/* 全局样式 */
:root {
    --primary-color: #3498db;
    --secondary-color: #2980b9;
    --accent-color: #1abc9c;
    --text-color: #333;
    --light-text: #fff;
    --background: #f9f9f9;
    --card-bg: rgba(255, 255, 255, 0.9);
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'SF Pro Text', 'SF Pro Icons', 'Helvetica Neue', 'Helvetica', 'Arial', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 动画背景 - 增强科技感 */
.background-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.animated-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(125deg, #0f2027, #203a43, #2c5364, #192f47);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
    opacity: 0.9;
}

/* 科技网格背景 */
.animated-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 20px 20px;
    background-position: center center;
    opacity: 0.3;
}

/* 添加浮动粒子效果 */
.animated-background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        radial-gradient(circle at 80% 30%, rgba(255, 255, 255, 0.15) 1px, transparent 2px),
        radial-gradient(circle at 30% 70%, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        radial-gradient(circle at 70% 50%, rgba(255, 255, 255, 0.12) 1px, transparent 2px),
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        radial-gradient(circle at 90% 10%, rgba(255, 255, 255, 0.13) 1px, transparent 1px),
        radial-gradient(circle at 60% 90%, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
    background-size: 300px 300px;
    animation: floatingParticles 60s linear infinite;
    opacity: 0.6;
}

/* 添加动态光线效果 */
.background-container::before {
    content: '';
    position: absolute;
    width: 150%;
    height: 150%;
    top: -25%;
    left: -25%;
    background: radial-gradient(ellipse at center, rgba(29, 78, 216, 0.15) 0%, transparent 70%);
    transform-origin: center center;
    animation: rotate 30s linear infinite;
    z-index: -1;
}

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

@keyframes floatingParticles {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 300px 300px;
    }
}

@keyframes rotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* 头部样式 */
header {
    text-align: center;
    padding: 40px 20px;
    color: var(--light-text);
    position: relative;
}

/* 添加头部科技感光晕 */
header::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 80%;
    height: 60%;
    transform: translate(-50%, -50%);
    background: radial-gradient(ellipse at center, rgba(52, 152, 219, 0.2) 0%, transparent 70%);
    z-index: -1;
    filter: blur(20px);
}

.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
}

.logo {
    width: 60px;
    height: 60px;
    margin-right: 15px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

/* 添加logo发光效果 */
.logo::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        rgba(255, 255, 255, 0),
        rgba(255, 255, 255, 0.2),
        rgba(255, 255, 255, 0)
    );
    transform: rotate(45deg);
    animation: logoBlink 4s ease-in-out infinite;
}

@keyframes logoBlink {
    0% { transform: translateX(-100%) rotate(45deg); }
    50% { transform: translateX(100%) rotate(45deg); }
    100% { transform: translateX(100%) rotate(45deg); }
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    text-shadow: 0 0 10px rgba(52, 152, 219, 0.5);
}

.tagline {
    font-size: 1.2rem;
    margin-top: 10px;
    opacity: 0.9;
    text-shadow: 0 0 8px rgba(26, 188, 156, 0.5);
}

/* 主要内容 */
main {
    padding: 20px 0 80px;
}

section {
    margin-bottom: 50px;
}

h2 {
    font-size: 1.8rem;
    margin-bottom: 25px;
    color: var(--light-text);
    display: flex;
    align-items: center;
    gap: 10px;
    text-shadow: 0 0 10px rgba(26, 188, 156, 0.4);
}

h2 i {
    color: var(--accent-color);
    text-shadow: 0 0 8px rgba(26, 188, 156, 0.6);
}

/* 卡片样式 */
.support-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

/* 卡片边缘发光效果 */
.support-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 12px;
    padding: 2px;
    background: linear-gradient(45deg, 
        transparent 0%, 
        rgba(52, 152, 219, 0.3) 25%, 
        rgba(26, 188, 156, 0.3) 50%, 
        rgba(52, 152, 219, 0.3) 75%, 
        transparent 100%);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    -webkit-mask-composite: xor;
    animation: borderGlow 8s linear infinite;
}

@keyframes borderGlow {
    0% { background-position: 0% 0%; }
    100% { background-position: 200% 0%; }
}

/* 卡片内部虚线网格 */
.support-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(52, 152, 219, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(52, 152, 219, 0.05) 1px, transparent 1px);
    background-size: 20px 20px;
    z-index: -1;
    opacity: 0.5;
}

h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

h3 i {
    font-size: 1.2rem;
}

.contact-info {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 15px 0;
}

.contact-info a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    position: relative;
}

.contact-info a:hover {
    text-decoration: none;
}

/* 链接下划线动画 */
.contact-info a::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 1px;
    bottom: -2px;
    left: 0;
    background-color: var(--primary-color);
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform 0.3s ease-out;
}

.contact-info a:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

/* FAQ样式 */
.faq-item {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.faq-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0;
}

.faq-item h4 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--secondary-color);
}

/* 应用信息样式 */
.app-details {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 30px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

/* 应用卡片内部虚线网格 */
.app-details::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(52, 152, 219, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(52, 152, 219, 0.05) 1px, transparent 1px);
    background-size: 20px 20px;
    z-index: -1;
    opacity: 0.5;
}

.app-icon img {
    width: 100px;
    height: 100px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    position: relative;
    z-index: 1;
}

/* App图标发光效果 */
.app-icon {
    position: relative;
}

.app-icon::before {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    background: radial-gradient(circle at center, rgba(52, 152, 219, 0.3) 0%, transparent 70%);
    border-radius: 30px;
    z-index: 0;
    animation: iconPulse 3s ease-in-out infinite;
}

@keyframes iconPulse {
    0% { opacity: 0.3; transform: scale(0.95); }
    50% { opacity: 0.6; transform: scale(1.05); }
    100% { opacity: 0.3; transform: scale(0.95); }
}

.app-description {
    flex: 1;
}

.app-store-badge {
    margin-top: 20px;
}

.app-store-badge img {
    height: 40px;
    transition: transform 0.3s ease;
}

.app-store-badge img:hover {
    transform: scale(1.05);
}

/* 页脚样式 */
footer {
    background: rgba(0, 0, 0, 0.5);
    color: var(--light-text);
    text-align: center;
    padding: 25px 0;
    position: relative;
    margin-top: 40px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.footer-links {
    margin-top: 15px;
    display: flex;
    justify-content: center;
    gap: 20px;
}

.footer-links a {
    color: var(--light-text);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s;
    position: relative;
}

.footer-links a:hover {
    opacity: 1;
}

/* 链接下划线动画 */
.footer-links a::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 1px;
    bottom: -2px;
    left: 0;
    background-color: var(--light-text);
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform 0.3s ease-out;
}

.footer-links a:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .app-details {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    h3 {
        font-size: 1.2rem;
    }
    
    .app-description {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        width: 95%;
        padding: 15px;
    }
    
    header {
        padding: 30px 15px;
    }
    
    .logo {
        width: 50px;
        height: 50px;
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    h2 {
        font-size: 1.3rem;
    }
    
    .support-card {
        padding: 20px;
    }
    
    .app-icon img {
        width: 80px;
        height: 80px;
    }
}