/* ============ lovemo 官网落地页样式 ============ */
: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;
  --gold:#FFB800;
  --radius:18px;
  --shadow:0 10px 30px rgba(240,61,116,.08);
  --shadow-hover:0 18px 42px rgba(240,61,116,.16);
  --grad:linear-gradient(90deg,var(--primary),var(--primary-deep));
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:78px}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
.sec{padding:88px 0}

/* 区块标题 */
.sec-head{text-align:center;max-width:760px;margin:0 auto 50px}
.sec-tag{display:inline-block;background:var(--primary-soft);color:var(--primary-deep);font-size:13px;font-weight:600;padding:6px 18px;border-radius:999px}
.sec-head h2{font-size:34px;line-height:1.3;color:var(--deep);margin:18px 0 12px}
.sec-head p{color:var(--muted);font-size:15px}

/* 通用按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--grad);color:#fff;border:0;cursor:pointer;
  border-radius:999px;font-weight:600;font-size:15px;
  padding:14px 30px;transition:transform .25s,box-shadow .25s;
  box-shadow:var(--shadow);
}
.btn:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.btn-lg{font-size:17px;padding:16px 38px;min-height:52px}

/* 顶部导航 */
.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:border-color .25s,box-shadow .25s;
}
.nav.scrolled{border-color:var(--border);box-shadow:0 6px 20px rgba(240,61,116,.06)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-size:26px;font-weight:800;color:var(--primary-deep);letter-spacing:.5px;display:flex;align-items:center;gap:8px}
.logo svg{flex:none}
.nav-links{display:flex;gap:34px}
.nav-links a{font-size:15px;color:var(--text);font-weight:500;position:relative;padding:6px 0;transition:color .2s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--grad);border-radius:2px;transition:width .25s}
.nav-links a:hover{color:var(--primary-deep)}
.nav-links a:hover::after{width:100%}
.nav-dl{font-size:13px;padding:9px 18px;min-height:36px}

/* Hero */
.hero{
  padding:150px 0 90px;
  background:
    radial-gradient(640px 320px at 88% 8%,rgba(255,92,138,.14),transparent 60%),
    radial-gradient(560px 300px at 4% 90%,rgba(240,61,116,.10),transparent 60%),
    linear-gradient(180deg,var(--primary-soft),var(--bg) 70%);
}
.hero-inner{display:grid;grid-template-columns:1.04fr .96fr;gap:56px;align-items:center}
.hero h1{font-size:46px;line-height:1.28;color:var(--deep);font-weight:800}
.v-badge{
  display:inline-block;vertical-align:middle;margin-left:10px;
  background:var(--grad);color:#fff;font-size:13px;font-weight:700;
  padding:4px 14px;border-radius:999px;letter-spacing:.5px;
}
.hero-desc{font-size:17px;color:var(--muted);margin:22px 0 30px;max-width:520px}
.hero-cta{margin-bottom:26px}
.hero-note{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:6px}
.hero-note svg{color:var(--green)}

/* 聊天窗口 */
.chat{
  background:#fff;border:1px solid var(--border);border-radius:22px;
  box-shadow:var(--shadow);overflow:hidden;max-width:420px;width:100%;margin:0 auto;
}
.chat-head{
  display:flex;align-items:center;gap:12px;padding:13px 16px;
  background:var(--bg-soft);border-bottom:1px solid var(--border);
}
.chat-head img{width:46px;height:46px;border-radius:50%;object-fit:cover;border:2px solid #fff;box-shadow:var(--shadow)}
.chat-id{flex:1;min-width:0}
.chat-name{font-size:15px;font-weight:700;color:var(--deep);line-height:1.3}
.chat-status{font-size:12px;color:var(--green);display:flex;align-items:center;gap:5px;line-height:1.4}
.chat-status::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px rgba(46,197,126,.18)}
.chat-body{
  padding:16px;height:340px;overflow-y:auto;
  display:flex;flex-direction:column;gap:12px;
  scrollbar-width:thin;scrollbar-color:var(--border) transparent;
}
.chat-body::-webkit-scrollbar{width:5px}
.chat-body::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
.msg-line{display:flex;align-items:flex-end;gap:8px;max-width:88%}
.msg-line img{width:28px;height:28px;border-radius:50%;object-fit:cover;flex:none}
.msg{max-width:78%;padding:10px 14px;border-radius:16px;font-size:14px;line-height:1.55;word-break:break-word}
.msg.ai{align-self:flex-start;background:var(--primary-soft);color:var(--text);border-bottom-left-radius:4px}
.msg.me{align-self:flex-end;background:var(--grad);color:#fff;border-bottom-right-radius:4px;box-shadow:var(--shadow)}
.chat-foot{display:flex;align-items:center;gap:10px;padding:12px 14px;border-top:1px solid var(--border);background:#fff}
.chat-input{
  flex:1;height:44px;border:1px solid var(--border);border-radius:999px;
  padding:0 18px;font-size:14px;color:var(--text);background:var(--bg-soft);
  outline:none;transition:border-color .2s;
}
.chat-input:focus{border-color:var(--primary)}
.chat-send{
  width:44px;height:44px;flex:none;border:0;border-radius:50%;
  background:var(--grad);color:#fff;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:transform .2s,box-shadow .2s,background .3s;
}
.chat-send:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.chat-send.disabled{background:#D9CDD8;cursor:not-allowed;box-shadow:none;transform:none}

/* Hero 人设挑选 */
.persona-strip{margin-top:64px;text-align:center}
.persona-strip .strip-title{font-size:15px;color:var(--text);font-weight:600;margin-bottom:22px}
.persona-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.persona-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:22px 10px 16px;text-align:center;
  transition:transform .25s,box-shadow .25s;
}
.persona-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.persona-card img{width:96px;height:96px;border-radius:50%;object-fit:cover;margin:0 auto 12px;border:3px solid var(--primary-soft)}
.persona-name{font-size:15px;font-weight:700;color:var(--deep);line-height:1.3}
.persona-type{font-size:12px;color:var(--muted);margin-top:3px}
.persona-card.custom{border-style:dashed;border-color:var(--primary)}
.persona-card.custom .free-tag{
  display:inline-block;margin-bottom:10px;background:var(--primary-soft);
  color:var(--primary-deep);font-size:12px;font-weight:600;padding:3px 12px;border-radius:999px;
}
.persona-card.custom img{border-color:var(--border)}

/* 三步上手 */
.steps{background:var(--bg-soft)}
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:36px 30px;transition:transform .25s,box-shadow .25s;
}
.step-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.step-ico{
  width:58px;height:58px;border-radius:16px;background:var(--primary-soft);
  color:var(--primary-deep);display:flex;align-items:center;justify-content:center;margin-bottom:20px;
}
.step-ico svg{width:28px;height:28px}
.step-card h3{font-size:19px;color:var(--deep);margin-bottom:10px}
.step-card p{font-size:14px;color:var(--muted)}

/* 产品介绍 */
.intro-wrap{display:grid;grid-template-columns:1fr 1.1fr;gap:64px;align-items:center}
.intro-media img{border-radius:24px;box-shadow:var(--shadow);width:100%;max-width:480px;margin:0 auto}
.intro-copy h2{font-size:32px;color:var(--deep);line-height:1.35;margin-bottom:18px}
.intro-copy p{font-size:15px;color:var(--muted);margin-bottom:16px}
.intro-points{margin-top:26px;display:flex;flex-direction:column;gap:14px}
.intro-points li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--text);font-weight:500}
.intro-points .ck{
  flex:none;width:22px;height:22px;border-radius:50%;background:var(--grad);
  color:#fff;display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.intro-points .ck svg{width:13px;height:13px}

/* 四大核心功能 */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.feat-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:30px 26px;transition:transform .25s,box-shadow .25s;
}
.feat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.feat-ico{
  width:52px;height:52px;border-radius:14px;background:var(--primary-soft);
  color:var(--primary-deep);display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.feat-ico svg{width:26px;height:26px}
.feat-card h3{font-size:18px;color:var(--deep);margin-bottom:8px}
.feat-pain{font-size:13px;color:var(--primary-deep);background:var(--bg-soft);border-radius:8px;padding:6px 10px;margin-bottom:12px;display:inline-block;font-weight:500}
.feat-desc{font-size:14px;color:var(--muted)}

/* 优势对比 */
.compare-wrap{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
}
.compare-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:thin}
.compare-scroll::-webkit-scrollbar{height:6px}
.compare-scroll::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
table.compare{width:100%;min-width:680px;border-collapse:collapse;table-layout:fixed}
table.compare th,.compare td{padding:15px 16px;font-size:14px;text-align:center;border-top:1px solid var(--border)}
table.compare th{background:var(--bg-soft);color:var(--deep);font-weight:600}
table.compare th:first-child,table.compare td:first-child{text-align:left;color:var(--deep);font-weight:600}
table.compare th.love{background:var(--grad);color:#fff}
table.compare td.love{background:var(--primary-soft)}
table.compare tr:first-child th{border-top:0}
.compare-hint{display:none}

/* 使用场景 */
.scene-list{
  max-width:760px;margin:0 auto 56px;
  display:flex;flex-direction:column;gap:14px;
}
.scene-list li{
  display:flex;align-items:center;gap:12px;background:var(--card);
  border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);
  padding:15px 22px;font-size:15px;color:var(--text);font-weight:500;
  transition:transform .25s,box-shadow .25s;
}
.scene-list li:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.scene-list .ck{
  flex:none;width:24px;height:24px;border-radius:50%;background:var(--grad);
  color:#fff;display:flex;align-items:center;justify-content:center;
}
.scene-list .ck svg{width:14px;height:14px}
.vs-wrap{display:grid;grid-template-columns:1fr auto 1fr;gap:26px;align-items:stretch;max-width:900px;margin:0 auto}
.vs-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:34px 30px;transition:transform .25s,box-shadow .25s;
}
.vs-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.vs-card h3{font-size:20px;color:var(--deep);margin-bottom:18px;display:flex;align-items:center;gap:10px}
.vs-card h3 svg{width:22px;height:22px;color:var(--primary)}
.vs-card.right h3 svg{color:var(--green)}
.vs-card ul{display:flex;flex-direction:column;gap:12px}
.vs-card li{font-size:14px;color:var(--muted);padding-left:22px;position:relative;line-height:1.6}
.vs-card li::before{
  content:"";position:absolute;left:2px;top:9px;width:7px;height:7px;border-radius:50%;
}
.vs-card.left li::before{background:#B9A8C8}
.vs-card.right li::before{background:var(--green)}
.vs-badge{
  width:56px;height:56px;border-radius:50%;background:var(--grad);color:#fff;
  font-size:15px;font-weight:800;letter-spacing:1px;
  display:flex;align-items:center;justify-content:center;
  align-self:center;box-shadow:var(--shadow-hover);
}

/* 数据模块 */
.data{background:var(--deep);position:relative;overflow:hidden}
.data::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(560px 320px at 15% 10%,rgba(255,92,138,.22),transparent 60%),
             radial-gradient(480px 300px at 85% 90%,rgba(240,61,116,.16),transparent 60%);
}
.data .sec-head h2{color:#fff}
.data .sec-head p{color:#C9BCD8}
.data-grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.data-item{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius);padding:34px 20px;text-align:center;
}
.data-item .num{
  font-size:40px;font-weight:800;color:#fff;line-height:1.2;
  background:linear-gradient(90deg,#FF8FB0,var(--primary));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.data-item span{display:block;font-size:14px;color:#C9BCD8;margin-top:8px}

/* 人设定制 */
.custom-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
.custom-media img{border-radius:24px;box-shadow:var(--shadow);width:100%;max-width:480px;margin:0 auto}
.custom-copy h2{font-size:32px;color:var(--deep);line-height:1.35;margin-bottom:18px}
.custom-copy p{font-size:15px;color:var(--muted);margin-bottom:22px}
.custom-chips{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
.custom-chips span{
  background:var(--card);border:1px solid var(--border);border-radius:999px;
  padding:8px 18px;font-size:14px;color:var(--text);font-weight:500;box-shadow:var(--shadow);
}
.custom-chips span b{color:var(--primary-deep);font-weight:700}

/* 用户评价 */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:26px 24px;transition:transform .25s,box-shadow .25s;
}
.review-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.rev-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.rev-avatar{
  width:44px;height:44px;border-radius:50%;color:#fff;font-size:17px;font-weight:700;
  display:flex;align-items:center;justify-content:center;flex:none;
}
.rev-name{font-size:15px;font-weight:700;color:var(--deep)}
.rev-stars{font-size:13px;color:var(--gold);letter-spacing:2px;margin-top:2px}
.rev-text{font-size:14px;color:var(--muted);line-height:1.7}

/* 隐私安全 */
.privacy{background:var(--bg-soft)}
.priv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.priv-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:30px 26px;transition:transform .25s,box-shadow .25s;
}
.priv-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.priv-ico{
  width:52px;height:52px;border-radius:14px;background:var(--primary-soft);
  color:var(--primary-deep);display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.priv-ico svg{width:26px;height:26px}
.priv-card h3{font-size:17px;color:var(--deep);margin-bottom:10px}
.priv-card p{font-size:13.5px;color:var(--muted)}

/* 版本更新 */
.ver-wrap{max-width:820px;margin:0 auto}
.ver-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:40px 38px;
  display:grid;grid-template-columns:220px 1fr;gap:36px;align-items:start;
}
.ver-no{
  background:var(--grad);color:#fff;border-radius:var(--radius);
  padding:28px 18px;text-align:center;box-shadow:var(--shadow-hover);
}
.ver-no b{display:block;font-size:30px;font-weight:800;letter-spacing:.5px}
.ver-no span{display:inline-block;margin-top:10px;font-size:13px;background:rgba(255,255,255,.22);border-radius:999px;padding:5px 14px}
.ver-list{display:flex;flex-direction:column;gap:14px}
.ver-list li{
  display:flex;gap:12px;font-size:14.5px;color:var(--text);line-height:1.6;
  padding:12px 16px;background:var(--bg);border:1px solid var(--border);border-radius:12px;
}
.ver-list .dot{flex:none;width:8px;height:8px;border-radius:50%;background:var(--grad);margin-top:9px}

/* FAQ */
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:14px;
  box-shadow:var(--shadow);overflow:hidden;transition:box-shadow .25s;
}
.faq-item.open{box-shadow:var(--shadow-hover);border-color:var(--primary)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;cursor:pointer;text-align:left;
  padding:19px 22px;font-size:15.5px;font-weight:600;color:var(--deep);
}
.faq-q .arr{flex:none;width:26px;height:26px;border-radius:50%;background:var(--primary-soft);color:var(--primary-deep);display:flex;align-items:center;justify-content:center;transition:transform .3s}
.faq-q .arr svg{width:14px;height:14px}
.faq-item.open .faq-q .arr{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 22px 20px;font-size:14px;color:var(--muted);line-height:1.8}

/* 下载区域 */
.download{
  background:
    radial-gradient(620px 340px at 50% 0%,rgba(255,92,138,.16),transparent 62%),
    linear-gradient(180deg,var(--primary-soft),var(--bg));
  padding:96px 0;text-align:center;
}
.dl-head h1{font-size:40px;color:var(--deep);font-weight:800;line-height:1.3}
.dl-meta{font-size:14px;color:var(--muted);margin:16px 0 34px}
.dl-meta span{background:var(--card);border:1px solid var(--border);border-radius:999px;padding:6px 16px;box-shadow:var(--shadow);white-space:nowrap}
.dl-btns{display:flex;justify-content:center;gap:20px;flex-wrap:wrap}
.btn-dl{min-width:250px;min-height:54px;font-size:16px}
.dl-note{
  margin-top:26px;font-size:14px;color:var(--text);background:var(--card);
  border:1px solid var(--border);border-radius:999px;padding:10px 24px;
  display:inline-flex;align-items:center;gap:8px;box-shadow:var(--shadow);
}

/* 页脚 */
.footer{background:var(--deep);padding:34px 0;text-align:center}
.footer-inner{color:#C9BCD8;font-size:14px}
.footer-inner a{color:#fff;font-weight:700;text-decoration:none}
.footer-inner a:hover{opacity:.85}

/* 返回顶部 */
.back-top{
  position:fixed;right:28px;bottom:32px;z-index:90;
  width:48px;height:48px;border-radius:50%;border:0;cursor:pointer;
  background:var(--grad);color:#fff;box-shadow:var(--shadow-hover);
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s,transform .3s,visibility .3s;
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top svg{width:20px;height:20px}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .sec{padding:72px 0}
  .persona-grid{grid-template-columns:repeat(3,1fr)}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .priv-grid{grid-template-columns:repeat(2,1fr)}
  .data-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .hero h1{font-size:38px}
  .sec-head h2{font-size:29px}
}
@media (max-width:900px){
  .nav-links{display:none}
  .hero{padding:118px 0 72px}
  .hero-inner{grid-template-columns:1fr;gap:44px}
  .hero-copy{text-align:center}
  .hero-desc{margin-left:auto;margin-right:auto}
  .hero-cta{justify-content:center;display:flex}
  .hero-note{justify-content:center}
  .intro-wrap{grid-template-columns:1fr;gap:36px}
  .custom-wrap{grid-template-columns:1fr;gap:36px}
  .intro-media,.custom-media{order:-1}
  .vs-wrap{grid-template-columns:1fr;gap:22px}
  .vs-badge{justify-self:center}
  .ver-card{grid-template-columns:1fr;gap:28px}
  .sec-head h2{font-size:27px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .step-grid{grid-template-columns:1fr}
  .dl-btns{flex-direction:column;align-items:stretch}
  .dl-btns .btn-dl{width:100%}
  .dl-meta{font-size:12px}
  .dl-meta span{display:inline-block;margin:0 4px}
  .compare-hint{display:block;text-align:center;font-size:12px;color:var(--muted);margin-top:12px}
  .sec-head h2{font-size:25px}
}
@media (max-width:640px){
  .sec{padding:60px 0}
  .hero{padding:104px 0 60px}
  .hero h1{font-size:31px}
  .v-badge{font-size:12px;padding:3px 10px;margin-left:6px}
  .hero-desc{font-size:15px}
  .hero-cta .btn{width:100%}
  .btn-lg{font-size:16px;padding:15px 30px;min-height:50px}
  .nav-dl{min-height:44px}
  .persona-grid{gap:12px}
  .persona-card{padding:16px 6px 12px}
  .persona-card img{width:72px;height:72px}
  .persona-name{font-size:14px}
  .persona-type{font-size:12px}
  .feat-grid{grid-template-columns:1fr}
  .priv-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .chat-body{height:300px}
  .chat-name{font-size:14px}
  .chat-head img{width:40px;height:40px}
  .data-item .num{font-size:32px}
  .ver-no b{font-size:26px}
  .dl-head h1{font-size:30px}
  .btn-dl{min-width:0;font-size:15px}
  .back-top{right:16px;bottom:20px;width:44px;height:44px}
}