/* ============ bubbly AI 落地页样式 ============ */
:root{
  --primary:#FF5D8F;
  --primary-deep:#F04A7E;
  --primary-soft:#FFF0F6;
  --accent:#B78CFF;
  --accent-soft:#F5EEFF;
  --dark:#33263F;
  --text:#473A58;
  --muted:#7A6D90;
  --border:#F3E2EB;
  --bg:#FFFBFD;
  --bg-soft:#FFF4F9;
  --card:#FFFFFF;
  --grad:linear-gradient(135deg,var(--primary),var(--accent));
  --shadow:0 10px 28px rgba(255,93,143,.12);
  --shadow-hover:0 18px 44px rgba(255,93,143,.2);
  --radius:18px;
  --radius-sm:12px;
  --nav-h:68px;
}

*{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",Roboto,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%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input{font-family:inherit;border:none;outline:none}
section[id]{scroll-margin-top:calc(var(--nav-h) + 10px)}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 16px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary-deep);
  font-size:13px;font-weight:600;border:1px solid var(--border);
}
.sec-tag{
  display:inline-block;padding:5px 14px;border-radius:999px;
  background:var(--accent-soft);color:#8A5CF6;font-size:13px;font-weight:600;
}
.sec-head{text-align:center;max-width:640px;margin:0 auto 48px}
.sec-head h2{font-size:34px;line-height:1.35;color:var(--dark);margin:14px 0 10px;font-weight:800}
.sec-head p{color:var(--muted);font-size:16px}
.sec-head.light h2{color:#fff}
.sec-head.light p{color:rgba(255,255,255,.85)}
.section{padding:90px 0}
.section-soft{background:var(--bg-soft)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:700;line-height:1;
  transition:transform .25s,box-shadow .25s,background .25s,color .25s;
  white-space:nowrap;
}
.btn-primary{
  background:var(--grad);
  color:#fff;box-shadow:0 8px 22px rgba(255,93,143,.35);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(255,93,143,.45)}
.btn-dark{background:var(--dark);color:#fff;box-shadow:0 8px 22px rgba(51,38,63,.3)}
.btn-dark:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(51,38,63,.4)}
.btn-light{background:#fff;color:var(--primary-deep);border:2px solid var(--primary);box-shadow:0 8px 22px rgba(255,93,143,.2)}
.btn-light:hover{transform:translateY(-3px);background:var(--primary-soft);box-shadow:0 14px 30px rgba(255,93,143,.3)}
.btn-sm{padding:9px 20px;font-size:14px}
.btn-lg{padding:16px 38px;font-size:17px}

/* ---------- 导航栏 ---------- */
.nav{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.nav-inner{display:flex;align-items:center;gap:26px;height:var(--nav-h)}
.logo{display:inline-flex;align-items:center;gap:8px;font-size:22px;font-weight:800;color:var(--dark)}
.logo span,.hero-copy h1 em,.dl-inner h1 em{
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-menu a{
  padding:8px 10px;font-size:14px;font-weight:500;color:var(--text);
  border-radius:8px;transition:color .2s,background .2s;
}
.nav-menu a:hover,.nav-menu a.active{color:var(--primary-deep);background:var(--primary-soft)}
.nav-dl{margin-left:8px;flex-shrink:0}

/* ---------- Hero ---------- */
.hero{
  background:
    radial-gradient(720px 420px at 82% 12%,rgba(255,93,143,.12),transparent 60%),
    radial-gradient(640px 400px at 8% 88%,rgba(183,140,255,.14),transparent 60%),
    linear-gradient(180deg,#FFF7FB 0%,var(--bg) 100%);
  padding:72px 0 90px;
}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-copy h1{font-size:52px;line-height:1.2;color:var(--dark);font-weight:900;margin:18px 0 16px}
.hero-copy h1 em{font-style:normal}
.hero-desc{font-size:17px;color:var(--muted);max-width:520px;margin-bottom:26px}
.hero-persona{display:flex;align-items:center;gap:14px;margin-bottom:28px;flex-wrap:wrap}
.avatar-stack{display:flex;align-items:center}
.avatar-stack img{
  width:44px;height:44px;border-radius:50%;object-fit:cover;
  border:2px solid #fff;box-shadow:0 4px 12px rgba(255,93,143,.25);
  margin-left:-10px;
}
.avatar-stack img:first-child{margin-left:0}
.avatar-more{
  width:44px;height:44px;border-radius:50%;margin-left:-10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--grad);
  color:#fff;font-size:20px;font-weight:700;
  border:2px solid #fff;box-shadow:0 4px 12px rgba(255,93,143,.25);
}
.hero-persona p{font-size:13.5px;color:var(--muted)}
.hero-note{font-size:13px;color:var(--muted);margin-top:14px}

/* 聊天窗口 */
.chat-card{
  background:#fff;border-radius:24px;box-shadow:var(--shadow-hover);
  border:1px solid var(--border);overflow:hidden;max-width:400px;width:100%;
  margin:0 auto;justify-self:center;
}
.chat-head{display:flex;align-items:center;gap:12px;padding:14px 18px;border-bottom:1px solid var(--border)}
.chat-head img{width:40px;height:40px;border-radius:50%;object-fit:cover}
.chat-head-info{flex:1;display:flex;flex-direction:column;line-height:1.35}
.chat-head-info strong{font-size:15px;color:var(--dark)}
.chat-head-info span{font-size:12px;color:var(--muted);display:inline-flex;align-items:center;gap:4px}
.dot{width:8px;height:8px;border-radius:50%;background:#2BD576;display:inline-block;box-shadow:0 0 0 3px rgba(43,213,118,.18)}
.chat-body{background:var(--bg-soft);padding:18px 14px;height:368px;overflow-y:auto;display:flex;flex-direction:column;gap:14px}
.msg{display:flex;align-items:flex-end;gap:8px;max-width:85%}
.msg img{width:30px;height:30px;border-radius:50%;object-fit:cover;flex-shrink:0}
.msg.user{align-self:flex-end;flex-direction:row-reverse}
.bubble{
  padding:10px 14px;border-radius:16px;font-size:14px;line-height:1.6;
  box-shadow:0 2px 8px rgba(51,38,63,.06);
}
.msg.ai .bubble{background:#fff;color:var(--text);border-top-left-radius:4px}
.msg.user .bubble{background:var(--grad);color:#fff;border-top-right-radius:4px}
.typing{display:flex;align-items:center;gap:8px}
.tdots{background:#fff;border-radius:16px;border-top-left-radius:4px;padding:12px 16px;display:inline-flex;gap:5px;box-shadow:0 2px 8px rgba(51,38,63,.06)}
.tdots i{width:6px;height:6px;border-radius:50%;background:var(--primary);opacity:.4;animation:td 1.2s infinite}
.tdots i:nth-child(2){animation-delay:.2s}
.tdots i:nth-child(3){animation-delay:.4s}
@keyframes td{0%,60%,100%{opacity:.3;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}
.chat-input{display:flex;align-items:center;gap:10px;padding:12px 14px;border-top:1px solid var(--border)}
.chat-input input{
  flex:1;background:var(--bg-soft);border-radius:999px;padding:10px 16px;
  font-size:14px;color:var(--text);
}
.chat-input button{
  width:40px;height:40px;border-radius:50%;flex-shrink:0;
  background:var(--grad);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(255,93,143,.35);
  transition:transform .2s;
}
.chat-input button:hover{transform:scale(1.08)}

/* ---------- 三步上手 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.step-card{
  position:relative;padding:36px 30px;overflow:hidden;
}
.step-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.step-num{
  position:absolute;top:18px;right:22px;
  font-size:44px;font-weight:900;color:var(--primary-soft);line-height:1;
}
.step-card h3{font-size:20px;color:var(--dark);margin-bottom:10px}
.step-card p{font-size:15px;color:var(--muted)}

/* ---------- 通用卡片（圆角 + 边框 + hover 上浮） ---------- */
.step-card,.feat-card,.persona-card,.review-card,.priv-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  transition:transform .3s,box-shadow .3s;
}
.feat-card,.persona-card,.review-card,.priv-card{padding:30px 24px}
.feat-card:hover,.persona-card:hover,.review-card:hover,.priv-card:hover{
  transform:translateY(-6px);box-shadow:var(--shadow-hover);
}

/* ---------- 产品介绍 ---------- */
.intro-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:center}
.intro-media{display:flex;justify-content:center}
.intro-phone{width:300px;border-radius:26px;box-shadow:var(--shadow-hover);border:1px solid var(--border)}
.intro-copy h2{font-size:34px;line-height:1.4;color:var(--dark);margin:14px 0 16px;font-weight:800}
.intro-copy>p{color:var(--muted);font-size:16px;margin-bottom:22px}
.intro-points li{
  display:flex;align-items:center;gap:10px;
  padding:13px 16px;margin-bottom:10px;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;color:var(--dark);
}
.ic{width:18px;height:18px;flex-shrink:0}

/* ---------- 核心功能 ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feat-icon{
  width:52px;height:52px;border-radius:16px;
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.icon-pink{background:var(--primary-soft)}
.icon-violet{background:var(--accent-soft)}
.icon-peach{background:#FFF1E9}
.icon-blue{background:#EBF5FF}
.feat-card h3{font-size:19px;color:var(--dark);margin-bottom:10px}
.pain{
  font-size:14px;color:#8A5CF6;background:var(--accent-soft);
  border-radius:8px;padding:8px 10px;margin-bottom:12px;line-height:1.6;
}
.feat-card>p:last-child{font-size:14.5px;color:var(--muted)}

/* ---------- 优势对比 ---------- */
.cmp-list{display:flex;flex-direction:column;gap:16px;max-width:960px;margin:0 auto}
.cmp-row{
  display:grid;grid-template-columns:150px 1fr 1fr;gap:14px;
  align-items:center;background:var(--card);
  border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;
  transition:transform .3s,box-shadow .3s;
}
.cmp-row:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.cmp-dim{font-size:16px;font-weight:800;color:var(--dark)}
.cmp-cell{border-radius:var(--radius-sm);padding:12px 16px;display:flex;flex-direction:column;gap:2px}
.cmp-cell b{font-size:15px;font-weight:800}
.cmp-cell span{font-size:13.5px;line-height:1.5}
.cmp-cell.good{background:var(--primary-soft);color:var(--primary-deep);border:1px solid #FFD3E3}
.cmp-cell.bad{background:#F5F3F8;color:var(--muted);border:1px solid #E8E4EF}
.cmp-cell.bad b{color:#8B829C}

/* ---------- 使用场景 ---------- */
.scene-list{
  display:grid;grid-template-columns:repeat(2,1fr);gap:14px;
  max-width:960px;margin:0 auto 40px;
}
.scene-list li{
  display:flex;align-items:center;gap:12px;
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-sm);padding:16px 18px;
  font-size:15.5px;font-weight:600;color:var(--dark);
  transition:transform .25s,box-shadow .25s;
}
.scene-list li:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.vs-banner{
  display:flex;align-items:center;justify-content:center;gap:26px;
  background:linear-gradient(135deg,var(--primary-soft),var(--accent-soft));
  border:1px solid var(--border);border-radius:var(--radius);
  padding:30px 34px;max-width:960px;margin:0 auto;
}
.vs-side{flex:1;text-align:center;padding:22px 18px;border-radius:var(--radius-sm)}
.vs-side span{font-size:18px;font-weight:800;display:block;margin-bottom:8px}
.vs-side p{font-size:14px;color:var(--muted)}
.vs-lose{background:#fff;border:1px dashed #D8CFE6}
.vs-lose span{color:#8B829C}
.vs-win{background:var(--grad);box-shadow:var(--shadow-hover)}
.vs-win span{color:#fff}
.vs-win p{color:rgba(255,255,255,.9)}
.vs-arrow{flex-shrink:0}

/* ---------- 数据 ---------- */
.stats{
  background:var(--grad);
  padding:90px 0;
}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.stat-card{
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);
  border-radius:var(--radius);padding:32px 20px;text-align:center;
  transition:transform .3s,background .3s;
}
.stat-card:hover{transform:translateY(-5px);background:rgba(255,255,255,.22)}
.stat-card strong{
  display:block;font-size:40px;font-weight:900;color:#fff;line-height:1.2;margin-bottom:6px;
}
.stat-card span{font-size:14.5px;color:rgba(255,255,255,.88)}

/* ---------- 人设 ---------- */
.persona-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:44px}
.persona-card{padding:34px 24px 28px;text-align:center}
.persona-card img{
  width:96px;height:96px;border-radius:50%;object-fit:cover;margin:0 auto 16px;
  box-shadow:0 8px 20px rgba(255,93,143,.22);
}
.persona-card h3{font-size:20px;color:var(--dark);font-weight:800}
.ptag{
  display:inline-block;margin:6px 0 10px;padding:3px 12px;
  background:var(--accent-soft);color:#8A5CF6;font-size:13px;font-weight:600;border-radius:999px;
}
.persona-card p{font-size:14px;color:var(--muted)}
.persona-card.custom{border:1px dashed var(--primary)}
.persona-card.custom .ptag{background:var(--primary-soft);color:var(--primary-deep)}
.custom-box{
  display:flex;align-items:center;gap:40px;
  background:linear-gradient(135deg,var(--primary-soft),var(--accent-soft));
  border:1px solid var(--border);border-radius:var(--radius);
  padding:40px 44px;
}
.custom-text{flex:1.2}
.custom-text h3{font-size:26px;color:var(--dark);font-weight:800;margin-bottom:12px}
.custom-text p{color:var(--muted);font-size:15px;margin-bottom:20px}
.custom-feats{flex:1;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.custom-feats span{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:14px;font-size:14px;font-weight:700;color:var(--dark);
  display:flex;align-items:center;gap:10px;
}
.custom-feats i{
  font-style:normal;width:26px;height:26px;border-radius:8px;flex-shrink:0;
  background:var(--grad);
  color:#fff;font-size:12px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
}

/* ---------- 用户评价 ---------- */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review-card{padding:26px 24px}
.rv-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.rv-avatar{
  width:46px;height:46px;border-radius:50%;flex-shrink:0;
  background:var(--grad);
  color:#fff;font-size:19px;font-weight:800;
  display:inline-flex;align-items:center;justify-content:center;
}
.rv-meta{display:flex;flex-direction:column;line-height:1.4}
.rv-meta b{font-size:15.5px;color:var(--dark)}
.rv-meta span{font-size:13px;color:#FFB45C;letter-spacing:2px}
.review-card>p{font-size:14.5px;color:var(--text)}

/* ---------- 隐私 ---------- */
.priv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.priv-card{padding:30px 26px}
.priv-icon{
  width:50px;height:50px;border-radius:14px;margin-bottom:16px;
  background:var(--primary-soft);
  display:inline-flex;align-items:center;justify-content:center;
}
.priv-card h3{font-size:18px;color:var(--dark);margin-bottom:8px}
.priv-card p{font-size:14.5px;color:var(--muted)}

/* ---------- 版本更新 ---------- */
.update-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:stretch}
.ver-card{
  background:linear-gradient(150deg,var(--dark) 0%,#4A3A63 100%);
  border-radius:var(--radius);padding:46px 40px;color:#fff;
  display:flex;flex-direction:column;justify-content:center;position:relative;overflow:hidden;
}
.ver-card::after{
  content:"";position:absolute;right:-60px;top:-60px;width:200px;height:200px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,93,143,.35),transparent 70%);
}
.ver-card .sec-tag{background:rgba(255,255,255,.16);color:#FFD7E6}
.ver-card h2{font-size:26px;font-weight:800;margin:14px 0 4px}
.ver-num,.logo-light span{
  background:linear-gradient(135deg,#FF9DBB,#D9B8FF);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.ver-num{font-size:52px;font-weight:900;line-height:1.1}
.ver-card p{color:rgba(255,255,255,.8);font-size:15px;margin:10px 0 16px}
.ver-badge{
  align-self:flex-start;padding:6px 14px;border-radius:999px;
  background:var(--grad);
  font-size:13px;font-weight:700;
}
.log-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:40px 36px;
}
.log-card h3{font-size:20px;color:var(--dark);margin-bottom:20px;font-weight:800}
.log-card li{
  position:relative;padding:10px 0 10px 26px;
  font-size:15px;color:var(--text);border-bottom:1px dashed var(--border);
}
.log-card li:last-child{border-bottom:none}
.log-card li i{
  position:absolute;left:0;top:19px;width:8px;height:8px;border-radius:50%;
  background:var(--grad);
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px}
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;transition:box-shadow .3s;
}
.faq-item[open]{box-shadow:var(--shadow)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:700;color:var(--dark);
  cursor:pointer;list-style:none;user-select:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex-shrink:0;width:30px;height:30px;border-radius:50%;
  background:var(--primary-soft);color:var(--primary-deep);
  font-size:20px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
  transition:transform .3s,background .3s;
}
.faq-item[open] summary::after{transform:rotate(45deg);background:var(--grad);color:#fff}
.faq-item summary:hover{color:var(--primary-deep)}
.faq-item>p{padding:0 24px 22px;color:var(--muted);font-size:15px}

/* ---------- 下载区域 ---------- */
.download{
  background:
    radial-gradient(560px 320px at 20% 20%,rgba(255,93,143,.14),transparent 60%),
    radial-gradient(560px 320px at 80% 80%,rgba(183,140,255,.16),transparent 60%),
    var(--bg-soft);
}
.dl-inner{text-align:center;max-width:760px}
.dl-inner h1{font-size:46px;color:var(--dark);font-weight:900;margin:18px 0 10px}
.dl-inner h1 em{font-style:normal}
.dl-meta{font-size:14.5px;color:var(--muted);margin-bottom:34px}
.dl-btns{display:flex;justify-content:center;gap:20px;flex-wrap:wrap;margin-bottom:26px}
.dl-tip{font-size:15px;color:var(--muted)}

/* ---------- 页脚 ---------- */
.footer{background:var(--dark);color:rgba(255,255,255,.75);padding:52px 0 40px}
.footer-inner{display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center}
.logo-light{font-size:20px;color:#fff}
.footer-inner>p{font-size:14px}
.footer-copy{display:flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.55)}
.footer-copy a{color:#FF9DBB}
.footer-copy a:hover{color:#fff}

/* ---------- 返回顶部 ---------- */
.top-btn{
  position:fixed;right:26px;bottom:26px;z-index:99;
  width:48px;height:48px;border-radius:50%;
  background:var(--grad);
  box-shadow:0 10px 24px rgba(255,93,143,.4);
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s,transform .3s,visibility .3s;
}
.top-btn.show{opacity:1;visibility:visible;transform:translateY(0)}
.top-btn:hover{transform:translateY(-3px)}

:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none;animation:none}
}

/* ============ 平板 (<=1100px) ============ */
@media (max-width:1100px){
  .nav-menu{display:none}
  .nav-dl{margin-left:auto}
  .hero-inner{grid-template-columns:1fr 1fr;gap:40px}
  .hero-copy h1{font-size:42px}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .persona-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .priv-grid{grid-template-columns:repeat(2,1fr)}
}

/* ============ 手机 (<=768px) ============ */
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:64px 0}
  .nav-inner{height:60px;gap:12px}
  .logo{font-size:19px}
  .logo svg{width:22px;height:22px}
  .btn-sm{padding:10px 20px;font-size:13.5px}
  .hero{padding:40px 0 56px}
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-copy{text-align:center;display:flex;flex-direction:column;align-items:center}
  .hero-copy h1{font-size:36px}
  .hero-desc{font-size:15.5px}
  .hero-persona{justify-content:center}
  .chat-input input{font-size:16px}
  .hero-persona p{font-size:14px;width:100%}
  .btn-lg{padding:15px 32px;font-size:16px;width:100%;max-width:420px}
  .dl-tip{font-size:14px}
  .top-btn{right:16px;bottom:16px;width:44px;height:44px}
  .chat-card{max-width:420px}
  .chat-body{height:340px}
  .cmp-cell span{font-size:14px}
  .sec-head h2{font-size:27px}
  .steps{grid-template-columns:1fr;gap:16px}
  .intro-grid{grid-template-columns:1fr;gap:36px}
  .intro-phone{width:240px}
  .intro-copy h2{font-size:27px}
  .feat-grid{grid-template-columns:1fr;gap:16px}
  .cmp-row{grid-template-columns:1fr;gap:10px}
  .cmp-dim{padding:2px 0 2px 4px;font-size:15px}
  .scene-list{grid-template-columns:1fr;gap:12px}
  .vs-banner{flex-direction:column;gap:18px;padding:26px 20px}
  .vs-arrow{transform:rotate(90deg)}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .stat-card strong{font-size:32px}
  .stats{padding:64px 0}
  .persona-grid{grid-template-columns:1fr;gap:16px}
  .persona-card{padding:28px 20px 24px}
  .custom-box{flex-direction:column;gap:26px;padding:30px 24px}
  .custom-feats{width:100%;grid-template-columns:1fr 1fr}
  .custom-text h3{font-size:22px}
  .review-grid{grid-template-columns:1fr;gap:16px}
  .priv-grid{grid-template-columns:1fr;gap:16px}
  .update-grid{grid-template-columns:1fr;gap:20px}
  .ver-card{padding:36px 28px}
  .ver-num{font-size:44px}
  .log-card{padding:28px 22px}
  .faq-item summary{font-size:15px;padding:17px 18px}
  .faq-item>p{padding:0 18px 18px}
  .dl-inner h1{font-size:34px}
  .dl-meta{font-size:12px;white-space:nowrap;margin-bottom:28px}
  .dl-btns{flex-direction:column;gap:14px;align-items:center}
  .dl-btns .btn{width:100%;max-width:360px}
}