/* ==========================================================================
   千赢体育VIP — 共享样式 /assets/site.css
   基准：深海墨蓝底 + 电光青 + 活力橙 + 数据绿；斜切 -6deg；38:62 分屏；印刷边框
   ========================================================================== */

/* ---------- 1. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;background:#060A14}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;border-spacing:0;width:100%}
:focus-visible{outline:2px solid #28E4D9;outline-offset:3px}

/* ---------- 2. 变量 ---------- */
:root{
  --bg-deep:#060A14;
  --bg-night:#0C1526;
  --bg-card:#141F33;
  --line:#26334D;
  --cyan:#28E4D9;
  --cyan-deep:#0E8F96;
  --orange:#FF6A2B;
  --green:#33E39B;
  --paper:#F2F6FC;
  --ink:#E9EFF8;
  --ink-dim:#93A4BF;
  --content:1180px;
  --angle:-6deg;
  --font-head:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:var(--font-head);
  --font-mono:"JetBrains Mono","IBM Plex Mono","SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
  --t-fast:.18s;
  --shadow-panel:0 24px 48px -34px rgba(0,0,0,.95);
}

/* ---------- 3. 基底与背景节奏 ---------- */
body{
  min-height:100vh;
  background-color:var(--bg-deep);
  background-image:
    radial-gradient(110% 80% at 100% -8%, rgba(40,228,217,.10), transparent 58%),
    radial-gradient(90% 70% at -12% 6%, rgba(14,143,150,.14), transparent 62%),
    linear-gradient(180deg,#060A14 0%,#0C1526 42%,#060A14 100%);
  background-attachment:fixed;
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:-20vh -20vw;z-index:0;pointer-events:none;
  background:
    linear-gradient(-6deg,transparent 40%,rgba(40,228,217,.055) 40.2%,rgba(40,228,217,.055) 50%,transparent 50.2%),
    linear-gradient(-6deg,transparent 66%,rgba(255,106,43,.05) 66.2%,rgba(255,106,43,.05) 69.6%,transparent 69.8%);
  animation:band-drift 16s var(--ease) infinite alternate;
}
@keyframes band-drift{from{transform:translate3d(-2%,0,0)}to{transform:translate3d(2%,-3%,0)}}
.site-header,.site-footer,#main-content{position:relative;z-index:1}

/* ---------- 4. 中文排版 ---------- */
h1,h2,h3,h4{font-family:var(--font-head);font-weight:900;line-height:1.16;letter-spacing:-.01em;color:var(--ink)}
h1{font-size:clamp(32px,5.4vw,76px)}
h2{font-size:clamp(26px,3.6vw,44px)}
h3{font-size:clamp(19px,2.2vw,24px)}
p{max-width:74ch}
.mono,.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:0}
.eyebrow{display:inline-flex;align-items:center;gap:.6rem;font-family:var(--font-mono);font-size:12.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan)}
.eyebrow::before{content:"";width:26px;height:2px;background:linear-gradient(90deg,var(--cyan),var(--orange));transform:skewX(var(--angle))}
.lede{font-size:clamp(17px,1.4vw,20px);line-height:1.7;color:var(--ink-dim);max-width:62ch}

/* ---------- 5. 布局 ---------- */
.wrap{width:100%;max-width:var(--content);margin-inline:auto;padding-inline:clamp(1rem,4vw,2.5rem)}
.section{position:relative;padding-block:clamp(3.5rem,8vw,7rem)}
.section--tight{padding-block:clamp(2.25rem,5vw,4rem)}
.section--rule{border-top:1px solid var(--line)}
.section--night{background:linear-gradient(180deg,rgba(12,21,38,.92),rgba(6,10,20,.42));border-block:1px solid var(--line)}
.section--paper{background:linear-gradient(180deg,#F7FAFF,#E9F0FA);color:#111a2b}
.section--paper h1,.section--paper h2,.section--paper h3{color:#0b1424}
.section--paper p,.section--paper .lede{color:#3b4759}
.section--paper .eyebrow{color:#0E8F96}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:1rem 2rem;margin-bottom:clamp(1.5rem,3vw,2.5rem)}
.section-head__title{font-size:clamp(24px,3vw,38px);font-weight:900}
.section-head__meta{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.14em;color:var(--ink-dim)}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(1rem,2vw,1.75rem)}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}
.split{display:grid;grid-template-columns:minmax(0,38fr) minmax(0,62fr);gap:clamp(1.5rem,4vw,3.5rem)}
.split__aside{position:relative;min-width:0}
.split__main{min-width:0}
@media (min-width:981px){
  .split__aside{padding-right:clamp(1.5rem,3vw,3rem)}
  .split__aside::after{content:"";position:absolute;top:0;right:0;bottom:0;width:1px;background:linear-gradient(180deg,transparent,var(--line) 12%,var(--line) 88%,transparent)}
}

/* ---------- 6. 按钮 ---------- */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.72rem 1.3rem;border:1px solid var(--line);color:var(--ink);
  font-size:14px;font-weight:700;letter-spacing:.06em;cursor:pointer;
  transform:skewX(var(--angle));
  transition:background-color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease),filter var(--t-fast) var(--ease);
}
.btn__label{display:inline-block;transform:skewX(calc(-1 * var(--angle)))}
.btn--accent{background:linear-gradient(120deg,#FF6A2B,#FF9052);border-color:#FF6A2B;color:#170702;box-shadow:0 14px 30px -18px rgba(255,106,43,.95)}
.btn--accent:hover{filter:brightness(1.08)}
.btn--outline{border-color:rgba(40,228,217,.6);color:var(--cyan)}
.btn--outline:hover{background:rgba(40,228,217,.12)}
.btn--quiet{border-color:var(--line);color:var(--ink-dim)}
.btn--quiet:hover{color:var(--ink);border-color:rgba(40,228,217,.45)}

/* ---------- 7. 头部：命令栏 ---------- */
.skip-link{position:absolute;left:1rem;top:-100vh;z-index:120;padding:.6rem 1rem;background:var(--cyan);color:#04121a;font-size:14px;font-weight:700;transition:top var(--t-fast) var(--ease)}
.skip-link:focus{top:.5rem}
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,20,.88);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.header-utility{
  max-height:44px;overflow:hidden;
  background:linear-gradient(90deg,rgba(14,143,150,.20),rgba(12,21,38,.92));
  border-bottom:1px solid rgba(38,51,77,.7);
  transition:max-height .3s var(--ease),opacity .3s var(--ease);
}
.header-utility__inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.35rem 1rem;padding-block:.28rem;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--ink-dim)}
.header-utility__status{display:inline-flex;align-items:center;gap:.5rem}
.header-utility__legal{color:var(--ink-dim)}
.pulse-dot{position:relative;display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--green);animation:pulse 2.6s var(--ease) infinite}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(51,227,155,.5)}
  70%{box-shadow:0 0 0 9px rgba(51,227,155,0)}
  100%{box-shadow:0 0 0 0 rgba(51,227,155,0)}
}
.site-header[data-condensed="true"] .header-utility{max-height:0;opacity:0;border-bottom-color:transparent}
.header-bar__inner{display:flex;align-items:center;justify-content:space-between;gap:clamp(.75rem,2vw,1.5rem);min-height:64px}
.brand{display:inline-flex;align-items:center;gap:.65rem;flex:0 0 auto;color:var(--ink)}
.brand__mark{display:grid;place-items:center;width:34px;height:34px;color:var(--cyan);border:1px solid rgba(40,228,217,.5);background:linear-gradient(140deg,rgba(40,228,217,.16),rgba(255,106,43,.12));clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);transition:color var(--t-fast) var(--ease)}
.brand:hover .brand__mark{color:var(--orange)}
.brand__text{display:block;line-height:1.15}
.brand__name{display:block;font-size:17px;font-weight:900;letter-spacing:.02em}
.brand__line{display:block;font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--ink-dim)}
.nav-toggle{display:none;align-items:center;gap:.55rem;padding:.45rem .7rem;border:1px solid var(--line);background:rgba(12,21,38,.8);color:var(--ink);cursor:pointer}
.nav-toggle:hover{border-color:rgba(40,228,217,.55);color:var(--cyan)}
.nav-toggle__bars{display:grid;gap:4px;width:18px}
.nav-toggle__bars i{display:block;height:2px;background:currentColor;transition:transform var(--t-fast) var(--ease),opacity var(--t-fast) var(--ease)}
.nav-toggle__label{font-size:13px;font-weight:700;letter-spacing:.14em}
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(2){opacity:0}
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.primary-nav{display:flex;align-items:center;gap:clamp(.5rem,1.6vw,1.25rem)}
.primary-nav__list{display:flex;align-items:center;gap:.1rem}
.primary-nav__item{position:relative}
.primary-nav__link{position:relative;display:flex;align-items:baseline;gap:.4rem;padding:.55rem .68rem;color:var(--ink-dim);font-size:14.5px;font-weight:600;transition:color var(--t-fast) var(--ease),background-color var(--t-fast) var(--ease)}
.primary-nav__index{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.06em;color:var(--cyan-deep)}
.primary-nav__label{white-space:nowrap}
.primary-nav__link::after{content:"";position:absolute;left:.68rem;right:.68rem;bottom:.12rem;height:2px;background:linear-gradient(90deg,var(--cyan),var(--orange));transform:scaleX(0);transform-origin:left;transition:transform var(--t-fast) var(--ease)}
.primary-nav__link:hover{color:var(--ink);background:rgba(40,228,217,.07)}
.primary-nav__link:hover::after{transform:scaleX(1)}
.primary-nav__link[aria-current="page"]{color:var(--cyan);background:rgba(40,228,217,.09)}
.primary-nav__link[aria-current="page"] .primary-nav__index{color:var(--cyan)}
.primary-nav__link[aria-current="page"]::after{transform:scaleX(1)}
.primary-nav__cta{flex:0 0 auto}
.scroll-progress{position:absolute;left:0;bottom:-1px;height:2px;width:0;background:linear-gradient(90deg,var(--cyan),var(--orange));z-index:2}

/* ---------- 8. 页脚 ---------- */
.site-footer{margin-top:clamp(3rem,7vw,6rem);background:linear-gradient(180deg,rgba(6,10,20,0),rgba(12,21,38,.85) 16%,#050810);border-top:1px solid var(--line)}
.footer-edge{height:8px;background:repeating-linear-gradient(135deg,rgba(40,228,217,.5) 0 10px,rgba(255,106,43,.35) 10px 20px);opacity:.7}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.8fr) minmax(0,1.1fr);gap:clamp(1.75rem,4vw,3.5rem);padding-block:clamp(2.5rem,5vw,4rem)}
.footer-brand__name{font-size:22px;font-weight:900;letter-spacing:.02em}
.footer-brand__line{margin-top:.25rem;font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--cyan)}
.footer-brand__closing{margin-top:1rem;max-width:34ch;color:var(--ink-dim);font-size:15px;line-height:1.75}
.footer-sync{margin-top:1rem;display:inline-flex;align-items:center;gap:.55rem;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--ink-dim)}
.footer-nav__title,.footer-contact__title{padding-bottom:.6rem;border-bottom:1px solid var(--line);font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--cyan)}
.footer-nav__list{margin-top:.9rem;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.4rem .9rem}
.footer-nav__link{display:inline-block;padding-block:.18rem;color:var(--ink-dim);font-size:14.5px;transition:color var(--t-fast) var(--ease),transform var(--t-fast) var(--ease)}
.footer-nav__link:hover{color:var(--cyan);transform:translateX(3px)}
.footer-contact__list{margin-top:.9rem;display:grid;gap:.85rem}
.footer-contact__item{display:flex;flex-wrap:wrap;align-items:center;gap:.3rem .75rem}
.footer-contact__key{min-width:64px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;color:var(--ink-dim)}
.footer-contact__value{font-size:14.5px;color:var(--ink)}
.footer-contact__note{margin-top:.9rem;font-size:13px;color:var(--ink-dim)}
.copy-btn{padding:.2rem .55rem;border:1px solid var(--line);color:var(--ink-dim);font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;cursor:pointer;transition:border-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease)}
.copy-btn:hover{border-color:var(--cyan);color:var(--cyan)}
.copy-btn.is-done{border-color:var(--green);color:var(--green)}
.footer-legal{border-top:1px solid var(--line);background:rgba(6,10,20,.72)}
.footer-legal__inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.75rem;padding-block:1.1rem}
.footer-legal__note{font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--ink-dim)}
.to-top{padding:.4rem .8rem;border:1px solid var(--line);color:var(--ink-dim);font-size:12.5px;letter-spacing:.1em;cursor:pointer;transition:border-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease)}
.to-top:hover{border-color:var(--cyan);color:var(--cyan)}

/* ---------- 9. 面板 / 卡片 / 标签 / 数据 ---------- */
.panel{position:relative;background:linear-gradient(180deg,rgba(20,31,51,.95),rgba(12,21,38,.95));border:1px solid var(--line);box-shadow:var(--shadow-panel)}
.panel__head{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.9rem 1.15rem;border-bottom:1px solid var(--line);background:rgba(6,10,20,.5)}
.panel__title{font-size:15px;font-weight:800;letter-spacing:.04em}
.panel__body{padding:clamp(1.1rem,2.2vw,1.75rem)}
.card{position:relative;padding:1.35rem 1.35rem 1.45rem;background:var(--bg-card);border:1px solid var(--line);box-shadow:var(--shadow-panel);transition:transform var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease)}
.card::before{content:"";position:absolute;left:0;top:0;width:38px;height:3px;background:var(--cyan);transform:skewX(var(--angle))}
.card:hover{transform:translateY(-3px);border-color:rgba(40,228,217,.5)}
.card__label{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--cyan)}
.card__title{margin-top:.5rem;font-size:19px;font-weight:800;line-height:1.35;color:var(--ink)}
.card__body{margin-top:.55rem;font-size:15px;color:var(--ink-dim)}
.card__meta{margin-top:.9rem;display:flex;flex-wrap:wrap;gap:.5rem}
.tag{display:inline-flex;align-items:center;gap:.35rem;padding:.24rem .6rem;border:1px solid var(--line);background:rgba(6,10,20,.6);color:var(--ink-dim);font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em}
.tag--cyan{color:var(--cyan);border-color:rgba(40,228,217,.45)}
.tag--orange{color:var(--orange);border-color:rgba(255,106,43,.45)}
.tag--green{color:var(--green);border-color:rgba(51,227,155,.45)}
.chip{display:inline-flex;align-items:center;gap:.4rem;padding:.3rem .7rem;background:rgba(40,228,217,.1);border:1px solid rgba(40,228,217,.35);color:var(--cyan);font-size:13px;font-weight:600}
.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.stat{padding:1.1rem 1.15rem;background:var(--bg-night)}
.stat__value{font-family:var(--font-mono);font-size:clamp(26px,3vw,34px);font-weight:700;line-height:1.1;letter-spacing:-.02em;color:var(--ink)}
.stat__value em{font-style:normal;color:var(--cyan)}
.stat__label{margin-top:.35rem;font-size:13px;letter-spacing:.04em;color:var(--ink-dim)}

/* ---------- 10. 表格 ---------- */
.table-scroll{overflow-x:auto;border:1px solid var(--line);background:var(--bg-card)}
.data-table{min-width:640px;font-size:15px}
.data-table caption{padding:.85rem 1rem;text-align:left;font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--ink-dim);border-bottom:1px solid var(--line)}
.data-table th,.data-table td{padding:.85rem 1rem;border-bottom:1px solid rgba(38,51,77,.8);text-align:left;vertical-align:top}
.data-table thead th{background:rgba(12,21,38,.9);font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--cyan)}
.data-table tbody tr{transition:background-color var(--t-fast) var(--ease)}
.data-table tbody tr:hover{background:rgba(40,228,217,.06)}
.data-table tbody tr:last-child td{border-bottom:0}
.data-table .num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;color:var(--cyan)}

/* ---------- 11. 筛选按钮组 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem;padding:.55rem;border:1px solid var(--line);background:rgba(20,31,51,.6)}
.filter-btn{display:inline-flex;align-items:center;gap:.45rem;padding:.42rem .85rem;border:1px solid transparent;color:var(--ink-dim);font-size:13.5px;font-weight:600;letter-spacing:.04em;cursor:pointer;transition:background-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease)}
.filter-btn:hover{color:var(--ink);background:rgba(40,228,217,.08)}
.filter-btn[aria-pressed="true"]{background:linear-gradient(120deg,var(--cyan),var(--cyan-deep));color:#04121a}
.filter-btn__count{font-family:var(--font-mono);font-size:11.5px;opacity:.75}

/* ---------- 12. 手风琴 ---------- */
.accordion{border-top:1px solid var(--line)}
.accordion__item{border-bottom:1px solid var(--line)}
.accordion__trigger{display:flex;width:100%;align-items:center;justify-content:space-between;gap:1rem;padding:1.1rem .25rem;text-align:left;font-size:17px;font-weight:700;color:var(--ink);cursor:pointer;transition:color var(--t-fast) var(--ease)}
.accordion__trigger:hover{color:var(--cyan)}
.accordion__icon{position:relative;flex:none;width:14px;height:14px}
.accordion__icon::before,.accordion__icon::after{content:"";position:absolute;background:var(--cyan)}
.accordion__icon::before{left:0;right:0;top:6px;height:2px}
.accordion__icon::after{top:0;bottom:0;left:6px;width:2px;transition:transform var(--t-fast) var(--ease),opacity var(--t-fast) var(--ease)}
.accordion__trigger[aria-expanded="true"] .accordion__icon::after{transform:scaleY(0);opacity:0}
.accordion__panel{overflow:hidden;height:0;transition:height .28s var(--ease)}
.accordion__panel-inner{max-width:70ch;padding:0 1.5rem 1.3rem .25rem;color:var(--ink-dim)}

/* ---------- 13. 面包屑 / 正文 / 纸张层 ---------- */
.breadcrumb{padding-block:1rem}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:.55rem;font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--ink-dim)}
.breadcrumb__item{display:flex;align-items:center;gap:.55rem}
.breadcrumb__item + .breadcrumb__item::before{content:"/";color:var(--line)}
.breadcrumb__link{color:var(--ink-dim);transition:color var(--t-fast) var(--ease)}
.breadcrumb__link:hover{color:var(--cyan)}
.breadcrumb__item[aria-current="page"]{color:var(--cyan)}
.prose{max-width:72ch;font-size:16.5px;line-height:1.85;color:var(--ink-dim)}
.prose > * + *{margin-top:1.05em}
.prose h2,.prose h3{color:var(--ink)}
.prose h2{margin-top:2em;font-size:clamp(20px,2.4vw,26px)}
.prose h3{margin-top:1.6em;font-size:18px}
.prose ul{display:grid;gap:.5rem}
.prose li{position:relative;padding-left:1.1rem}
.prose li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;background:var(--cyan);transform:skewX(-12deg)}
.prose a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
.paper{position:relative;padding:clamp(1.5rem,4vw,3rem);background:var(--paper);border:1px solid #cfd9e8;color:#101827;box-shadow:0 18px 40px -30px rgba(0,0,0,.9)}
.paper::after{content:"";position:absolute;left:10px;right:0;bottom:-8px;height:8px;background:repeating-linear-gradient(90deg,#cfd9e8 0 2px,transparent 2px 6px)}
.paper .prose{color:#3b4759}
.paper .prose h2,.paper .prose h3{color:#0d1526}
.paper .prose a{color:#0E8F96}

/* ---------- 14. 图片容器基础规则 ---------- */
.media-frame{
  position:relative;overflow:hidden;aspect-ratio:16/9;border:1px solid var(--line);
  background:
    linear-gradient(135deg,rgba(40,228,217,.12),rgba(14,143,150,.05) 42%,transparent 72%),
    var(--bg-card);
}
.media-frame img{width:100%;height:100%;object-fit:cover;filter:saturate(.92) contrast(1.05)}
.media-frame::after{content:"";position:absolute;inset:0;border:1px solid rgba(242,246,252,.06);pointer-events:none}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--square{aspect-ratio:1/1}
.media-frame--empty{background-image:
  repeating-linear-gradient(-6deg,rgba(38,51,77,.9) 0 2px,transparent 2px 14px),
  linear-gradient(135deg,rgba(40,228,217,.10),transparent 70%)}
.media-frame__caption{margin-top:.6rem;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--ink-dim)}
.media-frame__badge{position:absolute;left:0;bottom:0;padding:.3rem .7rem;background:rgba(6,10,20,.85);border-top:1px solid var(--line);border-right:1px solid var(--line);font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--cyan)}

/* ---------- 15. 显现动效 ---------- */
html.has-js [data-reveal]{opacity:0;transform:translate3d(-24px,0,0);transition:opacity .6s var(--ease),transform .6s var(--ease)}
html.has-js [data-reveal="up"]{transform:translate3d(0,26px,0)}
html.has-js [data-reveal="fade"]{transform:none}
html.has-js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 16. 响应式 ---------- */
@media (max-width:1180px){
  :root{--content:100%}
}
@media (min-width:641px) and (max-width:980px){
  .span-4,.span-5,.span-6{grid-column:span 6}
  .span-7,.span-8{grid-column:span 12}
}
@media (max-width:980px){
  .nav-toggle{display:inline-flex}
  .primary-nav{
    position:absolute;top:100%;left:0;right:0;z-index:55;display:block;
    padding:.4rem clamp(1rem,4vw,2.5rem) 1.2rem;
    background:linear-gradient(180deg,rgba(12,21,38,.99),rgba(6,10,20,.99));
    border-bottom:1px solid var(--line);box-shadow:0 30px 40px -30px #000;
    max-height:0;overflow:hidden;opacity:0;visibility:hidden;
    transition:max-height .32s var(--ease),opacity .22s var(--ease),visibility .32s var(--ease);
  }
  .site-header[data-open="true"] .primary-nav,
  .primary-nav[data-open="true"]{max-height:78vh;overflow-y:auto;opacity:1;visibility:visible}
  .primary-nav__list{display:block}
  .primary-nav__item{border-bottom:1px solid rgba(38,51,77,.7)}
  .primary-nav__link{padding:.95rem .25rem;font-size:16.5px}
  .primary-nav__link::after{left:0;right:auto;width:34px;bottom:.35rem}
  .primary-nav__cta{margin-top:1.1rem;width:100%}
  .split{grid-template-columns:1fr}
  .split__aside{padding-right:0}
  .footer-grid{grid-template-columns:1fr;gap:2.25rem}
  body{font-size:16px}
}
@media (max-width:640px){
  .span-4,.span-5,.span-6,.span-7,.span-8{grid-column:span 12}
  .brand__line,.header-utility__legal{display:none}
  .footer-nav__list{grid-template-columns:1fr}
  .stat-row{grid-template-columns:repeat(auto-fit,minmax(132px,1fr))}
  .footer-legal__inner{flex-direction:column;align-items:flex-start}
}

/* ---------- 17. 降低动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  body::before{animation:none}
  html.has-js [data-reveal]{opacity:1!important;transform:none!important}
}