:root {
  --color-paper: #ffffff;
  --color-ink: #0a0a0a;
  --color-muted: #4b5563;
  --color-line: #e5e7eb;
  --color-soft: #f8fafc;
  --color-accent: #111111;
  --color-accent-soft: #f3f4f6;

  --r-background-color: var(--color-paper);
  --r-main-color: var(--color-ink);
  --r-heading-color: var(--color-ink);
  --r-link-color: var(--color-accent);
  --r-link-color-dark: var(--color-ink);
  --r-selection-background-color: var(--color-accent);
  --r-selection-color: var(--color-paper);
}

body {
  font-family: "Avenir Next", Avenir, "Segoe UI", sans-serif;
  color: var(--color-ink);
}

.reveal-viewport {
  background:
    radial-gradient(circle at top right, rgba(17, 17, 17, 0.03), transparent 30%),
    linear-gradient(180deg, #ffffff 0%, #fbfbfc 100%);
}

.reveal {
  font-size: 170%;
}

.reveal .slides {
  text-align: left;
}

.reveal .slides > section {
  top: 0 !important;
  transform: none !important;
  justify-content: flex-start !important;
  align-items: flex-start !important;
  padding: 1.6rem 0 2.5rem;
  min-height: 100%;
}

.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4 {
  color: var(--color-ink);
  letter-spacing: -0.03em;
  text-transform: none;
}

.reveal h1 {
  font-size: 3.4rem;
  margin-bottom: 0.8rem;
}

.reveal h2 {
  font-size: 2.25rem;
  margin-bottom: 1rem;
}

.reveal h3 {
  font-size: 1.25rem;
  margin-bottom: 0.7rem;
}

.reveal p,
.reveal li,
.reveal blockquote {
  color: var(--color-muted);
}

.reveal strong {
  color: var(--color-ink);
}

.reveal a {
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-thickness: 0.14em;
  text-underline-offset: 0.16em;
}

.reveal ul,
.reveal ol {
  display: block;
  margin-left: 1.1em;
}

.reveal li {
  margin-bottom: 0.35em;
}

.reveal blockquote {
  width: 100%;
  margin: 1.3rem 0 0;
  padding: 1rem 1.2rem;
  border: 1px solid var(--color-line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: none;
}

.reveal img {
  border: 0;
  box-shadow: none;
  background: transparent;
}

.reveal .progress span {
  background: var(--color-ink);
}

.reveal .controls {
  display: none !important;
}

.reveal .slide-number {
  display: none !important;
}

.slide-header,
.slide-footer {
  position: fixed;
  left: 0;
  right: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1.25rem;
  color: var(--color-muted);
}

.slide-header {
  top: 0;
  height: 62px;
  border-bottom: 1px solid var(--color-line);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
}

.slide-footer {
  bottom: 0;
  height: 40px;
  border-top: 1px solid var(--color-line);
  background: rgba(255, 255, 255, 0.92);
  font-size: 0.9rem;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-lockup img {
  height: 30px;
  width: auto;
}

.brand-lockup .brand-text {
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-ink);
}

.slide-footer a {
  color: var(--color-muted);
}

.footer-meta {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.title-slide {
  justify-content: center !important;
  align-items: flex-start !important;
  padding-top: 6rem !important;
}

.hero-mark {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
  margin: 4rem 0 2rem;
}

.title-logo {
  width: 230px;
  max-width: 42vw;
}

.hero-kicker {
  max-width: 760px;
  font-size: 1.2rem;
  color: var(--color-muted);
}

.card-grid {
  display: grid;
  gap: 1rem;
  width: 100%;
  margin-top: 1rem;
}

.two-up {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.three-up {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.compact .info-card {
  min-height: 0;
}

.info-card {
  padding: 1.15rem 1.2rem;
  border: 1px solid var(--color-line);
  border-radius: 20px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(248, 250, 252, 0.96) 100%);
  min-height: 11rem;
}

.info-card p,
.info-card li {
  font-size: 0.95rem;
}

.card-note {
  margin-top: 0.8rem;
  font-weight: 600;
  color: var(--color-ink) !important;
}

.split-callout {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1rem;
  width: 100%;
  align-items: stretch;
  margin-top: 1.2rem;
}

.flow-box {
  padding: 1.2rem;
  border: 1px solid var(--color-line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.95);
}

.flow-box p {
  margin: 0.55rem 0;
  color: var(--color-muted);
}

.flow-box.emphasized {
  border-color: #d1d5db;
  background: var(--color-accent-soft);
}

.flow-arrow {
  display: flex;
  align-items: center;
  font-size: 2.4rem;
  color: var(--color-ink);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  width: 100%;
  margin: 1rem 0 1.2rem;
}

.timeline-step {
  padding: 1.1rem 1.15rem;
  border: 1px solid var(--color-line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.94);
}

.timeline-step p {
  font-size: 0.95rem;
}

.qrcode-inline {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  margin-top: 1rem;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--color-line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.96);
}

.qrcode-inline svg {
  width: 76px;
  height: 76px;
}

.qrcode-link {
  font-size: 0.78rem;
  line-height: 1.4;
}

@media (max-width: 1100px) {
  .reveal {
    font-size: 145%;
  }

  .three-up,
  .timeline {
    grid-template-columns: 1fr;
  }

  .two-up,
  .split-callout {
    grid-template-columns: 1fr;
  }

  .flow-arrow {
    justify-content: center;
    transform: rotate(90deg);
  }
}