: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:64px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 10px)}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:84px 0}
.section-alt{background:var(--bg-soft)}
.sec-title{font-size:34px;font-weight:700;color:var(--deep);text-align:center;letter-spacing:.5px}
.sec-sub{text-align:center;color:var(--muted);margin-top:10px;margin-bottom:44px}
.sec-title-light{color:#fff}

.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;transition:transform .25s,box-shadow .25s;box-shadow:0 8px 20px rgba(240,61,116,.28);cursor:pointer;padding:12px 28px;min-height:44px}
.btn:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(240,61,116,.38)}
.btn-sm{font-size:14px;padding:9px 20px;min-height:44px}
.btn-lg{font-size:17px;padding:15px 38px;min-height:54px}

.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,249,251,.92);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:box-shadow .3s,border-color .3s}
.nav.scrolled{box-shadow:0 6px 20px rgba(240,61,116,.10);border-color:var(--border)}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:var(--nav-h);display:flex;align-items:center;gap:26px}
.nav-logo{display:flex;align-items:center;gap:8px;font-size:21px;font-weight:700;color:var(--deep);padding:10px 8px;min-height:44px}
.nav-logo-dot{width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--primary),var(--primary-deep));box-shadow:0 4px 10px rgba(240,61,116,.3)}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-menu a{font-size:14px;color:var(--text);padding:8px 10px;border-radius:8px;transition:color .2s,background .2s}
.nav-menu a:hover{color:var(--primary);background:var(--primary-soft)}
.nav-inner>.btn{margin-left:6px;flex-shrink:0}

.hero{padding:calc(var(--nav-h) + 56px) 0 72px;background:linear-gradient(180deg,var(--bg) 0%,var(--bg-soft) 100%);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;width:480px;height:480px;border-radius:50%;background:radial-gradient(circle,rgba(255,92,138,.14),transparent 65%);top:-120px;right:-100px;pointer-events:none}
.hero::after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(240,61,116,.10),transparent 65%);bottom:-140px;left:-120px;pointer-events:none}
.hero-inner{display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center;position:relative}
.hero-left h1{font-size:44px;line-height:1.3;color:var(--deep);font-weight:800}
.hero-left h1 em{font-style:normal;background:linear-gradient(90deg,var(--primary),var(--primary-deep));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{margin-top:18px;font-size:16.5px;color:var(--text);line-height:2}
.hero-cta{margin-top:28px;display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.hero-cta-tip{font-size:13.5px;color:var(--muted)}
.hero-avatars{margin-top:34px;display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.avatar-item{display:flex;flex-direction:column;align-items:center;gap:8px}
.avatar-item img{width:80px;height:80px;border-radius:50%;object-fit:cover;border:3px solid #fff;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.avatar-item:hover img{transform:translateY(-5px) scale(1.04);box-shadow:var(--shadow-hover)}
.avatar-item span{font-size:12.5px;color:var(--muted)}
.hero-pick{margin-top:14px;font-size:13.5px;color:var(--muted)}

.chat{background:#fff;border-radius:22px;box-shadow:0 20px 48px rgba(240,61,116,.16);border:1px solid var(--border);overflow:hidden}
.chat-head{display:flex;align-items:center;gap:12px;padding:14px 18px;background:linear-gradient(90deg,var(--primary),var(--primary-deep))}
.chat-avatar{width:44px;height:44px;border-radius:50%;object-fit:cover;border:2px solid rgba(255,255,255,.85)}
.chat-head-info{display:flex;flex-direction:column;line-height:1.3}
.chat-head-info strong{color:#fff;font-size:15px}
.chat-status{font-size:11.5px;color:rgba(255,255,255,.9);display:flex;align-items:center;gap:5px}
.chat-status i{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px rgba(46,197,126,.3)}
.chat-body{height:340px;overflow-y:auto;padding:18px;background:var(--bg);display:flex;flex-direction:column;gap:12px}
.bubble{max-width:78%;padding:11px 15px;border-radius:16px;font-size:14px;line-height:1.6;animation:bubbleIn .35s ease}
@keyframes bubbleIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.bubble.ai{background:#fff;border:1px solid var(--border);color:var(--text);align-self:flex-start;border-bottom-left-radius:4px}
.bubble.me{background:linear-gradient(90deg,var(--primary),var(--primary-deep));color:#fff;align-self:flex-end;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:42px;border:1px solid var(--border);border-radius:21px;background:var(--bg);padding:0 16px;font-size:13.5px;color:var(--muted);outline:none}
.chat-send{width:46px;height:46px;border:none;border-radius:50%;background:linear-gradient(90deg,var(--primary),var(--primary-deep));color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:transform .2s,box-shadow .2s,opacity .3s;box-shadow:0 6px 14px rgba(240,61,116,.3);flex-shrink:0}
.chat-send:hover{transform:scale(1.06)}
.chat-send.disabled{background:#D9C7D6;box-shadow:none;cursor:not-allowed;opacity:.75}
.chat-send.disabled:hover{transform:none}

.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap: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)}
.step-card{padding:34px 28px;position:relative;overflow:hidden}
.step-num{position:absolute;top:22px;right:24px;font-size:44px;font-weight:800;color:var(--primary-soft);line-height:1}
.step-card h3{font-size:19px;color:var(--deep);margin:12px 0 10px}
.step-card p{font-size:14.5px;color:var(--muted);line-height:1.8}

.intro-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:52px;align-items:center}
.intro-media img,.custom-media img{border-radius:var(--radius);box-shadow:var(--shadow);width:100%}
.intro-text h2,.custom-text h2{font-size:32px;color:var(--deep);line-height:1.4}
.intro-lead{margin:16px 0 22px;font-size:15.5px;color:var(--text);line-height:2}
.check-list{display:flex;flex-direction:column;gap:13px}
.check-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--text);line-height:1.7}
.check-ico{width:22px;height:22px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-deep));position:relative;flex-shrink:0;margin-top:3px}
.check-ico::before{content:"";position:absolute;left:6px;top:4px;width:9px;height:5px;border-left:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(-45deg)}

.feat-card{padding:30px 26px}
.feat-ico{width:52px;height:52px;border-radius:14px;background:var(--primary-soft);display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px}
.feat-card h3{font-size:18px;color:var(--deep);margin-bottom:8px}
.feat-pain{font-size:13.5px;color:var(--primary-deep);font-weight:600;margin-bottom:10px}
.feat-card p:last-child{font-size:14px;color:var(--muted);line-height:1.8}

.cmp-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--radius);box-shadow:var(--shadow)}
.cmp-table{width:100%;border-collapse:collapse;background:#fff;font-size:14.5px}
.cmp-table th,.cmp-table td{padding:15px 18px;text-align:center;border-bottom:1px solid var(--border);white-space:nowrap}
.cmp-table thead th{background:linear-gradient(90deg,var(--primary),var(--primary-deep));color:#fff;font-weight:600;white-space:nowrap}
.cmp-table thead th:first-child{border-radius:var(--radius) 0 0 0}
.cmp-table tbody td:first-child{font-weight:600;color:var(--deep);text-align:left;white-space:nowrap}
.cmp-hot{color:var(--primary-deep);font-weight:600}
.cmp-table tbody tr:last-child td{border-bottom:none}
.cmp-tip{display:none;text-align:center;font-size:12.5px;color:var(--muted);margin-top:10px}

.scene-list{max-width:780px;margin:0 auto 48px;display:flex;flex-direction:column;gap:13px}
.scene-list li{display:flex;align-items:center;gap:12px;font-size:15.5px;color:var(--text);background:var(--card);border:1px solid var(--border);border-radius:14px;padding:13px 20px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.scene-list li:hover{transform:translateX(6px);box-shadow:var(--shadow-hover)}
.scene-ok{width:24px;height:24px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-deep));position:relative;flex-shrink:0}
.scene-ok::before{content:"";position:absolute;left:7px;top:5px;width:9px;height:5px;border-left:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(-45deg)}
.vs-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.vs-card{padding:32px 30px}
.vs-card h3{font-size:19px;margin-bottom:18px;display:flex;align-items:center;gap:8px}
.vs-card h3::before{content:"";width:10px;height:10px;border-radius:50%;display:inline-block}
.vs-bad{background:#F7F1F5;border-color:#EADCE6}
.vs-bad h3{color:var(--muted)}
.vs-bad h3::before{background:#C9B8C6}
.vs-bad li{font-size:14.5px;color:var(--muted);padding:9px 0;border-bottom:1px dashed var(--border);line-height:1.7}
.vs-bad li:last-child{border-bottom:none}
.vs-good{border-color:var(--primary);background:linear-gradient(180deg,#fff,#FFF5F8)}
.vs-good h3{color:var(--primary-deep)}
.vs-good h3::before{background:var(--primary)}
.vs-good li{font-size:14.5px;color:var(--text);padding:9px 0;border-bottom:1px dashed var(--border);line-height:1.7;display:flex;gap:8px}
.vs-good li::before{content:"✓";color:var(--primary);font-weight:700}
.vs-good li:last-child{border-bottom:none}

.data-sec{background:linear-gradient(135deg,var(--deep) 0%,#3D2A55 100%);padding:84px 0;position:relative;overflow:hidden}
.data-sec::before{content:"";position:absolute;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(255,92,138,.25),transparent 65%);top:-120px;right:-80px}
.data-item{text-align:center;padding:30px 12px}
.data-num{font-size:46px;font-weight:800;background:linear-gradient(90deg,#FF8FB0,var(--primary));-webkit-background-clip:text;background-clip:text;color:transparent;display:block;line-height:1.2}
.data-item span{color:rgba(255,255,255,.82);font-size:15px;margin-top:8px;display:block}

.custom-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center}
.custom-text .btn{margin-top:26px}

.review-card{padding:26px 26px 24px}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.review-avatar{width:46px;height:46px;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-shrink:0}
.review-meta strong{display:block;font-size:15px;color:var(--deep)}
.stars{color:#FFB340;font-size:13px;letter-spacing:2px}
.review-card p{font-size:14px;color:var(--text);line-height:1.85}

.priv-card{padding:30px 26px}
.priv-ico{width:52px;height:52px;border-radius:14px;background:var(--primary-soft);display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px}
.priv-card h3{font-size:17.5px;color:var(--deep);margin-bottom:8px}
.priv-card p{font-size:14px;color:var(--muted);line-height:1.8}

.update-card{padding:38px 36px;max-width:820px;margin:0 auto}
.update-top{margin-bottom:22px}
.update-top h3{font-size:22px;color:var(--deep)}
.update-date{color:var(--muted);font-size:14px;margin-top:6px}
.update-cta{text-align:center;margin-top:28px}
.update-list{display:flex;flex-direction:column;gap:12px}
.update-list li{display:flex;align-items:flex-start;gap:12px;font-size:14.5px;color:var(--text);line-height:1.7}
.tag-new,.tag-opt,.tag-fix,.tag-sec{font-size:12px;padding:2px 10px;border-radius:999px;flex-shrink:0;margin-top:3px;font-weight:600}
.tag-new{background:#E7F9F0;color:#1EA96A}
.tag-opt{background:var(--primary-soft);color:var(--primary-deep)}
.tag-fix{background:#FFF3E0;color:#E8820C}
.tag-sec{background:#EDE7FB;color:#7A5AE0}

.faq-wrap{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{border-radius:16px;overflow:hidden}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;background:#fff;border:none;cursor:pointer;font-size:15.5px;font-weight:600;color:var(--deep);text-align:left;font-family:inherit;transition:color .2s}
.faq-q:hover{color:var(--primary-deep)}
.faq-arrow{flex-shrink:0;color:var(--primary);transition:transform .3s}
.faq-item.open .faq-arrow{transform:rotate(180deg)}
.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);line-height:1.85}

.download-sec{padding:88px 0;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-deep) 100%);text-align:center;position:relative;overflow:hidden}
.download-sec::before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.18),transparent 65%);top:-160px;left:-120px}
.download-sec::after{content:"";position:absolute;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.14),transparent 65%);bottom:-150px;right:-100px}
.download-sec h2{font-size:40px;color:#fff;font-weight:800;position:relative}
.download-sec h2 em{font-style:normal;color:#FFE9F0}
.dl-info{color:rgba(255,255,255,.92);font-size:14px;margin:14px 0 32px;position:relative}
.dl-btns{display:flex;justify-content:center;gap:18px;position:relative}
.dl-btns .btn{background:#fff;color:var(--primary-deep);box-shadow:0 12px 30px rgba(42,26,61,.25)}
.dl-btns .btn:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(42,26,61,.32)}
.dl-btns .btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.85);box-shadow:none}
.dl-btns .btn-outline:hover{background:rgba(255,255,255,.12)}
.dl-tip{color:#fff;font-size:14px;margin-top:26px;position:relative}

.footer{background:var(--deep);color:rgba(255,255,255,.75);text-align:center;padding:26px 0;font-size:13.5px}
.footer a{color:#FFB3C9;font-weight:600}
.footer a:hover{color:#fff}

.back-top{position:fixed;right:26px;bottom:30px;width:46px;height:46px;border-radius:50%;border:none;background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 10px 24px rgba(240,61,116,.35);opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .3s,transform .3s,visibility .3s;z-index:90}
.back-top.show{opacity:1;visibility:visible;transform:none}
.back-top:hover{transform:translateY(-3px)}

@media (max-width:1100px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-right{max-width:480px;margin:0 auto;width:100%}
  .hero-left h1{font-size:36px}
  .hero-avatars{grid-template-columns:repeat(3,1fr);gap:16px 12px}
  .grid4{grid-template-columns:repeat(2,1fr)}
  .grid3{grid-template-columns:repeat(2,1fr)}
  .grid3 .card:last-child{grid-column:1/-1}
  .sec-title{font-size:29px}
  .avatar-item img{width:76px;height:76px}
}

@media (max-width:900px){
  .nav-menu{display:none}
  .nav-inner>.btn{margin-left:auto}
  .intro-grid,.custom-grid{grid-template-columns:1fr;gap:36px}
  .vs-grid{grid-template-columns:1fr}
  .hero{padding-top:calc(var(--nav-h) + 36px)}
}

@media (max-width:768px){
  .wrap{padding:0 20px}
  .section{padding:60px 0}
  .sec-title{font-size:25px}
  .sec-sub{font-size:14px;margin-bottom:32px}
  .grid3{grid-template-columns:1fr}
  .cmp-scroll{border-radius:14px}
  .cmp-table{min-width:640px}
  .cmp-tip{display:block}
  .dl-btns{flex-direction:column;align-items:stretch;padding:0 10px}
  .dl-btns .btn{width:100%}
  .dl-info{font-size:12.5px}
  .data-num{font-size:36px}
  .download-sec h2{font-size:30px}
  .chat-body{height:300px}
  .chat-input input{font-size:16px}
  .avatar-item img{width:68px;height:68px}
  .hero-cta{align-items:stretch}
  .hero-cta .btn{width:100%}
  .hero-cta-tip{text-align:center}
  .custom-text .btn{width:100%}
}

@media (max-width:640px){
  .grid4{grid-template-columns:1fr}
  .chat-body{height:252px}
  .hero-left h1{font-size:30px}
  .hero-lead{font-size:15px}
  .btn-lg{font-size:16px;padding:14px 30px}
  .update-card{padding:28px 20px}
  .vs-card{padding:26px 22px}
}