/* ============================================================
   企业官网 - 主样式表
   品牌色: #2b2622 (深炭灰) / #bf8a3d (古铜金)
   ============================================================ */

/* ---------- CSS 变量 ---------- */
:root {
    --color-primary: #2b2622;
    --color-accent: #bf8a3d;
    --color-accent-hover: #a87a30;
    --color-accent-light: #f7efe0;
    --color-bg: #fff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-accent: #faf4e8;
    --color-text: #333;
    --color-text-secondary: #555;
    --color-text-muted: #666;
    --color-text-light: #888;
    --color-border: #ddd;
    --color-border-light: #eee;
    --font-base: 16px;
    --shadow-card: 0 8px 30px rgba(43,38,34,0.1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-scroll-behavior: smooth;
    font-size: 17px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--color-text);
    line-height: 1.6;
    background: var(--color-bg);
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.2s;
}

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

a:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

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

ul, ol {
    list-style: none;
}

/* ---------- 布局 ---------- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.section.pt-0 {
    padding-top: 40px;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: 12px;
    font-weight: 700;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: -webkit-linear-gradient(90deg, var(--color-accent), var(--color-primary));
    background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
    margin: 15px auto 0;
    border-radius: 2px;
}

.section-desc {
    color: var(--color-text-muted);
    font-size: 1.05rem;
}

.section-footer {
    text-align: center;
    margin-top: 40px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
}

/* ---------- 按钮 ---------- */
.btn {
    display: inline-block;
    padding: 12px 30px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
    border: 2px solid transparent;
    text-align: center;
    line-height: 1.4;
}

.btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.btn:active {
    -webkit-transform: scale(0.98);
    transform: scale(0.98);
}

.btn:disabled, .btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

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

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

.btn-secondary {
    background: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.btn-secondary:hover {
    background: var(--color-accent);
    color: var(--color-bg);
}

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

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

.btn-block {
    display: block;
    width: 100%;
}

/* ---------- Header ---------- */
.site-header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo h1 {
    font-size: 1.5rem;
    color: #2b2622;
    font-weight: 800;
}

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

/* Logo 图框 */
.logo-frame {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6px 14px;
    border: 1px solid #e0d5c0;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 1px 4px rgba(191,138,61,0.08);
    transition: border-color 0.2s, box-shadow 0.2s;
    min-height: 52px;
    min-width: 120px;
}

.logo-frame:hover {
    border-color: #bf8a3d;
    box-shadow: 0 2px 10px rgba(191,138,61,0.15);
}

.logo-frame img {
    max-height: 46px;
    width: auto;
    display: block;
}
.main-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    gap: 5px;
}

.nav-list li a {
    display: block;
    padding: 10px 18px;
    color: #555;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: 6px;
    transition: all 0.2s;
}

.nav-list li a:hover {
    color: #bf8a3d;
    background: #faf4e8;
}

.nav-list li.active a {
    color: #bf8a3d;
    background: #faf4e8;
    font-weight: 600;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: #333;
    border-radius: 2px;
    transition: all 0.3s;
}

/* ---------- Hero ---------- */
.hero {
    position: relative;
    padding: 120px 0;
    background: -webkit-linear-gradient(135deg, #2b2622 0%, #4a3a28 100%);
    background: linear-gradient(135deg, #2b2622 0%, #4a3a28 100%);
    color: #fff;
    overflow: hidden;
}

.hero-bg {
    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='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.hero-title {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.15rem;
    opacity: 0.9;
    margin-bottom: 35px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 15px;
}

/* ---------- 页面横幅 ---------- */
.page-banner {
    padding: 60px 0;
    color: #fff;
    text-align: center;
}

.banner-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.breadcrumb {
    font-size: 0.9rem;
    opacity: 0.85;
}

.breadcrumb a {
    color: #fff;
    opacity: 0.8;
}

.breadcrumb a:hover {
    opacity: 1;
}

.breadcrumb .sep {
    margin: 0 8px;
    opacity: 0.5;
}

.breadcrumb .current {
    opacity: 0.9;
}

/* ---------- 产品分类卡片 ---------- */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 25px;
}

.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 35px 20px;
    background: #fff;
    border: 1px solid #eee;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(43,38,34,0.1);
    border-color: #bf8a3d;
}

.category-icon {
    width: 70px;
    height: 70px;
    background: -webkit-linear-gradient(135deg, #f7efe0, #efe2c8);
    background: linear-gradient(135deg, #f7efe0, #efe2c8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    font-size: 1.8rem;
}

.category-name {
    font-size: 1.1rem;
    color: #2b2622;
    font-weight: 600;
    margin-bottom: 8px;
}

/* 子分类卡片：略小、虚线边框，视觉上从属于父分类 */
.cat-child {
    padding: 22px 16px;
    background: #faf4e8;
    border-style: dashed;
}

.cat-child .category-icon {
    width: 50px;
    height: 50px;
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.cat-child .category-name {
    font-size: 1rem;
}

.category-count {
    font-size: 0.85rem;
    color: #999;
}

/* ---------- 产品卡片 ---------- */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.product-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #eee;
    transition: all 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(43,38,34,0.1);
}

.product-card-link {
    display: block;
    color: inherit;
}

.product-card-link:hover {
    color: inherit;
}

.product-image {
    height: 220px;
    overflow: hidden;
    position: relative;
    background: #f5f5f5;
}

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

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f7efe0;
    color: #bf8a3d;
    font-size: 2rem;
    font-weight: 700;
}

.product-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background: #bf8a3d;
    color: #fff;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.8rem;
}

.product-info {
    padding: 20px;
}

.product-name {
    font-size: 1.1rem;
    color: #2b2622;
    font-weight: 600;
    margin-bottom: 8px;
}

.product-category {
    font-size: 0.8rem;
    color: #bf8a3d;
    margin-bottom: 8px;
    display: inline-block;
}

.product-desc {
    font-size: 0.9rem;
    color: #888;
    line-height: 1.5;
}

/* ---------- 分类筛选 ---------- */
.category-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.filter-btn {
    display: inline-block;
    padding: 8px 22px;
    border: 1px solid var(--color-border);
    border-radius: 30px;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
}

.filter-btn:hover {
    border-color: #bf8a3d;
    color: #bf8a3d;
}

.filter-btn.active {
    background: #bf8a3d;
    color: #fff;
    border-color: #bf8a3d;
}

.filter-parent {
    font-weight: 600;
    border-style: solid;
}

.filter-child {
    padding-left: 34px;
    padding-right: 18px;
    font-size: 0.85rem;
    background: #faf4e8;
    border-style: dashed;
}

.filter-child::before {
    content: "\2514  ";
    color: #bf8a3d;
}

/* ---------- 产品详情 ---------- */
.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-bottom: 50px;
}

.product-gallery {
    position: sticky;
    top: 90px;
    align-self: start;
}

.product-main-image {
    border-radius: 12px;
    overflow: hidden;
    background: #f5f5f5;
    margin-bottom: 15px;
}

.product-main-image img {
    width: 100%;
    height: auto;
    min-height: 350px;
    object-fit: contain;
}

.product-thumbnails {
    display: flex;
    gap: 10px;
}

.product-thumbnails .thumb {
    width: 70px;
    height: 70px;
    object-fit: cover;
    border-radius: 6px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: border-color 0.2s;
}

.product-thumbnails .thumb:hover {
    border-color: #bf8a3d;
}

.product-title {
    font-size: 1.8rem;
    color: #2b2622;
    font-weight: 700;
    margin-bottom: 15px;
}

.product-meta {
    font-size: 0.9rem;
    color: #888;
    margin-bottom: 25px;
}

.product-meta .label {
    color: #999;
}

.product-meta a {
    color: #bf8a3d;
}

.h3-title {
    font-size: 1.2rem;
    color: #2b2622;
    font-weight: 600;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #f7efe0;
}

.product-description {
    margin-bottom: 30px;
}

.product-description p {
    color: #666;
    line-height: 1.8;
}

.product-actions {
    margin-top: 30px;
}

.product-content {
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid #eee;
}

.content-body {
    color: #555;
    line-height: 1.8;
}

.content-body p {
    margin-bottom: 15px;
}

/* ---------- 新闻卡片 ---------- */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 25px;
}

.news-card {
    background: #fff;
    border-radius: 12px;
    border: 1px solid #eee;
    transition: all 0.3s;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(43,38,34,0.1);
}

.news-card-link {
    display: block;
    padding: 25px;
    color: inherit;
}

.news-card-link:hover {
    color: inherit;
}

.news-meta time {
    font-size: 0.85rem;
    color: #999;
}

.news-title {
    font-size: 1.1rem;
    color: #2b2622;
    font-weight: 600;
    margin: 12px 0;
    line-height: 1.5;
}

.news-read-more {
    font-size: 0.9rem;
    color: #bf8a3d;
    font-weight: 500;
}

/* ---------- 新闻列表 ---------- */
.content-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
}

.news-list-item {
    border-bottom: 1px solid #eee;
    padding-bottom: 25px;
    margin-bottom: 25px;
}

.news-list-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.news-list-link {
    display: flex;
    gap: 20px;
    color: inherit;
}

.news-list-link:hover {
    color: inherit;
}

.news-list-image {
    width: 200px;
    min-width: 200px;
    height: 140px;
    border-radius: 8px;
    overflow: hidden;
    background: #f5f5f5;
}

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

.news-list-date {
    display: block;
    font-size: 0.85rem;
    color: #999;
    margin-bottom: 8px;
}

.news-list-title {
    font-size: 1.15rem;
    color: #2b2622;
    font-weight: 600;
    margin-bottom: 10px;
}

.news-list-summary {
    font-size: 0.9rem;
    color: #888;
    line-height: 1.6;
    margin-bottom: 10px;
}

.news-list-more {
    font-size: 0.9rem;
    color: #bf8a3d;
    font-weight: 500;
}

/* ---------- 新闻详情 ---------- */
.news-detail-title {
    font-size: 1.8rem;
    color: #2b2622;
    font-weight: 700;
    margin-bottom: 15px;
}

.news-detail-meta {
    font-size: 0.9rem;
    color: #999;
    margin-bottom: 25px;
}

.news-detail-image {
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 30px;
    max-height: 450px;
}

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

.news-detail-content {
    color: #555;
    line-height: 1.9;
    font-size: 1.05rem;
}

.news-detail-content p {
    margin-bottom: 15px;
}

.news-detail-content img {
    border-radius: 8px;
    margin: 20px 0;
}

.news-pagination {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid #eee;
}

.news-pagination a {
    font-size: 0.95rem;
    max-width: 45%;
    color: #bf8a3d;
}

/* ---------- 侧边栏 ---------- */
.content-sidebar {
    position: sticky;
    top: 90px;
    align-self: start;
}

.sidebar-widget {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 25px;
}

.widget-title {
    font-size: 1.1rem;
    color: #2b2622;
    font-weight: 600;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #f7efe0;
}

.widget-news-list li {
    padding: 10px 0;
    border-bottom: 1px solid #eee;
}

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

.widget-news-list a {
    display: block;
}

.widget-news-title {
    display: block;
    font-size: 0.9rem;
    color: #555;
    margin-bottom: 4px;
    line-height: 1.4;
}

.widget-news-title:hover {
    color: #bf8a3d;
}

.widget-news-date {
    font-size: 0.8rem;
    color: #bbb;
}

/* ---------- FAQ ---------- */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid #eee;
    border-radius: 10px;
    margin-bottom: 12px;
    overflow: hidden;
    transition: box-shadow 0.3s;
}

.faq-item:hover {
    box-shadow: 0 2px 15px rgba(43,38,34,0.06);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 25px;
    background: #fff;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 1rem;
    transition: background 0.2s;
}

.faq-question:hover {
    background: #f8f9fa;
}

.faq-question-text {
    font-size: 1rem;
    color: #2b2622;
    font-weight: 600;
    flex: 1;
    padding-right: 15px;
}

.faq-toggle {
    font-size: 1.5rem;
    color: #bf8a3d;
    font-weight: 700;
    transition: transform 0.3s;
    flex-shrink: 0;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 25px 20px;
}

.faq-answer-content {
    color: #666;
    line-height: 1.8;
}

/* ---------- 联系我们 ---------- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-info-item {
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.contact-icon {
    font-size: 1.5rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f7efe0;
    border-radius: 10px;
    flex-shrink: 0;
}

.contact-label {
    font-size: 0.9rem;
    color: #999;
    margin-bottom: 4px;
    font-weight: 500;
}

.contact-info-item p {
    color: #333;
    font-size: 1rem;
}

/* ---------- 表单 ---------- */
.contact-form {
    margin-top: 20px;
}

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

.form-label {
    display: block;
    font-size: 0.9rem;
    color: #555;
    font-weight: 500;
    margin-bottom: 6px;
}

.form-label .required {
    color: #e74c3c;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 0.95rem;
    color: #333;
    transition: border-color 0.2s, box-shadow 0.2s;
    font-family: inherit;
}

.form-control:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: -1px;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(191,138,61,0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

/* ---------- 关于我们 ---------- */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text {
    padding-left: 20px;
    border-left: 3px solid #bf8a3d;
}

.about-desc {
    color: #555;
    line-height: 1.9;
    margin-bottom: 25px;
    font-size: 1.02rem;
}

.about-desc p {
    margin-bottom: 12px;
}

.about-more {
    display: inline-block;
    color: #bf8a3d;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    padding: 8px 0;
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease;
}

.about-more:hover {
    color: #a0722e;
    border-bottom-color: #bf8a3d;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.stat-item {
    text-align: center;
    padding: 30px 15px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 15px rgba(43,38,34,0.06);
}

.stat-number {
    display: block;
    font-size: 2.2rem;
    font-weight: 800;
    color: #bf8a3d;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.9rem;
    color: #888;
}

/* ---------- 分页 ---------- */
.pagination {
    margin-top: 40px;
    text-align: center;
}

.pagination ul {
    display: inline-flex;
    gap: 5px;
    align-items: center;
}

.pagination li a,
.pagination li span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 38px;
    height: 38px;
    padding: 0 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 0.9rem;
    color: #666;
    transition: all 0.2s;
}

.pagination li a:hover {
    border-color: #bf8a3d;
    color: #bf8a3d;
    background: #faf4e8;
}

.pagination li.active span {
    background: #bf8a3d;
    color: #fff;
    border-color: #bf8a3d;
}

.pagination li.disabled span {
    color: #ccc;
    cursor: not-allowed;
}

.pagination li.ellipsis span {
    border: none;
    color: #999;
}

/* ---------- 空状态 ---------- */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #999;
}

.empty-state p {
    font-size: 1.1rem;
    margin-bottom: 20px;
}

/* ---------- 提示 ---------- */
.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* ---------- Footer ---------- */
.site-footer {
    background: #2b2622;
    color: rgba(255,255,255,0.8);
    padding: 70px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-col h3 {
    color: #fff;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 22px;
    position: relative;
    padding-bottom: 12px;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: #bf8a3d;
    border-radius: 2px;
}

.footer-logo {
    color: #fff;
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.footer-slogan {
    color: #bf8a3d;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-intro {
    font-size: 0.95rem;
    line-height: 1.8;
    color: rgba(255,255,255,0.7);
    margin-bottom: 20px;
}

.footer-phone {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: #bf8a3d;
    color: #fff;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    transition: background 0.2s, transform 0.2s;
}

.footer-phone:hover {
    background: #a87a30;
    transform: translateY(-2px);
    color: #fff;
}

.footer-col p {
    line-height: 1.7;
    font-size: 0.9rem;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: rgba(255,255,255,0.7);
    font-size: 0.95rem;
    transition: color 0.2s, padding-left 0.2s;
    display: inline-block;
}

.footer-col ul li a.sub-link {
    color: rgba(255,255,255,0.55);
    font-size: 0.9rem;
    padding-left: 12px;
}

.footer-col ul li a.sub-link:hover {
    color: rgba(255,255,255,0.9);
    padding-left: 16px;
}

.footer-col .icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    margin-right: 10px;
    font-size: 1rem;
}

.footer-contact ul li {
    display: flex;
    align-items: flex-start;
    color: rgba(255,255,255,0.75);
    font-size: 0.95rem;
    line-height: 1.6;
}

.footer-contact a {
    color: rgba(255,255,255,0.85);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 24px 0;
    text-align: center;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.55);
}

.footer-bottom a {
    color: rgba(255,255,255,0.55);
}

.footer-bottom a:hover { color: #fff; }

/* ---------- Print ---------- */
@media print {
    .site-header, .site-footer, .floating-phone, .hero-bg, .carousel-prev, .carousel-next, .carousel-dots, .mobile-toggle, .breadcrumb, .page-banner, .sidebar-widget, .faq-toggle, .category-filter, .pagination { display: none !important; }
    body { color: #000; background: #fff; font-size: 12pt; }
    .section { padding: 20px 0; }
    .container { max-width: 100%; padding: 0; }
    a[href]::after { content: " (" attr(href) ")"; font-size: 0.8em; color: #666; }
    .hero { padding: 30px 0; }
    .hero-title { font-size: 24pt; }
    img { max-width: 100% !important; page-break-inside: avoid; }
    .card, .product-card, .category-card, .service-card, .advantage-card { break-inside: avoid; border: 1px solid #ddd; box-shadow: none; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 992px) {
    .hero-title { font-size: 2.2rem; }
    .product-detail-grid { grid-template-columns: 1fr; }
    .product-gallery { position: static; }
    .content-layout { grid-template-columns: 1fr; }
    .content-sidebar { position: static; }
    .contact-grid { grid-template-columns: 1fr; }
    .about-content { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 35px; }
}

@media (max-width: 768px) {
    .section { padding: 50px 0; }
    .hero { padding: 80px 0; }
    .hero-title { font-size: 1.8rem; }
    .hero-subtitle { font-size: 1rem; }
    .hero-actions { flex-direction: column; }
    .page-banner { padding: 40px 0; }
    .banner-title { font-size: 1.6rem; }
    .section-title { font-size: 1.5rem; }

    .mobile-toggle { display: flex; }
    .nav-list {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 10px 20px;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    }
    .nav-list.open { display: flex; }
    .nav-list li a { padding: 12px 15px; }

    .categories-grid { grid-template-columns: repeat(2, 1fr); }
    .products-grid { grid-template-columns: 1fr 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .news-list-link { flex-direction: column; }
    .news-list-image { width: 100%; min-width: auto; }
    .about-stats { grid-template-columns: repeat(3, 1fr); }
    .stat-number { font-size: 1.6rem; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
}

@media (max-width: 480px) {
    .categories-grid { grid-template-columns: 1fr 1fr; }
    .products-grid { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: 1fr; }
    .hero-title { font-size: 1.5rem; }
}

/* ============================================================
   新增页面样式（轮播 / 关于详情 / 优势 / 搜索 / 404）
   ============================================================ */

/* ---------- 首页轮播图 ---------- */
.hero-carousel {
    position: relative;
    padding: 0;
    overflow: hidden;
}
.carousel-track {
    position: relative;
    width: 100%;
    height: 520px;
}
.carousel-slide {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.6s ease;
}
.carousel-slide::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: -webkit-linear-gradient(90deg, rgba(43,38,34,0.55) 0%, rgba(43,38,34,0.15) 100%);
    background: linear-gradient(90deg, rgba(43,38,34,0.55) 0%, rgba(43,38,34,0.15) 100%);
}
.carousel-slide.active {
    opacity: 1;
    visibility: visible;
    z-index: 1;
}
.carousel-slide .container {
    position: relative;
    z-index: 2;
}
.carousel-prev, .carousel-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 3;
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 50%;
    background: rgba(255,255,255,0.25);
    color: #fff;
    font-size: 1.2rem;
    cursor: pointer;
    transition: background 0.2s;
}
.carousel-prev:hover, .carousel-next:hover { background: rgba(255,255,255,0.45); }
.carousel-prev { left: 20px; }
.carousel-next { right: 20px; }
.carousel-dots {
    position: absolute;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    gap: 10px;
}
.carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: all 0.2s;
    padding: 0;
}
.carousel-dot.active { background: #fff; width: 28px; border-radius: 6px; }

/* ---------- 关于我们详情 ---------- */
.about-detail {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 40px;
    align-items: start;
}
.about-detail-main .section-title { text-align: left; margin-bottom: 25px; }
.about-detail-main .section-title::after { margin-left: 0; }
.about-content-text { color: #555; line-height: 1.9; font-size: 1.02rem; }
.about-content-text p { margin-bottom: 16px; }
.side-card {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 25px;
    border: 1px solid #eee;
}
.side-card-title { font-size: 1.1rem; color: #2b2622; margin-bottom: 18px; }
.side-contact-list li { margin-bottom: 12px; font-size: 0.92rem; color: #666; }
.side-contact-list .sc-label { color: #999; font-weight: 500; }
.side-card .btn { margin-top: 10px; }

/* 核心优势 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 25px;
}
.advantage-card {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 12px;
    padding: 35px 25px;
    text-align: center;
    transition: all 0.3s;
}
.advantage-card:hover { transform: translateY(-5px); box-shadow: 0 8px 30px rgba(43,38,34,0.1); }
.advantage-icon { font-size: 2.5rem; margin-bottom: 15px; }
.advantage-title { font-size: 1.15rem; color: #2b2622; margin-bottom: 10px; font-weight: 600; }
.advantage-desc { color: #888; font-size: 0.92rem; line-height: 1.6; }

/* 数据实力带 */
.stats-band { padding: 60px 0; }
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    text-align: center;
}
.stat-block { color: #fff; }
.stat-num { display: block; font-size: 2.8rem; font-weight: 800; margin-bottom: 5px; }
.stat-cap { font-size: 1rem; opacity: 0.9; }

/* ---------- 搜索页 ---------- */
.search-form {
    display: flex;
    gap: 12px;
    max-width: 600px;
    margin: 0 auto 40px;
}
.search-input {
    flex: 1;
    padding: 13px 18px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
}
.search-input:focus { outline: 2px solid var(--color-accent); outline-offset: -1px; border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(191,138,61,0.1); }
.search-meta { color: #888; margin-bottom: 25px; font-size: 0.95rem; }
.search-group-title {
    font-size: 1.3rem;
    color: #2b2622;
    margin: 35px 0 20px;
    padding-left: 12px;
    border-left: 4px solid #bf8a3d;
}
.news-list-search { display: flex; flex-direction: column; gap: 0; }
.news-search-item { border-bottom: 1px solid #eee; padding: 14px 0; }
.news-search-item:last-child { border-bottom: none; }
.news-search-link { display: flex; align-items: baseline; gap: 15px; color: inherit; }
.news-search-link:hover { color: inherit; }
.news-search-date { font-size: 0.85rem; color: #999; flex-shrink: 0; }
.news-search-title { font-size: 1rem; color: #2b2622; font-weight: 500; transition: color 0.2s; }
.news-search-link:hover .news-search-title { color: #bf8a3d; }

/* ---------- 404 页面 ---------- */
.error-page { padding: 100px 0; text-align: center; }
.error-inner { max-width: 560px; margin: 0 auto; }
.error-code {
    font-size: 7rem;
    font-weight: 800;
    color: #bf8a3d;
    line-height: 1;
    margin-bottom: 10px;
    text-shadow: 0 4px 20px rgba(191,138,61,0.2);
}
.error-title { font-size: 1.8rem; color: #2b2622; margin-bottom: 15px; }
.error-desc { color: #888; margin-bottom: 30px; font-size: 1.05rem; }
.error-actions { display: flex; gap: 15px; justify-content: center; margin-bottom: 35px; }
.error-search { display: flex; gap: 10px; max-width: 420px; margin: 0 auto; }

/* 轮播响应式 */
@media (max-width: 992px) {
    .carousel-track { height: 420px; }
    .about-detail { grid-template-columns: 1fr; }
    .stats-row { grid-template-columns: repeat(2, 1fr); gap: 30px; }
}
@media (max-width: 768px) {
    .carousel-track { height: 340px; }
    .carousel-prev, .carousel-next { width: 38px; height: 38px; }
    .hero-title { font-size: 1.8rem; }
    .stat-num { font-size: 2rem; }
}
@media (max-width: 480px) {
    .carousel-track { height: 280px; }
    .stats-row { grid-template-columns: 1fr 1fr; }
}

/* ============================================================
   铜门用户优化：字号放大 / 信任条 / 服务承诺 / 浮动电话
   ============================================================ */

/* 字号整体放大，照顾 40+ 用户视力 */
/* 已在 html 基础中设置 font-size: 17px; */

/* 信任条 */
.trust-bar {
    background: #2b2622;
    color: #fff;
    padding: 50px 0 40px;
}
.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.trust-item {
    background: rgba(255,255,255,0.04);
    border-radius: 12px;
    padding: 28px 16px 22px;
    text-align: center;
    border-top: 3px solid #bf8a3d;
    transition: transform 0.25s, background 0.25s;
}
.trust-item:hover {
    transform: translateY(-4px);
    background: rgba(255,255,255,0.08);
}
.trust-number {
    font-size: 2.6rem;
    font-weight: 800;
    color: #bf8a3d;
    line-height: 1.1;
    display: block;
    margin-bottom: 6px;
    letter-spacing: 1px;
}
.trust-unit {
    font-size: 1rem;
    font-weight: 600;
    color: #bf8a3d;
}
.trust-label {
    display: block;
    font-size: 1rem;
    color: rgba(255,255,255,0.85);
    margin-top: 8px;
    letter-spacing: 1px;
}

/* 服务承诺 */
.services-section { background: #fff; }
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 25px;
}
.service-card {
    background: #faf4e8;
    border: 1px solid #efe2c8;
    border-radius: 12px;
    padding: 35px 25px;
    text-align: center;
    transition: all 0.3s;
}
.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(43,38,34,0.1);
    border-color: #bf8a3d;
}
.service-icon { font-size: 2.6rem; margin-bottom: 15px; }
.service-title { font-size: 1.15rem; color: #2b2622; margin-bottom: 10px; font-weight: 600; }
.service-desc { color: #777; font-size: 0.92rem; line-height: 1.6; }

/* 浮动电话按钮 */
.floating-phone {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 9999;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 18px;
    background: #bf8a3d;
    color: #fff;
    border-radius: 40px;
    box-shadow: 0 6px 20px rgba(43,38,34,0.3);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.25s;
}
.floating-phone:hover { background: #2b2622; color: #fff; transform: translateY(-2px); }
.fp-icon { font-size: 1.3rem; }
.fp-text { white-space: nowrap; }

/* 响应式：移动端浮动按钮变圆形图标，信任条/服务变两列 */
@media (max-width: 768px) {
    .trust-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .trust-number { font-size: 2rem; }
    .trust-item { padding: 20px 12px 18px; }
    .services-grid { grid-template-columns: 1fr 1fr; }
    .floating-phone {
        right: 14px;
        bottom: 14px;
        padding: 0;
        width: 52px;
        height: 52px;
        border-radius: 50%;
        justify-content: center;
    }
    .fp-text { display: none; }
}
@media (max-width: 480px) {
    .services-grid { grid-template-columns: 1fr; }
}