.newsletter-section { padding-top: 156px; background: var(--cream); }
.newsletter-intro { display: grid; grid-template-columns: 1fr .7fr; align-items: end; gap: 6%; margin-bottom: 54px; }
.newsletter-intro .eyebrow { grid-column: 1 / -1; margin-bottom: 0; }
.newsletter-intro h2 { max-width: 650px; font-size: clamp(2.8rem, 5vw, 5rem); }
.newsletter-intro > p:last-child { max-width: 440px; margin: 0 0 8px; color: var(--muted); }

.newsletter-layout { display: grid; grid-template-areas: "viewer sidebar"; grid-template-columns: minmax(0, 1fr) 320px; gap: 28px; align-items: start; }
.newsletter-viewer { grid-area: viewer; min-width: 0; overflow: hidden; background: var(--white); box-shadow: var(--shadow); }
.newsletter-viewer-header { display: flex; align-items: center; justify-content: space-between; gap: 28px; min-height: 132px; padding: 25px 30px; color: white; background: var(--brown-deep); }
.newsletter-viewer-header > div:first-child { min-width: 0; }
.newsletter-viewer-header span { display: block; margin-bottom: 5px; color: var(--gold-light); font-size: .7rem; font-weight: 700; letter-spacing: .15em; text-transform: uppercase; }
.newsletter-viewer-header h3 { margin: 0; overflow-wrap: anywhere; font: 1.7rem/1.15 "Playfair Display", Georgia, serif; }
.newsletter-viewer-header p { margin: 5px 0 0; color: rgba(255,255,255,.62); font-size: .83rem; }
.newsletter-actions { display: flex; flex: 0 0 auto; align-items: center; gap: 18px; }
.newsletter-actions .button { min-height: 44px; padding: 9px 15px; font-size: .78rem; }
.newsletter-download { color: var(--gold-light); border-bottom: 1px solid currentColor; font-size: .78rem; font-weight: 700; }
.newsletter-frame-wrap { height: clamp(650px, 76vh, 920px); background: #dedbd6; }
.newsletter-frame-wrap iframe { display: block; width: 100%; height: 100%; border: 0; background: white; }

.newsletter-sidebar { position: sticky; grid-area: sidebar; top: 108px; overflow: hidden; border: 1px solid var(--line); background: var(--white); }
.newsletter-sidebar-heading { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 23px 24px; color: white; background: var(--brown); }
.newsletter-sidebar-heading > span { color: var(--gold-light); font-size: .7rem; font-weight: 700; letter-spacing: .15em; text-transform: uppercase; }
.newsletter-sidebar-heading strong { font-size: .78rem; }
.newsletter-list { max-height: min(690px, calc(100vh - 220px)); overflow-y: auto; }
.newsletter-option { display: grid; grid-template-columns: 30px minmax(0, 1fr) 18px; gap: 12px; align-items: center; padding: 20px 18px; border-bottom: 1px solid var(--line); transition: color .2s, background .2s; }
.newsletter-option:last-child { border-bottom: 0; }
.newsletter-option:hover { background: var(--cream); }
.newsletter-option.active { color: white; background: var(--brown-light); }
.newsletter-number { align-self: start; color: var(--gold); font: .82rem "Playfair Display", Georgia, serif; }
.newsletter-option strong { display: block; overflow-wrap: anywhere; font: 1.02rem/1.25 "Playfair Display", Georgia, serif; }
.newsletter-option small { display: block; margin-top: 5px; color: var(--muted); font-size: .72rem; }
.newsletter-option.active small { color: rgba(255,255,255,.65); }
.newsletter-arrow { color: var(--brown-light); transition: transform .2s; }
.newsletter-option:hover .newsletter-arrow { transform: translateX(3px); }
.newsletter-option.active .newsletter-arrow { color: var(--gold-light); }
.newsletter-sidebar-empty { margin: 0; padding: 28px 24px; color: var(--muted); font-size: .88rem; }

.newsletter-empty { display: grid; min-height: 560px; place-content: center; padding: 48px; text-align: center; }
.newsletter-empty > span { margin-bottom: 22px; color: var(--gold); font-size: 2.2rem; }
.newsletter-empty h3 { max-width: 520px; margin: 0 auto 16px; color: var(--brown); font: clamp(2rem, 4vw, 3.5rem)/1.05 "Playfair Display", Georgia, serif; }
.newsletter-empty p { max-width: 470px; margin: 0 auto; color: var(--muted); }

@media (max-width: 900px) {
  .newsletter-layout { grid-template-columns: minmax(0, 1fr) 280px; gap: 20px; }
  .newsletter-viewer-header { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 760px) {
  .newsletter-section { padding-top: 118px; }
  .newsletter-intro { grid-template-columns: 1fr; gap: 24px; margin-bottom: 38px; }
  .newsletter-intro .eyebrow { grid-column: auto; }
  .newsletter-intro > p:last-child { margin: 0; }
  .newsletter-layout { grid-template-areas: "sidebar" "viewer"; grid-template-columns: 1fr; }
  .newsletter-sidebar { position: static; }
  .newsletter-list { display: flex; max-height: none; overflow-x: auto; scroll-snap-type: x proximity; }
  .newsletter-option { flex: 0 0 min(82vw, 310px); scroll-snap-align: start; border-right: 1px solid var(--line); border-bottom: 0; }
  .newsletter-viewer-header { padding: 24px; }
  .newsletter-actions { width: 100%; flex-wrap: wrap; }
  .newsletter-frame-wrap { height: 72vh; min-height: 520px; }
  .newsletter-empty { min-height: 430px; padding: 36px 24px; }
}

@media (max-width: 430px) {
  .newsletter-actions { align-items: flex-start; flex-direction: column; }
  .newsletter-actions .button { width: 100%; }
  .newsletter-frame-wrap { height: 68vh; min-height: 460px; }
}