/* =========================================================
   电玩城中国站 · 共享样式 /assets/site.css
   视觉系统：霓虹街机刊头 + 票根页脚 + 深色玻璃面板
   ========================================================= */

/* ---------- 1. 设计变量 ---------- */
:root{
  --ink:#08070F;
  --deck:#17102B;
  --deck-2:#1F1740;
  --purple:#B36CFF;
  --blue:#27D3F5;
  --orange:#FF8A2A;
  --teal:#5CE1C0;
  --stone:#A9A3B8;
  --cream:#F6F1E4;
  --clay:#D8654A;
  --moss:#7FA95B;

  --line:rgba(169,163,184,.26);
  --line-strong:rgba(169,163,184,.46);
  --cream-soft:rgba(246,241,228,.82);

  --font-display:'Noto Sans SC','Source Han Sans SC','PingFang SC',sans-serif;
  --font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-mono:'JetBrains Mono','IBM Plex Mono',ui-monospace,'Courier New',monospace;

  --shell-w:1180px;
  --pad:clamp(1rem,4vw,2.5rem);
  --radius:14px;
  --radius-sm:8px;

  --shadow-card:0 20px 44px -30px rgba(0,0,0,.95);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. 重置与中文排版 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  color:var(--cream);
  font-family:var(--font-body);
  font-size:1rem;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  background-color:var(--ink);
  background-image:
    radial-gradient(120% 70% at 50% -12%, rgba(179,108,255,.22), transparent 62%),
    radial-gradient(90% 60% at 105% 108%, rgba(39,211,245,.13), transparent 66%),
    radial-gradient(70% 50% at -10% 80%, rgba(255,138,42,.08), transparent 70%),
    repeating-linear-gradient(0deg, rgba(169,163,184,.05) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(90deg, rgba(169,163,184,.05) 0 1px, transparent 1px 44px);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6,p,dl,dd,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
img,svg,video{display:block;max-width:100%;height:auto}
table{border-collapse:collapse;width:100%}
strong,b{font-weight:700;color:var(--cream)}
::selection{background:var(--purple);color:var(--ink)}
:focus-visible{
  outline:2px solid var(--blue);
  outline-offset:3px;
  box-shadow:inset 0 0 0 2px rgba(255,138,42,.55);
  border-radius:4px;
}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ---------- 3. 布局基础 ---------- */
.shell{
  width:100%;
  max-width:var(--shell-w);
  margin-inline:auto;
  padding-inline:var(--pad);
}
.page-shell{
  width:100%;
  max-width:var(--shell-w);
  margin-inline:auto;
  padding-inline:var(--pad);
}
.section{padding-block:clamp(2.4rem,6vw,4.6rem);position:relative}
.section-deck{
  background:linear-gradient(180deg,rgba(23,16,43,.35),rgba(23,16,43,.78));
  border-block:1px solid var(--line);
}
.section-head{margin-bottom:clamp(1.4rem,3vw,2.2rem)}
.eyebrow{
  display:inline-flex;align-items:center;gap:.55rem;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.26em;
  text-transform:uppercase;color:var(--purple);
}
.eyebrow::before{content:"";width:1.6rem;height:2px;background:linear-gradient(90deg,var(--purple),var(--blue))}
.section-title{
  margin-top:.6rem;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.5rem,2.4vw,2.4rem);
  line-height:1.25;
  letter-spacing:.04em;
  color:var(--cream);
  text-shadow:2px 2px 0 var(--ink),3px 3px 0 rgba(179,108,255,.42);
}
.section-lede{margin-top:.7rem;max-width:64ch;color:var(--stone);font-size:.98rem}
.divider-pixel{
  height:8px;margin-block:clamp(1.4rem,3vw,2.4rem);
  background-image:repeating-linear-gradient(90deg,var(--purple) 0 6px,transparent 6px 15px);
  opacity:.45;
}

/* ---------- 4. 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.62rem 1.15rem;
  border-radius:999px;
  border:1px solid transparent;
  font-weight:700;font-size:.9rem;line-height:1.2;letter-spacing:.04em;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn-cta{
  background:linear-gradient(135deg,var(--purple),var(--blue));
  color:var(--ink);
  box-shadow:0 0 0 1px rgba(179,108,255,.55),0 12px 28px -14px rgba(179,108,255,.95);
}
.btn-cta:hover{box-shadow:0 0 0 1px rgba(39,211,245,.75),0 16px 32px -12px rgba(39,211,245,.8)}
.btn-primary{
  background:var(--orange);color:var(--ink);
  box-shadow:0 0 22px -8px rgba(255,138,42,.9);
}
.btn-primary:hover{background:#FFA24F}
.btn-ghost{background:transparent;color:var(--cream);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal);box-shadow:0 0 20px -8px rgba(92,225,192,.8)}
.nav-cta{flex:0 0 auto;font-size:.82rem;padding:.5rem .95rem;white-space:nowrap}

/* ---------- 5. 页头 ---------- */
.site-header{
  position:relative;
  z-index:50;
  background:linear-gradient(180deg,rgba(8,7,15,.98),rgba(8,7,15,.88) 62%,rgba(8,7,15,.62));
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.skip-link{
  position:absolute;left:var(--pad);top:-120px;z-index:99;
  padding:.7rem 1.1rem;
  background:var(--cream);color:var(--ink);
  font-weight:700;font-size:.9rem;
  border-radius:0 0 var(--radius-sm) var(--radius-sm);
  transition:top .18s var(--ease);
}
.skip-link:focus-visible{top:0;outline-offset:-2px}

.read-progress{
  position:fixed;inset-inline:0;top:0;height:3px;z-index:80;
  background:rgba(39,211,245,.1);
  pointer-events:none;
}
.read-progress-fill{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--purple),var(--blue) 55%,var(--orange));
  box-shadow:0 0 14px rgba(179,108,255,.85);
  transition:width .12s linear;
}

.header-strip{
  background:var(--deck);
  border-bottom:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.14em;
  color:var(--stone);
}
.strip-inner{
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding-block:.42rem;
}
.strip-tag{display:inline-flex;align-items:center;gap:.45rem;color:var(--teal)}
.strip-mid{font-size:.68rem;letter-spacing:.22em;color:var(--stone)}
.strip-links{display:flex;gap:1rem}
.strip-link{
  color:var(--stone);
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.strip-link:hover{color:var(--blue);border-color:var(--blue)}
.led-dot{
  width:.45rem;height:.45rem;border-radius:2px;
  background:var(--teal);
  box-shadow:0 0 8px var(--teal),0 0 2px var(--teal);
  animation:led-blink 2.6s steps(2,end) infinite;
}
@keyframes led-blink{0%,68%{opacity:1}69%,100%{opacity:.32}}

.masthead{
  text-align:center;
  padding-block:clamp(1rem,3vw,2rem) clamp(.85rem,2.2vw,1.5rem);
  transition:padding .26s var(--ease);
}
.brand{
  position:relative;
  display:inline-flex;flex-direction:column;align-items:center;gap:.5rem;
}
.brand-tag{
  position:absolute;left:-1.1rem;top:0;
  transform:translateX(-100%);
  writing-mode:vertical-rl;
  font-family:var(--font-mono);font-size:.62rem;letter-spacing:.34em;
  color:var(--purple);opacity:.85;
  border-left:1px solid rgba(179,108,255,.35);
  padding-left:.35rem;
}
.brand-name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.75rem,4.6vw,3.1rem);
  line-height:1.06;
  letter-spacing:.07em;
  color:var(--cream);
  text-shadow:2px 2px 0 var(--ink),4px 4px 0 rgba(179,108,255,.45),0 0 30px rgba(179,108,255,.35);
  transition:color .2s var(--ease),text-shadow .2s var(--ease),font-size .26s var(--ease);
}
.brand:hover .brand-name{
  color:#fff;
  text-shadow:2px 2px 0 var(--ink),4px 4px 0 rgba(39,211,245,.5),0 0 36px rgba(39,211,245,.55);
}
.brand-sub{
  font-family:var(--font-mono);
  font-size:.64rem;letter-spacing:.34em;text-transform:uppercase;
  color:var(--stone);
}

.nav-deck{
  position:relative;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(23,16,43,.92),rgba(23,16,43,.55));
}
.nav-deck-inner{
  position:relative;
  display:flex;align-items:center;gap:.75rem;
  min-height:3.4rem;
}
.primary-nav{flex:1 1 auto;display:flex;justify-content:center}
.nav-list{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:.12rem}
.nav-item{display:block}
.nav-link{
  position:relative;
  display:inline-block;
  padding:.5rem .72rem;
  border-radius:6px;
  font-size:.92rem;font-weight:500;
  color:var(--cream-soft);
  transition:color .18s var(--ease),background-color .18s var(--ease),text-shadow .18s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;left:.72rem;right:.72rem;bottom:.28rem;height:2px;
  background:linear-gradient(90deg,var(--purple),var(--blue));
  transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-link:hover{
  color:var(--cream);
  background:rgba(179,108,255,.14);
  text-shadow:0 0 12px rgba(179,108,255,.6);
}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{
  color:var(--ink);
  background:var(--orange);
  box-shadow:0 0 20px -6px rgba(255,138,42,.9);
}
.nav-link[aria-current="page"]::after{display:none}

.nav-toggle{
  display:none;align-items:center;gap:.5rem;
  padding:.5rem .7rem;
  border:1px solid var(--line-strong);border-radius:var(--radius-sm);
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.2em;
  color:var(--cream);
  transition:border-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.nav-toggle-bars{
  width:1.1rem;height:2px;background:var(--blue);
  box-shadow:0 -5px 0 var(--blue),0 5px 0 var(--blue);
  transition:background-color .18s var(--ease),box-shadow .18s var(--ease);
}
.nav-toggle[aria-expanded="true"]{
  border-color:var(--orange);color:var(--orange);
  box-shadow:0 0 18px -6px rgba(255,138,42,.85);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars{
  background:var(--orange);
  box-shadow:0 -5px 0 var(--orange),0 5px 0 var(--orange);
}

/* 滚动收窄态 */
.site-header[data-condensed] .header-strip{display:none}
.site-header[data-condensed] .masthead{padding-block:.55rem}
.site-header[data-condensed] .brand-name{font-size:clamp(1.1rem,2vw,1.45rem);letter-spacing:.12em}
.site-header[data-condensed] .brand-sub,
.site-header[data-condensed] .brand-tag{display:none}

/* ---------- 6. 通用内容组件 ---------- */
.grid{display:grid;gap:clamp(1rem,2vw,1.6rem)}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-auto{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}

.card{
  position:relative;
  padding:clamp(1rem,2vw,1.5rem);
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(23,16,43,.92),rgba(8,7,15,.78));
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{
  transform:translateY(-4px);
  border-color:rgba(179,108,255,.6);
  box-shadow:0 0 0 1px rgba(179,108,255,.45),0 24px 44px -28px rgba(179,108,255,.95);
}
.card-title{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(1.05rem,1.6vw,1.3rem);line-height:1.35;letter-spacing:.03em;
  text-shadow:1px 1px 0 var(--ink),2px 2px 0 rgba(179,108,255,.32);
}
.card-body{margin-top:.55rem;color:var(--stone);font-size:.95rem;line-height:1.78}

.tag-row{display:flex;flex-wrap:wrap;gap:.45rem}
.tag{
  display:inline-flex;align-items:center;gap:.3rem;
  padding:.2rem .6rem;border-radius:4px;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;
  color:var(--purple);
  background:rgba(179,108,255,.14);
  border:1px solid rgba(179,108,255,.38);
}
.tag-blue{color:var(--blue);background:rgba(39,211,245,.12);border-color:rgba(39,211,245,.4)}
.tag-orange{color:var(--orange);background:rgba(255,138,42,.14);border-color:rgba(255,138,42,.42)}
.tag-clay{color:var(--clay);background:rgba(216,101,74,.16);border-color:rgba(216,101,74,.45)}
.tag-moss{color:var(--moss);background:rgba(127,169,91,.16);border-color:rgba(127,169,91,.45)}

.media-frame{
  position:relative;overflow:hidden;
  aspect-ratio:16/10;
  border:1px solid var(--line-strong);
  border-radius:var(--radius);
  background:linear-gradient(140deg,rgba(23,16,43,.95),rgba(8,7,15,.92));
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}
.media-frame img{
  width:100%;height:100%;object-fit:cover;
  filter:saturate(1.15) contrast(1.05);
}
.media-frame::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    linear-gradient(180deg,rgba(8,7,15,0) 52%,rgba(8,7,15,.7)),
    repeating-linear-gradient(0deg,rgba(8,7,15,.2) 0 2px,transparent 2px 4px);
  opacity:.85;
}
.media-frame figcaption{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:.6rem .8rem;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.12em;
  color:var(--cream);
  background:linear-gradient(180deg,transparent,rgba(8,7,15,.85));
}

.rail{
  display:flex;gap:.8rem;
  overflow-x:auto;overscroll-behavior-x:contain;
  padding-block:.4rem;
  scrollbar-color:var(--purple) transparent;
}
.rail > *{flex:0 0 auto}

.breadcrumb{padding-block:1.1rem 0}
.breadcrumb-list{
  display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;
  color:var(--stone);
}
.breadcrumb-item{display:inline-flex;align-items:center;gap:.5rem}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:rgba(169,163,184,.45)}
.breadcrumb-link{color:var(--stone);transition:color .18s var(--ease)}
.breadcrumb-link:hover{color:var(--blue)}
.breadcrumb-current{color:var(--cream)}

.prose{max-width:72ch}
.prose p{margin-bottom:1.05em;color:var(--cream-soft)}
.prose h2{
  margin:1.7em 0 .6em;
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(1.35rem,2.2vw,1.9rem);letter-spacing:.03em;
  text-shadow:1px 1px 0 var(--ink),2px 2px 0 rgba(179,108,255,.34);
}
.prose h3{margin:1.3em 0 .5em;font-size:1.1rem;font-weight:700;color:var(--cream)}
.prose ul{display:grid;gap:.5rem;margin:0 0 1.2em}
.prose li{position:relative;padding-left:1.2rem;color:var(--cream-soft)}
.prose li::before{
  content:"";position:absolute;left:0;top:.62em;
  width:.5rem;height:.5rem;border-radius:1px;
  background:var(--blue);box-shadow:0 0 8px rgba(39,211,245,.75);
}
.prose a{color:var(--blue);border-bottom:1px solid rgba(39,211,245,.5)}
.prose a:hover{color:var(--cream);border-color:var(--purple)}

[data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(3rem,7vw,5.5rem);
  color:var(--cream);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(23,16,43,.4),rgba(23,16,43,.96) 34%,var(--deck));
}
.footer-perf{
  height:16px;
  background-image:radial-gradient(circle at 9px 8px, rgba(169,163,184,.55) 2.4px, transparent 2.6px);
  background-size:28px 16px;
  background-position:center;
  opacity:.55;
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,2fr);
  gap:clamp(1.6rem,4vw,3.5rem);
  padding-block:clamp(1.8rem,4vw,2.8rem) clamp(1.4rem,3vw,2.2rem);
}
.footer-brand{display:flex;flex-direction:column;gap:.9rem;min-width:0}
.footer-mark{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(1.35rem,2.4vw,1.9rem);letter-spacing:.05em;line-height:1.2;
  text-shadow:2px 2px 0 var(--ink),3px 3px 0 rgba(179,108,255,.42);
}
.footer-summary{max-width:36ch;font-size:.94rem;line-height:1.8;color:var(--stone)}
.footer-badges{display:flex;flex-wrap:wrap;gap:.5rem}
.badge{
  display:inline-flex;align-items:center;
  padding:.22rem .68rem;border-radius:999px;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em;
  border:1px solid currentColor;
}
.badge-teal{color:var(--teal);background:rgba(92,225,192,.1)}
.badge-orange{color:var(--orange);background:rgba(255,138,42,.12)}

.footer-nav{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(140px,1fr));
  gap:clamp(1rem,2.5vw,2rem);
}
.footer-col{min-width:0}
.footer-col-title{
  margin-bottom:.85rem;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.24em;
  text-transform:uppercase;color:var(--purple);
}
.footer-list{display:flex;flex-direction:column;gap:.55rem;padding-left:.85rem}
.footer-link{
  position:relative;
  font-size:.94rem;color:rgba(246,241,228,.8);
  transition:color .18s var(--ease),text-shadow .18s var(--ease);
}
.footer-link::before{
  content:"";position:absolute;left:-.85rem;top:.62em;
  width:.4rem;height:.4rem;border-radius:1px;
  background:var(--blue);
  opacity:0;transform:scale(.4);
  transition:opacity .18s var(--ease),transform .18s var(--ease);
}
.footer-link:hover{color:var(--cream);text-shadow:0 0 12px rgba(39,211,245,.55)}
.footer-link:hover::before{opacity:1;transform:scale(1)}

.footer-contact{
  display:grid;
  grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);
  gap:clamp(1rem,2.5vw,1.6rem);
  align-items:stretch;
  padding-bottom:clamp(1.6rem,3vw,2.4rem);
}
.contact-ticket{
  padding:1.1rem clamp(1rem,2vw,1.5rem) 1.2rem;
  border:1px solid var(--line-strong);
  border-left:1px dashed rgba(169,163,184,.6);
  border-radius:var(--radius);
  background:rgba(8,7,15,.6);
  box-shadow:var(--shadow-card);
}
.ticket-label{
  margin-bottom:.7rem;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.26em;
  text-transform:uppercase;color:var(--orange);
}
.contact-list{display:grid;gap:.55rem}
.contact-row{display:grid;grid-template-columns:4.2rem minmax(0,1fr);gap:.6rem;align-items:baseline}
.contact-key{font-size:.82rem;color:var(--stone)}
.contact-value{
  display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;
  font-size:.92rem;color:var(--cream);
  word-break:break-word;
}
.copy-btn{
  padding:.12rem .55rem;
  border:1px solid rgba(39,211,245,.45);border-radius:999px;
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.12em;
  color:var(--blue);
  transition:background-color .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.copy-btn:hover{background:rgba(39,211,245,.16);box-shadow:0 0 16px -4px rgba(39,211,245,.9)}
.copy-btn[data-copied]{color:var(--teal);border-color:var(--teal);background:rgba(92,225,192,.14)}

.footer-support{
  display:flex;flex-direction:column;justify-content:center;gap:.9rem;
  padding:1.2rem clamp(1rem,2vw,1.5rem);
  border:1px dashed var(--line-strong);
  border-radius:var(--radius);
  background:linear-gradient(135deg,rgba(179,108,255,.14),rgba(39,211,245,.07));
}
.support-note{font-size:.88rem;line-height:1.78;color:var(--stone)}

.footer-bottom{border-top:1px dashed var(--line);background:rgba(8,7,15,.6)}
.footer-bottom-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.6rem;
  padding-block:1rem;
}
.footer-icp{font-size:.78rem;letter-spacing:.12em;color:var(--stone)}
.footer-copy{font-size:.78rem;color:var(--stone)}

/* ---------- 8. 响应式 ---------- */
@media (min-width:861px){
  .site-header{position:sticky;top:0}
}

@media (max-width:1024px){
  .brand-tag{display:none}
  .nav-link{padding:.5rem .58rem;font-size:.88rem}
  .nav-link::after{left:.58rem;right:.58rem}
}

@media (max-width:900px){
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-contact{grid-template-columns:minmax(0,1fr)}
  .footer-summary{max-width:none}
}

@media (max-width:860px){
  .nav-toggle{display:inline-flex}
  .nav-deck-inner{justify-content:space-between;padding-block:.55rem;gap:.6rem}
  .primary-nav{
    position:absolute;
    left:calc(-1 * var(--pad));
    right:calc(-1 * var(--pad));
    top:calc(100% + 1px);
    display:none;
    z-index:45;
    padding:.6rem var(--pad) 1rem;
    border-block:1px solid var(--line-strong);
    background:linear-gradient(180deg,var(--deck-2),var(--deck));
    box-shadow:0 30px 60px -30px rgba(0,0,0,.95);
  }
  .primary-nav[data-open]{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:.1rem}
  .nav-item{border-bottom:1px dashed var(--line)}
  .nav-item:last-child{border-bottom:0}
  .nav-link{display:block;padding:.78rem .6rem;font-size:1rem}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{border-radius:0;box-shadow:none;box-shadow:inset 3px 0 0 var(--ink)}
  .strip-mid{display:none}
  .grid-2,.grid-3{grid-template-columns:minmax(0,1fr)}
}

@media (max-width:620px){
  .header-strip{font-size:.64rem;letter-spacing:.1em}
  .strip-links{gap:.7rem}
  .brand-name{letter-spacing:.05em}
  .brand-sub{font-size:.56rem;letter-spacing:.24em}
  .nav-cta{font-size:.74rem;padding:.45rem .7rem}
  .contact-row{grid-template-columns:minmax(0,1fr);gap:.15rem}
  .contact-key{font-size:.75rem;letter-spacing:.14em}
  .footer-badges{gap:.4rem}
}

/* ---------- 9. 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;
  }
  [data-reveal]{opacity:1;transform:none}
  .read-progress-fill{transition:none}
}