.yjd-flatpack {
  --accent:#F5B418;
  --dark:#111827;
  --muted:#526071;
  --line:#e5e7eb;
  --light:#fff9ea;
  font-family:Arial,Helvetica,sans-serif;
  color:var(--dark);
  font-size:16px;
  line-height:1.8;
  max-width:1120px;
  margin:0 auto;
  padding:12px 16px 36px;
}
.yjd-flatpack * {box-sizing:border-box;}
.yjd-flatpack h2 {
  font-size:27px;
  line-height:1.35;
  margin:38px 0 16px;
  font-weight:700;
  color:var(--dark);
}
.yjd-flatpack h2:before {
  content:"";
  display:inline-block;
  width:5px;
  height:25px;
  background:var(--accent);
  border-radius:3px;
  vertical-align:-4px;
  margin-right:12px;
}
.yjd-flatpack h3 {
  font-size:20px;
  line-height:1.45;
  margin:24px 0 10px;
  color:var(--dark);
}
.yjd-flatpack p {margin:0 0 15px;}
.yjd-flatpack a {
  color:#875b00;
  text-decoration:underline;
  text-underline-offset:3px;
}
.yjd-flatpack ul,.yjd-flatpack ol {
  padding-left:24px;
  margin:12px 0 20px;
}
.yjd-flatpack li {margin-bottom:8px;}
.yjd-flatpack .intro {
  font-size:17px;
}
.yjd-flatpack .highlights {
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:12px;
  margin:24px 0;
}
.yjd-flatpack .highlight {
  padding:18px 14px;
  border:1px solid var(--line);
  border-top:4px solid var(--accent);
  border-radius:8px;
  background:#fff;
}
.yjd-flatpack .highlight strong {
  display:block;
  font-size:16px;
  line-height:1.5;
}
.yjd-flatpack .highlight span {
  display:block;
  font-size:13px;
  color:var(--muted);
  margin-top:5px;
  line-height:1.5;
}
.yjd-flatpack .video-wrap {
  max-width:860px;
  margin:20px auto 10px;
}
.yjd-flatpack video {
  display:block;
  width:100%;
  height:auto;
  border-radius:10px;
  background:#111;
}
.yjd-flatpack .caption {
  text-align:center;
  font-size:13px;
  color:var(--muted);
  margin:10px 0 20px;
}
.yjd-flatpack .table-scroll {
  overflow-x:auto;
  margin:18px 0 24px;
  border:1px solid var(--line);
  border-radius:8px;
}
.yjd-flatpack table {
  width:100%;
  border-collapse:collapse;
  min-width:620px;
  font-size:15px;
}
.yjd-flatpack th {
  background:var(--accent);
  color:#111827;
  text-align:left;
  padding:13px 15px;
}
.yjd-flatpack td {
  border-top:1px solid var(--line);
  padding:12px 15px;
  vertical-align:top;
}
.yjd-flatpack tbody tr:nth-child(even) {
  background:#fafafa;
}
.yjd-flatpack .two-col {
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
  margin:18px 0;
}
.yjd-flatpack .panel {
  border:1px solid var(--line);
  padding:20px;
  border-radius:8px;
  background:#fff;
}
.yjd-flatpack .panel h3 {margin-top:0;}
.yjd-flatpack .tip {
  background:var(--light);
  border-left:4px solid var(--accent);
  padding:16px 20px;
  margin:20px 0;
  border-radius:0 8px 8px 0;
}
.yjd-flatpack .cta {
  background:var(--light);
  border:1px solid #f2d990;
  border-radius:10px;
  padding:26px;
  margin:30px 0;
  text-align:center;
}
.yjd-flatpack .cta h3 {margin:0 0 10px;}
.yjd-flatpack .btn {
  display:inline-block;
  background:var(--accent);
  color:#111827;
  padding:11px 25px;
  border-radius:5px;
  font-weight:700;
  text-decoration:none;
  margin:12px 0 0;
}
.yjd-flatpack .faq {
  border-bottom:1px solid var(--line);
  padding:15px 0;
}
.yjd-flatpack .faq h3 {
  font-size:17px;
  margin:0 0 8px;
}
.yjd-flatpack .faq p {margin:0;}
.yjd-flatpack .related {
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px;
  margin-top:18px;
}
.yjd-flatpack .related a {
  display:block;
  border:1px solid var(--line);
  border-radius:7px;
  padding:13px 16px;
  font-weight:600;
  text-decoration:none;
}
.yjd-flatpack .related a:hover {
  border-color:var(--accent);
  background:var(--light);
}
@media(max-width:700px){
  .yjd-flatpack {font-size:15px;padding:10px 12px;}
  .yjd-flatpack h2 {font-size:23px;}
  .yjd-flatpack h3 {font-size:18px;}
  .yjd-flatpack .intro {font-size:16px;}
  .yjd-flatpack .highlights {grid-template-columns:repeat(2,1fr);}
  .yjd-flatpack .two-col,
  .yjd-flatpack .related {grid-template-columns:1fr;}
  .yjd-flatpack .cta {padding:22px 16px;}
}