/* ==========================================================================
   Sourabh Thakur — SEO Portfolio
   Design system: "Editorial Precision"
   Fonts: Fraunces (display serif) + Inter (grotesk sans) — 2 families max
   Motion: transform/opacity only. See /assets/js/main.js for reveal logic.
   ========================================================================== */

:root{
  /* Palette */
  --bg:            #f7f3ec;
  --bg-alt:        #efe7d8;
  --surface:       #fffdfa;
  --ink:           #19140f;
  --ink-soft:      #4a4038;
  --ink-faint:     #6c5f52;
  --wine:          #6e1e2b;
  --wine-dark:     #4e141e;
  --wine-tint:     #f3e3e2;
  --brass:         #a8763a;
  --brass-dark:    #8a5f2c;
  --brass-tint:    #efe0c3;
  --border:        rgba(25, 20, 16, 0.12);
  --border-strong: rgba(25, 20, 16, 0.24);
  --focus-ring:    #1c6b5e;

  /* Type */
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  /* Scale */
  --step-sm: clamp(0.83rem, 0.8rem + 0.15vw, 0.9rem);
  --step-base: clamp(1rem, 0.96rem + 0.2vw, 1.08rem);
  --step-md: clamp(1.2rem, 1.1rem + 0.5vw, 1.45rem);
  --step-lg: clamp(1.6rem, 1.4rem + 1vw, 2.1rem);
  --step-xl: clamp(2.3rem, 1.9rem + 2vw, 3.4rem);
  --step-2xl: clamp(2.8rem, 2.1rem + 3.5vw, 4.6rem);

  /* Layout */
  --container: 1180px;
  --container-narrow: 760px;
  --radius: 4px;
  --radius-lg: 10px;
  --shadow-sm: 0 1px 2px rgba(25,20,16,0.06), 0 1px 1px rgba(25,20,16,0.04);
  --shadow-md: 0 8px 24px -8px rgba(25,20,16,0.18);
  --shadow-lg: 0 24px 48px -16px rgba(25,20,16,0.22);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 160ms;
  --dur-med: 420ms;
  --dur-slow: 700ms;
}

/* ------------------------------- Reset --------------------------------- */
*, *::before, *::after{ box-sizing: border-box; }
html{
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
}
body{
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--step-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg, video{ max-width: 100%; display: block; }
img{ height: auto; }
a{ color: inherit; }
ul, ol{ margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p, figure, blockquote{ margin: 0; }
button{ font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, textarea, select{ font: inherit; color: inherit; }
[hidden]{ display: none !important; }

h1, h2, h3, h4{
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--ink);
}

/* Visible keyboard focus everywhere */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible{
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
  border-radius: 2px;
}

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

.skip-link{
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 1000;
  background: var(--ink);
  color: var(--bg);
  padding: 0.75em 1.25em;
  border-radius: 0 0 var(--radius) var(--radius);
  font-weight: 600;
  transition: top var(--dur-fast) var(--ease);
}
.skip-link:focus{ top: 0; }

/* ------------------------------ Layout ---------------------------------- */
.container{
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.25rem;
}
.container--narrow{ max-width: var(--container-narrow); }

.section{ padding-block: clamp(3.5rem, 4vw + 1rem, 6.5rem); }
.section--alt{ background: var(--bg-alt); }
.section--ink{ background: var(--ink); color: var(--bg); }
.section--ink h2, .section--ink h3{ color: var(--bg); }

.section-head{
  max-width: 42rem;
  margin-bottom: clamp(2rem, 3vw, 3rem);
}
.eyebrow{
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-body);
  font-size: var(--step-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--wine);
  margin-bottom: 0.9em;
}
.eyebrow::before{
  content: "";
  width: 1.6em;
  height: 2px;
  background: var(--brass);
  display: inline-block;
}
.section--ink .eyebrow{ color: var(--brass-tint); }
.section--ink .eyebrow::before{ background: var(--brass-tint); }
.section--ink p{ color: rgba(247,243,236,0.78); }
.section--ink .card{
  background: rgba(247,243,236,0.06);
  border-color: rgba(247,243,236,0.18);
}
.section--ink .card:hover{
  border-color: rgba(247,243,236,0.36);
  box-shadow: none;
}
.section--ink .card__link{ color: var(--brass-tint); }

h1{ font-size: var(--step-2xl); }
.section-head h2{ font-size: var(--step-xl); }
h3{ font-size: var(--step-md); }

.lede{
  font-size: var(--step-md);
  color: var(--ink-soft);
  max-width: 46ch;
}
.section--ink .lede{ color: rgba(247,243,236,0.78); }

.grid{ display: grid; gap: clamp(1.25rem, 2vw, 2rem); }
.grid-2{ grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3{ grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid-4{ grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

/* ------------------------------- Header --------------------------------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247,243,236,0.92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}
.site-header__bar{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1rem;
}
.brand{
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  text-decoration: none;
  white-space: nowrap;
}
.brand__mark{ color: var(--wine); }
.brand__role{
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--step-sm);
  color: var(--ink-faint);
  display: none;
}
@media (min-width: 560px){ .brand__role{ display: inline; } }

.nav-toggle{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
}
.nav-toggle svg{ width: 20px; height: 20px; }
.nav-toggle .icon-close{ display: none; }
.nav-toggle[aria-expanded="true"] .icon-open{ display: none; }
.nav-toggle[aria-expanded="true"] .icon-close{ display: block; }

.site-nav{
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2vw, 2rem);
}
.site-nav__links{
  display: flex;
  align-items: center;
  gap: clamp(0.9rem, 1.6vw, 1.6rem);
  font-weight: 500;
  font-size: var(--step-sm);
}
.site-nav__links a{
  position: relative;
  text-decoration: none;
  padding-block: 0.35em;
  transition: color var(--dur-fast) var(--ease);
}
.site-nav__links a::after{
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--wine);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-med) var(--ease);
}
.site-nav__links a:hover,
.site-nav__links a[aria-current="page"]{
  color: var(--wine);
}
.site-nav__links a:hover::after,
.site-nav__links a[aria-current="page"]::after{
  transform: scaleX(1);
}
.site-nav__links a[aria-current="page"]:hover::after{
  background: var(--brass);
}

.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.85em 1.5em;
  font-weight: 600;
  font-size: var(--step-sm);
  text-decoration: none;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: transform var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
  will-change: transform;
}
.btn:active{ transform: translateY(1px); }
.btn--primary{
  background: var(--wine);
  color: #fff8f2;
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover{ background: var(--wine-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--ghost{
  border-color: var(--border-strong);
  color: var(--ink);
}
.btn--ghost:hover{ border-color: var(--wine); color: var(--wine); transform: translateY(-2px); }
.btn--on-dark{ border-color: rgba(247,243,236,0.4); color: var(--bg); }
.btn--on-dark:hover{ border-color: var(--brass-tint); color: var(--brass-tint); transform: translateY(-2px); }
.btn--sm{ padding: 0.6em 1.1em; font-size: 0.85rem; }
.btn--block{ width: 100%; }

/* Mobile nav */
@media (max-width: 899px){
  .nav-toggle{ display: inline-flex; }
  .site-nav{
    position: fixed;
    inset: 0 0 0 auto;
    width: min(320px, 84vw);
    height: 100vh;
    background: var(--surface);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: 5.5rem 1.75rem 2rem;
    gap: 2rem;
    transform: translateX(100%);
    transition: transform var(--dur-med) var(--ease);
    box-shadow: var(--shadow-lg);
  }
  .site-nav.is-open{ transform: translateX(0); }
  .site-nav__links{ flex-direction: column; align-items: flex-start; gap: 1.25rem; font-size: 1.1rem; }
  .nav-scrim{
    position: fixed; inset: 0;
    background: rgba(25,20,16,0.35);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur-med) var(--ease);
    z-index: 99;
  }
  .nav-scrim.is-open{ opacity: 1; pointer-events: auto; }
}
@media (min-width: 900px){
  .nav-toggle{ display: none; }
  .nav-scrim{ display: none; }
}

/* -------------------------------- Hero ----------------------------------- */
.hero{
  position: relative;
  padding-block: clamp(3rem, 6vw, 6rem) clamp(3.5rem, 6vw, 6rem);
  overflow: hidden;
}
.hero__grid{
  display: grid;
  gap: clamp(2rem, 4vw, 3rem);
  align-items: center;
}
@media (min-width: 960px){
  .hero__grid{ grid-template-columns: 1.1fr 0.9fr; }
}
.hero h1{ margin-bottom: 0.5em; }
.hero .lede{ max-width: 52ch; margin-bottom: 1.75em; }
.hero__ctas{ display: flex; flex-wrap: wrap; gap: 0.9rem; margin-bottom: 2.25rem; }
.hero__proof{
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  padding-top: 1.75rem;
  border-top: 1px solid var(--border);
}
.proof-stat{ min-width: 8rem; }
.proof-stat__num{
  display: block;
  font-family: var(--font-display);
  font-size: var(--step-lg);
  font-weight: 700;
  color: var(--wine);
  line-height: 1;
  margin-bottom: 0.25em;
}
.proof-stat__label{ font-size: var(--step-sm); color: var(--ink-faint); }

.hero__art{
  position: relative;
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero__art svg{
  width: 100%;
  height: 100%;
}
.hero__art .parallax-layer{
  transition: transform 0.2s linear;
  will-change: transform;
}
@media (prefers-reduced-motion: reduce){
  .hero__art .parallax-layer{ transition: none !important; transform: none !important; }
}

/* --------------------------- Reveal animation ---------------------------- */
.reveal{
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease);
  will-change: transform, opacity;
}
.reveal.is-visible{ opacity: 1; transform: translateY(0); }
.reveal-group > *{ transition-delay: calc(var(--i, 0) * 90ms); }

@media (prefers-reduced-motion: reduce){
  .reveal{ opacity: 1; transform: none; transition: none; }
  .reveal-group > *{ transition-delay: 0ms; }
}

/* IMPORTANT: the hero H1 / hero copy must NOT use .reveal — it must be visible
   on first paint since it is the LCP element. Only secondary hero elements
   (art, proof strip) use scroll/entry reveal treatment via .reveal-soft. */
.reveal-soft{
  opacity: 0;
  animation: soft-in var(--dur-slow) var(--ease) forwards;
}
@keyframes soft-in{
  from{ opacity: 0; transform: translateY(10px); }
  to{ opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce){
  .reveal-soft{ animation: none; opacity: 1; }
}

/* -------------------------------- Cards ---------------------------------- */
.card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 2.5vw, 2.25rem);
  transition: transform var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease), border-color var(--dur-med) var(--ease);
}
.card:hover{ transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--border-strong); }
.card__icon{
  width: 2.75rem; height: 2.75rem;
  display: grid; place-items: center;
  border-radius: var(--radius);
  background: var(--wine-tint);
  color: var(--wine);
  margin-bottom: 1.25rem;
}
.card h3{ margin-bottom: 0.5em; font-size: 1.2rem; }
.card p{ color: var(--ink-soft); }
.card__link{
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  margin-top: 1.1em;
  font-weight: 600;
  font-size: var(--step-sm);
  color: var(--wine);
  text-decoration: none;
}
.card__link svg{ width: 1em; height: 1em; transition: transform var(--dur-fast) var(--ease); }
.card__link:hover svg{ transform: translateX(3px); }

.case-card{
  display: grid;
  gap: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  transition: transform var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease);
}
@media (min-width: 760px){ .case-card{ grid-template-columns: 1fr 1fr; align-items: center; } }
.case-card:hover{ transform: translateY(-4px); box-shadow: var(--shadow-md); }
.case-card__tag{
  display: inline-block;
  font-size: var(--step-sm);
  font-weight: 700;
  color: var(--brass-dark);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.75em;
}
.case-card__metric{
  font-family: var(--font-display);
  font-size: var(--step-lg);
  font-weight: 700;
  color: var(--wine);
}

.testimonial{
  background: var(--surface);
  border-left: 4px solid var(--brass);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  padding: clamp(1.5rem, 2.5vw, 2rem);
}
.testimonial blockquote{
  font-family: var(--font-display);
  font-size: var(--step-md);
  line-height: 1.45;
  margin-bottom: 1em;
}
.testimonial figcaption{ font-size: var(--step-sm); color: var(--ink-faint); }
.testimonial figcaption strong{ color: var(--ink); display: block; font-weight: 700; }

/* --------------------------- Media placeholder ---------------------------- */
.media-placeholder{
  position: relative;
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1.5px dashed var(--border-strong);
  background:
    repeating-linear-gradient(135deg, var(--bg-alt) 0 12px, var(--surface) 12px 24px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--ink-faint);
  padding: 1.5rem;
  overflow: hidden;
}
.media-placeholder__label{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.5em 1.1em;
  font-size: var(--step-sm);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}
.media-placeholder--portrait{ aspect-ratio: 4 / 5; max-width: 380px; }
.media-placeholder--wide{ aspect-ratio: 16 / 9; }
.media-placeholder--screenshot{ aspect-ratio: 16 / 10; }
.media-placeholder--square{ aspect-ratio: 1 / 1; }

/* --------------------------------- FAQ ------------------------------------ */
.faq-item{
  border-bottom: 1px solid var(--border);
  padding-block: 1.1rem;
}
.faq-item summary{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  cursor: pointer;
  list-style: none;
}
.faq-item summary::-webkit-details-marker{ display: none; }
.faq-item summary::after{
  content: "+";
  font-size: 1.4rem;
  color: var(--wine);
  flex-shrink: 0;
  transition: transform var(--dur-fast) var(--ease);
}
.faq-item[open] summary::after{ transform: rotate(45deg); }
.faq-item p{
  color: var(--ink-soft);
  margin-top: 0.9rem;
  max-width: 62ch;
}

/* ------------------------------ Breadcrumbs -------------------------------- */
.breadcrumbs{
  padding-block: 1rem;
  font-size: var(--step-sm);
  color: var(--ink-faint);
  border-bottom: 1px solid var(--border);
}
.breadcrumbs ol{ display: flex; flex-wrap: wrap; gap: 0.4em; align-items: center; }
.breadcrumbs a{ text-decoration: none; color: var(--ink-faint); }
.breadcrumbs a:hover{ color: var(--wine); }
.breadcrumbs li:not(:last-child)::after{ content: "/"; margin-left: 0.4em; color: var(--border-strong); }
.breadcrumbs [aria-current="page"]{ color: var(--ink); font-weight: 600; }

/* -------------------------------- Tables ----------------------------------- */
.data-table{ width: 100%; border-collapse: collapse; font-size: var(--step-sm); }
.data-table caption{ text-align: left; font-weight: 700; margin-bottom: 0.75rem; }
.data-table th, .data-table td{ text-align: left; padding: 0.75em 1em; border-bottom: 1px solid var(--border); }
.data-table th{ font-weight: 700; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.04em; font-size: 0.78rem; }
.table-wrap{ overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* -------------------------------- Prose ------------------------------------ */
.prose{ max-width: 68ch; }
.prose h2{ font-size: var(--step-lg); margin-top: 2.2em; margin-bottom: 0.6em; }
.prose h3{ font-size: 1.2rem; margin-top: 1.8em; margin-bottom: 0.5em; }
.prose p{ color: var(--ink-soft); margin-bottom: 1.2em; }
.prose ul, .prose ol{ margin-bottom: 1.2em; padding-left: 1.4em; color: var(--ink-soft); }
.prose ul{ list-style: disc; }
.prose ol{ list-style: decimal; }
.prose li{ margin-bottom: 0.5em; }
.prose blockquote{
  border-left: 3px solid var(--brass);
  padding-left: 1.2em;
  font-style: italic;
  color: var(--ink-soft);
  margin: 1.5em 0;
}
.prose strong{ color: var(--ink); }
.prose a{ color: var(--wine); text-decoration-thickness: 1.5px; text-underline-offset: 3px; }
.article-meta{ display: flex; flex-wrap: wrap; gap: 0.5em 1.2em; color: var(--ink-faint); font-size: var(--step-sm); margin-bottom: 2rem; }

/* -------------------------------- Forms ------------------------------------ */
.form-field{ margin-bottom: 1.4rem; }
.form-field label{ display: block; font-weight: 600; margin-bottom: 0.5em; font-size: var(--step-sm); }
.form-field .hint{ display: block; color: var(--ink-faint); font-size: 0.8rem; margin-top: 0.35em; }
.form-field input,
.form-field textarea,
.form-field select{
  width: 100%;
  padding: 0.85em 1em;
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus{
  border-color: var(--wine);
  box-shadow: 0 0 0 3px var(--wine-tint);
  outline: none;
}
.form-field textarea{ resize: vertical; min-height: 9rem; }
.form-honeypot{ position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status{ margin-top: 1rem; font-weight: 600; }
.form-status[data-state="success"]{ color: #226b3a; }
.form-status[data-state="error"]{ color: var(--wine); }

/* -------------------------------- Footer ------------------------------------ */
.site-footer{
  background: var(--ink);
  color: rgba(247,243,236,0.82);
  padding-block: clamp(3rem, 5vw, 4.5rem) 2rem;
}
.site-footer a{ color: rgba(247,243,236,0.82); text-decoration: none; }
.site-footer a:hover{ color: var(--brass-tint); }
.footer-grid{
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(247,243,236,0.14);
}
@media (max-width: 760px){ .footer-grid{ grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px){ .footer-grid{ grid-template-columns: 1fr; } }
.footer-brand{ font-family: var(--font-display); font-size: 1.3rem; font-weight: 700; color: #fff; }
.footer-tag{ margin-top: 0.75em; color: rgba(247,243,236,0.6); max-width: 32ch; font-size: var(--step-sm); }
.footer-col h4{
  color: rgba(247,243,236,0.55);
  font-family: var(--font-body);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}
.footer-col li{ margin-bottom: 0.7em; font-size: var(--step-sm); }
.footer-bottom{
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  padding-top: 1.75rem;
  font-size: 0.82rem;
  color: rgba(247,243,236,0.5);
}
.footer-social{ display: flex; gap: 1rem; }

/* -------------------------------- Utilities ---------------------------------- */
.center-text{ text-align: center; margin-inline: auto; }
.mt-0{ margin-top: 0 !important; }
.flow-tight > * + *{ margin-top: 0.75rem; }
.tag-list{ display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag{
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.4em 0.8em;
  border-radius: 999px;
  background: var(--brass-tint);
  color: var(--brass-dark);
}
.cta-banner{
  background: var(--wine);
  color: #fff8f2;
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 4vw, 3.5rem);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.cta-banner h2{ color: #fff8f2; font-size: var(--step-lg); }
.cta-banner p{ color: rgba(255,248,242,0.85); margin-top: 0.5em; max-width: 42ch; }

/* Obstacle/fix callout used in case studies */
.callout{
  border: 1px solid var(--border);
  border-left: 4px solid var(--wine);
  background: var(--wine-tint);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
}
.callout h4{ font-size: 1rem; margin-bottom: 0.4em; color: var(--wine-dark); }
.callout p{ margin: 0; color: var(--ink-soft); }

/* 404 */
.error-page{
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-block: 4rem;
}
.error-page__code{
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 8rem);
  font-weight: 700;
  color: var(--wine);
  line-height: 1;
}

/* Live chat launcher fallback text (Tawk.to overrides once loaded) */
.chat-note{ font-size: var(--step-sm); color: var(--ink-faint); }

/* -------------------------- Scroll progress bar ------------------------------ */
.scroll-progress{
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--wine), var(--brass));
  transform: scaleX(0);
  transform-origin: left;
  z-index: 200;
  will-change: transform;
}
@media (prefers-reduced-motion: reduce){
  .scroll-progress{ display: none; }
}

/* ------------------------------- Data charts ---------------------------------- */
/* Simple, honest charts built only from real, disclosed figures — see case studies. */
.chart-card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 2.5vw, 2rem);
  width: 100%;
}
.chart-card--compact{ padding: 1.25rem; }
.chart-card__title{
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.78rem;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1rem;
}
.chart-card svg{ width: 100%; height: auto; overflow: visible; display: block; }
.chart-card__note{
  margin-top: 1rem;
  font-size: var(--step-sm);
  color: var(--ink-soft);
}
.chart-bar{
  transform: scaleY(0);
  transform-origin: bottom;
  transform-box: fill-box;
  transition: transform 900ms var(--ease);
}
.chart-card.is-visible .chart-bar{ transform: scaleY(1); }
.chart-card .chart-bar:nth-of-type(2){ transition-delay: 160ms; }
.chart-value{
  font-family: var(--font-display);
  fill: var(--ink);
  opacity: 0;
  transition: opacity 500ms var(--ease) 650ms;
}
.chart-card.is-visible .chart-value{ opacity: 1; }
.chart-label{
  font-family: var(--font-body);
  font-size: 11px;
  fill: var(--ink-faint);
}
.chart-baseline{ stroke: var(--border); stroke-width: 1; }
@media (prefers-reduced-motion: reduce){
  .chart-bar{ transform: scaleY(1); transition: none; }
  .chart-value{ opacity: 1; transition: none; }
}

/* Simple before/after schematic diagram (non-numeric, illustrative) */
.diagram-card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 2.5vw, 2rem);
  width: 100%;
}
.diagram-card svg{ width: 100%; height: auto; display: block; }
.diagram-node{ fill: var(--surface); stroke: var(--border-strong); stroke-width: 1.5; }
.diagram-node--dim{ fill: var(--bg-alt); stroke-dasharray: 3 3; stroke: var(--border-strong); opacity: 0.85; }
.diagram-node--merged{ fill: var(--wine-tint); stroke: var(--wine); }
.diagram-label{ font-family: var(--font-body); font-size: 11px; fill: var(--ink-soft); }
.diagram-heading{ font-family: var(--font-body); font-weight: 700; font-size: 11px; fill: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.05em; }
.diagram-link{ stroke: var(--border-strong); stroke-width: 1.5; fill: none; }
.diagram-link--new{ stroke: var(--brass); }