:root{
  --bg-main:#0B1B3A;
  --bg-panel:#13294B;
  --bg-light:#F5F7FA;
  --accent:#FF6B35;
  --accent-2:#00E5FF;
  --accent-3:#9C6FFF;
  --danger:#FF3B3B;
  --text-main:#FFFFFF;
  --text-sub:#B0B7C3;
  --border:#2D3748;
  --font-display:"Archivo Black","Oswald","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Inter","Noto Sans SC","PingFang SC","Helvetica Neue","Microsoft YaHei",sans-serif;
  --font-mono:"Roboto Mono","SFMono-Regular","Menlo","Consolas",monospace;
  --header-h:76px;
  --radius:14px;
  --shadow:0 12px 40px rgba(0,0,0,.35);
  --shadow-soft:0 6px 20px rgba(0,0,0,.25);
  --container:1260px;
  --space:clamp(2.5rem,6vw,5.5rem);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px);font-size:16px}
body{
  font-family:var(--font-body);
  background:var(--bg-main);
  color:var(--text-main);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
img,svg{display:block;max-width:100%;height:auto}
a{color:var(--accent-2);text-decoration:none}
a:hover{color:var(--accent)}
button{font-family:var(--font-body);cursor:pointer}
ul,ol{list-style:none}
:focus{outline:2px dashed var(--accent-2);outline-offset:4px}
:focus-visible{outline:2px dashed var(--accent-2);outline-offset:4px;border-radius:4px}
::selection{background:var(--accent);color:var(--bg-main)}
[data-open]{--open-opacity:1}
#main-content{outline:none}
.skiplink{
  position:fixed;top:-100px;left:16px;z-index:9999;
  background:var(--accent);color:var(--bg-main);
  font-weight:700;padding:12px 20px;border-radius:0 0 8px 8px;
  transition:top .25s ease;
}
.skiplink:focus{top:0;color:var(--bg-main);outline:none}
.site-header{
  position:sticky;top:0;z-index:700;
  background:rgba(11,27,58,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(45,55,72,.7);
  min-height:var(--header-h);
  transition:background .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.site-header[data-scrolled="true"]{
  background:rgba(11,27,58,.94);
  border-color:rgba(255,107,53,.24);
  box-shadow:0 8px 30px rgba(0,0,0,.48);
}
.header-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 clamp(1rem,3vw,2.25rem);
  min-height:var(--header-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.brand-lockup{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
  min-width:0;
}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;
  background:linear-gradient(135deg,var(--accent) 0%,#FF8534 50%,var(--accent-2) 130%);
  color:var(--bg-main);
  font-family:var(--font-display);
  font-weight:900;
  font-size:1.45rem;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:10px 4px 10px 4px;
  box-shadow:0 4px 16px rgba(255,107,53,.3);
  transform:skewX(-6deg) rotate(-2deg);
}
.brand-lockup:hover .brand-mark{
  transform:skewX(-6deg) rotate(2deg) scale(1.02);
}
.brand-lockup .brand-mark{transition:transform .3s ease}
.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.25;
}
.brand-text strong{
  font-family:var(--font-display);
  font-size:1.35rem;
  letter-spacing:.04em;
  color:var(--text-main);
  font-weight:900;
  white-space:nowrap;
}
.brand-text em{
  font-style:normal;
  font-size:.74rem;
  color:var(--text-sub);
  letter-spacing:.12em;
  white-space:nowrap;
}
.site-nav{margin-left:auto}
.site-nav ul{
  display:flex;
  gap:clamp(.25rem,1.4vw,1rem);
  align-items:center;
}
.site-nav a{
  display:block;
  padding:.5rem .65rem;
  font-size:.88rem;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--text-sub);
  position:relative;
  transition:color .2s ease;
  border-radius:6px;
}
.site-nav a::after{
  content:"";position:absolute;left:.65rem;right:.65rem;bottom:2px;height:2px;
  background:var(--accent);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s ease,background .25s ease;
}
.site-nav a:hover{color:var(--text-main)}
.site-nav a:hover::after{transform:scaleX(1)}
.site-nav a[aria-current="page"]{
  color:var(--accent-2);
  font-weight:700;
}
.site-nav a[aria-current="page"]::after{
  transform:scaleX(1);
  background:var(--accent-2);
}
.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  background:transparent;
  border:1px solid var(--border);
  border-radius:10px;
  padding:.5rem .7rem;
  margin-left:.5rem;
  transition:border-color .2s ease,background .2s ease;
  flex-shrink:0;
}
.nav-toggle:hover{border-color:var(--accent);background:rgba(255,107,53,.08)}
.nav-toggle[aria-expanded="true"]{border-color:var(--accent);background:rgba(255,107,53,.14)}
.nav-toggle-line{
  display:block;width:20px;height:2px;background:var(--text-main);
  margin:3px auto;border-radius:2px;
  transition:transform .3s ease,opacity .3s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1){transform:translateY(5px) 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(-5px) rotate(-45deg)}
.nav-toggle-label{
  font-size:.72rem;
  color:var(--text-sub);
  font-weight:700;
  letter-spacing:.12em;
  text-transform:uppercase;
}
.site-footer{
  background:var(--bg-main);
  color:var(--text-main);
  border-top:1px solid transparent;
  position:relative;
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;inset:0;
  background:
    radial-gradient(ellipse 45% 60% at 88% 30%,rgba(156,111,255,.08),transparent 70%),
    radial-gradient(ellipse 40% 50% at 8% 70%,rgba(0,229,255,.06),transparent 70%);
  pointer-events:none;
}
.slant-band{
  height:8px;
  background:
    linear-gradient(90deg,var(--accent) 0%,var(--accent) 10%,var(--accent-2) 80%,var(--accent-3) 110%);
  clip-path:polygon(0 0,100% 0,calc(100% - 60px) 100%,0 100%);
  position:relative;
  z-index:2;
}
.footer-grid{
  max-width:var(--container);
  margin:0 auto;
  padding:var(--space) clamp(1rem,3vw,2.25rem) 2rem;
  display:grid;
  grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1.1fr);
  gap:clamp(1.8rem,5vw,4rem);
  position:relative;
  z-index:1;
}
.footer-brand .brand-lockup{margin-bottom:1.25rem}
.footer-trust{
  color:var(--text-sub);
  font-size:.92rem;
  border-left:3px solid var(--accent);
  padding-left:1rem;
  margin-bottom:1rem;
  position:relative;
  transition:background .3s ease;
}
.footer-trust[data-refresh="flicker"]{
  animation:footer-flicker 1s ease;
}
@keyframes footer-flicker{
  0%,100%{background:transparent}
  30%{background:rgba(255,107,53,.12)}
  70%{background:rgba(0,229,255,.06)}
}
.footer-note{
  color:var(--text-sub);
  font-size:.82rem;
  opacity:.85;
}
.footer-heading{
  font-family:var(--font-display);
  font-size:.95rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--text-main);
  margin-bottom:1rem;
  position:relative;
  padding-bottom:.5rem;
}
.footer-heading::after{
  content:"";position:absolute;left:0;bottom:0;width:34px;height:3px;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  border-radius:2px;
}
.footer-links li,.footer-contact address span{display:block;margin-bottom:.45rem}
.footer-links a,.footer-contact a{
  color:var(--text-sub);
  font-size:.92rem;
  transition:color .2s ease,padding-left .2s ease;
}
.footer-links a:hover,.footer-contact a:hover{color:var(--accent-2);padding-left:4px}
.footer-contact address{font-style:normal;margin-bottom:1rem}
.footer-contact .btn-sm{margin-top:.5rem}
.footer-bottom{
  border-top:1px solid var(--border);
  padding:1.2rem clamp(1rem,3vw,2.25rem);
  display:flex;
  flex-wrap:wrap;
  gap:.8rem 2rem;
  align-items:center;
  justify-content:space-between;
  max-width:var(--container);
  margin:0 auto;
  position:relative;
  z-index:1;
}
.footer-legal{
  display:flex;
  flex-wrap:wrap;
  gap:.6rem 1.4rem;
}
.footer-legal a,.footer-copy,.icp-text{
  font-size:.78rem;
  color:var(--text-sub);
}
.footer-legal a:hover{color:var(--accent-2)}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding:.8rem 1.6rem;
  border-radius:10px;
  font-family:var(--font-body);
  font-weight:700;
  font-size:.9rem;
  letter-spacing:.06em;
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
  background:var(--bg-panel);
  color:var(--text-main);
}
.btn:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-soft);
  color:var(--text-main);
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),#FA4A0C);
  color:var(--bg-main);
  box-shadow:0 6px 18px rgba(255,107,53,.28);
}
.btn-primary:hover{
  background:linear-gradient(135deg,#FA4A0C,var(--accent));
  box-shadow:0 8px 26px rgba(255,107,53,.42);
  color:var(--bg-main);
}
.btn-ghost{
  border-color:var(--border);
  background:transparent;
  color:var(--text-main);
}
.btn-ghost:hover{
  border-color:var(--accent-2);
  background:rgba(0,229,255,.08);
  color:var(--accent-2);
}
.btn-sm{padding:.6rem 1.1rem;font-size:.82rem}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  gap:.3rem .6rem;
  align-items:center;
  padding:1rem 0;
  color:var(--text-sub);
  font-size:.82rem;
}
.breadcrumb a{color:var(--text-sub)}
.breadcrumb a:hover{color:var(--accent-2)}
.breadcrumb [aria-current="page"]{color:var(--accent-2);font-weight:700}
.breadcrumb li::before{
  content:"/";
  color:var(--border);
  margin-right:.5rem;
}
.breadcrumb li:first-child::before{content:"";margin:0}
.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 clamp(1rem,3vw,2.25rem);
  position:relative;
}
.content-section{
  padding:var(--space) 0;
}
.section-kicker{
  font-family:var(--font-mono);
  font-size:.75rem;
  color:var(--accent);
  letter-spacing:.24em;
  text-transform:uppercase;
  display:block;
  margin-bottom:.8rem;
  position:relative;
  padding-left:1.2rem;
}
.section-kicker::before{
  content:"";
  position:absolute;left:0;top:50%;
  width:14px;height:2px;
  background:var(--accent);
  transform:translateY(-50%);
}
.media-frame{
  position:relative;
  padding-top:58%;
  border-radius:var(--radius);
  overflow:hidden;
  background:
    linear-gradient(135deg,rgba(0,229,255,.08),rgba(156,111,255,.12)),
    repeating-linear-gradient(45deg,rgba(255,255,255,.02) 0 8px,transparent 8px 16px),
    var(--bg-panel);
  border:1px solid rgba(45,55,72,.8);
  box-shadow:var(--shadow-soft);
}
.media-frame[data-media="portrait"]{padding-top:120%}
.media-frame[data-media="wide"]{padding-top:52%}
.media-frame[data-media="tall"]{padding-top:140%}
.media-frame::after{
  content:attr(data-label);
  position:absolute;
  left:50%;top:50%;
  transform:translate(-50%,-50%);
  color:var(--text-sub);
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  white-space:nowrap;
}
.data-badge{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  font-size:.75rem;
  font-weight:700;
  padding:.2rem .7rem;
  border-radius:99px;
  background:var(--bg-panel);
  border:1px solid var(--border);
  color:var(--text-sub);
}
.data-badge::before{
  content:"";
  width:7px;height:7px;
  border-radius:50%;
  background:currentColor;
  flex:0 0 7px;
}
.data-badge[data-status="live"]{
  color:var(--accent-2);
  border-color:rgba(0,229,255,.3);
  background:rgba(0,229,255,.08);
}
.data-badge[data-status="live"]::before{
  animation:live-pulse 1.4s ease infinite;
}
@keyframes live-pulse{
  0%,100%{transform:scale(1);opacity:1}
  50%{transform:scale(1.4);opacity:.7}
}
.data-badge[data-status="delay"]{
  color:var(--accent);
  border-color:rgba(255,107,53,.4);
  background:rgba(255,107,53,.08);
}
.data-badge[data-status="ok"]{
  color:#2ED27A;
  border-color:rgba(46,210,122,.3);
  background:rgba(46,210,122,.06);
}
/* 滚动进度条 */
.scroll-progress{
  position:fixed;
  top:0;left:0;
  height:3px;
  z-index:1000;
  pointer-events:none;
  width:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--accent),var(--accent-2),var(--accent-3));
}
/* 返回顶部按钮 */
.to-top{
  position:fixed;
  right:clamp(1rem,3vw,2.4rem);
  bottom:clamp(1rem,3vw,2.4rem);
  z-index:800;
  width:44px;height:44px;
  border-radius:50%;
  border:1px solid var(--border);
  background:rgba(11,27,58,.88);
  color:var(--accent-2);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  box-shadow:var(--shadow-soft);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1.2rem;
  opacity:0;
  visibility:hidden;
  transform:translateY(16px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease,border-color .2s ease;
}
.to-top svg{width:18px;height:18px;stroke:currentColor;stroke-width:2.4;fill:none;stroke-linecap:round;stroke-linejoin:round}
.to-top[data-visible="true"]{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}
.to-top:hover{border-color:var(--accent);color:var(--accent)}
/* 章节目录跟随 */
.chapter-list{
  display:flex;
  flex-wrap:wrap;
  gap:.5rem;
  margin-bottom:2rem;
}
.chapter-list a{
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.08em;
  padding:.4rem .9rem;
  border-radius:99px;
  border:1px solid var(--border);
  color:var(--text-sub);
  background:rgba(19,41,75,.5);
  transition:all .25s ease;
}
.chapter-list a:hover,
.chapter-list a[data-chapter-active="true"]{
  border-color:var(--accent);
  color:var(--accent);
  background:rgba(255,107,53,.1);
}
@media(max-width:1024px){
  :root{--header-h:68px}
  .site-nav{
    position:fixed;
    top:var(--header-h);
    right:0;
    width:min(88vw,360px);
    height:calc(100vh - var(--header-h));
    background:rgba(11,27,58,.97);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border-left:1px solid var(--border);
    border-top:1px solid var(--border);
    margin:0;
    padding:1.5rem 1.2rem;
    transform:translateX(105%);
    visibility:hidden;
    transition:transform .35s ease,visibility .35s ease;
    box-shadow:-18px 0 50px rgba(0,0,0,.35);
  }
  .site-nav[data-open="true"]{
    transform:translateX(0);
    visibility:visible;
  }
  .site-nav ul{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .site-nav a{
    padding:1rem .8rem;
    font-size:1rem;
    border-bottom:1px solid rgba(45,55,72,.7);
    border-radius:0;
  }
  .site-nav a::after{display:none}
  .site-nav a[aria-current="page"]{
    background:rgba(255,107,53,.12);
    border-left:3px solid var(--accent);
    color:var(--accent);
  }
  .nav-toggle{display:inline-flex}
  .footer-grid{
    grid-template-columns:1fr;
    gap:2.2rem;
  }
  .footer-bottom{
    flex-direction:column;
    align-items:flex-start;
  }
}
@media(max-width:600px){
  :root{--header-h:60px}
  .brand-mark{width:34px;height:34px;flex-basis:34px;font-size:1.1rem;border-radius:8px 4px 8px 4px}
  .brand-text strong{font-size:1.05rem}
  .brand-text em{font-size:.6rem;letter-spacing:.06em}
  .nav-toggle-label{display:none}
  .nav-toggle{padding:.45rem .55rem}
  .site-nav{width:100vw;top:var(--header-h)}
  .footer-bottom{font-size:.74rem;gap:.6rem}
  .footer-legal{flex-direction:column;gap:.4rem}
}
/* 数据卡片闪烁 */
[data-refresh="flicker"]{
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
@media(prefers-reduced-motion:reduce){
  *{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  html{scroll-behavior:auto}
  .to-top,.site-nav,.nav-toggle-line,.brand-mark{transition:none !important}
}