/* ==========================================================================
   亿博体育中文站 · 共享样式表 /assets/site.css
   框架式导航 + Bento 模块 + 近单色墨蓝体系
   ========================================================================== */

/* ---------- 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,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
[hidden]{display:none!important}

/* ---------- 变量 ---------- */
:root{
  --red:#D62828;
  --red-dark:#9C1A1F;
  --wine:#5E0F14;
  --ink:#0B1626;
  --ink-deep:#060D18;
  --slate:#16273D;
  --fog:#EEF3F8;
  --body:#CBD8E6;
  --muted:#8CA0B8;
  --mint:#21E6A6;
  --orange:#FF8A3D;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.20);
  --r-sm:4px;
  --r-md:12px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --rail:96px;
  --header-h:72px;
  --container:1320px;
  --sans:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Noto Sans Mono CJK SC",monospace;
}

/* ---------- 基础排版 ---------- */
body{
  background:var(--ink);
  color:var(--body);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:64px 64px;
}
:focus-visible{outline:2px solid var(--mint);outline-offset:3px;border-radius:2px}
h1,.h1{font-size:clamp(40px,7.4vw,88px);line-height:.98;font-weight:900;letter-spacing:-.02em;color:var(--fog)}
h2,.h2{font-size:clamp(26px,3.6vw,52px);line-height:1.06;font-weight:900;letter-spacing:-.02em;color:var(--fog)}
h3,.h3{font-size:clamp(19px,2vw,26px);line-height:1.2;font-weight:800;letter-spacing:-.01em;color:var(--fog)}
h4,.h4{font-size:17px;font-weight:700;color:var(--fog)}
.display{font-size:clamp(40px,7.4vw,88px);line-height:.98;font-weight:900;letter-spacing:-.02em;color:var(--fog)}
.lead{font-size:clamp(17px,1.5vw,20px);color:#D3DEEA;max-width:62ch}
.prose{max-width:68ch;color:var(--body)}
.prose p + p{margin-top:1em}
.prose a{border-bottom:1px solid rgba(33,230,166,.45);color:var(--mint)}
.mono,.num{font-family:var(--mono);font-variant-numeric:tabular-nums}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- 布局容器 ---------- */
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:20px}
@media (min-width:768px){.container{padding-inline:32px}}
@media (min-width:1200px){.container{padding-inline:40px}}
.section{padding-block:clamp(48px,7vw,96px)}
.section--tight{padding-block:clamp(32px,4vw,56px)}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:20px;margin-bottom:32px;padding-bottom:16px;border-bottom:1px solid var(--line);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);
  font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--mint);
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--mint)}
.ticks{
  height:9px;opacity:.5;
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.22) 0 1px,transparent 1px 16px);
}
.band{background:var(--ink-deep);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding-block:clamp(32px,4vw,60px)}
.band--slate{background:var(--slate)}
.band--red{background:linear-gradient(120deg,rgba(214,40,40,.22),rgba(94,15,20,.38) 65%),var(--ink-deep)}

/* ---------- 网格与 Bento ---------- */
.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-6{grid-column:span 6}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}
@media (max-width:767px){
  .grid{gap:16px}
  [class*="span-"]{grid-column:1/-1}
}
.bento{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:20px;align-items:stretch}
@media (max-width:900px){.bento{gap:16px}}
.panel{
  position:relative;background:var(--slate);border:1px solid var(--line);
  border-radius:var(--r-md);padding:24px;
  transition:border-color 220ms var(--ease),background 220ms var(--ease),transform 320ms var(--ease);
}
.panel:hover{border-color:rgba(33,230,166,.35)}
.panel--focus{
  background:linear-gradient(160deg,rgba(214,40,40,.18),rgba(22,39,61,.92) 58%),var(--slate);
  border-color:rgba(214,40,40,.42);box-shadow:var(--shadow);
}
.panel--ghost{background:transparent}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:14px}
.panel-num{font-family:var(--mono);font-size:12px;letter-spacing:.18em;color:var(--muted);text-transform:uppercase}
.bevel{clip-path:polygon(0 0,100% 0,100% calc(100% - 28px),calc(100% - 28px) 100%,0 100%)}
.strip{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  padding:14px 20px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:rgba(255,255,255,.02);font-size:14px;
}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 18px;border:1px solid var(--line-strong);border-radius:var(--r-sm);
  font-size:14px;font-weight:600;letter-spacing:.02em;color:var(--fog);
  background:transparent;cursor:pointer;white-space:nowrap;
  transition:background 220ms var(--ease),color 220ms var(--ease),border-color 220ms var(--ease);
}
.btn-primary{background:var(--red);border-color:var(--red);color:#fff}
.btn-primary:hover{background:var(--red-dark);border-color:var(--red-dark)}
.btn-primary:active{background:var(--wine)}
.btn-ghost{border-color:var(--line-strong);color:var(--fog)}
.btn-ghost:hover{border-color:rgba(33,230,166,.5);color:var(--mint)}
.btn-sm{padding:8px 14px;font-size:13px}
.btn-block{width:100%}

/* ---------- 标签 / 状态 / 数据 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;
  border:1px solid var(--line-strong);border-radius:var(--r-sm);
  font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--muted);text-transform:uppercase;
}
.tag--mint{border-color:rgba(33,230,166,.45);background:rgba(33,230,166,.08);color:var(--mint)}
.tag--orange{border-color:rgba(255,138,61,.45);background:rgba(255,138,61,.09);color:var(--orange)}
.tag--red{border-color:rgba(214,40,40,.5);background:rgba(214,40,40,.14);color:#FF8A8A}
.stat{display:flex;flex-direction:column;gap:6px}
.stat-value{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:clamp(26px,3.2vw,44px);font-weight:700;line-height:1;color:var(--fog)}
.stat-value--mint{color:var(--mint)}
.stat-value--orange{color:var(--orange)}
.stat-label{font-size:13px;letter-spacing:.04em;color:var(--muted)}

/* ---------- 筛选 / 标签页 / 展开组 ---------- */
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  appearance:none;border:1px solid var(--line-strong);border-radius:var(--r-sm);
  background:transparent;color:#C6D3E1;padding:7px 13px;font-size:13px;
  transition:border-color 220ms var(--ease),color 220ms var(--ease),background 220ms var(--ease);
}
.chip:hover{border-color:rgba(33,230,166,.4);color:var(--mint)}
.chip[aria-pressed="true"]{background:rgba(33,230,166,.12);border-color:rgba(33,230,166,.5);color:var(--mint)}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);overflow-x:auto;scrollbar-width:thin}
.tab{
  appearance:none;border:0;border-bottom:2px solid transparent;background:transparent;
  padding:10px 14px;font-size:14px;color:var(--muted);white-space:nowrap;
  transition:color 220ms var(--ease),border-color 220ms var(--ease);
}
.tab:hover{color:var(--fog)}
.tab[aria-selected="true"]{color:var(--fog);border-bottom-color:var(--mint)}
.accordion{border-top:1px solid var(--line)}
.acc-item{border-bottom:1px solid var(--line)}
.acc-trigger{
  position:relative;width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 4px 20px 20px;text-align:left;font-size:17px;font-weight:600;color:var(--fog);
}
.acc-trigger::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:2px;background:var(--line-strong);
  transition:background 220ms var(--ease);
}
.acc-trigger[aria-expanded="true"]::before{background:var(--mint)}
.acc-icon{
  flex:0 0 auto;width:18px;height:18px;border:1px solid var(--line-strong);border-radius:var(--r-sm);
  position:relative;transition:transform 220ms var(--ease),border-color 220ms var(--ease);
}
.acc-icon::before,.acc-icon::after{content:"";position:absolute;background:var(--muted);left:4px;right:4px;top:8px;height:1px}
.acc-icon::after{transform:rotate(90deg)}
.acc-trigger[aria-expanded="true"] .acc-icon{transform:rotate(180deg);border-color:rgba(33,230,166,.5)}
.acc-trigger[aria-expanded="true"] .acc-icon::before{background:var(--mint)}
.acc-panel{padding:0 4px 22px 20px;font-size:16px;color:var(--body)}
.acc-panel:not([hidden]){animation:panel-in 220ms var(--ease)}
@keyframes panel-in{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- 时间轴 / 对照 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:18px 0;font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--muted)}
.breadcrumb li{display:flex;align-items:center;gap:10px}
.breadcrumb li + li::before{content:"/";color:rgba(140,160,184,.5)}
.breadcrumb a:hover{color:var(--mint)}
.breadcrumb [aria-current="page"]{color:#C6D3E1}
.timeline{border-top:1px solid var(--line)}
.tl-row{
  display:grid;grid-template-columns:118px minmax(0,1fr) auto;gap:16px;align-items:center;
  padding:16px 0;border-bottom:1px solid var(--line);
}
.tl-time{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:14px;color:var(--muted)}
.tl-row[data-focus]{
  background:linear-gradient(90deg,rgba(214,40,40,.16),transparent 72%);
  border-left:2px solid var(--red);padding-left:16px;
}
@media (max-width:640px){
  .tl-row{grid-template-columns:1fr;gap:6px}
}

/* ---------- 图片容器（页面阶段放图） ---------- */
.media{
  position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--r-md);
  background:linear-gradient(120deg,#101F33,#060D18);aspect-ratio:16/9;
}
.media img{width:100%;height:100%;object-fit:cover;filter:saturate(.92) brightness(.82) contrast(1.06)}
.media--tall{aspect-ratio:4/5}
.media--wide{aspect-ratio:21/9}
.media--square{aspect-ratio:1/1}
.media-ph{
  display:grid;place-items:center;height:100%;width:100%;
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:rgba(140,160,184,.65);
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.035) 0 1px,transparent 1px 14px);
}
.media-caption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 16px;
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:#DCE6F1;
  background:linear-gradient(0deg,rgba(6,13,24,.92),rgba(6,13,24,0));
}
.media--frame::after{content:"";position:absolute;inset:10px;border:1px solid rgba(255,255,255,.14);pointer-events:none;border-radius:2px}

/* ---------- 显现动画（需 JS 开启） ---------- */
html[data-js="true"] .reveal{opacity:0;transform:translateY(14px);transition:opacity 320ms var(--ease),transform 320ms var(--ease)}
html[data-js="true"] .reveal[data-visible]{opacity:1;transform:none}

/* ==========================================================================
   头部框架
   ========================================================================== */
.skip-link{
  position:fixed;left:16px;top:-90px;z-index:200;
  background:var(--mint);color:#04120C;font-size:14px;font-weight:700;
  padding:12px 18px;border-radius:var(--r-sm);
  transition:top 220ms var(--ease);
}
.skip-link:focus{top:16px}

.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,13,24,.88);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.header-frame{
  position:relative;display:grid;grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;gap:20px;
  width:100%;max-width:var(--container);margin-inline:auto;
  padding-inline:20px;min-height:var(--header-h);
  transition:min-height 220ms var(--ease);
}
@media (min-width:768px){.header-frame{padding-inline:32px}}
@media (min-width:1200px){.header-frame{padding-inline:40px}}

.brand{display:inline-flex;align-items:center;gap:12px;padding-block:10px}
.brand-mark{
  display:grid;place-items:center;width:38px;height:38px;flex:0 0 auto;
  background:var(--red);color:#fff;font-weight:900;font-size:20px;border-radius:var(--r-sm);
}
.brand-lockup{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:19px;font-weight:900;letter-spacing:-.01em;color:var(--fog)}
.brand-sub{
  font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);transition:opacity 220ms var(--ease);
}

/* 左侧竖排边框骨 */
.frame-rail{display:none}
@media (min-width:1200px){
  body{padding-left:var(--rail)}
  .frame-rail{
    display:flex;flex-direction:column;align-items:center;
    position:fixed;left:0;top:0;bottom:0;width:var(--rail);z-index:90;
    background:var(--ink-deep);border-right:1px solid var(--line);
    padding-bottom:22px;
  }
  .brand-mark{display:none}
}
.rail-mark{
  display:grid;place-items:center;width:100%;height:var(--header-h);
  background:var(--red);color:#fff;font-weight:900;font-size:26px;
  transition:height 220ms var(--ease);
}
.rail-brand{
  writing-mode:vertical-rl;margin-top:26px;
  font-family:var(--mono);font-size:11px;letter-spacing:.34em;text-transform:uppercase;
  color:var(--muted);
}
.rail-rule{
  flex:1 1 auto;width:1px;margin:18px 0;
  background:linear-gradient(180deg,rgba(33,230,166,.55),rgba(33,230,166,0) 78%);
}
.rail-code{
  writing-mode:vertical-rl;
  font-family:var(--mono);font-size:10px;letter-spacing:.24em;
  color:rgba(140,160,184,.7);
}
.site-header[data-scrolled] .rail-mark{height:56px}

/* 主导航 */
.primary-nav{display:flex;align-items:center;justify-content:center;min-width:0}
.nav-list{display:flex;align-items:stretch;gap:2px}
.nav-link{
  position:relative;display:flex;flex-direction:column;gap:2px;
  padding:10px 13px;border:1px solid transparent;border-radius:var(--r-sm);
  transition:border-color 220ms var(--ease),background 220ms var(--ease),padding 220ms var(--ease);
}
.nav-cn{font-size:14px;font-weight:600;letter-spacing:.02em;color:var(--fog);white-space:nowrap}
.nav-en{font-family:var(--mono);font-size:9.5px;letter-spacing:.18em;text-transform:uppercase;color:rgba(140,160,184,.75)}
.nav-link:hover{border-color:rgba(33,230,166,.4);background:rgba(33,230,166,.05)}
.nav-link[aria-current="page"]{background:rgba(33,230,166,.08);border-color:rgba(33,230,166,.3)}
.nav-link[aria-current="page"] .nav-cn{color:var(--mint);font-weight:800}
.nav-link[aria-current="page"]::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;background:var(--mint);
}
.nav-dot{
  position:absolute;top:8px;right:8px;width:6px;height:6px;border-radius:50%;
  background:var(--orange);box-shadow:0 0 0 3px rgba(255,138,61,.18);
}
.nav-foot{display:none}

/* 工具栏 */
.header-utils{display:flex;align-items:center;gap:10px}
.header-status{
  display:inline-flex;align-items:center;gap:7px;padding-right:6px;
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--muted);
}
.dot{width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 3px rgba(33,230,166,.15)}
@media (max-width:1120px){.header-status{display:none}}
@media (max-width:1023px){.utils-help,.utils-cta{display:none}}

/* 移动按钮 */
.nav-toggle{
  display:none;align-items:center;gap:10px;min-height:44px;
  padding:10px 12px;border:1px solid var(--line-strong);border-radius:var(--r-sm);
  color:var(--fog);font-size:13px;font-weight:600;
  transition:border-color 220ms var(--ease),color 220ms var(--ease);
}
.nav-toggle:hover{border-color:rgba(33,230,166,.5);color:var(--mint)}
.nav-toggle-bars{position:relative;width:18px;height:2px;background:currentColor;transition:background 220ms var(--ease)}
.nav-toggle-bars::before,.nav-toggle-bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
  transition:transform 220ms var(--ease);
}
.nav-toggle-bars::before{top:-6px}
.nav-toggle-bars::after{top:6px}
.site-header[data-open] .nav-toggle-bars{background:transparent}
.site-header[data-open] .nav-toggle-bars::before{transform:translateY(6px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bars::after{transform:translateY(-6px) rotate(-45deg)}

/* 滚动进度 */
.scroll-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;overflow:hidden;pointer-events:none}
.scroll-progress-bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--red),var(--mint));
}

/* 滚动收窄 */
.site-header[data-scrolled] .header-frame{min-height:56px}
.site-header[data-scrolled] .brand-sub{opacity:0;visibility:hidden}
.site-header[data-scrolled] .nav-link{padding:7px 12px}
.site-header[data-scrolled] .nav-en{display:none}
.site-header[data-scrolled] .brand-mark{width:34px;height:34px;font-size:18px}

/* 移动导航面板 */
@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .primary-nav{
    position:absolute;left:0;right:0;top:100%;z-index:70;
    display:flex;flex-direction:column;align-items:stretch;
    background:var(--ink-deep);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    padding:8px 20px 20px;max-height:calc(100vh - 60px);overflow-y:auto;
    opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-8px);
    transition:opacity 220ms var(--ease),transform 220ms var(--ease),visibility 220ms linear;
  }
  .site-header[data-open] .primary-nav{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}
  .nav-list{flex-direction:column;gap:0}
  .nav-link{
    flex-direction:row;align-items:center;justify-content:space-between;
    padding:15px 2px;border:0;border-bottom:1px solid var(--line);border-radius:0;
  }
  .nav-link:hover{background:transparent;border-color:transparent;border-bottom-color:rgba(33,230,166,.4)}
  .nav-link[aria-current="page"]{
    background:linear-gradient(90deg,rgba(33,230,166,.12),transparent 62%);
    border-color:transparent;border-bottom-color:var(--line);
  }
  .nav-link[aria-current="page"]::after{left:0;right:auto;top:12px;bottom:12px;width:2px;height:auto}
  .nav-cn{font-size:16px}
  .nav-dot{position:static;order:3;margin-left:auto}
  .nav-foot{display:flex;flex-direction:column;gap:10px;margin-top:18px}
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer{
  position:relative;margin-top:clamp(56px,8vw,120px);
  background:var(--ink-deep);border-top:1px solid var(--line);color:var(--body);
}
.footer-inner{padding-block:clamp(40px,6vw,80px)}
.footer-top{display:grid;gap:40px;grid-template-columns:1fr}
@media (min-width:900px){.footer-top{grid-template-columns:minmax(260px,1fr) 2.2fr;gap:56px}}
.footer-mark{
  display:grid;place-items:center;width:44px;height:44px;
  background:var(--red);color:#fff;font-weight:900;font-size:22px;border-radius:var(--r-sm);
}
.footer-brand-name{margin-top:16px;font-size:20px;font-weight:800;letter-spacing:-.01em;color:var(--fog)}
.footer-brand-note{margin-top:10px;max-width:40ch;font-size:14px;line-height:1.75;color:var(--muted)}
.footer-cta{margin-top:20px}
.footer-cols{display:grid;gap:32px 24px;grid-template-columns:repeat(2,minmax(0,1fr))}
@media (min-width:760px){.footer-cols{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (min-width:1100px){.footer-cols{grid-template-columns:repeat(5,minmax(0,1fr))}}
.footer-col-title{
  padding-bottom:10px;border-bottom:1px solid var(--line);
  font-family:var(--mono);font-size:12px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:#C6D3E1;
}
.footer-links{margin-top:14px;display:flex;flex-direction:column;gap:9px}
.footer-links a{font-size:14px;color:#C6D3E1;transition:color 220ms var(--ease)}
.footer-links a:hover{color:var(--mint)}
.footer-contact{
  display:flex;flex-wrap:wrap;gap:10px 28px;margin-top:40px;padding-top:22px;
  border-top:1px solid var(--line);font-size:14px;color:var(--muted);
}
.footer-contact-item{position:relative;padding-left:14px}
.footer-contact-item::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;background:rgba(33,230,166,.6)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:16px 28px;margin-top:26px;padding-top:20px;border-top:1px solid var(--line);
}
.footer-legal{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.footer-legal a{transition:color 220ms var(--ease)}
.footer-legal a:hover{color:var(--mint)}
.footer-legal span{color:rgba(140,160,184,.45)}
.footer-meta{
  flex:1 1 320px;font-family:var(--mono);font-size:12px;letter-spacing:.03em;
  color:rgba(140,160,184,.85);line-height:1.7;
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 14px;border:1px solid var(--line-strong);border-radius:var(--r-sm);
  color:var(--fog);font-size:13px;
  transition:border-color 220ms var(--ease),color 220ms var(--ease),opacity 220ms var(--ease),visibility 220ms linear;
}
.to-top span{font-family:var(--mono)}
.to-top:hover{border-color:rgba(33,230,166,.5);color:var(--mint)}
.to-top[data-hidden]{opacity:0;visibility:hidden;pointer-events:none}

/* ==========================================================================
   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;
  }
  html[data-js="true"] .reveal{opacity:1;transform:none}
  .scroll-progress{display:none}
}