.page-hero {
    position: relative;
    padding: 80px 0 70px;
    text-align: center;
    color: var(--white);
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    min-height: 280px;
    display: flex;
    align-items: center;
}
.page-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(10,22,40,0.8) 0%, rgba(26,82,118,0.6) 50%, rgba(0,0,0,0.4) 100%);
    z-index: 1;
}
.page-hero .container {
    position: relative;
    z-index: 2;
}
.page-hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}
.page-hero p {
    font-size: 1rem;
    color: rgba(255,255,255,0.85);
    max-width: 640px;
    margin: 0 auto;
}
.page-breadcrumb {
    padding: 12px 0;
    background: var(--gray-100);
    border-bottom: 1px solid var(--gray-200);
}
.page-breadcrumb .container {
    font-size: 0.85rem;
    color: var(--gray-500);
}
.page-breadcrumb .container a {
    color: var(--primary);
}
.page-breadcrumb .container a:hover {
    text-decoration: underline;
}
.page-breadcrumb .container .sep {
    color: var(--gray-300);
    margin: 0 8px;
}
.certificate-detail {
    background: var(--white);
}
.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-bottom: 50px;
    align-items: start;
}
.detail-image-wrapper {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
}
.detail-image-wrapper img {
    width: 100%;
    height: auto;
    max-height: 500px;
    object-fit: contain;
    display: block;
    padding: 20px;
}
.detail-image-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--secondary);
    color: var(--white);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    box-shadow: 0 4px 12px rgba(230, 126, 34, 0.3);
}
.detail-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.detail-info .badge {
    align-self: flex-start;
}
.detail-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
    line-height: 1.25;
}
.detail-meta {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    font-size: 0.85rem;
    color: var(--gray-500);
    padding-bottom: 16px;
    border-bottom: 1px solid var(--gray-200);
}
.detail-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.detail-meta-item .icon {
    font-size: 1rem;
}
.detail-description {
    font-size: 1.02rem;
    color: var(--gray-600);
    line-height: 1.8;
}
.detail-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 8px;
}
.detail-actions .btn {
    padding: 12px 32px;
}
.detail-content {
    border-top: 1px solid var(--gray-200);
    padding-top: 40px;
    margin-top: 10px;
}
.detail-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 16px;
}
.detail-content-body {
    font-size: 1rem;
    color: var(--gray-600);
    line-height: 1.8;
}
.detail-content-body p {
    margin-bottom: 16px;
}
.detail-content-body ul,
.detail-content-body ol {
    margin: 12px 0 16px 24px;
}
.detail-content-body li {
    margin-bottom: 6px;
}
.detail-content-body img {
    max-width: 100%;
    height: auto;
    margin: 16px 0;
    border-radius: 4px;
}
.detail-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    border-top: 1px solid var(--gray-200);
    padding-top: 30px;
    margin-top: 40px;
}
.detail-navigation .nav-prev {
    text-align: left;
}
.detail-navigation .nav-next {
    text-align: right;
}
.detail-navigation .nav-label {
    display: block;
    font-size: 0.75rem;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}
.detail-navigation .nav-link {
    font-size: 0.95rem;
    color: var(--primary);
    transition: var(--transition);
}
.detail-navigation .nav-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}
.detail-navigation .nav-link.disabled {
    color: var(--gray-400);
    cursor: default;
}
.detail-navigation .nav-link.disabled:hover {
    color: var(--gray-400);
    text-decoration: none;
}
.page-cta {
    background: var(--gradient-accent);
    padding: 50px 0;
    text-align: center;
    color: var(--white);
}
.page-cta h2 {
    font-size: 2rem;
    color: var(--white);
    margin-bottom: 12px;
}
.page-cta p {
    font-size: 1.05rem;
    opacity: 0.85;
    max-width: 520px;
    margin: 0 auto 24px;
}
@media (max-width: 992px) {
    .page-hero { padding: 60px 0 50px; min-height: 240px; }
    .page-hero h1 { font-size: 2rem; }
    .detail-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .detail-image-wrapper img {
        max-height: 400px;
    }
    .detail-title {
        font-size: 1.7rem;
    }
    .detail-navigation {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .detail-navigation .nav-next {
        text-align: left;
    }
}
@media (max-width: 768px) {
    .page-hero { padding: 50px 0 40px; min-height: 200px; }
    .page-hero h1 { font-size: 1.6rem; }
    .page-hero p { font-size: 0.95rem; }
    .detail-image-wrapper img {
        max-height: 300px;
        padding: 14px;
    }
    .detail-image-badge {
        top: 12px;
        right: 12px;
        padding: 4px 12px;
        font-size: 0.65rem;
    }
    .detail-title {
        font-size: 1.4rem;
    }
    .detail-meta {
        font-size: 0.8rem;
        gap: 16px;
    }
    .detail-description {
        font-size: 0.95rem;
    }
    .detail-actions .btn {
        padding: 10px 24px;
        font-size: 0.85rem;
    }
    .detail-content {
        padding-top: 28px;
    }
    .detail-content h3 {
        font-size: 1.1rem;
    }
    .detail-navigation {
        padding-top: 20px;
        margin-top: 28px;
    }
    .detail-navigation .nav-link {
        font-size: 0.85rem;
    }
    .page-cta { padding: 36px 0; }
    .page-cta h2 { font-size: 1.5rem; }
    .page-cta p { font-size: 0.95rem; }
}
@media (max-width: 480px) {
    .page-hero { padding: 40px 0 30px; min-height: 170px; }
    .page-hero h1 { font-size: 1.3rem; }
    .detail-image-wrapper img {
        max-height: 220px;
        padding: 10px;
    }
    .detail-title {
        font-size: 1.2rem;
    }
    .detail-meta {
        font-size: 0.72rem;
        gap: 10px;
        flex-direction: column;
    }
    .detail-description {
        font-size: 0.9rem;
    }
    .detail-actions {
        flex-direction: column;
    }
    .detail-actions .btn {
        width: 100%;
        justify-content: center;
    }
    .detail-content-body {
        font-size: 0.92rem;
    }
    .detail-content-body ul,
    .detail-content-body ol {
        margin-left: 16px;
    }
    .detail-navigation .nav-link {
        font-size: 0.8rem;
        word-break: break-word;
    }
    .page-cta h2 { font-size: 1.3rem; }
    .page-cta p { font-size: 0.9rem; }
    .page-cta .btn-white { padding: 12px 28px; font-size: 0.9rem; }
}