/* ============================================================
   完美电竞中文官方站 · 共享样式 /assets/site.css
   深空蓝底 · 霓虹紫结构 · 高亮青数据 · 品红点缀
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --ink-900:#05091A;
  --ink-800:#0A1230;
  --ink-700:#121F49;
  --violet:#7B5CFF;
  --cyan:#33E1DE;
  --magenta:#FF3D9A;
  --amber:#FFC24B;
  --white:#E9EDFF;
  --muted:#A9B3D6;
  --line:#2B3A6E;

  --cut:18px;
  --pill:999px;
  --gutter:clamp(16px,4vw,48px);
  --shell:1320px;

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

  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:240ms;
  --header-offset:112px;
}

/* ---------- 2. Reset 与底色 ---------- */
*,*::before,*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:var(--header-offset);
}

body{
  margin:0;
  min-height:100vh;
  color:var(--white);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  background-color:var(--ink-900);
  background-image:
    radial-gradient(1100px 620px at 10% -12%, rgba(123,92,255,.24), transparent 62%),
    radial-gradient(900px 540px at 94% 4%, rgba(51,225,222,.14), transparent 60%),
    radial-gradient(760px 520px at 48% 112%, rgba(255,61,154,.12), transparent 66%);
  background-attachment:fixed;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:
    repeating-linear-gradient(0deg, rgba(43,58,110,.18) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(90deg, rgba(43,58,110,.18) 0 1px, transparent 1px 72px);
  opacity:.6;
}

img,svg,video{display:block;max-width:100%}
a{color:var(--cyan);text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
[hidden]{display:none !important}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:3px}
::selection{background:var(--violet);color:#fff}

/* ---------- 3. 中文排版 ---------- */
h1,h2,h3,h4{
  margin:0 0 .5em;
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.16;
  letter-spacing:-.02em;
  color:var(--white);
}
h1{font-size:clamp(32px,5.2vw,56px)}
h2{font-size:clamp(26px,3.6vw,40px)}
h3{font-size:clamp(21px,2.4vw,28px)}
h4{font-size:clamp(17px,1.8vw,22px)}
p{margin:0 0 1.1em}
strong{color:#fff;font-weight:700}
main{display:block}
main [id]{scroll-margin-top:var(--header-offset)}

.text-muted,.muted{color:var(--muted)}
.mono,.data{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.data{letter-spacing:.06em}
.editorial{font-family:var(--font-editorial);font-weight:600;letter-spacing:0}

.visually-hidden{
  position:absolute!important;
  width:1px;height:1px;
  margin:-1px;padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
  border:0;
}

/* ---------- 4. 布局骨架 ---------- */
.container{
  width:min(var(--shell),100% - 2 * var(--gutter));
  margin-inline:auto;
}

.section{
  position:relative;
  padding-block:clamp(44px,6.5vw,96px);
}

.section-head{max-width:70ch;margin-bottom:clamp(22px,3vw,40px)}

.eyebrow{
  display:flex;
  align-items:center;
  gap:10px;
  margin:0 0 10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{
  content:"";
  width:34px;
  height:1px;
  background:linear-gradient(90deg,var(--cyan),rgba(51,225,222,0));
}
.section-title{margin:0 0 12px}
.section-lede{margin:0;max-width:64ch;font-size:17px;color:var(--muted)}

.divider-slash{
  position:relative;
  height:1px;
  margin-block:clamp(30px,4.5vw,62px);
  background:linear-gradient(90deg,rgba(43,58,110,0),rgba(43,58,110,.95) 14%,rgba(43,58,110,.95) 86%,rgba(43,58,110,0));
}
.divider-slash::after{
  content:"";
  position:absolute;
  left:50%;top:-6px;
  width:34px;height:12px;
  transform:translateX(-50%) skewX(-28deg);
  background:linear-gradient(90deg,var(--violet),var(--cyan));
  opacity:.85;
}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 26px;
  font-family:var(--font-display);
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  border:1px solid transparent;
  cursor:pointer;
  clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px));
  transition:transform var(--dur) var(--ease),color var(--dur) var(--ease),background var(--dur) var(--ease),filter var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn--primary{
  background:linear-gradient(120deg,var(--violet),#5B3CE0);
  color:#fff;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.16);
  filter:drop-shadow(0 8px 18px rgba(123,92,255,.42));
}
.btn--primary:hover{
  transform:translateY(-2px);
  background:linear-gradient(120deg,#8C6FFF,var(--violet));
  filter:drop-shadow(0 12px 24px rgba(51,225,222,.45));
}
.btn--ghost{
  background:rgba(18,31,73,.55);
  border-color:var(--line);
  color:var(--white);
}
.btn--ghost:hover{transform:translateY(-2px);border-color:var(--cyan);color:var(--cyan)}

/* ---------- 6. 切角面板与 Bento 网格 ---------- */
.panel{
  --cutline:var(--line);
  position:relative;
  border:1px solid var(--line);
  background-color:rgba(18,31,73,.5);
  background-image:
    linear-gradient(135deg,transparent calc(50% - .6px),var(--cutline) calc(50% - .6px),var(--cutline) calc(50% + .6px),transparent calc(50% + .6px)),
    linear-gradient(135deg,transparent calc(50% - .6px),var(--cutline) calc(50% - .6px),var(--cutline) calc(50% + .6px),transparent calc(50% + .6px)),
    linear-gradient(180deg,rgba(18,31,73,.92),rgba(10,18,48,.94));
  background-size:
    calc(var(--cut) * 1.4142) calc(var(--cut) * 1.4142),
    calc(var(--cut) * 1.4142) calc(var(--cut) * 1.4142),
    100% 100%;
  background-position:top right,bottom left,center;
  background-repeat:no-repeat;
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease),filter var(--dur) var(--ease);
}
.panel:hover{
  --cutline:rgba(51,225,222,.55);
  border-color:rgba(51,225,222,.5);
  filter:drop-shadow(0 10px 26px rgba(51,225,222,.16));
}
.panel-head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px 12px;
  border-bottom:1px solid rgba(43,58,110,.6);
}
.panel-title{margin:0;font-family:var(--font-display);font-size:18px;letter-spacing:-.01em}
.panel-body{padding:18px 22px 22px;color:var(--muted);font-size:16px}
.panel-body > :last-child{margin-bottom:0}

.bento{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(12px,1.5vw,20px);
}
.bento-cell{grid-column:span 4}
.bento-cell--wide{grid-column:span 6}
.bento-cell--full{grid-column:span 12}

/* ---------- 7. 标签 / 状态 / 数据 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--cyan);
  border:1px solid rgba(51,225,222,.45);
  background:rgba(51,225,222,.08);
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,0 100%);
}
.tag--magenta{color:var(--magenta);border-color:rgba(255,61,154,.5);background:rgba(255,61,154,.1)}
.tag--amber{color:var(--amber);border-color:rgba(255,194,75,.5);background:rgba(255,194,75,.1)}

.status{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--muted);
}
.status-dot{
  width:8px;height:8px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 10px var(--cyan);
}

.stat{display:grid;gap:6px}
.stat-value{
  font-family:var(--font-mono);
  font-size:clamp(24px,3vw,34px);
  line-height:1;
  letter-spacing:.02em;
  color:var(--cyan);
}
.stat-label{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
}

/* ---------- 8. 面包屑与正文 ---------- */
.breadcrumb{margin:0 0 clamp(16px,2.4vw,26px)}
.breadcrumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px 10px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.06em;
}
.breadcrumb-item{display:flex;align-items:center;gap:10px;color:var(--muted)}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:var(--line)}
.breadcrumb-link{color:var(--muted)}
.breadcrumb-link:hover{color:var(--cyan)}

.prose{max-width:74ch;font-size:17px;color:var(--muted)}
.prose h2,.prose h3,.prose h4{color:var(--white);margin-top:1.6em}
.prose ul,.prose ol{list-style:revert;padding-left:1.35em;margin:0 0 1.2em}
.prose li{margin-bottom:.45em}
.prose a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
.prose blockquote{
  margin:1.6em 0;
  padding:6px 0 6px 20px;
  border-left:2px solid var(--violet);
  font-family:var(--font-editorial);
  font-size:19px;
  color:var(--white);
}
.prose code{
  font-family:var(--font-mono);
  font-size:.9em;
  padding:2px 6px;
  color:var(--cyan);
  background:rgba(51,225,222,.1);
}

/* ---------- 9. 折叠面板 / 目录 / 筛选 / 返回顶部 ---------- */
.fold{
  margin-bottom:12px;
  border:1px solid var(--line);
  background:rgba(10,18,48,.6);
  transition:border-color var(--dur) var(--ease);
}
.fold[open]{border-color:rgba(51,225,222,.45)}
.fold-summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:16px 20px;
  font-family:var(--font-display);
  font-weight:700;
  cursor:pointer;
  list-style:none;
}
.fold-summary::-webkit-details-marker{display:none}
.fold-summary::after{content:"+";font-family:var(--font-mono);color:var(--cyan);font-size:18px;line-height:1}
.fold[open] .fold-summary::after{content:"–"}
.fold-body{padding:0 20px 20px;font-size:16px;color:var(--muted)}
.fold-body > :last-child{margin-bottom:0}

.toc{position:sticky;top:calc(var(--header-offset) + 8px)}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-link{
  display:block;
  padding:8px 12px;
  border-left:2px solid transparent;
  font-size:14px;
  color:var(--muted);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.toc-link:hover{color:var(--white);border-color:rgba(51,225,222,.4)}
.toc-link[aria-current="true"]{
  color:var(--cyan);
  border-color:var(--cyan);
  background:rgba(51,225,222,.08);
}

.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin-bottom:clamp(18px,2.4vw,30px);
}
.filter-btn{
  padding:8px 16px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--muted);
  background:rgba(18,31,73,.55);
  border:1px solid var(--line);
  border-radius:var(--pill);
  cursor:pointer;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.filter-btn:hover{color:var(--white);border-color:rgba(51,225,222,.55)}
.filter-btn[aria-pressed="true"]{
  color:#04101C;
  font-weight:700;
  border-color:transparent;
  background:linear-gradient(120deg,var(--cyan),var(--violet));
}
.filter-count{font-family:var(--font-mono);color:var(--cyan);letter-spacing:.08em}

.to-top{
  position:fixed;
  right:clamp(16px,3vw,34px);
  bottom:clamp(16px,3vw,34px);
  z-index:70;
  display:grid;
  place-items:center;
  width:50px;height:50px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--cyan);
  background:rgba(10,18,48,.92);
  border:1px solid rgba(51,225,222,.5);
  border-radius:50%;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(14px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur),border-color var(--dur),color var(--dur);
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--violet);color:var(--white);box-shadow:0 0 24px -6px rgba(123,92,255,.9)}

/* ---------- 10. 图片容器基础规则 ---------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(18,31,73,.92),rgba(10,18,48,.92));
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(43,58,110,.35) 0 1px,transparent 1px 48px);
  opacity:.5;
}
.media-frame img,.media-frame video{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.media-frame:hover img{transform:scale(1.03)}
.media-frame--wide{aspect-ratio:16 / 9}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame--band{aspect-ratio:21 / 9}

/* ---------- 11. 动效入场协议 ---------- */
html.has-js [data-reveal]{
  opacity:0;
  transform:translateY(24px);
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}
html.has-js [data-reveal][data-revealed]{opacity:1;transform:none}

/* ---------- 12. 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:12px;left:12px;
  z-index:200;
  padding:10px 18px;
  font-weight:700;
  color:#04101C;
  background:var(--cyan);
  border-radius:4px;
  transform:translateY(-180%);
  transition:transform var(--dur) var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:none;outline:2px solid var(--white)}

/* ---------- 13. 头部：悬浮胶囊导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:linear-gradient(180deg,rgba(5,9,26,.94),rgba(5,9,26,.72));
  border-bottom:1px solid rgba(43,58,110,.6);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}

.header-shell{
  display:flex;
  align-items:center;
  gap:clamp(10px,1.4vw,20px);
  width:min(1360px,100% - 2 * var(--gutter));
  margin-inline:auto;
  padding-block:14px;
  transition:padding var(--dur) var(--ease);
}
.site-header[data-scrolled] .header-shell{padding-block:9px}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:7px 16px 7px 8px;
  color:var(--white);
  background:rgba(18,31,73,.55);
  border:1px solid var(--line);
  border-radius:var(--pill);
  white-space:nowrap;
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.brand:hover{border-color:rgba(123,92,255,.7);background:rgba(18,31,73,.8)}
.brand-mark{
  width:34px;height:34px;
  flex:none;
  background:linear-gradient(135deg,var(--violet),var(--cyan));
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
  box-shadow:0 0 20px -4px rgba(123,92,255,.9);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{
  font-family:var(--font-display);
  font-size:16px;
  font-weight:800;
  letter-spacing:.04em;
}
.brand-sub{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.1em;
  color:var(--muted);
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  margin-left:auto;
  padding:8px 14px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.1em;
  color:var(--white);
  background:rgba(18,31,73,.6);
  border:1px solid var(--line);
  border-radius:var(--pill);
  cursor:pointer;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.nav-toggle-bars{display:flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle-bar{
  display:block;
  height:2px;
  background:var(--cyan);
  border-radius:2px;
  transition:transform var(--dur) var(--ease);
}
.site-header[data-open] .nav-toggle{border-color:var(--cyan);color:var(--cyan)}
.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)}

.primary-nav{
  margin-inline:auto;
  padding:6px;
  background:rgba(10,18,48,.75);
  border:1px solid var(--line);
  border-radius:var(--pill);
}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-item{flex:none}
.nav-link{
  display:block;
  padding:9px 18px;
  font-size:15px;
  color:var(--muted);
  border-radius:var(--pill);
  white-space:nowrap;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.nav-link:hover{color:var(--white);background:rgba(123,92,255,.16)}
.nav-link[aria-current="page"]{
  color:#05091A;
  font-weight:700;
  background:linear-gradient(120deg,var(--cyan),var(--violet));
  box-shadow:0 0 22px -4px rgba(123,92,255,.9);
}

.header-cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  flex:none;
  padding:10px 18px;
  font-size:14px;
  font-weight:600;
  color:var(--cyan);
  background:rgba(10,18,48,.7);
  border:1px solid rgba(51,225,222,.5);
  border-radius:var(--pill);
  white-space:nowrap;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.header-cta:hover{color:var(--white);border-color:var(--violet);background:rgba(123,92,255,.2)}
.header-cta-dot{
  width:8px;height:8px;
  border-radius:50%;
  background:var(--magenta);
  box-shadow:0 0 10px var(--magenta);
}

.scroll-progress{
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:rgba(43,58,110,.5);
  overflow:hidden;
}
.scroll-progress-bar{
  display:block;
  width:100%;
  height:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--violet) 55%,var(--magenta));
  box-shadow:0 0 12px rgba(51,225,222,.9);
}

/* ---------- 14. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,120px);
  background:linear-gradient(180deg,rgba(10,18,48,.45),rgba(5,9,26,1) 62%);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;
  width:min(420px,64%);
  height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet) 55%,rgba(123,92,255,0));
}
.footer-shell{
  display:grid;
  gap:clamp(26px,3.4vw,52px);
  width:min(var(--shell),100% - 2 * var(--gutter));
  margin-inline:auto;
  padding-block:clamp(40px,5vw,72px) 26px;
}

.footer-brand{display:grid;gap:10px;max-width:50ch;justify-items:start}
.footer-logo{
  display:flex;
  align-items:center;
  gap:12px;
  margin:0;
  font-family:var(--font-display);
  font-size:26px;
  font-weight:800;
  letter-spacing:.02em;
  color:var(--white);
}
.footer-logo::before{
  content:"";
  width:16px;height:16px;
  background:linear-gradient(135deg,var(--cyan),var(--violet));
  clip-path:polygon(0 0,100% 0,100% 60%,60% 100%,0 100%);
  box-shadow:0 0 18px -2px rgba(51,225,222,.9);
}
.footer-tagline{
  margin:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--cyan);
}
.footer-copy{margin:0;font-size:15.5px;color:var(--muted)}
.footer-cta{
  display:inline-flex;
  align-items:center;
  margin-top:6px;
  padding:11px 22px;
  font-family:var(--font-display);
  font-size:14px;
  font-weight:700;
  color:#05091A;
  background:linear-gradient(120deg,var(--cyan),var(--violet));
  clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px));
  transition:filter var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.footer-cta:hover{transform:translateY(-2px);filter:drop-shadow(0 10px 22px rgba(51,225,222,.5))}

.footer-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(20px,2.6vw,40px);
}
.footer-col{min-width:0}
.footer-col-title{
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:500;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--cyan);
}
.footer-list{display:grid;gap:9px}
.footer-list--contact{gap:16px}
.footer-link{
  font-size:15px;
  color:var(--muted);
  transition:color var(--dur) var(--ease);
}
.footer-link:hover{color:var(--cyan)}
.footer-link--strong{
  display:inline-block;
  margin-top:2px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.06em;
  color:var(--cyan);
}
.footer-address{margin:0 0 8px;font-size:15px;color:var(--muted)}
.footer-hint{
  margin:0 0 12px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--amber);
}

.contact-item{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:center;
  gap:2px 10px;
}
.contact-label{
  grid-column:1 / -1;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
}
.contact-value{
  font-family:var(--font-mono);
  font-size:13.5px;
  color:var(--white);
  word-break:break-all;
}
.copy-btn{
  padding:3px 10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--cyan);
  background:rgba(51,225,222,.08);
  border:1px solid var(--line);
  cursor:pointer;
  clip-path:polygon(0 0,calc(100% - 6px) 0,100% 6px,100% 100%,0 100%);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.copy-btn:hover{border-color:var(--cyan);background:rgba(51,225,222,.18)}
.copy-btn[data-copied]{color:#05091A;background:var(--cyan);border-color:var(--cyan)}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px 24px;
  padding-top:22px;
  border-top:1px solid rgba(43,58,110,.7);
}
.legal-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin:0;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--muted);
}
.legal-icp{color:var(--white)}
.legal-divider{width:1px;height:12px;background:var(--line)}
.legal-links{display:flex;flex-wrap:wrap;gap:8px 22px}
.footer-closing{
  margin:0;
  font-size:13px;
  color:rgba(169,179,214,.78);
}

/* ---------- 15. 响应式 ---------- */
@media (max-width:1024px){
  .bento-cell,.bento-cell--wide{grid-column:span 6}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .toc{position:static}
}

@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .site-header{position:sticky}
  .header-shell{padding-block:10px;gap:10px}
  .primary-nav{
    position:absolute;
    top:calc(100% + 8px);
    left:var(--gutter);
    right:var(--gutter);
    margin:0;
    padding:10px;
    border-radius:18px;
    background:rgba(7,13,36,.98);
    box-shadow:0 24px 48px -20px rgba(0,0,0,.95);
    opacity:0;
    visibility:hidden;
    transform:translateY(-8px);
    transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur);
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:4px}
  .nav-link{padding:12px 16px;border-radius:12px;font-size:16px}
  .site-header[data-open] .primary-nav{opacity:1;visibility:visible;transform:none}
}

@media (max-width:680px){
  body{font-size:15.5px}
  .brand-sub{display:none}
  .header-cta{padding:9px 14px;font-size:13px}
  .bento-cell,.bento-cell--wide{grid-column:span 12}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-logo{font-size:22px}
  .footer-legal{flex-direction:column;align-items:flex-start}
  .to-top{width:44px;height:44px}
}

/* ---------- 16. 无障碍：减弱动效 ---------- */
@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.has-js [data-reveal]{opacity:1;transform:none}
  .media-frame:hover img{transform:none}
}