/* ============ 文章页配色（与官网首页保持一致） ============ */
:root{
  --bg:#FBF8F4;
  --surface:#FFFFFF;
  --ink:#313F3A;
  --ink-soft:#6E7F79;
  --brand:#6E9C8F;
  --brand-deep:#4C7A6D;
  --brand-soft:#E7F1EE;
  --accent:#DFA184;
  --accent-soft:#FAE9E0;
  --line:#EBE6DE;
  --radius:20px;
  --radius-lg:28px;
  --maxw:1120px;
  --readw:720px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  font-size:17px;
  line-height:1.95;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;}

/* ============ 顶部条 ============ */
.topbar{
  background:#fff;
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:10;
  box-shadow:0 2px 14px rgba(70,90,84,.05);
}
.topbar .wrap{
  display:flex;align-items:center;justify-content:space-between;
  height:62px;max-width:var(--maxw);margin:0 auto;padding:0 24px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  font-weight:700;color:var(--brand-deep);text-decoration:none;font-size:16px;
}
.brand .dot{
  display:inline-grid;width:28px;height:28px;border-radius:50%;
  place-items:center;background:var(--brand);color:#fff;font-size:13px;font-weight:700;
}
.back{
  color:var(--brand-deep);text-decoration:none;font-size:14px;font-weight:600;
  padding:8px 14px;border-radius:999px;background:var(--brand-soft);
}
.back:hover{background:var(--brand);color:#fff;}

/* ============ 阅读容器 ============ */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.read{max-width:var(--readw);margin:0 auto;}

.article-head{padding:56px 0 6px;text-align:center;}
.eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.12em;font-weight:700;
  color:var(--brand);background:var(--brand-soft);
  padding:6px 14px;border-radius:999px;
}
.article-head h1{
  font-size:30px;line-height:1.45;margin:18px 0 12px;color:var(--ink);font-weight:800;
}
.meta-row{color:var(--ink-soft);font-size:14px;margin-bottom:4px;}

.divider{height:1px;background:var(--line);border:0;margin:34px auto;max-width:120px;}

/* ============ 正文 ============ */
.article-body{padding:18px 0 56px;}
.article-body h2{
  font-size:22px;line-height:1.5;margin:42px 0 14px;color:var(--brand-deep);font-weight:800;
  padding-left:14px;border-left:4px solid var(--brand);
}
.article-body h3{
  font-size:18px;line-height:1.5;margin:30px 0 10px;color:var(--ink);font-weight:700;
}
.article-body p{margin:18px 0;color:var(--ink);}
.article-body ul,.article-body ol{padding-left:22px;margin:18px 0;}
.article-body li{margin:10px 0;}
.article-body strong{color:var(--brand-deep);font-weight:700;}
.article-body em{color:var(--ink);font-style:normal;font-weight:600;}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;
  background:var(--brand-soft);border-radius:16px;
  color:var(--brand-deep);font-size:16.5px;line-height:1.9;
}
.article-body blockquote p{margin:8px 0;}
.article-body code{
  background:var(--accent-soft);color:#9a5b3f;
  padding:2px 7px;border-radius:7px;font-size:.92em;
}
.article-body hr{border:0;border-top:1px dashed var(--line);margin:36px 0;}

/* ============ 结尾引导 ============ */
.end-note{
  margin:44px 0 8px;padding:26px 24px;
  background:var(--accent-soft);border-radius:var(--radius);
  color:var(--ink);font-size:15.5px;line-height:1.85;
}
.end-note a{color:var(--brand-deep);font-weight:700;}

/* ============ 页脚 ============ */
.foot{
  background:#38473F;color:#DDE7E3;padding:42px 0 46px;margin-top:40px;
  text-align:center;font-size:14px;border-radius:36px 36px 0 0;line-height:1.9;
}
.foot a{color:#A8D8C8;text-decoration:none;}
.foot a:hover{text-decoration:underline;}

/* ============ 移动端 ============ */
@media (max-width:640px){
  body{font-size:16px;line-height:1.9;}
  .article-head{padding:40px 0 4px;}
  .article-head h1{font-size:24px;}
  .article-body h2{font-size:20px;}
  .topbar .wrap{height:56px;}
  .brand{font-size:14px;}
  .back{font-size:13px;padding:7px 12px;}
}