:root {
  /* AI Mobile App — slate-charcoal + electric sky blue for "premium mobile + AI" feel */
  --slate:        #334155;
  --slate-dark:   #1E293B;
  --slate-deep:   #0F172A;
  --slate-50:     #F8FAFC;
  --slate-100:    #F1F5F9;
  --slate-200:    #E2E8F0;
  --sky:          #0EA5E9;
  --sky-dark:     #0284C7;
  --sky-light:    #38BDF8;
  --sky-50:       #F0F9FF;
  --sky-100:      #E0F2FE;
  /* Pattern accents for the 3-card deployment comparison */
  --p-ondevice:  #0EA5E9;
  --p-hybrid:    #6366F1;
  --p-cloud:     #7C3AED;
}

.hero h1 .accent { color: var(--sky-light); }
.aeo-label { color: var(--sky-light); background: rgba(163, 230, 53, 0.16); }
.aeo-card .fill { background: linear-gradient(180deg, transparent 60%, rgba(14, 165, 233, 0.40) 60%); color: var(--sky-light); }
.fill  { background: linear-gradient(180deg, transparent 60%, rgba(163, 230, 53, 0.45) 60%); color: var(--sky-light);  }
.section-eyebrow { color: var(--sky-dark); }
.why-icon { background: var(--indigo-50); }
.why-card:hover {transform: translateY(-4px); border-color: var(--sky); }
.comparison thead th.our { background: var(--sky); }
.comparison td.our { background: rgba(8, 145, 178, 0.08); border-left: 3px solid var(--sky); }
.service-card-content::before{ background: var(--slate); transition: width 0.3s, background 0.3s; }
.service-card-content:hover::before {
  width: 60px;
  background: var(--sky);
}
/*.service-card-content::before { background: var(--sky); }*/
.model-card.highlight .model-num { background: var(--sky); }
.model-badge { background: var(--sky); }
.model-card.highlight { background: linear-gradient(160deg, var(--sky-50) 0%, #FFFFFF 100%);
  border-color: var(--sky);  }
.model-card li::before { color: var(--sky); }
.stack-card { background: var(--slate-deep); }
.stack-card h3 { color: var(--sky-light); }
.stack-card::before { background: radial-gradient(circle, rgba(14, 165, 233, 0.32) 0%, rgba(125, 211, 252, 0.18) 50%, transparent 70%); }
.faq-item[open] { border-color: var(--sky); }
.faq-item summary::after { color: var(--sky); }
svg { color: var(--sky-dark); } 
.aeo-label svg { color: inherit; }
.industry-card-content:last-child .industry-icon svg { color: #ffffff; }
.industry-card-content:hover .industry-icon svg { color: #ffffff; }


/* SIGNATURE SECTION 1: NINE MOBILE AI CONCERNS (3x3 grid) */
.concerns-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
  .concern-card {
    background: white;
    border-radius: var(--radius);
    padding: 24px 22px;
    border: 1px solid var(--line);
    position: relative;
    overflow: hidden;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
  }
.concern-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 40px; height: 3px;
  background: var(--slate);
  border-radius: 0 0 3px 0;
  transition: width 0.3s, background 0.3s;
}
.concern-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--sky); }
.concern-card:hover::before { background: var(--sky); width: 60px; }
.concern-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--slate-100) 0%, var(--sky-50) 100%);
  color: var(--slate-dark);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  margin-bottom: 14px;
  border: 1px solid var(--slate-200);
}
.concern-num {
  position: absolute;
  top: 18px; right: 20px;
  
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.05em;
}
.concern-card h3 { font-size: 15.5px; margin-bottom: 8px; line-height: 1.3; padding-right: 30px; }
.concern-card p { font-size: 13.5px; color: var(--slate-base); line-height: 1.55; flex-grow: 1; margin-bottom: 14px; }
.concern-tag {  font-size: 11px; font-weight: 500; color: var(--sky-dark); background: var(--sky-50); border: 1px solid var(--sky-100); padding: 6px 10px; border-radius: 6px; line-height: 1.45; }
@media (max-width: 900px) { .concerns-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .concerns-grid { grid-template-columns: 1fr; } }

/* SIGNATURE SECTION 2: THREE DEPLOYMENT PATTERNS (3-card) */
.patterns-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.pattern-card {
  background: white;
  border-radius: var(--radius);
  padding: 32px 28px;
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}
.pattern-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 5px;
}
.pattern-card.ondevice::before { background: linear-gradient(90deg, var(--p-ondevice) 0%, var(--sky-light) 100%); }
.pattern-card.hybrid::before   { background: linear-gradient(90deg, var(--p-hybrid) 0%, #A5B4FC 100%); }
.pattern-card.cloud::before    { background: linear-gradient(90deg, var(--p-cloud) 0%, #C4B5FD 100%); }
.pattern-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.pattern-card.ondevice:hover { border-color: var(--p-ondevice); }
.pattern-card.hybrid:hover   { border-color: var(--p-hybrid); }
.pattern-card.cloud:hover    { border-color: var(--p-cloud); }
.pattern-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.pattern-label {
  
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 4px;
}
.pattern-card.ondevice .pattern-label { background: var(--sky-50); color: var(--sky-dark); }
.pattern-card.hybrid .pattern-label   { background: #EEF2FF; color: #4338CA; }
.pattern-card.cloud .pattern-label    { background: #F5F3FF; color: #5B21B6; }
.pattern-locality {
  
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.08em;
  font-weight: 600;
}
.pattern-card h3 { font-size: 22px; margin-bottom: 8px; line-height: 1.2; }
.pattern-tools {  font-size: 12px; color: var(--slate-base); margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px dashed var(--line); line-height: 1.5; }
.pattern-card p { font-size: 14px; color: var(--slate-base); line-height: 1.6; flex-grow: 1; margin-bottom: 16px; }
.pattern-box { background: var(--bg); border-radius: 8px; padding: 14px 16px; margin-bottom: 10px; border-left: 3px solid; }
.pattern-card.ondevice .pattern-box { border-left-color: var(--p-ondevice); }
.pattern-card.hybrid .pattern-box   { border-left-color: var(--p-hybrid); }
.pattern-card.cloud .pattern-box    { border-left-color: var(--p-cloud); }
.pattern-box strong { display: block;  font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin-bottom: 5px; font-weight: 700; }
.pattern-box span { font-size: 13px; color: var(--ink); line-height: 1.5; }
@media (max-width: 900px) { .patterns-grid { grid-template-columns: 1fr; } }

.patterns-help {
  background: var(--sky-50);
  border-left: 4px solid var(--sky);
  border-radius: 8px;
  padding: 22px;
  margin-top: 32px;
  font-size: 15px;
  color: var(--slate-base);
  line-height: 1.65;
}
.patterns-help strong { color: var(--ink); }
.patterns-help a { color: var(--sky-dark); font-weight: 600; text-decoration: underline; }