/* KraftPal Landing — Shared Design System */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700&family=Source+Sans+3:wght@400;500;600&display=swap');

:root {
  --green-deep: #0B5D2A;
  --green-rich: #1D6B3C;
  --green-accent: #A6C62A;
  --kraft-beige: #CDA27A;
  --bg-white: #FFFFFF;
  --bg-warm: #F1F1EE;
  --line-sage: #B8C4B3;
  --text-body: #2A2F2C;
  --text-muted: #5C6560;
  --shadow-soft: 0 1px 3px rgba(11, 93, 42, 0.06);
  --shadow-card: 0 4px 24px rgba(11, 93, 42, 0.07);
  --font-heading: 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-body: 'Source Sans 3', system-ui, sans-serif;
  --max-prose: 42rem;
  --max-wide: 72rem;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --radius: 4px;
  --nav-height: 4.5rem;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--text-body);
  background: var(--bg-white);
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--green-rich); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--green-deep); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--green-deep);
  font-weight: 600;
  line-height: 1.25;
  margin: 0 0 var(--space-md);
}

h1 { font-size: clamp(2.25rem, 5vw, 3.25rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.625rem, 3vw, 2.125rem); letter-spacing: -0.015em; }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p { margin: 0 0 var(--space-md); }
p:last-child { margin-bottom: 0; }

.lead { font-size: 1.25rem; line-height: 1.6; color: var(--text-muted); }

.label {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green-rich);
}

.container { width: min(100% - 2rem, var(--max-wide)); margin-inline: auto; }
.container--prose { width: min(100% - 2rem, var(--max-prose)); margin-inline: auto; }
.section { padding-block: var(--space-xl); }
.section--warm { background: var(--bg-warm); }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-sage);
}

.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--nav-height); gap: var(--space-md);
}

.site-header { position: relative; }

.logo-link { display: flex; align-items: center; text-decoration: none; flex-shrink: 0; }
.logo-wrap { background: var(--green-deep); padding: 0.4rem 0.75rem; border-radius: var(--radius); line-height: 0; }
.logo-wrap img { height: 2rem; width: auto; }

/* ——— Grouped navigation ——— */
.site-nav--grouped { display: flex; align-items: center; gap: 0.25rem; }
.nav-clusters { display: flex; align-items: center; gap: 0.125rem; }
.nav-drawer-sections { display: none; }

.nav-cluster { position: relative; }

.nav-cluster__trigger {
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-family: var(--font-heading); font-size: 0.8125rem; font-weight: 600;
  color: var(--text-body); background: none; border: none; cursor: pointer;
  padding: 0.5rem 0.75rem; border-radius: var(--radius);
  transition: color 0.15s, background 0.15s;
}
.nav-cluster__trigger::after {
  content: ''; width: 0; height: 0;
  border-left: 4px solid transparent; border-right: 4px solid transparent;
  border-top: 4px solid currentColor; opacity: 0.5;
}
.nav-cluster__trigger:hover,
.nav-cluster.is-open .nav-cluster__trigger,
.nav-cluster:has(a.is-active) .nav-cluster__trigger {
  color: var(--green-deep); background: var(--bg-warm);
}

.nav-dropdown {
  display: none; position: absolute; top: calc(100% + 0.35rem); right: 0;
  min-width: 11rem; margin: 0; padding: 0.35rem;
  list-style: none; background: var(--bg-white);
  border: 1px solid var(--line-sage); border-radius: var(--radius);
  box-shadow: var(--shadow-card); z-index: 200;
}
.nav-cluster.is-open .nav-dropdown { display: block; }

.nav-dropdown a {
  display: block; font-family: var(--font-heading); font-size: 0.8125rem; font-weight: 500;
  color: var(--text-body); text-decoration: none; padding: 0.5rem 0.75rem;
  border-radius: var(--radius); white-space: nowrap;
}
.nav-dropdown a:hover { color: var(--green-deep); background: var(--bg-warm); }
.nav-dropdown a.is-active { color: var(--green-deep); font-weight: 600; background: var(--bg-warm); }

.nav-toggle {
  display: none; background: none; border: 1px solid var(--line-sage);
  border-radius: var(--radius); padding: 0.5rem; cursor: pointer; color: var(--green-deep);
  min-width: 44px; min-height: 44px;
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; align-items: center; justify-content: center; }
  .nav-clusters { display: none; }
  .site-nav--grouped {
    display: none; position: absolute; top: var(--nav-height); left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: var(--bg-white); border-bottom: 1px solid var(--line-sage);
    box-shadow: var(--shadow-soft); max-height: calc(100vh - var(--nav-height));
    overflow-y: auto;
  }
  .site-nav--grouped.is-open { display: flex; }
  .nav-drawer-sections { display: block; padding: var(--space-sm); width: 100%; }
  .nav-drawer-section { padding-bottom: var(--space-sm); border-bottom: 1px solid var(--bg-warm); margin-bottom: var(--space-sm); }
  .nav-drawer-section:last-child { border-bottom: none; margin-bottom: 0; }
  .nav-drawer-section__label {
    font-family: var(--font-heading); font-size: 0.6875rem; font-weight: 700;
    letter-spacing: 0.12em; text-transform: uppercase; color: var(--line-sage);
    margin: 0 0 0.35rem; padding: 0 0.75rem;
  }
  .nav-drawer-section__links { list-style: none; margin: 0; padding: 0; }
  .nav-drawer-section__links a {
    display: block; font-family: var(--font-heading); font-size: 0.9375rem; font-weight: 500;
    color: var(--text-body); text-decoration: none; padding: 0.75rem;
    min-height: 44px; border-left: 2px solid transparent; border-radius: 0 var(--radius) var(--radius) 0;
  }
  .nav-drawer-section__links a:hover { color: var(--green-deep); background: var(--bg-warm); }
  .nav-drawer-section__links a.is-active {
    color: var(--green-deep); font-weight: 600;
    border-left-color: var(--green-accent); background: var(--bg-warm);
  }
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--green-accent);
  outline-offset: 2px;
}
.nav-cluster__trigger:focus-visible,
.nav-toggle:focus-visible,
.timeline-entry__toggle:focus-visible,
.faq-item__question:focus-visible { outline-offset: 3px; }

.content-section[id], [id] { scroll-margin-top: calc(var(--nav-height) + 1rem); }

.page-category { margin-bottom: var(--space-sm); }

/* ——— Index hub ——— */
.hub-cluster { padding-block: var(--space-xl); }
.hub-cluster__title {
  font-family: var(--font-heading); font-size: 0.75rem; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--green-rich);
  margin-bottom: var(--space-md);
}
.hub-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
  gap: var(--space-md);
}
.hub-card {
  display: flex; flex-direction: column;
  background: var(--bg-white); border: 1px solid var(--line-sage);
  border-radius: var(--radius); overflow: hidden; text-decoration: none;
  color: inherit; box-shadow: var(--shadow-soft);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.hub-card:hover {
  border-color: var(--green-rich); box-shadow: var(--shadow-card);
  color: inherit;
}
.hub-card__thumb {
  aspect-ratio: 16 / 9; overflow: hidden; background: var(--bg-warm);
  border-bottom: 1px solid var(--line-sage);
}
.hub-card__thumb img { width: 100%; height: 100%; object-fit: cover; }
.hub-card__body { padding: var(--space-md); flex: 1; }
.hub-card__title {
  font-family: var(--font-heading); font-size: 1rem; font-weight: 600;
  color: var(--green-deep); margin: 0 0 0.35rem;
}
.hub-card__desc { font-size: 0.875rem; color: var(--text-muted); margin: 0; line-height: 1.5; }

/* ——— Cluster prev/next ——— */
.cluster-nav {
  padding: var(--space-md) 0;
  border-top: 1px solid var(--line-sage);
  display: flex; justify-content: space-between; gap: var(--space-md); flex-wrap: wrap;
}
.cluster-nav a {
  font-family: var(--font-heading); font-size: 0.8125rem; font-weight: 500;
  text-decoration: none; color: var(--text-muted);
}
.cluster-nav a:hover { color: var(--green-deep); }
.cluster-nav__prev::before { content: '← '; }
.cluster-nav__next::after { content: ' →'; }

/* ——— Footer groups ——— */
.site-footer__groups {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg); width: 100%; margin-bottom: var(--space-md);
}
.site-footer__group-label {
  font-family: var(--font-heading); font-size: 0.6875rem; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--line-sage);
  margin: 0 0 0.5rem;
}
.site-footer__group ul { list-style: none; margin: 0; padding: 0; }
.site-footer__group a {
  display: block; font-family: var(--font-heading); font-size: 0.8125rem;
  font-weight: 500; color: var(--text-muted); text-decoration: none;
  padding: 0.2rem 0;
}
.site-footer__group a:hover { color: var(--green-deep); }
.site-footer__group a.is-active { color: var(--green-deep); font-weight: 600; }
.site-footer__inner { flex-direction: column; align-items: stretch; }
@media (max-width: 768px) {
  .site-footer__groups { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .site-footer__groups { grid-template-columns: 1fr; }
  h1 { font-size: 2rem; }
}

.hero { padding-block: var(--space-2xl) var(--space-xl); }
.hero--split { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-xl); align-items: center; }
.hero__content { max-width: var(--max-prose); }
.hero__image { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-card); border: 1px solid var(--line-sage); }

@media (max-width: 900px) {
  .hero--split { grid-template-columns: 1fr; }
  .hero__image { order: -1; max-height: 18rem; }
  .hero__image img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
  .phase-layout__portrait { max-width: 14rem; margin-top: var(--space-md); }
}

@media (max-width: 480px) {
  .hero { padding-block: var(--space-xl) var(--space-lg); }
  .hero__image { max-height: 14rem; }
}

.pullquote {
  margin: var(--space-lg) 0; padding: var(--space-lg);
  border-left: 3px solid var(--green-accent); background: var(--bg-warm);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.pullquote p {
  font-family: var(--font-heading); font-size: clamp(1.125rem, 2vw, 1.375rem);
  font-weight: 500; line-height: 1.55; color: var(--green-deep); font-style: italic; margin: 0;
}
.pullquote--center {
  border-left: none; border-top: 1px solid var(--line-sage); border-bottom: 1px solid var(--line-sage);
  background: transparent; text-align: center; border-radius: 0; padding-inline: var(--space-md);
}

.editorial-layout { display: grid; grid-template-columns: 11rem 1fr; gap: var(--space-xl); align-items: start; }
.side-rail { position: sticky; top: calc(var(--nav-height) + 1.5rem); padding-top: var(--space-sm); }
.side-rail__list { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line-sage); }
.side-rail__list a {
  display: block; font-family: var(--font-heading); font-size: 0.75rem; font-weight: 500;
  color: var(--text-muted); text-decoration: none; padding: 0.5rem 0 0.5rem 1rem;
  border-left: 2px solid transparent; margin-left: -1px; line-height: 1.4;
}
.side-rail__list a:hover, .side-rail__list a.is-active { color: var(--green-deep); border-left-color: var(--green-accent); }

@media (max-width: 900px) {
  .editorial-layout { grid-template-columns: 1fr; }
  .side-rail { display: none; }
}

.content-section { padding-block: var(--space-lg); border-bottom: 1px solid var(--line-sage); }
.content-section:last-child { border-bottom: none; }
.content-section__number {
  font-family: var(--font-heading); font-size: 0.6875rem; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--green-accent); margin-bottom: var(--space-xs);
}

.journey-timeline {
  margin: var(--space-lg) 0 0;
  padding-left: 2.25rem;
  position: relative;
  border-left: 1px solid var(--line-sage);
}

.journey-timeline__label {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--green-deep);
  margin: 0 0 var(--space-xs);
  position: relative;
}

.journey-timeline__label::before {
  content: '';
  position: absolute;
  left: calc(-2.25rem - 0.375rem);
  top: 0.45rem;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--bg-white);
  border: 2px solid var(--green-rich);
}

.journey-timeline__arrow {
  color: var(--line-sage);
  font-size: 0.875rem;
  text-align: left;
  margin: 0 0 var(--space-sm);
  padding-left: 0;
}

.story-band { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-xl); align-items: center; padding-block: var(--space-xl); }
.story-band--reverse .story-band__visual { order: 2; }
.story-band--reverse .story-band__text { order: 1; }
.story-band__visual img { border-radius: var(--radius); border: 1px solid var(--line-sage); box-shadow: var(--shadow-soft); }

@media (max-width: 768px) {
  .story-band, .story-band--reverse { grid-template-columns: 1fr; }
  .story-band--reverse .story-band__visual, .story-band--reverse .story-band__text { order: unset; }
}

.content-list { margin: var(--space-md) 0; padding-left: 1.25rem; }
.content-list li { margin-bottom: 0.5rem; }
.content-list li::marker { color: var(--green-rich); }

.milestone-strip { display: flex; flex-direction: column; margin: var(--space-lg) 0; }
.milestone-strip__item {
  display: grid; grid-template-columns: 10rem 1fr; gap: var(--space-md);
  padding-block: var(--space-md); border-bottom: 1px solid var(--line-sage);
}
.milestone-strip__year { font-family: var(--font-heading); font-size: 0.875rem; font-weight: 700; color: var(--green-deep); }
.milestone-strip__arrow { grid-column: 1 / -1; text-align: center; color: var(--line-sage); font-size: 0.875rem; }

@media (max-width: 600px) {
  .milestone-strip__item { grid-template-columns: 1fr; }
  .premium-timeline { padding-left: 2.25rem; }
  .timeline-entry__marker { left: -2rem; width: 2rem; height: 2rem; }
  .timeline-entry__arrow { margin-left: -2.25rem; }
  .timeline-entry__toggle {
    width: 100%; justify-content: center;
    padding: 0.75rem; min-height: 44px;
    border: 1px solid var(--line-sage); border-radius: var(--radius);
    text-decoration: none; margin-top: var(--space-sm);
  }
}

.phase-block { padding-block: var(--space-xl); border-top: 1px solid var(--line-sage); }
.phase-label { font-family: var(--font-heading); font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700; color: var(--green-deep); margin-bottom: var(--space-md); }
.phase-layout { display: grid; grid-template-columns: 1fr 18rem; gap: var(--space-xl); align-items: start; }
.phase-layout__portrait { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line-sage); box-shadow: var(--shadow-card); }

@media (max-width: 768px) { .phase-layout { grid-template-columns: 1fr; } }

.premium-timeline { position: relative; padding-left: 3rem; margin-top: var(--space-xl); }
.premium-timeline::before {
  content: ''; position: absolute; left: 1.125rem; top: 0; bottom: 0; width: 1px;
  background: linear-gradient(to bottom, var(--line-sage), var(--green-rich));
}
.timeline-entry { position: relative; margin-bottom: var(--space-lg); }
.timeline-entry__marker {
  position: absolute; left: -2.625rem; top: 0.25rem; width: 2.25rem; height: 2.25rem;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-white); border: 1px solid var(--line-sage); border-radius: var(--radius);
  color: var(--green-rich); box-shadow: var(--shadow-soft);
}
.timeline-entry__marker svg { width: 1.125rem; height: 1.125rem; stroke: currentColor; fill: none; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
.timeline-entry__year {
  font-family: var(--font-heading); font-size: 0.75rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--green-accent); margin-bottom: 0.25rem;
}
.timeline-entry__title { font-family: var(--font-heading); font-size: 1.25rem; font-weight: 600; color: var(--green-deep); margin: 0 0 var(--space-sm); }
.timeline-entry__card { background: var(--bg-white); border: 1px solid var(--line-sage); border-radius: var(--radius); padding: var(--space-md) var(--space-lg); box-shadow: var(--shadow-soft); }
.timeline-entry__toggle {
  display: inline-flex; align-items: center; gap: 0.375rem;
  font-family: var(--font-heading); font-size: 0.8125rem; font-weight: 600;
  color: var(--green-rich); background: none; border: none; padding: 0; cursor: pointer; text-decoration: underline;
}
.timeline-entry__toggle svg { width: 0.875rem; height: 0.875rem; stroke: currentColor; fill: none; stroke-width: 2; transition: transform 0.2s; }
.timeline-entry.is-open .timeline-entry__toggle svg { transform: rotate(180deg); }
.timeline-entry__details { display: none; padding-top: var(--space-md); margin-top: var(--space-md); border-top: 1px solid var(--line-sage); }
.timeline-entry.is-open .timeline-entry__details { display: block; }
.timeline-entry__image { margin-top: var(--space-md); border-radius: var(--radius); border: 1px solid var(--line-sage); overflow: hidden; }
.timeline-entry__arrow { text-align: center; color: var(--line-sage); font-size: 0.875rem; padding: 0.5rem 0; margin-left: -3rem; }

.transition-visual {
  display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: var(--space-sm);
  padding: var(--space-xl); margin-top: var(--space-xl); background: var(--bg-warm);
  border: 1px solid var(--line-sage); border-radius: var(--radius);
}
.transition-visual__node {
  font-family: var(--font-heading); font-size: 0.875rem; font-weight: 600; color: var(--green-deep);
  padding: 0.5rem 1rem; background: var(--bg-white); border: 1px solid var(--line-sage); border-radius: var(--radius);
}
.transition-visual__arrow { color: var(--green-accent); font-size: 1.25rem; }

.key-lessons { margin-top: var(--space-md); padding: var(--space-md); background: var(--bg-warm); border-radius: var(--radius); border: 1px solid var(--line-sage); }
.key-lessons h4 { font-size: 0.8125rem; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: var(--space-sm); }

.site-footer { padding-block: var(--space-lg); border-top: 1px solid var(--line-sage); background: var(--bg-warm); }
.site-footer__inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-md); }
.site-footer__links { display: none; }
.site-footer__copy { font-size: 0.8125rem; color: var(--text-muted); margin: 0; text-align: center; width: 100%; padding-top: var(--space-sm); border-top: 1px solid var(--line-sage); }
.text-center { text-align: center; }

/* ——— Technical editorial (Innovation / Technology) ——— */
.tech-layout { display: grid; grid-template-columns: 1fr 20rem; gap: var(--space-xl); align-items: start; }
.tech-layout__aside { position: sticky; top: calc(var(--nav-height) + 1rem); }
.tech-layout__aside img { border-radius: var(--radius); border: 1px solid var(--line-sage); box-shadow: var(--shadow-soft); }
@media (max-width: 900px) { .tech-layout { grid-template-columns: 1fr; } .tech-layout__aside { position: static; max-width: 20rem; } }

.spec-block { margin-block: var(--space-lg); padding-left: var(--space-md); border-left: 2px solid var(--line-sage); }
.spec-block h3 { margin-top: var(--space-lg); }
.spec-block h3:first-child { margin-top: 0; }

.spec-list { list-style: none; margin: var(--space-md) 0; padding: 0; }
.spec-list li {
  padding: 0.375rem 0 0.375rem var(--space-md);
  border-left: 2px solid var(--bg-warm);
  margin-bottom: 0.25rem;
  font-size: 0.9375rem;
}
.spec-list li:hover { border-left-color: var(--green-accent); }

/* ——— Awards ——— */
.award-card {
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  background: var(--bg-white);
  border: 1px solid var(--line-sage);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}
.award-card__org { font-size: 0.8125rem; color: var(--text-muted); margin-bottom: var(--space-xs); }
.award-feature { display: grid; grid-template-columns: 14rem 1fr; gap: var(--space-xl); align-items: start; }
.award-feature__image { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line-sage); box-shadow: var(--shadow-card); }
@media (max-width: 768px) { .award-feature { grid-template-columns: 1fr; } }

/* ——— Global / Country grid ——— */
.country-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(9rem, 1fr));
  gap: 0.5rem 1.5rem;
  margin: var(--space-md) 0;
  list-style: none;
  padding: var(--space-md);
  background: var(--bg-warm);
  border: 1px solid var(--line-sage);
  border-radius: var(--radius);
}
.country-grid li { font-family: var(--font-heading); font-size: 0.875rem; font-weight: 500; color: var(--green-deep); }
@media (max-width: 480px) {
  .country-grid { grid-template-columns: 1fr; }
}

.editorial-image {
  width: 100%;
  max-height: 16rem;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line-sage);
  margin: var(--space-lg) 0;
}

/* ——— Archive ——— */
.archive-chapter {
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
  background: var(--bg-white);
  border: 1px solid var(--line-sage);
  border-radius: var(--radius);
}
.archive-chapter h2 { font-size: 1.375rem; margin-bottom: var(--space-sm); }
.archive-chapter img {
  width: 100%;
  max-width: 100%;
  border-radius: var(--radius);
  margin-bottom: var(--space-md);
  border: 1px solid var(--line-sage);
}
.archive-chapter__meta { margin-top: var(--space-md); }
.archive-chapter__meta .label { display: block; margin-bottom: var(--space-xs); }
.archive-meta-list { list-style: none; margin: 0; padding: 0; }
.archive-meta-list li {
  font-size: 0.875rem; color: var(--text-muted);
  padding: 0.25rem 0; border-bottom: 1px solid var(--bg-warm);
}
@media (max-width: 480px) {
  .archive-chapter { padding: var(--space-md); }
  .archive-meta-list li { font-size: 0.9375rem; padding: 0.375rem 0; }
}
.archive-meta-list li::before { content: '— '; color: var(--line-sage); }
.archive-example {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  background: var(--bg-warm);
  border-left: 3px solid var(--kraft-beige);
  border-radius: 0 var(--radius) var(--radius) 0;
}

/* ——— Lessons ——— */
.lesson-entry {
  padding-block: var(--space-lg);
  border-bottom: 1px solid var(--line-sage);
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: var(--space-md);
}
.lesson-entry:last-child { border-bottom: none; }
.lesson-entry__num {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--green-accent);
  padding-top: 0.25rem;
}
.lesson-entry h2 { font-size: 1.25rem; margin-bottom: var(--space-sm); }

/* ——— Sustainability ——— */
.typo-stack { margin: var(--space-md) 0 var(--space-lg); }
.typo-stack p {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--green-deep);
  margin: 0.25rem 0;
  padding-left: var(--space-md);
  border-left: 2px solid var(--line-sage);
}

.evolution-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: var(--space-xl) var(--space-md);
  margin-top: var(--space-xl);
  background: var(--bg-warm);
  border: 1px solid var(--line-sage);
  border-radius: var(--radius);
}
.evolution-strip__node {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--green-deep);
  padding: 0.375rem 0.75rem;
  background: var(--bg-white);
  border: 1px solid var(--line-sage);
  border-radius: var(--radius);
}
.evolution-strip__arrow { color: var(--line-sage); font-size: 0.875rem; }

/* ——— FAQ ——— */
.faq-list { margin-top: var(--space-lg); }
.faq-item { border-bottom: 1px solid var(--line-sage); }
.faq-item__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  min-height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--green-deep);
}
.faq-item__question svg {
  flex-shrink: 0;
  width: 1rem; height: 1rem;
  stroke: var(--green-rich);
  fill: none;
  stroke-width: 2;
  transition: transform 0.2s;
}
.faq-item.is-open .faq-item__question svg { transform: rotate(180deg); }
.faq-item__answer { display: none; padding-bottom: var(--space-md); }
.faq-item.is-open .faq-item__answer { display: block; }

.principles-block {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  background: var(--bg-warm);
  border: 1px solid var(--line-sage);
  border-radius: var(--radius);
}