/* =========================================================
   合肥环聚深科数字科技有限公司 — 官网样式表
   设计系统：暖米白底 + 深蓝主色 + 金铜点缀
   ========================================================= */

:root{
  --bg:#F8F5EF;
  --bg-2:#FFFFFF;
  --bg-3:#F2EDE3;
  --ink:#0E2740;
  --ink-2:#4A596B;
  --ink-3:#8A94A3;
  --navy:#123258;
  --navy-d:#0A1F38;
  --navy-l:#1E4A7A;
  --gold:#C0962F;
  --gold-d:#8A6A18;
  --gold-l:#FBF4E0;
  --line:#E5DCCB;
  --line-2:#EFE9DD;
  --radius:14px;
  --radius-lg:22px;
  --sans:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --shadow-s:0 4px 16px rgba(14,39,64,.05);
  --shadow-m:0 14px 38px rgba(14,39,64,.08);
  --shadow-l:0 24px 60px rgba(14,39,64,.12);
  --wrap:1200px;
}

*{margin:0;padding:0;box-sizing:border-box;}

html{scroll-behavior:smooth;}

body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--ink);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 32px;}

/* ---------- 排版 ---------- */
h1,h2,h3,h4{line-height:1.3;font-weight:700;letter-spacing:-.01em;}
.h1{font-size:52px;}
.h2{font-size:38px;}
.h3{font-size:24px;}
.h4{font-size:19px;}
.lead{font-size:19px;color:var(--ink-2);line-height:1.85;}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:14px;font-weight:700;letter-spacing:.18em;color:var(--gold-d);
  text-transform:uppercase;margin-bottom:18px;
}
.eyebrow::before{content:"";width:10px;height:10px;background:var(--gold);}

.sec-head{max-width:760px;margin-bottom:56px;}
.sec-head .h2{margin-bottom:18px;}
.sec-head p{font-size:18px;color:var(--ink-2);line-height:1.85;}

section{padding:96px 0;}
.sec-tint{background:var(--bg-3);}
.sec-dark{background:var(--navy);color:#fff;}
.sec-dark .h2,.sec-dark h3{color:#fff;}
.sec-dark p{color:rgba(255,255,255,.78);}

/* ---------- 导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(248,245,239,.86);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:box-shadow .3s,border-color .3s,background .3s;
}
.nav.scrolled{
  background:rgba(255,255,255,.95);
  border-bottom-color:var(--line);
  box-shadow:0 4px 24px rgba(14,39,64,.06);
}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:76px;}

.logo{display:flex;align-items:center;gap:11px;}
.logo-mark{
  display:block;width:42px;height:42px;flex:0 0 auto;
  object-fit:contain;
}
.logo-text{display:flex;flex-direction:column;line-height:1.1;}
/* 品牌名用公司全称（14 字），字号按可用宽度分档收窄，见下方媒体查询 */
.logo-text b{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--navy);white-space:nowrap;}
.logo-text em{font-style:normal;font-size:9.5px;letter-spacing:.16em;color:var(--ink-3);margin-top:3px;}

.nav-links{display:flex;align-items:center;gap:34px;}
.nav-links a{
  font-size:15.5px;color:var(--ink-2);font-weight:500;
  padding:6px 0;border-bottom:2px solid transparent;transition:color .2s,border-color .2s;
}
.nav-links a:hover{color:var(--navy);}
.nav-links a.on{color:var(--navy);font-weight:700;border-bottom-color:var(--gold);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:10px;font-size:15.5px;font-weight:700;
  transition:transform .18s,box-shadow .18s,background .18s,border-color .18s;
  white-space:nowrap;
}
.btn-primary{background:var(--navy);color:#fff;box-shadow:0 8px 22px rgba(18,50,88,.22);}
.btn-primary:hover{background:var(--navy-l);transform:translateY(-2px);box-shadow:0 12px 28px rgba(18,50,88,.28);}
.btn-ghost{border:1.5px solid var(--line);color:var(--navy);background:rgba(255,255,255,.6);}
.btn-ghost:hover{border-color:var(--navy);transform:translateY(-2px);}
.btn-gold{background:var(--gold);color:#fff;box-shadow:0 8px 22px rgba(192,150,47,.3);}
.btn-gold:hover{background:#B0861F;transform:translateY(-2px);}
.btn-lg{padding:16px 34px;font-size:17px;}
.btn .ar{transition:transform .2s;}
.btn:hover .ar{transform:translateX(4px);}

.burger{display:none;width:44px;height:44px;flex-direction:column;justify-content:center;gap:5px;padding:0 10px;}
.burger span{display:block;height:2px;background:var(--navy);border-radius:2px;transition:transform .25s,opacity .25s;}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger.open span:nth-child(2){opacity:0;}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mnav{
  display:none;position:fixed;top:76px;left:0;right:0;bottom:0;z-index:99;
  background:var(--bg);padding:28px 32px;overflow-y:auto;
}
.mnav.open{display:block;}
.mnav a{display:block;padding:16px 0;font-size:19px;font-weight:600;border-bottom:1px solid var(--line);color:var(--ink);}
.mnav .btn{width:100%;margin-top:26px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:160px 0 90px;overflow:hidden;
  background:linear-gradient(158deg,#FBF9F4 0%,#F4EEE2 60%,#F0E8D9 100%);
}
.hero-glow{
  position:absolute;top:-360px;right:-300px;width:1100px;height:1100px;
  background:radial-gradient(circle at 50% 50%,rgba(192,150,47,.20) 0%,rgba(192,150,47,0) 60%);
  pointer-events:none;
}
.hero-glow2{
  position:absolute;bottom:-420px;left:-380px;width:1000px;height:1000px;
  background:radial-gradient(circle at 50% 50%,rgba(18,50,88,.10) 0%,rgba(18,50,88,0) 62%);
  pointer-events:none;
}
.hero-in{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center;}
.hero .h1{margin-bottom:24px;}
.hero .h1 .hl{
  color:var(--gold-d);
  border-bottom:7px solid var(--gold);
  padding-bottom:4px;
}
.hero-lead{font-size:19px;color:var(--ink-2);line-height:1.9;margin-bottom:34px;max-width:560px;}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px;}
.hero-facts{display:flex;gap:12px;flex-wrap:wrap;}
.hero-facts span{
  font-size:14px;color:var(--ink-2);background:rgba(255,255,255,.75);
  border:1px solid var(--line);border-radius:999px;padding:7px 15px;
}
.hero-facts b{color:var(--navy);}

/* AI 对话示意卡 */
.aicard{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--shadow-l);
}
.aicard-top{display:flex;align-items:center;gap:8px;padding-bottom:16px;border-bottom:1px solid var(--line-2);margin-bottom:20px;}
.aicard-top i{width:10px;height:10px;border-radius:50%;background:#E2DACB;}
.aicard-top i:nth-child(2){background:#D6CCB8;}
.aicard-top i:nth-child(3){background:var(--gold);opacity:.6;}
.aicard-top span{margin-left:8px;font-size:13px;color:var(--ink-3);letter-spacing:.05em;}

.qa{margin-bottom:20px;}
.qa-user{
  margin-left:auto;max-width:88%;width:fit-content;
  background:var(--bg-3);border-radius:12px 12px 3px 12px;
  padding:13px 17px;font-size:14.5px;color:var(--ink-2);
}
.qa-user b{display:block;font-size:12px;color:var(--ink-3);font-weight:600;margin-bottom:4px;letter-spacing:.05em;}
.qa-ai{margin-top:18px;}
.qa-ai .who{display:flex;align-items:center;gap:8px;font-size:12px;font-weight:700;color:var(--gold-d);margin-bottom:10px;letter-spacing:.05em;}
.qa-ai .who i{width:8px;height:8px;border-radius:50%;background:var(--gold);}
.qa-ai p{font-size:14.5px;color:var(--ink-2);line-height:1.75;margin-bottom:12px;}

.ranklist{display:flex;flex-direction:column;gap:9px;margin-bottom:16px;}
.ranklist div{
  display:flex;align-items:center;gap:11px;
  background:var(--bg-3);border:1px solid var(--line-2);border-radius:10px;
  padding:11px 15px;font-size:14.5px;color:var(--ink-2);
}
.ranklist div i{
  width:21px;height:21px;flex:0 0 auto;border-radius:50%;background:#E3DCCE;color:#fff;
  font-size:11px;font-style:normal;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.ranklist div.me{
  background:var(--gold-l);border:2px solid var(--gold);color:var(--gold-d);font-weight:700;
  box-shadow:0 6px 18px rgba(192,150,47,.2);
}
.ranklist div.me i{background:var(--gold);}
.ranklist div.me span.tag{
  margin-left:auto;font-size:11.5px;background:var(--gold);color:#fff;
  border-radius:6px;padding:3px 9px;letter-spacing:.04em;
}
.qa-src{font-size:12px;color:var(--ink-3);padding-top:14px;border-top:1px dashed var(--line);letter-spacing:.02em;}

/* ---------- 数据条 ---------- */
.numbers{background:var(--navy);padding:64px 0;position:relative;overflow:hidden;}
.numbers::after{
  content:"";position:absolute;top:-260px;right:-200px;width:760px;height:760px;
  background:radial-gradient(circle at 50% 50%,rgba(192,150,47,.16) 0%,rgba(192,150,47,0) 62%);
  pointer-events:none;
}
.numbers-in{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:32px;}
.num{text-align:center;padding:0 12px;}
.num b{display:block;font-size:46px;font-weight:700;color:#fff;line-height:1.1;letter-spacing:-.02em;}
.num b em{font-style:normal;font-size:22px;color:var(--gold);margin-left:3px;}
.num span{display:block;font-size:14.5px;color:rgba(255,255,255,.62);margin-top:12px;line-height:1.6;}

/* ---------- 通用卡片 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:34px 30px;transition:transform .25s,box-shadow .25s,border-color .25s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:#DCD0B8;}
.card .no{
  font-size:15px;font-weight:700;color:var(--gold);letter-spacing:.1em;
  display:block;margin-bottom:16px;
}
.card h3{font-size:20px;margin-bottom:12px;color:var(--navy);}
.card p{font-size:15.5px;color:var(--ink-2);line-height:1.8;}

/* ---------- 对比（场景） ---------- */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:#fff;}
.scene > div{padding:38px 34px;}
.scene .old{background:var(--bg-3);border-right:1px solid var(--line);}
.scene .now{background:#fff;}
.scene h4{font-size:15px;letter-spacing:.1em;color:var(--ink-3);margin-bottom:20px;font-weight:700;}
.scene .now h4{color:var(--gold-d);}
.scene .quote{font-size:19px;line-height:1.7;color:var(--ink);font-weight:600;margin-bottom:16px;}
.scene .now .quote{color:var(--navy);}
.scene p{font-size:15px;color:var(--ink-2);line-height:1.8;}

/* ---------- 六步法 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;position:relative;transition:transform .25s,box-shadow .25s;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);}
.step .sn{
  font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--gold);
  display:block;margin-bottom:14px;
}
.step h3{font-size:19px;color:var(--navy);margin-bottom:10px;}
.step p{font-size:15px;color:var(--ink-2);line-height:1.8;margin-bottom:14px;}
.step .out{
  font-size:13.5px;color:var(--ink-3);padding-top:14px;border-top:1px dashed var(--line);
  line-height:1.65;
}
.step .out b{color:var(--gold-d);font-weight:700;}

/* 六步法详解（方法页） */
.mstep{
  display:grid;grid-template-columns:96px 1fr;gap:32px;
  padding:40px 0;border-bottom:1px solid var(--line);
}
.mstep:last-child{border-bottom:0;}
.mstep .idx{
  font-size:44px;font-weight:700;color:var(--line);line-height:1;letter-spacing:-.03em;
}
.mstep h3{font-size:25px;color:var(--navy);margin-bottom:14px;}
.mstep p{font-size:16px;color:var(--ink-2);line-height:1.85;margin-bottom:14px;}
.mstep ul{margin:16px 0 0;}
.mstep ul li{
  position:relative;padding-left:22px;font-size:15.5px;color:var(--ink-2);
  line-height:1.8;margin-bottom:9px;
}
.mstep ul li::before{content:"";position:absolute;left:0;top:12px;width:7px;height:7px;background:var(--gold);border-radius:1px;}
.deliver{
  display:inline-flex;align-items:center;gap:10px;margin-top:16px;
  background:var(--gold-l);border:1px solid #E4CF9A;border-radius:9px;
  padding:10px 16px;font-size:14.5px;color:var(--gold-d);font-weight:700;
}

/* ---------- 表格 ---------- */
.rtable{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;}
.rtable th{
  background:var(--navy);color:#fff;font-size:14.5px;font-weight:700;text-align:left;
  padding:16px 20px;letter-spacing:.04em;white-space:nowrap;
}
.rtable td{
  padding:16px 20px;font-size:15px;color:var(--ink-2);
  border-bottom:1px solid var(--line-2);vertical-align:top;line-height:1.7;
}
.rtable tr:last-child td{border-bottom:0;}
.rtable tbody tr:hover{background:#FCFAF6;}
.rtable td:first-child{color:var(--ink);font-weight:600;}
.rtable .hl{color:var(--gold-d);font-weight:700;}

/* ---------- 交付物 / 指标 ---------- */
.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.metrics.cols-2{grid-template-columns:repeat(2,1fr);}
.metric{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;
  border-left:4px solid var(--gold);
}
.metric h4{font-size:19px;color:var(--navy);margin-bottom:10px;}
.metric p{font-size:15px;color:var(--ink-2);line-height:1.8;}

/* ---------- 提示条 ---------- */
.note{
  display:flex;gap:14px;align-items:flex-start;
  background:#FCFAF4;border:1px solid var(--line);border-left:4px solid var(--gold);
  border-radius:10px;padding:20px 24px;font-size:15px;color:var(--ink-2);line-height:1.8;
}
.note b{color:var(--navy);}

.disclaim{
  font-size:13.5px;color:var(--ink-3);line-height:1.75;
  padding-top:18px;margin-top:24px;border-top:1px dashed var(--line);
}

/* ---------- CTA ---------- */
.cta{
  background:var(--navy);color:#fff;border-radius:var(--radius-lg);
  padding:60px 56px;position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:48px;
}
.cta::after{
  content:"";position:absolute;top:-200px;right:-160px;width:620px;height:620px;
  background:radial-gradient(circle at 50% 50%,rgba(192,150,47,.22) 0%,rgba(192,150,47,0) 62%);
  pointer-events:none;
}
.cta-in{position:relative;max-width:640px;}
.cta h2{font-size:34px;color:#fff;margin-bottom:16px;}
.cta p{font-size:17px;color:rgba(255,255,255,.76);line-height:1.85;}
.cta-btns{position:relative;display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页头（内页） ---------- */
.pagehead{
  position:relative;padding:150px 0 72px;overflow:hidden;
  background:linear-gradient(158deg,#FBF9F4 0%,#F4EEE2 100%);
  border-bottom:1px solid var(--line);
}
.pagehead .h1{font-size:44px;margin-bottom:18px;}
.pagehead p{font-size:18px;color:var(--ink-2);max-width:760px;line-height:1.85;}
.pagehead .hero-glow{top:-420px;}
.crumb{font-size:14px;color:var(--ink-3);margin-bottom:20px;letter-spacing:.03em;}
.crumb a:hover{color:var(--navy);}

/* ---------- 服务页 ---------- */
.flows{display:flex;flex-direction:column;gap:0;}
.flow{
  display:grid;grid-template-columns:64px 1fr;gap:26px;padding:32px 0;
  border-bottom:1px solid var(--line);
}
.flow:last-child{border-bottom:0;}
.flow .fn{
  width:52px;height:52px;border-radius:50%;background:var(--gold-l);border:1px solid #E4CF9A;
  color:var(--gold-d);font-weight:700;font-size:17px;
  display:flex;align-items:center;justify-content:center;
}
.flow h3{font-size:21px;color:var(--navy);margin-bottom:10px;}
.flow p{font-size:15.5px;color:var(--ink-2);line-height:1.85;}

/* ---------- 联系页 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.cbox{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 30px;
}
.cbox .cl{font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--ink-3);margin-bottom:14px;text-transform:uppercase;}
.cbox .cv{font-size:27px;font-weight:700;color:var(--navy);letter-spacing:.01em;word-break:break-all;line-height:1.4;}
.cbox .cn{font-size:14.5px;color:var(--ink-3);margin-top:12px;line-height:1.7;}
.cbox a.cv:hover{color:var(--gold-d);}

.qr{
  width:168px;height:168px;flex:0 0 auto;
  border:1px solid var(--line);border-radius:14px;
  background:#fff;padding:9px;
  box-shadow:0 8px 22px rgba(18,50,88,.07);
}
.qr img{display:block;width:100%;height:100%;object-fit:contain;}

/* 页脚二维码 */
.fqr{
  display:flex;align-items:center;gap:14px;margin-top:18px;
}
.fqr img{
  width:84px;height:84px;flex:0 0 auto;display:block;
  background:#fff;border-radius:8px;padding:5px;
}
.fqr span{font-size:13.5px;line-height:1.7;color:rgba(255,255,255,.6);}

.faq{border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden;}
.faq details{border-bottom:1px solid var(--line-2);}
.faq details:last-child{border-bottom:0;}
.faq summary{
  padding:22px 30px;font-size:17px;font-weight:600;color:var(--navy);
  cursor:pointer;list-style:none;display:flex;align-items:center;gap:14px;
  transition:background .2s;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::before{
  content:"";width:7px;height:7px;background:var(--gold);border-radius:1px;flex:0 0 auto;
  transition:transform .2s;
}
.faq summary:hover{background:#FCFAF6;}
.faq details[open] summary{background:#FCFAF6;}
.faq .ans{padding:0 30px 24px 51px;font-size:15.5px;color:var(--ink-2);line-height:1.85;}

/* ---------- 表单 ---------- */
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:36px 32px;}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:14px;font-weight:600;color:var(--ink-2);}
.field input,.field select,.field textarea{
  font-family:inherit;font-size:15.5px;color:var(--ink);
  padding:13px 15px;border:1px solid var(--line);border-radius:9px;background:var(--bg);
  transition:border-color .2s,box-shadow .2s;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--gold);background:#fff;
  box-shadow:0 0 0 3px rgba(192,150,47,.12);
}
.field textarea{resize:vertical;min-height:110px;}
.form .btn{width:100%;margin-top:8px;}
.form .tip{font-size:13px;color:var(--ink-3);margin-top:14px;text-align:center;line-height:1.7;}

/* ---------- 页脚 ---------- */
.footer{background:var(--navy-d);color:rgba(255,255,255,.66);padding:70px 0 34px;margin-top:0;}
.footer-in{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:44px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.1);}
.footer .logo-text b{color:#fff;}
.footer .logo-text em{color:rgba(255,255,255,.42);}
.footer .logo-mark{width:38px;height:38px;}
.footer .fdesc{font-size:14.5px;line-height:1.85;margin-top:20px;color:rgba(255,255,255,.6);max-width:340px;}
.footer h5{font-size:14px;color:#fff;font-weight:700;margin-bottom:20px;letter-spacing:.08em;}
.footer li{margin-bottom:12px;}
.footer li a{font-size:14.5px;color:rgba(255,255,255,.66);transition:color .2s;}
.footer li a:hover{color:var(--gold);}
.footer .fcat{font-size:14.5px;line-height:2;color:rgba(255,255,255,.6);}
.footer .fcat b{color:rgba(255,255,255,.86);font-weight:600;}
.footer-bot{
  padding-top:26px;display:flex;align-items:center;justify-content:space-between;
  gap:24px;flex-wrap:wrap;font-size:13.5px;color:rgba(255,255,255,.44);
}
.footer-bot .pol a{color:rgba(255,255,255,.44);}
.footer-bot .pol a:hover{color:var(--gold);}

/* ---------- 滚动淡入 ---------- */
.rv{transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1);}
html.js .rv{opacity:0;transform:translateY(26px);}
html.js .rv.in{opacity:1;transform:none;}
.rv.d1{transition-delay:.08s;}
.rv.d2{transition-delay:.16s;}
.rv.d3{transition-delay:.24s;}
.rv.d4{transition-delay:.32s;}

/* 待补充标记 */
.ph{
  color:var(--gold-d);border-bottom:2px dashed var(--gold);
  padding-bottom:1px;cursor:help;
}

.mt-8{margin-top:8px;}.mt-16{margin-top:16px;}.mt-24{margin-top:24px;}
.mt-32{margin-top:32px;}.mt-48{margin-top:48px;}.mt-64{margin-top:64px;}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1080px){
  .wrap{padding:0 26px;}
  /* 全称品牌名与导航菜单同屏竞争宽度，此处收紧字号与菜单间距 */
  .logo-mark{width:36px;height:36px;}
  .logo-text b{font-size:13.5px;letter-spacing:.01em;}
  .logo-text em{font-size:8.5px;letter-spacing:.12em;}
  .nav-links{gap:22px;}
  .h1{font-size:44px;}
  .h2{font-size:32px;}
  .hero{padding:140px 0 70px;}
  .hero-in{grid-template-columns:1fr;gap:48px;}
  .hero-lead{max-width:none;}
  .grid-3,.steps{grid-template-columns:repeat(2,1fr);}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .footer-in{grid-template-columns:1fr 1fr;gap:36px;}
  .numbers-in{grid-template-columns:repeat(2,1fr);gap:40px 24px;}
  .cta{flex-direction:column;align-items:flex-start;padding:48px 40px;}
  .pagehead .h1{font-size:36px;}
  .mstep{grid-template-columns:1fr;gap:14px;}
  .mstep .idx{font-size:34px;}
}

@media (max-width:900px){
  /* 菜单收起后导航只剩品牌名 + 汉堡，宽度宽裕，字号回调 */
  .logo-text b{font-size:15px;}
  .nav-links{display:none;}
  .burger{display:flex;}
  .nav-in .btn{display:none;}
  .grid-3,.steps,.metrics,.metrics.cols-2{grid-template-columns:1fr;}
  .scene{grid-template-columns:1fr;}
  .scene .old{border-right:0;border-bottom:1px solid var(--line);}
  .contact-grid{grid-template-columns:1fr;}
  .frow{grid-template-columns:1fr;}
  section{padding:70px 0;}
  .sec-head{margin-bottom:40px;}
}

@media (max-width:760px){
  .wrap{padding:0 20px;}
  .h1{font-size:33px;}
  .h2{font-size:26px;}
  .h3{font-size:20px;}
  .hero{padding:124px 0 56px;}
  .hero .h1 .hl{border-bottom-width:5px;}
  .hero-lead{font-size:17px;}
  .hero-btns .btn{width:100%;}
  .numbers-in{grid-template-columns:1fr;gap:34px;}
  .num b{font-size:38px;}
  .aicard{padding:20px;}
  .cta{padding:38px 26px;border-radius:18px;}
  .cta h2{font-size:26px;}
  .cta-btns{width:100%;}
  .cta-btns .btn{width:100%;}
  .pagehead{padding:120px 0 52px;}
  .pagehead .h1{font-size:29px;}
  .logo-text b{font-size:13px;}
  .card,.cbox,.metric,.step{padding:26px 22px;}
  .footer-in{grid-template-columns:1fr;gap:32px;}
  .footer{padding:52px 0 28px;}
  .rtable th,.rtable td{padding:13px 15px;font-size:14px;}
  .mstep .idx{font-size:28px;}
  .mstep h3{font-size:21px;}
  .cbox .cv{font-size:23px;}
}

/* 表格移动端转卡片 */
@media (max-width:860px){
  .rtable thead{display:none;}
  .rtable{border:0;background:transparent;}
  .rtable tr{
    display:block;background:#fff;border:1px solid var(--line);
    border-radius:var(--radius);margin-bottom:16px;padding:22px 20px;
  }
  .rtable td{
    display:flex;gap:14px;padding:7px 0;border:0;font-size:14.5px;
  }
  .rtable td:before{
    content:attr(data-l);flex:0 0 84px;color:var(--ink-3);font-size:13.5px;
    font-weight:600;line-height:1.7;
  }
  .rtable td:first-child{
    display:block;padding-bottom:12px;margin-bottom:8px;
    border-bottom:1px dashed var(--line);font-size:16px;font-weight:700;color:var(--navy);
  }
  .rtable td:first-child:before{display:none;}
}

/* 仅在宽屏生效的规则（避免用重置被高权重选择器压过） */
@media (min-width:861px){
  .rtable td .only-m{display:none;}
}