/* 公司简介 */
.about {
    /* position: relative; */
    padding: 100px 20px;
    background: linear-gradient(160deg, #0a0a2a 0%, #00001a 100%);
    transform: translateZ(0);
    margin-top: 50px;
    /* padding-bottom: 300px; */
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    perspective: 1000px;
    cursor: pointer;
}

.about-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 25px;
    border-radius: 15px;
    border: 1px solid rgba(0, 247, 255, 0.2);
    transform-style: preserve-3d;
    transition: all 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    cursor: pointer;
}

.about-item:hover {
    transform: translateY(-10px) rotateX(5deg);
    box-shadow: 0 10px 30px rgba(0, 247, 255, 0.2);
}

/* .about-item::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, 
        transparent 25%,
        rgba(0, 247, 255, 0.1) 50%,
        transparent 75%);
    animation: gridFlow 4s infinite linear;
}

@keyframes gridFlow {
    100% {
        transform: rotate(360deg);
    }
} */

.about-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    border-radius: 8px;
    position: relative;
    z-index: 1;
    mix-blend-mode: luminosity;
    transition: all 0.5s;
}

.about-item:hover img {
    mix-blend-mode: normal;
    transform: scale(1.05);
}

.about-item h3 {
    margin: 20px 0 15px;
    color: var(--primary-color);
    font-size: 1.5em;
}

.about-item p {
    color: #ddd;
    line-height: 1.8;
    font-size: 0.95em;
}

/* 指示点样式 */
.dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 15px;
    z-index: 2;
}

.dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid var(--primary-color);
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: var(--glow-effect);
}

.dot.active {
    background: var(--primary-color);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.2);
    }
}

/* 左右箭头 */
.arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: white;
    font-size: 40px;
    cursor: pointer;
    padding: 15px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 50%;
    user-select: none;
    z-index: 2;
    transition: all 0.3s;
    display: none;
}

.arrow:hover {
    background: rgba(0, 247, 255, 0.3);
    transform: translateY(-50%) scale(1.1);
  
}

.prev {
    left: 30px;
}

.next {
    right: 30px;
}

/* 装饰线条 */
.deco-line {
    position: fixed;
    background: var(--primary-color);
    box-shadow: var(--glow-effect);
    pointer-events: none;
}

.horizontal-line {
    width: 100%;
    height: 1px;
    top: 100px;
}

.vertical-line {
    width: 1px;
    height: 100%;
    top: 0;
}

@media (max-width: 768px) {
    header {
        padding: 15px 20px;
    }

    .nav {
        display: none;
    }

    .carousel {
        height: 400px;
        margin-top: 80px;
    }

    .arrow {
        font-size: 30px;
        padding: 10px;
    }
}
.section-header {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
}

.section-header h2 {
    font-size: 2.5em;
    color: var(--primary-color);
    margin-bottom: 20px;
    text-shadow: var(--glow-effect);
}

.deco-line {
    /* width: 100%; */
    height: 2px;
    background: var(--primary-color);
    margin: 0 auto;
    box-shadow: var(--glow-effect);
}
.download-section {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin: 3rem 0;
}

.download-card {
    padding: 2rem;
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.download-card.android {
    /* border-left: 6px solid #3ddc84; */
}

.download-card.ios.disabled {
    background: rgba(255, 255, 255, 0.05);
    /* border-left: 6px solid #e0e0e0; */
}

.os-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.download-button {
    background: linear-gradient(135deg, #2a4d8e, #1a3353);
    color: white;
    padding: 1rem 2rem;
    border-radius: 30px;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.3s;
}

.download-button:hover {
    transform: translateY(-3px);
}

.file-size {
    font-size: 0.8em;
    opacity: 0.9;
}

.coming-soon {
    color: #999;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-dot {
    width: 10px;
    height: 10px;
    background: #ddd;
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}

/* 产品线样式 */
.product-line {
    margin: 4rem 0;
    background: rgba(255, 255, 255, 0.05);
    padding: 3rem;
    border-radius: 20px;
}

.product-title {
    text-align: center;
    color: var(--primary-color);
    font-size: 2.2rem;
    margin-bottom: 3rem;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.product-card {
    background:  rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0,0,0,0.06);
    transition: transform 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
}

.product-image {
/* height: 520px; */
    background-size: cover;
  
    background-position: center;
}

.product-info {
    padding: 1.5rem;
    background-color: rgba(255, 255, 255, 0.05);
}

.features {
    columns: 2;
    list-style: none;
    padding: 0;
    margin: 1rem 0;
}

.features li {
    padding: 0.5rem 0;
    font-size: 0.95rem;
}

.price {
    color: #e63946;
    font-size: 1.4rem;
    font-weight: bold;
    margin: 1rem 0;
}

.original-price {
    color: #999;
    text-decoration: line-through;
    font-size: 0.9em;
}

.buy-button {
    width: 100%;
    padding: 1rem;
    background: #2a4d8e;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s;
}

.buy-button:hover {
    background: #1a3353;
}

@keyframes pulse {
    0% { opacity: 0.6; }
    50% { opacity: 1; }
    100% { opacity: 0.6; }
}

@media (max-width: 768px) {
    .download-section {
        grid-template-columns: 1fr;
    }
    
    .features {
        columns: 1;
    }
}