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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f8f5f0;
    color: #333;
    line-height: 1.6;
    max-width: 414px;
    margin: 0 auto;
}

.container {
    max-width: 414px;
    margin: 0 auto;
    padding: 10px;
}

.screen {
    background: #fff;
    border-radius: 8px;
    margin-bottom: 10px;
    padding: 12px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.08);
}

.top-nav {
    background: #1a1a2e;
    color: #fff;
    display: flex;
    align-items: center;
    padding: 10px 12px;
    position: sticky;
    top: 0;
    z-index: 100;
    max-width: 414px;
    margin: 0 auto;
}

.logo {
    font-size: 16px;
    font-weight: bold;
    margin-right: 12px;
    white-space: nowrap;
    color: #d4af37;
}

.top-nav nav {
    display: flex;
    overflow-x: auto;
    white-space: nowrap;
    flex: 1;
}

.top-nav nav::-webkit-scrollbar {
    display: none;
}

.top-nav nav a {
    color: #fff;
    text-decoration: none;
    margin-left: 12px;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 13px;
}

.top-nav nav a.active,
.top-nav nav a:hover {
    background: #d4af37;
    color: #1a1a2e;
}

.page-title {
    font-size: 18px;
    font-weight: bold;
    color: #1a1a2e;
    margin-bottom: 6px;
}

.page-desc {
    font-size: 13px;
    color: #666;
}

.section-title {
    font-size: 15px;
    font-weight: bold;
    color: #1a1a2e;
    margin-bottom: 8px;
}

.section-text {
    font-size: 13px;
    color: #666;
    line-height: 1.5;
}

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.feature-list li {
    padding: 10px;
    background: #f8f5f0;
    border-radius: 6px;
    font-size: 13px;
    line-height: 1.5;
}

.feature-list li strong {
    color: #1a1a2e;
}

.link-button {
    display: inline-block;
    padding: 10px 20px;
    background: linear-gradient(135deg, #c00 0%, #e74c3c 100%);
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: bold;
    transition: all 0.3s;
}

.link-button:hover {
    background: linear-gradient(135deg, #a00 0%, #c0392b 100%);
}

#float-btn {
    position: fixed;
    right: 15px;
    bottom: 80px;
    background: linear-gradient(135deg, #8B4513, #D2691E);
    color: #fff;
    padding: 12px 15px;
    border-radius: 25px;
    font-size: 14px;
    box-shadow: 0 4px 12px rgba(139, 69, 19, 0.3);
    cursor: pointer;
    z-index: 99;
}