.academy-hero {
    background:
        radial-gradient(circle at top right, rgba(214,168,79,.3), transparent 30%),
        linear-gradient(135deg, #0b1120, #111827);
    color: white;
}

.academy-hero h1 {
    max-width: 850px;
    font-size: clamp(36px, 5vw, 62px);
    line-height: 1.02;
    margin: 14px 0;
}

.academy-hero p {
    max-width: 720px;
    color: #d1d5db;
    line-height: 1.75;
    font-size: 18px;
}

.course-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.course-card {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 28px;
    padding: 26px;
    box-shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.course-card h3 {
    font-size: 24px;
    margin: 0;
}

.course-card p {
    color: #6b7280;
    line-height: 1.7;
    flex: 1;
}

.course-meta,
.course-footer,
.course-badges {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
}

.course-meta span,
.course-meta strong,
.course-badges span {
    background: #f3f4f6;
    color: #374151;
    border-radius: 999px;
    padding: 8px 12px;
    font-size: 12px;
    font-weight: 800;
}

.course-meta strong {
    background: #fef3c7;
    color: #92400e;
}

.course-detail-head {
    display: grid;
    grid-template-columns: 1.3fr .7fr;
    gap: 28px;
    align-items: start;
    margin-bottom: 28px;
}

.course-detail-head h1 {
    font-size: clamp(34px, 5vw, 58px);
    line-height: 1.03;
    margin: 10px 0;
}

.course-detail-head p {
    color: #6b7280;
    line-height: 1.75;
}

.upgrade-box {
    background: #111827;
    color: white;
    border-radius: 28px;
    padding: 26px;
}

.upgrade-box p {
    color: #cbd5e1;
}

.lesson-list {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 28px;
    padding: 28px;
}

.lesson-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 16px 0;
    border-bottom: 1px solid #e5e7eb;
}

.lesson-row:last-child {
    border-bottom: 0;
}

.lesson-info {
    color: #6b7280;
    font-size: 13px;
    margin-top: 5px;
}

.lesson-page {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 30px;
    padding: 34px;
    box-shadow: 0 18px 50px rgba(15,23,42,.08);
}

.lesson-page h1 {
    font-size: clamp(32px, 5vw, 52px);
    line-height: 1.06;
}

.lesson-content {
    color: #374151;
    line-height: 1.9;
    font-size: 17px;
    margin: 28px 0;
}

.video-box {
    background: #111827;
    color: white;
    border-radius: 22px;
    padding: 22px;
    margin: 20px 0;
    font-weight: 800;
}

.video-box a {
    color: #d6a84f;
}

@media (max-width: 860px) {
    .course-grid,
    .course-detail-head {
        grid-template-columns: 1fr;
    }

    .lesson-row {
        align-items: flex-start;
        flex-direction: column;
    }
}