/* ===========================================================
   法之诚 · 12+5 企业用工防护体系
   配色全部走变量：改品牌色只需改下面 4 行
   =========================================================== */
:root{
  --navy-900:#081C30;
  --navy-800:#0A2540;
  --navy-700:#123A5E;
  --navy-600:#1B4C77;

  --gold:#C6A15B;
  --gold-soft:#E3C98F;
  --gold-tint:#FBF6EA;

  --ink:#0F1E2E;
  --muted:#5A6B7D;
  --muted-2:#8496A8;

  --bg:#FFFFFF;
  --soft:#F6F8FB;
  --line:#E4E9F0;
  --line-dark:rgba(255,255,255,.14);

  --radius:10px;
  --radius-lg:16px;
  --shadow:0 1px 2px rgba(10,37,64,.04),0 12px 32px -12px rgba(10,37,64,.12);
  --container:1280px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:600;letter-spacing:-.01em}
p{margin:0}
ul,ol,dl{margin:0;padding:0;list-style:none}
.sprite{display:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.container.narrow{max-width:860px}
.only-pc{display:none}
@media(min-width:900px){.only-pc{display:inline}}

/* ---------- 通用元件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:8px;font-size:15px;font-weight:500;
  border:1px solid transparent;cursor:pointer;transition:.2s ease;white-space:nowrap;
}
.btn-primary{background:var(--gold);color:#20180A;border-color:var(--gold)}
.btn-primary:hover{background:var(--gold-soft);border-color:var(--gold-soft);transform:translateY(-1px)}
.btn-outline{border-color:rgba(198,161,91,.55);color:var(--gold-soft);background:transparent}
.btn-outline:hover{background:rgba(198,161,91,.12);border-color:var(--gold)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--navy-700);color:var(--navy-800)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-block{width:100%}
.ico{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex:none}
.ico-sm{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
.ico-dl{width:26px;height:26px;fill:none;stroke:var(--gold);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}

.kicker{
  display:inline-block;font-size:16px;letter-spacing:.12em;color:var(--navy-600);
  font-weight:600;margin-bottom:14px;padding-left:30px;position:relative;
}
.kicker::before{content:"";position:absolute;left:0;top:50%;width:18px;height:2px;background:var(--gold)}
.kicker.light{color:var(--gold-soft)}

.section{padding:96px 0}
.section-head{max-width:760px;margin-bottom:52px}
.section-head h2{font-size:clamp(26px,3.2vw,36px)}
/* 标题换行均衡，避免末行只剩两三个字 */
.section-head h2,.about-copy h2,.method-head h3,.hero-title h1,.hero-title .h1-text{text-wrap:balance}
.section-lead{margin-top:16px;color:var(--muted);font-size:16.5px}
.sub-h3{font-size:22px;margin-bottom:24px}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid transparent;transition:.25s ease;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 4px 20px -12px rgba(10,37,64,.25)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:74px;gap:24px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{display:flex;align-items:center}
.brand-mark img{width:40px;height:40px;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.2;white-space:nowrap}
.brand-text strong{font-size:19px;letter-spacing:.08em;color:var(--navy-900);white-space:nowrap}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--muted-2);letter-spacing:.06em}
.main-nav{display:flex;align-items:center;gap:8px;font-size:15px}
.main-nav > a,.nav-link,.nav-tel-txt strong{white-space:nowrap}
.main-nav > a{
  color:var(--navy-800);font-weight:500;padding:8px 15px;border-radius:100px;
  background:rgba(10,37,64,.05);transition:.18s ease;cursor:pointer;text-decoration:none;
}
.main-nav > a:hover{background:rgba(10,37,64,.11);color:var(--navy-900)}
.main-nav > a.active{background:var(--navy-900);color:#fff}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-tel{display:flex;align-items:center;gap:9px;text-decoration:none;padding:5px 14px 5px 6px;border-radius:100px;transition:.18s ease}
.nav-tel-ico{
  width:30px;height:30px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:var(--gold-tint);color:var(--gold-deep, #A9852F);
}
.nav-tel-ico svg{width:15px;height:15px}
.nav-tel-txt{display:flex;flex-direction:column;line-height:1.15}
.nav-tel-txt em{font-style:normal;font-size:10.5px;color:var(--muted-2);letter-spacing:.08em}
.nav-tel-txt strong{font-size:15.5px;font-weight:700;color:var(--navy-900);letter-spacing:.02em;font-variant-numeric:tabular-nums}
.nav-tel:hover{background:var(--gold-tint)}
.nav-tel:hover .nav-tel-ico{background:var(--gold);color:#fff}
.nav-tel:hover .nav-tel-txt strong{color:var(--gold-deep, #A9852F)}
.nav-dl{display:inline-flex;align-items:center;gap:7px;white-space:nowrap}
.nav-dl .ico-sm{width:15px;height:15px;stroke-width:2}
/* 窄屏用短文案，避免把品牌挤成竖排 */
.nav-dl-txt-xs{display:none}
@media(max-width:365px){
  .nav-dl-txt{display:none}
  .nav-dl-txt-xs{display:inline}
}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:8px;background:#fff;cursor:pointer;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:4px}
.nav-toggle span{display:block;width:16px;height:1.5px;background:var(--navy-800);transition:.2s}

/* ---------- 首屏 ---------- */
.hero{position:relative;background:var(--navy-900);color:#fff;overflow:hidden}
.hero-grid{
  position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(120% 90% at 70% 10%,#000 25%,transparent 78%);
  -webkit-mask-image:radial-gradient(120% 90% at 70% 10%,#000 25%,transparent 78%);
}
.hero-inner{position:relative;padding:58px 24px 0}
.hero-title{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 20px}
.h1-num{
  font-size:clamp(64px,11vw,132px);line-height:.95;font-weight:600;letter-spacing:-.03em;color:#fff;
}
.h1-num .plus{color:var(--gold);font-weight:400;margin:0 .02em}
.h1-text{
  font-size:clamp(24px,3.4vw,46px);font-weight:500;letter-spacing:.04em;color:#fff;white-space:nowrap;
}
.hero-desc{margin-top:22px;max-width:680px;color:rgba(255,255,255,.78);font-size:clamp(15px,1.6vw,17.5px)}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:48px;
  background:var(--line-dark);border-top:1px solid var(--line-dark);
}
.hero-stats li{background:var(--navy-900);padding:22px 8px 28px}
.hero-stats strong{display:block;font-size:clamp(20px,2.4vw,27px);color:#fff;letter-spacing:-.01em}
.hero-stats span{display:block;margin-top:5px;font-size:12.5px;color:rgba(255,255,255,.55);letter-spacing:.04em}

/* ---------- 12 板块 ---------- */
.section-system{padding-top:88px}
.groups{display:flex;flex-direction:column;gap:28px}
.group{background:var(--soft);border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px}
.group-gold{background:var(--gold-tint);border-color:#EFE2C6}
.group-head{margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.group-gold .group-head{border-bottom-color:#EFE2C6}
.group-tag{
  font-size:13.5px;letter-spacing:.14em;color:var(--navy-700);font-weight:600;margin-bottom:9px;
  display:flex;align-items:center;gap:10px;
}
.group-tag::before{content:"";width:22px;height:2px;background:var(--gold);border-radius:2px}
.group-gold .group-tag{color:#8A6A2F}
.group-head h3{font-size:clamp(22px,2.4vw,28px);color:var(--navy-900)}
.modules{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.modules-8{grid-template-columns:repeat(4,1fr)}
.modules li{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;transition:.22s ease}
.group-single .modules{grid-template-columns:1fr}
.group-single .modules li{display:grid;grid-template-columns:auto 1fr;column-gap:16px;padding:26px 28px}
.group-single .modules .ico{grid-row:1 / span 2;margin:0;align-self:start}
.group-single .modules h4{grid-column:2;margin-bottom:4px}
.group-single .modules p{grid-column:2}
.modules li:hover{border-color:#C9D7E6;box-shadow:var(--shadow);transform:translateY(-2px)}
.modules .ico{color:var(--navy-700);margin-bottom:12px}
.modules h4{font-size:16.5px;margin-bottom:6px;color:var(--navy-900)}
.modules p{font-size:14px;color:var(--muted);line-height:1.65}

/* ---------- 5 步交付法 ---------- */
.method{margin-top:48px;background:var(--navy-900);border-radius:var(--radius-lg);padding:48px 40px 44px;color:#fff}
.method-head{max-width:660px;margin-bottom:40px}
.method-head h3{font-size:clamp(24px,3vw,32px);letter-spacing:.03em;margin-bottom:12px}
.method-head p{color:rgba(255,255,255,.66);font-size:15px}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--navy-900);border-radius:8px;overflow:hidden}
.steps li{background:var(--navy-900);padding:26px 18px;position:relative;box-shadow:inset 0 0 0 1px rgba(255,255,255,.10)}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;
  border:1px solid rgba(198,161,91,.5);border-radius:50%;color:var(--gold-soft);font-size:15px;margin-bottom:14px;
}
.steps h4{font-size:16px;margin-bottom:8px;color:#fff}
.steps h4 em{display:block;font-style:normal;font-size:11.5px;color:rgba(255,255,255,.46);margin-top:5px;letter-spacing:.04em}
.steps p{font-size:13px;color:rgba(255,255,255,.6);line-height:1.7}

/* ---------- 服务项目 ---------- */
.services{margin-top:56px}
.service-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.service-card{position:relative;border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px 26px;background:#fff;transition:.22s}
.service-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.service-card.featured{border-color:rgba(198,161,91,.6);background:linear-gradient(180deg,var(--gold-tint),#fff 55%)}
.service-no{font-size:12px;letter-spacing:.16em;color:var(--muted-2)}
.service-card h4{font-size:19px;margin:10px 0 12px;color:var(--navy-900)}
.service-for{font-size:13.5px;color:var(--navy-600);background:var(--soft);border-radius:6px;padding:8px 12px;margin-bottom:18px}
.ticks{display:flex;flex-direction:column;gap:10px}
.ticks li{font-size:14px;color:var(--muted);padding-left:18px;position:relative}
.ticks li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--gold)}
.services-note{margin-top:22px;font-size:13.5px;color:var(--muted-2)}

/* ---------- 行业方案 ---------- */
.section-industries{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.industry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.industry-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;display:flex;flex-direction:column;transition:.22s}
.industry-card:hover{background:var(--gold-tint);border-color:#EFE2C6}
.industry-card:hover{border-color:var(--gold);transform:translateY(-2px);box-shadow:var(--shadow)}
.industry-card h3{font-size:18px;margin-bottom:8px;color:var(--navy-900)}
.industry-card p{font-size:14px;color:var(--muted);flex:1}
.link-arrow{margin-top:18px;font-size:13px;color:var(--navy-600);display:inline-flex;align-items:center;gap:6px}
.industry-card:hover .link-arrow{color:var(--gold)}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case-card{border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px 26px;background:#fff}
.case-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.case-meta span{font-size:11.5px;color:var(--navy-700);background:var(--soft);border:1px solid var(--line);border-radius:100px;padding:3px 10px}
.case-card h3{font-size:18px;line-height:1.5;margin-bottom:18px;color:var(--navy-900)}
.case-card dt{font-size:11.5px;letter-spacing:.14em;color:var(--gold);margin-bottom:2px}
.case-card dd{margin:0 0 14px;font-size:13.8px;color:var(--muted);line-height:1.7}
.case-card dd:last-child{margin-bottom:0}
.case-disclaimer{margin-top:24px;font-size:12.5px;color:var(--muted-2)}

/* ---------- 资源 ---------- */
.section-resources{padding-bottom:104px}
.resource-layout{display:grid;grid-template-columns:1.55fr 1fr;gap:44px;align-items:start}
.articles{display:flex;flex-direction:column}
.article-row{padding:24px 0;border-top:1px solid var(--line);display:block;transition:.2s}
.article-row:last-child{border-bottom:1px solid var(--line)}
.article-row:hover h3{color:var(--navy-600)}
.article-tag{font-size:11.5px;letter-spacing:.12em;color:#8A6A2F;font-weight:600}
.article-row h3{font-size:17.5px;margin:8px 0 8px;line-height:1.55;transition:.2s}
.article-row p{font-size:14px;color:var(--muted)}
.downloads{display:flex;flex-direction:column;gap:16px}
.download-card{background:var(--navy-900);color:#fff;border-radius:var(--radius-lg);padding:28px 24px}
.download-card:nth-child(2){background:var(--gold-tint);color:var(--ink);border:1px solid #EFE2C6}
.download-card h3{font-size:16.5px;margin:14px 0 8px}
.download-card p{font-size:13.5px;color:rgba(255,255,255,.62);margin-bottom:20px}
.download-card:nth-child(2) p{color:var(--muted)}
.download-card:nth-child(2) .ico-dl{stroke:var(--navy-600)}
.download-card:nth-child(2) .btn-outline{color:var(--navy-800);border-color:#D9C596}
.download-card:nth-child(2) .btn-outline:hover{background:#F5EDD8;border-color:var(--gold)}

/* ---------- 品牌介绍 ---------- */
.section-about{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.about-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:center}
.about-copy h2{font-size:clamp(26px,3.2vw,34px);margin-bottom:22px}
.about-copy>p{color:var(--muted);margin-bottom:16px;font-size:15.5px}
.about-copy>p strong{color:var(--navy-900);font-weight:600}
.relations{margin-top:34px;padding-top:28px;border-top:1px solid var(--line)}
.relations h3{font-size:16px;margin-bottom:10px;color:var(--navy-900)}
.relations p{font-size:14.5px;color:var(--muted)}
.about-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:20px 28px;margin-top:26px}
.about-stats strong{display:block;font-size:24px;color:var(--navy-900);letter-spacing:-.01em}
.about-stats span{font-size:12.5px;color:var(--muted-2)}
.about-visual{position:relative;aspect-ratio:1;display:flex;align-items:center;justify-content:center;margin:0}
.ring{position:absolute;border:1px solid rgba(198,161,91,.3);border-radius:50%}
.ring-1{inset:6%}
.ring-2{inset:18%;border-color:rgba(18,58,94,.18)}
.ring-3{inset:30%;border-color:rgba(198,161,91,.5)}
.ring-core{position:relative;text-align:center;background:#fff;border:1px solid var(--line);border-radius:50%;width:46%;aspect-ratio:1;display:flex;flex-direction:column;align-items:center;justify-content:center;box-shadow:var(--shadow)}
.ring-core strong{font-size:clamp(26px,3.4vw,38px);color:var(--navy-900);letter-spacing:-.02em}
.ring-core span{font-size:11.5px;color:var(--muted);line-height:1.5;margin-top:4px}
.ring-label{position:absolute;font-size:12px;letter-spacing:.16em;color:var(--navy-600);background:var(--soft);padding:4px 10px}
.ring-label.l1{top:9%;right:6%}
.ring-label.l2{bottom:12%;left:4%}

/* ---------- FAQ ---------- */
.faq details{border-top:1px solid var(--line);padding:6px 0}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{
  cursor:pointer;list-style:none;padding:20px 40px 20px 0;position:relative;
  font-size:16.5px;font-weight:500;color:var(--navy-900);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";position:absolute;right:6px;top:50%;width:9px;height:9px;
  border-right:1.5px solid var(--muted);border-bottom:1.5px solid var(--muted);
  transform:translateY(-70%) rotate(45deg);transition:.2s;
}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq details p{padding:0 40px 24px 0;color:var(--muted);font-size:14.8px}

/* ---------- 联系 / 表单 ---------- */
.section-contact{background:var(--navy-900);color:#fff;padding:90px 0}
.contact-layout{display:grid;grid-template-columns:1fr 460px;gap:64px;align-items:start}
.contact-copy h2{font-size:clamp(28px,3.4vw,38px);margin-bottom:18px}
.contact-copy>p{color:rgba(255,255,255,.7);font-size:15.5px;max-width:480px}
.contact-points{margin-top:28px;display:flex;flex-direction:column;gap:12px}
.contact-points li{display:flex;align-items:center;gap:10px;font-size:14.5px;color:rgba(255,255,255,.8)}
.contact-points .ico-sm{color:var(--gold)}
.contact-direct{margin-top:36px;display:flex;align-items:center;gap:32px;flex-wrap:wrap}
.contact-item{display:flex;align-items:center;gap:12px;border:1px solid var(--line-dark);border-radius:10px;padding:14px 20px;transition:.2s}
.contact-item:hover{border-color:var(--gold)}
.contact-item .ico-sm{color:var(--gold)}
.contact-item em{display:block;font-style:normal;font-size:11.5px;color:rgba(255,255,255,.5);letter-spacing:.06em}
.contact-item strong{font-size:19px;letter-spacing:.02em;color:#fff}
.qr-box{display:flex;align-items:center;gap:12px;font-size:12px;color:rgba(255,255,255,.55)}
.qr-placeholder{
  width:78px;height:78px;border-radius:8px;border:1px dashed rgba(255,255,255,.28);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:10.5px;color:rgba(255,255,255,.45);background:rgba(255,255,255,.04);padding:6px;line-height:1.4;
}
.lead-form{background:#fff;color:var(--ink);border-radius:var(--radius-lg);padding:32px 30px;box-shadow:0 24px 60px -24px rgba(0,0,0,.5)}
.lead-form h3{font-size:20px;margin-bottom:22px;color:var(--navy-900)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:7px}
.field .opt{color:var(--muted-2)}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:8px;
  font-family:inherit;font-size:15px;color:var(--ink);background:#fff;transition:.18s;outline:none;
}
.field textarea{resize:vertical;min-height:84px}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--navy-600);box-shadow:0 0 0 3px rgba(27,76,119,.09)}
.field input.invalid,.field select.invalid{border-color:#C0392B;background:#FDF3F2}
.lead-form .btn{margin-top:8px;padding:15px}
.form-tip{margin-top:12px;font-size:11.5px;color:var(--muted-2);line-height:1.6}
.form-success{
  margin-top:14px;background:#EDF7F0;border:1px solid #BFE3CB;color:#1E6B39;
  border-radius:8px;padding:12px 14px;font-size:13.5px;
}

/* ---------- 页脚 ---------- */
.site-footer{background:#061726;color:rgba(255,255,255,.62);padding:64px 0 28px}
.footer-inner{display:grid;grid-template-columns:1.2fr 2fr .9fr;gap:48px;padding-bottom:44px}
.footer-brand strong{font-size:20px;color:#fff;letter-spacing:.1em}
.footer-logo{width:46px;height:46px;display:block;margin-bottom:14px}
.footer-brand p{margin-top:12px;font-size:13.5px;line-height:1.8}
.footer-nav{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.footer-nav h4{font-size:13px;color:#fff;margin-bottom:14px;letter-spacing:.08em;font-weight:500}
.footer-nav a{display:block;font-size:13.5px;margin-bottom:9px;transition:.2s}
.footer-nav a:hover{color:var(--gold-soft)}
.footer-contact a{font-size:18px;color:#fff}
.footer-contact p{font-size:12.5px;margin-top:8px}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.1);padding-top:24px;font-size:12.5px;
}
.footer-bottom a:hover{color:var(--gold-soft)}
.offi-tag{display:inline-block;padding:1px 7px;margin-left:3px;border:1px solid rgba(212,175,55,.55);border-radius:3px;color:var(--gold-soft);font-size:11.5px;letter-spacing:.05em;vertical-align:1px}

/* ---------- 滚动动效 ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ---------- 响应式 ---------- */
@media(max-width:1080px){
  .modules-8{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .steps li:last-child{grid-column:span 2}
  .contact-layout{grid-template-columns:1fr;gap:44px}
  .lead-form{max-width:520px}
}
@media(max-width:900px){
  .main-nav{
    position:absolute;top:74px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;padding:8px 24px 20px;display:none;
  }
  .main-nav.open{display:flex;max-height:calc(100vh - 74px);overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}
  .main-nav > a{
    padding:13px 0;border-bottom:1px solid var(--line);font-size:16px;border-radius:0;
    background:transparent;text-align:left;
  }
  .main-nav > a:last-child{border-bottom:none}
  .main-nav > a.active{background:var(--gold-tint);color:var(--navy-900)}
  .nav-toggle{display:flex}
  .section{padding:72px 0}
  .modules,.modules-8{grid-template-columns:repeat(2,1fr)}
  .service-cards,.case-grid,.industry-grid{grid-template-columns:1fr 1fr}
  .resource-layout{grid-template-columns:1fr;gap:32px}
  .about-layout{grid-template-columns:1fr;gap:48px}
  .about-visual{width:100%;max-width:340px;margin:0 auto}
  .footer-inner{grid-template-columns:1fr;gap:36px}
  .hero-inner{padding-top:56px}
  .hero-stats{grid-template-columns:1fr 1fr;margin-top:44px}
  .hero-stats li{padding:22px 8px 24px}
  .hero-stats li:nth-child(1),.hero-stats li:nth-child(2){border-bottom:1px solid var(--line-dark)}
}
@media(max-width:640px){
  body{font-size:15.5px}
  .container{padding:0 18px}
  .section{padding:60px 0}
  .section-head{margin-bottom:36px}
  .hero-title{flex-direction:column;align-items:flex-start;gap:16px}
  .modules,.modules-8,.service-cards,.case-grid,.industry-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .steps li{padding:22px 16px}
  .steps li:last-child{grid-column:1 / -1}
  .method{padding:32px 20px}
  .group{padding:22px 18px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .contact-direct{gap:20px}
  .lead-form{padding:24px 20px}
  .footer-bottom{flex-direction:column}
  .footer-nav{grid-template-columns:1fr 1fr;gap:22px 16px}
}
/* 超窄屏（≤380px）：五步卡片改单列，避免一列不足 8 个字 */
@media(max-width:380px){
  .steps{grid-template-columns:1fr}
  .steps li:last-child{grid-column:auto}
  .about-stats{gap:18px 20px}
  .method-head h3{font-size:20px;letter-spacing:0}
}

/* ===========================================================
   联系方式：二维码 + 可复制微信号
   =========================================================== */
.qr-img{width:78px;height:78px;border-radius:8px;background:#fff;object-fit:cover;flex:0 0 auto}
.qr-txt{line-height:1.7}
.wx-id{cursor:pointer;border-bottom:1px dashed currentColor;transition:.15s}
.wx-id:hover{color:var(--gold-soft)}
.footer-contact .wx-id:hover{color:var(--gold)}

/* ===========================================================
   悬浮联系 dock（任何位置可见 · 高对比配色）
   =========================================================== */
.dock{position:fixed;right:20px;bottom:24px;z-index:90;display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.dock-btn{
  position:relative;
  width:58px;height:58px;border-radius:50%;border:2.5px solid #fff;cursor:pointer;text-decoration:none;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;
  font-size:11px;font-weight:600;font-family:inherit;letter-spacing:.02em;color:#fff;
  box-shadow:0 10px 26px rgba(4,14,26,.5);transition:transform .16s,box-shadow .16s;
}
.dock-btn svg{width:22px;height:22px}
.dock-btn:hover{transform:translateY(-3px) scale(1.04)}
.dock-btn.tel{
  background:linear-gradient(160deg,#FF6A2C 0%,#F43F00 100%);
  box-shadow:0 10px 26px rgba(244,63,0,.45),0 0 0 4px rgba(244,63,0,.16);
}
.dock-btn.tel:hover{box-shadow:0 14px 30px rgba(244,63,0,.55),0 0 0 4px rgba(244,63,0,.22)}
.dock-btn.wx{
  background:linear-gradient(160deg,#12D06F 0%,#07B453 100%);
  box-shadow:0 10px 26px rgba(7,180,83,.45),0 0 0 4px rgba(7,180,83,.16);
}
.dock-btn.wx:hover{box-shadow:0 14px 30px rgba(7,180,83,.55),0 0 0 4px rgba(7,180,83,.22)}

/* 电话悬停号码气泡（仅桌面悬停设备显示；手机端点按直接拨打） */
.tel-tip{
  display:none;position:absolute;right:70px;top:50%;transform:translateY(-50%) translateX(6px);
  background:#fff;border-radius:10px;padding:9px 14px;white-space:nowrap;text-align:left;
  box-shadow:0 12px 32px rgba(4,14,26,.3);border:1px solid var(--line);
}
.tel-tip b{display:block;font-size:17px;color:#F43F00;letter-spacing:.03em}
.tel-tip i{display:block;font-style:normal;font-size:11px;color:var(--muted);margin-top:2px}
@media (hover:hover){
  .dock-btn.tel:hover .tel-tip,.dock-btn.tel:focus-visible .tel-tip{
    display:block;transform:translateY(-50%) translateX(0);transition:transform .15s;
  }
}

/* 微信面板：桌面悬停即展开（JS 配合），移动端点按开合 */
.dock-wx-wrap{display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.dock-panel{
  display:none;width:232px;background:#fff;border-radius:14px;padding:16px 16px 14px;
  box-shadow:0 18px 48px rgba(4,14,26,.35);text-align:center;border:1px solid var(--line);
}
.dock-panel.open{display:block}
@media (hover:hover){
  .dock-wx-wrap:hover .dock-panel{display:block}
}
.dock-panel img{width:156px;height:156px;display:block;margin:0 auto 10px;border-radius:8px}
.dock-hint{margin:0 0 6px;font-size:12.5px;color:var(--muted)}
.dock-id{margin:0 0 10px;font-size:12px;color:var(--muted)}
.dock-id b{color:var(--navy-800);font-size:13px}
.dock-copy{
  width:100%;padding:9px 0;border:0;border-radius:8px;background:#07B453;color:#fff;
  font-size:13px;font-family:inherit;cursor:pointer;transition:.16s;
}
.dock-copy:hover{background:#069A47}
.dock-tel2{display:block;margin-top:9px;font-size:12px;color:#F43F00;text-decoration:none}
.copy-toast{
  position:fixed;left:50%;bottom:100px;transform:translate(-50%,10px);z-index:95;
  background:rgba(8,28,48,.92);color:#fff;font-size:13px;padding:9px 18px;border-radius:8px;
  opacity:0;pointer-events:none;transition:.22s;
}
.copy-toast.show{opacity:1;transform:translate(-50%,0)}

@media (max-width:640px){
  .dock{right:14px;bottom:calc(16px + env(safe-area-inset-bottom))}
  .dock-btn{width:54px;height:54px}
  .dock-panel{width:210px}
  .dock-panel img{width:140px;height:140px}
  .qr-img{width:66px;height:66px}
  .copy-toast{bottom:150px}
}

/* 页脚电话标注 */
.tel-note{font-size:.82em;color:var(--muted);font-weight:400}

/* 导航电话：小屏收紧，窄屏隐藏（手机端有右下角悬浮拨号钮） */
@media(max-width:1000px){
  .nav-tel{padding:0 4px;gap:0}
  .nav-tel-ico{display:none}
  .nav-tel-txt em{display:none}
  .nav-tel-txt strong{font-size:14.5px}
}
/* 手机端头部：电话（圆形图标钮）+ 下载体系详解，两者始终可见 */
@media(max-width:900px){
  .nav-actions{gap:8px}
  .nav-tel{
    display:flex;width:38px;height:38px;padding:0;border-radius:50%;flex:0 0 auto;
    justify-content:center;background:rgba(244,63,0,.08);border:1px solid rgba(244,63,0,.3);
  }
  .nav-tel-ico{display:flex;align-items:center;justify-content:center;width:auto;height:auto;background:transparent;color:#F43F00}
  .nav-tel-ico svg{width:19px;height:19px}
  .nav-tel-txt{display:none}
  .nav-tel:hover{background:rgba(244,63,0,.16)}
  .nav-dl{height:38px;padding:0 12px;font-size:13px;gap:5px}
  .nav-dl .ico-sm{width:14px;height:14px}
  .nav-toggle{width:38px;height:38px;flex:0 0 auto}
  .brand-text em{display:none}
}
/* 平板宽度：空间足够，电话恢复完整号码 */
@media(min-width:561px) and (max-width:900px){
  .nav-tel{width:auto;padding:0 15px 0 7px;border-radius:100px;gap:8px}
  .nav-tel-ico{width:27px;height:27px}
  .nav-tel-txt{display:flex}
  .nav-tel-txt em{display:none}
  .nav-tel-txt strong{font-size:14.5px}
}
@media(max-width:400px){
  .nav-wrap{gap:12px}  .brand-mark img{width:36px;height:36px}
  .brand{gap:8px}
  .brand-text strong{font-size:17.5px}
  .nav-dl{padding:0 10px;font-size:12.5px}
}
@media(max-width:352px){
  .nav-dl .ico-sm{display:none}
  .nav-dl{padding:0 9px}
  .nav-actions{gap:6px}
  .nav-toggle{width:34px;height:34px}
}

/* 中等宽度：收紧菜单、隐藏顶部电话（右下角悬浮拨号仍在） */
@media(min-width:901px) and (max-width:1120px){
  .nav-tel{display:none}
  .main-nav{font-size:14px;gap:5px}
  .main-nav > a{padding:7px 11px}
  .nav-actions{gap:8px}
  .brand-text em{display:none}
}

/* ===========================================================
   主导航下拉（mega menu）
   =========================================================== */
.main-nav .nav-item{position:static}
.nav-m-link{display:none}
.nav-link{
  display:inline-flex;align-items:center;gap:5px;border:0;cursor:pointer;font:inherit;
  color:var(--navy-800);font-weight:500;padding:8px 15px;border-radius:100px;
  background:rgba(10,37,64,.05);transition:.18s ease;
}
.nav-link:hover{background:rgba(10,37,64,.11);color:var(--navy-900)}
.nav-item.active .nav-link{background:var(--navy-900);color:#fff}
.chev{width:9px;height:6px;opacity:.65;transition:transform .2s}
.nav-item:hover .chev,.nav-item.open .chev{transform:rotate(180deg)}

.mega{
  display:none;position:absolute;top:100%;left:0;right:0;
  background:#fff;border-top:2px solid var(--gold);border-bottom:1px solid var(--line);
  text-align:left;box-shadow:0 26px 44px -26px rgba(8,28,48,.42);padding:26px 0 0;z-index:60;
}
.nav-item:hover .mega,.nav-item.open .mega,.nav-item:focus-within .mega{display:block}
.mega-inner{display:grid;grid-template-columns:minmax(0,1fr) 218px;gap:28px;padding-bottom:20px;max-width:1380px}
.mega-cols{display:grid;grid-template-columns:248px minmax(0,1fr) 196px;gap:24px}
.mega-group{
  display:flex;align-items:baseline;gap:8px;margin:0 0 12px;padding-bottom:8px;
  font-size:13.5px;font-weight:700;color:var(--navy-900);letter-spacing:.02em;
  border-bottom:1px solid var(--line);
}
.mega-group em{font-style:normal;font-size:11px;font-weight:400;color:var(--muted-2);letter-spacing:0}
.mega-group-gap{margin-top:22px}
.mega-two{display:grid;grid-template-columns:1fr 1fr;gap:2px 14px}
.mega-item{display:block;padding:8px 10px;border-radius:8px;text-decoration:none;transition:.14s}
.mega-item b{display:block;font-size:13.5px;font-weight:600;color:var(--ink);line-height:1.5}
.mega-item span{display:block;font-size:11.5px;color:var(--muted-2);line-height:1.5;margin-top:1px}
.mega-item:hover{background:var(--gold-tint)}
.mega-item:hover b{color:var(--navy-900)}
.mega-rail{background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:16px 16px 14px}
.mega-rail-t{margin:0 0 6px;font-size:13px;font-weight:700;color:var(--navy-900)}
.mega-rail-p{margin:0 0 12px;font-size:12px;line-height:1.65;color:var(--muted)}
.mega-cta{display:flex;justify-content:center;width:100%}
.mega-rail-link{display:block;margin-top:9px;font-size:12px;color:var(--muted);text-align:center;text-decoration:none}
.mega-rail-link:hover{color:var(--gold)}
.mega-foot{border-top:1px solid var(--line);padding:11px 0 12px;text-align:right;font-size:12.5px}
.mega-foot a{color:var(--gold);text-decoration:none;font-weight:600}
.mega-foot a:hover{color:var(--navy-800)}

/* 移动端：无下拉，恢复纯链接菜单 */
@media(max-width:900px){
  .main-nav .nav-item{width:100%}
  .nav-link,.mega,.chev{display:none!important}
  .nav-m-link{
    display:block;padding:13px 0;border-bottom:1px solid var(--line);font-size:16px;
    color:var(--navy-800);font-weight:500;text-decoration:none;border-radius:0;
  }
  .nav-m-link:hover{background:none;color:var(--navy-900)}
  .nav-item.active .nav-m-link{background:transparent;color:var(--navy-800);font-weight:700}
}

/* 行业方案下拉：三列铺开 */
.mega-cols.is-industry{grid-template-columns:1fr}
.mega-cols.is-industry .mega-two{grid-template-columns:repeat(3,1fr);gap:4px 26px}

/* ===========================================================
   知识库 / 文章页（由 pipeline/publish.py 使用）
   =========================================================== */
.art-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.art-nav{display:flex;align-items:center;justify-content:space-between;height:66px;gap:16px}
.art-brand{display:flex;align-items:center;gap:10px}
.art-brand img{border-radius:8px}
.art-brand strong{display:block;font-size:17px;color:var(--navy-800);letter-spacing:.04em;line-height:1.2}
.art-brand em{display:block;font-size:11.5px;color:var(--muted-2);font-style:normal;letter-spacing:.06em}
.art-links{display:flex;align-items:center;gap:20px;font-size:14.5px;color:var(--muted)}
.art-links a{transition:.2s}
.art-links a:hover{color:var(--navy-800)}
.art-cta-btn{padding:9px 18px;font-size:13.5px;border-radius:7px}
.art-wrap{max-width:820px;margin:0 auto;padding:0 24px}
.art-main{padding:0 0 40px}
.art-crumb{font-size:13px;color:var(--muted-2);padding:20px 0 0}
.art-crumb a{color:var(--muted)}
.art-crumb a:hover{color:var(--gold)}
.art-title{font-size:31px;line-height:1.38;color:var(--navy-900);margin:16px 0 14px;letter-spacing:-.01em;font-weight:600}
.art-meta{display:flex;flex-wrap:wrap;gap:16px;font-size:13px;color:var(--muted-2);border-bottom:1px solid var(--line);padding-bottom:16px}
.art-meta b{color:var(--gold);font-weight:500}
.art-answer{margin:24px 0 6px;padding:18px 22px;background:var(--gold-tint);border-left:3px solid var(--gold);border-radius:0 var(--radius) var(--radius) 0;font-size:15.5px;line-height:1.85;color:#4A3A16}
.art-answer p{margin:0}
.art-body{font-size:16.5px;line-height:1.95;color:#1B2A3A;padding-top:6px}
.art-body h2{font-size:21px;color:var(--navy-800);margin:38px 0 14px;padding-left:12px;border-left:3px solid var(--gold)}
.art-body h3{font-size:17.5px;color:var(--navy-700);margin:26px 0 10px}
.art-body p{margin:14px 0}
.art-body ul,.art-body ol{margin:14px 0}
.art-body ul li{position:relative;padding-left:20px;margin:8px 0}
.art-body ul li::before{content:"";position:absolute;left:4px;top:12px;width:5px;height:5px;border-radius:50%;background:var(--gold)}
.art-body ol{counter-reset:n}
.art-body ol li{position:relative;padding-left:28px;margin:9px 0;counter-increment:n}
.art-body ol li::before{content:counter(n);position:absolute;left:0;top:4px;width:19px;height:19px;border-radius:50%;background:var(--navy-800);color:#fff;font-size:11.5px;display:flex;align-items:center;justify-content:center}
.art-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14.5px}
.art-body th{background:var(--navy-800);color:#fff;font-weight:500;text-align:left;padding:11px 13px}
.art-body th:first-child,.art-body td:first-child{min-width:5.2em}
.art-body td{border-bottom:1px solid var(--line);padding:11px 13px;vertical-align:top}
.art-body tbody tr:nth-child(even) td{background:var(--soft)}
.art-body strong{color:var(--navy-800);font-weight:600}
.art-body blockquote{margin:20px 0;padding:16px 20px;background:var(--soft);border-left:3px solid var(--line);color:var(--muted);font-size:15px}
.art-body a{color:var(--navy-600);border-bottom:1px solid rgba(27,76,119,.3)}
.art-body code{background:var(--soft);padding:1px 5px;border-radius:4px;font-size:.92em}
.art-body hr{border:0;border-top:1px solid var(--line);margin:26px 0}
.art-tags{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0 0}
.art-tags span{font-size:12.5px;color:var(--muted);background:var(--soft);border:1px solid var(--line);padding:4px 11px;border-radius:20px}
.art-faq{margin:38px 0 0;padding-top:6px;border-top:1px solid var(--line)}
.art-faq h2{font-size:21px;color:var(--navy-800);margin:24px 0 10px;padding-left:12px;border-left:3px solid var(--gold)}
.art-faq dt{font-weight:600;color:var(--navy-800);margin:18px 0 6px;font-size:16px}
.art-faq dd{margin:0;color:#33475B;font-size:15.5px;line-height:1.9}
.art-cta{margin:42px 0 0;padding:26px 28px;border-radius:var(--radius-lg);background:linear-gradient(150deg,var(--navy-800),var(--navy-600));color:#fff}
.art-cta h3{font-size:19px;margin:0 0 10px;color:#fff}
.art-cta p{color:rgba(255,255,255,.82);font-size:14.5px;margin:0 0 18px;line-height:1.8}
.art-cta .btns{display:flex;flex-wrap:wrap;gap:12px}
.art-cta .btn-outline{color:#fff;border-color:rgba(255,255,255,.45)}
.art-cta .btn-outline:hover{background:rgba(255,255,255,.12)}
.art-related{margin:38px 0 0;padding-top:24px;border-top:1px solid var(--line)}
.art-related h3{font-size:15px;color:var(--muted);margin:0 0 10px;font-weight:500}
.art-related a{display:block;padding:12px 0;border-bottom:1px solid var(--line);color:var(--navy-700);font-size:15px}
.art-related a:hover{color:var(--gold)}
.art-sign{margin:30px 0 0;font-size:12.5px;color:var(--muted-2);line-height:1.8}

/* 栏目页 / 知识库首页 */
.col-hero{padding:6px 0 30px;background:var(--soft);border-bottom:1px solid var(--line)}
.col-hero h1{font-size:29px;color:var(--navy-900);margin:14px 0 0}
.col-hero p{color:var(--muted);margin-top:12px;font-size:15px;line-height:1.85;max-width:760px}
.art-list{margin:26px 0 50px}
.art-item{display:block;padding:22px 0;border-bottom:1px solid var(--line)}
.art-item h2{font-size:18.5px;color:var(--navy-800);margin:0 0 8px;line-height:1.5}
.art-item p{color:var(--muted);font-size:14.5px;margin:0;line-height:1.75}
.art-item time{display:block;font-size:12.5px;color:var(--muted-2);margin-bottom:6px}
.art-item:hover h2{color:var(--gold)}
.col-grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));margin:26px 0 40px}
.col-card{display:block;padding:22px;border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff;transition:.2s}
.col-card:hover{border-color:var(--gold);box-shadow:var(--shadow);transform:translateY(-2px)}
.col-card h3{font-size:17px;color:var(--navy-800);margin:0 0 8px}
.col-card span{font-size:12.5px;color:var(--gold)}
.col-card p{font-size:13.5px;color:var(--muted);margin:8px 0 0;line-height:1.7}
.art-sec-t{font-size:17px;color:var(--navy-800);margin:44px 0 0;padding-left:12px;border-left:3px solid var(--gold)}
.col-more{margin:10px 0 60px}
.col-more>h3{font-size:17px;color:var(--navy-800);padding-left:12px;border-left:3px solid var(--gold);margin:0 0 18px}
.col-empty{color:var(--muted);font-size:15px;padding:30px 0}
@media(min-width:900px){.only-pc{display:inline}}
@media(max-width:720px){
  .art-title{font-size:24px}
  .art-body{font-size:16px}
  .art-links a:not(.art-cta-btn){display:none}
  .art-cta{padding:22px}
  .art-body table{font-size:13.5px}
  .art-body th,.art-body td{padding:9px 10px}
}
.wrap-wide{max-width:1080px}
.col-card.is-empty{background:var(--soft);border-style:dashed;cursor:default}
.col-card.is-empty h3{color:var(--muted)}
.col-card.is-empty span{color:var(--muted-2)}
.col-card.is-empty:hover{transform:none;border-color:var(--line);box-shadow:none}