/* ============================================================
   版本彩讯 · V4 数据观察台
   /assets/site.css — 共享外壳：深空画布 / 堆叠面板 / 印刷标签 / 霓虹青数据线
   ============================================================ */

:root{
  --ink:#08111F;
  --panel:#0F1B2E;
  --hair:#22344F;
  --cyan:#3FE0D0;
  --cyan-soft:#9BF2E8;
  --amber:#F4B23F;
  --paper:#F3EFE4;
  --text:#E6EDF7;
  --muted:#94A7C0;
  --ok:#5BD9A0;
  --alert:#FF6B6B;

  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-cond:"Noto Sans SC Condensed","Noto Sans SC","Source Han Sans SC","PingFang SC",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;

  --header-h:72px;
  --rail:220px;
  --wrap:1280px;
  --gap:clamp(16px,2.2vw,32px);
  --shadow-panel:0 24px 48px -34px rgba(0,0,0,.95);
  --ease:cubic-bezier(.22,.68,.24,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--ink);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  background-image:
    radial-gradient(1100px 620px at 82% -8%, rgba(63,224,208,.10), transparent 62%),
    radial-gradient(860px 520px at 4% 18%, rgba(244,178,63,.06), transparent 66%),
    repeating-linear-gradient(90deg, rgba(34,52,79,.42) 0 1px, transparent 1px 104px),
    repeating-linear-gradient(0deg, rgba(34,52,79,.30) 0 1px, transparent 1px 104px);
  background-attachment:fixed;
}
body.is-nav-open{overflow:hidden}
img,svg{display:block;max-width:100%}
a{color:var(--cyan-soft);text-decoration:none;text-underline-offset:3px}
a:hover{text-decoration:underline}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:700;line-height:1.22;letter-spacing:-.01em;margin:0 0 .6em;color:var(--paper)}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.2em}
::selection{background:var(--cyan);color:#04161A}
:focus-visible{outline:2px solid var(--cyan-soft);outline-offset:3px;border-radius:2px}

/* ---------- 容器 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:clamp(16px,3.2vw,40px)}
.shell{
  display:grid;
  grid-template-columns:var(--rail) minmax(0,1fr);
  gap:clamp(20px,3vw,44px);
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:clamp(16px,3.2vw,40px);
}
#main-content{display:block;padding-top:calc(var(--header-h) + 8px)}
#main-content.main-flush{padding-top:0}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;top:8px;left:8px;z-index:300;
  transform:translateY(-200%);
  padding:10px 16px;
  background:var(--paper);color:#08111F;
  border:1px solid #08111F;
  font-family:var(--font-cond);font-size:13px;letter-spacing:.08em;
  transition:transform .2s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:none;text-decoration:none}

/* ============================================================
   页头
   ============================================================ */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:100;
  background:linear-gradient(180deg, rgba(8,17,31,.88) 0%, rgba(8,17,31,.42) 62%, rgba(8,17,31,0) 100%);
  border-bottom:1px solid transparent;
  transition:background .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.site-header[data-scrolled]{
  background:rgba(15,27,46,.94);
  -webkit-backdrop-filter:blur(12px) saturate(1.1);
  backdrop-filter:blur(12px) saturate(1.1);
  border-bottom-color:var(--hair);
  box-shadow:0 18px 36px -30px #000;
}
.header-inner{
  display:flex;align-items:center;
  gap:clamp(10px,1.6vw,24px);
  height:var(--header-h);
  position:relative;
}

/* 品牌 */
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text)}
.brand:hover{text-decoration:none}
.brand-dot{
  width:9px;height:9px;flex:0 0 auto;background:var(--cyan);
  box-shadow:0 0 0 4px rgba(63,224,208,.14), 0 0 12px rgba(63,224,208,.65);
}
.brand-mark{font-family:var(--font-display);font-size:19px;font-weight:700;letter-spacing:.02em;color:var(--paper);white-space:nowrap}
.brand-sub{
  font-family:var(--font-cond);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);border-left:1px solid var(--hair);padding-left:10px;white-space:nowrap;
}

/* 版本时间戳 */
.header-stamp{position:relative;flex:0 0 auto}
.stamp-toggle{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 10px;
  background:transparent;color:var(--muted);
  border:1px solid var(--hair);border-radius:2px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.02em;
  cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.stamp-toggle:hover,.header-stamp[data-open] .stamp-toggle{
  border-color:var(--cyan);color:var(--cyan-soft);background:rgba(63,224,208,.07);
}
.stamp-version{color:var(--amber);font-weight:700;letter-spacing:.06em}
.stamp-note{font-family:var(--font-sans);font-size:12px;letter-spacing:.02em;white-space:nowrap}
.stamp-note-pre{color:var(--muted)}
.stamp-caret{
  width:6px;height:6px;flex:0 0 auto;
  border-right:1px solid currentColor;border-bottom:1px solid currentColor;
  transform:rotate(45deg) translateY(-2px);
  transition:transform .18s var(--ease);
}
.header-stamp[data-open] .stamp-caret{transform:rotate(225deg) translateY(-2px)}
.stamp-pop{
  position:absolute;top:calc(100% + 12px);left:0;z-index:120;
  width:min(300px,78vw);
  padding:14px 16px;
  background:var(--panel);border:1px solid var(--hair);box-shadow:var(--shadow-panel);
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s var(--ease);
}
.stamp-pop::before{content:"";position:absolute;top:-1px;left:0;width:52px;height:2px;background:var(--cyan)}
.header-stamp:hover .stamp-pop,.header-stamp:focus-within .stamp-pop,.header-stamp[data-open] .stamp-pop{
  opacity:1;visibility:visible;transform:none;
}
.stamp-pop-title{
  margin:0 0 10px;font-family:var(--font-cond);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--cyan);
}
.stamp-list{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.stamp-list li{
  display:flex;align-items:baseline;justify-content:space-between;gap:12px;
  padding-bottom:8px;border-bottom:1px dashed rgba(34,52,79,.9);
  font-size:12px;line-height:1.5;
}
.stamp-list li:last-child{border-bottom:0;padding-bottom:0}
.stamp-list span{color:var(--muted);font-size:12px}
.stamp-time{font-family:var(--font-mono);font-style:normal;color:var(--amber);letter-spacing:.02em}

/* 主导航 */
.site-nav{display:flex;align-items:center;gap:clamp(10px,1.4vw,22px);margin-inline-start:auto}
.nav-list{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0}
.nav-link{
  position:relative;display:inline-block;padding:9px 11px;
  font-family:var(--font-cond);font-size:14px;letter-spacing:.06em;
  color:var(--muted);border:1px solid transparent;border-radius:2px;
  transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:11px;right:11px;bottom:4px;height:1px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(63,224,208,.06);text-decoration:none}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{
  color:var(--cyan-soft);
  background:rgba(63,224,208,.10);
  border-color:rgba(63,224,208,.32);
}
.nav-link[aria-current="page"]::after{transform:scaleX(1);background:var(--amber)}
.nav-cta{white-space:nowrap}

/* 抽屉开关 */
.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 12px;
  background:transparent;color:var(--text);
  border:1px solid var(--hair);border-radius:2px;
  font-family:var(--font-cond);font-size:13px;letter-spacing:.08em;
  cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan-soft)}
.nav-toggle-label{white-space:nowrap}
.nav-toggle-bars{position:relative;display:block;width:16px;height:10px}
.nav-toggle-bars::before,.nav-toggle-bars::after{
  content:"";position:absolute;left:0;right:0;height:1px;background:currentColor;
  transition:transform .2s var(--ease),top .2s var(--ease);
}
.nav-toggle-bars::before{top:0}
.nav-toggle-bars::after{top:9px}
.site-header[data-open] .nav-toggle-bars::before{top:5px;transform:rotate(45deg)}
.site-header[data-open] .nav-toggle-bars::after{top:5px;transform:rotate(-45deg)}

/* 遮罩与进度条 */
.nav-veil{display:none}
.header-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;z-index:96;
  background:rgba(34,52,79,.7);overflow:hidden;
}
.progress-bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--cyan-soft) 55%,var(--amber) 100%);
  transition:width .12s linear;
}

/* ============================================================
   通用按钮
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 18px;
  border:1px solid var(--hair);border-radius:2px;
  background:transparent;color:var(--text);
  font-family:var(--font-cond);font-size:14px;letter-spacing:.06em;
  cursor:pointer;text-decoration:none;
  transition:background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.btn:hover{
  text-decoration:none;border-color:var(--cyan);color:var(--cyan-soft);
  background:rgba(63,224,208,.09);transform:translateY(-1px);
}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--cyan);border-color:var(--cyan);color:#04161A;font-weight:700}
.btn-primary:hover{background:var(--cyan-soft);border-color:var(--cyan-soft);color:#04161A}
.btn-ghost{border-color:rgba(243,239,228,.28);color:var(--paper)}
.btn-ghost:hover{border-color:var(--paper);background:var(--paper);color:#08111F}
.btn-sm{padding:7px 11px;font-size:12px;letter-spacing:.08em}

/* ============================================================
   章节 / 刊头 / 正文
   ============================================================ */
.section{padding-block:clamp(48px,7vw,96px)}
.section-head{display:grid;gap:12px;max-width:62ch;margin-bottom:clamp(24px,3vw,40px)}
.section-head-title{font-family:var(--font-display);font-size:clamp(24px,3vw,36px);line-height:1.2;margin:0;color:var(--paper)}
.section-head-note{margin:0;font-size:14px;letter-spacing:.02em;color:var(--muted)}
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-cond);font-size:11px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--cyan);
}
.kicker::before{content:"";width:22px;height:1px;background:var(--cyan)}
.display{font-family:var(--font-display);font-weight:700;font-size:clamp(30px,4.4vw,56px);line-height:1.14;letter-spacing:-.01em;margin:0;color:var(--paper)}
.lead{font-size:clamp(16px,1.5vw,18px);line-height:1.9;color:var(--muted);max-width:36em;margin:0}
.prose{max-width:38em;font-size:17px;line-height:1.95;color:var(--text)}
.prose h2,.prose h3{font-family:var(--font-display);color:var(--paper);line-height:1.3;margin:2em 0 .6em}
.prose h2{font-size:clamp(21px,2.2vw,26px)}
.prose h3{font-size:18px}
.prose p{margin:0 0 1.1em}
.prose ul,.prose ol{color:var(--muted);margin:0 0 1.2em}
.prose li{margin-bottom:.5em}
.prose strong{color:var(--cyan-soft);font-weight:600}
.prose a{border-bottom:1px solid rgba(63,224,208,.4)}
.prose code{
  font-family:var(--font-mono);font-size:.92em;
  background:rgba(34,52,79,.6);border:1px solid var(--hair);padding:2px 6px;
}
.prose blockquote{
  margin:1.6em 0;padding:12px 0 12px 20px;
  border-left:2px solid var(--cyan);
  color:var(--cyan-soft);
  background:linear-gradient(90deg, rgba(63,224,208,.08), transparent 70%);
}
.hairline{height:1px;border:0;margin:0;background:linear-gradient(90deg,var(--hair),transparent)}

/* ============================================================
   网格 / 面板
   ============================================================ */
.grid{display:grid;gap:var(--gap)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--split{grid-template-columns:minmax(0,5fr) minmax(0,7fr);align-items:start}

.panel{
  position:relative;
  padding:clamp(20px,2.4vw,32px);
  background:linear-gradient(180deg, rgba(15,27,46,.97), rgba(11,21,36,.97));
  border:1px solid var(--hair);
  box-shadow:var(--shadow-panel);
  transition:border-color .18s var(--ease),transform .18s var(--ease);
}
.panel::after{content:"";position:absolute;inset:7px;border:1px solid rgba(243,239,228,.05);pointer-events:none}
.panel:hover{border-color:rgba(63,224,208,.5)}
.panel--shift{margin-inline-start:clamp(0px,3vw,48px)}
.panel-head{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding-bottom:14px;margin-bottom:18px;border-bottom:1px solid var(--hair);
}
.panel-title{
  margin:0;font-family:var(--font-cond);font-size:15px;font-weight:500;
  letter-spacing:.1em;text-transform:uppercase;color:var(--cyan-soft);
}
.panel-note{font-family:var(--font-mono);font-size:12px;letter-spacing:.02em;color:var(--muted)}
.panel-body{font-size:15.5px;line-height:1.85;color:var(--text)}
.panel-body > :first-child{margin-top:0}
.panel-body > :last-child{margin-bottom:0}

/* 章节锚点轨道 */
.panel-rail{position:sticky;top:calc(var(--header-h) + 28px);align-self:start}
.rail-list{list-style:none;margin:0;padding:0;display:grid;gap:2px;border-left:1px solid var(--hair)}
.rail-link{
  display:flex;align-items:center;gap:10px;
  margin-left:-1px;padding:9px 0 9px 14px;
  border-left:2px solid transparent;
  font-family:var(--font-cond);font-size:13px;letter-spacing:.06em;color:var(--muted);
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.rail-link:hover{
  color:var(--text);border-left-color:rgba(63,224,208,.6);text-decoration:none;
  background:linear-gradient(90deg, rgba(63,224,208,.08), transparent);
}
.rail-link[aria-current="true"]{
  color:var(--cyan-soft);border-left-color:var(--cyan);
  background:linear-gradient(90deg, rgba(63,224,208,.12), transparent);
}

/* ============================================================
   标签 / 状态 / 数据
   ============================================================ */
.label{
  display:inline-block;
  padding:6px 9px;
  background:var(--paper);color:#0B1524;
  border:1px solid rgba(8,17,31,.14);
  box-shadow:3px 3px 0 rgba(4,9,17,.55);
  transform:rotate(-1.4deg);
  font-family:var(--font-mono);font-size:11px;line-height:1;letter-spacing:.1em;
}
.label--amber{background:var(--amber);color:#1B1204}
.label--cyan{background:var(--cyan);color:#04161A}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 9px;border:1px solid rgba(63,224,208,.36);border-radius:2px;
  font-family:var(--font-cond);font-size:12px;letter-spacing:.1em;color:var(--cyan-soft);
  transition:transform .18s var(--ease),border-color .18s var(--ease);
}
.tag:hover{transform:translateY(-2px);border-color:var(--cyan)}
.status{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--muted);
}
.status::before{content:"";display:block;width:6px;height:6px;background:currentColor}
.status--ok{color:var(--ok)}
.status--alert{color:var(--alert)}
.data-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em;color:var(--amber)}

/* ============================================================
   面包屑
   ============================================================ */
.breadcrumb{font-family:var(--font-cond);font-size:12px;letter-spacing:.08em;color:var(--muted)}
.breadcrumb-list{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb-list li{display:flex;align-items:center;gap:8px}
.breadcrumb-list li + li::before{content:"/";color:var(--hair)}
.breadcrumb-link{color:var(--muted)}
.breadcrumb-link:hover{color:var(--cyan-soft);text-decoration:none}
.breadcrumb-current{color:var(--paper)}

/* ============================================================
   图像占位容器（页面阶段放入 img / inline svg）
   ============================================================ */
.figure{
  position:relative;display:block;margin:0;overflow:hidden;
  aspect-ratio:16/9;
  border:1px solid var(--hair);
  background:
    radial-gradient(120% 100% at 12% 0%, rgba(63,224,208,.14), transparent 60%),
    linear-gradient(160deg, rgba(15,27,46,.98), rgba(8,17,31,.98));
  box-shadow:var(--shadow-panel);
}
.figure--wide{aspect-ratio:21/9}
.figure > img,.figure > svg{width:100%;height:100%;object-fit:cover}
.figure::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(0deg, rgba(63,224,208,.08) 0 1px, transparent 1px 4px);
  opacity:.6;
}
.figure-caption{margin:10px 0 0;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--muted)}

/* ============================================================
   标签页（回看窗口切换）
   ============================================================ */
.tabs{display:grid}
.tablist{display:flex;flex-wrap:wrap;gap:2px;border-bottom:1px solid var(--hair);margin-bottom:clamp(16px,2vw,24px)}
.tab{
  appearance:none;padding:9px 16px;
  background:transparent;border:1px solid transparent;border-bottom:0;border-radius:2px 2px 0 0;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--muted);
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.tab:hover{color:var(--text);background:rgba(63,224,208,.07)}
.tab[aria-selected="true"]{background:var(--cyan);border-color:var(--cyan);color:#04161A;font-weight:700}
.tabpanel[hidden]{display:none}
.tabpanel:focus{outline:none}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  background:linear-gradient(180deg, rgba(15,27,46,.92), rgba(8,17,31,1) 58%);
  border-top:1px solid var(--hair);
}
.footer-ridge{
  position:absolute;left:0;right:0;top:0;height:130px;pointer-events:none;opacity:.55;
  background-image:
    repeating-linear-gradient(115deg, rgba(63,224,208,.10) 0 1px, transparent 1px 14px),
    radial-gradient(80% 130% at 18% 0%, rgba(63,224,208,.12), transparent 70%);
  -webkit-mask-image:linear-gradient(180deg, #000, transparent 94%);
  mask-image:linear-gradient(180deg, #000, transparent 94%);
}
.footer-top{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1.5fr) repeat(2,minmax(0,.85fr)) minmax(0,1.4fr);
  gap:clamp(20px,3vw,40px);
  padding-block:clamp(40px,5vw,64px);
}
.footer-brand{min-width:0}
.footer-logo{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-display);font-size:22px;font-weight:700;color:var(--paper);
}
.footer-logo:hover{text-decoration:none;color:var(--cyan-soft)}
.footer-desc{margin:14px 0 18px;max-width:34em;font-size:14.5px;line-height:1.8;color:var(--muted)}
.footer-stamp{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:0}
.footer-col{min-width:0}
.footer-col--contact{min-width:0}
.footer-heading{
  margin:0 0 16px;
  font-family:var(--font-cond);font-size:11px;font-weight:500;
  letter-spacing:.2em;text-transform:uppercase;color:var(--cyan);
}
.footer-list{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.footer-link{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 0;font-size:14px;color:var(--muted);
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-link::before{content:"";display:block;width:0;height:1px;background:var(--cyan);transition:width .18s var(--ease)}
.footer-link:hover{color:var(--cyan-soft);text-decoration:none;transform:translateX(2px)}
.footer-link:hover::before{width:10px}
.footer-link[aria-current="page"]{color:var(--cyan-soft)}

.contact-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.contact-item{
  display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:10px;
  padding-bottom:10px;border-bottom:1px dashed rgba(34,52,79,.9);
}
.contact-item:last-child{border-bottom:0;padding-bottom:0}
.contact-item--block{grid-template-columns:auto minmax(0,1fr);align-items:start}
.contact-key{
  font-family:var(--font-cond);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--muted);
}
.contact-val{font-family:var(--font-mono);font-size:12.5px;line-height:1.6;color:var(--text);word-break:break-all}
.copy-btn{
  appearance:none;padding:5px 9px;
  background:transparent;border:1px solid var(--hair);border-radius:2px;
  font-family:var(--font-cond);font-size:11px;letter-spacing:.1em;color:var(--muted);
  white-space:nowrap;cursor:pointer;
  transition:background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.copy-btn:hover{border-color:var(--cyan);color:var(--cyan-soft);background:rgba(63,224,208,.08)}
.copy-btn.is-copied{background:var(--ok);border-color:var(--ok);color:#04161A}

.footer-bottom{
  position:relative;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding-block:18px 26px;border-top:1px solid var(--hair);
}
.footer-legal{margin:0;max-width:52ch;font-size:12.5px;line-height:1.7;letter-spacing:.02em;color:var(--muted)}
.footer-meta{
  margin:0;display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;color:var(--muted);
}
.footer-icp{color:var(--muted)}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1200px){
  .brand-sub{display:none}
  .stamp-note-pre{display:none}
  .nav-link{padding:9px 8px;font-size:13.5px}
  .site-nav{gap:10px}
}

@media (max-width:1023px){
  .shell{grid-template-columns:1fr}
  .panel-rail{position:static;top:auto}
  .grid--2,.grid--3,.grid--split{grid-template-columns:1fr}

  .header-inner{z-index:95}
  .nav-toggle{display:inline-flex;margin-inline-start:auto}
  .site-nav{
    position:fixed;top:0;right:0;bottom:0;z-index:90;
    width:min(86vw,340px);
    display:flex;flex-direction:column;align-items:stretch;gap:18px;
    margin-inline-start:0;
    padding:calc(var(--header-h) + 22px) 22px 28px;
    background:linear-gradient(180deg, rgba(15,27,46,.99), rgba(8,17,31,.99));
    border-left:1px solid var(--hair);
    box-shadow:-24px 0 60px -40px #000;
    transform:translateX(103%);
    visibility:hidden;
    overflow-y:auto;
    transition:transform .3s var(--ease),visibility .3s var(--ease);
  }
  .site-header[data-open] .site-nav{transform:none;visibility:visible}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{
    display:flex;align-items:center;justify-content:space-between;
    padding:14px 6px;font-size:16px;border-radius:0;border-bottom:1px solid var(--hair);
  }
  .nav-link::after{display:none}
  .nav-cta{margin-top:auto;width:100%}

  .nav-veil{
    display:block;position:fixed;inset:0;z-index:80;
    background:rgba(4,9,17,.72);
    opacity:0;visibility:hidden;
    transition:opacity .3s var(--ease),visibility .3s var(--ease);
  }
  .site-header[data-open] .nav-veil{opacity:1;visibility:visible}

  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:720px){
  .footer-top{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .figure{aspect-ratio:4/3}
  .figure--wide{aspect-ratio:16/9}
}

@media (max-width:560px){
  :root{--header-h:64px}
  .header-inner{height:64px}
  .nav-toggle-label{display:none}
  .brand-mark{font-size:17px}
  .stamp-toggle{padding:5px 8px;font-size:11px;gap:6px}
  .stamp-note{font-size:11px}
  .stamp-pop{left:auto;right:0;width:min(280px,84vw)}
  .label{box-shadow:2px 2px 0 rgba(4,9,17,.55)}
}

/* ============================================================
   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;
    scroll-behavior:auto !important;
  }
  .progress-bar{transition:none}
}