:root{
  --primary:#FF5C8A;
  --primary-deep:#F03D74;
  --primary-soft:#FFE4EE;
  --deep:#2A1A3D;
  --text:#3E2C50;
  --muted:#6F5E7C;
  --bg:#FFF9FB;
  --bg-soft:#FFF0F6;
  --card:#FFFFFF;
  --border:#F4D8E5;
  --green:#2EC57E;
  --radius:18px;
  --shadow:0 10px 30px rgba(240,61,116,.08);
  --shadow-hover:0 18px 42px rgba(240,61,116,.16);
  --nav-h:66px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 10px)}
body{
  font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
.container.narrow{max-width:860px}
.section{padding:88px 0}
.section.alt{background:var(--bg-soft)}
.sec-title{font-size:32px;font-weight:800;color:var(--deep);text-align:center;line-height:1.35}
.sec-title.light{color:#fff}
.sec-sub{text-align:center;color:var(--muted);margin:10px 0 44px}
.ver{color:var(--primary);font-size:.62em;font-weight:700;margin-left:8px}

.btn{
  display:inline-block;
  background:linear-gradient(90deg,var(--primary),var(--primary-deep));
  color:#fff;
  border-radius:999px;
  padding:12px 30px;
  font-size:15px;
  font-weight:600;
  border:0;
  cursor:pointer;
  transition:transform .25s,box-shadow .25s;
  box-shadow:var(--shadow);
}
.btn:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.btn-lg{padding:15px 38px;font-size:16px}

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:transform .25s,box-shadow .25s;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}

.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s,border-color .25s;
}
.nav.scrolled{box-shadow:0 6px 24px rgba(42,26,61,.08);border-color:var(--border)}
.nav-inner{
  max-width:1180px;margin:0 auto;padding:0 24px;
  height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.nav-logo{
  display:flex;align-items:center;gap:8px;
  font-size:21px;font-weight:800;color:var(--deep);white-space:nowrap;
  height:100%;padding:0 4px;
}
.nav-logo svg{color:var(--primary);flex:none}
.nav-menu{display:flex;align-items:center;gap:13px}
.nav-menu a{
  font-size:13.5px;color:var(--text);white-space:nowrap;
  padding:6px 4px;border-radius:8px;transition:color .2s;
}
.nav-menu a:hover{color:var(--primary)}
.nav-dl{
  flex:none;height:100%;
  display:inline-flex;align-items:center;justify-content:center;
}
.nav-dl span{
  background:linear-gradient(90deg,var(--primary),var(--primary-deep));
  color:#fff;font-size:13.5px;font-weight:600;
  border-radius:999px;padding:7px 15px;
  box-shadow:var(--shadow);
  transition:transform .25s,box-shadow .25s;
}
.nav-dl:hover span{transform:translateY(-2px);box-shadow:var(--shadow-hover)}

.hero{
  padding:calc(var(--nav-h) + 46px) 0 64px;
  background:linear-gradient(180deg,var(--primary-soft) 0%,var(--bg) 78%);
  overflow:hidden;
}
.hero-grid{
  display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;
}
.hero h1{font-size:42px;font-weight:800;color:var(--deep);line-height:1.3;margin-bottom:18px}
.hero-desc{font-size:17px;color:var(--text);max-width:520px;margin-bottom:30px}
.hero-cta{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px}
.hero-tags i{
  font-style:normal;font-size:13px;color:var(--primary-deep);
  background:var(--card);border:1px solid var(--border);
  border-radius:999px;padding:5px 12px;white-space:nowrap;
}
.personas{margin-top:44px}
.personas-title{font-size:17px;font-weight:700;color:var(--deep);margin-bottom:18px}
.persona-grid{
  display:grid;grid-template-columns:repeat(6,1fr);gap:18px;
}
.persona{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:12px 10px 10px;
  text-align:center;
  transition:transform .25s,box-shadow .25s;
}
.persona:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.persona img{
  width:100%;aspect-ratio:1;object-fit:cover;border-radius:14px;margin-bottom:10px;
}
.persona span{font-size:14px;font-weight:600;color:var(--deep);white-space:nowrap}

.chat{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:22px;
  box-shadow:var(--shadow-hover);
  overflow:hidden;
  width:100%;max-width:440px;margin-left:auto;
}
.chat-head{
  display:flex;align-items:center;gap:12px;
  padding:14px 16px;
  background:linear-gradient(90deg,var(--primary),var(--primary-deep));
}
.chat-head img{
  width:46px;height:46px;border-radius:50%;
  border:2px solid rgba(255,255,255,.75);
  object-fit:cover;flex:none;
}
.chat-head-txt{line-height:1.3;min-width:0}
.chat-name{color:#fff;font-size:15px;font-weight:700}
.chat-status{color:rgba(255,255,255,.92);font-size:13px;display:flex;align-items:center;gap:5px;white-space:nowrap}
.chat-status i{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px rgba(46,197,126,.28)}
.chat-body{
  height:312px;overflow-y:auto;padding:18px 16px;
  display:flex;flex-direction:column;gap:12px;
  background:var(--bg);
}
.msg{display:flex;align-items:flex-start;gap:8px;max-width:88%}
.msg-ai{align-self:flex-start}
.msg-user{align-self:flex-end;flex-direction:row-reverse}
.msg p{
  padding:11px 14px;border-radius:16px;font-size:14.5px;line-height:1.6;
  box-shadow:var(--shadow);
}
.msg-ai p{background:var(--card);border:1px solid var(--border);border-top-left-radius:5px;color:var(--text)}
.msg-user p{background:linear-gradient(90deg,var(--primary),var(--primary-deep));color:#fff;border-top-right-radius:5px}
.msg-ava{width:30px;height:30px;border-radius:50%;overflow:hidden;flex:none}
.msg-ava img{width:100%;height:100%;object-fit:cover}
.chat-input{
  display:flex;gap:10px;padding:12px 14px;
  background:var(--card);border-top:1px solid var(--border);
}
.chat-input input{
  flex:1;min-width:0;
  border:1px solid var(--border);border-radius:999px;
  background:var(--bg-soft);
  padding:10px 16px;font-size:16px;color:var(--text);
  outline:none;
}
.chat-input button{
  flex:none;
  border:0;border-radius:999px;cursor:pointer;
  background:linear-gradient(90deg,var(--primary),var(--primary-deep));
  color:#fff;font-size:14px;font-weight:600;
  padding:0 22px;min-width:56px;min-height:48px;
  transition:transform .2s,box-shadow .2s;
}
.chat-input button:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.chat-input button.disabled{background:#E7E0EC;color:#A99FAF;cursor:default;box-shadow:none}
.chat-input button.disabled:hover{transform:none;box-shadow:none}

.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{padding:34px 28px}
.step-icon{
  width:56px;height:56px;border-radius:16px;
  background:var(--primary-soft);color:var(--primary-deep);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.step h3{font-size:18px;font-weight:700;color:var(--deep);margin-bottom:10px}
.step p{font-size:14.5px;color:var(--muted)}

.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;min-width:0}
.split-txt .sec-title{text-align:left;margin-bottom:16px}
.lead{font-size:16.5px;color:var(--text);margin-bottom:24px}
.check-list{display:flex;flex-direction:column;gap:14px;margin-bottom:30px}
.check-list li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:15px;color:var(--text);
}
.check-list li svg{color:var(--green);flex:none;margin-top:4px}
.split-img{min-width:0}
.split-img img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow-hover)}

.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feat{padding:30px 24px}
.feat-icon{
  width:52px;height:52px;border-radius:15px;
  background:var(--primary-soft);color:var(--primary-deep);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.feat h3{font-size:17.5px;font-weight:700;color:var(--deep);margin-bottom:10px}
.feat .pain{font-size:13.5px;color:var(--primary-deep);background:var(--primary-soft);border-radius:8px;padding:5px 10px;margin-bottom:12px;display:inline-block;line-height:1.5}
.feat p:last-child{font-size:14px;color:var(--muted)}

.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--radius);box-shadow:var(--shadow)}
.cmp{
  width:100%;table-layout:fixed;border-collapse:collapse;
  background:var(--card);
  font-size:14.5px;
}
.cmp th,.cmp td{padding:15px 14px;text-align:center;border-bottom:1px solid var(--border);white-space:nowrap}
.cmp thead th{background:var(--deep);color:#fff;font-weight:600;font-size:15px}
.cmp thead th:first-child{border-radius:var(--radius) 0 0 0}
.cmp thead th:last-child{border-radius:0 var(--radius) 0 0}
.cmp tbody th{
  background:var(--bg-soft);color:var(--deep);font-weight:600;text-align:left;
}
.cmp tbody tr:last-child th{border-radius:0 0 0 var(--radius)}
.cmp td.best{color:var(--primary-deep);font-weight:600;background:var(--primary-soft)}
.scroll-hint{display:none;text-align:center;color:var(--muted);font-size:13px;margin-top:12px}

.scene-list{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:center;
  margin-bottom:44px;
}
.scene-list li{
  display:flex;align-items:center;gap:8px;
  background:var(--card);border:1px solid var(--border);
  border-radius:999px;padding:9px 20px;
  font-size:14.5px;font-weight:500;color:var(--deep);
  box-shadow:var(--shadow);
  transition:transform .25s,box-shadow .25s;
}
.scene-list li:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.scene-list li svg{color:var(--green)}
.vs-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.vs{padding:32px 30px}
.vs h3{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--deep);margin-bottom:18px}
.vs-x,.vs-heart{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex:none}
.vs-x{background:#F1E9F4;color:#9A8BA8}
.vs-heart{background:var(--primary-soft);color:var(--primary-deep)}
.vs ul{display:flex;flex-direction:column;gap:12px}
.vs li{font-size:14.5px;color:var(--text);padding-left:22px;position:relative}
.vs li::before{content:"";position:absolute;left:2px;top:10px;width:8px;height:8px;border-radius:50%;background:var(--border)}
.vs-good{border-color:var(--primary);background:linear-gradient(180deg,#fff,var(--bg-soft))}
.vs-good li::before{background:var(--primary)}

.stats{
  background:var(--deep);
  padding:80px 0;
}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat{text-align:center;padding:10px}
.stat strong{
  display:block;font-size:44px;font-weight:800;
  background:linear-gradient(90deg,#FF9DBB,var(--primary));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  line-height:1.2;
}
.stat span{color:rgba(255,255,255,.75);font-size:15px}

.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rev{padding:26px 24px}
.rev-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.rev-ava{
  width:48px;height:48px;border-radius:50%;flex:none;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#fff;font-size:19px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.rev-name{font-size:15px;font-weight:700;color:var(--deep)}
.stars{color:#FFB44D;font-size:13.5px;letter-spacing:2px}
.rev>p{font-size:14.5px;color:var(--text)}

.pri-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.pri{padding:30px 24px}
.pri-icon{
  width:52px;height:52px;border-radius:15px;
  background:var(--primary-soft);color:var(--primary-deep);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.pri h3{font-size:17px;font-weight:700;color:var(--deep);margin-bottom:10px}
.pri p{font-size:14px;color:var(--muted)}

.update-card{display:grid;grid-template-columns:300px 1fr;gap:34px;padding:38px 36px;max-width:940px;margin:0 auto}
.update-ver{background:var(--deep);border-radius:var(--radius);padding:30px 26px;text-align:center;display:flex;flex-direction:column;justify-content:center}
.ver-tag{
  align-self:center;background:var(--primary);color:#fff;
  font-size:13px;font-weight:600;border-radius:999px;padding:4px 14px;margin-bottom:14px;
}
.update-ver strong{color:#fff;font-size:30px;font-weight:800}
.update-ver p{color:rgba(255,255,255,.72);font-size:13.5px;margin-top:6px}
.update-log{display:flex;flex-direction:column;gap:13px;justify-content:center}
.update-log li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14.5px;color:var(--text);
}
.update-log li span{
  flex:none;min-width:34px;text-align:center;
  background:var(--primary-soft);color:var(--primary-deep);
  font-size:12px;font-weight:600;border-radius:6px;padding:2px 8px;margin-top:2px;
}

.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);box-shadow:var(--shadow);
  overflow:hidden;transition:box-shadow .25s;
}
.faq-item:hover{box-shadow:var(--shadow-hover)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
  background:none;border:0;cursor:pointer;
  padding:18px 22px;min-height:44px;
  font-size:16px;font-weight:600;color:var(--deep);text-align:left;
}
.faq-q i{
  flex:none;display:flex;align-items:center;justify-content:center;
  width:26px;height:26px;border-radius:50%;
  background:var(--primary-soft);color:var(--primary-deep);
  transition:transform .3s;
}
.faq-item.active .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 20px;font-size:14.5px;color:var(--muted)}

.dl{padding-top:14px}
.dl .sec-title{margin-bottom:14px}
.dl-meta{text-align:center;color:var(--muted);font-size:14px;margin-bottom:30px;white-space:nowrap}
.dl-btns{display:flex;justify-content:center;gap:20px;flex-wrap:wrap}
.dl-note{text-align:center;color:var(--muted);font-size:14.5px;margin-top:22px}

.footer{background:var(--deep);padding:30px 0;text-align:center}
.footer p{color:rgba(255,255,255,.72);font-size:14px}
.footer a{color:#fff;font-weight:700}

.top{
  position:fixed;right:24px;bottom:32px;z-index:99;
  width:48px;height:48px;border-radius:50%;border:0;cursor:pointer;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-hover);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .3s,visibility .3s,transform .25s;
}
.top.show{opacity:1;visibility:visible;pointer-events:auto}
.top:hover{transform:translateY(-3px)}

@media (max-width:1100px){
  .container{padding:0 20px}
  .nav-inner{padding:0 20px;gap:12px}
  .nav-menu{gap:10px}
  .nav-menu a{font-size:13px;padding:5px 3px}
  .hero h1{font-size:36px}
  .persona-grid{grid-template-columns:repeat(3,1fr)}
  .feat-grid,.pri-grid{grid-template-columns:repeat(2,1fr)}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:36px 24px}
  .rev-grid{grid-template-columns:repeat(2,1fr)}
  .sec-title{font-size:29px}
}
@media (max-width:900px){
  .nav-menu{display:none}
  .hero{padding-top:calc(var(--nav-h) + 36px)}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .chat{margin:0 auto}
  .split{grid-template-columns:1fr;gap:36px}
  .split-img{order:-1;max-width:560px;margin:0 auto;width:100%}
  .vs-grid{grid-template-columns:1fr}
  .update-card{grid-template-columns:1fr;max-width:640px}
}
@media (max-width:768px){
  .section{padding:64px 0}
  .split-img{max-width:100%}
  .sec-sub{margin-bottom:32px}
  .hero-cta{gap:14px}
  .hero-cta .btn,
  .split-txt .btn{width:100%;text-align:center}
  .step-grid{grid-template-columns:1fr}
  .table-wrap{box-shadow:none}
  .cmp{min-width:640px}
  .scroll-hint{display:block}
  .dl-btns{flex-direction:column;align-items:stretch;gap:14px}
  .dl-btns .btn{text-align:center;padding:15px 20px}
  .dl-meta{font-size:12px;overflow:hidden;text-overflow:ellipsis}
  .personas-title{margin-bottom:14px}
}
@media (max-width:640px){
  .hero h1{font-size:30px}
  .hero-desc{font-size:15.5px}
  .sec-title{font-size:25px}
  .chat-body{height:250px}
  .feat-grid,.pri-grid,.rev-grid{grid-template-columns:1fr}
  .stat strong{font-size:34px}
  .step{padding:28px 22px}
  .feat,.pri,.rev{padding:24px 20px}
  .update-card{padding:26px 20px;gap:26px}
}