.featured-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr); gap: 1.4rem; }
.secondary-list { display: grid; align-content: start; gap: .2rem; padding: .4rem 0; }
.article-catalog-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; }
.article-catalog-grid-small { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.article-card { overflow: hidden; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); transition: transform .18s, box-shadow .18s, border-color .18s; }
.article-card:hover { border-color: #bed1c4; box-shadow: var(--shadow-md); transform: translateY(-3px); }
.article-card-media { display: block; overflow: hidden; background: var(--surface-soft); }
.article-card-media img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; transition: transform .3s; }
.article-card:hover .article-card-media img { transform: scale(1.025); }
.media-placeholder { position: relative; display: grid; place-items: center; aspect-ratio: 16 / 9; overflow: hidden; color: var(--accent); background: linear-gradient(135deg, #e4eee8 0%, #f7f1e5 100%); }
.media-placeholder::before, .media-placeholder::after { position: absolute; display: block; content: ""; border: 1px solid rgba(31, 107, 80, .15); border-radius: 50%; }
.media-placeholder::before { width: 72%; height: 150%; transform: rotate(-24deg); }
.media-placeholder::after { width: 42%; height: 95%; transform: rotate(32deg); }
.media-placeholder span { position: relative; z-index: 1; display: grid; gap: .3rem; justify-items: center; font: 700 .78rem/1 var(--font); letter-spacing: .18em; opacity: .68; }
.media-placeholder-large span { font-size: .9rem; }
.media-placeholder-large small { color: var(--muted); font: 600 .72rem/1.2 var(--font); letter-spacing: 0; }
.article-card-body { display: grid; gap: .55rem; padding: 1.15rem 1.2rem 1.25rem; }
.card-kicker { display: flex; align-items: center; flex-wrap: wrap; gap: .45rem .65rem; }
.content-type-label { display: inline-flex; align-items: center; width: fit-content; padding: .22rem .48rem; color: var(--accent-dark); background: var(--accent-soft); border-radius: 999px; font-size: .6rem; font-weight: 850; letter-spacing: .09em; line-height: 1.1; text-transform: uppercase; }
.content-type-tool { color: var(--cta-dark); background: #f5e5da; }
.content-type-category { color: #6a5731; background: #f5efe2; }
.article-card h3 { margin: 0; font-size: 1.13rem; letter-spacing: -.025em; line-height: 1.25; }
.article-card h3 a { color: var(--ink); }
.article-card h3 a:hover { color: var(--accent); }
.article-card p { display: -webkit-box; overflow: hidden; margin: 0; color: var(--muted); font-size: .88rem; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
.card-meta { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: .35rem; color: var(--muted); font-size: .74rem; font-weight: 650; }
.card-meta span::before { content: "·"; margin-right: .7rem; color: #a3b2a9; }
.article-card-featured { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(260px, .9fr); }
.article-card-featured .article-card-media img, .article-card-featured .media-placeholder { height: 100%; min-height: 310px; aspect-ratio: auto; }
.article-card-featured .article-card-body { align-content: center; padding: 2rem; }
.article-card-featured h3 { font-size: clamp(1.5rem, 2.5vw, 2.2rem); line-height: 1.1; }
.article-card-featured p { font-size: .98rem; }
.article-card-compact { display: grid; grid-template-columns: 92px 1fr; gap: .8rem; padding: .6rem 0; background: transparent; border: 0; border-bottom: 1px solid var(--line); border-radius: 0; box-shadow: none; }
.article-card-compact:last-child { border-bottom: 0; }
.article-card-compact:hover { transform: none; box-shadow: none; border-color: var(--line); }
.compact-media { overflow: hidden; align-self: start; border-radius: 8px; background: var(--surface-soft); }
.compact-media img, .compact-media .media-placeholder { width: 92px; height: 76px; aspect-ratio: auto; object-fit: cover; }
.article-card-compact .article-card-body { padding: 0; }
.article-card-compact h3 { font-size: .98rem; }
.article-card-compact time { color: var(--muted); font-size: .72rem; }

.calculator-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .9rem; }
.calculator-grid-large { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.calculator-card { display: flex; gap: .85rem; min-height: 160px; padding: 1.2rem; color: var(--ink); background: #f1f6f2; border: 1px solid #d7e4db; border-radius: var(--radius-md); transition: transform .18s, background .18s, box-shadow .18s, border-color .18s; }
.calculator-card:hover { color: var(--ink); background: #e4f0e8; border-color: #b9d3c2; box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.calculator-icon { display: grid; flex: 0 0 auto; place-items: center; width: 38px; height: 38px; color: var(--accent-dark); background: #d6e8db; border-radius: 9px; font: 700 1.4rem/1 var(--serif); }
.calculator-icon-large { width: 48px; height: 48px; font-size: 1.8rem; }
.calculator-card-body { display: grid; align-content: start; gap: .4rem; min-width: 0; }
.calculator-card strong { font-size: .98rem; line-height: 1.25; }
.calculator-card small { display: -webkit-box; overflow: hidden; color: var(--muted); font-size: .78rem; line-height: 1.45; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.calculator-theme { color: var(--muted); font-size: .68rem; font-weight: 750; letter-spacing: .06em; text-transform: uppercase; }
.card-link { margin-top: auto; color: var(--cta); font-size: .77rem; font-weight: 850; }
.calculator-grid-featured, .calculator-grid-catalog { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.calculator-catalog { gap: 2.45rem; }
.calculator-catalog-section { display: grid; gap: 1.15rem; }
.calculator-search { position: relative; display: flex; align-items: center; max-width: 680px; margin-top: 1.35rem; padding: .35rem .45rem .35rem 2.6rem; background: var(--surface); border: 1px solid var(--line); border-radius: 11px; box-shadow: var(--shadow-sm); }
.calculator-search:focus-within { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(31, 107, 80, .1); }
.calculator-search input { width: 100%; min-width: 0; height: 44px; padding: .6rem .5rem; color: var(--ink); background: transparent; border: 0; outline: 0; }
.calculator-search-icon { position: absolute; left: 1rem; color: var(--accent); font-size: 1.3rem; line-height: 1; }
.calculator-search-clear { flex: 0 0 auto; padding: .35rem .55rem; color: var(--muted); background: transparent; border: 0; border-radius: 6px; font-size: .72rem; font-weight: 750; cursor: pointer; }
.calculator-search-clear:hover { color: var(--accent-dark); background: var(--accent-soft); }
.calculator-search-status { min-height: 1.3em; margin: .55rem 0 0; color: var(--muted); font-size: .78rem; font-weight: 700; }
.catalog-section-note, .catalog-result-count { color: var(--muted); font-size: .78rem; font-weight: 700; }
.calculator-filter-bar { display: flex; align-items: center; flex-wrap: wrap; gap: .35rem; padding: .65rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-md); }
.calculator-filter-bar .filter-label { flex: 0 0 auto; margin-right: .3rem; }
.calculator-filter-bar .filter-chip { cursor: pointer; background: transparent; }
.calculator-filter-bar .filter-chip:hover, .calculator-filter-bar .filter-chip.is-active { color: var(--cta-dark); background: #f5e5da; border-color: #e8c8b5; }
.calculator-empty { margin-top: .1rem; }
.category-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .8rem; }
.category-grid-small { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: .75rem; }
.category-card { display: flex; align-items: start; gap: .7rem; min-height: 112px; padding: 1.1rem; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-md); transition: border-color .18s, box-shadow .18s, transform .18s; }
.category-card:hover { color: var(--ink); border-color: #b9d1c0; box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.category-mark { display: grid; flex: 0 0 auto; place-items: center; width: 30px; height: 30px; color: var(--accent); background: var(--accent-soft); border-radius: 8px; font-weight: 900; }
.category-card-body { display: grid; align-content: start; gap: .3rem; min-width: 0; }
.category-card strong, .category-card small { display: block; }
.category-card strong { font-size: .92rem; }
.category-card small { margin-top: .25rem; color: var(--muted); font-size: .76rem; line-height: 1.4; }

.category-hero { display: flex; align-items: center; gap: 1.35rem; padding: 1.7rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); }
.category-hero-mark { display: grid; flex: 0 0 auto; place-items: center; width: 68px; height: 68px; color: var(--accent); background: var(--accent-soft); border-radius: 15px; font-size: 2.2rem; }
.category-hero h1 { margin: .3rem 0 .45rem; font-size: clamp(2rem, 4vw, 3.35rem); letter-spacing: -.06em; line-height: 1; }
.category-hero p { max-width: 680px; margin: 0 0 .8rem; color: var(--muted); }
.category-results-heading { margin-top: 1rem; }
.result-count { color: var(--muted); font-size: .8rem; font-weight: 750; }

.tool-page-header { display: flex; align-items: end; justify-content: space-between; gap: 2rem; }
.calculator-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; align-items: start; gap: 1.4rem; }
.calculator-shell { padding: clamp(1.2rem, 3vw, 2rem); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.calculator-shell-head { display: flex; align-items: center; gap: .8rem; margin-bottom: 1.5rem; padding-bottom: 1.2rem; border-bottom: 1px solid var(--line); }
.calculator-shell-head h2 { margin: .25rem 0 0; font-size: 1.35rem; letter-spacing: -.03em; }
.tool-sidebar { display: grid; gap: 1rem; }
.sidebar-note { padding: 1.2rem; background: #f5efe2; border: 1px solid #eadbc0; border-radius: var(--radius-md); }
.sidebar-note h2 { margin: .4rem 0; font-size: 1.1rem; line-height: 1.2; }
.sidebar-note p { margin: 0; color: var(--muted); font-size: .82rem; }
.sidebar-back { padding: 1rem; color: var(--ink-soft); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-md); font-size: .82rem; font-weight: 800; }

.search-form-large { position: relative; max-width: 760px; padding: .35rem; background: var(--surface); border: 1px solid var(--line); border-radius: 11px; box-shadow: var(--shadow-sm); }
.search-form-large input { height: 52px; padding-left: 2.4rem; }
.search-field-icon { position: absolute; top: 50%; left: .9rem; color: var(--accent); font-size: 1.35rem; line-height: 1; transform: translateY(-50%); }
.search-summary { display: flex; align-items: baseline; gap: .7rem; padding-bottom: .8rem; border-bottom: 1px solid var(--line); }
.search-summary span, .search-summary small { color: var(--muted); font-size: .8rem; }
.search-summary strong { font-size: 1.15rem; }
.search-results { display: grid; gap: .8rem; max-width: 850px; }
.search-result { padding: 1.3rem 1.4rem; background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: var(--radius-md); }
.search-result.calculator { border-left-color: var(--warm); }
.result-type { color: var(--muted); font-size: .68rem; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.search-result h2 { margin: .3rem 0 .35rem; font-size: 1.25rem; line-height: 1.2; }
.search-result h2 a { color: var(--ink); }
.search-result p { margin: 0 0 .7rem; color: var(--muted); font-size: .88rem; }
.search-discovery { max-width: 700px; padding: 1.5rem; background: var(--surface-soft); border-radius: var(--radius-md); }
.search-discovery h2 { margin: .45rem 0 1rem; }
.suggested-links { display: flex; flex-wrap: wrap; gap: .55rem; }
.suggested-links a { padding: .55rem .8rem; color: var(--ink-soft); background: var(--surface); border: 1px solid var(--line); border-radius: 999px; font-size: .82rem; font-weight: 750; }

.article-layout { display: grid; grid-template-columns: minmax(0, var(--reading-width)) 250px; align-items: start; gap: clamp(2rem, 5vw, 5rem); justify-content: center; }
.article-header h1 { max-width: 850px; margin: .7rem 0 .8rem; font-size: clamp(2.4rem, 5vw, 4.45rem); letter-spacing: -.07em; line-height: 1.02; }
.article-lead { max-width: 700px; margin: 0; color: var(--ink-soft); font-size: 1.18rem; line-height: 1.55; }
.article-meta { display: flex; flex-wrap: wrap; gap: .85rem; margin-top: 1.15rem; color: var(--muted); font-size: .78rem; font-weight: 700; }
.article-meta span + span::before { content: "·"; margin-right: .85rem; color: #aab8af; }
.article-hero-media, .article-hero-placeholder { overflow: hidden; margin: 2rem 0 2.4rem; border-radius: var(--radius-lg); }
.article-hero-media img { width: 100%; max-height: 490px; object-fit: cover; }
.article-hero-placeholder { display: grid; place-items: center; min-height: 250px; color: rgba(31, 107, 80, .65); background: linear-gradient(135deg, #e2eee7, #f4ecd9); font: 500 clamp(2rem, 5vw, 4rem)/1 var(--serif); }
.article-content { max-width: var(--reading-width); color: #304039; font-size: 1.08rem; line-height: 1.82; }
.article-content > p { margin: 0 0 1.35rem; }
.article-content h2 { margin: 2.8rem 0 .9rem; color: var(--ink); font-size: clamp(1.55rem, 2.5vw, 2.15rem); letter-spacing: -.045em; line-height: 1.18; scroll-margin-top: 100px; }
.article-content h3 { margin: 2rem 0 .65rem; color: var(--ink); font-size: 1.35rem; letter-spacing: -.025em; line-height: 1.25; scroll-margin-top: 100px; }
.article-content a { text-decoration: underline; text-underline-offset: 3px; }
.content-figure { margin: 2rem 0; }
.content-figure img { width: 100%; border-radius: var(--radius-md); }
.content-figure figcaption { margin-top: .5rem; color: var(--muted); font-size: .8rem; text-align: center; }
.article-content ul, .article-content ol { margin: 1.2rem 0; padding-left: 1.4rem; }
.article-content li { padding-left: .25rem; margin: .35rem 0; }
.article-content blockquote { margin: 2rem 0; padding: 1.2rem 1.4rem; color: var(--ink-soft); background: var(--warm-soft); border-left: 4px solid var(--warm); font-family: var(--serif); font-size: 1.25rem; line-height: 1.55; }
.article-table { overflow-x: auto; margin: 1.5rem 0; }
.article-table table { width: 100%; min-width: 500px; border-collapse: collapse; font-size: .9rem; }
.article-table th, .article-table td { padding: .7rem .8rem; text-align: left; border-bottom: 1px solid var(--line); }
.article-table th { color: var(--ink); background: var(--surface-soft); }
.article-list { margin: 1rem 0; }
.article-callout { display: grid; gap: .35rem; margin: 1.6rem 0; padding: 1.1rem 1.25rem; border-radius: var(--radius-sm); font-size: 1rem; line-height: 1.65; }
.article-callout p { margin: 0; }
.info-callout { color: #24543f; background: #e5f2e9; border-left: 4px solid var(--accent); }
.warning-callout { color: #754a18; background: #fbf0dc; border-left: 4px solid var(--warm); }
.article-ad { display: grid; justify-items: center; gap: .15rem; margin: 2rem 0; padding: 1.25rem; color: var(--muted); background: #f0f2ef; border: 1px dashed #b6c4ba; border-radius: var(--radius-sm); text-align: center; }
.article-ad span { font-size: .65rem; font-weight: 850; letter-spacing: .15em; text-transform: uppercase; }
.article-ad small { font-size: .72rem; }
.embedded-calculator { display: flex; align-items: center; gap: 1rem; margin: 2rem 0; padding: 1.2rem; background: var(--accent-soft); border: 1px solid #c7dfcf; border-radius: var(--radius-md); }
.embedded-calculator-icon { display: grid; flex: 0 0 auto; place-items: center; width: 44px; height: 44px; color: var(--accent-dark); background: #c9e1d0; border-radius: 10px; font: 700 1.5rem/1 var(--serif); }
.embedded-calculator h2 { margin: .15rem 0; color: var(--ink); font-size: 1.05rem; }
.embedded-calculator p { margin: 0; color: var(--muted); font-size: .82rem; }
.embedded-calculator .button { margin-left: auto; }
.article-faq { margin: 1rem 0; padding: 1rem 1.1rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); }
.article-faq summary { cursor: pointer; color: var(--ink); font-weight: 800; }
.toc, .sidebar-note, .sidebar-tools { position: sticky; top: 100px; display: grid; gap: .65rem; padding: 1rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-md); }
.toc summary { cursor: pointer; color: var(--ink); font-weight: 850; }
.toc nav { display: grid; gap: .5rem; }
.toc a, .sidebar-note a, .sidebar-tools a { color: var(--ink-soft); font-size: .78rem; font-weight: 700; line-height: 1.35; }
.toc a:hover, .sidebar-note a:hover, .sidebar-tools a:hover { color: var(--accent); }
.toc .toc-sub { padding-left: .7rem; color: var(--muted); font-weight: 600; }
.sidebar-note, .sidebar-tools { position: static; margin-top: 1rem; }
.sidebar-note a, .sidebar-tools a { display: flex; justify-content: space-between; padding-top: .55rem; border-top: 1px solid var(--line); }
.article-footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; margin-top: 2.5rem; padding-top: 1.2rem; border-top: 1px solid var(--line); }
.related-section { max-width: 1100px; margin-inline: auto; }

.not-found-page { max-width: 1000px; text-align: center; }
.not-found-page > p { max-width: 590px; margin: -.5rem auto 0; color: var(--muted); }
.not-found-art { position: relative; display: grid; place-items: center; height: 150px; color: var(--accent); }
.not-found-art span { position: relative; z-index: 2; font: 700 clamp(4rem, 12vw, 8rem)/1 var(--serif); letter-spacing: -.1em; }
.not-found-art i { position: absolute; display: block; width: 16px; height: 16px; background: var(--warm); border-radius: 50%; opacity: .7; }
.not-found-art i:nth-child(2) { top: 15%; left: 35%; }
.not-found-art i:nth-child(3) { right: 31%; bottom: 15%; width: 9px; height: 9px; background: var(--accent); }
.not-found-art i:nth-child(4) { top: 28%; right: 25%; width: 6px; height: 6px; }
.search-form-small { max-width: 540px; margin: 1.25rem auto 0; padding: .35rem; background: var(--surface); border: 1px solid var(--line); border-radius: 11px; box-shadow: var(--shadow-sm); }
.not-found-actions { display: flex; justify-content: center; gap: .6rem; margin-top: .8rem; }
.not-found-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 1.5rem; margin-top: 2rem; text-align: left; }
.mini-links { display: grid; margin-top: .75rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-md); }
.mini-links a { display: flex; justify-content: space-between; padding: .8rem 1rem; color: var(--ink-soft); border-bottom: 1px solid var(--line); font-size: .82rem; font-weight: 750; }
.mini-links a:last-child { border-bottom: 0; }

@media (max-width: 1050px) { .article-catalog-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .calculator-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .article-layout { grid-template-columns: minmax(0, 1fr) 220px; } }
@media (max-width: 760px) { .featured-grid, .calculator-layout, .article-layout, .not-found-grid { grid-template-columns: 1fr; } .article-sidebar { order: -1; } .toc { position: static; } .tool-page-header { align-items: start; flex-direction: column; gap: 1rem; } .article-card-featured { grid-template-columns: 1fr; } .article-card-featured .article-card-media img, .article-card-featured .media-placeholder { min-height: 220px; } .article-card-featured .article-card-body { padding: 1.35rem; } .article-content { font-size: 1rem; } .embedded-calculator { align-items: start; flex-wrap: wrap; } .embedded-calculator .button { width: 100%; margin-left: 0; } }
@media (max-width: 480px) { .article-catalog-grid, .article-catalog-grid-small, .calculator-grid, .category-grid { grid-template-columns: 1fr; } .category-grid-small { grid-template-columns: 1fr; } .category-hero { align-items: start; flex-direction: column; } .not-found-actions { align-items: stretch; flex-direction: column; } .not-found-actions .button { width: 100%; } .article-header h1 { font-size: 2.35rem; } }
@media (max-width: 760px) { .calculator-catalog { gap: 2rem; } .calculator-filter-bar { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: thin; } .calculator-filter-bar .filter-label { position: sticky; left: 0; padding-right: .25rem; background: var(--surface); } .calculator-filter-bar .filter-chip { flex: 0 0 auto; } .catalog-section-note { display: none; } }
@media (max-width: 480px) { .calculator-search { margin-top: 1.1rem; } .calculator-search-clear { padding-inline: .35rem; font-size: .68rem; } .calculator-catalog-section .section-heading { align-items: start; flex-direction: column; gap: .35rem; } }