:root {
    --primary-color: #007AFF;
    --secondary-color: #34C759;
    --bg-color: #f5f5f7;
    --text-color: #1d1d1f;
    --card-bg: #ffffff;
    --navbar-bg: rgba(255, 255, 255, 0.8);
}

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

body {
    font-family: 'Outfit', 'Noto Sans SC', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

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

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    height: 60px;
    background: var(--navbar-bg);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    font-weight: 700;
}

.logo img {
    height: 32px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 20px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--primary-color);
}

/* Hero */
.hero {
    padding: 120px 0 80px;
    text-align: center;
    background: linear-gradient(135deg, #fff 0%, #eef2f3 100%);
}

.hero-logo {
    width: 120px;
    height: 120px;
    margin-bottom: 20px;
    border-radius: 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    color: #000;
}

.tagline {
    font-size: 1.2rem;
    color: #6e6e73;
    max-width: 600px;
    margin: 0 auto 40px;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 30px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--primary-color);
    color: #fff;
    box-shadow: 0 4px 15px rgba(0, 122, 255, 0.3);
}

.btn-secondary {
    background-color: #000;
    color: #fff;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* Gallery */
.gallery {
    padding: 80px 0;
    background-color: #fff;
}

.gallery h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2rem;
}

.screenshots {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.screenshot-placeholder {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px;
    color: #888;
}

.gallery-item {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    background: #f9f9f9;
}

.gallery-item img {
    width: 100%;
    height: auto;
    display: block;
}

/* Footer */
.footer {
    padding: 40px 0;
    text-align: center;
    background-color: var(--bg-color);
    color: #6e6e73;
    font-size: 0.9rem;
}

.icp {
    margin-left: 10px;
    opacity: 0.8;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.2rem;
    }

    .download-buttons {
        flex-direction: column;
        align-items: stretch;
        max-width: 300px;
        margin: 0 auto;
    }
}