/* ============================================================
   PG CN V4 · 共享外壳样式  /assets/site.css
   深空黑底 / 电光紫 + 霓虹青双通道 / 琥珀金点缀
   ============================================================ */

:root{
  --bg-deep:#05070C;
  --panel:#0B1020;
  --indigo:#1B1440;
  --teal:#0C2E2C;
  --wine:#341125;
  --violet:#7C3AED;
  --cyan:#22D3EE;
  --amber:#F5B942;
  --text:#E8ECF7;
  --text-2:#9BA6C6;
  --line:#223052;
  --ok:#34D399;
  --watch:#F5B942;
  --off:#F2617A;

  --rail-w:88px;
  --strip-h:44px;
  --topbar-h:58px;

  --r-lg:28px;
  --r-md:18px;
  --r-sm:12px;
  --pill:999px;

  --font-sans:"Inter Display","Inter","Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  background:var(--bg-deep);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  min-height:100vh;
  overflow-x:hidden;
  padding-top:var(--topbar-h);
}
body.is-nav-open{overflow:hidden}
main{display:block}

/* ---------- 排版 ---------- */
h1,h2,h3,h4{margin:0 0 .6em;font-weight:800;letter-spacing:.02em;line-height:1.24;color:var(--text)}
h1{font-size:clamp(2rem,5.4vw,3.35rem)}
h2{font-size:clamp(1.5rem,3.4vw,2.15rem)}
h3{font-size:clamp(1.12rem,2vw,1.35rem)}
h4{font-size:1rem;font-weight:700;color:var(--text-2);letter-spacing:.08em}
p{margin:0 0 1.2em;max-width:38em}
small{font-size:.8125rem}
a{color:var(--cyan);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--amber)}
strong{color:#fff;font-weight:700}
hr{border:0;border-top:1px solid var(--line);margin:28px 0}
::selection{background:rgba(124,58,237,.5);color:#fff}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
img{max-width:100%;height:auto}
ul,ol{padding-left:1.15em}

.num{
  font-family:var(--font-mono);
  font-weight:600;
  color:var(--amber);
  white-space:nowrap;
  border-bottom:1px solid rgba(245,185,66,.45);
  padding-bottom:1px;
}

.annotation{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--text-2);
  line-height:1.6;
}
.annotation--vertical{writing-mode:vertical-rl;text-orientation:mixed}

.wrap{width:100%;max-width:1280px;margin:0 auto;padding:0 clamp(18px,4vw,48px)}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:-80px;left:12px;
  z-index:200;
  padding:10px 20px;
  border-radius:var(--pill);
  background:linear-gradient(120deg,var(--violet),var(--cyan));
  color:#05070C;
  font-weight:700;
  font-size:14px;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:calc(var(--topbar-h) + 10px);color:#05070C}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;
  height:var(--topbar-h);
  z-index:90;
  display:flex;align-items:center;gap:12px;
  padding:0 14px;
  background:linear-gradient(180deg,rgba(11,16,32,.98),rgba(5,7,12,.9));
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.topbar__brand{display:inline-flex;align-items:center;gap:8px;color:var(--text);font-weight:800;letter-spacing:.06em}
.topbar__mark{
  width:10px;height:10px;border-radius:3px;
  background:linear-gradient(135deg,var(--violet),var(--cyan));
  box-shadow:0 0 12px rgba(34,211,238,.7);
}
.topbar__name{font-size:15px}
.topbar__ver{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--amber);
  border:1px solid rgba(245,185,66,.55);
  border-radius:var(--pill);
  padding:1px 7px;
}
.topbar__status{display:inline-flex;align-items:center;gap:6px;margin-left:2px}
.topbar__status-text{font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;color:var(--text-2)}
.nav-toggle{
  margin-left:auto;
  display:inline-flex;align-items:center;gap:9px;
  padding:8px 14px;
  border-radius:var(--pill);
  border:1px solid var(--line);
  background:rgba(124,58,237,.16);
  color:var(--text);
  font:inherit;font-size:13px;font-weight:600;letter-spacing:.08em;
  cursor:pointer;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:rgba(34,211,238,.6)}
.nav-toggle__bars{display:grid;gap:3px;width:16px}
.nav-toggle__bars i{display:block;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--violet),var(--cyan))}
.nav-toggle[aria-expanded="true"]{background:rgba(34,211,238,.18)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2){opacity:.35}
.nav-toggle__label{line-height:1}

/* ---------- 侧边轨道 / 移动抽屉 ---------- */
.rail{
  position:fixed;top:0;left:0;bottom:0;
  width:min(80vw,300px);
  z-index:95;
  display:flex;flex-direction:column;
  gap:14px;
  padding:18px 16px 22px;
  background:linear-gradient(180deg,#0B1020 0%,#1B1440 48%,#0B1020 100%);
  border-right:1px solid var(--line);
  box-shadow:0 0 70px rgba(0,0,0,.75);
  transform:translateX(-104%);
  transition:transform .32s var(--ease);
  overflow-y:auto;
  overscroll-behavior:contain;
}
.rail[data-open]{transform:translateX(0)}
.rail__head{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.rail__brand{color:var(--text);font-weight:800;letter-spacing:.08em}
.rail__brand-text{font-size:15px}
.rail__badge{
  display:inline-flex;align-items:center;gap:5px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;
  color:var(--amber);
  border:1px solid rgba(245,185,66,.55);
  border-radius:var(--pill);
  padding:3px 9px;
  box-shadow:0 0 14px -6px rgba(245,185,66,.8);
}
.rail__badge b{color:#fff;font-weight:700}
.rail__dots{display:inline-flex;align-items:center;gap:7px;margin-left:auto}
.rail__nav{margin:6px 0}
.rail__list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}
.rail__item{display:block}
.rail__link{
  position:relative;
  display:flex;align-items:center;
  padding:12px 14px;
  border-radius:14px;
  color:var(--text-2);
  font-size:15px;font-weight:600;letter-spacing:.06em;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.rail__link::before{
  content:"";position:absolute;left:0;top:50%;
  width:3px;height:0;
  transform:translateY(-50%);
  border-radius:3px;
  background:linear-gradient(180deg,var(--violet),var(--cyan));
  background-size:100% 200%;
  opacity:0;
  transition:height .25s var(--ease),opacity .25s var(--ease);
}
.rail__link:hover{color:var(--text);background:rgba(124,58,237,.14)}
.rail__link[aria-current="page"]{
  color:#fff;
  background:radial-gradient(120% 100% at 0% 50%,rgba(124,58,237,.4),rgba(34,211,238,.08) 60%,transparent 100%);
}
.rail__link[aria-current="page"]::before{
  height:62%;opacity:1;
  animation:railFlow 6s linear infinite;
}
@keyframes railFlow{from{background-position:0 0}to{background-position:0 200%}}
.rail__text{line-height:1.2}
.rail__foot{
  margin-top:auto;padding-top:14px;
  border-top:1px solid rgba(34,48,82,.7);
  display:flex;flex-direction:column;gap:2px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;line-height:1.6;
}
.rail__foot-label{color:var(--text-2)}
.rail__foot-value{color:var(--text)}

.nav-scrim{
  position:fixed;inset:0;
  z-index:85;
  background:rgba(5,7,12,.74);
  backdrop-filter:blur(2px);
  opacity:0;pointer-events:none;
  transition:opacity .3s var(--ease);
}
.nav-scrim[data-open]{opacity:1;pointer-events:auto}

/* ---------- 信息带（桌面） ---------- */
.rail-strip{display:none}

/* ---------- 桌面轨道形态 ---------- */
@media (min-width:900px){
  body{padding-top:var(--strip-h);padding-left:var(--rail-w)}
  .topbar{display:none}
  .nav-scrim{display:none}
  .skip-link{left:calc(var(--rail-w) + 16px);top:-80px}
  .skip-link:focus{top:calc(var(--strip-h) + 12px)}

  .rail{
    width:var(--rail-w);
    padding:20px 0 18px;
    transform:none;
    align-items:center;
    box-shadow:none;
    overflow-x:hidden;
    scrollbar-width:none;
    background:linear-gradient(180deg,#0B1020 0%,#1B1440 46%,#0B1020 100%);
  }
  .rail::-webkit-scrollbar{width:0;height:0}
  .rail__head{flex-direction:column;gap:9px;width:100%}
  .rail__brand{display:block;text-align:center;width:100%}
  .rail__brand-text{font-size:12px;letter-spacing:.14em;writing-mode:vertical-rl;text-orientation:upright;display:inline-block;line-height:1}
  .rail__badge{
    flex-direction:column;gap:0;
    font-size:10px;letter-spacing:.08em;
    padding:6px 7px;text-align:center;line-height:1.4;
  }
  .rail__dots{flex-direction:column;margin-left:0;gap:6px}
  .rail__nav{margin:auto 0;width:100%}
  .rail__list{gap:2px;align-items:center}
  .rail__link{
    width:62px;min-height:52px;
    justify-content:center;
    padding:14px 0;
    border-radius:var(--pill);
    font-size:13px;letter-spacing:.16em;
    writing-mode:vertical-rl;
    text-orientation:upright;
  }
  .rail__link::before{left:-6px;width:3px}
  .rail__link[aria-current="page"]{
    background:radial-gradient(60% 60% at 50% 50%,rgba(124,58,237,.42),transparent 72%);
  }
  .rail__link[aria-current="page"]::before{height:72%}
  .rail__foot{
    margin-top:0;padding-top:12px;width:100%;
    align-items:center;text-align:center;border-top:1px solid rgba(34,48,82,.7);
  }

  .rail-strip{
    position:fixed;top:0;left:var(--rail-w);right:0;
    height:var(--strip-h);
    z-index:70;
    display:flex;align-items:center;gap:14px;
    padding:0 clamp(18px,3vw,40px);
    background:rgba(11,16,32,.88);
    border-bottom:1px solid var(--line);
    backdrop-filter:blur(8px);
    font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
    color:var(--text-2);
  }
}
.rail-strip__label{
  padding:3px 10px;
  border-radius:var(--pill);
  border:1px solid var(--line);
  color:var(--text-2);
  flex:none;
}
.rail-strip__value{color:var(--text);font-weight:600;letter-spacing:.12em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rail-strip__meta{white-space:nowrap}
.rail-strip__time{color:var(--amber)}
.rail-strip__progress{
  margin-left:auto;flex:none;
  width:min(220px,24vw);height:3px;
  border-radius:3px;
  background:rgba(34,48,82,.9);
  overflow:hidden;
}
.rail-strip__progress i{
  display:block;height:100%;width:0;
  border-radius:3px;
  background:linear-gradient(90deg,var(--violet),var(--cyan));
  transition:width .12s linear;
}

/* ---------- 状态点 ---------- */
.status-dot{
  display:inline-block;
  width:8px;height:8px;border-radius:50%;
  background:var(--ok);
  animation:dotPulse 3s ease-in-out infinite;
}
.status-dot--ok{background:var(--ok);box-shadow:0 0 10px rgba(52,211,153,.7)}
.status-dot--watch{background:var(--watch);box-shadow:0 0 10px rgba(245,185,66,.7)}
.status-dot--off{background:var(--off);animation:none}
@keyframes dotPulse{
  0%,100%{opacity:1;transform:scale(1)}
  50%{opacity:.4;transform:scale(.78)}
}

/* ---------- 通用动作与标签 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;
  border-radius:var(--pill);
  border:1px solid transparent;
  font-family:inherit;font-size:15px;font-weight:700;letter-spacing:.04em;
  cursor:pointer;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn--primary{
  background:linear-gradient(120deg,var(--violet),var(--cyan));
  color:#05070C;
  box-shadow:0 12px 30px -14px rgba(124,58,237,.9);
}
.btn--primary:hover{color:#05070C}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn--ghost:hover{border-color:rgba(34,211,238,.65);color:var(--text)}
.btn--amber{background:transparent;border-color:rgba(245,185,66,.6);color:var(--amber)}
.btn--amber:hover{background:rgba(245,185,66,.12);color:var(--amber)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;
  border-radius:var(--pill);
  border:1px solid var(--line);
  background:rgba(11,16,32,.75);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  color:var(--text-2);
  white-space:nowrap;
}
.tag--violet{border-color:rgba(124,58,237,.6);color:#C9B4FB}
.tag--cyan{border-color:rgba(34,211,238,.55);color:#A5EAF6}
.tag--amber{border-color:rgba(245,185,66,.6);color:var(--amber)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;
  border-radius:var(--pill);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--amber);
  border:1px solid rgba(245,185,66,.5);
}

/* ---------- 面包屑 ---------- */
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  list-style:none;margin:0 0 20px;padding:0;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--text-2);
}
.breadcrumbs li{display:inline-flex;align-items:center;gap:8px}
.breadcrumbs li + li::before{content:"/";color:rgba(34,48,82,1)}
.breadcrumbs a{color:var(--text-2)}
.breadcrumbs a:hover{color:var(--cyan)}
.breadcrumbs [aria-current="page"]{color:var(--text)}

/* ---------- 堆叠画板 ---------- */
.panel{
  position:relative;
  border-radius:var(--r-lg);
  padding:clamp(22px,4vw,48px);
  margin:0 0 clamp(18px,3vw,32px);
  background:var(--panel);
  border:1px solid var(--line);
  overflow:hidden;
  scroll-margin-top:calc(var(--strip-h) + 20px);
}
.panel--indigo{background:linear-gradient(158deg,#1B1440 0%,#0B1020 68%)}
.panel--teal{background:linear-gradient(158deg,#0C2E2C 0%,#0B1020 70%)}
.panel--wine{background:linear-gradient(158deg,#341125 0%,#0B1020 72%)}
.panel--slant::after{
  content:"";
  position:absolute;
  right:-12%;bottom:-46%;
  width:62%;height:78%;
  background:linear-gradient(120deg,rgba(124,58,237,.22),rgba(34,211,238,.06) 60%,transparent);
  transform:skewY(-9deg);
  pointer-events:none;
}
.panel > *{position:relative;z-index:1}
.grid-veil{
  position:absolute;inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(34,48,82,.5) 1px,transparent 1px),
    linear-gradient(90deg,rgba(34,48,82,.5) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(ellipse at 72% 0%,#000 0%,transparent 70%);
  mask-image:radial-gradient(ellipse at 72% 0%,#000 0%,transparent 70%);
  opacity:.75;
}
.panel__head{display:flex;flex-direction:column;gap:8px;margin-bottom:clamp(16px,2.4vw,28px)}
.eyebrow{
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.24em;
  color:var(--cyan);
  text-transform:uppercase;
}
.panel__title{margin:0}
.lede{color:var(--text-2);font-size:1.0625rem;max-width:38em;margin:0}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:clamp(14px,2vw,22px);grid-template-columns:1fr}
.grid--tight{gap:10px}
@media (min-width:720px){
  .grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (min-width:1024px){
  .grid--side{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr)}
  .grid--side-rev{grid-template-columns:minmax(0,1fr) minmax(0,1.4fr)}
}

/* ---------- 卡片 / 数字 / 索引 / 时间轴 ---------- */
.card{
  position:relative;
  border-radius:var(--r-md);
  padding:20px 22px;
  background:rgba(11,16,32,.7);
  border:1px solid rgba(34,48,82,.9);
  transition:transform .3s var(--ease),border-color .3s var(--ease),background .3s var(--ease);
}
.card:hover{transform:translateY(-3px);border-color:rgba(34,211,238,.5);background:rgba(27,20,64,.6)}
.card__title{margin:0 0 .4em;font-size:1.0625rem}
.card__meta{margin:0;color:var(--text-2);font-size:.875rem}

.stat{display:flex;flex-direction:column;gap:2px}
.stat__value{
  font-family:var(--font-mono);
  font-size:clamp(1.5rem,3.6vw,2.1rem);
  font-weight:700;
  color:var(--amber);
  letter-spacing:.02em;
  white-space:nowrap;
}
.stat__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--text-2)}

.list-index{list-style:none;margin:0;padding:0;border-top:1px solid rgba(34,48,82,.8)}
.list-index__item{
  display:flex;align-items:baseline;gap:14px;
  padding:12px 4px;
  border-bottom:1px solid rgba(34,48,82,.8);
}
.list-index__num{
  font-family:var(--font-mono);font-size:12px;color:var(--amber);
  flex:none;letter-spacing:.08em;
}
.list-index__main{flex:1 1 auto;min-width:0}
.list-index__title{display:block;color:var(--text);font-weight:600}
.list-index__desc{display:block;color:var(--text-2);font-size:.875rem}

.timeline{list-style:none;margin:0;padding:0 0 0 18px;border-left:1px solid var(--line)}
.timeline__item{position:relative;padding:0 0 22px 18px}
.timeline__item::before{
  content:"";position:absolute;left:-24px;top:8px;
  width:9px;height:9px;border-radius:50%;
  background:var(--violet);
  box-shadow:0 0 0 4px rgba(124,58,237,.22);
}
.timeline__item--cyan::before{background:var(--cyan);box-shadow:0 0 0 4px rgba(34,211,238,.22)}
.timeline__time{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--amber);display:block}
.timeline__title{margin:2px 0 4px;font-size:1.0625rem}
.timeline__text{margin:0;color:var(--text-2);font-size:.9375rem}

.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 18px;margin:0;font-size:.9375rem}
.kv dt{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--text-2);padding-top:4px}
.kv dd{margin:0;color:var(--text)}

/* ---------- 数据表 ---------- */
.table-wrap{
  overflow-x:auto;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:rgba(12,46,44,.28);
  -webkit-overflow-scrolling:touch;
}
.data-table{width:100%;min-width:520px;border-collapse:collapse;font-size:14px}
.data-table thead th{
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.14em;font-weight:600;
  text-align:left;white-space:nowrap;
  color:var(--text-2);
  padding:14px 16px;
  background:rgba(27,20,64,.62);
  border-bottom:1px solid var(--line);
}
.data-table td{
  padding:13px 16px;
  color:var(--text-2);
  border-bottom:1px solid rgba(34,48,82,.65);
  vertical-align:top;
}
.data-table tbody tr:nth-child(odd){background:rgba(12,46,44,.3)}
.data-table tbody tr:hover{background:rgba(124,58,237,.14)}
.data-table td:first-child{color:var(--text);font-weight:600}
.data-table .cell-num{font-family:var(--font-mono);color:var(--amber);white-space:nowrap}
.data-table tr.row-detail{display:none}
.data-table tr.row-detail[data-open]{display:table-row}
.data-table tr.row-detail td{
  background:rgba(5,7,12,.72);
  color:var(--text-2);
  font-size:13px;
  padding:16px 18px;
}
.row-toggle{
  padding:4px 12px;
  border-radius:var(--pill);
  border:1px solid rgba(34,211,238,.45);
  background:transparent;
  color:var(--cyan);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.row-toggle:hover{background:rgba(34,211,238,.14)}
.row-toggle[aria-expanded="true"]{border-color:rgba(245,185,66,.6);color:var(--amber)}

/* ---------- 标签页 ---------- */
.tabs{
  display:flex;flex-wrap:wrap;gap:8px;
  padding:6px;
  margin:0 0 20px;
  border-radius:var(--pill);
  border:1px solid var(--line);
  background:rgba(11,16,32,.7);
}
.tab{
  flex:0 0 auto;
  padding:9px 18px;
  border:0;border-radius:var(--pill);
  background:transparent;
  color:var(--text-2);
  font:inherit;font-size:14px;font-weight:600;letter-spacing:.06em;
  cursor:pointer;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.tab:hover{color:var(--text)}
.tab[aria-selected="true"]{
  color:#05070C;
  background:linear-gradient(120deg,var(--violet),var(--cyan));
}
.tabpanel{padding:0}
.tabpanel[hidden]{display:none}
.tabpanel:focus-visible{outline-offset:8px}

/* ---------- 正文与图片容器 ---------- */
.prose{max-width:44em}
.prose h2,.prose h3{margin-top:1.4em}
.prose p{margin-bottom:1.2em}
.prose ul,.prose ol{margin:0 0 1.2em}
.prose li{margin-bottom:.4em;color:var(--text-2)}

.media-frame{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16/9;
  overflow:hidden;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:
    linear-gradient(135deg,#0B1020 0%,#1B1440 52%,#0C2E2C 100%);
}
.media-frame::after{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(34,48,82,.55) 1px,transparent 1px),
    linear-gradient(90deg,rgba(34,48,82,.55) 1px,transparent 1px);
  background-size:40px 40px;
  opacity:.6;
  pointer-events:none;
}
.media-frame img,.media-frame video{
  position:relative;z-index:1;
  display:block;width:100%;height:100%;
  object-fit:cover;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
@media (max-width:600px){
  .media-frame{border-radius:var(--r-sm)}
}

/* ---------- 入场动效 ---------- */
[data-reveal]{transition:opacity .32s var(--ease),transform .32s var(--ease)}
html[data-js] [data-reveal]{opacity:0;transform:translateY(8px)}
html[data-js] [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:clamp(40px,6vw,80px);
  padding:clamp(34px,5vw,60px) clamp(18px,4vw,56px) 26px;
  background:linear-gradient(180deg,rgba(27,20,64,.62) 0%,rgba(5,7,12,1) 68%);
  border-top:1px solid var(--line);
}
.footer-grid{display:grid;gap:clamp(22px,3vw,34px);grid-template-columns:1fr}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1080px){.footer-grid{grid-template-columns:1.1fr .8fr 1.5fr .95fr}}
.footer-seg{min-width:0}
.footer-seg--brand{display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.footer-brand{font-size:1.25rem;font-weight:800;letter-spacing:.08em;color:var(--text)}
.footer-ver{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 11px;
  border-radius:var(--pill);
  border:1px solid rgba(245,185,66,.55);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:var(--amber);
}
.footer-ver b{color:#fff}
.footer-note{margin:0;max-width:22em;color:var(--text-2);font-size:.875rem}
.footer-title{
  margin:0 0 12px;
  font-size:12px;font-weight:600;
  font-family:var(--font-mono);letter-spacing:.2em;
  color:var(--text-2);
  text-transform:uppercase;
}
.footer-title::before{
  content:"";
  display:inline-block;
  width:14px;height:2px;
  margin-right:8px;vertical-align:middle;
  border-radius:2px;
  background:linear-gradient(90deg,var(--violet),var(--cyan));
}
.footer-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.footer-list a{color:var(--text-2);font-size:.9375rem}
.footer-list a:hover{color:var(--cyan)}
.footer-list--info{gap:12px}
.footer-info{display:flex;flex-direction:column;gap:4px;font-size:.875rem;color:var(--text-2)}
.footer-info__label{font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;color:rgba(155,166,198,.85)}
.footer-addr{color:var(--text);line-height:1.6}
.copy-chip{
  display:inline-flex;align-items:center;gap:10px;
  align-self:flex-start;
  max-width:100%;
  padding:6px 12px;
  border-radius:var(--pill);
  border:1px solid var(--line);
  background:rgba(11,16,32,.8);
  color:var(--text);
  font:inherit;font-size:.8125rem;
  font-family:var(--font-mono);letter-spacing:.02em;
  cursor:pointer;
  text-align:left;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.copy-chip:hover{border-color:rgba(34,211,238,.6);background:rgba(27,20,64,.7)}
.copy-chip__text{overflow-wrap:anywhere}
.copy-chip__hint{
  flex:none;
  font-size:10px;letter-spacing:.12em;
  color:var(--amber);
}
.footer-bottom{
  margin-top:clamp(26px,4vw,44px);
  padding-top:18px;
  border-top:1px solid rgba(34,48,82,.8);
  display:flex;flex-wrap:wrap;gap:8px 24px;
  justify-content:space-between;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--text-2);
}
.footer-meta{min-width:0}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  html[data-js] [data-reveal]{opacity:1;transform:none}
  .rail{transition:none}
  .rail__link[aria-current="page"]::before{animation:none}
}