.hero-alex {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
    overflow: hidden;
}

.hero-alex::before {
    content: "";
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.2) 0%, transparent 70%);
    top: -150px;
    right: -100px;
}

.hero-alex h1 {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 800;
    position: relative;
    z-index: 1;
}

.hero-alex p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    position: relative;
    z-index: 1;
}

.section {
    padding: 5rem 4%;
    position: relative;
}

.section.dark {
    background: linear-gradient(180deg, rgba(255,255,255,0.02) 0%, transparent 100%);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.section h2 {
    font-size: 2.4rem;
    margin-bottom: 2rem;
}

.lead {
    max-width: 750px;
    margin: 2rem auto;
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.highlight-box {
    margin: 2rem auto;
    max-width: 650px;
    padding: 2.5rem;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(16, 185, 129, 0.1));
    border-radius: 14px;
    border: 1px solid var(--border);
    border-left: 4px solid var(--accent-primary);
    text-align: left;
    transition: all 0.3s ease;
}

.highlight-box:hover {
    border-left-color: var(--accent-secondary);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(16, 185, 129, 0.15));
}

.highlight-box i {
    font-size: 2rem;
    color: var(--accent-primary);
    margin-right: 1rem;
    margin-bottom: 1rem;
}

.highlight-box p {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.7;
}

.simulator {
    place-items: center;
    text-align: center;
    margin: 3rem 0;
}

#simulateBtn {
    padding: 16px 40px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.3);
}

#simulateBtn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(59, 130, 246, 0.4);
}

#simulateBtn:active {
    transform: translateY(-1px);
}

.flow {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 3rem;
    flex-wrap: wrap;
}

.node {
    padding: 1.2rem 2rem;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    border-radius: 12px;
    opacity: 0.3;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-weight: 600;
    min-width: 140px;
}

.node.active {
    opacity: 1;
    transform: scale(1.15);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.4);
}

.process {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.2rem;
    flex-wrap: wrap;
    margin-top: 3rem;
}

.step {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    padding: 1.5rem;
    border-radius: 14px;
    width: 100%;
    max-width: 190px;
    min-height: 260px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--border);
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
}

.step:hover {
    transform: translateY(-6px);
    border-color: var(--accent-primary);
    box-shadow: 0 12px 30px rgba(59, 130, 246, 0.2);
}

.step h3 {
    margin: 0.3rem 0 0.2rem 0;
    font-size: 0.9rem;
    line-height: 1.2;
}

.step p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.75rem;
    line-height: 1.2;
}

.circle {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    color: white;
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.3);
    margin-bottom: 0.4rem;
}

.arrow {
    font-size: 2.5rem;
    opacity: 0.3;
    color: var(--text-muted);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.card {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    padding: 2rem;
    border-radius: 14px;
    transition: all 0.3s ease;
    border: 1px solid var(--border);
    position: relative;
}

.card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.card:hover::before {
    transform: scaleX(1);
}

.card:hover {
    transform: translateY(-6px);
    border-color: var(--accent-primary);
    box-shadow: 0 12px 30px rgba(59, 130, 246, 0.2);
}

.card i {
    font-size: 2.2rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
    display: block;
}

.card h3 {
    margin-top: 0;
}

.card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.text-block {
    max-width: 800px;
    margin: 3rem auto;
    text-align: left;
    line-height: 1.8;
}

.text-block p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

@media (max-width: 768px) {
    .section {
        padding: 3rem 2rem;
    }

    .process {
        gap: 0.8rem;
    }

    .step {
        width: 100%;
        max-width: 280px;
    }

    .arrow {
        display: none;
    }

    .text-block {
        margin: 2rem auto;
    }
}