/* 官网页面样式（index.html） */

:root {
    --bg-1: #1a1a2e;
    --bg-2: #16213e;
    --bg-3: #0f3460;
    --text-muted: #a0aec0;
    --text-dim: #4a5568;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --accent-1: #667eea;
    --accent-2: #764ba2;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, var(--bg-1) 0%, var(--bg-2) 50%, var(--bg-3) 100%);
    min-height: 100vh;
    color: #fff;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 60px 24px;
    text-align: center;
}

.logo {
    width: 120px;
    height: 120px;
    margin: 0 auto 32px;
    background: linear-gradient(135deg, var(--accent-1) 0%, var(--accent-2) 100%);
    border-radius: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    box-shadow: 0 20px 60px rgba(102, 126, 234, 0.4);
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(90deg, #fff 0%, #a8b4ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.subtagline {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 620px;
    margin: 0 auto 42px;
    line-height: 1.8;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    margin-bottom: 44px;
}

.feature {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 24px;
    backdrop-filter: blur(10px);
    text-align: left;
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.feature h3 {
    font-size: 1.05rem;
    margin-bottom: 8px;
}

.feature p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.7;
}

.actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 8px;
}

.app-store-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: #000;
    color: #fff;
    padding: 14px 28px;
    border-radius: 12px;
    text-decoration: none;
    font-size: 1rem;
    border: 1px solid #333;
    transition: transform 0.2s, box-shadow 0.2s;
}

.app-store-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

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

.secondary-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 18px;
    border-radius: 12px;
    text-decoration: none;
    border: 1px solid var(--card-border);
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.03);
    transition: transform 0.2s, background 0.2s;
}

.secondary-link:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.06);
}

.small-note {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.55);
    line-height: 1.6;
}

footer {
    margin-top: 64px;
    padding-top: 32px;
    border-top: 1px solid var(--card-border);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: #fff;
}

.copyright {
    color: var(--text-dim);
    font-size: 0.85rem;
}

@media (max-width: 420px) {
    .container {
        padding: 44px 18px;
    }

    .logo {
        width: 96px;
        height: 96px;
        border-radius: 22px;
        font-size: 40px;
    }

    h1 {
        font-size: 2.1rem;
    }
}