/* ============== 变量 ============== */
:root{
  --primary:#1A6EFF;--primary-light:#2E7BFF;--accent:#6E5BFF;--accent-2:#A45BFF;
  --orange:#FF7A45;--dark:#0F1B3D;--text:#1F2937;--text-2:#4B5563;--muted:#6B7280;
  --bg:#FFFFFF;--bg-2:#F5F7FB;--bg-3:#EEF2FF;--border:#E5E7EB;
  --shadow-sm:0 2px 8px rgba(26,110,255,.06);
  --shadow-md:0 8px 24px rgba(26,110,255,.10);
  --shadow-lg:0 16px 48px rgba(26,110,255,.16);
  --gradient:linear-gradient(135deg,#1A6EFF 0%,#2E7BFF 50%,#6E5BFF 100%);
  --gradient-soft:linear-gradient(135deg,#EEF2FF 0%,#F5F0FF 100%);
  --gradient-text:linear-gradient(135deg,#1A6EFF 0%,#6E5BFF 100%);
  --radius:16px;--radius-lg:24px;
}
/* ============== 基础 ============== */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI","Segoe UI Emoji","Apple Color Emoji","Noto Color Emoji",Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.6;font-size:16px;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.container{max-width:1240px;margin:0 auto;padding:0 24px}
/* ============== 导航栏 ============== */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.85);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid transparent;transition:all .3s ease}
.nav.scrolled{background:rgba(255,255,255,.95);border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;color:var(--dark);white-space:nowrap;flex-shrink:0}
.logo-icon{height:38px;width:auto;display:block;transition:transform .25s ease;flex-shrink:0;object-fit:contain}
.logo:hover .logo-icon{transform:scale(1.05)}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu a{padding:8px 14px;border-radius:8px;font-size:15px;color:var(--text-2);transition:all .2s ease;white-space:nowrap}
.nav-menu a:hover{color:var(--primary);background:var(--bg-3)}
.nav-menu a.active{color:var(--primary);background:var(--bg-3);font-weight:600}
.nav-cta{background:var(--gradient);color:white !important;padding:10px 22px !important;border-radius:10px;font-weight:600;box-shadow:0 4px 14px rgba(26,110,255,.3)}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(26,110,255,.4)}
.menu-toggle{display:none;width:40px;height:40px;border-radius:8px;background:var(--bg-2);position:relative}
.menu-toggle span{position:absolute;left:10px;right:10px;height:2px;background:var(--text);border-radius:2px;transition:all .3s ease}
.menu-toggle span:nth-child(1){top:14px}.menu-toggle span:nth-child(2){top:19px}.menu-toggle span:nth-child(3){top:24px}
.menu-toggle.active span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.menu-toggle.active span:nth-child(2){opacity:0}
.menu-toggle.active span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
@media (max-width:960px){
  .nav-menu{position:fixed;top:72px;left:0;right:0;background:white;flex-direction:column;align-items:stretch;gap:0;padding:20px;box-shadow:var(--shadow-md);transform:translateY(-110%);transition:transform .3s ease}
  .nav-menu.open{transform:translateY(0)}
  .nav-menu a{padding:14px 16px;font-size:16px;border-bottom:1px solid var(--bg-2)}
  .nav-menu a:last-child{border-bottom:none}
  .menu-toggle{display:flex;align-items:center;justify-content:center}
}
/* ============== Hero ============== */
.hero{position:relative;padding:160px 0 100px;overflow:hidden;background:linear-gradient(180deg,#FFFFFF 0%,#F5F7FB 100%)}
.hero::before{content:"";position:absolute;top:-20%;right:-10%;width:600px;height:600px;background:radial-gradient(circle,rgba(110,91,255,.15) 0%,transparent 70%);filter:blur(40px);z-index:0}
.hero::after{content:"";position:absolute;bottom:-30%;left:-10%;width:500px;height:500px;background:radial-gradient(circle,rgba(26,110,255,.15) 0%,transparent 70%);filter:blur(40px);z-index:0}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;background:white;border:1px solid var(--border);border-radius:99px;font-size:13px;color:var(--primary);font-weight:500;box-shadow:var(--shadow-sm)}
.hero-tag::before{content:"";width:8px;height:8px;background:#22c55e;border-radius:50%;box-shadow:0 0 0 4px rgba(34,197,94,.2)}
.hero-title{margin-top:24px;font-size:64px;line-height:1.1;font-weight:800;color:var(--dark);letter-spacing:-1px}
.hero-title .grad{background:var(--gradient-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin-top:24px;font-size:18px;color:var(--text-2);max-width:560px}
.hero-cta{margin-top:40px;display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:12px;font-weight:600;font-size:15px;transition:all .25s ease}
.btn-primary{background:var(--gradient);color:white;box-shadow:0 8px 24px rgba(26,110,255,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(26,110,255,.4)}
.btn-ghost{background:white;color:var(--text);border:1px solid var(--border)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.hero-visual{position:relative;height:480px;display:flex;align-items:center;justify-content:center}
.ball{position:absolute;border-radius:50%;background:linear-gradient(135deg,#2E7BFF 0%,#6E5BFF 50%,#A45BFF 100%);box-shadow:inset -20px -20px 50px rgba(0,0,0,.15),inset 20px 20px 50px rgba(255,255,255,.3),0 30px 80px rgba(110,91,255,.4);animation:float 6s ease-in-out infinite}
.ball-1{width:180px;height:180px;top:10%;left:15%;animation-delay:0s}
.ball-2{width:140px;height:140px;top:55%;left:5%;animation-delay:-2s;opacity:.85}
.ball-3{width:220px;height:220px;top:25%;right:5%;animation-delay:-3s}
.ball-4{width:80px;height:80px;top:70%;right:20%;animation-delay:-1s;opacity:.9}
.ball-5{width:60px;height:60px;top:5%;right:35%;animation-delay:-4s;background:linear-gradient(135deg,#FF7A45 0%,#A45BFF 100%)}
@keyframes float{0%,100%{transform:translateY(0) rotate(0deg)}50%{transform:translateY(-30px) rotate(15deg)}}
.hero-badge{position:absolute;background:white;padding:14px 20px;border-radius:14px;box-shadow:var(--shadow-md);display:flex;align-items:center;gap:12px;font-size:14px;font-weight:500;animation:floatY 4s ease-in-out infinite}
.hero-badge-1{top:5%;right:-10%;animation-delay:0s}
.hero-badge-2{bottom:15%;left:-5%;animation-delay:-2s}
.hero-badge-3{bottom:0;right:30%;animation-delay:-3s}
.hero-badge .ico{width:36px;height:36px;border-radius:10px;background:var(--gradient);display:flex;align-items:center;justify-content:center;color:white;font-size:18px}
.hero-badge.green .ico{background:linear-gradient(135deg,#22c55e,#16a34a)}
.hero-badge.orange .ico{background:linear-gradient(135deg,#FF7A45,#fb923c)}
.hero-badge .meta{font-size:11px;color:var(--muted);font-weight:400}
.hero-badge .val{font-weight:700}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
@media (max-width:960px){.hero{padding:120px 0 60px}.hero-inner{grid-template-columns:1fr;gap:40px}.hero-title{font-size:42px}.hero-visual{height:340px;order:-1}.ball-3{width:160px;height:160px}.hero-badge{display:none}}
/* ============== Section 通用 ============== */
.section{padding:100px 0;position:relative}
.section-head{text-align:center;max-width:780px;margin:0 auto 64px}
.section-tag{display:inline-block;padding:6px 16px;border-radius:99px;background:var(--bg-3);color:var(--primary);font-size:13px;font-weight:600}
.section-title{margin-top:16px;font-size:42px;font-weight:800;color:var(--dark);line-height:1.2;letter-spacing:-.5px}
.section-title .grad{background:var(--gradient-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.section-sub{margin-top:16px;font-size:17px;color:var(--text-2)}
.section-head.left{text-align:left;margin-left:0}
@media (max-width:760px){.section{padding:64px 0}.section-title{font-size:30px}}
/* ============== 数据条 ============== */
.stats{padding:80px 0;background:white}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.stat-card{text-align:center;padding:32px 20px;border-radius:var(--radius);background:linear-gradient(180deg,white 0%,var(--bg-2) 100%);border:1px solid var(--border);transition:all .3s ease}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:transparent}
.stat-num{font-size:56px;font-weight:800;line-height:1;background:var(--gradient-text);-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:-1px}
.stat-desc{margin-top:12px;font-size:14px;color:var(--muted);line-height:1.5}
@media (max-width:760px){.stats-grid{grid-template-columns:repeat(2,1fr);gap:16px}.stat-num{font-size:40px}}
/* ============== 板块导航卡（首页用） ============== */
.section-nav-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.section-nav{position:relative;padding:36px 28px;border-radius:var(--radius-lg);background:white;border:1px solid var(--border);overflow:hidden;transition:all .3s ease;display:block}
.section-nav::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient);transform:scaleX(0);transform-origin:left;transition:transform .4s ease}
.section-nav:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.section-nav:hover::before{transform:scaleX(1)}
.section-nav-emoji{width:56px;height:56px;border-radius:14px;background:var(--gradient);display:flex;align-items:center;justify-content:center;color:white;font-size:24px;box-shadow:0 8px 20px rgba(26,110,255,.25)}
.section-nav h3{margin-top:18px;font-size:20px;font-weight:700;color:var(--dark)}
.section-nav p{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.6}
.section-nav .arrow{margin-top:18px;font-size:14px;color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:gap .25s ease}
.section-nav:hover .arrow{gap:12px}
@media (max-width:960px){.section-nav-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.section-nav-grid{grid-template-columns:1fr}}
/* ============== 客户Logo墙 ============== */
.logos-wrap{padding:48px 32px;border-radius:var(--radius-lg);background:linear-gradient(180deg,var(--bg-2) 0%,white 100%);border:1px solid var(--border)}
.logos-row{display:flex;flex-wrap:wrap;justify-content:center;gap:36px 48px}
.logo-item{font-size:20px;font-weight:700;color:var(--text-2);letter-spacing:.5px;opacity:.75;transition:all .25s ease;font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif}
.logo-item:hover{opacity:1;color:var(--primary);transform:scale(1.05)}
.customer-stats{margin-top:48px;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cstat{text-align:center;padding:28px 20px;border-radius:var(--radius);background:var(--gradient);color:white}
.cstat .pct{font-size:48px;font-weight:800;line-height:1}
.cstat .lbl{margin-top:10px;font-size:14px;opacity:.9}
@media (max-width:760px){.customer-stats{grid-template-columns:1fr}.logos-row{gap:20px 32px}}
/* ============== CTA ============== */
.cta-section{padding:100px 0;background:linear-gradient(135deg,#0F1B3D 0%,#1A2B5C 50%,#2E1B5C 100%);position:relative;overflow:hidden;color:white}
.cta-section::before{content:"";position:absolute;top:-50%;right:-10%;width:600px;height:600px;background:radial-gradient(circle,rgba(110,91,255,.3) 0%,transparent 70%);filter:blur(60px);z-index:0}
.cta-inner{position:relative;z-index:1;text-align:center;max-width:780px;margin:0 auto}
.cta-title{font-size:48px;font-weight:800;line-height:1.2;letter-spacing:-.5px}
.cta-sub{margin-top:20px;font-size:18px;opacity:.85;line-height:1.6}
.cta-form{margin-top:40px;display:flex;gap:12px;max-width:560px;margin-left:auto;margin-right:auto;flex-wrap:wrap}
.cta-form input,.cta-form select,.cta-form textarea{flex:1;min-width:200px;padding:14px 20px;border-radius:12px;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.08);color:white;font-size:15px;outline:none;font-family:inherit}
.cta-form select option{color:#1F2937;background:white}
.cta-form textarea{min-height:120px;resize:vertical}
.cta-form input::placeholder,.cta-form textarea::placeholder{color:rgba(255,255,255,.5)}
.cta-form input:focus,.cta-form select:focus,.cta-form textarea:focus{border-color:rgba(255,255,255,.5);background:rgba(255,255,255,.12)}
.cta-form button{padding:14px 28px;border-radius:12px;background:white;color:var(--dark);font-weight:700;font-size:15px;transition:all .25s ease}
.cta-form button:hover{background:var(--orange);color:white;transform:translateY(-2px)}
.cta-trust{margin-top:24px;font-size:13px;opacity:.6}
@media (max-width:760px){.cta-title{font-size:32px}}
/* ============== 页脚 ============== */
.footer{padding:60px 0 24px;background:#0A1428;color:rgba(255,255,255,.7);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI","Segoe UI Emoji","Apple Color Emoji","Noto Color Emoji",Roboto,Helvetica,Arial,sans-serif}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-col h5{color:white;font-size:15px;font-weight:700;margin-bottom:18px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;transition:color .2s}
.footer-col a:hover{color:white}
.footer-about{font-size:14px;line-height:1.7;max-width:320px}
.footer-logo{display:flex;align-items:center;gap:10px;color:white;font-weight:700;font-size:18px;margin-bottom:16px}
.footer-logo .logo-icon{height:28px}
.footer-bottom{padding-top:24px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;font-size:13px}
@media (max-width:760px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px}}
/* ============== 滚动动画 ============== */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .8s ease,transform .8s ease}
.reveal.in{opacity:1;transform:translateY(0)}
.reveal-delay-1{transition-delay:.1s}.reveal-delay-2{transition-delay:.2s}.reveal-delay-3{transition-delay:.3s}
/* ============== 详情页通用 ============== */
.page-hero{padding:160px 0 80px;background:linear-gradient(180deg,#FFFFFF 0%,#F5F7FB 100%);position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;top:-30%;right:-10%;width:500px;height:500px;background:radial-gradient(circle,rgba(110,91,255,.12) 0%,transparent 70%);filter:blur(40px);z-index:0}
.page-hero-inner{position:relative;z-index:1;max-width:780px}
.page-hero .crumb{font-size:13px;color:var(--muted);margin-bottom:12px}
.page-hero .crumb a{color:var(--primary);text-decoration:none}
.page-hero h1{font-size:48px;line-height:1.15;font-weight:800;color:var(--dark);letter-spacing:-.5px}
.page-hero h1 .grad{background:var(--gradient-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.page-hero .lead{margin-top:20px;font-size:18px;color:var(--text-2);line-height:1.7}
@media (max-width:760px){.page-hero{padding:120px 0 50px}.page-hero h1{font-size:32px}}
/* 详情页内容容器 */
.content-block{margin-bottom:80px}
.content-block h2{font-size:32px;font-weight:800;color:var(--dark);margin-bottom:20px;line-height:1.3}
.content-block h3{font-size:22px;font-weight:700;color:var(--dark);margin:32px 0 14px}
.content-block p{font-size:16px;color:var(--text-2);line-height:1.8;margin-bottom:14px}
.content-block ul,.content-block ol{margin:14px 0;padding-left:24px;color:var(--text-2)}
.content-block li{margin-bottom:8px;line-height:1.7}
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:32px}
.feature-grid.cols-3{grid-template-columns:repeat(3,1fr)}
.feature-grid.cols-4{grid-template-columns:repeat(4,1fr)}
.feature{padding:24px;border-radius:var(--radius);background:white;border:1px solid var(--border);transition:all .25s ease}
.feature:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:transparent}
.feature-icon{width:44px;height:44px;border-radius:12px;background:var(--gradient-soft);display:inline-flex;align-items:center;justify-content:center;font-size:20px;color:var(--primary);margin-bottom:14px}
.feature h4{font-size:17px;font-weight:700;color:var(--dark)}
.feature p{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.6}
@media (max-width:760px){.feature-grid,.feature-grid.cols-3,.feature-grid.cols-4{grid-template-columns:1fr}}
/* 详情页对比/规格表 */
.spec-table{width:100%;border-collapse:collapse;margin-top:24px;background:white;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border)}
.spec-table th,.spec-table td{padding:14px 20px;text-align:left;border-bottom:1px solid var(--border);font-size:14px}
.spec-table th{background:var(--bg-2);font-weight:700;color:var(--dark)}
.spec-table tr:last-child td{border-bottom:none}
.spec-table tr:hover td{background:var(--bg-3)}
/* 流程步骤 */
.steps{display:flex;flex-direction:column;gap:18px;margin-top:32px}
.step{display:flex;gap:20px;padding:20px;border-radius:var(--radius);background:white;border:1px solid var(--border);transition:all .25s ease}
.step:hover{border-color:transparent;box-shadow:var(--shadow-sm)}
.step-num{flex-shrink:0;width:40px;height:40px;border-radius:50%;background:var(--gradient);color:white;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px}
.step-content h4{font-size:17px;font-weight:700;color:var(--dark)}
.step-content p{margin-top:6px;font-size:14px;color:var(--text-2);line-height:1.7}
/* 数据统计卡（详情页用） */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:32px 0}
.metric{padding:24px 16px;border-radius:var(--radius);background:var(--bg-2);text-align:center;border:1px solid var(--border)}
.metric .v{font-size:36px;font-weight:800;line-height:1;background:var(--gradient-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.metric .l{margin-top:8px;font-size:13px;color:var(--muted)}
@media (max-width:760px){.metric-grid{grid-template-columns:repeat(2,1fr)}}
/* 引用 */
.quote{padding:32px;border-left:4px solid var(--primary);background:var(--bg-3);border-radius:0 var(--radius) var(--radius) 0;font-size:18px;color:var(--dark);line-height:1.7;font-style:italic;margin:24px 0}
.quote cite{display:block;margin-top:12px;font-size:14px;color:var(--muted);font-style:normal}
/* 标签组 */
.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag-list .tag{font-size:13px;padding:6px 14px;border-radius:99px;background:var(--bg-3);color:var(--primary);font-weight:500}
/* FAQ */
.faq{margin-top:24px}
.faq-item{border-bottom:1px solid var(--border);padding:20px 0}
.faq-q{font-size:17px;font-weight:700;color:var(--dark);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-q::after{content:"+";font-size:24px;color:var(--primary);transition:transform .25s ease}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{margin-top:12px;font-size:15px;color:var(--text-2);line-height:1.8;display:none}
.faq-item.open .faq-a{display:block}
/* 表单 */
.form-row{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:20px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group label{font-size:13px;color:var(--text-2);font-weight:500}
.form-group input,.form-group select,.form-group textarea{padding:12px 16px;border-radius:10px;border:1px solid var(--border);font-size:15px;font-family:inherit;outline:none;transition:border-color .2s ease;background:white;color:var(--text)}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary)}
.form-group textarea{min-height:100px;resize:vertical}
@media (max-width:760px){.form-row{grid-template-columns:1fr}}