:root{
  --primary:#FF5C9E;
  --grad:linear-gradient(135deg,#FF5C9E,#8B5CF6);
  --dark:#2E1E4E;
  --text:#5A4A7A;
  --muted:#8A7BA8;
  --border:#FFE3EF;
  --bg:#FFF9FC;
  --card:#FFFFFF;
  --shadow:0 14px 34px rgba(255,92,158,.16);
  --shadow-sm:0 8px 20px rgba(255,92,158,.12);
  --radius:20px;
  --nav-h:64px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",sans-serif;background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul{list-style:none}
input{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
section[id]{scroll-margin-top:76px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);transition:transform .3s ease,box-shadow .3s ease}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--grad);color:#fff;font-weight:600;border-radius:999px;transition:transform .3s ease,box-shadow .3s ease;white-space:nowrap}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}

.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,249,252,.86);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:box-shadow .3s ease}
.nav.scrolled{box-shadow:0 6px 24px rgba(255,92,158,.1)}
.nav-inner{display:flex;align-items:center;gap:28px;height:var(--nav-h)}
.logo{font-size:20px;font-weight:800;letter-spacing:-.5px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;flex:none}
.nav-links{display:flex;gap:4px;margin:0 auto}
.nav-links a{font-size:14px;color:var(--text);padding:6px 10px;border-radius:8px;transition:color .2s ease,background .2s ease}
.nav-links a:hover{color:var(--primary);background:#FFF0F6}
.nav-links a.active{color:var(--primary);font-weight:600;background:#FFF0F6}
.btn-nav{font-size:13px;padding:8px 18px;flex:none}

.hero{padding:calc(var(--nav-h) + 74px) 0 96px;background:linear-gradient(180deg,#FFF4F9 0%,var(--bg) 60%)}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--primary);background:#FFF0F6;border:1px solid var(--border);padding:6px 16px;border-radius:999px;margin-bottom:20px}
.hero h1{font-size:44px;line-height:1.25;color:var(--dark);letter-spacing:-1px}
.hero h1 .ver,.download-text h1 .ver{display:inline-block;font-weight:800;color:#fff;background:var(--grad);padding:4px 14px;border-radius:999px;vertical-align:middle;margin-left:8px;letter-spacing:0}
.hero h1 .ver{font-size:19px}
.hero-desc{font-size:17px;line-height:1.9;color:var(--text);margin:20px 0 26px;max-width:520px}
.hero-personas{display:grid;grid-template-columns:repeat(6,1fr);gap:6px}
.p-chip{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;font-size:14px;color:var(--dark);background:#fff;border:1px solid var(--border);border-radius:16px;padding:12px 4px;transition:.25s ease}
.chip-ava{width:44px;height:44px;border-radius:50%;object-fit:cover;flex:none}
.p-chip:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.chip-custom{border-style:dashed;border-color:var(--primary);color:var(--primary);background:#FFF7FB}
.hero-sub{font-size:14px;color:var(--muted);margin:16px 0 28px}
.btn-hero{font-size:16px;padding:15px 40px}
.hero-visual{position:relative;display:flex;justify-content:flex-end}
.hero-img{position:absolute;left:-60px;bottom:-34px;width:230px;z-index:0;border-radius:24px;box-shadow:var(--shadow);border:4px solid #fff;animation:float 5s ease-in-out infinite}
.chat-card{position:relative;z-index:1;width:100%;max-width:430px;background:#fff;border:1px solid var(--border);border-radius:22px;box-shadow:0 24px 60px rgba(255,92,158,.2);overflow:hidden}
.chat-head{display:flex;align-items:center;gap:10px;padding:14px 16px;background:linear-gradient(135deg,#FFF7FB,#F4EDFF);border-bottom:1px solid var(--border)}
.chat-ava{width:40px;height:40px;border-radius:50%;background:var(--grad);flex:none;overflow:hidden}
.chat-user strong{display:block;font-size:14px;color:var(--dark)}
.chat-user span{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:#22C55E}
.chat-user span::before{content:"";width:7px;height:7px;border-radius:50%;background:#22C55E;box-shadow:0 0 0 3px rgba(34,197,94,.18)}
.chat-body{padding:14px 16px;display:flex;flex-direction:column;gap:12px;background:linear-gradient(180deg,#FFF9FC,#F8F2FF)}
.msg{display:flex;gap:8px;align-items:flex-end;max-width:88%;animation:msgIn .5s ease both}
.msg-me{margin-left:auto;flex-direction:row-reverse}
.msg-ava{width:26px;height:26px;border-radius:50%;background:var(--grad);flex:none;overflow:hidden}
.chat-ava img,.msg-ava img{width:100%;height:100%;object-fit:cover;border-radius:50%}
.msg-bubble{position:relative;padding:9px 13px;border-radius:14px;font-size:14px;line-height:1.6}
.msg-ai .msg-bubble{background:#fff;border:1px solid var(--border);color:var(--dark);border-bottom-left-radius:4px}
.msg-me .msg-bubble{background:var(--grad);color:#fff;border-bottom-right-radius:4px}
.msg-time{display:block;font-size:10px;opacity:.55;margin-top:2px;text-align:right}
.typing{display:flex;gap:4px;align-items:center;padding:10px 14px;width:fit-content;background:#fff;border:1px solid var(--border);border-radius:14px;border-bottom-left-radius:4px;margin-left:34px}
.typing span{width:6px;height:6px;border-radius:50%;background:var(--primary);opacity:.4;animation:blink 1.2s infinite}
.typing span:nth-child(2){animation-delay:.2s}
.typing span:nth-child(3){animation-delay:.4s}
.chat-input{display:flex;gap:8px;padding:12px;background:#fff;border-top:1px solid var(--border)}
.chat-input input{flex:1;min-width:0;border:1px solid var(--border);border-radius:999px;padding:9px 16px;font-size:13px;background:#FFF9FC;color:var(--text);outline:none}
.chat-input input:focus{border-color:var(--primary)}
.chat-send{padding:9px 20px;border-radius:999px;background:var(--grad);color:#fff;font-size:13px;font-weight:600;transition:box-shadow .3s ease}
.chat-send:hover{box-shadow:0 6px 16px rgba(255,92,158,.35)}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
@keyframes msgIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@keyframes blink{0%,100%{opacity:.3}50%{opacity:1}}

.steps,.features,.compare,.persona,.privacy,.version,.faq{padding:96px 0}
.product,.scenarios,.reviews{padding:96px 0;background:#fff}
.sec-head{text-align:center;margin-bottom:52px}
.sec-head h2{font-size:34px;font-weight:800;color:var(--dark);letter-spacing:-.5px;line-height:1.3}
.sec-head h2::after{content:"";display:block;width:52px;height:5px;border-radius:3px;background:var(--grad);margin:16px auto 0}
.sec-head p{font-size:16px;color:var(--muted);margin-top:12px}

.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.step{position:relative;padding:40px 30px;text-align:center;overflow:hidden}
.step-num{font-size:54px;font-weight:800;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.step h3{font-size:20px;color:var(--dark);margin:18px 0 10px}
.step p{font-size:14.5px;color:var(--text);line-height:1.85}

.product-inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.product-visual img,.scenarios-img img,.persona-visual img,.privacy-img img{width:100%;border-radius:24px;box-shadow:var(--shadow);border:1px solid var(--border)}
.product-text h2,.scenarios-text h2,.persona-text h2,.privacy-text h2{font-size:32px;color:var(--dark)}
.product-text h2{line-height:1.35;margin-bottom:18px}
.product-text>p{font-size:16px;color:var(--text);line-height:1.9;margin-bottom:26px}
.product-list li{display:flex;flex-direction:column;gap:4px;padding:16px 18px;margin-bottom:12px;background:#FFF7FB;border:1px solid var(--border);border-radius:14px}
.product-list strong{color:var(--primary);font-size:16px}
.product-list span{font-size:14px;color:var(--text);line-height:1.7}

.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feat{padding:30px 26px}
.feat-icon{width:52px;height:52px;border-radius:16px;background:linear-gradient(135deg,#FFF0F6,#F1EBFF);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.feat-icon svg{width:26px;height:26px}
.feat h3{font-size:19px;color:var(--dark);margin-bottom:12px}
.feat p{font-size:14px;color:var(--text);line-height:1.85}
.feat p b{color:var(--primary);font-weight:600}

.cmp{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow-sm)}
.cmp-row{display:grid;grid-template-columns:1.1fr 1fr 1fr 1fr}
.cmp-row+.cmp-row{border-top:1px solid var(--border)}
.cmp-dim,.cmp-cell{padding:16px 18px;font-size:14px;line-height:1.7}
.cmp-head .cmp-dim,.cmp-head .cmp-cell{font-weight:700;color:var(--dark);background:#FFF3F9;font-size:15px}
.cmp-tk{background:linear-gradient(135deg,rgba(255,92,158,.08),rgba(139,92,246,.08));color:#E0438A;font-weight:600;box-shadow:inset 3px 0 0 var(--primary)}

.scenarios-inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.scenarios-text h2{line-height:1.35;margin-bottom:24px}
.sc-list li{position:relative;padding-left:28px;margin-bottom:14px;font-size:15.5px;color:var(--text);line-height:1.75}
.sc-list li::before{content:"✔";position:absolute;left:0;top:0;color:var(--primary);font-weight:700}
.sc-vs{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:28px}
.vs-item{font-size:15px;padding:11px 20px;border-radius:999px;background:#fff;border:1px solid var(--border);color:var(--muted)}
.vs-win{background:var(--grad);color:#fff;border-color:transparent;font-weight:600}
.vs-arrow{color:var(--primary);font-weight:700}
.scenarios-img img{width:100%;border-radius:24px;box-shadow:var(--shadow);border:1px solid var(--border)}

.data{background:linear-gradient(135deg,#2E1E4E 0%,#4A2E6E 55%,#6B3FA0 100%);padding:96px 0}
.sec-head-light h2{color:#fff}
.sec-head-light p{color:rgba(255,255,255,.75)}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.data-item{text-align:center;padding:38px 20px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:var(--radius);transition:transform .3s ease,background .3s ease}
.data-item:hover{transform:translateY(-6px);background:rgba(255,255,255,.13)}
.data-item strong{display:block;font-size:46px;font-weight:800;line-height:1.2;background:linear-gradient(135deg,#FF8FB8,#C7A6FF);-webkit-background-clip:text;background-clip:text;color:transparent}
.data-label{display:block;font-size:14px;color:rgba(255,255,255,.8);margin-top:10px}

.persona-inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.persona-visual img{width:100%;border-radius:24px;box-shadow:var(--shadow);border:1px solid var(--border)}
.persona-text h2{margin-bottom:18px}
.persona-text>p{font-size:15.5px;color:var(--text);line-height:1.9;margin-bottom:28px}
.persona-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.p-card{display:flex;align-items:center;gap:12px;padding:14px 16px;background:#fff;border:1px solid var(--border);border-radius:16px;transition:transform .3s ease,box-shadow .3s ease}
.p-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm)}
.p-card-custom{border-style:dashed;border-color:var(--primary);background:#FFF7FB}
.p-ava{width:44px;height:44px;border-radius:50%;background:var(--grad);flex:none;overflow:hidden}
.p-ava img{width:100%;height:100%;object-fit:cover}
.p-info strong{display:block;font-size:15px;color:var(--dark)}
.p-info span{font-size:12.5px;color:var(--muted)}

.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rev{padding:26px}
.rev-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.rev-ava{width:46px;height:46px;border-radius:50%;background:var(--grad);color:#fff;font-size:18px;font-weight:700;display:flex;align-items:center;justify-content:center;flex:none}
.rev-meta strong{display:block;font-size:15px;color:var(--dark)}
.stars{color:#FFB020;font-size:13px;letter-spacing:2px}
.rev p{font-size:14px;color:var(--text);line-height:1.85}

.privacy-inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.privacy-text h2{margin-bottom:16px}
.privacy-text>p{font-size:15.5px;color:var(--text);line-height:1.9;margin-bottom:24px}
.priv-list li{padding:16px 18px;margin-bottom:12px;background:#F4F0FF;border:1px solid #E9E0FF;border-radius:14px}
.priv-list strong{display:block;color:#7C5CE0;font-size:16px;margin-bottom:4px}
.priv-list span{font-size:14px;color:var(--text);line-height:1.7}
.privacy-img img{width:100%;border-radius:24px;box-shadow:var(--shadow);border:1px solid var(--border)}

.version-card{max-width:860px;margin:0 auto;padding:36px}
.ver-info{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding-bottom:20px;margin-bottom:22px;border-bottom:1px solid var(--border)}
.ver-badge{background:var(--grad);color:#fff;font-weight:800;font-size:15px;padding:8px 20px;border-radius:999px}
.ver-info time{font-size:14px;color:var(--muted)}
.ver-log li{position:relative;padding-left:26px;margin-bottom:12px;font-size:15px;color:var(--text);line-height:1.75}
.ver-log li::before{content:"";position:absolute;left:4px;top:9px;width:8px;height:8px;border-radius:50%;background:var(--grad)}

.faq-list{max-width:860px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:16px;background:#fff;margin-bottom:14px;overflow:hidden;transition:box-shadow .3s ease,border-color .3s ease}
.faq-item.open{box-shadow:var(--shadow-sm);border-color:#FFD3E6}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 22px;font-size:16px;font-weight:600;color:var(--dark);text-align:left}
.faq-icon{position:relative;width:20px;height:20px;flex:none}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform .3s ease,opacity .3s ease}
.faq-icon::before{top:9px;left:0;width:20px;height:2px}
.faq-icon::after{top:0;left:9px;width:2px;height:20px}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 22px 20px;font-size:14.5px;color:var(--text);line-height:1.85}

.download{padding:96px 0;background:linear-gradient(180deg,#FFF4F9,#F6EFFF)}
.download-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.download-text h1{font-size:40px;color:var(--dark);line-height:1.3;letter-spacing:-.5px}
.download-text h1 .ver{font-size:18px}
.dl-meta{font-size:14px;color:var(--muted);margin:14px 0 28px}
.dl-btns{display:flex;gap:16px;flex-wrap:wrap}
.dl-btn{font-size:15px;padding:14px 28px}
.dl-tip{font-size:14.5px;color:#A4558F;margin-top:22px}
.download-img img{width:100%;max-width:300px;margin:0 auto;border-radius:24px;box-shadow:var(--shadow);border:1px solid var(--border)}

.footer{padding:34px 0;background:#2E1E4E;color:rgba(255,255,255,.75);text-align:center;font-size:14px}
.footer a{color:#FF9EC4;font-weight:600}

.totop{position:fixed;right:26px;bottom:30px;z-index:99;width:46px;height:46px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .3s ease,transform .3s ease,visibility .3s ease}
.totop.show{opacity:1;visibility:visible;transform:none}
.totop svg{width:20px;height:20px}

.toast{position:fixed;left:50%;bottom:44px;z-index:200;transform:translateX(-50%) translateY(16px);background:#2E1E4E;color:#fff;padding:12px 24px;border-radius:999px;font-size:14px;box-shadow:0 12px 30px rgba(0,0,0,.25);opacity:0;visibility:hidden;transition:opacity .35s ease,transform .35s ease,visibility .35s ease}
.toast.show{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}

.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.js .reveal.in{opacity:1;transform:none}
.steps-grid .reveal:nth-child(2){transition-delay:.08s}
.steps-grid .reveal:nth-child(3){transition-delay:.16s}
.feat-grid .reveal:nth-child(2){transition-delay:.07s}
.feat-grid .reveal:nth-child(3){transition-delay:.14s}
.feat-grid .reveal:nth-child(4){transition-delay:.21s}
.rev-grid .reveal:nth-child(2){transition-delay:.06s}
.rev-grid .reveal:nth-child(3){transition-delay:.12s}
.rev-grid .reveal:nth-child(4){transition-delay:.06s}
.rev-grid .reveal:nth-child(5){transition-delay:.12s}
.rev-grid .reveal:nth-child(6){transition-delay:.18s}
.data-grid .reveal:nth-child(2){transition-delay:.07s}
.data-grid .reveal:nth-child(3){transition-delay:.14s}
.data-grid .reveal:nth-child(4){transition-delay:.21s}
.persona-list .reveal:nth-child(2){transition-delay:.05s}
.persona-list .reveal:nth-child(3){transition-delay:.1s}
.persona-list .reveal:nth-child(4){transition-delay:.15s}
.persona-list .reveal:nth-child(5){transition-delay:.2s}
.persona-list .reveal:nth-child(6){transition-delay:.25s}

@media (prefers-reduced-motion:reduce){
  .hero-img,.typing span{animation:none}
  .js .reveal{transition:none}
}

@media (max-width:1199px){
  .hero-personas{grid-template-columns:repeat(4,1fr)}
  .chip-ava{width:48px;height:48px}
}

@media (max-width:1100px){
  .nav-links{display:none}
  .nav-inner{justify-content:space-between}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .data-grid{grid-template-columns:repeat(2,1fr)}
}

@media (max-width:992px){
  .rev-grid{grid-template-columns:repeat(2,1fr)}
}

@media (max-width:860px){
  .hero{padding-top:calc(var(--nav-h) + 56px)}
  .hero-inner{grid-template-columns:1fr;gap:52px}
  .hero-text{text-align:center}
  .hero-desc{margin-left:auto;margin-right:auto}
  .hero-personas{grid-template-columns:repeat(3,1fr)}
  .chip-ava{width:52px;height:52px}
  .hero-visual{justify-content:center;flex-direction:column;align-items:center}
  .hero-img{position:static;width:150px;margin:0 0 18px;border-radius:20px;animation:none}
  .product-inner,.scenarios-inner,.persona-inner,.privacy-inner,.download-inner{grid-template-columns:1fr;gap:44px}
  .steps-grid{grid-template-columns:1fr}
  .cmp-row{grid-template-columns:1fr}
  .cmp-head{display:none}
  .cmp-dim{padding:14px 16px 8px;font-size:15px;font-weight:700;color:var(--dark);background:#FFF7FB}
  .cmp-cell{padding:11px 16px;display:flex;align-items:baseline;gap:10px;border-top:1px dashed var(--border);font-size:13.5px}
  .cmp-cell::before{content:attr(data-label);flex:none;width:88px;color:var(--muted);font-size:12.5px}
  .data{padding:80px 0}
}

@media (max-width:620px){
  .feat-grid{grid-template-columns:1fr}
  .persona-list{grid-template-columns:1fr}
  .rev-grid{grid-template-columns:1fr}
  .data-grid{grid-template-columns:1fr 1fr;gap:14px}
  .data-item{padding:28px 12px}
  .data-item strong{font-size:36px}
}

@media (max-width:560px){
  .container{padding:0 20px}
  .steps,.product,.features,.compare,.scenarios,.persona,.reviews,.privacy,.version,.faq,.download,.data{padding:72px 0}
  .sec-head{margin-bottom:40px}
  .sec-head h2{font-size:28px}
  .hero h1{font-size:34px}
  .hero-desc{font-size:15.5px}
  .btn-hero{width:100%;font-size:15px;padding:14px 0}
  .dl-meta{font-size:12.5px;white-space:nowrap}
  .dl-btns{flex-direction:column;width:100%}
  .dl-btn{width:100%;font-size:14.5px;padding:13px 0}
  .download-text h1{font-size:31px}
  .hero h1 .ver,.download-text h1 .ver{font-size:15px;padding:3px 10px}
  .product-text h2,.scenarios-text h2,.persona-text h2,.privacy-text h2{font-size:27px}
  .totop{right:16px;bottom:20px;width:42px;height:42px}
  .version-card{padding:24px 20px}
  .faq-q{font-size:15px;padding:16px 18px}
  .step{padding:30px 22px}
  .btn-nav{padding:10px 18px}
  .chat-send{padding:10px 20px;min-height:44px}
}