/* 重置默认样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 基础样式 */
:root {
    --primary: #8a2be2;
    --primary-dark: #6a1cb9;
    --secondary: #00bfff;
    --accent: #ff6b6b;
    --accent-dark: #ff2e2e;
    --background: #121212;
    --card-bg: #1e1e1e;
    --text: #f0f0f0;
    --text-secondary: #b0b0b0;
    --border: #333;
    --success: #00ff9d;
    --warning: #ffd166;
    --danger: #ff6b6b;
    --neon-shadow: 0 0 10px rgba(138, 43, 226, 0.7);
    --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background: var(--background);
    color: var(--text);
    line-height: 1.7;
    min-height: 100vh;
    padding: 0;
    margin: 0;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(138, 43, 226, 0.1) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(0, 191, 255, 0.1) 0%, transparent 20%);
    overflow-x: hidden;
}

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

/* 头部样式 */
.header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 80px 20px;
    margin-bottom: 40px;
    border-radius: 0 0 20px 20px;
    text-align: center;
    box-shadow: var(--neon-shadow);
    position: relative;
    overflow: hidden;
    animation: gradientShift 10s infinite alternate;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

.header::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, rgba(255,255,255,0) 70%);
    transform: rotate(30deg);
    animation: shine 8s infinite;
}

@keyframes shine {
    0% { transform: rotate(30deg) translateX(-100%); }
    100% { transform: rotate(30deg) translateX(100%); }
}

.header-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.header h1 {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 20px;
    letter-spacing: -1px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
    background: linear-gradient(to right, #fff, #ffd700);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: textGlow 3s infinite alternate;
}

@keyframes textGlow {
    0% { filter: brightness(1); }
    100% { filter: brightness(1.3); }
}

.subtitle {
    font-size: 1.4rem;
    opacity: 0.95;
    font-weight: 400;
    max-width: 600px;
    margin: 0 auto;
    text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

/* 新增包装器样式 */
.intro-wrapper, .contact-wrapper {
    margin-bottom: 30px;
}

.policy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

/* 卡片样式 */
.card {
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: var(--transition);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

.card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: 0 15px 40px rgba(138, 43, 226, 0.4);
}

.card:hover::before {
    transform: scaleX(1);
}

.card-highlight {
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.15), rgba(255, 46, 46, 0.2));
    border: 1px solid rgba(255, 107, 107, 0.3);
    border-radius: 12px;
    padding: 25px;
    margin: 30px 0;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(255, 107, 107, 0.2);
}

.card-highlight::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.card-highlight:hover::before {
    transform: translateX(100%);
}

.card-highlight strong {
    color: var(--accent);
    font-size: 1.1rem;
}

/* 内容区域 */
.policy-section h2 {
    color: var(--secondary);
    margin-bottom: 0;
    font-size: 2.2rem;
    font-weight: 800;
    padding-bottom: 0;
    position: relative;
    display: inline-block;
}

.policy-section h3 {
    margin: 30px 0 20px;
    color: var(--accent);
    font-size: 1.6rem;
    font-weight: 700;
}

.policy-section p {
    margin-bottom: 20px;
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
}

.policy-section p.intro-text {
    font-size: 1.2rem;
    line-height: 1.9;
    color: var(--text);
    font-weight: 500;
}

/* 列表样式 */
.modern-list {
    list-style: none;
    margin: 25px 0;
}

.modern-list li {
    padding: 15px 0 15px 40px;
    position: relative;
    margin-bottom: 12px;
    border-radius: 8px;
    transition: var(--transition);
}

.modern-list li:hover {
    background: rgba(138, 43, 226, 0.1);
    transform: translateX(5px);
}

.modern-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 15px;
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, var(--success), #00cc7a);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #000;
    font-weight: bold;
    font-size: 1.1rem;
    box-shadow: 0 3px 10px rgba(0, 255, 157, 0.3);
}

/* 网格布局 */
.data-grid, .security-grid, .info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 25px 0;
}

.data-card, .security-card, .info-card {
    background: rgba(138, 43, 226, 0.1);
    border-radius: 16px;
    padding: 25px 20px;
    transition: var(--transition);
    border: 1px solid rgba(138, 43, 226, 0.2);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.data-card:hover, .security-card:hover, .info-card:hover {
    background: rgba(138, 43, 226, 0.2);
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(138, 43, 226, 0.3);
    border: 1px solid rgba(138, 43, 226, 0.5);
}

.data-card::before, .security-card::before, .info-card::before {
    content: "";
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--primary), var(--secondary), var(--accent), var(--primary));
    z-index: -1;
    border-radius: 18px;
    animation: borderAnimation 3s linear infinite;
    background-size: 300% 300%;
}

@keyframes borderAnimation {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.data-icon, .security-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
    filter: drop-shadow(0 0 8px rgba(138, 43, 226, 0.7));
}

.data-content, .security-content {
    font-size: 1rem;
    color: var(--text);
    line-height: 1.6;
    font-weight: 500;
}

/* 联系区域 */
.contact-section {
    text-align: center;
    background: linear-gradient(135deg, rgba(138, 43, 226, 0.1), rgba(0, 191, 255, 0.1));
    border-radius: 16px;
    position: relative;
    overflow: hidden;
}

.contact-section::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(255,255,255,0.1) 0%, transparent 20%),
        radial-gradient(circle at 80% 70%, rgba(255,255,255,0.1) 0%, transparent 20%);
}

.contact-section h2 {
    color: var(--secondary);
    margin-bottom: 0;
    font-size: 2rem;
    position: relative;
}

.contact-content {
    padding: 20px 0;
}

.contact-info {
    display: inline-flex;
    align-items: center;
    gap: 15px;
    margin: 25px 0;
    padding: 20px 35px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 50px;
    box-shadow: 0 10px 25px rgba(138, 43, 226, 0.4);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    z-index: 2;
}

.contact-info:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 15px 35px rgba(138, 43, 226, 0.6);
}

.contact-icon {
    font-size: 2.2rem;
    color: white;
    filter: drop-shadow(0 0 5px rgba(255,255,255,0.5));
}

.contact-info a {
    color: white;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.3rem;
    letter-spacing: 0.5px;
}

.contact-info a:hover {
    text-decoration: underline;
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 40px 0 20px;
    color: var(--text-secondary);
    font-size: 1rem;
    background: rgba(30, 30, 30, 0.7);
    border-radius: 16px 16px 0 0;
    margin-top: 30px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.last-updated {
    margin-top: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.highlight-box {
    background: rgba(255, 107, 107, 0.1);
    border-radius: 16px;
    padding: 30px;
    margin: 30px 0;
    border: 1px solid rgba(255, 107, 107, 0.3);
    position: relative;
    overflow: hidden;
}

.highlight-box::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    transform: translateX(-100%);
    transition: 0.5s;
}

.highlight-box:hover::before {
    transform: translateX(100%);
}

.highlight-box h4 {
    color: var(--accent);
    margin-bottom: 20px;
    font-size: 1.5rem;
    position: relative;
    display: inline-block;
}

.highlight-box h4::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .header h1 {
        font-size: 2.8rem;
    }
    
    .policy-grid {
        grid-template-columns: 1fr;
    }
    
    .data-grid, .security-grid, .info-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .header {
        padding: 60px 15px;
    }
    
    .header h1 {
        font-size: 2.4rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }
    
    .card {
        padding: 25px 20px;
    }
    
    .policy-section h2 {
        font-size: 1.8rem;
    }
    
    .section-header {
        flex-direction: column;
        text-align: center;
    }
    
    .section-icon {
        margin-right: 0;
        margin-bottom: 15px;
    }
    
    .data-grid, .security-grid, .info-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .data-card, .security-card, .info-card {
        padding: 25px 20px;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .card {
        padding: 20px 15px;
    }
    
    .policy-section h2 {
        font-size: 1.6rem;
    }
    
    .contact-info {
        padding: 15px 25px;
        flex-direction: column;
    }
    
    .contact-icon {
        font-size: 1.8rem;
    }
    
    .contact-info a {
        font-size: 1.1rem;
    }
    
    .policy-grid {
        gap: 20px;
    }
}