/* ============================================================
   幻影体育安装 / assets/site.css
   夜间赛场指挥中心 · 非对称编辑部版式 · 侧边轨道导航
   ============================================================ */

/* ---------- 1. 设计变量 ---------- */
:root{
  --ink-900:#070A09;
  --ink-800:#0F1412;
  --ink-700:#1B2630;
  --mist:#E9F0E7;
  --lime:#B7FF2A;
  --lime-deep:#6FA800;
  --amber:#FFB000;
  --pitch:#1E3A24;
  --mute:#7C8A84;
  --signal:#FF5C5C;

  --hair:rgba(233,240,231,.12);
  --hair-soft:rgba(233,240,231,.07);
  --hair-strong:rgba(233,240,231,.26);
  --mist-80:rgba(233,240,231,.80);
  --mist-66:rgba(233,240,231,.66);
  --mist-50:rgba(233,240,231,.50);

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

  --rail-w:104px;
  --header-h:61px;
  --shell-max:1280px;
  --radius:2px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. Reset 与中文排版基座 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--mist);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.78;
  letter-spacing:.012em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(900px 620px at 96% -12%, rgba(183,255,42,.10), transparent 62%),
    radial-gradient(680px 520px at -6% 104%, rgba(30,58,36,.55), transparent 68%),
    repeating-linear-gradient(90deg, rgba(233,240,231,.030) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(233,240,231,.022) 0 1px, transparent 1px 96px);
}
main{position:relative;z-index:1;display:block}
img,svg,video,picture{display:block;max-width:100%}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-serif);
  font-weight:600;
  line-height:1.26;
  letter-spacing:.015em;
  margin:0;
  text-wrap:balance;
}
p{margin:0}
ul,ol{margin:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
table{border-collapse:collapse;width:100%}
::selection{background:var(--lime);color:#06110A}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:1px}

/* ---------- 3. 布局容器与栅格 ---------- */
.shell{
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:clamp(20px,5vw,64px);
}
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2vw,28px);
}
.hairline{
  display:block;
  height:1px;
  border:0;
  margin:0;
  background:var(--hair);
}

/* ---------- 4. 文本与标签组件 ---------- */
.eyebrow{
  display:flex;
  align-items:center;
  gap:10px;
  margin:0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.30em;
  text-transform:uppercase;
  color:var(--lime);
}
.eyebrow::before{
  content:"";
  width:22px;
  height:1px;
  background:var(--lime);
  flex:none;
}
.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.01em;
}
.display-num{
  display:block;
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(3rem,13vw,9rem);
  line-height:.86;
  letter-spacing:-.04em;
  color:var(--mist);
  font-variant-numeric:tabular-nums;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:4px 11px;
  border:1px solid var(--hair-strong);
  border-radius:999px;
  background:rgba(233,240,231,.03);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--mist-80);
  white-space:nowrap;
}
.tag::before{
  content:"";
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--lime);
  flex:none;
}
.tag--amber{
  color:var(--amber);
  border-color:rgba(255,176,0,.50);
  background:rgba(255,176,0,.08);
}
.tag--amber::before{background:var(--amber)}
.tag--signal{
  color:var(--signal);
  border-color:rgba(255,92,92,.45);
  background:rgba(255,92,92,.08);
}
.tag--signal::before{background:var(--signal)}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 22px;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:600;
  letter-spacing:.06em;
  cursor:pointer;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease);
}
.btn--primary{background:var(--lime);color:#06110A}
.btn--primary:hover{background:#cbff62}
.btn--ghost{border-color:var(--hair-strong);color:var(--mist);background:rgba(233,240,231,.02)}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime);background:rgba(183,255,42,.06)}
.btn--amber{border-color:rgba(255,176,0,.55);color:var(--amber);background:rgba(255,176,0,.08)}
.btn--amber:hover{background:rgba(255,176,0,.18);color:#FFC64A}
.btn:active{transform:translateY(1px)}

/* ---------- 6. 面板 / 面包屑 / 正文 / 图片容器 ---------- */
.panel{
  background:linear-gradient(160deg, rgba(27,38,48,.72), rgba(15,20,18,.88));
  border:1px solid var(--hair);
  border-radius:var(--radius);
  padding:clamp(20px,2.4vw,34px);
}
.breadcrumb{margin-bottom:clamp(20px,3vw,36px)}
.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0;
  padding:0;
  list-style:none;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--mute);
}
.breadcrumb__link{color:var(--mute);transition:color .2s var(--ease)}
.breadcrumb__link:hover{color:var(--lime)}
.breadcrumb__sep{color:rgba(124,138,132,.55)}
.breadcrumb [aria-current="page"]{color:var(--mist)}
.prose{
  max-width:68ch;
  font-size:17px;
  line-height:1.92;
  color:var(--mist-80);
}
.prose > * + *{margin-top:1.1em}
.prose h2{
  font-size:clamp(1.35rem,2.4vw,1.9rem);
  color:var(--mist);
  margin-top:2.1em;
}
.prose h3{
  font-size:clamp(1.1rem,1.8vw,1.3rem);
  color:var(--mist);
  margin-top:1.8em;
}
.prose strong{color:var(--lime);font-weight:600}
.prose ul,.prose ol{padding-left:1.2em}
.prose li + li{margin-top:.5em}
.prose li::marker{color:var(--lime-deep)}
.prose a{color:var(--lime);border-bottom:1px solid rgba(183,255,42,.35)}
.prose a:hover{border-bottom-color:var(--lime)}
.media-frame{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16 / 9;
  overflow:hidden;
  border:1px solid var(--hair);
  border-radius:var(--radius);
  background:
    repeating-linear-gradient(118deg, rgba(183,255,42,.07) 0 1px, transparent 1px 26px),
    linear-gradient(152deg, #10201A 0%, #0B100E 52%, var(--ink-900) 100%);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:10px;
  pointer-events:none;
  border-top:1px solid rgba(183,255,42,.35);
  border-left:1px solid rgba(183,255,42,.35);
  clip-path:polygon(0 0,34% 0,34% 1px,1px 1px,1px 34%,0 34%);
  opacity:.9;
}
.media-frame > img,
.media-frame > picture,
.media-frame > video{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame--tall{aspect-ratio:4 / 5}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame__caption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:14px 16px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--mist-66);
  background:linear-gradient(0deg, rgba(7,10,9,.92), rgba(7,10,9,0));
}

/* ---------- 7. 头部：侧边轨道 ---------- */
.skip-link{
  position:absolute;
  left:12px;
  top:-120px;
  z-index:200;
  padding:10px 16px;
  background:var(--lime);
  color:#06110A;
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  border-radius:var(--radius);
  transition:top .2s var(--ease);
}
.skip-link:focus{top:12px}

.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,10,9,.94);
  border-bottom:1px solid var(--hair);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.rail{
  display:flex;
  align-items:center;
  gap:14px;
  height:60px;
  padding-inline:clamp(16px,4vw,24px);
}
.rail__brand{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
}
.rail__mark{
  position:relative;
  display:block;
  flex:none;
  width:26px;
  height:26px;
  border:1px solid var(--hair-strong);
  border-radius:1px;
  background:
    linear-gradient(135deg, transparent 46%, var(--lime) 46% 54%, transparent 54%),
    radial-gradient(circle at 74% 26%, rgba(183,255,42,.42), transparent 68%),
    linear-gradient(180deg, #0F1A15, #070A09);
}
.rail__brand-text{display:flex;flex-direction:column;gap:2px;min-width:0}
.rail__name{
  font-family:var(--font-serif);
  font-size:16px;
  letter-spacing:.06em;
  color:var(--mist);
  white-space:nowrap;
}
.rail__tagline{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.20em;
  color:var(--mute);
  white-space:nowrap;
}
.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:9px;
  margin-left:auto;
  padding:8px 12px;
  border:1px solid var(--hair-strong);
  border-radius:var(--radius);
  color:var(--mist);
  font-size:12px;
  letter-spacing:.16em;
  cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime)}
.nav-toggle__bars{position:relative;display:block;width:16px;height:10px;flex:none}
.nav-toggle__bars span{
  position:absolute;
  left:0;
  width:16px;
  height:1.5px;
  background:var(--lime);
  transition:transform .25s var(--ease),opacity .2s var(--ease);
}
.nav-toggle__bars span:nth-child(1){top:0}
.nav-toggle__bars span:nth-child(2){bottom:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(4.2px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){transform:translateY(-4.2px) rotate(-45deg)}
.nav-toggle__label{line-height:1}

.site-nav{
  position:fixed;
  left:0;
  right:0;
  top:var(--header-h);
  z-index:59;
  display:flex;
  flex-direction:column;
  gap:6px;
  max-height:calc(100dvh - var(--header-h));
  overflow-y:auto;
  padding:18px clamp(16px,4vw,24px) 26px;
  background:linear-gradient(180deg,#0C120F,#070A09);
  border-bottom:1px solid var(--hair);
  box-shadow:0 30px 48px -28px rgba(0,0,0,.95);
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transform:translateY(-10px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s linear;
}
.site-nav[data-open]{
  opacity:1;
  visibility:visible;
  pointer-events:auto;
  transform:none;
}
.site-nav__quick{
  display:inline-flex;
  align-items:center;
  gap:9px;
  align-self:flex-start;
  margin-bottom:12px;
  padding:6px 14px;
  border:1px solid rgba(255,176,0,.55);
  border-radius:999px;
  background:rgba(255,176,0,.08);
  color:var(--amber);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.site-nav__quick::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--amber);
  box-shadow:0 0 0 3px rgba(255,176,0,.18);
  flex:none;
}
.site-nav__quick:hover{background:rgba(255,176,0,.18);color:#FFC64A}
.site-nav__eyebrow{
  margin:0 0 2px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.30em;
  text-transform:uppercase;
  color:var(--mute);
}
.site-nav__list{
  display:flex;
  flex-direction:column;
  gap:2px;
  margin:0;
  padding:0;
  list-style:none;
}
.site-nav__link{
  display:flex;
  align-items:baseline;
  gap:12px;
  padding:12px 10px;
  border-left:2px solid transparent;
  border-radius:1px;
  color:var(--mist-80);
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.site-nav__link:hover{
  color:var(--mist);
  background:rgba(233,240,231,.045);
  border-left-color:var(--lime-deep);
}
.site-nav__link[aria-current="page"]{
  color:var(--lime);
  border-left-color:var(--lime);
  background:linear-gradient(90deg, rgba(183,255,42,.12), rgba(183,255,42,0) 72%);
}
.site-nav__index{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.20em;
  color:var(--mute);
}
.site-nav__link[aria-current="page"] .site-nav__index{color:var(--amber)}
.site-nav__label{font-size:14px;letter-spacing:.08em}
.site-nav__cta{
  display:flex;
  align-items:center;
  justify-content:center;
  margin-top:14px;
  padding:12px 18px;
  border-radius:var(--radius);
  background:var(--lime);
  color:#06110A;
  font-size:13px;
  font-weight:700;
  letter-spacing:.10em;
  transition:background .2s var(--ease);
}
.site-nav__cta:hover{background:#cbff62}

.rail__progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  pointer-events:none;
  background:rgba(233,240,231,.06);
}
.rail__progress::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg, var(--lime-deep), var(--lime));
  transform:scaleX(var(--read-progress,0));
  transform-origin:left center;
  transition:transform .12s linear;
}

/* ---------- 8. 桌面端：轨道竖排 + 左移布局 ---------- */
@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
  .site-header{
    position:fixed;
    inset:0 auto 0 0;
    width:var(--rail-w);
    border-bottom:0;
    border-right:1px solid var(--hair);
    background:linear-gradient(180deg,#0C120F 0%,#080D0B 56%,#070A09 100%);
    -webkit-backdrop-filter:none;
    backdrop-filter:none;
  }
  .rail{
    flex-direction:column;
    align-items:stretch;
    height:100%;
    padding:18px 10px 18px;
    gap:14px;
  }
  .rail__brand{
    flex-direction:column;
    align-items:center;
    gap:9px;
    padding-bottom:14px;
    border-bottom:1px solid var(--hair);
  }
  .rail__brand-text{align-items:center;gap:0}
  .rail__name{
    font-size:13px;
    line-height:1.4;
    letter-spacing:.02em;
    text-align:center;
    max-width:74px;
    white-space:normal;
  }
  .rail__tagline{display:none}
  .nav-toggle{display:none}
  .site-nav{
    position:static;
    flex:1 1 auto;
    min-height:0;
    max-height:none;
    gap:0;
    padding:0;
    background:none;
    border:0;
    box-shadow:none;
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:none;
    overflow-y:auto;
    overflow-x:visible;
    scrollbar-width:thin;
  }
  .site-nav::-webkit-scrollbar{width:4px}
  .site-nav::-webkit-scrollbar-thumb{background:rgba(233,240,231,.16);border-radius:2px}
  .site-nav__quick{
    align-self:stretch;
    justify-content:center;
    gap:6px;
    margin:0 0 12px;
    padding:7px 4px;
    font-size:10px;
    letter-spacing:.10em;
  }
  .site-nav__eyebrow{
    margin:0 0 8px;
    padding-bottom:8px;
    border-bottom:1px solid var(--hair-soft);
    font-size:9px;
    letter-spacing:.24em;
    text-align:center;
  }
  .site-nav__list{flex:1 1 auto;gap:0}
  .site-nav__link{
    flex-direction:column;
    align-items:center;
    gap:2px;
    padding:10px 2px;
    border-left:0;
    border-top:1px solid transparent;
    text-align:center;
  }
  .site-nav__link:hover{
    background:rgba(233,240,231,.05);
    border-left-color:transparent;
    border-top-color:var(--hair);
  }
  .site-nav__link[aria-current="page"]{
    background:linear-gradient(180deg, rgba(183,255,42,.14), rgba(183,255,42,0) 88%);
    box-shadow:inset 2px 0 0 var(--lime);
    border-top-color:transparent;
  }
  .site-nav__index{font-size:9px;letter-spacing:.18em;line-height:1.4}
  .site-nav__label{font-size:12px;line-height:1.35;letter-spacing:.02em;white-space:nowrap}
  .site-nav__cta{
    margin-top:12px;
    padding:10px 4px;
    font-size:11px;
    letter-spacing:.06em;
  }
  .rail__progress{
    left:auto;
    right:-1px;
    top:0;
    bottom:0;
    width:2px;
    height:auto;
  }
  .rail__progress::after{
    background:linear-gradient(180deg, var(--lime), var(--lime-deep));
    transform:scaleY(var(--read-progress,0));
    transform-origin:top center;
  }
  .display-num{font-size:clamp(4rem,9vw,10rem)}
}

/* ---------- 9. 页脚 ---------- */
.site-footer{
  position:relative;
  z-index:2;
  margin-top:clamp(64px,10vw,140px);
  background:linear-gradient(180deg,#0B100E 0%,#070A09 72%);
  border-top:1px solid var(--hair);
  color:var(--mist);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(720px 320px at 88% 0%, rgba(183,255,42,.10), transparent 70%),
    repeating-linear-gradient(90deg, rgba(233,240,231,.020) 0 1px, transparent 1px 120px);
}
.footer__top{
  position:relative;
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1.5fr;
  gap:clamp(24px,4vw,56px);
  padding-block:clamp(40px,6vw,76px) clamp(28px,4vw,48px);
}
.footer__brand{display:flex;flex-direction:column;align-items:flex-start}
.footer__mark{
  display:block;
  width:34px;
  height:34px;
  margin-bottom:18px;
  border:1px solid var(--hair-strong);
  border-radius:1px;
  background:
    linear-gradient(135deg, transparent 46%, var(--lime) 46% 54%, transparent 54%),
    radial-gradient(circle at 74% 26%, rgba(183,255,42,.40), transparent 68%),
    linear-gradient(180deg,#0F1A15,#070A09);
}
.footer__wordmark{
  margin:0 0 12px;
  font-family:var(--font-serif);
  font-size:clamp(1.4rem,2.6vw,1.9rem);
  letter-spacing:.05em;
  color:var(--mist);
  line-height:1.3;
}
.footer__wordmark::after{content:".";color:var(--lime)}
.footer__intro{
  max-width:34ch;
  margin:0 0 22px;
  font-size:14px;
  line-height:1.9;
  color:var(--mist-66);
}
.footer__cta{align-self:flex-start;padding:10px 18px;font-size:13px}
.footer__group{display:flex;flex-direction:column;gap:14px}
.footer__group-title{
  margin:0;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:400;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--mute);
}
.footer__links{
  display:flex;
  flex-direction:column;
  gap:10px;
  margin:0;
  padding:0;
  list-style:none;
}
.footer__link{
  display:inline-block;
  width:-moz-fit-content;
  width:fit-content;
  padding-bottom:2px;
  border-bottom:1px solid transparent;
  font-size:14px;
  color:var(--mist-80);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer__link:hover{color:var(--lime);border-bottom-color:rgba(183,255,42,.5)}
.footer__contact{display:flex;flex-direction:column;gap:10px;font-size:13px;color:var(--mist-66)}
.footer__contact-row{display:flex;gap:10px;align-items:flex-start;line-height:1.7}
.footer__contact-label{
  flex:none;
  min-width:34px;
  padding-top:2px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.18em;
  color:var(--mute);
}
.footer__email{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.02em;
  color:var(--mist);
  word-break:break-all;
}
.footer__copy{
  align-self:flex-start;
  padding:6px 12px;
  border:1px solid var(--hair-strong);
  border-radius:var(--radius);
  color:var(--lime);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  cursor:pointer;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.footer__copy:hover{border-color:var(--lime);background:rgba(183,255,42,.08)}
.footer__copy-status{
  min-height:1.2em;
  margin:0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.10em;
  color:var(--amber);
}
.footer__note{
  margin-top:4px;
  padding-left:12px;
  border-left:1px solid var(--hair);
  font-size:12px;
  line-height:1.8;
  color:var(--mute);
}
.footer__legal{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 24px;
  padding-block:20px 30px;
  border-top:1px solid var(--hair);
  font-size:12px;
  color:var(--mute);
}
.footer__legal-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 22px}
.footer__legal-item{
  margin:0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--mute);
}

/* ---------- 10. 显现动效 ---------- */
html.js-reveal [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .70s var(--ease),transform .70s var(--ease);
  will-change:opacity,transform;
}
html.js-reveal [data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* ---------- 11. 断点修正 ---------- */
@media (max-width:1023px){
  .footer__top{grid-template-columns:1fr 1fr;row-gap:clamp(28px,5vw,48px)}
  .footer__brand{grid-column:1 / -1}
}
@media (max-width:640px){
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .footer__top{grid-template-columns:1fr}
  .footer__legal{justify-content:flex-start}
  .display-num{letter-spacing:-.03em}
}
@media (max-width:419px){
  .rail__tagline{display:none}
  .site-nav__label{font-size:13px}
}

/* ---------- 12. 减少动态偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  html.js-reveal [data-reveal]{
    opacity:1;
    transform:none;
  }
  .site-nav{transition:none}
}