% - .5px);left:2px;right:2px;height:1px}
.disclosure__icon::after{left:calc(50% - .5px);top:2px;bottom:2px;width:1px}
.disclosure.is-open .disclosure__icon::after{opacity:0}
.disclosure.is-open .disclosure__trigger{color:var(--c-cyan)}
.disclosure__panel{display:grid;grid-template-rows:0fr;transition:grid-template-rows .32s var(--ease)}
.disclosure.is-open .disclosure__panel{grid-template-rows:1fr}
.disclosure__inner{overflow:hidden}
.disclosure__body{
  padding:0 clamp(16px,2.4vw,26px) 20px;
  border-top:1px solid transparent;
  color:#C2D8EA;font-size:15px;line-height:1.85;
}
.disclosure.is-open .disclosure__body{border-top-color:var(--c-line-soft);padding-top:16px}
html.js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease);transition-delay:var(--reveal-delay,0ms)}
html.js [data-reveal].is-visible{opacity:1;transform:none}
.site-footer{
  position:relative;
  margin-top:clamp(64px,10vw,128px);
  border-top:1px solid var(--c-grid);
  background:linear-gradient(180deg,#0A1526 0%,#07101F 72%);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:var(--gutter);
  width:120px;height:2px;
  background:linear-gradient(90deg,var(--c-cyan),var(--c-violet));
  box-shadow:0 0 16px rgba(56,242,228,.6);
}
.site-footer__inner{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) minmax(0,1.4fr) minmax(0,1.1fr);
  gap:clamp(28px,5vw,72px);
  padding-block:clamp(44px,6vw,80px);
}
.brand--footer{margin-bottom:18px}
.footer-brand__summary{max-width:36ch;margin-bottom:18px;color:var(--c-muted);font-size:14px;line-height:1.85}
.footer-brand__status{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 12px;border:1px solid var(--c-line-soft);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--c-tianshan);
  text-transform:uppercase;
}
.footer-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(20px,3vw,40px)}
.footer-nav__title{
  padding-bottom:12px;margin-bottom:16px;
  border-bottom:1px solid var(--c-grid);
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.24em;text-transform:uppercase;color:var(--c-muted);
}
.footer-nav__list{display:flex;flex-direction:column;gap:10px}
.footer-nav__link{
  display:inline-block;
  color:#C6DCEE;font-size:14px;text-decoration:none;
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-nav__link:hover,.footer-nav__link:focus-visible{color:var(--c-cyan);transform:translateX(3px)}
.footer-contact__list{display:flex;flex-direction:column;gap:14px}
.footer-contact__row{display:flex;flex-direction:column;gap:3px}
.footer-contact__row dt{font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:#7D95AB}
.footer-contact__row dd{font-size:14px;color:#D7E9F7;word-break:break-word;font-variant-numeric:tabular-nums}
.footer-contact__note{margin-top:18px;font-size:12px;line-height:1.85;color:var(--c-muted)}
.footer-bottom{border-top:1px solid var(--c-line-soft);background:rgba(7,16,31,.6)}
.footer-bottom__inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 28px;padding-block:18px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:#7D95AB;
}
.footer-bottom__icp{color:var(--c-muted)}
@media (max-width:1000px){
  .site-footer__inner{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .footer-contact{grid-column:1 / -1}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  :root{--header-h:62px}
  .header-bar__inner{font-size:10px;letter-spacing:.1em}
  .header-bar__meta{display:none}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;left:0;right:0;top:100%;
    max-height:0;overflow:hidden;
    background:#0A1526;
    border-bottom:1px solid var(--c-grid);
    box-shadow:0 28px 54px -28px rgba(0,0,0,.95);
    transition:max-height .34s var(--ease);
  }
  .site-nav[data-open="true"]{max-height:calc(100vh - 110px);overflow-y:auto}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0;padding:10px var(--gutter) 24px}
  .site-nav__list > li + li{border-top:1px solid var(--c-line-soft)}
  .site-nav__link{width:100%;justify-content:flex-start;min-height:54px;padding:0 14px;font-size:16px;letter-spacing:.08em;color:var(--c-text)}
  .site-nav__link::after{display:none}
  .site-nav__link[aria-current="page"]{color:var(--c-cyan);box-shadow:inset 3px 0 0 var(--c-cyan);background:rgba(56,242,228,.05)}
  .site-nav__link--cta{margin:16px 0 0;justify-content:center;padding:0 14px;border-color:rgba(56,242,228,.55)}
  .brand__glyph{width:38px;height:38px;font-size:19px}
  .brand__name{font-size:17px;letter-spacing:.1em}
  .brand__tag{font-size:9px;letter-spacing:.18em}
}
@media (max-width:640px){
  body{font-size:15.5px}
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
  .site-footer__inner{grid-template-columns:minmax(0,1fr)}
  .footer-nav{grid-template-columns:minmax(0,1fr)}
  .footer-bottom__inner{flex-direction:column;align-items:flex-start}
  .chapter{gap:12px}
  .media-frame--wide{aspect-ratio:4/3}
  .brand__tag{display:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  html.js [data-reveal]{opacity:1;transform:none}
  .status-dot{animation:none}
  .site-nav{transition:none}
}