/* ============================================================
   易博品牌 · /assets/site.css
   信号档案台：深墨蓝台面 + 暖纸色文书 + 铜金刻度 + 信号橙状态
   ============================================================ */

/* ---------- 01 变量 ---------- */
:root{
  --ink:#0B1622;
  --ink-2:#122335;
  --ink-3:#1C3549;
  --paper:#F4EFE6;
  --paper-2:#EAE2D4;
  --paper-3:#DCD1BE;
  --copper:#B9843F;
  --copper-2:#D9B57E;
  --signal:#E2542A;
  --signal-2:#BE411B;
  --slate:#5C7180;
  --slate-2:#93A5AF;
  --line:rgba(11,22,34,.14);
  --line-2:rgba(11,22,34,.30);
  --line-inv:rgba(244,239,230,.16);
  --shell:1300px;
  --gutter:clamp(18px,4vw,48px);
  --gap:clamp(16px,2.4vw,32px);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Courier New",monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 02 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:110px;
}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,figcaption,blockquote,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
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}

/* ---------- 03 基础排版 ---------- */
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:clamp(15px,.34vw + 14.2px,16.6px);
  line-height:1.85;
  letter-spacing:.012em;
  overflow-wrap:break-word;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5{font-family:var(--font-sans);font-weight:300;line-height:1.12;letter-spacing:-.015em}
h1{font-size:clamp(2.3rem,5.4vw,4.4rem);font-weight:200;letter-spacing:-.03em}
h2{font-size:clamp(1.7rem,3.4vw,2.7rem)}
h3{font-size:clamp(1.15rem,1.6vw,1.45rem);font-weight:500;letter-spacing:0}
h4{font-size:1rem;font-weight:600;letter-spacing:.02em}
p{text-wrap:pretty}
strong,b{font-weight:600}
small{font-size:.78rem}
code,kbd,samp{font-family:var(--font-mono);font-size:.86em;background:rgba(11,22,34,.05);padding:.1em .4em}
::selection{background:var(--signal);color:#FFF8F2}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px}

/* ---------- 04 外壳与容器 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.shell--narrow{max-width:920px}
.rule{height:1px;width:100%;background:var(--line)}
.tick-rail{
  height:10px;
  width:100%;
  background-image:repeating-linear-gradient(90deg,var(--line-2) 0 1px,transparent 1px 14px);
  background-position:left bottom;
  background-size:100% 6px;
  background-repeat:repeat-x;
}

/* ---------- 05 跳转与进度 ---------- */
.skip-link{
  position:fixed;
  top:0;left:0;
  z-index:120;
  transform:translateY(-130%);
  background:var(--ink);
  color:var(--paper);
  border:1px solid var(--copper);
  padding:12px 20px;
  font-size:.8rem;
  letter-spacing:.2em;
  transition:transform .2s var(--ease);
}
.skip-link:focus-visible{transform:translateY(0);outline-offset:-4px}
.scroll-progress{
  position:fixed;top:0;left:0;
  height:2px;width:0;
  background:var(--signal);
  z-index:110;
  pointer-events:none;
  transition:width .12s linear;
}

/* ---------- 06 头部 masthead ---------- */
.masthead{
  position:sticky;top:0;z-index:100;
  background:var(--ink);
  color:var(--paper);
  border-bottom:1px solid var(--copper);
  box-shadow:0 1px 0 rgba(11,22,34,.4);
}
.masthead::before{
  content:"";
  position:absolute;inset:0;
  pointer-events:none;
  background-image:linear-gradient(90deg,var(--line-inv) 1px,transparent 1px);
  background-size:clamp(64px,11vw,150px) 100%;
  opacity:.45;
}
.masthead__shell{
  position:relative;
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.masthead__rail{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--gap);
  padding-block:13px;
  border-bottom:1px solid var(--line-inv);
}
.masthead__brand{
  display:flex;
  align-items:center;
  gap:clamp(14px,2vw,30px);
  min-width:0;
}
.brand-mark{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:none;
}
.brand-mark__sigil{
  display:grid;
  place-items:center;
  width:38px;height:38px;
  border:1px solid var(--copper);
  background:rgba(185,132,63,.12);
  color:var(--copper-2);
  font-size:1.05rem;
  font-weight:500;
  line-height:1;
}
.brand-mark__text{display:flex;flex-direction:column;gap:2px;line-height:1.2}
.brand-mark__name{font-size:.98rem;font-weight:600;letter-spacing:.24em}
.brand-mark__latin{
  font-family:var(--font-mono);
  font-size:.58rem;
  letter-spacing:.3em;
  color:var(--slate-2);
  text-transform:uppercase;
}
.masthead__note{
  font-size:.76rem;
  line-height:1.65;
  color:rgba(244,239,230,.58);
  max-width:36ch;
  border-left:1px solid var(--line-inv);
  padding-left:clamp(12px,1.6vw,22px);
}
.masthead__meta{
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:7px;
  flex:none;
}
.status-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:4px 11px;
  border:1px solid var(--line-inv);
  color:var(--copper-2);
  font-family:var(--font-mono);
  font-size:.64rem;
  letter-spacing:.2em;
  white-space:nowrap;
}
.status-chip__dot{
  width:6px;height:6px;
  background:var(--signal);
  flex:none;
  animation:sig-pulse 2.6s var(--ease) infinite;
}
.status-chip--quiet{border-color:var(--line-inv);color:var(--slate-2)}
.status-chip--quiet .status-chip__dot{background:var(--slate-2)}
@keyframes sig-pulse{
  0%,100%{opacity:1;transform:scale(1)}
  50%{opacity:.32;transform:scale(.62)}
}
.masthead__stamp{
  font-family:var(--font-mono);
  font-size:.6rem;
  letter-spacing:.2em;
  color:var(--slate-2);
}

/* 第二层：栏目导轨 */
.nav-rail{
  position:relative;
  display:flex;
  align-items:stretch;
}
.nav-rail__lead{
  display:flex;
  align-items:center;
  padding-right:clamp(14px,2vw,26px);
  font-family:var(--font-mono);
  font-size:.62rem;
  letter-spacing:.34em;
  color:var(--slate-2);
  border-right:1px solid var(--line-inv);
  white-space:nowrap;
}
.nav-list{display:flex;flex-wrap:wrap;align-items:stretch}
.nav-list__item{display:flex}
.nav-list__link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:9px;
  padding:17px clamp(14px,1.7vw,24px);
  font-size:.9rem;
  letter-spacing:.08em;
  color:rgba(244,239,230,.75);
  border-right:1px solid var(--line-inv);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-list__index{
  font-family:var(--font-mono);
  font-size:.6rem;
  letter-spacing:.1em;
  color:var(--copper);
  transition:color .2s var(--ease);
}
.nav-list__link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--signal);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .26s var(--ease),background-color .26s var(--ease);
}
.nav-list__link:hover,.nav-list__link:focus-visible{
  color:#fff;
  background:rgba(244,239,230,.07);
}
.nav-list__link:hover::after,.nav-list__link:focus-visible::after{transform:scaleX(1);background:var(--copper)}
.nav-list__link[aria-current="page"]{
  color:#fff;
  background:rgba(244,239,230,.1);
}
.nav-list__link[aria-current="page"] .nav-list__index{color:var(--signal)}
.nav-list__link[aria-current="page"]::after{transform:scaleX(1);background:var(--signal)}
.nav-rail__side{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
  padding-left:clamp(12px,1.6vw,24px);
}
.nav-rail__side .btn{padding:.58em 1em;font-size:.74rem;letter-spacing:.14em}

/* 移动端按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  align-self:center;
  padding:11px 4px;
  color:var(--paper);
  font-size:.78rem;
  letter-spacing:.2em;
}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:20px;height:10px;
  flex:none;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;left:0;
  width:100%;height:1px;
  background:var(--copper);
  transition:transform .24s var(--ease),background-color .24s var(--ease);
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{bottom:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(4.5px) rotate(45deg);background:var(--signal)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-4.5px) rotate(-45deg);background:var(--signal)}
.nav-toggle__label{white-space:nowrap}

/* ---------- 07 返回顶部 ---------- */
.top-link{
  position:fixed;
  right:clamp(14px,3vw,34px);
  bottom:clamp(14px,3vw,34px);
  z-index:105;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 15px;
  background:var(--ink);
  color:var(--paper);
  border:1px solid var(--copper);
  font-size:.68rem;
  letter-spacing:.22em;
  box-shadow:0 8px 22px rgba(11,22,34,.26);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.top-link::before{content:"↑";color:var(--signal);font-size:.85rem;line-height:1}
.top-link:hover{background:var(--copper);color:var(--ink)}
.top-link[hidden]{display:none}

/* ---------- 08 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  padding:.78em 1.35em;
  border:1px solid var(--ink);
  background:transparent;
  color:var(--ink);
  font-size:.8rem;
  letter-spacing:.16em;
  line-height:1.2;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn:hover,.btn:focus-visible{background:var(--ink);color:var(--paper)}
.btn--signal{background:var(--signal);border-color:var(--signal);color:#FFF8F2}
.btn--signal:hover,.btn--signal:focus-visible{background:var(--signal-2);border-color:var(--signal-2);color:#fff}
.btn--ghost{border-color:rgba(244,239,230,.42);color:var(--paper)}
.btn--ghost:hover,.btn--ghost:focus-visible{background:var(--paper);border-color:var(--paper);color:var(--ink)}
.btn--quiet{border-color:var(--line-2);color:var(--slate)}
.btn--quiet:hover,.btn--quiet:focus-visible{background:var(--ink);border-color:var(--ink);color:var(--paper)}

/* ---------- 09 章节与通用块 ---------- */
.section{padding-block:clamp(46px,7vw,108px)}
.section--tight{padding-block:clamp(26px,3.6vw,54px)}
.section--paper{background:var(--paper-2)}
.section--ink{background:var(--ink);color:var(--paper)}
.section--ink .section__lede{color:rgba(244,239,230,.66)}
.section--ink .section__head{border-top-color:var(--line-inv)}
.section--ink .rule{background:var(--line-inv)}
.section__head{
  display:grid;
  gap:14px;
  margin-bottom:clamp(22px,3.6vw,46px);
  padding-top:16px;
  border-top:1px solid var(--line-2);
}
.section__index{
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.34em;
  color:var(--signal);
}
.section__title{font-size:clamp(1.7rem,3.6vw,2.9rem);font-weight:250;letter-spacing:-.02em}
.section__lede{max-width:64ch;font-size:.94rem;color:var(--slate)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:.64rem;
  letter-spacing:.32em;
  text-transform:uppercase;
  color:var(--copper);
}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor;flex:none}
.frame{
  position:relative;
  border:1px solid var(--line-2);
  background:var(--paper);
  padding:clamp(20px,4vw,58px);
}
.frame::before,.frame::after{
  content:"";
  position:absolute;
  width:14px;height:14px;
  border:1px solid var(--signal);
  pointer-events:none;
}
.frame::before{top:-1px;left:-1px;border-right:0;border-bottom:0}
.frame::after{bottom:-1px;right:-1px;border-left:0;border-top:0}

/* ---------- 10 网格 ---------- */
.grid{display:grid;gap:var(--gap)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(216px,1fr))}
@media (min-width:900px){
  .grid--split{grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:clamp(24px,4vw,64px)}
}

/* ---------- 11 面板 / 数据 / 台账 ---------- */
.panel{
  background:var(--paper-2);
  border:1px solid var(--line);
  display:flex;
  flex-direction:column;
}
.panel--anchor{border-color:var(--signal);border-left-width:3px;background:#FBF7F0}
.panel__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:14px 20px;
  border-bottom:1px solid var(--line);
}
.panel__title{
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.24em;
  color:var(--ink);
  text-transform:uppercase;
}
.panel__body{padding:clamp(16px,2.2vw,24px);flex:1}
.panel__foot{
  padding:13px 20px;
  border-top:1px solid var(--line);
  font-size:.76rem;
  color:var(--slate);
}
.data-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
  border:1px solid var(--line);
  background:var(--paper);
}
.data-cell{padding:18px 20px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.data-cell__label{
  font-family:var(--font-mono);
  font-size:.62rem;
  letter-spacing:.26em;
  color:var(--slate);
  text-transform:uppercase;
}
.data-cell__value{margin-top:8px;font-size:1.55rem;font-weight:250;line-height:1.2}
.ledger{display:grid;border-top:1px solid var(--line-2)}
.ledger__row{
  display:grid;
  grid-template-columns:minmax(110px,190px) minmax(0,1fr);
  gap:16px;
  padding:14px 0;
  border-bottom:1px solid var(--line);
}
.ledger__key{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.16em;color:var(--slate)}
.ledger__val{font-size:.92rem}
@media (max-width:560px){
  .ledger__row{grid-template-columns:1fr;gap:4px}
}
.tag{
  display:inline-flex;
  align-items:center;
  padding:3px 10px;
  border:1px solid currentColor;
  font-family:var(--font-mono);
  font-size:.64rem;
  letter-spacing:.18em;
  color:var(--copper);
  white-space:nowrap;
}
.tag--signal{color:var(--signal)}
.tag--slate{color:var(--slate)}

/* ---------- 12 图片容器 ---------- */
.media-frame{
  position:relative;
  width:100%;
  border:1px solid var(--line);
  background:var(--ink-2);
  overflow:hidden;
}
.media-frame__inner{
  aspect-ratio:16/10;
  display:grid;
  place-items:center;
  gap:10px;
  color:var(--slate-2);
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.26em;
  text-align:center;
  padding:20px;
  background-image:
    repeating-linear-gradient(90deg,var(--line-inv) 0 1px,transparent 1px 34px),
    repeating-linear-gradient(0deg,var(--line-inv) 0 1px,transparent 1px 34px);
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame--wide .media-frame__inner{aspect-ratio:21/9}
.media-frame--tall .media-frame__inner{aspect-ratio:3/4}
.media-frame--square .media-frame__inner{aspect-ratio:1/1}
.media-frame__cap{
  position:absolute;
  left:0;right:0;bottom:0;
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  gap:12px;
  padding:12px 14px;
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.18em;
  background:linear-gradient(to top,rgba(11,22,34,.88),rgba(11,22,34,.55) 55%,rgba(11,22,34,0));
}

/* ---------- 13 正文 / 面包屑 / 目录 ---------- */
.prose{max-width:72ch}
.prose > * + *{margin-top:1.05em}
.prose h2,.prose h3{margin-top:1.9em;margin-bottom:.5em}
.prose ul,.prose ol{padding-left:1.25em}
.prose ul li{position:relative;padding-left:.9em;margin-top:.5em}
.prose ul li::before{content:"";position:absolute;left:0;top:.78em;width:6px;height:1px;background:var(--signal)}
.prose ol{list-style:decimal}
.prose ol li{margin-top:.5em;padding-left:.2em}
.prose a{border-bottom:1px solid var(--copper);transition:color .2s var(--ease),border-color .2s var(--ease)}
.prose a:hover{color:var(--signal);border-color:var(--signal)}
.prose blockquote{
  border-left:2px solid var(--copper);
  padding:4px 0 4px 18px;
  color:var(--slate);
}
.prose img{border:1px solid var(--line)}
.breadcrumb{padding-block:16px}
.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.16em;
  color:var(--slate);
}
.breadcrumb__item{display:flex;align-items:center;gap:8px}
.breadcrumb__item:not(:last-child)::after{content:"/";color:var(--line-2)}
.breadcrumb__link{border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.breadcrumb__link:hover{color:var(--signal);border-color:var(--signal)}
.toc{display:grid;gap:0;border-left:1px solid var(--line)}
.toc__link{
  display:block;
  margin-left:-1px;
  padding:7px 0 7px 16px;
  border-left:2px solid transparent;
  font-size:.82rem;
  color:var(--slate);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.toc__link:hover{color:var(--ink)}
.toc__link[data-active]{color:var(--ink);border-left-color:var(--signal)}

/* ---------- 14 页脚 ---------- */
.site-foot{
  margin-top:clamp(56px,9vw,120px);
  background:var(--ink);
  color:rgba(244,239,230,.72);
  border-top:1px solid var(--copper);
}
.site-foot__shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding:clamp(40px,6vw,76px) var(--gutter) clamp(20px,3vw,32px);
}
.site-foot__top{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) repeat(2,minmax(0,1fr)) minmax(0,1.5fr);
  gap:clamp(24px,3.4vw,54px);
  padding-bottom:clamp(28px,4vw,50px);
  border-bottom:1px solid var(--line-inv);
}
.site-foot__brand{display:grid;gap:12px;align-content:start}
.site-foot__name{
  font-size:1.1rem;
  font-weight:600;
  letter-spacing:.24em;
  color:var(--paper);
}
.site-foot__latin{
  font-family:var(--font-mono);
  font-size:.6rem;
  letter-spacing:.3em;
  color:var(--copper);
  text-transform:uppercase;
}
.site-foot__desc{font-size:.82rem;line-height:1.8;color:rgba(244,239,230,.6);max-width:38ch}
.site-foot__brand .status-chip{justify-self:start}
.foot-col{display:grid;gap:14px;align-content:start}
.foot-col__title{
  font-family:var(--font-mono);
  font-size:.63rem;
  letter-spacing:.3em;
  color:var(--copper);
  text-transform:uppercase;
}
.foot-col__list{display:grid;gap:2px}
.foot-col__list--plain{gap:10px}
.foot-col__link{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:5px 0;
  font-size:.86rem;
  color:rgba(244,239,230,.7);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.foot-col__link::before{
  content:"";
  width:6px;height:6px;
  background:var(--copper);
  opacity:.55;
  flex:none;
  transition:background-color .2s var(--ease),opacity .2s var(--ease);
}
.foot-col__link:hover,.foot-col__link:focus-visible{
  color:var(--paper);
  border-bottom-color:var(--copper);
}
.foot-col__link:hover::before,.foot-col__link:focus-visible::before{background:var(--signal);opacity:1}
.foot-col__link[aria-current="page"]{color:var(--paper)}
.foot-col__link[aria-current="page"]::before{background:var(--signal);opacity:1}
.foot-contact__row{display:grid;gap:3px}
.foot-contact__key{
  font-family:var(--font-mono);
  font-size:.6rem;
  letter-spacing:.24em;
  color:var(--slate-2);
  text-transform:uppercase;
}
.foot-contact__val{font-size:.85rem;color:rgba(244,239,230,.82);line-height:1.7}
.foot-contact__note{
  margin-top:14px;
  font-size:.74rem;
  line-height:1.85;
  color:rgba(244,239,230,.48);
  border-left:1px solid var(--line-inv);
  padding-left:14px;
}
.site-foot__base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:20px;
}
.site-foot__legal,.site-foot__coord{
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.12em;
  color:var(--slate-2);
}

/* ---------- 15 显现动效 ---------- */
@media (prefers-reduced-motion: no-preference){
  html[data-js="on"] .reveal{
    opacity:0;
    transform:translateY(16px);
    transition:opacity .62s var(--ease),transform .62s var(--ease);
  }
  html[data-js="on"] .reveal.is-visible{opacity:1;transform:none}
}

/* ---------- 16 响应式 ---------- */
@media (max-width:1200px){
  .site-foot__top{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr)}
  .foot-col--wide{grid-column:1 / -1}
}
@media (max-width:980px){
  .masthead__note{display:none}
  .nav-rail__lead{display:none}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;
    top:100%;
    left:calc(-1 * var(--gutter));
    right:calc(-1 * var(--gutter));
    background:var(--ink-2);
    border-top:1px solid var(--line-inv);
    border-bottom:1px solid var(--copper);
    max-height:0;
    overflow:hidden;
    visibility:hidden;
    transition:max-height .34s var(--ease),visibility .34s var(--ease);
  }
  .site-nav[data-open]{
    max-height:min(76vh,560px);
    overflow-y:auto;
    visibility:visible;
  }
  .nav-list{flex-direction:column}
  .nav-list__item{display:block}
  .nav-list__link{
    justify-content:flex-start;
    width:100%;
    padding:15px var(--gutter);
    border-right:0;
    border-bottom:1px solid var(--line-inv);
    font-size:.98rem;
  }
  .nav-list__item:last-child .nav-list__link{border-bottom:0}
  .nav-rail__side{margin-left:auto}
  .masthead__rail{align-items:flex-start}
  .masthead__meta{align-items:flex-end}
}
@media (max-width:860px){
  .site-foot__top{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-foot__brand,.foot-col--wide{grid-column:1 / -1}
}
@media (max-width:640px){
  :root{--gutter:clamp(16px,5vw,24px)}
  .masthead__stamp{display:none}
  .masthead__rail{align-items:center}
  .nav-rail__side .btn{padding:.6em .8em;font-size:.7rem;letter-spacing:.1em}
  .data-cell{border-right:0}
  .site-foot__top{grid-template-columns:1fr}
  .site-foot__brand,.foot-col--wide{grid-column:auto}
  .site-foot__base{flex-direction:column;align-items:flex-start}
  .top-link{padding:9px 12px;font-size:.62rem}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
}