:root{
  --ink:#161226;
  --ink-2:#3b3550;
  --ink-3:#6f6884;
  --brand:#ff4d2e;
  --brand-2:#ff2d78;
  --brand-3:#00bfa5;
  --line:rgba(22,18,38,.09);
  --card:#ffffff;
  --shadow-sm:0 6px 20px rgba(28,18,44,.05);
  --shadow-md:0 16px 38px rgba(28,18,44,.10);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:92px;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:15px;
  line-height:1.7;
  color:var(--ink-2);
  background:#fffdfb;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(900px 520px at 8% -6%, rgba(255,168,88,.30), transparent 66%),
    radial-gradient(820px 480px at 94% 4%, rgba(255,72,140,.22), transparent 66%),
    radial-gradient(900px 620px at 50% 104%, rgba(0,191,165,.18), transparent 68%),
    linear-gradient(180deg,#fffdfb 0%,#fff9f5 55%,#fdfbfa 100%);
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.32;font-weight:800;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}
.section{padding:64px 0;position:relative;}
.section-sm{padding:26px 0 48px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:800;letter-spacing:.14em;
  color:#e8380f;background:#fff1ea;border:1px solid #ffd6c7;
  padding:6px 13px;border-radius:999px;
}
.sec-head{max-width:760px;margin:0 auto 34px;text-align:center;}
.sec-head h2{font-size:clamp(22px,3.3vw,33px);margin:14px 0 12px;}
.sec-head p{color:var(--ink-3);font-size:15.5px;line-height:1.85;}
.sec-head.left{margin-left:0;text-align:left;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;font-family:inherit;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease;
}
.btn-primary{
  color:#fff;
  background:linear-gradient(135deg,#ff7a2b 0%,#ff2d78 100%);
  box-shadow:0 12px 26px rgba(255,60,90,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(255,60,90,.36);}
.btn-primary:active{transform:translateY(0) scale(.985);}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:var(--shadow-sm);}
.btn-ghost:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:rgba(255,77,46,.32);color:#e8380f;}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}

/* header */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,253,251,.86);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(22,18,38,.07);
}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 20px;position:relative;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.ai-page-logo{max-height:38px;width:auto;}
.brand-name{font-size:17px;font-weight:900;color:var(--ink);letter-spacing:.02em;}
.nav-menu{flex:1 1 auto;display:flex;justify-content:center;}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:nowrap;}
.nav-links a{
  display:block;padding:9px 12px;font-size:14.5px;font-weight:600;color:var(--ink-2);
  border-radius:10px;transition:color .2s,background .2s;
}
.nav-links a:hover{color:#e8380f;background:#fff1ea;}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:#fff;cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .25s,opacity .25s;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* hero */
.hero{position:relative;padding:64px 0 0;overflow:hidden;}
.hero-glow{position:absolute;inset:0;pointer-events:none;z-index:0;}
.hero-glow::before{
  content:"";position:absolute;width:560px;height:560px;border-radius:50%;
  top:-220px;right:-140px;
  background:radial-gradient(circle,rgba(255,122,60,.26),transparent 68%);
}
.hero-glow::after{
  content:"";position:absolute;width:460px;height:460px;border-radius:50%;
  bottom:-260px;left:-160px;
  background:radial-gradient(circle,rgba(0,191,165,.20),transparent 70%);
}
.hero-inner{position:relative;z-index:1;text-align:center;padding-bottom:46px;}
.hero h1{
  font-size:clamp(28px,5vw,52px);
  margin:20px auto 18px;
  max-width:900px;
  letter-spacing:-.02em;
}
.hero h1 em{font-style:normal;color:#e8380f;}
.hero-sub{max-width:760px;margin:0 auto;color:var(--ink-3);font-size:16px;line-height:1.9;}
.hero-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:30px;}
.hero-points{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 26px;margin-top:26px;}
.hero-points li{position:relative;padding-left:20px;font-size:14.5px;font-weight:600;color:var(--ink-2);}
.hero-points li::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:9px;height:9px;border-radius:50%;
  background:linear-gradient(135deg,#ff7a2b,#ff2d78);
}
.marquee{
  position:relative;z-index:1;overflow:hidden;padding:12px 0;
  border-top:1px solid rgba(22,18,38,.07);border-bottom:1px solid rgba(22,18,38,.07);
  background:rgba(255,255,255,.62);
}
.marquee-track{display:flex;width:max-content;animation:marqueeMove 38s linear infinite;}
.marquee:hover .marquee-track{animation-play-state:paused;}
.marquee-group{display:flex;align-items:center;gap:10px;padding-right:10px;}
.chip{
  display:inline-flex;align-items:center;white-space:nowrap;
  padding:7px 15px;border-radius:999px;font-size:13.5px;font-weight:600;
  color:var(--ink-2);background:#fff;border:1px solid var(--line);
}
@keyframes marqueeMove{from{transform:translateX(0);}to{transform:translateX(-50%);}}

/* metrics */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.metric{
  background:rgba(255,255,255,.9);border:1px solid var(--line);border-radius:16px;
  padding:20px 16px;text-align:center;box-shadow:var(--shadow-sm);
  transition:transform .25s,box-shadow .25s;
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.metric strong{display:block;font-size:28px;font-weight:900;color:#e8380f;line-height:1.2;}
.metric span{display:block;margin-top:4px;font-size:13.5px;color:var(--ink-3);}

/* generic grids & cards */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;align-items:stretch;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;align-items:stretch;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;align-items:stretch;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(255,77,46,.28);}
.card h3{font-size:16.5px;margin-bottom:8px;}
.card p{color:var(--ink-3);font-size:14.5px;line-height:1.8;}
.card-icon{
  width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  margin-bottom:14px;font-size:15px;font-weight:900;color:#fff;
  background:linear-gradient(135deg,#ff7a2b,#ff2d78);
  box-shadow:0 8px 18px rgba(255,60,90,.22);
}
.card-icon.teal{background:linear-gradient(135deg,#12c8a8,#0e9fd8);box-shadow:0 8px 18px rgba(14,159,216,.22);}
.card-icon.violet{background:linear-gradient(135deg,#8b5cf6,#ff2d78);box-shadow:0 8px 18px rgba(139,92,246,.22);}

/* split */
.split{display:grid;grid-template-columns:1.15fr .85fr;gap:34px;align-items:start;}
.prose p{color:var(--ink-3);font-size:15px;line-height:1.9;margin-bottom:14px;}
.prose p:last-child{margin-bottom:0;}
.point-list{display:grid;gap:12px;}
.point-item{
  background:rgba(255,255,255,.9);border:1px solid var(--line);border-radius:14px;padding:15px 17px;
  box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s;
}
.point-item:hover{transform:translateX(3px);box-shadow:var(--shadow-md);}
.point-item strong{display:block;font-size:14.5px;color:var(--ink);margin-bottom:3px;}
.point-item span{font-size:13.5px;color:var(--ink-3);line-height:1.7;}

/* tags */
.tag-cloud{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px;}
.tag{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:999px;
  font-size:13.5px;font-weight:600;color:var(--ink-2);
  background:#fff;border:1px solid var(--line);
  transition:transform .2s,color .2s,border-color .2s,box-shadow .2s;
}
.tag:hover{transform:translateY(-2px);color:#e8380f;border-color:rgba(255,77,46,.35);box-shadow:0 8px 18px rgba(255,60,90,.12);}

/* studio */
.studio-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:32px;align-items:start;}
.mini-card{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;
  box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s,border-color .25s;
}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(255,77,46,.28);}
.mini-card h3{font-size:15.5px;margin-bottom:6px;}
.mini-card p{font-size:13.8px;color:var(--ink-3);line-height:1.75;}

/* timeline */
.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-top:6px;}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 18px;
  box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.step-num{
  width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:13.5px;font-weight:900;color:#fff;margin-bottom:12px;
  background:linear-gradient(135deg,#ff7a2b,#ff2d78);
}
.step h3{font-size:15px;margin-bottom:6px;}
.step p{font-size:13.5px;color:var(--ink-3);line-height:1.75;}

/* cases */
.case-hero{
  border-radius:20px;overflow:hidden;border:1px solid var(--line);background:#fff;
  box-shadow:var(--shadow-md);margin-bottom:18px;
}
.case-hero img{width:100%;aspect-ratio:16/7;object-fit:cover;}
.case-card{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s;}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.case-figure{margin:0;overflow:hidden;}
.case-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .45s ease;}
.case-card:hover .case-figure img{transform:scale(1.04);}
.case-body{padding:18px 20px 22px;}
.case-body h3{font-size:16px;margin-bottom:6px;}
.case-body p{font-size:14px;color:var(--ink-3);line-height:1.8;}

/* review */
.rating-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:16px;margin-bottom:22px;align-items:stretch;}
.rating-card{
  background:linear-gradient(135deg,#fff3e9 0%,#ffe8f1 58%,#e9faf6 100%);
  border:1px solid rgba(255,77,46,.20);border-radius:20px;padding:26px;
  box-shadow:0 16px 38px rgba(255,77,46,.12);
}
.rating-card .label{font-size:13.5px;font-weight:700;color:#a8412a;letter-spacing:.06em;}
.rating-score{display:flex;align-items:baseline;gap:6px;margin:10px 0 6px;}
.rating-score b{font-size:46px;line-height:1;font-weight:900;color:#e8380f;}
.rating-score span{font-size:15px;color:#8a5a4b;font-weight:700;}
.stars{color:#ff8a00;font-size:19px;letter-spacing:4px;line-height:1;}
.rating-card p{margin-top:12px;font-size:14px;color:#6a4a3e;line-height:1.8;}
.review-note{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;box-shadow:var(--shadow-sm);
}
.review-note h3{font-size:17px;margin-bottom:12px;}
.review-note ul{display:grid;gap:10px;}
.review-note li{position:relative;padding-left:22px;font-size:14.3px;color:var(--ink-3);line-height:1.8;}
.review-note li::before{
  content:"";position:absolute;left:0;top:9px;width:9px;height:9px;border-radius:3px;
  background:linear-gradient(135deg,#12c8a8,#0e9fd8);
}

/* tables */
.table-wrap{
  overflow-x:auto;border-radius:18px;border:1px solid var(--line);background:#fff;
  box-shadow:var(--shadow-sm);-webkit-overflow-scrolling:touch;
}
table{width:100%;border-collapse:collapse;min-width:680px;font-size:14.3px;}
thead th{
  background:linear-gradient(135deg,#fff1ea,#ffe9f2);
  color:var(--ink);font-weight:800;font-size:14px;text-align:left;
  padding:14px 16px;border-bottom:1px solid var(--line);white-space:nowrap;
}
tbody td{padding:14px 16px;border-bottom:1px solid var(--line);color:var(--ink-3);line-height:1.75;vertical-align:top;}
tbody td:first-child{color:var(--ink);font-weight:700;}
tbody tr:last-child td{border-bottom:none;}
tbody tr:hover{background:#fffaf7;}
.td-strong{color:#e8380f !important;font-weight:700;}
.table-note{margin-top:12px;font-size:13.5px;color:var(--ink-3);}

/* reviews */
.review-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;
  box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:12px;
  transition:transform .25s,box-shadow .25s,border-color .25s;
}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(255,77,46,.25);}
.review-text{font-size:14.3px;color:var(--ink-2);line-height:1.85;}
.review-user{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:4px;border-top:1px solid var(--line);}
.avatar{
  width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:900;color:#fff;flex:0 0 auto;
  background:linear-gradient(135deg,#ff7a2b,#ff2d78);
}
.avatar.teal{background:linear-gradient(135deg,#12c8a8,#0e9fd8);}
.avatar.violet{background:linear-gradient(135deg,#8b5cf6,#ff2d78);}
.avatar.blue{background:linear-gradient(135deg,#3b82f6,#00bfa5);}
.avatar.amber{background:linear-gradient(135deg,#f59e0b,#ff4d2e);}
.avatar.slate{background:linear-gradient(135deg,#64748b,#0ea5e9);}
.review-user strong{display:block;font-size:14px;color:var(--ink);line-height:1.4;}
.review-user span{font-size:12.5px;color:var(--ink-3);}

/* insights */
.insight-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:24px;align-items:start;}
.article-list{display:grid;gap:10px;}
.article-item{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:15px 18px;
  box-shadow:var(--shadow-sm);transition:transform .22s,box-shadow .22s,border-color .22s;
}
.article-item:hover{transform:translateX(3px);box-shadow:var(--shadow-md);border-color:rgba(255,77,46,.3);}
.article-item strong{font-size:14.5px;color:var(--ink);font-weight:700;line-height:1.6;}
.article-item em{font-style:normal;font-size:12.5px;color:#e8380f;font-weight:700;white-space:nowrap;}
.side-block{background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:var(--shadow-sm);}
.side-block h3{font-size:15.5px;margin-bottom:12px;}
.side-block + .side-block{margin-top:14px;}

/* form */
.match-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:28px;align-items:start;}
.lead-form{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;
  box-shadow:var(--shadow-md);display:grid;gap:14px;
}
.field{display:block;}
.field span{display:block;font-size:13.5px;font-weight:700;color:var(--ink);margin-bottom:6px;}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:12px;border:1px solid rgba(22,18,38,.14);
  background:#fffdfb;color:var(--ink);font-size:14.5px;font-family:inherit;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.field textarea{resize:vertical;min-height:104px;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:#ff8a5c;background:#fff;box-shadow:0 0 0 4px rgba(255,120,60,.14);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;}

/* faq */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:start;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  box-shadow:var(--shadow-sm);transition:box-shadow .25s,border-color .25s;
}
.faq-item[open]{border-color:rgba(255,77,46,.32);box-shadow:0 14px 30px rgba(255,60,90,.12);}
.faq-item summary{
  cursor:pointer;list-style:none;display:flex;align-items:flex-start;justify-content:space-between;gap:12px;
  padding:15px 18px;font-size:14.8px;font-weight:700;color:var(--ink);line-height:1.65;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:19px;line-height:1;font-weight:700;color:#ff4d2e;
  transform:translateY(1px);transition:transform .2s;
}
.faq-item[open] summary::after{content:"−";}
.faq-body{padding:0 18px 16px;font-size:14.2px;color:var(--ink-3);line-height:1.85;}

/* partner */
.partner-panel{
  background:linear-gradient(135deg,#fff4ec 0%,#ffe9f2 52%,#e9faf6 100%);
  border:1px solid rgba(255,77,46,.18);border-radius:22px;padding:34px;
  box-shadow:0 18px 42px rgba(255,77,46,.12);
}
.partner-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:26px;align-items:center;}
.partner-panel h2{font-size:clamp(21px,3vw,29px);margin-bottom:12px;}
.partner-panel p{color:#6a4a3e;font-size:14.6px;line-height:1.85;}

/* contact */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:26px;align-items:start;}
.contact-list{display:grid;gap:10px;margin-top:6px;}
.contact-row{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 18px;
  box-shadow:var(--shadow-sm);transition:transform .22s,box-shadow .22s;
}
.contact-row:hover{transform:translateX(3px);box-shadow:var(--shadow-md);}
.contact-row b{font-size:14px;color:var(--ink);font-weight:700;}
.contact-row span{font-size:14px;color:var(--ink-3);word-break:break-all;}
.qr-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px;text-align:center;
  box-shadow:var(--shadow-sm);
}
.qr-card img{width:200px;max-width:100%;margin:0 auto;border-radius:14px;border:1px solid var(--line);}
.qr-card strong{display:block;margin-top:14px;font-size:15px;color:var(--ink);}
.qr-card p{font-size:13.5px;color:var(--ink-3);margin-top:6px;line-height:1.75;}

/* footer */
.site-footer{
  background:#fff6f1;border-top:1px solid rgba(22,18,38,.08);
  color:#3b3550;padding:36px 0 22px;margin-top:8px;
}
.footer-top{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:start;}
.footer-brand strong{display:block;font-size:18px;font-weight:900;color:#161226;margin-bottom:10px;}
.footer-brand p{font-size:14px;color:#5a5270;line-height:1.85;max-width:440px;}
.footer-brand .btn{margin-top:14px;}
.footer-title{font-size:15px;font-weight:800;color:#161226;margin-bottom:12px;}
.footer-links ul{display:flex;flex-wrap:wrap;gap:10px;}
.footer-links a{
  display:inline-flex;padding:7px 14px;border-radius:999px;font-size:13.5px;
  color:#3b3550;background:#fff;border:1px solid rgba(22,18,38,.10);
  transition:color .2s,border-color .2s,transform .2s;
}
.footer-links a:hover{color:#e8380f;border-color:rgba(255,77,46,.35);transform:translateY(-2px);}
.footer-bottom{
  margin-top:24px;padding-top:16px;border-top:1px solid rgba(22,18,38,.08);
  font-size:13px;color:#6f6884;
}

/* floating tools */
.float-tools{position:fixed;right:16px;bottom:22px;z-index:60;display:flex;flex-direction:column;gap:10px;}
.float-btn{
  width:52px;height:52px;border-radius:50%;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:12.5px;font-weight:800;font-family:inherit;
  cursor:pointer;box-shadow:var(--shadow-md);transition:transform .22s,box-shadow .22s,background .22s;
  display:flex;align-items:center;justify-content:center;
}
.float-btn:hover{transform:translateY(-3px);}
.float-btn-main{background:linear-gradient(135deg,#ff7a2b,#ff2d78);color:#fff;border-color:transparent;}
#backTop{opacity:0;pointer-events:none;transition:opacity .25s,transform .22s;}
#backTop.show{opacity:1;pointer-events:auto;}
.kefu-panel{
  position:fixed;right:16px;bottom:150px;z-index:61;width:238px;
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px;
  box-shadow:0 20px 44px rgba(28,18,44,.16);
  animation:popIn .24s ease both;
}
.kefu-panel img{width:100%;border-radius:12px;border:1px solid var(--line);}
.kefu-panel p{font-size:13.5px;color:var(--ink-3);text-align:center;margin-top:10px;line-height:1.7;}
.kefu-panel ul{margin-top:10px;display:grid;gap:6px;}
.kefu-panel li{font-size:12.8px;color:var(--ink-2);background:#fff8f4;border-radius:9px;padding:7px 10px;}
@keyframes popIn{from{opacity:0;transform:translateY(10px) scale(.97);}to{opacity:1;transform:none;}}

/* reveal */
.reveal{will-change:transform,opacity;}
.reveal.in{animation:riseIn .62s cubic-bezier(.22,.72,.28,1) both;}
@keyframes riseIn{from{opacity:0;transform:translateY(18px);}to{opacity:1;transform:translateY(0);}}

@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .timeline{grid-template-columns:repeat(3,1fr);}
  .split,.studio-grid,.insight-grid,.match-grid,.contact-grid,.partner-grid{grid-template-columns:1fr;gap:24px;}
  .rating-wrap{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr;gap:22px;}
}
@media (max-width:860px){
  html{scroll-padding-top:78px;}
  .nav-toggle{display:flex;}
  .nav-menu{position:absolute;left:20px;right:20px;top:100%;display:none;justify-content:flex-start;}
  .nav-menu.open{display:flex;}
  .nav-links{
    flex-direction:column;align-items:stretch;width:100%;
    background:#fff;border:1px solid var(--line);border-radius:16px;padding:8px;
    box-shadow:var(--shadow-md);
  }
  .nav-links li{width:100%;}
  .nav-links a{padding:11px 14px;}
  .brand-name{font-size:16px;}
  .ai-page-logo{max-height:32px;}
}
@media (max-width:700px){
  .section{padding:46px 0;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .timeline{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .field-row{grid-template-columns:1fr;}
  .hero{padding-top:44px;}
  .hero-sub{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .partner-panel{padding:24px;}
  .lead-form{padding:20px;}
  .review-note,.rating-card{padding:20px;}
  .qr-card img{width:180px;}
  .kefu-panel{bottom:140px;width:calc(100% - 32px);max-width:260px;}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .marquee-track{animation:none;}
  .reveal.in{animation:none;}
}