:root{
  --royal-blue:#1E3A8A;
  --deep-navy:#0F1F4B;
  --gold:#D4AF37;
  --light-gold:#F0E6C0;
  --warm-gray:#F5F5F5;
  --charcoal:#2D2D2D;
  --white:#FFFFFF;
  --stone:#B0A89A;
  --padding-x:clamp(20px,4vw,56px);
  --container-max:1400px;
  --split-left:minmax(280px,40fr);
  --split-right:minmax(0,60fr);
  --serif:"Noto Serif SC","Songti SC",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"Roboto Mono","SFMono-Regular",Consolas,monospace;
}
*,*::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(--sans);
  font-size:16px;
  line-height:1.7;
  color:var(--charcoal);
  background:var(--warm-gray);
  min-height:100vh;
}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
button{font:inherit;border:none;background:none;cursor:pointer;color:inherit}
address{font-style:normal}
main{display:block}
:focus-visible{
  outline:3px solid var(--gold);
  outline-offset:2px;
  border-radius:4px;
}
::selection{background:var(--royal-blue);color:var(--white)}

.skip-link{
  position:fixed;
  top:-100px;
  left:16px;
  z-index:2000;
  padding:12px 24px;
  background:var(--royal-blue);
  color:var(--white);
  font-weight:600;
  border-radius:0 0 8px 8px;
  transition:top .2s ease;
}
.skip-link:focus{top:0;color:var(--white)}

/* ===== Site Shell ===== */
.site-shell{
  width:min(var(--container-max),100%);
  margin:0 auto;
  background:var(--warm-gray);
}
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:var(--white);
  border-bottom:1px solid var(--light-gold);
  box-shadow:0 2px 12px rgba(15,31,75,.06);
}
.header-inner{
  max-width:var(--container-max);
  margin:0 auto;
  padding:0 var(--padding-x);
  display:flex;
  align-items:stretch;
  justify-content:space-between;
  gap:24px;
  min-height:88px;
}
.brand-banner{
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:2px;
  padding:14px 0;
}
.brand-kicker{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.35em;
  color:var(--gold);
  font-weight:500;
}
.brand-name{
  font-family:var(--serif);
  font-size:24px;
  font-weight:700;
  line-height:1.2;
  color:var(--royal-blue);
  letter-spacing:.03em;
}
.brand-edition{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--stone);
  margin-top:2px;
}
.nav-toggle{
  display:none;
  align-self:center;
  width:48px;
  height:48px;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:6px;
  border:1px solid var(--light-gold);
  border-radius:8px;
  background:var(--white);
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle:hover{border-color:var(--gold)}
.nav-toggle-line{
  display:block;
  width:22px;
  height:2px;
  background:var(--royal-blue);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1){transform:translateY(8px) 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(-8px) rotate(-45deg)}

.nav-panel{
  display:flex;
  align-items:stretch;
  gap:28px;
}
.site-nav{
  display:flex;
  align-items:stretch;
  gap:2px;
}
.nav-item{
  display:flex;
  align-items:center;
  padding:0 16px;
  font-family:var(--sans);
  font-size:15px;
  font-weight:500;
  color:var(--charcoal);
  position:relative;
  transition:color .2s ease;
}
.nav-item::after{
  content:"";
  position:absolute;
  left:16px;
  right:16px;
  bottom:0;
  height:3px;
  background:var(--gold);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .25s ease;
}
.nav-item:hover{color:var(--royal-blue)}
.nav-item:hover::after{transform:scaleX(1)}
.nav-item[aria-current="page"]{
  color:var(--royal-blue);
  font-weight:600;
}
.nav-item[aria-current="page"]::after{
  transform:scaleX(1);
  background:var(--royal-blue);
}
.nav-item[aria-current="page"]::before{
  content:"";
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--gold);
  margin-right:8px;
  flex:0 0 auto;
}
.nav-status{
  display:flex;
  align-items:center;
  gap:8px;
  font-family:var(--mono);
  font-size:12px;
  color:var(--stone);
  border-left:1px solid var(--light-gold);
  padding-left:20px;
}
.status-dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--gold);
  box-shadow:0 0 0 3px rgba(212,175,55,.25);
  display:inline-block;
}

/* ===== Footer ===== */
.site-footer{
  background:var(--deep-navy);
  color:#DDE3F0;
  position:relative;
  overflow:hidden;
}
.footer-ornament{
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:4px;
  background:linear-gradient(90deg,var(--royal-blue) 0%,var(--gold) 55%,var(--deep-navy) 100%);
}
.footer-inner{
  max-width:var(--container-max);
  margin:0 auto;
  padding:56px var(--padding-x) 32px;
  display:grid;
  grid-template-columns:2fr 1fr 1.2fr;
  gap:48px;
}
.footer-brand-title{
  font-family:var(--serif);
  font-size:26px;
  font-weight:700;
  color:var(--white);
  margin-bottom:12px;
}
.footer-brand-desc{
  font-size:14px;
  line-height:1.8;
  color:#A9B4D0;
  max-width:340px;
}
.footer-heading{
  font-family:var(--serif);
  font-size:15px;
  font-weight:600;
  color:var(--gold);
  letter-spacing:.08em;
  margin-bottom:16px;
  border-bottom:1px solid rgba(212,175,55,.25);
  padding-bottom:8px;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-link{
  font-size:14px;
  color:#C3CCE3;
  padding:4px 0;
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.footer-link:hover{
  color:var(--gold);
  border-bottom-color:rgba(212,175,55,.4);
}
.footer-contact{
  display:flex;
  flex-direction:column;
  gap:8px;
}
.footer-contact-line{
  font-size:14px;
  color:#C3CCE3;
}
.footer-contact-value{
  color:var(--gold);
  transition:opacity .2s ease;
}
.footer-contact-value:hover{opacity:.75}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px var(--padding-x);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  max-width:var(--container-max);
  margin:0 auto;
}
.footer-copy{
  font-family:var(--mono);
  font-size:12px;
  color:#7E8AB0;
}
.footer-trust{
  font-size:12px;
  color:#7E8AB0;
  max-width:520px;
}

/* ===== Page scaffold ===== */
.frame-band{
  background:var(--royal-blue);
  color:var(--white);
  padding:48px var(--padding-x) 24px;
  border-bottom:1px solid rgba(240,230,192,.25);
}
.content-stage{
  background:var(--warm-gray);
}

/* ===== Common Page Components ===== */
.content-wrap{
  max-width:var(--container-max);
  margin:0 auto;
  padding:48px var(--padding-x) 64px;
}
.page-head{
  padding-bottom:28px;
  margin-bottom:32px;
  border-bottom:1px solid var(--light-gold);
}
.page-type{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.3em;
  color:var(--gold);
  text-transform:uppercase;
  font-weight:500;
}
.page-title{
  font-family:var(--serif);
  font-size:clamp(30px,5vw,48px);
  font-weight:700;
  line-height:1.25;
  color:var(--royal-blue);
  margin-top:6px;
}
.page-lead{
  font-size:17px;
  line-height:1.8;
  color:var(--charcoal);
  max-width:680px;
  margin-top:14px;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--mono);
  font-size:12px;
  color:var(--stone);
  margin-bottom:24px;
}
.breadcrumb a{
  color:var(--royal-blue);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease;
}
.breadcrumb a:hover{border-bottom-color:var(--gold)}
.breadcrumb [aria-current="page"]{
  color:var(--gold);
}

.ruler-line{
  height:2px;
  background:linear-gradient(90deg,var(--gold) 0%,var(--light-gold) 40%,transparent 100%);
  border:none;
}

.split-panel{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:32px;
  align-items:start;
}
.tri-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.cut-card{
  background:var(--white);
  border:1px solid var(--light-gold);
  border-radius:4px;
  padding:28px;
  clip-path:polygon(0 0,calc(100% - 20px) 0,100% 20px,100% 100%,20px 100%,0 calc(100% - 20px));
  transition:border-color .25s ease,box-shadow .25s ease;
}
.cut-card:hover{
  border-color:var(--gold);
  box-shadow:0 8px 24px rgba(30,58,138,.08);
}
.media-cover{
  position:relative;
  background:linear-gradient(135deg,var(--light-gold) 0%,var(--warm-gray) 100%);
  border-radius:4px;
  min-height:220px;
  overflow:hidden;
  border:1px solid var(--light-gold);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--stone);
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.1em;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:var(--royal-blue);
  color:var(--white);
  font-weight:500;
  font-size:15px;
  padding:13px 28px;
  border-radius:4px;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
  text-decoration:none;
}
.btn:hover{
  background:var(--deep-navy);
  transform:translateY(-2px);
  box-shadow:0 8px 20px rgba(30,58,138,.2);
}
.btn-outline{
  background:transparent;
  color:var(--royal-blue);
  border:2px solid var(--royal-blue);
}
.btn-outline:hover{
  background:var(--royal-blue);
  color:var(--white);
}
.btn-gold{
  background:var(--gold);
  color:var(--deep-navy);
}
.btn-gold:hover{
  background:#E8C14A;
}
.chip-button{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-family:var(--mono);
  font-size:12px;
  background:var(--warm-gray);
  border:1px solid var(--light-gold);
  color:var(--royal-blue);
  padding:6px 14px;
  border-radius:999px;
  transition:border-color .2s ease,background .2s ease,color .2s ease;
}
.chip-button:hover{
  border-color:var(--gold);
  background:var(--light-gold);
}
.section-block{
  margin-top:56px;
}
.section-label{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.2em;
  color:var(--gold);
  font-weight:500;
  text-transform:uppercase;
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:20px;
}
.section-label::before{
  content:"";
  width:32px;
  height:2px;
  background:var(--gold);
  display:inline-block;
}
.section-title{
  font-family:var(--serif);
  font-size:clamp(22px,3vw,32px);
  color:var(--royal-blue);
  font-weight:700;
  line-height:1.4;
  margin-bottom:16px;
}

.status-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--mono);
  font-size:12px;
  color:var(--royal-blue);
  background:var(--light-gold);
  border-radius:999px;
  padding:4px 14px 4px 10px;
  letter-spacing:.04em;
}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .nav-panel{gap:12px}
  .nav-item{padding:0 10px;font-size:14px}
  .nav-status{display:none}
  .split-panel{grid-template-columns:1fr}
  .tri-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  .site-header{border-bottom:none}
  .header-inner{
    min-height:68px;
    align-items:center;
  }
  .nav-toggle{
    display:flex;
  }
  .nav-panel{
    display:none;
    position:absolute;
    top:100%;
    left:0;
    right:0;
    background:var(--white);
    flex-direction:column;
    align-items:stretch;
    gap:0;
    border-bottom:3px solid var(--royal-blue);
    box-shadow:0 16px 32px rgba(15,31,75,.16);
    padding:12px 20px 20px;
  }
  .nav-panel[data-open]{
    display:flex;
  }
  .site-nav{
    flex-direction:column;
    gap:2px;
  }
  .nav-item{
    padding:14px 12px;
    border-bottom:1px solid var(--light-gold);
    font-size:16px;
  }
  .nav-item::after{display:none}
  .nav-item[aria-current="page"]::before{
    content:"";
    width:8px;
    height:8px;
    background:var(--gold);
    border-radius:50%;
    margin-right:10px;
    display:inline-block;
  }
  .nav-status{
    display:flex;
    border-left:none;
    padding:12px 12px 0;
  }
  .brand-name{font-size:20px}
  .brand-edition{font-size:10px}
  .footer-inner{
    grid-template-columns:1fr;
    gap:32px;
  }
  .split-panel{grid-template-columns:1fr}
  .tri-grid{grid-template-columns:1fr}
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,
  *::before,
  *::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
}