/* ============================================================
   9393网页版 · /assets/site.css
   共享外壳：reset / 令牌 / 排版 / 命令栏页头 / 档案册页脚
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --ink-950:#081826;
  --ink-900:#0B1B2B;
  --ink-800:#12263A;
  --paper-050:#F6F2EA;
  --paper-100:#E8E1D3;
  --signal:#FF6A2A;
  --celadon:#5FBFA5;
  --cyan:#2FD4C8;
  --amber:#F2B544;
  --violet:#6C5CE7;
  --slate:#44576B;
  --white:#FFFFFF;

  --wrap:1280px;
  --edge:clamp(16px,3vw,32px);
  --pad-edge:max(var(--edge),calc((100% - var(--wrap)) / 2));

  --line-dark:rgba(255,255,255,.13);
  --line-dark-soft:rgba(255,255,255,.07);
  --line-light:rgba(8,24,38,.13);

  --font-display:"Barlow Condensed","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --t:150ms;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,figcaption,dl,dd,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img,svg,video{display:block;max-width:100%;}
a{color:inherit;}
button{font:inherit;color:inherit;}
table{border-collapse:collapse;}
input,select,textarea{font:inherit;}
::selection{background:rgba(47,212,200,.35);color:var(--ink-950);}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px;border-radius:2px;}

/* ---------- 3. 基础排版 ---------- */
body{
  background:var(--paper-050);
  color:var(--ink-950);
  font-family:var(--font-body);
  font-size:clamp(15.5px,.28vw + 14.6px,17px);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  min-height:100vh;
}
h1,h2,h3,h4{line-height:1.25;font-weight:700;}
p{max-width:76ch;}
.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.06em;
}
.display{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(2rem,4vw,3.4rem);
  line-height:1.02;
  letter-spacing:-.015em;
}
.lede{
  font-size:clamp(15.5px,1.3vw,18px);
  line-height:1.78;
  color:var(--slate);
  max-width:62ch;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.2em;
  color:var(--slate);
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--signal);}
.divider{height:1px;border:0;background:var(--line-light);margin-block:clamp(24px,4vw,44px);}

/* ---------- 4. 容器与栅格 ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--edge);
}
.section{padding-block:clamp(40px,6vw,84px);}
.section--tight{padding-block:clamp(26px,4vw,50px);}
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2vw,24px);
}
.col-3{grid-column:span 3;}
.col-4{grid-column:span 4;}
.col-5{grid-column:span 5;}
.col-6{grid-column:span 6;}
.col-7{grid-column:span 7;}
.col-8{grid-column:span 8;}
.col-12{grid-column:span 12;}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 18px;
  border:1px solid transparent;
  border-radius:2px;
  font-family:var(--font-body);
  font-size:14.5px;
  font-weight:600;
  letter-spacing:.04em;
  line-height:1.2;
  text-decoration:none;
  cursor:pointer;
  transition:background-color var(--t) var(--ease),color var(--t) var(--ease),
             border-color var(--t) var(--ease),transform var(--t) var(--ease);
}
.btn:hover{transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn-signal{background:var(--signal);color:#0A1520;}
.btn-signal:hover{background:#FF8047;color:#0A1520;}
.btn-ghost{background:transparent;color:var(--white);border-color:rgba(255,255,255,.3);}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);}
.btn-line{background:transparent;color:var(--ink-950);border-color:rgba(8,24,38,.24);}
.btn-line:hover{background:var(--ink-950);border-color:var(--ink-950);color:var(--white);}

/* ---------- 6. 跳过链接 ---------- */
.skip{
  position:fixed;
  top:10px;
  left:10px;
  z-index:300;
  padding:10px 16px;
  background:var(--signal);
  color:#0A1520;
  font-size:14px;
  font-weight:700;
  text-decoration:none;
  border-radius:2px;
  transform:translateY(-180%);
  transition:transform var(--t) var(--ease);
}
.skip:focus,.skip:focus-visible{transform:translateY(0);}

/* ---------- 7. 页头：紧凑命令栏 ---------- */
.site-head{
  position:sticky;
  top:0;
  z-index:90;
  background:var(--ink-950);
  color:var(--white);
  border-bottom:1px solid var(--line-dark);
  box-shadow:0 18px 34px -30px rgba(0,0,0,.9);
}
.head-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:rgba(255,255,255,.07);
  overflow:hidden;
  pointer-events:none;
  z-index:2;
}
.progress-bar{
  display:block;
  width:100%;
  height:100%;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .1s linear;
}

/* 档案索引带 */
.head-rail{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-block:7px;
  padding-inline:var(--pad-edge);
  background:var(--ink-900);
  border-bottom:1px solid var(--line-dark-soft);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:rgba(255,255,255,.55);
}
.rail-label{display:inline-flex;align-items:center;gap:9px;max-width:none;}
.rail-label::before{
  content:"";
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--celadon);
  box-shadow:0 0 0 3px rgba(95,191,165,.16);
}
.rail-meta{display:inline-flex;align-items:center;gap:16px;}
.rail-meta .mono{color:rgba(255,255,255,.82);}
.rail-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 8px;
  color:rgba(255,255,255,.8);
  text-decoration:none;
  border:1px solid rgba(255,255,255,.18);
  border-radius:2px;
  transition:color var(--t) var(--ease),border-color var(--t) var(--ease),background-color var(--t) var(--ease);
}
.rail-link:hover{color:var(--white);border-color:rgba(47,212,200,.65);background:rgba(47,212,200,.1);}
.star{color:var(--amber);font-size:12px;line-height:1;}

/* 主命令栏 */
.head-main{
  display:flex;
  align-items:center;
  gap:clamp(14px,2.4vw,36px);
  padding-block:12px;
  padding-inline:var(--pad-edge);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  text-decoration:none;
  color:var(--white);
}
.brand-mark{
  display:grid;
  place-items:center;
  width:42px;
  height:42px;
  background:var(--ink-800);
  border:1px solid rgba(95,191,165,.4);
  color:var(--white);
  font-family:var(--font-mono);
  font-size:16px;
  font-weight:700;
  letter-spacing:.02em;
  clip-path:polygon(0 0,100% 0,100% 66%,70% 100%,0 100%);
}
.brand-text strong{
  display:block;
  font-family:var(--font-display);
  font-size:19px;
  font-weight:700;
  letter-spacing:.04em;
  line-height:1.1;
}
.brand-text em{
  display:block;
  margin-top:2px;
  font-family:var(--font-mono);
  font-style:normal;
  font-size:10.5px;
  letter-spacing:.18em;
  color:rgba(255,255,255,.55);
}

/* 移动菜单按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  margin-left:auto;
  padding:9px 12px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.22);
  border-radius:3px;
  color:var(--white);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  cursor:pointer;
  transition:background-color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.nav-toggle:hover{background:rgba(47,212,200,.12);border-color:rgba(47,212,200,.5);}
.nav-toggle-bars{
  position:relative;
  display:block;
  width:18px;
  height:12px;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:2px;
  background:currentColor;
  transition:transform var(--t) var(--ease),top var(--t) var(--ease),bottom var(--t) var(--ease);
}
.nav-toggle-bars::before{top:1px;}
.nav-toggle-bars::after{bottom:1px;}
.nav-toggle-label{white-space:nowrap;}
.site-head[data-open="true"] .nav-toggle{background:rgba(255,106,42,.16);border-color:rgba(255,106,42,.6);}
.site-head[data-open="true"] .nav-toggle-bars::before{top:5px;transform:rotate(45deg);}
.site-head[data-open="true"] .nav-toggle-bars::after{bottom:5px;transform:rotate(-45deg);}

/* 导航 */
.cmdbar{
  display:flex;
  align-items:center;
  gap:clamp(10px,2vw,26px);
  margin-left:auto;
}
.cmdbar-list{
  display:flex;
  align-items:center;
  gap:2px;
}
.cmdbar-list a{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  padding:8px 11px 10px;
  border-radius:3px;
  color:rgba(255,255,255,.75);
  text-decoration:none;
  transition:color var(--t) var(--ease),background-color var(--t) var(--ease);
}
.cmdbar-list a:hover{color:var(--white);background:rgba(255,255,255,.07);}
.idx{
  font-family:var(--font-mono);
  font-size:10px;
  font-variant-numeric:tabular-nums;
  letter-spacing:.06em;
  color:rgba(95,191,165,.75);
}
.cmdbar-list a:hover .idx{color:var(--cyan);}
.lbl{font-size:14.5px;font-weight:500;letter-spacing:.02em;}
.cmdbar-list a[aria-current="page"]{color:var(--white);background:rgba(47,212,200,.1);}
.cmdbar-list a[aria-current="page"] .idx{color:var(--cyan);}
.cmdbar-list a[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:11px;
  right:11px;
  bottom:2px;
  height:2px;
  background:var(--signal);
}
.cmdbar-cta{margin-left:6px;}

/* 面包屑条 */
.crumb{
  display:flex;
  align-items:center;
  gap:9px;
  padding-block:6px;
  padding-inline:var(--pad-edge);
  background:var(--ink-950);
  border-top:1px solid var(--line-dark-soft);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:rgba(255,255,255,.42);
}
.crumb a{color:rgba(255,255,255,.62);text-decoration:none;transition:color var(--t) var(--ease);}
.crumb a:hover{color:var(--cyan);}
.crumb-sep{color:rgba(255,255,255,.26);}
.crumb-current{color:var(--celadon);}

/* ---------- 8. 页脚：档案册层次 ---------- */
.site-foot{
  position:relative;
  background:var(--ink-950);
  color:rgba(255,255,255,.72);
  border-top:1px solid var(--line-dark);
}
.foot-top{
  display:grid;
  grid-template-columns:1.5fr repeat(3,minmax(0,1fr));
  gap:clamp(24px,3vw,44px);
  padding-block:clamp(36px,5vw,60px) clamp(26px,3vw,38px);
  padding-inline:var(--pad-edge);
}
.foot-mark{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(1.6rem,3vw,2.3rem);
  line-height:1.05;
  letter-spacing:-.01em;
  color:var(--white);
  max-width:none;
}
.foot-tag{
  margin-top:6px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--celadon);
  max-width:none;
}
.foot-line{
  margin-top:14px;
  font-size:13.5px;
  line-height:1.72;
  color:rgba(255,255,255,.6);
  max-width:30ch;
}
.foot-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:18px;
  padding:6px 10px;
  border:1px solid rgba(95,191,165,.42);
  border-radius:2px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:rgba(255,255,255,.82);
  max-width:none;
}
.foot-pill::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--celadon);}
.foot-cta{margin-top:20px;}
.foot-col{min-width:0;}
.foot-col-title{
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line-dark);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.18em;
  color:rgba(255,255,255,.5);
}
.foot-col-title::before{content:"";width:12px;height:1px;background:var(--signal);}
.foot-links li + li{margin-top:2px;}
.foot-links a{
  display:inline-flex;
  align-items:center;
  gap:0;
  padding:6px 0;
  color:rgba(255,255,255,.78);
  font-size:14px;
  text-decoration:none;
  transition:color var(--t) var(--ease);
}
.foot-links a::before{
  content:"";
  width:0;
  height:1px;
  background:var(--cyan);
  transition:width var(--t) var(--ease),margin-right var(--t) var(--ease);
}
.foot-links a:hover{color:var(--white);}
.foot-links a:hover::before{width:12px;margin-right:7px;}

.foot-contact{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(16px,2vw,28px);
  padding-block:clamp(20px,3vw,28px);
  padding-inline:var(--pad-edge);
  background:var(--ink-900);
  border-top:1px solid var(--line-dark);
  border-bottom:1px solid var(--line-dark);
}
.contact-item{min-width:0;}
.contact-key{
  display:block;
  margin-bottom:4px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.16em;
  color:rgba(255,255,255,.42);
}
.contact-val{
  display:block;
  font-size:14px;
  line-height:1.6;
  color:var(--white);
  overflow-wrap:anywhere;
}
.contact-note{
  grid-column:1 / -1;
  padding-top:12px;
  border-top:1px dashed rgba(255,255,255,.12);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.02em;
  line-height:1.7;
  color:rgba(255,255,255,.52);
  max-width:none;
}
.foot-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  padding-block:18px;
  padding-inline:var(--pad-edge);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:rgba(255,255,255,.45);
}
.legal-copy{max-width:none;}
.legal-links{display:flex;flex-wrap:wrap;gap:18px;}
.legal-links a{
  color:rgba(255,255,255,.62);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.legal-links a:hover{color:var(--cyan);border-color:rgba(47,212,200,.6);}
.legal-icp{max-width:none;color:rgba(255,255,255,.38);}

/* 返回顶部 */
.backtop{
  position:fixed;
  right:clamp(14px,3vw,28px);
  bottom:clamp(14px,3vw,28px);
  z-index:80;
  display:grid;
  place-items:center;
  gap:2px;
  width:56px;
  height:56px;
  padding:4px;
  background:rgba(11,27,43,.86);
  border:1px solid rgba(47,212,200,.5);
  border-radius:3px;
  color:var(--white);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity var(--t) var(--ease),transform var(--t) var(--ease),
             border-color var(--t) var(--ease),background-color var(--t) var(--ease),
             visibility var(--t) var(--ease);
}
.backtop[data-visible="true"]{opacity:1;visibility:visible;transform:none;}
.backtop:hover{border-color:var(--cyan);background:rgba(18,38,58,.95);}
.backtop-arrow{font-size:15px;line-height:1;color:var(--cyan);}
.backtop-text{
  font-family:var(--font-mono);
  font-size:9.5px;
  letter-spacing:.12em;
  color:rgba(255,255,255,.72);
}

/* ---------- 9. 通用内容组件 ---------- */
.card{
  position:relative;
  padding:clamp(18px,2.4vw,26px);
  background:var(--white);
  border:1px solid var(--line-light);
  border-radius:2px;
}
.card--ink{
  background:var(--ink-900);
  border-color:var(--line-dark);
  color:rgba(255,255,255,.82);
}
.card--ink h2,.card--ink h3{color:var(--white);}
.panel{
  background:rgba(255,255,255,.72);
  border:1px solid rgba(8,24,38,.1);
  border-radius:2px;
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 9px;
  border:1px solid rgba(8,24,38,.16);
  border-radius:2px;
  background:rgba(255,255,255,.6);
  color:var(--slate);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  line-height:1.5;
}
.tag--celadon{color:#1C6A56;border-color:rgba(95,191,165,.55);background:rgba(95,191,165,.16);}
.tag--amber{color:#7A5306;border-color:rgba(242,181,68,.6);background:rgba(242,181,68,.18);}
.tag--violet{color:#3B2FBF;border-color:rgba(108,92,231,.45);background:rgba(108,92,231,.12);}
.tag--signal{color:#A13200;border-color:rgba(255,106,42,.5);background:rgba(255,106,42,.14);}

.breadcrumb{
  padding-block:14px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--slate);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb a{
  color:var(--slate);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.breadcrumb a:hover{color:var(--ink-950);border-color:var(--cyan);}
.breadcrumb li + li::before{content:"/";color:rgba(8,24,38,.3);}
.breadcrumb [aria-current="page"]{color:var(--ink-950);}

/* 对照表 */
.table-scroll{
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  border:1px solid var(--line-light);
  background:var(--white);
}
.data-table{
  width:100%;
  min-width:640px;
  font-size:14.5px;
}
.data-table th,
.data-table td{
  padding:12px 14px;
  text-align:left;
  vertical-align:top;
  border-bottom:1px solid rgba(8,24,38,.1);
}
.data-table thead th{
  position:sticky;
  top:0;
  z-index:1;
  background:var(--paper-100);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.12em;
  color:var(--slate);
}
.data-table tbody tr:hover{background:rgba(47,212,200,.07);}
.data-table td[data-state="ok"]{background:rgba(95,191,165,.14);color:#1C6A56;}
.data-table td[data-state="beta"]{background:rgba(242,181,68,.14);color:#7A5306;}

/* 章节跟随目录 */
.toc{
  padding-left:14px;
  border-left:2px solid rgba(8,24,38,.12);
}
.toc-title{
  margin-bottom:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--slate);
}
.toc a{
  position:relative;
  display:block;
  padding:6px 0;
  font-size:13.5px;
  line-height:1.5;
  color:var(--slate);
  text-decoration:none;
  transition:color var(--t) var(--ease);
}
.toc a:hover{color:var(--ink-950);}
.toc a[aria-current="true"]{color:var(--ink-950);font-weight:600;}
.toc a[aria-current="true"]::before{
  content:"";
  position:absolute;
  left:-16px;
  top:50%;
  width:2px;
  height:16px;
  transform:translateY(-50%);
  background:var(--signal);
}

/* ---------- 10. 图片 / 线框设备容器 ---------- */
.media{
  position:relative;
  margin:0;
  overflow:hidden;
  border:1px solid var(--line-light);
  border-radius:2px;
  background:var(--ink-900);
}
.media-frame{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16 / 9;
  overflow:hidden;
}
.media-frame img{width:100%;height:100%;object-fit:cover;}
.media-body{
  padding:12px 14px;
  background:var(--ink-900);
  color:rgba(255,255,255,.74);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
}
.media-cap{
  margin-top:10px;
  font-size:12.5px;
  line-height:1.6;
  color:var(--slate);
  max-width:60ch;
}
.media--device{
  background-color:var(--ink-900);
  background-image:
    linear-gradient(rgba(47,212,200,.14) 1px,transparent 1px),
    linear-gradient(90deg,rgba(47,212,200,.14) 1px,transparent 1px);
  background-size:24px 24px;
  border-color:rgba(47,212,200,.32);
  border-radius:20px;
}
.media--grid{
  background-color:var(--paper-100);
  background-image:
    linear-gradient(rgba(8,24,38,.09) 1px,transparent 1px),
    linear-gradient(90deg,rgba(8,24,38,.09) 1px,transparent 1px);
  background-size:32px 32px;
}
.media--shot{background:var(--ink-800);border-color:rgba(255,255,255,.16);}
.ratio-16x9 .media-frame,.ratio-16x9{aspect-ratio:16 / 9;}
.ratio-4x3 .media-frame,.ratio-4x3{aspect-ratio:4 / 3;}
.ratio-1x1 .media-frame,.ratio-1x1{aspect-ratio:1 / 1;}
.ratio-9x16 .media-frame,.ratio-9x16{aspect-ratio:9 / 16;}

/* ---------- 11. 进场动效 ---------- */
.has-js [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
.has-js [data-reveal][data-shown="true"]{opacity:1;transform:none;}

/* ---------- 12. 响应式 ---------- */
@media (max-width:1060px){
  .nav-toggle{display:inline-flex;}
  .cmdbar{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:14px;
    margin-left:0;
    padding:14px var(--edge) 18px;
    background:rgba(11,27,43,.98);
    border-bottom:1px solid var(--line-dark);
    box-shadow:0 26px 42px -32px #000;
    max-height:72vh;
    overflow-y:auto;
  }
  .site-head[data-open="true"] .cmdbar{display:flex;}
  .cmdbar-list{
    gap:6px;
    overflow-x:auto;
    padding-bottom:4px;
    scrollbar-width:thin;
    scroll-snap-type:x proximity;
  }
  .cmdbar-list li{flex:0 0 auto;scroll-snap-align:start;}
  .cmdbar-list a{
    padding:10px 12px;
    border:1px solid rgba(255,255,255,.12);
    white-space:nowrap;
  }
  .cmdbar-list a[aria-current="page"]::after{left:12px;right:12px;bottom:4px;}
  .cmdbar-cta{align-self:flex-start;margin-left:0;}
}

@media (max-width:980px){
  .grid-12{grid-template-columns:1fr;}
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-12{grid-column:1 / -1;}
  .foot-top{grid-template-columns:repeat(2,minmax(0,1fr));}
  .foot-id{grid-column:1 / -1;}
}

@media (max-width:900px){
  .head-rail{display:none;}
  .foot-contact{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (max-width:620px){
  .head-main{padding-block:10px;}
  .brand-mark{width:36px;height:36px;font-size:14px;}
  .brand-text strong{font-size:17px;}
  .brand-text em{font-size:9.5px;letter-spacing:.14em;}
  .nav-toggle{padding:8px 10px;font-size:10px;}
  .crumb{font-size:10px;letter-spacing:.06em;gap:7px;}
  .foot-top{grid-template-columns:1fr;gap:26px;}
  .foot-contact{grid-template-columns:1fr;}
  .foot-legal{flex-direction:column;align-items:flex-start;}
  .legal-links{gap:14px;}
  .backtop{width:48px;height:48px;}
  .backtop-arrow{font-size:13px;}
}

/* ---------- 13. 减少动态 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .has-js [data-reveal]{opacity:1;transform:none;}
  .btn:hover{transform:none;}
}