:root{
  --ink:#061A14;
  --panel:#0C2820;
  --board:#0A221B;
  --grid:#193D32;
  --white:#F4F8F5;
  --steel:#8AA3B8;
  --lime:#C8FF4A;
  --orange:#FF8A3D;
  --cyan:#28E0C0;
  --mist:#B9C7BE;
  --red:#FF5D5D;

  --line:rgba(244,248,245,.12);
  --line-strong:rgba(244,248,245,.24);

  --font-cn:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Barlow Condensed","Oswald","DIN Condensed","Roboto Condensed","Arial Narrow","Haettenschweiler",var(--font-cn);

  --measure:1240px;
  --gutter:clamp(16px,4vw,40px);
  --cut:12px;
  --s2:16px;
  --s3:24px;
  --s4:32px;
}

*,
*::before,
*::after{box-sizing:border-box;}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
}

body{
  margin:0;
  background-color:var(--ink);
  background-image:
    linear-gradient(to right,rgba(25,61,50,.55) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(25,61,50,.55) 1px,transparent 1px);
  background-size:72px 72px;
  background-position:50% 0;
  color:var(--white);
  font-family:var(--font-cn);
  font-size:16px;
  font-weight:400;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

main{display:block;}

h1,h2,h3,h4,h5,h6{
  margin:0 0 .5em;
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.16;
}
h1{font-size:clamp(32px,4.6vw,60px);}
h2{font-size:clamp(25px,3.2vw,40px);}
h3{font-size:clamp(19px,1.9vw,24px);font-weight:700;line-height:1.32;}

p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}

a{
  color:var(--lime);
  text-decoration-color:rgba(200,255,74,.45);
  text-underline-offset:3px;
}
a:hover{text-decoration-color:currentColor;}

img,svg,video{display:block;max-width:100%;}
img{height:auto;}

ul,ol{margin:0 0 1em;padding-left:1.15em;}
ul:last-child,ol:last-child{margin-bottom:0;}

::selection{background:var(--lime);color:#061A14;}

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

#main-content:focus{outline:none;}

.visually-hidden{
  position:absolute;
  width:1px;height:1px;
  margin:-1px;padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}

.skip-link{
  position:fixed;
  top:-120px;left:clamp(12px,3vw,24px);
  z-index:200;
  padding:12px 20px;
  background:var(--lime);
  color:#061A14;
  font-size:14px;
  font-weight:700;
  text-decoration:none;
  transition:top .18s ease;
}
.skip-link:focus{top:12px;outline:2px solid var(--white);outline-offset:2px;}

.container{
  width:100%;
  max-width:var(--measure);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.section{padding-block:clamp(40px,6vw,96px);}
.section--tight{padding-block:clamp(24px,3vw,48px);}

.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2.2vw,32px);
}

.stack > * + *{margin-top:var(--s3);}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin:0 0 14px;
  font-family:var(--font-num);
  font-size:12px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--steel);
}
.eyebrow::before{
  content:"";
  width:26px;height:1px;
  background:var(--lime);
  flex:0 0 auto;
}

.lede{
  max-width:66ch;
  font-size:clamp(17px,1.6vw,20px);
  line-height:1.65;
  color:var(--mist);
}

.muted{color:var(--mist);}

.num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
  letter-spacing:.01em;
  line-height:1;
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  border:1px solid var(--line-strong);
  color:var(--mist);
  font-family:var(--font-num);
  font-size:11px;
  letter-spacing:.12em;
  text-transform:uppercase;
  white-space:nowrap;
}
.tag--lime{color:var(--lime);border-color:rgba(200,255,74,.45);background:rgba(200,255,74,.07);}
.tag--orange{color:var(--orange);border-color:rgba(255,138,61,.45);background:rgba(255,138,61,.08);}
.tag--steel{color:var(--steel);border-color:rgba(138,163,184,.4);background:rgba(138,163,184,.08);}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  border:1px solid var(--line-strong);
  border-radius:0;
  background:transparent;
  color:var(--white);
  font-family:var(--font-cn);
  font-size:14px;
  font-weight:600;
  letter-spacing:.04em;
  line-height:1.2;
  text-decoration:none;
  cursor:pointer;
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px));
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn:focus-visible{outline:none;box-shadow:inset 0 0 0 2px var(--cyan);}

.btn--lime{background:var(--lime);border-color:var(--lime);color:#061A14;font-weight:700;}
.btn--lime:hover{background:#D9FF79;border-color:#D9FF79;color:#061A14;}

.btn--orange{background:var(--orange);border-color:var(--orange);color:#1A0C02;font-weight:700;}
.btn--orange:hover{background:#FFA366;border-color:#FFA366;color:#1A0C02;}

.btn--ghost:hover{border-color:var(--lime);color:var(--lime);}

.panel{
  position:relative;
  padding:clamp(18px,2.4vw,32px);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(12,40,32,.96),rgba(10,34,27,.96));
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));
}
.panel--flat{
  clip-path:none;
  border-left:3px solid var(--lime);
  background:rgba(12,40,32,.72);
}

.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16 / 10;
  border:1px solid var(--line);
  background:var(--board);
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));
}
.media-frame img{width:100%;height:100%;object-fit:cover;}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,26,20,0) 36%,rgba(6,26,20,.78) 100%);
  pointer-events:none;
}
.media-frame--wide{aspect-ratio:21 / 9;}
.media-frame--tall{aspect-ratio:3 / 4;}
.media-caption{
  display:block;
  margin-top:10px;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--steel);
}

.breadcrumb{padding-top:clamp(14px,2vw,22px);font-size:12.5px;color:var(--mist);}
.breadcrumb ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  margin:0;
  padding:0;
  list-style:none;
}
.breadcrumb li{display:inline-flex;align-items:center;}
.breadcrumb li + li::before{
  content:"/";
  margin:0 .65em;
  color:rgba(138,163,184,.55);
}
.breadcrumb a{color:var(--steel);text-decoration:none;}
.breadcrumb a:hover{color:var(--lime);}
.breadcrumb [aria-current="page"]{color:var(--white);}

.rule{height:1px;margin:0;border:0;background:var(--grid);}
.rule--accent{background:linear-gradient(90deg,var(--lime),transparent 68%);}

/* ---------- Header ---------- */
.site-header{
  position:relative;
  z-index:30;
  isolation:isolate;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(120% 170% at 50% -50%,rgba(40,224,192,.14),transparent 62%),
    linear-gradient(180deg,#08231B 0%,#061A14 72%);
}
.site-header::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:2px;
  background:linear-gradient(90deg,var(--lime) 0%,var(--cyan) 34%,rgba(25,61,50,.4) 68%,transparent 100%);
}

.masthead{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  align-items:center;
  gap:clamp(16px,3vw,40px);
  max-width:var(--measure);
  margin:0 auto;
  padding:clamp(18px,2.6vw,30px) var(--gutter) clamp(12px,1.6vw,18px);
}

.masthead-side{
  display:flex;
  flex-direction:column;
  gap:8px;
  min-width:0;
}
.masthead-side--start{align-items:flex-start;text-align:left;}
.masthead-side--end{align-items:flex-end;text-align:right;}

.masthead-line{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin:0;
  font-size:13px;
  font-weight:500;
  letter-spacing:.08em;
  color:var(--mist);
}
.masthead-line::before{
  content:"";
  width:3px;height:18px;
  background:var(--lime);
  flex:0 0 auto;
}

.coord-label{
  font-family:var(--font-num);
  font-size:11px;
  letter-spacing:.3em;
  text-transform:uppercase;
  color:var(--steel);
}

.brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:6px;
  justify-self:center;
  color:var(--white);
  text-decoration:none;
}
.brand-cn{
  color:var(--white);
  font-size:clamp(24px,3.2vw,40px);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.05;
  white-space:nowrap;
}
@supports (-webkit-background-clip:text){
  .brand-cn{
    background:linear-gradient(180deg,#F4F8F5 24%,#BED9CB 100%);
    -webkit-background-clip:text;
    background-clip:text;
    -webkit-text-fill-color:transparent;
  }
}
.brand-latin{
  font-family:var(--font-num);
  font-size:10.5px;
  letter-spacing:.42em;
  text-transform:uppercase;
  color:var(--steel);
  padding-left:.42em;
}
.brand:hover .brand-latin{color:var(--cyan);}

.status-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin:0;
  padding:6px 12px;
  background:rgba(200,255,74,.06);
  border:1px solid rgba(200,255,74,.32);
  color:var(--lime);
  font-size:12px;
  letter-spacing:.06em;
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,8px 100%,0 calc(100% - 8px));
}
.status-dot{
  width:7px;height:7px;
  border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 0 0 rgba(200,255,74,.5);
  animation:status-pulse 2.6s ease-out infinite;
  flex:0 0 auto;
}
@keyframes status-pulse{
  0%{box-shadow:0 0 0 0 rgba(200,255,74,.45);}
  70%{box-shadow:0 0 0 8px rgba(200,255,74,0);}
  100%{box-shadow:0 0 0 0 rgba(200,255,74,0);}
}

.account-hint{
  display:inline-block;
  max-width:30ch;
  font-size:11.5px;
  line-height:1.55;
  color:var(--steel);
}

.tick-bar{
  max-width:calc(var(--measure) - var(--gutter) * 2);
  height:6px;
  margin:0 auto clamp(6px,1vw,12px);
  background-image:repeating-linear-gradient(90deg,rgba(138,163,184,.45) 0 1px,transparent 1px 22px);
  background-repeat:repeat-x;
  opacity:.75;
}

.nav-bar{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  align-items:center;
  gap:16px;
  max-width:var(--measure);
  margin:0 auto;
  padding:0 var(--gutter) clamp(10px,1.4vw,16px);
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  justify-self:start;
  padding:10px 14px;
  background:transparent;
  border:1px solid var(--line-strong);
  color:var(--white);
  font-family:var(--font-num);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  cursor:pointer;
  transition:border-color .18s ease,color .18s ease;
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime);}
.nav-toggle-bars{
  display:inline-flex;
  flex-direction:column;
  gap:3px;
  width:16px;
}
.nav-toggle-bars span{
  display:block;
  height:2px;
  background:currentColor;
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle-text{line-height:1;}
[data-nav-toggle][aria-expanded="true"] .nav-toggle-bars span:nth-child(1){transform:translateY(5px) rotate(45deg);}
[data-nav-toggle][aria-expanded="true"] .nav-toggle-bars span:nth-child(2){opacity:0;}
[data-nav-toggle][aria-expanded="true"] .nav-toggle-bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

.site-nav{
  justify-self:center;
  display:flex;
  align-items:stretch;
  flex-wrap:wrap;
  gap:2px;
  counter-reset:nav-i;
}
.site-nav a{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 14px;
  border:1px solid transparent;
  color:var(--mist);
  font-size:14.5px;
  font-weight:500;
  letter-spacing:.02em;
  line-height:1.3;
  text-decoration:none;
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.site-nav a::before{
  counter-increment:nav-i;
  content:counter(nav-i,decimal-leading-zero);
  font-family:var(--font-num);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--steel);
}
.site-nav a:hover{
  color:var(--lime);
  border-color:rgba(200,255,74,.28);
}
.site-nav a:hover::before{color:var(--orange);}
.site-nav a[aria-current="page"]{
  color:var(--lime);
  background:rgba(200,255,74,.07);
  border-color:rgba(200,255,74,.35);
  box-shadow:inset 0 -2px 0 rgba(200,255,74,.85);
}
.site-nav a[aria-current="page"]::before{color:var(--orange);}

.quick-cta{justify-self:end;}

.scroll-progress{
  position:absolute;
  left:0;bottom:0;
  width:0;
  height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--lime));
  transition:width .1s linear;
  z-index:5;
}

/* ---------- Footer ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,110px);
  background:linear-gradient(180deg,var(--board) 0%,var(--panel) 100%);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:2px;
  background:linear-gradient(90deg,var(--lime) 0%,var(--cyan) 38%,transparent 72%);
}

.footer-inner{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1.6fr;
  gap:clamp(24px,3vw,48px);
  max-width:var(--measure);
  margin:0 auto;
  padding:clamp(40px,5vw,64px) var(--gutter) clamp(28px,3vw,40px);
}

.footer-brand-link{
  display:inline-block;
  color:var(--white);
  font-size:clamp(20px,2.4vw,26px);
  font-weight:900;
  letter-spacing:-.01em;
  text-decoration:none;
  line-height:1.2;
}
.footer-brand-link:hover{color:var(--cyan);}

.footer-brand-line{
  margin:10px 0 0;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--lime);
}

.footer-service-line{
  margin:14px 0 0;
  font-family:var(--font-num);
  font-size:11.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--steel);
  line-height:1.8;
}

.footer-col-title{
  margin:0 0 14px;
  padding-bottom:10px;
  border-bottom:1px solid var(--grid);
  font-family:var(--font-num);
  font-size:11px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--steel);
}

.footer-nav ul{
  display:grid;
  gap:9px;
  margin:0;
  padding:0;
  list-style:none;
}
.footer-nav a{
  color:var(--mist);
  font-size:14px;
  text-decoration:none;
  transition:color .16s ease;
}
.footer-nav a:hover{color:var(--lime);}

.contact-list{
  display:grid;
  gap:10px;
  margin:0;
  padding:0;
  list-style:none;
}
.contact-list li{
  display:grid;
  grid-template-columns:42px minmax(0,1fr);
  gap:8px;
  align-items:baseline;
}
.contact-label{
  font-family:var(--font-num);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--steel);
}
.contact-value{
  color:var(--white);
  font-size:13.5px;
  line-height:1.6;
  font-variant-numeric:tabular-nums;
  word-break:break-word;
}

.footer-note{
  margin:16px 0 0;
  padding-left:10px;
  border-left:2px solid var(--grid);
  font-size:12px;
  line-height:1.65;
  color:var(--steel);
}

.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 26px;
  max-width:var(--measure);
  margin:0 auto;
  padding:16px var(--gutter) 30px;
  border-top:1px solid var(--grid);
  font-size:12.5px;
  color:var(--steel);
}
.footer-copy,.footer-legal{margin:0;}
.footer-legal{font-family:var(--font-num);letter-spacing:.1em;}
.footer-base-links{
  display:flex;
  flex-wrap:wrap;
  gap:18px;
  margin:0 0 0 auto;
  padding:0;
  list-style:none;
}
.footer-base-links a{color:var(--mist);text-decoration:none;}
.footer-base-links a:hover{color:var(--lime);}

/* ---------- JS 注入组件 ---------- */
.back-to-top{
  position:fixed;
  right:clamp(16px,3vw,32px);
  bottom:clamp(16px,3vw,32px);
  z-index:60;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 14px;
  border:1px solid var(--line-strong);
  background:var(--panel);
  color:var(--white);
  font-family:var(--font-num);
  font-size:12px;
  letter-spacing:.16em;
  cursor:pointer;
  opacity:0;
  transform:translateY(12px);
  pointer-events:none;
  transition:opacity .2s ease,transform .2s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.back-to-top.is-active{opacity:1;transform:none;pointer-events:auto;}
.back-to-top:hover{background:var(--lime);border-color:var(--lime);color:#061A14;}

body.reveal-ready [data-reveal]{
  opacity:0;
  transform:translateY(16px);
}
body.reveal-ready [data-reveal].is-revealed{
  opacity:1;
  transform:none;
  transition:opacity .55s ease,transform .55s ease;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr));}
}

@media (max-width:1023px){
  .masthead{
    grid-template-columns:1fr;
    justify-items:center;
    gap:14px;
    text-align:center;
  }
  .masthead-side--start,
  .masthead-side--end{
    align-items:center;
    text-align:center;
  }
  .account-hint{max-width:34ch;}
  .nav-bar{
    grid-template-columns:auto minmax(0,1fr) auto;
    gap:12px;
  }
  .nav-toggle{display:inline-flex;}
  .quick-cta{justify-self:end;}
  .site-nav{
    position:absolute;
    left:var(--gutter);
    right:var(--gutter);
    top:100%;
    z-index:40;
    flex-direction:column;
    align-items:stretch;
    flex-wrap:nowrap;
    gap:0;
    max-height:0;
    overflow:hidden;
    opacity:0;
    visibility:hidden;
    transform:translateY(-6px);
    background:var(--board);
    border:1px solid var(--line);
    border-top:0;
    counter-reset:nav-i;
    transition:max-height .28s ease,opacity .2s ease,transform .28s ease,visibility .28s;
  }
  .site-nav[data-open]{
    max-height:min(70vh,480px);
    overflow-y:auto;
    opacity:1;
    visibility:visible;
    transform:translateY(0);
  }
  .site-nav a{
    padding:14px 16px;
    border:0;
    border-bottom:1px solid rgba(25,61,50,.9);
    font-size:15px;
  }
  .site-nav a:hover{border-color:transparent;border-bottom-color:rgba(200,255,74,.5);}
  .site-nav a[aria-current="page"]{
    border:0;
    border-bottom:1px solid rgba(200,255,74,.45);
    box-shadow:inset 3px 0 0 var(--lime);
  }
}

@media (max-width:960px){
  .footer-inner{grid-template-columns:1fr 1fr;}
}

@media (max-width:640px){
  body{font-size:15.5px;}
  .footer-inner{grid-template-columns:1fr;gap:32px;}
  .footer-base{flex-direction:column;align-items:flex-start;gap:8px;}
  .footer-base-links{margin:6px 0 0;}
  .grid-12{grid-template-columns:repeat(2,minmax(0,1fr));}
  .back-to-top{right:12px;bottom:12px;padding:9px 12px;}
}

@media (max-width:400px){
  .brand-cn{font-size:22px;}
  .status-pill{font-size:11px;}
  .account-hint{display:none;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .status-dot{animation:none;}
  body.reveal-ready [data-reveal]{opacity:1;transform:none;}
  .back-to-top{transition:none;}
}