/* ============================================================
   footer.css — 全站统一页脚（.site-footer）
   深色底 · 品牌栏 + 三列链接 + 底条；calculator 等页可插 .sf-legal
   所有页面在 </main> 后放置统一结构，<link> 引入本文件
   ============================================================ */

.site-footer{
  display:block;
  background:#1B1913;
  border-top:1px solid rgba(233,223,201,.12);
  color:#8F887A;
  font-size:.84rem;
  line-height:1.8;
  margin:0;
  padding:0;
  max-width:none;
  width:100%;
}
.site-footer .sf-wrap{max-width:1180px;margin:0 auto;padding:54px 24px 28px}
.site-footer a{color:#B9B09E;text-decoration:none;transition:color .18s}
.site-footer a:hover{color:#E2C583}

/* 品牌栏 + 三列 */
.site-footer .brand-mark{box-shadow:0 0 0 1px rgba(233,223,201,.25)}
.sf-grid{display:grid;grid-template-columns:1.55fr 1fr 1fr 1fr;gap:36px}
.sf-brand .sf-logo{display:flex;align-items:center;gap:10px}
.sf-brand .sf-logo .brand-mark{flex:none}
.sf-brand .sf-logo b{font-family:'Source Han Serif SC','Songti SC',serif;font-size:1.02rem;color:#EDE6D6;letter-spacing:3px;font-weight:700;display:block;line-height:1.4}
.sf-brand .sf-logo i{font-style:normal;font-size:.66rem;color:#6E6759;letter-spacing:2px;display:block}
.sf-brand p{margin-top:14px;font-size:.78rem;line-height:1.95;color:#8F887A;max-width:30em}
.sf-col h5{font-family:inherit;font-size:.7rem;font-weight:600;letter-spacing:2.5px;color:#6E6759;margin:4px 0 14px}
.sf-col a{display:block;padding:4px 0;font-size:.8rem}

/* 页面附加说明（如 calculator 数据/费用说明） */
.sf-legal{margin-top:34px;padding-top:18px;border-top:1px dashed rgba(233,223,201,.12);font-size:.7rem;line-height:1.85;color:#6E6759}
.sf-legal p+p{margin-top:8px}

/* 底条 */
.sf-bar{margin-top:36px;padding-top:18px;border-top:1px solid rgba(233,223,201,.1);
  display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;font-size:.72rem;color:#6E6759}
.sf-bar .sf-maker{display:inline-flex;align-items:center;gap:8px}
.sf-bar .sf-maker i{width:6px;height:6px;border-radius:50%;background:#C9A876;box-shadow:0 0 0 3px rgba(201,168,118,.18)}
.sf-bar button{background:none;border:none;color:#B9B09E;font:inherit;cursor:pointer;padding:0;border-bottom:1px dashed #6E6759}
.sf-bar button:hover{color:#E2C583}

@media (max-width:900px){
  .site-footer .sf-wrap{padding:44px 18px 24px}
  .sf-grid{grid-template-columns:1fr 1fr;gap:28px}
  .sf-brand{grid-column:1/-1}
}
@media (max-width:520px){
  .sf-grid{grid-template-columns:1fr 1fr;gap:22px}
  .sf-bar{flex-direction:column;align-items:flex-start}
}