:root{
  --pg-ink:#07090C;
  --pg-slate:#0E141B;
  --pg-panel:#16202A;
  --pg-white:#E9F2F6;
  --pg-cyan:#22D3EE;
  --pg-amber:#F5A524;
  --pg-violet:#A855F7;
  --pg-gray:#7C8B99;
  --pg-line:#24303C;
  --pg-ok:#4ADE80;
  --pg-shell:1520px;
  --pg-read:68ch;
  --pg-gap:clamp(16px,2.4vw,32px);
  --pg-ease:cubic-bezier(.22,.61,.36,1);
  --pg-notch:polygon(12px 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%,0 12px);
  --pg-font-sans:"Inter","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --pg-font-mono:"JetBrains Mono","SFMono-Regular",ui-monospace,"Cascadia Mono","Roboto Mono",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0}
a{color:inherit;text-decoration:none}
html,body{min-height:100%}
body{
  font-family:var(--pg-font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--pg-white);
  background-color:var(--pg-ink);
  background-image:
    radial-gradient(1100px 560px at 10% -8%,rgba(34,211,238,.10),transparent 62%),
    radial-gradient(860px 480px at 94% 4%,rgba(168,85,247,.09),transparent 64%),
    repeating-linear-gradient(0deg,rgba(233,242,246,.026) 0 1px,transparent 1px 4px),
    linear-gradient(180deg,rgba(14,20,27,.92),rgba(7,9,12,1) 46%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
::selection{background:rgba(34,211,238,.28);color:#fff}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.02em;line-height:1.2}
h1{font-size:clamp(32px,4.6vw,64px)}
h2{font-size:clamp(24px,2.8vw,44px)}
h3{font-size:clamp(18px,1.6vw,24px)}
h4{font-size:clamp(16px,1.2vw,18px);letter-spacing:0}
p{max-width:var(--pg-read)}
:focus-visible{outline:2px solid var(--pg-amber);outline-offset:3px}
#main-content{display:block;scroll-margin-top:104px}
[id]{scroll-margin-top:104px}
.pg-container{width:100%;max-width:1240px;margin-inline:auto;padding-inline:clamp(16px,4vw,48px)}
.pg-mono{font-family:var(--pg-font-mono);font-size:13px;letter-spacing:.02em;font-variant-numeric:tabular-nums}
.pg-section{padding-block:clamp(32px,5vw,64px)}
.pg-section__head{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px 18px;margin-bottom:clamp(18px,2.6vw,28px);padding-bottom:14px;border-bottom:1px solid var(--pg-line)}
.pg-lead{font-size:clamp(15px,1.2vw,17px);line-height:1.8;color:rgba(233,242,246,.82);max-width:var(--pg-read)}
.pg-note{font-family:var(--pg-font-mono);font-size:12px;line-height:1.7;letter-spacing:.02em;color:var(--pg-gray)}
.pg-rule{height:1px;border:0;background:var(--pg-line);margin-block:clamp(20px,3vw,36px)}
.pg-grid{display:grid;gap:var(--pg-gap)}
.pg-grid--split{grid-template-columns:minmax(0,4fr) minmax(0,7fr)}
.pg-grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.pg-panel{background:linear-gradient(180deg,var(--pg-slate),rgba(14,20,27,.72));border:1px solid var(--pg-line);padding:clamp(18px,2.4vw,28px)}
.pg-tag{display:inline-flex;align-items:center;gap:6px;padding:2px 8px;font-family:var(--pg-font-mono);font-size:11.5px;letter-spacing:.06em;line-height:1.6;color:var(--pg-gray);border:1px solid var(--pg-line);background:rgba(22,32,42,.7)}
.pg-tag--cyan{color:var(--pg-cyan);border-color:rgba(34,211,238,.45);background:rgba(34,211,238,.08)}
.pg-tag--amber{color:var(--pg-amber);border-color:rgba(245,165,36,.45);background:rgba(245,165,36,.08)}
.pg-tag--violet{color:var(--pg-violet);border-color:rgba(168,85,247,.45);background:rgba(168,85,247,.1)}
.pg-crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:6px;padding-top:18px;font-family:var(--pg-font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--pg-gray)}
.pg-crumbs li{display:inline-flex;align-items:center;gap:6px}
.pg-crumbs li+li::before{content:"/";color:rgba(124,139,153,.55)}
.pg-crumbs a{color:var(--pg-gray);transition:color .18s var(--pg-ease)}
.pg-crumbs a:hover{color:var(--pg-cyan)}
.pg-crumbs [aria-current="page"]{color:var(--pg-cyan)}
.pg-btn{
  position:relative;
  isolation:isolate;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 20px;
  font-family:var(--pg-font-sans);
  font-size:14px;
  font-weight:700;
  line-height:1.2;
  letter-spacing:.01em;
  cursor:pointer;
  --pg-btn-edge:var(--pg-line);
  --pg-btn-face:linear-gradient(180deg,#18232E,#101820);
  --pg-btn-ink:var(--pg-white);
  --pg-btn-edge-hover:var(--pg-cyan);
  color:var(--pg-btn-ink);
  transition:transform .18s var(--pg-ease),color .18s var(--pg-ease);
}
.pg-btn::after{content:"";position:absolute;inset:0;z-index:-2;background:var(--pg-btn-edge);clip-path:var(--pg-notch);transition:background-color .18s var(--pg-ease)}
.pg-btn::before{content:"";position:absolute;inset:1px;z-index:-1;background-image:var(--pg-btn-face);clip-path:var(--pg-notch);transition:filter .18s var(--pg-ease)}
.pg-btn:hover{transform:translateY(-2px)}
.pg-btn:hover::after{background:var(--pg-btn-edge-hover)}
.pg-btn:hover::before{filter:brightness(1.28)}
.pg-btn--sm{padding:9px 14px;font-size:13px}
.pg-btn--lg{padding:15px 26px;font-size:16px}
.pg-btn--amber{--pg-btn-edge:rgba(245,165,36,.8);--pg-btn-face:linear-gradient(180deg,rgba(245,165,36,.24),rgba(245,165,36,.08));--pg-btn-ink:#FFD48A;--pg-btn-edge-hover:var(--pg-amber)}
.pg-btn--ghost{--pg-btn-edge:var(--pg-line);--pg-btn-face:rgba(14,20,27,.55);--pg-btn-ink:var(--pg-gray);--pg-btn-edge-hover:rgba(34,211,238,.6)}
.pg-btn--ghost:hover{color:var(--pg-white)}
.pg-copy{display:inline-flex;align-items:center;gap:6px;padding:3px 9px;font-family:var(--pg-font-mono);font-size:11px;letter-spacing:.08em;color:var(--pg-cyan);background:rgba(34,211,238,.08);border:1px solid rgba(34,211,238,.4);cursor:pointer;transition:background-color .18s var(--pg-ease),border-color .18s var(--pg-ease),color .18s var(--pg-ease)}
.pg-copy:hover{background:rgba(34,211,238,.18);border-color:var(--pg-cyan)}
.pg-copy[data-copied="true"]{color:#04120A;background:var(--pg-ok);border-color:var(--pg-ok)}
.pg-details{border-top:1px solid var(--pg-line)}
.pg-details:last-of-type{border-bottom:1px solid var(--pg-line)}
.pg-details>summary{display:flex;align-items:center;gap:10px;padding:15px 4px;font-weight:700;cursor:pointer;list-style:none;transition:color .18s var(--pg-ease)}
.pg-details>summary::-webkit-details-marker{display:none}
.pg-details>summary::after{content:"";margin-left:auto;width:8px;height:8px;flex:0 0 auto;border-right:1.5px solid var(--pg-cyan);border-bottom:1.5px solid var(--pg-cyan);transform:rotate(45deg);transition:transform .2s var(--pg-ease)}
.pg-details>summary:hover{color:var(--pg-cyan)}
.pg-details[open]>summary::after{transform:rotate(225deg)}
.pg-details__body{padding:0 4px 20px;color:rgba(233,242,246,.8)}
.pg-table-wrap{width:100%;overflow-x:auto;border:1px solid var(--pg-line)}
.pg-table{width:100%;border-collapse:collapse;font-size:14px}
.pg-table th,.pg-table td{padding:11px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--pg-line)}
.pg-table thead th{background:var(--pg-panel);font-family:var(--pg-font-mono);font-size:11.5px;font-weight:500;letter-spacing:.1em;color:var(--pg-gray)}
.pg-table tbody tr:nth-child(even){background:rgba(22,32,42,.55)}
.pg-table tbody tr:hover{background:rgba(34,211,238,.06)}
.pg-table td.pg-mono,.pg-table th.pg-mono{color:var(--pg-cyan)}
.pg-media{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:var(--pg-ratio,16/9);
  overflow:hidden;
  border:1px solid var(--pg-line);
  background-image:
    radial-gradient(120% 120% at 18% 8%,rgba(34,211,238,.16),transparent 62%),
    repeating-linear-gradient(90deg,rgba(233,242,246,.05) 0 1px,transparent 1px 30px),
    linear-gradient(160deg,#0E141B,#07090C);
}
.pg-media img{width:100%;height:100%;object-fit:cover;display:block}
.pg-media--square{--pg-ratio:1/1}
.pg-media--tall{--pg-ratio:4/5}
.pg-media--ultra{--pg-ratio:21/9}
.pg-media__cap{position:absolute;left:10px;bottom:10px;padding:2px 8px;font-family:var(--pg-font-mono);font-size:11px;letter-spacing:.06em;color:var(--pg-gray);background:rgba(7,9,12,.72)}
.pg-skip{position:fixed;left:16px;top:16px;z-index:200;padding:10px 16px;font-size:14px;font-weight:700;color:var(--pg-ink);background:var(--pg-amber);transform:translateY(-180%);transition:transform .18s var(--pg-ease)}
.pg-skip:focus,.pg-skip:focus-visible{transform:translateY(0)}
.pg-header{
  position:sticky;
  top:0;
  z-index:80;
  background:linear-gradient(180deg,rgba(14,20,27,.97),rgba(7,9,12,.94));
  border-bottom:1px solid var(--pg-line);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
}
.pg-header__inner{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(12px,2.4vw,32px);
  width:100%;
  max-width:var(--pg-shell);
  margin-inline:auto;
  padding:12px clamp(14px,3vw,40px);
}
.pg-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:rgba(36,48,60,.65);overflow:hidden}
.pg-progress__bar{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--pg-cyan),var(--pg-violet));box-shadow:0 0 12px rgba(34,211,238,.55);transition:width .12s linear}
.pg-brand{order:1;display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;min-width:0}
.pg-brand__mark{display:grid;place-items:center;width:44px;height:44px;flex:0 0 auto;font-family:var(--pg-font-mono);font-size:16px;font-weight:700;letter-spacing:-.04em;color:var(--pg-white);background:linear-gradient(150deg,#1B2733,#0B1016);border:1px solid var(--pg-amber);clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);transition:box-shadow .18s var(--pg-ease),color .18s var(--pg-ease)}
.pg-brand:hover .pg-brand__mark{color:var(--pg-amber);box-shadow:inset 0 0 18px rgba(245,165,36,.42)}
.pg-brand__text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.pg-brand__name{font-size:16px;font-weight:800;letter-spacing:-.02em;color:var(--pg-white)}
.pg-brand__tag{font-family:var(--pg-font-mono);font-size:10.5px;letter-spacing:.04em;color:var(--pg-gray);white-space:nowrap}
.pg-header__actions{order:3;display:flex;align-items:center;gap:10px;flex:0 0 auto}
.pg-header__cta{display:inline-flex}
.pg-nav-toggle{display:none;align-items:center;gap:8px;padding:9px 13px;font-family:var(--pg-font-mono);font-size:12px;letter-spacing:.12em;color:var(--pg-white);background:rgba(22,32,42,.85);border:1px solid var(--pg-line);cursor:pointer;transition:border-color .18s var(--pg-ease),background-color .18s var(--pg-ease)}
.pg-nav-toggle:hover{border-color:rgba(34,211,238,.6);background:rgba(34,211,238,.1)}
.pg-nav-toggle__bars{display:flex;flex-direction:column;gap:4px;width:16px}
.pg-nav-toggle__bars span{display:block;height:1.5px;background:var(--pg-cyan);transition:transform .2s var(--pg-ease)}
.pg-nav-toggle__label{line-height:1}
.pg-nav{order:2;display:flex;align-items:center;gap:clamp(8px,1.4vw,18px);margin-left:auto}
.pg-nav__label{margin:0;padding-right:14px;font-family:var(--pg-font-mono);font-size:10.5px;letter-spacing:.28em;color:var(--pg-gray);border-right:1px solid var(--pg-line);white-space:nowrap}
.pg-nav__list{display:flex;align-items:center;gap:2px;counter-reset:pg-navitem}
.pg-nav__list>li{counter-increment:pg-navitem}
.pg-nav__link{position:relative;display:inline-flex;align-items:center;gap:6px;padding:9px 10px;font-size:14px;font-weight:600;color:rgba(233,242,246,.78);transition:color .18s var(--pg-ease),background-color .18s var(--pg-ease),transform .18s var(--pg-ease)}
.pg-nav__link::before{content:"0" counter(pg-navitem);font-family:var(--pg-font-mono);font-size:10px;letter-spacing:0;color:var(--pg-cyan);opacity:.55}
.pg-nav__link::after{content:"";position:absolute;left:10px;right:10px;bottom:4px;height:2px;background:var(--pg-cyan);transform:scaleX(0);transform-origin:left center;transition:transform .2s var(--pg-ease)}
.pg-nav__link:hover{color:var(--pg-white);background:rgba(34,211,238,.09);transform:translateY(-2px)}
.pg-nav__link:hover::after{transform:scaleX(1)}
.pg-nav__link[aria-current="page"]{color:var(--pg-cyan)}
.pg-nav__link[aria-current="page"]::after{background:var(--pg-amber);transform:scaleX(1)}
.pg-header__scan{height:1px;background-image:linear-gradient(90deg,transparent 0%,rgba(34,211,238,.55) 30%,rgba(168,85,247,.45) 62%,transparent 100%);background-size:220% 100%;animation:pg-scan 24s linear infinite;opacity:.85}
@keyframes pg-scan{from{background-position:0% 0}to{background-position:-200% 0}}
.pg-footer{margin-top:clamp(48px,7vw,112px);border-top:1px solid var(--pg-line);background-image:radial-gradient(880px 320px at 82% 0%,rgba(168,85,247,.10),transparent 62%),linear-gradient(180deg,#0B1016,#07090C)}
.pg-footer__inner{width:100%;max-width:var(--pg-shell);margin-inline:auto;padding:clamp(32px,4.5vw,64px) clamp(14px,3vw,40px) 26px}
.pg-footer__top{display:grid;grid-template-columns:minmax(260px,1.5fr) repeat(3,minmax(110px,.6fr));gap:clamp(24px,3vw,48px)}
.pg-footer__brand{min-width:0}
.pg-brand--footer .pg-brand__mark{width:40px;height:40px;font-size:15px}
.pg-footer__note{margin-top:18px;max-width:34ch;padding-left:12px;font-size:13.5px;line-height:1.7;color:var(--pg-gray);border-left:2px solid rgba(34,211,238,.5)}
.pg-footer__meta{margin-top:18px;display:flex;flex-wrap:wrap;gap:10px}
.pg-footer__col{min-width:0}
.pg-footer__title{margin-bottom:14px;font-family:var(--pg-font-mono);font-size:11px;font-weight:500;letter-spacing:.24em;color:var(--pg-cyan)}
.pg-footer__list{display:flex;flex-direction:column;gap:10px}
.pg-footer__link{display:inline-block;font-size:14px;color:rgba(233,242,246,.76);transition:color .18s var(--pg-ease),transform .18s var(--pg-ease)}
.pg-footer__link:hover{color:var(--pg-amber);transform:translateX(3px)}
.pg-footer__contact{margin-top:clamp(28px,4vw,48px);padding-top:22px;border-top:1px solid var(--pg-line);display:flex;flex-wrap:wrap;gap:10px 30px}
.pg-footer__line{display:inline-flex;align-items:center;flex-wrap:wrap;gap:8px;max-width:none;font-size:13.5px;color:var(--pg-gray)}
.pg-footer__line--wide{flex:1 1 100%;max-width:60ch;line-height:1.7}
.pg-footer__label{font-family:var(--pg-font-mono);font-size:11px;letter-spacing:.14em;color:rgba(124,139,153,.85)}
.pg-footer__value{color:var(--pg-white)}
.pg-footer__bottom{margin-top:24px;padding-top:16px;border-top:1px solid var(--pg-line);display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;font-family:var(--pg-font-mono);font-size:11.5px;letter-spacing:.04em;color:var(--pg-gray)}
.pg-footer__legal,.pg-footer__addr{max-width:none}
@media (max-width:1100px){
  .pg-nav__label{display:none}
  .pg-nav__link{padding:9px 8px;font-size:13.5px}
}
@media (max-width:980px){
  .pg-nav-toggle{display:inline-flex}
  .pg-header__cta{display:none}
  .pg-nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    order:4;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin-left:0;
    max-height:calc(100vh - 70px);
    overflow-y:auto;
    padding:4px clamp(14px,4vw,24px) 20px;
    background:linear-gradient(180deg,#0B1016,#07090C);
    border-top:1px solid var(--pg-line);
    border-bottom:1px solid var(--pg-line);
  }
  .pg-header[data-open="true"] .pg-nav{display:flex}
  .pg-header[data-open="true"] .pg-nav-toggle__bars span:first-child{transform:translateY(2.75px) rotate(45deg)}
  .pg-header[data-open="true"] .pg-nav-toggle__bars span:last-child{transform:translateY(-2.75px) rotate(-45deg)}
  .pg-nav__label{display:block;padding:16px 0 8px;border-right:0;border-bottom:1px solid var(--pg-line);letter-spacing:.28em}
  .pg-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .pg-nav__link{width:100%;padding:14px 10px 14px 24px;font-size:15px;border-bottom:1px solid rgba(36,48,60,.7)}
  .pg-nav__link:hover{transform:none;background:rgba(34,211,238,.07)}
  .pg-nav__link::after{left:6px;right:auto;top:50%;bottom:auto;width:2px;height:20px;transform:translateY(-50%) scaleY(0);transform-origin:center}
  .pg-nav__link:hover::after{transform:translateY(-50%) scaleY(1)}
  .pg-nav__link[aria-current="page"]::after{transform:translateY(-50%) scaleY(1)}
  .pg-grid--split,.pg-grid--3{grid-template-columns:minmax(0,1fr)}
  .pg-footer__top{grid-template-columns:repeat(2,minmax(0,1fr))}
  .pg-footer__brand{grid-column:1 / -1}
}
@media (max-width:620px){
  .pg-brand__tag{display:none}
  .pg-brand__mark{width:38px;height:38px;font-size:14px}
  .pg-footer__top{grid-template-columns:minmax(0,1fr)}
  .pg-footer__bottom{flex-direction:column;align-items:flex-start}
  .pg-btn{padding:11px 16px}
  .pg-nav-toggle__label{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}
  .pg-header__scan{animation:none}
  .pg-btn:hover,.pg-nav__link:hover,.pg-footer__link:hover{transform:none}
  .pg-progress__bar{transition:none}
}