:root {
  --bg: #f5f7f3;
  --card: #ffffff;
  --ink: #18221d;
  --muted: #5b6961;
  --accent: #08745a;
  --accent-dark: #075844;
  --soft: #e6f4ee;
  --line: #dce5df;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
}
a { color: var(--accent-dark); }
.topbar, footer {
  max-width: 1120px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo { color: var(--ink); font-size: 1.35rem; font-weight: 800; text-decoration: none; letter-spacing: -0.02em; }
nav { display: flex; flex-wrap: wrap; gap: 18px; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--accent); }
main { max-width: 1120px; margin: 0 auto; padding: 28px 24px 72px; }
.hero { max-width: 760px; padding: 64px 0 48px; }
.eyebrow { color: var(--accent); font-weight: 700; text-transform: uppercase; letter-spacing: .08em; font-size: .78rem; }
h1 { font-size: clamp(2.4rem, 7vw, 4.8rem); line-height: 1.02; letter-spacing: -0.055em; margin: 14px 0 20px; }
.hero > p:last-child { color: var(--muted); font-size: 1.15rem; max-width: 680px; }
section { margin-top: 56px; }
.section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; border-bottom: 1px solid var(--line); margin-bottom: 20px; }
h2 { font-size: 1.5rem; margin: 0 0 12px; }
.section-heading span { color: var(--muted); font-size: .9rem; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; }
.tool-card { display: block; min-height: 190px; padding: 22px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); color: var(--ink); text-decoration: none; transition: transform .15s ease, border-color .15s ease; }
.tool-card:hover { transform: translateY(-2px); border-color: var(--accent); }
.tool-card strong { display: block; font-size: 1.18rem; line-height: 1.3; margin: 12px 0 8px; }
.tool-card p { color: var(--muted); margin: 0; }
.category { display: inline-block; padding: 4px 9px; border-radius: 999px; background: var(--soft); color: var(--accent-dark); font-size: .76rem; font-weight: 700; }
.principles { max-width: 760px; padding: 28px; border-radius: 14px; background: var(--soft); }
.principles li + li { margin-top: 8px; }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
.page { max-width: 760px; }
.page h1 { font-size: clamp(2rem, 6vw, 3.5rem); }
.page h2 { margin-top: 36px; }
.page .lede { color: var(--muted); font-size: 1.1rem; }
@media (max-width: 640px) {
  .topbar, footer { align-items: flex-start; flex-direction: column; }
  .hero { padding-top: 36px; }
}