/* ============ 设计变量 ============ */
:root{
  --clay:#B23A1E;
  --clay-deep:#7C2412;
  --midnight:#0E1730;
  --midnight-2:#1D2A4D;
  --paper:#F4EDE2;
  --paper-2:#E3D8C7;
  --neon:#29E0C4;
  --amber:#E8A33D;
  --ink:#14100C;
  --stone:#6B6558;

  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --wrap:1280px;
  --gutter:clamp(16px,4vw,44px);
  --cut:18px;
  --rail:220px;
  --section-pad:clamp(48px,7vw,96px);

  --line:rgba(20,16,12,.14);
  --line-soft:rgba(20,16,12,.08);
  --line-light:rgba(244,237,226,.16);
  --nav-break:1140px;
}

/* ============ reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding:0;
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background-color:var(--paper);
  background-image:
    radial-gradient(120% 70% at 6% -12%,rgba(178,58,30,.08),transparent 60%),
    radial-gradient(90% 60% at 104% 0%,rgba(14,23,48,.08),transparent 55%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--clay);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--clay-deep)}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
h1,h2,h3,h4,h5{margin:0 0 .55em;font-family:var(--font-display);font-weight:900;letter-spacing:-.02em;line-height:1.25}
h1{font-size:clamp(32px,5vw,64px)}
h2{font-size:clamp(28px,4vw,40px)}
h3{font-size:21px}
h4{font-size:17px}
strong{font-weight:700}
table{border-collapse:collapse;width:100%}
[id]{scroll-margin-top:130px}
:focus-visible{outline:3px solid var(--neon);outline-offset:3px}

/* ============ 通用工具 ============ */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.cut{clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut))}
.skew{display:inline-block;transform:skewX(-2deg)}
.divider-slash{height:2px;margin:clamp(24px,4vw,48px) 0;border:0;background:linear-gradient(90deg,var(--clay) 0%,rgba(178,58,30,.18) 42%,rgba(20,16,12,0) 100%);transform:skewY(-0.6deg);transform-origin:left center}

/* ============ 跳转链接 ============ */
.skip-link{
  position:absolute;left:12px;top:-72px;z-index:200;
  display:inline-block;padding:11px 20px;
  background:var(--midnight);color:var(--paper);
  font-family:var(--font-mono);font-size:13px;letter-spacing:.08em;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
  transition:top .2s ease-out;
}
.skip-link:focus,.skip-link:focus-visible{top:12px;color:var(--paper)}

/* ============ 头部：框架式导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--paper);
  border-bottom:3px solid var(--paper-2);
}
.header-ticker{
  background:var(--midnight);color:var(--paper);
  max-height:44px;overflow:hidden;
  transition:max-height .28s ease-out,opacity .24s ease-out;
}
.site-header.is-condensed .header-ticker{max-height:0;opacity:0}
.ticker-inner{
  display:flex;align-items:center;gap:14px;
  height:34px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  white-space:nowrap;overflow-x:auto;scrollbar-width:none;
}
.ticker-inner::-webkit-scrollbar{display:none}
.ticker-live{
  flex:0 0 auto;width:7px;height:7px;border-radius:50%;
  background:var(--neon);box-shadow:0 0 0 0 rgba(41,224,196,.65);
  animation:ticker-pulse 1.6s ease-in-out infinite;
}
@keyframes ticker-pulse{
  0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(41,224,196,.55)}
  50%{opacity:.45;box-shadow:0 0 0 7px rgba(41,224,196,0)}
}
.ticker-label{flex:0 0 auto;color:var(--neon)}
.ticker-list{display:flex;align-items:center;gap:18px;flex:0 0 auto}
.ticker-item{display:inline-flex;align-items:center;gap:7px;color:rgba(244,237,226,.78)}
.ticker-item+.ticker-item::before{content:"｜";margin-right:12px;color:rgba(244,237,226,.28)}
.ticker-value{color:var(--amber)}

.header-frame{position:relative}
.header-frame-inner{
  display:flex;align-items:center;gap:clamp(12px,1.8vw,26px);
  min-height:78px;padding-top:10px;padding-bottom:10px;
}

.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  flex:0 0 auto;width:34px;height:34px;
  background:linear-gradient(135deg,var(--clay) 0%,var(--clay-deep) 58%,var(--midnight) 100%);
  clip-path:polygon(0 0,100% 0,100% 62%,62% 100%,0 100%);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;left:7px;right:7px;bottom:9px;height:3px;
  background:var(--neon);transform:skewX(-12deg);
}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-signature{font-family:var(--font-display);font-weight:900;font-size:21px;letter-spacing:-.02em}
.brand-note{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--stone)}
.brand-tagline{
  margin:0;padding-left:14px;border-left:1px solid var(--line);
  font-size:13px;color:var(--stone);flex:0 0 auto;
}

.nav-toggle{
  display:none;margin-left:auto;
  position:relative;width:46px;height:46px;
  background:var(--midnight);color:var(--paper);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
}
.nav-toggle-bars{
  position:absolute;left:50%;top:50%;width:20px;height:2px;
  background:currentColor;transform:translate(-50%,-50%);
  transition:background-color .2s ease;
}
.nav-toggle-bars::before,.nav-toggle-bars::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:currentColor;
  transition:transform .22s ease-out;
}
.nav-toggle-bars::before{top:-6px}
.nav-toggle-bars::after{top:6px}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{transform:translateY(-6px) rotate(-45deg)}

.site-nav{margin-left:auto;display:flex;align-items:center;gap:clamp(10px,1.5vw,24px)}
.nav-list{display:flex;align-items:baseline;gap:clamp(8px,1.2vw,18px);counter-reset:nav}
.nav-item{display:flex;align-items:baseline;gap:6px}
.nav-item::before{
  counter-increment:nav;
  content:counter(nav,decimal-leading-zero);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--stone);
}
.nav-link{
  font-size:15px;font-weight:500;color:var(--ink);
  padding:6px 2px;border-bottom:2px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.nav-link:hover{color:var(--clay);border-bottom-color:var(--clay)}
.nav-link[aria-current="page"]{color:var(--clay);border-bottom-color:var(--clay);font-weight:700}

.nav-quick{display:flex;align-items:center;gap:8px;padding-left:clamp(10px,1.4vw,20px);border-left:1px solid var(--line)}
.nav-quick>li{display:flex}
.quick-link{
  display:inline-block;padding:8px 14px;font-size:14px;font-weight:500;
  color:var(--ink);background:var(--paper-2);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
  transition:background-color .2s ease,color .2s ease;
}
.quick-link:hover{background:var(--midnight);color:var(--paper)}
.quick-link--cta{background:var(--clay);color:var(--paper)}
.quick-link--cta:hover{background:var(--clay-deep);color:var(--paper)}

.reading-progress{position:absolute;left:0;right:0;bottom:0;height:3px;background:rgba(20,16,12,.1)}
.reading-bar{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--clay) 0%,var(--amber) 62%,var(--neon) 100%)}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;margin-top:clamp(48px,7vw,96px);
  padding-top:clamp(56px,7vw,88px);padding-bottom:clamp(24px,3vw,40px);
  background-color:var(--midnight);color:var(--paper);
  clip-path:polygon(0 3rem,100% 0,100% 100%,0 100%);
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(60% 55% at 12% 118%,rgba(41,224,196,.16),transparent 62%),
    radial-gradient(48% 46% at 92% -12%,rgba(232,163,61,.14),transparent 58%),
    radial-gradient(70% 60% at 50% 130%,rgba(178,58,30,.2),transparent 66%);
}
.footer-edge{
  position:absolute;top:0;left:0;right:0;height:5px;
  background:linear-gradient(90deg,var(--clay) 0 32%,var(--amber) 32% 56%,var(--neon) 56% 76%,var(--midnight-2) 76% 100%);
}
.footer-grid{
  position:relative;
  display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:clamp(28px,4vw,64px);
  padding-bottom:clamp(28px,4vw,48px);
}
.footer-logo{
  margin:0 0 6px;font-family:var(--font-display);font-weight:900;
  font-size:26px;letter-spacing:-.02em;color:var(--paper);
}
.footer-tagline{margin:0 0 14px;font-family:var(--font-mono);font-size:13px;letter-spacing:.1em;color:var(--neon)}
.footer-note{margin:0 0 16px;max-width:34ch;font-size:15px;line-height:1.8;color:rgba(244,237,226,.72)}
.footer-stamp{
  display:inline-block;margin:0;padding:6px 12px;
  font-size:12px;letter-spacing:.08em;color:var(--amber);
  border:1px solid rgba(232,163,61,.4);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
}
.footer-cols{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(18px,2.4vw,32px)}
.footer-col-title{
  margin:0 0 14px;font-family:var(--font-mono);font-weight:500;
  font-size:12px;letter-spacing:.12em;color:var(--stone);
}
.site-footer .footer-col-title{color:rgba(244,237,226,.52)}
.footer-list{display:grid;gap:9px}
.footer-item{line-height:1.6}
.footer-link{font-size:15px;color:rgba(244,237,226,.8)}
.footer-link:hover{color:var(--neon)}
.footer-contact{position:relative;padding-top:clamp(24px,3vw,36px);padding-bottom:clamp(24px,3vw,36px);border-top:1px solid var(--line-light)}
.contact-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(16px,2.4vw,32px)}
.contact-item{display:flex;flex-direction:column;gap:6px}
.contact-label{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--stone)}
.site-footer .contact-label{color:rgba(244,237,226,.5)}
.contact-value{font-size:15px;line-height:1.7;color:rgba(244,237,226,.88);word-break:break-word}
.footer-bottom{
  position:relative;
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 26px;
  padding-top:clamp(18px,2.4vw,26px);
  border-top:1px solid var(--line-light);
  font-size:12px;letter-spacing:.08em;
}
.footer-icp{margin:0;color:rgba(244,237,226,.6)}
.footer-copy{margin:0;color:rgba(244,237,226,.6)}
.footer-closing{margin:0;margin-left:auto;color:var(--amber)}

/* ============ 按钮 ============ */
.btn{
  position:relative;isolation:isolate;
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 24px;
  font-family:var(--font-mono);font-size:13px;font-weight:500;letter-spacing:.08em;
  color:var(--paper);
  transition:color .2s ease;
}
.btn::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:var(--btn-bg,var(--clay));
  clip-path:polygon(0 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
  transition:background-color .2s ease;
}
.btn--primary{--btn-bg:var(--clay);color:var(--paper)}
.btn--primary:hover{--btn-bg:var(--clay-deep);color:var(--paper)}
.btn--amber{--btn-bg:var(--amber);color:var(--midnight)}
.btn--amber:hover{--btn-bg:#C9862A;color:var(--midnight)}
.btn--dark{--btn-bg:var(--midnight);color:var(--paper)}
.btn--dark:hover{--btn-bg:var(--midnight-2);color:var(--neon)}
.btn--ghost{--btn-bg:transparent;color:var(--ink);box-shadow:inset 0 0 0 1px var(--line)}
.btn--ghost::before{background:transparent}
.btn--ghost:hover{--btn-bg:var(--clay);color:var(--paper);box-shadow:none}

/* ============ 面包屑 ============ */
.breadcrumb{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--stone)}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.breadcrumb-item{display:flex;align-items:center;gap:10px;color:var(--stone)}
.breadcrumb-item+.breadcrumb-item::before{content:"/";color:rgba(107,101,88,.55)}
.breadcrumb-item[aria-current="page"]{color:var(--ink)}
.breadcrumb-link{color:var(--stone)}
.breadcrumb-link:hover{color:var(--clay)}

/* ============ 正文 ============ */
.prose{max-width:68ch;font-size:17px;line-height:1.85}
.prose h2{margin-top:1.6em;font-size:clamp(24px,3vw,32px)}
.prose h3{margin-top:1.4em}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.2em;list-style:disc}
.prose li{margin-bottom:.4em}
.prose strong{color:var(--clay-deep)}

/* ============ 栅格与分屏 ============ */
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2.2vw,32px)}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-9{grid-column:span 9}
.span-10{grid-column:span 10}
.span-12{grid-column:span 12}
.split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(20px,3vw,56px);align-items:start}
.split--wide{grid-template-columns:minmax(0,4fr) minmax(0,8fr)}

/* ============ 索引骨架 ============ */
.page-shell{
  display:grid;grid-template-columns:var(--rail) minmax(0,1fr);
  gap:clamp(20px,3vw,48px);align-items:start;
}
.rail{position:sticky;top:132px}
.rail-inner{padding-top:6px}
.rail-title{
  margin:0 0 14px;font-family:var(--font-mono);font-weight:500;
  font-size:11px;letter-spacing:.14em;color:var(--stone);
}
.rail-list{display:grid;gap:2px}
.rail-link{
  display:block;padding:8px 0 8px 14px;
  border-left:2px solid var(--line-soft);
  font-size:14px;line-height:1.5;color:var(--stone);
  transition:color .2s ease,border-color .2s ease;
}
.rail-link:hover{color:var(--clay);border-left-color:var(--clay)}
.rail-link[aria-current="true"]{color:var(--clay);border-left-color:var(--clay);font-weight:700}

/* ============ 章节 ============ */
.section{position:relative;padding-block:var(--section-pad)}
.section--paper2{background:var(--paper-2)}
.section--dark{
  background-color:var(--midnight);color:var(--paper);
  background-image:
    radial-gradient(60% 55% at 14% 112%,rgba(41,224,196,.16),transparent 62%),
    radial-gradient(50% 48% at 88% -10%,rgba(232,163,61,.14),transparent 58%),
    repeating-radial-gradient(circle at 20% 120%,rgba(41,224,196,.05) 0 1px,transparent 1px 46px);
}
.section--dark a{color:var(--neon)}
.section--dark a:hover{color:var(--paper)}
.section--slant{
  background:var(--paper-2);
  clip-path:polygon(0 3.2rem,100% 0,100% 100%,0 100%);
  padding-top:calc(var(--section-pad) + 2.6rem);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  color:var(--clay);
}
.section--dark .eyebrow{color:var(--amber)}
.section-anchor{
  display:inline-block;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--stone);
}
.section--dark .section-anchor{color:rgba(244,237,226,.5)}
.section-title{margin:0 0 .5em;font-size:clamp(28px,4vw,40px);letter-spacing:-.02em}
.section-lead{max-width:62ch;margin:0 0 1.4em;font-size:18px;line-height:1.85;color:var(--stone)}
.section--dark .section-lead{color:rgba(244,237,226,.78)}

/* ============ 面板与数据 ============ */
.panel{padding:clamp(18px,2.4vw,32px);background:var(--paper-2)}
.panel--cut{
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
}
.panel--dark{background:var(--midnight-2);color:var(--paper)}
.stat-list{display:flex;flex-wrap:wrap;gap:clamp(18px,3vw,48px)}
.stat{display:flex;flex-direction:column;gap:4px}
.stat-value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:clamp(22px,3vw,28px);letter-spacing:-.01em;color:var(--clay)}
.section--dark .stat-value{color:var(--neon)}
.stat-label{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--stone)}
.section--dark .stat-label{color:rgba(244,237,226,.6)}

/* ============ 标签 ============ */
.tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  background:var(--paper-2);color:var(--ink);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%);
}
.tag--live{background:rgba(41,224,196,.2);color:#0B6558}
.tag--amber{background:rgba(232,163,61,.24);color:#7A4C06}
.section--dark .tag{background:rgba(244,237,226,.1);color:var(--paper)}
.section--dark .tag--live{background:rgba(41,224,196,.14);color:var(--neon)}
.section--dark .tag--amber{background:rgba(232,163,61,.16);color:var(--amber)}

/* ============ 目录 ============ */
.toc{position:relative}
.toc-list{display:grid;gap:2px}
.toc-link{
  display:block;padding:7px 0 7px 14px;
  border-left:2px solid var(--line-soft);
  font-size:14px;line-height:1.5;color:var(--stone);
  transition:color .2s ease,border-color .2s ease;
}
.toc-link:hover{color:var(--clay);border-left-color:var(--clay)}
.toc-link[aria-current="true"]{color:var(--clay);border-left-color:var(--clay);font-weight:700}
.section--dark .toc-link{color:rgba(244,237,226,.7);border-left-color:rgba(244,237,226,.18)}
.section--dark .toc-link:hover,.section--dark .toc-link[aria-current="true"]{color:var(--neon);border-left-color:var(--neon)}

/* ============ 图片容器 ============ */
.media-frame{
  position:relative;display:block;overflow:hidden;
  background:var(--midnight);
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
}
.media-frame__inner{position:relative;display:block;aspect-ratio:16/9;background:var(--midnight-2);overflow:hidden}
.media-frame__inner::before{
  content:"";position:absolute;inset:-12%;pointer-events:none;
  background-image:
    radial-gradient(58% 58% at 26% 104%,rgba(41,224,196,.3),transparent 68%),
    radial-gradient(48% 48% at 84% 4%,rgba(232,163,61,.22),transparent 62%),
    repeating-linear-gradient(112deg,rgba(244,237,226,.07) 0 1px,transparent 1px 16px);
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame__placeholder{
  position:absolute;inset:0;display:grid;place-items:center;
  padding:18px;text-align:center;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;line-height:1.8;
  color:rgba(244,237,226,.62);
}
.media-frame__caption{
  margin-top:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--stone);
}
.section--dark .media-frame__caption{color:rgba(244,237,226,.6)}
.media-frame--wide .media-frame__inner{aspect-ratio:21/9}
.media-frame--portrait .media-frame__inner{aspect-ratio:3/4}

/* ============ 入场 ============ */
.js [data-reveal]{
  opacity:0;transform:translateY(24px);
  transition:opacity .5s ease-out,transform .5s ease-out;
  transition-delay:var(--reveal-delay,0s);
  will-change:opacity,transform;
}
.js [data-reveal].is-visible{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1360px){
  .brand-tagline{display:none}
}
@media (max-width:1240px){
  .nav-link{font-size:14px}
  .nav-item::before{display:none}
  .quick-link{padding:7px 11px;font-size:13px}
  .nav-quick{gap:6px;padding-left:12px}
}
@media (max-width:1140px){
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;top:100%;left:0;right:0;
    margin:0;display:block;
    padding:0 var(--gutter);
    background:var(--midnight);color:var(--paper);
    max-height:0;opacity:0;visibility:hidden;overflow:hidden;
    transition:max-height .3s ease-out,opacity .22s ease-out,visibility .22s ease-out,padding .22s ease-out;
    box-shadow:0 24px 40px -30px rgba(14,23,48,.85);
  }
  .site-nav[data-open="true"]{
    max-height:min(78vh,640px);
    padding-top:16px;padding-bottom:24px;
    opacity:1;visibility:visible;overflow-y:auto;
  }
  .nav-list{display:grid;gap:0;counter-reset:nav}
  .nav-item{display:flex;align-items:baseline;gap:12px;border-bottom:1px solid rgba(244,237,226,.12)}
  .nav-item::before{display:inline;color:rgba(232,163,61,.75);font-size:12px}
  .nav-link{
    flex:1;padding:14px 0;font-size:17px;font-weight:500;
    color:rgba(244,237,226,.88);border-bottom:0;
  }
  .nav-link:hover,.nav-link[aria-current="page"]{color:var(--neon);border-bottom-color:transparent}
  .nav-link[aria-current="page"]::after{content:"· 当前";margin-left:10px;font-family:var(--font-mono);font-size:11px;color:var(--neon)}
  .nav-quick{
    margin-top:20px;padding:0;border-left:0;
    display:flex;flex-wrap:wrap;gap:10px;
  }
  .quick-link{background:rgba(244,237,226,.12);color:var(--paper);padding:10px 16px}
  .quick-link:hover{background:var(--neon);color:var(--midnight)}
  .quick-link--cta{background:var(--clay);color:var(--paper)}
  .quick-link--cta:hover{background:var(--clay-deep);color:var(--paper)}
}
@media (max-width:960px){
  body{font-size:16px}
  .page-shell{grid-template-columns:minmax(0,1fr)}
  .rail{position:static;padding-bottom:6px}
  .split,.split--wide{grid-template-columns:minmax(0,1fr);gap:28px}
  .span-3,.span-4,.span-5{grid-column:span 6}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .contact-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-closing{margin-left:0}
}
@media (max-width:720px){
  .ticker-item:nth-child(n+3){display:none}
  .header-frame-inner{min-height:66px}
  .brand-mark{width:30px;height:30px}
  .brand-signature{font-size:19px}
  .span-6,.span-7,.span-8{grid-column:span 12}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:560px){
  .contact-list{grid-template-columns:minmax(0,1fr)}
  .footer-cols{gap:22px}
  .nav-quick{flex-direction:column;align-items:stretch}
  .quick-link{text-align:center}
}

/* ============ 减少动效 ============ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .ticker-live{animation:none;opacity:1}
  .js [data-reveal]{opacity:1;transform:none;transition:none}
  .site-header.is-condensed .header-ticker{transition:none}
}