/* Growth Lab 产品介绍页 · 紫蓝科技风样式 */
/* 配色依据 Michelle 确认的企业版风格 */
:root{
  --bg:#F0F4F8;          /* 浅色主背景 */
  --ink:#2A3A5C;         /* 深藏蓝文字 */
  --ink-deep:#111E30;
  --purple:#8A6DFF;      /* 亮紫 */
  --purple-light:#D4C8FF;/* 浅紫 */
  --purple-deep:#2A1E5C; /* 深紫 */
  --bone:#C8D4E0;        /* 浅灰蓝 */
  --green:#4CAF50;       /* 对勾正面绿 */
  --white:#FFFFFF;
  --card-line:#E2EAF2;
  --shadow:0 10px 30px rgba(42,58,92,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'MiSans Normal','PingFang SC','Microsoft YaHei',Arial,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.font-bold{font-family:'MiSans Demibold','PingFang SC','Microsoft YaHei',Arial,sans-serif;font-weight:700}

/* 顶部导航 */
.topnav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(240,244,248,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--card-line);
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 5vw;
}
.topnav .brand{display:flex;align-items:center;gap:10px;font-size:18px}
.topnav .logo{width:34px;height:34px;border-radius:9px;
  background:linear-gradient(135deg,var(--purple) 0%,var(--purple-deep) 100%);
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:17px}
.topnav nav{display:flex;gap:26px;font-size:14px}
.topnav nav a{color:var(--ink);text-decoration:none;opacity:.8;transition:opacity .2s}
.topnav nav a:hover{opacity:1;color:var(--purple)}
.topnav .cta{
  background:var(--purple);color:#fff;border:none;border-radius:24px;
  padding:9px 22px;font-size:14px;cursor:pointer;font-weight:600;transition:transform .2s,box-shadow .2s;
}
.topnav .cta:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(138,109,255,.4)}
@media(max-width:860px){.topnav nav{display:none}}

.wrap{max-width:1180px;margin:0 auto;padding:0 5vw}

/* HERO */
.hero{
  padding:150px 0 80px;position:relative;overflow:hidden;
  background:
    radial-gradient(700px 400px at 85% 10%,rgba(138,109,255,.18),transparent 60%),
    radial-gradient(500px 300px at 5% 30%,rgba(42,58,92,.10),transparent 60%),
    linear-gradient(180deg,#F0F4F8 0%,#F7FAFD 100%);
}
.hero .grid{display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:center}
.hero .badge{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--purple-deep);
  background:rgba(138,109,255,.12);border:1px solid rgba(138,109,255,.3);
  padding:6px 14px;border-radius:20px;margin-bottom:22px;font-weight:600
}
.hero h1{font-size:52px;line-height:1.2;color:var(--purple-deep);letter-spacing:.5px}
.hero h1 .accent{color:var(--purple);background:linear-gradient(120deg,var(--purple),var(--purple-deep));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero .sub{margin-top:22px;font-size:20px;color:var(--ink);opacity:.92;max-width:560px}
.hero .proof{margin-top:26px;display:flex;align-items:center;gap:14px;
  background:var(--white);border:1px solid var(--card-line);border-radius:14px;padding:14px 18px;max-width:600px;box-shadow:var(--shadow)}
.hero .proof .dot{width:10px;height:10px;border-radius:50%;background:var(--green);flex-shrink:0;box-shadow:0 0 0 4px rgba(76,175,80,.2)}
.hero .proof p{font-size:15px;color:var(--ink-deep)}
.hero .cta-row{margin-top:34px;display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;border:none;border-radius:28px;
  padding:15px 34px;font-size:17px;font-weight:600;cursor:pointer;text-decoration:none;transition:transform .2s,box-shadow .2s}
.btn-primary{background:linear-gradient(120deg,var(--purple),var(--purple-deep));color:#fff;box-shadow:0 12px 30px rgba(138,109,255,.35)}
.btn-primary:hover{transform:translateY(-3px)}
.btn-ghost{background:#fff;color:var(--purple-deep);border:1.5px solid var(--purple);box-shadow:var(--shadow)}
.btn-ghost:hover{transform:translateY(-3px);background:rgba(138,109,255,.06)}
.hero-card{
  background:var(--white);border-radius:22px;padding:30px;box-shadow:var(--shadow);
  border:1px solid var(--card-line);position:relative
}
.hero-card .live{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--green);font-weight:600;margin-bottom:16px}
.hero-card .live .dot{width:9px;height:9px;border-radius:50%;background:var(--green);animation:pulse 1.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(76,175,80,.5)}70%{box-shadow:0 0 0 8px rgba(76,175,80,0)}100%{box-shadow:0 0 0 0 rgba(76,175,80,0)}}
/* 时间轴线条 */
.tl{list-style:none;border-left:2px solid var(--bone);margin:10px 0 0 6px;padding-left:22px}
.tl li{position:relative;padding:12px 0}
.tl li::before{content:"";position:absolute;left:-29px;top:20px;width:12px;height:12px;border-radius:50%;background:var(--purple);box-shadow:0 0 0 4px var(--purple-light)}
.tl .t{font-weight:700;color:var(--purple-deep);font-size:16px;font-family:'MiSans Demibold',sans-serif}
.tl .d{font-size:14px;color:var(--ink);opacity:.85}

@media(max-width:900px){.hero .grid{grid-template-columns:1fr}.hero h1{font-size:40px}}

/* 章节 */
.section{padding:84px 0}
.section.alt{background:var(--white)}
.kicker{font-size:13px;letter-spacing:2px;font-weight:700;color:var(--purple);text-transform:uppercase;margin-bottom:12px}
.section h2{font-size:38px;color:var(--purple-deep);line-height:1.25;margin-bottom:16px}
.section .lead{font-size:18px;color:var(--ink);opacity:.9;max-width:760px;margin-bottom:44px}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}

/* 背书条 */
.flag{
  background:linear-gradient(120deg,var(--purple-deep) 0%,#3a2a70 100%);color:#fff;
  padding:40px 0;border-radius:20px;margin:0 5vw;text-align:center
}
.flag .big{font-size:30px;font-weight:700;margin-bottom:10px}
.flag p{font-size:17px;opacity:.92;max-width:700px;margin:0 auto}
.flag .tag{display:inline-flex;gap:24px;margin-top:22px;font-size:14px;
  background:rgba(255,255,255,.14);padding:10px 22px;border-radius:30px}
.flag .tag span{display:flex;align-items:center;gap:6px}

/* 卡片网格 */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
@media(max-width:860px){.grid3,.grid2{grid-template-columns:1fr}}
.card{background:var(--white);border:1px solid var(--card-line);border-radius:18px;padding:26px;
  box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.card:hover{transform:translateY(-5px);box-shadow:0 18px 40px rgba(42,58,92,.12)}
.card .ic{width:52px;height:52px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--purple-light),rgba(138,109,255,.35));font-size:25px;margin-bottom:16px}
.card h3{font-size:19px;color:var(--purple-deep);margin-bottom:10px}
.card p{font-size:14.5px;color:var(--ink);opacity:.9}
.card.green .ic{background:linear-gradient(135deg,#E3F5E7,#B9E6C5)}
.card.tall .num{font-size:44px;font-weight:700;color:var(--purple);line-height:1;margin-bottom:6px}

/* 对比 */
.vs{display:grid;grid-template-columns:1fr auto 1fr;gap:20px;align-items:center}
@media(max-width:860px){.vs{grid-template-columns:1fr}}
.vs .box{border-radius:18px;padding:26px;border:1px solid var(--card-line)}
.vs .bad{border:1.5px solid #F0C7C7;background:#FDF3F3}
.vs .good{border:1.5px solid var(--green);background:#F2FBF4}
.vs h3{font-size:18px;margin-bottom:14px}
.vs h3 .x{color:#D9534F;margin-right:6px}.vs h3 .ck{color:var(--green);margin-right:6px}
.vs ul{list-style:none}
.vs li{padding:7px 0;font-size:14.5px;display:flex;gap:8px;align-items:flex-start}
.vs .mid{font-weight:700;color:var(--purple);font-size:15px;text-align:center}

/* 架构图 */
.arch{background:var(--white);border:1px solid var(--card-line);border-radius:20px;padding:34px;box-shadow:var(--shadow)}
.arch .top{background:linear-gradient(135deg,var(--purple-deep),var(--purple));color:#fff;
  border-radius:14px;padding:16px;text-align:center;font-weight:700;font-size:17px;margin-bottom:18px}
.arch .row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:860px){.arch .row{grid-template-columns:1fr}}
.arch .grp{padding:18px;border-radius:14px;background:var(--bg)}
.arch .grp h4{text-align:center;font-size:15px;margin-bottom:14px;color:var(--purple-deep)}
.arch .chips{display:flex;flex-direction:column;gap:8px}
.arch .chip{background:#fff;border:1px solid var(--card-line);border-radius:10px;padding:9px 12px;
  font-size:13.5px;text-align:center;color:var(--ink)}
.arch .chip.tag-green{border-color:var(--green);color:var(--green)}

/* 闭环 */
.loop{position:relative;display:flex;flex-direction:column;gap:0;max-width:520px;margin:0 auto}
.loop .step{display:flex;gap:18px;align-items:flex-start;background:#fff;border:1px solid var(--card-line);
  border-radius:14px;padding:18px 20px;box-shadow:var(--shadow);position:relative}
.loop .step .time{background:var(--purple);color:#fff;font-weight:700;border-radius:8px;padding:6px 12px;white-space:nowrap;font-size:14px}
.loop .step .txt{font-size:14.5px}
.loop .conn{width:2px;height:26px;background:var(--purple);margin-left:40px}

/* 行业网格 */
.industries{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width:860px){.industries{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.industries{grid-template-columns:1fr}}
.ind{background:#fff;border:1px solid var(--card-line);border-radius:14px;padding:18px;
  display:flex;flex-direction:column;gap:6px;transition:transform .2s,box-shadow .2s}
.ind:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.ind .n{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--purple-deep);font-size:15px}
.ind .n .i{width:30px;height:30px;border-radius:8px;background:var(--purple-light);display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0}
.ind .job{font-size:13px;font-weight:600;color:var(--purple)}
.ind .gain{font-size:12.5px;color:var(--ink);opacity:.85}

/* 报价 */
.price{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:860px){.price{grid-template-columns:1fr}}
.pcard{background:#fff;border:1px solid var(--card-line);border-radius:20px;padding:30px;box-shadow:var(--shadow);position:relative;display:flex;flex-direction:column}
.pcard.pop{border:2px solid var(--purple);transform:translateY(-10px)}
.pcard.pop .flag-g{position:absolute;top:-14px;left:50%;transform:translateX(-50%);
  background:var(--purple);color:#fff;font-size:12px;font-weight:600;padding:5px 14px;border-radius:20px;white-space:nowrap}
.pcard .name{font-size:17px;font-weight:700;color:var(--purple-deep);margin-bottom:8px}
.pcard .price-v{font-size:42px;font-weight:700;color:var(--purple);line-height:1;margin-bottom:6px}
.pcard .price-v small{font-size:15px;color:var(--ink);opacity:.7;font-weight:400}
.pcard .desc{font-size:13.5px;color:var(--ink);opacity:.8;margin-bottom:18px}
.pcard ul{list-style:none;flex:1}
.pcard li{padding:6px 0;font-size:14px;display:flex;gap:8px;align-items:flex-start}
.pcard li .ck{color:var(--green);flex-shrink:0}
.pcard .btn{margin-top:22px;width:100%;justify-content:center;font-size:15px;padding:13px}

/* 情绪共鸣 */
.worry{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:860px){.worry{grid-template-columns:1fr}}
.wcard{background:var(--white);border:1px solid var(--card-line);border-radius:16px;padding:24px;box-shadow:var(--shadow)}
.wcard .q{font-size:18px;color:var(--purple);margin-bottom:10px}
.wcard p{font-size:14.5px;color:var(--ink);opacity:.9}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:860px){.steps{grid-template-columns:1fr 1fr}.steps .stepm:nth-child(3){grid-column:1/-1}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}
.stepm{background:#fff;border:1px solid var(--card-line);border-radius:16px;padding:22px;box-shadow:var(--shadow);text-align:center;position:relative}
.stepm .no{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--purple),var(--purple-deep));color:#fff;
  font-weight:700;display:flex;align-items:center;justify-content:center;margin:0 auto 12px}
.stepm h3{font-size:16px;color:var(--purple-deep);margin-bottom:6px}
.stepm p{font-size:13px;color:var(--ink);opacity:.85}

/* FAQ */
.faq{max-width:820px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--card-line);border-radius:14px;padding:18px 22px;margin-bottom:12px;box-shadow:var(--shadow)}
.faq summary{cursor:pointer;font-weight:600;color:var(--purple-deep);font-size:16px}
.faq details p{margin-top:12px;font-size:14.5px;color:var(--ink);opacity:.92}

/* CTA */
.cta-final{background:linear-gradient(135deg,var(--purple-deep) 0%,var(--purple) 100%);color:#fff;border-radius:24px;
  padding:60px 40px;text-align:center;margin:0 5vw}
.cta-final h2{color:#fff;font-size:36px;margin-bottom:14px}
.cta-final p{font-size:17px;opacity:.93;max-width:640px;margin:0 auto 30px}
.cta-final .btn{border:2px solid #fff;background:transparent;color:#fff;font-size:17px}
.cta-final .btn.solid{background:#fff;color:var(--purple-deep);border-color:#fff}
.cta-final .small{font-size:13px;opacity:.8;margin-top:18px}

footer{background:var(--purple-deep);color:#fff;text-align:center;padding:34px 20px;font-size:13.5px;margin-top:60px}
footer .brand{font-size:16px;font-weight:700;margin-bottom:6px}
footer a{color:var(--purple-light);text-decoration:none}

/* —— 交互式 AI 咨询助手 —— */
.assist-trig{position:fixed;right:22px;bottom:22px;z-index:300;display:flex;align-items:center;gap:10px;
  background:linear-gradient(120deg,var(--purple),var(--purple-deep));color:#fff;border:none;
  border-radius:40px;padding:14px 22px;font-size:15px;font-weight:600;cursor:pointer;
  box-shadow:0 12px 30px rgba(138,109,255,.45);transition:transform .2s}
.assist-trig:hover{transform:translateY(-3px) scale(1.02)}
.assist-trig .bubble{width:30px;height:30px;border-radius:50%;background:#fff;color:var(--purple-deep);
  display:flex;align-items:center;justify-content:center;font-size:15px}
.assist-panel{position:fixed;right:22px;bottom:92px;z-index:300;width:360px;max-height:540px;
  background:#fff;border-radius:20px;box-shadow:0 24px 60px rgba(20,20,60,.3);
  display:none;flex-direction:column;overflow:hidden;border:1px solid var(--card-line)}
.assist-panel.open{display:flex;animation:rise .3s ease}
@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
.assist-head{background:linear-gradient(135deg,var(--purple-deep),var(--purple));color:#fff;padding:15px 18px}
.assist-head .row{display:flex;align-items:center;gap:12px}
.assist-head .ava{width:40px;height:40px;border-radius:50%;background:#fff;color:var(--purple-deep);
  display:flex;align-items:center;justify-content:center;font-size:19px;font-weight:700}
.assist-head .nm{font-size:15px;font-weight:700}
.assist-head .st{font-size:11.5px;opacity:.9;display:flex;align-items:center;gap:5px}
.assist-head .st .dot{width:7px;height:7px;border-radius:50%;background:#5AF28A}
.assist-x{margin-left:auto;background:transparent;border:none;color:#fff;font-size:22px;cursor:pointer;line-height:1}
.assist-body{flex:1;overflow-y:auto;padding:16px;background:var(--bg);display:flex;flex-direction:column;gap:12px}
.msg{max-width:84%;padding:10px 14px;border-radius:16px;font-size:13.5px;line-height:1.55;white-space:pre-wrap}
.msg.bot{background:#fff;color:var(--ink);border:1px solid var(--card-line);align-self:flex-start;border-bottom-left-radius:4px}
.msg.user{background:linear-gradient(120deg,var(--purple),var(--purple-deep));color:#fff;align-self:flex-end;border-bottom-right-radius:4px}
.assist-sugg{display:flex;flex-wrap:wrap;gap:8px;padding:10px 16px;background:var(--bg);border-top:1px solid var(--card-line)}
.assist-sugg button{font-size:12px;border:1px solid var(--purple);color:var(--purple-deep);background:#fff;
  border-radius:16px;padding:6px 12px;cursor:pointer;transition:background .2s}
.assist-sugg button:hover{background:var(--purple-light)}
.assist-input{display:flex;gap:8px;padding:12px;background:#fff;border-top:1px solid var(--card-line)}
.assist-input input{flex:1;border:1px solid var(--card-line);border-radius:20px;padding:10px 16px;font-size:13.5px;outline:none}
.assist-input input:focus{border-color:var(--purple)}
.assist-send{background:var(--purple);color:#fff;border:none;border-radius:50%;width:38px;height:38px;cursor:pointer;font-size:16px;flex-shrink:0}
@media(max-width:520px){.assist-panel{width:calc(100vw - 30px);right:15px;bottom:84px}}

@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}