:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #2563eb;
  --border: #e5e7eb;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Inter, Arial, sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }
.wrap { width: min(1100px, calc(100% - 32px)); margin: 0 auto; }
.topnav, .footer { display: flex; flex-wrap: wrap; gap: 16px; padding: 18px 0 8px; font-size: 14px; }
.topnav a, .footer a, .tool-card { color: var(--accent); text-decoration: none; }
h1 { font-size: clamp(30px, 4vw, 44px); margin: 8px 0 12px; }
.lead, .eyebrow, .tool-card span { color: var(--muted); }
.eyebrow { font-size: 14px; margin-top: 4px; }
.grid { display: grid; gap: 20px; grid-template-columns: 1.2fr 0.8fr; padding: 24px 0 48px; }
.home-grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); padding: 24px 0 48px; }
.stack-lg { display: grid; gap: 28px; padding: 24px 0 48px; }
.cluster-block { display: grid; gap: 10px; }
.cluster-head p { color: var(--muted); margin-top: 6px; }
.cluster-head a { color: inherit; text-decoration: none; }
.card, .tool-card { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 24px; }
.tool-card { display: grid; gap: 8px; }
.form-grid { display: grid; gap: 16px; }
label { display: grid; gap: 6px; font-weight: 600; }
input { padding: 12px 14px; border: 1px solid var(--border); border-radius: 10px; font: inherit; }
button { background: var(--accent); color: #fff; border: 0; border-radius: 12px; padding: 14px 18px; font: inherit; font-weight: 700; cursor: pointer; }
.result-card p { margin: 10px 0; }
.ad-placeholder { margin-top: 20px; min-height: 180px; border: 2px dashed var(--border); border-radius: 12px; display: grid; place-items: center; color: var(--muted); text-align: center; padding: 16px; }
.content-stack { display: grid; gap: 20px; grid-column: 1 / -1; }
.content-block ul { padding-left: 20px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { border-bottom: 1px solid var(--border); text-align: left; padding: 12px 10px; }
.simple-page { padding: 40px 0; }
@media (max-width: 860px) { .grid { grid-template-columns: 1fr; } .content-stack { grid-column: auto; } }