:root{
  --orange:#ff5a1f;
  --orange-deep:#e8420a;
  --orange-light:#ff8a4c;
  --orange-soft:#fff1e9;
  --ink:#1a1d23;
  --ink-2:#3c424c;
  --ink-3:#6b7280;
  --line:#f0e4dc;
  --bg:#ffffff;
  --bg-soft:#fffaf6;
  --radius:16px;
  --shadow:0 10px 30px rgba(255,90,31,.10);
  --shadow-hover:0 18px 44px rgba(255,90,31,.22);
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{text-decoration:none;color:inherit;}
ul{list-style:none;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
section{padding:84px 0;}
.section-head{text-align:center;max-width:780px;margin:0 auto 52px;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.12em;
  color:var(--orange);background:var(--orange-soft);
  padding:6px 16px;border-radius:999px;margin-bottom:16px;
}
.section-head h2{font-size:34px;font-weight:800;letter-spacing:-.01em;line-height:1.25;}
.section-head h2 span{color:var(--orange);}
.section-head p{margin-top:14px;color:var(--ink-3);font-size:16px;}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:700;padding:14px 30px;border-radius:999px;
  border:none;cursor:pointer;transition:transform .22s ease,box-shadow .22s ease,background .22s ease;
  white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--orange),var(--orange-deep));color:#fff;box-shadow:0 8px 22px rgba(255,90,31,.35);}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 32px rgba(255,90,31,.45);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--orange);border:2px solid var(--orange);}
.btn-ghost:hover{background:var(--orange-soft);transform:translateY(-3px);}

/* Nav */
.header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--ink);}
.brand .ai-page-logo{max-width:130px;height:auto;}
.nav-links{display:flex;align-items:center;gap:0;}
.nav-links a{
  font-size:14px;font-weight:600;color:var(--ink-2);padding:8px 12px;border-radius:8px;
  transition:color .2s,background .2s;
}
.nav-links a:hover{color:var(--orange);background:var(--orange-soft);}
.nav-cta{display:flex;align-items:center;gap:12px;}
.nav-cta .btn{padding:10px 22px;font-size:14px;}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;flex-direction:column;gap:5px;}
.nav-toggle span{display:block;width:24px;height:2.5px;background:var(--ink);border-radius:2px;transition:.3s;}

/* Hero - no images */
.hero{
  position:relative;overflow:hidden;padding:90px 0 100px;
  background:
    radial-gradient(circle at 12% 20%,rgba(255,138,76,.16),transparent 42%),
    radial-gradient(circle at 88% 12%,rgba(255,90,31,.14),transparent 46%),
    linear-gradient(160deg,#fffaf6 0%,#fff3ea 55%,#ffe9dc 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,90,31,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,90,31,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 30%,#000 30%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%,#000 30%,transparent 78%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  color:var(--orange-deep);background:#fff;border:1px solid #ffd9c5;
  padding:7px 16px;border-radius:999px;box-shadow:0 4px 14px rgba(255,90,31,.12);margin-bottom:22px;
}
.hero-tag .dot{width:8px;height:8px;border-radius:50%;background:var(--orange);animation:pulse 1.8s infinite;}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(255,90,31,.5);}50%{box-shadow:0 0 0 8px rgba(255,90,31,0);}}
.hero h1{font-size:46px;font-weight:900;line-height:1.18;letter-spacing:-.02em;}
.hero h1 em{font-style:normal;color:var(--orange);position:relative;}
.hero h1 em::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:10px;background:rgba(255,90,31,.18);z-index:-1;border-radius:4px;}
.hero p.lead{margin-top:22px;font-size:17px;color:var(--ink-2);max-width:540px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:16px;margin-top:34px;}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:44px;max-width:560px;}
.hero-stat{background:#fff;border-radius:14px;padding:18px 16px;box-shadow:var(--shadow);border:1px solid #ffe6d8;}
.hero-stat b{display:block;font-size:26px;font-weight:900;color:var(--orange);line-height:1.1;}
.hero-stat span{font-size:13px;color:var(--ink-3);}
.hero-visual{position:relative;}
.hero-panel{
  background:#fff;border-radius:24px;padding:28px;box-shadow:0 24px 60px rgba(255,90,31,.16);
  border:1px solid #ffe6d8;
}
.hero-panel h3{font-size:17px;font-weight:800;margin-bottom:18px;display:flex;align-items:center;gap:8px;}
.hero-panel h3::before{content:"";width:10px;height:10px;border-radius:3px;background:var(--orange);}
.mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.mini-card{
  background:linear-gradient(135deg,#fff8f3,#fff);border:1px solid #ffe6d8;border-radius:12px;
  padding:14px;transition:transform .25s,box-shadow .25s;
}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.mini-card strong{font-size:14px;display:block;color:var(--ink);}
.mini-card small{font-size:12px;color:var(--ink-3);}
.hero-flow{margin-top:20px;display:flex;align-items:center;gap:8px;font-size:12px;color:var(--ink-3);flex-wrap:wrap;}
.chip{background:var(--orange-soft);color:var(--orange-deep);padding:4px 12px;border-radius:999px;font-weight:600;}

/* Marquee */
.marquee-wrap{background:var(--ink);padding:16px 0;overflow:hidden;}
.marquee{display:flex;gap:44px;white-space:nowrap;animation:scroll 30s linear infinite;width:max-content;}
.marquee span{color:#fff;font-size:14px;font-weight:600;opacity:.86;}
.marquee span::before{content:"◆";color:var(--orange-light);margin-right:10px;font-size:9px;vertical-align:middle;}
@keyframes scroll{from{transform:translateX(0);}to{transform:translateX(-50%);}}

/* Metrics */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.metric{
  background:#fff;border-radius:var(--radius);padding:34px 24px;text-align:center;
  border:1px solid var(--line);box-shadow:var(--shadow);transition:transform .28s,box-shadow .28s;
}
.metric:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.metric b{font-size:40px;font-weight:900;color:var(--orange);line-height:1;}
.metric b small{font-size:18px;}
.metric p{margin-top:10px;font-size:15px;color:var(--ink-2);font-weight:600;}
.metric span{font-size:13px;color:var(--ink-3);}

/* About */
.about-wrap{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
.about-text h2{font-size:32px;font-weight:800;line-height:1.3;margin-bottom:18px;}
.about-text h2 span{color:var(--orange);}
.about-text p{color:var(--ink-2);margin-bottom:16px;font-size:15.5px;}
.about-list{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:26px;}
.about-item{display:flex;align-items:center;gap:10px;font-weight:600;font-size:14.5px;color:var(--ink);}
.about-item .tick{
  width:22px;height:22px;border-radius:50%;background:var(--orange);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:12px;flex-shrink:0;
}
.about-media{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.about-media img{border-radius:var(--radius);box-shadow:var(--shadow);object-fit:cover;width:100%;height:100%;}
.about-media .tall{grid-row:span 2;}

/* Services */
.services{background:var(--bg-soft);}
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.service-card{
  background:#fff;border-radius:var(--radius);padding:30px 26px;border:1px solid var(--line);
  transition:transform .28s,box-shadow .28s,border-color .28s;position:relative;overflow:hidden;
}
.service-card::after{
  content:"";position:absolute;top:0;left:0;width:0;height:3px;background:linear-gradient(90deg,var(--orange),var(--orange-light));
  transition:width .35s;
}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:#ffd9c5;}
.service-card:hover::after{width:100%;}
.service-icon{
  width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,var(--orange),var(--orange-light));
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.service-icon svg{width:26px;height:26px;fill:none;stroke:#fff;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.service-card h3{font-size:18px;font-weight:800;margin-bottom:10px;}
.service-card p{font-size:14px;color:var(--ink-3);line-height:1.7;}

/* Flow steps */
.flow{background:linear-gradient(180deg,#fff,#fffaf6);}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;position:relative;}
.step{
  background:#fff;border-radius:var(--radius);padding:28px 20px;border:1px solid var(--line);
  text-align:center;transition:transform .28s,box-shadow .28s;
}
.step:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.step-num{
  width:48px;height:48px;border-radius:50%;margin:0 auto 16px;
  background:linear-gradient(135deg,var(--orange),var(--orange-deep));color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:900;font-size:18px;
  box-shadow:0 8px 18px rgba(255,90,31,.3);
}
.step h4{font-size:16px;font-weight:800;margin-bottom:8px;}
.step p{font-size:13px;color:var(--ink-3);}

/* Industry solutions */
.industry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.industry-card{
  border-radius:var(--radius);padding:28px;background:#fff;border:1px solid var(--line);
  display:flex;gap:16px;align-items:flex-start;transition:transform .28s,box-shadow .28s;
}
.industry-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);}
.industry-ic{
  width:46px;height:46px;flex-shrink:0;border-radius:12px;background:var(--orange-soft);
  display:flex;align-items:center;justify-content:center;
}
.industry-ic svg{width:24px;height:24px;fill:none;stroke:var(--orange);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.industry-card h4{font-size:16px;font-weight:800;margin-bottom:6px;}
.industry-card p{font-size:13.5px;color:var(--ink-3);}

/* Network */
.network{background:var(--ink);color:#fff;}
.network .section-head h2{color:#fff;}
.network .section-head p{color:rgba(255,255,255,.62);}
.network .eyebrow{background:rgba(255,90,31,.18);color:var(--orange-light);}
.net-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.net-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:14px;
  padding:24px;transition:background .25s,border-color .25s,transform .25s;
}
.net-card:hover{background:rgba(255,90,31,.12);border-color:rgba(255,90,31,.4);transform:translateY(-4px);}
.net-card h4{font-size:16px;font-weight:800;margin-bottom:6px;color:#fff;}
.net-card p{font-size:13px;color:rgba(255,255,255,.6);}
.net-card .city{font-size:12px;color:var(--orange-light);font-weight:700;margin-bottom:6px;display:block;}

/* Compare */
.compare-table{width:100%;border-collapse:separate;border-spacing:0;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);}
.compare-table thead th{
  background:linear-gradient(135deg,var(--orange),var(--orange-deep));color:#fff;
  padding:18px 20px;font-size:15px;text-align:left;font-weight:700;
}
.compare-table thead th:nth-child(2),.compare-table thead th:nth-child(3){text-align:center;}
.compare-table tbody td{padding:16px 20px;font-size:14px;border-top:1px solid var(--line);color:var(--ink-2);}
.compare-table tbody tr:hover{background:var(--orange-soft);}
.compare-table td:nth-child(2),.compare-table td:nth-child(3){text-align:center;font-weight:600;}
.yes{color:#16a34a;font-weight:700;}
.no{color:#9ca3af;}
.compare-score{
  margin-top:30px;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.score-card{
  background:linear-gradient(135deg,#fff8f3,#fff);border:1px solid #ffe6d8;border-radius:var(--radius);
  padding:28px;text-align:center;box-shadow:var(--shadow);
}
.score-card .stars{color:var(--orange);font-size:22px;letter-spacing:3px;}
.score-card b{display:block;font-size:42px;font-weight:900;color:var(--orange);line-height:1.1;margin:8px 0 4px;}
.score-card b small{font-size:18px;color:var(--ink-3);font-weight:600;}
.score-card span{font-size:14px;color:var(--ink-3);}

/* Token price */
.token{background:var(--bg-soft);}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.price-card{
  background:#fff;border-radius:var(--radius);border:1px solid var(--line);padding:32px 26px;
  transition:transform .28s,box-shadow .28s;position:relative;
}
.price-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.price-card.featured{border:2px solid var(--orange);box-shadow:var(--shadow-hover);}
.price-card.featured::before{
  content:"推荐";position:absolute;top:-13px;right:24px;background:linear-gradient(135deg,var(--orange),var(--orange-deep));
  color:#fff;font-size:12px;font-weight:700;padding:4px 14px;border-radius:999px;
}
.price-card h4{font-size:18px;font-weight:800;margin-bottom:6px;}
.price-card .price{font-size:34px;font-weight:900;color:var(--orange);line-height:1.2;margin:10px 0;}
.price-card .price small{font-size:14px;color:var(--ink-3);font-weight:600;}
.price-card ul{margin-top:16px;}
.price-card ul li{font-size:14px;color:var(--ink-2);padding:7px 0 7px 24px;position:relative;}
.price-card ul li::before{content:"✓";position:absolute;left:0;color:var(--orange);font-weight:900;}

/* Cases */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
.case-card{
  background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s;
}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.case-media{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--orange-soft);}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s;}
.case-card:hover .case-media img{transform:scale(1.06);}
.case-body{padding:24px;}
.case-body .tag{display:inline-block;font-size:12px;font-weight:700;color:var(--orange);background:var(--orange-soft);padding:4px 12px;border-radius:999px;margin-bottom:12px;}
.case-body h4{font-size:18px;font-weight:800;margin-bottom:8px;}
.case-body p{font-size:14px;color:var(--ink-3);}
.case-extra{display:grid;grid-template-columns:1fr 3fr;gap:20px;margin-top:28px;align-items:center;}
.case-extra img{border-radius:var(--radius);box-shadow:var(--shadow);}

/* Reviews */
.reviews{background:var(--bg-soft);}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.review-card{
  background:#fff;border-radius:var(--radius);padding:28px;border:1px solid var(--line);
  transition:transform .28s,box-shadow .28s;display:flex;flex-direction:column;
}
.review-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.review-stars{color:var(--orange);font-size:15px;letter-spacing:2px;margin-bottom:14px;}
.review-card p{font-size:14.5px;color:var(--ink-2);flex:1;line-height:1.75;}
.review-user{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line);}
.avatar{
  width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--orange),var(--orange-light));
  color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;flex-shrink:0;
}
.review-user b{font-size:14.5px;display:block;}
.review-user span{font-size:12.5px;color:var(--ink-3);}

/* Articles */
.article-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px;}
.article-main{
  background:linear-gradient(135deg,var(--orange),var(--orange-deep));color:#fff;border-radius:var(--radius);
  padding:36px;display:flex;flex-direction:column;justify-content:center;
}
.article-main h4{font-size:22px;font-weight:800;margin-bottom:12px;}
.article-main p{font-size:14.5px;opacity:.9;}
.article-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;
  transition:transform .28s,box-shadow .28s;display:flex;flex-direction:column;justify-content:space-between;
}
.article-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);}
.article-item span{font-size:12px;font-weight:700;color:var(--orange);}
.article-item h4{font-size:16px;font-weight:800;margin:8px 0 10px;line-height:1.4;}
.article-item p{font-size:13px;color:var(--ink-3);}
.article-item a.more{margin-top:14px;font-size:13px;font-weight:700;color:var(--orange);}

/* Tags */
.tag-cloud{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}
.tag-cloud span{
  background:#fff;border:1px solid var(--line);color:var(--ink-2);font-size:14px;font-weight:600;
  padding:9px 20px;border-radius:999px;transition:all .22s;cursor:default;
}
.tag-cloud span:hover{background:var(--orange);color:#fff;border-color:var(--orange);transform:translateY(-3px);}

/* Timeline */
.timeline{position:relative;max-width:820px;margin:0 auto;padding-left:30px;}
.timeline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--orange),#ffd9c5);}
.tl-item{position:relative;padding:0 0 34px 28px;}
.tl-item::before{
  content:"";position:absolute;left:-26px;top:4px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--orange);
}
.tl-item b{font-size:14px;color:var(--orange);font-weight:800;display:block;margin-bottom:4px;}
.tl-item h4{font-size:16px;font-weight:800;margin-bottom:4px;}
.tl-item p{font-size:14px;color:var(--ink-3);}

/* FAQ */
.faq{background:var(--bg-soft);}
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:box-shadow .25s,border-color .25s;}
.faq-item.open{border-color:#ffd9c5;box-shadow:var(--shadow);}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;
  padding:20px 24px;font-size:15.5px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-q .icon{
  width:26px;height:26px;border-radius:50%;background:var(--orange-soft);color:var(--orange);
  display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:400;flex-shrink:0;
  transition:transform .3s,background .3s,color .3s;
}
.faq-item.open .faq-q .icon{transform:rotate(45deg);background:var(--orange);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .38s ease;}
.faq-a p{padding:0 24px 22px;font-size:14.5px;color:var(--ink-3);}

/* Form */
.contact{background:linear-gradient(160deg,#fffaf6,#ffe9dc);}
.contact-wrap{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:start;}
.contact-info h2{font-size:32px;font-weight:800;line-height:1.3;margin-bottom:16px;}
.contact-info h2 span{color:var(--orange);}
.contact-info>p{color:var(--ink-2);margin-bottom:28px;font-size:15.5px;}
.contact-channels{display:flex;flex-direction:column;gap:16px;}
.channel{
  display:flex;align-items:center;gap:14px;background:#fff;border-radius:14px;padding:16px 20px;
  border:1px solid var(--line);transition:transform .24s,box-shadow .24s;
}
.channel:hover{transform:translateX(5px);box-shadow:var(--shadow);}
.channel .ic{
  width:42px;height:42px;border-radius:10px;background:var(--orange-soft);flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
}
.channel .ic svg{width:22px;height:22px;fill:none;stroke:var(--orange);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.channel b{font-size:14px;display:block;color:var(--ink);}
.channel span{font-size:13.5px;color:var(--ink-3);}
.qrcode{margin-top:20px;display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;}
.qrcode img{width:96px;height:96px;object-fit:cover;border-radius:10px;}
.qrcode div b{font-size:14px;display:block;margin-bottom:4px;}
.qrcode div p{font-size:13px;color:var(--ink-3);}
.form-card{background:#fff;border-radius:20px;padding:38px;box-shadow:0 20px 50px rgba(255,90,31,.15);border:1px solid #ffe6d8;}
.form-card h3{font-size:22px;font-weight:800;margin-bottom:6px;}
.form-card>p{font-size:14px;color:var(--ink-3);margin-bottom:24px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13.5px;font-weight:700;margin-bottom:7px;color:var(--ink-2);}
.field label .req{color:var(--orange);}
.field input,.field select,.field textarea{
  width:100%;padding:13px 16px;border:1.5px solid var(--line);border-radius:10px;font-size:14.5px;
  font-family:inherit;color:var(--ink);background:var(--bg-soft);transition:border-color .22s,box-shadow .22s;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--orange);background:#fff;box-shadow:0 0 0 3px rgba(255,90,31,.12);
}
.field textarea{resize:vertical;min-height:110px;}
.form-card .btn{width:100%;margin-top:6px;padding:15px;}
.form-note{font-size:12.5px;color:var(--ink-3);text-align:center;margin-top:14px;}

/* Partner */
.partner{background:#fff;}
.partner-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.partner-card{
  border-radius:var(--radius);padding:32px;border:1px solid var(--line);background:linear-gradient(160deg,#fff,#fffaf6);
  transition:transform .28s,box-shadow .28s;
}
.partner-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.partner-card h4{font-size:18px;font-weight:800;margin-bottom:10px;}
.partner-card p{font-size:14px;color:var(--ink-3);margin-bottom:16px;}
.partner-card ul li{font-size:13.5px;color:var(--ink-2);padding:5px 0 5px 22px;position:relative;}
.partner-card ul li::before{content:"→";position:absolute;left:0;color:var(--orange);font-weight:800;}

/* Friends */
.friends{padding:40px 0;background:var(--bg-soft);border-top:1px solid var(--line);}
.friends-inner{display:flex;flex-wrap:wrap;align-items:center;gap:12px;justify-content:center;}
.friends-inner .label{font-size:13px;font-weight:700;color:var(--ink-3);margin-right:6px;}
.friends-inner a{
  font-size:13px;color:var(--ink-2);background:#fff;border:1px solid var(--line);
  padding:6px 14px;border-radius:8px;transition:all .22s;
}
.friends-inner a:hover{color:var(--orange);border-color:var(--orange);background:var(--orange-soft);}

/* Footer */
.footer{background:var(--ink);color:rgba(255,255,255,.7);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .ai-page-logo{max-width:140px;margin-bottom:16px;background:#fff;padding:8px;border-radius:8px;}
.footer-brand p{font-size:14px;line-height:1.8;max-width:300px;}
.footer-brand .footer-tags{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px;}
.footer-brand .footer-tags span{font-size:12px;background:rgba(255,255,255,.08);padding:4px 10px;border-radius:6px;color:rgba(255,255,255,.6);}
.footer-col h5{color:#fff;font-size:15px;font-weight:800;margin-bottom:18px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:13.5px;color:rgba(255,255,255,.62);transition:color .2s,padding-left .2s;}
.footer-col ul li a:hover{color:var(--orange-light);padding-left:4px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);margin-top:48px;padding:22px 0;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:rgba(255,255,255,.45);
}

/* Floating */
.float-kefu{
  position:fixed;right:22px;bottom:100px;z-index:200;
  width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,var(--orange),var(--orange-deep));
  display:flex;align-items:center;justify-content:center;box-shadow:0 10px 26px rgba(255,90,31,.45);
  cursor:pointer;transition:transform .25s;animation:floatbob 3s ease-in-out infinite;
}
.float-kefu:hover{transform:scale(1.08);}
.float-kefu svg{width:26px;height:26px;fill:none;stroke:#fff;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
@keyframes floatbob{0%,100%{transform:translateY(0);}50%{transform:translateY(-6px);}}
.kefu-pop{
  position:fixed;right:22px;bottom:170px;z-index:201;background:#fff;border-radius:16px;padding:18px;
  box-shadow:0 18px 46px rgba(0,0,0,.18);width:220px;display:none;border:1px solid var(--line);
  animation:fadeUp .3s ease;
}
.kefu-pop.show{display:block;}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px);}to{opacity:1;transform:translateY(0);}}
.kefu-pop img{width:100%;border-radius:10px;margin-bottom:10px;}
.kefu-pop b{font-size:14px;display:block;text-align:center;margin-bottom:6px;}
.kefu-pop p{font-size:12px;color:var(--ink-3);text-align:center;}
.back-top{
  position:fixed;right:22px;bottom:30px;z-index:200;width:48px;height:48px;border-radius:50%;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);cursor:pointer;
  display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .3s,transform .3s;
}
.back-top.show{opacity:1;pointer-events:auto;}
.back-top:hover{transform:translateY(-4px);}
.back-top svg{width:22px;height:22px;fill:none;stroke:var(--orange);stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round;}

/* Reveal animation */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .7s ease,transform .7s ease;}
.reveal.visible{opacity:1;transform:translateY(0);}

/* Responsive */
@media(max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:44px;}
  .hero h1{font-size:38px;}
  .services .service-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(3,1fr);}
  .net-grid{grid-template-columns:repeat(2,1fr);}
  .article-grid{grid-template-columns:1fr 1fr;}
  .article-main{grid-column:1/-1;}
  .industry-grid{grid-template-columns:repeat(2,1fr);}
  .about-wrap{grid-template-columns:1fr;}
  .contact-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media(max-width:768px){
  section{padding:60px 0;}
  .section-head h2{font-size:26px;}
  .hero{padding:60px 0 70px;}
  .hero h1{font-size:31px;}
  .hero-stats{grid-template-columns:1fr 1fr 1fr;gap:10px;}
  .hero-stat{padding:14px 10px;}
  .hero-stat b{font-size:20px;}
  .hero-stat span{font-size:11px;}
  .nav-links{
    position:absolute;top:70px;left:0;right:0;background:#fff;flex-direction:column;
    align-items:stretch;padding:12px 16px;gap:0;border-bottom:1px solid var(--line);
    box-shadow:0 14px 28px rgba(0,0,0,.08);display:none;
  }
  .nav-links.open{display:flex;}
  .nav-links a{padding:13px 12px;border-radius:8px;}
  .nav-toggle{display:flex;}
  .nav-cta .btn-ghost{display:none;}
  .metrics{grid-template-columns:1fr 1fr;}
  .service-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr 1fr;}
  .industry-grid{grid-template-columns:1fr;}
  .case-grid{grid-template-columns:1fr;}
  .case-extra{grid-template-columns:1fr;}
  .review-grid{grid-template-columns:1fr;}
  .price-grid{grid-template-columns:1fr;}
  .compare-score{grid-template-columns:1fr;}
  .net-grid{grid-template-columns:1fr;}
  .article-grid{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .form-card{padding:26px 22px;}
  .partner-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .about-media{grid-template-columns:1fr 1fr;}
  .compare-table{font-size:13px;}
  .compare-table thead th,.compare-table tbody td{padding:12px 12px;font-size:13px;}
  .table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
  .float-kefu{right:14px;bottom:86px;width:50px;height:50px;}
  .back-top{right:14px;bottom:22px;width:44px;height:44px;}
  .kefu-pop{right:14px;width:200px;}
  .footer-bottom{flex-direction:column;text-align:center;}
}
@media(max-width:420px){
  .hero-stats{grid-template-columns:1fr 1fr;}
  .steps{grid-template-columns:1fr;}
  .metrics{grid-template-columns:1fr;}
}