/* ==========================================================================
   大快发三 · 共享样式表 /assets/site.css
   山城赛博 · 数字台账：深蓝底 + 暖橙关键色 + 霓虹紫/信号黄状态色
   ========================================================================== */

:root{
  --c-ink:#071530;
  --c-ink-2:#0E2A4F;
  --c-panel:#1C2433;
  --c-mist:#7E93AE;
  --c-white:#F2F6FB;
  --c-orange:#FF7A2F;
  --c-orange-deep:#B8451A;
  --c-purple:#A45CFF;
  --c-yellow:#FFD24A;
  --c-cyan:#3FC1C9;

  --line:rgba(126,147,174,.26);
  --line-strong:rgba(126,147,174,.52);
  --shell:1240px;
  --gutter:clamp(16px,4vw,44px);
  --cut:22px;

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

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  color:var(--c-white);
  font-family:var(--font-body);
  font-size:16.5px;
  font-weight:500;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  background-color:var(--c-ink);
  background-image:
    radial-gradient(680px 420px at 12% -8%, rgba(164,92,255,.20), transparent 70%),
    radial-gradient(760px 460px at 88% 0%, rgba(255,122,47,.16), transparent 72%);
  background-repeat:no-repeat;
}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
table{width:100%;border-collapse:collapse}
:focus-visible{outline:2px solid var(--c-yellow);outline-offset:3px}
::selection{background:var(--c-orange);color:#0a1220}

/* ---------- 容器与节奏 ---------- */
.container{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(44px,6vw,88px)}
.section--tight{padding-block:clamp(26px,4vw,52px)}

/* ---------- 排版 ---------- */
.display{font-family:var(--font-display);font-weight:900;line-height:1.05;letter-spacing:-.02em;color:var(--c-white)}
.display--xl{font-size:clamp(40px,9vw,96px)}
.display--l{font-size:clamp(32px,6vw,64px)}
.display--m{font-size:clamp(24px,4vw,40px)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:12px;font-weight:800;letter-spacing:.16em;color:var(--c-purple)}
.eyebrow::before{content:"";width:22px;height:2px;background:currentColor;flex:0 0 auto}

.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:12px 26px;padding-bottom:16px;margin-bottom:clamp(22px,3.4vw,40px);border-bottom:1px solid var(--line)}
.section-head__title{font-family:var(--font-display);font-weight:900;font-size:clamp(23px,3.2vw,36px);line-height:1.1;letter-spacing:-.02em}
.section-head__note{margin-left:auto;max-width:46ch;font-size:14.5px;line-height:1.7;color:var(--c-mist)}

.prose{max-width:64ch;color:#d8e2f0;font-size:16.5px;line-height:1.8}
.prose p + p{margin-top:1em}
.prose h2{font-family:var(--font-display);font-weight:900;font-size:clamp(20px,2.6vw,26px);line-height:1.2;margin-top:1.6em}
.prose li{position:relative;padding-left:20px}
.prose li + li{margin-top:.4em}
.prose li::before{content:"";position:absolute;left:0;top:.85em;width:10px;height:1px;background:var(--c-orange)}

/* ---------- 横向主题带 ---------- */
.band{
  position:relative;
  overflow:hidden;
  border-block:1px solid var(--line);
  background:linear-gradient(100deg,var(--c-ink-2) 0%,#11325e 46%,var(--c-panel) 100%);
}
.band::after{
  content:"";
  position:absolute;
  inset:-20%;
  background:repeating-linear-gradient(115deg, rgba(164,92,255,.14) 0 1px, transparent 1px 26px);
  animation:band-drift 22s linear infinite;
  pointer-events:none;
}
@keyframes band-drift{
  from{transform:translate3d(0,0,0)}
  to{transform:translate3d(-26px,-13px,0)}
}
.band__inner{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;gap:14px clamp(18px,3vw,40px);padding-block:clamp(20px,3vw,34px)}
.band__title{font-family:var(--font-display);font-weight:900;font-size:clamp(20px,2.8vw,32px);line-height:1.1;letter-spacing:-.01em}
.band__meta{margin-left:auto;font-family:var(--font-mono);font-size:12.5px;letter-spacing:.16em;color:var(--c-yellow)}

/* ---------- 切角面板 ---------- */
.panel{
  position:relative;
  padding:clamp(18px,2.6vw,30px);
  border:1px solid var(--line);
  background:linear-gradient(160deg, rgba(28,36,51,.96), rgba(14,42,79,.9));
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));
}
.panel--flat{background:var(--c-panel)}
.panel--accent{border-color:rgba(255,122,47,.55);background:linear-gradient(160deg, rgba(184,69,26,.22), rgba(28,36,51,.95))}
.panel__num{position:absolute;top:14px;right:18px;font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;color:var(--c-mist)}

/* ---------- 栅格 ---------- */
.grid{display:grid;gap:clamp(14px,2vw,24px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--5-7{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}

/* ---------- 图片容器（仅占位规则，页面阶段插入 <img>） ---------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16/9;
  background:linear-gradient(140deg,var(--c-ink-2),var(--c-panel));
  clip-path:polygon(0 0,100% 0,100% calc(100% - 26px),calc(100% - 26px) 100%,0 100%);
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--square{aspect-ratio:1/1}
.media-frame--ghost{
  background-image:
    repeating-linear-gradient(135deg, rgba(126,147,174,.16) 0 1px, transparent 1px 14px),
    linear-gradient(140deg,var(--c-ink-2),var(--c-panel));
}
.media-frame > img{width:100%;height:100%;object-fit:cover;filter:saturate(.96) contrast(1.06)}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(180deg, rgba(7,21,48,.12), rgba(7,21,48,.78)),
    repeating-linear-gradient(0deg, rgba(242,246,251,.05) 0 1px, transparent 1px 4px);
  pointer-events:none;
}
.media-frame__num{position:absolute;left:16px;bottom:12px;z-index:2;font-family:var(--font-mono);font-size:12px;letter-spacing:.22em;color:var(--c-yellow)}
.media-frame__tag{position:absolute;top:14px;right:14px;z-index:2}

/* ---------- 标签 ---------- */
.tag{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border:1px solid currentColor;font-size:12px;font-weight:800;letter-spacing:.12em;color:var(--c-mist)}
.tag--orange{color:var(--c-orange)}
.tag--purple{color:var(--c-purple)}
.tag--yellow{color:var(--c-yellow)}
.tag--cyan{color:var(--c-cyan)}
.tag--mist{color:var(--c-mist)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  font-size:14.5px;
  font-weight:800;
  letter-spacing:.02em;
  color:var(--c-white);
  border:1px solid transparent;
  cursor:pointer;
  clip-path:polygon(9px 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%,0 9px);
  transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn:focus-visible{outline:none;box-shadow:inset 0 0 0 2px var(--c-yellow)}
.btn--primary{background:linear-gradient(135deg,var(--c-orange),var(--c-orange-deep));color:#0a1220;box-shadow:0 12px 30px -16px rgba(255,122,47,.95)}
.btn--primary:hover{transform:translateY(-2px)}
.btn--ghost{border-color:var(--line-strong);color:var(--c-white);background:rgba(28,36,51,.5)}
.btn--ghost:hover{border-color:var(--c-orange);color:var(--c-orange)}
.btn--sm{padding:8px 14px;font-size:13.5px}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding-top:18px;font-size:13px;color:var(--c-mist)}
.breadcrumb a{color:var(--c-mist);border-bottom:1px solid transparent;transition:color .18s ease,border-color .18s ease}
.breadcrumb a:hover{color:var(--c-white);border-bottom-color:var(--c-orange)}
.breadcrumb__sep{color:rgba(126,147,174,.62)}
.breadcrumb [aria-current="page"]{color:var(--c-white);font-weight:700}

/* ---------- 数据卡 ---------- */
.stat{display:flex;flex-direction:column;gap:4px;padding:16px 18px;border-left:3px solid var(--c-orange);background:rgba(28,36,51,.82)}
.stat__value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:clamp(22px,3vw,32px);font-weight:700;line-height:1.1;color:var(--c-white)}
.stat__label{font-size:12.5px;letter-spacing:.1em;color:var(--c-mist)}
.stat--purple{border-left-color:var(--c-purple)}
.stat--cyan{border-left-color:var(--c-cyan)}
.stat--yellow{border-left-color:var(--c-yellow)}

/* ---------- 时间轴 / 更新日志 ---------- */
.track{position:relative;padding-left:26px}
.track::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:1px;background:linear-gradient(180deg,var(--c-orange),rgba(164,92,255,.6),transparent)}
.track__item{position:relative;padding-bottom:22px}
.track__item::before{content:"";position:absolute;left:-24px;top:.62em;width:9px;height:9px;background:var(--c-ink);border:2px solid var(--c-orange);transform:rotate(45deg)}
.track__label{display:block;font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--c-mist)}

/* ---------- 筛选与输入 ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  padding:8px 14px;
  font-size:13.5px;
  font-weight:700;
  color:var(--c-mist);
  background:rgba(28,36,51,.75);
  border:1px solid var(--line);
  cursor:pointer;
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.chip:hover{color:var(--c-white);border-color:var(--line-strong)}
.chip.is-active,.chip[aria-pressed="true"]{color:#0a1220;border-color:transparent;background:linear-gradient(135deg,var(--c-orange),var(--c-orange-deep))}
.filter-input{
  width:100%;
  max-width:340px;
  padding:11px 14px;
  color:var(--c-white);
  font-family:var(--font-mono);
  font-size:14.5px;
  letter-spacing:.06em;
  background:rgba(28,36,51,.85);
  border:1px solid var(--line);
  border-left:3px solid var(--c-purple);
}
.filter-input::placeholder{color:var(--c-mist);letter-spacing:.04em}
.filter-input:focus-visible{border-color:var(--c-yellow);border-left-color:var(--c-yellow)}

/* ==========================================================================
   页头：双层信息导航
   ========================================================================== */
.skip-link{
  position:absolute;
  left:50%;
  top:-64px;
  z-index:200;
  transform:translateX(-50%);
  padding:10px 20px;
  font-size:14px;
  font-weight:800;
  color:#0a1220;
  background:var(--c-yellow);
  transition:top .2s ease;
}
.skip-link:focus{top:8px}

.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:linear-gradient(180deg, rgba(7,21,48,.97) 0%, rgba(14,42,79,.93) 100%);
  border-bottom:1px solid var(--line);
  box-shadow:0 20px 44px -34px rgba(0,0,0,.98);
}
@supports ((backdrop-filter:blur(10px)) or (-webkit-backdrop-filter:blur(10px))){
  .site-header{-webkit-backdrop-filter:blur(12px) saturate(140%);backdrop-filter:blur(12px) saturate(140%)}
}
.hdr-progress{
  position:absolute;
  left:0;
  bottom:-1px;
  width:100%;
  height:2px;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--c-orange),var(--c-yellow) 46%,var(--c-cyan));
  pointer-events:none;
}

/* 上层：品牌说明 + 数据快照 + 联系入口 */
.hdr-upper{border-bottom:1px dashed var(--line)}
.hdr-upper__inner{display:flex;align-items:center;gap:clamp(12px,2vw,26px);min-height:62px;padding-block:10px}

.brand{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto}
.brand__glyph{
  display:grid;
  place-items:center;
  width:38px;
  height:38px;
  font-family:var(--font-display);
  font-weight:900;
  font-size:18px;
  line-height:1;
  color:#0a1220;
  background:linear-gradient(135deg,var(--c-orange),var(--c-yellow));
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
}
.brand:hover .brand__glyph{filter:brightness(1.08)}
.brand__text{display:flex;flex-direction:column;line-height:1.18}
.brand__name{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-display);font-weight:900;font-size:17px;letter-spacing:-.01em}
.brand__dot{display:inline-block;width:6px;height:6px;background:var(--c-yellow);transform:rotate(45deg)}
.brand__sub{font-size:11.5px;font-weight:600;letter-spacing:.14em;color:var(--c-mist)}

.hdr-snapshot{display:flex;align-items:stretch;margin-left:auto;border-left:1px solid var(--line)}
.hdr-snapshot__item{display:flex;flex-direction:column;justify-content:center;gap:1px;padding:2px 16px;border-right:1px solid var(--line)}
.hdr-snapshot__label{font-size:10.5px;font-weight:800;letter-spacing:.16em;color:var(--c-mist)}
.hdr-snapshot__value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:12.5px;font-weight:700;letter-spacing:.02em;color:var(--c-white)}
.hdr-snapshot__value--hot{color:var(--c-yellow)}

.hdr-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;margin-left:clamp(10px,2vw,24px)}
.chip-btn{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:7px 12px;
  border:1px solid var(--line);
  background:rgba(28,36,51,.72);
  cursor:pointer;
  transition:border-color .2s ease,color .2s ease;
}
.chip-btn:hover{border-color:var(--c-orange)}
.chip-btn__label{font-size:10.5px;font-weight:800;letter-spacing:.14em;color:var(--c-mist)}
.chip-btn__value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:13px;font-weight:700}
.chip-btn__flag{padding-left:9px;border-left:1px solid var(--line);font-size:10.5px;font-weight:800;letter-spacing:.12em;color:var(--c-purple)}
.chip-btn[data-copied]{border-color:var(--c-yellow)}
.chip-btn[data-copied] .chip-btn__flag{color:var(--c-yellow)}

/* 下层：栏目导轨 */
.hdr-lower{background:linear-gradient(90deg, rgba(28,36,51,.88), rgba(14,42,79,.62))}
.hdr-lower__inner{display:flex;align-items:stretch;gap:12px}
.hdr-nav{flex:1 1 auto;min-width:0}
.hdr-nav__list{display:flex;align-items:stretch;gap:4px;overflow-x:auto;scrollbar-width:thin;scrollbar-color:rgba(126,147,174,.45) transparent}
.hdr-nav__list::-webkit-scrollbar{height:4px}
.hdr-nav__list::-webkit-scrollbar-thumb{background:rgba(126,147,174,.45)}
.hdr-nav__link{
  position:relative;
  display:block;
  padding:14px 15px 17px;
  font-size:14.5px;
  font-weight:700;
  white-space:nowrap;
  color:var(--c-mist);
  transition:color .2s ease;
}
.hdr-nav__link::after{
  content:"";
  position:absolute;
  left:15px;
  right:15px;
  bottom:9px;
  height:3px;
  background:linear-gradient(90deg,var(--c-orange),var(--c-yellow));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .26s cubic-bezier(.2,.75,.2,1);
}
.hdr-nav__link:hover{color:var(--c-white)}
.hdr-nav__link:hover::after{transform:scaleX(.42)}
.hdr-nav__link[aria-current="page"]{color:var(--c-white)}
.hdr-nav__link[aria-current="page"]::after{transform:scaleX(1)}

.nav-toggle{display:none;align-items:center;gap:10px;padding:12px 14px;border:1px solid var(--line);color:var(--c-white);cursor:pointer}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:18px}
.nav-toggle__bars i{display:block;height:2px;background:var(--c-orange);transition:transform .25s ease,opacity .2s ease}
.nav-toggle__bars i:nth-child(2){width:70%}
.nav-toggle__text{font-size:13px;font-weight:800;letter-spacing:.12em}
.site-header[data-open] .nav-toggle__bars i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bars i:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle__bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ==========================================================================
   页脚：底部台账
   ========================================================================== */
.site-footer{
  position:relative;
  margin-top:clamp(46px,7vw,96px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,#071530 0%,#050f20 58%,#03080f 100%);
  color:var(--c-white);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:linear-gradient(90deg,var(--c-orange) 0 25%,var(--c-purple) 25% 50%,var(--c-cyan) 50% 75%,var(--c-yellow) 75% 100%);
}

.ftr-top{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1.55fr);gap:clamp(26px,4vw,64px);padding-block:clamp(38px,5vw,68px)}
.ftr-brand__name{margin-top:10px;font-family:var(--font-display);font-weight:900;font-size:clamp(26px,3.6vw,40px);line-height:1.08;letter-spacing:-.02em}
.ftr-brand__summary{margin-top:12px;max-width:46ch;font-size:14.5px;line-height:1.8;color:#c3cfe0}
.ftr-facts{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:20px}
.ftr-facts__item{display:inline-flex;align-items:baseline;gap:7px;padding-left:12px;border-left:2px solid var(--c-purple)}
.ftr-facts__num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:18px;font-weight:700;color:var(--c-yellow)}
.ftr-facts__txt{font-size:12.5px;letter-spacing:.06em;color:var(--c-mist)}

.ftr-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(18px,3vw,40px)}
.ftr-col__title{padding-bottom:10px;border-bottom:1px solid var(--line);font-size:12px;font-weight:800;letter-spacing:.2em;color:var(--c-mist)}
.ftr-col__list{display:flex;flex-direction:column;gap:10px;margin-top:14px}
.ftr-link{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;color:#d7e1ee;transition:color .2s ease}
.ftr-link::before{content:"";width:10px;height:2px;background:var(--c-orange);opacity:.55;transition:width .2s ease,opacity .2s ease}
.ftr-link:hover{color:var(--c-yellow)}
.ftr-link:hover::before{width:18px;opacity:1}

.ftr-contact{border-top:1px dashed var(--line);padding-block:clamp(24px,3vw,36px)}
.ftr-contact__title{font-size:12px;font-weight:800;letter-spacing:.2em;color:var(--c-purple)}
.ftr-contact__list{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:10px clamp(18px,3vw,40px);margin-top:16px}
.ftr-contact__row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;min-width:0}
.ftr-contact__k{flex:0 0 44px;font-size:12px;letter-spacing:.1em;color:var(--c-mist)}
.ftr-contact__v{font-size:14px;color:var(--c-white);word-break:break-all}
.copy-btn{
  display:inline-flex;
  align-items:center;
  padding:3px 9px;
  font-size:11px;
  font-weight:800;
  letter-spacing:.1em;
  color:var(--c-mist);
  border:1px dashed var(--line-strong);
  cursor:pointer;
  transition:color .2s ease,border-color .2s ease;
}
.copy-btn:hover{color:var(--c-white);border-color:var(--c-white)}
.copy-btn[data-copied]{color:var(--c-yellow);border-color:var(--c-yellow);border-style:solid}

.ftr-legal{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:6px 20px;padding-block:20px;border-top:1px solid var(--line);font-size:12.5px;color:var(--c-mist)}
.ftr-legal__line--dim{color:rgba(126,147,174,.78)}

/* ==========================================================================
   滚动显现（仅在脚本可用的前提下启用隐藏初态）
   ========================================================================== */
.js-motion [data-reveal]{
  opacity:0;
  transform:translate3d(0,20px,0);
  transition:opacity .6s ease,transform .6s cubic-bezier(.22,.72,.18,1);
  transition-delay:var(--reveal-delay,0ms);
}
.js-motion [data-reveal="left"]{transform:translate3d(-24px,0,0)}
.js-motion [data-reveal="scale"]{transform:scale(.96)}
.js-motion [data-reveal].is-in{opacity:1;transform:none}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width:1040px){
  .hdr-snapshot__item{padding-inline:12px}
  .hdr-snapshot__value{font-size:12px}
}

@media (max-width:960px){
  .hdr-snapshot{display:none}
  .nav-toggle{display:inline-flex}
  .hdr-lower__inner{flex-direction:column;gap:0;padding-block:0}
  .hdr-nav{max-height:0;overflow:hidden;transition:max-height .32s ease}
  .site-header[data-open] .hdr-nav{max-height:min(72vh,540px);overflow-y:auto;padding-bottom:10px}
  .hdr-nav__list{flex-direction:column;overflow:visible}
  .hdr-nav__link{padding:14px 2px;border-bottom:1px dashed var(--line);font-size:15.5px}
  .hdr-nav__link::after{left:0;right:auto;width:30px;bottom:6px}
  .hdr-nav__link:hover::after{transform:scaleX(1)}
  .grid--3,.grid--5-7{grid-template-columns:1fr}
  .ftr-top{grid-template-columns:1fr}
}

@media (max-width:700px){
  .chip-btn{display:none}
  .hdr-upper__inner{justify-content:space-between}
  .hdr-actions{margin-left:auto}
  .grid--2{grid-template-columns:1fr}
  .section-head__note{margin-left:0;max-width:100%}
}

@media (max-width:520px){
  .brand__sub{display:none}
  .ftr-nav{grid-template-columns:1fr}
  .ftr-contact__k{flex-basis:100%}
  .ftr-legal{flex-direction:column;align-items:flex-start}
}

/* ==========================================================================
   动效降级
   ========================================================================== */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .js-motion [data-reveal],
  .js-motion [data-reveal].is-in{opacity:1;transform:none}
  .btn--primary:hover{transform:none}
}