*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --c-primary:#0B1E3A;
  --c-secondary:#0F2A4A;
  --c-border:#1E3A5F;
  --c-gold:#D4AF37;
  --c-gold-bright:#F0D060;
  --c-red:#E63946;
  --c-white:#FFFFFF;
  --c-gray:#B0C4DE;
  --c-gold-pale:#F5E6B0;
  --font-title:'Arial Black','Helvetica Neue',sans-serif;
  --font-num:'Roboto Mono','Courier New',monospace;
  --font-body:'PingFang SC','Microsoft YaHei',sans-serif;
  --header-max:1360px;
  --radius-card:16px;
  --radius-capsule:999px;
  --space-section:72px;
  --shadow-card:0 12px 32px rgba(0,0,0,0.35)
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--c-white);
  background-color:var(--c-primary);
  background-image:
    radial-gradient(ellipse 80% 50% at 12% -8%,rgba(15,42,74,0.85) 0%,rgba(11,30,58,0) 100%),
    radial-gradient(ellipse 70% 40% at 88% 8%,rgba(212,175,55,0.055) 0%,rgba(11,30,58,0) 100%),
    linear-gradient(rgba(255,255,255,0.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,0.025) 1px,transparent 1px);
  background-size:auto,auto,60px 60px,60px 60px;
  background-attachment:scroll,scroll,fixed,fixed;
  min-height:100vh;
  overflow-x:hidden;
  padding-top:104px
}
img,svg{display:block;max-width:100%}
a{color:inherit;transition:color 0.2s ease,background-color 0.2s ease,border-color 0.2s ease}
ul,ol{list-style:none}
button{font:inherit;border:none;background:none;color:inherit;cursor:pointer}
::selection{background:rgba(212,175,55,0.3);color:var(--c-white)}
:focus-visible{outline:2px solid var(--c-gold);outline-offset:2px;border-radius:4px}

#main-content{position:relative;min-height:70vh;outline:none}
#main-content:focus{outline:none}

.skip-link{
  position:fixed;top:12px;left:24px;z-index:2000;
  padding:10px 24px;
  background:var(--c-gold);color:var(--c-primary);
  font-weight:700;font-size:14px;
  border-radius:var(--radius-capsule);
  text-decoration:none;box-shadow:0 8px 24px rgba(0,0,0,0.4);
  transform:translateY(calc(-100% - 40px));
  transition:transform 0.25s ease
}
.skip-link:focus-visible{transform:translateY(0)}

.scroll-progress{
  position:fixed;top:0;left:0;z-index:1500;
  width:0%;height:3px;
  background:linear-gradient(90deg,var(--c-gold),var(--c-gold-bright));
  border-radius:0 2px 2px 0;
  pointer-events:none
}

.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  padding:16px 24px 0;
  pointer-events:none
}
.header-inner{
  max-width:var(--header-max);
  margin:0 auto;
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:rgba(11,30,58,0.92);
  border:1px solid var(--c-border);
  border-radius:var(--radius-capsule);
  padding:10px 12px 10px 20px;
  box-shadow:0 12px 40px rgba(0,0,0,0.45),inset 0 1px 0 rgba(255,255,255,0.04);
  pointer-events:auto
}
@supports(backdrop-filter:blur(14px)){
  .header-inner{background:rgba(11,30,58,0.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
}
.header-inner::after{
  content:"";position:absolute;left:24px;right:24px;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(212,175,55,0.18),rgba(15,42,74,0.4),rgba(212,175,55,0.18));
  border-radius:1px
}

.brand-logo{display:flex;align-items:center;gap:10px;text-decoration:none;white-space:nowrap;flex-shrink:0}
.brand-mark{
  display:flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:12px;
  background:linear-gradient(135deg,var(--c-gold),var(--c-gold-bright));
  color:var(--c-primary);
  font-family:var(--font-title);font-size:13px;font-weight:900;letter-spacing:0.02em;
  box-shadow:0 4px 12px rgba(212,175,55,0.35)
}
.brand-text{
  font-family:var(--font-title);
  font-size:15px;font-weight:900;letter-spacing:0.05em;line-height:1.2;
  color:var(--c-white)
}

.nav-capsule{position:relative}
.nav-list{display:flex;align-items:center;gap:4px}
.nav-item{position:relative}
.nav-link{
  display:inline-block;
  padding:8px 14px;
  border-radius:var(--radius-capsule);
  font-size:14px;font-weight:600;line-height:1.4;
  color:var(--c-gray);
  text-decoration:none;
  transition:color 0.2s ease,background-color 0.2s ease
}
.nav-link:hover{color:var(--c-white);background:rgba(30,58,95,0.5)}
.nav-link[aria-current="page"]{color:var(--c-gold);background:rgba(212,175,55,0.12)}

.header-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}
.data-sync-badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 12px;
  background:rgba(30,58,95,0.65);
  border:1px solid var(--c-border);
  border-radius:var(--radius-capsule);
  color:var(--c-gray);
  font-size:12px;letter-spacing:0.02em;white-space:nowrap
}
.data-sync-badge::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--c-gold);
  box-shadow:0 0 8px rgba(212,175,55,0.7);
  animation:pulse-dot 2s ease-in-out infinite
}
@keyframes pulse-dot{0%,100%{opacity:1}50%{opacity:0.35}}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 24px;
  border-radius:var(--radius-capsule);
  background:transparent;border:1px solid transparent;
  font-family:var(--font-body);font-size:14px;font-weight:600;line-height:1.5;
  text-decoration:none;
  transition:background-color 0.2s ease,color 0.2s ease,border-color 0.2s ease,box-shadow 0.2s ease
}
.btn-gold{background:var(--c-gold);color:var(--c-primary)}
.btn-gold:hover{background:var(--c-gold-bright);box-shadow:0 6px 20px rgba(212,175,55,0.3)}
.btn-ghost{background:transparent;color:var(--c-white);border-color:var(--c-border)}
.btn-ghost:hover{border-color:var(--c-gold);color:var(--c-gold)}
.header-actions .btn{padding:7px 16px;font-size:13px}

.nav-toggle{
  display:none;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  width:36px;height:36px;border-radius:50%;
  background:rgba(30,58,95,0.4);
  border:1px solid var(--c-border);
  transition:background-color 0.2s ease,border-color 0.2s ease
}
.nav-toggle:hover{background:rgba(30,58,95,0.7)}
.nav-toggle-line{
  display:block;width:16px;height:2px;
  background:var(--c-white);border-radius:2px;
  transition:transform 0.25s ease,opacity 0.2s ease,background-color 0.2s ease
}
.nav-toggle[aria-expanded="true"] .nav-toggle-line{background:var(--c-gold)}
.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)}

.site-footer{
  position:relative;
  margin-top:80px;
  background:
    linear-gradient(180deg,rgba(11,30,58,0) 0%,rgba(15,42,74,0.7) 40%),
    var(--c-primary);
  border-top:1px solid var(--c-border);
  overflow:hidden
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(212,175,55,0.45),transparent)
}
.site-footer::after{
  content:"HG";
  position:absolute;right:-30px;bottom:-80px;z-index:0;
  font-family:var(--font-title);font-size:280px;font-weight:900;
  color:rgba(255,255,255,0.02);letter-spacing:-0.06em;
  pointer-events:none
}
.footer-inner{
  position:relative;z-index:1;
  max-width:var(--header-max);
  margin:0 auto;
  padding:56px 24px 40px;
  display:grid;
  grid-template-columns:5fr 3fr 3fr 4fr;
  gap:48px
}
.footer-logo{
  display:inline-block;
  font-family:var(--font-title);font-size:17px;font-weight:900;letter-spacing:0.04em;
  color:var(--c-white);text-decoration:none;margin-bottom:16px
}
.footer-logo:hover{color:var(--c-gold)}
.footer-desc{
  color:var(--c-gray);font-size:14px;line-height:1.85;
  max-width:360px;margin-bottom:20px
}
.trust-bar{display:flex;flex-wrap:wrap;gap:8px}
.tag-label{
  display:inline-block;
  padding:3px 12px;
  background:rgba(212,175,55,0.1);
  border:1px solid rgba(212,175,55,0.25);
  border-radius:var(--radius-capsule);
  color:var(--c-gold-pale);
  font-size:12px;font-weight:600;letter-spacing:0.06em
}
.trust-item{background:rgba(15,42,74,0.7);border-color:var(--c-border);color:var(--c-gray)}
.footer-title{
  font-family:var(--font-title);
  font-size:13px;font-weight:900;letter-spacing:0.12em;
  color:var(--c-white);
  margin-bottom:14px;
  text-transform:uppercase
}
.footer-nav-list li,.footer-contact-list li{margin-bottom:10px}
.footer-nav-list a,.footer-contact-list a{
  color:var(--c-gray);font-size:14px;text-decoration:none
}
.footer-nav-list a:hover,.footer-contact-list a:hover{color:var(--c-gold)}
.footer-contact-list{color:var(--c-gray);font-size:14px;line-height:1.8}
.footer-bottom{
  position:relative;z-index:1;
  border-top:1px solid var(--c-border);
  padding:18px 24px;
  background:rgba(11,30,58,0.5)
}
.footer-bottom-inner{
  max-width:var(--header-max);margin:0 auto;
  display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap
}
.footer-copyright,.footer-icp{font-size:13px;color:var(--c-gray)}

.back-top{
  position:fixed;right:24px;bottom:24px;z-index:900;
  width:46px;height:46px;border-radius:50%;
  background:rgba(11,30,58,0.92);
  border:1px solid var(--c-gold);
  color:var(--c-gold);
  font-size:22px;line-height:1;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 24px rgba(0,0,0,0.45);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity 0.25s ease,transform 0.25s ease,visibility 0.25s,background-color 0.2s ease,color 0.2s ease
}
.back-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--c-gold);color:var(--c-primary)}
.back-top:focus-visible{outline:2px solid var(--c-white);outline-offset:2px}

.container{width:100%;max-width:var(--header-max);margin:0 auto;padding:0 24px}
.section{padding:var(--space-section) 0}
.section-head{max-width:640px;margin-bottom:40px}
.eyebrow{
  display:inline-block;
  font-family:var(--font-num);
  font-size:12px;letter-spacing:0.2em;text-transform:uppercase;
  color:var(--c-gold);
  margin-bottom:10px
}
.section-title{
  font-family:var(--font-title);
  font-size:32px;font-weight:900;line-height:1.3;
  color:var(--c-white);
  margin-bottom:12px
}
.section-desc{font-size:16px;color:var(--c-gray);line-height:1.8}

.split-screen{
  display:grid;
  grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:48px;align-items:center
}
.split-panel{min-width:0}

.theme-band{
  position:relative;
  padding:80px 0;
  border-top:1px solid var(--c-border);
  border-bottom:1px solid var(--c-border);
  background:rgba(15,42,74,0.3)
}

.grid{display:grid;gap:24px}
.grid-cols-2{grid-template-columns:repeat(2,1fr)}
.grid-cols-3{grid-template-columns:repeat(3,1fr)}

.card{
  background:rgba(15,42,74,0.55);
  border:1px solid var(--c-border);
  border-radius:var(--radius-card);
  padding:24px;
  transition:border-color 0.25s ease,transform 0.25s ease,box-shadow 0.25s ease
}
.card:hover{
  border-color:rgba(212,175,55,0.4);
  transform:translateY(-3px);
  box-shadow:var(--shadow-card)
}
.data-card{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(15,42,74,0.85),rgba(11,30,58,0.95));
  border:1px solid var(--c-border);
  border-radius:20px;
  padding:28px
}
.data-card::after{
  content:"";position:absolute;top:0;right:0;
  width:72px;height:72px;
  border-radius:0 0 0 100%;
  background:radial-gradient(circle at 100% 0%,rgba(212,175,55,0.15),transparent 70%)
}
.stat-block{padding:24px}
.stat-value{
  font-family:var(--font-num);
  font-size:40px;font-weight:700;line-height:1.2;
  color:var(--c-gold)
}
.stat-label{
  font-size:13px;color:var(--c-gray);
  margin-top:4px;letter-spacing:0.03em
}
.stat-trend{
  display:inline-flex;align-items:center;gap:4px;
  font-family:var(--font-num);
  font-size:13px;font-weight:600;
  color:var(--c-red);
  margin-top:8px
}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--c-gray);
  margin-bottom:24px
}
.breadcrumb a{color:var(--c-gray);text-decoration:none}
.breadcrumb a:hover{color:var(--c-gold)}
.breadcrumb-sep{color:var(--c-border);font-family:var(--font-num)}

.img-ratio{position:relative;overflow:hidden;background:var(--c-secondary);border:1px solid var(--c-border);border-radius:var(--radius-card)}
.img-ratio::before{content:"";display:block}
.img-ratio--wide::before{padding-top:56.25%}
.img-ratio--standard::before{padding-top:72%}
.img-ratio--card::before{padding-top:66.67%}
.img-ratio--portrait::before{padding-top:125%}
.img-ratio img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.img-ratio .img-fallback{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  background:
    linear-gradient(rgba(255,255,255,0.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,0.04) 1px,transparent 1px),
    linear-gradient(135deg,var(--c-secondary),var(--c-primary));
  background-size:48px 48px,48px 48px,100% 100%;
  color:rgba(212,175,55,0.4);
  font-family:var(--font-num);font-size:14px;letter-spacing:0.1em
}

.accordion-item{
  background:rgba(15,42,74,0.5);
  border:1px solid var(--c-border);
  border-radius:16px;
  overflow:hidden;
  transition:border-color 0.25s ease
}
.accordion-item[data-open]{border-color:rgba(212,175,55,0.4)}
.accordion-trigger{
  width:100%;
  display:flex;justify-content:space-between;align-items:center;
  padding:18px 24px;
  font-size:16px;font-weight:600;
  color:var(--c-white);
  text-align:left;
  background:transparent;
  transition:color 0.2s ease
}
.accordion-trigger:hover{color:var(--c-gold)}
.accordion-trigger::after{
  content:"+";
  flex-shrink:0;
  font-family:var(--font-num);
  font-size:20px;color:var(--c-gold);
  margin-left:16px;
  transition:transform 0.25s ease
}
.accordion-item[data-open] .accordion-trigger::after{transform:rotate(45deg)}
.accordion-panel{
  max-height:0;overflow:hidden;
  padding:0 24px;
  transition:max-height 0.3s ease,padding 0.3s ease
}
.accordion-item[data-open] .accordion-panel{
  max-height:600px;
  padding:0 24px 20px
}
.accordion-panel p{color:var(--c-gray);font-size:14px;line-height:1.8}

@media (max-width:1200px){
  .data-sync-badge{display:none}
  .nav-link{padding:8px 11px;font-size:13px}
}
@media (max-width:1024px){
  body{padding-top:96px}
  .site-header{padding:12px 16px 0}
  .header-inner{border-radius:26px;padding:10px 12px 10px 16px}
  .nav-capsule{
    position:absolute;top:calc(100% + 10px);left:0;right:0;z-index:-1;
    background:rgba(11,30,58,0.97);
    border:1px solid var(--c-border);
    border-radius:20px;
    padding:10px;
    box-shadow:0 20px 48px rgba(0,0,0,0.55);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity 0.25s ease,transform 0.25s ease,visibility 0.25s
  }
  @supports(backdrop-filter:blur(14px)){
    .nav-capsule{background:rgba(11,30,58,0.9);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
  }
  .nav-capsule[data-open]{
    opacity:1;visibility:visible;transform:translateY(0);z-index:1001
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{
    display:block;padding:13px 16px;border-radius:14px;
    font-size:15px;color:var(--c-white)
  }
  .nav-link:hover{background:rgba(30,58,95,0.5);color:var(--c-white)}
  .nav-link[aria-current="page"]{background:rgba(212,175,55,0.12);color:var(--c-gold)}
  .nav-item + .nav-item{border-top:1px solid rgba(30,58,95,0.45)}
  .nav-toggle{display:flex}
  .footer-inner{grid-template-columns:1fr 1fr;gap:36px}
  .footer-brand{grid-column:1 / -1}
  .split-screen{grid-template-columns:1fr;gap:32px}
  .grid-cols-3{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  body{padding-top:88px}
  .brand-text{display:none}
  .header-actions .btn{padding:6px 12px;font-size:12px}
  .btn-login{display:none}
  .header-inner{gap:8px}
  .grid-cols-2,.grid-cols-3{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr;gap:28px;padding:40px 20px 28px}
  .footer-bottom-inner{flex-direction:column;align-items:flex-start}
  .container{padding:0 16px}
  .section{padding:48px 0}
  .section-title{font-size:26px}
  .back-top{right:16px;bottom:16px;width:42px;height:42px}
  .split-screen{gap:24px}
  .theme-band{padding:48px 0}
  .stat-value{font-size:32px}
}
@media (max-width:380px){
  .brand-mark{width:32px;height:32px;border-radius:10px;font-size:12px}
  .header-actions .btn{padding:5px 10px}
}
@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
  }
  .data-sync-badge::before{animation:none}
  .card:hover{transform:none}
  .scroll-progress{display:none}
}