:root {
  --ink: #202528;
  --muted: #5d676c;
  --line: #d9dedc;
  --paper: #fbfaf7;
  --panel: #ffffff;
  --shade: #eef2ef;
  --focus: #1f6b63;
  --danger: #a64b36;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { color: var(--ink); background: var(--paper); }
body { margin: 0; min-height: 100vh; line-height: 1.5; }
a { color: inherit; }
.shell { max-width: 1160px; margin: 0 auto; padding: 24px; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 14px 0 18px; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; text-decoration: none; color: inherit; }
.mark { width: 34px; height: 34px; border-radius: 8px; background: var(--accent); display: grid; place-items: center; color: #fff; font-weight: 800; flex: 0 0 auto; }
.brand strong { display: block; font-size: 15px; }
.brand > span:not(.mark) > span { display: block; color: var(--muted); font-size: 12px; margin-top: 2px; }
.nav { display: flex; gap: 14px; flex-wrap: wrap; color: var(--muted); font-size: 13px; }
.nav a { text-decoration: none; }
.workspace { display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(320px, .98fr); gap: 24px; padding: 34px 0 24px; align-items: start; }
.eyebrow { margin: 0 0 10px; color: var(--accent); font-size: 12px; font-weight: 800; text-transform: uppercase; }
.intro h1 { font-size: 46px; line-height: 1.02; margin: 0 0 14px; max-width: 760px; letter-spacing: 0; }
.intro p { color: var(--muted); font-size: 17px; line-height: 1.62; max-width: 700px; margin: 0 0 22px; }
.meta-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; max-width: 720px; }
.metric { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 12px; min-height: 82px; }
.metric b { display: block; font-size: 22px; color: var(--accent); line-height: 1.05; overflow-wrap: anywhere; }
.metric span { color: var(--muted); font-size: 12px; line-height: 1.35; }
.tool-panel { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 18px; box-shadow: 0 14px 35px rgba(31, 36, 34, .07); }
.tool-panel h2, .section h2 { font-size: 18px; margin: 0 0 12px; }
.panel-note { color: var(--muted); font-size: 13px; line-height: 1.45; margin: -4px 0 14px; }
.input-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
label { display: grid; gap: 6px; font-size: 12px; color: var(--muted); }
input, select { width: 100%; border: 1px solid var(--line); border-radius: 6px; padding: 11px 12px; font: inherit; color: var(--ink); background: #fff; }
.scenario-field { margin-top: 12px; }
button { border: 0; border-radius: 6px; background: var(--accent); color: white; padding: 11px 14px; font-weight: 750; cursor: pointer; }
button.secondary { background: var(--shade); color: var(--ink); border: 1px solid var(--line); }
.actions { display: flex; gap: 10px; margin: 14px 0; flex-wrap: wrap; }
.result { border-radius: 8px; background: var(--soft); border: 1px solid var(--line); padding: 16px; margin-top: 14px; }
.result .value { font-size: 34px; font-weight: 850; color: var(--accent); line-height: 1; }
.result .caption { color: var(--muted); font-size: 13px; line-height: 1.45; margin-top: 8px; }
.bars { display: grid; gap: 9px; margin-top: 16px; }
.bar { display: grid; grid-template-columns: 96px 1fr 42px; align-items: center; gap: 10px; font-size: 12px; color: var(--muted); }
.track { height: 10px; border-radius: 6px; background: var(--shade); overflow: hidden; }
.fill { height: 100%; background: var(--accent-2); border-radius: 6px; }
.mini-list { display: grid; gap: 8px; margin: 14px 0 0; padding: 0; list-style: none; }
.mini-list li { position: relative; padding-left: 14px; color: var(--muted); font-size: 12px; line-height: 1.45; }
.mini-list li::before { content: ""; width: 6px; height: 6px; border-radius: 6px; background: var(--accent-2); position: absolute; left: 0; top: .55em; }
.ad-slot { margin-top: 16px; border: 1px dashed #b8c0bd; border-radius: 8px; min-height: 92px; display: grid; place-items: center; color: var(--muted); font-size: 12px; background: #fff; }
.section { padding: 22px 0; border-top: 1px solid var(--line); }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.list { display: grid; gap: 10px; padding: 0; margin: 0; list-style: none; }
.list li { border: 1px solid var(--line); border-radius: 8px; background: var(--panel); padding: 12px; color: var(--muted); line-height: 1.5; }
.callout { background: var(--soft); border: 1px solid var(--line); border-radius: 8px; padding: 14px; color: var(--muted); line-height: 1.55; }
.content-list { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.footer { color: var(--muted); font-size: 12px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding: 24px 0; border-top: 1px solid var(--line); }
.directory { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 12px; padding: 24px 0; }
.directory a { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 13px; text-decoration: none; display: grid; gap: 6px; }
.directory span { color: var(--muted); font-size: 12px; }
@media (max-width: 820px) {
  .shell { padding: 16px; }
  .topbar, .workspace, .two-col { grid-template-columns: 1fr; display: grid; }
  .nav { justify-content: start; }
  .meta-grid, .input-grid { grid-template-columns: 1fr; }
  .intro h1 { font-size: 36px; }
  .bar { grid-template-columns: 82px 1fr 38px; }
}