:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #0f172a;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --text-color: #334155;
    --text-light: #64748b;
    --text-dark: #1e293b;
    --bg-color: #ffffff;
    --bg-light: #f8fafc;
    --bg-gray: #f1f5f9;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1);
    --radius-sm: 4px;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --transition: all 0.3s ease;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* ========== 基础重置 ========== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

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

ul, ol {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ========== 容器 ========== */
.container {
    width: 100%;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 40px;
}

.container-narrow {
    max-width: 1200px;
}

.section-padding {
    padding: 30px 0;
}

/* ========== 按钮样式 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-sm { padding: 8px 20px; font-size: 0.875rem; }
.btn-lg { padding: 16px 36px; font-size: 1.125rem; }
.btn-block { width: 100%; }

.btn-primary {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}
.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-white {
    background: #fff;
    color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}
.btn-white:hover {
    background: var(--bg-light);
    color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.25);
}

.btn-outline-primary {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}
.btn-outline-primary:hover {
    background: var(--primary-color);
    color: #fff;
}

.btn-outline-white {
    background: transparent;
    color: #fff;
    border-color: #fff;
}
.btn-outline-white:hover {
    background: #fff;
    color: var(--primary-color);
}

.btn-outline-gray {
    background: transparent;
    color: var(--text-light);
    border-color: var(--border-color);
}
.btn-outline-gray:hover {
    background: var(--bg-light);
    color: var(--text-color);
}

/* ========== 顶部信息栏 ========== */
.top-bar {
    background: var(--secondary-color);
    color: rgba(255,255,255,0.8);
    font-size: 0.875rem;
    padding: 10px 0;
}

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

.top-contact {
    display: flex;
    gap: 24px;
}

.top-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.top-item i {
    color: var(--primary-light);
}

.top-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* 语言下拉菜单 */
.top-bar .lang-dropdown {
    position: relative;
}

.top-bar .lang-current {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius);
    color: #fff;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
    -webkit-appearance: none;
    appearance: none;
}

.top-bar .lang-current:hover {
    background: rgba(255,255,255,0.2);
}

.top-bar .lang-current .flag-icon {
    width: 20px;
    height: 14px;
    object-fit: cover;
    border-radius: 2px;
}

.top-bar .lang-current i {
    font-size: 0.75rem;
    transition: var(--transition);
}

.top-bar .lang-dropdown.active .lang-current i {
    transform: rotate(180deg);
}

.top-bar .lang-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 150px;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 100;
}

.top-bar .lang-dropdown.active .lang-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.top-bar .lang-menu li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    color: var(--text-color);
    font-size: 0.875rem;
    transition: var(--transition);
}

.top-bar .lang-menu li a:hover {
    background: var(--bg-light);
    color: var(--primary-color);
}

.top-bar .lang-menu li.active a {
    color: var(--primary-color);
    font-weight: 500;
}

.top-bar .lang-menu .flag-icon {
    width: 20px;
    height: 14px;
    object-fit: cover;
    border-radius: 2px;
}

.top-bar .lang-current {
    background: rgba(255,255,255,0.1) !important;
    border: 1px solid rgba(255,255,255,0.2) !important;
    color: #fff !important;
}

.top-bar .lang-menu {
    display: none;
}

.top-bar .lang-dropdown.active .lang-menu {
    display: block;
}

/* ========== 主导航 ========== */
.main-header {
    background: #fff;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.main-header.scrolled {
    box-shadow: var(--shadow);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo img {
    height: 50px;
    width: auto;
}

.main-nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-list {
    display: flex;
    gap: 8px;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 12px 20px;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
}

.nav-link:hover,
.nav-item.active .nav-link {
    color: var(--primary-color);
}

.nav-link i {
    font-size: 0.75rem;
    transition: var(--transition);
}

.nav-item:hover .nav-link i {
    transform: rotate(180deg);
}

/* 下拉菜单 */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 12px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
}

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li a {
    display: block;
    padding: 10px 24px;
    color: var(--text-color);
    transition: var(--transition);
}

.dropdown-menu li a:hover {
    background: var(--bg-light);
    color: var(--primary-color);
}

.dropdown-menu li.has-submenu {
    position: relative;
}

.dropdown-menu li.has-submenu > a {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.dropdown-submenu {
    position: absolute;
    top: 0;
    left: 100%;
    min-width: 200px;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 12px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateX(10px);
    transition: var(--transition);
    z-index: 1001;
}

.dropdown-menu li.has-submenu:hover .dropdown-submenu {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.dropdown-submenu li a {
    display: block;
    padding: 10px 24px;
    color: var(--text-color);
    transition: var(--transition);
}

.dropdown-submenu li a:hover {
    background: var(--bg-light);
    color: var(--primary-color);
}

/* 头部功能区 */
.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-lang-switcher {
    display: none;
}

.search-btn,
.cart-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--text-color);
    transition: var(--transition);
}

.search-btn:hover,
.cart-btn:hover {
    background: var(--bg-light);
    color: var(--primary-color);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-color);
    transition: var(--transition);
}

/* ========== 搜索弹窗 ========== */
.search-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.search-modal.active {
    opacity: 1;
    visibility: visible;
}

.search-modal-inner {
    width: 100%;
    max-width: 600px;
    padding: 20px;
}

.search-close {
    position: absolute;
    top: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.5rem;
    transition: var(--transition);
}

.search-close:hover {
    transform: rotate(90deg);
}

.search-content h3 {
    color: #fff;
    font-size: 1.5rem;
    margin-bottom: 24px;
    text-align: center;
}

.search-form {
    display: flex;
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.search-input {
    flex: 1;
    padding: 18px 24px;
    border: none;
    font-size: 1.125rem;
    outline: none;
}

.search-submit {
    padding: 18px 28px;
    background: var(--primary-color);
    color: #fff;
    font-size: 1.25rem;
    transition: var(--transition);
}

.search-submit:hover {
    background: var(--primary-dark);
}

/* ========== 移动端菜单 ========== */
.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 320px;
    height: 100%;
    background: #fff;
    z-index: 10000;
    transform: translateX(100%);
    transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: transform;
    overflow-y: auto;
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.mobile-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.mobile-logo img {
    height: 40px;
}

.mobile-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--text-color);
}

.mobile-nav-list > li {
    border-bottom: 1px solid var(--border-color);
}

.mobile-nav-list > li > a {
    display: block;
    padding: 16px 20px;
    color: var(--text-color);
    font-weight: 500;
}

.mobile-nav-list > li.active > a {
    color: var(--primary-color);
}

.has-sub {
    position: relative;
}

.sub-toggle {
    position: absolute;
    right: 0;
    top: 0;
    width: 50px;
    height: 54px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
}

.mobile-sub-menu {
    background: var(--bg-light);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transition: max-height 0.32s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.2s ease;
    will-change: max-height, opacity;
}

.has-sub.open > .mobile-sub-menu {
    max-height: 1000px;
    opacity: 1;
    pointer-events: auto;
}

.mobile-sub-menu li a {
    display: block;
    padding: 12px 20px 12px 36px;
    color: var(--text-light);
    font-size: 0.9375rem;
}

.mobile-third-menu {
    background: var(--bg-light);
}

.mobile-third-menu li a {
    display: block;
    padding: 12px 20px 12px 52px;
    color: var(--text-light);
    font-size: 0.9375rem;
}

.mobile-contact {
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

.mobile-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    color: var(--text-light);
    font-size: 0.9375rem;
}

.mobile-contact i {
    color: var(--primary-color);
}

/* ========== Hero轮播 ========== */
.hero-section {
    position: relative;
    height: 100vh;
    min-height: 600px;
    max-height: 900px;
}

.hero-slider {
    height: 100%;
}

.slider-wrapper {
    height: 100%;
}

.slide-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.slide-item.active {
    opacity: 1;
}

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
}

.slide-item > .container {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
}

.slide-content {
    position: relative;
    z-index: 2;
    color: #fff;
    max-width: 700px;
    padding: 40px 0;
}

.slide-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.slide-desc {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 32px;
    line-height: 1.8;
}

.slide-btns {
    display: flex;
    gap: 16px;
}

/* 动画类 */
.animate-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.slide-item.active .animate-up {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }

/* 轮播控制 */
.slider-controls {
    position: absolute;
    bottom: 28px;
    left: 50%;
    right: auto;
    top: auto;
    transform: translateX(-50%);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    padding: 0;
    z-index: 10;
}

.slider-prev,
.slider-next {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: transparent;
    color: #fff;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    backdrop-filter: none;
}

.slider-prev i,
.slider-next i {
    text-shadow: 0 2px 8px rgba(0,0,0,0.45);
}

.slider-prev:hover,
.slider-next:hover {
    background: transparent;
    color: var(--primary-color);
}

.slider-dots {
    position: static;
    transform: none;
    display: flex;
    gap: 12px;
    z-index: 10;
}

.slider-dots .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    cursor: pointer;
    transition: var(--transition);
}

.slider-dots .dot.active {
    background: #fff;
    transform: scale(1.2);
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: #fff;
    z-index: 10;
    display: none;
}

.scroll-icon {
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255,255,255,0.5);
    border-radius: 12px;
    margin: 10px auto 0;
    position: relative;
}

.scroll-icon::after {
    content: '';
    width: 4px;
    height: 8px;
    background: #fff;
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollDown 1.5s infinite;
}

@keyframes scrollDown {
    0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
    50% { opacity: 0.5; transform: translateX(-50%) translateY(10px); }
}

/* ========== 区块标题 ========== */
.section-header {
    margin-bottom: 50px;
}

.section-header.text-center {
    text-align: center;
}

.section-header.text-left {
    text-align: left;
}

.section-tag {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-color);
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
    line-height: 1.3;
}

.section-title.text-white {
    color: #fff;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

.section-footer {
    margin-top: 50px;
}

/* ========== 服务区块 ========== */
.services-section {
    background: var(--bg-color);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.service-card {
    background: #fff;
    padding: 50px 35px;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.service-icon {
    margin-bottom: 28px;
}

.icon-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: #fff;
    font-size: 1.75rem;
    font-weight: 700;
    border-radius: var(--radius-lg);
}

.service-title {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 14px;
}

.service-desc {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 24px;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary-color);
    font-weight: 500;
}

.service-link:hover {
    gap: 10px;
}

/* ========== 关于我们 ========== */
.about-section {
    position: relative;
    padding: 100px 0;
    overflow: hidden;
}

.about-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.about-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(15,23,42,0.95) 0%, rgba(37,99,235,0.85) 100%);
}

.about-wrapper {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image {
    position: relative;
}

.image-frame {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.image-frame img {
    width: 100%;
    height: auto;
}

.experience-badge {
    position: absolute;
    bottom: -30px;
    right: -30px;
    width: 140px;
    height: 140px;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
    box-shadow: var(--shadow-lg);
}

.exp-num {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
}

.exp-text {
    font-size: 0.875rem;
}

.about-content {
    color: #fff;
}

.about-company {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--accent-color);
}

.about-text {
    font-size: 1rem;
    line-height: 1.9;
    opacity: 0.9;
    margin-bottom: 30px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 30px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.feature-item i {
    color: var(--accent-color);
    font-size: 1.25rem;
}

/* ========== 数据统计 ========== */
.stats-section {
    background: var(--primary-color);
    padding: 60px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.stat-item {
    text-align: center;
    color: #fff;
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
    opacity: 0.8;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 8px;
}

.stat-number::after {
    content: '+';
}

.stat-label {
    font-size: 1rem;
    opacity: 0.8;
}

/* ========== 产品展示 ========== */
.products-section {
    background: var(--bg-light);
}

.product-tabs {
    margin-bottom: 50px;
}

.tabs-nav {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 14px 32px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-color);
    font-weight: 500;
    font-size: 1rem;
    transition: var(--transition);
}

.tab-btn:hover,
.tab-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.product-list-section .products-grid {
    align-items: stretch;
}

.product-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.product-list-section .product-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transform: none;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.product-list-section .product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 22px rgba(0,0,0,0.08);
    background: #f8f9fa;
}

.product-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 1;
}

.product-list-section .product-image {
    aspect-ratio: auto;
    height: 240px;
    border-radius: 8px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.product-list-section .product-image img {
    object-fit: contain;
    width: calc(100% - 16px);
    height: calc(100% - 16px);
    margin: 8px;
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-list-section .product-card:hover .product-image img {
    transform: none;
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.product-overlay .btn {
    transform: translateY(20px);
    transition: var(--transition);
}

.product-card:hover .product-overlay .btn {
    transform: translateY(0);
}

.product-badges {
    position: absolute;
    top: 16px;
    left: 16px;
    display: flex;
    gap: 8px;
}

.badge {
    padding: 6px 14px;
    font-size: 0.8125rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    color: #fff;
}

.badge-hot { background: var(--danger-color); }
.badge-new { background: var(--success-color); }

.product-actions {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover .product-actions {
    opacity: 1;
}

.action-btn {
    width: 44px;
    height: 44px;
    background: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    transition: var(--transition);
}

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

.product-info {
    padding: 24px;
    text-align: center;
}

.product-list-section .product-info {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 18px;
    text-align: left;
}

.product-list-section .product-head {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
}

.product-title {
    font-size: 1.0625rem;
    font-weight: 500;
}

.product-list-section .product-title {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
    width: 100%;
    display: -webkit-box;
    line-clamp: 2;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.35;
    min-height: calc(1.35em * 2);
}

.product-list-section .product-title a {
    display: block;
}

.product-title a {
    color: var(--text-dark);
}

.product-title a:hover {
    color: var(--primary-color);
}

.product-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 14px;
    font-size: 0.9375rem;
}

.product-list-section .product-meta {
    margin-top: auto;
}

.product-views {
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 4px;
}

.product-link {
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 4px;
}

.product-list-section .product-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    border-radius: 20px;
    background: var(--primary-color);
    color: #fff;
    font-size: 0.875rem;
    font-weight: 600;
    white-space: nowrap;
}

.product-list-section .product-link:hover {
    background: var(--primary-dark);
    color: #fff;
}

/* ========== 解决方案 ========== */
.solutions-section {
    background: var(--bg-color);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.solution-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 380px;
}

.solution-image {
    width: 100%;
    height: 100%;
}

.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 {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 30px;
    background: linear-gradient(transparent, rgba(0,0,0,0.9));
    color: #fff;
    transform: translateY(60px);
    transition: var(--transition);
}

.solution-card:hover .solution-content {
    transform: translateY(0);
}

.solution-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.solution-desc {
    font-size: 0.9375rem;
    opacity: 0.8;
    margin-bottom: 16px;
    opacity: 0;
    transition: var(--transition);
}

.solution-card:hover .solution-desc {
    opacity: 0.8;
}

.solution-link {
    color: var(--accent-color);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
    opacity: 0;
    transition: var(--transition);
}

.solution-card:hover .solution-link {
    opacity: 1;
}

.solution-info {
    display: none;
}

/* ========== 新闻资讯 ========== */
.news-section {
    background: var(--bg-light);
}

.news-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.news-featured {
    height: 100%;
}

.featured-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.featured-image {
    position: relative;
    height: 320px;
    overflow: hidden;
}

.featured-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-date {
    position: absolute;
    top: 24px;
    left: 24px;
    background: var(--primary-color);
    color: #fff;
    padding: 14px 18px;
    border-radius: var(--radius);
    text-align: center;
}

.news-date .day {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
}

.news-date .month {
    display: block;
    font-size: 0.8125rem;
    margin-top: 4px;
}

.featured-content {
    padding: 35px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.featured-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 18px;
    line-height: 1.4;
}

.featured-title a {
    color: var(--text-dark);
}

.featured-title a:hover {
    color: var(--primary-color);
}

.featured-desc {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 20px;
    flex: 1;
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary-color);
    font-weight: 500;
}

.read-more:hover {
    gap: 10px;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.news-item {
    display: flex;
    gap: 28px;
    background: #fff;
    padding: 28px;
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.news-item:hover {
    box-shadow: var(--shadow);
}

.news-item-date {
    flex-shrink: 0;
    text-align: center;
    padding-right: 28px;
    border-right: 1px solid var(--border-color);
}

.news-item-date .day {
    display: block;
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.news-item-date .month {
    display: block;
    font-size: 0.9375rem;
    color: var(--text-light);
    margin-top: 6px;
}

.news-item-content {
    flex: 1;
}

.news-item-title {
    font-size: 1.1875rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.news-item-title a {
    color: var(--text-dark);
}

.news-item-title a:hover {
    color: var(--primary-color);
}

.news-item-desc {
    color: var(--text-light);
    font-size: 0.9375rem;
}

/* ========== 合作伙伴 ========== */
.partners-section {
    background: var(--bg-color);
}

.partners-slider {
    overflow: hidden;
}

.partners-track {
    display: flex;
    gap: 40px;
    animation: scroll 30s linear infinite;
}

.partner-item {
    flex-shrink: 0;
    width: 160px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: var(--radius);
    padding: 16px;
    transition: var(--transition);
}

.partner-item:hover {
    box-shadow: var(--shadow);
}

.partner-item img {
    max-width: 100%;
    max-height: 100%;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: var(--transition);
}

.partner-item:hover img {
    filter: grayscale(0);
    opacity: 1;
}

@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ========== CTA区块 ========== */
.cta-section {
    position: relative;
    padding: 100px 0;
}

.cta-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.cta-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(37,99,235,0.9) 0%, rgba(15,23,42,0.9) 100%);
}

.cta-content {
    position: relative;
    z-index: 2;
    color: #fff;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-desc {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 32px;
}

.cta-btns {
    display: flex;
    justify-content: center;
    gap: 16px;
}

/* ========== 页脚 ========== */
.site-footer {
    background: var(--secondary-color);
    color: rgba(255,255,255,0.8);
}

.footer-main {
    padding: 100px 0 70px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.8fr 1fr 1fr 1fr 1.5fr;
    gap: 50px;
}

.footer-logo {
    margin-bottom: 24px;
}

.footer-logo img {
    height: 50px;
    filter: brightness(0) invert(1);
}

.footer-desc {
    font-size: 1rem;
    line-height: 1.9;
    margin-bottom: 28px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-color);
    color: #fff;
}

.footer-title {
    font-size: 1.1875rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 28px;
    position: relative;
    padding-bottom: 14px;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 45px;
    height: 2px;
    background: var(--primary-color);
}

.footer-links li {
    margin-bottom: 14px;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    font-size: 1rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: #fff;
    padding-left: 6px;
}

.contact-list li {
    display: flex;
    gap: 14px;
    margin-bottom: 18px;
    font-size: 1rem;
}

.contact-list i {
    color: var(--primary-light);
    font-size: 1.125rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-list a {
    color: rgba(255,255,255,0.7);
}

.contact-list a:hover {
    color: #fff;
}

.footer-qrcode {
    margin-top: 24px;
    text-align: center;
}

.footer-qrcode img {
    width: 100px;
    height: 100px;
    border-radius: var(--radius);
    margin: 0 auto 8px;
}

.footer-qrcode p {
    font-size: 0.8125rem;
    opacity: 0.7;
}

/* 友情链接 */
.footer-links-bar {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
}

.links-inner {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.links-title {
    flex-shrink: 0;
    font-size: 0.875rem;
    color: rgba(255,255,255,0.6);
}

.links-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
}

.links-list a {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.5);
}

.links-list a:hover {
    color: rgba(255,255,255,0.8);
}

/* 版权信息 */
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
}

.copyright-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright-text {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.5);
}

.footer-extra {
    display: flex;
    gap: 20px;
}

.footer-extra a {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.5);
}

.footer-extra a:hover {
    color: rgba(255,255,255,0.8);
}

/* ========== 回到顶部 ========== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
}

/* ========== 悬浮客服 ========== */
.float-contact {
    position: fixed;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 998;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.float-item {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    box-shadow: var(--shadow);
}

.float-item:hover {
    background: var(--primary-dark);
    transform: scale(1.1);
}

.float-item[data-tooltip]::before {
    content: attr(data-tooltip);
    position: absolute;
    right: 60px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--secondary-color);
    color: #fff;
    padding: 8px 16px;
    border-radius: var(--radius);
    font-size: 0.875rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.float-item:hover[data-tooltip]::before {
    opacity: 1;
    visibility: visible;
}

.qrcode-popup {
    position: absolute;
    right: 60px;
    top: 50%;
    transform: translateY(-50%);
    background: #fff;
    padding: 16px;
    min-width: 180px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    text-align: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.qrcode-trigger:hover .qrcode-popup {
    opacity: 1;
    visibility: visible;
}

.footer-contact .contact-list li.qrcode-trigger {
    position: relative;
}

.footer-contact .qrcode-popup {
    right: auto;
    top: auto;
    left: 0;
    bottom: calc(100% + 10px);
    transform: none;
}

.qrcode-popup img {
    width: 160px;
    max-width: 100%;
    height: auto;
    max-height: 240px;
    object-fit: contain;
    display: block;
    margin: 0 auto 8px;
    margin-bottom: 8px;
}

.qrcode-popup p {
    font-size: 0.8125rem;
    color: var(--text-light);
}

/* ========== 内页Banner ========== */
.page-banner {
    position: relative;
    height: 350px;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
}

.page-banner.has-bg-img {
    overflow: hidden;
    background-image: none;
}

.page-banner.has-bg-img .page-banner-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(15,23,42,0.85) 0%, rgba(37,99,235,0.7) 100%);
}

.banner-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #fff;
}

.banner-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.9375rem;
}

.breadcrumb a {
    color: rgba(255,255,255,0.8);
}

.breadcrumb a:hover {
    color: #fff;
}

.breadcrumb .sep {
    color: rgba(255,255,255,0.5);
}

.banner-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
}

.banner-wave svg {
    display: block;
    width: 100%;
    height: 60px;
}

/* ========== 文章列表页 ========== */
.article-list-section {
    background: var(--bg-light);
}

.list-layout {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 50px;
}

.category-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 30px;
}

.cat-item {
    padding: 10px 24px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-color);
    font-size: 0.9375rem;
    transition: var(--transition);
}

.cat-item:hover,
.cat-item.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

.article-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.article-item {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 36px;
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.article-item:hover {
    box-shadow: var(--shadow-lg);
}

.article-thumb {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.article-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.article-item:hover .article-thumb img {
    transform: scale(1.1);
}

.article-date {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--primary-color);
    color: #fff;
    padding: 10px 14px;
    border-radius: var(--radius);
    text-align: center;
}

.article-date .day {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1;
}

.article-date .month {
    display: block;
    font-size: 0.75rem;
    margin-top: 2px;
}

.article-content {
    padding: 28px 28px 28px 0;
    display: flex;
    flex-direction: column;
}

.article-title {
    font-size: 1.375rem;
    font-weight: 600;
    margin-bottom: 14px;
    line-height: 1.4;
}

.article-title a {
    color: var(--text-dark);
}

.article-title a:hover {
    color: var(--primary-color);
}

.article-excerpt {
    color: var(--text-light);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: 16px;
    flex: 1;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 16px;
    font-size: 0.875rem;
    color: var(--text-light);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.article-tag {
    padding: 4px 12px;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    color: var(--text-light);
}

.article-tag:hover {
    background: var(--primary-color);
    color: #fff;
}

/* ========== 侧边栏 ========== */
.sidebar-widget {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
}

.widget-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-color);
}

.hot-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px dashed var(--border-color);
}

.hot-list li:last-child {
    border-bottom: none;
}

.hot-num {
    width: 24px;
    height: 24px;
    background: var(--bg-light);
    color: var(--text-light);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.hot-list li:nth-child(-n+3) .hot-num {
    background: var(--primary-color);
    color: #fff;
}

.hot-list a {
    color: var(--text-color);
    font-size: 0.9375rem;
    line-height: 1.5;
}

.hot-list a:hover {
    color: var(--primary-color);
}

.recommend-products {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.recommend-item {
    display: flex;
    gap: 12px;
}

.recommend-img {
    width: 80px;
    height: 80px;
    border-radius: var(--radius);
    overflow: hidden;
    flex-shrink: 0;
}

.recommend-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.recommend-item h5 {
    font-size: 0.9375rem;
    font-weight: 500;
}

.recommend-item h5 a {
    color: var(--text-color);
}

.recommend-item h5 a:hover {
    color: var(--primary-color);
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag-item {
    padding: 6px 14px;
    background: var(--bg-light);
    border-radius: var(--radius);
    font-size: 0.8125rem;
    color: var(--text-light);
    transition: var(--transition);
}

.tag-item:hover {
    background: var(--primary-color);
    color: #fff;
}

.contact-widget {
    background: var(--primary-color);
    color: #fff;
}

.contact-widget .widget-title {
    color: #fff;
    border-bottom-color: rgba(255,255,255,0.3);
}

.contact-info p {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 0.9375rem;
}

.contact-info i {
    margin-top: 3px;
}

/* ========== 分页 ========== */
.pagination-wrapper {
    margin-top: 40px;
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 14px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-color);
    font-size: 0.9375rem;
    transition: var(--transition);
}

.pagination a:hover,
.pagination .active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

/* ========== 文章详情页 ========== */
.article-banner {
    position: relative;
    padding: 120px 0 80px;
    margin-top: -80px;
}

.article-banner .banner-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
}

.article-banner .banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(15,23,42,0.9) 0%, rgba(37,99,235,0.8) 100%);
}

.article-header {
    position: relative;
    z-index: 2;
    color: #fff;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.article-header .breadcrumb {
    margin-bottom: 24px;
}

.article-header .article-title {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 20px;
}

.article-header .article-meta {
    justify-content: center;
    color: rgba(255,255,255,0.8);
}

.article-meta-bar {
    background: #fff;
    width: 100%;
}

.article-meta-bar-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px 20px 18px;
    text-align: center;
    border-bottom: 1px solid #eee;
}

.article-meta-bar-title {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.article-meta-bar-meta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: #666;
}

.article-meta-bar-meta .sep {
    opacity: 0.9;
}

.article-detail-section {
    background: var(--bg-light);
}

.article-detail-section.section-padding {
    padding-top: 32px;
}

.detail-layout {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 50px;
}

.article-body {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 50px;
}

.article-body .article-content {
    padding: 0;
    font-size: 1.0625rem;
    line-height: 2;
    color: var(--text-color);
}

.article-body .article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    margin: 20px 0;
}

.article-body .article-content p {
    margin-bottom: 16px;
}

.article-body .article-content h2,
.article-body .article-content h3,
.article-body .article-content h4 {
    margin: 30px 0 16px;
    color: var(--text-dark);
}

.article-tags {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.tags-label {
    color: var(--text-light);
    margin-right: 8px;
}

.tag-link {
    display: inline-block;
    padding: 6px 16px;
    background: var(--bg-light);
    border-radius: var(--radius);
    color: var(--text-light);
    font-size: 0.875rem;
    margin: 4px;
    transition: var(--transition);
}

.tag-link:hover {
    background: var(--primary-color);
    color: #fff;
}

.article-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.action-btn.collect-btn {
    padding: 10px 24px;
    background: var(--bg-light);
    border-radius: var(--radius);
    color: var(--text-color);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.action-btn.collect-btn:hover {
    background: var(--danger-color);
    color: #fff;
}

.share-btns {
    display: flex;
    align-items: center;
    gap: 12px;
}

.share-btns span {
    color: var(--text-light);
}

.share-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    transition: var(--transition);
}

.share-btn.weibo { background: #e6162d; }
.share-btn.wechat { background: #07c160; }
.share-btn.qq { background: #12b7f5; }

.share-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

/* 上下篇导航 */
.article-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 30px;
}

.nav-prev,
.nav-next {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
}

.nav-prev:hover,
.nav-next:hover {
    box-shadow: var(--shadow);
}

.nav-next {
    text-align: right;
}

.nav-label {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 8px;
}

.nav-next .nav-label {
    justify-content: flex-end;
}

.nav-title {
    color: var(--text-dark);
    font-weight: 500;
    line-height: 1.5;
}

.nav-title:hover {
    color: var(--primary-color);
}

.nav-empty {
    color: var(--text-light);
}

/* 相关文章 */
.related-articles {
    margin-top: 40px;
}

.related-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-color);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.related-item {
    display: flex;
    gap: 16px;
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.related-item:hover {
    box-shadow: var(--shadow);
}

.related-img {
    width: 120px;
    height: 90px;
    flex-shrink: 0;
    overflow: hidden;
}

.related-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.related-info {
    padding: 12px 12px 12px 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.related-info h4 {
    font-size: 0.9375rem;
    font-weight: 500;
    margin-bottom: 8px;
    line-height: 1.4;
}

.related-info h4 a {
    color: var(--text-dark);
}

.related-info h4 a:hover {
    color: var(--primary-color);
}

.related-date {
    font-size: 0.8125rem;
    color: var(--text-light);
}

/* 侧边栏CTA */
.cta-widget {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    text-align: center;
}

.cta-widget .cta-content h4 {
    color: #fff;
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.cta-widget .cta-content p {
    color: rgba(255,255,255,0.8);
    font-size: 0.9375rem;
    margin-bottom: 20px;
}

/* ========== 产品列表页 ========== */
.product-list-section {
    background: var(--bg-light);
}

.product-category-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 24px;
}

.cat-btn {
    padding: 10px 24px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-color);
    font-size: 0.9375rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.cat-btn:hover,
.cat-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

.cat-dropdown {
    position: relative;
}

.cat-submenu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 100;
}

.cat-dropdown:hover .cat-submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.cat-submenu li a {
    display: block;
    padding: 10px 20px;
    color: var(--text-color);
    font-size: 0.9375rem;
}

.cat-submenu li a:hover,
.cat-submenu li a.active {
    background: var(--bg-light);
    color: var(--primary-color);
}

/* 筛选 */
.product-filter {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 0px;
}

.product-filter .filter-toggle {
    display: none;
}

.filter-row {
    display: flex;
    align-items: flex-start;
    padding: 12px 0;
    border-bottom: 1px dashed var(--border-color);
}

.filter-row:last-child {
    border-bottom: none;
}

.filter-label {
    width: 100px;
    flex-shrink: 0;
    font-weight: 500;
    color: var(--text-dark);
    padding-top: 6px;
}

.filter-options {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    flex: 1;
}

.filter-option {
    padding: 6px 16px;
    background: var(--bg-light);
    border-radius: var(--radius);
    color: var(--text-color);
    font-size: 0.875rem;
    transition: var(--transition);
}

.filter-option:hover,
.filter-option.active {
    background: var(--primary-color);
    color: #fff;
}

.grid-clear {
    clear: both;
}

/* 产品CTA */
.product-cta {
    background: var(--primary-color);
    padding: 50px 0;
}

.product-cta .cta-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.product-cta .cta-text h3 {
    color: #fff;
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.product-cta .cta-text p {
    color: rgba(255,255,255,0.8);
}

.product-cta .cta-actions {
    display: flex;
    gap: 16px;
}

/* ========== 产品详情页 ========== */
.breadcrumb-bar {
    background: var(--bg-light);
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb-bar .breadcrumb {
    justify-content: flex-start;
    color: #999;
    font-size: 14px;
}

.breadcrumb-bar .breadcrumb a {
    color: #999;
    transition: var(--transition);
}

.breadcrumb-bar .breadcrumb a:hover {
    color: var(--primary-color);
}

.breadcrumb-home-icon {
    color: var(--primary-color);
    margin-right: 8px;
}

.product-detail-section {
    background: var(--bg-light);
}

.product-detail-top {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    margin-bottom: 20px;
}

/* 产品图片画廊 */
.product-gallery {
    position: sticky;
    top: 100px;
}

.gallery-main {
    margin-bottom: 16px;
}

.main-image {
    position: relative;
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 1;
}

.main-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.zoom-btn {
    position: absolute;
    bottom: 16px;
    right: 16px;
    width: 44px;
    height: 44px;
    background: rgba(0,0,0,0.5);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.gallery-thumbs {
    display: flex;
    gap: 12px;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 2px;
}

.gallery-thumbs::-webkit-scrollbar {
    height: 6px;
}

.gallery-thumbs::-webkit-scrollbar-thumb {
    background: rgba(0,0,0,0.15);
    border-radius: 999px;
}

.gallery-thumbs::-webkit-scrollbar-track {
    background: transparent;
}

.thumb-item {
    width: 80px;
    height: 80px;
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    flex: 0 0 auto;
}

.gallery-fancybox-links {
    display: none;
}

.thumb-item.active,
.thumb-item:hover {
    border-color: var(--primary-color);
}

.thumb-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.magnifier-lens {
    position: absolute;
    width: 120px;
    height: 120px;
    border: 2px solid var(--primary-color);
    background: rgba(0, 123, 255, 0.15);
    display: block;
    pointer-events: none;
    z-index: 2;
    visibility: hidden;
    opacity: 0;
}

.magnifier-result {
    display: block;
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    background-repeat: no-repeat;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
}

.product-gallery.magnifier-active .magnifier-lens {
    visibility: visible;
    opacity: 1;
}

.magnifier-result.magnifier-active {
    visibility: visible;
    opacity: 1;
}

@media (min-width: 992px) {
    .product-gallery .gallery-main {
        position: relative;
        overflow: visible;
    }

    .magnifier-result {
        position: fixed;
        top: 0;
        left: 0;
        width: 0;
        height: 0;
        z-index: 99999;
    }
}

@media (max-width: 991px) {
    .magnifier-lens,
    .magnifier-result {
        display: none !important;
    }
}

/* 产品信息 */
.product-info-main {
    padding: 30px 0;
}

.product-info-main .product-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
    line-height: 1.4;
}

.product-meta-info {
    margin-bottom: 20px;
    color: #666;
    font-size: 0.9375rem;
    line-height: 1.7;
}

.product-meta-info .meta-item {
    display: block;
}

.product-summary {
    padding: 20px;
    background: var(--bg-light);
    border-radius: var(--radius);
    margin-bottom: 24px;
}

.product-summary p {
    color: var(--text-color);
    line-height: 1.8;
}

.product-attr {
    display: flex;
    padding: 12px 0;
    border-bottom: 1px dashed var(--border-color);
}

.attr-label {
    width: 100px;
    color: var(--text-light);
    flex-shrink: 0;
}

.attr-value {
    color: var(--text-dark);
}

.product-actions-main {
    display: flex;
    gap: 16px;
    margin: 30px 0;
}

.product-actions-main .form-inquiry-btn {
    display: inline-flex;
}

.product-form-modal {
    padding: 20px;
}

.product-form-modal input,
.product-form-modal textarea {
    width: 100%;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 12px 14px;
    margin-bottom: 12px;
    outline: none;
}

.product-form-modal textarea {
    resize: vertical;
}

.product-form-modal input[type="submit"] {
    width: 100%;
    background: var(--primary-color);
    color: #fff;
    border: 0;
    border-radius: 8px;
    padding: 12px 16px;
    font-weight: 600;
}

.product-inquiry-modal {
    position: fixed;
    inset: 0;
    z-index: 100000;
}

.product-inquiry-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
}

.product-inquiry-modal__dialog {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: min(560px, calc(100vw - 32px));
    max-height: min(720px, calc(100vh - 32px));
    background: #fff;
    border-radius: 12px;
    overflow: auto;
    box-shadow: 0 18px 50px rgba(0,0,0,0.22);
}

.product-inquiry-modal__close {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 36px;
    height: 36px;
    border-radius: 999px;
    background: rgba(0,0,0,0.08);
    color: #111;
    font-size: 22px;
    line-height: 36px;
    text-align: center;
}

.product-inquiry-modal__body {
    padding: 20px;
}

.product-inquiry-summary {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: #f8f9fb;
    margin-bottom: 14px;
}

.product-inquiry-summary__thumb {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    overflow: hidden;
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.06);
    flex: 0 0 auto;
}

.product-inquiry-summary__thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.product-inquiry-summary__title {
    flex: 1;
    min-width: 0;
    font-size: 14px;
    font-weight: 600;
    color: #333;
    line-height: 1.35;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.product-captcha {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.product-captcha input[type="text"] {
    flex: 1;
    min-width: 140px;
}

.product-captcha img {
    width: 80px;
    height: 35px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.product-captcha__hint {
    color: #999;
    font-size: 13px;
}

.product-captcha a {
    color: var(--primary-color);
    font-size: 13px;
    text-decoration: none;
}

.product-guarantee {
    display: flex;
    gap: 24px;
    padding: 20px;
    background: var(--bg-light);
    border-radius: var(--radius);
    margin-bottom: 24px;
}

.guarantee-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-color);
    font-size: 0.9375rem;
}

.guarantee-item i {
    color: var(--success-color);
    font-size: 1.25rem;
}

.product-share {
    display: flex;
    align-items: center;
    gap: 12px;
}

.product-share span {
    color: var(--text-light);
}

/* 产品详情内容 */
.product-detail-content {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.detail-tabs .tabs-nav {
    display: flex;
    background: var(--bg-light);
    border-bottom: 1px solid var(--border-color);
}

.detail-tabs .tab-btn {
    padding: 16px 32px;
    background: transparent;
    border: none;
    border-radius: 0;
    color: var(--text-color);
    font-weight: 500;
    position: relative;
}

.detail-tabs .tab-btn.active {
    background: #fff;
    color: var(--primary-color);
}

.detail-tabs .tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
}

.tabs-content {
    padding: 40px;
}

.detail-body {
    line-height: 1.9;
    color: var(--text-color);
}

.detail-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    margin: 20px 0;
}

.params-table {
    width: 100%;
    border-collapse: collapse;
}

.params-table th,
.params-table td {
    padding: 14px 20px;
    border: 1px solid var(--border-color);
    text-align: left;
}

.params-table th {
    width: 150px;
    background: var(--bg-light);
    color: var(--text-dark);
    font-weight: 500;
}

.service-content h4 {
    font-size: 1.125rem;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.service-content ul {
    list-style: disc;
    padding-left: 20px;
}

.service-content li {
    margin-bottom: 10px;
    color: var(--text-color);
}

/* 相关产品 */
.related-products {
    margin-top: 60px;
}

.related-products .related-title {
    font-size: 1.5rem;
    text-align: center;
    border-bottom: none;
    margin-bottom: 30px;
}

.related-products .related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.related-products .product-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transform: none;
}

.related-products .product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 22px rgba(0,0,0,0.08);
    background: #f8f9fa;
}

.related-products .product-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 1 / 1;
    border-radius: 8px;
}

.related-products .product-image a {
    display: block;
    width: 100%;
    height: 100%;
}

.related-products .product-image img {
    object-fit: contain;
    width: calc(100% - 16px);
    height: calc(100% - 16px);
    margin: 8px;
}

.related-products .product-info {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 18px;
    text-align: left;
}

.related-products .product-head {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
}

.related-products .product-title {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
    width: 100%;
    display: -webkit-box;
    line-clamp: 2;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.35;
    min-height: calc(1.35em * 2);
}

.related-products .product-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    border-radius: 20px;
    background: var(--primary-color);
    color: #fff;
    font-size: 0.875rem;
    font-weight: 600;
    white-space: nowrap;
}

.related-products .product-link:hover {
    background: var(--primary-dark);
    color: #fff;
}

@media (max-width: 767px) {
    .related-products .related-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
        padding-left: 8px;
        padding-right: 8px;
    }

    .related-products .product-image {
        aspect-ratio: auto;
        height: 140px;
    }

    .related-products .product-title {
        font-size: 0.875rem;
        min-height: calc(1.35em * 2);
    }

    .related-products .product-link {
        padding: 6px 12px;
        font-size: 0.8125rem;
    }
}

/* ========== 单页面 ========== */
.single-page-section {
    background: var(--bg-light);
}

.single-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 50px;
}

.sidebar-nav {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 24px;
}

.sidebar-title {
    background: var(--primary-color);
    color: #fff;
    padding: 20px 24px;
    font-size: 1.125rem;
    font-weight: 600;
}

.sidebar-menu li {
    border-bottom: 1px solid var(--border-color);
}

.sidebar-menu li:last-child {
    border-bottom: none;
}

.sidebar-menu a {
    display: block;
    padding: 14px 24px;
    color: var(--text-color);
    transition: var(--transition);
}

.sidebar-menu li.active a,
.sidebar-menu a:hover {
    background: var(--bg-light);
    color: var(--primary-color);
    padding-left: 30px;
}

.sidebar-contact {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 24px;
}

.sidebar-contact h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-color);
}

.sidebar-contact .contact-list li {
    display: flex;
    gap: 12px;
    margin-bottom: 14px;
    font-size: 0.9375rem;
    color: var(--text-color);
}

.sidebar-contact .contact-list i {
    color: var(--primary-color);
    font-size: 1.125rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-qrcode {
    margin-top: 20px;
    text-align: center;
}

.contact-qrcode img {
    width: 120px;
    height: 120px;
    border-radius: var(--radius);
    margin: 0 auto 8px;
}

.contact-qrcode p {
    font-size: 0.875rem;
    color: var(--text-light);
}

.single-main {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 50px;
}

.single-header {
    margin-bottom: 35px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.single-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
}

.single-content {
    line-height: 2;
    color: var(--text-color);
    font-size: 1.0625rem;
}

.single-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    margin: 20px 0;
}

.single-content p {
    margin-bottom: 16px;
}

.single-content h2,
.single-content h3,
.single-content h4 {
    margin: 30px 0 16px;
    color: var(--text-dark);
}

/* ========== 登录弹窗 ========== */
.login-modal {
    display: none;
}

.login-modal-content {
    background: #fff;
    border-radius: var(--radius-lg);
    max-width: 420px;
    margin: 0 auto;
    overflow: hidden;
}

.login-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.login-modal-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.login-modal-body {
    padding: 30px 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.verify-group {
    display: flex;
    gap: 12px;
}

.verify-input {
    flex: 1;
}

.verify-img {
    height: 48px;
    border-radius: var(--radius);
    cursor: pointer;
}

.login-footer {
    display: flex;
    justify-content: space-between;
    margin-top: 16px;
    font-size: 0.9375rem;
}

.login-footer a {
    color: var(--text-light);
}

.login-footer a:hover {
    color: var(--primary-color);
}

.social-login {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.social-login p {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 16px;
}

.social-btns {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.social-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.25rem;
    transition: var(--transition);
}

.social-btn.qq { background: #12b7f5; }
.social-btn.wechat { background: #07c160; }
.social-btn.weibo { background: #e6162d; }

.social-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
    color: #fff;
}

/* ========== 响应式设计 ========== */
@media (max-width: 1600px) {
    .container {
        max-width: 1400px;
        padding: 0 30px;
    }
}

@media (max-width: 1400px) {
    .container {
        max-width: 1200px;
        padding: 0 30px;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 30px;
    }
}

@media (max-width: 1200px) {
    .container {
        max-width: 100%;
        padding: 0 24px;
    }
    
    .section-padding {
        padding: 80px 0;
    }
    
    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-nav:nth-child(4) {
        display: none;
    }
    
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .solution-card {
        height: 320px;
    }
}

/* ========== AOS动画 ========== */
.aos-init {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.aos-init.aos-fade-up {
    transform: translateY(30px);
}

.aos-init.aos-fade-down {
    transform: translateY(-30px);
}

.aos-init.aos-fade-left {
    transform: translateX(30px);
}

.aos-init.aos-fade-right {
    transform: translateX(-30px);
}

.aos-init.aos-zoom-in {
    transform: scale(0.9);
}

.aos-animate {
    opacity: 1;
    transform: translateY(0) translateX(0) scale(1);
}

/* ========== 辅助类 ========== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-white { color: #fff; }

.bg-light { background-color: var(--bg-light); }
.bg-gray { background-color: var(--bg-gray); }
.bg-primary { background-color: var(--primary-color); }

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }
.mt-40 { margin-top: 40px; }
.mb-40 { margin-bottom: 40px; }

.pt-0 { padding-top: 0; }
.pb-0 { padding-bottom: 0; }

/* 清除浮动 */
.clearfix::after {
    content: "";
    display: table;
    clear: both;
}

/* 隐藏元素 */
.hidden {
    display: none !important;
}

/* 可访问性 - 屏幕阅读器专用 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ========== 打印样式 ========== */
@media print {
    .top-bar,
    .main-header,
    .site-footer,
    .back-to-top,
    .float-contact,
    .search-modal,
    .mobile-menu,
    .mobile-overlay {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
        background: #fff;
    }
    
    a {
        color: #000;
        text-decoration: underline;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
}