/* ============================================================
   银河主站 /assets/site.css
   共享外壳：重置、变量、排版、页头、页脚、通用组件
   ============================================================ */

:root{
  --galaxy:#0A1230;
  --deep:#141C42;
  --grid-blue:#243066;
  --nebula:#6C4BD8;
  --violet:#A98BFF;
  --pulse:#22D3C5;
  --mist:#7FF0E4;
  --gold:#E6B455;
  --wine:#8C2F4A;
  --ink:#E7ECF7;
  --muted:#9AA6C4;
  --dim:#5F6D95;
  --line:rgba(36,48,102,.72);
  --line-soft:rgba(36,48,102,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --maxw:1240px;
  --gutter:28px;
  --rail-h:78px;
  --nav-h:52px;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono","Courier New",monospace;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{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;background:none;border:0}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
kbd{font-family:var(--font-mono)}
::selection{background:var(--nebula);color:#fff}

/* ---------- 基础排版 ---------- */
body{
  min-height:100vh;
  background-color:var(--galaxy);
  background-image:
    radial-gradient(1100px 560px at 82% -6%, rgba(108,75,216,.30), transparent 62%),
    radial-gradient(820px 480px at 4% 14%, rgba(34,211,197,.13), transparent 60%),
    radial-gradient(600px 600px at 46% 96%, rgba(140,47,74,.16), transparent 65%),
    linear-gradient(90deg, rgba(36,48,102,.55) 1px, transparent 1px),
    linear-gradient(180deg, rgba(36,48,102,.42) 1px, transparent 1px);
  background-size:auto,auto,auto,96px 96px,96px 96px;
  background-attachment:fixed,fixed,fixed,scroll,scroll;
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}

h1,h2,h3,h4{line-height:1.28;font-weight:700;letter-spacing:.06em}
h1{font-size:clamp(26px,3.2vw,40px);letter-spacing:.08em}
h2{font-size:clamp(22px,2.4vw,30px)}
h3{font-size:clamp(18px,1.6vw,22px)}
p{max-width:42ch}
a:hover{color:var(--violet)}
:focus-visible{outline:2px solid var(--pulse);outline-offset:3px}

.mono{font-family:var(--font-mono);font-feature-settings:"tnum" 1}
.sr-only{
  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:absolute;left:16px;top:-60px;z-index:200;
  padding:10px 16px;background:var(--pulse);color:var(--galaxy);
  font-family:var(--font-mono);font-size:13px;letter-spacing:.12em;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:12px;color:var(--galaxy)}

#main-content{outline:none;scroll-margin-top:120px;padding-bottom:40px}

/* ---------- 布局工具 ---------- */
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
.section{padding:72px 0;border-top:1px solid var(--line-soft)}
.section:first-child{border-top:0}
.section-head{display:flex;flex-direction:column;gap:10px;margin-bottom:30px}
.eyebrow{font-family:var(--font-mono);font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--pulse)}
.section-title{color:var(--ink)}
.section-note{color:var(--muted);font-size:15.5px;max-width:62ch}
.rule{height:1px;background:var(--line-soft);border:0;margin:36px 0}
.ruler{
  height:10px;
  background-image:repeating-linear-gradient(90deg,var(--grid-blue) 0 2px,transparent 2px 16px);
  border-bottom:1px solid var(--line-soft);
}

.grid{display:grid;gap:28px}
.grid--split{grid-template-columns:minmax(0,7fr) minmax(0,3fr)}

/* ---------- 面板 / 卡片 ---------- */
.panel{
  border:2px solid var(--line);
  background:linear-gradient(180deg,rgba(20,28,66,.72),rgba(16,24,58,.6));
  box-shadow:8px 8px 0 rgba(6,10,28,.55);
}
.panel-head{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 18px;border-bottom:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--muted);
}
.panel-body{padding:22px 18px}
.panel-body p{max-width:none}

/* ---------- 标签 / 状态 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border:1px solid var(--grid-blue);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;
  color:var(--muted);white-space:nowrap;
}
.tag--gold{color:var(--gold);border-color:rgba(230,180,85,.5);background:rgba(230,180,85,.08)}
.tag--pulse{color:var(--pulse);border-color:rgba(34,211,197,.45);background:rgba(34,211,197,.08)}
.tag--wine{color:#F0A9BE;border-color:rgba(140,47,74,.85);background:rgba(140,47,74,.24)}

.status{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--pulse);
}
.status-dot{
  width:8px;height:8px;border-radius:50%;background:var(--pulse);
  box-shadow:0 0 0 3px rgba(34,211,197,.18);
  animation:pulse-dot 2.6s var(--ease) infinite;
}
@keyframes pulse-dot{
  0%,100%{box-shadow:0 0 0 3px rgba(34,211,197,.18);opacity:1}
  50%{box-shadow:0 0 0 8px rgba(34,211,197,0);opacity:.72}
}

/* ---------- 按钮 / 链接 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 20px;border:2px solid transparent;
  font-size:14.5px;letter-spacing:.08em;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease);
}
.btn--primary{background:var(--nebula);border-color:var(--nebula);color:#fff;box-shadow:6px 6px 0 rgba(108,75,216,.26)}
.btn--primary:hover{color:#fff;transform:translate(-2px,-2px);box-shadow:9px 9px 0 rgba(108,75,216,.34)}
.btn--ghost{border-color:var(--grid-blue);color:var(--ink);background:rgba(20,28,66,.5)}
.btn--ghost:hover{border-color:var(--gold);color:var(--gold);transform:translate(-2px,-2px);box-shadow:6px 6px 0 rgba(230,180,85,.16)}

.arrow-link{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.14em;color:var(--pulse);
  border-bottom:1px solid rgba(34,211,197,.4);padding-bottom:2px;
  transition:color .22s var(--ease),border-color .22s var(--ease);
}
.arrow-link:hover{color:var(--gold);border-color:var(--gold)}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--muted);
  padding:22px 0 0;
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--pulse)}
.breadcrumb [aria-current="page"]{color:var(--ink)}
.crumb-sep{color:var(--dim)}

/* ---------- 图片容器 ---------- */
.media{
  position:relative;display:block;overflow:hidden;
  border:2px solid var(--grid-blue);
  background:linear-gradient(160deg,#101940 0%,#0C1436 58%,#0A1230 100%);
  aspect-ratio:16/10;
}
.media img,.media svg{width:100%;height:100%;object-fit:cover;filter:saturate(.92) contrast(1.06)}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(120% 92% at 50% 0%,transparent 44%,rgba(10,18,48,.74));
}
.media--wide{aspect-ratio:21/9}
.media--tall{aspect-ratio:4/5}
.media--square{aspect-ratio:1/1}
.media-frame{
  position:relative;padding:14px;
  border:2px solid var(--line);background:rgba(20,28,66,.42);
}
.media-frame::before{
  content:"";position:absolute;left:0;right:0;top:0;height:8px;
  background-image:repeating-linear-gradient(90deg,var(--pulse) 0 2px,transparent 2px 16px);
  opacity:.55;
}
.media-frame::after{
  content:"";position:absolute;left:0;bottom:0;width:8px;top:0;
  background-image:repeating-linear-gradient(180deg,var(--gold) 0 2px,transparent 2px 16px);
  opacity:.4;
}
.media-caption{
  margin-top:10px;font-family:var(--font-mono);font-size:11.5px;
  letter-spacing:.14em;color:var(--muted);
}

/* ---------- 显现与过滤状态 ---------- */
[data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
[data-reveal].is-in{opacity:1;transform:none}
.is-filtered-out{display:none !important}

/* ============================================================
   页头
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,18,48,.95);
  border-bottom:2px solid var(--grid-blue);
  backdrop-filter:blur(9px);
  -webkit-backdrop-filter:blur(9px);
}
.site-header::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--gold) 0 96px,rgba(230,180,85,0) 96px);
}

/* 上层：品牌层 */
.header-rail{
  max-height:120px;opacity:1;overflow:hidden;
  border-bottom:1px solid var(--line-soft);
  transition:max-height .34s var(--ease),opacity .26s var(--ease),border-color .34s var(--ease);
}
.rail-inner{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;gap:26px;
  width:100%;max-width:var(--maxw);margin:0 auto;
  padding:14px var(--gutter);
}

.brand{display:inline-flex;align-items:center;gap:13px;color:var(--ink)}
.brand-mark{
  display:grid;place-items:center;width:44px;height:44px;
  border:2px solid var(--pulse);color:var(--pulse);
  font-size:15px;letter-spacing:.1em;
  box-shadow:4px 4px 0 rgba(34,211,197,.16);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.brand:hover .brand-mark{
  color:var(--gold);border-color:var(--gold);
  transform:translate(-2px,-2px);box-shadow:6px 6px 0 rgba(230,180,85,.18);
}
.brand-text{display:flex;flex-direction:column;line-height:1.22}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.18em}
.brand-sub{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.24em;color:var(--dim)}

.brand-line{
  max-width:none;
  padding-left:16px;border-left:2px solid var(--grid-blue);
  font-size:13.5px;letter-spacing:.08em;color:var(--muted);
}

.rail-tools{display:flex;align-items:center;gap:16px;justify-self:end}

.deadline{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 13px;
  border:1px solid rgba(230,180,85,.5);
  background:linear-gradient(90deg,rgba(230,180,85,.12),rgba(230,180,85,.04));
}
.deadline-key{font-size:11px;letter-spacing:.16em;color:var(--gold)}
.deadline-val{font-size:14px;letter-spacing:.1em;color:var(--ink)}
.deadline-cnt{
  padding-left:10px;border-left:1px solid rgba(230,180,85,.42);
  font-size:12px;letter-spacing:.1em;color:var(--gold);
}

.search{position:relative;display:inline-flex;align-items:center}
.search-input{
  width:196px;padding:9px 34px 9px 12px;
  border:1px solid var(--grid-blue);background:rgba(20,28,66,.9);
  font-size:12.5px;letter-spacing:.08em;color:var(--ink);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.search-input::placeholder{color:var(--dim)}
.search-input:focus{outline:none;border-color:var(--pulse);box-shadow:0 0 0 2px rgba(34,211,197,.22)}
.search-key{position:absolute;right:11px;font-size:11px;color:var(--dim);pointer-events:none}

/* 下层：栏目层 */
.header-nav-row{
  display:flex;align-items:center;gap:20px;
  width:100%;max-width:var(--maxw);margin:0 auto;
  padding:0 var(--gutter);
  min-height:var(--nav-h);
  transition:min-height .3s var(--ease);
}
.header-nav{flex:1 1 auto;min-width:0}
.nav-list{display:flex;align-items:center;gap:2px;flex-wrap:wrap}
.nav-link{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 14px;
  border-bottom:2px solid transparent;
  font-size:14.5px;letter-spacing:.06em;color:var(--muted);
  transition:color .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),padding .3s var(--ease);
}
.nav-link:hover{color:var(--ink);background:rgba(108,75,216,.16)}
.nav-link[aria-current="page"]{color:var(--ink);border-bottom-color:var(--pulse)}
.nav-link[aria-current="page"] .nav-idx{color:var(--pulse)}
.nav-idx{font-size:10.5px;letter-spacing:.18em;color:var(--dim)}

.nav-meta{margin-left:auto;display:inline-flex;align-items:center;gap:12px}
.nav-route{
  padding:4px 10px;border:1px solid var(--grid-blue);
  font-size:11.5px;letter-spacing:.16em;color:var(--muted);
}
.nav-chip{
  display:none;padding:3px 9px;
  border:1px solid rgba(230,180,85,.45);background:rgba(230,180,85,.08);
  font-size:11px;letter-spacing:.14em;color:var(--gold);
}

/* 收起态（滚动后） */
.site-header[data-stuck] .header-rail{max-height:0;opacity:0;border-bottom-color:transparent}
.site-header[data-stuck] .header-nav-row{min-height:44px}
.site-header[data-stuck] .nav-link{padding:6px 12px;font-size:13.5px}
.site-header[data-stuck] .nav-chip{display:inline-block}
.site-header[data-stuck] .nav-route{opacity:.6}

/* 移动端索引按钮 */
.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 13px;border:1px solid var(--grid-blue);
  color:var(--ink);background:rgba(20,28,66,.6);
  transition:border-color .22s var(--ease),color .22s var(--ease);
}
.nav-toggle:hover{border-color:var(--pulse);color:var(--pulse)}
.nav-toggle-icon{display:flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle-bar{
  display:block;height:2px;width:100%;background:var(--pulse);
  transition:transform .26s var(--ease),opacity .22s var(--ease);
}
.nav-toggle-label{font-size:11.5px;letter-spacing:.18em;color:var(--muted)}

.site-header[data-open] .nav-toggle-bar:first-child{transform:translateY(3px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bar:last-child{transform:translateY(-3px) rotate(-45deg)}
.site-header[data-open] .nav-toggle-label{color:var(--pulse)}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  margin-top:96px;
  background:linear-gradient(180deg,rgba(20,28,66,.96),#0D1533 100%);
  border-top:2px solid rgba(230,180,85,.55);
  color:var(--muted);
  font-size:14.5px;
}
.footer-inner{
  display:grid;
  grid-template-columns:1.5fr .9fr .9fr 1.1fr;
  gap:38px;
  width:100%;max-width:var(--maxw);margin:0 auto;
  padding:56px var(--gutter) 26px;
}

.footer-brand{display:flex;flex-direction:column;gap:12px}
.footer-mark{
  display:grid;place-items:center;width:40px;height:40px;
  border:2px solid var(--gold);color:var(--gold);
  font-size:14px;letter-spacing:.1em;
  box-shadow:4px 4px 0 rgba(230,180,85,.14);
}
.footer-name{font-size:17px;font-weight:700;letter-spacing:.2em;color:var(--ink)}
.footer-tag{max-width:34ch;font-size:13.5px;line-height:1.8;color:var(--muted)}

.footer-contact{display:flex;flex-direction:column;gap:8px;margin-top:6px}
.footer-contact-item{display:flex;flex-wrap:wrap;gap:10px;align-items:baseline;font-size:13px}
.footer-key{
  flex:0 0 auto;min-width:52px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:var(--gold);opacity:.85;
}
.footer-val{color:var(--ink);font-size:13px;letter-spacing:.04em;word-break:break-word}

.footer-col{display:flex;flex-direction:column;gap:14px}
.footer-title{
  font-family:var(--font-mono);font-size:11.5px;font-weight:400;
  letter-spacing:.24em;color:var(--dim);
  padding-bottom:10px;border-bottom:1px solid var(--line-soft);
}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list a{
  color:var(--muted);font-size:14px;letter-spacing:.04em;
  border-bottom:1px solid transparent;padding-bottom:2px;
  transition:color .22s var(--ease),border-color .22s var(--ease);
}
.footer-list a:hover{color:var(--pulse);border-bottom-color:var(--pulse)}
.footer-list--plain li{display:flex;flex-wrap:wrap;gap:10px;align-items:baseline;font-size:13px}

.footer-bottom{
  grid-column:1 / -1;
  display:flex;flex-wrap:wrap;align-items:center;gap:16px 28px;
  margin-top:14px;padding-top:20px;
  border-top:1px solid rgba(230,180,85,.28);
}
.footer-legal,.footer-deadline{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;color:var(--dim);max-width:none;
}
.footer-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.footer-back{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;color:var(--muted);
  border-bottom:1px solid var(--line);
  transition:color .22s var(--ease),border-color .22s var(--ease);
}
.footer-back:hover{color:var(--pulse);border-color:var(--pulse)}
.to-top{
  padding:9px 15px;border:1px solid var(--grid-blue);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.16em;color:var(--ink);
  transition:border-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.to-top:hover{border-color:var(--gold);color:var(--gold);transform:translateY(-2px)}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1080px){
  .brand-line{display:none}
  .rail-inner{grid-template-columns:auto 1fr;}
  .search-input{width:160px}
  .footer-inner{grid-template-columns:1.4fr 1fr 1fr;gap:30px}
  .footer-verify{grid-column:1 / -1}
  .footer-verify .footer-list{flex-direction:row;flex-wrap:wrap;gap:24px}
}

@media (max-width:900px){
  :root{--gutter:18px;--rail-h:70px;--nav-h:54px}
  body{font-size:16.5px;line-height:1.82}
  .grid--split{grid-template-columns:minmax(0,1fr)}
  .section{padding:54px 0}

  .rail-inner{grid-template-columns:auto 1fr;gap:14px;padding:11px var(--gutter)}
  .rail-tools{justify-self:end;gap:10px}
  .deadline{padding:6px 10px;gap:7px}
  .deadline-key{display:none}
  .deadline-cnt{padding-left:8px}
  .search-input{width:132px}

  .nav-toggle{display:inline-flex}
  .header-nav{
    position:absolute;left:0;right:0;top:100%;
    background:linear-gradient(180deg,var(--deep),#0D1533);
    border-bottom:2px solid var(--grid-blue);
    max-height:0;opacity:0;visibility:hidden;overflow:hidden;
    transition:max-height .34s var(--ease),opacity .26s var(--ease),visibility .26s var(--ease);
  }
  .header-nav[data-open]{max-height:74vh;opacity:1;visibility:visible;overflow-y:auto}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;padding:10px var(--gutter) 20px}
  .nav-link{
    padding:15px 8px;
    border-bottom:1px solid var(--line-soft);
    border-left:2px solid transparent;
    font-size:16px;
  }
  .nav-link[aria-current="page"]{
    border-bottom-color:var(--line-soft);
    border-left-color:var(--pulse);
    background:rgba(34,211,197,.08);
  }
  .nav-route{display:none}
  .site-header[data-stuck] .nav-link{padding:15px 8px;font-size:16px}
  .brand-line{display:none}

  .footer-inner{grid-template-columns:1fr 1fr;gap:28px;padding:44px var(--gutter) 22px}
  .footer-brand{grid-column:1 / -1}
  .footer-verify{grid-column:1 / -1}
  .footer-actions{margin-left:0}
}

@media (max-width:560px){
  :root{--gutter:15px}
  .search{display:none}
  .deadline{flex-wrap:nowrap}
  h1{font-size:24px}
  .footer-inner{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:14px}
  .footer-actions{width:100%;justify-content:space-between}
  .panel-body{padding:18px 14px}
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1;transform:none}
  .status-dot{animation:none}
}