/* 全局样式 - LF Technology 主题 */

/* 跨浏览器兼容性样式 Cross-browser compatibility styles */
/* IE11 和旧版浏览器支持 IE11 and legacy browser support */
.ie-browser {
    /* IE11 特定样式 */
}

.no-css-variables {
    /* 当CSS变量不支持时的备用样式 */
}

.no-intersection-observer {
    /* 当IntersectionObserver不支持时的备用动画 */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #2c3e50;
    background-color: #fafafa;
    padding-top: var(--fixed-header-offset, 120px);
}

/* CSS变量备用方案 CSS variables fallback */
body:not(.no-css-variables) {
    /* 现代浏览器使用CSS变量 */
}

body.no-css-variables {
    /* 旧版浏览器备用样式 */
    color: #2c3e50;
    background-color: #fafafa;
}

.no-css-variables .main-nav {
    background: #ffffff;
    border-bottom: 1px solid #e9ecef;
}

.no-css-variables .btn-primary {
    background: #1a365d;
    color: #ffffff;
}

.no-css-variables .btn-secondary {
    background: #ca6434; 
    color: #ffffff;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px 50px 0;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

/* 品牌配色方案 - 轮胎外贸（橙色+深灰） */
:root {
    --primary-color: #f26c2e;
    --secondary-color: #4d4d4d;
    --accent-color: #ff8f4a;
    --gradient-primary: linear-gradient(135deg, #d9551b 0%, #f26c2e 100%);
    --gradient-secondary: linear-gradient(135deg, #ff9d5e 0%, #f26c2e 100%);
    --text-dark: #2b2b2b;
    --text-light: #7a7a7a;
    --background-light: #ffffff;
    --background-gray: #f5f5f5;
    --border-color: #e3e8ef;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --error-color: #e74c3c;
    --topbar-height: 52px;
    --top-bar-height: 52px;
}

/* 顶部导航栏 - 玻璃拟态效果 */
.top-bar {
    display: block;
    background: rgba(36, 36, 36, 0.95);
    backdrop-filter: blur(10px);
    color: #fff;
    padding: 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 3000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    height: var(--topbar-height);
    transition: transform 0.3s ease;
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    padding: 0 20px;
}

.top-bar-left, .top-bar-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.top-link {
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    opacity: 0.9;
    transition: opacity 0.3s ease;
}

.top-link:hover {
    opacity: 1;
}

.language-flag {
    display: flex;
    align-items: center;
    gap: 5px;
}

.language-flag img {
    width: 20px;
    height: 20px;
    border-radius: 50%;
}

/* 主导航栏 - 现代简约 */
.main-nav {
    background: var(--background-light);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: var(--top-bar-height, 50px);
    left: 0;
    right: 0;
    z-index: 2000;
    transition: all 0.3s ease;
}

.main-nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px; /* 设置 logo 与文字之间的间距为 10px */
}

.logo img {
    height: 80px;
    transition: transform 0.3s ease;
}

.logo:hover img {
    transform: scale(1.05);
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

/* 导航菜单 */
.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}
.main-nav.open .nav-menu { display: block; }

.nav-menu li {
    position: relative;
}

.nav-menu a {
    font-weight: 500;
    color: var(--text-dark);
    padding: 10px 0;
    position: relative;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: var(--secondary-color);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-secondary);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

.has-children { position: relative; }
.has-children > .dropdown-toggle { padding-right: 32px; }
.has-children > .dropdown-toggle::before { content: ''; }
.submenu-toggle { position: absolute; right: 0; top: 50%; transform: translateY(-50%); width: 24px; height: 24px; border: none; background: transparent; cursor: pointer; }
.submenu-toggle::before {
    content: '';
    display: block;
    width: 10px;
    height: 10px;
    border-right: 2px solid var(--text-dark);
    border-bottom: 2px solid var(--text-dark);
    transform: rotate(45deg);
    margin: 5px auto;
    opacity: 0.9;
}
.has-children.open > .submenu-toggle::before {
    transform: rotate(-135deg);
}
.sub-menu { position: absolute; top: 100%; left: 0; background: #fff; border-radius: 8px; box-shadow: 0 10px 20px rgba(0,0,0,0.08); min-width: 200px; padding: 10px 0; display: none; z-index: 1000; list-style: none; }
.sub-menu li a { display: block; padding: 10px 16px; color: var(--text-dark); position: relative; padding-left: 30px; }
.sub-menu li a::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--accent-color); position: absolute; left: 14px; top: 50%; transform: translateY(-50%); opacity: 0.9; }
.nav-menu li:hover > .sub-menu { display: block; }
.mobile-menu-btn { display: none; width: 36px; height: 28px; border: none; background: transparent; padding: 0; margin-left: 10px; cursor: pointer; }
.mobile-menu-btn span { display: block; height: 3px; width: 100%; background-color: var(--text-dark); border-radius: 3px; transition: all 0.3s ease; margin: 6px 0; }
.mobile-menu-btn.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* 英雄区域 - 科技感渐变 */
.hero {
    position: relative;
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    overflow: hidden;
    z-index: 0;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    overflow: hidden;
}

.hero-video { display: none; }

/* 轮播图样式 */
.hero-slider { position: absolute; inset: 0; z-index: 1; }
.hero-slider::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse at center, rgba(0,0,0,0.12) 0%, rgba(0,0,0,0.35) 70%, rgba(0,0,0,0.45) 100%); z-index: 1; pointer-events: none; }
.hero-slider .slide { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0; transition: opacity 0.6s ease; z-index: 0; }
.hero-slider .slide.active { opacity: 1; }
.hero-caption { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; color: #fff; padding: 0 20px; z-index: 10; }
.caption-box { background: rgba(0,0,0,0.25); backdrop-filter: blur(2px); border: 1px solid rgba(255,255,255,0.12); box-shadow: 0 12px 40px rgba(0,0,0,0.25); border-radius: 16px; padding: 20px 28px; display: inline-flex; flex-direction: column; align-items: center; max-width: 900px; z-index: 11; }
.hero-caption h1 { font-size: 3rem; font-weight: 800; letter-spacing: .5px; margin-bottom: 16px; color: #fff; }
.hero-caption p { font-size: 1.2rem; margin-bottom: 24px; color: #f5f5f5;  }
.hero-arrow { position: absolute; top: 50%; transform: translateY(-50%); width: 44px; height: 44px; border: none; border-radius: 50%; background: rgba(0,0,0,0.35); color: #fff; display: flex; align-items: center; justify-content: center; cursor: pointer; z-index: 9; }
.hero-arrow.prev { left: 16px; }
.hero-arrow.next { right: 16px; }
.hero-arrow:hover { background: rgba(0,0,0,0.5); }
.hero-dots { position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%); display: flex; gap: 8px; z-index: 8; }
.hero-dots .dot { width: 10px; height: 10px; border-radius: 50%; border: 2px solid rgba(255,255,255,0.8); background: transparent; cursor: pointer; }
.hero-dots .dot.active { background: var(--accent-color); border-color: var(--accent-color); }

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grid" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M 50 0 L 0 0 0 50" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.15;
}

.hero::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 140px;
    pointer-events: none;
    background: linear-gradient(to bottom, rgba(255,255,255,0) 0%, rgba(255,255,255,0.6) 50%, #ffffff 100%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #fff;
    max-width: 800px;
    padding: 0 20px;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 30px;
    opacity: 0.9;
    line-height: 1.6;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 15px 35px;
    background: var(--gradient-secondary);
    color: #fff;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(242, 108, 46, 0.3);
}

.btn-outline {
    background: transparent;
    border: 2px solid #fff;
    color: #fff;
}

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

/* 主要内容区域 */
.main-content {
    padding: 80px 0;
    background: var(--background-light);
}

.main-content,
.products-section,
.advantages-section,
.trust-section,
.trusted-partners,
.services-section,
.insights-section {
    position: relative;
    z-index: 10;
    scroll-margin-top: var(--fixed-header-offset, 160px);
}

.distributor-section { padding: 60px 0; }
.distributor-content { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; }
.distributor-text .description { margin-bottom: 14px; }
.distributor-image { display: flex; align-items: center; justify-content: center; }
.distributor-image img { width: 100%; max-width: 560px; height: 680px; object-fit: cover; border-radius: 16px; box-shadow: 0 12px 30px rgba(0,0,0,0.12); }

@media (max-width: 992px) {
  .distributor-content { grid-template-columns: 1fr; }
  .distributor-image img { max-width: 100%; height: auto; }
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.subtitle {
    font-size: 1rem;
    color: var(--secondary-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 15px;
}

.title {
    font-size: 2.5rem;
    color: var(--text-dark);
    font-weight: 700;
    margin-bottom: 20px;
}

.description {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 1200px;
    margin: 0 auto;
    line-height: 1.8;
}

/* 产品区域 - 卡片设计 */
.products-section {
    background: var(--background-gray);
    padding: 80px 0;
}

.products-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.products-content.single {
    grid-template-columns: 1fr;
    gap: 40px;
    max-width: 1100px;
    margin: 0 auto;
}

.products-content.single .products-text {
    max-width: 900px;
    margin: 0 auto;
}

.brands-logos { justify-items: center; }

.products-text h3 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 15px;
    font-weight: 600;
}

.brands-gallery { margin: 20px 0; }
.brands-gallery h4 { font-size: 1.1rem; color: var(--secondary-color); margin-bottom: 15px; font-weight: 600; }
.brands-logos { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; align-items: center; }
.brand-logo-card { background: var(--background-light); border-radius: 12px; box-shadow: 0 6px 18px rgba(0,0,0,0.08); padding: 14px 18px; height: 110px; display: flex; align-items: center; justify-content: center; transition: all 0.3s ease; }
.brand-logo-card img { max-width: 100%; max-height: 80px; object-fit: contain; }
.brand-logo-card:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(0,0,0,0.12); }

.brand-categories {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin: 30px 0;
}

.brand-category h4 {
    font-size: 1.1rem;
    color: var(--secondary-color);
    margin-bottom: 15px;
    font-weight: 600;
}

.brands-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.brand-item {
    background: var(--background-light);
    padding: 15px;
    text-align: center;
    border-radius: 8px;
    font-weight: 600;
    color: var(--text-dark);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.brand-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
    background: var(--accent-color);
    color: #fff;
}

.products-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* 优势区域 */
.advantages-section {
    padding: 80px 0;
    background: var(--background-light);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 36px;
    margin-bottom: 60px;
}

.advantage-item {
    text-align: center;
    padding: 30px;
    background: var(--background-light);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.advantage-icon img {
    width: 40px;
    height: 40px;
    filter: brightness(0) invert(1);
}

.advantage-icon svg {
    width: 40px;
    height: 40px;
    stroke: #fff;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.advantage-content h3 {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 15px;
    font-weight: 600;
}

.advantage-content p {
    color: var(--text-light);
    line-height: 1.6;
}

/* 统计数据区域 */
.stats-section {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
    padding: 40px;
    background: var(--gradient-primary);
    border-radius: 20px;
    color: #fff;
}

.stat-item {
    padding: 20px;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
    background: linear-gradient(45deg, #fff, #4a90e2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-text {
    font-size: 1rem;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* 信任区域 */
.trust-section {
    background: var(--background-gray);
    padding: 80px 0;
}

.quality-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.client-categories {
    margin: 30px 0;
}

.client-category {
    margin-bottom: 25px;
    padding: 20px;
    background: var(--background-light);
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.client-category h4 {
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.quality-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* 合作伙伴评价 */
.trusted-partners {
    padding: 80px 0;
    background: var(--background-light);
}

.partners-carousel { position: relative; }
.partners-track { display: flex; overflow: hidden; gap: 20px; scroll-behavior: smooth; scroll-snap-type: x mandatory; padding: 10px 0; }
.partners-track .partner-card { scroll-snap-align: start; flex: 0 0 calc(50% - 10px); }
.carousel-arrow { position: absolute; top: 50%; transform: translateY(-50%); width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--primary-color); color: #fff; display: flex; align-items: center; justify-content: center; cursor: pointer; box-shadow: 0 8px 8px rgba(26,54,93,0.1); z-index: 5; }
.carousel-prev { left: -10px; }
.carousel-next { right: -10px; }

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.partner-card {
    background: var(--background-light);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
}

.partner-card::before {
    content: '"';
    position: absolute;
    top: 20px;
    left: 20px;
    font-size: 4rem;
    color: var(--accent-color);
    opacity: 0.3;
    font-family: Georgia, serif;
}

.partner-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.partner-quote {
    font-style: italic;
    color: var(--text-dark);
    margin-bottom: 20px;
    line-height: 1.6;
    padding-top: 20px;
}

.partner-info h3 {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 5px;
}

.partner-info p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 服务区域 */
.services-section {
    background: var(--background-gray);
    padding: 80px 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 36px;
    margin-bottom: 40px;
}

.service-item {
    text-align: center;
    padding: 30px;
    background: var(--background-light);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.service-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon img {
    width: 40px;
    height: 40px;
    filter: brightness(0) invert(1);
}

.service-icon svg {
    width: 40px;
    height: 40px;
    stroke: #fff;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.service-content h3 {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 15px;
    font-weight: 600;
}

.service-content p {
    color: var(--text-light);
    line-height: 1.6;
}

/* 行业洞察 */
.insights-section {
    padding: 80px 0;
    background: var(--background-light);
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.insight-card {
    background: var(--background-light);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.insight-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.insight-image {
    height: 200px;
    overflow: hidden;
}

.insight-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.insight-content {
    padding: 25px;
}

.insight-content h3 {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 15px;
    font-weight: 600;
    line-height: 1.4;
}

.insight-content p {
    color: var(--text-light);
    line-height: 1.6;
}

.faq-section { padding: 80px 0; background: var(--background-light); }
.faq-accordion { max-width: 900px; margin: 0 auto; display: grid; gap: 16px; }
.faq-item { background: var(--background-light); border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); overflow: hidden; }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 18px 24px; font-weight: 600; color: var(--text-dark); background: transparent; border: none; cursor: pointer; }
.faq-answer { max-height: 0; overflow: hidden; opacity: 0; transition: max-height 0.3s ease, opacity 0.3s ease, padding 0.3s ease; padding: 0 24px; color: var(--text-light); }
.faq-item.open .faq-answer { max-height: 800px; opacity: 1; padding: 0 24px 24px; }
.faq-question i { color: var(--secondary-color); }

/* 中心按钮 */
.center-btn {
    text-align: center;
    margin-top: 40px;
}

/* 页脚 */
.footer {
    background: #0e0f13;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    margin-bottom: 20px;
    color: #e6e6e6;
}

.footer-section p, .footer-section li {
    margin-bottom: 10px;
    opacity: 0.8;
}

.footer-section ul {
    list-style: none;
}

.footer-section a {
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #dcdcdc;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
}

/* 浮动功能按钮 */
.quick-contact { position: fixed; bottom: 24px; right: 24px; display: flex; flex-direction: column; gap: 12px; z-index: 1000; }
.quick-contact a { width: 52px; height: 52px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; background: var(--primary-color); box-shadow: 0 12px 30px rgba(26,54,93,0.3); transition: all 0.25s ease; }
.quick-contact a i { font-size: 20px; }
.quick-contact a:hover { transform: translateY(-2px); background: var(--secondary-color); box-shadow: 0 16px 36px rgba(45,90,160,0.35); }
.quick-contact .quick-whatsapp { background: #25D366; }
.quick-contact .quick-whatsapp:hover { background: #1ebe57; }

.back-to-top { position: fixed; bottom: 240px; right: 24px; width: 52px; height: 52px; border-radius: 50%; border: none; display: flex; align-items: center; justify-content: center; background: var(--accent-color); color: #fff; box-shadow: 0 12px 30px rgba(242,108,46,0.3); cursor: pointer; opacity: 0; visibility: hidden; transition: all 0.25s ease; z-index: 1100; }
.back-to-top i { font-size: 20px; }
.back-to-top.show { opacity: 1; visibility: visible; }

/* 响应式设计 */
@media (max-width: 768px) {
    .container{padding:20px;}
    .hero { height: 480px; }
    .hero-caption h1 { font-size: 2.2rem; }
    .hero-caption p { font-size: 1rem; }
    .top-bar { display: block; }
    .main-nav { position: sticky; top: var(--top-bar-height, 0px);margin-top: -88px; }
    .mobile-menu-btn { display: block; }
    .nav-actions { display: none; }
    .nav-menu { display: none;  }
    .main-nav.open .nav-menu {  position: absolute;top: 80px; left: 0; right: 0; background: #fff; padding: 12px 16px; box-shadow: 0 12px 24px rgba(0,0,0,0.12); border-top: 1px solid #eee; max-height: calc(100vh - 60px); overflow-y: auto; -webkit-overflow-scrolling: touch; }
    .main-nav .container { position: relative; z-index: auto; padding: 6px 12px; }
    .logo img { height: 42px; }
    .nav-menu li { width: 100%; border-bottom: 1px solid #eee; }
    .nav-menu a { display: block; padding: 14px 0; font-size: 18px; }
    .submenu-toggle { display: inline-block; }
    .sub-menu { position: static; box-shadow: none; border-radius: 0; display: none; padding: 0; }
    .has-children.open > .sub-menu { display: block; }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content p {
        font-size: 1.1rem;
    }
    
    .products-content,
    .quality-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .brand-categories {
        grid-template-columns: 1fr;
    }
    
    .brands-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-section {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .advantages-grid,
    .services-grid,
    .partners-grid,
    .insights-grid {
        grid-template-columns: 1fr;
    }
    
    .top-bar .container {
        flex-direction: row;
        gap: 10px;
    }
    .top-bar .top-bar-left .top-link:nth-child(n+3) { display: none; }
    .top-bar .top-bar-left { display: flex; align-items: center; gap: 12px; }
    
    .main-nav .container { gap: 12px; position: relative; z-index: 22000; }
}

@media (max-width: 480px) {
    .hero { height: 380px; }
    .hero-caption h1 { font-size: 1.8rem; }
    .hero-caption p { font-size: 0.95rem; }
    
    .title {
        font-size: 2rem;
    }
    
    .stats-section {
        grid-template-columns: 1fr;
    }
    
    .brands-grid {
        grid-template-columns: 1fr;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* 滚动效果 */
.scroll-down {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
}

.scroll-down img {
    width: 30px;
    height: 30px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
    .partners-track { gap: 14px; }
    .partners-track .partner-card { flex: 0 0 100%; }
    .carousel-prev { left: 4px; }
    .carousel-next { right: 4px; }
}
.faq-header { padding: 120px 0 60px; background: var(--gradient-secondary); position: relative; overflow: hidden; }
.faq-header::before { content: ''; position: absolute; inset: 0; background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M0 20h40M20 0v40" stroke="rgba(255,255,255,0.08)" stroke-width="1" fill="none"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>'); opacity: 0.3; }
.faq-header .page-header-content { position: relative; z-index: 2; text-align: center; color: #fff; }
.faq-header h1 { font-size: 3rem; font-weight: 700; margin-bottom: 10px; }
.faq-subtitle { color: #e6eef7; opacity: 0.9; }
.faq-header .breadcrumb { position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; color: #fff; opacity: 0.9; }
.faq-header .breadcrumb a { color: #fff; }
.industries-header { padding: 120px 0 60px; background: var(--gradient-primary); position: relative; overflow: hidden; }
.industries-header::before { content: ''; position: absolute; inset: 0; background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grid2" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M0 25h50M25 0v50" stroke="rgba(255,255,255,0.06)" stroke-width="1" fill="none"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid2)"/></svg>'); opacity: 0.25; }
.industries-header .page-header-content { position: relative; z-index: 2; text-align: center; color: #fff; }
.industries-section { padding: 80px 0; background: var(--background-light); }
.industries-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.industry-card { background: var(--background-light); border-radius: 15px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); padding: 24px; transition: all 0.3s ease; }
.industry-card:hover { transform: translateY(-4px); box-shadow: 0 18px 42px rgba(0,0,0,0.12); }
.industry-icon { width: 80px; height: 80px; margin: 0 auto 16px; background: var(--gradient-secondary); border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.industry-icon svg { width: 40px; height: 40px; stroke: #fff; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.industry-content h3 { text-align: center; margin-bottom: 10px; color: var(--text-dark); }
.industry-content p { text-align: center; color: var(--text-light); margin-bottom: 12px; }
.industry-content ul { list-style: none; padding: 0; display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.industry-content ul li { background: var(--background-gray); border-radius: 20px; padding: 6px 12px; font-size: 0.9rem; color: var(--text-dark); }
.news-header { padding: 120px 0 60px; background: var(--gradient-secondary); position: relative; overflow: hidden; }
.news-header::before { content: ''; position: absolute; inset: 0; background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grid3" width="48" height="48" patternUnits="userSpaceOnUse"><path d="M0 24h48M24 0v48" stroke="rgba(255,255,255,0.06)" stroke-width="1" fill="none"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid3)"/></svg>'); opacity: 0.25; }
.news-header .page-header-content { position: relative; z-index: 2; text-align: center; color: #fff; }
.news-section { padding: 80px 0; background: var(--background-light); }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.news-card { background: var(--background-light); border-radius: 15px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); overflow: hidden; transition: all 0.3s ease; display: flex; flex-direction: column; }
.news-card:hover { transform: translateY(-4px); box-shadow: 0 18px 42px rgba(0,0,0,0.12); }
.news-image { display: block; position: relative; height: 200px; overflow: hidden; }
.news-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.news-card:hover .news-image img { transform: scale(1.06); }
.news-date { position: absolute; bottom: 10px; left: 10px; background: rgba(77,77,77,0.85); color: #fff; padding: 6px 10px; border-radius: 14px; font-size: 12px; }
.news-content { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.news-content h3 { font-size: 1.2rem; margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-content h3 a { color: var(--text-dark); text-decoration: none; }
.news-excerpt { color: var(--text-light); margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.news-meta { display: flex; justify-content: space-between; align-items: center; margin-top: auto; }
.news-header .breadcrumb { position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; color: #fff; opacity: 0.9; }
.news-header .breadcrumb a { color: #fff; }
.btn-read { background: var(--gradient-secondary); border-radius: 20px; padding: 8px 14px; }
.news-pagination { display: flex; justify-content: center; gap: 10px; margin-top: 30px; }
.news-pagination .page-link { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; background: var(--background-gray); color: var(--text-dark); text-decoration: none; }
.article-header { padding: 120px 0 60px; background: var(--gradient-primary); position: relative; overflow: hidden; }
.article-header::before { content: ''; position: absolute; inset: 0; background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grid4" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M0 25h50M25 0v50" stroke="rgba(255,255,255,0.06)" stroke-width="1" fill="none"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid4)"/></svg>'); opacity: 0.25; }
.article-header .page-header-content { position: relative; z-index: 2; text-align: center; color: #fff; }
.article-subtitle { color: #e6eef7; }
.article-header .breadcrumb { position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; color: #fff; opacity: 0.9; }
.article-header .breadcrumb a { color: #fff; }
.article-section { padding: 60px 0; background: var(--background-light); }
.article-wrap { max-width: 900px; margin: 0 auto; }
.article-cover img { width: 100%; border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); margin-bottom: 20px; }
.article-content { color: var(--text-dark); line-height: 1.8; }
.article-share { display: flex; align-items: center; gap: 10px; margin-top: 20px; }
.article-share a { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; background: var(--background-gray); color: var(--text-dark); text-decoration: none; }
.article-nav { display: flex; justify-content: space-between; gap: 20px; margin-top: 20px; }
.article-nav .nav-icon { width: 64px; height: 64px; border-radius: 50%; background: var(--primary-color); color: #fff; display: flex; align-items: center; justify-content: center; box-shadow: 0 12px 30px rgba(26,54,93,0.3); text-decoration: none; transition: transform 0.2s ease, box-shadow 0.2s ease; }
.article-nav .nav-icon i { font-size: 26px; }
.article-nav .nav-icon:hover { transform: translateY(-2px); box-shadow: 0 16px 36px rgba(26,54,93,0.35); background: var(--secondary-color); }

/* Cookie Banner */
.cookie-banner { position: fixed; left: 20px; right: 20px; bottom: 20px; background: var(--background-light); border: 1px solid var(--border-color); border-radius: 16px; box-shadow: 0 18px 48px rgba(0,0,0,0.18); padding: 18px 20px; display: none; z-index: 10000; align-items: center; gap: 18px; animation: cookieSlideIn 0.25s ease; }
.cookie-banner.open { display: flex; }
.cookie-icon { width: 44px; height: 44px; border-radius: 50%; background: var(--gradient-secondary); display: flex; align-items: center; justify-content: center; color: #fff; box-shadow: 0 8px 20px rgba(0,0,0,0.12); }
.cookie-icon i { font-size: 20px; }
.cookie-content { flex: 1; }
.cookie-title { font-weight: 700; color: var(--text-dark); margin-bottom: 6px; }
.cookie-text { color: var(--text-light); }
.cookie-actions { display: flex; gap: 12px; align-items: center; }
.cookie-actions .btn { white-space: nowrap; }
.cookie-decline { background: var(--background-gray); color: var(--text-dark); border: 2px solid var(--border-color); }
.cookie-learn { display: inline-flex; align-items: center; gap: 6px; color: var(--secondary-color); text-decoration: none; }
.cookie-learn i { font-size: 16px; }
@keyframes cookieSlideIn { from { transform: translateY(8px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@media (max-width: 768px) { .cookie-banner { flex-direction: column; align-items: flex-start; } .cookie-actions { width: 100%; justify-content: flex-end; } }
.contact-header { padding: 120px 0 60px; background: var(--gradient-primary); position: relative; overflow: hidden; }
.contact-header::before { content: ''; position: absolute; inset: 0; background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grid5" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M0 25h50M25 0v50" stroke="rgba(255,255,255,0.06)" stroke-width="1" fill="none"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid5)"/></svg>'); opacity: 0.25; }
.contact-header .page-header-content { position: relative; z-index: 2; text-align: center; color: #fff; }
.contact-subtitle { color: #e6eef7; }
.contact-header .breadcrumb { position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; color: #fff; opacity: 0.9; }
.contact-header .breadcrumb a { color: #fff; }

.contact-section { padding: 80px 0; background: var(--background-light); }
.contact-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: start; }
.contact-card { background: var(--background-light); border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); padding: 20px; margin-bottom: 16px; }
.contact-card h3 { margin-bottom: 10px; color: var(--text-dark); }
.contact-card p { color: var(--text-light); margin-bottom: 8px; }
.contact-card i { color: var(--secondary-color); margin-right: 8px; }
.contact-highlights { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; }
.highlight-item { background: var(--background-gray); border-radius: 20px; padding: 8px 12px; color: var(--text-dark); font-size: 0.9rem; display: inline-flex; align-items: center; gap: 8px; }

.contact-form-wrap { background: var(--background-light); border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); padding: 24px; }
.contact-form .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.contact-form .form-field { display: flex; flex-direction: column; }
.contact-form label { font-size: 0.9rem; margin-bottom: 6px; color: var(--text-dark); }
.contact-form input, .contact-form textarea { border: 2px solid var(--border-color); border-radius: 10px; padding: 12px 14px; font-size: 0.95rem; transition: all 0.2s ease; font-family: inherit; color: var(--text-dark); }
.contact-form textarea { line-height: 1.6; }
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--accent-color); box-shadow: 0 0 0 3px rgba(74,144,226,0.1); }
.contact-form .form-actions { margin-top: 10px; }

@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
  .contact-form .form-row { grid-template-columns: 1fr; }
}
.policy-section { padding: 80px 0; background: var(--background-light); }
.policy-wrap { max-width: 900px; margin: 0 auto; }
.policy-block { background: var(--background-light); border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); padding: 22px; margin-bottom: 16px; }
.policy-block h2 { font-size: 1.4rem; margin-bottom: 10px; color: var(--text-dark); }
.policy-block p { color: var(--text-light); line-height: 1.7; }
.policy-list { list-style: none; padding: 0; }
.policy-list li { background: var(--background-gray); border-radius: 10px; padding: 8px 12px; margin-bottom: 8px; color: var(--text-dark); }
.home-products { max-width: 1200px; margin: 0 auto; }
.home-products-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.home-product-card { background: #fff; border-radius: 14px; box-shadow: 0 10px 24px rgba(0,0,0,0.08); overflow: hidden; display: flex; flex-direction: column; transition: all 0.25s ease; }
.home-product-card:hover { transform: translateY(-4px); box-shadow: 0 16px 36px rgba(0,0,0,0.12); }
.hp-image { height: 220px; background: #ffffff; display: flex; align-items: center; justify-content: center; overflow: hidden; position: relative; }
.hp-image img { width: 100%; height: 100%; object-fit: contain; }
.hp-image::after { content: ""; position: absolute; left: 0; top: 0; right: 0; bottom: 0; background: url('../images/logo.svg') no-repeat center; background-size: 200px auto; opacity: 0; transition: opacity 0.25s ease; pointer-events: none; }
.home-product-card:hover .hp-image::after { opacity: 0.22; }
.hp-body { padding: 16px 16px 18px; }
.hp-title { font-size: 1rem; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; line-height: 1.4; }
.hp-desc { font-size: 0.9rem; color: var(--text-light); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 42px; }

@media (max-width: 1200px) { .home-products-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 992px) { .home-products-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .home-products-grid { grid-template-columns: 1fr; } .hp-image { height: 190px; } }

/* History Page */
.history-header { padding: 120px 0 60px; background: var(--gradient-primary); position: relative; overflow: hidden; }
.history-header::before { content: ''; position: absolute; inset: 0; background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grid6" width="54" height="54" patternUnits="userSpaceOnUse"><path d="M0 27h54M27 0v54" stroke="rgba(255,255,255,0.06)" stroke-width="1" fill="none"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid6)"/></svg>'); opacity: 0.25; }
.history-header .page-header-content { position: relative; z-index: 2; text-align: center; color: #fff; }
.history-subtitle { color: #e6eef7; }
.history-header .breadcrumb { position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; color: #fff; opacity: 0.9; }
.history-header .breadcrumb a { color: #fff; }


.history-section { padding: 80px 0; background: var(--background-light); }
.timeline { position: relative; display: grid; grid-template-columns: repeat(6, 1fr); gap: 22px; padding: 64px 0; align-items: center; }
.timeline::before { content: ''; position: absolute; left: 0; right: 0; top: 50%; height: 2px; background: var(--border-color); }
.timeline-item { position: relative; min-height: 260px; }
.timeline-dot { position: absolute; left: 50%; top: calc(50% - 6px); width: 12px; height: 12px; border-radius: 50%; background: var(--primary-color-dark); transform: translateX(-50%); box-shadow: 0 6px 16px rgba(0,0,0,0.18); border: 2px solid #fff; }
.timeline-item.top .timeline-dot::after { content: ''; position: absolute; left: 50%; top: -26px; width: 2px; height: 26px; background: var(--border-color); transform: translateX(-50%); }
.timeline-item.bottom .timeline-dot::after { content: ''; position: absolute; left: 50%; bottom: -26px; width: 2px; height: 26px; background: var(--border-color); transform: translateX(-50%); }
.timeline-content { position: absolute; left: 50%; transform: translateX(-50%); width: 260px; text-align: center; z-index: 2; }
.timeline-item.top .timeline-content { top: 18px; }
.timeline-item.bottom .timeline-content { bottom: 18px; }
.timeline-year { font-weight: 700; color: var(--primary-color-dark); margin-bottom: 6px; }
.timeline-text { color: var(--text-dark); line-height: 1.7; font-size: 0.95rem; }

@media (max-width: 992px) {
  .timeline { grid-template-columns: repeat(3, 1fr); row-gap: 36px; }
}

@media (max-width: 640px) {
  .timeline { grid-template-columns: 1fr; }
  .timeline::before { display: none; }
  .timeline-item { min-height: auto; }
  .timeline-dot { display: none; }
  .timeline-content { position: static; transform: none; width: 100%; }
}
.certs-section { padding: 80px 0; background: var(--background-light); }
.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cert-card { background: var(--background-light); border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); padding: 18px 22px; display: grid; grid-template-columns: 64px 1fr auto; align-items: center; gap: 16px; }
.cert-icon { width: 56px; aspect-ratio: 1/1; border-radius: 50%; background: var(--gradient-secondary); color: #fff; display: grid; place-items: center; font-weight: 700; box-shadow: 0 12px 26px rgba(0,0,0,0.12); letter-spacing: 1px; }
.cert-title { font-weight: 700; color: var(--text-dark); }
.cert-desc { color: var(--text-light); }
.cert-meta { background: var(--background-gray); color: var(--text-dark); border-radius: 16px; padding: 6px 10px; font-size: 0.85rem; }
@media (max-width: 992px) { .cert-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .cert-grid { grid-template-columns: 1fr; } }

.honors-section { padding: 80px 0; background: var(--background-light); }
.v-timeline { position: relative; max-width: 900px; margin: 0 auto; padding-left: 50px; }
.v-timeline::before { content: ''; position: absolute; left: 22px; top: 0; bottom: 0; width: 2px; background: var(--border-color); }
.v-item { position: relative; display: grid; grid-template-columns: 140px 1fr; gap: 18px; padding: 14px 0; }
.v-year { font-weight: 700; color: var(--primary-color-dark); text-align: right; padding-right: 8px; }
.v-content { color: var(--text-dark); line-height: 1.75; }
.v-item::after { content: ''; position: absolute; left: 16px; top: 22px; width: 12px; height: 12px; border-radius: 50%; background: var(--primary-color-dark); border: 2px solid #fff; box-shadow: 0 6px 16px rgba(0,0,0,0.18); }
.vision-section { padding: 80px 0; background: var(--background-light); }
.vision-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.vision-card { background: var(--background-light); border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); padding: 22px; }
.vision-card h3 { margin-bottom: 10px; color: var(--text-dark); }
.vision-card p { color: var(--text-light); }
@media (max-width: 992px) { .vision-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .vision-grid { grid-template-columns: 1fr; } }

.values-section { padding: 70px 0; background: var(--background-light); }
.values-grid { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.value-badge { background: var(--background-gray); border-radius: 22px; padding: 10px 16px; color: var(--text-dark); font-weight: 600; }

.pillars-section { padding: 80px 0; background: var(--background-light); }
.pillars-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.pillar-card { background: var(--background-light); border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); padding: 22px; }
.pillar-card h3 { margin-bottom: 10px; color: var(--text-dark); }
.pillar-card p { color: var(--text-light); }
@media (max-width: 992px) { .pillars-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .pillars-grid { grid-template-columns: 1fr; } }

.goals-section { padding: 80px 0; background: var(--background-light); }
.goals-list { max-width: 800px; margin: 0 auto; list-style: none; padding: 0; display: grid; gap: 10px; }
.goals-list li { background: var(--background-light); border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); padding: 14px 16px; color: var(--text-dark); }
.productlist-section { padding: 80px 0; background: var(--background-light); }
.product-layout { display: grid; grid-template-columns: 280px 1fr; gap: 24px; }
.category-sidebar { background: var(--background-light); border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); padding: 16px; }
.cat-header { font-weight: 700; color: var(--text-dark); margin-bottom: 10px; }
.cat-menu { list-style: none; padding: 0; margin: 0; }
.cat-item { border: 1px solid var(--border-color); border-radius: 10px; margin-bottom: 10px; overflow: hidden; background: #fff; }
.cat-link { display: block; padding: 12px 14px; color: var(--text-dark); text-decoration: none; }
.cat-link.active { color: var(--primary-color-dark); font-weight: 700; }
.cat-row { display: flex; align-items: center; justify-content: space-between; }
.category-sidebar .cat-row { position: relative; }
.category-sidebar .submenu-toggle { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); width: 24px; height: 24px; background: var(--background-gray); border: 1px solid var(--border-color); border-radius: 50%; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; }
.category-sidebar .toggle-icon { font-weight: 700; color: var(--text-dark); line-height: 1; font-size: 14px; }
.category-sidebar .submenu-toggle::before { content: none !important; }
.sub-list { list-style: none !important; padding: 0; margin: 0; max-height: 0; overflow: hidden; transition: max-height 0.25s ease; }
.sub-list .sub-item { list-style: none; }
.has-children.open .sub-list { max-height: 500px; }
.sub-item a { display: block; padding: 10px 14px 10px 22px; border-top: 1px dashed var(--border-color); color: var(--text-dark); }
.sub-item.active a { color: var(--primary-color-dark); font-weight: 700; }

.product-content { }
.product-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.pl-card { background: #fff; border-radius: 12px; box-shadow: 0 10px 24px rgba(0,0,0,0.08); overflow: hidden; text-decoration: none; color: inherit; display: flex; flex-direction: column; }
.pl-image { height: 200px; display: flex; align-items: center; justify-content: center; background: #fff; }
.pl-image img { width: 100%; height: 100%; object-fit: contain; }
.pl-image { position: relative; overflow: hidden; }
.pl-image::after { content: ""; position: absolute; left: 0; top: 0; right: 0; bottom: 0; background: url('../images/logo.svg') no-repeat center; background-size: 200px auto; opacity: 0; transition: opacity 0.25s ease; pointer-events: none; }
.pl-card:hover .pl-image::after { opacity: 0.22; }
.pl-card:hover .pl-image img { transform: scale(1.06); transition: transform 0.25s ease; }
.pl-body { padding: 16px; }
.pl-title { font-size: 1rem; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; }
.pl-desc { font-size: 0.9rem; color: var(--text-light); min-height: 40px; }
.pl-pagination { display: flex; align-items: center; justify-content: center; gap: 8px; margin-top: 28px; }
.pl-pagination a, .pl-pagination span { display: inline-flex; align-items: center; justify-content: center; min-width: 36px; height: 36px; padding: 0 12px; border-radius: 999px; background: var(--background-gray); border: 1px solid var(--border-color); color: var(--text-dark); text-decoration: none; box-shadow: 0 6px 14px rgba(0,0,0,0.06); }
.pl-pagination a:hover { background: #fff; border-color: var(--primary-color); color: var(--primary-color); }
.pl-pagination span.current { background: var(--gradient-secondary); color: #fff; border-color: transparent; }
.pl-pagination .page-link { display: inline-flex; align-items: center; justify-content: center; }
.no-data { text-align: center; color: var(--text-light); margin-top: 14px; }

@media (max-width: 992px) { .product-layout { grid-template-columns: 1fr; } .product-cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .product-cards { grid-template-columns: 1fr; } }
.tyre-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.tyre-card { background: #fff; border-radius: 14px; box-shadow: 0 10px 24px rgba(0,0,0,0.08); overflow: hidden; text-decoration: none; color: inherit; display: flex; flex-direction: column; transition: all 0.25s ease; }
.tyre-card:hover { transform: translateY(-4px); box-shadow: 0 16px 36px rgba(0,0,0,0.12); }
.tyre-image { height: 220px; background: #ffffff; display: flex; align-items: center; justify-content: center; overflow: hidden; position: relative; }
.tyre-image img { width: 100%; height: 100%; object-fit: contain; transition: transform 0.25s ease; }
.tyre-card:hover .tyre-image img { transform: scale(1.06); }
.tyre-image::after { content: ""; position: absolute; left: 0; top: 0; right: 0; bottom: 0; background: url('../images/logo.svg') no-repeat center; background-size: 200px auto; opacity: 0; transition: opacity 0.25s ease; pointer-events: none; }
.tyre-card:hover .tyre-image::after { opacity: 0.22; }
.tyre-info { padding: 16px 16px 18px; }
.tyre-model { font-size: 1rem; font-weight: 700; color: var(--text-dark); }
@media (max-width: 1200px) { .tyre-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 992px) { .tyre-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .tyre-grid { grid-template-columns: 1fr; } .tyre-image { height: 190px; } }
.detail-wrap { display: grid; grid-template-columns: 1.1fr 1fr; gap: 24px; }
.detail-media { background: #fff; border-radius: 12px; box-shadow: 0 10px 24px rgba(0,0,0,0.08); padding: 20px; display: flex; align-items: center; justify-content: center; }
.detail-media img { width: 100%; height: 100%; object-fit: contain; }
.detail-media { position: relative; overflow: hidden; }
.detail-media::after { content: ""; position: absolute; left: 0; top: 0; right: 0; bottom: 0; background: url('../images/logo.svg') no-repeat center; background-size: 220px auto; opacity: 0.18; pointer-events: none; }
.detail-info { background: #fff; border-radius: 12px; box-shadow: 0 10px 24px rgba(0,0,0,0.08); padding: 20px; }
.detail-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.detail-model { font-size: 1.1rem; font-weight: 700; color: var(--text-dark); }
.detail-badges { display: flex; gap: 8px; flex-wrap: wrap; }
.badge-chip { background: var(--background-gray); color: var(--text-dark); border-radius: 18px; padding: 6px 10px; font-size: 0.85rem; }
.feature-list { display: grid; gap: 8px; margin: 12px 0; }
.feature-item { color: var(--text-dark); position: relative; padding-left: 18px; }
.feature-item::before { content: ''; position: absolute; left: 0; top: 8px; width: 8px; height: 8px; border-radius: 2px; border-right: 2px solid var(--primary-color); border-bottom: 2px solid var(--primary-color); transform: rotate(45deg); }
.spec-table { display: grid; grid-template-columns: 160px 1fr; border: 1px solid var(--border-color); border-radius: 10px; overflow: hidden; }
.spec-row { display: contents; }
.spec-key { padding: 10px 12px; background: var(--background-gray); color: var(--text-dark); border-bottom: 1px solid var(--border-color); }
.spec-val { padding: 10px 12px; color: var(--text-dark); border-bottom: 1px solid var(--border-color); }
.spec-table .spec-key:nth-last-child(2), .spec-table .spec-val:last-child { border-bottom: none; }
.cta-box { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }
.btn-secondary { background: transparent; color: var(--primary-color); border: 2px solid var(--primary-color); }
.btn-secondary:hover { background: var(--primary-color); color: #fff; border-color: var(--primary-color); box-shadow: 0 10px 25px rgba(242,108,46,0.25); }
.cta-box .btn-secondary { background: transparent; color: var(--primary-color); border: 2px solid var(--primary-color); }
.trade-notes { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 12px; }
.note-card { background: var(--background-gray); color: var(--text-dark); border-radius: 12px; padding: 8px 12px; }
@media (max-width: 992px) { .detail-wrap { grid-template-columns: 1fr; } }
.contact-channels { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }
.channel { padding: 10px 16px; }
.channel.whatsapp { border-color: #25D366; color: #25D366; }
.channel.whatsapp:hover { background: #25D366; color: #fff; }
.channel.wechat { border-color: #07C160; color: #07C160; }
.channel.wechat:hover { background: #07C160; color: #fff; }
.qr-modal { position: fixed; inset: 0; display: none; }
.qr-modal.open { display: block; }
.qr-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.4); }
.qr-dialog { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); background: #fff; border-radius: 12px; box-shadow: 0 20px 40px rgba(0,0,0,0.2); width: 360px; padding: 16px; }
.qr-title { font-size: 1rem; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; }
.qr-image { display: flex; align-items: center; justify-content: center; }
.qr-image img { width: 280px; height: 280px; object-fit: contain; }
.qr-close { position: absolute; right: 10px; top: 8px; width: 28px; height: 28px; border: none; background: transparent; font-size: 22px; cursor: pointer; }
.top-bar .lang-switch { position: relative; }
.top-bar .lang-btn { display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px; border-radius: 20px; background: #fff; color: var(--text-dark); border: 1px solid var(--border-color); cursor: pointer; }
.top-bar .lang-btn:hover { border-color: var(--primary-color); color: var(--primary-color); }
.top-bar .lang-caret { width: 8px; height: 8px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(45deg); }
.top-bar .lang-menu { position: absolute; right: 0; top: calc(100% + 8px); background: #fff; border: 1px solid var(--border-color); border-radius: 12px; box-shadow: 0 12px 24px rgba(0,0,0,0.12); padding: 6px; min-width: 180px; display: none; z-index: 2001; list-style: none; }
.top-bar .lang-menu.open { display: block; }
.top-bar .lang-menu a { display: block; padding: 8px 10px 8px 22px; border-radius: 8px; color: var(--text-dark); position: relative; }
.top-bar .lang-menu a::before { content: ''; position: absolute; left: 8px; top: 50%; transform: translateY(-50%); width: 6px; height: 6px; border-radius: 50%; background: var(--primary-color); }
.top-bar .lang-menu a:hover { background: var(--background-gray); color: var(--primary-color); }