/* ============================================================
   猫头鹰体育 OWL —— /assets/site.css
   夜巡墨蓝 / 岩层灰 / 月白米 / 苔原绿 / 荧光青 / 琥珀金 / 陶土橙
   ============================================================ */

/* 1. reset ------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,blockquote,dl,dt,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
[hidden]{display:none !important}

/* 2. tokens ------------------------------------------------ */
:root{
  --ink:#0A1220;
  --rock:#1E2624;
  --rock-mid:#3C4744;
  --stone:#7E8883;
  --moon:#F3EEE4;
  --paper:#FCFAF5;
  --moss:#4C6B57;
  --cyan:#7FE3C6;
  --amber:#D8A24C;
  --clay:#B85C33;

  --rail:88px;
  --shell:1200px;
  --hair:rgba(60,71,68,.42);
  --shadow-hard:8px 8px 0 rgba(10,18,32,.16);
  --shadow-hard-hover:12px 12px 0 rgba(10,18,32,.22);
  --shadow-dark:8px 8px 0 rgba(0,0,0,.55);
  --ease:120ms ease-out;

  --font-sans:"Helvetica Neue",Helvetica,Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}

/* 3. base -------------------------------------------------- */
body{
  background:var(--moon);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16.5px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
@media (min-width:900px){
  body{padding-left:var(--rail)}
}
:focus{outline:none}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px}
::selection{background:var(--amber);color:var(--ink)}

/* 4. 排版 -------------------------------------------------- */
.display{
  font-size:clamp(3.5rem,9vw,8rem);
  font-weight:300;
  line-height:.92;
  letter-spacing:-.02em;
}
.headline{
  font-size:clamp(1.75rem,3vw,2.6rem);
  font-weight:700;
  line-height:1.15;
  letter-spacing:-.01em;
}
.subhead{
  font-size:clamp(1.1rem,1.6vw,1.35rem);
  font-weight:600;
  line-height:1.4;
}
.numeric{
  font-family:var(--font-mono);
  font-weight:500;
  font-variant-numeric:tabular-nums;
  letter-spacing:.08em;
}
.index-label{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--moss);
}
.prose{
  max-width:34em;
  font-size:16.5px;
  line-height:1.75;
}
.prose p + p{margin-top:1em}
.on-dark{background:var(--ink);color:var(--moon)}
.on-dark .index-label{color:var(--cyan)}
.on-dark .prose{color:var(--moon)}

/* 5. 跳转与主区 -------------------------------------------- */
.skip-link{
  position:fixed;
  left:12px;
  top:-80px;
  z-index:300;
  padding:12px 18px;
  background:var(--amber);
  color:var(--ink);
  font-weight:700;
  border:2px solid var(--ink);
  transition:top var(--ease);
}
.skip-link:focus{top:12px}
@media (min-width:900px){
  .skip-link{left:calc(var(--rail) + 14px)}
}
.site-main{
  background:var(--moon);
  color:var(--ink);
  min-height:60vh;
}

/* 6. 头部：桌面左轨道 / 移动顶栏+抽屉 ---------------------- */
.site-header{
  position:relative;
  z-index:100;
  background:var(--ink);
  color:var(--moon);
}
.site-header__bar{
  display:flex;
  align-items:center;
  gap:16px;
  padding:14px 20px;
  border-bottom:2px solid var(--rock-mid);
}
.brandmark{display:flex;align-items:baseline;gap:10px;color:var(--moon)}
.brandmark__owl{
  font-family:var(--font-mono);
  font-size:22px;
  font-weight:700;
  letter-spacing:.2em;
  color:var(--amber);
  line-height:1;
}
.brandmark__cn{
  font-size:12px;
  letter-spacing:.22em;
  color:var(--stone);
}
.site-header__tagline{
  display:none;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--stone);
}
@media (min-width:560px){
  .site-header__tagline{display:block;margin-left:6px}
}
.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
  padding:10px 14px;
  border:2px solid var(--rock-mid);
  background:var(--rock);
  color:var(--moon);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
}
.nav-toggle__bars{
  position:relative;
  width:18px;
  height:12px;
  border-top:2px solid var(--cyan);
  border-bottom:2px solid var(--cyan);
}
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;right:0;top:50%;
  height:2px;
  background:var(--cyan);
  transform:translateY(-50%);
}
.nav-toggle[aria-expanded="true"]{border-color:var(--amber)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars,
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{border-color:var(--amber);background-color:var(--amber)}
.nav-toggle:hover{border-color:var(--amber)}

.rail{
  display:flex;
  flex-direction:column;
  background:var(--ink);
}
.rail__list{display:flex;flex-direction:column;gap:4px;padding:10px 12px}
.rail__item{width:100%}
.rail__link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:12px 10px;
  border:2px solid transparent;
  color:var(--moon);
  font-size:15px;
  transition:background var(--ease),border-color var(--ease),color var(--ease);
}
.rail__idx{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--stone);
}
.rail__label{letter-spacing:.1em}
.rail__link:hover{background:var(--rock);border-color:var(--rock-mid)}
.rail__link[aria-current="page"]{
  background:var(--rock);
  border-color:var(--amber);
  color:var(--amber);
}
.rail__link[aria-current="page"] .rail__idx{color:var(--cyan)}
.rail__link[aria-current="page"] .rail__label{font-weight:600}

.rail__actions{display:flex;flex-wrap:wrap;gap:10px;padding:6px 12px 14px}
.rail__cta{
  flex:1 1 140px;
  padding:12px 14px;
  border:2px solid var(--clay);
  background:var(--clay);
  color:var(--paper);
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  text-align:center;
  box-shadow:6px 6px 0 rgba(0,0,0,.5);
  transition:box-shadow var(--ease),border-color var(--ease),transform var(--ease);
}
.rail__cta--ghost{background:transparent;border-color:var(--rock-mid);color:var(--moon)}
.rail__cta:hover{border-color:var(--amber);box-shadow:10px 10px 0 rgba(0,0,0,.55);transform:translate(-2px,-2px)}

.rail__foot{
  display:flex;
  flex-direction:row;
  align-items:center;
  gap:16px;
  padding:14px 16px 20px;
  margin-top:auto;
  border-top:2px solid var(--rock-mid);
}
.rail__trace{display:flex;flex-direction:row;gap:9px;align-items:center;flex-wrap:wrap}
.rail__dot{
  width:8px;height:8px;
  padding:0;
  border:1px solid var(--stone);
  background:transparent;
}
.rail__dot.is-active{
  background:var(--cyan);
  border-color:var(--cyan);
  box-shadow:0 0 0 3px rgba(127,227,198,.18);
}
.rail__version{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--stone);
}
.rail__search{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--moon);
  border-bottom:1px solid var(--rock-mid);
}
.rail__search:hover{color:var(--amber);border-color:var(--amber)}

/* 移动端抽屉 */
@media (max-width:899.98px){
  .rail{
    position:fixed;
    inset:0;
    z-index:110;
    padding:76px 20px 28px;
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-8px);
    transition:opacity 160ms ease-out,transform 160ms ease-out,visibility 160ms linear;
  }
  .rail[data-open="true"]{opacity:1;visibility:visible;transform:none}
  html.nav-open body{overflow:hidden}
  .rail__list{padding:0}
  .rail__link{padding:16px 12px;font-size:17px}
  .rail__actions{padding:18px 0 0}
  .rail__foot{margin-top:22px}
}

/* 桌面轨道 */
@media (min-width:900px){
  .site-header{
    position:fixed;
    top:0;left:0;bottom:0;
    width:var(--rail);
    height:100%;
    display:flex;
    flex-direction:column;
    border-right:2px solid var(--rock-mid);
  }
  .site-header__bar{
    flex-direction:column;
    align-items:center;
    gap:12px;
    padding:22px 6px 18px;
    border-bottom:2px solid var(--rock-mid);
  }
  .brandmark{flex-direction:column;align-items:center;gap:10px}
  .brandmark__owl{font-size:19px;letter-spacing:.1em}
  .brandmark__cn{
    writing-mode:vertical-rl;
    font-size:11px;
    letter-spacing:.34em;
    color:var(--moon);
  }
  .site-header__tagline{display:none}
  .nav-toggle{display:none}
  .rail{flex:1;overflow-y:auto;overflow-x:hidden}
  .rail__list{padding:14px 0;gap:2px}
  .rail__link{
    flex-direction:column;
    align-items:center;
    justify-content:flex-start;
    gap:10px;
    padding:16px 4px;
    border:0;
    border-right:3px solid transparent;
  }
  .rail__label{
    writing-mode:vertical-rl;
    font-size:13px;
    letter-spacing:.2em;
  }
  .rail__link:hover{border-right-color:var(--rock-mid)}
  .rail__link[aria-current="page"]{
    border-right-color:var(--amber);
    color:var(--amber);
  }
  .rail__actions{flex-direction:column;padding:8px 8px 16px}
  .rail__cta{
    flex:0 0 auto;
    writing-mode:vertical-rl;
    padding:14px 10px;
    font-size:12px;
    letter-spacing:.16em;
    box-shadow:4px 4px 0 rgba(0,0,0,.5);
  }
  .rail__cta:hover{box-shadow:7px 7px 0 rgba(0,0,0,.55)}
  .rail__foot{
    flex-direction:column;
    gap:12px;
    padding:16px 8px 22px;
  }
  .rail__trace{flex-direction:column;gap:9px}
  .rail__search{writing-mode:vertical-rl;letter-spacing:.2em;border-bottom:0;border-right:1px solid var(--rock-mid);padding-right:4px}
  .rail__search:hover{border-right-color:var(--amber)}
}

/* 顶部阅读进度 */
.scroll-progress{
  position:fixed;
  top:0;left:0;right:0;
  height:2px;
  z-index:200;
  pointer-events:none;
  background:transparent;
}
@media (min-width:900px){
  .scroll-progress{left:var(--rail)}
}
.scroll-progress__bar{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,var(--moss),var(--amber));
}

/* 7. 页脚 -------------------------------------------------- */
.site-footer{
  background:var(--ink);
  color:var(--moon);
  border-top:2px solid var(--rock-mid);
}
.site-footer__inner{
  max-width:var(--shell);
  margin:0 auto;
  padding:56px 20px 34px;
  display:grid;
  grid-template-columns:1fr;
  gap:36px;
}
.site-footer__brand{display:flex;flex-direction:column;gap:8px}
.site-footer__owl{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(2.6rem,6vw,4rem);
  line-height:1;
  letter-spacing:.08em;
  color:var(--amber);
}
.site-footer__name{font-size:14px;letter-spacing:.3em;color:var(--moon)}
.site-footer__tag{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--stone);
}
.site-footer__cols{
  display:grid;
  grid-template-columns:1fr;
  gap:28px;
}
.foot-col__title{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--stone);
  padding-bottom:10px;
  margin-bottom:12px;
  border-bottom:2px solid var(--rock-mid);
}
.foot-col__list{display:flex;flex-direction:column;gap:10px}
.foot-col__list a{
  font-size:14.5px;
  color:var(--moon);
  border-bottom:1px solid transparent;
  transition:color var(--ease),border-color var(--ease);
}
.foot-col__list a:hover{color:var(--amber);border-bottom-color:var(--amber)}
.site-footer__contact{grid-column:1 / -1}
.site-footer__note{
  max-width:44em;
  font-size:13.5px;
  line-height:1.8;
  color:var(--stone);
}
.site-footer__mail{
  font-family:var(--font-mono);
  color:var(--amber);
  letter-spacing:.04em;
}
.site-footer__base{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  align-items:center;
  padding:18px 20px;
  border-top:2px solid var(--rock-mid);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--stone);
}
.site-footer__copy{color:var(--stone)}
.site-footer__icp{color:var(--stone)}
@media (min-width:760px){
  .site-footer__inner{grid-template-columns:1fr 2.2fr;padding:64px 48px 40px;gap:40px}
  .site-footer__cols{grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
  .site-footer__contact{grid-column:1 / -1}
  .site-footer__base{padding:20px 48px}
}
@media (min-width:1100px){
  .site-footer__inner{padding:76px 96px 48px}
  .site-footer__base{padding:20px 96px}
}

/* 8. 区块与栅格 -------------------------------------------- */
.section{padding:56px 20px}
.section__inner{max-width:var(--shell);margin:0 auto}
.section--moon{background:var(--moon);color:var(--ink)}
.section--paper{background:var(--paper);color:var(--ink)}
.section--dark{background:var(--ink);color:var(--moon)}
@media (min-width:760px){
  .section{padding:80px 48px}
}
@media (min-width:1100px){
  .section{padding:104px 96px}
}
.grid{display:grid;gap:24px;grid-template-columns:1fr}
@media (min-width:900px){
  .grid{grid-template-columns:repeat(12,minmax(0,1fr))}
  .span-3{grid-column:span 3}
  .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-9{grid-column:span 9}
  .span-12{grid-column:span 12}
}

/* 9. 面包屑与按钮 ------------------------------------------ */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--stone);
}
.breadcrumb a{color:var(--moss);border-bottom:1px solid transparent}
.breadcrumb a:hover{color:var(--amber);border-bottom-color:var(--amber)}
.breadcrumb__sep{color:var(--rock-mid)}

.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:14px 22px;
  border:2px solid var(--ink);
  background:var(--clay);
  color:var(--paper);
  font-size:14px;
  font-weight:600;
  letter-spacing:.06em;
  box-shadow:var(--shadow-hard);
  transition:box-shadow var(--ease),border-color var(--ease),transform var(--ease);
}
.btn:hover{border-color:var(--amber);box-shadow:var(--shadow-hard-hover);transform:translate(-2px,-2px)}
.btn--ghost{background:transparent;color:var(--ink)}
.btn--dark{
  background:var(--ink);
  color:var(--moon);
  border-color:var(--moon);
  box-shadow:var(--shadow-dark);
}
.btn--dark:hover{border-color:var(--amber);box-shadow:12px 12px 0 rgba(0,0,0,.6)}
.btn--ghost-light{
  background:transparent;
  color:var(--moon);
  border-color:var(--rock-mid);
  box-shadow:8px 8px 0 rgba(0,0,0,.45);
}
.btn--ghost-light:hover{border-color:var(--amber);box-shadow:12px 12px 0 rgba(0,0,0,.5)}

/* 10. 专题研究板 ------------------------------------------- */
.panel{
  background:var(--paper);
  border:2px solid var(--rock-mid);
  box-shadow:var(--shadow-hard);
  padding:24px;
  transition:box-shadow var(--ease),border-color var(--ease);
}
.panel:hover{border-color:var(--amber);box-shadow:var(--shadow-hard-hover)}
.panel--dark{
  background:var(--rock);
  border-color:var(--rock-mid);
  color:var(--moon);
  box-shadow:var(--shadow-dark);
}
.panel--dark:hover{border-color:var(--amber);box-shadow:12px 12px 0 rgba(0,0,0,.6)}
.panel__head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  padding-bottom:12px;
  margin-bottom:16px;
  border-bottom:2px solid var(--rock-mid);
}
.panel__abstract{
  font-size:16.5px;
  line-height:1.75;
  max-width:34em;
}
.panel__evidence{
  margin-top:18px;
  padding-top:16px;
  border-top:1px dashed var(--hair);
}
.panel__notes{
  margin-top:18px;
  padding:14px 16px;
  border-left:2px solid var(--moss);
  background:rgba(76,107,87,.07);
  font-size:13.5px;
  line-height:1.7;
  color:var(--rock-mid);
}
.panel--dark .panel__notes{
  background:rgba(127,227,198,.06);
  color:var(--stone);
}
.panel__read{
  margin-top:18px;
  padding-top:14px;
  border-top:2px solid var(--rock-mid);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--moss);
}
.panel--dark .panel__read{color:var(--cyan)}
.panel__read a{border-bottom:1px solid currentColor}
.panel__read a:hover{color:var(--amber)}

/* 11. 榜单数据条 ------------------------------------------- */
.data-list{border-top:2px solid var(--rock-mid)}
.data-list__item{
  display:grid;
  grid-template-columns:56px 1fr auto;
  gap:16px;
  align-items:baseline;
  padding:14px 0;
  border-bottom:1px solid var(--hair);
}
.data-list__rank{
  font-family:var(--font-mono);
  font-size:14px;
  font-variant-numeric:tabular-nums;
  letter-spacing:.08em;
  color:var(--amber);
}
.data-list__name{font-size:16px;font-weight:500}
.data-list__value{
  font-family:var(--font-mono);
  font-size:16px;
  font-variant-numeric:tabular-nums;
  letter-spacing:.08em;
  color:var(--moss);
}
.on-dark .data-list,
.panel--dark .data-list{border-top-color:var(--rock-mid)}
.on-dark .data-list__item,
.panel--dark .data-list__item{border-bottom-color:rgba(126,136,131,.28)}
.on-dark .data-list__value,
.panel--dark .data-list__value{color:var(--cyan)}

/* 12. 筛选标签 --------------------------------------------- */
.chip-group{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  border:2px solid var(--rock-mid);
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  transition:background var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.chip:hover{border-color:var(--amber)}
.chip[aria-pressed="true"]{
  background:var(--amber);
  border-color:var(--ink);
  color:var(--ink);
  box-shadow:4px 4px 0 var(--ink);
}
.on-dark .chip,
.panel--dark .chip{background:var(--rock);color:var(--moon);border-color:var(--rock-mid)}
.on-dark .chip[aria-pressed="true"],
.panel--dark .chip[aria-pressed="true"]{background:var(--amber);color:var(--ink);border-color:var(--moon);box-shadow:4px 4px 0 rgba(0,0,0,.5)}

/* 13. 折叠区块 --------------------------------------------- */
.fold{
  border:2px solid var(--rock-mid);
  background:var(--paper);
  color:var(--ink);
}
.fold + .fold{margin-top:-2px}
.fold__summary{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  padding:16px 20px;
  font-weight:600;
  cursor:pointer;
  list-style:none;
}
.fold__summary::-webkit-details-marker{display:none}
.fold__summary::after{
  content:"+";
  font-family:var(--font-mono);
  font-size:16px;
  color:var(--clay);
}
.fold[open] .fold__summary::after{content:"–"}
.fold__summary:hover{color:var(--clay)}
.fold__body{
  padding:16px 20px 20px;
  border-top:1px solid var(--hair);
  font-size:15px;
  line-height:1.75;
  max-width:44em;
}
.on-dark .fold{
  background:var(--rock);
  color:var(--moon);
  border-color:var(--rock-mid);
}
.on-dark .fold__body{border-top-color:rgba(126,136,131,.3);color:var(--moon)}

/* 14. 旁注与权益提示 --------------------------------------- */
.aside-note{
  max-width:22em;
  padding-left:16px;
  border-left:2px solid var(--moss);
  font-size:13.5px;
  line-height:1.7;
  color:var(--rock-mid);
}
.aside-note__title{
  display:block;
  margin-bottom:6px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--moss);
}
.on-dark .aside-note,
.panel--dark .aside-note{color:var(--stone)}
.on-dark .aside-note__title,
.panel--dark .aside-note__title{color:var(--cyan)}

.callout{
  background:var(--paper);
  border:2px solid var(--clay);
  box-shadow:8px 8px 0 rgba(184,92,51,.22);
  padding:20px;
}
.callout__label{
  display:block;
  margin-bottom:8px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--clay);
}
.callout p{font-size:15px;line-height:1.75;max-width:34em}

/* 15. 图片容器 --------------------------------------------- */
.figure-frame{
  background:var(--moon);
  border:1px solid var(--moss);
  padding:10px;
}
.figure-frame__media{
  position:relative;
  width:100%;
  aspect-ratio:16 / 10;
  overflow:hidden;
  background-color:var(--rock);
  background-image:
    linear-gradient(rgba(127,227,198,.14) 1px,transparent 1px),
    linear-gradient(90deg,rgba(127,227,198,.14) 1px,transparent 1px);
  background-size:32px 32px;
}
.figure-frame__media img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.figure-frame__cap{
  margin-top:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--rock-mid);
}
.figure-frame--dark{background:var(--rock);border-color:var(--rock-mid)}
.figure-frame--dark .figure-frame__cap{color:var(--stone)}
.figure-frame--wide .figure-frame__media{aspect-ratio:21 / 9}
.figure-frame--square .figure-frame__media{aspect-ratio:1 / 1}
.figure-frame--portrait .figure-frame__media{aspect-ratio:3 / 4}

/* 16. 渐显 ------------------------------------------------- */
.js [data-reveal]{
  opacity:0;
  transform:translateY(8px);
}
.js [data-reveal].is-visible{
  opacity:1;
  transform:none;
  transition:opacity var(--ease),transform var(--ease);
}

/* 17. 无障碍降级 ------------------------------------------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  .js [data-reveal]{opacity:1;transform:none}
  .btn:hover,
  .rail__cta:hover{transform:none}
}