:root {
    --font-sans: 'Instrument Sans', ui-sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --color-text: #1f2937;
    --color-muted: #6b7280;
    --color-bg: #f1f5f9;
    --color-white: #ffffff;
    --color-border: #e2e8f0;
    --color-primary: #0f172a;
    --color-primary-hover: #1e293b;
    --shadow-soft: 0 24px 48px rgba(15, 23, 42, 0.1);
}

body.front-body {
    margin: 0;
    min-height: 100vh;
    background: var(--color-bg);
    font-family: var(--font-sans);
    color: var(--color-text);
    display: flex;
    flex-direction: column;
}

a {
    color: inherit;
}

a:hover {
    color: var(--color-primary-hover);
}

.site-header {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.05);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    gap: 24px;
}

.brand-title {
    font-size: 20px;
    font-weight: 600;
    text-decoration: none;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
    font-size: 14px;
    color: var(--color-muted);
}

.nav-links a {
    text-decoration: none;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: var(--color-primary);
}

.container {
    width: min(1120px, 92%);
    margin: 0 auto;
}

.hero {
    margin: 48px auto 0;
    padding: 48px;
    border-radius: 24px;
    background: var(--color-white);
    box-shadow: var(--shadow-soft);
}

.hero-home {
    display: flex;
    flex-direction: column;
    gap: 32px;
    align-items: stretch;
}

@media (min-width: 960px) {
    .hero-home {
        flex-direction: row;
    }

    .hero-content {
        flex: 1 1 60%;
    }

    .hero-aside {
        flex: 1 1 40%;
    }
}

.hero-content {
    display: flex;
    flex-direction: column;
}

.hero-aside {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.hero-card {
    border-radius: 20px;
    background: rgba(15, 23, 42, 0.05);
    padding: 22px 24px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.hero-card h3 {
    margin: 0 0 12px;
    font-size: 15px;
    font-weight: 600;
    color: var(--color-primary);
}

.hero-card-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 8px;
    color: var(--color-muted);
    font-size: 14px;
}

.hero-card-stats {
    margin: 0;
    display: grid;
    gap: 12px;
}

.hero-card-stats div {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.hero-card-stats dt {
    font-size: 12px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.hero-card-stats dd {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--color-primary);
    word-break: break-word;
}

.hero-kicker {
    font-size: 12px;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.hero-title {
    margin-top: 16px;
    font-size: clamp(28px, 4vw, 36px);
    font-weight: 700;
}

.hero-description {
    margin-top: 16px;
    line-height: 1.7;
    color: var(--color-muted);
}

.hero-actions {
    margin-top: 32px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn-primary:hover {
    background: var(--color-primary-hover);
}

.btn-secondary {
    border: 1px solid var(--color-border);
    color: var(--color-primary);
    background: transparent;
}

.btn-secondary:hover {
    border-color: var(--color-primary);
}

.hero-links {
    margin-top: 28px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.hero-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 18px;
    border-radius: 14px;
    border: 1px solid rgba(15, 23, 42, 0.1);
    font-size: 14px;
    color: var(--color-primary);
    text-decoration: none;
    background: rgba(255, 255, 255, 0.7);
    transition: background 0.2s ease, border-color 0.2s ease;
}

.hero-link:hover {
    background: var(--color-white);
    border-color: var(--color-primary);
}

.hero-highlights {
    margin: 24px 0 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.hero-highlights li {
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.06);
    font-size: 13px;
    color: var(--color-primary);
}

.hero-meta {
    margin-top: 32px;
    display: grid;
    gap: 12px;
}

@media (min-width: 640px) {
    .hero-meta {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.hero-meta-item {
    display: flex;
    flex-direction: column;
    padding: 12px 16px;
    border-radius: 16px;
    background: rgba(15, 23, 42, 0.04);
}

.hero-meta-item .label {
    font-size: 12px;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.hero-meta-item .value {
    margin-top: 6px;
    font-weight: 600;
    color: var(--color-primary);
}

.section-head {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 24px;
}

.section-title {
    margin: 0;
    font-size: 22px;
    font-weight: 700;
    color: var(--color-primary);
}

.section-desc {
    margin: 0;
    color: var(--color-muted);
    font-size: 14px;
}

.article-section {
    margin-top: 64px;
}

.article-grid {
    display: grid;
    gap: 24px;
}

@media (min-width: 768px) {
    .article-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 1024px) {
    .article-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.article-card {
    background: var(--color-white);
    border-radius: 20px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    box-shadow: 0 16px 32px rgba(15, 23, 42, 0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 24px 48px rgba(15, 23, 42, 0.12);
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--color-muted);
}

.article-keyword {
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.06);
}

.article-title {
    margin: 0;
    font-size: 18px;
}

.article-excerpt {
    margin: 0;
    color: var(--color-muted);
    line-height: 1.7;
}

.article-tags {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.article-tags a {
    display: inline-flex;
    align-items: center;
    background: rgba(15, 23, 42, 0.08);
    color: var(--color-primary);
    border-radius: 999px;
    padding: 4px 12px;
    font-size: 12px;
    text-decoration: none;
    transition: background 0.2s ease, color 0.2s ease;
}

.article-tags a:hover {
    background: rgba(15, 23, 42, 0.12);
    color: var(--color-primary-hover);
}

.article-layout {
    background: var(--color-white);
    border-radius: 24px;
    padding: 36px;
    box-shadow: var(--shadow-soft);
    margin-top: 48px;
}

.article-header {
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 24px;
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.article-breadcrumb {
    display: flex;
    gap: 8px;
    font-size: 12px;
    color: var(--color-muted);
}

.article-breadcrumb a {
    color: var(--color-muted);
    text-decoration: none;
}

.article-breadcrumb a:hover {
    color: var(--color-primary-hover);
}

.article-body {
    color: var(--color-text);
    line-height: 1.8;
}

.article-body h2,
.article-body h3,
.article-body h4 {
    color: var(--color-primary);
    margin-top: 32px;
}

.article-body p {
    margin: 16px 0;
}

.article-tags-list {
    margin-top: 48px;
}

.faq-section {
    margin-top: 48px;
    border-top: 1px solid var(--color-border);
    padding-top: 32px;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    border: 1px solid var(--color-border);
    border-radius: 16px;
    overflow: hidden;
    background: var(--color-white);
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: 16px 20px;
    background: transparent;
    border: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
}

.faq-icon {
    font-size: 18px;
    color: var(--color-muted);
}

.faq-answer {
    padding: 16px 20px;
    border-top: 1px solid var(--color-border);
    color: var(--color-muted);
    font-size: 14px;
}

.related-section {
    margin-top: 48px;
    background: var(--color-white);
    border-radius: 20px;
    padding: 24px;
    box-shadow: var(--shadow-soft);
}

.related-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 12px;
}

.related-list a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-decoration: none;
    padding: 12px 16px;
    border-radius: 12px;
    background: rgba(15, 23, 42, 0.04);
    color: var(--color-primary);
}

.related-list a:hover {
    background: rgba(15, 23, 42, 0.08);
}

.related-title {
    font-weight: 600;
}

.related-date {
    font-size: 12px;
    color: var(--color-muted);
}

.info-grid {
    margin-top: 64px;
    display: grid;
    gap: 24px;
}

@media (min-width: 768px) {
    .info-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.info-card {
    padding: 24px;
    border-radius: 20px;
    background: var(--color-white);
    box-shadow: 0 16px 32px rgba(15, 23, 42, 0.08);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.info-card h3 {
    margin: 0;
}

.info-desc {
    margin: 0;
    color: var(--color-muted);
}

.pill-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.pill,
.pill-link {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 13px;
    background: rgba(15, 23, 42, 0.07);
    color: var(--color-primary);
    font-weight: 500;
    text-decoration: none;
    transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.pill-link:hover {
    background: rgba(15, 23, 42, 0.12);
    color: var(--color-primary-hover);
    text-decoration: none;
}

.pill-primary {
    background: rgba(14, 116, 144, 0.15);
    color: #0f172a;
}

.pill-empty {
    color: var(--color-muted);
    font-size: 13px;
}

.seo-metrics {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 10px;
}

.seo-metrics li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    border-radius: 12px;
    background: rgba(15, 23, 42, 0.05);
}

.metric-label {
    font-size: 12px;
    color: var(--color-muted);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.metric-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
}

.quick-pages {
    margin-top: 56px;
}

.quick-page-list {
    display: grid;
    gap: 16px;
}

@media (min-width: 768px) {
    .quick-page-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.quick-page-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 24px;
    border-radius: 18px;
    background: var(--color-white);
    text-decoration: none;
    color: var(--color-primary);
    box-shadow: 0 18px 32px rgba(15, 23, 42, 0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.quick-page-link:hover {
    transform: translateY(-4px);
    box-shadow: 0 26px 40px rgba(15, 23, 42, 0.12);
}

.quick-page-link .arrow {
    font-size: 18px;
    color: var(--color-muted);
}

.quick-page-nav {
    margin-top: 24px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.quick-page-pill {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border-radius: 999px;
    border: 1px solid rgba(15, 23, 42, 0.15);
    background: rgba(255, 255, 255, 0.8);
    color: var(--color-primary);
    text-decoration: none;
    font-size: 13px;
    transition: background 0.2s ease, border-color 0.2s ease;
}

.quick-page-pill:hover {
    background: var(--color-white);
    border-color: var(--color-primary);
}

.quick-page-pill.is-active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.static-page .static-layout {
    margin-top: 32px;
}

.spotlight-section {
    margin-top: 56px;
}

.spotlight-card {
    border-radius: 24px;
    background: var(--color-white);
    padding: 32px;
    box-shadow: var(--shadow-soft);
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.spotlight-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    color: var(--color-muted);
}

.spotlight-keyword {
    padding: 4px 12px;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.08);
    color: var(--color-primary);
}

.spotlight-title {
    margin: 0;
    font-size: 22px;
    font-weight: 700;
}

.spotlight-title a {
    text-decoration: none;
    color: inherit;
}

.spotlight-excerpt {
    margin: 0;
    color: var(--color-muted);
    line-height: 1.8;
}

.spotlight-cta {
    align-self: flex-start;
    padding: 10px 20px;
    border-radius: 14px;
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    transition: background 0.2s ease, color 0.2s ease;
}

.spotlight-cta:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.taxonomy-section {
    margin-top: 64px;
    display: grid;
    gap: 24px;
}

@media (min-width: 900px) {
    .taxonomy-section {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.taxonomy-card {
    border-radius: 22px;
    background: var(--color-white);
    padding: 28px;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.taxonomy-card h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
}

.taxonomy-desc {
    margin: 0;
    color: var(--color-muted);
    font-size: 14px;
}

.taxonomy-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 12px;
}

.taxonomy-list a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    border-radius: 14px;
    background: rgba(15, 23, 42, 0.05);
    text-decoration: none;
    color: var(--color-primary);
    transition: background 0.2s ease;
}

.taxonomy-list a:hover {
    background: rgba(15, 23, 42, 0.1);
}

.taxonomy-name {
    font-weight: 600;
}

.taxonomy-note {
    font-size: 12px;
    color: var(--color-muted);
}

.taxonomy-empty {
    color: var(--color-muted);
    font-size: 14px;
}

.tag-cloud {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag-cloud a {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.08);
    color: var(--color-primary);
    text-decoration: none;
    font-size: 13px;
}

.tag-cloud a:hover {
    background: rgba(15, 23, 42, 0.14);
}

.hero-compact {
    padding: 32px;
    margin-top: 32px;
}

.hero-compact .hero-meta {
    margin-top: 24px;
}

.category-page .article-grid,
.tag-page .article-grid {
    margin-top: 32px;
}

.empty-hint {
    color: var(--color-muted);
    font-size: 14px;
    text-align: center;
    padding: 24px 0;
}

.pagination {
    margin-top: 24px;
    display: flex;
    justify-content: center;
}

.search-page .search-form {
    margin-top: 24px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.search-form input[type="search"] {
    flex: 1;
    min-width: 220px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 14px;
    transition: border-color 0.2s ease;
}

.search-form input[type="search"]:focus {
    border-color: var(--color-primary);
    outline: none;
}

.faq-page .faq-list {
    margin-top: 32px;
}

.site-footer {
    margin-top: auto;
    padding: 24px 0;
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
}

.footer-inner {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
    font-size: 13px;
    color: var(--color-muted);
}

@media (min-width: 640px) {
    .footer-inner {
        flex-direction: row;
        justify-content: space-between;
    }
}

.footer-links {
    display: flex;
    gap: 16px;
}

.footer-links a {
    color: var(--color-muted);
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--color-primary);
}