:root{
  --brand:#1565ff;
  --brand-dark:#0a3fb0;
  --brand-light:#e9f1ff;
  --accent:#00b884;
  --accent-light:#e3f8f1;
  --ink:#1f2733;
  --ink-soft:#5b6675;
  --line:#e7ebf1;
  --bg:#f5f8fc;
  --white:#fff;
  --ok:#1faa59;
  --warn:#e8a33d;
  --radius:14px;
  --shadow:0 8px 30px rgba(20,40,90,.08);
  --maxw:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.btn{display:inline-block;padding:12px 26px;border-radius:999px;font-weight:600;cursor:pointer;border:none;transition:.2s}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.btn-ghost:hover{background:var(--brand-light)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{filter:brightness(.94);transform:translateY(-1px)}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--brand)}
.logo img{height:44px;width:auto;display:block;border-radius:6px}
.logo .mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;display:grid;place-items:center;font-size:16px}
.nav-links{display:flex;gap:24px;align-items:center}
.nav-links a{color:var(--ink-soft);font-weight:500;font-size:15px}
.nav-links a:hover{color:var(--brand)}
.nav-cta{display:flex;gap:12px;align-items:center}
.menu-toggle{display:none;background:none;border:none;font-size:26px;cursor:pointer;color:var(--ink)}

/* Hero */
.hero{background:linear-gradient(135deg,#0a3fb0 0%,#1565ff 55%,#2f9bff 100%);color:#fff;padding:74px 0 86px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-80px;top:-60px;width:340px;height:340px;border-radius:50%;background:rgba(255,255,255,.08)}
.hero::before{content:"";position:absolute;left:-120px;bottom:-120px;width:300px;height:300px;border-radius:50%;background:rgba(0,184,132,.18)}
.hero h1{font-size:42px;line-height:1.25;margin:0 0 16px;font-weight:800}
.hero p{font-size:18px;opacity:.92;max-width:660px;margin:0 0 28px}
.hero .stats{display:flex;gap:36px;margin-top:34px;flex-wrap:wrap}
.hero .stats div{font-size:14px;opacity:.9}
.hero .stats b{display:block;font-size:30px;font-weight:800}
.hero .badges{margin-top:22px;display:flex;gap:10px;flex-wrap:wrap}
.hero .badges span{background:rgba(255,255,255,.16);padding:6px 14px;border-radius:999px;font-size:13px}

/* Sections */
.section{padding:64px 0}
.section.alt{background:#fff}
.section-head{text-align:center;max-width:720px;margin:0 auto 40px}
.section-head .eyebrow{color:var(--brand);font-weight:700;letter-spacing:2px;font-size:13px;text-transform:uppercase}
.section-head h2{font-size:30px;margin:8px 0 12px}
.section-head p{color:var(--ink-soft);margin:0}

/* Grid / cards */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:.2s}
.card:hover{transform:translateY(-3px);border-color:var(--brand)}
.card .ic{width:48px;height:48px;border-radius:12px;background:var(--brand-light);color:var(--brand);display:grid;place-items:center;font-size:24px;margin-bottom:14px}
.card h3{margin:0 0 8px;font-size:18px}
.card p{color:var(--ink-soft);font-size:14px;margin:0 0 14px}
.card a.more{color:var(--brand);font-weight:600;font-size:14px}
.card.accent .ic{background:var(--accent-light);color:var(--accent)}
.card.scenario{display:flex;flex-direction:column}
.card.scenario p+p{margin-top:10px}
.card.scenario .save{margin-top:14px;padding-top:13px;border-top:1px dashed var(--line);color:var(--accent);font-weight:700;font-size:14px}
.card.scenario .save b{font-size:16px}
.card.scenario h3{font-size:17px}
.card.scenario.full{grid-column:1/-1;flex-direction:row;gap:32px;align-items:stretch}
.card.scenario.full .scenario-text{flex:1.1;display:flex;flex-direction:column}
.card.scenario.full .scenario-text .save{margin-top:auto}
.card.scenario.full .scenario-flow{flex:1;border-left:1px dashed var(--line);padding-left:32px;display:flex;flex-direction:column;justify-content:center}
@media(max-width:880px){
  .card.scenario.full{flex-direction:column;gap:20px}
  .card.scenario.full .scenario-flow{border-left:none;border-top:1px dashed var(--line);padding-left:0;padding-top:20px}
}
.more-scenes-wrap{text-align:center;margin-top:28px}
.more-scenes{margin-top:24px;text-align:left}
.more-scenes[hidden]{display:none}
.more-scenes .card.scenario.full + .card.scenario.full{margin-top:22px}

/* 场景区：行业锚点条 / 行业标签 / 弱场景栅格 */
[id]{scroll-margin-top:96px}
.scene-anchors{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin:-18px 0 32px}
.scene-anchors a{font-size:13px;padding:7px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--ink-soft);transition:.2s}
.scene-anchors a:hover{border-color:var(--brand);color:var(--brand)}
.scene-tag{display:inline-block;align-self:flex-start;font-size:12px;font-weight:600;padding:3px 11px;border-radius:999px;background:var(--brand-light);color:var(--brand);margin-bottom:12px}
.scene-tag.alt{background:var(--accent-light);color:var(--accent)}
.scene-weak{margin-top:22px}
.scene-weak .card.scenario .save{margin-top:auto}
@media(max-width:880px){
  .scene-anchors{margin:-8px 0 26px}
}

/* Steps */
.steps{counter-reset:s;display:grid;gap:18px}
.step{display:flex;gap:16px;align-items:flex-start}
.step::before{counter-increment:s;content:counter(s);flex:0 0 38px;width:38px;height:38px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:700}
.step h4{margin:6px 0 4px;font-size:16px}
.step p{margin:0;color:var(--ink-soft);font-size:14px}

/* News */
.news-item{display:flex;gap:18px;padding:18px 0;border-bottom:1px solid var(--line);align-items:center}
.news-item .date{flex:0 0 86px;color:var(--ink-soft);font-size:13px}
.news-item .title{font-weight:600}
.news-item .title:hover{color:var(--brand)}
.tag{display:inline-block;font-size:12px;padding:2px 10px;border-radius:999px;background:var(--brand-light);color:var(--brand);margin-left:8px}

/* Pricing */
.price-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow);display:flex;flex-direction:column}
.price-card.featured{border:2px solid var(--brand);position:relative}
.price-card .ribbon{position:absolute;top:-12px;right:24px;background:var(--accent);color:#fff;font-size:12px;padding:4px 12px;border-radius:999px}
.price-card h3{margin:0 0 4px;font-size:20px}
.price-card .price{font-size:30px;font-weight:800;color:var(--brand);margin:10px 0}
.price-card .price small{font-size:14px;color:var(--ink-soft);font-weight:500}
.price-card ul{list-style:none;padding:0;margin:14px 0 22px;font-size:14px;color:var(--ink-soft)}
.price-card ul li{padding:7px 0;border-bottom:1px dashed var(--line);display:flex;gap:8px}
.price-card ul li::before{content:"✓";color:var(--accent);font-weight:800}

/* Form */
.form-wrap{max-width:620px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.field{margin-bottom:18px}
.field label{display:block;font-weight:600;margin-bottom:7px;font-size:14px}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:15px;font-family:inherit;background:#fff}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-light)}
.form-note{font-size:13px;color:var(--ink-soft);text-align:center;margin-top:14px}
.form-msg{padding:12px 16px;border-radius:10px;margin-bottom:18px;font-size:14px;display:none}
.form-msg.ok{display:block;background:#e7f7ee;color:var(--ok)}
.form-msg.err{display:block;background:#fdeaea;color:#d23b3b}

/* Contact info */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:start}

/* Consult widget */
.consult-fab{position:fixed;right:22px;bottom:22px;z-index:60;display:flex;align-items:center;gap:10px;background:var(--brand);color:#fff;padding:14px 20px;border-radius:999px;box-shadow:0 10px 30px rgba(26,92,255,.4);cursor:pointer;font-weight:600}
.consult-fab:hover{background:var(--brand-dark)}
.consult-panel{position:fixed;right:22px;bottom:84px;width:300px;background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(20,40,90,.22);z-index:60;display:none;overflow:hidden}
.consult-panel.show{display:block}
.consult-panel .hd{background:var(--brand);color:#fff;padding:16px;font-weight:700}
.consult-panel .bd{padding:16px;font-size:14px;color:var(--ink-soft)}
.consult-panel .qr{width:160px;margin:10px auto;border-radius:8px;border:1px solid var(--line);display:block}

/* CTA band */
.cta-band{background:linear-gradient(135deg,var(--brand-dark),var(--brand));color:#fff;text-align:center;padding:54px 0}
.cta-band h2{font-size:28px;margin:0 0 14px}
.cta-band p{opacity:.9;margin:0 0 22px}

/* Footer */
.site-footer{background:#0e1730;color:#c4cde0;padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}
.site-footer h4{color:#fff;font-size:15px;margin:0 0 14px}
.site-footer a{color:#c4cde0;font-size:14px;display:block;margin-bottom:9px}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:32px;padding-top:18px;font-size:13px;text-align:center;color:#8b97b3}

/* Article */
.article{max-width:760px;margin:0 auto}
.article h1{font-size:30px;margin:10px 0 8px}
.article .meta{color:var(--ink-soft);font-size:14px;margin-bottom:24px}
.article p{margin:0 0 18px}
.breadcrumb{font-size:13px;color:var(--ink-soft);margin:18px 0}
.breadcrumb a:hover{color:var(--brand)}

@media(max-width:880px){
  .grid-3,.grid-2,.grid-4,.contact-grid,.footer-grid{grid-template-columns:1fr}
  .nav-links{position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:0 20px;max-height:0;overflow:hidden;border-bottom:1px solid var(--line);transition:.25s}
  .nav-links.open{max-height:480px;padding:10px 20px 18px}
  .nav-links a{padding:12px 0;border-bottom:1px solid var(--line);width:100%}
  .menu-toggle{display:block}
  .hero h1{font-size:30px}
  .hero .stats{gap:22px}
}