/* ========================================
   ER Lighting Premium Theme v3.0
   高级感 + 互动感设计
   ======================================== */

:root {
    --color-primary: #1a1a1a;
    --color-gold: #C9A962;
    --color-gold-dark: #B8943D;
    --color-cream: #FAF8F5;
    --color-light: #F5F3F0;
    --color-white: #ffffff;
    --color-text: #2D2D2D;
    --color-text-light: #6B6B6B;
    --color-border: #E8E6E3;
    --font-heading: 'Cormorant Garamond', serif;
    --font-body: 'Inter', sans-serif;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow: 0 8px 30px rgba(0,0,0,0.08);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
    --header-height: 90px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); font-size: 16px; line-height: 1.7; color: var(--color-text); background: var(--color-white); overflow-x: hidden; -webkit-font-smoothing: antialiased; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
.container { max-width: 1400px; margin: 0 auto; padding: 0 40px; }

h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); font-weight: 500; line-height: 1.2; color: var(--color-primary); }
h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(2rem, 4vw, 3.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }

.section-label { display: inline-block; font-family: var(--font-body); font-size: 11px; font-weight: 600; letter-spacing: 3px; text-transform: uppercase; color: var(--color-gold); margin-bottom: 20px; position: relative; padding-left: 50px; }
.section-label::before { content: ''; position: absolute; left: 0; top: 50%; width: 35px; height: 1px; background: var(--color-gold); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 16px 36px; font-family: var(--font-body); font-size: 13px; font-weight: 500; letter-spacing: 1.5px; text-transform: uppercase; border: none; cursor: pointer; transition: var(--transition); position: relative; overflow: hidden; }
.btn::before { content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent); transition: var(--transition-slow); }
.btn:hover::before { left: 100%; }
.btn-primary { background: var(--color-gold); color: var(--color-white); }
.btn-primary:hover { background: var(--color-gold-dark); transform: translateY(-2px); box-shadow: 0 10px 30px rgba(201, 169, 98, 0.3); }
.btn-outline { background: transparent; color: var(--color-primary); border: 1px solid var(--color-primary); }
.btn-outline:hover { background: var(--color-primary); color: var(--color-white); }
.btn-white { background: var(--color-white); color: var(--color-primary); }
.btn-white:hover { background: var(--color-cream); transform: translateY(-2px); }
.btn-dark { background: var(--color-primary); color: var(--color-white); }
.btn-dark:hover { background: #2d2d2d; }
.btn-sm { padding: 10px 20px; font-size: 11px; }
.btn-lg { padding: 20px 50px; font-size: 14px; }
.btn-block { width: 100%; }

/* Preloader - 大气开幕动画 */
.preloader { 
    position: fixed; 
    top: 0; 
    left: 0; 
    right: 0; 
    bottom: 0; 
    z-index: 9999; 
    display: flex; 
    align-items: center; 
    justify-content: center;
    overflow: hidden;
}
.preloader-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-primary);
}
.preloader-content { 
    text-align: center; 
    color: var(--color-white); 
    z-index: 1;
}
.preloader-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin-bottom: 20px;
    overflow: hidden;
}
.preloader-logo .logo-text {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    letter-spacing: 12px;
    opacity: 0;
    transform: translateY(40px);
    animation: logoReveal 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.preloader-logo .logo-text:first-child { animation-delay: 0.3s; }
.preloader-logo .logo-text:last-child { animation-delay: 0.5s; letter-spacing: 8px; }
.preloader-logo .logo-line {
    width: 0;
    height: 2px;
    background: var(--color-gold);
    margin: 0 20px;
    animation: lineExpand 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    animation-delay: 0.8s;
}
.preloader-tagline {
    font-size: 12px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: rgba(255,255,255,0.5);
    opacity: 0;
    animation: fadeIn 0.6s ease forwards;
    animation-delay: 1.2s;
}
.preloader.loaded .preloader-bg {
    animation: curtainUp 0.8s cubic-bezier(0.76, 0, 0.24, 1) forwards;
    animation-delay: 0.1s;
}
.preloader.loaded .preloader-content {
    animation: contentFade 0.4s ease forwards;
}
@keyframes logoReveal { 
    to { opacity: 1; transform: translateY(0); } 
}
@keyframes lineExpand { 
    to { width: 60px; } 
}
@keyframes fadeIn { 
    to { opacity: 1; } 
}
@keyframes curtainUp {
    to { transform: translateY(-100%); }
}
@keyframes contentFade {
    to { opacity: 0; transform: scale(0.95); }
}
.preloader.loaded {
    pointer-events: none;
}
.preloader.loaded .preloader-bg {
    animation: curtainUp 0.8s cubic-bezier(0.76, 0, 0.24, 1) forwards;
    animation-delay: 0.1s;
}
.preloader.loaded .preloader-content {
    animation: contentFade 0.4s ease forwards;
}

/* Header */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; transition: background 0.3s ease, box-shadow 0.3s ease; }
/* 首页默认透明 */
.site-header { background: transparent; }
.site-header .site-logo-text, .site-header .main-nav a { color: var(--color-white); }
.site-header .menu-toggle span { background: var(--color-white); }
.site-header .header-inquiry { background: transparent; border: 1px solid rgba(255,255,255,0.5); color: var(--color-white); }
/* 首页滚动后 */
.site-header.scrolled { background: #fff; box-shadow: 0 1px 0 rgba(0,0,0,0.08); }
.site-header.scrolled .site-logo-text, .site-header.scrolled .main-nav a { color: var(--color-primary); }
.site-header.scrolled .menu-toggle span { background: var(--color-primary); }
.site-header.scrolled .header-inquiry { background: var(--color-gold); border-color: var(--color-gold); color: #fff; }
/* 内页 - 始终白底深色字 */
.site-header.inner-page { background: #fff !important; box-shadow: 0 1px 0 rgba(0,0,0,0.08); }
.site-header.inner-page .site-logo-text, .site-header.inner-page .main-nav a { color: var(--color-primary) !important; }
.site-header.inner-page .menu-toggle span { background: var(--color-primary) !important; }
.site-header.inner-page .header-inquiry { background: var(--color-gold); border-color: var(--color-gold); color: #fff; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-height); }
.site-logo img { height: 45px; width: auto; }
.site-logo-text { font-family: var(--font-heading); font-size: 26px; font-weight: 500; color: var(--color-white); letter-spacing: 4px; transition: var(--transition); }
.main-nav ul { display: flex; gap: 50px; }
.main-nav a { font-size: 13px; font-weight: 500; letter-spacing: 1px; text-transform: uppercase; color: var(--color-white); position: relative; padding: 5px 0; }
.main-nav a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 1px; background: var(--color-gold); transition: var(--transition); }
.main-nav a:hover::after, .main-nav a.active::after { width: 100%; }
.header-actions { display: flex; align-items: center; gap: 25px; }
.header-inquiry { padding: 12px 28px; font-size: 11px; background: transparent; border: 1px solid rgba(255,255,255,0.5); color: var(--color-white); }
.site-header.scrolled .header-inquiry { background: var(--color-gold); border-color: var(--color-gold); color: var(--color-white); }
.header-inquiry:hover { background: var(--color-gold); border-color: var(--color-gold); }
.menu-toggle { display: none; flex-direction: column; gap: 6px; background: none; border: none; cursor: pointer; padding: 5px; z-index: 100; }
.menu-toggle span { display: block; width: 28px; height: 1px; background: var(--color-white); transition: var(--transition); }
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Hero Section */
.hero-section { position: relative; height: 100vh; min-height: 700px; display: flex; align-items: center; background: var(--color-primary); overflow: hidden; }
.hero-bg { position: absolute; top: 0; left: 0; right: 0; bottom: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.7; transform: scale(1.1); animation: heroZoom 20s ease infinite alternate; }
@keyframes heroZoom { from { transform: scale(1.1); } to { transform: scale(1); } }
.hero-overlay { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: linear-gradient(135deg, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.2) 100%); }
.hero-content { position: relative; z-index: 10; color: var(--color-white); max-width: 800px; }
.hero-label { font-size: 12px; font-weight: 500; letter-spacing: 4px; text-transform: uppercase; color: var(--color-gold); margin-bottom: 25px; opacity: 0; animation: fadeInUp 0.8s ease 0.3s forwards; }
.hero-content h1 { color: var(--color-white); margin-bottom: 25px; line-height: 1.1; opacity: 0; animation: fadeInUp 0.8s ease 0.5s forwards; }
.hero-subtitle { font-size: 1.1rem; font-weight: 300; line-height: 1.8; margin-bottom: 45px; opacity: 0.85; max-width: 500px; opacity: 0; animation: fadeInUp 0.8s ease 0.7s forwards; }
.hero-buttons { display: flex; gap: 20px; flex-wrap: wrap; opacity: 0; animation: fadeInUp 0.8s ease 0.9s forwards; }
.hero-scroll { position: absolute; bottom: 50px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 15px; color: var(--color-white); }
.hero-scroll span { font-size: 10px; letter-spacing: 3px; text-transform: uppercase; writing-mode: vertical-rl; }
.scroll-line { width: 1px; height: 60px; background: linear-gradient(to bottom, var(--color-white), transparent); animation: scrollPulse 2s ease infinite; }
@keyframes scrollPulse { 0%, 100% { opacity: 0.3; } 50% { opacity: 1; } }

/* Sections */
.section { padding: 120px 0; position: relative; }
.section-dark { background: var(--color-primary); color: var(--color-white); }
.section-dark h2, .section-dark h3 { color: var(--color-white); }
.section-cream { background: var(--color-cream); }
.section-header { text-align: center; margin-bottom: 70px; }
.section-header p { color: var(--color-text-light); max-width: 600px; margin: 0 auto; font-size: 1.05rem; }

/* Category Grid */
.category-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 25px; }
.category-card { position: relative; aspect-ratio: 3/4; overflow: hidden; background: var(--color-light); cursor: pointer; }
.category-card img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition-slow); }
.category-card:hover img { transform: scale(1.1); }
.category-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 60%); z-index: 1; transition: var(--transition); }
.category-card:hover::before { background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.3) 100%); }
.category-content { position: absolute; bottom: 0; left: 0; right: 0; padding: 35px; z-index: 2; color: var(--color-white); }
.category-content h3 { color: var(--color-white); font-size: 1.5rem; margin-bottom: 8px; }
.category-content span { font-size: 12px; letter-spacing: 2px; text-transform: uppercase; opacity: 0.7; }
.category-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 20px; font-size: 12px; letter-spacing: 1px; text-transform: uppercase; color: var(--color-gold); opacity: 0; transform: translateY(20px); transition: var(--transition); }
.category-link svg { width: 16px; height: 16px; transition: var(--transition); }
.category-card:hover .category-link { opacity: 1; transform: translateY(0); }
.category-link:hover svg { transform: translateX(5px); }

/* Products Grid */
.products-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.product-card { background: var(--color-white); transition: var(--transition); position: relative; overflow: hidden; }
.product-card::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 3px; background: var(--color-gold); transform: scaleX(0); transition: var(--transition); }
.product-card:hover::after { transform: scaleX(1); }
.product-card:hover { box-shadow: var(--shadow-lg); }
.product-image { position: relative; aspect-ratio: 1; overflow: hidden; background: var(--color-light); }
.product-image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition-slow); }
.product-card:hover .product-image img { transform: scale(1.08); }
.product-overlay { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center; gap: 15px; opacity: 0; transition: var(--transition); }
.product-card:hover .product-overlay { opacity: 1; }
.product-action { width: 50px; height: 50px; display: flex; align-items: center; justify-content: center; background: var(--color-white); border: none; cursor: pointer; transform: translateY(20px); transition: var(--transition); }
.product-action svg { width: 20px; height: 20px; }
.product-card:hover .product-action { transform: translateY(0); }
.product-action:hover { background: var(--color-gold); color: var(--color-white); }
.product-action:hover svg { stroke: var(--color-white); }
.product-info { padding: 25px; text-align: center; }
.product-info h3 { font-size: 1.1rem; margin-bottom: 8px; transition: var(--transition); }
.product-info h3:hover { color: var(--color-gold); }
.product-model { font-size: 13px; color: var(--color-text-light); letter-spacing: 1px; }

/* About Section Home */
.about-home { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; align-items: center; }
.about-image-wrapper { position: relative; }
.about-image { position: relative; overflow: hidden; }
.about-image img { width: 100%; aspect-ratio: 4/5; object-fit: cover; }
.about-image-frame { position: absolute; top: 40px; left: 40px; right: -40px; bottom: -40px; border: 1px solid var(--color-gold); z-index: -1; }
.about-year { position: absolute; bottom: -30px; right: -30px; background: var(--color-gold); color: var(--color-white); padding: 30px; font-family: var(--font-heading); font-size: 3rem; font-weight: 500; line-height: 1; }
.about-year span { display: block; font-size: 12px; font-family: var(--font-body); letter-spacing: 2px; margin-top: 5px; }
.about-content { padding-right: 50px; }
.about-content h2 { margin-bottom: 30px; }
.about-content p { color: var(--color-text-light); margin-bottom: 20px; font-size: 1.05rem; }
.about-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 50px; padding-top: 50px; border-top: 1px solid var(--color-border); }
.stat-item { text-align: center; }
.stat-number { font-family: var(--font-heading); font-size: 3.5rem; font-weight: 500; color: var(--color-gold); line-height: 1; margin-bottom: 10px; }
.stat-label { font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--color-text-light); }

/* Features Section */
.features-section { background: var(--color-primary); padding: 100px 0; }
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; }
.feature-card { text-align: center; padding: 50px 30px; border: 1px solid rgba(255,255,255,0.1); transition: var(--transition); position: relative; overflow: hidden; }
.feature-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: var(--color-gold); transform: scaleX(0); transition: var(--transition); }
.feature-card:hover::before { transform: scaleX(1); }
.feature-card:hover { border-color: rgba(255,255,255,0.2); background: rgba(255,255,255,0.02); }
.feature-icon { width: 70px; height: 70px; margin: 0 auto 25px; display: flex; align-items: center; justify-content: center; border: 1px solid var(--color-gold); border-radius: 50%; transition: var(--transition); }
.feature-card:hover .feature-icon { background: var(--color-gold); }
.feature-icon svg { width: 28px; height: 28px; stroke: var(--color-gold); transition: var(--transition); }
.feature-card:hover .feature-icon svg { stroke: var(--color-white); }
.feature-card h3 { color: var(--color-white); font-size: 1.2rem; margin-bottom: 15px; }
.feature-card p { font-size: 14px; color: rgba(255,255,255,0.6); line-height: 1.7; }

/* CTA Section */
.cta-section { padding: 120px 0; background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%); text-align: center; position: relative; overflow: hidden; }
.cta-content { position: relative; z-index: 1; }
.cta-content h2 { color: var(--color-white); margin-bottom: 20px; }
.cta-content p { color: rgba(255,255,255,0.9); font-size: 1.1rem; margin-bottom: 40px; max-width: 500px; margin-left: auto; margin-right: auto; }
.cta-buttons { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; }

/* Footer */
.site-footer { background: var(--color-primary); color: rgba(255,255,255,0.7); }
.footer-main { padding: 100px 0 60px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 80px; }
.footer-brand h3 { font-family: var(--font-heading); color: var(--color-white); font-size: 1.8rem; letter-spacing: 3px; margin-bottom: 25px; }
.footer-brand p { margin-bottom: 30px; line-height: 1.8; }
.footer-social { display: flex; gap: 15px; }
.footer-social a { width: 45px; height: 45px; display: flex; align-items: center; justify-content: center; border: 1px solid rgba(255,255,255,0.2); transition: var(--transition); }
.footer-social a:hover { background: var(--color-gold); border-color: var(--color-gold); }
.footer-social svg { width: 18px; height: 18px; }
.footer-col h4 { color: var(--color-white); font-family: var(--font-body); font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 2px; margin-bottom: 30px; }
.footer-col ul li { margin-bottom: 15px; }
.footer-col a { font-size: 14px; transition: var(--transition); }
.footer-col a:hover { color: var(--color-gold); padding-left: 5px; }
.footer-contact li { display: flex; gap: 15px; margin-bottom: 20px; font-size: 14px; }
.footer-contact svg { width: 18px; height: 18px; stroke: var(--color-gold); flex-shrink: 0; margin-top: 2px; }
.footer-bottom { padding: 30px 0; border-top: 1px solid rgba(255,255,255,0.1); display: flex; justify-content: space-between; align-items: center; font-size: 13px; }

/* Modal */
.modal-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.8); backdrop-filter: blur(5px); z-index: 2000; display: none; align-items: center; justify-content: center; padding: 20px; }
.modal-overlay.active { display: flex; }
.modal-content { background: var(--color-white); width: 100%; max-width: 520px; max-height: 90vh; overflow-y: auto; position: relative; }
.modal-close { position: absolute; top: 25px; right: 25px; width: 45px; height: 45px; background: none; border: 1px solid var(--color-border); font-size: 20px; cursor: pointer; transition: var(--transition); display: flex; align-items: center; justify-content: center; }
.modal-close:hover { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-white); }
.modal-header { padding: 50px 50px 30px; text-align: center; }
.modal-header h2 { font-size: 2rem; }
.modal-header p { color: var(--color-text-light); margin-top: 10px; }
.modal-body { padding: 0 50px 50px; }
.form-group { margin-bottom: 25px; }
.form-group label { display: block; font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 10px; color: var(--color-text); }
.form-group input, .form-group textarea { width: 100%; padding: 16px 20px; font-family: var(--font-body); font-size: 15px; border: 1px solid var(--color-border); background: var(--color-light); transition: var(--transition); }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--color-gold); background: var(--color-white); }
.form-group textarea { min-height: 120px; resize: vertical; }
.form-submit { width: 100%; padding: 18px; }
.form-message { padding: 15px 20px; margin-bottom: 20px; font-size: 14px; }
.form-message.success { background: #E8F5E9; color: #2E7D32; border-left: 3px solid #2E7D32; }
.form-message.error { background: #FFEBEE; color: #C62828; border-left: 3px solid #C62828; }

/* Float Buttons */
.float-buttons { position: fixed; bottom: 40px; right: 40px; z-index: 999; display: flex; flex-direction: column; gap: 15px; }

/* Search */
.header-search-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    opacity: 0.7;
    transition: var(--transition);
}
.header-search-btn:hover { opacity: 1; }
.header-search-btn svg { width: 20px; height: 20px; stroke: currentColor; }
.inner-page .header-search-btn svg { stroke: var(--color-primary); }

.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 0;
    background: var(--color-primary);
    z-index: 1001;
    overflow: hidden;
    transition: height 0.4s ease;
}
.search-overlay.active { height: 100vh; }

.search-container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 20px;
    gap: 20px;
}
.search-form {
    display: flex;
    align-items: center;
    width: 100%;
    max-width: 700px;
    background: rgba(255,255,255,0.1);
    border-radius: 8px;
    overflow: hidden;
}
.search-input {
    flex: 1;
    padding: 20px 25px;
    border: none;
    background: none;
    font-size: 20px;
    color: #fff;
    outline: none;
}
.search-input::placeholder { color: rgba(255,255,255,0.5); }
.search-submit {
    padding: 20px 25px;
    background: none;
    border: none;
    cursor: pointer;
}
.search-submit svg { width: 24px; height: 24px; stroke: #fff; }
.search-submit:hover svg { stroke: var(--color-gold); }
.search-close {
    background: rgba(255,255,255,0.1);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}
.search-close svg { width: 24px; height: 24px; stroke: #fff; }
.search-close:hover { background: rgba(255,255,255,0.2); }
.float-btn { width: 55px; height: 55px; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow); transition: var(--transition); }
.float-btn:hover { transform: scale(1.1); }
.float-btn.whatsapp { background: #25D366; color: white; }
.float-btn.wechat { background: #07C160; color: white; }
.float-btn svg { width: 24px; height: 24px; }

/* Page Header */
.page-header { padding: 180px 0 100px; background: var(--color-primary); text-align: center; color: var(--color-white); position: relative; }
.page-header h1 { color: var(--color-white); margin-bottom: 20px; }
.page-header p { opacity: 0.7; font-size: 1.1rem; }
.breadcrumb { display: flex; align-items: center; justify-content: center; gap: 15px; font-size: 13px; margin-bottom: 30px; }
.breadcrumb a { opacity: 0.6; }
.breadcrumb a:hover { opacity: 1; color: var(--color-gold); }
.breadcrumb span { opacity: 0.3; }

/* Products Page */
.products-page-header { padding: 140px 0 50px; background: var(--color-cream); }
.products-page-header h1 { font-size: 2.5rem; margin-top: 15px; }
.products-page { padding: 60px 0 100px; }
.products-layout { display: grid; grid-template-columns: 280px 1fr; gap: 50px; align-items: start; }
.products-sidebar { position: sticky; top: 110px; }
.sidebar-section { background: var(--color-white); border: 1px solid var(--color-border); padding: 30px; margin-bottom: 25px; }
.sidebar-title { font-family: var(--font-body); font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 2px; margin-bottom: 25px; padding-bottom: 20px; border-bottom: 1px solid var(--color-border); color: var(--color-primary); }
.category-list li { margin-bottom: 8px; }
.category-list a { display: flex; justify-content: space-between; align-items: center; padding: 12px 15px; font-size: 14px; color: var(--color-text); transition: var(--transition); }
.category-list a:hover { background: var(--color-cream); padding-left: 20px; }
.category-list a.active { background: var(--color-primary); color: var(--color-white); }
.category-list .count { font-size: 11px; opacity: 0.5; }
.sidebar-cta { background: var(--color-primary); color: var(--color-white); border: none; text-align: center; }
.sidebar-cta h3 { color: var(--color-white); font-size: 1.3rem; margin-bottom: 15px; }
.sidebar-cta p { font-size: 14px; opacity: 0.7; margin-bottom: 25px; }
.sidebar-link { display: flex; align-items: center; gap: 12px; padding: 15px; font-size: 13px; color: var(--color-text); background: var(--color-cream); transition: var(--transition); }
.sidebar-link:hover { background: var(--color-primary); color: var(--color-white); }
.sidebar-link svg { width: 18px; height: 18px; }
.products-toolbar { display: flex; justify-content: space-between; align-items: center; padding-bottom: 25px; margin-bottom: 35px; border-bottom: 1px solid var(--color-border); }
.results-count { font-size: 14px; color: var(--color-text-light); }
.view-toggle { display: flex; gap: 8px; }
.view-btn { width: 42px; height: 42px; display: flex; align-items: center; justify-content: center; background: var(--color-white); border: 1px solid var(--color-border); cursor: pointer; transition: var(--transition); }
.view-btn svg { width: 18px; height: 18px; }
.view-btn:hover, .view-btn.active { background: var(--color-primary); border-color: var(--color-primary); }
.view-btn:hover svg, .view-btn.active svg { stroke: var(--color-white); }
.products-page .products-grid { grid-template-columns: repeat(3, 1fr); gap: 30px; }
.products-page .product-card { border: 1px solid var(--color-border); }
.products-page .product-info { text-align: left; padding: 25px; }
.products-page .product-info h3 { font-size: 1rem; }
.product-meta { margin: 10px 0 15px; }
.meta-item { display: inline-block; font-size: 11px; color: var(--color-text-light); background: var(--color-cream); padding: 5px 10px; margin-right: 5px; }
.product-actions { display: flex; gap: 10px; }
.products-pagination { margin-top: 60px; display: flex; justify-content: center; }
.products-pagination .nav-links { display: flex; gap: 8px; }
.products-pagination a, .products-pagination span { display: flex; align-items: center; justify-content: center; min-width: 48px; height: 48px; padding: 0 18px; font-size: 14px; background: var(--color-white); border: 1px solid var(--color-border); transition: var(--transition); }
.products-pagination a:hover { border-color: var(--color-gold); color: var(--color-gold); }
.products-pagination .current { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-white); }
.products-pagination svg { width: 18px; height: 18px; }
.mobile-filter-toggle { display: none; position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%); z-index: 100; padding: 15px 30px; background: var(--color-primary); color: var(--color-white); border: none; box-shadow: var(--shadow-lg); cursor: pointer; font-size: 13px; font-weight: 500; letter-spacing: 1px; }
.mobile-filter-toggle svg { width: 18px; height: 18px; margin-right: 10px; vertical-align: middle; }
.no-products { text-align: center; padding: 100px 20px; background: var(--color-cream); }
.no-products h3 { margin-bottom: 15px; }
.no-products p { color: var(--color-text-light); margin-bottom: 30px; }

/* Single Product */
.product-single { padding: 120px 0 80px; background: var(--color-white); }
.product-single-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }

/* Gallery */
.product-gallery { position: relative; }
.gallery-main { background: var(--color-cream); margin-bottom: 15px; overflow: hidden; aspect-ratio: 1; display: flex; align-items: center; justify-content: center; }
.gallery-main img { max-width: 100%; max-height: 100%; object-fit: contain; }
.gallery-thumbs { display: flex; gap: 10px; flex-wrap: wrap; }
.gallery-thumb { width: 70px; height: 70px; background: var(--color-cream); cursor: pointer; opacity: 0.6; transition: var(--transition); overflow: hidden; border: 2px solid transparent; flex-shrink: 0; }
.gallery-thumb:hover, .gallery-thumb.active { opacity: 1; border-color: var(--color-gold); }
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; }

/* Product Details */
.product-details { padding-top: 10px; }
.product-details h1 { font-size: 2.2rem; margin-bottom: 10px; line-height: 1.3; }
.product-details .product-model { font-size: 14px; margin-bottom: 25px; color: var(--color-text-light); }
.product-description { margin-bottom: 30px; color: var(--color-text-light); line-height: 1.8; font-size: 15px; }

/* Variant Selector - 优化样式 */
.variant-selector { margin-bottom: 30px; padding: 20px; background: var(--color-light); border-radius: 4px; }
.variant-selector-title { font-family: var(--font-body); font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 15px; color: var(--color-text); }
.variant-options { display: flex; flex-wrap: wrap; gap: 10px; }
.variant-option { display: flex; align-items: center; gap: 10px; padding: 8px 15px; background: var(--color-white); border: 2px solid var(--color-border); cursor: pointer; transition: var(--transition); border-radius: 4px; }
.variant-option:hover { border-color: var(--color-gold); }
.variant-option.active { border-color: var(--color-gold); background: rgba(201, 169, 98, 0.1); }
.variant-option img { width: 40px; height: 40px; object-fit: cover; border-radius: 2px; }
.variant-name { font-size: 13px; font-weight: 500; color: var(--color-text); }
.variant-option.active .variant-name { color: var(--color-gold); }

/* Specs */
.product-specs { margin-bottom: 30px; }
.product-specs h3 { font-size: 1rem; margin-bottom: 15px; padding-bottom: 12px; border-bottom: 1px solid var(--color-border); }
.specs-table { width: 100%; }
.specs-table tr { border-bottom: 1px solid var(--color-border); }
.specs-table tr:last-child { border-bottom: none; }
.specs-table td { padding: 12px 0; font-size: 14px; }
.specs-table td:first-child { font-weight: 500; width: 100px; color: var(--color-text-light); }
.product-inquiry-btn { width: 100%; padding: 18px; font-size: 14px; }
.product-categories { margin-top: 20px; padding-top: 15px; border-top: 1px solid var(--color-border); font-size: 13px; color: var(--color-text-light); }
.product-categories a { color: var(--color-gold); margin-left: 5px; }
.product-categories a:hover { text-decoration: underline; }

/* Related */
.related-products { margin-top: 80px; }
.related-products h2 { text-align: center; margin-bottom: 40px; font-size: 1.8rem; }

/* About Page */
.about-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; align-items: center; }
.about-intro-image img { width: 100%; aspect-ratio: 4/5; object-fit: cover; }
.about-intro-content h2 { margin-bottom: 30px; }
.about-intro-content p { color: var(--color-text-light); margin-bottom: 20px; font-size: 1.05rem; line-height: 1.9; }
.factory-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; }
.factory-item { aspect-ratio: 4/3; overflow: hidden; }
.factory-item img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition-slow); }
.factory-item:hover img { transform: scale(1.1); }
.certs-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 30px; }
.cert-item { aspect-ratio: 1; background: var(--color-white); border: 1px solid var(--color-border); display: flex; align-items: center; justify-content: center; padding: 25px; transition: var(--transition); }
.cert-item:hover { border-color: var(--color-gold); box-shadow: var(--shadow); }
.cert-placeholder span { font-family: var(--font-heading); font-size: 1.5rem; font-weight: 500; color: var(--color-gold); }

/* Contact Page */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 100px; align-items: start; }
.contact-info h2 { margin-bottom: 25px; }
.contact-info > p { color: var(--color-text-light); margin-bottom: 45px; line-height: 1.9; }
.contact-list { margin-bottom: 45px; }
.contact-item { display: flex; gap: 20px; margin-bottom: 30px; align-items: flex-start; }
.contact-icon { width: 55px; height: 55px; background: var(--color-cream); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-icon svg { width: 22px; height: 22px; stroke: var(--color-gold); }
.contact-item h4 { font-family: var(--font-body); font-size: 13px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 8px; color: var(--color-primary); }
.contact-item a, .contact-item p { font-size: 15px; color: var(--color-text-light); }
.contact-item a:hover { color: var(--color-gold); }
.qr-code-box { background: var(--color-cream); padding: 30px; text-align: center; }
.qr-code-box h4 { font-family: var(--font-body); font-size: 13px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 20px; }
.qr-code-box img { width: 150px; height: 150px; margin: 0 auto; }
.contact-form-card { background: var(--color-white); padding: 50px; box-shadow: var(--shadow); }
.contact-form-card h3 { margin-bottom: 35px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

/* Downloads Page */
.catalogs-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 35px; }
.catalog-card { background: var(--color-white); box-shadow: var(--shadow); transition: var(--transition); overflow: hidden; }
.catalog-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); }
.catalog-cover { position: relative; aspect-ratio: 3/4; overflow: hidden; background: var(--color-cream); }
.catalog-cover img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition-slow); }
.catalog-card:hover .catalog-cover img { transform: scale(1.05); }
.catalog-placeholder { width: 100%; height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--color-text-light); }
.catalog-placeholder svg { width: 70px; height: 70px; margin-bottom: 20px; opacity: 0.3; }
.catalog-placeholder span { font-size: 13px; text-transform: uppercase; letter-spacing: 2px; }
.catalog-overlay { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.7); display: flex; align-items: center; justify-content: center; opacity: 0; transition: var(--transition); }
.catalog-card:hover .catalog-overlay { opacity: 1; }
.catalog-info { padding: 30px; text-align: center; }
.catalog-info h3 { font-size: 1.1rem; margin-bottom: 8px; }
.catalog-type { font-size: 12px; color: var(--color-text-light); letter-spacing: 1px; text-transform: uppercase; }
.request-catalog-box { display: flex; align-items: center; justify-content: space-between; padding: 60px; background: var(--color-primary); color: var(--color-white); }
.request-content h2 { color: var(--color-white); margin-bottom: 15px; font-size: 2rem; }
.request-content p { opacity: 0.7; font-size: 1.05rem; }

/* Responsive */
@media (max-width: 1200px) {
    .products-grid, .category-grid { grid-template-columns: repeat(3, 1fr); }
    .products-page .products-grid { grid-template-columns: repeat(2, 1fr); }
    .catalogs-grid { grid-template-columns: repeat(2, 1fr); }
    .certs-grid { grid-template-columns: repeat(3, 1fr); }
    .about-home, .footer-grid { gap: 60px; }
    .product-single-grid { gap: 40px; }
}
@media (max-width: 992px) {
    :root { --header-height: 70px; }
    .container { padding: 0 20px; }
    .main-nav { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: var(--color-primary); padding: 100px 40px; transform: translateX(100%); transition: var(--transition); z-index: 50; }
    .main-nav.active { transform: translateX(0); }
    .main-nav ul { flex-direction: column; gap: 30px; }
    .main-nav a { font-size: 24px; color: var(--color-white) !important; }
    .menu-toggle { display: flex; }
    .menu-toggle.active span { background: var(--color-white) !important; }
    .category-grid, .products-grid, .features-grid { grid-template-columns: repeat(2, 1fr); }
    .about-home, .about-intro, .contact-grid { grid-template-columns: 1fr; gap: 50px; }
    .about-content { padding-right: 0; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 50px 30px; }
    .products-layout { grid-template-columns: 1fr; }
    .products-sidebar { position: fixed; top: 0; left: 0; bottom: 0; width: 320px; background: var(--color-white); z-index: 1500; overflow-y: auto; padding: 25px; transform: translateX(-100%); transition: var(--transition); }
    .products-sidebar.active { transform: translateX(0); box-shadow: 5px 0 30px rgba(0,0,0,0.2); }
    .mobile-filter-toggle { display: flex; align-items: center; }
    .product-single { padding: 100px 0 60px; }
    .product-single-grid { grid-template-columns: 1fr; gap: 30px; }
    .gallery-main { aspect-ratio: 1; min-height: auto; }
    .gallery-thumbs { justify-content: flex-start; gap: 8px; }
    .gallery-thumb { width: 60px; height: 60px; }
    .variant-selector { padding: 15px; }
    .variant-options { gap: 8px; }
    .variant-option { padding: 6px 12px; }
    .variant-option img { width: 35px; height: 35px; }
    .variant-name { font-size: 12px; }
    .product-details h1 { font-size: 1.8rem; }
    .factory-grid { grid-template-columns: repeat(2, 1fr); }
    .request-catalog-box { flex-direction: column; text-align: center; gap: 30px; padding: 50px 30px; }
    .related-products { margin-top: 50px; }
    .related-products .products-grid { grid-template-columns: repeat(2, 1fr); gap: 15px; }
}
@media (max-width: 768px) {
    .section { padding: 80px 0; }
    .hero-section { min-height: 600px; }
    .hero-content h1 { font-size: 2.5rem; }
    .hero-buttons { flex-direction: column; width: 100%; }
    .hero-buttons .btn { width: 100%; }
    .category-grid, .products-grid, .features-grid { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: 1fr; gap: 30px; }
    .footer-grid { grid-template-columns: 1fr; gap: 40px; }
    .footer-bottom { flex-direction: column; gap: 15px; text-align: center; }
    .page-header { padding: 120px 0 50px; }
    .products-page .products-grid { grid-template-columns: 1fr; }
    .factory-grid, .catalogs-grid { grid-template-columns: 1fr; }
    .certs-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .form-row { grid-template-columns: 1fr; }
    .contact-form-card, .modal-header, .modal-body { padding: 25px; }
    .float-buttons { bottom: 25px; right: 25px; }
    .float-btn { width: 50px; height: 50px; }
    /* Mobile Product Single */
    .product-single { padding: 85px 0 50px; }
    .product-single .container { padding: 0 15px; }
    .product-single-grid { gap: 25px; }
    .gallery-main { aspect-ratio: 1; background: var(--color-cream); }
    .gallery-thumbs { grid-template-columns: repeat(4, 1fr); gap: 6px; }
    .gallery-thumb { border-width: 1px; }
    .variant-selector { margin-bottom: 15px; padding: 12px; }
    .variant-selector-title { font-size: 11px; margin-bottom: 10px; }
    .variant-options { gap: 6px; }
    .variant-option { padding: 5px 10px; }
    .variant-option img { width: 30px; height: 30px; }
    .variant-name { font-size: 11px; }
    .product-details { padding: 0; }
    .product-details h1 { font-size: 1.4rem; margin-bottom: 10px; }
    .product-details .product-model { font-size: 13px; margin-bottom: 20px; }
    .product-description { margin-bottom: 20px; font-size: 14px; }
    .product-specs { margin-bottom: 20px; }
    .product-specs h3 { font-size: 0.95rem; margin-bottom: 12px; padding-bottom: 10px; }
    .specs-table td { padding: 10px 0; font-size: 13px; }
    .specs-table td:first-child { width: 80px; }
    .product-inquiry-btn { padding: 15px; font-size: 13px; }
    .product-categories { margin-top: 15px; padding-top: 12px; font-size: 12px; }
    .related-products { margin-top: 40px; }
    .related-products h2 { font-size: 1.3rem; margin-bottom: 20px; }
    .related-products .products-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
    .related-products .product-info { padding: 12px; }
    .related-products .product-info h3 { font-size: 0.85rem; }
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--color-light); }
::-webkit-scrollbar-thumb { background: var(--color-gold); }
::selection { background: var(--color-gold); color: var(--color-white); }

/* WeChat QR Code in Footer */
.footer-wechat {
    margin-top: 20px;
    text-align: center;
    background: rgba(255,255,255,0.1);
    padding: 15px;
    border-radius: 8px;
}
.footer-wechat img {
    width: 100px;
    height: 100px;
    border-radius: 6px;
    background: #fff;
    padding: 5px;
}
.footer-wechat span {
    display: block;
    margin-top: 8px;
    font-size: 12px;
    color: rgba(255,255,255,0.7);
}