/* page1: Hero横幅式布局 */
*{margin:0;padding:0;box-sizing:border-box}
html{font-size:16px;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue","Microsoft YaHei",sans-serif;background:linear-gradient(160deg,#1e40af 0%,#6366f1 40%,#8b5cf6 100%);background-attachment:fixed;color:#1e293b;min-height:100vh;line-height:1.6}

/* topbar */
.topbar{padding:14px 20px 0}
.topbar__inner{max-width:460px;margin:0 auto;font-size:.8rem}
.topbar__crumb{color:rgba(255,255,255,.65)}
.topbar__sep{color:rgba(255,255,255,.4);margin:0 6px}
.topbar__crumb--on{color:rgba(255,255,255,.9);font-weight:500}

/* hero */
.hero{padding:30px 20px 26px}
.hero__inner{max-width:460px;margin:0 auto;text-align:center;background:#fff;border-radius:24px;padding:36px 28px 30px;box-shadow:0 8px 40px rgba(0,0,0,.18)}
.hero__icon{display:block;width:80px;height:80px;margin:0 auto 16px;border-radius:20px;box-shadow:0 4px 14px rgba(0,0,0,.08);object-fit:cover}
.hero__title{font-size:1.9rem;font-weight:700;margin-bottom:6px}
.hero__sub{font-size:.95rem;color:#64748b;margin-bottom:16px}
.hero__tags{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:22px}
.hero__tags span{background:#eef2ff;color:#4338ca;padding:6px 16px;border-radius:20px;font-size:.85rem;font-weight:600}
.hero__btn{display:block;max-width:300px;margin:0 auto;padding:16px 32px;background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;border-radius:14px;text-decoration:none;font-size:1.05rem;font-weight:600;transition:transform .2s,box-shadow .25s}
.hero__btn:hover{transform:translateY(-3px);box-shadow:0 4px 16px rgba(0,0,0,.12)}
.hero__tip{margin-top:14px;font-size:.78rem;color:#94a3b8}

/* main */
.main-w{max-width:460px;margin:0 auto;padding:0 20px 30px}

/* three cards */
.three{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;margin-bottom:24px}
.three__card{background:rgba(255,255,255,.95);border-radius:14px;padding:18px 12px;text-align:center;box-shadow:0 4px 20px rgba(0,0,0,.08)}
.three__icon{font-size:2rem;display:block;margin-bottom:8px}
.three__card h3{font-size:.85rem;color:#1e293b;margin-bottom:6px}
.three__card p{font-size:.72rem;color:#64748b;line-height:1.65}

/* banner */
.banner{background:linear-gradient(135deg,#4f46e5,#7c3aed);border-radius:14px;padding:22px 20px;display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:24px}
.banner__text h2{color:#fff;font-size:1.05rem;margin-bottom:4px}
.banner__text p{color:rgba(255,255,255,.75);font-size:.78rem}
.banner__link{color:#fff;background:rgba(255,255,255,.2);padding:10px 18px;border-radius:10px;text-decoration:none;font-size:.82rem;font-weight:500;white-space:nowrap;transition:background .3s}
.banner__link:hover{background:rgba(255,255,255,.3)}

/* faq */
.faq-sec{background:rgba(255,255,255,.95);border-radius:16px;padding:24px 20px;box-shadow:0 4px 20px rgba(0,0,0,.08)}
.faq-sec__title{font-size:1.15rem;color:#1e293b;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid #6366f1;display:inline-block}
.faq-item{border-bottom:1px solid #e5e7eb;padding:14px 0}
.faq-item:last-child{border-bottom:none}
.faq-item summary{font-size:.92rem;font-weight:600;color:#1e293b;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:1.2rem;color:#6366f1;font-weight:700;transition:transform .2s}
.faq-item[open] summary::after{content:"−"}
.faq-item p{padding-top:10px;font-size:.82rem;color:#64748b;line-height:1.85}

/* footer */
.foot{max-width:460px;margin:0 auto;text-align:center;padding:16px 20px 24px;color:rgba(255,255,255,.55);font-size:.75rem}
.foot a{color:rgba(255,255,255,.7);text-decoration:none}
.foot p{margin-bottom:4px}

@media(max-width:380px){
    .hero__inner{padding:28px 16px 22px}
    .hero__title{font-size:1.6rem}
    .three{grid-template-columns:1fr}
    .banner{flex-direction:column;text-align:center}
}
@media(min-width:768px){
    .hero{padding:50px 20px 36px}
    .hero__title{font-size:2.2rem}
    .three{grid-template-columns:repeat(3,1fr)}
}