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

body {
    font-family: 'Orbitron', 'Rajdhani', sans-serif;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
    color: #e0e0e0;
    line-height: 1.6;
    position: relative;
    overflow-x: hidden;
}

/* 背景网格效果 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(25, 118, 210, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(25, 118, 210, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -1;
    animation: gridMove 20s linear infinite;
}

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

/* 顶部导航栏 */
.header {
    background: linear-gradient(90deg, #1a1a2e 0%, #16213e 100%);
    padding: 25px 0;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 255, 255, 0.2);
    margin-bottom: 40px;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00ffff, transparent);
    animation: neonLine 3s linear infinite;
}

@keyframes neonLine {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

.header-title {
    font-size: 32px;
    font-weight: 800;
    color: #00ffff;
    text-shadow: 0 0 20px rgba(0, 255, 255, 0.8);
    letter-spacing: 3px;
}

/* 主内容区域 */
.content {
    padding: 0 20px 40px;
}

/* 功能卡片区域 */
.feature-section {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 25px;
    margin-bottom: 50px;
}

.feature-card {
    flex: 1 1 auto;
    max-width: 100%;
    min-width: 250px;
    background: linear-gradient(135deg, #16213e 0%, #0f3460 100%);
    border-radius: 15px;
    padding: 20px 25px;
    box-shadow: 0 4px 20px rgba(0, 255, 255, 0.15);
    transition: all 0.3s ease;
    text-align: center;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 255, 255, 0.2);
    min-height: auto;
    height: auto;
    display: block;
}

.feature-card .feature-title {
    margin: 0 0 20px 0;
}

.feature-card .feature-tags {
    margin: 0;
}

/* 横向布局 */
.feature-card.horizontal-layout {
    display: flex;
    align-items: center;
    text-align: left;
    padding: 20px 25px;
}

.feature-card.horizontal-layout .feature-icon {
    margin: 0 20px 0 0;
    flex-shrink: 0;
}

.feature-card.horizontal-layout .feature-content {
    flex: 1;
}

.feature-card.horizontal-layout .feature-title {
    margin-bottom: 10px;
}

/* WIFI 连接样式 */
.wifi-info {
    margin: 0;
}

.wifi-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding: 10px;
    background: rgba(0, 255, 255, 0.05);
    border-radius: 10px;
    border: 1px solid rgba(0, 255, 255, 0.1);
}

.wifi-item label {
    font-size: 14px;
    color: #b0b0b0;
    font-weight: 600;
}

.wifi-value {
    display: flex;
    align-items: center;
    gap: 10px;
}

.wifi-value span {
    font-size: 14px;
    color: #00ffff;
    font-weight: 600;
    text-shadow: 0 0 8px rgba(0, 255, 255, 0.6);
}

.copy-btn {
    background: rgba(0, 255, 255, 0.1);
    border: 1px solid rgba(0, 255, 255, 0.3);
    color: #00ffff;
    padding: 5px 10px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.copy-btn:hover {
    background: rgba(0, 255, 255, 0.2);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.4);
}

.connect-btn {
    width: 100%;
    background: linear-gradient(135deg, #00ffff, #0f3460);
    color: #16213e;
    border: none;
    padding: 12px 20px;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 255, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 10px;
}

.connect-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 255, 255, 0.5);
    background: linear-gradient(135deg, #00cccc, #00ffff);
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.8);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 255, 0.1), transparent);
    transition: all 0.6s ease;
}

.feature-card:hover::before {
    left: 100%;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 30px rgba(0, 255, 255, 0.3);
    border: 1px solid rgba(0, 255, 255, 0.5);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #0f3460, #16213e);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 28px;
    color: #00ffff;
    text-shadow: 0 0 15px rgba(0, 255, 255, 0.8);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 255, 255, 0.3);
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
}

.feature-card:hover .feature-icon {
    transform: scale(1.15) rotate(5deg);
    background: linear-gradient(135deg, #00ffff, #0f3460);
    color: #16213e;
    box-shadow: 0 0 30px rgba(0, 255, 255, 0.5);
}

.feature-title {
    font-size: 22px;
    font-weight: 700;
    color: #00ffff;
    margin-bottom: 20px;
    line-height: 1.3;
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.6);
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.feature-title i {
    font-size: 24px;
    text-shadow: 0 0 15px rgba(0, 255, 255, 0.8);
}

.feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

/* 横向标签布局 */
.feature-tags.horizontal-tags {
    justify-content: space-between;
}

.feature-tags.horizontal-tags .tag {
    flex: 1;
    min-width: 100px;
    text-align: center;
    justify-content: center;
    margin: 0 5px;
}

/* 微信营销卡片样式 */
.feature-card.wechat-card {
    padding: 30px 20px;
    min-height: auto;
    height: auto;
    text-align: center;
    display: block;
    border: 1px solid rgba(0, 255, 255, 0.2);
    margin: 0;
}

.feature-card.wechat-card .feature-title {
    margin: 0 0 20px 0;
}

.feature-card.wechat-card .feature-tags {
    margin: 0;
}

/* 微信营销卡片响应式样式 */
@media (max-width: 768px) {
    .feature-card.wechat-card {
        padding: 30px 20px;
    }
}

.tag {
    background: linear-gradient(135deg, rgba(0, 255, 255, 0.1), rgba(0, 255, 255, 0.05));
    color: #00ffff;
    padding: 8px 16px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    border: 1px solid rgba(0, 255, 255, 0.3);
    transition: all 0.3s ease;
    text-shadow: 0 0 8px rgba(0, 255, 255, 0.6);
    display: flex;
    align-items: center;
    gap: 6px;
}

.tag i {
    font-size: 12px;
    text-shadow: 0 0 8px rgba(0, 255, 255, 0.8);
}

.tag:hover {
    background: linear-gradient(135deg, #00ffff, #00cccc);
    color: #16213e;
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0, 255, 255, 0.4);
    text-shadow: none;
}

/* 立即获取按钮 */
.action-section {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.get-btn {
    background: linear-gradient(135deg, #00ffff, #0f3460);
    color: #16213e;
    border: none;
    padding: 20px 60px;
    border-radius: 50px;
    font-size: 22px;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 30px rgba(0, 255, 255, 0.4);
    position: relative;
    overflow: hidden;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.get-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: all 0.6s ease;
}

.get-btn:hover::before {
    left: 100%;
}

.get-btn:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0, 255, 255, 0.6);
    background: linear-gradient(135deg, #00cccc, #00ffff);
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.8);
}

/* 免责声明 */
.disclaimer {
    background: linear-gradient(135deg, rgba(15, 52, 96, 0.8), rgba(22, 33, 62, 0.8));
    padding: 25px;
    border-radius: 15px;
    font-size: 14px;
    color: #b0b0b0;
    line-height: 1.6;
    border: 1px solid rgba(0, 255, 255, 0.2);
    box-shadow: 0 4px 20px rgba(0, 255, 255, 0.1);
}

.disclaimer p {
    text-align: justify;
    text-shadow: 0 0 5px rgba(0, 255, 255, 0.3);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header {
        padding: 20px 0;
        margin-bottom: 30px;
    }
    
    .header-title {
        font-size: 26px;
        letter-spacing: 2px;
    }
    
    .content {
        padding: 0 15px 40px;
    }
    
    .feature-section {
        flex-direction: column;
        align-items: center;
        gap: 20px;
        margin-bottom: 40px;
    }
    
    .feature-card {
        width: 100%;
        max-width: 400px;
        padding: 30px 20px;
    }
    
    .feature-icon {
        width: 60px;
        height: 60px;
        font-size: 24px;
        margin-bottom: 20px;
    }
    
    .feature-title {
        font-size: 20px;
        margin-bottom: 15px;
    }
    
    .tag {
        font-size: 13px;
        padding: 6px 14px;
    }
    
    .get-btn {
        padding: 18px 50px;
        font-size: 20px;
        letter-spacing: 1px;
    }
    
    .disclaimer {
        padding: 20px;
        font-size: 13px;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .feature-section {
        justify-content: space-between;
    }
    
    .feature-card {
        flex: 1 1 calc(50% - 12.5px);
        max-width: calc(50% - 12.5px);
    }
}

@media (min-width: 1025px) {
    .feature-section {
        justify-content: space-between;
    }
    
    .feature-card {
        flex: 1 1 calc(33.333% - 16.666px);
        max-width: calc(33.333% - 16.666px);
    }
}