/* =========================================================
   全站基础样式
   - 单位：rem（≥1200px 按 1920 设计稿，1rem=100px@1920；761~1199px 固定 1rem=62.5px；≤760px 按 750 设计稿，1rem=100px@750）
   - 断点：1199px 切换手机导航；760px 切换 PC / 手机内容（.pc-show / .wap-show）
   - 颜色变量见 :root
   ========================================================= */
:root {
  /* 主题色由 base.html 按后台“站点设置 → 主题配色”覆盖 */
  --c-primary: #1A6AE6;
  --c-primary-soft: rgba(26, 106, 230, .08);
  --c-primary-soft-2: rgba(26, 106, 230, .16);
  --c-warm: #FF9F1C;
  --c-ink: #132D5E;
  --c-text: #1d2733;
  --c-text-2: #555;
  --c-text-3: #888;
  --c-line: #e5e5e5;
  --c-bg-gray: #f3f6f7;
  --c-bg-gray-2: #f7f9fa;
  --c-dark: var(--c-ink);
  --c-accent: var(--c-primary);
  --c-teal: #55c8c3;
  --header-h: .8rem;
  --radius: .16rem;
  --radius-lg: .28rem;
  --shadow: 0 .16rem .48rem rgba(19, 40, 59, .1);
  --ease: cubic-bezier(.25, .8, .25, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: .16rem; line-height: 1.6; color: var(--c-text); background: #fff;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img, video { display: block; max-width: 100%; }
button { font: inherit; background: none; border: 0; cursor: pointer; color: inherit; }
input, textarea, select { font: inherit; color: inherit; outline: none; }
h1, h2, h3, h4 { font-weight: 600; line-height: 1.3; }
.ico { width: 1em; height: 1em; display: inline-block; vertical-align: middle; flex-shrink: 0; }

/* ---------- 布局工具 ---------- */
.container { width: 14.4rem; max-width: 92%; margin: 0 auto; }
.container-sm { width: 12rem; max-width: 92%; margin: 0 auto; }
.sec { padding: 1.2rem 0; }
.sec-gray { background: var(--c-bg-gray); }
.sec-dark { background: var(--c-dark); color: #fff; }
.sec-head { text-align: center; margin-bottom: .6rem; }
.sec-title { font-size: .48rem; font-weight: 700; letter-spacing: .01rem; }
.sec-title::after { content: ""; display: block; width: .48rem; height: .05rem; margin: .2rem auto 0; border-radius: .05rem; background: linear-gradient(90deg, var(--c-primary) 60%, var(--c-warm) 60%); }
.sec-sub { margin-top: .2rem; font-size: .2rem; color: var(--c-text-2); line-height: 1.8; }
.sec-dark .sec-sub { color: rgba(255, 255, 255, .7); }
.pc-show { display: block; }
.wap-show { display: none !important; }
.pic { display: block; }
.pic img { width: 100%; height: auto; }
.img-cover { width: 100%; height: 100%; object-fit: cover; }
.radius { border-radius: var(--radius); overflow: hidden; }
.radius-lg { border-radius: var(--radius-lg); overflow: hidden; }

/* ---------- 按钮 ---------- */
.btn-more { display: inline-flex; align-items: center; gap: .1rem; font-size: .18rem; font-weight: 500; color: var(--c-primary); }
.btn-more .ico { width: .3rem; height: .3rem; padding: .06rem; border-radius: 50%; background: var(--c-primary-soft); }
.btn-more span { position: relative; }
.btn-more span::after { content: ""; position: absolute; left: 0; bottom: -.02rem; width: 0; height: 1px; background: currentColor; transition: width .3s; }
.btn-more .ico { transition: transform .3s; }
.btn-more:hover span::after { width: 100%; }
.btn-more:hover .ico { transform: translateX(.05rem); }
.btn-black { display: inline-flex; align-items: center; justify-content: center; gap: .08rem; height: .52rem; padding: 0 .4rem; border-radius: .12rem; background: var(--c-primary); color: #fff; font-size: .18rem; box-shadow: 0 .08rem .2rem var(--c-primary-soft-2); transition: filter .3s, transform .3s; }
.btn-black:hover { filter: brightness(.92); transform: translateY(-1px); }
.btn-line { display: inline-flex; align-items: center; justify-content: center; height: .48rem; padding: 0 .36rem; border: 1px solid var(--c-primary); border-radius: .12rem; color: var(--c-primary); font-size: .16rem; transition: all .3s; }
.btn-line:hover { background: var(--c-primary); color: #fff; }

/* ---------- 滚动入场动画（main.js 给进入可视区的 [data-reveal] 加 .in） ---------- */
[data-reveal] { opacity: 0; transform: translateY(.6rem); transition: opacity 1s var(--ease), transform 1s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal="fade"] { transform: none; }
[data-reveal="left"] { transform: translateX(-.6rem); }
[data-reveal="right"] { transform: translateX(.6rem); }
[data-reveal="left"].in, [data-reveal="right"].in { transform: none; }
.reveal-d1 { transition-delay: .1s !important; }
.reveal-d2 { transition-delay: .2s !important; }
.reveal-d3 { transition-delay: .3s !important; }
.reveal-d4 { transition-delay: .4s !important; }

/* =========================================================
   头部导航
   ========================================================= */
.header { position: fixed; z-index: 100; left: 0; top: 0; width: 100%; height: var(--header-h); background: transparent; transition: background .4s, box-shadow .4s, color .4s; }
.header-inner { height: 100%; width: 16.8rem; max-width: 94%; margin: 0 auto; display: flex; align-items: center; }
.logo { position: relative; flex-shrink: 0; height: .44rem; display: flex; align-items: center; }
.logo img { height: 100%; width: auto; transition: opacity .3s; }
.logo .logo-light { position: absolute; left: 0; top: 0; opacity: 0; }
.nav { flex: 1; height: 100%; display: flex; justify-content: flex-end; margin-right: .44rem; }
.nav-list { display: flex; height: 100%; gap: .46rem; }
.nav-item { height: 100%; display: flex; align-items: center; }
.nav-row { height: 100%; display: flex; align-items: center; }
.nav-link { position: relative; height: 100%; display: flex; align-items: center; font-size: .17rem; white-space: nowrap; }
.nav-link::after { content: ""; position: absolute; left: 50%; bottom: .16rem; width: .06rem; height: .06rem; border-radius: 50%; background: var(--c-primary); transform: translateX(-50%) scale(0); transition: transform .3s; }
.nav-item:hover .nav-link::after, .nav-item.active .nav-link::after { transform: translateX(-50%) scale(1); }
.nav-item.active .nav-link { font-weight: 600; }
body:not(.page-home) .nav-item.active .nav-link, .header.is-hover .nav-item.active .nav-link, body.scrolled .nav-item.active .nav-link { color: var(--c-primary); }
.nav-plus { display: none; }
.mall-btn { flex-shrink: 0; display: inline-flex; align-items: center; gap: .06rem; height: .42rem; padding: 0 .22rem; border-radius: .1rem; background: var(--c-primary); color: #fff; font-size: .15rem; transition: opacity .3s; }
.mall-btn:hover { opacity: .85; }
.mall-btn .ico { font-size: .18rem; }
.nav-toggle { display: none; }

/* 下拉面板（PC） */
.drop { position: absolute; left: 0; top: 100%; width: 100%; background: #fff; border-top: 1px solid var(--c-line); box-shadow: 0 .12rem .3rem rgba(19, 40, 59, .08); color: var(--c-text); display: none; }
.drop-icons-inner { display: flex; justify-content: center; gap: .9rem; padding: .3rem 0 .34rem; }
.drop-icon-item { display: flex; flex-direction: column; align-items: center; gap: .12rem; font-size: .15rem; color: var(--c-text-2); transition: color .3s; }
.drop-icon-item .ico { width: .64rem; height: .64rem; padding: .16rem; border-radius: 50%; background: var(--c-primary-soft); color: var(--c-primary); stroke-width: 1.5; transition: all .3s; }
.drop-icon-item:hover { color: var(--c-primary); }
.drop-icon-item:hover .ico { background: var(--c-primary); color: #fff; }
.mega { display: flex; padding: .3rem 0 .4rem; min-height: 3.4rem; }
.mega-cats { width: 29%; padding-right: .3rem; border-right: 1px solid var(--c-line); }
.mega-cat a { display: block; padding: .14rem .24rem; border-radius: .1rem; font-size: .17rem; transition: all .3s; }
.mega-cat.on a { background: var(--c-primary-soft); color: var(--c-primary); font-weight: 600; }
.mega-body { flex: 1; padding-left: .5rem; }
.mega-pane, .mega-products { display: none; }
.mega-pane.on { display: block; }
.mega-products.on { display: grid; }
.mega-series { display: flex; flex-wrap: wrap; align-items: center; margin-bottom: .24rem; }
.mega-series a { font-size: .16rem; color: var(--c-text-3); padding: 0 .2rem; line-height: 1; border-left: 1px solid var(--c-line); transition: color .3s; }
.mega-series a:first-child { padding-left: 0; border-left: 0; }
.mega-series a.on, .mega-series a:hover { color: var(--c-primary); font-weight: 600; }
.mega-products { grid-template-columns: repeat(4, 1fr); gap: .24rem; }
.mega-product { display: block; text-align: center; }
.mega-thumb { display: block; aspect-ratio: 1; border-radius: var(--radius); overflow: hidden; background: var(--c-bg-gray-2); }
.mega-thumb img { width: 100%; height: 100%; object-fit: contain; transition: transform .5s; }
.mega-product:hover .mega-thumb img { transform: scale(1.05); }
.mega-name { display: block; margin-top: .1rem; font-size: .15rem; }
.mega-mobile { display: none; }

/* 头部状态：滚动后 / 悬停下拉时白底；首页第一屏半透明黑底白字 */
body.scrolled .header, .header.is-hover, body.header-solid .header { background: #fff; box-shadow: 0 .04rem .2rem rgba(19, 40, 59, .06); }
body.page-home .header { background: linear-gradient(rgba(10, 22, 34, .45), rgba(10, 22, 34, 0)); color: #fff; }
body.page-home .logo .logo-light { opacity: 1; }
body.page-home .logo .logo-dark { opacity: 0; }

body.page-home.scrolled .header, body.page-home .header.is-hover { background: #fff; color: var(--c-text); }
body.page-home.scrolled .logo .logo-light, body.page-home .header.is-hover .logo .logo-light { opacity: 0; }
body.page-home.scrolled .logo .logo-dark, body.page-home .header.is-hover .logo .logo-dark { opacity: 1; }

body.header-solid .main { padding-top: var(--header-h); }

/* =========================================================
   内页通用：Banner、二级切换条
   ========================================================= */
.inner-banner { position: relative; }
.inner-banner .pic img { width: 100%; height: auto; }
.inner-banner .swiper-pagination { bottom: .3rem !important; }
.swiper-pagination-bullet { width: .1rem; height: .1rem; background: #fff; opacity: .5; }
.swiper-pagination-bullet-active { opacity: 1; }
.subnav { background: #fff; border-bottom: 1px solid var(--c-line); }
.subnav-wrap { display: flex; align-items: center; justify-content: space-between; gap: .4rem; min-height: .84rem; }
.crumb { display: flex; align-items: center; flex-wrap: wrap; gap: .08rem; font-size: .15rem; color: var(--c-text-3); }
.crumb a:hover { color: var(--c-primary); }
.crumb .ico { font-size: .14rem; opacity: .6; }
.crumb span:last-child { color: var(--c-text); }
.subnav-inner { display: flex; align-items: center; gap: .12rem; }
.subnav-item { position: relative; display: block; padding: .1rem .28rem; border-radius: .4rem; font-size: .17rem; color: var(--c-text-2); transition: all .3s; }
.subnav-item:hover { color: var(--c-primary); }
.subnav-item.on { background: var(--c-primary-soft); color: var(--c-primary); font-weight: 600; }

/* 通用滑块控件 */
.slide-btn { width: .56rem; height: .56rem; border-radius: 50%; border: 1px solid var(--c-line); display: inline-flex; align-items: center; justify-content: center; font-size: .22rem; background: #fff; transition: all .3s; cursor: pointer; }
.slide-btn:hover { background: var(--c-text); border-color: var(--c-text); color: #fff; }
.slide-btn.swiper-button-disabled { opacity: .3; pointer-events: none; }
.slide-progress { position: relative; height: 2px; background: var(--c-line); overflow: hidden; }
.slide-progress .swiper-scrollbar-drag, .slide-progress i { position: absolute; left: 0; top: 0; height: 100%; background: var(--c-text); border-radius: 0; }

/* 视频 / 媒体 */
.media { position: relative; overflow: hidden; }
.media-video { width: 100%; height: 100%; object-fit: cover; }
.play-btn { position: absolute; left: 50%; top: 50%; width: .9rem; height: .9rem; margin: -.45rem 0 0 -.45rem; border-radius: 50%; background: rgba(255, 255, 255, .9); color: var(--c-text); display: flex; align-items: center; justify-content: center; font-size: .32rem; padding-left: .04rem; transition: transform .3s; cursor: pointer; z-index: 2; }
.play-btn:hover { transform: scale(1.08); }

/* 视频弹窗（main.js：Site.playVideo(url)） */
.video-modal { position: fixed; z-index: 1000; inset: 0; background: rgba(0, 0, 0, .85); display: none; align-items: center; justify-content: center; }
.video-modal.show { display: flex; }
.video-modal-box { position: relative; width: 12rem; max-width: 92%; }
.video-modal video { width: 100%; max-height: 80vh; background: #000; border-radius: .08rem; }
.video-modal-close { position: absolute; right: -.5rem; top: -.5rem; width: .4rem; height: .4rem; color: #fff; font-size: .32rem; display: flex; align-items: center; justify-content: center; }

/* 提示框（Site.toast） */
.toast { position: fixed; z-index: 1100; left: 50%; top: 45%; transform: translate(-50%, -50%) scale(.9); max-width: 80%; padding: .16rem .3rem; border-radius: .1rem; background: rgba(0, 0, 0, .82); color: #fff; font-size: .16rem; text-align: center; opacity: 0; transition: all .25s; pointer-events: none; }
.toast.show { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.toast.success::before { content: "✓ "; color: #6ee7b7; }
.toast.error::before { content: "! "; color: #fca5a5; }

/* 返回顶部 */
.back-top { position: fixed; z-index: 90; right: 3%; bottom: 10%; width: .64rem; padding: .1rem 0; border-radius: .1rem; background: #f0f0f0; color: var(--c-text-2); font-size: .12rem; display: flex; flex-direction: column; align-items: center; gap: .02rem; opacity: 0; visibility: hidden; transition: all .3s; }
.back-top svg { width: .22rem; height: .22rem; }
.back-top.show { opacity: 1; visibility: visible; }
.back-top:hover { background: var(--c-text); color: #fff; }

/* =========================================================
   页脚（深色背景：左品牌与联系方式 / 中栏目链接 / 右二维码）
   ========================================================= */
.footer { background: var(--c-ink); color: rgba(255, 255, 255, .62); font-size: .15rem; }
.footer a { transition: color .3s; }
.footer a:hover { color: #fff; }
.footer-main { display: flex; justify-content: space-between; gap: .6rem; padding: .8rem 0 .7rem; }
.footer-brand { width: 3.6rem; flex-shrink: 0; }
.footer-logo img { height: .48rem; width: auto; }
.footer-slogan { margin-top: .22rem; line-height: 1.8; }
.footer-contact { margin-top: .3rem; display: flex; flex-direction: column; gap: .16rem; }
.footer-contact li, .footer-contact a { display: flex; align-items: flex-start; gap: .12rem; }
.footer-contact .ico { width: .36rem; height: .36rem; padding: .08rem; border-radius: 50%; background: rgba(255, 255, 255, .08); color: #fff; }
.footer-contact span { display: flex; flex-direction: column; color: #fff; font-size: .17rem; line-height: 1.4; }
.footer-contact em { font-style: normal; font-size: .13rem; color: rgba(255, 255, 255, .5); }
.footer-nav { flex: 1; display: flex; justify-content: center; gap: .6rem; }
.footer-title { color: #fff; font-size: .17rem; font-weight: 600; margin-bottom: .22rem; }
.footer-plus { display: none; }
.footer-links li { margin-bottom: .12rem; }
.footer-qr { flex-shrink: 0; width: 1.6rem; text-align: center; }
.footer-qr-img { padding: .1rem; border-radius: var(--radius); background: #fff; }
.footer-qr-img img { width: 100%; aspect-ratio: 1; object-fit: contain; }
.footer-qr-title { margin-top: .14rem; color: #fff; font-size: .15rem; }
.footer-qr-desc { font-size: .13rem; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); padding: .24rem 0; font-size: .14rem; color: rgba(255, 255, 255, .45); }
.footer-bottom .container { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .1rem .3rem; }
.footer-beian { display: flex; flex-wrap: wrap; gap: .1rem .3rem; }

/* 404 */
.page-404 { min-height: 70vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 1.6rem 0 1rem; }
.page-404 h1 { font-size: 1.6rem; line-height: 1; letter-spacing: .04rem; }
.page-404 p { margin: .2rem 0 .4rem; color: var(--c-text-3); font-size: .2rem; }

/* =========================================================
   平板 / 手机导航（≤1199px）
   ========================================================= */
@media (max-width: 1199px) {
  :root { --header-h: 1.2rem; }
  body { padding-top: var(--header-h); }
  body.header-solid .main { padding-top: 0; }
  .header, body.page-home .header { background: #fff !important; color: var(--c-text) !important; box-shadow: 0 1px 0 var(--c-line); }
  body.page-home .logo .logo-light { opacity: 0 !important; }
  body.page-home .logo .logo-dark { opacity: 1 !important; }
  .header-inner { width: 100%; max-width: 100%; padding: 0 .3rem; justify-content: center; }
  .logo { height: .56rem; }
  .nav-toggle { display: flex; flex-direction: column; justify-content: center; gap: .1rem; position: absolute; left: .3rem; top: 50%; transform: translateY(-50%); width: .5rem; height: .5rem; }
  .nav-toggle span { display: block; height: 2px; width: .44rem; background: var(--c-text); transition: all .3s; }
  .nav-open .nav-toggle span:nth-child(1) { transform: translateY(calc(.1rem + 2px)) rotate(45deg); }
  .nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
  .nav-open .nav-toggle span:nth-child(3) { transform: translateY(calc(-.1rem - 2px)) rotate(-45deg); }
  .mall-btn, body.page-home .mall-btn { position: absolute; right: .3rem; top: 50%; transform: translateY(-50%); width: .6rem; height: .6rem; padding: 0; justify-content: center; background: none !important; color: var(--c-primary) !important; }
  .mall-btn span { display: none; }
  .mall-btn .ico { font-size: .44rem; }
  .nav { position: fixed; left: 0; top: var(--header-h); width: 100%; height: calc(100% - var(--header-h)); margin: 0; background: #fff; overflow-y: auto; transform: translateX(-100%); transition: transform .4s var(--ease); display: block; }
  .nav-open .nav { transform: none; }
  .nav-list { display: block; height: auto; padding: 0 .4rem; }
  .nav-item { display: block; height: auto; border-bottom: 1px solid var(--c-line); }
  .nav-row { height: 1.1rem; justify-content: space-between; }
  .nav-link { font-size: .3rem; height: auto; }
  .nav-link::after { display: none; }
  .nav-plus { display: block; position: relative; width: .5rem; height: .5rem; }
  .nav-plus::before, .nav-plus::after { content: ""; position: absolute; left: 50%; top: 50%; width: .26rem; height: 2px; background: var(--c-text); transform: translate(-50%, -50%); transition: transform .3s; }
  .nav-plus::after { transform: translate(-50%, -50%) rotate(90deg); }
  .nav-item.open .nav-plus::after { transform: translate(-50%, -50%) rotate(0); }
  .drop { position: static; border-top: 0; box-shadow: none; background: none; }
  .drop-icons-inner { width: 100%; max-width: 100%; display: grid; grid-template-columns: repeat(4, 1fr); gap: .3rem .1rem; padding: .1rem 0 .4rem; background: none; box-shadow: none; border-radius: 0; }
  .drop-icon-item { font-size: .24rem; }
  .drop-icon-item .ico { width: .9rem; height: .9rem; padding: .22rem; }
  .mega { display: none; }
  .mega-mobile { display: block; padding-bottom: .3rem; }
  .mm-head { display: flex; align-items: center; justify-content: space-between; padding: .2rem 0; font-size: .28rem; }
  .mm-arrow { font-size: .32rem; transition: transform .3s; display: flex; }
  .mm-cat.open .mm-arrow { transform: rotate(180deg); }
  .mm-cat.open .mm-head a { color: var(--c-accent); }
  .mm-products { display: none; overflow-x: auto; white-space: nowrap; padding-bottom: .2rem; }
  .mm-product { display: inline-block; vertical-align: top; width: 2.4rem; margin-right: .2rem; padding: .16rem; border-radius: .14rem; background: var(--c-bg-gray); white-space: normal; text-align: center; font-size: .22rem; }
  .mm-product img { width: 100%; aspect-ratio: 1; object-fit: contain; margin-bottom: .1rem; }
  html.no-scroll, html.no-scroll body { overflow: hidden; }
  .subnav { position: sticky; top: var(--header-h); z-index: 50; }
  .subnav-wrap { width: 100%; max-width: 100%; min-height: 0; padding: 0 .3rem; }
  .crumb { display: none; }
  .subnav-inner { width: 100%; gap: .14rem; padding: .2rem 0; overflow-x: auto; white-space: nowrap; scrollbar-width: none; }
  .subnav-inner::-webkit-scrollbar { display: none; }
  .subnav-item { flex-shrink: 0; padding: .14rem .32rem; font-size: .26rem; background: var(--c-bg-gray); }
}

/* 平板（761~1199px）：页脚分两行，品牌 + 二维码在上，栏目在下 */
@media (min-width: 761px) and (max-width: 1199px) {
  .footer-main { flex-wrap: wrap; gap: .5rem .6rem; }
  .footer-brand { flex: 1; width: auto; }
  .footer-nav { order: 3; flex: 0 0 100%; justify-content: flex-start; flex-wrap: wrap; gap: .4rem .8rem; }
  .footer-title { white-space: nowrap; }
}

/* =========================================================
   手机内容（≤760px）
   ========================================================= */
@media (max-width: 760px) {
  .pc-show { display: none !important; }
  .wap-show { display: block !important; }
  body { font-size: .26rem; }
  .container, .container-sm { width: auto; max-width: none; margin: 0 .3rem; }
  .sec { padding: .9rem 0; }
  .sec-head { margin-bottom: .5rem; }
  .sec-title { font-size: .44rem; }
  .sec-sub { font-size: .26rem; margin-top: .16rem; }
  .btn-more { font-size: .26rem; }
  .btn-black { height: .8rem; padding: 0 .5rem; font-size: .28rem; }
  .btn-line { height: .76rem; font-size: .26rem; }
  .slide-btn { width: .7rem; height: .7rem; font-size: .3rem; }
  .play-btn { width: 1.2rem; height: 1.2rem; margin: -.6rem 0 0 -.6rem; font-size: .44rem; }
  .video-modal-close { right: 0; top: -.7rem; font-size: .44rem; width: .6rem; height: .6rem; }
  .toast { font-size: .28rem; padding: .24rem .4rem; }
  .back-top { width: .9rem; font-size: .2rem; right: .3rem; bottom: 1.6rem; }
  .back-top svg { width: .36rem; height: .36rem; }
  .inner-banner .swiper-pagination { bottom: .2rem !important; }
  .swiper-pagination-bullet { width: .14rem; height: .14rem; }
  .footer { font-size: .26rem; }
  .footer-main { flex-direction: column; padding: .6rem 0 .4rem; gap: .4rem; }
  .footer-brand { width: auto; }
  .footer-logo img { height: .64rem; }
  .footer-slogan { font-size: .24rem; }
  .footer-contact { gap: .24rem; }
  .footer-contact .ico { width: .6rem; height: .6rem; padding: .14rem; }
  .footer-contact span { font-size: .28rem; }
  .footer-contact em { font-size: .22rem; }
  .footer-nav { display: block; border-top: 1px solid rgba(255, 255, 255, .1); }
  .footer-group { border-bottom: 1px solid rgba(255, 255, 255, .1); }
  .footer-title { margin: 0; display: flex; justify-content: space-between; align-items: center; padding: .3rem 0; font-size: .28rem; }
  .footer-plus { display: block; position: relative; width: .4rem; height: .4rem; }
  .footer-plus::before, .footer-plus::after { content: ""; position: absolute; left: 50%; top: 50%; width: .22rem; height: 2px; background: #fff; transform: translate(-50%, -50%); transition: transform .3s; }
  .footer-plus::after { transform: translate(-50%, -50%) rotate(90deg); }
  .footer-group.open .footer-plus::after { transform: translate(-50%, -50%) rotate(0); }
  .footer-links { display: none; padding-bottom: .2rem; }
  .footer-links li { margin-bottom: .2rem; }
  .footer-qr { width: auto; display: flex; align-items: center; gap: .3rem; text-align: left; }
  .footer-qr-img { width: 1.8rem; flex-shrink: 0; }
  .footer-qr-title { margin: 0; font-size: .28rem; }
  .footer-qr-desc { font-size: .24rem; }
  .footer-bottom { font-size: .22rem; padding: .3rem 0; }
  .footer-bottom .container { flex-direction: column; }
  .page-404 h1 { font-size: 2rem; }
  .page-404 p { font-size: .28rem; }
}

/* 文案高亮：后台文本里用 **文字** 标记 */
em.hl { font-style: normal; color: var(--c-warm); }