:root {
  --brand: #3DCD58;
  --brand-dark: #22a83d;
  --ink: #111827;
  --ink-soft: #243244;
  --muted: #667085;
  --line: #E5E7EB;
  --paper: #FFFFFF;
  --mist: #F6F8FA;
  --charcoal: #0B1220;
  --radius: 24px;
  --shadow: 0 24px 70px rgba(17, 24, 39, 0.12);
  --container: min(1180px, calc(100vw - 40px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, "Noto Sans", "Helvetica Neue", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }

.skip-link {
  position: absolute;
  top: -42px;
  left: 20px;
  z-index: 999;
  padding: 10px 14px;
  background: var(--brand);
  color: var(--ink);
  border-radius: 999px;
  font-weight: 800;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 14px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.86);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(229,231,235,0.75);
}
.header-inner {
  width: var(--container);
  margin: 0 auto;
  min-height: 78px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.logo-link { display: inline-flex; align-items: center; flex: 0 0 auto; }
.logo-link img { width: 230px; height: auto; }
.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--ink-soft);
  font-weight: 700;
  font-size: 14px;
}
.nav-link { position: relative; padding: 8px 0; }
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 3px;
  width: 0;
  height: 2px;
  border-radius: 4px;
  background: var(--brand);
  transition: width 0.2s ease;
}
.nav-link:hover::after { width: 100%; }
.language-switcher {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 10px;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
}
.lang-button {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 7px 10px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 12px;
  cursor: pointer;
}
.lang-button.is-active {
  background: var(--ink);
  color: #fff;
}
.mobile-menu-button {
  display: none;
  margin-left: auto;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 10px 14px;
  font-weight: 800;
  cursor: pointer;
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 760px;
  background:
    radial-gradient(circle at 18% 12%, rgba(61,205,88,0.16), transparent 34%),
    radial-gradient(circle at 85% 10%, rgba(17,24,39,0.12), transparent 28%),
    linear-gradient(180deg, #FFFFFF 0%, #F7FAF8 100%);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("../img/eco-grid.svg");
  background-size: cover;
  background-position: center;
  opacity: 0.65;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.75fr);
  align-items: center;
  gap: 54px;
  padding: 92px 0 76px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--brand-dark);
  font-size: 13px;
  line-height: 1.35;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 900;
}
.eyebrow::before {
  content: "";
  width: 34px;
  height: 2px;
  background: var(--brand);
  border-radius: 99px;
}
.hero h1 {
  margin: 20px 0 22px;
  font-size: clamp(44px, 6.5vw, 82px);
  line-height: 0.98;
  letter-spacing: -0.07em;
  max-width: 900px;
}
.hero-lead {
  max-width: 760px;
  font-size: clamp(17px, 2vw, 21px);
  color: var(--ink-soft);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  border-radius: 999px;
  padding: 13px 19px;
  font-weight: 900;
  border: 1px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--brand);
  color: var(--ink);
  box-shadow: 0 14px 30px rgba(61,205,88,0.28);
}
.btn-secondary {
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
}
.hero-note {
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
  max-width: 800px;
}
.hero-visual {
  justify-self: center;
  width: min(390px, 100%);
}
.hero-logo-card {
  position: relative;
  overflow: hidden;
  background: rgba(255,255,255,0.82);
  border: 1px solid rgba(255,255,255,0.92);
  border-radius: 36px;
  padding: 32px;
  box-shadow: var(--shadow);
}
.hero-logo-card::after {
  content: "";
  position: absolute;
  inset: auto -40px -70px auto;
  width: 240px;
  height: 240px;
  background: rgba(61,205,88,0.18);
  border-radius: 50%;
  filter: blur(14px);
}
.hero-logo-card img { position: relative; z-index: 1; }
.hero-tagline {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 22px;
}
.hero-tagline span {
  background: rgba(17,24,39,0.05);
  border: 1px solid rgba(17,24,39,0.06);
  border-radius: 16px;
  padding: 12px;
  font-weight: 900;
  color: var(--ink-soft);
  font-size: 13px;
}

.section { padding: 92px 0; }
.section.alt { background: var(--mist); }
.section.dark {
  background: var(--charcoal);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.section.dark::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 15% 25%, rgba(61,205,88,0.22), transparent 32%), radial-gradient(circle at 90% 70%, rgba(61,205,88,0.10), transparent 30%);
  pointer-events: none;
}
.container {
  width: var(--container);
  margin: 0 auto;
  position: relative;
}
.section-header {
  display: grid;
  grid-template-columns: 0.8fr 1fr;
  gap: 52px;
  align-items: end;
  margin-bottom: 42px;
}
.section-title {
  margin: 14px 0 0;
  font-size: clamp(32px, 4.2vw, 58px);
  line-height: 1.02;
  letter-spacing: -0.045em;
}
.section-lead {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}
.dark .section-lead { color: rgba(255,255,255,0.72); }
.dark .eyebrow { color: var(--brand); }

.metrics-band {
  position: relative;
  margin-top: -44px;
  z-index: 3;
}
.metrics-grid {
  width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.metric-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 20px;
  box-shadow: 0 18px 55px rgba(17,24,39,0.08);
}
.metric-card strong {
  display: block;
  font-size: 25px;
  letter-spacing: -0.03em;
}
.metric-card span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.glass-card, .article-card, .program-step, .strength-item, .faq-item {
  background: #fff;
  border: 1px solid rgba(229,231,235,0.9);
  border-radius: var(--radius);
  box-shadow: 0 16px 60px rgba(17,24,39,0.06);
}
.glass-card {
  min-height: 278px;
  padding: 24px;
}
.card-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--brand), rgba(61,205,88,0.22));
  margin-bottom: 24px;
}
.glass-card h3, .article-card h3, .strength-item h3, .program-step h3 {
  margin: 0 0 10px;
  font-size: 21px;
  line-height: 1.18;
  letter-spacing: -0.025em;
}
.glass-card p, .article-card p, .strength-item p, .program-step p, .faq-item p {
  margin: 0;
  color: var(--muted);
}

.strength-layout {
  display: grid;
  grid-template-columns: 0.7fr 1fr;
  gap: 52px;
  align-items: start;
}
.strength-brand {
  position: sticky;
  top: 110px;
  background: #fff;
  border-radius: 34px;
  padding: 28px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.strength-brand img { margin: 0 auto; max-width: 320px; }
.strength-list {
  display: grid;
  gap: 16px;
}
.strength-item {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 16px;
  padding: 24px;
  background: rgba(255,255,255,0.98);
}
.dot {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--brand);
  margin-top: 8px;
  box-shadow: 0 0 0 9px rgba(61,205,88,0.13);
}

.program-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.program-step {
  padding: 24px;
  min-height: 260px;
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.13);
  backdrop-filter: blur(14px);
}
.program-step p { color: rgba(255,255,255,0.72); }
.step-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  border-radius: 18px;
  background: rgba(61,205,88,0.16);
  border: 1px solid rgba(61,205,88,0.36);
  color: var(--brand);
  font-weight: 900;
  margin-bottom: 28px;
}
.sector-panel {
  margin-top: 48px;
  padding: 28px;
  border-radius: 28px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.13);
}
.sector-panel h3 { margin: 0 0 18px; font-size: 22px; }
.sector-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.sector-list li {
  padding: 10px 13px;
  border-radius: 999px;
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.86);
  font-weight: 700;
  font-size: 14px;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.article-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
  min-height: 275px;
}
.tag {
  align-self: flex-start;
  padding: 7px 10px;
  border-radius: 999px;
  color: var(--brand-dark);
  background: rgba(61,205,88,0.12);
  font-size: 12px;
  font-weight: 900;
  margin-bottom: 20px;
}
.article-button {
  margin-top: auto;
  align-self: flex-start;
  border: 0;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  padding: 11px 15px;
  font-weight: 900;
  cursor: pointer;
}
.article-button:hover { background: var(--brand-dark); }

.membership-layout {
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  gap: 42px;
  align-items: center;
}
.criteria-card, .member-cta-card {
  border-radius: 32px;
  border: 1px solid var(--line);
  background: #fff;
  padding: 30px;
  box-shadow: var(--shadow);
}
.criteria-card h3, .member-cta-card h3 { margin: 0 0 16px; font-size: 24px; letter-spacing: -0.03em; }
.criteria-list {
  padding: 0;
  margin: 0;
  list-style: none;
  display: grid;
  gap: 13px;
}
.criteria-list li {
  position: relative;
  padding-left: 28px;
  color: var(--ink-soft);
}
.criteria-list li::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--brand);
  position: absolute;
  left: 3px;
  top: 10px;
  box-shadow: 0 0 0 6px rgba(61,205,88,0.13);
}
.member-cta-card {
  background: var(--ink);
  color: #fff;
  overflow: hidden;
  position: relative;
}
.member-cta-card::after {
  content: "";
  position: absolute;
  right: -58px;
  top: -58px;
  width: 190px;
  height: 190px;
  background: var(--brand);
  opacity: 0.22;
  border-radius: 50%;
  filter: blur(8px);
}
.member-cta-card p { color: rgba(255,255,255,0.72); position: relative; z-index: 1; }
.member-cta-card h3, .member-cta-card a { position: relative; z-index: 1; }
.member-cta-card .btn { margin-top: 22px; }

.faq-wrap {
  display: grid;
  grid-template-columns: 0.55fr 1fr;
  gap: 42px;
  align-items: start;
}
.faq-list { display: grid; gap: 12px; }
.faq-item {
  padding: 0;
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 20px 24px;
  font-weight: 900;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item p { padding: 0 24px 22px; }

.site-footer {
  background: #080D17;
  color: #fff;
  padding: 58px 0 30px;
}
.footer-inner {
  width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: start;
}
.footer-logo { width: 270px; filter: brightness(1.05); background: #fff; border-radius: 16px; padding: 12px; }
.footer-title { margin: 24px 0 4px; font-size: 27px; letter-spacing: -0.04em; }
.footer-text { color: rgba(255,255,255,0.7); max-width: 620px; }
.footer-actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: flex-end; }
.footer-bottom {
  width: var(--container);
  margin: 36px auto 0;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.12);
  display: flex;
  justify-content: space-between;
  gap: 18px;
  color: rgba(255,255,255,0.54);
  font-size: 13px;
}

.article-dialog {
  width: min(760px, calc(100vw - 38px));
  border: 0;
  border-radius: 28px;
  padding: 0;
  box-shadow: 0 34px 100px rgba(17,24,39,0.28);
}
.article-dialog::backdrop { background: rgba(8,13,23,0.62); backdrop-filter: blur(8px); }
.dialog-inner { padding: 32px; }
.dialog-inner h2 { margin: 14px 0 14px; font-size: clamp(28px, 4vw, 42px); line-height: 1.08; letter-spacing: -0.045em; }
.dialog-inner p { color: var(--ink-soft); font-size: 17px; }
.dialog-close { margin-top: 24px; }

.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.55s ease, transform 0.55s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1020px) {
  .hero-inner, .section-header, .strength-layout, .membership-layout, .faq-wrap { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .hero-visual { justify-self: start; }
  .metrics-grid, .card-grid, .program-grid { grid-template-columns: repeat(2, 1fr); }
  .article-grid { grid-template-columns: repeat(2, 1fr); }
  .strength-brand { position: relative; top: auto; }
}

@media (max-width: 820px) {
  :root { --container: min(100vw - 28px, 1180px); }
  .header-inner { min-height: 68px; }
  .logo-link img { width: 185px; }
  .mobile-menu-button { display: inline-flex; }
  .site-nav {
    position: absolute;
    display: none;
    top: 68px;
    left: 14px;
    right: 14px;
    margin-left: 0;
    padding: 18px;
    border-radius: 22px;
    background: #fff;
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }
  .site-nav.is-open { display: flex; }
  .language-switcher { margin-left: 0; }
  .hero-inner { padding: 60px 0 68px; gap: 34px; }
  .hero h1 { letter-spacing: -0.052em; }
  .section { padding: 68px 0; }
  .metrics-band { margin-top: -22px; }
  .footer-inner, .footer-bottom { grid-template-columns: 1fr; }
  .footer-actions { justify-content: flex-start; }
}

@media (max-width: 620px) {
  .metrics-grid, .card-grid, .program-grid, .article-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn { width: 100%; }
  .hero-tagline { grid-template-columns: 1fr; }
  .criteria-card, .member-cta-card, .dialog-inner { padding: 24px; }
}