:root {
    --font: 'Maison Neue', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --fs-xs: 10px;
    --fs-sm: 10.5px;
    --fs-md: 11.5px;
    --fs-lg: 12px;
    --fs-xl: 13px;
    --fs-2xl: 14px;
    --fs-3xl: 15px;
    --fs-4xl: 16px;
    --text-primary: #ffffff;
    --text-dark: #111111;
    --text-muted: #666666;
    --surface-base: #000000;
    --surface-navy: #1a244c;
    --surface-light: #ffffff;
    --accent: #ffa994;
    --radius-xs: 8px;
    --radius-sm: 10px;
    --radius-md: 12px;
    --radius-lg: 24px;
    --radius-pill: 999px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --dur: 200ms;
}


*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    -webkit-font-smoothing: antialiased;
    background: var(--surface-light);
    color: var(--text-dark);
}

img {
    display: block;
    max-width: 100%;
}

a {
    text-decoration: none;
    color: inherit;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: var(--radius-xs);
}

/* CONTAINER */
.sc-container {
    max-width: 1400px;
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    padding-left: 80px;
    padding-right: 80px;
}

/* BUTTONS */
.sc-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 11px 22px;
    border-radius: var(--radius-xs);
    font-family: var(--font);
    font-size: var(--fs-3xl);
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: background var(--dur), transform var(--dur);
    line-height: 1;
}

.sc-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

.sc-btn:active {
    transform: scale(.98);
}

.sc-btn--light {
    background: var(--surface-light);
    color: var(--text-dark);
    border: 1.5px solid rgba(255, 255, 255, .4);
}

.sc-btn--light:hover {
    background: rgba(255, 255, 255, .88);
}

.sc-btn--outline {
    background: transparent;
    color: var(--text-primary);
    border: 1.5px solid rgba(255, 255, 255, .35);
}

.sc-btn--outline:hover {
    background: rgba(255, 255, 255, .07);
}

/* SECTION PILL LABEL */
.sc-pill {
    display: inline-block;
    background: var(--accent);
    color: var(--surface-base);
    font-size: var(--fs-sm);
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    padding: 8px 24px;
    border-radius: var(--radius-xs);
    margin-bottom: 14px;
}

/* SECTION SHELLS */
.sc-section {
    padding: 64px 0;
}

.sc-section--light {
    background: var(--surface-light);
}

.sc-section--navy {
    background: var(--surface-navy);
    color: var(--text-primary);
}

.sc-section-hd {
    text-align: center;
    margin-bottom: 44px;
}

.sc-section-hd h2 {
    font-size: clamp(1.5rem, 2.6vw, 2rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -.02em;
    margin-bottom: 10px;
    
}

.sc-everything {
    color: white;
}

.sc-section-hd p {
    font-size: var(--fs-4xl);
    line-height: 1.65;
    opacity: .6;
    max-width: 540px;
    margin: 0 auto;
}

/* HERO */
.sc-hero {
    background: var(--surface-base);
    padding: 64px 0;
}

.sc-hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 48px;
}

.sc-hero-cats {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 24px;
}

.sc-tag {
    background: rgba(255, 255, 255, .1);
    color: rgba(255, 255, 255, .7);
    font-size: var(--fs-lg);
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    letter-spacing: .04em;
}

.sc-hero h1 {
    font-size: clamp(1.9rem, 3.2vw, 2.8rem);
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.1;
    letter-spacing: -.02em;
    margin-bottom: 32px;
}

.sc-hero-sub {
    font-size: var(--fs-4xl);
    color: rgba(255, 255, 255, .7);
    margin-bottom: 20px;
}

.sc-hero-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.sc-hero-rating {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: var(--fs-md);
    color: var(--accent);
}

.sc-hero-rating span {
    color: rgba(255, 255, 255, .5);
}

.sc-hero-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.sc-hero-author {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sc-hero-author img {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-pill);
    object-fit: cover;
    border: 2px solid rgba(255, 255, 255, .15);
}

.sc-hero-author-info {
    font-size: var(--fs-4xl);
    color: rgba(255, 255, 255, .5);
}

.sc-hero-author-info a {
    color: rgba(255, 255, 255, .85);
    font-weight: 600;
    text-decoration: underline;
    text-decoration-color: rgba(255, 255, 255, .2);
}

.sc-hero-author-info a:hover {
    text-decoration-color: rgba(255, 255, 255, .6);
}

.sc-hero-img {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    aspect-ratio: 4/3;
    background: var(--surface-navy);
}

.sc-hero-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sc-hero-img-empty {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 56px;
    color: rgba(255, 255, 255, .15);
}

/* TWO-COL LAYOUT */
.sc-two-col {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 48px;
    align-items: start;
}

/* CONTENT BODY */
.sc-content {
    font-size: var(--fs-4xl);
    line-height: 1.7;
    color: var(--text-muted);
}

.sc-content h3 {
    font-size: var(--fs-4xl);
    font-weight: 700;
    color: var(--text-dark);
    margin: 18px 0 8px;
}

.sc-content ul {
    padding-left: 20px;
}

.sc-content li {
    margin-bottom: 4px;
}

.sc-block-title {
    font-size: 24px;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 16px;
}

/* LEARN GRID */
.sc-learn-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px 20px;
    margin-bottom: 36px;
}

.sc-learn-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: var(--fs-4xl);
    color: var(--text-dark);
    line-height: 1.5;
    padding: 5px 0;
}

.sc-learn-item::before {
    content: '✓';
    color: var(--accent);
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 1px;
}

/* SIDEBAR */
.sc-sidebar {
    position: sticky;
    top: 112px;
}

.sc-sidebar-box {
    border: 1px solid rgba(0, 0, 0, .1);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.sc-sidebar-thumb {
    aspect-ratio: 16/9;
    background: var(--surface-navy);
    overflow: hidden;
}

.sc-sidebar-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sc-sidebar-body {
    padding: 20px;
}

.sc-sidebar-price {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 3px;
}

.sc-sidebar-note {
    font-size: var(--fs-md);
    color: var(--text-muted);
    margin: 14px 0;
}

.sc-sidebar-btn {
    display: block;
    width: 100%;
    text-align: center;
    padding: 12px;
    background: var(--surface-base);
    color: var(--text-primary);
    border-radius: var(--radius-xs);
    font-size: var(--fs-4xl);
    font-weight: 700;
    border: none;
    cursor: pointer;
    font-family: var(--font);
    transition: background var(--dur);
    margin-bottom: 24px;
}

.sc-sidebar-btn:hover {
    background: #1a1a1a;
}

.sc-sidebar-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

.sc-includes {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sc-includes li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: var(--fs-md);
    color: var(--text-muted);
}

.sc-includes li::before {
    content: '✓';
    color: var(--accent);
    font-weight: 700;
    flex-shrink: 0;
}

/* CURRICULUM */
.sc-curriculum-summary {
    font-size: var(--fs-xl);
    color: var(--text-muted);
    margin-bottom: 16px;
}

.sc-topic-title {
    flex: 1;
}

.sc-topic-meta {
    font-size: var(--fs-sm);
    font-weight: 400;
    color: var(--text-muted);
    margin-right: 8px;
    white-space: nowrap;
}

.sc-topic-chevron {
    flex-shrink: 0;
    transition: transform var(--dur);
}

.sc-topic.open .sc-topic-chevron {
    transform: rotate(180deg);
}

.sc-topic {
    border: 1px solid rgba(0, 0, 0, .08);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: 8px;
}

.sc-topic-trigger {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 13px 16px;
    background: var(--surface-gray);
    font-family: var(--font);
    font-size: var(--fs-4xl);
    font-weight: 600;
    color: var(--text-dark);
    border: none;
    cursor: pointer;
    text-align: left;
    gap: 10px;
    transition: background var(--dur);
}

.sc-topic-trigger:hover {
    background: #ebebeb;
}

.sc-topic-trigger svg {
    flex-shrink: 0;
    transition: transform var(--dur);
}

.sc-topic.open .sc-topic-trigger svg {
    transform: rotate(180deg);
}

.sc-topic-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height .28s ease;
}

.sc-topic.open .sc-topic-body {
    max-height: 800px;
}

.sc-lesson {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 16px;
    border-top: 1px solid rgba(0, 0, 0, .06);
    font-size: var(--fs-md);
    color: var(--text-muted);
}

.sc-lesson-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    color: var(--text-muted);
}

.sc-lesson--tutor_quiz .sc-lesson-icon {
    color: var(--surface-navy);
}

.sc-lesson--tutor_assignments .sc-lesson-icon {
    color: #7c5cbf;
}

.sc-lesson-title {
    flex: 1;
    color: var(--text-dark);
}

.sc-lesson-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.sc-lesson-preview {
    font-size: var(--fs-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--surface-navy);
    background: rgba(26, 36, 76, .08);
    padding: 2px 7px;
    border-radius: var(--radius-pill);
}

.sc-lesson-dur {
    font-size: var(--fs-xs);
    color: rgba(0, 0, 0, .35);
}

.sc-lesson-type {
    font-size: var(--fs-xs);
    color: rgba(0, 0, 0, .3);
    min-width: 56px;
    text-align: right;
}

.sc-no-lessons,
.sc-no-curriculum {
    font-size: var(--fs-md);
    color: var(--text-muted);
    padding: 12px 16px;
}

/* INSTRUCTOR CARD */
.sc-instructor {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 22px;
    background: var(--surface-gray);
    border-radius: var(--radius-md);
}

.sc-instructor img {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-pill);
    object-fit: cover;
    flex-shrink: 0;
}

.sc-inst-label {
    font-size: var(--fs-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--text-muted);
    margin-bottom: 3px;
}

.sc-inst-name {
    font-size: var(--fs-4xl);
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.sc-inst-bio {
    font-size: var(--fs-md);
    color: var(--text-muted);
    line-height: 1.6;
}

/* FEATURES GRID */
.sc-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.sc-feat {
    padding: 20px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .07);
    transition: background var(--dur);
}

.sc-feat:hover {
    background: rgba(255, 255, 255, .09);
}

.sc-feat-icon {
    font-size: 20px;
    margin-bottom: 10px;
}

.sc-feat h4 {
    font-size: var(--fs-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
    line-height: 1.4;
}

.sc-feat p {
    font-size: var(--fs-md);
    color: rgba(255, 255, 255, .5);
    line-height: 1.6;
}

.tutor-course-loop-price .tutor-btn,
.tutor-course-loop-price a {
    display: block;
    width: 100%;
    text-align: center;
    padding: 12px;
    background: var(--surface-base);
    color: var(--text-primary);
    border-radius: var(--radius-xs);
    font-size: var(--fs-4xl);
    font-weight: 700;
    font-family: var(--font);
    margin-bottom: 14px;
    transition: background var(--dur);
}

.tutor-course-loop-price .tutor-btn:hover,
.tutor-course-loop-price a:hover {
    background: #1a1a1a;
}

/* FAQ */
.sc-faq-list {
    max-width: 650px;
    margin: 0 auto;
}

.sc-faq-item {
    border-bottom: 1px solid rgba(0, 0, 0, .08);
}

.sc-faq-btn {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    background: none;
    border: 1px solid rgba(0, 0, 0, .08);
    font-family: var(--font);
    font-size: 18px;
    font-weight: 500;
    color: var(--text-dark);
    text-align: left;
    cursor: pointer;
    gap: 12px;
    transition: color var(--dur);
    margin-bottom: 5px;
}

.sc-faq-btn:hover {
    color: var(--surface-navy);
}

.sc-faq-btn svg {
    flex-shrink: 0;
    transition: transform var(--dur);
}

.sc-faq-item.open .sc-faq-btn svg {
    transform: rotate(180deg);
}

.sc-faq-answer {
    font-size: 16px;
    color: var(--text-muted);
    line-height: 1.7;
    max-height: 0;
    overflow: hidden;
    transition: max-height .28s ease, padding-bottom .2s ease;
    background: #e6fdff;
    font-weight: 500;
}

.sc-faq-item.open .sc-faq-answer {
    max-height: 400px;
    padding: 24px;
}

/* FINAL CTA */
.sc-cta {
    background: var(--surface-navy);
    padding: 64px 0;
    text-align: center;
    color: var(--text-primary);
}

.sc-cta h2 {
    font-size: clamp(1.5rem, 2.6vw, 2rem);
    font-weight: 800;
    margin-bottom: 10px;
    line-height: 1.2;
}

.sc-cta p {
    font-size: var(--fs-4xl);
    opacity: .6;
    max-width: 460px;
    margin: 0 auto 26px;
    line-height: 1.6;
}

/* Responsive */
@media (max-width: 1200px) {
    .sc-container {
        padding-left: 40px;
        padding-right: 40px;
    }
}

@media (max-width: 960px) {
    .sc-container {
        padding-left: 32px;
        padding-right: 32px;
    }

    .sc-hero-inner {
        grid-template-columns: 1fr;
    }

    .sc-hero-img {
        display: none;
    }

    .sc-two-col {
        grid-template-columns: 1fr;
    }

    .sc-sidebar {
        position: static;
    }

    .sc-features-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 600px) {
    .sc-container {
        padding-left: 20px;
        padding-right: 20px;
    }

    .sc-learn-grid {
        grid-template-columns: 1fr;
    }

    .sc-features-grid {
        grid-template-columns: 1fr;
    }
}