/* =========================================================
   开云竞猜 · 共享样式表 /assets/site.css
   夜场黑底 + 冷灰面板 + 荧光绿/警示橙/数据蓝强调
   ========================================================= */

/* ---------- 0. Tokens ---------- */
:root{
  --ink:#07090B;
  --panel:#10161B;
  --panel-2:#1C242B;
  --line:#2E3A44;
  --text:#A9B6C1;
  --white:#EAF2F7;
  --green:#2BF09B;
  --green-ink:#04140D;
  --orange:#FF8A3D;
  --blue:#4DA6FF;
  --snow:#6C7E8C;

  --font-display:"Helvetica Neue","Arial Narrow","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;

  --header-h:78px;
  --container:1440px;
  --gap:24px;
  --cut:18px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --frame-x:18px;
}

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
h1,h2,h3,h4,h5,h6,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--green);outline-offset:3px}
::selection{background:var(--green);color:var(--green-ink)}

/* ---------- 2. Base typography ---------- */
body{
  background:var(--ink);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{
  font-family:var(--font-display);
  color:var(--white);
  font-weight:900;
  letter-spacing:-.03em;
  line-height:1.06;
}
h1{font-size:clamp(32px,5.2vw,64px)}
h2{font-size:clamp(24px,3.4vw,40px)}
h3{font-size:clamp(18px,2.2vw,26px)}
h4{font-size:17px;letter-spacing:-.01em}
p{max-width:74ch}
.display-xl{
  font-weight:200;
  font-size:clamp(42px,9vw,132px);
  line-height:.92;
  letter-spacing:-.03em;
  color:var(--white);
}
.display-index{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--green);
}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
strong{color:var(--white);font-weight:700}

/* ---------- 3. Page frame ---------- */
body::before,
body::after{
  content:"";
  position:fixed;
  top:0;bottom:0;
  width:1px;
  z-index:22;
  pointer-events:none;
  background:linear-gradient(180deg,transparent 0,var(--line) 8%,var(--line) 92%,transparent 100%);
}
body::before{left:var(--frame-x)}
body::after{right:var(--frame-x)}
@media (max-width:1023px){
  body::before,body::after{display:none}
}

/* ---------- 4. Layout utilities ---------- */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 clamp(16px,3.2vw,48px);
}
.container--narrow{max-width:920px}
.section{padding:clamp(56px,8vw,112px) 0}
.section--tight{padding:clamp(32px,5vw,64px) 0}
.section-head{display:flex;flex-direction:column;gap:14px;margin-bottom:clamp(24px,3.6vw,44px)}
.rule-slash{
  height:2px;
  border:0;
  margin:clamp(32px,5vw,64px) 0;
  background:linear-gradient(90deg,var(--green),rgba(77,166,255,.35) 55%,transparent);
  transform:skewY(-1.4deg);
  transform-origin:left center;
}
.visually-hidden{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 5. Labels / tags ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--snow);
}
.eyebrow::before{content:"";width:16px;height:2px;background:var(--green);flex:0 0 auto}
.label{
  display:inline-block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--snow);font-weight:700;
}
.tag,.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.12em;text-transform:uppercase;font-weight:700;
  padding:5px 10px;border:1px solid var(--line);color:var(--text);
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,0 100%);
}
.tag--safe{color:var(--green-ink);background:var(--green);border-color:var(--green)}
.tag--danger{color:var(--ink);background:var(--orange);border-color:var(--orange)}
.tag--data{color:var(--blue);border-color:rgba(77,166,255,.5)}

/* ---------- 6. Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-body);
  font-size:14px;font-weight:700;letter-spacing:.02em;
  padding:11px 20px;
  background:var(--panel-2);
  color:var(--white);
  border:1px solid var(--line);
  cursor:pointer;
  white-space:nowrap;
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,0 100%);
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn:hover{border-color:var(--green);color:var(--green);transform:translateY(-1px)}
.btn--accent{background:var(--green);border-color:var(--green);color:var(--green-ink)}
.btn--accent:hover{background:#5CF5B4;color:var(--green-ink);box-shadow:0 14px 34px -18px rgba(43,240,155,.9)}
.btn--ghost{background:transparent;color:var(--white)}
.btn--ghost:hover{border-color:var(--orange);color:var(--orange)}
.btn--block{display:flex;width:100%}

/* ---------- 7. Header ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:60;
  padding:10px 16px;background:var(--green);color:var(--green-ink);
  font-size:13px;font-weight:700;letter-spacing:.06em;
  transform:translateY(-220%);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

.site-header{
  position:sticky;top:0;z-index:20;
  background:rgba(7,9,11,.86);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.scroll-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:rgba(46,58,68,.55);
  overflow:hidden;z-index:2;
}
.scroll-progress-bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--green),var(--blue));
  transition:width .12s linear;
}
.header-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 clamp(16px,3.2vw,48px);
  min-height:var(--header-h);
  display:flex;align-items:center;gap:clamp(12px,2vw,28px);
  transition:min-height .2s var(--ease);
}
.site-header.is-condensed .header-inner{min-height:60px}

.brand{
  position:relative;flex:0 0 auto;
  display:flex;flex-direction:column;justify-content:center;gap:1px;
  padding-left:14px;
}
.brand::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) skewY(-8deg);
  width:4px;height:28px;background:var(--green);
}
.brand-mark{
  font-family:var(--font-display);
  font-size:20px;font-weight:900;letter-spacing:-.02em;line-height:1.1;
  color:var(--white);
}
.brand-badge{
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.1em;color:var(--snow);
  transition:opacity .18s var(--ease);
}
.site-header.is-condensed .brand-badge{opacity:0}

.primary-nav{flex:1 1 auto;min-width:0}
.nav-list{display:flex;align-items:center;justify-content:center;gap:clamp(4px,1.2vw,18px)}
.nav-item{position:relative}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 6px;
  font-size:14px;letter-spacing:.02em;color:var(--text);
  white-space:nowrap;
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:6px;right:6px;bottom:0;height:2px;
  background:var(--green);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .18s var(--ease);
}
.nav-link:hover{color:var(--white)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--white)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}

.nav-cta{display:none}

.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.header-context{
  display:none;flex:0 0 auto;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;
}
.header-context-label{color:var(--snow)}
.header-context-value{color:var(--green)}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  margin-left:auto;
  padding:10px 14px;
  background:var(--panel-2);border:1px solid var(--line);color:var(--white);
  font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  cursor:pointer;
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,0 100%);
  transition:border-color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--green)}
.nav-toggle-bars{display:inline-flex;flex-direction:column;gap:3px;width:16px}
.nav-toggle-bars i{display:block;height:1.5px;background:var(--green);transition:transform .18s var(--ease),opacity .18s var(--ease)}
.site-header[data-open] .nav-toggle-bars i:nth-child(1){transform:translateY(4.5px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bars i:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle-bars i:nth-child(3){transform:translateY(-4.5px) rotate(-45deg)}

@media (min-width:1200px){
  .site-header.is-condensed .header-context{display:flex}
}

/* ---------- 8. Footer ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  padding:clamp(56px,7vw,96px) 0 clamp(26px,4vw,44px);
  border-top:1px solid var(--line);
  background:
    radial-gradient(120% 90% at 10% -20%,rgba(77,166,255,.12),transparent 62%),
    radial-gradient(90% 70% at 92% 120%,rgba(43,240,155,.08),transparent 60%),
    linear-gradient(180deg,#0B1015 0%,var(--ink) 72%);
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.14;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 72%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 72%);
}
.footer-track{
  position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--green),var(--blue) 52%,var(--orange));
  transform:skewY(-.5deg);transform-origin:left center;
  opacity:.9;
}
.footer-inner{position:relative;z-index:1}
.footer-top{
  display:grid;
  grid-template-columns:1.35fr .85fr .85fr 1.05fr;
  gap:clamp(24px,3.4vw,56px);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start}
.footer-brand-mark{
  font-family:var(--font-display);
  font-size:26px;font-weight:900;letter-spacing:-.02em;color:var(--white);
  padding-bottom:6px;border-bottom:2px solid var(--green);
}
.footer-brand-note{margin-top:16px;font-size:15px;line-height:1.75;color:var(--text);max-width:26ch}
.footer-version{
  margin-top:18px;display:inline-block;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--snow);
  padding:8px 12px;border:1px dashed var(--line);
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,0 100%);
}
.footer-col-heading{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-body);
  font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--white);margin-bottom:16px;
}
.footer-col-heading::before{content:"";width:14px;height:2px;background:var(--green);flex:0 0 auto}
.footer-links{display:flex;flex-direction:column;gap:4px}
.footer-link{
  display:inline-block;padding:5px 0;
  font-size:14.5px;color:var(--text);
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-link:hover{color:var(--green);transform:translateX(4px)}
.footer-contact-list{display:grid;gap:14px}
.footer-contact-item{display:grid;gap:2px}
.footer-contact-key{font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--snow);font-weight:700}
.footer-contact-value{
  font-family:var(--font-mono);font-size:14px;line-height:1.6;color:var(--white);
  letter-spacing:.01em;word-break:break-word;
}
.footer-note{margin-top:14px;font-size:13px;line-height:1.7;color:var(--snow);max-width:34ch}
.footer-bottom{
  margin-top:clamp(36px,5vw,64px);
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:14px 28px;
}
.footer-legal{font-size:12.5px;letter-spacing:.04em;color:var(--snow)}
.footer-legal-list{display:flex;flex-wrap:wrap;gap:8px 20px}
.footer-legal-link{
  font-size:12.5px;color:var(--text);
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-legal-link:hover{color:var(--white);border-bottom-color:var(--green)}
.footer-icp{
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.02em;color:var(--snow);
  transition:color .18s var(--ease);
}
.footer-icp:hover{color:var(--blue)}

/* ---------- 9. Back to top ---------- */
.back-to-top{
  position:fixed;right:clamp(14px,2vw,28px);bottom:clamp(14px,2vw,28px);
  width:50px;height:50px;display:grid;place-items:center;
  background:var(--panel-2);border:1px solid var(--line);color:var(--green);
  cursor:pointer;z-index:24;
  opacity:0;visibility:hidden;transform:translateY(12px);
  clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,0 100%);
  transition:opacity .2s var(--ease),transform .2s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.back-to-top::before{content:"↑";font-family:var(--font-mono);font-size:18px;line-height:1}
.back-to-top.is-visible{opacity:1;visibility:visible;transform:none}
.back-to-top:hover{border-color:var(--green);background:#14202A}

/* ---------- 10. Panels / Bento ---------- */
.panel{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  padding:clamp(20px,2.4vw,32px);
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,0 100%);
  transition:border-color .18s var(--ease),transform .18s var(--ease);
}
.panel--cut-bl{clip-path:polygon(0 0,100% 0,100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)))}
.panel--cut-both{clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)))}
.panel--flat{background:var(--panel-2)}
.panel:hover{border-color:#3E4E5A}
.panel--accent{border-color:rgba(43,240,155,.5)}
.panel--warn{border-color:rgba(255,138,61,.5)}

.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gap)}
.bento > .col-3{grid-column:span 3}
.bento > .col-4{grid-column:span 4}
.bento > .col-6{grid-column:span 6}
.bento > .col-8{grid-column:span 8}
.bento > .col-12{grid-column:span 12}
.bento > .offset-1{transform:translateY(16px)}
.bento > .offset-2{transform:translateY(40px)}

/* ---------- 11. Stats ---------- */
.stat{display:flex;flex-direction:column;gap:6px}
.stat-value{
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(28px,4.6vw,56px);
  line-height:1;letter-spacing:-.02em;color:var(--white);
  font-variant-numeric:tabular-nums;
}
.stat-unit{font-family:var(--font-mono);font-size:14px;color:var(--green);font-weight:600;margin-left:6px}
.stat-label{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--snow);font-weight:700}

/* ---------- 12. Media frames ---------- */
.media{
  position:relative;
  display:block;width:100%;overflow:hidden;
  background:var(--panel);
  border:1px solid var(--line);
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,0 100%);
}
.media img{width:100%;height:100%;object-fit:cover;display:block}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(7,9,11,0) 42%,rgba(7,9,11,.78) 100%);
}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--3x4{aspect-ratio:3/4}
.media--placeholder{
  background-color:var(--panel);
  background-image:
    linear-gradient(115deg,rgba(43,240,155,.10),transparent 55%),
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:auto,28px 28px,28px 28px;
  opacity:1;
}
.media-caption{
  margin-top:10px;font-size:12.5px;letter-spacing:.06em;line-height:1.7;color:var(--snow);
}

/* ---------- 13. Prose ---------- */
.prose{max-width:68ch;font-size:16.5px;line-height:1.85}
.prose > * + *{margin-top:1.1em}
.prose h2{margin-top:1.8em;font-size:clamp(22px,3vw,32px)}
.prose h3{margin-top:1.5em}
.prose ul{display:grid;gap:8px;padding-left:2px}
.prose li{position:relative;padding-left:18px}
.prose li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;background:var(--green);transform:rotate(45deg)}
.prose a{color:var(--blue);border-bottom:1px solid rgba(77,166,255,.4)}
.prose a:hover{color:var(--white);border-bottom-color:var(--green)}

/* ---------- 14. Breadcrumbs ---------- */
.breadcrumbs{padding:clamp(18px,2.4vw,28px) 0 0}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.breadcrumb-item{display:inline-flex;align-items:center;gap:10px}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:var(--line);font-family:var(--font-mono)}
.breadcrumb-link{font-size:12.5px;letter-spacing:.06em;color:var(--text);transition:color .18s var(--ease)}
.breadcrumb-link:hover{color:var(--green)}
.breadcrumb-current{font-size:12.5px;letter-spacing:.06em;color:var(--white);font-weight:700}

/* ---------- 15. Fold / Term / Filter ---------- */
.fold{background:var(--panel);border:1px solid var(--line);margin-bottom:12px}
.fold > summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 20px;cursor:pointer;color:var(--white);font-weight:700;font-size:15.5px;
  list-style:none;
}
.fold > summary::-webkit-details-marker{display:none}
.fold > summary::after{content:"+";font-family:var(--font-mono);color:var(--green);font-size:18px;line-height:1}
.fold[open] > summary::after{content:"–"}
.fold[open] > summary{border-bottom:1px solid var(--line)}
.fold-body{padding:16px 20px 20px;font-size:15px;line-height:1.8;color:var(--text)}

.term{
  position:relative;display:inline-block;
  color:var(--white);border-bottom:1px dashed var(--line);cursor:help;
}
.term .term-pop{
  position:absolute;left:0;top:calc(100% + 8px);z-index:12;
  width:min(260px,70vw);
  padding:10px 12px;
  background:var(--panel-2);border:1px solid var(--line);
  font-size:13px;line-height:1.65;font-weight:400;color:var(--text);
  opacity:0;visibility:hidden;transform:translateY(-4px);
  transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s;
}
.term:hover .term-pop,
.term:focus-visible .term-pop,
.term.is-open .term-pop{opacity:1;visibility:visible;transform:none}

.filter-bar{display:flex;flex-wrap:wrap;gap:8px}
.filter-btn{
  padding:8px 14px;
  background:transparent;border:1px solid var(--line);color:var(--text);
  font-size:12.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.filter-btn:hover{border-color:var(--green);color:var(--white)}
.filter-btn[aria-pressed="true"]{background:var(--green);border-color:var(--green);color:var(--green-ink)}
.filter-item[hidden]{display:none}

/* ---------- 16. Section index ---------- */
.section-index{
  position:fixed;right:calc(var(--frame-x) + 22px);top:50%;transform:translateY(-50%);
  z-index:23;display:none;
}
.section-index-list{display:flex;flex-direction:column;gap:12px;align-items:flex-end}
.section-index-link{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--snow);
  transition:color .18s var(--ease);
}
.section-index-link::after{
  content:"";width:18px;height:1px;background:var(--snow);
  transition:width .18s var(--ease),background .18s var(--ease);
}
.section-index-link:hover{color:var(--white)}
.section-index-link:hover::after{width:30px;background:var(--green)}
.section-index-link[aria-current="true"]{color:var(--green)}
.section-index-link[aria-current="true"]::after{width:34px;background:var(--green)}
@media (min-width:1280px){
  .section-index{display:block}
}

/* ---------- 17. Reveal ---------- */
[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 18. Responsive ---------- */
@media (max-width:1200px){
  .footer-top{grid-template-columns:1.2fr 1fr 1fr;row-gap:40px}
  .footer-brand{grid-column:span 3}
}
@media (max-width:1040px){
  .header-actions{display:none}
  .nav-toggle{display:inline-flex}
  .primary-nav{
    position:fixed;left:12px;right:12px;bottom:12px;top:auto;
    display:block;flex:none;
    padding:18px 18px 22px;
    max-height:72vh;overflow-y:auto;
    background:linear-gradient(180deg,var(--panel-2),var(--panel));
    border:1px solid var(--line);
    clip-path:polygon(0 0,calc(100% - 22px) 0,100% 22px,100% 100%,0 100%);
    transform:translateY(calc(100% + 40px));
    opacity:0;visibility:hidden;
    transition:transform .28s var(--ease),opacity .2s var(--ease),visibility .28s;
    z-index:30;
  }
  .site-header[data-open] .primary-nav{transform:translateY(0);opacity:1;visibility:visible}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-item{border-bottom:1px solid var(--line)}
  .nav-link{display:flex;align-items:center;padding:14px 4px;font-size:16px}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{color:var(--green)}
  .nav-link[aria-current="page"]::before{
    content:"";display:inline-block;width:6px;height:6px;background:var(--green);
    margin-right:10px;transform:rotate(45deg);
  }
  .nav-cta{display:grid;gap:10px;margin-top:18px}
  html.nav-open,html.nav-open body{overflow:hidden}
  .bento{gap:16px}
  .bento > .col-3,.bento > .col-4{grid-column:span 6}
  .bento > .col-6,.bento > .col-8{grid-column:span 12}
  .bento > .offset-1,.bento > .offset-2{transform:none}
  .header-context{display:none!important}
}
@media (max-width:760px){
  :root{--header-h:66px;--gap:16px;--cut:14px}
  body{font-size:15.5px;line-height:1.78}
  .footer-top{grid-template-columns:1fr;row-gap:34px}
  .footer-brand{grid-column:auto}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
  .bento > .col-3,.bento > .col-4,.bento > .col-6,.bento > .col-8{grid-column:span 12}
  .back-to-top{width:46px;height:46px}
  .brand-badge{display:none}
}
@media (max-width:420px){
  .brand-mark{font-size:18px}
  .nav-toggle{padding:9px 12px;font-size:11px}
}

/* ---------- 19. Reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms!important;
    animation-iteration-count:1!important;
    transition-duration:.01ms!important;
  }
  [data-reveal]{opacity:1;transform:none}
  .scroll-progress-bar{transition:none}
}