.app-shell-article {
    max-width: 880px;
}

.card-hero {
    padding: 40px 32px;
}

.hero-lead {
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}

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

.form-note {
    color: var(--text-muted);
    font-size: 0.82rem;
    text-align: center;
    margin-top: 4px;
}

.result-summary {
    padding: 24px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: linear-gradient(180deg, rgba(197, 160, 89, 0.14), rgba(197, 160, 89, 0.06));
}

.result-summary-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.result-summary-text {
    font-size: 1rem;
    line-height: 1.6;
}

.result-summary-note {
    margin-top: 10px;
    color: var(--text-muted);
    font-size: 0.92rem;
    line-height: 1.6;
}

.section-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.toc {
    padding-top: 28px;
    padding-bottom: 28px;
}

.toc-list {
    padding-left: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toc-list a {
    color: var(--text);
    text-decoration: none;
}

.toc-list a:hover {
    color: var(--accent);
}

.article-section {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.article-text {
    color: var(--text);
    line-height: 1.75;
}

.article-list {
    padding-left: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    color: var(--text);
    line-height: 1.7;
}

.formula-box {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 20px;
    border-radius: 12px;
    background-color: var(--bg);
    border: 1px solid var(--border-strong);
}

.formula-label {
    color: var(--text-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.formula-code {
    font-size: 1.05rem;
    color: var(--accent);
}

.table-wrap {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 640px;
}

.data-table th,
.data-table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    line-height: 1.6;
}

.data-table th {
    color: var(--text);
    font-weight: 600;
}

.data-table td {
    color: var(--text-muted);
}

.faq-section {
    gap: 12px;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: 12px;
    background-color: var(--bg);
    padding: 18px 20px;
}

.faq-item summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--text);
}

.faq-answer {
    margin-top: 12px;
    color: var(--text-muted);
    line-height: 1.7;
}

@media (max-width: 768px) {
    .app-shell-article {
        max-width: 560px;
    }

    .card-hero {
        padding: 28px 24px;
    }

    .section-title {
        font-size: 1.15rem;
    }
}