/**
 * 炎黄盈动学习中心 — 枢纽页 / 留存 / 商机转化
 */
body.yhyd-page {
  background: #f8fafc !important;
  color: #111827;
}
body.yhyd-page::before {
  display: none !important;
}

.yhyd-hub-toc {
  padding: 1.15rem 0;
  background: #fff;
  border-bottom: 1px solid #f1f5f9;
  position: sticky;
  top: 99px;
  z-index: 40;
}
.yhyd-hub-toc__label {
  font-size: 0.75rem;
  font-weight: 600;
  color: #64748b;
  margin: 0 0 0.65rem;
}
.yhyd-hub-toc__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.yhyd-hub-toc__links a {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #475569;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}
.yhyd-hub-toc__links a:hover {
  background: #ecfdf5;
  color: #047857;
  border-color: rgba(16, 185, 129, 0.35);
}

.yhyd-hub-section {
  padding: 2.75rem 0;
}
.yhyd-hub-section--alt {
  background: #f8fafc;
  border-top: 1px solid #f1f5f9;
  border-bottom: 1px solid #f1f5f9;
}
.yhyd-hub-head {
  text-align: center;
  margin-bottom: 2rem;
}
.yhyd-hub-head h2 {
  font-size: 1.375rem;
  font-weight: 700;
  color: #0f172a;
}
.yhyd-hub-head p {
  font-size: 0.9375rem;
  color: #64748b;
  margin: 0.5rem auto 0;
  max-width: 42rem;
  line-height: 1.6;
}
.yhyd-hub-head a {
  color: #047857;
  font-weight: 600;
  text-decoration: none;
}
.yhyd-hub-head a:hover { text-decoration: underline; }

.yhyd-role-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  max-width: 72rem;
  margin: 0 auto;
}
@media (max-width: 1023px) {
  .yhyd-role-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 639px) {
  .yhyd-role-grid { grid-template-columns: 1fr; }
}

.yhyd-hub-role-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 1rem;
  padding: 1.25rem;
  text-decoration: none;
  color: inherit;
  height: 100%;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}
.yhyd-hub-role-card:hover {
  border-color: rgba(16, 185, 129, 0.4);
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.12);
  transform: translateY(-2px);
}
.yhyd-hub-role-card--green { border-top: 3px solid #10b981; }
.yhyd-hub-role-card--teal { border-top: 3px solid #14b8a6; }
.yhyd-hub-role-card--blue { border-top: 3px solid #3b82f6; }
.yhyd-hub-role-card--amber { border-top: 3px solid #f59e0b; }
.yhyd-hub-role-card__emoji { font-size: 1.5rem; margin-bottom: 0.5rem; }
.yhyd-hub-role-card__title {
  font-size: 1rem;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 0.25rem;
}
.yhyd-hub-role-card__meta {
  font-size: 0.75rem;
  font-weight: 600;
  color: #047857;
  margin: 0 0 0.5rem;
}
.yhyd-hub-role-card__desc {
  font-size: 0.8125rem;
  color: #64748b;
  line-height: 1.5;
  flex: 1;
  margin: 0 0 0.75rem;
}
.yhyd-hub-role-card__cta {
  font-size: 0.8125rem;
  font-weight: 600;
  color: #047857;
  margin-top: auto;
}

.yhyd-pillar-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
@media (max-width: 1023px) {
  .yhyd-pillar-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 639px) {
  .yhyd-pillar-grid { grid-template-columns: 1fr; }
}
.yhyd-pillar {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 1rem;
  padding: 1.25rem;
  height: 100%;
}
.yhyd-pillar__head {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.85rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid #f1f5f9;
}
.yhyd-pillar__icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.65rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.yhyd-pillar__title {
  font-size: 1rem;
  font-weight: 700;
  color: #0f172a;
}
.yhyd-pillar__desc {
  font-size: 0.75rem;
  color: #64748b;
  margin-top: 0.15rem;
}
.yhyd-pillar__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.yhyd-pillar__links a {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8125rem;
  color: #334155;
  text-decoration: none;
  padding: 0.35rem 0.5rem;
  border-radius: 0.45rem;
  transition: background 0.15s, color 0.15s;
}
.yhyd-pillar__links a:hover {
  background: #ecfdf5;
  color: #047857;
}
.yhyd-pillar__links a i {
  color: #10b981;
  width: 1rem;
  text-align: center;
  font-size: 0.75rem;
}

.yhyd-journey-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
  max-width: 56rem;
  margin: 0 auto;
}
@media (max-width: 767px) {
  .yhyd-journey-steps { grid-template-columns: 1fr; }
}
.yhyd-journey-step {
  position: relative;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 0.85rem;
  padding: 1.1rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.yhyd-journey-step:hover {
  border-color: #10b981;
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.1);
}
.yhyd-journey-step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.65rem;
  height: 1.65rem;
  border-radius: 999px;
  background: #10b981;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.yhyd-journey-step__title {
  font-size: 0.875rem;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 0.25rem;
}
.yhyd-journey-step__desc {
  font-size: 0.75rem;
  color: #64748b;
  line-height: 1.45;
}

.yhyd-scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}
@media (max-width: 767px) {
  .yhyd-scenario-grid { grid-template-columns: 1fr; }
}
.yhyd-scenario {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 0.75rem;
  padding: 1rem;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: border-color 0.2s, transform 0.2s;
}
.yhyd-scenario:hover {
  border-color: #10b981;
  transform: translateY(-2px);
}
.yhyd-scenario__icon { font-size: 1.35rem; margin-bottom: 0.35rem; }
.yhyd-scenario__title {
  font-size: 0.875rem;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 0.25rem;
}
.yhyd-scenario__desc {
  font-size: 0.75rem;
  color: #64748b;
  line-height: 1.5;
}

.yhyd-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  max-width: 56rem;
  margin: 0 auto;
}
@media (max-width: 767px) {
  .yhyd-feature-grid { grid-template-columns: 1fr; }
}
.yhyd-feature {
  text-align: center;
  padding: 1.15rem;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 0.75rem;
}
.yhyd-feature i {
  font-size: 1.25rem;
  color: #10b981;
  margin-bottom: 0.5rem;
}
.yhyd-feature h3 {
  font-size: 0.875rem;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 0.25rem;
}
.yhyd-feature p {
  font-size: 0.75rem;
  color: #64748b;
  margin: 0;
}

.yhyd-convert-band {
  background: linear-gradient(135deg, #064e3b 0%, #047857 50%, #059669 100%);
  color: #fff;
  border: none;
}
.yhyd-convert-band .yhyd-hub-head h2,
.yhyd-convert-band .yhyd-hub-head p {
  color: rgba(255, 255, 255, 0.95);
}
.yhyd-convert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 220px), 1fr));
  gap: 0.85rem;
  max-width: 56rem;
  margin: 0 auto 1.25rem;
}
.yhyd-convert-card {
  display: block;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 0.85rem;
  padding: 1.1rem;
  text-decoration: none;
  color: #fff;
  transition: background 0.2s, transform 0.2s;
}
.yhyd-convert-card:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}
.yhyd-convert-card--primary {
  background: #fff;
  color: #065f46;
  border-color: #fff;
}
.yhyd-convert-card--primary:hover {
  background: #ecfdf5;
}
.yhyd-convert-card__icon { font-size: 1.25rem; margin-bottom: 0.4rem; }
.yhyd-convert-card__title {
  font-size: 0.9375rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}
.yhyd-convert-card__desc {
  font-size: 0.75rem;
  opacity: 0.9;
  line-height: 1.45;
}
.yhyd-convert-trust {
  text-align: center;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 36rem;
  margin: 0 auto;
}

.yhyd-hub-tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 240px), 1fr));
  gap: 0.85rem;
  max-width: 56rem;
  margin: 0 auto;
}
.yhyd-hub-tile {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 0.75rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.yhyd-hub-tile:hover {
  border-color: rgba(16, 185, 129, 0.45);
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.1);
}
.yhyd-hub-tile--featured {
  border-color: rgba(16, 185, 129, 0.35);
  background: linear-gradient(135deg, #ecfdf5 0%, #fff 100%);
}
.yhyd-hub-tile__icon {
  flex-shrink: 0;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.55rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
}
.yhyd-hub-tile__title {
  display: block;
  font-weight: 700;
  font-size: 0.875rem;
  color: #0f172a;
}
.yhyd-hub-tile__desc {
  display: block;
  font-size: 0.75rem;
  color: #64748b;
  margin-top: 0.15rem;
}

.yhyd-sticky-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 45;
  padding: 0.6rem 0.85rem calc(0.6rem + env(safe-area-inset-bottom, 0px));
  background: rgba(255, 255, 255, 0.96);
  border-top: 1px solid #e5e7eb;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-wrap: wrap;
}
@media (min-width: 768px) {
  .yhyd-sticky-cta { display: none; }
}
.yhyd-sticky-cta a {
  flex: 1;
  min-width: min(100%, 140px);
  max-width: 200px;
  text-align: center;
  padding: 0.55rem 0.75rem;
  border-radius: 0.55rem;
  font-size: 0.8125rem;
  font-weight: 600;
  text-decoration: none;
}
.yhyd-sticky-cta .btn-learn {
  background: #f1f5f9;
  color: #047857;
  border: 1px solid #e2e8f0;
}
.yhyd-sticky-cta .btn-coo {
  background: #10b981;
  color: #fff;
}

.yhyd-card { color: #374151; }
.yhyd-card .text-white { color: #111827 !important; }
.yhyd-card [class*="text-white/"] { color: #4b5563 !important; }

@media (max-width: 767px) {
  .yhyd-hub-toc { top: 55px; }
}

/* —— 子页 rail / hero / 学完转化条 —— */
.yhyd-page-rail {
  background: #fff;
  border-bottom: 1px solid #e5e7eb;
  padding: 0.65rem 0;
  overflow-x: auto;
}
.yhyd-page-rail__inner {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: nowrap;
}
.yhyd-page-rail__label {
  flex-shrink: 0;
  font-size: 0.6875rem;
  font-weight: 700;
  color: #64748b;
  letter-spacing: 0.04em;
}
.yhyd-page-rail__links {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.35rem;
}
.yhyd-page-rail__links a {
  flex-shrink: 0;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #475569;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  text-decoration: none;
  white-space: nowrap;
}
.yhyd-page-rail__links a:hover {
  background: #ecfdf5;
  color: #047857;
}
.yhyd-page-rail__links a.is-active {
  background: #10b981;
  color: #fff;
  border-color: #10b981;
}

.yhyd-page-hero {
  padding: 1.5rem 0 2rem;
  position: relative;
  overflow: hidden;
}
.yhyd-page-hero--brand {
  padding-top: 1.75rem;
  padding-bottom: 2.25rem;
}

.yhyd-learn-done {
  background: linear-gradient(135deg, #ecfdf5 0%, #f0fdf4 50%, #fff 100%);
  border-top: 1px solid #d1fae5;
  border-bottom: 1px solid #d1fae5;
  padding: 2rem 0;
}
.yhyd-learn-done__inner {
  max-width: 56rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  align-items: center;
  text-align: center;
}
@media (min-width: 768px) {
  .yhyd-learn-done__inner {
    flex-direction: row;
    text-align: left;
    justify-content: space-between;
  }
}
.yhyd-learn-done__text h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 0.35rem;
}
.yhyd-learn-done__text p {
  font-size: 0.8125rem;
  color: #64748b;
  margin: 0;
  line-height: 1.5;
}
.yhyd-learn-done__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}
.yhyd-learn-done__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.55rem 1rem;
  border-radius: 0.55rem;
  font-size: 0.8125rem;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
}
.yhyd-learn-done__btn--next {
  background: #10b981;
  color: #fff;
}
.yhyd-learn-done__btn--next:hover {
  background: #059669;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
}
.yhyd-learn-done__btn--map {
  background: #fff;
  color: #047857;
  border: 1px solid #a7f3d0;
}
.yhyd-learn-done__btn--coo {
  background: #065f46;
  color: #fff;
}
.yhyd-learn-done__btn--coo:hover {
  background: #064e3b;
}

.yhyd-resources-convert {
  background: linear-gradient(135deg, #064e3b 0%, #047857 100%);
  color: #fff;
  border-radius: 1rem;
  padding: 2rem 1.5rem;
  text-align: center;
  margin-bottom: 2rem;
}
.yhyd-resources-convert h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.yhyd-resources-convert p {
  font-size: 0.875rem;
  opacity: 0.9;
  margin-bottom: 1.25rem;
  max-width: 32rem;
  margin-left: auto;
  margin-right: auto;
}
.yhyd-resources-convert__grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}
.yhyd-resources-convert__grid a {
  padding: 0.6rem 1.1rem;
  border-radius: 0.55rem;
  font-size: 0.8125rem;
  font-weight: 600;
  text-decoration: none;
}
.yhyd-resources-convert__grid .primary {
  background: #fff;
  color: #065f46;
}
.yhyd-resources-convert__grid .secondary {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.3);
}