.feat-hero {
  position: relative; overflow: hidden;
  padding: 80px 0 72px;
  background:
    radial-gradient(900px 480px at 10% 30%, rgba(37, 99, 172, 0.06), transparent 60%),
    radial-gradient(900px 480px at 90% 90%, rgba(139, 35, 49, 0.04), transparent 60%),
    linear-gradient(180deg, #FBFCFD 0%, #FFFFFF 80%);
  border-bottom: 1px solid var(--border-subtle);
}
.feat-hero-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: center;
}
.feat-breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: var(--text-sm); color: var(--fg-muted);
  margin-bottom: 20px;
}
.feat-breadcrumb a { color: var(--fg-muted); }
.feat-breadcrumb a:hover { color: var(--brand-500); }
.feat-breadcrumb .icon { width: 14px; height: 14px; color: var(--gray-300); }
.feat-hero h1 {
  font-size: 48px; line-height: 1.15;
  letter-spacing: var(--tracking-cn-display);
  color: var(--brand-900); margin: 0 0 18px;
  font-weight: 700;
}
.feat-hero h1 em {
  font-style: normal; color: var(--accent-500);
}
.feat-hero p.lead {
  font-size: var(--text-xl); line-height: 1.6;
  color: var(--gray-600); margin: 0 0 28px;
}
.feat-hero .actions { display: flex; gap: 12px; margin-bottom: 28px; }
.feat-hero .quick-stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border-subtle);
  padding-top: 20px;
}
.feat-hero .quick-stat-label { font-size: 11px; color: var(--fg-subtle); letter-spacing: 0.04em; }
.feat-hero .quick-stat-val { font-size: var(--text-xl); font-weight: 600; color: var(--brand-900); font-variant-numeric: tabular-nums; margin-top: 4px; }

/* ====================================================================
   HERO STAMP / DOCUMENT VISUAL
   ==================================================================== */
.hero-doc-stack {
  position: relative;
  height: 520px;
}
.hero-doc {
  position: absolute;
  background: var(--gray-0);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 24px;
  transform-origin: center;
}
.hero-doc-back-2 {
  top: 36px; left: 24px; right: 64px; bottom: 64px;
  transform: rotate(-2deg);
  opacity: 0.6;
  background: var(--gray-50);
}
.hero-doc-back-1 {
  top: 18px; left: 12px; right: 80px; bottom: 80px;
  transform: rotate(2deg);
  opacity: 0.85;
  background: var(--gray-25);
}
.hero-doc-main {
  top: 0; left: 60px; right: 0; bottom: 60px;
  box-shadow: var(--shadow-xl);
}
.hero-doc-head {
  display: flex; justify-content: space-between; align-items: flex-start;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 16px;
}
.hero-doc-id {
  font-family: var(--font-mono); font-size: var(--text-md);
  color: var(--brand-500); font-weight: 600;
}
.hero-doc-meta { font-size: 11px; color: var(--fg-muted); margin-top: 4px; font-family: var(--font-mono); }
.hero-doc-status {
  background: var(--success-50); color: var(--success-700);
  font-size: 12px; font-weight: 600;
  padding: 4px 12px; border-radius: var(--radius-pill);
  display: inline-flex; align-items: center; gap: 4px;
}
.hero-doc-status .icon { width: 14px; height: 14px; }

.hero-doc-row {
  display: grid; grid-template-columns: 1fr 60px 80px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--border-subtle);
  font-size: var(--text-sm);
  color: var(--gray-700);
  font-variant-numeric: tabular-nums;
}
.hero-doc-row:last-of-type { border-bottom: 1px solid var(--border-default); }
.hero-doc-foot {
  display: grid; grid-template-columns: 1fr 60px 80px;
  padding-top: 10px;
  font-weight: 600;
  color: var(--brand-900);
  font-size: var(--text-md);
}

/* Stamp visual on hero */
.hero-stamp {
  position: absolute;
  right: -10px; bottom: 20px;
  width: 130px; height: 130px;
  border-radius: 50%;
  border: 3px solid var(--accent-500);
  background: rgba(139, 35, 49, 0.04);
  transform: rotate(-12deg);
  display: grid; place-items: center;
  z-index: 10;
  box-shadow: 0 6px 18px rgba(139, 35, 49, 0.15);
}
.hero-stamp::before {
  content: '';
  position: absolute; inset: 8px;
  border-radius: 50%;
  border: 1px solid var(--accent-500);
}
.hero-stamp svg.ring { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-stamp-core {
  font-family: var(--font-sans);
  color: var(--accent-500);
  text-align: center;
  font-weight: 700;
  z-index: 1;
}
.hero-stamp-core .big { font-size: 22px; letter-spacing: 0.06em; }
.hero-stamp-core .sub { font-size: 9px; letter-spacing: 0.16em; margin-top: 2px; font-weight: 600; }
.hero-stamp-core .date { font-family: var(--font-mono); font-size: 10px; margin-top: 4px; color: var(--accent-700); font-weight: 500; }

/* ====================================================================
   FEATURE BLOCKS — alternating
   ==================================================================== */
.feat-block {
  padding: 96px 0;
  border-bottom: 1px solid var(--border-subtle);
}
.feat-block:nth-child(even) { background: var(--gray-25); }
.feat-block-inner {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 64px;
  align-items: center;
}
.feat-block.reverse .feat-block-inner { grid-template-columns: 7fr 5fr; }
.feat-block.reverse .feat-text { order: 2; }
.feat-block.reverse .feat-visual { order: 1; }

.feat-tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--brand-50);
  color: var(--brand-700);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
}
.feat-tag.danger { background: var(--danger-50); color: var(--danger-700); }
.feat-tag.success { background: var(--success-50); color: var(--success-700); }
.feat-tag .icon { width: 14px; height: 14px; }

.feat-text h2 {
  font-size: 36px; font-weight: 600;
  line-height: 1.18; letter-spacing: var(--tracking-cn-display);
  color: var(--brand-900); margin: 0 0 16px;
}
.feat-text p.lead {
  font-size: var(--text-lg); line-height: 1.7;
  color: var(--gray-600); margin: 0 0 24px;
}
.feat-bullets { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 14px; }
.feat-bullets li {
  display: grid; grid-template-columns: 22px 1fr;
  gap: 12px;
  font-size: var(--text-md); color: var(--gray-700);
  line-height: 1.6; align-items: start;
}
.feat-bullets li .icon { width: 18px; height: 18px; color: var(--brand-500); margin-top: 2px; }
.feat-bullets li strong { color: var(--brand-900); font-weight: 600; display: block; margin-bottom: 2px; }

/* ====================================================================
   BLOCK 1: STATE MACHINE
   ==================================================================== */
.state-machine {
  background: var(--gray-0);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 48px 36px 40px;
  position: relative;
  overflow: hidden;
}
.state-machine-tabs {
  position: absolute; top: 16px; left: 16px;
  display: flex; gap: 2px;
  background: var(--gray-50);
  padding: 3px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-default);
}
.state-tab {
  padding: 4px 12px;
  font-size: 11px;
  font-weight: 500;
  color: var(--fg-muted);
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
}
.state-tab.active {
  background: var(--brand-500); color: #fff;
}
.state-machine-meta {
  position: absolute; top: 24px; right: 20px;
  font-size: 11px; color: var(--fg-subtle);
  font-family: var(--font-mono); letter-spacing: 0.04em;
}

/* Diagram */
.sm-diagram {
  display: grid;
  grid-template-columns: 1fr 50px 1fr 50px 1fr;
  gap: 0;
  align-items: center;
  margin-top: 24px;
}
.sm-node {
  display: flex; flex-direction: column;
  align-items: center; gap: 8px;
}
.sm-bubble {
  padding: 12px 18px;
  border-radius: var(--radius-pill);
  font-size: var(--text-md);
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 2px solid;
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--gray-0);
}
.sm-bubble .icon { width: 14px; height: 14px; }
.sm-node.draft .sm-bubble { border-color: var(--gray-300); color: var(--gray-700); background: var(--gray-50); }
.sm-node.pending .sm-bubble { border-color: var(--info-500); color: var(--info-700); background: var(--info-50); }
.sm-node.approved .sm-bubble {
  border-color: var(--success-500); color: var(--success-700);
  background: var(--success-50);
  box-shadow: 0 0 0 4px rgba(46, 139, 87, 0.10);
}
.sm-node.rejected .sm-bubble { border-color: var(--danger-500); color: var(--danger-700); background: var(--danger-50); }
.sm-node small { font-size: 11px; color: var(--fg-muted); font-family: var(--font-mono); }

.sm-arrow {
  display: flex; align-items: center; justify-content: center;
  color: var(--gray-400);
  position: relative;
}
.sm-arrow svg { width: 36px; height: 14px; }
.sm-arrow-label {
  position: absolute; top: -22px;
  font-size: 10px; color: var(--fg-subtle);
  font-family: var(--font-mono); letter-spacing: 0.04em;
  white-space: nowrap;
}

.sm-fork {
  display: flex; flex-direction: column; gap: 20px;
  position: relative;
}
.sm-fork::before {
  content: '';
  position: absolute;
  left: -28px; top: 50%; transform: translateY(-50%);
  width: 1px; height: 60%;
  background: var(--gray-300);
}

/* applies-to legend */
.sm-applies {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px dashed var(--border-default);
  display: flex; gap: 10px; align-items: center;
  flex-wrap: wrap;
  font-size: var(--text-xs);
  color: var(--fg-muted);
  letter-spacing: 0.02em;
}
.sm-applies-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  background: var(--gray-50);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  font-size: 11px;
  color: var(--gray-700);
  font-weight: 500;
}
.sm-applies-pill .icon { width: 12px; height: 12px; color: var(--brand-500); }

/* ====================================================================
   BLOCK 2: AUTO-LINKING — Before/After
   ==================================================================== */
.linking-visual {
  display: flex; flex-direction: column; gap: 0;
}
.linking-doc {
  background: var(--gray-0);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 20px 24px;
  position: relative;
}
.linking-doc-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 12px;
}
.linking-doc-id {
  font-family: var(--font-mono); font-size: var(--text-md);
  color: var(--brand-700); font-weight: 600;
}
.linking-doc-action {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px;
  background: var(--success-500); color: #fff;
  border-radius: var(--radius-md);
  font-size: 12px; font-weight: 600;
  letter-spacing: 0.04em;
}
.linking-doc-action .icon { width: 14px; height: 14px; }

.linking-arrow {
  width: 100%;
  display: flex; align-items: center; justify-content: center;
  padding: 16px 0;
  position: relative;
}
.linking-arrow::before, .linking-arrow::after {
  content: ''; height: 1px; flex: 1;
  background: var(--gray-200);
}
.linking-arrow-label {
  margin: 0 14px;
  padding: 4px 14px;
  background: var(--success-50);
  color: var(--success-700);
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  display: inline-flex; align-items: center; gap: 6px;
}
.linking-arrow-label .icon { width: 13px; height: 13px; }

.linking-effects {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.linking-effect {
  background: var(--gray-0);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: relative;
}
.linking-effect-label {
  font-size: 11px; color: var(--fg-muted);
  font-weight: 600; letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: flex; align-items: center; gap: 6px;
}
.linking-effect-label .icon { width: 14px; height: 14px; color: var(--brand-500); }
.linking-effect-num {
  font-size: 28px; font-weight: 700;
  color: var(--brand-900);
  font-variant-numeric: tabular-nums;
  font-family: var(--font-mono);
}
.linking-effect-from {
  font-size: 12px; color: var(--fg-subtle);
  font-family: var(--font-mono);
  margin-top: 4px;
  font-variant-numeric: tabular-nums;
}
.linking-effect-from .delta { color: var(--success-700); font-weight: 600; }

/* ====================================================================
   BLOCK 3: STOCK VALIDATION — Error visual
   ==================================================================== */
.validation-card {
  background: var(--gray-0);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.validation-head {
  padding: 16px 20px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--border-subtle);
  display: flex; justify-content: space-between; align-items: center;
}
.validation-title { font-size: var(--text-sm); font-weight: 600; color: var(--brand-900); }
.validation-meta { font-size: 11px; color: var(--fg-muted); font-family: var(--font-mono); }

.validation-body { padding: 20px; }
.validation-row {
  display: grid;
  grid-template-columns: 1fr 60px 60px 80px;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-subtle);
  font-size: var(--text-sm);
  align-items: center;
  font-variant-numeric: tabular-nums;
}
.validation-row.head { font-size: 11px; color: var(--fg-muted); font-weight: 500; padding-top: 0; }
.validation-row .qty-req { font-weight: 600; color: var(--gray-900); }
.validation-row .qty-stock { color: var(--gray-700); }
.validation-row .qty-shortage {
  background: var(--danger-50);
  color: var(--danger-700);
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  font-size: 11px;
  text-align: center;
  display: inline-block;
}
.validation-row.invalid .qty-req { color: var(--danger-700); }

.error-toast {
  margin: 16px 0 0;
  padding: 14px 16px;
  background: var(--danger-50);
  border: 1px solid #F8B4B4;
  border-left: 3px solid var(--danger-500);
  border-radius: var(--radius-md);
  display: grid; grid-template-columns: 22px 1fr;
  gap: 12px;
}
.error-toast .icon { width: 18px; height: 18px; color: var(--danger-700); margin-top: 1px; }
.error-toast-title {
  font-size: var(--text-sm); font-weight: 600;
  color: var(--danger-700);
  margin-bottom: 2px;
}
.error-toast-body { font-size: 12px; color: var(--gray-700); line-height: 1.55; }

.api-response {
  background: var(--gray-900);
  color: #DCE2EB;
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  margin-top: 16px;
  line-height: 1.7;
  overflow-x: auto;
}
.api-response .key { color: #ADC9EA; }
.api-response .str { color: #C97B86; }
.api-response .num { color: #FFD9A6; }
.api-response .bool { color: #C97B86; font-weight: 500; }

/* ====================================================================
   BLOCK 4: AUDIT LOG TIMELINE
   ==================================================================== */
.audit-timeline {
  background: var(--gray-0);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.audit-head {
  padding: 14px 18px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--border-subtle);
  display: flex; justify-content: space-between; align-items: center;
}
.audit-doc-id { font-family: var(--font-mono); color: var(--brand-700); font-size: var(--text-sm); font-weight: 600; }
.audit-doc-status {
  padding: 3px 10px; border-radius: var(--radius-pill);
  background: var(--success-50); color: var(--success-700);
  font-size: 11px; font-weight: 600;
}

.audit-events { padding: 4px 18px 18px; }
.audit-event {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
}
.audit-event:last-child { border-bottom: none; }

.audit-event-marker {
  width: 32px; height: 32px;
  border-radius: 50%;
  display: grid; place-items: center;
  position: relative;
  z-index: 1;
}
.audit-event-marker .icon { width: 16px; height: 16px; }
.audit-event.create .audit-event-marker { background: var(--gray-100); color: var(--gray-700); }
.audit-event.submit .audit-event-marker { background: var(--info-50); color: var(--info-700); border: 1px solid var(--info-500); }
.audit-event.approve .audit-event-marker { background: var(--success-50); color: var(--success-700); border: 1px solid var(--success-500); }
.audit-event.reject .audit-event-marker { background: var(--danger-50); color: var(--danger-700); border: 1px solid var(--danger-500); }
.audit-event.settle .audit-event-marker { background: var(--brand-50); color: var(--brand-700); border: 1px solid var(--brand-500); }

.audit-event::before {
  content: '';
  position: absolute;
  left: 15px; top: 32px; bottom: -14px;
  width: 1px;
  background: var(--gray-200);
}
.audit-event:last-child::before { display: none; }

.audit-event-body { padding-top: 5px; }
.audit-event-action {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--brand-900);
  margin-bottom: 2px;
}
.audit-event-meta {
  font-size: 12px; color: var(--fg-muted);
  display: flex; gap: 12px;
  flex-wrap: wrap;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}
.audit-event-meta strong { color: var(--gray-800); font-weight: 500; }
.audit-event-meta .time { font-family: var(--font-mono); font-size: 11px; }
.audit-event-comment {
  margin-top: 6px;
  padding: 8px 12px;
  background: var(--gray-25);
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--gray-700);
  line-height: 1.55;
  font-style: italic;
  border-left: 2px solid var(--gray-300);
}

/* ====================================================================
   REVERSAL STYLES (unused, kept for possible future use)
   ==================================================================== */
.reversal-pair {
  display: grid;
  grid-template-columns: 1fr 60px 1fr;
  gap: 0;
  align-items: center;
}
.reversal-doc {
  background: var(--gray-0);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 18px;
  position: relative;
}
.reversal-doc.original .reversal-stamp-mini { color: var(--success-500); border-color: var(--success-500); }
.reversal-doc.reversal {
  background: linear-gradient(135deg, #FDFAFA 0%, #FFF 100%);
  border-color: #F1D2D7;
}
.reversal-stamp-mini {
  position: absolute;
  top: 14px; right: 14px;
  font-size: 10px;
  border: 1.5px solid var(--accent-500);
  color: var(--accent-500);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  transform: rotate(-4deg);
}
.reversal-doc-id {
  font-family: var(--font-mono); font-size: 13px;
  color: var(--brand-700); font-weight: 600;
  margin-bottom: 4px;
}
.reversal-doc-meta {
  font-size: 11px; color: var(--fg-muted);
  font-family: var(--font-mono);
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}
.reversal-doc-row {
  display: grid; grid-template-columns: 1fr 60px;
  font-size: 12px;
  padding: 5px 0;
  color: var(--gray-700);
  font-variant-numeric: tabular-nums;
}
.reversal-doc.reversal .reversal-doc-row { color: var(--accent-700); }
.reversal-doc-foot {
  margin-top: 12px; padding-top: 10px;
  border-top: 1px solid var(--border-default);
  font-size: var(--text-sm); font-weight: 700;
  color: var(--brand-900);
  display: grid; grid-template-columns: 1fr 70px;
  font-variant-numeric: tabular-nums;
}
.reversal-doc.reversal .reversal-doc-foot { color: var(--accent-500); }
.reversal-arrow {
  display: flex; flex-direction: column;
  align-items: center; gap: 6px;
  color: var(--accent-500);
  font-size: 10px;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}
.reversal-arrow svg { width: 24px; height: 24px; }
.reversal-arrow-label {
  background: var(--accent-50);
  color: var(--accent-700);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.reversal-net {
  margin-top: 24px;
  padding: 16px 20px;
  background: var(--brand-900);
  color: #fff;
  border-radius: var(--radius-md);
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
}
.reversal-net-item { text-align: center; }
.reversal-net-label {
  font-size: 11px; color: #ADC9EA;
  letter-spacing: 0.06em; margin-bottom: 4px;
}
.reversal-net-val {
  font-size: var(--text-xl); font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-family: var(--font-mono);
}

/* ====================================================================
   BLOCK 6: PERMISSION MATRIX
   ==================================================================== */
.perm-matrix {
  background: var(--gray-0);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.perm-row {
  display: grid;
  grid-template-columns: 200px repeat(4, 1fr);
  align-items: center;
  border-bottom: 1px solid var(--border-subtle);
  font-size: var(--text-sm);
}
.perm-row.head {
  background: var(--brand-900); color: #fff;
  font-size: 12px; font-weight: 500;
  letter-spacing: 0.04em;
}
.perm-row.head > div { padding: 14px 16px; }
.perm-row.head > div:not(:first-child) { text-align: center; border-left: 1px solid rgba(255,255,255,0.08); }
.perm-row:last-child { border-bottom: none; }
.perm-role {
  padding: 16px 20px;
  background: var(--gray-25);
  font-weight: 600;
  color: var(--brand-900);
}
.perm-role small {
  display: block; font-weight: 400;
  color: var(--fg-muted);
  font-size: 11px;
  margin-top: 2px;
  letter-spacing: 0.02em;
}
.perm-cell {
  padding: 16px;
  text-align: center;
  border-left: 1px solid var(--border-subtle);
}
.perm-cell .icon { width: 18px; height: 18px; display: inline-block; }
.perm-cell.yes .icon { color: var(--success-500); }
.perm-cell.no .icon { color: var(--gray-300); }
.perm-cell.partial { color: var(--warning-500); font-size: 11px; font-weight: 500; }

/* ====================================================================
   USE CASES
   ==================================================================== */
.usecases-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
  margin-top: 48px;
}
.usecase-card {
  background: var(--gray-0);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.usecase-card .icon { width: 36px; height: 36px; color: var(--brand-500); margin-bottom: 16px; }
.usecase-card h4 { margin: 0 0 8px; font-size: var(--text-lg); font-weight: 600; color: var(--brand-900); }
.usecase-card p { margin: 0; font-size: var(--text-sm); color: var(--gray-700); line-height: 1.65; }
.usecase-card .quote {
  margin-top: 14px;
  font-size: 12px;
  color: var(--fg-muted);
  font-style: italic;
  border-left: 2px solid var(--brand-300);
  padding-left: 12px;
}

/* Final CTA */
.cta-strip {
  background:
    radial-gradient(800px 360px at 20% 30%, rgba(139, 35, 49, 0.20), transparent 60%),
    linear-gradient(135deg, #0A1F3B 0%, #15407D 100%);
  color: #fff;
  border-radius: var(--radius-xl);
  padding: 56px 48px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
  align-items: center;
  margin: 0 0 96px;
}
.cta-strip h2 { font-size: 32px; font-weight: 600; letter-spacing: var(--tracking-cn-display); color: #fff; margin: 0 0 12px; line-height: 1.25; }
.cta-strip p { font-size: var(--text-md); color: #ADC9EA; margin: 0; line-height: 1.6; }
.cta-strip-actions { display: flex; flex-direction: column; gap: 10px; align-items: flex-end; }
.cta-strip .btn-primary { background: #fff; color: var(--brand-700); }
.cta-strip .btn-primary:hover { background: #DCE2EB; }
.cta-strip .btn-secondary { background: transparent; color: #fff; border-color: rgba(255,255,255,0.30); }
.cta-strip .btn-secondary:hover { background: rgba(255,255,255,0.10); }

/* Footer */
footer { background: var(--gray-25); border-top: 1px solid var(--border-subtle); padding: 64px 0 32px; color: var(--fg-muted); font-size: var(--text-sm); }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(4, 1fr); gap: 48px; margin-bottom: 48px; }
.footer-brand img { height: 32px; margin-bottom: 16px; }
.footer-brand p { margin: 0 0 16px; max-width: 320px; line-height: 1.6; color: var(--fg-muted); }
.footer-contact { font-size: var(--text-sm); color: var(--gray-700); line-height: 1.8; }
.footer-col h5 { font-size: var(--text-xs); font-weight: 600; color: var(--brand-900); letter-spacing: 0.06em; margin: 0 0 16px; text-transform: uppercase; }
.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col li a { color: var(--gray-600); }
.footer-col li a:hover { color: var(--brand-500); }
.footer-bottom { border-top: 1px solid var(--border-subtle); padding-top: 24px; display: flex; justify-content: space-between; font-size: var(--text-xs); color: var(--fg-subtle); }

@media (max-width: 1024px) {
  .feat-hero-inner, .feat-block-inner, .feat-block.reverse .feat-block-inner, .cta-strip, .linking-effects, .reversal-pair { grid-template-columns: 1fr; gap: 24px; }
  .feat-block.reverse .feat-text, .feat-block.reverse .feat-visual { order: initial; }
  .usecases-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .feat-hero h1 { font-size: 36px; }
  .sm-diagram { grid-template-columns: 1fr; gap: 16px; }
  .sm-arrow { transform: rotate(90deg); }
  .perm-row { grid-template-columns: 130px repeat(4, 1fr); }
  .reversal-arrow { transform: rotate(90deg); padding: 16px 0; }
}
/* Hamburger */
.nav-hamburger { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 40px; height: 40px; padding: 8px; background: none; border: none; cursor: pointer; border-radius: 8px; }
.nav-hamburger span { display: block; height: 2px; width: 22px; background: var(--gray-700); border-radius: 2px; }
.nav-mobile-menu { display: none; flex-direction: column; background: var(--gray-0); border-top: 1px solid var(--border-subtle); padding: 8px 0 16px; }
.nav-mobile-menu.open { display: flex; }
.nav-mobile-menu a { padding: 12px 24px; font-size: var(--text-md); color: var(--gray-700); font-weight: 500; }
.nav-mobile-menu a:hover { background: var(--gray-50); color: var(--brand-900); }
.nav-mobile-cta { display: flex; flex-direction: column; gap: 8px; padding: 12px 24px 0; border-top: 1px solid var(--border-subtle); margin-top: 8px; }
@media (max-width: 768px) {
  .nav-hamburger { display: flex; }
  .topnav-links, .topnav-cta { display: none; }
  .feat-hero-inner { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .topnav-inner { padding: 0 16px; }
  .feat-hero h1 { font-size: 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .usecases-grid { grid-template-columns: 1fr; }
  .perm-row { overflow-x: auto; }
  .container { padding: 0 16px; }
}
</style>