/* ============ 1. RESET ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,dl,dt,dd,figure,blockquote{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
main{display:block}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:1px}

/* ============ 2. TOKENS ============ */
:root{
  --void:#050A18;
  --deep:#0A1430;
  --layer:#142A52;
  --cyan:#22F5E0;
  --cyan-dim:#0E8F86;
  --orange:#FF6A1A;
  --orange-dim:#B33F0A;
  --ice:#BFE3FF;
  --paper:#F7FBFF;
  --edge:#1D2A40;
  --font-display:'Oswald','Arial Narrow','Noto Sans SC',sans-serif;
  --font-mono:'JetBrains Mono','Roboto Mono',ui-monospace,monospace;
  --font-body:'Noto Sans SC','Inter','PingFang SC',sans-serif;
  --shell:min(1520px,100% - 40px);
  --header-h:74px;
  --dur:180ms;
  --ease:cubic-bezier(.22,.68,.28,1);
  --progress:0;
}
@media (max-width:640px){
  :root{--shell:min(1520px,100% - 28px);--header-h:64px}
}

/* ============ 3. BASE ============ */
body{
  min-height:100vh;
  background-color:var(--void);
  background-image:
    radial-gradient(900px 520px at 8% -6%,rgba(34,245,224,.09),transparent 62%),
    radial-gradient(780px 460px at 98% 2%,rgba(255,106,26,.07),transparent 60%),
    radial-gradient(1100px 640px at 50% 118%,rgba(20,42,82,.5),transparent 72%);
  background-attachment:fixed;
  color:var(--ice);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.012em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:300;color:var(--paper);line-height:1.15;letter-spacing:.02em}
#main-content{scroll-margin-top:calc(var(--header-h) + 12px)}

/* ============ 4. TYPOGRAPHY UTILITIES ============ */
.display-xl{font-family:var(--font-display);font-weight:200;font-size:clamp(42px,7.4vw,92px);line-height:.96;letter-spacing:.004em;color:var(--paper)}
.display-lg{font-family:var(--font-display);font-weight:200;font-size:clamp(30px,4.4vw,58px);line-height:1.02;letter-spacing:.01em;color:var(--paper)}
.display-md{font-family:var(--font-display);font-weight:300;font-size:clamp(21px,2.3vw,32px);line-height:1.2;color:var(--paper)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan)}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan);opacity:.75}
.lede{font-size:clamp(15px,1.15vw,17px);line-height:1.8;color:rgba(191,227,255,.84);max-width:64ch}
.prose{max-width:68ch;color:rgba(191,227,255,.86)}
.prose p+p{margin-top:1em}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(34,245,224,.4);transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease)}
.prose a:hover{border-bottom-color:var(--cyan);background:rgba(34,245,224,.08)}
.num{font-family:var(--font-mono);font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.01em;color:var(--paper)}
.num--signal{color:var(--orange)}
.num--live{color:var(--cyan)}

/* ============ 5. LAYOUT UTILITIES ============ */
.shell{width:var(--shell);margin-inline:auto}
.section{padding-block:clamp(40px,6vw,88px)}
.section--tight{padding-block:clamp(24px,3.5vw,48px)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;padding-bottom:16px;border-bottom:1px solid var(--edge);margin-bottom:clamp(20px,3vw,36px)}
.stack{display:grid;gap:clamp(12px,1.6vw,22px)}
.rule{height:1px;background:var(--edge);border:0}
.grid{display:grid;gap:clamp(16px,2.4vw,34px)}
@media (min-width:1000px){
  .grid--split{grid-template-columns:minmax(0,1fr) minmax(0,1.35fr)}
  .grid--4-8{grid-template-columns:4fr 8fr}
  .grid--5-7{grid-template-columns:5fr 7fr}
  .grid--3-9{grid-template-columns:3fr 9fr}
}

/* ============ 6. SKIP LINK ============ */
.skip-link{
  position:absolute;left:12px;top:-72px;z-index:120;
  padding:10px 18px;border-radius:2px;
  background:var(--cyan);color:#04121a;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.08em;
  transition:top 160ms var(--ease);
}
.skip-link:focus{top:12px}

/* ============ 7. HEADER ============ */
.arena-header{
  position:sticky;top:0;z-index:80;
  background:linear-gradient(180deg,rgba(5,10,24,.97),rgba(5,10,24,.87));
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--edge);
}
.arena-header__inner{
  width:var(--shell);margin-inline:auto;position:relative;
  display:grid;grid-template-columns:minmax(240px,320px) minmax(0,1fr);
  align-items:center;gap:clamp(12px,2vw,32px);
  min-height:var(--header-h);
}
.arena-header__progress{
  position:absolute;left:0;bottom:-1px;width:100%;height:2px;
  transform:scaleX(var(--progress));transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--orange));
  opacity:.9;pointer-events:none;transition:transform 120ms linear;
}
.arena-brand{display:flex;flex-direction:column;gap:4px;min-width:0}
.arena-brand__mark{display:flex;align-items:center;gap:11px;min-width:0}
.arena-brand__index{
  flex:none;font-family:var(--font-mono);font-weight:700;font-size:12px;letter-spacing:.08em;
  color:var(--orange);padding:4px 7px;border:1px solid var(--orange-dim);border-radius:2px;
  background:rgba(255,106,26,.09);transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease)
}
.arena-brand__mark:hover .arena-brand__index{border-color:var(--orange);color:var(--paper);background:var(--orange)}
.arena-brand__text{display:flex;flex-direction:column;min-width:0}
.arena-brand__name{font-family:var(--font-display);font-weight:300;font-size:clamp(15px,1.45vw,19px);letter-spacing:.06em;color:var(--paper);white-space:nowrap}
.arena-brand__tagline{font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;color:rgba(191,227,255,.55);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.arena-status{display:inline-flex;align-items:center;gap:7px;font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;color:var(--cyan)}
.arena-status__dot{width:5px;height:5px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 3px rgba(34,245,224,.16)}

.arena-nav{display:flex;align-items:center;justify-content:flex-end;gap:clamp(8px,1.4vw,20px);min-width:0}
.arena-nav__list{display:flex;align-items:stretch;gap:2px}
.arena-nav__item{display:flex}
.arena-nav__link{
  position:relative;display:flex;align-items:baseline;gap:6px;
  padding:9px 12px;border-left:2px solid transparent;
  font-size:13px;letter-spacing:.06em;color:rgba(191,227,255,.76);
  transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.arena-nav__index{font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;color:rgba(191,227,255,.34);transition:color var(--dur) var(--ease)}
.arena-nav__link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:1px;
  background:var(--cyan);transform:scaleX(0);transform-origin:0 50%;
  transition:transform var(--dur) var(--ease);
}
.arena-nav__link:hover{color:var(--paper);background:rgba(20,42,82,.6)}
.arena-nav__link:hover .arena-nav__index{color:var(--cyan)}
.arena-nav__link:hover::after{transform:scaleX(1)}
.arena-nav__link[aria-current="page"]{
  color:var(--cyan);border-left-color:var(--cyan);
  background:linear-gradient(90deg,rgba(34,245,224,.13),transparent);
}
.arena-nav__link[aria-current="page"] .arena-nav__index{color:var(--cyan)}
.arena-nav__link[aria-current="page"]::after{transform:scaleX(1)}
.arena-nav__quick{display:flex;gap:6px;padding-left:clamp(8px,1.2vw,18px);border-left:1px solid var(--edge)}
.quick-chip{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;
  padding:5px 10px;border:1px solid var(--layer);border-radius:2px;color:var(--ice);
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.quick-chip:hover{background:var(--cyan);border-color:var(--cyan);color:#04121a;transform:translateY(-1px)}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  border:1px solid var(--layer);border-radius:2px;padding:9px 12px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--ice);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{display:grid;gap:3px;width:16px}
.nav-toggle__bars i{display:block;height:1px;background:currentColor;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.arena-header[data-open] .nav-toggle__bars i:first-child{transform:translateY(4px) rotate(45deg)}
.arena-header[data-open] .nav-toggle__bars i:nth-child(2){opacity:0}
.arena-header[data-open] .nav-toggle__bars i:last-child{transform:translateY(-4px) rotate(-45deg)}

/* ============ 8. FOOTER ============ */
.arena-footer{
  position:relative;margin-top:clamp(48px,8vw,120px);
  border-top:1px solid var(--edge);
  background:linear-gradient(180deg,rgba(10,20,48,.45),rgba(5,10,24,.96));
}
.arena-footer__inner{width:var(--shell);margin-inline:auto;padding:clamp(36px,5vw,72px) 0 28px}
.arena-footer__grid{
  display:grid;
  grid-template-columns:minmax(220px,1.5fr) repeat(3,minmax(120px,1fr));
  gap:clamp(22px,3vw,48px);
}
.arena-footer__brand{display:grid;justify-items:start;gap:14px}
.arena-footer__logo{
  font-family:var(--font-display);font-weight:200;font-size:clamp(26px,2.6vw,38px);
  letter-spacing:.06em;color:var(--paper);line-height:1;
}
.arena-footer__lede{font-size:14px;line-height:1.75;color:rgba(191,227,255,.72);max-width:34ch}
.arena-footer__col-title{
  display:flex;align-items:center;gap:10px;margin-bottom:14px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.16em;
  color:var(--cyan);text-transform:uppercase;
}
.arena-footer__col-title::after{content:"";flex:1;height:1px;background:var(--edge)}
.arena-footer__list{display:grid;gap:9px}
.arena-footer__list a{
  position:relative;display:inline-block;font-size:14px;color:rgba(191,227,255,.82);
  padding-bottom:2px;transition:color var(--dur) var(--ease)
}
.arena-footer__list a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--cyan);
  transform:scaleX(0);transform-origin:0 50%;transition:transform var(--dur) var(--ease)
}
.arena-footer__list a:hover{color:var(--paper)}
.arena-footer__list a:hover::after{transform:scaleX(1)}
.arena-footer__contact{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(14px,2vw,32px);
  margin-top:clamp(26px,4vw,46px);padding-top:clamp(20px,3vw,30px);border-top:1px solid var(--edge);
}
.contact-row dt{font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;color:var(--cyan);margin-bottom:5px}
.contact-row dd{font-size:14px;color:var(--paper);word-break:break-word}
.arena-footer__note{margin-top:16px;font-size:12px;line-height:1.7;color:rgba(191,227,255,.5);max-width:70ch}
.arena-footer__legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:clamp(24px,3.5vw,42px);padding-top:20px;border-top:1px solid var(--edge);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:rgba(191,227,255,.55);
}
.arena-footer__icp{color:rgba(191,227,255,.7)}
.to-top{
  display:inline-flex;align-items:center;gap:9px;
  padding:8px 13px;border:1px solid var(--layer);border-radius:2px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--cyan);
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.to-top:hover{background:var(--cyan);border-color:var(--cyan);color:#04121a}
.to-top__arrow{transition:transform var(--dur) var(--ease)}
.to-top:hover .to-top__arrow{transform:translateY(-3px)}

/* ============ 9. BUTTONS ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:44px;padding:11px 20px;border:1px solid var(--layer);border-radius:2px;
  font-size:14px;letter-spacing:.06em;color:var(--paper);background:rgba(20,42,82,.35);
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn:hover{border-color:var(--cyan);background:rgba(34,245,224,.12);color:var(--cyan);transform:translateY(-1px)}
.btn--primary{background:var(--cyan);border-color:var(--cyan);color:#04121a;font-weight:500}
.btn--primary:hover{background:transparent;color:var(--cyan)}
.btn--signal{border-color:var(--orange-dim);color:var(--orange);background:rgba(255,106,26,.08)}
.btn--signal:hover{background:var(--orange);border-color:var(--orange);color:#160800}
.btn--ghost{background:transparent}
.btn__arrow{transition:transform var(--dur) var(--ease)}
.btn:hover .btn__arrow{transform:translateX(4px)}

/* ============ 10. TAGS / PANELS / MEDIA / CRUMBS ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 9px;border:1px solid var(--layer);border-radius:2px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--ice);
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.tag:hover{background:var(--cyan);border-color:var(--cyan);color:#04121a}
.tag--live{border-color:var(--orange-dim);background:rgba(255,106,26,.09);color:var(--orange)}
.tag--live:hover{background:var(--orange);border-color:var(--orange);color:#160800}
.tag--ok{border-color:var(--cyan-dim);color:var(--cyan)}

.panel{
  position:relative;z-index:0;
  padding:clamp(18px,2.4vw,30px);border:1px solid var(--layer);border-radius:3px;
  background:linear-gradient(160deg,rgba(20,42,82,.55),rgba(10,20,48,.88));
  box-shadow:0 24px 50px -40px rgba(0,0,0,.95);
}
.panel::before{
  content:"";position:absolute;inset:9px -9px -9px 9px;z-index:-1;
  border:1px solid rgba(34,245,224,.16);border-radius:3px;pointer-events:none;
}
.panel--signal::before{border-color:rgba(255,106,26,.22)}

.media{
  position:relative;overflow:hidden;
  width:100%;aspect-ratio:var(--media-ratio,16/9);
  border:1px solid var(--layer);border-radius:2px;background:var(--deep);
}
.media img,.media video{width:100%;height:100%;object-fit:cover}
.media--portrait{--media-ratio:3/4}
.media--square{--media-ratio:1/1}
.media--wide{--media-ratio:21/9}
.media--compact{--media-ratio:4/3}
.media__caption{
  position:absolute;left:0;right:0;bottom:0;margin:0;padding:10px 14px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--cyan);
  background:linear-gradient(0deg,rgba(5,10,24,.94),rgba(5,10,24,.1));
}
.media__tag{
  position:absolute;top:10px;left:10px;z-index:2;
  padding:4px 9px;border:1px solid var(--orange-dim);border-radius:2px;
  background:rgba(5,10,24,.75);color:var(--orange);
  font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;
}
.media__scan{
  position:absolute;inset:0;z-index:1;pointer-events:none;opacity:.5;
  background:repeating-linear-gradient(180deg,rgba(191,227,255,.055) 0 1px,transparent 1px 5px);
}

.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:rgba(191,227,255,.55);
}
.crumbs a{color:rgba(191,227,255,.75);transition:color var(--dur) var(--ease)}
.crumbs a:hover{color:var(--cyan)}
.crumbs__sep{color:var(--edge)}
.crumbs [aria-current="page"]{color:var(--cyan)}

/* ============ 11. REVEAL ============ */
.js-ready [data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity 320ms var(--ease),transform 320ms var(--ease);
}
.js-ready [data-reveal].is-revealed{opacity:1;transform:none}

/* ============ 12. RESPONSIVE ============ */
@media (max-width:1080px){
  .arena-header__inner{grid-template-columns:minmax(0,1fr) auto;min-height:var(--header-h)}
  .nav-toggle{display:inline-flex}
  .arena-nav{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;
    padding:16px 20px 26px;
    background:linear-gradient(180deg,#081228,#050A18 72%);
    border-bottom:1px solid var(--layer);
    box-shadow:0 34px 54px -34px #000;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    max-height:calc(100vh - var(--header-h));overflow-y:auto;
    transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur);
  }
  .arena-header[data-open] .arena-nav,
  .arena-nav[data-open]{opacity:1;visibility:visible;transform:none}
  .arena-nav__list{flex-direction:column;gap:0;border-top:1px solid var(--edge)}
  .arena-nav__item{border-bottom:1px solid var(--edge)}
  .arena-nav__link{
    justify-content:space-between;align-items:center;
    padding:14px 12px;font-size:15px;border-left:2px solid transparent;
  }
  .arena-nav__link::after{display:none}
  .arena-nav__link[aria-current="page"]{background:linear-gradient(90deg,rgba(34,245,224,.16),transparent)}
  .arena-nav__quick{margin-top:18px;padding-left:0;border-left:0;flex-wrap:wrap;gap:8px}
  .quick-chip{padding:7px 12px}
}
@media (max-width:960px){
  .arena-footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .arena-footer__brand{grid-column:1 / -1}
  .arena-footer__contact{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:600px){
  .arena-brand__tagline{display:none}
  .arena-footer__grid{grid-template-columns:1fr;gap:26px}
  .arena-footer__contact{grid-template-columns:1fr;gap:16px}
  .arena-footer__legal{flex-direction:column;align-items:flex-start}
  .btn{width:100%}
}

/* ============ 13. MOTION SAFETY ============ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
  .js-ready [data-reveal]{opacity:1;transform:none}
  .arena-header__progress{transition:none}
}