/* ==========================================================================
   牛宝官网 · /assets/site.css
   共享外壳：reset / 令牌 / 中文排版 / 头部 / 页脚 / 基础组件
   ========================================================================== */

/* ---------- 01 设计令牌 ---------- */
:root{
  --nb-orange:#E2703A;
  --nb-clay:#3B2A21;
  --nb-cream:#F6EFE6;
  --nb-caramel:#A9744F;
  --nb-ink:#1B1714;
  --nb-jade:#146B5C;
  --nb-teal:#0E3B3A;
  --nb-wine:#7C2D2D;
  --nb-mist:#F7D9BC;
  --nb-line:#DCCFC0;
  --nb-indigo:#2E2A4A;
  --nb-white:#FFFFFF;

  --nb-sans:"Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --nb-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --nb-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --nb-bw:3px;
  --nb-bw-bold:4px;
  --nb-shadow:8px 8px 0 var(--nb-clay);
  --nb-shadow-sm:5px 5px 0 var(--nb-clay);
  --nb-max:1240px;
  --nb-gutter:clamp(1.15rem,4vw,3.25rem);
  --nb-ease:cubic-bezier(.35,.7,.3,1);
  --nb-header-h:5rem;
}

/* ---------- 02 reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:6.5rem}
body{margin:0}
h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0}
a{color:inherit;text-underline-offset:.22em}
table{border-collapse:collapse;width:100%}
[hidden]{display:none !important}
body.nb-lock{overflow:hidden}

/* ---------- 03 中文排版与全局色面 ---------- */
body{
  background:var(--nb-cream);
  color:var(--nb-ink);
  font-family:var(--nb-serif);
  font-size:17px;
  line-height:1.85;
  font-kerning:normal;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--nb-sans);color:var(--nb-clay);line-height:1.2;letter-spacing:-.02em}
strong{font-weight:700;color:var(--nb-clay)}
::selection{background:var(--nb-orange);color:#fff}

:focus-visible{outline:3px solid var(--nb-orange);outline-offset:3px;border-radius:var(--nb-radius)}

/* ---------- 04 跳转链接 ---------- */
.nb-skip{
  position:fixed;top:.5rem;left:50%;z-index:120;
  transform:translate(-50%,-160%);
  background:var(--nb-orange);color:#fff;
  font-family:var(--nb-sans);font-weight:800;font-size:.9rem;letter-spacing:.04em;
  padding:.7rem 1.25rem;text-decoration:none;
  border:3px solid var(--nb-clay);box-shadow:var(--nb-shadow-sm);
  transition:transform .18s var(--nb-ease);
}
.nb-skip:focus,.nb-skip:focus-visible{transform:translate(-50%,0)}

/* ---------- 05 头部 ---------- */
.nb-header{
  position:sticky;top:0;z-index:60;
  background:var(--nb-cream);
  border-bottom:var(--nb-bw) solid var(--nb-clay);
}
.nb-header__inner{
  max-width:var(--nb-max);margin:0 auto;
  padding:clamp(.85rem,2vw,1.35rem) var(--nb-gutter);
  display:flex;align-items:center;gap:clamp(.9rem,2.4vw,2rem);
  justify-content:space-between;
  transition:padding .2s var(--nb-ease);
}
.nb-header[data-scrolled] .nb-header__inner{padding-top:.5rem;padding-bottom:.5rem}
.nb-header[data-scrolled]{border-top:3px solid var(--nb-orange)}

/* 品牌区 */
.nb-brand{
  display:flex;align-items:baseline;gap:.7rem;
  flex:0 0 auto;text-decoration:none;
}
.nb-brand__mark{
  position:relative;
  font-family:var(--nb-sans);font-weight:900;
  font-size:clamp(1.45rem,3vw,1.95rem);
  letter-spacing:-.02em;color:var(--nb-clay);
  padding-left:1.05rem;
}
.nb-brand__mark::before{
  content:"";position:absolute;left:0;top:.5em;
  width:.6rem;height:.6rem;background:var(--nb-orange);
  border:2px solid var(--nb-clay);
}
.nb-brand__tagline{
  display:none;
  font-family:var(--nb-sans);font-size:.72rem;font-weight:600;
  letter-spacing:.1em;color:var(--nb-caramel);white-space:nowrap;
}

/* 中部刻度尺 */
.nb-header__gauge{
  display:none;flex:1 1 auto;min-width:3rem;height:12px;
  align-self:center;
  border-bottom:1px solid var(--nb-line);
  background-image:repeating-linear-gradient(90deg,var(--nb-line) 0 2px,transparent 2px 14px);
  background-size:100% 7px;background-position:left bottom;background-repeat:repeat-x;
}

/* 导航 */
.nb-nav{display:flex;align-items:center;gap:clamp(1rem,2.2vw,1.9rem);flex:0 0 auto}
.nb-nav__list{display:flex;align-items:center;gap:clamp(.7rem,1.4vw,1.35rem)}
.nb-nav__link{
  display:inline-block;padding:.3rem .1rem;
  font-family:var(--nb-sans);font-weight:700;
  font-size:clamp(.82rem,1vw,.9rem);letter-spacing:.02em;
  color:var(--nb-clay);text-decoration:none;
  border-bottom:3px solid transparent;
  transition:border-color .16s var(--nb-ease),color .16s var(--nb-ease);
}
.nb-nav__link:hover{border-bottom-color:var(--nb-caramel);color:var(--nb-caramel)}
.nb-nav__link[aria-current="page"]{color:var(--nb-orange);border-bottom-color:var(--nb-orange)}

/* 客服电话 */
.nb-phone{display:flex;flex-direction:column;align-items:flex-end;gap:.05rem}
.nb-phone__label{
  font-family:var(--nb-sans);font-size:.62rem;font-weight:700;
  letter-spacing:.16em;color:var(--nb-caramel);
}
.nb-phone__num{
  font-family:var(--nb-mono);font-size:.98rem;font-weight:600;
  letter-spacing:.01em;color:var(--nb-clay);
}

/* 抽屉按钮 */
.nb-navtoggle{
  display:none;align-items:center;gap:.55rem;
  padding:.5rem .75rem;
  border:3px solid var(--nb-clay);color:var(--nb-clay);
  font-family:var(--nb-sans);font-weight:800;font-size:.75rem;letter-spacing:.12em;
  cursor:pointer;background:var(--nb-cream);
}
.nb-navtoggle:hover{background:var(--nb-mist)}
.nb-navtoggle__box{display:block;width:16px}
.nb-navtoggle__bar{
  display:block;width:16px;height:2px;margin:3px 0;
  background:currentColor;
  transition:transform .2s var(--nb-ease),opacity .2s var(--nb-ease);
}
.nb-navtoggle__close{display:none}
.nb-navtoggle[aria-expanded="true"] .nb-navtoggle__open{display:none}
.nb-navtoggle[aria-expanded="true"] .nb-navtoggle__close{display:inline}
.nb-navtoggle[aria-expanded="true"] .nb-navtoggle__bar:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nb-navtoggle[aria-expanded="true"] .nb-navtoggle__bar:nth-child(2){opacity:0}
.nb-navtoggle[aria-expanded="true"] .nb-navtoggle__bar:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* 进度轨 */
.nb-progress{position:absolute;left:0;right:0;bottom:0;height:4px;pointer-events:none;overflow:hidden}
.nb-progress__bar{
  display:block;height:100%;width:0;
  background:var(--nb-orange);
  transition:width .1s linear;
}

/* ---------- 06 页脚 ---------- */
.nb-footer{
  margin-top:clamp(3rem,8vw,6rem);
  background:var(--nb-clay);color:var(--nb-cream);
  border-top:6px solid var(--nb-orange);
}
.nb-footer__inner{
  max-width:var(--nb-max);margin:0 auto;
  padding:clamp(2.4rem,6vw,4.25rem) var(--nb-gutter) clamp(1.6rem,4vw,2.25rem);
  display:grid;gap:clamp(1.75rem,4vw,3rem);
  grid-template-columns:minmax(0,1.3fr) minmax(0,1.15fr) minmax(0,1fr);
}
.nb-footer__mark{
  position:relative;padding-left:1.15rem;
  font-family:var(--nb-sans);font-weight:900;
  font-size:clamp(1.7rem,4vw,2.35rem);letter-spacing:-.02em;color:var(--nb-cream);
}
.nb-footer__mark::before{
  content:"";position:absolute;left:0;top:.45em;
  width:.62rem;height:.62rem;background:var(--nb-orange);
}
.nb-footer__lede{
  margin-top:.85rem;max-width:36ch;
  font-size:.98rem;line-height:1.85;color:rgba(246,239,230,.76);
}
.nb-footer__cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.5rem}
.nb-footer__title{
  position:relative;
  font-family:var(--nb-sans);font-size:.72rem;font-weight:800;
  letter-spacing:.16em;color:var(--nb-mist);margin-bottom:1rem;
}
.nb-footer__title::before{
  content:"";display:inline-block;width:14px;height:3px;
  background:var(--nb-orange);margin-right:.5rem;vertical-align:.28em;
}
.nb-footer__list{display:flex;flex-direction:column;gap:.55rem}
.nb-footer__link{
  font-family:var(--nb-sans);font-size:.9rem;font-weight:600;
  color:rgba(246,239,230,.88);text-decoration:none;
  border-bottom:2px solid transparent;
  transition:color .16s var(--nb-ease),border-color .16s var(--nb-ease);
}
.nb-footer__link:hover{color:var(--nb-orange);border-bottom-color:var(--nb-orange)}
.nb-footer__row{display:flex;align-items:center;flex-wrap:wrap;gap:.4rem}
.nb-footer__value{
  font-family:var(--nb-mono);font-size:.85rem;
  color:rgba(246,239,230,.88);word-break:break-all;
}
.nb-footer__meta{
  margin-top:1rem;font-size:.82rem;line-height:1.75;
  color:rgba(246,239,230,.6);max-width:34ch;
}
.nb-footer__bottom{
  max-width:var(--nb-max);margin:0 auto;
  padding:1.15rem var(--nb-gutter) 1.9rem;
  border-top:1px solid rgba(220,207,192,.42);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:.6rem 1.5rem;
  font-family:var(--nb-sans);font-size:.78rem;letter-spacing:.03em;
  color:rgba(246,239,230,.68);
}
.nb-footer__copy{font-weight:600}
.nb-footer__legal{display:flex;flex-wrap:wrap;gap:.4rem 1.15rem}
.nb-footer__legal .nb-footer__link{font-size:.78rem;font-weight:600}
.nb-footer__icp{font-family:var(--nb-mono);font-size:.76rem;letter-spacing:0}

/* 复制按钮 */
.nb-copy{
  font-family:var(--nb-sans);font-size:.68rem;font-weight:800;letter-spacing:.1em;
  padding:.15rem .5rem;margin-left:.45rem;
  border:2px solid rgba(246,239,230,.5);color:var(--nb-mist);
  cursor:pointer;
  transition:background-color .16s var(--nb-ease),color .16s var(--nb-ease),border-color .16s var(--nb-ease);
}
.nb-copy:hover{background:var(--nb-orange);border-color:var(--nb-orange);color:#fff}

/* 回顶 */
.nb-top{
  position:fixed;right:clamp(1rem,3vw,2rem);bottom:clamp(1rem,3vw,2rem);z-index:50;
  padding:.65rem 1rem;
  font-family:var(--nb-sans);font-weight:800;font-size:.8rem;letter-spacing:.06em;
  background:var(--nb-cream);color:var(--nb-clay);
  border:3px solid var(--nb-clay);box-shadow:var(--nb-shadow-sm);
  cursor:pointer;
  transition:transform .16s var(--nb-ease),box-shadow .16s var(--nb-ease),background-color .16s var(--nb-ease);
}
.nb-top:hover{background:var(--nb-orange);color:#fff;transform:translate(2px,2px);box-shadow:3px 3px 0 var(--nb-clay)}

/* ---------- 07 容器与章节 ---------- */
.nb-shell{width:100%;max-width:var(--nb-max);margin-inline:auto;padding-inline:var(--nb-gutter)}
.nb-shell--legal{max-width:680px}
.nb-section{padding-block:clamp(2.25rem,6vw,4.5rem)}
.nb-section--tight{padding-block:clamp(1.5rem,4vw,2.5rem)}
.nb-eyebrow{
  font-family:var(--nb-sans);font-size:.72rem;font-weight:800;
  letter-spacing:.18em;color:var(--nb-caramel);margin-bottom:.7rem;
}
.nb-h1{
  font-family:var(--nb-sans);font-weight:900;
  font-size:clamp(2.4rem,6vw,5rem);letter-spacing:-.02em;line-height:1.02;
  color:var(--nb-clay);
}
.nb-h2{
  font-family:var(--nb-sans);font-weight:900;
  font-size:clamp(1.65rem,3.6vw,2.5rem);letter-spacing:-.02em;line-height:1.14;
  margin-bottom:.9rem;
}
.nb-h3{
  font-family:var(--nb-sans);font-weight:800;
  font-size:clamp(1.1rem,1.8vw,1.35rem);letter-spacing:-.01em;
  margin-bottom:.5rem;
}
.nb-lead{font-size:clamp(1rem,1.5vw,1.12rem);line-height:1.9;color:#40332b;max-width:60ch}
.nb-prose{font-size:1.02rem;line-height:1.9;color:#3a2f28}
.nb-prose p+p{margin-top:1rem}
.nb-prose h2{margin:2.2rem 0 .8rem}
.nb-prose h3{margin:1.6rem 0 .5rem}
.nb-prose ul{list-style:disc;padding-left:1.2rem;margin:1rem 0}
.nb-prose li+li{margin-top:.4rem}
.nb-rule{height:3px;border:0;background:var(--nb-clay);margin-block:clamp(1.75rem,5vw,3rem)}
.nb-rule--dashed{background-image:repeating-linear-gradient(90deg,var(--nb-clay) 0 16px,transparent 16px 30px);background-color:transparent}

/* ---------- 08 面包屑 ---------- */
.nb-crumbs{font-family:var(--nb-sans);font-size:.78rem;letter-spacing:.05em;padding-block:1.1rem}
.nb-crumbs ol{display:flex;flex-wrap:wrap;gap:.35rem}
.nb-crumbs a{color:var(--nb-caramel);text-decoration:none}
.nb-crumbs a:hover{color:var(--nb-orange);text-decoration:underline}
.nb-crumbs li+li::before{content:"/";margin-right:.35rem;color:var(--nb-line)}
.nb-crumbs [aria-current="page"]{color:var(--nb-clay);font-weight:700}

/* ---------- 09 按钮 ---------- */
.nb-btn{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.85rem 1.4rem;
  font-family:var(--nb-sans);font-weight:800;font-size:.94rem;letter-spacing:.03em;
  background:var(--nb-cream);color:var(--nb-clay);
  border:3px solid var(--nb-clay);box-shadow:6px 6px 0 var(--nb-clay);
  text-decoration:none;cursor:pointer;
  transition:transform .16s var(--nb-ease),box-shadow .16s var(--nb-ease),background-color .16s var(--nb-ease),color .16s var(--nb-ease);
}
.nb-btn:hover{transform:translate(3px,3px);box-shadow:3px 3px 0 var(--nb-clay);background:var(--nb-mist)}
.nb-btn--primary{background:var(--nb-orange);color:#fff}
.nb-btn--primary:hover{background:#cf5f2c;color:#fff}
.nb-btn--ghost{box-shadow:none;background:transparent}
.nb-btn--ghost:hover{transform:none;background:var(--nb-mist)}

/* ---------- 10 Bento 网格与卡片 ---------- */
.nb-bento{display:grid;grid-template-columns:repeat(12,1fr);gap:clamp(.9rem,2vw,1.5rem)}
.nb-bento>*{grid-column:span 12;min-width:0}
@media (min-width:720px){
  .nb-span-4{grid-column:span 4}
  .nb-span-5{grid-column:span 5}
  .nb-span-6{grid-column:span 6}
  .nb-span-7{grid-column:span 7}
  .nb-span-8{grid-column:span 8}
  .nb-span-12{grid-column:span 12}
}
.nb-grid{display:grid;gap:clamp(.9rem,2vw,1.4rem);grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr))}
.nb-card{
  background:var(--nb-white);
  border:var(--nb-bw) solid var(--nb-clay);
  box-shadow:var(--nb-shadow);
  padding:clamp(1.1rem,2.6vw,1.75rem);
  transition:transform .16s var(--nb-ease),box-shadow .16s var(--nb-ease),border-color .16s var(--nb-ease);
}
.nb-card:hover{transform:translate(4px,4px);box-shadow:4px 4px 0 var(--nb-clay);border-color:var(--nb-ink)}
.nb-card--mist{background:var(--nb-mist)}
.nb-card--ink{background:var(--nb-ink);color:var(--nb-cream);border-color:var(--nb-ink)}
.nb-card--ink .nb-h3,.nb-card--ink .nb-h2{color:var(--nb-cream)}

/* ---------- 11 数字锚点 ---------- */
.nb-num{font-family:var(--nb-mono);font-variant-numeric:tabular-nums;letter-spacing:-.03em}
.nb-stat-grid{display:grid;gap:clamp(1rem,3vw,2rem);grid-template-columns:repeat(auto-fit,minmax(min(100%,170px),1fr))}
.nb-stat{padding-top:.75rem;border-top:3px solid var(--nb-clay)}
.nb-stat__num{
  display:block;font-family:var(--nb-mono);font-weight:600;
  font-size:clamp(2.2rem,6vw,3.6rem);line-height:1;letter-spacing:-.04em;
  color:var(--nb-orange);
}
.nb-stat__label{
  display:block;margin-top:.55rem;
  font-family:var(--nb-sans);font-size:.76rem;font-weight:700;
  letter-spacing:.12em;color:var(--nb-caramel);
}

/* ---------- 12 标签与色带 ---------- */
.nb-chip{
  display:inline-flex;align-items:center;gap:.35rem;
  padding:.22rem .6rem;
  font-family:var(--nb-sans);font-size:.72rem;font-weight:800;letter-spacing:.08em;
  border:2px solid var(--nb-clay);background:var(--nb-cream);color:var(--nb-clay);
  white-space:nowrap;
}
.nb-chip--cat{background:var(--nb-wine);border-color:var(--nb-wine);color:#fff}
.nb-chip--night{background:var(--nb-indigo);border-color:var(--nb-indigo);color:#fff}
.nb-chip--status{background:var(--nb-jade);border-color:var(--nb-jade);color:#fff}
.nb-chip--soft{background:var(--nb-mist);border-color:var(--nb-clay)}
.nb-band{background:var(--nb-teal);color:var(--nb-cream);padding-block:clamp(1.75rem,5vw,3rem)}
.nb-band .nb-h2,.nb-band .nb-h3,.nb-band strong{color:var(--nb-cream)}
.nb-band--wine{background:var(--nb-wine)}
.nb-band--mist{background:var(--nb-mist);color:var(--nb-ink)}
.nb-band--mist .nb-h2,.nb-band--mist .nb-h3{color:var(--nb-clay)}
.nb-band--ink{background:var(--nb-ink);color:var(--nb-cream)}
.nb-band--ink .nb-h2,.nb-band--ink .nb-h3{color:var(--nb-cream)}

/* ---------- 13 标签页 ---------- */
.nb-tabs{--nb-tab-gap:.5rem}
.nb-tabs__list{
  display:flex;flex-wrap:wrap;gap:var(--nb-tab-gap);
  border-bottom:3px solid var(--nb-clay);
}
.nb-tab{
  padding:.65rem 1.1rem;
  font-family:var(--nb-sans);font-weight:800;font-size:.88rem;letter-spacing:.03em;
  background:var(--nb-cream);color:var(--nb-clay);
  border:3px solid var(--nb-clay);border-bottom:0;
  transform:translateY(3px);cursor:pointer;
  transition:background-color .2s var(--nb-ease),color .2s var(--nb-ease),transform .2s var(--nb-ease);
}
.nb-tab:hover{background:var(--nb-mist)}
.nb-tab[aria-selected="true"]{background:var(--nb-orange);color:#fff;transform:translateY(0)}
.nb-panel{padding-top:1.4rem}
@keyframes nb-panel-in{from{opacity:0;transform:translateX(14px)}to{opacity:1;transform:none}}
.nb-panel.is-active{animation:nb-panel-in .24s var(--nb-ease) both}

/* ---------- 14 折叠面板 ---------- */
.nb-acc{border:var(--nb-bw) solid var(--nb-clay);background:var(--nb-white)}
.nb-acc+.nb-acc{margin-top:-3px}
.nb-acc__btn{
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
  width:100%;padding:1.05rem 1.25rem;text-align:left;cursor:pointer;
  font-family:var(--nb-sans);font-weight:800;font-size:1rem;color:var(--nb-clay);
  transition:background-color .18s var(--nb-ease);
}
.nb-acc__btn:hover{background:var(--nb-mist)}
.nb-acc__btn[aria-expanded="true"]{background:var(--nb-mist)}
.nb-acc__icon{
  flex:0 0 auto;width:1.1rem;height:1.1rem;position:relative;
}
.nb-acc__icon::before,.nb-acc__icon::after{
  content:"";position:absolute;left:0;top:50%;width:100%;height:3px;
  background:var(--nb-clay);transform:translateY(-50%);
}
.nb-acc__icon::after{transform:translateY(-50%) rotate(90deg);transition:transform .2s var(--nb-ease)}
.nb-acc__btn[aria-expanded="true"] .nb-acc__icon::after{transform:translateY(-50%) rotate(0deg)}
.nb-acc__panel{
  overflow:hidden;max-height:0;
  border-top:1px dashed var(--nb-line);
  transition:max-height .2s var(--nb-ease);
}
.nb-acc__panel>*{padding:0 1.25rem}
.nb-acc__panel>*:first-child{padding-top:1.05rem}
.nb-acc__panel>*:last-child{padding-bottom:1.2rem}

/* ---------- 15 图片容器 ---------- */
.nb-figure{
  margin:0;border:var(--nb-bw) solid var(--nb-clay);
  background:var(--nb-white);box-shadow:var(--nb-shadow);overflow:hidden;
}
.nb-figure__media{
  position:relative;aspect-ratio:4/3;
  background-color:var(--nb-mist);
  background-image:repeating-linear-gradient(135deg,rgba(59,42,33,.09) 0 10px,transparent 10px 20px);
}
.nb-figure__media img{width:100%;height:100%;object-fit:cover}
.nb-figure__cap{
  padding:.7rem .95rem;
  font-family:var(--nb-sans);font-size:.78rem;font-weight:600;letter-spacing:.04em;
  color:var(--nb-clay);background:var(--nb-cream);
  border-top:3px solid var(--nb-clay);
}
.nb-figure--wide .nb-figure__media{aspect-ratio:16/9}
.nb-figure--square .nb-figure__media{aspect-ratio:1/1}
.nb-figure--tall .nb-figure__media{aspect-ratio:3/4}

/* ---------- 16 显现动效 ---------- */
.nb-js [data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .5s var(--nb-ease),transform .5s var(--nb-ease)}
.nb-js [data-reveal].is-in{opacity:1;transform:none}

/* ---------- 17 响应式 ---------- */
@media (min-width:1100px){
  .nb-brand__tagline{display:inline}
  .nb-header__gauge{display:block}
}
@media (min-width:1024px){
  .nb-header[data-scrolled]{background:var(--nb-clay);border-bottom-color:var(--nb-orange)}
  .nb-header[data-scrolled] .nb-brand__mark{color:var(--nb-cream)}
  .nb-header[data-scrolled] .nb-brand__tagline{color:var(--nb-mist)}
  .nb-header[data-scrolled] .nb-nav__link{color:var(--nb-cream)}
  .nb-header[data-scrolled] .nb-nav__link:hover{color:var(--nb-orange)}
  .nb-header[data-scrolled] .nb-phone__label{color:var(--nb-mist)}
  .nb-header[data-scrolled] .nb-phone__num{color:var(--nb-orange)}
  .nb-header[data-scrolled] .nb-header__gauge{
    border-bottom-color:rgba(246,239,230,.3);
    background-image:repeating-linear-gradient(90deg,rgba(246,239,230,.3) 0 2px,transparent 2px 14px);
  }
}
@media (max-width:1023px){
  .nb-navtoggle{display:inline-flex}
  .nb-nav{
    position:fixed;top:0;right:0;bottom:0;left:auto;z-index:55;
    width:min(86vw,22rem);
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:1.4rem;padding:6.5rem 1.5rem 2rem;
    background:var(--nb-clay);
    border-left:4px solid var(--nb-orange);
    overflow-y:auto;
    transform:translateX(103%);visibility:hidden;
    transition:transform .24s var(--nb-ease),visibility .24s var(--nb-ease);
  }
  .nb-nav[data-open="true"]{transform:translateX(0);visibility:visible}
  .nb-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .nb-nav__item{border-bottom:1px solid rgba(246,239,230,.18)}
  .nb-nav__link{
    display:block;width:100%;padding:.95rem .1rem;
    font-size:1.12rem;color:var(--nb-cream);border-bottom:0;
  }
  .nb-nav__link:hover{color:var(--nb-orange)}
  .nb-nav__link[aria-current="page"]{color:var(--nb-orange)}
  .nb-phone{
    align-items:flex-start;gap:.2rem;
    padding-top:1.15rem;border-top:3px solid rgba(246,239,230,.25);
  }
  .nb-phone__label{color:var(--nb-mist)}
  .nb-phone__num{color:var(--nb-cream);font-size:1.3rem}
}
@media (max-width:900px){
  .nb-footer__inner{grid-template-columns:repeat(2,minmax(0,1fr))}
  .nb-footer__brand{grid-column:1/-1}
}
@media (max-width:560px){
  .nb-footer__inner{grid-template-columns:minmax(0,1fr)}
  .nb-footer__cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .nb-footer__bottom{flex-direction:column;align-items:flex-start}
  .nb-tab{padding:.55rem .8rem;font-size:.82rem}
  .nb-stat__num{font-size:2.1rem}
}

/* ---------- 18 无障碍：减弱动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  .nb-js [data-reveal]{opacity:1;transform:none}
  .nb-btn:hover,.nb-card:hover,.nb-top:hover{transform:none}
}