: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);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:70px}
body{font-family:-apple-system,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;color:var(--text);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;padding-top:64px;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit}
ul{list-style:none}
.container{max-width:1200px;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:none;border-radius:999px;font-weight:600;font-size:15px;cursor:pointer;text-decoration:none;transition:transform .25s,box-shadow .25s;white-space:nowrap}
.btn:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(240,61,116,.35)}
.btn-lg{padding:14px 38px;font-size:17px}
.sec-title{font-size:34px;font-weight:800;color:var(--deep);text-align:center;line-height:1.35}
.sec-sub{text-align:center;color:var(--muted);margin-top:10px;font-size:15px}

.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);transition:box-shadow .25s}
.nav.scrolled{box-shadow:0 6px 24px rgba(42,26,61,.08)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:inline-flex;align-items:center;gap:8px;font-size:20px;font-weight:800;color:var(--deep);text-decoration:none}
.menu{display:flex;gap:34px}
.menu a{font-size:15px;color:var(--text);text-decoration:none;font-weight:500;transition:color .2s}
.menu a:hover{color:var(--primary)}
.btn-nav{padding:8px 20px;font-size:14px;font-weight:700}

.hero{background:linear-gradient(180deg,var(--bg-soft) 0%,var(--bg) 100%);padding:72px 0 60px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:start}
.hero h1{font-size:44px;font-weight:800;color:var(--deep);line-height:1.3}
.ver{display:inline-block;vertical-align:middle;margin-left:10px;padding:5px 14px;font-size:14px;font-weight:700;color:var(--primary-deep);background:var(--primary-soft);border-radius:999px}
.hero-desc{margin:18px 0 28px;font-size:16px;color:var(--muted);max-width:560px}
.hero-chat{border-radius:22px;overflow:hidden;max-width:560px}
.chat-head{display:flex;align-items:center;gap:12px;padding:14px 16px;background:linear-gradient(90deg,var(--primary),var(--primary-deep))}
.chat-avatar{width:52px;height:52px;border-radius:50%;object-fit:cover;border:2px solid rgba(255,255,255,.85)}
.chat-id strong{display:block;color:#fff;font-size:16px}
.chat-online{display:inline-flex;align-items:center;gap:5px;color:rgba(255,255,255,.92);font-size:12px}
.dot{width:7px;height:7px;border-radius:50%;background:#7CFFB8;box-shadow:0 0 0 3px rgba(124,255,184,.25)}
.chat-body{min-height:250px;max-height:300px;overflow-y:auto;padding:16px;background:var(--bg-soft)}
.msg{display:flex;margin:0 0 14px}
.msg.ai{justify-content:flex-start}
.msg.user{justify-content:flex-end}
.bubble{max-width:80%;padding:10px 14px;font-size:14px;line-height:1.6;border-radius:16px;animation:bubbleIn .3s ease}
@keyframes bubbleIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.msg.ai .bubble{background:#fff;border:1px solid var(--border);color:var(--text);border-bottom-left-radius:4px}
.msg.user .bubble{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:#fff;border-top:1px solid var(--border)}
.chat-input input{flex:1;height:44px;padding:0 16px;border:1px solid var(--border);border-radius:999px;background:var(--bg-soft);font-size:14px;color:var(--text);outline:none}
.chat-input .send{height:44px;min-width:74px;padding:0 20px;border:none;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--primary-deep));color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:transform .25s}
.chat-input .send:hover{transform:translateY(-2px)}
.chat-input.done input{color:var(--muted)}
.chat-input.done .send{background:#D9CBDD;cursor:not-allowed;transform:none}

.personas{margin-top:32px}
.p-title{font-size:20px;font-weight:700;color:var(--deep);margin-bottom:14px}
.persona-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;max-width:560px}
.persona{display:flex;flex-direction:column;align-items:center;gap:8px;padding:12px 8px;background:var(--card);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);text-decoration:none;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:12px}
.persona span{font-size:13px;font-weight:600;color:var(--deep);white-space:nowrap}
.hero-cta{margin-top:32px}
.hero-right{position:relative}
.hero-art{width:100%;border-radius:24px;box-shadow:var(--shadow-hover)}
.hero-float{position:absolute;background:#fff;border:1px solid var(--border);border-radius:999px;padding:9px 18px;font-size:13px;font-weight:600;color:var(--primary-deep);box-shadow:var(--shadow)}
.hero-float.f1{top:26px;left:-18px}
.hero-float.f2{bottom:34px;right:-14px}

.steps{padding:76px 0}
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px}
.step{padding:34px 28px}
.step-num{font-size:15px;font-weight:800;color:var(--primary-deep);background:var(--primary-soft);border-radius:999px;padding:4px 14px}
.step h3{font-size:20px;font-weight:700;color:var(--deep);margin:16px 0 10px}
.step p{font-size:14px;color:var(--muted)}

.intro{padding:20px 0 76px}
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.intro-art,.custom-art{padding:14px;overflow:hidden}
.art-img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:14px}
.intro-content .sec-title{text-align:left}
.intro-txt{margin:16px 0 22px;font-size:15px;color:var(--muted)}
.check-list{display:flex;flex-direction:column;gap:12px}
.check-list li{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:600;color:var(--deep)}
.check-list svg{flex:none}

.features{padding:76px 0;background:var(--bg-soft)}
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:40px}
.feat{padding:30px 24px}
.feat-icon{width:56px;height:56px;border-radius:16px;background:var(--primary-soft);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.feat h3{font-size:19px;font-weight:700;color:var(--deep);margin-bottom:8px}
.pain{font-size:13px;color:var(--primary-deep);background:var(--primary-soft);border-radius:999px;padding:4px 12px;display:inline-block;margin-bottom:12px;line-height:1.5}
.feat-txt{font-size:14px;color:var(--muted)}

.compare{padding:76px 0}
.tbl-wrap{overflow-x:auto;margin-top:36px;-webkit-overflow-scrolling:touch}
.cmp-table{width:100%;min-width:0;border-collapse:separate;border-spacing:0;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:var(--card)}
.cmp-table th,.cmp-table td{padding:15px 16px;text-align:center;font-size:14px;white-space:nowrap;border-bottom:1px solid var(--border)}
.cmp-table thead th{background:var(--deep);color:#fff;font-weight:700}
.cmp-table tbody tr:last-child td{border-bottom:none}
.cmp-table td:first-child{font-weight:600;color:var(--deep);background:var(--bg-soft)}
.cmp-table td.col-me{background:var(--primary-soft);color:var(--primary-deep);font-weight:700}
.cmp-table thead th.col-me{background:var(--primary-deep)}
.tbl-hint{display:none}

.scenes{padding:76px 0;background:var(--bg-soft)}
.scene-list{display:grid;grid-template-columns:1fr 1fr;gap:14px 34px;margin:38px auto 44px;max-width:980px}
.scene-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--text);background:var(--card);border:1px solid var(--border);border-radius:14px;padding:14px 16px;box-shadow:var(--shadow)}
.scene-list svg{flex:none;margin-top:3px}
.vs-grid{display:grid;grid-template-columns:1fr auto 1fr;gap:22px;align-items:center;max-width:980px;margin:0 auto}
.vs-card{padding:30px 28px}
.vs-card h3{font-size:19px;font-weight:700;color:var(--deep);margin-bottom:16px;text-align:center}
.vs-card li{font-size:14px;color:var(--muted);padding:7px 0;border-bottom:1px dashed var(--border);text-align:center}
.vs-card li:last-child{border-bottom:none}
.vs-good{background:linear-gradient(160deg,var(--primary-soft),#fff)}
.vs-good h3{color:var(--primary-deep)}
.vs-good li{color:var(--text);font-weight:500}
.vs-badge{width:58px;height:58px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#fff;font-weight:800;font-size:17px;display:flex;align-items:center;justify-content:center;box-shadow:0 12px 28px rgba(240,61,116,.35);justify-self:center}

.stats{padding:64px 0;background:linear-gradient(135deg,#2A1A3D 0%,#46265E 100%)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.stat{text-align:center}
.num{font-size:46px;font-weight:800;color:#fff;line-height:1.2}
.stat-label{display:block;margin-top:8px;color:rgba(255,255,255,.72);font-size:14px}

.custom{padding:76px 0}
.custom-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.custom-content .sec-title{text-align:left}
.custom-content p{margin:16px 0 26px;font-size:15px;color:var(--muted)}

.reviews{padding:76px 0;background:var(--bg-soft)}
.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:40px}
.rev{padding:26px 24px}
.rev-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.rev-avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#fff;font-size:18px;font-weight:700;display:flex;align-items:center;justify-content:center;flex:none}
.rev-name{font-size:15px;font-weight:700;color:var(--deep)}
.stars{color:#FFB400;font-size:14px;letter-spacing:2px}
.rev-txt{font-size:14px;color:var(--muted)}

.privacy{padding:76px 0}
.priv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:40px}
.priv{padding:30px 24px;text-align:center}
.priv-icon{width:56px;height:56px;border-radius:50%;background:var(--primary-soft);display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
.priv h3{font-size:18px;font-weight:700;color:var(--deep);margin-bottom:10px}
.priv p{font-size:13.5px;color:var(--muted)}

.updates{padding:40px 0 76px}
.update-card{padding:40px 44px}
.update-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:26px}
.update-head .sec-title{text-align:left}
.update-ver{margin-top:8px;font-size:15px;font-weight:600;color:var(--primary-deep)}
.update-date{font-size:14px;color:var(--muted);background:var(--bg-soft);border:1px solid var(--border);border-radius:999px;padding:7px 16px;white-space:nowrap}
.update-list li{display:flex;align-items:flex-start;gap:12px;padding:13px 0;border-bottom:1px dashed var(--border);font-size:15px;color:var(--text)}
.update-list li:last-child{border-bottom:none}
.tag{flex:none;font-size:12px;font-weight:700;color:var(--primary-deep);background:var(--primary-soft);border-radius:999px;padding:3px 12px;margin-top:2px}

.faq{padding:20px 0 76px}
.faq-wrap{max-width:820px}
.faq-wrap .sec-title{margin-bottom:34px}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:16px;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:16px;padding:18px 22px;background:none;border:none;font-size:16px;font-weight:600;color:var(--deep);cursor:pointer;text-align:left}
.faq-arrow{width:10px;height:10px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg);transition:transform .3s;flex:none}
.faq-item.open .faq-arrow{transform:rotate(-135deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 22px 20px}
.faq-a-inner p{font-size:14.5px;color:var(--muted)}

.download{padding:20px 0 76px}
.download-box{padding:56px 40px;text-align:center;background:linear-gradient(170deg,#fff 0%,var(--bg-soft) 100%)}
.dl-title{font-size:38px;font-weight:800;color:var(--deep)}
.dl-meta{margin:16px 0 30px;font-size:14px;color:var(--muted)}
.dl-btns{display:flex;justify-content:center;gap:18px;flex-wrap:wrap}
.btn-dl{padding:15px 34px;font-size:16px}
.dl-tip{margin-top:26px;font-size:14px;color:var(--primary-deep);font-weight:600}

.footer{padding:30px 0;background:var(--deep);text-align:center}
.footer p{color:rgba(255,255,255,.7);font-size:13.5px}
.footer a{color:#fff;text-decoration:none;font-weight:600}

.backtop{position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:50%;border:none;background:linear-gradient(135deg,var(--primary),var(--primary-deep));display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 12px 26px rgba(240,61,116,.4);opacity:0;pointer-events:none;transition:opacity .3s,transform .3s;z-index:90}
.backtop.show{opacity:1;pointer-events:auto}
.backtop:hover{transform:translateY(-4px)}

@media (max-width:1100px){
  .sec-title{font-size:28px}
  .hero h1{font-size:36px}
  .persona-grid{grid-template-columns:repeat(3,1fr)}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .priv-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .rev-grid{grid-template-columns:repeat(2,1fr)}
  .num{font-size:38px}
}

@media (max-width:900px){
  .menu{display:none}
  .hero{padding:48px 0 44px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-right{max-width:520px;margin:0 auto;width:100%}
  .intro-grid{grid-template-columns:1fr;gap:30px}
  .custom-grid{grid-template-columns:1fr;gap:30px}
  .custom-content .sec-title{text-align:center}
  .custom-content{text-align:center}
  .vs-grid{grid-template-columns:1fr;gap:16px}
  .vs-badge{width:52px;height:52px}
  .scene-list{grid-template-columns:1fr}
}

@media (max-width:768px){
  .container{padding:0 20px}
  .logo{padding:12px 6px}
  .btn-nav{min-height:44px;padding:10px 20px;font-size:13px}
  .hero h1{font-size:30px}
  .hero-desc{font-size:15px}
  .hero-cta .btn{width:100%}
  .hero-float{display:none}
  .sec-title{font-size:24px}
  .sec-sub{font-size:14px}
  .step-grid{grid-template-columns:1fr}
  .dl-title{font-size:28px}
  .update-card{padding:30px 22px}
  .update-head{flex-direction:column;gap:12px}
  .dl-meta{font-size:13px;white-space:nowrap}
  .dl-btns{flex-direction:column;gap:14px}
  .btn-dl{width:100%}
  .tbl-wrap{border-radius:var(--radius)}
  .cmp-table{min-width:640px}
  .tbl-hint{display:block;text-align:center;font-size:12px;color:var(--muted);margin-top:12px}
  .download-box{padding:44px 20px}
  .btn-lg{padding:13px 26px;font-size:16px}
}

@media (max-width:640px){
  .feat-grid{grid-template-columns:1fr}
  .rev-grid{grid-template-columns:1fr}
  .priv-grid{grid-template-columns:1fr}
  .chat-body{min-height:210px;max-height:250px}
  .chat-input input{font-size:16px}
  .persona-grid{gap:10px}
  .persona span{font-size:13px}
  .priv p{font-size:14px}
  .pain{font-size:13.5px}
  .num{font-size:32px}
  .backtop{right:16px;bottom:20px;width:42px;height:42px}
}