/* ==========================================================================
   银河3868 · 全站共享样式  /assets/site.css
   深空靛蓝底色 / 银河银阅读 / 星云紫识别 / 青绿行动 / 红橙点色标记
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  color-scheme: dark;

  --gx-ink:#0B1030;
  --gx-ink-2:#141A44;
  --gx-ink-3:#1B2258;
  --gx-silver:#E8EAF4;
  --gx-silver-dim:rgba(232,234,244,.70);
  --gx-silver-faint:rgba(232,234,244,.14);
  --gx-nebula:#7B5CFF;
  --gx-nebula-soft:#B79CFF;
  --gx-mint:#1FE0A6;
  --gx-cream:#F4E9D6;
  --gx-umber:#211610;
  --gx-flare:#FF5A3C;

  --gx-font-display:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --gx-font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --gx-font-mono:"SFMono-Regular",ui-monospace,"JetBrains Mono",Menlo,Consolas,"Courier New",monospace;

  --gx-shell:1400px;
  --gx-bar-h:64px;
  --gx-edge:clamp(16px,3vw,40px);
  --gx-radius:16px;
  --gx-ease:cubic-bezier(.2,.7,.2,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,pre{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
img,picture,svg,video{display:block;max-width:100%}
table{border-collapse:collapse;width:100%}
hr{border:0}
[hidden]{display:none !important}

/* ---------- 3. 基础排版 ---------- */
html{background:var(--gx-ink)}

body{
  min-height:100vh;
  font-family:var(--gx-font-body);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.012em;
  color:var(--gx-silver);
  background-color:var(--gx-ink);
  background-image:
    radial-gradient(1100px 620px at 84% -6%, rgba(123,92,255,.22), transparent 64%),
    radial-gradient(760px 480px at 2% 4%, rgba(31,224,166,.08), transparent 62%),
    radial-gradient(900px 700px at 46% 112%, rgba(183,156,255,.13), transparent 70%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

strong,b{font-weight:700;color:var(--gx-cream)}

:focus-visible{
  outline:2px solid var(--gx-mint);
  outline-offset:3px;
  border-radius:4px;
}

#main-content{scroll-margin-top:calc(var(--gx-bar-h) + 24px)}

/* ---------- 4. 通用排版组件 ---------- */
.shell{
  width:100%;
  max-width:var(--gx-shell);
  margin-inline:auto;
  padding-inline:var(--gx-edge);
}

.section{padding-block:clamp(48px,7vw,104px)}

.section--band{
  background:linear-gradient(180deg, rgba(20,26,68,.78) 0%, rgba(20,26,68,.28) 100%);
  border-block:1px solid rgba(232,234,244,.08);
}

.kicker{
  display:inline-block;
  font-family:var(--gx-font-mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--gx-mint);
}

.h-display{
  font-family:var(--gx-font-display);
  font-weight:800;
  font-size:clamp(44px,7vw,96px);
  line-height:1.02;
  letter-spacing:.04em;
  color:var(--gx-cream);
}

.h-section{
  font-family:var(--gx-font-display);
  font-weight:800;
  font-size:clamp(28px,3.6vw,40px);
  line-height:1.22;
  letter-spacing:.04em;
  color:var(--gx-cream);
}

.prose{
  max-width:68ch;
  font-size:17px;
  line-height:1.85;
  color:var(--gx-silver-dim);
}
.prose p + p{margin-top:1em}
.prose a{color:var(--gx-mint);border-bottom:1px solid rgba(31,224,166,.4)}
.prose a:hover{border-bottom-color:var(--gx-mint)}

.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--gx-font-mono);
  font-size:11.5px;
  letter-spacing:.12em;
  color:rgba(232,234,244,.5);
}
.crumbs a{transition:color .2s var(--gx-ease)}
.crumbs a:hover{color:var(--gx-mint)}
.crumbs__sep{opacity:.42}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:13px 24px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  letter-spacing:.04em;
  white-space:nowrap;
  transition:transform .24s var(--gx-ease), background .24s var(--gx-ease), border-color .24s var(--gx-ease), color .24s var(--gx-ease), box-shadow .24s var(--gx-ease);
}
.btn--primary{
  background:linear-gradient(135deg, var(--gx-mint) 0%, #12B98A 100%);
  color:#04241A;
  box-shadow:0 16px 34px -18px rgba(31,224,166,.9);
}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 22px 44px -20px rgba(31,224,166,1)}
.btn--ghost{
  border-color:rgba(232,234,244,.28);
  background:rgba(232,234,244,.05);
  color:var(--gx-silver);
}
.btn--ghost:hover{border-color:var(--gx-nebula-soft);background:rgba(123,92,255,.2);color:#fff}

/* ---------- 6. 内容层 / 面板 ---------- */
.panel{
  background:var(--gx-cream);
  color:rgba(33,22,16,.86);
  border-radius:var(--gx-radius);
  padding:clamp(22px,3vw,36px);
}
.panel h2,.panel h3{color:var(--gx-umber)}
.panel .prose{color:rgba(33,22,16,.82)}
.panel .kicker{color:#7A4BFF}

.panel--glass{
  background:rgba(232,234,244,.05);
  border:1px solid var(--gx-silver-faint);
  color:var(--gx-silver);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.panel--glass h2,.panel--glass h3{color:var(--gx-cream)}
.panel--glass .prose{color:var(--gx-silver-dim)}

/* ---------- 7. 网格 ---------- */
.grid{display:grid;gap:clamp(18px,2.4vw,32px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}

/* ---------- 8. 图片容器基础规则 ---------- */
.figure{
  position:relative;
  display:block;
  width:100%;
  overflow:hidden;
  border-radius:var(--gx-radius);
  border:1px solid var(--gx-silver-faint);
  background:linear-gradient(150deg, rgba(123,92,255,.30) 0%, rgba(11,16,48,.92) 72%);
}
.figure::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:radial-gradient(120% 80% at 82% 0%, rgba(31,224,166,.18), transparent 62%);
}
.figure img{width:100%;height:100%;object-fit:cover;display:block}
.figure--16x9{aspect-ratio:16 / 9}
.figure--4x3{aspect-ratio:4 / 3}
.figure--1x1{aspect-ratio:1 / 1}
.figure--wide{aspect-ratio:21 / 9}
.figure__caption{
  margin-top:10px;
  font-family:var(--gx-font-mono);
  font-size:11.5px;
  letter-spacing:.12em;
  color:rgba(232,234,244,.55);
}

/* ---------- 9. 筛选组件 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.filter-btn{
  padding:9px 16px;
  border-radius:999px;
  border:1px solid rgba(232,234,244,.2);
  background:rgba(232,234,244,.04);
  color:var(--gx-silver-dim);
  font-size:14px;
  font-weight:600;
  letter-spacing:.03em;
  transition:color .22s var(--gx-ease), border-color .22s var(--gx-ease), background .22s var(--gx-ease), transform .22s var(--gx-ease);
}
.filter-btn:hover{color:var(--gx-silver);border-color:var(--gx-nebula-soft)}
.filter-btn[aria-pressed="true"]{
  background:linear-gradient(135deg, var(--gx-nebula) 0%, #5B3FE0 100%);
  border-color:transparent;
  color:#fff;
  box-shadow:0 12px 28px -16px rgba(123,92,255,.95);
}
.filter-live{
  margin-left:auto;
  font-family:var(--gx-font-mono);
  font-size:11.5px;
  letter-spacing:.12em;
  color:rgba(232,234,244,.5);
}
[data-tags]{transition:opacity .26s var(--gx-ease)}

/* ---------- 10. 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:400;
  padding:11px 20px;
  border-radius:999px;
  background:var(--gx-mint);
  color:#04241A;
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  transform:translateY(-180%);
  transition:transform .22s var(--gx-ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 11. 顶部命令栏 ---------- */
.site-top{
  position:sticky;
  top:0;
  z-index:120;
  background:linear-gradient(180deg, rgba(11,16,48,.97) 0%, rgba(11,16,48,.87) 100%);
  border-bottom:1px solid var(--gx-silver-faint);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  backdrop-filter:blur(18px) saturate(150%);
  transition:box-shadow .3s var(--gx-ease);
}
html[data-scrolled="true"] .site-top{box-shadow:0 22px 48px -34px rgba(0,0,0,1)}

.cmd-bar__inner{
  width:100%;
  max-width:var(--gx-shell);
  margin-inline:auto;
  padding-inline:var(--gx-edge);
  min-height:var(--gx-bar-h);
  display:flex;
  align-items:center;
  gap:clamp(10px,1.8vw,28px);
}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:11px;
  flex:0 0 auto;
  padding:6px 4px;
  border-radius:12px;
}
.brand__mark{
  position:relative;
  width:28px;
  height:28px;
  flex:0 0 auto;
  display:grid;
  grid-template-columns:repeat(2,1fr);
  grid-template-rows:repeat(2,1fr);
  gap:2px;
  padding:4px;
  border:1px solid rgba(232,234,244,.28);
  border-radius:50%;
}
.brand__mark i{border-radius:50%;background:rgba(232,234,244,.18)}
.brand__mark i:nth-child(1){background:var(--gx-mint);box-shadow:0 0 9px var(--gx-mint)}
.brand__mark i:nth-child(3){background:var(--gx-nebula-soft)}
.brand__text{display:flex;flex-direction:column;justify-content:center}
.brand__name{
  display:block;
  font-family:var(--gx-font-display);
  font-weight:800;
  font-size:17px;
  line-height:1.1;
  letter-spacing:.07em;
  color:var(--gx-cream);
}
.brand__sub{
  display:block;
  margin-top:2px;
  font-family:var(--gx-font-mono);
  font-size:9.5px;
  line-height:1.2;
  letter-spacing:.18em;
  color:rgba(232,234,244,.48);
}

/* 索引式导航 */
.cmd-nav{margin-left:auto}
.cmd-nav__list{display:flex;align-items:center;gap:clamp(1px,.7vw,7px)}
.cmd-nav__link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:9px 12px;
  border:1px solid transparent;
  border-radius:10px;
  font-size:14.5px;
  font-weight:600;
  letter-spacing:.03em;
  color:var(--gx-silver-dim);
  transition:color .2s var(--gx-ease), background .2s var(--gx-ease), border-color .2s var(--gx-ease);
}
.cmd-nav__idx{
  font-family:var(--gx-font-mono);
  font-size:10px;
  letter-spacing:.08em;
  color:rgba(232,234,244,.34);
  transition:color .2s var(--gx-ease);
}
.cmd-nav__label{display:inline}
.cmd-nav__link::before{display:none}
.cmd-nav__link:hover{color:var(--gx-silver);background:rgba(232,234,244,.06)}
.cmd-nav__link[aria-current="page"]{
  color:#fff;
  background:rgba(123,92,255,.18);
  border-color:rgba(183,156,255,.34);
}
.cmd-nav__link[aria-current="page"] .cmd-nav__idx{color:var(--gx-mint)}
.cmd-nav__link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:3px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg, var(--gx-mint), var(--gx-nebula-soft));
  box-shadow:0 0 10px rgba(31,224,166,.75);
}
.cmd-nav__cta{
  display:none;
  align-items:center;
  justify-content:center;
  gap:8px;
  margin-top:auto;
  padding:14px 18px;
  border-radius:999px;
  border:1px solid rgba(31,224,166,.5);
  background:linear-gradient(135deg, rgba(31,224,166,.2), rgba(123,92,255,.2));
  color:var(--gx-mint);
  font-weight:700;
  letter-spacing:.04em;
}

/* 快捷入口 */
.quick-cta{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 17px;
  border-radius:999px;
  border:1px solid rgba(31,224,166,.5);
  background:linear-gradient(135deg, rgba(31,224,166,.16), rgba(123,92,255,.16));
  color:var(--gx-mint);
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  white-space:nowrap;
  transition:background .22s var(--gx-ease), border-color .22s var(--gx-ease), color .22s var(--gx-ease);
}
.quick-cta::before{
  content:"";
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--gx-mint);
  box-shadow:0 0 10px var(--gx-mint);
  animation:gx-pulse 6s ease-in-out infinite;
}
.quick-cta:hover{background:rgba(31,224,166,.26);border-color:var(--gx-mint);color:#CFFCEC}

@keyframes gx-pulse{
  0%,100%{opacity:.55}
  50%{opacity:.92}
}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  position:relative;
  flex:0 0 auto;
  margin-left:auto;
  width:44px;
  height:40px;
  border:1px solid rgba(232,234,244,.24);
  border-radius:11px;
  background:rgba(232,234,244,.04);
  transition:border-color .22s var(--gx-ease), background .22s var(--gx-ease);
}
.nav-toggle:hover{border-color:var(--gx-mint);background:rgba(31,224,166,.12)}
.nav-toggle__bar{
  position:absolute;
  left:12px;
  right:12px;
  height:2px;
  border-radius:2px;
  background:var(--gx-silver);
  transition:transform .26s var(--gx-ease), opacity .2s ease, top .26s var(--gx-ease);
}
.nav-toggle__bar:nth-child(1){top:13px}
.nav-toggle__bar:nth-child(2){top:19px}
.nav-toggle__bar:nth-child(3){top:25px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1){top:19px;transform: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){top:19px;transform:rotate(-45deg)}

/* 本月生效日期条 */
.release-bar{
  max-height:44px;
  overflow:hidden;
  opacity:1;
  border-top:1px solid rgba(232,234,244,.08);
  background:linear-gradient(90deg, rgba(255,90,60,.18) 0%, rgba(20,26,68,.55) 44%, rgba(20,26,68,.55) 100%);
  transition:max-height .3s var(--gx-ease), opacity .22s ease, border-color .22s ease;
}
.site-top[data-collapsed="true"] .release-bar{
  max-height:0;
  opacity:0;
  border-top-color:transparent;
}
.release-bar__inner{
  width:100%;
  max-width:var(--gx-shell);
  margin-inline:auto;
  padding:7px var(--gx-edge);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-family:var(--gx-font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:rgba(232,234,244,.66);
}
.release-bar__tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  border-radius:999px;
  border:1px solid rgba(255,90,60,.5);
  background:rgba(255,90,60,.18);
  color:#FFB9A8;
  font-size:10.5px;
  letter-spacing:.18em;
}
.release-bar__tag::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--gx-flare);
  box-shadow:0 0 9px var(--gx-flare);
}
.release-bar__ver b{color:var(--gx-cream);font-weight:600}
.release-bar__sep{color:rgba(232,234,244,.24)}
.release-bar__meta span{color:var(--gx-cream)}
.release-bar__link{
  color:var(--gx-mint);
  border-bottom:1px solid rgba(31,224,166,.42);
  transition:border-color .2s var(--gx-ease), color .2s var(--gx-ease);
}
.release-bar__link:hover{border-bottom-color:var(--gx-mint);color:#CFFCEC}

/* ---------- 12. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(64px,8vw,128px);
  background:linear-gradient(180deg, rgba(20,26,68,.9) 0%, rgba(8,12,34,1) 100%);
  border-top:1px solid var(--gx-silver-faint);
  color:var(--gx-silver-dim);
  font-size:15px;
  line-height:1.8;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  right:0;
  height:2px;
  opacity:.78;
  background:linear-gradient(90deg, transparent 0%, var(--gx-nebula) 22%, var(--gx-mint) 52%, var(--gx-nebula-soft) 78%, transparent 100%);
}
.site-footer__grid{
  width:100%;
  max-width:var(--gx-shell);
  margin-inline:auto;
  padding:clamp(44px,5.5vw,80px) var(--gx-edge) clamp(30px,4vw,52px);
  display:grid;
  grid-template-columns:1.5fr .9fr .9fr 1.8fr .9fr;
  gap:clamp(22px,3vw,46px);
}

.foot-brand{display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.foot-brand__mark{
  position:relative;
  width:36px;
  height:36px;
  display:grid;
  place-items:center;
  border:1px solid rgba(232,234,244,.3);
  border-radius:50%;
}
.foot-brand__mark::before{
  content:"";
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--gx-mint);
  box-shadow:0 0 12px var(--gx-mint);
}
.foot-brand__mark::after{
  content:"";
  position:absolute;
  inset:5px;
  border:1px dashed rgba(183,156,255,.5);
  border-radius:50%;
  animation:gx-orbit 26s linear infinite;
}
@keyframes gx-orbit{to{transform:rotate(360deg)}}
.foot-brand__name{
  font-family:var(--gx-font-display);
  font-weight:800;
  font-size:20px;
  letter-spacing:.09em;
  color:var(--gx-cream);
}
.foot-brand__note{font-size:13.5px;color:rgba(232,234,244,.6);max-width:28ch}
.foot-brand__domain{
  font-family:var(--gx-font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--gx-mint);
}

.foot-col{display:flex;flex-direction:column;gap:14px}
.foot-col__title{
  font-family:var(--gx-font-mono);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--gx-nebula-soft);
}
.foot-col__list{display:flex;flex-direction:column;gap:9px}
.foot-col__list a{
  display:inline-block;
  color:rgba(232,234,244,.68);
  transition:color .2s var(--gx-ease), transform .2s var(--gx-ease);
}
.foot-col__list a:hover{color:var(--gx-mint);transform:translateX(3px)}

.foot-col--contact .foot-col__list li{display:flex;flex-direction:column;gap:2px}
.foot-col__k{
  font-family:var(--gx-font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:rgba(232,234,244,.42);
}
.foot-col__v{color:var(--gx-silver);font-size:14.5px;word-break:break-word}

.site-footer__base{
  width:100%;
  max-width:var(--gx-shell);
  margin-inline:auto;
  padding:18px var(--gx-edge) 30px;
  border-top:1px solid rgba(232,234,244,.08);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 26px;
  font-family:var(--gx-font-mono);
  font-size:11.5px;
  letter-spacing:.12em;
  color:rgba(232,234,244,.5);
}
.foot-icp{color:rgba(232,234,244,.62)}
.foot-copy{color:rgba(232,234,244,.44)}

/* ---------- 13. 滚动显现协议 ---------- */
html[data-reveal="on"] [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .32s cubic-bezier(.2,.7,.2,1), transform .32s cubic-bezier(.2,.7,.2,1);
}
html[data-reveal="on"] [data-reveal].is-in{opacity:1;transform:translateY(0)}

/* ---------- 14. 响应式 ---------- */
@media (max-width:1180px){
  .site-footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-brand{grid-column:1 / -1}
}

@media (max-width:1080px){
  .nav-toggle{display:block}
  .quick-cta{display:none}

  .cmd-nav{
    position:fixed;
    top:var(--gx-bar-h);
    right:0;
    bottom:0;
    z-index:118;
    width:min(360px,88vw);
    margin:0;
    padding:26px 20px 44px;
    display:flex;
    flex-direction:column;
    gap:22px;
    background:linear-gradient(180deg, #131A46 0%, #0A0F2C 100%);
    border-left:1px solid var(--gx-silver-faint);
    box-shadow:-40px 0 80px -50px #000;
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translate3d(102%,0,0);
    transition:transform .34s var(--gx-ease), opacity .28s ease, visibility .34s linear;
  }
  .cmd-nav[data-open="true"]{
    opacity:1;
    visibility:visible;
    transform:translate3d(0,0,0);
  }
  .cmd-nav__cta{display:flex}
  .cmd-nav__list{flex-direction:column;align-items:stretch;gap:4px}
  .cmd-nav__link{padding:14px;font-size:16px;border-radius:12px}
  .cmd-nav__idx{font-size:11px}
  .cmd-nav__link[aria-current="page"]::after{display:none}
  .cmd-nav__link[aria-current="page"]::before{
    display:block;
    content:"";
    position:absolute;
    left:0;
    top:50%;
    width:3px;
    height:20px;
    margin-top:-10px;
    border-radius:3px;
    background:var(--gx-mint);
    box-shadow:0 0 12px var(--gx-mint);
  }

  html[data-nav-open="true"] .release-bar{
    max-height:0;
    opacity:0;
    border-top-color:transparent;
  }
}

@media (max-width:820px){
  body{font-size:16.5px}
  .cmd-bar__inner{gap:10px}
  .brand__name{font-size:16px}
  .release-bar__inner{font-size:11px;gap:8px}
}

@media (max-width:600px){
  :root{--gx-bar-h:60px}
  .site-footer__grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .foot-brand{grid-column:auto}
  .site-footer__base{flex-direction:column;align-items:flex-start;gap:6px}
  .release-bar__sep{display:none}
}

@media (max-width:460px){
  .brand__sub{display:none}
  .brand__name{font-size:15px}
  .brand__mark{width:24px;height:24px;padding:3px}
}

/* ---------- 15. 动效降级 ---------- */
@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[data-reveal="on"] [data-reveal]{
    opacity:1 !important;
    transform:none !important;
  }
}