body.course-page {
    --course-bg: #e6f2f0;
    --course-surface: rgba(255, 255, 255, 0.93);
    --course-ink: #052424;
    --course-ink-soft: #3a5454;
    --course-accent: #0d5c52;
    --course-accent-warm: #bf5718;
    --course-gold: #b8941c;
    --course-border: rgba(12, 68, 60, 0.16);
    --course-shadow: 0 20px 46px rgba(12, 48, 44, 0.12);
    background:
        radial-gradient(circle at 14% 4%, rgba(13, 92, 82, 0.07), transparent 26%),
        radial-gradient(circle at 90% 12%, rgba(191, 87, 24, 0.07), transparent 28%),
        #f0f6f5;
}

.course-hero,
.course-card {
    border-color: rgba(12, 68, 60, 0.13);
    background:
        radial-gradient(circle at top right, rgba(184, 148, 28, 0.12), transparent 34%),
        linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(245, 252, 250, 0.94));
}

.course-section-title {
    color: var(--course-accent);
}

.course-hero::before {
    background: linear-gradient(90deg, #0d5c52, #2aac96, #bf5718);
}

/* ── CTA buttons ─────────────────────────────────────────── */
.course-hero-cta-group {
    position: absolute;
    top: 18px;
    right: 22px;
    z-index: 1;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.course-hero-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.58);
    border-radius: 999px;
    background: linear-gradient(135deg, #0a4038, #1a8070);
    color: #fff;
    box-shadow: 0 8px 18px rgba(12, 48, 44, 0.16);
    font-family: var(--course-sans);
    font-size: 0.9rem;
    font-weight: 800;
    letter-spacing: 0.01em;
    padding: 10px 18px;
    text-decoration: none;
    transition: background 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.course-hero-cta:hover,
.course-hero-cta:focus-visible {
    background: linear-gradient(135deg, #bf5718, #e07840);
    color: #fff;
    box-shadow: 0 10px 20px rgba(12, 48, 44, 0.18);
    outline: none;
    transform: translateY(-1px);
}


/* ── Hero layout (no course image for STC) ───────────────── */
@media (min-width: 961px) {
    .course-hero {
        gap: 20px;
        padding: 30px 36px;
    }

    .course-summary {
        margin-top: 16px;
        line-height: 1.55;
    }

    .course-meta-grid {
        margin-top: 16px;
    }
}

/* ── Panel styling ───────────────────────────────────────── */
.course-panel {
    border: 1px solid rgba(12, 68, 60, 0.13);
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(245, 252, 250, 0.94) 100%);
    box-shadow: 0 16px 32px rgba(12, 48, 44, 0.07);
}

.course-panel::before { content: none; }
.course-panel::after  { content: none; }

.course-panel-summary {
    padding: 18px 20px 14px 24px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px 12px;
}

.course-panel-topline { flex: 0 0 auto; }

.course-panel-title-row {
    flex: 1 1 520px;
    min-width: 0;
    align-items: center;
}

.course-panel-range {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    border: 1px solid rgba(255, 255, 255, 0.52);
    border-radius: 999px;
    background: linear-gradient(135deg, #0a4038, #1a8070);
    color: #fff;
    box-shadow: 0 8px 18px rgba(12, 48, 44, 0.16);
}

.course-panel-title {
    color: #1a3630;
    font-size: 1.22rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.course-panel-content {
    padding: 22px 20px 22px 24px;
    border-top: 1px solid rgba(12, 68, 60, 0.1);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.58), rgba(255, 255, 255, 0.2));
}

.course-lecture-list { padding-left: 32px; }
.course-lecture-list::before { content: none; }

.course-lecture-list li { padding-left: 16px; }

.course-lecture-list li::before {
    z-index: 2;
    left: -32px;
    top: 0.54em;
    width: 16px;
    height: 16px;
    background: #f5fcfa;
    border: 3px solid var(--course-accent);
    box-shadow: 0 0 0 4px rgba(12, 68, 60, 0.08), 0 4px 10px rgba(12, 48, 44, 0.1);
}

.course-lecture-list li:not(:last-child)::after {
    content: "";
    position: absolute;
    z-index: 1;
    left: -23px;
    top: calc(0.54em + 8px);
    bottom: calc(-10px - 0.54em - 8px);
    width: 2px;
    border-radius: 999px;
    background: linear-gradient(180deg, rgba(12, 68, 60, 0.34), rgba(184, 148, 28, 0.28));
}

/* ── Full-width video strip ───────────────────────────────── */
.stc-media-panel {
    border: 1px solid var(--course-border);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--course-shadow);
    background: var(--course-surface);
}

.stc-video-col {
    display: flex;
    flex-direction: column;
    gap: 18px;
    padding: 36px;
}

.stc-video-label {
    margin: 0;
    color: var(--course-accent-warm);
    font-family: var(--course-sans);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

/* ── Footer ──────────────────────────────────────────────── */
.course-page-footer {
    position: relative;
    width: min(100% - 48px, 980px);
    margin: 34px auto 0;
    padding: 24px 28px;
    border: 1px solid rgba(12, 68, 60, 0.13);
    border-radius: 28px 28px 0 0;
    background:
        radial-gradient(circle at 14% 0%, rgba(184, 148, 28, 0.18), transparent 34%),
        linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(240, 252, 250, 0.94));
    box-shadow: 0 -6px 20px rgba(12, 48, 44, 0.05);
    color: var(--course-ink-soft);
    font-family: var(--course-sans);
    overflow: hidden;
}

.course-page-footer::before {
    content: "";
    position: absolute;
    inset: 0 0 auto;
    height: 4px;
    background: linear-gradient(90deg, #0d5c52, #2aac96, #bf5718);
}

.course-footer-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 14px 24px;
}

.course-footer-brand { display: grid; gap: 4px; }

.course-footer-title {
    margin: 0;
    color: var(--course-accent);
    font-size: 1rem;
    font-weight: 800;
}

.course-footer-copy {
    margin: 0;
    font-size: 0.94rem;
    line-height: 1.5;
}

.course-footer-logo {
    display: block;
    width: clamp(52px, 7vw, 80px);
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 6px 10px rgba(12, 48, 44, 0.1));
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 768px) {
    .stc-video-col {
        padding: 22px;
    }

    .course-hero-cta-group {
        position: static;
        margin-bottom: 18px;
    }

    .course-page-footer {
        width: min(100% - 24px, 980px);
    }
}