/* 主题1 科技深蓝 */
:root{--c:#1a4bff;--c2:#0a2540;--a:#00d4ff;--s:#f0f5ff;--txt:#1a2540;--muted:#5a6b8a}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;color:var(--txt);line-height:1.7;background:#fff;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1280px;margin:0 auto;padding:0 24px}

/* 顶部导航 */
.nav{position:fixed;top:0;left:0;right:0;z-index:999;background:rgba(255,255,255,.92);backdrop-filter:blur(20px);border-bottom:1px solid rgba(26,75,255,.1);transition:all .3s}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{font-size:22px;font-weight:900;background:linear-gradient(135deg,var(--c),var(--a));-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:1px}
.logo span{color:#0a2540}
.nav-menu{display:flex;gap:36px;align-items:center}
.nav-menu a{font-size:15px;font-weight:500;color:#333;transition:color .2s;position:relative}
.nav-menu a:hover{color:var(--c)}
.nav-menu a::after{content:"";position:absolute;bottom:-6px;left:0;width:0;height:2px;background:var(--c);transition:width .3s}
.nav-menu a:hover::after{width:100%}
.nav-cta{padding:10px 22px;background:linear-gradient(135deg,var(--c),var(--a));color:#fff!important;border-radius:100px;font-weight:600;font-size:14px;box-shadow:0 4px 14px rgba(26,75,255,.3)}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(26,75,255,.4)}

/* Hero 区域 */
.hero{position:relative;min-height:720px;display:flex;align-items:center;background:linear-gradient(135deg,#0a2540 0%,#1a4bff 60%,#00d4ff 100%);color:#fff;overflow:hidden;padding-top:72px}
.hero::before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 20% 30%,rgba(0,212,255,.3) 0%,transparent 50%),radial-gradient(circle at 80% 70%,rgba(26,75,255,.4) 0%,transparent 50%);animation:float 12s ease-in-out infinite}
@keyframes float{0%,100%{transform:translate(0,0)}50%{transform:translate(20px,-20px)}}
.hero-inner{position:relative;z-index:2;max-width:1280px;margin:0 auto;padding:80px 24px;display:grid;grid-template-columns:1.2fr 1fr;gap:80px;align-items:center}
.hero-badge{display:inline-block;padding:6px 18px;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.3);border-radius:100px;font-size:13px;margin-bottom:24px;backdrop-filter:blur(10px)}
.hero h1{font-size:54px;font-weight:900;line-height:1.15;margin-bottom:24px;letter-spacing:-1px}
.hero h1 .hl{background:linear-gradient(135deg,#00d4ff,#7afcff);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:18px;opacity:.92;margin-bottom:40px;max-width:560px}
.hero-stats{display:flex;gap:48px;margin-bottom:40px;flex-wrap:wrap}
.stat .n{font-size:36px;font-weight:900;background:linear-gradient(135deg,#00d4ff,#fff);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .l{font-size:13px;opacity:.8;margin-top:4px}
.hero-cta{display:inline-flex;align-items:center;gap:12px;padding:16px 36px;background:#fff;color:var(--c);border-radius:100px;font-weight:700;font-size:16px;box-shadow:0 12px 32px rgba(0,0,0,.2);transition:all .3s}
.hero-cta:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(0,0,0,.3)}
.hero-card{position:relative;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);border-radius:24px;padding:32px;backdrop-filter:blur(20px);box-shadow:0 24px 60px rgba(0,0,0,.3)}
.hero-card h3{font-size:18px;margin-bottom:20px;display:flex;align-items:center;gap:10px}
.hero-card h3::before{content:"";width:8px;height:8px;background:#00d4ff;border-radius:50%;box-shadow:0 0 12px #00d4ff;animation:pulse 1.5s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.mini-item{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.1);font-size:14px}
.mini-item:last-child{border:0}
.mini-item .dot{width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,#00d4ff,#1a4bff);flex-shrink:0}

/* 通用 section */
section{padding:96px 0}
.section-head{text-align:center;max-width:760px;margin:0 auto 64px}
.section-eyebrow{display:inline-block;padding:4px 16px;background:var(--s);color:var(--c);border-radius:100px;font-size:13px;font-weight:600;margin-bottom:16px}
.section-head h2{font-size:42px;font-weight:900;line-height:1.2;margin-bottom:16px;letter-spacing:-1px}
.section-head p{font-size:17px;color:var(--muted)}

/* 卡片 */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.card{background:#fff;border:1px solid #e8edf5;border-radius:20px;padding:36px 32px;transition:all .3s;position:relative;overflow:hidden}
.card::before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,var(--c),var(--a));transform:scaleX(0);transform-origin:left;transition:transform .4s}
.card:hover{transform:translateY(-6px);box-shadow:0 24px 60px rgba(26,75,255,.12);border-color:transparent}
.card:hover::before{transform:scaleX(1)}
.card .icon{width:56px;height:56px;border-radius:16px;background:var(--s);display:flex;align-items:center;justify-content:center;margin-bottom:20px;font-size:28px}
.card h3{font-size:20px;font-weight:700;margin-bottom:12px}
.card p{color:var(--muted);font-size:14px;line-height:1.7}

/* 优势 */
.adv-bg{background:linear-gradient(180deg,#f7faff 0%,#fff 100%)}
.adv-card{background:#fff;border-radius:20px;padding:32px;text-align:center;border:1px solid #e8edf5}
.adv-num{font-size:48px;font-weight:900;background:linear-gradient(135deg,var(--c),var(--a));-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:8px}

/* 行业 */
.ind-grid .card{text-align:center}

/* 流程 */
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.process::before{content:"";position:absolute;top:48px;left:5%;right:5%;height:2px;background:linear-gradient(90deg,var(--c),var(--a));z-index:0}
.proc-step{position:relative;z-index:1;text-align:center}
.proc-step .n{width:96px;height:96px;margin:0 auto 20px;background:linear-gradient(135deg,var(--c),var(--a));color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:36px;font-weight:900;box-shadow:0 12px 30px rgba(26,75,255,.3)}
.proc-step h4{font-size:18px;margin-bottom:8px}
.proc-step p{font-size:14px;color:var(--muted)}

/* FAQ */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{background:#fff;border:1px solid #e8edf5;border-radius:16px;padding:24px 28px;margin-bottom:16px;cursor:pointer;transition:all .2s}
.faq-item:hover{border-color:var(--c);box-shadow:0 8px 24px rgba(26,75,255,.08)}
.faq-q{display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:16px}
.faq-q::after{content:"+";color:var(--c);font-size:24px;font-weight:300;transition:transform .2s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{margin-top:14px;color:var(--muted);font-size:14px;line-height:1.8;max-height:0;overflow:hidden;transition:max-height .3s}
.faq-item.open .faq-a{max-height:300px}

/* 联系表单 */
.cta-bg{background:linear-gradient(135deg,#0a2540 0%,#1a4bff 100%);color:#fff;border-radius:32px;padding:80px 64px;position:relative;overflow:hidden}
.cta-bg::before{content:"";position:absolute;top:-50%;right:-10%;width:600px;height:600px;background:radial-gradient(circle,rgba(0,212,255,.3),transparent 70%)}
.cta-form{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:40px;max-width:600px}
.cta-form input{padding:16px 20px;border-radius:12px;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.08);color:#fff;font-size:15px;font-family:inherit}
.cta-form input::placeholder{color:rgba(255,255,255,.6)}
.cta-form input:focus{outline:0;border-color:var(--a)}
.cta-form button{grid-column:1/-1;padding:18px;background:linear-gradient(135deg,var(--a),#7afcff);color:#0a2540;border:0;border-radius:12px;font-size:16px;font-weight:700;cursor:pointer;font-family:inherit;transition:all .2s}
.cta-form button:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(0,212,255,.4)}

/* Footer */
footer{background:#0a1830;color:#c8d2e8;padding:60px 0 30px;margin-top:80px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px}
.foot-col h5{color:#fff;font-size:16px;margin-bottom:20px}
.foot-col a{display:block;font-size:14px;padding:6px 0;transition:color .2s}
.foot-col a:hover{color:var(--a)}
.foot-city{display:grid;grid-template-columns:repeat(5,1fr);gap:8px 12px;margin-top:24px}
.foot-city a{font-size:13px;padding:6px 0;color:#8b9bbb}
.foot-city a:hover{color:var(--a)}
.foot-bot{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;font-size:13px;color:#6b7a96}

/* 响应式 */
@media (max-width:980px){
  .nav-menu{display:none}
  .hero-inner,.grid-3,.grid-4,.foot-grid,.process{grid-template-columns:1fr;gap:32px}
  .hero h1{font-size:36px}
  .section-head h2{font-size:30px}
  .cta-bg{padding:48px 24px}
  .foot-city{grid-template-columns:repeat(3,1fr)}
}