.about-hero {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 15px;
    margin-bottom: 60px;
    animation: slideDown 0.8s ease-out;
}

.about-hero h1 {
    font-size: 3rem;
    margin-bottom: 10px;
}

.about-hero .subtitle {
    font-size: 1.3rem;
    opacity: 0.9;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mission Section */
.mission-section {
    background: white;
    padding: 60px 20px;
    margin-bottom: 60px;
    border-radius: 12px;
}

.mission-content {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 40px;
    align-items: center;
    max-width: 1000px;
    margin: 0 auto;
}

.mission-text h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #1f2937;
}

.mission-text p {
    font-size: 1.1rem;
    color: #6b7280;
    line-height: 1.8;
    margin-bottom: 15px;
}

.mission-icon {
    font-size: 6rem;
    text-align: center;
    animation: float 3s ease-in-out infinite;
}

/* How It Works */
.how-it-works {
    background: #f9fafb;
    padding: 60px 20px;
    margin-bottom: 60px;
    border-radius: 12px;
}

.how-it-works h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: #1f2937;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.step-card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    animation: scaleIn 0.6s ease-out backwards;
}

.step-card:nth-child(1) {
    animation-delay: 0s;
}

.step-card:nth-child(2) {
    animation-delay: 0.1s;
}

.step-card:nth-child(3) {
    animation-delay: 0.2s;
}

.step-card:nth-child(4) {
    animation-delay: 0.3s;
}

.step-card:nth-child(5) {
    animation-delay: 0.4s;
}

.step-card:nth-child(6) {
    animation-delay: 0.5s;
}

.step-card:hover {
    transform: translateY(-15px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.2);
}

.step-number {
    display: inline-block;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    line-height: 60px;
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 15px;
}

.step-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: #1f2937;
}

.step-card p {
    color: #6b7280;
    line-height: 1.6;
}

/* User Guide */
.user-guide {
    background: white;
    padding: 60px 20px;
    margin-bottom: 60px;
    border-radius: 12px;
}

.user-guide h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 40px;
    color: #1f2937;
}

.guide-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 40px;
    flex-wrap: wrap;
    justify-content: center;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.tab-btn {
    padding: 12px 24px;
    border: 2px solid #e5e7eb;
    background: white;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.tab-btn:hover {
    border-color: #667eea;
    color: #667eea;
}

.tab-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: transparent;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-out;
    max-width: 900px;
    margin: 0 auto;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.tab-content h3 {
    font-size: 1.8rem;
    color: #1f2937;
    margin-bottom: 30px;
}

.guide-item {
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #e5e7eb;
}

.guide-item:last-child {
    border-bottom: none;
}

.guide-item h4 {
    font-size: 1.2rem;
    color: #1f2937;
    margin-bottom: 10px;
}

.guide-item p {
    color: #6b7280;
    line-height: 1.7;
}

.faq-item {
    margin-bottom: 20px;
}

/* Values Section */
.values-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 60px 20px;
    border-radius: 12px;
    margin-bottom: 60px;
}

.values-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.value-card {
    text-align: center;
    padding: 30px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    transition: var(--transition);
    animation: slideUp 0.6s ease-out backwards;
}

.value-card:nth-child(1) {
    animation-delay: 0s;
}

.value-card:nth-child(2) {
    animation-delay: 0.1s;
}

.value-card:nth-child(3) {
    animation-delay: 0.2s;
}

.value-card:nth-child(4) {
    animation-delay: 0.3s;
}

.value-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.2);
}

.value-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.value-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.value-card p {
    opacity: 0.9;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .about-hero h1 {
        font-size: 2rem;
    }

    .mission-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .how-it-works h2,
    .user-guide h2,
    .values-section h2 {
        font-size: 2rem;
    }

    .steps-grid {
        grid-template-columns: 1fr;
    }

    .guide-tabs {
        flex-direction: column;
        gap: 10px;
    }

    .tab-btn {
        width: 100%;
    }
}