/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 1);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    /* width: 40px; */
    height: 56px;
    border-radius: 8px;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: #3b82f6;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    text-decoration: none;
    color: #64748b;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #3b82f6;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #3b82f6;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.login-btn {
    background: linear-gradient(135deg, #4a83eb, #0c40c9);
    color: white !important;
    padding: 10px 20px;
    border-radius: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(26, 26, 46, 0.3);
}

.login-btn:hover {
    background: linear-gradient(135deg, #16213e, #0f3460);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(26, 26, 46, 0.4);
}

.login-btn::after {
    display: none;
}

/* 英雄区域 */
.hero {
    padding: 120px 0 80px;
    /* background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 50%, #1e40af 100%); */
    background:linear-gradient(135deg, #c279da 0%, #1d4ed8 50%, #af1e9d 100%);
    color: white;
    overflow: hidden;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('hero-bg.png') center/cover;
    opacity: 0.1;
    z-index: 1;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    animation: fadeInUp 1s ease;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    background: linear-gradient(45deg, #fff, #e0e7ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    line-height: 1.6;
    margin-bottom: 40px;
    opacity: 0.9;
}

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

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 1s ease;
}

.hero-img {
    max-width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 16px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    border-color: #3b82f6;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1d4ed8, #1e40af);
    border-color: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

.btn-secondary:hover {
    background: white;
    color: #2563eb;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #2563eb;
    border-color: #2563eb;
}

.btn-outline:hover {
    background: #2563eb;
    color: white;
    transform: translateY(-2px);
}

.btn-large {
    padding: 20px 40px;
    font-size: 18px;
}

/* 功能特色 */
.features {
    padding: 100px 0;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 50%, #e0f2fe 100%);
    position: relative;
}

.features-rows {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.feature-row {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    align-items: center;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 6px 24px rgba(0,0,0,0.06);
}

.feature-row.reversed {
    grid-template-columns: 1fr 1.2fr;
}

.feature-row.reversed .feature-text {
    order: 2;
}

.feature-row.reversed .feature-media {
    order: 1;
}

.feature-text .feature-icon.inline {
    margin: 0 0 12px 0;
}

.feature-text {
    text-align: left;
}

.feature-media {
    display: flex;
    align-items: center;
    justify-content: center;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(180deg, #3b82f6 0%, transparent 100%);
    opacity: 0.1;
}

.section-title {
    text-align: center;
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 60px;
    color: #1e293b;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 32px rgba(59, 130, 246, 0.3);
}

.feature-icon img {
    width: 40px;
    height: 40px;
    filter: brightness(0) invert(1);
}

.feature-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #1e293b;
    position: relative;
}

.feature-title::after {
    content: "";
    display: block;
    width: 3rem;
    height: 0.5rem;
    background-color: #3b82f6;
    border-radius: 9999px;
    margin-top: 0.5rem;
}

.feature-description {
    color: #64748b;
    line-height: 1.6;
    font-size: 16px;
    margin-bottom: 20px;
}

.feature-gif-placeholder {
    background: linear-gradient(135deg, #f8fafc, #e0f2fe);
    border: 2px dashed #3b82f6;
    border-radius: 12px;
    padding: 40px 20px;
    text-align: center;
    margin-top: 20px;
    transition: all 0.3s ease;
}

.feature-gif-placeholder:hover {
    background: linear-gradient(135deg, #e0f2fe, #bae6fd);
    border-color: #1d4ed8;
    transform: translateY(-2px);
}

.gif-placeholder-text {
    color: #3b82f6;
    font-size: 16px;
    font-weight: 500;
    margin: 0;
}

/* 数据统计 */
.stats {
    padding: 80px 0;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 50%, #1e40af 100%);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-item {
    animation: fadeInUp 0.8s ease;
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(45deg, #fff, #e0e7ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 18px;
    opacity: 0.9;
}

/* 用户评价 */
.testimonials {
    padding: 100px 0;
    background: linear-gradient(180deg, #e0f2fe 0%, #ffffff 50%, #f8fafc 100%);
    position: relative;
}

.testimonials::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(180deg, transparent 0%, #3b82f6 100%);
    opacity: 0.05;
}

.testimonials-slider {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.testimonial-card {
    display: none;
    text-align: center;
    padding: 40px;
    background: #f8fafc;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.testimonial-card.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

.testimonial-content {
    margin-bottom: 30px;
}

.testimonial-content p {
    font-size: 20px;
    line-height: 1.6;
    color: #374151;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.author-name {
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 4px;
}

.author-title {
    color: #64748b;
    font-size: 14px;
}

.testimonial-nav {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 40px;
}

.nav-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: none;
    background: #cbd5e1;
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-dot.active {
    background: #3b82f6;
    transform: scale(1.2);
}

/* CTA区域 */
.cta {
    padding: 100px 0;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 50%, #1e40af 100%);
    color: white;
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 24px;
    line-height: 1.2;
}

.cta-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

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

/* 页脚 */
.footer {
    background: #1e293b;
    color: white;
    padding: 60px 0 20px;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.footer-logo-img {
    /* width: 40px; */
    height: 56px;
    border-radius: 8px;
}

.footer-logo-text {
    font-size: 24px;
    font-weight: 700;
    color: #1a1a2e;
}

.footer-description {
    color: #94a3b8;
    line-height: 1.6;
}

.footer-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #1a1a2e;
}

.contact-info p {
    color: #94a3b8;
    margin-bottom: 8px;
}

.social-links {
    display: flex;
    gap: 16px;
    margin-top: 16px;
}

.social-link {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.social-link:hover {
    color: #1a1a2e;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 20px;
    text-align: center;
    color: #94a3b8;
}

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

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .features-rows { gap: 24px; }
    .feature-row {
        grid-template-columns: 1fr;
        padding: 20px;
    }
    .feature-row.reversed .feature-text,
    .feature-row.reversed .feature-media {
        order: initial;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cta-title {
        font-size: 32px;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .feature-card {
        padding: 30px 20px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonial-card {
        padding: 30px 20px;
    }
    
    .cta-title {
        font-size: 28px;
    }
}