.teach-hero { padding: calc(var(--header-h) + 96px) 40px 80px; background: var(--parchment); text-align: center; position: relative; overflow: hidden; border-bottom: 0.5px solid var(--stone); }
.teach-hero-inner { max-width: 800px; margin: 0 auto; position: relative; z-index: 1; }
.teach-hero-wm { font-family: var(--font-display-zh); position: absolute; left: 50%; top: 52%; transform: translate(-50%,-50%); font-size: 520px; line-height: 1; color: var(--ink); opacity: 0.04; z-index: 0; pointer-events: none; user-select: none; }
.teach-eyebrow { display: inline-flex; align-items: center; gap: 16px; font-family: var(--font-ui-zh); font-size: 12px; letter-spacing: 0.18em; color: var(--stone); margin: 0 0 28px; }
.teach-eyebrow-zh { color: var(--gold); font-family: var(--font-ui-zh); }
.teach-eyebrow-rule { display: inline-block; width: 32px; height: 0.5px; background: var(--stone); flex-shrink: 0; }
.teach-eyebrow-en { font-family: var(--font-label); font-weight: 300; letter-spacing: 0.2em; font-size: 11px; color: var(--stone); }
.teach-hero-title { font-family: var(--font-display-zh); font-size: clamp(64px, 10vw, 112px); line-height: 1.1; letter-spacing: 0.1em; color: var(--ink); margin: 0 0 28px; }
.teach-hero-sub { font-family: var(--font-body-en); font-size: 19px; line-height: 1.7; color: var(--charcoal); margin: 0 0 32px; }
.teach-hero-sub em { color: var(--stone); font-size: 16px; }
.teach-hero-rule { display: block; width: 64px; height: 0.5px; background: var(--gold); margin: 0 auto 28px; }
.teach-hero-desc { font-family: var(--font-ui-zh); font-size: 13px; letter-spacing: 0.12em; color: var(--stone); line-height: 2; }
.teach-hero-desc-en { font-family: var(--font-label); font-weight: 300; font-size: 12px; letter-spacing: 0.1em; color: var(--stone); opacity: 0.75; display: block; margin-top: 6px; }
.teach-cats { background: var(--parchment); border-bottom: 0.5px solid var(--stone); position: sticky; top: var(--header-h); z-index: 90; }
.teach-cats-inner { display: flex; align-items: center; gap: 0; overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; padding: 0; }
.teach-cats-inner::-webkit-scrollbar { display: none; }
.teach-cat { font-family: var(--font-ui-zh); font-size: 13px; letter-spacing: 0.1em; color: var(--stone); padding: 16px 20px; white-space: nowrap; border-bottom: 2px solid transparent; transition: color 0.2s, border-color 0.2s; flex-shrink: 0; }
.teach-cat:hover { color: var(--ink); border-bottom-color: var(--stone); }
.teach-cat.is-active { color: var(--ink); border-bottom-color: var(--gold); }
.teach-featured { padding: 72px 40px 0; background: var(--parchment); }
.teach-feat-card { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-top: 0.5px solid var(--stone); border-bottom: 0.5px solid var(--stone); }
.teach-feat-img-wrap { display: block; overflow: hidden; }
.teach-feat-img { width: 100%; height: 100%; min-height: 460px; object-fit: cover; display: block; }
.teach-feat-body { padding: 56px 48px; display: flex; flex-direction: column; justify-content: center; border-left: 0.5px solid var(--stone); }
.teach-feat-cat { font-family: var(--font-ui-zh); font-size: 12px; letter-spacing: 0.18em; color: var(--gold); margin: 0 0 20px; }
.teach-feat-cat a { color: inherit; }
.teach-feat-cat a:hover { color: var(--gold-deep); }
.teach-feat-cat-en { color: var(--stone); font-family: var(--font-label); font-size: 11px; }
.teach-feat-title { font-family: var(--font-display-zh); font-size: clamp(24px, 2.5vw, 32px); line-height: 1.5; color: var(--ink); margin: 0 0 12px; }
.teach-feat-title a { color: inherit; }
.teach-feat-title a:hover { color: var(--gold-deep); }
.teach-feat-title-en { font-family: var(--font-body-en); font-style: italic; font-size: 15px; color: var(--stone); margin: 0 0 24px; line-height: 1.6; }
.teach-feat-excerpt { font-family: var(--font-body-zh); font-size: 16px; line-height: 1.9; color: var(--charcoal); margin: 0 0 28px; display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.teach-feat-meta { display: flex; align-items: center; gap: 10px; font-family: var(--font-label); font-size: 12px; letter-spacing: 0.08em; color: var(--stone); margin-bottom: 28px; }
.teach-meta-sep { opacity: 0.5; }
.teach-read-more { font-family: var(--font-label); font-size: 12px; letter-spacing: 0.15em; color: var(--ink); border-bottom: 0.5px solid var(--gold); padding-bottom: 4px; display: inline-flex; align-items: center; gap: 6px; transition: color 0.2s, border-color 0.2s; width: fit-content; }
.teach-read-more:hover { color: var(--gold-deep); border-color: var(--gold-deep); }
.teach-grid-section { padding: 72px 40px 80px; background: var(--parchment); }
.teach-grid-header { display: flex; align-items: center; gap: 24px; margin-bottom: 48px; }
.teach-grid-label { font-family: var(--font-ui-zh); font-size: 12px; letter-spacing: 0.2em; color: var(--stone); white-space: nowrap; }
.teach-grid-rule { flex: 1; height: 0.5px; background: var(--stone); opacity: 0.4; }
.teach-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 0.5px solid var(--stone); border-left: 0.5px solid var(--stone); }
.teach-card { border-right: 0.5px solid var(--stone); border-bottom: 0.5px solid var(--stone); display: flex; flex-direction: column; }
.teach-card-img-wrap { display: block; overflow: hidden; }
.teach-card-img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; display: block; transition: opacity 0.3s; }
.teach-card-img--event { border-bottom: 2px solid var(--gold); }
.teach-card-img-wrap:hover .teach-card-img { opacity: 0.85; }
.teach-card-body { padding: 28px 28px 32px; display: flex; flex-direction: column; flex: 1; }
.teach-card-cat { font-family: var(--font-ui-zh); font-size: 11px; letter-spacing: 0.18em; color: var(--gold); margin: 0 0 14px; }
.teach-card-cat a { color: inherit; }
.teach-card-cat a:hover { color: var(--gold-deep); }
.teach-card-cat--event a { color: var(--gold-deep); }
.teach-card-title { font-family: var(--font-display-zh); font-size: 19px; line-height: 1.55; color: var(--ink); margin: 0 0 8px; }
.teach-card-title a { color: inherit; }
.teach-card-title a:hover { color: var(--gold-deep); }
.teach-card-title-en { font-family: var(--font-body-en); font-style: italic; font-size: 13px; color: var(--stone); line-height: 1.55; margin: 0 0 16px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.teach-card-excerpt { font-family: var(--font-body-zh); font-size: 15px; line-height: 1.85; color: var(--charcoal); margin: 0 0 20px; flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.teach-card-meta { display: flex; align-items: center; gap: 8px; font-family: var(--font-label); font-size: 11px; letter-spacing: 0.06em; color: var(--stone); margin-bottom: 16px; }
.teach-card-link { font-family: var(--font-label); font-size: 11px; letter-spacing: 0.15em; color: var(--stone); display: inline-flex; align-items: center; gap: 5px; transition: color 0.2s; }
.teach-card-link:hover { color: var(--ink); }
.teach-pagination { display: flex; align-items: center; justify-content: center; gap: 4px; margin-top: 56px; padding-top: 40px; border-top: 0.5px solid var(--stone); }
.teach-page { font-family: var(--font-label); font-size: 13px; letter-spacing: 0.1em; color: var(--stone); width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center; border: 0.5px solid transparent; transition: border-color 0.2s, color 0.2s; }
.teach-page:hover { border-color: var(--stone); color: var(--ink); }
.teach-page--current { color: var(--ink); border-color: var(--gold); cursor: default; }
.teach-page--ellipsis { cursor: default; }
.teach-next-page { font-family: var(--font-label); font-size: 12px; letter-spacing: 0.12em; color: var(--ink); display: inline-flex; align-items: center; gap: 6px; margin-left: 12px; border-bottom: 0.5px solid var(--stone); padding-bottom: 2px; transition: border-color 0.2s; }
.teach-next-page:hover { border-color: var(--gold); }
.teach-pagination--top { margin-top: 0; padding-top: 20px; padding-bottom: 20px; border-top: none; border-bottom: 0.5px solid var(--stone); margin-bottom: 0; }
.teach-series { background: var(--sanctuary); padding: 80px 40px; }
.teach-series-inner { max-width: var(--max-width); margin: 0 auto; }
.teach-series-head { text-align: center; margin-bottom: 64px; }
.teach-series-eyebrow { font-family: var(--font-ui-zh); font-size: 12px; letter-spacing: 0.2em; color: var(--gold); margin: 0 0 20px; }
.teach-series-title { font-family: var(--font-display-zh); font-size: clamp(32px, 4vw, 48px); color: var(--moonstone); margin: 0 0 16px; line-height: 1.3; }
.teach-series-sub { font-family: var(--font-body-zh); font-size: 16px; color: var(--stone); line-height: 1.85; margin: 0; max-width: 560px; margin-left: auto; margin-right: auto; }
.teach-series-rule { display: block; width: 48px; height: 0.5px; background: var(--gold); margin: 32px auto 0; }
.teach-series-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 0.5px solid rgba(200,169,110,0.3); border-left: 0.5px solid rgba(200,169,110,0.3); }
.teach-series-item { padding: 40px 32px; border-right: 0.5px solid rgba(200,169,110,0.3); border-bottom: 0.5px solid rgba(200,169,110,0.3); transition: background 0.2s; display: block; }
.teach-series-item:hover { background: rgba(200,169,110,0.05); }
.tsi-num { font-family: var(--font-label); font-size: 11px; letter-spacing: 0.2em; color: var(--gold); opacity: 0.6; margin: 0 0 20px; }
.tsi-title { font-family: var(--font-display-zh); font-size: 20px; color: var(--moonstone); margin: 0 0 8px; line-height: 1.45; }
.tsi-sub { font-family: var(--font-body-en); font-style: italic; font-size: 13px; color: var(--stone); margin: 0 0 20px; }
.tsi-count { font-family: var(--font-label); font-size: 11px; letter-spacing: 0.12em; color: var(--gold); opacity: 0.7; margin: 0; border-bottom: 0.5px solid rgba(200,169,110,0.4); padding-bottom: 4px; display: inline-block; }
.teach-optin { background: var(--vellum); padding: 80px 40px; border-top: 0.5px solid var(--stone); border-bottom: 0.5px solid var(--stone); }
.teach-optin-inner { max-width: 640px; margin: 0 auto; text-align: center; }
.teach-optin-rule { display: block; width: 48px; height: 0.5px; background: var(--gold); margin: 0 auto 32px; }
.teach-optin-title { font-family: var(--font-display-zh); font-size: clamp(28px, 4vw, 40px); color: var(--ink); margin: 0 0 20px; }
.teach-optin-sub { font-family: var(--font-body-zh); font-size: 16px; line-height: 1.9; color: var(--charcoal); margin: 0 0 40px; }
.teach-optin-sub em { color: var(--stone); font-size: 14px; }
.teach-optin-fields { display: grid; grid-template-columns: 1fr 1.5fr auto; gap: 0; border: 0.5px solid var(--stone); }
.teach-optin-fields input { padding: 14px 18px; font-family: var(--font-body-zh); font-size: 15px; background: var(--parchment); border: none; border-right: 0.5px solid var(--stone); color: var(--ink); outline: none; min-width: 0; }
.teach-optin-fields input::placeholder { color: var(--stone); }
.teach-optin-fields input:focus { background: var(--parchment); outline: 2px solid var(--gold); outline-offset: -2px; }
.teach-optin-btn { padding: 14px 24px; font-family: var(--font-ui-zh); font-size: 13px; letter-spacing: 0.14em; background: var(--ink); color: var(--moonstone); border: none; cursor: pointer; transition: background 0.2s; white-space: nowrap; }
.teach-optin-btn:hover { background: var(--charcoal); }
.teach-optin-note { font-family: var(--font-label); font-size: 11px; color: var(--stone); margin: 16px 0 0; letter-spacing: 0.06em; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@media (max-width: 1024px) {
  .teach-series-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .teach-feat-card { grid-template-columns: 1fr; }
  .teach-feat-img { min-height: 280px; }
  .teach-feat-body { border-left: none; border-top: 0.5px solid var(--stone); padding: 36px 28px; }
  .teach-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .teach-hero { padding: calc(var(--header-h) + 64px) 24px 56px; }
  .teach-hero-wm { font-size: 260px; }
  .teach-featured { padding: 48px 24px 0; }
  .teach-grid-section { padding: 48px 24px 56px; }
  .teach-series { padding: 56px 24px; }
  .teach-optin { padding: 56px 24px; }
  .teach-grid { grid-template-columns: 1fr; }
  .teach-series-grid { grid-template-columns: 1fr; }
  .teach-optin-fields { grid-template-columns: 1fr; }
  .teach-optin-fields input { border-right: none; border-bottom: 0.5px solid var(--stone); }
  .teach-optin-btn { width: 100%; padding: 16px; }
  .teach-cat { padding: 14px 16px; font-size: 12px; }
}