:root{
  --ink-900:#070B1F;
  --ink-800:#0B1130;
  --ink-700:#0E1636;
  --violet:#6C3BF4;
  --violet-soft:#B9A6FF;
  --cyan:#2BE8D0;
  --amber:#F5A524;
  --paper:#F2F3F7;
  --text:#F4F6FF;
  --muted:#A7B0D6;
  --glass:rgba(255,255,255,.08);
  --glass-2:rgba(255,255,255,.14);
  --line:rgba(167,176,214,.22);
  --line-soft:rgba(167,176,214,.14);
  --wrap:1180px;
  --gutter:clamp(16px,4vw,40px);
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-display:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"JetBrains Mono","Roboto Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;min-height:100vh;
  font-family:var(--font-body);font-size:16px;line-height:1.75;
  color:var(--text);background-color:var(--ink-900);
  background-image:
    radial-gradient(880px 560px at 10% -6%,rgba(108,59,244,.30),transparent 62%),
    radial-gradient(720px 520px at 94% 2%,rgba(43,232,208,.13),transparent 62%);
  background-repeat:no-repeat;background-attachment:scroll;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,figure,blockquote,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
:where(a,button,summary,[tabindex]):focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
::selection{background:rgba(43,232,208,.3);color:#fff}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;line-height:1.12;letter-spacing:-.02em;font-stretch:condensed}
h1{font-size:clamp(38px,7vw,84px)}
h2{font-size:clamp(26px,3.6vw,44px)}
h3{font-size:clamp(19px,2vw,25px);letter-spacing:0}
h4{font-size:16px;letter-spacing:.02em}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(40px,7vw,88px)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--cyan)}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--amber)}
.rule{height:1px;border:0;background:linear-gradient(90deg,var(--violet),rgba(43,232,208,.5) 40%,transparent);margin-block:clamp(24px,4vw,48px)}
.panel{position:relative;padding:clamp(18px,3vw,28px);border-radius:16px;background:var(--ink-700);border:1px solid var(--line);color:var(--text)}
.panel--glass{background:var(--glass);border-color:rgba(255,255,255,.14);-webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%)}
.panel--paper{background:var(--paper);color:#101528;border-color:transparent}
.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;border:1px solid var(--line);color:var(--violet-soft)}
.tag--cyan{color:var(--cyan);border-color:rgba(43,232,208,.42)}
.tag--amber{color:var(--amber);border-color:rgba(245,165,36,.42)}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--cyan)}
.crumbs__sep{color:rgba(167,176,214,.45)}
.crumbs__current{color:var(--text)}
.prose{max-width:38em;font-size:16.5px;line-height:1.8}
.prose p+p{margin-top:1.1em}
.prose a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
.prose h3{margin-top:1.8em;margin-bottom:.5em}
.panel--paper .prose{color:#1A2140}
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.media{position:relative;overflow:hidden;border-radius:14px;border:1px solid var(--line);aspect-ratio:16/9;background:linear-gradient(140deg,#141C43,#0B1130 55%,#1A1348)}
.media::after{content:"";position:absolute;inset:0;pointer-events:none;background:repeating-linear-gradient(118deg,rgba(108,59,244,.14) 0 1px,transparent 1px 15px)}
.media img{width:100%;height:100%;object-fit:cover}
.media--tall{aspect-ratio:4/5}
.media--square{aspect-ratio:1/1}
.media__caption{position:absolute;left:0;right:0;bottom:0;z-index:1;padding:14px 16px;font-size:12px;color:var(--muted);background:linear-gradient(0deg,rgba(7,11,31,.92),rgba(7,11,31,0))}
.btn{
  --btn-bd:var(--line);--btn-bg:transparent;--btn-fg:var(--text);
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 18px;border-radius:999px;border:1px solid var(--btn-bd);
  background:var(--btn-bg);color:var(--btn-fg);
  font-family:var(--font-body);font-size:13px;font-weight:600;letter-spacing:.06em;line-height:1.4;
  cursor:pointer;
  transition:border-color .2s ease,color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.btn:hover{--btn-bd:var(--violet-soft);--btn-fg:#fff}
.btn--solid{--btn-bg:linear-gradient(120deg,var(--violet),#4C2BD4);--btn-bd:transparent;--btn-fg:#fff;box-shadow:0 10px 26px -16px rgba(108,59,244,.95)}
.btn--solid:hover{--btn-bg:linear-gradient(120deg,#7D4DFF,#5A34EE);--btn-fg:#fff;box-shadow:0 14px 30px -14px rgba(43,232,208,.6)}
.btn--ghost{--btn-bd:rgba(43,232,208,.45);--btn-fg:var(--cyan)}
.btn--ghost:hover{--btn-bg:rgba(43,232,208,.10);--btn-fg:#fff}
.btn--sm{padding:7px 13px;font-size:11.5px;letter-spacing:.1em}
.btn--block{width:100%}
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;transform:translateY(-180%);
  padding:10px 16px;border-radius:8px;background:var(--cyan);color:#04121A;
  font-size:13px;font-weight:700;letter-spacing:.06em;
  transition:transform .2s ease;
}
.skip-link:focus{transform:translateY(0)}
/* ================= header ================= */
.masthead{
  position:sticky;top:0;z-index:80;
  background:linear-gradient(180deg,rgba(7,11,31,.95) 0%,rgba(10,16,41,.88) 100%);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  transition:background .3s ease,box-shadow .3s ease;
}
.masthead.is-condensed{
  background:rgba(7,11,31,.94);
  box-shadow:0 22px 44px -30px rgba(43,232,208,.55);
}
.masthead__inner{position:relative;width:100%;max-width:1240px;margin-inline:auto;padding-inline:var(--gutter)}
.masthead__utility{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  max-height:48px;overflow:hidden;
  padding-block:8px 7px;
  border-bottom:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);
  transition:max-height .3s ease,opacity .24s ease,padding .3s ease;
}
.masthead.is-condensed .masthead__utility{max-height:0;opacity:0;padding-block:0;border-color:transparent}
.masthead__status{display:inline-flex;align-items:center;gap:8px;min-width:0}
.masthead__dot{
  flex:0 0 auto;width:7px;height:7px;border-radius:50%;background:var(--cyan);
  box-shadow:0 0 0 3px rgba(43,232,208,.16),0 0 12px rgba(43,232,208,.85);
  animation:masthead-pulse 2.8s ease-in-out infinite;
}
@keyframes masthead-pulse{0%,100%{opacity:1}50%{opacity:.45}}
.masthead__issue{color:var(--violet-soft);letter-spacing:.2em;white-space:nowrap}
.masthead__brandrow{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;
  padding-block:14px;
  transition:padding .3s ease;
}
.masthead.is-condensed .masthead__brandrow{padding-block:8px}
.brand{grid-column:2;justify-self:center;display:inline-flex;align-items:center;gap:12px;color:var(--text)}
.brand__glyph{
  flex:0 0 auto;width:24px;height:26px;transform:skewX(-16deg);
  background-image:
    linear-gradient(var(--violet),var(--violet)),
    linear-gradient(var(--cyan),var(--cyan)),
    linear-gradient(var(--amber),var(--amber));
  background-repeat:no-repeat;
  background-size:6px 100%,6px 74%,6px 48%;
  background-position:0 100%,9px 100%,18px 100%;
}
.brand__text{display:flex;flex-direction:column;gap:2px}
.brand__mark{font-family:var(--font-display);font-size:clamp(20px,2.4vw,27px);font-weight:800;letter-spacing:.08em;line-height:1;font-stretch:condensed}
.brand__tagline{font-family:var(--font-mono);font-size:9.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);line-height:1.4;white-space:nowrap}
.masthead__actions{grid-column:3;justify-self:end;display:flex;align-items:center;gap:8px}
.masthead__toggle{
  grid-column:1;justify-self:start;
  display:none;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  width:42px;height:38px;padding:0;border-radius:10px;
  border:1px solid var(--line);background:var(--glass);color:var(--text);cursor:pointer;
  transition:border-color .2s ease,color .2s ease;
}
.masthead__toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.masthead__toggle-bar{display:block;width:17px;height:1.5px;border-radius:2px;background:currentColor;transition:transform .25s ease,opacity .18s ease}
.masthead__toggle[aria-expanded="true"] .masthead__toggle-bar:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.masthead__toggle[aria-expanded="true"] .masthead__toggle-bar:nth-child(2){opacity:0}
.masthead__toggle[aria-expanded="true"] .masthead__toggle-bar:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}
.masthead__navwrap{border-top:1px solid var(--line-soft)}
.nav{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:clamp(10px,2.2vw,32px);padding-block:8px 11px}
.nav__item{display:block}
.nav__link{
  position:relative;display:inline-flex;align-items:baseline;gap:6px;
  padding:4px 2px;color:var(--muted);
  font-size:13px;letter-spacing:.08em;
  transition:color .2s ease;
}
.nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1.5px;
  background:linear-gradient(90deg,var(--violet),var(--cyan));
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav__index{font-family:var(--font-mono);font-size:9.5px;letter-spacing:0;color:rgba(167,176,214,.55);transition:color .2s ease}
.nav__link:hover{color:var(--violet-soft)}
.nav__link:hover::after{transform:scaleX(1)}
.nav__link[aria-current="page"]{color:var(--text)}
.nav__link[aria-current="page"] .nav__index{color:var(--cyan)}
.nav__link[aria-current="page"]::after{transform:scaleX(1)}
.masthead__progress{position:absolute;left:0;right:0;bottom:0;height:2px;overflow:hidden;background:rgba(167,176,214,.14)}
.masthead__progress-bar{
  display:block;width:100%;height:100%;transform:scaleX(0);transform-origin:left;
  background:linear-gradient(90deg,var(--violet) 0%,var(--cyan) 58%,var(--amber) 100%);
  transition:transform .14s linear;
}
/* ================= footer ================= */
.site-footer{
  position:relative;overflow:hidden;margin-top:clamp(48px,8vw,96px);
  background:linear-gradient(180deg,#070B1F 0%,#0E1636 46%,#070B1F 100%);
  border-top:1px solid var(--line);color:var(--text);
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(640px 340px at 6% 0%,rgba(108,59,244,.32),transparent 66%),
    radial-gradient(560px 320px at 90% 8%,rgba(43,232,208,.16),transparent 66%),
    repeating-linear-gradient(116deg,rgba(255,255,255,.028) 0 2px,transparent 2px 84px);
}
.site-footer::after{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--violet),var(--cyan) 46%,var(--amber) 100%);opacity:.9;
}
.footer__inner{position:relative;z-index:1;width:100%;max-width:var(--wrap);margin-inline:auto;padding:clamp(36px,6vw,72px) var(--gutter) 0}
.footer__mast{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:clamp(24px,4vw,56px);
  padding-bottom:clamp(26px,4vw,46px);border-bottom:1px solid var(--line-soft);
}
.footer__mark{font-family:var(--font-display);font-size:clamp(34px,5.6vw,64px);font-weight:800;line-height:.95;letter-spacing:-.01em;font-stretch:condensed;margin-bottom:14px}
.footer__claim{max-width:34ch;color:var(--muted);font-size:14.5px;line-height:1.85;margin-bottom:18px}
.footer__contact{display:grid;gap:6px;font-family:var(--font-mono);font-size:12.5px;letter-spacing:.03em;color:var(--violet-soft)}
.footer__contact-item{overflow-wrap:anywhere}
.footer__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(18px,3vw,36px)}
.footer__col{min-width:0}
.footer__heading{
  display:flex;align-items:center;gap:8px;margin-bottom:14px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--cyan);
}
.footer__heading::before{content:"";width:14px;height:1px;background:var(--amber)}
.footer__links{display:grid;gap:9px}
.footer__link{display:inline-block;color:var(--muted);font-size:14px;line-height:1.5;border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease}
.footer__link:hover{color:var(--text);border-bottom-color:rgba(43,232,208,.55)}
.footer__link[aria-current="page"]{color:var(--cyan)}
.footer__legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 20px;
  margin-top:clamp(24px,4vw,40px);padding-block:18px;
  border-top:1px solid var(--line-soft);
  font-size:12.5px;color:var(--muted);
}
.footer__copy{font-family:var(--font-mono);letter-spacing:.04em}
.footer__top{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 15px;border-radius:999px;border:1px solid var(--line);
  background:var(--glass);color:var(--violet-soft);
  font-size:12px;letter-spacing:.1em;cursor:pointer;
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.footer__top:hover{border-color:var(--cyan);color:#fff;background:rgba(43,232,208,.1)}
/* ================= reveal ================= */
html.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease;transition-delay:var(--reveal-delay,0ms)}
html.js .reveal.is-visible{opacity:1;transform:none}
/* ================= responsive ================= */
@media (max-width:1024px){
  .nav{gap:14px}
  .nav__link{font-size:12.5px}
  .footer__mast{grid-template-columns:minmax(0,1fr) minmax(0,1.3fr)}
}
@media (max-width:900px){
  .masthead__toggle{display:inline-flex}
  .masthead__brandrow{grid-template-columns:auto 1fr auto;gap:10px}
  .brand__glyph{width:20px;height:22px;background-size:5px 100%,5px 74%,5px 48%;background-position:0 100%,8px 100%,16px 100%}
  .masthead__navwrap{
    position:absolute;left:0;right:0;top:100%;
    max-height:0;overflow:hidden;visibility:hidden;opacity:0;
    background:linear-gradient(180deg,rgba(11,17,48,.99),rgba(7,11,31,.99));
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
    box-shadow:0 28px 54px -32px rgba(0,0,0,.95);
    transition:max-height .38s ease,opacity .26s ease,visibility .38s;
  }
  .masthead__navwrap[data-open]{max-height:min(78vh,560px);overflow-y:auto;visibility:visible;opacity:1}
  .nav{flex-direction:column;align-items:stretch;gap:0;padding:6px var(--gutter) 18px}
  .nav__item{border-bottom:1px solid var(--line-soft)}
  .nav__link{width:100%;justify-content:flex-start;gap:12px;padding:14px 4px;font-size:15px;letter-spacing:.05em}
  .nav__link::after{left:0;right:auto;top:0;bottom:0;width:3px;height:auto;transform:scaleY(0);transform-origin:top}
  .nav__link:hover::after,.nav__link[aria-current="page"]::after{transform:scaleY(1)}
  .nav__index{font-size:11px}
  .footer__mast{grid-template-columns:1fr;gap:28px}
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 18px}
}
@media (max-width:640px){
  .masthead__utility{font-size:10px;letter-spacing:.1em}
  .masthead__issue{display:none}
  .brand__tagline{display:none}
  .brand__mark{font-size:19px}
  .masthead__actions .btn{padding:6px 10px;font-size:11px;letter-spacing:.06em}
  .footer__mark{font-size:34px}
  .footer__grid{grid-template-columns:1fr}
  .footer__legal{flex-direction:column;align-items:flex-start;gap:14px}
  .footer__copy{font-size:11.5px;line-height:1.7}
}
@media (max-width:380px){
  .masthead__actions{gap:6px}
  .masthead__actions .btn{padding:6px 8px;font-size:10.5px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .masthead__dot{animation:none}
  html.js .reveal{opacity:1;transform:none;transition:none}
}