:root{
  --deep-blue:#0a1a30;
  --competition-blue:#1b3a5c;
  --orange:#ff6b1a;
  --rock-gray:#5a5a5a;
  --moss-green:#6b8e6b;
  --terracotta:#c47c6f;
  --cream:#f5efe6;
  --light-blue-gray:#8ba8c6;
  --charcoal:#111111;
  --white:#fff;
  --font-head:"PingFang SC","Microsoft YaHei","Heiti SC",sans-serif;
  --font-body:"PingFang SC","Microsoft YaHei","Heiti SC",sans-serif;
  --font-mono:"Roboto Mono","Courier New",monospace;
  --container:1200px;
  --radius:8px;
  --clip:20px;
  --transition:0.2s cubic-bezier(0.4,0,0.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
  letter-spacing:0.01em;
  background:var(--deep-blue);
  color:var(--cream);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%}
a{color:var(--cream);text-decoration:none;transition:color var(--transition),background var(--transition)}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul{list-style:none}
:focus-visible{
  outline:3px solid var(--orange);
  outline-offset:3px;
  border-radius:2px;
}
::selection{background:var(--orange);color:var(--deep-blue)}
.skip-link{
  position:absolute;
  top:-100px;
  left:16px;
  z-index:2000;
  background:var(--orange);
  color:var(--deep-blue);
  padding:10px 18px;
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:700;
  transition:top var(--transition);
}
.skip-link:focus{top:12px}
.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;
}
.container{
  width:min(calc(100% - 40px),var(--container));
  margin-inline:auto;
}

/* ---------- page progress ---------- */
.page-progress{
  position:fixed;
  top:0;
  left:0;
  height:3px;
  width:100%;
  background:transparent;
  z-index:1100;
  pointer-events:none;
}
.page-progress[data-progress]{
  background:var(--orange);
  width:0%;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:var(--charcoal);
  border-bottom:1px solid rgba(255,255,255,0.08);
  box-shadow:0 4px 24px rgba(0,0,0,0.35);
}
.header-inner{
  display:flex;
  align-items:stretch;
  justify-content:space-between;
  max-width:var(--container);
  margin-inline:auto;
  min-height:64px;
  padding-inline:20px;
}
.site-logo{
  display:flex;
  align-items:center;
  gap:10px;
  padding-block:12px;
  flex-shrink:0;
}
.logo-mark{
  width:30px;
  height:30px;
  background:var(--orange);
  clip-path:polygon(25% 0%,100% 0%,100% 75%,75% 100%,0% 100%,0% 25%);
  box-shadow:0 0 0 2px var(--deep-blue), 0 0 0 3px rgba(255,107,26,0.4);
}
.logo-text{
  font-family:var(--font-head);
  font-size:19px;
  font-weight:900;
  letter-spacing:0.03em;
  color:var(--cream);
  line-height:1;
}
.logo-sub{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--light-blue-gray);
  border-left:1px solid var(--light-blue-gray);
  padding-left:8px;
  margin-top:3px;
  line-height:1.2;
}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;
  padding:10px;
}
.nav-toggle-line{
  display:block;
  height:2px;
  background:var(--cream);
  border-radius:2px;
  transition:transform var(--transition),opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1){
  transform:translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2){
  opacity:0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3){
  transform:translateY(-7px) rotate(-45deg);
}
.header-nav{
  display:flex;
  align-items:center;
  gap:20px;
}
.nav-list{
  display:flex;
  gap:4px;
}
.nav-link{
  position:relative;
  display:block;
  font-family:var(--font-mono);
  font-size:14px;
  letter-spacing:0.05em;
  text-transform:uppercase;
  color:var(--cream);
  padding:10px 12px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;
  right:100%;
  bottom:4px;
  height:2px;
  background:var(--orange);
  transition:right var(--transition);
}
.nav-link:hover{
  color:var(--orange);
  background:rgba(255,107,26,0.06);
}
.nav-link:hover::after{
  right:12px;
}
.nav-link[aria-current="page"]{
  color:var(--orange);
}
.nav-link[aria-current="page"]::after{
  right:12px;
}
.header-status{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:var(--cream);
  background:rgba(255,255,255,0.04);
  border-left:1px solid rgba(255,255,255,0.1);
  padding:8px 14px;
  margin-left:8px;
  border-radius:0 var(--radius) var(--radius) 0;
  white-space:nowrap;
  transition:background var(--transition);
}
.header-status:hover{
  background:rgba(107,142,107,0.15);
}
.status-dot{
  width:10px;
  height:10px;
  border-radius:50%;
  background:var(--moss-green);
  box-shadow:0 0 8px rgba(107,142,107,0.8);
  flex-shrink:0;
}
.status-badge{
  font-size:10px;
  background:var(--terracotta);
  color:var(--deep-blue);
  font-weight:700;
  padding:2px 6px;
  border-radius:3px;
}

/* ---------- header mobile ---------- */
@media (max-width:900px){
  .nav-toggle{
    display:flex;
  }
  .header-inner{
    flex-wrap:wrap;
    align-items:center;
  }
  .header-nav{
    display:none;
    width:100%;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:var(--charcoal);
    border-top:1px solid rgba(255,255,255,0.08);
    padding:10px 0 16px;
  }
  .header-nav[data-open="true"]{
    display:flex;
  }
  .nav-list{
    flex-direction:column;
    gap:0;
  }
  .nav-link{
    padding:14px 18px;
    border-bottom:1px solid rgba(255,255,255,0.05);
  }
  .nav-link::after{
    left:18px;
  }
  .header-status{
    margin:14px 18px 0;
    justify-content:flex-start;
    border-left:none;
    background:rgba(255,255,255,0.06);
    border-radius:6px;
  }
}

/* ---------- footer ---------- */
.site-footer{
  background:var(--charcoal);
  color:var(--cream);
  position:relative;
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--orange) 20%,var(--light-blue-gray) 60%,transparent);
  opacity:0.5;
}
.footer-top{
  border-bottom:1px solid rgba(255,255,255,0.07);
}
.footer-inner{
  max-width:var(--container);
  margin-inline:auto;
  padding-inline:20px;
}
.footer-inner--contact{
  display:grid;
  grid-template-columns:1.2fr 2fr 1.4fr;
  gap:40px;
  padding-block:44px 36px;
}
.footer-brand{
  display:flex;
  flex-direction:column;
  gap:6px;
}
.footer-brand-mark{
  width:40px;
  height:40px;
  background:var(--orange);
  clip-path:polygon(25% 0%,100% 0%,100% 75%,75% 100%,0% 100%,0% 25%);
  margin-bottom:8px;
}
.footer-brand strong{
  font-family:var(--font-head);
  font-size:22px;
  font-weight:900;
  letter-spacing:0.02em;
}
.footer-brand-en{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:0.1em;
  text-transform:uppercase;
  color:var(--light-blue-gray);
}
.footer-contact{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.contact-item{
  display:flex;
  flex-direction:column;
  gap:4px;
  border-left:2px solid var(--moss-green);
  padding-left:14px;
}
.contact-label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--light-blue-gray);
}
.contact-value{
  font-size:15px;
  font-weight:500;
  color:var(--cream);
}
.contact-value:hover{
  color:var(--orange);
}
.footer-note{
  display:flex;
  align-items:flex-start;
  gap:8px;
  font-size:14px;
  color:var(--cream);
  background:rgba(255,255,255,0.03);
  border-left:3px solid var(--orange);
  padding:14px;
  line-height:1.6;
}
.footer-note-icon{
  color:var(--orange);
  font-family:var(--font-mono);
  flex-shrink:0;
}
.footer-mid{
  border-bottom:1px solid rgba(255,255,255,0.07);
}
.footer-inner--links{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:24px;
  padding-block:24px;
}
.footer-links{
  display:flex;
  flex-wrap:wrap;
  gap:8px 22px;
}
.footer-links a{
  position:relative;
  font-size:14px;
  color:var(--cream);
  padding-block:4px;
}
.footer-links a::before{
  content:"→";
  font-family:var(--font-mono);
  margin-right:6px;
  color:var(--moss-green);
}
.footer-links a:hover{
  color:var(--orange);
}
.footer-links--legal{
  gap:8px 18px;
}
.footer-links--legal a::before{
  content:"↗";
}
.footer-bottom{
  background:rgba(0,0,0,0.4);
}
.footer-inner--meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 24px;
  padding-block:18px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:0.04em;
  color:var(--light-blue-gray);
}
.footer-icp{
  color:var(--cream);
}
.footer-copy{
  color:var(--light-blue-gray);
}
.footer-trust{
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.footer-trust::before{
  content:"";
  width:8px;
  height:8px;
  background:var(--moss-green);
  border-radius:50%;
  box-shadow:0 0 6px rgba(107,142,107,0.7);
}
@media (max-width:960px){
  .footer-inner--contact{
    grid-template-columns:1fr;
    gap:24px;
  }
  .footer-contact{
    grid-template-columns:repeat(3,1fr);
  }
}
@media (max-width:680px){
  .footer-contact{
    grid-template-columns:1fr;
  }
  .footer-inner--links{
    flex-direction:column;
    gap:12px;
  }
  .footer-inner--meta{
    flex-direction:column;
    text-align:center;
  }
}

/* ---------- shared components ---------- */
.panel{
  position:relative;
  background:var(--competition-blue);
  padding:32px;
  border-radius:2px;
}
.panel.clip-left{
  clip-path:polygon(20px 0%,100% 0%,100% 100%,0% 100%,0% 20px);
}
.panel.clip-right{
  clip-path:polygon(0% 0%,calc(100% - 20px) 0%,100% 20px,100% 100%,0% 100%);
}
.grid-2{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:28px;
}
.grid-3{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.grid-4{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
}
@media (max-width:900px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:600px){
  .grid-4{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .panel{padding:22px}
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:14px;
  font-weight:700;
  letter-spacing:0.05em;
  text-transform:uppercase;
  padding:12px 22px;
  border-radius:2px;
  transition:transform var(--transition),background var(--transition),color var(--transition),box-shadow var(--transition);
  line-height:1.2;
}
.btn-primary{
  background:var(--orange);
  color:var(--deep-blue);
  clip-path:polygon(10px 0%,100% 0%,100% calc(100% - 10px),calc(100% - 10px) 100%,0% 100%,0% 10px);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 20px rgba(255,107,26,0.3);
}
.btn-outline{
  border:1px solid var(--cream);
  color:var(--cream);
  background:transparent;
}
.btn-outline:hover{
  border-color:var(--orange);
  color:var(--orange);
  transform:translateY(-2px);
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:0.04em;
  color:var(--light-blue-gray);
  padding-block:14px;
}
.breadcrumb a{color:var(--cream)}
.breadcrumb a:hover{color:var(--orange)}
.breadcrumb-sep{color:var(--orange);font-size:11px}

/* ---------- logo image placeholder ---------- */
.image-frame{
  position:relative;
  background:linear-gradient(135deg,rgba(255,255,255,0.05) 0%,rgba(255,255,255,0.01) 100%);
  border:1px solid rgba(255,255,255,0.1);
  min-height:220px;
  overflow:hidden;
}
.image-frame::before{
  content:attr(data-label);
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--light-blue-gray);
  background:repeating-linear-gradient(-45deg,transparent 0 12px,rgba(255,255,255,0.02) 12px 24px);
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:0.001s !important;
    transition-duration:0.001s !important;
    scroll-behavior:auto !important;
  }
}