/* /css/pages/about.css */
.page-main-content section {
    width: 100%;
    overflow: hidden;
}

.section-title {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem auto;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.section-title p {
    font-size: 1.1rem;
    color: var(--subText-color);
}

.section-tag {
    display: inline-block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--theme-color);
    margin-bottom: 1rem;
    letter-spacing: 0.5px;
}

.about-hero {
    height: 100vh;
    min-height: 700px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 2rem;
    position: relative;
    background: radial-gradient(circle at 50% 50%, var(--bg-secondary) 0%, var(--white-color) 80%);
}

.hero-content {
    max-width: 900px;
    animation: fadeInHero 1s ease-out 0.2s forwards;
    opacity: 0;
}

@keyframes fadeInHero {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-tag {
    display: inline-block;
    font-size: 1rem;
    font-weight: 500;
    color: var(--subText-color);
    margin-bottom: 1rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--dark-color);
    line-height: 1.3;
    margin-bottom: 1.5rem;
}

.hero-title .highlight {
    color: var(--theme-color);
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--subText-color);
    line-height: 1.7;
    max-width: 700px;
    margin: 0 auto;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--subText-color);
    font-size: 0.75rem;
    letter-spacing: 1px;
    opacity: 0;
    animation: fadeInHero 1s ease-out 1s forwards;
}

.scroll-indicator span {
    margin-bottom: 0.5rem;
}

.scroll-indicator .line {
    width: 1px;
    height: 40px;
    background-color: var(--subText-color);
    position: relative;
    overflow: hidden;
}

.scroll-indicator .line::after {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent, var(--dark-color), transparent);
    animation: scrollDown 2s ease-out infinite;
}

@keyframes scrollDown {
    0% { transform: translateY(0); }
    100% { transform: translateY(200%); }
}

.narrative-section {
    padding: 6rem 0;
    background-color: var(--white-color);
}

.narrative-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    flex-direction: column;
    gap: 8rem;
}

.narrative-item {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
    align-items: center;
}

.narrative-item.has-image {
    grid-template-columns: 1fr 1fr;
}

.narrative-item.has-image:nth-child(even) .narrative-image-wrapper {
    order: 2;
}

.narrative-item.mission .narrative-text-wrapper,
.narrative-item.values .narrative-text-wrapper {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.narrative-image-wrapper {
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.narrative-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.narrative-image-wrapper:hover img {
    transform: scale(1.05);
}

.narrative-text-wrapper h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--dark-color);
    line-height: 1.3;
}

.narrative-text-wrapper p {
    color: var(--subText-color);
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
    line-height: 1.7;
}

.ceo-signature {
    margin-top: 2rem;
    text-align: left;
}

.ceo-signature p {
    margin-bottom: 0.5rem;
    color: var(--subText-color);
}

.ceo-signature h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dark-color);
}

.value-list {
    list-style: none;
    padding: 0;
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.narrative-item.values .value-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    text-align: left;
}

.value-list li strong {
    display: block;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.value-list li p {
    font-size: 1rem;
    margin-bottom: 0;
}

.timeline-section {
    padding: 6rem 2rem;
    background-color: var(--bg-secondary);
}

.timeline-container {
    max-width: 900px;
    margin: 0 auto;
}

.timeline {
    position: relative;
    margin-top: 3rem;
}

.timeline::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: #374151;
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    width: 50%;
    padding: 1rem 0;
    margin-bottom: 2rem;
}

.timeline-item:nth-child(even) {
    left: 50%;
    padding-left: 3rem;
}

.timeline-item:nth-child(odd) {
    padding-right: 3rem;
    text-align: right;
}

.timeline-dot {
    position: absolute;
    top: 1.5rem;
    width: 16px;
    height: 16px;
    background-color: var(--theme-color);
    border-radius: 50%;
    border: 3px solid var(--bg-secondary);
    z-index: 10;
}

.timeline-item:nth-child(even) .timeline-dot {
    left: -8px;
}

.timeline-item:nth-child(odd) .timeline-dot {
    right: -8px;
}

.timeline-content {
    background-color: var(--white-color);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid #374151;
    position: relative;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 1.3rem;
    width: 14px;
    height: 14px;
    background-color: var(--white-color);
    border: 1px solid #374151;
    transform: rotate(45deg);
    z-index: -1;
}

.timeline-item:nth-child(even) .timeline-content::before {
    left: -8px;
    border-top: none;
    border-right: none;
}

.timeline-item:nth-child(odd) .timeline-content::before {
    right: -8px;
    border-bottom: none;
    border-left: none;
}

.problem-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    color: #f87171;
    margin-bottom: 0.75rem;
}

.timeline-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.75rem;
}

.timeline-content p {
    font-size: 1rem;
    color: var(--subText-color);
    line-height: 1.6;
}

.solution-arrow {
    width: 30px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    margin: 1.5rem 0 1rem 0;
    color: #34d399;
    font-size: 1.5rem;
}

.timeline-item:nth-child(odd) .solution-arrow {
    margin-right: -5px;
}

.solution-arrow::before {
    content: '↓';
}

.solution-box {
    background-color: #1a3a4b;
    border: 1px solid #34d399;
    padding: 1rem;
    border-radius: 8px;
    text-align: left;
}

.solution-box strong {
    display: block;
    color: #34d399;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.cta-section {
    padding: 6rem 2rem;
    text-align: center;
    background-color: var(--white-color);
}

.cta-content h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.1rem;
    color: var(--subText-color);
    margin-bottom: 2rem;
}

@media (max-width: 900px) {
    .narrative-item.has-image {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .narrative-item.has-image:nth-child(even) .narrative-image-wrapper {
        order: 0;
    }
    .narrative-text-wrapper {
        text-align: center;
    }
    .ceo-signature {
        text-align: center;
    }
    .value-list li {
        text-align: left;
    }
}

@media (max-width: 768px) {
    .section-title h2,
    .narrative-text-wrapper h2 {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }
    .hero-subtitle {
        font-size: 1rem;
    }

    .narrative-item.values .value-list {
        grid-template-columns: 1fr;
    }

    .timeline::after {
        left: 10px;
    }
    .timeline-item {
        width: 100%;
        padding-left: 3rem;
        padding-right: 0;
        text-align: left !important;
    }
    .timeline-item:nth-child(even) {
        left: 0;
        padding-left: 3rem;
    }
    .timeline-item:nth-child(odd) {
        padding-right: 0;
    }

    .timeline-dot {
        left: 2px;
    }
    .timeline-item:nth-child(even) .timeline-dot,
    .timeline-item:nth-child(odd) .timeline-dot {
        left: 2px;
    }

    .timeline-content::before {
        left: -8px;
        right: auto !important;
        border-top: none;
        border-right: none;
        border-bottom: 1px solid #374151;
        border-left: 1px solid #374151;
    }
    .timeline-item:nth-child(odd) .solution-arrow {
        margin-right: 0;
    }
}