/* ============================================================
   THE CLEAR SUM — shared content-page identity
   Same tokens as the calculator app, trimmed for simple
   article/legal pages that don't need the full calculator CSS.
   ============================================================ */

:root{
  --paper:      #f4f5f3;
  --card:       #ffffff;
  --ink:        #1b2430;
  --ink-2:      #59636f;
  --ink-3:      #8b95a0;
  --rule:       #e3e6e3;
  --rule-2:     #edefed;
  --accent:     #264a6b;
  --accent-2:   #2f5c85;
  --accent-ink: #ffffff;
  --accent-soft:#e8eef4;
  --pos:        #1f7a43;

  --shadow-sm: 0 1px 2px rgba(20,28,40,.05);
  --shadow-md: 0 1px 2px rgba(20,28,40,.04), 0 10px 30px -16px rgba(20,28,40,.18);
  --radius: 12px;
  --radius-sm: 9px;
  --maxw: 760px;

  --sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --serif: 'Spectral', Georgia, 'Times New Roman', serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark){
  :root{
    --paper: #101318; --card: #171b21; --ink: #e9ebe7; --ink-2: #9aa3ac; --ink-3: #6b7580;
    --rule: #282d35; --rule-2: #20242b; --accent: #7ba7d9; --accent-2: #9cc0e6;
    --accent-ink: #0e1116; --accent-soft: #1c2732; --pos: #4bbd7b;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.3);
    --shadow-md: 0 1px 2px rgba(0,0,0,.3), 0 14px 34px -18px rgba(0,0,0,.6);
  }
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body{
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--sans); font-size: 16px; line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a{ color: var(--accent); text-underline-offset: 3px; }
.skip{
  position: absolute; left: 12px; top: -60px;
  background: var(--card); color: var(--ink);
  border: 1px solid var(--rule); border-radius: 8px;
  padding: 10px 16px; z-index: 300; font-weight: 500;
  transition: top .15s ease;
}
.skip:focus{ top: 12px; }

/* -------- header -------- */
.site{
  background: var(--card); border-bottom: 1px solid var(--rule);
  position: sticky; top: 0; z-index: 50;
}
.site-inner{
  max-width: 1100px; margin: 0 auto; padding: 14px 20px;
  display: flex; align-items: center; gap: 20px;
}
.brand{
  display: flex; align-items: center; gap: 10px;
  font-family: var(--serif); font-weight: 600; font-size: 1.15rem;
  color: var(--ink); text-decoration: none; flex-shrink: 0;
}
.brand .glyph{
  width: 30px; height: 30px; display: grid; place-items: center;
  border: 1px solid var(--rule); border-radius: 8px;
  background: var(--card); color: var(--accent); flex-shrink: 0;
}
.brand .glyph svg{ width: 17px; height: 17px; }
.site-nav{
  margin-left: auto; display: flex; gap: 4px; flex-wrap: wrap;
}
.site-nav a{
  font-size: 0.86rem; font-weight: 500; color: var(--ink-2);
  text-decoration: none; padding: 7px 12px; border-radius: 999px;
  transition: background .15s ease, color .15s ease;
}
.site-nav a:hover{ color: var(--ink); background: var(--rule-2); }
.site-nav a.current{ color: var(--accent); background: var(--accent-soft); }

/* -------- content -------- */
main.content{
  max-width: var(--maxw); margin: 0 auto; padding: 48px 20px 64px;
}
.eyebrow{
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: .04em;
  text-transform: uppercase; color: var(--ink-3); margin: 0 0 10px;
}
main.content h1{
  font-family: var(--serif); font-weight: 600; font-size: clamp(1.7rem, 3.5vw, 2.3rem);
  line-height: 1.2; margin: 0 0 14px; color: var(--ink);
}
main.content .lede{
  font-size: 1.05rem; color: var(--ink-2); margin: 0 0 32px; line-height: 1.6;
}
main.content h2{
  font-family: var(--serif); font-weight: 600; font-size: 1.35rem;
  margin: 40px 0 12px; color: var(--ink);
}
main.content h3{ font-size: 1.05rem; margin: 26px 0 8px; color: var(--ink); }
main.content p{ margin: 0 0 16px; color: var(--ink); }
main.content .updated{ font-size: 0.82rem; color: var(--ink-3); margin: -8px 0 28px; }
main.content ul, main.content ol{ margin: 0 0 16px; padding-left: 22px; }
main.content li{ margin-bottom: 6px; }
main.content strong{ font-weight: 600; }
main.content code{ font-family: var(--mono); font-size: 0.88em; background: var(--rule-2); padding: 1px 5px; border-radius: 4px; }

.callout{
  background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius);
  padding: 20px 22px; margin: 28px 0; box-shadow: var(--shadow-sm);
}
.callout p:last-child{ margin-bottom: 0; }

.cta{
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent); color: var(--accent-ink); text-decoration: none;
  font-weight: 600; font-size: 0.95rem; padding: 12px 20px;
  border-radius: 999px; margin: 8px 0 4px;
  transition: background .15s ease, transform .1s ease;
}
.cta:hover{ background: var(--accent-2); }
.cta svg{ width: 16px; height: 16px; }

.guide-grid{
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px; margin: 28px 0;
}
.guide-card{
  display: block; background: var(--card); border: 1px solid var(--rule);
  border-radius: var(--radius); padding: 18px 20px; text-decoration: none;
  color: var(--ink); box-shadow: var(--shadow-sm); transition: box-shadow .15s ease, transform .1s ease;
}
.guide-card:hover{ box-shadow: var(--shadow-md); transform: translateY(-1px); }
.guide-card h3{ margin: 0 0 6px; font-size: 1.02rem; font-family: var(--serif); }
.guide-card p{ margin: 0; font-size: 0.86rem; color: var(--ink-2); }

.breadcrumb{ font-size: 0.85rem; color: var(--ink-3); margin: 0 0 18px; }
.breadcrumb a{ color: var(--ink-2); }

/* -------- footer -------- */
.site-foot{ border-top: 1px solid var(--rule); background: var(--card); }
.foot-inner{
  max-width: 1100px; margin: 0 auto; padding: 28px 20px 40px;
  text-align: center;
}
.foot-inner .disclaimer{
  font-size: 0.82rem; color: var(--ink-3); max-width: 640px; margin: 0 auto 14px; line-height: 1.6;
}
.foot-links{
  display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 4px; margin-bottom: 6px;
}
.foot-links a{
  font-size: 0.84rem; color: var(--ink-2); text-decoration: none;
  padding: 6px 10px; border-radius: 999px;
}
.foot-links a:hover{ background: var(--rule-2); color: var(--ink); }