/* =========================================================
   Zero Stray Pawject — Global Styles
   Font: Montserrat (Google Fonts)
   ========================================================= */

:root {
  --teal: #5CACB5;
  --teal-dark: #4A959E;
  --teal-soft: #DDEEF0;
  --black: #0A0A0A;
  --ink: #161616;
  --white: #FFFFFF;
  --gray-bg: #F4F5F5;
  --gray-line: rgba(10, 10, 10, 0.12);
  --gray-line-light: rgba(255, 255, 255, 0.14);
  --text-muted: rgba(10, 10, 10, 0.62);
  --text-muted-light: rgba(255, 255, 255, 0.66);
  --font: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  --container: 1200px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--black);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
ul { list-style: none; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; background: none; border: none; color: inherit; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}
.container.narrow { max-width: 860px; }
.center { text-align: center; }

/* ---------- Typography ---------- */
h1, h2, h3 { font-weight: 800; text-transform: uppercase; line-height: 1.08; letter-spacing: -0.01em; }

h1 { font-size: clamp(2.6rem, 6vw, 4.5rem); }
h2 { font-size: clamp(1.9rem, 4vw, 3rem); margin-bottom: 28px; }

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 18px;
}
.kicker::before {
  content: '';
  width: 28px;
  height: 2px;
  background: var(--teal);
}
.kicker-dark { color: var(--black); }
.kicker-dark::before { background: var(--black); }

.hl {
  background: var(--teal);
  color: var(--black);
  padding: 0 0.18em;
  display: inline-block;
}
.teal-text { color: var(--teal); }

.lead {
  font-size: 1.05rem;
  max-width: 620px;
  margin-bottom: 36px;
}
.copy p { margin-bottom: 18px; max-width: 760px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: 1.5px solid transparent;
  transition: all 0.3s var(--ease);
  white-space: nowrap;
}
.btn-teal { background: var(--teal); color: var(--black); }
.btn-teal:hover { background: var(--teal-dark); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(92, 172, 181, 0.35); }
.btn-dark { background: var(--black); color: var(--white); }
.btn-dark:hover { background: #2a2a2a; transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0, 0, 0, 0.25); }
.btn-light { background: var(--white); color: var(--black); }
.btn-light:hover { background: var(--teal); transform: translateY(-2px); }
.btn-outline-light { border-color: rgba(255, 255, 255, 0.5); color: var(--white); }
.btn-outline-light:hover { border-color: var(--white); background: rgba(255, 255, 255, 0.1); transform: translateY(-2px); }
.btn-outline-dark { border-color: rgba(10, 10, 10, 0.5); color: var(--black); }
.btn-outline-dark:hover { border-color: var(--black); background: rgba(10, 10, 10, 0.07); transform: translateY(-2px); }
.btn-sm { padding: 10px 22px; }
.btn-block { width: 100%; }
.btn-icon svg { flex-shrink: 0; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  transition: gap 0.3s var(--ease);
}
.link-arrow:hover { gap: 14px; }

.text-link {
  color: var(--teal);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.25s;
}
.text-link:hover { color: var(--teal-dark); }

.see-all { margin-top: 36px; text-align: right; }

/* ---------- Sections ---------- */
.section { padding: 110px 0; }
.section-dark { background: var(--black); color: var(--white); }
.section-dark .lead, .section-dark .copy p { color: var(--text-muted-light); }
.section-gray { background: var(--gray-bg); }
.section-teal { background: var(--teal); color: var(--black); }

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background 0.3s, box-shadow 0.3s, transform 0.4s var(--ease);
}
.site-header.scrolled { background: rgba(10, 10, 10, 0.97); box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35); }
.site-header.hidden { transform: translateY(-100%); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo-box {
  background: var(--white);
  padding: 7px 12px;
  display: flex;
  align-items: center;
}
.logo-box img { height: 30px; width: auto; }

.main-nav { display: flex; align-items: center; gap: 36px; }
.main-nav ul { display: flex; gap: 28px; }
.main-nav ul a {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-muted-light);
  transition: color 0.25s;
  position: relative;
  padding: 6px 0;
}
.main-nav ul a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--teal);
  transition: width 0.3s var(--ease);
}
.main-nav ul a:hover { color: var(--white); }
.main-nav ul a:hover::after { width: 100%; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: 110;
}
.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--white);
  transition: transform 0.3s var(--ease), opacity 0.3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =========================================================
   HERO (index)
   ========================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--black);
  color: var(--white);
  overflow: hidden;
  padding: 140px 0 100px;
}
.hero-bg { position: absolute; inset: 0; }
.hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.55;
  animation: heroZoom 14s var(--ease) forwards;
}
@keyframes heroZoom {
  from { transform: scale(1.12); }
  to { transform: scale(1); }
}
.hero-bg::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(10,10,10,0.92) 0%, rgba(10,10,10,0.72) 45%, rgba(10,10,10,0.25) 100%);
}
.hero-content { position: relative; z-index: 2; max-width: var(--container); width: 100%; }
.hero h1 { margin-bottom: 26px; }
.hero-sub {
  max-width: 460px;
  font-size: 1rem;
  color: var(--text-muted-light);
  margin-bottom: 42px;
}

.hero-stats {
  display: flex;
  gap: 56px;
  padding: 26px 0;
  border-top: 1px solid var(--gray-line-light);
  border-bottom: 1px solid var(--gray-line-light);
  margin-bottom: 40px;
  max-width: 620px;
  position: relative;
}
.hero-stat { display: flex; flex-direction: column; }
.hero-stat-label {
  position: absolute;
  top: -10px; left: 0;
  background: var(--black);
  padding-right: 14px;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--teal);
}
.hero-stat-num { font-size: 2rem; font-weight: 800; color: var(--teal); line-height: 1.1; }
.hero-stat-cap {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted-light);
  margin-top: 4px;
}
.hero-actions { display: flex; gap: 16px; }

.hero-scroll {
  position: absolute;
  bottom: 28px; left: 50%;
  transform: translateX(-50%);
  width: 24px; height: 38px;
  border: 1.5px solid rgba(255,255,255,0.4);
  border-radius: 12px;
  z-index: 2;
}
.hero-scroll span {
  position: absolute;
  top: 7px; left: 50%;
  width: 3px; height: 8px;
  margin-left: -1.5px;
  background: var(--teal);
  border-radius: 2px;
  animation: scrollHint 1.8s ease-in-out infinite;
}
@keyframes scrollHint {
  0%, 100% { transform: translateY(0); opacity: 1; }
  60% { transform: translateY(12px); opacity: 0; }
}

/* =========================================================
   PAGE HERO (challenge)
   ========================================================= */
.page-hero {
  position: relative;
  background: var(--black);
  color: var(--white);
  padding-top: 72px;
}
.page-hero-bg { height: 320px; overflow: hidden; position: relative; }
.page-hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.8;
  animation: heroZoom 12s var(--ease) forwards;
}
.page-hero-bg::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, rgba(10,10,10,0.1) 30%, rgba(10,10,10,0.96) 100%);
}
.page-hero-content { position: relative; padding: 0 32px 80px; margin-top: -90px; z-index: 2; }
.page-hero-content h1 { margin-bottom: 24px; }
.page-hero-content p { max-width: 520px; color: var(--text-muted-light); }

/* =========================================================
   TESTIMONIALS
   ========================================================= */
.testimonials { padding-top: 90px; }
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 36px;
}
.carousel-arrows { display: flex; gap: 10px; }
.arrow-btn {
  width: 42px; height: 42px;
  border: 1.5px solid var(--gray-line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--black);
  transition: all 0.3s var(--ease);
}
.arrow-btn:hover { background: var(--teal); border-color: var(--teal); }
.arrow-btn:disabled { opacity: 0.3; cursor: default; }
.arrow-btn:disabled:hover { background: none; border-color: var(--gray-line); }

.testimonial-track-wrap { overflow: hidden; }
.testimonial-track {
  display: flex;
  gap: 24px;
  transition: transform 0.6s var(--ease);
}
.testimonial-card {
  flex: 0 0 calc((100% - 48px) / 3);
  border: 1.5px solid var(--gray-line);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 280px;
  transition: border-color 0.3s, transform 0.3s var(--ease), box-shadow 0.3s;
}
.testimonial-card:hover {
  border-color: var(--teal);
  transform: translateY(-6px);
  box-shadow: 0 18px 40px rgba(10, 10, 10, 0.08);
}
.testimonial-card p {
  font-size: 1.02rem;
  font-weight: 600;
  font-style: italic;
  line-height: 1.5;
  margin-bottom: 28px;
}
.testimonial-card cite {
  display: block;
  font-style: normal;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 4px;
}
.testimonial-card footer span { font-size: 0.8rem; color: var(--text-muted); }

/* =========================================================
   CRISIS (02)
   ========================================================= */
.crisis-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 48px;
  margin-top: 44px;
  align-items: stretch;
}
.crisis-media { position: relative; overflow: hidden; }
.crisis-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease);
}
.crisis-media:hover img { transform: scale(1.04); }
.crisis-media figcaption {
  position: absolute;
  left: 0; bottom: 0;
  background: var(--teal);
  color: var(--black);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 10px 18px;
}
.crisis-panel { display: flex; flex-direction: column; }
.crisis-list { flex: 1; margin-bottom: 28px; }
.crisis-list li { border-bottom: 1px solid var(--gray-line-light); }
.crisis-list li:first-child { border-top: 1px solid var(--gray-line-light); }
.crisis-list button {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  text-align: left;
  padding: 20px 14px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted-light);
  transition: color 0.3s, background 0.3s, padding-left 0.3s var(--ease);
}
.crisis-list button::before {
  content: '';
  width: 7px; height: 7px;
  border-top: 1.5px solid currentColor;
  border-right: 1.5px solid currentColor;
  transform: rotate(45deg);
  flex-shrink: 0;
  transition: border-color 0.3s;
}
.crisis-list li:hover button { color: var(--white); padding-left: 22px; }
.crisis-list li.active button {
  background: var(--teal);
  color: var(--black);
  padding-left: 22px;
}
.crisis-note {
  margin-top: 44px;
  max-width: 720px;
  color: var(--text-muted-light);
  font-size: 0.95rem;
  border-left: 2px solid var(--teal);
  padding-left: 22px;
}

/* =========================================================
   ROOT CAUSE (03)
   ========================================================= */
.root-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  margin-top: 44px;
  align-items: start;
}
.chart-card {
  border: 1.5px solid var(--gray-line);
  padding: 36px 32px 26px;
}
.chart-card h3 { font-size: 0.95rem; letter-spacing: 0.06em; }
.chart-sub { font-size: 0.72rem; color: var(--text-muted); margin: 4px 0 34px; }

.bar-chart {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
  height: 220px;
  border-bottom: 1.5px solid var(--gray-line);
  padding: 0 6px;
}
.bar-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  height: 100%;
  gap: 0;
  position: relative;
}
.bar {
  width: 100%;
  max-width: 58px;
  height: 0;
  position: relative;
  transition: height 1.2s var(--ease);
}
.bar-dark { background: var(--black); }
.bar-teal { background: var(--teal); }
.bar span {
  position: absolute;
  top: -24px; left: 50%;
  transform: translateX(-50%);
  font-size: 0.72rem;
  font-weight: 700;
  opacity: 0;
  transition: opacity 0.5s 0.8s;
}
.bar-chart.animated .bar span { opacity: 1; }
.bar-col label {
  position: absolute;
  bottom: -26px;
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
}
.chart-legend {
  display: flex;
  gap: 24px;
  margin-top: 44px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.chart-legend span { display: inline-flex; align-items: center; gap: 8px; }
.dot { width: 10px; height: 10px; display: inline-block; }
.dot-dark { background: var(--black); }
.dot-teal { background: var(--teal); }
.dot-darkcell { background: #2e2e2e; border: 1px solid var(--gray-line-light); }
.chart-foot { font-size: 0.66rem; color: var(--text-muted); margin-top: 14px; }

.root-copy p { margin-bottom: 22px; font-size: 1.02rem; }
.root-copy .btn { margin-top: 14px; }

/* =========================================================
   MODEL (04)
   ========================================================= */
.model-intro {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 56px;
  align-items: start;
  margin-bottom: 56px;
}
.model-intro > p { color: var(--text-muted-light); font-size: 1.02rem; }
.model-quote { border-left: 2px solid var(--teal); padding-left: 24px; }
.model-quote p { font-size: 1.15rem; font-weight: 600; font-style: italic; margin-bottom: 8px; }
.model-quote span { font-size: 0.74rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted-light); }

.model-diagram {
  border: 1px solid var(--gray-line-light);
  padding: 28px;
  margin-bottom: 48px;
}
.diagram-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 18px;
}
.diagram-cols span {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted-light);
  border-bottom: 1px solid var(--gray-line-light);
  padding-bottom: 12px;
}
.diagram-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}
.d-cell {
  aspect-ratio: 1.15;
  display: flex;
  align-items: flex-end;
  padding: 12px;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1.35;
  transition: transform 0.3s var(--ease), box-shadow 0.3s;
  cursor: default;
}
.d-cell.teal { background: var(--teal); color: var(--black); }
.d-cell.dark { background: #1f1f1f; color: var(--text-muted-light); border: 1px solid var(--gray-line-light); }
.d-cell:hover { transform: translateY(-4px); box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4); }
.diagram-legend {
  display: flex;
  gap: 28px;
  margin-top: 22px;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted-light);
}
.diagram-legend span { display: inline-flex; align-items: center; gap: 8px; }

/* Tabs */
.tab-bar {
  display: flex;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--gray-line-light);
}
.tab {
  padding: 14px 20px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted-light);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.3s, background 0.3s;
}
.tab:hover { color: var(--white); }
.tab.active { background: var(--teal); color: var(--black); }

.tab-panels { border: 1px solid var(--gray-line-light); border-top: none; padding: 40px 36px; }
.tab-panel { display: none; animation: fadeUp 0.5s var(--ease); }
.tab-panel.active { display: block; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
.tab-panel-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 48px;
}
.tab-panel h4 {
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.tab-panel h5 {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 14px;
}
.tab-panel p { color: var(--text-muted-light); font-size: 0.94rem; }
.check-list li {
  position: relative;
  padding: 6px 0 6px 26px;
  font-size: 0.88rem;
  color: var(--text-muted-light);
}
.check-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 13px;
  width: 10px; height: 5px;
  border-left: 2px solid var(--teal);
  border-bottom: 2px solid var(--teal);
  transform: rotate(-45deg);
}

/* =========================================================
   CASE STUDIES (05)
   ========================================================= */
.case-filters {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 8px 0 40px;
  flex-wrap: wrap;
}
.case-filter {
  padding: 10px 20px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: 1.5px solid var(--gray-line);
  color: var(--text-muted);
  transition: all 0.3s;
}
.case-filter:hover { border-color: var(--black); color: var(--black); }
.case-filter.active { background: var(--black); border-color: var(--black); color: var(--white); }
.case-filters .text-link { margin-left: auto; font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.1em; }

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.case-card {
  background: var(--white);
  padding: 40px 32px;
  border: 1.5px solid transparent;
  transition: border-color 0.3s, transform 0.3s var(--ease), box-shadow 0.3s;
}
.case-card:hover {
  border-color: var(--teal);
  transform: translateY(-6px);
  box-shadow: 0 20px 44px rgba(10, 10, 10, 0.1);
}
.case-card h3 { font-size: 2rem; }
.case-card .case-sub {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.case-card hr { border: none; border-top: 1.5px solid var(--gray-line); margin: 22px 0; }
.case-card h4 {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 12px;
}
.case-card p { font-size: 0.9rem; color: var(--text-muted); }

/* =========================================================
   EDUCATION (06)
   ========================================================= */
.edu-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 56px;
  margin-top: 44px;
  align-items: start;
}

/* Accordion (shared) */
.acc-item { border-bottom: 1px solid var(--gray-line); }
.acc-item:first-child { border-top: 1px solid var(--gray-line); }
.acc-head {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 8px;
  text-align: left;
  transition: padding-left 0.3s var(--ease);
}
.acc-head:hover { padding-left: 14px; }
.acc-icon {
  width: 36px; height: 36px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--teal);
  color: var(--teal);
  font-weight: 800;
  font-size: 0.85rem;
  transition: all 0.3s;
}
.acc-item.open .acc-icon { background: var(--teal); color: var(--black); }
.acc-title {
  flex: 1;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.acc-chevron { flex-shrink: 0; opacity: 0.45; transition: transform 0.35s var(--ease); }
.acc-item.open .acc-chevron { transform: rotate(180deg); }
.acc-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s var(--ease);
}
.acc-body p {
  padding: 0 8px 22px 60px;
  font-size: 0.92rem;
  color: var(--text-muted);
}
.edu-accordion .btn { margin-top: 32px; }

/* Dark / light page accordions (challenge page) */
.dark-accordion, .light-accordion { margin-bottom: 40px; }
.dark-accordion .acc-item { border-color: var(--gray-line-light); }
.dark-accordion .acc-body p { color: var(--text-muted-light); padding-left: 8px; }
.light-accordion .acc-body p { padding-left: 8px; }
.dark-accordion .acc-item.open .acc-title,
.light-accordion .acc-item.open .acc-title { color: var(--teal); }
.dark-accordion .acc-item.open .acc-head,
.light-accordion .acc-item.open .acc-head { border-left: 3px solid var(--teal); padding-left: 16px; }

/* Edu carousel */
.edu-media { position: relative; }
.edu-carousel { position: relative; overflow: hidden; aspect-ratio: 4 / 3; background: var(--black); }
.edu-slide {
  position: absolute; inset: 0;
  opacity: 0;
  transform: scale(1.03);
  transition: opacity 0.7s var(--ease), transform 0.9s var(--ease);
}
.edu-slide.active { opacity: 1; transform: scale(1); z-index: 1; }
.edu-slide img { width: 100%; height: 100%; object-fit: cover; }
.edu-caption {
  position: absolute;
  left: 0; bottom: 0;
  background: var(--black);
  color: var(--white);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 10px 18px;
}
.edu-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 18px;
}
.edu-dots button {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--gray-line);
  transition: all 0.3s;
}
.edu-dots button.active { background: var(--teal); transform: scale(1.35); }

/* =========================================================
   IMPACT (07)
   ========================================================= */
.impact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin: 48px 0;
}
.impact-card {
  border: 1px solid var(--gray-line-light);
  padding: 36px 28px;
  transition: border-color 0.3s, transform 0.3s var(--ease), background 0.3s;
}
.impact-card:hover { border-color: var(--teal); transform: translateY(-6px); background: rgba(92, 172, 181, 0.05); }
.impact-num { font-size: 3rem; font-weight: 800; color: var(--white); line-height: 1; display: block; }
.impact-label {
  display: block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  margin: 14px 0 16px;
}
.impact-card p { font-size: 0.84rem; color: var(--text-muted-light); }

/* =========================================================
   PARTNERS (10)
   ========================================================= */
.partner-groups {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px 48px;
  margin-top: 44px;
}
.partner-group h3 {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
  border-bottom: 1.5px solid var(--gray-line);
  padding-bottom: 12px;
  margin-bottom: 24px;
}
.logo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.logo-grid figure {
  border: 1.5px solid var(--gray-line);
  padding: 22px 16px 16px;
  text-align: center;
  transition: border-color 0.3s, transform 0.3s var(--ease), box-shadow 0.3s;
}
.logo-grid figure:hover {
  border-color: var(--teal);
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(10, 10, 10, 0.08);
}
.logo-grid img {
  height: 84px;
  width: auto;
  margin: 0 auto 14px;
  filter: grayscale(1);
  opacity: 0.75;
  transition: filter 0.4s, opacity 0.4s;
}
.logo-grid figure:hover img { filter: grayscale(0); opacity: 1; }
.logo-grid figcaption {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.partner-note {
  font-size: 0.74rem;
  color: var(--text-muted);
  text-align: center;
  margin: 44px 0 28px;
}

/* =========================================================
   VISION (11)
   ========================================================= */
.vision-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 64px;
  align-items: center;
}
.vision-copy h2 { margin-bottom: 24px; }
.vision-copy p { font-size: 0.98rem; margin-bottom: 28px; max-width: 540px; }
.vision-copy blockquote {
  font-size: 1.05rem;
  font-weight: 600;
  font-style: italic;
  border-left: 3px solid var(--black);
  padding-left: 22px;
  max-width: 480px;
}
.vision-media { overflow: hidden; }
.vision-media img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  transition: transform 0.8s var(--ease);
}
.vision-media:hover img { transform: scale(1.05); }

/* =========================================================
   CTA BAND (challenge)
   ========================================================= */
.cta-band { padding: 90px 0; }
.cta-band p { max-width: 540px; margin: 0 auto 36px; font-weight: 500; }
.cta-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.cta-band .cta-actions { justify-content: center; }
.approach .cta-actions { margin-top: 12px; }

/* =========================================================
   IMAGE BREAK
   ========================================================= */
.img-break { max-height: 560px; overflow: hidden; }
.img-break img {
  width: 100%;
  height: 100%;
  max-height: 560px;
  object-fit: cover;
  transform: scale(1.06);
  transition: transform 1.4s var(--ease);
}
.img-break.in-view img { transform: scale(1); }

/* =========================================================
   CONTACT
   ========================================================= */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 72px;
  align-items: start;
}
.contact-copy h2 { margin-bottom: 22px; }
.contact-copy p { color: var(--text-muted-light); margin-bottom: 30px; max-width: 420px; }
.contact-copy blockquote {
  font-style: italic;
  font-weight: 600;
  color: var(--teal);
  border-left: 3px solid var(--teal);
  padding-left: 22px;
  max-width: 400px;
}
.contact-light { background: var(--white); color: var(--black); }
.contact-light .contact-copy p { color: var(--text-muted); }

.contact-form {
  background: var(--white);
  color: var(--black);
  padding: 44px 40px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.3);
}
.contact-light .contact-form { box-shadow: 0 24px 60px rgba(10, 10, 10, 0.12); border: 1.5px solid var(--gray-line); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-field { margin-bottom: 18px; }
.form-field label {
  display: block;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.form-field label span { color: var(--teal); }
.form-field input,
.form-field textarea {
  width: 100%;
  font-family: inherit;
  font-size: 0.88rem;
  padding: 12px 14px;
  border: 1.5px solid var(--gray-line);
  background: var(--white);
  color: var(--black);
  transition: border-color 0.3s, box-shadow 0.3s;
  resize: vertical;
}
.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(92, 172, 181, 0.2);
}
.form-field input.error,
.form-field textarea.error { border-color: #d05050; }
.form-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 14px;
  cursor: pointer;
}
.form-check input { margin-top: 3px; accent-color: var(--teal); }
.contact-form .btn { margin-top: 12px; }
.contact .contact-form .btn-light { background: var(--black); color: var(--white); }
.contact .contact-form .btn-light:hover { background: var(--teal); color: var(--black); }
.form-status { font-size: 0.8rem; margin-top: 14px; font-weight: 600; }
.form-status.ok { color: var(--teal-dark); }
.form-status.err { color: #d05050; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  background: var(--black);
  color: var(--white);
  border-top: 1px solid var(--gray-line-light);
  padding: 72px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  padding-bottom: 56px;
}
.footer-col h4 {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 18px;
}
.footer-col li { margin-bottom: 10px; }
.footer-col a {
  font-size: 0.84rem;
  color: var(--text-muted-light);
  transition: color 0.25s, padding-left 0.25s;
}
.footer-col a:hover { color: var(--white); padding-left: 4px; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--gray-line-light);
  padding-top: 22px;
  padding-bottom: 22px;
  font-size: 0.72rem;
  color: var(--text-muted-light);
  flex-wrap: wrap;
  gap: 12px;
}
.footer-legal { display: flex; gap: 22px; }
.footer-legal a { transition: color 0.25s; }
.footer-legal a:hover { color: var(--white); }

/* =========================================================
   SCROLL REVEAL
   ========================================================= */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.in-view { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1024px) {
  .section { padding: 84px 0; }
  .crisis-grid, .root-grid, .edu-grid { grid-template-columns: 1fr; gap: 40px; }
  .model-intro { grid-template-columns: 1fr; gap: 32px; }
  .diagram-grid { grid-template-columns: repeat(3, 1fr); }
  .diagram-cols { grid-template-columns: 1fr; gap: 8px; margin-bottom: 14px; }
  .impact-grid { grid-template-columns: repeat(2, 1fr); }
  .vision-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .partner-groups { grid-template-columns: 1fr; gap: 44px; }
  .testimonial-card { flex: 0 0 calc((100% - 24px) / 2); }
  .tab-panel-grid { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 768px) {
  .container { padding: 0 22px; }
  .section { padding: 68px 0; }

  /* Mobile nav */
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    inset: 0;
    background: var(--black);
    flex-direction: column;
    justify-content: center;
    gap: 28px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s var(--ease), visibility 0.35s;
    z-index: 105;
  }
  .main-nav.open { opacity: 1; visibility: visible; }
  .main-nav ul { flex-direction: column; align-items: center; gap: 22px; }
  .main-nav ul a { font-size: 1.05rem; color: var(--white); }
  .nav-cta { margin-top: 8px; }

  .hero { min-height: auto; padding: 130px 0 90px; }
  .hero-stats { flex-wrap: wrap; gap: 24px 36px; }
  .hero-actions { flex-direction: column; align-items: stretch; max-width: 320px; }
  .hero-scroll { display: none; }

  .page-hero-bg { height: 240px; }
  .page-hero-content { margin-top: -60px; padding-bottom: 60px; }

  .testimonial-card { flex: 0 0 100%; }
  .section-head { flex-wrap: wrap; gap: 16px; }

  .diagram-grid { grid-template-columns: repeat(2, 1fr); }
  .tab-bar { flex-direction: column; border: 1px solid var(--gray-line-light); border-bottom: none; }
  .tab { text-align: left; border-bottom: 1px solid var(--gray-line-light); margin-bottom: 0; }
  .tab-panels { padding: 28px 22px; }

  .case-grid { grid-template-columns: 1fr; }
  .case-filters .text-link { margin-left: 0; width: 100%; }

  .impact-grid { grid-template-columns: 1fr; gap: 16px; }
  .logo-grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .logo-grid img { height: 60px; }

  .form-row { grid-template-columns: 1fr; gap: 0; }
  .contact-form { padding: 32px 24px; }

  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 20px; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .see-all { text-align: left; }
  .acc-body p { padding-left: 8px; }
  .bar-chart { gap: 8px; }
  .bar-col label { font-size: 0.52rem; }
}

@media (max-width: 480px) {
  h1 { font-size: 2.3rem; }
  h2 { font-size: 1.65rem; }
  .hero-stat-num { font-size: 1.6rem; }
  .hero-stats { gap: 18px 28px; }
  .btn { padding: 13px 24px; }
  .logo-grid { grid-template-columns: repeat(2, 1fr); }
  .diagram-grid { gap: 8px; }
  .d-cell { font-size: 0.56rem; padding: 8px; }
  .impact-num { font-size: 2.4rem; }
  .chart-card { padding: 26px 18px 20px; }
  .cta-actions { flex-direction: column; }
  .cta-band .cta-actions { align-items: center; }
}