/* 维高网络科技官网样式 */

/* 基础样式 */
:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --gradient-start: #667eea;
    --gradient-end: #764ba2;
    --dark-bg: #0f172a;
    --light-bg: #f8fafc;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --white: #ffffff;
    --border-color: #e2e8f0;
    --shadow-light: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-medium: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-large: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* 导航栏 */
.navbar {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    padding: 1rem 0;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.8) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    transition: all 0.3s ease;
    position: relative;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--white) !important;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    width: 100%;
}

/* 英雄区域 */
.hero-section {
    min-height: 100vh;
    background: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 25%, #2d1b69 50%, #1e293b 75%, #0f172a 100%);
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
}

/* 科技网格背景 */
.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="%23334155" stroke-width="0.5" opacity="0.4"/><circle cx="0" cy="0" r="1" fill="%23667eea" opacity="0.3"/><circle cx="20" cy="20" r="1" fill="%23667eea" opacity="0.3"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.6;
    animation: gridPulse 4s ease-in-out infinite;
}

/* 世界地图背景层 */
.hero-section::after {
    content: '';
    position: absolute;
    top: 10%;
    right: -10%;
    width: 60%;
    height: 80%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 800 400"><g fill="none" stroke="%23667eea" stroke-width="1" opacity="0.3"><path d="M100,100 Q200,50 300,100 T500,100"/><path d="M150,150 Q250,100 350,150 T550,150"/><path d="M200,200 Q300,150 400,200 T600,200"/><circle cx="200" cy="120" r="3" fill="%2359f" opacity="0.6"/><circle cx="350" cy="170" r="3" fill="%2359f" opacity="0.6"/><circle cx="500" cy="140" r="3" fill="%2359f" opacity="0.6"/><circle cx="300" cy="220" r="3" fill="%2359f" opacity="0.6"/></g></svg>') no-repeat;
    background-size: contain;
    animation: mapFloat 8s ease-in-out infinite;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.text-gradient {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
    display: inline-block;
    /* 兼容性回退 */
    color: #667eea;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
    max-width: 500px;
}

.hero-buttons {
    margin-top: 2rem;
}

.hero-image {
    position: relative;
    height: 500px;
    z-index: 2;
}

/* AI科技动效容器 */
.floating-element {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

/* 主要AI核心 */
.floating-element::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200px;
    height: 200px;
    background: 
        radial-gradient(circle at center, rgba(59, 130, 246, 0.4) 0%, rgba(147, 51, 234, 0.3) 30%, transparent 70%),
        conic-gradient(from 0deg, transparent, rgba(59, 130, 246, 0.6), transparent);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: aiCore 4s linear infinite;
    z-index: 3;
}

/* 外围轨道环 */
.floating-element::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 300px;
    height: 300px;
    border: 2px solid rgba(59, 130, 246, 0.3);
    border-top: 2px solid rgba(59, 130, 246, 0.8);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: orbit 6s linear infinite;
    z-index: 2;
}

/* 数据粒子 */
.data-particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(59, 130, 246, 0.8);
    border-radius: 50%;
    animation: particleFloat 3s ease-in-out infinite;
}

.data-particle:nth-child(1) {
    top: 20%;
    left: 15%;
    animation-delay: 0s;
    animation-duration: 4s;
}

.data-particle:nth-child(2) {
    top: 60%;
    left: 25%;
    animation-delay: 1s;
    animation-duration: 3.5s;
}

.data-particle:nth-child(3) {
    top: 30%;
    right: 20%;
    animation-delay: 2s;
    animation-duration: 4.5s;
}

.data-particle:nth-child(4) {
    bottom: 25%;
    right: 15%;
    animation-delay: 0.5s;
    animation-duration: 3.8s;
}

.data-particle:nth-child(5) {
    top: 70%;
    left: 60%;
    animation-delay: 1.5s;
    animation-duration: 4.2s;
}

/* 连接线 */
.connection-line {
    position: absolute;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.6), transparent);
    animation: dataFlow 2s ease-in-out infinite;
}

.connection-line:nth-child(6) {
    top: 25%;
    left: 20%;
    width: 150px;
    transform: rotate(45deg);
    animation-delay: 0s;
}

.connection-line:nth-child(7) {
    top: 65%;
    right: 25%;
    width: 120px;
    transform: rotate(-30deg);
    animation-delay: 1s;
}

.connection-line:nth-child(8) {
    bottom: 30%;
    left: 40%;
    width: 100px;
    transform: rotate(15deg);
    animation-delay: 0.5s;
}

/* 动画定义 */
@keyframes aiCore {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes orbit {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(-360deg); }
}

@keyframes particleFloat {
    0%, 100% { 
        transform: translateY(0px) scale(1);
        opacity: 0.6;
    }
    50% { 
        transform: translateY(-20px) scale(1.2);
        opacity: 1;
    }
}

@keyframes dataFlow {
    0% { 
        opacity: 0;
        transform: scaleX(0);
    }
    50% { 
        opacity: 1;
        transform: scaleX(1);
    }
    100% { 
        opacity: 0;
        transform: scaleX(0);
    }
}

@keyframes gridPulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 0.8; }
}

@keyframes mapFloat {
    0%, 100% { 
        transform: translateY(0px) translateX(0px);
        opacity: 0.3;
    }
    50% { 
        transform: translateY(-10px) translateX(5px);
        opacity: 0.5;
    }
}

/* 按钮样式 */
.btn {
    font-weight: 600;
    padding: 0.75rem 2rem;
    border-radius: 50px;
    transition: all 0.3s ease;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    color: var(--white);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: var(--shadow-large);
}

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

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn-outline-light {
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: var(--white);
    background: transparent;
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
    color: var(--white);
    transform: translateY(-2px);
}

/* 通用区域样式 */
.section-padding {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
    position: relative;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* 通用卡片样式 */
.feature-card,
.strategy-card,
.agent-type-card,
.product-card,
.advantage-card,
.technology-card,
.performance-card,
.scenario-card,
.application-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: left;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.feature-card:hover,
.strategy-card:hover,
.agent-type-card:hover,
.product-card:hover,
.advantage-card:hover,
.technology-card:hover,
.performance-card:hover,
.scenario-card:hover,
.application-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-large);
    border-color: var(--primary-color);
}

/* 卡片图标样式 */
.feature-icon,
.strategy-icon,
.agent-icon,
.product-icon,
.advantage-icon,
.tech-icon,
.performance-icon,
.scenario-icon,
.application-icon,
.risk-icon,
.layer-icon,
.service-icon,
.contact-info-icon,
.vision-icon,
.value-icon,
.component-icon,
.workflow-icon,
.case-result-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.75rem;
    color: var(--white);
    flex-shrink: 0;
}

/* 图标和标题在同一行的布局样式 */
.risk-card,
.strategy-card,
.layer-card,
.performance-card,
.advantage-card,
.service-model-card,
.contact-info-card,
.vision-card,
.value-card,
.component-item,
.workflow-item,
.case-result-item {
    display: flex;
    flex-direction: column;
}

/* 图标和标题容器 */
.risk-card .risk-icon + h4,
.strategy-card .strategy-icon + h4,
.layer-card .layer-icon + h4,
.performance-card .performance-icon + h4,
.advantage-card .advantage-icon + h4,
.service-model-card .service-icon + h4,
.contact-info-card .contact-info-icon + h4,
.vision-card .vision-icon + h4,
.value-card .value-icon + h4,
.component-item .component-icon + .component-content h4,
.workflow-item .workflow-icon + h4,
.case-result-item .case-result-icon + h4 {
    margin-top: 0;
    margin-bottom: 1rem;
}

/* 特殊处理：图标和标题在同一行的结构 */
.icon-title-row {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.icon-title-row .risk-icon,
.icon-title-row .strategy-icon,
.icon-title-row .layer-icon,
.icon-title-row .performance-icon,
.icon-title-row .advantage-icon,
.icon-title-row .service-icon,
.icon-title-row .contact-info-icon,
.icon-title-row .vision-icon,
.icon-title-row .value-icon,
.icon-title-row .component-icon,
.icon-title-row .workflow-icon,
.icon-title-row .case-result-icon {
    width: 50px;
    height: 50px;
    margin-right: 1rem;
    margin-bottom: 0;
    font-size: 1.25rem;
}

.icon-title-row h4 {
    margin-bottom: 0;
    flex-grow: 1;
}

/* 卡片标题样式 */
.feature-card h3,
.feature-card h4,
.strategy-card h4,
.agent-type-card h4,
.product-card h4,
.advantage-card h4,
.technology-card h4,
.performance-card h4,
.scenario-card h4,
.application-card h4 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
    line-height: 1.3;
}

/* 卡片描述文字样式 */
.feature-card p,
.strategy-card p,
.agent-type-card p,
.product-card p,
.advantage-card p,
.technology-card p,
.scenario-card p,
.application-card p {
    color: var(--text-light);
    line-height: 1.7;
    font-size: 1rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

/* 特殊样式：居中对齐的卡片 */
.feature-card {
    text-align: center;
}

.feature-card .feature-icon {
     margin: 0 auto 1.5rem;
     border-radius: 50%;
     width: 80px;
     height: 80px;
     font-size: 2rem;
 }

/* 功能列表样式 */
.feature-list,
.product-features,
.agent-capabilities,
.strategy-features,
.tech-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-list li,
.product-features .feature-item,
.tech-features .tech-feature {
    display: flex;
    align-items: center;
    padding: 0.5rem 0;
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.5;
}

.feature-list li i,
.product-features .feature-item i,
.tech-features .tech-feature i {
    color: var(--primary-color);
    margin-right: 0.75rem;
    font-size: 1rem;
    flex-shrink: 0;
    width: 16px;
}

/* 标签和徽章样式 */
.strategy-features,
.agent-capabilities {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: auto;
}

.strategy-features .badge,
.capability-tag {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 500;
    border-radius: 20px;
    background: var(--light-bg);
    color: var(--text-dark);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.strategy-features .badge:hover,
.capability-tag:hover {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

/* 性能卡片特殊样式 */
.performance-card {
    text-align: center;
    background: linear-gradient(135deg, var(--white), #f8fafc);
}

.performance-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin: 1rem 0 0.5rem;
    line-height: 1;
}

.performance-label {
    font-size: 1rem;
    color: var(--text-light);
    font-weight: 500;
    margin-bottom: 0;
}

/* 技术卡片特殊样式 */
.tech-header {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
}

.tech-header .tech-icon {
    margin-right: 1rem;
    margin-bottom: 0;
}

.tech-header h4 {
    margin-bottom: 0;
    font-size: 1.25rem;
}

.tech-content {
    flex-grow: 1;
}

/* 场景卡片特殊样式 */
.scenario-image {
    margin-bottom: 1.5rem;
    border-radius: 12px;
    overflow: hidden;
}

.scenario-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.scenario-content h4 {
    margin-bottom: 1rem;
}

.scenario-content ul {
    list-style: none;
    padding: 0;
    margin: 1rem 0 0;
}

.scenario-content ul li {
    display: flex;
    align-items: center;
    padding: 0.25rem 0;
    color: var(--text-light);
    font-size: 0.9rem;
}

.scenario-content ul li::before {
    content: '•';
    color: var(--primary-color);
    margin-right: 0.75rem;
    font-weight: bold;
}

/* 服务内容 */
.service-content {
    padding: 2rem 0;
}

.service-content h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.service-content p {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.service-list {
    list-style: none;
    margin-bottom: 2rem;
}

.service-list li {
    padding: 0.5rem 0;
    color: var(--text-light);
    display: flex;
    align-items: center;
    white-space: nowrap;
    flex-wrap: nowrap;
}

.service-list li i {
    color: var(--primary-color);
    margin-right: 0.75rem;
    font-size: 1.125rem;
    flex-shrink: 0;
    min-width: 20px;
}

.service-image {
    text-align: center;
    padding: 2rem;
}

.service-image img {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.1));
}

/* 案例卡片 */
.case-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    height: 100%;
}

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

.case-image {
    height: 200px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--light-bg), #e2e8f0);
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-image img {
    width: 80px;
    height: 80px;
    opacity: 0.6;
}

.case-content {
    padding: 1.5rem;
}

.case-content h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.case-content p {
    color: var(--text-light);
    line-height: 1.6;
}

/* 联系卡片 */
.contact-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-large);
    border: 1px solid var(--border-color);
}

.contact-info {
    background: linear-gradient(135deg, var(--dark-bg), #1e293b);
    color: var(--white);
}

.contact-info h4 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.contact-list {
    list-style: none;
}

.contact-list li {
    padding: 0.75rem 0;
    display: flex;
    align-items: center;
    white-space: nowrap;
    flex-wrap: nowrap;
}

.contact-list li i {
    color: var(--gradient-start);
    margin-right: 1rem;
    font-size: 1.125rem;
    width: 20px;
    flex-shrink: 0;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-icon:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
}

.contact-form {
    padding: 2rem;
}

.form-control {
    border: 2px solid var(--border-color);
    border-radius: 10px;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.25);
}

/* 页脚 */
.footer {
    background: var(--dark-bg);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-heading {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--white);
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 0.5rem;
}

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

.footer-contact li {
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    color: rgba(255, 255, 255, 0.7);
    white-space: nowrap;
    flex-wrap: nowrap;
}

.footer-contact li i {
    color: var(--gradient-start);
    margin-right: 0.75rem;
    width: 16px;
    flex-shrink: 0;
}

.footer-social {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 2rem;
    padding-top: 1.5rem;
}

.copyright {
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

.footer-bottom-links {
    list-style: none;
    display: flex;
    gap: 2rem;
    margin: 0;
}

.footer-bottom-links a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: all 0.3s ease;
}

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

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

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

.back-to-top:hover {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    color: var(--white);
    transform: translateY(-3px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-padding {
        padding: 3rem 0;
    }
    
    /* 卡片响应式优化 */
    .feature-card,
    .strategy-card,
    .agent-type-card,
    .product-card,
    .advantage-card,
    .technology-card,
    .performance-card,
    .scenario-card,
    .application-card {
        margin-bottom: 2rem;
        padding: 2rem 1.5rem;
    }
    
    .feature-icon,
    .strategy-icon,
    .agent-icon,
    .product-icon,
    .advantage-icon,
    .tech-icon,
    .performance-icon,
    .scenario-icon,
    .application-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .feature-card .feature-icon {
        width: 70px;
        height: 70px;
        font-size: 1.75rem;
    }
    
    .feature-card h3,
    .feature-card h4,
    .strategy-card h4,
    .agent-type-card h4,
    .product-card h4,
    .advantage-card h4,
    .technology-card h4,
    .performance-card h4,
    .scenario-card h4,
    .application-card h4 {
        font-size: 1.25rem;
    }
    
    .performance-number {
        font-size: 2rem;
    }
    
    .tech-header {
        flex-direction: column;
        text-align: center;
    }
    
    .tech-header .tech-icon {
        margin-right: 0;
        margin-bottom: 1rem;
    }
    
    .service-content {
        padding: 1rem 0;
        text-align: center;
    }
    
    .contact-info {
        text-align: center;
    }
    
    .footer-bottom-links {
        justify-content: center;
        margin-top: 1rem;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .btn {
        padding: 0.625rem 1.5rem;
        font-size: 0.875rem;
    }
    
    .feature-card,
    .case-card {
        margin-bottom: 1.5rem;
    }
    
    .contact-card {
        margin: 0 1rem;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* 加载动画 */
.loading {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.loading.loaded {
    opacity: 1;
    transform: translateY(0);
}

/* 合作伙伴 */
.partners-grid {
    padding: 2rem 0;
}

.partner-category {
    margin-bottom: 3rem;
}

.partner-category-title {
    color: var(--primary-color);
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
}

.partner-category-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.partner-item {
    text-align: center;
    padding: 1.5rem 1rem;
    border-radius: 15px;
    background: white;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid rgba(0,0,0,0.05);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.partner-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
    border-color: var(--primary-color);
}

.partner-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.partner-text {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.2;
}

.partner-logo small {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    opacity: 0.8;
}

.partner-item:hover .partner-text {
    color: var(--primary-color);
}

.partner-item:hover .partner-logo small {
    color: var(--secondary-color);
    opacity: 1;
}

/* 自定义滚动指示器 */
.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    z-index: 9999;
}

.scroll-progress {
    height: 100%;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    width: 0%;
    transition: width 0.1s ease;
}

/* Highlight Item 样式 - 图标和标题在同一行 */
.highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    border-radius: 10px;
    background: var(--white);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-light);
    transition: all 0.3s ease;
}

.highlight-item:hover {
    background: var(--white);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-medium);
    transform: translateY(-2px);
}

.highlight-item i {
    font-size: 1.5rem;
    color: var(--gradient-start);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.highlight-item div {
    flex: 1;
}

.highlight-item h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.highlight-item p {
    font-size: 0.9rem;
    color: var(--text-light);
    margin: 0;
    line-height: 1.5;
}

/* 面包屑导航样式 */
.page-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 2rem 0;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    min-height: 200px;
}

/* 有page-subtitle的页面 */
.page-header .container .row {
    align-items: flex-start;
}

/* 没有page-subtitle的页面，面包屑垂直居中 */
.page-header:not(:has(.page-subtitle)) {
    min-height: 150px;
}

.page-header:not(:has(.page-subtitle)) .container .row {
    align-items: center;
    text-align: center;
}

.page-title {
    color: var(--white);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.page-subtitle {
    color: var(--white);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    opacity: 0.9;
    font-weight: 400;
}

.breadcrumb {
    background: transparent;
    padding: 0;
    margin: 0;
    border-radius: 0;
}

.breadcrumb-item {
    font-size: 0.9rem;
}

.breadcrumb-item a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 500;
}

.breadcrumb-item a:hover {
    color: var(--white);
    text-decoration: none;
}

.breadcrumb-item.active {
    color: var(--white);
    font-weight: 600;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "/";
    color: rgba(255, 255, 255, 0.6);
    margin: 0 0.5rem;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .highlight-item {
        gap: 0.75rem;
        padding: 0.75rem;
        margin-bottom: 1rem;
    }
    
    .highlight-item i {
        font-size: 1.25rem;
        width: 20px;
        height: 20px;
    }
    
    .highlight-item h4 {
        font-size: 1rem;
    }
    
    .highlight-item p {
        font-size: 0.85rem;
    }
    
    .page-header {
        padding: 1.5rem 0;
    }
    
    .breadcrumb-item {
        font-size: 0.8rem;
    }
}