:root{
  --ink:#06110F;
  --navy:#0B1B2B;
  --glass:#10261F;
  --cyan:#22E0D0;
  --amber:#FFA23A;
  --text:#C7D3D0;
  --muted:#7E918C;
  --silver:#B9BFC6;
  --white:#F4F7F6;
  --line:#3A4A57;

  --rail-w:88px;
  --header-h:76px;
  --header-h-scrolled:60px;

  --font-sans:"Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;

  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:240ms;

  --w-max:1280px;
  --pad-x:clamp(20px,4vw,56px);
  --gap:24px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body,figure,blockquote,dl,dd,ol,ul,p,h1,h2,h3,h4,h5,h6,fieldset,pre{margin:0;padding:0}
ol,ul{list-style:none}
h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
img,svg,video{display:block;max-width:100%}
table{border-collapse:collapse;width:100%}
hr{border:0;border-top:1px solid var(--line)}

@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth}
}

body{
  min-height:100vh;
  padding-top:var(--header-h);
  padding-left:var(--rail-w);
  overflow-x:hidden;
  background-color:var(--ink);
  background-image:
    linear-gradient(to right,rgba(58,74,87,.16) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(58,74,87,.16) 1px,transparent 1px);
  background-size:88px 88px;
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  font-weight:400;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}

#main-content{scroll-margin-top:120px}

::selection{background:rgba(34,224,208,.24);color:var(--white)}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
  border-radius:1px;
}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:0;
  left:var(--rail-w);
  z-index:200;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 22px;
  transform:translateY(-120%);
  background:var(--cyan);
  color:#04100E;
  font-size:12px;
  letter-spacing:.16em;
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 左侧品牌轨道 ---------- */
.rail{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--rail-w);
  z-index:60;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:20px;
  padding:18px 0 24px;
  background:var(--navy);
  border-right:1px solid var(--line);
}
.rail__brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  min-width:44px;
}
.rail__brand-mark{
  position:relative;
  width:22px;height:22px;
  border:1px solid var(--silver);
}
.rail__brand-mark::before{
  content:"";
  position:absolute;
  left:50%;top:3px;bottom:3px;
  width:1px;
  background:var(--cyan);
  transform:translateX(-50%);
}
.rail__brand-mark::after{
  content:"";
  position:absolute;
  top:50%;left:3px;right:3px;
  height:1px;
  background:var(--cyan);
  transform:translateY(-50%);
}
.rail__brand-text{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.28em;
  color:var(--silver);
}
.rail__nav{flex:1 1 auto;width:100%}
.rail__list{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:4px;
}
.rail__item{position:relative}
.rail__link{
  position:relative;
  display:grid;
  place-items:center;
  width:44px;height:44px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--muted);
  transition:color .18s var(--ease);
}
.rail__link::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:9px;height:1px;
  background:currentColor;
  opacity:.45;
  transform:translateY(-50%);
  transition:width .18s var(--ease),opacity .18s var(--ease);
}
.rail__link:hover{color:var(--white)}
.rail__link:hover::before{width:16px;opacity:.9}
.rail__link[aria-current="location"]{color:var(--cyan)}
.rail__link[aria-current="location"]::before{width:18px;background:var(--cyan);opacity:1}
.rail__link::after{
  content:attr(data-label);
  position:absolute;
  left:calc(100% + 10px);
  top:50%;
  z-index:5;
  transform:translateY(-50%);
  padding:6px 10px;
  white-space:nowrap;
  background:rgba(11,27,43,.97);
  border:1px solid var(--line);
  font-family:var(--font-sans);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--text);
  opacity:0;
  pointer-events:none;
  transition:opacity .18s var(--ease);
}
.rail__link:hover::after,
.rail__link:focus-visible::after{opacity:1}
.rail__num{position:relative;z-index:1}
.rail__progress{
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:rgba(58,74,87,.7);
}
.rail__progress-bar{
  display:block;
  width:100%;height:100%;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .1s linear;
}

/* ---------- 顶部导航条 ---------- */
.site-header{position:relative}
.header-bar{
  position:fixed;
  top:0;
  left:var(--rail-w);
  right:0;
  z-index:50;
  height:var(--header-h);
  background:linear-gradient(to bottom,rgba(6,17,15,.74),rgba(6,17,15,0));
  border-bottom:1px solid transparent;
  transition:height var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),backdrop-filter var(--dur) var(--ease);
}
.site-header[data-scrolled] .header-bar{
  height:var(--header-h-scrolled);
  background-color:rgba(11,27,43,.94);
  border-bottom-color:var(--line);
  -webkit-backdrop-filter:blur(14px) saturate(1.15);
  backdrop-filter:blur(14px) saturate(1.15);
}
.header-bar__inner{
  display:flex;
  align-items:center;
  gap:clamp(14px,2vw,34px);
  height:100%;
  width:100%;
  max-width:var(--w-max);
  margin-inline:auto;
  padding-inline:clamp(16px,3vw,40px);
}

/* 品牌 */
.brand{
  display:flex;
  align-items:center;
  gap:14px;
  flex:0 0 auto;
}
.brand__link{
  display:flex;
  align-items:center;
  gap:12px;
  min-height:44px;
}
.brand__mark{
  position:relative;
  flex:0 0 24px;
  width:24px;height:24px;
  border:1px solid var(--silver);
  transition:border-color .18s var(--ease);
}
.brand__link:hover .brand__mark{border-color:var(--cyan)}
.brand__mark i{position:absolute;background:var(--cyan)}
.brand__mark i:nth-child(1){left:50%;top:3px;bottom:3px;width:1px;transform:translateX(-50%);opacity:.55}
.brand__mark i:nth-child(2){top:50%;left:3px;right:3px;height:1px;transform:translateY(-50%);opacity:.55}
.brand__mark i:nth-child(3){right:-2px;bottom:-2px;width:5px;height:5px;background:var(--amber)}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__name{font-size:17px;letter-spacing:.22em;color:var(--white)}
.brand__note{font-size:10px;letter-spacing:.2em;color:var(--muted)}
.brand__index{
  padding-left:14px;
  border-left:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--muted);
  white-space:nowrap;
}

/* 主导航 */
.primary-nav{
  flex:1 1 auto;
  display:flex;
  justify-content:center;
  min-width:0;
}
.nav-list{
  display:flex;
  align-items:center;
  gap:clamp(8px,1.5vw,24px);
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 2px;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--silver);
  white-space:nowrap;
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:8px;
  height:1px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--white)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--cyan)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}

/* 右侧动作区 */
.header-actions{
  display:flex;
  align-items:center;
  gap:14px;
  flex:0 0 auto;
  margin-left:auto;
}

.subbar{position:relative}
.subbar__link{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:2px;
  background:var(--glass);
  color:var(--text);
  font-size:12.5px;
  letter-spacing:.1em;
  white-space:nowrap;
  transition:border-color .18s var(--ease),color .18s var(--ease),background-color .18s var(--ease);
}
.subbar__link:hover,
.subbar:focus-within .subbar__link{
  border-color:var(--cyan);
  color:var(--white);
  background:rgba(34,224,208,.08);
}
.subbar__caret{
  width:5px;height:5px;
  border-right:1px solid var(--muted);
  border-bottom:1px solid var(--muted);
  transform:rotate(45deg) translateY(-2px);
}
.subbar__label--short{display:none}
.subbar__menu{
  position:absolute;
  top:100%;
  right:0;
  z-index:20;
  min-width:196px;
  display:none;
  flex-direction:column;
  gap:2px;
  padding:8px;
  background:rgba(11,27,43,.98);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.subbar:focus-within .subbar__menu{display:flex}
@media (hover:hover){
  .subbar:hover .subbar__menu{display:flex}
}
.subbar__menu a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:0 12px;
  font-size:13px;
  color:var(--text);
  transition:background-color .18s var(--ease),color .18s var(--ease);
}
.subbar__menu a:hover{background:rgba(34,224,208,.1);color:var(--white)}

.utility{
  display:flex;
  align-items:center;
  gap:16px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--muted);
}
.utility li{position:relative;white-space:nowrap}
.utility li+li::before{
  content:"";
  position:absolute;
  left:-9px;top:50%;
  width:3px;height:1px;
  background:var(--line);
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  min-height:44px;
  min-width:44px;
  padding:0 12px;
  border:1px solid var(--line);
  border-radius:2px;
  color:var(--silver);
  font-size:12px;
  letter-spacing:.14em;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--white)}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:16px;height:1px;
  background:currentColor;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;height:1px;
  background:currentColor;
  transition:transform .2s var(--ease);
}
.nav-toggle__bars::before{top:-5px}
.nav-toggle__bars::after{top:5px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-5px) rotate(-45deg)}

/* ---------- 容器与排版 ---------- */
.wrap{
  width:100%;
  max-width:var(--w-max);
  margin-inline:auto;
  padding-inline:var(--pad-x);
}
.section{
  position:relative;
  padding-block:clamp(48px,7vw,104px);
}
.section--tight{padding-block:clamp(32px,4vw,56px)}
.stack>*+*{margin-top:var(--gap)}
.tagwall{display:flex;flex-wrap:wrap;gap:8px}
.media-grid{
  display:grid;
  gap:var(--gap);
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
}
.split{display:grid;gap:var(--gap)}
.split--5-7{grid-template-columns:5fr 7fr}
.split--4-8{grid-template-columns:4fr 8fr}
.split--7-5{grid-template-columns:7fr 5fr}
@media (max-width:900px){
  .split--5-7,
  .split--4-8,
  .split--7-5{grid-template-columns:1fr}
}

.display{
  font-weight:200;
  font-size:clamp(44px,8.4vw,128px);
  line-height:.94;
  letter-spacing:.05em;
  color:var(--white);
}
.h1{
  font-weight:250;
  font-size:clamp(34px,5vw,64px);
  line-height:1.08;
  letter-spacing:.04em;
  color:var(--white);
}
.h2{
  font-weight:300;
  font-size:clamp(24px,3vw,38px);
  line-height:1.22;
  letter-spacing:.05em;
  color:var(--white);
}
.h3{
  font-size:17px;
  font-weight:500;
  letter-spacing:.08em;
  color:var(--white);
}
.lede{
  max-width:62ch;
  font-size:17px;
  line-height:1.9;
  color:var(--text);
}
.eyebrow{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--muted);
}
.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
  letter-spacing:.02em;
}
.muted{color:var(--muted)}
.text-cyan{color:var(--cyan)}
.text-amber{color:var(--amber)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:44px;
  padding:0 22px;
  border:1px solid var(--line);
  border-radius:2px;
  background:var(--glass);
  color:var(--text);
  font-size:13px;
  letter-spacing:.14em;
  white-space:nowrap;
  transition:border-color .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.btn:hover{
  border-color:var(--cyan);
  color:var(--white);
  background:rgba(34,224,208,.09);
  transform:translateY(-1px);
}
.btn--primary{
  border-color:var(--cyan);
  background:var(--cyan);
  color:#04100E;
  font-weight:500;
}
.btn--primary:hover{
  background:#3BF0E0;
  border-color:#3BF0E0;
  color:#04100E;
}
.btn--amber{
  border-color:rgba(255,162,58,.7);
  background:transparent;
  color:var(--amber);
}
.btn--amber:hover{
  border-color:var(--amber);
  background:rgba(255,162,58,.12);
  color:#FFC176;
}
.btn--ghost{background:transparent}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  padding-block:20px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--muted);
}
.breadcrumb li{display:flex;align-items:center;gap:10px}
.breadcrumb li+li::before{content:"/";color:var(--line)}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb [aria-current="page"]{color:var(--silver)}

/* ---------- 面板 / 标签 ---------- */
.panel{
  padding:clamp(18px,2.4vw,28px);
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:2px;
}
.panel--glass{
  background:rgba(16,38,31,.62);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.panel--flush{padding:0}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border:1px solid var(--line);
  border-radius:2px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--muted);
}
.tag--cyan{border-color:rgba(34,224,208,.5);color:var(--cyan)}
.tag--amber{border-color:rgba(255,162,58,.5);color:var(--amber)}

.pulse{
  position:relative;
  display:inline-block;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--cyan);
  vertical-align:middle;
}
.pulse::after{
  content:"";
  position:absolute;
  inset:-3px;
  border-radius:50%;
  border:1px solid var(--cyan);
  opacity:.6;
  animation:pulse 1.2s ease-out infinite;
}
@keyframes pulse{
  0%{transform:scale(.7);opacity:.7}
  100%{transform:scale(1.7);opacity:0}
}

/* ---------- 对照表 ---------- */
.data-table{
  width:100%;
  background:rgba(6,17,15,.55);
  border:1px solid var(--line);
  font-size:14px;
}
.data-table caption{
  padding:12px 14px;
  text-align:left;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--muted);
}
.data-table th,
.data-table td{
  padding:12px 14px;
  text-align:left;
  border-bottom:1px solid rgba(58,74,87,.6);
}
.data-table thead th{
  position:sticky;
  top:0;
  z-index:2;
  background:var(--navy);
  color:var(--silver);
  font-size:11px;
  font-weight:400;
  letter-spacing:.16em;
}
.data-table tbody tr:nth-child(even){background:rgba(58,74,87,.12)}
.data-table tbody tr:hover{background:rgba(34,224,208,.08)}
.data-table td.num{color:var(--white)}

/* ---------- 图片容器（供页面阶段放置图片） ---------- */
.figure{
  position:relative;
  display:block;
  overflow:hidden;
  margin:0;
  aspect-ratio:16/9;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:2px;
}
.figure img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.figure--wide{aspect-ratio:21/9}
.figure--square{aspect-ratio:1/1}
.figure--panel{aspect-ratio:4/3}
.figure--tall{aspect-ratio:3/4}
.figure--placeholder{
  background-color:var(--glass);
  background-image:
    linear-gradient(rgba(58,74,87,.35) 1px,transparent 1px),
    linear-gradient(90deg,rgba(58,74,87,.35) 1px,transparent 1px);
  background-size:32px 32px;
}
.figure__caption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--muted);
}
.figure__badge{
  position:absolute;
  left:12px;top:12px;
  z-index:2;
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,120px);
  background:var(--navy);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;
  width:132px;height:2px;
  background:var(--cyan);
}
.footer__inner{
  display:grid;
  grid-template-columns:minmax(200px,1.05fr) 2.6fr;
  gap:clamp(28px,4vw,64px);
  width:100%;
  max-width:var(--w-max);
  margin-inline:auto;
  padding:clamp(40px,6vw,76px) var(--pad-x) clamp(32px,4vw,56px);
}
.footer__name{
  font-size:22px;
  font-weight:300;
  letter-spacing:.22em;
  color:var(--white);
}
.footer__tag{
  margin-top:8px;
  font-size:12px;
  letter-spacing:.12em;
  color:var(--muted);
}
.footer__brand-note{
  margin-top:16px;
  max-width:34ch;
  font-size:13px;
  line-height:1.8;
  color:var(--muted);
}
.footer__chips{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:20px;
}
.footer__chips li{
  padding:4px 10px;
  border:1px solid var(--line);
  border-radius:2px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  color:var(--silver);
}
.footer__nav{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
}
.footer__col-title{
  margin-bottom:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--silver);
}
.footer__list{display:flex;flex-direction:column;gap:2px}
.footer__list a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  font-size:13.5px;
  color:var(--text);
  transition:color .18s var(--ease);
}
.footer__list a:hover{color:var(--cyan)}
.footer__list a[aria-current="page"]{color:var(--cyan)}
.footer__base{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:10px 28px;
  width:100%;
  max-width:var(--w-max);
  margin-inline:auto;
  padding:24px var(--pad-x) clamp(36px,5vw,56px);
  border-top:1px solid rgba(58,74,87,.6);
  font-size:12px;
  color:var(--muted);
}
.footer__legal{
  font-family:var(--font-mono);
  letter-spacing:.1em;
  color:var(--silver);
}
.footer__contact{font-family:var(--font-mono);letter-spacing:.04em}
.footer__address{flex:1 1 260px}
.footer__privacy{
  display:flex;
  flex-wrap:wrap;
  gap:6px 20px;
}
.footer__privacy a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  color:var(--silver);
  transition:color .18s var(--ease);
}
.footer__privacy a:hover{color:var(--cyan)}
.footer__note{
  flex:1 1 100%;
  max-width:76ch;
  padding-top:6px;
  line-height:1.9;
  color:var(--muted);
}
.footer__year{
  flex:1 1 100%;
  padding-top:6px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:rgba(126,145,140,.8);
}

/* ---------- 入场动效 ---------- */
[data-reveal]{transition:opacity .18s var(--ease),transform .18s var(--ease)}
[data-reveal].is-pending{opacity:0;transform:translateY(12px)}

body.nav-open{overflow:hidden}

/* ---------- 响应式 ---------- */
@media (max-width:1320px){
  .utility{display:none}
}
@media (max-width:1180px){
  .brand__index{display:none}
}
@media (max-width:1024px){
  :root{--header-h:56px}
  body{
    padding-top:calc(var(--header-h) + 40px);
    padding-left:0;
  }
  .skip-link{left:0}
  #main-content{scroll-margin-top:108px}

  .rail{
    top:var(--header-h);
    left:0;right:0;bottom:auto;
    width:auto;height:40px;
    flex-direction:row;
    align-items:center;
    gap:14px;
    padding:0 14px;
    border-right:0;
    border-bottom:1px solid var(--line);
    overflow-x:auto;
    overflow-y:hidden;
    -webkit-overflow-scrolling:touch;
  }
  .rail__brand{flex-direction:row;gap:6px;min-height:40px}
  .rail__brand-mark{width:16px;height:16px}
  .rail__nav{flex:0 0 auto;width:auto}
  .rail__list{flex-direction:row;gap:2px}
  .rail__link{width:auto;min-width:44px;height:40px;padding:0 6px}
  .rail__link::before,
  .rail__link::after{display:none}

  .header-bar{left:0}
  .site-header[data-scrolled] .header-bar{height:var(--header-h)}
  .header-bar__inner{padding-inline:16px;gap:12px}
  .header-bar{background:linear-gradient(to bottom,rgba(6,17,15,.88),rgba(6,17,15,0))}
  .site-header[data-scrolled] .header-bar{background-color:rgba(11,27,43,.96)}

  .brand__note{display:none}
  .subbar__label{display:none}
  .subbar__label--short{display:inline}
  .subbar__link{padding:0 10px;font-size:12px}
  .nav-toggle{display:inline-flex}

  .primary-nav{
    position:fixed;
    top:0;left:0;bottom:0;
    width:min(300px,86vw);
    z-index:75;
    display:flex;
    flex-direction:column;
    justify-content:flex-start;
    padding:22px 18px 32px;
    background:rgba(11,27,43,.99);
    border-right:1px solid var(--line);
    overflow-y:auto;
    transform:translateX(-102%);
    transition:transform var(--dur) var(--ease);
  }
  .primary-nav::before{
    content:"章节索引";
    display:block;
    margin-bottom:14px;
    font-family:var(--font-mono);
    font-size:10px;
    letter-spacing:.24em;
    color:var(--muted);
  }
  .primary-nav[data-open]{transform:translateX(0)}
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    width:100%;
  }
  .nav-list li{border-bottom:1px solid rgba(58,74,87,.5)}
  .nav-link{
    width:100%;
    min-height:52px;
    font-size:15px;
    letter-spacing:.06em;
  }
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{color:var(--cyan)}

  .footer__inner{grid-template-columns:1fr;gap:32px}
  .footer__nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 24px}
}
@media (max-width:640px){
  .footer__nav{grid-template-columns:1fr;gap:4px}
  .footer__col{padding-bottom:14px;border-bottom:1px solid rgba(58,74,87,.45)}
  .footer__base{font-size:11.5px}
  .footer__address{flex-basis:100%}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  [data-reveal].is-pending{opacity:1;transform:none}
  .pulse::after{animation:none;opacity:0}
}