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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: #F6F7F9;
    color: #1D2A39;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.app-wrapper {
    max-width: 780px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-color: #F6F7F9;
}

.app-header {
    background-color: #FFFFFF;
    padding: 16px 20px;
    border-bottom: 1px solid #E8EAED;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-brand {
    font-size: 20px;
    font-weight: 700;
    color: #28A745;
    letter-spacing: -0.5px;
}

.app-main {
    flex: 1;
    padding: 20px;
}

.content-card {
    background-color: #FFFFFF;
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.nav-menu {
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid #E8EAED;
}

.menu-toggle {
    font-size: 16px;
    font-weight: 600;
    color: #28A745;
    cursor: pointer;
    list-style: none;
    padding: 12px 16px;
    background-color: #F0F9F4;
    border-radius: 10px;
    display: inline-block;
    transition: background-color 0.2s ease;
}

.menu-toggle:hover {
    background-color: #E3F5E8;
}

.menu-toggle::marker,
.menu-toggle::-webkit-details-marker {
    display: none;
}

.menu-list {
    list-style: none;
    margin-top: 16px;
    padding-left: 0;
}

.menu-list li {
    padding: 10px 16px;
    margin: 4px 0;
    border-radius: 8px;
    transition: background-color 0.2s ease;
}

.menu-list li:hover {
    background-color: #F6F7F9;
}

.menu-list a {
    color: #1D2A39;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    display: block;
}

.main-content {
    font-size: 15px;
    line-height: 1.7;
}

.main-content p {
    margin-bottom: 16px;
}

.stats-section {
    margin-bottom: 20px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.stat-item {
    background-color: #FFFFFF;
    border-radius: 16px;
    padding: 20px 16px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.stat-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    margin: 0 auto 12px;
    background-color: #F0F9F4;
    border-radius: 14px;
    color: #28A745;
}

.stat-label {
    font-size: 13px;
    font-weight: 600;
    color: #6B7280;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 15px;
    font-weight: 700;
    color: #1D2A39;
}

.gallery-section {
    margin-bottom: 20px;
}

.section-heading {
    font-size: 20px;
    font-weight: 700;
    color: #1D2A39;
    margin-bottom: 16px;
    padding-left: 4px;
}

.gallery-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.gallery-scroll::-webkit-scrollbar {
    display: none;
}

.gallery-track {
    display: flex;
    gap: 12px;
    padding-bottom: 8px;
}

.gallery-item {
    flex: 0 0 auto;
    width: 280px;
    height: 280px;
    border-radius: 16px;
    overflow: hidden;
    background-color: #FFFFFF;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.guide-section {
    background-color: #FFFFFF;
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.step-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.step-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.step-number {
    flex: 0 0 auto;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #28A745 0%, #20963C 100%);
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    box-shadow: 0 2px 6px rgba(40, 167, 69, 0.3);
}

.step-content {
    flex: 1;
    padding-top: 2px;
}

.step-title {
    font-size: 17px;
    font-weight: 700;
    color: #1D2A39;
    margin-bottom: 6px;
}

.step-description {
    font-size: 14px;
    line-height: 1.6;
    color: #6B7280;
}

.app-footer {
    background-color: #FFFFFF;
    padding: 20px;
    border-top: 1px solid #E8EAED;
    margin-top: auto;
}

.footer-content {
    text-align: center;
}

.footer-text {
    font-size: 14px;
    color: #6B7280;
    margin-bottom: 8px;
}

.footer-text a {
    color: #28A745;
    text-decoration: none;
    font-weight: 600;
}

.footer-text a:hover {
    text-decoration: underline;
}

.footer-copyright {
    font-size: 13px;
    color: #9CA3AF;
}

@media (max-width: 480px) {
    .app-main {
        padding: 16px;
    }

    .content-card {
        padding: 20px;
    }

    .stats-grid {
        gap: 10px;
    }

    .stat-item {
        padding: 16px 12px;
    }

    .stat-icon {
        width: 48px;
        height: 48px;
    }

    .gallery-item {
        width: 240px;
        height: 240px;
    }

    .section-heading {
        font-size: 18px;
    }

    .guide-section {
        padding: 20px;
    }

    .step-number {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }

    .step-title {
        font-size: 16px;
    }
}