body.sprout { margin: 0; }
.catalogue { --sidebar-width: 230px; }
.catalogue [hidden] { display: none !important; }
.catalogue h1, .catalogue h2, .catalogue h3, .catalogue p { margin-top: 0; }
.catalogue .skip-link { position: fixed; top: -100px; left: 16px; z-index: 10; }
.catalogue .skip-link:focus { top: 16px; }
.catalogue .sidebar {
  position: fixed; inset: 0 auto 0 0; width: var(--sidebar-width); padding: 32px 24px;
  border-right: 1px solid var(--sp-border); display: flex; flex-direction: column; background: var(--sp-background);
}
.catalogue .brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-size: 25px; font-weight: 700; letter-spacing: -1px; }
.catalogue .brand-mark { width: 34px; height: 34px; }
.catalogue .edition { color: var(--sp-muted-foreground); font: 10px var(--sp-font-mono); letter-spacing: 1.5px; margin: 12px 0 40px 44px; }
.catalogue .nav-label { margin: 28px 12px 10px; color: var(--sp-muted-foreground); font-size: 10px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; }
.catalogue .sidebar nav a { display: flex; align-items: center; justify-content: space-between; min-height: 44px; padding: 10px 12px; border-radius: 9px; text-decoration: none; font-size: 13px; margin: 3px 0; }
.catalogue .sidebar nav a:hover { background: var(--sp-muted); }
.catalogue .sidebar nav a[aria-current="location"] { background: var(--sp-accent); color: var(--sp-accent-foreground); font-weight: 700; }
.catalogue .nav-number { color: var(--sp-muted-foreground); font: 10px var(--sp-font-mono); }
.catalogue .sidebar-note { margin-top: auto; padding-top: 32px; font-size: 12px; color: var(--sp-muted-foreground); }
.catalogue .sidebar-note p { margin: 12px 0 0; }
.catalogue .mini-sprout { font-family: var(--sp-font-display); font-style: italic; font-size: 28px; color: var(--sp-primary); }
.catalogue .main { margin-left: var(--sidebar-width); }
.catalogue .topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 48px; border-bottom: 1px solid var(--sp-border); }
.catalogue .breadcrumb { font-size: 12px; color: var(--sp-muted-foreground); }
.catalogue .breadcrumb span { color: var(--sp-foreground); margin-left: 10px; }
.catalogue .topbar-actions { display: flex; align-items: center; gap: 12px; }
.catalogue .content { max-width: 1280px; margin: 0 auto; padding: 48px; }
.catalogue section { scroll-margin-top: 24px; }
.catalogue .eyebrow { font: 10px var(--sp-font-mono); letter-spacing: 1.6px; text-transform: uppercase; color: var(--sp-muted-foreground); }
.catalogue .hero { position: relative; display: grid; grid-template-columns: 1.3fr 0.7fr; align-items: center; gap: 24px; padding: 12px 0 48px; }
.catalogue .hero h1 { font-family: var(--sp-font-display); font-size: var(--sp-text-display); line-height: 1.05; font-weight: 400; letter-spacing: -2.5px; margin: 22px 0; }
.catalogue .hero h1 em { color: var(--sp-primary); }
.catalogue .hero-copy { max-width: 440px; font-size: 14px; color: var(--sp-muted-foreground); line-height: 1.8; margin-bottom: 24px; }
.catalogue .hero-art { width: 100%; max-width: 300px; justify-self: center; transform: rotate(-5deg); }
.catalogue .hero-links { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.catalogue .principles { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--sp-border); border-bottom: 1px solid var(--sp-border); margin-bottom: 52px; }
.catalogue .principle { padding: 22px 20px; font-size: 12px; color: var(--sp-muted-foreground); }
.catalogue .principle:first-child { padding-left: 0; }
.catalogue .principle + .principle { border-left: 1px solid var(--sp-border); }
.catalogue .principle strong { display: block; margin-bottom: 5px; font-size: 13px; color: var(--sp-foreground); }
.catalogue .section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 22px; }
.catalogue .section-heading h2 { margin: 0; font-size: 23px; font-weight: 400; letter-spacing: -0.7px; }
.catalogue .section-heading h2 span { font: 11px var(--sp-font-mono); color: var(--sp-muted-foreground); margin-right: 12px; letter-spacing: 0; }
.catalogue .section-heading > p { margin: 0; color: var(--sp-muted-foreground); font-size: 12px; }
.catalogue .section { margin-bottom: 52px; }
.catalogue .palette { display: grid; grid-template-columns: 1.5fr repeat(5, 1fr); gap: 10px; }
.catalogue .swatch { padding: 0; border: 1px solid var(--sp-border); border-radius: 12px; background: var(--sp-surface); color: var(--sp-foreground); text-align: left; overflow: hidden; cursor: pointer; }
.catalogue .swatch-color { display: block; height: 80px; background: var(--swatch); }
.catalogue .swatch-info { display: grid; gap: 3px; padding: 12px; font-size: 12px; }
.catalogue .swatch-info code { font: 10px var(--sp-font-mono); color: var(--sp-muted-foreground); }
.catalogue .foundation-details { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 16px; }
.catalogue .foundation-card { padding: 22px; }
.catalogue .type-sample { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin: 18px 0 8px; }
.catalogue .type-sample strong { font: 38px var(--sp-font-display); letter-spacing: -1px; }
.catalogue .type-sample span { font-size: 19px; }
.catalogue .small-note { font-size: 11px; line-height: 1.7; color: var(--sp-muted-foreground); margin: 0; }
.catalogue .spacing-samples { display: flex; align-items: end; gap: 16px; min-height: 63px; margin: 8px 0 10px; }
.catalogue .spacing-sample { display: grid; justify-items: center; gap: 5px; font: 10px var(--sp-font-mono); color: var(--sp-muted-foreground); }
.catalogue .spacing-sample i { display: block; width: var(--size); height: var(--size); background: var(--sp-lilac); border: 1px solid var(--sp-lilac-foreground); border-radius: 3px; }
.catalogue .component-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.catalogue .specimen { min-width: 0; overflow: hidden; }
.catalogue .specimen-head { display: flex; align-items: center; justify-content: space-between; padding: 15px 22px; border-bottom: 1px solid var(--sp-border); }
.catalogue .specimen-head h3 { margin: 0; font-size: 13px; }
.catalogue .specimen-head code { font: 10px var(--sp-font-mono); color: var(--sp-muted-foreground); }
.catalogue .specimen-body { padding: 24px 22px; display: grid; gap: 20px; }
.catalogue .row { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.catalogue .row-between { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.catalogue .state-label { font: 9px var(--sp-font-mono); letter-spacing: 0.7px; text-transform: uppercase; color: var(--sp-muted-foreground); margin-bottom: 10px; }
.catalogue .control-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.catalogue .progress-label { display: flex; justify-content: space-between; margin-bottom: 10px; font-size: 12px; }
.catalogue .avatar-stack { display: flex; padding-left: 0; }
.catalogue .avatar-stack .sp-avatar + .sp-avatar { margin-left: -7px; }
.catalogue .avatar-stack .sp-avatar { border: 3px solid var(--sp-surface); width: 38px; height: 38px; }
.catalogue .patterns { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.catalogue .course-cover { display: flex; justify-content: space-between; align-items: center; height: 140px; background: var(--sp-lilac); border-radius: 19px 19px 0 0; padding: 24px; color: var(--sp-lilac-foreground); overflow: hidden; }
.catalogue .course-cover svg { width: 120px; height: 120px; transform: rotate(8deg); }
.catalogue .course-cover-text { font-family: var(--sp-font-display); font-size: 28px; line-height: 1.05; }
.catalogue .course-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; font-size: 11px; color: var(--sp-muted-foreground); }
.catalogue .course-card .sp-card-header { padding-bottom: 18px; }
.catalogue .course-card .sp-card-footer { justify-content: space-between; }
.catalogue .quiz-card { padding: 24px; }
.catalogue .quiz-card fieldset { margin: 22px 0 18px; padding: 0; border: 0; }
.catalogue .quiz-card legend { font-size: 20px; font-weight: 700; margin-bottom: 18px; }
.catalogue .quiz-option { display: flex; align-items: center; gap: 12px; min-height: 48px; padding: 10px 14px; border: 1px solid var(--sp-control-border); border-radius: 10px; margin-bottom: 8px; cursor: pointer; font-size: 13px; }
.catalogue .quiz-option:has(:checked) { background: var(--sp-accent); border-color: var(--sp-primary); color: var(--sp-accent-foreground); }
.catalogue .quiz-option input { accent-color: var(--sp-primary); margin: 0; }
.catalogue .table-tools { display: flex; gap: 16px; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.catalogue .table-tools .sp-field { max-width: 270px; width: 100%; }
.catalogue .learner { display: flex; align-items: center; gap: 10px; white-space: nowrap; }
.catalogue .empty-state { text-align: center; padding: 32px; }
.catalogue .empty-state h3 { font-size: 18px; margin: 8px 0; }
.catalogue .code-layout { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 32px; }
.catalogue .code-layout h3 { font: 30px var(--sp-font-display); line-height: 1.2; margin-bottom: 16px; }
.catalogue .code-layout p { color: var(--sp-muted-foreground); font-size: 13px; line-height: 1.8; }
.catalogue .code-card { overflow: hidden; background: var(--sp-surface); }
.catalogue .code-card pre { overflow-x: auto; margin: 0; padding: 22px; font: 12px/1.9 var(--sp-font-mono); tab-size: 2; }
.catalogue .code-card .specimen-head { padding-block: 8px; }
.catalogue footer { display: flex; justify-content: space-between; gap: 16px; border-top: 1px solid var(--sp-border); padding-top: 24px; color: var(--sp-muted-foreground); font-size: 11px; }
.catalogue .toast { position: fixed; bottom: 24px; left: calc(50% + 115px); transform: translateX(-50%); background: var(--sp-foreground); color: var(--sp-background); border-radius: 12px; padding: 14px 22px; font-size: 13px; box-shadow: var(--sp-shadow); max-width: calc(100vw - 32px); z-index: 5; }
.catalogue .toast:empty { display: none; }
@media (min-width: 1500px) { .catalogue .content { padding-top: 60px; } }
@media (max-width: 1100px) {
  .catalogue { --sidebar-width: 190px; }
  .catalogue .sidebar { padding-inline: 16px; }
  .catalogue .content { padding: 32px; }
  .catalogue .topbar { padding-inline: 32px; }
  .catalogue .palette { grid-template-columns: repeat(3, 1fr); }
  .catalogue .hero h1 { font-size: 52px; }
  .catalogue .type-sample { flex-wrap: wrap; gap: 4px; }
  .catalogue .toast { left: calc(50% + 95px); }
}
@media (max-width: 760px) {
  .catalogue .sidebar { position: static; width: auto; padding: 18px 20px; border-right: 0; border-bottom: 1px solid var(--sp-border); }
  .catalogue .sidebar nav { display: flex; gap: 6px; overflow-x: auto; margin-top: 14px; }
  .catalogue .sidebar nav a { white-space: nowrap; font-size: 12px; margin: 0; }
  .catalogue :is(.edition, .nav-label, .nav-number, .sidebar-note) { display: none; }
  .catalogue .main { margin: 0; }
  .catalogue .topbar { padding: 12px 20px; }
  .catalogue .topbar .sp-badge { display: none; }
  .catalogue .content { padding: 30px 20px; }
  .catalogue .hero { grid-template-columns: 1fr 0.55fr; gap: 0; padding-bottom: 30px; }
  .catalogue .hero h1 { font-size: 44px; letter-spacing: -1.5px; }
  .catalogue .hero-art { min-width: 100px; }
  .catalogue .hero-copy { font-size: 13px; }
  .catalogue .hero-links { grid-column: 1 / -1; }
  .catalogue .principles { margin-bottom: 36px; }
  .catalogue .principle { padding: 16px 10px; font-size: 11px; }
  .catalogue .principle strong { font-size: 12px; }
  .catalogue .section-heading { align-items: start; flex-direction: column; gap: 6px; }
  .catalogue :is(.foundation-details, .component-grid, .patterns, .code-layout) { grid-template-columns: 1fr; }
  .catalogue .palette { gap: 8px; }
  .catalogue .swatch-color { height: 65px; }
  .catalogue .swatch-info { padding: 10px; }
  .catalogue .toast { left: 50%; width: max-content; }
  .catalogue footer { flex-direction: column; }
}
@media (max-width: 420px) {
  .catalogue .hero { grid-template-columns: 1fr; }
  .catalogue .hero-art { position: absolute; width: 80px; min-width: 0; right: 0; top: 0; opacity: 0.8; }
  .catalogue .hero h1 { max-width: 280px; }
  .catalogue .control-pair { grid-template-columns: 1fr; }
  .catalogue .table-tools { align-items: start; flex-direction: column; }
}