/* ===== 01 reset ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{max-width:100%}
button{font:inherit}
#main-content{scroll-margin-top:calc(var(--header-h) + 16px)}

/* ===== 02 tokens ===== */
:root{
  --ink-900:#070B14;
  --ink-800:#0D1422;
  --ink-700:#1B2738;
  --paper:#F2EFE7;
  --cyan:#35E6E0;
  --orange:#FF7A1A;
  --magenta:#E23C8B;
  --rock:#3A4652;
  --moss:#5F7A62;
  --clay:#B7654A;

  --line:rgba(242,239,231,.10);
  --line-strong:rgba(242,239,231,.18);
  --dim:rgba(242,239,231,.66);
  --dim-2:rgba(242,239,231,.44);

  --shell:1320px;
  --pad:clamp(16px,4vw,48px);
  --header-h:72px;

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

/* ===== 03 base ===== */
body{
  font-family:var(--font-body);
  font-size:clamp(16px,.5vw + 14px,17.5px);
  line-height:1.75;
  color:var(--paper);
  background-color:var(--ink-900);
  background-image:
    linear-gradient(to right,rgba(242,239,231,.035) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(242,239,231,.035) 1px,transparent 1px);
  background-size:96px 96px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.1;
  letter-spacing:.005em;
  font-stretch:condensed;
}
a{color:inherit;text-decoration:none}
strong{color:var(--paper)}
::selection{background:var(--orange);color:var(--ink-900)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.site-header :focus-visible,.site-footer :focus-visible{outline-offset:2px}

/* ===== 04 utilities ===== */
.container{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--pad)}
.mono{font-family:var(--font-mono);font-size:.9em;letter-spacing:.02em;font-variant-numeric:tabular-nums}
.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--cyan);
}
.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}
.prose{max-width:68ch}
.prose p + p{margin-top:1em}
.prose a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
.prose a:hover{color:var(--orange)}

.skip-link{
  position:fixed;top:8px;left:8px;z-index:200;
  transform:translateY(-160%);
  background:var(--cyan);color:var(--ink-900);
  padding:10px 16px;font-size:14px;font-weight:700;letter-spacing:.04em;
  transition:transform .15s ease;
}
.skip-link:focus{transform:translateY(0)}

/* ===== 05 grid ===== */
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,1.6vw,28px)}

/* ===== 06 header ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(13,20,34,.92);
  border-bottom:1px solid var(--line-strong);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  transition:background .18s ease,box-shadow .18s ease;
}
.site-header[data-scrolled]{background:rgba(8,13,24,.98);box-shadow:0 18px 44px rgba(3,6,12,.55)}
.site-header__inner{
  position:relative;
  width:100%;max-width:var(--shell);margin-inline:auto;
  min-height:var(--header-h);
  padding-inline:var(--pad);
  display:flex;align-items:center;justify-content:space-between;
  gap:clamp(12px,3vw,40px);
}

.brand{flex:0 0 auto;min-width:0}
.brand__link{display:inline-flex;align-items:center;gap:12px}
.brand__mark{
  display:grid;place-items:center;
  width:38px;height:38px;flex:0 0 38px;
  border:1px solid var(--cyan);
  color:var(--cyan);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;line-height:1;
  transition:background .16s ease,color .16s ease;
}
.brand__link:hover .brand__mark,.brand__link:focus-visible .brand__mark{background:var(--cyan);color:var(--ink-900)}
.brand__text{display:flex;flex-direction:column;gap:2px;min-width:0}
.brand__name{
  font-family:var(--font-display);font-weight:800;
  font-size:19px;line-height:1.1;letter-spacing:.04em;
  color:var(--paper);
}
.brand__sub{
  font-family:var(--font-mono);
  font-size:10.5px;letter-spacing:.16em;line-height:1.3;
  color:var(--dim-2);
}

.nav-zone{display:flex;align-items:center;gap:14px;min-width:0}
.site-nav{display:flex;align-items:center;gap:clamp(6px,1.2vw,18px)}
.site-nav__list{display:flex;align-items:center;gap:clamp(2px,.9vw,14px);counter-reset:navidx}
.site-nav__item{counter-increment:navidx}
.site-nav__link{
  position:relative;
  display:inline-flex;align-items:center;
  min-height:44px;padding:8px 2px;
  font-size:14px;letter-spacing:.03em;
  color:rgba(242,239,231,.78);
  transition:color .15s ease;
}
.site-nav__link::before{content:none}
.site-nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:var(--cyan);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .16s ease;
}
.site-nav__link:hover,.site-nav__link:focus-visible{color:var(--paper)}
.site-nav__link:hover::after,.site-nav__link:focus-visible::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]{color:var(--cyan)}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1);background:var(--orange)}
.site-nav__cta{margin-left:8px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 18px;
  font-family:var(--font-body);font-size:14px;font-weight:700;letter-spacing:.05em;
  border:1px solid transparent;border-radius:0;
  cursor:pointer;text-align:center;
  transition:background .16s ease,border-color .16s ease,color .16s ease,transform .16s ease;
}
.btn--primary{background:var(--orange);border-color:var(--orange);color:var(--ink-900)}
.btn--primary:hover,.btn--primary:focus-visible{background:#FF9540;border-color:#FF9540;transform:translateY(-1px)}

.nav-toggle{
  display:none;
  align-items:center;gap:9px;
  min-height:44px;min-width:44px;padding:0 12px;
  background:transparent;color:var(--paper);
  border:1px solid var(--line-strong);border-radius:0;
  font-size:13px;letter-spacing:.06em;cursor:pointer;
  transition:border-color .16s ease,color .16s ease;
}
.nav-toggle:hover,.nav-toggle:focus-visible{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle[aria-expanded="true"]{border-color:var(--orange);color:var(--orange)}
.nav-toggle__bars{position:relative;display:block;width:18px;height:12px;flex:0 0 18px}
.nav-toggle__bars span{position:absolute;left:0;width:100%;height:1.5px;background:currentColor;transition:transform .16s ease,opacity .16s ease}
.nav-toggle__bars span:nth-child(1){top:0}
.nav-toggle__bars span:nth-child(2){top:5.25px}
.nav-toggle__bars span:nth-child(3){top:10.5px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(5.25px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-5.25px) rotate(-45deg)}
.nav-toggle__label{white-space:nowrap}

.scroll-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:rgba(53,230,224,.10);pointer-events:none}
.scroll-progress__bar{
  display:block;height:100%;width:100%;
  background:linear-gradient(90deg,var(--cyan),var(--orange));
  transform:scaleX(0);transform-origin:left center;
}

/* ===== 07 footer ===== */
.site-footer{
  position:relative;
  margin-top:clamp(64px,8vw,128px);
  background:var(--ink-800);
  border-top:1px solid var(--line-strong);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;
  width:min(320px,46%);height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--orange) 72%,transparent);
}
.site-footer__inner{
  width:100%;max-width:var(--shell);margin-inline:auto;
  padding:clamp(40px,5vw,72px) var(--pad) clamp(28px,3vw,40px);
  display:grid;
  grid-template-columns:minmax(200px,1fr) minmax(0,2.4fr);
  gap:clamp(32px,5vw,80px);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.footer-brand__name{
  font-family:var(--font-display);font-weight:800;
  font-size:24px;line-height:1.1;letter-spacing:.06em;color:var(--paper);
}
.footer-brand__line{font-size:13.5px;color:var(--dim);max-width:26ch}
.footer-brand__note{font-size:12.5px;color:var(--dim-2);max-width:24ch}
.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,40px)}
.footer-col{min-width:0;border-top:1px solid var(--line);padding-top:14px}
.footer-col__title{
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--cyan);margin-bottom:12px;
}
.footer-col__note{margin-top:14px;font-size:12px;line-height:1.6;color:var(--dim-2)}
.footer-list{display:flex;flex-direction:column;gap:2px}
.footer-link{
  display:inline-block;padding:5px 0;
  font-size:13.5px;color:rgba(242,239,231,.80);
  transition:color .15s ease,transform .15s ease;
}
.footer-link:hover,.footer-link:focus-visible{color:var(--cyan)}
.footer-contact{display:flex;flex-direction:column;gap:8px}
.footer-contact__row{display:grid;grid-template-columns:52px minmax(0,1fr);gap:10px;align-items:baseline}
.footer-contact__key{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--dim-2);
}
.footer-contact__val{
  font-family:var(--font-mono);font-size:12.5px;line-height:1.55;
  color:rgba(242,239,231,.84);
  overflow-wrap:anywhere;
}
.footer-base{
  width:100%;max-width:var(--shell);margin-inline:auto;
  padding:18px var(--pad) 28px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px;
}
.footer-base__legal{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;
  color:var(--dim-2);
}
.footer-base__links{display:flex;flex-wrap:wrap;gap:18px}
.footer-base__links .footer-link{font-size:11.5px;font-family:var(--font-mono);letter-spacing:.06em;color:var(--dim-2);padding:0}
.footer-base__links .footer-link:hover,.footer-base__links .footer-link:focus-visible{color:var(--cyan)}

/* ===== 08 building blocks ===== */
.section-head{display:flex;align-items:center;gap:clamp(12px,2vw,24px);flex-wrap:wrap;margin-bottom:clamp(20px,2.4vw,32px)}
.section-head__num{
  font-family:var(--font-mono);font-size:13px;letter-spacing:.14em;
  color:var(--orange);line-height:1;
}
.section-head__title{
  font-size:clamp(24px,3vw,34px);
  color:var(--paper);
}
.section-head__rule{
  flex:1 1 120px;height:1px;
  background:linear-gradient(90deg,var(--line-strong),transparent);
}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:18px 0 0;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;
  color:var(--dim-2);
}
.breadcrumb__link{color:inherit;transition:color .15s ease}
.breadcrumb__link:hover,.breadcrumb__link:focus-visible{color:var(--cyan)}
.breadcrumb__sep{color:rgba(242,239,231,.26)}

.panel{
  background:var(--ink-800);
  border:1px solid var(--line);
  padding:clamp(18px,2vw,28px);
}
.data-card{
  display:block;
  background:var(--ink-800);
  border:1px solid var(--line);
  border-left:3px solid var(--cyan);
  padding:14px 18px;
  color:inherit;
  transition:background .16s ease,border-color .16s ease,transform .16s ease;
}
.data-card:hover,.data-card:focus-visible{
  background:var(--ink-700);
  border-left-color:var(--orange);
  transform:translateY(-2px);
}
.data-card__label{
  display:block;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--dim-2);
}
.data-card__value{
  display:block;margin-top:4px;
  font-family:var(--font-display);font-weight:800;
  font-size:22px;line-height:1.2;color:var(--paper);
}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:2px 8px;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;line-height:1.7;
  color:var(--cyan);
  background:rgba(53,230,224,.09);
  border:1px solid rgba(53,230,224,.45);
  white-space:nowrap;
}
.tag--live{color:var(--orange);background:rgba(255,122,26,.10);border-color:rgba(255,122,26,.5)}
.tag--transfer{color:var(--magenta);background:rgba(226,60,139,.12);border-color:rgba(226,60,139,.5)}
.tag--mono{color:rgba(242,239,231,.72);background:transparent;border-color:var(--line-strong)}

.media-frame{
  position:relative;overflow:hidden;
  aspect-ratio:16/9;
  background:var(--ink-700);
  border:1px solid var(--line-strong);
}
.media-frame__img{display:block;width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(7,11,20,0) 42%,rgba(7,11,20,.68) 100%);
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}
.media-frame--tall{aspect-ratio:3/4}

/* ===== 09 responsive ===== */
@media (max-width:1120px){
  .grid-12{grid-template-columns:repeat(8,minmax(0,1fr))}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;top:100%;left:0;right:0;
    display:none;
    flex-direction:column;align-items:stretch;gap:0;
    padding:6px var(--pad) 26px;
    background:var(--ink-800);
    border-bottom:1px solid var(--line-strong);
    box-shadow:0 30px 64px rgba(3,6,12,.7);
    max-height:calc(100vh - var(--header-h));
    overflow-y:auto;
  }
  .site-nav[data-open]{display:flex}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .site-nav__item + .site-nav__item{border-top:1px solid rgba(242,239,231,.08)}
  .site-nav__link{
    width:100%;padding:14px 0;min-height:52px;
    font-size:16px;color:rgba(242,239,231,.86);
  }
  .site-nav__link::before{
    content:"0" counter(navidx);
    display:inline-block;margin-right:14px;
    font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
    color:var(--rock);
  }
  .site-nav__link::after{display:none}
  .site-nav__link:hover,.site-nav__link:focus-visible{background:rgba(53,230,224,.06);color:var(--cyan)}
  .site-nav__link[aria-current="page"]{color:var(--cyan);background:rgba(53,230,224,.07)}
  .site-nav__link[aria-current="page"]::before{color:var(--orange)}
  .site-nav__cta{display:flex;width:100%;min-height:48px;margin-top:18px;margin-left:0}
  .site-footer__inner{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:repeat(3,minmax(0,1fr))}
}

@media (max-width:720px){
  :root{--header-h:64px}
  .grid-12{grid-template-columns:repeat(4,minmax(0,1fr))}
  .brand__mark{width:34px;height:34px;flex-basis:34px;font-size:11px}
  .brand__name{font-size:17px}
  .brand__sub{font-size:9.5px;letter-spacing:.1em}
  .nav-zone{gap:8px}
  .nav-toggle{padding:0 10px;font-size:12px}
  .footer-cols{grid-template-columns:1fr;gap:22px}
  .footer-base{flex-direction:column;align-items:flex-start}
  .footer-contact__row{grid-template-columns:48px minmax(0,1fr)}
  .section-head__rule{flex-basis:60px}
}

@media (max-width:420px){
  .brand__sub{display:none}
  .nav-toggle__label{display:none}
  .nav-toggle{padding:0}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .data-card:hover,.data-card:focus-visible,
  .btn--primary:hover,.btn--primary:focus-visible{transform:none}
}