/* 首页专用样式 */

.home-page {
    background: #0F172A;
    color: #F8FAFC;
}

/* 导航栏 */
.main-nav-home {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 0;
}

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

.brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
}

.brand-icon {
    font-size: 2rem;
}

.brand-name {
    color: #F8FAFC;
}

.brand-ai {
    background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    color: #CBD5E1;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #F8FAFC;
}

.btn-nav-login {
    padding: 0.5rem 1.5rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-nav-register {
    padding: 0.5rem 1.5rem;
    border-radius: 8px;
    background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
    color: white !important;
}

/* 英雄区域 */
.hero {
    position: relative;
    padding: 180px 0 120px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
    animation: float 20s infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
    top: -200px;
    left: -100px;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #10B981 0%, #3B82F6 100%);
    top: 100px;
    right: -100px;
    animation-delay: -5s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #F59E0B 0%, #EF4444 100%);
    bottom: -100px;
    left: 50%;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 50px;
    color: #93C5FD;
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.badge-icon {
    font-size: 1.2rem;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.gradient-text {
    display: block;
    background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 50%, #EC4899 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    line-height: 1.8;
    color: #CBD5E1;
    margin-bottom: 3rem;
    max-width: 750px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 4rem;
}

.btn-hero-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
    color: white;
    border-radius: 12px;
    text-decoration: none;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 10px 40px rgba(59, 130, 246, 0.3);
}

.btn-hero-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 50px rgba(59, 130, 246, 0.4);
}

.btn-hero-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.05);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s;
}

.btn-hero-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    max-width: 600px;
    margin: 0 auto;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #94A3B8;
    font-size: 0.9rem;
}

/* 功能特性区域 */
.features-section {
    padding: 100px 0;
    background: #1E293B;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.25rem;
    color: #94A3B8;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: rgba(59, 130, 246, 0.5);
    box-shadow: 0 20px 60px rgba(59, 130, 246, 0.2);
}

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.gradient-blue {
    background: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);
}

.gradient-purple {
    background: linear-gradient(135deg, #8B5CF6 0%, #7C3AED 100%);
}

.gradient-green {
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
}

.gradient-orange {
    background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
}

.gradient-red {
    background: linear-gradient(135deg, #EF4444 0%, #DC2626 100%);
}

.gradient-cyan {
    background: linear-gradient(135deg, #06B6D4 0%, #0891B2 100%);
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.feature-description {
    color: #94A3B8;
    line-height: 1.7;
}

/* AI模型区域 */
.models-section {
    padding: 100px 0;
    background: #0F172A;
}

.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.model-card {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.8) 0%, rgba(15, 23, 42, 0.8) 100%);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 2rem;
    transition: all 0.3s;
}

.model-card:hover {
    transform: translateY(-8px);
    border-color: rgba(59, 130, 246, 0.5);
    box-shadow: 0 25px 70px rgba(59, 130, 246, 0.25);
}

.model-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.model-logo {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.2rem;
    color: white;
}

.model-badge {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    color: #93C5FD;
}

.model-name {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.model-version {
    color: #64748B;
    font-family: monospace;
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

.model-description {
    color: #94A3B8;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.model-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.model-tag {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.85rem;
    color: #CBD5E1;
}

/* 工作流程区域 */
.workflow-section {
    padding: 100px 0;
    background: #1E293B;
}

.workflow-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.workflow-step {
    flex: 1;
    min-width: 250px;
    max-width: 350px;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 2rem;
    position: relative;
}

.step-number {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.step-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.step-description {
    color: #94A3B8;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.step-visual {
    display: flex;
    justify-content: center;
}

.visual-box {
    width: 100px;
    height: 100px;
    background: rgba(59, 130, 246, 0.1);
    border: 2px solid rgba(59, 130, 246, 0.3);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.workflow-arrow {
    display: flex;
    align-items: center;
}

/* CTA区域 */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
}

.cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.cta-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-description {
    font-size: 1.25rem;
    color: #94A3B8;
    margin-bottom: 2.5rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn-cta-primary {
    padding: 1.25rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
    color: white;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s;
    box-shadow: 0 10px 40px rgba(59, 130, 246, 0.3);
}

.btn-cta-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 50px rgba(59, 130, 246, 0.4);
}

.btn-cta-secondary {
    padding: 1.25rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.05);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s;
}

.btn-cta-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
}

/* 页脚 */
.main-footer {
    background: #0F172A;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand .brand {
    margin-bottom: 1rem;
}

.footer-description {
    color: #64748B;
    line-height: 1.7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    font-weight: 600;
    margin-bottom: 1rem;
    color: #F8FAFC;
}

.footer-column a {
    display: block;
    color: #94A3B8;
    text-decoration: none;
    margin-bottom: 0.75rem;
    transition: color 0.3s;
}

.footer-column a:hover {
    color: #3B82F6;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #64748B;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .workflow-arrow {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero {
        padding: 120px 0 80px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .features-grid,
    .models-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .cta-title {
        font-size: 2rem;
    }
}