:root {
  --bg: #f7f6f2;
  --card: #ffffff;
  --ink: #1d2328;
  --mute: #5b6670;
  --line: #e2dfd6;
  --accent: #1f4e5f;
  --accent-soft: #e6eef0;
  --note: #8a5a00;
  --note-soft: #fbf3e2;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #13171a;
    --card: #1b2126;
    --ink: #e7ebee;
    --mute: #9aa6b0;
    --line: #2b333a;
    --accent: #7fc1d3;
    --accent-soft: #1d2d33;
    --note: #f0c56b;
    --note-soft: #2a2416;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
}
.wrap { max-width: 44rem; margin: 0 auto; padding: 0 16px; }
header { padding: 3.5rem 0 1.5rem; }
.brand { font-weight: 700; letter-spacing: -.01em; font-size: 1.05rem;
         color: var(--accent); margin: 0 0 1.75rem; }
h1 { font-size: clamp(1.9rem, 5vw, 2.6rem); line-height: 1.15;
     letter-spacing: -.02em; margin: 0 0 1rem; }
.lede { font-size: 1.15rem; color: var(--mute); margin: 0; }
.note {
  margin: 2rem 0;
  padding: .85rem 1rem;
  border-left: 3px solid var(--note);
  background: var(--note-soft);
  border-radius: 0 8px 8px 0;
  font-size: .95rem;
}
.note b { color: var(--note); }
h2 { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em;
     color: var(--mute); margin: 2.5rem 0 .75rem; }
.tool {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.5rem;
}
.tool .num { font-size: .8rem; color: var(--mute); margin: 0 0 .25rem; }
.tool h3 { font-size: 1.5rem; margin: 0 0 .35rem; letter-spacing: -.01em; }
.tool .tag { font-size: 1.1rem; margin: 0 0 1rem; }
.tool ul { margin: 0 0 1.25rem; padding-left: 1.1rem; }
.tool li { margin: .3rem 0; }
.cta {
  display: inline-block;
  background: var(--accent);
  color: var(--bg);
  text-decoration: none;
  font-weight: 600;
  padding: .6rem 1.1rem;
  border-radius: 8px;
}
.cta:focus-visible, a:focus-visible { outline: 3px solid var(--note);
                                      outline-offset: 2px; }
.small { font-size: .9rem; color: var(--mute); }
.later {
  border: 1px dashed var(--line);
  border-radius: 12px;
  padding: 1rem 1.5rem;
  color: var(--mute);
  margin-top: 1rem;
}
a { color: var(--accent); }
footer { margin: 3.5rem 0 2.5rem; padding-top: 1.25rem;
         border-top: 1px solid var(--line); font-size: .85rem;
         color: var(--mute); }
footer p { margin: .3rem 0; }
.ctas { display: flex; flex-wrap: wrap; gap: .6rem; margin: 1rem 0 .5rem; }
.ctas .cta { margin: 0; }
.cta.secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); }