.container {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 0 20px;
}

.page-header {
    text-align: center;
    margin-bottom: 3rem;
    background: #fff;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

.page-title {
    font-size: 2.5rem;
    color: #1a1a1a;
    margin-bottom: 0.5rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.page-subtitle {
    color: #4b5563;
    font-size: 1.1rem;
    line-height: 1.6;
}

.stats-banner {
    background: #fff;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
    text-align: center;
    padding: 1.5rem;
    margin-bottom: 3rem;
    display: flex;
    justify-content: center;
    gap: 3rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #1a1a1a;
}

.stat-number.history {
    color: #1E3A8A;
}

.stat-number.achievement {
    color: #0D9488;
}

.stat-label {
    color: #4b5563;
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    justify-content: center;
}

.stat-label svg {
    stroke: currentColor;
    flex-shrink: 0;
}

.stat-label.history {
    color: #1E3A8A;
}

.stat-label.achievement {
    color: #0D9488;
}

.back-btn {
    display: inline-block;
    padding: 0.625rem 1rem;
    background-color: #fff;
    border: 1px solid #d1d5db;
    color: #374151;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.2s;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    margin-bottom: 2rem;
}

.back-btn:hover {
    background-color: #f9fafb;
    border-color: #9ca3af;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.timeline-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline-line {
    display: none;
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
    width: 100%;
    opacity: 0;
    transform: translateY(20px);
    animation: 0.6s forwards fadeInUp;
}

.timeline-content {
    background: #fff;
    padding: 2rem;
    padding-top: 2.5rem;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
    width: 100%;
    position: relative;
    transition: transform 0.2s, box-shadow 0.2s;
}

.timeline-content:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.timeline-content::before {
    display: none;
}

.timeline-icon {
    position: absolute;
    top: -12px;
    left: 1.5rem;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    border: 4px solid #fff;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.12);
    z-index: 10;
    background: #f9fafb;
    color: #374151;
}

.timeline-icon svg {
    width: 28px;
    height: 28px;
    stroke: currentColor;
}

.timeline-icon.history {
    background: #EFF6FF;
    color: #1E3A8A;
}

.timeline-icon.achievement {
    background: #F0FDFA;
    color: #0D9488;
}

.timeline-type {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 1rem;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    color: #374151;
}

.timeline-type.history {
    background: #EFF6FF;
    border-color: #BFDBFE;
    color: #1E3A8A;
}

.timeline-type.achievement {
    background: #F0FDFA;
    border-color: #99F6E4;
    color: #0D9488;
}

.timeline-title {
    font-size: 1.4rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.timeline-image {
    width: 100%;
    margin: 1rem 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    background: #f9fafb;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    max-height: 400px;
}

.timeline-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    max-height: 400px;
    transition: transform 0.3s ease;
}

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

.timeline-description {
    color: #374151;
    line-height: 1.6;
    font-size: 0.9375rem;
}

.timeline-date {
    color: #4b5563;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.loading {
    text-align: center;
    padding: 2rem;
    color: #4b5563;
}

.no-items {
    background: #fff;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
    text-align: center;
    color: #4b5563;
    font-style: italic;
    padding: 4rem;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .page-title {
        font-size: 2rem;
    }

    .page-subtitle {
        font-size: 1rem;
    }

    .stats-banner {
        flex-direction: column;
        gap: 1.5rem;
        padding: 1.5rem;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .timeline-container {
        max-width: 100%;
        padding: 0 10px;
    }

    .timeline-item {
        margin-bottom: 1.5rem;
    }

    .timeline-content {
        padding: 1.5rem;
        padding-top: 2.5rem;
    }

    .timeline-icon {
        top: -10px;
        left: 20px;
        width: 50px;
        height: 50px;
        font-size: 1.4rem;
    }

    .timeline-icon svg {
        width: 24px;
        height: 24px;
        stroke: currentColor;
    }

    .timeline-title {
        font-size: 1.2rem;
    }

    .timeline-date {
        font-size: 0.85rem;
    }

    .timeline-image {
        min-height: 180px;
        max-height: 350px;
    }

    .timeline-image img {
        max-height: 350px;
    }

    .timeline-description {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .page-header {
        padding: 1.5rem;
        margin-bottom: 2rem;
    }

    .page-title {
        font-size: 1.8rem;
    }

    .stats-banner {
        margin-bottom: 2rem;
        padding: 1.25rem;
    }

    .timeline-container {
        padding: 0;
    }

    .timeline-item {
        margin-bottom: 1rem;
    }

    .timeline-content {
        padding: 1.25rem;
        padding-top: 2.25rem;
        border-radius: 10px;
    }

    .timeline-icon {
        top: -8px;
        left: 15px;
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
    }

    .timeline-icon svg {
        width: 20px;
        height: 20px;
        stroke: currentColor;
    }

    .timeline-type {
        font-size: 0.7rem;
        padding: 0.25rem 0.5rem;
    }

    .timeline-title {
        font-size: 1.1rem;
    }

    .timeline-date {
        font-size: 0.8rem;
    }

    .timeline-image {
        margin: 0.75rem 0;
        border-radius: 6px;
        min-height: 150px;
        max-height: 300px;
    }

    .timeline-image img {
        max-height: 300px;
    }

    .timeline-description {
        font-size: 0.875rem;
        line-height: 1.5;
    }

    .back-btn {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
        width: 100%;
        text-align: center;
    }
}