/* ============================================================
   Green Manufacturing & Sustainable Engineering
   NTU Singapore × Chizhou University · Class Website 2026
   ============================================================ */

:root {
  --forest: #0d3b2e;
  --forest-deep: #07261d;
  --emerald: #1a6b4a;
  --leaf: #2d9b6a;
  --mint: #6ecf9b;
  --sage: #a8d5b5;
  --cream: #f6f3eb;
  --cream-dark: #ebe6d9;
  --sand: #e8e0d0;
  --ink: #1a1f1c;
  --ink-soft: #3d4a44;
  --muted: #6b7a72;
  --white: #ffffff;
  --solar: #e8a317;
  --textile: #c45c7a;
  --ev: #3b7dd8;
  --card-shadow: 0 4px 24px rgba(13, 59, 46, 0.08);
  --radius: 14px;
  --radius-sm: 8px;
  --max: 1120px;
  --nav-h: 68px;
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "DM Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.6;
  font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--emerald); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--leaf); }
ul { list-style: none; }

/* ---------- Layout ---------- */
.wrap {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

.section { padding: 4.5rem 0; }
.section-tight { padding: 3rem 0; }
.section-alt { background: var(--cream-dark); }
.section-dark {
  background: linear-gradient(160deg, var(--forest-deep) 0%, var(--forest) 55%, #0f4a38 100%);
  color: var(--cream);
}

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 550;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.1rem, 4.5vw, 3.4rem); }
h2 { font-size: clamp(1.65rem, 3vw, 2.25rem); margin-bottom: 0.75rem; }
h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
h4 { font-size: 1.05rem; }

.lead {
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 52ch;
  line-height: 1.65;
}

.section-dark .lead { color: var(--sage); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--leaf);
  margin-bottom: 0.85rem;
}

.section-dark .eyebrow { color: var(--mint); }

.eyebrow::before {
  content: "";
  width: 1.25rem;
  height: 2px;
  background: currentColor;
}

/* ---------- Navigation ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(246, 243, 235, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(13, 59, 46, 0.08);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--forest);
  font-weight: 600;
  font-size: 0.95rem;
  flex-shrink: 0;
}

.logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--emerald), var(--leaf));
  display: grid;
  place-items: center;
  color: white;
  font-size: 1rem;
}

.logo span { font-family: var(--font-display); letter-spacing: -0.01em; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  color: var(--ink-soft);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  transition: background 0.15s, color 0.15s;
}

.nav-links a:hover,
.nav-links a.active {
  background: var(--forest);
  color: var(--cream);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1.5px solid var(--forest);
  border-radius: 8px;
  padding: 0.4rem 0.65rem;
  font-size: 0.85rem;
  color: var(--forest);
  cursor: pointer;
  font-family: var(--font-body);
}

/* Language switcher */
.lang-switch {
  display: inline-flex;
  align-items: center;
  border: 1.5px solid var(--sand);
  border-radius: 999px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--white);
}
.lang-switch a {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.35rem 0.65rem;
  color: var(--muted);
  border-radius: 0;
}
.lang-switch a:hover { color: var(--forest); background: rgba(45,155,106,0.08); }
.lang-switch a.active {
  background: var(--forest);
  color: var(--cream);
}
.lang-switch a.active:hover { color: var(--cream); }

/* Google Form embed */
.form-embed {
  width: 100%;
  min-height: 1200px;
  border: none;
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--card-shadow);
}
.form-config-box {
  background: #fff8e6;
  border: 1.5px solid #e8c96a;
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem;
  margin: 1.25rem 0;
}
.form-config-box code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: rgba(0,0,0,0.05);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

/* ---------- Hero ---------- */
.hero {
  padding: 5rem 0 4.5rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 90% 10%, rgba(45, 155, 106, 0.18), transparent 55%),
    radial-gradient(ellipse 50% 50% at 5% 90%, rgba(232, 163, 23, 0.1), transparent 50%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: center;
  position: relative;
}

.hero h1 { margin-bottom: 1.1rem; color: var(--forest-deep); }

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.5rem 0 2rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 500;
  background: var(--white);
  border: 1px solid var(--sand);
  color: var(--ink-soft);
}

.chip strong { color: var(--forest); font-weight: 600; }

.btn-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.75rem 1.35rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.92rem;
  font-family: var(--font-body);
  border: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
  text-decoration: none;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--forest);
  color: var(--cream);
  box-shadow: 0 4px 16px rgba(13, 59, 46, 0.25);
}
.btn-primary:hover { background: var(--emerald); color: white; }

.btn-ghost {
  background: transparent;
  color: var(--forest);
  border: 1.5px solid var(--forest);
}
.btn-ghost:hover { background: var(--forest); color: var(--cream); }

.btn-light {
  background: var(--cream);
  color: var(--forest);
}
.btn-light:hover { background: white; color: var(--emerald); }

/* Hero card stack */
.hero-cards {
  display: grid;
  gap: 0.85rem;
}

.hero-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.15rem 1.25rem;
  box-shadow: var(--card-shadow);
  border: 1px solid rgba(13, 59, 46, 0.06);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
  transition: transform 0.2s;
}
.hero-card:hover { transform: translateX(4px); }

.hero-card .num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--leaf);
  background: rgba(45, 155, 106, 0.12);
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 8px;
  display: grid;
  place-items: center;
}

.hero-card h3 { font-size: 1rem; margin-bottom: 0.2rem; color: var(--forest); }
.hero-card p { font-size: 0.85rem; color: var(--muted); line-height: 1.45; }

/* ---------- Stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: -1.5rem;
  position: relative;
  z-index: 2;
}

.stat {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.35rem 1.25rem;
  box-shadow: var(--card-shadow);
  border: 1px solid rgba(13, 59, 46, 0.06);
  text-align: center;
}

.stat .val {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  color: var(--forest);
  line-height: 1.1;
}

.stat .label {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 0.35rem;
}

/* ---------- Cards & grids ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.15rem;
  margin-top: 1.75rem;
}

.card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--card-shadow);
  border: 1px solid rgba(13, 59, 46, 0.06);
  height: 100%;
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(13, 59, 46, 0.12);
}

.card-icon {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  font-size: 1.2rem;
  margin-bottom: 1rem;
  background: rgba(45, 155, 106, 0.12);
}

.card h3 { color: var(--forest); }
.card p { color: var(--ink-soft); font-size: 0.92rem; margin-top: 0.4rem; }
.card .tag {
  display: inline-block;
  margin-top: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--leaf);
}

/* Pillar cards numbered */
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  margin-top: 1.75rem;
}

.pillar-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.35rem 1.4rem;
  border-left: 4px solid var(--leaf);
  box-shadow: var(--card-shadow);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
}

.pillar-num {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--mint);
  line-height: 1;
  min-width: 2rem;
}

.pillar-card h3 { font-size: 1.05rem; color: var(--forest); margin-bottom: 0.3rem; }
.pillar-card p { font-size: 0.88rem; color: var(--muted); }

/* ---------- Definitions ---------- */
.def-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 1.75rem;
}

.def-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--card-shadow);
}

.def-card .kind {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--leaf);
  margin-bottom: 0.5rem;
}

.def-card h3 { color: var(--forest); margin-bottom: 0.65rem; }
.def-card p { color: var(--ink-soft); font-size: 0.95rem; }

.frame-banner {
  margin-top: 1.5rem;
  background: var(--forest);
  color: var(--cream);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  text-align: center;
  line-height: 1.45;
}

/* ---------- Lifecycle stages ---------- */
.stages {
  display: grid;
  gap: 0.65rem;
  margin-top: 1.75rem;
  counter-reset: stage;
}

.stage {
  background: var(--white);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(13, 59, 46, 0.08);
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.stage.open { box-shadow: var(--card-shadow); }

.stage-head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 1rem 1.25rem;
  cursor: pointer;
  user-select: none;
  width: 100%;
  background: none;
  border: none;
  font-family: var(--font-body);
  text-align: left;
  color: inherit;
}

.stage-head:hover { background: rgba(45, 155, 106, 0.05); }

.stage-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: white;
  background: var(--forest);
  width: 2rem;
  height: 2rem;
  border-radius: 7px;
  display: grid;
  place-items: center;
}

.stage-title { font-weight: 600; color: var(--forest); font-size: 1rem; }
.stage-prompt {
  font-size: 0.85rem;
  color: var(--muted);
  font-style: italic;
  display: none;
}
@media (min-width: 700px) {
  .stage-prompt { display: block; }
}

.stage-chevron {
  color: var(--muted);
  transition: transform 0.2s;
  font-size: 0.85rem;
}
.stage.open .stage-chevron { transform: rotate(180deg); }

.stage-body {
  display: none;
  padding: 0 1.25rem 1.25rem 4.25rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
}
.stage.open .stage-body { display: block; }

/* ---------- Sectors ---------- */
.sector-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin: 1.5rem 0 1.25rem;
}

.sector-tab {
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  border: 1.5px solid var(--sand);
  background: var(--white);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  color: var(--ink-soft);
  transition: all 0.15s;
}

.sector-tab[data-sector="solar"].active { background: var(--solar); border-color: var(--solar); color: white; }
.sector-tab[data-sector="textiles"].active { background: var(--textile); border-color: var(--textile); color: white; }
.sector-tab[data-sector="ev"].active { background: var(--ev); border-color: var(--ev); color: white; }
.sector-tab:hover:not(.active) { border-color: var(--muted); }

.sector-panel { display: none; }
.sector-panel.active { display: block; }

.sector-hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.mini-stat {
  background: var(--white);
  border-radius: var(--radius-sm);
  padding: 1rem;
  border: 1px solid rgba(13, 59, 46, 0.08);
}
.mini-stat .v {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--forest);
}
.mini-stat .l { font-size: 0.78rem; color: var(--muted); margin-top: 0.2rem; }

.headline-list {
  display: grid;
  gap: 0.55rem;
  margin-top: 1rem;
}

.headline-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  background: var(--white);
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(13, 59, 46, 0.07);
  align-items: start;
}

.headline-item .n {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--leaf);
  background: rgba(45, 155, 106, 0.12);
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 5px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.headline-item p { font-size: 0.9rem; color: var(--ink-soft); }

/* ---------- Matrix ---------- */
.matrix-wrap {
  overflow-x: auto;
  margin-top: 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  border: 1px solid rgba(13, 59, 46, 0.08);
}

.matrix {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  background: var(--white);
  font-size: 0.82rem;
}

.matrix th, .matrix td {
  padding: 0.85rem 0.9rem;
  border: 1px solid rgba(13, 59, 46, 0.08);
  vertical-align: top;
  text-align: left;
}

.matrix thead th {
  background: var(--forest);
  color: var(--cream);
  font-weight: 600;
  font-size: 0.85rem;
  position: sticky;
  top: 0;
}

.matrix tbody th {
  background: var(--cream-dark);
  color: var(--forest);
  font-weight: 600;
  width: 140px;
  font-size: 0.8rem;
}

.matrix td {
  color: var(--ink-soft);
  line-height: 1.45;
  cursor: pointer;
  transition: background 0.15s;
}

.matrix td:hover,
.matrix td.selected {
  background: rgba(45, 155, 106, 0.1);
}

.matrix td.selected {
  outline: 2px solid var(--leaf);
  outline-offset: -2px;
}

.matrix-detail {
  margin-top: 1.25rem;
  background: var(--forest);
  color: var(--cream);
  border-radius: var(--radius);
  padding: 1.35rem 1.5rem;
  display: none;
}

.matrix-detail.visible { display: block; }
.matrix-detail .md-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mint);
  margin-bottom: 0.4rem;
}
.matrix-detail p { font-size: 0.95rem; line-height: 1.55; }

/* ---------- Three lenses ---------- */
.lenses {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.75rem;
}

.lens {
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  color: white;
}

.lens.social { background: linear-gradient(145deg, #2a6f5a, #1a8a62); }
.lens.technical { background: linear-gradient(145deg, #1e4d7b, #2d6db5); }
.lens.business { background: linear-gradient(145deg, #8a5a12, #c4891a); }

.lens h3 { margin: 0.5rem 0; font-size: 1.2rem; }
.lens p { font-size: 0.88rem; opacity: 0.9; }

/* ---------- Programme map ---------- */
.prog-table-wrap {
  overflow-x: auto;
  margin-top: 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
}

.prog-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  background: var(--white);
  font-size: 0.85rem;
}

.prog-table th, .prog-table td {
  padding: 0.7rem 0.85rem;
  border: 1px solid rgba(13, 59, 46, 0.08);
  text-align: left;
}

.prog-table thead th {
  background: var(--forest);
  color: var(--cream);
  font-weight: 600;
}

.prog-table tbody tr:nth-child(even) { background: rgba(45, 155, 106, 0.04); }
.prog-table .today {
  background: rgba(45, 155, 106, 0.15) !important;
  font-weight: 600;
  color: var(--forest);
}

/* ---------- Activity box ---------- */
.activity {
  background: linear-gradient(135deg, #eef8f1, #f6f3eb);
  border: 1.5px solid var(--sage);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-top: 1.5rem;
}

.activity h3 { color: var(--forest); margin-bottom: 0.75rem; }

.steps {
  display: grid;
  gap: 0.65rem;
  margin: 1rem 0;
}

.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  align-items: start;
}

.step .s {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: var(--forest);
  color: white;
  font-size: 0.8rem;
  font-weight: 600;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.reflection {
  margin-top: 1.25rem;
  padding: 1rem 1.15rem;
  background: var(--white);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--solar);
  font-style: italic;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

/* ---------- Local anchors ---------- */
.anchor-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.anchor {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.35rem;
  box-shadow: var(--card-shadow);
  border-top: 3px solid var(--leaf);
}

.anchor.solar { border-top-color: var(--solar); }
.anchor.textile { border-top-color: var(--textile); }
.anchor.ev { border-top-color: var(--ev); }

.anchor h3 { color: var(--forest); font-size: 1.05rem; }
.anchor .big {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--emerald);
  margin: 0.5rem 0;
}
.anchor ul { margin-top: 0.75rem; }
.anchor li {
  font-size: 0.85rem;
  color: var(--ink-soft);
  padding: 0.3rem 0;
  border-bottom: 1px solid rgba(13, 59, 46, 0.06);
  padding-left: 0.9rem;
  position: relative;
}
.anchor li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--leaf);
  font-weight: 700;
}

/* ---------- Survey ---------- */
.survey-form {
  max-width: 720px;
  margin: 1.75rem auto 0;
}

.survey-section {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--card-shadow);
  border: 1px solid rgba(13, 59, 46, 0.06);
}

.survey-section h3 {
  color: var(--forest);
  margin-bottom: 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.survey-section .sec-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(45, 155, 106, 0.12);
  color: var(--emerald);
  padding: 0.25rem 0.55rem;
  border-radius: 5px;
}

.q {
  margin-top: 1.35rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--sand);
}

.q:first-of-type { border-top: none; padding-top: 0.5rem; }

.q-label {
  font-weight: 600;
  color: var(--forest);
  margin-bottom: 0.65rem;
  display: block;
  font-size: 0.95rem;
}

.q-hint {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.65rem;
  font-weight: 400;
}

.radio-grid, .check-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 0.5rem;
}

.radio-opt, .check-opt {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.85rem;
  border: 1.5px solid var(--sand);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.88rem;
  transition: border-color 0.15s, background 0.15s;
  background: var(--cream);
}

.radio-opt:has(input:checked),
.check-opt:has(input:checked) {
  border-color: var(--leaf);
  background: rgba(45, 155, 106, 0.1);
}

.likert {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  align-items: center;
}

.likert label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  cursor: pointer;
  font-size: 0.72rem;
  color: var(--muted);
  min-width: 3.2rem;
}

.likert input[type="radio"] {
  appearance: none;
  width: 1.5rem;
  height: 1.5rem;
  border: 2px solid var(--sage);
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.15s;
}
.likert input[type="radio"]:checked {
  border-color: var(--forest);
  background: var(--forest);
  box-shadow: inset 0 0 0 3px white;
}

.range-row {
  display: grid;
  grid-template-columns: 140px 1fr 50px;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 0.55rem;
  font-size: 0.88rem;
}

.range-row input[type="range"] {
  accent-color: var(--forest);
  width: 100%;
}

.range-row .pct {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--forest);
  font-weight: 600;
  text-align: right;
}

.pct-total {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
}
.pct-total.ok { color: var(--leaf); }
.pct-total.bad { color: #c0392b; }

textarea, select, input[type="text"] {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--sand);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.92rem;
  background: var(--cream);
  color: var(--ink);
  resize: vertical;
}
textarea:focus, select:focus, input:focus {
  outline: none;
  border-color: var(--leaf);
  background: white;
}

.score-panel {
  display: none;
  margin-top: 1.5rem;
  background: var(--forest);
  color: var(--cream);
  border-radius: var(--radius);
  padding: 1.75rem;
}

.score-panel.visible { display: block; }

.score-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}

.score-item {
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-sm);
  padding: 1.15rem;
  text-align: center;
}

.score-item .sv {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 600;
  color: var(--mint);
}

.score-item .sl {
  font-size: 0.8rem;
  opacity: 0.85;
  margin-top: 0.25rem;
}

/* ---------- Page header (inner pages) ---------- */
.page-header {
  padding: 3.5rem 0 2.5rem;
  background: linear-gradient(160deg, var(--forest-deep) 0%, var(--forest) 60%, #145a42 100%);
  color: var(--cream);
}

.page-header h1 { margin-bottom: 0.65rem; }
.page-header .lead { color: var(--sage); }
.page-header .eyebrow { color: var(--mint); }

.breadcrumb {
  font-size: 0.82rem;
  color: var(--sage);
  margin-bottom: 1rem;
}
.breadcrumb a { color: var(--mint); }
.breadcrumb span { opacity: 0.6; margin: 0 0.4rem; }

/* ---------- Callout ---------- */
.callout {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem;
  border-left: 4px solid var(--solar);
  box-shadow: var(--card-shadow);
  margin: 1.5rem 0;
}

.callout .icon { font-size: 1.4rem; }
.callout p { font-size: 0.95rem; color: var(--ink-soft); }
.callout strong { color: var(--forest); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--forest-deep);
  color: var(--sage);
  padding: 2.5rem 0 2rem;
  margin-top: 2rem;
  font-size: 0.88rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.site-footer h4 {
  color: var(--cream);
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}

.site-footer a { color: var(--sage); }
.site-footer a:hover { color: var(--mint); }

.footer-links li { margin-bottom: 0.4rem; }

.footer-bottom {
  border-top: 1px solid rgba(168, 213, 181, 0.15);
  padding-top: 1.25rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.8rem;
  opacity: 0.8;
}

/* ---------- Two-col ---------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
  margin-top: 1.5rem;
}

/* ---------- Sources ---------- */
.sources {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  line-height: 1.5;
}

/* ---------- TOC sidebar-ish ---------- */
.toc {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 1.25rem 0 0;
}

.toc a {
  font-size: 0.8rem;
  padding: 0.4rem 0.8rem;
  background: rgba(255,255,255,0.1);
  border-radius: 999px;
  color: var(--sage);
  border: 1px solid rgba(168, 213, 181, 0.25);
}
.toc a:hover { background: rgba(255,255,255,0.18); color: white; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-grid,
  .def-grid,
  .two-col,
  .lenses,
  .anchor-grid,
  .stats,
  .score-grid,
  .sector-hero-stats,
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .stats { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 700px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: var(--cream);
    flex-direction: column;
    align-items: stretch;
    padding: 0.75rem 1.25rem 1.25rem;
    border-bottom: 1px solid var(--sand);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.7rem 1rem; }

  .hero-grid,
  .def-grid,
  .two-col,
  .lenses,
  .anchor-grid,
  .stats,
  .score-grid,
  .sector-hero-stats,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .stage-body { padding-left: 1.25rem; }
  .hero { padding: 3rem 0 2.5rem; }
  .section { padding: 3rem 0; }
}

/* Print */
@media print {
  .site-nav, .nav-toggle, .btn-row { display: none; }
  body { background: white; font-size: 12pt; }
  .card, .stage, .survey-section { box-shadow: none; break-inside: avoid; }
}