:root{
      --pink:#e91e63;
      --pink-dark:#a80f47;
      --pink-soft:#fff0f5;
      --ink:#241923;
      --muted:#6f626a;
      --line:#eadde3;
      --paper:#fffafc;
      --white:#fff;
      --green:#177b63;
      --shadow:0 16px 42px rgba(92,28,57,.1);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;height:auto;display:block}
    .container{width:min(var(--container),calc(100% - 36px));margin:0 auto}
    .topbar{background:#211820;color:#f9eaf0;font-size:13px}
    .topbar-inner{min-height:34px;display:flex;align-items:center;justify-content:space-between;gap:16px}
    .topbar a{color:#ffd1e1}
    header{position:sticky;top:0;z-index:20;background:rgba(255,250,252,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}
    .nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
    .ai-page-logo{width:112px;max-height:46px;object-fit:contain}
    .brand-name{font-weight:800;letter-spacing:1px;color:var(--pink-dark)}
    .nav-links{display:flex;align-items:center;justify-content:flex-end;gap:0;flex-wrap:wrap}
    .nav-links a{font-size:13px;color:#55454d;padding:8px 9px;transition:.2s}
    .nav-links a:hover{color:var(--pink);background:var(--pink-soft)}
    .nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;border:0;cursor:pointer;font:inherit;font-weight:700;border-radius:6px;padding:12px 20px;transition:transform .2s,box-shadow .2s,background .2s}
    .nav-cta,.button-primary{background:var(--pink);color:#fff;box-shadow:0 8px 20px rgba(233,30,99,.22)}
    .nav-cta:hover,.button-primary:hover{transform:translateY(-2px);background:var(--pink-dark);box-shadow:0 12px 24px rgba(168,15,71,.24)}
    .menu-toggle{display:none;background:transparent;border:1px solid var(--line);color:var(--ink);padding:8px 11px;border-radius:5px}
    .hero{position:relative;overflow:hidden;background:#f5d7e3;padding:76px 0 70px;border-bottom:1px solid #edc5d4}
    .hero:before,.hero:after{content:"";position:absolute;pointer-events:none;border:1px solid rgba(168,15,71,.18);transform:rotate(25deg)}
    .hero:before{width:280px;height:280px;right:-70px;top:-90px}
    .hero:after{width:170px;height:170px;left:-50px;bottom:-80px}
    .hero-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(300px,.9fr);gap:52px;align-items:center;position:relative;z-index:1}
    .eyebrow{color:var(--pink-dark);font-weight:800;letter-spacing:2px;font-size:13px;text-transform:uppercase}
    h1,h2,h3{line-height:1.25;margin:0 0 16px;letter-spacing:0}
    h1{font-size:clamp(36px,6vw,68px);max-width:650px}
    h2{font-size:clamp(27px,4vw,42px)}
    h3{font-size:20px}
    .hero-copy{font-size:18px;color:#573d48;max-width:650px;margin:0 0 28px}
    .actions{display:flex;flex-wrap:wrap;gap:12px}
    .button-outline{border:1px solid var(--pink-dark);color:var(--pink-dark);background:transparent}
    .button-outline:hover{background:#fff;transform:translateY(-2px)}
    .hero-panel{background:#fff;border:1px solid #efd1dc;padding:26px;box-shadow:var(--shadow)}
    .hero-panel strong{display:block;font-size:34px;color:var(--pink-dark);line-height:1.1}
    .hero-panel p{color:var(--muted);margin:7px 0 20px}
    .mini-flow{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
    .mini-flow span{background:var(--pink-soft);padding:10px 7px;text-align:center;font-size:12px;color:var(--pink-dark)}
    section{padding:82px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:30px}
    .section-head p{max-width:570px;color:var(--muted);margin:0}
    .kicker{font-size:13px;color:var(--pink);font-weight:800;letter-spacing:1px;margin-bottom:8px}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:-28px;position:relative;z-index:2}
    .metric{background:#fff;border:1px solid var(--line);padding:22px;box-shadow:0 9px 24px rgba(71,28,47,.07)}
    .metric b{font-size:29px;color:var(--pink-dark);display:block}
    .metric span{color:var(--muted);font-size:14px}
    .about{background:#fff}
    .about-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start}
    .lead{font-size:18px;color:#493842}
    .check-list{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:12px}
    .check-list li{padding:12px 14px;background:#fff7fa;border-left:3px solid var(--pink)}
    .service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .service-card{background:#fff;border:1px solid var(--line);padding:22px;min-height:220px;transition:.25s}
    .service-card:hover,.case:hover,.review:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
    .service-card .number{color:var(--pink);font-weight:800;font-size:14px}
    .service-card p,.case p,.review p{color:var(--muted);font-size:14px;margin:0}
    .soft-band{background:#fff0f5}
    .flow{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:2px solid var(--pink)}
    .flow-step{padding:24px 16px 10px;position:relative}
    .flow-step:before{content:"";width:12px;height:12px;border-radius:50%;background:var(--pink);position:absolute;top:-7px;left:16px;box-shadow:0 0 0 5px #fff0f5}
    .flow-step b{color:var(--pink-dark);font-size:14px}
    .flow-step h3{font-size:17px;margin:8px 0}
    .flow-step p{font-size:14px;color:var(--muted);margin:0}
    .solution-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .solution{background:#fff;border:1px solid var(--line);padding:24px}
    .solution h3{color:var(--pink-dark)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:9px}
    .tag-cloud span{border:1px solid #efb5ca;background:#fff;color:#8d2551;padding:7px 12px;font-size:13px;border-radius:30px}
    .media-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .media-card{background:#fff;border:1px solid var(--line);overflow:hidden}
    .media-card .media-image{aspect-ratio:16/9;overflow:hidden;background:#f7e4eb}
    .media-card img{width:100%;height:100%;object-fit:cover}
    .media-card div:last-child{padding:17px}
    .media-card h3{font-size:18px;margin-bottom:6px}
    .comparison{background:#211820;color:#fff}
    .comparison .section-head p{color:#d9c6ce}
    .rating{display:flex;align-items:center;gap:18px;margin-bottom:24px}
    .stars{color:#ff77a5;font-size:25px;letter-spacing:3px}
    .rating strong{font-size:36px;color:#fff}
    .table-wrap{overflow-x:auto;background:#2c2028}
    table{width:100%;border-collapse:collapse;min-width:720px}
    th,td{text-align:left;padding:15px 16px;border-bottom:1px solid #513c47;font-size:14px}
    th{color:#ffc2d6;background:#36252e}
    td:first-child{color:#ffdbe6;font-weight:700}
    .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .price-box{background:#fff;border:1px solid var(--line);padding:25px}
    .price-box.featured{border:2px solid var(--pink);position:relative}
    .price-box .label{color:var(--pink);font-weight:800;font-size:13px}
    .price-box strong{font-size:26px;display:block;margin:10px 0}
    .price-box p{color:var(--muted);margin:0}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review{background:#fff;border:1px solid var(--line);padding:22px;transition:.25s}
    .review .person{font-weight:800;color:var(--pink-dark);margin-top:15px;font-size:14px}
    .review .stars-small{color:#e91e63;letter-spacing:2px}
    .faq-list{display:grid;gap:10px;max-width:900px}
    details{background:#fff;border:1px solid var(--line);padding:0 18px}
    summary{cursor:pointer;list-style:none;font-weight:700;padding:17px 28px 17px 0;position:relative}
    summary:after{content:"+";position:absolute;right:0;color:var(--pink);font-size:22px;top:12px}
    details[open] summary:after{content:"−"}
    details p{color:var(--muted);margin:0 0 17px;padding-right:25px}
    .contact{background:#fff0f5}
    .contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:42px;align-items:start}
    .contact-list{display:grid;gap:12px;margin-top:25px}
    .contact-list div{background:#fff;border-left:3px solid var(--pink);padding:12px 15px}
    form{background:#fff;padding:25px;border:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:15px}
    .field{display:grid;gap:6px}
    .field.full{grid-column:1/-1}
    label{font-size:13px;font-weight:700;color:#5b424d}
    input,select,textarea{width:100%;border:1px solid #dccbd3;background:#fffafc;padding:12px 13px;border-radius:4px;font:inherit;color:var(--ink)}
    textarea{min-height:120px;resize:vertical}
    form .button{justify-self:start}
    .join{display:flex;justify-content:space-between;align-items:center;gap:25px;background:#fff;border:1px solid var(--line);padding:28px}
    .article-links{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
    .article-links a{background:#fff;border:1px solid var(--line);padding:13px;font-size:13px;color:var(--pink-dark);transition:.2s}
    .article-links a:hover{border-color:var(--pink);background:var(--pink-soft)}
    footer{background:#211820;color:#eadbe1;padding:44px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:35px}
    footer h3{color:#fff;font-size:18px}
    footer p,footer li,footer a{font-size:14px;color:#cdbbc3}
    footer ul{list-style:none;padding:0;margin:0;display:grid;gap:7px}
    footer a:hover{color:#ff9fc0}
    .footer-bottom{border-top:1px solid #48353e;margin-top:30px;padding-top:18px;font-size:13px;color:#ad969f}
    .float-contact{position:fixed;right:18px;bottom:22px;z-index:15;background:var(--pink);color:#fff;padding:13px 16px;border-radius:28px;box-shadow:0 10px 25px rgba(158,15,69,.3);font-size:14px;font-weight:700}
    .reveal{opacity:0;transform:translateY(18px);transition:opacity .65s ease,transform .65s ease}
    .reveal.visible{opacity:1;transform:none}
    @media(max-width:1050px){
      .nav-links{display:none;position:absolute;left:18px;right:18px;top:68px;background:#fff;border:1px solid var(--line);padding:10px;box-shadow:var(--shadow)}
      .nav-links.open{display:grid;grid-template-columns:repeat(3,1fr)}
      .nav-links a{text-align:center}
      .menu-toggle{display:block}
      .service-grid{grid-template-columns:repeat(2,1fr)}
      .article-links{grid-template-columns:repeat(3,1fr)}
    }
    @media(max-width:720px){
      .container{width:min(var(--container),calc(100% - 28px))}
      .topbar-inner{padding:7px 0;align-items:flex-start;flex-direction:column;gap:2px}
      .brand-name{display:none}
      .hero{padding:58px 0 52px}
      .hero-grid,.about-grid,.solution-grid,.contact-grid{grid-template-columns:1fr;gap:28px}
      h1{font-size:42px}
      section{padding:58px 0}
      .metrics{grid-template-columns:repeat(2,1fr);margin-top:-18px}
      .service-grid,.reviews,.price-grid{grid-template-columns:1fr}
      .flow{grid-template-columns:1fr;border-top:0;border-left:2px solid var(--pink);margin-left:10px}
      .flow-step{padding:12px 10px 18px 25px}
      .flow-step:before{left:-7px;top:15px}
      .section-head{display:block}
      .section-head p{margin-top:12px}
      .media-grid{grid-template-columns:1fr}
      .join{display:block}
      .join .button{margin-top:18px}
      form{grid-template-columns:1fr}
      .field.full{grid-column:auto}
      .article-links{grid-template-columns:1fr 1fr}
      .footer-grid{grid-template-columns:1fr;gap:22px}
    }
    @media(prefers-reduced-motion:reduce){
      *,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}
      .reveal{opacity:1;transform:none}
    }