/* ============================================
   XHC 小宏椅子 — Apple-style Chair Site
   ============================================ */

:root {
  --bg: #f5f5f7;
  --bg-dark: #1d1d1f;
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-light: #f5f5f7;
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --border: rgba(0, 0, 0, 0.08);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
  --radius: 18px;
  --nav-height: 52px;
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --font-logo: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-cn: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text',
    'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  overflow-x: hidden;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ---- Brand Logo ---- */
.brand-logo {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1px;
  line-height: 1;
  transition: opacity 0.2s var(--ease-out);
}

.brand-logo:hover {
  opacity: 0.75;
}

.brand-logo__en {
  display: flex;
  font-family: var(--font-logo);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text);
}

.brand-logo__en span {
  display: inline-block;
}

.brand-logo__accent {
  color: var(--accent);
  letter-spacing: 0.22em;
}

.brand-logo__cn {
  font-family: var(--font-cn);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.28em;
  color: var(--text-secondary);
  margin-left: 1px;
  padding-left: 1px;
}

.brand-logo--nav .brand-logo__en {
  font-size: 18px;
  letter-spacing: 0.2em;
}

.brand-logo--nav .brand-logo__cn {
  font-size: 10px;
  letter-spacing: 0.24em;
}

.brand-logo--footer .brand-logo__en {
  color: var(--text);
}

.brand-logo--hero {
  margin-bottom: 8px;
}

.brand-logo--hero .brand-logo__en {
  font-size: 28px;
  letter-spacing: 0.26em;
}

.brand-logo--hero .brand-logo__cn {
  font-size: 13px;
  letter-spacing: 0.32em;
}

/* ---- Navigation ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  transition: background 0.4s var(--ease-out), backdrop-filter 0.4s;
}

.nav.scrolled {
  background: rgba(245, 245, 247, 0.82);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-shrink: 0;
}

.locale {
  position: relative;
  z-index: 1101;
}

.locale__trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 10px;
  margin: 0;
  border: none;
  border-radius: 980px;
  background: transparent;
  font-family: inherit;
  font-size: 12px;
  font-weight: 400;
  line-height: 1;
  color: var(--text-secondary);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.2s var(--ease-out), color 0.2s;
}

.locale__trigger:hover {
  background: rgba(0, 0, 0, 0.05);
  color: var(--text);
}

.locale.is-open .locale__trigger {
  background: rgba(0, 0, 0, 0.06);
  color: var(--text);
}

.locale__globe {
  flex-shrink: 0;
  opacity: 0.75;
}

.locale__current {
  font-weight: 500;
  letter-spacing: -0.01em;
}

.locale__chevron {
  flex-shrink: 0;
  opacity: 0.5;
  transition: transform 0.25s var(--ease-out);
}

.locale.is-open .locale__chevron {
  transform: rotate(180deg);
}

.locale__menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 220px;
  padding: 6px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 14px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.06);
  z-index: 1102;
}

.locale__menu[hidden] {
  display: none;
}

.locale__option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 10px 12px;
  margin: 0;
  border: none;
  border-radius: 10px;
  background: transparent;
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.15s;
}

.locale__option:hover {
  background: rgba(0, 0, 0, 0.04);
}

.locale__option-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.locale__option-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.2;
}

.locale__option-region {
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.2;
}

.locale__check {
  flex-shrink: 0;
  color: var(--accent);
  opacity: 0;
  transition: opacity 0.15s;
}

.locale__option.is-active .locale__check {
  opacity: 1;
}

.nav-links {
  display: flex;
  gap: 28px;
}

.nav-links a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--text);
}

.nav-cta {
  font-size: 14px;
  color: var(--accent);
  font-weight: 500;
}

.nav-cta:hover {
  color: var(--accent-hover);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 980px;
  font-size: 17px;
  font-weight: 400;
  transition: all 0.25s var(--ease-out);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: scale(1.02);
}

.btn-secondary {
  background: transparent;
  color: var(--accent);
}

.btn-secondary:hover {
  text-decoration: underline;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 17px;
}

/* ---- Hero ---- */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: calc(var(--nav-height) + 40px) 24px 60px;
  gap: 40px;
  position: relative;
}

.hero-content {
  z-index: 2;
}

.hero-eyebrow {
  font-size: 17px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 12px;
}

.hero-title {
  font-size: clamp(48px, 6vw, 80px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 20px;
}

.hero-title span {
  display: block;
}

.hero-subtitle {
  font-size: 21px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 32px;
  max-width: 400px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 500px;
}

.chair-stage {
  position: relative;
  width: 100%;
  max-width: 520px;
  perspective: 1200px;
  perspective-origin: 50% 50%;
}

.chair-3d-wrap {
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.1s linear;
  will-change: transform;
}

.chair-img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.hero-chair {
  max-height: 70vh;
  filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.15));
}

.chair-shadow {
  position: absolute;
  bottom: -10px;
  left: 10%;
  right: 10%;
  height: 30px;
  background: radial-gradient(ellipse, rgba(0, 0, 0, 0.18) 0%, transparent 70%);
  transform: translateZ(-50px);
  pointer-events: none;
}

.chair-shadow--sm {
  bottom: 5px;
  height: 20px;
}

.chair-reflection {
  position: absolute;
  bottom: -40px;
  left: 15%;
  right: 15%;
  height: 60px;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.04), transparent);
  border-radius: 50%;
  filter: blur(8px);
  pointer-events: none;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary);
  animation: fadeInUp 1s 1.5s both;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-secondary), transparent);
  animation: scrollPulse 2s infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

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

/* ---- Scroll 360 Section ---- */
.scroll-360 {
  height: 500vh;
  position: relative;
}

.scroll-360-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.scroll-360-inner {
  max-width: 1200px;
  width: 100%;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.scroll-360-text {
  position: relative;
  min-height: 200px;
}

.scroll-panel {
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
  pointer-events: none;
}

.scroll-panel.active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.scroll-panel h2 {
  font-size: clamp(36px, 4vw, 56px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 16px;
}

.scroll-panel p {
  font-size: 19px;
  color: var(--text-secondary);
  line-height: 1.5;
  max-width: 380px;
}

.scroll-360-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.chair-360-stage {
  position: relative;
  width: 100%;
  max-width: 400px;
  perspective: 1000px;
}

.chair-360-wrap {
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.3s var(--ease-out);
}

.chair-360-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  opacity: 0;
  transition: opacity 0.5s var(--ease-out);
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.12));
}

.chair-360-img.active {
  opacity: 1;
  position: relative;
}

.angle-indicator {
  display: flex;
  gap: 8px;
}

.angle-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.15);
  transition: all 0.3s var(--ease-out);
}

.angle-dot.active {
  background: var(--accent);
  transform: scale(1.3);
}

.scroll-progress {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 2px;
  background: rgba(0, 0, 0, 0.1);
  border-radius: 2px;
}

.scroll-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.1s linear;
}

/* ---- Features ---- */
.feature {
  padding: 120px 24px;
}

.feature--light {
  background: var(--bg);
}

.feature--dark {
  background: var(--bg-dark);
  color: var(--text-light);
}

/* Chassis highlight section */
.feature--chassis {
  position: relative;
  background: #0a0a0c;
  color: var(--text-light);
  padding-bottom: 80px;
  overflow: hidden;
}

.chassis-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 70% 40%, rgba(0, 113, 227, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 20% 80%, rgba(255, 255, 255, 0.04) 0%, transparent 50%);
  pointer-events: none;
}

.feature--chassis .feature-inner {
  position: relative;
  z-index: 1;
}

.feature--chassis .feature-label {
  color: #2997ff;
}

.feature--chassis .feature-text p {
  color: #a1a1a6;
  max-width: 460px;
}

.feature-stats--chassis strong {
  background: linear-gradient(135deg, #ffffff 0%, #a8c8f0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.feature-stats--chassis span {
  color: #86868b;
}

.feature-img-wrap--chassis {
  background: linear-gradient(160deg, #1a1a1e 0%, #0a0a0c 100%);
  box-shadow: 0 30px 80px rgba(0, 113, 227, 0.15), var(--shadow);
}

.chassis-materials {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 48px auto 0;
  padding: 0 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.chassis-material {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 980px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.chassis-material__icon {
  font-size: 10px;
  color: #2997ff;
  line-height: 1;
}

.chassis-material__name {
  font-size: 14px;
  font-weight: 500;
  color: #f5f5f7;
}

.chassis-material__mat {
  font-size: 12px;
  font-weight: 600;
  color: #2997ff;
  letter-spacing: 0.04em;
}

.chassis-material--soft .chassis-material__mat {
  color: #86868b;
}

.feature-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.feature-inner--reverse {
  direction: rtl;
}

.feature-inner--reverse > * {
  direction: ltr;
}

.feature-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.feature--dark .feature-label {
  color: #2997ff;
}

.feature-text h2 {
  font-size: clamp(36px, 4vw, 52px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 20px;
}

.feature-text p {
  font-size: 19px;
  color: var(--text-secondary);
  line-height: 1.5;
  max-width: 420px;
}

.feature--dark .feature-text p {
  color: #a1a1a6;
}

.feature-stats {
  list-style: none;
  display: flex;
  gap: 48px;
  margin-top: 40px;
}

.feature-stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.feature-stats strong {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.feature-stats span {
  font-size: 14px;
  color: var(--text-secondary);
}

.feature-visual {
  position: relative;
}

.feature-img-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow);
}

.feature-img-wrap img {
  width: 100%;
  display: block;
}

/* Callouts */
.callout {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  opacity: 0;
  transition: opacity 0.6s var(--ease-out);
}

.callout.visible {
  opacity: 1;
}

.callout-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.2);
  animation: pulse 2s infinite;
}

.feature--dark .callout-dot {
  background: #2997ff;
  box-shadow: 0 0 0 4px rgba(41, 151, 255, 0.2);
}

.callout-line {
  width: 40px;
  height: 1px;
  background: var(--accent);
}

.feature--dark .callout-line {
  background: #2997ff;
}

.callout--lumbar {
  top: 35%;
  right: -10px;
}

.callout--spine {
  top: 25%;
  left: -10px;
  flex-direction: row-reverse;
}

.callout--chassis {
  bottom: 18%;
  right: 0;
}

.callout--pillar {
  top: 42%;
  left: -10px;
  flex-direction: row-reverse;
}

.feature--chassis .callout {
  color: #f5f5f7;
}

.feature--chassis .callout-line {
  background: #2997ff;
}

.feature--chassis .callout-dot {
  background: #2997ff;
  box-shadow: 0 0 0 4px rgba(41, 151, 255, 0.25);
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.2); }
  50% { box-shadow: 0 0 0 8px rgba(0, 113, 227, 0.1); }
}

/* ---- Anatomy / Exploded ---- */
.anatomy {
  padding: 120px 24px;
  background: linear-gradient(180deg, var(--bg) 0%, #e8e8ed 100%);
  text-align: center;
}

.anatomy-header {
  max-width: 600px;
  margin: 0 auto 60px;
}

.anatomy-header h2 {
  font-size: clamp(36px, 4vw, 52px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 16px;
}

.anatomy-header p {
  font-size: 19px;
  color: var(--text-secondary);
}

.anatomy-stage {
  max-width: 500px;
  margin: 0 auto;
  perspective: 800px;
}

.anatomy-chair {
  position: relative;
  transform-style: preserve-3d;
}

.anatomy-base {
  width: 100%;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.1));
  transition: opacity 0.5s;
}

.anatomy-chair.exploded .anatomy-base {
  opacity: 0.15;
}

.anatomy-part {
  position: absolute;
  border: 2px dashed transparent;
  border-radius: 8px;
  transition: all 0.8s var(--ease-out);
  pointer-events: none;
}

.part-label {
  position: absolute;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(255, 255, 255, 0.9);
  padding: 4px 10px;
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  opacity: 0;
  transition: opacity 0.5s var(--ease-out);
  white-space: nowrap;
}

.anatomy-chair.exploded .part-label {
  opacity: 1;
}

.anatomy-part--headrest {
  top: 0;
  left: 25%;
  width: 50%;
  height: 18%;
}

.anatomy-part--upper {
  top: 18%;
  left: 20%;
  width: 60%;
  height: 28%;
}

.anatomy-part--lumbar {
  top: 46%;
  left: 22%;
  width: 56%;
  height: 14%;
}

.anatomy-part--seat {
  top: 58%;
  left: 18%;
  width: 64%;
  height: 16%;
}

.anatomy-part--base {
  top: 72%;
  left: 10%;
  width: 80%;
  height: 28%;
}

.anatomy-chair.exploded .anatomy-part--headrest {
  transform: translateY(-40px) translateZ(30px);
  border-color: rgba(0, 113, 227, 0.3);
}

.anatomy-chair.exploded .anatomy-part--upper {
  transform: translateY(-20px) translateZ(20px);
  border-color: rgba(0, 113, 227, 0.25);
}

.anatomy-chair.exploded .anatomy-part--lumbar {
  transform: translateX(30px) translateZ(40px);
  border-color: rgba(0, 113, 227, 0.35);
}

.anatomy-chair.exploded .anatomy-part--seat {
  transform: translateY(15px) translateZ(15px);
  border-color: rgba(0, 113, 227, 0.2);
}

.anatomy-chair.exploded .anatomy-part--base {
  transform: translateY(30px) translateZ(10px);
  border-color: rgba(0, 113, 227, 0.15);
}

.anatomy-part--headrest .part-label { top: -28px; left: 50%; transform: translateX(-50%); }
.anatomy-part--upper .part-label { top: -28px; right: 0; }
.anatomy-part--lumbar .part-label { top: 50%; right: -80px; transform: translateY(-50%); }
.anatomy-part--seat .part-label { bottom: -28px; left: 50%; transform: translateX(-50%); }
.anatomy-part--base .part-label { bottom: -28px; left: 50%; transform: translateX(-50%); }

/* ---- Specs ---- */
.specs {
  padding: 120px 24px;
  background: var(--bg-dark);
  color: var(--text-light);
}

.specs-inner {
  max-width: 900px;
  margin: 0 auto;
}

.specs-title {
  font-size: clamp(36px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: -0.03em;
  text-align: center;
  margin-bottom: 60px;
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  overflow: hidden;
}

.spec-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 28px;
  background: var(--bg-dark);
  gap: 16px;
}

.spec-item--highlight {
  background: rgba(0, 113, 227, 0.12);
  border: 1px solid rgba(41, 151, 255, 0.25);
  grid-column: 1 / -1;
}

.spec-item--highlight .spec-val {
  color: #2997ff;
  font-weight: 600;
}

.spec-key {
  font-size: 15px;
  color: #a1a1a6;
}

.spec-val {
  font-size: 15px;
  font-weight: 500;
  text-align: right;
}

/* ---- CTA ---- */
.cta {
  padding: 120px 24px;
  background: var(--bg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 16px;
}

.cta-inner p {
  font-size: 19px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.cta-price {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 32px;
}

.cta-price-label {
  font-size: 15px;
  color: var(--text-secondary);
}

.cta-price-val {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.cta-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.cta-note {
  font-size: 13px;
  color: var(--text-secondary);
}

.cta-visual {
  display: flex;
  justify-content: center;
}

.cta-chair {
  max-height: 500px;
  object-fit: contain;
  filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.12));
  animation: floatChair 6s ease-in-out infinite;
}

@keyframes floatChair {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ---- Footer ---- */
.footer {
  padding: 40px 24px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--text);
}

.footer-locale {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.footer-locale__globe {
  color: var(--text-secondary);
  flex-shrink: 0;
}

.footer-locale__btn {
  border: none;
  background: none;
  padding: 0;
  margin: 0;
  font-family: inherit;
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: color 0.2s;
}

.footer-locale__btn:hover {
  color: var(--text);
}

.footer-locale__btn.is-active {
  color: var(--text);
  font-weight: 500;
}

.footer-locale__sep {
  width: 1px;
  height: 12px;
  background: var(--border);
}

.footer-copy {
  font-size: 12px;
  color: var(--text-secondary);
}

/* ---- Reveal animations ---- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

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

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: calc(var(--nav-height) + 24px);
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-visual {
    min-height: 360px;
  }

  .nav-links {
    display: none;
  }

  .nav-right {
    gap: 10px;
  }

  .locale__trigger {
    padding: 6px 8px;
    font-size: 11px;
  }

  .locale__current {
    max-width: 72px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .locale__menu {
    right: -8px;
    min-width: 200px;
  }

  .nav-cta {
    font-size: 13px;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .footer-locale {
    justify-content: center;
  }

  .scroll-360 {
    height: 400vh;
  }

  .scroll-360-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }

  .scroll-panel p {
    margin: 0 auto;
  }

  .scroll-360-text {
    min-height: 160px;
  }

  .feature-inner,
  .feature-inner--reverse {
    grid-template-columns: 1fr;
    gap: 48px;
    direction: ltr;
  }

  .feature-stats {
    gap: 24px;
  }

  .feature-stats--chassis {
    justify-content: center;
  }

  .chassis-materials {
    gap: 8px;
  }

  .chassis-material {
    padding: 10px 14px;
  }

  .callout--chassis {
    right: 0;
    bottom: 12%;
  }

  .callout--pillar {
    left: 0;
  }

  .cta {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .cta-actions {
    justify-content: center;
  }

  .specs-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .callout--lumbar {
    right: 0;
  }

  .callout--spine {
    left: 0;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 42px;
  }

  .feature-stats {
    gap: 24px;
  }

  .feature-stats strong {
    font-size: 32px;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}