/* ===== nimoo 官网样式 ===== */
: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;
  --radius:18px;
  --shadow:0 10px 30px rgba(240,61,116,.08);
  --shadow-hover:0 18px 42px rgba(240,61,116,.16);
  --nav-h:68px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 12px)}
body{
  font-family:"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}

.wrap{max-width:1140px;margin:0 auto;padding:0 24px}

/* 卡片与按钮通用公式 */
.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)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(90deg,var(--primary),var(--primary-deep));
  color:#fff;border:0;cursor:pointer;font-weight:600;
  border-radius:999px;padding:12px 26px;font-size:15px;
  transition:transform .25s,box-shadow .25s;
  min-height:44px;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(240,61,116,.32)}
.btn-lg{font-size:17px;padding:15px 34px}
.btn-ghost{
  background:#fff;color:var(--primary-deep);
  border:2px solid var(--primary);
}
.btn-ghost:hover{box-shadow:0 14px 30px rgba(240,61,116,.18)}

.sec-title{font-size:34px;color:var(--deep);text-align:center;letter-spacing:.5px}
.sec-sub{text-align:center;color:var(--muted);margin:10px 0 44px}
section{padding:88px 0}

/* ===== 1. 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:box-shadow .25s,border-color .25s;
}
.nav.scrolled{box-shadow:0 8px 24px rgba(240,61,116,.12);border-color:var(--border)}
.nav-inner{
  height:var(--nav-h);
  display:flex;align-items:center;gap:28px;
}
.logo{
  font-size:26px;font-weight:800;letter-spacing:.5px;
  background:linear-gradient(90deg,var(--primary),var(--primary-deep));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  line-height:1.2;display:inline-flex;align-items:center;min-height:44px;
}
.nav-menu{display:flex;gap:26px;margin-left:auto}
.nav-menu a{
  font-size:15px;color:var(--text);padding:8px 2px;min-height:44px;
  display:inline-flex;align-items:center;position:relative;
  transition:color .2s;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:100%;bottom:6px;height:2px;
  background:var(--primary);border-radius:2px;transition:right .25s;
}
.nav-menu a:hover{color:var(--primary-deep)}
.nav-menu a:hover::after{right:0}
.nav-dl{margin-left:auto;padding:9px 20px;font-size:14px;min-height:44px}

/* ===== 2. Hero ===== */
.hero{
  padding:calc(var(--nav-h) + 56px) 0 88px;
  background:linear-gradient(160deg,var(--bg) 0%,var(--bg-soft) 55%,var(--primary-soft) 100%);
  overflow:hidden;
}
.hero-inner{
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.hero-title{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.hero-title h1{font-size:46px;color:var(--deep);line-height:1.25;letter-spacing:.5px}
.ver-badge{
  background:var(--primary-soft);color:var(--primary-deep);
  font-size:14px;font-weight:700;padding:5px 14px;border-radius:999px;
  border:1px solid var(--border);white-space:nowrap;
}
.hero-desc{margin:20px 0 26px;font-size:17px;color:var(--text);max-width:520px}

.personas-title{font-size:15px;font-weight:600;color:var(--muted);margin-bottom:14px}
.persona-list{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;max-width:520px}
.persona{text-align:center;display:flex;flex-direction:column;align-items:center}
.persona img{
  width:84px;height:84px;border-radius:50%;object-fit:cover;
  border:3px solid #fff;box-shadow:var(--shadow);
  transition:transform .25s;
}
.persona:hover img{transform:translateY(-4px)}
.persona span{display:block;margin-top:8px;font-size:14px;color:var(--text)}
.hero-dl{margin-top:28px}

/* 聊天窗口 */
.chat{
  background:#fff;border-radius:22px;border:1px solid var(--border);
  box-shadow:var(--shadow-hover);overflow:hidden;max-width:440px;width:100%;
  justify-self:center;
}
.chat-head{
  display:flex;align-items:center;gap:12px;
  padding:14px 18px;
  background:linear-gradient(120deg,var(--primary),var(--primary-deep));
}
.chat-avatar{
  width:46px;height:46px;border-radius:50%;object-fit:cover;
  border:2px solid rgba(255,255,255,.85);
}
.chat-meta{display:flex;flex-direction:column;line-height:1.4}
.chat-name{color:#fff;font-size:16px;font-weight:700}
.chat-status{color:rgba(255,255,255,.92);font-size:13px;display:flex;align-items:center;gap:5px}
.chat-status i{
  width:8px;height:8px;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:linear-gradient(180deg,#FFF5F9,#FFF0F6);
  display:flex;flex-direction:column;gap:12px;
}
.msg{
  max-width:82%;padding:11px 15px;border-radius:16px;
  font-size:14.5px;line-height:1.65;animation:msgIn .35s ease;
}
@keyframes msgIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.msg.ai{
  align-self:flex-start;background:#fff;color:var(--text);
  border:1px solid var(--border);border-bottom-left-radius:4px;
  box-shadow:var(--shadow);
}
.msg.user{
  align-self:flex-end;background:linear-gradient(120deg,var(--primary),var(--primary-deep));
  color:#fff;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;border:1px solid var(--border);background:var(--bg);
  border-radius:999px;padding:11px 18px;font-size:16px;color:var(--muted);
  outline:none;min-height:44px;user-select:none;
}
.send{
  border:0;background:linear-gradient(90deg,var(--primary),var(--primary-deep));
  color:#fff;font-size:14px;font-weight:600;border-radius:999px;
  padding:0 22px;min-height:44px;cursor:pointer;transition:opacity .25s,transform .25s;
}
.send:hover{transform:translateY(-2px)}
.send.disabled{background:#D9CDDA;cursor:not-allowed;transform:none}

/* ===== 3. 三步上手 ===== */
.steps{background:var(--bg)}
.step-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px}
.step{padding:34px 28px;text-align:left;position:relative}
.step-num{
  font-size:34px;font-weight:800;color:var(--primary-soft);
  -webkit-text-stroke:1px var(--primary);
  display:block;margin-bottom:12px;
}
.step h3{font-size:19px;color:var(--deep);margin-bottom:8px}
.step p{color:var(--muted);font-size:15px}

/* ===== 4. 产品介绍 ===== */
.intro{background:var(--bg-soft)}
.intro-grid,.custom-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.intro-img img,.custom-img img{
  width:100%;border-radius:var(--radius);
  border:1px solid var(--border);box-shadow:var(--shadow);
}
.intro-text .sec-title,.custom-text .sec-title{text-align:left;font-size:30px}
.intro-desc,.custom-desc{margin:18px 0 22px;color:var(--text);font-size:16px}
.check-list li{
  position:relative;padding-left:34px;margin-bottom:12px;font-size:15.5px;color:var(--text);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:4px;width:20px;height:20px;border-radius:50%;
  background:linear-gradient(120deg,var(--primary),var(--primary-deep));
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:9px;width:10px;height:5px;
  border-left:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(-45deg);
}

/* ===== 5. 四大核心功能 ===== */
.feature-list{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:44px}
.feature{padding:30px 24px}
.feat-icon{
  width:54px;height:54px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary-deep);
}
.feature h3{font-size:18px;color:var(--deep);margin:14px 0 10px}
.pain{font-size:14px;color:var(--primary-deep);background:var(--primary-soft);
  border-radius:10px;padding:7px 10px;margin-bottom:10px;line-height:1.5}
.feat-desc{font-size:14.5px;color:var(--muted)}

/* ===== 6. 优势对比 ===== */
.compare{background:var(--bg-soft)}
.table-wrap{overflow-x:auto;margin-top:44px;border-radius:var(--radius)}
.cmp-table{
  width:100%;min-width:640px;border-collapse:separate;border-spacing:0;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);
}
.cmp-table th,.cmp-table td{
  padding:15px 18px;font-size:14.5px;text-align:left;
  border-bottom:1px solid var(--border);white-space:nowrap;
}
.cmp-table thead th{
  background:var(--deep);color:#fff;font-size:15px;font-weight:600;
}
.cmp-table thead th.col-best{background:linear-gradient(120deg,var(--primary),var(--primary-deep))}
.cmp-table tbody tr:last-child th,.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table tbody th{color:var(--muted);font-weight:600;background:var(--bg)}
.cmp-table tbody td.col-best{
  color:var(--primary-deep);font-weight:600;background:var(--primary-soft);
}
.slide-hint{display:none;text-align:center;color:var(--muted);font-size:14px;margin-top:14px}

/* ===== 7. 使用场景 ===== */
.scene-list{
  display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:44px 0 52px;
}
.scene-list li{
  background:var(--card);border:1px solid var(--border);border-radius:14px;
  padding:15px 18px 15px 46px;font-size:15.5px;color:var(--text);
  box-shadow:var(--shadow);position:relative;
}
.scene-list li::before{
  content:"";position:absolute;left:18px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;border-radius:50%;
  background:linear-gradient(120deg,var(--primary),var(--primary-deep));
}
.scene-list li::after{
  content:"";position:absolute;left:22px;top:calc(50% - 4px);
  width:10px;height:5px;border-left:2px solid #fff;border-bottom:2px solid #fff;
  transform:rotate(-45deg);
}
.vs{display:grid;grid-template-columns:1fr auto 1fr;gap:26px;align-items:center}
.vs-card{padding:34px 30px}
.vs-card h3{font-size:20px;margin-bottom:12px}
.vs-bad{background:#FAF6F8}
.vs-bad h3{color:var(--muted)}
.vs-bad p{color:var(--muted);font-size:15px}
.vs-good{border:2px solid var(--primary);background:linear-gradient(160deg,#fff,var(--primary-soft))}
.vs-good h3{color:var(--primary-deep)}
.vs-good p{color:var(--text);font-size:15px}
.vs-arrow{
  width:58px;height:58px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(120deg,var(--primary),var(--primary-deep));color:#fff;
  font-weight:800;font-size:15px;box-shadow:var(--shadow-hover);
}

/* ===== 8. 数据模块 ===== */
.stats{background:var(--deep);position:relative;overflow:hidden}
.stats::before{
  content:"";position:absolute;left:-120px;top:-120px;width:340px;height:340px;
  border-radius:50%;background:rgba(255,92,138,.18);filter:blur(60px);
}
.stats::after{
  content:"";position:absolute;right:-120px;bottom:-120px;width:340px;height:340px;
  border-radius:50%;background:rgba(255,92,138,.14);filter:blur(60px);
}
.stats .wrap{position:relative;z-index:1}
.sec-title.light{color:#fff}
.stat-list{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:44px}
.stat{text-align:center}
.stat-num{
  display:block;font-size:52px;font-weight:800;line-height:1.2;
  background:linear-gradient(120deg,#FFB3CB,var(--primary));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-label{color:rgba(255,255,255,.75);font-size:15px;margin-top:8px;display:block}

/* ===== 9. 人设定制 ===== */
.custom-text .btn{margin-top:10px}

/* ===== 10. 用户评价 ===== */
.review-list{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}
.review{padding:26px 24px}
.rv-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.rv-avatar{
  width:48px;height:48px;border-radius:50%;flex:none;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#fff;font-size:19px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.rv-meta{display:flex;flex-direction:column;line-height:1.4}
.rv-name{font-size:15.5px;font-weight:600;color:var(--deep)}
.rv-stars{color:#FFB400;font-size:13px;letter-spacing:1px}
.rv-text{font-size:14.5px;color:var(--text)}

/* ===== 11. 隐私安全 ===== */
.privacy{background:var(--bg-soft)}
.privacy-list{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:44px}
.privacy-card{padding:30px 24px;text-align:center}
.privacy-card h3{font-size:18px;color:var(--deep);margin-bottom:10px}
.privacy-card p{font-size:14.5px;color:var(--muted)}

/* ===== 12. 版本更新 ===== */
.update-card{max-width:760px;margin:44px auto 0;padding:36px 38px}
.update-head{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:20px}
.update-ver{
  font-size:20px;font-weight:800;color:var(--primary-deep);
  background:var(--primary-soft);border:1px solid var(--border);
  padding:6px 18px;border-radius:999px;
}
.update-date{color:var(--muted);font-size:14.5px}
.update-log li{
  position:relative;padding-left:26px;margin-bottom:12px;font-size:15px;color:var(--text);
}
.update-log li::before{
  content:"";position:absolute;left:4px;top:8px;width:8px;height:8px;border-radius:50%;
  background:var(--primary);
}

/* ===== 13. FAQ ===== */
.faq-list{max-width:760px;margin:44px auto 0}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:14px;
  margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow);
  transition:box-shadow .25s;
}
.faq-item:hover{box-shadow:var(--shadow-hover)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
  background:none;border:0;padding:18px 22px;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--deep);text-align:left;min-height:56px;
}
.faq-arrow{
  width:10px;height:10px;flex:none;border-right:2px solid var(--primary);
  border-bottom:2px solid var(--primary);transform:rotate(45deg);
  transition:transform .3s;
}
.faq-item.open .faq-arrow{transform:rotate(-135deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .35s ease;
}
.faq-a-inner{padding:0 22px 20px;color:var(--muted);font-size:15px}

/* ===== 14. 下载区域 ===== */
.download{
  background:linear-gradient(160deg,var(--bg-soft),var(--primary-soft));
  text-align:center;
}
.dl-title{font-size:38px;color:var(--deep);display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap}
.dl-info{margin:16px 0 34px;color:var(--muted);font-size:15px}
.dl-btns{display:flex;justify-content:center;gap:18px;flex-wrap:wrap}
.dl-tip{margin-top:26px;color:var(--text);font-size:15px}

/* ===== 15. 页脚 ===== */
.footer{background:var(--deep);padding:30px 20px;text-align:center}
.footer p{color:rgba(255,255,255,.7);font-size:14px}
.footer a{color:#fff;font-weight:700;text-decoration:none}

/* ===== 16. 返回顶部 ===== */
.to-top{
  position:fixed;right:26px;bottom:30px;z-index:90;
  width:48px;height:48px;border-radius:50%;border:0;cursor:pointer;
  background:linear-gradient(120deg,var(--primary),var(--primary-deep));color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-hover);opacity:0;visibility:hidden;
  transition:opacity .3s,visibility .3s,transform .3s;
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{transform:translateY(-3px)}

/* ===== 响应式 ===== */
@media (max-width:1100px){
  .hero-title h1{font-size:38px}
  .persona-list{grid-template-columns:repeat(3,1fr);gap:16px 10px;max-width:none}
  .feature-list,.privacy-list,.stat-list{grid-template-columns:repeat(2,1fr)}
  .review-list{grid-template-columns:repeat(2,1fr)}
  .sec-title{font-size:29px}
}

@media (max-width:900px){
  .nav-menu{display:none}
  .hero{padding-top:calc(var(--nav-h) + 40px)}
  .hero-inner{grid-template-columns:1fr;gap:44px}
  .chat{max-width:480px}
  .intro-grid,.custom-grid{grid-template-columns:1fr;gap:36px}
  .custom-text{text-align:center}
  .custom-text .check-list li{text-align:left}
  .intro-img img,.custom-img img{max-width:560px;margin:0 auto}
  .vs{grid-template-columns:1fr;gap:18px}
  .vs-arrow{margin:0 auto}
  .scene-list{grid-template-columns:1fr}
}

@media (max-width:768px){
  .wrap{padding-left:20px;padding-right:20px}
  section{padding:64px 0}
  .hero-dl{width:100%}
  .table-wrap{overflow-x:auto}
  .cmp-table{min-width:640px}
  .slide-hint{display:block}
  .dl-btns{flex-direction:column;align-items:stretch;padding:0 20px}
  .dl-btns .btn{width:100%}
  .dl-info{font-size:13px;white-space:nowrap}
  .to-top{right:16px;bottom:20px}
}

@media (max-width:640px){
  .feature-list,.review-list,.privacy-list{grid-template-columns:1fr}
  .stat-list{grid-template-columns:repeat(2,1fr)}
  .step-list{grid-template-columns:1fr}
  .chat-body{height:280px}
  .hero-desc{font-size:15.5px}
  .hero-title h1{font-size:31px}
  .dl-title{font-size:29px}
  .stat-num{font-size:40px}
  .btn-lg{font-size:15.5px;padding:14px 26px}
}