.course-detail-body {
    background: var(--home-bg);
}

.course-detail-hero {
    color: #ffffff;
    border-bottom: 1px solid var(--home-line);
    background: var(--home-brand);
}

.course-detail-hero__inner,
.course-curriculum__inner,
.course-interest__inner {
    width: min(calc(100% - 64px), var(--home-max-width));
    margin: 0 auto;
}

.course-detail-hero__inner {
    min-height: 540px;
    display: grid;
    grid-template-columns: minmax(0, 1.12fr) minmax(360px, 0.88fr);
    gap: clamp(52px, 7vw, 104px);
    align-items: center;
}

.course-detail-hero__copy,
.course-detail-hero__visual {
    min-width: 0;
}

.course-detail-hero__copy {
    padding: clamp(76px, 8vw, 112px) 0;
}

.course-detail-eyebrow {
    display: flex;
    margin: 0 0 25px;
    color: var(--home-brand);
    font-size: 0.72rem;
    font-weight: 760;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    align-items: center;
    gap: 14px;
}

.course-detail-hero .course-detail-eyebrow {
    color: rgba(255, 255, 255, 0.72);
}

.course-detail-eyebrow::before {
    width: 30px;
    height: 1px;
    background: var(--home-accent);
    content: "";
}

.course-detail-hero h1 {
    max-width: 760px;
    margin: 0;
    color: #ffffff;
    font-size: clamp(3rem, 5.3vw, 5.1rem);
    font-weight: 670;
    line-height: 0.99;
    overflow-wrap: anywhere;
    letter-spacing: -0.055em;
}

.course-detail-hero__description {
    max-width: 610px;
    margin: 30px 0 0;
    color: rgba(255, 255, 255, 0.78);
    font-size: 1.02rem;
    line-height: 1.7;
}

.course-detail-hero__actions {
    display: flex;
    margin-top: 34px;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px 28px;
}

.course-detail-button {
    display: inline-flex;
    min-height: 46px;
    color: var(--home-brand-dark);
    font-size: 0.86rem;
    font-weight: 700;
    text-decoration: none;
    align-items: center;
    justify-content: center;
    gap: 9px;
}

.course-detail-button--primary {
    padding: 0 21px;
    color: var(--home-brand-dark);
    background: var(--home-accent);
}

.course-detail-button--secondary {
    border-bottom: 1px solid rgba(255, 255, 255, 0.48);
    color: #ffffff;
}

.course-detail-button span,
.course-interest a span {
    color: var(--home-accent);
    transition: transform 160ms ease;
}

.course-detail-button--primary span {
    color: var(--home-brand-dark);
}

.course-detail-button--primary:hover span,
.course-detail-button--primary:focus-visible span {
    transform: translateY(3px);
}

.course-detail-button--secondary:hover span,
.course-detail-button--secondary:focus-visible span,
.course-interest a:hover span,
.course-interest a:focus-visible span {
    transform: translateX(3px);
}

.course-detail-button:focus-visible,
.course-interest a:focus-visible {
    outline: 2px solid var(--home-accent);
    outline-offset: 4px;
}

.course-detail-hero__visual {
    position: relative;
    overflow: hidden;
    min-height: 390px;
    align-self: stretch;
}

.course-detail-hero__visual--photo picture,
.course-detail-hero__visual--photo img {
    width: 100%;
    height: 100%;
    display: block;
}

.course-detail-hero__visual--photo img {
    object-fit: cover;
    object-position: center;
}

.course-detail-hero__visual--photo::after {
    position: absolute;
    inset: 0;
    background: rgba(8, 47, 60, 0.1);
    content: "";
}

.course-detail-hero__visual--neutral {
    background-color: #e9efee;
    background-image:
        linear-gradient(rgba(0, 67, 88, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 67, 88, 0.06) 1px, transparent 1px);
    background-size: 42px 42px;
}

.course-detail-hero__visual--neutral::before {
    position: absolute;
    top: 0;
    right: 0;
    width: 31%;
    height: 100%;
    background: rgba(0, 67, 88, 0.16);
    content: "";
}

.course-detail-hero__reference,
.course-detail-hero__axis {
    position: absolute;
    z-index: 1;
    top: 28px;
    left: 28px;
    color: var(--home-brand);
    font-size: 0.62rem;
    font-weight: 740;
    letter-spacing: 0.15em;
}

.course-detail-hero__axis {
    color: rgba(255, 255, 255, 0.76);
}

.course-detail-hero__frame {
    position: absolute;
    right: 20%;
    bottom: 24%;
    width: 54%;
    height: 49%;
    border-top: 2px solid rgba(0, 67, 88, 0.72);
    border-right: 2px solid rgba(0, 67, 88, 0.72);
    border-left: 2px solid rgba(0, 67, 88, 0.72);
}

.course-detail-hero__frame::before {
    position: absolute;
    top: 48%;
    right: 0;
    left: 0;
    height: 1px;
    background: rgba(0, 67, 88, 0.38);
    content: "";
}

.course-detail-hero__diagonal,
.course-detail-hero__line {
    position: absolute;
    height: 1px;
    transform-origin: left center;
}

.course-detail-hero__diagonal {
    right: 17%;
    bottom: 24%;
    left: 18%;
    background: rgba(0, 67, 88, 0.3);
    transform: rotate(-8deg);
}

.course-detail-hero__line {
    z-index: 1;
    right: 28px;
    bottom: 36px;
    left: 55%;
    background: rgba(255, 255, 255, 0.66);
}

.course-detail-hero__node {
    position: absolute;
    z-index: 2;
    right: 24px;
    bottom: 32px;
    width: 9px;
    height: 9px;
    border: 2px solid var(--home-accent);
    border-radius: 50%;
    background: var(--home-brand-dark);
}

.course-detail-hero__visual--neutral .course-detail-hero__node {
    right: calc(20% - 4px);
    bottom: calc(24% + 49% - 5px);
    background: #e9efee;
}

.course-curriculum {
    padding: clamp(88px, 10vw, 140px) 0 clamp(98px, 11vw, 154px);
    scroll-margin-top: 24px;
    background: var(--home-bg);
}

.course-curriculum__header {
    display: grid;
    margin-bottom: clamp(48px, 6vw, 78px);
    grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr);
    gap: clamp(42px, 7vw, 96px);
    align-items: end;
}

.course-curriculum__header .course-detail-eyebrow {
    margin-bottom: 8px;
}

.course-curriculum__header h2 {
    margin: 0;
    color: var(--home-text);
    font-size: clamp(2.25rem, 4.1vw, 3.85rem);
    font-weight: 660;
    line-height: 1.05;
    letter-spacing: -0.05em;
}

.course-curriculum__heading p {
    max-width: 610px;
    margin: 22px 0 0;
    color: var(--home-muted);
    font-size: 0.96rem;
    line-height: 1.7;
}

.course-curriculum--empty {
    padding-top: clamp(68px, 7vw, 96px);
    padding-bottom: clamp(72px, 7vw, 102px);
}

.course-curriculum--empty .course-curriculum__header {
    margin-bottom: 0;
}

.course-curriculum__list {
    border-top: 1px solid rgba(0, 67, 88, 0.2);
}

.course-subcourse {
    border-bottom: 1px solid rgba(0, 67, 88, 0.2);
}

.course-subcourse > summary,
.course-topic > summary {
    position: relative;
    display: grid;
    color: var(--home-text);
    list-style: none;
    cursor: pointer;
    align-items: center;
}

.course-subcourse > summary {
    min-height: 112px;
    padding: 22px 64px 22px 0;
    grid-template-columns: minmax(120px, 0.32fr) minmax(0, 1.68fr);
    gap: 28px;
}

.course-subcourse > summary::-webkit-details-marker,
.course-topic > summary::-webkit-details-marker {
    display: none;
}

.course-subcourse__label,
.course-topic > summary > span:first-child {
    color: var(--home-brand);
    font-size: 0.69rem;
    font-weight: 750;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.course-subcourse > summary strong {
    font-size: clamp(1.35rem, 2.1vw, 1.8rem);
    font-weight: 650;
    line-height: 1.25;
}

.course-curriculum__toggle {
    position: absolute;
    top: 50%;
    right: 12px;
    width: 18px;
    height: 18px;
    transform: translateY(-50%);
}

.course-curriculum__toggle::before,
.course-curriculum__toggle::after {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 12px;
    height: 1px;
    background: var(--home-accent);
    content: "";
    transform: translate(-50%, -50%);
}

.course-curriculum__toggle::after {
    transform: translate(-50%, -50%) rotate(90deg);
}

.course-subcourse[open] > summary .course-curriculum__toggle::after,
.course-topic[open] > summary .course-curriculum__toggle::after {
    display: none;
}

.course-subcourse__content {
    padding: 0 0 32px clamp(48px, 7vw, 104px);
}

.course-topic {
    border-top: 1px solid var(--home-line);
}

.course-topic > summary {
    min-height: 82px;
    padding: 18px 56px 18px 0;
    grid-template-columns: minmax(96px, 0.25fr) minmax(0, 1.75fr);
    gap: 22px;
}

.course-topic > summary strong {
    font-size: 1rem;
    font-weight: 640;
    line-height: 1.4;
}

.course-topic__content {
    padding: 0 0 18px clamp(34px, 5vw, 70px);
}

.course-class-list {
    margin: 0 0 0 8px;
    padding: 0 0 0 clamp(24px, 3vw, 38px);
    border-left: 1px solid rgba(0, 67, 88, 0.18);
    list-style: none;
}

.course-class-list li {
    position: relative;
    min-height: 54px;
    display: grid;
    border-top: 1px solid rgba(0, 67, 88, 0.1);
    color: var(--home-muted);
    font-size: 0.91rem;
    line-height: 1.45;
    grid-template-columns: minmax(76px, 0.18fr) minmax(0, 1fr);
    gap: 14px;
    align-items: center;
}

.course-class-list__number {
    color: rgba(0, 67, 88, 0.55);
    font-size: 0.68rem;
    font-weight: 720;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.course-class-list__node {
    position: absolute;
    top: 50%;
    left: calc(0px - clamp(24px, 3vw, 38px) - 4px);
    width: 7px;
    height: 7px;
    border: 1px solid var(--home-accent);
    border-radius: 50%;
    background: var(--home-bg);
    transform: translateY(-50%);
}

.course-curriculum__branch-empty {
    color: var(--home-muted);
    font-size: 0.94rem;
    line-height: 1.65;
}

.course-curriculum__branch-empty {
    margin: 0;
}

.course-curriculum__branch-empty {
    padding: 8px 0 20px;
}

.course-subcourse > summary:hover strong,
.course-subcourse > summary:focus-visible strong,
.course-topic > summary:hover strong,
.course-topic > summary:focus-visible strong {
    color: var(--home-brand);
}

.course-subcourse > summary:focus-visible,
.course-topic > summary:focus-visible {
    outline: 2px solid var(--home-accent);
    outline-offset: 4px;
}

.course-interest {
    color: #ffffff;
    background: var(--home-brand-dark);
}

.course-interest__inner {
    min-height: 330px;
    display: grid;
    padding: 64px 0;
    grid-template-columns: minmax(0, 1.35fr) minmax(220px, 0.65fr);
    gap: clamp(42px, 8vw, 116px);
    align-items: center;
}

.course-interest__eyebrow {
    margin: 0 0 18px;
    color: rgba(255, 255, 255, 0.64);
    font-size: 0.7rem;
    font-weight: 740;
    letter-spacing: 0.17em;
    text-transform: uppercase;
}

.course-interest h2 {
    margin: 0;
    color: #ffffff;
    font-size: clamp(2rem, 3.4vw, 3.2rem);
    font-weight: 640;
    line-height: 1.1;
    letter-spacing: -0.045em;
}

.course-interest a {
    display: inline-flex;
    min-height: 48px;
    padding: 0 22px;
    color: var(--home-brand-dark);
    font-size: 0.87rem;
    font-weight: 720;
    text-decoration: none;
    background: var(--home-accent);
    align-items: center;
    justify-content: center;
    gap: 9px;
}

.course-interest a span {
    color: var(--home-brand-dark);
}

@media (max-width: 1024px) {
    .course-detail-hero__inner {
        min-height: 500px;
        grid-template-columns: minmax(0, 1.1fr) minmax(310px, 0.9fr);
        gap: 44px;
    }

    .course-detail-hero__visual {
        min-height: 350px;
    }

    .course-interest__inner {
        min-height: 300px;
    }
}

@media (max-width: 768px) {
    .course-detail-hero__inner,
    .course-curriculum__inner,
    .course-interest__inner {
        width: min(calc(100% - 40px), var(--home-max-width));
    }

    .course-detail-hero__inner,
    .course-curriculum__header,
    .course-interest__inner {
        grid-template-columns: 1fr;
    }

    .course-detail-hero__inner {
        min-height: 0;
        gap: 0;
    }

    .course-detail-hero__copy {
        padding: 70px 0 64px;
    }

    .course-detail-hero__visual {
        min-height: clamp(240px, 62vw, 390px);
    }

    .course-curriculum__header {
        gap: 17px;
    }

    .course-subcourse > summary,
    .course-topic > summary {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .course-subcourse__content {
        padding-left: 32px;
    }

    .course-topic__content {
        padding-left: 24px;
    }

    .course-interest__inner {
        min-height: 0;
        gap: 34px;
    }

    .course-interest a {
        justify-self: start;
    }
}

@media (max-width: 480px) {
    .course-detail-hero__inner,
    .course-curriculum__inner,
    .course-interest__inner {
        width: calc(100% - 32px);
    }

    .course-detail-hero__copy {
        padding: 58px 0 52px;
    }

    .course-detail-hero h1 {
        font-size: clamp(2.35rem, 12vw, 3.05rem);
    }

    .course-detail-hero__actions {
        align-items: flex-start;
        flex-direction: column;
    }

    .course-curriculum {
        padding: 70px 0 82px;
    }

    .course-curriculum__header h2 {
        font-size: clamp(1.9rem, 8vw, 2.7rem);
    }

    .course-subcourse > summary {
        min-height: 100px;
        padding-right: 44px;
    }

    .course-topic > summary {
        min-height: 76px;
        padding-right: 42px;
    }

    .course-subcourse__content {
        padding-left: 20px;
    }

    .course-topic__content {
        padding-left: 12px;
    }

    .course-class-list li {
        grid-template-columns: 68px minmax(0, 1fr);
        gap: 9px;
    }

    .course-class-list {
        padding-left: 19px;
    }

    .course-class-list__node {
        left: -23px;
    }

    .course-interest__inner {
        padding: 58px 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .course-detail-button span,
    .course-interest a span {
        transition: none;
    }
}