.course-v2 {
    padding-top: 0;
    padding-bottom: 40px;
}

.course-v2-page .circler-home__main {
    padding-top: 0;
}

.course-v2__hero {
    padding: 34px 0 10px;
}

.course-v2__hero-grid,
.course-v2__detail-layout,
.course-v2__layout {
    display: grid;
    gap: 24px;
}

.course-v2__hero-grid {
    grid-template-columns: minmax(0, 1.2fr) 360px;
    align-items: stretch;
}

.course-v2__eyebrow,
.course-v2__breadcrumb {
    color: #8ea1ac;
    font-size: 13px;
}

.course-v2__eyebrow {
    display: inline-block;
    margin-bottom: 12px;
    text-transform: uppercase;
}

.course-v2__hero-copy h1,
.course-v2__detail-copy h1 {
    margin: 0;
    font-size: 36px;
    line-height: 1.16;
}

.course-v2__hero-copy p,
.course-v2__detail-copy p {
    margin: 14px 0 0;
    color: #9fb1bb;
    font-size: 15px;
    line-height: 1.85;
}

.course-v2__hero-stats,
.course-v2__detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 22px;
}

.course-v2__hero-stats div,
.course-v2__detail-meta span {
    min-height: 48px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
}

.course-v2__hero-stats div {
    min-width: 136px;
    padding: 10px 14px;
}

.course-v2__hero-stats strong {
    display: block;
    font-size: 22px;
}

.course-v2__hero-stats span {
    display: block;
    margin-top: 4px;
    color: #8ea1ac;
    font-size: 13px;
}

.course-v2__hero-card,
.course-v2__content-card,
.course-v2__side-card,
.course-v2__catalogue-panel {
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    background: rgba(16, 26, 32, 0.9);
    box-shadow: 0 18px 54px rgba(0, 0, 0, 0.18);
}

.course-v2__hero-card {
    padding: 24px;
}

.course-v2__hero-card h2,
.course-v2__section-head h2,
.course-v2__side-head h3 {
    margin: 0;
    font-size: 20px;
}

.course-v2__hero-card p {
    margin: 12px 0 0;
    color: #9fb1bb;
    font-size: 14px;
    line-height: 1.8;
}

.course-v2__hero-links {
    display: grid;
    gap: 10px;
    margin-top: 18px;
}

.course-v2__hero-links a,
.course-v2__back-link {
    min-height: 44px;
    padding: 0 16px;
    border: 1px solid rgba(47, 226, 157, 0.2);
    border-radius: 12px;
    background: rgba(47, 226, 157, 0.06);
    color: #eafaf3;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.course-v2__section {
    padding-top: 22px;
}

.course-v2__layout,
.course-v2__detail-layout {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: start;
}

.course-v2__layout--library {
    grid-template-columns: minmax(0, 1fr) 300px;
    padding-top: 22px;
}

.course-v2__layout--full {
    grid-template-columns: minmax(0, 1fr);
}

.course-v2__section-head {
    margin-bottom: 18px;
}

.course-v2__library-head {
    margin-bottom: 22px;
    padding: 26px 28px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    background:
        radial-gradient(circle at top right, rgba(47, 226, 157, 0.14), transparent 28%),
        linear-gradient(180deg, rgba(16, 26, 32, 0.98) 0%, rgba(12, 20, 25, 0.96) 100%);
    box-shadow: 0 18px 54px rgba(0, 0, 0, 0.18);
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.9fr);
    gap: 22px;
    align-items: start;
}

.course-v2__library-copy h1 {
    margin: 0;
    font-size: 34px;
    line-height: 1.14;
}

.course-v2__library-copy p {
    max-width: 760px;
    margin: 14px 0 0;
    color: #9fb1bb;
    font-size: 15px;
    line-height: 1.85;
}

.course-v2__library-side {
    display: grid;
    gap: 14px;
}

.course-v2__library-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.course-v2__library-stats div {
    min-height: 92px;
    padding: 16px 16px 14px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.03);
}

.course-v2__library-stats strong {
    display: block;
    font-size: 26px;
    line-height: 1;
}

.course-v2__library-stats span {
    display: block;
    margin-top: 10px;
    color: #8ea1ac;
    font-size: 13px;
}

.course-v2__library-actions {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.course-v2__library-actions a {
    min-height: 52px;
    padding: 0 16px;
    border: 1px solid rgba(47, 226, 157, 0.16);
    border-radius: 14px;
    background: rgba(47, 226, 157, 0.05);
    color: #eef8fb;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 500;
}

.course-v2__library-actions i {
    color: #2fe29d;
    font-size: 16px;
}

.course-v2__course-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
}

.course-v2__course-card,
.course-v2__lesson-group,
.course-v2__article-nav-link {
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    background: rgba(16, 26, 32, 0.82);
    overflow: hidden;
}

.course-v2__course-thumb {
    display: block;
    aspect-ratio: 16 / 9;
    background: #0b1217;
}

.course-v2__course-thumb img,
.course-v2__detail-cover img,
.course-v2__article-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.course-v2__course-body {
    padding: 16px 18px 18px;
}

.course-v2__course-body h3 {
    margin: 0;
    font-size: 18px;
}

.course-v2__course-body p {
    margin: 12px 0 0;
    color: #9fb1bb;
    font-size: 14px;
    line-height: 1.8;
}

.course-v2__course-meta,
.course-v2__article-item span {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 14px;
    color: #7f919b;
    font-size: 12px;
}

.course-v2__sidebar {
    display: grid;
    gap: 16px;
}

.course-v2__side-card,
.course-v2__content-card,
.course-v2__catalogue-panel {
    padding: 20px;
}

.course-v2__article-list,
.course-v2__hot-list {
    display: grid;
    gap: 12px;
    margin-top: 16px;
}

.course-v2__article-item,
.course-v2__hot-item {
    display: grid;
    gap: 12px;
    color: #edf7fb;
}

.course-v2__article-item {
    grid-template-columns: 92px minmax(0, 1fr);
}

.course-v2__article-item img {
    aspect-ratio: 4 / 3;
    border-radius: 10px;
}

.course-v2__article-item strong,
.course-v2__hot-item strong {
    display: block;
    font-size: 14px;
    line-height: 1.65;
}

.course-v2__article-item em {
    margin-left: auto;
    font-style: normal;
}

.course-v2__hot-item {
    grid-template-columns: 32px minmax(0, 1fr);
    align-items: start;
}

.course-v2__hot-rank {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    background: rgba(47, 226, 157, 0.1);
    color: #2fe29d;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
}

.course-v2__detail-head {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 24px;
    align-items: center;
    padding-top: 10px;
}

.course-v2__detail-head--single {
    grid-template-columns: minmax(0, 1fr);
}

.course-v2__detail-cover {
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 16 / 10;
    background: rgba(255, 255, 255, 0.03);
}

.course-v2__detail-meta span {
    padding: 0 14px;
    color: #d7e4eb;
    font-size: 13px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.course-v2__hero--detail .course-v2__detail-meta span:nth-child(2) #course-detail-view-sum {
    padding: 0;
    border: 0;
    background: transparent;
    min-height: auto;
}

.course-v2__richtext {
    color: #dbe7ed;
    font-size: 15px;
    line-height: 1.95;
}

.course-v2__richtext img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
}

.course-v2__richtext h2,
.course-v2__richtext h3,
.course-v2__richtext h4 {
    margin-top: 1.8em;
    color: #f6fbff;
}

.course-v2__lesson-groups {
    display: grid;
    gap: 18px;
}

.course-v2__lesson-group-head {
    padding: 18px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.course-v2__lesson-group-head h3 {
    margin: 0;
    font-size: 18px;
}

.course-v2__lesson-group-list {
    padding: 6px 0;
}

.course-v2__lesson-row {
    min-height: 56px;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 32px minmax(0, 1fr) auto;
    align-items: center;
    gap: 14px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.course-v2__lesson-row:first-child {
    border-top: 0;
}

.course-v2__lesson-row-index,
.course-v2__lesson-index {
    color: #2fe29d;
    font-weight: 700;
}

.course-v2__lesson-row-title,
.course-v2__lesson-title {
    min-width: 0;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.course-v2__lesson-row-meta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #7f919b;
}

.course-v2__badge-mini {
    padding: 4px 8px;
    border-radius: 999px;
    background: rgba(244, 184, 61, 0.12);
    color: #ffcc65;
    font-style: normal;
    font-size: 12px;
}

.course-v2__badge-mini--free {
    background: rgba(47, 226, 157, 0.12);
    color: #62efb7;
}

.course-v2__searchbox {
    position: relative;
    margin-top: 16px;
}

.course-v2__searchbox i.bi-search {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: #7f919b;
}

.course-v2__searchbox input {
    width: 100%;
    height: 46px;
    padding: 0 44px 0 40px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
    color: #edf7fb;
    outline: 0;
}

.course-v2__searchbox input::placeholder {
    color: #7f919b;
}

.course-v2__search-clear {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    border: 0;
    background: transparent;
    color: #89a0aa;
}

.course-v2__search-results {
    margin-top: 12px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    background: rgba(9, 16, 21, 0.98);
    overflow: hidden;
}

.course-v2__search-result-title,
.course-v2__search-empty {
    padding: 12px 14px;
    color: #8ea1ac;
    font-size: 12px;
}

.course-v2__search-result-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.course-v2__search-result-item mark {
    padding: 0;
    color: #07140e;
    background: #2fe29d;
}

.course-v2__catalog {
    display: grid;
    gap: 12px;
    margin-top: 16px;
}

.course-v2__chapter {
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.02);
    overflow: hidden;
}

.course-v2__chapter-toggle {
    width: 100%;
    min-height: 48px;
    padding: 0 16px;
    border: 0;
    background: transparent;
    color: #edf7fb;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 14px;
    text-align: left;
}

.course-v2__chapter-toggle i {
    transition: transform .2s ease;
}

.course-v2__chapter-panel {
    display: none;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.course-v2__chapter-panel.is-open {
    display: block;
}

.course-v2__lesson-list {
    list-style: none;
    margin: 0;
    padding: 6px 0;
}

.course-v2__lesson-list li a {
    min-height: 44px;
    padding: 0 14px;
    display: grid;
    grid-template-columns: 24px minmax(0, 1fr) 20px;
    align-items: center;
    gap: 12px;
}

.course-v2__lesson-list li.is-current a {
    background: rgba(47, 226, 157, 0.08);
}

.course-v2__vip {
    color: #ffcc65;
    text-align: right;
}

.course-v2__article-nav {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.course-v2__article-nav-link {
    padding: 18px 20px;
    display: block;
}

.course-v2__article-nav-link small {
    display: block;
    color: #8ea1ac;
    font-size: 12px;
}

.course-v2__article-nav-link strong {
    display: block;
    margin-top: 8px;
    font-size: 15px;
    line-height: 1.65;
}

.course-v2__article-nav-link--center {
    text-align: center;
}

.course-v2__article-nav-link.is-next {
    text-align: right;
}

.course-v2__article-nav-link.is-disabled {
    color: #6b7b84;
}

.course-v2__catalogue-shell {
    max-width: 760px;
}

.course-v2__empty {
    padding: 32px 24px;
    border: 1px dashed rgba(255, 255, 255, 0.12);
    border-radius: 16px;
    color: #9fb1bb;
}

@media (max-width: 1400px) {
    .course-v2__course-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .course-v2__library-head {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1100px) {
    .course-v2__hero-grid,
    .course-v2__layout,
    .course-v2__detail-layout,
    .course-v2__detail-head {
        grid-template-columns: 1fr;
    }

    .course-v2__sidebar {
        order: -1;
    }
}

@media (max-width: 768px) {
    .course-v2__hero-copy h1,
    .course-v2__detail-copy h1,
    .course-v2__library-copy h1 {
        font-size: 28px;
    }

    .course-v2__course-grid,
    .course-v2__article-nav {
        grid-template-columns: 1fr;
    }

    .course-v2__library-head,
    .course-v2__library-stats,
    .course-v2__library-actions {
        grid-template-columns: 1fr;
    }

    .course-v2__library-head {
        padding: 22px 18px;
    }

    .course-v2__hero,
    .course-v2__section {
        padding-top: 18px;
    }

    .course-v2__lesson-row {
        grid-template-columns: 24px minmax(0, 1fr);
    }

    .course-v2__lesson-row-meta {
        grid-column: 2;
        justify-self: start;
        padding-bottom: 14px;
    }
}