:root{--bg:#ffffff;--blue:#1060ff;--blueLight:#eaf2ff;--blueBg:#f6f9ff;--text:#0f172a;--muted:#64748b;--line:#e5e7eb}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:"Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB","Heiti SC",sans-serif}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.hero{padding:48px 0}
.hero-wrap{display:grid;grid-template-columns:1fr;gap:24px;align-items:center}
.hero-col-left{text-align:left}
.hero-col-right{display:flex;align-items:center;justify-content:center}
.hero-slot{width:100%;border:1px solid #dbeafe;border-radius:16px;background:var(--blueBg);margin:0 auto 12px}
.hero-img{width:100%;height:auto;display:block;border-radius:16px}
.hero-title{font-size:56px;line-height:1.15;font-weight:800;text-transform:uppercase}
.hero-sub{color:var(--muted);margin-top:8px}
.hero-cta{margin-top:18px;display:flex;gap:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 22px;border-radius:9999px;border:1px solid var(--blue);text-decoration:none;color:var(--blue);background:#fff;text-transform:uppercase;font-weight:700;letter-spacing:.4px}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 6px 14px rgba(16,96,255,.18)}
.btn-outline{background:#fff;color:var(--blue);border-color:var(--blue)}
.section-sub{color:var(--muted);margin-top:8px}
.section.alt{background:#f8fafc}
.section{padding:48px 0;background:#fff}
.section-title{font-size:28px;margin:0 0 16px}
.section-title::before{content:"";display:inline-block;width:12px;height:24px;border-radius:4px;margin-right:10px;background:var(--blue)}
.grid{display:grid;gap:16px}
.cards-4{grid-template-columns:repeat(4,1fr)}
.cards-2{grid-template-columns:repeat(2,1fr)}
.cards-1{grid-template-columns:1fr}
.card,.step-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:0 4px 12px rgba(17,24,39,.06);transition:transform .2s ease,box-shadow .2s ease}
.card:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(17,24,39,.08)}
.icon-wrap{width:40px;height:40px;border-radius:0;background:transparent;border:0;display:flex;align-items:center;justify-content:center;margin:0 auto 12px}
.icon,.card-icon,.stat-icon{width:40px;height:40px;margin-bottom:10px;display:block;stroke:var(--blue);fill:none;stroke-width:2}
.stat .icon-wrap{width:64px;height:64px;margin:0 auto 10px}
.stat .stat-icon{width:64px;height:64px}
.list-check{list-style:none;margin:10px 0 0;padding:0;display:grid;gap:10px}
.list-check li{position:relative;padding-left:28px;color:var(--muted)}
.list-check li::before{content:"✓";position:absolute;left:0;top:50%;transform:translateY(-50%);width:20px;height:20px;border-radius:6px;display:flex;align-items:center;justify-content:center;background:var(--blue);color:#fff;font-weight:700}
.step-card{display:block}
.step-head{display:flex;align-items:center;gap:10px}
.step-badge{width:0;height:0;border-top:12px solid transparent;border-bottom:12px solid transparent;border-left:24px solid var(--blue);margin:0;filter:drop-shadow(0 4px 8px rgba(16,96,255,.12));flex:0 0 auto}
.step-content h3{margin:0}
#steps .list-check li{padding-left:18px}
#steps .list-check li::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:10px;height:10px;border-radius:50%;display:block;background:var(--blue)}
#inside .list-check li{padding-left:0}
#inside .list-check li::before{display:none;content:none}
#who .list-check li{padding-left:18px}
#who .list-check li::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:10px;height:10px;border-radius:50%;display:block;background:var(--blue)}
.note{margin-top:8px;color:var(--muted)}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:8px}
.stat{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;text-align:center}
.stat .stat-icon{width:64px;height:64px;margin:0 auto 10px}
.stat-num{font-size:40px;font-weight:800;color:var(--blue)}
.stat-label{color:var(--muted);margin-top:8px}
.faq .faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:0;overflow:hidden}
.faq .faq-q{width:100%;text-align:left;background:#fff;border:0;padding:16px;font-size:16px;color:var(--text);cursor:pointer}
.faq .faq-a{display:none;padding:0 16px 16px;color:var(--muted)}
.faq .faq-item.open .faq-a{display:block}
#why .card h3{text-align:center}
.footer{padding:24px 0;border-top:1px solid var(--line);background:#fff;text-align:center}
.footer .policy-link{color:var(--blue);text-decoration:none;font-weight:700}
.footer .policy-link:hover{text-decoration:underline}
.modal-overlay{position:fixed;left:0;top:0;right:0;bottom:0;background:rgba(17,24,39,.4);display:none;align-items:center;justify-content:center;z-index:1000;padding:16px}
.modal-overlay.open{display:flex}
.modal{background:#fff;border:1px solid var(--line);border-radius:16px;max-width:860px;width:100%;max-height:80vh;overflow:auto;box-shadow:0 16px 40px rgba(17,24,39,.18)}
.modal-head{padding:18px 22px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}
.modal-title{margin:0;font-size:20px}
.modal-close{background:#fff;border:0;color:var(--muted);font-size:22px;line-height:1;cursor:pointer}
.modal-body{padding:18px 22px;color:var(--text)}
.modal-body h4,.modal-body h5{margin:18px 0 8px;font-size:18px;color:var(--text)}
.modal-body p{margin:8px 0;color:var(--muted)}
.list-bullets{list-style:disc;margin:10px 0 0 22px;color:var(--muted)}
@media (max-width:1024px){.cards-4{grid-template-columns:repeat(2,1fr)}.metrics{grid-template-columns:repeat(2,1fr)}.hero-title{font-size:44px}.hero-wrap{grid-template-columns:1fr}}
@media (max-width:680px){.cards-4,.cards-2{grid-template-columns:1fr}.metrics{grid-template-columns:1fr}.hero-title{font-size:34px}}