/* ============================================================
   PACKING SYSTEMS — Layer 2 sub-hub
   Reuses tokens from styles.css and pack.css.
   ============================================================ */

/* ========= Hero ========= */
.systems-hero {
  position: relative;
  min-height: 820px;
  padding: 180px 0 80px;
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}
.sys-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: saturate(0.78) contrast(1.05);
  animation: kenburns 28s ease-in-out infinite alternate;
  z-index: -2;
}
.sys-hero-scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(31,27,22,0.55) 0%, rgba(31,27,22,0.3) 40%, rgba(31,27,22,0.85) 100%),
    linear-gradient(90deg, rgba(31,27,22,0.6) 0%, rgba(31,27,22,0.1) 60%);
  z-index: -1;
}
.systems-hero::before {
  content: "";
  position: absolute;
  top: 140px; right: -120px;
  width: 480px; height: 480px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 50%;
  pointer-events: none;
}
.sys-hero-coord,
.sys-hero-credit {
  position: absolute;
  bottom: 28px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: rgba(255,255,255,0.7);
  text-transform: uppercase;
  z-index: 2;
}
.sys-hero-coord { left: 48px; display: flex; align-items: center; gap: 10px; }
.sys-hero-coord::before { content: ""; width: 28px; height: 1px; background: var(--pack-rust, #B85C2D); }
.sys-hero-credit { right: 48px; }

.sys-crumbs {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: rgba(255,255,255,0.8);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 40px;
}
.sys-crumbs a { color: rgba(255,255,255,0.8); transition: color 0.2s; }
.sys-crumbs a:hover { color: var(--pack-rust, #B85C2D); }
.sys-crumbs .sep { opacity: 0.4; }
.sys-crumbs .here { color: var(--pack-rust, #B85C2D); }

.sys-mast {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 80px;
  align-items: end;
}
.sys-mast h1 {
  font-family: var(--serif);
  font-size: clamp(96px, 13vw, 200px);
  font-weight: 400;
  line-height: 0.92;
  letter-spacing: -0.035em;
  color: #fff;
  text-shadow: 0 4px 40px rgba(0,0,0,0.35);
}
.sys-mast h1 em {
  font-style: italic;
  color: var(--pack-rust, #B85C2D);
  display: block;
  font-size: 0.4em;
  margin-top: 14px;
  letter-spacing: -0.01em;
}
.sys-kicker-row {
  display: flex;
  gap: 16px;
  margin-bottom: 22px;
}
.sys-layer-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--pack-rust, #B85C2D);
  padding: 6px 12px;
  border: 1px solid var(--pack-rust, #B85C2D);
  border-radius: 999px;
}
.sys-lede {
  font-size: 18px;
  line-height: 1.6;
  color: rgba(255,255,255,0.9);
  max-width: 480px;
  padding-bottom: 16px;
  text-shadow: 0 1px 20px rgba(0,0,0,0.35);
}
.sys-lede em { color: var(--pack-rust, #B85C2D); font-style: italic; }

/* Rail across bottom of hero */
.sys-rail {
  margin-top: 72px;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.18);
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  gap: 0;
}
.sys-rail a {
  padding: 0 12px;
  border-right: 1px solid rgba(255,255,255,0.12);
  transition: all 0.2s;
}
.sys-rail a:last-child { border-right: none; }
.sys-rail a:first-child { padding-left: 0; }
.sys-rail a:hover { background: rgba(255,255,255,0.04); }
.sys-rail .n {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--pack-rust, #B85C2D);
  display: block;
  margin-bottom: 6px;
}
.sys-rail .t {
  font-family: var(--serif);
  font-style: italic;
  font-size: 15px;
  color: rgba(255,255,255,0.88);
  line-height: 1.2;
}

/* ========= Section head (scoped to systems) ========= */
.sys-section-head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 28px;
  align-items: end;
  margin-bottom: 48px;
}
.sys-section-head .num {
  font-family: var(--serif);
  font-style: italic;
  font-size: 80px;
  color: var(--pack-rust, #B85C2D);
  line-height: 0.85;
  opacity: 0.5;
}
.sys-section-head .titles h2 {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--pack-charcoal, #1F1B16);
  line-height: 1;
}
.sys-section-head .titles h2 em { font-style: italic; color: var(--pack-rust, #B85C2D); }
.sys-section-head .titles p {
  font-size: 14px;
  color: var(--ink-mute);
  margin-top: 12px;
  max-width: 520px;
  line-height: 1.55;
}
.sys-section-head .right {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--pack-rust, #B85C2D);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 8px;
}

/* ========= Card grid ========= */
.systems-grid-section { background: var(--pack-canvas, #f4ece0); padding: 120px 0 80px; }

.sys-card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto;
  gap: 16px;
}
/* size variants */
.sys-card.xl { grid-column: span 2; grid-row: span 2; }
.sys-card.wide { grid-column: span 2; }
.sys-card.lg { grid-column: span 2; }
.sys-card.md { grid-column: span 1; }
.sys-card.sm { grid-column: span 1; }

.sys-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: 3px;
  overflow: hidden;
  background: var(--pack-charcoal, #1F1B16);
  cursor: pointer;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
  text-decoration: none;
  min-height: 260px;
}
.sys-card:hover { transform: translateY(-3px); box-shadow: 0 18px 56px rgba(0,0,0,0.22); }
.sys-card.xl { min-height: 520px; }
.sys-card.wide, .sys-card.lg { min-height: 280px; }

.sys-card .img {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.6s ease;
}
.sys-card:hover .img { transform: scale(1.04); }

.sys-card .scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(31,27,22,0.2) 0%, rgba(31,27,22,0.88) 100%);
}
.sys-card .corner-num {
  position: absolute;
  top: 18px; left: 18px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.7);
  z-index: 2;
}
.sys-card .corner-tag {
  position: absolute;
  top: 18px; right: 18px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.18em;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(184,92,45,0.85);
  color: #fff;
  text-transform: uppercase;
  z-index: 2;
}
.sys-card .corner-tag.zoe-badge {
  background: rgba(180,140,30,0.9);
  color: #fff;
}
.sys-card .body {
  position: relative;
  z-index: 2;
  margin-top: auto;
  padding: 22px 22px 18px;
  color: #fff;
}
.sys-card .topic {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--pack-rust, #B85C2D);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sys-card .dot {
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--pack-rust, #B85C2D);
  flex-shrink: 0;
}
.sys-card h3 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: #fff;
  margin-bottom: 8px;
}
.sys-card.xl h3 { font-size: 40px; }
.sys-card h3 em { font-style: italic; color: var(--pack-rust-soft, #d8855b); }
.sys-card .desc {
  font-size: 13px;
  line-height: 1.55;
  color: rgba(255,255,255,0.8);
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.sys-card.xl .desc { -webkit-line-clamp: 5; font-size: 14.5px; }
.sys-card .meta {
  display: flex;
  gap: 8px;
  align-items: center;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.6);
}
.sys-card .meta .arrow { margin-left: auto; opacity: 0.7; }

/* ========= Essay section ========= */
.systems-essay { background: var(--cream-warm, #ebe3d5); padding: 120px 0; }
.sys-essay-spread {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.sys-pull {
  font-family: var(--serif);
  font-size: 42px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--pack-charcoal, #1F1B16);
  font-style: italic;
}
.sys-byline {
  margin-top: 28px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 28px;
  border-top: 1px solid var(--pack-line, rgba(31,27,22,0.12));
}
.sys-byline .av {
  width: 48px; height: 48px;
  border-radius: 50%;
  background-size: cover; background-position: center;
  flex-shrink: 0;
}
.sys-byline .who .name {
  font-family: var(--serif);
  font-style: italic;
  font-size: 18px;
  color: var(--pack-charcoal, #1F1B16);
}
.sys-byline .who .role {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-top: 2px;
}
.sys-essay-rhs {
  columns: 2;
  column-gap: 32px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-mute);
}
.sys-essay-rhs p { margin-bottom: 16px; break-inside: avoid; }
.sys-essay-rhs p:first-child::first-letter {
  font-family: var(--serif);
  font-size: 56px;
  float: left;
  line-height: 0.9;
  color: var(--pack-rust, #B85C2D);
  margin-right: 8px;
  margin-top: 6px;
  font-weight: 400;
}
.sys-essay-stats {
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--pack-line, rgba(31,27,22,0.12));
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.sys-essay-stats .item .n {
  font-family: var(--serif);
  font-style: italic;
  font-size: 48px;
  color: var(--pack-rust, #B85C2D);
  line-height: 1;
}
.sys-essay-stats .item .l {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-top: 10px;
  line-height: 1.4;
}

/* ========= Decision section ========= */
.systems-decide { background: var(--pack-canvas, #f4ece0); padding: 120px 0; }
.sys-decide-shell {
  background: #fff;
  border: 1px solid var(--pack-line, rgba(31,27,22,0.12));
  border-radius: 4px;
  padding: 48px 56px 40px;
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 56px;
  align-items: start;
}
.sys-decide-lhs .lbl {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--pack-rust, #B85C2D);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.sys-decide-lhs h3 {
  font-family: var(--serif);
  font-size: 44px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--pack-charcoal, #1F1B16);
  margin-bottom: 20px;
}
.sys-decide-lhs h3 em { font-style: italic; color: var(--pack-rust, #B85C2D); }
.sys-decide-lhs p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-mute);
  max-width: 360px;
}
.sys-result {
  margin-top: 32px;
  padding: 22px 24px;
  background: var(--pack-canvas, #f4ece0);
  border: 1px solid var(--pack-line, rgba(31,27,22,0.12));
  border-radius: 4px;
}
.sys-result .r-lbl {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--pack-rust, #B85C2D);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.sys-result .r-type {
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 400;
  line-height: 1;
  color: var(--pack-charcoal, #1F1B16);
  letter-spacing: -0.01em;
}
.sys-result .r-blurb {
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-mute);
  margin-top: 10px;
}
.sys-q-block { padding: 22px 0; border-bottom: 1px solid var(--pack-line, rgba(31,27,22,0.12)); }
.sys-q-block:last-child { border-bottom: none; }
.sys-q-block .q-num {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--pack-rust, #B85C2D);
  margin-bottom: 10px;
}
.sys-q-block .q-label {
  font-family: var(--serif);
  font-size: 22px;
  color: var(--pack-charcoal, #1F1B16);
  margin-bottom: 18px;
  letter-spacing: -0.005em;
}
.sys-q-block .q-opts { display: flex; gap: 10px; flex-wrap: wrap; }
.sys-q-opt {
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid var(--pack-line, rgba(31,27,22,0.12));
  background: transparent;
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink-mute);
  cursor: pointer;
  transition: all 0.2s;
}
.sys-q-opt:hover { border-color: var(--pack-rust, #B85C2D); color: var(--pack-charcoal, #1F1B16); }
.sys-q-opt.sel { background: var(--pack-charcoal, #1F1B16); color: var(--pack-canvas, #f4ece0); border-color: var(--pack-charcoal, #1F1B16); }

/* ========= Reading list ========= */
.systems-reading { background: var(--cream-warm, #ebe3d5); padding: 120px 0; }
.sys-reading-row {
  display: grid;
  grid-template-columns: 40px 1fr auto auto;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--pack-line, rgba(31,27,22,0.12));
  align-items: center;
  cursor: pointer;
  transition: all 0.3s;
  text-decoration: none;
}
.sys-reading-row:first-of-type { border-top: 1px solid var(--pack-line, rgba(31,27,22,0.12)); }
.sys-reading-row:hover { padding-left: 12px; }
.sys-reading-row:hover .title { color: var(--pack-rust, #B85C2D); }
.sys-reading-row .num {
  font-family: var(--serif);
  font-style: italic;
  font-size: 28px;
  color: var(--pack-rust, #B85C2D);
  opacity: 0.6;
}
.sys-reading-row .title {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 400;
  color: var(--pack-charcoal, #1F1B16);
  line-height: 1.2;
  transition: color 0.3s;
  letter-spacing: -0.005em;
}
.sys-reading-row .title em { font-style: italic; color: var(--pack-rust, #B85C2D); }
.sys-reading-row .tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--ink-mute);
  text-transform: uppercase;
}
.sys-reading-row .duration {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--pack-rust, #B85C2D);
}

/* ========= FAQ ========= */
.systems-faq { background: var(--pack-canvas, #f4ece0); padding: 120px 0; }
.sys-faq-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 64px; align-items: start; }
.sys-faq-grid .faq-lhs .lbl {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--pack-rust, #B85C2D);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.sys-faq-grid .faq-lhs h3 {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--pack-charcoal, #1F1B16);
}
.sys-faq-grid .faq-lhs h3 em { font-style: italic; color: var(--pack-rust, #B85C2D); display: block; }
.sys-faq-grid .faq-lhs p {
  margin-top: 24px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink-mute);
  max-width: 380px;
}
.sys-faq-item {
  border-bottom: 1px solid var(--pack-line, rgba(31,27,22,0.12));
  cursor: pointer;
}
.sys-faq-item:first-child { border-top: 1px solid var(--pack-line, rgba(31,27,22,0.12)); }
.sys-faq-item .q {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  padding: 22px 0;
  font-family: var(--serif);
  font-size: 22px;
  color: var(--pack-charcoal, #1F1B16);
  letter-spacing: -0.005em;
  line-height: 1.25;
}
.sys-faq-item .q .toggle {
  font-family: var(--mono);
  font-size: 18px;
  color: var(--pack-rust, #B85C2D);
  flex-shrink: 0;
  margin-top: 2px;
  transition: transform 0.25s;
}
.sys-faq-item.open .q .toggle { transform: rotate(45deg); }
.sys-faq-item .a {
  max-height: 0;
  overflow: hidden;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-mute);
  transition: max-height 0.35s ease, padding 0.25s;
  padding: 0;
}
.sys-faq-item.open .a { max-height: 400px; padding-bottom: 22px; }

/* ========= CTA ========= */
.systems-cta {
  position: relative;
  height: 520px;
  overflow: hidden;
  color: #fff;
}
.systems-cta .cta-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  animation: kenburns 25s ease-in-out infinite alternate;
}
.systems-cta .cta-bg::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(31,27,22,0.5) 0%, rgba(31,27,22,0.85) 100%);
}
.sys-cta-inner {
  position: relative; z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 48px;
  max-width: 1280px;
  margin: 0 auto;
}
.sys-cta-inner .kicker {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--pack-rust, #B85C2D);
  text-transform: uppercase;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.sys-cta-inner .kicker::before { content: ""; width: 28px; height: 1px; background: var(--pack-rust, #B85C2D); }
.sys-cta-inner h2 {
  font-family: var(--serif);
  font-size: clamp(56px, 7vw, 96px);
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: -0.025em;
  text-shadow: 0 2px 30px rgba(0,0,0,0.35);
}
.sys-cta-inner h2 em { font-style: italic; color: var(--pack-rust, #B85C2D); display: block; }
.sys-cta-inner p {
  margin-top: 22px;
  font-size: 16px;
  line-height: 1.6;
  opacity: 0.9;
  max-width: 520px;
}
.cta-actions { margin-top: 36px; display: flex; gap: 16px; align-items: center; }
.cta-btn-p {
  background: var(--pack-rust, #B85C2D);
  color: #fff;
  padding: 16px 32px;
  border-radius: 999px;
  font-family: var(--sans);
  font-weight: 500;
  font-size: 14px;
  text-decoration: none;
  transition: background 0.2s;
}
.cta-btn-p:hover { background: var(--pack-rust-soft, #d8855b); }
.cta-btn-g {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #fff;
  text-decoration: none;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.3);
}

/* ========= Responsive ========= */
@media (max-width: 1100px) {
  .sys-rail { grid-template-columns: repeat(5, 1fr); }
  .sys-card-grid { grid-template-columns: repeat(2, 1fr); }
  .sys-card.xl { grid-column: span 2; }
  .sys-card.wide, .sys-card.lg { grid-column: span 2; }
  .sys-essay-stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  .sys-mast { grid-template-columns: 1fr; gap: 32px; }
  .sys-rail { grid-template-columns: repeat(3, 1fr); }
  .sys-card-grid { grid-template-columns: 1fr; }
  .sys-card.xl, .sys-card.wide, .sys-card.lg, .sys-card.md, .sys-card.sm { grid-column: span 1; }
  .sys-essay-spread { grid-template-columns: 1fr; gap: 32px; }
  .sys-essay-rhs { columns: 1; }
  .sys-essay-stats { grid-template-columns: 1fr 1fr; gap: 24px; }
  .sys-faq-grid, .sys-decide-shell { grid-template-columns: 1fr; gap: 32px; }
  .sys-decide-shell { padding: 32px; }
  .sys-section-head { grid-template-columns: auto 1fr; }
  .sys-section-head .right { display: none; }
}