:root {
  --ssr-paper: #f3f8f1;
  --ssr-surface: #ffffff;
  --ssr-ink: #17242a;
  --ssr-muted: #607176;
  --ssr-rule: #c9dad3;
  --ssr-cobalt: #315cff;
  --ssr-lime: #d9ff45;
  --ssr-coral: #ff6f61;
  --ssr-slate: #263940;
  --ssr-shadow: 0 18px 50px rgba(30, 52, 58, 0.12);
  --ssr-display: Bahnschrift, 'Aptos Display', 'Segoe UI Variable Display', 'Arial Narrow', Arial, sans-serif;
  --ssr-body: 'Atkinson Hyperlegible', 'Trebuchet MS', Verdana, system-ui, sans-serif;
  --ssr-mono: 'Cascadia Mono', 'SFMono-Regular', Consolas, monospace;
}

body {
  margin: 0;
  background: var(--ssr-paper);
  color: var(--ssr-ink);
  font-family: var(--ssr-body);
}

.ssr-home,
.ssr-article {
  max-width: 1240px;
  margin: 0 auto;
  padding: 28px;
}

a {
  color: inherit;
}

.learning-hero {
  background: var(--ssr-surface);
  border: 2px solid var(--ssr-slate);
  border-radius: 28px;
  box-shadow: var(--ssr-shadow);
  overflow: hidden;
}

.hero-marker {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 2px solid var(--ssr-slate);
  background: var(--ssr-lime);
  font-family: var(--ssr-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.marker-dot {
  width: 14px;
  height: 14px;
  border: 2px solid var(--ssr-slate);
  border-radius: 50%;
  background: var(--ssr-coral);
  box-shadow: 5px 0 0 var(--ssr-cobalt);
}

.marker-author {
  margin-left: auto;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 0;
}

.hero-copy {
  padding: clamp(34px, 6vw, 72px);
  border-right: 2px solid var(--ssr-slate);
}

.eyebrow,
.board-kicker,
.panel-label,
.rail-label,
.article-publication {
  margin: 0 0 14px;
  font-family: var(--ssr-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ssr-muted);
}

.learning-hero h1,
.article-hero h1 {
  margin: 0;
  font-family: var(--ssr-display);
  font-size: clamp(48px, 9vw, 116px);
  line-height: 0.88;
  letter-spacing: -0.07em;
  max-width: 880px;
}

.dek {
  max-width: 760px;
  margin: 28px 0 0;
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.45;
  color: #33464c;
}

.loop-panel {
  padding: 26px;
  background: #e7f0ec;
}

.loop-panel ol,
.competency-rail ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

.loop-panel li {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 12px;
  align-items: center;
  padding: 16px 0;
  border-top: 2px solid var(--ssr-rule);
  font-weight: 700;
}

.loop-panel li span {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 28px;
  background: var(--ssr-surface);
  border: 2px solid var(--ssr-slate);
  font-family: var(--ssr-mono);
  font-size: 11px;
}

.topic-belt {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 18px;
  border-top: 2px solid var(--ssr-slate);
  background: #f8fbf6;
}

.topic-belt a,
.topic-belt span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 4px 12px;
  border: 2px solid var(--ssr-rule);
  border-radius: 999px;
  background: var(--ssr-surface);
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
}

.competence-board {
  margin-top: 28px;
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 18px;
}

.board-heading,
.section-intro,
.ritual-strip,
.skill-card,
.article-hero,
.competency-rail,
.practice-panel {
  background: var(--ssr-surface);
  border: 2px solid var(--ssr-slate);
  border-radius: 24px;
  box-shadow: var(--ssr-shadow);
}

.board-heading {
  padding: 26px;
}

.board-heading h2,
.section-intro h2 {
  margin: 0;
  font-family: var(--ssr-display);
  font-size: clamp(30px, 4vw, 54px);
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.capability-run {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.capability-run li {
  position: relative;
  min-height: 210px;
  padding: 18px;
  border: 2px solid var(--ssr-slate);
  border-radius: 20px;
  background: var(--ssr-surface);
}

.capability-run li::after {
  content: '';
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 20px;
  height: 10px;
  border-top: 4px solid var(--ssr-cobalt);
  border-bottom: 4px solid var(--ssr-cobalt);
}

.run-index {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin-bottom: 22px;
  border: 2px solid var(--ssr-slate);
  background: var(--ssr-lime);
  font-family: var(--ssr-mono);
  font-weight: 800;
}

.capability-run strong {
  display: block;
  font-family: var(--ssr-display);
  font-size: 28px;
  letter-spacing: -0.03em;
}

.capability-run p {
  margin: 10px 0 34px;
  color: var(--ssr-muted);
  line-height: 1.45;
}

.syllabus-section {
  margin-top: 36px;
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.section-intro {
  padding: 28px;
  position: sticky;
  top: 20px;
}

.section-intro p:last-child {
  margin: 18px 0 0;
  color: var(--ssr-muted);
  line-height: 1.6;
}

.post-stack {
  display: grid;
  gap: 16px;
}

.skill-card {
  overflow: hidden;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.skill-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 24px 60px rgba(30, 52, 58, 0.18);
}

.skill-card-link {
  display: block;
  padding: 0;
  text-decoration: none;
}

.card-topline {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 16px;
  border-bottom: 2px solid var(--ssr-slate);
  background: #e7f0ec;
  font-family: var(--ssr-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.card-layout {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 18px;
  padding: 20px;
}

.mini-ladder {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
  min-height: 130px;
  border-right: 2px solid var(--ssr-rule);
}

.mini-ladder span {
  display: block;
  width: 54px;
  height: 14px;
  border: 2px solid var(--ssr-slate);
  background: var(--ssr-lime);
}

.mini-ladder span:nth-child(2) {
  margin-left: 14px;
  background: var(--ssr-surface);
}

.mini-ladder span:nth-child(3) {
  margin-left: 28px;
  background: var(--ssr-cobalt);
}

.card-copy h2 {
  margin: 0;
  font-family: var(--ssr-display);
  font-size: clamp(27px, 3vw, 42px);
  line-height: 1;
  letter-spacing: -0.045em;
}

.card-copy p {
  margin: 12px 0 18px;
  color: var(--ssr-muted);
  line-height: 1.55;
  font-size: 16px;
}

.card-prompt {
  display: inline-block;
  padding: 8px 10px;
  border-left: 6px solid var(--ssr-coral);
  background: #fff6f4;
  font-size: 13px;
  font-weight: 800;
}

.ritual-strip {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  overflow: hidden;
}

.ritual-strip div {
  padding: 18px;
  border-right: 2px solid var(--ssr-slate);
}

.ritual-strip div:last-child {
  border-right: 0;
}

.ritual-strip strong {
  display: block;
  font-family: var(--ssr-display);
  font-size: 25px;
  letter-spacing: -0.03em;
}

.ritual-strip span {
  display: block;
  margin-top: 4px;
  color: var(--ssr-muted);
}

.article-hero {
  padding: clamp(28px, 5vw, 62px);
  margin-bottom: 24px;
}

.article-nav {
  margin-bottom: 28px;
  font-weight: 800;
}

.article-nav a {
  text-decoration: none;
  border-bottom: 3px solid var(--ssr-lime);
}

.article-meta {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 2px solid var(--ssr-rule);
  color: var(--ssr-muted);
  font-family: var(--ssr-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.article-frame {
  display: grid;
  grid-template-columns: 180px minmax(0, 720px) 240px;
  gap: 20px;
  align-items: start;
}

.competency-rail,
.practice-panel {
  padding: 18px;
  position: sticky;
  top: 20px;
}

.competency-rail li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 9px;
  align-items: center;
  padding: 12px 0;
  border-top: 2px solid var(--ssr-rule);
  font-weight: 800;
}

.competency-rail li span {
  display: inline-grid;
  place-items: center;
  height: 28px;
  border: 2px solid var(--ssr-slate);
  background: var(--ssr-lime);
  font-family: var(--ssr-mono);
  font-size: 12px;
}

.article-body {
  background: var(--ssr-surface);
  border: 2px solid var(--ssr-slate);
  border-radius: 24px;
  padding: clamp(26px, 4vw, 54px);
  box-shadow: var(--ssr-shadow);
  font-size: 18px;
  line-height: 1.72;
}

.article-body > *:first-child {
  margin-top: 0;
}

.article-body h2,
.article-body h3 {
  font-family: var(--ssr-display);
  line-height: 1;
  letter-spacing: -0.04em;
}

.article-body h2 {
  margin-top: 2.1em;
  font-size: 38px;
}

.article-body h3 {
  margin-top: 1.8em;
  font-size: 27px;
}

.article-body p,
.article-body li {
  color: #273a40;
}

.article-body a {
  color: var(--ssr-cobalt);
  font-weight: 800;
  text-decoration-thickness: 3px;
  text-underline-offset: 3px;
}

.article-body blockquote {
  margin: 32px 0;
  padding: 18px 22px;
  border: 2px solid var(--ssr-slate);
  border-left-width: 12px;
  border-left-color: var(--ssr-lime);
  background: #f8fbf6;
  font-weight: 800;
}

.article-body code {
  padding: 2px 5px;
  border: 1px solid var(--ssr-rule);
  background: #eef5f1;
  font-family: var(--ssr-mono);
  font-size: 0.88em;
}

.note-cell {
  padding: 14px 0;
  border-top: 2px solid var(--ssr-rule);
  color: var(--ssr-muted);
  font-size: 14px;
  line-height: 1.45;
}

@media (max-width: 980px) {
  .hero-grid,
  .competence-board,
  .syllabus-section,
  .article-frame {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    border-right: 0;
    border-bottom: 2px solid var(--ssr-slate);
  }

  .capability-run,
  .ritual-strip {
    grid-template-columns: 1fr 1fr;
  }

  .section-intro,
  .competency-rail,
  .practice-panel {
    position: static;
  }
}

@media (max-width: 620px) {
  .ssr-home,
  .ssr-article {
    padding: 14px;
  }

  .learning-hero h1,
  .article-hero h1 {
    font-size: 50px;
  }

  .capability-run,
  .ritual-strip,
  .card-layout {
    grid-template-columns: 1fr;
  }

  .mini-ladder {
    min-height: auto;
    flex-direction: row;
    border-right: 0;
    border-bottom: 2px solid var(--ssr-rule);
    padding-bottom: 14px;
  }

  .mini-ladder span:nth-child(2),
  .mini-ladder span:nth-child(3) {
    margin-left: 0;
  }

  .marker-author {
    display: none;
  }
}