/* ===== 包接客AI获客系统 v2 深色科技风 ===== */
:root{
  --bg:#0a0e1a;
  --bg-soft:#0f1525;
  --bg-card:#111a2e;
  --bg-card-hover:#162038;
  --border:rgba(255,255,255,0.08);
  --border-hover:rgba(0,212,255,0.3);
  --text:#e8edf5;
  --text-soft:#94a3b8;
  --text-muted:#64748b;
  --primary:#00d4ff;
  --primary-2:#0ea5e9;
  --accent:#8b5cf6;
  --accent-2:#6366f1;
  --success:#10b981;
  --warning:#f59e0b;
  --gradient:linear-gradient(135deg,#00d4ff 0%,#0ea5e9 50%,#8b5cf6 100%);
  --gradient-text:linear-gradient(135deg,#00d4ff,#8b5cf6);
  --radius:14px;
  --radius-lg:20px;
  --shadow:0 8px 32px rgba(0,0,0,0.4);
  --shadow-glow:0 0 40px rgba(0,212,255,0.15);
  --maxw:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none;transition:all .3s}
ul{list-style:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ===== 背景装饰 ===== */
body::before{content:"";position:fixed;top:-200px;right:-200px;width:600px;height:600px;background:radial-gradient(circle,rgba(0,212,255,0.08) 0%,transparent 70%);pointer-events:none;z-index:0}
body::after{content:"";position:fixed;bottom:-200px;left:-200px;width:500px;height:500px;background:radial-gradient(circle,rgba(139,92,246,0.08) 0%,transparent 70%);pointer-events:none;z-index:0}

/* ===== 导航 ===== */
.header{position:fixed;top:0;left:0;right:0;z-index:1000;transition:all .3s;background:rgba(10,14,26,0.7);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border)}
.header.scrolled{background:rgba(10,14,26,0.92);box-shadow:0 4px 30px rgba(0,0,0,0.5)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;letter-spacing:-.5px}
.logo-icon{width:38px;height:38px;border-radius:10px;background:var(--gradient);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:900;color:#fff;box-shadow:0 4px 15px rgba(0,212,255,0.3)}
.logo-img{height:38px;width:auto;display:block}
.logo span{background:var(--gradient-text);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-item{position:relative}
.nav-link{display:block;padding:8px 16px;border-radius:8px;font-size:15px;color:var(--text-soft);font-weight:500}
.nav-link:hover,.nav-link.active{color:var(--primary);background:rgba(0,212,255,0.08)}
.dropdown{position:absolute;top:100%;left:0;min-width:220px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:8px;opacity:0;visibility:hidden;transform:translateY(10px);transition:all .3s;box-shadow:var(--shadow)}
.nav-item.has-dropdown:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown a{display:block;padding:10px 14px;border-radius:8px;font-size:14px;color:var(--text-soft)}
.dropdown a:hover{background:rgba(0,212,255,0.1);color:var(--primary)}
.nav-cta{display:flex;align-items:center;gap:16px}
.nav-tel{font-size:15px;font-weight:700;color:var(--primary)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;border:none;transition:all .3s}
.btn-primary{background:var(--gradient);color:#fff;box-shadow:0 4px 20px rgba(0,212,255,0.25)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(0,212,255,0.4)}
.btn-ghost{background:rgba(255,255,255,0.06);color:var(--text);border:1px solid var(--border)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.menu-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.menu-toggle span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:all .3s}

/* ===== Hero首屏 ===== */
.hero{position:relative;padding:160px 0 100px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:50px;background:rgba(0,212,255,0.1);border:1px solid rgba(0,212,255,0.2);font-size:13px;color:var(--primary);font-weight:500;margin-bottom:24px}
.hero h1{font-size:52px;line-height:1.15;font-weight:900;letter-spacing:-1.5px;margin-bottom:24px}
.hero h1 .grad{background:var(--gradient-text);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{font-size:18px;color:var(--text-soft);margin-bottom:36px;max-width:540px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:40px;margin-top:48px;padding-top:32px;border-top:1px solid var(--border)}
.hero-stat .num{font-size:32px;font-weight:900;background:var(--gradient-text);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-stat .label{font-size:13px;color:var(--text-muted);margin-top:4px}
.hero-visual{position:relative}
.hero-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow-glow);position:relative;overflow:hidden}
.hero-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient)}
.hero-card-title{font-size:14px;color:var(--text-muted);margin-bottom:16px;text-transform:uppercase;letter-spacing:1px}
.hero-card-item{display:flex;align-items:center;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--border)}
.hero-card-item:last-child{border-bottom:none}
.hero-card-item .name{font-size:14px;color:var(--text-soft)}
.hero-card-item .val{font-size:14px;font-weight:700;color:var(--success)}
.hero-card-item .val.down{color:#ef4444}
.hero-float{position:absolute;background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:16px 20px;box-shadow:var(--shadow)}
.hero-float.f1{top:-20px;right:-20px;animation:float 4s ease-in-out infinite}
.hero-float.f2{bottom:-20px;left:-20px;animation:float 4s ease-in-out infinite .5s}
.hero-float .ft{font-size:12px;color:var(--text-muted)}
.hero-float .fv{font-size:20px;font-weight:900;color:var(--primary)}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}

/* ===== 通用区块 ===== */
.section{padding:90px 0;position:relative;z-index:1}
.section-head{text-align:center;max-width:680px;margin:0 auto 56px}
.section-tag{display:inline-block;padding:5px 14px;border-radius:50px;background:rgba(139,92,246,0.1);border:1px solid rgba(139,92,246,0.2);font-size:12px;color:var(--accent);font-weight:600;text-transform:uppercase;letter-spacing:1px;margin-bottom:16px}
.section-title{font-size:38px;font-weight:900;letter-spacing:-1px;margin-bottom:16px}
.section-title .grad{background:var(--gradient-text);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.section-desc{font-size:16px;color:var(--text-soft)}

/* ===== 优势卡片 ===== */
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.adv-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;transition:all .3s;position:relative;overflow:hidden}
.adv-card::before{content:"";position:absolute;top:0;left:0;width:0;height:3px;background:var(--gradient);transition:width .3s}
.adv-card:hover{border-color:var(--border-hover);transform:translateY(-4px);box-shadow:var(--shadow-glow)}
.adv-card:hover::before{width:100%}
.adv-icon{width:52px;height:52px;border-radius:12px;background:linear-gradient(135deg,rgba(0,212,255,0.15),rgba(139,92,246,0.15));display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px}
.adv-card h3{font-size:17px;font-weight:700;margin-bottom:10px}
.adv-card p{font-size:14px;color:var(--text-soft);line-height:1.6}

/* ===== 服务卡片 ===== */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all .3s;display:flex;flex-direction:column}
.service-card:hover{border-color:var(--border-hover);transform:translateY(-6px);box-shadow:var(--shadow-glow)}
.service-card-head{padding:28px 24px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.service-card-head h3{font-size:19px;font-weight:700;display:flex;align-items:center;gap:10px}
.tag{padding:4px 12px;border-radius:50px;font-size:12px;font-weight:600;background:rgba(0,212,255,0.1);color:var(--primary)}
.tag.hot{background:rgba(239,68,68,0.1);color:#ef4444}
.tag.new{background:rgba(16,185,129,0.1);color:var(--success)}
.service-card-body{padding:20px 24px;flex:1}
.service-card-body ul li{padding:7px 0;font-size:14px;color:var(--text-soft);display:flex;align-items:flex-start;gap:8px}
.service-card-body ul li::before{content:"✓";color:var(--primary);font-weight:700;flex-shrink:0}
.service-card-foot{padding:16px 24px 24px}
.service-card-foot a{color:var(--primary);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.service-card-foot a:hover{gap:10px}

/* ===== 流程步骤 ===== */
.process-steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;position:relative}
.process-step{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px 20px;text-align:center;position:relative;transition:all .3s}
.process-step:hover{border-color:var(--border-hover);transform:translateY(-3px)}
.process-num{width:40px;height:40px;border-radius:50%;background:var(--gradient);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:800;color:#fff;margin:0 auto 14px}
.process-step h4{font-size:15px;font-weight:700;margin-bottom:8px}
.process-step p{font-size:13px;color:var(--text-muted)}

/* ===== 案例卡片 ===== */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all .3s}
.case-card:hover{border-color:var(--border-hover);transform:translateY(-4px)}
.case-img{height:160px;background:linear-gradient(135deg,rgba(0,212,255,0.1),rgba(139,92,246,0.1));display:flex;align-items:center;justify-content:center;font-size:56px}
.case-body{padding:24px}
.case-body h3{font-size:17px;font-weight:700;margin-bottom:10px}
.case-meta{display:flex;gap:12px;margin-bottom:12px;flex-wrap:wrap}
.case-meta span{font-size:12px;color:var(--text-muted);padding:3px 10px;background:rgba(255,255,255,0.04);border-radius:50px}
.case-body p{font-size:14px;color:var(--text-soft);margin-bottom:14px;line-height:1.6}
.case-result{display:inline-block;padding:6px 14px;border-radius:8px;background:rgba(16,185,129,0.1);color:var(--success);font-size:13px;font-weight:700}

/* ===== FAQ ===== */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:14px;overflow:hidden;transition:all .3s}
.faq-item.active{border-color:var(--border-hover)}
.faq-question{padding:20px 24px;font-size:16px;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px}
.faq-question::after{content:"+";font-size:22px;color:var(--primary);flex-shrink:0;transition:transform .3s}
.faq-item.active .faq-question::after{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 24px}
.faq-item.active .faq-answer{max-height:500px;padding:0 24px 20px}
.faq-answer p{font-size:15px;color:var(--text-soft);line-height:1.8}

/* ===== 资质 ===== */
.credentials-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.cred-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;text-align:center;transition:all .3s}
.cred-card:hover{border-color:var(--border-hover);transform:translateY(-3px)}
.cred-icon{font-size:32px;margin-bottom:12px}
.cred-card h4{font-size:15px;font-weight:700;margin-bottom:6px}
.cred-card p{font-size:13px;color:var(--text-muted)}

/* ===== CTA ===== */
.cta-band{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:56px 40px;text-align:center;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient)}
.cta-band h2{font-size:30px;font-weight:900;margin-bottom:12px}
.cta-band p{font-size:16px;color:var(--text-soft);margin-bottom:28px}

/* ===== 页脚 ===== */
.footer{background:var(--bg-soft);border-top:1px solid var(--border);padding:60px 0 24px;margin-top:60px;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:40px}
.footer-brand p{font-size:14px;color:var(--text-muted);margin-top:16px;line-height:1.7}
.footer h4{font-size:15px;font-weight:700;margin-bottom:18px;color:var(--text)}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--text-muted)}
.footer-links a:hover{color:var(--primary)}
.footer-contact p{font-size:14px;color:var(--text-muted);margin-bottom:10px}
.footer-bottom{padding-top:24px;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--text-muted)}
.footer-bottom a{color:var(--text-muted)}
.footer-bottom a:hover{color:var(--primary)}

/* ===== 浮动咨询 ===== */
.float-consult{position:fixed;right:20px;bottom:30px;display:flex;flex-direction:column;gap:12px;z-index:999}
.float-btn{width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px;cursor:pointer;border:none;transition:all .3s;background:var(--bg-card);border:1px solid var(--border);color:var(--text);box-shadow:var(--shadow)}
.float-btn:hover{transform:scale(1.1);border-color:var(--primary)}
.float-btn.tel{background:var(--gradient);color:#fff;border:none}
.float-btn.top{display:none}
.float-btn.top.show{display:flex}

/* ===== 内页 ===== */
.page-hero{padding:140px 0 60px;position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;bottom:0;left:0;right:0;height:1px;background:var(--border)}
.page-hero h1{font-size:42px;font-weight:900;letter-spacing:-1px;margin-bottom:14px}
.page-hero h1 .grad{background:var(--gradient-text);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.page-hero p{font-size:17px;color:var(--text-soft);max-width:600px}
.breadcrumb{padding:16px 0;font-size:13px;color:var(--text-muted);border-bottom:1px solid var(--border)}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--primary)}
.page-content{padding:60px 0;position:relative;z-index:1}
.content-block{margin-bottom:56px}
.content-block h2{font-size:26px;font-weight:800;margin-bottom:20px;letter-spacing:-.5px;display:flex;align-items:center;gap:12px}
.content-block h2::before{content:"";width:4px;height:24px;border-radius:2px;background:var(--gradient);flex-shrink:0}
.content-block h3{font-size:19px;font-weight:700;margin:24px 0 12px;color:var(--text)}
.content-block p{font-size:15px;color:var(--text-soft);margin-bottom:14px;line-height:1.85}
.content-block ul{margin-bottom:16px}
.content-block ul li{padding:8px 0 8px 24px;font-size:15px;color:var(--text-soft);position:relative;line-height:1.7}
.content-block ul li::before{content:"▸";position:absolute;left:0;color:var(--primary);font-weight:700}
.content-block ul li strong{color:var(--text)}

/* ===== 信息卡片网格 ===== */
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:20px 0}
.info-box{background:var(--bg-card);border:1px solid var(--border);border-left:3px solid var(--primary);border-radius:var(--radius);padding:24px;transition:all .3s}
.info-box:hover{border-color:var(--border-hover);border-left-color:var(--accent);transform:translateY(-2px)}
.info-box h4{font-size:16px;font-weight:700;margin-bottom:10px}
.info-box p{font-size:14px;color:var(--text-soft);line-height:1.7;margin:0}

/* ===== 表格 ===== */
.table-wrap{overflow-x:auto;margin:20px 0;border-radius:var(--radius);border:1px solid var(--border)}
table{width:100%;border-collapse:collapse;font-size:14px}
thead{background:rgba(0,212,255,0.06)}
th{padding:14px 16px;text-align:left;font-weight:700;color:var(--primary);font-size:13px;text-transform:uppercase;letter-spacing:.5px}
td{padding:14px 16px;border-top:1px solid var(--border);color:var(--text-soft)}
tbody tr:hover{background:rgba(255,255,255,0.02)}

/* ===== 联系信息（无表单） ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.contact-info-box{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px}
.contact-info-box h3{font-size:20px;font-weight:800;margin-bottom:24px}
.contact-info-item{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--border)}
.contact-info-item:last-child{border-bottom:none}
.contact-info-icon{width:44px;height:44px;border-radius:10px;background:linear-gradient(135deg,rgba(0,212,255,0.15),rgba(139,92,246,0.15));display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.contact-info-item h4{font-size:14px;font-weight:700;margin-bottom:4px}
.contact-info-item p{font-size:14px;color:var(--text-soft);margin:0}
.contact-noform{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center}
.contact-noform .icon{font-size:48px;margin-bottom:16px}
.contact-noform h3{font-size:20px;font-weight:800;margin-bottom:12px}
.contact-noform p{font-size:15px;color:var(--text-soft);margin-bottom:20px}
.contact-noform .ways{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.contact-noform .way{padding:10px 20px;border-radius:10px;background:rgba(0,212,255,0.08);border:1px solid rgba(0,212,255,0.2);font-size:14px;color:var(--primary);font-weight:600}

/* ===== 404 ===== */
.error-page{min-height:70vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:100px 20px}
.error-code{font-size:140px;font-weight:900;background:var(--gradient-text);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1;margin-bottom:20px}
.error-page h1{font-size:32px;font-weight:800;margin-bottom:12px}
.error-page p{font-size:16px;color:var(--text-soft);margin-bottom:32px}
.error-actions{display:flex;gap:16px;justify-content:center;margin-bottom:48px}
.error-suggest{max-width:500px;margin:0 auto}
.error-suggest h3{font-size:16px;font-weight:700;margin-bottom:16px;color:var(--text-soft)}
.error-suggest ul{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.error-suggest a{padding:8px 16px;border-radius:8px;background:var(--bg-card);border:1px solid var(--border);font-size:13px;color:var(--text-soft)}
.error-suggest a:hover{border-color:var(--primary);color:var(--primary)}

/* ===== 响应式 ===== */
@media(max-width:992px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:38px}
  .hero-visual{display:none}
  .adv-grid{grid-template-columns:repeat(2,1fr)}
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .credentials-grid{grid-template-columns:repeat(2,1fr)}
  .process-steps{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .contact-grid{grid-template-columns:1fr}
  .info-grid{grid-template-columns:repeat(2,1fr)}
  .nav-menu{display:none;position:fixed;top:72px;left:0;right:0;background:var(--bg-card);border-bottom:1px solid var(--border);flex-direction:column;padding:16px;gap:4px}
  .nav-menu.open{display:flex}
  .dropdown{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;background:transparent;padding:0 0 0 16px}
  .menu-toggle{display:flex}
  .nav-tel{display:none}
}
@media(max-width:768px){
  .hero{padding:120px 0 60px}
  .hero h1{font-size:30px}
  .hero-stats{gap:24px}
  .hero-stat .num{font-size:24px}
  .section{padding:60px 0}
  .section-title{font-size:28px}
  .adv-grid,.service-grid,.case-grid,.credentials-grid,.info-grid{grid-template-columns:1fr}
  .process-steps{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
  .page-hero h1{font-size:30px}
  .content-block h2{font-size:22px}
  .cta-band{padding:40px 24px}
  .cta-band h2{font-size:24px}
  .float-consult{right:12px;bottom:20px}
  .float-btn{width:46px;height:46px;font-size:18px}
}