:root{
  --ink:#202238;
  --muted:#65677b;
  --paper:#fffaf4;
  --paper-2:#fff;
  --line:#ece7e1;
  --pink:#ff6e91;
  --orange:#ff9b5e;
  --yellow:#f7ca5c;
  --mint:#65cdb7;
  --blue:#6c9bf8;
  --violet:#9c7bea;
  --shadow:0 18px 50px rgba(60,47,75,.10);
  --radius:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  background:
    radial-gradient(circle at 8% 16%,rgba(255,191,209,.18),transparent 23rem),
    radial-gradient(circle at 92% 36%,rgba(167,218,255,.18),transparent 25rem),
    linear-gradient(180deg,#fffaf4 0%,#fff 38%,#fffaf7 100%);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
  line-height:1.7;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.site-header{
  position:sticky;top:0;z-index:30;
  background:rgba(255,250,244,.9);
  border-bottom:1px solid rgba(236,231,225,.9);
  backdrop-filter:blur(18px);
}
.navbar{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.ai-page-logo{width:42px;height:42px;object-fit:contain}
.brand-name{font-size:18px;font-weight:800;letter-spacing:0;color:#26253c}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;justify-content:flex-end}
.nav-links a{padding:8px 9px;color:#55566a;font-size:13px;transition:.25s}
.nav-links a:hover{color:var(--pink)}
.nav-cta,.button{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;border-radius:999px;padding:12px 20px;font-weight:700;
  cursor:pointer;transition:transform .25s,box-shadow .25s,background .25s;
}
.nav-cta{background:var(--ink);color:#fff;margin-left:12px;font-size:13px}
.button:hover,.nav-cta:hover{transform:translateY(-3px);box-shadow:0 12px 24px rgba(40,35,62,.16)}
.button.primary{background:linear-gradient(100deg,var(--pink),var(--orange));color:#fff}
.button.soft{background:#fff;border:1px solid var(--line);color:var(--ink)}
.button.dark{background:var(--ink);color:#fff}
.menu-toggle{display:none;border:0;background:none;font-size:26px;color:var(--ink)}
.hero{position:relative;overflow:hidden;padding:88px 0 74px;min-height:620px}
.hero:before,.hero:after{content:"";position:absolute;z-index:-1;border-radius:50%;filter:blur(2px)}
.hero:before{width:360px;height:360px;right:-110px;top:30px;background:linear-gradient(135deg,rgba(255,117,158,.28),rgba(111,153,255,.2))}
.hero:after{width:240px;height:240px;left:-100px;bottom:-70px;background:linear-gradient(135deg,rgba(102,208,184,.24),rgba(251,207,92,.25))}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:70px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:9px;color:#d94f78;font-weight:800;font-size:13px;letter-spacing:1px}
.eyebrow:before{content:"";width:28px;height:3px;border-radius:4px;background:linear-gradient(90deg,var(--pink),var(--orange))}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(38px,5vw,70px);line-height:1.12;letter-spacing:0;margin:18px 0 22px;max-width:700px}
.hero-copy{font-size:18px;color:var(--muted);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0}
.hero-note{font-size:13px;color:#79798b}
.hero-visual{position:relative;min-height:390px}
.visual-board{
  position:absolute;inset:20px 10px 16px 20px;
  padding:24px;border:1px solid rgba(255,255,255,.9);
  border-radius:28px;background:rgba(255,255,255,.75);
  box-shadow:var(--shadow);transform:rotate(2deg);
}
.visual-board:before{content:"";display:block;width:90px;height:9px;border-radius:8px;background:linear-gradient(90deg,var(--pink),var(--yellow),var(--mint),var(--blue));margin-bottom:24px}
.board-title{font-size:22px;font-weight:800;margin-bottom:20px}
.board-flow{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.flow-chip{padding:15px;border-radius:16px;background:#fff;border:1px solid #f0ebea;font-size:13px;font-weight:700}
.flow-chip:nth-child(1){border-left:5px solid var(--pink)}
.flow-chip:nth-child(2){border-left:5px solid var(--orange)}
.flow-chip:nth-child(3){border-left:5px solid var(--mint)}
.flow-chip:nth-child(4){border-left:5px solid var(--blue)}
.board-footer{margin-top:22px;padding:16px;border-radius:16px;background:linear-gradient(100deg,#fff0f4,#fff7e9);font-size:13px;color:#616174}
.floating-tag{position:absolute;padding:11px 15px;border-radius:14px;background:#fff;box-shadow:0 10px 28px rgba(48,42,69,.12);font-weight:800;font-size:13px}
.tag-a{right:-4px;top:4px;color:#d84f78}
.tag-b{left:-4px;bottom:4px;color:#198e7e}
.section{padding:92px 0}
.section.alt{background:rgba(255,255,255,.58)}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:38px}
.section-head h2{font-size:clamp(28px,3.5vw,44px);line-height:1.2;margin:8px 0 0}
.section-head p{max-width:560px;color:var(--muted);margin-bottom:0}
.kicker{font-size:12px;color:#ce5d7c;font-weight:800;letter-spacing:2px}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.metric{padding:24px;border-radius:18px;background:#fff;border:1px solid var(--line);position:relative;overflow:hidden}
.metric:after{content:"";position:absolute;right:-20px;top:-20px;width:80px;height:80px;border-radius:50%;background:rgba(255,110,145,.1)}
.metric:nth-child(2):after{background:rgba(108,155,248,.12)}
.metric:nth-child(3):after{background:rgba(101,205,183,.13)}
.metric:nth-child(4):after{background:rgba(247,202,92,.17)}
.metric strong{font-size:34px;line-height:1.1;display:block;margin-bottom:8px}
.metric span{color:var(--muted);font-size:14px}
.intro-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:58px;align-items:start}
.intro-lead{font-size:22px;line-height:1.55;font-weight:700}
.intro-text{color:var(--muted)}
.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.feature{padding:20px;border-top:3px solid var(--pink);background:#fff;border-radius:16px;box-shadow:0 9px 28px rgba(45,38,58,.05)}
.feature:nth-child(2){border-color:var(--blue)}
.feature:nth-child(3){border-color:var(--mint)}
.feature:nth-child(4){border-color:var(--orange)}
.feature h3{font-size:17px;margin-bottom:7px}
.feature p{font-size:14px;color:var(--muted);margin:0}
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.service-card{padding:25px;background:#fff;border:1px solid var(--line);border-radius:20px;transition:.28s}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.service-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:13px;color:#fff;font-weight:900;margin-bottom:17px;background:linear-gradient(135deg,var(--pink),var(--orange))}
.service-card:nth-child(3n+2) .service-icon{background:linear-gradient(135deg,var(--blue),var(--violet))}
.service-card:nth-child(3n) .service-icon{background:linear-gradient(135deg,var(--mint),var(--blue))}
.service-card h3{font-size:18px;margin-bottom:8px}
.service-card p{color:var(--muted);font-size:14px;margin:0}
.service-card ul{padding-left:18px;color:var(--muted);font-size:13px;margin:12px 0 0}
.service-card li{margin:3px 0}
.process{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative}
.process:before{content:"";position:absolute;top:26px;left:8%;right:8%;height:2px;background:linear-gradient(90deg,var(--pink),var(--orange),var(--mint),var(--blue));z-index:0}
.step{position:relative;z-index:1;text-align:center;padding:0 10px}
.step-number{width:54px;height:54px;margin:0 auto 17px;border-radius:50%;display:grid;place-items:center;background:#fff;border:7px solid #fff;box-shadow:0 0 0 2px var(--pink);font-weight:900;color:var(--pink)}
.step:nth-child(2) .step-number{box-shadow:0 0 0 2px var(--orange);color:var(--orange)}
.step:nth-child(3) .step-number{box-shadow:0 0 0 2px var(--yellow);color:#b27b00}
.step:nth-child(4) .step-number{box-shadow:0 0 0 2px var(--mint);color:#198e7e}
.step:nth-child(5) .step-number{box-shadow:0 0 0 2px var(--blue);color:var(--blue)}
.step h3{font-size:16px;margin-bottom:6px}
.step p{font-size:13px;color:var(--muted);margin:0}
.solution-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.solution{padding:30px;border-radius:22px;background:linear-gradient(135deg,#fff0f4,#fff);border:1px solid #f6d8e1}
.solution:nth-child(2){background:linear-gradient(135deg,#eef7ff,#fff);border-color:#d9e8ff}
.solution h3{font-size:22px;margin-bottom:10px}
.solution p{color:var(--muted);font-size:14px}
.solution-tags,.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.pill{padding:7px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#5d6072}
.tag-cloud{max-width:900px}
.tag-cloud span{padding:9px 14px;border-radius:9px;font-size:13px;background:#fff;border:1px solid var(--line)}
.media-strip{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;margin-top:28px}
.media-frame{overflow:hidden;border-radius:18px;background:#fff;border:1px solid var(--line)}
.media-frame img{width:100%;aspect-ratio:16/8;object-fit:cover}
.media-stack{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.media-stack .media-frame img{aspect-ratio:1.2/1;object-fit:cover}
.compare-wrap{overflow:auto;border:1px solid var(--line);border-radius:18px;background:#fff}
.compare{width:100%;min-width:760px;border-collapse:collapse;font-size:14px}
.compare th,.compare td{padding:16px 18px;border-bottom:1px solid #eee9e5;text-align:left}
.compare th{background:#fff4f6;color:#c34e71;font-weight:800}
.compare td:first-child{font-weight:700;color:var(--ink)}
.rating-panel{display:flex;align-items:center;justify-content:space-between;gap:25px;margin-bottom:22px;padding:22px 26px;border-radius:18px;background:linear-gradient(100deg,#fff0f3,#fff7df)}
.rating-score strong{font-size:44px;line-height:1;color:#d84f78}
.stars{color:#f2a51f;font-size:22px;letter-spacing:2px}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.price-card{padding:25px;background:#fff;border:1px solid var(--line);border-radius:20px}
.price-card.featured{border:2px solid var(--pink);transform:translateY(-8px);box-shadow:var(--shadow)}
.price-card h3{margin-bottom:8px}
.price-card .price{font-size:30px;font-weight:900;margin:14px 0}
.price-card p{font-size:14px;color:var(--muted)}
.price-card ul{padding-left:18px;font-size:14px;color:var(--muted)}
.network{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.network-panel{padding:28px;border-radius:20px;background:#fff;border:1px solid var(--line)}
.network-panel h3{margin-bottom:9px}
.network-panel p{font-size:14px;color:var(--muted)}
.comments{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.comment{padding:24px;background:#fff;border-radius:18px;border:1px solid var(--line);position:relative}
.comment:before{content:"“";position:absolute;right:18px;top:5px;color:#ffd6df;font-size:54px;font-family:Georgia,serif}
.comment p{font-size:14px;color:#55586b;margin-bottom:18px}
.comment strong{font-size:14px}
.comment span{display:block;color:#9694a2;font-size:12px}
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.case{overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:18px}
.case img{width:100%;aspect-ratio:16/9;object-fit:cover}
.case-body{padding:20px}
.case-body h3{font-size:18px;margin-bottom:7px}
.case-body p{font-size:14px;color:var(--muted);margin:0}
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.article{padding:23px;background:#fff;border-left:4px solid var(--blue);border-radius:14px;box-shadow:0 8px 25px rgba(45,38,58,.05)}
.article:nth-child(2){border-color:var(--pink)}
.article:nth-child(3){border-color:var(--mint)}
.article small{color:#9b9aa5}
.article h3{font-size:17px;margin:9px 0}
.article p{font-size:13px;color:var(--muted);margin:0}
.faq-list{display:grid;gap:10px;max-width:900px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;text-align:left;background:none;border:0;padding:18px 20px;color:var(--ink);font:inherit;font-weight:700;cursor:pointer}
.faq-question span:last-child{font-size:22px;color:var(--pink);transition:.25s}
.faq-answer{max-height:0;overflow:hidden;padding:0 20px;color:var(--muted);font-size:14px;transition:max-height .3s,padding .3s}
.faq-item.open .faq-answer{max-height:180px;padding:0 20px 18px}
.faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
.form-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:28px;align-items:start}
.contact-panel{padding:30px;border-radius:22px;background:linear-gradient(140deg,#24243b,#45436b);color:#fff}
.contact-panel h2{font-size:30px;line-height:1.25}
.contact-panel p{color:#ddddef;font-size:14px}
.contact-points{display:grid;gap:14px;margin-top:25px}
.contact-point{display:flex;gap:11px;align-items:start;font-size:14px}
.contact-point b{color:#ffb3c8}
.form-box{padding:28px;background:#fff;border:1px solid var(--line);border-radius:22px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.field{display:grid;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:700}
.field input,.field select,.field textarea{width:100%;padding:13px 14px;border:1px solid #e5e1df;border-radius:10px;background:#fffaf8;color:var(--ink);font:inherit;outline:none}
.field textarea{min-height:120px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--pink);box-shadow:0 0 0 3px rgba(255,110,145,.12)}
.form-submit{margin-top:18px}
.join-box{display:flex;justify-content:space-between;align-items:center;gap:25px;padding:30px;border-radius:22px;background:linear-gradient(100deg,#fff1e7,#f5f1ff);border:1px solid #f0e6e3}
.join-box h2{margin-bottom:7px}
.join-box p{margin:0;color:var(--muted);font-size:14px}
.footer{background:#25253b;color:#f8f7fa;padding:58px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px}
.footer h3{font-size:16px;margin-bottom:13px}
.footer p,.footer a{color:#c8c8d5;font-size:13px}
.footer a{display:block;margin:5px 0}
.footer a:hover{color:#ffb1c5}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:35px;padding-top:18px;color:#aaaabd;font-size:12px;display:flex;justify-content:space-between;gap:15px}
.qr-box{position:fixed;right:20px;bottom:82px;z-index:20;width:76px;padding:7px;background:#fff;border-radius:12px;box-shadow:0 8px 25px rgba(20,20,40,.16);text-align:center}
.qr-box img{width:100%;border-radius:7px}
.qr-box span{font-size:10px;color:#555;display:block;line-height:1.3;margin-top:4px}
.to-top{position:fixed;right:20px;bottom:20px;width:42px;height:42px;border:0;border-radius:50%;background:var(--pink);color:#fff;font-size:20px;cursor:pointer;box-shadow:0 8px 18px rgba(216,79,120,.25);opacity:0;pointer-events:none;transition:.25s}
.to-top.show{opacity:1;pointer-events:auto}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:none}
@media(max-width:1050px){
  .nav-links a{padding:8px 5px;font-size:12px}
  .hero-grid{gap:35px}
  .container{width:min(100% - 32px,1180px)}
}
@media(max-width:850px){
  .nav-links{display:none;position:absolute;top:76px;left:16px;right:16px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
  .nav-links.open{display:flex}
  .nav-links a{padding:10px 12px}
  .nav-cta{margin:8px 0 0}
  .menu-toggle{display:block}
  .hero{padding:66px 0 55px}
  .hero-grid,.intro-layout,.form-layout{grid-template-columns:1fr}
  .hero-visual{min-height:330px}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .process{grid-template-columns:1fr;gap:25px}
  .process:before{left:calc(50% - 1px);right:auto;top:28px;bottom:28px;width:2px;height:auto;background:linear-gradient(180deg,var(--pink),var(--orange),var(--mint),var(--blue))}
  .step{display:grid;grid-template-columns:60px 1fr;text-align:left;align-items:center;gap:16px}
  .step-number{margin:0}
  .step h3,.step p{grid-column:2}
  .step h3{margin-bottom:0}
  .step p{margin-top:-8px}
  .comments,.cases,.article-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .container{width:calc(100% - 28px)}
  .brand-name{font-size:16px}
  .hero{padding-top:48px}
  h1{font-size:40px}
  .hero-copy{font-size:16px}
  .hero-visual{min-height:280px}
  .visual-board{inset:15px 0 12px 6px;padding:18px}
  .board-title{font-size:18px}
  .board-flow{gap:8px}
  .flow-chip{padding:11px;font-size:12px}
  .section{padding:65px 0}
  .section-head{display:block}
  .section-head p{margin-top:14px}
  .metric-grid,.service-grid,.feature-list,.solution-grid,.price-grid,.network,.comments,.cases,.article-grid{grid-template-columns:1fr}
  .price-card.featured{transform:none}
  .media-strip{grid-template-columns:1fr}
  .media-stack{grid-template-columns:1fr 1fr}
  .rating-panel{display:block}
  .rating-score{margin-bottom:12px}
  .form-grid{grid-template-columns:1fr}
  .field.full{grid-column:auto}
  .join-box{display:block}
  .join-box .button{margin-top:20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:22px}
  .footer-bottom{display:block}
  .footer-bottom span{display:block;margin-top:7px}
  .qr-box{right:12px;bottom:72px;width:68px}
}
@media(prefers-reduced-motion:reduce){
  *,html{scroll-behavior:auto!important;transition:none!important;animation:none!important}
}