/* =========================================================
   超凡娱乐会馆 / assets/site.css
   共享外壳：重置、设计变量、中文排版、页头、页脚、基础组件
   ========================================================= */

/* ---------- 1. 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,blockquote,dl,dd{margin:0}
ul,ol{list-style:none;padding:0}
img,svg,video{display:block;max-width:100%}
table{border-collapse:collapse;width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
main{display:block}

/* ---------- 2. 设计变量 ---------- */
:root{
  /* 色彩体系 */
  --ink:#070B1C;
  --night:#0F1832;
  --paper:#F3EADA;
  --paper-dim:#CFC6B5;
  --cyan:#33EBD6;
  --violet:#8A5CFF;
  --orange:#FF8A3D;
  --glass:rgba(255,255,255,.08);
  --glass-strong:rgba(255,255,255,.14);
  --glass-line:rgba(255,255,255,.18);
  --grid-line:#2A3A63;
  --deep-text:#141A2E;
  --deep-muted:#4C5169;
  --text:#E6EBF8;
  --text-dim:rgba(230,235,248,.68);
  --text-faint:rgba(230,235,248,.44);
  /* 字体 */
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Courier New",monospace;
  /* 尺寸与节奏 */
  --shell:min(1280px,100% - 48px);
  --gap:24px;
  --r-lg:28px;
  --r-md:18px;
  --r-sm:10px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:auto;
}

/* ---------- 3. 基座与中文排版 ---------- */
body{
  min-height:100vh;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  color:var(--text);
  background-color:var(--ink);
  background-image:
    radial-gradient(circle at 1px 1px, rgba(150,175,255,.10) 1px, transparent 1.8px),
    radial-gradient(58% 42% at 8% 2%, rgba(138,92,255,.24), transparent 64%),
    radial-gradient(50% 36% at 94% 0%, rgba(51,235,214,.16), transparent 62%),
    radial-gradient(72% 58% at 50% 114%, rgba(255,138,61,.13), transparent 70%);
  background-size:24px 24px,auto,auto,auto;
  background-attachment:fixed,fixed,fixed,fixed;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-weight:300;line-height:1.18;letter-spacing:.02em}
p{line-height:1.75}

.display{
  font-size:clamp(2.6rem,6vw,6rem);
  font-weight:200;
  line-height:1.03;
  letter-spacing:.01em;
}
.display--glow{text-shadow:0 0 26px rgba(51,235,214,.35),0 0 64px rgba(138,92,255,.24)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--cyan);
}
.lede{
  font-size:clamp(1rem,1.3vw,1.125rem);
  line-height:1.85;
  color:var(--text-dim);
  max-width:38em;
}
.coord{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--text-faint);
  white-space:nowrap;
}
.coord--dim{color:rgba(230,235,248,.26)}
.divider{height:1px;border:0;background:linear-gradient(90deg,transparent,var(--grid-line),transparent);margin:32px 0}
.coord-index{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--violet);
}
.top-link{color:var(--cyan);border-bottom:1px solid rgba(51,235,214,.4)}

/* ---------- 4. 布局工具 ---------- */
.shell{width:var(--shell);margin-inline:auto}
.section{padding:clamp(48px,7vw,96px) 0}
.split{display:grid;gap:var(--gap);grid-template-columns:minmax(0,1fr)}
.split--40-60{grid-template-columns:minmax(0,40fr) minmax(0,60fr)}
.split--62-38{grid-template-columns:minmax(0,62fr) minmax(0,38fr)}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  padding-bottom:18px;
  margin-bottom:28px;
  border-bottom:1px solid var(--grid-line);
}
.section-head__title{font-size:clamp(1.4rem,2.4vw,2rem);font-weight:300}
.prose{max-width:42em;font-size:17px;line-height:1.85;color:var(--text-dim)}
.prose p+p{margin-top:14px}
.prose strong{color:#fff;font-weight:500}
.index-rail{
  display:grid;
  gap:8px;
  align-content:start;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--text-faint);
}
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--text-faint);
  margin:0 0 20px;
}
.breadcrumbs li+li::before{content:"/";margin:0 10px;color:var(--grid-line)}
.breadcrumbs a{color:var(--text-dim)}
.breadcrumbs a:hover{color:var(--cyan)}

/* ---------- 5. 面板与组件 ---------- */
.glass{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-lg);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.glass--tint{
  background:
    linear-gradient(155deg,rgba(51,235,214,.12),rgba(138,92,255,.14)),
    var(--glass);
}
.paper{
  background:var(--paper);
  color:var(--deep-text);
  border-radius:var(--r-lg);
  border:1px solid rgba(20,26,46,.12);
  box-shadow:0 30px 70px -34px rgba(0,0,0,.75);
  padding:clamp(22px,3vw,40px);
}
.paper h1,.paper h2,.paper h3,.paper h4{color:var(--deep-text)}
.paper p{color:#2C3147}
.paper .eyebrow{color:#5A48C8}
.paper a{color:#3F3AA0}
.paper .divider{background:linear-gradient(90deg,transparent,rgba(20,26,46,.2),transparent)}
.card{
  position:relative;
  display:block;
  padding:clamp(20px,2.4vw,30px);
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--glass-line);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.card:hover{
  transform:translateY(-4px);
  border-color:rgba(51,235,214,.55);
  box-shadow:0 0 0 1px rgba(51,235,214,.22),0 26px 54px -30px rgba(51,235,214,.55);
}
.card__index{
  display:block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--violet);
  margin-bottom:10px;
}
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 18px;
  border-radius:999px;
  border:1px solid var(--glass-line);
  background:rgba(255,255,255,.06);
  color:var(--text);
  font-size:14px;
  letter-spacing:.1em;
  transition:color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.btn:hover{color:#fff;border-color:rgba(51,235,214,.6);box-shadow:0 0 26px -8px rgba(51,235,214,.7)}
.btn--cta{
  background:linear-gradient(120deg,var(--orange),#FF6B2C);
  border-color:transparent;
  color:#1B0C03;
  font-weight:500;
  box-shadow:0 12px 30px -16px rgba(255,138,61,.95);
}
.btn--cta:hover{color:#000;box-shadow:0 0 0 1px rgba(255,138,61,.6),0 14px 34px -14px rgba(255,138,61,1)}
.btn--ghost{background:transparent;border-color:rgba(51,235,214,.45);color:var(--cyan)}
.btn--quiet{background:transparent;border:0;color:var(--text-dim);text-decoration:underline;text-underline-offset:4px;padding:8px 4px}
.btn--quiet:hover{color:var(--cyan);box-shadow:none}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:7px 14px;
  border-radius:999px;
  border:1px solid var(--glass-line);
  background:rgba(255,255,255,.05);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--text-dim);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.chip:hover{color:var(--cyan);border-color:rgba(51,235,214,.55)}
.filter-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 16px;
  border-radius:999px;
  border:1px solid var(--glass-line);
  background:rgba(255,255,255,.05);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--text-dim);
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease);
}
.filter-btn:hover{color:#fff;border-color:rgba(138,92,255,.6)}
.filter-btn[aria-pressed="true"],
.filter-btn.is-active{
  color:#fff;
  border-color:rgba(51,235,214,.65);
  background:linear-gradient(120deg,rgba(138,92,255,.4),rgba(51,235,214,.26));
  box-shadow:0 0 24px -8px rgba(138,92,255,.9);
}
[data-filter-item][hidden]{display:none}
.tag{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  padding:4px 10px;
  border-radius:6px;
  background:rgba(138,92,255,.16);
  border:1px solid rgba(138,92,255,.45);
  color:#CDBBFF;
}
.tag--cyan{background:rgba(51,235,214,.12);border-color:rgba(51,235,214,.45);color:#9BF6EA}
.tag--orange{background:rgba(255,138,61,.14);border-color:rgba(255,138,61,.5);color:#FFC49A}

/* 图片容器基础规则（页面阶段放入 <img>） */
.media{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-md);
  border:1px solid var(--glass-line);
  aspect-ratio:16/9;
  background:
    radial-gradient(70% 90% at 20% 10%,rgba(138,92,255,.35),transparent 60%),
    linear-gradient(135deg,#101B3C,#0A1129 58%,#180F30);
}
.media--wide{aspect-ratio:21/9}
.media--square{aspect-ratio:1/1}
.media--tall{aspect-ratio:3/4}
.media--cut{clip-path:polygon(0 0,100% 0,100% 86%,88% 100%,0 100%)}
.media--glow{box-shadow:0 0 0 1px rgba(51,235,214,.25),0 30px 70px -34px rgba(51,235,214,.55)}
.media__img{width:100%;height:100%;object-fit:cover}
.media__label{
  position:absolute;
  left:14px;
  bottom:12px;
  z-index:2;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--cyan);
}
.media__caption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--text-faint);
}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,11,28,0) 42%,rgba(7,11,28,.78));
  pointer-events:none;
}

/* 折叠面板 */
.accordion{
  border:1px solid var(--glass-line);
  border-radius:var(--r-md);
  background:var(--glass);
  margin-bottom:12px;
  overflow:hidden;
}
.accordion+ .accordion{margin-top:0}
.accordion>summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:16px 20px;
  cursor:pointer;
  font-size:16px;
  list-style:none;
}
.accordion>summary::-webkit-details-marker{display:none}
.accordion>summary::after{
  content:"+";
  font-family:var(--font-mono);
  font-size:18px;
  color:var(--cyan);
}
.accordion[open]>summary::after{content:"–"}
.accordion__body{
  padding:14px 20px 20px;
  border-top:1px solid rgba(255,255,255,.08);
  color:var(--text-dim);
  font-size:15px;
}

/* 对照矩阵 */
.matrix-wrap{width:100%;overflow-x:auto;border-radius:var(--r-md)}
.matrix{font-size:14px;min-width:520px}
.matrix th,.matrix td{
  padding:12px 14px;
  border:1px solid var(--grid-line);
  text-align:left;
  vertical-align:top;
}
.matrix thead th{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  font-weight:400;
  color:var(--cyan);
  background:rgba(51,235,214,.07);
}
.paper .matrix th,.paper .matrix td{border-color:rgba(20,26,46,.14)}
.paper .matrix thead th{color:#3F3A9E;background:rgba(20,26,46,.05)}

/* ---------- 6. Skip link ---------- */
.skip-link{
  position:absolute;
  left:50%;
  top:0;
  transform:translate(-50%,-160%);
  z-index:200;
  padding:10px 20px;
  border-radius:0 0 12px 12px;
  background:var(--cyan);
  color:#04211D;
  font-size:14px;
  letter-spacing:.08em;
  transition:transform .2s var(--ease);
}
.skip-link:focus{transform:translate(-50%,0)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}
.skip-link:focus-visible{outline-color:var(--orange)}

/* ---------- 7. 页头 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background-image:
    radial-gradient(64% 150% at 50% 0%,rgba(138,92,255,.22),transparent 72%),
    linear-gradient(180deg,rgba(7,11,28,.95),rgba(7,11,28,.80));
  border-bottom:1px solid var(--grid-line);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
}
.header-halo{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(51,235,214,.85),rgba(138,92,255,.85),transparent);
  pointer-events:none;
}
.header-bar{
  width:var(--shell);
  margin-inline:auto;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:18px;
  padding:16px 0 12px;
}
.header-bar__left{display:flex;align-items:center;gap:14px;min-width:0}
.header-bar__right{display:flex;align-items:center;gap:10px;justify-content:flex-end;min-width:0}

.brand{
  display:grid;
  justify-items:center;
  gap:7px;
  padding:0 10px;
  text-align:center;
}
.brand__mark{
  position:relative;
  display:grid;
  place-items:center;
  width:26px;
  height:26px;
  border:1px solid rgba(51,235,214,.55);
  border-radius:8px;
  transform:rotate(45deg);
  box-shadow:0 0 20px -6px rgba(51,235,214,.9);
}
.brand__dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--orange);
  box-shadow:0 0 12px rgba(255,138,61,.95);
}
.brand__name{
  font-size:clamp(1.05rem,2.1vw,1.5rem);
  font-weight:300;
  letter-spacing:.28em;
  text-indent:.28em;
  color:#fff;
  text-shadow:0 0 26px rgba(51,235,214,.4);
}
.brand__en{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.32em;
  color:rgba(51,235,214,.75);
}
.utility{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--text-dim);
  padding:6px 2px;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.utility:hover{color:var(--cyan);border-bottom-color:rgba(51,235,214,.6)}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 14px;
  border-radius:999px;
  border:1px solid var(--glass-line);
  background:rgba(255,255,255,.06);
  color:var(--text);
  font-size:13px;
  letter-spacing:.12em;
}
.nav-toggle__lines{position:relative;display:block;width:16px;height:10px}
.nav-toggle__lines::before,
.nav-toggle__lines::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:1.5px;
  border-radius:2px;
  background:currentColor;
  transition:transform .22s var(--ease);
}
.nav-toggle__lines::before{top:0}
.nav-toggle__lines::after{bottom:0}
.nav-toggle[aria-expanded="true"]{border-color:rgba(51,235,214,.6);color:var(--cyan)}
.nav-toggle[aria-expanded="true"] .nav-toggle__lines::before{transform:translateY(4.2px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__lines::after{transform:translateY(-4.2px) rotate(-45deg)}

.site-nav{
  position:relative;
  width:var(--shell);
  margin-inline:auto;
  padding:0 0 14px;
}
.site-nav__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:clamp(8px,2.2vw,30px);
  counter-reset:nav;
}
.site-nav__item{counter-increment:nav}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:7px;
  padding:8px 2px;
  font-size:14px;
  letter-spacing:.14em;
  color:var(--text-dim);
  transition:color .2s var(--ease);
}
.nav-link::before{
  content:"0" counter(nav);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.08em;
  color:rgba(51,235,214,.55);
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:#fff}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.nav-link[aria-current="page"]::before{color:var(--orange)}
.site-nav__rule{
  display:block;
  height:1px;
  margin-top:6px;
  background:linear-gradient(90deg,transparent,rgba(42,58,99,.95),transparent);
}
.scroll-meter{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:rgba(255,255,255,.06);
  overflow:hidden;
}
.scroll-meter__fill{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--cyan),var(--violet) 58%,var(--orange));
  box-shadow:0 0 14px rgba(51,235,214,.85);
  transition:width .12s linear;
}

/* ---------- 8. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,110px);
  overflow:hidden;
  background-image:linear-gradient(180deg,rgba(15,24,50,.65),rgba(7,11,28,.98));
  background-color:var(--night);
  border-top:1px solid var(--grid-line);
}
.footer-halo{
  position:absolute;
  top:-30%;
  left:-12%;
  width:62%;
  height:150%;
  background:radial-gradient(50% 50% at 50% 50%,rgba(138,92,255,.24),transparent 70%);
  pointer-events:none;
  animation:halo-drift 18s ease-in-out infinite;
}
@keyframes halo-drift{
  0%{transform:translate3d(0,0,0)}
  50%{transform:translate3d(4%,-3%,0)}
  100%{transform:translate3d(0,0,0)}
}
.footer-inner{
  position:relative;
  width:var(--shell);
  margin-inline:auto;
  padding:clamp(40px,6vw,72px) 0 28px;
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.55fr) minmax(0,1.05fr);
  gap:clamp(24px,4vw,56px);
  padding-bottom:36px;
  border-bottom:1px solid rgba(42,58,99,.85);
}
.footer-brand__name{
  font-size:clamp(1.3rem,2.4vw,1.9rem);
  font-weight:300;
  letter-spacing:.24em;
  color:#fff;
  text-shadow:0 0 26px rgba(51,235,214,.3);
}
.footer-brand__en{
  margin-top:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.28em;
  color:rgba(51,235,214,.75);
}
.footer-brand__coords{
  margin-top:12px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--text-faint);
}
.footer-ticket{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:20px;
  padding:11px 20px;
  border-radius:999px;
  border:1px solid rgba(255,138,61,.6);
  background:linear-gradient(120deg,rgba(255,138,61,.22),rgba(255,107,44,.06));
  color:#FFD3B4;
  font-size:14px;
  letter-spacing:.12em;
  transition:color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.footer-ticket:hover{color:#fff;border-color:var(--orange);box-shadow:0 0 32px -10px rgba(255,138,61,.95)}
.footer-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,3vw,40px)}
.footer-col__title{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:400;
  letter-spacing:.2em;
  color:var(--cyan);
}
.footer-col__list{display:grid;gap:10px}
.footer-col__list a{
  display:inline-block;
  font-size:15px;
  color:var(--text-dim);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col__list a:hover{color:#fff;transform:translateX(3px)}
.footer-contact{display:grid;gap:10px;align-content:start}
.footer-contact__label{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.2em;
  color:var(--violet);
}
.footer-contact__row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-dim)}
.footer-contact__key{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--text-faint);
  min-width:34px;
}
.footer-contact__value{color:#DCE3F5;word-break:break-all}
.copy-btn{
  padding:3px 10px;
  border-radius:999px;
  border:1px solid var(--glass-line);
  background:rgba(51,235,214,.08);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--cyan);
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.copy-btn:hover{border-color:var(--cyan)}
.copy-btn.is-done{color:var(--orange);border-color:rgba(255,138,61,.65)}
.footer-note{
  margin-top:6px;
  font-size:13px;
  line-height:1.7;
  color:var(--text-faint);
  max-width:34em;
}
.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 22px;
  padding-top:22px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--text-faint);
}
.footer-legal__links{display:flex;flex-wrap:wrap;gap:18px}
.footer-legal a{color:var(--text-dim)}
.footer-legal a:hover{color:var(--cyan)}

/* ---------- 9. 入场动效协议 ---------- */
[data-reveal]{opacity:1}
html[data-enhanced="true"] [data-reveal]{
  opacity:0;
  transform:translateY(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
html[data-enhanced="true"] [data-reveal].is-visible{opacity:1;transform:none}
html[data-enhanced="true"] [data-reveal][data-reveal-delay="1"]{transition-delay:.08s}
html[data-enhanced="true"] [data-reveal][data-reveal-delay="2"]{transition-delay:.16s}
html[data-enhanced="true"] [data-reveal][data-reveal-delay="3"]{transition-delay:.24s}
html[data-enhanced="true"] [data-reveal][data-reveal-delay="4"]{transition-delay:.32s}
html[data-enhanced="true"] [data-reveal][data-reveal-delay="5"]{transition-delay:.4s}

/* ---------- 10. 响应式 ---------- */
@media (max-width:1080px){
  .header-bar__left{display:none}
  .header-bar{grid-template-columns:auto 1fr auto}
  .brand{justify-items:start;text-align:left;padding-left:2px}
  .utility--records{display:none}
}
@media (max-width:1024px){
  .footer-top{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .footer-contact{grid-column:1 / -1}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .split,.split--40-60,.split--62-38{grid-template-columns:minmax(0,1fr)}
  .site-nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    width:100%;
    padding:0;
    max-height:0;
    overflow:hidden;
    visibility:hidden;
    opacity:0;
    background-image:linear-gradient(180deg,rgba(15,24,50,.99),rgba(7,11,28,.99));
    border-bottom:1px solid var(--glass-line);
    box-shadow:0 34px 64px -34px rgba(0,0,0,.95);
    transition:max-height .3s var(--ease),opacity .22s var(--ease),visibility .3s var(--ease);
  }
  .site-nav[data-open]{
    max-height:min(78vh,560px);
    overflow-y:auto;
    visibility:visible;
    opacity:1;
  }
  .site-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:10px 24px 24px;
  }
  .site-nav__item{border-bottom:1px solid rgba(255,255,255,.07)}
  .nav-link{
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:15px 2px;
    font-size:16px;
  }
  .nav-link::after{display:none}
  .nav-link::before{order:2;font-size:11px}
  .nav-link[aria-current="page"]{color:var(--cyan)}
  .site-nav__rule{display:none}
}
@media (max-width:760px){
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-col__list{gap:8px}
}
@media (max-width:640px){
  :root{--shell:min(1280px,100% - 32px);--gap:16px}
  body{font-size:16px}
  .header-bar{padding:12px 0 10px;gap:12px}
  .brand__en{display:none}
  .utility{display:none}
  .footer-top{grid-template-columns:minmax(0,1fr)}
  .footer-legal{justify-content:flex-start}
}
@media (max-width:420px){
  .brand__name{letter-spacing:.2em;text-indent:.2em;font-size:1rem}
  .btn{padding:9px 14px;font-size:13px}
}

/* ---------- 11. 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  .footer-halo{animation:none}
  html[data-enhanced="true"] [data-reveal]{opacity:1;transform:none;transition:none}
  .card:hover{transform:none}
  .footer-col__list a:hover{transform:none}
}