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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #000000 0%, #535353 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* 图片轮播区域 */
.carousel-section {
    margin-bottom: 60px;
}

.carousel-container {
    position: relative;
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.carousel-slides {
    position: relative;
    width: 100%;
    height: 500px;
    overflow: hidden;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
}

.slide.active {
    opacity: 1;
}

.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.carousel-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: #fff;
    width: 30px;
    border-radius: 6px;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: #fff;
    font-size: 40px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
    backdrop-filter: blur(10px);
}

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

.carousel-btn.prev {
    left: 20px;
}

.carousel-btn.next {
    right: 20px;
}

/* 中间进入入口区域 */
.entry-section {
    margin-bottom: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 300px;
}

.entry-content {
    text-align: center;
    padding: 60px 40px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 30px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    max-width: 600px;
    width: 100%;
}

.entry-title {
    font-size: 48px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
    letter-spacing: 2px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.entry-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
    font-weight: 300;
    letter-spacing: 1px;
}

.entry-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 50px;
    font-size: 18px;
    font-weight: 600;
    color: #667eea;
    background: #fff;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    letter-spacing: 1px;
}

.entry-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.entry-btn:active {
    transform: translateY(-1px);
}

.entry-btn svg {
    transition: transform 0.3s ease;
}

.entry-btn:hover svg {
    transform: translateX(5px);
}

/* 下载APP区域 */
.download-section {
    display: flex;
    justify-content: center;
    align-items: center;
}

.download-content {
    text-align: center;
    padding: 50px 40px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 30px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    max-width: 700px;
    width: 100%;
}

.download-title {
    font-size: 36px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 15px;
    letter-spacing: 1px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.download-subtitle {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
    font-weight: 300;
    letter-spacing: 0.5px;
}

.download-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 35px;
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    letter-spacing: 0.5px;
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.download-btn:active {
    transform: translateY(-1px);
}

.download-btn svg {
    width: 24px;
    height: 24px;
}

/* iOS 安装说明文字样式 */
.ios-tip {
    margin-top: 8px;
    font-size: 70%; /* 比正文小约 30% */
    color: rgba(255, 255, 255, 0.9);
    text-align: left;
    line-height: 1.5;
}

.ios-tip p:first-child {
    font-weight: 600;
}

/* 响应式设计 */
@media (max-width: 768px) {
    /* 整体左右留白变小，垂直更紧凑 */
    .container {
        padding: 16px 12px;
    }

    .carousel-section {
        margin-bottom: 28px;
    }

    .carousel-slides {
        height: 260px;
    }

    .entry-section {
        margin-bottom: 28px;
        min-height: auto;
    }

    .entry-content {
        padding: 24px 18px;
        border-radius: 22px;
    }

    .entry-title {
        font-size: 26px;
        margin-bottom: 10px;
        letter-spacing: 1px;
    }

    .entry-subtitle {
        font-size: 14px;
        margin-bottom: 20px;
    }

    .entry-btn {
        padding: 12px 30px;
        font-size: 15px;
    }

    .download-content {
        padding: 24px 18px;
        border-radius: 22px;
    }

    .download-title {
        font-size: 22px;
        margin-bottom: 8px;
    }

    .download-subtitle {
        font-size: 13px;
        margin-bottom: 20px;
    }

    .download-buttons {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    .download-btn {
        width: 100%;
        max-width: 100%;
        justify-content: center;
        padding: 12px 20px;
        font-size: 15px;
    }

    .carousel-btn {
        width: 34px;
        height: 34px;
        font-size: 24px;
    }

    .carousel-btn.prev {
        left: 6px;
    }

    .carousel-btn.next {
        right: 6px;
    }
}

@media (max-width: 480px) {
    .carousel-slides {
        height: 220px;
    }
}