:root{
  --ink:#24252c; --ink2:#646464; --ink3:#adadad;
  --bg:#ffffff; --bg2:#f4f6f7; --line:#eeeeee; --line2:#d8d8d8;
  --accent:#ff1a38;
  --r:6px;
  --max:1680px;
  --nav:68px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  color:var(--ink);background:var(--bg);
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit}

/* ===== layout ===== */
.container{max-width:100%;margin:0;padding-left:20px;padding-right:0}
.section{padding:120px 0}
.section--tight{padding:88px 0}
/* 首页社交卡片区：上移进首屏底部留白，水平居中，完整落在首屏内 */
.social-strip{padding-top:0;padding-bottom:24px;margin-top:-400px}
@media(max-width:1024px){
  .social-strip{margin-top:0;padding-top:40px}
}
.section--gray{background:var(--bg2)}
.section--dark{background:var(--ink);color:#fff}
.eyebrow{
  font-size:13px;letter-spacing:.14em;color:var(--ink3);
  text-transform:uppercase;margin-bottom:20px;font-weight:500;
}
.section--dark .eyebrow{color:#8a8b93}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.02em;line-height:1.15}
.h-display{font-size:clamp(40px,6.2vw,76px)}
.h2{font-size:clamp(30px,3.6vw,44px)}
.h3{font-size:22px;font-weight:700}
.lead{font-size:18px;color:var(--ink2);max-width:640px;line-height:1.8}
.section--dark .lead{color:#c9cad0}
.muted{color:var(--ink2)}
.small{font-size:13px;color:var(--ink3)}

/* ===== nav （吸顶、全宽、始终透明背景；默认深色字，压到深色区块时 JS 切换白字自然过渡） ===== */
.nav{
  position:sticky;top:0;left:0;width:100%;z-index:1000;
  --nav-ink:#24252c;--nav-ink2:#5b5e68;
  background:transparent;color:var(--nav-ink);
  border-bottom:1px solid transparent;
}
/* 压在视频/深色页脚上时：白字 + 轻阴影，颜色平滑过渡 */
.nav.nav--light{
  --nav-ink:#ffffff;--nav-ink2:rgba(255,255,255,.85);
  text-shadow:0 1px 8px rgba(0,0,0,.35);
}
.nav .brand-txt,.nav .brand-txt em,.nav .nav-links a{
  transition:color .35s cubic-bezier(.4,0,.2,1),text-shadow .35s cubic-bezier(.4,0,.2,1);
}
.nav-in{
  height:var(--nav);display:flex;align-items:center;justify-content:flex-start;
  padding-left:20px;padding-right:20px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-txt{font-size:21px;font-weight:800;display:flex;align-items:baseline;gap:12px;color:var(--nav-ink);letter-spacing:-.01em}
.brand-txt em{font-style:normal;font-size:14px;font-weight:500;color:var(--nav-ink2)}
.nav-links{display:flex;gap:60px;margin-left:60px}
.nav-links a{font-size:15px;color:var(--nav-ink2);position:relative;padding:4px 0;transition:color .25s}
.nav-links a:hover{color:var(--nav-ink)}
.nav-links a.on{color:var(--nav-ink);font-weight:600}
.nav-links a.on::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent);
}
.nav-right{display:flex;align-items:center;gap:20px;flex-shrink:0;margin-left:auto}
.nav-tel{font-size:15px;font-weight:700;letter-spacing:.01em;color:var(--nav-ink)}
.nav-toggle{display:none;width:40px;height:40px;border:0;background:none;cursor:pointer}
.nav-toggle span{display:block;width:22px;height:1.5px;background:var(--nav-ink);margin:5px auto;transition:.3s}
.nav.open .nav-toggle span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav.open .nav-toggle span:nth-child(2){opacity:0}
.nav.open .nav-toggle span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
@media(max-width:1024px){
  .nav-in{padding-left:20px;padding-right:20px}
  .nav-links{gap:40px;margin-left:40px}
}
@media(max-width:900px){
  .nav-in{padding-left:20px;padding-right:20px}
  .nav-links{display:none;position:absolute;top:var(--nav);left:0;right:0;background:#0a0a0a;flex-direction:column;gap:0;padding:8px 16px 24px;margin-left:0;justify-content:flex-start}
  .nav.open .nav-links{display:flex}
  .nav-links a{padding:14px 0;font-size:16px;color:var(--nav-ink2);border-bottom:1px solid rgba(255,255,255,.1)}
  .nav-links a.on,.nav-links a:hover{color:#fff}
  .nav-links a.on::after{display:none}
  .nav-toggle{display:block}
  .nav-right .btn{display:none}
}

/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:4px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:.25s;white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#e0142f}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--accent);color:#fff}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:40px}

/* ===== hero ===== */
.hero{
  position:relative;overflow:hidden;
  min-height:100vh;min-height:100svh;
  display:flex;align-items:flex-start;
  margin-top:calc(var(--nav) * -1);
  background:#0d0e13;color:#fff;
}
.hero-video-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.hero-veil{position:absolute;inset:0;z-index:1;
  background:
    linear-gradient(90deg, rgba(13,14,19,.92) 0%, rgba(13,14,19,.7) 46%, rgba(13,14,19,.26) 100%),
    linear-gradient(0deg, rgba(13,14,19,.9) 0%, rgba(13,14,19,0) 40%);
}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start;width:100%;position:relative;z-index:2;padding:calc(var(--nav) + 16px) 20px 100px 20px}
/* 首页 hero 文字整体加大，参考 INDEX 大标题风格 */
.h-display{font-size:clamp(48px,7.4vw,88px)}
.hero .h-display{font-size:clamp(48px,7vw,100px);letter-spacing:-.045em;line-height:1.02;color:#fff}
.hero .h-display span{color:var(--accent)}
.hero-copy{display:flex;flex-direction:column;align-items:flex-start;padding-top:0}
.hero .lead{font-size:19px;line-height:1.75;max-width:540px;margin-top:24px;color:rgba(255,255,255,.82)}
.hero-cta{display:flex;gap:16px;margin-top:34px;flex-wrap:wrap}
.hero-cta .btn{height:54px;padding:0 32px;font-size:16px}
.hero-cta .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.hero-cta .btn-ghost:hover{background:#fff;color:var(--ink)}
.hero-stats{display:flex;gap:52px;margin-top:40px;padding-top:24px;border-top:1px solid rgba(255,255,255,.18)}
.hero-stats div{display:flex;flex-direction:column;gap:6px}
.hero-stats b{font-size:38px;font-weight:800;letter-spacing:-.03em;line-height:1;color:#fff}
.hero-stats span{font-size:13px;color:rgba(255,255,255,.65)}

/* ===== cards ===== */
.grid{display:grid;gap:20px}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:32px;transition:border-color .3s,transform .3s;
  display:flex;flex-direction:column;
}
.card:hover{border-color:var(--ink);transform:translateY(-2px)}
.card .ico{width:40px;height:40px;margin-bottom:22px;color:var(--ink)}
.card h3{font-size:20px;margin-bottom:10px}
.card p{font-size:15px;color:var(--ink2);line-height:1.75}
.card .more{margin-top:auto;padding-top:22px;font-size:14px;font-weight:600;color:var(--ink)}
.card .more span{transition:margin .25s}
.card:hover .more span{margin-left:6px}
.card .more .red{color:var(--accent)}
.social-card{align-items:center;text-align:center;padding:46px 36px;transition:border-color .4s cubic-bezier(.4,0,.2,1),transform .4s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden;background:transparent;border:none}
.social-card .ico-bg{display:flex;align-items:center;justify-content:center;width:88px;height:88px;border-radius:50%;background:transparent;border:none;margin-bottom:30px;transition:transform .4s cubic-bezier(.4,0,.2,1)}
.social-card .ico{width:46px;height:46px;color:#fff;transition:color .3s ease}
.social-card h3{display:none}
.social-card:hover{border:none;transform:translateY(-4px)}
.social-card:hover .ico-bg{transform:scale(1.08);background:transparent}
.social-card:hover .ico{color:var(--accent)}

/* 小红书卡片：复刻影视飓风「官方账号 Channel」卡片动画
   参考 ysjf.com 真实实现：固定容器 + 内层整体上移 + 文字块 mt 40→10 + 展开区 grid 0fr→1fr 淡入 */
/* 小红书/抖音卡片：卡片本体固定高度；悬停时内容从卡片上方以浮层形式向上展开，完整显示在首屏内 */
/* 小红书 / 微信 / 抖音卡片：复刻影视飓风「官方账号」动画
   卡片固定裁剪 + 内层整体上移 + 文字块上移 + 展开区 grid 0fr→1fr 向下生长淡入
   尺寸整体缩小，保证悬停展开后仍完整落在首屏内 */
.social-card--xhs{align-self:start;padding:0;overflow:hidden}
.social-card--xhs .xhs-inner{
  width:100%;padding:14px 16px 20px;
  display:flex;flex-direction:column;align-items:center;
  transform:translateY(14px);
  transition:transform .5s cubic-bezier(.4,0,.2,1),padding-bottom .4s cubic-bezier(.4,0,.2,1);
}
.social-card--xhs .ico-bg{margin-bottom:0}
.social-card--xhs .xhs-meta{
  margin-top:16px;
  transition:margin-top .5s cubic-bezier(.4,0,.2,1);
}
.social-card--xhs .xhs-title-wrap{
  display:grid;grid-template-rows:0fr;opacity:0;
  transition:grid-template-rows .4s cubic-bezier(.4,0,.2,1),opacity .3s cubic-bezier(.4,0,.2,1);
}
.social-card--xhs .xhs-title-in{overflow:hidden;min-height:0}
.social-card--xhs .xhs-title{
  font-size:15px;font-weight:800;color:#fff;letter-spacing:-.01em;
  text-align:center;display:block;line-height:1.3;
}
.social-card--xhs .xhs-tag{
  font-size:12px;color:rgba(255,255,255,.75);letter-spacing:.02em;
  white-space:nowrap;text-align:center;display:block;margin-top:4px;
}
.social-card--xhs .xhs-reveal{
  display:grid;grid-template-rows:0fr;width:100%;
  opacity:0;padding-bottom:0;
  transition:grid-template-rows .4s cubic-bezier(.4,0,.2,1),
             opacity .3s cubic-bezier(.4,0,.2,1),
             padding-bottom .4s cubic-bezier(.4,0,.2,1);
}
.social-card--xhs .xhs-reveal__inner{
  overflow:hidden;min-height:0;
  display:flex;flex-direction:column;align-items:center;
}
.social-card--xhs .xhs-reveal__shot{
  width:100%;max-width:160px;margin:4px auto 0;border-radius:6px;display:block;
}
/* 小红书：原图是白底圆角头像，裁成圆形去掉白底 */
.social-card--xhs .xhs-shot-avatar{
  max-width:120px;aspect-ratio:1/1;border-radius:50%;
  object-fit:cover;border:none;
}
/* 抖音：圆形图，去掉强制白底/边框 */
.social-card--xhs .xhs-shot-circle{
  max-width:105px;aspect-ratio:1/1;border-radius:50%;
  object-fit:cover;border:none;
}
/* 微信：二维码 */
.social-card--wechat .ico{color:#fff}
.social-card--wechat .xhs-qrcode{max-width:155px;border:1px solid var(--line)}
/* hover：内层上移、LOGO 上浮变红、文字块上移、展开区向下生长淡入 */
.social-card--xhs:hover{border:none;transform:translateY(-4px)}
.social-card--xhs:hover .xhs-inner{transform:translateY(0);padding-bottom:6px}
.social-card--xhs:hover .ico-bg{transform:translateY(-4px) scale(1.05);background:transparent}
.social-card--xhs:hover .ico{color:var(--accent)}
.social-card--xhs:hover .xhs-meta{margin-top:8px}
.social-card--xhs:hover .xhs-title-wrap{grid-template-rows:1fr;opacity:1}
.social-card--xhs:hover .xhs-reveal{grid-template-rows:1fr;opacity:1;padding-bottom:8px}

/* 三列社交区块（小红书 / 微信 / 抖音）：上移进首屏底部留白，整体居中 */
.social-strip{position:relative;z-index:5;padding-top:0;padding-bottom:24px;margin-top:-400px}
.social-grid{max-width:1080px;margin:0 auto;grid-template-columns:repeat(3,1fr);align-items:start;gap:20px}
@media(max-width:1024px){
  .social-strip{margin-top:0;padding-top:40px}
  .social-grid{grid-template-columns:1fr;max-width:420px}
}

/* ===== product card ===== */
.pcard{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:30px;display:flex;flex-direction:column;transition:.3s;position:relative;overflow:hidden;
}
.pcard:hover{border-color:var(--ink);transform:translateY(-2px)}
.pcard .ptag{
  display:inline-block;font-size:12px;color:var(--ink2);background:var(--bg2);
  border-radius:2px;padding:3px 9px;align-self:flex-start;margin-bottom:18px;
}
.pcard h3{font-size:22px;margin-bottom:12px}
.pcard .pdesc{font-size:14.5px;color:var(--ink2);line-height:1.7}
.pcard ul{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:8px}
.pcard li{font-size:14px;color:var(--ink2);padding-left:16px;position:relative}
.pcard li::before{
  content:"";position:absolute;left:0;top:9px;width:5px;height:5px;background:var(--accent);border-radius:1px;
}
.pcard .pfoot{
  margin-top:auto;padding-top:24px;display:flex;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line);margin-top:26px;
}
.pprice{font-size:13px;color:var(--ink3)}
.pprice b{font-size:19px;color:var(--ink);font-weight:800}
.pcard .go{font-size:14px;font-weight:600;border-bottom:2px solid var(--accent);padding-bottom:2px}

/* ===== chips / industries ===== */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px}
.chip{
  border:1px solid var(--line);border-radius:2px;padding:10px 18px;font-size:14px;color:var(--ink2);
  transition:.25s;cursor:default;
}
.chip:hover{border-color:var(--ink);color:var(--ink)}
.section--dark .chip{border-color:#3a3b44;color:#c9cad0}
.section--dark .chip:hover{color:#fff}

/* ===== filters ===== */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin:36px 0 40px}
.fbtn{
  border:1px solid var(--line);background:#fff;border-radius:2px;padding:9px 18px;
  font-size:14px;color:var(--ink2);cursor:pointer;transition:.25s;
}
.fbtn:hover{border-color:var(--ink);color:var(--ink)}
.fbtn.on{background:var(--ink);border-color:var(--ink);color:#fff}

/* ===== steps ===== */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin-top:56px}
.step{padding:0 26px;border-right:1px solid #3a3b44}
.step:first-child{padding-left:0}
.step:last-child{border-right:0}
.step b{display:block;font-size:13px;color:var(--accent);letter-spacing:.08em;margin-bottom:12px}
.step h4{font-size:18px;margin-bottom:8px}
.step p{font-size:14px;color:#a8a9b1}

/* ===== faq ===== */
.faq{max-width:860px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;padding:26px 40px 26px 0;position:relative;
  font-size:18px;font-weight:700;line-height:1.5;transition:color .25s;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--accent)}
.faq summary::after{
  content:"";position:absolute;right:6px;top:34px;width:12px;height:12px;
  border-right:1.6px solid var(--ink);border-bottom:1.6px solid var(--ink);
  transform:rotate(45deg);transition:transform .3s;
}
.faq details[open] summary::after{transform:rotate(-135deg);top:38px}
.faq .fa{padding:0 40px 28px 0;font-size:16px;color:var(--ink2);line-height:1.85}
.faq .fa strong{color:var(--ink)}

/* ===== table ===== */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:#fff}
table{width:100%;border-collapse:collapse;min-width:640px}
th,td{text-align:left;padding:16px 20px;border-bottom:1px solid var(--line);font-size:15px}
th{font-size:13px;color:var(--ink3);font-weight:600;background:var(--bg2);letter-spacing:.04em}
tr:last-child td{border-bottom:0}
td b{font-weight:700}
.note{
  margin-top:20px;font-size:13px;color:var(--ink3);line-height:1.8;
  border-left:2px solid var(--accent);padding-left:14px;
}

/* ===== 价格分组（年费 / 买断 / 其他） ===== */
.price-group{margin-top:24px}
.price-group:first-of-type{margin-top:0}
.pg-head{display:flex;align-items:baseline;gap:14px;margin-bottom:10px;flex-wrap:wrap}
.pg-head h3{
  margin:0;font-size:18px;font-weight:700;color:var(--ink);
  display:inline-flex;align-items:center;gap:8px;
}
.pg-head h3::before{
  content:"";width:4px;height:18px;border-radius:2px;background:var(--accent);display:inline-block;
}
.pg-head span{font-size:13px;color:var(--ink3)}

/* ===== cta ===== */
.cta-band{background:var(--ink);color:#fff;padding:104px 0}
.cta-band h2{font-size:clamp(30px,4vw,52px);max-width:760px}
.cta-band .lead{margin-top:22px}
.cta-tel{font-size:clamp(34px,5vw,58px);font-weight:800;letter-spacing:-.02em;margin-top:40px;display:inline-block;border-bottom:3px solid var(--accent)}

/* ===== footer ===== */
.foot{background:var(--ink);color:#fff;padding:80px 0 32px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.foot h5{font-size:13px;color:#8a8b93;letter-spacing:.1em;margin-bottom:20px;font-weight:600}
.foot ul{list-style:none;display:grid;gap:12px}
.foot ul a{font-size:14.5px;color:#c9cad0;transition:color .25s}
.foot ul a:hover{color:#fff}
.foot p{font-size:14.5px;color:#a8a9b1;line-height:1.8}
.foot-social{margin-top:48px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.fs-item{
  display:flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:50%;
  background:#f0f2f4;color:var(--ink);
  transition:transform .25s ease,background .25s ease,color .25s ease,box-shadow .25s ease;
}
.fs-item svg{width:24px;height:24px;fill:currentColor;display:block}
.fs-item:hover{transform:scale(1.12) translateY(-2px);background:#fff;color:var(--accent);box-shadow:0 6px 18px rgba(0,0,0,.22)}
.fs-item:active{transform:scale(1.04)}
.foot-bot{
  margin-top:56px;padding-top:26px;border-top:1px solid #3a3b44;
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:13px;color:#8a8b93;
}
.foot .ftel{font-size:26px;font-weight:800;color:#fff;display:block;margin-bottom:10px}

/* ===== contact ===== */
.cgrid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
#cform{margin-top:-200px}
.iframe-hide-scroll{overflow:hidden;position:relative;width:100%;height:780px;border-radius:14px}
.iframe-hide-scroll iframe{position:absolute;top:0;left:0;width:calc(100% + 17px);height:100%;border:0}
.cinfo dl{display:grid;grid-template-columns:88px 1fr;gap:0;margin-top:32px;border-top:1px solid var(--line)}
.cinfo dt,.cinfo dd{padding:18px 0;border-bottom:1px solid var(--line);font-size:15px}
.cinfo dt{color:var(--ink3);font-size:14px}
.cinfo dd b{font-weight:700}
.copybtn{
  margin-left:10px;font-size:12px;border:1px solid var(--line2);border-radius:2px;
  background:#fff;padding:3px 10px;cursor:pointer;color:var(--ink2);
}
.form{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:36px}
.field{margin-bottom:20px}
.field label{display:block;font-size:13px;color:var(--ink2);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line2);border-radius:4px;padding:12px 14px;
  font-size:15px;font-family:inherit;color:var(--ink);background:#fff;outline:none;transition:border-color .25s;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--ink)}
.field textarea{min-height:104px;resize:vertical}
.form .btn{width:100%;margin-top:8px}
.formmsg{margin-top:16px;font-size:14px;color:var(--accent);display:none}
.formmsg.show{display:block}

/* ===== product detail ===== */
.crumb{font-size:13px;color:var(--ink3);padding:32px 0 0}
.crumb a:hover{color:var(--ink)}
.pdhead{padding:56px 0 72px;border-bottom:1px solid var(--line)}
.pdhead h1{font-size:clamp(34px,4.6vw,58px);margin:18px 0 20px}
.pdmeta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.pdbody{display:grid;grid-template-columns:1fr 320px;gap:64px;padding:80px 0;align-items:start}
.pdbody h2{font-size:26px;margin:56px 0 20px}
.pdbody h2:first-child{margin-top:0}
.pdbody h3{font-size:19px;margin:32px 0 14px}
.pdbody p{color:var(--ink2);line-height:1.85;margin-bottom:16px}
.pdbody ul{list-style:none;display:grid;gap:10px;margin-bottom:20px}
.pdbody ul li{padding-left:18px;position:relative;color:var(--ink2);font-size:15px}
.pdbody ul li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;background:var(--accent);border-radius:1px}
.featgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.featgrid div{background:#fff;padding:24px}
.featgrid b{display:block;font-size:15px;margin-bottom:6px}
.featgrid span{font-size:13.5px;color:var(--ink2);line-height:1.65}
.aside{position:sticky;top:96px;border:1px solid var(--line);border-radius:var(--r);padding:28px;background:#fff}
.aside h4{font-size:16px;margin-bottom:6px}
.aside .aprice{font-size:30px;font-weight:800;margin:14px 0 4px}
.aside .btn{width:100%;margin-top:16px}
.aside .alist{margin-top:22px;padding-top:20px;border-top:1px solid var(--line);display:grid;gap:12px;font-size:14px;color:var(--ink2)}
.aside .alist b{color:var(--ink);font-weight:600}

/* ===== misc ===== */
.ph{
  border-bottom:1px dashed var(--line2);color:var(--ink3);font-size:.92em;
}
.section--dark .ph{border-color:#5a5b64;color:#8a8b93}
.rv{opacity:0;transform:translateY(24px);transition:opacity .6s ease-out,transform .6s ease-out}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}}
.toast{
  position:fixed;left:50%;bottom:40px;transform:translateX(-50%) translateY(20px);
  background:var(--ink);color:#fff;font-size:14px;padding:12px 22px;border-radius:4px;
  opacity:0;pointer-events:none;transition:.3s;z-index:99;
}
.toast.show{opacity:1;transform:translateX(-50%)}

.steps.light .step{border-right-color:var(--line)}
.steps.light .step h4{color:var(--ink)}
.steps.light .step p{color:var(--ink2)}

/* ===== responsive ===== */
@media(max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:48px;padding:calc(var(--nav) + 16px) 20px 60px 20px}
  .hero .h-display{font-size:clamp(44px,9vw,72px)}
  .hero-copy{padding-top:0}
  .hero-stats{gap:40px}
  .g4{grid-template-columns:repeat(2,1fr)}
  .pdbody{grid-template-columns:1fr;gap:48px}
  .aside{position:static}
  .steps{grid-template-columns:repeat(2,1fr);gap:32px}
  .step{border-right:0;padding:0}
  .foot-grid{grid-template-columns:1fr 1fr}
  .cgrid{grid-template-columns:1fr;gap:48px}
  #cform{margin-top:0}
}
@media(max-width:820px){
  .container{padding:0 20px}
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .hero{padding:88px 0 64px}
  .hero-grid{padding-left:0;padding-right:0;padding-bottom:24px}
  .hero .h-display{font-size:clamp(40px,11vw,64px)}
  .hero-cta .btn{flex:1 1 auto;min-width:140px}
  .hero-stats{flex-direction:column;gap:16px;padding-top:20px;margin-top:40px}
  .hero-stats b{font-size:36px}
  .cta-band{padding:72px 0}
  .nav-links{
    display:none;position:absolute;left:0;right:0;top:var(--nav);background:#fff;
    border-bottom:1px solid var(--line);flex-direction:column;gap:0;padding:8px 20px 20px;
  }
  .nav.open .nav-links{display:flex}
  .nav-links a{padding:14px 0;border-bottom:1px solid var(--line);font-size:16px}
  .nav-toggle{display:block}
  .nav-right{margin-left:auto}
  .nav-tel{display:none}
  .g3,.g2{grid-template-columns:1fr}
  .featgrid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:36px}
  .faq summary{font-size:16px;padding-right:34px}
  .faq .fa{padding-right:34px}
  .pdbody{padding:56px 0}
}

/* 完整阶梯价格表：长表折叠 + 展开 */
.tbl-wrap.tbl-long{max-height:360px;overflow-y:auto;border-color:var(--line)}
.tbl-wrap.tbl-long.open{max-height:none}
.tbl-toggle{margin-top:10px;display:inline-block;font:600 13px/1 var(--font);color:var(--red,#ff1a38);background:#fff;border:1px solid var(--line);border-radius:999px;padding:9px 18px;cursor:pointer;transition:.2s}
.tbl-toggle:hover{background:var(--red,#ff1a38);color:#fff;border-color:var(--red,#ff1a38)}

/* 价格表补充说明 */
.pg-note{margin:10px 0 0;font-size:13px;line-height:1.7;color:var(--ink3)}

/* 版本功能定位说明 */
.pg-desc{margin:0 0 10px;font-size:14px;line-height:1.7;color:var(--ink2,#52555e)}

/* ===== AccordionGallery 手风琴图库（首页四大板块） ===== */
.ag{display:flex;gap:12px;height:440px}
.ag-panel{
  position:relative;flex:1;min-width:0;display:block;border-radius:14px;overflow:hidden;
  cursor:pointer;background:var(--bg2);
  transition:flex .45s cubic-bezier(.4,0,.2,1);
}
.ag-panel img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  transform:scale(1.02);transition:transform .45s cubic-bezier(.4,0,.2,1);
}
.ag-panel.on{flex:2.6}
.ag-panel.on img{transform:scale(1.05)}
.ag-shade{
  position:absolute;inset:0;display:block;
  background:linear-gradient(180deg,rgba(20,21,26,.08) 0%,rgba(20,21,26,0) 35%,rgba(20,21,26,.66) 100%);
}
.ag-text{position:absolute;left:0;right:0;bottom:0;display:block;padding:22px 24px;color:#fff}
.ag-text h3{font-size:20px;font-weight:800;letter-spacing:-.01em;margin:0 0 6px;text-shadow:0 1px 8px rgba(0,0,0,.35)}
.ag-text p{
  font-size:13.5px;line-height:1.65;color:rgba(255,255,255,.92);
  opacity:0;max-height:0;transform:translateY(6px);overflow:hidden;
  transition:opacity .35s cubic-bezier(.4,0,.2,1),max-height .4s cubic-bezier(.4,0,.2,1),transform .4s cubic-bezier(.4,0,.2,1);
  transition-delay:0s;
}
.ag-panel.on .ag-text p{opacity:1;max-height:140px;transform:none;transition-delay:.08s}
@media(max-width:1024px){
  .ag{height:380px}
}
@media(max-width:860px){
  .ag{flex-direction:column;height:auto;gap:10px}
  .ag-panel{flex:none;height:120px;transition:height .45s cubic-bezier(.4,0,.2,1)}
  .ag-panel.on{flex:none;height:330px}
  .ag-text{padding:16px 18px}
}

/* ===== Grainient 全屏渐变背景 + 深色主题（v89） ===== */
/* 背景：WebGL 画布铺满视口，内容透明叠加；#151009 为加载前/不支持 WebGL 的兜底底色 */
#grainient-bg{position:fixed;inset:0;width:100%;height:100%;z-index:-1;display:block;background:#151009}
html{background:#151009}
:root{
  --ink:#ffffff;
  --ink2:rgba(255,255,255,.78);
  --ink3:rgba(255,255,255,.52);
  --bg:transparent;
  --bg2:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.16);
  --line2:rgba(255,255,255,.32);
}
body{background:transparent;color:#fff}
.section--gray{background:transparent}
.section--dark{background:transparent;color:#fff}

/* 导航：深色背景上始终白字 */
.nav{--nav-ink:#ffffff;--nav-ink2:rgba(255,255,255,.85);text-shadow:0 1px 8px rgba(0,0,0,.35)}
@media(max-width:900px){
  .nav-links{background:rgba(16,12,8,.92);backdrop-filter:blur(10px)}
}
@media(max-width:820px){
  .nav-links{background:rgba(16,12,8,.92);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.12)}
}

/* 按钮 */
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.hero-cta .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}

/* 卡片 / 产品卡 / 面板：半透明浅白浮层 */
.card{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.14)}
/* card hover 不再加亮 CSS 白边，避免与 specular.js 高光描边重影（描边本身即 hover 高亮） */
.card .ico{color:#fff}
/* 社交三卡：完全融入背景，不带任何底色/边框 */
.social-card{background:transparent;border:none}
.social-card:hover{background:transparent;border:none}
.pcard{background:rgba(255,255,255,.05);border-color:transparent}
/* SpecularCard：高光描边画布（specular.js），覆盖全页、不拦截交互 */
#specular-fx{position:fixed;inset:0;width:100%;height:100%;z-index:60;pointer-events:none}
/* React Bits SpecularButton：目标元素 CSS 不设边框，描边完全由 WebGL 绘制 */
.pcard,.card:not(.social-card),.chip,.hero-cta .btn,.ag-panel{border:none!important}
.pcard .ptag{background:rgba(255,255,255,.09);color:rgba(255,255,255,.75)}
.social-card--wechat .xhs-qrcode{border-color:rgba(255,255,255,.2)}

/* 筛选按钮 */
.fbtn{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.16);color:rgba(255,255,255,.78)}
.fbtn:hover{border-color:rgba(255,255,255,.55);color:#fff}
.fbtn.on{background:#fff;border-color:#fff;color:#151009}

/* 表格 / 价格表 */
.tbl-wrap{background:rgba(20,14,9,.42)}
.tbl-wrap.tbl-long{background:rgba(20,14,9,.42)}
th{background:rgba(255,255,255,.07);color:rgba(255,255,255,.6)}
.tbl-toggle{background:transparent;border-color:rgba(255,255,255,.3);color:#ff5c74}
.tbl-toggle:hover{background:#ff1a38;color:#fff;border-color:#ff1a38}

/* 表单 / 输入 */
.form{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.14)}
.field input,.field select,.field textarea{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.28);color:#fff}
.field input:focus,.field select:focus,.field textarea:focus{border-color:rgba(255,255,255,.7)}
.field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.38)}
select option{color:#24252c;background:#fff}
.copybtn{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.3);color:rgba(255,255,255,.8)}

/* 产品详情 */
.featgrid{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.14)}
.featgrid div{background:#1b130c}
.aside{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.14)}
.aside .alist b{color:#fff}

/* 页脚：去黑底，透明融入背景 */
.foot{background:transparent;border-top:1px solid rgba(255,255,255,.14);padding:64px 0 32px}
.fs-item{background:rgba(255,255,255,.1);color:#fff}
.fs-item:hover{background:#fff;color:#ff1a38}

/* 杂项 */
.toast{background:rgba(255,255,255,.95);color:#151009}
.ag-panel{background:rgba(255,255,255,.06)}
.step p{color:rgba(255,255,255,.7)}

/* ===== 行业案例（v96） ===== */
.case-card{cursor:pointer}
.case-sol{
  margin-top:18px;font-size:13.5px;line-height:1.7;color:rgba(255,255,255,.88);
  border-left:2px solid var(--accent);padding-left:12px;
}
.case-card .pfoot{margin-top:24px}
.cmodal{position:fixed;inset:0;z-index:2000;display:flex;align-items:center;justify-content:center;padding:24px}
.cmodal[hidden]{display:none}
.cmodal-mask{position:absolute;inset:0;background:rgba(8,6,4,.74);backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px)}
.cmodal-card{
  position:relative;max-width:760px;width:100%;max-height:82vh;overflow-y:auto;
  background:#1b130c;border:1px solid rgba(255,255,255,.18);border-radius:14px;padding:38px 42px;
  box-shadow:0 24px 80px rgba(0,0,0,.5);
}
.cmodal-x{
  position:absolute;top:14px;right:16px;width:36px;height:36px;border-radius:50%;
  border:1px solid rgba(255,255,255,.22);background:transparent;color:#fff;font-size:18px;line-height:1;
  cursor:pointer;transition:.2s;
}
.cmodal-x:hover{background:#ff1a38;border-color:#ff1a38}
.cmodal-card .ptag{display:inline-block;font-size:12px;color:rgba(255,255,255,.75);background:rgba(255,255,255,.09);border-radius:2px;padding:3px 9px}
.cmodal-card h3{font-size:24px;margin:12px 0 12px}
.cmodal-card > div > p{color:rgba(255,255,255,.8);font-size:14.5px;line-height:1.85}
.cmodal-card h4{font-size:15px;font-weight:700;margin:24px 0 10px;color:var(--accent);letter-spacing:.02em}
.cmodal-card ul{list-style:none;display:grid;gap:8px;margin:0;padding:0}
.cmodal-card ul li{font-size:14.5px;color:rgba(255,255,255,.82);padding-left:16px;position:relative;line-height:1.75}
.cmodal-card ul li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;background:var(--accent);border-radius:1px}
.cmodal-sol{
  display:inline-block;font-size:14px;font-weight:600;color:#fff;
  background:rgba(255,26,56,.14);border:1px solid rgba(255,26,56,.4);border-radius:6px;padding:8px 14px;
}
@media(max-width:820px){
  .cmodal{padding:14px}
  .cmodal-card{padding:26px 22px;max-height:86vh}
}

/* ===== 移动端深度优化（v109） ===== */
/* 平板/手机：社交卡在桌面端被上移压进首屏，移动端恢复正常流后，核心能力区遗留的 240px 内联大留白要清掉 */
@media(max-width:1024px){
  section[style*="margin-top:240px"]{margin-top:0!important}
}
/* 触屏设备：社交卡（小红书/微信/抖音）默认展开，否则微信二维码等 hover 内容在手机上永远看不到 */
@media(max-width:820px){
  .social-card--xhs .xhs-inner{transform:translateY(0);padding-bottom:10px}
  .social-card--xhs .xhs-meta{margin-top:12px}
  .social-card--xhs .xhs-title-wrap{grid-template-rows:1fr;opacity:1}
  .social-card--xhs .xhs-reveal{grid-template-rows:1fr;opacity:1;padding-bottom:10px}
  /* 联系表单 iframe 跟随容器高度并允许内滚，避免移动端被固定 780px 截断 */
  .iframe-hide-scroll{height:78vh;overflow-y:auto}
}
/* 小屏手机（≤560）：卡片单列、流程竖向、按钮整行，便于拇指操作 */
@media(max-width:560px){
  .g4{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:0}
  .step{padding:18px 0;border-bottom:1px solid rgba(255,255,255,.14)}
  .step:last-child{border-bottom:0}
  .hero-cta{flex-direction:column;gap:12px}
  .hero-cta .btn{width:100%;flex:none}
}
/* 超小屏（≤480）：导航品牌收起副标题防溢出，标题再缩一档 */
@media(max-width:480px){
  .brand-txt em{display:none}
  .brand-txt{font-size:18px}
  .hero .h-display{font-size:clamp(32px,9.5vw,44px);line-height:1.05}
  .hero .lead{font-size:16px}
  .section{padding:60px 0}
  .section--tight{padding:48px 0}
}

/* 金数据表单卡片化：跨域 iframe 无法改内部底色，做成设计感白卡融入深色背景（v97） */
.form-embed{
  max-width:600px;border-radius:14px;overflow:hidden;
  border:1px solid rgba(255,255,255,.2);
  box-shadow:0 24px 80px rgba(0,0,0,.5), 0 4px 18px rgba(0,0,0,.35);
  background:#fff;
}