* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f5f7fa;
    min-height: 100vh;
    padding: 20px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

header {
    border-bottom: 3px solid #4a90e2;
    margin-bottom: 30px;
    padding-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    color: #1e3a8a;
    font-size: 32px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 12px;
}

.back-link {
    color: #2563eb;
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.back-link:hover {
    color: #1e40af;
    text-decoration: underline;
}

.banner-container {
    width: 100%;
    margin-bottom: 30px;
    overflow: hidden;
    border-radius: 12px;
    max-height: 200px;
}

.banner-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    max-height: 200px;
}

.accordion {
    width: 100%;
}

.accordion-item {
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    margin-bottom: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
    background: white;
}

.accordion-item:hover {
    border-color: #cbd5e1;
}

.accordion-item.active {
    border-color: #4a90e2;
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.15);
}

.accordion-header {
    padding: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
    transition: background 0.3s ease;
    user-select: none;
}

.accordion-item:hover .accordion-header {
    background: #f8fafc;
}

.accordion-item.active .accordion-header {
    background: #eff6ff;
}

.accordion-header span {
    color: #1e3a8a;
    font-size: 18px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.accordion-icon {
    color: #dc2626;
    font-size: 14px;
    transition: transform 0.3s ease;
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.accordion-body {
    padding: 0 20px 20px 20px;
    color: #334155;
    line-height: 1.8;
    font-size: 15px;
}

.accordion-body p {
    margin-bottom: 16px;
}

.accordion-body p:last-child {
    margin-bottom: 0;
}

.accordion-body ul {
    margin-left: 20px;
    margin-top: 12px;
    margin-bottom: 12px;
}

.accordion-body li {
    margin-bottom: 8px;
}

.image-container {
    text-align: center;
    padding: 20px 0;
}

.info-image {
    max-width: 50%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 20px;
        border-radius: 15px;
    }

    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    header h1 {
        font-size: 28px;
    }

    .accordion-header {
        padding: 16px;
    }

    .accordion-header span {
        font-size: 16px;
    }

    .accordion-body {
        padding: 0 16px 16px 16px;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    .container {
        padding: 16px;
    }

    header h1 {
        font-size: 24px;
    }

    .accordion-header {
        padding: 14px;
    }

    .accordion-header span {
        font-size: 14px;
    }

    .accordion-body {
        padding: 0 14px 14px 14px;
        font-size: 13px;
    }
}