/* 全局样式与CSS变量 */
:root {
    --primary-color: #2c66ff;
    --secondary-color: #4080ff;
    --accent-color: #ff6b35;
    --success-color: #36b37e;
    --danger-color: #ff5630;
    --dark-bg: #0b0e17;
    --dark-card: #141a2b;
    --dark-text: #212b36;
    --light-text: #f5f7fa;
    --gray-text: #8898aa;
    --border-color: #2a3a51;
    --section-padding: 80px 0;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', sans-serif;
    line-height: 1.6;
    color: var(--dark-text);
    background-color: #ffffff;
    overflow-x: hidden;
}

/* 基础排版 */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--dark-text);
}

h1 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    position: relative;
}

h3 {
    font-size: 1.6rem;
    margin-bottom: 1rem;
}

h4 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
}

p {
    margin-bottom: 1.2rem;
    font-size: 1.05rem;
}

ul, ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

li {
    margin-bottom: 0.5rem;
}

/* 链接样式 */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--secondary-color);
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    outline: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(44, 102, 255, 0.2);
}

.btn-secondary {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
}

.btn-accent {
    background-color: var(--accent-color);
    color: white;
}

.btn-accent:hover {
    background-color: #ff8357;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 107, 53, 0.2);
}

/* 容器样式 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部导航样式 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-text);
}

.logo img {
    width: 40px;
    height: 40px;
    margin-right: 10px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: var(--dark-text);
    font-weight: 500;
    font-size: 1rem;
    padding: 8px 0;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

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

.nav-links a:hover, .nav-links a.active {
    color: var(--primary-color);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark-text);
}

/* 英雄区域样式 */
.hero {
    padding: 150px 0 120px;
    background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

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

.hero-text {
    flex: 1;
    max-width: 500px;
}

.hero-title {
    font-size: 3.2rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--dark-text);
}

.hero-title span {
    color: var(--primary-color);
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--gray-text);
}

.hero-cta {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
    100% {
        transform: translateY(0px);
    }
}

/* 特点区域样式 */
.features {
    padding: var(--section-padding);
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    display: inline-block;
    margin-bottom: 15px;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

.section-title p {
    max-width: 600px;
    margin: 0 auto;
    color: var(--gray-text);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: #ffffff;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background-color: rgba(44, 102, 255, 0.1);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--primary-color);
    font-size: 2rem;
}

.feature-card h3 {
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--gray-text);
}

/* 安全与隐私区域样式 */
.security-privacy {
    padding: var(--section-padding);
    background-color: #f8fafc;
}

.security-privacy-container {
    display: flex;
    align-items: center;
    gap: 60px;
}

.security-image {
    flex: 1;
}

.security-image img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
}

.security-content {
    flex: 1;
}

.security-content h2 {
    margin-bottom: 20px;
}

.security-list {
    margin-bottom: 30px;
}

.security-list li {
    margin-bottom: 15px;
    display: flex;
    align-items: flex-start;
}

.security-list li i {
    color: var(--success-color);
    margin-right: 10px;
    margin-top: 5px;
}

/* 服务器区域样式 */
.servers {
    padding: var(--section-padding);
}

.server-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.server-stat {
    text-align: center;
    background-color: #ffffff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.server-stat:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.server-stat i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.server-stat h4 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.server-stat p {
    color: var(--gray-text);
    margin-bottom: 0;
}

/* 价格区域样式 */
.pricing {
    padding: var(--section-padding);
    background-color: #f8fafc;
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.pricing-card {
    background-color: #ffffff;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.pricing-card.popular {
    border: 2px solid var(--primary-color);
}

.pricing-card.popular::before {
    content: '最受欢迎';
    position: absolute;
    top: 20px;
    right: -40px;
    background-color: var(--accent-color);
    color: white;
    padding: 5px 40px;
    transform: rotate(45deg);
    font-size: 0.8rem;
    font-weight: 600;
}

.pricing-card h3 {
    margin-bottom: 20px;
}

.pricing-amount {
    margin-bottom: 20px;
}

.pricing-amount .price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.pricing-amount .period {
    color: var(--gray-text);
    margin-left: 5px;
}

.pricing-features {
    margin-bottom: 30px;
}

.pricing-features li {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
}

.pricing-features li i {
    color: var(--success-color);
    margin-right: 10px;
}

.pricing-features li.disabled {
    color: var(--gray-text);
}

.pricing-features li.disabled i {
    color: var(--gray-text);
}

/* 下载区域样式 */
.download {
    padding: var(--section-padding);
    background-color: var(--primary-color);
    color: white;
}

.download h2 {
    color: white;
}

.download h2::after {
    background-color: white;
}

.download-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.download-card {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.download-card:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
}

.download-card i {
    font-size: 3rem;
    margin-bottom: 20px;
}

.download-card h3 {
    color: white;
    margin-bottom: 15px;
}

.download-card p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 20px;
}

.download-card .btn {
    background-color: white;
    color: var(--primary-color);
}

.download-card .btn:hover {
    background-color: rgba(255, 255, 255, 0.9);
}

/* 页脚样式 */
.footer {
    background-color: var(--dark-bg);
    color: var(--light-text);
    padding: 80px 0 40px;
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    display: inline-block;
}

.footer-logo img {
    height: 28px;
    margin-right: 10px;
    vertical-align: middle;
}

.footer-desc {
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: var(--transition);
}

.footer-social a:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
}

.footer-heading {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background-color: var(--primary-color);
}

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

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom a {
    color: var(--primary-color);
}

/* FAQ页面样式 */
.faq-hero {
    padding: 150px 0 80px;
    background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%);
    text-align: center;
}

.faq-content {
    padding: 80px 0;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: 12px;
    margin-bottom: 20px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.faq-question {
    padding: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #ffffff;
    font-weight: 600;
    transition: var(--transition);
}

.faq-question:hover {
    background-color: #f8fafc;
}

.faq-question i {
    transition: var(--transition);
    color: var(--primary-color);
}

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

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
    background-color: #ffffff;
}

.faq-item.active .faq-answer {
    padding: 0 20px 20px;
    max-height: 500px;
}

/* 更新公告页面样式 */
.updates-hero {
    padding: 150px 0 80px;
    background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%);
    text-align: center;
}

.updates-content {
    padding: 80px 0;
}

.update-item {
    background-color: #ffffff;
    border-radius: 12px;
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.update-item:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.update-date {
    display: inline-block;
    background-color: rgba(44, 102, 255, 0.1);
    color: var(--primary-color);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.update-title {
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.update-changelog {
    margin-bottom: 20px;
}

.update-changelog h4 {
    margin-bottom: 10px;
    color: var(--dark-text);
}

.update-changelog ul {
    margin-bottom: 15px;
}

/* 联系方式页面样式 */
.contact-hero {
    padding: 150px 0 80px;
    background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%);
    text-align: center;
}

.contact-content {
    padding: 80px 0;
}

.contact-container {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
}

.contact-info {
    flex: 1;
    min-width: 300px;
}

.contact-form {
    flex: 1;
    min-width: 300px;
    background-color: #ffffff;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background-color: rgba(44, 102, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-right: 20px;
    flex-shrink: 0;
}

.contact-details h4 {
    margin-bottom: 10px;
}

.contact-details p {
    color: var(--gray-text);
    margin-bottom: 5px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark-text);
}

.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    background-color: #ffffff;
}

.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(44, 102, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-text {
        margin-bottom: 50px;
    }
    
    .security-privacy-container {
        flex-direction: column;
    }
    
    .security-image, .security-content {
        width: 100%;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: white;
        padding: 20px;
        gap: 15px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        transform: translateY(-150%);
        transition: var(--transition);
        z-index: 999;
    }
    
    .nav-links.active {
        transform: translateY(0);
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .section-padding {
        padding: 60px 0;
    }
    
    .pricing-card, .download-card, .update-item {
        padding: 30px;
    }
    
    .footer-container {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.8rem;
    }
    
    h2 {
        font-size: 1.6rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .section-padding {
        padding: 40px 0;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        padding: 30px 20px;
    }
}