/* ═══════════════════════════════════════════════════
   STRATUM ENERGY & LOGISTICS: SHARED STYLESHEET
   Design tokens carried forward as-is from Brand Book v2
   and the original index.html. Do not alter tokens here
   without sign-off. Every page on the site depends on them.
═══════════════════════════════════════════════════ */

:root {
  --navy:       #0D1F2D;
  --mid-navy:   #1A3348;
  --teal:       #0B7A5E;
  --teal-2:     #0F9B76;
  --bright:     #4EC4A4;
  --cream:      #F5F0E8;
  --steel:      #8A9DAE;
  --light-grey: #D6DDE3;
  --stone:      #E8EDF0;
  --white:      #FFFFFF;

  --display:    'Bricolage Grotesque', sans-serif;
  --body:       'Instrument Sans', sans-serif;
  --label:      'Jura', Arial, sans-serif;
  --serif:      'Gloock', serif;

  --nav-h:      72px;
  --max-w:      1200px;
  --section-v:  96px;
}

/* ═══════════════════════════════
   RESET & BASE
═══════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--body);
  color: var(--navy);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul, ol { list-style: none; }
input, select, textarea { font-family: inherit; }

/* Visible keyboard focus everywhere: accessibility floor */
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--bright);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ═══════════════════════════════
   LAYOUT UTILITIES
═══════════════════════════════ */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 48px; }
@media (max-width: 768px) {
  .container { padding: 0 24px; }
  :root { --section-v: 64px; }
}
.section-label {
  font-family: var(--label);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 16px;
  display: block;
}
.section-label.on-dark { color: var(--bright); }
.section-header { max-width: 680px; margin-bottom: 64px; }
.section-header h2 {
  font-family: var(--display);
  font-size: clamp(26px, 3vw, 40px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--navy);
  margin-bottom: 16px;
}
.section-header p { font-size: 16px; line-height: 1.75; color: #445; }
.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--teal); color: var(--white); padding: 10px 18px; z-index: 999;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ═══════════════════════════════
   LOGO LOCKUP
═══════════════════════════════ */
.logo-lockup { display: flex; align-items: center; gap: 0; flex-shrink: 0; }
.logo-lockup svg.strata-mark { flex-shrink: 0; }
.logo-sep { width: 1.5px; background: var(--teal); margin: 0 14px; align-self: stretch; }
.logo-text { display: flex; flex-direction: column; justify-content: center; line-height: 1; }
.logo-text .wm-stratum { font-family: Arial, sans-serif; font-weight: 700; letter-spacing: 0.08em; color: var(--navy); text-transform: uppercase; }
.logo-text .wm-energy { font-family: Arial, sans-serif; font-weight: 700; letter-spacing: 0.08em; color: var(--teal); text-transform: uppercase; }
.logo-text .wm-logistics { font-family: Arial, sans-serif; font-weight: 400; color: var(--steel); text-transform: uppercase; letter-spacing: 0.06em; }
.logo-reversed .wm-stratum { color: var(--cream); }
.logo-reversed .wm-energy { color: var(--bright); }

/* ═══════════════════════════════
   NAVIGATION
═══════════════════════════════ */
#nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  height: var(--nav-h); display: flex; align-items: center;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--light-grey);
  transition: background 0.3s, border-color 0.3s, box-shadow 0.3s;
}
#nav.scrolled { box-shadow: 0 2px 24px rgba(13,31,45,0.10); }
#nav .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { font-family: var(--body); font-size: 13px; font-weight: 500; color: var(--navy); letter-spacing: 0.01em; transition: color 0.2s; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--teal); }
.nav-right { display: flex; align-items: center; gap: 16px; }
.btn-primary, .btn-secondary {
  display: inline-flex; align-items: center; gap: 8px; padding: 10px 22px;
  font-family: var(--body); font-size: 13px; font-weight: 700; letter-spacing: 0.02em;
  border-radius: 3px; transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.15s;
}
.btn-primary { background: var(--teal); color: var(--white); }
.btn-primary:hover { background: var(--teal-2); transform: translateY(-1px); }
.btn-secondary { border: 1.5px solid var(--navy); color: var(--navy); }
.btn-secondary:hover { border-color: var(--teal); color: var(--teal); transform: translateY(-1px); }

.hamburger { display: none; flex-direction: column; gap: 5px; padding: 4px; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--navy); transition: all 0.3s; }
.mobile-menu {
  display: none; position: fixed; top: var(--nav-h); left: 0; right: 0;
  background: var(--white); border-bottom: 1px solid var(--light-grey);
  padding: 24px 24px 32px; z-index: 199; flex-direction: column; gap: 24px;
  max-height: calc(100vh - var(--nav-h)); overflow-y: auto;
}
.mobile-menu.open { display: flex; }
.mobile-menu a { font-size: 16px; font-weight: 500; color: var(--navy); padding-bottom: 16px; border-bottom: 1px solid var(--light-grey); }
.mobile-menu a:last-child { border-bottom: none; }
@media (max-width: 900px) { .nav-links { display: none; } .hamburger { display: flex; } }

/* ═══════════════════════════════
   HERO (homepage, full height)
═══════════════════════════════ */
#hero { background: var(--navy); padding-top: calc(var(--nav-h) + 80px); padding-bottom: 100px; position: relative; overflow: hidden; }
#hero::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background-image: linear-gradient(to right, rgba(11,122,94,0.06) 1px, transparent 1px), linear-gradient(to bottom, rgba(11,122,94,0.06) 1px, transparent 1px);
  background-size: 64px 64px; pointer-events: none;
}
#hero::after {
  content: ''; position: absolute; top: -120px; right: -80px; width: 560px; height: 560px;
  background: radial-gradient(ellipse at center, rgba(11,122,94,0.18) 0%, transparent 70%); pointer-events: none;
}
.hero-inner { position: relative; z-index: 2; max-width: 860px; }
.hero-eyebrow { display: flex; align-items: center; gap: 12px; margin-bottom: 32px; }
.hero-eyebrow-text { font-family: var(--label); font-size: 11px; font-weight: 400; letter-spacing: 0.2em; text-transform: uppercase; color: var(--bright); }
.hero-eyebrow-line { width: 48px; height: 1px; background: var(--teal); }
.hero-h1 { font-family: var(--display); font-size: clamp(38px, 5.5vw, 68px); font-weight: 700; line-height: 1.08; color: var(--cream); letter-spacing: -0.02em; margin-bottom: 28px; }
.hero-h1 em { font-style: normal; color: var(--bright); }
.hero-body { font-family: var(--body); font-size: 17px; font-weight: 400; line-height: 1.75; color: var(--steel); max-width: 600px; margin-bottom: 48px; }
.hero-ctas { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.btn-hero-primary, .btn-hero-secondary {
  display: inline-flex; align-items: center; gap: 10px; padding: 14px 30px;
  font-family: var(--body); font-size: 14px; font-weight: 700; letter-spacing: 0.02em;
  border-radius: 3px; transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.15s, box-shadow 0.2s;
}
.btn-hero-primary { background: var(--teal); color: var(--white); }
.btn-hero-primary:hover { background: var(--teal-2); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(11,122,94,0.35); }
.btn-hero-secondary { border: 1.5px solid rgba(255,255,255,0.22); color: var(--cream); }
.btn-hero-secondary:hover { border-color: var(--bright); color: var(--bright); transform: translateY(-2px); }
.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 80px; border-top: 1px solid rgba(138,157,174,0.2); padding-top: 48px; max-width: 680px; }
.hero-stat { padding-right: 40px; }
.hero-stat + .hero-stat { padding-left: 40px; border-left: 1px solid rgba(138,157,174,0.2); }
.hero-stat-num { font-family: var(--display); font-size: 32px; font-weight: 700; color: var(--cream); line-height: 1; margin-bottom: 6px; }
.hero-stat-num span { color: var(--bright); }
.hero-stat-label { font-family: var(--label); font-size: 10px; font-weight: 400; letter-spacing: 0.18em; text-transform: uppercase; color: var(--steel); line-height: 1.4; }
@media (max-width: 600px) {
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .hero-stats .hero-stat:last-child { grid-column: 1 / -1; border-left: none; padding-left: 0; padding-top: 24px; border-top: 1px solid rgba(138,157,174,0.2); }
}

/* ═══════════════════════════════
   PAGE HERO (sub-pages, shorter, same system)
═══════════════════════════════ */
#page-hero { background: var(--navy); padding-top: calc(var(--nav-h) + 64px); padding-bottom: 72px; position: relative; overflow: hidden; }
#page-hero::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background-image: linear-gradient(to right, rgba(11,122,94,0.06) 1px, transparent 1px), linear-gradient(to bottom, rgba(11,122,94,0.06) 1px, transparent 1px);
  background-size: 64px 64px; pointer-events: none;
}
#page-hero::after {
  content: ''; position: absolute; top: -100px; right: -60px; width: 460px; height: 460px;
  background: radial-gradient(ellipse at center, rgba(11,122,94,0.18) 0%, transparent 70%); pointer-events: none;
}
.page-hero-inner { position: relative; z-index: 2; max-width: 760px; }
.page-hero-inner .hero-eyebrow { margin-bottom: 24px; }
.page-hero-h1 { font-family: var(--display); font-size: clamp(32px, 4.6vw, 54px); font-weight: 700; line-height: 1.12; color: var(--cream); letter-spacing: -0.02em; margin-bottom: 20px; }
.page-hero-h1 em { font-style: normal; color: var(--bright); }
.page-hero-sub { font-size: 16.5px; line-height: 1.75; color: var(--steel); max-width: 560px; margin-bottom: 36px; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-family: var(--label); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--steel); margin-bottom: 28px; }
.breadcrumb a { color: var(--bright); }
.breadcrumb a:hover { text-decoration: underline; }

/* ═══════════════════════════════
   GENERIC TEXT SECTIONS
═══════════════════════════════ */
.section { padding: var(--section-v) 0; background: var(--white); }
.section.bg-cream { background: var(--cream); }
.section.bg-navy { background: var(--navy); position: relative; overflow: hidden; }
.section.bg-stone { background: var(--stone); }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
.two-col.align-center { align-items: center; }
@media (max-width: 860px) { .two-col { grid-template-columns: 1fr; gap: 48px; } }
.prose h2 { font-family: var(--display); font-size: clamp(26px, 3vw, 38px); font-weight: 700; letter-spacing: -0.02em; line-height: 1.18; color: var(--navy); margin-bottom: 20px; }
.prose p { font-size: 16px; line-height: 1.8; color: #334; margin-bottom: 18px; }
.prose p:last-child { margin-bottom: 0; }
.prose.on-dark h2 { color: var(--cream); }
.prose.on-dark p { color: var(--steel); }
.prose ul { margin: 4px 0 18px 0; }
.prose li { font-size: 15.5px; line-height: 1.75; color: #334; padding-left: 22px; position: relative; margin-bottom: 10px; }
.prose li::before { content: ''; position: absolute; left: 0; top: 9px; width: 8px; height: 2px; background: var(--teal); }
.prose.on-dark li { color: var(--steel); }
.prose.on-dark li::before { background: var(--bright); }

.zero-cost-badge { display: inline-flex; align-items: center; gap: 10px; background: var(--cream); border: 1.5px solid var(--teal); border-radius: 4px; padding: 14px 20px; margin-top: 8px; }
.zero-cost-badge svg { flex-shrink: 0; }
.zero-cost-badge-text { font-family: var(--body); font-size: 14px; font-weight: 700; color: var(--teal); line-height: 1.3; }
.zero-cost-badge-sub { font-size: 12px; font-weight: 400; color: var(--steel); }
.bg-navy .zero-cost-badge { background: rgba(78,196,164,0.08); border-color: var(--bright); }
.bg-navy .zero-cost-badge-text { color: var(--bright); }

/* ═══════════════════════════════
   PILLARS / PROP CARDS
═══════════════════════════════ */
.pillar-list { display: flex; flex-direction: column; gap: 2px; }
.pillar { display: flex; align-items: flex-start; gap: 20px; padding: 28px 24px; border-left: 3px solid var(--light-grey); transition: border-color 0.25s, background 0.25s; }
.pillar:hover { border-left-color: var(--teal); background: rgba(11,122,94,0.03); }
.pillar-num { font-family: var(--label); font-size: 11px; font-weight: 500; letter-spacing: 0.15em; color: var(--teal); padding-top: 3px; flex-shrink: 0; }
.pillar h3 { font-family: var(--body); font-size: 16px; font-weight: 700; color: var(--navy); margin-bottom: 6px; }
.pillar p { font-size: 14px; line-height: 1.7; color: var(--steel); }

/* ═══════════════════════════════
   STEPS GRID (homepage preview)
═══════════════════════════════ */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; position: relative; }
.steps-grid::before {
  content: ''; position: absolute; top: 28px; left: calc(12.5% + 20px); right: calc(12.5% + 20px); height: 1px;
  background: linear-gradient(to right, var(--teal), var(--teal-2)); z-index: 0;
}
.step { padding: 0 24px 0 0; position: relative; z-index: 1; }
.step-num {
  width: 56px; height: 56px; border-radius: 50%; background: var(--white); border: 2px solid var(--teal);
  display: flex; align-items: center; justify-content: center; font-family: var(--display); font-size: 18px;
  font-weight: 700; color: var(--teal); margin-bottom: 24px; flex-shrink: 0;
}
.step h3 { font-family: var(--body); font-size: 15px; font-weight: 700; color: var(--navy); margin-bottom: 10px; line-height: 1.3; }
.step p { font-size: 13.5px; line-height: 1.7; color: #556; }
@media (max-width: 860px) { .steps-grid { grid-template-columns: 1fr 1fr; gap: 40px; } .steps-grid::before { display: none; } }
@media (max-width: 520px) { .steps-grid { grid-template-columns: 1fr; } }

/* ═══════════════════════════════
   PROCESS STEPPER (How We Work, interactive)
═══════════════════════════════ */
.stepper { display: grid; grid-template-columns: 280px 1fr; gap: 56px; align-items: start; }
@media (max-width: 860px) { .stepper { grid-template-columns: 1fr; gap: 24px; } }
.stepper-nav { display: flex; flex-direction: column; gap: 4px; position: sticky; top: calc(var(--nav-h) + 24px); }
@media (max-width: 860px) { .stepper-nav { position: static; flex-direction: row; overflow-x: auto; gap: 8px; padding-bottom: 4px; } }
.stepper-btn {
  display: flex; align-items: center; gap: 14px; text-align: left; padding: 16px 18px;
  border-left: 3px solid var(--light-grey); background: transparent; transition: border-color 0.2s, background 0.2s;
  width: 100%; font-family: var(--body); color: var(--navy);
}
@media (max-width: 860px) { .stepper-btn { flex-shrink: 0; min-width: 220px; border-left: none; border-bottom: 3px solid var(--light-grey); } }
.stepper-btn:hover { background: rgba(11,122,94,0.04); }
.stepper-btn[aria-selected="true"] { border-left-color: var(--teal); background: rgba(11,122,94,0.06); }
@media (max-width: 860px) { .stepper-btn[aria-selected="true"] { border-bottom-color: var(--teal); } }
.stepper-btn-num {
  width: 32px; height: 32px; border-radius: 50%; border: 2px solid var(--light-grey); flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-family: var(--display); font-size: 13px; font-weight: 700;
  color: var(--steel); transition: border-color 0.2s, color 0.2s;
}
.stepper-btn[aria-selected="true"] .stepper-btn-num { border-color: var(--teal); color: var(--teal); }
.stepper-btn-label { font-size: 14px; font-weight: 700; line-height: 1.3; }
.stepper-btn-sub { font-size: 11.5px; color: var(--steel); margin-top: 2px; display: block; }
.stepper-panels { position: relative; min-height: 320px; }
.stepper-panel { display: none; background: var(--stone); border-radius: 4px; padding: 40px; border-top: 3px solid var(--teal); }
.stepper-panel.active { display: block; animation: panelIn 0.35s ease; }
@keyframes panelIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.stepper-panel-eyebrow { font-family: var(--label); font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--teal); margin-bottom: 10px; display: block; }
.stepper-panel h3 { font-family: var(--display); font-size: 24px; font-weight: 700; color: var(--navy); margin-bottom: 16px; letter-spacing: -0.01em; }
.stepper-panel p { font-size: 15px; line-height: 1.8; color: #334; margin-bottom: 14px; }
.stepper-panel p:last-of-type { margin-bottom: 0; }
.stepper-panel-meta { display: flex; gap: 24px; margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--light-grey); flex-wrap: wrap; }
.stepper-panel-meta-item { font-size: 12px; color: var(--steel); }
.stepper-panel-meta-item strong { display: block; font-family: var(--label); font-size: 9.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--teal); margin-bottom: 4px; }
.stepper-progress-controls { display: flex; gap: 12px; margin-top: 28px; }
.stepper-progress-btn {
  font-family: var(--body); font-size: 13px; font-weight: 700; color: var(--teal);
  display: inline-flex; align-items: center; gap: 6px; padding: 8px 4px;
}
.stepper-progress-btn:hover { color: var(--teal-2); }
.stepper-progress-btn[disabled] { color: var(--light-grey); cursor: not-allowed; }

/* ═══════════════════════════════
   WHY STRATUM / DIFF GRID
═══════════════════════════════ */
.diff-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px; background: var(--light-grey); border: 1px solid var(--light-grey); }
.diff-card { background: var(--white); padding: 48px 40px; transition: background 0.2s; }
.diff-card:hover { background: #fafcfb; }
.diff-icon { width: 48px; height: 48px; background: rgba(11,122,94,0.08); border-radius: 4px; display: flex; align-items: center; justify-content: center; margin-bottom: 20px; }
.diff-card h3 { font-family: var(--body); font-size: 18px; font-weight: 700; color: var(--navy); margin-bottom: 12px; line-height: 1.25; }
.diff-card p { font-size: 14.5px; line-height: 1.75; color: #556; }
@media (max-width: 700px) { .diff-grid { grid-template-columns: 1fr; } }

/* ═══════════════════════════════
   PULL QUOTE
═══════════════════════════════ */
.pull-quote-section { background: var(--cream); padding: 80px 0; }
.pull-quote { max-width: 760px; margin: 0 auto; text-align: center; }
.pull-quote blockquote { font-family: var(--serif); font-size: clamp(20px, 2.5vw, 30px); font-weight: 400; line-height: 1.55; color: var(--navy); letter-spacing: -0.01em; margin-bottom: 20px; }
.pull-quote cite { font-family: var(--label); font-size: 11px; font-weight: 400; letter-spacing: 0.18em; text-transform: uppercase; color: var(--teal); font-style: normal; }

/* ═══════════════════════════════
   SECTOR SELECTOR (interactive)
═══════════════════════════════ */
.sector-tabs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 32px; }
@media (max-width: 700px) { .sector-tabs { grid-template-columns: repeat(2, 1fr); } }
.sector-tab {
  background: var(--stone); border-radius: 4px; padding: 22px 18px; border-bottom: 3px solid transparent;
  text-align: left; transition: border-color 0.25s, background 0.25s, transform 0.2s; display: flex; flex-direction: column; gap: 10px;
}
.sector-tab:hover { transform: translateY(-2px); }
.sector-tab[aria-pressed="true"] { border-bottom-color: var(--teal); background: var(--cream); }
.sector-tab svg { width: 32px; height: 32px; }
.sector-tab-name { font-family: var(--body); font-size: 14px; font-weight: 700; color: var(--navy); }
.sector-panel {
  background: var(--white); border: 1px solid var(--light-grey); border-radius: 4px; padding: 40px;
  display: none;
}
.sector-panel.active { display: grid; grid-template-columns: 2fr 1fr; gap: 40px; animation: panelIn 0.35s ease; }
@media (max-width: 700px) { .sector-panel.active { grid-template-columns: 1fr; gap: 24px; } }
.sector-panel h3 { font-family: var(--display); font-size: 22px; font-weight: 700; color: var(--navy); margin-bottom: 12px; }
.sector-panel p { font-size: 15px; line-height: 1.75; color: #334; margin-bottom: 12px; }
.sector-panel-stats { display: flex; flex-direction: column; gap: 16px; border-left: 1px solid var(--light-grey); padding-left: 32px; }
@media (max-width: 700px) { .sector-panel-stats { border-left: none; border-top: 1px solid var(--light-grey); padding-left: 0; padding-top: 20px; } }
.sector-panel-stat-label { font-family: var(--label); font-size: 9.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--teal); margin-bottom: 4px; }
.sector-panel-stat-value { font-family: var(--body); font-size: 14px; font-weight: 600; color: var(--navy); }

/* ═══════════════════════════════
   SUPPLY ORIGIN DIAGRAM (interactive)
═══════════════════════════════ */
#supply { background: var(--navy); padding: var(--section-v) 0; position: relative; overflow: hidden; }
#supply::before {
  content: ''; position: absolute; bottom: -80px; left: -80px; width: 400px; height: 400px;
  background: radial-gradient(ellipse at center, rgba(11,122,94,0.15) 0%, transparent 70%); pointer-events: none;
}
.supply-diagram { position: relative; z-index: 2; }
.supply-route-track { position: relative; height: 4px; background: rgba(255,255,255,0.08); border-radius: 2px; margin: 56px 0 0; }
.supply-route-track::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to right, var(--bright), var(--teal)); border-radius: 2px; opacity: 0.6; }
.supply-route-dest {
  position: absolute; right: -6px; top: 50%; transform: translateY(-50%);
  width: 16px; height: 16px; border-radius: 50%; background: var(--cream); border: 3px solid var(--navy);
}
.supply-nodes { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: -10px; position: relative; }
.supply-node-btn {
  display: flex; flex-direction: column; align-items: center; gap: 14px; padding-top: 18px; text-align: center;
}
.supply-node-dot {
  width: 18px; height: 18px; border-radius: 50%; background: rgba(255,255,255,0.15); border: 2px solid var(--steel);
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}
.supply-node-btn[aria-pressed="true"] .supply-node-dot { background: var(--bright); border-color: var(--bright); transform: scale(1.2); box-shadow: 0 0 0 6px rgba(78,196,164,0.18); }
.supply-node-flag { font-size: 22px; line-height: 1; }
.supply-node-name { font-family: var(--label); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--steel); transition: color 0.2s; }
.supply-node-btn[aria-pressed="true"] .supply-node-name { color: var(--bright); }
.supply-node-priority {
  font-family: var(--label); font-size: 8.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--bright);
  background: rgba(78,196,164,0.12); border: 1px solid rgba(78,196,164,0.3); padding: 2px 8px; border-radius: 2px;
}
@media (max-width: 700px) { .supply-nodes { grid-template-columns: repeat(2, 1fr); row-gap: 28px; } .supply-route-track { display: none; } }

.supply-detail {
  margin-top: 40px; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); border-radius: 4px;
  padding: 32px; display: none;
}
.supply-detail.active { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; animation: panelIn 0.35s ease; }
@media (max-width: 700px) { .supply-detail.active { grid-template-columns: 1fr; } }
.supply-detail h4 { font-family: var(--body); font-size: 17px; font-weight: 700; color: var(--cream); margin-bottom: 10px; }
.supply-detail p { font-size: 14px; line-height: 1.7; color: var(--steel); margin-bottom: 10px; }
.supply-detail-badge { display: inline-block; margin-top: 6px; }

/* ═══════════════════════════════
   COMPLIANCE ACCORDION
═══════════════════════════════ */
.compliance-accordion { display: flex; flex-direction: column; gap: 12px; }
.accordion-item { background: var(--white); border-radius: 3px; border: 1px solid var(--light-grey); overflow: hidden; }
.accordion-trigger {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 24px; text-align: left; font-family: var(--body); font-size: 14.5px; font-weight: 700; color: var(--navy);
  border-top: 3px solid var(--teal);
}
.accordion-trigger-icon { flex-shrink: 0; transition: transform 0.25s; color: var(--teal); }
.accordion-trigger[aria-expanded="true"] .accordion-trigger-icon { transform: rotate(45deg); }
.accordion-panel { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.accordion-panel-inner { padding: 0 24px 22px; }
.accordion-panel-inner p { font-size: 13.5px; line-height: 1.7; color: var(--steel); }

/* ═══════════════════════════════
   EN590 SPEC CHECKER (Buyers page)
═══════════════════════════════ */
.spec-checker { background: var(--navy); border-radius: 6px; padding: 44px; position: relative; overflow: hidden; }
.spec-checker::after {
  content: ''; position: absolute; top: -80px; right: -60px; width: 320px; height: 320px;
  background: radial-gradient(ellipse, rgba(11,122,94,0.18) 0%, transparent 70%); pointer-events: none;
}
.spec-checker-head { position: relative; z-index: 2; max-width: 640px; margin-bottom: 32px; }
.spec-checker-head h3 { font-family: var(--display); font-size: 24px; font-weight: 700; color: var(--cream); margin-bottom: 10px; }
.spec-checker-head p { font-size: 14.5px; line-height: 1.7; color: var(--steel); }
.spec-checker-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
@media (max-width: 760px) { .spec-checker-grid { grid-template-columns: 1fr; } }
.spec-checker-form label { font-family: var(--label); font-size: 10px; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--steel); display: block; margin-bottom: 10px; }
.spec-options { display: flex; flex-direction: column; gap: 8px; }
.spec-option {
  display: flex; align-items: center; gap: 12px; padding: 13px 16px; background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12); border-radius: 3px; cursor: pointer; transition: border-color 0.2s, background 0.2s;
}
.spec-option:hover { border-color: rgba(78,196,164,0.4); }
.spec-option input { accent-color: var(--bright); width: 16px; height: 16px; flex-shrink: 0; }
.spec-option span { font-size: 14px; color: var(--cream); }
.spec-result { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.1); border-radius: 4px; padding: 26px; min-height: 100%; }
.spec-result-label { font-family: var(--label); font-size: 9.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--teal); margin-bottom: 12px; }
.spec-result-status { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.spec-result-status-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.spec-result-status.pass .spec-result-status-dot { background: var(--bright); }
.spec-result-status.fail .spec-result-status-dot { background: #E08B6B; }
.spec-result-status.neutral .spec-result-status-dot { background: var(--steel); }
.spec-result-status-text { font-family: var(--body); font-size: 15px; font-weight: 700; color: var(--cream); }
.spec-result p { font-size: 13.5px; line-height: 1.7; color: var(--steel); margin-bottom: 0; }
.spec-doc-list { margin-top: 18px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,0.1); display: flex; flex-direction: column; gap: 8px; }
.spec-doc-list li { font-size: 12.5px; color: var(--steel); padding-left: 18px; position: relative; }
.spec-doc-list li::before { content: ''; position: absolute; left: 0; top: 8px; width: 7px; height: 1.5px; background: var(--bright); }

/* ═══════════════════════════════
   SECTOR CONTEXT BANNER (Buyers page)
═══════════════════════════════ */
.sector-note { display: none; background: var(--stone); border-left: 3px solid var(--teal); padding: 16px 22px; border-radius: 3px; font-size: 14.5px; line-height: 1.6; color: #334; margin-bottom: 48px; }
.sector-note.show { display: block; }
.sector-note strong { color: var(--teal); }
.sector-note a { color: var(--navy); text-decoration: underline; }

/* ═══════════════════════════════
   INFO CARD GRID (generic 2/3/4-up)
═══════════════════════════════ */
.card-grid { display: grid; gap: 20px; }
.card-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.card-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 860px) { .card-grid.cols-3, .card-grid.cols-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .card-grid.cols-2, .card-grid.cols-3, .card-grid.cols-4 { grid-template-columns: 1fr; } }
.info-card { background: var(--stone); border-radius: 4px; padding: 28px 24px; border-bottom: 3px solid transparent; transition: border-color 0.25s, background 0.25s, transform 0.2s; }
.info-card:hover { border-bottom-color: var(--teal); background: var(--cream); transform: translateY(-3px); }
.info-card h3 { font-family: var(--body); font-size: 15px; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.info-card p { font-size: 13.5px; line-height: 1.65; color: var(--steel); }
.info-card .tag { margin-top: 14px; font-family: var(--label); font-size: 10px; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--teal); }

/* Sector / Why-Stratum style icon cards (white bg, border) */
.sectors-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
@media (max-width: 860px) { .sectors-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 500px) { .sectors-grid { grid-template-columns: 1fr; } }
.sector-card { background: var(--stone); border-radius: 4px; padding: 32px 24px; border-bottom: 3px solid transparent; transition: border-color 0.25s, background 0.25s, transform 0.2s; }
.sector-card:hover { border-bottom-color: var(--teal); background: var(--cream); transform: translateY(-4px); }
.sector-icon { width: 44px; height: 44px; margin-bottom: 16px; }
.sector-card h3 { font-family: var(--body); font-size: 15px; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.sector-card p { font-size: 13px; line-height: 1.65; color: var(--steel); }
.sector-vol { margin-top: 16px; font-family: var(--label); font-size: 10px; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--teal); }

/* ═══════════════════════════════
   PROCESS / TIMELINE LIST (Suppliers, About)
═══════════════════════════════ */
.timeline { display: flex; flex-direction: column; }
.timeline-item { display: grid; grid-template-columns: 56px 1fr; gap: 24px; padding-bottom: 36px; position: relative; }
.timeline-item:not(:last-child)::before { content: ''; position: absolute; left: 27px; top: 56px; bottom: 0; width: 1px; background: var(--light-grey); }
.timeline-num { width: 56px; height: 56px; border-radius: 50%; background: var(--white); border: 2px solid var(--teal); display: flex; align-items: center; justify-content: center; font-family: var(--display); font-size: 18px; font-weight: 700; color: var(--teal); flex-shrink: 0; }
.timeline-content h3 { font-family: var(--body); font-size: 17px; font-weight: 700; color: var(--navy); margin-bottom: 8px; padding-top: 10px; }
.timeline-content p { font-size: 14.5px; line-height: 1.75; color: #556; }

/* ═══════════════════════════════
   CTA BAND (closing CTA before footer, every page)
═══════════════════════════════ */
.cta-band { background: var(--mid-navy); padding: 72px 0; position: relative; overflow: hidden; }
.cta-band::after { content: ''; position: absolute; top: -100px; right: -60px; width: 480px; height: 480px; background: radial-gradient(ellipse, rgba(11,122,94,0.14) 0%, transparent 65%); pointer-events: none; }
.cta-band-inner { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta-band h2 { font-family: var(--display); font-size: clamp(24px, 3vw, 34px); font-weight: 700; color: var(--cream); letter-spacing: -0.02em; margin-bottom: 8px; line-height: 1.2; }
.cta-band p { font-size: 15px; color: var(--steel); max-width: 480px; }
.cta-band-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ═══════════════════════════════
   COMPLIANCE GRID (re-used on About / Buyers)
═══════════════════════════════ */
.compliance-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 80px; align-items: start; }
@media (max-width: 860px) { .compliance-grid { grid-template-columns: 1fr; gap: 48px; } }

/* ═══════════════════════════════
   CONTACT SECTION + FORM
═══════════════════════════════ */
#contact { background: var(--mid-navy); padding: var(--section-v) 0; position: relative; overflow: hidden; }
#contact::after { content: ''; position: absolute; top: -100px; right: -60px; width: 480px; height: 480px; background: radial-gradient(ellipse, rgba(11,122,94,0.14) 0%, transparent 65%); pointer-events: none; }
.contact-inner { max-width: 980px; position: relative; z-index: 2; }
.contact-inner h2 { font-family: var(--display); font-size: clamp(28px, 4vw, 50px); font-weight: 700; letter-spacing: -0.02em; line-height: 1.1; color: var(--cream); margin-bottom: 20px; }
.contact-inner h2 em { font-style: normal; color: var(--bright); }
.contact-inner > p.lead { font-size: 16px; line-height: 1.75; color: var(--steel); max-width: 560px; margin-bottom: 32px; }

.contact-mode-toggle { display: inline-flex; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12); border-radius: 3px; padding: 4px; margin-bottom: 40px; }
.contact-mode-btn { padding: 10px 22px; font-family: var(--body); font-size: 13px; font-weight: 700; color: var(--steel); border-radius: 2px; transition: background 0.2s, color 0.2s; }
.contact-mode-btn[aria-pressed="true"] { background: var(--teal); color: var(--white); }

.contact-cols { display: grid; grid-template-columns: 1.2fr 1fr; gap: 56px; }
@media (max-width: 760px) { .contact-cols { grid-template-columns: 1fr; gap: 40px; } }
.contact-form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }
.contact-form-group label { font-family: var(--label); font-size: 10px; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--steel); display: block; }
.contact-form-group .req { color: var(--bright); }
.contact-form-group input, .contact-form-group select, .contact-form-group textarea {
  width: 100%; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12); border-radius: 3px;
  padding: 12px 16px; font-family: var(--body); font-size: 14px; color: var(--cream); outline: none;
  transition: border-color 0.2s, background 0.2s;
}
.contact-form-group input::placeholder, .contact-form-group textarea::placeholder { color: rgba(138,157,174,0.5); }
.contact-form-group input:focus, .contact-form-group select:focus, .contact-form-group textarea:focus { border-color: var(--teal); background: rgba(11,122,94,0.06); }
.contact-form-group select option { background: var(--navy); color: var(--cream); }
.contact-form-group textarea { resize: vertical; min-height: 100px; }
.contact-form-group input[aria-invalid="true"], .contact-form-group textarea[aria-invalid="true"] { border-color: #E08B6B; }
.field-error { font-size: 12px; color: #E08B6B; min-height: 16px; display: block; }
.form-hidden-field { display: none; }
.contact-fieldset { display: none; }
.contact-fieldset.active { display: block; }

.contact-info { display: flex; flex-direction: column; gap: 28px; }
.contact-info-item { display: flex; flex-direction: column; gap: 4px; }
.contact-info-label { font-family: var(--label); font-size: 10px; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--teal); }
.contact-info-value { font-family: var(--body); font-size: 15px; font-weight: 500; color: var(--cream); }
.contact-info-value a { color: var(--cream); transition: color 0.2s; }
.contact-info-value a:hover { color: var(--bright); }
.contact-divider { width: 40px; height: 2px; background: var(--teal); margin: 4px 0; }

.form-status { margin-top: 16px; font-size: 13.5px; padding: 12px 16px; border-radius: 3px; display: none; }
.form-status.show { display: block; }
.form-status.success { background: rgba(78,196,164,0.12); border: 1px solid rgba(78,196,164,0.35); color: var(--bright); }
.form-status.error { background: rgba(224,139,107,0.12); border: 1px solid rgba(224,139,107,0.35); color: #E08B6B; }
.form-success-state { display: none; text-align: center; padding: 40px 20px; }
.form-success-state.show { display: block; }
.form-success-state h3 { font-family: var(--display); font-size: 22px; color: var(--cream); margin-bottom: 12px; }
.form-success-state p { font-size: 14.5px; color: var(--steel); max-width: 440px; margin: 0 auto; line-height: 1.7; }

/* ═══════════════════════════════
   FOOTER
═══════════════════════════════ */
footer { background: var(--navy); border-top: 1px solid rgba(255,255,255,0.07); padding: 48px 0 32px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.07); margin-bottom: 32px; }
@media (max-width: 768px) { .footer-inner { grid-template-columns: 1fr; gap: 32px; } }
.footer-brand p { font-size: 13.5px; line-height: 1.75; color: var(--steel); margin-top: 20px; max-width: 340px; }
.footer-col h4 { font-family: var(--label); font-size: 10px; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; color: var(--bright); margin-bottom: 16px; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { font-size: 13px; color: var(--steel); transition: color 0.2s; }
.footer-col a:hover { color: var(--cream); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.footer-bottom p { font-family: var(--label); font-size: 10px; font-weight: 400; letter-spacing: 0.12em; color: rgba(138,157,174,0.6); }
.footer-acn { font-family: var(--label); font-size: 9px; font-weight: 300; letter-spacing: 0.16em; color: rgba(138,157,174,0.4); }

/* ═══════════════════════════════
   ANIMATIONS / REVEAL
═══════════════════════════════ */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.65s ease, transform 0.65s ease; }
.reveal.visible { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ═══════════════════════════════
   TOAST
═══════════════════════════════ */
.toast {
  position: fixed; bottom: 32px; right: 32px; background: var(--teal); color: var(--white);
  font-family: var(--body); font-size: 14px; font-weight: 600; padding: 14px 24px; border-radius: 4px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3); z-index: 999; transform: translateY(80px); opacity: 0;
  transition: transform 0.4s ease, opacity 0.4s ease; max-width: calc(100vw - 64px);
}
.toast.show { transform: none; opacity: 1; }