/* ============================================================
   IMMERSION COOLING AUSTRALIA — Design System
   immersioncooling.com.au
   ============================================================ */

/* --- Custom Properties (Design Tokens) --- */
:root {
  /* Palette */
  --color-navy:       #0a1628;
  --color-navy-light: #132038;
  --color-slate:      #1e3050;
  --color-teal:       #00a896;
  --color-teal-dark:  #008f7f;
  --color-teal-light: #00d4b8;
  --color-cyan:       #56e0e0;
  --color-white:      #ffffff;
  --color-off-white:  #f4f6f9;
  --color-gray-100:   #e8ecf1;
  --color-gray-200:   #d0d7e1;
  --color-gray-400:   #8c99ab;
  --color-gray-600:   #556178;
  --color-gray-800:   #2d3a4e;
  --color-danger:     #e74c3c;
  --color-success:    #27ae60;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;

  /* Sizing */
  --max-width:   1200px;
  --header-h:    72px;
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;

  /* Shadows */
  --shadow-sm:   0 1px 3px rgba(10,22,40,.08);
  --shadow-md:   0 4px 12px rgba(10,22,40,.10);
  --shadow-lg:   0 8px 30px rgba(10,22,40,.14);
  --shadow-xl:   0 16px 50px rgba(10,22,40,.18);

  /* Transitions */
  --ease-out: cubic-bezier(.25,.46,.45,.94);
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-gray-800);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { display: block; max-width: 100%; height: auto; }
a { color: var(--color-teal-dark); text-decoration: none; transition: color .2s var(--ease-out); }
a:hover { color: var(--color-teal); }
ul, ol { list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }

/* --- Utility Classes --- */
.container    { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.sr-only      { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
.text-center  { text-align: center; }
.text-teal    { color: var(--color-teal); }
.text-navy    { color: var(--color-navy); }
.text-gray    { color: var(--color-gray-600); }
.mt-0         { margin-top: 0; }
.mb-0         { margin-bottom: 0; }
.mb-1         { margin-bottom: 8px; }
.mb-2         { margin-bottom: 16px; }
.mb-3         { margin-bottom: 24px; }
.mb-4         { margin-bottom: 32px; }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-navy);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); margin-bottom: 16px; }
h3 { font-size: clamp(1.15rem, 2.5vw, 1.5rem); margin-bottom: 12px; }
h4 { font-size: 1.125rem; margin-bottom: 8px; }
p  { margin-bottom: 16px; }
p:last-child { margin-bottom: 0; }

.section-label {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--color-teal);
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-gray-600);
  max-width: 640px;
  margin: 0 auto 40px;
}

.lead { font-size: 1.125rem; line-height: 1.7; color: var(--color-gray-600); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: .9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all .25s var(--ease-out);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-teal);
  color: var(--color-white);
  border-color: var(--color-teal);
}
.btn-primary:hover {
  background: var(--color-teal-dark);
  border-color: var(--color-teal-dark);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,.35);
}
.btn-outline:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.6);
  color: var(--color-white);
}

.btn-outline-dark {
  background: transparent;
  color: var(--color-navy);
  border-color: var(--color-gray-200);
}
.btn-outline-dark:hover {
  border-color: var(--color-teal);
  color: var(--color-teal);
}

.btn-sm {
  padding: 10px 20px;
  font-size: .875rem;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* --- Header / Navigation --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(10,22,40,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.06);
  transition: background .3s;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-white);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.logo:hover { color: var(--color-white); }

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-teal);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-icon svg { width: 20px; height: 20px; }

.nav-desktop { display: flex; align-items: center; gap: 32px; }
.nav-desktop a {
  font-size: .875rem;
  font-weight: 500;
  color: rgba(255,255,255,.7);
  transition: color .2s;
  text-decoration: none;
}
.nav-desktop a:hover,
.nav-desktop a.active { color: var(--color-white); }

.nav-cta {
  background: var(--color-teal) !important;
  color: var(--color-white) !important;
  padding: 8px 20px;
  border-radius: var(--radius-md);
  font-weight: 600 !important;
}
.nav-cta:hover {
  background: var(--color-teal-dark) !important;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  margin: 5px 0;
  transition: all .3s;
  border-radius: 2px;
}

.nav-mobile {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-navy);
  padding: 32px 24px;
  z-index: 999;
  flex-direction: column;
  gap: 8px;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  display: block;
  font-size: 1.125rem;
  font-weight: 500;
  color: rgba(255,255,255,.8);
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,.06);
  text-decoration: none;
}
.nav-mobile a:hover { color: var(--color-white); }

@media (max-width: 768px) {
  .nav-desktop { display: none; }
  .nav-toggle  { display: block; }
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 60px) 0 80px;
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-slate) 50%, var(--color-navy-light) 100%);
  overflow: hidden;
  color: var(--color-white);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 600px 400px at 80% 30%, rgba(0,168,150,.12) 0%, transparent 70%),
    radial-gradient(ellipse 400px 300px at 20% 70%, rgba(86,224,224,.06) 0%, transparent 70%);
  pointer-events: none;
}

/* Subtle grid pattern */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.hero h1 {
  color: var(--color-white);
  margin-bottom: 20px;
  font-weight: 800;
}

.hero h1 span { color: var(--color-teal-light); }

.hero-sub {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: rgba(255,255,255,.7);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 600px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,.1);
}

.hero-trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .875rem;
  color: rgba(255,255,255,.6);
}

.hero-trust-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--color-teal);
}

/* --- Sections --- */
.section {
  padding: 80px 0;
}
.section-alt {
  background: var(--color-off-white);
}
.section-dark {
  background: var(--color-navy);
  color: var(--color-white);
}
.section-dark h2,
.section-dark h3 { color: var(--color-white); }
.section-dark .section-label { color: var(--color-teal-light); }
.section-dark .section-subtitle { color: rgba(255,255,255,.6); }

@media (min-width: 769px) {
  .section { padding: 100px 0; }
}

/* --- Grid Layouts --- */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}
.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.grid-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* --- Cards --- */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all .3s var(--ease-out);
}
.card:hover {
  border-color: var(--color-gray-200);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.card-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, rgba(0,168,150,.1), rgba(86,224,224,.08));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-teal);
}
.card-icon svg { width: 24px; height: 24px; }

/* Dark card variant */
.card-dark {
  background: var(--color-navy-light);
  border-color: rgba(255,255,255,.06);
}
.card-dark:hover {
  border-color: rgba(0,168,150,.3);
  box-shadow: 0 8px 30px rgba(0,0,0,.3);
}
.card-dark .card-icon {
  background: rgba(0,168,150,.15);
}

/* --- Stats Bar --- */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  padding: 48px 0;
}
@media (min-width: 768px) {
  .stats-bar { grid-template-columns: repeat(4, 1fr); }
}
.stat-item { text-align: center; }
.stat-number {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  color: var(--color-teal);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-label {
  font-size: .875rem;
  color: var(--color-gray-600);
  font-weight: 500;
}
.section-dark .stat-label { color: rgba(255,255,255,.5); }

/* --- Process / Steps --- */
.process-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  counter-reset: step;
}
@media (min-width: 768px) {
  .process-steps { grid-template-columns: repeat(4, 1fr); gap: 24px; }
}
.process-step {
  position: relative;
  counter-increment: step;
  padding: 32px 24px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-100);
  text-align: center;
}
.process-step::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-teal);
  opacity: .25;
  margin-bottom: 12px;
  line-height: 1;
}
.process-step h4 { font-weight: 700; color: var(--color-navy); }
.process-step p { font-size: .9rem; color: var(--color-gray-600); }

/* Connector line on desktop */
@media (min-width: 768px) {
  .process-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -13px;
    width: 24px;
    height: 2px;
    background: var(--color-gray-200);
  }
}

/* --- FAQ Accordion --- */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--color-gray-100);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px 0;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-navy);
  transition: color .2s;
}
.faq-question:hover { color: var(--color-teal); }
.faq-question .faq-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  transition: transform .3s var(--ease-out);
  color: var(--color-gray-400);
}
.faq-item.open .faq-icon { transform: rotate(45deg); color: var(--color-teal); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s var(--ease-out);
}
.faq-answer-inner {
  padding: 0 0 20px;
  color: var(--color-gray-600);
  line-height: 1.7;
}

/* --- Forms --- */
.form-group {
  margin-bottom: 20px;
}
.form-label {
  display: block;
  font-size: .875rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 6px;
}
.form-label .optional {
  font-weight: 400;
  color: var(--color-gray-400);
}
.form-group-checkbox { margin-bottom: 20px; }
.form-label-checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  cursor: pointer;
  margin-bottom: 4px;
}
.form-label-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-teal);
}
.form-hint {
  display: block;
  font-size: .8125rem;
  color: var(--color-gray-400);
  margin-left: 28px;
}
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: .9375rem;
  background: var(--color-white);
  border: 1.5px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  transition: border-color .2s, box-shadow .2s;
  outline: none;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-teal);
  box-shadow: 0 0 0 3px rgba(0,168,150,.1);
}
.form-textarea { min-height: 120px; resize: vertical; }
.form-select { appearance: none; cursor: pointer; }

/* Honeypot */
.ohnohoney { position: absolute; left: -9999px; opacity: 0; }

/* Form messages */
.form-success,
.form-error {
  display: none;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  font-weight: 500;
  margin-top: 16px;
}
.form-success {
  background: rgba(39,174,96,.08);
  color: var(--color-success);
  border: 1px solid rgba(39,174,96,.2);
}
.form-error {
  background: rgba(231,76,60,.08);
  color: var(--color-danger);
  border: 1px solid rgba(231,76,60,.2);
}
.form-success.show,
.form-error.show { display: block; }

/* Inline newsletter form */
.newsletter-inline {
  display: flex;
  gap: 12px;
  max-width: 480px;
}
.newsletter-inline .form-input { flex: 1; }

@media (max-width: 480px) {
  .newsletter-inline {
    flex-direction: column;
  }
}

/* --- Footer --- */
.site-footer {
  background: var(--color-navy);
  color: rgba(255,255,255,.6);
  padding: 64px 0 32px;
  font-size: .875rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
}
.footer-brand p { max-width: 300px; line-height: 1.7; margin-top: 12px; }
.footer-col h4 {
  color: var(--color-white);
  font-size: .8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  color: rgba(255,255,255,.5);
  padding: 4px 0;
  font-size: .875rem;
  transition: color .2s;
}
.footer-col a:hover { color: var(--color-teal-light); }

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,.08);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}
.footer-bottom a { color: rgba(255,255,255,.4); }
.footer-bottom a:hover { color: var(--color-teal-light); }

/* --- Blog Cards --- */
.blog-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all .3s var(--ease-out);
}
.blog-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.blog-card-body { padding: 24px; }
.blog-card-tag {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  color: var(--color-teal);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 8px;
}
.blog-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 8px;
  line-height: 1.35;
}
.blog-card-title a { color: inherit; text-decoration: none; }
.blog-card-title a:hover { color: var(--color-teal); }
.blog-card-excerpt {
  font-size: .9rem;
  color: var(--color-gray-600);
  line-height: 1.6;
  margin-bottom: 12px;
}
.blog-card-meta {
  font-size: .8rem;
  color: var(--color-gray-400);
}

/* Blog article styles */
.article-header {
  padding: calc(var(--header-h) + 60px) 0 40px;
  background: var(--color-off-white);
}
.article-meta {
  font-size: .875rem;
  color: var(--color-gray-400);
  margin-bottom: 12px;
}
.article-content {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}
.article-content h2 { margin-top: 40px; margin-bottom: 16px; }
.article-content h3 { margin-top: 32px; margin-bottom: 12px; }
.article-content p { margin-bottom: 16px; line-height: 1.8; }
.article-content ul,
.article-content ol {
  margin: 16px 0;
  padding-left: 24px;
  list-style: disc;
}
.article-content ol { list-style: decimal; }
.article-content li {
  margin-bottom: 8px;
  line-height: 1.7;
  color: var(--color-gray-800);
}
.article-content blockquote {
  margin: 24px 0;
  padding: 20px 24px;
  background: var(--color-off-white);
  border-left: 4px solid var(--color-teal);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-gray-600);
  font-style: italic;
}

.summary-box {
  background: linear-gradient(135deg, rgba(0,168,150,.06), rgba(86,224,224,.04));
  border: 1px solid rgba(0,168,150,.15);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 32px;
}
.summary-box h3 { color: var(--color-teal-dark); margin-bottom: 8px; font-size: 1rem; }
.summary-box ul { margin: 0; padding-left: 20px; list-style: disc; }
.summary-box li { font-size: .9rem; margin-bottom: 4px; }

/* --- CTA Banner --- */
.cta-banner {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-slate) 100%);
  padding: 80px 0;
  text-align: center;
  color: var(--color-white);
}
.cta-banner h2 { color: var(--color-white); margin-bottom: 16px; }
.cta-banner p { color: rgba(255,255,255,.65); max-width: 560px; margin: 0 auto 32px; font-size: 1.1rem; }

/* --- Page Header (inner pages) --- */
.page-header {
  padding: calc(var(--header-h) + 48px) 0 48px;
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-slate) 100%);
  color: var(--color-white);
}
.page-header h1 { color: var(--color-white); margin-bottom: 12px; }
.page-header p { color: rgba(255,255,255,.65); max-width: 600px; font-size: 1.1rem; }

/* --- Capability / Print Styles --- */
@media print {
  .site-header, .site-footer, .nav-toggle, .nav-mobile,
  .cta-banner, .btn { display: none !important; }
  body { font-size: 11pt; color: #000; }
  .container { max-width: 100%; padding: 0; }
  h1, h2, h3 { color: #000; }
  .section { padding: 24pt 0; }
  .hero { min-height: auto; padding: 36pt 0; background: #fff; color: #000; }
  .hero h1 { color: #000; }
  .hero-sub { color: #333; }
}

/* --- Animations (subtle, respects prefers-reduced-motion) --- */
@media (prefers-reduced-motion: no-preference) {
  .fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity .6s var(--ease-out), transform .6s var(--ease-out);
  }
  .fade-in.visible {
    opacity: 1;
    transform: translateY(0);
  }
}
@media (prefers-reduced-motion: reduce) {
  .fade-in { opacity: 1; transform: none; }
}

/* --- Contact page specific --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}
@media (min-width: 768px) {
  .contact-grid { grid-template-columns: 1fr 1fr; }
}
.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}
.contact-info-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  background: rgba(0,168,150,.08);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-teal);
}
.contact-info-icon svg { width: 20px; height: 20px; }

/* --- Solutions page specifics --- */
.use-case-card {
  display: flex;
  gap: 24px;
  padding: 32px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
  transition: all .3s var(--ease-out);
}
.use-case-card:hover {
  box-shadow: var(--shadow-md);
}
.use-case-icon {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  background: linear-gradient(135deg, rgba(0,168,150,.1), rgba(86,224,224,.08));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-teal);
}
.use-case-icon svg { width: 28px; height: 28px; }

@media (max-width: 640px) {
  .use-case-card { flex-direction: column; }
}

/* Comparison table */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: .9rem;
}
.comparison-table th,
.comparison-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-gray-100);
}
.comparison-table th {
  background: var(--color-off-white);
  font-weight: 700;
  color: var(--color-navy);
  font-size: .8125rem;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.comparison-table tr:hover td { background: rgba(0,168,150,.02); }

/* --- Scroll to top --- */
.scroll-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: var(--color-teal);
  color: var(--color-white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all .3s;
  box-shadow: var(--shadow-md);
  z-index: 900;
}
.scroll-top.visible { opacity: 1; visibility: visible; }
.scroll-top:hover { background: var(--color-teal-dark); transform: translateY(-2px); }
.scroll-top svg { width: 20px; height: 20px; }