/* ============================================
   Vercombe — Design System & Global Styles
   ============================================ */

/* ─── CSS Variables ─── */
:root {
  --color-bg: #FAFAFA;
  --color-bg-alt: #F5F2ED;
  --color-text: #2D2D2D;
  --color-text-light: #666666;
  --color-text-muted: #999999;
  --color-accent: #C9A96E;
  --color-accent-dark: #B8944F;
  --color-white: #FFFFFF;
  --color-border: #E8E5DF;
  --color-overlay: rgba(45, 45, 45, 0.5);

  --font-heading: 'Playfair Display', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'WenQuanYi Micro Hei', serif;
  --font-body: 'DM Sans', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'WenQuanYi Micro Hei', -apple-system, BlinkMacSystemFont, sans-serif;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --spacing-2xl: 8rem;

  --max-width: 1200px;
  --header-height: 80px;
  --header-height-shrunk: 60px;
  --transition-slow: 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
  --transition-med: 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
  --transition-fast: 0.2s ease;
}

/* ─── Reset & Base ─── */
*, *::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: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

body.nav-open { overflow: hidden; }

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

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

h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.3;
}

/* ─── Utility ─── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-2xl) 0;
}

.section-title {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

.section-subtitle {
  font-size: 1rem;
  text-align: center;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xl);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.section-label {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  color: var(--color-accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-align: center;
  margin-bottom: var(--spacing-xs);
}

/* ─── Header ─── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(250, 250, 250, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: height var(--transition-med), background var(--transition-med), border-color var(--transition-med);
}

.site-header.shrunk {
  height: var(--header-height-shrunk);
  background: rgba(250, 250, 250, 0.96);
  border-bottom-color: var(--color-border);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  letter-spacing: 0.08em;
  color: var(--color-text);
  transition: font-size var(--transition-med);
  white-space: nowrap;
  text-align: center;
  line-height: 1.2;
}

.shrunk .logo { font-size: 1.3rem; }

.logo-accent { color: var(--color-accent); }

/* ─── Navigation ─── */
.main-nav { display: flex; align-items: center; gap: var(--spacing-md); }

.main-nav a {
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  color: var(--color-text-light);
  transition: color var(--transition-fast);
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--color-accent);
  transition: width var(--transition-med);
}

.main-nav a:hover { color: var(--color-accent); }
.main-nav a:hover::after { width: 100%; }
.main-nav a.active { color: var(--color-accent); }
.main-nav a.active::after { width: 100%; }

.lang-btn {
  background: none;
  border: 1px solid var(--color-border);
  padding: 0.4rem 1rem;
  font-family: var(--font-body);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--color-text-light);
  cursor: pointer;
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.lang-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Ensure lang buttons are always clickable */
.lang-btn {
  position: relative;
  z-index: 10;
  pointer-events: auto !important;
}

/* ─── Hamburger ─── */
.hamburger-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.hamburger-line {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--color-text);
  margin: 3px 0;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.hamburger-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}
.hamburger-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ─── Mobile Nav Overlay ─── */
@media (max-width: 768px) {
  .hamburger-toggle { display: flex; }

  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-white);
    flex-direction: column;
    align-items: flex-start;
    padding: 100px var(--spacing-md) var(--spacing-md);
    gap: var(--spacing-sm);
    box-shadow: -4px 0 24px rgba(0,0,0,0.06);
    transition: right var(--transition-med);
    z-index: 999;
  }

  .main-nav.open { right: 0; }

  .main-nav a {
    font-size: 1.1rem;
    padding: 0.5rem 0;
    width: 100%;
    border-bottom: 1px solid var(--color-border);
  }

  .mobile-lang { margin-top: var(--spacing-md); }
  .desktop-lang { display: none; }
}

@media (min-width: 769px) {
  .desktop-lang { display: inline-block; }
  .mobile-lang { display: none; }
}

/* ─── Hero Banner ─── */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-white);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.55);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(45,45,45,0.25) 0%, rgba(45,45,45,0.45) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  padding: 0 var(--spacing-md);
}

.hero-brand {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.hero-slogan {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  line-height: 1.8;
  margin-bottom: var(--spacing-xs);
  opacity: 0.95;
}

.hero-sub {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: var(--spacing-xl);
  line-height: 1.7;
}

.hero-btns {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.85rem 2.2rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-transform: uppercase;
}

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

.btn-primary:hover {
  background: var(--color-accent-dark);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 1px solid rgba(255,255,255,0.5);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--color-white);
}

.btn-outline-dark {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-outline-dark:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.hero-scroll-hint {
  position: absolute;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  width: 28px;
  height: 44px;
  border: 1.5px solid rgba(255,255,255,0.4);
  border-radius: 14px;
}

.hero-scroll-hint::after {
  content: '';
  display: block;
  width: 2px;
  height: 8px;
  background: rgba(255,255,255,0.6);
  margin: 8px auto 0;
  border-radius: 1px;
  animation: scrollHint 2s ease-in-out infinite;
}

@keyframes scrollHint {
  0%, 100% { transform: translateY(0); opacity: 0.4; }
  50% { transform: translateY(6px); opacity: 1; }
}

/* ─── Brand Values ─── */
.values-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--spacing-md);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.value-card {
  text-align: center;
  padding: var(--spacing-md) var(--spacing-sm);
}

.value-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--spacing-sm);
  border: 1.5px solid var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: 1.3rem;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.value-card:hover .value-icon {
  background: var(--color-accent);
  color: var(--color-white);
}

.value-card h4 {
  font-size: 1rem;
  margin-bottom: var(--spacing-xs);
}

.value-card p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

@media (max-width: 1024px) {
  .values-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .values-grid { grid-template-columns: repeat(2, 1fr); gap: var(--spacing-sm); }
}

/* ─── Dual Categories ─── */
.categories-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 480px;
}

.cat-panel {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl) var(--spacing-md);
  text-align: center;
  color: var(--color-white);
  overflow: hidden;
  cursor: pointer;
}

.cat-panel-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.cat-panel-bg .placeholder-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.5);
  transition: transform var(--transition-slow), filter var(--transition-slow);
}

.cat-panel:hover .placeholder-img {
  transform: scale(1.05);
  filter: brightness(0.45);
}

.cat-panel-content {
  position: relative;
  z-index: 1;
  max-width: 400px;
}

.cat-panel-content h3 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  margin-bottom: var(--spacing-xs);
}

.cat-panel-content .cat-sub {
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-sm);
  opacity: 0.7;
}

.cat-panel-content p {
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
  opacity: 0.85;
}

@media (max-width: 768px) {
  .categories-split { grid-template-columns: 1fr; min-height: auto; }
  .cat-panel { min-height: 360px; }
}

/* ─── Featured Series ─── */
.series-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.series-card {
  background: var(--color-white);
  overflow: hidden;
  transition: transform var(--transition-med), box-shadow var(--transition-med);
}

.series-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.06);
}

.series-card-img {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--color-bg-alt);
}

.series-card-img .placeholder-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.series-card:hover .placeholder-img {
  transform: scale(1.06);
}

.series-card-body {
  padding: var(--spacing-md);
}

.series-card-body h4 {
  font-size: 1.15rem;
  margin-bottom: var(--spacing-xs);
}

.series-card-body p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

.series-card-tag {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}

@media (max-width: 1024px) {
  .series-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .series-grid { grid-template-columns: 1fr; }
}

/* ─── Attitude Quote ─── */
.attitude {
  background: var(--color-bg-alt);
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-md);
}

.attitude blockquote {
  max-width: 700px;
  margin: 0 auto;
}

.attitude blockquote p {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

.attitude blockquote footer {
  font-size: 0.9rem;
  color: var(--color-accent);
  letter-spacing: 0.08em;
}

/* ─── CTA Section ─── */
.cta-section {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-md);
  background: var(--color-white);
}

.cta-section h2 {
  font-size: 2.2rem;
  margin-bottom: var(--spacing-sm);
}

.cta-section p {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
  font-size: 1.05rem;
}

/* ─── About Lab (index) ─── */
.about-lab-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.about-lab-card {
  text-align: center;
  padding: var(--spacing-md);
}

.about-lab-card .lab-icon {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-accent);
}

.about-lab-card h4 {
  font-size: 1rem;
  margin-bottom: var(--spacing-xs);
}

.about-lab-card p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .about-lab-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .about-lab-grid { grid-template-columns: 1fr; }
}

/* ─── Footer ─── */
.site-footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.7);
  padding: var(--spacing-xl) var(--spacing-md) var(--spacing-md);
}

.footer-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand h3 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
  letter-spacing: 0.06em;
}

.footer-brand p {
  font-size: 0.85rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.5);
}

.footer-col h4 {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.footer-col a {
  display: block;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 0.5rem;
  transition: color var(--transition-fast);
}

.footer-col a:hover { color: var(--color-accent); }

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-top: var(--spacing-md);
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
}

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-md); }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ─── Products Page ─── */
.page-banner {
  background: var(--color-bg-alt);
  padding: calc(var(--header-height) + var(--spacing-xl)) var(--spacing-md) var(--spacing-xl);
  text-align: center;
}

.product-filters {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.6rem 1.5rem;
  background: none;
  border: 1px solid var(--color-border);
  font-family: var(--font-body);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  color: var(--color-text-light);
  cursor: pointer;
  transition: all var(--transition-fast);
  border-radius: 2px;
  text-transform: uppercase;
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(201, 169, 110, 0.05);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  max-width: var(--max-width);
  margin: 0 auto var(--spacing-xl);
  padding: 0 var(--spacing-md);
}

.product-card {
  background: var(--color-white);
  overflow: hidden;
  transition: transform var(--transition-med), box-shadow var(--transition-med);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.06);
}

.product-card-img {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--color-bg-alt);
}

.product-card-img .placeholder-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.product-card:hover .placeholder-img {
  transform: scale(1.06);
}

.product-card-body {
  padding: var(--spacing-md);
}

.product-card-body h4 {
  font-size: 1.05rem;
  margin-bottom: 0.25rem;
}

.product-card-body .product-eng {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--spacing-sm);
}

.product-card-body p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .product-grid { grid-template-columns: 1fr; }
}

/* ─── Product Category Sections ─── */
.product-area {
  margin-bottom: var(--spacing-xl);
}

.subcategory-section {
  margin-bottom: var(--spacing-lg);
}

.subcategory-title {
  max-width: var(--max-width);
  margin: 0 auto var(--spacing-md);
  padding: 0 var(--spacing-md);
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--color-accent);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* Material tag on product cards */
.product-material-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 2;
  padding: 0.25rem 0.6rem;
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  border-radius: 2px;
  pointer-events: none;
}

.product-material-tag.lab {
  background: rgba(255,255,255,0.92);
  color: var(--color-text-light);
}

.product-material-tag.moi {
  background: rgba(201,169,110,0.15);
  color: var(--color-accent-dark);
}

.product-card-img {
  position: relative;
}

@media (max-width: 640px) {
  .subcategory-title {
    text-align: center;
  }
}

/* ─── Brand Story Page ─── */
.story-section {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.story-block {
  margin-bottom: var(--spacing-xl);
}

.story-block h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
  padding-bottom: var(--spacing-xs);
  border-bottom: 1px solid var(--color-border);
}

.story-block p {
  font-size: 1.05rem;
  line-height: 2;
  color: var(--color-text-light);
  text-align: justify;
}

.story-block .story-en {
  font-size: 0.8rem;
  font-style: italic;
  font-weight: 300;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.story-image-break {
  max-width: 800px;
  margin: var(--spacing-lg) auto;
}

.story-image-break img {
  width: 100%;
  max-height: 400px;
  object-fit: cover;
}

/* ─── Craft Page ─── */
.craft-steps {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.craft-step {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
}

.craft-step:last-child { border-bottom: none; }

.craft-step-num {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border: 1.5px solid var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: var(--color-accent);
}

.craft-step-body h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
}

.craft-step-body p {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-text-light);
}

.craft-atmosphere {
  max-width: 800px;
  margin: var(--spacing-lg) auto 0;
}

.craft-atmosphere img {
  width: 100%;
  max-height: 400px;
  object-fit: cover;
}

@media (max-width: 640px) {
  .craft-step { flex-direction: column; gap: var(--spacing-sm); }
}

/* ─── Contact Page ─── */
.contact-grid {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.contact-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.contact-info-card {
  padding: var(--spacing-md);
  background: var(--color-white);
  text-align: center;
}

.contact-info-card .contact-icon {
  font-size: 1.6rem;
  margin-bottom: var(--spacing-xs);
  color: var(--color-accent);
}

.contact-info-card h4 {
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}

.contact-info-card p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

.contact-form-wrapper {
  background: var(--color-white);
  padding: var(--spacing-lg);
}

.contact-form-wrapper h3 {
  font-size: 1.3rem;
  margin-bottom: var(--spacing-md);
}

.contact-form .form-group {
  margin-bottom: var(--spacing-sm);
}

.contact-form label {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-light);
  margin-bottom: 0.35rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.85rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition-fast);
  outline: none;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--color-accent);
}

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

.contact-form button {
  width: 100%;
  padding: 0.9rem;
  font-size: 0.9rem;
  margin-top: var(--spacing-xs);
}

.form-privacy {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: var(--spacing-sm);
}

@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
  .contact-info-grid { grid-template-columns: 1fr 1fr; }
}

/* ─── Scroll Reveal Animation ─── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Stagger children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-stagger.revealed > *:nth-child(1) { transition-delay: 0s; }
.reveal-stagger.revealed > *:nth-child(2) { transition-delay: 0.1s; }
.reveal-stagger.revealed > *:nth-child(3) { transition-delay: 0.2s; }
.reveal-stagger.revealed > *:nth-child(4) { transition-delay: 0.3s; }
.reveal-stagger.revealed > *:nth-child(5) { transition-delay: 0.4s; }
.reveal-stagger.revealed > *:nth-child(6) { transition-delay: 0.5s; }

.reveal-stagger.revealed > * {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Placeholder images ─── */
.placeholder-img {
  background: var(--color-bg-alt);
}

/* ─── Brand Values (Homepage) ─── */
.brand-values .philosophy-inner {
  text-align: center;
  max-width: 680px;
}
.brand-values .section-label {
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.3rem;
}
.section-label-en {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-style: italic;
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  margin-bottom: var(--spacing-lg);
}

/* ─── Brand Philosophy (Homepage Manifesto) ─── */
.brand-philosophy {
  background: var(--color-bg);
}
.philosophy-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}
.philosophy-block {
  margin-bottom: var(--spacing-md);
}
.philosophy-cn {
  font-family: var(--font-heading);
  font-size: 1.12rem;
  line-height: 1.85;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  letter-spacing: 0.02em;
}
.philosophy-en {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-style: italic;
  line-height: 1.65;
  color: var(--color-text-muted);
  font-weight: 300;
}
.philosophy-divider {
  text-align: center;
  font-size: 1.2rem;
  color: var(--color-accent);
  margin: var(--spacing-lg) 0;
  opacity: 0.6;
}
.philosophy-final {
  margin-bottom: 0;
}
.philosophy-final .philosophy-cn {
  font-size: 1.2rem;
  color: var(--color-text);
}

@media (max-width: 640px) {
  .philosophy-cn { font-size: 1rem; }
  .philosophy-en { font-size: 0.8rem; }
  .philosophy-final .philosophy-cn { font-size: 1.05rem; }
}

/* ─── Section Dark Variant ─── */
.section-dark {
  background: #1C1C1E;
  color: var(--color-white);
}

/* ─── Technical Craft Standards ─── */
.tech-craft {
  padding: var(--spacing-2xl) 0;
}
.tech-craft-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}
.tech-craft-label {
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}
.tech-craft-title {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 500;
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}
.tech-craft-subtitle {
  font-size: 1rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.6;
  margin-bottom: 0.3rem;
}
.tech-craft-subtitle-en,
.tech-craft-subtitle-en-two {
  font-size: 0.85rem;
  font-style: italic;
  color: rgba(255,255,255,0.5);
  line-height: 1.5;
}
.tech-craft-subtitle-en-two {
  margin-bottom: var(--spacing-lg);
}

.tech-grid {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}
.tech-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0;
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding-bottom: var(--spacing-lg);
  border-radius: 0;
}
.tech-card > .tech-card-icon {
  display: none;
}
.tech-card .tech-card-body .tech-card-icon {
  display: inline;
}
.tech-card-body { flex: 1; }
.tech-card-body h4 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  color: var(--color-white);
  margin-bottom: 0.1rem;
  font-weight: 500;
}
.tech-card-label-en {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-style: italic;
  color: var(--color-accent);
  letter-spacing: 0.03em;
  margin-bottom: var(--spacing-xs);
}
.tech-card-sub {
  display: block;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 400;
  font-style: italic;
  color: var(--color-accent);
  letter-spacing: 0.05em;
  margin-top: 0.1rem;
}
.tech-card-sub-en {
  display: block;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 400;
  font-style: italic;
  color: var(--color-accent);
  letter-spacing: 0.05em;
  margin-top: 0.1rem;
}
.tech-card-cn {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.65;
  margin-top: var(--spacing-xs);
}
.tech-card-en {
  font-size: 0.78rem;
  font-style: italic;
  color: rgba(255,255,255,0.45);
  line-height: 1.5;
  margin-top: 0.4rem;
}

/* ── Craft page language toggle ── */
html[lang="zh-CN"] .tech-card-label-en,
html[lang="zh-CN"] .tech-card-en,
html[lang="zh-CN"] .tech-craft-subtitle-en,
html[lang="zh-CN"] .tech-craft-subtitle-en-two,
html[lang="zh-CN"] .tech-slogan-en {
  display: none;
}

html[lang="en"] .tech-card-cn,
html[lang="en"] .tech-slogan-cn,
html[lang="en"] .tech-craft-label,
html[lang="en"] .tech-craft-subtitle,
html[lang="en"] .tech-card-title-cn {
  display: none;
}

html[lang="zh-CN"] .tech-card-title-en {
  display: none;
}

.tech-slogan {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255,255,255,0.08);
}
.tech-slogan-cn {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: var(--color-accent);
  letter-spacing: 0.04em;
}
.tech-slogan-en {
  font-size: 0.85rem;
  font-style: italic;
  color: rgba(255,255,255,0.5);
  margin-top: 0.3rem;
}

@media (max-width: 768px) {
  .tech-card-img { max-width: 100%; height: 160px; }
  .tech-craft-title { font-size: 1.8rem; }
}

/* ─── Tech Card Image Placeholder ─── */
.tech-card-img {
  width: 100%;
  max-width: 480px;
  height: 200px;
  background: rgba(255,255,255,0.03);
  border: 1px dashed rgba(255,255,255,0.1);
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
}
.tech-card-img span {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.12);
}
.tech-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ─── Trust Bar (Homepage) ─── */
.trust-bar {
  background: var(--color-accent);
  color: var(--color-white);
  padding: var(--spacing-md) 0;
}
.trust-bar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
  text-align: center;
}
.trust-bar-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  margin-bottom: var(--spacing-sm);
  opacity: 0.95;
}
.trust-bar-items {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-sm);
}
.trust-bar-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  min-width: 120px;
}
.trust-bar-icon { font-size: 1.4rem; }
.trust-bar-item strong { font-size: 0.85rem; font-weight: 500; }
.trust-bar-item span:last-child { font-size: 0.7rem; opacity: 0.8; }
.trust-bar .btn-outline {
  border-color: var(--color-white);
  color: var(--color-white);
  font-size: 0.8rem;
  padding: 0.5rem 1.8rem;
}
.trust-bar .btn-outline:hover {
  background: var(--color-white);
  color: var(--color-accent);
}

/* ─── Page Hero (sub pages) ─── */
.page-hero {
  padding: calc(var(--header-height) + var(--spacing-xl)) 0 var(--spacing-xl);
  text-align: center;
  background: var(--color-bg-alt);
}
.page-hero-content {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}
.page-hero h1 {
  font-family: var(--font-heading);
  font-size: 2.6rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}
.page-hero p {
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ─── Trace Steps ─── */
.trace-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}
.trace-step {
  text-align: center;
  padding: var(--spacing-md);
  position: relative;
}
.trace-step-num {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-xs);
}
.trace-step-icon { font-size: 2rem; margin-bottom: var(--spacing-xs); }
.trace-step h4 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  margin-bottom: 0.4rem;
  color: var(--color-text);
}
.trace-step p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

/* ─── Trace Form ─── */
.trace-form-container {
  max-width: 560px;
  margin: 0 auto;
  padding: var(--spacing-lg);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 2px;
}
.trace-form-label {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}
.trace-form-row {
  display: flex;
  gap: var(--spacing-xs);
}
.trace-form-input {
  flex: 1;
  padding: 0.8rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  background: var(--color-bg);
  outline: none;
  transition: border-color 0.3s;
}
.trace-form-input:focus { border-color: var(--color-accent); }
.trace-form-hint {
  margin-top: var(--spacing-xs);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ─── Cert Grid ─── */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}
.cert-card {
  text-align: center;
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  background: var(--color-white);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.cert-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.06);
}
.cert-icon { font-size: 2.4rem; margin-bottom: var(--spacing-xs); }
.cert-card h4 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  margin-bottom: 0.4rem;
  color: var(--color-text);
}
.cert-card p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

/* ─── FAQ ─── */
.faq-list {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}
.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-sm) 0;
}
.faq-item summary {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  color: var(--color-text);
  cursor: pointer;
  padding: var(--spacing-xs) 0;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-family: var(--font-body);
  font-size: 1.3rem;
  color: var(--color-accent);
  transition: transform 0.3s;
}
.faq-item[open] summary::after {
  content: '−';
}
.faq-item p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
  padding: var(--spacing-xs) 0 var(--spacing-sm);
}

/* ─── btn-sm ─── */
.btn-sm { padding: 0.5rem 1.5rem; font-size: 0.8rem; }

/* ─── Hero responsive ─── */
@media (max-width: 640px) {
  .hero-brand { font-size: 2.2rem; }
  .hero-slogan { font-size: 1.1rem; }
  .hero-sub { font-size: 0.85rem; }
  .section-title { font-size: 1.8rem; }
  .btn { padding: 0.7rem 1.5rem; font-size: 0.8rem; }
  .section { padding: var(--spacing-xl) 0; }
  .cat-panel-content h3 { font-size: 1.6rem; }
  .attitude blockquote p { font-size: 1.2rem; }
  .cta-section h2 { font-size: 1.6rem; }
  .trace-steps { grid-template-columns: 1fr; }
  .certs-grid { grid-template-columns: 1fr; }
  .trace-form-row { flex-direction: column; }
  .trust-bar-items { gap: var(--spacing-sm); }
  .page-hero h1 { font-size: 2rem; }
}

/* Header lang button - always visible and clickable */
.header-lang-btn {
  margin-right: var(--spacing-sm);
  flex-shrink: 0;
}
@media (max-width: 768px) {
  .header-lang-btn {
    margin-right: var(--spacing-sm);
    order: 1;
  }
  .hamburger-toggle { order: 2; }
}

/* Language toggle link */
.lang-toggle {
  background: none;
  border: 1px solid var(--color-border);
  padding: 0.4rem 1rem;
  font-family: var(--font-body);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--color-text-light);
  cursor: pointer;
  border-radius: 2px;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all 0.2s ease;
}
.lang-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
@media (max-width: 768px) {
  .lang-toggle {
    font-size: 0.8rem;
    padding: 0.3rem 0.8rem;
    margin-right: var(--spacing-xs);
  }
}

/* .attitude-en merged into .philosophy-en */

/* Ensure philosophy-en consistency everywhere */
.attitude .philosophy-en {
  font-family: var(--font-body) !important;
  font-size: 0.85rem !important;
  font-style: italic !important;
  font-weight: 300 !important;
  color: var(--color-text-muted) !important;
  line-height: 1.65 !important;
}

.story-block { text-align: center; }
.story-block h3 { text-align: center; }

.story-block p { text-align: center; }
.story-en { text-align: center; }

/* Story: main text larger, secondary text smaller */
.story-block p[data-i18n] {
  font-size: 1.1rem;
  color: var(--color-text);
  line-height: 1.8;
}

.tech-craft-subtitle-en {
  margin-bottom: var(--spacing-lg);
}

.logo-cn {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.0rem;
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  line-height: 1.3;
  margin-top: 0.15rem;
}

/* Homepage: Discover Our Radiance section spacing */

#discover-section .section-title { margin-bottom: var(--spacing-lg); }

.categories-split { margin-top: var(--spacing-lg); }
#discover-section { padding-top: var(--spacing-xl); }

/* ICP 备案号 */
.footer-bottom .icp { margin-top: 6px; }
.footer-bottom .icp a { color: rgba(255,255,255,0.55); text-decoration: none; transition: color .2s; }
.footer-bottom .icp a:hover { color: rgba(255,255,255,0.9); }