*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;-webkit-text-size-adjust:100%}
body{font-family:"PingFang SC","Helvetica Neue","Arial",sans-serif;background:#f7f7f5;color:#111;line-height:1.6}
img{max-width:100%;height:auto;display:block}
a{color:#111;text-decoration:none}
a:hover{text-decoration:underline}
ul{list-style:none}
.container{width:min(1120px,92vw);margin:0 auto}

.site-header{position:sticky;top:0;z-index:100;background:#111;color:#fff}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:.75rem 0;gap:1rem}
.logo{font-weight:900;font-size:.95rem;letter-spacing:.12em;text-transform:uppercase;display:flex;align-items:center;gap:.55rem}
.logo-chip{width:18px;height:18px;background:linear-gradient(135deg,#e63946,#457b9d,#2a9d8f,#f4a261)}
.nav-main{display:flex;flex-wrap:wrap;gap:.35rem 1.2rem;font-size:.82rem;letter-spacing:.04em}
.nav-main a{color:#aaa;font-weight:600;text-transform:uppercase}
.nav-main a.active,.nav-main a:hover{color:#fff;text-decoration:none}
.btn-nav{display:inline-block;background:#fff;color:#111!important;padding:.45rem 1rem;font-weight:800;font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;text-decoration:none!important}
.btn-nav:hover{background:#eee}

.section{padding:3.25rem 0}
.section-title{font-size:clamp(1.2rem,3vw,1.55rem);font-weight:900;letter-spacing:.06em;text-transform:uppercase;margin-bottom:.35rem}
.section-lead{color:#666;font-size:.88rem;margin-bottom:1.75rem;max-width:600px}

.footer{background:#111;color:#888;padding:2.5rem 0 0;font-size:.84rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:2rem;margin-bottom:2rem}
.footer h3{font-size:.82rem;color:#fff;margin-bottom:.65rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.footer a{color:#888}
.footer-links{display:flex;flex-wrap:wrap;gap:.4rem 1rem}
.footer-bottom{border-top:1px solid #333;padding-top:1rem;text-align:center;color:#555;font-size:.75rem;letter-spacing:.04em}

.faq-list{display:flex;flex-direction:column;gap:.45rem}
.faq-item{background:#fff;border:1px solid #ddd}
.faq-q{width:100%;text-align:left;padding:.95rem 1.1rem;font-weight:700;font-size:.88rem;background:transparent;border:none;cursor:pointer;color:#111;display:flex;justify-content:space-between;align-items:center;font-family:inherit;letter-spacing:.02em}
.faq-q::after{content:"+";font-size:1.15rem;color:#999;font-weight:400}
.faq-item.open .faq-q::after{content:"−"}
.faq-a{display:none;padding:0 1.1rem .95rem;font-size:.86rem;color:#666;line-height:1.65}
.faq-item.open .faq-a{display:block}

.btn-solid{display:inline-block;background:#111;color:#fff!important;padding:.65rem 1.35rem;font-weight:800;font-size:.85rem;letter-spacing:.06em;text-transform:uppercase;text-decoration:none!important}
.btn-solid:hover{background:#333}
.btn-outline{display:inline-block;color:#111;border:2px solid #111;padding:.6rem 1.25rem;font-weight:700;font-size:.85rem;letter-spacing:.04em;text-transform:uppercase;text-decoration:none!important;background:#fff}
.btn-outline:hover{background:#f0f0f0}

@media(max-width:768px){
  .header-inner{flex-wrap:wrap}
  .footer-grid{grid-template-columns:1fr}
}