/* ===================================
   上海百酷信息科技 - 现代化网站样式
   版本: 2.0
   =================================== */

/* CSS变量定义 */
:root {
    --primary-color: #00529b;
    --primary-dark: #003d73;
    --primary-light: #1a7fd1;
    --secondary-color: #00a0e9;
    --accent-color: #ff6b35;
    --text-dark: #333;
    --text-gray: #666;
    --text-light: #999;
    --bg-light: #f8f9fa;
    --bg-gray: #f0f2f5;
    --white: #fff;
    --border-color: #e5e5e5;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --transition: all 0.3s ease;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
}

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

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul, ol {
    list-style: none;
}

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

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

/* 容器 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 通用区块样式 */
.section {
    padding: 80px 0;
}

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

.section-header.left {
    text-align: left;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-gray);
}

.section-line {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    margin: 20px auto 0;
    border-radius: 2px;
}

.section-header.left .section-line {
    margin: 20px 0 0;
}

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

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(0, 82, 155, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 82, 155, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.5);
}

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

.btn-outline-dark {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

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

.btn-white:hover {
    background: var(--bg-light);
}

.btn-outline-white {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

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

/* 头部导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

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

.logo a {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.site-logo {
    height: 48px;
    width: auto;
    display: block;
    flex-shrink: 0;
}

.site-logo-footer {
    height: 36px;
}

img.is-placeholder-img,
img[src*="placeholder.png"] {
    object-fit: contain;
    background: #eef2f7;
}

.news-card-image img.is-placeholder-img,
.news-card-image img[src*="placeholder.png"] {
    object-fit: contain;
    padding: 24px;
    box-sizing: border-box;
}

.case-detail-image img.is-placeholder-img,
.case-detail-image img[src*="placeholder.png"] {
    object-fit: contain;
    padding: 40px;
    box-sizing: border-box;
    background: #eef2f7;
}

.logo-text {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 0.02em;
    white-space: nowrap;
    line-height: 1;
}

.logo-sub {
    font-size: 0.7rem;
    color: var(--text-gray);
    letter-spacing: 1px;
}

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

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

.nav-list > li > a {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 10px 15px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-dark);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.nav-list > li > a:hover,
.nav-list > li > a.active {
    color: var(--primary-color);
    background: rgba(0, 82, 155, 0.05);
}

.dropdown > a .fa-chevron-down {
    font-size: 0.7rem;
    transition: var(--transition);
}

.dropdown:hover > a .fa-chevron-down {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 10px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    font-size: 0.9rem;
    color: var(--text-dark);
    transition: var(--transition);
}

.dropdown-menu li a:hover {
    background: var(--bg-light);
    color: var(--primary-color);
    padding-left: 25px;
}

.dropdown-menu li a i {
    color: var(--primary-color);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.phone-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.phone-link i,
.contact-widget .fa-phone-alt,
.service-btn.phone .fa-phone-alt {
    display: inline-block;
    transform: rotate(90deg);
}

.phone-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 82, 155, 0.3);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-dark);
    transition: var(--transition);
}

/* Hero Slider */
.hero-slider {
    position: relative;
    height: 100vh;
    min-height: 700px;
    overflow: hidden;
}

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

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease, visibility 0.8s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slide.active {
    opacity: 1;
    visibility: visible;
}

.slide-content {
    text-align: center;
    color: var(--white);
    max-width: 800px;
    padding: 0 20px;
    transform: translateY(30px);
    opacity: 0;
    transition: all 0.8s ease 0.3s;
}

.slide.active .slide-content {
    transform: translateY(0);
    opacity: 1;
}

.slide-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.slide-desc {
    font-size: 1.25rem;
    margin-bottom: 35px;
    opacity: 0.9;
}

.slide-btns {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.slider-dots {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active,
.dot:hover {
    background: var(--white);
}

.slider-arrows {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 30px;
    pointer-events: none;
    z-index: 10;
}

.arrow {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    color: var(--white);
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: auto;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

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

/* 产品服务 */
.products-section {
    background: var(--bg-light);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 35px 25px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.product-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--white);
}

.product-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.product-card p {
    font-size: 0.9rem;
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 20px;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: var(--primary-color);
    font-weight: 500;
    font-size: 0.9rem;
}

.product-link:hover {
    color: var(--primary-dark);
    gap: 10px;
}

/* 统计数据 */
.stats-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 50px 50px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    position: relative;
    z-index: 1;
}

.stat-item {
    text-align: center;
    color: var(--white);
}

.stat-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: rgba(255,255,255,0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    backdrop-filter: blur(10px);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* 客户案例 */
.cases-section {
    background: var(--white);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.case-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

.case-image {
    position: relative;
    height: 180px;
    overflow: hidden;
}

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

.case-card:hover .case-image img {
    transform: scale(1.1);
}

.case-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 82, 155, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

.view-btn {
    padding: 10px 24px;
    background: var(--white);
    color: var(--primary-color);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    transform: translateY(20px);
    transition: var(--transition);
}

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

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

.case-content {
    padding: 20px;
}

.case-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.case-content p {
    font-size: 0.85rem;
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.case-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0, 82, 155, 0.1);
    color: var(--primary-color);
    font-size: 0.75rem;
    border-radius: 50px;
}

/* 客户Logo墙 */
.clients-section {
    background: linear-gradient(180deg, #ffffff 0%, #f0f7ff 55%, #ffffff 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.clients-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 15% 30%, rgba(0, 82, 155, 0.05) 0%, transparent 42%),
        radial-gradient(circle at 85% 70%, rgba(0, 82, 155, 0.04) 0%, transparent 40%);
    pointer-events: none;
}

.clients-section .container {
    position: relative;
    z-index: 1;
}

.clients-section .section-title {
    color: var(--text-dark);
}

.clients-section .section-line {
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
}

.clients-slider {
    overflow: hidden;
    position: relative;
    padding: 8px 0;
}

.clients-slider:hover .clients-track {
    animation-play-state: paused;
}

.clients-slider-fade {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 90px;
    z-index: 2;
    pointer-events: none;
}

.clients-slider-fade--left {
    left: 0;
    background: linear-gradient(90deg, #f7fbff 20%, rgba(247, 251, 255, 0));
}

.clients-slider-fade--right {
    right: 0;
    background: linear-gradient(270deg, #f7fbff 20%, rgba(247, 251, 255, 0));
}

.clients-track {
    display: flex;
    gap: 24px;
    width: max-content;
    animation: scroll 36s linear infinite;
}

@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.client-logo {
    flex-shrink: 0;
    width: 168px;
    height: 92px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(145deg, #ffffff 0%, #f8fbff 100%);
    border: 1px solid rgba(0, 82, 155, 0.1);
    border-radius: 16px;
    padding: 14px 20px;
    box-shadow: 0 10px 24px rgba(0, 82, 155, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.client-logo:hover {
    transform: translateY(-4px) scale(1.03);
    border-color: rgba(0, 82, 155, 0.2);
    box-shadow: 0 16px 36px rgba(0, 82, 155, 0.14);
}

.client-logo img {
    max-width: 100%;
    max-height: 48px;
    object-fit: contain;
    filter: none;
    opacity: 1;
    transition: transform 0.3s ease;
}

.client-logo:hover img {
    transform: scale(1.04);
}

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

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text {
    font-size: 1rem;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 25px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 30px;
}

.about-features li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-dark);
}

.about-features li i {
    color: var(--primary-color);
}

.about-image {
    position: relative;
}

.image-frame {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.image-frame img {
    width: 100%;
    height: auto;
}

.experience-badge {
    position: absolute;
    bottom: -20px;
    left: 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    padding: 20px 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.experience-badge .years {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
}

.experience-badge .text {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* 新闻资讯 */
.news-section {
    background: var(--white);
}

.news-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 30px;
}

.news-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

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

.news-card.featured .news-image {
    height: 240px;
}

.news-image {
    position: relative;
    height: 180px;
    overflow: hidden;
}

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

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

.news-category {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--primary-color);
    color: var(--white);
    padding: 5px 15px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 500;
}

.news-content {
    padding: 25px;
}

.news-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    margin-bottom: 15px;
}

.news-date .day {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.news-date .month {
    font-size: 0.7rem;
    color: var(--text-gray);
}

.news-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 12px;
    line-height: 1.4;
}

.news-card p {
    font-size: 0.9rem;
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 15px;
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: var(--primary-color);
    font-weight: 500;
    font-size: 0.9rem;
}

.read-more:hover {
    gap: 10px;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.news-item {
    display: flex;
    gap: 15px;
    padding: 20px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.news-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.news-date-small {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 55px;
    height: 55px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
}

.news-date-small .day {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.news-date-small .month {
    font-size: 0.65rem;
    color: var(--text-gray);
}

.news-info h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.news-info h4 a {
    color: var(--text-dark);
}

.news-info h4 a:hover {
    color: var(--primary-color);
}

.news-info p {
    font-size: 0.85rem;
    color: var(--text-gray);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></svg>');
    background-size: 100px 100px;
    opacity: 0.5;
}

.cta-content {
    text-align: center;
    color: var(--white);
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.cta-content p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 35px;
}

.cta-btns {
    display: flex;
    gap: 15px;
    justify-content: center;
}

/* 页脚 */
.footer {
    background: #1a1a2e;
    color: var(--white);
}

.footer-top {
    padding: 70px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
}

.footer-widget h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 25px;
    color: var(--white);
    position: relative;
    padding-bottom: 10px;
}

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

.about-widget p {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-logo .logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
}

.footer-social {
    display: flex;
    gap: 10px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: var(--transition);
}

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

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

.footer-widget ul li a {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
    transition: var(--transition);
}

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

.contact-widget ul li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 15px;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
}

.contact-widget ul li i {
    color: var(--primary-color);
    margin-top: 3px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom-content p {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
}

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

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 90px;
    right: 30px;
    width: 45px;
    height: 45px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
}

/* 百酷智能客服嵌入按钮品牌色对齐 */
#bk-kefu-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light)) !important;
    box-shadow: 0 8px 24px rgba(0, 82, 155, 0.35) !important;
    font-family: inherit !important;
}

#bk-kefu-btn:hover {
    background: var(--primary-dark) !important;
}

/* 在线客服（旧版，智能客服加载成功后由 JS 隐藏） */
.online-service {
    position: fixed;
    bottom: 100px;
    right: 30px;
    z-index: 998;
}

.service-toggle {
    width: 55px;
    height: 55px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.4rem;
    box-shadow: 0 4px 15px rgba(0, 82, 155, 0.3);
    position: relative;
    transition: var(--transition);
}

.service-toggle:hover {
    transform: scale(1.1);
}

.service-toggle .badge {
    position: absolute;
    top: -2px;
    right: -2px;
    width: 18px;
    height: 18px;
    background: var(--accent-color);
    border-radius: 50%;
    font-size: 0.65rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-panel {
    position: absolute;
    bottom: 70px;
    right: 0;
    width: 320px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    max-height: min(520px, calc(100vh - 140px));
    overflow: hidden;
}

.service-panel-chat {
    width: 360px;
}

.service-panel.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.service-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    flex-shrink: 0;
}

.service-header h4 {
    color: var(--white);
    font-size: 1rem;
    font-weight: 600;
}

.service-body {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    padding: 0;
    background: #f8fafc;
}

.service-panel:not(.service-panel-chat) .service-body {
    padding: 20px;
}

.welcome-msg {
    background: var(--white);
    padding: 15px;
    border-radius: var(--radius-md);
    border-left: 3px solid var(--primary-color);
}

.welcome-msg p {
    font-size: 0.9rem;
    color: var(--text-gray);
    line-height: 1.6;
}

/* 百酷采购助手对话区 */
.chat-messages {
    flex: 1;
    min-height: 180px;
    max-height: 260px;
    overflow-y: auto;
    padding: 14px 14px 8px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.chat-msg-user {
    display: flex;
    justify-content: flex-end;
}

.chat-msg-bot {
    display: flex;
    justify-content: flex-start;
}

.chat-bubble {
    max-width: 88%;
    padding: 10px 12px;
    border-radius: 12px;
    font-size: 0.85rem;
    line-height: 1.65;
    color: var(--text-dark);
    word-break: break-word;
}

.chat-msg-user .chat-bubble {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    border-bottom-right-radius: 4px;
}

.chat-msg-bot .chat-bubble {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-bottom-left-radius: 4px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}

.chat-links {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 8px;
    max-width: 88%;
}

.chat-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.78rem;
    color: var(--primary-color);
    text-decoration: none;
    padding: 6px 10px;
    background: rgba(0, 82, 155, 0.06);
    border-radius: 8px;
    transition: var(--transition);
}

.chat-link:hover {
    background: rgba(0, 82, 155, 0.12);
    color: var(--primary-dark);
}

.chat-quick {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 0 14px 10px;
    flex-shrink: 0;
}

.chat-quick-btn {
    padding: 5px 10px;
    font-size: 0.75rem;
    color: var(--primary-color);
    background: var(--white);
    border: 1px solid rgba(0, 82, 155, 0.2);
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    line-height: 1.4;
}

.chat-quick-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.chat-input-row {
    display: flex;
    gap: 8px;
    padding: 0 14px 8px;
    flex-shrink: 0;
}

.chat-input-row input {
    flex: 1;
    min-width: 0;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    outline: none;
    transition: var(--transition);
}

.chat-input-row input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 82, 155, 0.1);
}

.chat-send-btn {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border: none;
    border-radius: var(--radius-md);
    background: var(--primary-color);
    color: var(--white);
    cursor: pointer;
    transition: var(--transition);
}

.chat-send-btn:hover {
    background: var(--primary-dark);
}

.chat-disclaimer {
    padding: 0 14px 10px;
    font-size: 0.68rem;
    line-height: 1.5;
    color: var(--text-gray);
    flex-shrink: 0;
}

.close-btn {
    width: 30px;
    height: 30px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 0.8rem;
    transition: var(--transition);
}

.close-btn:hover {
    background: rgba(255,255,255,0.3);
}

.service-footer {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding: 15px 20px;
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
    background: var(--white);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.service-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
}

.service-btn.phone {
    background: var(--bg-light);
    color: var(--text-dark);
}

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

.service-btn.message {
    background: var(--primary-color);
    color: var(--white);
}

.service-btn.message:hover {
    background: var(--primary-dark);
}

/* ===================================
   响应式设计
   =================================== */

@media (max-width: 1200px) {
    .products-grid,
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--white);
        transition: var(--transition);
        overflow-y: auto;
    }

    .nav.active {
        left: 0;
    }

    .nav-list {
        flex-direction: column;
        padding: 20px;
        gap: 0;
    }

    .nav-list > li {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-list > li > a {
        padding: 15px 0;
        justify-content: space-between;
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding: 0;
        display: none;
    }

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

    .phone-link span {
        display: none;
    }

    .hero-slider {
        height: auto;
        min-height: 600px;
    }

    .slide-title {
        font-size: 2rem;
    }

    .slide-desc {
        font-size: 1rem;
    }

    .slide-btns {
        flex-direction: column;
        gap: 10px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-image {
        order: -1;
    }

    .image-frame {
        max-width: 400px;
        margin: 0 auto;
    }

    .news-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }

    .footer-bottom-content {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .products-grid,
    .cases-grid,
    .stats-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .about-features {
        grid-template-columns: 1fr;
    }

    .clients-track {
        animation-duration: 20s;
    }

    .service-panel {
        width: calc(100vw - 60px);
        right: -15px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .section {
        padding: 50px 0;
    }

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

    .cta-content h2 {
        font-size: 1.75rem;
    }

    .cta-btns {
        flex-direction: column;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* 工具类 */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.hidden {
    display: none !important;
}

.visible {
    visibility: visible !important;
}

.invisible {
    visibility: hidden !important;
}

.clearfix::after {
    content: '';
    display: table;
    clear: both;
}
/* ===================================
   补充样式 - 用于新页面
   =================================== */

/* 页面横幅 */
.page-banner {
    padding: 150px 0 80px;
    position: relative;
    text-align: center;
}

.banner-content h1 {
    font-size: 3rem;
    color: #fff;
    margin-bottom: 15px;
    font-weight: 700;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: rgba(255,255,255,0.8);
}

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

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

/* 联系信息卡片 */
.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.contact-info-card {
    background: #fff;
    padding: 35px 25px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.contact-info-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.info-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #00529b, #0077cc);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.5rem;
    color: #fff;
}

.contact-info-card h3 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: #333;
}

.contact-info-card p {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.7;
}

/* 联系表单 */
.contact-form-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 50px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
}

.form-group label span {
    color: #e74c3c;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: #00529b;
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 82, 155, 0.1);
}

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

.btn-submit {
    width: 100%;
    padding: 15px;
    font-size: 1rem;
}

/* 地图 */
.map-container {
    background: #f8f9fa;
    border-radius: 12px;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    overflow: hidden;
    position: relative;
}

.map-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.map-container .map-link {
    display: block;
    width: 100%;
    height: 100%;
    text-decoration: none;
}

.map-placeholder {
    text-align: center;
    color: #999;
}

.map-placeholder i {
    font-size: 3rem;
    margin-bottom: 10px;
}

.map-info h4 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: #333;
}

.map-info p {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.map-info p i {
    color: #00529b;
}

/* 产品页面样式 */
.product-overview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.product-overview-content .lead {
    font-size: 1.2rem;
    color: #00529b;
    font-weight: 500;
    margin-bottom: 20px;
}

.product-overview-content p {
    font-size: 1rem;
    color: #666;
    line-height: 1.8;
    margin-bottom: 15px;
}

.product-overview-subtitle {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1e293b;
    margin: 24px 0 14px;
}

.product-overview-list {
    list-style: none;
    margin: 0 0 18px;
    padding: 0;
    display: grid;
    gap: 12px;
}

.product-overview-list li {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.75;
    padding: 12px 14px;
    background: #f8fafc;
    border-radius: 10px;
    border-left: 3px solid var(--primary-color);
}

.product-overview-list li strong {
    color: #334155;
}

/* 询比价产品概述 - 增强版布局 */
.product-overview--bidding {
    background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

.product-overview-intro {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 48px;
    align-items: center;
    margin-bottom: 36px;
}

.product-overview-intro-text .lead {
    font-size: 1.2rem;
    color: #00529b;
    font-weight: 500;
    margin-bottom: 20px;
    line-height: 1.75;
}

.product-overview-intro-text p {
    font-size: 1rem;
    color: #64748b;
    line-height: 1.85;
    margin-bottom: 0;
}

.product-overview-visual-frame {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow:
        0 24px 60px rgba(0, 82, 155, 0.14),
        0 0 0 1px rgba(0, 82, 155, 0.06);
    background: #fff;
}

.product-overview-visual-frame::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 82, 155, 0.08) 0%, transparent 55%);
    pointer-events: none;
    z-index: 1;
}

.product-overview-visual-frame img {
    display: block;
    width: 100%;
    height: auto;
}

.product-ai-panel {
    padding: 36px 32px 32px;
    border-radius: 24px;
    background:
        linear-gradient(135deg, rgba(0, 82, 155, 0.06) 0%, rgba(255, 255, 255, 0.9) 45%, rgba(0, 82, 155, 0.04) 100%);
    border: 1px solid rgba(0, 82, 155, 0.1);
    box-shadow: 0 16px 48px rgba(0, 82, 155, 0.06);
    margin-bottom: 36px;
}

.product-overview-flow {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.overview-flow-card {
    background: #fff;
    border: 1px solid #e8eef5;
    border-radius: 18px;
    padding: 24px 22px;
    box-shadow: 0 8px 28px rgba(15, 23, 42, 0.04);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.overview-flow-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 82, 155, 0.16);
    box-shadow: 0 16px 40px rgba(0, 82, 155, 0.1);
}

.overview-flow-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(0, 82, 155, 0.14), rgba(0, 82, 155, 0.04));
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    margin-bottom: 16px;
}

.overview-flow-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0 0 10px;
}

.overview-flow-card p {
    margin: 0;
    font-size: 0.92rem;
    color: #64748b;
    line-height: 1.75;
}

.product-ai-panel-head {
    text-align: center;
    max-width: 560px;
    margin: 0 auto 28px;
}

.product-ai-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    margin-bottom: 12px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--primary-color);
    background: rgba(0, 82, 155, 0.1);
    border-radius: 50px;
}

.product-ai-panel-head h3 {
    font-size: 1.45rem;
    font-weight: 700;
    color: #1e293b;
    margin: 0 0 8px;
}

.product-ai-panel-head p {
    margin: 0;
    font-size: 0.95rem;
    color: #64748b;
    line-height: 1.7;
}

.product-ai-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.product-ai-card {
    background: #fff;
    border: 1px solid rgba(0, 82, 155, 0.08);
    border-radius: 16px;
    padding: 20px 18px;
    box-shadow: 0 6px 20px rgba(15, 23, 42, 0.04);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.product-ai-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(0, 82, 155, 0.1);
}

.product-ai-card-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    margin-bottom: 14px;
}

.product-ai-card h4 {
    font-size: 0.98rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0 0 8px;
}

.product-ai-card p {
    margin: 0;
    font-size: 0.88rem;
    color: #64748b;
    line-height: 1.7;
}

.product-ai-summary {
    margin: 24px 0 0;
    padding-top: 20px;
    border-top: 1px solid rgba(0, 82, 155, 0.1);
    text-align: center;
    font-size: 0.95rem;
    color: #475569;
    line-height: 1.8;
}

.product-overview-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.product-overview-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    font-size: 0.88rem;
    font-weight: 500;
    color: #334155;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 50px;
    box-shadow: 0 4px 14px rgba(15, 23, 42, 0.04);
}

.product-overview-tag i {
    color: var(--primary-color);
    font-size: 0.85rem;
}

.product-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 25px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: #333;
}

.highlight-item i {
    color: #27ae60;
}

.product-overview-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}

/* 功能特色 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: #fff;
    padding: 35px 25px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #00529b, #0077cc);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.5rem;
    color: #fff;
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #333;
}

.feature-card p {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.7;
}

/* 应用价值 */
.value-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.value-item {
    text-align: center;
    padding: 30px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.value-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.value-number {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, #00529b, #0077cc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 10px;
}

.value-label {
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
}

.value-item p {
    font-size: 0.9rem;
    color: #666;
}

/* 技术/系统优势 - 美化样式 */
.tech-content {
    max-width: 1000px;
    margin: 0 auto;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 50px;
}

.tech-item {
    background: linear-gradient(135deg, #fff 0%, #f8f9fa 100%);
    border-radius: var(--radius-lg);
    padding: 30px 25px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid rgba(0,82,155,0.1);
    position: relative;
    overflow: hidden;
}

.tech-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.tech-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.12);
}

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

.tech-item .tech-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: all 0.3s ease;
}

.tech-item .tech-icon i {
    font-size: 1.8rem;
    color: #fff;
}

.tech-item:hover .tech-icon {
    transform: scale(1.1);
    box-shadow: 0 8px 20px rgba(0,82,155,0.3);
}

.tech-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.tech-item p {
    font-size: 0.9rem;
    color: var(--text-gray);
    line-height: 1.6;
}

/* 技术架构/系统特点列表 */
.tech-architecture {
    background: linear-gradient(135deg, #fff 0%, #f8f9fa 100%);
    border-radius: var(--radius-lg);
    padding: 35px 40px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    border: 1px solid rgba(0,82,155,0.1);
}

.tech-architecture h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid rgba(0,82,155,0.1);
}

.tech-architecture ul {
    list-style: none;
}

.tech-architecture li {
    padding: 12px 0;
    padding-left: 30px;
    position: relative;
    border-bottom: 1px dashed rgba(0,0,0,0.1);
    font-size: 0.95rem;
    color: var(--text-gray);
    line-height: 1.6;
}

.tech-architecture li:last-child {
    border-bottom: none;
}

.tech-architecture li i {
    position: absolute;
    left: 0;
    top: 14px;
    color: var(--primary-color);
    font-size: 1rem;
}

/* 系统特点特色样式 */
.tech-features {
    background: linear-gradient(135deg, #fff 0%, #f8f9fa 100%);
    border-radius: var(--radius-lg);
    padding: 35px 40px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    border: 1px solid rgba(0,82,155,0.1);
    margin-top: 40px;
}

.tech-features h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid rgba(0,82,155,0.1);
}

.features-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 15px;
    background: rgba(0,82,155,0.03);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(0,82,155,0.08);
    transform: translateX(5px);
}

.feature-item i {
    color: var(--primary-color);
    font-size: 1.1rem;
    margin-top: 3px;
}

.feature-item span {
    font-size: 0.95rem;
    color: var(--text-gray);
    line-height: 1.5;
}

/* 应用场景样式 */
.scenario-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-top: 30px;
}

.scenario-item {
    background: linear-gradient(135deg, #fff 0%, #f8f9fa 100%);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    border: 1px solid rgba(0,82,155,0.1);
    transition: all 0.3s ease;
    text-align: center;
}

.scenario-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.12);
}

.scenario-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.scenario-item h5 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.scenario-item p {
    font-size: 0.9rem;
    color: var(--text-gray);
    line-height: 1.6;
}

/* 流程步骤样式 - 竞价/招标流程 */
.process-flow {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.process-flow::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: calc(100% - 80px);
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
    z-index: 0;
}

.process-step {
    display: flex;
    gap: 40px;
    margin-bottom: 50px;
    position: relative;
    z-index: 1;
}

.process-step:last-child {
    margin-bottom: 0;
}

.process-step:nth-child(even) {
    flex-direction: row-reverse;
}

.step-number {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    box-shadow: 0 8px 25px rgba(0,82,155,0.3);
    flex-shrink: 0;
    position: relative;
}

.step-number::after {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border: 2px dashed var(--primary-light);
    border-radius: 50%;
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.step-content {
    flex: 1;
    background: linear-gradient(135deg, #fff 0%, #f8f9fa 100%);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    border: 1px solid rgba(0,82,155,0.1);
    transition: all 0.3s ease;
}

.step-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}

.step-content h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid rgba(0,82,155,0.1);
}

.step-content p {
    font-size: 0.95rem;
    color: var(--text-gray);
    line-height: 1.8;
}

/* 响应式适配 */
@media (max-width: 1024px) {
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-flow::before {
        left: 40px;
    }

    .process-step,
    .process-step:nth-child(even) {
        flex-direction: row;
        padding-left: 20px;
    }

    .step-number {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
}

@media (max-width: 768px) {
    .tech-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .features-list {
        grid-template-columns: 1fr;
    }

    .scenario-list {
        grid-template-columns: 1fr;
    }

    .tech-architecture,
    .tech-features {
        padding: 25px;
    }

    .process-flow::before {
        display: none;
    }

    .process-step {
        padding-left: 0;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .step-content {
        width: 100%;
    }
}

/* 案例筛选 */
.filter-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 10px 25px;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 50px;
    font-size: 0.9rem;
    color: #666;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background: #00529b;
    border-color: #00529b;
    color: #fff;
}

/* 案例列表 */
.cases-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.case-detail-card {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 0;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.case-detail-image {
    position: relative;
    height: 100%;
    min-height: 350px;
}

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

.case-category {
    position: absolute;
    top: 20px;
    left: 20px;
    background: #00529b;
    color: #fff;
    padding: 6px 15px;
    border-radius: 50px;
    font-size: 0.8rem;
}

.case-detail-content {
    padding: 40px;
}

.case-detail-content h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #333;
}

.case-desc {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.8;
    margin-bottom: 25px;
}

.case-results {
    display: flex;
    gap: 30px;
    margin-bottom: 25px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
}

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

.result-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: #00529b;
    margin-bottom: 5px;
}

.result-label {
    font-size: 0.8rem;
    color: #666;
}

/* 响应式补充 */
@media (max-width: 992px) {
    .contact-info-grid,
    .value-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-form-grid {
        grid-template-columns: 1fr;
    }

    .product-overview-grid {
        grid-template-columns: 1fr;
    }

    .product-overview-intro {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .product-overview-flow {
        grid-template-columns: 1fr;
    }

    .product-ai-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .product-ai-panel {
        padding: 28px 20px 24px;
    }

    .case-detail-card {
        grid-template-columns: 1fr;
    }

    .case-detail-image {
        min-height: 200px;
    }

    .case-results {
        flex-wrap: wrap;
        gap: 15px;
    }
}

@media (max-width: 768px) {
    .contact-info-grid,
    .features-grid,
    .value-grid {
        grid-template-columns: 1fr;
    }

    .product-ai-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .filter-tabs {
        justify-content: flex-start;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 10px;
    }

    .case-detail-content {
        padding: 25px;
    }
}