/* =========================================================
   亚新体育 · 全站共享样式 /assets/site.css
   基调：暗夜绿底 + 荧光青柠数据高亮 + 熔岩橙变动标记
   ========================================================= */

/* ---------- 01 变量 ---------- */
:root{
  --night-950:#0A1310;
  --night-800:#12201A;
  --moss-700:#1E3027;
  --stone-500:#3D5648;
  --stone-300:#9FADA2;
  --bone-100:#EFEBDD;
  --lime-400:#C6FF4D;
  --lava-500:#FF6A2B;
  --clay-400:#B67C4E;

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

  --max:1280px;
  --gutter:clamp(20px,4vw,56px);
  --radius:14px;
  --radius-lg:18px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 02 reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:104px}
body,h1,h2,h3,h4,h5,p,ul,ol,dl,dd,dt,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
[hidden]{display:none !important}

/* ---------- 03 基础排版 ---------- */
body{
  min-height:100vh;
  background-color:var(--night-950);
  background-image:
    radial-gradient(1100px 560px at 88% -12%,rgba(30,48,39,.62),transparent 68%),
    radial-gradient(860px 520px at -8% 18%,rgba(61,86,72,.26),transparent 70%);
  color:var(--bone-100);
  font-family:var(--font-body);
  font-size:1rem;
  line-height:1.75;
  letter-spacing:.008em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4,h5{
  font-family:var(--font-title);
  font-weight:900;
  line-height:1.04;
  letter-spacing:-.02em;
}
h1{font-size:clamp(2.75rem,6.4vw,6rem)}
h2{font-size:clamp(1.75rem,3.4vw,2.75rem)}
h3{font-size:clamp(1.25rem,2vw,1.65rem);line-height:1.16}
h4{font-size:1.0625rem;line-height:1.3;letter-spacing:.01em}

p{text-wrap:pretty}
strong{font-weight:700;color:var(--bone-100)}

::selection{background:var(--lime-400);color:var(--night-950)}

:focus-visible{
  outline:2px solid var(--lime-400);
  outline-offset:3px;
  border-radius:3px;
}

/* ---------- 04 跳转链接 ---------- */
.skip-link{
  position:fixed;
  left:var(--gutter);
  top:-120px;
  z-index:300;
  padding:10px 20px;
  background:var(--lime-400);
  color:var(--night-950);
  font-weight:700;
  font-size:.9375rem;
  border-radius:0 0 10px 10px;
  transition:top .16s var(--ease);
}
.skip-link:focus{top:0}

#main-content{scroll-margin-top:110px}
.site-main{display:block}

/* ---------- 05 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:transparent;
  transition:background-color .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header[data-scrolled="true"]{
  background:rgba(10,19,16,.82);
  -webkit-backdrop-filter:blur(16px) saturate(1.25);
  backdrop-filter:blur(16px) saturate(1.25);
}

.scroll-meter{
  position:absolute;
  left:0;
  bottom:0;
  width:100%;
  height:2px;
  pointer-events:none;
}
.scroll-meter::after{
  content:"";
  display:block;
  width:100%;
  height:100%;
  background:var(--lime-400);
  transform:scaleX(var(--progress,0));
  transform-origin:left center;
  transition:transform .1s linear;
}

.header-shell{
  width:min(calc(100% - var(--gutter) * 2),var(--max));
  margin-inline:auto;
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:clamp(16px,3vw,48px);
  padding:18px 0 15px;
}

.brand-block{
  display:flex;
  flex-direction:column;
  gap:5px;
  min-width:0;
}
.brand-sign{
  display:inline-flex;
  align-items:baseline;
  gap:9px;
  font-family:var(--font-title);
  font-weight:900;
  font-size:clamp(1.35rem,2.2vw,1.75rem);
  line-height:1;
  letter-spacing:.06em;
  color:var(--bone-100);
  transition:color .18s var(--ease);
}
.brand-sign::after{
  content:"";
  width:9px;
  height:9px;
  background:var(--lime-400);
  clip-path:polygon(0 0,100% 0,100% 100%);
  transform:translateY(-2px);
}
.brand-sign:hover{color:var(--lime-400)}

.brand-tag{
  font-size:12px;
  line-height:1.5;
  letter-spacing:.06em;
  color:var(--stone-300);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.primary-nav{display:flex}
.nav-list{
  display:flex;
  align-items:center;
  gap:clamp(10px,1.7vw,28px);
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:6px 2px;
  font-size:.9375rem;
  font-weight:600;
  letter-spacing:.02em;
  color:var(--bone-100);
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--lime-400);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .18s var(--ease);
}
.nav-link:hover,
.nav-link:focus-visible{color:var(--lime-400)}
.nav-link:hover::after,
.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--lime-400)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}

.nav-foot{display:none}
.nav-foot__note{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--stone-300);
  margin-bottom:10px;
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:8px 15px;
  background:transparent;
  border:1px solid var(--stone-500);
  border-radius:999px;
  color:var(--bone-100);
  cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--lime-400);color:var(--lime-400)}
.nav-toggle-bars{
  position:relative;
  display:block;
  width:18px;
  height:2px;
  background:var(--lime-400);
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:var(--lime-400);
  transition:transform .18s var(--ease),opacity .18s var(--ease);
}
.nav-toggle-bars::before{top:-6px}
.nav-toggle-bars::after{top:6px}
[data-nav-toggle][aria-expanded="true"] .nav-toggle-bars{background:transparent}
[data-nav-toggle][aria-expanded="true"] .nav-toggle-bars::before{transform:translateY(6px) rotate(45deg)}
[data-nav-toggle][aria-expanded="true"] .nav-toggle-bars::after{transform:translateY(-6px) rotate(-45deg)}
.nav-toggle-label{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
}

.header-rule{
  height:1px;
  background:linear-gradient(90deg,transparent,var(--stone-500) 10%,var(--stone-500) 90%,transparent);
}

/* ---------- 06 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(64px,10vw,140px);
  background:var(--night-800);
  border-top:1px solid var(--stone-500);
}
.footer-shell{
  width:min(calc(100% - var(--gutter) * 2),var(--max));
  margin-inline:auto;
  padding:clamp(40px,6vw,72px) 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.5fr;
  gap:clamp(24px,4vw,56px);
  padding-bottom:clamp(32px,4vw,48px);
  border-bottom:1px solid rgba(61,86,72,.75);
}
.footer-col{min-width:0}
.footer-col--brand{max-width:34ch}

.footer-brand{
  font-family:var(--font-title);
  font-weight:900;
  font-size:1.6rem;
  line-height:1;
  letter-spacing:.06em;
  color:var(--bone-100);
}
.footer-note{
  margin-top:12px;
  font-size:.9375rem;
  line-height:1.7;
  color:var(--stone-300);
}
.footer-icp{
  margin-top:16px;
  padding-left:11px;
  border-left:2px solid var(--clay-400);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--clay-400);
}

.footer-title{
  margin-bottom:16px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--stone-300);
}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-link{
  position:relative;
  display:inline-block;
  font-size:.9375rem;
  color:var(--bone-100);
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-link::before{
  content:"";
  position:absolute;
  left:-14px;
  top:50%;
  width:7px;
  height:1px;
  background:var(--lime-400);
  opacity:0;
  transform:translateX(-4px);
  transition:opacity .18s var(--ease),transform .18s var(--ease);
}
.footer-link:hover,
.footer-link:focus-visible{color:var(--lime-400)}
.footer-link:hover::before,
.footer-link:focus-visible::before{opacity:1;transform:translateX(0)}

.footer-contact{display:flex;flex-direction:column;gap:14px}
.footer-contact__row{
  display:grid;
  grid-template-columns:5.5em 1fr;
  gap:10px;
  align-items:baseline;
}
.footer-contact dt{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--stone-300);
}
.footer-contact dd{
  font-size:.9375rem;
  line-height:1.7;
  color:var(--bone-100);
  word-break:break-word;
}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding-top:20px;
}
.footer-copy{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--stone-300);
}
.to-top{
  padding:8px 16px;
  background:transparent;
  border:1px solid var(--stone-500);
  border-radius:999px;
  color:var(--bone-100);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.to-top:hover{border-color:var(--lime-400);color:var(--lime-400)}

/* ---------- 07 布局容器 ---------- */
.container{
  width:min(calc(100% - var(--gutter) * 2),var(--max));
  margin-inline:auto;
}
.container--narrow{--max:920px}
.container--tight{--max:760px}

.grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2.2vw,32px);
}
.col-main{grid-column:span 8}
.col-side{grid-column:span 4}
.col-6{grid-column:span 6}
.col-12{grid-column:span 12}

.section{padding-block:clamp(48px,7vw,96px)}
.section + .section{padding-top:0}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--lime-400);
}
.eyebrow::before{
  content:"";
  width:24px;
  height:1px;
  background:var(--lime-400);
}
.section-title{margin-bottom:18px}
.lede{
  max-width:34em;
  font-size:clamp(1.0625rem,1.5vw,1.3rem);
  line-height:1.7;
  color:var(--bone-100);
}
.prose{
  max-width:40em;
  font-size:1.0625rem;
  line-height:1.75;
  color:var(--bone-100);
}
.prose p + p{margin-top:1em}
.prose h2{margin-top:1.4em}
.prose h3{margin-top:1.2em}
.prose ul{list-style:none;margin-top:.8em}
.prose li{position:relative;padding-left:18px;margin-top:.5em}
.prose li::before{
  content:"";
  position:absolute;
  left:0;top:.75em;
  width:8px;height:2px;
  background:var(--lime-400);
}
.hairline{
  height:1px;
  border:0;
  background:var(--stone-500);
  opacity:.7;
}

/* ---------- 08 面包屑 ---------- */
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:20px 0 0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--stone-300);
}
.breadcrumbs li{display:flex;align-items:center;gap:8px}
.breadcrumbs li + li::before{content:"/";color:var(--stone-500)}
.breadcrumbs a{transition:color .18s var(--ease)}
.breadcrumbs a:hover{color:var(--lime-400)}
.breadcrumbs [aria-current="page"]{color:var(--bone-100)}

/* ---------- 09 按钮 ---------- */
.btn{
  --btn-bg:var(--bone-100);
  --btn-fg:var(--night-950);
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 22px;
  border:1px solid transparent;
  border-radius:999px;
  background:var(--btn-bg);
  color:var(--btn-fg);
  font-size:.9375rem;
  font-weight:700;
  letter-spacing:.02em;
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),
             background-color .18s var(--ease),color .18s var(--ease),
             border-color .18s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn--lime{--btn-bg:var(--lime-400);--btn-fg:#0A1310}
.btn--lime:hover{box-shadow:0 0 0 2px rgba(198,255,77,.35)}
.btn--lava{--btn-bg:var(--lava-500);--btn-fg:#180A03}
.btn--ghost{
  background:transparent;
  color:var(--bone-100);
  border-color:var(--stone-500);
}
.btn--ghost:hover{
  border-color:var(--lime-400);
  color:var(--lime-400);
}
.btn--sm{padding:9px 16px;font-size:.8125rem}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* ---------- 10 标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border:1px solid var(--stone-500);
  border-radius:4px;
  background:rgba(61,86,72,.22);
  color:var(--stone-300);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  text-transform:uppercase;
  line-height:1.5;
  white-space:nowrap;
}
.tag--lime{
  background:var(--lime-400);
  border-color:var(--lime-400);
  color:var(--night-950);
  font-weight:600;
}
.tag--lava{
  background:var(--lava-500);
  border-color:var(--lava-500);
  color:#180A03;
  font-weight:600;
}
.tag--clay{
  background:rgba(182,124,78,.14);
  border-color:rgba(182,124,78,.65);
  color:var(--clay-400);
}

/* ---------- 11 档案卡 ---------- */
.card{
  position:relative;
  background:var(--moss-700);
  border:1px solid var(--stone-500);
  border-radius:var(--radius);
  padding:clamp(18px,2vw,26px);
  transition:transform .18s var(--ease),border-color .18s var(--ease),
             box-shadow .18s var(--ease),background-color .18s var(--ease);
}
.card:hover,
.card:focus-within{
  transform:translateY(-3px);
  border-color:var(--lime-400);
  box-shadow:0 0 0 1px var(--lime-400),0 14px 30px rgba(0,0,0,.42);
}
.card--lava{border-color:rgba(255,106,43,.55)}
.card--lava:hover{border-color:var(--lava-500);box-shadow:0 0 0 1px var(--lava-500),0 14px 30px rgba(0,0,0,.42)}
.card--clay{border-color:rgba(182,124,78,.5)}
.card--clay:hover{border-color:var(--clay-400);box-shadow:0 0 0 1px var(--clay-400),0 14px 30px rgba(0,0,0,.42)}

.card__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:14px;
}
.card__title{
  font-family:var(--font-title);
  font-weight:900;
  font-size:1.125rem;
  line-height:1.22;
  letter-spacing:-.01em;
  color:var(--bone-100);
}
.card__meta{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--stone-300);
  white-space:nowrap;
}
.card__body{
  font-size:.9375rem;
  line-height:1.7;
  color:var(--stone-300);
}
.card__foot{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:16px;
}

/* ---------- 12 数据与统计 ---------- */
.mono,.data-num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.data-num{
  font-size:1.4em;
  line-height:1;
  color:var(--lime-400);
}

.stat-row{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(170px,1fr));
  gap:1px;
  background:var(--stone-500);
  border:1px solid var(--stone-500);
  border-radius:var(--radius);
  overflow:hidden;
}
.stat{background:var(--night-800);padding:clamp(16px,2vw,22px)}
.stat__num{
  font-family:var(--font-mono);
  font-size:clamp(1.6rem,3vw,2.25rem);
  line-height:1;
  letter-spacing:-.01em;
  color:var(--lime-400);
}
.stat__label{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--stone-300);
}

/* ---------- 13 玻璃层（仅装饰） ---------- */
.glass{
  background:rgba(239,235,221,.05);
  border:1px solid rgba(159,173,162,.22);
  border-radius:var(--radius-lg);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}

/* ---------- 14 横向时间轨道 ---------- */
.rail{
  position:relative;
  overflow-x:auto;
  overflow-y:hidden;
  padding:8px 2px 14px;
  scroll-snap-type:x proximity;
  scrollbar-width:thin;
  scrollbar-color:var(--stone-500) transparent;
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-track{background:rgba(61,86,72,.35);border-radius:99px}
.rail::-webkit-scrollbar-thumb{background:var(--stone-500);border-radius:99px}
.rail__track{
  display:flex;
  gap:clamp(14px,2vw,28px);
  min-width:max-content;
  padding:4px 2px 6px;
}
.rail__item{
  flex:0 0 auto;
  width:min(300px,74vw);
  scroll-snap-align:start;
}
.rail__item::before{
  content:"";
  display:block;
  width:2px;
  height:16px;
  margin-bottom:12px;
  background:var(--lime-400);
}
.rail__tick{
  display:block;
  margin-bottom:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--stone-300);
}

/* ---------- 15 左右对镜台 ---------- */
.mirror{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  gap:clamp(14px,2vw,28px);
  align-items:stretch;
}
.mirror__side{
  background:var(--moss-700);
  border:1px solid var(--stone-500);
  border-radius:var(--radius);
  padding:clamp(18px,2vw,26px);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.mirror__side:hover{border-color:var(--lime-400);box-shadow:0 0 0 1px var(--lime-400)}
.mirror__side--accent{border-color:rgba(255,106,43,.5)}
.mirror__side--accent:hover{border-color:var(--lava-500);box-shadow:0 0 0 1px var(--lava-500)}
.mirror__mid{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-width:76px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--stone-300);
  text-align:center;
}

/* ---------- 16 纵向情报流 ---------- */
.feed{display:flex;flex-direction:column}
.feed__item{
  display:grid;
  grid-template-columns:112px 1fr;
  gap:clamp(14px,2vw,32px);
  padding:22px 12px 22px 0;
  border-top:1px solid rgba(61,86,72,.75);
  transition:background-color .18s var(--ease),padding-left .18s var(--ease);
}
.feed__item:last-child{border-bottom:1px solid rgba(61,86,72,.75)}
.feed__item:hover{background:rgba(30,48,39,.6);padding-left:12px}
.feed__time{
  padding-top:4px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--stone-300);
}
.feed__title{
  font-size:1.0625rem;
  font-weight:700;
  line-height:1.4;
  color:var(--bone-100);
}
.feed__body{
  max-width:46em;
  margin-top:6px;
  font-size:.9375rem;
  line-height:1.7;
  color:var(--stone-300);
  transition:color .18s var(--ease);
}
.feed__item[data-open="true"] .feed__body{color:var(--bone-100)}

/* ---------- 17 筛选标签组 ---------- */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  padding:14px 0;
}
.filter-chip{
  padding:7px 14px;
  border:1px solid var(--stone-500);
  border-radius:999px;
  background:transparent;
  color:var(--stone-300);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease),
             border-color .18s var(--ease);
}
.filter-chip:hover{color:var(--bone-100);border-color:var(--stone-300)}
.filter-chip[aria-pressed="true"]{
  background:var(--lime-400);
  border-color:var(--lime-400);
  color:var(--night-950);
  font-weight:600;
}

/* ---------- 18 图片容器基础规则 ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  border:1px solid var(--stone-500);
  border-radius:var(--radius);
  background-color:var(--moss-700);
  background-image:linear-gradient(145deg,var(--moss-700) 0%,var(--night-800) 60%,var(--night-950) 100%);
}
.media-frame img,
.media-frame picture,
.media-frame video{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.media-frame--16x9{aspect-ratio:16 / 9}
.media-frame--4x3{aspect-ratio:4 / 3}
.media-frame--1x1{aspect-ratio:1 / 1}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--clip{
  clip-path:polygon(0 0,100% 0,100% 88%,0 100%);
  border-radius:var(--radius) var(--radius) 0 0;
}
.media-frame__tag{
  position:absolute;
  left:14px;
  bottom:14px;
  z-index:2;
}

/* ---------- 19 悬浮章节索引（JS 生成） ---------- */
.float-index{
  position:fixed;
  right:26px;
  top:50%;
  z-index:90;
  display:none;
  flex-direction:column;
  gap:10px;
  padding-left:14px;
  border-left:1px solid var(--stone-500);
  transform:translateY(-50%);
}
.float-index__item{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--stone-300);
  transition:color .18s var(--ease);
}
.float-index__item::before{
  content:"";
  width:14px;
  height:1px;
  background:var(--stone-500);
  transition:width .18s var(--ease),background-color .18s var(--ease);
}
.float-index__item:hover{color:var(--bone-100)}
.float-index__item[aria-current="true"]{color:var(--lime-400)}
.float-index__item[aria-current="true"]::before{
  width:26px;
  background:var(--lime-400);
}
.float-index__num{opacity:.7}

/* ---------- 20 滚动显现 ---------- */
body.js-reveal .reveal{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
body.js-reveal .reveal.is-visible{
  opacity:1;
  transform:none;
}

/* ---------- 21 响应式 ---------- */
@media (min-width:1240px){
  .float-index{display:flex}
}

@media (max-width:1100px){
  .nav-list{gap:14px}
  .nav-link{font-size:.875rem}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:28px}
}

@media (max-width:1099px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}

@media (max-width:960px){
  .col-main,.col-side,.col-6{grid-column:span 12}
  .mirror{grid-template-columns:1fr}
  .mirror__mid{
    flex-direction:row;
    justify-content:flex-start;
    min-width:0;
  }
}

@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .header-shell{align-items:center;padding:14px 0}
  .brand-tag{display:none}

  .primary-nav{
    position:fixed;
    left:0;
    right:0;
    bottom:0;
    top:auto;
    z-index:120;
    display:block;
    max-height:82vh;
    overflow-y:auto;
    padding:20px var(--gutter) calc(22px + env(safe-area-inset-bottom,0px));
    background:rgba(10,19,16,.97);
    -webkit-backdrop-filter:blur(18px);
    backdrop-filter:blur(18px);
    border-top:1px solid var(--stone-500);
    border-radius:var(--radius-lg) var(--radius-lg) 0 0;
    transform:translateY(103%);
    visibility:hidden;
    transition:transform .24s var(--ease),visibility .24s var(--ease);
  }
  .primary-nav[data-open="true"]{
    transform:translateY(0);
    visibility:visible;
  }
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .nav-item + .nav-item{border-top:1px solid rgba(61,86,72,.6)}
  .nav-link{
    display:block;
    padding:15px 2px;
    font-size:1.0625rem;
  }
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{
    padding-left:16px;
    border-left:3px solid var(--lime-400);
  }
  .nav-foot{
    display:block;
    margin-top:22px;
    padding-top:18px;
    border-top:1px solid rgba(61,86,72,.6);
  }
}

@media (max-width:760px){
  .feed__item{grid-template-columns:1fr;gap:8px;padding-right:0}
  .feed__time{padding-top:0}
}

@media (max-width:640px){
  h1{font-size:clamp(2.25rem,10vw,3rem)}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-contact__row{grid-template-columns:1fr;gap:4px}
  .footer-bottom{align-items:flex-start}
  .stat-row{grid-template-columns:1fr}
}

/* ---------- 22 降低动态效果 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  body.js-reveal .reveal{
    opacity:1;
    transform:none;
  }
  .card:hover,.card:focus-within,
  .btn:hover{transform:none}
}