/* ==========================================
   海德农牧科技 - 多语言官网主样式表
   主色调: 天蓝 #0284c7, 点缀色: 暖橙 #f4811f
   ========================================== */

/* --- CSS Variables --- */
:root {
    --primary: #0284c7;
    --primary-light: #0369a1;
    --primary-lighter: #0ea5e9;
    --primary-dark: #075985;
    --accent: #f4811f;
    --accent-hover: #e07314;
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --text: #1e293b;
    --text-light: #64748b;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
    --radius: 8px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
    --max-width: 1200px;
    --header-height: 70px;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text);
    background: var(--white);
    line-height: 1.7;
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-hover); }
ul { list-style: none; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 50px;
    position: relative;
    padding-bottom: 16px;
}
.section-title::after {
    content: '';
    position: absolute;
    bottom: 0; left: 50%;
    transform: translateX(-50%);
    width: 60px; height: 3px;
    background: var(--accent);
    border-radius: 2px;
}

/* --- Button --- */
.btn {
    display: inline-block;
    padding: 14px 36px;
    border: none; border-radius: var(--radius);
    font-size: 1rem; font-weight: 600;
    cursor: pointer; text-align: center;
    transition: var(--transition);
}
.btn-cta {
    background: var(--accent); color: var(--white);
}
.btn-cta:hover { background: var(--accent-hover); color: var(--white); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-submit {
    background: var(--primary); color: var(--white);
    width: 100%; max-width: 400px; margin-top: 10px;
}
.btn-submit:hover { background: var(--primary-light); }

/* ========================================
   HEADER - 透明悬浮叠加轮播
   ======================================== */
.site-header {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 1000;
    height: var(--header-height);
    background: transparent;
    box-shadow: none;
    border-bottom: 1px solid transparent;
    transition: all 0.35s ease;
}
.site-header.scrolled {
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(2, 132, 199, 0.12);
    border-bottom: 1px solid var(--gray-200);
}
/* 非首页始终白底 */
body:not(.page-home) .site-header {
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(2, 132, 199, 0.1);
    border-bottom: 1px solid var(--gray-200);
}
.header-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 100%;
}

/* Logo */
.logo {
    display: flex; align-items: center; gap: 10px; flex-shrink: 0;
}
.logo:hover { opacity: 0.85; }
.logo-img { height: 44px; width: auto; display: block; }
.logo-text { font-size: 1.15rem; font-weight: 700; color: var(--primary); }

/* Nav: 透明模式下白色文字 */
body.page-home .site-header:not(.scrolled) .nav-item a { color: rgba(255,255,255,0.9); }
body.page-home .site-header:not(.scrolled) .nav-item a:hover,
body.page-home .site-header:not(.scrolled) .nav-item.active a {
    background: rgba(255,255,255,0.2); color: var(--white);
}
body.page-home .site-header:not(.scrolled) .logo-text { color: var(--white); }
body.page-home .site-header:not(.scrolled) .mobile-menu-toggle span { background: var(--white); }
body.page-home .site-header:not(.scrolled) .lang-current {
    background: rgba(255,255,255,0.15); color: var(--white); border-color: rgba(255,255,255,0.3);
}

/* Navigation base */
.main-nav .nav-list {
    display: flex; gap: 4px;
}
.nav-item a {
    display: block; padding: 8px 18px; color: var(--text);
    border-radius: var(--radius); font-size: 0.95rem; font-weight: 500;
}
.nav-item a:hover, body:not(.page-home) .nav-item.active a,
.scrolled .nav-item.active a { color: var(--white); background: var(--primary); }
/* Scrolled状态下 */
.scrolled .nav-item a { color: var(--text); }
.scrolled .nav-item a:hover { color: var(--white); background: var(--primary); }

/* Language Switcher */
.lang-switcher {
    position: relative; flex-shrink: 0;
}
.lang-current {
    display: flex; align-items: center; gap: 6px;
    background: var(--gray-50); color: var(--text);
    border: 1px solid var(--gray-200); border-radius: var(--radius);
    padding: 8px 14px; cursor: pointer; font-size: 0.85rem;
}
.lang-current:hover { background: var(--gray-100); border-color: var(--primary); }
.lang-name { font-weight: 500; }
.lang-arrow { font-size: 0.7rem; transition: transform 0.3s; }
.lang-switcher.open .lang-arrow { transform: rotate(180deg); }
.lang-dropdown {
    position: absolute; top: 100%; right: 0;
    background: var(--white); border-radius: var(--radius);
    box-shadow: var(--shadow-lg); min-width: 160px;
    opacity: 0; visibility: hidden; transform: translateY(8px);
    transition: var(--transition); z-index: 1001;
    overflow: hidden;
}
.lang-switcher.open .lang-dropdown { opacity: 1; visibility: visible; transform: translateY(4px); }
.lang-dropdown li a {
    display: block; padding: 10px 16px; color: var(--text);
    font-size: 0.9rem; border-bottom: 1px solid var(--gray-100);
}
.lang-dropdown li:last-child a { border-bottom: none; }
.lang-dropdown li a:hover { background: var(--gray-50); color: var(--accent); }
.lang-dropdown li.active a { background: var(--primary); color: var(--white); }

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 8px;
}
.mobile-menu-toggle span {
    display: block; width: 24px; height: 2px;
    background: var(--primary); border-radius: 2px; transition: var(--transition);
}
.mobile-menu-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-toggle.open span:nth-child(2) { opacity: 0; }
.mobile-menu-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ========================================
   CAROUSEL - 全屏轮播 国瑞能风格
   ======================================== */
.carousel-section {
    position: relative; width: 100%; height: 100vh;
    overflow: hidden;
}
.carousel-slider { position: relative; width: 100%; height: 100%; }
.carousel-item {
    position: absolute; inset: 0;
    opacity: 0; transition: opacity 1s ease;
    z-index: 1;
}
.carousel-item.active { opacity: 1; z-index: 2; }
.carousel-bg {
    position: absolute; inset: 0;
    background-size: cover; background-position: center; background-repeat: no-repeat;
}
/* 渐变蒙版：从左到右，左侧保留亮度，右侧加深保障白色文字可读 */
.carousel-mask {
    position: absolute; inset: 0;
    background: linear-gradient(to right, rgba(0,0,0,0.1) 30%, rgba(0,0,0,0.5) 70%);
    z-index: 3; pointer-events: none;
}

/* 右侧文字容器 */
.carousel-content.right-layout {
    position: absolute;
    z-index: 4;
    right: 8%; top: 50%;
    transform: translateY(-50%);
    max-width: 540px;
    color: var(--white);
    text-align: left;
}
.carousel-title {
    font-size: 3rem; font-weight: 800; line-height: 1.2;
    margin-bottom: 16px; text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
.carousel-subtitle {
    font-size: 1.15rem; color: rgba(255,255,255,0.88);
    margin-bottom: 36px; line-height: 1.6;
}

/* 卖点图标矩阵 */
.carousel-points {
    display: flex; gap: 20px; margin-bottom: 36px;
    flex-wrap: wrap;
}
.point-item { text-align: center; }
.point-icon {
    width: 56px; height: 56px; border: 2px solid rgba(255,255,255,0.7);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 8px; font-size: 1.2rem;
    transition: var(--transition);
}
.point-icon span { color: var(--white); font-weight: 700; }
.point-text { font-size: 0.8rem; color: rgba(255,255,255,0.9); font-weight: 500; }

/* 轻量按钮 */
.carousel-btn {
    display: inline-block; padding: 13px 36px;
    border: 1.5px solid rgba(255,255,255,0.8); color: var(--white);
    background: transparent;
    border-radius: 4px; font-size: 1rem; font-weight: 600;
    text-decoration: none; transition: var(--transition);
}
.carousel-btn:hover { background: var(--accent); border-color: var(--accent); color: var(--white); }

/* 右侧竖排指示器（国瑞能同款） */
.carousel-dots-vertical {
    position: absolute; right: 28px; top: 50%;
    transform: translateY(-50%); z-index: 10;
    display: flex; flex-direction: column; gap: 14px;
}
.carousel-dots-vertical .vdot {
    width: 10px; height: 10px;
    border: 1.5px solid rgba(255,255,255,0.6);
    border-radius: 50%; cursor: pointer;
    transition: var(--transition);
}
.carousel-dots-vertical .vdot.active { background: var(--white); border-color: var(--white); }
.carousel-dots-vertical .vdot:hover { background: rgba(255,255,255,0.5); }

/* 旧轮播样式移除（保留空白占位兼容） */
.hero-banner, .banner-slider, .banner-slide, .banner-bg,
.banner-overlay, .banner-content, .banner-title, .banner-btn,
.banner-prev, .banner-next, .banner-dots { display: none; }

/* ========================================
   ADVANTAGES
   ======================================== */
.advantages-section { padding: 80px 0; background: var(--gray-50); }
.advantages-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.advantage-card {
    background: var(--white); border-radius: var(--radius-lg);
    padding: 36px 24px; text-align: center;
    box-shadow: var(--shadow); transition: var(--transition);
}
.advantage-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.advantage-icon { font-size: 3rem; margin-bottom: 16px; }
.advantage-title { font-size: 1.15rem; font-weight: 700; color: var(--primary); margin-bottom: 12px; }
.advantage-desc { font-size: 0.9rem; color: var(--text-light); line-height: 1.7; }

/* ========================================
   CERTIFICATIONS - 科技感玻璃卡片
   ======================================== */
.certifications-section { padding: 80px 0; background: linear-gradient(135deg, #f0f9ff, #e0f2fe, #f0f9ff); }
.cert-grid { display: flex; justify-content: center; gap: 32px; flex-wrap: wrap; }
.cert-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: 28px 20px; text-align: center;
    border: 1px solid rgba(2, 132, 199, 0.15);
    box-shadow: 0 4px 20px rgba(2, 132, 199, 0.06);
    cursor: pointer;
    transition: var(--transition); position: relative; overflow: hidden;
    width: 260px; max-width: 100%;
}
.cert-card::before {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(2,132,199,0.05), transparent);
    opacity: 0; transition: opacity 0.4s ease;
}
.cert-card:hover { transform: translateY(-6px); box-shadow: 0 12px 32px rgba(2, 132, 199, 0.15); border-color: var(--primary-light); }
.cert-card:hover::before { opacity: 1; }
.cert-image { position: relative; overflow: hidden; border-radius: var(--radius); margin-bottom: 16px; }
.cert-image img { width: 100%; height: 200px; object-fit: cover; border-radius: var(--radius); transition: transform 0.5s ease; }
.cert-card:hover .cert-image img { transform: scale(1.03); }
.cert-name { font-size: 0.85rem; color: var(--primary-dark); font-weight: 600; }
.cert-zoom-hint { position: absolute; top: 16px; right: 16px; font-size: 1.1rem; opacity: 0; transition: var(--transition); color: var(--primary); }
.cert-card:hover .cert-zoom-hint { opacity: 1; }

/* ========================================
   PRODUCTS PREVIEW
   ======================================== */
.products-preview-section { padding: 80px 0; background: var(--gray-50); }
.products-preview-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.product-preview-card {
    background: var(--white); border-radius: var(--radius-lg);
    overflow: hidden; box-shadow: var(--shadow);
    transition: var(--transition); text-align: center;
}
.product-preview-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.product-preview-img { overflow: hidden; }
.product-preview-img img { width: 100%; height: 200px; object-fit: cover; transition: transform 0.5s ease; }
.product-preview-card:hover .product-preview-img img { transform: scale(1.05); }
.product-preview-name { font-size: 0.9rem; font-weight: 600; color: var(--primary); padding: 16px 12px; }

/* ========================================
   STATS
   ======================================== */
.stats-section { padding: 80px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-bottom: 48px; }
.stat-card {
    text-align: center; padding: 36px 20px;
    border: 2px solid var(--gray-200); border-radius: var(--radius-lg);
    transition: var(--transition);
}
.stat-card:hover { border-color: var(--primary); }
.stat-value { margin-bottom: 8px; }
.stat-number { font-size: 2.2rem; font-weight: 800; color: var(--accent); }
.stat-unit { font-size: 1rem; font-weight: 600; color: var(--primary); margin-left: 4px; }
.stat-label { font-size: 1rem; color: var(--primary-dark); font-weight: 600; margin-bottom: 10px; }
.stat-desc { font-size: 0.85rem; color: var(--text-light); line-height: 1.6; margin: 0; }

/* ========================================
   CTA SECTION
   ======================================== */
.cta-section {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    padding: 60px 0; text-align: center;
}
.cta-title { color: var(--white); font-size: 1.4rem; font-weight: 600; margin-bottom: 24px; }

/* ========================================
   PAGE HERO
   ======================================== */
.page-hero {
    margin-top: var(--header-height);
    padding: 80px 0 50px;
    text-align: center; position: relative; overflow: hidden;
}
.about-hero {
    min-height: 420px; display: flex; align-items: center; justify-content: center;
    padding: 0;
}
.about-hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(2,132,199,0.75), rgba(7,89,133,0.7));
    z-index: 1;
}
.page-hero-title { color: var(--white); font-size: 2.4rem; font-weight: 700; }
/* 产品/联系页Hero保留渐变背景 */
.page-hero.products-hero,
.page-hero.contact-hero { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); }

/* 联系页 Hero 背景图（仅联系页） */
.contact-hero {
    background-size: cover; background-position: center;
    height: 60vh; min-height: 400px;
    padding: 0;
    display: flex; align-items: center; justify-content: center;
}

/* ========================================
   PRODUCTS PAGE - 优化版
   ======================================== */

/* --- 1. 顶部 Banner（2组主推轮播） --- */
.products-banner {
    margin-top: var(--header-height);
    position: relative;
    height: 56vh; min-height: 380px; max-height: 560px;
    overflow: hidden;
}
.products-banner-slide {
    position: absolute; inset: 0;
    background-size: cover; background-position: center;
    opacity: 0; transition: opacity 1s ease; z-index: 1;
}
.products-banner-slide.active { opacity: 1; z-index: 2; }
.products-banner-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(100deg, rgba(7,89,133,0.82) 0%, rgba(2,132,199,0.45) 55%, rgba(2,132,199,0.15) 100%);
}
.products-banner-content {
    position: absolute; left: 0; right: 0; top: 50%;
    transform: translateY(-50%); z-index: 3;
    padding: 0 24px; max-width: var(--max-width); margin: 0 auto;
}
.products-banner-title {
    color: var(--white); font-size: 2.6rem; font-weight: 800;
    margin-bottom: 14px; text-shadow: 0 3px 16px rgba(0,0,0,0.35);
}
.products-banner-subtitle {
    color: rgba(255,255,255,0.92); font-size: 1.2rem; font-weight: 500;
}
.products-banner-dots {
    position: absolute; left: 50%; transform: translateX(-50%);
    bottom: 44px; z-index: 4; display: flex; gap: 10px;
}
.products-banner-dots .pdot {
    width: 10px; height: 10px; border-radius: 50%;
    background: rgba(255,255,255,0.5); cursor: pointer;
    transition: var(--transition);
}
.products-banner-dots .pdot.active {
    background: var(--white); width: 26px; border-radius: 5px;
}

/* --- 2. 快速分类导航条 --- */
.products-navbar {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    box-shadow: 0 2px 12px rgba(2,132,199,0.06);
    position: relative; z-index: 20;
}
.products-navbar-inner {
    display: flex; align-items: center; gap: 8px;
    padding: 12px 20px; flex-wrap: wrap;
}
.pnav-item {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 18px; border-radius: 24px;
    color: var(--gray-600); font-size: 0.92rem; font-weight: 600;
    border: 1px solid var(--gray-200);
    transition: var(--transition); cursor: pointer;
}
.pnav-item:hover { color: var(--primary); border-color: var(--primary); transform: translateY(-1px); }
.pnav-item.active { background: var(--primary); border-color: var(--primary); color: var(--white); }
.pnav-icon { font-size: 1rem; }

/* --- 3. 产品列表区 --- */
.products-section { padding: 40px 0 60px; background: var(--gray-50); }
.products-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 28px; align-items: start;
}
/* 左侧固定悬浮分类栏 */
.products-sidebar {
    position: sticky; top: calc(var(--header-height) + 16px);
    background: var(--white); border-radius: var(--radius-lg);
    box-shadow: var(--shadow); padding: 22px 16px;
    border-top: 3px solid var(--primary);
}
.sidebar-title {
    font-size: 1.15rem; font-weight: 700; color: var(--primary);
    padding-bottom: 14px; margin-bottom: 10px;
    border-bottom: 1px solid var(--gray-200);
}
.sidebar-nav li { margin-bottom: 4px; }
.side-link {
    display: flex; align-items: center; gap: 8px;
    padding: 10px 12px; border-radius: var(--radius);
    color: var(--gray-700); font-size: 0.92rem; font-weight: 500;
    transition: var(--transition);
}
.side-link:hover { background: var(--gray-50); color: var(--primary); }
.side-link.active {
    background: var(--primary); color: var(--white);
    box-shadow: 0 4px 12px rgba(2,132,199,0.3);
}
.side-icon { font-size: 1.05rem; flex-shrink: 0; }
.side-name { flex: 1; }
.side-count {
    font-size: 0.72rem; background: var(--gray-100);
    padding: 2px 8px; border-radius: 10px; color: var(--gray-500);
}
.side-link.active .side-count { background: rgba(255,255,255,0.25); color: var(--white); }
.sidebar-slogan {
    margin-top: 16px; text-align: center;
    font-size: 0.8rem; color: var(--primary); font-weight: 600;
    letter-spacing: 1px; padding: 10px 6px;
    background: var(--gray-50); border-radius: var(--radius);
}

/* 移动端下拉分类菜单（PC隐藏） */
.products-mobile-filter { display: none; }

/* 产品分类区块 */
.product-category-block { margin-bottom: 44px; scroll-margin-top: calc(var(--header-height) + 90px); }
.category-block-header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 20px; padding-bottom: 12px;
    border-bottom: 2px solid var(--gray-200);
}
.category-block-title {
    display: flex; align-items: center; gap: 10px;
    font-size: 1.4rem; font-weight: 700; color: var(--primary);
}
.block-icon { font-size: 1.4rem; }
.category-block-count {
    background: var(--primary); color: var(--white);
    font-size: 0.78rem; padding: 3px 12px; border-radius: 14px;
}

/* 产品卡片网格：PC 3列 */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.product-card {
    position: relative;
    background: var(--white); border-radius: var(--radius-lg);
    overflow: hidden; box-shadow: var(--shadow);
    border: 2px solid transparent;
    display: flex; flex-direction: column;
    transition: var(--transition);
}
.product-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary);
    box-shadow: 0 14px 34px rgba(2,132,199,0.18);
}
.product-card.featured { border-color: var(--primary); }
.product-tag {
    position: absolute; top: 12px; right: 12px; z-index: 3;
    background: var(--accent); color: var(--white);
    font-size: 0.72rem; font-weight: 700; letter-spacing: 1px;
    padding: 4px 10px; border-radius: 4px;
    box-shadow: 0 3px 10px rgba(244,129,31,0.4);
}
.product-img { overflow: hidden; }
.product-img img {
    width: 100%; height: 200px; object-fit: cover;
    transition: transform 0.45s ease;
}
.product-card:hover .product-img img { transform: scale(1.06); }
.product-body {
    padding: 18px 16px 20px; display: flex; flex-direction: column; flex: 1;
}
.product-name {
    font-size: 1.05rem; font-weight: 700; color: var(--gray-800);
    margin-bottom: 8px; line-height: 1.4;
}
.product-desc {
    font-size: 0.85rem; color: var(--text-light);
    margin-bottom: 8px; line-height: 1.6; flex: 1;
}
.product-spec {
    font-size: 0.8rem; color: var(--gray-500);
    background: var(--gray-50); border-left: 3px solid var(--primary);
    padding: 8px 10px; border-radius: 0 var(--radius) var(--radius) 0;
    margin-bottom: 16px; line-height: 1.6;
}
.product-actions { display: flex; gap: 10px; margin-top: auto; }
.product-actions .btn { flex: 1; padding: 10px 8px; font-size: 0.9rem; border-radius: var(--radius); }
.btn-detail {
    background: var(--primary); color: var(--white);
}
.btn-detail:hover { background: var(--primary-light); color: var(--white); }
.btn-inquiry {
    background: var(--accent); color: var(--white);
}
.btn-inquiry:hover { background: var(--accent-hover); color: var(--white); }

/* --- 4. 底部信任板块 --- */
.trust-section { padding: 70px 0; background: var(--white); }
.trust-block {
    margin-bottom: 40px; padding: 30px;
    background: var(--gray-50); border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}
.trust-block-title {
    font-size: 1.25rem; font-weight: 700; color: var(--primary);
    margin-bottom: 22px; padding-left: 14px;
    border-left: 4px solid var(--accent);
}
/* 4.1 全产业链时间轴 */
.trust-timeline { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.trust-timeline-item {
    position: relative; background: var(--white);
    border-radius: var(--radius); padding: 18px 16px;
    box-shadow: var(--shadow); border-top: 3px solid var(--primary);
}
.trust-timeline-year {
    display: inline-block; font-size: 1.3rem; font-weight: 800;
    color: var(--primary); margin-bottom: 6px;
}
.trust-timeline-desc { font-size: 0.88rem; color: var(--text-light); line-height: 1.7; }
/* 4.2 车间设备 */
.equipment-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.equipment-item {
    background: var(--white); border-radius: var(--radius);
    padding: 20px 16px; box-shadow: var(--shadow); text-align: center;
    border-bottom: 3px solid var(--primary); transition: var(--transition);
}
.equipment-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.equipment-item h4 { color: var(--primary); font-size: 1rem; margin-bottom: 8px; }
.equipment-item p { font-size: 0.82rem; color: var(--text-light); line-height: 1.6; }
/* 4.3 资质证书 */
.cert-trust-list {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 24px;
}
.cert-trust-list li {
    background: var(--white); border-radius: var(--radius);
    padding: 12px 16px; font-size: 0.92rem; color: var(--gray-700);
    box-shadow: var(--shadow);
}
.cert-trust-list li::before { color: var(--primary); }

/* --- 产品详情 / 询价弹窗 --- */
.product-modal {
    position: fixed; inset: 0; z-index: 1100;
    background: rgba(15,23,42,0.6); backdrop-filter: blur(4px);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; visibility: hidden; transition: all 0.3s ease;
}
.product-modal.open { opacity: 1; visibility: visible; }
.product-modal-box {
    position: relative; width: 92%; max-width: 760px; max-height: 86vh;
    overflow-y: auto; background: var(--white);
    border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
    transform: translateY(30px); transition: transform 0.3s ease;
}
.product-modal.open .product-modal-box { transform: translateY(0); }
.product-modal-close {
    position: absolute; top: 12px; right: 16px; z-index: 5;
    width: 36px; height: 36px; border: none; border-radius: 50%;
    background: var(--gray-100); color: var(--gray-700);
    font-size: 1.4rem; line-height: 1; cursor: pointer;
    transition: var(--transition);
}
.product-modal-close:hover { background: var(--accent); color: var(--white); }
.product-modal-body {
    display: grid; grid-template-columns: 1fr 1.2fr; gap: 24px;
    padding: 30px;
}
.product-modal-img { overflow: hidden; border-radius: var(--radius); }
.product-modal-img img {
    width: 100%; height: 100%; min-height: 260px; object-fit: cover;
}
.product-modal-name {
    font-size: 1.5rem; font-weight: 700; color: var(--primary);
    margin-bottom: 12px;
}
.product-modal-desc { font-size: 0.95rem; color: var(--text); line-height: 1.8; margin-bottom: 14px; }
.product-modal-spec {
    font-size: 0.88rem; color: var(--gray-700);
    background: var(--gray-50); border-left: 3px solid var(--primary);
    padding: 12px 14px; border-radius: 0 var(--radius) var(--radius) 0;
    margin-bottom: 14px; line-height: 1.7;
}
.product-modal-slogan {
    font-size: 0.85rem; color: var(--accent); font-weight: 700;
    letter-spacing: 2px; margin-bottom: 16px;
}
.product-modal-cta { width: 100%; }

/* RTL 适配（阿拉伯语） */
[dir="rtl"] .products-banner-overlay { background: linear-gradient(-100deg, rgba(7,89,133,0.82) 0%, rgba(2,132,199,0.45) 55%, rgba(2,132,199,0.15) 100%); }
[dir="rtl"] .product-spec { border-left: none; border-right: 3px solid var(--primary); border-radius: var(--radius) 0 0 var(--radius); }
[dir="rtl"] .trust-block-title { padding-left: 0; padding-right: 14px; border-left: none; border-right: 4px solid var(--accent); }
[dir="rtl"] .product-modal-spec { border-left: none; border-right: 3px solid var(--primary); border-radius: var(--radius) 0 0 var(--radius); }

/* ========================================
   ABOUT PAGE - 国瑞能标准架构
   ======================================== */
/* 1. Banner */
.about-banner {
    margin-top: var(--header-height);
    width: 100%; height: 60vh; min-height: 400px;
    position: relative; overflow: hidden;
    display: flex; align-items: center; justify-content: center;
}
.about-banner-overlay {
    position: absolute; inset: 0; z-index: 1;
    background: linear-gradient(90deg, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0.5) 100%);
}
.banner-text {
    position: relative; z-index: 2; text-align: center; color: #fff; padding: 0 20px;
}
.banner-text h1 {
    font-size: 2.8rem; font-weight: 800; margin-bottom: 16px;
    text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
.banner-subtitle {
    font-size: 1.15rem; color: rgba(255,255,255,0.88);
    max-width: 700px; margin: 0 auto; line-height: 1.6;
}

/* 2. 数据卡片 */
.data-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 48px; }
.data-card {
    background: #f7f8fa; border-radius: var(--radius-lg);
    padding: 36px 20px; text-align: center;
    transition: var(--transition); border: 1px solid var(--gray-200);
}
.data-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--primary); }
.data-num {
    font-size: 3rem; font-weight: 800; color: var(--accent);
    line-height: 1; margin-bottom: 8px;
}
.data-unit { font-size: 1.1rem; font-weight: 600; color: var(--primary); }
.data-desc { font-size: 0.95rem; font-weight: 600; color: var(--primary); margin-bottom: 10px; }
.data-detail { font-size: 0.82rem; color: var(--text-light); line-height: 1.6; }

/* 3. 全球布局 */
.about-global { background: var(--gray-50); }
.global-content { max-width: 900px; margin: 0 auto; text-align: center; }
.global-map { margin-bottom: 24px; }
.global-map-wrapper { position: relative; display: inline-block; max-width: 900px; width: 100%; }
.global-map-wrapper img { width: 100%; height: auto; border-radius: var(--radius-lg); display: block; }
/* Map markers overlay */
.map-marker { position: absolute; transform: translate(-50%, -50%); z-index: 2; cursor: pointer; }
.marker-dot {
    display: block; width: 14px; height: 14px;
    background: #e63928; border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(230, 57, 40, 0.3), 0 0 12px rgba(230, 57, 40, 0.4);
    animation: pulse-dot 2s infinite; margin: 0 auto 4px;
}
.marker-dot.small { width: 10px; height: 10px; box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.3); background: #0284c7; animation: pulse-dot-blue 2.5s infinite; }
.map-marker-main .marker-dot { width: 18px; height: 18px; box-shadow: 0 0 0 6px rgba(230, 57, 40, 0.25), 0 0 16px rgba(230, 57, 40, 0.5); }
@keyframes pulse-dot {
    0%, 100% { box-shadow: 0 0 0 4px rgba(230, 57, 40, 0.3), 0 0 12px rgba(230, 57, 40, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(230, 57, 40, 0.1), 0 0 20px rgba(230, 57, 40, 0.2); }
}
@keyframes pulse-dot-blue {
    0%, 100% { box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.3); }
    50% { box-shadow: 0 0 0 7px rgba(2, 132, 199, 0.08); }
}
.marker-label {
    font-size: 11px; font-weight: 700; color: #fff;
    background: rgba(230, 57, 40, 0.9); padding: 3px 8px;
    border-radius: 12px; white-space: nowrap; text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
.marker-label small { font-weight: 400; font-size: 9px; opacity: 0.9; }
.marker-label.small { font-size: 9px; background: rgba(2, 132, 199, 0.85); padding: 2px 7px; }
.global-map-legend {
    display: flex; justify-content: center; gap: 20px; flex-wrap: wrap;
    margin-bottom: 20px; font-size: 0.85rem; color: var(--text-light);
}
.legend-item { display: flex; align-items: center; gap: 6px; }
.legend-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.legend-dot.red { background: #e63928; }
.legend-dot.blue { background: #0284c7; }
.global-desc { color: var(--text-light); font-size: 1rem; line-height: 1.8; max-width: 700px; margin: 0 auto; }

/* 4. 时间轴（纵向） */
.timeline-wrap {
    position: relative; max-width: 700px; margin: 0 auto;
    border-left: 2px solid var(--accent); padding-left: 40px;
}
.timeline-item {
    margin-bottom: 36px; position: relative;
    display: flex; gap: 20px; align-items: flex-start;
}
.timeline-item::before {
    content: ''; width: 12px; height: 12px;
    background: var(--accent); border-radius: 50%;
    position: absolute; left: -47px; top: 8px;
}
.timeline-year {
    font-size: 1.3rem; font-weight: 800; color: var(--accent);
    min-width: 60px; line-height: 1.4;
}
.timeline-text { color: var(--text-light); line-height: 1.7; flex: 1; font-size: 0.95rem; }

/* 5. 品牌文化 */
.about-brand { background: var(--white); }
.brand-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-bottom: 48px; }
.brand-card {
    text-align: center; padding: 32px 20px;
    background: var(--gray-50); border-radius: var(--radius-lg);
    transition: var(--transition); border: 1px solid var(--gray-100);
}
.brand-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--primary); }
.brand-icon { font-size: 2.5rem; margin-bottom: 12px; }
.brand-card h3 { font-size: 1.1rem; color: var(--primary); margin-bottom: 10px; font-weight: 700; }
.brand-card p { font-size: 0.88rem; color: var(--text-light); line-height: 1.7; }

.about-intro-text h2,
.brand-grid + .about-values { margin-top: 0; }

/* 6. 资质网格 */
.cert-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.cert-item {
    border: 1px solid var(--gray-200); border-radius: var(--radius-lg);
    padding: 12px; text-align: center; cursor: pointer;
    transition: var(--transition); background: var(--white);
}
.cert-item:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.cert-img img { width: 100%; height: 160px; object-fit: cover; border-radius: var(--radius); margin-bottom: 8px; }
.cert-item p { font-size: 0.82rem; color: var(--text-light); }

/* 7. 合作伙伴 */
.about-partners { background: var(--gray-50); }
.partners-grid { display: flex; flex-wrap: nowrap; justify-content: center; gap: 24px; align-items: center; }
.partner-item {
    text-align: center; padding: 20px 16px;
    background: var(--white); border-radius: var(--radius-lg);
    box-shadow: var(--shadow); transition: var(--transition);
    flex: 0 0 auto; min-width: 150px;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.partner-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.partner-item img { width: auto; height: 64px; max-width: 180px; object-fit: contain; margin-bottom: 10px; }
.partner-item span { display: block; font-size: 0.8rem; color: var(--text-light); font-weight: 500; white-space: nowrap; }

/* 8. 农光互补 */
.about-green { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); }
.about-green .section-title { color: var(--white); }
.about-green .section-title::after { background: var(--accent); }
.green-content { max-width: 700px; margin: 0 auto; text-align: center; }
.green-content p { color: rgba(255,255,255,0.9); font-size: 1.05rem; line-height: 1.8; }

/* Intro text */
.about-intro-text p { color: var(--text-light); margin-bottom: 16px; line-height: 1.8; }
.about-lead { font-size: 1.05rem; font-weight: 500; color: var(--primary) !important; }

/* Values */
.about-values { margin-top: 24px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.about-values blockquote {
    border-left: 3px solid var(--accent); padding: 12px 20px;
    font-style: italic; margin: 0;
    color: var(--primary); background: var(--gray-50);
    border-radius: 0 var(--radius) var(--radius) 0;
}

/* Factory / Trade / Logs / Team reused styles */
.factory-content p { text-align: center; max-width: 800px; margin: 0 auto; color: var(--text-light); font-size: 1.05rem; line-height: 1.8; }
.trade-content { max-width: 800px; margin: 0 auto; text-align: center; }
.trade-content p { color: var(--text-light); font-size: 1rem; line-height: 1.8; }
.logs-content { max-width: 800px; margin: 0 auto; text-align: center; }
.logs-content p { color: var(--text-light); font-size: 1rem; line-height: 1.8; margin-bottom: 24px; }
.logs-image img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); margin: 0 auto; max-height: 500px; object-fit: contain; width: 100%; }
.culture-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.culture-card {
    background: var(--white); border-radius: var(--radius-lg);
    overflow: hidden; box-shadow: var(--shadow);
}
.culture-image img { width: 100%; height: 240px; object-fit: cover; }
.culture-card p { padding: 20px; font-size: 0.95rem; color: var(--text-light); }

/* About Section scroll animation */
.about-section { opacity: 0; transform: translateY(40px); transition: all 0.6s ease; }
.about-section.visible { opacity: 1; transform: translateY(0); }

/* ========================================
   CONTACT PAGE
   ======================================== */
.contact-info-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.contact-info-card {
    text-align: center; padding: 32px 16px;
    background: var(--white); border-radius: var(--radius-lg);
    box-shadow: var(--shadow); transition: var(--transition);
}
.contact-info-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.contact-icon-wrapper { margin-bottom: 16px; }
.contact-icon { font-size: 2.5rem; }
.contact-info-card h3 { font-size: 1.05rem; color: var(--primary); margin-bottom: 8px; }
.contact-info-card p, .contact-info-card a { font-size: 0.9rem; color: var(--text-light); }

/* About Us Background */
.contact-about-bg {
    position: relative;
    background: url('assets/images/AboutUs/AboutUs.webp') center center / cover no-repeat;
    min-height: 500px;
    display: flex; align-items: center;
}
.contact-about-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to bottom, rgba(7, 89, 133, 0.75), rgba(2, 132, 199, 0.65));
    z-index: 1;
}
.contact-about-content {
    position: relative; z-index: 2;
    text-align: center; padding: 80px 20px;
}
.section-title-white {
    color: var(--white) !important;
}
.section-title-white::after { background: var(--accent); }
.contact-about-text {
    max-width: 800px; margin: 0 auto;
    color: rgba(255,255,255,0.9);
    font-size: 1.05rem; line-height: 1.8;
}

.contact-form-section { background: var(--gray-50); }
.inquiry-form { max-width: 700px; margin: 0 auto; background: var(--white); padding: 40px; border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 600; color: var(--primary); font-size: 0.9rem; }
.form-group.required label::after { content: ' *'; color: var(--accent); }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 12px 16px; border: 2px solid var(--gray-200);
    border-radius: var(--radius); font-size: 0.95rem; font-family: inherit;
    transition: var(--transition); background: var(--white);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(244,129,31,0.1);
}
.file-input { padding: 10px 0 !important; border: none !important; }
.form-message { padding: 16px 20px; border-radius: var(--radius); margin-bottom: 24px; font-weight: 500; }
.form-success { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.form-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }

/* ========================================
   LIGHTBOX
   ======================================== */
.lightbox { display: none; position: fixed; z-index: 2000; inset: 0; background: rgba(0,0,0,0.9); align-items: center; justify-content: center; flex-direction: column; }
.lightbox.open { display: flex; }
.lightbox-content { max-width: 90%; max-height: 80vh; object-fit: contain; border-radius: var(--radius); }
.lightbox-caption { color: var(--white); margin-top: 16px; font-size: 1rem; }
.lightbox-close { position: absolute; top: 24px; right: 40px; color: var(--white); font-size: 2.5rem; cursor: pointer; transition: var(--transition); }
.lightbox-close:hover { color: var(--accent); }

/* ========================================
   FOOTER
   ======================================== */
.site-footer { background: var(--primary-dark); color: rgba(255,255,255,0.7); padding: 50px 0 30px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
.footer-inner h4 { color: var(--white); font-size: 1.05rem; margin-bottom: 16px; }
.footer-info p { margin-bottom: 8px; font-size: 0.9rem; }
.footer-service { color: var(--accent); margin-top: 12px; }
.footer-nav ul li { margin-bottom: 6px; }
.footer-nav ul li, .footer-nav ul li a { font-size: 0.85rem; color: rgba(255,255,255,0.6); }
.footer-nav ul li a:hover { color: var(--accent); }
.footer-bottom { grid-column: 1 / -1; text-align: center; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.1); font-size: 0.85rem; }

/* ========================================
   FLOATING ELEMENTS
   ======================================== */
.whatsapp-float {
    position: fixed; bottom: 28px; right: 28px; z-index: 1500;
    width: 56px; height: 56px; border-radius: 50%;
    background: #25D366; color: var(--white);
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 16px rgba(37,211,102,0.4);
    transition: var(--transition); animation: pulse 2s infinite;
}
.whatsapp-float:hover { transform: scale(1.1); color: var(--white); box-shadow: 0 6px 24px rgba(37,211,102,0.5); }
@keyframes pulse {
    0%, 100% { box-shadow: 0 4px 16px rgba(37,211,102,0.4); }
    50% { box-shadow: 0 4px 28px rgba(37,211,102,0.7); }
}

.service-badge {
    position: fixed; bottom: 28px; left: 28px; z-index: 1500;
    background: var(--primary); color: var(--white);
    padding: 10px 20px; border-radius: 50px;
    font-size: 0.85rem; font-weight: 600;
    box-shadow: 0 4px 16px rgba(2, 132, 199, 0.3); display: flex; align-items: center; gap: 8px;
}
.badge-dot { width: 8px; height: 8px; background: #22c55e; border-radius: 50%; animation: blink 1.5s infinite; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }

/* ========================================
   RESPONSIVE
   ======================================== */

/* Tablet: 768px - 1023px */
@media (max-width: 1023px) {
    :root { --header-height: 60px; }
    .section { padding: 50px 0; }
    .section-title { font-size: 1.6rem; margin-bottom: 36px; }

    .main-nav { display: none; }
    .main-nav.open {
        display: block; position: absolute; top: var(--header-height);
        left: 0; right: 0; background: var(--white); padding: 16px;
        box-shadow: 0 8px 24px rgba(0,0,0,0.1); border-top: 1px solid var(--gray-200);
        z-index: 1002;
    }
    .main-nav .nav-list { flex-direction: column; }
    .nav-item a { padding: 12px 16px; color: var(--text); }
    .nav-item a:hover, .nav-item.active a { background: var(--primary); color: var(--white); }
    /* 移动端菜单打开时白底黑字 */
    .main-nav.open .nav-item a { color: var(--text); }
    .main-nav.open .nav-item a:hover,
    .main-nav.open .nav-item.active a { background: var(--primary); color: var(--white); }
    .mobile-menu-toggle { display: flex; }

    /* 轮播响应式 */
    .carousel-content.right-layout {
        right: 6%; max-width: 420px;
    }
    .carousel-title { font-size: 2.2rem; }
    .carousel-subtitle { font-size: 1rem; margin-bottom: 24px; }
    .carousel-points { gap: 14px; }
    .point-icon { width: 48px; height: 48px; font-size: 1rem; }
    .carousel-dots-vertical { right: 16px; gap: 10px; }
    .carousel-dots-vertical .vdot { width: 8px; height: 8px; }

    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    .products-preview-grid, .stats-grid,
    .contact-info-grid, .services-grid, .specs-grid { grid-template-columns: repeat(2, 1fr); }
    .cert-grid { grid-template-columns: repeat(2, 1fr); }

    .category-grid, .factory-gallery, .cert-list { grid-template-columns: repeat(2, 1fr); }

    .about-intro-grid, .production-grid { grid-template-columns: 1fr; }
    .data-row, .brand-grid { grid-template-columns: repeat(2, 1fr); }

    .timeline::before { left: 24px; }
    .timeline-item, .timeline-item.right { flex-direction: row; }
    .timeline-dot { left: 24px; }
    .timeline-content { width: calc(100% - 56px); margin-left: 56px; }

    /* 产品页响应式 - 平板 */
    .products-layout { grid-template-columns: 200px 1fr; gap: 20px; }
    .product-grid { grid-template-columns: repeat(2, 1fr); }
    .trust-timeline { grid-template-columns: repeat(2, 1fr); }
    .equipment-grid { grid-template-columns: repeat(2, 1fr); }

    .footer-inner { grid-template-columns: 1fr 1fr; }
    .footer-info { grid-column: 1 / -1; }

    .service-badge { bottom: 60px; left: 16px; font-size: 0.75rem; padding: 8px 14px; }
}

/* Mobile: 480px - 767px */
@media (max-width: 767px) {
    .section { padding: 40px 0; }
    .section-title { font-size: 1.35rem; margin-bottom: 28px; }

    /* 轮播响应式 */
    .carousel-section { height: 80vh; }
    .carousel-content.right-layout {
        right: 0; left: 0; max-width: 100%;
        padding: 0 24px; text-align: center;
        transform: translateY(0); top: auto; bottom: 50px;
    }
    .carousel-title { font-size: 1.5rem; }
    .carousel-subtitle { font-size: 0.9rem; margin-bottom: 20px; }
    .carousel-points { justify-content: center; gap: 12px; }
    .point-icon { width: 42px; height: 42px; font-size: 0.9rem; }
    .point-text { font-size: 0.7rem; }
    .carousel-btn { padding: 10px 24px; font-size: 0.85rem; }
    .carousel-dots-vertical { display: none; }
    /* 移动端兜底底部圆点 */
    .carousel-dots-horizontal {
        position: absolute; bottom: 16px; left: 50%; transform: translateX(-50%);
        z-index: 10; display: flex; gap: 8px;
    }
    .carousel-dots-horizontal .hdot {
        width: 8px; height: 8px; border-radius: 50%;
        background: rgba(255,255,255,0.5); cursor: pointer;
    }
    .carousel-dots-horizontal .hdot.active { background: var(--accent); width: 20px; border-radius: 4px; }

    .advantages-grid, .products-preview-grid, .stats-grid,
    .contact-info-grid, .services-grid, .specs-grid,
    .category-grid, .factory-gallery, .cert-list, .culture-grid,
    .data-row, .brand-grid { grid-template-columns: 1fr; }
    .cert-grid { grid-template-columns: 1fr; }
    .about-values { grid-template-columns: 1fr; }
    .partners-grid { flex-wrap: wrap; gap: 12px; }
    .partner-item { min-width: 100px; padding: 12px 8px; }
    .partner-item img { height: 40px; max-width: 100px; }

    .banner-text h1 { font-size: 1.6rem; }
    .banner-subtitle { font-size: 0.9rem; }
    .about-banner { height: 50vh; min-height: 300px; }
    .contact-hero { height: 50vh; min-height: 300px; }

    .timeline-wrap { padding-left: 28px; }
    .timeline-item::before { left: -35px; }
    .timeline-year { font-size: 1.1rem; min-width: 50px; }

    /* 产品页响应式 - 移动端 */
    .products-banner { height: 50vh; min-height: 320px; }
    .products-banner-title { font-size: 1.7rem; }
    .products-banner-subtitle { font-size: 0.95rem; }
    .products-navbar { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .products-navbar-inner { flex-wrap: nowrap; padding: 10px 12px; }
    .pnav-item { white-space: nowrap; padding: 7px 14px; font-size: 0.85rem; }
    .products-layout { grid-template-columns: 1fr; }
    .products-sidebar { display: none; }
    .products-mobile-filter { display: block; margin-bottom: 24px; }
    .products-mobile-filter select {
        width: 100%; padding: 12px 14px; font-size: 0.95rem;
        border: 1px solid var(--gray-300); border-radius: var(--radius);
        background: var(--white); color: var(--gray-800);
    }
    .products-section { padding: 30px 0 44px; }
    .product-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .product-img img { height: 150px; }
    .product-body { padding: 14px 12px 16px; }
    .product-name { font-size: 0.95rem; }
    .product-desc { font-size: 0.8rem; }
    .product-spec { font-size: 0.75rem; }
    .product-actions { flex-direction: column; gap: 8px; }
    .category-block-title { font-size: 1.15rem; }
    .trust-section { padding: 44px 0; }
    .trust-block { padding: 20px 16px; }
    .trust-timeline { grid-template-columns: 1fr; }
    .equipment-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .cert-trust-list { grid-template-columns: 1fr; }
    .product-modal-body { grid-template-columns: 1fr; padding: 20px; gap: 16px; }
    .product-modal-img img { min-height: 200px; }
    .product-modal-name { font-size: 1.25rem; }

    .form-row { grid-template-columns: 1fr; }
    .inquiry-form { padding: 24px; }

    .page-hero-title { font-size: 1.6rem; }

    .footer-inner { grid-template-columns: 1fr; gap: 24px; }

    .whatsapp-float { width: 48px; height: 48px; bottom: 20px; right: 20px; }
    .whatsapp-float svg { width: 24px; height: 24px; }
    .service-badge { bottom: 56px; left: 12px; font-size: 0.7rem; padding: 6px 12px; }
}

/* Small Mobile: < 480px */
@media (max-width: 480px) {
    .logo-text { font-size: 0.9rem; }
    .logo-sub { display: none; }
    .lang-name { display: none; }
}

/* ========================================
   RTL: Arabic
   ======================================== */
[dir="rtl"] .site-main,
[dir="rtl"] .site-footer { direction: rtl; text-align: right; }
[dir="rtl"] .header-inner { flex-direction: row-reverse; }
[dir="rtl"] .logo { direction: ltr; }
[dir="rtl"] .lang-switcher { margin-right: auto; margin-left: 0; }
[dir="rtl"] .lang-dropdown { right: auto; left: 0; }
[dir="rtl"] .banner-title { direction: rtl; }
[dir="rtl"] .carousel-content.right-layout {
    right: auto; left: 8%; text-align: right;
}
[dir="rtl"] .carousel-dots-vertical { right: auto; left: 28px; }
[dir="rtl"] .section-title::after { left: 50%; right: auto; }
[dir="rtl"] .advantage-card { direction: rtl; }
[dir="rtl"] .advantage-desc { text-align: right; }
[dir="rtl"] .spec-item { border-left: none; border-right: 4px solid var(--accent); }
[dir="rtl"] .about-values blockquote { border-left: none; border-right: 3px solid var(--accent); border-radius: var(--radius) 0 0 var(--radius); }
[dir="rtl"] .whatsapp-float { right: auto; left: 28px; }
[dir="rtl"] .service-badge { left: auto; right: 28px; }
[dir="rtl"] .timeline-wrap { border-left: none; border-right: 2px solid var(--accent); padding-left: 0; padding-right: 40px; }
[dir="rtl"] .timeline-item::before { left: auto; right: -47px; }