/* 长图详情海报样式 — 编辑感、绿色主调、专业付费课程 app 风格 */

.lf-poster {
  width: 1080px;
  background: #ffffff;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans CN", sans-serif;
  color: #1f2933;
  line-height: 1.55;
  padding: 60px 70px 70px;
  box-sizing: border-box;
}

/* ─── 顶部品牌行 ─── */
.lf-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  font-size: 18px;
}
.lf-brand {
  font-weight: 700;
  color: #1f2933;
}
.lf-tagline {
  background: #d8efdf;
  color: #15803d;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
}

/* ─── 主标题区 ─── */
.lf-kicker {
  font-size: 22px;
  color: #5d6671;
  margin-bottom: 12px;
}
.lf-title {
  font-size: 76px;
  font-weight: 900;
  letter-spacing: -1.5px;
  line-height: 1.05;
  color: #0a0a0a;
  margin: 0 0 28px;
}
.lf-subtitle {
  font-size: 26px;
  color: #2c3540;
  font-weight: 500;
  margin: 0 0 32px;
  line-height: 1.5;
}

/* ─── Hero pitch 块 ─── */
.lf-hero-pitch {
  background: #f6f7f9;
  border-left: 4px solid #15803d;
  padding: 28px 32px;
  margin-bottom: 56px;
  border-radius: 4px;
}
.lf-hero-pitch-text {
  font-size: 22px;
  font-weight: 600;
  color: #1f2933;
  margin: 0 0 14px;
  line-height: 1.5;
}
.lf-hero-pitch-detail {
  font-size: 18px;
  color: #5d6671;
  margin: 0;
  line-height: 1.7;
}

/* ─── 章节通用 ─── */
.lf-section {
  margin-bottom: 52px;
}
.lf-section-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 28px;
  font-weight: 800;
  color: #0a0a0a;
  margin: 0 0 24px;
}
.lf-section-title::before {
  content: "●";
  color: #15803d;
  font-size: 22px;
}
.lf-section-intro {
  font-size: 19px;
  color: #5d6671;
  line-height: 1.75;
  margin: 0 0 24px;
}

/* ─── two_col_tags ─── */
.lf-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.lf-tag-col {
  background: #f6f7f9;
  padding: 24px 26px;
  border-radius: 8px;
  border-top: 4px solid;
}
.lf-tag-col.green { border-top-color: #15803d; }
.lf-tag-col.red { border-top-color: #dc2626; }
.lf-tag-col-label {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 16px;
}
.lf-tag-col.green .lf-tag-col-label { color: #15803d; }
.lf-tag-col.red .lf-tag-col-label { color: #dc2626; }
.lf-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.lf-tag {
  display: inline-block;
  padding: 7px 14px;
  border-radius: 6px;
  font-size: 17px;
  font-weight: 500;
  background: #ebedf0;
  color: #2c3540;
}
.lf-tag-col.green .lf-tag { background: #e8f5ec; color: #15803d; }
.lf-tag-col.red .lf-tag { background: #fde8e8; color: #dc2626; }

/* ─── pillar_grid ─── */
.lf-pillar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(0, 1fr));
  gap: 16px;
}
.lf-pillar {
  background: #f6f7f9;
  padding: 22px 24px;
  border-radius: 8px;
}
.lf-pillar-title {
  font-size: 22px;
  font-weight: 800;
  color: #dc2626;
  margin: 0 0 10px;
}
.lf-pillar-desc {
  font-size: 17px;
  color: #2c3540;
  margin: 0;
  line-height: 1.65;
}

/* ─── numbered_grid ─── */
.lf-num-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 18px;
}
.lf-num-card {
  background: #f6f7f9;
  padding: 22px 22px;
  border-radius: 8px;
}
.lf-num-num {
  font-size: 26px;
  font-weight: 900;
  color: #15803d;
  line-height: 1;
  margin: 0 0 12px;
}
.lf-num-title {
  font-size: 19px;
  font-weight: 700;
  color: #1f2933;
  margin: 0;
  line-height: 1.4;
}
.lf-num-tags {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 16px;
}
.lf-num-tag {
  background: #ebedf0;
  padding: 14px 18px;
  border-radius: 6px;
  font-size: 17px;
  font-weight: 500;
  color: #2c3540;
  text-align: center;
}

/* ─── agenda ─── */
.lf-agenda-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.lf-agenda-item {
  display: grid;
  grid-template-columns: 100px 110px 1fr;
  gap: 20px;
  align-items: start;
  padding: 20px 22px;
  background: #f6f7f9;
  border-radius: 8px;
}
.lf-agenda-label {
  font-size: 18px;
  font-weight: 800;
  color: #1f2933;
}
.lf-agenda-date {
  font-size: 18px;
  font-weight: 700;
  color: #15803d;
}
.lf-agenda-title {
  font-size: 20px;
  font-weight: 700;
  color: #0a0a0a;
  margin: 0 0 6px;
}
.lf-agenda-desc {
  font-size: 17px;
  color: #5d6671;
  margin: 0;
  line-height: 1.55;
}
.lf-agenda-footer {
  margin-top: 18px;
  font-size: 16px;
  color: #5d6671;
  background: #ebedf0;
  padding: 16px 20px;
  border-radius: 6px;
  line-height: 1.65;
}

/* ─── info_grid ─── */
.lf-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.lf-info-cell {
  background: #f6f7f9;
  padding: 22px 26px;
  border-radius: 8px;
}
.lf-info-label {
  font-size: 16px;
  color: #5d6671;
  margin: 0 0 8px;
  font-weight: 500;
}
.lf-info-value {
  font-size: 20px;
  color: #1f2933;
  font-weight: 700;
  margin: 0;
  line-height: 1.5;
  white-space: pre-line;
}

/* ─── callout ─── */
.lf-callout {
  padding: 24px 28px;
  border-radius: 10px;
  margin-bottom: 28px;
}
.lf-callout.dark {
  background: #1f2933;
  color: #d8d8d8;
}
.lf-callout.warning {
  background: #fef9e7;
  border: 1px solid #f5e3a3;
  color: #6b5400;
}
.lf-callout-title {
  font-size: 22px;
  font-weight: 800;
  margin: 0 0 12px;
}
.lf-callout.dark .lf-callout-title { color: #ffffff; }
.lf-callout-body {
  font-size: 17px;
  margin: 0;
  line-height: 1.75;
}

/* ─── prose ─── */
.lf-prose-body {
  font-size: 18px;
  color: #2c3540;
  line-height: 1.75;
}

/* ─── 底部 footer ─── */
.lf-footer {
  background: #1f2933;
  border-radius: 12px;
  padding: 36px 40px;
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 32px;
  align-items: center;
  margin-top: 36px;
}
.lf-footer-title {
  font-size: 30px;
  font-weight: 800;
  color: #ffffff;
  margin: 0 0 12px;
}
.lf-footer-body {
  font-size: 17px;
  color: #d0d4d9;
  margin: 0;
  line-height: 1.65;
}
.lf-footer-qr {
  width: 220px;
  height: 220px;
  background: #ffffff;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: #5d6671;
}

/* ─── tail brand ─── */
.lf-tail {
  margin-top: 18px;
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  color: #86919e;
}