:root {
  color-scheme: light;
  --landing-bg: #fbfbfa;
  --landing-surface: #ffffff;
  --landing-surface-subtle: #f4f4f1;
  --landing-surface-inset: #edece8;
  --landing-border: #e5e5e0;
  --landing-border-strong: #d0d0c8;
  --landing-text-main: #0d121c;
  --landing-text-sub: #4b5565;
  --landing-text-muted: #6e7787;
  --landing-accent: #1e3a8a;
  --landing-accent-hover: #172554;
  --landing-accent-subtle: #eff6ff;
  --landing-accent-border: #bfdbfe;
  --landing-rule: #e8e8e3;
  --landing-paper-shadow: 0 1px 3px rgba(15, 23, 42, 0.05), 0 24px 48px -18px rgba(15, 23, 42, 0.12);
  --landing-card-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
  --font-editorial: 'EB Garamond', 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --landing-bg: #090d13;
  --landing-surface: #111620;
  --landing-surface-subtle: #171e2b;
  --landing-surface-inset: #1f2736;
  --landing-border: #232c3d;
  --landing-border-strong: #334055;
  --landing-text-main: #f0f4f9;
  --landing-text-sub: #9caabf;
  --landing-text-muted: #6f7e94;
  --landing-accent: #5b95f7;
  --landing-accent-hover: #7eb0fa;
  --landing-accent-subtle: rgba(91, 149, 247, 0.12);
  --landing-accent-border: rgba(91, 149, 247, 0.32);
  --landing-rule: #1e2634;
  --landing-paper-shadow: 0 2px 8px rgba(0, 0, 0, 0.45), 0 32px 70px -18px rgba(0, 0, 0, 0.75);
  --landing-card-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}
#specimen,
#comparison,
#capabilities,
#standards,
#faq {
  scroll-margin-top: 84px;
}
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: var(--reveal-delay, 0s);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}
.comparison-col.reveal:nth-child(1) { --reveal-delay: 0s; }
.comparison-col.reveal:nth-child(2) { --reveal-delay: 0.12s; }
.comparison-col.reveal:nth-child(3) { --reveal-delay: 0.24s; }
.pillars-grid .pillar-item.reveal:nth-child(1) { --reveal-delay: 0s; }
.pillars-grid .pillar-item.reveal:nth-child(2) { --reveal-delay: 0.1s; }
.pillars-grid .pillar-item.reveal:nth-child(3) { --reveal-delay: 0.2s; }
.pillars-grid .pillar-item.reveal:nth-child(4) { --reveal-delay: 0.3s; }
.faq-list .faq-item.reveal:nth-child(1) { --reveal-delay: 0s; }
.faq-list .faq-item.reveal:nth-child(2) { --reveal-delay: 0.06s; }
.faq-list .faq-item.reveal:nth-child(3) { --reveal-delay: 0.12s; }
.faq-list .faq-item.reveal:nth-child(4) { --reveal-delay: 0.18s; }
.faq-list .faq-item.reveal:nth-child(5) { --reveal-delay: 0.24s; }
.faq-list .faq-item.reveal:nth-child(6) { --reveal-delay: 0.3s; }
body {
  background-color: var(--landing-bg);
  color: var(--landing-text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.2s ease, color 0.2s ease;
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
}
.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
}
.container-narrow {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 28px;
}
h1, h2, h3, h4 {
  color: var(--landing-text-main);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
}
p {
  color: var(--landing-text-sub);
  font-size: 1.05rem;
  line-height: 1.68;
}
a {
  color: inherit;
  text-decoration: none;
}
.section-rule {
  border: none;
  border-top: 1px solid var(--landing-rule);
  margin: 0;
}
.nav-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--landing-bg);
  border-bottom: 1px solid var(--landing-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.nav-logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background-color: var(--landing-accent);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
:root[data-theme="dark"] .nav-logo-icon {
  background-color: var(--landing-accent);
  color: #090d13;
}
.nav-titles {
  display: flex;
  flex-direction: column;
}
.nav-brand-name {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--landing-text-main);
}
.nav-brand-sub {
  font-size: 0.72rem;
  color: var(--landing-text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}
.nav-link {
  font-size: 0.92rem;
  color: var(--landing-text-sub);
  font-weight: 500;
  transition: color 0.15s ease;
}
.nav-link:hover {
  color: var(--landing-accent);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}
.theme-btn {
  width: 34px;
  height: 34px;
  border-radius: 7px;
  border: 1px solid var(--landing-border);
  background-color: var(--landing-surface);
  color: var(--landing-text-sub);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.15s, border-color 0.15s, color 0.15s;
}
.theme-btn:hover {
  background-color: var(--landing-surface-subtle);
  border-color: var(--landing-border-strong);
  color: var(--landing-text-main);
}
.theme-btn .icon-sun { display: none !important; }
.theme-btn .icon-moon { display: block !important; }
:root[data-theme="dark"] .theme-btn .icon-sun { display: block !important; }
:root[data-theme="dark"] .theme-btn .icon-moon { display: none !important; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--landing-accent);
  color: #ffffff;
  padding: 8px 18px;
  border-radius: 7px;
  font-size: 0.92rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, transform 0.1s ease;
  white-space: nowrap;
}
:root[data-theme="dark"] .btn-primary {
  background-color: var(--landing-accent);
  color: #090d13;
}
.btn-primary:hover {
  background-color: var(--landing-accent-hover);
}
.btn-primary:active {
  transform: translateY(1px);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--landing-surface);
  color: var(--landing-text-main);
  padding: 8px 18px;
  border-radius: 7px;
  font-size: 0.92rem;
  font-weight: 500;
  border: 1px solid var(--landing-border-strong);
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}
.btn-secondary:hover {
  background-color: var(--landing-surface-subtle);
  border-color: var(--landing-text-muted);
}
.hero-section {
  padding: 84px 0 72px;
  text-align: center;
  position: relative;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border-radius: 20px;
  background-color: var(--landing-surface-subtle);
  border: 1px solid var(--landing-border);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--landing-text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.hero-eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #16a34a;
}
.hero-title {
  font-family: var(--font-editorial);
  font-size: clamp(2.4rem, 5.2vw, 4.2rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--landing-text-main);
  max-width: 980px;
  margin: 0 auto 24px;
}
.hero-title em {
  font-style: italic;
  font-weight: 400;
  color: var(--landing-accent);
}
.hero-desc {
  font-size: clamp(1.08rem, 1.6vw, 1.28rem);
  color: var(--landing-text-sub);
  max-width: 740px;
  margin: 0 auto 36px;
  line-height: 1.65;
}
.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}
.hero-cta-group .btn-primary {
  padding: 12px 28px;
  font-size: 1.02rem;
  border-radius: 8px;
}
.hero-cta-group .btn-secondary {
  padding: 12px 24px;
  font-size: 1.02rem;
  border-radius: 8px;
}
.hero-meta-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  color: var(--landing-text-muted);
  font-size: 0.84rem;
  margin-bottom: 64px;
}
.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}
.hero-meta-item svg {
  color: var(--landing-accent);
  flex-shrink: 0;
}
.specimen-stage {
  margin: 0 auto;
  max-width: 920px;
  position: relative;
}
.specimen-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 16px;
  padding: 8px 12px;
  background-color: var(--landing-surface);
  border: 1px solid var(--landing-border);
  border-radius: 8px;
}
.specimen-toolbar-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--landing-text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 600;
  margin-right: 4px;
}
.specimen-preset-chips,
.specimen-toggles {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.preset-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 20px;
  background-color: var(--landing-surface-subtle);
  border: 1px solid var(--landing-border);
  color: var(--landing-text-sub);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}
.preset-chip:hover {
  background-color: var(--landing-surface);
  border-color: var(--landing-border-strong);
  color: var(--landing-text-main);
}
.preset-chip.active {
  background-color: var(--landing-accent-subtle);
  border-color: var(--landing-accent-border);
  color: var(--landing-accent);
  font-weight: 600;
}
.chip-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}
.toggle-tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 6px;
  background-color: var(--landing-surface-subtle);
  border: 1px solid var(--landing-border);
  color: var(--landing-text-sub);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}
.toggle-tool-btn:hover {
  background-color: var(--landing-surface);
  border-color: var(--landing-border-strong);
  color: var(--landing-text-main);
}
.toggle-tool-btn.active {
  background-color: var(--landing-accent-subtle);
  border-color: var(--landing-accent-border);
  color: var(--landing-accent);
  font-weight: 600;
}
.toggle-tool-btn svg {
  flex-shrink: 0;
}
.specimen-wrapper {
  background-color: var(--landing-surface-subtle);
  border: 1px solid var(--landing-border);
  border-radius: 12px;
  padding: 48px 36px;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}
.din-markers {
  position: absolute;
  left: 12px;
  top: 48px;
  bottom: 48px;
  width: 20px;
  pointer-events: none;
  opacity: 0.3;
  transition: opacity 0.2s ease;
}
.specimen-stage.show-guides .din-markers {
  opacity: 1;
}
.din-marker {
  position: absolute;
  left: 0;
  width: 14px;
  height: 1.5px;
  background-color: var(--landing-accent);
}
.din-marker span {
  position: absolute;
  left: 18px;
  top: -7px;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  color: var(--landing-accent);
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.specimen-stage.show-guides .din-marker span {
  opacity: 1;
}
.din-marker.fold-1 { top: 35.35%; }
.din-marker.punch { top: 50%; width: 18px; }
.din-marker.fold-2 { top: 70.7%; }
.paper-sheet {
  width: 100%;
  max-width: 720px;
  min-height: 840px;
  background-color: #ffffff;
  color: #0f172a;
  box-shadow: var(--landing-paper-shadow);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 3px;
  padding: 54px 52px;
  display: flex;
  flex-direction: column;
  text-align: left;
  position: relative;
  font-family: var(--font-sans);
  font-size: 10pt;
  line-height: 1.55;
  transition: all 0.2s ease;
  overflow: hidden;
}
.specimen-watermark {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(3rem, 7.5vw, 6rem);
  font-weight: 900;
  font-family: var(--font-sans);
  color: rgba(15, 23, 42, 0.04);
  transform: rotate(-32deg);
  pointer-events: none;
  user-select: none;
  letter-spacing: 0.15em;
  opacity: 0;
  transition: opacity 0.25s ease;
  z-index: 10;
}
.specimen-stage.show-watermark .specimen-watermark {
  opacity: 1;
  color: rgba(220, 38, 38, 0.08);
}
.specimen-pin {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  background-color: var(--landing-surface);
  border: 1px solid var(--landing-border-strong);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--landing-text-sub);
  box-shadow: var(--landing-card-shadow);
  pointer-events: none;
  z-index: 15;
  transition: opacity 0.2s ease;
}
.pin-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--landing-accent);
}
.pin-header {
  top: 18px;
  right: -12px;
}
.pin-window {
  top: 220px;
  left: -16px;
}
.pin-seal {
  bottom: 60px;
  right: -14px;
}
.paper-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 20px;
  border-bottom: 1.5px solid var(--doc-accent, #1e3a8a);
  margin-bottom: 24px;
}
.paper-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.paper-logo {
  width: 44px;
  height: 44px;
  object-fit: contain;
}
.paper-org-name {
  font-size: 13pt;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--doc-accent, #1e3a8a);
  text-transform: uppercase;
  margin-bottom: 2px;
}
.paper-org-tagline {
  font-size: 8.5pt;
  color: #64748b;
  letter-spacing: 0.02em;
}
.paper-contact-block {
  text-align: right;
  font-size: 8pt;
  color: #475467;
  line-height: 1.45;
}
.paper-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 9pt;
  color: #475467;
  margin-bottom: 22px;
}
.paper-meta-ref {
  font-family: var(--font-mono);
  font-size: 8.5pt;
}
.paper-recipient-wrap {
  position: relative;
  margin-bottom: 24px;
}
.envelope-window-overlay {
  position: absolute;
  inset: -6px -10px;
  border: 1.5px dashed transparent;
  border-radius: 4px;
  pointer-events: none;
  transition: all 0.2s ease;
}
.specimen-stage.show-guides .envelope-window-overlay {
  border-color: var(--landing-accent);
  background-color: rgba(30, 58, 138, 0.04);
}
.window-guide-tag {
  display: none;
  position: absolute;
  top: -16px;
  right: 0;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--landing-accent);
  font-weight: 600;
  letter-spacing: 0.04em;
}
.specimen-stage.show-guides .window-guide-tag {
  display: block;
}
.paper-recipient {
  font-size: 9.5pt;
  color: #334155;
  line-height: 1.45;
}
.return-address-line {
  font-size: 7pt;
  font-family: var(--font-mono);
  color: #94a3b8;
  letter-spacing: 0.03em;
  margin-bottom: 4px;
  text-transform: uppercase;
}
.paper-recipient strong {
  color: #0f172a;
  font-size: 10pt;
}
.paper-subject {
  font-size: 10.5pt;
  font-weight: 700;
  color: var(--doc-accent, #1e3a8a);
  letter-spacing: 0.01em;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.paper-body {
  font-size: 9.5pt;
  color: #1e293b;
  line-height: 1.62;
  margin-bottom: 24px;
}
.paper-body p {
  color: #1e293b;
  font-size: 9.5pt;
  margin-bottom: 12px;
}
.paper-signoff {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding-top: 20px;
}
.paper-signature-block {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.paper-signature-img {
  height: 38px;
  width: auto;
  object-fit: contain;
  margin-bottom: 4px;
  filter: brightness(0.2) sepia(1) hue-rotate(190deg);
}
.paper-signer-name {
  font-weight: 700;
  font-size: 9.5pt;
  color: #0f172a;
}
.paper-signer-title {
  font-size: 8.5pt;
  color: #64748b;
}
.paper-seal-block {
  display: flex;
  align-items: center;
  gap: 12px;
}
.paper-seal-img {
  width: 60px;
  height: 60px;
  opacity: 0.85;
}
.paper-footer {
  margin-top: 24px;
  padding-top: 12px;
  border-top: 1px solid #e2e8f0;
  display: flex;
  justify-content: space-between;
  font-size: 7.5pt;
  color: #64748b;
}
.capabilities-section {
  padding: 104px 0;
}
.vignettes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin-top: 48px;
}
.vignette-card {
  background-color: var(--landing-surface);
  border: 1px solid var(--landing-border);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.vignette-card:hover {
  border-color: var(--landing-border-strong);
}
.vignette-preview {
  height: 220px;
  background-color: var(--landing-surface-subtle);
  border-bottom: 1px solid var(--landing-border);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  position: relative;
  overflow: hidden;
}
.vignette-info {
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.vignette-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--landing-accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.vignette-title {
  font-family: var(--font-editorial);
  font-size: 1.45rem;
  font-weight: 600;
  color: var(--landing-text-main);
  line-height: 1.25;
}
.vignette-desc {
  font-size: 0.94rem;
  color: var(--landing-text-sub);
  line-height: 1.6;
}
.visual-envelope-stage {
  position: relative;
  width: 240px;
  height: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.visual-sheet-fold {
  width: 170px;
  height: 136px;
  background-color: #ffffff;
  border: 1px solid #d0d7de;
  border-radius: 3px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.fold-section {
  position: relative;
}
.fold-section.fold-top {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 6px;
  border-bottom: 1px dashed #cbd5e1;
}
.mini-logo {
  width: 14px;
  height: 14px;
  background-color: var(--landing-accent);
  border-radius: 2px;
}
.fold-section.fold-mid {
  padding: 6px 0;
  border-bottom: 1px dashed #cbd5e1;
}
.mini-line {
  height: 4px;
  background-color: #e2e8f0;
  border-radius: 2px;
  margin-bottom: 4px;
}
.mini-line.w-40 { width: 40%; }
.mini-line.w-50 { width: 50%; }
.mini-line.w-60 { width: 60%; }
.mini-line.w-70 { width: 70%; }
.mini-line.w-75 { width: 75%; }
.mini-line.w-80 { width: 80%; }
.mini-line.w-85 { width: 85%; }
.mini-line.w-90 { width: 90%; }
.visual-envelope-sleeve {
  position: absolute;
  inset: 0;
  border: 1.5px solid var(--landing-border-strong);
  border-radius: 6px;
  background: rgba(240, 244, 249, 0.45);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}
:root[data-theme="dark"] .visual-envelope-sleeve {
  background: rgba(17, 22, 32, 0.7);
}
.envelope-cutout-window {
  width: 154px;
  height: 64px;
  border: 1.5px dashed var(--landing-accent);
  border-radius: 4px;
  background-color: #ffffff;
  padding: 6px 10px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05);
}
.envelope-cutout-label {
  position: absolute;
  top: -14px;
  left: 0;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--landing-accent);
  font-weight: 700;
  white-space: nowrap;
}
.revealed-recipient {
  display: flex;
  flex-direction: column;
  font-size: 0.62rem;
  line-height: 1.35;
  color: #1e293b;
}
.revealed-recipient strong {
  font-size: 0.68rem;
  color: #0f172a;
}
.visual-pages-stack {
  position: relative;
  width: 220px;
  height: 160px;
}
.visual-mini-page {
  position: absolute;
  width: 140px;
  height: 150px;
  background-color: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 3px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
  padding: 12px 10px;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease;
}
.visual-mini-page.page-1 {
  left: 10px;
  top: 0;
  z-index: 1;
}
.visual-mini-page.page-2 {
  right: 10px;
  bottom: 0;
  z-index: 2;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.12);
}
.mini-page-badge {
  position: absolute;
  top: 4px;
  right: 6px;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: #94a3b8;
  font-weight: 600;
}
.mini-crest-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding-bottom: 6px;
  border-bottom: 1.5px solid var(--landing-accent);
  margin-bottom: 8px;
}
.mini-continuation-strip {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.52rem;
  color: #64748b;
  padding-bottom: 4px;
  border-bottom: 1px solid #e2e8f0;
  margin-bottom: 8px;
}
.mini-body-lines {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.mini-sign-seal {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}
.visual-auth-card {
  width: 100%;
  max-width: 320px;
  background-color: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 16px 18px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
}
.visual-signature-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
}
.signature-display {
  display: flex;
  flex-direction: column;
}
.auth-sig-svg {
  height: 32px;
  width: auto;
  margin-bottom: 4px;
}
.sig-line {
  width: 110px;
  height: 1px;
  background-color: #cbd5e1;
  margin-bottom: 4px;
}
.auth-name {
  font-size: 0.72rem;
  font-weight: 700;
  color: #0f172a;
}
.auth-title {
  font-size: 0.62rem;
  color: #64748b;
}
.seal-display,
.qr-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.auth-seal-svg {
  width: 44px;
  height: 44px;
}
.auth-qr-svg {
  width: 38px;
  height: 38px;
}
.auth-seal-caption {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: #94a3b8;
  text-transform: uppercase;
}
.visual-privacy-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  width: 100%;
  max-width: 380px;
}
.privacy-node {
  background-color: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 4px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
  flex: 1;
}
:root[data-theme="dark"] .privacy-node {
  background-color: #171e2b;
  border-color: #2a364a;
}
.privacy-node svg {
  color: var(--landing-accent);
  margin-bottom: 2px;
}
.privacy-node span {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--landing-text-main);
}
.privacy-node small {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--landing-text-muted);
}
.privacy-barrier {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 0 4px;
}
.barrier-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
}
.barrier-text {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: #ef4444;
  font-weight: 600;
  white-space: nowrap;
}
.comparison-section {
  padding: 104px 0;
}
.matrix-card {
  margin-top: 48px;
  border: 1px solid var(--landing-border);
  border-radius: 12px;
  background-color: var(--landing-surface);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  box-shadow: var(--landing-card-shadow);
}
.matrix-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  table-layout: fixed;
}
.matrix-table th {
  padding: 16px 20px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--landing-text-muted);
  font-weight: 600;
  border-bottom: 1px solid var(--landing-border);
  background-color: var(--landing-surface-subtle);
}
.matrix-table td {
  padding: 18px 20px;
  border-bottom: 1px solid var(--landing-border);
  vertical-align: middle;
  font-size: 0.9rem;
}
.matrix-table tr:last-child td {
  border-bottom: none;
}
.col-feature { width: 30%; }
.col-other { width: 22%; }
.col-studio {
  width: 26%;
  background-color: var(--landing-accent-subtle) !important;
  color: var(--landing-accent) !important;
  border-left: 1px solid var(--landing-accent-border);
  border-right: 1px solid var(--landing-accent-border);
  position: relative;
}
.studio-badge {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 3px;
  background-color: var(--landing-accent);
  color: #ffffff;
  font-size: 0.62rem;
  font-family: var(--font-mono);
  margin-right: 6px;
  vertical-align: middle;
}
:root[data-theme="dark"] .studio-badge {
  color: #090d13;
}
.cell-feature {
  vertical-align: middle;
}
.cell-feature strong {
  display: block;
  font-size: 0.94rem;
  color: var(--landing-text-main);
}
.cell-feature span {
  display: block;
  font-size: 0.78rem;
  color: var(--landing-text-muted);
  margin-top: 2px;
}
.cell-con,
.cell-warn,
.cell-pro {
  vertical-align: middle;
  color: var(--landing-text-sub);
}
.cell-con span:not(.status-icon),
.cell-warn span:not(.status-icon),
.cell-pro span:not(.status-icon) {
  display: inline-block;
  vertical-align: middle;
  line-height: 1.35;
}
.cell-pro {
  background-color: var(--landing-accent-subtle);
  border-left: 1px solid var(--landing-accent-border);
  border-right: 1px solid var(--landing-accent-border);
  color: var(--landing-text-main);
}
.status-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  font-size: 0.72rem;
  font-weight: 700;
  vertical-align: middle;
  margin-right: 8px;
  flex-shrink: 0;
}
.status-icon.pro {
  background-color: rgba(22, 163, 74, 0.15);
  color: #16a34a;
}
.status-icon.con {
  background-color: rgba(220, 38, 38, 0.12);
  color: #dc2626;
}
.status-icon.warn {
  background-color: rgba(217, 119, 6, 0.15);
  color: #d97706;
}
.foundry-section {
  padding: 104px 0;
  background-color: var(--landing-surface-subtle);
  border-top: 1px solid var(--landing-border);
  border-bottom: 1px solid var(--landing-border);
}
.foundry-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.foundry-card {
  background-color: var(--landing-surface);
  border: 1px solid var(--landing-border);
  border-radius: 10px;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: all 0.2s ease;
}
.foundry-card:hover {
  border-color: var(--landing-accent);
  transform: translateY(-2px);
  box-shadow: var(--landing-paper-shadow);
}
.foundry-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 16px;
}
.foundry-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--landing-accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 600;
}
.foundry-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--landing-text-main);
}
.foundry-specimen {
  font-size: 1.05rem;
  line-height: 1.55;
  color: var(--landing-text-main);
  margin-bottom: 20px;
  padding: 14px 16px;
  background-color: var(--landing-surface-subtle);
  border-radius: 6px;
  border-left: 3px solid var(--landing-accent);
}
.serif-specimen { font-family: 'EB Garamond', Georgia, serif; }
.sans-specimen { font-family: 'Inter', sans-serif; }
.display-specimen { font-family: 'Playfair Display', Georgia, serif; font-style: italic; }
.mono-specimen { font-family: 'JetBrains Mono', monospace; font-size: 0.88rem; }
.foundry-meta {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--landing-text-muted);
}
.apply-hint {
  color: var(--landing-accent);
  font-weight: 600;
  opacity: 0;
  transition: opacity 0.15s ease;
}
.foundry-card:hover .apply-hint {
  opacity: 1;
}
.specs-section {
  padding: 104px 0;
}
.specs-table-wrap {
  margin-top: 44px;
  border: 1px solid var(--landing-border);
  border-radius: 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  background-color: var(--landing-surface);
}
.specs-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}
.specs-table th {
  padding: 14px 22px;
  background-color: var(--landing-surface-subtle);
  border-bottom: 1px solid var(--landing-border);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--landing-text-muted);
  font-weight: 600;
}
.specs-table td {
  padding: 18px 22px;
  border-bottom: 1px solid var(--landing-border);
  font-size: 0.94rem;
  color: var(--landing-text-sub);
  vertical-align: top;
}
.specs-table tr:last-child td {
  border-bottom: none;
}
.specs-table td:first-child {
  font-weight: 600;
  color: var(--landing-text-main);
  width: 28%;
}
.specs-table code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 2px 6px;
  background-color: var(--landing-surface-subtle);
  border: 1px solid var(--landing-border);
  border-radius: 4px;
  color: var(--landing-text-main);
}
.cta-section {
  padding: 108px 0;
  text-align: center;
  position: relative;
  background-color: var(--landing-surface);
  border-top: 1px solid var(--landing-border);
}
.cta-title {
  font-family: var(--font-editorial);
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  font-weight: 600;
  line-height: 1.18;
  margin-bottom: 18px;
  color: var(--landing-text-main);
}
.cta-desc {
  font-size: 1.15rem;
  color: var(--landing-text-sub);
  max-width: 620px;
  margin: 0 auto 36px;
}
.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
.cta-actions .btn-primary {
  padding: 14px 34px;
  font-size: 1.05rem;
  border-radius: 8px;
}
.faq-section {
  padding: 88px 0 96px;
  background-color: var(--landing-bg);
}
.faq-list {
  margin-top: 48px;
  display: flex;
  flex-direction: column;
}
.faq-item {
  border-bottom: 1px solid var(--landing-border);
  padding: 24px 0;
  transition: border-color var(--transition-fast);
}
.faq-item:first-child {
  border-top: 1px solid var(--landing-border);
}
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-editorial);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--landing-text-main);
  cursor: pointer;
  list-style: none;
  user-select: none;
  gap: 16px;
  line-height: 1.3;
}
.faq-question::-webkit-details-marker {
  display: none;
}
.faq-question::after {
  content: "+";
  font-family: var(--font-ui);
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--landing-text-muted);
  flex-shrink: 0;
  transition: transform var(--transition-fast), color var(--transition-fast);
  line-height: 1;
}
.faq-item[open] .faq-question::after {
  content: "−";
  color: var(--landing-accent);
}
.faq-question:hover {
  color: var(--landing-accent);
}
.faq-answer {
  padding-top: 14px;
  font-size: 0.98rem;
  line-height: 1.68;
  color: var(--landing-text-sub);
  max-width: 680px;
}
.faq-answer p + p {
  margin-top: 10px;
}
.landing-footer {
  padding: 56px 0;
  border-top: 1px solid var(--landing-border);
  background-color: var(--landing-bg);
  font-size: 0.88rem;
  color: var(--landing-text-muted);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}
.footer-left {
  display: flex;
  align-items: center;
  gap: 16px;
}
.footer-brand {
  font-weight: 700;
  color: var(--landing-text-main);
}
.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}
.footer-links a:hover {
  color: var(--landing-text-main);
}
@media (max-width: 900px) {
  .vignettes-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .foundry-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .paper-sheet {
    padding: 36px 28px;
  }
  .paper-header {
    flex-direction: column;
    gap: 16px;
  }
  .paper-contact-block {
    text-align: left;
  }
  .specimen-pin {
    display: none; 
  }
}
@media (max-width: 680px) {
  .container,
  .container-narrow {
    padding: 0 16px;
  }
  .nav-links {
    display: none; 
  }
  .nav-brand-sub {
    display: none; 
  }
  .nav-inner {
    height: 60px;
  }
  .hero-section {
    padding: 40px 0 32px;
  }
  .hero-eyebrow {
    font-size: 0.68rem;
    padding: 4px 10px;
    max-width: 100%;
    white-space: normal;
    text-align: center;
    line-height: 1.4;
    margin-bottom: 18px;
  }
  .hero-title {
    font-size: clamp(1.85rem, 7.5vw, 2.35rem);
    line-height: 1.18;
    letter-spacing: -0.02em;
    word-break: normal;
    overflow-wrap: break-word;
  }
  .hero-desc {
    font-size: 1rem;
    line-height: 1.55;
    margin-bottom: 28px;
  }
  .hero-cta-group {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }
  .hero-cta-group .btn-primary,
  .hero-cta-group .btn-secondary {
    width: 100%;
    justify-content: center;
  }
  .hero-meta-strip {
    flex-direction: column;
    gap: 10px;
    margin-bottom: 36px;
  }
  .specimen-stage {
    padding: 12px 0;
  }
  .specimen-toolbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 10px;
  }
  .specimen-preset-chips,
  .specimen-toggles {
    width: 100%;
    justify-content: flex-start;
  }
  .preset-chip {
    font-size: 0.72rem;
    padding: 4px 10px;
  }
  .toggle-tool-btn {
    font-size: 0.7rem;
    padding: 4px 8px;
  }
  .din-markers {
    display: none;
  }
  .specimen-wrapper {
    padding: 24px 10px 16px;
    border-radius: 8px;
    box-sizing: border-box;
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
  }
  .paper-sheet {
    padding: 22px 16px;
    min-height: auto;
    font-size: 8.5pt;
    line-height: 1.48;
    border-radius: 4px;
    box-sizing: border-box;
    width: 100%;
    max-width: 100%;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    overflow: hidden;
  }
  .paper-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding-bottom: 14px;
    margin-bottom: 16px;
  }
  .paper-brand {
    gap: 10px;
  }
  .paper-logo {
    width: 32px;
    height: 32px;
  }
  .paper-org-name {
    font-size: 10.5pt;
    letter-spacing: 0.01em;
    line-height: 1.25;
  }
  .paper-org-tagline {
    font-size: 7.5pt;
    line-height: 1.35;
  }
  .paper-contact-block {
    text-align: left;
    font-size: 7.5pt;
    line-height: 1.4;
    color: #64748b;
  }
  .paper-meta-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    font-size: 8pt;
    margin-bottom: 16px;
  }
  .paper-meta-ref {
    font-size: 7.5pt;
    word-break: break-all;
  }
  .paper-recipient {
    font-size: 8.5pt;
    line-height: 1.4;
    margin-bottom: 16px;
  }
  .paper-recipient strong {
    font-size: 9pt;
  }
  .paper-subject {
    font-size: 9.5pt;
    line-height: 1.35;
    margin-bottom: 14px;
    word-break: break-word;
  }
  .paper-body {
    font-size: 8.5pt;
    line-height: 1.5;
    margin-bottom: 18px;
  }
  .paper-body p {
    font-size: 8.5pt;
    line-height: 1.5;
    margin-bottom: 10px;
  }
  .paper-body p:nth-child(3),
  .paper-body p:nth-child(4) {
    display: none;
  }
  .paper-signoff {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding-top: 14px;
    gap: 10px;
  }
  .paper-signature-img {
    height: 28px;
    margin-bottom: 2px;
  }
  .paper-signer-name {
    font-size: 8.5pt;
  }
  .paper-signer-title {
    font-size: 7.5pt;
  }
  .paper-seal-img {
    width: 42px;
    height: 42px;
  }
  .paper-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    font-size: 7pt;
    margin-top: 16px;
    padding-top: 10px;
    line-height: 1.35;
  }
  .specs-table td:first-child {
    width: 35%;
  }
  .matrix-table {
    min-width: 580px;
  }
  .matrix-table th,
  .matrix-table td {
    padding: 12px 14px;
    font-size: 0.82rem;
  }
  .vignette-preview {
    height: 190px;
    padding: 14px;
  }
  .visual-envelope-stage {
    transform: scale(0.88);
  }
  .visual-pages-stack {
    transform: scale(0.88);
  }
  .visual-auth-card {
    padding: 12px 14px;
  }
  .visual-privacy-diagram {
    transform: scale(0.88);
  }
  .foundry-card {
    padding: 20px 18px;
  }
  .foundry-specimen {
    font-size: 0.95rem;
    padding: 10px 12px;
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
}