/* ============================================================
   EMC全站 · 版本对照档案  /assets/site.css
   档案室 + 终端：深墨蓝网格底 / 荧光青刻度 / 暖橙版本高亮
   ============================================================ */

/* ---------- 0. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:124px}
body{margin:0}
img,svg,video{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
table{border-collapse:collapse}
iframe{display:none}

/* ---------- 1. Tokens ---------- */
:root{
  --ink:#0A1826;
  --ink-2:#13293D;
  --line:#1E3A52;
  --cyan:#35F0D0;
  --amber:#FF9A3C;
  --paper:#EAF2F5;
  --muted:#8AA0B4;
  --verify:#0E7C6B;
  --light:#F2F5F7;
  --warn:#FFC46B;

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

  --maxw:1320px;
  --pad:clamp(16px,3vw,40px);
  --head-h:56px;
  --sticky-offset:124px;
  --grid-line:rgba(30,58,82,.48);
  --shadow-hard:5px 5px 0 rgba(0,0,0,.45);
  --ease:.16s ease;
}

/* ---------- 2. Base & 中文排版 ---------- */
body{
  min-height:100vh;
  display:flex;
  flex-direction:column;
  background-color:var(--ink);
  background-image:
    linear-gradient(to right,var(--grid-line) 1px,transparent 1px),
    linear-gradient(to bottom,var(--grid-line) 1px,transparent 1px);
  background-size:32px 32px;
  background-position:-1px -1px;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16.5px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4,h5,h6{
  margin:0 0 .55em;
  font-family:var(--font-head);
  font-weight:700;
  letter-spacing:.04em;
  line-height:1.24;
  color:var(--paper);
}
h1{font-size:clamp(1.85rem,3.6vw,3rem)}
h2{font-size:clamp(1.32rem,2.2vw,1.85rem)}
h3{font-size:clamp(1.08rem,1.5vw,1.3rem)}
h4{font-size:1.02rem;letter-spacing:.08em}

p{margin:0 0 1em}
p:last-child{margin-bottom:0}

a{color:var(--cyan);text-underline-offset:3px;text-decoration-thickness:1px}
strong,b{font-weight:700;color:var(--paper)}
code,kbd,samp,.mono{font-family:var(--font-mono);font-size:.92em;letter-spacing:0}

.num{
  font-family:var(--font-mono);
  font-size:1.2em;
  font-weight:500;
  letter-spacing:0;
  color:var(--cyan);
}

:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
::selection{background:var(--amber);color:var(--ink)}

/* ---------- 3. 跳转与容器 ---------- */
.skip-link{
  position:absolute;
  top:-90px;left:16px;
  z-index:200;
  padding:10px 16px;
  background:var(--cyan);
  color:var(--ink);
  font:700 13px/1 var(--font-mono);
  letter-spacing:.08em;
  text-decoration:none;
  transition:top var(--ease);
}
.skip-link:focus{top:10px}

.container{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--pad);
}

.content-grid{
  display:grid;
  grid-template-columns:minmax(0,3fr) minmax(0,9fr);
  gap:clamp(20px,3vw,48px);
  align-items:start;
}
.rail{position:sticky;top:var(--sticky-offset);align-self:start;min-width:0}
.main-col{min-width:0}

@media (max-width:1024px){
  .content-grid{grid-template-columns:minmax(0,1fr)}
  .rail{position:static;top:auto}
}

/* ---------- 4. 页头 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--ink);
  border-bottom:1px solid var(--cyan);
  box-shadow:0 4px 0 rgba(0,0,0,.35);
}

.hd-inner{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--pad);
  min-height:var(--head-h);
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,26px);
}

.hd-brand{
  flex:0 0 auto;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:1px;
  padding-right:clamp(12px,2vw,24px);
  border-right:1px solid var(--line);
}
.brand-mark{
  font-family:var(--font-head);
  font-size:17px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--paper);
  text-decoration:none;
  white-space:nowrap;
  transition:color var(--ease);
}
.brand-mark:hover{color:var(--cyan)}
.brand-sub{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--muted);
  white-space:nowrap;
}

.hd-axis{
  flex:1 1 auto;
  min-width:0;
  display:flex;
  align-items:center;
  gap:10px;
  padding-left:clamp(8px,1.6vw,20px);
  border-left:1px solid var(--line);
}
.axis-label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--muted);
  white-space:nowrap;
}
.axis-list{
  display:flex;
  align-items:center;
  gap:6px;
  list-style:none;
  margin:0;
  padding:2px 0;
  overflow-x:auto;
  scrollbar-width:none;
}
.axis-list::-webkit-scrollbar{display:none}
.axis-item a{
  display:block;
  padding:4px 10px;
  border:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.4;
  letter-spacing:.06em;
  color:var(--muted);
  text-decoration:none;
  white-space:nowrap;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease);
}
.axis-item a:hover,
.axis-item a:focus-visible{
  background:var(--cyan);
  border-color:var(--cyan);
  color:var(--ink);
}

.hd-actions{flex:0 0 auto;display:flex;align-items:center;gap:8px}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  height:34px;
  padding:0 14px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--paper);
  font:600 12.5px/1 var(--font-mono);
  letter-spacing:.08em;
  text-decoration:none;
  cursor:pointer;
  white-space:nowrap;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease);
}
.btn:hover,.btn:focus-visible{background:var(--ink-2);border-color:var(--cyan);color:var(--cyan)}
.btn-solid{background:var(--cyan);border-color:var(--cyan);color:var(--ink)}
.btn-solid:hover,.btn-solid:focus-visible{background:var(--amber);border-color:var(--amber);color:var(--ink)}
.btn-ghost{color:var(--paper)}

.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  height:34px;
  padding:0 12px;
  border:1px solid var(--line);
  background:var(--ink-2);
  color:var(--paper);
  font:600 12px/1 var(--font-mono);
  letter-spacing:.08em;
  cursor:pointer;
  transition:border-color var(--ease),color var(--ease);
}
.nav-toggle:hover,.nav-toggle:focus-visible{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle-mark{
  position:relative;
  display:block;
  width:14px;
  height:8px;
  border-top:1px solid currentColor;
  border-bottom:1px solid currentColor;
}
.nav-toggle-mark::after{
  content:"";
  position:absolute;
  left:0;right:0;top:3px;
  border-top:1px solid currentColor;
}

.site-nav{
  position:relative;
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--pad);
  border-top:1px solid var(--line);
}
.nav-list{
  display:flex;
  align-items:stretch;
  gap:2px;
  list-style:none;
  margin:0;
  padding:0;
  overflow-x:auto;
  scrollbar-width:none;
}
.nav-list::-webkit-scrollbar{display:none}
.nav-item{flex:0 0 auto}
.nav-link{
  display:block;
  padding:10px 14px;
  border-bottom:2px solid transparent;
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:500;
  letter-spacing:.06em;
  color:var(--muted);
  text-decoration:none;
  white-space:nowrap;
  transition:color var(--ease),background-color var(--ease),border-color var(--ease);
}
.nav-link:hover,.nav-link:focus-visible{color:var(--paper);background:var(--ink-2)}
.nav-link[aria-current="page"]{color:var(--paper);border-bottom-color:var(--amber)}

@media (max-width:900px){
  .hd-axis{display:none}
  .hd-actions .btn-ghost{display:none}
  .nav-toggle{display:inline-flex}

  .site-nav{
    display:none;
    position:absolute;
    left:0;right:0;top:100%;
    padding:8px var(--pad) 18px;
    background:var(--ink-2);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--cyan);
    box-shadow:0 8px 0 rgba(0,0,0,.4);
    max-height:min(72vh,520px);
    overflow-y:auto;
  }
  .site-nav[data-open="true"]{display:block}
  .nav-list{flex-direction:column;gap:0;overflow:visible}
  .nav-item{flex:1 1 auto}
  .nav-link{
    padding:13px 10px;
    border-bottom:1px solid var(--line);
    border-left:2px solid transparent;
    font-size:13.5px;
  }
  .nav-link[aria-current="page"]{
    border-bottom-color:var(--line);
    border-left-color:var(--amber);
    background:rgba(255,154,60,.08);
  }
}

@media (max-width:520px){
  .hd-actions{display:none}
  .brand-sub{display:none}
}

/* ---------- 5. 页脚 ---------- */
.site-footer{
  margin-top:auto;
  background-color:var(--ink);
  background-image:linear-gradient(rgba(19,41,61,.78),rgba(10,24,38,.98));
}
.site-footer::before{
  content:"";
  display:block;
  height:2px;
  background:linear-gradient(90deg,
    var(--cyan) 0 24%,
    var(--amber) 24% 38%,
    var(--line) 38% 100%);
}
.ft-inner{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:clamp(34px,4.5vw,64px) var(--pad) clamp(28px,3vw,44px);
  display:grid;
  grid-template-columns:1.05fr 1fr 1.25fr;
  gap:clamp(24px,3.5vw,56px);
}
.ft-col{min-width:0}
.ft-title{
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:500;
  letter-spacing:.14em;
  color:var(--cyan);
}
.ft-list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:9px;
}
.ft-item{font-size:14.5px;line-height:1.6}
.ft-link{
  position:relative;
  display:inline-block;
  padding-bottom:1px;
  color:var(--paper);
  text-decoration:none;
  transition:color var(--ease);
}
.ft-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:100%;height:1px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.ft-link:hover,.ft-link:focus-visible{color:var(--cyan)}
.ft-link:hover::after,.ft-link:focus-visible::after{transform:scaleX(1)}

.ft-label{
  display:block;
  margin-bottom:2px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--muted);
}
.ft-value{
  display:block;
  font-family:var(--font-mono);
  font-size:13.5px;
  line-height:1.6;
  color:var(--paper);
  word-break:break-word;
}
.ft-collect{
  margin:18px 0 0;
  max-width:26em;
  padding:10px 0 10px 12px;
  border-left:2px solid var(--amber);
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.7;
  letter-spacing:.04em;
  color:var(--warn);
}
.ft-note{
  margin:16px 0 0;
  max-width:30em;
  font-size:13px;
  line-height:1.7;
  color:var(--muted);
}
.ft-base{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:16px var(--pad) 28px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--muted);
}
.ft-filing{margin:0;color:var(--muted)}
.ft-legal{margin:0;color:var(--muted)}
.ft-mono{font-family:var(--font-mono);color:var(--cyan)}

@media (max-width:900px){
  .ft-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:620px){
  .ft-inner{grid-template-columns:1fr;gap:30px}
  .ft-base{flex-direction:column;align-items:flex-start}
}

/* ---------- 6. 面包屑 ---------- */
.breadcrumbs{
  padding:16px 0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--muted);
}
.bc-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0}
.bc-item{display:inline-flex;align-items:center;gap:8px;color:var(--muted)}
.bc-item[aria-current="page"]{color:var(--paper)}
.bc-link{color:var(--muted);text-decoration:none;transition:color var(--ease)}
.bc-link:hover,.bc-link:focus-visible{color:var(--cyan)}
.bc-sep{color:var(--line)}

/* ---------- 7. 面板 / 正文 / 浅色区 ---------- */
.panel{
  border:1px solid var(--line);
  background:var(--ink-2);
  padding:clamp(16px,2.4vw,26px);
}
.panel-title{
  margin:0 0 12px;
  font-family:var(--font-mono);
  font-size:12.5px;
  font-weight:500;
  letter-spacing:.12em;
  color:var(--cyan);
}
.prose{max-width:38em;font-size:16.5px;line-height:1.75;color:var(--paper)}
.prose h2{margin-top:1.7em;font-size:1.35rem}
.prose h3{margin-top:1.4em}
.prose ul,.prose ol{margin:0 0 1em;padding-left:1.3em}
.prose li{margin-bottom:.4em}
.prose li::marker{color:var(--cyan)}
.prose a{color:var(--cyan)}
.light-zone{
  background:var(--light);
  color:var(--ink);
  padding:clamp(20px,3vw,40px);
}
.light-zone h2,.light-zone h3{color:var(--ink)}
.light-zone a{color:var(--verify)}
.light-zone .ft-label,.light-zone .muted{color:#5A7286}

/* ---------- 8. 表格 ---------- */
.table-wrap{
  width:100%;
  overflow-x:auto;
  border:1px solid var(--line);
  background:rgba(19,41,61,.55);
}
.data-table{width:100%;font-size:14.5px}
.data-table th,
.data-table td{
  padding:10px 12px;
  border:1px solid var(--line);
  text-align:left;
  vertical-align:top;
}
.data-table thead th{
  background:var(--ink-2);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.08em;
  color:var(--cyan);
  white-space:nowrap;
}
.data-table tbody tr:hover{background:rgba(53,240,208,.05)}
.data-table .mono{font-size:13.5px;color:var(--paper)}

/* ---------- 9. 标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 8px;
  border:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11.5px;
  line-height:1.5;
  letter-spacing:.08em;
  color:var(--muted);
  white-space:nowrap;
}
.tag--current{border-color:var(--amber);color:var(--amber);background:rgba(255,154,60,.1)}
.tag--verified{border-color:var(--verify);color:#7FE9D8;background:rgba(14,124,107,.2)}
.tag--pending{border-color:var(--warn);color:var(--warn);background:rgba(255,196,107,.12)}

/* ---------- 10. 图片容器（页面阶段放 img） ---------- */
.media-frame{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16 / 10;
  overflow:hidden;
  border:1px solid var(--line);
  background-color:var(--ink-2);
  background-image:
    linear-gradient(to right,rgba(30,58,82,.7) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(30,58,82,.7) 1px,transparent 1px);
  background-size:24px 24px;
  box-shadow:var(--shadow-hard);
}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.9) contrast(1.03);
}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame__cap{
  position:absolute;
  left:0;bottom:0;
  padding:6px 10px;
  border-top:1px solid var(--line);
  border-right:1px solid var(--line);
  background:var(--ink);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--muted);
}

/* ---------- 11. JS 注入组件 ---------- */
.scroll-progress{
  position:fixed;
  top:0;left:0;
  z-index:120;
  width:100%;
  height:2px;
  transform:scaleX(0);
  transform-origin:left center;
  background:linear-gradient(90deg,var(--cyan),var(--amber));
  pointer-events:none;
}

.to-top{
  position:fixed;
  right:clamp(14px,2vw,28px);
  bottom:clamp(14px,2vw,28px);
  z-index:90;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:1px;
  width:46px;height:46px;
  border:1px solid var(--line);
  background:var(--ink-2);
  color:var(--cyan);
  cursor:pointer;
  box-shadow:var(--shadow-hard);
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease,border-color var(--ease),background-color var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover,.to-top:focus-visible{background:var(--cyan);border-color:var(--cyan);color:var(--ink)}
.to-top__arrow{font-size:14px;line-height:1}
.to-top__txt{font-family:var(--font-mono);font-size:10px;letter-spacing:.1em}

/* ---------- 12. 动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;scroll-padding-top:0}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .to-top{transform:none}
}