/* ============================================================
   芊宥获客 · 公共样式 common.css
   仅含：全局变量/重置、头部、底部、按钮、通用组件
   页面私有样式见 luobo/css/页面名.css
   规范：严格 PC 端，内容宽度 1380px（硬性标准），主色 #ff2442
   ============================================================ */

:root{
  --wrap:1380px;
  --brand:#ff2442;
  --brand-dark:#e01233;
  --brand-soft:#fff1f3;
  --ink:#1f2329;
  --ink-2:#51565d;
  --ink-3:#8a9099;
  --line:#ececec;
  --bg-soft:#f7f8fa;
  --shadow:0 12px 40px rgba(31,35,41,.08);
  --ease:cubic-bezier(.4,0,.2,1);
}

*{margin:0;padding:0;box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:120px;}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:#fff;font-size:15px;line-height:1.75;
  min-width:1420px;
}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand);}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:2px;}

/* 尊重系统"减少动态效果"设置，避免眩晕 */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;scroll-padding-top:0;}
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;scroll-behavior:auto !important;}
}
img{display:block;max-width:100%;border:0;}
/* 行内箭头图标（替代原来的 → 字符），img 默认 block，这里改回行内 */
.arw{display:inline-block;width:12px;height:12px;margin:0 3px;vertical-align:-1px;}
ul,ol{list-style:none;}
em,i{font-style:normal;}
table{border-collapse:collapse;}

.wrap{width:1380px;margin:0 auto;}
.sec{padding:96px 0;}
.sec-alt{background:var(--bg-soft);}
.sec-head{margin-bottom:52px;}
.sec-title{font-size:36px;font-weight:700;line-height:1.35;letter-spacing:.5px;}
.sec-title .dot{color:var(--brand);}
.sec-sub{margin-top:14px;font-size:16px;color:var(--ink-2);max-width:760px;}
.sec-tag{display:inline-block;margin-bottom:14px;padding:4px 14px;font-size:13px;font-weight:600;
  color:var(--brand);background:var(--brand-soft);border-radius:3px;letter-spacing:2px;}

/* ---------------- 按钮 ---------------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:52px;padding:0 36px;
  background:var(--brand);border:1px solid var(--brand);border-radius:6px;color:#fff;
  font-size:16px;font-weight:600;cursor:pointer;transition:all .28s var(--ease);white-space:nowrap;}
.btn:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;}
.btn:active{transform:scale(.97);}
.btn-ghost{background:#fff;color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);}
.btn-lg{height:58px;padding:0 46px;font-size:17px;border-radius:8px;}

/* 按钮右侧箭头：纯 CSS 细线箭头，跟随文字色（白底→红、红底→白），不用图片 */
.btn::after{content:"";width:8px;height:8px;flex-shrink:0;
  border-top:2px solid currentColor;border-right:2px solid currentColor;transform:rotate(45deg);}
.btn-lg::after{width:9px;height:9px;}

/* ---------------- 面包屑 ---------------- */
.crumb{padding:22px 0;border-bottom:1px solid var(--line);font-size:13px;color:var(--ink-3);}
.crumb a{color:var(--ink-3);}
.crumb a:hover{color:var(--brand);}
.crumb .cur{color:var(--ink);}
.crumb span{margin:0 8px;color:#d5d8dd;}

/* ---------------- 顶部信息条 ---------------- */
.topbar{background:var(--ink);color:#fff;font-size:13px;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:38px;}
.topbar-slogan{color:rgba(255,255,255,.85);letter-spacing:1px;}
.topbar-links{display:flex;align-items:center;gap:24px;color:rgba(255,255,255,.85);}
.topbar-links a{color:#fff;font-weight:500;}
.topbar-links a:hover{color:var(--brand);}
.topbar-qr{position:relative;}
.topbar-qr-trigger{cursor:pointer;}
.topbar-qr::after{content:"";position:absolute;top:100%;left:0;right:0;height:12px;}
.topbar-qr-pop{position:absolute;top:100%;right:0;margin-top:12px;z-index:120;width:164px;padding:14px;
  background:#fff;border-radius:12px;box-shadow:0 12px 32px rgba(0,0,0,.22);text-align:center;
  opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity .2s,transform .2s,visibility .2s;}
.topbar-qr:hover .topbar-qr-pop{opacity:1;visibility:visible;transform:translateY(0);}
.topbar-qr-pop::before{content:"";position:absolute;top:-7px;right:20px;border:7px solid transparent;border-bottom-color:#fff;}
.topbar-qr-pop img{display:block;width:120px;height:120px;margin:0 auto 8px;padding:6px;background:#fff;border:1px solid var(--line);border-radius:8px;}
.topbar-qr-pop .qr-tt{display:block;margin-bottom:8px;font-size:13px;font-weight:700;color:var(--ink);}
.topbar-qr-pop .qr-cap{display:block;font-size:11.5px;line-height:1.5;color:var(--ink-3);}

/* ---------------- 主导航 ---------------- */
.site-header{position:sticky;top:0;z-index:100;background:#fff;}
.navbar{border-bottom:1px solid var(--line);background:#fff;transition:box-shadow .25s;}
.site-header.scrolled .navbar{box-shadow:0 6px 24px rgba(31,35,41,.08);}
.navbar-inner{position:relative;display:flex;align-items:center;height:76px;}
.logo{display:flex;align-items:center;gap:10px;margin-right:56px;flex-shrink:0;}
.logo-mark{display:flex;align-items:center;justify-content:center;width:42px;height:42px;
  background:var(--brand);border-radius:8px;color:#fff;font-size:22px;font-weight:700;}
.logo-text{line-height:1.2;}
.logo-text strong{display:block;font-size:19px;letter-spacing:1px;}
.logo-text em{display:block;font-size:10px;color:var(--ink-3);letter-spacing:2.5px;}
.nav-list{display:flex;align-items:center;gap:34px;}
/* 注意：li 不加 position:relative —— 否则五线下拉会以「五条业务线」这个 li 为定位基准，
   面板宽度被限制成 li 的宽度。hover 下划线由 a 自身的 relative 承担，不依赖 li。 */
.nav-list > li{height:76px;display:flex;align-items:center;}
.nav-list > li > a{font-size:16px;font-weight:500;padding:6px 0;position:relative;}
.nav-list > li > a::after{content:"";position:absolute;left:0;bottom:-2px;width:100%;height:2px;
  background:var(--brand);transform:scaleX(0);transition:transform .25s;}
.nav-list > li:hover > a::after,
.nav-list > li.active > a::after{transform:scaleX(1);}
.nav-list > li.active > a{color:var(--brand);}
/* img 默认 display:block（见第 30 行），这里改回行内，否则箭头会独占一行 */
/* 下拉指示箭头：用 line 图标，旋转 90° 指向下方，悬停展开时翻转为上方 */
.nav-arrow{display:inline-block;margin-left:4px;vertical-align:middle;width:10px;height:10px;
  transform:rotate(90deg);transition:transform .25s var(--ease);}
.has-sub:hover .nav-arrow{transform:rotate(270deg);}

/* 五线宽幅下拉 */
/* 定位基准是 .navbar-inner（即内容区 .wrap），left/right 为 0 →
   面板宽度与内容区等宽，左缘与面包屑、logo 对齐，且随各页响应式宽度同步变化 */
.has-sub .subnav{position:absolute;left:0;right:0;top:76px;transform:translateY(8px);
  padding:26px 26px 30px;background:#fff;border:1px solid var(--line);border-top:2px solid var(--brand);
  box-shadow:var(--shadow);border-radius:0 0 8px 8px;opacity:0;visibility:hidden;transition:all .22s;}
.has-sub:hover .subnav{opacity:1;visibility:visible;transform:translateY(0);}
/* width:auto 覆盖 .wrap 的固定 1380，避免叠加 .subnav 左右内边距后溢出 */
.subnav-inner{width:auto;display:grid;grid-template-columns:repeat(5,1fr);gap:16px;}
.sub-card{display:block;padding:18px 16px 16px;border:1px solid var(--line);border-radius:8px;transition:all .2s;}
.sub-card:hover{border-color:var(--brand);box-shadow:0 8px 24px rgba(255,36,66,.1);color:inherit;}
.sub-card .no{font-size:12px;font-weight:700;color:var(--brand);letter-spacing:1px;}
.sub-card h3{margin:6px 0 4px;font-size:16px;}
/* 导航下拉「五条业务线」：按链接为每张卡片配图标（全站 15 页共用这段） */
.sub-card h3::before{content:"";display:inline-block;width:16px;height:16px;margin-right:7px;
  vertical-align:-2px;background:no-repeat center/contain;}
.sub-card[href="short-video.html"] h3::before{background-image:url(../images/play-line.png);}
.sub-card[href="ip.html"] h3::before{background-image:url(../images/user-line.png);}
.sub-card[href="xhs.html"] h3::before{background-image:url(../images/heart-line.png);}
.sub-card[href="geo.html"] h3::before{background-image:url(../images/chat-ai-line.png);}
.sub-card[href="live.html"] h3::before{background-image:url(../images/camera-line.png);}
.sub-card p{font-size:12.5px;color:var(--ink-3);line-height:1.6;}
.sub-card:hover h3{color:var(--brand);}
/* 当前所在业务线：常驻 hover 同款高亮，让用户知道自己在哪条线 */
.sub-card.current{border-color:var(--brand);background:var(--brand-soft);
  box-shadow:0 8px 24px rgba(255,36,66,.1);}
.sub-card.current h3{color:var(--brand);}
.sub-card.current p{color:var(--ink-2);}

/* 导航右侧 CTA */
.nav-cta{margin-left:auto;display:inline-flex;align-items:center;height:44px;padding:0 22px;
  background:var(--brand);color:#fff;font-size:14.5px;font-weight:600;border-radius:22px;transition:all .28s var(--ease);}
.nav-cta:hover{background:var(--brand-dark);color:#fff;}
.nav-cta:active{transform:scale(.96);}

/* ---------------- FAQ（全站通用） ---------------- */
.faq-list{max-width:900px;margin:0 auto;}
.faq-item{border:1px solid var(--line);border-radius:8px;margin-bottom:14px;background:#fff;overflow:hidden;}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 26px;
  font-size:16.5px;font-weight:600;cursor:pointer;user-select:none;}
.faq-q:hover{color:var(--brand);}
.faq-q .ind{flex-shrink:0;width:26px;height:26px;border-radius:50%;background:var(--brand-soft);
  color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:400;
  transition:transform .25s;}
.faq-item.open .ind{transform:rotate(45deg);}
.faq-item .faq-a{display:none;padding:0 26px 22px;color:var(--ink-2);font-size:15px;}
.faq-item.open .faq-a{display:block;}

/* ---------------- 表单（全站通用） ---------------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px 24px;}
.form-item{display:flex;flex-direction:column;gap:8px;}
.form-item.full{grid-column:1 / -1;}
.form-item label{font-size:14px;font-weight:600;}
.form-item label .req{color:var(--brand);margin-left:2px;}
.form-item input,.form-item textarea,.form-item select{height:48px;padding:0 14px;border:1px solid var(--line);
  border-radius:6px;font-size:15px;font-family:inherit;background:#fff;outline:none;transition:border .2s;}
.form-item textarea{height:110px;padding:12px 14px;resize:vertical;}
.form-item input:focus,.form-item textarea:focus,.form-item select:focus{border-color:var(--brand);}
.form-item.err input,.form-item.err textarea,.form-item.err select{border-color:var(--brand);}
.form-tip{font-size:12.5px;color:var(--ink-3);}
.form-actions{grid-column:1 / -1;display:flex;align-items:center;gap:18px;}
.form-msg{font-size:13.5px;color:var(--brand);display:none;}
.form-msg.show{display:block;}

/* ---------------- 悬浮组件 ---------------- */
.float-cta{position:fixed;right:24px;bottom:90px;z-index:90;display:flex;flex-direction:column;gap:10px;}
.float-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;width:64px;height:64px;
  background:#fff;border:1px solid var(--line);border-radius:10px;font-size:11px;color:var(--ink-2);
  box-shadow:var(--shadow);cursor:pointer;transition:all .28s var(--ease);text-align:center;line-height:1.35;padding:4px;}
.float-btn:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-3px);box-shadow:0 16px 36px rgba(255,36,66,.18);}
.float-btn:active{transform:scale(.94);}
.float-btn svg,.float-btn img{margin-bottom:3px;width:22px;height:22px;object-fit:contain;}
.float-btn.top{opacity:0;visibility:hidden;}
.float-btn.top.show{opacity:1;visibility:visible;}

/* 加微信按钮悬停二维码弹窗 */
.float-item{position:relative;}
.float-qr{
  position:absolute;right:78px;bottom:8px;z-index:95;width:184px;
  padding:16px 16px 14px;background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:0 18px 44px rgba(15,23,42,.20);text-align:center;
  opacity:0;visibility:hidden;transform:translateY(10px) scale(.95);transform-origin:bottom right;
  transition:opacity .22s ease,transform .22s ease,visibility .22s;pointer-events:none;
}
.float-qr::before,.float-qr::after{content:"";position:absolute;right:-8px;top:50%;transform:translateY(-50%);
  border:8px solid transparent;border-left-color:var(--line);}
.float-qr::after{right:-6px;border:7px solid transparent;border-left-color:#fff;}
.float-item:hover .float-qr{opacity:1;visibility:visible;transform:translateY(0) scale(1);}
.float-qr .qr-tt{display:block;margin-bottom:12px;font-size:14px;font-weight:800;color:var(--ink);letter-spacing:.5px;}
.float-qr .qr-tt::before{content:"";display:inline-block;width:18px;height:18px;margin-right:7px;
  vertical-align:-3px;border-radius:5px;background:#07c160;}
.float-qr img{display:block;width:150px;height:150px;margin:0 auto;padding:8px;
  background:#fff;border:1px solid var(--line);border-radius:12px;}
.float-qr .qr-cap{display:block;margin-top:12px;font-size:12px;line-height:1.6;color:var(--ink-3);}
.float-qr .qr-cap b{color:var(--brand);font-weight:700;}

/* ---------------- 页脚 ---------------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);margin-top:96px;}
.footer-main{display:grid;grid-template-columns:1.1fr auto auto auto 320px;gap:32px;padding:64px 0 48px;}
.footer-brand .logo-text strong{color:#fff;font-size:20px;}
.footer-brand .logo-text em{color:rgba(255,255,255,.45);}
.footer-brand p{margin-top:18px;font-size:13.5px;line-height:1.9;}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px;font-weight:600;}
.footer-col li{margin-bottom:11px;font-size:13.5px;}
.footer-col a{color:rgba(255,255,255,.72);}
.footer-col a:hover{color:var(--brand);}
.footer-col .strong{color:#fff;font-size:15px;font-weight:600;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:24px 0 26px;font-size:12.5px;
  color:rgba(255,255,255,.45);}
.footer-links{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;padding-bottom:16px;
  border-bottom:1px solid rgba(255,255,255,.1);}
.footer-links .fl-label{font-weight:700;color:#fff;}
.footer-links a{color:rgba(255,255,255,.6);}
.footer-links a:hover{color:var(--brand);}
.footer-legal{margin-top:16px;line-height:1.9;}
.footer-legal .beian{margin:6px 0;}
.footer-legal a,.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-legal a:hover,.footer-bottom a:hover{color:var(--brand);}

/* 页脚二维码（公众号 + 客服，置于「联系我们」右侧） */
.footer-qr{display:flex;flex-direction:column;gap:18px;}
.footer-qr .qr-head{color:#fff;font-size:16px;margin:0;font-weight:600;}
.footer-qr .qr-cards{display:flex;gap:16px;}
.footer-qr .qr-card{flex:1;display:flex;flex-direction:column;align-items:center;gap:9px;padding:12px 10px;
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);border-radius:12px;
  transition:transform .2s,border-color .2s,background .2s;}
.footer-qr .qr-card:hover{transform:translateY(-3px);border-color:var(--brand);background:rgba(255,255,255,.07);}
.footer-qr .qr-card img{width:100%;max-width:124px;height:auto;padding:6px;background:#fff;border-radius:10px;
  box-shadow:0 5px 14px rgba(0,0,0,.28);}
.footer-qr .qr-tag{padding:2px 10px;border-radius:12px;background:var(--brand);color:#fff;font-size:11px;font-weight:700;letter-spacing:.5px;}
.footer-qr .qr-name{font-size:13px;font-weight:700;color:#fff;line-height:1.3;text-align:center;}
.footer-qr .qr-desc{margin-top:3px;font-size:11.5px;line-height:1.5;color:rgba(255,255,255,.6);text-align:center;}