body.course-summary-open {
    overflow: hidden;
}

.course-summary-return-button {
    position: fixed;
    right: clamp(18px, 2vw, 36px);
    bottom: clamp(18px, 2vw, 36px);
    z-index: 1800;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 0 14px;
    border: 1px solid #d9e1f1;
    border-radius: 12px;
    background: rgba(255, 255, 255, .96);
    color: #536edc;
    font-size: 13px;
    font-weight: 800;
    text-decoration: none;
    box-shadow: 0 10px 24px rgba(48, 64, 95, .16);
    transition: transform .18s ease, background .18s ease, border-color .18s ease;
}

.course-summary-return-button:hover,
.course-summary-return-button:focus-visible {
    border-color: #536edc;
    background: #eef2ff;
    transform: translateY(-1px);
}

.course-summary-screen {
    position: fixed;
    inset: 0;
    z-index: 2000;
    overflow: auto;
    padding: 28px clamp(16px, 4vw, 72px) 40px;
    background: #f4f7fb;
    color: #18243d;
}

.course-summary-topbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    max-width: 1180px;
    margin: 0 auto 22px;
}

.course-summary-menu {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    min-height: 48px;
    padding: 0 18px;
    border: 1px solid #dce3f0;
    border-radius: 999px;
    background: #fff;
    color: #53627c;
    font: inherit;
    font-weight: 800;
    text-decoration: none;
    box-shadow: 0 10px 24px rgba(48, 64, 95, .08);
    cursor: pointer;
}

.course-summary-menu span {
    color: #ee6c52;
    font-size: 20px;
    line-height: 1;
}

.course-summary-card {
    max-width: 1180px;
    margin: 0 auto;
    padding: clamp(24px, 4vw, 46px);
    border: 1px solid #d9e1ee;
    border-radius: 28px;
    background: #fff;
    box-shadow: 0 22px 65px rgba(45, 61, 92, .13);
}

.course-summary-kicker {
    margin: 0 0 8px;
    color: #ef6c4f;
    font-size: 13px;
    font-weight: 900;
    letter-spacing: .13em;
}

.course-summary-card h1 {
    margin: 0;
    color: #18243d;
    font-size: clamp(30px, 4vw, 48px);
    line-height: 1.1;
}

.course-summary-level-list {
    margin-top: 30px;
    overflow: hidden;
    border: 1px solid #dfe6f4;
    border-radius: 20px;
    background: #fff;
}

.course-summary-level-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    min-height: 86px;
    padding: 17px 22px;
    border-top: 1px solid #e8edf6;
    background: #fff;
}

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

.course-summary-level-row.is-current {
    background: #f4fbf9;
}

.course-summary-level-info {
    display: flex;
    align-items: center;
    gap: 16px;
    min-width: 0;
    color: #263653;
}

.course-summary-level-info strong {
    overflow-wrap: anywhere;
    font-size: 1.05rem;
    line-height: 1.35;
}

.course-summary-level-number {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: 15px;
    background: #edf2ff;
    color: #536edc;
    font-weight: 800;
    font-size: 1.05rem;
}

.course-summary-level-link {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-width: 164px;
    padding: 12px 16px;
    border: 1px solid #d6e0f5;
    border-radius: 12px;
    background: #fbfcff;
    color: #536edc;
    font-weight: 800;
    text-decoration: none;
    transition: background .18s ease, border-color .18s ease, transform .18s ease;
}

.course-summary-level-link:hover,
.course-summary-level-link:focus-visible {
    border-color: #536edc;
    background: #eef2ff;
    transform: translateY(-1px);
}

.course-summary-empty {
    margin: 0;
    padding: 22px;
    color: #7483a0;
}

.course-summary-action {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    min-height: 42px;
    padding: 0 15px;
    border: 1px solid #dce3f0;
    border-radius: 12px;
    color: #4f61d1;
    font: inherit;
    font-size: 14px;
    font-weight: 900;
    text-decoration: none;
    cursor: pointer;
}

.course-summary-action:hover {
    transform: translateY(-1px);
}

.course-summary-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 26px;
}

.course-summary-action {
    min-width: 155px;
}

.course-summary-action--secondary {
    background: #f5f7ff;
}

.course-summary-action--ghost {
    background: #fff;
    color: #596780;
}

.course-summary-action--primary {
    border-color: transparent;
    background: linear-gradient(110deg, #3263eb, #7130dc);
    color: #fff;
    box-shadow: 0 12px 28px rgba(70, 76, 218, .22);
}

.course-summary-action--primary:disabled {
    cursor: not-allowed;
    opacity: .55;
}

.course-summary-next-note {
    margin: 15px 0 0;
    color: #7b89a0;
    text-align: right;
    font-size: 14px;
}

@media (max-width: 720px) {
    .course-summary-screen {
        padding: 16px 12px 28px;
    }

    .course-summary-topbar {
        margin-bottom: 14px;
    }

    .course-summary-card {
        padding: 22px 15px;
        border-radius: 22px;
    }

    .course-summary-actions > * {
        flex: 1 1 100%;
    }

    .course-summary-level-row {
        align-items: stretch;
        flex-direction: column;
        gap: 14px;
    }

    .course-summary-level-link {
        width: 100%;
    }

    .course-summary-next-note {
        text-align: left;
    }
}