:root {
    --primary: #F1B41F;
    --primary-dark: #C49413;
    --primary-light: #F6CF57;
    --primary-transparent: rgba(241, 180, 31, 0.1);
    --secondary: #2c3e50;
    --secondary-dark: #1a2530;
    --secondary-light: #34495e;
    --accent: #3498db;
    --accent-dark: #2980b9;
    --light: #f8fafc;
    --light-gray: #f1f5f9;
    --dark: #1e293b;
    --text: #334155;
    --text-light: #64748b;
    --radius: 10px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
    --shadow-hover: 0 20px 60px rgba(0, 0, 0, 0.15);
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    --gradient-dark: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
}

/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans', sans-serif;
}

body {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
    scroll-behavior: smooth;
} 

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

a:hover {
    color: var(--primary-dark);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 按钮样式 - 保留原配色优化动画 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--gradient-primary);
    color: white;
    padding: 14px 32px;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    font-size: 16px;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn:hover::before {
    left: 100%;
}

.btn-large {
    padding: 16px 40px;
    font-size: 18px;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    box-shadow: none;
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}

/* 在 CTA（主色背景）中使用的 outline 按钮，确保在深色背景上可见 */
.cta .btn-outline {
    border-color: white;
    color: white;
}

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

.btn-secondary {
    background: var(--gradient-dark);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--secondary-dark) 0%, var(--secondary) 100%);
}

/* 头部和导航 */
header {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition-slow);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.header-scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.08);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    /* padding: 12px 0; */
    min-height: 96px;
} 

.logo {
    display: flex;
    align-items: center;
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
    transition: var(--transition);
}

.logo:hover {
    transform: translateY(-2px);
}

.logo span {
    color: var(--secondary);
}

.logo-icon {
    width: 200px;
    display: inline-block;
    object-fit: contain;
    border-radius: 10px;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.14));
    animation: float 6s ease-in-out infinite;
} 

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-5px);
    }
}

@media (max-width: 480px) {
    .logo-icon {
        width: 200px;
        margin-right: 10px;
        max-width: 100%;
    }
    .header-content {
        padding: 10px 0;
        min-height: auto;
    }
} 

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 32px;
}

nav ul li a {
    color: var(--secondary);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    font-size: 16px;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--primary);
    /* 改为纯橙色 */
    border-radius: 3px;
    transition: var(--transition);
}

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

nav ul li a.active::after,
nav ul li a:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--secondary);
    transition: var(--transition);
    padding: 8px;
    border-radius: 6px;
}

.mobile-menu-btn:hover {
    background: var(--primary-transparent);
    color: var(--primary);
}

/* 主内容区 */
main {
    min-height: calc(100vh - 180px);
}

/* 英雄轮播区域 - 优化过渡效果 */
.hero-slider {
    position: relative;
    overflow: hidden;
    height: 700px;
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.hero-track {
    display: flex;
    transition: transform 0.8s cubic-bezier(0.645, 0.045, 0.355, 1);
    height: 100%;
}

.hero-slide {
    min-width: 100%;
    position: relative;
    height: 100%;
}

.hero-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.4) 100%);
    z-index: 1;
}

.hero-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: var(--transition-slow);
}

.hero-slide.active img {
    transform: scale(1.05);
}

.hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
    z-index: 2;
    max-width: 800px;
    width: 100%;
    padding: 0 20px;
    opacity: 0;
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.3s forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translate(-50%, calc(-50% + 30px));
    }

    to {
        opacity: 1;
        transform: translate(-50%, -50%);
    }
}

.hero-content h1 {
    font-size: 52px;
    margin-bottom: 24px;
    font-weight: 800;
    line-height: 1.2;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    animation-delay: 0.4s;
}

.hero-content p {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
    line-height: 1.6;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    animation-delay: 0.5s;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    animation-delay: 0.6s;
}

/* 轮播控制 - 优化按钮样式 */
.hero-controls {
    position: absolute;
    bottom: 40px;
    left: 0;
    width: 100%;
    z-index: 3;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
}

.hero-nav {
    display: flex;
    gap: 12px;
}

.hero-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.hero-dot::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary);
    /* 改为纯橙色 */
    border-radius: 50%;
    transform: scale(0);
    transition: var(--transition);
}

.hero-dot.active {
    background: rgba(255, 255, 255, 0.9);
    transform: scale(1.2);
}

.hero-dot.active::before {
    transform: scale(1);
}

.hero-dot:hover {
    transform: scale(1.3);
}

.hero-arrow {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: white;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid rgba(255, 255, 255, 0.2);
    font-size: 24px;
    position: relative;
    overflow: hidden;
}

.hero-arrow::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary);
    /* 改为纯橙色 */
    opacity: 0;
    transition: var(--transition);
    z-index: 1;
}

.hero-arrow i {
    position: relative;
    z-index: 2;
}

.hero-arrow:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
}

.hero-arrow:hover::before {
    opacity: 1;
}

/* 通用卡片和标题样式 */
.card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
    overflow: hidden;
}

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

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

.section-title {
    font-size: 40px;
    color: var(--secondary);
    margin-bottom: 16px;
    font-weight: 700;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary);
    /* 改为纯橙色 */
    border-radius: 2px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* 数据统计区域 */
.stats {
    background: white;
    padding: 80px 0;
    margin-top: -40px;
    position: relative;
    z-index: 2;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    box-shadow: var(--shadow);
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
}

.stat-card {
    text-align: center;
    padding: 40px 20px;
    background: var(--light);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    border: 1px solid rgba(255, 107, 53, 0.1);
}

.stat-card:hover {
    transform: translateY(-5px);
    background: white;
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 107, 53, 0.2);
}

.stat-icon {
    font-size: 48px;
    margin-bottom: 20px;
    display: inline-block;
    transition: var(--transition);
}

.stat-card:hover .stat-icon {
    transform: scale(1.1);
}

.stat-number {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 12px;
}

.stat-label {
    font-size: 16px;
    color: var(--dark);
    font-weight: 500;
}

/* 特色企业轮播 */
.featured-companies {
    padding: 100px 0;
    background: #f8fafc;
}

.companies-carousel {
    position: relative;
    margin: 0 auto;
    max-width: 1100px;
    overflow: hidden;
    border-radius: var(--radius-lg);
}

.carousel-track {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.company-slide {
    min-width: 100%;
    padding: 0 20px;
}

.company-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    height: 100%;
    transition: var(--transition);
}

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

.company-image {
    height: 240px;
    background: var(--primary);
    /* 改为纯橙色 */
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 72px;
    font-weight: 800;
    position: relative;
    overflow: hidden;
}

.company-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    transform: translateX(-100%);
}

.company-card:hover .company-image::before {
    animation: shine 1.5s ease;
}

@keyframes shine {
    100% {
        transform: translateX(100%);
    }
}

.company-content {
    padding: 30px;
}

.company-name {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--secondary);
}

.company-category {
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 20px;
    font-size: 14px;
    padding: 6px 12px;
    background: var(--primary-transparent);
    border-radius: 20px;
    display: inline-block;
}

.company-description {
    color: var(--text-light);
    margin-bottom: 24px;
    font-size: 15px;
    line-height: 1.6;
}

.carousel-nav {
    display: flex;
    justify-content: center;
    margin-top: 40px;
    gap: 12px;
}

.carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: 6px;
    background: #e2e8f0;
    cursor: pointer;
    transition: var(--transition);
}

.carousel-dot.active {
    background: var(--primary);
    transform: scale(1.3);
    width: 24px;
}

.carousel-dot:hover {
    background: var(--primary-light);
    transform: scale(1.2);
}

/* 分类导航 */
.categories {
    padding: 100px 0;
    background: white;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.category-card {
    background: var(--light);
    border-radius: var(--radius-lg);
    padding: 50px 30px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.category-card:hover {
    background: var(--primary);
    /* 改为纯橙色 */
    transform: translateY(-8px);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-hover);
}

.category-card:hover * {
    color: white;
}

.category-icon {
    font-size: 60px;
    margin-bottom: 24px;
    color: var(--primary);
    transition: var(--transition);
    display: inline-block;
}

.category-card:hover .category-icon {
    color: white;
    transform: scale(1.1) rotate(5deg);
}

.category-name {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--secondary);
}

.category-count {
    color: var(--text-light);
    font-size: 14px;
    font-weight: 500;
}

/* 产业趋势 */
.trends {
    padding: 100px 0;
    background: #f8fafc;
}

.trends-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    align-items: center;
    justify-items: center;
} 

.trends-content {
    padding: 0;
    text-align: center;
    max-width: 720px;
} 

/* 已删除未使用的趋势图表样式：.trends-chart 与 .chart-placeholder */

.trends-list {
    list-style: none;
    margin-top: 30px;
    display: inline-block;
    text-align: left;
}

.trends-list li {
    margin-bottom: 15px;
    padding-left: 30px;
    position: relative;
    transition: var(--transition-fast);
}

.trends-list li:hover {
    transform: translateX(5px);
}

.trends-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
    background: var(--primary-transparent);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 行动号召 */
.cta {
    background: var(--primary);
    /* 改为纯橙色 */
    color: white;
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

.cta h2 {
    font-size: 40px;
    margin-bottom: 20px;
    font-weight: 700;
    position: relative;
    z-index: 1;
}

.cta p {
    font-size: 18px;
    margin-bottom: 40px;
    max-width: 600px;
    margin: 0 auto 40px;
    opacity: 0.9;
    line-height: 1.8;
    position: relative;
    z-index: 1;
}

/* 页脚 */
footer {
    background: var(--secondary);
    color: white;
    padding: 80px 0 30px;
    margin-top: 60px;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary);
    /* 改为纯橙色 */
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 50px;
    margin-bottom: 50px;
}

.footer-section h3 {
    margin-bottom: 24px;
    font-size: 20px;
    position: relative;
    padding-bottom: 12px;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary);
    /* 改为纯橙色 */
    border-radius: 3px;
}

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

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

.footer-links a {
    color: #cbd5e1;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: white;
    padding-left: 8px;
}

.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 14px;
    color: #94a3b8;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .hero-content h1 {
        font-size: 44px;
    }

    .section-title {
        font-size: 36px;
    }
}

@media (max-width: 992px) {
    .hero-content h1 {
        font-size: 40px;
    }

    .hero-content p {
        font-size: 18px;
    }

    .hero-slider {
        height: 600px;
    }

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

    .trends-container {
        grid-template-columns: 1fr;
    }

    .trends-content {
        padding-right: 0;
        margin-bottom: 40px;
    }

    .company-image {
        height: 200px;
        font-size: 60px;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: row;
        text-align: center;
    }

    nav ul {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        transform: translateY(-20px);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        z-index: 999;
    }

    nav ul.show {
        display: flex;
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    nav ul li {
        margin: 0 0 15px 0;
    }

    nav ul li:last-child {
        margin-bottom: 0;
    }

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

    .hero-slider {
        height: 500px;
    }

    .hero-content h1 {
        font-size: 32px;
    }

    .hero-content p {
        font-size: 16px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

    .stats {
        margin-top: -20px;
        padding: 60px 0;
    }

    .stats-container {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 32px;
    }

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

    .hero-arrow {
        width: 48px;
        height: 48px;
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .hero-slider {
        height: 450px;
    }

    .hero-content h1 {
        font-size: 28px;
    }

    .section-title {
        font-size: 28px;
    }

    .hero-controls {
        bottom: 20px;
    }

    .company-image {
        height: 180px;
        font-size: 50px;
    }

    .company-content {
        padding: 20px;
    }

    .cta h2 {
        font-size: 32px;
    }

    .cta p {
        font-size: 16px;
    }
}