.portfolio-resource__breadcrumb {
    border-bottom: 1px solid #e2e8f0;
    background: #fff;
}

.portfolio-resource__nav-row {
    display: flex;
    align-items: center;
    gap: 16px;
    min-height: 56px;
    padding: 8px 0;
}

.portfolio-resource__back-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 36px;
    padding: 0 14px;
    border: 1px solid #e2e8f0;
    border-radius: 9px;
    background: #f8fafc;
    color: #475569;
    font-size: 13.5px;
    font-weight: 600;
    text-decoration: none;
    flex-shrink: 0;
    transition: all .2s ease;
}

.portfolio-resource__back-btn:hover {
    background: #285bad;
    border-color: #285bad;
    color: #ffffff;
    box-shadow: 0 3px 10px rgba(40, 91, 173, 0.22);
    transform: translateX(-1px);
}

.portfolio-resource__back-btn svg {
    transition: transform .2s ease;
}

.portfolio-resource__back-btn:hover svg {
    transform: translateX(-2px);
}

.portfolio-resource__breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
    padding: 0;
    overflow-x: auto;
    color: #64748b;
    font-size: 13.5px;
    list-style: none;
    white-space: nowrap;
    scrollbar-width: none;
}

.portfolio-resource__breadcrumb-list::-webkit-scrollbar {
    display: none;
}

.portfolio-resource__breadcrumb-list li {
    overflow: hidden;
    text-overflow: ellipsis;
}

.portfolio-resource__breadcrumb-list li:not(:last-child)::after {
    margin-left: 8px;
    color: #94a3b8;
    content: '/';
}

.portfolio-resource__breadcrumb-list a {
    color: #285bad;
    font-weight: 600;
    text-decoration: none;
    transition: color .2s ease;
}

.portfolio-resource__breadcrumb-list a:hover {
    color: #1a3c75;
    text-decoration: underline;
}

.portfolio-resource__breadcrumb-list li[aria-current="page"] {
    color: #0f172a;
    font-weight: 500;
    max-width: 460px;
    overflow: hidden;
    text-overflow: ellipsis;
}

@media (max-width: 640px) {
    .portfolio-resource__nav-row {
        gap: 10px;
    }

    .portfolio-resource__back-btn span {
        display: none;
    }

    .portfolio-resource__back-btn {
        padding: 0 10px;
    }
}

.portfolio-resource {
    padding: 56px 0 72px;
    background: #f8fafc;
}

.portfolio-resource__layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 28px;
    align-items: start;
}

.portfolio-resource__content,
.portfolio-resource__sidebar > * {
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    background: #fff;
}

.portfolio-resource__content {
    padding: 40px;
}

.portfolio-resource__share > div {
    display: flex;
    align-items: center;
}

.portfolio-resource__meta {
    display: inline-flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    color: #64748b;
    font-size: 13.5px;
    line-height: 1;
}

.portfolio-resource__type {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: #285bad;
    font-weight: 700;
    line-height: 1;
}

.portfolio-resource__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.portfolio-resource__icon svg,
.portfolio-resource__type svg {
    width: 18px;
    height: 18px;
    max-width: 18px;
    max-height: 18px;
    display: block;
    vertical-align: middle;
}

.portfolio-resource__badge {
    color: #285bad;
    font-weight: 700;
    font-size: 13px;
    line-height: 1;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    display: inline-flex;
    align-items: center;
}

.portfolio-resource__dot {
    color: #94a3b8;
    font-size: 14px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
}

.portfolio-resource__year {
    color: #64748b;
    font-weight: 500;
    font-size: 13.5px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
}

.portfolio-resource__title {
    margin: 18px 0 28px;
    color: #172b4d;
    font-size: clamp(28px, 3vw, 42px);
    font-weight: 750;
    line-height: 1.2;
}

.portfolio-resource__description {
    color: #475569;
    font-size: 16px;
    line-height: 1.8;
}

.portfolio-resource__description > :first-child {
    margin-top: 0;
}

.portfolio-resource__description > :last-child {
    margin-bottom: 0;
}

.portfolio-resource__section {
    margin-top: 36px;
    padding-top: 30px;
    border-top: 1px solid #e2e8f0;
}

.portfolio-resource__section h2 {
    margin: 0 0 18px;
    color: #172b4d;
    font-size: 20px;
    font-weight: 700;
}

.portfolio-resource__video {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-radius: 14px;
    background: #0f172a;
}

.portfolio-resource__video iframe {
    position: absolute;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
    border: 0;
}

.portfolio-resource__details {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin: 0;
}

.portfolio-resource__details > div {
    padding: 14px 16px;
    border-radius: 10px;
    background: #f8fafc;
}

.portfolio-resource__details dt {
    margin-bottom: 5px;
    color: #64748b;
    font-size: 12px;
    font-weight: 600;
}

.portfolio-resource__details dd {
    margin: 0;
    color: #1e293b;
    font-size: 14px;
    font-weight: 600;
    overflow-wrap: anywhere;
}

.portfolio-resource__details a,
.portfolio-resource__author a {
    color: #285bad;
    text-decoration: none;
}

.portfolio-resource__files {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.portfolio-resource__files a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 13px 15px;
    border: 1px solid #dbeafe;
    border-radius: 10px;
    color: #285bad;
    background: #f8fbff;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
}

.portfolio-resource__sidebar {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.portfolio-resource__author,
.portfolio-resource__share {
    padding: 20px;
}

.portfolio-resource__author > span,
.portfolio-resource__share > span {
    display: block;
    margin-bottom: 9px;
    color: #64748b;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.portfolio-resource__author a {
    font-size: 17px;
    font-weight: 700;
}

.portfolio-resource__author p {
    margin: 8px 0 0;
    color: #64748b;
    font-size: 13px;
    line-height: 1.5;
}

.portfolio-resource__external-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    color: #fff;
    background: #285bad;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
}

.portfolio-resource__share > div {
    flex-wrap: wrap;
    gap: 8px;
}

.portfolio-resource__share a {
    padding: 7px 10px;
    border-radius: 7px;
    color: #475569;
    background: #f1f5f9;
    font-size: 12px;
    font-weight: 600;
    text-decoration: none;
}

@media (max-width: 991px) {
    .portfolio-resource__layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 575px) {
    .portfolio-resource {
        padding: 32px 0 48px;
    }

    .portfolio-resource__content {
        padding: 24px 18px;
    }

    .portfolio-resource__details {
        grid-template-columns: 1fr;
    }
}