/* ==========================================================================
   冠竞赛场 /assets/site.css
   语汇：夜战看台 × 数据仪表盘 × 取景器刻度
   ========================================================================== */

/* 1. 设计令牌 -------------------------------------------------------------- */
:root{
  --ink:#0B1F1A;
  --ink-2:#14332B;
  --line:#1E4A3E;
  --lime:#C8FF3D;
  --lime-deep:#7FA81C;
  --orange:#FF6A2B;
  --white:#F2F7F3;
  --char:#10140F;
  --muted:#7E8F86;
  --signal:#2BD9C0;

  --text:var(--white);
  --text-dim:rgba(242,247,243,.78);
  --text-mute:var(--muted);

  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-num:ui-monospace,SFMono-Regular,"Cascadia Mono","Roboto Mono",Menlo,Consolas,"Liberation Mono",monospace;

  --gutter:clamp(16px,4.2vw,56px);
  --maxw:1320px;
  --header-h:80px;
  --header-h-stuck:60px;
  --cut:14px;
  --ease:cubic-bezier(.4,0,.2,1);
}

/* 2. Reset --------------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 16px);
}
body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
table{border-collapse:collapse;width:100%}
[id="main-content"]{scroll-margin-top:calc(var(--header-h) + 16px)}
html.nav-open{overflow:hidden}

/* 3. 中文排版与基础文本 ------------------------------------------------------ */
.prose{
  max-width:64ch;
  font-size:17px;
  line-height:1.8;
  color:var(--text-dim);
}
.prose p + p{margin-top:1.1em}
.prose h2,.prose h3{
  color:var(--text);
  line-height:1.25;
  letter-spacing:-.01em;
}
.prose h2{margin:1.9em 0 .55em;font-size:26px;font-weight:800}
.prose h3{margin:1.5em 0 .4em;font-size:20px;font-weight:700}
.prose ul,.prose ol{margin:1em 0;padding-left:1.15em;list-style:disc}
.prose ol{list-style:decimal}
.prose li + li{margin-top:.4em}
.prose a{
  color:var(--lime);
  border-bottom:1px solid rgba(200,255,61,.4);
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.prose a:hover{border-bottom-color:var(--lime)}
.prose strong{color:var(--text);font-weight:700}

/* 4. 通用排版原子 ---------------------------------------------------------- */
.display{
  font-family:var(--font-sans);
  font-weight:800;
  font-stretch:87.5%;
  letter-spacing:-.02em;
  line-height:.92;
  text-transform:uppercase;
}
.display--xl{font-size:clamp(56px,12vw,160px)}
.display--l{font-size:clamp(40px,7vw,88px)}
.display--m{font-size:clamp(28px,4vw,48px)}

.label{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:10px;
  font-weight:800;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--lime);
}
.num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  font-size:10px;
  font-weight:800;
  letter-spacing:.16em;
  color:var(--lime);
  background:rgba(200,255,61,.08);
  border:1px solid rgba(200,255,61,.45);
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
}
.tag--orange{color:var(--orange);background:rgba(255,106,43,.1);border-color:rgba(255,106,43,.5)}
.tag--signal{color:var(--signal);background:rgba(43,217,192,.1);border-color:rgba(43,217,192,.5)}

/* 5. 布局容器 -------------------------------------------------------------- */
.wrap{
  width:min(100% - 2 * var(--gutter),var(--maxw));
  margin-inline:auto;
}
.section{padding-block:clamp(48px,7vw,96px)}
.section--tight{padding-block:clamp(28px,4vw,48px)}
.section--alt{background:var(--ink-2)}
.section--light{background:var(--white);color:var(--char)}
.section--light .label{color:var(--lime-deep)}
.section--light .prose{color:#2C3A32}

.grid{display:grid;gap:clamp(14px,2vw,24px)}
.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))}

.ticks{
  position:relative;
  padding-left:20px;
}
.ticks::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;width:6px;
  background:repeating-linear-gradient(180deg,var(--line) 0 1px,transparent 1px 12px);
}

/* 6. 按钮 ------------------------------------------------------------------ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 20px;
  font-size:13px;
  font-weight:800;
  letter-spacing:.1em;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  text-align:center;
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn--sm{padding:9px 15px;font-size:12px;--cut:10px}
.btn--lime{background:var(--lime);color:var(--char)}
.btn--lime:hover{background:var(--white)}
.btn--orange{background:var(--orange);color:#1A0A02}
.btn--orange:hover{background:var(--lime);color:var(--char)}
.btn--ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime)}

/* 7. 面板 / 面包屑 / 图片容器 ------------------------------------------------ */
.panel{
  position:relative;
  background:var(--ink-2);
  border:1px solid var(--line);
  padding:clamp(18px,2.4vw,28px);
}
.panel--cut{clip-path:polygon(0 0,100% 0,100% calc(100% - 22px),calc(100% - 22px) 100%,0 100%)}
.panel--lime{border-color:rgba(200,255,61,.45)}
.panel--light{background:var(--white);color:var(--char);border-color:rgba(16,20,15,.14)}
.panel--light .label{color:var(--lime-deep)}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.04em;
  color:var(--text-mute);
}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li + li::before{
  content:"/";
  color:var(--line);
  font-family:var(--font-num);
}
.breadcrumb a{color:var(--text-mute);transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb [aria-current="page"]{color:var(--text)}

.img-frame{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16 / 9;
  border:1px solid var(--line);
  background:
    linear-gradient(135deg,rgba(200,255,61,.07),transparent 62%),
    var(--ink-2);
}
.img-frame > img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(1.05) contrast(1.04);
}
.img-frame::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(200,255,61,.08) 1px,transparent 1px),
    linear-gradient(90deg,rgba(200,255,61,.08) 1px,transparent 1px);
  background-size:48px 48px;
  mix-blend-mode:screen;
}
.img-frame::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:46%;
  pointer-events:none;
  background:linear-gradient(180deg,transparent,rgba(11,31,26,.86));
}
.img-frame--4x3{aspect-ratio:4 / 3}
.img-frame--1x1{aspect-ratio:1 / 1}
.img-frame--3x4{aspect-ratio:3 / 4}
.img-frame--cut{clip-path:polygon(0 0,100% 0,100% calc(100% - 26px),calc(100% - 26px) 100%,0 100%)}
.img-frame__label{
  position:absolute;
  left:12px;bottom:12px;
  z-index:2;
  padding:4px 9px;
  font-size:10px;
  font-weight:800;
  letter-spacing:.16em;
  color:var(--lime);
  background:rgba(11,31,26,.74);
  border:1px solid rgba(200,255,61,.45);
}

/* 8. 头部 ------------------------------------------------------------------ */
.skip-link{
  position:fixed;
  top:10px;left:12px;
  z-index:999;
  padding:10px 16px;
  font-size:13px;
  font-weight:800;
  letter-spacing:.08em;
  color:var(--char);
  background:var(--lime);
  transform:translateY(-180%);
  transition:transform .2s var(--ease);
  clip-path:polygon(10px 0,100% 0,100% 100%,0 100%);
}
.skip-link:focus{transform:translateY(0)}

.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:transparent;
  border-bottom:1px solid transparent;
  isolation:isolate;
  transition:background-color .22s var(--ease),border-color .22s var(--ease);
}
.site-header.is-stuck{
  background:var(--line);
  border-bottom-color:rgba(200,255,61,.22);
}
.site-header::before{
  content:"";
  position:absolute;
  top:0;left:0;
  width:100%;
  height:2px;
  pointer-events:none;
  background:linear-gradient(90deg,var(--lime) 0 14%,rgba(200,255,61,.14) 14% 100%);
  opacity:.85;
}

.site-header__inner{
  position:relative;
  width:min(100% - 2 * var(--gutter),var(--maxw));
  margin-inline:auto;
  display:flex;
  align-items:center;
  gap:clamp(10px,1.6vw,24px);
  min-height:var(--header-h);
  transition:min-height .22s var(--ease);
}
.site-header.is-stuck .site-header__inner{min-height:var(--header-h-stuck)}

/* 品牌锁定 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  padding:4px 0;
  color:var(--text);
}
.brand__name{
  font-size:clamp(18px,1.55vw,21px);
  font-weight:800;
  letter-spacing:.1em;
  font-stretch:88%;
  line-height:1;
  white-space:nowrap;
}
.brand__tag{
  font-size:10px;
  font-weight:800;
  letter-spacing:.2em;
  line-height:1;
  padding:5px 10px 5px 13px;
  color:var(--char);
  background:var(--lime);
  white-space:nowrap;
  clip-path:polygon(9px 0,100% 0,100% 100%,0 100%);
}
.brand__status{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding-left:12px;
  font-size:10px;
  letter-spacing:.14em;
  color:var(--muted);
  border-left:1px solid var(--line);
  white-space:nowrap;
}
.brand__pulse{
  flex:0 0 auto;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 0 0 rgba(200,255,61,.55);
  animation:arena-pulse 2.4s ease-out infinite;
}
@keyframes arena-pulse{
  0%{box-shadow:0 0 0 0 rgba(200,255,61,.55)}
  70%{box-shadow:0 0 0 7px rgba(200,255,61,0)}
  100%{box-shadow:0 0 0 0 rgba(200,255,61,0)}
}

/* 主导航（桌面） */
.site-nav{
  display:flex;
  align-items:center;
  gap:clamp(10px,1.6vw,26px);
  margin-left:auto;
}
.site-nav__list{
  display:flex;
  align-items:center;
  gap:2px;
}
.site-nav__list a{
  position:relative;
  display:inline-block;
  padding:10px 11px;
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  white-space:nowrap;
  color:rgba(242,247,243,.86);
  transition:color .18s var(--ease);
}
.site-nav__list a::after{
  content:"";
  position:absolute;
  left:11px;right:11px;bottom:4px;
  height:2px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .18s var(--ease);
}
.site-nav__list a:hover{color:var(--text)}
.site-nav__list a:hover::after{transform:scaleX(1)}
.site-nav__list a[aria-current="page"]{color:var(--lime)}
.site-nav__list a[aria-current="page"]::after{transform:scaleX(1)}

.site-nav__utility{
  display:flex;
  align-items:center;
  gap:12px;
}

/* 赛季胶囊 */
.season-switch{
  display:flex;
  align-items:center;
  gap:6px;
  max-width:250px;
  padding:2px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.season-switch::-webkit-scrollbar{display:none}
.season-switch__label{
  font-size:10px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--muted);
  white-space:nowrap;
}
.season-switch__pill{
  flex:0 0 auto;
  padding:4px 9px;
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:11px;
  letter-spacing:.06em;
  color:var(--text);
  background:transparent;
  border:1px solid var(--line);
  border-radius:999px;
  cursor:pointer;
  white-space:nowrap;
  transition:background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.season-switch__pill:hover{border-color:var(--lime);color:var(--lime)}
.season-switch__pill.is-active,
.season-switch__pill[aria-pressed="true"]{
  color:var(--char);
  background:var(--lime);
  border-color:var(--lime);
  font-weight:700;
}

/* 移动菜单按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  margin-left:auto;
  padding:9px 13px;
  font-size:11px;
  font-weight:800;
  letter-spacing:.16em;
  color:var(--text);
  background:transparent;
  border:1px solid var(--line);
  cursor:pointer;
}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:16px;height:2px;
  background:currentColor;
  transition:background-color .18s var(--ease);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;height:2px;
  background:currentColor;
  transition:transform .22s var(--ease);
}
.nav-toggle__bars::before{top:-5px}
.nav-toggle__bars::after{top:5px}
.site-header[data-open="true"] .nav-toggle__bars{background:transparent}
.site-header[data-open="true"] .nav-toggle__bars::before{transform:translateY(5px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle__bars::after{transform:translateY(-5px) rotate(-45deg)}

/* 阅读进度轨迹 */
.scroll-track{
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  overflow:hidden;
  pointer-events:none;
  background:rgba(30,74,62,.55);
}
.scroll-track__bar{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--lime),var(--signal));
}

/* 9. 页脚 ------------------------------------------------------------------ */
.site-footer{
  position:relative;
  padding:clamp(40px,6vw,72px) 0 clamp(18px,2vw,28px);
  background:var(--ink);
  border-top:1px solid var(--line);
  color:var(--text);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;
  width:100%;height:6px;
  pointer-events:none;
  background:repeating-linear-gradient(90deg,rgba(200,255,61,.28) 0 1px,transparent 1px 26px);
}
.footer-inner{
  width:min(100% - 2 * var(--gutter),var(--maxw));
  margin-inline:auto;
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(230px,1fr) 2.2fr;
  gap:clamp(28px,4vw,64px);
  padding-bottom:clamp(28px,4vw,48px);
  border-bottom:1px solid var(--line);
}
.footer-brand{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:14px;
}
.brand--footer{gap:8px;padding:0}
.brand--footer .brand__name{font-size:24px;letter-spacing:.12em}
.footer-brand__note{
  max-width:32ch;
  font-size:13px;
  line-height:1.72;
  color:var(--muted);
}
.footer-brand__badge{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:6px 13px;
  font-size:10px;
  font-weight:800;
  letter-spacing:.16em;
  color:var(--lime);
  background:rgba(200,255,61,.1);
  border:1px solid rgba(200,255,61,.35);
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
}

.footer-nav{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(20px,3vw,40px);
}
.footer-col__title{
  margin-bottom:12px;
  padding-bottom:10px;
  font-size:11px;
  font-weight:800;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--lime);
  border-bottom:1px solid var(--line);
}
.footer-col ul{display:grid;gap:9px}
.footer-col a{
  position:relative;
  display:inline-block;
  font-size:14px;
  color:rgba(242,247,243,.78);
  transition:color .18s var(--ease);
}
.footer-col a::before{
  content:"";
  position:absolute;
  left:-10px;top:50%;
  width:0;height:1px;
  background:var(--lime);
  transition:width .18s var(--ease);
}
.footer-col a:hover{color:var(--lime)}
.footer-col a:hover::before{width:6px}

.footer-contact{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:16px 32px;
  padding:clamp(22px,3vw,34px) 0;
  border-bottom:1px solid var(--line);
}
.footer-contact__row{display:flex;flex-direction:column;gap:3px}
.footer-contact__key{
  font-size:10px;
  font-weight:700;
  letter-spacing:.18em;
  color:var(--muted);
}
.footer-contact__val{
  font-size:14px;
  line-height:1.6;
  color:var(--text);
}
.footer-contact__row:first-child .footer-contact__val{
  font-family:var(--font-num);
  letter-spacing:.01em;
}
.footer-contact__note{
  grid-column:1 / -1;
  font-size:12px;
  line-height:1.7;
  color:var(--muted);
}

.footer-score{
  display:flex;
  flex-wrap:wrap;
  align-items:stretch;
  margin:clamp(20px,3vw,32px) 0;
  background:var(--ink-2);
  border:1px solid var(--line);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%);
}
.footer-score__cell{
  display:flex;
  flex-direction:column;
  gap:2px;
  min-width:150px;
  padding:14px 22px;
  border-right:1px solid var(--line);
}
.footer-score__key{
  font-size:10px;
  font-weight:700;
  letter-spacing:.18em;
  color:var(--muted);
}
.footer-score__val{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:18px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--text);
}
.footer-score__cell--lime .footer-score__val{color:var(--lime)}
.footer-score__cta{
  display:flex;
  align-items:center;
  justify-content:center;
  margin-left:auto;
  padding:14px 26px;
  font-size:12px;
  font-weight:800;
  letter-spacing:.12em;
  color:var(--char);
  background:var(--lime);
  transition:background-color .18s var(--ease);
}
.footer-score__cta:hover{background:var(--white)}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 24px;
  padding-top:18px;
  font-size:12px;
  color:var(--muted);
}
.footer-legal__links{display:flex;flex-wrap:wrap;gap:8px 18px}
.footer-legal__links a{
  font-size:12px;
  color:rgba(242,247,243,.72);
  transition:color .18s var(--ease);
}
.footer-legal__links a:hover{color:var(--lime)}
.footer-legal__icp{
  margin-left:auto;
  font-family:var(--font-num);
  letter-spacing:.04em;
}

/* 10. 返回顶部 ------------------------------------------------------------- */
.to-top{
  position:fixed;
  right:clamp(14px,3vw,32px);
  bottom:clamp(14px,3vw,32px);
  z-index:80;
  display:flex;
  align-items:center;
  gap:8px;
  padding:11px 16px;
  font-size:11px;
  font-weight:800;
  letter-spacing:.16em;
  color:var(--char);
  background:var(--lime);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(14px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility 0s linear .2s;
  clip-path:polygon(12px 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
}
.to-top.is-visible{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility 0s linear 0s;
}
.to-top:hover{background:var(--white)}
.to-top__arrow{font-family:var(--font-num);font-size:14px;line-height:1}

/* 11. 焦点可见性 ----------------------------------------------------------- */
:focus-visible{
  outline:2px solid var(--signal);
  outline-offset:3px;
}
.btn:focus-visible,
.season-switch__pill:focus-visible,
.nav-toggle:focus-visible,
.skip-link:focus-visible,
.to-top:focus-visible,
.footer-score__cta:focus-visible{
  outline:none;
  box-shadow:inset 0 0 0 2px var(--signal);
}

/* 12. 响应式 -------------------------------------------------------------- */
@media (max-width:1200px){
  .brand__status{display:none}
}

@media (max-width:1099px){
  .nav-toggle{display:inline-flex}

  .site-nav{
    position:fixed;
    inset:auto 0 0 0;
    z-index:95;
    flex-direction:column;
    align-items:stretch;
    gap:16px;
    margin:0;
    padding:22px var(--gutter) calc(22px + env(safe-area-inset-bottom,0px));
    max-height:85vh;
    overflow-y:auto;
    background:var(--ink-2);
    border-top:2px solid var(--lime);
    transform:translateY(112%);
    visibility:hidden;
    transition:transform .28s var(--ease),visibility 0s linear .28s;
  }
  .site-header[data-open="true"] .site-nav{
    transform:translateY(0);
    visibility:visible;
    transition:transform .28s var(--ease),visibility 0s linear 0s;
  }

  .site-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    width:100%;
  }
  .site-nav__list a{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:15px 10px;
    font-size:16px;
    font-weight:700;
    border-bottom:1px solid rgba(30,74,62,.9);
  }
  .site-nav__list a::after{display:none}
  .site-nav__list a[aria-current="page"]{
    background:linear-gradient(90deg,rgba(200,255,61,.14),transparent 72%);
  }

  .site-nav__utility{
    flex-direction:column;
    align-items:stretch;
    gap:14px;
  }
  .season-switch{
    max-width:none;
    width:100%;
    padding:2px 0 6px;
  }
  .season-switch__pill{padding:7px 14px;font-size:12px}
  .site-nav__utility .btn{width:100%;padding:15px;--cut:12px}
}

@media (max-width:900px){
  .footer-top{grid-template-columns:1fr}
  .footer-legal__icp{margin-left:0}
}

@media (max-width:620px){
  :root{--header-h:66px;--header-h-stuck:56px}
  .brand__tag{display:none}
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
  .footer-nav{grid-template-columns:1fr 1fr;gap:22px 18px}
  .footer-score__cell{flex:1 1 50%;min-width:0;border-bottom:1px solid var(--line)}
  .footer-score__cta{width:100%;margin-left:0;padding:15px}
  .to-top{padding:10px 13px}
  .to-top__text{display:none}
}

@media (max-width:420px){
  .brand__name{letter-spacing:.06em}
}

/* 13. 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;
    scroll-behavior:auto !important;
  }
}