*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;font-size:16px}
main,article,aside,figure,figcaption,footer,header,nav,section{display:block}
body{margin:0}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}
ul[class],ol[class]{list-style:none;padding:0;margin:0}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}

:root{
  --primary:#0B1B3A;
  --primary-alt:#102A4E;
  --accent-green:#39FF88;
  --accent-orange:#FF6B35;
  --cream:#F5F1E6;
  --dark-brown:#1A1710;
  --soft-white:#EAEAF2;
  --muted-blue:#3A5A8A;
  --signal-red:#E04F5F;
  --font-display:"Noto Sans SC","DIN Alternate","PingFang SC","Microsoft YaHei",sans-serif;
  --font-heading:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Serif SC","Songti SC","SimSun",serif;
  --font-index:"Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --header-width:300px;
  --header-h:80px;
  --max-read:1280px;
}

body{
  background-color:var(--primary);
  background-image:linear-gradient(120deg,rgba(255,255,255,0.025) 1px,transparent 1px);
  background-size:32px 32px;
  color:var(--soft-white);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
}

::selection{background:var(--accent-orange);color:var(--primary)}

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

h1,h2,h3,h4{
  font-family:var(--font-heading);
  font-weight:700;
  line-height:1.25;
  color:var(--soft-white);
}

#main-content{display:block;scroll-margin-top:var(--header-h)}

.container{
  width:100%;
  max-width:var(--max-read);
  margin-inline:auto;
  padding-inline:clamp(20px,4vw,56px);
}

.section{
  position:relative;
  padding:clamp(56px,7vw,112px) 0;
}

.section-dark{
  background-color:var(--primary);
  background-image:linear-gradient(120deg,rgba(255,255,255,0.02) 1px,transparent 1px);
  background-size:32px 32px;
  color:var(--soft-white);
}

.section-cream{
  background-color:var(--cream);
  color:var(--dark-brown);
}

.section-cream h1,
.section-cream h2,
.section-cream h3,
.section-cream h4{color:var(--dark-brown)}

.section-cream .index-label{color:var(--muted-blue)}

.section-head{
  display:flex;
  align-items:baseline;
  gap:16px;
  margin-bottom:28px;
}

.section-index{
  font-family:var(--font-index);
  font-size:13px;
  letter-spacing:0.1em;
  color:var(--accent-orange);
}

.section-title{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.5rem,3vw,2.4rem);
  line-height:1.1;
  margin:0;
}

.section-cream .section-title{color:inherit}

.section-line{
  flex:1;
  height:1px;
  align-self:center;
  background:linear-gradient(90deg,var(--muted-blue),transparent);
}

.section-cream .section-line{background:linear-gradient(90deg,rgba(26,23,16,0.35),transparent)}

.page-header{
  padding:clamp(48px,7vw,96px) 0 24px;
  border-bottom:1px solid rgba(58,90,138,0.3);
  margin-bottom:clamp(32px,5vw,64px);
}

.page-index{
  font-family:var(--font-index);
  font-size:13px;
  letter-spacing:0.12em;
  color:var(--accent-orange);
}

.page-title{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(2.2rem,6vw,4.4rem);
  line-height:1.05;
  letter-spacing:-0.02em;
  margin:10px 0 16px;
}

.page-lead{
  max-width:58ch;
  font-size:clamp(1.05rem,1.8vw,1.25rem);
  line-height:1.75;
  color:var(--muted-blue);
}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0;
  padding:0;
  font-family:var(--font-index);
  font-size:13px;
  color:var(--muted-blue);
}

.breadcrumb a{color:var(--soft-white);text-decoration:none;transition:color 0.2s}
.breadcrumb a:hover{color:var(--accent-green)}
.breadcrumb [aria-current="page"]{color:var(--accent-green)}

.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:12px 20px;
  border:2px solid transparent;
  background:transparent;
  font-family:var(--font-heading);
  font-size:14px;
  font-weight:700;
  line-height:1;
  text-decoration:none;
  cursor:pointer;
  transition:background-color 0.2s,color 0.2s,border-color 0.2s,transform 0.15s;
}

.btn-label{line-height:1.1;display:inline-block}

.btn-arrow{font-size:16px;line-height:1;transition:transform 0.2s}

.btn:hover .btn-arrow{transform:translateX(4px)}

.btn-accent{
  background:var(--accent-orange);
  border-color:var(--accent-orange);
  color:var(--primary);
}

.btn-accent:hover,
.btn-accent:focus-visible{
  background:transparent;
  color:var(--accent-orange);
}

.btn-green{
  background:var(--accent-green);
  border-color:var(--accent-green);
  color:var(--primary);
}

.btn-green:hover,
.btn-green:focus-visible{
  background:transparent;
  color:var(--accent-green);
}

.btn-ghost{
  border-color:var(--muted-blue);
  color:var(--soft-white);
}

.btn-ghost:hover,
.btn-ghost:focus-visible{
  border-color:var(--accent-green);
  color:var(--accent-green);
}

.btn-pulse{
  --pulse-color:var(--accent-orange);
  position:relative;
}

.btn-green.btn-pulse{--pulse-color:var(--accent-green)}

.btn-pulse::after{
  content:"";
  position:absolute;
  inset:-5px;
  border:2px solid var(--pulse-color,var(--accent-orange));
  animation:btn-pulse 2.2s cubic-bezier(0.4,0,0.6,1) infinite;
  opacity:0;
}

@keyframes btn-pulse{
  0%{opacity:0.55;transform:scale(1)}
  70%,100%{opacity:0;transform:scale(1.06,1.28)}
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  font-family:var(--font-index);
  font-size:12px;
  line-height:1.4;
  color:var(--muted-blue);
  border:1px solid rgba(58,90,138,0.5);
  clip-path:polygon(6px 0,100% 0,calc(100% - 6px) 100%,0 100%);
}

.tag::before{
  content:"◼";
  font-size:7px;
  line-height:1;
}

.tag-green{
  color:var(--accent-green);
  border-color:rgba(57,255,136,0.4);
  background:rgba(57,255,136,0.08);
}

.tag-orange{
  color:var(--accent-orange);
  border-color:rgba(255,107,53,0.45);
  background:rgba(255,107,53,0.08);
}

.index-label{
  display:inline-block;
  font-family:var(--font-index);
  font-size:12px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--muted-blue);
}

.card{
  padding:26px 24px;
  background:var(--primary-alt);
  border:1px solid rgba(58,90,138,0.4);
  transition:border-color 0.2s,background-color 0.2s,box-shadow 0.2s;
}

.card:hover,
.card:focus-within{
  border-color:rgba(57,255,136,0.5);
  box-shadow:0 0 0 1px rgba(57,255,136,0.2);
}

.card-cream{
  background:var(--cream);
  color:var(--dark-brown);
  border-color:rgba(26,23,16,0.12);
}

.card-cream h1,
.card-cream h2,
.card-cream h3,
.card-cream h4{color:var(--dark-brown)}

.card-cream:hover,
.card-cream:focus-within{
  border-color:var(--accent-orange);
  box-shadow:0 0 0 1px rgba(255,107,53,0.25);
}

.card-dark{
  background:var(--primary);
  border-color:rgba(58,90,138,0.45);
}

.card + .card{margin-top:16px}

.chamfer{
  clip-path:polygon(20px 0,100% 0,100% calc(100% - 20px),calc(100% - 20px) 100%,0 100%,0 20px);
}

.chamfer-sm{
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
}

.media{
  position:relative;
  overflow:hidden;
  background-color:var(--primary-alt);
  background-image:linear-gradient(120deg,rgba(255,255,255,0.04) 1px,transparent 1px);
  background-size:24px 24px;
  aspect-ratio:16 / 9;
}

.media-cover{
  width:100%;
  height:100%;
  object-fit:cover;
}

.media-caption{
  position:absolute;
  left:0;
  bottom:0;
  z-index:1;
  padding:6px 14px;
  font-family:var(--font-index);
  font-size:12px;
  color:var(--soft-white);
  background:rgba(11,27,58,0.78);
  clip-path:polygon(8px 0,100% 0,calc(100% - 8px) 100%,0 100%);
}

.visually-hidden{
  position:absolute;
  width:1px;
  height:1px;
  margin:-1px;
  padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
  border:0;
}

.skip-link{
  position:fixed;
  top:0;
  left:max(20px,5vw);
  z-index:500;
  display:inline-flex;
  align-items:center;
  padding:12px 24px;
  background:var(--accent-green);
  color:var(--primary);
  font-family:var(--font-heading);
  font-weight:700;
  font-size:14px;
  text-decoration:none;
  transform:translateY(-120%);
  transition:transform 0.2s;
}

.skip-link:focus-visible{
  transform:translateY(0);
}

.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--primary);
  border-bottom:1px solid rgba(58,90,138,0.45);
}

.header-inner{
  display:grid;
  grid-template-areas:
    "brand toggle"
    "badge badge";
  grid-template-columns:1fr auto;
  align-items:center;
  gap:4px 12px;
  padding:8px 16px;
}

.brand{
  grid-area:brand;
  display:flex;
  align-items:center;
  gap:12px;
  min-width:0;
}

.brand-link{
  display:flex;
  align-items:center;
  gap:12px;
  text-decoration:none;
  min-width:0;
}

.brand-mark{
  display:grid;
  place-items:center;
  flex:0 0 auto;
  width:38px;
  height:38px;
  font-family:var(--font-display);
  font-weight:900;
  font-size:17px;
  background:var(--accent-orange);
  color:var(--primary);
  clip-path:polygon(11px 0,100% 0,100% calc(100% - 11px),calc(100% - 11px) 100%,0 100%,0 11px);
}

.brand-copy{
  display:flex;
  flex-direction:column;
  gap:2px;
  min-width:0;
}

.brand-name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:18px;
  line-height:1.1;
  color:var(--soft-white);
  white-space:nowrap;
}

.brand-desc{
  font-family:var(--font-heading);
  font-size:10px;
  letter-spacing:0.14em;
  color:var(--muted-blue);
}

.version-badge{
  grid-area:badge;
  justify-self:start;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:3px 10px;
  font-family:var(--font-index);
  font-size:11px;
  line-height:1.3;
  color:var(--accent-green);
  background:rgba(57,255,136,0.08);
  border:1px solid rgba(57,255,136,0.35);
  clip-path:polygon(6px 0,100% 0,calc(100% - 6px) 100%,0 100%);
}

.version-badge::before{
  content:"●";
  font-size:8px;
  color:var(--accent-green);
}

.nav-toggle{
  grid-area:toggle;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 10px;
  border:1px solid rgba(58,90,138,0.5);
  color:var(--soft-white);
  font-family:var(--font-heading);
  font-size:14px;
  font-weight:700;
  transition:border-color 0.2s,color 0.2s;
}

.nav-toggle:hover,
.nav-toggle:focus-visible{
  border-color:var(--accent-green);
  color:var(--accent-green);
}

.nav-toggle-box{
  display:grid;
  gap:4px;
  width:16px;
}

.nav-toggle-bar{
  display:block;
  height:2px;
  background:currentColor;
  transition:transform 0.2s ease,opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){transform:scaleX(0);opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.nav-toggle-label{
  line-height:1;
  white-space:nowrap;
}

.site-nav{
  position:fixed;
  top:var(--header-h);
  left:0;
  bottom:0;
  z-index:150;
  width:min(86vw,360px);
  padding:20px 16px 32px;
  overflow-y:auto;
  background:var(--primary-alt);
  border-right:1px solid rgba(58,90,138,0.5);
  transform:translateX(-102%);
  visibility:hidden;
  transition:transform 0.28s ease,visibility 0.28s;
}

.site-nav[data-open]{
  transform:translateX(0);
  visibility:visible;
}

.nav-link{
  display:flex;
  align-items:center;
  gap:14px;
  padding:14px 16px;
  text-decoration:none;
  color:var(--soft-white);
  font-family:var(--font-heading);
  font-size:16px;
  font-weight:700;
  border-left:3px solid transparent;
  transition:background-color 0.2s,border-left-color 0.2s,color 0.2s;
}

.nav-index{
  flex:0 0 auto;
  min-width:28px;
  font-family:var(--font-index);
  font-size:12px;
  font-weight:400;
  color:var(--muted-blue);
  transition:color 0.2s;
}

.nav-name{
  flex:0 0 auto;
  white-space:nowrap;
}

.nav-line{display:none}

.nav-link:hover,
.nav-link:focus-visible{
  color:var(--accent-green);
  background:rgba(57,255,136,0.06);
}

.nav-link:hover .nav-index,
.nav-link:focus-visible .nav-index{
  color:var(--accent-green);
}

.nav-link[aria-current="page"]{
  color:var(--accent-green);
  border-left-color:var(--accent-orange);
  background:rgba(57,255,136,0.08);
}

.nav-link[aria-current="page"] .nav-index{
  color:var(--accent-orange);
}

.header-meta{display:none}

.nav-backdrop{
  position:fixed;
  top:var(--header-h);
  right:0;
  bottom:0;
  left:0;
  z-index:140;
  background:rgba(11,27,58,0.65);
  opacity:0;
  visibility:hidden;
  transition:opacity 0.25s ease,visibility 0.25s ease;
}

.nav-backdrop.is-visible{
  opacity:1;
  visibility:visible;
}

.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:4px;
  z-index:450;
  background:linear-gradient(90deg,var(--accent-green),var(--accent-orange));
  transform:scaleX(0);
  transform-origin:left;
  pointer-events:none;
}

@media (min-width:1024px){
  body{margin-left:var(--header-width)}

  #main-content{scroll-margin-top:0}

  .site-header{
    position:fixed;
    top:0;
    left:0;
    bottom:0;
    width:var(--header-width);
    height:100vh;
    overflow-y:auto;
    scrollbar-width:thin;
    border-right:1px solid rgba(58,90,138,0.4);
    background-color:var(--primary);
    background-image:linear-gradient(120deg,rgba(255,255,255,0.02) 1px,transparent 1px);
    background-size:24px 24px;
  }

  .site-header::after{
    content:"";
    position:absolute;
    right:-1px;
    bottom:0;
    width:30px;
    height:30px;
    background:var(--accent-orange);
    clip-path:polygon(0 0,100% 100%,0 100%);
  }

  .header-inner{
    display:flex;
    flex-direction:column;
    align-items:stretch;
    min-height:100%;
    padding:30px 20px 22px;
  }

  .brand{
    display:flex;
    align-items:center;
    gap:12px;
  }

  .brand-copy{
    flex-direction:row;
    align-items:baseline;
    gap:8px;
  }

  .brand-name{font-size:24px}

  .brand-desc{font-size:11px}

  .version-badge{
    align-self:flex-start;
    margin-top:14px;
    order:1;
  }

  .nav-toggle{display:none}

  .site-nav{
    position:static;
    top:auto;
    left:auto;
    bottom:auto;
    width:auto;
    z-index:auto;
    padding:28px 0 20px;
    overflow:visible;
    background:transparent;
    border-right:0;
    transform:none;
    visibility:visible;
    display:flex;
    flex-direction:column;
    gap:2px;
    order:2;
  }

  .nav-link{
    padding:12px 14px;
    font-size:15px;
    border-left:2px solid transparent;
  }

  .nav-line{
    display:block;
    flex:1;
    height:1px;
    background:linear-gradient(90deg,var(--muted-blue),transparent);
    transform:scaleX(0.55);
    transform-origin:left;
    transition:transform 0.25s ease,background-color 0.25s ease;
  }

  .nav-link:hover .nav-line,
  .nav-link:focus-visible .nav-line{
    transform:scaleX(1);
    background:linear-gradient(90deg,var(--accent-green),transparent);
  }

  .nav-link[aria-current="page"] .nav-line{
    transform:scaleX(1);
    background:linear-gradient(90deg,var(--accent-orange),var(--accent-green));
  }

  .header-meta{
    display:block;
    margin-top:auto;
    padding-top:20px;
    border-top:1px solid rgba(58,90,138,0.35);
    order:3;
  }

  .header-coord{
    margin-bottom:8px;
  }

  .header-trust{
    margin:0;
  }

  .nav-backdrop{display:none}
}

.header-coord{
  font-family:var(--font-index);
  font-size:11px;
  letter-spacing:0.08em;
  color:var(--muted-blue);
}

.header-trust{
  font-family:var(--font-body);
  font-size:12px;
  line-height:1.65;
  color:var(--muted-blue);
}

.site-footer{
  position:relative;
  background-color:var(--primary);
  background-image:linear-gradient(120deg,rgba(255,255,255,0.02) 1px,transparent 1px);
  background-size:32px 32px;
  color:var(--soft-white);
}

.site-footer::before{
  content:"";
  display:block;
  height:4px;
  background:linear-gradient(90deg,var(--accent-green) 0%,var(--accent-green) 40%,var(--accent-orange) 100%);
}

.footer-inner{
  max-width:var(--max-read);
  margin-inline:auto;
  padding:56px 48px 112px;
}

.footer-top{
  display:grid;
  grid-template-columns:1.2fr 1fr 1.2fr;
  gap:48px;
  padding-bottom:48px;
}

.footer-logo{
  display:inline-flex;
  align-items:center;
  gap:12px;
  text-decoration:none;
}

.footer-logo-mark{
  display:grid;
  place-items:center;
  flex:0 0 auto;
  width:40px;
  height:40px;
  font-family:var(--font-display);
  font-weight:900;
  font-size:18px;
  background:var(--accent-green);
  color:var(--primary);
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
}

.footer-logo-text{
  font-family:var(--font-display);
  font-weight:900;
  font-size:20px;
  color:var(--soft-white);
}

.footer-about{
  margin-top:18px;
  max-width:36ch;
  font-size:14px;
  line-height:1.7;
  color:var(--muted-blue);
}

.footer-address{
  margin-top:10px;
  font-size:13px;
  line-height:1.6;
  color:var(--muted-blue);
}

.footer-links{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}

.footer-links-col{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:4px;
}

.footer-heading{
  font-family:var(--font-index);
  font-size:11px;
  font-weight:700;
  letter-spacing:0.16em;
  text-transform:uppercase;
  color:var(--accent-green);
  margin-bottom:12px;
}

.footer-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 0;
  font-family:var(--font-heading);
  font-size:14px;
  font-weight:500;
  color:var(--soft-white);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color 0.2s,border-color 0.2s;
}

.footer-link::before{
  content:"→";
  font-size:12px;
  color:var(--accent-orange);
  transition:color 0.2s,transform 0.2s;
}

.footer-link:hover{
  color:var(--accent-green);
  border-color:rgba(57,255,136,0.4);
}

.footer-link:hover::before{
  color:var(--accent-green);
  transform:translateX(4px);
}

.footer-transfer{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  justify-content:space-between;
  gap:24px;
  padding:28px 24px 24px;
  background:var(--primary-alt);
  border:1px solid rgba(58,90,138,0.45);
  clip-path:polygon(18px 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%,0 18px);
}

.footer-trust{
  font-size:13px;
  line-height:1.75;
  color:var(--soft-white);
}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 24px;
  padding:18px 0 0;
  border-top:1px solid rgba(58,90,138,0.35);
  font-family:var(--font-index);
  font-size:12px;
  color:var(--muted-blue);
}

.footer-copyright,
.footer-contact,
.footer-icp{
  margin:0;
}

.footer-contact{
  color:var(--soft-white);
}

.footer-icp{
  margin-left:auto;
}

.footer-icp-link{
  color:var(--muted-blue);
  text-decoration:none;
  transition:color 0.2s;
}

.footer-icp-link:hover,
.footer-icp-link:focus-visible{
  color:var(--accent-green);
}

.transfer-float{
  position:fixed;
  right:20px;
  bottom:20px;
  z-index:120;
  display:none;
}

.transfer-float-link{
  padding:14px 22px;
  font-size:15px;
  box-shadow:0 12px 28px rgba(255,107,53,0.35);
}

.back-top{
  position:fixed;
  right:24px;
  bottom:88px;
  z-index:110;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:4px;
  padding:10px 12px;
  background:var(--primary-alt);
  border:1px solid rgba(58,90,138,0.5);
  color:var(--soft-white);
  font-family:var(--font-heading);
  font-size:11px;
  line-height:1;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity 0.25s,visibility 0.25s,transform 0.25s,border-color 0.2s,color 0.2s;
}

.back-top.is-visible{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}

.back-top:hover,
.back-top:focus-visible{
  border-color:var(--accent-green);
  color:var(--accent-green);
}

.back-top-icon{
  font-size:16px;
  line-height:1;
}

.back-top-label{
  line-height:1.2;
  white-space:nowrap;
}

@media (min-width:768px){
  .transfer-float{
    display:block;
  }
}

@media (max-width:1023px){
  .site-header::after{
    display:none;
  }

  .footer-inner{
    padding:40px 24px 96px;
  }

  .footer-top{
    grid-template-columns:1fr 1fr;
    gap:32px 24px;
    padding-bottom:40px;
  }

  .footer-transfer{
    grid-column:1 / -1;
  }

  .footer-bottom{
    padding:18px 0 0;
  }
}

@media (max-width:639px){
  .footer-top{
    grid-template-columns:1fr;
  }

  .footer-bottom{
    flex-direction:column;
    align-items:flex-start;
    gap:6px 0;
  }

  .footer-icp{
    margin-left:0;
  }
}

@media (prefers-reduced-motion:reduce){
  html{
    scroll-behavior:auto;
  }

  *,
  *::before,
  *::after{
    animation-duration:0.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:0.01ms !important;
    scroll-behavior:auto !important;
  }

  .btn-pulse::after{
    animation:none;
    opacity:0;
  }
}