*{margin:0;padding:0;box-sizing:border-box}
:root{
  --pri:#ff3d2e;
  --sec:#ffd60a;
  --blue:#1e2aff;
  --dark:#0d0f1a;
  --gray:#5a6172;
  --line:#e7e9f0;
  --bg:#ffffff;
  --soft:#f6f7fb;
  --radius:16px;
}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--dark);
  background:var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
ul{list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
section{scroll-margin-top:80px}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand img{height:38px;width:auto;max-width:150px;object-fit:contain}
.brand-name{font-weight:800;font-size:18px;letter-spacing:.5px;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:nowrap}
.nav-links a{
  display:inline-flex;align-items:center;
  padding:8px 13px;border-radius:8px;
  font-size:14px;font-weight:500;color:var(--dark);
  transition:color .2s,background .2s;white-space:nowrap;
}
.nav-links a:hover{color:var(--pri);background:#fff2f0}
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 20px;border-radius:999px;
  background:linear-gradient(120deg,var(--pri),#ff7a3d);
  color:#fff!important;font-weight:700;font-size:14px;
  box-shadow:0 8px 20px rgba(255,61,46,.32);
  transition:transform .2s,box-shadow .2s;white-space:nowrap;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,61,46,.45);background:linear-gradient(120deg,var(--pri),#ff7a3d)!important;color:#fff!important}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--dark);border-radius:2px;transition:.3s}

/* HERO 首屏——无图片 */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:
    radial-gradient(circle at 15% 20%,rgba(255,61,46,.55),transparent 45%),
    radial-gradient(circle at 85% 15%,rgba(30,42,255,.55),transparent 45%),
    radial-gradient(circle at 70% 90%,rgba(255,214,10,.28),transparent 40%),
    linear-gradient(140deg,#0d0f1a 0%,#161a30 55%,#0d0f1a 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 40%,#000 30%,transparent 80%);
  -webkit-mask-image:radial-gradient(circle at 50% 40%,#000 30%,transparent 80%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;padding:80px 0 90px;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);
  font-size:13px;font-weight:600;letter-spacing:.4px;margin-bottom:22px;
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--sec);box-shadow:0 0 0 4px rgba(255,214,10,.22);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{font-size:44px;line-height:1.22;font-weight:900;letter-spacing:-.5px;margin-bottom:20px}
.hero h1 .hl{background:linear-gradient(100deg,var(--sec),#ff8a5b);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:16.5px;color:rgba(255,255,255,.82);max-width:560px;margin-bottom:32px}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 30px;border-radius:999px;font-weight:700;font-size:15px;cursor:pointer;border:none;transition:transform .2s,box-shadow .2s,background .2s}
.btn-primary{background:linear-gradient(120deg,var(--pri),#ff7a3d);color:#fff;box-shadow:0 12px 30px rgba(255,61,46,.4)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 18px 38px rgba(255,61,46,.55)}
.btn-ghost{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.28)}
.btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-3px)}
.btn-outline{background:#fff;color:var(--pri);border:2px solid var(--pri)}
.btn-outline:hover{background:var(--pri);color:#fff;transform:translateY(-3px)}
.btn-dark{background:var(--dark);color:#fff}
.btn-dark:hover{background:#232842;transform:translateY(-3px)}
.hero-stats{display:flex;flex-wrap:wrap;gap:32px}
.hero-stat .num{font-size:26px;font-weight:900;color:#fff}
.hero-stat .num em{font-style:normal;color:var(--sec);font-size:16px;margin-left:2px}
.hero-stat .lbl{font-size:13px;color:rgba(255,255,255,.6)}
.hero-panel{
  position:relative;padding:26px;border-radius:22px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
  backdrop-filter:blur(14px);
}
.hero-panel h3{font-size:15px;font-weight:700;margin-bottom:16px;color:rgba(255,255,255,.92)}
.mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.mini-card{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);
  border-radius:14px;padding:14px;transition:transform .25s,background .25s;
}
.mini-card:hover{transform:translateY(-4px);background:rgba(255,255,255,.14)}
.mini-card .t{font-size:13.5px;font-weight:700;margin-bottom:4px}
.mini-card .d{font-size:12px;color:rgba(255,255,255,.62);line-height:1.5}
.mini-icon{width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:10px;background:linear-gradient(120deg,var(--pri),#ff7a3d);font-size:16px}
.mini-card:nth-child(2) .mini-icon{background:linear-gradient(120deg,var(--blue),#4d8bff)}
.mini-card:nth-child(3) .mini-icon{background:linear-gradient(120deg,#7a3cff,#b06bff)}
.mini-card:nth-child(4) .mini-icon{background:linear-gradient(120deg,#00b894,#4ecdc4)}

/* 通用区块 */
.section{padding:86px 0}
.section-soft{background:var(--soft)}
.section-head{text-align:center;max-width:760px;margin:0 auto 52px}
.eyebrow{display:inline-block;font-size:13px;font-weight:800;letter-spacing:1.5px;color:var(--pri);text-transform:uppercase;margin-bottom:12px}
.section-head h2{font-size:34px;font-weight:900;line-height:1.25;margin-bottom:16px;letter-spacing:-.4px}
.section-head p{font-size:16px;color:var(--gray)}
.sub-head{font-size:22px;font-weight:800;margin:0 0 20px}

/* 数据指标 */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 24px;text-align:center;transition:transform .25s,box-shadow .25s,border-color .25s;
}
.stat-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(16,20,40,.1);border-color:#ffd2cc}
.stat-card .num{font-size:36px;font-weight:900;background:linear-gradient(120deg,var(--pri),var(--blue));-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.1}
.stat-card .num em{font-style:normal;font-size:20px}
.stat-card .lbl{margin-top:8px;font-size:14px;color:var(--gray);font-weight:500}

/* 服务卡片 */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.svc-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 24px;transition:transform .25s,box-shadow .25s,border-color .25s;position:relative;overflow:hidden;
}
.svc-card::after{content:"";position:absolute;left:0;top:0;height:4px;width:0;background:linear-gradient(90deg,var(--pri),var(--sec));transition:width .3s}
.svc-card:hover{transform:translateY(-6px);box-shadow:0 20px 44px rgba(16,20,40,.1);border-color:#e0e4ff}
.svc-card:hover::after{width:100%}
.ic{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:#fff2f0;color:var(--pri);font-size:20px;margin-bottom:16px}
.svc-card:nth-child(3n+2) .ic{background:#eef0ff;color:var(--blue)}
.svc-card:nth-child(3n) .ic{background:#fff9e0;color:#c79a00}
.svc-card h3{font-size:17px;font-weight:800;margin-bottom:8px}
.svc-card p{font-size:14px;color:var(--gray);line-height:1.7}

/* 模型标签云 */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.tag{
  padding:8px 18px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:14px;font-weight:600;color:var(--gray);transition:all .22s;cursor:default;
}
.tag:hover{background:var(--pri);color:#fff;border-color:var(--pri);transform:translateY(-3px);box-shadow:0 10px 20px rgba(255,61,46,.25)}
.tag.hot{background:linear-gradient(120deg,var(--pri),#ff7a3d);color:#fff;border-color:transparent}
.tag.blue{background:linear-gradient(120deg,var(--blue),#4d8bff);color:#fff;border-color:transparent}

/* 流程步骤 */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.flow-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 22px;position:relative;transition:transform .25s,box-shadow .25s}
.flow-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(16,20,40,.1)}
.flow-num{font-size:40px;font-weight:900;color:#ffd2cc;line-height:1;margin-bottom:12px}
.flow-card h3{font-size:16px;font-weight:800;margin-bottom:8px}
.flow-card p{font-size:13.5px;color:var(--gray)}

/* 时间线 */
.timeline{position:relative;margin-top:10px;padding-left:24px}
.timeline::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:linear-gradient(var(--pri),var(--blue))}
.tl-item{position:relative;padding:0 0 28px 26px}
.tl-item::before{content:"";position:absolute;left:-23px;top:6px;width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid var(--pri)}
.tl-item .yr{font-size:13px;font-weight:800;color:var(--pri);letter-spacing:.5px}
.tl-item h4{font-size:16px;font-weight:800;margin:4px 0}
.tl-item p{font-size:14px;color:var(--gray)}

/* 对比表格 */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);background:#fff}
table{width:100%;border-collapse:collapse;min-width:760px}
thead{background:linear-gradient(120deg,#0d0f1a,#1c2340);color:#fff}
th,td{padding:16px 18px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line)}
th{font-weight:700;font-size:14px;letter-spacing:.3px;white-space:nowrap}
tbody tr{transition:background .2s}
tbody tr:hover{background:#fafbff}
td:first-child{font-weight:700}
.badge-mini{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:700}
.bm-good{background:#fff2f0;color:var(--pri)}
.bm-blue{background:#eef0ff;color:var(--blue)}
.bm-yellow{background:#fff9e0;color:#a37a00}

/* 评分卡 */
.rating-card{
  margin-top:24px;display:flex;flex-wrap:wrap;align-items:center;gap:30px;
  background:linear-gradient(120deg,#0d0f1a,#1c2340);color:#fff;border-radius:var(--radius);
  padding:32px;position:relative;overflow:hidden;
}
.rating-card::before{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(255,61,46,.5),transparent 70%)}
.rating-score{font-size:64px;font-weight:900;line-height:1;background:linear-gradient(100deg,var(--sec),#ff8a5b);-webkit-background-clip:text;background-clip:text;color:transparent}
.rating-score span{font-size:24px;color:rgba(255,255,255,.5)}
.rating-meta{flex:1;min-width:240px}
.rating-meta h3{font-size:20px;font-weight:800;margin-bottom:8px}
.rating-meta p{font-size:14px;color:rgba(255,255,255,.72);margin-bottom:10px}
.stars{font-size:20px;color:var(--sec);letter-spacing:3px}
.rating-score-note{font-size:13px;color:rgba(255,255,255,.6);margin-top:6px}

/* 评论 */
.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.rev-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column}
.rev-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(16,20,40,.1)}
.rev-stars{color:#f5a623;font-size:15px;letter-spacing:2px;margin-bottom:12px}
.rev-card p{font-size:14px;color:#2c3040;flex:1;line-height:1.75}
.rev-user{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
.avatar{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff;font-size:15px;flex-shrink:0}
.rev-user .name{font-weight:800;font-size:14px}
.rev-user .role{font-size:12.5px;color:var(--gray)}

/* 案例 */
.case-grid{display:grid;grid-template-columns:2fr 1fr;gap:22px}
.case-row{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:22px}
.case-item{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#fff;transition:transform .25s,box-shadow .25s;position:relative}
.case-item:hover{transform:translateY(-6px);box-shadow:0 20px 44px rgba(16,20,40,.12)}
.case-item img{width:100%;height:220px;object-fit:cover;transition:transform .4s}
.case-item:hover img{transform:scale(1.05)}
.case-item.tall img{height:462px}
.case-cap{padding:18px 22px}
.case-cap h3{font-size:16px;font-weight:800;margin-bottom:6px}
.case-cap p{font-size:13.5px;color:var(--gray)}

/* 文章 */
.article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.article-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:transform .25s,box-shadow .25s}
.article-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(16,20,40,.1)}
.article-card .date{font-size:12.5px;color:var(--gray);font-weight:600;margin-bottom:10px}
.article-card h3{font-size:16px;font-weight:800;margin-bottom:10px;line-height:1.45}
.article-card p{font-size:13.5px;color:var(--gray);margin-bottom:14px}
.article-card .more{font-size:13.5px;font-weight:700;color:var(--pri)}

/* 表单 */
.form-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:40px;box-shadow:0 20px 50px rgba(16,20,40,.06)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.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:8px}
.field input,.field select,.field textarea{
  width:100%;padding:13px 15px;border:1.5px solid var(--line);border-radius:10px;
  font-size:14.5px;font-family:inherit;transition:border-color .2s,box-shadow .2s;background:#fff;color:var(--dark);
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--pri);box-shadow:0 0 0 4px rgba(255,61,46,.1)}
.field textarea{resize:vertical;min-height:110px}
.form-note{font-size:12.5px;color:var(--gray);margin-top:12px}
.info-card{background:var(--soft);border-radius:22px;padding:32px}
.info-line{display:flex;align-items:flex-start;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line)}
.info-line:last-child{border-bottom:none}
.info-ic{width:40px;height:40px;border-radius:10px;background:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:17px;border:1px solid var(--line)}
.info-line .k{font-size:12.5px;color:var(--gray)}
.info-line .v{font-size:14.5px;font-weight:700;word-break:break-all}
.qrcode{margin-top:18px;text-align:center;padding:18px;background:#fff;border-radius:14px;border:1px solid var(--line)}
.qrcode img{width:150px;height:150px;object-fit:contain;margin:0 auto 10px;border-radius:8px}
.qrcode span{font-size:13px;color:var(--gray);font-weight:600}

/* 服务网络 */
.net-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.net-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;text-align:center;transition:transform .25s,box-shadow .25s}
.net-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(16,20,40,.1)}
.net-card .em{font-size:30px;margin-bottom:12px}
.net-card h3{font-size:16px;font-weight:800;margin-bottom:6px}
.net-card p{font-size:13.5px;color:var(--gray)}

/* 价格参考 */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.price-card{background:#fff;border:1.5px solid var(--line);border-radius:var(--radius);padding:32px 26px;transition:transform .25s,box-shadow .25s,border-color .25s;position:relative}
.price-card:hover{transform:translateY(-6px);box-shadow:0 20px 44px rgba(16,20,40,.1)}
.price-card.featured{border-color:var(--pri);box-shadow:0 20px 50px rgba(255,61,46,.16)}
.price-card .flag{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--pri);color:#fff;font-size:12px;font-weight:800;padding:5px 16px;border-radius:999px;white-space:nowrap}
.price-card h3{font-size:17px;font-weight:800;margin-bottom:6px}
.price-card .desc{font-size:13px;color:var(--gray);margin-bottom:18px}
.price-card .price{font-size:34px;font-weight:900;color:var(--pri);line-height:1}
.price-card .price small{font-size:14px;font-weight:600;color:var(--gray)}
.price-card ul{margin:18px 0 22px}
.price-card li{font-size:13.5px;color:#333;padding:7px 0 7px 24px;position:relative}
.price-card li::before{content:"✓";position:absolute;left:0;color:var(--pri);font-weight:900}

/* 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:box-shadow .2s,border-color .2s}
.faq-item.open{border-color:#ffd2cc;box-shadow:0 12px 30px rgba(255,61,46,.08)}
.faq-q{width:100%;text-align:left;padding:20px 24px;background:none;border:none;font-size:15.5px;font-weight:700;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;font-family:inherit;color:var(--dark)}
.faq-q .plus{font-size:22px;color:var(--pri);transition:transform .3s;flex-shrink:0;font-weight:400;line-height:1}
.faq-item.open .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0 24px}
.faq-a p{padding-bottom:20px;font-size:14.5px;color:var(--gray);line-height:1.8}

/* 页脚 */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;margin-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand img{height:36px;width:auto;max-width:150px;object-fit:contain}
.footer-brand span{font-weight:800;font-size:18px;color:#fff}
.footer-grid p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.6)}
.site-footer h4{color:#fff;font-size:15px;font-weight:800;margin-bottom:18px}
.site-footer ul li{margin-bottom:10px}
.site-footer ul li a{font-size:13.5px;color:rgba(255,255,255,.66);transition:color .2s}
.site-footer ul li a:hover{color:var(--sec)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:rgba(255,255,255,.5)}
.footer-cta{display:inline-flex;align-items:center;gap:6px;padding:9px 18px;border-radius:999px;background:linear-gradient(120deg,var(--pri),#ff7a3d);color:#fff;font-weight:700;font-size:13.5px;margin-top:14px;transition:transform .2s}
.footer-cta:hover{transform:translateY(-2px)}

/* 浮动客服 */
.float-wrap{position:fixed;right:22px;bottom:26px;z-index:1200;display:flex;flex-direction:column;gap:12px;align-items:flex-end}
.float-btn{
  width:56px;height:56px;border-radius:50%;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 26px rgba(16,20,40,.25);transition:transform .22s,box-shadow .22s;
  background:linear-gradient(120deg,var(--pri),#ff7a3d);color:#fff;font-size:22px;
}
.float-btn:hover{transform:translateY(-3px) scale(1.05)}
.float-btn.up{background:#fff;color:var(--dark);border:1px solid var(--line);font-size:18px;opacity:0;pointer-events:none;transition:opacity .3s,transform .22s}
.float-btn.up.show{opacity:1;pointer-events:auto}
.kefu-pop{
  position:absolute;right:70px;bottom:0;background:#fff;border-radius:16px;
  box-shadow:0 20px 50px rgba(16,20,40,.2);padding:16px;width:200px;text-align:center;
  opacity:0;visibility:hidden;transform:translateX(10px);transition:.28s;
}
.kefu-pop.show{opacity:1;visibility:visible;transform:translateX(0)}
.kefu-pop img{width:160px;height:160px;object-fit:contain;margin:0 auto 8px;border-radius:8px}
.kefu-pop span{font-size:12.5px;color:var(--gray);font-weight:600}

/* 动画渐入 */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* 响应式 */
@media(max-width:1100px){
  .nav-links{display:none;position:absolute;top:72px;left:0;right:0;flex-direction:column;align-items:stretch;background:#fff;padding:14px 20px;gap:2px;border-bottom:1px solid var(--line);box-shadow:0 14px 30px rgba(16,20,40,.1)}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 14px;font-size:15px}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  .hero-inner{grid-template-columns:1fr;gap:40px;padding:60px 0 70px}
  .hero h1{font-size:36px}
  .stats-grid,.flow-grid,.net-grid{grid-template-columns:repeat(2,1fr)}
  .card-grid,.rev-grid,.article-list,.price-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid{grid-template-columns:1fr}
  .case-item.tall img{height:260px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
}
@media(max-width:640px){
  .section{padding:56px 0}
  .hero h1{font-size:28px}
  .hero-sub{font-size:15px}
  .hero-stats{gap:20px}
  .hero-stat .num{font-size:22px}
  .section-head h2{font-size:25px}
  .stats-grid,.flow-grid,.net-grid,.card-grid,.rev-grid,.article-list,.price-grid,.form-row,.case-row{grid-template-columns:1fr}
  .mini-grid{grid-template-columns:1fr 1fr}
  .form-card{padding:26px 20px}
  .rating-card{padding:24px;flex-direction:column;text-align:center}
  .rating-score{font-size:52px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .hero-btns .btn{flex:1;min-width:0;padding:13px 18px}
  .float-wrap{right:14px;bottom:16px}
  .kefu-pop{right:66px}
  .brand-name{font-size:16px}
}