*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;-webkit-text-size-adjust:100%}
body{font-family:"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;background:#f3efe4;color:#2a2a22;line-height:1.65}
img{max-width:100%;height:auto;display:block}
a{color:#2d6a4f;text-decoration:none}
a:hover{text-decoration:underline}
ul{list-style:none}
.container{width:min(1100px,92vw);margin:0 auto}

.site-header{position:sticky;top:0;z-index:100;background:#1e3a2f;border-bottom:4px solid #c9a227}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:.7rem 0;gap:1rem}
.logo{font-weight:800;font-size:1.05rem;color:#f4ecd0;display:flex;align-items:center;gap:.5rem}
.logo-chalk{width:16px;height:16px;background:#c9a227;border-radius:2px}
.nav-main{display:flex;flex-wrap:wrap;gap:.3rem 1.1rem;font-size:.86rem}
.nav-main a{color:#c8d4c4;font-weight:600}
.nav-main a.active,.nav-main a:hover{color:#f4ecd0;text-decoration:none}
.btn-nav{display:inline-block;background:#c9a227;color:#1e3a2f!important;padding:.45rem 1.05rem;font-weight:800;font-size:.82rem;text-decoration:none!important}
.btn-nav:hover{background:#e0b93a}

.section{padding:3.1rem 0}
.section-title{font-size:clamp(1.2rem,3vw,1.5rem);font-weight:800;margin-bottom:.4rem;color:#1e3a2f}
.section-lead{color:#5a5848;font-size:.9rem;margin-bottom:1.7rem;max-width:620px}

.trust{display:flex;flex-wrap:wrap;gap:.6rem}
.trust-cell{background:#fff;border:1px solid #d8d0b8;padding:.7rem .85rem;min-width:92px;text-align:center}
.trust-cell strong{display:block;font-size:1.15rem;color:#2d6a4f;font-weight:800}
.trust-cell span{font-size:.7rem;color:#5a5848}

.footer{background:#1e3a2f;color:#a8b8a8;padding:2.3rem 0 0;font-size:.85rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:1.8rem;margin-bottom:1.6rem}
.footer h3{font-size:.9rem;color:#c9a227;margin-bottom:.6rem;font-weight:800}
.footer a{color:#a8b8a8}
.footer-links{display:flex;flex-wrap:wrap;gap:.35rem .9rem}
.footer-bottom{border-top:1px solid #2d5344;padding-top:.9rem;text-align:center;color:#7a8c7a;font-size:.76rem}

.faq-list{display:flex;flex-direction:column;gap:.5rem}
.faq-item{background:#fff;border:1px solid #d8d0b8;border-left:4px solid #2d6a4f}
.faq-q{width:100%;text-align:left;padding:.95rem 1.1rem;font-weight:800;font-size:.9rem;background:transparent;border:none;cursor:pointer;color:#2a2a22;display:flex;justify-content:space-between;align-items:center;font-family:inherit}
.faq-q::after{content:"+";font-size:1.15rem;color:#2d6a4f}
.faq-item.open .faq-q::after{content:"−"}
.faq-a{display:none;padding:0 1.1rem .95rem;font-size:.86rem;color:#5a5848;line-height:1.7}
.faq-item.open .faq-a{display:block}

.btn-chalk{display:inline-block;background:#c9a227;color:#1e3a2f!important;padding:.62rem 1.3rem;font-weight:800;font-size:.88rem;text-decoration:none!important}
.btn-chalk:hover{background:#e0b93a}
.btn-line{display:inline-block;color:#2d6a4f;border:2px solid #2d6a4f;padding:.56rem 1.2rem;font-weight:700;font-size:.88rem;text-decoration:none!important;background:#fff}

.pin{display:block;font-size:.68rem;letter-spacing:.08em;color:#8a7a40;font-weight:600;margin-bottom:.15rem}

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