/* ==========================================================================
   Colony Solar — Design System v2 "Premium Dark"
   Deep navy-black, warm amber glow, glass surfaces, big confident type.
   No external fonts/libs by design (Core Web Vitals budget) — the premium
   feel comes from color, depth, spacing, and restraint.
   Same class names as v1: pages did not need re-marking.
   ========================================================================== */

:root {
  /* surfaces */
  --bg: #070f1c;
  --bg-2: #0a1626;
  --bg-3: #0e1e33;
  --glass: rgba(255, 255, 255, 0.045);
  --glass-2: rgba(255, 255, 255, 0.07);
  --line: rgba(255, 255, 255, 0.09);
  --line-2: rgba(255, 255, 255, 0.16);
  /* ink */
  --ink: #e9eff8;
  --ink-strong: #ffffff;
  --muted: #9db0c9;
  --faint: #7f92ab;
  /* brand */
  --amber: #f6a83c;
  --amber-2: #ffc873;
  --amber-deep: #d98a1f;
  --amber-ghost: rgba(246, 168, 60, 0.12);
  --success: #58c98b;
  /* geometry */
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  --glow: 0 0 60px rgba(246, 168, 60, 0.18);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --max: 1160px;
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--ink);
  background:
    radial-gradient(1200px 700px at 85% -200px, rgba(246, 168, 60, 0.07), transparent 60%),
    radial-gradient(900px 600px at -10% 30%, rgba(38, 92, 168, 0.10), transparent 55%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(246, 168, 60, 0.35); color: #fff; }

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

a { color: var(--amber-2); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--ink-strong); }

h1, h2, h3, h4 { line-height: 1.08; color: var(--ink-strong); margin: 0 0 0.55em; letter-spacing: -0.025em; text-wrap: balance; }
h1 { font-size: clamp(2.4rem, 5.2vw, 3.9rem); font-weight: 850; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); font-weight: 800; }
h3 { font-size: clamp(1.12rem, 2vw, 1.35rem); font-weight: 700; letter-spacing: -0.01em; }
p { margin: 0 0 1.15em; }
.lead { font-size: clamp(1.08rem, 1.8vw, 1.26rem); color: var(--muted); max-width: 44em; line-height: 1.75; }

/* Amber gradient treatment for <em> inside headlines */
h1 em, h2 em {
  font-style: normal;
  background: linear-gradient(100deg, var(--amber-2) 0%, var(--amber) 55%, var(--amber-deep) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.container { max-width: var(--max); margin: 0 auto; padding: 0 clamp(1.1rem, 4vw, 2rem); }
.section { padding: clamp(3.6rem, 8vw, 6.5rem) 0; position: relative; }

/* Alternating section treatments (markup unchanged from v1) */
.section--alt {
  background: linear-gradient(180deg, var(--bg-2) 0%, var(--bg) 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section--navy {
  background:
    radial-gradient(1000px 500px at 80% 0%, rgba(246, 168, 60, 0.10), transparent 55%),
    linear-gradient(180deg, var(--bg-3) 0%, var(--bg-2) 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section--navy h2, .section--navy h3 { color: var(--ink-strong); }
.section--navy p { color: var(--muted); }

.kicker {
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--amber); margin-bottom: 1.1rem;
}
.kicker::before {
  content: ""; width: 26px; height: 1.5px;
  background: linear-gradient(90deg, var(--amber), transparent);
}
.center .kicker::after {
  content: ""; width: 26px; height: 1.5px;
  background: linear-gradient(270deg, var(--amber), transparent);
}
.center { text-align: center; }
.center .kicker { justify-content: center; }
.center .lead { margin-inline: auto; }

/* Skip link */
.skip-link {
  position: absolute; left: -9999px; top: 0; background: var(--amber); color: #12100a;
  padding: 0.7rem 1.2rem; z-index: 100; border-radius: 0 0 var(--radius-sm) 0; font-weight: 700;
}
.skip-link:focus { left: 0; }

/* Header
   ========================================================================== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 15, 28, 0.72);
  backdrop-filter: blur(14px) saturate(1.4); -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, background 0.25s ease;
}
.site-header.is-scrolled { border-bottom-color: var(--line); background: rgba(7, 15, 28, 0.88); }
.header-inner { display: flex; align-items: center; gap: 1.5rem; min-height: 76px; }

.logo { display: flex; align-items: center; gap: 0.65rem; text-decoration: none; margin-right: auto; }
.logo-mark { flex: none; filter: drop-shadow(0 0 14px rgba(246, 168, 60, 0.35)); }
.logo-text { font-size: 1.3rem; font-weight: 800; color: var(--ink-strong); letter-spacing: -0.02em; }
.logo-text span { color: var(--amber); }

.site-nav ul { display: flex; gap: 1.7rem; list-style: none; margin: 0; padding: 0; align-items: center; }
.site-nav a { color: var(--muted); text-decoration: none; font-weight: 600; font-size: 0.96rem; transition: color 0.15s ease; }
.site-nav a:hover { color: var(--ink-strong); }

.nav-toggle { display: none; background: none; border: 0; padding: 0.5rem; cursor: pointer; color: var(--ink-strong); }

/* Buttons */
.btn {
  display: inline-block; font-weight: 750; text-decoration: none; text-align: center;
  border-radius: 999px; padding: 0.9rem 1.8rem; font-size: 1rem; border: 1.5px solid transparent;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease, border-color 0.16s ease;
  cursor: pointer; letter-spacing: -0.01em;
}
.btn:active { transform: translateY(1px); }
.btn--primary {
  background: linear-gradient(120deg, var(--amber-2) 0%, var(--amber) 55%, var(--amber-deep) 100%);
  color: #12100a;
  box-shadow: 0 8px 28px rgba(246, 168, 60, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.4);
}
.btn--primary:hover {
  box-shadow: 0 10px 36px rgba(246, 168, 60, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.4);
  transform: translateY(-1px); color: #12100a;
}
.btn--ghost { border-color: var(--line-2); color: var(--ink-strong); background: rgba(255, 255, 255, 0.03); }
.btn--ghost:hover { border-color: var(--amber); color: var(--amber-2); background: var(--amber-ghost); }
.btn--lg { padding: 1.05rem 2.2rem; font-size: 1.07rem; }

/* Hero
   ========================================================================== */
.hero {
  position: relative;
  background:
    radial-gradient(1100px 600px at 78% -15%, rgba(246, 168, 60, 0.16), transparent 58%),
    radial-gradient(700px 500px at 10% 110%, rgba(38, 92, 168, 0.14), transparent 60%),
    linear-gradient(180deg, #0b1a2e 0%, var(--bg) 100%);
  overflow: hidden;
}
.hero::after { /* faint grid texture */
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(900px 500px at 70% 20%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(900px 500px at 70% 20%, #000 0%, transparent 75%);
}
.hero > .container { position: relative; z-index: 1; }
.hero-inner {
  display: grid; grid-template-columns: 1.06fr 0.94fr; gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center; padding: clamp(3.6rem, 8vw, 7rem) 0;
}
.hero h1 { color: var(--ink-strong); }
.hero .lead { color: var(--muted); }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 1.8rem; }
.hero-note { margin-top: 1.2rem; font-size: 0.92rem; color: var(--faint); }
.hero-art { min-width: 0; filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.5)); }

/* Trust bar */
.trustbar { position: relative; z-index: 1; background: rgba(255, 255, 255, 0.03); border-top: 1px solid var(--line); backdrop-filter: blur(8px); }
.trustbar-inner {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem 2rem;
  padding: 1.2rem 0; color: var(--muted); font-size: 0.94rem; font-weight: 600;
}
.trustbar-inner span { display: flex; align-items: center; gap: 0.6rem; }
.trustbar-inner svg { flex: none; }

/* Cards
   ========================================================================== */
.grid { display: grid; gap: 1.4rem; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  position: relative;
  background: linear-gradient(160deg, var(--glass-2) 0%, var(--glass) 100%);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.9rem; overflow: hidden;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}
.card::before { /* top light edge */
  content: ""; position: absolute; top: 0; left: 12%; right: 12%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.28), transparent);
}
.card:hover { transform: translateY(-4px); border-color: rgba(246, 168, 60, 0.4); box-shadow: var(--shadow), var(--glow); }
.card h3 { margin-top: 1.05rem; }
.card p { color: var(--muted); margin-bottom: 0; }
.card .card-link { display: inline-block; margin-top: 1.1rem; font-weight: 700; text-decoration: none; }
.card .card-link:hover { text-decoration: underline; }
.card-icon {
  width: 54px; height: 54px; border-radius: 14px;
  background: var(--amber-ghost);
  border: 1px solid rgba(246, 168, 60, 0.35);
  display: flex; align-items: center; justify-content: center; color: var(--amber);
  box-shadow: inset 0 0 20px rgba(246, 168, 60, 0.12);
}

/* Steps */
.step { padding: 1.7rem; }
.step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; border-radius: 50%;
  background: linear-gradient(135deg, var(--amber-2), var(--amber-deep));
  color: #12100a; font-weight: 800; font-size: 1.15rem; margin-bottom: 1rem;
  box-shadow: 0 6px 20px rgba(246, 168, 60, 0.35);
}
.step h3 { margin: 0 0 0.4rem; }
.step p { color: var(--muted); margin: 0; }

/* Split feature */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2.2rem, 5vw, 4.5rem); align-items: center; }
.checklist { list-style: none; margin: 1.5rem 0 0; padding: 0; }
.checklist li { display: flex; gap: 0.8rem; align-items: flex-start; margin-bottom: 0.95rem; color: var(--muted); }
.checklist svg { flex: none; margin-top: 0.24em; color: var(--success); }
.section--navy .checklist svg, .hero .checklist svg { color: var(--amber); }
.checklist strong { color: var(--ink-strong); }

/* Stat strip */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; text-align: center; }
.stat {
  background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.6rem 1.2rem;
}
.stat b {
  display: block; font-size: clamp(1.9rem, 3.6vw, 2.7rem); font-weight: 850; letter-spacing: -0.03em;
  background: linear-gradient(100deg, var(--amber-2), var(--amber-deep));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat span { color: var(--muted); font-size: 0.95rem; }

/* Callout */
.callout {
  border: 1px solid rgba(246, 168, 60, 0.35); border-left: 4px solid var(--amber);
  background: var(--amber-ghost);
  border-radius: var(--radius-sm); padding: 1.4rem 1.6rem; margin: 1.9rem 0;
}
.callout p:last-child { margin-bottom: 0; }
.callout strong { color: var(--ink-strong); }
.callout--navy { background: var(--glass); border-color: var(--line-2); border-left-color: var(--amber); }

/* FAQ
   ========================================================================== */
.faq { max-width: 840px; margin: 0 auto; }
.faq details {
  background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius-sm);
  margin-bottom: 0.85rem; overflow: hidden; transition: border-color 0.2s ease;
}
.faq details[open] { border-color: rgba(246, 168, 60, 0.45); background: var(--glass-2); }
.faq summary {
  cursor: pointer; font-weight: 700; color: var(--ink-strong); padding: 1.15rem 3.2rem 1.15rem 1.4rem;
  list-style: none; position: relative; font-size: 1.05rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 1.3rem; top: 50%; transform: translateY(-50%);
  font-size: 1.6rem; font-weight: 300; color: var(--amber);
}
.faq details[open] summary::after { content: "–"; }
.faq .faq-a { padding: 0 1.4rem 1.3rem; color: var(--muted); }
.faq .faq-a p:last-child { margin-bottom: 0; }

/* CTA band
   ========================================================================== */
.cta-band {
  position: relative;
  background:
    radial-gradient(800px 320px at 20% 130%, rgba(246, 168, 60, 0.22), transparent 60%),
    radial-gradient(600px 300px at 85% -30%, rgba(246, 168, 60, 0.12), transparent 55%),
    linear-gradient(160deg, var(--bg-3) 0%, var(--bg-2) 100%);
  border: 1px solid var(--line-2);
  border-radius: calc(var(--radius) + 6px);
  padding: clamp(2.6rem, 5.5vw, 4.5rem);
  text-align: center; overflow: hidden;
  box-shadow: var(--shadow);
}
.cta-band::before {
  content: ""; position: absolute; top: 0; left: 18%; right: 18%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(246, 168, 60, 0.7), transparent);
}
.cta-band h2 { color: var(--ink-strong); }
.cta-band p { color: var(--muted); max-width: 42em; margin-inline: auto; }
.cta-band .btn { margin-top: 0.8rem; }

/* Article / prose
   ========================================================================== */
.article-header { max-width: 800px; margin: 0 auto; padding-top: clamp(2.6rem, 5vw, 4.2rem); }
.article-meta { color: var(--faint); font-size: 0.94rem; margin-bottom: 2.2rem; padding-bottom: 1.6rem; border-bottom: 1px solid var(--line); }
.prose { max-width: 800px; margin: 0 auto; }
.prose h2 { margin-top: 2.4em; font-size: clamp(1.5rem, 2.8vw, 2rem); }
.prose h3 { margin-top: 1.9em; }
.prose ul, .prose ol { padding-left: 1.3rem; margin: 0 0 1.25em; color: var(--ink); }
.prose li { margin-bottom: 0.5em; }
.prose li::marker { color: var(--amber); }
.prose table {
  width: 100%; border-collapse: collapse; margin: 1.8rem 0; font-size: 0.97rem;
  background: var(--glass); border-radius: var(--radius-sm); overflow: hidden;
  border: 1px solid var(--line);
}
.prose th { background: rgba(246, 168, 60, 0.14); color: var(--ink-strong); text-align: left; padding: 0.85rem 1rem; font-size: 0.9rem; letter-spacing: 0.02em; }
.prose td { padding: 0.85rem 1rem; border-bottom: 1px solid var(--line); vertical-align: top; color: var(--muted); }
.prose td strong { color: var(--ink-strong); }
.prose tr:last-child td { border-bottom: 0; }
.prose blockquote { border-left: 3px solid var(--amber); margin: 1.7rem 0; padding: 0.4rem 0 0.4rem 1.4rem; color: var(--muted); font-style: italic; }
.sources { font-size: 0.92rem; color: var(--faint); border-top: 1px solid var(--line); margin-top: 3.2rem; padding-top: 1.5rem; }
.breadcrumbs { font-size: 0.9rem; color: var(--faint); padding-top: 1.5rem; }
.breadcrumbs a { color: var(--faint); }
.breadcrumbs a:hover { color: var(--amber-2); }

/* Forms
   ========================================================================== */
.form-card {
  background: linear-gradient(160deg, var(--glass-2) 0%, var(--glass) 100%);
  border: 1px solid var(--line-2); border-radius: var(--radius);
  padding: clamp(1.7rem, 3vw, 2.5rem); box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}
.form-card h2 { letter-spacing: -0.02em; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.05rem 1.2rem; }
.form-field { display: flex; flex-direction: column; gap: 0.4rem; }
.form-field--full { grid-column: 1 / -1; }
.form-field label { font-weight: 650; font-size: 0.9rem; color: var(--ink); }
.form-field input, .form-field select, .form-field textarea {
  font: inherit; padding: 0.8rem 0.95rem; border: 1.5px solid var(--line-2); border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.25); color: var(--ink-strong); width: 100%;
}
.form-field input::placeholder, .form-field textarea::placeholder { color: var(--faint); }
.form-field select { color: var(--ink); }
.form-field select option { background: var(--bg-2); color: var(--ink); }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  outline: 2px solid var(--amber); outline-offset: 1px; border-color: var(--amber);
}
.form-note { font-size: 0.87rem; color: var(--faint); margin-top: 1rem; }

/* Learn cards */
.post-card { display: flex; flex-direction: column; }
.post-card time { color: var(--amber); font-size: 0.85rem; font-weight: 650; letter-spacing: 0.04em; }
.post-card h3 a { color: var(--ink-strong); text-decoration: none; }
.post-card h3 a:hover { color: var(--amber-2); }

/* Footer
   ========================================================================== */
.site-footer {
  background: linear-gradient(180deg, var(--bg) 0%, #050b14 100%);
  border-top: 1px solid var(--line);
  color: var(--muted); padding: clamp(3.2rem, 6vw, 5rem) 0 2rem;
}
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2.5rem; margin-bottom: 2.6rem; }
.site-footer h4 { color: var(--ink-strong); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.18em; margin-bottom: 1.1rem; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 0.6rem; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--amber-2); }
.footer-brand p { font-size: 0.95rem; }
.footer-bottom {
  border-top: 1px solid var(--line); padding-top: 1.5rem;
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.8rem;
  font-size: 0.87rem; color: var(--faint);
}

/* Focus visibility */
:focus-visible { outline: 2.5px solid var(--amber); outline-offset: 3px; border-radius: 3px; }

/* Responsive
   ========================================================================== */
@media (max-width: 920px) {
  .hero-inner, .split { grid-template-columns: 1fr; }
  .hero-art { max-width: 480px; margin: 0 auto; }
  .grid--3, .grid--4 { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr; gap: 1.2rem; }

  .nav-toggle { display: block; }
  .site-nav {
    position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(9, 18, 32, 0.98); backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line); box-shadow: var(--shadow); display: none;
  }
  .site-nav.is-open { display: block; }
  .site-nav ul { flex-direction: column; align-items: stretch; gap: 0; padding: 0.6rem 0; }
  .site-nav li { border-bottom: 1px solid var(--line); }
  .site-nav li:last-child { border-bottom: 0; }
  .site-nav a { display: block; padding: 1rem 1.6rem; color: var(--ink); }
  .header-cta { display: none; }
}
@media (max-width: 560px) {
  .grid--3, .grid--4, .grid--2, .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.9rem; }
  .form-field--full { grid-column: auto; }
  .hero-ctas .btn { width: 100%; }
}

/* Photos (v3 photo-forward direction)
   ========================================================================== */
.photo {
  display: block; width: 100%; height: auto;
  border-radius: var(--radius); border: 1px solid var(--line-2);
  box-shadow: var(--shadow); object-fit: cover; background: var(--bg-3);
}
.hero-art .photo { aspect-ratio: 4 / 3; }
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.gallery .photo { aspect-ratio: 4 / 3; transition: transform 0.22s ease, border-color 0.22s ease; }
.gallery .photo:hover { transform: translateY(-4px); border-color: rgba(246, 168, 60, 0.45); }
.gallery-caption { text-align: center; color: var(--faint); font-size: 0.93rem; margin-top: 1.2rem; }
@media (max-width: 700px) { .gallery { grid-template-columns: 1fr; } }

/* Calculator (v4)
   ========================================================================== */
.calc-shell {
  background: linear-gradient(160deg, var(--glass-2) 0%, var(--glass) 100%);
  border: 1px solid var(--line-2); border-radius: calc(var(--radius) + 4px);
  padding: clamp(1.6rem, 3.5vw, 2.8rem); box-shadow: var(--shadow);
}
.calc-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: clamp(1.8rem, 4vw, 3rem); align-items: start; }
.calc-field { margin-bottom: 1.7rem; }
.calc-field label { display: flex; justify-content: space-between; align-items: baseline; font-weight: 650; font-size: 0.95rem; color: var(--ink); margin-bottom: 0.6rem; }
.calc-field label output { color: var(--amber-2); font-weight: 800; font-size: 1.05rem; font-variant-numeric: tabular-nums; }
input[type="range"].calc-range {
  -webkit-appearance: none; appearance: none; width: 100%; height: 6px; border-radius: 999px;
  background: linear-gradient(90deg, var(--amber) 0%, var(--amber) var(--fill, 50%), rgba(255,255,255,0.14) var(--fill, 50%));
  outline-offset: 6px; cursor: pointer;
}
input[type="range"].calc-range::-webkit-slider-thumb {
  -webkit-appearance: none; width: 26px; height: 26px; border-radius: 50%;
  background: linear-gradient(135deg, var(--amber-2), var(--amber-deep));
  border: 2.5px solid #12100a; box-shadow: 0 4px 14px rgba(246,168,60,0.5); cursor: grab;
}
input[type="range"].calc-range::-moz-range-thumb {
  width: 26px; height: 26px; border-radius: 50%;
  background: linear-gradient(135deg, var(--amber-2), var(--amber-deep));
  border: 2.5px solid #12100a; box-shadow: 0 4px 14px rgba(246,168,60,0.5); cursor: grab;
}
.calc-hint { font-size: 0.84rem; color: var(--faint); margin-top: 0.45rem; }
.calc-results { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.calc-card {
  background: rgba(0,0,0,0.25); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 1.1rem 1.2rem;
}
.calc-card.calc-card--hero { grid-column: 1 / -1; border-color: rgba(246,168,60,0.4); background: var(--amber-ghost); }
.calc-card h4 { margin: 0 0 0.3rem; font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--faint); font-weight: 700; }
.calc-card b { display: block; font-size: clamp(1.3rem, 2.6vw, 1.8rem); font-weight: 850; color: var(--ink-strong); letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.calc-card.calc-card--hero b { font-size: clamp(1.6rem, 3.2vw, 2.3rem);
  background: linear-gradient(100deg, var(--amber-2), var(--amber-deep));
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.calc-card span { font-size: 0.86rem; color: var(--muted); }
.calc-note { font-size: 0.88rem; color: var(--faint); margin-top: 1.3rem; line-height: 1.6; }
.calc-assumptions { margin-top: 2rem; }
.calc-assumptions summary { cursor: pointer; font-weight: 700; color: var(--muted); font-size: 0.94rem; }
.calc-assumptions ul { margin: 0.8rem 0 0; padding-left: 1.2rem; color: var(--faint); font-size: 0.92rem; }
.calc-ctas { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 1.6rem; }

/* Homepage mini calculator */
.calc-mini {
  display: flex; flex-wrap: wrap; align-items: center; gap: 1.4rem 2.2rem;
  background: linear-gradient(160deg, var(--glass-2) 0%, var(--glass) 100%);
  border: 1px solid var(--line-2); border-radius: var(--radius); padding: 1.6rem 1.9rem;
  box-shadow: var(--shadow);
}
.calc-mini-input { flex: 1 1 260px; }
.calc-mini-out { text-align: center; }
.calc-mini-out b { display: block; font-size: 1.9rem; font-weight: 850;
  background: linear-gradient(100deg, var(--amber-2), var(--amber-deep));
  -webkit-background-clip: text; background-clip: text; color: transparent; font-variant-numeric: tabular-nums; }
.calc-mini-out span { font-size: 0.85rem; color: var(--faint); }

/* Header phone + sticky mobile call bar
   ========================================================================== */
.header-phone { color: var(--ink-strong); text-decoration: none; font-weight: 750; font-size: 0.98rem; white-space: nowrap; }
.header-phone:hover { color: var(--amber-2); }
.callbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 60; display: none;
  gap: 0.7rem; padding: 0.7rem calc(0.9rem + env(safe-area-inset-left)) calc(0.7rem + env(safe-area-inset-bottom));
  background: rgba(7, 15, 28, 0.92); backdrop-filter: blur(14px); border-top: 1px solid var(--line-2);
}
.callbar .btn { flex: 1; padding: 0.85rem 0.6rem; font-size: 0.98rem; }
@media (max-width: 920px) {
  .callbar { display: flex; }
  body { padding-bottom: 76px; }
  .header-phone { display: none; }
  .calc-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .calc-results { grid-template-columns: 1fr; }
}

.footer-serving { font-size: 0.88rem; color: var(--faint); margin-top: 0.9rem; }

/* Render-performance: below-fold sections skip initial layout */
.section--alt, .section--navy, .site-footer { content-visibility: auto; contain-intrinsic-size: auto 600px; }