:root {
    --bg: #f9f1f0;
    --surface: #ffffff;
    --text: #1a1414;
    --muted: #7a6f72;
    --border: rgba(26, 20, 20, 0.08);
    --accent-start: #ff6b6b;
    --accent-end: #ff1f43;
    --accent-solid: #ff3b30;
    --card-shadow: 0 24px 60px rgba(26, 20, 20, 0.12);
    --transition: 0.25s ease;
    --radius-large: 28px;
    --radius-medium: 20px;
}

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

body {
    font-family: "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.hero {
    padding: 32px 5vw 120px;
}

.top-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 32px;
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid rgba(255, 59, 48, 0.14);
    border-radius: 999px;
    backdrop-filter: blur(18px);
    box-shadow: 0 18px 42px rgba(255, 59, 48, 0.12);
    margin-bottom: 72px;
}

.top-nav__brand {
    font-size: 1.18rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--text);
    text-decoration: none;
}

.top-nav__links {
    list-style: none;
    display: flex;
    gap: 26px;
    align-items: center;
}

.top-nav__links a {
    text-decoration: none;
    color: rgba(26, 20, 20, 0.68);
    font-size: 0.96rem;
    transition: color var(--transition);
}

.top-nav__links a:hover,
.top-nav__links a:focus-visible {
    color: var(--accent-solid);
}

.top-nav__actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.top-nav__link {
    text-decoration: none;
    color: rgba(26, 20, 20, 0.72);
    font-weight: 500;
    transition: color var(--transition);
}

.top-nav__link:hover,
.top-nav__link:focus-visible {
    color: var(--accent-solid);
}

.top-nav__cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 22px;
    border-radius: 999px;
    background: linear-gradient(115deg, var(--accent-start), var(--accent-end));
    color: #fff;
    font-weight: 600;
    text-decoration: none;
    box-shadow: 0 16px 32px rgba(255, 31, 67, 0.28);
    transition: transform var(--transition), box-shadow var(--transition);
}

.top-nav__cta:hover,
.top-nav__cta:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 24px 44px rgba(255, 31, 67, 0.32);
}

.hero__layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 64px;
    align-items: center;
}

.hero__content {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.hero__eyebrow {
    display: inline-flex;
    border-radius: 999px;
    padding: 6px 16px;
    background: rgba(255, 59, 48, 0.1);
    color: var(--accent-solid);
    font-weight: 600;
    font-size: 0.86rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    width: fit-content;
}

.hero h1 {
    font-size: clamp(2.8rem, 5vw, 4rem);
    line-height: 1.1;
    letter-spacing: -0.02em;
    font-weight: 700;
}

.hero__description {
    font-size: 1.08rem;
    color: rgba(26, 20, 20, 0.74);
    max-width: 520px;
}

.hero__cta-group {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: 999px;
    font-weight: 600;
    text-decoration: none;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
    cursor: pointer;
    border: none;
}

.btn--primary {
    background: linear-gradient(110deg, var(--accent-start), var(--accent-end));
    color: #fff;
    box-shadow: 0 20px 40px rgba(255, 31, 67, 0.3);
}

.btn--primary:hover,
.btn--primary:focus-visible {
    transform: translateY(-3px);
    box-shadow: 0 28px 52px rgba(255, 31, 67, 0.36);
}

.btn--ghost {
    background: transparent;
    color: var(--text);
    border: 1px solid rgba(255, 59, 48, 0.28);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
    transform: translateY(-2px);
    border-color: rgba(255, 31, 67, 0.48);
    box-shadow: 0 20px 36px rgba(255, 31, 67, 0.16);
}

.hero__highlights {
    list-style: none;
    display: grid;
    gap: 10px;
    color: rgba(26, 20, 20, 0.65);
    font-size: 0.98rem;
    margin-top: 8px;
}

.hero__highlights li::before {
    content: "•";
    color: var(--accent-end);
    margin-right: 10px;
}

.hero__media {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 360px;
}

.hero-media__gradient {
    position: absolute;
    width: 80%;
    max-width: 420px;
    aspect-ratio: 1;
    background: radial-gradient(circle at 30% 30%, rgba(255, 107, 107, 0.38), transparent 60%),
        radial-gradient(circle at 70% 70%, rgba(255, 31, 67, 0.42), transparent 55%);
    filter: blur(14px);
    border-radius: 50%;
    z-index: 0;
}

.hero-media__card {
    position: relative;
    width: min(420px, 100%);
    background: var(--surface);
    border-radius: var(--radius-large);
    padding: 32px;
    box-shadow: var(--card-shadow);
    display: flex;
    flex-direction: column;
    gap: 16px;
    border: 1px solid rgba(255, 31, 67, 0.12);
    z-index: 1;
}

.hero-media__label {
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(26, 20, 20, 0.52);
}

.hero-media__card h3 {
    font-size: 1.5rem;
    font-weight: 700;
}

.hero-media__card p {
    color: var(--muted);
}

.hero-media__image {
    width: 100%;
    border-radius: var(--radius-medium);
    border: 1px solid rgba(255, 59, 48, 0.22);
    height: 220px;
    object-fit: cover;
    box-shadow: 0 18px 42px rgba(255, 107, 107, 0.18);
}

.section {
    padding: 100px 5vw;
}

.section__header {
    max-width: 720px;
    margin: 0 auto 52px;
    text-align: center;
}

.section__header h2 {
    font-size: clamp(2rem, 3.2vw, 2.6rem);
    letter-spacing: -0.01em;
    margin-bottom: 12px;
}

.section__header p {
    color: var(--muted);
}

.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 28px;
}

.course-card {
    background: var(--surface);
    border-radius: var(--radius-medium);
    border: 1px solid var(--border);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.course-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 30px 64px rgba(26, 20, 20, 0.16);
    border-color: rgba(255, 31, 67, 0.26);
}

.course-card__image {
    width: 100%;
    height: 162px;
    object-fit: cover;
}

.course-card__body {
    padding: 26px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.course-card__tag {
    display: inline-flex;
    align-items: center;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(255, 31, 67, 0.1);
    color: var(--accent-solid);
    font-weight: 600;
    font-size: 0.82rem;
}

.course-card__title {
    font-size: 1.18rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.course-card__meta {
    color: var(--muted);
    font-size: 0.92rem;
}

.footer {
    padding: 48px 24px 60px;
    text-align: center;
    color: var(--muted);
    font-size: 0.92rem;
}

.modal {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(20px);
    z-index: 999;
}

.modal.is-open {
    display: flex;
}

.modal__overlay {
    position: absolute;
    inset: 0;
    background: rgba(26, 20, 20, 0.52);
}

.modal__content {
    position: relative;
    background: rgba(255, 255, 255, 0.96);
    border-radius: var(--radius-large);
    box-shadow: 0 40px 80px rgba(26, 20, 20, 0.22);
    width: min(960px, 94vw);
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid rgba(255, 228, 225, 0.9);
}

.modal__close {
    position: absolute;
    top: 18px;
    right: 18px;
    background: rgba(255, 228, 225, 0.92);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.4rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition), transform var(--transition);
}

.modal__close:hover {
    background: rgba(255, 214, 210, 1);
    transform: scale(1.05);
}

.modal__body {
    padding: 44px;
    overflow-y: auto;
}

.modal__info h3 {
    font-size: 1.8rem;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.modal__info p {
    color: rgba(99, 99, 102, 0.88);
    margin-bottom: 28px;
    max-width: 720px;
}

.modal__video {
    width: 100%;
    border-radius: var(--radius-medium);
    height: 420px;
    background: #000;
    box-shadow: 0 24px 48px rgba(255, 31, 67, 0.28);
    border: 1px solid rgba(255, 31, 67, 0.24);
}

@media (max-width: 960px) {
    .top-nav {
        gap: 18px;
        padding: 16px 20px;
    }

    .top-nav__links {
        display: none;
    }
}

@media (max-width: 640px) {
    .hero {
        padding: 24px 20px 100px;
    }

    .hero__layout {
        gap: 48px;
    }

    .hero-media__card {
        padding: 26px;
    }

    .course-card__body {
        padding: 22px;
    }

    .modal__body {
        padding: 28px;
    }

    .modal__video {
        height: 260px;
    }
}