/* ============================================
   厚贤咨询官网样式表
   专业公共财政咨询公司官网样式
   ============================================ */

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 主色调 - 深蓝色系，体现专业性 */
    --primary-color: #1e3a5f;
    --primary-dark: #152a47;
    --primary-light: #2d4f7a;
    --secondary-color: #4a90a4;
    --accent-color: #e05858;
    
    /* 中性色 */
    --text-dark: #333333;
    --text-light: #666666;
    --text-lighter: #999999;
    --bg-light: #f5f5f5;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* 字体 */
    --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-xxl: 32px;
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    
    /* 过渡效果 */
    --transition: all 0.3s ease;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ============================================
   导航栏样式
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.navbar.scrolled {
    background-color: rgba(255, 255, 255, 0.99);
    box-shadow: var(--shadow-md);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary-color);
    text-decoration: none;
    font-size: var(--font-size-lg);
    font-weight: bold;
}

.logo-img {
    height: 40px;
    width: auto;
    display: block;
}

.logo-text {
    font-size: 20px;
    letter-spacing: 1px;
}

/* 导航栏文字的图形化版本（厚贤咨询） */
.logo-text-img {
    height: 30px; /* 再缩小一点 */
    width: auto;
    display: block;
    margin-left: -4px; /* 微调左侧留白 */
    margin-top: -2px;  /* 略向上挪动 */
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-menu a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: var(--font-size-base);
    padding: var(--spacing-xs) var(--spacing-sm);
    transition: var(--transition);
    position: relative;
}

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

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 80%;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

/* 导航栏品牌文字：近似 logo 中“厚贤”书法/印章风格（全站） */
.navbar .logo-text {
    font-family: "STKaiti", "KaiTi", "Kaiti SC", "DFKai-SB", "楷体", var(--font-primary);
    font-weight: 700;
    letter-spacing: 0.5px;
}

/* ============================================
   首页轮播
   ============================================ */
.hero-carousel {
    margin-top: 70px;
    padding: var(--spacing-md) 0 var(--spacing-lg);
    background-color: var(--bg-white);
}

.carousel {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

.carousel-track {
    display: flex;
    transition: transform 0.6s ease;
}

.carousel-slide {
    position: relative;
    min-width: 100%;
    aspect-ratio: 16 / 6;
    min-height: 320px;
    background-size: cover;
    background-position: center;
    color: var(--bg-white);
    display: flex;
    align-items: center;
}

.carousel-slide::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.35), rgba(0, 0, 0, 0.25));
}

.carousel-content {
    position: relative;
    z-index: 1;
    padding: var(--spacing-xl);
    max-width: 720px;
}

.carousel-kicker {
    font-size: var(--font-size-sm);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.85);
}

.carousel-title {
    font-size: 2.25rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.carousel-desc {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.9);
    max-width: 640px;
}

.carousel-dots {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 2;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.7);
    background-color: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: var(--transition);
}

.carousel-dot.active {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    transform: scale(1.1);
}

/* ============================================
   Banner区域样式
   ============================================ */
.banner {
    position: relative;
    height: 100vh;
    min-height: 700px;
    background: var(--primary-dark);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 0;
    padding-bottom: 200px;
}

.banner-backgrounds {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

.banner-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transform: scale(1.02);
    transition: opacity 1.2s ease, transform 1.2s ease;
}

.banner-bg.active {
    opacity: 1;
    transform: scale(1);
}

.banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
    z-index: 1;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(0, 12, 26, 0.35), rgba(0, 12, 26, 0.55));
    z-index: 2;
}

.banner-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: var(--bg-white);
    max-width: 800px;
    padding: var(--spacing-md);
    margin-bottom: 180px;
    margin-top: auto;
}

.banner-kicker {
    font-size: var(--font-size-sm);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
    opacity: 0.85;
    animation: fadeInUp 0.9s ease;
}

.banner-title {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    animation: fadeInUp 1s ease;
}

.banner-subtitle {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.2s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.banner-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 3;
}

.banner-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.banner-dot.active {
    width: 24px;
    border-radius: 4px;
    background-color: var(--accent-color);
}

/* Banner数据展示样式 */
.banner-stats {
    position: absolute;
    bottom: 60px;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 1200px;
    padding: 0 var(--spacing-md);
    z-index: 3;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.banner-stat-item {
    background: transparent;
    border: 1px solid transparent;
    border-radius: 16px;
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    color: var(--bg-white);
    transition: all 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.banner-stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--accent-color) 50%, 
        transparent 100%);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.6s ease;
    z-index: 2;
}

.banner-stat-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, 
        rgba(74, 144, 164, 0.05) 0%, 
        rgba(224, 88, 88, 0.05) 100%);
    opacity: 0;
    transition: opacity 0.6s ease;
    pointer-events: none;
}

.banner-stat-item:hover {
    background: transparent;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transform: translateY(-6px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

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

.banner-stat-item:hover::after {
    opacity: 1;
}

.banner-stat-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto;
    margin-bottom: var(--spacing-md);
    color: var(--bg-white);
    opacity: 0.85;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.banner-stat-item:hover .banner-stat-icon {
    opacity: 1;
    transform: scale(1.1);
}

.banner-stat-icon svg {
    width: 100%;
    height: 100%;
}

.banner-stat-number {
    font-size: 3.2rem;
    font-weight: 700;
    color: var(--bg-white);
    line-height: 1;
    margin: 0 auto;
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    flex-shrink: 0;
    position: relative;
    display: inline-block;
}

.banner-stat-item:hover .banner-stat-number {
    transform: scale(1.1);
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.3),
                 0 0 20px rgba(255, 255, 255, 0.2);
}

.banner-stat-number .unit {
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--accent-color);
    line-height: 1;
    text-shadow: 0 2px 8px rgba(224, 88, 88, 0.3);
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    margin-left: 4px;
    transition: all 0.4s ease;
}

.banner-stat-item:hover .banner-stat-number .unit {
    transform: translateY(-50%) scale(1.1);
    text-shadow: 0 4px 12px rgba(224, 88, 88, 0.5),
                 0 0 15px rgba(224, 88, 88, 0.3);
}

.banner-stat-label {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--bg-white);
    margin: 0 auto;
    opacity: 0.9;
    letter-spacing: 0.5px;
    flex-shrink: 0;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.banner-stat-item:hover .banner-stat-label {
    opacity: 1;
    transform: translateY(3px);
    color: rgba(255, 255, 255, 0.95);
}

.banner-stat-desc {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
    margin: 0;
    margin-top: var(--spacing-xs);
    opacity: 0.8;
    flex-shrink: 1;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.banner-stat-item:hover .banner-stat-desc {
    opacity: 1;
    transform: translateY(5px);
    color: rgba(255, 255, 255, 0.9);
}

/* ============================================
   按钮样式
   ============================================ */
.btn {
    display: inline-block;
    padding: 12px 32px;
    font-size: var(--font-size-base);
    font-weight: 500;
    text-decoration: none;
    border-radius: 4px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    animation: fadeInUp 1s ease 0.4s both;
}

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

.btn-primary:hover {
    background-color: #c94a4a;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

/* ============================================
   区块标题样式
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: var(--font-size-xxl);
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   服务概览样式
   ============================================ */
.services-overview {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-white);
    position: relative;
}

.services-overview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(0, 0, 0, 0.05) 40%,
        rgba(0, 0, 0, 0.05) 60%,
        transparent 100%);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    background-color: var(--bg-white);
    padding: var(--spacing-md);
    border-radius: 8px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon svg {
    width: 100%;
    height: 100%;
}

.service-title {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.service-desc {
    color: var(--text-light);
    line-height: 1.8;
}

/* ============================================
   关于我们预览样式
   ============================================ */
.about-preview {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-light);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about-text {
    padding-right: var(--spacing-md);
}

.about-desc {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

/* 移除旧的 .stats 样式，因为数据展示部分已移出 */
/*
.stats {
    display: flex;
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    color: var(--text-light);
    font-size: var(--font-size-sm);
}
*/

.image-placeholder {
    width: 100%;
    height: 100%;
    background-color: var(--bg-light);
    border-radius: 8px;
    overflow: hidden;
}

.image-placeholder svg {
    width: 100%;
    height: 100%;
}

/* ============================================
   我们的优势样式
   ============================================ */
.advantages-section {
    padding: var(--spacing-xl) 0;
    background: var(--bg-white);
    position: relative;
    overflow: hidden;
}

.advantages-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(0, 0, 0, 0.05) 40%,
        rgba(0, 0, 0, 0.05) 60%,
        transparent 100%);
    z-index: 2;
}

.advantages-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 15% 75%, rgba(30, 58, 95, 0.04) 0%, transparent 50%),
        radial-gradient(circle at 85% 25%, rgba(74, 144, 164, 0.04) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(224, 88, 88, 0.03) 0%, transparent 50%);
    opacity: 0.6;
    pointer-events: none;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    text-align: center;
    position: relative;
    z-index: 1;
}

.advantage-item {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-xl) var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
}

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

.advantage-icon {
    width: 60px;
    height: 60px;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.advantage-icon svg {
    width: 100%;
    height: 100%;
}

.advantage-number {
    font-size: 3.8rem; /* 更大的数字 */
    font-weight: 700;
    color: var(--primary-dark);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
    display: flex; /* 使用flexbox对齐数字和单位 */
    align-items: flex-start; /* 顶部对齐，让单位稍高 */
    justify-content: center;
}

.advantage-number .unit {
    font-size: 2.2rem; /* 调整单位大小 */
    font-weight: 600;
    color: var(--accent-color); /* 突出显示单位 */
    margin-left: 8px; /* 增加单位与数字的间距 */
    line-height: 1; /* 保持行高一致 */
}

.advantage-label {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.advantage-desc {
    font-size: var(--font-size-sm);
    color: var(--text-light);
    line-height: 1.6;
}

/* ============================================
   案例预览样式
   ============================================ */
.cases-preview {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-white);
    position: relative;
}

.cases-preview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(0, 0, 0, 0.05) 40%,
        rgba(0, 0, 0, 0.05) 60%,
        transparent 100%);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.case-card {
    background-color: var(--bg-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.case-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
    margin-top: 10px;
}

.case-image .image-placeholder {
    height: 100%;
}

.case-content {
    padding: var(--spacing-md);
}

.case-title {
    font-size: var(--font-size-lg);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.case-desc {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.case-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.tag {
    display: inline-block;
    padding: 4px 12px;
    background-color: var(--bg-light);
    color: var(--primary-color);
    border-radius: 4px;
    font-size: var(--font-size-sm);
}

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

/* ============================================
   页脚样式
   ============================================ */
.footer {
    background-color: var(--primary-dark);
    color: var(--bg-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.footer-desc {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

.footer-heading {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-contact {
    list-style: none;
    color: rgba(255, 255, 255, 0.8);
}

.footer-contact li {
    margin-bottom: var(--spacing-xs);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    color: rgba(255, 255, 255, 0.6);
    position: relative;
}

.footer-bottom::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.12) 40%,
        rgba(255, 255, 255, 0.12) 60%,
        transparent 100%);
}

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

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

.back-to-top svg {
    width: 24px;
    height: 24px;
}

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

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background-color: var(--bg-white);
        width: 100%;
        padding: var(--spacing-md);
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
    }

    .hero-carousel {
        margin-top: 64px;
        padding: var(--spacing-sm) 0 var(--spacing-md);
    }

    .carousel-slide {
        aspect-ratio: 16 / 9;
        min-height: 260px;
    }

    .carousel-content {
        padding: var(--spacing-lg);
    }

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

    .carousel-desc {
        font-size: var(--font-size-base);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .banner-title {
        font-size: 2rem;
    }
    
    .banner-subtitle {
        font-size: var(--font-size-base);
    }
    
    .banner {
        min-height: 600px;
        padding-bottom: 200px;
    }
    
    .banner-content {
        margin-bottom: var(--spacing-xl);
    }
    
    .banner-stats {
        bottom: 60px;
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        padding: 0 var(--spacing-sm);
        position: relative;
        transform: none;
        left: auto;
        margin-top: var(--spacing-lg);
    }
    
    .banner-stat-item {
        padding: var(--spacing-md);
        border-radius: 12px;
    }
    
    .banner-stat-icon {
        width: 40px;
        height: 40px;
        margin-bottom: var(--spacing-sm);
    }
    
    .banner-stat-number {
        font-size: 2.5rem;
        align-items: center;
    }
    
    .banner-stat-number .unit {
        font-size: 1.3rem;
        margin-left: 3px;
    }
    
    .banner-stat-label {
        font-size: var(--font-size-base);
    }
    
    .banner-stat-desc {
        font-size: 12px;
    }
    
    .banner-stat-item {
        padding: var(--spacing-md);
    }
    
    .banner-stat-number {
        font-size: 2.5rem;
        align-items: center;
    }
    
    .banner-stat-number .unit {
        font-size: 1.3rem;
        margin-left: 3px;
    }
    
    .banner-dots {
        bottom: 20px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-text {
        padding-right: 0;
    }
    
    .stats {
        justify-content: space-around;
    }
    
    .services-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .banner-title {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
}

/* ============================================
   页面Banner样式（用于子页面）
   ============================================ */
.page-banner {
    position: relative;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: var(--spacing-xl) 0;
    margin-top: 70px;
    text-align: center;
    color: var(--bg-white);
    overflow: hidden;
    min-height: 280px;
}

.page-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.35;
    z-index: 2;
}

.page-banner::after {
    content: '';
    position: absolute;
    inset: -10% 0 -10% 0;
    background-image:
        linear-gradient(180deg, rgba(0, 12, 26, 0.18), rgba(0, 12, 26, 0.35)),
        url('../images/banner-bg1.svg');
    background-size: cover;
    background-repeat: no-repeat;
    background-position: 50% 85%;
    opacity: 1;
    animation: pageBannerPan 16s ease-in-out infinite alternate;
    z-index: 1;
}

.page-banner .container {
    position: relative;
    z-index: 3;
}

.page-title {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: var(--spacing-sm);
}

.page-subtitle {
    font-size: var(--font-size-lg);
    opacity: 0.9;
}

@keyframes pageBannerPan {
    0% {
        transform: translate3d(0, 0, 0) scale(1.06);
    }
    100% {
        transform: translate3d(-2.2%, -1.2%, 0) scale(1.1);
    }
}

/* 每个子页面使用同一背景，但取不同区域的裁切 */
.page-banner-about::after {
    background-position: 44% 80%;
}

.page-banner-services::after {
    background-position: 56% 82%;
}

.page-banner-cases::after {
    background-position: 50% 88%;
}

.page-banner-industry::after {
    background-position: 52% 84%;
}

.page-banner-contact::after {
    background-position: 48% 75%;
}

/* ============================================
   关于我们页面样式
   ============================================ */
.company-intro {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-white);
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.intro-text {
    padding-right: var(--spacing-md);
}

.intro-desc {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    font-size: var(--font-size-lg);
}

.intro-image {
    width: 100%;
}

.mission-vision {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-light);
}

.mv-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-lg);
}

.mv-card {
    background-color: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.mv-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.mv-icon svg {
    width: 100%;
    height: 100%;
}

.mv-title {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.mv-desc {
    color: var(--text-light);
    line-height: 1.8;
}

.advantages {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-white);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.advantage-item {
    padding: var(--spacing-md);
    text-align: center;
}

.advantage-number {
    font-size: 3rem;
    font-weight: bold;
    color: var(--primary-color);
    opacity: 0.3;
    margin-bottom: var(--spacing-sm);
}

.advantage-title {
    font-size: var(--font-size-lg);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

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

.qualifications {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-light);
}

.qualifications-list {
    max-width: 800px;
    margin: 0 auto;
}

.qual-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--bg-white);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.qual-icon {
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.qual-title {
    font-size: var(--font-size-lg);
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.qual-desc {
    color: var(--text-light);
}

/* ============================================
   企业文化
   ============================================ */
.culture {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-white);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-md);
}

.culture-card {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.culture-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.culture-title {
    font-size: var(--font-size-lg);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.culture-desc {
    color: var(--text-light);
    line-height: 1.8;
}

/* ============================================
   服务内容页面样式
   ============================================ */
.service-process {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-white);
}

.process-timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--border-color);
}

.process-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.process-number {
    width: 60px;
    height: 60px;
    background-color: var(--primary-color);
    color: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    font-weight: bold;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.process-content {
    flex: 1;
    background-color: var(--bg-light);
    padding: var(--spacing-md);
    border-radius: 8px;
}

.process-title {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.process-desc {
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

.process-features {
    list-style: none;
    padding-left: 0;
}

.process-features li {
    color: var(--text-light);
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.process-features li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.detailed-services {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-light);
}

.services-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

.service-detail-card {
    background-color: var(--bg-white);
    padding: var(--spacing-md);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.service-detail-icon {
    width: 60px;
    height: 60px;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.service-detail-icon svg {
    width: 100%;
    height: 100%;
}

.service-detail-title {
    font-size: var(--font-size-lg);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.service-detail-desc {
    color: var(--text-light);
    line-height: 1.8;
}

/* ============================================
   案例展示页面样式
   ============================================ */
.case-categories {
    padding: var(--spacing-md) 0;
    background-color: var(--bg-light);
    border-bottom: 1px solid var(--border-color);
}

.category-tabs {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: center;
}

.category-tab {
    padding: 8px 20px;
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-light);
    cursor: default;
}

.category-tab.active {
    background-color: var(--primary-color);
    color: var(--bg-white);
    border-color: var(--primary-color);
}

.cases-list {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-white);
}

.case-item {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    position: relative;
}

.case-item::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(0, 0, 0, 0.05) 40%,
        rgba(0, 0, 0, 0.05) 60%,
        transparent 100%);
}

.case-item:last-child::after {
    display: none;
}

.case-item-image {
    width: 100%;
    height: 300px;
    overflow: hidden;
    border-radius: 8px;
}

.case-item-content {
    padding: var(--spacing-sm);
}

.case-item-tag {
    display: inline-block;
    padding: 4px 12px;
    background-color: var(--primary-color);
    color: var(--bg-white);
    border-radius: 4px;
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

.case-item-title {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.case-item-desc {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

/* ============================================
   行业动态页面样式
   ============================================ */
.industry-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-white);
}

.industry-layout {
    margin-top: var(--spacing-lg);
}

.industry-column-title {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid var(--primary-color);
    padding-left: var(--spacing-sm);
}

.industry-list {
    margin-top: var(--spacing-sm);
    min-height: 420px;
}

.industry-item {
    padding: var(--spacing-sm) 0;
    position: relative;
    padding-left: 24px;
    border-bottom: 1px solid #f0f0f0;
}

.industry-item::after {
    display: none;
}

.industry-item:last-child {
    border-bottom: none;
}

.industry-title {
    font-size: var(--font-size-base);
    color: #666666;
}

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

.industry-date {
    font-size: var(--font-size-sm);
    color: var(--text-lighter);
    text-align: right;
    flex-shrink: 0;
    margin-left: var(--spacing-md);
}

.industry-desc {
    display: none;
}

.industry-title a {
    color: #666666;
    text-decoration: none;
    transition: var(--transition);
}

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

/* 编号样式，参考提供的资讯列表效果 */
.industry-list-news {
    counter-reset: industry-counter;
}

.industry-item::before {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    content: '■';
    color: #666666;
    font-size: 8px;
    font-weight: bold;
    width: auto;
    height: auto;
    border-radius: 0;
    background-color: transparent;
}

.industry-pagination {
    margin-top: var(--spacing-md);
    display: flex;
    justify-content: center;
    gap: 8px;
}

.industry-page-btn {
    min-width: 36px;
    padding: 6px 10px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-white);
    color: var(--text-light);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: var(--transition);
}

.industry-page-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.industry-page-btn.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--bg-white);
}

/* ============================================
   联系我们页面样式
   ============================================ */
.contact-info {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.contact-card {
    background-color: var(--bg-light);
    padding: var(--spacing-lg);
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.contact-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-icon svg {
    width: 100%;
    height: 100%;
}

.contact-title {
    font-size: var(--font-size-lg);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.contact-detail {
    color: var(--text-light);
    margin-bottom: var(--spacing-xs);
}

.contact-form-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-light);
}

.form-wrapper {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
}

.form-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-dark);
    font-weight: 500;
}

.required {
    color: var(--accent-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: var(--font-size-base);
    font-family: var(--font-primary);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
}

.form-group input.error,
.form-group textarea.error {
    border-color: var(--accent-color);
}

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

.form-submit {
    text-align: center;
    margin-top: var(--spacing-lg);
}

/* ============================================   加入我们页面样式   ============================================ */
.jobs-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-white);
}

.jobs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.job-card {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.job-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.job-header {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.job-title {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.job-meta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.job-department,
.job-location,
.job-experience {
    padding: 4px 12px;
    background-color: var(--bg-light);
    color: var(--primary-color);
    border-radius: 4px;
    font-size: var(--font-size-sm);
}

.job-body {
    padding-top: var(--spacing-sm);
}

.job-section {
    margin-bottom: var(--spacing-md);
}

.job-section-title {
    font-size: var(--font-size-lg);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.job-list {
    list-style: none;
    padding-left: 0;
}

.job-list li {
    color: var(--text-light);
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
    line-height: 1.6;
}

.job-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.application-section {
    padding: var(--spacing-md) 0;
    background-color: var(--bg-light);
}

.application-content {
    max-width: 800px;
    margin: 0;
    padding: 0;
}

.application-notes {
    list-style: none;
    padding-left: 0;
}

.application-notes li {
    color: var(--text-light);
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
    line-height: 1.6;
    margin-bottom: var(--spacing-xs);
}

.application-notes li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .intro-content {
        grid-template-columns: 1fr;
    }
    
    .intro-text {
        padding-right: 0;
    }
    
    .mv-grid {
        grid-template-columns: 1fr;
    }
    
    .process-timeline::before {
        display: none;
    }
    
    .process-item {
        flex-direction: column;
    }
    
    .case-item {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .jobs-grid {
        grid-template-columns: 1fr;
    }
}