/* ============================================
   卍法CMS - 前台样式 v2.0
   户外B端风格 - 军绿/沙卡其/铁锈橙
   ============================================ */

/* --- CSS变量 --- */
:root {
    --primary: #2F4038;
    --primary-light: #46584F;
    --primary-dark: #232F2A;
    --accent: #D1603D;
    --accent-hover: #B84F30;
    --dark: #1E2422;
    --dark-alt: #2B3430;
    --text: #222222;
    --text-muted: #6c757d;
    --light-bg: #F5F5F3;
    --mid-green: #C8B89E;
    --white: #ffffff;
    --border: #E4E2DC;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.12);
    --radius: 8px;
    --radius-sm: 4px;
    --transition: all 0.3s ease;
}

/* --- 基础 --- */
html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text);
    background: var(--light-bg);
    line-height: 1.7;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    color: var(--text);
}

a {
    color: var(--primary);
    transition: var(--transition);
}

a:hover {
    color: var(--accent);
    opacity: 1;
}

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

/* --- 按钮全局 --- */
.btn {
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    border-radius: var(--radius-sm);
    letter-spacing: 0.5px;
    transition: var(--transition);
}

.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-light);
    border-color: var(--primary-light);
}

.btn-accent {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

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

.btn-outline-primary {
    color: var(--primary);
    border-color: var(--primary);
}

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

/* --- 顶部信息栏 --- */
.top-bar {
    font-size: 0.78rem;
    background: var(--dark) !important;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    letter-spacing: 0.3px;
}

.top-bar i {
    color: var(--accent);
}

/* --- 导航 --- */
.navbar {
    background: var(--dark) !important;
    padding: 0.8rem 0;
    box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.navbar-brand {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: #fff !important;
    display: flex;
    align-items: center;
    gap: 10px;
}

.navbar-brand .brand-icon {
    color: var(--accent);
    font-size: 1.3rem;
}

.navbar-brand .brand-text {
    color: #fff;
}

/* 首页品牌名H1重置，保持与span一致的视觉效果 */
.navbar-brand h1.brand-text {
    font-size: inherit;
    font-weight: inherit;
    font-family: inherit;
    letter-spacing: inherit;
    line-height: inherit;
    margin: 0;
    padding: 0;
    color: #fff;
}

.navbar .nav-link {
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 1.5px;
    text-transform: none;
    color: rgba(255,255,255,0.8) !important;
    padding: 0.5rem 1rem !important;
    transition: var(--transition);
    position: relative;
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
    color: #fff !important;
}

.navbar .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1rem;
    right: 1rem;
    height: 2px;
    background: var(--accent);
}

.navbar .nav-link:hover::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1rem;
    right: 1rem;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
}

.navbar-toggler {
    border-color: rgba(255,255,255,0.3);
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.8%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.nav-cta-btn {
    background: var(--accent) !important;
    border-color: var(--accent) !important;
    color: #fff !important;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 0.8rem;
    letter-spacing: 1px;
    text-transform: none;
    border-radius: var(--radius-sm);
    padding: 0.5rem 1.2rem !important;
}

.nav-cta-btn:hover {
    background: var(--accent-hover) !important;
    border-color: var(--accent-hover) !important;
}

/* --- Banner 轮播 --- */
.banner-section .carousel-item {
    height: 600px;
}

.banner-slide {
    height: 600px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.banner-overlay {
    height: 100%;
    display: flex;
    align-items: center;
    background: linear-gradient(90deg, rgba(31,42,38,0.55) 0%, rgba(31,42,38,0.25) 40%, rgba(31,42,38,0.05) 100%);
}

.banner-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 3.2rem;
    font-weight: 800;
    text-shadow: 1px 2px 4px rgba(0,0,0,0.2);
    letter-spacing: 1px;
    line-height: 1.2;
    text-transform: none;
    color: #ffffff;
}

.banner-subtitle {
    font-family: 'Inter', sans-serif;
    font-size: 1.15rem;
    max-width: 600px;
    margin: 0 auto;
    opacity: 0.9;
    font-weight: 400;
    line-height: 1.8;
    color: #ffffff;
}

.banner-section .carousel-indicators [data-bs-target] {
    background-color: var(--accent);
    width: 30px;
    height: 3px;
}

.banner-section .carousel-control-prev,
.banner-section .carousel-control-next {
    width: 60px;
    opacity: 0;
    transition: opacity 0.3s;
}

.banner-section:hover .carousel-control-prev,
.banner-section:hover .carousel-control-next {
    opacity: 0.8;
}

/* 动画 */
.animate-fadeInUp {
    animation: fadeInUp 0.8s ease forwards;
}

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

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

@media (max-width: 768px) {
    .banner-section .carousel-item,
    .banner-slide,
    .banner-overlay {
        height: 380px;
    }
    .banner-title { font-size: 1.8rem; }
    .banner-subtitle { font-size: 0.95rem; }
}

/* --- Section 标题 --- */
.section-title {
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    position: relative;
    margin-bottom: 0.5rem;
    letter-spacing: 0.5px;
}

.section-title::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background: var(--accent);
    margin: 14px auto 0;
    border-radius: 2px;
}

.section-subtitle {
    font-family: 'Inter', sans-serif;
    color: var(--text-muted);
    font-size: 1rem;
}

/* --- 优势卡片 --- */
.advantage-card {
    transition: var(--transition);
    border: 1px solid var(--border);
    border-bottom: 3px solid transparent;
    background: #FAF9F7;
    position: relative;
    overflow: hidden;
}

.advantage-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-bottom-color: var(--accent);
}

.advantage-icon-wrapper {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.2rem;
    transition: var(--transition);
}

.advantage-card:hover .advantage-icon-wrapper {
    background: var(--accent);
    transform: scale(1.1);
}

.advantage-icon-wrapper i {
    color: #fff;
    font-size: 1.5rem;
}

/* --- 产品卡片 --- */
.product-card {
    transition: var(--transition);
    border: 1px solid var(--border);
    overflow: hidden;
    background: #FAF9F7;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.product-img-wrapper {
    overflow: hidden;
    background: var(--light-bg);
    position: relative;
}

.product-img-wrapper img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .product-img-wrapper img {
    transform: scale(1.08);
}

.product-category-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(47,64,56,0.85);
    color: #fff;
    font-size: 0.7rem;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: none;
    padding: 4px 12px;
    border-radius: 2px;
    z-index: 2;
}

.product-card .card-body {
    padding: 1.2rem;
}

.product-card .card-title a {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
}

.product-view-btn {
    background: var(--primary);
    color: #fff;
    border: none;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.8rem;
    letter-spacing: 1px;
    text-transform: none;
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    display: inline-block;
    text-decoration: none;
}

.product-view-btn:hover {
    background: var(--accent);
    color: #fff;
}

/* --- 页面Banner --- */
.page-banner {
    background-size: cover;
    background-position: center;
    position: relative;
}

.page-banner h1 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    letter-spacing: 2px;
    text-transform: none;
    color: #ffffff;
}

.page-banner .lead {
    font-family: 'Inter', sans-serif;
    color: #ffffff;
}

/* --- 面包屑 --- */
.breadcrumb-nav {
    padding: 0;
}

.breadcrumb {
    margin-bottom: 0;
    padding: 0.5rem 0;
    background: transparent;
    font-size: 0.85rem;
}

.breadcrumb-item a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.breadcrumb-item a:hover {
    color: var(--accent);
}

.breadcrumb-item.active {
    color: var(--text-muted);
}

.breadcrumb-item + .breadcrumb-item::before {
    color: var(--text-muted);
}

/* --- 分页 --- */
.pagination-wrapper {
    margin-top: 2rem;
}

.pagination .page-link {
    border-radius: var(--radius-sm);
    margin: 0 3px;
    min-width: 38px;
    text-align: center;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--primary);
    border-color: var(--border);
    transition: var(--transition);
}

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

.pagination .page-item.active .page-link {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

/* --- 新闻卡片 --- */
.news-card {
    transition: var(--transition);
    border: 1px solid var(--border);
    border-left: 4px solid transparent;
    background: #FAF9F7;
    overflow: hidden;
}

.news-card:hover {
    border-left-color: var(--accent);
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.news-date-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 70px;
    padding: 0.8rem;
    background: var(--light-bg);
    border-radius: var(--radius-sm);
}

.news-date-block .date-day {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.news-date-block .date-month {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: none;
    color: var(--accent);
    letter-spacing: 1px;
}

/* --- 评价卡片 --- */
.testimonials-section {
    background: var(--dark);
    position: relative;
    overflow: hidden;
}

.testimonials-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.testimonial-card {
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius);
    transition: var(--transition);
    position: relative;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    background: rgba(255,255,255,0.12);
}

.testimonial-quote {
    font-family: 'Montserrat', sans-serif;
    font-size: 3rem;
    color: var(--accent);
    line-height: 1;
    opacity: 0.6;
    position: absolute;
    top: 15px;
    left: 20px;
}

.testimonial-card .star-rating i {
    color: var(--accent);
    font-size: 0.85rem;
}

.testimonial-card p {
    color: rgba(255,255,255,0.85);
    font-style: italic;
}

.testimonial-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(209,96,61,0.2);
    border: 2px solid var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
}

.testimonial-avatar i {
    color: var(--accent);
}

/* --- 合作伙伴 --- */
.partner-card {
    transition: var(--transition);
    border: 1px solid var(--border);
    overflow: hidden;
}

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

.partner-card img {
    filter: grayscale(100%);
    opacity: 0.6;
    transition: var(--transition);
}

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

/* --- CTA 区块 --- */
.section-cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    position: relative;
    overflow: hidden;
}

.section-cta::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(255,255,255,0.03);
}

.section-cta h2 {
    color: #fff;
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
}

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

/* --- 回到顶部 --- */
.btn-back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(47,64,56,0.4);
    z-index: 1000;
    transition: var(--transition);
}

.btn-back-to-top:hover {
    background: var(--accent);
    color: #fff;
    transform: translateY(-3px);
}

.btn-back-to-top.show {
    display: flex;
}

/* --- 侧边栏 --- */
.sidebar-card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    background: #FAF9F7;
}

.sidebar-card .card-header {
    background: var(--dark);
    border-bottom: none;
    padding: 1rem 1.2rem;
}

.sidebar-card .card-header h6 {
    color: #fff;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: none;
    font-size: 0.8rem;
    margin: 0;
}

.sidebar-card .list-group-item {
    border: none;
    border-bottom: 1px solid var(--light-bg);
    padding: 0.7rem 1.2rem;
    font-size: 0.9rem;
    transition: var(--transition);
    position: relative;
}

.sidebar-card .list-group-item:hover {
    background: var(--light-bg);
    padding-left: 1.5rem;
}

.sidebar-card .list-group-item.active {
    background: var(--light-bg);
    color: var(--primary);
    font-weight: 700;
    border-left: 3px solid var(--accent);
    padding-left: calc(1.2rem - 3px);
}

.sidebar-card .list-group-item.active:hover {
    padding-left: calc(1.5rem - 3px);
}

/* --- 产品详情 --- */
.product-detail-image {
    min-height: 300px;
    border-radius: var(--radius);
    overflow: hidden;
}

.product-detail-cta {
    background: var(--light-bg);
    border-radius: var(--radius);
    padding: 1.5rem;
}

/* --- 规格表 --- */
.specs-table {
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
}

.specs-table thead th {
    background: var(--primary);
    color: #fff;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 0.8rem;
    letter-spacing: 1px;
    text-transform: none;
    border: none;
}

.specs-table tbody tr:nth-child(even) {
    background: var(--light-bg);
}

.specs-table tbody tr:hover {
    background: rgba(47,64,56,0.04);
}

.specs-table td {
    font-size: 0.88rem;
    border-color: var(--border);
    padding: 0.6rem 1rem;
}

/* --- 新闻详情 --- */
.article-content {
    line-height: 1.9;
    font-size: 1.05rem;
}

.article-content h2 {
    font-family: 'Montserrat', sans-serif;
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.article-content h3 {
    font-family: 'Montserrat', sans-serif;
    margin-top: 1.5rem;
    margin-bottom: 0.8rem;
    font-size: 1.25rem;
    font-weight: 700;
}

.article-content p {
    margin-bottom: 1.3rem;
    color: var(--text);
}

.article-content ul, .article-content ol {
    margin-bottom: 1.3rem;
    padding-left: 1.5rem;
}

.article-content li {
    margin-bottom: 0.5rem;
}

.article-content img {
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    margin: 1rem 0;
}

.article-content blockquote {
    border-left: 4px solid var(--accent);
    background: var(--light-bg);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 var(--radius) var(--radius) 0;
    font-style: italic;
    color: var(--text-muted);
}

/* --- 关于页面 --- */
.data-highlight-section {
    background: var(--dark);
    position: relative;
    overflow: hidden;
}

.data-highlight-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--dark) 100%);
    opacity: 0.7;
}

.data-highlight-item {
    position: relative;
    z-index: 1;
}

.data-highlight-number {
    font-family: 'Montserrat', sans-serif;
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.data-highlight-label {
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    color: rgba(255,255,255,0.7);
    text-transform: none;
    letter-spacing: 2px;
}

.culture-card {
    border: 1px solid var(--border);
    border-bottom: 3px solid transparent;
    transition: var(--transition);
    background: #FAF9F7;
}

.culture-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-bottom-color: var(--accent);
}

.culture-card .culture-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    transition: var(--transition);
}

.culture-card:hover .culture-icon {
    background: var(--accent);
    transform: scale(1.1);
}

.culture-card .culture-icon i {
    color: #fff;
    font-size: 1.5rem;
}

/* --- 联系页面 --- */
.contact-info-card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: #FAF9F7;
    transition: var(--transition);
}

.contact-info-card:hover {
    box-shadow: var(--shadow-md);
}

.contact-info-icon {
    width: 55px;
    height: 55px;
    min-width: 55px;
    border-radius: 50%;
    background: rgba(47,64,56,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.contact-info-card:hover .contact-info-icon {
    background: var(--primary);
}

.contact-info-card:hover .contact-info-icon i {
    color: #fff;
}

.contact-info-icon i {
    color: var(--primary);
    font-size: 1.2rem;
    transition: var(--transition);
}

/* --- 表单样式 --- */
.contact-form .form-control,
.contact-form .form-select {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.7rem 1rem;
    font-size: 0.9rem;
    transition: var(--transition);
    background: #FAF9F7;
}

.contact-form .form-control:focus,
.contact-form .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(47,64,56,0.1);
    border-left: 3px solid var(--primary);
}

.contact-form .form-label {
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text);
}

.contact-form .btn-submit {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 1px;
    text-transform: none;
    padding: 0.8rem 2rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.contact-form .btn-submit:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(209,96,61,0.3);
}

/* --- Footer --- */
.site-footer {
    background: var(--dark) !important;
}

.site-footer h5,
.site-footer h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    letter-spacing: 1px;
    color: #C8B89E !important;
}

.site-footer a {
    transition: var(--transition);
}

.site-footer a:hover {
    color: var(--accent) !important;
    padding-left: 4px;
}

.footer-social-btn {
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-sm);
    padding: 0.4rem 0.8rem;
    font-size: 0.78rem;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    transition: var(--transition);
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    display: inline-block;
}

a.footer-social-btn:hover,
.footer-social-btn:hover {
    background: var(--accent) !important;
    border-color: var(--accent) !important;
    color: #ffffff !important;
}

.site-footer hr {
    border-color: rgba(255,255,255,0.1);
}

/* --- 工厂图片 --- */
.factory-img {
    overflow: hidden;
    border-radius: var(--radius);
    transition: var(--transition);
    border: 1px solid var(--border);
}

.factory-img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-md);
}

/* --- 响应式补丁 --- */
@media (max-width: 991px) {
    .sidebar-responsive {
        display: none;
    }
}

@media (max-width: 767px) {
    .product-card .product-img-wrapper img {
        width: 100%;
        aspect-ratio: 1 / 1;
    }

    .banner-title {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .data-highlight-number {
        font-size: 2.5rem;
    }

    .navbar-brand {
        font-size: 1.2rem;
    }
}

@media (max-width: 576px) {
    .product-img-wrapper img {
        width: 100%;
        aspect-ratio: 1 / 1;
    }
}

/* --- 占位符图片样式 --- */
.placeholder-img {
    background: linear-gradient(135deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 200%;
    animation: placeholderShimmer 2s infinite;
}

@keyframes placeholderShimmer {
    0% { background-position: 200% 200%; }
    100% { background-position: -200% -200%; }
}

/* --- 工具类 --- */
.text-primary-custom {
    color: var(--primary) !important;
}

.text-accent {
    color: var(--accent) !important;
}

.bg-primary-custom {
    background: var(--primary) !important;
}

.bg-accent {
    background: var(--accent) !important;
}

.bg-dark-custom {
    background: var(--dark) !important;
}

/* About页公司简介：文字环绕图片 */
.company-intro-title {
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}
.company-intro {
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}
.company-intro-img {
    float: left;
    width: 500px;
    margin: 0.4rem 1.5rem 1rem 0;
    height: auto;
}
@media (max-width: 575.98px) {
    .company-intro-img {
        float: none;
        display: block;
        margin: 0 auto 1rem;
        width: 100%;
        max-width: 500px;
    }
}

/* 产品图集缩略图：宽屏一排4个，手机一排2个，无3列状态 */
.gallery-thumbs-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0.5rem}
.gallery-thumbs-grid .gallery-thumb{width:100%;height:auto;aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;overflow:hidden}
.gallery-thumbs-grid .gallery-thumb img{width:100%;height:100%;object-fit:cover;display:block}

/* Related Products: 4列, <=600px 2列 */
.related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0.75rem;}
.related-item{min-width:0;}
@media (max-width:600px){
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}