: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);
  --maxw:1200px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{display:block;max-width:100%}
button{font-family:inherit;border:none;background:none;cursor:pointer}
input{font-family:inherit}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

.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)}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(90deg,var(--primary),var(--primary-deep));
  color:#fff;
  border-radius:999px;
  font-weight:600;
  white-space:nowrap;
  padding:12px 26px;
  font-size:15px;
  box-shadow:var(--shadow);
  transition:transform .25s,box-shadow .25s;
}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-lg{padding:16px 38px;font-size:17px}
.btn-outline{
  background:var(--card);
  color:var(--primary-deep);
  border:2px solid var(--primary);
}
.btn-outline:hover{background:var(--primary-soft);box-shadow:var(--shadow-hover)}

.nav{
  position:fixed;
  top:0;left:0;right:0;
  z-index:100;
  background:rgba(255,249,251,.94);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s,box-shadow .25s;
}
.nav.scrolled{border-bottom-color:var(--border);box-shadow:0 6px 20px rgba(42,26,61,.06)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.logo{display:inline-flex;align-items:center;gap:8px;color:var(--deep);font-size:20px;font-weight:800;flex-shrink:0;min-height:44px}
.logo svg{color:var(--primary)}
.nav-links{display:flex;align-items:center;gap:16px}
.nav-link{font-size:14px;color:var(--text);transition:color .2s;white-space:nowrap}
.nav-link:hover{color:var(--primary)}
.btn-nav{padding:9px 18px;font-size:13px;flex-shrink:0;min-height:44px}

.hero{
  padding:150px 0 70px;
  background:linear-gradient(180deg,var(--bg) 0%,var(--bg-soft) 100%);
  overflow:hidden;
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero-text h1{
  font-size:46px;
  line-height:1.25;
  color:var(--deep);
  font-weight:800;
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:14px;
}
.ver-badge{
  font-size:14px;
  font-weight:700;
  color:var(--primary-deep);
  background:var(--primary-soft);
  border:1px solid var(--border);
  padding:4px 12px;
  border-radius:999px;
  white-space:nowrap;
}
.hero-desc{margin:22px 0 32px;font-size:17px;color:var(--muted);line-height:1.9;max-width:540px}

.chat-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:22px;
  box-shadow:var(--shadow-hover);
  overflow:hidden;
  width:min(430px,100%);
  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-avatar{
  width:46px;height:46px;
  border-radius:50%;
  border:2px solid rgba(255,255,255,.65);
  object-fit:cover;
  flex-shrink:0;
}
.chat-user{text-align:left;color:#fff}
.chat-name{font-size:16px;font-weight:700}
.chat-status{font-size:12px;opacity:.95;display:inline-flex;align-items:center;gap:5px;margin-top:2px}
.dot{width:8px;height:8px;border-radius:50%;background:#7DF5B8;box-shadow:0 0 0 3px rgba(125,245,184,.35);flex-shrink:0}
.chat-body{
  height:330px;
  padding:16px;
  overflow-y:auto;
  background:var(--card);
  display:flex;
  flex-direction:column;
  gap:12px;
}
.msg{max-width:78%;padding:10px 14px;font-size:14px;line-height:1.65;border-radius:16px}
.msg.ai{
  align-self:flex-start;
  background:var(--bg-soft);
  color:var(--text);
  border:1px solid var(--border);
  border-bottom-left-radius:4px;
}
.msg.user{
  align-self:flex-end;
  background:linear-gradient(90deg,var(--primary),var(--primary-deep));
  color:#fff;
  border-bottom-right-radius:4px;
}
.chat-input{
  display:flex;
  align-items:center;
  gap:10px;
  padding:12px 14px;
  background:var(--card);
  border-top:1px solid var(--border);
}
#chatInput{
  flex:1;
  min-width:0;
  padding:11px 16px;
  border:1px solid var(--border);
  border-radius:999px;
  background:var(--bg);
  font-size:16px;
  color:var(--text);
  outline:none;
}
#chatInput.done{background:#F1EAF2;color:var(--muted)}
.btn-send{
  width:44px;height:44px;
  border-radius:50%;
  background:linear-gradient(90deg,var(--primary),var(--primary-deep));
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow);
  transition:transform .2s,box-shadow .2s;
  flex-shrink:0;
}
.btn-send:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-send.disabled{background:#E2D9E4;color:#A998AC;box-shadow:none;cursor:not-allowed}
.btn-send.disabled:hover{transform:none}

.personas{margin-top:64px}
.personas-title{font-size:20px;font-weight:700;color:var(--deep);text-align:center;margin-bottom:24px}
.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);
  overflow:hidden;
  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}
.persona figcaption{padding:10px 6px 12px;font-size:14px;font-weight:600;color:var(--deep);background:var(--card)}

.section{padding:84px 0}
.section-alt{background:var(--bg-soft)}
.sec-head{text-align:center;max-width:640px;margin:0 auto 46px}
.sec-head h2{font-size:32px;color:var(--deep);font-weight:800;line-height:1.35}
.sec-head p{margin-top:12px;color:var(--muted);font-size:16px}

.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{padding:34px 28px;position:relative}
.step-num{
  font-size:40px;
  font-weight:800;
  background:linear-gradient(90deg,var(--primary),var(--primary-deep));
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  line-height:1;
  margin-bottom:18px;
}
.step h3{font-size:19px;color:var(--deep);margin-bottom:10px}
.step p{color:var(--muted);font-size:15px}

.about-grid,.custom-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.about-img,.custom-img{
  width:100%;
  border-radius:var(--radius);
  border:1px solid var(--border);
  box-shadow:var(--shadow);
}
.about-text h2,.custom-text h2{font-size:30px;color:var(--deep);font-weight:800;line-height:1.4;margin-bottom:18px}
.about-text p,.custom-text p{color:var(--muted);line-height:1.9;margin-bottom:20px}
.check-list{display:flex;flex-direction:column;gap:14px}
.check-list li{display:flex;align-items:center;gap:10px;font-size:16px;color:var(--text);font-weight:500}
.check-ic{
  width:22px;height:22px;
  border-radius:50%;
  background:linear-gradient(90deg,var(--primary),var(--primary-deep));
  color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  flex-shrink:0;
}

.feat-grid,.pri-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feat,.pri{padding:30px 26px}
.feat-ic{
  width:52px;height:52px;
  border-radius:16px;
  background:var(--primary-soft);
  color:var(--primary-deep);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:18px;
}
.feat h3,.pri h3{font-size:18px;color:var(--deep);margin-bottom:10px}
.feat .pain{font-size:14px;color:var(--primary-deep);background:var(--primary-soft);display:inline-block;padding:3px 10px;border-radius:999px;margin-bottom:12px}
.feat p,.pri p{color:var(--muted);font-size:14.5px}

.table-wrap{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
}
.cmp-table{
  width:100%;
  min-width:640px;
  border-collapse:collapse;
  table-layout:fixed;
}
.cmp-table th,.cmp-table td{
  padding:16px 18px;
  text-align:left;
  font-size:14.5px;
  white-space:nowrap;
  border-bottom:1px solid var(--border);
}
.cmp-table thead th{
  font-size:15px;
  color:var(--deep);
  background:var(--bg-soft);
  font-weight:700;
}
.cmp-table tbody tr:last-child td{border-bottom:none}
.cmp-table tbody td:first-child{font-weight:600;color:var(--deep)}
.cmp-table tbody td{color:var(--muted)}
.cmp-table .col-hot{
  background:var(--primary-soft);
  color:var(--primary-deep);
  font-weight:600;
}
.cmp-table thead .col-hot{background:linear-gradient(90deg,var(--primary),var(--primary-deep));color:#fff}
.slide-hint{display:none;text-align:center;color:var(--muted);font-size:13px;margin-top:12px}

.scene-list{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:14px;
  margin-bottom:52px;
}
.scene-list li{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--primary-soft);
  border:1px solid var(--border);
  color:var(--deep);
  font-size:15px;
  font-weight:600;
  padding:9px 18px;
  border-radius:999px;
}
.vs-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.vs{padding:32px 30px}
.vs h3{font-size:19px;margin-bottom:18px}
.vs ul{display:flex;flex-direction:column;gap:12px}
.vs li{font-size:15px;color:var(--muted);padding-left:26px;position:relative}
.vs li::before{
  content:"";
  position:absolute;
  left:0;top:5px;
  width:16px;height:16px;
  border-radius:50%;
  background-size:10px;
  background-position:center;
  background-repeat:no-repeat;
}
.vs-bad h3{color:var(--muted)}
.vs-bad li::before{
  background-color:#EDE4EA;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M18 6L6 18M6 6l12 12' fill='none' stroke='%23A998AC' stroke-width='3' stroke-linecap='round'/%3E%3C/svg%3E");
}
.vs-good{
  border-color:var(--primary);
  background:linear-gradient(180deg,var(--card),var(--primary-soft));
}
.vs-good h3{color:var(--primary-deep)}
.vs-good li::before{
  background-color:var(--green);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M20 6L9 17l-5-5' fill='none' stroke='%23fff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}

.section.dark{background:var(--deep);color:#fff}
.section.dark .sec-head h2{color:#fff}
.section.dark .sec-head p{color:#B9A8C6}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.data-num{
  font-size:46px;
  font-weight:800;
  line-height:1.15;
  background:linear-gradient(90deg,#FF8FB2,#FF5C8A);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}
.data-label{margin-top:10px;color:#CBBBD9;font-size:15px}

.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.tag-list li{
  background:var(--primary-soft);
  border:1px solid var(--border);
  color:var(--primary-deep);
  font-size:14px;
  font-weight:600;
  padding:7px 16px;
  border-radius:999px;
}

.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rev{padding:26px 24px}
.rev-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.rev-ava{
  width:48px;height:48px;
  border-radius:50%;
  color:#fff;
  font-size:20px;
  font-weight:700;
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.rev-name{font-size:16px;font-weight:700;color:var(--deep)}
.rev-stars{font-size:14px;color:#FFB03A;letter-spacing:2px}
.rev p{color:var(--muted);font-size:14.5px;line-height:1.8}

.update-card{padding:36px 34px;max-width:720px;margin:0 auto}
.update-head{
  display:flex;
  align-items:baseline;
  gap:18px;
  border-bottom:1px solid var(--border);
  padding-bottom:20px;
  margin-bottom:22px;
}
.update-ver{
  font-size:28px;
  font-weight:800;
  color:var(--primary-deep);
}
.update-date{color:var(--muted);font-size:14px}
.update-list{display:flex;flex-direction:column;gap:14px}
.update-list li{
  position:relative;
  padding-left:20px;
  color:var(--text);
  font-size:15px;
  line-height:1.8;
}
.update-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:8px;height:8px;
  border-radius:50%;
  background:linear-gradient(90deg,var(--primary),var(--primary-deep));
}

.faq-list{max-width:720px;margin:0 auto}
.faq-item{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  margin-bottom:14px;
  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;
  padding:20px 24px;
  font-size:16px;
  font-weight:600;
  color:var(--deep);
  text-align:left;
  transition:color .2s;
}
.faq-q svg{color:var(--primary);flex-shrink:0;transition:transform .3s}
.faq-item.open .faq-q svg{transform:rotate(180deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a-inner{
  padding:0 24px 20px;
  color:var(--muted);
  font-size:15px;
  line-height:1.85;
}

.dl-wrap{text-align:center;padding:20px 0}
.dl-wrap h1{
  font-size:40px;
  color:var(--deep);
  font-weight:800;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:16px;
}
.dl-meta{color:var(--muted);font-size:14px;margin-bottom:30px}
.dl-btns{display:flex;justify-content:center;gap:18px;flex-wrap:wrap}
.dl-tip{margin-top:24px;color:var(--muted);font-size:14px}

.footer{background:var(--deep);color:#CBBBD9;text-align:center;padding:30px 0;font-size:14px}
.footer-link{color:#fff;font-weight:600}
.footer-link:hover{color:var(--primary-soft)}

.to-top{
  position:fixed;
  right:24px;bottom:24px;
  width:48px;height:48px;
  border-radius:50%;
  background:linear-gradient(90deg,var(--primary),var(--primary-deep));
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-hover);
  opacity:0;
  visibility:hidden;
  transform:translateY(12px);
  transition:opacity .3s,transform .3s,visibility .3s;
  z-index:90;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}

@media (max-width:1100px){
  .hero-text h1{font-size:38px}
  .hero-desc{font-size:16px}
  .hero-grid{gap:36px}
  .persona-grid{grid-template-columns:repeat(3,1fr)}
  .feat-grid,.pri-grid{grid-template-columns:repeat(2,1fr)}
  .data-grid{grid-template-columns:repeat(2,1fr)}
  .rev-grid{grid-template-columns:repeat(2,1fr)}
  .data-num{font-size:40px}
}

@media (max-width:900px){
  .nav-links{display:none}
  .hero{padding:120px 0 60px}
  .hero-grid{grid-template-columns:1fr}
  .chat-card{margin:0 auto}
  .about-grid,.custom-grid{grid-template-columns:1fr;gap:36px}
  .vs-grid{grid-template-columns:1fr}
  .section{padding:64px 0}
  .sec-head h2{font-size:28px}
}

@media (max-width:768px){
  .container{padding:0 20px}
  .table-wrap{min-width:0}
  .cmp-table{min-width:640px}
  .slide-hint{display:block}
  .hero-text .btn,.custom-text .btn{width:100%}
  .dl-btns{flex-direction:column;align-items:stretch}
  .dl-btns .btn{width:100%}
  .dl-meta{font-size:12px;letter-spacing:.2px}
  .dl-tip{font-size:13px}
  .btn-lg{padding:16px 24px}
  .hero-text h1{font-size:34px}
  .dl-wrap h1{font-size:34px}
  .chat-card{width:100%}
  .to-top{right:20px;bottom:20px}
}

@media (max-width:640px){
  .section{padding:56px 0}
  .sec-head{margin-bottom:34px}
  .sec-head h2{font-size:25px}
  .hero{padding:106px 0 48px}
  .hero-text h1{font-size:29px}
  .hero-desc{font-size:15px}
  .chat-body{height:250px}
  .feat-grid,.pri-grid,.rev-grid{grid-template-columns:1fr}
  .step-grid{grid-template-columns:1fr}
  .data-num{font-size:34px}
  .data-label{font-size:14px}
  .dl-wrap h1{font-size:29px}
  .persona-grid{gap:12px}
  .persona figcaption{font-size:12px;padding:8px 4px 10px}
  .scene-list li{font-size:14px;padding:8px 14px}
  .nav-inner{height:58px}
  html{scroll-padding-top:70px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .card,.persona,.btn,.btn-send,.faq-a{transition:none}
}