:root{
  --ink:#16191C;
  --ink-soft:#3E464E;
  --paper:#F5F2EA;
  --ice-deep:#0E2A47;
  --ice-mid:#2C6E9B;
  --frost:#C9DCE8;
  --trust:#12433A;
  --trust-dark:#0B2B26;
  --orange:#F26B1D;
  --orange-hi:#FFA24B;
  --seal:#C4342A;
  --work-gray:#7C8792;
  --rail:1280px;
  --edge:clamp(16px,4vw,40px);
  --line:2px solid var(--ink);
  --shadow-hard:6px 6px 0 rgba(22,25,28,.88);
  --font-display:"Source Han Sans SC ExtraLight","Source Han Sans ExtraLight","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Source Han Sans SC","Source Han Sans","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
h1,h2,h3,h4,h5{margin:0;font-weight:400;letter-spacing:-.01em;line-height:1.2;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;}
::selection{background:var(--orange);color:var(--ink);}
:focus-visible{outline:3px solid var(--orange);outline-offset:3px;}

/* ---------- 布局工具 ---------- */
.wrap{width:100%;max-width:var(--rail);margin:0 auto;padding:0 var(--edge);}
.wrap-narrow{width:100%;max-width:760px;margin:0 auto;padding:0 var(--edge);}
.band{position:relative;padding:clamp(48px,7vw,104px) 0;}
.band-inner{width:100%;max-width:var(--rail);margin:0 auto;padding:0 var(--edge);}
.band--ink{background:var(--ice-deep);color:var(--paper);}
.band--mid{background:var(--ice-mid);color:var(--paper);}
.band--mint{background:var(--trust);color:var(--paper);}
.band--frost{background:var(--frost);color:var(--ink);}
.band--paper{background:var(--paper);color:var(--ink);}

/* ---------- 排版 ---------- */
.display-xl{
  font-family:var(--font-display);
  font-weight:200;
  font-size:clamp(46px,8.4vw,132px);
  line-height:.98;
  letter-spacing:-.02em;
}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.24em;
  color:var(--orange);
  margin-bottom:14px;
}
.lede{font-size:clamp(17px,1.5vw,20px);line-height:1.8;max-width:64ch;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.note{font-size:14px;line-height:1.85;letter-spacing:.04em;color:var(--work-gray);}

.section{position:relative;padding:clamp(36px,5vw,72px) 0;}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:12px clamp(16px,3vw,40px);
  padding-bottom:16px;
  border-bottom:2px solid currentColor;
  margin-bottom:clamp(22px,3vw,44px);
}
.section-index{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.22em;
  color:var(--orange);
  white-space:nowrap;
}
.section-title{
  font-family:var(--font-display);
  font-weight:200;
  font-size:clamp(28px,4.2vw,58px);
  letter-spacing:-.02em;
  line-height:1.05;
}
.is-current .section-title{
  text-decoration:underline;
  text-decoration-color:var(--orange);
  text-decoration-thickness:4px;
  text-underline-offset:12px;
}

/* ---------- 非对称编辑部网格 ---------- */
.editorial{
  display:grid;
  grid-template-columns:minmax(150px,1fr) minmax(0,3fr);
  gap:clamp(20px,4vw,64px);
  align-items:start;
}
.editorial-notes{
  font-size:14px;
  line-height:1.85;
  letter-spacing:.05em;
  color:var(--work-gray);
  border-left:3px solid var(--orange);
  padding-left:14px;
}
.editorial-body{min-width:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:13px 22px;
  border:2px solid var(--ink);
  background:var(--paper);
  color:var(--ink);
  font-size:15px;
  font-weight:600;
  letter-spacing:.06em;
  box-shadow:5px 5px 0 rgba(22,25,28,.88);
  cursor:pointer;
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease;
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:7px 7px 0 rgba(22,25,28,.88);}
.btn:active{transform:translate(1px,1px);box-shadow:3px 3px 0 rgba(22,25,28,.88);}
.btn--primary{background:var(--orange);}
.btn--primary:hover{background:var(--orange-hi);}
.btn--line{background:transparent;color:var(--paper);border-color:var(--paper);box-shadow:5px 5px 0 rgba(255,255,255,.22);}
.btn--line:hover{box-shadow:7px 7px 0 rgba(255,255,255,.3);}
.btn--ghost{background:transparent;box-shadow:none;}

/* ---------- 标签与印章 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 10px;
  border:2px solid var(--ink);
  background:var(--frost);
  color:var(--ink);
  font-size:11px;
  letter-spacing:.18em;
}
.tag--hot{background:var(--orange);}
.tag--seal{background:var(--seal);border-color:#7E1F17;color:#FFF4EF;}
.tag--mint{background:var(--trust);border-color:var(--trust-dark);color:var(--frost);}
.stamp{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:76px;
  height:76px;
  border:3px solid var(--seal);
  border-radius:50%;
  color:var(--seal);
  font-size:12px;
  letter-spacing:.14em;
  text-align:center;
  line-height:1.3;
  transform:rotate(-9deg);
}

/* ---------- 图片容器 ---------- */
.figure{
  margin:0;
  border:2px solid var(--ink);
  background:var(--frost);
  box-shadow:var(--shadow-hard);
}
.figure-media{
  position:relative;
  width:100%;
  aspect-ratio:4/3;
  overflow:hidden;
  background:linear-gradient(150deg,var(--ice-mid),var(--ice-deep));
}
.figure-media img{width:100%;height:100%;object-fit:cover;}
.figure-media figcaption{padding:10px 14px;}
.figure--wide .figure-media{aspect-ratio:16/9;}
.figure--tall .figure-media{aspect-ratio:3/4;}
.figure-cap{
  padding:10px 14px;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--ink);
  background:var(--paper);
  border-top:2px solid var(--ink);
}

/* ---------- 数据读数 ---------- */
.stat-row{display:flex;flex-wrap:wrap;gap:clamp(18px,3vw,48px);}
.stat{min-width:118px;}
.stat-value{
  display:block;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(26px,3.4vw,44px);
  line-height:1.1;
  letter-spacing:-.01em;
}
.stat-label{
  display:block;
  margin-top:6px;
  font-size:12px;
  letter-spacing:.18em;
  color:var(--work-gray);
}

/* ---------- 费率表 ---------- */
.rate-table{width:100%;font-size:15px;}
.rate-table th,.rate-table td{padding:14px 16px;border:1px solid var(--ink);text-align:left;vertical-align:top;}
.rate-table thead th{
  background:var(--ice-mid);
  color:var(--paper);
  font-size:12px;
  font-weight:600;
  letter-spacing:.16em;
}
.rate-table tbody tr:nth-child(even){background:rgba(201,220,232,.38);}
.rate-table td.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}

/* ---------- 折叠 ---------- */
.fold{
  border:2px solid var(--ink);
  background:var(--paper);
  box-shadow:5px 5px 0 rgba(22,25,28,.85);
  margin-bottom:16px;
}
.fold-head{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:16px 18px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  letter-spacing:.03em;
  cursor:pointer;
}
.fold-head::after{content:"＋";font-family:var(--font-mono);color:var(--orange);}
.fold[data-open] .fold-head::after{content:"－";}
.fold-body{display:none;padding:0 18px 18px;font-size:15px;}
.fold[data-open] .fold-body{display:block;}

/* ---------- 面包屑 ---------- */
.breadcrumb{background:var(--frost);border-bottom:2px solid var(--ink);}
.breadcrumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  max-width:var(--rail);
  margin:0 auto;
  padding:12px var(--edge);
  font-size:12px;
  letter-spacing:.14em;
}
.breadcrumb-item{display:inline-flex;align-items:center;gap:10px;color:var(--ink-soft);}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:var(--work-gray);}
.breadcrumb-link{color:var(--ice-deep);border-bottom:2px solid transparent;}
.breadcrumb-link:hover{border-bottom-color:var(--orange);}
.breadcrumb-current{color:var(--ice-deep);font-weight:700;}

/* ---------- 显现 ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .45s ease,transform .45s ease;}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:absolute;
  left:16px;
  top:-80px;
  z-index:200;
  padding:10px 18px;
  background:var(--orange);
  color:var(--ink);
  font-weight:700;
  letter-spacing:.08em;
  border:2px solid var(--ink);
  transition:top .18s ease;
}
.skip-link:focus{top:12px;}

/* ---------- 页头 ---------- */
.site-header{position:sticky;top:0;z-index:60;}
.header-rail{
  position:relative;
  background:var(--ice-deep);
  color:var(--paper);
  border-bottom:3px solid var(--ink);
  box-shadow:0 6px 0 rgba(11,43,38,.32);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:clamp(14px,2.2vw,32px);
  max-width:var(--rail);
  margin:0 auto;
  padding:12px var(--edge);
}
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  position:relative;
  width:34px;
  height:34px;
  border:2px solid var(--paper);
  border-radius:50%;
  background:var(--ice-deep);
  flex:0 0 auto;
}
.brand-mark::before{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:2px;
  height:11px;
  background:var(--orange);
  transform-origin:50% 100%;
  transform:translate(-50%,-100%) rotate(38deg);
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:5px;
  border-radius:50%;
  border:1px dashed rgba(245,242,234,.42);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.06em;}
.brand-sub{font-size:11px;letter-spacing:.18em;color:var(--frost);}

.primary-nav{margin-left:auto;}
.nav-list{display:flex;align-items:center;gap:clamp(8px,1.5vw,24px);}
.nav-item{display:block;}
.nav-link{
  display:inline-block;
  position:relative;
  padding:6px 2px;
  font-size:15px;
  letter-spacing:.04em;
  color:var(--frost);
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:3px;
  background:var(--orange);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:#FFFFFF;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link[aria-current="page"]{color:#FFFFFF;font-weight:700;}
.nav-link[aria-current="page"]::after{transform:scaleX(1);background:var(--orange-hi);}

.header-actions{display:flex;align-items:center;gap:8px;}
.action-link{
  display:inline-block;
  padding:8px 13px;
  font-size:13px;
  letter-spacing:.1em;
  color:var(--paper);
  border:2px solid rgba(245,242,234,.45);
  transition:background .2s ease,border-color .2s ease,color .2s ease;
}
.action-link:hover{background:rgba(201,220,232,.14);border-color:var(--frost);}
.action-link--hot{
  background:var(--orange);
  color:var(--ink);
  border-color:var(--ink);
  font-weight:700;
  box-shadow:3px 3px 0 rgba(22,25,28,.9);
}
.action-link--hot:hover{background:var(--orange-hi);color:var(--ink);}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:8px 12px;
  background:transparent;
  color:var(--paper);
  border:2px solid var(--frost);
  font-size:12px;
  letter-spacing:.16em;
  cursor:pointer;
}
.nav-toggle-bars{
  width:16px;
  height:2px;
  background:var(--orange-hi);
  box-shadow:0 -5px 0 var(--orange-hi),0 5px 0 var(--orange-hi);
}
.site-header[data-open] .nav-toggle{background:rgba(201,220,232,.16);}

.ticker{position:relative;height:12px;background:var(--ice-mid);overflow:hidden;}
.ticker::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(90deg,rgba(11,43,38,.55) 0 1px,transparent 1px 26px);
  pointer-events:none;
}
.ticker-fill{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,var(--orange),var(--orange-hi));
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--trust-dark);
  color:var(--frost);
  border-top:3px solid var(--ink);
}
.footer-inner{
  max-width:var(--rail);
  margin:0 auto;
  padding:clamp(34px,5vw,66px) var(--edge) 24px;
}
.footer-top{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.5fr;
  gap:clamp(20px,3vw,48px);
}
.brand--footer{align-items:flex-start;}
.footer-brand .brand-name{color:var(--paper);}
.footer-brand .brand-sub{color:var(--frost);}
.footer-note{
  margin-top:16px;
  max-width:36ch;
  font-size:13px;
  line-height:1.85;
  letter-spacing:.03em;
  color:rgba(201,220,232,.72);
}
.footer-heading{
  margin-bottom:14px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.22em;
  color:var(--orange-hi);
}
.footer-list li + li{margin-top:9px;}
.footer-link{
  font-size:14px;
  letter-spacing:.04em;
  color:var(--frost);
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.footer-link:hover{color:#FFFFFF;border-bottom-color:var(--orange);}
.footer-contact li{display:grid;gap:3px;margin-bottom:14px;}
.contact-key{font-size:11px;letter-spacing:.2em;color:var(--work-gray);}
.contact-val{font-size:14px;color:var(--paper);word-break:break-word;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px 28px;
  margin-top:clamp(28px,4vw,52px);
  padding-top:18px;
  border-top:2px dashed rgba(201,220,232,.28);
}
.footer-meta{font-size:12px;letter-spacing:.06em;color:rgba(201,220,232,.72);}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:clamp(14px,2.4vw,28px);
  bottom:clamp(14px,2.4vw,28px);
  z-index:80;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 14px;
  background:var(--paper);
  color:var(--ink);
  border:2px solid var(--ink);
  box-shadow:4px 4px 0 rgba(22,25,28,.85);
  font-size:12px;
  letter-spacing:.16em;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease,background .18s ease;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--frost);}
.to-top-hand{
  position:relative;
  width:14px;
  height:14px;
  border:2px solid var(--ink);
  border-radius:50%;
  flex:0 0 auto;
}
.to-top-hand::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:2px;
  height:7px;
  background:var(--orange);
  transform-origin:50% 100%;
  transform:translate(-50%,-90%) rotate(-45deg);
}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .header-inner{flex-wrap:wrap;gap:12px;}
  .brand{margin-right:auto;}
  .nav-toggle{display:inline-flex;order:2;}
  .primary-nav{
    display:none;
    order:3;
    flex-basis:100%;
    margin:0;
    padding-top:12px;
    border-top:1px dashed rgba(201,220,232,.3);
  }
  .header-actions{
    display:none;
    order:4;
    flex-basis:100%;
    margin:0;
    padding-bottom:6px;
  }
  .site-header[data-open] .primary-nav{display:block;}
  .site-header[data-open] .header-actions{display:flex;flex-wrap:wrap;}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;}
  .nav-link{
    display:block;
    padding:12px 2px;
    font-size:16px;
    border-bottom:1px dashed rgba(201,220,232,.22);
  }
  .nav-link::after{display:none;}
  .nav-link[aria-current="page"]{color:var(--orange-hi);}
}

@media (max-width:1000px){
  .editorial{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr 1fr;}
}

@media (max-width:640px){
  body{font-size:15px;}
  .footer-top{grid-template-columns:1fr;}
  .brand-name{font-size:17px;}
  .brand-sub{font-size:10px;letter-spacing:.14em;}
  .stat-row{gap:16px;}
  .rate-table th,.rate-table td{padding:11px 12px;font-size:14px;}
  .to-top{padding:9px 12px;}
}

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