:root {
  --bg: oklch(98.5% 0.005 95);
  --surface: oklch(100% 0.002 95);
  --fg: oklch(22% 0.018 70);
  --muted: oklch(44% 0.014 70);
  --border: oklch(90% 0.007 95);
  --accent: oklch(38% 0.08 155);
  --accent-soft: oklch(94% 0.02 155);
  --success: oklch(48% 0.1 150);
  --warn: oklch(55% 0.12 75);
  --danger: oklch(48% 0.14 25);
  --font-display: "Iowan Old Style", "Charter", "Palatino Linotype", Georgia, serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, monospace;
  --radius: 10px;
  --shadow: 0 18px 40px oklch(22% 0.02 70 / 0.08);
  --max: 1120px;
  --nav-h: 72px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: auto; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.55;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
button, input, select, textarea { font: inherit; color: inherit; }
h1, h2, h3, .display {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0;
}
p { margin: 0 0 1em; max-width: 65ch; }
.muted { color: var(--muted); }
.wrap {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}
.page { display: none; min-height: calc(100vh - var(--nav-h)); }
.page.is-active { display: block; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--nav-h);
  background: color-mix(in oklch, var(--surface) 86%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}
.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--fg);
  color: var(--surface);
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  text-decoration: none;
  padding: 0.65rem 0.9rem;
  border-radius: 8px;
  color: var(--muted);
  font-weight: 510;
  letter-spacing: 0.01em;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.nav-links a:hover,
.nav-links a.is-current {
  color: var(--fg);
  background: oklch(96% 0.004 95);
}
.nav-cta {
  text-decoration: none !important;
  background: var(--fg) !important;
  color: var(--surface) !important;
  padding: 0.7rem 1.1rem !important;
  border-radius: 999px !important;
  font-weight: 550 !important;
  letter-spacing: 0.02em;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.nav-cta:hover { opacity: 0.9; }
.menu-toggle {
  display: none;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 8px;
  min-width: 44px;
  min-height: 44px;
  cursor: pointer;
}
.hero {
  padding: 4.5rem 0 3.5rem;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3rem;
  align-items: center;
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
  font-weight: 510;
}
.hero h1 {
  font-size: clamp(2.4rem, 4.6vw, 3.6rem);
  max-width: 14ch;
  margin-bottom: 1.1rem;
}
.hero-lead {
  font-size: 1.12rem;
  color: var(--muted);
  max-width: 38ch;
  margin-bottom: 1.75rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0.75rem 1.35rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 550;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s cubic-bezier(0.23, 1, 0.32, 1), background 0.15s, border-color 0.15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--fg);
  color: var(--surface);
  box-shadow: 0 8px 20px oklch(22% 0.02 70 / 0.12);
}
.btn-primary:hover { background: oklch(16% 0.02 70); }
.btn-secondary {
  background: var(--surface);
  border-color: var(--border);
  color: var(--fg);
}
.btn-secondary:hover { border-color: var(--fg); }
.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 1.75rem;
  color: var(--muted);
  font-size: 0.92rem;
}
.trust-row strong {
  display: block;
  color: var(--fg);
  font-weight: 550;
  font-variant-numeric: tabular-nums;
}
.stage-3d {
  perspective: 1400px;
  min-height: 420px;
  display: grid;
  place-items: center;
  position: relative;
}
.stage-3d::before {
  content: "";
  position: absolute;
  inset: 18% 12% 8%;
  background: radial-gradient(ellipse at center, oklch(92% 0.02 155 / 0.55), transparent 70%);
  z-index: 0;
  pointer-events: none;
}
.book-stack {
  position: relative;
  width: min(100%, 360px);
  height: 380px;
  transform-style: preserve-3d;
  animation: floatY 7s ease-in-out infinite;
  z-index: 1;
}
@keyframes floatY {
  0%, 100% { transform: translateY(0) rotateX(8deg) rotateY(-18deg); }
  50% { transform: translateY(-10px) rotateX(10deg) rotateY(-14deg); }
}
.book3d {
  position: absolute;
  width: 168px;
  height: 236px;
  transform-style: preserve-3d;
  transition: transform 0.45s cubic-bezier(0.23, 1, 0.32, 1);
}
.book3d:nth-child(1) { left: 18px; top: 48px; z-index: 3; }
.book3d:nth-child(2) { left: 96px; top: 24px; z-index: 2; transform: translateZ(-30px) rotateY(8deg); }
.book3d:nth-child(3) { left: 168px; top: 72px; z-index: 1; transform: translateZ(-60px) rotateY(16deg); }
.book3d:hover { transform: translateY(-12px) rotateY(-8deg) scale(1.03); z-index: 5; }
.book-face {
  position: absolute;
  inset: 0;
  border-radius: 3px 8px 8px 3px;
  background:
    linear-gradient(90deg, oklch(20% 0.02 70 / 0.18) 0 6px, transparent 6px),
    linear-gradient(160deg, var(--c1), var(--c2));
  box-shadow: var(--shadow);
  color: oklch(98% 0.01 95);
  padding: 1.2rem 1rem 1rem 1.35rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  backface-visibility: hidden;
}
.book-face .series {
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.8;
}
.book-face .title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.book-face .meta {
  font-size: 0.78rem;
  opacity: 0.85;
}
.book3d.b1 { --c1: oklch(34% 0.06 155); --c2: oklch(28% 0.04 155); }
.book3d.b2 { --c1: oklch(36% 0.05 70); --c2: oklch(28% 0.04 50); }
.book3d.b3 { --c1: oklch(32% 0.04 240); --c2: oklch(24% 0.03 240); }
.section {
  padding: 4rem 0;
}
.section-tight { padding: 2.5rem 0; }
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 1rem;
  margin-bottom: 2rem;
}
.section-head h2 {
  font-size: clamp(1.7rem, 3vw, 2.25rem);
  max-width: 18ch;
}
.section-head p {
  color: var(--muted);
  margin: 0;
  max-width: 32ch;
  text-align: right;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem;
  transition: border-color 0.2s, transform 0.2s cubic-bezier(0.23, 1, 0.32, 1);
}
.card:hover {
  border-color: color-mix(in oklch, var(--fg) 25%, var(--border));
  transform: translateY(-2px);
}
.card h3 {
  font-size: 1.2rem;
  margin: 0.85rem 0 0.45rem;
  letter-spacing: -0.015em;
}
.card p {
  color: var(--muted);
  margin: 0;
  font-size: 0.98rem;
}
.icon-line {
  width: 28px;
  height: 28px;
  color: var(--fg);
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.35rem;
}
.product-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s cubic-bezier(0.23, 1, 0.32, 1), box-shadow 0.25s;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.product-visual {
  height: 220px;
  background: oklch(96% 0.008 95);
  display: grid;
  place-items: center;
  perspective: 900px;
  border-bottom: 1px solid var(--border);
}
.mini-book {
  width: 108px;
  height: 152px;
  border-radius: 2px 7px 7px 2px;
  transform: rotateY(-18deg) rotateX(6deg);
  box-shadow: 14px 18px 30px oklch(22% 0.02 70 / 0.16);
  background:
    linear-gradient(90deg, oklch(15% 0.02 70 / 0.22) 0 5px, transparent 5px),
    linear-gradient(155deg, var(--c1), var(--c2));
  color: oklch(98% 0.01 95);
  padding: 0.9rem 0.7rem 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.35s cubic-bezier(0.23, 1, 0.32, 1);
}
.product-card:hover .mini-book {
  transform: rotateY(-8deg) rotateX(2deg) translateY(-6px);
}
.mini-book span {
  font-family: var(--font-display);
  font-size: 0.92rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.mini-book small {
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  opacity: 0.8;
}
.product-body { padding: 1.15rem 1.2rem 1.3rem; flex: 1; display: flex; flex-direction: column; }
.product-body .tag {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.45rem;
}
.product-body h3 {
  font-size: 1.15rem;
  margin: 0 0 0.4rem;
}
.product-body p {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0 0 1rem;
  flex: 1;
}
.price-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}
.price {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}
.price small {
  display: block;
  font-weight: 400;
  color: var(--muted);
  font-size: 0.78rem;
}
.chip {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: oklch(96% 0.006 95);
  border: 1px solid var(--border);
  font-size: 0.78rem;
  color: var(--muted);
}
.band {
  background: var(--fg);
  color: var(--surface);
  border-radius: calc(var(--radius) + 4px);
  padding: 2.25rem 2rem;
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 1.5rem;
  align-items: center;
}
.band h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.1rem);
  margin-bottom: 0.6rem;
  color: var(--surface);
}
.band p {
  color: oklch(90% 0.01 95);
  margin: 0;
}
.band .btn-primary {
  background: var(--surface);
  color: var(--fg);
  box-shadow: none;
}
.quote-block {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 3rem 0;
  text-align: center;
}
.quote-block blockquote {
  margin: 0 auto;
  max-width: 36ch;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
}
.quote-block cite {
  display: block;
  margin-top: 1rem;
  font-style: normal;
  color: var(--muted);
  font-size: 0.95rem;
}
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  counter-reset: step;
}
.step {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
}
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  display: block;
  margin-bottom: 0.8rem;
}
.step h3 {
  font-size: 1.15rem;
  margin-bottom: 0.4rem;
}
.step p {
  color: var(--muted);
  margin: 0;
  font-size: 0.96rem;
}
.page-hero {
  padding: 3rem 0 1.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}
.page-hero h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 0.6rem;
}
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.filter-btn {
  min-height: 40px;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: pointer;
  color: var(--muted);
  letter-spacing: 0.01em;
}
.filter-btn.is-active,
.filter-btn:hover {
  border-color: var(--fg);
  color: var(--fg);
}
.product-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2.5rem;
  align-items: start;
  padding-bottom: 3rem;
}
.product-stage {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 2px);
  min-height: 460px;
  display: grid;
  place-items: center;
  perspective: 1200px;
  position: sticky;
  top: calc(var(--nav-h) + 1rem);
}
.big-book {
  width: 210px;
  height: 300px;
  transform-style: preserve-3d;
  transform: rotateY(-22deg) rotateX(8deg);
  transition: transform 0.5s cubic-bezier(0.23, 1, 0.32, 1);
  cursor: grab;
}
.big-book:hover {
  transform: rotateY(-8deg) rotateX(4deg) translateY(-8px);
}
.big-book .cover {
  width: 100%;
  height: 100%;
  border-radius: 3px 10px 10px 3px;
  background:
    linear-gradient(90deg, oklch(15% 0.02 70 / 0.25) 0 8px, transparent 8px),
    linear-gradient(155deg, var(--c1), var(--c2));
  box-shadow: 24px 28px 50px oklch(22% 0.02 70 / 0.18);
  color: oklch(98% 0.01 95);
  padding: 1.6rem 1.2rem 1.2rem 1.6rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.big-book .cover .series {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.85;
}
.big-book .cover .title {
  font-family: var(--font-display);
  font-size: 1.7rem;
  line-height: 1.12;
  letter-spacing: -0.025em;
}
.product-info .tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.7rem;
}
.product-info h1 {
  font-size: clamp(1.9rem, 3.5vw, 2.5rem);
  margin-bottom: 0.8rem;
}
.product-info .lead {
  color: var(--muted);
  font-size: 1.08rem;
  margin-bottom: 1.4rem;
}
.price-lg {
  font-size: 1.8rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}
.price-note {
  color: var(--muted);
  font-size: 0.92rem;
  margin-bottom: 1.4rem;
}
.feature-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.6rem;
}
.feature-list li {
  display: flex;
  gap: 0.7rem;
  padding: 0.55rem 0;
  border-top: 1px solid var(--border);
  color: var(--muted);
}
.feature-list li:last-child { border-bottom: 1px solid var(--border); }
.feature-list svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  margin-top: 0.2rem;
  color: var(--fg);
}
.formats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.format-opt {
  min-height: 44px;
  padding: 0.55rem 0.95rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: pointer;
}
.format-opt.is-active {
  border-color: var(--fg);
  background: var(--fg);
  color: var(--surface);
}
.contact-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 2rem;
  padding-bottom: 3rem;
}
.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
}
.contact-card h2 {
  font-size: 1.4rem;
  margin-bottom: 0.6rem;
}
.contact-list {
  list-style: none;
  padding: 0;
  margin: 1.2rem 0 0;
}
.contact-list li {
  padding: 0.75rem 0;
  border-top: 1px solid var(--border);
  display: grid;
  gap: 0.15rem;
}
.contact-list span {
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}
.contact-list a, .contact-list strong {
  font-weight: 550;
  text-decoration: none;
}
.form {
  display: grid;
  gap: 0.9rem;
}
.form label {
  display: grid;
  gap: 0.35rem;
  font-weight: 510;
  font-size: 0.95rem;
}
.form input,
.form select,
.form textarea {
  min-height: 48px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  padding: 0.7rem 0.9rem;
}
.form textarea { min-height: 120px; resize: vertical; }
.form input:focus,
.form select:focus,
.form textarea:focus {
  outline: 2px solid color-mix(in oklch, var(--fg) 35%, transparent);
  outline-offset: 1px;
}
.form-note {
  font-size: 0.88rem;
  color: var(--muted);
  margin: 0;
}
.form-success {
  display: none;
  padding: 1rem 1.1rem;
  border-radius: 8px;
  background: var(--accent-soft);
  border: 1px solid color-mix(in oklch, var(--accent) 25%, var(--border));
  color: var(--fg);
}
.form-success.is-visible { display: block; }
.legal-page {
  padding-bottom: 4rem;
}
.legal-page h1 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 1rem;
}
.legal-page h2 {
  font-size: 1.25rem;
  margin: 1.8rem 0 0.6rem;
}
.legal-page p, .legal-page li {
  color: var(--muted);
}
.legal-page ul {
  padding-left: 1.2rem;
  max-width: 65ch;
}
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 3rem 0 1.5rem;
  margin-top: 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
.footer-grid h3 {
  font-family: var(--font-body);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.9rem;
  font-weight: 550;
}
.footer-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.45rem;
}
.footer-grid a {
  text-decoration: none;
  color: var(--fg);
}
.footer-grid a:hover { text-decoration: underline; }
.footer-brand p {
  color: var(--muted);
  font-size: 0.95rem;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.1rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  color: var(--muted);
  font-size: 0.88rem;
}
.cookie-banner {
  position: fixed;
  left: 1rem;
  right: 1rem;
  bottom: 1rem;
  z-index: 60;
  max-width: 520px;
  margin-left: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 1.1rem 1.2rem;
  display: none;
}
.cookie-banner.is-visible { display: block; }
.cookie-banner p {
  font-size: 0.92rem;
  color: var(--muted);
  margin: 0 0 0.9rem;
  max-width: none;
}
.cookie-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}
@media (max-width: 900px) {
  .hero,
  .product-layout,
  .contact-grid,
  .band,
  .footer-grid,
  .grid-3,
  .product-grid,
  .steps {
    grid-template-columns: 1fr;
  }
  .section-head {
    flex-direction: column;
    align-items: start;
  }
  .section-head p { text-align: left; }
  .product-stage { position: static; min-height: 340px; }
  .nav-links {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 0.75rem;
    display: none;
  }
  .nav-links.is-open { display: flex; }
  .menu-toggle { display: inline-grid; place-items: center; }
  .nav-cta { width: 100%; justify-content: center; }
}
@media (max-width: 640px) {
  .wrap { width: min(100% - 1.5rem, var(--max)); }
  .hero { padding-top: 2.5rem; gap: 2rem; }
  .book-stack { height: 300px; width: 280px; }
  .book3d { width: 130px; height: 184px; }
  .product-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .book-stack { animation: none; }
  .btn, .product-card, .mini-book, .big-book, .card { transition: none; }
}

.page-content { display: block; min-height: calc(100vh - var(--nav-h)); }
.hero-photo {
  position: absolute;
  inset: 8% 6% 10%;
  width: auto;
  height: auto;
  max-width: none;
  width: 88%;
  height: 84%;
  object-fit: cover;
  border-radius: 18px;
  box-shadow: var(--shadow);
  z-index: 1;
  filter: saturate(0.92) contrast(1.02);
}
.stage-3d.has-photo .book-stack { z-index: 2; transform: translate(18%, 12%) scale(0.72); }
.stage-3d.has-photo::before { opacity: 0.35; }
.product-visual {
  position: relative;
  overflow: hidden;
}
.product-visual .product-shot {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: 12px 12px 0 0;
}
.product-visual .mini-book {
  position: absolute;
  right: 0.85rem;
  bottom: 0.85rem;
  width: 42%;
  box-shadow: 0 12px 28px oklch(22% 0.02 70 / 0.22);
}
.product-stage-photo {
  width: min(100%, 420px);
  border-radius: 16px;
  box-shadow: var(--shadow);
  margin-bottom: 1.25rem;
  aspect-ratio: 4/3;
  object-fit: cover;
}
.contact-aside-photo {
  width: 100%;
  border-radius: 14px;
  aspect-ratio: 16/10;
  object-fit: cover;
  margin-top: 1.25rem;
}
@media (max-width: 860px) {
  .stage-3d.has-photo .book-stack { transform: translate(0, 8%) scale(0.78); }
  .hero-photo { inset: 10% 8% 18%; width: 84%; height: 72%; }
}