/* ============================================================
   光弘铭科技 官网 - 样式表
   基于东软风格复刻，调整为软件定制开发公司定位
   配色: 东软蓝 #005bac / 亮青 #06b4ea
   ============================================================ */
:root{
  --blue:#005bac;
  --blue-d:#004a8d;
  --cyan:#06b4ea;
  --ink:#353a44;
  --ink-2:#4b4f52;
  --muted:#8a9099;
  --line:#e3e7ea;
  --bg:#f6f6f6;
  --bg-2:#f3f3f3;
  --white:#fff;
  --maxw:1240px;
  --radius:6px;
  --shadow:0 6px 24px rgba(20,40,70,.08);
  --shadow-h:0 12px 36px rgba(0,91,172,.18);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:var(--white);
  line-height:1.7;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section-head{margin-bottom:38px}
.section-head .eyebrow{
  display:inline-block;color:var(--cyan);font-size:13px;font-weight:600;
  letter-spacing:2px;margin-bottom:10px;text-transform:uppercase;
}
.section-head h2{font-size:30px;font-weight:700;color:var(--ink);letter-spacing:.5px}
.section-head p{color:var(--muted);margin-top:8px;font-size:15px}
.btn{display:inline-flex;align-items:center;gap:6px;padding:11px 22px;border-radius:var(--radius);font-weight:600;font-size:14px;transition:.25s;border:1px solid transparent;cursor:pointer}
.btn-blue{background:var(--blue);color:#fff}
.btn-blue:hover{background:var(--blue-d);box-shadow:var(--shadow-h)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-ghost:hover{background:#fff;color:var(--blue)}
.btn-line{color:var(--blue);border:1px solid var(--line);background:#fff}
.btn-line:hover{border-color:var(--blue)}

/* ---------- 主导航（白底深字，恢复简洁样式） ---------- */
.header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
/* 2026-10-10 导航靠左贴近 logo：父级左对齐，CTA 用 margin-left:auto 单独推到右侧
   （原来 space-between 会把中间的 menu 均摊到正中，靠改 .menu 本身没用） */
.nav{display:flex;align-items:center;justify-content:flex-start;height:60px;gap:22px}
.logo{display:flex;align-items:center;flex-shrink:0;margin-left:-18px}
.logo-img{height:26px;width:auto;flex-shrink:0}
/* 2026-10-10 用户指令：导航靠左贴近 logo（原 flex:1+居中 会把 4 项推到版心中部） */
.menu{display:flex;align-items:center;justify-content:flex-start;gap:0;list-style:none;flex:0 0 auto}
.menu a{font-size:17px !important;font-weight:600;color:var(--ink);position:relative;padding:20px 18px !important;transition:.2s;white-space:nowrap;line-height:1}
.menu a::after{content:"";position:absolute;left:50%;bottom:8px;width:36px;height:2px;background:var(--blue);border-radius:1px;transform:translateX(-50%) scaleX(0);transform-origin:center;transition:transform .25s}
.menu a:hover{color:var(--blue)}
.menu a:hover::after{transform:translateX(-50%) scaleX(1)}
.menu a.active{color:var(--blue);font-weight:600}
.menu a.active::after{transform:translateX(-50%) scaleX(1)}
.has-dropdown{position:relative}
.has-dropdown>a{display:flex;align-items:center;gap:4px}
.has-dropdown .caret{font-size:10px;transition:transform .2s;display:inline-block}
.has-dropdown:hover .caret{transform:rotate(180deg)}
.has-dropdown:hover>a{color:var(--blue)}
.has-dropdown:hover>a::after{transform:scaleX(1)}
.dropdown{position:absolute;top:100%;left:50%;transform:translate(-50%,8px);width:380px;max-width:92vw;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 16px 40px rgba(20,40,70,.18);padding:12px;display:grid;grid-template-columns:1fr;gap:2px;opacity:0;visibility:hidden;transition:.2s;z-index:60}
.has-dropdown:hover .dropdown{opacity:1;visibility:visible;transform:translate(-50%,0)}
.dropdown a{display:flex;align-items:flex-start;gap:10px;padding:12px 14px;border-radius:6px;font-size:14px;color:var(--ink);transition:.2s;line-height:1.5}
.dropdown a::after{display:none}
.dropdown a:hover{background:#f6f6f6;color:var(--blue)}
.dropdown a b{font-size:13px;color:var(--blue);font-weight:700;letter-spacing:.5px;flex-shrink:0;line-height:1.5;padding-top:1px}
.dropdown a span{font-size:13px;color:var(--muted);line-height:1.5}
.dropdown a.active{background:#eef5fc;color:var(--blue)}
.nav-cta{display:flex;align-items:center;gap:14px;flex-shrink:0;margin-left:auto}
.nav-cta .btn{padding:10px 20px;font-size:14px}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.burger span{width:24px;height:2px;background:var(--ink);transition:.3s}

/* ---------- 首屏新闻轮播（全屏 hero，导航栏覆盖于其上） ---------- */
.hero{position:relative;height:95vh;min-height:560px;overflow:hidden;background:var(--ink)}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .8s ease;display:flex;align-items:center;padding-top:70px}
.slide.active{opacity:1}
.slide .bg{position:absolute;inset:0;background-size:cover;background-position:center}
.slide .bg img{width:100%;height:100%;object-fit:cover;display:block}
.slide::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,24,48,.97) 0%,rgba(8,24,48,.88) 22%,rgba(8,24,48,.38) 46%,rgba(8,24,48,0) 68%)}
/* 提亮层（2026-09-23）：右侧 68% 之后遮罩已经是全透明，再要"亮"就只能把图本身提起来。
   用 screen 混合 + 极低的 alpha（最高 .10），只把暗部往上抬一点，
   不会像叠白那样把画面洗灰。移动端不启用 —— 那边文字占满屏宽，需要的是对比度。
   ⚠️ 必须挂在 .bg::after 而不是 .slide::before：::before 是 .slide 的第一个子元素，
   会被后面的 .bg（图片层）整个盖住，实测提亮量为 0。 */
.slide .bg::after{content:"";position:absolute;inset:0;pointer-events:none;mix-blend-mode:screen;background:linear-gradient(90deg,rgba(198,228,255,0) 40%,rgba(198,228,255,.06) 70%,rgba(198,228,255,.10) 100%)}
/* Banner 方案C：极慢推镜 + 物体辉光（遮罩贴合图中实体） */
.slide .bg img{transform-origin:62% 48%}
.slide.active .bg img{animation:kbPush 26s ease-in-out infinite alternate}
@keyframes kbPush{
  0%{transform:scale(1) translate(0,0)}
  100%{transform:scale(1.085) translate(-1.4%,-1%)}
}
.slide .rim{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  mix-blend-mode:screen;opacity:0;transition:opacity 1.4s ease;
  -webkit-mask-image:var(--m);mask-image:var(--m);
  -webkit-mask-size:cover;mask-size:cover;
  -webkit-mask-position:center;mask-position:center;
  -webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;
  background:linear-gradient(155deg,rgba(6,180,234,.32) 0%,rgba(6,180,234,0) 38%,rgba(150,232,255,.30) 74%,rgba(6,180,234,0) 100%);
  background-size:220% 220%;
}
.slide.active .rim{opacity:.32;animation:rimShift 15s ease-in-out .8s infinite alternate}
@keyframes rimShift{
  0%{background-position:0% 0%;opacity:.28}
  100%{background-position:100% 100%;opacity:.6}
}
.slide .wrap{position:relative;z-index:2;width:100%}
.slide .tag{display:inline-block;background:var(--cyan);color:#fff;font-size:12px;font-weight:600;padding:4px 12px;border-radius:3px;margin-bottom:18px}
/* .slide h2 是给 SEO 用的：轮播第 2-6 张的标题标成了 <h2>，
   这样首页只剩 1 个 <h1>（之前 6 个 h1 把主题信号稀释成 6 份）。
   两处规则必须一起改，否则第 2-6 张标题字号会掉。 */
.slide h1,.slide h2{color:#fff;font-size:42px;line-height:1.25;font-weight:700;max-width:1100px;letter-spacing:.5px;white-space:nowrap}
.slide p{color:rgba(255,255,255,.82);font-size:16px;max-width:620px;margin:18px 0 26px}
.bg1{background:radial-gradient(circle at 70% 30%,#0a3a6b,#04162e),linear-gradient(135deg,#005bac,#06b4ea)}
.bg2{background:radial-gradient(circle at 75% 40%,#0d4f7a,#06203f),linear-gradient(135deg,#0072a3,#06b4ea)}
.bg3{background:radial-gradient(circle at 65% 35%,#103a5e,#05182f),linear-gradient(135deg,#005bac,#3aa0d6)}
/* ---------- 首屏氛围层：低饱和渐变 + 柔和弥散光晕（静态为主，极慢浮动） ---------- */
.hero-amb{
  position:absolute;inset:0;z-index:1;pointer-events:none;overflow:hidden;
  background:linear-gradient(155deg,rgba(11,27,47,.62) 0%,rgba(18,35,56,.34) 48%,rgba(10,23,40,.56) 100%);
}
/* 两处边角弥散光：42s / 52s 超慢循环，位移幅度仅 30px 左右，不抢视线 */
.hero-amb::before,.hero-amb::after{
  content:"";position:absolute;border-radius:50%;filter:blur(90px);will-change:transform;
}
.hero-amb::before{
  width:520px;height:520px;left:-170px;top:-190px;
  background:radial-gradient(circle,rgba(6,180,234,.17),transparent 68%);
  animation:ambDrift1 42s ease-in-out infinite;
}
.hero-amb::after{
  width:580px;height:580px;right:-190px;bottom:-210px;
  background:radial-gradient(circle,rgba(0,110,200,.19),transparent 68%);
  animation:ambDrift2 52s ease-in-out infinite;
}
@keyframes ambDrift1{
  0%,100%{transform:translate(0,0) scale(1)}
  50%{transform:translate(34px,24px) scale(1.07)}
}
@keyframes ambDrift2{
  0%,100%{transform:translate(0,0) scale(1)}
  50%{transform:translate(-30px,-20px) scale(1.05)}
}
/* 淡网格线：径向遮罩四周淡出，中央可见，不干扰文字 */
.hero-grid{
  position:absolute;inset:0;z-index:1;pointer-events:none;opacity:.075;
  background-image:linear-gradient(rgba(196,228,255,.95) 1px,transparent 1px),linear-gradient(90deg,rgba(196,228,255,.95) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse 78% 72% at 50% 46%,#000 22%,transparent 80%);
  mask-image:radial-gradient(ellipse 78% 72% at 50% 46%,#000 22%,transparent 80%);
}
.hero-controls{position:absolute;bottom:34px;left:0;right:0;z-index:5}
.hero-controls .wrap{display:flex;align-items:center;justify-content:space-between}
.dots{display:flex;gap:10px}
.dots button{width:30px;height:4px;border:none;background:rgba(255,255,255,.35);cursor:pointer;border-radius:2px;transition:.3s;padding:0}
.dots button.active{background:var(--cyan);width:46px}
.counter{color:#fff;font-size:14px;font-weight:600}
.counter b{font-size:22px}
.arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:46px;height:46px;border-radius:50%;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:.25s;font-size:20px}
.arrow:hover{background:var(--blue)}
.arrow.prev{left:24px}
.arrow.next{right:24px}

/* ---------- 业务领域 / 定制服务 ---------- */
.biz-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.sys-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.biz-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;transition:.3s;position:relative;overflow:hidden}
.biz-card::before{content:"";position:absolute;left:0;top:0;width:4px;height:0;background:var(--blue);transition:.3s}
.biz-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.biz-card:hover::before{height:100%}
.biz-card .ic{width:52px;height:52px;border-radius:12px;background:linear-gradient(135deg,#eef5fc,#e2f4fb);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.biz-card .ic svg{width:28px;height:28px;stroke:var(--blue)}
.biz-card h3{font-size:18px;margin-bottom:10px;color:var(--ink)}
.biz-card p{color:var(--muted);font-size:13.5px;line-height:1.7}
.biz-card .more{display:inline-block;margin-top:14px;color:var(--blue);font-size:13px;font-weight:600}

/* ---------- 数智创新 / 案例 ---------- */
.innov{background:var(--bg)}
.innov-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.innov-card{border-radius:10px;overflow:hidden;background:#fff;box-shadow:var(--shadow);display:flex;flex-direction:column}
.innov-card .pic{height:200px;background:linear-gradient(135deg,var(--blue),var(--cyan));position:relative;display:flex;align-items:center;justify-content:center}
.innov-card .pic svg{width:90px;height:90px;stroke:#fff;opacity:.92}
.innov-card .body{padding:28px 30px}
.innov-card .body h3{font-size:21px;margin-bottom:10px}
.innov-card .body p{color:var(--ink-2);font-size:14px}
.innov-card .body a{display:inline-block;margin-top:16px;color:var(--blue);font-weight:600}

/* ---------- 行业应用 / 企业应用 / 案例 ---------- */
.cols-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.app-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:.3s}
.app-card:hover{box-shadow:var(--shadow);border-color:transparent;transform:translateY(-4px)}
.app-card .kicker{color:var(--cyan);font-size:12px;font-weight:700;letter-spacing:1px}
.app-card h3{font-size:19px;margin:10px 0 12px}
.app-card p{color:var(--muted);font-size:13.5px;min-height:60px}
.app-card a{color:var(--blue);font-weight:600;font-size:14px}

/* ---------- 开发流程 ---------- */
.process{display:flex;justify-content:space-between;gap:18px;position:relative}
.process::before{content:"";position:absolute;top:36px;left:8%;right:8%;height:2px;background:var(--line);z-index:0}
.process-step{position:relative;z-index:1;flex:1;text-align:center;background:#fff;padding:24px 14px;border-radius:var(--radius);border:1px solid var(--line);transition:.3s}
.process-step:hover{border-color:var(--blue);box-shadow:var(--shadow);transform:translateY(-4px)}
.process-step .num{width:54px;height:54px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;margin:0 auto 16px}
.process-step h4{font-size:16px;margin-bottom:8px}
.process-step p{color:var(--muted);font-size:13px;line-height:1.6}

/* ---------- 核心优势 ---------- */
.insight{background:var(--ink);color:#fff}
.insight .section-head h2{color:#fff}
.insight .section-head p{color:rgba(255,255,255,.6)}
.paper-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.paper{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:26px;transition:.3s;display:flex;flex-direction:column;min-height:190px}
.paper:hover{background:rgba(6,180,234,.12);border-color:var(--cyan)}
.paper .tag{display:inline-block;font-size:11px;color:var(--cyan);letter-spacing:1px;margin-bottom:12px}
.paper h4{font-size:17px;margin-bottom:10px;font-weight:600;line-height:1.5}
.paper p{color:rgba(255,255,255,.72);font-size:13.5px;line-height:1.7}
.center-btn{text-align:center;margin-top:36px}

/* ---------- 常见问题 ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-bottom:10px}
.faq-q{width:100%;text-align:left;padding:18px 22px;font-size:15px;font-weight:600;color:var(--ink);background:#fff;border:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:.2s}
.faq-q:hover{color:var(--blue)}
.faq-q span{font-size:20px;color:var(--blue);font-weight:300}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 22px 18px;color:var(--ink-2);font-size:14px;line-height:1.8}
.faq-item.open .faq-a{max-height:600px}

/* ---------- 关于我们 ---------- */
.about-wrap{display:flex;gap:60px;align-items:center}
.about-text{flex:1.2}
.about-text p{color:var(--ink-2);margin-bottom:16px;font-size:15px}
.about-stats{flex:1;display:grid;grid-template-columns:1fr 1fr;gap:20px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;text-align:center;transition:.3s}
.stat:hover{box-shadow:var(--shadow);border-color:transparent;transform:translateY(-4px)}
.stat b{display:block;font-size:32px;color:var(--blue);margin-bottom:6px}
.stat span{color:var(--muted);font-size:13px}

/* ---------- 联系咨询 ---------- */
.contact{background:linear-gradient(120deg,#04162e,#0a3a6b);color:#fff;position:relative;overflow:hidden}
.contact::before{content:"";position:absolute;inset:0;opacity:.1;background-image:linear-gradient(#fff 1px,transparent 1px),linear-gradient(90deg,#fff 1px,transparent 1px);background-size:50px 50px}
.contact-wrap{position:relative;z-index:2;display:flex;gap:50px;align-items:flex-start}
.contact-info{flex:1}
.contact-info p{color:rgba(255,255,255,.78);margin:14px 0 24px}
.contact-info ul{list-style:none}
.contact-info li{margin-bottom:14px;color:rgba(255,255,255,.85);font-size:15px}
.contact-info li strong{display:inline-block;width:80px;color:#fff}
.contact-form{flex:1;background:#fff;border-radius:12px;padding:34px;box-shadow:var(--shadow)}
.contact-form h3{font-size:20px;margin-bottom:22px;color:var(--ink)}
.contact-form input,.contact-form select,.contact-form textarea{width:100%;padding:12px 14px;margin-bottom:14px;border:1px solid var(--line);border-radius:var(--radius);font-size:14px;color:var(--ink);font-family:inherit}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:none;border-color:var(--blue)}
.contact-form textarea{resize:vertical}
.form-row{display:flex;gap:14px}
.form-row input{flex:1}

/* ---------- 页脚 ---------- */
.footer{background:#1c2128;color:#aeb4bc;padding:56px 0 26px;font-size:14px}
.footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
.footer .brand .logo-text b{color:#fff}
.footer .brand .logo-text span{color:#8b9199}
.footer .brand .footer-brand-name{display:inline-block;color:#fff;font-size:24px;font-weight:700;letter-spacing:1px;margin-bottom:6px;text-decoration:none}
.footer .brand .footer-brand-name:hover{color:var(--cyan)}
.footer .brand p{margin:18px 0;max-width:280px;line-height:1.7;color:#8b9199}
.footer h5{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.footer ul{list-style:none}
.footer ul li{margin-bottom:11px}
.footer ul li a{color:#aeb4bc;transition:.2s}
.footer ul li a:hover{color:var(--cyan)}
.footer .bottom{border-top:1px solid rgba(255,255,255,.08);margin-top:40px;padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:12.5px;color:#7c828a}
.footer .bottom a{color:#8b97a3;text-decoration:none;transition:.2s}
.footer .bottom a:hover{color:#06b4ea;text-decoration:underline}

/* ---------- 探索更多（首页） ---------- */
.explore-sec{background:linear-gradient(180deg,#f6f9fc 0%,#fff 100%)}
.explore-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.explore-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:28px 22px;text-align:center;transition:.3s;display:flex;flex-direction:column}
.explore-card:hover{transform:translateY(-6px);box-shadow:0 16px 36px rgba(0,91,172,.16);border-color:transparent}
.explore-card .ec-icon{width:54px;height:54px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;box-shadow:0 8px 16px rgba(0,91,172,.18)}
.explore-card .ec-icon svg{width:28px;height:28px;stroke:#fff}
.explore-card h3{font-size:16px;color:var(--ink);margin-bottom:8px;font-weight:700}
.explore-card p{color:var(--muted);font-size:12.5px;line-height:1.6;margin-bottom:14px;flex:1}
.explore-card .more{font-size:13px;color:var(--blue);font-weight:600}

/* ---------- 响应式 ---------- */
@media(max-width:1100px){
  .dropdown{width:340px;grid-template-columns:1fr}
}
@media(max-width:1024px){
  .biz-grid{grid-template-columns:repeat(2,1fr)}
  .sys-grid{grid-template-columns:repeat(2,1fr)}
  .cols-3,.paper-grid{grid-template-columns:repeat(2,1fr)}
  .process{flex-wrap:wrap}
  .process-step{flex:1 1 30%}
  .process::before{display:none}
  .about-wrap{flex-direction:column}
  .contact-wrap{flex-direction:column}
  .footer .cols{grid-template-columns:1fr 1fr 1fr}
  .explore-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:900px){
  .menu,.nav-cta .btn{display:none}
  .burger{display:flex}
  /* 移动端菜单必须自己成为一个滚动容器 —— 这是「点不动」的根因。
     原来只有 position:absolute + overflow:visible：实测菜单高 1651px 而视口仅 800px，
     多出的 851px 永远够不着。因为 .header 是 position:sticky，菜单跟着 header 钉在顶部，
     滚动页面不会把菜单下半截带出来，菜单内部又不能滚 —— 两头都堵死了。
     现在 max-height 限住 + overflow-y:auto，滚动发生在菜单内部。
     ● 100dvh 是移动端的关键：100vh 取的是「地址栏收起后」的大视口，
       会把最后几项顶到地址栏后面；dvh 才是当前真实可视高度。保留 vh 作旧浏览器兜底。
     ● overscroll-behavior:contain 防止滚到菜单尽头时"滚动穿透"到背后的页面。 */
  .menu.open{display:flex;position:absolute;top:60px;left:0;right:0;background:#fff;flex-direction:column;justify-content:flex-start;padding:14px 24px 28px;gap:0;box-shadow:var(--shadow);border-top:1px solid var(--line);max-width:none;align-items:stretch;max-height:calc(100vh - 60px);max-height:calc(100dvh - 60px);overflow-y:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch}
  .menu.open>a,.menu.open .has-dropdown>a{padding:14px 0;border-bottom:1px solid var(--line);width:100%;justify-content:space-between}
  .menu.open a::after{display:none}
  .menu.open .has-dropdown{width:100%}
  /* 移动端把「定制服务」改成手风琴：默认收起。
     原来这里是 opacity:1;visibility:visible —— 一打开菜单，18 个系统就全部铺开
     （实测 1217px，占整个菜单的 74%），既把菜单撑得极长，又没有收起的办法。
     保留 opacity/visibility 是为了不和桌面端那条 hover 规则打架，真正的开关是 display。 */
  .menu.open .dropdown{position:static;transform:none;opacity:1;visibility:visible;min-width:0;box-shadow:none;border:none;padding:0 0 8px 14px;grid-template-columns:1fr;background:transparent;display:none}
  .menu.open .dropdown a{padding:8px 0;border-bottom:1px dashed var(--line);font-size:13px}
  /* 展开态：由 main.js 在移动端点击「定制服务」那一行时切换 */
  .menu.open .has-dropdown.open .dropdown{display:grid}
  .menu.open .has-dropdown.open>a{color:var(--blue)}
  .menu.open .has-dropdown.open>a .caret{transform:rotate(180deg)}
  .nav-cta{gap:8px}
.slide h1,.slide h2{font-size:28px}
.slide p{font-size:14px}
/* 移动端文字几乎占满整屏宽，不能照搬桌面端的"右侧全透明"——
   最右边 0.26 兜底，保证副标题和按钮永远落在暗底上 */
.slide::after{background:linear-gradient(90deg,rgba(8,24,48,.97) 0%,rgba(8,24,48,.78) 46%,rgba(8,24,48,.22) 100%)}
.slide .bg::after{display:none}
  .hero{height:456px}
  .innov-grid{grid-template-columns:1fr}
  .biz-grid,.sys-grid,.cols-3,.paper-grid{grid-template-columns:1fr}
  .section{padding:52px 0}
  .section-head h2{font-size:24px}
  .footer .cols{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .logo-img{height:22px}
  .process-step{flex:1 1 45%}
  .about-stats{grid-template-columns:1fr 1fr}
  .form-row{flex-direction:column;gap:0}
  .footer .bottom{flex-direction:column;text-align:center}
}

/* ========== AI 需求智配（首页） ========== */
.ai-match-sec{position:relative;overflow:hidden;background:linear-gradient(135deg,#021a33 0%,#004a8d 55%,#0066b3 100%);color:#fff;padding:76px 0}
.ai-match-sec::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 20% 30%,rgba(6,180,234,.20),transparent 42%),radial-gradient(circle at 82% 72%,rgba(6,180,234,.16),transparent 44%);animation:aiShift 16s ease-in-out infinite alternate;pointer-events:none}
@keyframes aiShift{from{background-position:0 0}to{background-position:70px 50px}}
.ai-net{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.ai-net span{position:absolute;width:4px;height:4px;border-radius:50%;background:#06b4ea;box-shadow:0 0 12px #06b4ea;animation:aiPulse 3.2s ease-in-out infinite}
.ai-net span:nth-child(2){animation-delay:.4s}
.ai-net span:nth-child(3){animation-delay:.8s}
.ai-net span:nth-child(4){animation-delay:1.2s}
.ai-net span:nth-child(5){animation-delay:1.6s}
.ai-net span:nth-child(6){animation-delay:2s}
.ai-net span:nth-child(7){animation-delay:2.4s}
.ai-net span:nth-child(8){animation-delay:2.8s}
@keyframes aiPulse{0%,100%{opacity:.25;transform:scale(.7)}50%{opacity:1;transform:scale(1.5)}}
.ai-match-sec .section-head h2{color:#fff}
.ai-match-sec .section-head .eyebrow{color:#5ed0f5}
.ai-match-sec .section-head p{color:rgba(255,255,255,.78)}

.ai-match-box{position:relative;z-index:2;max-width:940px;margin:0 auto;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:20px;padding:32px;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);box-shadow:0 30px 60px rgba(0,0,0,.32)}

.ai-input-row{display:flex;align-items:center;gap:12px;background:rgba(255,255,255,.96);border-radius:14px;padding:10px 10px 10px 14px;box-shadow:0 10px 30px rgba(0,0,0,.2);transition:.25s}
.ai-input-row:focus-within{box-shadow:0 10px 30px rgba(6,180,234,.35)}
.ai-avatar{flex-shrink:0;width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#005bac,#06b4ea);display:flex;align-items:center;justify-content:center;font-size:22px;animation:aiAvatar 2.4s infinite}
@keyframes aiAvatar{0%{box-shadow:0 0 0 0 rgba(6,180,234,.55)}70%{box-shadow:0 0 0 15px rgba(6,180,234,0)}100%{box-shadow:0 0 0 0 rgba(6,180,234,0)}}
.ai-input-row input{flex:1;border:none;outline:none;font-size:15px;color:#222;background:transparent;padding:9px 4px;min-width:0}
.ai-input-row input::placeholder{color:#9aa1a8}

.ai-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;justify-content:center}
.chip{cursor:pointer;font-size:13px;color:#dbeeff;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);padding:7px 15px;border-radius:20px;transition:.25s;user-select:none}
.chip:hover{background:rgba(6,180,234,.28);border-color:#06b4ea;transform:translateY(-2px);color:#fff}

.ai-result{margin-top:22px;min-height:84px}
.ai-placeholder{text-align:center;color:rgba(255,255,255,.62);padding:26px 0;font-size:14px}
.ai-orbit{width:48px;height:48px;margin:0 auto 14px;border:3px solid rgba(6,180,234,.25);border-top-color:#06b4ea;border-radius:50%;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

.ai-thinking{background:rgba(255,255,255,.08);border-radius:12px;padding:16px 18px;font-size:14px;color:#cfe9fb;line-height:1.95;border-left:3px solid #06b4ea;margin-bottom:16px;animation:cardIn .35s}
.ai-cursor{display:inline-block;width:7px;height:15px;background:#06b4ea;margin-left:3px;vertical-align:-2px;animation:blink 1s step-end infinite}
@keyframes blink{50%{opacity:0}}

.ai-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(252px,1fr));gap:14px}
.ai-card{background:rgba(255,255,255,.97);border-radius:14px;padding:18px;color:#222;box-shadow:0 12px 28px rgba(0,0,0,.2);opacity:0;transform:translateY(16px);animation:cardIn .5s forwards}
@keyframes cardIn{to{opacity:1;transform:translateY(0)}}
.ai-card .badge{display:inline-block;font-size:11px;font-weight:700;color:#fff;background:linear-gradient(135deg,#005bac,#06b4ea);padding:3px 11px;border-radius:20px;margin-bottom:10px}
.ai-card h4{font-size:16px;color:#005bac;margin-bottom:6px;font-weight:700}
.ai-card p{font-size:13px;color:#5b626b;line-height:1.65;margin-bottom:12px}
.ai-card a{font-size:13px;color:#005bac;font-weight:600}
.ai-card a:hover{text-decoration:underline}
.ai-card .score{float:right;font-size:12px;color:#06b4ea;font-weight:700;margin-top:1px}

@media(max-width:640px){
  .ai-match-box{padding:20px}
  .ai-input-row{flex-wrap:wrap}
  .ai-input-row input{flex:1 1 100%;order:2}
  .ai-match-btn{order:3;width:100%;justify-content:center}
  .ai-avatar{order:1}
}

/* ========== 公安备案号（页脚） ========== */
.ga-link{display:inline-flex;align-items:center;gap:4px}
.ga-icon{width:13px;height:13px;flex-shrink:0;vertical-align:-1px}

/* ========== 首屏 AI 神经网络画布（发光神经 + 数据包流） ========== */

/* ========== AI 智配 · 留资获客表单 ========== */
.ai-lead{background:rgba(6,180,234,.10);border:1px solid rgba(6,180,234,.35);border-radius:14px;padding:20px;margin-top:16px;animation:cardIn .5s both}
.ai-lead h4{font-size:16px;color:#fff;margin-bottom:6px;font-weight:700}
.ai-lead .sub{font-size:13px;color:rgba(255,255,255,.76);margin-bottom:14px;line-height:1.7}
.ai-lead-row{display:flex;gap:10px;flex-wrap:wrap}
.ai-lead-row input{flex:1;min-width:150px;padding:11px 14px;border:1px solid rgba(255,255,255,.25);border-radius:8px;font-size:14px;color:#222;background:rgba(255,255,255,.95);outline:none;font-family:inherit}
.ai-lead-row input:focus{border-color:#06b4ea;box-shadow:0 0 0 3px rgba(6,180,234,.18)}
.ai-lead-row button{padding:11px 22px;border:none;border-radius:8px;background:linear-gradient(135deg,#005bac,#06b4ea);color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:.25s;white-space:nowrap;font-family:inherit}
.ai-lead-row button:hover{box-shadow:0 10px 24px rgba(6,180,234,.4);transform:translateY(-2px)}
.ai-lead-row button:disabled{opacity:.6;cursor:not-allowed;transform:none}
.ai-lead .note{font-size:12px;color:rgba(255,255,255,.55);margin-top:10px}
.ai-lead-done{text-align:center;color:#7ee8b0;font-size:14.5px;padding:16px 0;font-weight:600}

@media(max-width:640px){
  .ai-lead-row{flex-direction:column}
  .ai-lead-row button{width:100%}
}

/* ========== AI 能力矩阵 · 全息板块 ========== */
.holo-sec{position:relative;overflow:hidden;background:linear-gradient(160deg,#01162b 0%,#022a52 48%,#013a63 100%)}
/* 顶部渐隐层：把 hero 末尾的深蓝过渡到板块底色，消除分界 */
.holo-sec::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:160px;pointer-events:none;z-index:1;
  background:linear-gradient(180deg,
    #081830 0%,
    rgba(8,24,48,.55) 28%,
    rgba(1,22,43,.20) 62%,
    rgba(1,22,43,0) 100%);
}
.holo-bg{position:absolute;inset:0;pointer-events:none;z-index:0;overflow:hidden}
.holo-lines{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(6,180,234,.10) 1px,transparent 1px),linear-gradient(90deg,rgba(6,180,234,.10) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(ellipse at 50% 42%,#000 18%,transparent 76%);
  mask-image:radial-gradient(ellipse at 50% 42%,#000 18%,transparent 76%);
}
.holo-radar{
  position:absolute;left:50%;top:44%;width:760px;height:760px;margin:-380px 0 0 -380px;border-radius:50%;
  background:conic-gradient(from 0deg,rgba(6,180,234,.30),rgba(6,180,234,.05) 18%,rgba(6,180,234,0) 34%);
  animation:holoSweep 7.5s linear infinite;opacity:.5;
}
@keyframes holoSweep{to{transform:rotate(360deg)}}
.holo-glow{position:absolute;border-radius:50%;filter:blur(72px);opacity:.32}
.holo-glow.g1{width:420px;height:420px;left:-100px;top:-110px;background:#06b4ea;animation:holoFloat 11s ease-in-out infinite}
.holo-glow.g2{width:470px;height:470px;right:-120px;bottom:-150px;background:#0a7ff0;animation:holoFloat 14s ease-in-out infinite reverse}
@keyframes holoFloat{0%,100%{transform:translate(0,0)}50%{transform:translate(28px,-24px)}}

.holo-sec .wrap{position:relative;z-index:2}
.holo-sec .section-head .eyebrow{color:#7fe4ff}
.holo-sec .section-head h2{color:#fff}
.holo-sec .section-head p{color:rgba(219,239,255,.72)}

.holo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:36px}
.holo-card{
  position:relative;display:block;padding:26px 24px 22px;border-radius:16px;overflow:hidden;color:inherit;
  background:linear-gradient(155deg,rgba(6,180,234,.13),rgba(3,26,54,.55) 55%,rgba(2,20,42,.78));
  border:1px solid rgba(6,180,234,.26);
  box-shadow:0 10px 30px rgba(0,20,45,.35),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .35s cubic-bezier(.2,.8,.3,1),box-shadow .35s,border-color .35s;
}
.holo-card::before{
  content:'';position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 50% 0%,rgba(6,180,234,.30),transparent 62%);
  opacity:0;transition:opacity .35s;
}
.holo-card:hover{transform:translateY(-8px);border-color:rgba(6,180,234,.68);box-shadow:0 18px 44px rgba(0,30,70,.55),0 0 34px rgba(6,180,234,.30)}
.holo-card:hover::before{opacity:1}

/* 四角全息边框 */
.holo-card .hc{position:absolute;width:16px;height:16px;border:2px solid rgba(6,180,234,.9);opacity:.5;transition:opacity .3s,width .3s,height .3s;border-radius:3px}
.holo-card .tl{top:8px;left:8px;border-right:0;border-bottom:0;border-radius:6px 0 0 0}
.holo-card .tr{top:8px;right:8px;border-left:0;border-bottom:0;border-radius:0 6px 0 0}
.holo-card .bl{bottom:8px;left:8px;border-right:0;border-top:0;border-radius:0 0 0 6px}
.holo-card .br{bottom:8px;right:8px;border-left:0;border-top:0;border-radius:0 0 6px 0}
.holo-card:hover .hc{opacity:1;width:26px;height:26px}

/* 扫描线 */
.holo-card .hc-scan{
  position:absolute;left:0;right:0;top:0;height:58%;pointer-events:none;
  background:linear-gradient(180deg,transparent,rgba(6,180,234,.15),transparent);
  transform:translateY(-170%);animation:holoScan 4.6s linear infinite;
}
.holo-card:nth-child(2) .hc-scan{animation-delay:.8s}
.holo-card:nth-child(3) .hc-scan{animation-delay:1.6s}
.holo-card:nth-child(4) .hc-scan{animation-delay:2.4s}
.holo-card:nth-child(5) .hc-scan{animation-delay:3.2s}
.holo-card:nth-child(6) .hc-scan{animation-delay:4.0s}
@keyframes holoScan{to{transform:translateY(270%)}}

.hc-ico{
  position:relative;width:52px;height:52px;border-radius:13px;margin-bottom:14px;
  display:flex;align-items:center;justify-content:center;color:#7fe4ff;
  background:rgba(6,180,234,.14);border:1px solid rgba(6,180,234,.32);
  transition:.3s;
}
.hc-ico svg{width:26px;height:26px}
.hc-ico::after{content:'';position:absolute;inset:-4px;border-radius:16px;border:1px solid rgba(6,180,234,.22);animation:holoRing 2.8s ease-out infinite}
@keyframes holoRing{0%{transform:scale(.92);opacity:.7}100%{transform:scale(1.28);opacity:0}}
.holo-card:hover .hc-ico{color:#fff;background:rgba(6,180,234,.32);box-shadow:0 0 22px rgba(6,180,234,.45)}

.holo-card h3{font-size:19px;color:#fff;margin:0 0 8px;font-weight:700;letter-spacing:.3px}
.holo-card p{font-size:13.5px;line-height:1.75;color:rgba(219,239,255,.68);margin:0 0 16px;min-height:48px}
.hc-metrics{display:flex;gap:10px;margin-bottom:16px}
.hc-metrics span{flex:1;padding:9px 10px;border-radius:10px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);display:flex;flex-direction:column;gap:3px}
.hc-metrics b{font-size:17px;color:#06b4ea;font-weight:800;line-height:1.15}
.hc-metrics i{font-style:normal;font-size:11px;color:rgba(219,239,255,.55)}
.hc-more{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:#7fe4ff;font-weight:600}
.hc-more em{font-style:normal;transition:transform .3s}
.holo-card:hover .hc-more em{transform:translateX(5px)}

@media(max-width:1000px){.holo-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){
  .holo-grid{grid-template-columns:1fr;gap:16px}
  .holo-radar{width:520px;height:520px;margin:-260px 0 0 -260px}
  .holo-card p{min-height:0}
}
@media(prefers-reduced-motion:reduce){
  .holo-radar,.holo-glow,.hc-scan,.hc-ico::after{animation:none}
}

/* ============================================================
   2026-08-31  质感升级：滚动渐入 / 微交互 / 数据模块 / 跟随光带
   （替换掉之前的动态粒子方案，改为静态克制 + 轻微动画）
   ============================================================ */

/* ---------- 1. 滚动渐入 ---------- */
.reveal{
  opacity:0;
  transform:translateY(24px);
  transition:opacity .72s cubic-bezier(.22,.68,.32,1),transform .72s cubic-bezier(.22,.68,.32,1);
  will-change:opacity,transform;
}
.reveal.in{opacity:1;transform:translateY(0)}

/* ---------- 3. 跟随滚动的渐变光带 ---------- */
.scroll-band{
  position:fixed;left:0;right:0;top:0;height:78vh;z-index:-1;
  pointer-events:none;opacity:0;transition:opacity .8s ease;
  will-change:transform;
  background:linear-gradient(180deg,
    rgba(6,180,234,0) 0%,
    rgba(6,180,234,.055) 38%,
    rgba(0,91,172,.05) 62%,
    rgba(0,91,172,0) 100%);
}
.scroll-band.on{opacity:1}

/* ---------- 4. 微交互：卡片轻微上浮 + 阴影柔和加深 ---------- */
.biz-card,
.explore-card,
.holo-card{
  transition:transform .34s cubic-bezier(.22,.68,.32,1),
             box-shadow .34s cubic-bezier(.22,.68,.32,1),
             border-color .34s ease;
}
/* 柔和加深的阴影：大扩散 + 低不透明度，不要硬边 */
.biz-card:hover{
  transform:translateY(-5px);
  box-shadow:0 18px 40px -14px rgba(16,42,74,.20),0 4px 12px -4px rgba(16,42,74,.10);
  border-color:rgba(0,91,172,.28);
}
.explore-card:hover{
  transform:translateY(-5px);
  box-shadow:0 18px 40px -14px rgba(0,91,172,.24),0 4px 12px -4px rgba(0,91,172,.12);
  border-color:rgba(0,91,172,.26);
}

/* 按钮 hover 颜色过渡（补一个更顺的缓动） */
.btn{transition:background-color .28s ease,color .28s ease,border-color .28s ease,box-shadow .28s ease,transform .28s ease}
.btn:hover{transform:translateY(-1px)}
.btn-blue:hover{background:#00447f;box-shadow:0 10px 26px -8px rgba(0,91,172,.45)}
.btn-line:hover{background:var(--blue);color:#fff;border-color:var(--blue)}

/* ---------- 5. 减弱动效偏好：全部关掉 ---------- */
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .hero-amb::before,.hero-amb::after{animation:none}
  .biz-card:hover,.explore-card:hover,.holo-card:hover{transform:none}
  .btn:hover{transform:none}
  .scroll-band{display:none}
  .slide.active .rim{animation:none;opacity:.42}
}

/* ==========================================================
   悬浮：企业微信（点开扫码加好友）
   —— 只在页面上存在 #wx-fab / #wx-modal 时才有东西可渲染（目前是首页）。
      样式放在 main.css、脚本放在 main.js 的独立模块里，
      这样以后想铺到别的页面，只要补上同一段标记即可，无需改样式或脚本。
   —— 卡片比例不是随手写的，是按官方卡片原图实测换算：
      卡片 842×1311，蓝色面板占 84.6%，白色底栏占 15.4%，
      二维码白盒占卡片宽 50.8%。缩放基准取卡片宽 340px。
   —— 二维码图片 assets/img/wework-qr.png 是从官方卡片里逐像素抠出来的
      （560×560 符号图再补 59px/边的白边 → 678×678）。
      补白边是因为原始裁切几乎没有静默区（约 0.34 个模块），
      而 QR 规范要求 4 个模块 —— 官方卡片自己也只有 1.29 个模块。
      ⚠️ 该图不能重新量化成 1-bit：模块中心灰度离阈值最近只有 1.2 级，
      粗暴二值化会翻掉 10 个模块（正中那块是企微 logo 叠加区）。
      自适应调色板 ≤16 色是安全的；改完务必重新解码验证。
   ========================================================== */

/* ---------- 右下角悬浮按钮 ---------- */
.wx-fab{
  position:fixed;right:24px;bottom:26px;z-index:60;
  display:inline-flex;align-items:center;gap:9px;
  height:50px;padding:0 19px 0 15px;
  border:0;border-radius:26px;cursor:pointer;
  background:linear-gradient(135deg,#0e8bf5,#0059c8);
  color:#fff;font-family:inherit;font-size:15px;font-weight:600;letter-spacing:.5px;
  box-shadow:0 8px 22px rgba(0,78,168,.28),0 2px 6px rgba(0,40,90,.14);
  transition:transform .25s cubic-bezier(.2,.7,.3,1),box-shadow .25s;
}
.wx-fab:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(0,78,168,.34),0 3px 8px rgba(0,40,90,.16)}
.wx-fab:active{transform:translateY(-1px)}
.wx-fab:focus-visible{outline:2px solid #7cc4ff;outline-offset:3px}
.wx-fab svg{width:23px;height:23px;display:block;flex:0 0 auto}
@media(max-width:520px){
  .wx-fab{right:14px;bottom:16px;height:46px;padding:0 15px 0 12px;font-size:14px}
  .wx-fab svg{width:21px;height:21px}
}

/* ---------- 弹层 ---------- */
.wx-modal{
  position:fixed;inset:0;z-index:9998;
  display:flex;
  padding:30px 20px;
  background:rgba(246,249,252,.84);
  -webkit-backdrop-filter:blur(10px) saturate(1.04);
          backdrop-filter:blur(10px) saturate(1.04);
  overflow-y:auto;
  overscroll-behavior:contain;
}
.wx-modal[hidden]{display:none}
/* 不用 justify-content:center —— 内容高于容器时居中 flex 会向两头溢出，
   顶部那截会落到滚动原点之上、永远滚不到（这个坑刚在移动端菜单上踩过）。
   用子元素 margin:auto：有空间时居中，没空间时正常从顶部开始滚。 */
.wx-inner{
  margin:auto;position:relative;z-index:1;
  display:flex;flex-direction:column;align-items:center;gap:16px;
}
.wx-modal-bd{position:absolute;inset:0;cursor:pointer}

.wx-card{
  position:relative;width:min(340px,88vw);
  border-radius:13px;overflow:hidden;background:#006fe3;
  box-shadow:0 22px 56px rgba(6,26,54,.26),0 3px 10px rgba(6,26,54,.12);
  animation:wx-in .3s cubic-bezier(.2,.8,.3,1) both;
}
@keyframes wx-in{from{opacity:0;transform:translateY(12px) scale(.985)}to{opacity:1;transform:none}}

.wx-card-x{
  position:absolute;top:10px;right:10px;z-index:3;
  width:30px;height:30px;padding:0;
  display:flex;align-items:center;justify-content:center;
  border:0;border-radius:50%;cursor:pointer;
  background:rgba(255,255,255,.16);color:#fff;
  transition:background .2s;
}
.wx-card-x:hover{background:rgba(255,255,255,.3)}
.wx-card-x:focus-visible{outline:2px solid #fff;outline-offset:2px}
.wx-card-x svg{width:15px;height:15px;display:block}

/* 蓝色面板 */
.wx-top{padding:41px 22px 45px;text-align:center;color:#fff}
/* h3 下间距与 qrwrap 下间距合计比官方实测值收了 21px：
   因为二维码盒为了装静默区从 173px 长到 196px，卡片会被顶高，
   卡片高宽比会从 1.557 漂到 1.618。从这两处「富余很大」的留白里收回 21px，
   比例回到 1.558，蓝色面板 84.8% / 白色底栏 15.2%（官方 84.6% / 15.4%）。 */
.wx-top h3{
  margin:0 0 32px;color:#fff;
  font-size:26px;font-weight:700;line-height:1.15;letter-spacing:1px;
}
/* 二维码盒：宽 196px 是算出来的，不是凑的 ——
   图片本身已按标准烘进 4 个模块的白色静默区，此时符号只占图宽 80.97%。
   要让「用户真正看到的符号」回到官方卡片的 47.6% 卡宽：
     340px × 47.6% = 161.8px 符号  →  161.8 / 0.8097 ≈ 200px 图宽
   取 196px（符号 46.7% 卡宽，与官方差 0.9pp），白盒 57.6% 卡宽。
   别再把宽度改回 173px：那是「无静默区」时代的数值，改回去符号会缩到 40.6%。 */
.wx-qrwrap{position:relative;width:196px;margin:0 auto 40px}
.wx-arc{
  position:absolute;left:50%;top:50%;width:132%;height:132%;
  transform:translate(-50%,-50%);pointer-events:none;
}
/* padding 归零：静默区已经在图片里了，再加 CSS padding 就是白叠白。
   overflow:hidden 让图片外圈（纯白静默区）被圆角裁掉 —— 裁不到符号上。 */
.wx-qr{position:relative;background:#fff;border-radius:7px;overflow:hidden;line-height:0}
.wx-qr img{width:100%;height:auto;display:block}
.wx-nm{margin:0 0 4px;font-size:15px;font-weight:600;line-height:1.35;color:#fff}
.wx-sub{margin:0;font-size:12px;line-height:1.65;color:rgba(255,255,255,.88)}

/* 白色底栏 */
.wx-bot{height:82px;background:#fff;display:flex;align-items:center;justify-content:center;gap:9px}
.wx-bot img{height:28px;width:auto;display:block}
.wx-bot span{font-size:19px;font-weight:600;color:#0a5e96;letter-spacing:.5px}

.wx-hint{margin:0;font-size:13px;line-height:1.6;color:#8a9099;letter-spacing:.3px;text-align:center}

/* 弹层打开时锁滚动（由 main.js 加 .wx-lock 到 body） */
body.wx-lock{overflow:hidden}

@media(max-width:520px){
  .wx-modal{padding:22px 14px}
  .wx-card{width:min(340px,90vw)}
}
@media (prefers-reduced-motion: reduce){
  .wx-card{animation:none}
  .wx-fab{transition:none}
}


/* ===== V3 2026-10-09 首页重构：东软式 banner + 三大产品 + 精简板块 ===== */

/* --- banner：东软式极简（轻遮罩、大字、一行副题） --- */
.slide::after{background:linear-gradient(90deg,rgba(8,24,48,.86) 0%,rgba(8,24,48,.58) 26%,rgba(8,24,48,.16) 54%,rgba(8,24,48,0) 76%)}
.slide h1,.slide h2{font-size:54px;line-height:1.2;max-width:920px}
.slide .bn-sub{color:rgba(255,255,255,.85);font-size:17px;letter-spacing:1.5px;margin-top:18px}
@media(max-width:900px){
  .slide::after{background:linear-gradient(90deg,rgba(8,24,48,.92) 0%,rgba(8,24,48,.66) 46%,rgba(8,24,48,.22) 100%)}
  .slide h1,.slide h2{font-size:30px;white-space:normal}
  .slide .bn-sub{font-size:14px;letter-spacing:1px}
}

/* --- 数字信任条 --- */
.stat-strip{background:#f4f7fb;border-top:1px solid #e6edf5;border-bottom:1px solid #e6edf5}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:36px 0}
.stat-item{text-align:center}
.stat-item b{font-size:40px;font-weight:700;color:var(--blue);letter-spacing:.5px}
.stat-item b i{font-style:normal;color:var(--cyan);font-size:26px;margin-left:2px}
.stat-item span{display:block;margin-top:4px;color:var(--ink);opacity:.72;font-size:14px;letter-spacing:2px}
@media(max-width:900px){.stat-grid{grid-template-columns:repeat(2,1fr);padding:26px 0;gap:16px}.stat-item b{font-size:30px}}

/* --- 三大产品 --- */
.prod-sec{background:#fff}
.prod-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:22px;margin-top:44px}
.prod-card{position:relative;background:#fff;border:1px solid #e6edf5;border-radius:14px;padding:30px 28px;box-shadow:0 6px 24px rgba(16,42,80,.05);transition:transform .3s ease,box-shadow .3s ease;display:flex;flex-direction:column}
.prod-card:hover{transform:translateY(-5px);box-shadow:0 16px 40px rgba(16,42,80,.12)}
.prod-card--hero{background:linear-gradient(180deg,#f6faff 0%,#ffffff 60%);border-color:#d8e8f8}
.pc-badge{position:absolute;top:22px;right:22px;background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;font-size:12px;padding:4px 10px;border-radius:999px;letter-spacing:1px}
.prod-card h3{font-size:22px;color:var(--ink);margin:2px 0 10px}
.pc-desc{color:var(--ink);opacity:.78;font-size:14.5px;line-height:1.8}
.pc-points{margin:14px 0 18px;padding:0;list-style:none}
.pc-points li{position:relative;padding-left:20px;color:var(--ink);opacity:.85;font-size:14px;line-height:2}
.pc-points li::before{content:"";position:absolute;left:2px;top:.95em;width:8px;height:8px;border-radius:2px;background:linear-gradient(135deg,var(--blue),var(--cyan))}
.pc-metrics{display:flex;gap:26px;margin:auto 0 14px;padding-top:14px;border-top:1px dashed #e6edf5}
.pc-metrics b{font-size:22px;color:var(--blue);font-weight:700}
.pc-metrics i{display:block;font-style:normal;color:var(--ink);opacity:.6;font-size:12px;margin-top:2px}
.pc-more{color:var(--blue);font-weight:600;font-size:14.5px;text-decoration:none}
.pc-more em{font-style:normal;display:inline-block;transition:transform .3s}
.pc-more:hover em{transform:translateX(4px)}
.pc-chips{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 22px}
.pc-chips a{font-size:13px;color:var(--ink);opacity:.85;text-decoration:none;background:#f2f7fd;border:1px solid #e0ecf9;border-radius:999px;padding:5px 12px;transition:background .25s,color .25s}
.pc-chips a:hover{color:#fff;background:var(--blue);border-color:var(--blue)}
.pc-btn{margin-top:auto;align-self:flex-start}
@media(max-width:1080px){.prod-grid{grid-template-columns:1fr}}

/* --- 技术方案（首页） --- */
.case-sec{background:#f7fafd}
.hc3-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}
.hc3-card{background:#fff;border:1px solid #e6edf5;border-radius:14px;padding:26px;transition:transform .3s ease,box-shadow .3s ease;display:flex;flex-direction:column}
.hc3-card:hover{transform:translateY(-5px);box-shadow:0 16px 40px rgba(16,42,80,.12)}
.hc3-tags{display:flex;gap:8px;margin-bottom:14px}
.hc3-tag{font-size:12px;color:var(--blue);background:#eaf4fe;border-radius:4px;padding:3px 10px}
.hc3-card h3{font-size:17.5px;line-height:1.5;color:var(--ink);margin-bottom:10px}
.hc3-card p{font-size:13.5px;line-height:1.8;color:var(--ink);opacity:.75}
.hc3-kpi{margin-top:auto;padding-top:14px;border-top:1px dashed #e6edf5;color:var(--blue);font-weight:700;font-size:15px;overflow:hidden}
.hc3-kpi a{float:right;font-weight:500;font-size:13px;color:var(--cyan);text-decoration:none}
@media(max-width:900px){.hc3-grid{grid-template-columns:1fr}}

/* --- 为什么选我们 + CTA --- */
.adv-sec{background:#fff}
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}
.adv-card{background:#f7fafd;border:1px solid #e6edf5;border-radius:14px;padding:26px;transition:transform .3s ease,box-shadow .3s ease,background .3s}
.adv-card:hover{transform:translateY(-5px);background:#fff;box-shadow:0 16px 40px rgba(16,42,80,.10)}
.adv-no{font-size:13px;font-weight:700;color:var(--cyan);letter-spacing:2px}
.adv-card h3{font-size:18px;color:var(--ink);margin:8px 0}
.adv-card p{font-size:13.5px;line-height:1.8;color:var(--ink);opacity:.75}
.cta-band{margin-top:56px;background:linear-gradient(120deg,#061426,#0a1d33 55%,#07182b);border-radius:16px;padding:44px 40px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.cta-band h3{color:#fff;font-size:24px;margin:0 0 8px}
.cta-band p{color:rgba(255,255,255,.72);font-size:14.5px;margin:0}
.cta-band .bn-phone{color:rgba(255,255,255,.85);font-size:14px;margin-top:10px;display:block}
.cta-band .btn{white-space:nowrap}
@media(max-width:900px){.adv-grid{grid-template-columns:1fr}.cta-band{flex-direction:column;text-align:center;padding:34px 24px}}

/* ===== V4 2026-10-10 海外 AI 站模式：产品表面上前 + AI 能力矩阵 ===== */

/* --- banner：Agent 对话小卡（Product UI is the hero） --- */
.slide--agent .wrap{display:flex;align-items:center;gap:56px}
.slide--agent .bn-txt{flex:1;min-width:0}
.slide h1 em,.slide h2 em{font-style:normal;background:linear-gradient(90deg,#5cb3ff,#06b4ea);-webkit-background-clip:text;background-clip:text;color:transparent}
.bn-agent{width:400px;flex-shrink:0;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:14px;padding:14px 16px 12px;backdrop-filter:blur(8px);box-shadow:0 24px 60px rgba(0,0,0,.35)}
.ba-bar{display:flex;align-items:center;gap:8px;color:rgba(255,255,255,.85);font-size:12px;letter-spacing:.5px;padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,.12);margin-bottom:12px}
.ba-dots{display:flex;gap:5px}
.ba-dots i{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.25)}
.ba-live{margin-left:auto;color:#38e1b0;font-size:11px}
.ba-row{display:flex;gap:8px;margin-bottom:10px}
.ba-ava{flex-shrink:0;width:26px;height:26px;border-radius:8px;background:rgba(255,255,255,.12);display:flex;align-items:center;justify-content:center;font-size:13px}
.ba-row p{color:rgba(255,255,255,.92);font-size:12.8px;line-height:1.7;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.10);border-radius:10px;padding:8px 11px;margin:0}
.ba-row.u p{background:rgba(6,180,234,.16);border-color:rgba(6,180,234,.3)}
.ba-row b{color:#7fd4ff;font-weight:600}
.ba-acts{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.ba-acts i{font-style:normal;font-size:11px;color:#bfe6ff;border:1px solid rgba(127,212,255,.4);border-radius:999px;padding:2px 9px}
.ba-input{margin-top:2px;display:flex;align-items:center;background:rgba(0,0,0,.28);border:1px solid rgba(255,255,255,.14);border-radius:9px;padding:8px 12px;color:rgba(255,255,255,.55);font-size:12px}
.ba-cursor{width:1px;height:12px;background:#06b4ea;margin-left:8px;animation:baBlink 1.2s steps(1) infinite}
@keyframes baBlink{50%{opacity:0}}
@media(prefers-reduced-motion:reduce){.ba-cursor{animation:none}}
@media(max-width:1080px){.bn-agent{display:none}.slide--agent .wrap{display:block}}

/* --- AI 能力矩阵 --- */
.cap-sec{background:#f7fafd}
.cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:44px}
.cap-card{background:#fff;border:1px solid #e6edf5;border-radius:14px;padding:24px 22px;transition:transform .3s ease,box-shadow .3s ease}
.cap-card:hover{transform:translateY(-5px);box-shadow:0 16px 40px rgba(16,42,80,.12)}
.cap-ico{width:44px;height:44px;border-radius:11px;background:linear-gradient(135deg,#eaf4fe,#f6fbff);color:var(--blue);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.cap-ico svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.cap-card h3{font-size:16.5px;color:var(--ink);margin-bottom:8px}
.cap-card p{font-size:13.5px;line-height:1.8;color:var(--ink);opacity:.75}
@media(max-width:1080px){.cap-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.cap-grid{grid-template-columns:1fr}}

/* ===== V5 2026-10-10晚：banner 换新背景（三屏）+ 慢速呼吸缩放 + 亮底文字可读性 ===== */
/* 新背景为亮色调（白机器人 / 亮车间），kbPush 加大幅度并无视 prefers-reduced-motion（用户要求背景必须动） */
@keyframes kbPush{
  0%{transform:scale(1.03) translate(0,0)}
  100%{transform:scale(1.13) translate(-1.6%,-1.1%)}
}
.slide.active .bg img{animation:kbPush 22s ease-in-out infinite alternate}
/* 亮背景不再需要 screen 提亮层；左侧遮罩加深保证白色标题对比度 */
.slide .bg::after{display:none}
.slide::after{background:linear-gradient(90deg,rgba(6,16,34,.94) 0%,rgba(6,16,34,.82) 24%,rgba(6,16,34,.48) 50%,rgba(6,16,34,.06) 78%)}
@media(max-width:900px){
  .slide::after{background:linear-gradient(90deg,rgba(6,16,34,.95) 0%,rgba(6,16,34,.72) 50%,rgba(6,16,34,.26) 100%)}
}

/* 晚十二：ext-hero 大标题单行（标题约 910px 宽，880px 上限会折行；1152px 后桌面单行，移动端断点不受影响） */
.ext-hero .wrap h1{max-width:1152px}

/* 晚十三：banner 轻动态——激活屏文字渐入上移、错峰 0.12/0.22s；非激活屏文字隐藏（整屏本就 opacity:0 不可见） */
.slide .wrap>*{opacity:0;translate:0 16px}
.slide.active .wrap>*{opacity:1;translate:0 0;transition:opacity .7s ease,translate .7s ease}
.slide.active .wrap>*:nth-child(2){transition-delay:.12s}
.slide.active .wrap>*:nth-child(3){transition-delay:.22s}
@media(prefers-reduced-motion:reduce){.slide .wrap>*{opacity:1;translate:none}}