/* ============================================================
   Coatings Pricing Pro · shared site stylesheet · v2 polished
   2026 edition · brand v1 palette + 8px baseline grid
   Used by: /how-it-works · /system · /pro-operator-pack · /about
            · /faq · /sample · plus future internal pages
   ============================================================ */

:root {
  /* Brand palette */
  --navy: #0F172A;
  --teal: #0F766E;
  --teal-dark: #064E46;
  --green: #047857;
  --green-bg: #ECFDF5;
  --slate: #475569;
  --mist: #94A3B8;
  --cloud: #F1F5F9;
  --pearl: #FAFAFA;
  --caution: #FEF3C7;
  --caution-text: #78350F;
  --white: #FFFFFF;

  /* Spacing scale · 8px baseline */
  --s-0: 0;
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;
  --s-7: 48px;
  --s-8: 64px;
  --s-9: 96px;
  --s-10: 128px;

  /* Type scale */
  --t-display-xl: 64px;
  --t-display-lg: 48px;
  --t-display-md: 36px;
  --t-display-sm: 28px;
  --t-body-lg: 19px;
  --t-body: 16px;
  --t-body-sm: 14.5px;
  --t-eyebrow: 12px;

  /* Animation */
  --t-fast: 0.18s;
  --t-medium: 0.32s;
  --t-slow: 0.6s;
  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

  /* Elevation (shadow) */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 14px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 36px rgba(15, 23, 42, 0.12);
  --shadow-xl: 0 24px 60px rgba(15, 23, 42, 0.18);

  /* Border radius */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 24px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: 80px; }
body {
  font-family: Arial, "Liberation Sans", Helvetica, sans-serif;
  background: var(--pearl);
  color: var(--slate);
  line-height: 1.6;
  font-size: var(--t-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--teal); text-decoration: none; transition: color var(--t-fast) var(--ease-out); }
a:hover { color: var(--green); }

.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 820px; margin: 0 auto; padding: 0 24px; }

/* ============================================================
   Top nav
   ============================================================ */
#nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: rgba(250, 250, 250, 0.92);
  backdrop-filter: saturate(150%) blur(8px);
  -webkit-backdrop-filter: saturate(150%) blur(8px);
  border-bottom: 1px solid #E2E8F0;
  z-index: 100;
  height: 64px;
  transition: box-shadow var(--t-medium) var(--ease-out);
}
#nav.scrolled { box-shadow: var(--shadow-sm); }
#nav .container {
  display: flex; align-items: center; justify-content: space-between; height: 100%;
}
#nav .logo {
  display: flex; align-items: center; gap: 10px;
  font-family: "Arial Black", Arial, sans-serif;
  font-weight: 900; font-size: 17px; letter-spacing: -0.02em; color: var(--navy);
}
#nav .logo:hover { color: var(--navy); }
#nav .logo img { width: 28px; height: 28px; }
#nav .nav-links { display: flex; gap: 28px; align-items: center; }
#nav .nav-links a {
  color: var(--slate); font-size: 14.5px; font-weight: 600;
  position: relative;
}
#nav .nav-links a::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -8px;
  height: 2px; background: var(--teal); transform: scaleX(0); transform-origin: center;
  transition: transform var(--t-medium) var(--ease-out);
}
#nav .nav-links a:not(.nav-cta):hover { color: var(--navy); }
#nav .nav-links a:not(.nav-cta):hover::after { transform: scaleX(1); }
#nav .nav-cta {
  background: var(--teal); color: var(--white) !important; padding: 9px 18px;
  border-radius: var(--r-sm); font-size: 14px; font-weight: 700;
  transition: background var(--t-fast) var(--ease-out), transform var(--t-fast) var(--ease-out);
}
#nav .nav-cta::after { display: none; }
#nav .nav-cta:hover { background: var(--green); color: var(--white) !important; transform: translateY(-1px); }
@media (max-width: 760px) {
  #nav .nav-links a:not(.nav-cta) { display: none; }
}

/* ============================================================
   Page hero (now with photo capability)
   ============================================================ */
.page-hero {
  position: relative;
  padding: 144px 0 72px;
  background: linear-gradient(180deg, var(--cloud) 0%, var(--pearl) 100%);
  border-bottom: 1px solid #E2E8F0;
  overflow: hidden;
}
.page-hero.with-photo {
  padding: 168px 0 96px;
  color: var(--white);
  border-bottom: none;
}
.page-hero.with-photo::before {
  content: ''; position: absolute; inset: 0;
  background-size: cover; background-position: center;
  z-index: 0;
}
.page-hero.with-photo::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.85) 0%, rgba(15, 118, 110, 0.78) 100%);
  z-index: 1;
}
.page-hero.with-photo .container,
.page-hero.with-photo .container-narrow { position: relative; z-index: 2; }
.page-hero.with-photo h1 { color: var(--white); }
.page-hero.with-photo p.lead { color: rgba(255, 255, 255, 0.92); }
.page-hero.with-photo .eyebrow { color: #5EEAD4; }

.page-hero .eyebrow {
  display: inline-block; font-size: var(--t-eyebrow); font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--teal); margin-bottom: 18px;
}
.page-hero h1 {
  font-family: "Arial Black", Arial, sans-serif;
  font-size: var(--t-display-lg); line-height: 1.05; letter-spacing: -0.025em;
  color: var(--navy); margin-bottom: 24px;
  max-width: 22ch;
}
.page-hero p.lead {
  font-size: var(--t-body-lg); line-height: 1.5; color: var(--slate);
  max-width: 60ch;
}
@media (max-width: 720px) {
  .page-hero h1 { font-size: var(--t-display-md); }
  .page-hero p.lead { font-size: 17px; }
  .page-hero { padding: 112px 0 56px; }
  .page-hero.with-photo { padding: 128px 0 72px; }
}

/* ============================================================
   Sections
   ============================================================ */
.section { padding: 80px 0; }
.section.alt { background: var(--cloud); border-top: 1px solid #E2E8F0; border-bottom: 1px solid #E2E8F0; }
.section.dark { background: var(--navy); color: rgba(255, 255, 255, 0.86); }
.section.dark h2, .section.dark h3 { color: var(--white); }
.section.dark .eyebrow { color: #5EEAD4; }

.section h2 {
  font-family: "Arial Black", Arial, sans-serif;
  font-size: var(--t-display-md); line-height: 1.15; letter-spacing: -0.02em;
  color: var(--navy); margin-bottom: 18px;
}
.section h3 {
  font-family: "Arial Black", Arial, sans-serif;
  font-size: 22px; color: var(--navy); margin: 28px 0 12px; letter-spacing: -0.01em;
}
.section p { font-size: var(--t-body); margin-bottom: 14px; }
.section ul, .section ol { padding-left: 24px; margin-bottom: 14px; }
.section li { margin-bottom: 8px; }
.section .eyebrow {
  display: inline-block; font-size: var(--t-eyebrow); font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--teal); margin-bottom: 12px;
}
.section .section-head {
  text-align: center; margin-bottom: 56px;
}
.section .section-head h2 { max-width: 24ch; margin-left: auto; margin-right: auto; }
.section .section-head p { max-width: 56ch; margin: 0 auto; color: var(--slate); font-size: var(--t-body-lg); }
strong { color: var(--navy); font-weight: 700; }

@media (max-width: 720px) {
  .section h2 { font-size: 26px; }
  .section { padding: 56px 0; }
  .section .section-head { margin-bottom: 36px; }
}

/* ============================================================
   Cards
   ============================================================ */
.card {
  background: var(--white); border: 1px solid #E2E8F0; border-radius: var(--r-md);
  padding: 28px; margin-bottom: 18px;
  transition: transform var(--t-medium) var(--ease-out), box-shadow var(--t-medium) var(--ease-out), border-color var(--t-medium) var(--ease-out);
}
.card.lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: #CBD5E1;
}
.card h3 { margin-top: 0; }
.card-grid { display: grid; gap: 18px; }
.card-grid.cols-2 { grid-template-columns: 1fr 1fr; }
.card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.card-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 760px) {
  .card-grid.cols-2, .card-grid.cols-3, .card-grid.cols-4 { grid-template-columns: 1fr; }
}

.card .card-icon {
  width: 44px; height: 44px; border-radius: var(--r-sm);
  background: var(--green-bg); color: var(--green);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.card .card-icon svg { width: 22px; height: 22px; }

/* ============================================================
   Icons
   ============================================================ */
.icon { width: 24px; height: 24px; display: inline-block; vertical-align: middle; color: currentColor; }
.icon-lg { width: 32px; height: 32px; }
.icon-xl { width: 48px; height: 48px; }
.icon-inline { width: 18px; height: 18px; vertical-align: -3px; }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 700; padding: 13px 26px; border-radius: var(--r-sm);
  font-size: 15px; text-align: center;
  border: 2px solid transparent; cursor: pointer;
  transition: all var(--t-fast) var(--ease-out);
}
.btn:focus-visible { outline: 2px solid #5EEAD4; outline-offset: 2px; }
.btn-primary { background: var(--teal); color: var(--white) !important; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--green); color: var(--white) !important; transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-primary:active { transform: translateY(0); box-shadow: var(--shadow-sm); }
.btn-secondary { background: transparent; color: var(--teal) !important; border-color: var(--teal); }
.btn-secondary:hover { background: var(--teal); color: var(--white) !important; }
.btn-ghost { background: transparent; color: var(--slate) !important; }
.btn-ghost:hover { background: var(--cloud); color: var(--navy) !important; }
.btn-large { padding: 17px 34px; font-size: 17px; }
.btn-small { padding: 8px 16px; font-size: 13px; }
.btn-on-dark { background: var(--white); color: var(--navy) !important; }
.btn-on-dark:hover { background: var(--cloud); color: var(--navy) !important; }

/* ============================================================
   Callout boxes
   ============================================================ */
.callout {
  background: var(--green-bg); border-left: 4px solid var(--green); padding: 20px 24px;
  border-radius: 0 var(--r-md) var(--r-md) 0; margin: 24px 0;
}
.callout.warn { background: var(--caution); border-left-color: #B45309; }
.callout.warn p, .callout.warn strong { color: var(--caution-text); }
.callout p { margin: 0; color: #064E3B; }
.callout p + p { margin-top: 10px; }
.callout strong { color: #064E3B; }

.pullquote {
  font-family: "Arial Black", Arial, sans-serif;
  font-size: 22px; line-height: 1.35; color: var(--navy);
  border-left: 4px solid var(--teal);
  padding: 8px 0 8px 24px; margin: 32px 0;
  letter-spacing: -0.01em;
}

/* ============================================================
   Final CTA band
   ============================================================ */
.band-navy {
  background: var(--navy); color: var(--cloud); padding: 80px 0; text-align: center;
  position: relative; overflow: hidden;
}
.band-navy::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 50%, rgba(15, 118, 110, 0.25), transparent 50%),
              radial-gradient(circle at 70% 30%, rgba(4, 120, 87, 0.18), transparent 45%);
  pointer-events: none;
}
.band-navy .container, .band-navy .container-narrow { position: relative; z-index: 1; }
.band-navy h2 { color: var(--white); margin-bottom: 16px; }
.band-navy p { color: rgba(255, 255, 255, 0.75); max-width: 640px; margin: 0 auto 28px; font-size: var(--t-body-lg); }
.band-navy .smalltrust { color: var(--mist); font-size: 13px; margin-top: 14px; }

/* ============================================================
   Footer
   ============================================================ */
#footer {
  background: var(--navy); color: var(--mist); padding: 64px 0 32px;
  font-size: 14.5px; line-height: 1.7;
}
#footer .container { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr; gap: 32px; }
#footer .footer-brand .brand-mark {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 12px;
}
#footer .footer-brand .brand-mark img { width: 28px; height: 28px; }
#footer .footer-brand .brand-mark .brand-name {
  font-family: "Arial Black", Arial, sans-serif;
  color: var(--white); font-size: 16px; letter-spacing: -0.02em;
}
#footer .footer-brand p { color: var(--mist); font-size: 13.5px; max-width: 32ch; }
#footer .footer-col h4 {
  color: var(--white); font-family: "Arial Black", Arial, sans-serif;
  font-size: 12.5px; letter-spacing: 0.14em; text-transform: uppercase;
  margin-bottom: 16px;
}
#footer a { color: var(--mist); display: block; padding: 5px 0; transition: color var(--t-fast) var(--ease-out); }
#footer a:hover { color: var(--white); }
#footer .legal {
  grid-column: 1 / -1;
  margin-top: 36px; padding-top: 28px;
  border-top: 1px solid #1E293B; font-size: 12.5px; color: #64748B;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px;
}
@media (max-width: 880px) {
  #footer .container { grid-template-columns: 1fr 1fr; }
  #footer .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 520px) {
  #footer .container { grid-template-columns: 1fr; }
}

/* ============================================================
   Sticky CTA bar (appears after hero scroll)
   ============================================================ */
.sticky-cta {
  position: fixed; left: 0; right: 0; bottom: -100px;
  background: var(--navy); color: var(--white);
  padding: 14px 24px;
  z-index: 90; box-shadow: 0 -8px 30px rgba(15, 23, 42, 0.2);
  display: flex; align-items: center; justify-content: center; gap: 16px;
  font-size: 14.5px;
  transition: bottom var(--t-medium) var(--ease-out);
  flex-wrap: wrap;
}
.sticky-cta.visible { bottom: 0; }
.sticky-cta .sticky-msg { color: rgba(255,255,255,0.9); }
.sticky-cta .btn { padding: 8px 18px; font-size: 13.5px; }
.sticky-cta .sticky-dismiss {
  background: transparent; border: 0; color: var(--mist); cursor: pointer;
  padding: 4px 8px; font-size: 18px; line-height: 1;
}
.sticky-cta .sticky-dismiss:hover { color: var(--white); }
@media (max-width: 600px) {
  .sticky-cta { padding: 10px 16px; font-size: 13px; gap: 10px; }
  .sticky-cta .sticky-msg { display: none; }
}

/* ============================================================
   Scroll reveal · used with data-reveal attribute
   ============================================================ */
[data-reveal] {
  opacity: 0; transform: translateY(20px);
  transition: opacity var(--t-slow) var(--ease-out), transform var(--t-slow) var(--ease-out);
}
[data-reveal].revealed { opacity: 1; transform: translateY(0); }

/* ============================================================
   Mock components (used on /how-it-works)
   ============================================================ */
.spreadsheet {
  background: var(--white); border: 1px solid #E2E8F0; border-radius: var(--r-md);
  overflow: hidden; box-shadow: var(--shadow-md); margin: 24px 0;
  font-family: "Menlo", "Consolas", monospace;
  font-size: 13px;
}
.spreadsheet-bar {
  background: #F8FAFC; padding: 8px 14px; border-bottom: 1px solid #E2E8F0;
  font-family: Arial, sans-serif; font-size: 12.5px; color: var(--slate);
  display: flex; align-items: center; gap: 8px;
}
.spreadsheet-bar .dot { width: 11px; height: 11px; border-radius: 50%; background: #CBD5E1; }
.spreadsheet-bar .name { color: var(--mist); margin-left: 8px; font-weight: 600; }
.spreadsheet-formula {
  background: var(--white); padding: 8px 14px; border-bottom: 1px solid #F1F5F9;
  display: flex; align-items: center; gap: 12px;
  font-family: Arial, sans-serif; font-size: 13px;
}
.spreadsheet-formula .cell-ref {
  display: inline-block; padding: 4px 10px; border: 1px solid #E2E8F0; border-radius: 4px;
  color: var(--slate); background: #F8FAFC; font-family: "Menlo", monospace; font-weight: 600;
}
.spreadsheet-formula .fx { color: var(--mist); font-style: italic; }
.spreadsheet-formula .formula-body { font-family: "Menlo", monospace; color: var(--navy); }
.spreadsheet table { width: 100%; border-collapse: collapse; font-size: 13px; }
.spreadsheet table th, .spreadsheet table td {
  padding: 8px 12px; border-bottom: 1px solid #F1F5F9; border-right: 1px solid #F1F5F9;
  text-align: left;
}
.spreadsheet table th {
  background: #F8FAFC; color: var(--slate); font-weight: 700; font-size: 11.5px;
  text-transform: uppercase; letter-spacing: 0.08em;
}
.spreadsheet table .num { text-align: right; font-family: "Menlo", monospace; color: var(--navy); font-weight: 600; }
.spreadsheet table tr:hover td { background: #F8FAFC; }
.spreadsheet table .focused td { background: var(--green-bg); border-color: var(--green); }

.chat-mock { padding: 8px; }
.chat-mock .chat-header {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; background: var(--navy); color: var(--white);
  border-radius: var(--r-md) var(--r-md) 0 0;
  font-size: 13px; font-weight: 600;
}
.chat-mock .chat-header .live-dot { width: 8px; height: 8px; background: #5EEAD4; border-radius: 50%; box-shadow: 0 0 0 3px rgba(94, 234, 212, 0.3); }
.chat-mock .chat-body {
  background: var(--white); border: 1px solid #E2E8F0; border-top: 0;
  border-radius: 0 0 var(--r-md) var(--r-md);
  padding: 16px; box-shadow: var(--shadow-md);
}
.chat-mock .bubble {
  padding: 12px 16px; margin: 8px 0; border-radius: 12px; max-width: 86%;
  font-family: Arial, sans-serif; font-size: 14.5px; line-height: 1.55;
}
.chat-mock .bubble.user { background: var(--cloud); margin-left: auto; color: var(--navy); border-radius: 12px 12px 4px 12px; }
.chat-mock .bubble.gpt { background: var(--green-bg); color: #064E3B; border-radius: 12px 12px 12px 4px; }
.chat-mock .label {
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--mist); margin: 14px 0 4px;
}
.chat-mock .typing-indicator {
  display: inline-flex; gap: 4px; padding: 12px 16px; background: var(--green-bg); border-radius: 12px;
}
.chat-mock .typing-indicator span {
  width: 6px; height: 6px; background: var(--green); border-radius: 50%; opacity: 0.4;
  animation: typing 1.2s var(--ease-in-out) infinite;
}
.chat-mock .typing-indicator span:nth-child(2) { animation-delay: 0.15s; }
.chat-mock .typing-indicator span:nth-child(3) { animation-delay: 0.3s; }
@keyframes typing {
  0%, 60%, 100% { opacity: 0.4; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-3px); }
}

/* ============================================================
   FAQ accordion (details/summary)
   ============================================================ */
.faq-accordion details {
  border-bottom: 1px solid #E2E8F0;
  padding: 0;
}
.faq-accordion details[open] { background: var(--pearl); }
.faq-accordion summary {
  list-style: none;
  padding: 22px 16px 22px 0;
  cursor: pointer;
  display: flex; align-items: center; justify-content: space-between;
  font-weight: 700; color: var(--navy); font-size: 16.5px;
  transition: color var(--t-fast) var(--ease-out);
}
.faq-accordion summary::-webkit-details-marker { display: none; }
.faq-accordion summary:hover { color: var(--teal); }
.faq-accordion summary::after {
  content: ''; width: 20px; height: 20px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor;
  transform: rotate(45deg); transition: transform var(--t-medium) var(--ease-out);
  margin-left: 24px; flex-shrink: 0; opacity: 0.6;
}
.faq-accordion details[open] summary::after { transform: rotate(-135deg); opacity: 1; }
.faq-accordion .faq-body { padding: 0 0 22px; color: var(--slate); font-size: 15.5px; line-height: 1.65; }
.faq-accordion .faq-body p { margin-bottom: 10px; }
.faq-accordion .faq-body p:last-child { margin-bottom: 0; }

/* ============================================================
   Pricing comparison table
   ============================================================ */
.compare-table {
  background: var(--white); border-radius: var(--r-md); overflow: hidden;
  box-shadow: var(--shadow-md); margin: 32px 0;
}
.compare-table table { width: 100%; border-collapse: collapse; }
.compare-table th, .compare-table td {
  padding: 16px 18px; text-align: left; border-bottom: 1px solid #F1F5F9;
  font-size: 14.5px;
}
.compare-table thead th {
  background: var(--navy); color: var(--white);
  font-family: "Arial Black", Arial, sans-serif; font-size: 14px;
  position: sticky; top: 64px; z-index: 10;
}
.compare-table thead th.featured {
  background: var(--teal); position: relative;
}
.compare-table thead th.featured::after {
  content: 'Most popular'; position: absolute; top: -10px; left: 50%; transform: translateX(-50%);
  background: #5EEAD4; color: var(--navy); font-size: 10px; font-weight: 700;
  padding: 3px 10px; border-radius: 99px; letter-spacing: 0.08em; text-transform: uppercase;
  white-space: nowrap;
}
.compare-table th:not(:first-child), .compare-table td:not(:first-child) {
  text-align: center; vertical-align: middle;
}
.compare-table .row-feature { font-weight: 600; color: var(--navy); }
.compare-table .yes { color: var(--green); text-align: center; vertical-align: middle; }
.compare-table .yes svg {
  width: 22px; height: 22px;
  display: inline-block; vertical-align: middle;
}
.compare-table .no { color: #CBD5E1; text-align: center; vertical-align: middle; font-size: 18px; }
.compare-table tr:hover td { background: var(--pearl); }
.compare-table .tier-price {
  font-family: "Arial Black", Arial, sans-serif; font-size: 20px;
  display: block; margin-top: 6px; color: var(--white);
}
.compare-table tfoot td {
  background: var(--cloud); padding: 24px; text-align: center;
}
.compare-table tfoot .btn { margin: 4px; }
@media (max-width: 720px) {
  .compare-table th, .compare-table td { padding: 12px 8px; font-size: 12.5px; }
  .compare-table thead th { font-size: 12px; }
  .compare-table thead th.featured::after { display: none; }
}

/* ============================================================
   Photo + image utilities
   ============================================================ */
.photo {
  display: block; width: 100%; height: auto; border-radius: var(--r-md);
  background: var(--cloud);
}
.photo-frame {
  border-radius: var(--r-md); overflow: hidden; box-shadow: var(--shadow-md);
}
.photo-tinted {
  position: relative; isolation: isolate;
}
.photo-tinted::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(15, 118, 110, 0.25), rgba(4, 120, 87, 0.1));
  z-index: 1; pointer-events: none;
}

/* ============================================================
   Hero with mock calculator (landing page hero)
   ============================================================ */
.hero-split {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center;
}
@media (max-width: 920px) {
  .hero-split { grid-template-columns: 1fr; gap: 40px; }
}

/* ============================================================
   Timeline (used on /about)
   ============================================================ */
.timeline { position: relative; padding-left: 32px; }
.timeline::before {
  content: ''; position: absolute; left: 8px; top: 8px; bottom: 8px;
  width: 2px; background: var(--cloud);
}
.timeline-item { position: relative; padding-bottom: 32px; }
.timeline-item::before {
  content: ''; position: absolute; left: -28px; top: 4px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--white); border: 3px solid var(--teal); box-shadow: 0 0 0 4px var(--pearl);
}
.timeline-item h3 { margin-top: 0; }


/* ============================================================
   Mobile responsiveness hardening (run 6 polish)
   ============================================================ */
@media (max-width: 480px) {
  .container, .container-narrow { padding: 0 16px; }
  .page-hero h1 { font-size: 28px; }
  .page-hero p.lead { font-size: 16px; }
  .section h2 { font-size: 24px; }
  .section h3 { font-size: 18px; }
  .btn-large { padding: 14px 22px; font-size: 15.5px; }
  .card { padding: 20px; }
  .pullquote { font-size: 18px; padding-left: 18px; }
  /* Ensure tables don't overflow viewport */
  .spreadsheet { font-size: 11.5px; }
  .spreadsheet table th, .spreadsheet table td { padding: 6px 8px; }
  .compare-table th, .compare-table td { padding: 10px 6px; font-size: 11.5px; }
  /* Stack chat mock bubbles full-width */
  .chat-mock .bubble { max-width: 100%; }
}

/* Tap target sizing */
@media (max-width: 760px) {
  a, button, .btn, summary { min-height: 4