*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
img,svg,video,canvas{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit}
:where(a,button,[tabindex]){-webkit-tap-highlight-color:transparent}

:root{
  --pitch-950:#061A12;
  --pitch-800:#0C2B1F;
  --pitch-600:#1A5A3E;
  --lime-400:#C8FF3D;
  --lime-200:#E6FF9E;
  --cream-50:#FBF8EF;
  --cream-100:#F5F0E3;
  --charcoal-900:#1B1D1A;
  --ink-brown:#2A211B;
  --signal-orange:#D94A22;
  --signal-orange-deep:#A93416;
  --glass-light:rgba(251,248,239,.14);

  --font-display:"Barlow Condensed","Oswald","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-editorial:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-body:"Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  --font-data:"IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --shell-max:1240px;
  --gutter:clamp(16px,4vw,40px);
  --frame:12px;
  --line:rgba(27,29,26,.16);
  --line-dark:rgba(251,248,239,.16);
  --ease:cubic-bezier(.22,.72,.24,1);
}

html.nav-open{overflow:hidden}

body{
  background:var(--cream-50);
  color:var(--charcoal-900);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

/* 页面左右深绿框架线：框架式导航的视觉边框 */
body::before{
  content:"";
  position:fixed;
  inset:0;
  border-left:var(--frame) solid var(--pitch-950);
  border-right:var(--frame) solid var(--pitch-950);
  pointer-events:none;
  z-index:80;
}
@media (max-width:640px){
  :root{--frame:6px}
}

:focus-visible{outline:2px solid var(--signal-orange);outline-offset:3px}
.site-header :focus-visible,
.site-footer :focus-visible{outline-color:var(--lime-400)}
.section--dark :focus-visible,
.section--board :focus-visible{outline-color:var(--lime-400)}

/* ============ 排版 ============ */
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1.12;
  color:var(--ink-brown);
}
h1{font-size:clamp(34px,5.4vw,72px)}
h2{font-size:clamp(26px,3.4vw,40px)}
h3{font-size:clamp(20px,2.2vw,26px)}
h4{font-size:clamp(17px,1.6vw,20px);letter-spacing:0}
p{max-width:70ch}
.num,[data-num]{font-family:var(--font-data);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

.section--dark h1,.section--dark h2,.section--dark h3,.section--dark h4,
.section--board h1,.section--board h2,.section--board h3,.section--board h4,
.site-footer h2{color:var(--cream-50)}

/* ============ 容器与分区 ============ */
.container{
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{padding-block:clamp(48px,7vw,92px)}
.section--cream{background:var(--cream-50);color:var(--charcoal-900)}
.section--paper{background:var(--cream-100);color:var(--charcoal-900)}
.section--dark{background:var(--pitch-800);color:rgba(251,248,239,.82)}
.section--board{background:var(--pitch-950);color:rgba(251,248,239,.82)}

.chapter-label{
  display:inline-flex;
  align-items:baseline;
  gap:10px;
  font-family:var(--font-editorial);
  font-size:13px;
  letter-spacing:.16em;
  color:var(--ink-brown);
  margin-bottom:14px;
}
.chapter-label::before{
  content:"";
  width:28px;
  height:1px;
  background:currentColor;
  opacity:.45;
  transform:translateY(-4px);
}
.section--dark .chapter-label,
.section--board .chapter-label{color:var(--lime-200)}

/* ============ 网格 ============ */
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid-split{grid-template-columns:7fr 5fr;align-items:start}
@media (max-width:900px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-split{grid-template-columns:1fr}
}
@media (max-width:600px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:13px 22px;
  font-family:var(--font-display);
  font-size:16px;
  font-weight:700;
  letter-spacing:.08em;
  line-height:1.2;
  text-decoration:none;
  border:1px solid transparent;
  border-radius:1px;
  cursor:pointer;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{background:var(--lime-400);color:var(--pitch-950)}
.btn-primary:hover{background:var(--lime-200);transform:translateY(-1px)}
.btn-ghost{border-color:rgba(251,248,239,.32);color:var(--cream-50)}
.btn-ghost:hover{border-color:var(--lime-400);color:var(--lime-400)}
.btn-outline{border-color:rgba(27,29,26,.4);color:var(--charcoal-900)}
.btn-outline:hover{background:var(--charcoal-900);border-color:var(--charcoal-900);color:var(--cream-50)}
.btn-sm{padding:9px 16px;font-size:14px;letter-spacing:.06em}

/* ============ 面包屑 ============ */
.breadcrumb{font-family:var(--font-data);font-size:12.5px;letter-spacing:.05em;color:rgba(42,33,27,.7)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:inline-flex;align-items:center}
.breadcrumb li+li::before{content:"/";margin-right:8px;opacity:.4}
.breadcrumb a{text-decoration:none;border-bottom:1px solid transparent}
.breadcrumb a:hover{border-bottom-color:currentColor;color:var(--signal-orange-deep)}
.section--dark .breadcrumb,.section--board .breadcrumb{color:rgba(251,248,239,.62)}

/* ============ 图片容器 ============ */
.media-frame{
  position:relative;
  overflow:hidden;
  background:var(--pitch-800);
  border-radius:2px;
  aspect-ratio:16/10;
  isolation:isolate;
}
.media-frame img,
.media-frame svg,
.media-frame video{width:100%;height:100%;object-fit:cover}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}
.media-frame--glass::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:46%;
  background:linear-gradient(to top,rgba(6,26,18,.86),rgba(6,26,18,0));
  pointer-events:none;
}
.media-frame__cap{
  position:absolute;
  left:14px;
  bottom:12px;
  z-index:1;
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--lime-200);
}
.media-frame[data-img-placeholder]::before{
  content:"球场素材位";
  position:absolute;
  inset:0;
  display:grid;
  place-items:center;
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.2em;
  color:rgba(230,255,158,.5);
  background:
    repeating-linear-gradient(135deg,rgba(200,255,61,.05) 0 14px,transparent 14px 28px);
}

/* ============ 标签 / 资料表 ============ */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  font-family:var(--font-data);
  font-size:11.5px;
  letter-spacing:.06em;
  border:1px solid rgba(27,29,26,.22);
  color:var(--ink-brown);
  border-radius:1px;
  white-space:nowrap;
}
.tag--lime{background:var(--lime-400);border-color:var(--lime-400);color:var(--pitch-950)}
.tag--orange{background:var(--signal-orange);border-color:var(--signal-orange);color:#fff}
.section--dark .tag,.section--board .tag{border-color:rgba(251,248,239,.24);color:var(--cream-50)}

.data-table{
  width:100%;
  border-collapse:collapse;
  font-family:var(--font-data);
  font-variant-numeric:tabular-nums;
  font-size:14px;
}
.data-table caption{
  text-align:left;
  font-family:var(--font-editorial);
  font-size:13px;
  letter-spacing:.12em;
  color:var(--ink-brown);
  padding-bottom:10px;
}
.data-table th,
.data-table td{
  padding:12px 14px;
  text-align:left;
  border-bottom:1px solid var(--line);
}
.data-table thead th{
  font-size:11.5px;
  letter-spacing:.12em;
  color:rgba(42,33,27,.62);
  border-bottom:1px solid rgba(27,29,26,.4);
  font-weight:400;
  text-transform:uppercase;
}
.data-table tbody tr:nth-child(even){background:var(--cream-100)}
.data-table td.is-money{color:var(--signal-orange-deep);font-weight:700}

/* ============ 正文 ============ */
.prose{max-width:68ch;font-size:17px;line-height:1.8;color:var(--charcoal-900)}
.prose>*+*{margin-top:1.1em}
.prose h2{margin-top:2em}
.prose h3{margin-top:1.6em}
.prose ul,.prose ol{padding-left:1.3em;list-style:revert}
.prose li+li{margin-top:.4em}
.prose a{color:var(--signal-orange-deep);text-decoration:underline;text-underline-offset:3px}
.prose strong{color:var(--ink-brown)}
.prose blockquote{
  margin-inline:0;
  padding:14px 0 14px 20px;
  border-left:3px solid var(--lime-400);
  font-family:var(--font-editorial);
  color:var(--ink-brown);
}

/* ============ 筛选 ============ */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px}
.filter-btn{
  padding:9px 16px;
  font-family:var(--font-display);
  font-size:15px;
  font-weight:700;
  letter-spacing:.08em;
  background:transparent;
  border:1px solid rgba(27,29,26,.24);
  color:var(--charcoal-900);
  border-radius:1px;
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.filter-btn:hover{border-color:var(--pitch-950)}
.filter-btn[aria-pressed="true"]{background:var(--pitch-950);border-color:var(--pitch-950);color:var(--lime-400)}
.filter-bar--on-dark .filter-btn{border-color:rgba(251,248,239,.28);color:var(--cream-50)}
.filter-bar--on-dark .filter-btn:hover{border-color:var(--lime-400)}
.filter-bar--on-dark .filter-btn[aria-pressed="true"]{background:var(--lime-400);border-color:var(--lime-400);color:var(--pitch-950)}
.is-filtered-out{display:none !important}
[data-filter-status]{
  font-family:var(--font-data);
  font-size:12.5px;
  letter-spacing:.05em;
  color:rgba(42,33,27,.66);
}

/* ============ 跳转链接 ============ */
.skip-link{
  position:absolute;
  left:50%;
  top:0;
  z-index:300;
  transform:translate(-50%,-140%);
  padding:10px 20px;
  background:var(--lime-400);
  color:var(--pitch-950);
  font-family:var(--font-display);
  font-weight:700;
  letter-spacing:.08em;
  text-decoration:none;
  transition:transform .2s var(--ease);
}
.skip-link:focus{transform:translate(-50%,8px)}

/* ============ 头部 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--pitch-950);
  color:var(--cream-50);
  border-bottom:1px solid rgba(200,255,61,.18);
}
.header-bar{
  max-width:var(--shell-max);
  margin-inline:auto;
  padding:14px var(--gutter);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}

.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:inherit;min-width:0}
.brand-mark{
  position:relative;
  width:40px;
  height:40px;
  flex:none;
  background:var(--lime-400);
  border-radius:1px;
  overflow:hidden;
}
.brand-mark::before{
  content:"";
  position:absolute;
  left:50%;
  top:0;
  bottom:0;
  width:1px;
  background:rgba(6,26,18,.38);
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:9px;
  border:1px solid rgba(6,26,18,.38);
  border-radius:50%;
}
.brand-copy{display:flex;flex-direction:column;min-width:0}
.brand-name{
  font-family:var(--font-display);
  font-size:21px;
  font-weight:700;
  letter-spacing:.03em;
  line-height:1.1;
  color:var(--cream-50);
}
.brand-sub{
  font-family:var(--font-data);
  font-size:10.5px;
  letter-spacing:.14em;
  color:rgba(200,255,61,.72);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.header-tools{display:flex;align-items:center;gap:10px;flex:none}

.update-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 12px;
  border:1px solid rgba(200,255,61,.4);
  background:rgba(200,255,61,.08);
  color:var(--lime-200);
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.04em;
  text-decoration:none;
  border-radius:1px;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.update-badge:hover{background:rgba(200,255,61,.18);border-color:var(--lime-400);color:var(--lime-400)}
.update-dot{
  width:7px;
  height:7px;
  flex:none;
  border-radius:50%;
  background:var(--lime-400);
  animation:badge-pulse 2.8s ease-in-out infinite;
}
@keyframes badge-pulse{
  0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(200,255,61,.5)}
  50%{opacity:.5;box-shadow:0 0 0 5px rgba(200,255,61,0)}
}
.update-time{
  font-variant-numeric:tabular-nums;
  padding-left:8px;
  border-left:1px solid rgba(200,255,61,.3);
  color:var(--lime-400);
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 13px;
  background:transparent;
  border:1px solid rgba(251,248,239,.3);
  color:var(--cream-50);
  font-family:var(--font-display);
  font-weight:700;
  font-size:14px;
  letter-spacing:.1em;
  border-radius:1px;
  cursor:pointer;
}
.nav-toggle:hover{border-color:var(--lime-400);color:var(--lime-400)}
.nav-toggle-bars{display:inline-flex;flex-direction:column;gap:3px;width:16px}
.nav-toggle-bars span{display:block;height:2px;background:currentColor}

/* 导航：桌面横向围栏 */
.site-nav{
  background:var(--pitch-800);
  border-top:1px solid rgba(251,248,239,.1);
}
.nav-head{display:none}
.nav-list{
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
  display:flex;
  align-items:stretch;
  overflow-x:auto;
  scrollbar-width:none;
}
.nav-list::-webkit-scrollbar{display:none}
.nav-item{flex:0 0 auto}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  padding:15px 18px;
  color:rgba(251,248,239,.74);
  text-decoration:none;
  font-family:var(--font-display);
  font-size:16px;
  font-weight:700;
  letter-spacing:.06em;
  white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-index{
  font-family:var(--font-data);
  font-size:10.5px;
  font-weight:400;
  letter-spacing:.04em;
  color:rgba(200,255,61,.5);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:18px;
  right:18px;
  bottom:0;
  height:3px;
  background:var(--lime-400);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--lime-200);background:rgba(251,248,239,.04)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--lime-400)}
.nav-link[aria-current="page"] .nav-index{color:var(--lime-400)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.nav-foot{display:none}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--pitch-950);
  color:rgba(251,248,239,.76);
  margin-top:0;
}
.site-footer::before{
  content:"";
  display:block;
  height:6px;
  background:repeating-linear-gradient(135deg,var(--lime-400) 0 10px,var(--pitch-800) 10px 22px);
  opacity:.9;
}
.footer-top{padding-block:clamp(38px,5vw,64px) clamp(28px,3.6vw,44px)}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1.35fr 1fr;
  gap:clamp(24px,3.4vw,48px);
}
.footer-col{min-width:0}
.footer-brand{
  font-family:var(--font-display);
  font-size:24px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--cream-50);
  line-height:1.1;
}
.footer-desc{
  margin-top:12px;
  font-size:14.5px;
  line-height:1.75;
  color:rgba(251,248,239,.68);
  max-width:34ch;
}
.footer-stamp{
  margin-top:18px;
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:7px 12px;
  border:1px solid rgba(200,255,61,.32);
  background:rgba(200,255,61,.06);
  border-radius:1px;
  font-family:var(--font-data);
  font-size:11.5px;
  letter-spacing:.05em;
}
.footer-stamp-key{color:rgba(230,255,158,.68)}
.footer-stamp-val{color:var(--lime-400)}
.footer-title{
  font-family:var(--font-data);
  font-size:11.5px;
  font-weight:400;
  letter-spacing:.18em;
  color:var(--lime-400);
  margin-bottom:16px;
  padding-bottom:10px;
  border-bottom:1px solid rgba(251,248,239,.14);
}
.footer-links{display:flex;flex-direction:column;gap:9px}
.footer-links a{
  display:inline-block;
  font-size:14.5px;
  text-decoration:none;
  color:rgba(251,248,239,.76);
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-links a:hover{color:var(--lime-400);transform:translateX(3px)}
.footer-contact{display:flex;flex-direction:column;gap:14px}
.footer-item{display:flex;flex-direction:column;gap:5px}
.footer-label{
  font-family:var(--font-data);
  font-size:10.5px;
  letter-spacing:.14em;
  color:rgba(251,248,239,.45);
}
.footer-val{font-size:14px;color:rgba(251,248,239,.82);line-height:1.6}
.footer-note{
  margin-top:16px;
  font-size:12.5px;
  line-height:1.7;
  color:rgba(251,248,239,.5);
  max-width:30ch;
}
.footer-icp{
  margin-top:18px;
  display:inline-block;
  padding:6px 11px;
  border:1px solid rgba(251,248,239,.2);
  border-radius:1px;
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.05em;
  color:rgba(251,248,239,.66);
}
.footer-base{
  border-top:1px solid rgba(251,248,239,.12);
  padding-block:18px 22px;
  background:rgba(0,0,0,.2);
}
.footer-base-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
}
.footer-copy,
.footer-meta{
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.05em;
  color:rgba(251,248,239,.5);
}

/* 复制芯片 */
.copy-chip{
  display:inline-flex;
  align-items:center;
  gap:9px;
  max-width:100%;
  padding:5px 10px;
  background:transparent;
  border:1px dashed rgba(251,248,239,.3);
  border-radius:1px;
  color:var(--cream-50);
  font-family:var(--font-data);
  font-size:12.5px;
  letter-spacing:.02em;
  cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.copy-chip:hover{border-color:var(--lime-400);color:var(--lime-400);background:rgba(200,255,61,.06)}
.copy-text{overflow-wrap:anywhere;text-align:left}
.copy-hint{
  flex:none;
  font-size:10.5px;
  letter-spacing:.1em;
  color:var(--lime-400);
  padding-left:8px;
  border-left:1px solid rgba(200,255,61,.34);
}
.copy-chip.is-copied{border-style:solid;border-color:var(--lime-400);background:rgba(200,255,61,.12)}
.copy-chip.is-copied .copy-hint{color:var(--lime-200)}

/* ============ 滚动进度与显现 ============ */
.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  width:0;
  height:3px;
  background:var(--lime-400);
  box-shadow:0 0 12px rgba(200,255,61,.55);
  z-index:200;
  pointer-events:none;
  transition:width .1s linear;
}
.js-ready [data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
.js-ready [data-reveal].is-revealed{opacity:1;transform:none}

/* ============ 移动端 ============ */
@media (max-width:900px){
  .nav-toggle{display:inline-flex}

  .site-nav{
    position:fixed;
    inset:0;
    z-index:120;
    display:flex;
    flex-direction:column;
    padding:calc(16px + env(safe-area-inset-top,0px)) 0 calc(28px + env(safe-area-inset-bottom,0px));
    background:var(--pitch-950);
    border:none;
    overflow-y:auto;
    transform:translateY(-100%);
    visibility:hidden;
    transition:transform .38s var(--ease),visibility .38s var(--ease);
  }
  .site-header[data-open] .site-nav{
    transform:translateY(0);
    visibility:visible;
  }

  .nav-head{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:0 var(--gutter) 18px;
    border-bottom:1px solid rgba(251,248,239,.14);
  }
  .nav-head-title{
    font-family:var(--font-data);
    font-size:11.5px;
    letter-spacing:.2em;
    color:var(--lime-400);
  }
  .nav-close{
    display:inline-flex;
    align-items:center;
    padding:7px 14px;
    background:transparent;
    border:1px solid rgba(251,248,239,.32);
    color:var(--cream-50);
    font-family:var(--font-display);
    font-weight:700;
    letter-spacing:.1em;
    border-radius:1px;
    cursor:pointer;
  }
  .nav-close:hover{border-color:var(--lime-400);color:var(--lime-400)}

  .nav-list{
    flex-direction:column;
    padding:12px var(--gutter) 0;
    overflow:visible;
  }
  .nav-item{flex:none;width:100%}
  .nav-link{
    width:100%;
    padding:17px 0;
    font-size:23px;
    letter-spacing:.02em;
    border-bottom:1px solid rgba(251,248,239,.1);
  }
  .nav-index{font-size:12px;color:rgba(200,255,61,.6)}
  .nav-link::after{left:0;right:0;height:2px}
  .nav-link[aria-current="page"]{color:var(--lime-400)}

  .nav-foot{
    display:block;
    margin-top:auto;
    padding:26px var(--gutter) 0;
  }
  .nav-foot-note{
    font-family:var(--font-data);
    font-size:12px;
    letter-spacing:.04em;
    color:rgba(251,248,239,.5);
    margin-bottom:14px;
  }

  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-col--brand{grid-column:1 / -1}
  .footer-desc{max-width:44ch}
}
@media (max-width:640px){
  body{font-size:16px}
  .header-bar{padding-block:11px;gap:10px}
  .brand-mark{width:34px;height:34px}
  .brand-name{font-size:18px}
  .brand-sub{font-size:9.5px;letter-spacing:.1em}
  .update-badge{padding:5px 9px;font-size:11px;gap:6px}
  .update-time{padding-left:6px}
  .nav-toggle-label{display:none}
  .footer-grid{grid-template-columns:1fr}
  .footer-base-inner{flex-direction:column;align-items:flex-start;gap:6px}
}

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