:root{
  --deep-blue:#0e1a2b;
  --primary-blue:#123a5e;
  --gold:#d4af37;
  --gold-light:#f0d78c;
  --cream:#faf7f0;
  --ink-dark:#1a1a1a;
  --text-muted:#5a5a5a;
  --line:#e0d8c8;
  --alert:#e85d3d;
  --surface-white:#ffffff;
  --header-h:72px;
  --container:1200px;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-pill:999px;
  --shadow-body:0 12px 40px rgba(14,26,43,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{
  box-sizing:border-box;
  margin:0;
  padding:0;
}

html{
  scroll-behavior:smooth;
}

body{
  margin:0;
  min-height:100vh;
  background:var(--cream);
  color:var(--ink-dark);
  font-family:"Noto Serif SC","Source Han Serif",Georgia,serif;
  font-size:16px;
  line-height:1.7;
  text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{
  font-family:"Noto Sans SC","Microsoft YaHei",sans-serif;
  font-weight:800;
  line-height:1.2;
}

a{
  color:inherit;
  text-decoration:none;
}

button,input,select,textarea{
  font:inherit;
}

button{
  border:none;
  background:none;
  cursor:pointer;
  color:inherit;
}

ul,ol{
  list-style:none;
}

img{
  display:block;
  max-width:100%;
}

address{
  font-style:normal;
}

:focus-visible{
  outline:3px solid var(--gold);
  outline-offset:3px;
  border-radius:6px;
}

::selection{
  background:var(--gold);
  color:var(--deep-blue);
}

#main-content{
  min-height:65vh;
  scroll-margin-top:calc(var(--header-h) + 16px);
}

.container{
  width:min(100% - 40px,var(--container));
  margin-inline:auto;
}

.container-narrow{
  width:min(100% - 40px,860px);
  margin-inline:auto;
}

.skip-link{
  position:fixed;
  top:12px;
  left:12px;
  z-index:300;
  display:inline-flex;
  align-items:center;
  padding:8px 16px;
  background:var(--gold);
  color:var(--deep-blue);
  border-radius:var(--radius-pill);
  font-family:"Noto Sans SC","Microsoft YaHei",sans-serif;
  font-weight:700;
  font-size:14px;
  box-shadow:0 8px 24px rgba(0,0,0,.25);
  transform:translateY(-240%);
  transition:transform .2s var(--ease);
}

.skip-link:focus{
  transform:translateY(0);
}

.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:120;
  min-height:var(--header-h);
  background:linear-gradient(180deg,rgba(5,10,20,.88),rgba(5,10,20,.46));
  border-bottom:1px solid rgba(212,175,55,0);
  transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}

.site-header[data-scrolled="true"]{
  background:linear-gradient(180deg,rgba(6,12,24,.97),rgba(8,15,30,.99));
  border-bottom-color:rgba(212,175,55,.25);
  box-shadow:0 8px 24px rgba(0,0,0,.18);
}

.header-inner{
  display:flex;
  align-items:center;
  gap:16px;
  min-height:var(--header-h);
  position:relative;
}

.main-nav{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:16px;
}

.header-cta{
  flex:0 0 auto;
}

.scroll-progress{
  position:absolute;
  left:0;
  bottom:0;
  height:2px;
  width:100%;
  z-index:2;
  background:linear-gradient(90deg,var(--gold),var(--gold-light));
  transform:scaleX(var(--scroll-progress,0));
  transform-origin:0 50%;
  pointer-events:none;
  will-change:transform;
}

.site-brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  color:var(--cream);
}

.brand-mark{
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  border-radius:15px;
  background:linear-gradient(135deg,var(--gold),var(--gold-light));
  color:var(--deep-blue);
  font-family:"Noto Sans SC","Microsoft YaHei",sans-serif;
  font-weight:900;
  font-size:22px;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.35),0 6px 16px rgba(0,0,0,.22);
}

.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.15;
}

.brand-name{
  font-family:"Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:20px;
  font-weight:900;
  letter-spacing:.06em;
  color:var(--cream);
}

.brand-caption{
  margin-top:2px;
  font-family:"Noto Serif SC","Source Han Serif",Georgia,serif;
  font-size:11px;
  letter-spacing:.18em;
  color:rgba(255,255,255,.65);
}

.nav-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:flex-end;
  gap:2px;
}

.nav-link{
  display:block;
  padding:9px 14px;
  border-radius:var(--radius-pill);
  color:rgba(255,255,255,.84);
  font-family:"Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:15px;
  font-weight:600;
  letter-spacing:.03em;
  transition:color .2s,background .2s,transform .2s var(--ease);
}

.nav-link:hover{
  color:var(--gold-light);
  background:rgba(212,175,55,.12);
  transform:translateY(-1px);
}

.nav-link[aria-current="page"]{
  color:var(--gold);
  background:rgba(212,175,55,.14);
  box-shadow:inset 0 0 0 1px rgba(212,175,55,.35);
}

.nav-toggle{
  display:none;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 18px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-family:"Noto Sans SC","Microsoft YaHei",sans-serif;
  font-weight:700;
  font-size:15px;
  line-height:1.2;
  text-align:center;
  position:relative;
  overflow:hidden;
  transition:transform .2s var(--ease),background .25s,color .25s,border-color .25s,box-shadow .25s;
}

.btn::after{
  content:"";
  position:absolute;
  left:0;
  top:0;
  width:100%;
  height:100%;
  border-radius:inherit;
  background:radial-gradient(circle at var(--x,50%) var(--y,50%),rgba(255,255,255,.5),transparent 42%);
  opacity:0;
  transition:opacity .35s;
  pointer-events:none;
}

.btn:active::after{
  opacity:1;
  transition:0s;
}

.btn:active{
  transform:translateY(1px) scale(.99);
}

.btn-gold{
  background:linear-gradient(135deg,var(--gold),var(--gold-light));
  color:var(--deep-blue);
  box-shadow:inset 0 -2px 0 rgba(0,0,0,.14),0 8px 20px rgba(212,175,55,.22);
}

.btn-gold:hover{
  transform:translateY(-1px);
  box-shadow:0 10px 24px rgba(212,175,55,.32);
}

.btn-outline{
  border-color:rgba(212,175,55,.7);
  color:var(--gold);
}

.btn-outline:hover{
  background:rgba(212,175,55,.12);
  color:var(--gold-light);
  border-color:var(--gold);
}

.btn-sm{
  padding:8px 14px;
  font-size:14px;
}

.site-footer{
  position:relative;
  background:linear-gradient(180deg,var(--deep-blue),#09111d);
  color:var(--cream);
  border-top:1px solid rgba(212,175,55,.3);
  padding-top:72px;
  overflow:hidden;
}

.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  right:0;
  width:280px;
  height:280px;
  background:radial-gradient(circle,rgba(212,175,55,.14),transparent 65%);
  pointer-events:none;
}

.site-footer .container{
  position:relative;
}

.footer-container{
  padding-bottom:28px;
}

.footer-top{
  display:grid;
  grid-template-columns:minmax(260px,1.05fr) minmax(0,2.2fr);
  gap:56px;
}

.footer-profile .site-brand{
  margin-bottom:20px;
}

.footer-profile .brand-mark{
  width:48px;
  height:48px;
  font-size:24px;
}

.site-brand--footer .brand-caption{
  color:rgba(255,255,255,.55);
}

.footer-trust{
  max-width:480px;
  padding:14px 16px;
  background:rgba(212,175,55,.12);
  border-left:3px solid var(--gold);
  border-radius:0 16px 16px 0;
  color:var(--gold-light);
  font-family:"Noto Sans SC","Microsoft YaHei",sans-serif;
  font-weight:600;
  font-size:15px;
  line-height:1.6;
}

.footer-note{
  max-width:480px;
  margin-top:18px;
  color:rgba(255,255,255,.62);
  font-size:14px;
  line-height:1.7;
}

.footer-columns{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}

.footer-heading{
  margin-bottom:16px;
  padding-bottom:8px;
  border-bottom:1px solid rgba(212,175,55,.25);
  color:var(--gold-light);
  font-size:15px;
  font-weight:800;
  letter-spacing:.1em;
}

.footer-links li + li{
  margin-top:8px;
}

.footer-links a{
  position:relative;
  display:inline-block;
  color:rgba(255,255,255,.78);
  padding-left:0;
  transition:color .2s,padding-left .2s var(--ease);
}

.footer-links a:hover{
  color:var(--gold);
  padding-left:8px;
}

.footer-contact{
  color:rgba(255,255,255,.72);
  font-size:14px;
}

.footer-address{
  display:grid;
  gap:10px;
  line-height:1.6;
  word-break:break-word;
}

.footer-row{
  display:block;
}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-top:64px;
  padding-top:20px;
  border-top:1px solid rgba(212,175,55,.18);
  color:rgba(255,255,255,.55);
  font-size:13px;
}

.footer-bottom p{
  margin:0;
}

.to-top{
  position:fixed;
  right:18px;
  bottom:18px;
  z-index:80;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:48px;
  height:48px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--gold),var(--gold-light));
  color:var(--deep-blue);
  font-size:20px;
  box-shadow:0 10px 24px rgba(0,0,0,.28);
  opacity:0;
  visibility:hidden;
  transform:translateY(12px) scale(.9);
  transition:transform .25s var(--ease),opacity .25s,visibility .25s;
  pointer-events:none;
}

.to-top[data-shown="true"]{
  opacity:1;
  visibility:visible;
  transform:none;
  pointer-events:auto;
}

.to-top:hover{
  background:var(--gold-light);
  transform:translateY(-2px);
}

.to-top-icon{
  line-height:1;
}

.section{
  padding-block:80px;
}

.section-kicker{
  margin-bottom:8px;
  font-family:"Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:14px;
  font-weight:800;
  letter-spacing:.16em;
  color:var(--gold);
}

.section-title{
  font-size:clamp(26px,4vw,40px);
  font-weight:900;
  letter-spacing:-.01em;
}

.lead{
  max-width:720px;
  font-size:18px;
  line-height:1.7;
  color:var(--text-muted);
}

.page-heading{
  padding-block:96px 40px;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:"Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:13px;
  font-weight:800;
  letter-spacing:.14em;
  color:var(--gold);
}

.eyebrow::before{
  content:"";
  width:24px;
  height:2px;
  background:currentColor;
  border-radius:2px;
}

.grid{
  display:grid;
  gap:24px;
}

.grid-2{
  grid-template-columns:repeat(2,minmax(0,1fr));
}

.grid-3{
  grid-template-columns:repeat(3,minmax(0,1fr));
}

.grid-4{
  grid-template-columns:repeat(4,minmax(0,1fr));
}

.card{
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:24px;
  background:var(--surface-white);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:0 1px 0 rgba(14,26,43,.02);
  transition:border-color .25s,transform .25s var(--ease),box-shadow .25s var(--ease);
}

.card:hover{
  border-color:rgba(212,175,55,.65);
  transform:translateY(-3px);
  box-shadow:var(--shadow-body);
}

.card-title{
  font-size:20px;
  font-weight:900;
}

.card-text{
  color:var(--text-muted);
  font-size:15px;
}

.card-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--primary-blue);
  font-family:"Noto Sans SC","Microsoft YaHei",sans-serif;
  font-weight:700;
  font-size:14px;
}

.card-link:hover{
  color:var(--gold);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:4px;
  padding:4px 12px;
  border-radius:var(--radius-pill);
  background:rgba(212,175,55,.16);
  color:var(--primary-blue);
  font-family:"Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:13px;
  font-weight:700;
  letter-spacing:.02em;
}

.tag--outline{
  background:transparent;
  border:1px solid rgba(212,175,55,.6);
  color:var(--gold);
}

.breadcrumb{
  padding-block:20px 8px;
}

.breadcrumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}

.breadcrumb-item{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-muted);
}

.breadcrumb-item + .breadcrumb-item::before{
  content:"/";
  color:var(--line);
}

.breadcrumb-item a{
  color:var(--primary-blue);
  font-weight:600;
}

.breadcrumb-item a:hover{
  color:var(--gold);
}

.breadcrumb-item[aria-current="page"]{
  color:var(--gold);
  font-weight:700;
}

.index-map{
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:var(--surface-white);
  overflow:hidden;
}

.index-cluster{
  display:grid;
  grid-template-columns:64px 1fr;
  gap:20px;
  padding:22px 24px;
}

.index-cluster + .index-cluster{
  border-top:1px solid var(--line);
}

.index-cluster-marker{
  font-family:"Noto Sans SC","Microsoft YaHei",sans-serif;
  font-weight:900;
  font-size:20px;
  color:var(--gold);
}

.index-cluster-title{
  font-size:19px;
  font-weight:800;
}

.index-cluster-text{
  margin-top:4px;
  color:var(--text-muted);
  font-size:15px;
}

.index-cluster-link{
  display:inline-block;
  margin-top:10px;
  color:var(--primary-blue);
  font-family:"Noto Sans SC","Microsoft YaHei",sans-serif;
  font-weight:700;
  font-size:14px;
}

.index-cluster-link:hover{
  color:var(--gold);
}

.fig{
  position:relative;
  min-height:220px;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:linear-gradient(135deg,var(--deep-blue),var(--primary-blue));
}

.fig img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
}

.fig-caption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:14px 16px;
  color:var(--gold-light);
  background:linear-gradient(transparent,rgba(5,10,20,.72));
  font-family:"Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:13px;
}

.image-placeholder{
  position:relative;
  min-height:220px;
  border-radius:var(--radius-lg);
  overflow:hidden;
  display:grid;
  place-items:center;
  background:linear-gradient(135deg,var(--deep-blue),var(--primary-blue));
}

.image-placeholder::before{
  content:"";
  position:absolute;
  right:-20%;
  bottom:-30%;
  width:60%;
  height:60%;
  background:radial-gradient(circle,rgba(212,175,55,.25),transparent 70%);
}

.image-placeholder::after{
  content:attr(data-label);
  position:absolute;
  left:16px;
  bottom:14px;
  z-index:1;
  color:var(--gold-light);
  font-family:"Noto Sans SC","Microsoft YaHei",sans-serif;
  font-weight:700;
  font-size:14px;
  letter-spacing:.06em;
}

html.js [data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}

html.js [data-reveal].is-revealed{
  opacity:1;
  transform:none;
}

html.nav-open{
  overflow:hidden;
}

@media(max-width:960px){
  .container{
    width:min(100% - 28px,var(--container));
  }

  .header-cta{
    display:none;
  }

  .nav-toggle{
    display:inline-flex;
    align-items:center;
    gap:8px;
    min-height:44px;
    margin-left:auto;
    padding:6px 10px;
    color:var(--cream);
    border-radius:var(--radius-pill);
  }

  .nav-toggle-box{
    width:20px;
    height:16px;
    position:relative;
  }

  .nav-toggle-box span{
    position:absolute;
    left:0;
    width:100%;
    height:2px;
    border-radius:2px;
    background:currentColor;
    transition:transform .25s var(--ease),opacity .2s;
  }

  .nav-toggle-box span:nth-child(1){
    top:0;
  }

  .nav-toggle-box span:nth-child(2){
    top:7px;
  }

  .nav-toggle-box span:nth-child(3){
    top:14px;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(1){
    transform:translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(2){
    opacity:0;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(3){
    transform:translateY(-7px) rotate(-45deg);
  }

  .nav-toggle-label{
    font-family:"Noto Sans SC","Microsoft YaHei",sans-serif;
    font-size:13px;
    font-weight:700;
    letter-spacing:.08em;
  }

  .main-nav{
    position:fixed;
    top:var(--header-h);
    left:0;
    right:0;
    bottom:0;
    z-index:110;
    margin-left:0;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:24px;
    padding:28px 24px 48px;
    background:linear-gradient(180deg,rgba(6,12,24,.98),rgba(10,20,36,.99));
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(10px);
    transition:opacity .25s var(--ease),visibility .25s,transform .25s var(--ease);
    pointer-events:none;
  }

  .main-nav[data-open="true"]{
    opacity:1;
    visibility:visible;
    transform:none;
    pointer-events:auto;
  }

  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:4px;
  }

  .nav-link{
    padding:14px 18px;
    font-size:18px;
    border-radius:16px;
    color:rgba(255,255,255,.9);
  }

  .nav-link:hover{
    transform:none;
  }

  .footer-top{
    grid-template-columns:1fr;
    gap:40px;
  }

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

  .section{
    padding-block:64px;
  }

  .grid-3{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }

  .grid-4{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
}

@media(max-width:640px){
  .footer-columns{
    grid-template-columns:1fr;
    gap:28px;
  }

  .footer-bottom{
    flex-direction:column;
    align-items:flex-start;
  }

  .to-top{
    right:14px;
    bottom:14px;
    width:44px;
    height:44px;
  }

  .grid-2,
  .grid-3,
  .grid-4{
    grid-template-columns:1fr;
  }
}

@media(max-width:420px){
  .brand-caption{
    display:none;
  }

  .brand-name{
    font-size:18px;
  }

  .nav-toggle-label{
    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;
  }

  html.js [data-reveal]{
    opacity:1 !important;
    transform:none !important;
  }
}