:root {
    --primary: #e53935;
    --primary-dark: #b71c1c;
    --dark: #121212;
    --darker: #0a0a0a;
    --light: #f5f5f5;
    --medium: #b0b0b0;
    --card-bg: #1e1e1e;
    --border: #333;
    --accent: #ff5252;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--dark);
    color: var(--light);
    line-height: 1.7;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
header {
    background: linear-gradient(to right, var(--darker), var(--dark));
    padding: 25px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    border-bottom: 3px solid var(--primary);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo h1 {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 1px;
}

.logo span {
    color: var(--light);
    font-weight: 300;
}

.logo .domain {
    font-size: 14px;
    color: var(--medium);
    margin-left: 10px;
    font-weight: 400;
}

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

nav ul li {
    margin-left: 30px;
    position: relative;
}

nav ul li a {
    color: var(--light);
    text-decoration: none;
    font-weight: 500;
    font-size: 16px;
    transition: color 0.3s;
    padding: 5px 0;
}

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

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: width 0.3s;
}

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

/* 英雄区域 */
.hero {
    background: linear-gradient(rgba(10,10,10,0.85), rgba(10,10,10,0.85)), url('https://images.unsplash.com/photo-1544161515-4ab6ce6db874?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80') no-repeat center center/cover;
    padding: 120px 0;
    text-align: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(229, 57, 53, 0.1), transparent);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--light);
    line-height: 1.2;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.hero h2 span {
    color: var(--primary);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    color: var(--medium);
}

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

.btn {
    display: inline-block;
    padding: 14px 32px;
    background-color: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 16px;
    box-shadow: 0 4px 10px rgba(229, 57, 53, 0.3);
}

.btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(229, 57, 53, 0.4);
}

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

.btn-outline:hover {
    background-color: rgba(229, 57, 53, 0.1);
}

/* 服务特色 */
.features {
    padding: 100px 0;
    background-color: var(--darker);
}

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

.section-header h2 {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background-color: var(--primary);
}

.section-header p {
    color: var(--medium);
    max-width: 700px;
    margin: 0 auto;
    font-size: 1.1rem;
}

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

.feature-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 40px 30px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background-color: var(--primary);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: 25px;
    color: var(--primary);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--light);
}

.feature-card p {
    color: var(--medium);
}

/* 服务展示 */
.services {
    padding: 100px 0;
    background-color: var(--dark);
}

.services-tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 50px;
    flex-wrap: wrap;
    gap: 10px;
}

.tab-btn {
    padding: 12px 25px;
    background-color: var(--card-bg);
    color: var(--medium);
    border: none;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
}

.tab-btn.active {
    background-color: var(--primary);
    color: white;
}

.tab-btn:hover:not(.active) {
    background-color: rgba(229, 57, 53, 0.1);
    color: var(--primary);
}

.services-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.service-item {
    background-color: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s;
    border: 1px solid var(--border);
}

.service-item:hover {
    transform: translateY(-5px);
}

.service-img {
    height: 200px;
    background-color: #333;
    background-size: cover;
    background-position: center;
}

.service-details {
    padding: 25px;
}

.service-details h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--primary);
}

.service-details p {
    color: var(--medium);
    margin-bottom: 20px;
}

.service-price {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
}

.price {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
}

/* 关于我们 */
.about {
    padding: 100px 0;
    background: linear-gradient(to right, var(--darker), var(--dark));
}

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

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 25px;
    color: var(--primary);
}

.about-text p {
    margin-bottom: 20px;
    color: var(--medium);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.stat {
    text-align: center;
    padding: 20px;
    background-color: rgba(229, 57, 53, 0.1);
    border-radius: 8px;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 5px;
}

.stat-label {
    color: var(--medium);
    font-size: 0.9rem;
}

.about-image {
    height: 500px;
    background-color: #333;
    border-radius: 10px;
    background-size: cover;
    background-position: center;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
}

/* 引流区域 */
.cta {
    padding: 100px 0;
    background: linear-gradient(rgba(10,10,10,0.9), rgba(10,10,10,0.9)), url('https://images.unsplash.com/photo-1540555700478-4be289fbecef?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80') no-repeat center center/cover;
    text-align: center;
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--light);
}

.cta p {
    max-width: 700px;
    margin: 0 auto 40px;
    color: var(--medium);
    font-size: 1.1rem;
}

.social-platforms {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.platform {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 25px;
    background-color: var(--card-bg);
    border-radius: 10px;
    width: 180px;
    transition: transform 0.3s;
    border: 1px solid var(--border);
}

.platform:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.platform-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.platform-name {
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--light);
}

.platform-btn {
    display: inline-block;
    padding: 8px 15px;
    background-color: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 20px;
    font-size: 0.9rem;
    transition: background-color 0.3s;
}

.platform-btn:hover {
    background-color: var(--primary-dark);
}

/* 页脚 */
footer {
    background-color: var(--darker);
    padding: 70px 0 30px;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 50px;
}

.footer-column h3 {
    color: var(--primary);
    margin-bottom: 25px;
    font-size: 1.3rem;
}

.footer-column p, .footer-column a {
    color: var(--medium);
    margin-bottom: 12px;
    display: block;
    text-decoration: none;
    transition: color 0.3s;
}

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

.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border);
    color: var(--medium);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-image {
        order: -1;
        height: 400px;
    }
}

@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        text-align: center;
    }
    
    nav ul {
        margin-top: 20px;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    nav ul li {
        margin: 0 10px 10px;
    }
    
    .hero h2 {
        font-size: 2.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .social-platforms {
        flex-direction: column;
        align-items: center;
    }
    
    .platform {
        width: 100%;
        max-width: 250px;
    }
}