/* CSS变量定义 */
:root {
    --primary-dark: #0a0a14;
    --primary-light: #1a1a2e;
    --accent: #e63946;
    --accent-light: #ff6b6b;
    --accent-dark: #c1121f;
    --text-light: #f8f9fa;
    --text-gray: #adb5bd;
    --white: #ffffff;
    --transition: all 0.25s cubic-bezier(0.645, 0.045, 0.355, 1);
}

/* 导航栏容器样式 */
#navbar-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}

/* 页面内容区域上边距，避免被导航栏遮挡 */
body {
    padding-top: 80px;
}

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

body {
    font-family: 'Open Sans', sans-serif;
    background-color: var(--primary-dark);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
    background: linear-gradient(135deg, #0a0a14 0%, #1a1a2e 100%);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 英雄区域样式 */
.hero-section {
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(rgba(10, 10, 20, 0.6), rgba(26, 26, 46, 0.6)), url('../images/kongjiangl/hero-bg.jpg') center/cover no-repeat;
}

.hero-content {
    text-align: center;
    z-index: 1;
    max-width: 1000px;
    padding: 0 20px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    color: var(--white);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    color: var(--text-gray);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.button {
    padding: 15px 30px;
    border-radius: 50px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
    cursor: pointer;
    border: none;
    font-size: 14px;
}

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

.button-primary:hover {
    background-color: var(--accent-light);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(230, 57, 70, 0.3);
}

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

.button-secondary:hover {
    background-color: var(--white);
    color: var(--primary-dark);
    transform: translateY(-3px);
}

/* 特性区域样式 */
.features-section {
    padding: 120px 0;
    background-color: var(--primary-dark);
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--white);
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-gray);
    max-width: 800px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.feature-card {
    background-color: var(--primary-light);
    border-radius: 15px;
    padding: 40px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    border-color: var(--accent);
}

.feature-image {
    width: 100px;
    height: 100px;
    margin: 0 auto 30px;
    border-radius: 15px;
    overflow: hidden;
}

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

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--white);
}

.feature-card p {
    color: var(--text-gray);
    line-height: 1.7;
}

/* 解决方案区域样式 */
.solutions-section {
    padding: 120px 0;
    background-color: var(--primary-light);
}

.solution-card {
    background-color: var(--primary-dark);
    border-radius: 15px;
    overflow: hidden;
    transition: var(--transition);
    margin-bottom: 60px;
    display: flex;
    flex-direction: column;
}

.solution-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.solution-image {
    height: 300px;
    overflow: hidden;
}

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

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

.solution-content {
    padding: 40px;
    flex-grow: 1;
}

.solution-content h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--white);
}

.solution-content p {
    color: var(--text-gray);
    margin-bottom: 30px;
    line-height: 1.7;
}

/* 技术优势区域样式 */
.advantages-section {
    padding: 120px 0;
    background-color: var(--primary-dark);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.advantage-item {
    text-align: center;
    padding: 40px 20px;
    background-color: var(--primary-light);
    border-radius: 15px;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.advantage-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 30px;
    border-radius: 50%;
    background-color: rgba(230, 57, 70, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: var(--accent);
}

.advantage-item h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--white);
}

.advantage-item p {
    color: var(--text-gray);
    line-height: 1.7;
}

/* 应用场景区域样式 */
.scenarios-section {
    padding: 120px 0;
    background-color: var(--primary-light);
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 60px;
    margin-top: 60px;
}

.scenario-card {
    background-color: var(--primary-dark);
    border-radius: 15px;
    overflow: hidden;
    transition: var(--transition);
}

.scenario-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.scenario-image {
    height: 250px;
    overflow: hidden;
}

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

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

.scenario-content {
    padding: 30px;
}

.scenario-content h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--white);
}

.scenario-content p {
    color: var(--text-gray);
    line-height: 1.7;
}

/* 联系我们区域样式 */
.contact-section {
    padding: 120px 0;
    background-color: var(--primary-dark);
    text-align: center;
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
}

.contact-content h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--white);
}

.contact-content p {
    font-size: 1.1rem;
    color: var(--text-gray);
    margin-bottom: 40px;
}

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

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-content h1 {
        font-size: 2.8rem;
    }
    
    .section-header h2 {
        font-size: 2.2rem;
    }
    
    .solution-content h3 {
        font-size: 1.8rem;
    }
}

@media (max-width: 768px) {
    body {
        padding-top: 60px;
    }
    
    .hero-content h1 {
        font-size: 2.2rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .button {
        padding: 12px 24px;
        font-size: 13px;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .feature-card,
    .advantage-item {
        padding: 30px 20px;
    }
    
    .solution-content {
        padding: 30px 20px;
    }
}

@media (max-width: 576px) {
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .features-section,
    .solutions-section,
    .advantages-section,
    .scenarios-section,
    .contact-section {
        padding: 80px 0;
    }
    
    .section-header {
        margin-bottom: 60px;
    }
}