/* ===== talkmaker 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:#FFB400;
  --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:72px}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
ul{list-style:none}
button{font-family:inherit}

/* 布局容器 */
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
section{padding:76px 0}
.sec-head{text-align:center;max-width:720px;margin:0 auto 46px}
.sec-head h2{font-size:34px;line-height:1.3;color:var(--deep);font-weight:800}
.sec-head p{margin-top:12px;font-size:15px;color:var(--muted)}

/* 通用卡片 */
.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)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:linear-gradient(90deg,var(--primary),var(--primary-deep));
  color:#fff;border:0;border-radius:999px;padding:14px 32px;
  font-size:16px;font-weight:600;cursor:pointer;text-decoration:none;white-space:nowrap;
  box-shadow:0 8px 20px rgba(240,61,116,.25);
  transition:transform .25s,box-shadow .25s;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(240,61,116,.34)}

/* ===== 导航 ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.94);border-bottom:1px solid transparent;transition:box-shadow .3s,border-color .3s}
.nav.scrolled{box-shadow:0 6px 20px rgba(42,26,61,.08);border-color:var(--border)}
.nav-in{max-width:1200px;margin:0 auto;height:var(--nav-h);display:flex;align-items:center;gap:18px;padding:0 24px}
.logo{display:flex;align-items:center;gap:8px;font-size:21px;line-height:1.45;font-weight:800;color:var(--deep);text-decoration:none;letter-spacing:.5px;white-space:nowrap}
.logo svg{color:var(--primary);flex-shrink:0}
.menu{display:flex;flex:1;justify-content:center;gap:2px}
.menu a{display:block;padding:8px 10px;font-size:13.5px;color:var(--text);text-decoration:none;border-radius:8px;transition:color .2s,background .2s}
.menu a:hover{color:var(--primary-deep);background:var(--primary-soft)}
.nav-btn{padding:6px 16px;font-size:13px;line-height:1.4;border-radius:999px;color:#fff;background:linear-gradient(90deg,var(--primary),var(--primary-deep));text-decoration:none;font-weight:600;white-space:nowrap;box-shadow:0 4px 12px rgba(240,61,116,.22);transition:transform .25s,box-shadow .25s}
.nav-btn:hover{transform:translateY(-1px);box-shadow:0 8px 18px rgba(240,61,116,.32)}

/* ===== Hero ===== */
.hero{padding:calc(var(--nav-h) + 52px) 0 76px;background:linear-gradient(180deg,var(--bg-soft) 0%,var(--bg) 72%)}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center}
.hero h1{font-size:44px;line-height:1.22;color:var(--deep);font-weight:800;letter-spacing:.5px}
.hero h1 em,.download h1 em{font-style:normal;background:linear-gradient(90deg,var(--primary),var(--primary-deep));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero h1 .ver,.download h1 .ver{display:inline-block;margin-left:10px;vertical-align:middle;font-weight:700;color:#fff;background:linear-gradient(90deg,var(--primary),var(--primary-deep));padding:3px 12px;border-radius:999px;letter-spacing:1px}
.hero h1 .ver{font-size:15px}
.download h1 .ver{font-size:14px}
.hero-desc{margin:18px 0 8px;font-size:16px;color:var(--muted);max-width:520px}
.personas{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;margin:28px 0 30px;max-width:560px}
.persona{text-align:center;transition:transform .25s}
.persona:hover{transform:translateY(-5px)}
.persona img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:50%;border:3px solid #fff;box-shadow:var(--shadow)}
.persona b{display:block;margin-top:9px;font-size:13.5px;color:var(--deep)}
.persona span{display:inline-block;margin-top:2px;font-size:12.5px;color:var(--primary-deep);background:var(--primary-soft);padding:1px 9px;border-radius:999px}
.persona .custom{color:var(--deep)}

/* 聊天窗口 */
.chat{background:#fff;border:1px solid var(--border);border-radius:22px;box-shadow:var(--shadow-hover);overflow:hidden;max-width:400px;margin-left:auto}
.chat-head{display:flex;align-items:center;gap:12px;padding:14px 16px;background:linear-gradient(120deg,var(--primary),var(--primary-deep));color:#fff}
.chat-ava{width:46px;height:46px;border-radius:50%;border:2px solid rgba(255,255,255,.92);object-fit:cover;flex-shrink:0}
.chat-head .name{font-size:15.5px;font-weight:700;line-height:1.3}
.chat-head .st{display:flex;align-items:center;gap:5px;font-size:12.5px;line-height:1.4;opacity:.96}
.chat-head .st i{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px rgba(255,255,255,.25);flex-shrink:0}
.chat-body{height:342px;overflow-y:auto;padding:18px 16px;background:var(--bg);display:flex;flex-direction:column;gap:13px;scroll-behavior:smooth}
.msg{display:flex;gap:8px;max-width:88%;align-items:flex-end}
.msg .ava{width:32px;height:32px;border-radius:50%;object-fit:cover;flex-shrink:0}
.msg .mine{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--deep),#4A2E63);color:#fff;font-size:12px;font-weight:700;flex-shrink:0}
.msg .bubble{padding:10px 14px;font-size:14px;line-height:1.6;border-radius:16px;word-break:break-word}
.msg.ai{align-self:flex-start}
.msg.ai .bubble{background:#fff;border:1px solid var(--border);border-top-left-radius:5px}
.msg.me{align-self:flex-end;flex-direction:row-reverse}
.msg.me .bubble{background:linear-gradient(120deg,var(--primary),var(--primary-deep));color:#fff;border-top-right-radius:5px;box-shadow:0 6px 14px rgba(240,61,116,.22)}
.chat-input{display:flex;align-items:center;gap:10px;padding:12px 14px;border-top:1px solid var(--border);background:#fff}
.chat-input input{flex:1;min-width:0;border:0;outline:none;background:var(--bg-soft);border-radius:999px;padding:10px 16px;font-size:13px;color:var(--muted);height:40px;cursor:default}
.send-btn{width:40px;height:40px;flex-shrink:0;border-radius:50%;border:0;background:linear-gradient(120deg,var(--primary),var(--primary-deep));color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 14px rgba(240,61,116,.3);transition:transform .2s,background .3s,box-shadow .2s}
.send-btn:hover{transform:scale(1.06)}
.send-btn.off{background:#D8C6D6;box-shadow:none;cursor:not-allowed;transform:none}

/* ===== 三步上手 ===== */
.steps{background:var(--bg)}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{padding:34px 28px;position:relative;overflow:hidden}
.step .num{position:absolute;top:14px;right:20px;font-size:52px;font-weight:800;color:var(--primary-soft);line-height:1}
.step .ic{width:52px;height:52px;border-radius:16px;background:var(--primary-soft);color:var(--primary-deep);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.step h3{font-size:19px;color:var(--deep);margin-bottom:8px}
.step p{font-size:14px;color:var(--muted)}

/* ===== 产品介绍 ===== */
.product,.compare,.privacy,.persona-sec{background:var(--bg-soft)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split .art{width:100%;border-radius:var(--radius);box-shadow:var(--shadow-hover)}
.split h3{font-size:30px;color:var(--deep);font-weight:800;line-height:1.35;margin-bottom:16px}
.split .lead{font-size:15px;color:var(--muted);margin-bottom:24px}
.check{display:flex;gap:12px;align-items:flex-start;padding:12px 16px;background:#fff;border:1px solid var(--border);border-radius:14px;margin-bottom:12px;transition:transform .25s,box-shadow .25s}
.check:hover{transform:translateX(4px);box-shadow:var(--shadow)}
.check .ic{width:24px;height:24px;flex-shrink:0;border-radius:50%;background:linear-gradient(120deg,var(--primary),var(--primary-deep));color:#fff;display:flex;align-items:center;justify-content:center;margin-top:2px}
.check p{font-size:14.5px;color:var(--text)}

/* ===== 四大核心功能 ===== */
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feat{padding:30px 26px}
.feat .ic{width:54px;height:54px;border-radius:16px;background:linear-gradient(135deg,var(--primary-soft),#FFD3E3);color:var(--primary-deep);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.feat h3{font-size:18px;color:var(--deep);margin-bottom:10px}
.feat .pain{display:inline-block;font-size:13px;font-weight:600;color:var(--primary-deep);background:var(--primary-soft);padding:3px 12px;border-radius:999px;margin-bottom:12px}
.feat p{font-size:14px;color:var(--muted)}

/* ===== 优势对比 ===== */
.tbl-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow);-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;table-layout:fixed;min-width:640px}
th,td{padding:15px 16px;font-size:14px;text-align:center;border-bottom:1px solid var(--border);white-space:nowrap}
th{background:var(--deep);color:#fff;font-weight:600}
th:first-child{text-align:left}
td{color:var(--text)}
td:first-child{text-align:left;font-weight:600;color:var(--deep)}
tbody tr:last-child td{border-bottom:0}
col.hl{background:var(--primary-soft)}
.tbl-hint{display:none;text-align:center;font-size:12.5px;color:var(--muted);margin-top:12px}
.tbl-hint svg{vertical-align:-3px;margin-right:4px;color:var(--primary)}

/* ===== 使用场景 ===== */
.scene-list{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-bottom:44px}
.scene-list li{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--border);border-radius:999px;padding:10px 20px;font-size:14.5px;font-weight:600;color:var(--deep);box-shadow:var(--shadow)}
.scene-list .ic{color:var(--primary);flex-shrink:0}
.vs{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.vs-card{padding:34px 30px}
.vs-card.together{background:linear-gradient(150deg,var(--primary-soft),#FFD9EA);border-color:#F7BFD8}
.vs-card h3{font-size:19px;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.vs-card.alone h3{color:var(--muted)}
.vs-card.together h3{color:var(--primary-deep)}
.vs-card ul li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--text);padding:7px 0}
.vs-card .ic{flex-shrink:0;margin-top:3px}
.vs-card.alone .ic{color:#CBB8C8}
.vs-card.together .ic{color:var(--primary-deep)}

/* ===== 数据模块 ===== */
.stats{background:var(--deep);padding:80px 0}
.stats .sec-head h2{color:#fff}
.stats .sec-head p{color:#C9B8D8}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat .num{display:block;font-size:46px;font-weight:800;line-height:1.25;background:linear-gradient(90deg,#FFB3CB,#FF5C8A);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .lab{display:block;margin-top:8px;font-size:14.5px;color:#C9B8D8}

/* ===== 人设定制 ===== */
.custom-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.custom-tags span{font-size:13.5px;font-weight:600;color:var(--deep);background:#fff;border:1px solid var(--border);padding:8px 18px;border-radius:999px;box-shadow:var(--shadow)}

/* ===== 用户评价 ===== */
.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rev{padding:26px 24px;display:flex;gap:14px;align-items:flex-start}
.rev .avatar{width:46px;height:46px;flex-shrink:0;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;box-shadow:0 6px 14px rgba(240,61,116,.28)}
.rev .meta b{display:block;font-size:15px;color:var(--deep)}
.rev .stars{display:flex;gap:2px;color:var(--gold);margin:4px 0 8px}
.rev .stars svg{width:15px;height:15px}
.rev p{font-size:14px;color:var(--muted)}

/* ===== 隐私安全 ===== */
.pri{padding:30px 26px;text-align:center}
.pri .ic{width:56px;height:56px;margin:0 auto 16px;border-radius:50%;background:linear-gradient(135deg,var(--primary-soft),#FFD3E3);color:var(--primary-deep);display:flex;align-items:center;justify-content:center}
.pri h3{font-size:17.5px;color:var(--deep);margin-bottom:8px}
.pri p{font-size:14px;color:var(--muted)}

/* ===== 版本更新 ===== */
.update .ver{font-size:44px;font-weight:800;color:var(--deep);letter-spacing:1px;background:linear-gradient(90deg,var(--primary),var(--primary-deep));-webkit-background-clip:text;background-clip:text;color:transparent}
.update .ver-date{display:inline-block;margin-top:6px;font-size:14px;font-weight:600;color:var(--primary-deep);background:var(--primary-soft);padding:4px 16px;border-radius:999px}
.update .log-wrap{max-width:640px;margin:34px auto 0;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:30px 34px}
.update .log li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:var(--text);padding:9px 0;border-bottom:1px dashed var(--border)}
.update .log li:last-child{border-bottom:0}
.update .log .ic{color:var(--green);flex-shrink:0;margin-top:3px}

/* ===== FAQ ===== */
.faq-wrap{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{border:1px solid var(--border);border-radius:16px;background:#fff;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;padding:17px 22px;background:none;border:0;font-size:15.5px;font-weight:600;color:var(--deep);cursor:pointer;text-align:left;line-height:1.5}
.faq-q svg{flex-shrink:0;color:var(--primary);transition:transform .3s}
.faq-item.open .faq-q svg{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 22px 18px;font-size:14px;color:var(--muted)}

/* ===== 下载区域 ===== */
.download{background:linear-gradient(180deg,var(--bg) 0%,var(--bg-soft) 100%);text-align:center}
.download h1{font-size:38px;font-weight:800;color:var(--deep);letter-spacing:.5px}
.dl-meta{margin-top:12px;font-size:13px;color:var(--muted)}
.dl-btns{display:flex;gap:16px;justify-content:center;margin:30px 0 20px}
.dl-btns .btn{padding:15px 34px;font-size:15px}
.dl-tip{font-size:14.5px;color:var(--muted)}
.dl-tip .light{color:var(--primary-deep)}

/* ===== 页脚 ===== */
.footer{background:var(--deep);color:#C9B8D8;padding:38px 0;text-align:center;font-size:13.5px}
.footer a{color:#fff;text-decoration:none}
.footer a:hover{color:var(--primary)}
.footer .copy{margin-top:6px;color:#A793B4}

/* ===== 返回顶部 ===== */
.to-top{position:fixed;right:26px;bottom:26px;width:46px;height:46px;border-radius:50%;border:0;background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 24px rgba(240,61,116,.35);opacity:0;visibility:hidden;transform:translateY(14px);transition:opacity .3s,transform .3s,visibility .3s;z-index:90}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{transform:translateY(-3px)}

/* ===== 响应式 ===== */
@media (max-width:1100px){
  .personas{grid-template-columns:repeat(3,1fr);max-width:480px}
  .grid4{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .rev-grid{grid-template-columns:repeat(2,1fr)}
  .hero h1{font-size:37px}
  .menu a{padding:8px 7px;font-size:12.5px}
}
@media (max-width:900px){
  .menu{display:none}
  .nav-btn{margin-left:auto}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero{padding-top:calc(var(--nav-h) + 30px)}
  .chat{margin:0 auto;max-width:480px;width:100%}
  .split{grid-template-columns:1fr;gap:34px}
  .steps-grid{grid-template-columns:1fr}
  .vs{grid-template-columns:1fr}
  section{padding:58px 0}
  .sec-head h2{font-size:28px}
  .split h3{font-size:26px}
}
@media (max-width:768px){
  .wrap{padding:0 20px}
  .nav-in{padding:0 20px}
  .tbl-hint{display:block}
  .dl-btns{flex-direction:column}
  .dl-btns .btn{width:100%}
  .dl-meta{font-size:12px;white-space:nowrap}
  .download h1{font-size:30px}
  .hero .btn,
  .split .btn{width:100%}
}
@media (max-width:640px){
  .grid4,.rev-grid{grid-template-columns:1fr}
  .chat-body{height:286px}
  .hero h1{font-size:28px}
  .stat .num{font-size:34px}
  .update .ver{font-size:36px}
  .to-top{right:16px;bottom:16px;width:42px;height:42px}
  .logo,.nav-btn{min-height:44px;display:inline-flex;align-items:center}
  .send-btn{width:44px;height:44px}
  .chat-input input{height:44px}
}