:root {
  --bg: #f7f8fc;
  --surface: #ffffff;
  --surface-2: #f1f4fb;
  --text: #172033;
  --muted: #63708a;
  --brand: #5b5ce2;
  --brand-2: #7357e8;
  --accent: #0ea5a8;
  --success: #15803d;
  --warning: #b45309;
  --danger: #b42318;
  --border: #dfe5f0;
  --shadow: 0 18px 50px rgba(28, 39, 72, 0.10);
  --shadow-sm: 0 8px 26px rgba(28, 39, 72, 0.08);
  --radius: 22px;
  --radius-sm: 14px;
  --max: 1160px;
}

[data-theme="dark"] {
  --bg: #0d1323;
  --surface: #151d31;
  --surface-2: #1c263d;
  --text: #f4f7ff;
  --muted: #a8b3ca;
  --border: #2c3956;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.30);
  --shadow-sm: 0 8px 26px rgba(0, 0, 0, 0.22);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { max-width: 100%; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 10px;
  z-index: 9999;
  background: var(--surface);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 8px;
}
.skip-link:focus { left: 10px; }

.container { width: min(calc(100% - 32px), var(--max)); margin: 0 auto; }
.narrow { width: min(calc(100% - 32px), 860px); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(16px);
}
.nav-wrap { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.brand { display: flex; align-items: center; gap: 11px; color: var(--text); font-weight: 800; letter-spacing: -0.03em; }
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 40px; height: 40px; display: grid; place-items: center; border-radius: 12px;
  background: linear-gradient(135deg, var(--brand), var(--accent)); color: #fff; box-shadow: var(--shadow-sm);
}
.brand-mark img { width: 40px; height: 40px; display: block; border-radius: 12px; }
.brand-copy small { display: block; color: var(--muted); font-weight: 600; font-size: 11px; letter-spacing: 0.04em; text-transform: uppercase; }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a, .nav-dropdown > button {
  padding: 10px 11px; border-radius: 10px; color: var(--text); border: 0; background: transparent; font-weight: 650;
}
.nav-links a:hover, .nav-dropdown > button:hover { background: var(--surface-2); text-decoration: none; }
.nav-dropdown { position: relative; }
.dropdown-menu {
  position: absolute; right: 0; top: 48px; width: 310px; padding: 10px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow); display: none;
}
.nav-dropdown.open .dropdown-menu { display: grid; }
.dropdown-menu a { display: grid; gap: 2px; }
.dropdown-menu span { color: var(--muted); font-size: 12px; font-weight: 500; }
.nav-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid var(--border);
  border-radius: 12px; background: var(--surface); color: var(--text);
}
.menu-toggle { display: none; }

.hero {
  position: relative;
  padding: 72px 0 34px;
  overflow: hidden;
}
.hero::before, .hero::after {
  content: ""; position: absolute; border-radius: 999px; filter: blur(10px); pointer-events: none;
}
.hero::before { width: 380px; height: 380px; right: -160px; top: -180px; background: rgba(91, 92, 226, 0.15); }
.hero::after { width: 260px; height: 260px; left: -140px; bottom: -90px; background: rgba(14, 165, 168, 0.12); }
.hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 40px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 12px; border-radius: 999px;
  background: color-mix(in srgb, var(--brand) 10%, var(--surface)); color: var(--brand); font-weight: 750; font-size: 13px;
  border: 1px solid color-mix(in srgb, var(--brand) 24%, var(--border));
}
h1, h2, h3 { line-height: 1.18; letter-spacing: -0.035em; }
h1 { font-size: clamp(2.4rem, 5vw, 4.65rem); margin: 18px 0 18px; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.55rem); margin: 0 0 16px; }
h3 { font-size: 1.18rem; margin: 0 0 8px; }
.lead { font-size: clamp(1.05rem, 2vw, 1.25rem); color: var(--muted); max-width: 720px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 24px 0 0; list-style: none; }
.hero-points li { padding: 8px 11px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); font-size: 13px; font-weight: 650; }
.hero-card {
  background: linear-gradient(150deg, var(--surface), color-mix(in srgb, var(--brand) 5%, var(--surface)));
  border: 1px solid var(--border); border-radius: 26px; padding: 24px; box-shadow: var(--shadow);
}
.metric-preview { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 18px; }
.metric-preview div { padding: 16px 12px; border-radius: 16px; background: var(--surface-2); text-align: center; }
.metric-preview strong { display: block; font-size: 1.35rem; }
.metric-preview span { color: var(--muted); font-size: 12px; }

.section { padding: 68px 0; }
.section-sm { padding: 38px 0; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 20px; margin-bottom: 24px; }
.section-head p { color: var(--muted); max-width: 680px; margin: 0; }

.card, .calculator-shell, .content-panel {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm);
}
.card { padding: 24px; }
.card p:last-child { margin-bottom: 0; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.tool-card { display: flex; flex-direction: column; gap: 10px; min-height: 210px; }
.tool-card .tool-icon { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 14px; background: var(--surface-2); color: var(--brand); font-weight: 900; }
.tool-icon svg { width: 25px; height: 25px; display: block; }
.tool-card p { color: var(--muted); margin: 0; flex: 1; }
.tool-card a { font-weight: 750; }

.calculator-shell { overflow: hidden; }
.calculator-top { padding: 24px 24px 0; }
.calculator-top p { margin: 6px 0 18px; color: var(--muted); }
.tabs { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 1px; }
.tab-btn {
  flex: 0 0 auto; border: 1px solid var(--border); background: var(--surface-2); color: var(--text);
  border-radius: 11px 11px 0 0; padding: 11px 14px; font-weight: 750;
}
.tab-btn.active { background: var(--surface); color: var(--brand); border-bottom-color: var(--surface); }
.calculator-body { padding: 24px; border-top: 1px solid var(--border); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.form-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.field { display: grid; gap: 8px; }
.field label { font-weight: 750; font-size: 14px; }
.field small { color: var(--muted); }
input, select, textarea {
  width: 100%; border: 1px solid var(--border); background: var(--bg); color: var(--text); border-radius: 12px;
  padding: 13px 14px; outline: none; min-height: 48px;
}
input:focus, select:focus, textarea:focus { border-color: var(--brand); box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 15%, transparent); }
textarea { min-height: 150px; resize: vertical; }
.form-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 0; border-radius: 12px;
  padding: 12px 17px; font-weight: 800; text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #fff; box-shadow: 0 10px 24px rgba(91,92,226,.24); }
.btn-secondary { background: var(--surface-2); color: var(--text); border: 1px solid var(--border); }
.btn-ghost { background: transparent; color: var(--brand); border: 1px dashed color-mix(in srgb, var(--brand) 50%, var(--border)); }

.result-wrap { display: none; margin-top: 24px; border-top: 1px solid var(--border); padding-top: 24px; }
.result-wrap.visible { display: block; }
.result-hero { padding: 22px; border-radius: 18px; background: linear-gradient(135deg, color-mix(in srgb, var(--brand) 12%, var(--surface)), color-mix(in srgb, var(--accent) 10%, var(--surface))); border: 1px solid color-mix(in srgb, var(--brand) 22%, var(--border)); }
.result-hero .result-main { font-size: clamp(1.65rem, 3.8vw, 2.8rem); font-weight: 900; letter-spacing: -0.04em; margin: 6px 0; }
.result-hero p { margin: 0; color: var(--muted); }
.result-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-top: 14px; }
.result-stat { padding: 15px; border-radius: 14px; background: var(--surface); border: 1px solid var(--border); }
.result-stat strong { display: block; font-size: 1.08rem; }
.result-stat span { color: var(--muted); font-size: 12px; }
.result-note { margin-top: 14px; padding: 14px 16px; border-radius: 12px; background: var(--surface-2); color: var(--muted); }
.result-note.warning { border-left: 4px solid var(--warning); }
.result-note.success { border-left: 4px solid var(--success); }
.result-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 15px; }
.error-box { display: none; margin-top: 16px; padding: 13px 15px; border-radius: 12px; color: var(--danger); background: color-mix(in srgb, var(--danger) 8%, var(--surface)); border: 1px solid color-mix(in srgb, var(--danger) 20%, var(--border)); }
.error-box.visible { display: block; }
.privacy-line { display: flex; gap: 9px; align-items: center; color: var(--muted); font-size: 13px; margin-top: 16px; }

.content-panel { padding: clamp(24px, 4vw, 42px); }
.prose { font-size: 1.04rem; }
.prose p, .prose li { color: color-mix(in srgb, var(--text) 86%, var(--muted)); }
.prose h2 { margin-top: 2.2em; }
.prose h3 { margin-top: 1.7em; }
.prose ul, .prose ol { padding-left: 1.25rem; }
.prose blockquote { margin: 24px 0; padding: 18px 20px; border-left: 4px solid var(--brand); background: var(--surface-2); border-radius: 0 14px 14px 0; }
.prose table { width: 100%; border-collapse: collapse; margin: 24px 0; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--border); padding: 12px 14px; text-align: left; min-width: 130px; }
.prose th { background: var(--surface-2); }
.breadcrumbs { padding-top: 18px; color: var(--muted); font-size: 13px; }
.breadcrumbs a { color: var(--muted); }
.breadcrumbs ol { display: flex; flex-wrap: wrap; align-items: center; gap: 7px; list-style: none; padding: 0; margin: 0; }
.breadcrumbs li + li::before { content: "/"; margin-right: 7px; color: color-mix(in srgb, var(--muted) 55%, transparent); }
.page-hero { padding: 44px 0 28px; }
.page-hero h1 { font-size: clamp(2.15rem, 4vw, 3.6rem); max-width: 850px; }
.page-hero p { color: var(--muted); font-size: 1.12rem; max-width: 760px; }

.callout { padding: 20px; border-radius: 16px; border: 1px solid var(--border); background: var(--surface-2); }
.callout strong { display: block; margin-bottom: 5px; }
.source-list { display: grid; gap: 10px; }
.source-list a { overflow-wrap: anywhere; }
.author-box { margin-top: 34px; padding: 24px; display: flex; width: min(calc(100% - 32px), 860px); gap: 22px; align-items: center; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.author-box > div:last-child { flex: 1 1 auto; min-width: 0; }
.author-box h2 { font-size: 1.45rem; margin: 10px 0 6px; }
.author-box h2 a { color: var(--text); }
.author-box p { color: var(--muted); margin: 0 0 8px; }
.author-avatar { width: 58px; height: 58px; display: grid; place-items: center; border-radius: 16px; color: #fff; font-weight: 900; background: linear-gradient(135deg, var(--brand), var(--accent)); }
.author-photo { width: 112px; height: 112px; object-fit: cover; object-position: 50% 25%; border-radius: 22px; border: 3px solid var(--surface); box-shadow: 0 8px 24px rgba(28,39,72,.18); background: var(--surface-2); }
.author-box-compact { padding: 18px 22px; }
.author-box-compact .author-photo { width: 72px; height: 72px; border-radius: 18px; }
.author-socials { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.author-socials a { padding: 7px 10px; border-radius: 9px; background: var(--surface-2); border: 1px solid var(--border); font-size: 13px; font-weight: 750; }
.editorial-visual { margin-top: 34px; }
.editorial-visual img { display: block; width: 100%; height: auto; border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.editorial-visual figcaption { color: var(--muted); text-align: center; font-size: 13px; margin-top: 10px; }
.research-charts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.research-charts figure { margin: 0; padding: 14px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.research-charts img { display: block; width: 100%; height: auto; border-radius: var(--radius-sm); }
.research-charts figcaption { padding: 10px 6px 2px; color: var(--muted); font-size: 13px; }
.guide-example-table { margin-top: 34px; }
.guide-example-table h2 { margin-top: 14px; }
.post-card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.post-card { overflow: hidden; display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.post-card-image { display: block; aspect-ratio: 16 / 9; overflow: hidden; background: var(--surface-2); }
.post-card-image img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .25s ease; }
.post-card:hover .post-card-image img { transform: scale(1.025); }
.post-card-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.post-card-body h2 { font-size: 1.35rem; margin: 8px 0 10px; }
.post-card-body h2 a { color: var(--text); }
.post-card-body p { color: var(--muted); margin: 0 0 16px; }
.post-card-category, .article-taxonomy { color: var(--brand); font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; }
.post-card-category a, .article-taxonomy a { color: inherit; }
.post-card-link { margin-top: auto; font-weight: 800; }
.archive-header { margin-bottom: 28px; }
.archive-header h1 { margin-bottom: 10px; }
.archive-description { color: var(--muted); max-width: 720px; }
.single-article-header { margin-bottom: 28px; }
.single-featured-image { margin: 0 0 28px; overflow: hidden; border-radius: var(--radius); box-shadow: var(--shadow); }
.single-featured-image img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
.single-article-header h1 { font-size: clamp(2.35rem, 5vw, 4.2rem); margin: 14px 0; }
.article-deck { color: var(--muted); font-size: 1.18rem; max-width: 760px; }
.article-meta { color: var(--muted); font-size: 14px; }
.answer-summary { margin-bottom: 26px; padding: 20px 22px; background: color-mix(in srgb, var(--brand) 7%, var(--surface)); border: 1px solid color-mix(in srgb, var(--brand) 22%, var(--border)); border-radius: var(--radius); }
.answer-summary p { margin: 12px 0 0; color: var(--text); font-size: 1.08rem; line-height: 1.7; }
.single-article-content > section { margin-top: 0; }
.related-tools { margin-top: 34px; padding: 26px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.related-tools h2 { font-size: 1.6rem; margin-top: 12px; }
.related-links { display: flex; flex-wrap: wrap; gap: 10px; }
.related-links a { padding: 9px 12px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; font-weight: 700; }
.check-list { list-style: none; padding: 0 !important; display: grid; gap: 10px; }
.check-list li { position: relative; padding-left: 28px; }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--success); font-weight: 900; }

.faq-list { display: grid; gap: 12px; }
details { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 16px 18px; }
summary { font-weight: 800; cursor: pointer; }
details p { color: var(--muted); }

.stats-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.stats-strip .card strong { display: block; font-size: clamp(1.8rem, 4vw, 3rem); color: var(--brand); }
.stats-strip .card span { color: var(--muted); }

.ad-slot { display: none; min-height: 120px; border: 1px dashed var(--border); border-radius: 14px; place-items: center; color: var(--muted); font-size: 12px; margin: 28px 0; }
.ad-slot.is-enabled { display: grid; }

.site-footer { margin-top: 72px; padding: 48px 0 24px; border-top: 1px solid var(--border); background: var(--surface); }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 30px; }
.footer-grid h3 { font-size: 14px; text-transform: uppercase; letter-spacing: .08em; }
.footer-grid ul { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 8px; }
.footer-grid a { color: var(--muted); }
.footer-bottom { margin-top: 34px; padding-top: 20px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; gap: 18px; color: var(--muted); font-size: 13px; }

.cookie-note {
  position: fixed; z-index: 70; left: 16px; right: 16px; bottom: 16px; margin: auto; max-width: 760px;
  display: none; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 18px;
  background: var(--surface); color: var(--text); border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow);
}
.cookie-note.visible { display: flex; }
.cookie-note p { margin: 0; color: var(--muted); font-size: 13px; }

@media (max-width: 920px) {
  .hero-grid { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-links {
    display: none; position: absolute; left: 16px; right: 16px; top: 68px; padding: 12px; background: var(--surface);
    border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow); flex-direction: column; align-items: stretch;
  }
  .nav-links.open { display: flex; }
  .nav-links a, .nav-dropdown > button { width: 100%; text-align: left; }
  .dropdown-menu { position: static; width: 100%; box-shadow: none; margin-top: 6px; }
  .menu-toggle { display: grid; }
  .research-charts { grid-template-columns: 1fr; }
  .post-card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
  :root { --radius: 16px; --radius-sm: 12px; }
  .container, .narrow { width: min(calc(100% - 24px), var(--max)); }
  .hero { padding: 42px 0 22px; }
  .page-hero { padding: 28px 0 18px; }
  .section { padding: 42px 0; }
  .section-sm { padding: 24px 0; }
  .card { padding: 18px; }
  .calculator-top, .calculator-body { padding-left: 18px; padding-right: 18px; }
  .hero-card { padding: 18px; border-radius: 18px; }
  .eyebrow, .hero-points li { border-radius: 10px; }
  .btn { width: 100%; }
  .author-box { width: min(calc(100% - 24px), 860px); flex-direction: column; align-items: flex-start; padding: 18px; }
  .post-card-grid { grid-template-columns: 1fr; }
  .related-links { display: grid; }
}

@media (max-width: 680px) {
  .container, .narrow { width: min(calc(100% - 22px), var(--max)); }
  .hero { padding-top: 42px; }
  .section { padding: 48px 0; }
  .form-grid, .form-grid.three, .grid-2, .grid-3, .grid-4, .stats-strip { grid-template-columns: 1fr; }
  .result-grid { grid-template-columns: repeat(2, 1fr); }
  .metric-preview { grid-template-columns: repeat(3, 1fr); }
  .calculator-top, .calculator-body { padding-left: 16px; padding-right: 16px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
  .cookie-note { align-items: stretch; flex-direction: column; }
  .brand-copy small { display: none; }
}

@media print {
  .site-header, .site-footer, .form-actions, .result-actions, .cookie-note, .ad-slot { display: none !important; }
  body { background: #fff; color: #000; }
  .calculator-shell, .result-hero, .content-panel { box-shadow: none; border-color: #ccc; }
}


/* WordPress integration */
body.admin-bar .site-header{top:32px}
.agc-hp{position:absolute!important;left:-9999px!important;width:1px!important;height:1px!important;overflow:hidden!important}
.agc-form-success{border-left:4px solid var(--success);margin-bottom:18px}
.agc-form-error{border-left:4px solid var(--danger);margin-bottom:18px}
.wp-caption,.gallery-caption{max-width:100%}.alignleft{float:left;margin:0 24px 20px 0}.alignright{float:right;margin:0 0 20px 24px}.aligncenter{display:block;margin-left:auto;margin-right:auto}
.screen-reader-text{border:0;clip:rect(1px,1px,1px,1px);clip-path:inset(50%);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute!important;width:1px;word-wrap:normal!important}
.entry-generic{padding:48px 0}.entry-generic .content-panel{max-width:860px;margin:auto}
@media(max-width:782px){body.admin-bar .site-header{top:46px}}