:root{
  --ink:#10192B;
  --navy:#0B1F3A;
  --navy-panel:#16304F;
  --paper:#F7F4EF;
  --signal:#FF5A1F;
  --signal-mist:#FFD9C6;
  --sage:#C7D6C0;
  --sand:#E7E0D4;
  --steel:#5A6B7C;
  --verify:#2F6B55;
  --rail-w:84px;
  --maxw:1360px;
  --gutter:clamp(1.1rem,3.6vw,3.25rem);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-body:"PingFang SC","Noto Sans SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-display:"Helvetica Neue","PingFang SC","Noto Sans SC",system-ui,sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;background:var(--paper)}
body{
  margin:0;
  background:transparent;
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:radial-gradient(circle at 1px 1px,rgba(11,31,58,.055) 1px,transparent 0);
  background-size:6px 6px;
}
img,svg,video{max-width:100%;height:auto}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit}
button{font:inherit;color:inherit}
[id]{scroll-margin-top:130px}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px;border-radius:2px}
::selection{background:var(--signal-mist);color:var(--navy)}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- 排版层 ---------- */
.mono,.stat__value,.figure__caption,.brand__lockup,.site-rail__year,.site-rail__label,.tag,.site-footer__legal-text{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
}
.outline-text{
  color:transparent;
  -webkit-text-stroke:1px var(--signal);
  font-family:var(--font-display);
  font-weight:800;
  letter-spacing:-.04em;
}
@supports not ((-webkit-text-stroke:1px red)){.outline-text{color:var(--signal)}}
.eyebrow{
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.22em;
  color:var(--steel);
  text-transform:none;
}
.lede{font-size:1.08rem;line-height:1.8;color:var(--ink);max-width:60ch}
.muted{color:var(--steel);font-size:.86rem;line-height:1.7}

/* ---------- 容器与栅格 ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
.container--narrow{max-width:78ch;margin:0 auto;padding:0 var(--gutter)}
.grid--12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(1rem,2.4vw,2rem)}
.grid--asym{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,3fr);gap:clamp(1.4rem,3.6vw,3rem);align-items:start}
.grid--asym>*+*{border-left:1px solid var(--sand);padding-left:clamp(1.1rem,2.6vw,2.2rem)}
.prose{max-width:68ch;font-size:1.02rem;line-height:1.85}
.prose p{margin:0 0 1.05em}
.prose h2{font-family:var(--font-display);font-weight:800;letter-spacing:-.03em;font-size:clamp(1.45rem,2.7vw,2.05rem);line-height:1.25;margin:2.1em 0 .55em}
.prose h3{font-family:var(--font-display);font-weight:750;letter-spacing:-.02em;font-size:clamp(1.1rem,1.8vw,1.35rem);line-height:1.35;margin:1.7em 0 .45em}
.prose strong{font-weight:750;color:var(--navy)}
.prose ul,.prose ol{margin:0 0 1.05em;padding-left:1.15em}
.prose ul li{list-style:none;position:relative;margin:0 0 .4em}
.prose ul li::before{content:"";position:absolute;left:-1.05em;top:.78em;width:8px;height:1px;background:var(--signal)}
.prose ol{list-style:decimal}
.prose ol li{margin:0 0 .4em}
.prose a{color:var(--navy);text-decoration:underline;text-decoration-color:var(--signal);text-underline-offset:3px}

/* ---------- 板块 ---------- */
.section{margin:0 0 clamp(3rem,7vw,6rem)}
.section__head{max-width:64ch;margin:0 0 clamp(1.4rem,3vw,2.2rem)}
.section__title{
  font-family:var(--font-display);
  font-weight:800;
  letter-spacing:-.035em;
  line-height:1.06;
  font-size:clamp(1.8rem,4.4vw,3.1rem);
  margin:.35rem 0 0;
}
.section__lede{margin:.8rem 0 0;font-size:1.02rem;color:var(--steel);max-width:56ch}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding:.62rem 1.15rem;
  border-radius:999px;
  border:1px solid transparent;
  font-size:.88rem;
  font-weight:650;
  letter-spacing:.02em;
  text-decoration:none;
  white-space:nowrap;
  cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn--signal{background:var(--signal);color:#fff;box-shadow:0 12px 26px -16px rgba(255,90,31,.9)}
.btn--signal:hover{background:#ff7340}
.btn--ghost{background:transparent;color:var(--paper);border-color:rgba(247,244,239,.34)}
.btn--ghost:hover{border-color:var(--signal);color:#fff}
.btn--ink{background:var(--navy);color:var(--paper)}
.btn--ink:hover{background:var(--navy-panel)}

/* ---------- 页头 ---------- */
.skip-link{
  position:absolute;
  left:1rem;
  top:.6rem;
  z-index:200;
  transform:translateY(-180%);
  padding:.55rem 1.05rem;
  border-radius:999px;
  background:var(--signal);
  color:#fff;
  font-size:.84rem;
  font-weight:650;
  text-decoration:none;
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:none}
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  padding:clamp(.55rem,1.5vw,1rem) var(--gutter);
  background:linear-gradient(180deg,rgba(247,244,239,.96) 0%,rgba(247,244,239,.72) 58%,rgba(247,244,239,0) 100%);
  transition:padding .28s var(--ease);
}
.site-header.is-condensed{padding-top:.35rem;padding-bottom:.35rem}
.site-header__inner{
  position:relative;
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:clamp(.6rem,1.8vw,1.4rem);
  padding:.55rem .5rem .55rem 1.05rem;
  border-radius:999px;
  background:rgba(22,48,79,.9);
  -webkit-backdrop-filter:blur(14px) saturate(1.25);
  backdrop-filter:blur(14px) saturate(1.25);
  border:1px solid rgba(199,214,192,.22);
  box-shadow:0 22px 46px -28px rgba(11,31,58,.85);
  color:var(--paper);
  transition:padding .28s var(--ease),background .28s var(--ease);
}
.site-header.is-condensed .site-header__inner{padding-top:.32rem;padding-bottom:.32rem}
.site-header__cta{flex:0 0 auto}

/* 品牌铭牌 */
.brand{display:flex;flex-direction:column;gap:.05rem;min-width:0}
.brand__link{display:inline-flex;align-items:baseline;gap:.42rem;text-decoration:none;color:var(--paper)}
.brand__mark{
  font-family:var(--font-display);
  font-weight:900;
  font-size:1.06rem;
  letter-spacing:-.03em;
  line-height:1.1;
}
.brand__mark::after{
  content:"";
  display:inline-block;
  width:6px;height:6px;
  margin-left:.34rem;
  background:var(--signal);
  vertical-align:middle;
}
.brand__lockup{font-size:.66rem;letter-spacing:.2em;color:var(--sage);text-decoration:none}
.brand__tagline{
  font-family:var(--font-mono);
  font-size:.63rem;
  letter-spacing:.1em;
  color:rgba(199,214,192,.72);
  line-height:1.4;
  white-space:nowrap;
}

/* 主导航 */
.site-nav{margin-left:auto}
.site-nav__list{display:flex;align-items:center;gap:.12rem}
.site-nav__item{display:flex}
.site-nav__link{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:.44rem .78rem;
  border-radius:999px;
  font-size:.88rem;
  letter-spacing:.02em;
  color:rgba(247,244,239,.8);
  text-decoration:none;
  white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.site-nav__link:hover{color:#fff;background:rgba(247,244,239,.1)}
.site-nav__link[aria-current="page"]{
  color:#fff;
  background:rgba(255,90,31,.16);
  box-shadow:inset 0 0 0 1px rgba(255,90,31,.62);
}
.site-nav__link[aria-current="page"]::before{
  content:"";
  display:inline-block;
  width:6px;height:6px;
  margin-right:.45rem;
  border-radius:50%;
  background:var(--signal);
}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:.5rem;
  margin-left:auto;
  padding:.46rem .85rem;
  border-radius:999px;
  background:rgba(247,244,239,.08);
  border:1px solid rgba(247,244,239,.26);
  color:var(--paper);
  font-size:.8rem;
  letter-spacing:.08em;
  cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle:hover{background:rgba(247,244,239,.16)}
.nav-toggle__bars{position:relative;display:block;width:16px;height:10px}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";
  position:absolute;left:0;right:0;
  height:1.5px;
  background:currentColor;
  transition:transform .22s var(--ease),top .22s var(--ease),bottom .22s var(--ease);
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{bottom:0}
.site-header[data-open] .nav-toggle__bars::before{top:4.2px;transform:rotate(45deg)}
.site-header[data-open] .nav-toggle__bars::after{bottom:4.2px;transform:rotate(-45deg)}
.nav-toggle__label{line-height:1}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(3rem,8vw,6rem);
  padding:clamp(2.6rem,6vw,4.6rem) 0 clamp(1.4rem,3vw,2rem);
  background:var(--navy);
  color:rgba(247,244,239,.86);
}
.site-footer::before{
  content:"";
  position:absolute;top:0;left:0;right:0;
  height:3px;
  background:repeating-linear-gradient(90deg,var(--signal) 0 28px,transparent 28px 56px);
  opacity:.75;
}
.site-footer__grid{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 var(--gutter);
  display:grid;
  grid-template-columns:minmax(0,1.7fr) repeat(4,minmax(0,1fr));
  gap:clamp(1.6rem,4vw,3rem);
}
.site-footer__brand{min-width:0}
.site-footer__lockup{
  font-family:var(--font-display);
  font-weight:900;
  font-size:1.16rem;
  letter-spacing:-.03em;
  color:var(--paper);
}
.site-footer__tagline{
  margin:.35rem 0 1.1rem;
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.14em;
  color:var(--sage);
}
.site-footer__contact{display:flex;flex-direction:column;gap:.35rem;max-width:34ch}
.site-footer__contact li{
  position:relative;
  padding-left:1rem;
  font-size:.82rem;
  line-height:1.7;
  color:rgba(247,244,239,.66);
}
.site-footer__contact li::before{
  content:"";
  position:absolute;left:0;top:.72em;
  width:7px;height:1px;
  background:var(--signal);
}
.footer-col{min-width:0}
.footer-col__title{
  font-family:var(--font-mono);
  font-size:.72rem;
  font-weight:500;
  letter-spacing:.2em;
  color:var(--sage);
  margin:0 0 .9rem;
}
.footer-col__list{display:flex;flex-direction:column;gap:.45rem}
.footer-col__link{
  display:inline-block;
  font-size:.88rem;
  color:rgba(247,244,239,.82);
  text-decoration:none;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col__link:hover{color:var(--signal);transform:translateX(3px)}
.site-footer__legal{
  width:100%;
  max-width:var(--maxw);
  margin:clamp(2rem,5vw,3.2rem) auto 0;
  padding:1.2rem var(--gutter) 0;
  border-top:1px solid rgba(199,214,192,.2);
  display:flex;
  flex-wrap:wrap;
  gap:.4rem 1.6rem;
  justify-content:space-between;
  align-items:baseline;
}
.site-footer__legal-text{
  font-size:.74rem;
  letter-spacing:.03em;
  color:rgba(247,244,239,.6);
  line-height:1.7;
}

/* ---------- 读数与数据面板 ---------- */
.stat{display:flex;flex-direction:column;gap:.25rem}
.stat__value{
  font-size:clamp(1.9rem,5vw,3.4rem);
  font-weight:600;
  line-height:1;
  letter-spacing:-.03em;
  color:var(--navy);
}
.stat__unit{font-size:.82rem;font-family:var(--font-mono);color:var(--steel);margin-left:.28rem;letter-spacing:.06em}
.stat__label{font-size:.82rem;color:var(--steel);letter-spacing:.02em}
.panel{
  position:relative;
  padding:clamp(1.15rem,2.8vw,1.9rem);
  border:1px solid var(--sand);
  border-radius:6px;
  background:var(--paper);
}
.panel--navy{background:var(--navy);border-color:transparent;color:rgba(247,244,239,.88)}
.panel--navy .stat__value{color:var(--paper)}
.panel--navy .stat__label,.panel--navy .stat__unit{color:rgba(199,214,192,.78)}
.panel--glass{
  background:rgba(247,244,239,.74);
  -webkit-backdrop-filter:blur(12px) saturate(1.2);
  backdrop-filter:blur(12px) saturate(1.2);
  border-color:rgba(11,31,58,.1);
  box-shadow:0 28px 56px -34px rgba(11,31,58,.55);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.26rem .6rem;
  border-radius:2px;
  font-size:.7rem;
  letter-spacing:.08em;
  background:var(--sage);
  color:var(--navy);
}
.tag--signal{background:var(--signal);color:#fff}
.tag--verify{background:transparent;border:1px solid var(--verify);color:var(--verify)}
.tag--verify::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--verify)}

/* ---------- 面包屑 ---------- */
.breadcrumbs{margin:0 0 clamp(1.2rem,3vw,2rem)}
.breadcrumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:.45rem;font-family:var(--font-mono);font-size:.74rem;letter-spacing:.06em}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:.45rem;color:var(--steel)}
.breadcrumbs__item+.breadcrumbs__item::before{content:"/";color:var(--sand)}
.breadcrumbs__link{color:var(--steel);text-decoration:none;transition:color .2s var(--ease)}
.breadcrumbs__link:hover{color:var(--signal)}
.breadcrumbs__current{color:var(--navy)}

/* ---------- 图片容器 ---------- */
.figure{margin:0 0 clamp(1.5rem,4vw,2.5rem);position:relative}
.figure__frame{
  position:relative;
  display:block;
  aspect-ratio:4/3;
  overflow:hidden;
  background:var(--sand);
  border:1px solid var(--sand);
  border-radius:4px;
}
.figure__frame img,.figure__frame picture,.figure__frame svg{display:block;width:100%;height:100%;object-fit:cover}
.figure__frame::after{
  content:"";
  position:absolute;
  right:8px;bottom:8px;
  width:26px;height:26px;
  border-right:1px solid var(--signal);
  border-bottom:1px solid var(--signal);
  pointer-events:none;
}
.figure__caption{
  margin-top:.7rem;
  font-size:.74rem;
  letter-spacing:.03em;
  color:var(--steel);
  line-height:1.65;
}
.figure--wide .figure__frame{aspect-ratio:16/9}
.figure--tall .figure__frame{aspect-ratio:3/4}
.figure--inset{margin-left:clamp(-4rem,-5vw,-1rem)}

/* ---------- 年份刻度轴 ---------- */
.rail-layout{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 var(--gutter);
  display:grid;
  grid-template-columns:var(--rail-w) minmax(0,1fr);
  align-items:start;
}
.site-rail{
  position:sticky;
  top:0;
  z-index:5;
  height:100vh;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:.4rem;
  border-right:1px solid var(--sand);
  overflow:hidden;
}
.site-rail__label{
  align-self:center;
  writing-mode:vertical-rl;
  font-size:.58rem;
  letter-spacing:.26em;
  color:var(--steel);
  margin-bottom:.9rem;
}
.site-rail__list{display:flex;flex-direction:column;align-items:center;gap:.05rem;overflow-y:auto;padding:.4rem 0}
.site-rail__item{display:block}
.site-rail__node{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:.4rem;
  padding:.42rem .2rem;
  text-decoration:none;
  color:var(--steel);
  transition:color .2s var(--ease);
}
.site-rail__tick{
  display:block;
  width:1px;
  height:18px;
  background:var(--sand);
  transition:height .22s var(--ease),width .22s var(--ease),background .22s var(--ease);
}
.site-rail__year{
  font-size:.62rem;
  letter-spacing:.14em;
  writing-mode:vertical-rl;
  transition:color .2s var(--ease);
}
.site-rail__node:hover .site-rail__tick{background:var(--signal)}
.site-rail__node:hover .site-rail__year{color:var(--ink)}
.site-rail__item.is-active .site-rail__tick{background:var(--signal);width:2px;height:28px}
.site-rail__item.is-active .site-rail__year{color:var(--signal)}

/* ---------- JS 生成的浮层 ---------- */
.scroll-progress{
  position:fixed;
  top:0;left:0;
  z-index:200;
  height:3px;
  width:0;
  background:var(--signal);
  transition:width .1s linear;
}
.back-to-top{
  position:fixed;
  right:clamp(1rem,3vw,2rem);
  bottom:clamp(1rem,3vw,2rem);
  z-index:110;
  width:52px;height:52px;
  display:grid;
  place-items:center;
  border-radius:50%;
  border:1px solid rgba(199,214,192,.34);
  background:var(--navy);
  color:var(--paper);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(14px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease),background .2s var(--ease);
}
.back-to-top::before{content:"↑";font-size:1.05rem;line-height:1}
.back-to-top:hover{background:var(--signal);border-color:var(--signal)}
.back-to-top.is-visible{opacity:1;visibility:visible;transform:none}
.back-to-top.is-yielding{opacity:0;visibility:hidden;transform:translateY(72px)}

/* ---------- 平板 ---------- */
@media (max-width:1080px){
  .grid--asym{grid-template-columns:minmax(0,1fr)}
  .grid--asym>*+*{border-left:0;padding-left:0;border-top:1px solid var(--sand);padding-top:clamp(1rem,3vw,1.6rem)}
  .site-footer__grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .site-footer__brand{grid-column:1/-1}
}
@media (max-width:1000px){
  .brand__tagline{display:none}
  .site-nav__link{padding:.44rem .6rem;font-size:.84rem}
}

/* ---------- 移动 ---------- */
@media (max-width:960px){
  body{font-size:16.5px}
  .nav-toggle{display:inline-flex}
  .site-header__cta{display:none}
  .site-nav{
    display:none;
    position:absolute;
    top:calc(100% + 10px);
    left:0;right:0;
    padding:.6rem;
    border-radius:22px;
    background:rgba(11,31,58,.97);
    -webkit-backdrop-filter:blur(16px);
    backdrop-filter:blur(16px);
    border:1px solid rgba(199,214,192,.22);
    box-shadow:0 30px 60px -30px rgba(11,31,58,.95);
  }
  .site-header[data-open] .site-nav,
  .site-nav[data-open]{display:block}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:.1rem}
  .site-nav__item{width:100%}
  .site-nav__link{
    width:100%;
    padding:.72rem .9rem;
    border-radius:14px;
    font-size:.95rem;
  }
  .site-nav__link[aria-current="page"]{box-shadow:inset 0 0 0 1px rgba(255,90,31,.55)}

  .rail-layout{grid-template-columns:minmax(0,1fr);padding:0}
  .site-rail{
    position:static;
    height:auto;
    flex-direction:row;
    align-items:center;
    justify-content:flex-start;
    gap:.75rem;
    padding:.55rem var(--gutter);
    border-right:0;
    border-bottom:1px solid var(--sand);
    overflow-x:auto;
  }
  .site-rail__label{writing-mode:horizontal-tb;margin:0;flex:0 0 auto}
  .site-rail__list{flex-direction:row;align-items:center;gap:.85rem;overflow:visible}
  .site-rail__node{flex-direction:row;gap:.4rem;padding:.2rem 0}
  .site-rail__tick{width:14px;height:2px}
  .site-rail__year{writing-mode:horizontal-tb}
  .site-rail__item.is-active .site-rail__tick{width:24px;height:2px}
  .site-rail__item.is-active .site-rail__year{color:var(--signal)}
}
@media (max-width:640px){
  .site-footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-footer__contact{max-width:none}
  .site-footer__legal{flex-direction:column;align-items:flex-start;gap:.5rem}
  .figure--inset{margin-left:0}
  .container--narrow{padding:0 var(--gutter)}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
}