:root{
  --ink:#0A1220;
  --panel:#111C2E;
  --gold:#E8B23A;
  --red:#FF4D4F;
  --yellow:#F5C542;
  --cyan:#35E0D0;
  --gray:#8A97A8;
  --white:#E9EEF5;
  --line:#1E3350;
  --gold-deep:#7A5A16;
  --hard:6px 6px 0 rgba(30,51,80,.95);
  --hard-gold:6px 6px 0 rgba(122,90,22,.55);
  --gutter:clamp(18px,4.6vw,64px);
  --maxw:1320px;
  --header-h:84px;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei UI","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"SF Mono","JetBrains Mono","Roboto Mono",ui-monospace,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink);
  color:var(--white);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.012em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{list-style:none;padding:0}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
::selection{background:var(--gold);color:var(--ink)}
.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}

.skip-link{
  position:fixed;top:0;left:0;z-index:200;
  transform:translateY(-120%);
  background:var(--gold);color:var(--ink);
  font-weight:800;font-size:14px;
  padding:12px 20px;
  border:2px solid var(--ink);
  transition:transform .18s ease;
}
.skip-link:focus{transform:translateY(0)}

#main-content{padding-top:var(--header-h)}

/* ===== 排版基础 ===== */
.display{font-size:clamp(40px,6.6vw,72px);line-height:1.06;font-weight:900;letter-spacing:-.02em}
.section-title{font-size:clamp(26px,3.4vw,40px);line-height:1.2;font-weight:900;letter-spacing:-.01em}
.section-lead{max-width:62ch;color:var(--gray);font-size:clamp(15px,1.5vw,17px);line-height:1.8}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.08em}
.rule{display:block;width:64px;height:2px;background:var(--gold);border:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:11px;font-weight:600;
  letter-spacing:.3em;text-transform:uppercase;color:var(--gold);
}
.eyebrow::before{content:"";width:34px;height:2px;background:var(--gold)}
.eyebrow--vertical{
  writing-mode:vertical-rl;text-orientation:mixed;
  transform:rotate(180deg);
  letter-spacing:.42em;
  border-left:0;
}
.eyebrow--vertical::before{width:2px;height:34px}

/* ===== 容器与网格 ===== */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(48px,7vw,96px)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:clamp(24px,3.5vw,44px)}
.section-head > *{min-width:0}
.band{position:relative;padding-block:clamp(44px,6vw,84px)}
.band--panel{background:var(--panel);border-top:2px solid var(--line);border-bottom:2px solid var(--line)}
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--asym{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);align-items:start}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:44px;padding:11px 22px;
  font-size:14px;font-weight:800;letter-spacing:.04em;
  border:2px solid var(--gold);
  background:transparent;color:var(--gold);
  box-shadow:4px 4px 0 rgba(122,90,22,.45);
  transition:background .2s ease,color .2s ease,transform .16s ease,box-shadow .16s ease;
}
.btn:hover,.btn:focus-visible{background:var(--gold);color:var(--ink)}
.btn:active{transform:translate(3px,3px);box-shadow:1px 1px 0 rgba(122,90,22,.45)}
.btn--gold{background:var(--gold);color:var(--ink);border-color:var(--gold)}
.btn--gold:hover,.btn--gold:focus-visible{background:#f3c558;color:var(--ink)}
.btn--ghost{background:transparent;color:var(--white);border-color:var(--gold)}
.btn--ghost:hover,.btn--ghost:focus-visible{background:var(--gold);color:var(--ink)}
.btn--sm{min-height:38px;padding:7px 14px;font-size:12px;box-shadow:none}

/* ===== 头部 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.site-header[data-scrolled="true"]{
  background:rgba(10,18,32,.97);
  border-bottom-color:var(--line);
  box-shadow:0 10px 26px rgba(0,0,0,.42);
}
.header-progress{position:absolute;left:0;right:0;bottom:0;height:2px;overflow:hidden;pointer-events:none}
.header-progress__bar{
  display:block;height:100%;width:100%;
  background:linear-gradient(90deg,var(--gold),var(--cyan));
  transform:scaleX(0);transform-origin:0 50%;
}
.header-inner{
  display:flex;align-items:center;gap:18px;
  width:100%;max-width:var(--maxw);
  margin-inline:auto;padding-inline:var(--gutter);
  height:84px;
  transition:height .28s ease;
}
.site-header[data-scrolled="true"] .header-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{
  position:relative;width:26px;height:26px;flex:0 0 auto;
  border:2px solid var(--gold);
  box-shadow:3px 3px 0 var(--gold-deep);
}
.brand__mark::before{
  content:"";position:absolute;left:5px;right:5px;top:5px;bottom:5px;
  border-top:2px solid var(--gold);border-bottom:2px solid var(--gold);
}
.brand__name{font-size:19px;font-weight:900;letter-spacing:.02em;line-height:1}
.brand__tag{
  font-family:var(--mono);font-size:10px;font-weight:600;
  letter-spacing:.18em;color:var(--gold);
  border:1px solid var(--gold);padding:3px 6px;line-height:1;
  white-space:nowrap;
}
.primary-nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:clamp(14px,2vw,28px)}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 2px;font-size:14px;font-weight:700;letter-spacing:.05em;
  color:var(--white);transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--gold);transform:scaleX(0);transform-origin:0 50%;
  transition:transform .22s ease;
}
.nav-link:hover,.nav-link:focus-visible{color:var(--gold)}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--gold)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.nav-foot{display:none}
.header-cta{margin-left:8px;flex:0 0 auto}
.nav-toggle{
  display:none;align-items:center;gap:8px;
  margin-left:auto;
  min-height:44px;min-width:44px;padding:8px 12px;
  border:2px solid var(--line);color:var(--white);
  font-size:12px;font-weight:700;letter-spacing:.14em;
}
.nav-toggle__bars{display:flex;flex-direction:column;justify-content:space-between;width:18px;height:13px}
.nav-toggle__bars span{display:block;height:2px;background:var(--gold)}
.nav-toggle[aria-expanded="true"]{border-color:var(--gold);color:var(--gold)}
.nav-toggle__label{font-family:var(--mono);font-size:10px;letter-spacing:.2em}

/* ===== 页脚 ===== */
.site-footer{
  position:relative;
  background:var(--panel);
  border-top:2px solid var(--gold);
  color:var(--white);
  margin-top:clamp(48px,7vw,96px);
}
.footer-inner{
  width:100%;max-width:var(--maxw);
  margin-inline:auto;padding:clamp(40px,5.5vw,68px) var(--gutter) 28px;
}
.footer-grid{display:grid;grid-template-columns:1.3fr .8fr 1.2fr .8fr;gap:clamp(24px,3.4vw,48px)}
.footer-col{min-width:0}
.footer-brand{
  display:inline-block;font-size:22px;font-weight:900;letter-spacing:.02em;
  padding-bottom:6px;border-bottom:2px solid var(--gold);
}
.footer-tagline{margin-top:14px;max-width:34ch;font-size:14px;line-height:1.8;color:var(--gray)}
.footer-badge{
  display:inline-block;margin-top:16px;
  font-family:var(--mono);font-size:10px;letter-spacing:.16em;
  color:var(--gold);border:1px solid var(--gold);padding:4px 8px;line-height:1;
}
.footer-title{
  font-family:var(--mono);font-size:11px;font-weight:700;
  letter-spacing:.26em;text-transform:uppercase;color:var(--gray);
  padding-bottom:12px;margin-bottom:14px;border-bottom:1px solid var(--line);
}
.footer-links li + li{margin-top:9px}
.footer-links a{font-size:14px;color:var(--white);transition:color .18s ease}
.footer-links a:hover,.footer-links a:focus-visible{color:var(--gold)}
.footer-contact li{display:flex;flex-direction:column;gap:2px}
.footer-contact li + li{margin-top:12px}
.footer-label{font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--gray)}
.footer-value{font-size:14px;line-height:1.6;word-break:break-word}
.footer-note{margin-top:16px;font-size:12px;line-height:1.75;color:var(--gray);max-width:34ch}
.footer-icp{
  margin-top:18px;font-family:var(--mono);font-size:11px;letter-spacing:.1em;
  color:var(--gray);border-left:2px solid var(--line);padding-left:10px;
}
.footer-scale{position:relative;display:flex;flex-direction:column;gap:8px;margin-top:clamp(32px,4vw,52px)}
.footer-scale__line{
  display:block;height:8px;
  background:
    repeating-linear-gradient(90deg,var(--line) 0 1px,transparent 1px 22px),
    linear-gradient(90deg,rgba(232,178,58,.5),rgba(53,224,208,.32));
  background-size:auto 8px,auto 2px;
  background-position:0 0,0 0;
  background-repeat:repeat-x,no-repeat;
  opacity:.9;
}
.footer-scale__marks{
  font-family:var(--mono);font-size:10px;letter-spacing:.32em;color:var(--gray);
  overflow:hidden;white-space:nowrap;text-overflow:ellipsis;
}
.footer-base{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
}
.footer-copy{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--gray)}
.footer-meta{font-size:11px;letter-spacing:.08em;color:var(--gray)}

/* ===== 面包屑 ===== */
.breadcrumb{margin-bottom:22px}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--gray)}
.breadcrumb__item + .breadcrumb__item::before{content:"/";color:var(--line)}
.breadcrumb__link{color:var(--gray);transition:color .18s ease}
.breadcrumb__link:hover,.breadcrumb__link:focus-visible{color:var(--gold)}
.breadcrumb__item[aria-current="page"]{color:var(--white)}

/* ===== 面板 / 数据块 ===== */
.panel{
  background:var(--panel);
  border:2px solid var(--line);
  box-shadow:var(--hard);
  padding:clamp(18px,2.6vw,30px);
  min-width:0;
}
.panel:hover{border-color:var(--gold);transition:border-color .22s ease}
.stat{display:flex;flex-direction:column;gap:6px}
.stat__value{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:clamp(34px,4.6vw,56px);line-height:1;font-weight:700;
  letter-spacing:.02em;color:var(--gold);
}
.stat__label{font-size:12px;letter-spacing:.14em;color:var(--gray)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--mono);font-size:10px;font-weight:700;
  letter-spacing:.16em;line-height:1;
  padding:5px 8px;border:1px solid currentColor;
}
.tag--gold{color:var(--gold)}
.tag--red{color:var(--red)}
.tag--yellow{color:var(--yellow)}
.tag--cyan{color:var(--cyan)}
.tag--gray{color:var(--gray)}

/* ===== 表格 ===== */
.table-wrap{width:100%;overflow-x:auto;border:2px solid var(--line);box-shadow:var(--hard);background:var(--panel)}
.data-table{min-width:560px;font-size:14px}
.data-table caption{
  caption-side:top;text-align:left;padding:12px 14px;
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--gray);
  border-bottom:1px solid var(--line);
}
.data-table th{
  font-family:var(--mono);font-size:11px;font-weight:700;
  letter-spacing:.18em;text-align:left;white-space:nowrap;
  color:var(--gray);padding:12px 14px;border-bottom:2px solid var(--line);
}
.data-table td{padding:11px 14px;border-bottom:1px solid rgba(30,51,80,.7)}
.data-table tbody tr{transition:background .2s ease}
.data-table tbody tr:hover{background:rgba(232,178,58,.06)}
.data-table tbody tr:hover td{border-bottom-color:var(--gold)}
.data-table tbody tr:last-child td{border-bottom:0}

/* ===== 时间轴 ===== */
.timeline{position:relative;padding-left:28px}
.timeline::before{
  content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--gold),var(--line));
}
.timeline__item{position:relative;padding-bottom:clamp(20px,2.6vw,32px)}
.timeline__item:last-child{padding-bottom:0}
.timeline__marker{
  position:absolute;left:-27px;top:7px;width:12px;height:12px;
  background:var(--ink);border:2px solid var(--gold);
}
.timeline__body{font-size:14px;color:var(--gray);line-height:1.8}
.timeline__body strong{display:block;color:var(--white);font-size:16px;font-weight:800;letter-spacing:.01em;margin-bottom:4px}

/* ===== 图文容器 ===== */
.figure{margin:0;min-width:0}
.figure__frame{
  position:relative;display:grid;place-items:center;
  aspect-ratio:16/9;overflow:hidden;
  border:2px solid var(--line);
  box-shadow:var(--hard);
  background:
    radial-gradient(circle at 72% 22%,rgba(232,178,58,.18),transparent 58%),
    repeating-linear-gradient(90deg,transparent 0 46px,rgba(53,224,208,.13) 46px 48px),
    repeating-linear-gradient(0deg,transparent 0 46px,rgba(30,51,80,.55) 46px 48px),
    var(--panel);
}
.figure__frame > img,
.figure__frame > svg{width:100%;height:100%;object-fit:cover;display:block}
.figure__caption{
  margin-top:10px;font-family:var(--mono);font-size:11px;
  letter-spacing:.12em;color:var(--gray);
}
.figure--wide .figure__frame{aspect-ratio:21/9}
.figure--tall .figure__frame{aspect-ratio:4/5}

/* ===== 正文 ===== */
.prose{max-width:68ch}
.prose p + p{margin-top:1em}
.prose h2,.prose h3{margin-top:1.6em;margin-bottom:.5em;line-height:1.3}
.prose ul,.prose ol{list-style:disc;padding-left:1.2em}
.prose li + li{margin-top:.4em}

/* ===== 滚动显现 ===== */
@media (prefers-reduced-motion:no-preference){
  html.js [data-reveal]{
    opacity:0;transform:translateY(24px);
    transition:opacity .6s ease,transform .6s ease;
    transition-delay:var(--reveal-delay,0ms);
    will-change:opacity,transform;
  }
  html.js [data-reveal].is-revealed{opacity:1;transform:none}
}

/* ===== 响应式 ===== */
@media (max-width:1100px){
  .nav-list{gap:16px}
  .nav-link{font-size:13px}
  .footer-grid{grid-template-columns:1.2fr 1fr 1fr;gap:28px}
  .footer-col--brand{grid-column:1 / -1}
}
@media (max-width:960px){
  .header-inner{height:76px}
  .site-header[data-scrolled="true"] .header-inner{height:64px}
  .header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .primary-nav{
    position:fixed;inset:0;z-index:80;
    display:flex;flex-direction:column;
    margin:0;padding:100px var(--gutter) 40px;
    background:var(--ink);
    border-right:2px solid var(--line);
    overflow-y:auto;
    transform:translateX(100%);opacity:0;visibility:hidden;
    transition:transform .3s ease,opacity .3s ease,visibility .3s;
  }
  .primary-nav[data-open="true"]{transform:none;opacity:1;visibility:visible}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;width:100%}
  .nav-item{border-bottom:1px solid var(--line)}
  .nav-item:first-child{border-top:1px solid var(--line)}
  .nav-link{display:block;padding:16px 2px;font-size:19px;font-weight:800;letter-spacing:.04em}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{box-shadow:inset 3px 0 0 var(--gold);padding-left:14px}
  .nav-foot{
    display:flex;flex-direction:column;align-items:flex-start;gap:14px;
    margin-top:32px;padding-top:24px;border-top:1px solid var(--line);
  }
  .nav-foot__link{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--gray)}
  .nav-foot__link--accent{color:var(--gold);border:2px solid var(--gold);padding:10px 16px;min-height:44px;display:inline-flex;align-items:center}
  body.is-nav-open{overflow:hidden}
  .grid--2,.grid--3,.grid--asym{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-col--brand{grid-column:1 / -1}
}
@media (max-width:600px){
  :root{--header-h:76px}
  .brand__tag{display:none}
  .brand__name{font-size:17px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-base{flex-direction:column;align-items:flex-start}
  .footer-scale__marks{letter-spacing:.2em}
  .panel{box-shadow:4px 4px 0 rgba(30,51,80,.95)}
}
@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;transform:none}
}