.learn-shell {
    width: min(1120px, calc(100% - 2rem));
    margin: 0 auto;
    padding: 2rem 0 4rem;
}

.learn-hero {
    position: relative;
    overflow: hidden;
    margin: 1.5rem 0 2rem;
    padding: clamp(2rem, 6vw, 4.5rem);
    border: 1px solid rgba(255, 217, 61, 0.22);
    border-radius: 28px;
    background:
        radial-gradient(circle at 14% 20%, rgba(77, 150, 255, 0.28), transparent 28%),
        radial-gradient(circle at 88% 10%, rgba(255, 217, 61, 0.16), transparent 22%),
        linear-gradient(135deg, rgba(17, 25, 58, 0.96), rgba(39, 22, 74, 0.92));
    box-shadow: 0 26px 90px rgba(0, 0, 0, 0.32);
}

.learn-kicker {
    color: #4d96ff;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.learn-hero h1,
.learn-article h1 {
    max-width: 820px;
    margin: 0.8rem 0;
    color: #ffd93d;
    font-size: clamp(2.25rem, 7vw, 4.75rem);
    line-height: 0.98;
}

.learn-hero p,
.learn-lead {
    max-width: 760px;
    color: #c8d2e6;
    font-size: clamp(1rem, 2.2vw, 1.16rem);
    line-height: 1.75;
}

.learn-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-top: 1.4rem;
}

.learn-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0.75rem 1.1rem;
    border: 1px solid rgba(255, 217, 61, 0.35);
    border-radius: 999px;
    color: #091423;
    background: linear-gradient(135deg, #ffd93d, #ffb84d);
    font-weight: 900;
    text-decoration: none;
}

.learn-button.secondary {
    color: #e8efff;
    background: rgba(255, 255, 255, 0.07);
}

.learn-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0 2.5rem;
}

.learn-card {
    min-height: 250px;
    padding: 1.45rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 22px;
    color: #edf3ff;
    background: linear-gradient(145deg, rgba(21, 25, 61, 0.94), rgba(44, 24, 77, 0.9));
    box-shadow: 0 22px 60px rgba(0, 0, 0, 0.22);
    text-decoration: none;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.learn-card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 217, 61, 0.55);
}

.learn-card span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    margin-bottom: 1rem;
    border-radius: 16px;
    color: #091423;
    background: linear-gradient(135deg, #4d96ff, #ffd93d);
    font-weight: 900;
}

.learn-card h2,
.learn-card h3 {
    margin: 0 0 0.6rem;
    color: #ffd93d;
    font-size: 1.25rem;
}

.learn-card p,
.learn-section p,
.learn-section li,
.learn-article p,
.learn-article li {
    color: #c8d2e6;
    line-height: 1.75;
}

.learn-section {
    margin: 2rem 0;
    padding: clamp(1.25rem, 3vw, 2rem);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    background: rgba(12, 18, 44, 0.72);
}

.learn-section h2,
.learn-article h2 {
    margin: 0 0 0.8rem;
    color: #ffd93d;
    font-size: clamp(1.6rem, 4vw, 2.3rem);
}

.learn-section h3,
.learn-article h3 {
    margin: 1.6rem 0 0.55rem;
    color: #82b8ff;
}

.learn-article {
    width: min(920px, calc(100% - 2rem));
    margin: 0 auto;
    padding: 2rem 0 4rem;
}

.learn-article-header {
    margin: 1.4rem 0 2rem;
    padding: clamp(1.5rem, 4vw, 3rem);
    border: 1px solid rgba(255, 217, 61, 0.2);
    border-radius: 28px;
    background: linear-gradient(135deg, rgba(8, 12, 30, 0.96), rgba(35, 21, 70, 0.9));
}

.learn-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
    margin-top: 1.2rem;
}

.learn-meta span {
    padding: 0.32rem 0.7rem;
    border: 1px solid rgba(77, 150, 255, 0.3);
    border-radius: 999px;
    color: #b9d4ff;
    background: rgba(77, 150, 255, 0.1);
    font-size: 0.82rem;
    font-weight: 700;
}

.learn-toc {
    margin: 1.2rem 0 2rem;
    padding: 1.2rem;
    border: 1px solid rgba(255, 217, 61, 0.16);
    border-radius: 18px;
    background: rgba(255, 217, 61, 0.05);
}

.learn-toc a {
    display: inline-block;
    margin: 0.25rem 0.8rem 0.25rem 0;
    color: #ffd93d;
    text-decoration: none;
}

.learn-article pre {
    overflow: auto;
    margin: 1rem 0;
    padding: 1rem;
    border: 1px solid rgba(77, 150, 255, 0.22);
    border-radius: 18px;
    background: #070b1a;
    color: #e9f1ff;
    line-height: 1.55;
}

.learn-article code {
    font-family: Consolas, "Courier New", monospace;
}

.learn-article :not(pre) > code {
    padding: 0.12rem 0.32rem;
    border-radius: 6px;
    color: #ffd93d;
    background: rgba(255, 217, 61, 0.09);
}

.code-source {
    margin-top: -0.55rem;
    color: #98a8c8;
    font-size: 0.86rem;
}

.code-source a,
.learn-article a,
.learn-section a {
    color: #82b8ff;
}

.learn-callout {
    margin: 1.2rem 0;
    padding: 1rem 1.1rem;
    border-left: 4px solid #ffd93d;
    border-radius: 14px;
    background: rgba(255, 217, 61, 0.08);
}

.learn-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.learn-next {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.learn-next a {
    padding: 1rem;
    border: 1px solid rgba(255, 217, 61, 0.2);
    border-radius: 18px;
    color: #edf3ff;
    background: rgba(255, 255, 255, 0.06);
    text-decoration: none;
}

.learn-footer {
    width: min(920px, calc(100% - 2rem));
    margin: 0 auto 3rem;
    color: #98a8c8;
    text-align: center;
}

@media (max-width: 720px) {
    .learn-shell,
    .learn-article {
        width: min(100% - 1rem, 920px);
    }

    .learn-hero,
    .learn-article-header,
    .learn-section {
        border-radius: 18px;
    }

    .learn-card {
        min-height: auto;
    }
}