.problem-section {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-bg-secondary);
    position: relative;
}

.problem-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 5vw 0 8vw;
}

@media (min-width: 1200px) {
    .problem-container {
        padding-left: 12vw;
        padding-right: 10vw;
    }
}

/* Core Problem Section - Tilted Left */
.problem-core {
    text-align: left;
    margin-bottom: var(--spacing-4xl);
    max-width: 800px;
    padding-left: 2rem;
}

.problem-core-title {
    font-family: var(--font-primary);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.1;
    letter-spacing: -0.03em;
    position: relative;
    padding-bottom: var(--spacing-lg);
}

.problem-core-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background-color: var(--color-accent);
    border-radius: 2px;
}

.problem-core-text {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    max-width: 600px;
}

/* Antithesis Section - Premium Minimal */
.problem-antithesis {
    display: flex;
    align-items: stretch;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-4xl);
    padding-left: 2rem;
}

.antithesis-item {
    flex: 1;
    padding: var(--spacing-3xl);
    background: #ffffff;
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-light);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.antithesis-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.antithesis-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border-light);
}

.antithesis-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 900;
    border-radius: 12px;
}

.antithesis-left .antithesis-icon {
    background: var(--color-success-light);
    color: var(--color-success);
}

.antithesis-right .antithesis-icon {
    background: #fee2e2;
    color: #ef4444;
}

.antithesis-title {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.antithesis-desc {
    font-family: var(--font-primary);
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

.antithesis-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.antithesis-list li {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    padding: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-xl);
    position: relative;
    line-height: 1.5;
}

.antithesis-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    font-weight: bold;
}

.antithesis-left .antithesis-list li::before {
    color: var(--color-success);
}

.antithesis-right .antithesis-list li::before {
    color: #ef4444;
}

/* Divider with VS */
.antithesis-divider {
    display: flex;
    align-items: center;
    justify-content: center;
}

.vs-text {
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 800;
    color: var(--color-text-muted);
    background: var(--color-bg-tertiary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
}

/* Problem Items - Horizontal Flow or Clean List */
.problem-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    justify-content: flex-start;
    margin-top: var(--spacing-3xl);
    padding-left: 2rem;
}

.problem-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    background: transparent;
    padding: 0;
    border: none;
    border-radius: 0;
}

.problem-icon {
    font-weight: 900;
    font-size: 0.875rem;
}

.problem-icon.icon-check {
    color: var(--color-success);
}

.problem-icon.icon-x {
    color: #ef4444;
}

.problem-text {
    font-size: 1rem;
    color: var(--color-text-primary);
    margin: 0;
    font-weight: 500;
}

/* Responsive */
@media (max-width: 768px) {
    .problem-section {
        padding: var(--spacing-3xl) 0;
    }

    .problem-container {
        padding: 0 var(--spacing-xl);
    }

    .problem-core-title {
        font-size: 1.85rem;
    }

    .problem-core-text {
        font-size: 1.1rem;
    }

    .problem-antithesis {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .antithesis-divider {
        padding: var(--spacing-sm) 0;
    }

    .problem-list {
        flex-direction: column;
        align-items: flex-start;
    }
}