:root {
  --scl-ink: #172522;
  --scl-ink-soft: #46554f;
  --scl-moss: #33402f;
  --scl-moss-deep: #263324;
  --scl-moss-light: #e8ede0;
  --scl-clay: #a64f31;
  --scl-paper: #faf7ef;
  --scl-white: #fffdf8;
  --scl-warm: #f7ead6;
  --scl-blue: #eaf1f3;
  --scl-line: rgba(58, 64, 53, .24);
  --scl-sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --scl-serif: Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.scl-rebuild {
  margin: 0;
  color: var(--scl-ink);
  background:
    radial-gradient(circle at 9% 13%, rgba(255, 255, 255, .72), transparent 28rem),
    linear-gradient(180deg, #f7f3e8 0%, #f3efe3 68%, #ede6d8 100%);
  font-family: var(--scl-serif);
  line-height: 1.68;
}
.scl-page { max-width: 1240px; margin: 0 auto; padding: 28px 20px 72px; }
.scl-shell {
  overflow: hidden;
  border: 1px solid var(--scl-line);
  background: rgba(250, 247, 239, .95);
  box-shadow: 0 22px 70px rgba(50, 49, 39, .07);
}
.scl-topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 28px 18px;
  border-bottom: 1px solid var(--scl-line);
}
.scl-brand h1 { margin: 0; font-size: clamp(34px, 4vw, 48px); font-weight: 400; line-height: 1.05; letter-spacing: -.04em; }
.scl-brand p { margin: 8px 0 0; color: var(--scl-moss); font-size: 19px; font-style: italic; }
.scl-nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 18px; }
.scl-nav a {
  padding: 10px 0;
  color: var(--scl-ink);
  font: 650 13px/1.2 var(--scl-sans);
  text-decoration: none;
  white-space: nowrap;
}
.scl-nav a[aria-current="page"] { border-bottom: 1px solid var(--scl-clay); }
.scl-hero { padding: 58px 48px 38px; }
.scl-kicker {
  display: block;
  margin-bottom: 14px;
  color: #526044;
  font: 750 12px/1.3 var(--scl-sans);
  letter-spacing: .13em;
  text-transform: uppercase;
}
.scl-hero h2 { max-width: 14ch; margin: 0; font-size: clamp(44px, 6.2vw, 75px); font-weight: 400; line-height: .98; letter-spacing: -.055em; }
.scl-hero .lead { max-width: 760px; margin: 24px 0 0; color: var(--scl-ink-soft); font: 400 clamp(18px, 2vw, 21px)/1.62 var(--scl-sans); }
.scl-core-line { max-width: 900px; margin: 28px 0 0; padding-left: 22px; border-left: 3px solid var(--scl-clay); font-size: clamp(22px, 2.5vw, 31px); line-height: 1.35; }
.scl-routes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin: 0 48px 54px; background: var(--scl-line); border: 1px solid var(--scl-line); }
.scl-route { min-height: 285px; padding: 30px; background: var(--scl-white); }
.scl-route.primary { background: linear-gradient(145deg, #354430, #5d6a4d); color: #fffdf6; }
.scl-route .scl-kicker { color: var(--scl-clay); }
.scl-route.primary .scl-kicker { color: #e6dfbd; }
.scl-route.primary h3 { color: #fffdf6; }
.scl-route h3 { margin: 0; font-size: clamp(29px, 3vw, 40px); font-weight: 400; line-height: 1.08; }
.scl-route p { margin: 17px 0 0; color: var(--scl-ink-soft); font: 400 16px/1.62 var(--scl-sans); }
.scl-route.primary p { color: rgba(255, 253, 246, .92); }
.scl-button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.scl-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 13px 18px;
  border: 1px solid var(--scl-moss);
  background: var(--scl-moss);
  color: #fffdf6;
  font: 750 14px/1.2 var(--scl-sans);
  text-decoration: none;
  cursor: pointer;
}
.scl-button.secondary { background: transparent; color: var(--scl-moss); }
.scl-route.primary .scl-button { border-color: #fffdf6; background: #fffdf6; color: var(--scl-moss-deep); }
.scl-route.primary .scl-button.secondary { background: transparent; color: #fffdf6; }
.scl-section { padding: 66px 48px 0; scroll-margin-top: 24px; }
.scl-section.compact { padding-top: 42px; }
.scl-section-header { max-width: 820px; }
.scl-section-header h2 { margin: 0; font-size: clamp(35px, 4.4vw, 55px); font-weight: 400; line-height: 1.04; letter-spacing: -.04em; }
.scl-section-header p { margin: 16px 0 0; color: var(--scl-ink-soft); font: 400 17px/1.65 var(--scl-sans); }
.scl-grid { display: grid; gap: 14px; margin-top: 28px; }
.scl-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.scl-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.scl-card, .scl-note, .scl-correction, .scl-boundary, .scl-prompt {
  padding: 24px;
  border: 1px solid var(--scl-line);
  background: var(--scl-white);
}
.scl-card.warm, .scl-note.warm { background: var(--scl-warm); }
.scl-card.olive, .scl-note.olive { background: var(--scl-moss-light); }
.scl-card.blue, .scl-note.blue { background: var(--scl-blue); }
.scl-card h3, .scl-note h3, .scl-boundary h3 { margin: 0; font-size: 25px; font-weight: 400; line-height: 1.18; }
.scl-card p, .scl-note p, .scl-boundary p { margin: 12px 0 0; color: var(--scl-ink-soft); font: 400 15px/1.62 var(--scl-sans); }
.scl-card ul, .scl-note ul { margin: 14px 0 0; padding-left: 20px; color: var(--scl-ink-soft); font: 400 15px/1.62 var(--scl-sans); }
.scl-flow { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin-top: 28px; background: var(--scl-line); border: 1px solid var(--scl-line); }
.scl-flow div { min-height: 118px; padding: 20px; background: var(--scl-paper); }
.scl-flow span { color: var(--scl-clay); font: 750 12px/1.2 var(--scl-sans); }
.scl-flow strong { display: block; margin-top: 9px; font-size: 20px; font-weight: 400; line-height: 1.25; }
.scl-article { max-width: 870px; }
.scl-article p, .scl-article li { color: var(--scl-ink-soft); font: 400 17px/1.72 var(--scl-sans); }
.scl-article h3 { margin: 42px 0 12px; font-size: 30px; font-weight: 400; line-height: 1.18; }
.scl-article blockquote { margin: 28px 0; padding: 20px 24px; border-left: 3px solid var(--scl-clay); background: var(--scl-white); font-size: 25px; line-height: 1.42; }
.scl-practice-check { margin-top: 28px; padding: 28px; border: 1px solid var(--scl-moss); background: var(--scl-moss-light); }
.scl-practice-check h3 { margin: 0; font-size: 29px; font-weight: 400; }
.scl-practice-check ol { margin: 18px 0 0; padding-left: 24px; }
.scl-practice-check li { margin: 8px 0; color: var(--scl-ink); font: 650 16px/1.5 var(--scl-sans); }
.scl-correction { margin-top: 28px; border-left: 4px solid var(--scl-clay); background: var(--scl-warm); }
.scl-correction strong { display: block; font: 750 13px/1.3 var(--scl-sans); letter-spacing: .08em; text-transform: uppercase; }
.scl-correction p { margin: 10px 0 0; color: var(--scl-ink-soft); font: 400 15px/1.62 var(--scl-sans); }
.scl-boundary-strip { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin-top: 24px; background: var(--scl-line); border: 1px solid var(--scl-line); }
.scl-boundary-strip div { padding: 18px; background: var(--scl-paper); font: 650 14px/1.5 var(--scl-sans); }
.scl-steps { counter-reset: sclstep; display: grid; gap: 1px; margin-top: 28px; background: var(--scl-line); border: 1px solid var(--scl-line); }
.scl-step { counter-increment: sclstep; display: grid; grid-template-columns: 70px 1fr; gap: 18px; padding: 22px; background: var(--scl-white); }
.scl-step::before { content: "0" counter(sclstep); color: var(--scl-clay); font: 750 13px/1.4 var(--scl-sans); }
.scl-step h3 { margin: 0; font-size: 23px; font-weight: 400; }
.scl-step p { margin: 8px 0 0; color: var(--scl-ink-soft); font: 400 15px/1.6 var(--scl-sans); }
.scl-five { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 1px; margin-top: 28px; background: var(--scl-line); border: 1px solid var(--scl-line); }
.scl-five div { padding: 18px; background: var(--scl-white); font: 650 14px/1.48 var(--scl-sans); }
.scl-prompt { margin-top: 28px; }
.scl-prompt summary { cursor: pointer; font: 750 16px/1.4 var(--scl-sans); }
.scl-prompt pre { max-height: 650px; margin: 20px 0 0; padding: 20px; overflow: auto; background: #f1ede4; color: #26332f; font: 400 13px/1.62 "Courier New", monospace; white-space: pre-wrap; }
.scl-prompt .scl-button-row { margin-top: 0; margin-bottom: 16px; }
.scl-resource-group { margin-top: 32px; }
.scl-resource-group > h3 { margin: 0 0 14px; font-size: 28px; font-weight: 400; }
.scl-update-log { margin: 66px 48px 0; padding: 30px; border-top: 1px solid var(--scl-line); border-bottom: 1px solid var(--scl-line); background: rgba(247, 234, 214, .55); }
.scl-update-log h2 { margin: 0; font-size: 30px; font-weight: 400; }
.scl-update-log p { margin: 12px 0 0; color: var(--scl-ink-soft); font: 400 15px/1.62 var(--scl-sans); }
.scl-end { padding: 54px 48px; }
.scl-end blockquote { max-width: 880px; margin: 0; font-size: clamp(25px, 3vw, 39px); line-height: 1.35; }
.scl-small { color: var(--scl-ink-soft); font: 400 13px/1.55 var(--scl-sans); }

@media (max-width: 900px) {
  .scl-topbar { display: block; }
  .scl-nav { justify-content: flex-start; margin-top: 18px; gap: 10px 18px; }
  .scl-routes, .scl-grid.three, .scl-five { grid-template-columns: 1fr; }
  .scl-grid.two, .scl-boundary-strip { grid-template-columns: 1fr; }
  .scl-flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  .scl-page { padding: 0; }
  .scl-shell { border: 0; }
  .scl-topbar { padding: 20px; }
  .scl-hero { padding: 38px 20px 28px; }
  .scl-hero h2 { font-size: clamp(42px, 14vw, 60px); }
  .scl-routes { grid-template-columns: 1fr; margin: 0 20px 42px; }
  .scl-route { min-height: auto; padding: 24px; }
  .scl-section { padding: 52px 20px 0; }
  .scl-flow { grid-template-columns: 1fr; }
  .scl-step { grid-template-columns: 44px 1fr; padding: 19px; }
  .scl-button { width: 100%; min-height: 54px; }
  .scl-update-log { margin: 54px 20px 0; padding: 24px 20px; }
  .scl-end { padding: 42px 20px; }
}