/* ==========================================================
   {k1=g1} — 社交媒体数字服务商城 模板样式（黑白极简）
   ========================================================== */
:root{
  --black:#0d0d0d;
  --ink:#141414;
  --ink2:#454545;
  --ink3:#8a8a8a;
  --line:#e4e4e4;
  --line2:#cfcfcf;
  --soft:#f6f6f6;
  --white:#fff;
  --radius:2px;
  --container:1200px;
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);font-size:16px;line-height:1.75;
  color:var(--ink);background:var(--white);
}
img{max-width:100%;height:auto;vertical-align:middle}
a{color:inherit;text-decoration:none;transition:color .2s,background-color .2s,border-color .2s,opacity .2s}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--ink)}
p{margin:0}
button{font-family:inherit;cursor:pointer;background:none;border:0;color:inherit}
.inner{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;z-index:99;background:#fff;padding:8px 14px;border:1px solid var(--ink)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:46px;padding:0 26px;border:1px solid transparent;border-radius:var(--radius);
  font-size:14px;font-weight:600;letter-spacing:.02em;white-space:nowrap;
}
.btn-solid{background:var(--ink);color:#fff}
.btn-solid:hover{background:#000;opacity:.86}
.btn-line{background:transparent;color:var(--ink);border-color:var(--line2)}
.btn-line:hover{border-color:var(--ink);background:var(--ink);color:#fff}
.btn-wide{width:100%}

/* ---------- 章节标题 ---------- */
.sec-head{margin-bottom:40px;border-bottom:1px solid var(--line);padding-bottom:22px}
.sec-head h2{font-size:28px;letter-spacing:-.01em}
.sec-head p{margin-top:10px;font-size:14px;color:var(--ink3)}

/* ==========================================================
   头部导航
   ========================================================== */
.hd{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line)}
.hd-in{display:flex;align-items:center;justify-content:space-between;min-height:70px;gap:24px}
.hd-brand{
  font-size:20px;font-weight:700;letter-spacing:.01em;color:var(--ink);
  flex-shrink:0;padding-left:14px;border-left:3px solid var(--ink);line-height:1.4;
}
.hd-nav{display:flex;align-items:center;gap:26px;flex:1;justify-content:center}
.hd-a{font-size:15px;color:var(--ink2);position:relative;padding:4px 0}
.hd-a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;
  background:var(--ink);transition:width .25s;
}
.hd-a:hover,.hd-a.is-on{color:var(--ink)}
.hd-a:hover::after,.hd-a.is-on::after{width:100%}
.hd-right{display:flex;align-items:center;gap:16px;flex-shrink:0}
.hd-tel{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:.01em}
.hd-tel:hover{color:var(--ink3)}
.hd-btn{
  padding:10px 20px;background:var(--ink);color:#fff;
  font-size:14px;font-weight:600;border-radius:var(--radius);
}
.hd-btn:hover{opacity:.85}
.hd-menu{display:none;width:34px;height:34px;padding:7px 4px}
.hd-menu span{display:block;height:2px;background:var(--ink);margin:5px 0;transition:.25s}
.hd-menu.on span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.hd-menu.on span:nth-child(2){transform:translateY(-6.5px) rotate(-45deg)}

/* ==========================================================
   主视觉
   ========================================================== */
.banner-top{position:relative;background:var(--black);overflow:hidden}
.banner-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:grayscale(100%)}
.banner-veil{position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.92) 0%,rgba(0,0,0,.78) 48%,rgba(0,0,0,.42) 100%)}
.banner-in{position:relative;z-index:2;padding-top:84px;padding-bottom:84px;max-width:760px}
.banner-kicker{
  font-size:12px;letter-spacing:.24em;font-weight:700;color:#bdbdbd;
  text-transform:uppercase;margin-bottom:18px;
}
.banner-h1{font-size:46px;line-height:1.22;color:#fff;letter-spacing:-.01em}
.banner-sub{margin-top:22px;font-size:16px;line-height:1.9;color:rgba(255,255,255,.72);max-width:620px}
.banner-act{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:34px}
.banner-act .btn-solid{background:#fff;color:var(--ink)}
.banner-act .btn-solid:hover{background:#e6e6e6;opacity:1}
.banner-act .btn-line{color:#fff;border-color:rgba(255,255,255,.45)}
.banner-act .btn-line:hover{background:#fff;color:var(--ink);border-color:#fff}
.banner-tel{margin-left:6px;font-size:14px;color:rgba(255,255,255,.8);border-bottom:1px solid rgba(255,255,255,.35);padding-bottom:2px}
.banner-tel:hover{color:#fff;border-color:#fff}
.banner-facts{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  margin-top:48px;background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.18);
}
.banner-facts li{
  background:rgba(255,255,255,.04);padding:18px 20px;
  font-size:13px;color:rgba(255,255,255,.62);line-height:1.5;
}
.banner-facts b{display:block;font-size:24px;color:#fff;line-height:1.2;margin-bottom:4px}

/* ==========================================================
   服务优势
   ========================================================== */
.adv{padding:84px 0;background:#fff}
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
.adv-cell{
  padding:32px 26px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);
  transition:background-color .25s;background:#fff;
}
.adv-cell:hover{background:var(--soft)}
.adv-no{display:block;font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--ink3);margin-bottom:16px}
.adv-cell h3{font-size:18px}
.adv-cell p{margin-top:10px;font-size:14px;color:var(--ink3);line-height:1.8}

/* ==========================================================
   关于我们
   ========================================================== */
.about{padding:84px 0;background:var(--soft)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.about-pic img{width:100%;display:block;aspect-ratio:4/3;object-fit:cover;filter:grayscale(100%)}
.about-txt h2{font-size:28px}
.about-txt > p{margin-top:18px;font-size:15px;color:var(--ink2);line-height:1.95}
.about-list{margin:26px 0;border-top:1px solid var(--line2);border-bottom:1px solid var(--line2)}
.about-list li{
  padding:12px 0 12px 18px;font-size:14px;color:var(--ink2);
  border-bottom:1px dashed var(--line2);position:relative;
}
.about-list li:last-child{border-bottom:0}
.about-list li::before{
  content:"";position:absolute;left:0;top:21px;width:6px;height:6px;background:var(--ink);
}

/* ==========================================================
   平台分类
   ========================================================== */
.plat{padding:84px 0;background:#fff}
.plat-rows{border-top:1px solid var(--line)}
.plat-row{
  display:grid;grid-template-columns:56px 160px 1fr 100px;
  align-items:center;gap:22px;padding:24px 18px;
  border-bottom:1px solid var(--line);transition:background-color .25s,padding .25s;
}
.plat-row:hover{background:var(--ink);padding-left:26px}
.plat-row:hover *{color:#fff}
.plat-n{font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--ink3)}
.plat-row h3{font-size:19px}
.plat-row p{font-size:14px;color:var(--ink3);line-height:1.7}
.plat-go{font-size:13px;font-weight:600;color:var(--ink2);text-align:right;white-space:nowrap}

/* ==========================================================
   服务中心
   ========================================================== */
.svc{padding:84px 0;background:var(--soft)}
.svc-tabs{
  display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;
}
.svc-tab{
  padding:8px 18px;font-size:14px;border:1px solid var(--line2);
  background:#fff;color:var(--ink2);border-radius:999px;
}
.svc-tab.is-on{background:var(--ink);color:#fff;border-color:var(--ink)}

.spec-wrap{background:#fff;border:1px solid var(--line);overflow-x:auto}
.spec-table{width:100%;border-collapse:collapse;min-width:860px;font-size:14px}
.spec-table caption{
  caption-side:top;text-align:left;padding:20px 22px;font-size:15px;font-weight:700;
  color:var(--ink);border-bottom:1px solid var(--line);
}
.spec-table th,.spec-table td{
  padding:15px 18px;text-align:left;border-bottom:1px solid var(--line);
  vertical-align:top;line-height:1.7;color:var(--ink2);
}
.spec-table thead th{
  background:var(--ink);color:#fff;font-weight:600;font-size:13px;letter-spacing:.04em;white-space:nowrap;
}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table tbody tr:hover td{background:#fafafa}
.spec-table td:first-child{font-weight:700;color:var(--ink)}

.svc-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin-top:32px;background:var(--line);border:1px solid var(--line)}
.svc-card{
  background:#fff;padding:34px 28px;display:flex;flex-direction:column;
}
.svc-card-top{background:var(--ink)}
.svc-card-top h3,.svc-card-top .svc-price{color:#fff}
.svc-card-top .svc-for,.svc-card-top li{color:rgba(255,255,255,.7)}
.svc-card-top .btn-solid{background:#fff;color:var(--ink)}
.svc-card h3{font-size:20px}
.svc-for{margin-top:8px;font-size:13px;color:var(--ink3)}
.svc-card ul{margin:22px 0;padding:22px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);flex:1}
.svc-card-top ul{border-color:rgba(255,255,255,.2)}
.svc-card li{position:relative;padding-left:18px;font-size:14px;color:var(--ink2);line-height:1.7;margin-bottom:12px}
.svc-card li:last-child{margin-bottom:0}
.svc-card li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:1px;background:currentColor}
.svc-card-top li::before{background:rgba(255,255,255,.7)}
.svc-price{display:block;font-size:20px;font-weight:700;color:var(--ink);margin-bottom:16px}
.svc-note{margin-top:28px;font-size:13px;color:var(--ink3);text-align:center}

/* ==========================================================
   服务流程
   ========================================================== */
.proc{padding:84px 0;background:#fff}
.proc-list{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.proc-step{
  padding:32px 24px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);
}
.proc-step:first-child{border-left:1px solid var(--line)}
.proc-i{
  display:block;font-size:34px;font-weight:700;color:var(--line2);line-height:1;margin-bottom:18px;
  letter-spacing:-.02em;
}
.proc-step h3{font-size:17px}
.proc-step p{margin-top:10px;font-size:14px;color:var(--ink3);line-height:1.8}

/* ==========================================================
   服务说明与保障
   ========================================================== */
.rule{padding:84px 0;background:var(--soft)}
.rule-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.rule-cell{background:#fff;padding:28px 24px}
.rule-cell h3{font-size:16px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.rule-cell p{margin-top:14px;font-size:14px;color:var(--ink3);line-height:1.8}

/* ==========================================================
   营销资讯
   ========================================================== */
.news{padding:84px 0;background:#fff}

/* 系统资讯列表：基础网格规则（不可改动） */
ul.article-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
  box-sizing: border-box;
}
ul.article-cards > li.article-card {
  min-width: 0;
  width: auto;
  max-width: none;
  margin: 0;
  float: none;
  box-sizing: border-box;
}
.article-card .card-thumb {
  width: 100%;
  overflow: hidden;
}
.article-card .card-thumb img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.article-card .card-title {
  overflow-wrap: anywhere;
}
.article-card .card-date {
  display: block;
}
.article-card .card-summary {
  overflow-wrap: anywhere;
}
/* 卡片外观（仅增强，不改变布局规则） */
ul.article-cards > li.article-card{
  background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;
  transition:border-color .25s;
}
ul.article-cards > li.article-card:hover{border-color:var(--ink)}
.article-card .card-thumb{aspect-ratio:16/10;background:var(--soft);flex-shrink:0}
.article-card .card-thumb img{height:100%;filter:grayscale(100%);transition:filter .3s}
ul.article-cards > li.article-card:hover .card-thumb img{filter:grayscale(0)}
.article-card .card-title{
  padding:18px 20px 0;font-size:16px;line-height:1.55;font-weight:700;color:var(--ink);
}
.article-card .card-date{padding:10px 20px 0;font-size:12px;color:var(--ink3);letter-spacing:.02em}
.article-card .card-summary{padding:10px 20px 22px;font-size:14px;color:var(--ink3);line-height:1.75;flex:1}

/* ==========================================================
   常见问题
   ========================================================== */
.faq{padding:84px 0;background:var(--soft)}
.faq-list{max-width:920px;margin:0 auto;border-top:1px solid var(--line2)}
.faq-item{background:#fff;border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-q i{
  flex-shrink:0;position:relative;width:14px;height:14px;
}
.faq-q i::before,.faq-q i::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);
  transform:translate(-50%,-50%);
}
.faq-q i::before{width:14px;height:1.5px}
.faq-q i::after{width:1.5px;height:14px;transition:transform .25s}
.faq-item.on .faq-q i::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 20px;font-size:14px;color:var(--ink3);line-height:1.85;max-width:800px}

/* ==========================================================
   在线申请
   ========================================================== */
.sub{padding:84px 0;background:var(--ink);color:#fff}
.sub-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:56px;align-items:start}
.sub-txt h2{font-size:30px;color:#fff}
.sub-txt > p{margin-top:18px;font-size:15px;color:rgba(255,255,255,.7);line-height:1.9}
.sub-info{margin-top:30px;border-top:1px solid rgba(255,255,255,.18)}
.sub-info li{padding:14px 0;font-size:14px;color:rgba(255,255,255,.72);border-bottom:1px solid rgba(255,255,255,.12)}
.sub-info a{color:#fff;font-weight:700}
.sub-info a:hover{border-bottom:1px solid #fff}

.sub-form{background:#fff;padding:34px 30px}
.fgrid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.fitem{display:flex;flex-direction:column;margin-bottom:18px}
.fitem label{font-size:13px;font-weight:600;color:var(--ink2);margin-bottom:8px}
.fitem input,.fitem select,.fitem textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line2);border-radius:var(--radius);
  font-family:inherit;font-size:14px;color:var(--ink);background:#fff;
  transition:border-color .2s;
}
.fitem textarea{resize:vertical;line-height:1.7}
.fitem input:focus,.fitem select:focus,.fitem textarea:focus{outline:none;border-color:var(--ink)}
.fitem input.err,.fitem select.err{border-color:#111;background:#f2f2f2}
.sub-tip{margin-top:14px;font-size:12px;color:var(--ink3);text-align:center}

/* ==========================================================
   文章详情
   ========================================================== */
.art{background:#fff}
.art-head{padding:56px 0 38px;background:var(--soft);border-bottom:1px solid var(--line)}
.crumb{font-size:13px;color:var(--ink3);margin-bottom:20px}
.crumb a{color:var(--ink);border-bottom:1px solid var(--line2)}
.crumb a:hover{border-color:var(--ink)}
.art-title{font-size:32px;line-height:1.4;max-width:920px;letter-spacing:-.01em}
.art-meta{display:flex;align-items:center;gap:18px;margin-top:20px;font-size:13px;color:var(--ink3)}
.art-date{color:var(--ink);font-weight:600}
.art-tag{padding:3px 12px;border:1px solid var(--line2);color:var(--ink2)}

.art-grid{display:grid;grid-template-columns:1fr 320px;gap:52px;padding-top:48px;padding-bottom:72px;align-items:start}
.art-main{min-width:0}
.art-lead{
  padding:24px 26px;background:var(--soft);border-left:3px solid var(--ink);
  font-size:15px;color:var(--ink2);line-height:1.95;
}
.art-figure{margin:32px 0 0}
.art-figure img{width:100%;display:block}
.art-body{margin-top:36px;font-size:16px;line-height:2.05;color:var(--ink2);overflow-wrap:break-word}
.art-body p{margin:0 0 20px}
.art-body h2{font-size:24px;margin:40px 0 16px;padding-bottom:12px;border-bottom:2px solid var(--ink)}
.art-body h3{font-size:19px;margin:30px 0 12px;padding-left:12px;border-left:3px solid var(--ink)}
.art-body h4{font-size:17px;margin:24px 0 10px}
.art-body img{display:block;max-width:100%;height:auto;margin:26px auto}
.art-body a{color:var(--ink);border-bottom:1px solid var(--line2)}
.art-body a:hover{border-color:var(--ink)}
.art-body ul,.art-body ol{margin:0 0 20px;padding-left:24px}
.art-body ul li{list-style:disc;margin-bottom:10px}
.art-body ol li{list-style:decimal;margin-bottom:10px}
.art-body blockquote{
  margin:26px 0;padding:18px 24px;background:var(--soft);
  border-left:3px solid var(--ink);color:var(--ink2);font-size:15px;
}
.art-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:14px}
.art-body th,.art-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.art-body th{background:var(--soft);font-weight:700;color:var(--ink)}
.art-foot{display:flex;flex-wrap:wrap;gap:14px;margin-top:46px;padding-top:30px;border-top:1px solid var(--line)}

.art-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:22px}
.aside-box{border:1px solid var(--line);padding:24px 22px;background:#fff}
.aside-box h3{font-size:17px;padding-bottom:14px;margin-bottom:16px;border-bottom:2px solid var(--ink)}
.aside-nav li{border-bottom:1px dashed var(--line)}
.aside-nav li:last-child{border-bottom:0}
.aside-nav a{display:block;padding:9px 0;font-size:14px;color:var(--ink2)}
.aside-nav a:hover{color:var(--ink);padding-left:6px}
.aside-cta{background:var(--soft)}
.aside-cta p{font-size:13px;color:var(--ink3);line-height:1.75;margin-bottom:18px}
.aside-tel{display:block;margin-top:14px;text-align:center;font-size:17px;font-weight:700;color:var(--ink)}

/* 页脚前转化区 */
.conv{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.conv-in{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;padding-top:42px;padding-bottom:42px}
.conv-txt h2{font-size:24px}
.conv-txt p{margin-top:10px;font-size:14px;color:var(--ink3);max-width:640px;line-height:1.8}
.conv-act{display:flex;gap:14px;flex-shrink:0}

/* ==========================================================
   页脚
   ========================================================== */
.ft{background:var(--black);color:rgba(255,255,255,.7)}
.ft-top{
  display:grid;grid-template-columns:1.3fr 2.4fr;gap:56px;
  padding-top:64px;padding-bottom:48px;
}
.ft-logo{font-size:20px;font-weight:700;color:#fff;padding-left:14px;border-left:3px solid #fff;line-height:1.4}
.ft-brand p{margin-top:18px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.55)}
.ft-tel{display:inline-block;margin-top:20px;font-size:22px;font-weight:700;color:#fff}
.ft-tel:hover{opacity:.75}
.ft-nav{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.ft-col h4{font-size:14px;color:#fff;margin-bottom:18px;letter-spacing:.04em}
.ft-col li{margin-bottom:11px}
.ft-col a{font-size:13px;color:rgba(255,255,255,.6)}
.ft-col a:hover{color:#fff}
.ft-link{
  display:flex;gap:18px;flex-wrap:wrap;align-items:flex-start;
  padding:22px 0;border-top:1px solid rgba(255,255,255,.12);
}
.ft-link > span{font-size:13px;color:rgba(255,255,255,.4);flex-shrink:0;line-height:2}
.ft-link-list{display:flex;flex-wrap:wrap;gap:8px 20px}
.ft-link-list a{font-size:13px;color:rgba(255,255,255,.58)}
.ft-link-list a:hover{color:#fff}
.ft-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 26px;border-top:1px solid rgba(255,255,255,.12);
}
.ft-bottom p{font-size:13px;color:rgba(255,255,255,.45)}
.ft-legal{display:flex;gap:18px;flex-wrap:wrap}
.ft-legal a{color:rgba(255,255,255,.5)}
.ft-legal a:hover{color:#fff}

/* ==========================================================
   侧边工具
   ========================================================== */
.aside-tools{position:fixed;right:22px;bottom:28px;z-index:50;display:flex;flex-direction:column;border:1px solid var(--line2);background:#fff}
.tool{
  display:flex;align-items:center;justify-content:center;
  width:44px;height:44px;font-size:16px;color:var(--ink);
  border-bottom:1px solid var(--line2);
}
.tool:last-child{border-bottom:0}
.tool:hover{background:var(--ink);color:#fff}
#toolTop{opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s}
#toolTop.show{opacity:1;visibility:visible}

/* ==========================================================
   渐入动效
   ========================================================== */
.rise{opacity:0;transform:translateY(20px);transition:opacity .55s ease,transform .55s ease}
.rise.in{opacity:1;transform:none}

/* ==========================================================
   响应式
   ========================================================== */
@media (max-width:1080px){
  .hd-nav{gap:18px}
  .hd-a{font-size:14px}
  .about-grid{grid-template-columns:1fr;gap:38px}
  .art-grid{grid-template-columns:1fr;gap:36px}
  .art-aside{position:static}
  .ft-top{grid-template-columns:1fr;gap:40px}
  .banner-h1{font-size:38px}
}
@media (max-width:900px){
  .hd-menu{display:block}
  .hd-nav{
    position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;
    gap:0;background:#fff;border-bottom:1px solid var(--line);
    max-height:0;overflow:hidden;transition:max-height .3s ease;
    box-shadow:0 12px 28px rgba(0,0,0,.08);
  }
  .hd-nav.open{max-height:520px}
  .hd-a{padding:15px 24px;border-bottom:1px solid var(--line)}
  .hd-a::after{display:none}
  .adv-grid{grid-template-columns:1fr 1fr}
  .svc-cards{grid-template-columns:1fr}
  .proc-list{grid-template-columns:1fr 1fr}
  .rule-grid{grid-template-columns:1fr 1fr}
  .sub-grid{grid-template-columns:1fr;gap:36px}
  .banner-facts{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .inner{padding:0 18px}
  .adv,.about,.plat,.svc,.proc,.rule,.news,.faq,.sub{padding:58px 0}
  .sec-head{margin-bottom:30px;padding-bottom:18px}
  .sec-head h2{font-size:23px}
  .hd-tel{display:none}
  .banner-in{padding-top:54px;padding-bottom:54px}
  .banner-h1{font-size:28px}
  .banner-sub{font-size:15px}
  .banner-facts{grid-template-columns:1fr 1fr;margin-top:34px}
  .adv-grid,.proc-list,.rule-grid{grid-template-columns:1fr}
  .proc-step{border-left:1px solid var(--line)}
  .plat-row{grid-template-columns:44px 1fr;gap:12px;row-gap:6px;padding:20px 12px}
  .plat-row p{grid-column:2}
  .plat-go{grid-column:2;text-align:left}
  .svc-card{padding:28px 22px}
  .art-head{padding:36px 0 26px}
  .art-title{font-size:23px}
  .art-grid{padding-top:32px;padding-bottom:48px}
  .sub-txt h2{font-size:24px}
  .fgrid{grid-template-columns:1fr;gap:0}
  .sub-form{padding:26px 20px}
  .ft-nav{grid-template-columns:1fr 1fr}
  .ft-bottom{flex-direction:column;align-items:flex-start}
  .aside-tools{right:12px;bottom:16px}
  .tool{width:40px;height:40px}
  .conv-act{width:100%}
}

/* ==========================================================
   减弱动效
   ========================================================== */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .rise{opacity:1;transform:none}
}