/* ==========================================================================
   Optimal Green Power — optimalgp.com
   Design tokens, base styles, layout and components.
   Palette sampled from the corporate logo (greens) + graphite neutrals.
   ========================================================================== */

:root {
  /* Brand greens (sampled from the logo artwork) */
  --green-900: #0d3a1b;
  --green-800: #124c23;
  --green-700: #1e5f31;
  --green-600: #2c7a38;
  --green-500: #3c8d3e;
  --green-400: #51a843;
  --green-300: #81af36;
  --lime-400: #8cbf3f;
  --lime-200: #c9e2a0;
  --green-50: #f1f7ed;

  /* Neutrals */
  --ink-900: #14211a;
  --ink-800: #1f2d25;
  --ink-700: #33453a;
  --ink-500: #5b6b61;
  --ink-400: #7c8a82;
  --ink-300: #aab4ad;
  --ink-200: #d8ded9;
  --ink-100: #eceeeb;
  --white: #ffffff;

  /* Accent used only for links to the parent group */
  --teal-600: #00b7b6;

  /* Semantic tokens */
  --bg: var(--white);
  --bg-alt: var(--green-50);
  --bg-dark: var(--green-900);
  --text: var(--ink-800);
  --text-muted: var(--ink-500);
  --border: var(--ink-200);
  --border-soft: var(--ink-100);
  --brand: var(--green-600);
  --brand-strong: var(--green-800);
  --focus: #1b6fd4;
  --error: #b3261e;

  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(20, 33, 26, .06), 0 1px 3px rgba(20, 33, 26, .08);
  --shadow-md: 0 6px 18px rgba(20, 33, 26, .08);
  --shadow-lg: 0 20px 44px -16px rgba(20, 33, 26, .22);

  --container: 1200px;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --section-y: clamp(3.5rem, 7vw, 6.5rem);

  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, "Noto Sans", "Noto Sans SC",
    "Microsoft YaHei", "PingFang SC", sans-serif;
  --header-h: 76px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4, h5 {
  margin: 0 0 .6em;
  line-height: 1.2;
  color: var(--ink-900);
  font-weight: 700;
  letter-spacing: -.015em;
}

h1 { font-size: clamp(2rem, 4.6vw, 3.25rem); }
h2 { font-size: clamp(1.6rem, 3.1vw, 2.35rem); }
h3 { font-size: clamp(1.2rem, 2.1vw, 1.55rem); }
h4 { font-size: 1.05rem; }

p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

a { color: var(--green-700); text-decoration: underline; text-underline-offset: .18em; }
a:hover { color: var(--green-500); }

ul, ol { margin: 0 0 1rem; padding-left: 1.25rem; }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 3px;
}

/* ---------- Helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container.narrow { max-width: 820px; }

.section { padding-block: var(--section-y); }
.section-alt { background: var(--bg-alt); }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 1rem; top: -100px;
  z-index: 200;
  padding: .7rem 1.1rem;
  background: var(--green-800);
  color: var(--white);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: top .15s ease;
}
.skip-link:focus { top: 1rem; color: var(--white); }

.eyebrow {
  margin: 0 0 .75rem;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--green-600);
}

.lead { font-size: clamp(1.02rem, 1.4vw, 1.18rem); color: var(--text-muted); }

.icon { flex: none; }
.icon-xs { width: 16px; height: 16px; }
.icon-sm { width: 20px; height: 20px; }
.icon-md { width: 28px; height: 28px; }
.icon-lg { width: 36px; height: 36px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .8rem 1.35rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: .95rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-sm { padding: .58rem 1.05rem; font-size: .88rem; }

.btn-primary { background: var(--green-600); color: var(--white); }
.btn-primary:hover { background: var(--green-700); color: var(--white); }

.btn-ghost { background: var(--white); color: var(--green-800); border-color: var(--border); }
.btn-ghost:hover { background: var(--green-50); color: var(--green-800); border-color: var(--green-400); }

.btn-outline { background: transparent; color: var(--green-700); border-color: var(--green-400); }
.btn-outline:hover { background: var(--green-50); color: var(--green-800); }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-soft);
}
.site-header.is-scrolled { box-shadow: var(--shadow-sm); }

.header-inner {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 2.5rem);
  min-height: var(--header-h);
}

.brand { flex: none; line-height: 0; text-decoration: none; }
.brand-logo { width: clamp(150px, 16vw, 200px); height: auto; }

.site-nav { margin-inline-start: auto; }
.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(.5rem, 1.6vw, 1.6rem);
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav-link {
  display: inline-block;
  padding: .45rem .15rem;
  font-size: .95rem;
  font-weight: 600;
  color: var(--ink-700);
  text-decoration: none;
  border-bottom: 2px solid transparent;
}
.nav-link:hover { color: var(--green-700); border-bottom-color: var(--green-300); }
.nav-link.is-active { color: var(--green-800); border-bottom-color: var(--green-500); }

.header-actions { display: flex; align-items: center; gap: .6rem; }

/* Language switcher */
.lang-switch { position: relative; }
.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .5rem .75rem;
  background: var(--white);
  color: var(--ink-700);
  border: 1px solid var(--border);
  border-radius: 999px;
  font: inherit;
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
}
.lang-btn:hover { border-color: var(--green-400); color: var(--green-800); }
.chev {
  width: 0; height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
}
.lang-btn[aria-expanded="true"] .chev { transform: rotate(180deg); }

.lang-menu {
  position: absolute;
  inset-inline-end: 0;
  top: calc(100% + .4rem);
  min-width: 190px;
  margin: 0;
  padding: .35rem;
  list-style: none;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  display: none;
}
.lang-switch.is-open .lang-menu { display: block; }
.lang-menu a {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .55rem .7rem;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  color: var(--ink-700);
  text-decoration: none;
}
.lang-menu a:hover { background: var(--green-50); color: var(--green-800); }
.lang-menu a[aria-current="true"] { background: var(--green-50); color: var(--green-800); font-weight: 700; }
.lang-code {
  min-width: 2.4rem;
  font-weight: 700;
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--green-600);
}

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  padding: 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.nav-toggle .bar {
  display: block;
  width: 20px; height: 2px;
  margin: 4px auto;
  background: var(--ink-700);
  border-radius: 2px;
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] .bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ==========================================================================
   Hero + page hero
   ========================================================================== */
.hero {
  position: relative;
  padding-block: clamp(2.5rem, 6vw, 5rem);
  background:
    radial-gradient(900px 520px at 88% 12%, rgba(60, 141, 62, .13), transparent 62%),
    radial-gradient(700px 420px at 6% 88%, rgba(140, 191, 63, .13), transparent 60%),
    var(--white);
  overflow: hidden;
}
.hero-video {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}
.hero-video video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
@media (min-width: 901px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }
}
.hero-text {
  padding: clamp(1.5rem, 3vw, 2.5rem);
  background: rgba(20, 33, 26, .7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, .15);
  color: var(--white);
}
.hero h1 { margin-bottom: 1rem; color: var(--white); }
.hero h1 em { font-style: normal; color: var(--lime-400); }
.hero .lead { max-width: 56ch; color: rgba(255, 255, 255, .9); }
.hero .eyebrow { color: var(--lime-200); }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  margin: 0 0 1.1rem;
  padding: .35rem .8rem .35rem .55rem;
  background: rgba(255, 255, 255, .15);
  border: 1px solid rgba(255, 255, 255, .25);
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 600;
  color: var(--white);
}
.hero-badge .icon { color: var(--lime-300); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.8rem; }
.hero-actions .btn-primary { background: var(--lime-400); color: var(--green-900); }
.hero-actions .btn-primary:hover { background: var(--lime-200); color: var(--green-900); }
.hero-actions .btn-ghost { background: transparent; color: var(--white); border-color: rgba(255, 255, 255, .5); }
.hero-actions .btn-ghost:hover { background: rgba(255, 255, 255, .12); color: var(--white); }

.page-hero {
  padding-block: clamp(2.25rem, 5vw, 4rem);
  background: linear-gradient(180deg, var(--green-50), var(--white));
}
.page-hero.is-compact { padding-block: clamp(2rem, 4vw, 3rem); }
.page-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  gap: clamp(1.75rem, 4vw, 3.5rem);
  align-items: center;
}
.page-hero:not(.has-media) .page-hero-inner { grid-template-columns: 1fr; }
.page-hero-text { max-width: 62ch; }
.page-hero-media img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }

.breadcrumb {
  padding-block: .8rem;
  border-bottom: 1px solid var(--border-soft);
  font-size: .85rem;
}
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--text-muted);
}
.breadcrumb li + li::before { content: "/"; margin-inline-end: .4rem; color: var(--ink-300); }
.breadcrumb a { color: var(--ink-500); text-decoration: none; }
.breadcrumb a:hover { color: var(--green-700); text-decoration: underline; }

/* ==========================================================================
   Section heads, metrics, values
   ========================================================================== */
.section-head { max-width: 72ch; margin-bottom: clamp(2rem, 4vw, 3rem); }
.section-head.is-center { margin-inline: auto; text-align: center; }
.section-text { color: var(--text-muted); font-size: 1.05rem; }
.section-foot { margin-top: 2.25rem; text-align: center; }
.subsection-title { margin-top: 3rem; }

.metrics-section { padding-block: clamp(2rem, 4vw, 3rem); }
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}
.metric {
  padding: 1.5rem 1.35rem;
  background: var(--white);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.metric-value {
  margin: 0 0 .25rem;
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--green-700);
  letter-spacing: -.02em;
}
.metric-label { margin: 0 0 .35rem; font-weight: 700; font-size: .95rem; }
.metric-note { margin: 0; font-size: .85rem; color: var(--text-muted); }

.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.15rem;
}
.value-card {
  padding: 1.75rem 1.5rem;
  background: var(--white);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.value-card h3 { font-size: 1.12rem; }
.value-card p { margin: 0; color: var(--text-muted); font-size: .95rem; }
.value-icon, .panel-icon, .usecase-icon, .solution-icon, .category-icon, .sector-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px; height: 52px;
  margin-bottom: 1rem;
  background: var(--green-50);
  color: var(--green-600);
  border-radius: 14px;
}
.category-icon { width: 60px; height: 60px; }

/* ==========================================================================
   Solutions, categories and products
   ========================================================================== */
.solution-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(255px, 1fr));
  gap: 1.15rem;
}
.solution-card {
  background: var(--white);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .2s ease, transform .2s ease;
}
.solution-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.solution-link { display: block; color: inherit; text-decoration: none; }
.solution-link img { aspect-ratio: 4 / 3; object-fit: cover; width: 100%; }
.solution-body { padding: 1.35rem 1.4rem 1.6rem; }
.solution-body .solution-icon { width: 44px; height: 44px; margin-bottom: .8rem; }
.solution-body h3 { font-size: 1.1rem; margin-bottom: .35rem; }
.solution-tagline { margin: 0 0 .9rem; font-size: .9rem; color: var(--text-muted); }
.solution-more {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  margin: 0;
  font-size: .88rem;
  font-weight: 700;
  color: var(--green-600);
}

.quick-nav {
  position: sticky;
  top: var(--header-h);
  z-index: 50;
  background: var(--white);
  border-bottom: 1px solid var(--border-soft);
}
.quick-nav ul {
  display: flex;
  gap: .4rem;
  margin: 0;
  padding: .6rem 0;
  list-style: none;
  overflow-x: auto;
}
.quick-nav a {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .45rem .85rem;
  white-space: nowrap;
  font-size: .87rem;
  font-weight: 600;
  color: var(--ink-700);
  background: var(--green-50);
  border-radius: 999px;
  text-decoration: none;
}
.quick-nav a:hover { background: var(--lime-200); color: var(--green-800); }

.category { padding-block: clamp(2.75rem, 6vw, 4.5rem); }
.category:nth-child(even) { background: var(--bg-alt); }
.category-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3.5rem);
  align-items: center;
  margin-bottom: clamp(1.75rem, 3vw, 2.75rem);
}
.category-tagline {
  margin: -.3rem 0 1rem;
  font-size: .95rem;
  font-weight: 600;
  color: var(--green-600);
}
.category-media img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }

.check-list { margin: 1.25rem 0 0; padding: 0; list-style: none; }
.check-list li {
  display: flex;
  align-items: flex-start;
  gap: .55rem;
  margin-bottom: .55rem;
  font-size: .95rem;
}
.check-list .icon { margin-top: .28rem; color: var(--green-500); }

.products-title {
  margin-bottom: 1rem;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 1.15rem;
}
.product-card {
  padding: 1.5rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.product-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem;
  margin-bottom: 1.1rem;
  padding-bottom: .9rem;
  border-bottom: 1px solid var(--border-soft);
}
.product-model { margin: 0; font-size: 1.22rem; color: var(--green-800); }
.product-badge {
  order: 2;
  padding: .2rem .6rem;
  background: var(--green-800);
  color: var(--white);
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.spec-list { margin: 0; }
.spec-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: .45rem 0;
  border-bottom: 1px dashed var(--border-soft);
  font-size: .9rem;
}
.spec-row:last-child { border-bottom: 0; }
.spec-row dt { color: var(--text-muted); }
.spec-row dd { margin: 0; font-weight: 700; text-align: end; }
.spec-note { margin-top: 1.25rem; font-size: .82rem; color: var(--ink-400); }

.standard-list {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.standard-chip {
  padding: .5rem 1rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: .88rem;
  font-weight: 600;
  color: var(--ink-700);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.15rem;
}
.service-card {
  padding: 1.5rem;
  border-inline-start: 3px solid var(--green-400);
  background: var(--green-50);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.service-card h3 { font-size: 1.05rem; }
.service-card p { margin: 0; font-size: .93rem; color: var(--text-muted); }

/* ==========================================================================
   Sectors, use cases, process, about
   ========================================================================== */
.sector-chips { display: flex; flex-wrap: wrap; gap: .65rem; margin: 0; padding: 0; list-style: none; }
.sector-chips a {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .7rem 1.2rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: .93rem;
  font-weight: 600;
  color: var(--ink-700);
  text-decoration: none;
}
.sector-chips a:hover { border-color: var(--green-400); color: var(--green-800); background: var(--white); }
.sector-chips .icon { color: var(--green-500); }

.usecase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(265px, 1fr));
  gap: 1.15rem;
}
.usecase-card {
  padding: 1.6rem 1.45rem;
  background: var(--white);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.usecase-card h3 { font-size: 1.08rem; }
.usecase-card p { margin: 0; font-size: .93rem; color: var(--text-muted); }

.sector-blocks { display: grid; gap: clamp(2rem, 4vw, 3.25rem); }
.sector-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 3.5vw, 3rem);
  align-items: center;
  padding-bottom: clamp(2rem, 4vw, 3.25rem);
  border-bottom: 1px solid var(--border);
}
.sector-block:last-child { padding-bottom: 0; border-bottom: 0; }
.sector-block.is-reversed .sector-media { order: -1; }
.sector-media { margin: 0; }
.sector-media img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.sector-icon { width: 48px; height: 48px; }

.step-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.15rem;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}
.step {
  position: relative;
  padding: 1.6rem 1.45rem;
  background: var(--white);
  border: 1px solid var(--border-soft);
  border-top: 3px solid var(--green-500);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.step-num {
  display: block;
  margin-bottom: .6rem;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--lime-400);
  line-height: 1;
}
.step h3 { font-size: 1.05rem; }
.step p { margin: 0; font-size: .93rem; color: var(--text-muted); }

.two-col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.35rem;
}
.panel {
  padding: 1.9rem 1.7rem;
  background: var(--green-50);
  border-radius: var(--radius-lg);
}
.panel h2 { font-size: 1.35rem; }
.panel p { margin: 0; color: var(--ink-700); }
.panel-icon { background: var(--white); }

.story-inner, .group-inner, .group-block {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: clamp(1.75rem, 4vw, 3.5rem);
  align-items: center;
}
.story-media, .group-block-media { margin: 0; }
.story-media img, .group-media img, .group-block-media img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.story-text p { color: var(--ink-700); }

.unit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.1rem;
}
.unit-card {
  padding: 1.5rem 1.35rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.unit-card h3 { font-size: 1.05rem; color: var(--green-700); }
.unit-card p { margin: 0; font-size: .92rem; color: var(--text-muted); }

.principle-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 1.35rem;
}
.principle { display: flex; gap: 1rem; align-items: flex-start; }
.principle-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 38px; height: 38px;
  background: var(--green-600);
  color: var(--white);
  border-radius: 50%;
}
.principle h3 { font-size: 1.05rem; margin-bottom: .3rem; }
.principle p { margin: 0; font-size: .93rem; color: var(--text-muted); }

.group-section { background: linear-gradient(180deg, var(--white), var(--green-50)); }

/* ==========================================================================
   Tables, CTA band
   ========================================================================== */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: .93rem; background: var(--white); }
caption { padding: .75rem; text-align: start; font-size: .85rem; color: var(--text-muted); }
th, td { padding: .8rem 1rem; text-align: start; border-bottom: 1px solid var(--border-soft); }
thead th { background: var(--green-50); font-size: .82rem; letter-spacing: .04em; text-transform: uppercase; }
tbody tr:last-child th, tbody tr:last-child td { border-bottom: 0; }
tbody th { font-weight: 700; color: var(--green-800); }

.cta-band { padding-block: clamp(2.75rem, 5vw, 4rem); background: var(--green-800); color: var(--white); }
.cta-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.75rem;
}
.cta-band h2 { color: var(--white); margin-bottom: .5rem; }
.cta-band p { margin: 0; max-width: 62ch; color: rgba(255, 255, 255, .85); }
.cta-actions { display: flex; flex-wrap: wrap; gap: .75rem; }
.cta-band .btn-primary { background: var(--lime-400); color: var(--green-900); }
.cta-band .btn-primary:hover { background: var(--lime-200); color: var(--green-900); }
.cta-band .btn-ghost { background: transparent; color: var(--white); border-color: rgba(255, 255, 255, .5); }
.cta-band .btn-ghost:hover { background: rgba(255, 255, 255, .12); color: var(--white); }

/* ==========================================================================
   Contact page and form
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
  gap: clamp(1.75rem, 4vw, 3.25rem);
  align-items: start;
}
.contact-form-wrap {
  padding: clamp(1.5rem, 3vw, 2.25rem);
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.form-intro { font-size: .88rem; color: var(--text-muted); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field { margin-bottom: 1.1rem; }
.field label {
  display: block;
  margin-bottom: .35rem;
  font-size: .88rem;
  font-weight: 600;
  color: var(--ink-700);
}
.field label span[aria-hidden] { color: var(--error); }

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: .7rem .85rem;
  font: inherit;
  font-size: .95rem;
  color: var(--text);
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.field textarea { resize: vertical; min-height: 140px; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--green-500); }
.field input::placeholder, .field textarea::placeholder { color: var(--ink-300); }
.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"],
.field select[aria-invalid="true"] { border-color: var(--error); }

.field-error { margin: .35rem 0 0; font-size: .83rem; font-weight: 600; color: var(--error); }

.field-check {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .25rem .6rem;
  align-items: start;
}
.field-check input { width: 20px; height: 20px; margin-top: .2rem; }
.field-check label { margin: 0; font-weight: 400; font-size: .88rem; line-height: 1.5; }
.field-check .field-error { grid-column: 1 / -1; }

.honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.form-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; margin-top: .5rem; }
.form-status { margin: 0; font-size: .9rem; font-weight: 600; }
.form-status.is-ok { color: var(--green-700); }
.form-status.is-error { color: var(--error); }

.contact-info h2 { font-size: 1.3rem; }
.info-list { margin: 0 0 1.75rem; padding: 0; list-style: none; }
.info-list li {
  display: flex;
  gap: .75rem;
  padding: .7rem 0;
  border-bottom: 1px solid var(--border-soft);
}
.info-list .icon { margin-top: .3rem; color: var(--green-500); }
.info-list p { margin: 0; font-size: .93rem; }
.info-label {
  display: block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.contact-map { margin: 0; }
.contact-map img { border-radius: var(--radius); border: 1px solid var(--border); }
.contact-map figcaption { margin-top: .6rem; font-size: .85rem; }

.faq-list { display: grid; gap: .6rem; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.faq-item summary {
  padding: 1rem 1.15rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; float: inline-end; color: var(--green-600); font-weight: 700; }
.faq-item[open] summary::after { content: "–"; }
.faq-body { padding: 0 1.15rem 1.15rem; font-size: .94rem; color: var(--text-muted); }

/* ==========================================================================
   Legal pages
   ========================================================================== */
.legal-meta { margin-top: 1rem; font-size: .85rem; color: var(--text-muted); }
.legal-layout {
  display: grid;
  grid-template-columns: minmax(0, 260px) minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3.25rem);
  align-items: start;
}
.legal-toc {
  position: sticky;
  top: calc(var(--header-h) + 1.5rem);
  padding: 1.25rem 1.35rem;
  background: var(--green-50);
  border-radius: var(--radius);
  font-size: .89rem;
}
.legal-toc ol { margin: 0; padding-inline-start: 1.2rem; }
.legal-toc li { margin-bottom: .45rem; }
.legal-toc a { color: var(--ink-700); text-decoration: none; }
.legal-toc a:hover { color: var(--green-700); text-decoration: underline; }

.legal-body { max-width: 78ch; }
.legal-draft {
  padding: .8rem 1rem;
  margin-bottom: 2rem;
  background: #fff7e6;
  border-inline-start: 3px solid #d9a100;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: .85rem;
  color: #6b4f00;
}
.legal-section { margin-bottom: 2.25rem; }
.legal-section h2 { font-size: 1.28rem; }
.legal-section ul { padding-inline-start: 1.2rem; }
.legal-section li { margin-bottom: .4rem; }
.legal-section code {
  padding: .1rem .35rem;
  background: var(--green-50);
  border-radius: 4px;
  font-size: .9em;
}

/* ==========================================================================
   Footer, back-to-top, redirect / 404
   ========================================================================== */
.site-footer {
  padding-top: clamp(2.75rem, 5vw, 4rem);
  background: var(--green-900);
  color: rgba(255, 255, 255, .78);
  font-size: .92rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(4, minmax(0, 1fr));
  gap: clamp(1.5rem, 3vw, 2.5rem);
  padding-bottom: 2.5rem;
}
.footer-logo { width: 190px; height: auto; margin-bottom: 1rem; }
.footer-tagline { max-width: 42ch; }
.footer-group { margin-top: .75rem; font-size: .88rem; }
.footer-group a { color: var(--teal-600); }
.footer-title {
  margin-bottom: .9rem;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--white);
}
.footer-col ul { margin: 0; padding: 0; list-style: none; }
.footer-col li { margin-bottom: .5rem; line-height: 1.5; }
.site-footer a { color: rgba(255, 255, 255, .82); text-decoration: none; }
.site-footer a:hover { color: var(--lime-400); text-decoration: underline; }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  padding-block: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, .14);
  font-size: .82rem;
}
.footer-bottom p { margin: 0; }
.footer-disclaimer { max-width: 62ch; color: rgba(255, 255, 255, .55); }

.to-top {
  position: fixed;
  inset-inline-end: 1.25rem;
  inset-block-end: 1.25rem;
  z-index: 90;
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  background: var(--green-700);
  color: var(--white);
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  text-decoration: none;
}
.to-top .icon { transform: rotate(-90deg); }
.to-top.is-visible { display: flex; }
.to-top:hover { background: var(--green-800); color: var(--white); }

.redirect-page { display: grid; place-items: center; min-height: 100vh; background: var(--green-50); }
.redirect-inner { padding: 2.5rem; text-align: center; }
.redirect-inner img { margin: 0 auto 1.5rem; width: 240px; }
.redirect-langs { display: flex; justify-content: center; gap: 1rem; margin: 1.25rem 0 0; padding: 0; list-style: none; }
.error-inner section { margin-top: 1.5rem; }
.error-inner h2 { margin-bottom: .35rem; font-size: 1.15rem; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1080px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
  .legal-layout { grid-template-columns: 1fr; }
  .legal-toc { position: static; }
}

@media (max-width: 900px) {
  :root { --header-h: 66px; }

  .nav-toggle { display: block; }
  .header-cta { display: none; }
  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    transition: transform .22s ease;
    visibility: hidden;
  }
  .site-nav.is-open { transform: translateY(0); visibility: visible; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 0; padding: .5rem var(--gutter) 1.25rem; }
  .nav-link {
    display: block;
    padding: .9rem .25rem;
    border-bottom: 1px solid var(--border-soft);
    font-size: 1rem;
  }
  .nav-link.is-active { border-bottom-color: var(--green-500); }

  .hero-inner,
  .page-hero-inner,
  .category-inner,
  .sector-block,
  .story-inner,
  .group-inner,
  .group-block,
  .contact-grid { grid-template-columns: 1fr; }

  .hero-media { order: -1; }
  .sector-block.is-reversed .sector-media { order: 0; }
  .quick-nav { position: static; }
}

@media (max-width: 620px) {
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .brand-logo { width: 148px; }
  .lang-name { display: none; }
  .lang-menu { min-width: 120px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  .btn:hover, .solution-card:hover { transform: none; }
}

@media print {
  .site-header, .site-footer, .to-top, .cta-band, .quick-nav, .breadcrumb { display: none !important; }
  body { color: #000; }
}