/* ============================================
   鸿泽泵业 - 全局样式
   工业科技风格
   ============================================ */

/* ---------- 重置与基础 ---------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #0a3d7c;
    --primary-light: #1565c0;
    --primary-dark: #062a5a;
    --accent: #c62828;
    --accent-light: #e53935;
    --metal: #546e7a;
    --metal-light: #78909c;
    --bg-dark: #1a1a2e;
    --bg-gray: #f5f7fa;
    --bg-light: #fafbfc;
    --text-primary: #263238;
    --text-secondary: #546e7a;
    --text-light: #90a4ae;
    --border: #e0e6ed;
    --shadow-sm: 0 2px 8px rgba(10, 61, 124, 0.08);
    --shadow-md: 0 4px 20px rgba(10, 61, 124, 0.12);
    --shadow-lg: 0 8px 40px rgba(10, 61, 124, 0.16);
    --max-width: 1200px;
    --header-height: 80px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-primary);
    background: #fff;
    overflow-x: hidden;
}

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

ul, ol {
    list-style: none;
}

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

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ---------- 顶部信息栏 ---------- */
.top-bar {
    background: var(--primary-dark);
    color: rgba(255, 255, 255, 0.8);
    font-size: 13px;
    height: 36px;
    line-height: 36px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-left span {
    margin-right: 24px;
}

.top-bar-left i {
    margin-right: 6px;
    color: var(--accent-light);
}

.top-bar-right a {
    margin-left: 16px;
    font-size: 13px;
}

.top-bar-right a:hover {
    color: #fff;
}

/* ---------- 头部导航 ---------- */
.header {
    background: #fff;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
}

.header.scrolled {
    height: 64px;
    box-shadow: var(--shadow-md);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: bold;
    font-size: 20px;
    letter-spacing: -1px;
    position: relative;
    overflow: hidden;
}

.logo-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s ease;
}

.logo-icon:hover::before {
    left: 100%;
}

.logo-text h1 {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 1px;
    line-height: 1.2;
}

.logo-text p {
    font-size: 11px;
    color: var(--text-secondary);
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* 导航菜单 */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-menu > li {
    position: relative;
}

.nav-menu > li > a {
    display: block;
    padding: 8px 20px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    position: relative;
    transition: color 0.3s ease;
}

.nav-menu > li > a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-menu > li:hover > a,
.nav-menu > li.active > a {
    color: var(--primary);
}

.nav-menu > li:hover > a::after,
.nav-menu > li.active > a::after {
    width: 30px;
}

/* 下拉菜单 */
.nav-menu .dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    min-width: 180px;
    background: #fff;
    box-shadow: var(--shadow-lg);
    border-radius: 8px;
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 100;
    border-top: 3px solid var(--primary);
}

.nav-menu > li:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.nav-menu .dropdown li a {
    display: block;
    padding: 10px 20px;
    font-size: 14px;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.nav-menu .dropdown li a:hover {
    color: var(--primary);
    background: var(--bg-gray);
    padding-left: 28px;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--primary);
    transition: all 0.3s ease;
    border-radius: 2px;
}

/* ---------- Banner 区域 ---------- */
.banner {
    position: relative;
    height: 520px;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    overflow: hidden;
}

.banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}

.banner::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(229, 57, 53, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.banner .container {
    height: 100%;
    display: flex;
    align-items: center;
    position: relative;
    z-index: 2;
}

.banner-content {
    max-width: 650px;
    color: #fff;
}

.banner-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    font-size: 13px;
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
    letter-spacing: 1px;
}

.banner-title {
    font-size: 46px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.banner-title span {
    color: var(--accent-light);
}

.banner-desc {
    font-size: 16px;
    line-height: 1.8;
    opacity: 0.85;
    margin-bottom: 36px;
    max-width: 520px;
}

.banner-buttons {
    display: flex;
    gap: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 32px;
    font-size: 15px;
    font-weight: 500;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    outline: none;
    letter-spacing: 1px;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 15px rgba(198, 40, 40, 0.3);
}

.btn-primary:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(198, 40, 40, 0.4);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
}

/* Banner 装饰图形 */
.banner-visual {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    width: 420px;
    height: 420px;
    opacity: 0.9;
}

.banner-pump {
    width: 100%;
    height: 100%;
    position: relative;
}

.pump-body {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    background: linear-gradient(145deg, #2a4a7a, #1a3a6a);
    border-radius: 50%;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.3),
        inset 0 2px 10px rgba(255, 255, 255, 0.1);
}

.pump-body::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: linear-gradient(145deg, #c62828, #b71c1c);
    border-radius: 50%;
    box-shadow: 0 4px 15px rgba(198, 40, 40, 0.4);
}

.pump-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: pulse-ring 3s ease-out infinite;
}

.pump-ring:nth-child(1) {
    width: 260px;
    height: 260px;
    animation-delay: 0s;
}

.pump-ring:nth-child(2) {
    width: 320px;
    height: 320px;
    animation-delay: 1s;
}

.pump-ring:nth-child(3) {
    width: 380px;
    height: 380px;
    animation-delay: 2s;
}

@keyframes pulse-ring {
    0% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(0.9);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

/* ---------- 通用区块标题 ---------- */
.section {
    padding: 80px 0;
}

.section-gray {
    background: var(--bg-gray);
}

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

.section-subtitle {
    display: inline-block;
    font-size: 13px;
    color: var(--accent);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 12px;
    font-weight: 500;
}

.section-title {
    font-size: 34px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.section-desc {
    font-size: 15px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

.section-title-line {
    display: inline-block;
    width: 50px;
    height: 3px;
    background: var(--accent);
    margin: 0 auto 20px;
    position: relative;
}

.section-title-line::before,
.section-title-line::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 20px;
    height: 1px;
    background: var(--text-light);
    transform: translateY(-50%);
}

.section-title-line::before {
    left: -30px;
}

.section-title-line::after {
    right: -30px;
}

/* ---------- 核心优势 ---------- */
.advantages {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.advantage-item {
    background: #fff;
    padding: 36px 28px;
    border-radius: 8px;
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.advantage-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary);
    transform: scaleX(0);
    transition: transform 0.4s ease;
    transform-origin: left;
}

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

.advantage-item:hover::before {
    transform: scaleX(1);
}

.advantage-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 28px;
    transition: all 0.4s ease;
}

.advantage-item:hover .advantage-icon {
    transform: rotateY(180deg);
}

.advantage-item h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.advantage-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ---------- 产品中心 ---------- */
.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.product-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s ease;
    border: 1px solid var(--border);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.product-img {
    position: relative;
    height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.product-img::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(10, 61, 124, 0.1) 100%);
    pointer-events: none;
    transition: all 0.4s ease;
    z-index: 1;
}

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

.product-card:hover .product-img::after {
    background: linear-gradient(180deg, transparent 20%, rgba(10, 61, 124, 0.25) 100%);
}

.product-img::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(10, 61, 124, 0.85) 0%, rgba(21, 101, 192, 0.85) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 1;
}

.product-card:hover .product-img::before {
    opacity: 1;
}

.product-img-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 12px;
    background: var(--accent);
    color: #fff;
    font-size: 12px;
    font-weight: 500;
    border-radius: 4px;
    z-index: 3;
    letter-spacing: 0.5px;
}

.product-icon {
    font-size: 56px;
    color: var(--primary);
    transition: all 0.4s ease;
    position: relative;
    z-index: 2;
}

.product-card:hover .product-icon {
    color: #fff;
    transform: scale(1.1);
}

.product-view-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    padding: 10px 24px;
    background: #fff;
    color: var(--primary);
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    opacity: 0;
    transition: all 0.4s ease;
    z-index: 2;
    white-space: nowrap;
}

.product-card:hover .product-view-btn {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.product-info {
    padding: 20px;
}

.product-info h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    transition: color 0.3s ease;
}

.product-card:hover .product-info h3 {
    color: var(--primary);
}

.product-info p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ---------- 关于我们（首页） ---------- */
.about-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
}

.about-image-main {
    width: 100%;
    height: 420px;
    position: relative;
    overflow: hidden;
}

.about-image-main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.about-image-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 140px;
    height: 140px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
    text-align: center;
}

.about-image-badge .num {
    font-size: 42px;
    font-weight: 700;
    line-height: 1;
}

.about-image-badge .label {
    font-size: 13px;
    margin-top: 4px;
    letter-spacing: 1px;
}

.about-content .section-header {
    text-align: left;
    margin-bottom: 24px;
}

.about-content .section-subtitle {
    letter-spacing: 2px;
}

.about-content .section-title {
    font-size: 30px;
    margin-bottom: 12px;
}

.about-text {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 24px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin: 32px 0;
    padding: 28px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.stat-item {
    text-align: center;
}

.stat-item .num {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-item .label {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ---------- 应用领域 ---------- */
.applications-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.application-card {
    position: relative;
    height: 280px;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
}

.application-bg {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.application-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.application-card:hover .application-bg img {
    transform: scale(1.08);
}

.application-icon {
    font-size: 64px;
    color: rgba(255, 255, 255, 0.2);
    transition: all 0.5s ease;
}

.application-card:hover .application-icon {
    color: rgba(255, 255, 255, 0.4);
    transform: rotate(10deg) scale(1.2);
}

.application-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 24px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 100%);
    color: #fff;
    transition: all 0.4s ease;
}

.application-card:hover .application-overlay {
    padding-bottom: 32px;
}

.application-overlay h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.application-overlay p {
    font-size: 13px;
    opacity: 0.8;
    line-height: 1.6;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.application-card:hover .application-overlay p {
    max-height: 60px;
}

/* ---------- 新闻动态 ---------- */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.news-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s ease;
    border: 1px solid var(--border);
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.news-img {
    height: 180px;
    background: linear-gradient(135deg, #e8eef5 0%, #d0dae8 100%);
    position: relative;
    overflow: hidden;
}

.news-date-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--accent);
    color: #fff;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 500;
    z-index: 2;
}

.news-content {
    padding: 24px;
}

.news-content h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.5;
    transition: color 0.3s ease;
}

.news-card:hover .news-content h3 {
    color: var(--primary);
}

.news-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 16px;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--text-light);
}

.news-more {
    color: var(--primary);
    font-weight: 500;
    font-size: 13px;
}

.news-more:hover {
    color: var(--accent);
}

/* ---------- CTA 区域 ---------- */
.cta-section {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 30px 30px;
}

.cta-section .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 2;
}

.cta-content h2 {
    font-size: 28px;
    color: #fff;
    margin-bottom: 8px;
    font-weight: 600;
}

.cta-content p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 15px;
}

.cta-btn {
    background: #fff;
    color: var(--primary);
    padding: 14px 36px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.cta-btn:hover {
    background: var(--accent);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

/* ---------- 页脚 ---------- */
.footer {
    background: #0f1720;
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-col h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 24px;
    position: relative;
    padding-bottom: 12px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--accent);
}

.footer-about .logo-text h1 {
    color: #fff;
    font-size: 20px;
}

.footer-about .logo-text p {
    color: rgba(255, 255, 255, 0.5);
}

.footer-about p {
    font-size: 14px;
    line-height: 1.8;
    margin-top: 16px;
}

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

.footer-links li a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    transition: all 0.3s ease;
    display: inline-block;
}

.footer-links li a:hover {
    color: #fff;
    padding-left: 6px;
}

.footer-contact li {
    font-size: 14px;
    margin-bottom: 14px;
    display: flex;
    gap: 10px;
    line-height: 1.7;
}

.footer-contact li i {
    color: var(--accent-light);
    flex-shrink: 0;
    margin-top: 3px;
}

.footer-bottom {
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

/* ---------- 内页 Banner ---------- */
.page-banner {
    height: 260px;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}

.page-banner .container {
    position: relative;
    z-index: 2;
}

.page-banner h1 {
    font-size: 36px;
    color: #fff;
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.breadcrumb {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.7);
}

.breadcrumb a:hover {
    color: #fff;
}

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

/* ---------- 内页主体布局 ---------- */
.page-main {
    padding: 60px 0;
    background: var(--bg-gray);
    min-height: 600px;
}

.page-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 30px;
}

/* 侧边栏 */
.sidebar {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    height: fit-content;
}

.sidebar-title {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff;
    padding: 24px 20px;
    font-size: 20px;
    font-weight: 600;
    letter-spacing: 1px;
}

.sidebar-menu li a {
    display: block;
    padding: 14px 20px;
    font-size: 15px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
    transition: all 0.3s ease;
    position: relative;
}

.sidebar-menu li:last-child a {
    border-bottom: none;
}

.sidebar-menu li a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--accent);
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.sidebar-menu li a:hover,
.sidebar-menu li.active a {
    color: var(--primary);
    background: var(--bg-gray);
    padding-left: 28px;
}

.sidebar-menu li a:hover::before,
.sidebar-menu li.active a::before {
    transform: scaleY(1);
}

/* 主内容区 */
.main-content {
    background: #fff;
    border-radius: 8px;
    padding: 40px;
    box-shadow: var(--shadow-sm);
    min-height: 500px;
}

.content-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--border);
    position: relative;
}

.content-title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background: var(--accent);
}

.content-body {
    font-size: 15px;
    line-height: 2;
    color: var(--text-primary);
}

.content-body p {
    margin-bottom: 16px;
    text-indent: 2em;
}

.content-body img {
    max-width: 100%;
    margin: 20px auto;
    border-radius: 4px;
}

/* ---------- 产品列表页 ---------- */
.product-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* ---------- 产品详情页 ---------- */
.product-detail-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.product-detail-img {
    background: var(--bg-gray);
    border-radius: 12px;
    height: 380px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(10, 61, 124, 0.12);
    border: 1px solid var(--border);
}

.product-detail-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.product-detail-img::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent 50%, rgba(10, 61, 124, 0.05) 100%);
    pointer-events: none;
    z-index: 1;
}

.product-detail-info h2 {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.product-detail-info .product-model {
    display: inline-block;
    padding: 6px 16px;
    background: var(--primary);
    color: #fff;
    border-radius: 4px;
    font-size: 14px;
    margin-bottom: 20px;
}

.product-params {
    margin-top: 24px;
}

.product-params h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
    padding-left: 12px;
    border-left: 4px solid var(--accent);
}

.param-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.param-item {
    display: flex;
    padding: 10px 14px;
    background: var(--bg-gray);
    border-radius: 4px;
    font-size: 14px;
}

.param-item .param-label {
    color: var(--text-secondary);
    margin-right: 8px;
    font-weight: 500;
    white-space: nowrap;
}

.param-item .param-value {
    color: var(--text-primary);
    font-weight: 500;
}

.product-detail-desc {
    margin-top: 40px;
}

.product-detail-desc h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
    padding-left: 12px;
    border-left: 4px solid var(--accent);
}

.product-detail-desc p {
    font-size: 15px;
    line-height: 2;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

/* ---------- 图片展示页 ---------- */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.gallery-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 4/3;
}

.gallery-item .gallery-img {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.gallery-item .gallery-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.gallery-item:hover .gallery-img img {
    transform: scale(1.08);
}

.gallery-item .gallery-icon {
    font-size: 60px;
    color: rgba(255, 255, 255, 0.3);
    transition: all 0.5s ease;
}

.gallery-item:hover .gallery-icon {
    color: rgba(255, 255, 255, 0.5);
    transform: scale(1.2);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 100%);
    color: #fff;
    transform: translateY(100%);
    transition: transform 0.4s ease;
}

.gallery-item:hover .gallery-overlay {
    transform: translateY(0);
}

.gallery-overlay h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 6px;
}

.gallery-overlay p {
    font-size: 13px;
    opacity: 0.8;
}

/* ---------- 联系我们页 ---------- */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.contact-info-box {
    background: var(--bg-gray);
    padding: 32px;
    border-radius: 8px;
}

.contact-info-box h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.contact-info-list li {
    display: flex;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
}

.contact-info-list li:last-child {
    border-bottom: none;
}

.contact-info-icon {
    width: 44px;
    height: 44px;
    background: var(--primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    flex-shrink: 0;
}

.contact-info-text h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.contact-info-text p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.contact-form-box h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-primary);
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 14px;
    font-family: inherit;
    transition: all 0.3s ease;
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(10, 61, 124, 0.1);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.contact-map {
    height: 360px;
    background: var(--bg-gray);
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    color: var(--text-light);
    border: 1px solid var(--border);
}

/* ---------- 荣誉展示页 ---------- */
.honor-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 30px;
}

.honor-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s ease;
    border: 1px solid var(--border);
}

.honor-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.honor-card-img {
    width: 100%;
    height: 260px;
    overflow: hidden;
}

.honor-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

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

.honor-card-title {
    padding: 16px 20px;
    text-align: center;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    border-top: 1px solid var(--border);
}

/* ---------- 企业资质页 ---------- */
.cert-image-box {
    text-align: center;
    margin: 30px 0;
}

.cert-image-box img {
    max-width: 600px;
    width: 100%;
    margin: 0 auto;
    border: 4px solid #fff;
    box-shadow: var(--shadow-md);
    border-radius: 4px;
}

.service-icon-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 30px;
}

.service-icon-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 20px;
    background: var(--bg-gray);
    border-radius: 8px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.service-icon-item:hover {
    background: #fff;
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.service-icon-item .icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    flex-shrink: 0;
}

.service-icon-item .text {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
    line-height: 1.5;
}

/* ---------- 服务理念页 ---------- */
.service-cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 30px;
}

.service-card {
    background: #fff;
    border-radius: 8px;
    padding: 32px 28px;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s ease;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
    transform: scaleX(0);
    transition: transform 0.4s ease;
    transform-origin: left;
}

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

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 28px;
    margin-bottom: 20px;
    transition: all 0.4s ease;
}

.service-card:hover .service-card-icon {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(10, 61, 124, 0.3);
}

.service-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.service-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ---------- 响应式设计 ---------- */
@media (max-width: 1024px) {
    .advantages,
    .products-grid,
    .applications-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .banner-visual {
        display: none;
    }
    
    .banner-content {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 64px;
    }
    
    .top-bar {
        display: none;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 16px 0;
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.mobile-open {
        display: flex;
    }
    
    .nav-menu > li {
        width: 100%;
    }
    
    .nav-menu > li > a {
        padding: 12px 24px;
    }
    
    .nav-menu .dropdown {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        border-radius: 0;
        border-top: none;
        background: var(--bg-gray);
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .banner {
        height: 420px;
    }
    
    .banner-title {
        font-size: 30px;
    }
    
    .banner-desc {
        font-size: 14px;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 26px;
    }
    
    .advantages,
    .products-grid,
    .applications-grid,
    .news-grid,
    .product-list,
    .gallery-grid,
    .honor-grid,
    .service-cards-grid,
    .service-icon-list {
        grid-template-columns: 1fr;
    }
    
    .about-section {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .about-image-main {
        height: 300px;
    }
    
    .cta-section .container {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
    
    .page-layout {
        grid-template-columns: 1fr;
    }
    
    .product-detail-header {
        grid-template-columns: 1fr;
    }
    
    .contact-layout {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .main-content {
        padding: 24px;
    }
    
    .param-list {
        grid-template-columns: 1fr;
    }
    
    .page-banner {
        height: 200px;
    }
    
    .page-banner h1 {
        font-size: 28px;
    }
}

/* ---------- 动画 ---------- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 返回顶部 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    z-index: 999;
    font-size: 20px;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--accent);
    transform: translateY(-4px);
}