*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-font-smoothing:antialiased;scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;color:#1e293b;line-height:1.6;background:#fff;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.container{width:92%;max-width:1200px;margin:0 auto}

/* Header */
.header{position:fixed;top:0;left:0;width:100%;z-index:100;padding:18px 0;transition:all .4s ease}
.header.scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);box-shadow:0 1px 20px rgba(0,0,0,.06);padding:10px 0}
.header-inner{display:flex;align-items:center;justify-content:space-between}
.header-logo img{height:36px;transition:height .3s}
.header.scrolled .header-logo img{height:30px}
.header-nav{display:flex;align-items:center;gap:4px}
.header-nav a{padding:8px 14px;font-size:14px;font-weight:500;color:#475569;border-radius:8px;transition:all .25s;white-space:nowrap}
.header-nav a:hover{color:#0ea5e9;background:rgba(14,165,233,.06)}
.header-cta{display:inline-flex;align-items:center;padding:9px 22px;font-size:14px;font-weight:600;color:#fff!important;background:linear-gradient(135deg,#0ea5e9,#0284c7);border-radius:999px;transition:all .3s;box-shadow:0 4px 16px rgba(14,165,233,.3)}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(14,165,233,.4)}
@media(max-width:1000px){.header-nav a:not(.header-cta){display:none}}

/* Inner Banner */
.inner-banner{position:relative;min-height:520px;display:flex;align-items:center;background:url(../../../image/prod/background.png) center/cover no-repeat;overflow:hidden}
.inner-banner::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 70%,rgba(255,255,255,.8) 95%,#fff 100%);pointer-events:none}
.banner-content{position:relative;z-index:1;max-width:680px}
.banner-eyebrow{display:inline-block;padding:6px 16px;background:rgba(14,165,233,.08);color:#0ea5e9;border-radius:999px;font-size:13px;font-weight:600;margin-bottom:20px;letter-spacing:.04em}
.banner-title{font-size:clamp(32px,4.5vw,52px);font-weight:800;color:#0f172a;line-height:1.2;margin-bottom:16px}
.banner-title span{background:linear-gradient(135deg,#0ea5e9,#0284c7);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.banner-desc{font-size:17px;color:#475569;line-height:1.8;margin-bottom:32px;max-width:520px}
.banner-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn-primary{display:inline-flex;align-items:center;padding:14px 36px;font-size:15px;font-weight:700;color:#fff;background:linear-gradient(135deg,#0ea5e9,#0284c7);border-radius:999px;transition:all .3s;box-shadow:0 8px 28px rgba(14,165,233,.35)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 36px rgba(14,165,233,.45)}
.btn-ghost{display:inline-flex;align-items:center;padding:14px 36px;font-size:15px;font-weight:600;color:#475569;border-radius:999px;border:1px solid #cbd5e1;transition:all .3s}
.btn-ghost:hover{background:rgba(14,165,233,.04);border-color:#0ea5e9;color:#0ea5e9}

/* Section */
.section{padding:100px 0}
.section-alt{background:#f8fafc}
.section-header{text-align:center;margin-bottom:60px}
.section-header h2{font-size:clamp(26px,3.5vw,36px);font-weight:800;color:#0f172a;margin-bottom:12px;letter-spacing:-.02em}
.section-header p{font-size:16px;color:#64748b;max-width:600px;margin:0 auto;line-height:1.7}

/* Feature Grid */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{padding:36px;background:#fff;border:1px solid #f1f5f9;border-radius:20px;transition:all .35s;text-align:center}
.feature-card:hover{transform:translateY(-6px);box-shadow:0 12px 36px rgba(0,0,0,.08)}
.feature-icon{width:64px;height:64px;border-radius:18px;background:linear-gradient(135deg,rgba(14,165,233,.08),rgba(14,165,233,.08));display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:30px;color:#0ea5e9}
.feature-card h3{font-size:19px;font-weight:700;color:#0f172a;margin-bottom:10px}
.feature-card p{font-size:14px;color:#64748b;line-height:1.7}
@media(max-width:768px){.feature-grid{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.feature-grid{grid-template-columns:1fr}}

/* How it Works */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.steps::before{content:"";position:absolute;top:36px;left:15%;right:15%;height:2px;background:linear-gradient(90deg,#e2e8f0,#0ea5e9,#e2e8f0);z-index:0}
.step{text-align:center;position:relative;z-index:1}
.step-num{width:72px;height:72px;border-radius:50%;position:relative;z-index:2;background:linear-gradient(135deg,#0ea5e9,#0284c7);color:#fff;font-size:28px;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;box-shadow:0 8px 24px rgba(14,165,233,.25)}
.step h4{font-size:17px;font-weight:700;color:#0f172a;margin-bottom:8px}
.step p{font-size:14px;color:#64748b;line-height:1.6}
@media(max-width:768px){.steps{grid-template-columns:1fr 1fr}.steps::before{display:none}}
@media(max-width:480px){.steps{grid-template-columns:1fr}}

/* Capability Rows */
.cap-row{display:flex;align-items:center;gap:64px;margin-bottom:80px}
.cap-row:last-child{margin-bottom:0}
.cap-row.reverse{flex-direction:row-reverse}
.cap-text{flex:1}
.cap-text h3{font-size:26px;font-weight:800;color:#0f172a;margin-bottom:8px}
.cap-tagline{font-size:15px;font-weight:600;color:#0ea5e9;margin-bottom:14px}
.cap-desc{font-size:15px;color:#64748b;line-height:1.9;margin-bottom:20px}
.cap-list{display:flex;flex-direction:column;gap:10px}
.cap-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:#475569;line-height:1.6}
.cap-list li::before{content:"\f00c";font-family:FontAwesome;color:#0ea5e9;font-size:14px;flex-shrink:0;margin-top:3px}
.cap-image{flex:1;display:flex;align-items:center;justify-content:center}
.cap-image img{border-radius:20px;box-shadow:0 12px 40px rgba(0,0,0,.1);max-width:100%}
@media(max-width:768px){.cap-row,.cap-row.reverse{flex-direction:column;gap:32px}}

/* Scenarios */
.scenario-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.scenario-card{padding:36px;background:#fff;border:1px solid #f1f5f9;border-radius:20px;transition:all .35s}
.scenario-card:hover{transform:translateY(-6px);box-shadow:0 12px 36px rgba(0,0,0,.08)}
.scenario-card h3{font-size:19px;font-weight:700;color:#0f172a;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.scenario-card h3 i{color:#0ea5e9;font-size:22px}
.scenario-card p{font-size:14px;color:#64748b;line-height:1.7}
@media(max-width:768px){.scenario-grid{grid-template-columns:1fr}}

/* CTA Banner */
.cta-banner{background:linear-gradient(135deg,#0ea5e9,#0284c7);padding:80px 0;text-align:center;position:relative;overflow:hidden}
.cta-banner::before{content:"";position:absolute;width:400px;height:400px;border-radius:50%;background:rgba(255,255,255,.05);top:-200px;right:-200px;pointer-events:none}
.cta-banner h2{font-size:clamp(26px,3vw,36px);font-weight:800;color:#fff;margin-bottom:14px}
.cta-banner p{font-size:17px;color:rgba(255,255,255,.85);margin-bottom:32px;max-width:560px;margin-left:auto;margin-right:auto;line-height:1.7}
.cta-banner .btn-primary{background:#fff;color:#0ea5e9;box-shadow:0 8px 28px rgba(0,0,0,.2)}
.cta-banner .btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 40px rgba(0,0,0,.3)}

/* Footer */
.footer{background:#f4f7fc;color:#333;padding:64px 0 0}
.footer-promises{display:flex;justify-content:space-between;max-width:1200px;margin:0 auto;padding:32px 0;border-bottom:1px solid #e8e8e8;margin-bottom:32px;flex-wrap:wrap}
.footer-promise{display:flex;align-items:flex-start;gap:14px;flex:0 0 auto}
.footer-promise img{width:48px;height:48px;flex-shrink:0}
.footer-promise strong{display:block;font-size:16px;font-weight:700;color:#1a1a1a;margin-bottom:4px}
.footer-promise span{font-size:12px;color:#666;line-height:1.5}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px}
.footer-logo img{height:72px;margin-bottom:16px}
.footer-col h4{font-size:15px;font-weight:700;color:#1a1a1a;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:#666;transition:all .25s}
.footer-col a:hover{color:#0066ff;padding-left:4px}
.footer-contact li{font-size:14px;color:#666;line-height:1.7}
.footer-qrcodes{display:flex;gap:16px;margin-top:16px}
.footer-qr{text-align:center}
.footer-qr img{width:80px;height:80px;border-radius:8px;object-fit:cover;background:#fff;padding:4px;margin-bottom:6px;border:1px solid #eee}
.footer-qr span{font-size:11px;color:#666}
.footer-bottom{border-top:1px solid #e8e8e8;padding:20px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:12px;color:#999}
.footer-bottom a{color:#999;transition:color .25s}
.footer-bottom a:hover{color:#333}
.footer-beian{display:inline-flex;align-items:center;gap:4px}
.footer-beian img{height:14px}
@media(max-width:1000px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:768px){.footer-promises{flex-direction:column;padding:20px 16px}.footer-promise{margin:0}}
@media(max-width:640px){.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column;text-align:center}}

/* Reveal */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:translateY(0)}