:root{
  --deep-space:#0B1E3C;
  --electric-green:#00FFAA;
  --metal-silver:#C0C8D0;
  --dark-gold:#B08A4A;
  --china-red:#E23D3D;
  --deep-teal:#0F5953;
  --wine-red:#6E1B34;
  --indigo:#3A2466;
  --text-light:#F2F4F8;
  --text-mist:#E8EAED;
  --font-head:'Noto Sans SC','Arial Black','PingFang SC','Microsoft YaHei',sans-serif;
  --font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-mono:'Roboto Mono','Consolas','Courier New',monospace;
  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:32px;
  --space-5:48px;
  --space-6:64px;
  --space-7:96px;
  --container:1280px;
  --container-pad:24px;
  --header-height:72px;
  --ease:cubic-bezier(.25,.46,.45,.94);
  --duration:.25s;
  --transition:var(--duration) var(--ease);
}
*,
*::before,
*::after{
  box-sizing:border-box;
}
*{
  margin:0;
  padding:0;
}
html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-height) + 8px);
}
body{
  min-height:100vh;
  display:flex;
  flex-direction:column;
  font-family:var(--font-body);
  font-size:1rem;
  line-height:1.6;
  color:var(--text-light);
  background:var(--deep-space);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body,
h1,h2,h3,h4,h5,h6,
p,
ul,ol,
figure,
blockquote,
dl,
dd{
  margin:0;
  padding:0;
}
ul,ol{
  list-style:none;
}
a{
  color:inherit;
  text-decoration:none;
}
button{
  font:inherit;
  color:inherit;
  background:none;
  border:none;
  cursor:pointer;
}
address{
  font-style:normal;
}
img,
picture,
svg,
canvas,
video{
  display:block;
  max-width:100%;
  height:auto;
}
img{
  object-fit:cover;
}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-head);
  font-weight:900;
  line-height:1.15;
  letter-spacing:.02em;
  overflow-wrap:break-word;
}
h1,h2,h3{
  text-wrap:balance;
}
p{
  overflow-wrap:break-word;
}

:focus-visible{
  outline:2px solid var(--electric-green);
  outline-offset:3px;
  border-radius:2px;
}

#main-content{
  flex:1 0 auto;
  scroll-margin-top:calc(var(--header-height) + 8px);
  outline:none;
}

/* ============ Header ============ */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:200;
  height:var(--header-height);
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background var(--transition),border-color var(--transition),box-shadow var(--transition);
}
.site-header.is-solid{
  background:rgba(11,30,60,.97);
  border-bottom-color:rgba(192,200,208,.15);
  box-shadow:0 8px 28px rgba(0,0,0,.35);
}
.header-shell{
  height:var(--header-height);
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--container-pad);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--space-4);
}

.skip-link{
  position:absolute;
  top:8px;
  left:8px;
  z-index:300;
  padding:10px 20px;
  background:var(--electric-green);
  color:var(--deep-space);
  font-family:var(--font-head);
  font-weight:900;
  font-size:.875rem;
  letter-spacing:.04em;
  border-radius:4px;
  transform:translateY(-240%);
  transition:transform var(--transition);
}
.skip-link:focus-visible{
  transform:translateY(0);
  outline:2px solid var(--dark-gold);
  outline-offset:2px;
}

.brand-logo{
  display:inline-flex;
  align-items:center;
  gap:12px;
  line-height:1;
  flex-shrink:0;
}
.brand-mark{
  position:relative;
  flex-shrink:0;
  width:14px;
  height:14px;
  border:2px solid var(--electric-green);
  border-radius:50% 50% 50% 2px;
  transform:rotate(-45deg);
}
.brand-mark::after{
  content:'';
  position:absolute;
  top:50%;
  left:50%;
  width:4px;
  height:4px;
  background:var(--electric-green);
  border-radius:50%;
  transform:translate(-50%,-50%);
}
.brand-name{
  font-family:var(--font-head);
  font-size:1.25rem;
  font-weight:900;
  letter-spacing:.08em;
  color:var(--text-light);
  white-space:nowrap;
}
.brand-tagline{
  font-family:var(--font-head);
  font-size:.75rem;
  font-weight:500;
  letter-spacing:.16em;
  color:var(--text-mist);
  padding-left:12px;
  border-left:1px solid rgba(192,200,208,.25);
  white-space:nowrap;
}

.header-nav{
  display:flex;
  align-items:center;
  gap:var(--space-4);
}
.nav-list{
  display:flex;
  align-items:center;
  gap:2px;
}
.nav-list a{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:8px 12px;
  font-family:var(--font-head);
  font-size:.9375rem;
  font-weight:700;
  letter-spacing:.04em;
  color:rgba(242,244,248,.82);
  transition:color var(--transition);
}
.nav-list a::after{
  content:'';
  position:absolute;
  left:12px;
  right:12px;
  bottom:2px;
  height:2px;
  background:var(--electric-green);
  transform:scaleX(0);
  transform-origin:right center;
  transition:transform var(--transition);
}
.nav-list a:hover,
.nav-list a:focus-visible{
  color:var(--text-light);
}
.nav-list a:hover::after,
.nav-list a:focus-visible::after{
  transform:scaleX(1);
  transform-origin:left center;
}
.nav-list a[aria-current="page"]{
  color:var(--electric-green);
  text-shadow:0 0 18px rgba(0,255,170,.25);
}
.nav-list a[aria-current="page"]::after{
  transform:scaleX(1);
  transform-origin:left center;
}

.nav-contact{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:8px 16px 8px 14px;
  border:1px solid rgba(192,200,208,.25);
  border-radius:999px;
  font-family:var(--font-mono);
  font-size:.8125rem;
  letter-spacing:.04em;
  color:var(--metal-silver);
  white-space:nowrap;
  transition:border-color var(--transition),color var(--transition),background var(--transition);
}
.nav-contact:hover,
.nav-contact:focus-visible{
  border-color:rgba(0,255,170,.5);
  color:var(--electric-green);
  background:rgba(0,255,170,.06);
}
.contact-pulse{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--electric-green);
  animation:contact-pulse 2.5s ease-out infinite;
}
@keyframes contact-pulse{
  0%{ box-shadow:0 0 0 0 rgba(0,255,170,.5);}
  70%{ box-shadow:0 0 0 7px rgba(0,255,170,0);}
  100%{ box-shadow:0 0 0 0 rgba(0,255,170,0);}
}

.nav-toggle{
  display:none;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  width:44px;
  height:44px;
  border:1px solid transparent;
  border-radius:4px;
  transition:border-color var(--transition),background var(--transition);
}
.nav-toggle:hover{
  border-color:rgba(0,255,170,.3);
  background:rgba(0,255,170,.05);
}
.toggle-bar{
  display:block;
  width:22px;
  height:2px;
  background:var(--electric-green);
  border-radius:2px;
  transition:transform var(--transition),opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(1){
  transform:translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(2){
  opacity:0;
}
.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(3){
  transform:translateY(-7px) rotate(-45deg);
}

.scroll-progress{
  position:absolute;
  bottom:0;
  left:0;
  right:0;
  height:3px;
  background:rgba(192,200,208,.1);
  pointer-events:none;
  overflow:hidden;
}
.scroll-progress-bar{
  display:block;
  width:0%;
  height:100%;
  background:linear-gradient(90deg,var(--electric-green) 0%,var(--dark-gold) 100%);
  transition:width .12s linear;
}

/* ============ Footer ============ */
.site-footer{
  flex-shrink:0;
  position:relative;
  z-index:10;
}
.footer-band{
  position:relative;
  height:20px;
  background:linear-gradient(90deg,var(--wine-red) 0%,var(--indigo) 55%,var(--deep-space) 100%);
  clip-path:polygon(0 0,100% 0,100% 100%,0 45%);
  overflow:hidden;
}
.footer-band::after{
  content:'';
  position:absolute;
  inset:0;
  background:repeating-linear-gradient(-45deg,transparent 0 16px,rgba(0,255,170,.08) 16px 20px);
  pointer-events:none;
}
.footer-main{
  position:relative;
  background:linear-gradient(180deg,var(--deep-space) 0%,#07101F 100%);
}
.footer-main::before{
  content:'';
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(192,200,208,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(192,200,208,.04) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
.footer-main .footer-shell{
  position:relative;
  display:grid;
  grid-template-columns:1.2fr .9fr 1fr;
  gap:var(--space-6);
  max-width:var(--container);
  margin:0 auto;
  padding:var(--space-6) var(--container-pad);
}
.brand-logo--footer .brand-mark{
  border-color:var(--dark-gold);
}
.brand-logo--footer .brand-mark::after{
  background:var(--dark-gold);
}
.footer-about{
  margin-top:var(--space-3);
  font-size:.9375rem;
  line-height:1.7;
  color:var(--text-mist);
  max-width:40ch;
}
.footer-trust{
  margin-top:var(--space-4);
  padding:14px 18px;
  font-size:.8125rem;
  line-height:1.7;
  color:rgba(192,200,208,.75);
  background:rgba(176,138,74,.08);
  border-left:3px solid var(--dark-gold);
  max-width:44ch;
}
.footer-heading{
  font-size:.8125rem;
  font-weight:800;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--electric-green);
  margin-bottom:var(--space-3);
  position:relative;
  padding-left:14px;
  line-height:1.4;
}
.footer-heading::before{
  content:'';
  position:absolute;
  left:0;
  top:2px;
  bottom:2px;
  width:4px;
  background:var(--dark-gold);
  clip-path:polygon(0 0,100% 25%,100% 75%,0 100%);
}
.footer-links{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:2px 20px;
}
.footer-links a{
  display:inline-block;
  padding:5px 0;
  font-size:.9375rem;
  line-height:1.4;
  color:var(--text-mist);
  transition:color var(--transition),transform var(--transition);
}
.footer-links a:hover,
.footer-links a:focus-visible{
  color:var(--electric-green);
  transform:translateX(3px);
}
.footer-links a[aria-current="page"]{
  color:var(--electric-green);
}
.footer-contact-list li{
  display:flex;
  flex-direction:column;
  gap:2px;
  padding:10px 0;
  border-bottom:1px solid rgba(192,200,208,.1);
  font-family:var(--font-mono);
  font-size:.875rem;
  color:var(--metal-silver);
  line-height:1.4;
}
.footer-contact-list li:last-child{
  border-bottom:none;
}
.contact-label{
  font-family:var(--font-head);
  font-size:.6875rem;
  font-weight:700;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--dark-gold);
}
.footer-bottom{
  position:relative;
  background:#080E1C;
  border-top:1px solid rgba(192,200,208,.12);
}
.footer-legal{
  max-width:var(--container);
  margin:0 auto;
  padding:var(--space-2) var(--container-pad);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--space-2);
  font-size:.8125rem;
  line-height:1.6;
  color:rgba(192,200,208,.7);
}

/* ============ Container & Section ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--container-pad);
}
.section{
  padding-top:var(--space-7);
  padding-bottom:var(--space-7);
}

/* ============ Buttons ============ */
.button{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 28px;
  border:2px solid var(--electric-green);
  background:transparent;
  color:var(--electric-green);
  font-family:var(--font-head);
  font-size:.9375rem;
  font-weight:800;
  letter-spacing:.05em;
  line-height:1.4;
  text-align:center;
  cursor:pointer;
  border-radius:2px;
  transition:background var(--transition),color var(--transition),border-color var(--transition),box-shadow var(--transition),transform var(--transition);
}
.button:hover{
  background:rgba(0,255,170,.08);
  box-shadow:inset 0 -3px 0 var(--electric-green);
}
.button:active{
  transform:translateY(1px);
}
.button:focus-visible{
  outline-offset:4px;
}
.button--primary{
  background:var(--electric-green);
  color:var(--deep-space);
  border-color:var(--electric-green);
}
.button--primary:hover{
  background:var(--dark-gold);
  border-color:var(--dark-gold);
  color:var(--deep-space);
  box-shadow:none;
}
.button--ghost{
  border-color:var(--metal-silver);
  color:var(--metal-silver);
}
.button--ghost:hover{
  border-color:var(--electric-green);
  color:var(--electric-green);
  box-shadow:none;
}

/* ============ Breadcrumb ============ */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:4px;
  margin-bottom:var(--space-4);
  font-size:.875rem;
  color:var(--text-mist);
}
.breadcrumb li{
  display:flex;
  align-items:center;
  gap:4px;
}
.breadcrumb li+li::before{
  content:'//';
  font-family:var(--font-mono);
  font-size:.75rem;
  color:var(--dark-gold);
  margin-right:4px;
}
.breadcrumb a{
  color:var(--metal-silver);
  transition:color var(--transition);
}
.breadcrumb a:hover,
.breadcrumb a:focus-visible{
  color:var(--electric-green);
}
.breadcrumb [aria-current="page"]{
  color:var(--text-light);
  font-weight:700;
}

/* ============ Grid ============ */
.grid{
  display:grid;
  gap:var(--space-5);
}
.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));
}

/* ============ Cards & Tags ============ */
.folder-card{
  position:relative;
  background:linear-gradient(160deg,var(--deep-teal) 0%,#0A3B36 100%);
  border:1px solid rgba(192,200,208,.16);
  border-radius:4px 14px 14px 4px;
  padding:var(--space-5) var(--space-4);
  transition:transform var(--transition),border-color var(--transition),box-shadow var(--transition);
}
.folder-card::before{
  content:'';
  position:absolute;
  top:-1px;
  bottom:-1px;
  left:-1px;
  width:4px;
  background:var(--electric-green);
  border-radius:4px 0 0 4px;
}
.folder-card:hover{
  transform:translateY(-4px);
  border-color:rgba(0,255,170,.3);
  box-shadow:0 12px 28px rgba(0,0,0,.25);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  font-family:var(--font-head);
  font-size:.75rem;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--metal-silver);
  border:1px solid rgba(192,200,208,.3);
  border-radius:999px;
  line-height:1.5;
}
.tag--green{
  color:var(--electric-green);
  border-color:rgba(0,255,170,.35);
}
.tag--gold{
  color:var(--dark-gold);
  border-color:rgba(176,138,74,.45);
}
.tag--red{
  color:var(--china-red);
  border-color:rgba(226,61,61,.4);
}

/* ============ Data Display ============ */
.data-number{
  font-family:var(--font-mono);
  font-size:1.25em;
  font-weight:700;
  line-height:1.1;
  letter-spacing:-.02em;
  color:var(--electric-green);
  font-variant-numeric:tabular-nums;
}
.data-label{
  display:inline-block;
  font-family:var(--font-head);
  font-size:.75rem;
  font-weight:700;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--dark-gold);
}

/* ============ Media ============ */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16/9;
  background:linear-gradient(135deg,#152A4A 0%,var(--deep-teal) 100%);
  border-radius:4px;
}
.media>img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.media:hover>img{
  transform:scale(1.02);
}
.media::after{
  content:'';
  position:absolute;
  inset:0;
  border:1px solid rgba(192,200,208,.18);
  border-radius:inherit;
  pointer-events:none;
}
.media--portrait{
  aspect-ratio:4/5;
}
.media--square{
  aspect-ratio:1/1;
}

/* ============ Notice ============ */
.notice{
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:16px 20px;
  background:rgba(226,61,61,.1);
  border:1px solid rgba(226,61,61,.35);
  border-left:4px solid var(--china-red);
  border-radius:4px;
  color:var(--text-light);
  font-size:.9375rem;
  line-height:1.6;
}
.notice::before{
  content:'!';
  flex-shrink:0;
  display:flex;
  align-items:center;
  justify-content:center;
  width:22px;
  height:22px;
  margin-top:2px;
  background:var(--china-red);
  border-radius:50%;
  font-family:var(--font-head);
  font-weight:900;
  font-size:.875rem;
  color:#fff;
}

/* ============ Data Table ============ */
.data-table{
  width:100%;
  border-collapse:collapse;
  font-family:var(--font-mono);
  font-size:.875rem;
}
.data-table th,
.data-table td{
  padding:12px 16px;
  text-align:left;
}
.data-table thead th{
  font-family:var(--font-head);
  font-size:.75rem;
  font-weight:700;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--dark-gold);
  border-bottom:2px solid rgba(192,200,208,.25);
  white-space:nowrap;
}
.data-table tbody td{
  border-bottom:1px solid rgba(192,200,208,.1);
  color:var(--text-light);
  font-variant-numeric:tabular-nums;
}
.data-table tbody tr{
  transition:background var(--transition);
}
.data-table tbody tr:hover{
  background:rgba(0,255,170,.05);
}
.data-table .num{
  text-align:right;
  font-weight:700;
  color:var(--electric-green);
}

/* ============ Expandable ============ */
details.expand{
  border:1px solid rgba(192,200,208,.16);
  background:rgba(15,89,83,.4);
  border-radius:4px;
}
details.expand summary{
  cursor:pointer;
  padding:14px 18px;
  font-family:var(--font-head);
  font-size:.9375rem;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  transition:color var(--transition);
}
details.expand summary::-webkit-details-marker{
  display:none;
}
details.expand summary::after{
  content:'+';
  font-family:var(--font-mono);
  font-size:1.125rem;
  color:var(--electric-green);
  transition:transform var(--transition);
}
details.expand[open] summary{
  color:var(--electric-green);
}
details.expand[open] summary::after{
  transform:rotate(45deg);
}
details.expand .expand-body{
  padding:4px 18px 18px;
  color:var(--text-mist);
  font-size:.9375rem;
  line-height:1.7;
}

/* ============ Reveal ============ */
html[data-js] [data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity var(--transition),transform var(--transition);
}
html[data-js] [data-reveal].is-revealed{
  opacity:1;
  transform:translateY(0);
}

/* ============ Responsive ============ */
@media (max-width:1024px){
  .header-nav{
    gap:var(--space-2);
  }
  .nav-list a{
    font-size:.875rem;
    padding:8px 10px;
  }
  .grid--4{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .footer-main .footer-shell{
    gap:var(--space-5);
  }
}

@media (max-width:900px){
  :root{
    --header-height:60px;
    --container-pad:20px;
  }
  .site-header{
    background:rgba(11,30,60,.96);
    border-bottom-color:rgba(192,200,208,.12);
  }
  .brand-tagline{
    display:none;
  }
  .nav-toggle{
    display:inline-flex;
  }
  .header-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:rgba(11,30,60,.99);
    border-bottom:3px solid var(--electric-green);
    padding:12px 16px 24px;
    max-height:calc(100vh - var(--header-height));
    overflow-y:auto;
    box-shadow:0 20px 40px rgba(0,0,0,.4);
  }
  .header-nav[data-open]{
    display:flex;
  }
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .nav-list a{
    padding:14px 8px;
    font-size:1rem;
    width:100%;
    border-bottom:1px solid rgba(192,200,208,.12);
  }
  .nav-list a::after{
    left:8px;
    right:auto;
    width:0;
    transform:none;
    transition:width var(--transition);
  }
  .nav-list a:hover::after,
  .nav-list a:focus-visible::after,
  .nav-list a[aria-current="page"]::after{
    width:24px;
    transform:none;
  }
  .nav-contact{
    margin-top:16px;
    justify-content:center;
    width:100%;
  }
  .grid--3{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .footer-main .footer-shell{
    grid-template-columns:1fr;
    padding-top:var(--space-5);
    padding-bottom:var(--space-5);
  }
  .footer-links{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
}

@media (max-width:600px){
  .grid--2,
  .grid--3,
  .grid--4{
    grid-template-columns:1fr;
  }
  .footer-links{
    grid-template-columns:1fr;
  }
  .footer-legal{
    flex-direction:column;
    text-align:center;
    gap:4px;
  }
  .section{
    padding-top:var(--space-5);
    padding-bottom:var(--space-5);
  }
}

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