/* 润道官网 · 全站共用层 —— nav / footer / 按钮 / 表单 / 区块 / 版式变量
   首页与子页都加载这一份。只放两边定义完全一致的规则。 */

:root{
  --bg:#ffffff;
  --bg-2:#F7F8FA;
  --ink:#0F1222;
  --txt:#3B4256;
  --mut:#6B7280;
  --dim:#9AA1AF;
  --line:rgba(15,23,42,.1);
  --line-2:rgba(15,23,42,.06);
  --blue:#0E63FF;
  --blue-deep:#0B4FD6;
  --blue-pale:#EAF1FF;
  --blue-950:#162456;
  --mono:ui-monospace,"SF Mono","JetBrains Mono",Consolas,"Liberation Mono",monospace;
  --ease:cubic-bezier(.16,1,.3,1);
  --sh:0 1px 2px rgba(15,23,42,.05),0 8px 24px -12px rgba(15,23,42,.12);
  --sh-lg:0 2px 4px rgba(15,23,42,.04),0 24px 48px -20px rgba(14,99,255,.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;
  background:var(--bg);color:var(--txt);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{text-decoration:none;color:inherit}
img{max-width:100%}
button{font-family:inherit;cursor:pointer}
.wrap{max-width:1200px;margin:0 auto;padding:0 32px}
.tnum{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
/* ————— graph-paper grid background ————— */
.grid-bg{
  position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:linear-gradient(rgba(15,23,42,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(15,23,42,.045) 1px,transparent 1px);
  background-size:54px 54px;
  -webkit-mask-image:linear-gradient(to bottom,#000 0%,transparent 720px);
  mask-image:linear-gradient(to bottom,#000 0%,transparent 720px);
}
/* ————— shared bits ————— */
.sep{border:0;height:1px;max-width:1200px;margin:0 auto;background:var(--line-2)}
.slabel{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--blue);display:inline-flex;align-items:center;gap:10px;margin-bottom:18px;
}
.slabel::before{content:"";width:26px;height:1px;background:var(--blue)}
.gt{color:var(--blue)}
/* ————— reveal ————— */
.rv{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.rv.in{opacity:1;transform:none}
.rv-d1{transition-delay:.08s}
.rv-d2{transition-delay:.16s}
/* ————— nav ————— */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .4s,box-shadow .4s,border-color .4s;border-bottom:1px solid transparent}
.nav.scrolled{background:rgba(255,255,255,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom-color:var(--line-2)}
.nav-in{max-width:1200px;margin:0 auto;padding:0 32px;height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand svg{width:28px;height:28px}
.logo-img{height:44px;width:auto;display:block}
.brand span{font-weight:800;font-size:17px;color:var(--ink);letter-spacing:.01em;white-space:nowrap}
.brand small{display:block;font-family:var(--mono);font-size:9px;letter-spacing:.22em;color:var(--dim);font-weight:400;margin-top:1px}
.nav-links{display:flex;gap:34px}
.nav-links a{font-size:14.5px;color:var(--mut);transition:color .3s;position:relative}
.nav-links a:hover{color:var(--ink)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-5px;width:0;height:2px;background:var(--blue);transition:width .35s var(--ease)}
.nav-links a:hover::after{width:100%}
.nav-cta{display:flex;align-items:center;gap:12px;flex-shrink:0}
.btn-p,.btn-g{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:14.5px;border-radius:10px;padding:12px 22px;transition:transform .35s var(--ease),box-shadow .35s,background .3s,border-color .3s;white-space:nowrap}
.btn-p{background:var(--blue);color:#fff;box-shadow:0 6px 18px -6px rgba(14,99,255,.45)}
.btn-p:hover{transform:translateY(-2px);background:var(--blue-deep);box-shadow:0 12px 26px -8px rgba(14,99,255,.5)}
.btn-g{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn-g:hover{transform:translateY(-2px);border-color:rgba(14,99,255,.4);color:var(--blue)}
.nav-cta .btn-g{font-family:var(--mono);font-size:13px;padding:11px 18px}
.burger{display:none;background:#fff;border:1px solid var(--line);border-radius:8px;padding:9px 14px;font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--ink)}
.mmenu{display:none;position:fixed;top:72px;left:0;right:0;z-index:99;background:#fff;border-bottom:1px solid var(--line);padding:12px 32px 24px;flex-direction:column}
.mmenu.open{display:flex}
.mmenu a{padding:15px 0;border-bottom:1px solid var(--line-2);font-size:17px;font-weight:600;color:var(--ink);display:flex;justify-content:space-between;align-items:baseline}
.mmenu a sup{font-family:var(--mono);font-size:10px;color:var(--dim);letter-spacing:.1em}
/* ————— stats ————— */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:var(--sh);overflow:hidden}
.stats>div{padding:34px 26px;text-align:center;border-right:1px solid var(--line-2)}
.stats>div:last-child{border-right:0}
.stats b{display:block;font-size:40px;font-weight:800;color:var(--ink);letter-spacing:-.02em}
.stats b i{font-style:normal;font-size:19px;color:var(--blue);margin-left:3px;font-weight:700}
.stats .lbl{margin-top:8px;display:block;font-size:13px;color:var(--mut)}
/* ————— sections ————— */
.sec{padding:110px 0}
.sec-head{max-width:640px;margin-bottom:56px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head.center .slabel{justify-content:center}
.sec-head h2{font-size:clamp(28px,3.6vw,44px);font-weight:800;letter-spacing:-.02em;color:var(--ink);line-height:1.25}
.sec-head p{margin-top:16px;font-size:15.5px;line-height:1.9;color:var(--mut)}
/* services */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.svc{background:#fff;border:1px solid var(--line);border-radius:16px;padding:32px 28px;transition:transform .45s var(--ease),box-shadow .45s,border-color .3s;display:flex;flex-direction:column}
.svc:hover{transform:translateY(-5px);box-shadow:var(--sh-lg);border-color:rgba(14,99,255,.35)}
.svc .ic{width:46px;height:46px;border-radius:12px;background:var(--blue-pale);display:flex;align-items:center;justify-content:center;margin-bottom:22px}
/* 服务卡图标来自 Tabler Icons v3.26.0（MIT），24x24 viewBox 与实际显示尺寸一致，
   描边取 1.75 而非 Tabler 默认的 2，以贴合站内细线语言。颜色在此统一给，
   图标本身用 currentColor，不散落硬编码色值。 */
.svc .ic svg{width:24px;height:24px;color:var(--blue)}
.svc h3{font-size:19px;font-weight:700;color:var(--ink)}
.svc p{margin-top:10px;font-size:14.5px;line-height:1.85;color:var(--mut);flex:1}
.svc p b{color:var(--blue);font-weight:700}
.svc .ft{display:flex;justify-content:space-between;align-items:center;margin-top:24px;padding-top:18px;border-top:1px solid var(--line-2)}
.svc .tag{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;color:var(--dim);text-transform:uppercase}
.svc .ft a{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--blue)}
.svc .ft a svg{width:15px;height:15px;transition:transform .3s var(--ease)}
.svc .ft a:hover svg{transform:translateX(4px)}
/* process */
.proc{position:relative;max-width:760px;margin:0 auto}
.proc::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:1.5px;background:linear-gradient(to bottom,rgba(14,99,255,.5),rgba(15,23,42,.08))}
.step{position:relative;padding:0 0 46px 44px}
.step:last-child{padding-bottom:0}
.step::before{content:"";position:absolute;left:0;top:6px;width:15px;height:15px;border-radius:50%;background:#fff;border:2px solid #C9D2E0;transition:border-color .5s,box-shadow .5s}
.step.lit::before{border-color:var(--blue);box-shadow:0 0 0 5px rgba(14,99,255,.12)}
.step .no{font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--blue)}
.step h3{font-size:19px;font-weight:700;color:var(--ink);margin:8px 0 10px}
.step p{font-size:14.5px;line-height:1.85;color:var(--mut);max-width:560px}
.step .dur{display:inline-block;margin-top:12px;font-size:12px;font-family:var(--mono);letter-spacing:.06em;color:var(--blue-deep);background:var(--blue-pale);border-radius:6px;padding:5px 11px}
/* cases */
.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.case{background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px 28px;transition:transform .45s var(--ease),box-shadow .45s,border-color .3s}
.case:hover{transform:translateY(-5px);box-shadow:var(--sh-lg);border-color:rgba(14,99,255,.35)}
.case .top{display:flex;justify-content:space-between;align-items:center;font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--dim)}
.case .top .res{color:var(--blue-deep);background:var(--blue-pale);border-radius:999px;padding:5px 12px;font-weight:600}
.case h3{margin:18px 0 22px;font-size:17.5px;line-height:1.65;font-weight:700;color:var(--ink)}
.case .kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;border-top:1px solid var(--line-2);padding-top:20px}
.case .kpis b{display:block;font-size:19px;font-weight:800;color:var(--blue);letter-spacing:-.01em}
.case .kpis span{font-size:12px;color:var(--mut);margin-top:5px;display:block}
.clients-mq{margin-top:52px;overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.mq-track{display:flex;gap:64px;width:max-content;animation:mq 30s linear infinite;padding:6px 0}
.clients-mq:hover .mq-track{animation-play-state:paused}
.mq-track span{font-family:var(--mono);font-size:13.5px;letter-spacing:.08em;color:var(--dim);white-space:nowrap;transition:color .3s}
.mq-track span:hover{color:var(--ink)}
@keyframes mq{to{transform:translateX(-50%)}}
/* news */
.news-list{border-top:1px solid var(--line)}
.nrow{display:grid;grid-template-columns:120px 110px 1fr 30px;align-items:center;gap:22px;padding:26px 8px;border-bottom:1px solid var(--line);transition:background .3s,padding-left .35s var(--ease)}
.nrow:hover{background:var(--bg-2);padding-left:18px}
.nrow time{font-size:12.5px;color:var(--dim)}
.nrow .tag{font-size:12px;color:var(--blue-deep);background:var(--blue-pale);border-radius:6px;padding:4px 10px;text-align:center;font-weight:600}
.nrow h3{font-size:16px;font-weight:600;color:var(--ink);line-height:1.6}
.nrow .arr{color:var(--dim);font-size:18px;transition:color .3s,transform .35s var(--ease)}
.nrow:hover .arr{color:var(--blue);transform:translateX(4px)}
/* faq */
.faq{max-width:820px;margin:0 auto;border-top:1px solid var(--line)}
.faq-it{border-bottom:1px solid var(--line)}
.faq-q{width:100%;background:none;border:0;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:24px 4px;font-size:16.5px;font-weight:600;color:var(--ink);text-align:left;transition:color .3s}
.faq-q:hover{color:var(--blue)}
.faq-q .pm{font-family:var(--mono);font-size:18px;color:var(--blue);flex-shrink:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .5s var(--ease)}
.faq-a p{padding:0 44px 24px 4px;font-size:14.5px;line-height:1.9;color:var(--mut)}
/* ————— blue signature zone (CTA + footer) ————— */
.blue-zone{background:var(--blue);margin-top:110px}
.cta-box{max-width:1200px;margin:0 auto;padding:96px 32px 80px;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.cta-l h2{font-size:clamp(30px,4vw,48px);font-weight:800;letter-spacing:-.02em;color:#fff;line-height:1.2}
.cta-l p{margin-top:20px;font-size:15.5px;line-height:1.9;color:rgba(255,255,255,.82);max-width:440px}
.cta-l .tel{margin-top:30px;font-family:var(--mono);font-size:11px;letter-spacing:.18em;color:rgba(255,255,255,.6)}
.cta-l .tel a{display:block;font-size:32px;font-weight:800;color:#fff;letter-spacing:.02em;margin-top:8px}
.cta-r{background:#fff;border-radius:18px;padding:38px 34px;box-shadow:0 30px 60px -20px rgba(10,30,80,.45)}
.cta-r label{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);margin:0 0 8px}
.cta-r input,.cta-r select{width:100%;border:1px solid var(--line);border-radius:10px;padding:13px 15px;font-size:14.5px;font-family:inherit;color:var(--ink);background:var(--bg-2);margin-bottom:20px;outline:none;transition:border-color .3s,box-shadow .3s;appearance:none}
.cta-r input:focus,.cta-r select:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(14,99,255,.14);background:#fff}
.cta-r .submit{width:100%;border:0;background:var(--blue);color:#fff;font-size:15.5px;font-weight:700;border-radius:10px;padding:15px;transition:background .3s,transform .35s var(--ease),box-shadow .35s}
.cta-r .submit:hover{background:var(--blue-deep);transform:translateY(-2px);box-shadow:0 12px 26px -8px rgba(14,99,255,.55)}
.cta-r .note{margin-top:14px;font-size:12px;color:var(--dim);text-align:center}
.form-ok{display:none;text-align:center;padding:50px 10px}
.form-ok b{font-size:21px;color:var(--ink)}
.form-ok p{margin-top:12px;font-size:14px;color:var(--mut);line-height:1.8}
.footer{border-top:1px solid rgba(255,255,255,.18)}
.ft-grid{max-width:1200px;margin:0 auto;padding:64px 32px 48px;display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:44px}
.ft-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:#fff}
.ft-brand svg{width:26px;height:26px}
.ft-logo{height:44px;width:auto;display:block;background:#fff;border-radius:10px;padding:6px 14px}
.ft-desc{margin-top:16px;font-size:13px;line-height:1.9;color:rgba(255,255,255,.65);max-width:280px}
.footer h6{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:rgba(255,255,255,.55);margin-bottom:18px;font-weight:600}
.footer a,.footer li{display:block;list-style:none;font-size:13.5px;color:rgba(255,255,255,.8);margin-bottom:12px;line-height:1.7;transition:color .3s}
.footer a:hover{color:#fff}
.ft-base{max-width:1200px;margin:0 auto;padding:22px 32px;border-top:1px solid rgba(255,255,255,.18);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px;color:rgba(255,255,255,.5)}
@media(max-width:1024px){
  .nav-links{display:none}
  .nav-cta .btn-g{display:none}
  .burger{display:block}
  .svc-grid{grid-template-columns:1fr 1fr}
  .cta-box{grid-template-columns:1fr;gap:44px;padding:72px 32px 64px}
  .ft-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .wrap{padding:0 20px}
  .stats{grid-template-columns:1fr 1fr}
  .stats>div:nth-child(2){border-right:0}
  .stats>div:nth-child(1),.stats>div:nth-child(2){border-bottom:1px solid var(--line-2)}
  .svc-grid,.case-grid{grid-template-columns:1fr}
  .nrow{grid-template-columns:1fr;gap:8px}
  .nrow .arr{display:none}
  .sec{padding:76px 0}
  .cta-l .tel a{font-size:26px}
  .ft-grid{grid-template-columns:1fr;gap:32px}
  .nav-in{padding:0 20px}
  .logo-img{height:36px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001s!important;transition-duration:.001s!important}
  html{scroll-behavior:auto}
}
.form-ok{display:none;text-align:center;padding:50px 10px}
.form-ok b{font-size:21px;color:var(--ink)}
.form-ok p{margin-top:12px;font-size:14px;color:var(--mut);line-height:1.8}
/* 留资表单：蜜罐与报错 */
.hp{position:absolute!important;left:-9999px!important;top:-9999px!important;width:1px;height:1px;opacity:0;pointer-events:none}
.form-err{color:#DC2626;font-size:13px;margin:10px 0 0;font-weight:500}
.note a{color:inherit;text-decoration:underline}