@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&display=swap');

:root {
    --primary: #6366f1;
    --primary-glow: rgba(99, 102, 241, 0.5);
    --secondary: #a855f7;
    --accent: #22d3ee;
    --bg-dark: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-border: rgba(255, 255, 255, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: radial-gradient(circle at top right, rgba(99, 102, 241, 0.15), transparent),
        radial-gradient(circle at bottom left, rgba(168, 85, 247, 0.15), transparent);
}

.container {
    width: 100%;
    max-width: 480px;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

.background-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    width: 300px;
    height: 300px;
    background: var(--primary);
    filter: blur(80px);
    border-radius: 50%;
    opacity: 0.2;
    animation: move 20s infinite alternate;
}

.blob-1 {
    top: -100px;
    right: -100px;
    background: var(--primary);
}

.blob-2 {
    bottom: -100px;
    left: -100px;
    background: var(--secondary);
}

@keyframes move {
    from {
        transform: translate(0, 0) scale(1);
    }

    to {
        transform: translate(50px, 50px) scale(1.2);
    }
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 2rem;
    padding: 3rem 2rem;
    text-align: center;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.app-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 1.5rem;
    border-radius: 1.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3), 0 0 20px var(--primary-glow);
    display: block;
    object-fit: cover;
    animation: pulse 3s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3), 0 0 20px var(--primary-glow);
    }

    50% {
        transform: scale(1.05);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3), 0 0 40px var(--primary-glow);
    }

    100% {
        transform: scale(1);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3), 0 0 20px var(--primary-glow);
    }
}

h1 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.version-tag {
    display: inline-block;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.85rem;
    color: var(--accent);
    margin-bottom: 1.5rem;
    border: 1px solid rgba(34, 211, 238, 0.3);
}

.description {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 2.5rem;
}

.download-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    text-decoration: none;
    padding: 1.25rem;
    border-radius: 1.25rem;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 10px 20px rgba(99, 102, 241, 0.3);
    position: relative;
    overflow: hidden;
}

.download-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
}

.download-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(99, 102, 241, 0.4);
}

.download-btn:hover::after {
    left: 100%;
}

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

.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 2.5rem;
    border-top: 1px solid var(--glass-border);
    padding-top: 2rem;
}

.info-item {
    text-align: left;
}

.info-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.info-value {
    font-size: 0.95rem;
    font-weight: 600;
}

.install-guide {
    margin-top: 2rem;
    text-align: left;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 1rem;
    padding: 1.5rem;
}

.guide-title {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.guide-step {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    display: flex;
    gap: 0.75rem;
}

.step-num {
    color: var(--accent);
    font-weight: 800;
}

footer {
    margin-top: 2rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
}
/* 手机模式移除边距与圆角调整 */
@media (max-width: 480px) {
    body {
        align-items: flex-start;
    }
    .container {
        padding: 0;
    }
    .card {
        border-radius: 0;
        border: none;
        min-height: 100vh;
        padding: 3rem 1.5rem;
        background: var(--bg-dark);
    }
}