/* =========================================================
   HX Site Kit / 夜间战术面板
   深海蓝 · 炭灰渐变 · 信号橙 · 荧光青绿
   ========================================================= */

:root{
  --deep-sea:#071A2F;
  --charcoal:#111820;
  --tactic:#0E3A5C;
  --paper:#F2F5F7;
  --signal:#FF6A2A;
  --mint:#3BF0C8;
  --elec:#4CC9FF;
  --fog:#9BAAB8;
  --warm:#FF8A4C;
  --alert:#FF5C7A;

  --line:rgba(76,201,255,.16);
  --line-strong:rgba(76,201,255,.32);
  --hair:rgba(155,170,184,.18);
  --surface:rgba(14,58,92,.45);
  --surface-deep:rgba(9,24,39,.78);

  --font-head:"Barlow Condensed","Oswald","Arial Narrow","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --rail-w:104px;
  --topbar-h:67px;
  --radius:2px;
  --ease:cubic-bezier(.22,.8,.3,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scrollbar-color:var(--tactic) transparent}
body{
  margin:0;
  min-height:100vh;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  background-color:var(--charcoal);
  background-image:
    radial-gradient(1100px 560px at 84% -8%, rgba(14,58,92,.85), transparent 62%),
    radial-gradient(900px 520px at 2% 104%, rgba(7,26,47,.95), transparent 64%),
    linear-gradient(158deg,#071A2F 0%,#0A1A29 46%,#111820 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(76,201,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(76,201,255,.055) 1px,transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:radial-gradient(130% 92% at 50% 0%,#000 0%,rgba(0,0,0,.55) 58%,transparent 100%);
  mask-image:radial-gradient(130% 92% at 50% 0%,#000 0%,rgba(0,0,0,.55) 58%,transparent 100%);
}
img,svg,video{display:block;max-width:100%}
a{color:var(--elec);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--mint)}
button{font:inherit;color:inherit}
h1,h2,h3,h4,h5{margin:0;font-family:var(--font-head);font-weight:700;line-height:1.1;letter-spacing:-.01em}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
dl,dd{margin:0}
:focus-visible{outline:2px solid var(--mint);outline-offset:3px}
::selection{background:rgba(59,240,200,.28);color:#fff}

/* ---------- layout utilities ---------- */
.wrap{width:min(1200px,100% - 40px);margin-inline:auto}
#main-content{position:relative;z-index:1;display:block}
.section{position:relative;padding:clamp(48px,7vw,96px) 0}
.section--tight{padding:clamp(30px,4vw,56px) 0}
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}

/* ---------- typography ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.28em;
  text-transform:uppercase;color:var(--mint);
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--signal)}
.section-title{
  font-size:clamp(28px,3.4vw,42px);
  line-height:1.12;
  transform:scaleX(.97);
  transform-origin:left center;
}
.lede{font-size:clamp(15px,1.15vw,17px);line-height:1.8;color:rgba(242,245,247,.82);max-width:64ch}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:20px 0 0;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--fog);
}
.crumbs li{display:flex;align-items:center;gap:10px}
.crumbs li+li::before{content:"/";color:rgba(155,170,184,.4)}
.crumbs a{color:var(--fog)}
.crumbs a:hover{color:var(--mint)}
.crumbs [aria-current="page"]{color:var(--paper)}

/* ---------- data components ---------- */
.panel{
  position:relative;
  padding:clamp(20px,2.4vw,28px);
  background:linear-gradient(158deg,rgba(14,58,92,.55),rgba(10,26,42,.78));
  border:1px solid var(--line);
  border-radius:var(--radius);
}
.panel::before{
  content:"";position:absolute;top:-1px;left:-1px;width:34px;height:34px;
  border-top:2px solid var(--mint);border-left:2px solid var(--mint);
  opacity:.65;pointer-events:none;
}
.stat{
  display:block;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1;
  color:var(--mint);
  text-shadow:0 0 18px rgba(59,240,200,.35);
}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;
  color:var(--elec);
  background:rgba(76,201,255,.08);
  border:1px solid rgba(76,201,255,.35);
  border-radius:var(--radius);
}
.tag--alert{color:var(--alert);border-color:rgba(255,92,122,.4);background:rgba(255,92,122,.08)}

/* ---------- media containers ---------- */
.media{
  position:relative;
  overflow:hidden;
  isolation:isolate;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(148deg,#0E3A5C,#08192A 72%);
}
.media::before{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background-image:
    linear-gradient(rgba(76,201,255,.09) 1px,transparent 1px),
    linear-gradient(90deg,rgba(76,201,255,.09) 1px,transparent 1px);
  background-size:40px 40px;
  opacity:.65;
}
.media img{width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:16/9}
.media--square{aspect-ratio:1/1}
.media--tall{aspect-ratio:4/5}
.media--band{aspect-ratio:21/9}
.media--placeholder::after{
  content:"DATA VISUAL";
  position:absolute;inset:0;z-index:2;
  display:grid;place-items:center;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.34em;
  color:rgba(155,170,184,.7);
}
.media-caption{
  display:block;margin-top:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--fog);
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:9px 16px;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-family:var(--font-body);
  font-size:13px;font-weight:600;letter-spacing:.06em;line-height:1.2;
  text-decoration:none;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-ghost{color:var(--paper);border-color:var(--line-strong);background:rgba(76,201,255,.05)}
.btn-ghost:hover,.btn-ghost:focus-visible{color:var(--mint);border-color:rgba(59,240,200,.55);background:rgba(59,240,200,.1)}
.btn-signal{
  background:linear-gradient(115deg,var(--signal),var(--warm));
  color:#08111B;font-weight:700;
  box-shadow:0 8px 20px -12px rgba(255,106,42,.95);
}
.btn-signal:hover,.btn-signal:focus-visible{
  color:#08111B;transform:translateY(-1px);
  box-shadow:0 12px 26px -12px rgba(255,106,42,1);
}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:300;
  padding:10px 18px;
  background:var(--mint);color:#04202B;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  border-radius:var(--radius);
  transform:translateY(-180%);
  transition:transform .18s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0);color:#04202B}

/* =========================================================
   HEADER
   ========================================================= */
.site-header{position:relative;z-index:60}
.header-top{
  position:sticky;top:0;z-index:60;
  background:rgba(6,18,31,.88);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-top::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,var(--signal),rgba(255,106,42,0) 30%,rgba(59,240,200,0) 62%,var(--mint));
  opacity:.75;pointer-events:none;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px}

.brand{display:inline-flex;align-items:center;gap:14px;min-width:0;color:var(--paper)}
.brand:hover{color:var(--paper)}
.brand-glyph{display:flex;flex-direction:column;justify-content:center;gap:4px;width:26px;flex:0 0 auto;transform:skewX(-18deg)}
.glyph-bar{display:block;height:3px;background:var(--signal)}
.glyph-bar:nth-child(1){width:100%}
.glyph-bar:nth-child(2){width:58%;background:var(--mint);align-self:flex-end}
.glyph-bar:nth-child(3){width:84%;background:var(--elec)}
.brand-copy{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-name{font-family:var(--font-head);font-size:21px;font-weight:700;letter-spacing:.01em;transform:scaleX(.96);transform-origin:left center}
.brand-descriptor{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;
  color:var(--fog);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.header-actions{display:flex;align-items:center;gap:10px}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:9px 12px;
  background:rgba(14,58,92,.42);
  border:1px solid var(--line-strong);
  border-radius:var(--radius);
  color:var(--paper);
  font-size:12px;letter-spacing:.14em;cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:rgba(59,240,200,.5);color:var(--mint);background:rgba(59,240,200,.08)}
.nav-toggle-box{display:flex;flex-direction:column;gap:4px;width:18px}
.nav-toggle-box span{display:block;height:2px;width:100%;background:currentColor;transition:transform .26s var(--ease),opacity .2s var(--ease),width .26s var(--ease)}
.nav-toggle-box span:nth-child(2){width:72%}
.nav-toggle-text{font-family:var(--font-mono);letter-spacing:.16em}
.site-header[data-open="true"] .nav-toggle-box span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle-box span:nth-child(2){opacity:0;transform:translateX(-6px)}
.site-header[data-open="true"] .nav-toggle-box span:nth-child(3){transform:translateY(-6px) rotate(-45deg);width:100%}

.scroll-meter{height:2px;background:rgba(76,201,255,.1);overflow:hidden}
.scroll-meter-fill{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--mint),var(--elec) 58%,var(--signal));transition:width .15s linear}

/* ---------- side rail nav (desktop) ---------- */
.rail{
  position:fixed;left:0;top:0;bottom:0;width:var(--rail-w);z-index:55;
  display:flex;flex-direction:column;align-items:center;justify-content:space-between;
  padding:18px 0 22px;
  background:linear-gradient(180deg,rgba(10,30,51,.98),rgba(6,17,29,.99));
  border-right:1px solid var(--line);
}
.rail::after{
  content:"";position:absolute;top:0;bottom:0;right:-1px;width:1px;
  background:linear-gradient(180deg,var(--signal),transparent 34%,transparent 66%,var(--mint));
  opacity:.6;pointer-events:none;
}
.rail-glyph{margin-bottom:18px;width:22px}
.rail-list{
  display:flex;flex-direction:column;align-items:center;gap:2px;
  width:100%;padding-block:6px;overflow-y:auto;
  scrollbar-width:none;
}
.rail-list::-webkit-scrollbar{display:none}
.rail-item{width:100%}
.rail-link{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:8px;
  width:100%;padding:14px 0;
  color:var(--fog);text-decoration:none;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.rail-link::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--mint);
  transition:height .26s var(--ease),background .2s var(--ease);
}
.rail-link:hover,.rail-link:focus-visible{color:var(--paper);background:rgba(76,201,255,.06)}
.rail-link:hover::before{height:36px}
.rail-link[aria-current="page"]{
  color:var(--mint);
  background:linear-gradient(90deg,rgba(59,240,200,.14),transparent 78%);
}
.rail-link[aria-current="page"]::before{height:56px;background:var(--signal)}
.rail-index{font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;color:rgba(155,170,184,.72)}
.rail-link[aria-current="page"] .rail-index{color:var(--signal)}
.rail-label{
  writing-mode:vertical-rl;
  text-orientation:upright;
  font-size:13px;font-weight:500;letter-spacing:.2em;white-space:nowrap;
}
.rail-foot{display:flex;flex-direction:column;align-items:center;gap:10px;padding-top:12px}
.rail-pulse{
  width:7px;height:7px;border-radius:50%;background:var(--mint);
  box-shadow:0 0 0 4px rgba(59,240,200,.14);
  animation:hx-pulse 2.8s var(--ease) infinite;
}
@keyframes hx-pulse{
  0%,100%{box-shadow:0 0 0 4px rgba(59,240,200,.14)}
  50%{box-shadow:0 0 0 9px rgba(59,240,200,.03)}
}
.rail-note{writing-mode:vertical-rl;font-family:var(--font-mono);font-size:9px;letter-spacing:.3em;color:rgba(155,170,184,.62)}

.nav-scrim{
  position:fixed;inset:0;z-index:50;
  background:rgba(4,10,18,.74);
  opacity:0;visibility:hidden;
  transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.site-header[data-open="true"] .nav-scrim{opacity:1;visibility:visible}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer{
  position:relative;z-index:1;overflow:hidden;
  background:linear-gradient(180deg,rgba(9,20,33,.96),rgba(7,26,47,.98) 58%,#050D16);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(76,201,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(76,201,255,.055) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 84%);
  mask-image:linear-gradient(180deg,#000,transparent 84%);
}
.site-footer::after{
  content:"";position:absolute;top:0;left:0;
  width:min(42%,440px);height:3px;
  background:linear-gradient(90deg,var(--signal),var(--warm),transparent);
}
.footer-top{position:relative;padding:clamp(44px,6vw,68px) 0 clamp(32px,4vw,48px)}
.footer-inner{
  position:relative;
  display:grid;grid-template-columns:minmax(220px,.9fr) minmax(0,2.1fr);
  gap:clamp(28px,4vw,52px);
}
.footer-lead{display:flex;flex-direction:column;gap:18px;align-items:flex-start}
.footer-brand{display:inline-flex;align-items:center;gap:14px;color:var(--paper)}
.footer-brand:hover{color:var(--paper)}
.footer-brand-name{
  font-family:var(--font-head);font-size:clamp(22px,2.4vw,28px);font-weight:700;
  letter-spacing:.01em;transform:scaleX(.94);transform-origin:left center;
}
.footer-tagline{
  margin:0;max-width:30ch;
  padding-left:14px;border-left:2px solid rgba(59,240,200,.5);
  color:var(--fog);font-size:14px;line-height:1.8;
}
.footer-columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(24px,3vw,36px)}
.footer-col{display:flex;flex-direction:column;gap:16px;min-width:0}
.footer-col-title{
  font-family:var(--font-mono);font-size:11px;font-weight:500;
  letter-spacing:.26em;text-transform:uppercase;color:var(--mint);
  padding-bottom:10px;border-bottom:1px solid var(--hair);
}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-link{
  display:inline-block;
  color:var(--fog);font-size:14px;line-height:1.6;
  padding-bottom:2px;
  background-image:linear-gradient(var(--mint),var(--mint));
  background-repeat:no-repeat;background-position:0 100%;background-size:0 1px;
  transition:color .2s var(--ease),background-size .25s var(--ease);
}
.footer-link:hover,.footer-link:focus-visible{color:var(--mint);background-size:100% 1px}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.contact-row{display:flex;flex-direction:column;gap:2px}
.contact-row dt{font-family:var(--font-mono);font-size:10px;letter-spacing:.22em;color:rgba(155,170,184,.78);text-transform:uppercase}
.contact-row dd{font-size:13.5px;line-height:1.6;color:var(--paper);overflow-wrap:anywhere;font-variant-numeric:tabular-nums}
.footer-service{
  margin:0;padding-top:12px;
  border-top:1px dashed var(--hair);
  font-size:12px;line-height:1.8;color:rgba(155,170,184,.88);
}
.footer-base{position:relative;border-top:1px solid var(--hair);background:rgba(3,9,16,.55)}
.footer-base-inner{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 24px;
  padding:20px 0;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--fog);
}
.footer-copy,.footer-icp{margin:0}
.footer-icp{color:rgba(155,170,184,.78)}
.footer-legal{display:flex;flex-wrap:wrap;gap:18px;margin-left:auto}
.footer-legal .footer-link{font-size:11.5px;letter-spacing:.06em;font-family:var(--font-mono)}

/* =========================================================
   MOTION
   ========================================================= */
[data-reveal]{
  opacity:0;
  transform:translateY(20px);
  transition:opacity .7s var(--ease),transform .7s var(--ease);
}
[data-reveal].is-revealed{opacity:1;transform:none}

/* =========================================================
   RESPONSIVE — tablet & mobile
   ========================================================= */
@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
  .nav-toggle{display:none}
  .nav-scrim{display:none}
}

@media (max-width:1023.98px){
  :root{--topbar-h:61px}
  .header-inner{height:58px}
  .nav-toggle{display:inline-flex}
  .header-actions .btn{padding:8px 12px;font-size:12px}

  .rail{
    top:var(--topbar-h);bottom:0;left:0;right:auto;
    width:min(84vw,320px);
    padding:22px 18px 26px;
    align-items:stretch;justify-content:flex-start;gap:18px;
    border-right:1px solid rgba(59,240,200,.22);
    box-shadow:26px 0 60px -34px #000;
    transform:translateX(-104%);
    transition:transform .34s var(--ease);
    z-index:52;overflow-y:auto;
  }
  .site-header[data-open="true"] .rail{transform:translateX(0)}
  .rail::after{display:none}
  .rail-glyph{display:none}
  .rail-list{align-items:stretch;gap:4px;overflow:visible;padding:0}
  .rail-link{
    flex-direction:row;align-items:center;justify-content:flex-start;gap:14px;
    padding:14px 14px;
    border:1px solid var(--hair);
    border-radius:var(--radius);
    background:rgba(14,58,92,.28);
  }
  .rail-link::before{top:0;transform:none;width:3px;height:0}
  .rail-link:hover::before{height:100%}
  .rail-link[aria-current="page"]::before{height:100%}
  .rail-link[aria-current="page"]{background:linear-gradient(90deg,rgba(59,240,200,.16),rgba(14,58,92,.3))}
  .rail-index{font-size:11px;min-width:22px}
  .rail-label{writing-mode:horizontal-tb;font-size:15px;letter-spacing:.08em}
  .rail-foot{flex-direction:row;align-items:center;gap:10px;margin-top:auto;padding-top:16px;border-top:1px solid var(--hair)}
  .rail-note{writing-mode:horizontal-tb;font-size:10px;letter-spacing:.24em}
  html.is-nav-open{overflow:hidden}
}

@media (max-width:900px){
  .footer-inner{grid-template-columns:minmax(0,1fr);gap:34px}
  .footer-columns{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
  .footer-col-contact{grid-column:1 / -1}
}

@media (max-width:767px){
  .header-actions .btn{display:none}
  .brand-descriptor{display:none}
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-legal{margin-left:0;width:100%}
}

@media (max-width:720px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
}

@media (max-width:600px){
  .wrap{width:calc(100% - 28px)}
  .brand-name{font-size:19px}
  .rail{width:min(90vw,340px)}
  .footer-columns{grid-template-columns:minmax(0,1fr)}
  .footer-base-inner{font-size:11px}
}

/* =========================================================
   ACCESSIBILITY
   ========================================================= */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    transition-delay:0ms !important;
  }
  [data-reveal]{opacity:1;transform:none}
  .rail-pulse{animation:none}
  .rail{transition:none}
}
@media (forced-colors:active){
  .rail-link[aria-current="page"],
  .btn,
  .panel{border:1px solid CanvasText}
}