/* 主题变量 */
:root {
    --primary-color: #c41e3a;
    --primary-dark: #8b1538;
    --secondary-color: #d4af37;
    --text-color: #333;
    --text-light: #666;
    --text-lighter: #999;
    --bg-color: #f8f9fa;
    --white: #ffffff;
    --border-color: #e5e5e5;
    --shadow: 0 2px 15px rgba(0,0,0,0.1);
    --shadow-hover: 0 5px 25px rgba(0,0,0,0.15);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

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

/* 通用按钮 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(196, 30, 58, 0.3);
}

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

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

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

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

.btn-block {
    width: 100%;
}

/* 文本居中 */
.text-center {
    text-align: center;
}

/* ========== 头部导航 ========== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.site-header.scrolled {
    box-shadow: 0 2px 20px rgba(0,0,0,0.15);
}

.header-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 0;
}

.site-logo a {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.company-name-item {
    display: flex;
    flex-direction: column;
}

.company-name-item h1 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 3px;
    line-height: 1.2;
}

.company-name-item p {
    font-size: 12px;
    color: var(--text-light);
    line-height: 1.2;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-link {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-color);
    position: relative;
    padding: 8px 0;
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

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

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    border-radius: 3px;
    transition: var(--transition);
}

/* 移动端菜单 */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
}

.mobile-menu.active {
    display: block;
}

.mobile-menu-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(5px);
}

.mobile-menu-content {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 280px;
    background: var(--white);
    box-shadow: -2px 0 15px rgba(0,0,0,0.1);
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

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

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

.mobile-menu-header h3 {
    font-size: 20px;
    font-weight: 600;
}

.mobile-menu-close {
    background: none;
    font-size: 24px;
    color: var(--text-color);
}

.mobile-nav-menu {
    padding: 20px 0;
}

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

.mobile-nav-menu a {
    display: block;
    padding: 15px 20px;
    color: var(--text-color);
    font-size: 16px;
    font-weight: 500;
}

.mobile-nav-menu a:hover {
    background: var(--bg-color);
    color: var(--primary-color);
}

/* ========== 轮播图 ========== */
.hero-banner {
    margin-top: 90px;
    height: 600px;
    overflow: hidden;
    position: relative;
}

.carousel-container {
    width: 100%;
    height: 100%;
    position: relative;
}

.banner-swiper {
    width: 100%;
    height: 100%;
}

.banner-item {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(0,0,0,0.4), rgba(0,0,0,0.2));
    pointer-events: none;
}

.banner-content {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;      /* 垂直居中 */
    align-items: flex-start;      /* 靠左对齐 */
    padding-left: 20px;          /* 往中间偏一点（从左侧移入画面） */     
    padding-top: 140px;   
    text-align: left;
}

.banner-title {
    font-size: 3rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 1rem;
    text-shadow: 3px 3px 6px rgba(0,0,0,0.8);
    line-height: 1.2;
}

.banner-subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 2rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.8);
    line-height: 1.4;
}

/* 左右切换按钮样式 */
.swiper-button-prev,
.swiper-button-next {
    color: var(--white) !important;
    width: 50px !important;
    height: 50px !important;
    background: rgba(255,255,255,0.2) !important;
    border-radius: 50% !important;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    margin-top: 0 !important;
    top: 50% !important;
    transform: translateY(-50%);
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    z-index: 10 !important;
}

.swiper-button-prev {
    left: 20px !important;
}

.swiper-button-next {
    right: 20px !important;
}

.swiper-button-prev:hover,
.swiper-button-next:hover {
    background: rgba(255,255,255,0.3) !important;
    transform: translateY(-50%) scale(1.1);
}

/* 完全隐藏 Swiper 默认箭头（::after 伪元素） */
.banner-swiper .swiper-button-prev::after,
.banner-swiper .swiper-button-next::after,
.swiper-button-prev::after,
.swiper-button-next::after {
    display: none !important;
    content: '' !important;
    font-size: 0 !important;
    width: 0 !important;
    height: 0 !important;
    opacity: 0 !important;
    visibility: hidden !important;
}

/* 隐藏 Swiper 自动生成的 SVG 箭头图标 */
.banner-swiper .swiper-button-prev svg,
.banner-swiper .swiper-button-next svg,
.swiper-button-prev svg,
.swiper-button-next svg,
.swiper-navigation-icon {
    display: none !important;
    opacity: 0 !important;
    visibility: hidden !important;
    width: 0 !important;
    height: 0 !important;
}

/* 确保自定义图标正常显示 */
.swiper-button-prev i,
.swiper-button-next i {
    font-size: 20px;
    color: var(--white);
    display: block !important;
    line-height: 1;
    position: relative;
    z-index: 2;
}

/* 指示器样式（外部显示） */
.swiper-pagination {
    bottom: 20px !important;
    position: absolute !important;
    width: auto !important;
    left: 50% !important;
    transform: translateX(-50%) !important;
    display: flex !important;
    gap: 8px !important;
    justify-content: center !important;
}

.swiper-pagination-bullet {
    background: var(--white) !important;
    opacity: 0.5 !important;
    width: 12px !important;
    height: 12px !important;
    transition: all 0.3s ease !important;
    border-radius: 50% !important;
    cursor: pointer !important;
}

.swiper-pagination-bullet-active {
    opacity: 1 !important;
    transform: scale(1.2);
    background: var(--primary-color) !important;
}

/* ========== 通用部分样式 ========== */
.section {
    padding: 80px 0;
}

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

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 15px;
}

.title-divider {
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    margin: 0 auto 20px;
    border-radius: 2px;
}

.section-desc {
    font-size: 18px;
    color: var(--text-light);
}

/* ========== 关于我们 ========== */
.about-section {
    background: var(--bg-color);
}

/* 兼容旧类名（其他页面如仍引用） */
.about-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 20px;
}

/* 新版公司简介布局：上概述+图，下产品卡片全宽 */
.about-layout {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.about-intro {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    align-items: start;
}

.about-intro-text p {
    font-size: 16px;
    line-height: 1.85;
    color: var(--text-light);
    margin-bottom: 16px;
}

.about-subtitle {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-color);
    margin: 24px 0 12px;
    padding-left: 12px;
    border-left: 4px solid var(--primary-color);
}

.about-lead {
    font-size: 15px !important;
    color: var(--text-color) !important;
    font-weight: 500;
    background: rgba(196, 30, 58, 0.06);
    padding: 12px 16px;
    border-radius: 8px;
    margin: 0 0 24px;
}

/* 声明块：紧跟公司宗旨之后 */
.about-declaration {
    margin-top: 24px;
}

.about-declaration .about-subtitle {
    margin-top: 0;
}

/* 声明区：标题在外，内容同属一个背景面板 */
.about-declaration-module {
    margin-top: 56px;
    padding-top: 36px;
    border-top: 1px solid var(--border-color);
}

.about-declaration-module > .about-subtitle {
    margin-top: 0;
    margin-bottom: 20px;
}

/* 统一背景模块：导语、标题、产品卡、底部说明都在此面板内 */
.about-declaration-panel {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 28px 28px 24px;
    box-shadow: var(--shadow);
}

.about-declaration-panel .about-products {
    margin-top: 0;
}

.about-declaration-panel .about-notice {
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px dashed var(--border-color);
    background: transparent;
    border-left: none;
    border-right: none;
    border-bottom: none;
    border-radius: 0;
    padding-left: 0;
    padding-right: 0;
    padding-bottom: 0;
}

/* 面板内的产品小卡片：相对统一背景再突出一层 */
.about-declaration-panel .about-product-card {
    background: #fafbfc;
    box-shadow: none;
}

.about-declaration-panel .about-product-card:hover {
    background: var(--white);
    box-shadow: 0 8px 22px rgba(196, 30, 58, 0.1);
}

/* 公司简介配图：完整展示，避免 cover 裁切遮挡内容 */
.about-intro-media {
    display: flex;
    align-items: flex-start;
    justify-content: center;
}

.about-intro-media img {
    width: 100%;
    height: auto;
    max-height: none;
    object-fit: contain;
    object-position: top center;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    display: block;
}

.company-values {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    padding: 28px;
    border-radius: var(--border-radius);
    margin-top: 24px;
}

.company-values h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.company-values p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--white);
    margin: 0;
}

.about-products-head {
    text-align: center;
    margin-bottom: 28px;
}

.about-products-head h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 8px;
}

.about-products-head p {
    font-size: 14px;
    color: var(--text-lighter);
    margin: 0;
}

.about-products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.about-product-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px 22px;
    transition: var(--transition);
}

.about-product-card:hover {
    border-color: rgba(196, 30, 58, 0.35);
    box-shadow: 0 8px 22px rgba(196, 30, 58, 0.1);
    transform: translateY(-2px);
}

.about-product-card-top {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 14px;
}

.about-product-num {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    font-size: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-product-name {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.45;
    color: var(--text-color);
    margin: 4px 0 0;
}

.about-product-meta {
    margin: 0;
    display: grid;
    gap: 8px;
}

.about-product-meta > div {
    display: grid;
    grid-template-columns: 72px 1fr;
    gap: 8px;
    font-size: 13px;
    line-height: 1.5;
}

.about-product-meta dt {
    color: var(--text-lighter);
    font-weight: 500;
}

.about-product-meta dd {
    margin: 0;
    color: var(--text-color);
    word-break: break-all;
}

.about-product-note {
    margin: 12px 0 0;
    font-size: 13px;
    color: var(--primary-color);
    font-weight: 500;
}

.about-product-raw {
    margin: 8px 0 0;
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

.about-notice {
    background: var(--white);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    padding: 28px 30px;
}

.about-notice p {
    font-size: 14px;
    line-height: 1.85;
    color: var(--text-light);
    margin-bottom: 14px;
}

.about-notice p:last-child {
    margin-bottom: 0;
}

.about-notice-contact {
    color: var(--text-color) !important;
    font-weight: 600;
    font-size: 15px !important;
}

.about-notice-sign {
    color: var(--text-lighter) !important;
    font-size: 13px !important;
    text-align: right;
}

.about-image {
    display: flex;
    align-items: flex-start;
    justify-content: center;
}

/* 长图/证书类图片完整展示，避免 cover 裁剪 */
.about-image img {
    width: 100%;
    max-height: 600px;
    height: auto;
    object-fit: contain;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    cursor: pointer;
}

.placeholder-image {
    width: 100%;
    height: 450px;
    background: var(--bg-color);
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-lighter);
}

.placeholder-image i {
    font-size: 60px;
    margin-bottom: 15px;
}

/* ========== 产品展示 ========== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.large-grid {
    grid-template-columns: repeat(4, 1fr);
}

.product-card {
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.product-image {
    position: relative;
    height: 250px;
    overflow: hidden;
    background: var(--bg-color);
}

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

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

.product-image .placeholder-image {
    height: 100%;
    margin: 0;
    border-radius: 0;
}

.product-image .placeholder-image i {
    font-size: 50px;
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

.btn-view {
    background: var(--white);
    color: var(--primary-color);
    padding: 10px 20px;
    border-radius: 50px;
    font-weight: 500;
    transform: translateY(20px);
    transition: var(--transition);
}

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

.product-info {
    padding: 25px;
}

.product-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 10px;
}

.product-desc {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-category {
    margin-top: 15px;
    font-size: 14px;
    color: var(--primary-color);
}

.product-category i {
    margin-right: 5px;
}

/* ========== 资质证书 ========== */
.certificates-section {
    background: var(--bg-color);
}

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

.certificate-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.certificate-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.certificate-image {
    height: 300px;
    margin-bottom: 20px;
    overflow: hidden;
    border-radius: var(--border-radius);
}

.certificate-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: var(--bg-color);
    cursor: pointer;
}

.certificate-card h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-color);
}

/* ========== 联系我们 ========== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.info-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.info-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.info-content h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 8px;
}

.info-content p {
    font-size: 15px;
    color: var(--text-light);
}

.contact-form-wrapper {
    background: var(--white);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

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

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 15px;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.1);
}

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

/* ========== 页脚 ========== */
.site-footer {
    background: linear-gradient(135deg, #2c3e50, #34495e);
    color: var(--white);
    padding: 60px 0 20px;
}

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

.footer-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-desc {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255,255,255,0.8);
    margin-bottom: 20px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

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

.footer-links a {
    color: rgba(255,255,255,0.8);
    font-size: 14px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 5px;
}

.footer-contact li {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    font-size: 14px;
    color: rgba(255,255,255,0.8);
}

.footer-contact i {
    flex-shrink: 0;
    width: 20px;
    color: var(--secondary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    margin-bottom: 5px;
}

/* ========== 返回顶部 ========== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    font-size: 20px;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

/* ========== 页面头部横幅 ========== */
.page-header-banner {
    position: relative;
    height: 300px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 90px;
    overflow: hidden;
}

.page-header-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120"><path d="M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z" opacity=".25" fill="%23ffffff"></path><path d="M0,0V15.81C13,36.92,27.64,56.86,47.69,72.05,99.41,111.27,165,111,224.58,91.58c31.15-10.15,60.09-26.07,89.67-39.8,40.92-19,84.73-46,130.83-49.67,36.26-2.85,70.9,9.42,98.6,31.56,31.77,25.39,62.32,62,103.63,73,40.44,10.79,81.35-6.69,119.13-24.28s75.16-39,116.92-43.05c59.73-5.85,113.28,22.88,168.9,38.84,30.2,8.66,59,6.17,87.09-7.5,22.43-10.89,48-26.93,60.65-49.24V0Z" opacity=".5" fill="%23ffffff"></path><path d="M0,0V5.63C149.93,59,314.09,71.32,475.83,42.57c43-7.64,84.23-20.12,127.61-26.46,59-8.63,112.48,12.24,165.56,35.4C827.93,77.22,886,95.24,951.2,90c86.53-7,172.46-45.71,248.8-84.81V0Z" fill="%23ffffff"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.1;
}

.page-header-banner .container {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
}

.page-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
}

.breadcrumb {
    font-size: 16px;
}

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

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

.breadcrumb .separator {
    margin: 0 10px;
    color: rgba(255,255,255,0.6);
}

/* ========== 分类筛选 ========== */
.category-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 50px;
}

.category-item {
    padding: 10px 25px;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
}

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

/* ========== 产品详情 ========== */
.product-detail-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.product-detail-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.placeholder-image-large {
    width: 100%;
    height: 500px;
    background: var(--bg-color);
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-lighter);
}

.placeholder-image-large i {
    font-size: 80px;
    margin-bottom: 20px;
}

.product-detail-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 20px;
}

.product-detail-subtitle {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 30px;
    line-height: 1.6;
}

.product-meta {
    padding: 15px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 30px;
}

.meta-label {
    font-weight: 600;
    color: var(--text-color);
}

.meta-value {
    color: var(--primary-color);
}

.product-description h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 15px;
}

.product-description p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-light);
}

.product-actions {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

/* 产品规格 */
.product-specs {
    background: var(--bg-color);
    padding: 40px;
    border-radius: var(--border-radius);
    margin-bottom: 60px;
}

.specs-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 30px;
    text-align: center;
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}

.spec-item {
    background: var(--white);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.spec-item.full-width {
    grid-column: 1 / -1;
}

.spec-label {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 10px;
}

.spec-value {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-light);
}

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

.related-products .section-title {
    font-size: 28px;
    margin-bottom: 40px;
}

/* 联系CTA */
.contact-cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    padding: 80px 0;
}

.contact-cta {
    text-align: center;
    color: var(--white);
}

.contact-cta h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
}

.contact-cta p {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* 电话咨询选择弹窗 */
.phone-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.phone-modal[hidden] {
    display: none !important;
}

.phone-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
}

.phone-modal-dialog {
    position: relative;
    width: 100%;
    max-width: 420px;
    background: var(--white);
    border-radius: 16px;
    padding: 32px 28px 24px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
    animation: phoneModalIn 0.25s ease;
}

@keyframes phoneModalIn {
    from {
        opacity: 0;
        transform: translateY(12px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.phone-modal-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 50%;
    background: var(--bg-color);
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
}

.phone-modal-close:hover {
    background: var(--border-color);
    color: var(--text-color);
}

.phone-modal-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-color);
    margin: 0 0 8px;
    text-align: center;
}

.phone-modal-desc {
    margin: 0 0 22px;
    text-align: center;
    color: var(--text-light);
    font-size: 14px;
}

.phone-modal-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.phone-modal-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-color);
    transition: var(--transition);
}

.phone-modal-item:hover {
    border-color: var(--primary-color);
    background: rgba(196, 30, 58, 0.04);
    box-shadow: 0 4px 14px rgba(196, 30, 58, 0.12);
}

.phone-modal-item-icon {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.phone-modal-item-text {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.phone-modal-item-label {
    font-size: 12px;
    color: var(--text-lighter);
}

.phone-modal-item-number {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.phone-modal-item-action {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-color);
    flex-shrink: 0;
}

/* button 形态的 .btn 与 a 保持一致 */
button.btn {
    font-family: inherit;
    appearance: none;
    -webkit-appearance: none;
}

/* 无数据提示 */
.no-data {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--text-lighter);
}

.no-data i {
    font-size: 60px;
    margin-bottom: 20px;
}

.no-data p {
    font-size: 18px;
}

.no-data-full {
    text-align: center;
    padding: 100px 20px;
    color: var(--text-lighter);
}

.no-data-full i {
    font-size: 80px;
    margin-bottom: 20px;
}

.no-data-full h3 {
    font-size: 24px;
    color: var(--text-light);
    margin-bottom: 15px;
}

.no-data-full p {
    font-size: 16px;
    margin-bottom: 30px;
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .nav-menu {
        gap: 25px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-intro {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .about-products-grid {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-banner {
        height: 450px;
    }
    
    .banner-content {
        padding-left: 20px;
        padding-right: 20px;
        padding-bottom: 80px;
        align-items: center;
        text-align: center;
    }
    
    .banner-title {
        font-size: 2rem;
    }
    
    .banner-subtitle {
        font-size: 1rem;
    }
    
    .swiper-button-prev,
    .swiper-button-next {
        width: 40px !important;
        height: 40px !important;
    }
    
    .swiper-button-prev {
        left: 10px !important;
    }
    
    .swiper-button-next {
        right: 10px !important;
    }
    
    .swiper-button-prev i,
    .swiper-button-next i {
        font-size: 16px !important;
    }
    
    .swiper-pagination {
        bottom: 10px !important;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .products-grid,
    .large-grid,
    .certificates-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .product-detail-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .specs-grid {
        grid-template-columns: 1fr;
    }
    
    .product-actions {
        flex-direction: column;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .logo-img {
        width: 50px;
        height: 50px;
    }
    
    .logo-text h1 {
        font-size: 16px;
    }
    
    .logo-text p {
        font-size: 11px;
    }
    
    .hero-banner {
        height: 350px;
    }
    
    .banner-content {
        padding-left: 15px;
        padding-right: 15px;
        padding-bottom: 60px;
        align-items: center;
        text-align: center;
    }
    
    .banner-title {
        font-size: 1.5rem;
    }
    
    .banner-subtitle {
        font-size: 0.9rem;
        margin-bottom: 1.5rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .swiper-button-prev,
    .swiper-button-next {
        width: 35px !important;
        height: 35px !important;
    }
    
    .swiper-button-prev {
        left: 5px !important;
    }
    
    .swiper-button-next {
        right: 5px !important;
    }
    
    .swiper-button-prev i,
    .swiper-button-next i {
        font-size: 14px !important;
    }
    
    .swiper-pagination {
        bottom: 5px !important;
    }
    
    .swiper-pagination-bullet {
        width: 8px !important;
        height: 8px !important;
    }
    
    .page-title {
        font-size: 32px;
    }
}