:root{
  --primary:#2563eb;
  --primary-dark:#1d4ed8;
  --accent:#10b981;
  --bg:#ffffff;
  --bg-soft:#f8fafc;
  --ink:#0f172a;
  --muted:#64748b;
  --faint:#94a3b8;
  --line:#e2e8f0;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,Segoe UI,sans-serif;background:var(--bg);color:var(--ink);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1120px;margin:0 auto;padding:0 24px}
.container-narrow{max-width:820px}

/* 头部 */
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:9px}
.brand-logo{width:32px;height:32px;border-radius:8px;background:linear-gradient(135deg,var(--primary),#3b82f6);color:#fff;display:grid;place-items:center;font-size:15px;font-weight:800}
.brand-word{font-size:20px;font-weight:800;letter-spacing:1px}
.brand-word em{font-style:normal;color:var(--primary)}
.brand-tag{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:4px;padding:1px 8px}
.main-nav{display:flex;gap:24px;margin-left:auto}
.main-nav a{font-size:15px;color:var(--muted);padding:4px 0}
.main-nav a:hover{color:var(--ink)}
.header-right{display:flex;align-items:center;gap:10px}
.btn{display:inline-block;border-radius:8px;font-weight:600;cursor:pointer;transition:.18s;border:none}
.btn-sm{padding:8px 16px;font-size:14px}
.btn-lg{padding:14px 28px;font-size:16px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark)}
.btn-ghost{border:1.5px solid #d4dbe8;color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-block{display:block;text-align:center}
.nav-toggle{display:none;background:none;border:none;font-size:22px;cursor:pointer;color:var(--ink)}

/* Hero */
.hero{padding:72px 0 88px;background:linear-gradient(180deg,#eef4ff 0%,#fff 70%)}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.pill{display:inline-block;font-size:13px;color:var(--primary);background:#e8f0fe;border:1px solid #d3e2fd;border-radius:99px;padding:5px 14px;font-weight:600;margin-bottom:22px}
.hero h1{font-size:52px;line-height:1.18;font-weight:800}
.hero h1 em{font-style:normal;color:var(--primary)}
.lead{margin:20px 0 30px;font-size:17px;color:var(--muted);max-width:520px}
.hero-actions{display:flex;gap:14px;margin-bottom:44px}
.hero-trust{list-style:none;display:flex;gap:40px;flex-wrap:wrap}
.hero-trust li{display:flex;flex-direction:column}
.hero-trust b{font-size:28px;font-weight:800;color:var(--ink)}
.hero-trust span{font-size:13px;color:var(--faint)}

/* 产品截图 */
.hero-figure{display:grid;place-items:center}
.shot{width:100%;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 20px 50px rgba(15,23,42,.12)}
.shot-bar{display:flex;align-items:center;gap:7px;padding:12px 16px;border-bottom:1px solid var(--line);background:#f8fafc}
.shot-bar .d{width:11px;height:11px;border-radius:50%;background:#cbd5e1}
.shot-title{margin-left:10px;font-size:12px;color:var(--faint)}
.shot-body{padding:18px}
.kpi{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:16px}
.kpi>div{border:1px solid var(--line);border-radius:10px;padding:14px}
.kpi span{font-size:12px;color:var(--faint)}
.kpi b{display:block;font-size:20px;font-weight:800;margin-top:4px}
.kpi b.g{color:var(--accent)}
.kpi.two{grid-template-columns:1fr 1fr}
.tbl{font-size:13px}
.tr{display:grid;grid-template-columns:1.1fr 1.4fr 1fr .9fr;gap:8px;padding:9px 8px;border-bottom:1px solid var(--line);align-items:center}
.tr.head{color:var(--faint);font-weight:600}
.pf{display:inline-block;font-size:11px;font-weight:600;border-radius:4px;padding:2px 8px;width:max-content}
.pf-1688{background:#fff3e6;color:#ff7a00}
.pf-tb{background:#ffece6;color:#ff4400}
.pf-tm{background:#ffe6ea;color:#e60012}
.pf-pdd{background:#fdeaea;color:#e02e24}
.pf-jd{background:#fbeaeb;color:#c9161d}
.ok{color:var(--accent)}
.warn{color:#d97706}
.pf-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.money-row{display:flex;gap:12px;align-items:center;font-size:15px;font-weight:700;margin-bottom:6px}
.money-note{font-size:13px;color:var(--faint);margin-bottom:16px}
.track{display:flex;flex-direction:column;gap:16px;padding:6px 0}
.tk{display:flex;gap:12px;position:relative;padding-left:22px}
.tk .dot{position:absolute;left:0;top:6px;width:12px;height:12px;border-radius:50%;background:#cbd5e1}
.tk.done .dot{background:var(--accent)}
.tk.now .dot{background:var(--primary)}
.tk b{font-size:14px}
.tk p{font-size:12px;color:var(--faint)}

/* 平台条 */
.platforms{padding:44px 0;border-bottom:1px solid var(--line)}
.platforms-label{text-align:center;color:var(--muted);font-size:14px;margin-bottom:18px}
.pf-list{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}
.pf-list .pf{font-size:15px;padding:8px 24px;border-radius:8px}

/* 区块 */
.section{padding:88px 0}
.section-soft{background:var(--bg-soft)}
.sec-head{max-width:640px;margin:0 auto 52px;text-align:center}
.sec-head h2{font-size:36px;font-weight:800;line-height:1.3}
.sec-head h2 em{font-style:normal;color:var(--primary)}
.sec-head p{margin-top:12px;color:var(--muted)}

/* 利润点 */
.profit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.profit-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:28px 24px;transition:.18s}
.profit-card:hover{border-color:var(--primary);box-shadow:0 10px 30px rgba(37,99,235,.08);transform:translateY(-2px)}
.profit-card .no{font-size:28px;font-weight:800;color:var(--primary);display:block;margin-bottom:12px}
.profit-card h3{font-size:18px;margin-bottom:8px}
.profit-card p{font-size:14px;color:var(--muted)}

/* 交错图文 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;margin-bottom:84px}
.split:last-child{margin-bottom:0}
.split-copy .step{font-size:15px;font-weight:800;color:var(--primary);background:#e8f0fe;border-radius:6px;padding:3px 12px;display:inline-block;margin-bottom:16px}
.split-copy h3{font-size:26px;margin-bottom:14px}
.split-copy p{font-size:15.5px;color:var(--muted);margin-bottom:18px}
.split-copy ul{list-style:none}
.split-copy ul li{font-size:14.5px;color:var(--ink);padding:7px 0;padding-left:22px;position:relative}
.split-copy ul li::before{content:"✓";position:absolute;left:0;top:7px;color:var(--accent);font-weight:700}
.split-figure .shot{box-shadow:0 18px 44px rgba(15,23,42,.1)}

/* 流程 */
.timeline{list-style:none;display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.timeline li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px 18px}
.timeline li span{display:inline-grid;place-items:center;width:32px;height:32px;border-radius:50%;background:var(--primary);color:#fff;font-weight:700;margin-bottom:12px}
.timeline li b{display:block;font-size:16px;margin-bottom:4px}
.timeline li p{font-size:13px;color:var(--faint)}

/* 案例 */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.case-thumb{height:110px;display:grid;place-items:center;font-size:30px;font-weight:800;color:var(--primary);background:linear-gradient(135deg,#eef4ff,#f8fafc)}
.case-body{padding:22px}
.case-body span{font-size:12px;color:var(--primary);background:#e8f0fe;border-radius:99px;padding:3px 12px;font-weight:600}
.case-body h3{font-size:18px;margin:12px 0 8px}
.case-body p{font-size:14px;color:var(--muted)}

/* FAQ */
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;font-weight:600;font-size:16px;padding:20px 0;list-style:none;position:relative;color:var(--ink)}
.faq summary::after{content:"＋";position:absolute;right:4px;color:var(--primary);font-size:18px}
.faq details[open] summary::after{content:"－"}
.faq details p{padding:0 0 20px;color:var(--muted)}

/* CTA（蓝色，非深色） */
.cta-panel{background:linear-gradient(135deg,#2563eb,#3b82f6);border-radius:18px;padding:52px;display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}
.cta-copy h2{font-size:32px;margin-bottom:12px;color:#fff}
.cta-copy h2 em{font-style:normal;color:#bfdbfe}
.cta-copy>p{color:#e0edff;margin-bottom:28px}
.cta-actions{display:flex;gap:14px}
.cta-panel .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff;background:transparent}
.cta-panel .btn-ghost:hover{background:rgba(255,255,255,.12)}
.cta-panel .btn-primary{background:#fff;color:var(--primary)}
.cta-panel .btn-primary:hover{background:#e8f0fe}
.cta-qr{background:#fff;color:var(--ink);border-radius:12px;padding:22px;text-align:center}
.cta-qr img{width:150px;margin:0 auto 12px}
.cta-qr p{font-size:13px;color:var(--muted)}

/* 页脚（浅色，非深色） */
.footer{background:var(--bg-soft);border-top:1px solid var(--line);color:var(--muted);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;padding-bottom:38px}
.footer-brand .brand-word{font-size:22px;color:var(--ink);letter-spacing:1px}
.footer-brand .brand-word em{color:var(--primary)}
.footer-brand p{margin-top:14px;font-size:14px;color:var(--muted);max-width:360px}
.footer h4{color:var(--ink);font-size:15px;margin-bottom:16px}
.footer ul{list-style:none;display:flex;flex-direction:column;gap:10px;font-size:14px}
.footer ul a:hover{color:var(--primary)}
.footer-bottom{border-top:1px solid var(--line);padding:22px 0 26px;font-size:13px;color:var(--faint);text-align:center}
.footer-bottom a{color:var(--faint)}
.footer-bottom a:hover{color:var(--primary)}
.footer-bottom p{margin:6px 0}

/* 弹窗 */
.modal-overlay{position:fixed;inset:0;background:rgba(15,23,42,.5);display:none;align-items:center;justify-content:center;z-index:100}
.modal-overlay.show{display:flex}
.modal{background:#fff;border-radius:14px;padding:32px;width:360px;max-width:92vw;text-align:center;position:relative}
.modal-close{position:absolute;top:14px;right:14px;background:none;border:none;font-size:18px;cursor:pointer;color:var(--faint)}
.modal h3{font-size:20px;margin-bottom:6px}
.modal .sub{color:var(--muted);font-size:14px;margin-bottom:18px}
.modal-qr{width:180px;margin:0 auto 18px;border-radius:10px}
.modal-row{display:flex;justify-content:center;gap:12px;margin:8px 0;font-size:14px}
.modal-row span{color:var(--faint)}
.modal .btn-block{margin-top:18px}

/* 悬浮微信 */
.float-wx{position:fixed;right:20px;bottom:24px;z-index:60}
.wx-pop{display:none;position:absolute;right:0;bottom:70px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;width:180px;text-align:center;box-shadow:0 10px 30px rgba(0,0,0,.12)}
.wx-pop.show{display:block}
.wx-pop img{width:140px;margin:0 auto 8px;border-radius:8px}
.wx-pop b{font-size:14px}
.wx-pop p{font-size:12px;color:var(--faint);margin-top:4px}
.wx-fab{width:56px;height:56px;border-radius:50%;background:var(--primary);color:#fff;font-size:12px;font-weight:700;display:grid;place-items:center;line-height:1.2;cursor:pointer;box-shadow:0 6px 18px rgba(37,99,235,.4)}

/* 响应式 */
@media (max-width:920px){
  .hero h1{font-size:38px}
  .hero-grid{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:32px}
  .profit-grid{grid-template-columns:1fr 1fr}
  .timeline{grid-template-columns:repeat(3,1fr)}
  .case-grid{grid-template-columns:1fr}
  .cta-panel{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .hero h1{font-size:30px}
  .nav-toggle{display:block}
  .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;padding:16px 24px;border-bottom:1px solid var(--line)}
  .main-nav.open{display:flex}
  .profit-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .kpi{grid-template-columns:1fr}
}