/* ========================================
   北京尧图网络科技有限公司 - 全局样式
   域名：hrptzy.com
   ======================================== */

/* CSS Reset & 基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1a56db;
    --secondary-color: #0e3a8a;
    --accent-color: #f59e0b;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

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

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

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    color: var(--text-dark);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    margin: 15px auto 0;
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto 50px;
}

/* ========================================
   导航栏样式 - 独特侧边固定导航
   ======================================== */
.navbar {
    position: fixed;
    left: 0;
    top: 0;
    width: 280px;
    height: 100vh;
    background: linear-gradient(180deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    z-index: 1000;
    transition: var(--transition);
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.navbar-header {
    padding: 30px 25px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

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

.navbar-logo img {
    width: 50px;
    height: 50px;
    border-radius: 8px;
    object-fit: cover;
}

.navbar-logo-text {
    color: #fff;
    font-size: 1.3rem;
    font-weight: 700;
    line-height: 1.3;
}

.navbar-logo-text span {
    display: block;
    font-size: 0.75rem;
    font-weight: 400;
    opacity: 0.8;
    margin-top: 3px;
}

.navbar-menu {
    padding: 20px 0;
}

.navbar-menu ul {
    display: flex;
    flex-direction: column;
}

.navbar-menu li {
    margin: 5px 0;
}

.navbar-menu a {
    display: flex;
    align-items: center;
    padding: 14px 25px;
    color: rgba(255,255,255,0.85);
    font-size: 0.95rem;
    border-left: 4px solid transparent;
    transition: var(--transition);
}

.navbar-menu a:hover,
.navbar-menu a.active {
    background: rgba(255,255,255,0.1);
    color: #fff;
    border-left-color: var(--accent-color);
    padding-left: 30px;
}

.navbar-menu a i {
    margin-right: 12px;
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
}

.navbar-footer {
    padding: 20px 25px;
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: auto;
}

.navbar-contact {
    color: rgba(255,255,255,0.7);
    font-size: 0.85rem;
    line-height: 1.8;
}

.navbar-contact strong {
    color: #fff;
    display: block;
    margin-bottom: 5px;
}

/* 移动端汉堡菜单按钮 */
.hamburger-btn {
    display: none;
    position: fixed;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    z-index: 1001;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 6px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.hamburger-btn span {
    display: block;
    width: 24px;
    height: 3px;
    background: #fff;
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger-btn.active span:nth-child(2) {
    opacity: 0;
}

.hamburger-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* 主内容区域 - 适配侧边导航 */
.main-content {
    margin-left: 280px;
    min-height: 100vh;
    transition: var(--transition);
}

/* ========================================
   Hero Banner 样式 - 不对称布局
   ======================================== */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #1e3a5f 0%, #1a56db 50%, #0e3a8a 100%);
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 200%;
    background: radial-gradient(circle, rgba(245,158,11,0.1) 0%, transparent 70%);
    animation: rotate 30s linear infinite;
}

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

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    color: #fff;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(245,158,11,0.2);
    border: 1px solid var(--accent-color);
    border-radius: 30px;
    font-size: 0.9rem;
    color: var(--accent-color);
    margin-bottom: 25px;
    animation: fadeInUp 0.8s ease;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 25px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-title .highlight {
    color: var(--accent-color);
    position: relative;
}

.hero-description {
    font-size: 1.2rem;
    line-height: 1.8;
    opacity: 0.9;
    margin-bottom: 35px;
    max-width: 600px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 35px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: var(--accent-color);
    color: #fff;
    box-shadow: 0 10px 30px rgba(245,158,11,0.3);
}

.btn-primary:hover {
    background: #d97706;
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(245,158,11,0.4);
}

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

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: #fff;
    transform: translateY(-3px);
}

.hero-visual {
    position: relative;
    animation: fadeInRight 1s ease 0.5s both;
}

.hero-image-wrapper {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0,0,0,0.3);
}

.hero-image-wrapper img {
    width: 100%;
    height: 500px;
    object-fit: cover;
}

.hero-stats {
    position: absolute;
    bottom: -30px;
    left: -30px;
    background: #fff;
    padding: 25px;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

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

.stat-number {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary-color);
    display: block;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 5px;
}

/* ========================================
   服务卡片 - 交错网格布局
   ======================================== */
.services-section {
    background: var(--bg-light);
    position: relative;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.service-card {
    background: #fff;
    border-radius: 20px;
    padding: 40px 30px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

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

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    transform: rotate(10deg) scale(1.1);
}

.service-icon img {
    width: 35px;
    height: 35px;
    filter: brightness(0) invert(1);
}

.service-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.service-description {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.95rem;
}

.service-link:hover {
    gap: 12px;
}

/* ========================================
   优势板块 - 横向滚动布局
   ======================================== */
.advantages-section {
    background: #fff;
}

.advantages-wrapper {
    display: flex;
    gap: 40px;
    overflow-x: auto;
    padding: 20px 5px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
}

.advantage-item {
    min-width: 350px;
    scroll-snap-align: start;
    background: linear-gradient(135deg, #f8fafc 0%, #eef2ff 100%);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid var(--border-color);
}

.advantage-number {
    font-size: 4rem;
    font-weight: 900;
    color: rgba(26,86,219,0.1);
    line-height: 1;
    margin-bottom: -20px;
}

.advantage-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
    position: relative;
}

.advantage-description {
    color: var(--text-light);
    line-height: 1.8;
}

/* ========================================
   案例展示 - 瀑布流布局
   ======================================== */
.cases-section {
    background: var(--bg-light);
}

.cases-filter {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 25px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.95rem;
}

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

.cases-masonry {
    column-count: 3;
    column-gap: 30px;
}

.case-item {
    break-inside: avoid;
    margin-bottom: 30px;
    background: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.case-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

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

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

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

.case-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 0%, rgba(0,0,0,0.8) 100%);
    opacity: 0;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 20px;
}

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

.case-category {
    color: var(--accent-color);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.case-title {
    color: #fff;
    font-size: 1.2rem;
    font-weight: 700;
}

.case-info {
    padding: 20px;
}

.case-client {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 5px;
}

.case-description {
    color: var(--text-dark);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ========================================
   新闻资讯 - 卡片列表布局
   ======================================== */
.news-section {
    background: #fff;
}

.news-tabs {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 40px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 15px;
}

.news-tab {
    position: relative;
    padding: 10px 20px;
    cursor: pointer;
    color: var(--text-light);
    font-weight: 600;
    transition: var(--transition);
}

.news-tab:hover,
.news-tab.active {
    color: var(--primary-color);
}

.news-tab.active::after {
    content: '';
    position: absolute;
    bottom: -17px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.news-card {
    background: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

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

.news-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

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

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

.news-date {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--primary-color);
    color: #fff;
    padding: 8px 15px;
    border-radius: 8px;
    text-align: center;
    font-size: 0.85rem;
}

.news-date .day {
    font-size: 1.3rem;
    font-weight: 800;
    display: block;
    line-height: 1;
}

.news-content {
    padding: 25px;
}

.news-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

.news-excerpt {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    color: var(--text-light);
    font-size: 0.85rem;
}

.news-author {
    display: flex;
    align-items: center;
    gap: 8px;
}

.news-author img {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    object-fit: cover;
}

/* ========================================
   页脚样式 - 多列布局
   ======================================== */
.footer {
    background: linear-gradient(180deg, #1f2937 0%, #111827 100%);
    color: rgba(255,255,255,0.8);
    padding: 80px 0 30px;
}

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

.footer-brand {
    padding-right: 20px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-logo img {
    width: 50px;
    height: 50px;
    border-radius: 8px;
}

.footer-logo-text {
    color: #fff;
    font-size: 1.3rem;
    font-weight: 700;
}

.footer-description {
    line-height: 1.8;
    margin-bottom: 25px;
}

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

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

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

.social-link img {
    width: 20px;
    height: 20px;
    filter: brightness(0) invert(1);
}

.footer-column h4 {
    color: #fff;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
}

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

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

.footer-links a {
    color: rgba(255,255,255,0.7);
    transition: var(--transition);
}

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

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 15px;
    color: rgba(255,255,255,0.7);
}

.footer-contact-item img {
    width: 20px;
    height: 20px;
    filter: brightness(0) invert(1);
    margin-top: 3px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-copyright {
    font-size: 0.9rem;
}

.footer-links-bottom {
    display: flex;
    gap: 25px;
}

.footer-links-bottom a {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
}

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

/* ========================================
   内页通用样式
   ======================================== */
.page-header {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    padding: 150px 0 80px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 50%;
    height: 200%;
    background: radial-gradient(circle, rgba(245,158,11,0.15) 0%, transparent 70%);
}

.page-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
}

.page-subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
    position: relative;
    z-index: 1;
}

.breadcrumb a {
    color: rgba(255,255,255,0.8);
    font-size: 0.95rem;
}

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

.breadcrumb span {
    color: rgba(255,255,255,0.5);
}

/* ========================================
   关于我们页面样式
   ======================================== */
.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.about-image-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--accent-color);
    color: #fff;
    padding: 25px;
    border-radius: 15px;
    text-align: center;
}

.about-image-badge .number {
    font-size: 2.5rem;
    font-weight: 800;
    display: block;
    line-height: 1;
}

.about-content h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-dark);
}

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

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 30px;
}

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

.about-feature img {
    width: 24px;
    height: 24px;
}

.about-feature span {
    color: var(--text-dark);
    font-weight: 600;
}

/* ========================================
   新闻列表页面样式
   ======================================== */
.news-list-page {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 40px;
}

.news-list-main {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.news-list-item {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 30px;
    background: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.news-list-item:hover {
    box-shadow: var(--shadow-lg);
}

.news-list-item .news-image {
    height: 100%;
    min-height: 200px;
}

.news-list-item .news-content {
    padding: 25px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* 新闻侧边栏 */
.news-sidebar {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.sidebar-widget {
    background: #fff;
    border-radius: 15px;
    padding: 25px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.sidebar-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

.sidebar-news-list li {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.sidebar-news-list a {
    color: var(--text-dark);
    font-size: 0.95rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.sidebar-news-list a:hover {
    color: var(--primary-color);
}

.sidebar-news-date {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 5px;
}

/* ========================================
   新闻详情页面样式
   ======================================== */
.news-detail-container {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 40px;
}

.news-detail-main {
    background: #fff;
    border-radius: 15px;
    padding: 40px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.news-detail-header {
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
}

.news-detail-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 15px;
    color: var(--text-dark);
    line-height: 1.3;
}

.news-detail-meta {
    display: flex;
    gap: 25px;
    color: var(--text-light);
    font-size: 0.95rem;
}

.news-detail-meta span {
    display: flex;
    align-items: center;
    gap: 8px;
}

.news-detail-cover {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 15px;
    margin-bottom: 30px;
}

.news-detail-content {
    line-height: 1.8;
    color: var(--text-dark);
}

.news-detail-content p {
    margin-bottom: 20px;
}

.news-detail-content img {
    max-width: 100%;
    border-radius: 10px;
    margin: 20px 0;
}

/* 相关新闻 */
.related-news {
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.related-news h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 25px;
}

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

.related-news-card {
    background: var(--bg-light);
    border-radius: 10px;
    padding: 20px;
    transition: var(--transition);
}

.related-news-card:hover {
    background: #fff;
    box-shadow: var(--shadow-md);
}

.related-news-card .news-title {
    font-size: 1rem;
    margin-bottom: 10px;
}

.related-news-card .news-date {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* ========================================
   联系页面样式
   ======================================== */
.contact-section {
    background: var(--bg-light);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    padding: 50px;
    color: #fff;
}

.contact-info h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.contact-info p {
    opacity: 0.9;
    line-height: 1.8;
    margin-bottom: 30px;
}

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

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

.contact-item-icon {
    width: 50px;
    height: 50px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-item-icon img {
    width: 24px;
    height: 24px;
    filter: brightness(0) invert(1);
}

.contact-item-text strong {
    display: block;
    margin-bottom: 5px;
}

.contact-form-wrapper {
    background: #fff;
    border-radius: 20px;
    padding: 50px;
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 15px 20px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26,86,219,0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

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

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

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1200px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero-description {
        margin: 0 auto 35px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .hero-stats {
        left: 50%;
        transform: translateX(-50%);
        bottom: -30px;
    }
    
    .footer-main {
        grid-template-columns: 1fr 1fr;
    }
    
    .cases-masonry {
        column-count: 2;
    }
}

@media (max-width: 992px) {
    .navbar {
        transform: translateX(-100%);
    }
    
    .navbar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .hamburger-btn {
        display: flex;
    }
    
    .about-intro {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .news-list-page,
    .news-detail-container {
        grid-template-columns: 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        position: relative;
        bottom: auto;
        left: auto;
        margin-top: 30px;
        transform: none;
    }
    
    .advantages-wrapper {
        flex-direction: column;
        overflow-x: visible;
    }
    
    .advantage-item {
        min-width: 100%;
    }
    
    .cases-masonry {
        column-count: 1;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .news-list-item {
        grid-template-columns: 1fr;
    }
    
    .news-list-item .news-image {
        min-height: 200px;
    }
    
    .related-news-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .news-tabs {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
}

/* 隐藏滚动条但保留功能 */
.navbar::-webkit-scrollbar {
    width: 6px;
}

.navbar::-webkit-scrollbar-track {
    background: rgba(255,255,255,0.1);
}

.navbar::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.3);
    border-radius: 3px;
}

.navbar::-webkit-scrollbar-thumb:hover {
    background: rgba(255,255,255,0.5);
}