:root{
  --color-bg:#0A192F;
  --color-bg-light:#112240;
  --color-accent:#FF6B35;
  --color-accent-soft:rgba(255,107,53,.14);
  --color-green:#39FF14;
  --color-text:#FFFFFF;
  --color-text-warm:#F5F0E6;
  --color-text-muted:#94A3B8;
  --color-ink:#020617;
  --font-heading:'Noto Sans SC','Source Han Sans CN','PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
  --font-body:'Noto Serif SC','Source Han Serif CN','Songti SC','STSong',Georgia,serif;
  --font-data:'Roboto Mono','JetBrains Mono','SF Mono','Menlo','Consolas',monospace;
  --header-height:72px;
  --container-max:1280px;
  --container-gutter:clamp(20px,4vw,48px);
  --space-xs:4px;
  --space-sm:8px;
  --space-md:16px;
  --space-lg:24px;
  --space-xl:32px;
  --space-2xl:48px;
  --space-3xl:72px;
  --text-xs:12px;
  --text-sm:13px;
  --text-base:16px;
  --text-lg:18px;
  --text-xl:22px;
  --text-2xl:28px;
  --text-3xl:36px;
  --text-4xl:44px;
  --text-5xl:56px;
  --transition-fast:.2s ease;
  --transition-normal:.3s ease;
  --transition-slow:.5s ease;
}
*,
*::before,
*::after{
  box-sizing:border-box;
  margin:0;
  padding:0;
}
html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
}
body{
  font-family:var(--font-body);
  font-size:var(--text-base);
  line-height:1.8;
  color:var(--color-text);
  background-color:var(--color-bg);
  background-image:
    linear-gradient(rgba(148,163,184,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(148,163,184,.04) 1px,transparent 1px);
  background-size:40px 40px;
  min-height:100vh;
  padding-top:var(--header-height);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{
  display:block;
  max-width:100%;
  height:auto;
}
a{
  color:var(--color-accent);
  text-decoration:none;
  transition:color var(--transition-fast);
}
a:hover{
  color:var(--color-green);
}
ul,ol{
  list-style:none;
  padding:0;
  margin:0;
}
button{
  font-family:inherit;
  font-size:inherit;
  border:none;
  background:none;
  color:inherit;
  cursor:pointer;
  line-height:inherit;
}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-heading);
  font-weight:800;
  line-height:1.2;
  margin:0 0 .5em;
}
:focus-visible{
  outline:2px solid var(--color-green);
  outline-offset:3px;
  border-radius:2px;
}
.visually-hidden{
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  height:1px;
  overflow:hidden;
  position:absolute;
  white-space:nowrap;
  width:1px;
}
.container{
  width:min(var(--container-max),100% - 2 * var(--container-gutter));
  margin-inline:auto;
}
#main-content{
  min-height:60vh;
}
.skip-link{
  position:fixed;
  top:-64px;
  left:16px;
  z-index:200;
  background:var(--color-accent);
  color:var(--color-ink);
  font-family:var(--font-heading);
  font-size:14px;
  font-weight:700;
  padding:12px 24px;
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px));
  transition:top var(--transition-fast);
}
.skip-link:focus{
  top:16px;
}
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:100;
  min-height:var(--header-height);
  background:linear-gradient(180deg,rgba(10,25,47,.82),rgba(2,6,23,.72));
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  transition:background var(--transition-normal),box-shadow var(--transition-normal);
}
.site-header.is-scrolled{
  background:linear-gradient(180deg,rgba(10,25,47,.97),rgba(2,6,23,.98));
  box-shadow:0 4px 24px rgba(0,0,0,.35);
}
.site-header::after{
  content:'';
  position:absolute;
  bottom:0;
  left:0;
  right:0;
  height:2px;
  background:repeating-linear-gradient(90deg,var(--color-accent) 0 16px,transparent 16px 28px);
  opacity:.55;
  z-index:1;
  pointer-events:none;
}
.scroll-progress{
  position:absolute;
  top:0;
  left:0;
  height:3px;
  width:0%;
  background:linear-gradient(90deg,var(--color-accent),var(--color-green));
  z-index:10;
  pointer-events:none;
}
.header-inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:var(--header-height);
  gap:16px;
}
.brand-link,
.footer-brand-link{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  background:var(--color-accent);
  color:var(--color-ink);
  font-family:var(--font-heading);
  font-weight:800;
  font-size:16px;
  line-height:1;
  clip-path:polygon(0 0,100% 0,100% 74%,74% 100%,0 100%);
  transition:transform var(--transition-fast);
}
.brand-link:hover .brand-mark,
.footer-brand-link:hover .brand-mark{
  transform:rotate(-6deg) scale(1.04);
}
.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.25;
}
.brand-text strong{
  font-family:var(--font-heading);
  font-size:18px;
  font-weight:800;
  color:var(--color-text);
  letter-spacing:.02em;
}
.brand-text small{
  font-family:var(--font-data);
  font-size:10px;
  font-weight:700;
  color:var(--color-text-muted);
  letter-spacing:.14em;
  text-transform:uppercase;
}
.main-nav{
  display:flex;
  align-items:center;
}
.nav-list{
  display:flex;
  align-items:center;
  gap:2px;
}
.nav-item{
  position:relative;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  font-family:var(--font-heading);
  font-size:15px;
  font-weight:600;
  color:var(--color-text);
  white-space:nowrap;
  transition:color var(--transition-fast);
}
.nav-link::after{
  content:'';
  position:absolute;
  left:14px;
  right:14px;
  bottom:0;
  height:2px;
  background:var(--color-accent);
  transform:skewX(-30deg) scaleX(0);
  transform-origin:left;
  transition:transform var(--transition-normal);
}
.nav-link:hover{
  color:var(--color-green);
}
.nav-link:hover::after,
.nav-link[aria-current="page"]::after{
  transform:skewX(-30deg) scaleX(1);
}
.nav-link[aria-current="page"]{
  color:var(--color-accent);
}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
  border:1px solid rgba(148,163,184,.25);
  background:rgba(2,6,23,.4);
  clip-path:polygon(0 0,calc(100% - 6px) 0,100% 6px,100% 100%,6px 100%,0 calc(100% - 6px));
  transition:background var(--transition-fast),border-color var(--transition-fast);
}
.nav-toggle:hover{
  border-color:var(--color-accent);
}
.nav-toggle[aria-expanded="true"]{
  border-color:var(--color-accent);
}
.nav-toggle-box{
  position:relative;
  width:22px;
  height:14px;
}
.nav-toggle-inner,
.nav-toggle-inner::before,
.nav-toggle-inner::after{
  content:'';
  position:absolute;
  left:0;
  width:22px;
  height:2px;
  background:var(--color-text);
  transition:transform var(--transition-fast),background var(--transition-fast),top var(--transition-fast);
}
.nav-toggle-inner{
  top:6px;
}
.nav-toggle-inner::before{
  top:-6px;
}
.nav-toggle-inner::after{
  top:6px;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-inner{
  background:transparent;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-inner::before{
  top:0;
  transform:rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-inner::after{
  top:0;
  transform:rotate(-45deg);
}
.site-footer{
  position:relative;
  background:var(--color-ink);
  background-image:
    linear-gradient(rgba(148,163,184,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(148,163,184,.03) 1px,transparent 1px);
  background-size:48px 48px;
  margin-top:var(--space-2xl);
}
.footer-pattern{
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:linear-gradient(90deg,var(--color-accent),var(--color-green));
  opacity:.5;
  pointer-events:none;
}
.footer-top{
  padding:56px 0 40px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.2fr 1fr 1.2fr;
  gap:48px;
}
.footer-col{
  display:flex;
  flex-direction:column;
}
.footer-brand-link{
  margin-bottom:16px;
}
.footer-desc{
  font-size:14px;
  line-height:1.8;
  color:var(--color-text-muted);
  margin-bottom:16px;
  max-width:340px;
}
.footer-icp{
  font-family:var(--font-data);
  font-size:12px;
  color:var(--color-accent);
  margin-bottom:0;
}
.footer-heading{
  font-family:var(--font-heading);
  font-size:15px;
  font-weight:700;
  color:var(--color-text);
  letter-spacing:.06em;
  margin:0 0 18px;
  padding-bottom:10px;
  position:relative;
}
.footer-heading::after{
  content:'';
  position:absolute;
  bottom:0;
  left:0;
  width:32px;
  height:2px;
  background:var(--color-accent);
  transform:skewX(-30deg);
}
.footer-nav-list li + li{
  margin-top:10px;
}
.footer-nav-list a{
  font-size:14px;
  color:var(--color-text-muted);
  transition:color var(--transition-fast),padding-left var(--transition-fast);
}
.footer-nav-list a:hover{
  color:var(--color-green);
  padding-left:4px;
}
.footer-contact-list{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin-bottom:16px;
}
.footer-contact-item{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:var(--color-text-muted);
  line-height:1.5;
}
.footer-contact-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:28px;
  height:28px;
  flex-shrink:0;
  border:1px solid rgba(255,107,53,.6);
  color:var(--color-accent);
  font-family:var(--font-data);
  font-size:11px;
  font-weight:700;
  clip-path:polygon(0 0,calc(100% - 5px) 0,100% 5px,100% 100%,5px 100%,0 calc(100% - 5px));
}
.footer-note{
  font-size:12px;
  line-height:1.7;
  color:var(--color-text-muted);
  opacity:.75;
  max-width:320px;
}
.footer-bottom{
  border-top:1px solid rgba(148,163,184,.14);
  background:rgba(2,6,23,.5);
}
.footer-bottom-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0;
}
.footer-copyright{
  font-family:var(--font-data);
  font-size:12px;
  color:var(--color-text-muted);
}
.footer-legal{
  display:flex;
  gap:20px;
}
.footer-legal a{
  font-family:var(--font-data);
  font-size:12px;
  color:var(--color-text-muted);
  transition:color var(--transition-fast);
}
.footer-legal a:hover{
  color:var(--color-green);
}
.back-top{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:50;
  width:48px;
  height:48px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--color-bg-light);
  color:var(--color-text);
  border:1px solid rgba(148,163,184,.3);
  font-size:20px;
  cursor:pointer;
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,8px 100%,0 calc(100% - 8px));
  opacity:0;
  visibility:hidden;
  transform:translateY(12px);
  transition:opacity var(--transition-fast),visibility var(--transition-fast),background var(--transition-fast),border-color var(--transition-fast),color var(--transition-fast),transform var(--transition-fast);
}
.back-top.is-visible{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}
.back-top:hover{
  background:var(--color-accent);
  border-color:var(--color-accent);
  color:var(--color-ink);
}
.back-top-icon{
  display:inline-block;
  transform:translateY(-1px);
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 28px;
  font-family:var(--font-heading);
  font-weight:700;
  font-size:15px;
  color:var(--color-text);
  background:transparent;
  border:1px solid var(--color-text-muted);
  cursor:pointer;
  text-decoration:none;
  clip-path:polygon(8px 0,100% 0,calc(100% - 8px) 100%,0 100%);
  transition:background var(--transition-fast),border-color var(--transition-fast),color var(--transition-fast),transform var(--transition-fast);
}
.btn:hover{
  border-color:var(--color-green);
  color:var(--color-green);
}
.btn-primary{
  background:var(--color-accent);
  border-color:var(--color-accent);
  color:var(--color-ink);
}
.btn-primary:hover{
  background:transparent;
  color:var(--color-accent);
}
.btn-outline{
  border-color:var(--color-accent);
  color:var(--color-accent);
}
.btn-outline:hover{
  background:var(--color-accent);
  color:var(--color-ink);
  border-color:var(--color-accent);
}
.section{
  padding:clamp(48px,8vw,88px) 0;
}
.section-title{
  position:relative;
  font-family:var(--font-heading);
  font-weight:800;
  font-size:clamp(28px,4vw,40px);
  line-height:1.15;
  color:var(--color-text);
  margin:0 0 var(--space-lg);
}
.section-title[data-index]::before{
  content:attr(data-index);
  display:block;
  font-family:var(--font-data);
  font-weight:700;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--color-accent);
  margin-bottom:8px;
}
.section-subtitle{
  font-size:var(--text-lg);
  color:var(--color-text-muted);
  margin-top:calc(-1 * var(--space-md));
  margin-bottom:var(--space-2xl);
  max-width:640px;
}
.cut-panel{
  background:var(--color-bg-light);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 16px),calc(100% - 16px) 100%,0 100%);
  padding:var(--space-xl);
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 14px;
  font-family:var(--font-data);
  font-size:12px;
  font-weight:700;
  letter-spacing:.05em;
  color:var(--color-accent);
  border:1px solid var(--color-accent);
  clip-path:polygon(0 0,calc(100% - 6px) 0,100% 6px,100% 100%,6px 100%,0 calc(100% - 6px));
}
.chip-green{
  color:var(--color-green);
  border-color:var(--color-green);
}
.chip-green::before{
  content:'';
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--color-green);
  animation:pulse 1.6s ease-in-out infinite;
}
.data-num{
  font-family:var(--font-data);
  font-weight:700;
  font-size:1.15em;
  color:var(--color-green);
  letter-spacing:.04em;
}
.figure{
  position:relative;
  overflow:hidden;
  background:var(--color-bg-light);
}
.figure::after{
  content:'';
  position:absolute;
  bottom:0;
  right:0;
  width:36px;
  height:36px;
  background:var(--color-accent);
  clip-path:polygon(100% 0,100% 100%,0 100%);
  z-index:2;
  pointer-events:none;
}
.figure img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform var(--transition-slow);
}
.figure:hover img{
  transform:scale(1.03);
}
.figure-caption{
  padding:10px 14px;
  font-family:var(--font-data);
  font-size:12px;
  color:var(--color-text-muted);
  background:rgba(2,6,23,.7);
  position:absolute;
  left:0;
  bottom:0;
  right:36px;
  z-index:3;
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:6px;
  font-family:var(--font-data);
  font-size:13px;
  color:var(--color-text-muted);
  margin-bottom:var(--space-lg);
}
.breadcrumb a{
  color:var(--color-text-muted);
  transition:color var(--transition-fast);
}
.breadcrumb a:hover{
  color:var(--color-green);
}
.breadcrumb-sep{
  color:var(--color-accent);
  transform:skewX(-15deg);
  display:inline-block;
}
.breadcrumb .is-current{
  color:var(--color-text);
}
[data-reveal]{
  opacity:0;
  transform:translateY(24px);
  transition:opacity .55s ease,transform .55s ease;
}
[data-reveal].is-visible{
  opacity:1;
  transform:translateY(0);
}
@keyframes pulse{
  0%,100%{opacity:1}
  50%{opacity:.35}
}
@media(max-width:1024px){
  .footer-grid{
    grid-template-columns:1fr 1fr;
    gap:36px;
  }
  .footer-brand{
    grid-column:1 / -1;
  }
}
@media(max-width:860px){
  :root{
    --header-height:64px;
  }
  .nav-toggle{
    display:inline-flex;
  }
  .main-nav{
    position:fixed;
    top:var(--header-height);
    left:0;
    right:0;
    z-index:99;
    background:rgba(2,6,23,.98);
    border-bottom:1px solid rgba(148,163,184,.16);
    padding:8px 24px 20px;
    visibility:hidden;
    opacity:0;
    transform:translateY(-8px);
    transition:opacity var(--transition-normal),transform var(--transition-normal),visibility var(--transition-normal);
  }
  .main-nav[data-open]{
    visibility:visible;
    opacity:1;
    transform:translateY(0);
  }
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .nav-item{
    border-bottom:1px solid rgba(148,163,184,.1);
  }
  .nav-item:last-child{
    border-bottom:none;
  }
  .nav-link{
    display:block;
    width:100%;
    padding:15px 4px;
    font-size:16px;
  }
  .nav-link::after{
    left:4px;
    right:auto;
    width:0;
    transform:none;
    transition:width var(--transition-normal);
  }
  .nav-link:hover::after,
  .nav-link[aria-current="page"]::after{
    width:34px;
    transform:none;
  }
}
@media(max-width:640px){
  .footer-grid{
    grid-template-columns:1fr;
    gap:32px;
  }
  .footer-brand{
    grid-column:auto;
  }
  .footer-bottom-inner{
    flex-direction:column;
    align-items:flex-start;
    gap:8px;
  }
  .footer-legal{
    flex-wrap:wrap;
    gap:12px 20px;
  }
  .brand-text small{
    display:none;
  }
  .brand-mark{
    width:34px;
    height:34px;
    font-size:14px;
  }
  .back-top{
    right:16px;
    bottom:16px;
    width:42px;
    height:42px;
  }
}
@media(prefers-reduced-motion:reduce){
  html{
    scroll-behavior:auto;
  }
  *,
  *::before,
  *::after{
    animation-duration:.01ms !important;
    transition-duration:.01ms !important;
  }
  [data-reveal]{
    opacity:1;
    transform:none;
  }
  .flow-progress,
  .scroll-progress{
    transition:none;
  }
}