: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);
  --max:1180px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:70px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;overflow-x:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,p{margin:0}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:linear-gradient(90deg,var(--primary),var(--primary-deep));color:#fff;border-radius:999px;font-weight:600;box-shadow:0 8px 20px rgba(240,61,116,.26);transition:transform .25s,box-shadow .25s}
.btn:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(240,61,116,.34)}
.btn-nav{font-size:13.5px;padding:6px 18px;line-height:1.4}
.btn-lg{font-size:17px;padding:15px 32px}

/* nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,249,251,.88);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:background .3s,box-shadow .3s,border-color .3s}
.nav.scrolled{background:#fff;border-bottom-color:var(--border);box-shadow:0 8px 24px rgba(42,26,61,.06)}
.nav-inner{max-width:var(--max);margin:0 auto;padding:0 24px;height:68px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{display:flex;align-items:center;gap:9px;font-size:21px;font-weight:800;letter-spacing:.5px;color:var(--deep)}
.logo-text{line-height:1;white-space:nowrap}
.logo-mark{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--primary),#B14BE0)}
.nav-menu{display:flex;align-items:center;gap:26px}
.nav-menu a{font-size:15px;color:var(--text);transition:color .2s}
.nav-menu a:hover{color:var(--primary-deep)}

/* hero */
.hero{padding:112px 0 78px;overflow:hidden;background:radial-gradient(880px 460px at 84% -10%,#FFE6F1 0,rgba(255,230,241,0) 70%),var(--bg)}
.hero-copy{min-width:0}
.hero-grid{display:grid;grid-template-columns:1.04fr 1fr;gap:56px;align-items:center}
.hero-tag{display:inline-block;font-size:13px;font-weight:600;color:var(--primary-deep);background:var(--primary-soft);padding:6px 14px;border-radius:999px;margin-bottom:18px}
.hero h1{font-size:clamp(34px,3.9vw,52px);line-height:1.16;font-weight:800;letter-spacing:-.5px;color:var(--deep)}
.ver{display:inline-block;vertical-align:middle;font-size:.4em;font-weight:700;letter-spacing:1px;padding:4px 12px;border-radius:10px;background:var(--primary-soft);color:var(--primary-deep);transform:translateY(-2px)}
.hero-desc{margin-top:18px;font-size:16.5px;line-height:1.9;color:var(--text);max-width:520px}
.hero .btn-lg{margin-top:30px}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-facts li{font-size:13px;color:var(--muted);background:#fff;border:1px solid var(--border);border-radius:999px;padding:5px 14px}

.hero-visual{position:relative}
.hero-visual::before{content:"";position:absolute;inset:-26px -20px;border-radius:34px;background:linear-gradient(140deg,#FFCFE2,#EBD2FF);transform:rotate(-3deg)}
.chat-card{position:relative;z-index:1;display:flex;flex-direction:column;height:466px;background:#fff;border:1px solid var(--border);border-radius:24px;box-shadow:0 26px 60px rgba(240,61,116,.2);overflow:hidden}
.chat-top{display:flex;align-items:center;gap:12px;padding:14px 18px;color:#fff;background:linear-gradient(120deg,#FF5C8A,#B14BE0)}
.chat-ava{width:44px;height:44px;border-radius:50%;object-fit:cover;border:2px solid rgba(255,255,255,.75)}
.chat-who{flex:1;min-width:0}
.chat-name{font-size:16px;font-weight:700;line-height:1.35}
.chat-status{display:flex;align-items:center;gap:6px;font-size:12px;line-height:1.5;color:rgba(255,255,255,.94)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px rgba(46,197,126,.3)}
.chat-ico{display:grid;place-items:center;color:rgba(255,255,255,.9)}
.chat-body{flex:1;overflow-y:auto;padding:16px 16px 6px;background:#FFF6FA}
.chat-time{text-align:center;font-size:11.5px;color:#9E8CAB;margin-bottom:14px}
.msg{display:flex;align-items:flex-start;gap:8px;margin-bottom:12px}
.msg.me{flex-direction:row-reverse}
.msg-ava{width:30px;height:30px;border-radius:50%;object-fit:cover;flex:none}
.bubble{max-width:78%;font-size:14px;line-height:1.72;color:var(--text);background:#fff;border:1px solid var(--border);border-radius:4px 14px 14px 14px;padding:9px 13px;box-shadow:0 3px 10px rgba(240,61,116,.07)}
.msg.me .bubble{background:linear-gradient(120deg,var(--primary),var(--primary-deep));color:#fff;border-color:transparent;border-radius:14px 4px 14px 14px}
.chat-foot{display:flex;align-items:center;gap:10px;padding:12px 14px;background:#fff;border-top:1px solid var(--border)}
.chat-input{flex:1;min-width:0;height:42px;display:flex;align-items:center;padding:0 14px;font-size:13.5px;color:#8A7896;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;background:var(--bg);border:1px solid var(--border);border-radius:999px}
.chat-send{flex:none;height:42px;padding:0 20px;border-radius:999px;font-size:14px;font-weight:600;color:#fff;background:linear-gradient(90deg,var(--primary),var(--primary-deep));transition:transform .2s,box-shadow .2s}
.chat-send:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(240,61,116,.3)}
.chat-send.is-off{background:#EDE1E8;color:#A797B0;box-shadow:none;transform:none;cursor:default}

.persona-block{margin-top:66px;padding:28px 34px 30px;background:var(--card);border:1px solid var(--border);border-radius:24px;box-shadow:var(--shadow)}
.persona-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px;margin-bottom:20px}
.persona-head h3{font-size:19px;color:var(--deep)}
.persona-head p{font-size:13.5px;color:var(--muted)}
.persona-list{display:grid;grid-template-columns:repeat(6,1fr);gap:10px}
.persona{text-align:center;padding:14px 6px;border:1px solid transparent;border-radius:16px;transition:transform .25s,background .25s,border-color .25s}
.persona:hover{transform:translateY(-4px);background:var(--bg-soft);border-color:var(--border)}
.persona img{width:76px;height:76px;margin:0 auto 10px;border-radius:50%;object-fit:cover;border:2px solid #fff;box-shadow:0 8px 18px rgba(240,61,116,.16)}
.persona-name{font-size:14.5px;font-weight:700;color:var(--deep);line-height:1.4}
.persona-tag{display:inline-block;margin-top:4px;font-size:11.5px;padding:1px 9px;border-radius:999px;background:var(--primary-soft);color:var(--primary-deep)}

/* section */
.sec{padding:86px 0}
.sec-soft{background:var(--bg-soft)}
.sec-head{max-width:740px;margin:0 auto 46px;text-align:center}
.sec-tag{display:inline-block;font-size:13px;font-weight:600;letter-spacing:1px;color:var(--primary-deep);background:var(--primary-soft);padding:5px 14px;border-radius:999px;margin-bottom:14px}
.sec-title{font-size:clamp(25px,2.9vw,37px);line-height:1.3;font-weight:800;letter-spacing:-.3px;color:var(--deep)}
.sec-sub{margin-top:14px;font-size:15.5px;line-height:1.85;color:var(--muted)}
.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)}

/* steps */
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{padding:32px 28px}
.step-num{font-size:44px;font-weight:800;line-height:1;letter-spacing:-2px;background:linear-gradient(120deg,var(--primary),#B14BE0);-webkit-background-clip:text;background-clip:text;color:transparent}
.step h3{margin:14px 0 8px;font-size:19px;color:var(--deep)}
.step p{font-size:14.5px;line-height:1.85;color:var(--muted)}

/* product */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-media img{width:100%;border-radius:24px;border:1px solid var(--border);box-shadow:0 20px 46px rgba(240,61,116,.14)}
.split-copy .sec-title{font-size:clamp(24px,2.6vw,34px)}
.lead{margin-top:16px;font-size:15.5px;line-height:1.9;color:var(--muted)}
.check-list{display:grid;gap:12px;margin-top:24px}
.check-list li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;line-height:1.75;color:var(--text)}
.ck{flex:none;width:20px;height:20px;margin-top:3px;border-radius:50%;display:grid;place-items:center;background:var(--green)}
.ck::after{content:"";width:9px;height:9px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='3.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 12.5l5.5 5.5L20 6.5'/%3E%3C/svg%3E") center/contain no-repeat}

/* features */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.feat{padding:28px 24px}
.fi{width:48px;height:48px;margin-bottom:16px;border-radius:14px;display:grid;place-items:center;color:var(--primary-deep);background:var(--primary-soft)}
.feat h3,.pv h3{margin-bottom:10px;font-size:18px;color:var(--deep)}
.pain{margin-bottom:12px;padding:7px 10px;font-size:12.5px;line-height:1.6;color:var(--primary-deep);background:#FFF3F8;border-radius:9px}
.pain b{margin-right:5px;font-weight:700}
.feat .desc{font-size:14px;line-height:1.85;color:var(--muted)}

/* compare */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.cmp{width:100%;min-width:640px;border-collapse:collapse;font-size:14.5px}
.cmp-cap{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.cmp th,.cmp td{padding:16px 18px;text-align:center;white-space:nowrap;border-bottom:1px solid var(--border)}
.cmp thead th{font-size:15px;font-weight:700;color:var(--deep);background:#FFF6FA}
.cmp thead th:first-child{text-align:left}
.cmp thead th:nth-child(2){color:#fff;background:linear-gradient(90deg,var(--primary),var(--primary-deep))}
.cmp tbody tr:nth-child(even){background:#FFFAFC}
.cmp tbody th{text-align:left;font-weight:600;color:var(--deep);background:#FFF8FB}
.cmp td{color:var(--muted)}
.cmp td.own{font-weight:600;color:var(--primary-deep);background:#FFF4F9}
.cmp tbody tr:last-child th,.cmp tbody tr:last-child td{border-bottom:0}
.swipe-tip{display:none;margin-top:12px;font-size:13px;text-align:center;color:var(--muted)}

/* scenes */
.scene-check{grid-template-columns:repeat(2,1fr);gap:14px 26px;max-width:960px;margin:0 auto 54px}
.scene-check li{font-size:15px}
.vs-wrap{display:grid;grid-template-columns:1fr auto 1fr;gap:20px;align-items:stretch;max-width:980px;margin:0 auto}
.vs-card{padding:28px 26px}
.vs-card h3{margin-bottom:14px;font-size:18px;color:var(--deep)}
.vs-card li{position:relative;padding-left:18px;margin-bottom:10px;font-size:14.5px;line-height:1.75;color:var(--muted)}
.vs-card li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:#D9C4D3}
.vs-good{background:linear-gradient(160deg,#FFF2F8,#F8EBFF);border-color:#F3CFE2}
.vs-good li{color:var(--text)}
.vs-good li::before{background:var(--primary)}
.vs-badge{align-self:center;width:52px;height:52px;border-radius:50%;display:grid;place-items:center;font-size:15px;font-weight:800;letter-spacing:.5px;color:#fff;background:linear-gradient(135deg,var(--primary),#B14BE0);box-shadow:0 10px 24px rgba(240,61,116,.3)}

/* stats */
.stats{padding:76px 0;color:#fff;background:radial-gradient(700px 380px at 12% 0,#4A2E63 0,rgba(74,46,99,0) 70%),radial-gradient(700px 400px at 88% 110%,#5A2C50 0,rgba(90,44,80,0) 70%),var(--deep)}
.stats .sec-tag{color:#FFD3E3;background:rgba(255,92,138,.22)}
.stats .sec-title{color:#fff}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat{padding:10px 6px;border-right:1px solid rgba(255,255,255,.12)}
.stat:last-child{border-right:0}
.stat-num{font-size:clamp(30px,3.5vw,44px);font-weight:800;line-height:1.15;letter-spacing:-1px;background:linear-gradient(90deg,#FF9FC2,#D6B0FF);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-label{margin-top:8px;font-size:14px;color:rgba(255,255,255,.82)}

/* custom */
.custom-card{display:grid;grid-template-columns:.92fr 1.08fr;gap:48px;align-items:center;padding:44px;border:1px solid #F3D6E6;border-radius:28px;background:linear-gradient(135deg,#FFF1F7,#F6E9FF);box-shadow:0 20px 50px rgba(240,61,116,.12)}
.custom-media img{width:100%;border-radius:22px;border:1px solid rgba(255,255,255,.7);box-shadow:0 18px 40px rgba(240,61,116,.16)}
.custom-copy .sec-title{font-size:clamp(23px,2.5vw,32px)}
.custom-points{display:grid;gap:10px;margin:20px 0 26px}
.custom-points li{font-size:14.5px;line-height:1.8;color:var(--text)}
.custom-points b{color:var(--deep)}

/* reviews */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review{padding:26px 24px}
.rv-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.rv-ava{width:44px;height:44px;flex:none;border-radius:50%;display:grid;place-items:center;font-size:16px;font-weight:700;color:#fff;background:linear-gradient(135deg,var(--primary),#B14BE0)}
.rv-meta{flex:1;min-width:0}
.rv-name{font-size:15px;font-weight:700;line-height:1.4;color:var(--deep)}
.rv-stars{font-size:12px;line-height:1.5;letter-spacing:2px;color:#FFB01F}
.rv-text{font-size:14px;line-height:1.9;color:var(--muted)}

/* privacy */
.privacy-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.pv{padding:28px 24px}
.pv p{font-size:14px;line-height:1.85;color:var(--muted)}

/* updates */
.update-card{max-width:880px;margin:0 auto;padding:34px;background:#fff;border:1px solid var(--border);border-radius:22px;box-shadow:var(--shadow)}
.update-top{display:flex;flex-wrap:wrap;align-items:center;gap:12px;padding-bottom:18px;margin-bottom:20px;border-bottom:1px dashed var(--border)}
.ver-pill{padding:6px 16px;font-size:15px;font-weight:800;letter-spacing:.5px;color:#fff;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--primary-deep))}
.update-date{font-size:14px;color:var(--muted)}
.log-list li{position:relative;padding-left:20px;margin-bottom:11px;font-size:14.5px;line-height:1.8;color:var(--text)}
.log-list li:last-child{margin-bottom:0}
.log-list li::before{content:"";position:absolute;left:2px;top:10px;width:7px;height:7px;border-radius:50%;background:var(--primary-soft);box-shadow:inset 0 0 0 2px var(--primary)}

/* faq */
.faq{display:grid;gap:14px;max-width:860px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);overflow:hidden;transition:border-color .25s,box-shadow .25s}
.faq-item.open{border-color:#F2BCD4;box-shadow:var(--shadow-hover)}
.faq-q{width:100%;min-height:44px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;font-size:16px;font-weight:600;color:var(--deep);text-align:left}
.faq-q::after{content:"";flex:none;width:18px;height:18px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23F03D74' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M6 9.5l6 6 6-6'/%3E%3C/svg%3E") center/contain no-repeat;transition:transform .3s}
.faq-item.open .faq-q::after{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 22px 20px;font-size:14.5px;line-height:1.85;color:var(--muted)}

/* download */
.download{padding:80px 0 88px}
.dl-card{padding:52px 40px 46px;text-align:center;border-radius:28px;color:#fff;background:linear-gradient(135deg,#FF5C8A,#B14BE0);box-shadow:0 26px 60px rgba(240,61,116,.28)}
.dl-card h1{font-size:clamp(30px,3.4vw,44px);font-weight:800;line-height:1.2;letter-spacing:-.5px}
.dl-card .ver{background:rgba(255,255,255,.22);color:#fff}
.dl-sub{margin-top:12px;font-size:16px;color:rgba(255,255,255,.94)}
.dl-meta{margin-top:14px;font-size:14px;color:rgba(255,255,255,.86)}
.dl-actions{display:flex;justify-content:center;gap:16px;margin-top:30px}
.dl-btn{display:inline-flex;align-items:center;justify-content:center;min-width:250px;min-height:52px;padding:14px 28px;font-size:16px;font-weight:700;color:var(--primary-deep);background:#fff;border-radius:999px;box-shadow:0 10px 26px rgba(58,20,60,.18);transition:transform .25s,box-shadow .25s}
.dl-btn:hover{transform:translateY(-3px);box-shadow:0 16px 32px rgba(58,20,60,.24)}
.dl-tip{margin-top:22px;font-size:13.5px;color:rgba(255,255,255,.9)}

/* footer */
.footer{padding:38px 0;text-align:center;color:rgba(255,255,255,.74);background:var(--deep)}
.ft-main{font-size:13.5px}
.ft-main a{color:#FFB6CF;font-weight:600}
.ft-note{margin-top:8px;font-size:12.5px;color:rgba(255,255,255,.55)}

/* to top */
.to-top{position:fixed;right:24px;bottom:26px;z-index:90;width:46px;height:46px;border-radius:50%;display:grid;place-items:center;color:var(--primary-deep);background:#fff;border:1px solid var(--border);box-shadow:0 10px 24px rgba(240,61,116,.2);opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .3s,transform .3s,visibility .3s}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary-deep))}

@media (max-width:1100px){
  .persona-list{grid-template-columns:repeat(3,1fr)}
  .feat-grid,.privacy-grid,.stat-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:0}
  .stat-grid{gap:28px 20px}
  .hero-grid{gap:40px}
  .custom-card{gap:36px;padding:36px}
  .split{gap:40px}
}

@media (max-width:900px){
  .nav-menu{display:none}
  .hero{padding:96px 0 62px}
  .hero-grid{grid-template-columns:1fr;gap:48px}
  .hero-desc{max-width:100%}
  .split,.custom-card{grid-template-columns:1fr}
  .custom-media{max-width:440px;margin:0 auto}
  .vs-wrap{grid-template-columns:1fr;justify-items:center}
  .vs-card{width:100%}
  .step-grid{grid-template-columns:1fr}
  .custom-copy .btn-lg{display:flex;width:fit-content;margin:0 auto}
  .hero-visual::before{inset:-14px -10px}
}

@media (max-width:768px){
  .container{padding:0 20px}
  .nav-inner{padding:0 20px}
  .btn-nav{min-height:44px;padding:0 22px}
  .sec{padding:58px 0}
  .sec-head{margin-bottom:34px}
  .hero{padding:92px 0 54px}
  .hero .btn-lg{width:100%}
  .hero-visual::before{border-radius:26px}
  .persona-block{margin-top:44px;padding:22px 16px 24px}
  .persona-list{gap:4px}
  .cmp{min-width:640px}
  .swipe-tip{display:block}
  .scene-check{grid-template-columns:1fr;margin-bottom:40px}
  .vs-badge{width:46px;height:46px;font-size:13px}
  .stats{padding:56px 0}
  .stat-grid{gap:26px 12px}
  .stat{border-right:0;padding:0}
  .custom-card{padding:26px 20px;gap:26px}
  .update-card{padding:24px 20px}
  .dl-card{padding:34px 22px 32px;border-radius:22px}
  .dl-meta{font-size:11.5px;white-space:nowrap;letter-spacing:-.2px}
  .dl-actions{flex-direction:column;gap:12px;margin-top:24px}
  .dl-btn{width:100%;min-width:0}
  .to-top{right:16px;bottom:18px;width:42px;height:42px}
}

@media (max-width:640px){
  .feat-grid,.review-grid,.privacy-grid{grid-template-columns:1fr;gap:16px}
  .chat-card{height:392px}
  .chat-body{padding:14px 12px 4px}
  .bubble{max-width:84%;font-size:13.5px}
  .chat-send{height:40px;padding:0 16px;font-size:13px}
  .chat-input{height:40px;font-size:12.5px}
  .persona img{width:64px;height:64px;margin-bottom:8px}
  .persona-name{font-size:13px}
  .persona-tag{font-size:10.5px;padding:1px 7px}
  .hero-facts li{font-size:12px;padding:4px 11px}
  .step{padding:24px 22px}
  .feat,.pv,.review{padding:22px 20px}
}