/* ============================================================
   2278 游戏 · 安装控制台 — 共享样式 /assets/site.css
   结构：reset → 变量 → 中文排版 → 页头 → 版本轨道 → 页脚
        → 通用组件（面板/按钮/标签/面包屑/网格/图片容器）
   ============================================================ */

*,*::before,*::after{box-sizing:border-box}

:root{
  --ink:#071426;
  --ink-2:#0C2138;
  --paper:#F4EBDD;
  --paper-2:#FBF7EF;
  --cyan:#43E6D4;
  --amber:#FFB15C;
  --red:#FF6B5E;
  --slate:#8299AE;
  --brown:#211A17;
  --line:#28445D;
  --rail-w:280px;
  --shell:1200px;
  --radius:20px;
  --font-head:"Helvetica Neue","Arial Narrow","Noto Sans SC","PingFang SC",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --font-serif:"Noto Serif SC","Songti SC",Georgia,serif;
  --ease:cubic-bezier(.2,.7,.3,1);
}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}

body{
  margin:0;
  min-height:100vh;
  background:
    radial-gradient(130% 70% at 88% -12%,rgba(12,33,56,.95) 0%,rgba(7,20,38,0) 62%),
    radial-gradient(90% 60% at 0% 100%,rgba(40,68,93,.35) 0%,rgba(7,20,38,0) 70%),
    var(--ink);
  color:var(--paper-2);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

#main-content{display:block;scroll-margin-top:110px}

h1,h2,h3,h4{
  font-family:var(--font-head);
  font-weight:800;
  line-height:1.22;
  letter-spacing:-.01em;
  color:var(--paper-2);
  margin:0 0 .6em;
}
h1{font-size:clamp(30px,4vw,48px)}
h2{font-size:clamp(24px,2.6vw,34px)}
h3{font-size:clamp(18px,1.8vw,22px)}
h4{font-size:17px}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
a{color:var(--cyan);text-decoration:none}
a:hover{color:var(--amber)}
img{max-width:100%;height:auto}
ul,ol{padding-left:1.15em}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
.panel :focus-visible{outline-color:var(--ink-2)}

.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  transform:translateY(-180%);
  padding:10px 18px;border-radius:999px;
  background:var(--cyan);color:#04202a;
  font-weight:700;font-size:14px;letter-spacing:.04em;
  box-shadow:0 16px 34px -18px #000;
  transition:transform .22s var(--ease);
}
.skip-link:focus{transform:translateY(0);color:#04202a}

/* ---------- 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  padding:12px clamp(12px,2.2vw,24px) 0;
  pointer-events:none;
}

.scroll-meter{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:90;
  background:rgba(40,68,93,.35);
  pointer-events:none;
}
.scroll-meter__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--cyan),var(--amber));
  box-shadow:0 0 14px rgba(67,230,212,.55);
}

.nav-capsule{
  position:relative;
  max-width:calc(var(--shell) + 80px);
  margin:0 auto;
  display:flex;align-items:center;gap:clamp(10px,1.4vw,20px);
  padding:9px 12px 9px 16px;
  border-radius:999px;
  background:linear-gradient(115deg,rgba(12,33,56,.94),rgba(7,20,38,.88));
  border:1px solid rgba(40,68,93,.95);
  box-shadow:0 22px 46px -30px #000,inset 0 1px 0 rgba(67,230,212,.14);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  transition:padding .3s var(--ease),box-shadow .3s var(--ease);
}
[data-scrolled] .nav-capsule{
  padding-top:6px;padding-bottom:6px;
  box-shadow:0 26px 52px -26px #000,inset 0 1px 0 rgba(67,230,212,.24);
}

.brand{
  display:flex;align-items:center;gap:12px;
  flex:0 0 auto;text-decoration:none;color:var(--paper-2);
}
.brand__mark{
  font-family:var(--font-mono);font-weight:700;font-size:12.5px;letter-spacing:.1em;
  padding:7px 9px;border-radius:10px;
  background:linear-gradient(135deg,var(--cyan),#2ec7b8);
  color:#04202a;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.28);
}
.brand__text{display:flex;flex-direction:column;line-height:1.24}
.brand__lockup{font-family:var(--font-head);font-weight:800;font-size:15px;letter-spacing:.01em}
.brand__subline{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;
  color:var(--slate);text-transform:uppercase;
  transition:opacity .25s var(--ease),transform .25s var(--ease);
}
[data-scrolled] .brand__subline{opacity:0;transform:translateY(-4px)}

.nav-toggle{
  display:none;align-items:center;gap:8px;
  margin-left:auto;padding:8px 12px;border-radius:999px;
  border:1px solid var(--line);background:rgba(7,20,38,.75);
  color:var(--paper-2);font-family:inherit;font-size:12.5px;
  letter-spacing:.12em;cursor:pointer;
}
.nav-toggle__bars{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:18px}
.nav-toggle__bar{
  display:block;height:2px;width:100%;border-radius:2px;background:var(--cyan);
  transition:transform .25s var(--ease),opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-toggle__text{white-space:nowrap}

.site-nav{display:flex;align-items:center;gap:12px;margin-left:auto;min-width:0}
.site-nav__list{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0}
.site-nav__item{position:relative}
.site-nav__link{
  display:inline-block;padding:8px 11px;border-radius:999px;
  font-size:13.5px;line-height:1.4;white-space:nowrap;
  color:rgba(251,247,239,.76);
  transition:color .2s,background .2s;
}
.site-nav__link:hover,.site-nav__link:focus-visible{color:var(--cyan);background:rgba(67,230,212,.1)}
.site-nav__link[aria-current="page"]{
  color:#04202a;background:var(--cyan);font-weight:700;
  box-shadow:0 10px 22px -16px var(--cyan);
}

.nav-quick{display:flex;align-items:center;gap:8px;padding-left:12px;border-left:1px solid var(--line)}
.nav-quick__chip{
  display:inline-flex;align-items:center;white-space:nowrap;
  padding:7px 12px;border-radius:999px;
  border:1px solid var(--line);background:rgba(7,20,38,.4);
  font-size:12px;letter-spacing:.06em;color:var(--paper-2);
  transition:color .2s,border-color .2s,background .2s;
}
.nav-quick__chip:hover{color:var(--cyan);border-color:rgba(67,230,212,.6);background:rgba(67,230,212,.08)}
.nav-quick__chip--alert{color:var(--amber);border-color:rgba(255,177,92,.55);background:rgba(255,177,92,.08)}
.nav-quick__chip--alert:hover{color:var(--amber);border-color:var(--amber);background:rgba(255,177,92,.18)}
.nav-cta{
  display:inline-flex;align-items:center;white-space:nowrap;
  padding:9px 16px;border-radius:999px;
  background:var(--cyan);color:#04202a;
  font-size:13.5px;font-weight:700;letter-spacing:.04em;
  box-shadow:0 0 0 1px rgba(67,230,212,.45),0 12px 26px -14px rgba(67,230,212,.9);
  transition:transform .2s var(--ease),background .2s,color .2s;
}
.nav-cta:hover{background:var(--amber);color:#2a1704;transform:translateY(-1px)}

@media (min-width:1080px) and (max-width:1399px){
  .nav-quick__chip{display:none}
}
@media (min-width:1080px) and (max-width:1279px){
  .brand__subline{display:none}
}

/* ---------- 版本轨道（移动端：横向状态条） ---------- */
.version-rail{
  position:relative;
  max-width:calc(var(--shell) + 80px);
  margin:8px auto 0;
  padding:7px 12px;
  border-radius:999px;
  background:rgba(10,27,48,.94);
  border:1px solid rgba(40,68,93,.9);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  overflow-x:auto;overflow-y:hidden;
  scrollbar-width:none;
  pointer-events:auto;
}
.version-rail::-webkit-scrollbar{display:none}
.rail__inner{display:flex;flex-direction:row;align-items:center;gap:10px;min-width:max-content}
.rail__label,.rail__meta,.rail__foot{display:none}
.rail__version{
  font-family:var(--font-mono);font-weight:700;font-size:15px;
  line-height:1;letter-spacing:-.02em;color:var(--paper-2);margin:0;
}
.rail__status{
  display:inline-flex;align-items:center;gap:7px;margin:0;
  padding:4px 10px;border-radius:999px;
  border:1px solid rgba(67,230,212,.5);
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;
  color:var(--cyan);white-space:nowrap;
}
.rail__dot{
  width:7px;height:7px;border-radius:50%;background:var(--cyan);
  animation:railPulse 3.4s ease-in-out infinite;
}
@keyframes railPulse{
  0%,100%{box-shadow:0 0 0 0 rgba(67,230,212,.45)}
  50%{box-shadow:0 0 0 7px rgba(67,230,212,0)}
}
.rail__links{display:flex;gap:6px;list-style:none;margin:0;padding:0}
.rail__link{
  display:inline-block;white-space:nowrap;
  padding:5px 10px;border-radius:999px;
  border:1px solid rgba(40,68,93,.9);
  color:var(--paper-2);font-size:12px;
  transition:color .2s,border-color .2s,background .2s,transform .2s;
}
.rail__link:hover{color:var(--cyan);border-color:rgba(67,230,212,.6);background:rgba(67,230,212,.08)}

@media (min-width:1080px){
  body{padding-left:var(--rail-w)}
  .scroll-meter{left:var(--rail-w)}

  .version-rail{
    position:fixed;top:0;left:0;bottom:0;z-index:80;
    width:var(--rail-w);max-width:none;margin:0;
    padding:96px 22px 26px;
    border-radius:0;border:0;border-right:1px solid var(--line);
    background:linear-gradient(180deg,#08182c 0%,#0a1b30 46%,#050f1d 100%);
    overflow-y:auto;overflow-x:hidden;
  }
  .rail__inner{display:flex;flex-direction:column;align-items:stretch;gap:14px;min-width:0;min-height:100%}
  .rail__label{
    display:block;margin:0;
    font-family:var(--font-mono);font-size:10.5px;letter-spacing:.24em;
    text-transform:uppercase;color:var(--slate);
  }
  .rail__version{
    font-size:clamp(38px,3.4vw,52px);line-height:.95;letter-spacing:-.03em;
    color:var(--paper-2);text-shadow:0 0 34px rgba(67,230,212,.18);
  }
  .rail__status{align-self:flex-start;font-size:11px;padding:6px 12px}
  .rail__meta{
    display:grid;margin:0;padding:16px 0 0;gap:9px;
    border-top:1px dashed rgba(40,68,93,.9);
  }
  .rail__meta-row{display:flex;align-items:baseline;justify-content:space-between;gap:10px}
  .rail__meta-row dt{
    margin:0;font-family:var(--font-mono);font-size:10.5px;
    letter-spacing:.2em;text-transform:uppercase;color:var(--slate);
  }
  .rail__meta-row dd{
    margin:0;font-family:var(--font-mono);font-size:12px;
    color:var(--paper-2);text-align:right;
  }
  .rail__links{display:grid;gap:6px}
  .rail__link{
    display:flex;align-items:center;justify-content:space-between;gap:8px;
    padding:10px 12px;border-radius:12px;
    background:rgba(12,33,56,.55);font-size:13px;
  }
  .rail__link::after{
    content:"→";font-family:var(--font-mono);font-size:11px;color:var(--slate);
    transition:color .2s,transform .2s;
  }
  .rail__link:hover{transform:translateX(2px)}
  .rail__link:hover::after{color:var(--cyan)}
  .rail__link[aria-current="page"]{
    color:var(--cyan);border-color:rgba(67,230,212,.55);background:rgba(67,230,212,.08);
  }
  .rail__foot{
    display:block;margin:auto 0 0;padding-top:16px;
    border-top:1px solid rgba(40,68,93,.7);
    font-size:12px;line-height:1.75;color:var(--slate);
  }
}

/* ---------- 移动端下拉导航 ---------- */
@media (max-width:1079px){
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;top:calc(100% + 10px);left:0;right:0;z-index:5;
    display:none;flex-direction:column;align-items:stretch;gap:10px;
    margin:0;padding:14px;border-radius:24px;
    background:linear-gradient(160deg,rgba(12,33,56,.985),rgba(7,20,38,.995));
    border:1px solid var(--line);
    box-shadow:0 34px 66px -30px #000;
  }
  .site-nav[data-open]{display:flex;animation:navIn .22s var(--ease)}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:2px}
  .site-nav__link{display:block;padding:12px 14px;border-radius:14px;font-size:16px}
  .nav-quick{
    flex-wrap:wrap;margin-top:2px;padding:12px 0 0;
    border-left:0;border-top:1px solid var(--line);
  }
  .nav-quick__chip{flex:1 1 auto;justify-content:center;text-align:center;padding:9px 12px;font-size:13px}
  .nav-cta{flex:1 1 100%;justify-content:center;text-align:center;padding:11px 16px}
}
@keyframes navIn{
  from{opacity:0;transform:translateY(-8px)}
  to{opacity:1;transform:none}
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,110px);
  padding:clamp(36px,5vw,64px) clamp(16px,3vw,40px) 24px;
  background:linear-gradient(180deg,#071426 0%,#0A1B30 52%,#050f1d 100%);
  border-top:1px solid var(--line);
  color:rgba(251,247,239,.78);
  font-size:15px;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--cyan),rgba(67,230,212,0) 42%,rgba(255,177,92,0) 58%,var(--amber));
}
.footer__grid{
  max-width:var(--shell);margin:0 auto;
  display:grid;gap:clamp(20px,2.6vw,44px);
  grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,.72fr)) minmax(0,1.15fr);
}
.footer__brand,.footer__col,.footer__contact{min-width:0}
.footer__mark{
  margin:0 0 12px;font-family:var(--font-mono);font-size:10.5px;
  letter-spacing:.32em;text-transform:uppercase;color:var(--cyan);
}
.footer__line{
  margin:0 0 12px;
  font-family:var(--font-head);font-weight:800;
  font-size:clamp(19px,2vw,24px);line-height:1.35;
  letter-spacing:-.01em;color:var(--paper-2);
}
.footer__summary{margin:0 0 18px;max-width:42ch;font-size:14px;line-height:1.85;color:rgba(251,247,239,.72)}
.footer__cta{margin-top:2px}

.footer__col-title{
  margin:0 0 14px;
  font-family:var(--font-mono);font-size:10.5px;font-weight:600;
  letter-spacing:.22em;text-transform:uppercase;color:var(--slate);
}
.footer__links{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.footer__link{
  display:inline-block;padding-bottom:2px;
  font-size:14.5px;color:rgba(251,247,239,.84);
  border-bottom:1px solid transparent;
  transition:color .2s,border-color .2s;
}
.footer__link:hover{color:var(--cyan);border-bottom-color:rgba(67,230,212,.6)}
.footer__link[aria-current="page"]{color:var(--cyan);border-bottom-color:rgba(67,230,212,.45)}

.footer__contact-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer__contact-item{display:grid;gap:2px}
.footer__contact-label{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--slate);
}
.footer__contact-value{
  font-family:var(--font-mono);font-size:13px;letter-spacing:-.01em;
  color:var(--paper-2);word-break:break-word;
}
.footer__note{margin:14px 0 0;font-size:12.5px;line-height:1.8;color:rgba(251,247,239,.55)}

.footer__bottom{
  max-width:var(--shell);margin:clamp(26px,4vw,44px) auto 0;
  padding-top:18px;border-top:1px solid rgba(40,68,93,.8);
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--slate);
}
.footer__legal,.footer__copy{margin:0}
.to-top{
  margin-left:auto;display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:999px;
  border:1px solid var(--line);background:rgba(12,33,56,.75);
  color:var(--paper-2);font-family:inherit;font-size:12px;
  letter-spacing:.12em;cursor:pointer;
  transition:border-color .2s,color .2s,transform .2s var(--ease);
}
.to-top:hover{border-color:rgba(67,230,212,.6);color:var(--cyan);transform:translateY(-2px)}
.to-top[hidden]{display:none}
.to-top__arrow{font-family:var(--font-mono)}

@media (max-width:1100px){
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__brand{grid-column:1 / -1}
}
@media (max-width:640px){
  .footer__grid{grid-template-columns:1fr}
  .footer__bottom{font-size:11px}
  .to-top{margin-left:0}
}

/* ---------- 通用布局与组件 ---------- */
.wrap{width:100%;max-width:var(--shell);margin:0 auto;padding:0 clamp(16px,3vw,32px)}
.section{padding:clamp(30px,4.6vw,62px) 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin:0 0 14px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;
  text-transform:uppercase;color:var(--cyan);
}
.eyebrow::before{content:"";display:inline-block;width:22px;height:1px;background:currentColor}
.mono{font-family:var(--font-mono);letter-spacing:-.01em}
.serif{font-family:var(--font-serif);line-height:1.8}

.panel{
  background:var(--paper);color:var(--brown);
  border-radius:var(--radius);
  padding:clamp(20px,3vw,38px);
  box-shadow:0 34px 70px -48px #000;
}
.panel h2,.panel h3,.panel h4{color:var(--brown)}
.panel a{color:#0C2138}
.panel a:hover{color:#A85B14}
.panel--ink{background:var(--ink-2);color:var(--paper-2);border:1px solid var(--line)}
.panel--ink h2,.panel--ink h3,.panel--ink h4{color:var(--paper-2)}
.panel--ink a{color:var(--cyan)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;border-radius:999px;
  border:1px solid transparent;
  font-family:inherit;font-size:14px;font-weight:700;letter-spacing:.03em;
  text-decoration:none;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s,background .2s,color .2s,border-color .2s;
}
.btn:hover{transform:translateY(-2px)}
.btn--primary{
  background:var(--cyan);color:#04202a;
  box-shadow:0 16px 34px -20px rgba(67,230,212,.95);
}
.btn--primary:hover{background:#5cf0e0;color:#04202a}
.btn--ghost{
  background:rgba(12,33,56,.6);color:var(--paper-2);
  border-color:var(--line);
}
.btn--ghost:hover{border-color:rgba(67,230,212,.65);color:var(--cyan)}
.btn--amber{background:var(--amber);color:#2a1704;box-shadow:0 16px 34px -20px rgba(255,177,92,.9)}
.btn--amber:hover{background:#ffc27f;color:#2a1704}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 10px;border-radius:999px;
  border:1px solid var(--line);background:rgba(12,33,56,.6);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--slate);
}
.tag--live{color:var(--cyan);border-color:rgba(67,230,212,.55);background:rgba(67,230,212,.08)}
.tag--warn{color:var(--amber);border-color:rgba(255,177,92,.5);background:rgba(255,177,92,.08)}
.tag--alert{color:var(--red);border-color:rgba(255,107,94,.5);background:rgba(255,107,94,.08)}
.panel .tag{color:#3d5265;border-color:rgba(33,26,23,.22);background:rgba(255,255,255,.55)}
.panel .tag--live{color:#0d6b63;border-color:rgba(13,107,99,.4);background:rgba(67,230,212,.16)}
.panel .tag--warn{color:#8a4d06;border-color:rgba(138,77,6,.35);background:rgba(255,177,92,.22)}
.panel .tag--alert{color:#a3271c;border-color:rgba(163,39,28,.35);background:rgba(255,107,94,.18)}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  list-style:none;margin:0 0 18px;padding:0;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--slate);
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__item:not(:last-child)::after{content:"/";color:var(--line)}
.breadcrumb__link{color:var(--slate)}
.breadcrumb__link:hover{color:var(--cyan)}
.breadcrumb__current{color:var(--paper-2)}

.grid{display:grid;gap:clamp(14px,2vw,24px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.grid--split{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr)}
@media (max-width:900px){.grid--split{grid-template-columns:1fr}}

.card{
  background:rgba(12,33,56,.72);
  border:1px solid var(--line);
  border-radius:16px;
  padding:clamp(16px,2vw,24px);
  transition:transform .25s var(--ease),border-color .25s;
}
.card:hover{transform:translateY(-3px);border-color:rgba(67,230,212,.5)}

/* 图片容器基础（页面阶段放入 <img> 即可） */
.media{
  position:relative;display:block;overflow:hidden;
  border-radius:16px;border:1px solid var(--line);
  background:linear-gradient(140deg,#0C2138,#071426);
  aspect-ratio:16/10;
}
.media img,.media video{display:block;width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:21/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media__tag{
  position:absolute;top:10px;left:10px;
  padding:4px 9px;border-radius:999px;
  background:rgba(7,20,38,.84);border:1px solid rgba(67,230,212,.45);
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--cyan);
}
.media__caption{margin:8px 0 0;font-size:12.5px;line-height:1.6;color:var(--slate)}

/* 进场显现（由 site.js 开启 html[data-motion="on"]） */
html[data-motion="on"] [data-reveal]{opacity:0;transform:translateY(16px)}
html[data-motion="on"] [data-reveal].is-in{
  opacity:1;transform:none;
  transition:opacity .65s var(--ease),transform .65s var(--ease);
}

/* 降低动效 */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .rail__dot{animation:none}
  html[data-motion="on"] [data-reveal]{opacity:1;transform:none}
  .btn:hover,.card:hover,.rail__link:hover,.to-top:hover{transform:none}
}

@media (max-width:480px){
  body{font-size:16px}
  .brand__lockup{font-size:14px}
  .nav-capsule{padding:8px 10px 8px 12px}
}