/* ==========================================================================
   Ayvoro — Layered Scroll Chapters · Layout 87
   Premium Japanese automobile · Osaka Nakanoshima
   Dark premium + muted luxury · Copper/amber accent
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens
   -------------------------------------------------------------------------- */
:root {
  --av-obsidian: #0D0B09;
  --av-obsidian-deep: #070605;
  --av-surface: #1A1612;
  --av-surface-raised: #221C17;
  --av-surface-glass: rgba(26, 22, 18, 0.78);
  --av-copper: #C4893A;
  --av-copper-light: #E8B86D;
  --av-copper-glow: rgba(196, 137, 58, 0.42);
  --av-copper-dim: rgba(196, 137, 58, 0.16);
  --av-copper-faint: rgba(196, 137, 58, 0.07);
  --av-parchment: #F2EBE0;
  --av-parchment-muted: #B8A898;
  --av-muted: #8A7E72;
  --av-muted-dim: rgba(138, 126, 114, 0.55);
  --av-ink: #0D0B09;
  --av-line: rgba(242, 235, 224, 0.08);
  --av-line-strong: rgba(196, 137, 58, 0.32);
  --av-overlay-dark: rgba(13, 11, 9, 0.82);
  --av-overlay-veil: rgba(13, 11, 9, 0.58);
  --av-danger: #E05A4A;
  --av-success: #6BB88A;
  --av-font-display: 'Cormorant Garamond', 'Yu Mincho', 'Hiragino Mincho ProN', serif;
  --av-font-body: 'DM Sans', 'Hiragino Sans', 'Noto Sans JP', sans-serif;
  --av-font-micro: 'Space Grotesk', 'SF Pro Text', sans-serif;
  --av-nav-h: 68px;
  --av-ribbon-h: 52px;
  --av-content-max: 1280px;
  --av-chapter-pad: clamp(64px, 9vw, 112px);
  --av-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --av-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --av-ease-snap: cubic-bezier(0.65, 0, 0.35, 1);
  --av-transition: 0.5s var(--av-ease);
  --av-shadow-soft: 0 28px 72px rgba(0, 0, 0, 0.58);
  --av-shadow-copper: 0 0 40px var(--av-copper-glow), 0 16px 48px rgba(0, 0, 0, 0.48);
  --av-shadow-nav: 0 12px 40px rgba(0, 0, 0, 0.45), inset 0 -1px 0 rgba(196, 137, 58, 0.12);
  --av-layer-progress: 0;
  --av-shear-shift-x: 0px;
  --av-shear-shift-y: 0px;
  color-scheme: dark;
}

[data-theme="light"] {
  --av-obsidian: #F5F0E8;
  --av-obsidian-deep: #EBE4D8;
  --av-surface: #FFFFFF;
  --av-surface-raised: #FAF7F2;
  --av-surface-glass: rgba(255, 255, 255, 0.86);
  --av-parchment: #1A1612;
  --av-parchment-muted: #4A4238;
  --av-muted: #6B6258;
  --av-muted-dim: rgba(107, 98, 88, 0.65);
  --av-ink: #0D0B09;
  --av-line: rgba(26, 22, 18, 0.1);
  --av-line-strong: rgba(196, 137, 58, 0.45);
  --av-overlay-dark: rgba(245, 240, 232, 0.94);
  --av-overlay-veil: rgba(245, 240, 232, 0.78);
  --av-copper: #A8722E;
  --av-copper-light: #C4893A;
  --av-copper-glow: rgba(168, 114, 46, 0.28);
  --av-copper-dim: rgba(168, 114, 46, 0.14);
  --av-copper-faint: rgba(168, 114, 46, 0.06);
  --av-shadow-soft: 0 24px 56px rgba(26, 22, 18, 0.1);
  --av-shadow-copper: 0 0 28px rgba(168, 114, 46, 0.2), 0 12px 32px rgba(26, 22, 18, 0.08);
  --av-shadow-nav: 0 8px 32px rgba(26, 22, 18, 0.08), inset 0 -1px 0 rgba(196, 137, 58, 0.2);
  color-scheme: light;
}

/* --------------------------------------------------------------------------
   2. Reset & base
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body.av-body {
  font-family: var(--av-font-body);
  font-weight: 400;
  font-size: 15px;
  line-height: 1.75;
  color: var(--av-parchment);
  background: var(--av-obsidian);
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.av-search-open,
body.av-menu-open {
  overflow: hidden;
}

img, video, svg, iframe {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--av-copper-light);
  text-decoration: none;
  transition: color 0.25s ease, opacity 0.25s ease;
}

a:hover {
  color: var(--av-parchment);
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

address {
  font-style: normal;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--av-font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: 0.015em;
}

h1 { font-size: clamp(2.4rem, 5.5vw, 4rem); }
h2 { font-size: clamp(1.85rem, 3.8vw, 2.75rem); }
h3 { font-size: clamp(1.2rem, 2.2vw, 1.55rem); }

h1 em, h2 em {
  font-style: italic;
  color: var(--av-copper-light);
}

::selection {
  background: var(--av-copper-dim);
  color: var(--av-parchment);
}

:focus-visible {
  outline: 2px solid var(--av-copper);
  outline-offset: 3px;
}

:focus:not(:focus-visible) {
  outline: none;
}

/* --------------------------------------------------------------------------
   3. Utilities
   -------------------------------------------------------------------------- */
.av-micro {
  font-family: var(--av-font-micro);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--av-muted);
}

.visually-hidden,
.av-skip:not(:focus) {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.av-skip:focus {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 9999;
  width: auto;
  height: auto;
  padding: 12px 20px;
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
  background: var(--av-surface);
  border: 1px solid var(--av-copper);
  color: var(--av-parchment);
  font-size: 13px;
}

.av-link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--av-muted);
  transition: color 0.25s, gap 0.25s var(--av-ease);
}

.av-link-arrow::after {
  content: '→';
  color: var(--av-copper);
  transition: transform 0.25s var(--av-ease);
}

.av-link-arrow:hover {
  color: var(--av-parchment);
  gap: 12px;
}

.av-link-arrow:hover::after {
  transform: translateX(4px);
}

.is-hidden {
  display: none !important;
}

/* --------------------------------------------------------------------------
   4. Buttons
   -------------------------------------------------------------------------- */
.av-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  font-family: var(--av-font-micro);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: 2px;
  transition: background 0.35s var(--av-ease), color 0.35s, border-color 0.35s,
              box-shadow 0.35s, transform 0.25s var(--av-ease);
  white-space: nowrap;
}

.av-btn:hover {
  transform: translateY(-2px);
}

.av-btn:active {
  transform: translateY(0);
}

.av-btn--copper {
  background: linear-gradient(135deg, var(--av-copper) 0%, var(--av-copper-light) 100%);
  color: var(--av-ink);
  border-color: var(--av-copper);
  box-shadow: 0 4px 24px var(--av-copper-dim);
}

.av-btn--copper:hover {
  background: var(--av-copper-light);
  border-color: var(--av-copper-light);
  color: var(--av-ink);
  box-shadow: var(--av-shadow-copper);
}

.av-btn--ghost {
  background: transparent;
  color: var(--av-parchment);
  border-color: var(--av-line);
}

.av-btn--ghost:hover {
  border-color: var(--av-copper);
  color: var(--av-copper-light);
  background: var(--av-copper-faint);
}

.av-btn--outline {
  background: transparent;
  color: var(--av-copper-light);
  border-color: var(--av-line-strong);
}

.av-btn--outline:hover {
  background: var(--av-copper-faint);
  border-color: var(--av-copper);
  box-shadow: 0 0 24px var(--av-copper-dim);
}

.av-btn--lg {
  padding: 17px 34px;
  font-size: 12px;
}

.av-btn--sm {
  padding: 9px 18px;
  font-size: 10px;
}

/* --------------------------------------------------------------------------
   5. Layout shell
   -------------------------------------------------------------------------- */
.av-main {
  flex: 1;
  width: 100%;
}

.page-home .av-main {
  padding-top: 0;
  padding-bottom: var(--av-ribbon-h);
}

.page-about .av-main,
.page-shop .av-main,
.page-faq .av-main,
.page-contact .av-main,
.page-cart .av-main,
.page-privacy .av-main,
.page-terms .av-main,
.page-disclaimer .av-main,
.page-cookies .av-main {
  padding-top: calc(var(--av-nav-h) + 32px);
}

/* --------------------------------------------------------------------------
   6. Reveal animations
   -------------------------------------------------------------------------- */
.av-reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.85s var(--av-ease-out), transform 0.85s var(--av-ease-out);
}

.av-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.av-reveal:nth-child(2) { transition-delay: 0.1s; }
.av-reveal:nth-child(3) { transition-delay: 0.18s; }
.av-reveal:nth-child(4) { transition-delay: 0.26s; }

/* --------------------------------------------------------------------------
   7. Chapter ribbon — bottom horizontal nav
   -------------------------------------------------------------------------- */
.av-chapter-ribbon {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 450;
  height: var(--av-ribbon-h);
  display: flex;
  align-items: stretch;
  background: var(--av-surface-glass);
  backdrop-filter: blur(18px) saturate(1.3);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  border-top: 1px solid var(--av-line);
  box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.35);
  transition: height 0.35s var(--av-ease);
}

.av-chapter-ribbon.is-compact {
  height: 44px;
}

.av-chapter-ribbon__track {
  flex: 1;
  display: flex;
  align-items: stretch;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 0 clamp(8px, 2vw, 20px);
}

.av-chapter-ribbon__track::-webkit-scrollbar {
  display: none;
}

.av-chapter-ribbon__tab {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 6px 14px;
  min-width: 72px;
  border-right: 1px solid var(--av-line);
  color: var(--av-muted);
  transition: color 0.25s, background 0.25s;
}

.av-chapter-ribbon__tab:first-child {
  border-left: 1px solid var(--av-line);
}

.av-chapter-ribbon__tab:hover,
.av-chapter-ribbon__tab.is-active {
  color: var(--av-copper-light);
  background: var(--av-copper-faint);
}

.av-chapter-ribbon__num {
  font-family: var(--av-font-micro);
  font-size: 9px;
  letter-spacing: 0.12em;
}

.av-chapter-ribbon__label {
  font-family: var(--av-font-micro);
  font-size: 8px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.85;
}

.av-chapter-ribbon.is-compact .av-chapter-ribbon__label {
  display: none;
}

.av-chapter-ribbon__progress {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--av-line);
  pointer-events: none;
}

.av-chapter-ribbon__fill {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--av-copper), var(--av-copper-light));
  box-shadow: 0 0 12px var(--av-copper-glow);
  transition: width 0.12s linear;
}

.av-chapter-ribbon__readout {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  padding: 0 20px;
  font-family: var(--av-font-micro);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--av-copper);
  border-left: 1px solid var(--av-line);
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   8. Edge nav — sticky top bar with diagonal shear
   -------------------------------------------------------------------------- */
.av-edge-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  height: var(--av-nav-h);
  padding: 0 clamp(16px, 4vw, 40px);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.45s var(--av-ease), border-color 0.45s,
              box-shadow 0.45s, backdrop-filter 0.45s;
}

.av-edge-nav::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--av-copper-dim) 20%, var(--av-copper) 50%, var(--av-copper-dim) 80%, transparent);
  opacity: 0;
  transition: opacity 0.45s;
}

.av-edge-nav.is-scrolled {
  background: var(--av-surface-glass);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom-color: var(--av-line);
  box-shadow: var(--av-shadow-nav);
}

.av-edge-nav.is-scrolled::after {
  opacity: 1;
}

.av-edge-nav__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--av-parchment);
  flex-shrink: 0;
}

.av-edge-nav__brand:hover {
  color: var(--av-parchment);
  opacity: 0.88;
}

.av-edge-nav__glyph {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--av-font-display);
  font-size: 20px;
  color: var(--av-copper-light);
  background: var(--av-copper-faint);
  border: 1px solid var(--av-line-strong);
  clip-path: polygon(0 0, 100% 0, 100% 75%, 85% 100%, 0 100%);
  box-shadow: 0 0 20px var(--av-copper-dim);
}

.av-edge-nav__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.av-edge-nav__text strong {
  font-family: var(--av-font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.av-edge-nav__text em {
  font-family: var(--av-font-micro);
  font-size: 9px;
  font-style: normal;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--av-muted);
}

.av-edge-nav__links {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  margin-left: auto;
}

.av-edge-nav__link {
  font-family: var(--av-font-micro);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--av-muted);
  padding: 8px 0;
  position: relative;
  transition: color 0.25s;
}

.av-edge-nav__link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 4px;
  height: 4px;
  background: var(--av-copper);
  border-radius: 50%;
  transform: translateX(-50%) scale(0);
  transition: transform 0.3s var(--av-ease);
  box-shadow: 0 0 8px var(--av-copper-glow);
}

.av-edge-nav__link:hover,
.av-edge-nav__link.is-active {
  color: var(--av-parchment);
}

.av-edge-nav__link:hover::before,
.av-edge-nav__link.is-active::before {
  transform: translateX(-50%) scale(1);
}

.av-edge-nav__tools {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: clamp(8px, 1.5vw, 20px);
}

.av-tool-btn {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 2px;
  color: var(--av-muted);
  border: 1px solid transparent;
  transition: color 0.25s, background 0.25s, border-color 0.25s;
}

.av-tool-btn:hover {
  color: var(--av-copper-light);
  background: var(--av-copper-faint);
  border-color: var(--av-line);
}

.av-icon-sun { display: none; }
.av-icon-moon { display: block; }

[data-theme="light"] .av-icon-sun { display: block; }
[data-theme="light"] .av-icon-moon { display: none; }

.av-cart-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 2px;
  background: var(--av-copper-faint);
  border: 1px solid var(--av-line-strong);
  color: var(--av-parchment);
  font-family: var(--av-font-micro);
  font-size: 11px;
  clip-path: polygon(8% 0, 100% 0, 100% 100%, 0 100%, 0 25%);
  transition: background 0.25s, box-shadow 0.25s;
}

.av-cart-chip:hover {
  background: var(--av-copper-dim);
  box-shadow: 0 0 20px var(--av-copper-dim);
  color: var(--av-parchment);
}

.av-cart-chip span {
  min-width: 18px;
  text-align: center;
  color: var(--av-copper-light);
  font-weight: 500;
}

.av-menu-trigger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  padding: 8px;
  border: 1px solid var(--av-line);
  border-radius: 2px;
}

.av-menu-trigger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--av-parchment);
  transition: transform 0.3s var(--av-ease), opacity 0.3s;
}

.av-menu-trigger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.av-menu-trigger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.av-menu-trigger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   9. Search veil
   -------------------------------------------------------------------------- */
.av-search-veil {
  position: fixed;
  inset: 0;
  z-index: 800;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: calc(var(--av-nav-h) + 56px);
  pointer-events: none;
  visibility: hidden;
  opacity: 0;
  transition: visibility 0.4s, opacity 0.4s;
}

.av-search-veil.is-open {
  pointer-events: auto;
  visibility: visible;
  opacity: 1;
}

.av-search-veil__backdrop {
  position: absolute;
  inset: 0;
  background: var(--av-overlay-veil);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.av-search-veil__sheet {
  position: relative;
  z-index: 2;
  width: min(calc(100% - 40px), 680px);
  padding: 36px;
  background: var(--av-surface);
  border: 1px solid var(--av-line-strong);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  box-shadow: var(--av-shadow-soft);
  transform: translateY(-24px) scale(0.98);
  transition: transform 0.5s var(--av-ease-out);
}

.av-search-veil.is-open .av-search-veil__sheet {
  transform: translateY(0) scale(1);
}

.av-search-veil__form {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.av-search-veil__form input {
  flex: 1;
  padding: 15px 20px;
  background: var(--av-obsidian);
  border: 1px solid var(--av-line);
  border-radius: 2px;
  font-size: 15px;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.av-search-veil__form input:focus {
  border-color: var(--av-copper);
  box-shadow: 0 0 0 3px var(--av-copper-dim);
  outline: none;
}

.av-search-veil__hints {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
  font-size: 12px;
  color: var(--av-muted);
}

.av-search-veil__hints button {
  padding: 5px 14px;
  border-radius: 2px;
  border: 1px solid var(--av-line);
  font-family: var(--av-font-micro);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--av-muted);
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.av-search-veil__hints button:hover {
  border-color: var(--av-copper);
  color: var(--av-copper-light);
  background: var(--av-copper-faint);
}

/* --------------------------------------------------------------------------
   10. Slide menu
   -------------------------------------------------------------------------- */
.av-slide-menu {
  position: fixed;
  inset: 0;
  z-index: 750;
  pointer-events: none;
  visibility: hidden;
}

.av-slide-menu.is-open {
  pointer-events: auto;
  visibility: visible;
}

.av-slide-menu__backdrop {
  position: absolute;
  inset: 0;
  background: var(--av-overlay-dark);
  opacity: 0;
  transition: opacity 0.4s;
}

.av-slide-menu.is-open .av-slide-menu__backdrop {
  opacity: 1;
}

.av-slide-menu__panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(340px, 90vw);
  height: 100%;
  padding: calc(var(--av-nav-h) + 28px) 32px 36px;
  background: var(--av-surface);
  border-left: 1px solid var(--av-line-strong);
  clip-path: polygon(24px 0, 100% 0, 100% 100%, 0 100%);
  display: flex;
  flex-direction: column;
  gap: 2px;
  transform: translateX(100%);
  transition: transform 0.5s var(--av-ease-out);
  overflow-y: auto;
}

.av-slide-menu.is-open .av-slide-menu__panel {
  transform: translateX(0);
}

.av-slide-menu__panel > a {
  display: block;
  padding: 16px 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--av-parchment);
  border-bottom: 1px solid var(--av-line);
  transition: color 0.2s, padding-left 0.3s var(--av-ease);
}

.av-slide-menu__panel > a:hover {
  color: var(--av-copper-light);
  padding-left: 10px;
}

.av-slide-menu__meta {
  margin-top: auto;
  padding-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 13px;
  color: var(--av-muted);
}

.av-slide-menu__meta a {
  font-family: var(--av-font-micro);
  font-size: 14px;
  color: var(--av-copper);
}

/* --------------------------------------------------------------------------
   11. Layer world & scroll chapters
   -------------------------------------------------------------------------- */
.av-layer-world {
  position: relative;
  width: 100%;
}

.page-home {
  scroll-snap-type: y proximity;
}

.av-scroll-chapter {
  min-height: 100vh;
  min-height: 100dvh;
  scroll-snap-align: start;
  scroll-snap-stop: normal;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--av-chapter-pad) clamp(20px, 5vw, 56px);
  padding-top: calc(var(--av-chapter-pad) + var(--av-nav-h) * 0.3);
  border-bottom: 1px solid var(--av-line);
  --layer-progress: 0;
  opacity: calc(0.72 + var(--layer-progress) * 0.28);
  transform: translateY(calc((1 - var(--layer-progress)) * 24px));
  transition: opacity 0.1s linear, transform 0.1s linear;
}

.av-scroll-chapter:nth-child(odd) {
  background: linear-gradient(175deg, var(--av-obsidian) 0%, var(--av-obsidian-deep) 55%, var(--av-surface) 100%);
}

.av-scroll-chapter:nth-child(even) {
  background: linear-gradient(185deg, var(--av-surface) 0%, var(--av-obsidian) 100%);
}

.av-scroll-chapter--pinned {
  min-height: auto;
  padding-bottom: 0;
}

/* --------------------------------------------------------------------------
   12. Ch.01 · Lens
   -------------------------------------------------------------------------- */
.av-lens {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  max-width: var(--av-content-max);
  margin-inline: auto;
  width: 100%;
  min-height: calc(100vh - var(--av-nav-h) - var(--av-ribbon-h));
  overflow: hidden;
}

.av-lens__ghost {
  position: absolute;
  top: -8%;
  right: -4%;
  font-family: var(--av-font-display);
  font-size: clamp(8rem, 22vw, 18rem);
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(196, 137, 58, 0.12);
  pointer-events: none;
  z-index: 1;
  opacity: calc(0.3 + var(--layer-progress, 0) * 0.5);
}

.av-lens__shear-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--av-copper-faint) 0%, transparent 45%);
  clip-path: polygon(0 0, 100% 0, 100% 65%, 0 85%);
  z-index: 0;
}

.av-lens__layer {
  position: relative;
  z-index: 2;
}

.av-lens__layer--back {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.av-lens__layer--back img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.45;
  filter: saturate(0.85) contrast(1.05);
  transform: scale(calc(1 + var(--layer-progress, 0) * 0.06));
  transition: transform 0.15s linear;
}

.av-lens__layer--mid {
  display: flex;
  align-items: center;
  min-height: inherit;
  padding: clamp(32px, 6vw, 64px);
  z-index: 2;
}

.av-lens__glass {
  max-width: 560px;
  padding: clamp(28px, 4vw, 44px);
  background: var(--av-surface-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--av-line);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
  box-shadow: var(--av-shadow-soft);
}

.av-lens__lead {
  margin-top: 16px;
  font-size: 16px;
  color: var(--av-parchment-muted);
  max-width: 44ch;
}

.av-lens__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.av-lens__layer--front {
  position: absolute;
  bottom: clamp(24px, 4vw, 48px);
  right: clamp(20px, 4vw, 48px);
  z-index: 3;
}

.av-lens__stats {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 20px;
  background: var(--av-obsidian);
  border: 1px solid var(--av-line-strong);
  font-family: var(--av-font-micro);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--av-muted);
  clip-path: polygon(12px 0, 100% 0, 100% 100%, 0 100%, 0 12px);
}

.av-lens__stats strong {
  display: block;
  font-family: var(--av-font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--av-copper-light);
  letter-spacing: 0;
  text-transform: none;
}

/* --------------------------------------------------------------------------
   13. Ch.02 · Stratum
   -------------------------------------------------------------------------- */
.av-stratum {
  max-width: var(--av-content-max);
  margin-inline: auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.av-stratum__head {
  grid-column: 1 / -1;
  max-width: 640px;
}

.av-stratum__head p {
  margin-bottom: 8px;
}

.av-stratum__sheets {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.av-stratum__sheet {
  position: relative;
  padding: clamp(24px, 3vw, 36px);
  background: var(--av-surface);
  border: 1px solid var(--av-line);
  margin-top: -12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  transition: transform 0.4s var(--av-ease), box-shadow 0.4s;
}

.av-stratum__sheet--1 {
  z-index: 3;
  transform: rotate(-0.5deg);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}

.av-stratum__sheet--2 {
  z-index: 2;
  margin-left: 16px;
  transform: rotate(0.4deg);
  background: var(--av-surface-raised);
}

.av-stratum__sheet--3 {
  z-index: 1;
  margin-left: 32px;
  transform: rotate(-0.3deg);
}

.av-stratum__sheet:hover {
  transform: rotate(0deg) translateY(-4px);
  box-shadow: var(--av-shadow-soft);
  z-index: 4;
}

.av-stratum__sheet-num {
  font-family: var(--av-font-display);
  font-size: 28px;
  font-style: italic;
  color: var(--av-copper-dim);
  display: block;
  margin-bottom: 8px;
}

.av-stratum__sheet h3 {
  margin-bottom: 10px;
}

.av-stratum__sheet p {
  color: var(--av-parchment-muted);
  font-size: 14px;
}

.av-stratum__sheet .av-link-arrow {
  margin-top: 16px;
}

.av-stratum__visual {
  position: sticky;
  top: calc(var(--av-nav-h) + 24px);
  align-self: start;
}

.av-stratum__visual img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border: 1px solid var(--av-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
  box-shadow: var(--av-shadow-soft);
}

.av-stratum__visual figcaption {
  margin-top: 12px;
}

/* --------------------------------------------------------------------------
   14. Ch.03 · Prism
   -------------------------------------------------------------------------- */
.av-prism {
  max-width: var(--av-content-max);
  margin-inline: auto;
  width: 100%;
}

.av-prism__head {
  max-width: 560px;
  margin-bottom: 32px;
}

.av-prism__head p:last-child {
  margin-top: 12px;
  color: var(--av-parchment-muted);
}

.av-prism__controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--av-line);
}

.av-prism__tab {
  padding: 10px 20px;
  font-family: var(--av-font-micro);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--av-muted);
  border: 1px solid var(--av-line);
  border-radius: 2px;
  transition: color 0.25s, border-color 0.25s, background 0.25s;
}

.av-prism__tab:hover,
.av-prism__tab.is-active {
  color: var(--av-copper-light);
  border-color: var(--av-copper);
  background: var(--av-copper-faint);
}

.av-prism__stage {
  position: relative;
  min-height: 380px;
}

.av-prism__panel {
  display: none;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2.5vw, 28px);
}

.av-prism__panel.is-active {
  display: grid;
  animation: avPrismIn 0.5s var(--av-ease-out);
}

@keyframes avPrismIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.av-prism__card {
  background: var(--av-surface);
  border: 1px solid var(--av-line);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  transition: transform 0.35s var(--av-ease), box-shadow 0.35s;
  animation: avCardReveal 0.6s var(--av-ease-out) var(--prism-delay, 0s) both;
}

@keyframes avCardReveal {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.av-prism__card:hover {
  transform: translateY(-6px);
  box-shadow: var(--av-shadow-copper);
}

.av-prism__card-img img {
  width: 100%;
  aspect-ratio: 3/2;
  object-fit: cover;
}

.av-prism__card-data {
  padding: 18px 20px;
}

.av-prism__val {
  display: block;
  font-family: var(--av-font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--av-copper-light);
  line-height: 1;
}

.av-prism__val em {
  font-style: normal;
  font-family: var(--av-font-micro);
  font-size: 14px;
  color: var(--av-muted);
  margin-left: 4px;
}

.av-prism__car {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--av-parchment-muted);
}

/* --------------------------------------------------------------------------
   15. Ch.04 · Fleet
   -------------------------------------------------------------------------- */
.av-fleet {
  max-width: 100%;
  width: 100%;
}

.av-fleet__head {
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 56px);
  margin-bottom: 28px;
}

.av-fleet__hint {
  margin-top: 8px;
  font-family: var(--av-font-micro);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--av-copper);
}

.av-fleet__track {
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
  cursor: grab;
  padding: 8px 0 24px;
}

.av-fleet__track::-webkit-scrollbar {
  display: none;
}

.av-fleet__track.is-dragging {
  cursor: grabbing;
  user-select: none;
}

.av-fleet__rail {
  display: flex;
  gap: clamp(16px, 2.5vw, 24px);
  padding-inline: clamp(20px, 5vw, 56px);
  width: max-content;
}

.av-fleet__cell {
  flex-shrink: 0;
  width: clamp(280px, 32vw, 380px);
  background: var(--av-surface);
  border: 1px solid var(--av-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  transition: transform 0.35s var(--av-ease), box-shadow 0.35s;
}

.av-fleet__cell:hover {
  transform: translateY(-8px) rotate(-0.3deg);
  box-shadow: var(--av-shadow-soft);
}

.av-fleet__cell-img {
  position: relative;
  overflow: hidden;
}

.av-fleet__cell-img img {
  width: 100%;
  aspect-ratio: 5/3.4;
  object-fit: cover;
  transition: transform 0.5s var(--av-ease);
}

.av-fleet__cell:hover .av-fleet__cell-img img {
  transform: scale(1.05);
}

.av-fleet__tag {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  font-family: var(--av-font-micro);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: var(--av-obsidian);
  border: 1px solid var(--av-copper);
  color: var(--av-copper-light);
}

.av-fleet__cell-body {
  padding: 18px 20px;
}

.av-fleet__cell-body h3 {
  margin-bottom: 6px;
}

.av-fleet__price {
  font-family: var(--av-font-micro);
  font-size: 12px;
  color: var(--av-copper);
  letter-spacing: 0.06em;
}

.av-fleet__cta {
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 56px);
  margin-top: 24px;
}

/* --------------------------------------------------------------------------
   16. Ch.05 · Chronicle
   -------------------------------------------------------------------------- */
.av-chronicle {
  max-width: var(--av-content-max);
  margin-inline: auto;
  width: 100%;
}

.av-chronicle__head {
  margin-bottom: 40px;
  max-width: 520px;
}

.av-chronicle__stack {
  position: relative;
  min-height: 480px;
}

.av-chronicle__layer {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(20px, 3vw, 40px);
  align-items: center;
  padding: clamp(24px, 3vw, 36px);
  background: var(--av-surface);
  border: 1px solid var(--av-line);
  margin-bottom: -80px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
  transform: translateX(calc(var(--layer-index, 0) * 12px)) rotate(calc(var(--layer-index, 0) * 0.3deg - 0.6deg));
  transition: transform 0.4s var(--av-ease), z-index 0s;
  z-index: calc(10 - var(--layer-index, 0));
}

.av-chronicle__layer:last-child {
  margin-bottom: 0;
}

.av-chronicle__layer:hover {
  transform: translateX(calc(var(--layer-index, 0) * 12px + 8px)) rotate(0deg) translateY(-8px);
  z-index: 20;
  box-shadow: var(--av-shadow-soft);
}

.av-chronicle__layer-img img {
  width: 100%;
  aspect-ratio: 5/3.5;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}

.av-chronicle__layer-text time {
  font-family: var(--av-font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--av-copper-dim);
  display: block;
  margin-bottom: 8px;
}

.av-chronicle__layer-text h3 {
  margin-bottom: 10px;
}

.av-chronicle__layer-text p {
  color: var(--av-parchment-muted);
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   17. Ch.06 · Shear
   -------------------------------------------------------------------------- */
.av-shear {
  max-width: var(--av-content-max);
  margin-inline: auto;
  width: 100%;
  position: relative;
}

.av-shear__head {
  max-width: 520px;
  margin-bottom: 36px;
}

.av-shear__head p {
  margin-top: 10px;
  color: var(--av-parchment-muted);
}

.av-shear__mosaic {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(16px, 2.5vw, 28px);
}

.av-shear__tile {
  position: relative;
  overflow: hidden;
  margin: 0;
  transform: translate(var(--shear-shift-x, 0), var(--shear-shift-y, 0)) rotate(var(--shear-angle, 0deg));
  transition: transform 0.35s var(--av-ease), box-shadow 0.35s;
  clip-path: polygon(0 8%, 100% 0, 100% 92%, 0 100%);
  border: 1px solid var(--av-line);
}

.av-shear__tile:nth-child(even) {
  clip-path: polygon(0 0, 100% 8%, 100% 100%, 0 92%);
  margin-top: 24px;
}

.av-shear__tile:hover {
  box-shadow: var(--av-shadow-copper);
  z-index: 2;
}

.av-shear__tile img {
  width: 100%;
  aspect-ratio: 5/4;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.08);
  transition: filter 0.4s, transform 0.5s var(--av-ease);
}

.av-shear__tile:hover img {
  filter: saturate(1.1) contrast(1.12);
  transform: scale(1.04);
}

.av-shear__tile figcaption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 14px 18px;
  background: linear-gradient(transparent, var(--av-overlay-dark));
  font-family: var(--av-font-micro);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--av-parchment);
}

.av-shear__distort {
  position: absolute;
  inset: -20%;
  pointer-events: none;
  z-index: -1;
  opacity: 0.15;
}

.av-shear__distort span {
  position: absolute;
  width: 40%;
  height: 1px;
  background: var(--av-copper);
  transform-origin: left center;
}

.av-shear__distort span:nth-child(1) { top: 30%; left: 10%; transform: rotate(-12deg); }
.av-shear__distort span:nth-child(2) { top: 55%; left: 20%; transform: rotate(8deg); }
.av-shear__distort span:nth-child(3) { top: 75%; left: 5%; transform: rotate(-5deg); }

/* --------------------------------------------------------------------------
   18. Ch.07 · Ledger (pinned scroll)
   -------------------------------------------------------------------------- */
.av-ledger {
  max-width: var(--av-content-max);
  margin-inline: auto;
  width: 100%;
}

.av-scroll-chapter--pinned .av-ledger {
  padding-bottom: 40vh;
}

.av-ledger__pin {
  position: sticky;
  top: var(--av-nav-h);
  z-index: 10;
  padding: 24px 0 20px;
  background: linear-gradient(180deg, var(--av-obsidian) 60%, transparent);
}

.av-ledger__head {
  max-width: 480px;
  margin-bottom: 20px;
}

.av-ledger__progress {
  height: 3px;
  background: var(--av-line);
  border-radius: 2px;
  overflow: hidden;
}

.av-ledger__progress-fill {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--av-copper), var(--av-copper-light));
  box-shadow: 0 0 12px var(--av-copper-glow);
  transition: width 0.1s linear;
}

.av-ledger__steps {
  display: flex;
  flex-direction: column;
  gap: clamp(48px, 8vh, 96px);
  padding-top: 48px;
}

.av-ledger__step {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
  opacity: 0.35;
  transform: translateY(24px);
  transition: opacity 0.5s var(--av-ease), transform 0.5s var(--av-ease);
}

.av-ledger__step.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.av-ledger__step:nth-child(even) {
  grid-template-columns: 0.9fr 1.1fr;
}

.av-ledger__step:nth-child(even) .av-ledger__step-img {
  order: 2;
}

.av-ledger__step-img img {
  width: 100%;
  aspect-ratio: 3/2;
  object-fit: cover;
  border: 1px solid var(--av-line);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  box-shadow: var(--av-shadow-soft);
}

.av-ledger__step-num {
  font-family: var(--av-font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--av-copper-dim);
  display: block;
  line-height: 1;
  margin-bottom: 12px;
}

.av-ledger__step-text h3 {
  margin-bottom: 10px;
}

.av-ledger__step-text p {
  color: var(--av-parchment-muted);
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   19. Ch.08 · Echo
   -------------------------------------------------------------------------- */
.av-echo {
  max-width: var(--av-content-max);
  margin-inline: auto;
  width: 100%;
}

.av-echo__head {
  margin-bottom: 36px;
  max-width: 480px;
}

.av-echo__slider {
  position: relative;
  min-height: 280px;
}

.av-echo__track {
  position: relative;
}

.av-echo__slide {
  display: none;
  padding: clamp(32px, 4vw, 48px);
  background: var(--av-surface);
  border: 1px solid var(--av-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
  box-shadow: var(--av-shadow-soft);
}

.av-echo__slide.is-active {
  display: block;
  animation: avEchoFade 0.6s var(--av-ease-out);
}

@keyframes avEchoFade {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.av-echo__slide p {
  font-family: var(--av-font-display);
  font-size: clamp(1.2rem, 2.5vw, 1.65rem);
  font-style: italic;
  line-height: 1.55;
  color: var(--av-parchment);
  margin-bottom: 24px;
}

.av-echo__slide footer {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.av-echo__slide cite {
  font-style: normal;
  font-weight: 600;
  font-size: 15px;
}

.av-echo__slide footer span {
  font-family: var(--av-font-micro);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--av-muted);
  text-transform: uppercase;
}

.av-echo__nav {
  display: flex;
  gap: 10px;
  margin-top: 24px;
}

.av-echo__dot {
  width: 32px;
  height: 4px;
  background: var(--av-line);
  border-radius: 2px;
  transition: background 0.3s, width 0.3s var(--av-ease);
}

.av-echo__dot.is-active {
  width: 48px;
  background: var(--av-copper);
  box-shadow: 0 0 10px var(--av-copper-glow);
}

/* --------------------------------------------------------------------------
   20. Ch.09 · Telemetry
   -------------------------------------------------------------------------- */
.av-telemetry {
  max-width: var(--av-content-max);
  margin-inline: auto;
  width: 100%;
}

.av-telemetry__head {
  margin-bottom: 32px;
}

.av-telemetry__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(12px, 2vw, 20px);
  margin-bottom: 48px;
}

.av-telemetry__cell {
  padding: clamp(20px, 3vw, 28px);
  background: var(--av-surface);
  border: 1px solid var(--av-line);
  text-align: center;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.av-telemetry__cell:hover {
  border-color: var(--av-copper-dim);
  box-shadow: 0 0 24px var(--av-copper-faint);
}

.av-telemetry__val {
  display: block;
  font-family: var(--av-font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--av-copper-light);
  line-height: 1;
}

.av-telemetry__val em {
  font-style: normal;
  font-family: var(--av-font-micro);
  font-size: 14px;
  color: var(--av-muted);
}

.av-telemetry__label {
  display: block;
  margin-top: 10px;
  font-family: var(--av-font-micro);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--av-muted);
}

.av-telemetry__featured {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2.5vw, 24px);
}

.av-telemetry__card {
  background: var(--av-surface);
  border: 1px solid var(--av-line);
  overflow: hidden;
  transition: transform 0.35s var(--av-ease), box-shadow 0.35s;
}

.av-telemetry__card:hover {
  transform: translateY(-6px);
  box-shadow: var(--av-shadow-soft);
}

.av-telemetry__card img {
  width: 100%;
  aspect-ratio: 10/7;
  object-fit: cover;
}

.av-telemetry__card-body {
  padding: 18px 20px;
}

.av-telemetry__card-body h3 {
  margin: 8px 0;
  font-size: 1.1rem;
}

.av-telemetry__price {
  display: block;
  font-family: var(--av-font-micro);
  font-size: 13px;
  color: var(--av-copper);
  margin-bottom: 14px;
}

/* --------------------------------------------------------------------------
   21. Ch.10 · Departure
   -------------------------------------------------------------------------- */
.av-departure {
  position: relative;
  max-width: var(--av-content-max);
  margin-inline: auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(32px, 5vw, 56px);
  align-items: center;
  min-height: 60vh;
  overflow: hidden;
}

.av-departure__layers {
  position: absolute;
  inset: -10%;
  pointer-events: none;
  z-index: 0;
}

.av-departure__layer {
  position: absolute;
  inset: 10%;
  border: 1px solid var(--av-copper-dim);
  opacity: 0.2;
}

.av-departure__layer--1 {
  transform: rotate(-3deg) translate(-4%, -2%);
  clip-path: polygon(0 0, 100% 0, 100% 85%, 0 100%);
}

.av-departure__layer--2 {
  transform: rotate(2deg) translate(3%, 1%);
  clip-path: polygon(0 10%, 100% 0, 100% 100%, 0 90%);
}

.av-departure__layer--3 {
  transform: rotate(-1deg);
  opacity: 0.1;
}

.av-departure__content {
  position: relative;
  z-index: 2;
}

.av-departure__content p:not(.av-micro) {
  margin-top: 16px;
  color: var(--av-parchment-muted);
  max-width: 42ch;
}

.av-departure__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.av-departure__trust {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--av-line);
}

.av-departure__trust span {
  font-family: var(--av-font-micro);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--av-muted);
}

.av-departure__trust span::before {
  content: '◆ ';
  color: var(--av-copper);
  font-size: 6px;
}

.av-departure__visual {
  position: relative;
  z-index: 2;
  margin: 0;
}

.av-departure__visual img {
  width: 100%;
  aspect-ratio: 7/5;
  object-fit: cover;
  clip-path: polygon(16px 0, 100% 0, 100% 100%, 0 calc(100% - 16px));
  border: 1px solid var(--av-line-strong);
  box-shadow: var(--av-shadow-copper);
}

/* --------------------------------------------------------------------------
   22. Page hero (inner pages)
   -------------------------------------------------------------------------- */
.av-page-hero {
  position: relative;
  padding: clamp(48px, 8vw, 88px) clamp(20px, 5vw, 56px);
  margin-bottom: clamp(32px, 5vw, 56px);
  overflow: hidden;
}

.av-page-hero__shear {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--av-copper-faint) 0%, transparent 50%);
  clip-path: polygon(0 0, 100% 0, 100% 70%, 0 100%);
  pointer-events: none;
}

.av-page-hero__content {
  position: relative;
  max-width: var(--av-content-max);
  margin-inline: auto;
  max-width: 640px;
}

.av-page-hero__content p:not(.av-micro) {
  margin-top: 14px;
  color: var(--av-parchment-muted);
}

.av-page-hero--shop { border-bottom: 1px solid var(--av-line); }
.av-page-hero--about { background: linear-gradient(180deg, var(--av-surface) 0%, transparent 100%); }
.av-page-hero--faq { background: linear-gradient(180deg, var(--av-obsidian-deep) 0%, transparent 100%); }
.av-page-hero--contact { background: linear-gradient(180deg, var(--av-surface) 0%, transparent 100%); }
.av-page-hero--cart { background: linear-gradient(180deg, var(--av-obsidian-deep) 0%, transparent 100%); }

/* --------------------------------------------------------------------------
   23. About page
   -------------------------------------------------------------------------- */
.av-about-narrative {
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding: 0 clamp(20px, 5vw, 56px) clamp(48px, 7vw, 80px);
}

.av-about-narrative__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}

.av-about-narrative__visual {
  position: relative;
  margin: 0;
}

.av-about-narrative__visual img {
  width: 100%;
  aspect-ratio: 8/5;
  object-fit: cover;
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
  border: 1px solid var(--av-line);
}

.av-about-narrative__layer {
  position: absolute;
  inset: 12px;
  border: 1px solid var(--av-copper-dim);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  pointer-events: none;
}

.av-about-narrative__copy h2 {
  margin-bottom: 20px;
}

.av-about-narrative__copy p {
  color: var(--av-parchment-muted);
  margin-bottom: 16px;
  font-size: 15px;
}

.av-about-mission {
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding: clamp(48px, 7vw, 80px) clamp(20px, 5vw, 56px);
  background: var(--av-surface);
  border-block: 1px solid var(--av-line);
}

.av-about-mission__panel {
  max-width: 720px;
  margin-inline: auto;
  text-align: center;
}

.av-about-mission__panel h2 {
  margin: 12px 0 20px;
}

.av-about-mission__lead {
  font-family: var(--av-font-display);
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  font-style: italic;
  color: var(--av-copper-light);
  margin-bottom: 20px;
}

.av-about-mission__panel p:last-child {
  color: var(--av-parchment-muted);
}

.av-about-values {
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding: clamp(48px, 7vw, 80px) clamp(20px, 5vw, 56px);
}

.av-about-values__title {
  text-align: center;
  margin-bottom: 40px;
}

.av-about-values__row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(16px, 2.5vw, 24px);
}

.av-value-strata {
  padding: clamp(24px, 3vw, 32px);
  background: var(--av-surface);
  border: 1px solid var(--av-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  transition: transform 0.35s var(--av-ease), box-shadow 0.35s;
}

.av-value-strata:hover {
  transform: translateY(-6px);
  box-shadow: var(--av-shadow-soft);
  border-color: var(--av-copper-dim);
}

.av-value-strata__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  font-family: var(--av-font-display);
  font-size: 22px;
  color: var(--av-copper-light);
  background: var(--av-copper-faint);
  border: 1px solid var(--av-line-strong);
  margin-bottom: 16px;
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
}

.av-value-strata h3 {
  margin-bottom: 10px;
}

.av-value-strata p {
  font-size: 13px;
  color: var(--av-parchment-muted);
  line-height: 1.65;
}

.av-about-timeline {
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding: clamp(48px, 7vw, 80px) clamp(20px, 5vw, 56px);
}

.av-about-timeline__title {
  margin-bottom: 40px;
}

.av-timeline-strata {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.av-timeline-strata__node {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: clamp(24px, 4vw, 40px);
  padding: clamp(24px, 3vw, 36px);
  background: var(--av-surface);
  border: 1px solid var(--av-line);
  margin-bottom: -24px;
  transform: translateX(calc(var(--node-i, 0) * 8px));
  transition: transform 0.35s var(--av-ease), box-shadow 0.35s;
  z-index: calc(10 - var(--node-i, 0));
}

.av-timeline-strata__node:last-child {
  margin-bottom: 0;
}

.av-timeline-strata__node:hover {
  transform: translateX(calc(var(--node-i, 0) * 8px + 12px)) translateY(-4px);
  box-shadow: var(--av-shadow-soft);
  z-index: 20;
}

.av-timeline-strata__img img {
  width: 100%;
  aspect-ratio: 4/2.8;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

.av-timeline-strata__year {
  font-family: var(--av-font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--av-copper);
  display: block;
  margin-bottom: 8px;
}

.av-timeline-strata__body h3 {
  margin-bottom: 8px;
}

.av-timeline-strata__body p {
  font-size: 14px;
  color: var(--av-parchment-muted);
}

.av-about-location {
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding: clamp(48px, 7vw, 80px) clamp(20px, 5vw, 56px);
  border-top: 1px solid var(--av-line);
}

.av-about-location__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 56px);
  align-items: center;
}

.av-about-location__copy h2 {
  margin-bottom: 20px;
}

.av-about-location__copy address {
  margin-bottom: 16px;
  line-height: 1.8;
  color: var(--av-parchment-muted);
}

.av-about-location__copy p {
  color: var(--av-parchment-muted);
  margin-bottom: 12px;
  font-size: 14px;
}

.av-about-location__copy .av-btn {
  margin-top: 20px;
}

.av-about-location__visual img {
  width: 100%;
  aspect-ratio: 3/2;
  object-fit: cover;
  clip-path: polygon(16px 0, 100% 0, 100% 100%, 0 calc(100% - 16px));
  border: 1px solid var(--av-line);
}

.av-about-cta {
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding: clamp(56px, 8vw, 96px) clamp(20px, 5vw, 56px);
  text-align: center;
  background: linear-gradient(180deg, var(--av-surface) 0%, var(--av-obsidian) 100%);
  border-top: 1px solid var(--av-line);
}

.av-about-cta h2 {
  margin-bottom: 12px;
}

.av-about-cta p {
  color: var(--av-parchment-muted);
  margin-bottom: 28px;
}

.av-about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

/* --------------------------------------------------------------------------
   24. Shop page
   -------------------------------------------------------------------------- */
.av-shop-filter {
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding: 0 clamp(20px, 5vw, 56px) 24px;
}

.av-shop-filter__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--av-line);
}

.av-shop-filter__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.av-filter-chip {
  padding: 8px 16px;
  font-family: var(--av-font-micro);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--av-muted);
  border: 1px solid var(--av-line);
  border-radius: 2px;
  transition: color 0.25s, border-color 0.25s, background 0.25s;
}

.av-filter-chip:hover,
.av-filter-chip.is-active {
  color: var(--av-copper-light);
  border-color: var(--av-copper);
  background: var(--av-copper-faint);
}

.av-shop-filter__sort {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.av-shop-filter__sort select {
  padding: 10px 14px;
  background: var(--av-surface);
  border: 1px solid var(--av-line);
  border-radius: 2px;
  font-family: var(--av-font-micro);
  font-size: 11px;
  cursor: pointer;
}

.av-shop-filter__sort select:focus {
  border-color: var(--av-copper);
  outline: none;
}

.av-shop-filter__count {
  margin-top: 12px;
  font-family: var(--av-font-micro);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--av-muted);
}

.av-shop-mosaic {
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding: clamp(24px, 4vw, 40px) clamp(20px, 5vw, 56px);
}

.av-shop-mosaic__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 3vw, 32px);
}

.av-shop-tile {
  background: var(--av-surface);
  border: 1px solid var(--av-line);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: transform 0.35s var(--av-ease), box-shadow 0.35s;
}

.av-shop-tile:hover {
  transform: translateY(-6px);
  box-shadow: var(--av-shadow-soft);
}

.av-shop-tile.is-hidden {
  display: none;
}

.av-shop-tile__visual {
  position: relative;
  margin: 0;
  overflow: hidden;
}

.av-shop-tile__visual img {
  width: 100%;
  aspect-ratio: 3/2;
  object-fit: cover;
  transition: transform 0.5s var(--av-ease);
}

.av-shop-tile:hover .av-shop-tile__visual img {
  transform: scale(1.04);
}

.av-shop-tile__badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  font-family: var(--av-font-micro);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--av-obsidian);
  border: 1px solid var(--av-copper);
  color: var(--av-copper-light);
}

.av-shop-tile__wish {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--av-obsidian);
  border: 1px solid var(--av-line);
  color: var(--av-muted);
  transition: color 0.25s, border-color 0.25s, background 0.25s;
}

.av-shop-tile__wish:hover,
.av-shop-tile__wish.is-wished {
  color: var(--av-copper-light);
  border-color: var(--av-copper);
  background: var(--av-copper-faint);
}

.av-shop-tile__wish.is-wished svg {
  fill: var(--av-copper);
}

.av-shop-tile__body {
  padding: 20px 22px 24px;
}

.av-shop-tile__body h3 {
  margin: 8px 0 10px;
}

.av-shop-tile__story {
  font-size: 13px;
  color: var(--av-parchment-muted);
  line-height: 1.65;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.av-shop-tile__specs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.av-shop-tile__specs li {
  padding: 4px 10px;
  font-family: var(--av-font-micro);
  font-size: 9px;
  letter-spacing: 0.08em;
  background: var(--av-obsidian);
  border: 1px solid var(--av-line);
  color: var(--av-muted);
}

.av-shop-tile__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--av-line);
}

.av-shop-tile__price {
  font-family: var(--av-font-micro);
  font-size: 13px;
  color: var(--av-copper);
  letter-spacing: 0.04em;
}

.av-shop-empty {
  text-align: center;
  padding: 48px 24px;
  color: var(--av-muted);
  font-size: 15px;
}

.av-shop-empty a {
  color: var(--av-copper-light);
}

.av-shop-process {
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding: clamp(48px, 7vw, 72px) clamp(20px, 5vw, 56px);
  border-top: 1px solid var(--av-line);
}

.av-shop-process h2 {
  margin-bottom: 32px;
  text-align: center;
}

.av-shop-process__steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(16px, 2.5vw, 24px);
}

.av-shop-process__steps article {
  padding: 24px 20px;
  background: var(--av-surface);
  border: 1px solid var(--av-line);
  text-align: center;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

.av-shop-process__steps article span {
  font-family: var(--av-font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--av-copper-dim);
  display: block;
  margin-bottom: 12px;
}

.av-shop-process__steps article h3 {
  margin-bottom: 8px;
  font-size: 1rem;
}

.av-shop-process__steps article p {
  font-size: 12px;
  color: var(--av-parchment-muted);
}

.av-shop-extra {
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding: clamp(32px, 5vw, 56px) clamp(20px, 5vw, 56px) clamp(64px, 8vw, 96px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(20px, 3vw, 32px);
}

.av-shop-extra__panel {
  padding: clamp(28px, 4vw, 36px);
  background: var(--av-surface);
  border: 1px solid var(--av-line);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}

.av-shop-extra__panel h3 {
  margin-bottom: 12px;
}

.av-shop-extra__panel p {
  font-size: 14px;
  color: var(--av-parchment-muted);
  margin-bottom: 16px;
}

/* --------------------------------------------------------------------------
   25. FAQ page
   -------------------------------------------------------------------------- */
.av-faq-intro {
  max-width: 680px;
  margin: 0 auto clamp(32px, 5vw, 48px);
  padding: 0 clamp(20px, 5vw, 56px);
  color: var(--av-parchment-muted);
  font-size: 15px;
  line-height: 1.75;
}

.av-faq-system {
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding: 0 clamp(20px, 5vw, 56px) clamp(48px, 7vw, 72px);
}

.av-faq-system__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--av-line);
}

.av-faq-tab {
  padding: 10px 20px;
  font-family: var(--av-font-micro);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--av-muted);
  border: 1px solid var(--av-line);
  border-radius: 2px;
  transition: color 0.25s, border-color 0.25s, background 0.25s;
}

.av-faq-tab:hover,
.av-faq-tab.is-active {
  color: var(--av-copper-light);
  border-color: var(--av-copper);
  background: var(--av-copper-faint);
}

.av-faq-panel {
  display: none;
}

.av-faq-panel.is-active {
  display: block;
  animation: avFaqIn 0.4s var(--av-ease-out);
}

@keyframes avFaqIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.av-faq-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.av-faq-item {
  background: var(--av-surface);
  border: 1px solid var(--av-line);
  overflow: hidden;
  transition: border-color 0.25s;
}

.av-faq-item.is-open {
  border-color: var(--av-copper-dim);
}

.av-faq-item__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  text-align: left;
  font-size: 15px;
  font-weight: 500;
  color: var(--av-parchment);
  transition: color 0.25s, background 0.25s;
}

.av-faq-item__trigger:hover {
  background: var(--av-copper-faint);
  color: var(--av-copper-light);
}

.av-faq-item__trigger svg {
  flex-shrink: 0;
  transition: transform 0.3s var(--av-ease);
  color: var(--av-copper);
}

.av-faq-item.is-open .av-faq-item__trigger svg {
  transform: rotate(180deg);
}

.av-faq-item__body {
  padding: 0 22px 20px;
}

.av-faq-item__body p {
  font-size: 14px;
  color: var(--av-parchment-muted);
  line-height: 1.75;
}

.av-faq-cta {
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding: clamp(48px, 7vw, 72px) clamp(20px, 5vw, 56px);
  text-align: center;
  background: var(--av-surface);
  border-top: 1px solid var(--av-line);
}

.av-faq-cta h2 {
  margin-bottom: 12px;
}

.av-faq-cta p {
  color: var(--av-parchment-muted);
  margin-bottom: 24px;
}

/* --------------------------------------------------------------------------
   26. Contact page
   -------------------------------------------------------------------------- */
.av-contact-split {
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding: 0 clamp(20px, 5vw, 56px) clamp(48px, 7vw, 72px);
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(32px, 5vw, 56px);
  align-items: start;
}

.av-contact-info h2 {
  margin-bottom: 24px;
}

.av-contact-card {
  padding: 24px;
  background: var(--av-surface);
  border: 1px solid var(--av-line);
  margin-bottom: 20px;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
}

.av-contact-card h3 {
  margin-bottom: 14px;
  font-size: 1.1rem;
}

.av-contact-card p {
  font-size: 14px;
  color: var(--av-parchment-muted);
  margin-bottom: 8px;
  line-height: 1.7;
}

.av-contact-form {
  padding: clamp(28px, 4vw, 40px);
  background: var(--av-surface);
  border: 1px solid var(--av-line);
  clip-path: polygon(12px 0, 100% 0, 100% 100%, 0 100%, 0 12px);
}

.av-contact-form h2 {
  margin-bottom: 28px;
}

.av-form-row {
  margin-bottom: 20px;
}

.av-form-row label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--av-font-micro);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--av-muted);
}

.av-form-row label span {
  color: var(--av-copper);
}

.av-form-row input,
.av-form-row select,
.av-form-row textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--av-obsidian);
  border: 1px solid var(--av-line);
  border-radius: 2px;
  font-size: 15px;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.av-form-row input:focus,
.av-form-row select:focus,
.av-form-row textarea:focus {
  border-color: var(--av-copper);
  box-shadow: 0 0 0 3px var(--av-copper-dim);
  outline: none;
}

.av-form-row textarea {
  resize: vertical;
  min-height: 120px;
}

.av-form-note {
  margin-top: 16px;
  color: var(--av-muted);
}

.av-contact-map {
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding: clamp(32px, 5vw, 56px) clamp(20px, 5vw, 56px) clamp(64px, 8vw, 96px);
  border-top: 1px solid var(--av-line);
}

.av-contact-map h2 {
  margin-bottom: 20px;
}

.av-contact-map__frame {
  border: 1px solid var(--av-line);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  margin-bottom: 12px;
}

.av-contact-map__frame iframe {
  display: block;
  width: 100%;
  min-height: 400px;
}

/* --------------------------------------------------------------------------
   27. Cart page
   -------------------------------------------------------------------------- */
.av-cart-layout {
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding: 0 clamp(20px, 5vw, 56px) clamp(64px, 8vw, 96px);
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  gap: clamp(32px, 5vw, 48px);
  align-items: start;
}

.av-cart-items {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.av-cart-empty {
  padding: 48px 32px;
  text-align: center;
  background: var(--av-surface);
  border: 1px dashed var(--av-line);
  color: var(--av-muted);
  font-size: 15px;
}

.av-cart-empty a {
  color: var(--av-copper-light);
}

.av-cart-item {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 20px;
  align-items: center;
  padding: 20px;
  background: var(--av-surface);
  border: 1px solid var(--av-line);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
}

.av-cart-item img {
  width: 120px;
  height: 80px;
  object-fit: cover;
  border: 1px solid var(--av-line);
}

.av-cart-item__body h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.av-cart-item__meta {
  font-family: var(--av-font-micro);
  font-size: 11px;
  color: var(--av-muted);
  margin-bottom: 12px;
}

.av-cart-qty {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--av-line);
  border-radius: 2px;
  overflow: hidden;
}

.av-cart-qty button {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--av-obsidian);
  color: var(--av-parchment);
  transition: background 0.2s, color 0.2s;
}

.av-cart-qty button:hover {
  background: var(--av-copper-faint);
  color: var(--av-copper-light);
}

.av-cart-qty input {
  width: 40px;
  height: 32px;
  text-align: center;
  border: none;
  border-inline: 1px solid var(--av-line);
  background: var(--av-surface);
  font-family: var(--av-font-micro);
  font-size: 12px;
}

.av-cart-remove {
  padding: 8px 14px;
  font-family: var(--av-font-micro);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--av-muted);
  border: 1px solid var(--av-line);
  border-radius: 2px;
  transition: color 0.2s, border-color 0.2s;
}

.av-cart-remove:hover {
  color: var(--av-danger);
  border-color: var(--av-danger);
}

.av-cart-sidebar {
  position: sticky;
  top: calc(var(--av-nav-h) + 24px);
}

.av-cart-summary {
  padding: clamp(24px, 3vw, 32px);
  background: var(--av-surface);
  border: 1px solid var(--av-line-strong);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  box-shadow: var(--av-shadow-soft);
}

.av-cart-summary h2 {
  font-size: 1.25rem;
  margin-bottom: 24px;
}

.av-cart-coupon {
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--av-line);
}

.av-cart-coupon label {
  display: block;
  margin-bottom: 10px;
}

.av-cart-coupon__row {
  display: flex;
  gap: 8px;
}

.av-cart-coupon__row input {
  flex: 1;
  padding: 12px 14px;
  background: var(--av-obsidian);
  border: 1px solid var(--av-line);
  border-radius: 2px;
  font-family: var(--av-font-micro);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.av-cart-coupon__row input:focus {
  border-color: var(--av-copper);
  outline: none;
}

.av-cart-coupon__msg {
  margin-top: 10px;
  font-family: var(--av-font-micro);
  font-size: 10px;
  color: var(--av-copper);
  letter-spacing: 0.06em;
}

.av-cart-totals {
  margin-bottom: 20px;
}

.av-cart-totals div {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  font-size: 14px;
  border-bottom: 1px solid var(--av-line);
}

.av-cart-totals dt {
  color: var(--av-muted);
  font-weight: 400;
}

.av-cart-totals dd {
  font-family: var(--av-font-micro);
  font-size: 13px;
  color: var(--av-parchment);
}

.av-cart-totals__grand {
  border-bottom: none;
  padding-top: 16px;
  margin-top: 8px;
}

.av-cart-totals__grand dt {
  font-weight: 600;
  color: var(--av-parchment);
}

.av-cart-totals__grand dd {
  font-family: var(--av-font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--av-copper-light);
}

.av-cart-summary > .av-micro {
  display: block;
  margin-bottom: 20px;
  line-height: 1.6;
}

.av-cart-checkout {
  width: 100%;
  margin-bottom: 16px;
}

.av-cart-summary .av-link-arrow {
  display: flex;
  justify-content: center;
}

/* --------------------------------------------------------------------------
   28. Legal pages
   -------------------------------------------------------------------------- */
.av-legal {
  max-width: 760px;
  margin-inline: auto;
  padding: clamp(32px, 5vw, 56px) clamp(20px, 5vw, 40px) clamp(80px, 10vw, 120px);
}

.av-legal__head {
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--av-line);
}

.av-legal__head h1 {
  margin: 12px 0;
}

.av-legal__updated {
  font-family: var(--av-font-micro);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--av-muted);
}

.av-legal__body section {
  margin-bottom: 36px;
}

.av-legal__body h2 {
  font-size: 1.35rem;
  margin-bottom: 14px;
  color: var(--av-copper-light);
}

.av-legal__body h3 {
  font-size: 1.05rem;
  margin: 20px 0 10px;
}

.av-legal__body p {
  color: var(--av-parchment-muted);
  margin-bottom: 14px;
  font-size: 14px;
  line-height: 1.8;
}

.av-legal__body ul {
  margin: 12px 0 16px 20px;
  list-style: disc;
}

.av-legal__body li {
  color: var(--av-parchment-muted);
  font-size: 14px;
  margin-bottom: 8px;
  line-height: 1.7;
}

.av-legal__body address {
  margin-top: 16px;
  padding: 20px;
  background: var(--av-surface);
  border: 1px solid var(--av-line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--av-parchment-muted);
}

.av-legal__body address strong {
  color: var(--av-parchment);
  display: block;
  margin-bottom: 8px;
}

/* --------------------------------------------------------------------------
   29. Strata footer
   -------------------------------------------------------------------------- */
.av-strata-foot {
  position: relative;
  margin-top: auto;
  background: var(--av-surface);
  border-top: 1px solid var(--av-line);
  overflow: hidden;
}

.av-strata-foot__shear {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 48px;
  background: var(--av-obsidian);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 60%);
  pointer-events: none;
}

.av-strata-foot__grid {
  position: relative;
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding: clamp(56px, 8vw, 80px) clamp(20px, 5vw, 56px) 32px;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: clamp(32px, 5vw, 56px);
}

.av-strata-foot__brand {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.av-strata-foot__glyph {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--av-font-display);
  font-size: 24px;
  color: var(--av-copper-light);
  background: var(--av-copper-faint);
  border: 1px solid var(--av-line-strong);
  clip-path: polygon(0 0, 100% 0, 100% 75%, 75% 100%, 0 100%);
  flex-shrink: 0;
}

.av-strata-foot__brand h3 {
  font-size: 1.4rem;
  margin-bottom: 6px;
}

.av-strata-foot__brand p {
  font-size: 13px;
  color: var(--av-parchment-muted);
  line-height: 1.6;
}

.av-strata-foot__cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 3vw, 32px);
}

.av-strata-foot__col h4 {
  font-family: var(--av-font-micro);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--av-copper);
  margin-bottom: 16px;
}

.av-strata-foot__col a {
  display: block;
  padding: 6px 0;
  font-size: 13px;
  color: var(--av-parchment-muted);
  transition: color 0.2s, padding-left 0.25s var(--av-ease);
}

.av-strata-foot__col a:hover {
  color: var(--av-copper-light);
  padding-left: 6px;
}

.av-strata-foot__col address {
  font-size: 13px;
  color: var(--av-parchment-muted);
  line-height: 1.75;
  margin-bottom: 12px;
}

.av-strata-foot__col--wide address a {
  display: inline;
  padding: 0;
  color: var(--av-copper-light);
}

.av-strata-foot__letter {
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding: 0 clamp(20px, 5vw, 56px) 32px;
  display: flex;
  gap: 10px;
}

.av-strata-foot__letter input {
  flex: 1;
  max-width: 360px;
  padding: 14px 18px;
  background: var(--av-obsidian);
  border: 1px solid var(--av-line);
  border-radius: 2px;
  font-size: 14px;
}

.av-strata-foot__letter input:focus {
  border-color: var(--av-copper);
  outline: none;
}

.av-strata-foot__base {
  max-width: var(--av-content-max);
  margin-inline: auto;
  padding: 20px clamp(20px, 5vw, 56px) 28px;
  border-top: 1px solid var(--av-line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: var(--av-muted);
}

.page-home .av-strata-foot {
  margin-bottom: var(--av-ribbon-h);
}

/* --------------------------------------------------------------------------
   30. Toast & back to top
   -------------------------------------------------------------------------- */
.av-toast {
  position: fixed;
  bottom: calc(var(--av-ribbon-h, 0px) + 24px);
  left: 50%;
  z-index: 900;
  transform: translateX(-50%) translateY(120%);
  padding: 14px 28px;
  background: var(--av-surface);
  border: 1px solid var(--av-copper);
  color: var(--av-parchment);
  font-family: var(--av-font-micro);
  font-size: 11px;
  letter-spacing: 0.08em;
  box-shadow: var(--av-shadow-copper);
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: transform 0.45s var(--av-ease-out), opacity 0.45s;
  opacity: 0;
  pointer-events: none;
  max-width: calc(100% - 40px);
  text-align: center;
}

.page-home .av-toast {
  bottom: calc(var(--av-ribbon-h) + 24px);
}

.page-about .av-toast,
.page-shop .av-toast,
.page-faq .av-toast,
.page-contact .av-toast,
.page-cart .av-toast,
.page-privacy .av-toast {
  bottom: 24px;
}

.av-toast.is-visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.av-back-top {
  position: fixed;
  bottom: calc(var(--av-ribbon-h, 0px) + 24px);
  right: 24px;
  z-index: 440;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--av-surface);
  border: 1px solid var(--av-line-strong);
  color: var(--av-copper);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  box-shadow: var(--av-shadow-soft);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity 0.35s, visibility 0.35s, transform 0.35s var(--av-ease),
              background 0.25s, color 0.25s;
}

.page-home .av-back-top {
  bottom: calc(var(--av-ribbon-h) + 24px);
}

.page-about .av-back-top,
.page-shop .av-back-top,
.page-faq .av-back-top,
.page-contact .av-back-top,
.page-cart .av-back-top,
.page-privacy .av-back-top {
  bottom: 24px;
}

.av-back-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.av-back-top:hover {
  background: var(--av-copper);
  color: var(--av-ink);
  border-color: var(--av-copper);
}

/* --------------------------------------------------------------------------
   31. Responsive — tablet
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .av-stratum {
    grid-template-columns: 1fr;
  }

  .av-stratum__visual {
    position: relative;
    top: auto;
    order: -1;
  }

  .av-prism__panel {
    grid-template-columns: repeat(2, 1fr);
  }

  .av-prism__panel.is-active {
    grid-template-columns: repeat(2, 1fr);
  }

  .av-chronicle__layer {
    grid-template-columns: 1fr;
    margin-bottom: -40px;
  }

  .av-chronicle__layer-img {
    order: -1;
  }

  .av-ledger__step,
  .av-ledger__step:nth-child(even) {
    grid-template-columns: 1fr;
  }

  .av-ledger__step:nth-child(even) .av-ledger__step-img {
    order: 0;
  }

  .av-telemetry__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .av-telemetry__featured {
    grid-template-columns: repeat(2, 1fr);
  }

  .av-departure {
    grid-template-columns: 1fr;
  }

  .av-departure__visual {
    order: -1;
  }

  .av-about-values__row {
    grid-template-columns: repeat(2, 1fr);
  }

  .av-timeline-strata__node {
    grid-template-columns: 1fr;
  }

  .av-about-location__grid {
    grid-template-columns: 1fr;
  }

  .av-shop-mosaic__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .av-shop-process__steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .av-shop-extra {
    grid-template-columns: 1fr;
  }

  .av-contact-split {
    grid-template-columns: 1fr;
  }

  .av-cart-layout {
    grid-template-columns: 1fr;
  }

  .av-cart-sidebar {
    position: static;
  }

  .av-strata-foot__grid {
    grid-template-columns: 1fr;
  }

  .av-edge-nav__links {
    display: none;
  }

  .av-menu-trigger {
    display: flex;
  }
}

/* --------------------------------------------------------------------------
   32. Responsive — mobile
   -------------------------------------------------------------------------- */
@media (max-width: 640px) {
  :root {
    --av-nav-h: 60px;
    --av-ribbon-h: 44px;
  }

  .av-chapter-ribbon__readout {
    display: none;
  }

  .av-chapter-ribbon__tab {
    min-width: 56px;
    padding: 6px 10px;
  }

  .av-edge-nav__text em {
    display: none;
  }

  .av-lens__layer--front {
    position: relative;
    bottom: auto;
    right: auto;
    margin-top: 20px;
  }

  .av-lens__stats {
    flex-direction: row;
    gap: 20px;
  }

  .av-stratum__sheet--2,
  .av-stratum__sheet--3 {
    margin-left: 0;
  }

  .av-prism__panel.is-active {
    grid-template-columns: 1fr;
  }

  .av-shear__mosaic {
    grid-template-columns: 1fr;
  }

  .av-shear__tile:nth-child(even) {
    margin-top: 0;
  }

  .av-telemetry__grid,
  .av-telemetry__featured {
    grid-template-columns: 1fr;
  }

  .av-about-values__row {
    grid-template-columns: 1fr;
  }

  .av-about-narrative__grid {
    grid-template-columns: 1fr;
  }

  .av-shop-mosaic__grid {
    grid-template-columns: 1fr;
  }

  .av-shop-process__steps {
    grid-template-columns: 1fr;
  }

  .av-shop-filter__inner {
    flex-direction: column;
    align-items: stretch;
  }

  .av-cart-item {
    grid-template-columns: 80px 1fr;
    grid-template-rows: auto auto;
  }

  .av-cart-item img {
    width: 80px;
    height: 56px;
    grid-row: span 2;
  }

  .av-cart-remove {
    grid-column: 2;
    justify-self: start;
  }

  .av-strata-foot__cols {
    grid-template-columns: 1fr;
  }

  .av-strata-foot__letter {
    flex-direction: column;
  }

  .av-strata-foot__letter input {
    max-width: none;
  }

  .av-strata-foot__base {
    flex-direction: column;
    text-align: center;
  }

  .av-search-veil__form {
    flex-direction: column;
  }

  .av-departure__actions,
  .av-lens__actions {
    flex-direction: column;
  }

  .av-departure__actions .av-btn,
  .av-lens__actions .av-btn {
    width: 100%;
  }

  .av-fleet__cell {
    width: 85vw;
  }
}

/* --------------------------------------------------------------------------
   33. Reduced motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .av-reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .av-scroll-chapter {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .av-prism__panel.is-active,
  .av-echo__slide.is-active,
  .av-faq-panel.is-active {
    animation: none;
  }

  .av-btn:hover {
    transform: none;
  }
}

/* --------------------------------------------------------------------------
   34. Print
   -------------------------------------------------------------------------- */
@media print {
  .av-edge-nav,
  .av-chapter-ribbon,
  .av-search-veil,
  .av-slide-menu,
  .av-back-top,
  .av-toast {
    display: none !important;
  }

  body.av-body {
    background: white;
    color: black;
  }

  .av-scroll-chapter {
    min-height: auto;
    page-break-inside: avoid;
  }
}