/* ============ tokens ============ */
:root{
  --night-950:#050D0A;
  --night-900:#081711;
  --pitch-800:#0E241D;
  --panel-700:#15352B;
  --line-600:#2B5145;
  --paper-100:#F3F7EA;
  --muted-300:#A9C1B5;
  --cyan-400:#45FFC2;
  --cyan-700:#0E8F68;
  --amber-500:#FFB13B;
  --amber-700:#B86B12;

  --font-display:"Barlow Condensed","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono","Roboto Mono",SFMono-Regular,Menlo,Consolas,monospace;

  --shell:1240px;
  --gutter:clamp(16px,4vw,40px);
  --bd:1px solid var(--line-600);
  --r:2px;
}

/* ============ reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,h5,p,ul,ol,dl,dd,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,picture,video{display:block;max-width:100%}
a{color:inherit}
button{font:inherit;color:inherit}
[hidden]{display:none!important}
::selection{background:var(--cyan-400);color:var(--night-950)}
:focus-visible{outline:2px solid var(--cyan-400);outline-offset:3px;border-radius:1px}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}

/* ============ base ============ */
body{
  background-color:var(--night-950);
  background-image:
    radial-gradient(56% 38% at 82% -6%,rgba(69,255,194,.09),transparent 72%),
    radial-gradient(46% 34% at -4% 8%,rgba(255,177,59,.055),transparent 70%);
  background-repeat:no-repeat;
  color:var(--paper-100);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;letter-spacing:-.02em;line-height:1.14;color:var(--paper-100)}
p{max-width:72ch}

/* ============ utilities ============ */
.pn-container{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.pn-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}
.pn-mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.pn-display{font-family:var(--font-display);font-weight:900;font-size:clamp(2.4rem,7vw,5.6rem);line-height:.94;letter-spacing:-.03em;text-wrap:balance}
.pn-lede{font-size:clamp(1rem,1.4vw,1.12rem);line-height:1.8;color:var(--muted-300);max-width:46ch}
.pn-eyebrow{display:flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--amber-500)}
.pn-eyebrow::before{content:"";width:20px;height:2px;background:var(--amber-500);flex:0 0 auto}
.pn-rule{height:1px;border:0;background:var(--line-600);margin-block:clamp(20px,3vw,36px)}

/* ============ sections & grid ============ */
.pn-section{padding-block:clamp(40px,6vw,84px)}
.pn-section--band{background:var(--pitch-800);border-block:var(--bd)}
.pn-section__head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px 24px;padding-bottom:14px;margin-bottom:clamp(20px,3vw,36px);border-bottom:var(--bd)}
.pn-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(12px,2vw,24px)}
.pn-grid--auto{grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr))}
.pn-col--3{grid-column:span 3}
.pn-col--4{grid-column:span 4}
.pn-col--5{grid-column:span 5}
.pn-col--6{grid-column:span 6}
.pn-col--7{grid-column:span 7}
.pn-col--8{grid-column:span 8}
.pn-col--12{grid-column:span 12}
@media (max-width:1023px){
  .pn-col--3,.pn-col--4,.pn-col--5{grid-column:span 6}
}
@media (max-width:719px){
  .pn-col--3,.pn-col--4,.pn-col--5,.pn-col--6,.pn-col--7,.pn-col--8{grid-column:span 12}
}

/* ============ buttons ============ */
.pn-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border:1px solid var(--line-600);border-radius:var(--r);background:transparent;color:var(--paper-100);font-family:var(--font-body);font-size:14px;font-weight:700;letter-spacing:.04em;text-decoration:none;cursor:pointer;transition:background .18s ease,color .18s ease,border-color .18s ease}
.pn-btn--cyan{background:var(--cyan-400);border-color:var(--cyan-400);color:var(--night-950)}
.pn-btn--cyan:hover{background:var(--cyan-700);border-color:var(--cyan-700);color:var(--paper-100)}
.pn-btn--amber{background:transparent;border-color:var(--amber-700);color:var(--amber-500)}
.pn-btn--amber:hover{background:var(--amber-500);border-color:var(--amber-500);color:var(--night-950)}
.pn-btn--ghost:hover{border-color:var(--cyan-400);color:var(--cyan-400)}

/* ============ tags ============ */
.pn-tag{display:inline-flex;align-items:center;gap:6px;padding:3px 8px;border:1px solid var(--line-600);border-radius:var(--r);font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--muted-300)}
.pn-tag--amber{color:var(--amber-500);border-color:var(--amber-700);background:rgba(255,177,59,.1)}
.pn-tag--cyan{color:var(--cyan-400);border-color:var(--cyan-700);background:rgba(69,255,194,.1)}

/* ============ cards ============ */
.pn-card{position:relative;padding:clamp(16px,2.4vw,28px);background:var(--panel-700);border:var(--bd);border-radius:var(--r);min-width:0}
.pn-card--paper{background:var(--paper-100);border-color:var(--paper-100);color:var(--night-950)}
.pn-card--paper h2,.pn-card--paper h3{color:var(--night-950)}
.pn-card--flush{padding:0;overflow:hidden}
.pn-card__label{display:block;font-family:var(--font-mono);font-size:11.5px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--amber-500);margin-bottom:10px}

/* ============ media ============ */
.pn-media{position:relative;overflow:hidden;border:var(--bd);border-radius:var(--r);background:var(--pitch-800);isolation:isolate}
.pn-media img{width:100%;height:100%;object-fit:cover}
.pn-media--wide{aspect-ratio:16/9}
.pn-media--tall{aspect-ratio:3/4}
.pn-media--square{aspect-ratio:1/1}
.pn-media--night::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,13,10,.05) 0%,rgba(5,13,10,.55) 72%,rgba(5,13,10,.88) 100%);pointer-events:none;}
.pn-media__label{position:absolute;left:0;bottom:0;z-index:2;padding:10px 14px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--paper-100);background:rgba(5,13,10,.72);border-top:var(--bd);border-right:var(--bd)}

/* ============ breadcrumb ============ */
.pn-breadcrumb{background:var(--night-900);border-bottom:var(--bd);padding-block:12px}
.pn-breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--muted-300)}
.pn-breadcrumb__list li{display:flex;align-items:center;gap:8px}
.pn-breadcrumb__list li+li::before{content:"/";color:var(--line-600)}
.pn-breadcrumb a{color:var(--muted-300);text-decoration:none}
.pn-breadcrumb a:hover{color:var(--cyan-400)}
.pn-breadcrumb [aria-current="page"]{color:var(--paper-100)}

/* ============ prose ============ */
.pn-prose{max-width:66ch;font-size:16.5px;line-height:1.8;color:var(--muted-300)}
.pn-prose h2{font-size:clamp(1.4rem,2.4vw,1.9rem);color:var(--paper-100);margin-block:1.6em .6em}
.pn-prose h3{font-size:1.15rem;color:var(--paper-100);margin-block:1.4em .5em}
.pn-prose p+p{margin-top:1em}
.pn-prose ul{list-style:none;display:grid;gap:8px;margin-block:1em}
.pn-prose li{padding-left:18px;position:relative}
.pn-prose li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:2px;background:var(--amber-500)}
.pn-prose a{color:var(--cyan-400);text-decoration:underline;text-underline-offset:3px}

/* ============ tabs ============ */
.pn-tabs{margin-block:clamp(16px,3vw,28px)}
.pn-tabs__list{display:flex;flex-wrap:wrap;gap:4px;border-bottom:var(--bd)}
.pn-tab{position:relative;appearance:none;background:transparent;border:1px solid transparent;border-bottom:0;border-radius:var(--r) var(--r) 0 0;padding:11px 16px;color:var(--muted-300);font-size:14px;font-weight:700;letter-spacing:.04em;cursor:pointer;transition:color .18s ease,background .18s ease,border-color .18s ease}
.pn-tab::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--cyan-400);transform:scaleX(0);transform-origin:left;transition:transform .2s ease}
.pn-tab:hover{color:var(--paper-100)}
.pn-tab[aria-selected="true"]{color:var(--paper-100);background:var(--panel-700);border-color:var(--line-600)}
.pn-tab[aria-selected="true"]::after{transform:scaleX(1)}
.pn-tabs__panel{padding-top:20px;animation:pn-fade .22s ease both}
@keyframes pn-fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ============ faq / details ============ */
.pn-faq{border-bottom:var(--bd);background:transparent}
.pn-faq__q{display:flex;align-items:flex-start;gap:12px;padding:16px 2px;list-style:none;cursor:pointer;font-size:15.5px;font-weight:700;line-height:1.55;color:var(--paper-100);transition:color .18s ease}
.pn-faq__q::-webkit-details-marker{display:none}
.pn-faq__q::after{content:"+";margin-left:auto;font-family:var(--font-mono);font-size:18px;line-height:1;color:var(--cyan-400)}
.pn-faq[open] .pn-faq__q{color:var(--cyan-400)}
.pn-faq[open] .pn-faq__q::after{content:"–"}
.pn-faq__a{padding:0 2px 18px;font-size:15px;line-height:1.8;color:var(--muted-300);max-width:70ch}

/* ============ skip link ============ */
.pn-skip{position:fixed;top:10px;left:10px;z-index:200;transform:translateY(-200%);background:var(--cyan-400);color:var(--night-950);font-size:14px;font-weight:800;letter-spacing:.04em;padding:10px 18px;border-radius:var(--r);text-decoration:none;transition:transform .18s ease}
.pn-skip:focus,.pn-skip:focus-visible{transform:none}

/* ============ header ============ */
.pn-header{position:sticky;top:0;z-index:60;background:var(--night-900);border-bottom:var(--bd)}
.pn-header[data-scrolled]{border-bottom-color:var(--cyan-700);box-shadow:0 18px 34px -26px #000}
.pn-header__top{background:var(--night-950);border-bottom:1px solid rgba(43,81,69,.75)}
.pn-header__topInner{display:flex;align-items:center;gap:clamp(10px,2vw,24px);min-height:44px;padding-block:6px}
.pn-header__brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none;color:var(--paper-100)}
.pn-header__mark{font-family:var(--font-mono);font-size:11px;font-weight:700;line-height:1;letter-spacing:.14em;padding:6px 7px;background:var(--cyan-400);color:var(--night-950);border-radius:1px}
.pn-header__brandText{display:flex;flex-direction:column;line-height:1.15}
.pn-header__brandName{font-family:var(--font-display);font-size:17px;font-weight:800;letter-spacing:-.01em}
.pn-header__brandLine{font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;color:var(--muted-300);margin-top:2px}
.pn-header__hint{display:none;margin:0;font-size:12px;line-height:1.4;color:var(--muted-300);max-width:none}
.pn-header__utility{display:flex;align-items:center;gap:14px;margin-left:auto;font-size:12px;letter-spacing:.02em}
.pn-header__utility a{color:var(--muted-300);text-decoration:none;padding-bottom:1px;border-bottom:1px solid transparent;transition:color .16s ease,border-color .16s ease}
.pn-header__utility a:hover{color:var(--paper-100);border-bottom-color:var(--cyan-400)}
@media (min-width:1024px){
  .pn-header__hint{display:block;margin-left:auto}
  .pn-header__utility{margin-left:0;padding-left:16px;border-left:var(--bd)}
}
@media (max-width:520px){
  .pn-header__brandLine{display:none}
  .pn-header__utility{gap:10px;font-size:11.5px}
}

.pn-header__bar{position:relative;background:var(--night-900)}
.pn-header__barInner{display:flex;align-items:center;gap:clamp(8px,2vw,20px);min-height:58px;padding-block:6px}

/* nav — desktop */
.pn-nav{flex:1 1 auto;min-width:0}
.pn-nav__list{display:flex;align-items:center;flex-wrap:wrap;gap:clamp(4px,1.6vw,20px);counter-reset:navi}
.pn-nav__link{position:relative;display:inline-flex;align-items:baseline;gap:6px;padding:12px 2px;color:var(--paper-100);font-size:14px;font-weight:600;letter-spacing:.03em;text-decoration:none;white-space:nowrap;transition:color .18s ease}
.pn-nav__link::before{counter-increment:navi;content:"0" counter(navi);font-family:var(--font-mono);font-size:10px;font-weight:500;letter-spacing:.04em;color:var(--amber-700);transition:color .18s ease}
.pn-nav__link::after{content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;background:var(--cyan-400);transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
.pn-nav__link:hover{color:var(--cyan-400)}
.pn-nav__link:hover::before{color:var(--amber-500)}
.pn-nav__link:hover::after{transform:scaleX(1)}
.pn-nav__link[aria-current="page"]{color:var(--cyan-400)}
.pn-nav__link[aria-current="page"]::before{color:var(--amber-500)}
.pn-nav__link[aria-current="page"]::after{transform:scaleX(1)}

.pn-header__cta{display:inline-flex;align-items:center;justify-content:center;padding:9px 14px;background:var(--cyan-400);border:1px solid var(--cyan-400);border-radius:var(--r);color:var(--night-950);font-size:13px;font-weight:800;letter-spacing:.04em;text-decoration:none;white-space:nowrap;transition:background .18s ease,color .18s ease,border-color .18s ease}
.pn-header__cta:hover{background:transparent;border-color:var(--cyan-400);color:var(--cyan-400)}

.pn-nav__toggle{display:none;align-items:center;gap:8px;padding:9px 12px;background:transparent;border:1px solid var(--line-600);border-radius:var(--r);color:var(--paper-100);cursor:pointer;transition:border-color .18s ease,color .18s ease}
.pn-nav__toggle:hover{border-color:var(--cyan-400);color:var(--cyan-400)}
.pn-nav__toggleBars{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:16px}
.pn-nav__toggleBars span{display:block;height:2px;width:100%;background:currentColor;transition:transform .2s ease,opacity .2s ease}
.pn-nav__toggle[aria-expanded="true"] .pn-nav__toggleBars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.pn-nav__toggle[aria-expanded="true"] .pn-nav__toggleBars span:nth-child(2){opacity:0}
.pn-nav__toggle[aria-expanded="true"] .pn-nav__toggleBars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.pn-nav__toggleText{font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.14em}

.pn-progress{height:2px;background:rgba(43,81,69,.55);overflow:hidden}
.pn-progress__bar{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cyan-400),var(--amber-500));transition:width .12s linear}

/* nav — mobile */
@media (max-width:899px){
  .pn-header__cta{margin-left:auto;padding:8px 11px;font-size:12px}
  .pn-nav__toggle{display:inline-flex}
  .pn-nav{position:absolute;left:0;right:0;top:100%;z-index:5;display:none;flex:1 1 100%;padding:6px var(--gutter) 18px;background:var(--night-900);border-top:var(--bd);border-bottom:var(--bd);box-shadow:0 28px 44px -26px #000;max-height:calc(100vh - 108px);overflow-y:auto}
  .pn-nav[data-open]{display:block}
  .pn-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .pn-nav__link{display:flex;width:100%;padding:14px 2px;font-size:16px;border-bottom:1px dashed rgba(43,81,69,.8)}
  .pn-nav__link::after{display:none}
  .pn-nav__link[aria-current="page"]{background:rgba(69,255,194,.07);box-shadow:inset 3px 0 0 var(--cyan-400)}
}

/* ============ footer ============ */
.pn-footer{position:relative;background:var(--night-950);border-top:var(--bd);padding-block:clamp(36px,6vw,72px) 24px;color:var(--muted-300)}
.pn-footer::before{content:"";position:absolute;inset:0 0 auto 0;height:8px;background:repeating-linear-gradient(90deg,var(--line-600) 0 1px,transparent 1px 28px);opacity:.85;pointer-events:none}
.pn-footer__lead{display:grid;gap:12px;max-width:820px;margin-bottom:clamp(26px,4vw,48px)}
.pn-footer__statement{font-family:var(--font-display);font-weight:900;font-size:clamp(1.8rem,5vw,3.2rem);line-height:1.04;letter-spacing:-.03em;color:var(--paper-100);max-width:16ch;text-wrap:balance}
.pn-footer__note{font-size:14px;line-height:1.75;color:var(--muted-300);max-width:54ch}
.pn-footer__grid{display:grid;grid-template-columns:1fr;gap:clamp(22px,4vw,40px);padding-top:clamp(20px,3vw,32px);border-top:var(--bd)}
.pn-footer__col{min-width:0}
.pn-footer__colTitle{display:flex;align-items:center;gap:8px;margin-bottom:14px;font-family:var(--font-mono);font-size:11.5px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--amber-500)}
.pn-footer__colTitle::before{content:"";width:14px;height:2px;background:var(--amber-500);flex:0 0 auto}
.pn-footer__links{display:grid;gap:10px;font-size:14.5px}
.pn-footer__links a{color:var(--paper-100);text-decoration:none;padding-bottom:1px;border-bottom:1px solid transparent;transition:color .16s ease,border-color .16s ease}
.pn-footer__links a:hover{color:var(--cyan-400);border-bottom-color:var(--cyan-400)}
.pn-footer__contact{min-width:0}
.pn-contactRow{display:grid;grid-template-columns:auto 1fr;gap:8px 14px;align-items:start;font-size:14px}
.pn-contactRow__k{font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.14em;color:var(--muted-300);padding-top:3px}
.pn-contactRow__v{margin:0;color:var(--paper-100);word-break:break-word;line-height:1.6}
.pn-contactRow__v a{color:var(--paper-100);text-decoration:underline;text-decoration-color:var(--line-600);text-underline-offset:3px}
.pn-contactRow__v a:hover{color:var(--cyan-400);text-decoration-color:var(--cyan-400)}
.pn-footer__base{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 20px;margin-top:clamp(24px,4vw,40px);padding-top:16px;border-top:1px dashed var(--line-600);font-size:12.5px;color:var(--muted-300)}
.pn-footer__copy{margin:0;max-width:none}
.pn-footer__legal{margin:0;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;max-width:none}
@media (min-width:720px){
  .pn-footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1024px){
  .pn-footer__grid{grid-template-columns:1fr 1fr 1.35fr;gap:clamp(24px,4vw,56px)}
}

/* ============ reveal ============ */
html.pn-js [data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
html.pn-js [data-reveal].is-in{opacity:1;transform:none}

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