/* 武汉私家调查公司 - 冷峻硬核风格 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --black: #000000;
    --dark-gray: #1a1a1a;
    --medium-gray: #333333;
    --light-gray: #666666;
    --border-gray: #2a2a2a;
    --accent-blue: #0066cc;
    --accent-blue-light: #0088ff;
    --white: #ffffff;
    --off-white: #f5f5f5;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
    color: var(--white);
    background-color: var(--black);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: var(--accent-blue-light);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-gray);
    z-index: 1000;
    padding: 0 40px;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.navbar .logo {
    font-size: 20px;
    font-weight: 900;
    color: var(--white);
    letter-spacing: 2px;
}

.navbar .logo span {
    color: var(--accent-blue-light);
}

.navbar nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

.navbar nav a {
    color: var(--light-gray);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 5px 0;
    position: relative;
}

.navbar nav a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-blue-light);
    transition: width 0.3s;
}

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

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

/* 英雄区域 */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--black) 0%, var(--dark-gray) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(90deg, transparent 49.5%, var(--border-gray) 49.5%, var(--border-gray) 50.5%, transparent 50.5%),
        linear-gradient(180deg, transparent 49.5%, var(--border-gray) 49.5%, var(--border-gray) 50.5%, transparent 50.5%);
    background-size: 60px 60px;
    opacity: 0.1;
}

.hero-content {
    text-align: center;
    z-index: 1;
    max-width: 800px;
    padding: 0 20px;
}

.hero h1 {
    font-size: 64px;
    font-weight: 900;
    letter-spacing: 8px;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.hero h1 span {
    color: var(--accent-blue-light);
}

.hero p {
    font-size: 18px;
    color: var(--light-gray);
    margin-bottom: 40px;
    letter-spacing: 2px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* 按钮 */
.btn {
    display: inline-block;
    padding: 15px 40px;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background: var(--accent-blue);
    color: var(--white);
    border: 2px solid var(--accent-blue);
}

.btn-primary:hover {
    background: var(--accent-blue-light);
    border-color: var(--accent-blue-light);
    color: var(--white);
}

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

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

/* 通用区块 */
.section {
    padding: 100px 0;
}

.section-dark {
    background: var(--dark-gray);
}

.section-title {
    font-size: 36px;
    font-weight: 900;
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 20px;
    text-align: center;
}

.section-subtitle {
    color: var(--light-gray);
    text-align: center;
    margin-bottom: 60px;
    font-size: 16px;
    letter-spacing: 1px;
}

/* 服务卡片 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--medium-gray);
    padding: 40px 30px;
    border: 1px solid var(--border-gray);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 3px;
    background: var(--accent-blue-light);
    transition: left 0.3s;
}

.service-card:hover::before {
    left: 0;
}

.service-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-5px);
}

.service-icon {
    font-size: 48px;
    margin-bottom: 20px;
    display: block;
}

.service-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 15px;
    letter-spacing: 2px;
}

.service-card p {
    color: var(--light-gray);
    font-size: 14px;
    line-height: 1.8;
}

/* 关于我们 */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: 36px;
    font-weight: 900;
    letter-spacing: 3px;
    margin-bottom: 30px;
}

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

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

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

.stat-number {
    font-size: 48px;
    font-weight: 900;
    color: var(--accent-blue-light);
    display: block;
}

.stat-label {
    color: var(--light-gray);
    font-size: 14px;
    letter-spacing: 1px;
}

/* 新闻列表 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card {
    background: var(--medium-gray);
    border: 1px solid var(--border-gray);
    transition: all 0.3s;
    overflow: hidden;
}

.news-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-5px);
}

.news-image {
    height: 200px;
    background: var(--dark-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: var(--light-gray);
}

.news-content {
    padding: 25px;
}

.news-date {
    color: var(--light-gray);
    font-size: 12px;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.news-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.4;
}

.news-card p {
    color: var(--light-gray);
    font-size: 14px;
    line-height: 1.6;
}

/* 联系表单 */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 30px;
    letter-spacing: 2px;
}

.contact-info p {
    color: var(--light-gray);
    margin-bottom: 20px;
    line-height: 1.8;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.contact-item-icon {
    width: 50px;
    height: 50px;
    background: var(--medium-gray);
    border: 1px solid var(--border-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    font-size: 20px;
}

.contact-item-text {
    color: var(--light-gray);
}

.contact-form {
    background: var(--medium-gray);
    padding: 40px;
    border: 1px solid var(--border-gray);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: var(--light-gray);
    margin-bottom: 8px;
    font-size: 14px;
    letter-spacing: 1px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    background: var(--dark-gray);
    border: 1px solid var(--border-gray);
    color: var(--white);
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-blue-light);
}

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

/* 页脚 */
.footer {
    background: var(--dark-gray);
    border-top: 1px solid var(--border-gray);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer h4 {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.footer p,
.footer a {
    color: var(--light-gray);
    font-size: 14px;
    line-height: 1.8;
}

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

.footer-bottom {
    border-top: 1px solid var(--border-gray);
    padding-top: 30px;
    text-align: center;
    color: var(--light-gray);
    font-size: 14px;
}

/* 页面头部 */
.page-header {
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--black) 0%, var(--dark-gray) 100%);
    border-bottom: 1px solid var(--border-gray);
    margin-top: 70px;
}

.page-header h1 {
    font-size: 48px;
    font-weight: 900;
    letter-spacing: 6px;
    text-transform: uppercase;
}

/* 新闻详情 */
.news-detail {
    max-width: 800px;
    margin: 0 auto;
}

.news-detail-header {
    margin-bottom: 40px;
}

.news-detail-header h1 {
    font-size: 36px;
    font-weight: 900;
    margin-bottom: 20px;
    line-height: 1.3;
}

.news-detail-content {
    color: var(--light-gray);
    line-height: 1.8;
    font-size: 16px;
}

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

/* 响应式 */
@media (max-width: 768px) {
    .navbar {
        padding: 0 20px;
    }
    
    .navbar nav {
        display: none;
    }
    
    .hero h1 {
        font-size: 36px;
        letter-spacing: 4px;
    }
    
    .services-grid,
    .news-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .section {
        padding: 60px 0;
    }
}