.main {
    padding-top: calc(44px + env(safe-area-inset-top));
}

.technique-list {
    padding-bottom: var(--spacing-section);
}

.technique-item {
    display: flex;
    background-color: #FFFFFF;
    border-radius: var(--radius-card);
    overflow: hidden;
    margin-bottom: var(--spacing-card);
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    cursor: pointer;
}

.technique-image {
    width: 100px;
    height: 100px;
    flex-shrink: 0;
    background-color: var(--color-border);
    background-size: cover;
    background-position: center;
}

.technique-info {
    flex: 1;
    padding: var(--spacing-card);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.technique-name {
    font-size: var(--font-size-h3);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.technique-desc {
    font-size: var(--font-size-body);
    color: var(--color-text-secondary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.technique-detail-header {
    padding: var(--spacing-section) 0;
}

.technique-detail-image {
    width: 100%;
    height: 300px;
    background-color: var(--color-border);
    background-size: cover;
    background-position: center;
    border-radius: var(--radius-card);
    margin-bottom: var(--spacing-card);
}

.technique-detail-name {
    font-size: var(--font-size-h1);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.technique-detail-section {
    margin-bottom: var(--spacing-section);
}

.technique-detail-title {
    font-size: var(--font-size-h3);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
}

.technique-detail-title::before {
    content: '';
    width: 4px;
    height: 16px;
    background-color: var(--color-brand);
    border-radius: 2px;
    margin-right: var(--spacing-xs);
}

.technique-detail-desc {
    font-size: var(--font-size-body);
    color: var(--color-text-secondary);
    line-height: 1.6;
    background-color: #FFFFFF;
    padding: var(--spacing-card);
    border-radius: var(--radius-card);
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.technique-colors {
    margin-top: var(--spacing-sm);
}

.colors-label {
    font-size: var(--font-size-body);
    font-weight: var(--font-medium);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.colors-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.color-item {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition-normal);
}

.color-item.white { background-color: #FFFFFF; border: 2px solid var(--color-border); }
.color-item.grey { background-color: #999999; }
.color-item.black { background-color: #1A1A1A; }
.color-item.yellow { background-color: #D4B86A; }
.color-item.green { background-color: #5B9A6F; }
.color-item.red { background-color: #C75B5B; }
.color-item.blue { background-color: #5B7BC7; }
.color-item.brown { background-color: #8B6914; }

@media (min-width: 768px) {
    .main {
        padding-top: 64px;
    }

    .technique-list {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-card);
    }

    .technique-item {
        flex-direction: row;
        padding: var(--spacing-card);
        box-shadow: 0 4px 16px rgba(0,0,0,0.08);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .technique-item:hover {
        transform: translateY(-4px);
        box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    }

    .technique-image {
        width: 160px;
        height: 160px;
        border-radius: var(--radius-card);
    }

    .technique-info {
        padding: var(--spacing-card);
    }

    .technique-detail-image {
        height: 500px;
        box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    }

    .technique-detail-desc {
        font-size: var(--font-size-body);
        line-height: 1.8;
    }
}

@media (min-width: 1024px) {
    .technique-list {
        grid-template-columns: repeat(3, 1fr);
    }

    .technique-image {
        width: 140px;
        height: 140px;
    }
}

@media (min-width: 1440px) {
    .technique-list {
        grid-template-columns: repeat(4, 1fr);
    }

    .technique-image {
        width: 160px;
        height: 160px;
    }

    .technique-detail-image {
        height: 600px;
    }
}