/* ===== 下载页面专属样式 ===== */

/* 下载Hero区域 */
.download-hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    position: relative;
    overflow: hidden;
}

.download-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 40% 50%, rgba(0, 191, 255, 0.15) 0%, transparent 60%),
        radial-gradient(circle at 60% 50%, rgba(157, 78, 221, 0.15) 0%, transparent 60%);
    z-index: -1;
}

.download-hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.download-hero-content {
    text-align: center;
}

.download-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 191, 255, 0.15);
    border: 1px solid rgba(0, 191, 255, 0.4);
    padding: 10px 25px;
    border-radius: 25px;
    font-size: 14px;
    color: var(--primary-blue);
    margin-bottom: 30px;
    animation: pulse 2s ease-in-out infinite;
}

.download-hero h1 {
    font-size: 56px;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #00BFFF 0%, #9D4EDD 50%, #FF1493 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.download-subtitle {
    font-size: 20px;
    color: #a0a8d4;
    margin-bottom: 40px;
}

.download-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.btn-glow {
    animation: glow 2s ease-in-out infinite;
    box-shadow: 0 0 30px rgba(0, 191, 255, 0.5);
}

.btn-glow:hover {
    box-shadow: 0 0 50px rgba(0, 191, 255, 0.8);
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 30px rgba(0, 191, 255, 0.5); }
    50% { box-shadow: 0 0 50px rgba(0, 191, 255, 0.8); }
}

.download-meta {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

.meta-item {
    background: rgba(157, 78, 221, 0.1);
    border: 1px solid rgba(157, 78, 221, 0.3);
    padding: 10px 20px;
    border-radius: 20px;
    font-size: 14px;
    color: #a0a8d4;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.meta-item:hover {
    background: rgba(157, 78, 221, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(157, 78, 221, 0.3);
}

.meta-item i {
    color: var(--primary-purple);
    font-size: 18px;
}

.download-info {
    font-size: 14px;
    color: #7a8bbd;
    display: flex;
    align-items: center;
    gap: 15px;
}

.download-info i {
    color: var(--primary-blue);
}

/* 下载视觉动画 */
.download-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.download-animation {
    position: relative;
    width: 300px;
    height: 300px;
}

.pulse-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    border: 3px solid rgba(0, 191, 255, 0.3);
    border-radius: 50%;
    animation: pulse-ring 3s ease-in-out infinite;
}

.pulse-ring-2 {
    width: 280px;
    height: 280px;
    animation-delay: 1s;
    border-color: rgba(157, 78, 221, 0.3);
}

@keyframes pulse-ring {
    0% { transform: translate(-50%, -50%) scale(0.8); opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(1.5); opacity: 0; }
}

.download-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, #00BFFF 0%, #9D4EDD 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 50px;
    color: white;
    box-shadow: 0 0 50px rgba(0, 191, 255, 0.6);
    animation: float 3s ease-in-out infinite;
}

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

/* 系统要求区域 */
.system-req {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.req-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin-top: 50px;
}

.req-card {
    background: var(--bg-tertiary);
    padding: 35px 25px;
    border-radius: 20px;
    border: 1px solid rgba(157, 78, 221, 0.3);
    text-align: center;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.req-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #00BFFF, #9D4EDD);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.req-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4), 0 0 30px rgba(0, 191, 255, 0.3);
}

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

.req-icon {
    width: 70px;
    height: 70px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 30px;
    color: white;
}

.req-icon-1 {
    background: linear-gradient(135deg, #00BFFF 0%, #0099CC 100%);
    box-shadow: 0 0 20px rgba(0, 191, 255, 0.4);
}

.req-icon-2 {
    background: linear-gradient(135deg, #9D4EDD 0%, #7B2CBF 100%);
    box-shadow: 0 0 20px rgba(157, 78, 221, 0.4);
}

.req-icon-3 {
    background: linear-gradient(135deg, #00FFFF 0%, #008080 100%);
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.4);
}

.req-icon-4 {
    background: linear-gradient(135deg, #FF1493 0%, #C71585 100%);
    box-shadow: 0 0 20px rgba(255, 20, 147, 0.4);
}

.req-card h3 {
    font-size: 22px;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.req-card > p {
    color: #a0a8d4;
    font-size: 14px;
    margin-bottom: 20px;
}

.req-list {
    list-style: none;
    text-align: left;
}

.req-list li {
    padding: 8px 0;
    color: #a0a8d4;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.req-list li i {
    color: var(--primary-blue);
    font-size: 14px;
}

/* 功能亮点区域 */
.features-highlight {
    padding: 100px 0;
    position: relative;
}

.features-highlight::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 15% 20%, rgba(157, 78, 221, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 85% 80%, rgba(0, 191, 255, 0.05) 0%, transparent 50%);
}

.features-highlight .features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.feature-item {
    background: var(--bg-secondary);
    padding: 40px 30px;
    border-radius: 20px;
    border: 1px solid rgba(0, 191, 255, 0.2);
    text-align: center;
    transition: all 0.4s ease;
}

.feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #00BFFF, #9D4EDD);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4), 0 0 30px rgba(0, 191, 255, 0.3);
    border-color: rgba(0, 191, 255, 0.4);
}

.feature-item:hover::before {
    transform: scaleX(1);
}

.feature-item {
    position: relative;
    overflow: hidden;
}

.feature-item .feature-icon {
    width: 75px;
    height: 75px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 32px;
    color: white;
    position: relative;
}

.feature-icon-1 {
    background: linear-gradient(135deg, #00BFFF 0%, #0099CC 100%);
    box-shadow: 0 5px 20px rgba(0, 191, 255, 0.4);
}

.feature-icon-2 {
    background: linear-gradient(135deg, #9D4EDD 0%, #7B2CBF 100%);
    box-shadow: 0 5px 20px rgba(157, 78, 221, 0.4);
}

.feature-icon-3 {
    background: linear-gradient(135deg, #00FFFF 0%, #008080 100%);
    box-shadow: 0 5px 20px rgba(0, 255, 255, 0.4);
}

.feature-icon-4 {
    background: linear-gradient(135deg, #FF1493 0%, #C71585 100%);
    box-shadow: 0 5px 20px rgba(255, 20, 147, 0.4);
}

.feature-icon-5 {
    background: linear-gradient(135deg, #8A2BE2 0%, #4B0082 100%);
    box-shadow: 0 5px 20px rgba(138, 43, 226, 0.4);
}

.feature-icon-6 {
    background: linear-gradient(135deg, #00BFFF 0%, #1E90FF 100%);
    box-shadow: 0 5px 20px rgba(0, 191, 255, 0.4);
}

.feature-item h3 {
    font-size: 22px;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.feature-item p {
    color: #a0a8d4;
    font-size: 15px;
    line-height: 1.7;
}

/* 安装指南区域 */
.install-guide {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 50px;
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    font-size: 60px;
    font-weight: bold;
    background: linear-gradient(135deg, #00BFFF, #9D4EDD);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.15;
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 0;
}

.step-icon {
    width: 80px;
    height: 80px;
    background: var(--bg-tertiary);
    border: 2px solid rgba(0, 191, 255, 0.3);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 32px;
    color: var(--primary-blue);
    position: relative;
    z-index: 1;
    transition: all 0.3s ease;
}

.step:hover .step-icon {
    background: linear-gradient(135deg, #00BFFF 0%, #9D4EDD 100%);
    color: white;
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 191, 255, 0.4);
}

.step h3 {
    font-size: 22px;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.step p {
    color: #a0a8d4;
    font-size: 15px;
    line-height: 1.6;
}

/* 常见问题区域 */
.download-faq {
    padding: 100px 0;
}

.download-faq .faq-list {
    max-width: 900px;
    margin: 50px auto 0;
}

.download-faq .faq-item {
    background: var(--bg-secondary);
    margin-bottom: 15px;
    border-radius: 15px;
    border: 1px solid rgba(157, 78, 221, 0.3);
    overflow: hidden;
}

.download-faq .faq-question {
    padding: 25px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background 0.3s ease;
}

.download-faq .faq-question:hover {
    background: rgba(157, 78, 221, 0.1);
}

.download-faq .faq-question h4 {
    font-size: 18px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 12px;
}

.download-faq .faq-question h4 i {
    color: var(--primary-purple);
    font-size: 20px;
}

.download-faq .faq-answer p {
    padding: 0 30px 25px;
    color: #a0a8d4;
    line-height: 1.8;
    font-size: 15px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .download-hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .download-visual {
        display: none;
    }
    
    .req-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-highlight .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .download-hero h1 {
        font-size: 40px;
    }
    
    .download-subtitle {
        font-size: 16px;
    }
    
    .req-grid {
        grid-template-columns: 1fr;
    }
    
    .features-highlight .features-grid {
        grid-template-columns: 1fr;
    }
    
    .steps {
        grid-template-columns: 1fr;
    }
    
    .download-meta {
        flex-direction: column;
        gap: 10px;
    }
}