/* 全局样式 */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

:root {
    --primary-color: #2a2a2a;
    --secondary-color: #f5f5f5;
    --accent-color: #0066ff;
    --text-color: #333;
    --light-text: #fff;
    --domestic-tag: #ff4d4d;
    --foreign-tag: #4d79ff;
}

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

body {
    font-family: 'Poppins', sans-serif;
    color: var(--text-color);
    overflow-x: hidden;
}

section {
    padding: 80px 0;
}

h1, h2, h3 {
    font-weight: 600;
}

h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 50px;
}

/* 导航栏样式 */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    list-style: none;
}

.nav-menu li {
    margin-left: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 500;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.nav-menu a:hover, .nav-menu a.active {
    color: var(--accent-color);
}

.hamburger {
    display: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    background-color: var(--primary-color);
    transition: all 0.3s ease;
}

/* 首屏区域样式 */
.hero {
    height: 100vh;
    background-image: url('images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 4rem;
    color: var(--light-text);
    margin-bottom: 2rem;
    letter-spacing: 2px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.cta-button {
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
    background-color: var(--accent-color);
    color: var(--light-text);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.cta-button:hover {
    background-color: #0052cc;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

/* AI模型展示区样式 */
.models-section {
    background-color: var(--secondary-color);
    padding: 100px 0;
}

.models-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    transform: perspective(1000px) rotateY(-30deg);
    padding: 50px;
}

.model-card {
    background-color: var(--light-text);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
    height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

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

.model-tag {
    position: absolute;
    top: 15px;
    right: 15px;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--light-text);
}

.domestic {
    background-color: var(--domestic-tag);
}

.foreign {
    background-color: var(--foreign-tag);
}

.model-logo {
    width: 120px;
    height: 120px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.model-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.model-card h3 {
    font-size: 1.5rem;
    text-align: center;
    margin-top: 15px;
}

/* 博主推荐区样式 */
.bloggers-section {
    padding: 100px 0;
}

.bloggers-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    padding: 0 20px;
}

.blogger-card {
    background-color: var(--light-text);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    text-align: center;
}

.blogger-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.blogger-photo {
    height: 250px;
    overflow: hidden;
}

.blogger-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.blogger-card:hover .blogger-photo img {
    transform: scale(1.05);
}

.blogger-card h3 {
    padding: 20px;
    font-size: 1.3rem;
}

/* 页脚联系信息样式 */
.footer {
    background-color: var(--primary-color);
    color: var(--light-text);
    padding: 50px 0 20px;
}

.contact-info {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--accent-color);
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .models-container, .bloggers-container {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .models-container {
        transform: perspective(1000px) rotateY(-15deg);
    }
    
    .hero h1 {
        font-size: 3.5rem;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 1rem 5%;
    }
    
    .hamburger {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--light-text);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        padding: 20px 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 15px 0;
    }
    
    .hero h1 {
        font-size: 2.8rem;
    }
    
    .models-container {
        grid-template-columns: 1fr;
        transform: none;
    }
    
    .bloggers-container {
        grid-template-columns: 1fr;
    }
    
    section {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .cta-button {
        padding: 0.8rem 2rem;
        font-size: 1rem;
    }
    
    h2 {
        font-size: 2rem;
    }
}