/* ==========================================================================
   风速体育 /assets/site.css
   疾速数据赛道：横向刻度 · 斜向分割 · 等宽数字
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  --color-void:#0B0F14;
  --color-panel:#121A22;
  --color-line:#22303C;
  --color-velocity:#00E676;
  --color-data:#2979FF;
  --color-alert:#FF6D00;
  --color-text:#F2F5F3;
  --color-muted:#9FB0B6;
  --color-velocity-deep:#06351F;
  --color-data-deep:#0B2143;
  --color-pitch:#0F2A1C;

  --font-heading:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"JetBrains Mono","Roboto Mono","SFMono-Regular",ui-monospace,monospace;

  --s1:8px; --s2:12px; --s3:16px; --s4:24px; --s5:32px; --s6:40px; --s7:56px; --s8:76px;
  --gutter:64px;
  --shell-max:1280px;
  --scorebar-h:48px;
  --shadow-hard:6px 6px 0 var(--color-line);
  --shadow-hard-sm:4px 4px 0 var(--color-line);
  --ease-velocity:cubic-bezier(0.22,1,0.36,1);
}

/* ---------- 2. 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,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{max-width:100%;display:block}
a{color:var(--color-data);text-decoration:none}
a:hover{color:var(--color-velocity)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
[hidden]{display:none!important}

/* ---------- 3. 基础排版 ---------- */
body{
  background:var(--color-void);
  color:var(--color-text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  padding-bottom:calc(var(--scorebar-h) + 12px);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5{font-family:var(--font-heading);font-weight:800;line-height:1.15;letter-spacing:-0.01em}
h1{font-size:clamp(32px,5vw,64px)}
h2{font-size:clamp(26px,3.4vw,40px)}
h3{font-size:clamp(20px,2.2vw,26px)}
h4{font-size:18px;font-weight:700}
strong{font-weight:700;color:var(--color-text)}
.prose{max-width:68ch}
.prose p{margin-bottom:1.2em}
.prose h2{margin:2.2em 0 .7em}
.prose h3{margin:1.8em 0 .6em}
.prose ul{margin:0 0 1.2em;padding-left:1.2em;list-style:disc}
.prose li{margin-bottom:.5em}

.num,.mono{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.num{letter-spacing:-0.02em}
.muted{color:var(--color-muted)}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

:focus-visible{outline:3px solid var(--color-velocity);outline-offset:3px;border-radius:6px}

/* ---------- 4. 布局容器 ---------- */
.wrap{width:100%;max-width:var(--shell-max);margin:0 auto;padding:0 var(--gutter)}
.section{padding:var(--s8) 0}
.section + .section{padding-top:0}
.grid{display:grid;gap:var(--s4)}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.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}

/* ---------- 5. 跳转链接 ---------- */
.skip-link{
  position:absolute;left:var(--s3);top:var(--s1);z-index:200;
  display:inline-block;padding:10px 18px;border-radius:999px;
  background:var(--color-velocity);color:var(--color-velocity-deep);
  font-weight:800;font-size:14px;text-decoration:none;
  transform:translateY(-220%);
  transition:transform .2s var(--ease-velocity);
}
.skip-link:focus{transform:translateY(0);color:var(--color-velocity-deep)}

/* ---------- 6. 头部：比分滚动条 ---------- */
.site-header{position:relative;z-index:60}

.score-ticker{
  position:relative;
  background:var(--color-panel);
  border-bottom:1px solid var(--color-line);
  overflow:hidden;
}
.score-ticker__viewport{display:flex;width:max-content;animation:ticker-scroll 60s linear infinite}
.score-ticker__viewport:hover,.score-ticker__viewport:focus-within{animation-play-state:paused}
@keyframes ticker-scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}

.score-ticker__track{display:flex;align-items:center;gap:var(--s5);padding:9px var(--s3)}
.score-ticker__item{display:inline-flex;align-items:center;gap:10px;white-space:nowrap}
.score-ticker__league{
  font-size:11px;font-weight:700;letter-spacing:.14em;color:var(--color-void);
  background:var(--color-muted);border-radius:999px;padding:1px 9px;
}
.score-ticker__teams{font-size:13px;color:var(--color-muted)}
.score-ticker__score{font-size:15px;font-weight:700;color:var(--color-velocity);padding:0 2px}
.score-ticker__state{font-family:var(--font-num);font-size:11px;letter-spacing:.06em}
.score-ticker__state--live{color:var(--color-alert)}
.score-ticker__state--done{color:var(--color-velocity)}

/* ---------- 7. 头部：悬浮胶囊导航 ---------- */
.nav-shell{
  position:sticky;top:0;z-index:60;
  background:rgba(11,15,20,.9);
  border-bottom:1px solid var(--color-line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .nav-shell{background:#0B0F14}
}
.nav-shell__grid{
  position:relative;
  display:flex;align-items:center;gap:var(--s2);
  max-width:var(--shell-max);margin:0 auto;
  padding:11px var(--gutter);
  transition:padding .25s var(--ease-velocity);
}

.brand-capsule{
  display:inline-flex;align-items:center;gap:10px;
  padding:6px 18px 6px 8px;
  border:2px solid var(--color-line);border-radius:999px;
  background:var(--color-panel);color:var(--color-text);
  box-shadow:var(--shadow-hard-sm);flex:none;
  transition:transform .18s var(--ease-velocity),box-shadow .18s var(--ease-velocity);
}
.brand-capsule:hover{color:var(--color-text);transform:translate(-2px,-2px);box-shadow:var(--shadow-hard)}
.brand-capsule__mark{
  width:30px;height:30px;flex:none;border-radius:8px;
  background-color:var(--color-velocity);
  background-image:repeating-linear-gradient(115deg,#0B0F14 0 3px,transparent 3px 8px);
  transform:skewX(-10deg);
}
.brand-capsule__text{display:flex;flex-direction:column;line-height:1.1}
.brand-capsule__name{font-size:17px;font-weight:800;letter-spacing:.02em}
.brand-capsule__tagline{font-family:var(--font-num);font-size:10px;letter-spacing:.12em;color:var(--color-muted)}

.nav-capsule{
  margin:0 auto;
  border:2px solid var(--color-line);border-radius:999px;
  background:rgba(18,26,34,.94);
  padding:5px;
}
.nav-capsule__list{display:flex;flex-wrap:wrap;align-items:center;gap:2px}
.nav-link{
  display:block;padding:7px 14px;border-radius:999px;
  font-size:14px;font-weight:500;color:var(--color-muted);white-space:nowrap;
  transition:background .18s ease,color .18s ease;
}
.nav-link:hover{color:var(--color-text);background:rgba(0,230,118,.1)}
.nav-link[aria-current="page"]{background:var(--color-velocity);color:var(--color-velocity-deep);font-weight:800}

.nav-side{display:flex;align-items:center;gap:10px;flex:none}
.round-capsule{
  display:inline-flex;align-items:baseline;gap:4px;
  padding:6px 14px;border:2px solid var(--color-line);border-radius:999px;
  background:var(--color-panel);color:var(--color-text);
}
.round-capsule:hover{color:var(--color-text);border-color:var(--color-velocity)}
.round-capsule__label{font-size:10px;letter-spacing:.16em;color:var(--color-muted)}
.round-capsule__value{font-family:var(--font-num);font-size:18px;font-weight:700;color:var(--color-velocity)}
.round-capsule__total{font-family:var(--font-num);font-size:12px;color:var(--color-muted)}
.nav-cta{
  display:inline-flex;align-items:center;
  padding:9px 18px;border-radius:999px;
  background:var(--color-velocity);color:var(--color-velocity-deep);
  border:2px solid var(--color-velocity-deep);
  font-size:14px;font-weight:800;white-space:nowrap;
  box-shadow:4px 4px 0 rgba(0,230,118,.22);
  transition:transform .18s var(--ease-velocity),box-shadow .18s var(--ease-velocity);
}
.nav-cta:hover{color:var(--color-velocity-deep);transform:translate(-2px,-2px);box-shadow:6px 6px 0 rgba(0,230,118,.3)}

.nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:9px 16px;border:2px solid var(--color-line);border-radius:999px;
  background:var(--color-panel);font-size:14px;font-weight:700;flex:none;
}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:18px}
.nav-toggle__bars span{display:block;height:2px;background:var(--color-velocity);transition:opacity .18s ease}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"]{border-color:var(--color-velocity)}

.nav-progress{height:3px;background:var(--color-line);overflow:hidden}
.nav-progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--color-data),var(--color-velocity));
  transition:width .12s linear;
}

/* 收拢形态 */
.site-header.is-compact .nav-shell__grid{padding-top:6px;padding-bottom:6px}
.site-header.is-compact .brand-capsule__tagline{display:none}
.site-header.is-compact .brand-capsule__mark{width:24px;height:24px}

/* ---------- 8. 页脚 ---------- */
.site-footer{
  position:relative;margin-top:var(--s8);
  background:var(--color-panel);
  border-top:3px solid var(--color-line);
}
.footer-rule{
  height:10px;
  background-image:repeating-linear-gradient(90deg,var(--color-line) 0 2px,transparent 2px 24px);
  border-bottom:1px solid var(--color-line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr .9fr .9fr .9fr 1.3fr;
  gap:var(--s5);
  padding-top:var(--s7);
  padding-bottom:var(--s6);
}
.footer-brand__name{font-size:20px;font-weight:800;letter-spacing:.02em}
.footer-brand__tagline{font-family:var(--font-num);font-size:11px;letter-spacing:.14em;color:var(--color-velocity);margin-top:4px}
.footer-brand__note{margin-top:var(--s2);max-width:34ch;font-size:13px;line-height:1.7;color:var(--color-muted)}

.footer-col,.footer-contact{border-left:1px solid var(--color-line);padding-left:var(--s4)}
.footer-col__title{
  font-size:12px;font-weight:700;letter-spacing:.18em;color:var(--color-muted);
  display:flex;align-items:center;gap:8px;margin-bottom:var(--s2);
}
.footer-col__title::before{content:"";width:12px;height:2px;background:var(--color-velocity);flex:none}
.footer-links a{
  display:inline-block;padding:4px 0;font-size:14px;
  color:var(--color-muted);
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.footer-links a:hover{color:var(--color-velocity);border-bottom-color:var(--color-velocity)}

.footer-contact__list{display:flex;flex-direction:column;gap:10px}
.footer-contact__row{display:flex;flex-direction:column;gap:2px}
.footer-contact__key{font-size:11px;letter-spacing:.14em;color:var(--color-line);filter:brightness(1.9)}
.footer-contact__value{font-size:13px;color:var(--color-text);word-break:break-all;line-height:1.6}

.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px var(--s4);
  border-top:1px solid var(--color-line);
  padding-top:var(--s3);padding-bottom:var(--s5);
  font-size:12px;color:var(--color-muted);
}
.footer-legal__copy{font-family:var(--font-num);letter-spacing:.02em}
.footer-legal__icp{font-family:var(--font-num);color:var(--color-muted)}
.footer-legal__links{display:flex;flex-wrap:wrap;gap:var(--s3);margin-left:auto}
.footer-legal__links a{color:var(--color-muted);font-size:12px}
.footer-legal__links a:hover{color:var(--color-velocity)}

/* ---------- 9. 返回顶部 ---------- */
.back-to-top{
  position:fixed;right:var(--s4);bottom:calc(var(--scorebar-h) + 20px);z-index:75;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border:2px solid var(--color-line);border-radius:999px;
  background:var(--color-panel);color:var(--color-text);
  font-size:13px;font-weight:700;
  box-shadow:var(--shadow-hard-sm);
  transition:transform .18s var(--ease-velocity),box-shadow .18s var(--ease-velocity);
}
.back-to-top::before{content:"";width:0;height:0;border-left:5px solid transparent;border-right:5px solid transparent;border-bottom:7px solid var(--color-velocity)}
.back-to-top:hover{transform:translate(-2px,-2px);box-shadow:var(--shadow-hard)}

/* ---------- 10. 底部比分条 ---------- */
.scorebar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(12,17,23,.97);
  border-top:2px solid var(--color-line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.scorebar__strip{
  display:flex;align-items:center;gap:var(--s3);
  max-width:var(--shell-max);margin:0 auto;
  height:var(--scorebar-h);padding:0 var(--gutter);
}
.scorebar__label{
  flex:none;font-family:var(--font-num);font-size:11px;letter-spacing:.16em;
  color:var(--color-velocity);
  border-right:1px solid var(--color-line);padding-right:var(--s3);
}
.scorebar__list{display:flex;align-items:center;gap:var(--s4);flex:1 1 auto;overflow-x:auto;scrollbar-width:none}
.scorebar__list::-webkit-scrollbar{display:none}
.scorebar__item{display:inline-flex;align-items:center;gap:8px;white-space:nowrap}
.scorebar__pair{font-size:13px;color:var(--color-muted)}
.scorebar__pair .num{font-size:15px;font-weight:700;color:var(--color-text)}
.scorebar__toggle{
  flex:none;padding:6px 14px;border:2px solid var(--color-line);border-radius:999px;
  background:var(--color-void);font-size:12px;font-weight:700;color:var(--color-text);
}
.scorebar__toggle:hover{border-color:var(--color-velocity);color:var(--color-velocity)}
.scorebar__panel{border-top:1px solid var(--color-line);max-height:50vh;overflow-y:auto}
.scorebar__panel-inner{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--s5);
  max-width:var(--shell-max);margin:0 auto;padding:var(--s4) var(--gutter) var(--s5);
}
.scorebar__group-title{font-family:var(--font-num);font-size:11px;letter-spacing:.16em;color:var(--color-muted);margin-bottom:var(--s2)}
.scorebar__group .scorebar__list{flex-wrap:wrap;overflow:visible}

/* ---------- 11. 通用组件 ---------- */
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-num);font-size:12px;color:var(--color-muted);
  padding-top:var(--s4);
}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumbs__item::after{content:"/";color:var(--color-line)}
.breadcrumbs__item:last-child::after{display:none}
.breadcrumbs a{color:var(--color-muted)}
.breadcrumbs a:hover{color:var(--color-velocity)}

.section-head{
  display:flex;align-items:flex-end;gap:var(--s3);flex-wrap:wrap;
  padding-bottom:var(--s3);border-bottom:2px solid var(--color-line);
  margin-bottom:var(--s5);
}
.section-head__index{font-family:var(--font-num);font-size:13px;letter-spacing:.1em;color:var(--color-velocity)}
.section-head__title{font-size:clamp(24px,3vw,40px);font-weight:800;transform:skewX(-6deg)}
.eyebrow{font-family:var(--font-num);font-size:12px;letter-spacing:.22em;color:var(--color-muted)}

.panel{
  position:relative;
  background:var(--color-panel);
  border:2px solid var(--color-line);
  box-shadow:var(--shadow-hard);
  padding:var(--s4);
}
.panel--offset{margin-top:-8px}
.panel__head{display:flex;align-items:baseline;justify-content:space-between;gap:var(--s2);flex-wrap:wrap;padding-bottom:var(--s2);border-bottom:1px solid var(--color-line);margin-bottom:var(--s3)}
.panel__title{font-size:18px;font-weight:700}
.panel__meta{font-family:var(--font-num);font-size:12px;color:var(--color-muted)}
.panel__body{font-size:15px;color:var(--color-muted)}

.stat{display:flex;flex-direction:column;gap:2px}
.stat__value{font-family:var(--font-num);font-size:clamp(28px,4vw,38px);font-weight:700;letter-spacing:-.02em;color:var(--color-velocity);line-height:1.1}
.stat__label{font-size:13px;color:var(--color-muted)}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:1px 10px;border:1px solid currentColor;border-radius:999px;
  font-family:var(--font-num);font-size:11px;font-weight:700;line-height:1.7;white-space:nowrap;
}
.badge--live{color:var(--color-alert)}
.badge--done{color:var(--color-velocity)}
.badge--todo{color:var(--color-data)}

.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;border:2px solid var(--color-line);border-radius:999px;
  background:var(--color-panel);color:var(--color-text);
  font-size:15px;font-weight:700;
  transition:transform .18s var(--ease-velocity),box-shadow .18s var(--ease-velocity);
}
.btn:hover{color:var(--color-text);transform:translate(-2px,-2px);box-shadow:var(--shadow-hard-sm)}
.btn--velocity{background:var(--color-velocity);color:var(--color-velocity-deep);border-color:var(--color-velocity)}
.btn--velocity:hover{color:var(--color-velocity-deep)}
.btn--data{background:var(--color-data);color:#fff;border-color:var(--color-data)}
.btn--data:hover{color:#fff}
.btn--ghost{background:transparent}

.media-frame{
  position:relative;overflow:hidden;
  border:2px solid var(--color-line);
  background:linear-gradient(135deg,var(--color-data-deep),var(--color-pitch));
  box-shadow:var(--shadow-hard);
  aspect-ratio:16/9;
}
.media-frame__img{width:100%;height:100%;object-fit:cover;display:block}
.media-frame::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;
  background-image:repeating-linear-gradient(90deg,var(--color-velocity) 0 8px,transparent 8px 16px);
  opacity:.85;
}
.media-frame__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:8px 12px;border-top:1px solid var(--color-line);
  background:rgba(11,15,20,.78);
  font-family:var(--font-num);font-size:12px;color:var(--color-muted);
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}

.chapter-tracker{
  position:sticky;top:112px;
  display:flex;flex-direction:column;
  border-left:2px solid var(--color-line);
  padding-left:var(--s2);
}
.chapter-tracker__title{font-family:var(--font-num);font-size:11px;letter-spacing:.18em;color:var(--color-muted);margin-bottom:var(--s1)}
.chapter-tracker__link{
  display:block;padding:6px 0 6px 12px;margin-left:calc(-1 * (var(--s2) + 2px));
  border-left:2px solid transparent;
  font-size:14px;color:var(--color-muted);
  transition:color .18s ease,border-color .18s ease;
}
.chapter-tracker__link:hover{color:var(--color-text)}
.chapter-tracker__link.is-active{color:var(--color-velocity);border-left-color:var(--color-velocity);font-weight:700}

.density-toggle{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border:2px solid var(--color-line);border-radius:999px;
  background:var(--color-panel);font-size:13px;font-weight:700;
}
.density-toggle:hover{border-color:var(--color-velocity);color:var(--color-velocity)}
.density-list{display:flex;flex-direction:column;gap:var(--s3)}
.density-card{
  border:2px solid var(--color-line);background:var(--color-panel);
  padding:var(--s4);
  transition:padding .25s var(--ease-velocity),background .25s ease;
}
.density-card__title{font-size:17px;font-weight:700;margin-bottom:6px}
.density-card__meta{font-family:var(--font-num);font-size:12px;color:var(--color-muted)}
.density-card__excerpt{margin-top:10px;font-size:14px;color:var(--color-muted)}
.density-list[data-density="compact"] .density-card{padding:var(--s2) var(--s3);background:var(--color-void)}
.density-list[data-density="compact"] .density-card__excerpt{display:none}
.density-list[data-density="compact"]{gap:6px}

.divider-diagonal{
  display:flex;align-items:center;
  height:var(--s7);padding:0 var(--gutter);
  background:var(--color-panel);
  border-top:1px solid var(--color-line);
  border-bottom:1px solid var(--color-line);
  clip-path:polygon(0 24%,100% 0,100% 76%,0 100%);
  font-family:var(--font-num);font-size:12px;letter-spacing:.2em;color:var(--color-muted);
}
.tick-rule{height:8px;background-image:repeating-linear-gradient(90deg,var(--color-line) 0 1px,transparent 1px 12px)}

[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease-velocity),transform .5s var(--ease-velocity)}
[data-reveal].is-revealed{opacity:1;transform:none}

/* ---------- 12. 响应式 ---------- */
@media (max-width:1080px){
  :root{--gutter:40px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--s4)}
  .footer-brand{grid-column:1/-1;border-bottom:1px solid var(--color-line);padding-bottom:var(--s3)}
  .footer-brand__note{max-width:56ch}
  .nav-cta{display:none}
}

@media (max-width:900px){
  .nav-shell__grid{padding-top:9px;padding-bottom:9px;flex-wrap:nowrap}
  .nav-toggle{display:inline-flex}
  .nav-capsule{
    position:absolute;left:var(--gutter);right:var(--gutter);top:calc(100% + 10px);
    margin:0;border-radius:20px;
    box-shadow:6px 6px 0 rgba(0,0,0,.55);
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .22s var(--ease-velocity),transform .22s var(--ease-velocity),visibility .22s;
    max-height:60vh;overflow-y:auto;
  }
  .nav-capsule[data-open="true"]{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-capsule__list{flex-direction:row;flex-wrap:wrap;gap:6px}
  .nav-link{padding:9px 15px;font-size:14px;border:1px solid var(--color-line)}
  .nav-link[aria-current="page"]{border-color:var(--color-velocity)}
  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .span-7,.span-8{grid-column:span 6}
  .span-5,.span-4{grid-column:span 3}
  .chapter-tracker{position:static;border-left:0;padding-left:0;margin-bottom:var(--s4)}
  .chapter-tracker__link{margin-left:0;padding-left:0}
  .scorebar__panel-inner{grid-template-columns:1fr}
}

@media (max-width:720px){
  :root{--gutter:20px;--scorebar-h:46px}
  body{font-size:15.5px;padding-bottom:calc(var(--scorebar-h) + 8px)}
  .section{padding:var(--s7) 0}
  .round-capsule{display:none}
  .brand-capsule{padding:5px 14px 5px 6px}
  .brand-capsule__tagline{display:none}
  .score-ticker__track{gap:var(--s4);padding:8px var(--s2)}
  .footer-grid{grid-template-columns:1fr;gap:0;padding-top:var(--s6)}
  .footer-col,.footer-contact{border-left:0;padding-left:0;border-top:1px solid var(--color-line);padding-top:var(--s3);margin-top:var(--s3)}
  .footer-legal__links{margin-left:0;width:100%}
  .grid--12{grid-template-columns:1fr}
  .span-4,.span-5,.span-6,.span-7,.span-8,.span-12{grid-column:1/-1}
  .back-to-top{right:var(--s3);bottom:calc(var(--scorebar-h) + 14px);padding:8px 14px}
  .scorebar__label{display:none}
  .scorebar__strip{gap:var(--s2)}
}

/* ---------- 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;
  }
  .score-ticker{overflow-x:auto}
  .score-ticker__viewport{animation:none}
  .score-ticker__track[aria-hidden="true"]{display:none}
  .nav-progress__bar{transition:none}
  [data-reveal]{opacity:1;transform:none}
}