/* ============================================================
   Clash中国官网 · 跨页面组件(components.css)
   钤印装置 / 印谱格线特性表 / Tab / TOC / FAQ / 术语卡
   下载卡 / 文章卡 / callout / 表格 / dl-fab / 文末引导卡
   依赖 base.css 的设计令牌;自身不定义任何颜色值
   ============================================================ */

/* ——— 通用区头(朱砂方记 + 粗宋标题 + 等宽小注)——— */
.sec-head{display:flex;align-items:center;gap:14px;margin-bottom:24px;flex-wrap:wrap}
.sec-head .sq{flex:none;width:10px;height:10px;background:var(--cinnabar)}
.sec-head h2{font-family:var(--font-display);font-size:24px;font-weight:900;letter-spacing:3px}
.sec-head .note{margin-left:auto;font-family:var(--font-mono);font-size:11px;letter-spacing:1px;color:var(--text-muted)}

/* ——— 内页页头 ——— */
.page-head{padding-top:56px;padding-bottom:40px}
.kicker{
  display:flex;
  align-items:center;
  gap:11px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:2.5px;
  color:var(--ochre);
  margin-bottom:22px;
}
.kicker::before{content:"";flex:none;width:8px;height:8px;background:var(--cinnabar)}
.page-head h1{font-size:clamp(34px,4vw,52px);letter-spacing:2px;line-height:1.2}
.page-head .lead{margin-top:16px;font-size:16px;line-height:1.9;max-width:640px;color:var(--text-muted)}

/* ——— 面包屑(博客文章页;与页头留呼吸间距)——— */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:1.5rem 0 2rem;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:1px;
  color:var(--text-muted);
}
.crumbs li{display:flex;align-items:center;gap:10px;min-width:0}
.crumbs li+li::before{content:"/";color:var(--ink-soft)}
.crumbs a:hover{color:var(--cinnabar)}
.crumbs [aria-current]{color:var(--text)}

/* ============================================================
   首页 Hero · 钤印装置(visual-right)
   ============================================================ */
.hero{position:relative;z-index:1;padding-top:32px;padding-bottom:20px;padding-inline:var(--gutter)}
.hero-grid{display:grid;grid-template-columns:600px 1fr;gap:48px;align-items:center}
.hero-grid>*{min-width:0}

.h1-wrap{position:relative}
.hero h1{font-family:var(--font-display);font-weight:900;line-height:1.12;letter-spacing:1px;color:var(--text)}
.h1-l1{display:block;font-size:clamp(42px,5.15vw,74px)}
.h1-l2{display:flex;align-items:center;flex-wrap:wrap;gap:16px;margin-top:14px;font-size:clamp(26px,3.05vw,44px)}
.seal-word{
  display:inline-block;
  background:var(--cinnabar);
  color:var(--paper);
  font-size:clamp(23px,2.65vw,38px);
  line-height:1.25;
  padding:3px 13px 5px;
  letter-spacing:6px;
  filter:url(#miniWobble);
}
.h1-side{
  position:absolute;
  top:10px;right:0;
  writing-mode:vertical-rl;
  font-family:var(--font-display);
  font-size:13px;
  letter-spacing:5px;
  color:var(--text-muted);
}
.side-seal{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:17px;height:17px;
  background:var(--cinnabar);
  color:var(--paper);
  font-size:10px;
  letter-spacing:0;
  margin-top:8px;
}
.hero-desc{margin-top:22px;font-size:16px;line-height:1.9;max-width:548px}
.hero-desc strong{font-weight:700;border-bottom:2px solid var(--ochre);padding-bottom:1px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}

/* 钤印装置:宣纸底 → 纸纹 → 五印蜕 → 大印 → 边款 */
.hero-device{display:flex;flex-direction:column;align-items:center;min-width:0;max-width:100%}
.seal-frame{position:relative;border:1px dashed var(--ink-soft);padding:22px 22px 20px;max-width:100%}
.frame-tag{
  position:absolute;
  top:-8px;left:20px;
  background:var(--paper);
  padding:0 8px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:2px;
  color:var(--ochre);
}
.seal-drop{will-change:transform;max-width:100%}
.big-seal{display:block;width:min(460px,100%);height:auto}
.seal-side{fill:var(--cinnabar-dark)}
.seal-face{fill:var(--cinnabar)}
.seal-inner{fill:none;stroke:var(--paper);stroke-width:5;opacity:.9}
.seal-glyph{fill:var(--paper);font-family:var(--font-display);font-weight:900}
.seal-glyph-latin{font-size:88px;letter-spacing:5px}
.seal-glyph-cjk{font-size:122px;letter-spacing:22px}
.seal-speck{fill:var(--paper)}
.seal-side-text{
  fill:var(--paper);
  opacity:.92;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:3px;
  writing-mode:vertical-rl;
}
.seal-connector{width:1px;height:20px;border-left:1px dashed var(--ink-soft);margin:10px 0}
.mini-row{display:flex;flex-wrap:wrap;justify-content:center;gap:14px}
.mini-seal{
  flex:none;
  width:56px;height:56px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--cinnabar);
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.5px;
  outline:1px solid var(--seal-line);
  outline-offset:-5px;
  filter:url(#miniWobble);
}
.mini-seal:hover{background:var(--cinnabar-dark)}
.mini-seal:active{transform:translateY(1px)}
.mini-seal:focus-visible{outline:2px solid var(--cinnabar);outline-offset:2px}
.mini-caption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:1.5px;
  color:var(--text-muted);
  text-align:center;
}

/* 落印动画:一次性,落定后完全静止 */
@keyframes sealStamp{
  0%{opacity:0;transform:translateY(-72px)}
  52%{opacity:1;transform:translateY(0)}
  70%{transform:translateY(-7px)}
  86%{transform:translateY(0)}
  94%{transform:translateY(-2px)}
  100%{opacity:1;transform:translateY(0)}
}
.seal-drop{animation:sealStamp .88s var(--ease-stamp) .12s both}

/* 版本台账(印谱格线) */
.hero-ledger{
  margin-top:30px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border:1px solid var(--ink);
  background:var(--paper-panel);
}
.ledger-cell{padding:13px 18px 14px;min-width:0}
.ledger-cell+.ledger-cell{border-left:1px solid var(--ink)}
.ledger-label{
  display:block;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:2.5px;
  color:var(--ochre);
  margin-bottom:6px;
}
.ledger-value{font-family:var(--font-mono);font-size:12px;letter-spacing:.4px;overflow-wrap:anywhere}
.ledger-value em{font-style:normal;color:var(--cinnabar);font-weight:700}

/* ============================================================
   核心特性 · 钤印谱格线表(2列×3行共享边,无卡片无圆角)
   ============================================================ */
.feat-peek{position:relative;z-index:1;border-top:1px solid var(--ink);padding-top:20px;padding-inline:var(--gutter)}
.feat-sec{position:relative;z-index:1;border-top:1px solid var(--ink)}
.feat-head{display:flex;align-items:center;gap:14px;margin-bottom:16px;flex-wrap:wrap}
.feat-head .sq{flex:none;width:10px;height:10px;background:var(--cinnabar)}
.feat-head h2{font-family:var(--font-display);font-size:22px;font-weight:900;letter-spacing:3px}
.feat-head .note{margin-left:auto;font-family:var(--font-mono);font-size:11px;letter-spacing:1px;color:var(--text-muted)}
.feat-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  border:1px solid var(--ink);
  background:var(--paper-panel);
}
.feat{
  position:relative;
  display:flex;
  gap:18px;
  padding:24px 26px;
  min-width:0;
  border-top:1px solid var(--ink);
}
.feat:nth-child(-n+2){border-top:0}
.feat:nth-child(even){border-left:1px solid var(--ink)}
.feat::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--cinnabar);
  opacity:0;
  transition:opacity .18s ease;
}
.feat:hover::before{opacity:1}
.feat-seal{
  flex:none;
  width:56px;height:56px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--cinnabar);
  color:var(--paper);
  font-family:var(--font-display);
  font-weight:900;
  font-size:20px;
  letter-spacing:2px;
  padding-left:2px;
  outline:1px solid var(--seal-line);
  outline-offset:-5px;
  filter:url(#miniWobble);
  transition:background .18s ease;
}
.feat:hover .feat-seal{background:var(--cinnabar-dark)}
.feat-body{min-width:0}
.feat h3{font-family:var(--font-display);font-size:17px;font-weight:900;letter-spacing:1px;margin-bottom:8px}
.feat p{font-size:13.5px;line-height:1.85;color:var(--text-muted)}

/* ============================================================
   Tab 切换组件(tabs.js 驱动;印谱格线条)
   ============================================================ */
.tabs{min-width:0}
.tab-list{
  display:flex;
  flex-wrap:wrap;
  border:1px solid var(--ink);
  background:var(--paper-panel-2);
}
.tab{
  position:relative;
  flex:1 1 auto;
  min-width:120px;
  padding:14px 16px;
  font-size:14px;
  font-weight:700;
  letter-spacing:1px;
  text-align:center;
  color:var(--text-muted);
  border-left:1px solid var(--ink);
  white-space:nowrap;
}
.tab:first-child{border-left:0}
.tab::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:3px;
  background:var(--cinnabar);
  opacity:0;
}
.tab:hover{color:var(--text)}
.tab.on,.tab[aria-selected="true"]{background:var(--paper-panel);color:var(--text)}
.tab.on::before,.tab[aria-selected="true"]::before{opacity:1}
.tab-panel{
  border:1px solid var(--ink);
  border-top:0;
  background:var(--paper-panel);
  padding:28px;
  min-width:0;
}
.tab-panel[hidden]{display:none}

/* ============================================================
   长页分类跳转导航(纯锚点,无需 JS)
   ============================================================ */
.toc-tabs{
  display:flex;
  flex-wrap:wrap;
  border:1px solid var(--ink);
  background:var(--paper-panel);
  margin-bottom:36px;
}
.toc-tabs a{
  display:inline-flex;
  align-items:center;
  padding:11px 16px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:1px;
  border-left:1px solid var(--ink);
  white-space:nowrap;
}
.toc-tabs a:first-child{border-left:0}
.toc-tabs a:hover{background:var(--paper-panel-2);color:var(--cinnabar)}

/* ============================================================
   FAQ 折叠项(原生 details,无需 JS)
   ============================================================ */
.faq-list{border:1px solid var(--ink);background:var(--paper-panel)}
.faq-item{border-top:1px solid var(--ink)}
.faq-item:first-child{border-top:0}
.faq-item summary{
  display:flex;
  align-items:center;
  gap:14px;
  padding:17px 22px;
  cursor:pointer;
  font-weight:700;
  font-size:15px;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--paper-panel-2)}
.faq-item .fx{flex:none;position:relative;width:14px;height:14px}
.faq-item .fx::before,.faq-item .fx::after{content:"";position:absolute;background:var(--cinnabar)}
.faq-item .fx::before{left:0;top:6px;width:14px;height:2px}
.faq-item .fx::after{left:6px;top:0;width:2px;height:14px;transition:transform .18s ease}
.faq-item[open] .fx::after{transform:scaleY(0)}
.faq-body{padding:0 22px 20px 50px;font-size:14px;line-height:1.9;color:var(--text-muted)}
.faq-body p{margin:0 0 .8em}
.faq-body p:last-child{margin-bottom:0}

/* ============================================================
   徽章(数据驱动文案,自带宽度防御)
   ============================================================ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:1.5px;
  padding:4px 10px;
  border:1px solid var(--ink);
  white-space:nowrap;
  max-width:100%;
  overflow:hidden;
}
.badge-top{background:var(--cinnabar);border-color:var(--cinnabar);color:var(--paper)}
.badge-rec{color:var(--cinnabar);border-color:var(--cinnabar)}
.badge-eol{color:var(--text-muted);border-color:var(--ink-soft)}
.badge-ok{color:var(--success);border-color:var(--success)}

/* ============================================================
   术语卡
   ============================================================ */
.term-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.term-grid>*{min-width:0}
.term-card{
  position:relative;
  border:1px solid var(--ink);
  background:var(--paper-panel);
  padding:20px 22px;
  min-width:0;
}
.term-card::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--cinnabar);
  opacity:0;
  transition:opacity .18s ease;
}
.term-card:hover::before{opacity:1}
.term-cat{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:2px;
  color:var(--ochre);
  margin-bottom:8px;
  max-width:100%;
  overflow:hidden;
}
.term-card h3{font-size:17px;letter-spacing:1px;margin-bottom:8px}
.term-card p{font-size:13.5px;line-height:1.85;color:var(--text-muted)}

/* ============================================================
   下载客户端卡片(首推/推荐/已停止维护徽章)
   ============================================================ */
.dl-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.dl-grid>*{min-width:0}
.dl-card{
  position:relative;
  display:flex;
  flex-direction:column;
  border:1px solid var(--ink);
  background:var(--paper-panel);
  padding:24px;
  min-width:0;
}
.dl-card::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--cinnabar);
  opacity:0;
  transition:opacity .18s ease;
}
.dl-card:hover::before{opacity:1}
.dl-card-head{display:flex;align-items:flex-start;gap:16px;margin-bottom:14px}
.dl-app-icon{width:56px;height:56px;flex:none}
.dl-card-title{min-width:0}
.dl-name{font-family:var(--font-display);font-size:19px;font-weight:900;letter-spacing:1px}
.dl-sub{font-family:var(--font-mono);font-size:11px;letter-spacing:1px;color:var(--text-muted);margin-top:3px;overflow-wrap:anywhere}
.dl-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.dl-meta{
  display:flex;
  flex-wrap:wrap;
  gap:6px 18px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.5px;
  color:var(--text-muted);
  margin-bottom:12px;
}
.dl-meta b{font-weight:400;color:var(--text)}
.dl-desc{font-size:13.5px;line-height:1.85;color:var(--text-muted);margin-bottom:18px}
.dl-actions{margin-top:auto;display:flex;flex-wrap:wrap;gap:12px}
.dl-ver{font-family:var(--font-mono)}
.dl-ver.has-ver{display:inline}

/* ============================================================
   博客文章卡
   ============================================================ */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.post-grid>*{min-width:0}
.post-card{
  position:relative;
  display:flex;
  flex-direction:column;
  border:1px solid var(--ink);
  background:var(--paper-panel);
  padding:22px 24px;
  min-width:0;
}
.post-card::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--cinnabar);
  opacity:0;
  transition:opacity .18s ease;
}
.post-card:hover::before{opacity:1}
.post-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px 12px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:1px;
  color:var(--text-muted);
  margin-bottom:12px;
}
.post-tag{
  color:var(--ochre);
  border:1px solid var(--ochre);
  padding:2px 8px;
  font-size:10px;
  letter-spacing:1.5px;
  white-space:nowrap;
  max-width:100%;
  overflow:hidden;
}
.post-card h3{font-size:17px;line-height:1.5;letter-spacing:.5px;margin-bottom:10px}
.post-card h3 a:hover{color:var(--cinnabar)}
.post-card p{font-size:13.5px;line-height:1.85;color:var(--text-muted);margin-bottom:16px}
.post-more{margin-top:auto;font-family:var(--font-mono);font-size:12px;letter-spacing:1.5px;color:var(--cinnabar)}
.post-more:hover{color:var(--cinnabar-dark)}

/* ============================================================
   callout 引用块(左侧色条 + 纸面板)
   ============================================================ */
.callout{
  border:1px solid var(--ink);
  border-left:3px solid var(--cinnabar);
  background:var(--paper-panel);
  padding:16px 20px;
  margin:0 0 1.4em;
}
.callout-title{
  display:flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:2px;
  color:var(--cinnabar);
  margin-bottom:8px;
}
.callout-title::before{content:"";flex:none;width:7px;height:7px;background:var(--cinnabar)}
.callout p{font-size:14px;line-height:1.85;margin:0 0 .6em}
.callout p:last-child{margin-bottom:0}
.callout-warn{border-left-color:var(--ochre)}
.callout-warn .callout-title{color:var(--ochre)}
.callout-warn .callout-title::before{background:var(--ochre)}
.callout-ok{border-left-color:var(--success)}
.callout-ok .callout-title{color:var(--success)}
.callout-ok .callout-title::before{background:var(--success)}
.callout-err{border-left-color:var(--error)}
.callout-err .callout-title{color:var(--error)}
.callout-err .callout-title::before{background:var(--error)}

/* ============================================================
   数据表格(台账格线;裸表防御自带)
   ============================================================ */
.table-wrap{
  border:1px solid var(--ink);
  max-width:100%;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
}
.data-table{width:100%;border-collapse:collapse;font-size:13.5px;background:var(--paper-panel)}
.data-table th{
  font-family:var(--font-mono);
  font-weight:400;
  font-size:11px;
  letter-spacing:2px;
  color:var(--ochre);
  text-align:left;
  padding:12px 16px;
  background:var(--paper-panel-2);
  border-bottom:1px solid var(--ink);
  white-space:nowrap;
}
.data-table td{padding:12px 16px;border-top:1px solid var(--ink-faint);vertical-align:top}
.data-table tbody tr:first-child td{border-top:0}
.data-table .mono,td.mono{font-family:var(--font-mono);font-size:12.5px}
/* 文章页裸表防御:无 .table-wrap 包裹时自身横滑,绝不撑破页面 */
.prose>.data-table{
  display:block;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  max-width:100%;
  min-width:0;
}

/* ============================================================
   文末下载引导卡(博客文章页约定)
   ============================================================ */
.post-cta{
  position:relative;
  border:1px solid var(--ink);
  background:var(--paper-panel);
  padding:28px;
  display:flex;
  flex-direction:column;
  gap:14px;
  margin:2.5em 0;
}
.post-cta::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--cinnabar);
}
.post-cta h2{font-size:20px;letter-spacing:2px}
.post-cta p{font-size:14px;line-height:1.85;color:var(--text-muted)}
.post-cta .cta-row{display:flex;flex-wrap:wrap;gap:12px}

/* ============================================================
   右下角常驻下载浮层(博客文章页必放;主页面按抽签不放)
   ============================================================ */
.dl-fab{
  position:fixed;
  right:16px;
  bottom:16px;
  z-index:70;
  display:inline-flex;
  align-items:center;
  gap:10px;
  background:var(--cinnabar);
  color:var(--paper);
  border:1px solid var(--ink);
  padding:13px 18px;
  font-size:13px;
  font-weight:700;
  letter-spacing:2px;
  max-width:calc(100vw - 32px);
}
.dl-fab:hover{background:var(--cinnabar-dark)}
.dl-fab:active{transform:translateY(1px)}
.dl-fab svg{width:15px;height:15px;flex:none}
.fab-demo{position:relative;height:110px;border:1px dashed var(--ink-soft);background:var(--paper-panel)}
.fab-demo .dl-fab{position:absolute;right:16px;bottom:16px}

/* ============================================================
   色板(设计预览/文档用)
   ============================================================ */
.swatch-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px}
.swatch{border:1px solid var(--ink);background:var(--paper-panel);min-width:0}
.swatch-color{height:64px;border-bottom:1px solid var(--ink)}
.swatch-meta{padding:10px 12px;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.5px;color:var(--text-muted);line-height:1.7}
.swatch-meta b{display:block;font-weight:400;color:var(--text);overflow-wrap:anywhere}
.sw-paper{background:var(--paper)}
.sw-paper-panel{background:var(--paper-panel)}
.sw-paper-panel-2{background:var(--paper-panel-2)}
.sw-ink{background:var(--ink)}
.sw-cinnabar{background:var(--cinnabar)}
.sw-cinnabar-dark{background:var(--cinnabar-dark)}
.sw-text{background:var(--text)}
.sw-text-muted{background:var(--text-muted)}
.sw-ochre{background:var(--ochre)}
.sw-success{background:var(--success)}
.sw-error{background:var(--error)}

/* ——— 演示辅助 ——— */
.demo-box{border:1px solid var(--ink);background:var(--paper-panel);padding:28px;min-width:0}
.demo-note{font-family:var(--font-mono);font-size:11px;letter-spacing:1.5px;color:var(--text-muted);margin-top:12px}

/* ============================================================
   组件响应式
   ============================================================ */
@media (max-width:1180px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .h1-side{display:none}
  .hero-desc{max-width:none}
}
@media (max-width:900px){
  .post-grid{grid-template-columns:1fr 1fr}
  .term-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .hero-ledger{grid-template-columns:1fr 1fr}
  .ledger-cell:nth-child(3){border-left:0}
  .ledger-cell:nth-child(n+3){border-top:1px solid var(--ink)}
  .dl-grid{grid-template-columns:1fr}
}
@media (max-width:720px){
  .feat-grid{grid-template-columns:1fr}
  .feat{flex-direction:column;gap:14px;border-top:1px solid var(--ink)}
  .feat:nth-child(-n+2){border-top:1px solid var(--ink)}
  .feat:first-child{border-top:0}
  .feat:nth-child(even){border-left:0}
}
@media (max-width:640px){
  .hero{padding-top:24px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .seal-frame{padding:14px 14px 13px}
  .tab-list{flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch}
  .tab{flex:none;min-width:104px}
  .tab-panel{padding:20px}
  .toc-tabs{flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch}
  .post-grid{grid-template-columns:1fr}
  .term-grid{grid-template-columns:1fr}
  .faq-body{padding-left:22px}
  .post-cta{padding:22px}
}

/* ——— 减少动态偏好:落印直接呈现终态 ——— */
@media (prefers-reduced-motion:reduce){
  .seal-drop{animation:none}
  .feat::before,.feat-seal,.term-card::before,.dl-card::before,.post-card::before{transition:none}
  .faq-item .fx::after{transition:none}
}