:root{
  --primary:#ff3d2e;
  --primary-dark:#d92a1d;
  --accent:#0a0e27;
  --accent2:#12173d;
  --blue:#2b59ff;
  --cyan:#00e0c6;
  --yellow:#ffc400;
  --ink:#0f1226;
  --gray:#5c6075;
  --line:#e8e9f0;
  --bg-soft:#f6f7fb;
  --radius:16px;
  --shadow:0 12px 34px rgba(16,20,60,.10);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,"Segoe UI",sans-serif;
  color:var(--ink);background:#fff;line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
section{scroll-margin-top:84px}

/* ============ 顶部导航 ============ */
header.nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(10,14,39,.92);
  backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.08);transition:background .3s;
}
.nav-inner{max-width:1280px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:10px}
.ai-page-logo{height:40px;width:auto;max-width:100%}
.nav-links{display:flex;align-items:center;gap:0}
.nav-links a{
  color:#cfd3e6;font-size:14px;padding:8px 12px;border-radius:8px;transition:.25s;white-space:nowrap;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.08)}
.nav-cta{display:flex;align-items:center;gap:12px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;cursor:pointer;
  font-size:15px;font-weight:600;border-radius:10px;padding:12px 26px;transition:transform .2s,box-shadow .2s,background .2s;
  font-family:inherit;
}
.btn:active{transform:scale(.97)}
.btn-primary{background:linear-gradient(135deg,#ff5133,#ff2d1a);color:#fff;box-shadow:0 8px 22px rgba(255,61,46,.4)}
.btn-primary:hover{box-shadow:0 12px 30px rgba(255,61,46,.55);transform:translateY(-2px)}
.btn-outline{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.35)}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.1)}
.btn-dark{background:var(--accent);color:#fff}
.btn-dark:hover{background:#1c2250;transform:translateY(-2px)}
.btn-lg{padding:16px 40px;font-size:17px;border-radius:12px}
.menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;flex-direction:column;gap:5px}
.menu-toggle span{width:24px;height:2.5px;background:#fff;border-radius:2px;transition:.3s}

/* ============ Hero ============ */
.hero{
  position:relative;padding:150px 0 100px;color:#fff;overflow:hidden;
  background:
    radial-gradient(circle at 12% 18%,rgba(255,61,46,.28),transparent 42%),
    radial-gradient(circle at 90% 12%,rgba(43,89,255,.30),transparent 46%),
    radial-gradient(circle at 78% 92%,rgba(0,224,198,.18),transparent 45%),
    linear-gradient(160deg,#080b22 0%,#0e1338 55%,#131a45 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;mask-image:radial-gradient(circle at 50% 40%,#000 30%,transparent 78%);
}
.hero-blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.45;pointer-events:none}
.hero-blob.b1{width:340px;height:340px;background:#ff3d2e;top:-80px;right:8%;animation:float 9s ease-in-out infinite}
.hero-blob.b2{width:260px;height:260px;background:#2b59ff;bottom:-60px;left:6%;animation:float 11s ease-in-out infinite reverse}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(26px)}}
.hero-inner{position:relative;z-index:2;max-width:1200px;margin:0 auto;padding:0 24px;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;letter-spacing:.5px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);padding:7px 16px;border-radius:50px;margin-bottom:26px;color:#ffd5cf;
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero h1{font-size:52px;line-height:1.18;font-weight:800;letter-spacing:-.5px;margin-bottom:22px}
.hero h1 .hl{background:linear-gradient(90deg,#ff7a5c,#ffc400 60%,#00e0c6);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:17px;color:#c3c8e0;max-width:560px;margin-bottom:34px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:40px}
.hero-mini{display:flex;gap:26px;flex-wrap:wrap}
.hero-mini li{font-size:14px;color:#a8afcc;display:flex;align-items:center;gap:8px}
.hero-mini li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--yellow)}
/* 右侧无图片，纯数据卡片 */
.hero-card{
  background:linear-gradient(150deg,rgba(255,255,255,.10),rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.16);border-radius:22px;padding:32px;backdrop-filter:blur(14px);
  box-shadow:0 24px 60px rgba(0,0,0,.35);
}
.hero-card h3{font-size:15px;font-weight:600;color:#e6e9ff;letter-spacing:1px;margin-bottom:22px;display:flex;align-items:center;gap:10px}
.hero-card h3::before{content:"";width:4px;height:16px;border-radius:2px;background:linear-gradient(#ff3d2e,#ffc400)}
.model-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.model-tags span{font-size:12.5px;padding:6px 13px;border-radius:8px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.13);color:#cfd4ee;transition:.25s}
.model-tags span:hover{background:rgba(255,61,46,.25);border-color:rgba(255,61,46,.5);color:#fff;transform:translateY(-2px)}
.hero-stats{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.hstat{background:rgba(0,0,0,.22);border-radius:12px;padding:14px 16px;border:1px solid rgba(255,255,255,.07)}
.hstat b{display:block;font-size:24px;font-weight:800;background:linear-gradient(90deg,#fff,#ffb8a8);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.2}
.hstat small{font-size:12px;color:#9aa1c2}

/* ============ 通用区块 ============ */
.section{padding:88px 0}
.section.soft{background:var(--bg-soft)}
.sec-head{text-align:center;max-width:760px;margin:0 auto 56px}
.sec-tag{display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.5px;color:var(--primary);background:rgba(255,61,46,.09);padding:6px 16px;border-radius:50px;margin-bottom:16px}
.sec-head h2{font-size:38px;font-weight:800;letter-spacing:-.5px;line-height:1.25;margin-bottom:16px}
.sec-head p{color:var(--gray);font-size:16px}
.reveal{opacity:0;transform:translateY(34px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* 数据指标 */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:-56px;position:relative;z-index:5}
.metric{
  background:#fff;border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow);border:1px solid var(--line);
  transition:.3s;position:relative;overflow:hidden;
}
.metric::after{content:"";position:absolute;left:0;top:0;height:4px;width:100%;background:linear-gradient(90deg,var(--primary),var(--yellow))}
.metric:hover{transform:translateY(-6px);box-shadow:0 20px 44px rgba(16,20,60,.16)}
.metric b{font-size:36px;font-weight:800;display:block;color:var(--accent);line-height:1.1}
.metric b em{font-style:normal;font-size:18px;color:var(--primary)}
.metric span{color:var(--gray);font-size:14px}

/* 关于我们 */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.about-text h2{font-size:34px;font-weight:800;margin-bottom:20px;line-height:1.25}
.about-text p{color:var(--gray);margin-bottom:16px;font-size:15.5px}
.about-feats{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:26px}
.about-feats div{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:#2a2e46;font-weight:600}
.about-feats i{
  flex:0 0 22px;height:22px;border-radius:50%;background:rgba(43,89,255,.12);color:var(--blue);
  display:flex;align-items:center;justify-content:center;font-style:normal;font-size:12px;font-weight:800;margin-top:2px
}
.about-visual{border-radius:22px;overflow:hidden;box-shadow:var(--shadow)}
.about-visual img{margin-bottom:14px;border-radius:14px}

/* 服务能力 */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.svc-card{
  background:#fff;border-radius:var(--radius);padding:30px 26px;border:1px solid var(--line);
  transition:.3s;position:relative;overflow:hidden;
}
.svc-card::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,61,46,.06),transparent 60%);opacity:0;transition:.3s}
.svc-card:hover{transform:translateY(-6px);box-shadow:0 20px 44px rgba(16,20,60,.13);border-color:transparent}
.svc-card:hover::before{opacity:1}
.svc-icon{
  width:52px;height:52px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  font-size:22px;margin-bottom:18px;color:#fff;position:relative;z-index:1;
}
.svc-card h3{font-size:18px;font-weight:700;margin-bottom:10px;position:relative;z-index:1}
.svc-card p{font-size:14px;color:var(--gray);position:relative;z-index:1}
.ic-1{background:linear-gradient(135deg,#ff5133,#ff2d1a)}
.ic-2{background:linear-gradient(135deg,#2b59ff,#5f7bff)}
.ic-3{background:linear-gradient(135deg,#00b6a0,#00e0c6)}
.ic-4{background:linear-gradient(135deg,#ffb400,#ffc400)}
.ic-5{background:linear-gradient(135deg,#8b5cf6,#b57bff)}
.ic-6{background:linear-gradient(135deg,#0a0e27,#2b3570)}

/* 场景标签云 */
.tagcloud{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.tagcloud a{
  display:inline-block;padding:10px 20px;border-radius:50px;background:#fff;border:1px solid var(--line);
  font-size:14px;color:#2a2e46;transition:.25s;font-weight:500;
}
.tagcloud a:hover{background:var(--accent);color:#fff;border-color:var(--accent);transform:translateY(-3px)}
.tagcloud a:nth-child(3n+1):hover{background:var(--primary);border-color:var(--primary)}
.tagcloud a:nth-child(3n+2):hover{background:var(--blue);border-color:var(--blue)}

/* 流程步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative}
.step{background:#fff;border-radius:var(--radius);padding:30px 24px;border:1px solid var(--line);transition:.3s;text-align:left}
.step:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.step .num{
  width:46px;height:46px;border-radius:50%;background:var(--accent);color:#fff;font-weight:800;font-size:18px;
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.step:nth-child(2) .num{background:var(--primary)}
.step:nth-child(3) .num{background:var(--blue)}
.step:nth-child(4) .num{background:linear-gradient(135deg,#00b6a0,#00e0c6)}
.step h3{font-size:17px;font-weight:700;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--gray)}

/* 对比表格 */
.table-wrap{overflow-x:auto;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line)}
table.cmp{width:100%;border-collapse:collapse;background:#fff;min-width:620px}
table.cmp th,table.cmp td{padding:16px 20px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line)}
table.cmp thead th{background:var(--accent);color:#fff;font-weight:700;font-size:15px}
table.cmp thead th:first-child{border-top-left-radius:var(--radius)}
table.cmp thead th:last-child{border-top-right-radius:var(--radius)}
table.cmp tbody tr:hover{background:#fbfcff}
table.cmp .good{color:var(--primary);font-weight:700}
.rating-box{display:flex;flex-wrap:wrap;gap:22px;align-items:center;justify-content:center;margin-bottom:36px}
.score-card{
  background:linear-gradient(150deg,#0a0e27,#1a2150);color:#fff;border-radius:20px;padding:30px 40px;text-align:center;
  box-shadow:0 20px 50px rgba(10,14,39,.35);min-width:220px;
}
.score-card .stars{color:var(--yellow);font-size:22px;letter-spacing:4px;margin-bottom:8px}
.score-card b{font-size:46px;font-weight:800;background:linear-gradient(90deg,#ffc400,#ff5133);-webkit-background-clip:text;background-clip:text;color:transparent}
.score-card small{display:block;color:#a8afcc;font-size:13px;margin-top:6px}

/* 案例 */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.case-card{background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);transition:.3s;box-shadow:0 6px 20px rgba(16,20,60,.05)}
.case-card:hover{transform:translateY(-6px);box-shadow:0 22px 46px rgba(16,20,60,.15)}
.case-card img{width:100%;height:230px;object-fit:cover;transition:.5s}
.case-card:hover img{transform:scale(1.04)}
.case-body{padding:26px}
.case-body .cat{font-size:12.5px;font-weight:700;color:var(--primary);letter-spacing:1px;margin-bottom:8px}
.case-body h3{font-size:19px;font-weight:700;margin-bottom:10px}
.case-body p{font-size:14px;color:var(--gray)}
.case-square{display:grid;grid-template-columns:280px 1fr;gap:34px;align-items:center;margin-top:26px;background:#fff;border-radius:var(--radius);padding:30px;border:1px solid var(--line)}
.case-square img{border-radius:14px;width:100%}

/* 评论 */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review{background:#fff;border-radius:var(--radius);padding:28px;border:1px solid var(--line);transition:.3s;position:relative}
.review:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.review .quote{font-size:34px;color:rgba(255,61,46,.2);font-weight:800;line-height:1;margin-bottom:6px}
.review p{font-size:14.5px;color:#333850;margin-bottom:20px}
.review .who{display:flex;align-items:center;gap:12px}
.review .avatar{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:15px;flex:0 0 auto}
.review .who b{display:block;font-size:14.5px}
.review .who small{color:var(--gray);font-size:12.5px}
.av-1{background:linear-gradient(135deg,#ff5133,#ff2d1a)}
.av-2{background:linear-gradient(135deg,#2b59ff,#5f7bff)}
.av-3{background:linear-gradient(135deg,#00b6a0,#00e0c6)}
.av-4{background:linear-gradient(135deg,#ffb400,#ff8a00)}
.av-5{background:linear-gradient(135deg,#8b5cf6,#b57bff)}
.av-6{background:linear-gradient(135deg,#0a0e27,#3a4a9c)}

/* Token比价 */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.price-card{background:#fff;border-radius:var(--radius);padding:32px 28px;border:1px solid var(--line);transition:.3s;position:relative}
.price-card.hot{border:2px solid var(--primary);box-shadow:0 20px 44px rgba(255,61,46,.14)}
.price-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.hot-flag{position:absolute;top:-13px;right:24px;background:var(--primary);color:#fff;font-size:12px;font-weight:700;padding:4px 14px;border-radius:50px}
.price-card h3{font-size:18px;font-weight:700;margin-bottom:6px}
.price-card .desc{font-size:13px;color:var(--gray);margin-bottom:20px}
.price-card .amount{font-size:38px;font-weight:800;color:var(--accent);line-height:1}
.price-card .amount em{font-style:normal;font-size:14px;color:var(--gray);font-weight:500;margin-left:4px}
.price-card ul{margin:22px 0}
.price-card li{font-size:14px;color:#333850;padding:7px 0 7px 24px;position:relative}
.price-card li::before{content:"✓";position:absolute;left:0;color:var(--primary);font-weight:800}
.price-card .btn{width:100%}

/* 时间线 */
.timeline{position:relative;padding-left:8px;max-width:900px;margin:0 auto}
.timeline::before{content:"";position:absolute;left:15px;top:8px;bottom:8px;width:3px;background:linear-gradient(var(--primary),var(--blue),var(--cyan));border-radius:3px}
.tl-item{position:relative;padding:0 0 34px 48px}
.tl-item::before{content:"";position:absolute;left:7px;top:6px;width:19px;height:19px;border-radius:50%;background:#fff;border:4px solid var(--primary);box-shadow:0 0 0 4px rgba(255,61,46,.12)}
.tl-item h3{font-size:17px;font-weight:700;margin-bottom:6px}
.tl-item p{font-size:14px;color:var(--gray)}

/* 服务网络 */
.net-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.net-card{background:#fff;border-radius:14px;padding:24px;border:1px solid var(--line);text-align:center;transition:.3s}
.net-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:rgba(43,89,255,.3)}
.net-card b{display:block;font-size:17px;font-weight:700;margin-bottom:6px}
.net-card span{font-size:13px;color:var(--gray)}

/* 文章 */
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.article-card{background:#fff;border-radius:var(--radius);padding:26px;border:1px solid var(--line);transition:.3s;display:block}
.article-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:transparent}
.article-card .a-tag{font-size:12px;font-weight:700;color:var(--blue);background:rgba(43,89,255,.09);padding:4px 12px;border-radius:50px;display:inline-block;margin-bottom:14px}
.article-card h3{font-size:16.5px;font-weight:700;margin-bottom:10px;line-height:1.45}
.article-card p{font-size:13.5px;color:var(--gray);margin-bottom:16px}
.article-card .more{font-size:13.5px;font-weight:700;color:var(--primary)}

/* 表单 */
.form-wrap{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start}
.form-info h2{font-size:34px;font-weight:800;margin-bottom:18px;line-height:1.25}
.form-info p{color:var(--gray);font-size:15px;margin-bottom:26px}
.contact-list li{display:flex;gap:14px;align-items:flex-start;padding:12px 0;font-size:14.5px;color:#2a2e46;border-bottom:1px dashed var(--line)}
.contact-list li b{flex:0 0 76px;color:var(--gray);font-weight:600}
.contact-list a{color:var(--blue);font-weight:600}
.qr-box{margin-top:22px;display:flex;align-items:center;gap:16px;background:var(--bg-soft);padding:16px;border-radius:14px}
.qr-box img{width:110px;height:110px;object-fit:cover;border-radius:10px}
.qr-box div small{color:var(--gray);font-size:13px;display:block}
.qr-box div b{font-size:15px}
form.req-form{background:#fff;border-radius:20px;padding:36px;border:1px solid var(--line);box-shadow:var(--shadow)}
.form-row{margin-bottom:18px}
.form-row label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
.form-row label span{color:var(--primary)}
.form-row input,.form-row select,.form-row 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:#fbfcff;transition:.25s;
}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{outline:none;border-color:var(--primary);background:#fff;box-shadow:0 0 0 4px rgba(255,61,46,.1)}
.form-row textarea{resize:vertical;min-height:110px}
.form-half{display:grid;grid-template-columns:1fr 1fr;gap:18px}

/* FAQ */
.faq-list{max-width:880px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:14px;overflow:hidden;transition:.3s}
.faq-item.open{border-color:rgba(255,61,46,.35);box-shadow:0 12px 30px rgba(255,61,46,.1)}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;padding:22px 26px;
  font-size:16px;font-weight:700;font-family:inherit;color:var(--ink);display:flex;justify-content:space-between;gap:16px;align-items:center;
}
.faq-q .ico{flex:0 0 26px;height:26px;border-radius:50%;background:var(--bg-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px;transition:.3s;font-weight:400}
.faq-item.open .faq-q .ico{background:var(--primary);color:#fff;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-a p{padding:0 26px 24px;color:var(--gray);font-size:14.5px;line-height:1.75}

/* 加盟 */
.join-banner{
  background:linear-gradient(135deg,#0a0e27 0%,#1a2150 50%,#2b1a3f 100%);border-radius:24px;padding:60px 50px;color:#fff;
  display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;position:relative;overflow:hidden;
}
.join-banner::before{content:"";position:absolute;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(255,61,46,.4),transparent 70%);top:-100px;right:-60px}
.join-banner h2{font-size:34px;font-weight:800;margin-bottom:16px;position:relative}
.join-banner p{color:#b9c0dd;font-size:15px;margin-bottom:26px;position:relative}
.join-pts{display:flex;flex-wrap:wrap;gap:12px;position:relative}
.join-pts span{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);padding:8px 16px;border-radius:50px;font-size:13.5px}
.join-banner .btn{position:relative}

/* 友情链接 */
.links-bar{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.links-bar a{font-size:14px;color:var(--gray);padding:8px 18px;border-radius:50px;background:#fff;border:1px solid var(--line);transition:.25s}
.links-bar a:hover{color:var(--primary);border-color:rgba(255,61,46,.4);transform:translateY(-2px)}

/* 页脚 */
footer{background:#060918;color:#9aa1c2;padding:64px 0 30px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:44px}
.foot-brand img{height:40px;margin-bottom:18px}
.foot-brand p{font-size:13.5px;line-height:1.8;margin-bottom:16px}
.foot-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.foot-col a,.foot-col li{font-size:13.5px;color:#9aa1c2;padding:5px 0;display:block;transition:.2s}
.foot-col a:hover{color:#fff;padding-left:3px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:24px;display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;font-size:13px}
.foot-bottom a{color:#9aa1c2}
.foot-bottom a:hover{color:#fff}

/* 浮动客服 */
.float-cs{position:fixed;right:24px;bottom:24px;z-index:1200;display:flex;flex-direction:column;gap:12px;align-items:flex-end}
.fc-btn{
  width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:0 10px 26px rgba(0,0,0,.2);transition:.3s;border:none;color:#fff;font-size:12px;font-weight:700;
  flex-direction:column;
}
.fc-btn:hover{transform:scale(1.08)}
.fc-cs{background:linear-gradient(135deg,#ff5133,#ff2d1a)}
.fc-top{background:var(--accent);opacity:0;pointer-events:none}
.fc-top.show{opacity:1;pointer-events:auto}
.fc-pop{
  position:fixed;right:92px;bottom:24px;background:#fff;border-radius:16px;padding:18px;box-shadow:0 20px 50px rgba(0,0,0,.18);
  display:none;text-align:center;width:200px;z-index:1201;
}
.fc-pop.show{display:block;animation:fadeUp .3s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.fc-pop img{width:100%;border-radius:10px;margin-bottom:8px}
.fc-pop small{color:var(--gray);font-size:12.5px}
.fc-icon{font-size:20px;line-height:1}

/* 响应式 */
@media (max-width:1080px){
  .hero h1{font-size:42px}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .svc-grid,.review-grid,.price-grid,.article-grid{grid-template-columns:repeat(2,1fr)}
  .metrics,.net-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .about-grid,.form-wrap,.case-square{grid-template-columns:1fr;gap:36px}
  .join-banner{grid-template-columns:1fr;padding:44px 32px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none;position:absolute;top:70px;left:0;right:0;background:#0b1030;flex-direction:column;padding:14px 20px;gap:2px;border-bottom:1px solid rgba(255,255,255,.1)}
  .nav-links.open{display:flex}
  .nav-links a{width:100%;padding:12px;font-size:15px}
  .menu-toggle{display:flex}
  .nav-cta .btn-primary{display:none}
}
@media (max-width:720px){
  .section{padding:60px 0}
  .hero{padding:120px 0 90px}
  .hero h1{font-size:32px}
  .hero-sub{font-size:15px}
  .sec-head h2{font-size:27px}
  .about-text h2,.form-info h2,.join-banner h2{font-size:26px}
  .svc-grid,.review-grid,.price-grid,.article-grid,.case-grid,.metrics,.net-grid,.steps,.form-half,.about-feats{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:1fr 1fr}
  .metric b{font-size:30px}
  .foot-grid{grid-template-columns:1fr}
  .hero-cta .btn{width:100%}
  .float-cs{right:14px;bottom:14px}
  form.req-form{padding:24px}
  .join-banner{padding:34px 24px}
  .score-card{padding:24px 30px;min-width:auto;width:100%}
  .rating-box{flex-direction:column}
}