/* ========================================
   LED Power Supply Website - Premium Styles
   ======================================== */

/* CSS Variables */
:root {
    --primary-color: #3B82F6;
    --primary-dark: #1E40AF;
    --primary-light: #60A5FA;
    --secondary-color: #F59E0B;
    --secondary-dark: #D97706;
    --accent-color: #10B981;
    --text-dark: #1F2937;
    --text-light: #6B7280;
    --text-muted: #9CA3AF;
    --bg-light: #F9FAFB;
    --bg-white: #ffffff;
    --border-color: #E5E7EB;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.2);
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --container-width: 1280px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', 'Microsoft YaHei', 'PingFang SC', -apple-system, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: var(--container-width); margin: 0 auto; padding: 0 24px; }

h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-dark); }
h1 { font-size: 3rem; letter-spacing: -0.02em; }
h2 { font-size: 2.25rem; letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

.section-title { text-align: center; margin-bottom: 70px; }
.section-title h2 {
    font-size: 2.75rem;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.section-title p { color: var(--text-light); font-size: 1.15rem; max-width: 600px; margin: 16px auto 0; }

/* ========================================
   Header
   ======================================== */
.header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.header-top {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 10px 0;
    font-size: 0.85rem;
}

.header-top-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-top a { color: rgba(255,255,255,0.85); margin-left: 24px; transition: var(--transition); }
.header-top a:hover { color: var(--secondary-color); }

.header-main { padding: 12px 0; }
.header-main-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
}

.logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo-text { display: flex; flex-direction: column; line-height: 1.3; }
.logo-text strong {
    font-size: 1.35rem;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.logo-text span { font-size: 0.75rem; color: var(--text-muted); letter-spacing: 0.5px; }

/* Desktop Search & Language - Enhanced Layout */
.desktop-header-right {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
    margin-left: auto;
}
.desktop-search-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}
.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-white);
    border-radius: 50px;
    padding: 4px 4px 4px 20px;
    width: 320px;
    border: 2px solid var(--border-color);
    transition: var(--transition);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.search-box:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.15);
    transform: translateY(-1px);
}
.search-box input { 
    border: none; 
    background: transparent; 
    outline: none; 
    width: 100%; 
    padding: 10px; 
    font-size: 0.95rem; 
    color: var(--text-dark);
}
.search-box input::placeholder { color: var(--text-muted); }
.search-box button {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border: none;
    cursor: pointer;
    color: white;
    font-size: 1rem;
    transition: var(--transition);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.search-box button:hover { 
    transform: scale(1.08); 
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}
.search-box button:active {
    transform: scale(0.95);
}

/* Desktop Language Switcher - Enhanced & Beautiful */
.desktop-lang {
    position: relative;
}
.desktop-lang .lang-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    color: var(--text-dark);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}
.desktop-lang .lang-btn:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}
.desktop-lang .lang-btn .lang-flag-large {
    font-size: 1.2rem;
    line-height: 1;
}
.desktop-lang .lang-btn .lang-current {
    color: var(--text-dark);
    font-weight: 600;
}
.desktop-lang .lang-btn .lang-arrow {
    font-size: 0.6rem;
    color: var(--text-muted);
    transition: transform 0.3s ease;
}
.desktop-lang:hover .lang-btn .lang-arrow,
.desktop-lang.active .lang-btn .lang-arrow {
    transform: rotate(180deg);
}
.desktop-lang .lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    border: 1px solid var(--border-color);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    overflow: hidden;
    z-index: 9999;
    min-width: 160px;
}
.desktop-lang:hover .lang-dropdown,
.desktop-lang.active .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.desktop-lang .lang-dropdown .lang-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    color: var(--text-dark);
    white-space: nowrap;
    margin: 0;
    font-size: 0.95rem;
    transition: all 0.2s ease;
    border-bottom: 1px solid var(--bg-light);
}
.desktop-lang .lang-dropdown .lang-option:last-child {
    border-bottom: none;
}
.desktop-lang .lang-dropdown .lang-option:hover {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(59, 130, 246, 0.03));
    color: var(--primary-color);
}
.desktop-lang .lang-dropdown .lang-option.active {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(59, 130, 246, 0.05));
    color: var(--primary-color);
}
.desktop-lang .lang-dropdown .lang-option .lang-flag {
    font-size: 1.3rem;
}
.desktop-lang .lang-dropdown .lang-option .lang-name {
    flex: 1;
    font-weight: 500;
}
.desktop-lang .lang-dropdown .lang-option .lang-check {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    color: transparent;
}
.desktop-lang .lang-dropdown .lang-option.active .lang-check {
    background: var(--primary-color);
    color: white;
}

/* Navigation */
.nav-container {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    position: relative;
}
.nav-container::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}
.main-nav ul { display: flex; justify-content: center; position: relative; }
.main-nav > ul > li { position: relative; }
.main-nav > ul > li > a {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 18px 24px;
    color: rgba(255,255,255,0.9);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    z-index: 1;
}
.main-nav > ul > li > a::after {
    content: '';
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 30px;
    height: 3px;
    background: var(--secondary-color);
    border-radius: 2px;
    transition: var(--transition);
}
.main-nav > ul > li:hover > a::after,
.main-nav > ul > li.active > a::after { transform: translateX(-50%) scaleX(1); }
.main-nav > ul > li:hover > a { color: white; background: rgba(255,255,255,0.1); }

.mobile-menu-toggle { 
    display: none; 
    background: rgba(255,255,255,0.1);
    border: 2px solid rgba(255,255,255,0.3);
    cursor: pointer; 
    padding: 8px 12px;
    position: relative;
    z-index: 1001;
    width: auto;
    height: 44px;
    justify-content: center;
    align-items: center;
    gap: 8px;
    border-radius: 8px;
    transition: all 0.3s ease;
}
.mobile-menu-toggle:hover {
    background: rgba(255,255,255,0.2);
    border-color: rgba(255,255,255,0.5);
}
.mobile-menu-toggle .menu-text {
    color: white;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    white-space: nowrap;
}
.mobile-menu-toggle .hamburger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 18px;
}
.mobile-menu-toggle span { 
    display: block; 
    width: 100%; 
    height: 2px; 
    background: white; 
    border-radius: 2px; 
    transition: all 0.3s ease;
    position: relative;
}
.mobile-menu-toggle.active {
    background: rgba(255,255,255,0.2);
    border-color: white;
}
.mobile-menu-toggle.active .menu-text { display: none; }
.mobile-menu-toggle.active .hamburger span:nth-child(1) { 
    transform: rotate(45deg) translate(4px, 4px); 
}
.mobile-menu-toggle.active .hamburger span:nth-child(2) { 
    opacity: 0; 
    transform: translateX(-10px);
}
.mobile-menu-toggle.active .hamburger span:nth-child(3) { 
    transform: rotate(-45deg) translate(4px, -4px); 
}

/* ========================================
   Hero Slider
   ======================================== */
.hero-slider {
    position: relative;
    margin-top: 108px;
    height: 600px;
    overflow: hidden;
}
.slider-container { /*position: relative; */width: 100%; height: 100%; }
.slide {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
}
.slide.active { opacity: 1; }
.slide-image {
    width: 100%; height: 100%;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    position: relative;
    overflow: hidden;
}
.slide-image::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(16, 185, 129, 0.2) 0%, transparent 50%);
}
.slide-image::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, rgba(255,255,255,0.3), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.2), transparent),
        radial-gradient(2px 2px at 50px 160px, rgba(255,255,255,0.3), transparent),
        radial-gradient(2px 2px at 90px 40px, rgba(255,255,255,0.2), transparent),
        radial-gradient(2px 2px at 130px 80px, rgba(255,255,255,0.3), transparent),
        radial-gradient(2px 2px at 160px 120px, rgba(255,255,255,0.2), transparent);
    background-repeat: repeat;
    background-size: 200px 200px;
    animation: sparkle 20s linear infinite;
}
@keyframes sparkle { 0% { transform: translateY(0); } 100% { transform: translateY(-200px); } }

.img-placeholder {
    width: 100%; height: 100%;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    color: rgba(255,255,255,0.4);
    font-size: 1rem;
    position: relative;
    z-index: 1;
}
.slide-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.3) 50%, rgba(0,0,0,0.4) 100%);
    z-index: 2;
}
.slide-content {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--bg-white);
    width: 90%;
    max-width: 900px;
    z-index: 3;
}
.slide-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    font-size: 0.9rem;
    margin-bottom: 24px;
    border: 1px solid rgba(255,255,255,0.2);
}
.slide-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    color: var(--bg-white);
    text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.slide-content p {
    font-size: 1.25rem;
    margin-bottom: 36px;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}
.slide-content .btn-group { display: flex; gap: 16px; justify-content: center; }

.slider-nav { position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%); display: flex; gap: 12px; z-index: 10; }
.slider-dot {
    width: 14px; height: 14px;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}
.slider-dot::after {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 6px; height: 6px;
    background: white;
    border-radius: 50%;
    opacity: 0;
    transition: var(--transition);
}
.slider-dot.active { background: rgba(255,255,255,0.6); width: 40px; border-radius: 7px; }
.slider-dot.active::after { opacity: 1; }

.slider-arrows { position: absolute; top: 50%; transform: translateY(-50%); width: 100%; display: flex; justify-content: space-between; padding: 0 30px; z-index: 10; }
.slider-arrow {
    width: 56px; height: 56px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    color: var(--bg-white);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}
.slider-arrow:hover { background: var(--primary-color); border-color: var(--primary-color); transform: scale(1.1); }

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--bg-white);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(59, 130, 246, 0.5); }
.btn-secondary {
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    color: var(--bg-white);
    border: 1px solid rgba(255,255,255,0.3);
}
.btn-secondary:hover { background: rgba(255,255,255,0.25); transform: translateY(-2px); }
.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}
.btn-outline:hover { background: var(--primary-color); color: var(--bg-white); }
.btn-glow { animation: pulse-glow 2s ease-in-out infinite; }
@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4); }
    50% { box-shadow: 0 4px 40px rgba(59, 130, 246, 0.6); }
}

/* ========================================
   Sections
   ======================================== */
section { padding: 100px 0; position: relative; }
.section-bg { background: var(--bg-light); }

/* ========================================
   Core Values
   ======================================== */
.core-values { padding: 100px 0; position: relative; overflow: hidden; }
.core-values::before {
    content: '';
    position: absolute;
    top: -50%; right: -20%;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.values-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.value-card {
    text-align: center;
    padding: 48px 32px;
    background: var(--bg-white);
    border-radius: 24px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.value-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), #8B5CF6, var(--secondary-color));
    transform: scaleX(0);
    transition: var(--transition);
}
.value-card:hover { transform: translateY(-12px); box-shadow: var(--shadow-xl); }
.value-card:hover::before { transform: scaleX(1); }
.value-icon {
    width: 90px; height: 90px;
    margin: 0 auto 28px;
    border-radius: 24px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    display: flex; align-items: center; justify-content: center;
    font-size: 2.5rem;
    transition: var(--transition);
}
.value-card:hover .value-icon {
    background: linear-gradient(135deg, var(--primary-color), #8B5CF6);
    transform: rotateY(180deg);
    color: white;
}
.value-icon img { width: 50px; height: 50px; object-fit: contain; }
.value-card h3 { margin-bottom: 14px; color: var(--text-dark); font-size: 1.25rem; }
.value-card p { color: var(--text-light); font-size: 0.95rem; line-height: 1.7; }

/* ========================================
   Products Overview
   ======================================== */
.products-overview { padding: 100px 0; }
.products-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.product-card {
    background: var(--bg-white);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
}
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-xl); }
.product-image {
    height: 220px;
    background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
    position: relative;
}
.product-image::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 60px;
    background: linear-gradient(to top, rgba(255,255,255,1), transparent);
}
.product-image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.product-card:hover .product-image img { transform: scale(1.08); }
.product-badge {
    position: absolute;
    top: 16px; left: 16px;
    padding: 6px 14px;
    background: var(--secondary-color);
    color: white;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 2;
}
.product-info { padding: 28px; }
.product-info h3 { margin-bottom: 10px; font-size: 1.2rem; }
.product-info p { color: var(--text-light); font-size: 0.9rem; margin-bottom: 18px; line-height: 1.6; }
.product-link { display: inline-flex; align-items: center; gap: 8px; color: var(--primary-color); font-weight: 600; font-size: 0.95rem; }
.product-link:hover { color: var(--primary-dark); gap: 12px; }
.btn-view-all { display: inline-block; padding: 14px 32px; background: linear-gradient(135deg, var(--primary-color), var(--primary-light)); color: white; border-radius: 30px; font-weight: 600; transition: var(--transition); }
.btn-view-all:hover { background: linear-gradient(135deg, var(--primary-dark), var(--primary-color)); transform: translateY(-2px); box-shadow: var(--shadow-lg); }

/* ========================================
   Trust Section
   ======================================== */
.trust-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: var(--bg-white);
    position: relative;
    overflow: hidden;
}
.trust-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: 
        radial-gradient(circle at 10% 90%, rgba(59, 130, 246, 0.2) 0%, transparent 40%),
        radial-gradient(circle at 90% 10%, rgba(139, 92, 246, 0.2) 0%, transparent 40%);
}
.trust-section .section-title h2,
.trust-section .section-title p { color: var(--bg-white); position: relative; z-index: 1; }
.trust-section .section-title h2 {
    background: linear-gradient(135deg, #fff, #60A5FA);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.trust-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; margin-bottom: 70px; position: relative; z-index: 1; }
.stat-item {
    text-align: center;
    padding: 32px;
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.1);
    transition: var(--transition);
}
.stat-item:hover { background: rgba(255,255,255,0.1); transform: translateY(-5px); }
.stat-icon { font-size: 2.5rem; margin-bottom: 16px; }
.stat-number {
    font-size: 3.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--secondary-color), #FCD34D);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    line-height: 1;
}
.stat-label { font-size: 1.1rem; opacity: 0.8; margin-top: 8px; }

.certifications { display: flex; justify-content: center; flex-wrap: wrap; gap: 30px; position: relative; z-index: 1; }
.cert-badge {
    width: 130px; height: 130px;
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border-radius: 24px;
    display: flex; align-items: center; justify-content: center;
    border: 1px solid rgba(255,255,255,0.15);
    transition: var(--transition);
}
.cert-badge:hover { background: rgba(255,255,255,0.15); transform: translateY(-5px); }
.cert-badge img { width: 80px; height: 80px; object-fit: contain; }
.cert-badge-placeholder {
    width: 80px; height: 80px;
    background: rgba(255,255,255,0.1);
    border-radius: 16px;
    display: flex; align-items: center; justify-content: center;
    color: rgba(255,255,255,0.6);
    font-size: 0.85rem;
    text-align: center;
}

/* ========================================
   Application Scenarios
   ======================================== */
.scenarios-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; }
.scenario-card {
    position: relative;
    height: 320px;
    border-radius: 24px;
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
}
.scenario-image { width: 100%; height: 100%; background: linear-gradient(135deg, var(--primary-color), var(--primary-dark)); transition: var(--transition); }
.scenario-image img { width: 100%; height: 100%; object-fit: cover; }
.scenario-overlay {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    padding: 32px 24px;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.5) 50%, transparent 100%);
    color: var(--bg-white);
    transition: var(--transition);
}
.scenario-card:hover .scenario-overlay { padding-bottom: 40px; }
.scenario-overlay h3 { color: var(--bg-white); font-size: 1.2rem; margin-bottom: 8px; }
.scenario-overlay p { font-size: 0.9rem; opacity: 0.8; }
.scenario-icon { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: 3rem; opacity: 0; transition: var(--transition); }
.scenario-card:hover .scenario-icon { opacity: 1; transform: translate(-50%, -50%) scale(1.2); }

/* ========================================
   Industry Applications
   ======================================== */
.industries-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 30px; }
.industry-card {
    background: var(--bg-white);
    border-radius: 24px;
    padding: 40px 24px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}
.industry-card::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.05), transparent);
    transition: var(--transition);
}
.industry-card:hover::before { left: 100%; }
.industry-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-xl); border-color: var(--primary-color); }
.industry-icon {
    width: 90px; height: 90px;
    margin: 0 auto 24px;
    border-radius: 24px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
    transition: var(--transition);
}
.industry-card:hover .industry-icon { background: linear-gradient(135deg, var(--primary-color), #8B5CF6); }
.industry-icon img { width: 50px; height: 50px; object-fit: contain; }
.industry-icon-placeholder { width: 50px; height: 50px; background: var(--border-color); border-radius: 50%; }
.industry-card:hover .industry-icon-placeholder { background: rgba(255,255,255,0.3); }
.industry-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.industry-card p { color: var(--text-light); font-size: 0.9rem; }

/* ========================================
   Solutions Grid
   ======================================== */
.solutions-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.solution-card {
    background: var(--bg-white);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}
.solution-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-xl); }
.solution-image {
    height: 200px;
    background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
    overflow: hidden;
    position: relative;
}
.solution-image::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    opacity: 0;
    transition: var(--transition);
}
.solution-card:hover .solution-image::after { opacity: 1; }
.solution-image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.solution-card:hover .solution-image img { transform: scale(1.1); }
.solution-content { padding: 28px; }
.solution-content h3 { margin-bottom: 12px; font-size: 1.2rem; }
.solution-content p { color: var(--text-light); font-size: 0.95rem; margin-bottom: 20px; line-height: 1.7; }

/* ========================================
   Case Studies
   ======================================== */
.cases-filters { display: flex; justify-content: center; gap: 12px; margin-bottom: 50px; flex-wrap: wrap; }
.filter-btn {
    padding: 12px 28px;
    border: 2px solid var(--border-color);
    background: var(--bg-white);
    border-radius: 50px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    color: var(--text-dark);
}
.filter-btn:hover { border-color: var(--primary-color); color: var(--primary-color); }
.filter-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-color: var(--primary-color);
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.cases-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.case-card {
    background: var(--bg-white);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}
.case-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-xl); }
.case-image {
    height: 220px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    overflow: hidden;
    position: relative;
}
.case-image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.case-card:hover .case-image img { transform: scale(1.1); }
.case-tag {
    position: absolute;
    top: 16px; left: 16px;
    padding: 8px 16px;
    background: var(--secondary-color);
    color: var(--bg-white);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
}
.case-content { padding: 24px; }
.case-content h3 { font-size: 1.1rem; margin-bottom: 10px; }
.case-content p { color: var(--text-light); font-size: 0.9rem; line-height: 1.6; }

/* ========================================
   About Section
   ======================================== */
.about-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.about-image {
    height: 480px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 32px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    position: relative;
}
.about-image::before {
    content: '';
    position: absolute;
    top: -20px; right: -20px;
    width: 100px; height: 100px;
    background: var(--secondary-color);
    border-radius: 50%;
    opacity: 0.3;
}
.about-image img { width: 100%; height: 100%; object-fit: cover; }
.about-text h2 { margin-bottom: 24px; font-size: 2.25rem; }
.about-text p { color: var(--text-light); margin-bottom: 24px; line-height: 1.9; font-size: 1.05rem; }
.about-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.about-stat { text-align: center; padding: 24px; background: var(--bg-light); border-radius: 16px; }
.about-stat h3 { font-size: 2rem; color: var(--primary-color); margin-bottom: 4px; }
.about-stat p { font-size: 0.9rem; margin-bottom: 0; }

.factory-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.factory-item {
    position: relative;
    height: 280px;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.factory-item img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.factory-item:hover img { transform: scale(1.1); }
.factory-overlay {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    padding: 20px;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: var(--bg-white);
    font-weight: 600;
}

.certs-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 24px; }
.cert-item {
    background: var(--bg-white);
    border-radius: 20px;
    padding: 28px 20px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}
.cert-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-xl); }
.cert-item-image {
    width: 100px; height: 100px;
    margin: 0 auto 16px;
    border-radius: 16px;
    background: var(--bg-light);
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
}
.cert-item-image img { width: 80px; height: 80px; object-fit: contain; }
.cert-item p { font-size: 0.9rem; color: var(--text-dark); font-weight: 600; }

.rd-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.rd-item {
    text-align: center;
    padding: 40px 28px;
    background: var(--bg-white);
    border-radius: 24px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.rd-item::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: var(--transition);
}
.rd-item:hover::before { transform: scaleX(1); }
.rd-item:hover { transform: translateY(-8px); box-shadow: var(--shadow-xl); }
.rd-icon {
    width: 80px; height: 80px;
    margin: 0 auto 24px;
    border-radius: 24px;
    background: linear-gradient(135deg, var(--primary-color), #8B5CF6);
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem;
    color: var(--bg-white);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.3);
}
.rd-item h3 { margin-bottom: 12px; font-size: 1.15rem; }
.rd-item p { color: var(--text-light); font-size: 0.95rem; }

/* ========================================
   Blog Section
   ======================================== */
.blog-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.blog-card {
    background: var(--bg-white);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}
.blog-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-xl); }
.blog-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    overflow: hidden;
    position: relative;
}
.blog-image::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.1);
    opacity: 0;
    transition: var(--transition);
}
.blog-card:hover .blog-image::after { opacity: 1; }
.blog-image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.blog-card:hover .blog-image img { transform: scale(1.1); }
.blog-content { padding: 28px; }
.blog-meta { display: flex; gap: 16px; margin-bottom: 14px; font-size: 0.85rem; }
.blog-category { color: var(--primary-color); font-weight: 600; }
.blog-date { color: var(--text-muted); }
.blog-content h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.blog-content p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.read-more { display: inline-flex; align-items: center; gap: 8px; color: var(--primary-color); font-weight: 600; font-size: 0.95rem; }
.read-more:hover { color: var(--primary-dark); gap: 12px; }

/* ========================================
   FAQ Section
   ======================================== */
.faq-container { max-width: 900px; margin: 0 auto; }
.faq-item {
    background: var(--bg-white);
    border-radius: 20px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 2px solid transparent;
    transition: var(--transition);
}
.faq-item:hover { border-color: rgba(59, 130, 246, 0.2); }
.faq-item.active { border-color: var(--primary-color); box-shadow: 0 4px 20px rgba(59, 130, 246, 0.15); }
.faq-question {
    padding: 24px 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.05rem;
    transition: var(--transition);
}
.faq-question:hover { color: var(--primary-color); }
.faq-icon {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: var(--bg-light);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem;
    color: var(--primary-color);
    transition: var(--transition);
    flex-shrink: 0;
}
.faq-item.active .faq-icon { background: var(--primary-color); color: white; transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-item.active .faq-answer { max-height: 600px; }
.faq-answer-content { padding: 0 28px 28px; color: var(--text-light); line-height: 1.9; font-size: 1rem; }
.faq-answer-content p { margin-bottom: 12px; }
.faq-answer-content p:last-child { margin-bottom: 0; }

/* ========================================
   Contact Section
   ======================================== */
.contact-wrapper { display: grid; grid-template-columns: 1.2fr 1fr; gap: 60px; }
.contact-form {
    background: var(--bg-white);
    padding: 48px;
    border-radius: 32px;
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}
.contact-form::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 6px;
    background: linear-gradient(90deg, var(--primary-color), #8B5CF6, var(--secondary-color));
}
.contact-form h3 { margin-bottom: 32px; font-size: 1.75rem; }
.form-group { margin-bottom: 24px; }
.form-group label { display: block; margin-bottom: 10px; font-weight: 600; font-size: 0.95rem; color: var(--text-dark); }
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid var(--border-color);
    border-radius: 14px;
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}
.form-group textarea { min-height: 140px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.contact-info { padding: 20px 0; }
.contact-info h3 { margin-bottom: 36px; font-size: 1.75rem; }
.info-item {
    display: flex;
    gap: 24px;
    margin-bottom: 32px;
    padding: 24px;
    background: var(--bg-light);
    border-radius: 20px;
    transition: var(--transition);
}
.info-item:hover { background: var(--bg-white); box-shadow: var(--shadow-md); }
.info-icon {
    width: 60px; height: 60px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--primary-color), #8B5CF6);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem;
    color: white;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}
.info-content h4 { margin-bottom: 8px; font-size: 1.1rem; }
.info-content p { color: var(--text-light); line-height: 1.7; }

.quick-actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.action-card {
    background: var(--bg-light);
    padding: 32px 20px;
    border-radius: 20px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}
.action-card:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
}
.action-icon {
    width: 60px; height: 60px;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: var(--bg-white);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: var(--transition);
}
.action-card:hover .action-icon { background: rgba(255,255,255,0.2); color: white; }
.action-card h4 { font-size: 1rem; margin-bottom: 6px; }
.action-card p { font-size: 0.85rem; opacity: 0.8; }

/* ========================================
   Wechat QR Code Modal
   ======================================== */
.wechat-qr-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
}
.wechat-qr-modal.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}
.wechat-qr-content {
    background: var(--bg-white);
    border-radius: 24px;
    padding: 40px;
    text-align: center;
    max-width: 360px;
    width: 90%;
    position: relative;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.3s ease;
}
.wechat-qr-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-light);
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-light);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}
.wechat-qr-close:hover {
    background: var(--primary-color);
    color: white;
}
.wechat-qr-header {
    margin-bottom: 24px;
}
.wechat-qr-header .wechat-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 12px;
    border-radius: 50%;
    background: linear-gradient(135deg, #07C160, #06AD56);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}
.wechat-qr-header h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
}
.wechat-qr-image {
    background: var(--bg-light);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 20px;
}
.qr-placeholder {
    width: 200px;
    height: 200px;
    margin: 0 auto;
    background: linear-gradient(135deg, #f5f5f5, #e8e8e8);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    color: var(--text-muted);
    border: 2px dashed var(--border-color);
}
.wechat-qr-tip {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.6;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: var(--bg-white);
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}
.footer::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
}
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr; gap: 50px; padding-bottom: 60px; position: relative; z-index: 1; }
.footer-about h3 { color: var(--bg-white); margin-bottom: 20px; font-size: 1.5rem; }
.footer-about p { color: rgba(255,255,255,0.7); margin-bottom: 24px; line-height: 1.8; }
.social-links { display: flex; gap: 12px; }
.social-links a {
    width: 44px; height: 44px;
    border-radius: 12px;
    background: rgba(255,255,255,0.1);
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
    font-size: 1.1rem;
}
.social-links a:hover { background: var(--primary-color); transform: translateY(-3px); }
.footer-column h4 { color: var(--bg-white); margin-bottom: 24px; font-size: 1.1rem; }
.footer-column ul li { margin-bottom: 14px; }
.footer-column ul li a { color: rgba(255,255,255,0.7); font-size: 0.95rem; transition: var(--transition); }
.footer-column ul li a:hover { color: var(--secondary-color); padding-left: 5px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 28px 0; text-align: center; }
.footer-bottom p { color: rgba(255,255,255,0.6); font-size: 0.9rem; }
.footer-bottom a { color: rgba(255,255,255,0.8); }
.footer-bottom a:hover { color: var(--secondary-color); }

/* ========================================
   Language Switcher - Base Styles
   ======================================== */
.language-switcher { position: relative; }
.lang-btn {
    background: transparent;
    border: none;
    color: rgba(255,255,255,0.85);
    cursor: pointer;
    font-size: 0.9rem;
    display: flex; align-items: center; gap: 6px;
    padding: 6px 12px;
    border-radius: 8px;
    transition: var(--transition);
}
.lang-btn:hover { background: rgba(255,255,255,0.1); color: white; }
.lang-dropdown {
    position: absolute;
    top: 100%; right: 0;
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: 0 15px 50px rgba(0,0,0,0.25);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    overflow: hidden;
    z-index: 9999;
}
.language-switcher:hover .lang-dropdown,
.language-switcher.active .lang-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-dropdown a { display: flex; align-items: center; gap: 10px; padding: 12px 20px; color: var(--text-dark); white-space: nowrap; margin: 0; font-size: 0.9rem; transition: all 0.2s ease; }
.lang-dropdown a:hover { background: var(--bg-light); color: var(--primary-color); }
.lang-dropdown a .lang-flag { font-size: 1.1rem; }

/* ========================================
   Page Header
   ======================================== */
.page-header {
    margin-top: 108px;
    padding: 80px 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: var(--bg-white);
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-header::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: 
        radial-gradient(circle at 30% 70%, rgba(59, 130, 246, 0.2) 0%, transparent 40%),
        radial-gradient(circle at 70% 30%, rgba(139, 92, 246, 0.2) 0%, transparent 40%);
}
.page-header h1 { color: var(--bg-white); margin-bottom: 16px; position: relative; z-index: 1; }
.page-header p { opacity: 0.8; font-size: 1.15rem; position: relative; z-index: 1; }
.breadcrumb { display: flex; justify-content: center; gap: 12px; margin-top: 24px; font-size: 0.95rem; position: relative; z-index: 1; }
.breadcrumb a { color: rgba(255,255,255,0.7); }
.breadcrumb a:hover { color: var(--secondary-color); }
.breadcrumb span { color: rgba(255,255,255,0.5); }

/* ========================================
   Back to Top
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 30px; right: 30px;
    width: 56px; height: 56px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--bg-white);
    border: none;
    border-radius: 16px;
    cursor: pointer;
    font-size: 1.4rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}
.back-to-top.show { opacity: 1; visibility: visible; }
.back-to-top:hover { transform: translateY(-5px); box-shadow: 0 8px 30px rgba(59, 130, 246, 0.5); }

/* ========================================
   Animations
   ======================================== */
.fade-in { animation: fadeInUp 0.8s ease forwards; }
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
.floating { animation: floating 3s ease-in-out infinite; }
@keyframes floating {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ========================================
   Desktop Header - Hide Mobile Elements
   ======================================== */
@media (min-width: 993px) {
    /* 隐藏移动端搜索图标 */
    .search-toggle { display: none !important; }
    /* 隐藏移动端搜索框 */
    .mobile-search-box { display: none !important; }
    /* 显示电脑端语言选择 */
    .desktop-lang { display: block !important; }
    /* 隐藏移动端语言选择 */
    .mobile-lang { display: none !important; }
}

/* ========================================
   Responsive - Desktop Large
   ======================================== */
@media (max-width: 1400px) {
    .container { max-width: 1140px; }
    .scenarios-grid { grid-template-columns: repeat(3, 1fr); }
    .industries-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ========================================
   Responsive - Desktop
   ======================================== */
@media (max-width: 1200px) {
    .container { max-width: 960px; }
    .values-grid, .products-grid, .solutions-grid, .cases-grid, .blog-grid { grid-template-columns: repeat(2, 1fr); }
    .trust-stats { grid-template-columns: repeat(2, 1fr); }
    .scenarios-grid { grid-template-columns: repeat(3, 1fr); }
    .industries-grid { grid-template-columns: repeat(3, 1fr); }
    .factory-grid, .rd-grid { grid-template-columns: repeat(2, 1fr); }
    .certs-grid { grid-template-columns: repeat(4, 1fr); }
    .footer-grid { grid-template-columns: repeat(3, 1fr); }
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    .main-nav > ul > li > a { padding: 18px 16px; font-size: 0.9rem; }
}

/* ========================================
   Responsive - Tablet
   ======================================== */
@media (max-width: 992px) {
    .container { max-width: 720px; }
    .header { position: relative; }
    /* 隐藏顶部栏 */
    .header-top { display: none !important; }
    .header-main { 
        padding: 8px 0; 
        background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    }
    .nav-container { 
        display: block;
        position: static;
        background: transparent;
        box-shadow: none;
    }
    .header-main-content { 
        flex-wrap: nowrap;
        gap: 12px;
    }
    .desktop-header-right { display: none !important; }
    .header-actions { 
        display: flex;
        align-items: center;
        gap: 6px;
        z-index: 1000;
    }
    .mobile-menu-toggle { 
        display: flex;
        height: 32px;
        padding: 4px 10px;
    }
    .mobile-menu-toggle .menu-text { font-size: 0.8rem; }
    .lang-btn { 
        display: flex;
        align-items: center;
        gap: 4px;
        padding: 6px 10px;
        font-size: 0.75rem;
        height: 36px;
        border-radius: 8px;
        background: rgba(255,255,255,0.15);
        border: 1px solid rgba(255,255,255,0.25);
        color: white;
    }
    .lang-btn:hover {
        background: rgba(255,255,255,0.25);
    }
    
    .search-box { 
        flex: 1;
        min-width: 0;
        max-width: none;
        border-radius: 6px;
    }
    .search-box input { font-size: 0.85rem; }
    
    /* 移动端搜索按钮样式 */
    .search-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border: none;
        background: rgba(255,255,255,0.15);
        border-radius: 8px;
        cursor: pointer;
        font-size: 1rem;
        transition: var(--transition);
    }
    .search-toggle:hover {
        background: rgba(255,255,255,0.3);
    }
    
    /* 移动端搜索框放在导航下方 */
    .mobile-search-wrapper {
        display: none !important;
        background: var(--bg-white);
        border-bottom: 1px solid var(--border-color);
        padding: 12px 16px;
        width: 100%;
    }
    .mobile-search-wrapper.active {
        display: block !important;
    }
    .mobile-search-box {
        position: static;
        background: transparent;
        box-shadow: none;
        border-radius: 8px;
        width: 100%;
        max-width: 100%;
    }
    .mobile-search-box .search-header {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 0;
        background: transparent;
        border: none;
        box-shadow: none;
    }
    .mobile-search-box .search-close {
        width: 36px;
        height: 36px;
        border: none;
        background: var(--bg-light);
        border-radius: 8px;
        cursor: pointer;
        font-size: 0.9rem;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.2s ease;
        color: var(--text-dark);
        flex-shrink: 0;
    }
    .mobile-search-box input {
        flex: 1;
        padding: 10px 14px;
        border: 2px solid var(--border-color);
        border-radius: 8px;
        font-size: 0.9rem;
        background: var(--bg-white);
        transition: all 0.3s ease;
        outline: none;
    }
    .mobile-search-box input:focus {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    }
    .mobile-search-box button[type="button"] {
        width: 40px;
        height: 40px;
        border-radius: 8px;
        font-size: 1rem;
        flex-shrink: 0;
        background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
        border: none;
        color: white;
    }
    
    .main-nav { 
        display: none; 
        position: absolute; 
        top: 100%; 
        left: 0; 
        right: 0; 
        background: linear-gradient(135deg, var(--primary-dark), var(--primary-color)); 
        box-shadow: 0 10px 40px rgba(0,0,0,0.3);
        max-height: 70vh;
        overflow-y: auto;
        z-index: 999;
    }
    .main-nav.active { 
        display: block;
        animation: slideDown 0.3s ease;
    }
    @keyframes slideDown {
        from { opacity: 0; transform: translateY(-10px); }
        to { opacity: 1; transform: translateY(0); }
    }
    .main-nav ul { flex-direction: column; }
    .main-nav > ul > li { border-bottom: 1px solid rgba(255,255,255,0.1); }
    .main-nav > ul > li > a { 
        padding: 16px 24px; 
        justify-content: space-between;
    }
    .main-nav > ul > li > a::after { display: none; }
    .main-nav > ul > li > a::before {
        content: '▾';
        font-size: 0.9rem;
        color: rgba(255,255,255,0.6);
        transition: all 0.3s ease;
    }
    .main-nav > ul > li:hover > a::before,
    .main-nav > ul > li.active > a::before {
        color: var(--secondary-color);
        margin-right: 8px;
    }
    
    /* 修复移动端导航项点击展开的样式 */
    .main-nav > ul > li.active > a {
        background: rgba(255,255,255,0.15);
        color: var(--secondary-color);
    }
    
    /* Header变成relative，hero-slider不需要margin-top */
    .hero-slider { height: 500px; margin-top: 0; }
    .slide-content h1 { font-size: 2.25rem; }
    .slide-content .btn-group { flex-direction: column; align-items: center; }
    
    .about-intro { grid-template-columns: 1fr; gap: 40px; }
    .contact-wrapper { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
    
    /* 确保移动端语言选择器显示 */
    .mobile-lang { display: block !important; }
    
    /* 语言选择器样式已在上面定义 */
    
    /* 热门搜索关键词 - 与768px以下保持一致 */
    .search-tag {
        display: inline-flex;
        align-items: center;
        gap: 4px;
        padding: 8px 12px;
        background: var(--bg-light);
        border: 1px solid var(--border-color);
        border-radius: 16px;
        font-size: 0.85rem;
        color: var(--text-dark);
        cursor: pointer;
        transition: all 0.2s ease;
    }
    .search-tag:hover {
        background: var(--primary-color);
        border-color: var(--primary-color);
        color: white;
    }
    .page-header { margin-top: 0; padding: 70px 0; }
    section { padding: 80px 0; }
}

/* ========================================
   Responsive - Mobile Large
   ======================================== */
@media (max-width: 768px) {
    .container { max-width: 540px; padding: 0 16px; }
    section { padding: 70px 0; }
    
    /* Header Mobile - Single Row Layout */
    .header { position: relative; }
    .header-top { display: none !important; }
    .header-main { 
        padding: 8px 0; 
        background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    }
    .header-main-content { 
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 8px;
    }
    .logo { 
        flex-shrink: 0;
    }
    .logo-text strong { font-size: 0.95rem; }
    .logo-text span { display: none; }
    
    /* 隐藏PC端搜索框和语言选择 */
    .desktop-header-right { display: none !important; }
    
    /* 移动端操作按钮 */
    .header-actions { 
        display: flex;
        align-items: center;
        gap: 6px;
        flex-shrink: 0;
    }
    .search-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border: none;
        background: rgba(255,255,255,0.15);
        border-radius: 8px;
        cursor: pointer;
        font-size: 1rem;
        transition: var(--transition);
    }
    .search-toggle:hover {
        background: rgba(255,255,255,0.3);
    }
    
    /* 移动端搜索框 - 放在导航下方（第二行） */
    .mobile-search-wrapper {
        display: none;
        background: var(--bg-white);
        border-bottom: 1px solid var(--border-color);
        padding: 12px 16px;
        width: 100%;
    }
    .mobile-search-wrapper.active {
        display: block;
    }
    .mobile-search-box {
        display: flex;
        flex-direction: column;
        background: transparent;
        box-shadow: none;
        width: 100%;
        max-width: 100%;
    }
    .mobile-search-box .search-header {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 0;
        background: transparent;
        border: none;
        box-shadow: none;
    }
    .mobile-search-box .search-close {
        width: 36px;
        height: 36px;
        border: none;
        background: var(--bg-light);
        border-radius: 8px;
        cursor: pointer;
        font-size: 0.9rem;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.2s ease;
        color: var(--text-dark);
        flex-shrink: 0;
    }
    .mobile-search-box .search-close:hover {
        background: var(--border-color);
    }
    .mobile-search-box input {
        flex: 1;
        padding: 10px 14px;
        border: 2px solid var(--border-color);
        border-radius: 8px;
        font-size: 0.9rem;
        background: var(--bg-white);
        transition: all 0.3s ease;
        outline: none;
    }
    .mobile-search-box input:focus {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    }
    .mobile-search-box button[type="button"] {
        width: 40px;
        height: 40px;
        border-radius: 8px;
        font-size: 1rem;
        flex-shrink: 0;
        background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
        border: none;
        color: white;
    }
    .mobile-search-suggestions {
        padding: 16px 0 0 0;
    }
    .search-section-title {
        font-size: 0.7rem;
        font-weight: 600;
        color: var(--text-muted);
        text-transform: uppercase;
        letter-spacing: 0.5px;
        margin-bottom: 10px;
    }
    .recent-searches, .hot-searches {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin-bottom: 16px;
    }
    .search-tag {
        display: inline-flex;
        align-items: center;
        gap: 4px;
        padding: 8px 12px;
        background: var(--bg-light);
        border: 1px solid var(--border-color);
        border-radius: 16px;
        font-size: 0.85rem;
        color: var(--text-dark);
        cursor: pointer;
        transition: all 0.2s ease;
    }
    .search-tag:hover {
        background: var(--primary-color);
        border-color: var(--primary-color);
        color: white;
    }
    .quick-links {
        background: var(--bg-white);
        border-radius: 12px;
        overflow: hidden;
        box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    }
    .quick-link-item {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 14px;
        border-bottom: 1px solid var(--bg-light);
        cursor: pointer;
        transition: all 0.2s ease;
    }
    .quick-link-item:last-child { border-bottom: none; }
    .quick-link-item:hover { background: var(--bg-light); }
    .quick-link-item .link-icon {
        width: 36px;
        height: 36px;
        border-radius: 8px;
        background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1rem;
        flex-shrink: 0;
    }
    .quick-link-item .link-text { flex: 1; }
    .quick-link-item .link-text strong {
        display: block;
        font-size: 0.9rem;
        color: var(--text-dark);
        margin-bottom: 2px;
    }
    .quick-link-item .link-text span {
        font-size: 0.75rem;
        color: var(--text-muted);
    }
    .quick-link-item .link-arrow { color: var(--text-muted); font-size: 0.9rem; }
    
    /* 语言选择器 */
    .lang-btn { 
        padding: 6px 10px; 
        font-size: 0.75rem;
        height: 36px;
        border-radius: 8px;
    }
    .lang-dropdown {
        top: 100%;
        right: 0;
    }
    
    /* 菜单按钮 */
    .mobile-menu-toggle { 
        padding: 6px 10px;
        height: 36px;
        border-radius: 8px;
    }
    .mobile-menu-toggle .menu-text { font-size: 0.7rem; }
    .mobile-menu-toggle .hamburger { width: 14px; }
    .mobile-menu-toggle .hamburger span { height: 2px; margin: 2px 0; }
    
    /* Mobile Menu */
    .main-nav { 
        top: 100%; 
        max-height: 70vh;
        z-index: 999;
    }
    .main-nav > ul > li > a { 
        padding: 14px 20px; 
        font-size: 0.95rem;
    }
    .main-nav > ul > li > a::before {
        content: '▾';
        font-size: 0.8rem;
        color: rgba(255,255,255,0.7);
        transition: all 0.3s ease;
    }
    .main-nav > ul > li:hover > a::before,
    .main-nav > ul > li.active > a::before {
        color: var(--secondary-color);
        margin-right: 8px;
    }
    
    /* Language Switcher Mobile - Enhanced */
    .mobile-lang .lang-btn {
        display: flex;
        align-items: center;
        gap: 4px;
        padding: 6px 10px;
        font-size: 0.75rem;
        height: 36px;
        border-radius: 8px;
        background: rgba(255,255,255,0.15);
        border: 1px solid rgba(255,255,255,0.25);
    }
    .mobile-lang .lang-btn:hover {
        background: rgba(255,255,255,0.25);
    }
    .mobile-lang .lang-dropdown {
        right: 0;
        min-width: 120px;
        border-radius: 12px;
    }
    .mobile-lang .lang-dropdown a {
        padding: 12px 16px;
        font-size: 0.9rem;
    }
    
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    .section-title { margin-bottom: 40px; }
    .section-title h2 { font-size: 1.5rem; }
    .section-title p { font-size: 1rem; }
    
    .values-grid, .trust-stats, .products-grid, .solutions-grid, .cases-grid, .blog-grid, .factory-grid, .rd-grid { grid-template-columns: 1fr; }
    .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
    .industries-grid { grid-template-columns: repeat(2, 1fr); }
    .certs-grid { grid-template-columns: repeat(3, 1fr); }
    
    .form-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; text-align: center; }
    .social-links { justify-content: center; }
    .footer-column ul li a:hover { padding-left: 0; }
    
    /* Header relative，hero-slider不需要margin-top */
    .hero-slider { margin-top: 0; height: 450px; padding-top: 0; }
    .slide-content h1 { font-size: 1.5rem; }
    .slide-content p { font-size: 0.95rem; margin-bottom: 24px; }
    .slide-badge { font-size: 0.8rem; padding: 6px 16px; margin-bottom: 16px; }
    .btn { padding: 12px 24px; font-size: 0.9rem; }
    .slider-arrow { width: 44px; height: 44px; font-size: 1.2rem; }
    .slider-arrows { padding: 0 16px; }
    
    .value-card { padding: 32px 24px; }
    .value-icon { width: 70px; height: 70px; font-size: 2rem; }
    .product-info, .solution-content, .case-content, .blog-content { padding: 20px; }
    .product-image, .solution-image, .case-image, .blog-image { height: 180px; }
    
    .stat-item { padding: 24px; }
    .stat-number { font-size: 2.5rem; }
    .stat-label { font-size: 1rem; }
    
    .scenario-card { height: 250px; }
    .scenario-overlay { padding: 20px 16px; }
    .scenario-overlay h3 { font-size: 1rem; }
    .scenario-overlay p { font-size: 0.85rem; }
    
    .cert-badge { width: 100px; height: 100px; }
    .cert-badge-placeholder { width: 60px; height: 60px; font-size: 0.75rem; }
    
    .about-image { height: 300px; }
    .about-stats { grid-template-columns: 1fr; gap: 16px; }
    .about-stat { padding: 20px; }
    
    .factory-item { height: 200px; }
    .cert-item { padding: 20px 16px; }
    .cert-item-image { width: 80px; height: 80px; }
    
    .rd-item { padding: 32px 24px; }
    .rd-icon { width: 60px; height: 60px; font-size: 1.5rem; }
    
    .page-header { padding: 60px 0; margin-top: 0; }
    .breadcrumb { font-size: 0.85rem; gap: 8px; }
    
    .contact-form { padding: 32px 24px; }
    .info-item { flex-direction: column; text-align: center; }
    .info-icon { margin: 0 auto; }
    .quick-actions { grid-template-columns: 1fr; }
    
    .cases-filters { gap: 8px; }
    .filter-btn { padding: 10px 20px; font-size: 0.85rem; }
    
    .faq-question { padding: 20px; font-size: 1rem; }
    .faq-answer-content { padding: 0 20px 20px; font-size: 0.95rem; }
    
    .back-to-top { width: 48px; height: 48px; bottom: 20px; right: 20px; font-size: 1.2rem; }
}

/* ========================================
   Responsive - Mobile Small
   ======================================== */
@media (max-width: 480px) {
    .container { padding: 0 12px; }
    
    /* Header Mobile Small - Single Row Compact */
    .header { position: relative; }
    .header-top { display: none; }
    .header-main { 
        padding: 6px 0; 
        background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    }
    .header-main-content { 
        gap: 4px;
    }
    .logo { 
        flex-shrink: 0;
    }
    .logo-text strong { font-size: 0.85rem; }
    .logo-text span { display: none; }
    
    .header-actions { 
        display: flex;
        align-items: center;
        gap: 4px;
        flex-shrink: 0;
    }
    .search-toggle {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
    }
    .mobile-search-box {
        padding: 10px 12px;
    }
    .mobile-search-box input {
        padding: 10px 12px;
        font-size: 0.85rem;
    }
    .mobile-search-box button {
        padding: 10px 14px;
    }
    
    .lang-btn { 
        padding: 4px 6px; 
        font-size: 0.65rem;
        height: 32px;
        border-radius: 6px;
    }
    .mobile-menu-toggle { 
        padding: 4px 8px;
        height: 32px;
        border-radius: 6px;
    }
    .mobile-menu-toggle .menu-text { font-size: 0.6rem; }
    .mobile-menu-toggle .hamburger { width: 12px; }
    .mobile-menu-toggle .hamburger span { height: 1.5px; margin: 2px 0; }
    
    .main-nav { max-height: 70vh; }
    .main-nav > ul > li > a { 
        padding: 12px 16px; 
        font-size: 0.9rem;
    }
    .main-nav > ul > li > a::before {
        content: '▾';
        font-size: 0.7rem;
        color: rgba(255,255,255,0.7);
        transition: all 0.3s ease;
    }
    .main-nav > ul > li:hover > a::before,
    .main-nav > ul > li.active > a::before {
        color: var(--secondary-color);
        margin-right: 6px;
    }
    
    /* Header relative，hero-slider不需要margin-top */
    .hero-slider { margin-top: 0; height: 380px; padding-top: 0; }
    .slide-content h1 { font-size: 1.25rem; }
    .slide-content p { font-size: 0.85rem; }
    .slide-content .btn-group { gap: 10px; }
    .btn { padding: 10px 20px; font-size: 0.85rem; }
    
    .scenarios-grid, .industries-grid, .certs-grid { grid-template-columns: 1fr; }
    
    .industry-card { padding: 32px 20px; }
    .industry-icon { width: 70px; height: 70px; }
    
    .value-card { padding: 28px 20px; }
    .value-icon { width: 60px; height: 60px; font-size: 1.75rem; }
    
    .stat-item { padding: 20px; }
    .stat-number { font-size: 2rem; }
    .stat-icon { font-size: 2rem; }
    
    .product-image, .solution-image, .case-image, .blog-image { height: 160px; }
    .product-info h3, .solution-content h3, .case-content h3, .blog-content h3 { font-size: 1rem; }
    
    .about-image { height: 240px; border-radius: 20px; }
    .about-text h2 { font-size: 1.5rem; }
    .about-text p { font-size: 0.95rem; }
    
    .factory-item { height: 180px; }
    .rd-item { padding: 28px 20px; }
    
    .page-header { padding: 50px 0; margin-top: 0; }
    .page-header h1 { font-size: 1.5rem; }
    .page-header p { font-size: 1rem; }
    
    .footer { padding-top: 60px; }
    .footer-about h3 { font-size: 1.25rem; }
    .footer-column h4 { margin-bottom: 16px; font-size: 1rem; }
    .footer-column ul li { margin-bottom: 10px; }
    .footer-column ul li a { font-size: 0.9rem; }
    .footer-bottom p { font-size: 0.85rem; }
    
    .contact-form { padding: 24px 16px; border-radius: 20px; }
    .form-group { margin-bottom: 16px; }
    .form-group input, .form-group select, .form-group textarea { padding: 14px 16px; font-size: 0.95rem; }
    .info-item { padding: 20px; }
    .info-icon { width: 50px; height: 50px; font-size: 1.25rem; }
    
    .action-card { padding: 24px 16px; }
    .action-icon { width: 50px; height: 50px; font-size: 1.25rem; }
    
    .back-to-top { width: 44px; height: 44px; bottom: 16px; right: 16px; }
}

/* ========================================
   Responsive - Very Small Mobile
   ======================================== */
@media (max-width: 360px) {
    .hero-slider { margin-top: 0; height: 320px; padding-top: 0; }
    .slide-content h1 { font-size: 1.1rem; }
    .slide-content p { font-size: 0.8rem; }
    .btn { padding: 8px 16px; font-size: 0.8rem; }
    .slider-arrow { width: 36px; height: 36px; font-size: 1rem; }
    h1 { font-size: 1.5rem; }
    h2 { font-size: 1.25rem; }
    section { padding: 50px 0; }
    
    .logo-text strong { font-size: 0.8rem; }
    .search-toggle { width: 30px; height: 30px; font-size: 0.85rem; }
    .lang-btn { padding: 4px 6px; font-size: 0.6rem; height: 30px; }
    .mobile-menu-toggle { padding: 4px 6px; height: 30px; }
    .mobile-menu-toggle .menu-text { font-size: 0.55rem; }
    
    .page-header { margin-top: 0; }
}

/* ========================================
   Fix for desktop header-slider gap (min-width: 993px)
   ======================================== */
@media (min-width: 993px) {
    .hero-slider {
        margin-top: 90px; /* 减少顶部间距，原为108px */
    }
}
    /* 分页样式 - pagelist结构 */
    .pagelist { text-align: center; margin-top: 50px; }
    .pagelist ul { display: inline-flex; gap: 8px; list-style: none; padding: 0; margin: 0; }
    .pagelist li a { display: block; padding: 10px 16px; border-radius: 8px; background: var(--bg-white); color: var(--text-dark); font-weight: 500; transition: var(--transition); box-shadow: var(--shadow-sm); cursor: pointer; border: none; white-space: nowrap; }
    .pagelist li a:hover { background: var(--primary-color); color: white; }
    .pagelist li .current { background: var(--primary-color); color: white; }
    
  /* 博客详情页样式 */
    .blog-detail { padding: 60px 0 80px; }
    .blog-detail-header { margin-bottom: 40px; }
    .blog-detail-category { display: inline-block; padding: 6px 16px; background: var(--primary-color); color: white; border-radius: 20px; font-size: 0.85rem; font-weight: 500; margin-bottom: 20px; }
    .blog-detail-title { font-size: 2.5rem; font-weight: 700; color: var(--text-dark); line-height: 1.3; margin-bottom: 20px; }
    .blog-detail-meta { display: flex; gap: 24px; color: var(--text-muted); font-size: 0.95rem; }
    .blog-detail-meta span { display: flex; align-items: center; gap: 6px; }
    .blog-detail-cover { width: 100%; height: 450px; border-radius: 20px; overflow: hidden; margin-bottom: 50px; background: var(--bg-light); }
    .blog-detail-cover .img-placeholder { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; font-size: 1.2rem; color: var(--text-muted); }
    .blog-detail-content { max-width: 800px; margin: 0 auto; }
    .blog-detail-content h2 { font-size: 1.6rem; color: var(--text-dark); margin: 40px 0 20px; }
    .blog-detail-content h3 { font-size: 1.3rem; color: var(--text-dark); margin: 30px 0 16px; }
    .blog-detail-content p { font-size: 1.1rem; line-height: 1.9; color: var(--text-light); margin-bottom: 20px; }
    .blog-detail-content ul, .blog-detail-content ol { margin: 20px 0 30px 30px; }
    .blog-detail-content li { font-size: 1.05rem; line-height: 1.8; color: var(--text-light); margin-bottom: 12px; }
    .blog-detail-content blockquote { background: var(--bg-light); padding: 24px 30px; border-left: 4px solid var(--primary-color); border-radius: 0 12px 12px 0; margin: 30px 0; font-style: italic; color: var(--text-dark); }
    .blog-detail-tags { display: flex; gap: 12px; margin-top: 50px; padding-top: 30px; border-top: 1px solid var(--border-color); }
    .blog-detail-tags span { font-weight: 500; color: var(--text-dark); }
    .blog-detail-tags a { padding: 6px 14px; background: var(--bg-light); color: var(--text-light); border-radius: 20px; font-size: 0.9rem; transition: var(--transition); }
    .blog-detail-tags a:hover { background: var(--primary-color); color: white; }
    
    /* 上一篇/下一篇 */
    .blog-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 60px; padding-top: 40px; border-top: 1px solid var(--border-color); }
    .blog-nav-item { padding: 24px; background: var(--bg-light); border-radius: 16px; transition: var(--transition); }
    .blog-nav-item:hover { background: var(--bg-white); box-shadow: var(--shadow-md); }
    .blog-nav-item span { display: block; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 8px; }
    .blog-nav-item a { font-size: 1rem; font-weight: 600; color: var(--text-dark); }
    .blog-nav-item:hover a { color: var(--primary-color); }
    .blog-nav-next { text-align: right; }
    
    /* 相关文章 */
    .related-blogs { margin-top: 80px; }
    .related-blogs h2 { font-size: 1.8rem; color: var(--text-dark); margin-bottom: 30px; text-align: center; }
    .related-blogs-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    
    @media (max-width: 992px) {
        .blog-detail-title { font-size: 2rem; }
        .blog-detail-cover { height: 350px; }
        .blog-nav { grid-template-columns: 1fr; }
        .blog-nav-next { text-align: left; }
        .related-blogs-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
        .blog-detail { padding: 40px 0 60px; }
        .blog-detail-title { font-size: 1.6rem; }
        .blog-detail-meta { flex-wrap: wrap; gap: 12px; }
        .blog-detail-cover { height: 250px; margin-bottom: 30px; }
        .blog-detail-content h2 { font-size: 1.4rem; }
        .blog-detail-content h3 { font-size: 1.2rem; }
        .blog-detail-content p { font-size: 1rem; }
        .related-blogs-grid { grid-template-columns: 1fr; }
    }