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

:root {
    --primary-color: #8b5cf6;    /* 紫色 */
    --secondary-color: #c084fc;  /* 浅紫色 */
    --background-dark: #171717;  /* 深黑色 */
    --background-card: rgba(30, 30, 30, 0.7);
    --text-light: #f5f5f5;
    --text-secondary: #b0b0b0;
    --accent-color: #a78bfa;     /* 亮紫色 */
    --glass-effect: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.36);
    --text-color: #e0e0e0;
    --light-text: #ffffff;
    --domestic-tag: #8b5cf6;
    --foreign-tag: #c084fc;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    cursor: none; /* 隐藏默认鼠标 */
}

html, body {
    height: 100%;
    overflow-x: hidden;
    scroll-behavior: smooth;
    background-color: var(--background-dark);
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* 自定义鼠标样式 */
.cursor {
    width: 20px;
    height: 20px;
    border: 2px solid #8b5cf6;
    border-radius: 50%;
    position: fixed;
    transform: translate(-50%, -50%);
    pointer-events: none;
    transition: width 0.3s, height 0.3s, border-color 0.3s;
    z-index: 9999;
    mix-blend-mode: difference;
}

.cursor-light {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, rgba(139, 92, 246, 0.05) 40%, rgba(0, 0, 0, 0) 70%);
    border-radius: 50%;
    position: fixed;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 9998;
    opacity: 0.7;
    transition: opacity 0.5s ease, width 0.5s ease, height 0.5s ease;
}

.cursor.hover {
    width: 40px;
    height: 40px;
    border-color: #8b5cf6;
    background-color: rgba(139, 92, 246, 0.1);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
}

h2 {
    font-size: 3.5rem;
    margin-bottom: 2rem;
    text-align: center;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

h2.visible {
    opacity: 1;
    transform: translateY(0);
}

section {
    padding: 8rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

/* 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;
    z-index: 1000;
    background: rgba(23, 23, 23, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all 0.5s ease;
}

.navbar.hidden {
    transform: translateY(-100%);
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: #8b5cf6;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-menu a {
    font-size: 1rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
}

.nav-menu a:hover, .nav-menu a.active {
    color: #8b5cf6;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background: #8b5cf6;
    transition: width 0.3s ease;
}

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

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

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

/* 首屏区域样式 - 增强3D效果 */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-color: #171717;
    position: relative;
    padding: 0;
    perspective: 1000px;
    overflow: hidden;
}

/* 首屏区域样式 */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(139, 92, 246, 0.1), rgba(0, 0, 0, 0) 70%);
    z-index: 1;
}

.hero h1::before {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    color: #8b5cf6;
    opacity: 0.3;
    transform: translateZ(20px);
    filter: blur(8px);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 2rem;
    opacity: 0;
    transform: translateY(30px) translateZ(0);
    animation: fadeInUp 1.5s ease forwards 0.5s;
    transform-style: preserve-3d;
}

.hero h1 {
    font-size: 7rem;
    margin-bottom: 1.5rem;
    color: #ffffff;
    letter-spacing: -2px;
    font-weight: 800;
    transform: translateZ(50px);
    position: relative;
}

.hero h1::before {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    color: #00e1b4;
    opacity: 0.3;
    transform: translateZ(20px);
    filter: blur(8px);
}

.hero-description {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    transform: translateZ(30px);
    position: relative;
    letter-spacing: 1px;
    line-height: 1.8;
}

.hero-description::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--secondary-color), transparent);
}

/* 3D动画效果 */
@keyframes float {
    0% {
        transform: translateY(0px) translateZ(50px);
    }
    50% {
        transform: translateY(-15px) translateZ(50px);
    }
    100% {
        transform: translateY(0px) translateZ(50px);
    }
}

.hero h1 {
    animation: float 6s ease-in-out infinite;
}

/* 创建视差效果的3D层 */
.parallax-layer {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 1;
}

.layer-1 {
    background: radial-gradient(circle at 20% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    transform: translateZ(-100px);
}

.layer-2 {
    background: radial-gradient(circle at 80% 80%, rgba(192, 132, 252, 0.1) 0%, transparent 50%);
    transform: translateZ(-50px);
}

.layer-3 {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.8) 0%, rgba(20, 20, 20, 0.8) 100%);
    opacity: 0.7;
    transform: translateZ(-25px);
}

/* 动态背景动画 */
@keyframes gradientAnimation {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(138, 43, 226, 0.1) 0%, rgba(255, 215, 0, 0.1) 100%);
    background-size: 400% 400%;
    animation: gradientAnimation 15s ease infinite;
    z-index: 0;
}

/* 大语言模型展示区 */
.models-section {
    padding: 60px 0;
    background: linear-gradient(180deg, #171717 0%, #1a1a1a 100%);
    color: white;
}

.models-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 40px;
    color: #8b5cf6;
    text-shadow: 0 0 15px rgba(139, 92, 246, 0.3);
}

.ai-models-showcase {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.models-container {
    margin-bottom: 40px;
}

.models-row {
    margin-bottom: 40px;
}

.category-title {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #a78bfa;
    border-left: 4px solid #8b5cf6;
    padding-left: 15px;
}

/* 模型卡片网格布局 */
.models-3d-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    padding: 20px 0;
    max-width: 1200px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .models-3d-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .model-info-card {
        width: 100%;
        min-height: 250px;
    }
}

/* 移除3D效果，改为简洁信息卡片 */
.model-info-card {
    width: 320px;
    min-height: 280px;
    padding: 24px;
    background: rgba(30, 30, 30, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
}

.model-info-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(139, 92, 246, 0.2);
    border-color: rgba(139, 92, 246, 0.5);
}

/* 类型标签 */
.model-type-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(139, 92, 246, 0.8);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

/* 模型名称 */
.model-name-large {
    font-size: 32px;
    font-weight: 700;
    color: white;
    margin: 20px 0 16px 0;
    line-height: 1.2;
}

/* 描述文字 */
.model-description-text {
    font-size: 14px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 20px;
    flex-grow: 1;
    text-align: left;
}

/* 特色标签容器 */
.model-feature-tags {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
    margin-top: auto;
}

/* 单个特色标签 */
.feature-tag {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 8px;
    transition: background 0.3s ease;
}

.feature-tag:hover {
    background: rgba(139, 92, 246, 0.2);
}

.tag-icon {
    font-size: 16px;
    width: 20px;
    text-align: center;
}

.tag-text {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

/* 发现更多按钮 */
.discover-more {
    text-align: center;
    margin-top: 30px;
}

.discover-btn {
    background: #8b5cf6;
    color: white;
    border: none;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.discover-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(139, 92, 246, 0.5);
    background: #a78bfa;
}

/* 提示文字 */
.hover-hint, .click-hint {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.model-card:hover .hover-hint,
.model-card:hover .click-hint {
    opacity: 1;
}

.model-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 10px 20px;
    background: rgba(139, 92, 246, 0.3);
    border-radius: 30px;
    color: var(--text-light);
    font-weight: 500;
    transition: all 0.3s ease;
    text-decoration: none;
}

.model-link:hover {
    background: rgba(139, 92, 246, 0.5);
    transform: translateY(-3px);
}

/* 3D 旋转动画增强 */
.model-card:hover {
    transform: translateZ(20px) scale(1.05);
}

/* 鼠标跟随效果 */
.model-card {
    transition: all 0.3s ease-out;
}

.model-card:hover {
    box-shadow: 
        0 20px 40px rgba(139, 92, 246, 0.3),
        0 0 60px rgba(139, 92, 246, 0.1);
}

/* 发现更多按钮居中 */
.discover-more {
    width: 100%;
    display: flex;
    justify-content: center;
    margin-top: 60px;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.discover-more.visible {
    opacity: 1;
    transform: translateY(0);
}

.discover-btn {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 15px 40px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 1px;
    transition: all 0.5s ease;
    border: none;
    cursor: pointer;
    box-shadow: 0 10px 25px rgba(138, 43, 226, 0.4);
    position: relative;
    overflow: hidden;
}

.discover-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: all 0.6s ease;
}

.discover-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(138, 43, 226, 0.6);
}

.discover-btn:hover::before {
    left: 100%;
}

/* 资源合集区域 */
.resources-section {
    background: linear-gradient(180deg, #1a1a1a 0%, #171717 100%);
    padding: 60px 0;
    color: white;
}

/* 资源合集区域 */
.resources-section h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 40px;
    color: #8b5cf6;
    text-shadow: 0 0 15px rgba(139, 92, 246, 0.3);
    opacity: 1;
    transform: translateY(0);
}

.resources-module {
    background: rgba(30, 30, 30, 0.8);
    border-radius: 16px;
    padding: 30px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(139, 92, 246, 0.2);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    margin-bottom: 40px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.module-header {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
}

.module-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
}

.module-icon i {
    font-size: 24px;
    color: white;
}

.module-header h3 {
    font-size: 24px;
    color: white;
    margin: 0;
}

/* 文章样式 */
.articles-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
}

.article-category h4 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--accent-color);
    position: relative;
    display: inline-block;
}

.article-category h4::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--accent-color);
}

.article-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* 优质网站推荐样式 */
.websites-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.website-card {
    background: rgba(30, 30, 30, 0.7);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(139, 92, 246, 0.2);
    text-decoration: none;
}

.website-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.2);
    border-color: rgba(139, 92, 246, 0.4);
}

.website-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    flex-shrink: 0;
}

.brain-icon {
    background: linear-gradient(135deg, #8B5CF6, #6366F1);
}

.code-icon {
    background: linear-gradient(135deg, #0EA5E9, #2563EB);
}

.bulb-icon {
    background: linear-gradient(135deg, #F59E0B, #EAB308);
}

.website-icon i {
    color: white;
    font-size: 20px;
}

.website-info {
    flex: 1;
}

.website-info h5 {
    margin: 0 0 8px 0;
    font-size: 18px;
    font-weight: 600;
    color: white;
}

.website-info p {
    margin: 0;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.5;
}

.website-arrow {
    margin-left: 15px;
    color: rgba(255, 255, 255, 0.5);
    transition: all 0.3s ease;
}

.website-card:hover .website-arrow {
    color: #8b5cf6;
    transform: translateX(5px);
}

@media (max-width: 992px) {
    .websites-container {
        flex-direction: column;
    }
    
    .website-card {
        width: 100%;
    }
}

/* 博主推荐区域样式 */
.bloggers-container {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

/* 博主推荐区域样式 */
.blogger-category h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #8b5cf6;
    position: relative;
    display: inline-block;
    padding-left: 12px;
    border-left: 4px solid #8b5cf6;
}

.blogger-cards.horizontal {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding-bottom: 10px;
}

.blogger-profile-card {
    background: rgba(30, 30, 30, 0.7);
    border-radius: 16px;
    padding: 20px;
    min-width: 300px;
    max-width: 600px;
    flex: 1;
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all 0.3s ease;
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.blogger-profile-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.2);
    border-color: rgba(139, 92, 246, 0.4);
}

.blogger-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid #8b5cf6;
    flex-shrink: 0;
}

.blogger-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.blogger-info {
    flex: 1;
}

.blogger-info h5 {
    font-size: 20px;
    margin: 0 0 8px 0;
    color: white;
}

.blogger-info p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    margin: 0 0 12px 0;
    line-height: 1.5;
}

.blogger-meta {
    display: flex;
    align-items: center;
    gap: 15px;
}

.blogger-platform {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 14px;
    color: #8b5cf6;
}

.blogger-platform i {
    font-size: 16px;
}

.blogger-reason {
    background: rgba(139, 92, 246, 0.1);
    color: #8b5cf6;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .ai-models-container {
        flex-direction: column;
        padding: 20px;
    }
    
    .models-container {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .model-guide {
        margin-top: 40px;
        min-width: 100%;
    }
    
    .guide-sticky {
        position: relative;
        top: 0;
    }
    
    .scenarios-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .scenario-card {
        min-height: 120px;
    }
}

@media (max-width: 768px) {
    .category-title {
        font-size: 1.5rem;
    }
    
    .scenarios-grid {
        grid-template-columns: 1fr;
    }
    
    .scenario-card {
        min-height: auto;
        padding: 14px;
    }
    
    .hamburger {
        display: block;
        cursor: pointer;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: rgba(10, 10, 10, 0.95);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 1.5rem 0;
    }
    
    .hero h1 {
        font-size: 3rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .resources-module {
        padding: 2rem;
    }
    
    .module-header {
        flex-direction: column;
        gap: 1rem;
    }
    
    .module-icon {
        margin-bottom: 1rem;
    }
    
    .articles-container {
        grid-template-columns: 1fr;
    }
    
    .blogger-cards.horizontal .blogger-profile-card {
        min-width: 100%;
    }
    
    .contact-info {
        flex-direction: column;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }
    
    section {
        padding: 5rem 1rem;
    }
    
    .model-card {
        padding: 20px;
    }
    
    .model-features {
        flex-direction: column;
        gap: 10px;
    }
    
    .feature {
        width: 100%;
    }
    
    .model-logo {
        width: 100px;
        height: 100px;
    }
    
    .model-card h3 {
        font-size: 1.5rem;
    }
    
    .discover-btn {
        padding: 12px 30px;
        font-size: 1rem;
    }
}

/* 英雄区域按钮样式 */
.hero-cta {
    margin-top: 40px;
    transform: translateZ(40px);
}

/* 英雄区域按钮样式 */
.hero-button {
    display: inline-block;
    padding: 15px 40px;
    background: #8b5cf6;
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 2px;
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.4);
    transition: all 0.5s ease;
    position: relative;
    overflow: hidden;
    border: none;
}

.hero-button:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(139, 92, 246, 0.6);
    background: #a78bfa;
}

.hero-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: all 0.6s ease;
}

.hero-button:hover::before {
    left: 100%;
} 

/* 页脚 */
footer {
    background: #171717;
    padding: 20px 0;
    text-align: center;
    border-top: 1px solid rgba(139, 92, 246, 0.1);
}

.footer-content {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 页面过渡动画 */
.page-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #171717;
    z-index: 9997;
    transform: translateY(100%);
    transition: transform 0.8s cubic-bezier(0.77, 0, 0.175, 1);
}

.page-transition.active {
    transform: translateY(0);
} 

/* 响应式适配 */
@media (max-width: 1200px) {
    .models-grid {
        gap: 20px;
    }
    
    .model-card {
        width: 280px;
        height: 320px;
    }
}

@media (max-width: 768px) {
    .models-grid {
        flex-direction: column;
        align-items: center;
    }
    
    .model-card {
        width: 260px;
        height: 300px;
    }
    
    .model-icon-wrapper {
        width: 80px;
        height: 80px;
    }
    
    .model-icon {
        font-size: 2.5rem;
    }
    
    .model-name {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .models-grid {
        gap: 15px;
    }
    
    .model-card {
        width: 220px;
        height: 280px;
    }
    
    .model-icon-wrapper {
        width: 70px;
        height: 70px;
        margin-bottom: 15px;
    }
    
    .model-icon {
        font-size: 2rem;
    }
    
    .model-name {
        font-size: 1.5rem;
    }
} 

/* 联系区域 */
.contact-section {
    background: linear-gradient(180deg, #171717 0%, #0c0613 100%);
    padding: 60px 0;
    color: white;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

/* 联系区域 */
.contact-title {
    font-size: 3rem;
    margin-bottom: 60px;
    color: #8b5cf6;
    text-align: center;
    opacity: 1;
    transform: translateY(0);
    text-shadow: 0 0 15px rgba(139, 92, 246, 0.3);
}

.contact-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
    max-width: 600px;
    width: 100%;
    margin: 0 auto;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all 0.3s ease;
    padding: 10px 0;
}

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

.contact-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-icon i {
    font-size: 36px;
    color: #8b5cf6;
    transition: all 0.3s ease;
}

.contact-item:hover .contact-icon i {
    color: #a78bfa;
    transform: scale(1.1);
}

.contact-label {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.7);
    width: 80px;
}

.contact-value {
    font-size: 18px;
    color: white;
    flex: 1;
}