/* ============ RESET & DESIGN TOKENS ============ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --c-deep:#0B1E3A;
  --c-card:#12263F;
  --c-neon:#39FF14;
  --c-silver:#C0C0C0;
  --c-gold:#FFD700;
  --c-text:#FFFFFF;
  --c-text2:#B8C0CC;
  --c-line:#1E3A5F;
  --c-err:#FF4D4F;
  --f-heading:'Archivo Black','Arial Black',-apple-system,BlinkMacSystemFont,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --f-body:'Inter',-apple-system,BlinkMacSystemFont,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --f-data:'Roboto Mono','SFMono-Regular',Menlo,Consolas,'Courier New',monospace;
  --container:1200px;
  --gutter:clamp(20px,4vw,48px);
  --header-h:76px;
  --radius:20px;
  --radius-sm:12px;
  --radius-pill:999px;
  --ease:cubic-bezier(.22,1,.36,1);
  --speed:.3s
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--f-body);
  font-size:16px;
  line-height:1.6;
  color:var(--c-text);
  background:var(--c-deep);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden
}
h1,h2,h3,h4{
  font-family:var(--f-heading);
  font-weight:700;
  line-height:1.2;
  letter-spacing:-.01em
}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
::selection{background:var(--c-neon);color:var(--c-deep)}
:focus{outline:none}
:focus-visible{
  outline:2px solid var(--c-neon);
  outline-offset:2px;
  border-radius:4px
}

/* ============ LAYOUT UTILITIES ============ */
.container{
  max-width:calc(var(--container) + var(--gutter)*2);
  margin:0 auto;
  padding:0 var(--gutter)
}
.section{
  padding:80px 0
}
.section-head{
  display:flex;
  align-items:flex-end;
  gap:20px;
  margin-bottom:40px;
  flex-wrap:wrap
}
.section-index{
  font-family:var(--f-data);
  font-size:14px;
  color:var(--c-gold);
  letter-spacing:.12em;
  white-space:nowrap;
  padding-bottom:6px
}
.section-title{
  font-size:clamp(28px,4vw,42px);
  line-height:1.2
}
.section-desc{
  color:var(--c-text2);
  font-size:15px;
  flex-basis:100%
}
.divider-h{
  height:1px;
  background:linear-gradient(90deg,var(--c-line),transparent);
  border:none;
  margin:32px 0
}

/* ============ BUTTONS & CHIPS ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 26px;
  border-radius:var(--radius-pill);
  font-family:var(--f-body);
  font-size:15px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:transform var(--speed) var(--ease),box-shadow var(--speed) var(--ease),background var(--speed) var(--ease),border-color var(--speed) var(--ease),color var(--speed) var(--ease);
  cursor:pointer
}
.btn:hover{
  transform:translateY(-2px)
}
.btn:active{
  transform:translateY(0)
}
.btn-neon{
  background:var(--c-neon);
  color:#0B1E3A;
  box-shadow:0 4px 24px rgba(57,255,20,.28)
}
.btn-neon:hover{
  box-shadow:0 6px 32px rgba(57,255,20,.42)
}
.btn-ghost{
  border:1px solid var(--c-silver);
  color:var(--c-silver);
  background:transparent
}
.btn-ghost:hover{
  border-color:var(--c-neon);
  color:var(--c-neon);
  box-shadow:0 0 20px rgba(57,255,20,.1)
}
.btn-gold{
  background:var(--c-gold);
  color:#0B1E3A;
  box-shadow:0 4px 20px rgba(255,215,0,.25)
}
.btn-gold:hover{
  box-shadow:0 6px 28px rgba(255,215,0,.4)
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 14px;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--radius-pill);
  font-size:13px;
  color:var(--c-text2)
}
.chip-gold{
  border-color:var(--c-gold);
  color:var(--c-gold);
  background:rgba(255,215,0,.08)
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:4px 14px;
  font-family:var(--f-data);
  font-size:12px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--c-silver);
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--radius-pill)
}
.badge::before{
  content:'';
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--c-neon);
  box-shadow:0 0 8px rgba(57,255,20,.7);
  flex:none
}

/* ============ CARDS & EXHIBIT ============ */
.card{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--radius);
  padding:28px;
  transition:transform var(--speed) var(--ease),box-shadow var(--speed) var(--ease),border-color var(--speed) var(--ease)
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:0 12px 40px rgba(0,0,0,.35);
  border-color:rgba(57,255,20,.4)
}
.card-accent{
  border-left:4px solid var(--c-neon)
}
.card-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:24px
}
.card-plate{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--radius-sm);
  padding:20px 24px;
  position:relative
}
.card-plate::before{
  content:'';
  position:absolute;
  top:0;
  left:24px;
  right:24px;
  height:1px;
  background:linear-gradient(90deg,var(--c-neon),transparent)
}
.exhibit-zone{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--radius);
  padding:40px;
  margin:32px 0
}
.exhibit-label{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--f-data);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--c-silver);
  padding:4px 0;
  margin-bottom:16px
}
.exhibit-label::before{
  content:'';
  width:18px;
  height:2px;
  background:var(--c-neon);
  flex:none
}

/* ============ DATA DISPLAY ============ */
.data{
  font-family:var(--f-data);
  font-size:16px;
  color:var(--c-text);
  letter-spacing:.04em
}
.data-lg{
  font-family:var(--f-data);
  font-size:42px;
  line-height:1.1;
  color:var(--c-neon);
  font-weight:500
}
.data-label{
  font-family:var(--f-data);
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:.1em;
  color:var(--c-text2)
}

/* ============ BREADCRUMB ============ */
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:14px;
  color:var(--c-text2);
  padding:16px 0
}
.breadcrumb a{
  color:var(--c-silver);
  transition:color var(--speed)
}
.breadcrumb a:hover{
  color:var(--c-neon)
}
.breadcrumb-sep{
  color:var(--c-line);
  font-family:var(--f-data)
}

/* ============ SKIP LINK ============ */
.skip-link{
  position:fixed;
  top:-100px;
  left:16px;
  z-index:1000;
  background:var(--c-neon);
  color:#0B1E3A;
  padding:10px 24px;
  border-radius:var(--radius-pill);
  font-weight:700;
  font-size:14px;
  box-shadow:0 4px 24px rgba(57,255,20,.4);
  transition:top .2s var(--ease)
}
.skip-link:focus-visible{
  top:12px
}

/* ============ SCROLL PROGRESS ============ */
.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  z-index:999;
  width:0%;
  height:3px;
  background:linear-gradient(90deg,var(--c-neon),#7AFF6E);
  box-shadow:0 0 12px rgba(57,255,20,.5);
  pointer-events:none
}

/* ============ HEADER ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(11,30,58,.88);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line)
}
.site-header::before{
  content:'';
  position:absolute;
  inset:0;
  background:repeating-linear-gradient(115deg,transparent 0,transparent 22px,rgba(57,255,20,.03) 22px,rgba(57,255,20,.03) 24px);
  pointer-events:none
}
.site-header::after{
  content:'';
  position:absolute;
  bottom:-1px;
  left:0;
  right:0;
  height:2px;
  background:linear-gradient(90deg,var(--c-neon) 0,var(--c-neon) 140px,rgba(57,255,20,.3) 180px,transparent 260px);
  pointer-events:none
}
.header-inner{
  max-width:calc(var(--container) + var(--gutter)*2);
  margin:0 auto;
  padding:0 var(--gutter);
  height:var(--header-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  position:relative;
  z-index:1
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  position:relative;
  padding:8px 0;
  flex:none
}
.brand::after{
  content:'';
  position:absolute;
  bottom:-2px;
  left:120px;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--c-gold);
  box-shadow:0 0 12px rgba(255,215,0,.6)
}
.brand-logo{
  width:44px;
  height:44px;
  flex:none
}
.brand-lockup{
  display:flex;
  flex-direction:column;
  line-height:1.1
}
.brand-name{
  font-family:var(--f-heading);
  font-size:20px;
  font-weight:700;
  letter-spacing:.02em;
  white-space:nowrap
}
.brand-code{
  font-family:var(--f-data);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--c-silver);
  white-space:nowrap
}

/* ============ NAVIGATION ============ */
.site-nav{
  display:flex;
  align-items:center;
  gap:20px
}
.nav-list{
  display:flex;
  align-items:center;
  gap:4px
}
.nav-link{
  display:inline-block;
  padding:10px 16px;
  font-size:15px;
  font-weight:500;
  color:var(--c-text);
  border-radius:8px;
  position:relative;
  transition:color var(--speed) var(--ease),background var(--speed) var(--ease)
}
.nav-link::before{
  content:'';
  position:absolute;
  inset:0;
  background:transparent;
  clip-path:polygon(7px 0,100% 0,calc(100% - 7px) 100%,0 100%);
  transition:background var(--speed) var(--ease);
  z-index:-1;
  border-radius:6px
}
.nav-link:hover{
  color:var(--c-neon)
}
.nav-link:hover::before{
  background:rgba(57,255,20,.1)
}
.nav-link[aria-current="page"]{
  color:var(--c-gold)
}
.nav-link[aria-current="page"]::after{
  content:'';
  position:absolute;
  left:50%;
  transform:translateX(-50%);
  bottom:4px;
  width:20px;
  height:2px;
  border-radius:2px;
  background:var(--c-gold);
  box-shadow:0 0 8px rgba(255,215,0,.5)
}
.nav-cta{
  margin-left:8px;
  padding:11px 20px;
  font-size:14px;
  flex:none
}

/* ============ NAV TOGGLE ============ */
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:10px;
  background:var(--c-card);
  border:1px solid var(--c-line);
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  transition:border-color var(--speed) var(--ease),background var(--speed) var(--ease)
}
.nav-toggle:hover{
  border-color:var(--c-neon)
}
.nav-toggle:focus-visible{
  outline:2px solid var(--c-neon);
  outline-offset:2px
}
.nav-toggle-bar{
  display:block;
  width:20px;
  height:2px;
  border-radius:2px;
  background:var(--c-text);
  transition:transform var(--speed) var(--ease),opacity var(--speed) var(--ease),background var(--speed) var(--ease)
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){
  transform:translateY(7px) rotate(45deg);
  background:var(--c-neon)
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){
  opacity:0
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3){
  transform:translateY(-7px) rotate(-45deg);
  background:var(--c-neon)
}

/* ============ MOBILE NAV STATE ============ */
@media (max-width:960px){
  .nav-toggle{
    display:flex
  }
  .site-nav{
    position:absolute;
    top:calc(var(--header-h) - 1px);
    left:0;
    right:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:var(--c-card);
    border-bottom:1px solid var(--c-line);
    box-shadow:0 24px 40px rgba(0,0,0,.4);
    padding:12px var(--gutter) 20px;
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s
  }
  .site-nav[data-open="true"]{
    opacity:1;
    visibility:visible;
    transform:translateY(0)
  }
  .header-inner{
    height:64px
  }
  .brand-name{
    font-size:18px
  }
  .brand-logo{
    width:38px;
    height:38px
  }
  .brand::after{
    left:104px
  }
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin-bottom:8px
  }
  .nav-link{
    display:block;
    padding:14px 16px;
    border-bottom:1px solid rgba(30,58,95,.6);
    border-radius:0;
    font-size:16px
  }
  .nav-link::before{
    display:none
  }
  .nav-link[aria-current="page"]::after{
    left:16px;
    transform:none;
    bottom:auto;
    top:50%;
    width:4px;
    height:4px;
    border-radius:50%;
    margin-top:-2px
  }
  .nav-cta{
    margin:12px 0 0;
    justify-content:center
  }
}

/* ============ FOOTER ============ */
.site-footer{
  position:relative;
  background:linear-gradient(180deg,var(--c-deep) 0%,#060F1F 100%);
  border-top:1px solid var(--c-line);
  overflow:hidden
}
.site-footer::before{
  content:'';
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:2px;
  background:linear-gradient(90deg,var(--c-neon) 0,var(--c-neon) 100px,var(--c-gold) 140px,transparent 200px);
  opacity:.5
}
.site-footer::after{
  content:'';
  position:absolute;
  bottom:0;
  right:0;
  width:360px;
  height:180px;
  background:radial-gradient(ellipse at 100% 100%,rgba(57,255,20,.06),transparent 70%);
  pointer-events:none
}
.footer-main{
  max-width:calc(var(--container) + var(--gutter)*2);
  margin:0 auto;
  padding:64px var(--gutter) 40px;
  display:grid;
  grid-template-columns:1.5fr 1fr 1.3fr;
  gap:48px;
  position:relative;
  z-index:1
}
.footer-brand{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:12px
}
.footer-logo{
  width:40px;
  height:40px
}
.footer-name{
  font-family:var(--f-heading);
  font-size:24px;
  font-weight:700
}
.footer-desc{
  font-size:14px;
  line-height:1.7;
  color:var(--c-text2);
  max-width:36em
}
.footer-heading{
  font-family:var(--f-heading);
  font-size:14px;
  font-weight:700;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--c-gold);
  margin-bottom:18px;
  position:relative;
  padding-bottom:10px
}
.footer-heading::after{
  content:'';
  position:absolute;
  left:0;
  bottom:0;
  width:28px;
  height:2px;
  background:var(--c-gold);
  opacity:.6
}
.footer-list{
  display:flex;
  flex-direction:column;
  gap:10px
}
.footer-link{
  display:inline-block;
  font-size:14px;
  color:var(--c-text2);
  transition:color var(--speed),transform var(--speed) var(--ease)
}
.footer-link:hover{
  color:var(--c-neon);
  transform:translateX(4px)
}
.footer-contact{
  display:flex;
  flex-direction:column;
  gap:10px
}
.contact-line{
  font-size:14px;
  color:var(--c-text2);
  line-height:1.6
}
.footer-btn{
  margin-top:14px;
  align-self:flex-start;
  padding:9px 22px;
  font-size:13px
}
.footer-bottom{
  max-width:calc(var(--container) + var(--gutter)*2);
  margin:0 auto;
  padding:20px var(--gutter) 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  border-top:1px solid rgba(30,58,95,.5);
  position:relative;
  z-index:1
}
.copyright{
  font-family:var(--f-data);
  font-size:12px;
  color:var(--c-text2)
}
.icp{
  font-family:var(--f-data);
  font-size:12px;
  color:var(--c-silver)
}
.footer-legal{
  display:flex;
  align-items:center;
  gap:20px
}
.footer-legal .footer-link{
  font-size:13px
}

/* ============ BACK TOP ============ */
.back-top{
  position:fixed;
  right:28px;
  bottom:28px;
  z-index:90;
  width:46px;
  height:46px;
  border-radius:50%;
  background:var(--c-card);
  border:1px solid var(--c-line);
  color:var(--c-silver);
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 8px 30px rgba(0,0,0,.4);
  opacity:0;
  visibility:hidden;
  transform:translateY(14px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s,border-color .3s var(--ease),color .3s var(--ease),box-shadow .3s var(--ease);
  cursor:pointer
}
.back-top svg{
  width:20px;
  height:20px
}
.back-top.is-visible{
  opacity:1;
  visibility:visible;
  transform:translateY(0)
}
.back-top:hover{
  border-color:var(--c-neon);
  color:var(--c-neon);
  box-shadow:0 0 28px rgba(57,255,20,.25)
}
.back-top:focus-visible{
  outline:2px solid var(--c-neon);
  outline-offset:2px
}

/* ============ REVEAL ============ */
[data-reveal]{
  opacity:0;
  transform:translateY(28px);
  transition:opacity .7s var(--ease),transform .7s var(--ease);
  will-change:opacity,transform
}
[data-reveal="visible"]{
  opacity:1;
  transform:translateY(0)
}

/* ============ FORM BASICS ============ */
.input,.textarea{
  width:100%;
  padding:12px 16px;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--radius-sm);
  color:var(--c-text);
  font-family:var(--f-body);
  font-size:15px;
  transition:border-color var(--speed),box-shadow var(--speed)
}
.input:focus,.textarea:focus{
  outline:none;
  border-color:var(--c-neon);
  box-shadow:0 0 0 3px rgba(57,255,20,.12)
}
.input::placeholder,.textarea::placeholder{
  color:var(--c-text2);
  opacity:.6
}

/* ============ RESPONSIVE ============ */
@media (max-width:960px){
  :root{
    --header-h:64px
  }
  .section{
    padding:56px 0
  }
  .footer-main{
    grid-template-columns:1fr;
    gap:36px;
    padding:48px var(--gutter) 32px
  }
  .footer-bottom{
    flex-direction:column;
    align-items:flex-start;
    gap:8px;
    padding-bottom:20px
  }
  .back-top{
    right:18px;
    bottom:18px;
    width:42px;
    height:42px
  }
}
@media (max-width:640px){
  .section-title{
    font-size:26px
  }
  .footer-main{
    grid-template-columns:1fr;
    padding:40px var(--gutter) 28px
  }
  .brand-name{
    font-size:16px
  }
  .brand-code{
    font-size:10px
  }
  .brand-logo{
    width:34px;
    height:34px
  }
  .brand::after{
    left:94px;
    width:5px;
    height:5px
  }
  .btn{
    padding:11px 20px;
    font-size:14px
  }
}

/* ============ REDUCED MOTION ============ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important
  }
  [data-reveal]{
    opacity:1;
    transform:none;
    transition:none
  }
  .back-top{
    transition:none
  }
  .scroll-progress{
    transition:none
  }
}