/* ===== 菁台AI数智指挥官 · 招商首页 样式 ===== */
:root{
  --brand:#7C4DFF;
  --brand-600:#6A35F0;
  --brand-700:#5B2EDB;
  --blue:#2D7FF9;
  --ink:#15162A;
  --text:#262842;
  --muted:#6B6E8C;
  --bg:#F6F7FC;
  --card:#FFFFFF;
  --line:#ECECF5;
  --ok:#1FBF75;
  --shadow:0 12px 34px rgba(28,25,71,.07);
  --shadow-lg:0 22px 60px rgba(84,52,224,.16);
  --radius:18px;
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",system-ui,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}
section{padding:84px 0}
.section-head{text-align:center;max-width:760px;margin:0 auto 50px}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.12em;
  color:var(--brand-700);background:rgba(124,77,255,.1);
  padding:6px 16px;border-radius:999px;margin-bottom:16px;
}
.section-head h2{font-size:34px;line-height:1.25;color:var(--ink);font-weight:800;letter-spacing:-.02em}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px}

/* ===== 导航 ===== */
header.nav{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.nav .container{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);font-size:17px;white-space:nowrap}
.logo .mark{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--brand),var(--blue));display:grid;place-items:center;box-shadow:0 6px 16px rgba(124,77,255,.35)}
.logo .mark svg{width:22px;height:22px}
.nav nav ul{display:flex;gap:14px;list-style:none;flex-wrap:nowrap}
.nav nav a{font-size:13.5px;color:var(--text);font-weight:600;transition:color .2s;white-space:nowrap}
.nav nav a:hover{color:var(--brand-700)}
.nav .nav-cta{display:flex;align-items:center;gap:10px}
.nav .nav-cta .btn{padding:10px 16px;font-size:14px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:15px;border-radius:12px;padding:12px 22px;cursor:pointer;
  border:1px solid transparent;transition:transform .18s,box-shadow .18s,background .2s;white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-600));color:#fff;box-shadow:0 10px 24px rgba(124,77,255,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(124,77,255,.42)}
.btn-ghost{background:#fff;color:var(--brand-700);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);transform:translateY(-2px)}
.btn-lg{padding:15px 30px;font-size:16px;border-radius:14px}
.btn-block{width:100%}
.mobile-toggle{display:none;font-size:24px;color:var(--ink);cursor:pointer}

/* ===== Hero ===== */
.hero{position:relative;padding:74px 0 88px;background:
  radial-gradient(1100px 520px at 12% -8%,rgba(124,77,255,.16),transparent 60%),
  radial-gradient(900px 480px at 92% 0%,rgba(45,127,249,.14),transparent 55%),
  linear-gradient(180deg,#FBFAFF,#F6F7FC);overflow:hidden}
.hero .container{display:grid;grid-template-columns:1.08fr .92fr;gap:46px;align-items:center}
.hero h1{font-size:46px;line-height:1.18;color:var(--ink);font-weight:850;letter-spacing:-.025em}
.hero h1 .hl{background:linear-gradient(120deg,var(--brand),var(--blue));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .sub{margin-top:20px;font-size:17.5px;color:var(--muted);max-width:540px}
.hero .cta-row{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.hero .trust{display:flex;gap:26px;margin-top:34px;flex-wrap:wrap}
.hero .trust .t{display:flex;flex-direction:column}
.hero .trust .num{font-size:26px;font-weight:850;color:var(--ink)}
.hero .trust .lab{font-size:13px;color:var(--muted)}
.hero-visual{position:relative}
.hero-card{
  background:#fff;border-radius:22px;box-shadow:var(--shadow-lg);padding:18px;border:1px solid var(--line);
  transform:rotate(1.2deg);
}
.hero-card .bar{display:flex;align-items:center;gap:7px;margin-bottom:14px}
.hero-card .dot{width:11px;height:11px;border-radius:50%}
.hero-card .row{display:flex;align-items:center;gap:12px;padding:11px 12px;border-radius:12px;background:#F7F7FD;margin-bottom:9px}
.hero-card .row .ic{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--blue));display:grid;place-items:center;color:#fff;font-size:15px;flex:none}
.hero-card .row .tx b{font-size:13.5px;color:var(--ink);display:block}
.hero-card .row .tx span{font-size:12px;color:var(--muted)}
.hero-float{
  position:absolute;right:-14px;bottom:-22px;background:#fff;border-radius:14px;padding:12px 16px;
  box-shadow:var(--shadow);display:flex;align-items:center;gap:10px;transform:rotate(-3deg)
}
.hero-float .badge{width:40px;height:40px;border-radius:11px;background:rgba(31,191,117,.14);color:var(--ok);display:grid;place-items:center;font-size:20px}
.hero-float b{font-size:15px;color:var(--ink)}
.hero-float span{font-size:12px;color:var(--muted);display:block}

/* ===== 信任条 ===== */
.marquee{background:var(--ink);color:#fff;padding:18px 0;overflow:hidden}
.marquee .track{display:flex;gap:48px;white-space:nowrap;animation:scroll 22s linear infinite;width:max-content}
.marquee span{font-size:15px;font-weight:600;opacity:.92;display:inline-flex;align-items:center;gap:10px}
.marquee span::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand)}
@keyframes scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ===== 通用卡片网格 ===== */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;
  box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:rgba(124,77,255,.35)}
.card .ic{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,var(--brand),var(--blue));display:grid;place-items:center;color:#fff;margin-bottom:18px}
.card .ic svg{width:26px;height:26px}
.card h3{font-size:18.5px;color:var(--ink);font-weight:800;margin-bottom:9px}
.card p{color:var(--muted);font-size:14.5px}
.card .tag{display:inline-block;font-size:12px;font-weight:700;color:var(--brand-700);background:rgba(124,77,255,.1);padding:3px 10px;border-radius:8px;margin-bottom:12px}
.card .layer{font-size:14px;font-weight:800;color:var(--brand-700);letter-spacing:.04em}
.card .big{font-size:28px;font-weight:850;color:var(--ink);margin:10px 0 6px}
.card .desc{font-size:14px;color:var(--muted)}

/* ===== 优势区（深色反差） ===== */
.adv{background:linear-gradient(180deg,#15162A,#1E1F3C);color:#fff}
.adv .section-head h2{color:#fff}
.adv .section-head p{color:rgba(255,255,255,.66)}
.adv .eyebrow{color:#fff;background:rgba(255,255,255,.12)}
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.adv-item{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:24px;transition:background .2s,transform .2s}
.adv-item:hover{background:rgba(255,255,255,.09);transform:translateY(-4px)}
.adv-item .ai{font-size:22px;margin-bottom:12px}
.adv-item h4{font-size:17px;font-weight:800;margin-bottom:7px}
.adv-item p{color:rgba(255,255,255,.65);font-size:14px}

/* ===== 招商模式 ===== */
.plan{position:relative}
.plan .card.feature{background:linear-gradient(150deg,#7C4DFF,#5B2EDB);color:#fff;border:none}
.plan .card.feature p{color:rgba(255,255,255,.86)}
.plan .card.feature .tag{color:#fff;background:rgba(255,255,255,.18)}
.plan .card.feature .price{color:#fff}
.plan .card.feature .price small{color:rgba(255,255,255,.8)}
.plan .ribbon{position:absolute;top:16px;right:-6px;background:#FFC93C;color:#3a2a00;font-size:12px;font-weight:800;padding:5px 14px;border-radius:8px 0 0 8px;box-shadow:0 4px 10px rgba(0,0,0,.15)}
.plan .price{font-size:30px;font-weight:850;color:var(--ink);margin:6px 0 4px}
.plan .price small{font-size:14px;color:var(--muted);font-weight:600}
.plan ul{list-style:none;margin-top:14px;display:flex;flex-direction:column;gap:10px}
.plan ul li{display:flex;gap:10px;font-size:14.5px;color:var(--text)}
.plan ul li::before{content:"✓";color:var(--ok);font-weight:900;flex:none}
.plan .card.feature ul li{color:rgba(255,255,255,.92)}
.plan .card.feature ul li::before{color:#fff}

/* ===== 收益模型 ===== */
.profit .grid-3 .card{text-align:center;padding:34px 24px}
.profit .layer{font-size:14px;font-weight:800;color:var(--brand-700);letter-spacing:.04em}
.profit .big{font-size:30px;font-weight:850;color:var(--ink);margin:10px 0 6px}
.profit .desc{font-size:14px;color:var(--muted)}
.profit-table{margin-top:30px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.profit-table table{width:100%;border-collapse:collapse}
.profit-table th,.profit-table td{padding:15px 18px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line)}
.profit-table th{background:#F7F7FD;color:var(--ink);font-weight:800}
.profit-table tr:last-child td{border-bottom:none}
.profit-table td b{color:var(--brand-700)}
.disclaimer{margin-top:16px;font-size:12.5px;color:var(--muted);background:rgba(124,77,255,.06);border:1px dashed rgba(124,77,255,.3);border-radius:12px;padding:12px 16px}

/* ===== 支持体系 ===== */
.support .grid-3 .card{display:flex;gap:16px;align-items:flex-start}
.support .card .ic{flex:none;margin-bottom:0}
.support .card .body h3{font-size:16.5px}
.support .card .body p{font-size:13.8px}

/* ===== 流程 ===== */
.steps{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;counter-reset:step}
.step{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 16px;text-align:center;position:relative;box-shadow:var(--shadow)}
.step::before{counter-increment:step;content:counter(step);position:absolute;top:-14px;left:50%;transform:translateX(-50%);width:30px;height:30px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--blue));color:#fff;font-weight:800;display:grid;place-items:center;font-size:14px;box-shadow:0 6px 14px rgba(124,77,255,.35)}
.step h4{font-size:15px;color:var(--ink);font-weight:800;margin:10px 0 6px}
.step p{font-size:12.8px;color:var(--muted)}

/* ===== FAQ ===== */
.faq .item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden}
.faq .q{display:flex;justify-content:space-between;align-items:center;padding:18px 22px;cursor:pointer;font-weight:700;color:var(--ink);font-size:15.5px}
.faq .q .plus{font-size:22px;color:var(--brand);transition:transform .25s;flex:none}
.faq .item.open .q .plus{transform:rotate(45deg)}
.faq .a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 22px;color:var(--muted);font-size:14.5px}
.faq .item.open .a{max-height:240px;padding:0 22px 18px}

/* ===== 表单 CTA ===== */
.cta-band{background:linear-gradient(135deg,#7C4DFF,#2D7FF9);color:#fff}
.cta-band .container{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.cta-band h2{font-size:32px;font-weight:850;color:#fff;letter-spacing:-.02em}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.88);font-size:16px}
.form-card{background:#fff;border-radius:20px;padding:30px;box-shadow:var(--shadow-lg)}
.form-card h3{font-size:20px;color:var(--ink);font-weight:800;margin-bottom:4px}
.form-card .hint{font-size:13px;color:var(--muted);margin-bottom:18px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13.5px;font-weight:700;color:var(--text);margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:11px;font-size:14.5px;
  font-family:inherit;color:var(--text);background:#FBFBFE;transition:border-color .2s,box-shadow .2s;outline:none
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(124,77,255,.14)}
.field textarea{resize:vertical;min-height:80px}
.field.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-note{font-size:12px;color:var(--muted);margin-top:10px;text-align:center}
.form-msg{margin-top:12px;font-size:14px;font-weight:600;text-align:center;min-height:20px}
.form-msg.ok{color:var(--ok)}
.form-msg.err{color:#E5484D}

/* ===== Footer ===== */
footer{background:#0F1022;color:rgba(255,255,255,.7);padding:54px 0 26px}
footer .top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
footer .f-logo{display:flex;align-items:center;gap:11px;color:#fff;font-weight:800;font-size:18px;margin-bottom:14px}
footer h5{color:#fff;font-size:15px;font-weight:800;margin-bottom:14px}
footer ul{list-style:none;display:flex;flex-direction:column;gap:9px}
footer ul a{font-size:13.5px;color:rgba(255,255,255,.66);transition:color .2s}
footer ul a:hover{color:#fff}
footer .desc{font-size:13.5px;line-height:1.8;max-width:300px}
footer .bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:34px;padding-top:20px;font-size:13px;color:rgba(255,255,255,.5);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* ===== 滚动揭示动画 ===== */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ===== Hero 主视觉图 ===== */
.hero-img{
  width:100%;height:auto;border-radius:22px;border:1px solid var(--line);
  box-shadow:var(--shadow-lg);transform:rotate(1.2deg);
}

/* ===== 客户案例 ===== */
.case-card{overflow:hidden;padding:0}
.case-card .case-media{aspect-ratio:4/3;overflow:hidden}
.case-card .case-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.case-card:hover .case-media img{transform:scale(1.045)}
.case-card .case-body{padding:22px 26px 26px}
.case-card .case-body h3{font-size:18px;color:var(--ink);font-weight:800;margin:10px 0 8px}
.case-card .case-body>p{color:var(--muted);font-size:14.5px}
.case-stats{list-style:none;display:flex;margin-top:16px;border-top:1px solid var(--line);padding-top:14px}
.case-stats li{flex:1;text-align:center}
.case-stats li b{display:block;font-size:19px;font-weight:850;color:var(--brand-700)}
.case-stats li span{font-size:12px;color:var(--muted)}

/* ===== 替代9大岗位 ===== */
.replace{background:#fff}
.replace-grid{grid-template-columns:repeat(3,1fr)}
.replace .rcard{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s}
.replace .rcard:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:rgba(124,77,255,.35)}
.replace .rcard .ri{width:50px;height:50px;border-radius:14px;background:linear-gradient(135deg,var(--brand),var(--blue));display:grid;place-items:center;font-size:24px;margin-bottom:14px}
.replace .rcard h3{font-size:17px;color:var(--ink);font-weight:800;margin-bottom:7px}
.replace .rcard p{font-size:13.8px;color:var(--muted)}
.replace-foot{margin-top:34px;text-align:center;font-size:16px;font-weight:800;color:var(--brand-700);background:rgba(124,77,255,.08);border:1px dashed rgba(124,77,255,.35);border-radius:14px;padding:16px}

/* ===== 商业模式三支柱 ===== */
.model{background:linear-gradient(180deg,#15162A,#221B47);color:#fff}
.model .section-head h2{color:#fff}
.model .section-head p{color:rgba(255,255,255,.7)}
.model-grid{grid-template-columns:repeat(3,1fr)}
.model .mcard{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:18px;padding:30px;transition:transform .2s,background .2s}
.model .mcard:hover{transform:translateY(-5px);background:rgba(255,255,255,.1)}
.model .mcard .mnum{font-size:13px;font-weight:800;color:rgba(255,255,255,.5);letter-spacing:.16em;margin-bottom:12px}
.model .mcard h3{font-size:20px;font-weight:800;margin-bottom:10px;color:#fff}
.model .mcard p{font-size:14px;color:rgba(255,255,255,.66)}
.model .mtag{display:inline-block;margin-top:16px;font-size:12.5px;font-weight:700;color:#fff;background:linear-gradient(135deg,var(--brand),var(--blue));padding:5px 13px;border-radius:999px}
.model .model-formula{margin-top:34px;text-align:center;font-size:18px;font-weight:800;color:#fff}
.model .model-formula span{color:var(--brand);margin:0 12px}
.model .grid-3 .card{text-align:center;padding:34px 24px}
.model .grid-4.plan{margin-top:8px}

/* ===== 响应式 ===== */
/* 中等宽度屏幕：菜单收进抽屉，避免挤压竖排 */
@media(max-width:1200px){
  .nav nav,.nav .nav-cta .btn-ghost{display:none}
  .mobile-toggle{display:block}
  .nav nav.open{display:flex;position:absolute;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;padding:14px 22px;gap:14px;box-shadow:var(--shadow)}
  .nav nav.open ul{flex-direction:column;gap:14px}
  .nav nav.open a{font-size:15px}
}
@media(max-width:980px){
  .hero .container{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:36px}
  .hero-visual{max-width:440px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .adv-grid{grid-template-columns:repeat(2,1fr)}
  .replace-grid,.model-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band .container{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(3,1fr)}
  footer .top{grid-template-columns:1fr 1fr}
  .nav nav,.nav .nav-cta .btn-ghost{display:none}
  .mobile-toggle{display:block}
}
@media(max-width:680px){
  section{padding:60px 0}
  .section-head h2{font-size:27px}
  .nav nav,.nav .nav-cta .btn-ghost{display:none}
  .mobile-toggle{display:block}
  .nav nav.open{display:flex;position:absolute;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;padding:14px 22px;gap:14px;box-shadow:var(--shadow)}
  .hero h1{font-size:30px}
  .grid-2,.grid-3,.grid-4,.adv-grid,.replace-grid,.model-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .field.row2{grid-template-columns:1fr}
  footer .top{grid-template-columns:1fr}
  .profit-table{overflow-x:auto}
}