/* ============================================================
   M88体育CN地标入口 — 共享样式 /assets/site.css
   深墨绿地标夜底色 + 霓虹青 / 信号橙双点光源
   ============================================================ */

/* ---------- 1. 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,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
img,picture,svg,video{display:block;max-width:100%}
table{border-collapse:collapse;width:100%}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}

/* ---------- 2. 变量 ---------- */
:root{
  --ink:#0A2320;        /* 地标墨绿 */
  --teal:#0F3B38;       /* 深水青 */
  --cement:#38403E;     /* 水泥灰 */
  --bone:#F3F1EA;       /* 骨白 */
  --paper:#14201E;      /* 纸黑 */
  --neon:#3FE0CE;       /* 霓虹青 */
  --orange:#FF6B35;     /* 信号橙 */
  --wine:#6B1F35;       /* 酒红 */
  --indigo:#2B2A5A;     /* 靛紫 */
  --mist:#93A09C;       /* 雾灰 */
  --pale:#CFF3ED;       /* 浅青雾 */

  --line:rgba(63,224,206,.18);
  --line-soft:rgba(147,160,156,.22);
  --rail-w:184px;
  --container:1280px;

  --r-xl:32px;
  --r-lg:24px;
  --r-md:16px;
  --r-pill:999px;

  --font-display:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-serif:"Songti SC","Source Han Serif SC","Noto Serif SC",Georgia,"Times New Roman",serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Roboto Mono","Courier New",monospace;

  --ease:cubic-bezier(0.22,0.61,0.36,1);
  --shadow-lift:0 22px 50px rgba(0,0,0,.38);
}

/* ---------- 3. 基础排版 ---------- */
body{
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.8;
  letter-spacing:.012em;
  color:var(--bone);
  background-color:var(--ink);
  background-image:
    radial-gradient(circle at 10% 4%, rgba(63,224,206,.10), transparent 44%),
    radial-gradient(circle at 92% 2%, rgba(255,107,53,.07), transparent 46%),
    radial-gradient(circle at 50% 118%, rgba(43,42,90,.34), transparent 62%);
  background-attachment:fixed;
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
@media (min-width:768px){body{font-size:16.5px}}
@media (min-width:1024px){body{font-size:17px;padding-right:var(--rail-w)}}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;line-height:1.12;letter-spacing:-.02em;color:#fff}
h1{font-size:clamp(30px,8.4vw,88px)}
h2{font-size:clamp(26px,5vw,48px)}
h3{font-size:clamp(20px,3vw,28px)}
h4{font-size:clamp(17px,2vw,20px);letter-spacing:0}
p{max-width:38em}

.serif-title{font-family:var(--font-serif);font-weight:700;letter-spacing:.01em;line-height:1.26}
.label-en{font-size:12px;text-transform:uppercase;letter-spacing:.28em;color:var(--mist);line-height:1.5}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;color:var(--orange);font-weight:600;letter-spacing:.02em}
.meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--mist)}

#main-content{display:block;scroll-margin-top:96px}
[data-section]{scroll-margin-top:96px}

/* ---------- 4. 版心与网格 ---------- */
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:clamp(18px,4.2vw,56px)}
.grid{display:grid;gap:24px;grid-template-columns:repeat(12,minmax(0,1fr))}
.span-12{grid-column:span 12}
.span-7,.span-6,.span-5,.span-4{grid-column:span 12}
@media (min-width:768px){
  .span-6{grid-column:span 6}
  .span-5{grid-column:span 5}
  .span-4{grid-column:span 4}
}
@media (min-width:1024px){
  .span-7{grid-column:span 7}
  .span-5{grid-column:span 5}
  .span-4{grid-column:span 4}
}
.prose{max-width:38em;color:rgba(243,241,234,.86)}

/* ---------- 5. 跳转链接 / 焦点 ---------- */
.skip-link{
  position:fixed;top:8px;left:8px;z-index:200;
  padding:12px 20px;border-radius:var(--r-pill);
  background:var(--neon);color:var(--ink);
  font-size:13px;font-weight:700;letter-spacing:.08em;
  transform:translateY(-160%);
  transition:transform 260ms var(--ease);
}
.skip-link:focus-visible,.skip-link:focus{transform:translateY(0)}
:focus-visible{outline:2px solid var(--neon);outline-offset:3px;border-radius:6px}

/* ---------- 6. 按钮与标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 26px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:700;letter-spacing:.06em;
  border:1px solid transparent;
  transition:background-color 240ms var(--ease),color 240ms var(--ease),
             border-color 240ms var(--ease),transform 240ms var(--ease);
}
.btn--primary{background:var(--orange);color:#14100C}
.btn--primary:hover{background:var(--neon);color:var(--ink);transform:translateY(-2px)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--pale)}
.btn--ghost:hover{border-color:var(--neon);color:#fff;transform:translateY(-2px)}

.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(15,59,56,.6);
  font-size:12.5px;letter-spacing:.1em;color:var(--pale);
}
.tag,.chip{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:var(--r-pill);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;
  text-transform:uppercase;
}
.tag{background:rgba(255,107,53,.16);color:var(--orange);border:1px solid rgba(255,107,53,.34)}
.chip{background:rgba(63,224,206,.12);color:var(--neon);border:1px solid var(--line)}

/* ---------- 7. 面包屑 ---------- */
.breadcrumb{padding-block:18px 0}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--mist)}
.breadcrumb__item{display:inline-flex;align-items:center;gap:10px}
.breadcrumb__item+ .breadcrumb__item::before{content:"/";color:var(--cement)}
.breadcrumb__link{color:var(--mist);transition:color 200ms var(--ease)}
.breadcrumb__link:hover{color:var(--neon)}
.breadcrumb__item[aria-current="page"]{color:var(--pale)}

/* ---------- 8. 头部 ---------- */
.site-header{
  position:relative;z-index:60;
  display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:clamp(18px,3vw,34px) clamp(18px,4.2vw,56px) clamp(16px,2.6vw,28px);
  background:linear-gradient(180deg,rgba(10,35,32,.94),rgba(10,35,32,.6) 62%,rgba(10,35,32,0));
}
.site-header__brand{display:flex;flex-direction:column;gap:8px;max-width:min(60vw,420px)}
.brandmark{display:inline-flex;flex-direction:column;gap:5px}
.brandmark__cn{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(20px,2.6vw,26px);letter-spacing:.06em;color:#fff;line-height:1.1;
}
.brandmark__en{
  font-size:11px;text-transform:uppercase;letter-spacing:.34em;
  color:var(--neon);line-height:1.4;
}
.brandmark__tag{font-size:12.5px;letter-spacing:.1em;color:var(--mist);max-width:24em}

/* 移动端抽屉按钮 */
.nav-toggle{
  position:fixed;top:14px;right:14px;z-index:95;
  display:inline-flex;align-items:center;gap:10px;
  padding:11px 18px;border-radius:var(--r-pill);
  background:rgba(15,59,56,.94);border:1px solid var(--line);
  color:var(--bone);font-size:12.5px;letter-spacing:.16em;
  backdrop-filter:blur(6px);
  transition:border-color 220ms var(--ease),background-color 220ms var(--ease);
}
.nav-toggle:hover{border-color:var(--neon)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:18px}
.nav-toggle__bars i{display:block;height:2px;border-radius:2px;background:var(--neon);transition:transform 260ms var(--ease),opacity 200ms var(--ease)}
.nav-toggle__bars i:nth-child(2){width:74%}
.nav-toggle__bars i:nth-child(3){width:52%}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg);width:100%}

/* 侧边轨道导航 */
.site-rail{
  position:fixed;top:0;right:0;z-index:90;
  display:flex;flex-direction:column;gap:20px;
  width:min(86vw,340px);height:100vh;
  padding:80px 24px 28px;
  background:linear-gradient(180deg,#0F3B38 0%,#0A2320 72%);
  border-left:1px solid var(--line);
  box-shadow:-26px 0 60px rgba(0,0,0,.46);
  overflow-y:auto;
  transform:translateX(102%);
  pointer-events:none;
  transition:transform 380ms var(--ease);
}
.site-rail[data-open]{transform:translateX(0);pointer-events:auto}
@media (min-width:1024px){
  .site-rail{
    width:var(--rail-w);height:100vh;padding:34px 20px 26px;
    transform:none;pointer-events:auto;box-shadow:none;
  }
  .nav-toggle{display:none}
}
.site-rail__eyebrow{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.3em;
  text-transform:uppercase;color:var(--mist);max-width:none;
}
.site-rail__eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--neon);flex:none}
.site-rail__list{display:flex;flex-direction:column;gap:4px}
.rail-link{
  display:flex;align-items:baseline;gap:12px;
  padding:11px 13px;border-radius:var(--r-md);
  color:rgba(207,243,237,.82);
  transition:background-color 220ms var(--ease),color 220ms var(--ease),transform 260ms var(--ease);
}
.rail-link:hover{background:rgba(63,224,206,.08);color:#fff;transform:translateX(-3px)}
.rail-link__idx{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--orange);flex:none}
.rail-link__label{position:relative;font-size:15px;letter-spacing:.06em;display:inline-block}
.rail-link__label::after{
  content:"";position:absolute;left:0;bottom:-5px;height:2px;width:100%;
  border-radius:2px;background:var(--neon);
  transform:scaleX(0);transform-origin:left center;
  transition:transform 320ms var(--ease);
}
.rail-link[aria-current="page"]{
  background:linear-gradient(90deg,rgba(63,224,206,.18),rgba(63,224,206,.02));
  color:#fff;
}
.rail-link[aria-current="page"] .rail-link__label::after{transform:scaleX(1)}
.rail-link[aria-current="page"] .rail-link__idx{color:var(--neon)}

/* 轨道进度读数 */
.rail-track{display:flex;flex-direction:column;gap:9px;padding-block:4px}
.rail-track__label{
  display:flex;align-items:baseline;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--pale);
  max-width:none;
}
.rail-track__key{color:var(--orange);text-transform:uppercase;letter-spacing:.2em;font-size:10px}
.rail-track__bar{height:2px;border-radius:2px;background:rgba(56,64,62,.9);overflow:hidden}
.rail-track__fill{
  display:block;height:100%;width:100%;border-radius:2px;
  background:linear-gradient(90deg,var(--neon),var(--orange));
  transform:scaleX(0);transform-origin:left center;
  transition:transform 180ms linear;
}

.site-rail__utils{display:flex;flex-direction:column;gap:9px;
  padding-top:16px;border-top:1px dashed var(--line-soft)}
.util-link{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;letter-spacing:.08em;color:var(--mist);
  transition:color 200ms var(--ease),transform 240ms var(--ease);
}
.util-link::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cement);flex:none;transition:background-color 200ms var(--ease)}
.util-link:hover{color:var(--neon);transform:translateX(2px)}
.util-link:hover::before{background:var(--neon)}

.site-rail__foot{margin-top:auto;padding-top:18px}
.rail-cta{
  display:block;text-align:center;
  padding:14px 16px;border-radius:var(--r-pill);
  background:var(--orange);color:#14100C;
  font-size:13.5px;font-weight:800;letter-spacing:.08em;
  transition:background-color 240ms var(--ease),color 240ms var(--ease),transform 240ms var(--ease);
}
.rail-cta:hover{background:var(--neon);color:var(--ink);transform:translateY(-2px)}

/* 抽屉遮罩 */
.nav-scrim{
  position:fixed;inset:0;z-index:85;
  background:rgba(6,18,16,.66);
  opacity:0;pointer-events:none;
  transition:opacity 300ms var(--ease);
}
.nav-scrim[data-open]{opacity:1;pointer-events:auto}
@media (min-width:1024px){.nav-scrim{display:none}}
@media (max-width:1023px){body[data-nav-open]{overflow:hidden}}

/* ---------- 9. 页脚 ---------- */
.site-footer{
  position:relative;margin-top:clamp(48px,7vw,110px);
  padding:clamp(34px,5vw,64px) clamp(18px,4.2vw,56px) clamp(26px,4vw,44px);
  background:linear-gradient(180deg,rgba(15,59,56,.55),rgba(10,35,32,.98) 68%);
  border-top:1px solid var(--line);
  color:var(--pale);
}
.site-footer__inner{
  display:grid;gap:clamp(26px,4vw,54px);
  max-width:var(--container);margin-inline:auto;
  grid-template-columns:1fr;
}
@media (min-width:768px){
  .site-footer__inner{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
}
.footer-brand{display:flex;flex-direction:column;gap:14px}
.footer-brand__note{font-size:13px;line-height:1.9;color:var(--mist);max-width:30em}
.footer-links{display:grid;gap:26px;grid-template-columns:1fr}
@media (min-width:560px){.footer-links{grid-template-columns:repeat(2,minmax(0,1fr))}}
.footer-col{display:flex;flex-direction:column;gap:12px}
.footer-col__title{
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.26em;text-transform:uppercase;color:var(--mist);
}
.footer-col__list{display:flex;flex-direction:column;gap:9px}
.footer-col__list a{
  font-size:13.5px;letter-spacing:.05em;color:rgba(243,241,234,.86);
  transition:color 200ms var(--ease),padding-left 200ms var(--ease);
}
.footer-col__list a:hover{color:var(--neon);padding-left:6px}

.footer-contact{
  max-width:var(--container);margin:clamp(26px,4vw,44px) auto 0;
  padding-top:20px;border-top:1px solid var(--line-soft);
}
.footer-contact__line{font-size:12.5px;line-height:1.9;color:var(--mist);max-width:none}

.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px;
  max-width:var(--container);margin:20px auto 0;
}
.footer-legal__links{display:flex;flex-wrap:wrap;gap:16px}
.footer-legal__links a{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;color:var(--pale);
  transition:color 200ms var(--ease);
}
.footer-legal__links a:hover{color:var(--neon)}
.footer-icp,.footer-copy{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--mist);max-width:none;
}
.footer-copy{margin-left:auto}
@media (max-width:639px){.footer-copy{margin-left:0}}

/* ---------- 10. 底部浮动 ---------- */
.float-dock{
  position:fixed;right:16px;bottom:16px;z-index:70;
  display:flex;align-items:center;gap:10px;
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity 320ms var(--ease),transform 320ms var(--ease);
}
.float-dock[data-visible]{opacity:1;transform:none;pointer-events:auto}
@media (min-width:1024px){.float-dock{right:calc(var(--rail-w) + 20px);bottom:22px}}
.return-pill{
  display:inline-flex;align-items:center;
  padding:11px 20px;border-radius:var(--r-pill);
  background:rgba(15,59,56,.92);border:1px solid var(--line);
  color:var(--pale);font-size:12.5px;letter-spacing:.1em;
  box-shadow:var(--shadow-lift);
  transition:border-color 220ms var(--ease),color 220ms var(--ease);
}
.return-pill:hover{border-color:var(--neon);color:#fff}
.to-top{
  width:42px;height:42px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(10,35,32,.92);border:1px solid var(--line);
  color:var(--neon);font-size:15px;line-height:1;
  box-shadow:var(--shadow-lift);
  transition:border-color 220ms var(--ease),background-color 220ms var(--ease);
}
.to-top:hover{border-color:var(--neon);background:var(--teal)}

/* ---------- 11. 章节锚点与堆叠面板 ---------- */
.section-anchor{
  display:flex;align-items:center;gap:12px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.24em;
  text-transform:uppercase;color:var(--neon);
  margin-bottom:18px;
}
.section-anchor::after{content:"";height:1px;flex:1;background:linear-gradient(90deg,var(--line),transparent)}

.panel{
  position:relative;
  background:linear-gradient(160deg,rgba(15,59,56,.96),rgba(10,35,32,.9));
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  padding:clamp(22px,3.4vw,44px);
  box-shadow:var(--shadow-lift);
}
.panel--bone{
  background:linear-gradient(160deg,#F7F5EF,#E9E5DA);
  border-color:rgba(20,32,30,.1);
  color:var(--paper);
}
.panel--bone h1,.panel--bone h2,.panel--bone h3,.panel--bone h4{color:var(--paper)}
.panel--bone .prose{color:rgba(20,32,30,.82)}
.panel--wine{background:linear-gradient(160deg,rgba(107,31,53,.94),rgba(10,35,32,.92));border-color:rgba(255,107,53,.26)}
.panel--indigo{background:linear-gradient(160deg,rgba(43,42,90,.94),rgba(10,35,32,.92));border-color:rgba(63,224,206,.24)}
.panel__eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.26em;
  text-transform:uppercase;color:var(--neon);margin-bottom:14px;
}
.panel__eyebrow::before{content:"";width:20px;height:2px;border-radius:2px;background:var(--neon)}
.panel__num{font-family:var(--font-mono);font-size:13px;letter-spacing:.14em;color:var(--orange)}
.panel+.panel{margin-top:clamp(18px,3vw,32px)}
.panel--overlap{margin-top:clamp(-34px,-3vw,-16px)}

/* ---------- 12. 卡片与图片容器 ---------- */
.card{
  display:flex;flex-direction:column;gap:12px;
  padding:clamp(18px,2.4vw,26px);
  border-radius:var(--r-lg);
  background:rgba(15,59,56,.72);
  border:1px solid var(--line-soft);
  transition:transform 280ms var(--ease),border-color 280ms var(--ease),box-shadow 280ms var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--neon);box-shadow:var(--shadow-lift)}
.card__title{font-size:clamp(17px,2vw,20px);line-height:1.3}

.media-frame{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  aspect-ratio:16/10;
  background:
    radial-gradient(circle at 20% 12%, rgba(63,224,206,.22), transparent 55%),
    radial-gradient(circle at 82% 88%, rgba(255,107,53,.20), transparent 58%),
    linear-gradient(160deg,#0F3B38,#0A2320);
  border:1px solid var(--line);
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame__tag{
  position:absolute;left:14px;bottom:14px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(10,35,32,.78);border:1px solid var(--line);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--pale);
}

/* ---------- 13. 时间轴 ---------- */
.timeline{display:flex;flex-direction:column;gap:22px;position:relative}
.timeline__item{
  position:relative;display:grid;gap:8px;
  padding-left:28px;
}
.timeline__item::before{
  content:"";position:absolute;left:5px;top:26px;bottom:-22px;width:1px;
  background:linear-gradient(180deg,var(--line),transparent);
}
.timeline__item:last-child::before{display:none}
.timeline__dot{
  position:absolute;left:0;top:9px;
  width:11px;height:11px;border-radius:50%;
  background:var(--orange);box-shadow:0 0 0 4px rgba(255,107,53,.16);
}
.timeline__meta{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;color:var(--mist);text-transform:uppercase}
.timeline__body{font-size:15.5px;line-height:1.8;color:rgba(243,241,234,.86);max-width:34em}

/* ---------- 14. 可展开内容组 ---------- */
.accordion{display:flex;flex-direction:column;gap:12px}
.accordion__item{
  border-radius:var(--r-lg);
  border:1px solid var(--line-soft);
  background:rgba(15,59,56,.55);
  overflow:hidden;
  transition:border-color 240ms var(--ease),background-color 240ms var(--ease);
}
.accordion__item[data-expanded]{border-color:var(--line);background:rgba(15,59,56,.82)}
.accordion__trigger{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;text-align:left;
  padding:18px 20px 18px 24px;
  font-size:15.5px;font-weight:600;letter-spacing:.02em;color:var(--bone);
  transition:color 200ms var(--ease);
}
.accordion__trigger::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;
  background:var(--neon);transform:scaleY(0);transform-origin:top center;
  transition:transform 300ms var(--ease);
}
.accordion__trigger::after{
  content:"+";font-family:var(--font-mono);font-size:18px;line-height:1;color:var(--neon);flex:none;
  transition:transform 300ms var(--ease);
}
.accordion__trigger[aria-expanded="true"]::before{transform:scaleY(1)}
.accordion__trigger[aria-expanded="true"]::after{transform:rotate(45deg)}
.accordion__trigger:hover{color:#fff}
.accordion__panel{
  display:none;
  padding:0 22px 20px 24px;
  font-size:15px;line-height:1.85;color:rgba(243,241,234,.84);
}
.accordion__item[data-expanded] .accordion__panel{display:block}

/* ---------- 15. 进入动效 ---------- */
.js-reveal [data-reveal]{
  opacity:0;transform:translateY(24px);
  transition:opacity 420ms var(--ease),transform 420ms var(--ease);
}
.js-reveal [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 16. 减少动效 ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .js-reveal [data-reveal]{opacity:1;transform:none}
  .site-rail{transition:none}
  .rail-track__fill{transition:none}
  .float-dock{transform:none}
}