/* 全局样式 */
:root {
    --primary-color: #1e88e5;
    --secondary-color: #0d47a1;
    --accent-color: #ff6d00;
    --light-color: #f5f9ff;
    --dark-color: #102a43;
    --gray-color: #627d98;
    --success-color: #10b981;
}

body {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    color: var(--dark-color);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    margin-bottom: 1rem;
}

a {
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(30, 136, 229, 0.2);
}

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline-primary:hover, .btn-outline-primary:focus {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(30, 136, 229, 0.2);
}

.btn-outline-light {
    color: white;
    border-color: white;
}

.btn-outline-light:hover, .btn-outline-light:focus {
    background-color: white;
    color: var(--primary-color);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-block {
    display: block;
    width: 100%;
}

.section-title {
    margin-bottom: 2.5rem;
    position: relative;
    font-weight: 800;
}

.section-title:after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background-color: var(--primary-color);
    margin: 15px auto 0;
    border-radius: 2px;
}

section {
    padding: 5rem 0;
}

/* 导航栏 */
.navbar {
    padding: 1rem 0;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.navbar-brand img {
    transition: all 0.3s ease;
}

.navbar-nav .nav-link {
    color: var(--dark-color);
    font-weight: 600;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
    color: var(--primary-color);
}

/* 首屏区域 */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 10rem 0 6rem;
    position: relative;
    overflow: hidden;
}

.hero:before {
    content: '';
    position: absolute;
    top: -10%;
    right: -10%;
    width: 60%;
    height: 120%;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    transform: rotate(-10deg);
}

.hero-title {
    font-size: 3.2rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.hero-image {
    animation: float 6s ease-in-out infinite;
    filter: drop-shadow(0 10px 15px rgba(0, 0, 0, 0.2));
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0px); }
}

.cta-buttons {
    margin-bottom: 2rem;
}

/* 核心功能区域 */
.features {
    background-color: var(--light-color);
}

.feature-item {
    text-align: center;
    padding: 2rem;
    border-radius: 12px;
    background-color: white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    margin-bottom: 2rem;
}

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--primary-color);
    background-color: var(--light-color);
    border-radius: 50%;
}

.feature-item h3 {
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

/* 使用场景区域 */
.use-cases {
    position: relative;
}

.use-case-item {
    margin-bottom: 2rem;
    padding: 1.5rem;
    border-radius: 10px;
    background-color: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.use-case-item:hover {
    transform: translateX(10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.use-case-item h3 {
    font-size: 1.3rem;
    display: flex;
    align-items: center;
}

.use-case-item h3 i {
    color: var(--primary-color);
    margin-right: 10px;
    font-size: 1.5rem;
}

/* 多平台支持区域 */
.compatibility {
    background-color: var(--light-color);
    text-align: center;
}

.platform-icons {
    margin: 2rem 0;
}

.platform-icons i {
    font-size: 3rem;
    margin: 0 1.5rem;
    color: var(--dark-color);
    transition: all 0.3s ease;
}

.platform-icons i:hover {
    color: var(--primary-color);
    transform: scale(1.1);
}

.device-mockups {
    margin: 3rem auto;
    max-width: 80%;
    position: relative;
}

/* 全球服务器网络区域 */
.server-network {
    position: relative;
}

.world-map {
    position: relative;
    margin: 3rem auto;
    max-width: 85%;
}

.world-map:before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    background-color: var(--primary-color);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 0 10px rgba(30, 136, 229, 0.2);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(30, 136, 229, 0.5); }
    70% { box-shadow: 0 0 0 20px rgba(30, 136, 229, 0); }
    100% { box-shadow: 0 0 0 0 rgba(30, 136, 229, 0); }
}

.popular-locations {
    margin: 2rem 0;
}

.location-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    margin: 0.5rem;
    background-color: white;
    color: var(--dark-color);
    font-weight: 600;
    border-radius: 100px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.location-badge:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(30, 136, 229, 0.2);
}

/* 用户评价区域 */
.testimonials {
    background-color: var(--light-color);
}

.trust-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background-color: rgba(30, 136, 229, 0.1);
    color: var(--primary-color);
    font-weight: 700;
    border-radius: 100px;
    margin-bottom: 3rem;
}

.testimonial-card {
    background-color: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
    margin-bottom: 2rem;
    position: relative;
}

.testimonial-card:before {
    content: '"';
    position: absolute;
    top: 10px;
    left: 20px;
    font-size: 5rem;
    color: rgba(30, 136, 229, 0.1);
    font-family: Georgia, serif;
    line-height: 1;
}

.rating {
    color: var(--accent-color);
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.testimonial-text {
    font-style: italic;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.testimonial-author {
    font-weight: 700;
    color: var(--dark-color);
}

.security-badges {
    margin-top: 3rem;
}

.security-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    margin: 0.5rem;
    background-color: white;
    font-weight: 600;
    border-radius: 100px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
}

/* 价格引导区域 */
.pricing-tease {
    position: relative;
}

.pricing-cards {
    margin-bottom: 3rem;
}

.pricing-card {
    background-color: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    margin-bottom: 2rem;
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.pricing-card.featured {
    transform: scale(1.05);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    border: 2px solid var(--primary-color);
    z-index: 2;
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-10px);
}

.pricing-card .ribbon {
    position: absolute;
    top: 20px;
    right: -30px;
    background-color: var(--accent-color);
    color: white;
    padding: 0.3rem 2.5rem;
    font-weight: 700;
    transform: rotate(45deg);
    font-size: 0.9rem;
    z-index: 5;
}

.card-header {
    padding: 2rem;
    background-color: white;
    text-align: center;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.card-header h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.price {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--gray-color);
}

.save-badge {
    display: inline-block;
    padding: 0.3rem 1rem;
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    font-weight: 700;
    border-radius: 100px;
    font-size: 0.9rem;
}

.card-body {
    padding: 2rem;
}

.pricing-features {
    list-style-type: none;
    padding: 0;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 2rem;
}

.pricing-features li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: 700;
}

.money-back {
    font-weight: 600;
    color: var(--gray-color);
}

/* 最终行动召唤区域 */
.final-cta {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 5rem 0;
    position: relative;
    overflow: hidden;
}

.final-cta:before {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 60%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.final-cta:after {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 50%;
    height: 100%;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
}

.final-cta h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    position: relative;
    z-index: 2;
}

.final-cta p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    position: relative;
    z-index: 2;
}

.final-cta .btn {
    position: relative;
    z-index: 2;
}

/* 页脚 */
.footer {
    background-color: var(--dark-color);
    color: white;
    padding: 5rem 0 2rem;
}

.footer-logo {
    height: 40px;
    margin-bottom: 1.5rem;
}

.app-download {
    margin-top: 1.5rem;
}

.app-download img {
    height: 40px;
    margin-right: 1rem;
    margin-bottom: 1rem;
}

.footer h5 {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: white;
}

.footer-links {
    list-style-type: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: white;
    text-decoration: none;
    padding-left: 5px;
}

.footer-bottom {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
}

.payment-methods img {
    height: 30px;
}

.copyright {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

/* FAQ部分 */
.faq {
    background-color: white;
}

.faq-list {
    margin-top: 2rem;
}

.faq-item {
    margin-bottom: 1rem;
    border-radius: 10px;
    background-color: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.faq-question h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.faq-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer p {
    margin-bottom: 1.5rem;
    color: var(--gray-color);
}

.faq-item.active .faq-question {
    background-color: rgba(30, 136, 229, 0.05);
}

.faq-item.active .faq-question h3 {
    color: var(--primary-color);
}

.faq-item.active .faq-icon i {
    transform: rotate(180deg);
}

/* 响应式设计 */
@media (max-width: 991.98px) {
    .hero {
        padding: 8rem 0 4rem;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-image {
        margin-top: 3rem;
    }
    
    .feature-item, .pricing-card, .testimonial-card {
        margin-bottom: 2rem;
    }
    
    .pricing-card.featured {
        transform: scale(1);
    }
    
    .pricing-card.featured:hover {
        transform: translateY(-10px);
    }
    
    .use-case-item:hover {
        transform: none;
    }
}

@media (max-width: 767.98px) {
    section {
        padding: 4rem 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .platform-icons i {
        font-size: 2.5rem;
        margin: 0 1rem;
    }
    
    .final-cta h2 {
        font-size: 2rem;
    }
}

@media (max-width: 575.98px) {
    .hero {
        padding: 7rem 0 3rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
    
    .cta-buttons .btn {
        display: block;
        width: 100%;
        margin: 0.5rem 0 !important;
    }
    
    .platform-icons i {
        font-size: 2rem;
        margin: 0 0.5rem;
    }
    
    .location-badge {
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
    }
    
    .footer {
        padding: 3rem 0 2rem;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .payment-methods {
        margin-bottom: 1.5rem;
    }
}

/* SEO优化增强样式 */
.highlight-text {
    color: var(--primary-color);
    font-weight: 700;
}

.seo-feature-box {
    border-left: 4px solid var(--primary-color);
    padding-left: 1rem;
    margin: 2rem 0;
}

.seo-feature-box h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.keyword-highlight {
    background: linear-gradient(to right, rgba(30, 136, 229, 0.1), transparent);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
}