/* Avant Insider Form 4 field guide. All selectors stay Learn-page scoped. */

.learn-page {
    --learn-ink: #102c3c;
    --learn-paper: #fbfaf6;
    --learn-rule: #cfd3cd;
    width: 100%;
    max-width: var(--container-wide);
    margin: 0 auto;
}

.learn-page .learn-eyebrow {
    margin: 0 0 var(--space-3);
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.11em;
    line-height: 1.4;
}

.learn-page .learn-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(18rem, 0.6fr);
    border-top: 3px solid var(--learn-ink);
    border-bottom: 1px solid var(--learn-rule);
    background: var(--learn-paper);
}

.learn-page .learn-hero__copy {
    min-width: 0;
    padding: clamp(3.5rem, 7vw, 6.5rem) clamp(2rem, 6vw, 6rem) clamp(3rem, 6vw, 5rem) 0;
}

.learn-page .learn-hero h1 {
    max-width: 10ch;
    margin: 0;
    color: var(--learn-ink);
    font-size: clamp(3.1rem, 6.5vw, 5.8rem);
    font-weight: 600;
    letter-spacing: -0.055em;
    line-height: 0.93;
}

.learn-page .learn-hero__lead {
    max-width: 42rem;
    margin: var(--space-6) 0 0;
    color: #344d58;
    font-size: clamp(1.08rem, 1.8vw, 1.3rem);
    line-height: 1.55;
}

.learn-page .learn-actions {
    margin-top: var(--space-6);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.learn-page .learn-actions .btn {
    min-height: 3rem;
    padding-right: 1.35rem;
    padding-left: 1.35rem;
}

.learn-page .learn-hero__index {
    min-width: 0;
    padding: clamp(2.5rem, 5vw, 4.5rem) clamp(1.5rem, 4vw, 3.5rem);
    align-self: stretch;
    background: var(--learn-ink);
    color: #eef3f1;
}

.learn-page .learn-hero__index-label {
    margin: 0 0 var(--space-5);
    color: #9ed3c2;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.11em;
}

.learn-page .learn-hero__index ol {
    margin: 0;
    padding: 0;
    list-style: none;
}

.learn-page .learn-hero__index li {
    border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.learn-page .learn-hero__index li:last-child {
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.learn-page .learn-hero__index a {
    padding: var(--space-4) 0;
    display: grid;
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: var(--space-3);
    color: #eef3f1;
    font-weight: 600;
    text-decoration: none;
}

.learn-page .learn-hero__index a:hover {
    color: #ffffff;
}

.learn-page .learn-hero__index a span {
    color: #9ed3c2;
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.learn-page .learn-section {
    display: grid;
    grid-template-columns: minmax(5rem, 0.22fr) minmax(0, 0.78fr);
    gap: clamp(2rem, 5vw, 5.5rem);
    padding: clamp(3.5rem, 7vw, 6rem) 0;
    border-bottom: 1px solid var(--learn-rule);
}

.learn-page .learn-section--last {
    border-bottom: 0;
}

.learn-page .learn-section__marker {
    padding-top: 0.2rem;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    letter-spacing: 0.08em;
}

.learn-page .learn-section__body {
    min-width: 0;
    max-width: 62rem;
}

.learn-page .learn-section h2 {
    max-width: 22ch;
    margin: 0;
    color: var(--learn-ink);
    font-size: clamp(2rem, 4vw, 3.4rem);
    letter-spacing: -0.035em;
    line-height: 1.03;
}

.learn-page .learn-section__intro {
    max-width: 48rem;
    margin: var(--space-5) 0 0;
    color: #344d58;
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
}

.learn-page .learn-facts,
.learn-page .learn-codes {
    margin: var(--space-7) 0 0;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-top: 1px solid var(--learn-rule);
    border-left: 1px solid var(--learn-rule);
}

.learn-page .learn-facts > div,
.learn-page .learn-codes > div {
    min-width: 0;
    padding: var(--space-5);
    border-right: 1px solid var(--learn-rule);
    border-bottom: 1px solid var(--learn-rule);
    background: var(--color-surface);
}

.learn-page .learn-facts dt,
.learn-page .learn-codes dt {
    margin: 0 0 var(--space-2);
    color: var(--learn-ink);
    font-weight: 700;
}

.learn-page .learn-facts dd,
.learn-page .learn-codes dd {
    margin: 0;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.learn-page .learn-codes dt {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.learn-page .learn-codes dt span {
    width: 2.4rem;
    height: 2.4rem;
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border-strong);
    background: var(--learn-paper);
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: var(--font-size-lg);
}

.learn-page .learn-note {
    max-width: 48rem;
    margin: var(--space-5) 0 0;
    padding-left: var(--space-4);
    border-left: 3px solid var(--color-accent);
    color: var(--color-text-muted);
}

.learn-page .learn-method {
    margin: var(--space-7) 0 0;
    padding: 0;
    border-top: 1px solid var(--learn-rule);
    list-style: none;
}

.learn-page .learn-method li {
    padding: var(--space-4) 0;
    display: grid;
    grid-template-columns: 3rem minmax(0, 1fr);
    gap: var(--space-4);
    border-bottom: 1px solid var(--learn-rule);
}

.learn-page .learn-method li > span {
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.08em;
}

.learn-page .learn-method p {
    margin: 0;
    color: var(--color-text-muted);
}

.learn-page .learn-method strong {
    color: var(--learn-ink);
}

.learn-page .learn-methodology-link {
    margin-top: var(--space-6);
    padding: var(--space-5);
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--space-5);
    align-items: center;
    border: var(--border-standard);
    border-left: 4px solid var(--color-accent);
    background: var(--color-surface);
}

.learn-page .learn-methodology-link h3 {
    margin: 0 0 var(--space-1);
    color: var(--learn-ink);
}

.learn-page .learn-methodology-link p {
    margin: 0;
    color: var(--color-text-muted);
}

.learn-page .learn-text-link {
    display: inline-flex;
    min-height: 2.75rem;
    align-items: center;
    color: var(--color-accent);
    font-weight: 700;
    text-underline-offset: 0.25em;
}

.learn-page .learn-text-link::after {
    content: "→";
    margin-left: var(--space-2);
    font-family: var(--font-mono);
}

.learn-page .learn-data-panel {
    margin-top: var(--space-7);
    padding: clamp(1.5rem, 4vw, 3rem);
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--space-6);
    align-items: center;
    background: var(--learn-ink);
    color: #e9f0ef;
}

.learn-page .learn-data-panel__label {
    margin: 0 0 var(--space-3);
    color: #9ed3c2;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
}

.learn-page .learn-data-panel h3 {
    max-width: 30ch;
    margin: 0;
    color: #ffffff;
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    letter-spacing: -0.02em;
}

.learn-page .learn-data-panel p:last-child {
    max-width: 43rem;
    margin: var(--space-3) 0 0;
    color: #b9c8c7;
}

.learn-page .learn-data-panel .btn {
    min-width: 9rem;
}

.learn-page .learn-products {
    margin-top: var(--space-7);
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid var(--learn-rule);
    border-left: 1px solid var(--learn-rule);
}

.learn-page .learn-products article {
    min-width: 0;
    padding: var(--space-5);
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--learn-rule);
    border-bottom: 1px solid var(--learn-rule);
    background: var(--color-surface);
}

.learn-page .learn-products__type {
    margin: 0 0 var(--space-4);
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-size: 0.66rem;
    font-weight: 600;
    letter-spacing: 0.08em;
}

.learn-page .learn-products h3 {
    margin: 0;
    color: var(--learn-ink);
    font-size: var(--font-size-2xl);
}

.learn-page .learn-products article > p:not(.learn-products__type) {
    margin: var(--space-3) 0 var(--space-5);
    color: var(--color-text-muted);
}

.learn-page .learn-products .learn-text-link {
    margin-top: auto;
    align-self: flex-start;
}

@media (max-width: 62rem) {
    .learn-page .learn-hero {
        grid-template-columns: minmax(0, 1.15fr) minmax(16rem, 0.85fr);
    }

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

@media (max-width: 48rem) {
    .learn-page .learn-hero,
    .learn-page .learn-section {
        grid-template-columns: 1fr;
    }

    .learn-page .learn-hero__copy {
        padding: var(--space-7) 0;
    }

    .learn-page .learn-hero__index {
        padding: var(--space-6);
    }

    .learn-page .learn-section {
        gap: var(--space-3);
    }

    .learn-page .learn-facts,
    .learn-page .learn-codes {
        grid-template-columns: 1fr;
    }

    .learn-page .learn-methodology-link,
    .learn-page .learn-data-panel {
        grid-template-columns: 1fr;
    }

    .learn-page .learn-methodology-link .learn-text-link,
    .learn-page .learn-data-panel .btn {
        justify-self: start;
    }
}

@media (max-width: 26.25rem) {
    .learn-page .learn-hero h1 {
        font-size: clamp(2.65rem, 14vw, 3.6rem);
    }

    .learn-page .learn-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .learn-page .learn-actions .btn,
    .learn-page .learn-data-panel .btn {
        width: 100%;
    }

    .learn-page .learn-method li {
        grid-template-columns: 2rem minmax(0, 1fr);
        gap: var(--space-3);
    }

    .learn-page .learn-facts > div,
    .learn-page .learn-codes > div,
    .learn-page .learn-products article,
    .learn-page .learn-methodology-link,
    .learn-page .learn-data-panel {
        padding: var(--space-4);
    }
}