/* ============================================
   Linjie Textiles — European B2B Aesthetic
   "Quiet Luxury" · Minimal · Editorial
   ============================================ */

:root {
  --primary: #1C2535;
  --primary-light: #2D3A4E;
  --primary-dark: #111827;
  --accent: #B8956A;
  --accent-light: #C9A77C;
  --accent-dark: #9A7B56;
  --text-dark: #1A1A1A;
  --text-medium: #4B5563;
  --text-light: #9CA3AF;
  --text-muted: #6B7280;
  --bg-white: #FFFFFF;
  --bg-light: #F7F7F5;
  --bg-warm: #F0EBE3;
  --bg-dark: #1C2535;
  --border-light: #E5E7EB;
  --border-medium: #D1D5DB;
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.10);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 50px;
  --transition: all 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
  --transition-fast: all 0.2s ease;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --max-width: 1280px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { font-family: var(--font-main); color: var(--text-dark); background: var(--bg-white); line-height: 1.7; overflow-x: hidden; }
a { text-decoration: none; color: inherit; transition: var(--transition-fast); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); line-height: 1.2; color: var(--text-dark); font-weight: 600; letter-spacing: -0.02em; }
h1 { font-size: 3.5rem; letter-spacing: -0.03em; }
h2 { font-size: 2rem; letter-spacing: -0.02em; }
h3 { font-size: 1.375rem; }
h4 { font-size: 1.125rem; }
p { margin-bottom: 1rem; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 2.5rem; }
.section { padding: 6rem 0; }
.section-header { text-align: left; margin-bottom: 4rem; max-width: 640px; }
.section-header h2 { margin-bottom: 0.75rem; font-weight: 700; }
.section-header h2::after { content: ''; display: block; width: 48px; height: 2px; background: var(--accent); margin: 1rem 0 0; }
.section-header p { color: var(--text-muted); font-size: 1.05rem; line-height: 1.6; margin: 0; }
.section-header.center { text-align: center; max-width: none; }
.section-header.center h2::after { margin: 1rem auto 0; }
.section-header.center p { max-width: 560px; margin: 0 auto; }

.btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.75rem 1.75rem; border: none; border-radius: var(--radius-pill); font-family: var(--font-main); font-size: 0.9rem; font-weight: 600; cursor: pointer; transition: var(--transition); letter-spacing: 0.01em; text-transform: uppercase; }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-light); }
.btn-accent { background: var(--accent); color: white; }
.btn-accent:hover { background: var(--accent-dark); }
.btn-outline { background: transparent; border: 1.5px solid var(--border-medium); color: var(--text-dark); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-white { background: white; color: var(--primary); }
.btn-white:hover { background: var(--bg-light); }
.btn-sm { padding: 0.5rem 1rem; font-size: 0.78rem; }

.navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(255,255,255,0.97); backdrop-filter: blur(12px); border-bottom: 1px solid transparent; transition: var(--transition); }
.navbar.scrolled { border-bottom-color: var(--border-light); }
.navbar .container { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.nav-logo { display: flex; align-items: center; gap: 0.6rem; font-size: 1.3rem; font-weight: 700; color: var(--primary); letter-spacing: -0.02em; }
.nav-logo svg { width: 32px; height: 32px; }
.nav-logo .accent { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 2.5rem; }
.nav-links a { font-weight: 500; color: var(--text-muted); font-size: 0.95rem; position: relative; padding: 0.25rem 0; transition: var(--transition-fast); }
.nav-links a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 1px; background: var(--accent); transition: width 0.3s ease; }
.nav-links a:hover, .nav-links a.active { color: var(--text-dark); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-cta { display: flex; align-items: center; gap: 1rem; }

.lang-dropdown { position: relative; display: inline-block; margin-right: 0.5rem; }
.lang-current { display: flex; align-items: center; gap: 0.4rem; padding: 0.45rem 1rem; border: 1px solid var(--border-light); border-radius: var(--radius-sm); font-size: 0.85rem; color: var(--text-dark); cursor: pointer; transition: var(--transition-fast); font-weight: 500; background: white; user-select: none; }
.lang-current:hover { border-color: var(--accent); }
.lang-current::after { content: '▾'; font-size: 0.65rem; margin-left: 0.2rem; opacity: 0.5; }
.lang-menu { position: absolute; top: calc(100% + 4px); right: 0; background: white; border: 1px solid var(--border-light); border-radius: var(--radius-sm); box-shadow: var(--shadow-md); padding: 0.25rem 0; min-width: 160px; opacity: 0; visibility: hidden; transform: translateY(-4px); transition: opacity 0.2s, transform 0.2s, visibility 0.2s; z-index: 1000; }
.lang-menu.open { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-option { display: block; padding: 0.5rem 1rem; color: var(--text-muted); font-size: 0.85rem; transition: var(--transition-fast); cursor: pointer; }
.lang-option:hover { background: var(--bg-light); color: var(--text-dark); }
.lang-option.active { color: var(--accent); font-weight: 600; }

.mobile-toggle { display: none; flex-direction: column; gap: 5px; padding: 0.5rem; cursor: pointer; background: none; border: none; }
.mobile-toggle span { display: block; width: 22px; height: 1.5px; background: var(--primary); transition: var(--transition); }
.nav-mobile { position: fixed; top: 68px; left: 0; right: 0; bottom: 0; background: white; z-index: 999; display: none; padding: 2rem; }
.nav-mobile.open { display: flex; flex-direction: column; gap: 1.5rem; }
.nav-mobile a { font-size: 1.125rem; font-weight: 500; color: var(--text-dark); }
.nav-mobile a:hover { color: var(--accent); }
.nav-mobile .btn-primary { color: #fff; background: var(--primary); }
.nav-mobile .btn-primary:hover { color: #fff; background: var(--primary-light); }
.nav-mobile .lang-dropdown { display: inline-block; font-size: 1rem; margin-top: 0.5rem; }

.hero { position: relative; min-height: 90vh; display: flex; align-items: center; background: var(--bg-light); overflow: hidden; padding-top: 68px; }
.hero .container { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; position: relative; z-index: 1; }
.hero-content { color: var(--text-dark); }
.hero-content .badge { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.4rem 1rem; background: var(--bg-warm); border-radius: var(--radius-pill); color: var(--accent-dark); font-size: 0.8rem; font-weight: 600; margin-bottom: 1.5rem; letter-spacing: 0.04em; text-transform: uppercase; }
.hero-content .badge svg { width: 14px; height: 14px; stroke: var(--accent); }
.hero-content h1 { color: var(--text-dark); font-size: 3.75rem; margin-bottom: 1.25rem; line-height: 1.1; font-weight: 700; }
.hero-content h1 .highlight { color: var(--accent); }
.hero-content p { color: var(--text-muted); font-size: 1.05rem; margin-bottom: 2.5rem; max-width: 480px; line-height: 1.6; }
.hero-actions { display: flex; gap: 0.75rem; margin-bottom: 3rem; }
.hero-actions .btn { flex-direction: column; align-items: flex-start; padding: 0.85rem 1.75rem; line-height: 1.25; gap: 0.15rem; }
.hero-actions .btn-outline { border-color: var(--primary); color: var(--primary); font-weight: 600; }
.hero-actions .btn-outline:hover { background: var(--primary); color: white; }
.hero-actions .btn-outline:hover .cta-sub { color: rgba(255,255,255,0.75); }
.hero-actions .btn .cta-sub { display: block; font-size: 0.85rem; font-weight: 600; letter-spacing: 0.02em; text-transform: none; opacity: 1; margin-top: 0.25rem; }
.hero-actions .btn-accent .cta-sub { color: rgba(255,255,255,0.95); }
.hero-actions .btn-outline .cta-sub { color: var(--accent-dark); }
.hero-stats { display: flex; gap: 3rem; }
.hero-stat { text-align: left; }
.hero-stat .number { font-size: 2rem; font-weight: 700; color: var(--text-dark); letter-spacing: -0.03em; }
.hero-stat .label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; margin-top: 0.25rem; }
.hero-visual { position: relative; }
.hero-image-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
.hero-image-card { background: linear-gradient(135deg, #F0EBE3 0%, #E2DBCF 100%); border-radius: var(--radius-md); overflow: hidden; aspect-ratio: 3/4; position: relative; transition: var(--transition); display: flex; align-items: center; justify-content: center; border: 1px solid var(--border); box-shadow: var(--shadow-sm); }
.hero-image-card:hover { transform: scale(1.02); box-shadow: var(--shadow-md); }
.hero-image-card img { width: 100%; height: 100%; object-fit: cover; display: block; }
.hero-image-card .img-placeholder { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; color: var(--text-light); font-size: 0.75rem; text-align: center; padding: 0.5rem; background-image: linear-gradient(135deg, #F0EBE3 0%, #E2DBCF 100%), repeating-linear-gradient(45deg, transparent, transparent 8px, rgba(154, 123, 79, 0.06) 8px, rgba(154, 123, 79, 0.06) 16px); position: relative; }
.hero-image-card .img-placeholder::before { content: '📷'; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: 1.5rem; opacity: 0.35; }
.hero-image-card:nth-child(2) { transform: translateY(1rem); }
.hero-image-card:nth-child(3) { transform: translateY(-0.5rem); }
.hero-image-card:nth-child(4) { transform: translateY(0.75rem); }
@media (max-width: 1200px) {
  .hero-image-card:nth-child(2) { transform: translateY(0.75rem); }
  .hero-image-card:nth-child(3) { transform: translateY(-0.35rem); }
  .hero-image-card:nth-child(4) { transform: translateY(0.5rem); }
}
.hero-float-card { position: absolute; background: white; border-radius: var(--radius-md); padding: 1rem 1.25rem; box-shadow: 0 8px 24px rgba(28, 37, 53, 0.12), 0 2px 6px rgba(28, 37, 53, 0.06); z-index: 2; border: 1px solid rgba(28, 37, 53, 0.04); }
.hero-float-card.top-right { top: -0.75rem; right: -0.75rem; }
.hero-float-card.bottom-left { bottom: 1.5rem; left: -0.75rem; }
.hero-float-card.bottom-right { bottom: 1.5rem; right: -0.75rem; }
.hero-float-card.sample-badge { display: flex; align-items: center; gap: 0.5rem; }
.hero-float-card.sample-badge .float-card-label { margin-bottom: 0; }
.float-card-label { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 0.25rem; }
.float-card-value { font-size: 1.125rem; font-weight: 700; color: var(--text-dark); }
.float-card-value.gold { color: var(--accent); }

/* --- Sample Service Banner --- */
.sample-service { background: var(--primary); padding: 2.5rem 0; }
.sample-service-inner { text-align: center; color: white; }
.service-badge-icon { margin-bottom: 0.75rem; opacity: 0.7; }
.sample-service-inner h3 { font-size: 1.6rem; font-weight: 700; color: white; margin-bottom: 0.5rem; letter-spacing: 0.02em; }
.sample-service-inner p { font-size: 0.92rem; color: rgba(255,255,255,0.75); margin-bottom: 2rem; max-width: 520px; margin-left: auto; margin-right: auto; }
.service-flow { display: flex; align-items: center; justify-content: center; gap: 1rem; }
.service-flow-step { display: flex; align-items: center; gap: 0.75rem; }
.step-icon-wrap { width: 44px; height: 44px; border-radius: 50%; border: 1.5px solid rgba(255,255,255,0.3); display: flex; align-items: center; justify-content: center; color: white; flex-shrink: 0; }
.step-icon-wrap.accent-bg { background: var(--accent); border-color: var(--accent); color: var(--primary); }
.step-text { display: flex; flex-direction: column; }
.step-text strong { font-size: 0.85rem; font-weight: 600; color: white; }
.step-text span { font-size: 0.72rem; color: rgba(255,255,255,0.55); }
.service-flow-arrow { color: rgba(255,255,255,0.35); flex-shrink: 0; }

/* --- Factory & Production Process --- */
.factory-process { background: var(--bg-light); }
.factory-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.factory-item { background: white; border-radius: var(--radius-md); overflow: hidden; transition: var(--transition); border: 1px solid var(--border-light); }
.factory-item:hover { border-color: transparent; box-shadow: var(--shadow-md); transform: translateY(-4px); }
.factory-image { aspect-ratio: 4/3; background: var(--bg-warm); display: flex; align-items: center; justify-content: center; }
.factory-image .img-placeholder { width: 100%; height: 100%; background: var(--bg-warm); display: flex; align-items: center; justify-content: center; }
.factory-image img { width: 100%; height: 100%; object-fit: cover; display: block; }
.factory-label { padding: 1.25rem 1.5rem; }
.factory-step { display: inline-block; font-size: 0.75rem; font-weight: 700; color: var(--accent); letter-spacing: 0.08em; margin-bottom: 0.5rem; }
.factory-label h4 { margin-bottom: 0.5rem; color: var(--text-dark); font-weight: 600; }
.factory-label p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.5; margin-bottom: 0; }

/* --- Factory Tour Videos --- */
.factory-video { padding: 3rem 0 4rem; background: var(--bg-light); }
.factory-video .section-header { text-align: center; margin-bottom: 2rem; }
.factory-video .section-header h2 { margin-bottom: 0.5rem; }
.factory-video .section-header p { color: var(--text-muted); max-width: 880px; margin: 0 auto; line-height: 1.7; font-size: 0.98rem; }
.video-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.75rem; max-width: 1180px; margin: 0 auto; padding: 0 1.5rem; }
.video-card { margin: 0; }
.video-frame { position: relative; border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-md); background: #000; aspect-ratio: 4/5; }
.video-frame video { width: 100%; height: 100%; display: block; object-fit: cover; cursor: pointer; }
.video-card figcaption { margin-top: 0.85rem; padding: 0 0.25rem; color: var(--text-muted); font-size: 0.92rem; line-height: 1.5; }
.video-card figcaption strong { color: var(--text-dark); font-weight: 600; }
@media (max-width: 768px) {
  .factory-video { padding: 2rem 0 2.5rem; }
  .video-grid { grid-template-columns: 1fr; gap: 1.5rem; padding: 0 1rem; }
  .video-card figcaption { font-size: 0.85rem; }
}

/* --- Blog --- */
.blog-hero { background: var(--primary); padding: 7rem 0 4.5rem; }
.blog-hero-content { text-align: center; color: white; }
.blog-hero-content h1 { font-size: 2.5rem; font-weight: 700; color: white; margin-bottom: 1.25rem; line-height: 1.3; }
.blog-hero-content p { font-size: 1.05rem; color: rgba(255,255,255,0.7); max-width: 600px; margin: 0 auto; line-height: 1.7; }
.blog-filters { background: var(--bg-light); padding: 1rem 0; border-bottom: 1px solid var(--border-light); }
.blog-filter-bar { display: flex; gap: 0.5rem; justify-content: center; flex-wrap: wrap; }
.blog-filter-btn { background: white; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 0.45rem 1rem; font-size: 0.82rem; font-weight: 500; color: var(--text-muted); cursor: pointer; transition: var(--transition); }
.blog-filter-btn:hover { border-color: var(--accent); color: var(--accent); }
.blog-filter-btn.active { background: var(--accent); color: white; border-color: var(--accent); }
.blog-list { background: var(--bg-white); }
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.blog-grid-related { grid-template-columns: repeat(3, 1fr); }
.blog-card { background: white; border-radius: var(--radius-md); border: 1px solid var(--border-light); overflow: hidden; transition: var(--transition); }
.blog-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.blog-card-featured { grid-column: span 2; }
.blog-card-link { display: block; text-decoration: none; color: inherit; }
.blog-card-image { position: relative; overflow: hidden; }
.blog-card-image img { width: 100%; aspect-ratio: 16/10; object-fit: cover; display: block; transition: transform 0.5s ease; }
.blog-card:hover .blog-card-image img { transform: scale(1.05); }
.blog-card-body { padding: 1.25rem; }
.blog-card-meta { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; }
.blog-card-meta time { font-size: 0.75rem; color: var(--text-muted); }
.blog-tag { display: inline-block; background: var(--bg-light); color: var(--accent); font-size: 0.7rem; font-weight: 600; padding: 0.2rem 0.5rem; border-radius: var(--radius-sm); letter-spacing: 0.02em; }
.blog-card-featured h2 { font-size: 1.35rem; font-weight: 700; color: var(--text-dark); line-height: 1.35; margin-bottom: 0.6rem; }
.blog-card h3 { font-size: 1.1rem; font-weight: 600; color: var(--text-dark); line-height: 1.4; margin-bottom: 0.5rem; }
.blog-card-body p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.55; margin-bottom: 0.75rem; }
.blog-card-footer { display: flex; justify-content: space-between; align-items: center; }
.blog-read-more { font-size: 0.82rem; font-weight: 600; color: var(--accent); }
.blog-reading-time { font-size: 0.72rem; color: var(--text-light); }
.related-posts { background: var(--bg-light); }

/* --- Article Detail --- */
.article-header { background: var(--bg-light); padding: 3rem 0 2rem; border-bottom: 1px solid var(--border-light); }
.article-header-content { max-width: 720px; margin: 0 auto; }
.article-breadcrumb { display: flex; gap: 0.5rem; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 1rem; }
.article-breadcrumb a { color: var(--accent); text-decoration: none; }
.article-meta { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1rem; }
.article-reading-time { font-size: 0.75rem; color: var(--text-light); }
.article-header-content h1 { font-size: 2rem; font-weight: 700; color: var(--text-dark); line-height: 1.3; margin-bottom: 0.75rem; }
.article-subtitle { font-size: 1rem; color: var(--text-muted); line-height: 1.55; margin-bottom: 1.5rem; }
.article-author { display: flex; align-items: center; gap: 0.75rem; padding: 0.75rem 0; }
.author-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--bg-light); display: flex; align-items: center; justify-content: center; }
.author-info strong { font-size: 0.85rem; color: var(--text-dark); }
.author-info span { font-size: 0.72rem; color: var(--text-muted); display: block; }
.article-body { background: white; padding: 2.5rem 0; }
.article-content { max-width: 720px; margin: 0 auto; }
.article-featured-image { margin-bottom: 2rem; border-radius: var(--radius-md); overflow: hidden; }
.article-text { font-size: 1rem; color: var(--text-dark); line-height: 1.75; }
.article-text h2 { font-size: 1.5rem; font-weight: 700; color: var(--text-dark); margin: 2rem 0 0.75rem; }
.article-text p { margin-bottom: 1rem; }
.article-text ul, .article-text ol { margin: 1rem 0; padding-left: 1.5rem; }
.article-text li { margin-bottom: 0.5rem; }
.article-cta-box { background: var(--bg-light); border: 1px solid var(--border-light); border-radius: var(--radius-md); padding: 1.5rem; margin-top: 2.5rem; text-align: center; }
.article-cta-box h3 { font-size: 1.1rem; font-weight: 700; color: var(--text-dark); margin-bottom: 0.5rem; }
.article-cta-box p { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 1rem; }

/* --- Quick Product Showcase --- */
.quick-products { background: var(--bg-white); }
.quick-products-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
.quick-products .product-card { background: var(--bg-light); border-radius: var(--radius-md); overflow: hidden; transition: var(--transition); border: 1px solid transparent; }
.quick-products .product-card:hover { background: white; border-color: var(--border-light); box-shadow: var(--shadow-sm); }
.quick-products .product-image { aspect-ratio: 3/4; background: var(--bg-warm); max-height: 380px; width: 100%; }
.quick-products .product-image .img-placeholder { width: 100%; height: 100%; background: var(--bg-warm); display: flex; align-items: center; justify-content: center; }
.quick-products .product-image img { width: 100%; height: 100%; object-fit: cover; display: block; }
.quick-products .product-info { padding: 1rem 1.25rem; }
.quick-products .product-info h4 { margin-bottom: 0.4rem; font-size: 1rem; }
.quick-products .product-meta { margin-bottom: 0; }

.categories { background: var(--bg-white); }
.categories-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
.category-card { background: var(--bg-light); border-radius: var(--radius-md); padding: 2rem 1.75rem; text-align: center; transition: var(--transition); cursor: pointer; border: 1px solid transparent; }
.category-card:hover { background: white; border-color: var(--border-light); box-shadow: var(--shadow-sm); }
.category-icon { width: 64px; height: 64px; margin: 0 auto 1rem; background: var(--bg-warm); border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: var(--transition); }
.category-card:hover .category-icon { background: var(--accent); }
.category-icon svg { width: 32px; height: 32px; stroke: var(--accent-dark); fill: none; stroke-width: 1.5; transition: var(--transition); }
.category-card:hover .category-icon svg { stroke: white; }
.category-card h4 { margin-bottom: 0.5rem; color: var(--text-dark); font-weight: 600; }
.category-card p { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 0; line-height: 1.5; }
.category-count { display: inline-block; margin-top: 0.75rem; padding: 0.2rem 0.75rem; border: 1px solid var(--border-light); border-radius: var(--radius-pill); font-size: 0.75rem; color: var(--text-muted); font-weight: 500; }

.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.product-card { background: white; border-radius: var(--radius-md); overflow: hidden; transition: var(--transition); border: 1px solid var(--border-light); }
.product-card:hover { border-color: transparent; box-shadow: var(--shadow-md); }
.product-image { aspect-ratio: 4/5; background: var(--bg-light); display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.product-image .img-placeholder { color: var(--text-muted); font-size: 0.85rem; text-align: center; padding: 1rem; width: 100%; height: 100%; background: var(--bg-light); display: flex; align-items: center; justify-content: center; font-weight: 500; }
.product-tag { display: none; }
.product-info { padding: 1.25rem; }
.product-info h4 { margin-bottom: 0.5rem; font-weight: 600; }
.product-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.75rem; }
.product-material { font-size: 0.8rem; color: var(--text-muted); }
.product-moq { font-size: 0.8rem; color: var(--accent-dark); font-weight: 600; }
.product-desc { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 1rem; line-height: 1.5; }
.product-actions { display: flex; gap: 0.5rem; }
.product-actions .btn { padding: 0.45rem 1rem; font-size: 0.78rem; }

.advantages-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 3rem; }
.advantage-card { padding: 2rem; border-radius: var(--radius-md); background: white; border: 1px solid transparent; transition: var(--transition); position: relative; }
.advantage-card:hover { background: white; box-shadow: 0 12px 32px rgba(43, 69, 112, 0.1); transform: translateY(-4px); border-color: rgba(184, 149, 106, 0.2); }
.advantage-icon { width: 48px; height: 48px; border-radius: 12px; background: linear-gradient(135deg, rgba(184, 149, 106, 0.12) 0%, rgba(184, 149, 106, 0.05) 100%); color: var(--accent); display: flex; align-items: center; justify-content: center; margin-bottom: 1rem; transition: var(--transition); }
.advantage-icon svg { width: 26px; height: 26px; }
.advantage-card:hover .advantage-icon { background: linear-gradient(135deg, var(--accent) 0%, #a17d57 100%); color: white; transform: scale(1.08); }
.advantage-number { font-size: 0.75rem; color: var(--accent); letter-spacing: 0.12em; margin-bottom: 0.5rem; font-weight: 600; }
.advantage-card h4 { margin-bottom: 0.75rem; color: var(--text-dark); font-weight: 600; font-size: 1.1rem; }
.advantage-card p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.65; margin-bottom: 1rem; }
.advantage-list { list-style: none; padding: 0; margin: 0; border-top: 1px dashed var(--border-light); padding-top: 1rem; }
.advantage-list li { color: var(--text-muted); font-size: 0.85rem; line-height: 1.5; padding: 0.3rem 0 0.3rem 1.25rem; position: relative; }
.advantage-list li::before { content: ""; position: absolute; left: 0; top: 0.85rem; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }

/* Trust Stats Bar */
.trust-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 2.5rem; padding: 1.75rem 2rem; background: white; border-radius: var(--radius-md); box-shadow: 0 4px 16px rgba(43, 69, 112, 0.06); border-top: 2px solid var(--accent); }
.trust-stat { text-align: center; padding: 0.5rem 1rem; position: relative; }
.trust-stat:not(:last-child)::after { content: ""; position: absolute; right: 0; top: 20%; height: 60%; width: 1px; background: var(--border-light); }
.trust-stat-num { font-size: 2rem; font-weight: 700; color: var(--primary); line-height: 1.2; letter-spacing: -0.02em; margin-bottom: 0.25rem; }
.trust-stat-label { font-size: 0.82rem; color: var(--text-muted); letter-spacing: 0.04em; }

/* Trust badges — certification card grid */
.advantages-trust { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1.25rem; margin-top: 3rem; padding-top: 2.5rem; border-top: 1px solid var(--border-light); }
.cert-card { background: white; border-radius: var(--radius-md); border: 1px solid var(--border-light); padding: 1.5rem 1rem; text-align: center; transition: var(--transition); cursor: default; position: relative; overflow: hidden; }
.cert-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--accent), #a17d57); opacity: 0; transition: opacity 0.25s ease; }
.cert-card:hover { border-color: var(--accent); box-shadow: 0 8px 24px rgba(180,140,100,0.12); transform: translateY(-2px); }
.cert-card:hover::before { opacity: 1; }
.cert-icon { width: 44px; height: 44px; margin: 0 auto 0.75rem; display: flex; align-items: center; justify-content: center; background: var(--bg-warm); border-radius: 50%; color: var(--accent); transition: var(--transition); }
.cert-card:hover .cert-icon { background: var(--accent); color: white; transform: scale(1.06); }
.cert-icon svg { width: 22px; height: 22px; }
.cert-name { font-size: 0.82rem; font-weight: 600; color: var(--text-dark); margin-bottom: 0.35rem; letter-spacing: 0.02em; }
.cert-desc { font-size: 0.75rem; color: var(--text-muted); line-height: 1.4; }
@media (max-width: 900px) { .advantages-trust { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); } }
@media (max-width: 600px) { .advantages-trust { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; } }

.process { background: var(--bg-white); }
.process-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1.5rem; position: relative; }
.process-steps::before { content: ''; position: absolute; top: 28px; left: 10%; right: 10%; height: 1px; background: var(--border-light); }
.process-step { text-align: center; position: relative; z-index: 1; }
.step-photo { aspect-ratio: 3/2; background: var(--bg-warm); border-radius: var(--radius-sm); margin-bottom: 0.75rem; overflow: hidden; display: flex; align-items: center; justify-content: center; }
.step-photo .img-placeholder { width: 100%; height: 100%; background: var(--bg-warm); display: flex; align-items: center; justify-content: center; }
.step-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.step-number { width: 48px; height: 48px; border-radius: 50%; background: var(--bg-light); border: 1px solid var(--border-light); color: var(--text-dark); font-size: 0.9rem; font-weight: 700; display: flex; align-items: center; justify-content: center; margin: 0 auto 1rem; transition: var(--transition); }
.process-step:hover .step-number { background: var(--accent); color: white; border-color: var(--accent); }
.step-title { font-weight: 600; color: var(--text-dark); margin-bottom: 0.5rem; font-size: 0.95rem; }
.step-desc { font-size: 0.8rem; color: var(--text-muted); line-height: 1.5; }

.stats-banner { background: var(--primary); padding: 4rem 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }
.stat-item { text-align: center; }
.stat-number { font-size: 2.5rem; font-weight: 700; color: white; margin-bottom: 0.5rem; letter-spacing: -0.03em; }
.stat-label { color: rgba(255,255,255,0.6); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; }

.testimonials { background: var(--bg-light); }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.testimonial-card { background: white; border-radius: var(--radius-md); padding: 2rem; position: relative; border: 1px solid var(--border-light); transition: var(--transition); }
.testimonial-card:hover { border-color: transparent; box-shadow: var(--shadow-sm); }
.testimonial-quote { font-size: 1.5rem; color: var(--accent); opacity: 0.4; line-height: 1; margin-bottom: 0.75rem; }
.testimonial-text { color: var(--text-medium); font-size: 0.9rem; line-height: 1.6; margin-bottom: 1.5rem; }
.testimonial-author { display: flex; align-items: center; gap: 0.75rem; }
.author-avatar { width: 44px; height: 44px; border-radius: 50%; background: var(--bg-warm); display: flex; align-items: center; justify-content: center; font-weight: 700; color: var(--accent-dark); font-size: 0.9rem; }
.author-name { font-weight: 600; color: var(--text-dark); font-size: 0.9rem; }
.author-role { font-size: 0.8rem; color: var(--text-muted); }

.cta-section { background: var(--primary); padding: 5rem 0; text-align: center; }
.cta-section h2 { color: white; margin-bottom: 1rem; font-weight: 700; }
.cta-section p { color: rgba(255,255,255,0.75); font-size: 1.05rem; max-width: 560px; margin: 0 auto 2rem; line-height: 1.6; }
.cta-actions { display: flex; gap: 0.75rem; justify-content: center; }
.cta-section .btn-outline { background: transparent; border: 1.5px solid rgba(255,255,255,0.5); color: white; }
.cta-section .btn-outline:hover { background: rgba(255,255,255,0.1); border-color: white; color: white; }

.footer { background: var(--primary-dark); color: white; padding: 4rem 0 2rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; margin-bottom: 3rem; }
.footer-brand h3 { color: white; margin-bottom: 1rem; font-size: 1.25rem; font-weight: 700; letter-spacing: -0.02em; }
.footer-brand h3 .accent { color: var(--accent); }
.footer-brand p { color: rgba(255,255,255,0.6); font-size: 0.9rem; margin-bottom: 1.5rem; line-height: 1.6; }
.footer-social { display: flex; gap: 0.75rem; }
.footer-social a { width: 36px; height: 36px; border-radius: 50%; border: 1px solid rgba(255,255,255,0.15); display: flex; align-items: center; justify-content: center; transition: var(--transition-fast); }
.footer-social a:hover { border-color: var(--accent); background: var(--accent); }
.footer-social a svg { width: 16px; height: 16px; fill: white; }
.footer-column h4 { color: var(--accent); margin-bottom: 1rem; font-size: 0.85rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; }
.footer-column a { display: block; color: rgba(255,255,255,0.6); padding: 0.35rem 0; font-size: 0.85rem; }
.footer-column a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 2rem; display: flex; justify-content: space-between; align-items: center; }
.footer-bottom p { color: rgba(255,255,255,0.4); font-size: 0.8rem; margin-bottom: 0; }
.footer-bottom-links { display: flex; gap: 1.5rem; }
.footer-bottom-links a { color: rgba(255,255,255,0.4); font-size: 0.8rem; }
.footer-bottom-links a:hover { color: var(--accent); }

/* --- Product Page --- */
.product-filters { display: flex; gap: 0.5rem; margin-bottom: 3.5rem; flex-wrap: wrap; justify-content: center; }
.filter-btn { padding: 0.5rem 1.25rem; border: 1px solid var(--border-light); border-radius: var(--radius-pill); background: transparent; color: var(--text-muted); font-weight: 500; cursor: pointer; transition: var(--transition-fast); font-family: var(--font-main); font-size: 0.85rem; }
.filter-btn:hover { border-color: var(--text-dark); color: var(--text-dark); }
.filter-btn.active { background: var(--primary); color: white; border-color: var(--primary); }
.products-full-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.product-detail-card { background: white; border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--border-light); transition: var(--transition); }
.product-detail-card:hover { border-color: transparent; box-shadow: var(--shadow-md); }
.product-detail-image { aspect-ratio: 3/4; background: var(--bg-light); display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.product-detail-image .img-placeholder { color: var(--text-muted); font-size: 0.85rem; font-weight: 500; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.4rem; width: 100%; height: 100%; border: 2px dashed var(--border-light); background: repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(0,0,0,0.02) 10px, rgba(0,0,0,0.02) 20px); }
.product-detail-image .img-placeholder::before { content: "📷"; font-size: 1.6rem; opacity: 0.5; }
.product-detail-image .img-placeholder .ph-text { font-size: 0.8rem; }
.product-detail-image > img { width: 100%; height: 100%; object-fit: cover; display: block; }
.product-detail-info { padding: 1.25rem; }
.product-detail-info h4 { color: var(--text-dark); margin-bottom: 0.5rem; font-weight: 600; }
.product-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; margin-bottom: 1rem; }
.spec-item { display: flex; justify-content: space-between; padding: 0.4rem 0.75rem; background: var(--bg-light); border-radius: var(--radius-sm); font-size: 0.8rem; }
.spec-label { color: var(--text-muted); }
.spec-value { color: var(--text-dark); font-weight: 500; }

/* --- About & Contact --- */
.about-hero, .contact-hero { background: var(--bg-light); padding: 6rem 0 4rem; text-align: center; }
.about-hero h1, .contact-hero h1 { color: var(--text-dark); margin-bottom: 1rem; }
.about-hero p, .contact-hero p { color: var(--text-muted); max-width: 560px; margin: 0 auto; line-height: 1.6; }
/* Products page hero — extra breathing room around title & subtitle */
.products-hero { padding: 5.5rem 0 5rem !important; }
.products-hero h1 { margin-bottom: 1.75rem !important; font-size: 2.5rem; }
.products-hero p { margin-top: 0.5rem !important; font-size: 1.05rem; }
.about-intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.about-intro-text h3 { color: var(--text-dark); margin-bottom: 1rem; }
.about-intro-text p { color: var(--text-medium); margin-bottom: 1rem; }
.about-factory { aspect-ratio: 4/3; background: linear-gradient(135deg, var(--bg-warm) 0%, #E8E0D2 100%); display: flex; flex-direction: column; align-items: center; justify-content: center; border-radius: var(--radius-md); color: var(--text-muted); font-weight: 500; padding: 2rem 1.75rem; box-shadow: inset 0 1px 0 rgba(255,255,255,0.6), 0 1px 2px rgba(0,0,0,0.04); gap: 1.25rem; }
.factory-stat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem 1.75rem; width: 100%; max-width: 360px; }
.factory-stat { display: flex; flex-direction: column; align-items: center; text-align: center; }
.factory-stat .stat-num { font-size: 2rem; font-weight: 700; color: var(--text-dark); line-height: 1.1; letter-spacing: -0.02em; }
.factory-stat .stat-label { font-size: 0.78rem; color: var(--text-muted); font-weight: 500; margin-top: 0.25rem; letter-spacing: 0.02em; }
.factory-summary { text-align: center; max-width: 380px; }
.factory-summary h4 { font-size: 1.05rem; color: var(--text-dark); margin-bottom: 0.5rem; font-weight: 600; }
.factory-summary p { font-size: 0.85rem; color: var(--text-medium); line-height: 1.55; font-weight: 400; margin: 0; }
.certifications-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
.cert-card { background: var(--bg-light); border-radius: var(--radius-md); padding: 1.75rem; text-align: center; border: 1px solid transparent; transition: var(--transition); }
.cert-card:hover { background: white; border-color: var(--border-light); box-shadow: var(--shadow-sm); }
.cert-icon { width: 56px; height: 56px; margin: 0 auto 0.75rem; background: var(--bg-warm); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.25rem; color: var(--accent); }
.cert-card h4 { font-size: 0.95rem; margin-bottom: 0.5rem; font-weight: 600; }
.cert-card p { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 0; line-height: 1.5; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.contact-form-card { background: white; border-radius: var(--radius-md); padding: 2.5rem; border: 1px solid var(--border-light); }
.contact-form-card h3 { color: var(--text-dark); margin-bottom: 1.5rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-weight: 500; color: var(--text-medium); margin-bottom: 0.5rem; font-size: 0.85rem; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 0.75rem 1rem; border: 1px solid var(--border-light); border-radius: var(--radius-sm); font-family: var(--font-main); font-size: 0.9rem; transition: var(--transition-fast); background: var(--bg-light); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--accent); background: white; box-shadow: 0 0 0 3px rgba(184,149,106,0.1); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.contact-info-card { background: var(--primary); border-radius: var(--radius-md); padding: 2.5rem; color: white; }
.contact-info-card h3 { color: var(--accent); margin-bottom: 1.5rem; font-weight: 600; }
.contact-detail { display: flex; align-items: flex-start; gap: 1rem; margin-bottom: 2rem; }
.contact-detail-icon { width: 44px; height: 44px; border-radius: 50%; background: rgba(184,149,106,0.15); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-detail-icon svg { width: 20px; height: 20px; stroke: var(--accent); fill: none; stroke-width: 2; }
.contact-detail h5 { color: var(--accent); font-size: 0.8rem; font-weight: 600; margin-bottom: 0.25rem; text-transform: uppercase; letter-spacing: 0.04em; }
.contact-detail p { color: rgba(255,255,255,0.8); font-size: 0.9rem; margin-bottom: 0; }
.contact-social { display: flex; gap: 0.75rem; margin-top: 2rem; }
.contact-social a { width: 40px; height: 40px; border-radius: 50%; border: 1px solid rgba(255,255,255,0.15); display: flex; align-items: center; justify-content: center; transition: var(--transition-fast); }
.contact-social a:hover { border-color: var(--accent); background: var(--accent); }
.contact-social a svg { width: 18px; height: 18px; fill: white; }
.footer-social[hidden], .contact-social[hidden] { display: none !important; }

/* --- Responsive --- */
@media (max-width: 1024px) {
  h1 { font-size: 2.75rem; }
  h2 { font-size: 1.75rem; }
  .hero .container { grid-template-columns: 1fr; text-align: center; }
  .hero-content p { margin: 0 auto 2.5rem; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-stat { text-align: center; }
  .hero-visual { display: none; }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .factory-grid { grid-template-columns: repeat(2, 1fr); }
  /* 平板 (481-768) 横向宽度够，quick-products 拉长为 4 列避免纵向过高 */
  .quick-products-grid { grid-template-columns: repeat(4, 1fr); gap: 0.85rem; }
  .quick-products .product-image { max-height: 480px; }
  .products-grid, .products-full-grid { grid-template-columns: repeat(2, 1fr); }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(3, 1fr); }
  .process-steps::before { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .about-intro-grid { grid-template-columns: 1fr; }
  .certifications-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .section-header { text-align: center; max-width: none; }
  .section-header h2::after { margin: 1rem auto 0; }
  /* Hero visual: 在 ≤1024 显示为 2x2 紧凑网格（之前display:none直接砍掉，移动端看不到图） */
  .hero-visual { display: block; max-width: 480px; margin: 0 auto; }
  .hero-image-grid { gap: 0.5rem; }
  .hero-image-card { aspect-ratio: 1/1; }
  .hero-image-card:nth-child(2),
  .hero-image-card:nth-child(3),
  .hero-image-card:nth-child(4) { transform: none; }
  /* 浮动卡片缩小，避免压住图 */
  .hero-float-card { padding: 0.65rem 0.9rem; }
  .hero-float-card .float-card-label { font-size: 0.6rem; }
  .hero-float-card .float-card-value { font-size: 0.95rem; }
  .hero-float-card.top-right { top: -0.5rem; right: -0.3rem; }
  .hero-float-card.bottom-left { bottom: 1rem; left: -0.3rem; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .hero-content h1 { font-size: 3rem; }
  .nav-links { gap: 1.75rem; }
  .about-hero, .contact-hero { padding: 5rem 0 3rem; }
}

@media (max-width: 768px) {
  .section { padding: 2rem 0; }
  .container { padding: 0 1.25rem; }
  .nav-links { display: none; }
  .mobile-toggle { display: flex; }
  /* 顶栏直接显示语言切换器，紧凑尺寸与 Get Quote 按钮并排 */
  .nav-cta .lang-dropdown { display: inline-block; margin-right: 0; }
  .nav-cta .lang-current { padding: 0.35rem 0.6rem; font-size: 0.75rem; gap: 0.25rem; }
  .nav-cta .lang-current::after { margin-left: 0; }
  .nav-cta .lang-menu { min-width: 150px; right: 0; }
  /* 汉堡菜单内已不需要重复的语言切换 */
  .nav-mobile .lang-dropdown { display: none; }
  .hero { min-height: 75vh; padding-top: 68px; }
  /* Mobile: 给 hero badge 留出 nav bar 之外的额外呼吸空间 */
  .hero-content .badge { margin-top: 1.5rem; }
  .hero-content h1 { font-size: 2.25rem; }
  .hero-content p { font-size: 1rem; }
  .hero-actions { flex-wrap: wrap; }
  .hero-stats { flex-wrap: wrap; gap: 1.5rem; justify-content: center; }
  .hero-stat { min-width: 80px; }
  /* Hero visual 在 768px 以下仍然可见但更紧凑 */
  .hero-visual { max-width: 360px; margin: 0 auto; }
  .hero-image-card { aspect-ratio: 1/1; }
  .categories-grid { grid-template-columns: 1fr 1fr; }
  .factory-grid { grid-template-columns: 1fr 1fr; }
  .quick-products-grid { grid-template-columns: 1fr 1fr; }
  .blog-grid, .blog-grid-related { grid-template-columns: 1fr 1fr; }
  .blog-card-featured { grid-column: span 2; }
  .category-card { padding: 1.5rem; }
  .category-icon { width: 56px; height: 56px; }
  .products-grid, .products-full-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .product-detail-info { padding: 0.9rem; }
  .product-detail-info h4 { font-size: 0.92rem; margin-bottom: 0.4rem; }
  .product-specs { grid-template-columns: 1fr; gap: 0.35rem; margin-bottom: 0.75rem; }
  .spec-item { padding: 0.3rem 0.55rem; font-size: 0.72rem; }
  .product-detail-info .btn { padding: 0.55rem 1rem; font-size: 0.78rem; }
  .advantages-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 1.25rem; gap: 0.65rem; }
  .advantage-card { min-width: 0; padding: 0.8rem; }
  .advantage-icon { width: 32px; height: 32px; border-radius: 7px; margin-bottom: 0.4rem; }
  .advantage-icon svg { width: 17px; height: 17px; }
  .advantage-number { top: 0.65rem; right: 0.65rem; font-size: 1.45rem; }
  .advantage-card h4 { font-size: 0.85rem; line-height: 1.3; margin-bottom: 0.3rem; }
  .advantage-card p { font-size: 0.72rem; line-height: 1.4; margin-bottom: 0.5rem; }
  .advantage-list { padding-top: 0.45rem; }
  .advantage-list li { font-size: 0.68rem; padding: 0.12rem 0 0.12rem 0.85rem; line-height: 1.35; overflow-wrap: anywhere; }
  .advantage-list li::before { top: 0.5rem; width: 4px; height: 4px; }
  .trust-stats { grid-template-columns: 1fr 1fr; gap: 0.75rem 0; padding: 0.85rem 0.75rem; margin-top: 1.5rem; }
  .trust-stat:not(:last-child)::after { display: none; }
  .trust-stat:nth-child(-n+2)::after { content: ""; position: absolute; right: 0; top: 10%; height: 80%; width: 1px; background: var(--border-light); display: block; }
  .trust-stat-num { font-size: 1.4rem; }
  .trust-stat-label { font-size: 0.72rem; }
  .advantages-trust { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.4rem; margin-top: 1rem; padding-top: 0.75rem; }
  .advantages-trust .cert-card { flex: 0 0 113px; width: 113px; }
  .cert-card { padding: 0.55rem 0.35rem; }
  .cert-icon { width: 26px; height: 26px; margin-bottom: 0.3rem; }
  .cert-icon svg { width: 14px; height: 14px; }
  .cert-name { font-size: 0.66rem; margin-bottom: 0.15rem; line-height: 1.25; }
  .cert-desc { font-size: 0.58rem; line-height: 1.25; }
  .trust-tag { font-size: 0.78rem; padding: 0.4rem 0.85rem; }
  /* Process 5步：768px 改2列网格 + 图片比例更紧凑 */
  .process-steps { grid-template-columns: 1fr 1fr; gap: 1.25rem; }
  .step-photo { aspect-ratio: 16/10; margin-bottom: 0.6rem; }
  .step-number { width: 40px; height: 40px; font-size: 0.85rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-number { font-size: 2rem; }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; justify-content: center; }
  .testimonial-card { padding: 1.1rem; }
  .testimonial-card:nth-child(3) { grid-column: 1 / -1; max-width: 60%; margin: 0 auto; }
  .testimonial-quote { font-size: 1.2rem; margin-bottom: 0.5rem; }
  .testimonial-text { font-size: 0.78rem; line-height: 1.55; margin-bottom: 1rem; }
  .testimonial-author { gap: 0.6rem; }
  .author-avatar { width: 36px; height: 36px; font-size: 0.78rem; }
  .author-name { font-size: 0.82rem; }
  .author-role { font-size: 0.72rem; }
  /* footer 品牌区占满整行，下方 3 列分类并排（每列内链接改为 2 列） */
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 1.5rem 1.25rem; }
  .footer-brand { grid-column: 1 / -1; text-align: center; }
  .footer-brand p { max-width: 360px; margin-left: auto; margin-right: auto; }
  .footer-links-col { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 0.5rem; align-items: start; }
  .footer-links-col h4 { grid-column: 1 / -1; margin-bottom: 0.2rem; font-size: 0.85rem; }
  .footer-links-col a { font-size: 0.78rem; line-height: 1.4; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
  .footer-bottom-links { justify-content: center; }
  .certifications-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .product-filters { justify-content: flex-start; overflow-x: auto; flex-wrap: nowrap; padding-bottom: 0.5rem; -webkit-overflow-scrolling: touch; }
  .cta-actions { flex-direction: column; align-items: center; }
  .cta-actions .btn { width: 100%; max-width: 280px; justify-content: center; }
  .about-hero, .contact-hero { padding: 5rem 0 3rem; }
  .about-hero h1, .contact-hero h1 { font-size: 2rem; }
  /* Sample Service：横排 + 紧凑（仿PC端布局） */
  .sample-service { padding: 1.75rem 0; }
  .sample-service-inner h3 { font-size: 1.2rem; margin-bottom: 0.35rem; }
  .sample-service-inner p { font-size: 0.82rem; margin-bottom: 1rem; line-height: 1.5; }
  .service-badge-icon { margin-bottom: 0.5rem; }
  .service-badge-icon svg { width: 22px; height: 22px; }
  .service-flow { flex-direction: row; gap: 0.5rem; padding: 0 0.25rem; flex-wrap: nowrap; }
  .service-flow-step { flex-direction: row; width: auto; max-width: none; margin: 0; padding: 0; background: transparent; border-radius: 0; gap: 0.5rem; }
  .service-flow-arrow { transform: none; }
  .service-flow-arrow svg { width: 14px; height: 14px; }
  .step-icon-wrap { width: 32px; height: 32px; }
  .step-icon-wrap svg { width: 16px; height: 16px; }
  .step-text strong { font-size: 0.78rem; line-height: 1.2; }
  .step-text span { font-size: 0.66rem; line-height: 1.2; }
  /* Video grid：移动端单列但限制最大高度 */
  .video-grid { gap: 1.25rem; }
  .video-frame { aspect-ratio: 16/10; }
  /* factory 9张图移动端：2列网格，更紧凑 */
  .factory-grid { grid-template-columns: 1fr 1fr; gap: 1rem; }
  .factory-image { aspect-ratio: 4/3; }
  .factory-label { padding: 0.85rem 1rem; }
  .factory-label h4 { font-size: 0.95rem; }
  .factory-step { font-size: 0.7rem; margin-bottom: 0.25rem; }
}

@media (max-width: 480px) {
  html { font-size: 14px; }
  .hero-content h1 { font-size: 1.75rem; }
  /* CTA按钮移动端：保持column布局（主标+副标），宽度100% */
  .hero-actions { flex-direction: column; gap: 0.75rem; align-items: stretch; }
  .hero-actions .btn { width: 100%; max-width: 100%; padding: 0.95rem 1.25rem; align-items: center; text-align: center; }
  .hero-stats { gap: 1rem; }
  .hero-stat .number { font-size: 1.5rem; }
  .hero-stat .label { font-size: 0.75rem; }
  /* Hero visual：单列纵向显示4张图 */
  .hero-visual { max-width: 320px; }
  .hero-image-grid { grid-template-columns: 1fr 1fr; gap: 0.4rem; }
  .hero-image-card { aspect-ratio: 1/1; }
  .hero-float-card { padding: 0.5rem 0.7rem; }
  .hero-float-card .float-card-label { font-size: 0.55rem; }
  .hero-float-card .float-card-value { font-size: 0.85rem; }
  /* categories：单列 */
  .categories-grid { grid-template-columns: 1fr; }
  /* factory：保持2列网格，9张图才不会纵向太长 */
  .factory-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
  .factory-image { aspect-ratio: 1/1; }
  .factory-label { padding: 0.75rem 0.85rem; }
  .factory-label h4 { font-size: 0.85rem; }
  .factory-label p { font-size: 0.75rem; line-height: 1.4; }
  .quick-products-grid { grid-template-columns: repeat(2, 160px); gap: 0.75rem; justify-content: center; }
  .quick-products .product-info { padding: 0.65rem 0.75rem; }
  .quick-products .product-info h4 { font-size: 0.88rem; margin-bottom: 0.25rem; }
  .quick-products .product-image { max-height: 240px; }
  .blog-grid, .blog-grid-related { grid-template-columns: 1fr 1fr; gap: 0.85rem; }
  .blog-card-featured { grid-column: span 2; }
  .blog-card-body { padding: 0.85rem; }
  .blog-card-body h3, .blog-card h3 { font-size: 0.9rem; line-height: 1.35; margin-bottom: 0.4rem; }
  .blog-card-featured h2 { font-size: 1.05rem; }
  .blog-card-body p { font-size: 0.78rem; line-height: 1.5; margin-bottom: 0.6rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
  .blog-card-meta { margin-bottom: 0.5rem; gap: 0.45rem; }
  .blog-tag { font-size: 0.62rem; padding: 0.15rem 0.4rem; }
  .blog-card-meta time { font-size: 0.68rem; }
  .blog-read-more { font-size: 0.72rem; }
  .blog-reading-time { font-size: 0.65rem; }
  .blog-hero-content h1 { font-size: 1.75rem; }
  .article-header-content h1 { font-size: 1.5rem; }
  .category-card { padding: 1.25rem; }
  .category-icon { width: 50px; height: 50px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 1rem; }
  .stat-number { font-size: 1.75rem; }
  .stat-label { font-size: 0.8rem; }
  .product-specs { grid-template-columns: 1fr; }
  .certifications-grid { grid-template-columns: 1fr; }
  .product-info { padding: 1rem; }
  .product-actions { flex-direction: column; }
  .product-actions .btn { width: 100%; justify-content: center; }
  .testimonial-card { padding: 0.85rem; }
  .testimonial-card:nth-child(3) { max-width: 70%; }
  .testimonial-quote { font-size: 1.05rem; margin-bottom: 0.4rem; }
  .testimonial-text { font-size: 0.72rem; line-height: 1.5; margin-bottom: 0.85rem; }
  .author-avatar { width: 32px; height: 32px; font-size: 0.72rem; }
  .advantage-card { padding: 0.75rem; }
  .contact-form-card, .contact-info-card { padding: 1.5rem; }
  /* contact-hero 顶部增加 padding，让标题不被 navbar 遮挡 */
  .contact-hero { padding: 7rem 0 2.5rem; }
  .contact-hero h1 { font-size: 1.6rem; margin-bottom: 0.65rem; }
  .contact-hero p { font-size: 0.85rem; line-height: 1.5; }
  /* 表单：成对字段 2 列并排，独立字段单列 */
  .form-row { grid-template-columns: 1fr 1fr; gap: 0.85rem; }
  .form-group { margin-bottom: 1rem; }
  .form-group label { font-size: 0.78rem; margin-bottom: 0.35rem; }
  .form-group input, .form-group select, .form-group textarea { padding: 0.6rem 0.75rem; font-size: 0.85rem; }
  .form-group textarea { min-height: 90px; }
  .contact-form-card h3 { font-size: 1.1rem; margin-bottom: 1rem; }
  .section-header h2 { font-size: 1.5rem; }
  .section-header p { font-size: 0.95rem; }
  /* process 5步：双列并排 + 紧凑 */
  .process-steps { grid-template-columns: 1fr 1fr; gap: 1rem 0.75rem; justify-content: center; }
  .process-step { max-width: 100%; padding: 0 0.25rem; }
  .process-step:nth-child(5) { grid-column: 1 / -1; max-width: 50%; margin: 0 auto; }
  .step-photo { aspect-ratio: 16/10; margin-bottom: 0.4rem; }
  .step-number { width: 32px; height: 32px; font-size: 0.78rem; margin: 0 auto 0.5rem; }
  .step-title { font-size: 0.85rem; margin-bottom: 0.25rem; }
  .step-desc { font-size: 0.72rem; line-height: 1.45; }
  .btn { padding: 0.75rem 1.5rem; font-size: 0.85rem; }
  .footer-social a { width: 36px; height: 36px; }
}

/* --- Animations — subtle --- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}